DEVICE TO COMPLETE REINFORCEMENT CAGES AND RELATIVE METHOD

Description

FIELD OF THE INVENTION

[0001] The invention concerns a device and a method to complete reinforcement cages made with round pieces or metal profiles in general, used in reinforced concrete structures such as beams, pillars or foundations.

[0002] To be more exact, the invention is used to insert a desired number of longitudinal completion rods inside the perimeter of the stirrups of a pre-cage during the step when the pre-cage itself is made.

[0003] In the invention, the term "pre-cage" indicates a partly assembled cage, both as a structure formed by stirrups and a desired number of longitudinal rods according to the design project, and also as a structure formed by stirrups and auxiliary rods with the function of maintaining the stirrups joined together during the pre-assembly step.

BACKGROUND OF THE INVENTION

[0004] Metal cages used for reinforcement purposes in reinforced concrete structures comprise a plurality of longitudinal rods to which stirrups are associated, separated lengthwise at intervals.

[0005] The cages can be assembled manually or automatically, by means of suitable machines known as cage-forming machines, which allow to make good quality cages with less workforce required (see for example EP-A-0 791 416).

[0006] In the state of the art, the cages are assembled in two successive steps: firstly, a substantially standardized pre-cage is prepared by attaching auxiliary longitudinal profiles to the stirrups, the function of which is to keep the stirrups joined together; subsequently the cage is completed with the longitudinal rods according to the design project, mostly attached inside the perimeter of the stirrups.

[0007] Although conventional procedures simplify some steps in making the cages, they have the serious problem of inserting the longitudinal rods inside the closed perimeter of the stirrups once the pre-cage is complete.

[0008] This operation is very difficult, especially if the cages, and hence the relative longitudinal rods, are very long; it therefore entails risks to the safety of the workers, a numerous workforce, particular equipment and risk of damage to the material.

[0009] Various solutions have been proposed which provide to keep the longitudinal rods raised with respect to a supporting plane on which the pre-cage is progressively formed and advances; although these solutions are satisfactory, in general, they can cause in some cases the partial deformation of and damage to the perimeter edges of the stirrups or the auxiliary profiles.

[0010] The present Applicant has devised and embodied this invention to overcome these shortcomings and to obtain further advantages.

SUMMARY OF THE INVENTION

[0011] The invention is set forth and characterized in the main claims, while the dependent claims describe other characteristics of the invention.

[0012] The purpose of the invention is to achieve a device and a method suitable to automate the operation of inserting a desired number of longitudinal rods inside the perimeter of the stirrups of a pre-cage while the latter is being formed, without risks of deformation or damage to the components of the cage.

[0013] Another purpose is to achieve a device suitable to facilitate the discharge of the finished pre-cage, with the longitudinal rods located inside the perimeter of the stirrups.

[0014] The device according to the invention comprises at least a supporting plane, arranged downstream of a cage-forming machine and on which the pre-cage is able to advance while it is progressively formed; the longitudinal rods to be inserted inside the perimeter of the stirrups are arranged on the supporting plane.

[0015] According to one characteristic of the invention, the supporting plane is able to move cyclically, in a longitudinal direction and in a manner mating with the advance movement of the pre-cage being formed and for a travel substantially mating with the interaxis (step) of the relative stirrups.

[0016] In cooperation with the supporting plane there is at least a fixed retaining and abutment element on which the front ends of the longitudinal rods to be inserted are able to abut; the longitudinal position of the abutment element is advantageously adjustable according to the length of the rods.

[0017] The device according to the invention also comprises lifting means, arranged substantially transverse and at intervals along the supporting plane, able to keep the longitudinal rods at least temporarily raised to allow them to be inserted inside the perimeter of the stirrups.

[0018] To be more exact, the lifting means are able to assume at least a first position, wherein they are arranged below the surface of the supporting plane, and a second position wherein they are raised with respect to the surface for a value at least such as to allow the rods resting on them to pass over the lower side of the stirrups.

[0019] In a preferential embodiment, the lifting means consist of oscillating arms.

[0020] According to a variant, the lifting means consist of arms movable vertically.

[0021] According to another variant, the device according to the invention comprises a command and control unit able to govern the cycle of moving the supporting plane and the lifting means, according to the work cycle of the cage-forming machine to which the device is associated.

[0022] According to the invention, the longitudinal completion rods are arranged on the supporting plane and then the pre-cage is begun.

[0023] With every forward step of the pre-cage, there corresponds first a correlated forward movement of the plane, and then the plane retreats by the same value. When the plane advances together with the pre-cage, the lifting means are active, that is to say, raised, so that the longitudinal rods, which are held stationary with respect to the plane by the abutment element, are progressively inserted into the perimeter of the stirrups; when the plane retreats, the lifting means are de-activated, that is, lowered, so that the plane can return to the original position without interference between the lifting means and the stirrups, with the rods resting on the lower side of the perimeter of the stirrups.

[0024] In the case where the oscillating lifting arms are used, they are activated, when the pre-cage is complete, to overturn the pre-cage on one side to allow it to be discharged.

[0025] According to a variant, before the pre-cage is discharged, the plane advances slightly to free the rear end of the pre-cage from interference with the operating assemblies and with the structure of the cage-forming machine.

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] These and other characteristics of the invention will be clear from the following description of a preferential form of embodiment, given as a non-restrictive example, with reference to the attached drawings wherein:

Fig. 1 is a view from above of a device according to the invention in association with a cage-forming machine suitable to produce pre-cages;

Fig. 2 is a longitudinal section of the cage-forming machine shown in Fig. 1;

Fig. 3 is an enlarged scale transverse section of the device according to the invention;

Fig. 4 shows a variant of Fig. 3;

Figs. 5a-5h show some steps in the method according to the invention.

DETAILED DESCRIPTION OF PREFERENTIAL EMBODIMENT

[0027] In the attached Figures, the number 10 denotes in its entirety a device able to insert longitudinal completion rods 13 inside the closed perimeter of stirrups 12 of a pre-cage 11.

[0028] The device 10 is arranged downstream of a cage-forming machine 15 able to produce pre-cages 11 consisting, in the embodiment shown here, of two auxiliary profiles 14 and a plurality of stirrups 12; in this case, the auxiliary profiles 14 are shaped like a loop in correspondence with the points where they are attached to the stirrups 12 and are associated outside with the latter.

[0029] The cage-forming machine 15 comprises a frame 22 on which, for each of the auxiliary profiles 14, a drawing assembly 16, a first 17 and second straightening assembly 18, a shaping assembly and a welding assembly 20 are assembled.

[0030] Every drawing assembly 16 is able to make a relative auxiliary profile 14 advance, possibly unwinding it from a reel located upstream of the cage-forming machine 15; the straightening assemblies 17 and 18 serve to straighten the profile 14 respectively on the horizontal plane and on the vertical plane, the shaping assembly 19 is able to achieve relative loops along the profile 14 and finally the welding assembly 20 is able to attach the auxiliary profile 14 to the stirrups 12 which are located one after the other in the attachment position. The welding assembly 20 can include retaining means able to keep the stirrups 12 in position during the attachment operations.

[0031] The cage-forming machine 15 also comprises tubular guide elements 21 inside which the auxiliary rods 13 are able to slide. The assemblies 16-20 acting on an auxiliary rod 14 are assembled on a slider 23 able to move with respect to the frame 22, so as to adjust the position thereof with respect to the assemblies 16-20 acting on the other auxiliary profile 14.

[0032] The device 10 according to the invention comprises a supporting plane 24 extending lengthwise as an extension of the cage-forming machine 15; the pre-cage 11 as it progressively forms is able to advance thereon. The longitudinal completion rods 13 to be inserted inside the perimeter of the stirrups 12 are also able to be arranged on the supporting plane 24.

[0033] The supporting plane 24 is made of several elements 24b and is assembled on a relative frame 26, together with which it can move lengthwise with respect to two bases 25 resting on the floor; one of them is visible in Figs. 2, 3 and 4.

[0034] The frame 26 comprises two longitudinal profiles 26a, extending lengthwise substantially for as long as the plane 24; wheels 30 able to slide inside guides 31 solidly associated with the bases 25 are assembled on said profiles 26a.

[0035] In this case, the frame 26, and hence the supporting plane 24, is moved by a motor reducer unit 27 assembled on one of the bases 25; the motor reducer unit 27 is able to make rotate, selectively in both directions, a pinion 28 engaged on a rack 29 associated with a longitudinal profile 26a of the frame 26, causing the supporting plane 24 to move forwards or backwards with respect to the cage-forming machine 15.

[0036] To be more exact, the supporting plane 24 can move from a first retracted position, wherein it is closer to the cage-forming machine 15, to a second advanced position; the travel of the supporting plane 24 is advantageously equal to the interaxis "i" between the stirrups 12 of the forming pre-cage 11.

[0037] The device 10 also comprises a command and control unit of the programmable type, not shown here, able to govern the cycle of the motor reducer unit 27 to define the travel "c" according to the work cycle of the cage-forming machine 15.

[0038] Along the frame 26 there is a plurality of arms 32, arranged substantially transverse with respect to the longitudinal profiles 26a and separated at intervals along the supporting plane 24.

[0039] The arms 32 are housed in corresponding slits 33 made between the elements 24b of the supporting plane 24; the arms 32 are able to assume at least a first lowered position "I", wherein they are arranged below the upper surface 24a of the supporting plane 24, and a second raised position "II", wherein they are arranged substantially horizontal.

[0040] In the raised position "II", the upper edge 32a of the arms 32 is located at a height "h" from the surface 24a of the plane 24 which is greater than the diameter of the stirrups 12, so as to allow the progressive insertion of the rods 13 into the perimeter of the stirrups 12 without knocking or getting stuck.

[0041] The arms 32 are arranged in positions such that they never interfere with the stirrups 12 of the forming pre-cage 11; in a preferential embodiment, the distance "d" between the arms 32 is an integral multiple of the interaxis "i" between the stirrups 12.

[0042] In this case, in the retracted position of the supporting plane 24, the first arm 32, that is, the one nearest the cage-forming machine 15, is located at a distance "e" from the vertical plane "Y" on which the stirrups 12 are attached, equal to the sum of the interaxis "i" and an additional offset value "x".

[0043] In the embodiment shown in Figs. 1-3, the arms 32 are associated with a longitudinal bar 34 arranged next to the supporting plane 24 and able to be made to rotate, when so commanded by the command and control unit, by actuators 35 associated with the frame 26. The actuators 35 have their stems 35a pivoting on relative levers 36 solid with the longitudinal bar 34; by activating the actuators 35 the longitudinal bar 34 is made to rotate causing the arms 32 to oscillate between the first position "I" and the second position "II".

[0044] As can be seen in Fig. 3, the arms 32 can assume a third position "III", raised and inclined with respect to the supporting plane 24, which is assumed in order to laterally discharge the finished pre-cage 11, with the rods 13 inside it.

[0045] In the variant shown in Fig. 4, the arms 32 are attached to a connection beam 38, with which the stems 37a of vertical axis actuators 37 are associated at the lower part; by activating the actuators 37, the arms 32 are able to be arranged either in the first position "I" or in the second position "II", remaining substantially horizontal.

[0046] In cooperation with the supporting plane 24, in a substantially terminal position thereof, there is a fixed abutment element 39, against which the front ends of the longitudinal rods 13 are arranged; the position of the abutment element 39 is advantageously adjustable according to the length of the longitudinal rods 13 to be used.

[0047] The device 10 according to the invention functions as follows. First, the longitudinal rods 13 are arranged on the supporting plane 24, then on the arms 32 too, adjusting the position of the element 39 so that it serves as an abutment for the ends of the rods 13.

[0048] In this step, the supporting plane 24 is in its first retracted position "A", while the cage-forming machine 15 attaches a first stirrup 12 to the auxiliary profiles 14 (Fig. 5a).

[0049] When the first stirrup 12 has been attached to the profiles 14, the pre-cage 11 advances by one step equal to the interaxis "i" and simultaneously the supporting plane 24 moves into its second, advanced position "B" with the arms 32 in the second raised position "II" (Fig. 5b). Since the rods 13 are held stationary by the abutment element 39, the advance of the plane 24 causes the rods 13 to be progressively inserted into the perimeter of the first stirrup 12.

[0050] Subsequently, while the cage-forming machine 15 attaches a second stirrup 12 to the profiles 14, the supporting plane 24 retreats until it returns to its first position "A", as the pre-cage 11 is stationary because it is held by the assembly 16; in this condition, the arms 32 are lowered into the low position "I", so that they can slide below the lower side of the stirrup 12 (Fig. 5c).

[0051] The cage-forming machine 15 then provides to make the pre-cage 11 advance again, and the supporting plane 24, on which the first stirrup 12 is also resting, moves in mating manner, moving to the advanced position "B", while the arms 32 are again raised to their second position "II" to continue the insertion of the rods 13 into the second stirrup 12 too (Fig. 5d).

[0052] Then, while the cage-forming machine 15 attaches the third stirrup 12, the supporting plane 24 again retracts towards its position "A", after having again lowered the arms 32 (Fig. 5e).

[0053] This cyclical movement is repeated for every stirrup 12 (Figs. 5f, 5g, 5h), until the longitudinal rods 13 are inserted into the perimeter of all the stirrups 12 of the pre-cage 11.

[0054] When the work cycle has been completed, the cage to be made can be completed by welding the longitudinal rods 13 to the pre-cage 11, without needing complex and difficult operations of inserting the longitudinal rods 13. This operation can be made directly on the supporting plane 24 or in another suitable site.

[0055] As we have said, the finished cage or pre-cage 11 with the longitudinal rods 13 inserted can be laterally discharged by first making the plane 24 advance slightly to free the pre-cage 11 from interference with the operating assemblies of the cage-forming machine 15, and then moving the arms 32 to their third position "III".

[0056] It is obvious, however, that modifications and/or additions can be made to the device 10 and the method as described heretofore, without departing from the spirit and scope of the invention.

[0057] For example, the means to move the supporting plane 24 and the arms 32 can be of a different type from that shown here. The supporting plane 24 can extend as far as in correspondence with the vertical plane "Y" where the stirrups 12 are attached.

[0058] The supporting plane 24 can also rest directly on the floor, and be equipped with wheels, pads or similar, without requiring the base 25 and the movement system shown above. The abutment element 39 can be associated with its own movement means on the ground, and possibly be shaped to cooperate with rods 13 of a particular section, other than round.

[0059] It is also obvious that, although the invention has been described with reference to specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of device and perfect identical methods, all of which shall come within the scope of the invention, which is defined by the appended claims.

Claims

1. Device to complete reinforcement cages, used to insert a desired number of longitudinal rods (13) inside the perimeter of stirrups (12) of a pre-cage (11) while the pre-cage (11) is being formed, said device comprising at least a supporting plane on which the pre-cage (11) is made to progressively advance and on which said rods (13) to be inserted are able to be arranged, the device being characterized in that it comprises lifting means (32) separated at intervals along said supporting plane (24) and able to assume a first low position ("I") located below said plane (24) and a second high position ("II") wherein they are able to lift said rods (13) above the lower edge of said stirrups (12), and a fixed abutment element (39) against which the front ends of said rods (13) are able to abut, and in that said supporting plane (24) is able to move forwards, together with said pre-cage (11), from a first position ("A") to a second position ("B"), with said lifting means in the high position ("II"), to progressively insert the rods (13), held by the element (39), into the perimeter of the stirrups (12) and then, with said pre-cage (11) stationary and with said lifting means (32) in the low position ("I"), from said second position ("B") to said first position ("A"), to return to start-of-cycle position.

2. Device as in Claim 1, characterized in that the position of said abutment element (39) can be adjusted lengthwise along said supporting plane (24).

3. Device as in Claim 1, characterized in that the travel of said supporting plane (24) from said first position ("A") to said second position ("B") mates with the interaxis ("i") between the stirrups (12) of said pre-cage (11).

4. Device as in any claim hereinbefore, characterized in that said lifting means comprise arms (32) arranged transverse with respect to said supporting plane (24) and housed inside compartments (33) separated lengthwise along said plane (24).

5. Device as in Claim 4, characterized in that said arms (32) are associated with means (34) rotating in both directions and able to cause said arms (32) to oscillate between said first low position ("I") and said second high position ("II") and vice versa.

6. Device as in Claim 5, characterized in that said arms (32) are able to assume a third position ("III") more raised with respect to said supporting plane (24) in which they are able to determine the discharge of the pre-cage (11) from said plane (24) onto one side.

7. Device as in Claim 4, characterized in that said arms (32) are associated with a connection beam (38) able to move vertically to take them at least from said first low position ("I") to said second high position ("II") and vice versa.

8. Device as in any claim hereinbefore, characterized in that said supporting plane (24) is associated with at least a relative fixed base (25) with respect to which it is movable lengthwise.

9. Device as in Claim 8, characterized in that it comprises motor means (27) able to act on at least a pinion (28) engaged on rack means (29) to move said supporting plane (24) with respect to said base (25).

10. Device as in Claim 8, characterized in that said supporting plane (24) is provided with sliding means (30) able to move inside mating guides (31) associated with said base (25).

11. Device as in any claim hereinbefore, characterized in that it comprises a command and control unit able to govern and control the movement cycle of said supporting plane (24) and of said lifting means (32).

12. Device as in any claim hereinbefore, wherein said device is located downstream of a cage-forming machine (15) defining a plane ("Y") for positioning the stirrups (12) to attach them to relative longitudinal connection profiles (14), characterized in that, in the first position ("A") of said supporting plane (24), the lifting means (32) nearest said cage-forming machine (15) is located at a distance ("e") from said plane ("Y") substantially equal to the sum of the interaxis ("i") between said stirrups (12) and an additional value ("x"): ("e"="i"+"x").

13. Method to complete reinforcement cages, used to insert a desired number of longitudinal rods (13) inside the perimeter of stirrups (12) of a pre-cage (11) while the pre-cage (11) itself is being formed, the method providing the following steps:

- said longitudinal rods (13) are positioned on a supporting plane (24) with the respective front ends arranged against a fixed abutment element (39);

- at least a first stirrup (12) is positioned in correspondence with a work plane ("Y"), and at least one auxiliary longitudinal profile (14) is attached to said stirrup (12);

- said stirrup (12) and said at least one auxiliary profile (14) are fed forwards;

- a new stirrup (12) is positioned in correspondence with the work plane ("Y") and the cycle is repeated,

the method being characterized in that
for every cycle to position, attach and feed every new stirrup (12), it provides a first step wherein said supporting plane (24) advances in coordination with said at least one stirrup (12), and a second step wherein said supporting plane (24) retreats with said at least one stirrup (12) stationary, in said first advance step, wherein the supporting plane (24) is fed forwards, lifting means (32) being activated, arranged separated at intervals along said supporting plane (24) and able to hold said rods (13) raised, held stationary by the abutment element (39), to allow said rods (13) to be inserted inside the perimeter of said stirrups (12), and in said second step, wherein the supporting plane (24) retreats, said lifting means (32) being lowered to allow them to pass below said stirrups (12).

14. Method as in Claim 13, characterized in that it provides that said supporting plane (24) is moved for a travel ("c") mating with the interaxis between the stirrups (12) of said pre-cage (11).

15. Method as in Claim 13 or 14, characterized in that it provides, when the pre-cage (11) is complete, at least a step to laterally discharge said pre-cage (11) from the supporting plane (24) by taking said lifting means (32) to a third position ("III") raised higher with respect to said supporting plane (24).

16. Method as in Claim 15, characterized in that it provides, before the lateral discharge step, to advance the supporting plane (24) to free the rear end of the pre-cage (11) from interference with the assemblies which position, attach and advance the stirrups (12).

Ansprüche

1. Vorrichtung zum Fertigstellen von Bewehrungskörben, die dazu dient, eine gewünschte Anzahl von Längsstäben (13) innerhalb des Umfangs von Bügeln (12) eines Vorkorbs (11) einzusetzen, während der Vorkorb (11) gebildet wird, wobei die Vorrichtung mindestens eine Tragebene aufweist, in welcher der Vorkorb (11) dazu veranlaßt wird, progressiv vorzurücken, und in welcher die einzusetzenden Stäbe (13) angeordnet werden können,
wobei die Vorrichtung dadurch gekennzeichnet ist,
daß sie folgendes aufweist:

Hebeeinrichtungen (32), die in Abständen entlang der Tragebene (24) getrennt und imstande sind, eine erste, niedrige Position ("I"), die unterhalb der Ebene (24) liegt, und eine zweite, hohe Position ("II") einzunehmen, in der sie imstande sind, die Stäbe (13) über den unteren Rand der Bügel (12) zu heben, und ein feststehendes Widerlagerelement (39), an dem die Vorderenden der Stäbe (13) anliegen können,

und daß die Tragebene (24) imstande ist, sich gemeinsam mit dem Vorkorb (11) aus einer ersten Position ("A") in eine zweite Position ("B") vorwärtszubewegen, wobei die Hebeeinrichtungen in der hohen Position ("II") sind, um die von dem Element (39) gehaltenen Stäbe (13) fortschreitend in den Umfang der Bügel (12) einzusetzen, und sich dann bei stationärem Vorkorb (11) und bei sich in der niedrigen Position ("I") befindlichen Hebeeinrichtungen (32) aus der zweiten Position ("B") in der erste Position ("A") zu bewegen, um in die Zyklusstartposition zurückzukehren.

2. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Position des Widerlagerelements (39) in Längsrichtung entlang der Tragebene (24) eingestellt werden kann.

3. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Bewegungsstrecke der Tragebene (24) von der ersten Position ("A") zu der zweiten Position ("B") mit der Zwischenachse ("i") zwischen den Bügeln (12) des Vorkorbs (11) übereinstimmt.

4. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Hebeeinrichtungen Arme (32) aufweisen, die in bezug auf die Tragebene (24) quer angeordnet und im Inneren von Kammern (33) untergebracht sind, die in Längsrichtung entlang der Ebene (24) getrennt sind.

5. Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß die Arme (32) einer Einrichtung (34) zugeordnet sind, die in beiden Richtungen drehbar ist und imstande ist, zu bewirken, daß die Arme (32) zwischen der ersten, niedrigen Position ("I") und der zweiten, hohen Position ("II"), und umgekehrt, schwingen.

6. Vorrichtung nach Anspruch 5,
dadurch gekennzeichnet,
daß die Arme (32) imstande sind, eine dritte Position ("III") einzunehmen, die in bezug auf die Tragebene (24) weiter angehoben ist und in der sie imstande sind, die Abgabe des Vorkorbs (11) aus der Ebene (24) auf die eine Seite zu bestimmen.

7. Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß die Arme (32) einem Verbindungsbalken (38) zugeordnet sind, der imstande ist, sich vertikal zu bewegen, um sie zumindest aus der ersten, niedrigen Position ("I") in die zweite, hohe Position ("II") zu bringen und umgekehrt.

8. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Tragebene (24) zumindest einer relativen feststehenden Basis (25) zugeordnet ist, in bezug auf welche sie in Längsrichtung bewegbar ist.

9. Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet,
daß sie eine Motoreinrichtung (27) aufweist, die imstande ist, zumindest auf ein Ritzel (28) einzuwirken, das mit einer Zahnstangeneinrichtung (29) in Eingriff ist, um die Tragebene (24) in bezug auf die Basis (25) zu bewegen.

10. Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet,
daß die Tragebene (24) mit Gleiteinrichtungen (30) versehen ist, die imstande sind, sich innerhalb von dazugehörigen Führungen (31) zu bewegen, die der Basis (25) zugeordnet sind.

11. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß sie eine Befehls- und Steuereinheit aufweist, die imstande ist, den Bewegungszyklus der Tragebene (24) und der Hebeeinrichtungen (32) zu regeln und zu steuern.

12. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei die Vorrichtung an der stromabwärtigen Seite einer Korbbildungsmaschine (15) angeordnet ist, die eine Ebene ("Y") zur Positionierung der Bügel (12) definiert, um sie an entsprechenden Längsverbindungsprofilen (14) anzubringen,
dadurch gekennzeichnet,
daß in der ersten Position ("A") der Tragebene (24) die Hebeeinrichtungen (32), die der Korbbildungsmaschine (15) am nächsten liegen, in einem Abstand ("e") von der Ebene ("Y") angeordnet ist, der im wesentlichen gleich der Summe aus der Zwischenachse ("i") zwischen den Bügeln (12) und einem zusätzlichen Wert ("x") ist: ("e"="i"+"x").

13. Verfahren zum Fertigstellen von Bewehrungskörben, das dazu dient, eine gewünschte Anzahl von Längsstäben (13) innerhalb des Umfangs von Bügeln (12) eines Vorkorbs (11) einzusetzen, während der Vorkorb (11) selbst gebildet wird,
   wobei das Verfahren die folgenden Schritte aufweist:

- die Längsstäbe (13) werden in einer Tragebene (24) positioniert, wobei die jeweiligen Vorderenden in Anlage an einem feststehenden Widerlagerelement (39) angeordnet werden;

- zumindest ein erster Bügel (12) wird entsprechend einer Arbeitsebene ("Y") positioniert, und mindestens ein Zusatz-Längsprofil (14) wird an dem Bügel (12) angebracht;

- der Bügel (12) und das mindestens eine Zusatzprofil (14) werden vorwärts zugeführt;

- ein weiterer Bügel (12) wird entsprechend der Arbeitsebene ("Y") positioniert, und der Zyklus wird wiederholt,

wobei das Verfahren dadurch gekennzeichnet ist,
daß es für jeden Zyklus zum Positionieren, Anbringen und Zuführen jedes neuen Bügels (12) folgendes vorsieht: einen ersten Schritt, in dem die Tragebene (24) in Koordination mit dem mindestens einen Bügel (12) vorrückt, und einen zweiten Schritt, in dem die Tragebene (24) zurückweicht, wobei der mindestens eine Bügel (12) stationär ist, wobei in dem ersten Schritt des Vorrückens, in dem die Tragebene (24) in Vorwärtsrichtung zugeführt wird, die Hebeeinrichtungen (32) aktiviert werden, in Abständen entlang der Tragebene getrennt angeordnet werden und imstande sind, die von dem Widerlagerelement (39) stationär gehaltenen Stäbe (13) angehoben zu halten, um es zu ermöglichen, daß die Stäbe (13) innerhalb des Umfangs der Bügel (12) eingesetzt werden, und wobei in dem zweiten Schritt, in dem die Tragebene (24) zurückweicht, die Hebeeinrichtungen (32) gesenkt werden, um es zu ermöglichen, daß sie unterhalb der Bügel (12) passieren.

14. Verfahren nach Anspruch 13,
dadurch gekennzeichnet,
daß es vorsieht, daß die Tragebene (24) um eine Bewegungsstrecke ("c") bewegt wird, die mit der Zwischenachse zwischen den Bügeln (12) des Vorkorbs (11) übereinstimmt.

15. Verfahren nach Anspruch 13 oder 14,
dadurch gekennzeichnet,
daß es dann, wenn der Vorkorb (11) fertiggestellt ist, zumindest einen Schritt vorsieht, um den Vorkorb (11) aus der Tragebene (24) seitlich abzugeben, indem die Hebeeinrichtungen in eine dritte Position ("III") gebracht werden, die in bezug auf die Tragebene (24) weiter angehoben ist.

16. Verfahren nach Anspruch 15,
dadurch gekennzeichnet,
daß es vor dem Schritt des seitlichen Abgebens folgendes vorsieht: Vorrücken der Tragebene (24), um das hintere Ende des Vorkorbs (11) von einer Beeinträchtigung durch die Anordnungen zu befreien, welche die Bügel (12) positionieren, anbringen und vorrücken.

Revendications

1. Dispositif de construction de cages d'armature, utilisé pour insérer un nombre souhaité de tiges longitudinales (13) à l'intérieur du périmètre des étriers (12) d'une précage (11) tandis que la précage est en train d'être formée, ledit dispositif comprenant au moins un plan de support sur lequel on fait progressivement avancer la précage (11) et sur lequel lesdites tiges (13) devant être insérées peuvent être agencées, le dispositif étant caractérisé en ce qu'il comprend des moyens de levage (32) séparés par des intervalles le long dudit plan de support (24) et pouvant assumer une première position basse (« I ») située en dessous dudit plan (24) et une deuxième position haute (« II ») dans lesquelles ils peuvent lever lesdites tiges (13) au-dessus du bord inférieur desdits étriers (12), et un élément de butée fixe (39) contre lequel les extrémités avant desdites tiges (13) peuvent buter, et en ce que ledit plan de support (24) peut se déplacer vers l'avant, avec la précage (11), depuis une première position (« A ») vers une deuxième position (« B »), lesdits moyens de levage étant dans la position haute (« II »), pour insérer progressivement les tiges (13), maintenues par l'élément (39), dans le périmètre des étriers (12) et ensuite, ladite précage (11) étant stationnaire et lesdits moyens de levage (32) étant dans la position basse (« I »), de ladite deuxième position (« B ») vers ladite première position (« A »), pour retourner dans la position de début de cycle.

2. Dispositif selon la revendication 1, caractérisé en ce que la position dudit élément de butée (39) peut être réglée dans le sens de la longueur le long dudit plan de support (24).

3. Dispositif selon la revendication 1, caractérisé en ce que la course dudit plan de support (24) depuis ladite première position (« A ») vers ladite deuxième position (« B ») correspond à l'entraxe (« i ») entre les étriers (12) de la précage (11).

4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdits moyens de levage comprennent des bras (32) agencés de manière transversale par rapport audit plan de support (24) et abrités à l'intérieur de compartiments (33) séparés dans le sens de la longueur le long dudit plan (24).

5. Dispositif selon la revendication 4, caractérisé en ce que lesdits bras (32) sont associés à des moyens (34) tournant dans les deux directions et peuvant provoquer l'oscillation desdits bras (32) entre ladite première position basse (« I ») et ladite deuxième position haute (« II ») et inversement.

6. Dispositif selon la revendication 5, caractérisé en ce que lesdits bras (32) peuvent assumer une troisième position (« III ») plus élevée par rapport audit plan de support (24) dans laquelle ils peuvent déterminer le déchargement de la précage (11) à partir dudit plan (24) sur un côté.

7. Dispositif selon la revendication 4, caractérisé en ce que lesdits bras (32) sont associés à une poutre de raccord (38) pouvant se déplacer verticalement pour les amener au moins de la première position basse (« I ») vers ladite deuxième position haute (« II ») et inversement.

8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit plan de support (24) est associé à au moins une base fixe relative (25) par rapport à laquelle il est mobile dans le sens de la longueur.

9. Dispositif selon la revendication 8, caractérisé en ce qu'il comprend un moyen motorisé (27) pouvant agir sur au moins un pignon (28) engagé sur un moyen à crémaillère (29) pour déplacer ledit plan de support (24) par rapport à ladite base (25).

10. Dispositif selon la revendication 8, caractérisé en ce que ledit plan de support (24) est muni d'un moyen coulissant (30) pouvant se déplacer à l'intérieur de guides complémentaires (31) associés à ladite base (25).

11. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend une unité de commande et de contrôle pouvant gouverner et commander le cycle de déplacement dudit plan de support (24) et desdits moyens de levage (32).

12. Dispositif selon l'une quelconque des revendications précédentes, dans lequel ledit dispositif est situé en aval d'une machine de formage de cages (15) définissant un plan (« Y ») permettant de positionner les étriers (12) pour les fixer à des profilés de raccord longitudinaux relatifs (14), caractérisé en ce que, dans la première position (« A ») dudit plan de support (24), le moyen de levage (32) le plus proche de la machine de formage de cages (15) est situé à une distance (« e ») dudit plan (« Y ») sensiblement égale à la somme des entraxes (« i ») entre les étriers (12) et d'une valeur supplémentaire (« x ») : (« e » = « i » + « x »).

13. Procédé de construction de cages d'armature, utilisé pour insérer un nombre souhaité de tiges longitudinales (13) à l'intérieur du périmètre des étriers (12) d'une précage (11) tandis que la précage (11) elle-même est en train d'être formée, le procédé fournissant les étapes suivantes :

- lesdites tiges longitudinales (13) sont positionnées sur un plan de support (24), les extrémités avant respectives étant agencées contre un élément de butée fixe (39) ;

- au moins un premier étrier (12) est positionné en correspondance avec un plan de travail (« Y »), et au moins un profilé longitudinal auxiliaire (14) est fixé audit étrier (12) ;

- ledit étrier (12) et ledit au moins un profilé auxiliaire (14) sont alimentés vers l'avant ;

- un nouvel étrier (12) est positionné en correspondance avec le plan de travail (« Y ») et le cycle se répète,

le procédé étant caractérisé en ce que
pour chaque cycle de positionnement, de fixation et d'alimentation de chaque nouvel étrier (12), il fournit une première étape dans laquelle ledit plan de support (24) avance en coordination avec ledit au moins un étrier (12), et une deuxième étape dans laquelle ledit plan de support (24) se retire avec au moins un étrier (12) stationnaire, dans ladite première étape d'avance, dans laquelle le plan de support (24) est alimenté vers l'avant, les moyens de levage (32) étant activés, agencés et séparés par des intervalles le long dudit plan de support (24) et pouvant maintenir lesdites tiges (13) relevées, maintenues dans un état stationnaire par l'élément de butée (39), pour permettre auxdites tiges (13) d'être insérées à l'intérieur du périmètre desdits étriers (12), et dans ladite deuxième étape, dans laquelle le plan de support (24) se retire, lesdits moyens de levage (32) étant abaissés pour leur permettre de passer sous lesdits étriers (12).

14. Procédé selon la revendication 13, caractérisé en ce qu'il fournit le déplacement dudit plan de support (24) pour une course (« c ») correspondant à l'entraxe entre les étriers (12) de la précage (11).

15. Procédé selon la revendication 13 ou 14, caractérisé en ce qu'il fournit, lorsque la précage (11) est construite, au moins une étape pour décharger latéralement ladite précage (11) du plan de support (24) en amenant les moyens de levage (32) vers une troisième position (« III ») relevée supérieure par rapport audit plan de support (24).

16. Procédé selon la revendication 15, caractérisé en ce qu'il fournit, avant l'étape de déchargement latéral, l'avance du plan de support (24) pour libérer l'extrémité arrière de la précage (11) de perturbations avec les ensembles qui positionnent, fixent et font avancer les étriers (12).

Drawing