A discharge ejection device and method for die casting of automobile parts

Abstract

The present invention relates to the field of die-casting unloading and ejection technology, more specifically, to an unloading and ejection device and method for die-casting of automotive parts, including a unloading box, a controller, a support plate, a unloading mounting plate and a middle partition, wherein the controller is arranged on the unloading box, the support plates are in a group and are symmetrically arranged on both sides of the unloading box, the unloading mounting plates are in two numbers and are symmetrically arranged on the unloading box, the middle partition is arranged in the unloading box and divides the unloading box into two cavities, the unloading and ejection device also includes a cooling box and an ejection air cooling component, the cooling box is arranged on the unloading box, and the ejection air cooling component is arranged in the unloading box and is connected to the cooling box. The device has a high degree of automation and rich functions, and while completing the unloading of the ejection, it realizes secondary cooling of the surface of the die-casting that generates high temperature due to die-casting, which is convenient for the staff to take the die-casting without waiting time.

Description

Technical Field

[0001] The invention relates to the technical field of discharge and ejection for die casting, and more specifically to a discharge and ejection device for die casting of automobile parts. Background Art

[0002] Die casting is a method of obtaining castings by filling the die cavity of a die-casting mold with liquid or semi-liquid metal at high speed under high pressure and rapidly solidifying it under pressure. The die-casting mold used is called a die-casting mold. The design quality and manufacturing quality of the die-casting mold directly determine the shape and precision of the casting, surface requirements and internal quality, and the smoothness of production operations. In the field of automobile production, most of the automobile parts are processed by die-casting molding technology. During processing, the corresponding model of mold is often used for die casting under mold contact to obtain castings of automobile parts.

[0003] After the automobile parts are die-cast, they need to be ejected by a discharge ejection device. The existing discharge ejection device has a simple structure and a single function. After the die-casting is ejected, due to the residual temperature on the surface of the die-casting, the staff needs to wait for a while before taking the material. Otherwise, scalding may occur easily and the cycle is long. Therefore, there is an urgent need for a discharge ejection device that can improve the above defects. Summary of the invention

[0004] The object of the present invention is to provide a discharge ejection device for die-casting of automobile parts to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A discharge ejection device for die-casting of automobile parts, comprising a discharge box, a controller, a support plate, a discharge mounting plate and a middle partition, wherein the controller is arranged on the discharge box, the support plates are in a group and are symmetrically arranged on both sides of the discharge box, the discharge mounting plates are in two and are symmetrically arranged on the discharge box, the middle partition is arranged in the discharge box and divides the discharge box into two cavities, the discharge box is symmetrically provided with a plurality of ejection holes, the discharge mounting plate is equidistantly provided with a plurality of fixing bolts, the discharge ejection device also comprises a cooling box and an ejection air cooling component, the cooling box is arranged on the discharge box, the ejection air cooling component is arranged in the discharge box and is connected with the cooling box, and is used for controlling the ejection and discharge of the die-casting, and when the ejection distance of the die-casting reaches an expected value, the ejection air cooling component controls the air in the cooling box to spray toward the surface of the die-casting.

[0007] A further technical solution of the present application is as follows: the ejection air cooling assembly includes a driving structure and an ejection module, the driving structure is arranged on the discharge box, the ejection modules are in several groups and are symmetrically arranged on the ejection box, the ejection modules and the ejection holes cooperate, the ejection modules and the driving structure are connected, and when the driving structure is working, the ejection module is controlled to work and eject the die-casting, and the ejection module is connected to the cooling box.

[0008] A further technical solution of the present application is as follows: the ejection module includes a ejection column, a cooling telescopic cylinder, a locking structure and a positioning member, the ejection column is movably arranged in the ejection hole, the positioning member is movably arranged on the support plate, the positioning member is connected to the ejection column on a side away from the support plate, the positioning member is connected to a driving structure, and when the driving structure is at work, it controls the operation of the positioning member and adjusts the position of the ejection column in the unloading box, the cooling telescopic cylinder is arranged on the ejection column and has a telescopic structure, the cooling telescopic cylinder is connected to the cooling box, a plurality of exhaust outlets are arranged on the cooling telescopic cylinder, the locking structure is arranged on the cooling telescopic cylinder, and is used to monitor the position of the cooling telescopic cylinder and control the locking of the telescopic state of the cooling telescopic cylinder, and when the cooling telescopic cylinder contracts, the cold air in the cooling box is controlled to be output from the exhaust outlet.

[0009] A further technical solution of the present application is as follows: the cooling telescopic cylinder comprises an outer cylinder and an inner cylinder, the outer cylinder is arranged at one end of the ejection column away from the ejection hole, a matching slot is formed in the outer cylinder, the inner cylinder is slidably inserted in the matching slot, the inner cylinder is connected to the cooling box, the inner cylinder is connected to the adjusting piece, the inner cylinder and the outer cylinder are connected by an elastic piece, and a plurality of exhaust outlets are arranged on one side of the outer cylinder close to the ejection column.

[0010] The present application has a further technical solution: the exhaust port is arranged obliquely relative to the outer cylinder.

[0011] The present application has a further technical solution: the positioning component includes a positioning threaded rod, a driven gear and a threaded sleeve, the positioning threaded rod is movably arranged on a support plate, the driven gear is sleeved on the positioning threaded rod, the threaded sleeve is arranged on an inner cylinder, one end of the positioning threaded rod is slidably inserted in the threaded sleeve and the two are threadedly matched, and the driving structure controls the rotation of the driven gear when working.

[0012] The present application has a further technical solution: the driving structure includes a stepper motor, a group of power drive arms, a No. 1 tooth and a No. 2 tooth, a group of the power drive arms being symmetrically arranged on a discharge box, the discharge box being symmetrically provided with lateral through holes that slide with the power drive arms, a driving gear being movably arranged in the discharge box through a connecting shaft, the stepper motor being arranged in the discharge box and its output end being connected to the connecting shaft, the number of the No. 1 teeth being two groups and the number of the No. 1 teeth in each group being several, the No. 1 teeth being meshed with the driven gear, the number of the No. 2 teeth being several and being equidistantly arranged on the power drive arms, the No. 2 teeth being meshed with the driving gear.

[0013] A further technical solution of the present application is as follows: the locking structure includes a limit guide seat, a protruding block, a limit plug rod, a limit hole and a monitoring and adjusting member; a group of protruding blocks are symmetrically arranged on the outer cylinder; the limit guide seats are a group and are symmetrically arranged in the unloading box; the protruding block and the limit guide seat are slidably matched; the limit plug rod is movably arranged on the protruding block and the two are elastically connected; the limit plug rod slides through the outer cylinder; the limit hole is arranged on the inner cylinder and is located on the moving path of the limit plug rod; the monitoring and adjusting member is arranged on the outer cylinder and connected to the limit plug rod, for monitoring the position of the outer cylinder on the limit guide seat and controlling the separation of the limit plug rod and the limit hole.

[0014] A further technical solution of the present application is as follows: the monitoring and adjusting component includes a resistance moving block, a No. 1 hinge head, a No. 2 hinge head and a push arm, the resistance moving block is movably arranged on the protruding block and the two are elastically connected, the No. 1 hinge head is arranged at an end of the limiting plug rod away from the limiting hole, the No. 2 hinge head is arranged on the resistance moving block, the resistance moving block is located on the inner side of the limiting guide seat, and the No. 1 hinge head and the No. 2 hinge head are movably connected via a push arm.

[0015] A method for ejecting materials for die-casting of automobile parts is applied to the ejecting material device described in the above technical solution. The specific steps of the method are as follows:

[0016] S100: The entire discharge box is fixedly installed on the die-casting equipment by fixing bolts, and the die-casting parts produced by die-casting can be left on the surface of the discharge box, and the top-loading air-cooling component is controlled by the controller;

[0017] S200: When the ejector air cooling assembly is working, the die casting can be ejected from the surface of the discharge box, and when the ejection displacement of the ejector air cooling assembly reaches the expected value, a cold air flow can be sprayed onto the surface of the high-temperature die casting to achieve secondary cooling of the high-temperature die casting.

[0018] Compared with the prior art, the technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0019] The embodiment of the present invention sets a driving structure and a ejecting module, and utilizes the linkage structure between the driving structure and the ejecting module. The driving structure can control the ejecting module to eject the die-casting formed on the surface of the unloading box for unloading. In this process, the ejecting distance can be automatically monitored by the ejecting module. When the ejecting distance reaches the expected position, the cold air in the cooling box can be sprayed to the surface of the die-casting formed by the die-casting through the ejecting module, thereby automatically realizing the secondary cooling of the die-casting. Compared with the traditional unloading ejecting device, the device has a high degree of automation and rich functions. While completing the ejection and unloading, it realizes the secondary cooling of the surface of the die-casting generated at a high temperature due to die-casting, which is convenient for the staff to take the die-casting without waiting time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a discharge and ejection device for die-casting of automobile parts in an embodiment of the present invention;

[0021] Figure 2 A half-section view of a discharge box in a discharge ejection device for die-casting of automotive parts in an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the internal structure of a discharge box in a discharge ejection device for die-casting of automotive parts in an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the driving structure of the unloading and ejecting device for die-casting of automobile parts in an embodiment of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the ejector air cooling assembly in the ejector device for die casting of automobile parts in an embodiment of the present invention;

[0025] Figure 6 A half-section view of an inner cylinder and an outer cylinder in a discharge ejection device for die-casting of automotive parts according to an embodiment of the present invention;

[0026] Figure 7 A half-section view of the outer cylinder of the unloading and ejecting device for die-casting of automobile parts in an embodiment of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the locking structure in the unloading and ejecting device for die-casting of automobile parts in an embodiment of the present invention.

[0028] Explanation of the symbols in the schematic diagram:

[0029] 1-discharging box, 2-controller, 3-cooling box, 4-support plate, 5-ejection column, 6-discharging mounting plate, 7-middle partition, 8-lateral perforation, 9-driven gear, 10-power drive arm, 11-adjusting threaded rod, 12-stepping motor, 13-driving gear, 15-No. 1 tooth, 16-No. 2 tooth, 17-threaded sleeve, 18-limiting guide seat, 19-outer cylinder, 20-inner cylinder, 21-limiting hole, 22-exhaust port, 23-matching slot, 24-resistance moving block, 25-limiting plug rod, 26-No. 2 hinge joint, 27-push arm, 28-No. 2 hinge joint, 29-protruding block, 30-connecting shaft, 31-ejection hole, 32-fixing bolt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention is further described below in combination with the embodiments.

[0031] See also Figure 1-Figure 8 In one embodiment of the present application, a discharge ejection device for die-casting of automotive parts includes a discharge box 1, a controller 2, a support plate 4, a discharge mounting plate 6 and a middle partition 7, wherein the controller 2 is arranged on the discharge box 1, the support plates 4 are in a group and are symmetrically arranged on both sides of the discharge box 1, the discharge mounting plates 6 are in two numbers and are symmetrically arranged on the discharge box 1, the middle partition 7 is arranged in the discharge box 1 and divides the discharge box 1 into two cavities, the discharge box 1 is symmetrically provided with a plurality of ejection holes 31, the discharge mounting plate 6 is equidistantly provided with a plurality of fixing bolts 32, the discharge ejection device also includes a cooling box 3 and an ejection air cooling component, the cooling box 3 is arranged on the discharge box 1, the ejection air cooling component is arranged in the discharge box 1 and is connected to the cooling box 3, and is used to control the ejection and discharge of the die-casting, and the ejection air cooling component controls the air in the cooling box 3 to spray toward the surface of the die-casting when the ejection distance of the die-casting reaches an expected value.

[0032] In this exemplary embodiment, the ejection air cooling assembly includes a driving structure and an ejection module. The driving structure is arranged on the discharge box 1. The ejection modules are in several groups and are symmetrically arranged on the ejection box. The ejection modules cooperate with the ejection holes 31. The ejection modules are connected to the driving structure. When the driving structure is working, it controls the ejection module to work and ejects the die-casting. The ejection module is connected to the cooling box 3.

[0033] In actual application, the entire unloading box 1 is fixedly installed on the die-casting equipment by using fixing bolts 32. The die-castings produced by die-casting can be left on the surface of the unloading box 1. The driving structure is controlled by the controller 2 to work. When the driving structure is working, the ejecting module is controlled to work to eject the die-castings. When the ejecting distance of the die-castings reaches the expected value, the ejecting module can spray the cold air in the cooling box 3 to the surface of the die-castings, thereby realizing the secondary cooling of the die-castings and completing the unloading and ejecting work of the automotive parts.

[0034] See also Figure 1-Figure 8 As another preferred embodiment of the present application, the ejection module includes an ejection column 5, a cooling telescopic cylinder, a locking structure and an adjusting member. The ejection column 5 is movably arranged in the ejection hole 31, and the adjusting member is movably arranged on the support plate 4. The adjusting member is connected to the ejection column 5 on the side away from the support plate 4, and the adjusting member is connected to the driving structure. When the driving structure is working, it controls the operation of the adjusting member and adjusts the position of the ejection column 5 in the unloading box 1. The cooling telescopic cylinder is arranged on the ejection column 5 and has a telescopic structure. The cooling telescopic cylinder is connected to the cooling box 3, and a plurality of exhaust ports 22 are arranged on the cooling telescopic cylinder. The locking structure is arranged on the cooling telescopic cylinder, which is used to monitor the position of the cooling telescopic cylinder and control the locking of the telescopic state of the cooling telescopic cylinder. When the cooling telescopic cylinder contracts, the cold air in the cooling box 3 is controlled to be output from the exhaust port 22.

[0035] In a specific case of the present embodiment, the cooling telescopic cylinder includes an outer cylinder 19 and an inner cylinder 20, the outer cylinder 19 is arranged at one end of the ejection column 5 away from the ejection hole 31, a matching slot 23 is formed in the outer cylinder, the inner cylinder 20 is slidably inserted in the matching slot 23, the inner cylinder 20 is connected to the cooling box 3, the inner cylinder 20 is connected to the adjusting piece, the inner cylinder 20 and the outer cylinder 19 are connected by an elastic piece, and a plurality of exhaust ports 22 are distributed on one side of the outer cylinder 19 close to the ejection column 5.

[0036] Without limitation, the elastic member may be a spring 14, a spring sheet or an elastic steel plate structure. In the present embodiment, the elastic member is preferably a spring 14, and the spring 14 is connected between the outer cylinder 19 and the inner cylinder 20. As for the specific model parameters of the spring 14, the best choice can be made according to the actual situation, and no specific limitation is made here.

[0037] It should be supplemented that the air outlet 22 is arranged obliquely relative to the outer cylinder 19 .

[0038] In another specific case of this embodiment, the positioning member includes a positioning threaded rod 11, a driven gear 9 and a threaded sleeve 17. The positioning threaded rod 11 is movably arranged on the support plate 4, the driven gear 9 is sleeved on the positioning threaded rod 11, and the threaded sleeve 17 is arranged on the inner cylinder 20. One end of the positioning threaded rod 11 is slidably inserted in the threaded sleeve 17 and the two are threadedly matched. When the driving structure is working, it controls the rotation of the driven gear 9.

[0039] Non-restrictive, the driving structure includes a stepper motor 12, a group of power drive arms 10, a first tooth 15 and a second tooth 16, a group of the power drive arms 10 are symmetrically arranged on the discharge box 1, and the discharge box 1 is symmetrically provided with lateral through holes 8 that slide with the power drive arms 10, and a driving gear 13 is movably arranged in the discharge box 1 through a connecting shaft 30, the stepper motor 12 is arranged in the discharge box 1 and its output end is connected to the connecting shaft 30, the number of the first teeth 15 is two groups and the number of the first teeth 15 in each group is several, the first teeth 15 and the driven gear 9 are meshed, the number of the second teeth 16 is several and equidistantly arranged on the power drive arm 10, and the second teeth 16 and the driving gear 13 are meshed.

[0040] It should be noted that the present embodiment is not limited to the above-mentioned method of cooperating between the positioning member and the driving structure to adjust the position of the ejector column 5, and a linear motor or an electric cylinder may also be used instead, which are not listed here one by one.

[0041] After the die-casting of the automobile parts is completed, the controller 2 controls the stepper motor 12 to be powered on and rotated, driving the connecting shaft 30 to rotate, and then driving the driving gear 13 to rotate. Under the meshing action between the driving gear 13 and the second tooth 16, the power driving arm 10 is driven to move along the lateral perforation 8, and then under the meshing action between the first tooth 15 and the driven gear 9, the driven gear 9 and the adjusting threaded rod 11 can be driven to rotate. Under the threaded cooperation between the adjusting threaded rod 11 and the threaded sleeve 17, the driving arm 10 is driven to move along the lateral perforation 8. The threaded sleeve 17, the cooling telescopic cylinder and the ejection column 5 move upward relative to the ejection hole 31, thereby realizing the ejection of the die-casting. When the ejection distance of the die-casting reaches the expected value, the locking structure can be controlled to work, and the locking structure releases the lock between the outer cylinder 19 and the inner cylinder 20. Under the elastic restoring force of the spring 14, the outer cylinder 19 moves relative to the inner cylinder 20 and performs compression work, so that the cold air input into the cooling telescopic cylinder by the cooling box 3 is sprayed toward the die-casting, thereby performing secondary cooling on the unloading box 1.

[0042] See also Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 as well as Figure 8 As another preferred embodiment of the present application, the locking structure includes a limit guide seat 18, a protruding block 29, a limit plug rod 25, a limit hole 21 and a monitoring adjustment member. A group of protruding blocks 29 are symmetrically arranged on the outer cylinder 19. The limit guide seat 18 is a group and is symmetrically arranged in the discharge box 1. The protruding block 29 and the limit guide seat 18 are slidably matched. The limit plug rod 25 is movably arranged on the protruding block 29 and the two are elastically connected. The limit plug rod 25 slides through the outer cylinder 19. The limit hole 21 is arranged on the inner cylinder 20 and is located on the moving path of the limit plug rod 25. The monitoring adjustment member is arranged on the outer cylinder 19 and connected to the limit plug rod 25, which is used to monitor the position of the outer cylinder 19 on the limit guide seat 18 and control the limit plug rod 25 and the limit hole 21 to disengage.

[0043] In this exemplary embodiment, the monitoring and adjusting component includes a resistance moving block 24, a No. 1 hinged joint, a No. 2 hinged joint 2826 and a push arm 27. The resistance moving block 24 is movably arranged on the protruding block 29 and the two are elastically connected. The No. 1 hinged joint is arranged at the end of the limiting plug 25 away from the limiting hole 21, and the No. 2 hinged joint 2826 is arranged on the resistance moving block 24. The resistance moving block 24 is located on the inner side of the limiting guide seat 18, and the No. 1 hinged joint and the No. 2 hinged joint 2826 are movably connected through the push arm 27.

[0044] Under the cooperation between the adjusting threaded rod 11 and the threaded sleeve 17, the adjusting threaded rod 11 can be controlled to drive the ejecting column 5 to move upward, and drive the outer cylinder 19 to move synchronously. When the outer cylinder 19 and the ejecting column 5 move to the expected position, the resistance moving block 24 and the limiting guide seat 18 meet and conflict with each other, driving the resistance moving block 24 to move relative to the protruding block 29, and then driving the second hinged head 2826 to move synchronously. Under the action of the push arm 27, the limiting plug rod 25 is driven to move relative to the protruding block 29, so that the limiting The insert rod 25 is disengaged from the limiting hole 21. At this time, under the action of the elastic restoring force of the spring 14, the outer cylinder 19 can move relative to the inner cylinder 20 to perform a contraction movement, so that the cold air in the outer cylinder 19 and the inner cylinder 20 (delivered by the cooling box 3) can be sprayed from the exhaust port 22 to the die-casting, thereby realizing the second cooling work of the die-casting. As for the resetting work of the outer cylinder 19 and the inner cylinder 20, they can be manually reset later or mechanically reset by using the die-casting machine, and the corresponding method can be used according to the specific situation.

[0045] See also Figure 1-Figure 8 In another embodiment of the present application, a method for ejecting materials for die-casting of automotive parts is applied to the ejecting material device described in the above technical solution. The specific steps of the method are as follows:

[0046] S100: The entire discharge box 1 is fixedly mounted on the die-casting equipment by using the fixing bolts 32, and the die-casting produced by die-casting can be left on the surface of the discharge box 1, and the top material air cooling component is controlled by the controller 2;

[0047] S200: When the ejection air cooling assembly is working, the die casting can be ejected from the surface of the discharge box 1, and when the ejection displacement of the ejection air cooling assembly reaches the expected value, a cold air flow can be sprayed onto the surface of the high-temperature die casting to achieve secondary cooling of the high-temperature die casting.

[0048] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A discharge ejection device for die-casting of automotive parts, comprising a discharge box, a controller, a support plate, a discharge mounting plate and a middle partition plate, wherein the controller is arranged on the discharge box, the support plates are in a group and are symmetrically arranged on both sides of the discharge box, the discharge mounting plates are in two groups and are symmetrically arranged on the discharge box, the middle partition plate is arranged in the discharge box and divides the discharge box into two cavities, the discharge box is symmetrically provided with a plurality of ejection holes, the discharge mounting plate is equidistantly provided with a plurality of fixing bolts, characterized in that: The unloading and ejecting device also includes a cooling box and an ejecting air cooling component, wherein the cooling box is arranged on the unloading box, the ejecting air cooling component is arranged in the unloading box and is communicated with the cooling box, and is used for controlling the ejection and unloading of the die-casting, and when the ejection distance of the die-casting reaches an expected value, the ejecting air cooling component controls the air in the cooling box to spray toward the surface of the die-casting; the ejecting air cooling component includes a driving structure and an ejecting module, wherein the driving structure is arranged on the unloading box, the ejecting modules are in several groups and are symmetrically arranged on the ejecting box, the ejecting modules cooperate with the ejecting holes, the ejecting modules are connected with the driving structure, and when the driving structure works, the ejecting modules are controlled to work and eject the die-casting, and the ejecting module is communicated with the cooling box; the ejecting module includes an ejecting column, a cooling telescopic cylinder, a locking structure and a positioning member, wherein the ejecting column is movably arranged in the ejecting hole, the positioning member is movably arranged on the support plate, and the side of the positioning member away from the support plate and The cooling air outlet is arranged on the cooling air outlet of the cooling air outlet, and the cooling air outlet is arranged on the cooling air outlet of the cooling air outlet.

2. The unloading and ejecting device for die casting of automobile parts according to claim 1, characterized in that: The air outlet is arranged obliquely relative to the outer cylinder.

3. The unloading and ejecting device for die casting of automobile parts according to claim 2, characterized in that: The positioning member includes a positioning threaded rod, a driven gear and a threaded sleeve. The positioning threaded rod is movably arranged on a support plate, the driven gear is sleeved on the positioning threaded rod, and the threaded sleeve is arranged on an inner cylinder. One end of the positioning threaded rod is slidably inserted into the threaded sleeve and the two are threadedly matched. When the driving structure is working, it controls the rotation of the driven gear.

4. The unloading and ejecting device for die casting of automobile parts according to claim 3, characterized in that: The driving structure includes a stepper motor, a group of power drive arms, a first tooth and a second tooth. The first group of power drive arms is symmetrically arranged on a discharge box. The discharge box is symmetrically provided with lateral through holes that slide with the power drive arms. A driving gear is movably arranged in the discharge box through a connecting shaft. The stepper motor is arranged in the discharge box and its output end is connected to the connecting shaft. There are two groups of first teeth and each group has a plurality of first teeth. The first teeth are meshed with the driven gear. There are a plurality of second teeth and they are equidistantly arranged on the power drive arms. The second teeth are meshed with the driving gear.

5. The unloading and ejecting device for die casting of automobile parts according to claim 4, characterized in that: The locking structure includes a limit guide seat, a protruding block, a limit plug rod, a limit hole and a monitoring and adjusting member. A group of protruding blocks are symmetrically arranged on the outer cylinder. The limit guide seats are a group and are symmetrically arranged in the unloading box. The protruding block and the limit guide seat are slidably matched. The limit plug rod is movably arranged on the protruding block and the two are elastically connected. The limit plug rod slides through the outer cylinder. The limit hole is arranged on the inner cylinder and is located on the moving path of the limit plug rod. The monitoring and adjusting member is arranged on the outer cylinder and connected with the limit plug rod, which is used to monitor the position of the outer cylinder on the limit guide seat and control the separation of the limit plug rod and the limit hole.

6. The unloading and ejecting device for die casting of automobile parts according to claim 5, characterized in that: The monitoring positioning component includes a resistance moving block, a No. 1 hinge head, a No. 2 hinge head and a push arm. The resistance moving block is movably arranged on the protruding block and the two are elastically connected. The No. 1 hinge head is arranged at an end of the limiting plug rod away from the limiting hole. The No. 2 hinge head is arranged on the resistance moving block. The resistance moving block is located on the inner side of the limiting guide seat. The No. 1 hinge head and the No. 2 hinge head are movably connected through a push arm.

7. A method for ejecting materials for die-casting of automobile parts, applied to the ejecting material device according to claim 1, characterized in that: The specific steps of the unloading and ejecting method are as follows: S100: The entire discharge box is fixedly installed on the die-casting equipment by means of fixing bolts, and the die-casting parts produced by die-casting are left on the surface of the discharge box, and the top-loading air-cooling assembly is controlled by the controller; S200: When the ejector air cooling assembly is working, the die casting is ejected from the surface of the discharge box, and when the ejection displacement of the ejector air cooling assembly reaches the expected value, a cold air flow is sprayed onto the surface of the high-temperature die casting to achieve secondary cooling of the high-temperature die casting.

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