Injection mold for automobile part machining

Abstract

The invention discloses an injection mold for automobile part machining, and relates to the field of automobile part machining, the injection mold comprises injection molding equipment, an ejection mechanism facilitating demolding of a formed part is arranged in a mold base, the ejection mechanism comprises an ejection rod installed on the inner wall of a movable mold cavity in a sliding mode, and an ejection block and a push block are arranged at the end of the ejection rod; a pneumatic ejection assembly is arranged in the movable mold, and a cooling mechanism used for cooling the movable mold is arranged in the movable mold. According to the injection mold for automobile part machining, the ejection mechanism is arranged in the movable mold, uniform ejection force can be applied to a formed part during mold opening, the problem that demolding is difficult due to the fact that the formed part adheres to the inner wall of a mold cavity is effectively solved, and part damage and the defective rate caused by forced demolding are reduced; the cooling mechanism is arranged in the movable mold, the movable mold can be continuously and efficiently cooled, the plastic melt cooling and curing period is shortened, the injection molding production efficiency is improved, and meanwhile it is guaranteed that the internal stress of parts is uniform, and the dimensional precision is stable.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically to an injection mold for automotive parts processing. Background Technology

[0002] Automotive plastic parts are various components made of plastic materials used in automobiles. They are widely used in body, interior, exterior, and functional structural parts. They are key material components for lightweighting, cost reduction, and environmental protection in modern automobiles. The molding process usually requires injection molds, which can stably inject recycled plastic melt into automotive parts such as bumpers, interior parts, and exterior parts, realizing the resource reuse of plastic waste and balancing production efficiency, part quality, and environmental protection and cost reduction.

[0003] In the prior art, Chinese Patent No. CN222987425U discloses an injection mold for automotive parts, including a fixed mold, a material guiding assembly, and auxiliary components. A moving mold is provided on one side of the fixed mold, and a material guiding assembly is provided at the bottom of the moving mold. Auxiliary components are provided on both the surface and back of the fixed mold. A push plate is provided on the side of the moving mold away from the fixed mold, and a demolding assembly is slidably connected between the push plate and the moving mold. The material guiding assembly includes a fixed base, and the bottom of the moving mold is bolted to the fixed base. A guide plate is rotatably connected between the fixed bases, and both ends of the guide plate are bolted to a rotating shaft. By adding an auxiliary unloading and guiding mechanism, after the automotive parts have completed injection molding, the freely falling injection molded parts are subjected to auxiliary buffering and guiding treatment, improving the stability of the falling recovery and making it less prone to surface damage, thereby improving the performance.

[0004] For example, in the prior art, Chinese patent CN221339332U discloses an injection mold for automotive parts, including a base. Guide rods are installed around the top of the base, and a top plate is fixed at the top of the guide rods. A hydraulic cylinder is installed in the middle of the top plate, and a guide plate is connected to the end of the hydraulic cylinder. An upper mold is installed at the bottom of the guide plate. A lower mold base is opened in the middle of the base. An ejection mechanism is installed at the bottom of the lower mold base, and a burr removal mechanism is installed around the top of the lower mold base. A dust collection mechanism is installed on one side of the interior of the base. Before pre-ejection, the operator needs to start the second drive motor of this injection mold for automotive parts. At this time, four sets of rotating rods distributed around the top of the lower mold base will mesh and link in the corresponding direction according to the bevel gears one and two acting at the ends of each set. In this state, the grinding sleeves installed around the middle of the four sets of rotating rods can perform relatively comprehensive and uniform grinding on the outer surface of the mold gradually ejected by the ejection mechanism, reducing the generation of burrs.

[0005] Based on the above information, existing injection molds for automotive parts processing tend to cause molded parts to adhere to the inner wall of the mold cavity during the demolding process, making demolding difficult. If forced demolding is attempted, it can easily damage the parts and increase the defect rate. Therefore, further improvements are needed. Summary of the Invention

[0006] The purpose of this invention is to provide an injection mold for processing automotive parts, in order to solve the problems mentioned in the background art, where molded parts tend to adhere to the inner wall of the cavity during the demolding process, leading to demolding difficulties; and if forced demolding is attempted, it can easily damage the parts and increase the defect rate.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an injection mold for processing automotive parts, comprising an injection molding machine, wherein the injection molding machine is provided with a fixed mold and a moving mold, and the moving mold is provided with a mold base at its end; a hydraulic cylinder is fixedly installed on the side wall of the injection molding machine, and the output end of the hydraulic cylinder is fixedly connected to the side wall of the mold base; the mold base is provided with an ejection mechanism for demolding the molded parts; the ejection mechanism includes an ejector rod slidably installed on the inner wall of the moving mold cavity, and the ejector rod is provided with an ejection block and a push block at its end; and a first return spring is sleeved on the outer wall of the ejector rod; a pneumatic ejection assembly is provided inside the moving mold; and a cooling mechanism is provided inside the moving mold for cooling the moving mold.

[0008] Preferably, the outer wall of the injection molding equipment is provided with a control module, and the hydraulic cylinder is electrically connected to the control module through a wire. The fixed mold and the moving mold are adapted to each other, and the moving mold is set parallel to the ground in the direction of movement.

[0009] Preferably, the ejector pins are arranged in an array on the inner wall of the cavity of the moving mold, the ejector block is located at the end of the ejector pin near the cavity, and the ejector block is designed as an inverted frustum. In the injection molding state, the outer wall of the ejector block on the side away from the ejector pin is flush with the inner wall of the cavity.

[0010] Preferably, the push block is located at the end of the ejector rod away from the ejector block, and the diameter of the push block is larger than the diameter of the ejector rod. One end of the first return spring abuts against the end of the push block, and the other end of the first return spring abuts against the inside of the moving mold. The moving mold has an ejection groove that is adapted to the ejector rod, the ejector block and the push block.

[0011] Preferably, the pneumatic ejection assembly includes an ejection air chamber formed inside the moving mold, a piston cylinder is fixedly installed on the side wall of the injection molding equipment, a piston rod is slidably installed on the inner wall of the piston cylinder, and a second return spring is sleeved on the outer wall of the piston rod. An air supply pipe and an air inlet valve are provided on the outer wall of the end of the piston cylinder.

[0012] Preferably, the ejector air chamber is connected to the ejector slide, and the inner wall of the ejector slide is provided with an air outlet groove, and the outer wall of the push block is provided with through holes distributed at equal angles. One end of the air outlet groove is connected to the cavity of the moving mold, and the other end of the air outlet groove is connected to the ejector air chamber through the through hole. Two sets of piston cylinders are symmetrically arranged, and the piston cylinders are located between the mold base and the injection molding equipment. The length of the piston rod is less than the distance between the mold base and the injection molding equipment, and the end of the piston rod abuts against the side wall of the mold base in the demolding state. The end of the air supply pipe away from the piston cylinder is connected to the ejector air chamber.

[0013] Preferably, the cooling mechanism includes a cooling cavity formed inside the moving mold, a heat dissipation cavity is provided between the moving mold and the mold base, and a heat dissipation plate is provided on the inner wall of the heat dissipation cavity. The heat dissipation plate is provided with heat dissipation pipes distributed in an S-shape inside. One end of the heat dissipation pipe is connected to the cooling cavity, and the other end of the heat dissipation pipe is connected to a cooling pump. The cooling cavity is connected to the cooling pump through the pipe.

[0014] Preferably, a telescopic airbag is provided between the mold base and the injection molding equipment, and a connecting pipe is provided at the end of the telescopic airbag. A cavity is opened inside the moving mold, and a heat dissipation hole is opened on the inner wall of the heat dissipation cavity. A heat dissipation nozzle is provided at one end of the heat dissipation hole, and the other end of the heat dissipation hole is connected to the cavity. The end of the connecting pipe away from the telescopic airbag is connected to the cavity.

[0015] Preferably, the outer walls on both sides of the heat sink are provided with heat dissipation fins, and the heat dissipation fins are distributed in an array. The heat dissipation vents are distributed at equal intervals on the inner wall of the heat dissipation cavity, and the heat dissipation nozzles are all arranged facing the heat dissipation fins. The heat dissipation cavity is designed with openings at both ends, and the opening ends of the heat dissipation cavity are covered with a filter screen for filtering the air entering the heat dissipation cavity.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The injection mold for processing automotive parts, by setting an ejection mechanism consisting of ejector pins, ejector blocks, push blocks and a first return spring inside the moving mold, can apply a uniform mechanical ejection force to the molded parts after the mold opens, effectively solving the problem of difficult demolding caused by the molded parts adhering to the inner wall of the cavity, and reducing the damage to parts and the defect rate caused by forced demolding.

[0017] 2. By setting up a pneumatic ejection assembly consisting of an ejection air chamber, piston cylinder, piston rod and air supply pipe, high-pressure gas is generated by the movement of the mold base and the compression of the piston rod. This gas, together with the air outlet groove and through hole, forms an air knife to assist in demolding. At the same time as the ejector block is ejected, air is blown out from the gap between the part and the cavity to separate the parts, further improving the smoothness and stability of demolding.

[0018] 3. The ejector block adopts an inverted frustum design and is flush with the inner wall of the cavity during injection molding. This ensures the integrity of the cavity surface and does not affect the injection molding accuracy and surface quality. It also forms a stable support surface during ejection, avoiding stress concentration during ejection that could lead to part deformation or cracking.

[0019] 4. By setting up a cooling mechanism consisting of a cooling cavity, a heat dissipation cavity, a heat dissipation plate, and an S-shaped heat dissipation pipe inside the moving mold, the moving mold can be continuously and efficiently cooled down, shortening the cooling and solidification cycle of the plastic melt, improving injection molding production efficiency, and ensuring uniform internal stress and stable dimensional accuracy of the parts.

[0020] 5. By setting telescopic airbags, connecting pipes, heat dissipation vents and heat dissipation nozzles between the mold base and the injection molding equipment, the airbags expand and contract during the mold opening and closing process to achieve airflow circulation and purging. Combined with arrayed heat dissipation fins, the heat dissipation effect is enhanced, further improving cooling efficiency and keeping the inside of the heat dissipation cavity clean, thus extending the service life of the mold. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mold base and mold holder structure of the present invention; Figure 3 This is a schematic diagram of the fixed mold structure of the present invention; Figure 4 This is a schematic diagram of the ejection mechanism of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the fixed mold of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the cross-sectional structure of the piston cylinder of the present invention; Figure 8 This is a schematic diagram of the cooling mechanism of the present invention; Figure 9 This is a schematic diagram of the heat dissipation cavity structure of the present invention; Figure 10 This is a schematic diagram of the cross-sectional structure of the heat sink of the present invention.

[0022] In the diagram: 1. Injection molding equipment; 2. Fixed mold; 3. Moving mold; 4. Mold base; 5. Hydraulic cylinder; 6. Ejector rod; 7. Ejector block; 8. Push block; 9. First return spring; 10. Ejection groove; 11. Ejection air chamber; 12. Piston cylinder; 13. Piston rod; 14. Second return spring; 15. Air supply pipe; 16. Air inlet valve; 17. Air outlet groove; 18. Through hole; 19. Cooling chamber; 20. Heat dissipation chamber; 21. Heat dissipation plate; 22. Heat dissipation pipe; 23. Telescopic airbag; 24. Connecting pipe; 25. Cavity; 26. Heat dissipation vent; 27. Heat dissipation nozzle; 28. Heat dissipation fins; 29. ​​Filter screen. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figures 1-9 The present invention provides the following technical solution: an injection mold for processing automotive parts, including an injection molding equipment 1, a fixed mold 2 and a moving mold 3 inside the injection molding equipment 1, and a mold base 4 at the end of the moving mold 3, a hydraulic cylinder 5 fixedly installed on the side wall of the injection molding equipment 1, and the output end of the hydraulic cylinder 5 fixedly connected to the side wall of the mold base 4, an ejection mechanism for demolding the molded parts inside the mold base 4, the ejection mechanism including an ejector rod 6 slidably installed on the inner wall of the cavity of the moving mold 3, and an ejector block 7 and a push block 8 at the end of the ejector rod 6, and a first return spring 9 sleeved on the outer wall of the ejector rod 6, and a pneumatic ejection assembly inside the moving mold 3.

[0025] like Figures 1-8 As shown, the injection molding equipment 1 has a control module on its outer wall, and the hydraulic cylinder 5 is electrically connected to the control module via a wire. The fixed mold 2 and the moving mold 3 are adapted to each other, and the moving direction of the moving mold 3 is parallel to the ground. The ejector pins 6 are arranged in an array on the inner wall of the cavity of the moving mold 3. The ejector block 7 is located at the end of the ejector pin 6 near the cavity, and the ejector block 7 is designed as an inverted frustum. In the injection state, the outer wall of the ejector block 7 away from the ejector pin 6 is flush with the inner wall of the cavity. The push block 8 is located at the end of the ejector pin 6 away from the ejector block 7, and the diameter of the push block 8 is larger than the diameter of the ejector pin 6. One end of the first return spring 9 abuts against the end of the push block 8, and the other end of the first return spring 9 abuts against the inside of the moving mold 3. The moving mold 3 has an ejection groove 10 adapted to the ejector pin 6, the ejector block 7 and the push block 8.

[0026] like Figures 1-9As shown, the pneumatic ejection assembly includes an ejection air chamber 11 formed inside the moving mold 3. A piston cylinder 12 is fixedly installed on the side wall of the injection molding machine 1, and a piston rod 13 is slidably installed on the inner wall of the piston cylinder 12. A second return spring 14 is sleeved on the outer wall of the piston rod 13. An air supply pipe 15 and an air inlet valve 16 are provided on the outer wall of the end of the piston cylinder 12. The ejection air chamber 11 is connected to the ejection slide 10, and an air outlet groove 17 is formed on the inner wall of the ejection slide 10. An equal-angle air outlet groove 17 is formed on the outer wall of the push block 8. The distributed through holes 18, one end of the air outlet groove 17 is connected to the cavity of the moving mold 3, and the other end of the air outlet groove 17 is connected to the ejection air chamber 11 through the through holes 18. Two sets of piston cylinders 12 are symmetrically arranged, and the piston cylinders 12 are located between the mold base 4 and the injection molding equipment 1. The length of the piston rod 13 is less than the distance between the mold base 4 and the injection molding equipment 1, and the end of the piston rod 13 abuts against the side wall of the mold base 4 in the demolding state. The end of the air supply pipe 15 away from the piston cylinder 12 is connected to the ejection air chamber 11.

[0027] The ejection mechanism adopts a combined mechanical push and pneumatic assistance demolding design, requiring no additional power drive throughout the process. It achieves automated operation based on the mold opening action. After injection molding, the control module activates the hydraulic cylinder 5, driving the mold base 4 to move the moving mold 3 away from the fixed mold 2, completing the mold opening action. When the mold base 4 moves to the designated position, its sidewall abuts against the end of the piston rod 13 on the injection molding equipment 1, continuously squeezing the piston rod 13, causing it to slide along the inner wall of the piston cylinder 12, compressing the gas inside the piston cylinder 12. At this time, the second return spring 14 is in a contracted state, and the air inlet valve 16 is closed. High-pressure gas is delivered to the ejection air chamber 11 inside the moving mold 3 through the air supply pipe 15. The ejection air chamber 11 is connected to the ejection slide 10. After the high-pressure gas enters the ejection slide 10, it applies axial thrust to the push block 8, pushing the ejector rod 6 to slide along the ejection slide 10 towards the cavity. The inverted frustum-shaped ejector block 7 at the end of the ejector rod 6... The pusher 8 extends and applies a uniform mechanical pushing force to the molded part, lifting it from the inner wall of the cavity. On the other hand, the air flows through the through holes 18 evenly distributed on the outer wall of the pusher 8 to the air outlet groove 17, and finally sprays out from the port connecting the air outlet groove 17 and the cavity, forming an annular air knife to blow away the contact surface between the molded part and the inner wall of the cavity, destroying the adsorption force between them and creating a separation gap. After demolding, the hydraulic cylinder 5 resets the mold base 4, the piston rod 13 loses the squeezing force, and resets under the elastic restoring force of the second reset spring 14. The piston cylinder 12 draws in outside air through the air inlet valve 16. The end of the air inlet valve 16 is equipped with a filter screen 29 to filter the air entering the piston cylinder 12, preparing for the next demolding. At the same time, the pusher 6 drives the ejector block 7 to retract into the ejector groove 10 under the elastic restoring force of the first reset spring 9. The outer wall of the ejector block 7 away from the pusher 6 is flush with the inner wall of the cavity again, ensuring the surface accuracy of subsequent injection molding.

[0028] Example 2: Please refer to Figures 1-10 Based on Embodiment 1, a cooling mechanism is also disclosed, the specific structure of which is as follows: A cooling mechanism for cooling the moving mold 3 is provided inside the moving mold 3. The cooling mechanism includes a cooling cavity 19 opened inside the moving mold 3, a heat dissipation cavity 20 between the moving mold 3 and the mold base 4, and a heat dissipation plate 21 on the inner wall of the heat dissipation cavity 20. The heat dissipation plate 21 has S-shaped heat dissipation pipes 22 inside, one end of which is connected to the cooling cavity 19, and the other end of which is connected to a cooling pump. The cooling cavity 19 is connected to the cooling pump through pipes. A telescopic airbag 23 is provided between the mold base 4 and the injection molding equipment 1, and a connecting pipe is provided at the end of the telescopic airbag 23. 24. The moving mold 3 has a cavity 25 inside, and the inner wall of the heat dissipation cavity 20 has heat dissipation vents 26. One end of the heat dissipation vent 26 is provided with a heat dissipation nozzle 27, and the other end of the heat dissipation vent 26 is connected to the cavity 25. The end of the connecting pipe 24 away from the telescopic airbag 23 is connected to the cavity 25. The outer walls of both sides of the heat dissipation plate 21 are provided with heat dissipation fins 28, and the heat dissipation fins 28 are arranged in an array. The heat dissipation vents 26 are evenly distributed on the inner wall of the heat dissipation cavity 20, and the heat dissipation nozzles 27 are all set towards the heat dissipation fins 28. The heat dissipation cavity 20 is designed with open ends, and the open ends of the heat dissipation cavity 20 are covered with a filter screen 29 for filtering the air entering the heat dissipation cavity 20.

[0029] The cooling mechanism employs a dual cooling design of liquid cooling and air cooling to achieve efficient and continuous cooling of the moving mold 3. Simultaneously, the mold opening and closing action enhances the heat dissipation effect. During injection molding, the control module synchronously starts an external cooling pump, which delivers coolant to the cooling chamber 19 inside the moving mold 3. The coolant circulates within the cooling chamber 19, rapidly absorbing the heat transferred from the cavity of the moving mold 3, reducing the cavity temperature, and accelerating the cooling and solidification of the plastic melt. Simultaneously, the coolant flows through pipes into the S-shaped heat dissipation pipes 22 inside the heat sink 21. The S-shaped structure extends the flow path of the coolant, increasing the contact area with the heat sink 21 and further improving heat exchange efficiency. The array-type heat dissipation fins 28 on both sides of the outer wall of the heat sink 21 quickly dissipate the heat transferred by the coolant into the heat dissipation chamber 20. Meanwhile, during mold opening and closing, the movement of the mold base 4 causes the telescopic airbag 23 to repeatedly expand and contract. When the mold base 4 moves away from the injection molding equipment 1, the telescopic airbag 23 expands, drawing in air from the outside through the connecting pipe 24. The air then flows through the opening end of the heat dissipation chamber 20. After being filtered by the filter screen 29, the air enters the heat dissipation cavity 20, where heat dissipation occurs for the first time. When the mold base 4 approaches the injection molding equipment 1, the telescopic airbag 23 is compressed, and the internal air is transported through the connecting pipe 24 to the cavity 25 inside the moving mold 3. Then, it is transported through the heat dissipation air holes 26 evenly distributed on the inner wall of the heat dissipation cavity 20 to the heat dissipation nozzles 27. The heat dissipation nozzles 27 are all set facing the heat dissipation fins 28. The airflow blows the heat dissipation fins 28, accelerates the air circulation inside the heat dissipation cavity 20, and quickly removes the heat from the surface of the heat dissipation fins 28, where heat dissipation occurs for the second time. Thus, air cooling is achieved at the same time as the mold opens and closes. The cooled coolant is recovered and cooled by the cooling pump and then recycled. The hot air inside the heat dissipation cavity 20 is discharged from the opening end, forming a closed-loop cooling system of coolant circulation cooling, heat transfer from the heat dissipation fins 28, and airflow purging heat dissipation. This shortens the cooling and solidification cycle of the plastic melt and ensures uniform internal stress of the molded parts. At the same time, the filter screen 29 can prevent dust and impurities from entering the heat dissipation cavity 20, avoiding affecting the heat dissipation effect and the service life of the mold.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An injection mold for processing automotive parts, comprising an injection molding machine (1), wherein the injection molding machine (1) is provided with a fixed mold (2) and a moving mold (3), and a mold base (4) is provided at the end of the moving mold (3), wherein a hydraulic cylinder (5) is fixedly installed on the side wall of the injection molding machine (1), and the output end of the hydraulic cylinder (5) is fixedly connected to the side wall of the mold base (4), characterized in that: The mold base (4) is provided with an ejection mechanism to facilitate demolding of the molded parts. The ejection mechanism includes an ejector rod (6) that is slidably installed on the inner wall of the cavity of the moving mold (3). The ejector rod (6) is provided with an ejector block (7) and a push block (8) at its end. A first return spring (9) is sleeved on the outer wall of the ejector rod (6). The moving mold (3) is provided with a pneumatic ejection assembly. The moving mold (3) is provided with a cooling mechanism for cooling down the moving mold (3).

2. The injection mold for processing automotive parts according to claim 1, characterized in that: The injection molding equipment (1) has a control module on its outer wall, and the hydraulic cylinder (5) is electrically connected to the control module through a wire. The fixed mold (2) is adapted to the moving mold (3), and the moving direction of the moving mold (3) is set parallel to the ground.

3. The injection mold for processing automotive parts according to claim 1, characterized in that: The ejector pins (6) are arranged in an array on the inner wall of the cavity of the moving mold (3). The ejector block (7) is located at one end of the ejector pin (6) near the cavity. The ejector block (7) is designed as an inverted frustum. In the injection molding state, the outer wall of the ejector block (7) on the side away from the ejector pin (6) is flush with the inner wall of the cavity.

4. The injection mold for processing automotive parts according to claim 1, characterized in that: The push block (8) is located at the end of the push rod (6) away from the ejector block (7), and the diameter of the push block (8) is larger than the diameter of the push rod (6). One end of the first reset spring (9) abuts against the end of the push block (8), and the other end of the first reset spring (9) abuts against the inside of the moving mold (3). The moving mold (3) has an ejection groove (10) that is compatible with the push rod (6), the ejector block (7) and the push block (8).

5. The injection mold for processing automotive parts according to claim 1, characterized in that: The pneumatic ejection assembly includes an ejection air chamber (11) opened inside the moving mold (3), a piston cylinder (12) is fixedly installed on the side wall of the injection molding equipment (1), and a piston rod (13) is slidably installed on the inner wall of the piston cylinder (12), and a second return spring (14) is sleeved on the outer wall of the piston rod (13). An air supply pipe (15) and an air inlet valve (16) are provided on the outer wall of the end of the piston cylinder (12).

6. The injection mold for processing automotive parts according to claim 5, characterized in that: The ejector air chamber (11) is connected to the ejector slide (10), and the inner wall of the ejector slide (10) is provided with an air outlet groove (17), and the outer wall of the push block (8) is provided with through holes (18) distributed at equal angles. One end of the air outlet groove (17) is connected to the cavity of the moving mold (3), and the other end of the air outlet groove (17) is connected to the ejector air chamber (11) through the through hole (18). Two sets of piston cylinders (12) are symmetrically arranged, and the piston cylinders (12) are located between the mold base (4) and the injection molding equipment (1). The length of the piston rod (13) is less than the distance between the mold base (4) and the injection molding equipment (1), and the end of the piston rod (13) abuts against the side wall of the mold base (4) in the demolding state. The end of the air supply pipe (15) away from the piston cylinder (12) is connected to the ejector air chamber (11).

7. The injection mold for processing automotive parts according to claim 1, characterized in that: The cooling mechanism includes a cooling cavity (19) inside the moving mold (3), a heat dissipation cavity (20) between the moving mold (3) and the mold base (4), and a heat dissipation plate (21) is provided on the inner wall of the heat dissipation cavity (20), and a heat dissipation pipe (22) distributed in an S-shape is provided inside the heat dissipation plate (21). One end of the heat dissipation pipe (22) is connected to the cooling cavity (19), and the other end of the heat dissipation pipe (22) is connected to a cooling pump. The cooling cavity (19) is connected to a cooling pump through the pipe.

8. The injection mold for processing automotive parts according to claim 7, characterized in that: A telescopic airbag (23) is provided between the mold base (4) and the injection molding equipment (1), and a connecting pipe (24) is provided at the end of the telescopic airbag (23). A cavity (25) is provided inside the moving mold (3). A heat dissipation hole (26) is provided on the inner wall of the heat dissipation cavity (20), and a heat dissipation nozzle (27) is provided at one end of the heat dissipation hole (26). The other end of the heat dissipation hole (26) is connected to the cavity (25). The end of the connecting pipe (24) away from the telescopic airbag (23) is connected to the cavity (25).

9. The injection mold for processing automotive parts according to claim 7, characterized in that: The heat sink (21) has heat sink fins (28) on both sides of its outer wall, and the heat sink fins (28) are arranged in an array. The heat sink vents (26) are evenly spaced on the inner wall of the heat sink cavity (20), and the heat sink nozzles (27) are all arranged facing the heat sink fins (28). The heat sink cavity (20) has an open design at both ends, and the open end of the heat sink cavity (20) is covered with a filter screen (29) for filtering the air entering the heat sink cavity (20).

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