INTELLIGENT AUTOMATIC MULTI-COMBINATION COLD EXTRUSION DEVICE FOR STEEL PIPE

Abstract

 The invention discloses an intelligent automatic multi-combination cold extrusion device for a steel pipe. The device comprises a steel pipe feeding mechanism (10), a host automatic grabbing mechanism (20), a finished product stacking mechanism (30), a host die setting mechanism (40), a steel pipe joint placing mechanism (50), a device rack (60) and a control system (70), wherein the steel pipe feeding mechanism (10) is provided on one side of the device rack (60), the steel pipe joint placing mechanism (50) is provided on the device rack (60), the host die setting mechanism (40) is provided on the other side of the steel pipe joint placing mechanism (50), and the finished product stacking mechanism (30) is provided on the other side of the device rack (60). When the device of the present invention is used, a steel pipe is conveyed through the steel pipe feeding mechanism (10) to the steel pipe joint placing mechanism (50), and manual or automatic loading, namely a loading of a connecting apparatus, is carried out in the steel pipe joint placing mechanism (50), and then the host automatic grabbing mechanism (20) conveys the steel pipe loaded with the connecting apparatus to the host die setting mechanism (40) for cold extrusion machining, and after the machining is completed, the steel pipe is discharged through the finished product stacking mechanism (30). According to the present invention, cold extrusion treatment of the steel pipe and the connecting apparatus can be automatically achieved.

Description

Field of the Invention

[0001] The invention relates to a technical field of a manufacturing device of a steel pipe support rod piece, more specifically, in particular to an intelligent automatic multi-combination cold extrusion device for a steel pipe.

Background of the Invention

[0002] The steel pipe supporter in the building field has a variety of types and gradually moves to a regional and industrial standardization. The main components thereof are a rod piece, a cross rod, an inclined strut and a connecting apparatus. The manufacturing process for the rod piece mainly comprises blanking a rod piece pipe, manufacturing a connecting apparatus and connecting the rod piece pipe and the connecting apparatus. At present, the connection of the rod piece pipe and the connecting apparatus mainly adopts common manual welding and automatic welding. The invention patent No. 201710050319.9 previously filed by the applicant discloses a multi-unit combined cold extruding machine, which provides a brand-new crimping mode, has a good connection performance and high reliability, but has a low degree of automation and cannot realize the operations of automatically feeding, crimping, blanking and the like of steel pipes. For this reason, there is a need for improvements in the prior art.

Summary of the Invention

[0003] The invention aims to provide an intelligent automatic multi-combination cold extrusion device for a steel pipe to overcome the defects in the prior art.

[0004] In order to achieve the purpose, the technical solution adopted by the invention is as follows. An intelligent automatic multi-combination cold extrusion device for a steel pipe comprises a steel pipe feeding mechanism, a host automatic grabbing mechanism, a finished product stacking mechanism, a host die setting mechanism, a steel pipe joint placing mechanism, a device rack and a control system, wherein the steel pipe feeding mechanism is provided on one side of the device rack, the steel pipe joint placing mechanism is provided on the device rack, the host die setting mechanism is provided on the other side of the steel pipe joint placing mechanism, and the finished product stacking mechanism is provided on the other side of the device rack; the control system controls the steel pipe feeding mechanism to convey the steel pipe to the steel pipe joint placing mechanism for automatic or manual loading; after the loading is completed, the control system controls the host automatic grabbing mechanism to convey the steel pipe to the host die setting mechanism for cold extrusion of the steel pipe by the host die setting mechanism; and after the cold extrusion is completed, the control system controls the finished product stacking mechanism to perform blanking and stacking on the steel pipe.

[0005] Further, the steel pipe feeding mechanism comprises a feeding rack, a feeding unit and a driving motor, wherein a plurality of feeding units are provided on the feeding rack, and each feeding unit comprises an L-shaped frame, a driving sprocket, a driven sprocket, a pen-shaped cylinder, a cross rod, a rotary block, a chain and a catch jaw; the L-shaped frame is mounted on the feeding rack, and the upper surface of the bottom edge of the L-shaped frame is of a structure inclining towards the inner side; the driving sprocket and the driven sprocket are respectively mounted at the lower end and the upper end of the side edge of the L-shaped frame; the chain is connected between the driving sprocket and the driven sprocket; at least two pairs of catch jaws are provided on the chain; the cross rod is mounted at the upper end of the side edge of the L-shaped frame through the rotary block; the pen-shaped cylinder is mounted at the lower end of the side edge of the L-shaped frame; the middle of the cross rod is movably connected with the output end of the pen-shaped cylinder; the output shaft of the driving motor is connected with the driving sprocket; and the inner side of the side edge of each L-shaped frame is provided with a limiting rod.

[0006] Further, the host automatic grabbing mechanism comprises a grabbing mechanism frame, a transverse guide rail assembly, a transverse movement assembly, an up-down movement assembly, a support rod, a pipe grabbing pneumatic assembly and a transverse movement rod, wherein the grabbing mechanism frame is provided on the device rack; the transverse guide rail assembly is mounted on the grabbing mechanism frame; the transverse movement assembly is mounted on the transverse guide rail assembly through a rodless cylinder; the up-down movement assembly is mounted on the transverse movement assembly through a first cylinder; the support rod is mounted at the lower end of the up-down movement assembly; and at least two pipe grabbing pneumatic assemblies are mounted on the support rod.

[0007] Further, the pipe grabbing pneumatic assembly comprises a linear shaft, a cylinder fixing block, a second cylinder, a first connecting block, a cylinder shaft, a press jaw, a second connecting block and a speed adjusting joint, wherein the upper ends of the two press jaws are respectively movably connected with the lower ends of the two second connecting blocks; the middles of the two press jaws are respectively movably connected with the two ends of the cylinder fixing block; the upper ends of the two second connecting blocks are respectively movably connected with the two ends of the first connecting block; the second cylinder is mounted on the cylinder fixing block; the speed adjusting joint is provided on the second cylinder; the cylinder shaft of the second cylinder is connected with the middle of the first connecting block; and the linear shaft is mounted at the lower end of the cylinder fixing block.

[0008] Furthermore, the steel pipe joint placing mechanism is a steel pipe positioning mechanism that comprises a first base support, a transverse positioning apparatus provided on the first base support, and an axial positioning apparatus provided on the device rack and located at two ends of the first base support; the transverse positioning apparatus comprises a plurality of positioning units, each positioning unit comprising a U-shaped bottom plate, a rotary disc, a positioning block, a connecting block, a stationary round block and a movable shaft; the movable shafts are mounted on the inner sides of two side plates of the U-shaped bottom plate; the positioning block is mounted on the movable shaft; the lower end of each of the positioning blocks is mounted with a connecting post; an elongated slot is provided on the bottom plate of the U-shaped bottom plate; the lower end of each connecting post is movably connected with one end of one connecting block, the bottom of the connecting post cooperates with the elongated slot, and the other end of the connecting block is movably connected with one end of the stationary round block; and the rotary disc is mounted at the upper end of the stationary round block.

[0009] The steel pipe joint placing mechanism is an automatic loading mechanism that comprises a steel pipe swing mechanism, an accessory conveying mechanism and an accessory mounting push rod mechanism; a steel pipe fixed position is provided on the device rack, the steel pipe swing mechanism is mounted at one end of the steel pipe fixed position, the accessory conveying mechanism is provided on the device rack on one side of the steel pipe fixed position, and the accessory mounting push rod mechanism is provided at the other end of the steel pipe fixed position; the steel pipe swing mechanism is used for fixing the steel pipe at the steel pipe fixed position, and the accessory mounting push rod mechanism is used for automatically mounting an accessory conveyed from the accessory conveying mechanism on the steel pipe;
the steel pipe swing mechanism comprises a mechanism mounting plate, a steel pipe clamping mechanism and a swing mechanism; a notch is provided on the device rack; the mechanism mounting plate is mounted on the device rack at the lower end of the notch; the steel pipe clamping mechanism is provided on the mechanism mounting plate and extends out through the notch; the swing mechanism is mounted on the mechanism mounting plate for driving the steel pipe clamping mechanism to swing; the steel pipe clamping mechanism comprises a steel pipe placing plate, clamping plates, a first link and a clamping cylinder; the swing mechanism comprises a swing motor, a speed reducer, a swinging plate, swinging rods, a second link, a third second link and a fourth second link; the front side and the back side of the mechanism mounting plate are provided with the swinging plate respectively; an arc swinging groove is provided on swinging plate; the lower end of the steel pipe placing plate is provided in the arc swinging groove through the two swinging rods, and the upper end of the steel pipe placing plate is provided with a steel pipe recess matched with the steel pipe; the clamping plates are movably mounted on the two sides of the upper end of the steel pipe placing plate respectively; an accommodating recess for accommodating the steel pipe is provided on the opposite inner sides of the two clamping plates; the lower end of one of the clamping plates is connected with the clamping cylinder through the first link; the clamping cylinder is mounted at the lower end of the swinging plate; the output end of the swing motor is connected with one end of the second link through the speed reducer, the other end of the second link is connected with the middle of the fourth second link through the third second link, the lower end of the fourth second link is movably connected to the mechanism mounting plate, and the other end of the fourth second link is movably connected with one of the swinging rods;
the accessory conveying mechanism is a chain conveying mechanism mounted on one side of the device rack;
the accessory mounting push rod mechanism comprises an accessory mounting cylinder, a stationary plate, a push rod and a link telescopic mechanism, wherein the accessory mounting cylinder is mounted on the device rack through the stationary plate, the push rod is connected with the power end of the accessory mounting cylinder, one end of the link telescopic mechanism is movably connected to the stationary plate, and the other end of the link telescopic mechanism is movably connected to the lower side of one end of the steel pipe fixed position.

[0010] Further, the finished product stacking mechanism comprises a stacking mechanism rack assembly, a steel pipe lifting mechanism and a steel pipe dropping mechanism; both the front and rear sides of the stacking mechanism rack assembly are provided with a linear rail; the steel pipe lifting mechanism is provided at the rear side of the stacking mechanism rack assembly and cooperates with the linear rail at the rear side of the stacking mechanism rack assembly; and the steel pipe dropping mechanism is provided at the front side of the stacking mechanism rack assembly and cooperates with the linear rail at the front side of the stacking mechanism rack assembly.

[0011] The steel pipe lifting mechanism comprises a first standard cylinder, a rear support plate, side support plates, a positioning rod, steel pipe brackets, rotary rods and a turnover mechanism, wherein the first standard cylinder is mounted on the stacking mechanism rack assembly, the power end of the first standard cylinder is connected with the rear support plate; the side support plates are provided on two sides of the rear support plate respectively; the positioning rod is provided between the two side support plates; the rotary rod is provided between the ends of the two side support plates; the steel pipe bracket is provided on each rotary rod; a first stop block is provided at the outer side end of each steel pipe bracket; a first steel pipe groove is provided on each steel pipe bracket; the turnover mechanism is provided on the rotary rod; the turnover mechanism comprises a pressure spring, a screw, a U-shaped positioning angle plate, a turnover collision rod, a stationary side plate and a stationary stop post, wherein the turnover collision rod is mounted on the rotary rod, the bottom plate of the U-shaped positioning angle plate is mounted on the side support plate; the screw is provided on the side plate at the lower end of the U-shaped positioning angle plate, and the pressure spring is located on the screw; the upper end of the pressure spring is connected with the turnover collision rod, the stationary side plate is provided at the upper end of the stacking mechanism rack assembly, and the stationary stop post is provided on the inner side of the stationary side plate and corresponds with the end of the turnover collision rod.

[0012] Furthermore, the steel pipe dropping mechanism comprises a first short connecting rod, a first long connecting rod, a second long connecting rod, a second short connecting rod, a top plate, an upper bracket, a second slide rail and a second standard cylinder, wherein the upper bracket is provided at two ends of the top plate respectively, a second stop block is provided at the outer side end of each upper bracket, a second steel pipe groove is provided on each upper bracket, the second slide rail corresponding to the front side linear rail of the stacking mechanism rack assembly is provided at the inner side of the top plate, the middle of the top plate is movably connected with the two second short connecting rods, the lower end of each second short connecting rod is movably connected with the second long connecting rod, the middles of the two second long connecting rods are movably connected, the lower end of each second long connecting rod is movably connected with the first long connecting rod, the middles of the two first long connecting rods are movably connected, the lower end of each first long connecting rod is movably connected with the first short connecting rod, and the lower ends of the two first short connecting rods are movably connected, the lower end of the second standard cylinder is mounted at the joint of the first short connecting rod and the first long connecting rod, and the power end of the second standard cylinder is movably mounted at the middle and lower part of one of the second long connecting rods.

[0013] Furthermore, the host die setting mechanism comprises a host frame assembly and a plurality of host die setting units provided on the host frame assembly; a host sleeve mechanism is further provided on the outer side of the first host die setting unit; a distance measuring displacement sensor is correspondingly mounted on the host frame assembly at the lower end of each host die setting unit; a joint positioning mechanism is mounted on each host die setting unit; each host die setting unit comprises a host force arm assembly, a first oil cylinder, a second oil cylinder, a rodless cylinder group and a die setting plate, wherein the host force arm assembly comprises two groups of force arm units, the lower end of the first oil cylinder is movably connected with the lower end of one group of force arm units, the lower end of the second oil cylinder is movably connected with the lower end of the other group of force arm units, the first oil cylinder and the second oil cylinder are both mounted at the power end of the rodless cylinder group, the rodless cylinder group is mounted on the host frame assembly, the upper ends of the two groups of force arm units are movably connected through the die setting plate, the die setting plate and the two groups of force arm units form a cavity for accommodating the steel pipe, a cutting die is provided at the upper end of the die setting plate; and boss dovetail dies are uniformly provided on the inner side at the upper end of the die setting plate and the upper ends of the two force arm units;
each group of force arm units consists of two force arms, the joint positioning mechanism comprises two groups of positioning units mounted between the two force arms, each group of positioning units comprises a positioning cylinder and a positioning plate provided at the end of the positioning cylinder, the positioning cylinder is fixedly mounted between the two force arms, and the positioning plate is mounted at the power end of the positioning cylinder;
the host sleeve mechanism comprises two sleeve force arms and two sleeve cylinders, and lower ends of the two sleeve force arms are movably mounted on the host frame assembly, and the upper end of each sleeve force arm is connected with the power end of one sleeve cylinder; the sleeve cylinders are fixedly mounted on a workbench that is located at the upper end of the host frame assembly and corresponds to the plurality of host die setting units.

[0014] Compared with the prior art, the invention has the following advantages. When the device of the present invention is used, a steel pipe is conveyed through the steel pipe feeding mechanism to the steel pipe joint placing mechanism, and manual or automatic loading (namely a loading of a connecting apparatus) is carried out in the steel pipe joint placing mechanism, and then the host automatic grabbing mechanism conveys the steel pipe loaded with the connecting apparatus to the host die setting mechanism for cold extrusion machining, and after the machining is completed, the steel pipe is discharged through the finished product stacking mechanism. According to the present invention, cold extrusion treatment of the steel pipe and the connecting apparatus can be automatically achieved.

Brief Description of the Drawings

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a side perspective view of an intelligent automatic multi-combination cold extrusion device for a steel pipe of the present invention.

Fig. 2 is another side perspective view of the intelligent automatic steel pipe multi-combination cold extruding apparatus of the present invention.

Fig. 3 is a schematic structural view of a steel pipe feeding mechanism according to the present invention.

Fig. 4 is a schematic structural view of a feeding unit of the steel pipe feeding mechanism according to the present invention.

Fig. 5 is a schematic structural view of a feeding unit and a limiting mechanism of the steel pipe feeding mechanism according to the present invention.

Fig. 6 is a schematic structural view of a host automatic grabbing mechanism according to the present invention.

Fig. 7 is a schematic structural view of a transverse movement assembly and an up-down movement assembly of the host automatic grabbing mechanism according to the present invention.

Fig. 8 is a schematic structural view of a pipe grabbing pneumatic assembly of the host automatic grabbing mechanism according to the present invention.

Fig. 9 is a schematic structural view of a steel pipe joint placing mechanism according to the present invention.

Fig. 10 is a schematic structural view of a positioning apparatus of the steel pipe joint placing mechanism according to the present invention.

Fig. 11 is a structural view of a finished product stacking mechanism according to the present invention.

Fig. 12 is a schematic structural view of a steel pipe lifting mechanism of the finished product stacking mechanism according to the present invention.

Fig. 13 is a schematic structural view of a steel pipe dropping mechanism of the finished product stacking mechanism according to the present invention.

Fig. 14 is a schematic structural view of a host die setting mechanism of the present invention.

Fig. 15 is a schematic structural view of a die setting module of the host die setting mechanism of the invention.

Fig. 16 is a schematic structural view of one side of another alternative steel pipe joint placing mechanism according to the present invention.

Fig. 17 is a schematic structural view of another side of another alternative steel pipe joint placing mechanism according to the present invention.

Fig. 18 is a schematic structural view of an accessory mounting push rod mechanism in Fig. 16 according to the present invention.

Fig. 19 is a schematic structural view of one side of a steel pipe swing mechanism for in Fig. 16 according to the present invention.

Fig. 20 is a schematic structural view of another side of the steel pipe swing mechanism for in Fig. 16 according to the present invention.

Fig. 21 is a principle diagram of a control system according to the present invention.

Description of reference signs:

[0016] 10-steel pipe feeding mechanism, 20-host automatic grabbing mechanism, 30-finished product stacking mechanism 30, 40-host die setting mechanism, 50- steel pipe joint placing mechanism, 60-device rack; 110-feeding rack, 111-L-shaped frame, 112-driving motor, 113-driving sprocket, 114-driven sprocket, 115-pen-shaped cylinder, 116-cross rod, 117-rotary block, 118-chain, 119-catch jaw,20-limiting rod; 200-grabbing mechanism frame, 201-transverse guide rail assembly, 202-ransverse movement assembly, 203-up-down movement assembly, 204-buffer, 205-support rod, 206-pipe grabbing pneumatic assembly, 207-stationary catch block, 208-transverse movement rod, 209-cylinder support leg, 210-cylinder connecting plate, 211-first cylinder, 212-rodless cylinder, 213-linear bearing, 214-linear shaft, 215-cylinder fixing block, 216-second cylinder, 217-first connecting block, 218-cylinder shaft, 219-press jaw, 220-second connecting block, 221-speed adjusting joint; 301-stacking mechanism rack assembly, 302-steel pipe dropping mechanism, 303-linear rail, 304-steel pipe lifting mechanism, 305-first standard cylinder, 306-cylinder connecting seat, 307-cylinder connecting plate, 308-first slide rail , 309-rear support plate, 310-steel pipe bracket, 311-pressure spring, 312-screw, 313-U-shaped positioning angle plate, 314-side support plate, 315-positioning rod, 316-connecting angle plate, 317-turnover collision rod, 318-rotary rod, 319-shaft sleeve, 320-first steel pipe groove, 321-stop block; 322-first short connecting rod, 323-first long connecting rod, 324-second long connecting rod, 325-second short connecting rod, 326-top plate, 327-upper bracket, 328-second slide rail, 329-second steel pipe groove, 330-second standard cylinder, 331-stationary side plate, 332- stationary stop post, 333-square frame, 334-front support leg, 335-rear support leg, 336-material placing rod, 337-discharging plate, 338-L-shaped recess; 400-host frame assembly, 401-stance measuring displacement sense, 402-host sleeve mechanism, 403-host force arm assembly, 404-joint positioning mechanism, 405-boss dovetail die, 406-cutting die, 407-first oil cylinder, 408-second oil cylinder, 409-rodless cylinder group, 410-die setting plate, 411-workbench, 4020-sleeve force arm, 4021-sleeve cylinder; 500-first base support, 501-positioning unit, 502-bottom plate, 503-guide sleeve, 504-rotary disc, 505-positioning block, 506-connecting post, 507-connecting block, 508-stationary round block, 509-movable shaft, 510-column, 511-elongated slot, 512-first stationary plate, 513-first positioning cylinder, 514-second stationary plate, 515-second positioning cylinder; 520-steel pipe swing mechanism, 521-accessory conveying mechanism, 522-accessory mounting push rod mechanism, 5220-accessory mounting cylinder, 5221-stationary plate, 5222-push rod, 5223- link telescopic mechanism, 5200-mechanism mounting plate, 5201-notch, 5202-steel pipe placing plate, 5203-clamping plate, 5204-first link, 5205-clamping cylinder, 5206-swing motor, 5207-speed reducer, 5208-swinging plate, 5209-arc swinging groove, 5210-swinging rod, 5211-second link, 5212-third second link, 5213- fourth second link.

Detailed Description on the Embodiments

[0017] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly defined.

The first embodiment

[0018] Referring to Figs. 1-16, the present invention provides an intelligent automatic multi-combination cold extrusion device for a steel pipe that comprises a steel pipe feeding mechanism 10, a host automatic grabbing mechanism 20, a finished product stacking mechanism 30, a host die setting mechanism 40, a steel pipe joint placing mechanism 50, a device rack 60 and a control system 70. The steel pipe feeding mechanism 10 is provided on one side of the device rack 60. The steel pipe joint placing mechanism 50 is provided on the device rack 6. The host die setting mechanism 40 is provided on the other side of the steel pipe joint placing mechanism 50. The finished product stacking mechanism 30 is provided on the other side of the device rack 60. The control system 70 controls the steel pipe feeding mechanism 10 to convey the steel pipe to the steel pipe joint placing mechanism 50 for automatic or manual loading. After the loading is completed, the control system controls the host automatic grabbing mechanism 20 to convey the steel pipe to the host die setting mechanism 40 for cold extrusion of the steel pipe by the host die setting mechanism 40, and after the cold extrusion is completed, the control system controls the finished product stacking mechanism 30 to perform blanking and stacking on the steel pipe.

[0019] The working flow of the intelligent automatic multi-combination cold extrusion device for a steel pipe according to the present invention is as follows. A steel pipe is conveyed through the steel pipe feeding mechanism 10 to the steel pipe joint placing mechanism 50, and manual or automatic loading (namely a loading of a connecting apparatus) is carried out in the steel pipe joint placing mechanism 50. Then the host automatic grabbing mechanism 20 conveys the steel pipe loaded with the connecting apparatus to the host die setting mechanism 40 for cold extrusion machining. After the machining is completed, the finished product stacking mechanism 30 performs blanking and stacking (namely, discharging) on the steel pipe.

[0020] The control system in the present invention may be formed by selecting an existing PLC system, and the corresponding PLC is set according to the working flow of the intelligent automatic multi-combination cold extrusion device for a steel pipe.

[0021] Referring to Figs. 3, 4 and 5, the steel pipe feeding mechanism 10 comprises a feeding rack 110, a feeding unit and a driving motor 112. A plurality of feeding units are provided on the feeding rack 110. Each feeding unit comprises an L-shaped frame 111, a driving sprocket 113, a driven sprocket 114, a pen-shaped cylinder 115, a cross rod 116, a rotary block 117, a chain 118 and a catch jaw 119. The L-shaped frame 111 is mounted on the feeding rack1 10. The upper surface of the bottom edge of the L-shaped frame 111 is of a structure inclining towards the inner side. The driving sprocket 113 and the driven sprocket 114 are respectively mounted at the lower end and the upper end of the side edge of the L-shaped frame 111. The chain 118 is connected between the driving sprocket 113 and the driven sprocket 114. At least two pairs of catch jaws 119 are provided on the chain 118. The cross rod 116 is mounted at the upper end of the side edge of the L-shaped frame 111 through the rotary block 117. The pen-shaped cylinder 115 is mounted at the lower end of the side edge of the L-shaped frame 111. The middle of the cross rod 116 is movably connected with the output end of the pen-shaped cylinder 115. The output shaft of the driving motor 112 is connected with the driving sprocket 113. The inner side of the side edge of each L-shaped frame 111 is provided with a limiting rod 120. The limiting rod 120 is mounted on the feeding rack 110 through a stationary plate. And, the distance between the limiting rod 120 and the side edge of the L-shaped frame 111 can just accommodate one steel pipe, that is, the limiting rod 120 functions to prevent the catch jaws 119 from lifting a plurality of steel pipes at one time; each catch jaw 119 is provided with a groove matched with the steel pipe. During the operation, the steel pipe feeding mechanism 10 places a plurality of steel pipes on the L-shaped frames 111, and because the upper surface of the bottom edge of the L-shaped frame 111 is of a structure inclining towards the inner side, the steel pipes located on the L-shaped frames 111 can stack up towards the inner side automatically. By starting the driving motor 112, the catch jaws 119 on the chain 118 lift the steel pipes to the cross rod 116. As a result of the pen-shaped cylinder 115, the cross rod 116 can be prevented from inclining. and then the steel pipes on the cross rod 116 can automatically fall to the steel pipe joint placing mechanism 50. This steel pipe feeding mechanism 10 can carry out a batch lifting processing to the steel pipes.

[0022] Referring to Figs. 9 and 10, the steel pipe joint placing mechanism 50 is a steel pipe positioning mechanism that comprises a first base support 500, a transverse positioning apparatus provided on the first base support 500, and an axial positioning apparatus provided on the device rack 60 and located at two ends of the first base support 500. The transverse positioning apparatus comprises a plurality of positioning units 501, and each positioning unit comprises a U-shaped bottom plate 502, a rotary disc 504, a positioning block 505, a connecting block 507, a stationary round block 508 and a movable shaft 509. The movable shafts 509 are mounted on the inner sides of two side plates of the U-shaped bottom plate 502. The positioning blocks 505 are mounted on the movable shafts 509. The lower end of each of the positioning blocks 505 is mounted with a connecting post 506. An elongated slot 511 is provided on the bottom plate of the U-shaped bottom plate 502. The lower end of each connecting post 506 is movably connected with an end of the connecting block 507, the bottom of the connecting post 506 cooperates with the elongated slot 511, and the other end of the connecting block 507 is movably connected with one end of the stationary round block 508. The rotary disc 504 is mounted at the upper end of the stationary round block 508. Each movable shaft 509 is provided on the side plate of the U-shaped bottom plate 502 through a guide sleeve 503. A column 510 is provided on the movable shaft 509 located outside the side plate of the U-shaped bottom plate 502. The steel pipe is conveyed to the steel pipe joint placing mechanism 50 through the steel pipe feeding mechanism 10, and the steel pipe is placed between the two positioning blocks 505. A recess cooperating with the connecting apparatus to be charged are provided in the positioning block 505, and according to the size of the different connecting apparatus to be charged, the positioning blocks 505 can adjust the distance between the two positioning blocks 505 under the action of the rotary disc 504, the connecting block 507, the stationary round block 508 and the movable shaft 509 to adapt to the size of the connecting apparatus. When the steel pipe joint placing mechanism 50 is used, the axial positioning apparatus can limit the axial displacement of the steel pipe, the transverse positioning apparatus can limit the front and back displacement of the steel pipe, and the positioning block 505 can limit the up and down displacement of the steel pipe. Through the arrangement of the steel pipe joint placing mechanism, the steel pipe can be positioned well so that the connecting apparatus can be loaded on the steel pipe manually.

[0023] Referring to Figs. 6, 7 and 8, the host automatic grabbing mechanism 2 comprises a grabbing mechanism frame 200, a transverse guide rail assembly 201, a transverse movement assembly 202, an up-down movement assembly 203, a support rod 205, a pipe grabbing pneumatic assembly 206 and a transverse movement rod 208. The grabbing mechanism frame 200 is provided on the device rack 6, the transverse guide rail assembly 201 is mounted on the grabbing mechanism frame 200, the transverse movement assembly 202 is mounted on the transverse guide rail assembly 201 through a rodless cylinder 212, the up-down movement assembly 203 is mounted on the transverse movement assembly 202 through a first cylinder 211, the support rod 205 is mounted at the lower end of the up-down movement assembly 203, and at least two pipe grabbing pneumatic assemblies 206 are mounted on the support rod 205.

[0024] The transverse movement assembly 202 comprises the transverse movement rod 208 and the rodless cylinder 212, and the middle of the transverse movement rod 208 is connected with the transverse guide rail assembly 201 through the rodless cylinder 212. The rodless cylinder 212 drives the transverse movement rod 208 to move back and forth along the transverse guide rail assembly 201 when in use. The two sides of the transverse movement rod 208 are provided with a buffer 204 corresponding to the rodless cylinder 212, and the buffers 204 on the two sides can play a role of buffering. The two ends of the transverse movement rod 208 are provided with a guide apparatus comprising a linear bearing 213 and a guide shaft, wherein the guide shaft is mounted on the grabbing mechanism frame 200, and the linear bearings 213 cooperates with the guide shaft so as to play a role of guiding during the transverse movement rod 208 moves back and forth along the transverse guide rail assembly 201. The lower end of the support rod 205 is uniformly provided with stationary catch blocks 207, and each stationary catch block 207 is provided with a catch groove corresponding to the steel pipe, so that after the pipe grabbing pneumatic assembly 206 grabs the steel pipe, the upper end of the steel pipe adapts to the catch groove of the stationary catch block 207. The first cylinder 211 is mounted on the transverse movement rod 208 through the cylinder support leg 209 and the cylinder connecting plate 210.

[0025] The pipe grabbing pneumatic assembly 206 comprises a linear shaft 214, a cylinder fixing block 215, a second cylinder 216, a first connecting block 217, a cylinder shaft 218, press jaws 219, a second connecting block 220 and a speed adjusting joint 221. The upper ends of the two press jaws 219 are respectively movably connected with the lower ends of the two second connecting blocks 220. The middles of the two press jaws 219 are respectively movably connected with the two ends of the cylinder fixing block 215. The upper ends of the two second connecting blocks 220 are respectively movably connected with the two ends of the first connecting block 217. The second cylinder 216 is mounted on the cylinder fixing block 215. The speed adjusting joint 221 is provided on the second cylinder 216. The cylinder shaft 218 of the second cylinder 216 is connected with the middle of the first connecting block 217. The linear shaft 214 is mounted at the lower end of the cylinder fixing block 215; wherein the cylinder fixing block 215 is mounted at the upper end of the support rod 205 through the linear shaft 214. When the pipe grabbing pneumatic assembly 206 is used, the second cylinder 216 drives the first connecting block 217 to raise upwards, and under the action of the second connecting block 220 and the cylinder fixing block 215, the two press jaws 219 contract to grab the steel pipe; conversely, the second cylinder 216 drives the first connecting block 217 to descend downwards, which can drive the two press jaws 219 to open to release the steel pipe.

[0026] When the host automatic grabbing mechanism 2 works, the transverse movement assembly 202 controls the pipe grabbing pneumatic assembly 206 to move to a position above the steel pipe joint placing mechanism 50, the up-down movement assembly 203 controls the pipe grabbing pneumatic assembly 206 to descend to the grabbing position under the action of the first cylinder 211, and after the pipe grabbing pneumatic assembly 206 grabs the steel pipe, the up-down movement assembly 203 and the transverse movement assembly 202 move the steel pipe to the position of the host die setting mechanism 40 and loosen the steel pipe, and therefore the steel pipe feeding and grabbing operation is completed.

[0027] Referring to Figs. 14 and 15, the host die setting mechanism 40 comprises a host frame assembly 400 and a plurality of host die setting units provided on the host frame assembly 400. A host sleeve mechanism 402 is further provided on the outer side of the first host die setting unit. A distance measuring displacement sensor 401 is correspondingly mounted on the host frame assembly 400 at the lower end of each host die setting unit. A joint positioning mechanism 404 is mounted on each host die setting unit. Each host die setting unit comprises a host force arm assembly 403, a first oil cylinder 407, a second oil cylinder 408, a rodless cylinder group 409 and a die setting plate 410. The host force arm assembly 403 comprises two groups of force arm units. The lower end of the first oil cylinder 407 is movably connected with the lower end of one group of force arm units, the lower end of the second oil cylinder 408 is movably connected with the lower end of the other group of force arm units, and the first oil cylinder 407 and the second oil cylinder are both mounted at the power end of the rodless cylinder group 409. The rodless cylinder group 409 is mounted on the host frame assembly 400. The upper ends of the two groups of force arm units are movably connected through the die setting plate 410. The die setting plate 410 and the two groups of force arm units form a cavity for accommodating the steel pipe. A cutting die 406 is provided at the upper end of the die setting plate 410. Boss dovetail dies 405 are uniformly provided on the inner side at the upper end of the die setting plate 410 and the upper ends of the two force arm units. The host force arm assembly 403 is a force-multiplying lever mechanism. By the rodless cylinder group 409 drives the first oil cylinder 407 and the second oil cylinder 408 to rise to a preset point, the first oil cylinder 407 and the second oil cylinder 408 begin to extend, and the tail of the force arm is unfolded outwards by taking a connecting part of the force arm and the die setting plate 410 as a fulcrum, and thus the effect of double-force cold extrusion is achieved.

[0028] In this embodiment, each group of force arm units consists of two force arms. The joint positioning mechanism 404 comprises two groups of positioning units mounted between the two force arms. Each group of positioning units comprises a positioning cylinder and a positioning plate provided at the end of the positioning cylinder, the positioning cylinder is fixedly mounted between the two force arms, and the positioning plate is mounted at the power end of the positioning cylinder. When the steel pipe is located in the host die setting unit, the positioning cylinder drives the positioning plate to position the steel pipe.

[0029] In this embodiment, the host sleeve mechanism 402 comprises two sleeve force arms 4020 and two sleeve cylinders 4021. Lower ends of the two sleeve force arms 4020 are movably mounted on the host frame assembly 400, and the upper end of each sleeve force arm 4020 is connected with the power end of one sleeve cylinder 4021. The sleeve cylinders 4021 are fixedly mounted on a workbench 411 that is located at the upper end of the host frame assembly 400 and corresponds to the plurality of host die setting units.

[0030] In this embodiment, there may be six host die setting units (host force arm assembly 403), and the cold extrusion for flexibly changeable product specifications can be achieved. The distance measuring displacement sensor 401 mainly functions to detect a measurement precision of the force arm extension distance, thereby a pressed depth of the cold extruded steel pipe can be detected visually.

[0031] The host automatic grabbing mechanism 2 places the steel pipe loaded with the connecting apparatus at the host die setting unit, and the rodless cylinder group 409 drives a force arm cylinder to drive the host force arm assembly 403 to cold-extrude the connecting apparatus onto the steel pipe by the host die setting unit.

[0032] Referring to Figs. 11, 12 and 13, the finished product stacking mechanism 30 is a discharging mechanism that comprises a stacking mechanism rack assembly 301, a steel pipe lifting mechanism 302 and a steel pipe dropping mechanism 304. Both the front and rear sides of the stacking mechanism rack assembly 301 are provided with a linear rail 303. The steel pipe lifting mechanism 302 is provided at the rear side of the stacking mechanism rack assembly 301 and cooperates with the linear rail 303 at the rear side of the stacking mechanism rack assembly 301, and the steel pipe dropping mechanism 304 is provided at the front side of the stacking mechanism rack assembly 301 and cooperates with the linear rail 303 at the front side of the stacking mechanism rack assembly 301.

[0033] The steel pipe lifting mechanism 302 comprises a first standard cylinder 305, a rear support plate 309, side support plates 314, a positioning rod 315, a steel pipe bracket 310, a rotary rod 318 and a turnover mechanism. The first standard cylinder 305 is mounted on the stacking mechanism rack assembly 301, and the power end of the first standard cylinder 305 is connected with the rear support plate 309. The side support plates 314 are provided on two sides of the rear support plate 309 respectively. The positioning rod 315 is provided between the two side support plates 304. The rotary rod 318 is provided between the ends of the two side support plates 304. The steel pipe bracket 310 is provided on each rotary rod 318. Afirst stop block for preventing the steel pipe falling down is provided at the outer side end of each steel pipe bracket 310. A first steel pipe groove 320 is provided on each steel pipe bracket 310. The turnover mechanism is provided on the rotary rod 318.

[0034] The turnover mechanism comprises a pressure spring 311, a screw 312, a U-shaped positioning angle plate 313, a turnover collision rod 317, a stationary side plate 331 and a stationary stop post 332. The turnover collision rod 317 is mounted on the rotary rod 318. The bottom plate of the U-shaped positioning angle plate 313 is provided on the side support plate 314. The screw 312 is provided on the side plate at the lower end of the U-shaped positioning angle plate 313, and the pressure spring 311 is located on the screw 312. The upper end of the pressure spring 311 is connected with the turnover collision rod 317. The stationary side plate 331 is provided at the upper end of the stacking mechanism rack assembly 301. The stationary stop post 332 is provided on the inner side of the stationary side plate 331, and corresponds with the end of the turnover collision rod 317. The rear support plate 309 is connected with the side support plate 314 through the connecting angle plate 316. The connecting angle plate 316 is provided with a first slide rail 308 corresponding to the rear side linear rail 303 of the stacking mechanism rack assembly 301. The steel pipe lifting mechanism 302 can move up and down through the cooperation of the first slide rail 308 and the linear rail 303. A shaft sleeve 319 is provided on the rotary rod 318 at the inner side of the side support plate 314 so as to fix the position of the side support plate 314. The rear support plate 309 is provided with a cylinder connecting plate 307 provided with a cylinder connecting seat 306. The power end of the first standard cylinder 305 is connected with the cylinder connecting seat 306.

[0035] The steel pipe dropping mechanism 304 comprises a first short connecting rod 322, a first long connecting rod 323, a second long connecting rod 324, a second short connecting rod 325, a top plate 326, an upper bracket 327, a second slide rail 328 and a second standard cylinder 330. The upper bracket 327 is provided at two ends of the top plate 326 respectively. A second stop block for preventing the steel pipe falling down is provided at the outer side end of each upper bracket 327. A second steel pipe groove 329 is provided on each upper bracket 327. The second slide rail 328 corresponding to the front side linear rail 303 of the stacking mechanism rack assembly 301 is provided at the inner side of the top plate 326. The middle of the top plate 326 is movably connected with the two second short connecting rods 325. The lower end of each second short connecting rod 325 is movably connected with the second long connecting rod 324. The middles of the two second long connecting rods 324 are movably connected. The lower end of each second long connecting rod 324 is movably connected with the first long connecting rod 323. The middles of the two first long connecting rods 323 are movably connected. The lower end of each first long connecting rod 323 is movably connected with the first short connecting rod 322. The lower ends of the two first short connecting rods 322 are movably connected. The lower end of the second standard cylinder 330 is mounted at the joint of the first short connecting rod 322 and the first long connecting rod 323, and the power end of the second standard cylinder 322 is movably mounted at the middle and lower part of one of the second long connecting rods 324. The second standard cylinder 330 is activated to drive the upper bracket 327 to move up and down.

[0036] After the host die setting mechanism 40 finishes the cold extrusion of one steel pipe, the first standard cylinder 305 is activated to drive the steel pipe bracket 310 to lift the cold extruded steel pipe (i.e. the steel pipe with the connecting apparatus mounted), and when the end of the turnover collision rod 317 collides the stationary stop post 332, the turnover collision rod 317 drives the rotary rod 318 to rotate inwardly, and at this time, the steel pipe on the steel pipe bracket 310 rolls and falls onto the stationary side plate 331 and falls directly onto the upper bracket 327 of the steel pipe dropping mechanism 304 due to the inertia effect, and at this time, the second standard cylinder 330 contracts to drive the upper bracket 327 to descend to the discharging plate 337. Due to the inertia effect, the steel pipe on the upper bracket 327 falls along the bottom edge of the L-shaped recess 338 on the discharging plate 337 into a material placing area formed by material placing rods 336, so that the discharging of one steel pipe is completed, and the steel pipe lifting mechanism 302 and the steel pipe dropping mechanism 304 are reset so as to facilitate the discharging of the next steel pipe.

[0037] The rack assembly 301 comprises a square frame 333, two front support legs 334 provided at the front end of the square frame 333, and two rear support legs 335 provided at the rear end of the square frame 333. The height of the rear support leg 335 is larger than that of the front support leg 334. The front support legs 334 are connected with the rear support legs 335 through the material placing rods 336. The material placing area is formed on the material placing rod 336. The linear rails 303 are provided on the front side and the rear side of the rear support leg 335 respectively. The steel pipe dropping mechanism 304 and the steel pipe lifting mechanism 302 are respectively provided on the front side and the rear side of the rear support leg 335. The material placing rod 336 is connected with the rear support leg 334 through a discharging plate 337. An L-shaped recess 338 is provided in the discharging plate 337, and an obtuse angle is formed between the upper surface of the bottom edge of the L-shaped recess 338 and the inner surface of the side edge of the L-shaped recess 338. The height of an end of the material placing rod 336 on the side of the rear support leg 335 is greater than that of the other end of the material placing rod 336 on the side of the front support leg 334, so that the material placing rod 336 forms an inclined structure, and thus steel pipes can be sequentially stacked in the material placing area. The structure of the rack assembly 301 not only can mount the steel pipe dropping mechanism 304, but also can mount the steel pipe lifting mechanism 302. Meanwhile, by providing the material placing area, the steel pipe on the steel pipe lifting mechanism can be conveniently input into the steel pipe dropping mechanism, then the steel pipe on the steel pipe dropping mechanism is input into the material placing area. Moreover, the rack assembly is compact in structure and easy to be machined and mounted.

[0038] Referring to Fig. 21, which is a principle diagram of the control system 70 in this embodiment, the control system 70 comprises a communication control module 701, a crimping control module 702, and a PLC control module 703, wherein the communication control module 701 is used for uploading data of the device to an enterprise cloud platform 704 through a 4G SIM card or an ethernet to implement real-time monitoring of the device data; the crimping control module 702 is used for controlling a host force arm assembly 403 in the host die setting unit, and the crimping control module 702 may further acquire action data (e.g., a clamping angle etc.) of the force arm in the host force arm assembly 403, and calculate a reasonable clamping force of the host force arm assembly 403 according to the action data to implement accurate control. The PLC control module 703 is used for controlling the actions of the steel pipe feeding mechanism 10, the host automatic grabbing mechanism 20, the finished product stacking mechanism 30 and the steel pipe joint placing mechanism 50.

[0039] The process flow of the system controlled by the control system 70 is as follows. The PLC control module 703 controls the steel pipe feeding mechanism 10 to convey the steel pipe to the steel pipe joint placing mechanism 50 for automatic or manual loading. After the loading is completed, the PLC control module 703 controls the host automatic grabbing mechanism 20 to convey the steel pipe to the host die setting mechanism 40, and the crimping control module 702 controls the host die setting mechanism 40 to perform cold extrusion on the steel pipe. After the cold extrusion is completed, the PLC control module 703 controls the finished product stacking mechanism 30 to perform blanking and stacking on the steel pipe.

The second embodiment

[0040] Referring to Figs. 16-20, other structures of the present embodiment are the same as those of the first embodiment, except that the steel pipe joint placing mechanism 50 in this embodiment is an automatic loading mechanism that comprises a steel pipe swing mechanism 520, an accessory conveying mechanism 521 and an accessory mounting push rod mechanism 522, and a steel pipe fixed position is provided on the device rack 60. The steel pipe swing mechanism 520 is mounted at one end of the steel pipe fixed position. The accessory conveying mechanism 521 is provided on the device rack 60 on one side of the steel pipe fixed position. The accessory mounting push rod mechanism 522 is provided at the other end of the steel pipe fixed position. The steel pipe swing mechanism 520 is used for fixing the steel pipe at the steel pipe fixed position, and the accessory mounting push rod mechanism 522 is used for automatically mounting an accessory (i.e., the connecting apparatus) conveyed from the accessory conveying mechanism 521 on the steel pipe.

[0041] In this embodiment, the steel pipe swing mechanism 520 comprises a mechanism mounting plate 5200, a steel pipe clamping mechanism and a swing mechanism. A notch 5201 is provided on the device rack 60. The mechanism mounting plate 5200 is mounted on the device rack 60 at the lower end of the notch 5201. The steel pipe clamping mechanism is provided on the mechanism mounting plate 5200 and extends out through the notch 5201. The swing mechanism is mounted on the mechanism mounting plate 5200 for driving the steel pipe clamping mechanism to swing; the steel pipe clamping mechanism comprises a steel pipe placing plate 5202, a clamping plate 5203, a first link 5204 and a clamping cylinder 5205. The swing mechanism comprises a swing motor 5206, a speed reducer 5207, a swinging plate 5208, a swinging rod 5210, a second link 5211, a third second link 5212 and a fourth second link 5213. The front side and the back side of the mechanism mounting plate 5200 are provided with the swinging plate 5208 respectively. An arc swinging groove 5209 is provided on swinging plate 5208. The lower end of the steel pipe placing plate 5202 is provided in the arc swinging groove 5209 through the two swinging rods 5210, and the upper end of the steel pipe placing plate 5202 is provided with a steel pipe recess matched with the steel pipe. The clamping plates 5203 are movably mounted on the two sides of the upper end of the steel pipe placing plate 5202 respectively. An accommodating recess for accommodating the steel pipe is provided on the opposite inner sides of the two clamping plates 5203. The lower end of one of the clamping plates 5203 is connected with the clamping cylinder 5205 through the first link 5204. The clamping cylinder 5205 is mounted at the lower end of the swinging plate 5208. the output end of the swing motor 5206 is connected with one end of the second link 5211 through the speed reducer 5207. The other end of the second link 5211 is connected to the middle of the fourth second link 5213 through the third second link 5212. The lower end of the fourth second link 5213 is movably connected to the mechanism mounting plate 5200, and the other end of the fourth second link 5213 is movably connected with one of the swinging rods 5210. In use, the steel pipe is placed at the steel pipe fixed position, one end of the steel pipe is located within the steel pipe recess at the upper end of the steel pipe placing plate 5202, and the clamping cylinder 5205 drives the clamping plates 5203 through the first link 5204 to clamp and position the steel pipe within the steel pipe recess. Because there is an inevitable size tolerance and burr obstruction during the mounting of the accessory to the pipe, the designed steel pipe clamping mechanism can realize the clamping of the steel pipe under the action of the cylinder extension force. The speed reducer 5207 rotates to drive the swing mechanism to rotate the steel pipe 180 degrees, that is, the swing motor 5206 outputs power to the speed reducer 5207, and the speed reducer 5207 drives the steel pipe placing plate 5202 through the second link 5211, the third second link 5212 and the fourth second link 5213 to swing back and forth along the arc swinging groove 5209, so that the accessory can be smoothly inserted into the steel pipe.

[0042] The accessory conveying mechanism 521 is a chain conveying mechanism mounted on one side of the device rack 60, and accessories on the chain conveying mechanism are conveyed to the steel pipe fixed positions one by one.

[0043] The accessory mounting push rod mechanism 522 comprises an accessory mounting cylinder 5220, a stationary plate 5221, a push rod 5222 and a link telescopic mechanism 5223. The accessory mounting cylinder 5220 is mounted on the device rack 60 through the stationary plate 5221. The push rod 5222 is connected with the power end of the accessory mounting cylinder 5220. One end of the link telescopic mechanism 5223 is movably connected to the stationary plate 5221, and the other end of the link telescopic mechanism 5223 is movably connected to the lower side of one end of the steel pipe fixed position. After the accessories is conveyed to the steel pipe fixed position, the accessory mounting cylinder 5220 drives the push rod 5222 to mount the accessories to the steel pipe one by one, and the link telescopic mechanism 5223 can ensure the stability during the mounting of the pipe.

[0044] Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes or modifications may be made by the patentees within the scope of the appended claims, and fall within the scope of the invention as long as they do not exceed the scope of the invention described in the claims.

Claims

1. An intelligent automatic multi-combination cold extrusion device for a steel pipe, characterized in that: the device comprises a steel pipe feeding mechanism, a host automatic grabbing mechanism, a finished product stacking mechanism, a host die setting mechanism, a steel pipe joint placing mechanism, a device rack and a control system, wherein the steel pipe feeding mechanism is provided on one side of the device rack, the steel pipe joint placing mechanism is provided on the device rack, the host die setting mechanism is provided on the other side of the steel pipe joint placing mechanism, and the finished product stacking mechanism is provided on the other side of the device rack; the control system controls the steel pipe feeding mechanism to convey the steel pipe to the steel pipe joint placing mechanism for automatic or manual loading; after the loading is completed, the control system controls the host automatic grabbing mechanism to convey the steel pipe to the host die setting mechanism for cold extrusion of the steel pipe by the host die setting mechanism; and after the cold extrusion is completed, the control system controls the finished product stacking mechanism to perform blanking and stacking on the steel pipe.

2. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 1, wherein the steel pipe feeding mechanism comprises a feeding rack, a feeding unit and a driving motor, wherein a plurality of feeding units are provided on the feeding rack, and each feeding unit comprises an L-shaped frame, a driving sprocket, a driven sprocket, a pen-shaped cylinder, a cross rod, a rotary block, a chain and a catch jaw; the L-shaped frame is mounted on the feeding rack, and the upper surface of the bottom edge of the L-shaped frame is of a structure inclining towards the inner side; the driving sprocket and the driven sprocket are respectively mounted at the lower end and the upper end of the side edge of the L-shaped frame; the chain is connected between the driving sprocket and the driven sprocket; at least two pairs of catch jaws are provided on the chain; the cross rod is mounted at the upper end of the side edge of the L-shaped frame through the rotary block; the pen-shaped cylinder is mounted at the lower end of the side edge of the L-shaped frame; the middle of the cross rod is movably connected with the output end of the pen-shaped cylinder; the output shaft of the driving motor is connected with the driving sprocket; and the inner side of the side edge of each L-shaped frame is provided with a limiting rod.

3. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 1, wherein the host automatic grabbing mechanism comprises a grabbing mechanism frame, a transverse guide rail assembly, a transverse movement assembly, an up-down movement assembly, a support rod, a pipe grabbing pneumatic assembly and a transverse movement rod, wherein the grabbing mechanism frame is provided on the device rack; the transverse guide rail assembly is mounted on the grabbing mechanism frame; the transverse movement assembly is mounted on the transverse guide rail assembly through a rodless cylinder; the up-down movement assembly is mounted on the transverse movement assembly through a first cylinder; the support rod is mounted at the lower end of the up-down movement assembly; and at least two pipe grabbing pneumatic assemblies are mounted on the support rod.

4. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 1, wherein the pipe grabbing pneumatic assembly comprises a linear shaft, a cylinder fixing block, a second cylinder, a first connecting block, a cylinder shaft, a press jaw, a second connecting block and a speed adjusting joint, wherein the upper ends of the two press jaws are respectively movably connected with the lower ends of the two second connecting blocks; the middles of the two press jaws are respectively movably connected with the two ends of the cylinder fixing block; the upper ends of the two second connecting blocks are respectively movably connected with the two ends of the first connecting block; the second cylinder is mounted on the cylinder fixing block; the speed adjusting joint is provided on the second cylinder; the cylinder shaft of the second cylinder is connected with the middle of the first connecting block; and the linear shaft is mounted at the lower end of the cylinder fixing block.

5. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 1, wherein the steel pipe joint placing mechanism is a steel pipe positioning mechanism that comprises a first base support, a transverse positioning apparatus provided on the first base support, and an axial positioning apparatus provided on the device rack and located at two ends of the first base support; the transverse positioning apparatus comprises a plurality of positioning units, each positioning unit comprising a U-shaped bottom plate, a rotary disc, a positioning block, a connecting block, a stationary round block and a movable shaft; the movable shafts are mounted on the inner sides of two side plates of the U-shaped bottom plate; the positioning block is mounted on the movable shaft; the lower end of each of the positioning blocks is mounted with a connecting post; an elongated slot is provided on the bottom plate of the U-shaped bottom plate; the lower end of each connecting post is movably connected with one end of one connecting block, the bottom of the connecting post cooperates with the elongated slot, and the other end of the connecting block is movably connected with one end of the stationary round block; and the rotary disc is mounted at the upper end of the stationary round block.

6. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 1, wherein the steel pipe joint placing mechanism is an automatic loading mechanism that comprises a steel pipe swing mechanism, an accessory conveying mechanism and an accessory mounting push rod mechanism; a steel pipe fixed position is provided on the device rack, the steel pipe swing mechanism is mounted at one end of the steel pipe fixed position, the accessory conveying mechanism is provided on the device rack on one side of the steel pipe fixed position, and the accessory mounting push rod mechanism is provided at the other end of the steel pipe fixed position; the steel pipe swing mechanism is used for fixing the steel pipe at the steel pipe fixed position, and the accessory mounting push rod mechanism is used for automatically mounting an accessory conveyed from the accessory conveying mechanism on the steel pipe;
the steel pipe swing mechanism comprises a mechanism mounting plate, a steel pipe clamping mechanism and a swing mechanism; a notch is provided on the device rack; the mechanism mounting plate is mounted on the device rack at the lower end of the notch; the steel pipe clamping mechanism is provided on the mechanism mounting plate and extends out through the notch; the swing mechanism is mounted on the mechanism mounting plate for driving the steel pipe clamping mechanism to swing; the steel pipe clamping mechanism comprises a steel pipe placing plate, clamping plates, a first link and a clamping cylinder; the swing mechanism comprises a swing motor, a speed reducer, a swinging plate, swinging rods, a second link, a third second link and a fourth second link; the front side and the back side of the mechanism mounting plate are provided with the swinging plate respectively; an arc swinging groove is provided on swinging plate; the lower end of the steel pipe placing plate is provided in the arc swinging groove through the two swinging rods, and the upper end of the steel pipe placing plate is provided with a steel pipe recess matched with the steel pipe; the clamping plates are movably mounted on the two sides of the upper end of the steel pipe placing plate respectively; an accommodating recess for accommodating the steel pipe is provided on the opposite inner sides of the two clamping plates; the lower end of one of the clamping plates is connected with the clamping cylinder through the first link; the clamping cylinder is mounted at the lower end of the swinging plate; the output end of the swing motor is connected with one end of the second link through the speed reducer, the other end of the second link is connected with the middle of the fourth second link through the third second link, the lower end of the fourth second link is movably connected to the mechanism mounting plate, and the other end of the fourth second link is movably connected with one of the swinging rods;
the accessory conveying mechanism is a chain conveying mechanism mounted on one side of the device rack;
the accessory mounting push rod mechanism comprises an accessory mounting cylinder, a stationary plate, a push rod and a link telescopic mechanism, wherein the accessory mounting cylinder is mounted on the device rack through the stationary plate, the push rod is connected with the power end of the accessory mounting cylinder, one end of the link telescopic mechanism is movably connected to the stationary plate, and the other end of the link telescopic mechanism is movably connected to the lower side of one end of the steel pipe fixed position.

7. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 1, wherein the finished product stacking mechanism comprises a stacking mechanism rack assembly, a steel pipe lifting mechanism and a steel pipe dropping mechanism; both the front and rear sides of the stacking mechanism rack assembly are provided with a linear rail; the steel pipe lifting mechanism is provided at the rear side of the stacking mechanism rack assembly and cooperates with the linear rail at the rear side of the stacking mechanism rack assembly; and the steel pipe dropping mechanism is provided at the front side of the stacking mechanism rack assembly and cooperates with the linear rail at the front side of the stacking mechanism rack assembly.

8. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 7, wherein the steel pipe lifting mechanism comprises a first standard cylinder, a rear support plate, side support plates, a positioning rod, steel pipe brackets, rotary rods and a turnover mechanism, wherein the first standard cylinder is mounted on the stacking mechanism rack assembly, the power end of the first standard cylinder is connected with the rear support plate; the side support plates are provided on two sides of the rear support plate respectively; the positioning rod is provided between the two side support plates; the rotary rod is provided between the ends of the two side support plates; the steel pipe bracket is provided on each rotary rod; a first stop block is provided at the outer side end of each steel pipe bracket; a first steel pipe groove is provided on each steel pipe bracket; the turnover mechanism is provided on the rotary rod; the turnover mechanism comprises a pressure spring, a screw, a U-shaped positioning angle plate, a turnover collision rod, a stationary side plate and a stationary stop post, wherein the turnover collision rod is mounted on the rotary rod, the bottom plate of the U-shaped positioning angle plate is mounted on the side support plate; the screw is provided on the side plate at the lower end of the U-shaped positioning angle plate, and the pressure spring is located on the screw; the upper end of the pressure spring is connected with the turnover collision rod, the stationary side plate is provided at the upper end of the stacking mechanism rack assembly, and the stationary stop post is provided on the inner side of the stationary side plate and corresponds with the end of the turnover collision rod.

9. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 7, wherein the steel pipe dropping mechanism comprises a first short connecting rod, a first long connecting rod, a second long connecting rod, a second short connecting rod, a top plate, an upper bracket, a second slide rail and a second standard cylinder, wherein the upper bracket is provided at two ends of the top plate respectively, a second stop block is provided at the outer side end of each upper bracket, a second steel pipe groove is provided on each upper bracket, the second slide rail corresponding to the front side linear rail of the stacking mechanism rack assembly is provided at the inner side of the top plate, the middle of the top plate is movably connected with the two second short connecting rods, the lower end of each second short connecting rod is movably connected with the second long connecting rod, the middles of the two second long connecting rods are movably connected, the lower end of each second long connecting rod is movably connected with the first long connecting rod, the middles of the two first long connecting rods are movably connected, the lower end of each first long connecting rod is movably connected with the first short connecting rod, and the lower ends of the two first short connecting rods are movably connected, the lower end of the second standard cylinder is mounted at the joint of the first short connecting rod and the first long connecting rod, and the power end of the second standard cylinder is movably mounted at the middle and lower part of one of the second long connecting rods.

10. The intelligent automatic multi-combination cold extrusion device for a steel pipe according to claim 1, wherein the host die setting mechanism comprises a host frame assembly and a plurality of host die setting units provided on the host frame assembly; a host sleeve mechanism is further provided on the outer side of the first host die setting unit; a distance measuring displacement sensor is correspondingly mounted on the host frame assembly at the lower end of each host die setting unit; a joint positioning mechanism is mounted on each host die setting unit; each host die setting unit comprises a host force arm assembly, a first oil cylinder, a second oil cylinder, a rodless cylinder group and a die setting plate, wherein the host force arm assembly comprises two groups of force arm units, the lower end of the first oil cylinder is movably connected with the lower end of one group of force arm units, the lower end of the second oil cylinder is movably connected with the lower end of the other group of force arm units, the first oil cylinder and the second oil cylinder are both mounted at the power end of the rodless cylinder group, the rodless cylinder group is mounted on the host frame assembly, the upper ends of the two groups of force arm units are movably connected through the die setting plate, the die setting plate and the two groups of force arm units form a cavity for accommodating the steel pipe, a cutting die is provided at the upper end of the die setting plate; and boss dovetail dies are uniformly provided on the inner side at the upper end of the die setting plate and the upper ends of the two force arm units;
each group of force arm units consists of two force arms, the joint positioning mechanism comprises two groups of positioning units mounted between the two force arms, each group of positioning units comprises a positioning cylinder and a positioning plate provided at the end of the positioning cylinder, the positioning cylinder is fixedly mounted between the two force arms, and the positioning plate is mounted at the power end of the positioning cylinder;
the host sleeve mechanism comprises two sleeve force arms and two sleeve cylinders, and lower ends of the two sleeve force arms are movably mounted on the host frame assembly, and the upper end of each sleeve force arm is connected with the power end of one sleeve cylinder; the sleeve cylinders are fixedly mounted on a workbench that is located at the upper end of the host frame assembly and corresponds to the plurality of host die setting units.

Drawing