Rapid die casting equipment for aluminum alloy die castings

Abstract

The invention discloses rapid die casting equipment for aluminum alloy die castings, and relates to the technical field of metal die casting. A first channel is formed in a die plate and an ejector rod, and a spray hole communicating with the first channel is formed in the ejector rod; according to the device, the mold release agent can be sprayed to the relatively-closed die-casting cavity in a mold closing state, the comprehensive uniformity of the mold release agent during adhesion is improved, the demolding effect after a die casting is formed is improved, the mold release agent is sprayed in the relatively-closed die-casting cavity, and the mold release effect is improved. According to the die-casting mold core, the release agent can be prevented from escaping outwards, the surrounding environment can be protected easily, waste of the release agent can be avoided, energy-saving, environment-friendly, green and efficient die-casting production is achieved, meanwhile, the spraying holes are formed in the cylindrical face of the end of the ejector rod, the spraying holes cannot be exposed when the ejector rod retracts into the die core, and the die-casting mold core is more environment-friendly. And interference to die-casting production due to the fact that the spraying holes are exposed in the die-casting cavity can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of metal die-casting, and in particular to a rapid die-casting device for aluminum alloy die-castings. Background Art

[0002] A die-casting mold is a device used for die-casting production of metal parts. The die-casting mold is installed on a die-casting machine, and then pressurized metal liquid is filled into the die-casting mold. After cooling and shaping, a metal die-casting can be obtained, thereby realizing the die-casting production of metal parts. It is an important equipment in the production of metal parts in the prior art.

[0003] During the die-casting production of aluminum alloy die-castings, in order to improve the demolding convenience after the die-castings are formed, a release agent is usually sprayed in advance in the die-casting cavity in the die-casting mold. In the prior art, the spraying operation of the release agent is mostly carried out when the mold is opened. When the release agent is sprayed in the open mold state, although the convenience of spraying the release agent can be improved to a certain extent, the release agent diffuses in a mist form, which makes it easy for the release agent to escape into the surrounding environment, which not only easily causes waste of the release agent, but also easily causes pollution to the surrounding environment. In addition, when the release agent spraying operation is carried out in an open environment, it is also easy to cause uneven coating of the release agent, affecting the demolding effect of the final die-casting.

[0004] Therefore, a rapid die-casting device for aluminum alloy die-casting is proposed to solve some problems existing in the prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that the die-casting mold for the production of aluminum alloy die-castings is used for spraying the release agent when it is open, which easily leads to uneven coating of the release agent, affects the demoulding effect, and easily causes waste of the release agent, causing pollution to the surrounding environment, and to propose a rapid die-casting equipment for aluminum alloy die-castings.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions: A rapid die-casting device for aluminum alloy die-casting parts includes a first die group and a second die group, a die core is fixed on the side of the first die group close to the second die group, a template is slidably installed in the first die group, and a plurality of ejector rods vertically arranged therein are fixedly installed on the template, and the ejector rods are slidably inserted in the die core and extend to the outer end wall of the die core, a first channel extending into the ejector rod is opened in the template, a spray hole connected to the first channel is opened on the end cylindrical surface of the ejector rod, a push column vertically penetrating the template is slidably inserted on the side of the first die group away from the second die group, and a circular ring is fixedly installed on the push column, and the circular ring is arranged on the side of the template away from the second die group, a first spring for elastically supporting the template is fixed in the first die group, and the first spring is arranged on the side of the template close to the second die group, a die cavity adapted to the die core is opened on the side of the second die group close to the first die group, and an injection channel connected to the die cavity is opened on the side of the second die group away from the first die group.

[0007] Preferably, a gear is rotatably installed in the first module, and the outer side of the gear is meshed with a first rack and a second rack symmetrically arranged along the central axis, a column rod parallel to the first rack is fixed at the end of the first rack, and the column rod vertically penetrates to the outer side of the end wall of the first module close to the second module, and the second rack is fixedly connected to the template.

[0008] Preferably, a storage cavity corresponding to the column rod is provided in the second module, and a plunger is slidably installed in the storage cavity, one end of the plunger is flush with the end wall of the second module close to the first module, a piston cylinder is provided in the second module, and a piston column parallel to the plunger is slidably installed in the piston cylinder, and the piston column is fixedly connected to the plunger.

[0009] Preferably, a chamber connected to the injection channel is provided inside the second module, and the chamber is connected at the end of the chamber, a second channel connected between the mold cavity and the chamber is provided inside the second module, and the second channel is connected to the side of the cylindrical surface of the chamber close to the injection channel, a first valve block is slidably installed inside the chamber, a second spring for elastically supporting the first valve block is installed on the side of the chamber away from the injection channel, a third channel connected between the piston cylinder and the chamber is provided in the second module, one end of the third channel is connected to the side of the piston cylinder away from the piston column, and the other end of the third channel is connected to the side of the chamber away from the first valve block.

[0010] Preferably, an oil inlet hole is provided on the outer end wall of the first module group, a square cylinder is fixed on the template, and a second valve block connected to the first module group is slidably installed in the square cylinder, a hose connected to the oil inlet hole is fixedly connected to the side of the square cylinder away from the second valve block, a through hole connected to the first channel is opened on the side of the square cylinder away from the second valve block, and a one-way valve is adapted to be installed in both the hose and the through hole.

[0011] Preferably, a sleeve is movably sleeved on the outer side of each push rod, and the end of the sleeve is flush with the end of the push rod, and a connecting plate fixedly connected to the sleeve is slidably installed in the first module, and the connecting plate is fixedly connected to the push column.

[0012] Preferably, a screw is rotatably installed in the first module, a third valve block is slidably installed in the square cylinder away from the template and on one side of the second valve block, and the third valve block is threadedly screwed on the screw, and a third spring is fixedly connected between the second valve block and the third valve block.

[0013] Preferably, a first bevel tooth is rotatably installed in the first module group, a screw is fixedly connected to the central axis of the first bevel tooth, a rotating rod is rotatably installed in the first module group, one end of the rotating rod extends to the outer end wall of the first module group, and the other end of the rotating rod is fixed with a second bevel tooth meshing with the first bevel tooth.

[0014] Preferably, an oil cavity connected to the oil inlet hole is provided in the mold core, an oil outlet hole connected to the oil cavity is provided on the outer end wall of the first mold assembly, and a hose is connected between the oil cavity and the oil outlet hole.

[0015] Preferably, a temporary storage cavity communicating between the first channel and the through hole is fixed on the template, and a fourth valve block is slidably mounted on a side of the temporary storage cavity away from the first channel and the through hole, and a fourth spring for elastically supporting the fourth valve block is fixed in the temporary storage cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by opening the first channel inside the template and the ejector rod, and opening the spray hole connected to the first channel on the ejector rod, the device can spray the release agent on the relatively closed die-casting cavity in the mold closing state, which is beneficial to improving the overall uniformity of the release agent adhering to the mold core and the mold cavity, and further beneficial to improving the demolding efficiency of the die-casting after molding. In addition, spraying the release agent in the relatively closed die-casting cavity can prevent the release agent from escaping outward, which is beneficial to protecting the surrounding environment and avoiding the waste of the release agent, thereby realizing energy-saving, environmentally friendly, green and efficient die-casting production. At the same time, by opening the spray hole on the cylindrical surface at the end of the ejector rod, the spray hole will not be exposed when the ejector rod is retracted into the mold core, thereby avoiding the spray hole exposed in the die-casting cavity from interfering with the die-casting production, which is beneficial to ensuring the stability of the die-casting production process. 2. In the present invention, the column rod is slidably extended on the end wall of the first module group near the second module group, the first rack meshing with the gear is fixedly connected to the column rod, and the second rack meshing with the gear is fixedly connected to the template. With the meshing reversal of the gear, the first rack and the second rack, when the device is molded, the push rod can automatically extend into the die-casting cavity to perform the release agent spraying operation. At the same time, by slidingly installing the plunger in the receiving cavity, and connecting the chamber between the injection channel and the second channel, cooperating with the elastic support of the second spring to the first valve block, and the hydraulic oil filling between the piston cylinder, the chamber and the third channel, when the device is pressurized to inject aluminum alloy solution, the plunger retracts in the receiving cavity, releasing the squeezing of the column rod end, so that the push rod can automatically retract and reset after the release agent spraying is completed, which is convenient for the device to automatically perform the release agent spraying operation after the mold is closed, and automatically retract and reset when the aluminum alloy solution is injected, without manual control, which is conducive to improving the convenience of operation when the device is used; 3. In the present invention, by fixing the square cylinder on the template and connecting the second valve block adapted to the square cylinder to the first module, the square cylinder and the second valve block can be driven to move relative to each other during the reciprocating movement of the template, and the automatic pumping operation of the release agent is realized by cooperating with the restriction of the hose and the one-way valve in the through hole. At the same time, by screwing the third valve block on the screw rod and using the elastic connection of the third spring, the device can flexibly control the injection amount of the release agent at a single time according to the actual production needs, which is conducive to realizing the flexible control of the use amount of the release agent; 4. In the present invention, by movably sleeve-mounting the sleeve fixed on the connecting plate on the outer side of the ejector rod, and by fixedly connecting the connecting plate with the push column, when the device pushes the template to move through the push column and drives the ejector rod to extend out for demoulding, the sleeve can be synchronously moved and wrapped around the outer side of the end of the ejector rod to block the spray hole extending outward, so that the device can only spray the release agent in the mold closing state, avoiding the mutual interference between the spraying operation of the release agent on the spray hole of the ejector rod and the ejection and demoulding operation of the ejector rod on the molded die casting, which is conducive to ensuring the stability of the device in actual use; 5. In the present invention, by opening an oil cavity in the mold core, connecting the oil inlet hole and the oil outlet hole to the oil cavity, and externally connecting a heat exchanger connected to a release agent supply device, the circulation of the release agent can accelerate the efficiency of cooling and solidifying the die casting, which is beneficial to further improve the efficiency of the staff in using the device to perform die-casting production of aluminum alloy die castings, and the high-temperature release agent flowing between the oil cavity and the oil outlet hole is extracted through a hose for release agent spraying, which can effectively improve the atomization effect of the release agent, and is beneficial to improve the effect of the release agent covering the die-casting cavity in an all-round and uniform manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a stereoscopic diagram of the present invention in the mold opening state; Figure 2 It is a cross-sectional view of the present invention from a frontal perspective at a middle position in a mold opening state; Figure 3 This is a disassembled diagram of the push rod, sleeve, square cylinder and second valve block of the present invention; Figure 4 It is a front cross-sectional view of the ejector pin in the mold opening state of the present invention; Figure 5 It is a top view of the square tube in the mold opening state of the present invention; Figure 6 It is a cross-sectional view from the front perspective of the middle position when the mold is closed and the mold release agent is sprayed; Figure 7 It is a front view cross-sectional view of the gear when the mold is closed and the mold release agent is sprayed; Figure 8 It is a cross-sectional view of the ejector pin at the front view when the mold is closed and the mold release agent is sprayed; Fig. 9 It is a cross-sectional view of the ejector pin during die-casting of the present invention from the front perspective; Fig.10 It is a front cross-sectional view of the gear during die-casting of the present invention; Fig.11 It is a cross-sectional view from the front view of the middle position when the mold is opened and demoulded according to the present invention; Fig.12 It is a front cross-sectional view of the ejector pin during mold opening and demoulding of the present invention.

[0018] Serial number in the picture: 1. First module; 101. Mold core; 102. Template; 103. Ejector rod; 104. First channel; 105. Spray hole; 106. Push column; 107. Ring; 108. First spring; 2. Second mold assembly; 201. Mold cavity; 202. Injection channel; 3. Gear; 301. First rack; 302. Second rack; 303. Column; 4. Accommodation chamber; 401. Plunger; 402. Piston cylinder; 403. Piston column; 404. Chamber; 405. Second channel; 406. First valve block; 407. Second spring; 408. Third channel; 5. Oil inlet hole; 501. Square cylinder; 502. Second valve block; 503. Hose; 504. Through hole; 505. Screw; 506. Third valve block; 507. Third spring; 508. First bevel gear; 509. Rotating rod; 510. Second bevel gear; 6. Sleeve; 601. Connecting plate; 7. Oil cavity; 701. Oil outlet hole; 8. Temporary storage chamber; 801. Fourth valve block; 802. Fourth spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Embodiment: This embodiment provides a rapid die-casting device for aluminum alloy die-casting parts. Figure 1 - Fig.12 Specifically, it includes a first module 1 and a second module 2. A mold core 101 is fixed on one side of the first module 1 close to the second module 2. A template 102 is slidably installed in the first module 1, and a plurality of ejector pins 103 vertically arranged thereon are fixedly installed on the template 102. The ejector pins 103 are slidably inserted in the mold core 101 and extend to the outer end wall of the mold core 101. A first channel 104 extending into the ejector pin 103 is provided in the template 102. A spray hole 105 communicating with the first channel 104 is provided on the end cylindrical surface of the ejector pin 103. The first module 1 is away from the second module 2. A push column 106 which vertically penetrates the template 102 is slidably inserted on one side, and a ring 107 is fixedly installed on the push column 106. The ring 107 is arranged on the side of the template 102 away from the second module 2. A first spring 108 for elastically supporting the template 102 is fixed in the first module 1, and the first spring 108 is arranged on the side of the template 102 close to the second module 2. A mold cavity 201 adapted to the mold core 101 is provided on the side of the second module 2 close to the first module 1, and an injection channel 202 connected with the mold cavity 201 is provided on the side of the second module 2 away from the first module 1.

[0021] When the device is used, the staff installs the device in a metal die-casting machine, and drives the first die set 1 and the second die set 2 to move relative to each other through the metal die-casting machine to perform die opening and closing operations to perform die-casting production of aluminum alloy die-casting parts. When the first die set 1 and the second die set 2 are driven by the die-casting machine to close to each other and close the mold, the mold core 101 cooperates with the mold cavity 201 to form a die-casting cavity. At this time, the aluminum alloy solution is not injected first, and the template 102 is controlled to move first. Driven by the movement of the template 102, the ejector pin 103 is driven to be ejected in the die-casting cavity toward the second die set 2, so that the spray hole 105 opened on the cylindrical surface at the end of the ejector pin 103 is exposed in the relatively closed die-casting cavity. Subsequently, with the help of the connection between the first channel 104 and the spray hole 105, the release agent is sprayed into the die-casting cavity through the spray hole 105, so that the release agent is evenly and comprehensively attached to the inner end wall of the die-casting cavity, and then the template 102 drives the push rod 103 to move in the opposite direction to reset, and the aluminum alloy solution is pressurized and injected into the die-casting cavity through the injection channel 202, and then the pressure is maintained. After the aluminum alloy solution is solidified and formed in the die-casting cavity, the first module 1 and the second module 2 are controlled by the die-casting machine to move and separate, and then the template 102 moves again to drive the push rod 103 to move toward the second module 2, and the formed aluminum alloy die-casting is pushed down from the mold core 101, completing the demolding operation after the aluminum alloy die-casting is formed.

[0022] During the implementation of the device, by opening the first channel 104 inside the template 102 and the ejector rod 103, and opening the spray hole 105 connected to the first channel 104 on the ejector rod 103, the device can spray the release agent on the relatively closed die-casting cavity in the mold closing state, which is beneficial to improving the comprehensiveness of the release agent adhering to the mold core 101 and the mold cavity 201, and is beneficial to improving the demolding efficiency of the die-casting after molding, thereby helping to improve production efficiency. In addition, spraying the release agent in the relatively closed die-casting cavity can prevent the release agent from escaping outward, which is beneficial to protecting the surrounding environment, and can avoid wasting the release agent, which is beneficial to achieving energy-saving, environmentally friendly and green and efficient production. The spray hole 105 is opened on the cylindrical surface at the end of the ejector rod 103, so that when the ejector rod 103 is retracted into the mold core 101, the spray hole 105 will not be exposed to the outside, avoiding the spray hole 105 exposed in the die-casting cavity to interfere with the die-casting production, which is beneficial to ensuring the stability of the die-casting production process.

[0023] In the specific implementation process, Figure 2 - Figure 4 and Figure 7As shown, a gear 3 is rotatably installed in the first die set 1, and the outer side of the gear 3 is meshed with a first rack 301 and a second rack 302 symmetrically arranged on the central axis, and a column 303 arranged parallel to the first rack 301 is fixed at the end of the first rack 301, and the column 303 vertically penetrates to the outer side of the end wall of the first die set 1 close to the second die set 2, and the second rack 302 is fixedly connected to the template 102. When the device is used, when the first die set 1 and the second die set 2 are close to each other for mold closing, due to the column 303 The end protrudes from the outer side of the end wall of the first module 1 close to the second module 2, so that an extrusion force is applied to the column rod 303 during the mold closing process, driving the first rack 301 to move in the first module 1 away from the second module 2, and with the help of the meshing reversing of the gear 3, the second rack 302 drives the template 102 to move in the direction close to the second module 2, thereby realizing the operation of automatically pushing the ejector rod 103 into the die-casting cavity during the mold closing, and facilitating the device to automatically spray the release agent after the mold closing.

[0024] In the specific implementation process, Figure 6 - Fig.10 As shown, a receiving cavity 4 corresponding to the column rod 303 is provided in the second mold group 2, and a plunger 401 is slidably installed in the receiving cavity 4, one end of the plunger 401 is flush with the end wall of the second mold group 2 close to the first mold group 1, a piston cylinder 402 is provided in the second mold group 2, and a piston column 403 parallel to the plunger 401 is slidably installed in the piston cylinder 402, and the piston column 403 is fixedly connected to the plunger 401, and a chamber 404 connected to the injection channel 202 is provided inside the second mold group 2, and the chamber 404 is connected at the end of the chamber 404, and a connecting portion between the mold cavity 201 and the chamber 404 is provided inside the second mold group 2. 4, and the second channel 405 is connected to the side of the cylindrical surface of the chamber 404 close to the injection channel 202, a first valve block 406 is slidably installed inside the chamber 404, and a second spring 407 for elastically supporting the first valve block 406 is installed on the side of the chamber 404 away from the injection channel 202, a third channel 408 connected between the piston cylinder 402 and the chamber 404 is opened in the second module 2, one end of the third channel 408 is connected to the side of the piston cylinder 402 away from the piston column 403, and the other end of the third channel 408 is connected to the side of the chamber 404 away from the first valve block 406.

[0025] When the device is used, the column rod 303 is pressed into the first mold group 1 after the mold is closed, and no longer protrudes outside. The operation of pressing the column rod 303 in provides power for the automatic extension of the ejector rod 103 after the mold is closed. During the process of aluminum alloy molten metal injection, the aluminum alloy solution is injected into the device through the injection channel 202. The aluminum alloy solution first enters the chamber 404 through the injection channel 202. Under the driving force provided by the pressurized injection of the aluminum alloy solution, the first valve block 406 overcomes the second spring 407. The piston cylinder 402, the chamber 404 and the third channel 408 are connected to each other and are filled with hydraulic oil. During the movement of the first valve block 406, the hydraulic oil in the chamber 404 enters the piston cylinder 402 through the third channel 408, pushing the piston column 403 installed in the piston cylinder 402 to move away from the first module 1. During the movement of the piston column 403, the plunger 401 is driven to move in the receiving chamber 4 away from the first module 1, so that the receiving module 4 is One end of the receiving cavity 4 close to the first die set 1 is vacant. Since the receiving cavity 4 is arranged corresponding to the column rod 303, after the plunger 401 moves, the end of the column rod 303 loses its obstruction. Under the elastic support of the first spring 108, the end of the column rod 303 can be re-protruded to the outside of the first die set 1 and enter the vacant area in the plunger 401. In the process of the column rod 303 re-protruding, the ejector pin 103 will automatically retract into the mold core 101 and no longer protrude on the outside, so as to achieve the die casting process. Regarding the automatic retraction operation of the push rod 103, it should be noted that the elastic support strength of the second spring 407 should be greater than the elastic support strength of the first spring 108. As the first valve block 406 moves, the connection position between the chamber 404 and the second channel 405 is exposed and is no longer blocked by the first valve block 406. At this time, the aluminum alloy molten metal injected into the chamber 404 will enter the die-casting cavity formed by the mold core 101 and the mold cavity 201 through the second channel 405 to carry out the die-casting production of aluminum alloy die-castings.

[0026] In the specific implementation process, Figure 1 , Figure 4 - Figure 6 and Fig.11As shown, an oil inlet hole 5 is provided on the outer end wall of the first module 1, a square cylinder 501 is fixed on the template 102, and a second valve block 502 connected to the first module 1 is slidably installed in the square cylinder 501, a hose 503 connected to the oil inlet hole 5 is fixedly connected to the side of the square cylinder 501 away from the second valve block 502, and a through hole 504 connected to the first channel 104 is opened on the side of the square cylinder 501 away from the second valve block 502, and a one-way valve is adapted to be installed in the hose 503 and the through hole 504. The outer side of each push rod 103 A sleeve 6 is provided on each movable sleeve, and the end of the sleeve 6 is flush with the end of the push rod 103, a connecting plate 601 fixedly connected to the sleeve 6 is slidably installed in the first module 1, and the connecting plate 601 is fixedly connected to the push column 106, a temporary storage chamber 8 connected between the first channel 104 and the through hole 504 is fixed on the template 102, and a fourth valve block 801 is slidably installed on the side of the temporary storage chamber 8 away from the first channel 104 and the through hole 504, and a fourth spring 802 for elastically supporting the fourth valve block 801 is fixed in the temporary storage chamber 8.

[0027] When the device is in use, the oil inlet 5 is externally connected to a release agent supply device, and the release agent enters the interior of the device through the oil inlet 5. When the template 102 is driven to move back and forth, the square cylinder 501 fixedly connected thereto is driven to move back and forth synchronously, thereby driving the second valve block 502 to reciprocate and produce a relative position change with the square cylinder 501, and continuously changing the storage space in the square cylinder 501. Restricted by the hose 503 and the one-way valve in the through hole 504, when the storage space in the square cylinder 501 increases, the release agent enters the square cylinder 501 through the hose 503, and then when the space in the square cylinder 501 decreases, the release agent entering the storage space in the square cylinder 501 is discharged through the through hole 504. The mold release agent is squeezed into the temporary storage chamber 8. When the spray hole 105 is not opened, the mold release agent will be temporarily stored in the temporary storage chamber 8. As the mold release agent continues to be filled into the temporary storage chamber 8, the fourth valve block 801 overcomes the elastic support of the fourth spring 802 and moves. Under the elastic support of the fourth spring 802, the mold release agent filled in the temporary storage chamber 8 is in a pressurized state. In the mold closing state, the column rod 303 is squeezed and contracted in the first module 1, resulting in the ejector rod 103 moving into the die-casting cavity. The spray hole 105 is exposed in the die-casting cavity. Under the connection of the first channel 104 and the elastic reset of the fourth spring 802, the mold release agent in the temporary storage chamber 8 can be atomized and sprayed in the die-casting cavity through the spray hole 105, thereby completing the spraying operation of the mold release agent.

[0028] By disposing the fourth valve block 801 in the temporary storage chamber 8 and providing a fourth spring 802 in the temporary storage chamber 8 for elastically supporting the fourth valve block 801, the release agent filled in the temporary storage chamber 8 can be continuously pressurized, which is beneficial to ensure the stability of the release agent spraying into the die-casting cavity through the spray hole 105 when the spray hole 105 is exposed.

[0029] When the device opens the mold to demould the die-casting after molding, the push column 106 will move toward the second die set 2 under the push of the hydraulic push rod on the die-casting, and the push column 106 drives the ring 107 to move toward the second die set 2, and synchronously pushes the template 102, thereby driving the ejector rod 103 to extend outward. Synchronously, during the movement of the push column 106 toward the second die set 2, the connecting plate 601 fixedly connected to the end of the push column 106 will be driven to move toward the second die set 2, driving the sleeve 6 sleeved on the outside of the ejector rod 103 to move synchronously with the ejector rod 103 toward the second die set 2. When demoulding, The sleeve 6 and the ejector rod 103 move in coordination, so that although the ejector rod 103 will protrude from the outside of the mold core 101 to push the molded die-casting to be demolded, the spray hole 105 opened on the cylindrical surface of the end of the ejector rod 103 will be wrapped in the sleeve 6 and will not be exposed, which can prevent the release agent from being accidentally sprayed out through the spray hole 105 during demolding, so that the device will only spray the release agent in the mold closing state, and the release agent spraying operation of the spray hole 105 on the ejector rod 103 will not interfere with the ejection and demolding operation of the molded die-casting by the ejector rod 103, which is beneficial to ensure the stability of the device during actual use.

[0030] A screw rod 505 is rotatably installed in the first module 1, a third valve block 506 is slidably installed on one side of the square cylinder 501 away from the template 102 and the second valve block 502, and the third valve block 506 is threadedly screwed on the screw rod 505, a third spring 507 is fixedly connected between the second valve block 502 and the third valve block 506, a first bevel gear 508 is rotatably installed in the first module 1, the screw rod 505 is fixedly connected to the central axis of the first bevel gear 508, a rotating rod 509 is rotatably installed in the first module 1, one end of the rotating rod 509 extends to the outer end wall of the first module 1, and the other end of the rotating rod 509 is fixed with a second bevel gear 510 meshing with the first bevel gear 508.

[0031] When the device is used, the staff can control the spraying amount of the single release agent during mold closing according to actual production needs. During the control process, the staff can drive the rotating rod 509 to rotate from the outside of the first module 1, and drive the screw 505 to rotate by means of the meshing of the second bevel gear 510 and the first bevel gear 508, and then drive the third valve block 506 to move and adjust along the screw 505 in the square cylinder 501 by means of the threaded meshing between the screw 505 and the third valve block 506. When the third valve block 506 moves and adjusts its position, the position of the second valve block 502 is changed synchronously by means of the connection of the third spring 507, so as to achieve the desired effect. Figure 6Taking the structure in the middle as an example, when the third valve block 506 drives the second valve block 502 to move rightward in the square cylinder 501 for adjustment, the maximum capacity of the internal storage space is reduced during the reciprocating movement of the square cylinder 501, which reduces the efficiency of pumping the release agent during the relative movement of the square cylinder 501 and the second valve block 502, thereby reducing the amount of release agent used in a single die-casting process and achieving flexible control of the amount of release agent used. The third spring 507 is connected between the second valve block 502 and the third valve block 506 to avoid the square cylinder 501 from being compressed out of place when it is reset and moved. It should be noted that the elastic support strength of the third spring 507 should be greater than the elastic support strength of the fourth spring 802.

[0032] In the specific implementation process, Figure 6 As shown, an oil cavity 7 connected to the oil inlet hole 5 is provided in the mold core 101, an oil outlet hole 701 connected to the oil cavity 7 is provided on the outer end wall of the first mold group 1, and a hose 503 is connected between the oil cavity 7 and the oil outlet hole 701. When the device is used, the oil outlet hole 701 can be connected to an external heat exchanger, and the heat exchanger can be connected to a release agent supply device, so that before the mold is opened and demolded, a low-temperature release agent can be supplied into the oil cavity 7 through the oil inlet hole 5, and after flowing in the oil cavity 7 and absorbing heat, it is introduced into the external heat exchanger through the oil outlet hole 701, quickly dissipates heat and cools down in the heat exchanger, and then flows back to the release agent. In the mold agent supply device, the circulation of the release agent can accelerate the cooling and solidification efficiency of the die-casting parts, which is beneficial to further improve the efficiency of the staff in using the device for die-casting production of aluminum alloy die-casting parts, and the hose 503 is connected between the oil chamber 7 and the oil outlet hole 701, so that the square cylinder 501 and the second valve block 502 move relative to each other and pump the release agent into the temporary storage chamber 8 to present a high-temperature state. When the high-temperature release agent is sprayed into the interior of the die-casting cavity through the spray hole 105, the atomization effect of the release agent can be effectively improved, which is beneficial to improve the effect of the release agent covering the die-casting cavity comprehensively and evenly.

[0033] Specifically, the working principle and operation method of the present invention are as follows: The staff installed the device on the die-casting machine, and used the die-casting machine to drive the first die set 1 and the second die set 2 to move relative to each other, and the first die set 1 and the second die set 2 approached each other to perform the mold closing operation. At this time, the plunger 401 blocked the end position of the receiving cavity 4, and squeezed the end of the column 303, so that the column 303 was pressed into the first die set 1. With the meshing reversal of the gear 3, the first rack 301 and the second rack 302, the template 102 was driven to overcome the elastic support of the first spring 108. The push rod 103 is supported and driven to move toward the second die set 2, so that the end of the push rod 103 protrudes outside the mold core 101, and the spray hole 105 opened on the cylindrical surface of the end of the push rod 103 is exposed in the die-casting cavity formed by the mold core 101 and the mold cavity 201. In this state, the release agent filled in the temporary storage chamber 8 is sprayed into the relatively closed die-casting cavity through the spray hole 105 under the elastic support of the fourth spring 802 and the connection with the first channel 104, thereby realizing the closed spraying operation of the release agent.

[0034] When the template 102 moves toward the second module 2, the square cylinder 501 will be driven away from the second valve block 502, so that the internal storage space of the square cylinder 501 will increase. With the help of negative pressure suction, the release agent between the oil chamber 7 and the oil outlet hole 701 will enter the storage space inside the square cylinder 501 through the hose 503.

[0035] When the aluminum alloy solution is injected into the device through the injection channel 202, the first valve block 406 overcomes the elastic support of the second spring 407 and moves in the chamber 404 with the help of the pressurized injection of the aluminum alloy solution. During this process, the hydraulic oil in the chamber 404 is filled into the piston cylinder 402 through the third channel 408, pushing the piston column 403, and then driving the plunger 401 to move in the storage chamber 4 in the direction away from the first module 1. The end of the storage chamber 4 close to the first module 1 is left vacant, so that the end of the column rod 303 loses the push, and the end of the column rod 303 can be inserted into the vacant area in the storage chamber 4. Under the elastic reset of the first spring 108, the template 102 resets and moves in the direction away from the second module 2, driving the push rod 103 to retract into the core 101.

[0036] When the template 102 moves away from the second module 2, the square tube 501 is driven to be relatively close to the second valve block 502, so that the storage space in the square tube 501 is compressed, and the release agent sucked into the square tube 501 is input into the temporary storage chamber 8 through the through hole 504 for temporary storage.

[0037] Since the first valve block 406 is pushed and moved by the aluminum alloy solution, the connecting position between the second channel 405 and the chamber 404 is exposed, and the aluminum alloy solution can be injected into the die-casting cavity through the second channel 405. The aluminum alloy solution is pressurized and injected into the die-casting cavity. After cooling and shaping, the production of the aluminum alloy die-casting is completed. During the cooling process, the external release agent supply device continuously injects the release agent into the oil cavity 7 through the oil inlet hole 5. After absorbing heat in the oil cavity 7, the release agent is introduced into the heat exchanger through the oil outlet hole 701. After dissipating heat and cooling, it flows back to the release agent supply device and circulates to achieve active cooling of the die-casting.

[0038] When the mold is opened and demolded, the hydraulic push rod on the die casting pushes the push column 106 to move toward the second mold group 2, and the template 102 is pushed to drive the push rod 103 to move toward the second mold group 2 and re-extend to the outside of the mold core 101. Synchronously, the connecting plate 601 is pushed to drive the sleeve 6 to move toward the second mold group 2, so that when the push rod 103 extends out to push the die casting to be demolded, the sleeve 6 is always wrapped around the outside of the end of the push rod 103 to block the spray hole 105, so as to avoid the release agent from being accidentally sprayed out through the spray hole 105 during demolding, thereby ensuring the stability of the die casting production of aluminum alloy die castings.

[0039] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rapid die-casting device for aluminum alloy die-castings, comprising a first die set (1) and a second die set (2), characterized in that: A mold core (101) is fixed on a side of the first mold group (1) close to the second mold group (2), a template (102) is slidably mounted in the first mold group (1), and a plurality of push rods (103) vertically mounted on the template (102) are fixedly mounted, and the push rods (103) are slidably inserted in the mold core (101) and extend to the outer end wall of the mold core (101), a first channel (104) extending into the push rods (103) is provided in the template (102), a spray hole (105) connected to the first channel (104) is provided on the end cylindrical surface of the push rod (103), and a vertically penetrating nozzle (104) is slidably inserted on a side of the first mold group (1) away from the second mold group (2) A push pin (106) passes through the template (102), and a circular ring (107) is fixedly mounted on the push pin (106), the circular ring (107) being arranged on a side of the template (102) away from the second module (2), a first spring (108) for elastically supporting the template (102) being fixed in the first module (1), and the first spring (108) being arranged on a side of the template (102) close to the second module (2), a mold cavity (201) adapted to the mold core (101) being provided on a side of the second module (2) close to the first module (1), and an injection channel (202) communicating with the mold cavity (201) being provided on a side of the second module (2) away from the first module (1).

2. The rapid die-casting equipment for aluminum alloy die-casting according to claim 1, characterized in that: A gear (3) is rotatably mounted inside the first module (1), and a first rack (301) and a second rack (302) are meshed on the outer side of the gear (3) and are symmetrically arranged about the central axis. A column (303) arranged parallel to the first rack (301) is fixed at the end of the first rack (301), and the column (303) vertically penetrates to the outer side of the end wall of the first module (1) close to the second module (2). The second rack (302) is fixedly connected to the template (102).

3. The rapid die-casting equipment for aluminum alloy die-casting according to claim 2, characterized in that: The second module (2) is provided with a storage cavity (4) corresponding to the column rod (303), and a plunger (401) is slidably mounted in the storage cavity (4), one end of the plunger (401) is flush with the end wall of the second module (2) close to the first module (1), the second module (2) is provided with a piston cylinder (402), and a piston column (403) is slidably mounted in the piston cylinder (402) and is arranged parallel to the plunger (401), and the piston column (403) is fixedly connected to the plunger (401).

4. The rapid die-casting equipment for aluminum alloy die-casting according to claim 3, characterized in that: The second mold assembly (2) has a chamber (404) in communication with the injection channel (202), and the chamber (404) is connected at the end of the chamber (404). The second mold assembly (2) has a second channel (405) in communication between the mold cavity (201) and the chamber (404), and the second channel (405) is connected to a side of the cylindrical surface of the chamber (404) close to the injection channel (202). A first valve block (406) is slidably mounted in the chamber (404). A second spring (407) for elastically supporting the first valve block (406) is installed on a side of the piston cylinder (404) away from the injection channel (202), and a third channel (408) connected between the piston cylinder (402) and the chamber (404) is opened in the second module (2), one end of the third channel (408) is connected to a side of the piston cylinder (402) away from the piston column (403), and the other end of the third channel (408) is connected to a side of the chamber (404) away from the first valve block (406).

5. The rapid die-casting equipment for aluminum alloy die-casting according to claim 1, characterized in that: An oil inlet hole (5) is provided on the outer end wall of the first module (1); a square cylinder (501) is fixed on the template (102); a second valve block (502) connected to the first module (1) is slidably mounted in the square cylinder (501); a hose (503) connected to the oil inlet hole (5) is fixedly connected to a side of the square cylinder (501) away from the second valve block (502); a through hole (504) connected to the first channel (104) is provided on a side of the square cylinder (501) away from the second valve block (502); and one-way valves are adapted to be mounted in both the hose (503) and the through hole (504).

6. The rapid die-casting equipment for aluminum alloy die-casting according to claim 5, characterized in that: A sleeve (6) is movably sleeved on the outer side of each push rod (103), and the end of the sleeve (6) is flush with the end of the push rod (103). A connecting plate (601) fixedly connected to the sleeve (6) is slidably mounted in the first module (1), and the connecting plate (601) is fixedly connected to the push column (106).

7. The rapid die-casting equipment for aluminum alloy die-casting according to claim 5, characterized in that: A screw rod (505) is rotatably installed in the first die set (1), and a third valve block (506) is slidably installed in the square cylinder (501) on a side away from the die plate (102) and the second valve block (502), and the third valve block (506) is threadedly screwed on the screw rod (505), and a third spring (507) is fixedly connected between the second valve block (502) and the third valve block (506).

8. The rapid die-casting equipment for aluminum alloy die-casting according to claim 7, characterized in that: A first bevel tooth (508) is rotatably mounted in the first module (1), the screw rod (505) is fixedly connected to the central axis of the first bevel tooth (508), a rotating rod (509) is rotatably mounted in the first module (1), one end of the rotating rod (509) extends to the outer end wall of the first module (1), and a second bevel tooth (510) meshing with the first bevel tooth (508) is fixed to the other end of the rotating rod (509).

9. The rapid die-casting equipment for aluminum alloy die-casting according to claim 5, characterized in that: An oil cavity (7) communicating with the oil inlet hole (5) is provided in the mold core (101), an oil outlet hole (701) communicating with the oil cavity (7) is provided on the outer end wall of the first mold assembly (1), and the hose (503) is connected between the oil cavity (7) and the oil outlet hole (701).

10. The rapid die-casting equipment for aluminum alloy die-casting according to claim 5, characterized in that: A temporary storage chamber (8) communicating between the first channel (104) and the through hole (504) is fixed on the template (102), and a fourth valve block (801) is slidably mounted on a side of the temporary storage chamber (8) away from the first channel (104) and the through hole (504), and a fourth spring (802) for elastically supporting the fourth valve block (801) is fixed in the temporary storage chamber (8).

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