NOZZLE MECHANISM AND DIE CASTING MACHINE HAVING THE SAME

Description

[0001] The disclosure relates to a nozzle mechanism, and more particularly to a nozzle mechanism of a die casting machine.

[0002] US 4,739,933 shows a spray system including a nozzle unit composed of a pair of plates facing each other, plural spraying nozzles provided on the plates and a distribution manifold having plural chambers.

[0003] As shown in Figures 1 and 2, a nozzle mechanism 1 of a conventional die casting machine includes a main body 11, four dispensers 12, a cap board 13 and a plurality of nozzles 14. The main body 11 has two elongated tanks 111, and an air tank 112 disposed between the elongated tanks 111. Each of the elongated tanks 111 has two ends, each of which is connected to a respective one of the dispensers 12, so that atomized working liquid can be emptied into the elongated tanks 111 by the dispensers 12. The cap board 13 is disposed over the main body 11 to seal the elongated tanks 111 and the air tank 112. The nozzles 14 are connected to the cap board 13, and communicate with the elongated tanks 111 and the air tank 112, so that the atomized working liquid retained in the elongated tanks 111 and high pressure air retained in the air tank 112 can be sprayed out through the nozzles 14.

[0004] A distal end of each of the nozzles 14 may be bent as needed. Accordingly, when a certain area of a mould is required to be sprayed with the high pressure air, at least one of the nozzles 14 which communicates with the air tank 112 will be bent to a corresponding position, and when another certain area of the mould is required to be sprayed with the atomized working liquid, at least one of the nozzles 14 which communicates with the elongated tanks 111 will be bent to a corresponding position. In such manner, the nozzle mechanism 1 would need to be replaced and recalibrated frequently, resulting in a relatively high-cost and complicated die casting process.

[0005] Therefore, an object of the disclosure is to provide a nozzle mechanism that can alleviate the drawback associated with the abovementioned prior art.

[0006] According to the disclosure, the nozzle mechanism is adapted to be connected to a driving arm mounted to a machine frame of a die casting machine. The machine frame is mounted with a core plate and a cavity plate that are movable relative to each other. The nozzle mechanism includes a main body, a plurality of dispensers and a plurality of spray tube units. The main body has two receiving chamber units formed therein. Each of the receiving chamber units has a plurality of receiving chambers arranged in a longitudinal direction and isolated from each other. The receiving chamber units are formed respectively in opposite end portions of the main body in a transverse direction transverse to the longitudinal direction. The dispensers are mounted to the main body and are adapted for atomizing a working liquid. Each of the dispensers has a spray opening communicating with a respective one of the receiving chambers for permitting passage of the atomized working liquid therethrough into the respective one of said receiving chambers. The spray tube units are mounted to the main body. Each of the spray tube units includes at least one spray tube communicating with a respective one of the receiving chambers. The nozzle mechanism is adapted to be movable to a location between the core plate and the cavity plate so that at least one of the spray tube units is operable to spray the atomized working liquid to the core plate and the cavity plate via a respective one of the dispensers.

[0007] Another object of the disclosure is to provide a die casting machine that has the abovementioned nozzle mechanism, in which replacement of the abovementioned nozzle mechanism is not required.

[0008] According to the disclosure, the die casting machine includes a machine body and the abovementioned nozzle mechanism. The machine body includes a machine frame, a driving arm mounted to the machine frame, and a core plate and a cavity plate mounted to the machine frame and movable relative to each other. The nozzle mechanism is mounted to the driving arm and is driven movably by the driving arm.

[0009] Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiment with reference to the accompanying drawings, of which:

Figure 1 is a partly exploded perspective view of a nozzle mechanism of a conventional die casting machine;

Figure 2 is a fragmentary side view of the conventional die casting machine;

Figure 3 is a perspective view of an embodiment of a die casting machine according to the disclosure;

Figure 4 is a side view of the embodiment;

Figure 5 is a perspective view of a nozzle mechanism of the embodiment;

Figure 6 is a fragmentary partly exploded perspective of the nozzle mechanism of the embodiment;

Figure 7 is a sectional view taken along line VII-VII in Figure 5;

Figure 8 is a front view of the nozzle mechanism of the embodiment;

Figure 9 is a side view of the nozzle mechanism of the embodiment;

Figure 10 is a perspective view of a dispenser of the nozzle mechanism of the embodiment;

Figure 11 is a sectional view taken along line XI-XI in Figure 10; and

Figure 12 is a sectional view taken along line XII-XII in Figure 10.

[0010] Referring to Figures 3 and 4, the embodiment of a die casting machine includes a machine body 2 and a nozzle mechanism 3.

[0011] The machine body 2 includes a machine frame 21, a driving device 22, a driving arm 23 and a mould 24. The machine frame 21 includes a frame seat 211, two spaced-apart base seats 212, four spaced-apart supporting shafts 213, a sliding seat 214 and a side seat 215. Each of the base seats 212 has a rectangular cross section, has four engaging segments 216 respectively formed at four corners thereof, and is perpendicular to the frame seat 211. Each of the supporting shafts 213 has two opposite end portions respectively connected to the base seats 212, and each of the end portions of the supporting shafts 213 engages a respective one of the engaging segments 216 of the base seats 212. The sliding seat 214 has a rectangular cross section, and has four sliding segments 217 formed at four corners thereof. Each of the sliding segments 217 is slidably connected to a respective one of the supporting shafts 213. The side seat 215 is mounted to one of the base seats 212.

[0012] The driving device 22 is mounted to the side seat 215 of the machine frame 21, and has a driver 221 and a driving rod 222. The driving rod 222 has two end sections . One of the end sections is connected to the driver 221, and the other one of the end sections is movably mounted to the one of the base seats 212.

[0013] The driving arm 23 is mounted to the side seat 215 of the machine frame 21. In this embodiment, the driving arm 23 could be a conventional robotic arm, such as a Cartesian robot, a SCARA robot or an articulated robot.

[0014] The mould 24 is mounted to the machine frame 21, and has a core plate 241 and a cavity plate 242 movable relative to each other. The core plate 241 is mounted to the sliding seat 214, and the cavity plate 242 is mounted to the one of the base seats 212 and is opposite to the core plate 241. The cavity plate 242 is connected to the driving rod 222 of the driving device 22, such that the cavity plate 242 is driven by the driving rod 222 so as to be movable relative to the core plate 241.

[0015] As shown in Figures 4 and 5, the nozzle mechanism 3 is connected to the driving arm 23, and is movably driven by the driving arm 23. The nozzle mechanism 3 includes a main body 4, a plurality of dispensers 5, a plurality of spray tube units 6, two supporting frames 7 (see Figure 9), two air tube units 8 and a control unit 9. The nozzle mechanism 3 is movable to a location between the core plate 241 and the cavity plate 242, so that the spray tube units 6 are operable to spray an atomized working liquid to the core plate 241 and the cavity plate 242 via the dispensers 5.

[0016] As shown in Figures 5 to 7, and 9, the main body 4 has a top seat 41, two receiving chamber units 42 formed in the top seat 41, a bottom seat 43 and an air channel 44.

[0017] The top seat 41 has two inverted T-shaped frames 411, two side boards 412, a top board 413 and a top pillar 410. The inverted T-shaped frames 411 are spaced apart from each other in a longitudinal direction (L), and cooperatively define two receiving spaces 414 extending in the longitudinal direction (L) and spaced apart from each other in a transverse direction (T) that is transverse to the longitudinal direction (L). The side boards 412 extend in the longitudinal direction (L) and are respectively disposed in the receiving spaces 414. The top board 413 is disposed over the side boards 412 and cooperates with the inverted T-shaped frames 411 to securely clamp the side boards 412 therebetween. The top pillar 410 is mounted on the top board 413 and is connected to the driving arm 23.

[0018] The receiving chamber units 42 are formed respectively in opposite end portions of the top seat 41 of the main body 4 in the transverse direction (T) . Each of the receiving chamber units 42 has a plurality of receiving chambers 421 arranged in the longitudinal direction (L) and isolated from each other. In this embodiment, each of the receiving chambers 421 has two chamber parts. One of the chamber parts extends through the top board 413 and the other one of the chamber parts is formed in a corresponding one of the side boards 412.

[0019] The top seat 41 further has a plurality of turbulence plates 415, each of which has a plurality of through holes 416 and is disposed in a respective one of the receiving chambers 421. A diameter of each of the through holes 416 is ranged between 0.5 to 5 millimeters. In this embodiment, the diameter of each of the through holes 416 is 2 millimeters.

[0020] As shown in Figures 8 and 9, the bottom seat 43 is disposed under the top seat 41, and has a central pillar 431 mounted between the side boards 412, an air tube frame 432 mounted to a bottom end portion of the central pillar 431 and extending in the longitudinal direction (L), and two extending frames 433 disposed under the air tube frame 432 and spaced apart from each other in the longitudinal direction (L).

[0021] As shown in Figure 9, the air channel 44 is formed in the main body 4, extends downwardly from the top pillar 410 of the top seat 41 through a central portion of the top board 413 and the central pillar 431 of the bottom seat 43, and communicates with an air tank 441 formed inside the air tube frame 432 of the bottom seat 43. The air channel 44 communicates with the air tube units 8 and is adapted for introducing ambient air into the air tube units 8.

[0022] As shown in Figures 7 and 10, the dispensers 5 are mounted to the main body 4, are adapted for atomizing a working liquid, and are respectively connected to the receiving chambers 421. In this embodiment, each of the dispensers 5 is adapted to introduce and atomize two types of the working liquid, so the atomized working liquid can then be delivered into a respective one of the receiving chambers 421. The two types of the working liquid may respectively be a release agent or water. Each of the dispensers 5 has a dispenser body 52, two valve members 53 and two regulating members 54.

[0023] As shown in Figures 7, 11 and 12, the dispenser body 52 has a mixing chamber 521, an extending portion 522, a spreading portion 523, two fluid passages 524, an air passage 525 and two valve chambers 527. The mixing chamber 521 is formed in the dispenser body 52 and has a spray opening 526 communicating with the respective one of the receiving chambers 421 for permitting passage of the atomized working liquid therethrough into the respective one of said receiving chambers 421. The extending portion 522 is disposed in the mixing chamber 521. The spreading portion 523 extends from the extending portion 522 and outwardly of the spray opening 526, has a distal end section being plate-shaped, being spaced apart from the spray opening 526, and being received in the respective one of the receiving chambers 421. In such manner, the atomized working liquid would hit the spreading portion 523 and would be received in the respective one of the receiving chambers 421 to be well-mixed.

[0024] As shown in Figure 11, the fluid passages 524 are formed in the dispenser body 52 and are adapted to be respectively connected to two different types of working liquid source for respectively introducing the two types of the working liquid into the mixing chamber 521. One of the fluid passages 524 is formed in the extending portion 522 and communicates with the mixing chamber 521, so that one of the two types of the working liquid can flow along a first path (I) into the mixing chamber 521. The other one of the fluid passages 524 is formed in the dispenser body 52 and communicates with the mixing chamber 521, so that the other one of the two types of the working liquid can flow along a second path (II) into the mixing chamber 521. The air passage 525 is formed in the dispenser body 52 and communicates with the mixing chamber 521 at a top end portion of the mixing chamber 521 that is opposite to the spray opening 526, so that high pressure air can pass along a third path (III) into the mixing chamber 521. In this embodiment, the working liquid that flows along the first path (I) is a release agent, and the working liquid that flows along the second path (II) is water. In such manner, the high pressure air that passes along the third path (III) can atomize the two types of the working liquid in the mixing chamber 521, and spray the two types of the working liquid outwardly from the spray opening 526. The ratio of the release agent and the water forming the working liquid may be adjusted as required.

[0025] The valve members 53 are respectively disposed in the valve chambers 527 of the dispenser body 52. One of the valve members 53 is operable to open and close a respective one of the fluid passages 524, and the other one of the valve members 53 is operable to open and close the other one of the fluid passages 524. Each of the valve members 53 includes a top cover 531 fixedly mounted to a top end of a respective one of the valve chambers 527 and sealing the respective one of the valve chambers 527, and a movable bottom valve 532. For each of the valve members 53, when air flows into a first space defined between the top cover 531 and the bottom valve 532, the bottom valve 532 would be pushed away from the top cover 531 to close the respective one of the fluid passages 524, and when air flows into a second space defined between the bottom valve 532 and the respective one of the valve chambers 527, the bottom valve 532 would be pushed toward the top cover 531 to open the respective one of the fluid passages 524. It should be noted that, the valve members 53 may be other conventional valve units in other embodiments.

[0026] Each of the regulating members 54 extends threadedly into the dispenser body 52, and can be rotated to block and unblock a respective one of the fluid passages 524 to control an amount of a respective one of the two types of the working liquid input into the respective one of the fluid passages 524.

[0027] As shown in Figures 6 to 8, the spray tube units 6 are mounted to the main body 4. In this embodiment, each of the spray tube units 6 includes seven spray tubes 61 that communicate with a respective one of the receiving chambers 421. Each of the spray tubes 61 has a connecting portion 611 and a bent portion 612 bent outwardly. The connecting portion 611 of each of the spray tubes 61 is mounted to a corresponding one of the side boards 412 of the main body 4, and the bent portions 612 of the spray tubes 61 of each of the spray tube units 6 are spaced apart from each other. The top seat 41 of the main body 4 further has a plurality of protrusions 417 formed in the receiving chambers 421 and corresponding respectively in position to the connecting portions 611 of the spray tubes 61. A height of each of the protrusions 417 is ranged between 0.3 to 3 millimeters. In this embodiment, the height of each of the protrusions 417 is 1 millimeter.

[0028] As shown in Figures 8 and 9, the supporting frames 7 extend in the longitudinal direction (L), are disposed under the top seat 41, are spaced apart from each other in the transverse direction (T), and are disposed for installation of the spray tube units 6 thereto to securely fix the spray tubes 61.

[0029] The air tube units 8 are respectively mounted to two opposite end portions of the bottom seat 43 of the main body 4 in the transverse direction (T), and communicate with the air tank 441. Each of the air tube units 8 includes a plurality of straight air tubes 81 mounted to the air tube frame 432, and a plurality of curved air tubes 82 mounted to the extending frame 433. The straight air tubes 81 and the curved air tubes 82 are adapted for jetting out the air which comes from the air channel 44 to the core plate 241 and the cavity plate 242 once the nozzle mechanism 3 is moved to the location between the core plate 241 and the cavity plate 242.

[0030] As shown in Figure 4, the control unit 9 is connected to the dispensers 5 and is adapted for controlling the operation of each of the dispensers 5. In this embodiment, the operation of each of the dispensers 5 is controlled by introducing air into the first and second spaces defined in the valve chambers 527 to open or close a desired one of the fluid passages 524 (see Figure 11) . The valve members 53 are solenoid valves (not shown) . In such manner, a user could set the operating parameters in advance, so that desired ones of the dispensers 5 can be actuated in order, and the mould 24 can be consequently sprayed with the water to cool down and then sprayed with the release agent so the user can proceed to the next die casting process.

[0031] As shown in Figures 4 and 9, during operation, when a die casting process is completed, the core plate 241 and the cavity plate 242 of the mould 24 are separated, and a produced blank (not shown) is then removed from the mould 24. Next, the driving arm 23 is driven by the control unit 9 to drive the nozzle mechanism 3 to the place between the core plate 241 and the cavity plate 242, the air tube units 8 then spray the air to clean burrs clinging to the mould 24. Afterward, the spray tube units 6 are adjusted to a place corresponding in position to a certain area of the mould 24 which is required to be sprayed with the working liquid, and the working liquid is then introduced into a respective one of the dispensers 5 to be atomized. Then, the water is sprayed out to cool down the mould 24, and a release agent liquid (a mixture of the water and the release agent) is then sprayed onto the mould 24. Finally, the air tube units 8 are driven to blow the air to cool down the release agent liquid for the next die casting process.

[0032] If the mould 24 size needs to be changed, the user only needs to adjust the position of the nozzle mechanism 3, so that replacement of the entire nozzle mechanism 3 is not required.

[0033] It should be noted that, each of the dispensers 5 may be configured to atomize and spray out only one type of the working liquid. Since the receiving chambers 421 are isolated, some of the dispensers 5 can be connected to a water source and actuated first, and the remaining of the dispensers 5 can be connected to a release agent source and actuated later. In such manner, the same effectiveness of the die casting process can be achieved.

[0034] With the abovementioned configuration, the die casting machine of the disclosure has the following advantages:

1. The nozzle mechanism 3 can be adjusted for various working areas of moulds with different sizes, and the replacement thereof is not required, so high costs associated with die casting process can be avoided.

2. With the spaced-apart bent portions 612 of the spray tube units 6, the working liquid can be evenly sprayed out, and a spraying efficiency is increased.

3. Since different types of the working liquid can be selected to be sprayed out from the nozzle mechanism 3, time for the mould 24 to cool down and the amount of release agent used can be reduced.

4. The same effectiveness of the die casting process can be assured when each of the dispensers 5 only atomizes and sprays out one type of the working liquid.

5. The atomized working liquid can be well-mixed after hitting the spreading portions 523 of the dispensers 5 and being received in the receiving chambers 421.

6. The turbulence plates 415 can allow the atomized working liquid that is received in the receiving chambers 421 to be further mixed. In addition, the turbulence plates 415 can allow the atomized working liquid to be evenly received in the receiving chambers 421, so that the spray tubes 61 may have equal flow rates.

7. With the design of the protrusions 417, turbulent flows may be created in the receiving chambers 421 near the spray tubes 61. In such manner, the atomized working liquid can be further mixed.

8. The nozzle mechanism 3 can be moved by the driving arm 23 relative to the mould 24 to thoroughly clean the mould 24.

9. By virtue of the straight air tubes 81 and the curved air tubes 82, the air tube unit 8 can spray in different angles, thereby increasing the burr-cleaning efficiency.

[0035] In the description above, for the purposes of explanation, numerous specific details have been set forth in order to provide a thorough understanding of the embodiment. It will be apparent, however, to one skilled in the art, that one or more other embodiments may be practiced without some of these specific details. It should also be appreciated that reference throughout this specification to "one embodiment," "an embodiment," an embodiment with an indication of an ordinal number and so forth means that a particular feature, structure, or characteristic may be included in the practice of the disclosure. It should be further appreciated that in the description, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of various inventive aspects.

Claims

1. A nozzle mechanism (3) adapted to be connected to a driving arm (23) that is mounted to a machine frame (21) of a die casting machine, the machine frame (21) being mounted with a core plate (241) and a cavity plate (242) that are movable relative to each other, saidnozzle mechanism (3) characterized by:

a main body (4) having two receiving chamber units (42) that are formed therein, each of said receiving chamber units (42) having a plurality of receiving chambers (421) that are arranged in a longitudinal direction (L) and that are isolated from each other, said receiving chamber units (42) being formed respectively in opposite end portions of said main body (4) in a transverse direction (T) that is transverse to the longitudinal direction (L);

a plurality of dispensers (5) mounted to said main body (4) and adapted for atomizing a working liquid, each of said dispensers (5) having a spray opening (526) that communicates with a respective one of said receiving chambers (421) for permitting passage of the atomized working liquid therethrough into the respective one of said receiving chambers(421); and

a plurality of spray tube units (6) mounted to said main body (4), each of said spray tube units (6) including at least one spray tube (61) that communicates with a respective one of said receiving chambers(421);

wherein said nozzle mechanism (3) is adapted to be movable to a location between the core plate (241) and the cavity plate (242) so that at least one of said spray tube units (6) is operable to spray the atomized working liquid to the core plate (241) and the cavity plate (242) via a respective one of said dispensers (5).

2. The nozzle mechanism as claimed in Claim 1, further characterized by a control unit (9) connected to said dispensers (5) and adapted for controlling the operation of each of said dispensers (5).

3. The nozzle mechanism as claimed in Claim 1, characterized in that each of said spray tube units (6) includes a plurality of said spray tubes (61), each of which has a bent portion (612) bent outwardly, said bent portions (612) of said spray tubes (61) of each of said spray tube units (6) being spaced apart from each other.

4. The nozzle mechanism as claimed in any one of Claims 1 to 3, characterized in that each of said dispensers (5) has two fluid passages (524) that are adapted to be respectively connected to two different types of working liquid source, and two valve members (53), one of said valve members (53) being operable to open and close a respective one of said fluid passages (524), the other one of said valve members (53) being operable to open and close the other one of said fluid passages (524) .

5. The nozzle mechanism as claimed in Claim 4, further characterized in that each of said dispensers (5) has an extending portion (522), and a spreading portion (523) extending from said extending portion (522) and outwardly of said spray opening (526), having a distal end section that is plate-shaped, and received in the respective one of said receiving chambers (421) of said receiving chamber units (42).

6. The nozzle mechanism as claimed in any one of Claims 1 to 3, further characterized by two air tube units (8) respectively mounted to said two opposite end portions of said main body (4) in the transverse direction (T) and adapted for jetting out air to the core plate (241) and the cavity plate (242) when said nozzle mechanism (3) is moved to the location between the core plate (241) and the cavity plate (242).

7. The nozzle mechanism as claimed in Claim 6, characterized in that said main body (4) further has a top seat (41) formed with said receiving chamber units (42), and a bottom seat (43) disposed under said top seat (41) and mounted with said air tube units (8).

8. The nozzle mechanism as claimed in Claim 7, further characterized in that said top seat (41) has:

two inverted T-shaped frames (411) spaced apart from each other in the longitudinal direction (L), and cooperatively defining two receiving spaces (414) that extend in the longitudinal direction (L) and spaced apart from each other in the transverse direction (T);

two side boards (412) extending in the longitudinal direction (L) and respectively disposed in said receiving spaces (414);

a top board (413) disposed over said side boards (412) and cooperating with said inverted T-shaped frames (411) to securely clamp said side boards (412) therebetween; and

a top pillar (410) mounted on said top board (413) and connected to the driving arm (23).

9. The nozzle mechanism as claimed in Claim 7, further characterized in that said bottom seat (43) has an air tube frame (432), and an extending frame (433) disposed under said air tube frame (432), each of said air tube units (8) including a plurality of straight air tubes (81) that are mounted to said air tube frame (432), and a plurality of curved air tubes (82) that are mounted to said extending frame (433).

10. The nozzle mechanism as claimed in Claim 9, further characterized in that said main body (4) further has an air channel (44) formed therein, extending from said top seat (41) to said bottom seat (43), communicating with said air tube units (8), and adapted for introducing ambient air into said air tube units (8).

11. The nozzle mechanism as claimed in Claim 1, further characterized by two supporting frames (7) extending in the longitudinal direction (L), and disposed for installation of said spray tube units (6) thereto to securely fix said spray tubes (61).

12. The nozzle mechanism as claimed in any one of Claims 1 to 3, characterized in that said main body (4) further has a plurality of turbulence plates (415), each of which has a plurality of through holes (416) and is disposed in a respective one of said receiving chambers (421).

13. The nozzle mechanism as claimed in any one of Claims 1 to 3, characterized in that said main body (4) further has a plurality of protrusions (417) formed in said receiving chambers (421) and corresponding respectively in position to said spray tubes (61).

14. A die casting machine characterized by:

a machine body (2) including a machine frame (21), a driving arm (23) that is mounted to said machine frame (21), and a core plate (241) and a cavity plate (242) that are mounted to said machine frame (21) and that are movable relative to each other; and

a nozzle mechanism (3) as claimed in Claim 1 mounted to said driving arm (23) and being driven movably by said driving arm (23).

Ansprüche

1. Ein Düsenmechanismus (3), der dazu angepasst ist, mit einem Antriebsarm (23), welcher an einen Maschinenrahmen (21) einer Druckgussmaschine montiert ist, verbunden zu sein, wobei der Maschinenrahmen (21) mit einer Kernplatte (241) und einer Hohlraumplatte (242) montiert ist, welche relativ zueinander beweglich sind, wobei der Düsenmechanismus (3) durch folgende Merkmale gekennzeichnet ist:

einen Hauptkörper (4) mit zwei darin gebildeten Aufnahmekammereinheiten (42), wobei jede der Aufnahmekammereinheiten (42) eine Mehrzahl von Aufnahmekammern (421) aufweist, die in einer Längsrichtung (L) angeordnet sind und die voneinander isoliert sind, wobei die Aufnahmekammereinheiten (42) jeweils in gegenüberliegenden Endabschnitten des Hauptkörpers (4) in einer quer zu der Längsrichtung (L) verlaufenden Querrichtung (T) gebildet sind;

eine Mehrzahl von Abgabevorrichtungen (5), die an den Hauptkörper (4) montiert sind und zum Zerstäuben einer Arbeitsflüssigkeit angepasst sind, wobei jede der Abgabevorrichtungen (5) eine Sprühöffnung (526) aufweist, die mit einer jeweiligen der Aufnahmekammern (421) kommuniziert, um einen Durchgang der zerstäubten Arbeitsflüssigkeit dort hindurch in eine jeweilige der Aufnahmekammern (421) zu ermöglichen; und

eine Mehrzahl von Sprührohreinheiten (6), die an den Hauptkörper (4) montiert sind, wobei jede der Sprührohreinheiten (6) zumindest ein Sprührohr (61) umfasst, das mit einer jeweiligen der Aufnahmekammern (421) kommuniziert;

wobei der Düsenmechanismus (3) dazu angepasst ist, zu einer Stelle zwischen der Kernplatte (241) und der Hohlraumplatte (242) beweglich zu sein, so dass zumindest eine der Sprührohreinheiten (6) betriebsfähig ist, die zerstäubte Arbeitsflüssigkeit über eine jeweilige der Abgabevorrichtungen (5) zu der Kernplatte (241) und der Hohlraumplatte (242) zu sprühen.

2. Der Düsenmechanismus gemäß Anspruch 1, der ferner durch eine Steuereinheit (9) gekennzeichnet ist, die mit den Abgabevorrichtungen (5) verbunden ist und zum Steuern des Betriebs jeder der Abgabevorrichtungen (5) angepasst ist.

3. Der Düsenmechanismus gemäß Anspruch 1, der dadurch gekennzeichnet ist, dass jede der Sprührohreinheiten (6) eine Mehrzahl der Sprührohre (61) umfasst, von denen jeder einen nach außen gebogen Abschnitt (612) aufweist, wobei die gebogenen Abschnitte (612) der Sprührohre (61) jeder der Sprührohreinheiten (6) voneinander beabstandet sind.

4. Der Düsenmechanismus gemäß einem der Ansprüche 1 bis 3, der dadurch gekennzeichnet ist, dass jede der Abgabevorrichtungen (5) zwei Fluiddurchgänge (524), die dazu angepasst sind, jeweils mit zwei unterschiedlichen Arten von Arbeitsflüssigkeitsquellen verbunden zu sein, und zwei Ventilbauglieder (53) aufweist, wobei eines der Ventilbauglieder (53) dazu betriebsfähig ist, einen jeweiligen der Fluiddurchgänge (524) zu öffnen und zu schließen, wobei das andere der Ventilbauglieder (53) dazu betriebsfähig ist, den anderen der Fluiddurchgänge (524) zu öffnen und zu schließen.

5. Der Düsenmechanismus gemäß Anspruch 4, der ferner dadurch gekennzeichnet ist, dass jede der Abgabevorrichtungen (5) einen Erstreckungsabschnitt (522) sowie einen Ausdehnungsabschnitt (523) aufweist, welcher sich von dem Erstreckungsabschnitt (522) und nach außen von der Sprühöffnung (526) erstreckt, einen plattenförmigen distalen Endbereich aufweist und in der jeweiligen der Aufnahmekammern (421) der Aufnahmekammereinheiten (42) aufgenommen ist.

6. Der Düsenmechanismus gemäß einem der Ansprüche 1 bis 3, der ferner durch zwei Luftrohreinheiten (8) gekennzeichnet ist, die jeweils an die zwei gegenüberliegenden Endabschnitte des Hauptkörpers (4) in der Querrichtung (T) montiert sind und dazu angepasst sind, Luft zu der Kernplatte (241) und der Hohlraumplatte (242) zu sprühen, wenn der Düsenmechanismus (3) zu der Stelle zwischen der Kernplatte (241) und der Hohlraumplatte (242) bewegt wird.

7. Der Düsenmechanismus gemäß Anspruch 6, der dadurch gekennzeichnet ist, dass der Hauptkörper (4) ferner eine Oberseitenauflage (41), die mit den Aufnahmekammereinheiten (42) gebildet ist, und eine Unterseitenauflage (43) aufweist, die unter der Oberseitenauflage (41) angeordnet ist und mit den Luftrohreinheiten (8) montiert ist.

8. Der Düsenmechanismus gemäß Anspruch 7, der ferner dadurch gekennzeichnet ist, dass die Oberseitenauflage (41) folgende Merkmale aufweist:

zwei umgekehrte T-förmige Rahmen (411), die voneinander in der Längsrichtung (L) beabstandet sind und zusammenwirkend zwei Aufnahmeräume (414) definieren, die sich in der Längsrichtung (L) erstrecken und voneinander in der Querrichtung (T) beabstandet sind;

zwei Seitenwände (412), die sich in der Längsrichtung (L) erstrecken und jeweils in den Aufnahmeräumen (414) angeordnet sind;

eine Oberseitenwand (413), die über den Seitenwänden (412) angeordnet ist und mit den umgekehrten T-förmigen Rahmen (411) zusammenwirkt, um die zwei Seitenwände (412) sicher dazwischen einzuklemmen; und

eine Oberseitensäule (410), die auf die Oberseitenplatte (413) montiert ist und mit dem Antriebsarm (23) verbunden ist.

9. Der Düsenmechanismus gemäß Anspruch 7, der ferner dadurch gekennzeichnet ist, dass die Unterseitenauflage (43) einen Luftrohrrahmen (432) und einen Erstreckungsrahmen (433) aufweist, der unter dem Luftrohrrahmen (432) angeordnet ist, wobei jede der Luftrohreinheiten (8) eine Mehrzahl von geraden Luftrohren (81), die an den Luftrohrrahmen (432) montiert sind, und eine Mehrzahl von gekrümmten Luftrohren (82) umfasst, die an den Erstreckungsrahmen (433) montiert sind.

10. Der Düsenmechanismus gemäß Anspruch 9, der ferner dadurch gekennzeichnet ist, dass der Hauptkörper (4) ferner einen darin gebildeten Luftkanal (44) aufweist, der sich von der Oberseitenauflage (41) zu der Unterseitenauflage (43) erstreckt, mit den Luftrohreinheiten (8) kommuniziert und zum Einführen von Umgebungsluft in die Luftrohreinheiten (8) angepasst ist.

11. Der Düsenmechanismus gemäß Anspruch 1, der ferner durch zwei Stützrahmen (7) gekennzeichnet ist, die sich in der Längsrichtung (L) erstrecken und zum Anbringen der Sprührohreinheiten (6) daran angeordnet sind, um die Sprührohre (61) sicher zu befestigen.

12. Der Düsenmechanismus gemäß einem der Ansprüche 1 bis 3, der dadurch gekennzeichnet ist, dass der Hauptkörper (4) ferner eine Mehrzahl von Turbulenzplatten (415) aufweist, von denen jeder eine Mehrzahl von Durchgangslöchern (416) aufweist und in einer jeweiligen der Aufnahmekammern (421) angeordnet ist.

13. Der Düsenmechanismus gemäß einem der Ansprüche 1 bis 3, der dadurch gekennzeichnet ist, dass der Hauptkörper (4) ferner eine Mehrzahl von Vorsprüngen (417) aufweist, die in den Aufnahmekammern (421) gebildet sind und hinsichtlich ihrer Position jeweils den Sprührohren (61) entsprechen.

14. Eine Druckgussmaschine, die durch folgende Merkmale gekennzeichnet ist:

einen Maschinenkörper (2), der einen Maschinenrahmen (21), einen Antriebsarm (23), der an den Maschinenrahmen (21) montiert ist, sowie eine Kernplatte (241) und eine Hohlraumplatte (242) umfasst, die an den Maschinenrahmen (21) montiert sind und relativ zueinander beweglich sind; und

einen Düsenmechanismus (3) gemäß Anspruch 1, der an den Antriebsarm (23) montiert ist und auf bewegliche Weise durch den Antriebsarm (23) angetrieben wird.

Revendications

1. Mécanisme de buse (3) adapté pour être connecté à un bras d'entraînement (23) qui est monté sur un châssis de machine (21) d'une machine de coulée sous pression, le châssis de machine (21) étant monté avec une plaque de noyau (241) et une plaque à cavité (242) qui sont déplaçables l'une par rapport à l'autre, ledit mécanisme de buse (3) étant caractérisé par:

un corps principal (4) présentant deux unités de chambres de réception (42) qui y sont formées, chacune desdites unités de chambres de réception (42) présentant une pluralité de chambres de réception (421) qui sont disposées dans une direction longitudinale (L) et qui sont isolées l'une de l'autre, lesdites unités de chambres de réception (42) étant formées respectivement dans des parties d'extrémité opposées dudit corps principal (4) dans une direction transversale (T) qui est transversale à la direction longitudinale (L);

une pluralité de distributeurs (5) montés sur ledit corps principal (4) et adaptés pour atomiser un liquide de travail, chacun desdits distributeurs (5) présentant une ouverture de pulvérisation (526) qui communique avec l'une respective desdites chambres de réception (421) pour permettre le passage du liquide de travail atomisé à travers cette dernière vers l'une respective desdites chambres de réception (421); et

une pluralité d'unités de tubes de pulvérisation (6) montées sur ledit corps principal (4), chacune desdites unités de tubes de pulvérisation (6) comportant au moins un tube de pulvérisation (61) qui communique avec l'une respective desdites chambres de réception (421);

dans lequel ledit mécanisme de buse (3) est adapté de manière à être déplaçable vers un emplacement entre la plaque de noyau (241) et la plaque à cavité (242) de sorte qu'au moins l'une desdites unités de tubes de pulvérisation (6) soit opérationnelle pour pulvériser le liquide de travail atomisé sur la plaque de noyau (241) et la plaque à cavité (242) par l'intermédiaire de l'un respectif desdits distributeurs (5).

2. Mécanisme de buse selon la revendication 1, caractérisé par ailleurs par une unité de commande (9) connectée auxdits distributeurs (5) et adaptée pour commander le fonctionnement de chacun desdits distributeurs (5).

3. Mécanisme de buse selon la revendication 1, caractérisé par le fait que chacune desdites unités de tubes de pulvérisation (6) comporte une pluralité desdits tubes de pulvérisation (61) dont chacun présente une partie courbe (612) courbée vers l'extérieur, lesdites parties courbes (612) desdits tubes de pulvérisation (61) de chacune desdites unités de tubes de pulvérisation (6) étant distantes l'une de l'autre.

4. Mécanisme de buse selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que chacun desdits distributeurs (5) présente deux passages de fluide (524) qui sont adaptés pour être connectés respectivement à deux types différents de source de liquide de travail, et deux éléments de soupape (53), l'un desdits éléments de soupape (53) pouvant être actionné pour ouvrir et fermer l'un respectif desdits passages de fluide (524), l'autre desdits éléments de soupape (53) pouvant être actionné pour ouvrir et fermer l'autre desdits passages de fluide (524).

5. Mécanisme de buse selon la revendication 4, caractérisé par ailleurs par le fait que chacun desdits distributeurs (5) présente une partie d'extension (522) et une partie d'épandage (523) s'étendant à partir de ladite partie d'extension (522) et à l'extérieur de ladite ouverture de pulvérisation (526), présentant un segment d'extrémité distale qui est en forme de plaque, et reçue dans l'une respective desdites chambres de réception (421) desdites unités de chambres de réception (42).

6. Mécanisme de buse selon l'une quelconque des revendications 1 à 3, caractérisé par ailleurs par deux unités de tubes à air (8) montées respectivement sur lesdites deux parties d'extrémité opposées dudit corps principal (4) dans la direction transversale (T) et adaptées pour projeter de l'air vers la plaque de noyau (241) et la plaque à cavité (242) lorsque ledit mécanisme de buse (3) est déplacé vers l'emplacement entre la plaque de noyau (241) et la plaque à cavité (242).

7. Mécanisme de buse selon la revendication 6, caractérisé par le fait que ledit corps principal (4) présente par ailleurs un siège supérieur (41) formé avec lesdites unités de chambres de réception (42), et un siège inférieur (43) disposé sous ledit siège supérieur (41) et monté avec lesdites unités de tubes à air (8).

8. Mécanisme de buse selon la revendication 7, caractérisé par ailleurs par le fait que ledit siège supérieur (41) présente:

deux cadres en "T" inversé (411) distants l'un de l'autre dans la direction longitudinale (L), et définissant en coopération deux espaces de réception (414) qui s'étendent dans la direction longitudinale (L) et distants l'un de l'autre dans la direction transversale (T);

deux plaques latérales (412) s'étendant dans la direction longitudinale (L) et disposées respectivement dans lesdits espaces de réception (414);

une plaque supérieure (413) disposée sur lesdites plaques latérales (412) et coopérant avec lesdits cadres en forme de "T" inversé (411) pour serrer solidement lesdites plaques latérales (412) entre ces derniers; et

une colonne supérieure (410) montée sur ladite plaque supérieure (413) et connectée au bras d'entraînement (23).

9. Mécanisme de buse selon la revendication 7, caractérisé par ailleurs par le fait que ledit siège inférieur (43) présente un cadre de tubes à air (432) et un cadre d'extension (433) disposé sous ledit cadre de tubes à air (432), chacune desdites unités de tubes à air (8) comportant une pluralité de tubes à air droits (81) qui sont montés sur ledit cadre de tube à air (432), et une pluralité de tubes à air courbés (82) qui sont montés sur ledit cadre d'extension (433).

10. Mécanisme de buse selon la revendication 9, caractérisé par ailleurs par le fait que ledit corps principal (4) présente par ailleurs un canal à air (44) y formé s'étendant dudit siège supérieur (41) audit siège inférieur (43), communiquant avec lesdites unités de tubes à air (8) et adapté pour introduire de l'air ambiant dans lesdites unités de tubes à air (8).

11. Mécanisme de buse selon la revendication 1, caractérisé par ailleurs par deux cadres de support (7) s'étendant dans la direction longitudinale (L) et disposés de manière à y installer lesdites unités de tubes de pulvérisation (6) pour fixer solidement lesdits tubes de pulvérisation (61).

12. Mécanisme de buse selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que ledit corps principal (4) présente par ailleurs une pluralité de plaques de turbulence (415) dont chacune présente une pluralité de trous traversants (416) et est disposée dans l'une respective desdites chambres de réception (421).

13. Mécanisme de buse selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que ledit corps principal (4) présente par ailleurs une pluralité de saillies (417) formées dans lesdites chambres de réception (421) et correspondant respectivement en position auxdits tubes de pulvérisation (61).

14. Machine de coulée sous pression, caractérisée par:

un corps de machine (2) comportant un châssis de machine (21), un bras d'entraînement (23) qui est monté sur ledit châssis de machine (21), et une plaque de noyau (241) et une plaque à cavité (242) qui sont montées sur ledit châssis de machine (21) et qui sont déplaçables l'une par rapport à l'autre; et

un mécanisme de buse (3) selon la revendication 1 monté sur ledit bras d'entraînement (23) et entraîné de manière déplaçable par ledit bras d'entraînement (23).

Drawing