Quick mold change injection mold for automobile plastic parts

Abstract

This utility model discloses a quick-change injection mold for automotive plastic parts, including a mold, a top cover, and brackets fixedly connected to both sides of the bottom of the top cover. A base is fixedly connected to the bottom of both brackets. A lifting platform for raising and lowering the mold is slidably connected to the inner side wall of the base. Slides are fixedly connected to both sides of the top of the base. A moving mold base and a fixed mold base are slidably connected to the outer side walls of the two slides, respectively. A drive mechanism for moving the moving mold base and the fixed mold base is fixedly connected to the outer side walls of both the moving mold base and the fixed mold base. Clamping and fixing mechanisms are provided on the outer side walls of both the moving mold base and the fixed mold base. This utility model slidably installs the moving mold base and the fixed mold base within a frame, adjusting their positions through a drive system, reducing safety risks and saving scheduling time. Simultaneously, clamping devices are provided on the outer sides of the moving mold base and the fixed mold base, combined with a secondary fixing rod, forming a double-fixing structure to prevent mold displacement and ensure accuracy, simplifying the operation process and significantly shortening the installation and fixing time.

Description

Technical Field

[0001] This application relates to the field of plastic parts manufacturing technology, specifically a quick-change injection mold for automotive plastic parts. Background Technology

[0002] In the injection molding industry, the inefficiency and high complexity of mold changeover have always been key factors hindering the improvement of production efficiency. Traditional injection molding machines rely on large equipment such as cranes and the coordinated operation of multiple operators when changing molds. This not only consumes a lot of time but also results in high labor costs, severely restricting overall production efficiency and leading to a significant increase in production costs.

[0003] A search revealed a quick mold changing device for injection molding machines, patent publication number "CN223173433U". This device uses a dual-axis motor to wind lifting ropes. During the winding process, multiple sections of the ropes press against each other, and the insertion parts on adjacent sections insert into insertion slots. At this point, the multiple sections interlock, forming a straight rod structure. This effectively reduces the swaying amplitude during mold lifting and lowers the risk of mold collisions. The above technical features have the following shortcomings: From the perspective of the entire mold changing process, it is still heavily reliant on lifting equipment and has not made substantial improvements to the cumbersome operation of mold installation and fixing. In actual production, operators still need to spend a lot of time aligning and fixing the mold, making it difficult to achieve truly efficient and convenient rapid mold changing.

[0004] Therefore, a quick-change injection mold for automotive plastic parts is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a quick-change injection mold for automotive plastic parts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-change injection mold for automotive plastic parts, comprising a mold, a top cover, and brackets fixedly connected to both sides of the bottom of the top cover, characterized in that: a base is fixedly connected to the bottom ends of the two brackets, a lifting platform for driving the mold to rise and fall is slidably connected to the inner side wall of the base, slide blocks are fixedly connected to both sides of the top of the base, a moving mold base and a fixed mold base are slidably connected to the outer side walls of the two slide blocks respectively, a driving mechanism for driving the moving mold base and the fixed mold base are fixedly connected to the outer side walls of the moving mold base and the fixed mold base, and a clamping and fixing mechanism is provided on the outer side walls of the moving mold base and the fixed mold base.

[0007] Preferably, the driving mechanism includes a plurality of cylinders fixedly mounted on the outer side walls of the two brackets, the output ends of the plurality of cylinders being fixedly mounted on the outer side walls of the corresponding moving mold base and fixed mold base, and two slide rods being fixedly mounted on opposite sides of the two brackets, the inner side walls of the moving mold base and fixed mold base being slidably mounted on the outer side walls of the two slide rods.

[0008] Preferably, the moving mold base has an air hole at its center, and multiple first insert rods are slidably installed through the inner sidewall of the moving mold base. The other ends of the multiple first insert rods are fixedly connected to a moving mold push plate. Moving mold electric cylinders are fixedly installed on both sides of the outer sidewall of the moving mold push plate. Two moving mold electric cylinders are fixedly fixed on the outer sidewall of one of the brackets. An air pump for injecting and evacuating air into the mold is fixedly installed on the outer sidewall of the moving mold base. An air pipe is fixedly installed on the outer sidewall of the air pump. The other end of the air pipe is connected to the air hole at the center of the moving mold base. Two buffer blocks are fixedly installed on the outer sidewall of the moving mold base. A positioning module is fixedly installed on the outer sidewall of the moving mold base.

[0009] Preferably, the fixed mold base has a circular hole at its center, and a plurality of second insert rods are slidably connected through the inner sidewall of the fixed mold base. The other ends of the plurality of second insert rods are fixedly connected to a fixed mold push plate. Fixed mold plate electric cylinders are fixedly connected to both sides of the outer sidewall of the fixed mold base. The output ends of the two fixed mold plate electric cylinders are fixedly connected to the outer sidewall of the fixed mold push plate. A plurality of injection positioning rods are fixedly connected to the inner side of the fixed mold push plate. The other ends of the plurality of injection positioning rods are fixedly connected to an injection positioning block. The injection positioning block is slidably mounted through the inner sidewall of the fixed mold base. An injection tube is fixedly connected to the inner sidewall of the injection positioning block. One end of the injection tube passes through one side of the fixed mold push plate and is fixedly mounted on the inner sidewall of the fixed mold push plate.

[0010] Preferably, the clamping and fixing mechanism includes clamping electric cylinders fixedly installed on both sides of the outer wall of the moving mold base and the fixed mold base. The output ends of the multiple clamping electric cylinders are fixedly connected to multiple push columns. The other ends of the multiple push columns are fixedly connected to push blocks. The inner side walls of the multiple push blocks are threadedly connected to screw turntables. The other ends of the multiple screw turntables are rotatably mounted with clamping plates. The outer side walls of the multiple clamping plates are fixedly connected to limit rods. The other ends of the multiple limit rods are slidably mounted on the inner side walls of the corresponding push blocks.

[0011] Preferably, a support plate is fixedly installed on both sides of the base, and multiple power rollers are rotatably installed on the inner sidewalls of the two support plates, and the lifting platform is slidably installed on the inner sidewalls of the two support plates.

[0012] Preferably, the bottom of the lifting platform is fixedly connected to multiple lifting devices for controlling the lifting and lowering of the lifting platform.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention slides the moving mold base and the fixed mold base within a frame, adjusting their positions via a drive system. This eliminates the reliance on cranes and other equipment for traditional mold changing, reducing safety risks and saving scheduling time, thus laying the foundation for rapid mold changing. Simultaneously, clamping devices are installed on the outer sides of the moving and fixed mold bases, forming a double-fixed structure with the help of insert rods for secondary fixation. This double-fixed structure is more robust than single-fixation, preventing mold displacement to ensure accuracy, simplifying the operation process, and significantly shortening the installation and fixing time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal connection structure of this utility model; Figure 3 This is a schematic diagram of the connection structure between the moving mold base and the clamping and fixing mechanism of this utility model; Figure 4 This is a schematic diagram of the connection structure between the fixed mold base and the clamping and fixing mechanism of this utility model; Figure 5 This is a schematic diagram of the connection structure of the lifting platform, support, and base of this utility model.

[0015] In the diagram: 1. Top cover; 2. Bracket; 3. Slide rod; 4. Slide seat; 5. Moving mold base; 6. Fixed mold base; 7. Mold; 8. Support plate; 9. Power roller; 10. Clamping electric cylinder; 11. Push column; 12. Push block; 13. Screw turntable; 14. Clamping plate; 15. Fixed mold plate electric cylinder; 16. Fixed mold push plate; 17. Second insert rod; 18. Injection positioning rod; 19. Injection positioning block; 20. Injection tube; 21. Moving mold push plate; 22. First insert rod; 23. Air pump; 24. Air pipe; 25. Buffer block; 26. Cylinder; 27. Positioning module; 28. Moving mold plate electric cylinder; 29. ​​Lifting platform; 30. Lifting device; 31. Base; 32. Limit rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Please refer to Figures 1-5This utility model provides a quick mold change injection mold solution for automotive plastic parts: a quick mold change injection mold for automotive plastic parts includes a mold 7, a top cover 1, and brackets 2 fixedly connected to the bottom sides of the top cover 1. The bottom ends of the two brackets 2 are fixedly connected to a base 31. The inner side wall of the base 31 is slidably connected to a lifting platform 29 that drives the mold 7 to rise and fall. The top sides of the base 31 are fixedly connected to slide blocks 4. The outer side walls of the two slide blocks 4 are respectively slidably connected to a moving mold base 5 and a fixed mold base 6. The outer side walls of the moving mold base 5 and the fixed mold base 6 are fixedly connected to a driving mechanism that drives them to move. The outer side walls of the moving mold base 5 and the fixed mold base 6 are provided with clamping and fixing mechanisms.

[0018] In this embodiment, the driving mechanism includes multiple cylinders 26 fixedly mounted on the outer walls of the two supports 2. The output ends of the multiple cylinders 26 are all fixedly mounted on the outer walls of the corresponding moving mold base 5 and fixed mold base 6. Two slide rods 3 are fixedly fixed on opposite sides of the two supports 2. The inner walls of the moving mold base 5 and fixed mold base 6 are slidably mounted on the outer walls of the two slide rods 3. The cylinders 26 extend and retract to drive the moving mold base 5 and fixed mold base 6 to slide on the slide rods 3 and their respective slidably connected slide seats 4, so as to move away from or closer to each other.

[0019] In this embodiment, an air hole is provided in the center of the moving mold base 5. Multiple first insert rods 22 are slidably installed through the inner sidewall of the moving mold base 5. The other ends of the multiple first insert rods 22 are fixedly connected to a moving mold push plate 21. Moving mold plate electric cylinders 28 are fixedly installed on both sides of the outer sidewall of the moving mold push plate 21. Two moving mold plate electric cylinders 28 are fixedly fixed to the outer sidewall of one of the brackets 2. The moving mold plate electric cylinders 28 drive the moving mold push plate 21 to move, causing the first insert rods 22 to insert into or pull out of the mold. An air pump 23 for injecting and evacuating air into the mold 7 is fixedly installed on the outer sidewall of the moving mold base 5. An air pipe 24 is fixedly installed on the outer sidewall of the air pump 23. The other end of 24 is connected to the air hole in the center of the moving mold base 5. When the injection is finished, the air pump 23 operates to inject gas into the air pipe 24, so that the injection part in the mold 7 can be smoothly removed. Two buffer blocks 25 are fixedly installed on the outer side wall of the moving mold base 5. The buffer blocks 25 play a buffering role when the moving mold push plate 21 moves. When the moving mold push plate 21 drives multiple first inserts 22 to approach the moving mold base 5 and contact the buffer blocks 25, the moving mold plate electric cylinder 28 connected to it will automatically stop working to avoid the risk of impact. A positioning module 27 is fixedly installed on the outer side wall of the moving mold base 5. The positioning module 27 assists the mold to accurately dock.

[0020] In this embodiment, a circular hole is provided at the center of the fixed mold base 6. Multiple second insert rods 17 are slidably connected through the inner sidewall of the fixed mold base 6. The other ends of the multiple second insert rods 17 are jointly and fixedly connected to a fixed mold push plate 16. Fixed mold plate electric cylinders 15 are fixedly connected to both sides of the outer sidewall of the fixed mold base 6. The output ends of the two fixed mold plate electric cylinders 15 are jointly and fixedly connected to the outer sidewall of the fixed mold push plate 16. Multiple injection positioning rods 18 are fixedly connected to the inner side of the fixed mold push plate 16. The other ends of the multiple injection positioning rods 18 are jointly and fixedly connected to an injection positioning block 19. The positioning block 19 is slidably mounted on the inner side wall of the fixed mold base 6. An injection tube 20 is fixedly connected to the inner side wall of the injection positioning block 19. One end of the injection tube 20 passes through one side of the fixed mold push plate 16 and is fixedly mounted on the inner side wall of the fixed mold push plate 16. The other end of the injection tube 20 passes through the fixed mold push plate 16 to facilitate connection to the injection device. The fixed mold plate electric cylinder 15 drives the fixed mold push plate 16 to move, so that the second insert rod 17 is inserted into or pulled out of the mold, and at the same time drives the injection positioning rod 18 and the injection positioning block 19 to move, ensuring that the injection tube 20 is precisely connected to the mold.

[0021] In this embodiment, the clamping and fixing mechanism includes clamping electric cylinders 10 fixedly installed on both sides of the outer side wall of the moving mold base 5 and the fixed mold base 6. The output ends of the multiple clamping electric cylinders 10 are all fixedly connected to multiple push columns 11, and the other ends of the multiple push columns 11 are all fixedly connected to push blocks 12. The clamping electric cylinders 10 push the push columns 11 and push blocks 12 to move. The inner side walls of the multiple push blocks 12 are all threadedly connected to screw turntables 13. Rotating the screw turntables 13 can adjust the position of the clamping plates 14. The other ends of the multiple screw turntables 13 are rotatably installed with clamping plates 14. The outer side walls of the multiple clamping plates 14 are all fixedly connected to limit rods 32. The other ends of the multiple limit rods 32 are slidably installed on the inner side walls of the corresponding push blocks 12. The limit rods 32 prevent the clamping plates 14 from rotating.

[0022] In this embodiment, a support plate 8 is fixedly installed on both sides of the base 31. Multiple power rollers 9 are rotatably installed on the inner sidewalls of the two support plates 8. The lifting platform 29 is slidably installed on the inner sidewalls of the two support plates 8. The rotation of the power rollers 9 facilitates the movement of the mold on the support plate 8. The lifting platform 29 slides on the inner sidewall of the support plate 8 to drive the mold to rise and fall. Multiple lifting devices 30 for controlling the rise and fall of the lifting platform 29 are fixedly connected to the bottom of the lifting platform 29.

[0023] The working principle is as follows: First, the mold 7 to be replaced is placed on the power roller 9 of the pallet 8. The rotation of the power roller 9 moves the mold above the lifting platform 29. The lifting device 30 drives the lifting platform 29 to rise, raising the mold 7 to a height that matches the moving mold base 5 and the fixed mold base 6. At the same time, the cylinder 26 in the drive mechanism extends and retracts, causing the moving mold base 5 and the fixed mold base 6 to slide on the slide rod 3 and the slide block 4, so that they are separated from each other, leaving enough space for the installation of the mold.

[0024] Secondly, with the help of the positioning module 27 on the moving mold base 5, the mold 7 is accurately aligned with the moving mold base 5 and the fixed mold base 6. Then, the clamping and fixing device is activated, the clamping electric cylinder 10 pushes the push column 11 and the push block 12 to move, and the screw turntable 13 is rotated to adjust the position of the clamping plate 14 so that the clamping plate 14 clamps the mold 7. The limit rod 32 prevents the clamping plate 14 from rotating, thus completing the initial fixing of the mold.

[0025] Then, the moving mold plate electric cylinder 28 drives the moving mold push plate 21 to move, causing the first insert rod 22 to be inserted into the pre-reserved hole in the mold; the fixed mold plate electric cylinder 15 drives the fixed mold push plate 16 to move, so that the second insert rod 17 is inserted into the corresponding hole in the mold, thereby achieving secondary fixation of the mold. At the same time, the fixed mold push plate 16 drives the injection positioning rod 18 and the injection positioning block 19 to move, ensuring that the injection tube 20 is precisely connected to the mold, so as to connect the injection device for injection molding operation.

[0026] Finally, after injection molding is completed, the moving mold base 5 is fixedly connected to the moving mold part of the mold through the first insert rod 22. At the same time, the clamping plate 14 of the clamping and fixing device still plays an auxiliary role in fixing the moving mold part of the mold. In addition, the air pump 23 on the moving mold base 5 is connected to the air hole of the moving mold part of the mold through the air pipe 24, and continuously provides air pressure assistance for demolding.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change injection mold for automotive plastic parts, comprising a mold (7), a top cover (1), and brackets (2) fixedly connected to both sides of the bottom of the top cover (1), characterized in that: The bottom ends of the two brackets (2) are fixedly connected to a base (31). The inner side wall of the base (31) is slidably connected to a lifting platform (29) that drives the mold (7) to rise and fall. The top two sides of the base (31) are fixedly connected to slide blocks (4). The outer side walls of the two slide blocks (4) are slidably connected to a moving mold base (5) and a fixed mold base (6). The outer side walls of the moving mold base (5) and the fixed mold base (6) are fixedly connected to a driving mechanism that drives them to move. The outer side walls of the moving mold base (5) and the fixed mold base (6) are provided with a clamping and fixing mechanism.

2. The quick-change injection mold for automotive plastic parts according to claim 1, characterized in that: The driving mechanism includes multiple cylinders (26) fixedly installed on the outer walls of the two brackets (2). The output ends of the multiple cylinders (26) are fixedly installed on the outer walls of the corresponding moving mold base (5) and fixed mold base (6). Two slide rods (3) are fixed on opposite sides of the two brackets (2). The inner walls of the moving mold base (5) and fixed mold base (6) are slidably installed on the outer walls of the two slide rods (3).

3. The quick-change injection mold for automotive plastic parts according to claim 1, characterized in that: The center of the moving mold base (5) is provided with an air hole. Multiple first insert rods (22) are slidably installed through the inner side wall of the moving mold base (5). The other ends of the multiple first insert rods (22) are fixedly connected to the moving mold push plate (21). Both sides of the outer side wall of the moving mold push plate (21) are fixedly installed with moving template electric cylinders (28). Two moving template electric cylinders (28) are fixedly fixed on the outer side wall of one of the brackets (2). An air pump (23) for injecting and evacuating air into the mold (7) is fixedly installed on the outer side wall of the moving mold base (5). An air pipe (24) is fixedly installed on the outer side wall of the air pump (23). The other end of the air pipe (24) is connected to the air hole in the center of the moving mold base (5). Two buffer blocks (25) are fixedly installed on the outer side wall of the moving mold base (5). A positioning module (27) is fixedly installed on the outer side wall of the moving mold base (5).

4. The quick-change injection mold for automotive plastic parts according to claim 1, characterized in that: The fixed mold base (6) has a circular hole in the center. Multiple second insert rods (17) are slidably connected through the inner side wall of the fixed mold base (6). The other ends of the multiple second insert rods (17) are fixedly connected to the fixed mold push plate (16). Fixed mold plate electric cylinders (15) are fixedly connected to both sides of the outer side wall of the fixed mold base (6). The output ends of the two fixed mold plate electric cylinders (15) are fixedly connected to the outer side wall of the fixed mold push plate (16). Multiple injection positioning rods (18) are fixedly connected to the inner side of the fixed mold push plate (16). The other ends of the multiple injection positioning rods (18) are fixedly connected to the injection positioning block (19). The injection positioning block (19) is slidably installed through the inner side wall of the fixed mold base (6). An injection tube (20) is fixedly connected to the inner side wall of the injection positioning block (19). One end of the injection tube (20) is fixedly installed through one side of the fixed mold push plate (16) on the inner side wall of the fixed mold push plate (16).

5. The quick-change injection mold for automotive plastic parts according to claim 1, characterized in that: The clamping and fixing mechanism includes clamping electric cylinders (10) fixedly installed on both sides of the outer side wall of the moving mold base (5) and the fixed mold base (6). The output ends of the multiple clamping electric cylinders (10) are fixedly connected to multiple push columns (11). The other end of the multiple push columns (11) is fixedly connected to push blocks (12). The inner side wall of the multiple push blocks (12) is threadedly connected to screw turntables (13). The other end of the multiple screw turntables (13) is rotatably mounted with clamping plates (14). The outer side wall of the multiple clamping plates (14) is fixedly connected to limit rods (32). The other end of the multiple limit rods (32) is slidably mounted on the inner side wall of the corresponding push block (12).

6. The quick-change injection mold for automotive plastic parts according to claim 1, characterized in that: Both sides of the base (31) are fixedly installed with trays (8), and multiple power rollers (9) are rotatably installed on the inner sidewalls of the two trays (8). The lifting platform (29) is slidably installed on the inner sidewalls of the two trays (8).

7. The quick-change injection mold for automotive plastic parts according to claim 1, characterized in that: The bottom of the lifting platform (29) is fixedly connected to multiple lifting devices (30) that control the lifting of the lifting platform (29).

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