Injection molding mold for automobile parts

Abstract

The invention relates to the technical field of molds, and discloses an automobile part injection molding mold which comprises a bottom plate and a bearing plate, in the automobile part injection molding mold, a demolding assembly solves the problem that an existing injection mold is difficult to demold, a connecting rod pushes a sliding plate to extrude an air bag for exhausting, and gas jacks up a top cover and is exhausted from a gap between an exhaust column and the top cover; meanwhile, the toothed plate pushes the mounting box to rotate, and the knocking block on the mounting box synchronously knocks and vibrates the bottom of the mold base, so that the surface damage of the injection molding part caused by direct jacking of the ejector rod is avoided, the demolding convenience of the injection molding part is improved, and meanwhile, the quality of the injection molding part is further improved; the spraying assembly solves the problem that an existing injection mold release agent is not evenly sprayed, a bearing plate moves downwards to push an air cylinder to generate gas, the gas pushes a push plate in a spraying box to automatically and evenly spray the release agent in the spraying box to the outer wall of a mold core and the inner wall of a mold base, manual coating of the release agent is avoided, and spraying of the release agent is more even.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and specifically to an injection molding mold for automobile parts. Background Art

[0002] Injection molding, also known as injection mold molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, and the ability to form parts with complex shapes. Injection molding is suitable for molding processing fields such as mass production and products with complex shapes. Among them, in the production process of automobile parts, injection molds are also widely used.

[0003] Existing injection molds lack the function of automatically spraying mold release agent and can only rely on manual coating. However, manual coating easily leads to uneven distribution of the mold release agent. When the mold is demolded, the injection molded part may adhere to the mold due to insufficient spraying of the mold release agent, resulting in difficult demolding. In addition, when existing injection molds are demolded, generally only ejector rods are used to demold the injection molded part. If the jacking force of the ejector rod is insufficient, it will lead to difficult demolding. If the jacking force is too large, it will cause damage to the surface of the injection molded part and reduce the quality of the injection molded part. Summary of the Invention

[0004] (I) Technical Problems to be Solved In view of the deficiencies of the prior art, the present invention provides an injection molding mold for automobile parts, which solves the problems of uneven spraying of the existing mold release agent and difficult demolding.

[0005] (II) Technical Solutions To achieve the above objectives, the present invention is realized through the following technical solutions: An injection molding mold for automobile parts, including a bottom plate and a bearing plate: A demolding assembly, including a guide rail fixedly connected to the upper surface of the bottom plate. A toothed plate is slidably connected in the guide rail. Two sliding grooves are symmetrically opened on the bottom plate. A sliding seat is slidably connected in the sliding groove. A shaft rod is rotatably connected to the upper surface of the bottom plate. Two mounting boxes are symmetrically installed on the outer wall of the shaft rod and are fixedly connected to the shaft rod. A plurality of knocking blocks are evenly and slidably connected to the arc-shaped end of the mounting box. One end of the sliding seat close to the shaft rod is symmetrically and fixedly connected with a connecting rod. Two mounting grooves are symmetrically opened on the bottom plate. A sliding plate is slidably connected in the mounting groove. An air bag is fixedly connected to the end of the sliding plate away from the connecting rod. A spur gear is fixedly connected to the outer wall of the shaft rod, and the teeth of the spur gear mesh with the teeth of the toothed plate; A spraying assembly, including two cylinders symmetrically installed on the upper surface of the bottom plate. A vertical plate is fixedly connected to one end of the sliding seat close to the bearing plate. A spraying box is fixedly connected to the end of the vertical plate away from the bottom plate. A push plate is slidably connected in the spraying box.

[0006] Preferably, two lifting columns are symmetrically and fixedly connected to the upper surface of the bottom plate. Lifting grooves are formed in the lifting columns, and lifting rods are slidably connected in the lifting grooves.

[0007] Preferably, two guiding columns are symmetrically and fixedly connected to the upper surface of the bottom plate. A lifting plate is slidably connected to the outer walls of the two guiding columns. A plurality of ejector rods are symmetrically and fixedly connected to one end of the lifting plate away from the bottom plate.

[0008] Preferably, one end of the lifting rod close to the lifting plate is fixedly connected with a lower pressing plate. Two optical rods are symmetrically and fixedly connected to one end of the lower pressing plate close to the bottom plate, and the optical rods are adapted to the lifting plate.

[0009] Preferably, hinge plates are rotatably connected to both ends of the bearing plate. One end of the hinge plate away from the bearing plate is rotatably connected to the spraying box.

[0010] Preferably, a storage box is fixedly connected to one end of the bearing plate away from the bottom plate. Water pipes are fixedly connected to both ends of the storage box. The spraying box and the storage box are communicated through the water pipes.

[0011] Preferably, a pressing plate is slidably connected to the inner wall of the air cylinder. One end of the pressing plate close to the bearing plate is fixedly connected with a sliding rod, and the sliding rod is fixedly connected to the vertical plate. An air pipe is fixedly connected to the air cylinder. The spraying box and the air cylinder are communicated through the air pipe.

[0012] Preferably, a mold base is fixedly connected to the upper surface of the bottom plate. A plurality of exhaust columns are evenly installed in the mold base, and the plurality of exhaust columns are slidably connected to the mold base. A jacking groove is formed in the exhaust column, and a sliding frame is slidably connected in the jacking groove. One end of the exhaust column close to the bottom plate is fixedly connected with an air bag.

[0013] Preferably, a top cover is fixedly connected to one end of the sliding frame away from the air bag. A fixing frame is fixedly connected to one end of the top cover close to the sliding frame. A moving rod is slidably connected to the fixing frame. A blocking block is fixedly connected to one end of the moving rod close to the top cover.

[0014] Preferably, a mold core is fixedly connected to one end of the bearing plate close to the bottom plate, and the mold core is adapted to the mold base.

[0015] In summary, the technical effects and advantages of the present invention: 1. In the present invention, the problem of difficult demolding of existing injection molds is solved by the demolding assembly provided. The connecting rod pushes the sliding plate to extrude the airbag to exhaust air. The gas jacks up the top cover and discharges from the gap between the exhaust column and the top cover, creating a gap between the injection molded part and the inner wall of the mold. At the same time, the toothed plate pushes the installation box to rotate, and the knocking block on the installation box synchronously knocks and vibrates the bottom of the mold base, avoiding damage to the surface of the injection molded part caused by direct jacking of the ejector rod, improving the convenience of demolding the injection molded part, and further improving the quality of the injection molded part.

[0016] 2. In the present invention, the problem of uneven spraying of mold release agent in existing injection molds is solved by the spraying assembly provided. The bearing plate moves downward to push the cylinder to generate gas, and the gas pushes the push plate in the spraying box to automatically spray the mold release agent in the spraying box evenly on the outer wall of the mold core and the inner wall of the mold base, avoiding manual coating of the mold release agent and making the spraying of the mold release agent more uniform. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of an injection molding mold for automotive parts according to the present invention; Figure 2 is a schematic diagram of the structure at the lifting plate of an injection molding mold for automotive parts according to the present invention; Figure 3 is a schematic cross-sectional view of the spraying box of an injection molding mold for automotive parts according to the present invention; Figure 4 is a schematic cross-sectional view of the bottom plate of an injection molding mold for automotive parts according to the present invention; Figure 5 is a schematic cross-sectional view of the installation box of an injection molding mold for automotive parts according to the present invention; Figure 6 is a schematic cross-sectional view of the mold base of an injection molding mold for automotive parts according to the present invention; Figure 7 is in an injection molding mold for automotive parts according to the present invention Figure 6 The enlarged schematic view of part A.

[0018] In the figure: 1, bottom plate; 2, lifting column; 3, bearing plate; 4, storage box; 5, cylinder; 6, die holder; 7, lifting rod; 8, lifting plate; 9, shaft rod; 10, ejector rod; 11, lifting groove; 12, lower pressing plate; 13, optical rod; 14, die core; 15, vertical plate; 16, hinge plate; 17, water pipe; 18, spraying box; 19, push plate; 20, air pipe; 21, extrusion plate; 22, plug block; 23, slide bar; 24, guide post; 25, sliding groove; 26, slide seat; 27, connecting rod; 28, sliding plate; 29, air bag; 30, exhaust column; 31, spur gear; 32, mounting box; 33, knocking block; 34, guide rail; 35, toothed plate; 36, mounting groove; 37, jacking groove; 38, sliding frame; 39, top cover; 40, moving rod; 41, fixed frame. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Refer to Figures 1-7, An injection molding die for automotive parts shown, comprising a bottom plate 1 and a bearing plate 3, a demolding assembly, including a guide rail 34 fixedly connected to the upper surface of the bottom plate 1, a toothed plate 35 slidably connected in the guide rail 34, two sliding grooves 25 symmetrically formed on the bottom plate 1, a sliding seat 26 slidably connected in the sliding grooves 25, a shaft rod 9 rotatably connected to the upper surface of the bottom plate 1, two mounting boxes 32 symmetrically installed on the outer wall of the shaft rod 9 and fixedly connected to the shaft rod 9, a plurality of knocking blocks 33 slidably connected to the arc-shaped ends of the mounting boxes 32 evenly, a connecting rod 27 symmetrically fixedly connected to one end of the sliding seat 26 close to the shaft rod 9, two mounting grooves 36 symmetrically formed on the bottom plate 1, a sliding plate 28 slidably connected in the mounting grooves 36, an airbag 29 fixedly connected to one end of the sliding plate 28 away from the connecting rod 27, a spur gear 31 fixedly connected to the outer wall of the shaft rod 9, and the teeth of the spur gear 31 meshing with the teeth of the toothed plate 35; two guide columns 24 symmetrically fixedly connected to the upper surface of the bottom plate 1, a lifting plate 8 slidably connected to the outer walls of the two guide columns 24 together, a plurality of ejector rods 10 symmetrically fixedly connected to one end of the lifting plate 8 away from the bottom plate 1, a lower pressing plate 12 fixedly connected to one end of the lifting rod 7 close to the lifting plate 8, two optical rods 13 symmetrically fixedly connected to one end of the lower pressing plate 12 close to the bottom plate 1 and adapted to the lifting plate 8, a mold base 6 fixedly connected to the upper surface of the bottom plate 1, a plurality of exhaust columns 30 evenly installed in the mold base 6 and slidably connected to the mold base 6, a jacking groove 37 formed in the exhaust column 30, a sliding frame 38 slidably connected in the jacking groove 37, the exhaust column 30 being fixedly connected to the airbag 29 at one end close to the bottom plate 1, a top cover 39 fixedly connected to one end of the sliding frame 38 away from the airbag 29, a fixing frame 41 fixedly connected to one end of the top cover 39 close to the sliding frame 38, a moving rod 40 slidably connected to the fixing frame 41, a blocking block 22 fixedly connected to one end of the moving rod 40 close to the top cover 39, a mold core 14 fixedly connected to one end of the bearing plate 3 close to the bottom plate 1 and adapted to the mold base 6.

[0021] In order to improve the convenience of demolding and the quality of injection molded parts, the present invention is provided with a demolding assembly. By the connecting rod 27 pushing the sliding plate 28 to squeeze the airbag 29, the gas jacks up the top cover 39 and discharges from the gap between the exhaust column 30 and the top cover 39, causing a gap to be generated between the injection molded part and the inner wall of the mold. At the same time, the toothed plate 35 pushes the mounting box 32 to rotate, and the knocking blocks 33 on the mounting box 32 synchronously knock and vibrate the bottom of the mold base 6, avoiding damage to the surface of the injection molded part caused by the direct jacking of the ejector rod 10, improving the convenience of demolding of the injection molded part, and further improving the quality of the injection molded part.

[0022] Specifically, first, when the injection molding is completed and the carrier plate 3 moves upward, at this time, the sliding seat 26 moves along the sliding groove 25 under the push of the spring in the sliding groove 25. At the same time, the connecting rod 27 on the sliding seat 26 pushes the sliding plate 28 to slide in the installation groove 36. During the movement of the sliding plate 28, the airbag 29 is squeezed, causing the airbag 29 to exhaust. It should be noted that both ends of the airbag 29 are fixedly connected to the sliding plate 28 and the inner wall of the installation groove 36 respectively, and the airbag 29 will not affect the fixed connection with the exhaust column 30 due to contraction. The gas in the airbag 29 is discharged into the exhaust column 30, and the top cover 39 moves upward under the push of the gas. The gas in the exhaust column 30 is discharged through the gap between the top cover 39 and the exhaust column 30, creating a gap between the injection molded part and the inner wall of the mold base 6. At the same time, the toothed plate 35 fixedly connected to one of the sliding seats 26 slides along the guide rail 34 under the push of the sliding seat 26. The toothed plate 35 drives the synchronous rotation of the spur gear 31 and the shaft rod 9. The knocking block 33 slidably connected to the installation box 32 was previously squeezed by the lifting plate 8 and contracted. When the knocking block 33 rotates to the bottom of the mold base 6, the squeezing state is released. The spring installed on the knocking block 33 pushes the knocking block 33 to move in the reverse direction and knock the bottom of the mold base 6. Through the gas in the exhaust column 30 and the knocking and vibration of the knocking block 33, a gap is generated in advance between the injection molded part and the mold base 6, preventing the ejector rod 10 from directly jacking up and damaging the surface of the injection molded part. As the carrier plate 3 continues to rise, the lifting rod 7 moves upward, causing the lifting plate 8 to move upward synchronously. The ejector rod 10 on the lifting plate 8 ejects the injection molded part that has been separated from the inner wall of the mold base 6 from the mold base 6, completing the demolding of the injection molded part.

[0023] Secondly, when injection molding is required, the carrier plate 3 and the mold core 14 move downward synchronously. The lifting rod 7 moves downward, causing the lifting plate 8 to move downward synchronously along the guide post 24. At this time, the sliding seat 26 moves in the reverse direction along the sliding groove 25. At this time, the sliding plate 28 releases the extrusion of the airbag 29 and simultaneously pulls the airbag 29 to move in the reverse direction. At this time, the top cover 39 moves in the reverse direction along the lifting groove 37 without gas jacking, causing the top cover 39 to fit tightly with the exhaust column 30. The airbag 29 is in the air intake state. At this time, the moving rod 40 is released from the clamping state with the fixed frame 41 and moves along the fixed frame 41, causing the plug block 22 to move downward to allow air intake into the exhaust column 30, and the airbag 29 gradually returns to its original gas-filled state. It should be noted that the elastic force of the spring sleeved on the moving rod 40 is less than the intake negative pressure when the airbag 29 intakes air. When the airbag 29 returns to its original state, the electric push rod on the moving rod 40 will, under the control of the controller, extend the clamping rod to be clamped with the fixed frame 41. The controller and the electric push rod are both prior arts and will not be elaborated here. When the mold core 14 descends to close the mold with the mold base 6, the lifting plate 8 descends to the lowest position. At this time, the lifting plate 8 does not contact the toothed plate 35.

[0024] Reference Figures 1-7, The spraying assembly includes two cylinders 5 symmetrically installed on the upper surface of the bottom plate 1. One end of the sliding seat 26 close to the bearing plate 3 is fixedly connected with a vertical plate 15. One end of the vertical plate 15 away from the bottom plate 1 is fixedly connected with a spraying box 18. A push plate 19 is slidably connected in the spraying box 18. Two lifting columns 2 are symmetrically and fixedly connected to the upper surface of the bottom plate 1. Lifting grooves 11 are formed in the lifting columns 2. Lifting rods 7 are slidably connected in the lifting grooves 11. Hinged plates 16 are rotatably connected to both ends of the bearing plate 3. One end of the hinged plate 16 away from the bearing plate 3 is rotatably connected to the spraying box 18. One end of the bearing plate 3 away from the bottom plate 1 is fixedly connected with a storage box 4. Water pipes 17 are fixedly connected to both ends of the storage box 4. The spraying box 18 is communicated with the storage box 4 through the water pipes 17. An extrusion plate 21 is slidably connected to the inner wall of the cylinder 5. One end of the extrusion plate 21 close to the bearing plate 3 is fixedly connected with a sliding rod 23, and the sliding rod 23 is fixedly connected with the vertical plate 15. An air pipe 20 is fixedly connected to the cylinder 5. The spraying box 18 is communicated with the cylinder 5 through the air pipe 20.

[0025] To improve the uniformity of the release agent coating, the present invention provides a spraying assembly. By the downward movement of the bearing plate 3, the cylinder 5 generates gas, and the gas pushes the push plate 19 in the spraying box 18 to automatically spray the release agent in the spraying box 18 evenly on the outer wall of the mold core 14 and the inner wall of the mold base 6, avoiding manual coating of the release agent and making the spraying of the release agent more uniform.

[0026] Specifically, first, when the bearing plate 3 moves upward, at this time, the sliding seat 26 moves along the sliding groove 25 under the pulling of the hinged plate 16 and gradually approaches the mold base 6. At this time, the vertical plate 15 pulls the extrusion plate 21 to move, and the cylinder 5 is in the air intake state. At this time, the air pipe 20 sucks air from the spraying box 18. At this time, the push plate 19 moves along the spraying box 18 under the elastic force of the spring arranged thereon. At the same time, the water pipe 17 arranged on the other side of the push plate 19 extracts the release agent from the storage box 4 and stores it in the spraying box 18. It should be noted that one-way valves are installed in the nozzles arranged on the spraying box 18. When the cylinder 5 is in the air intake state and the spraying box 18 sucks in the release agent, the nozzles are in the closed state, and the release agent will not flow out of the nozzles either.

[0027] Secondly, when the bearing plate 3 moves downward, at this time, the sliding seat 26 moves reversely along the sliding groove 25 under the push of the hinged plate 16. At this time, the vertical plate 15 pushes the extrusion plate 21 to move reversely in the cylinder 5. At this time, the cylinder 5 is in the air outlet state, and the air pipe 20 injects gas into the spraying box 18. As the pressure on the nozzle side gradually increases, the one-way valve in the nozzle gradually opens. Since the one-way valve is a prior art, it will not be elaborated here in detail. Under the extrusion of the gas input by the cylinder 5, the push plate 19 sprays the release agent pre-stored in the spraying box 18 from the nozzle, and evenly coats the outer wall of the mold core 14 and the inner wall of the mold base 6. At the same time, as the bearing plate 3 moves downward, the spraying box 18 gradually moves away from the mold base 6 to avoid interfering with the injection molding of the mold.

[0028] Working principle of the present invention: When injection molding is required, the carrier plate 3 and the mold core 14 move downward synchronously. The lifting rod 7 moves downward, causing the lifting plate 8 to move downward synchronously along the guide column 24. At this time, the sliding seat 26 moves in the opposite direction along the sliding groove 25. At this time, the sliding plate 28 releases the extrusion of the airbag 29 and simultaneously pulls the airbag 29 to move in the opposite direction. At this time, the top cover 39 moves in the opposite direction along the jacking groove 37 without gas jacking, making the top cover 39 fit tightly with the exhaust column 30. The airbag 29 is in the air intake state. At this time, the moving rod 40 releases the clamped state with the fixed frame 41 and moves along the fixed frame 41, causing the blocking block 22 to move downward to allow air to enter the exhaust column 30, and the airbag 29 gradually returns to its original gas-filled state. The sliding seat 26 moves in the opposite direction along the sliding groove 25 under the push of the hinge plate 16. At this time, the vertical plate 15 pushes the extrusion plate 21 to move in the opposite direction in the cylinder 5. At this time, the cylinder 5 is in the air outlet state, and the air pipe 20 injects gas into the spraying box 18. As the pressure on the nozzle side gradually increases, the one-way valve in the nozzle gradually opens, and the mold release agent pre-stored in the spraying box 18 is sprayed out from the nozzle, uniformly coating the outer wall of the mold core 14 and the inner wall of the mold base 6. At the same time, as the carrier plate 3 moves downward, the spraying box 18 gradually moves away from the mold base 6 to avoid interfering with the injection molding of the mold. When the injection molding is completed and the carrier plate 3 moves upward, at this time, the sliding seat 26 moves along the sliding groove 25 under the push of the spring in the sliding groove 25. At the same time, the connecting rod 27 on the sliding seat 26 pushes the sliding plate 28 to slide in the installation groove 36. During the movement of the sliding plate 28, the airbag 29 is extruded, causing the airbag 29 to exhaust. The gas in the airbag 29 is discharged into the exhaust column 30. The top cover 39 moves upward under the push of the gas, and the gas in the exhaust column 30 is discharged through the gap between the top cover 39 and the exhaust column 30, creating a gap between the injection molded part and the inner wall of the mold base 6. At the same time, the toothed plate 35 fixedly connected to one of the sliding seats 26 slides along the guide rail 34 under the push of the sliding seat 26, and the toothed plate 35 drives the synchronous rotation of the spur gear 31 and the shaft rod 9. The knocking block 33 slidably connected to the installation box 32 was previously contracted under the extrusion of the lifting plate 8. When the knocking block 33 rotates to the bottom of the mold base 6, the extrusion state is released, and the spring installed on the knocking block 33 pushes the knocking block 33 to move in the opposite direction to knock on the bottom of the mold base 6. Through the gas in the exhaust column 30 and the knocking and vibration of the knocking block 33, a gap is created in advance between the injection molded part and the mold base 6, preventing the ejector rod 10 from directly jacking and damaging the surface of the injection molded part. As the carrier plate 3 continues to rise, the lifting rod 7 moves upward, causing the lifting plate 8 to also move upward synchronously. The ejector rod 10 on the lifting plate 8 ejects the injection molded part that has been separated from the inner wall of the mold base 6 from the mold base 6, completing the demolding of the injection molded part. At the same time, the sliding seat 26 moves along the sliding groove 25 under the pull of the hinge plate 16 and gradually approaches the mold base 6. At this time, the vertical plate 15 pulls the extrusion plate 21 to move, and the cylinder 5 is in the air intake state. At this time, the air pipe 20 sucks air from the spraying box 18. At this time, the push plate 19 moves along the spraying box 18 under the elastic force of the spring provided thereon. At the same time, the water pipe 17 provided on the other side of the push plate 19 extracts the mold release agent from the storage box 4 and stores it in the spraying box 18. It should be noted that,One-way valves are installed in the nozzles provided on the spraying box 18. When the air cylinder 5 is in the air intake state and the demolding agent is sucked into the spraying box 18, the nozzles are in a closed state, and at the same time, the demolding agent will not flow out of the nozzles, completing the demolding of the injection molded part.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An injection molding die for automotive parts, comprising a bottom plate (1) and a bearing plate (3), characterized in that: A demolding assembly, including a guide rail (34) fixedly connected to the upper surface of the bottom plate (1), a toothed plate (35) is slidably connected in the guide rail (34), two sliding grooves (25) are symmetrically formed on the bottom plate (1), a sliding seat (26) is slidably connected in the sliding groove (25), a shaft rod (9) is rotatably connected to the upper surface of the bottom plate (1), two mounting boxes (32) are symmetrically installed on the outer wall of the shaft rod (9), and the two mounting boxes (32) are fixedly connected to the shaft rod (9), a plurality of knocking blocks (33) are slidably connected to the arc end of the mounting box (32) evenly, a connecting rod (27) is symmetrically and fixedly connected to one end of the sliding seat (26) close to the shaft rod (9), two mounting grooves (36) are symmetrically formed on the bottom plate (1), a sliding plate (28) is slidably connected in the mounting groove (36), an airbag (29) is fixedly connected to one end of the sliding plate (28) away from the connecting rod (27), a spur gear (31) is fixedly connected to the outer wall of the shaft rod (9), and the teeth of the spur gear (31) are meshed with the teeth of the toothed plate (35); A spraying assembly, including two cylinders (5) symmetrically installed on the upper surface of the bottom plate (1), a vertical plate (15) is fixedly connected to one end of the sliding seat (26) close to the bearing plate (3), a spraying box (18) is fixedly connected to one end of the vertical plate (15) away from the bottom plate (1), and a push plate (19) is slidably connected in the spraying box (18).

2. The injection molding die for an automotive part according to claim 1, wherein: Two lifting columns (2) are symmetrically and fixedly connected to the upper surface of the bottom plate (1), a lifting groove (11) is formed in the lifting column (2), and a lifting rod (7) is slidably connected in the lifting groove (11).

3. The injection molding die for an automotive part according to claim 2, characterized in that: Two guide columns (24) are symmetrically and fixedly connected to the upper surface of the bottom plate (1), a lifting plate (8) is slidably connected to the outer walls of the two guide columns (24), and a plurality of ejector rods (10) are symmetrically and fixedly connected to one end of the lifting plate (8) away from the bottom plate (1).

4. The injection molding die for automotive parts according to claim 3, wherein: A lower pressing plate (12) is fixedly connected to one end of the lifting rod (7) close to the lifting plate (8), two optical rods (13) are symmetrically and fixedly connected to one end of the lower pressing plate (12) close to the bottom plate (1), and the optical rods (13) are adapted to the lifting plate (8).

5. An injection molding die for automotive parts according to claim 1, characterized in that: Hinge plates (16) are rotatably connected to both ends of the bearing plate (3), and one end of the hinge plate (16) away from the bearing plate (3) is rotatably connected to the spraying box (18).

6. The injection molding die for an automotive part according to claim 5, wherein: A storage box (4) is fixedly connected to one end of the bearing plate (3) away from the bottom plate (1), water pipes (17) are fixedly connected to both ends of the storage box (4), and the spraying box (18) is communicated with the storage box (4) through the water pipes (17).

7. The injection molding die for an automotive part according to claim 1, wherein: A pressing plate (21) is slidably connected to the inner wall of the cylinder (5). One end of the pressing plate (21) close to the bearing plate (3) is fixedly connected to a sliding rod (23), and the sliding rod (23) is fixedly connected to the vertical plate (15). An air pipe (20) is fixedly connected to the cylinder (5), and the spraying box (18) is communicated with the cylinder (5) through the air pipe (20).

8. A plastic injection molding die for automotive parts according to claim 1, characterized in that: A mold base (6) is fixedly connected to the upper surface of the bottom plate (1). A plurality of exhaust columns (30) are evenly installed in the mold base (6), and the plurality of exhaust columns (30) are slidably connected to the mold base (6). A jacking groove (37) is formed in the exhaust column (30), and a sliding frame (38) is slidably connected in the jacking groove (37). One end of the exhaust column (30) close to the bottom plate (1) is fixedly connected to an airbag (29).

9. The injection molding die for automotive parts according to claim 8, wherein: One end of the sliding frame (38) away from the airbag (29) is fixedly connected to a top cover (39). One end of the top cover (39) close to the sliding frame (38) is fixedly connected to a fixing frame (41). A moving rod (40) is slidably connected to the fixing frame (41). One end of the moving rod (40) close to the top cover (39) is fixedly connected to a blocking block (22).

10. A plastic injection molding die for automotive parts according to claim 8, characterized in that: One end of the bearing plate (3) close to the bottom plate (1) is fixedly connected to a mold core (14), and the mold core (14) is adapted to the mold base (6).

Images