Injection molding device for automobile plastic part production

By designing a rapid ejection structure and a spray cooling system, the problems of slow material handling and low cooling efficiency in traditional injection molding equipment have been solved, thereby improving the efficiency and cooling effect of automotive plastic parts production.

CN223735315UActive Publication Date: 2025-12-30SHANGHAI HONGLI PLASTICS CO LTD
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Patent Information

Application Number
CN202520179414.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-05
Publication Date
2025-12-30
Estimated Expiration
2035-02-05

AI Technical Summary

Technical Problem

Traditional injection molding equipment cannot quickly remove the plastic parts after production and has low cooling efficiency, which affects processing efficiency.

Method used

A structure including a molding die, an ejector block, a telescopic rod, a force-bearing block, and a cylinder is designed for rapid ejection of plastic parts; a water storage box, a spray head, and a water tank system are also provided to achieve rapid cooling; and the material conveying efficiency is improved by a feeding cylinder, a motor, and spiral conveyor blades.

Benefits of technology

It enables rapid material handling and cooling, improves the production efficiency of injection molding equipment, reduces material waste, and enhances the cooling effect.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223735315U_ABST
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Abstract

The utility model discloses an injection molding device for automobile plastic part production, which comprises a bearing seat, supporting legs are fixedly arranged on the upper end surface of the bearing seat and are positioned on two sides, a top plate is fixedly arranged on the upper end surfaces of the supporting legs, sliding rods are arranged on four corners of the top plate in a sliding manner, and a forming die is fixedly arranged at the bottom of each sliding rod. An ejection block is slidably arranged in the forming die, telescopic rods are arranged on the portions, located on the two sides, of the bottom of the ejection block, stress blocks are arranged at the bottoms of the telescopic rods, springs are fixedly arranged between the stress blocks and the forming die, and an air cylinder is arranged on the portion, located in the middle, of the lower end face of the bearing base. The output end of the air cylinder is fixedly connected with the bottom of the forming die, so that after machining is completed, a user can control the air cylinder to enable the forming die to move downwards, the stress block makes contact with the upper end face of the bearing base, at the moment, the ejection block can eject out the automobile plastic part in the forming die, and rapid material taking is convenient.
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Description

Technical Field

[0001] This utility model relates to the field of automotive plastic parts manufacturing technology, and more specifically, it relates to an injection molding device for automotive plastic parts manufacturing. Background Technology

[0002] Plastics are polymers made from monomers through addition or condensation polymerization. Commonly known as plastics or resins, they can have their composition and shape freely altered. They consist of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. In today's automotive industry, plastics have become an essential component. In developed countries, the amount of plastic used in automobiles has even become an important indicator of automotive design and manufacturing standards. Injection molding equipment is required in the production of automotive plastic parts.

[0003] Traditional injection molding equipment cannot quickly unload automotive plastic parts after production, resulting in slow material handling speed during the production of batches of automotive plastic parts, which affects the processing efficiency of automotive plastic parts.

[0004] After molding, the products are generally cooled by natural air or by the air blown out by a fan. This cooling method is relatively slow and needs to be improved. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides an injection molding device for the production of automotive plastic parts, thereby solving the technical problem mentioned in the background art that traditional injection molding devices cannot quickly export automotive plastic parts after production is completed.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an injection molding device for producing automotive plastic parts, comprising a receiving seat, with support legs fixedly provided on both sides of the upper end face of the receiving seat, a top plate fixedly provided on the upper end face of the support legs, sliding rods slidably provided on the four corners of the top plate, a molding die fixedly provided at the bottom of the sliding rods, an ejector block slidably provided inside the molding die, telescopic rods provided on both sides of the bottom of the ejector block, force-bearing blocks provided at the bottom of each telescopic rod, and springs fixedly provided between each force-bearing block and the molding die, a cylinder provided at the middle position of the lower end face of the receiving seat, the output end of the cylinder being fixedly connected to the bottom of the molding die, water storage boxes provided on both sides of the top plate, and spray heads provided at the bottom of each water storage box, with multiple spray heads arranged linearly.

[0009] The present invention is further configured such that a bracket is provided at the bottom of the receiving seat and at each of the four corners, a water tank is fixedly provided at the bottom of the bracket, a connecting pipe is provided between the two water storage boxes, a water inlet pipe is provided on the outer wall of the connecting pipe, the other end of the water inlet pipe is connected to the water tank, and a water pump is provided on the water inlet pipe to facilitate the guiding of water into the water storage box.

[0010] The present invention is further configured such that the upper surface of the receiving seat is inclined and a water-blocking frame is provided around it to facilitate the blocking of water and prevent waste.

[0011] The present invention is further configured such that a feed pipe is fixedly provided on the upper end surface of the top plate at the middle position, a feeding cylinder is provided at the upper end of the feed pipe, a motor is provided at the upper end of the feeding cylinder, the output end of the motor passes through the feeding cylinder and is provided with a conveying shaft, and a spiral conveying blade is provided on the outer wall of the conveying shaft to facilitate the entry of the raw material for processing automotive plastic parts into the molding die.

[0012] The present invention is further provided with a feeding pipe on the outer wall of the feeding cylinder and at the upper end, and a feeding hopper at the upper end of the feeding pipe, so as to facilitate the addition of raw materials into the feeding cylinder.

[0013] The present invention is further configured such that a water inlet hole is provided on the upper end face of the water tank, and the water inlet hole is located at the lower position of the receiving seat, so as to facilitate the collection of excess water.

[0014] The present invention is further configured such that a sealing ring is fixedly provided on the lower end face of the top plate, and a sealing groove is provided on the upper end face of the molding mold, and the sealing ring can enter the interior of the sealing groove, so as to increase the sealing performance between the top plate and the molding mold.

[0015] The present invention is further provided that the feed pipe is equipped with a valve to facilitate the control of the amount of raw materials added.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an injection molding device for the production of automotive plastic parts, which has the following beneficial effects:

[0018] 1. By setting up a molding die, ejector block, telescopic rod, and force-bearing block, after processing, the user can control the cylinder to move the molding die downward so that the force-bearing block contacts the upper end face of the receiving seat. At this time, the spring will be compressed, which will drive the ejector block to move upward to eject the automotive plastic parts inside the molding die, making it convenient and quick to remove the material.

[0019] 2. By setting up a water storage box, spray head and water tank, the user can turn on the water pump to let the water in the water tank enter the water storage box, and spray it out through the spray head to spray the molding mold to cool it down quickly, which helps the automotive plastic parts inside the molding mold to be molded quickly. After spraying, the water will return to the water tank through the receiving seat and water inlet hole for easy recycling.

[0020] 3. By setting up a feeding cylinder, motor and spiral conveyor blades, users can add raw materials for automotive plastic injection molding into the feeding cylinder through the feeding hopper and feeding pipe. Then, the motor is turned on to make the conveyor shaft drive the spiral conveyor blades to rotate, so that the raw materials enter the molding mold through the feeding pipe, preventing sticking and material waste. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an injection molding device for producing automotive plastic parts in its unused state.

[0022] Figure 2 This is a sectional view showing the installation of the forming mold, ejector block, telescopic rod, force-bearing block, and spring.

[0023] Figure 3 This is a schematic diagram showing the locations of the water storage box, sprinkler heads, and sealing rings on the top panel.

[0024] Figure 4 A schematic diagram showing the installation positions of the connecting pipe, water supply pipe, and water pump on the water storage box;

[0025] Figure 5 This is a cross-sectional view showing the installation of the feed pipe, feed cylinder, motor, conveyor shaft, and screw conveyor blades.

[0026] In the diagram: 1. Receiving seat; 2. Support leg; 3. Top plate; 4. Sliding rod; 5. Forming mold; 6. Ejector block; 7. Telescopic rod; 8. Force-bearing block; 9. Spring; 10. Cylinder; 11. Water storage box; 12. Spray head; 13. Bracket; 14. Water tank; 15. Connecting pipe; 16. Water inlet pipe; 17. Water pump; 18. Water baffle frame; 19. Feed pipe; 20. Feeding cylinder; 21. Motor; 22. Conveying shaft; 23. Screw conveyor blades; 24. Feeding pipe; 25. Feeding hopper; 26. Water inlet hole; 27. Sealing ring; 28. Sealing groove; 29. ​​Valve. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figure 1-5 An injection molding device for producing automotive plastic parts includes a receiving seat 1. Support legs 2 are fixedly provided on the upper end surface and on both sides of the receiving seat 1. A top plate 3 is fixedly provided on the upper end surface of the support legs 2. Sliding rods 4 are slidably provided on the four corners of the top plate 3. A molding mold 5 is fixedly provided at the bottom of the sliding rods 4. An ejector block 6 is slidably provided inside the molding mold 5. Telescopic rods 7 are provided at the bottom of the ejector block 6 and on both sides. Force-receiving blocks 8 are provided at the bottom of each telescopic rod 7. Springs 9 are fixedly provided between each force-receiving block 8 and the molding mold 5. A cylinder 10 is provided at the lower end surface and in the middle of the receiving seat 1. The output end of the cylinder 10 is fixedly connected to the bottom of the molding mold 5. Water storage boxes 11 are provided on both sides of the top plate 3. Spray heads 12 are provided at the bottom of each water storage box 11. Multiple spray heads 12 are provided and arranged linearly.

[0031] In this embodiment, the bottom of the support 1 is provided with brackets 13 at the four corners, and a water tank 14 is fixedly provided at the bottom of the brackets 13. A connecting pipe 15 is provided between the two water storage boxes 11. A water inlet pipe 16 is provided on the outer wall of the connecting pipe 15. The other end of the water inlet pipe 16 is connected to the water tank 14. A water pump 17 is provided on the water inlet pipe 16. The upper end face of the support 1 is inclined and a water baffle frame 18 is provided around it. A water inlet hole 26 is opened on the upper end face of the water tank 14. The water inlet hole 26 is located at the sunken position of the support 1.

[0032] More specifically, after processing, the user can control the cylinder 10 to move the molding mold 5 downward so that the force block 8 contacts the upper surface of the support seat 1. At this time, the spring 9 will be squeezed, which will drive the ejector block 6 to move upward to eject the automotive plastic parts inside the molding mold 5, making it convenient to quickly remove the material. When the molding mold 5 is closed with the top plate 3, the water pump 17 can be turned on to allow the water in the water tank 14 to enter the water storage box 11 and spray it out through the spray nozzle 12 to spray the molding mold 5 to cool it down quickly, which helps the automotive plastic parts inside the molding mold 5 to be molded quickly. After spraying, the water will re-enter the water tank 14 through the support seat 1 and the water inlet 26 for easy recycling.

[0033] Please see Figure 1 and Figure 5 As an embodiment for feeding raw materials into the molding die 5: a feed pipe 19 is fixedly provided on the upper end face of the top plate 3 at the middle position. A feeding cylinder 20 is provided at the upper end of the feed pipe 19. A motor 21 is provided at the upper end of the feeding cylinder 20. The output end of the motor 21 passes through the feeding cylinder 20 and is provided with a conveying shaft 22. A spiral conveying blade 23 is provided on the outer wall of the conveying shaft 22. A feeding pipe 24 is provided on the outer wall of the feeding cylinder 20 at the upper end. A feeding hopper 25 is provided at the upper end of the feeding pipe 24. A valve 29 is provided on the feed pipe 19.

[0034] Specifically, the user can add the raw materials for injection molding of automotive plastic parts into the feeding cylinder 20 through the feeding hopper 25 and the feeding pipe 24. Then, the motor 21 is turned on to make the conveying shaft 22 drive the spiral conveying blade 23 to rotate, so that the raw materials enter the molding mold 5 through the feeding pipe 19, preventing sticking and material waste.

[0035] Please refer to Figure 2 and Figure 3 As a further embodiment to increase the sealing between the top plate 3 and the molding mold 5: a sealing ring 27 is fixedly provided on the lower end face of the top plate 3, and a sealing groove 28 is provided on the upper end face of the molding mold 5, so that the sealing ring 27 can enter the interior of the sealing groove 28.

[0036] Specifically, the sealing between the top plate 3 and the forming mold 5 can be increased to prevent material leakage.

[0037] In summary, when using the entire equipment: the user can first control the cylinder 10 to move the molding die 5 upwards, so that it closes with the top plate 3 and the sealing ring 27 enters the sealing groove 28. Then, the raw materials for injection molding of automotive plastic parts are added to the feeding cylinder 20 through the feeding hopper 25 and the feeding pipe 24. After that, the motor 21 is turned on to make the conveying shaft 22 drive the spiral conveying blades 23 to rotate, so that the raw materials enter the molding die 5 through the feeding pipe 19. During the molding process, the water pump 17 can be turned on to allow the water in the water tank 14 to enter the water storage box 11. The water is sprayed through the spray nozzle 12 to spray the molding mold 5, thereby rapidly cooling it and facilitating the rapid molding of the automotive plastic parts inside the molding mold 5. The sprayed water will then re-enter the water tank 14 through the receiving seat 1 and the water inlet 26 for easy recycling. After processing, the user can control the cylinder 10 to move the molding mold 5 downward so that the force block 8 contacts the upper end surface of the receiving seat 1. At this time, the spring 9 will be compressed, thereby driving the ejector block 6 to move upward to eject the automotive plastic parts inside the molding mold 5 for quick material removal.

[0038] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An injection molding device for producing a plastic part of an automobile, comprising a receiving seat (1), characterized in that: The upper end surface of the receiving seat (1) is provided with support legs (2) on both sides, the upper end surface of the support leg (2) is fixedly provided with a top plate (3), the four corners of the top plate (3) are slidably provided with sliding rods (4), the bottom of the sliding rod (4) is fixedly provided with a forming die (5), the inside of the forming die (5) is slidably provided with an ejection block (6), the bottom of the ejection block (6) is provided with telescopic rods (7) on both sides, the bottom of the telescopic rod (7) is provided with a force block (8), the force block (8) and the forming die (5) are fixedly provided with springs (9) between them, the lower end surface of the receiving seat (1) is provided with a cylinder (10) at the middle position, the output end of the cylinder (10) is fixedly connected with the bottom of the forming die (5), the two side surfaces of the top plate (3) are provided with water storage boxes (11), the bottom of the water storage box (11) is provided with a shower head (12), the shower head (12) is provided with a plurality of linear arrangements.

2. The injection molding device for producing an automobile plastic part according to claim 1, characterized in that: The bottom of the receiving seat (1) is provided with supports (13) on the four corners, the bottom of the support (13) is fixedly provided with a water tank (14), a communication pipe (15) is arranged between the two water storage boxes (11), the outer wall of the communication pipe (15) is provided with a water inlet pipe (16), the other end of the water inlet pipe (16) is communicated with the water tank (14), and the water inlet pipe (16) is provided with a water pump (17).

3. The injection molding device for producing a plastic part of an automobile according to claim 2, characterized in that: The upper end surface of the receiving seat (1) is provided with a water retaining frame (18).

4. The injection molding device for producing an automobile plastic part according to claim 1, characterized in that: The upper end surface of the top plate (3) is fixedly provided with a feeding pipe (19), the upper end of the feeding pipe (19) is provided with a feeding cylinder (20), the upper end of the feeding cylinder (20) is provided with a motor (21), the output end of the motor (21) penetrates through the feeding cylinder (20) and is provided with a conveying shaft (22), and the outer wall of the conveying shaft (22) is provided with a spiral conveying blade (23).

5. The injection molding device for producing a plastic part of an automobile according to claim 4, characterized in that: The outer wall of the feeding cylinder (20) is provided with a feeding pipe (24) at the upper end, and the upper end of the feeding pipe (24) is provided with a feeding hopper (25).

6. The injection molding device for producing an automobile plastic part according to claim 2, characterized in that: The upper end surface of the water tank (14) is provided with a water inlet hole (26), and the water inlet hole (26) is located in the sunken position of the receiving seat (1).

7. The injection molding device for producing an automobile plastic part according to claim 1, characterized in that: The lower end surface of the top plate (3) is fixedly provided with a sealing ring (27), the upper end surface of the forming die (5) is provided with a sealing groove (28), and the sealing ring (27) can enter the inside of the sealing groove (28).

8. The injection molding device for producing a plastic part of an automobile according to claim 4, characterized in that: The feeding pipe (19) is provided with a valve (29).