Automobile fender injection mold with quick ejection mechanism

Abstract

The utility model provides an automobile fender injection mold with a rapid ejection mechanism, and belongs to the technical field of molds. The die comprises an upper die plate and a lower die plate, a forming groove is formed in the upper die plate in an inward concave mode, a forming block inserted into the forming groove is arranged on the lower die plate in a protruding mode, the forming block is inserted into the forming groove, and a forming cavity is formed by the forming block and the forming groove. The injection molding liquid can be injected into the molding cavity from the top of the molding cavity through the vertical injection molding pipe after being shunted by the injection molding liquid shunting plate, in addition, the injection molding liquid can be injected from the side part of the molding cavity through diversion by the lateral glue feeding assembly connected with the injection molding liquid shunting plate, and the injection molding efficiency can be effectively improved by matching with the vertical injection molding pipe.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to an injection mold for automobile mudguards with a fast ejection mechanism. Background Technology

[0002] Car mudguards are generally injection molded. Since mudguards are mostly curved, the glue is usually injected from the top of the molding cavity, which results in low injection efficiency.

[0003] For example, a Chinese patent discloses an injection mold for automobile mudguards [application number: 202310221556.2], which includes a fixed mold assembly, a moving mold assembly, and a feeding mechanism. The fixed mold assembly and the moving mold assembly form a product cavity. The feeding mechanism includes: a hot runner, which is disposed on the fixed mold assembly. The lower part of the fixed mold assembly is provided with a first sub-runner and a second sub-runner; a first valve needle and a second valve needle, which move and abut against the first sub-runner and the second sub-runner. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing an injection mold for automotive mudguards with a rapid ejection mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An injection mold for a car mudguard with a quick ejection mechanism includes an upper mold plate and a lower mold plate. The upper mold plate has a molding groove recessed inward, and the lower mold plate has a molding block protruding and inserted into the molding groove. The molding block is inserted into the molding groove and forms a molding cavity with the molding groove. An injection liquid distribution plate is provided on the upper side of the upper mold plate. Several vertical injection tubes connected to the top of the molding cavity are connected to the bottom of the injection liquid distribution plate. A side injection assembly is also connected to the injection liquid distribution plate.

[0007] In the above-mentioned injection mold for a car mudguard with a quick ejection mechanism, the side injection assembly includes four No. 1 guide plates that are inclinedly arranged on the top of the upper mold plate. The No. 1 guide plate is connected to the injection liquid distribution plate. The No. 1 inclined injection tube is connected to the No. 1 guide plate. The No. 1 inclined injection tube passes through the upper mold plate and its bottom is connected to the side of the molding cavity.

[0008] In the above-mentioned automotive mudguard injection mold with a rapid ejection mechanism, the side injection assembly further includes several vertical guide tubes fixed to the bottom of the injection liquid distribution plate. The vertical guide tubes are inserted into the upper template and connected to the bottom of the second guide plate. The second guide plate is connected to the second inclined injection tube, which penetrates the upper template and its inner end is connected to the side of the molding cavity.

[0009] In the above-mentioned injection mold for a car mudguard with a quick ejection mechanism, the outer side wall of the upper mold plate is provided with several maintenance grooves corresponding to the No. 2 guide plate, the bottom of the vertical guide pipe is inserted into the maintenance groove and the No. 2 guide plate is set in the maintenance groove.

[0010] In the above-mentioned injection mold for a car mudguard with a quick ejection mechanism, two symmetrically arranged molding cavities are formed between the molding block and the molding groove. A first-side core-pulling assembly connected to the molding cavity is provided on each of the front and rear sides of the lower mold plate. Two second-side core-pulling assemblies connected to the two molding cavities are provided on the left side of the lower mold plate. A third-side core-pulling assembly connected to both molding cavities is provided on the right side of the lower mold plate.

[0011] In the above-mentioned injection mold for a car mudguard with a quick ejection mechanism, the first side core-pulling assembly includes a first core-pulling slider that is slidably connected to the lower template. The inner end of the first core-pulling slider abuts against the molding block. An inclined first driving rod is fixedly connected to the upper template. The first driving rod is inclinedly inserted into the first core-pulling slider and slidably connected to the first core-pulling slider.

[0012] In the above-mentioned injection mold for a car mudguard with a quick ejection mechanism, the second side core-pulling assembly includes a second core-pulling slider that is slidably connected to the lower template. The inner end of the second core-pulling slider abuts against the molding block. An inclined second drive rod is fixedly connected to the upper template. The second drive rod is inclinedly inserted into the second core-pulling slider and slidably connected to the second core-pulling slider.

[0013] In the above-mentioned injection mold for a car fender with a quick ejection mechanism, the No. 3 side core-pulling assembly includes a No. 3 core-pulling slider that is slidably connected to the lower mold plate. The inner end of the No. 3 core-pulling slider is simultaneously connected to two molding cavities. An inclined No. 3 driving rod is fixedly connected to the upper mold plate. The No. 3 driving rod is inclinedly inserted into the No. 3 core-pulling slider and slidably connected to the No. 3 core-pulling slider.

[0014] In the aforementioned automotive mudguard injection mold with a quick ejection mechanism, the lower mold plate is also provided with a quick ejection mechanism corresponding to the first side core-pulling assembly.

[0015] In the above-mentioned injection mold for a car mudguard with a quick ejection mechanism, the quick ejection mechanism includes an inclined ejector block, the inner end of which has a T-shaped limiting slider, the limiting slider being inserted into a limiting groove on the side of the molding block, the outer wall of the inclined ejector block abutting against the inner end of the second core-pulling slider, and the bottom of the lower mold plate being fixedly connected to a lifting cylinder connected to the inclined ejector block.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. After the injection liquid diverter divides the injection liquid, it can be injected into the molding cavity from the top of the molding cavity through the vertical injection tube. In addition, the side injection assembly connected to the injection liquid diverter can also inject the injection liquid from the side of the molding cavity through the guide. Together with the vertical injection tube, it can effectively improve the injection efficiency.

[0018] 2. The No. 1 guide plate, together with the No. 1 inclined injection tube, can guide the injection liquid in the injection liquid distribution plate to the injection cavity from the side near the upper side. The vertical guide tube, the No. 2 guide plate, and the No. 2 inclined injection tube can guide the injection liquid in the injection liquid distribution plate to the injection cavity from the side near the lower side.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 3 This is a structural diagram of the lower template;

[0023] Figure 4 This is a partial structural schematic diagram of the present invention;

[0024] Figure 5 This is a structural diagram of the No. 1 side core-pulling assembly and the rapid ejection mechanism. Detailed Implementation

[0025] like Figure 1-Figure 5 As shown, an injection mold for a car mudguard with a quick ejection mechanism includes an upper mold plate 1 and a lower mold plate 2. The upper mold plate 1 is recessed inward and has a molding groove. The lower mold plate 2 is protruding and has a molding block 3 inserted into the molding groove. The molding block 3 is inserted into the molding groove and forms a molding cavity with the molding groove. An injection liquid diversion plate 4 is provided on the upper side of the upper mold plate 1. The bottom of the injection liquid diversion plate 4 is connected to several vertical injection tubes 5 connected to the top of the molding cavity. A side injection assembly 6 is also connected to the injection liquid diversion plate 4.

[0026] In this invention, after the injection liquid diversion plate 4 diverts the injection liquid, it can be injected into the molding cavity from the top of the molding cavity through the vertical injection pipe. In addition, the side injection assembly connected to the injection liquid diversion plate can also inject the injection liquid from the side of the molding cavity through the guide. Together with the vertical injection pipe, it can effectively improve the injection efficiency.

[0027] Specifically, the side-feed assembly 6 includes four first guide plates 7 inclinedly disposed on the top of the upper mold plate 1. Each first guide plate 7 is connected to an injection molding liquid distribution plate 4. An inclined injection tube 8 is connected to each first guide plate 7, penetrating the upper mold plate 1 and connected at its bottom to the side of the molding cavity. The first guide plates 7, in conjunction with the inclined injection tubes 8, guide the injection molding liquid within the injection molding liquid distribution plate to a position near the top of the molding cavity for injection.

[0028] Specifically, the side-feeding assembly 6 also includes several vertical guide tubes 9 fixed to the bottom of the injection molding liquid distribution plate 4. The vertical guide tubes 9 are inserted into the upper mold plate 1 and connected to a second guide plate 10 at their bottom. A second inclined injection tube 11 is connected to the second guide plate 10, penetrating the upper mold plate 1 and with its inner end connected to the side of the molding cavity. The vertical guide tubes 9, the second guide plate 10, and the second inclined injection tube 11 can guide the injection molding liquid in the injection molding liquid distribution plate to a position near the lower side of the molding cavity for injection.

[0029] Preferably, the outer wall of the upper template 1 is provided with a plurality of maintenance grooves 12 corresponding to the second guide plate 10, and the bottom of the vertical guide pipe 9 is inserted into the maintenance groove 12 and the second guide plate 10 is disposed in the maintenance groove 12. The maintenance grooves on the outer wall of the upper template facilitate the maintenance of the second guide plate.

[0030] Specifically, two symmetrically arranged molding cavities are formed between the molding block 3 and the molding groove. A first-side core-pulling assembly 13 connected to each molding cavity is provided on both the front and rear sides of the lower mold plate 2. Two second-side core-pulling assemblies 14, each connected to one of the two molding cavities, are provided on the left side of the lower mold plate 2. A third-side core-pulling assembly 15, simultaneously connected to both molding cavities, is provided on the right side of the lower mold plate 2. The first-side core-pulling assembly 13, the second-side core-pulling assembly 14, and the third-side core-pulling assembly 15 can achieve automatic core pulling during mold opening.

[0031] Specifically, the first side core-pulling assembly 13 includes a first core-pulling slider 16 slidably connected to the lower template 2. The inner end of the first core-pulling slider 16 abuts against the molding block 3. An inclined first driving rod 17 is fixedly connected to the upper template 1. The first driving rod 17 is inclinedly inserted into the first core-pulling slider 16 and slidably connected to the first core-pulling slider 16. When the mold is opened, the upper template moves upward, which can drive the first core-pulling slider to move away from the molding cavity to achieve automatic core pulling.

[0032] Specifically, the second side core-pulling assembly 14 includes a second core-pulling slider 18 slidably connected to the lower template 2. The inner end of the second core-pulling slider 18 abuts against the molding block 3. An inclined second drive rod 19 is fixedly connected to the upper template 1. The second drive rod 19 is inclinedly inserted into the second core-pulling slider 18 and slidably connected to it. When the mold opens, the upper template moves upward, which drives the second core-pulling slider to move away from the molding cavity to achieve automatic core pulling.

[0033] Specifically, the third side core-pulling assembly 15 includes a third core-pulling slider 20 slidably connected to the lower mold plate 2. The inner end of the third core-pulling slider 20 is simultaneously connected to two molding cavities. An inclined third drive rod 21 is fixedly connected to the upper mold plate 1. The third drive rod 21 is inclinedly inserted into the third core-pulling slider 20 and slidably connected to the third core-pulling slider 20. During mold opening, the upper mold plate moves upward, which drives the third core-pulling slider to move away from the molding cavity to achieve automatic core pulling.

[0034] Preferably, the lower mold plate 2 is also provided with a quick ejection mechanism corresponding to the first side core-pulling assembly 13. The quick ejection mechanism includes an inclined ejector block 22, the inner end of which has a T-shaped limiting slider 23. The limiting slider 23 is inserted into the limiting groove on the side of the molding block 3. The outer wall of the inclined ejector block 22 abuts against the inner end of the second core-pulling slider 18. The bottom of the lower mold plate 2 is fixedly connected to a lifting cylinder 24 connected to the inclined ejector block 22. After the product is injection molded, the lifting cylinder drives the inclined ejector block to move obliquely upward to quickly eject the product. The limiting slider, in conjunction with the limiting groove, can limit and guide the inclined ejector block.

[0035] The working principle of this utility model is as follows: After the injection liquid diversion plate 4 diverts the injection liquid, it can be injected into the molding cavity from the top of the molding cavity through the vertical injection pipe. In addition, the side injection assembly connected to the injection liquid diversion plate can also inject the injection liquid from the side of the molding cavity through the guide. Combined with the vertical injection pipe, it can effectively improve the injection efficiency.

[0036] The No. 1 guide plate 7, together with the No. 1 inclined injection pipe 8, can guide the injection liquid in the injection liquid distribution plate to the injection point near the upper side of the molding cavity. The vertical guide pipe 9, the No. 2 guide plate 10, and the No. 2 inclined injection pipe 11 can guide the injection liquid in the injection liquid distribution plate to the injection point near the lower side of the molding cavity. The maintenance groove opened on the outer wall of the upper template can facilitate the maintenance of the No. 2 guide plate.

[0037] The No. 1 side core-pulling assembly 13, the No. 2 side core-pulling assembly 14, and the No. 3 side core-pulling assembly 15 can achieve automatic core pulling during mold opening. When the mold opens, the upward movement of the upper mold plate can drive the No. 1 core-pulling slider to move away from the molding cavity to achieve automatic core pulling. The upward movement of the upper mold plate can drive the No. 2 core-pulling slider to move away from the molding cavity to achieve automatic core pulling. The upward movement of the upper mold plate can drive the No. 3 core-pulling slider to move away from the molding cavity to achieve automatic core pulling. After the product is injection molded, the lifting cylinder drives the inclined ejector block to move obliquely upward to quickly eject the product. The limiting slider and the limiting groove can limit and guide the inclined ejector block.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An injection mold for an automobile mudguard with a rapid ejection mechanism, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that, The upper template (1) is recessed inward and has a molding groove. The lower template (2) is protruding and has a molding block (3) inserted into the molding groove. The molding block (3) is inserted into the molding groove and forms a molding cavity with the molding groove. The upper side of the upper template (1) is provided with an injection liquid diversion plate (4). The bottom of the injection liquid diversion plate (4) is connected to several vertical injection pipes (5) connected to the top of the molding cavity. The injection liquid diversion plate (4) is also connected to a side injection assembly (6).

2. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 1, characterized in that, The side injection assembly (6) includes four first guide plates (7) inclinedly arranged on the top of the upper template (1). The first guide plates (7) are connected to the injection liquid distribution plate (4). The first guide plates (7) are connected to the first inclined injection tube (8). The first inclined injection tube (8) passes through the upper template (1) and its bottom is connected to the side of the molding cavity.

3. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 2, characterized in that, The side injection assembly (6) also includes several vertical guide tubes (9) fixed at the bottom of the injection liquid distribution plate (4). The vertical guide tubes (9) are inserted into the upper template (1) and connected to the bottom of the second guide plate (10). The second guide plate (10) is connected to the second inclined injection tube (11). The second inclined injection tube (11) passes through the upper template (1) and its inner end is connected to the side of the molding cavity.

4. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 3, characterized in that, The outer side wall of the upper template (1) is provided with several maintenance slots (12) corresponding to the second guide plate (10). The bottom of the vertical guide pipe (9) is inserted into the maintenance slot (12) and the second guide plate (10) is set in the maintenance slot (12).

5. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 1, characterized in that, Two symmetrically arranged molding cavities are formed between the molding block (3) and the molding groove. A first side core-pulling assembly (13) connected to the molding cavity is provided on each of the front and rear sides of the lower template (2). Two second side core-pulling assemblies (14) connected to the two molding cavities are provided on the left side of the lower template (2). A third side core-pulling assembly (15) connected to both molding cavities is provided on the right side of the lower template (2).

6. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 5, characterized in that, The first side core-pulling assembly (13) includes a first core-pulling slider (16) that is slidably connected to the lower template (2). The inner end of the first core-pulling slider (16) abuts against the molding block (3). An inclined first driving rod (17) is fixedly connected to the upper template (1). The first driving rod (17) is inclinedly inserted into the first core-pulling slider (16) and slidably connected to the first core-pulling slider (16).

7. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 5, characterized in that, The second side core-pulling assembly (14) includes a second core-pulling slider (18) that is slidably connected to the lower template (2). The inner end of the second core-pulling slider (18) abuts against the molding block (3). An inclined second drive rod (19) is fixedly connected to the upper template (1). The second drive rod (19) is inclinedly inserted into the second core-pulling slider (18) and slidably connected to the second core-pulling slider (18).

8. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 5, characterized in that, The third side core-pulling assembly (15) includes a third core-pulling slider (20) that is slidably connected to the lower template (2). The inner end of the third core-pulling slider (20) is simultaneously connected to two molding cavities. An inclined third drive rod (21) is fixedly connected to the upper template (1). The third drive rod (21) is inclinedly inserted into the third core-pulling slider (20) and slidably connected to the third core-pulling slider (20).

9. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 6, characterized in that, The lower template (2) is also provided with a quick ejection mechanism corresponding to the first side core-pulling assembly (13).

10. The automotive mudguard injection mold with a rapid ejection mechanism according to claim 9, characterized in that, The rapid ejection mechanism includes an inclined ejector block (22), the inner end of which has a T-shaped limiting slider (23), the limiting slider (23) is inserted into the limiting groove on the side of the forming block (3), the outer wall of the inclined ejector block (22) abuts against the inner end of the second core-pulling slider (18), and the bottom of the lower template (2) is fixedly connected to a lifting cylinder (24) connected to the inclined ejector block (22).

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