Anti-flash structure for injection molding of multicolor car lamp

Abstract

The utility model relates to the technical field of injection molding, and provides an anti-flash structure for injection molding of a multicolor car lamp, which comprises a lower mold body and an upper mold body arranged above the lower mold body, the injection mold cavity is formed in the top of the lower mold body; the two sliding grooves are symmetrically formed in the inner wall of the injection mold cavity, and removing mechanisms used for cutting injection molding flash are arranged in the sliding grooves. The upper die body drives the removing mechanism to move downwards to carry out anti-flash treatment on materials, meanwhile, the removing mechanism presses the arc-shaped baffle and the filling check block downwards to enable the arc-shaped baffle and the filling check block to enter the containing groove and compress the first spring, and after the material forming upper die body and the removing mechanism move upwards, the first spring drives the arc-shaped baffle and the filling check block to move upwards to reset. And the arc-shaped baffle and the filling stop block shield the sliding groove again, so that the effect of shielding and blocking prevention on the sliding groove is achieved, and the treatment effect and efficiency of injection molding and flash prevention are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to an anti-flash structure for injection molding of multi-color automotive lights. Background Technology

[0002] Injection molding is a method of industrial product manufacturing. Products are typically produced using rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding compression molding and die casting. An injection molding machine is the main molding equipment used to create various shapes of plastic products from thermoplastic or thermosetting materials using plastic molds. Injection molding is achieved through an injection molding machine and molds.

[0003] The patent application with application number CN202323484507.2 discloses a mold for a car headlight sealing ring that can prevent flash. The background technology states that "most existing mold opening and closing machines do not have an automatic flash removal mechanism. After the mold is processed, flash is mostly removed manually. During the manual trimming process, flash residue is easily caused and the body is damaged. The flash removal effect is not good and it is inconvenient." To solve this problem, the technical solution is "including a mold assembly and support components set on the four corners of the upper end of the mold assembly, and a stamping component is set on the upper end of the support components".

[0004] However, the following problems were found in the implementation of the above technical solution: Although the provided technical solution achieves the effect of removing and preventing flash, it is not convenient to block and prevent blockage of the sliding groove during use. During use, since the T-shaped connecting block and the sliding groove are slidably connected, and the sliding groove has an opening that connects to the injection mold cavity, when the material enters the injection mold cavity, the material will enter the sliding groove, causing the material to accumulate and block the sliding groove. This can easily affect the use of the removal component, thereby reducing the effect and efficiency of the anti-flash treatment. Utility Model Content

[0005] This utility model proposes an anti-flash structure for injection molding of multi-color vehicle lights, which solves the problem in related technologies that it is inconvenient to cover and prevent blockage of the sliding groove.

[0006] The technical solution of this utility model is as follows: a multi-color vehicle light injection molding anti-flash structure, comprising: a lower mold body and an upper mold body disposed above it;

[0007] An injection mold cavity located at the top of the lower mold body;

[0008] Two sliding grooves are symmetrically opened on the inner wall of the injection mold cavity, and the sliding grooves are equipped with a removal mechanism for cutting off the injection flash;

[0009] A storage slot is formed within the lower mold body and corresponds to the sliding groove;

[0010] Guide grooves are formed on both sides of the inner wall of the sliding groove and are connected to the storage groove;

[0011] Two springs are symmetrically and fixedly connected to the bottom wall of the storage slot.

[0012] An arc-shaped baffle that is fixedly connected to one end of a spring and slides with a guide groove;

[0013] And a filling block fixedly connected to the inner surface of the arc-shaped baffle and adapted to the shape of the injection mold cavity, wherein the filling block and the sliding groove and the receiving groove are sealed and slidably connected.

[0014] Preferably, the removal mechanism includes a second spring fixedly installed on the bottom wall of the sliding groove, a connecting block fixedly connected to the top of the second spring and slidably connected to the sliding groove, an annular block fixedly connected to one side of the connecting block, and a pressing ring fixedly connected to the bottom of the annular block, wherein the connecting block and the arc-shaped baffle abut against each other.

[0015] Preferably, a plurality of guide rods are fixedly installed on the top of the lower mold body, and the plurality of guide rods are distributed in a matrix at the four corners of the lower mold body, and the upper mold body is slidably connected to the surface of the guide rods.

[0016] Preferably, an injection casting pipe is fixedly installed on the top of the upper mold body, and a casting hopper is threadedly connected to the top surface of the injection casting pipe.

[0017] Preferably, the lower mold body is provided with a compaction mechanism for eliminating air bubbles in the injection molding material.

[0018] The compaction mechanism includes a guide rail fixedly installed on one side of the lower mold body, a slider slidably engaged with the surface of the guide rail, a rack fixedly connected to one side of the slider, collision plates fixedly connected to both ends of the rack, a fixing block fixedly connected to one side of the lower mold body, a spring three fixedly connected to one side of the fixing block and connected to a collision plate, and a drive component provided on the lower mold body.

[0019] The driving component includes a motor fixedly mounted on one side of the lower mold body via a bracket, and a half gear fixedly connected to the output end of the motor and meshing with a rack.

[0020] The working principle and beneficial effects of this utility model are as follows:

[0021] In use, the arc-shaped baffle and filling block can block the sliding groove to prevent material from entering it. Then, the upper mold body moves downwards and the lower mold body closes, causing the removal mechanism to move downwards to prevent flash from forming. Simultaneously, the removal mechanism presses down on the arc-shaped baffle and filling block, causing them to enter the receiving groove and compress the first spring. After the material is formed, the upper mold body and the removal mechanism move upwards, and the first spring causes the arc-shaped baffle and filling block to move upwards and reset, blocking the sliding groove again. This achieves the effect of blocking and preventing blockage of the sliding groove, avoiding material accumulation that could affect the removal mechanism's operation, ensuring its effectiveness, and significantly improving the processing effect and efficiency of anti-flash treatment in injection molding. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0024] Figure 2 This is a partial three-dimensional structural diagram of the lower mold body of this utility model;

[0025] Figure 3 This is a partial three-dimensional structural diagram of the arc-shaped baffle of this utility model;

[0026] Figure 4 This is a partial three-dimensional structural diagram of the annular block of this utility model;

[0027] Figure 5 This is a partial three-dimensional structural diagram of the tamping mechanism of this utility model;

[0028] In the diagram: 1. Lower mold body; 2. Upper mold body; 3. Injection mold cavity; 4. Sliding groove; 5. Storage groove; 6. Spring 1; 7. Arc-shaped baffle; 8. Filling block; 9. Spring 2; 10. Connecting block; 11. Ring block; 12. Pressing ring; 13. Guide rod; 14. Injection casting pipe; 15. Casting hopper; 16. Guide rail; 17. Slider; 18. Rack; 19. Collision plate; 20. Fixing block; 21. Spring 3; 22. Motor; 23. Half gear. Detailed Implementation

[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0030] Example 1

[0031] Please see Figure 1 - Figure 5 The anti-flash structure for multi-color car light injection molding provided by this utility model includes: a lower mold body 1 and an upper mold body 2 disposed above it, wherein the upper mold body 2 is driven to rise and fall by an external power component so as to close or separate from the lower mold body 1.

[0032] The injection cavity 3 is located at the top of the lower mold body 1;

[0033] Two sliding grooves 4 are symmetrically opened on the inner wall of the injection mold cavity 3, and the sliding grooves 4 are equipped with a removal mechanism for cutting off the injection flash;

[0034] A storage slot 5 is formed inside the lower mold body 1 and corresponds to the sliding groove 4;

[0035] Guide grooves are formed on both sides of the inner wall of the sliding groove 4 and are connected to the storage groove 5;

[0036] Two springs 6 are symmetrically and fixedly connected to the bottom wall of the storage slot 5;

[0037] An arc-shaped baffle 7 is fixedly connected to the top of the spring 6 and slides in relation to the guide groove, wherein the arc-shaped baffle 7 is sealed to the sliding groove 4 and the receiving groove 5.

[0038] And a filling block 8 is fixedly connected to the inner surface of the arc-shaped baffle 7 and adapted to the shape of the injection mold cavity 3. The filling block 8 and the sliding groove 4 are sealed and slidably connected to the receiving groove 5.

[0039] The technical solution provided in this embodiment is as follows: In use, the multi-color car light injection material is entered into the injection mold cavity 3. At this time, under the combined action of the arc-shaped baffle 7 and the filling block 8, the sliding groove 4 can be blocked to prevent the material from entering the sliding groove 4. Then, the upper mold body 2 is driven to move down and the lower mold body 1 is closed by the external driving component to perform injection molding of the material. During the downward movement of the upper mold body 2, the removal mechanism can be driven to move down, so that the material can be treated to prevent flash. At the same time, the downward movement of the removal mechanism can press down the arc-shaped baffle 7 and the filling block 8. This causes both materials to move downwards into the receiving groove 5, and are compressed by the arc-shaped baffle 7 and the spring 6. When the material forming mold body 2 moves upwards, the removal mechanism moves upwards and resets. At the same time, under the action of the spring 6, the arc-shaped baffle 7 and the filling block 8 can move upwards and reset, so that the arc-shaped baffle 7 and the filling block 8 block the sliding groove 4 again. Thus, the sliding groove 4 is blocked to prevent blockage, and the material is prevented from entering the sliding groove 4 and accumulating, which affects the use of the removal mechanism. This ensures the use of the removal mechanism and effectively improves the processing effect and efficiency of injection molding anti-flash.

[0040] Furthermore, the removal mechanism includes a second spring 9 fixedly installed on the bottom wall of the sliding groove 4, a connecting block 10 fixedly connected to the top of the second spring 9 and slidably connected to the sliding groove 4, an annular block 11 fixedly connected to one side of the connecting block 10, and a pressing ring 12 fixedly connected to the bottom of the annular block 11. The connecting block 10 and the arc-shaped baffle 7 abut against each other. The connecting block 10 and the sliding groove 4 are both T-shaped and are sealed together.

[0041] Specifically, after the material enters the injection mold cavity 3, the upper mold body 2 moves down and closes with the lower mold body 1 to form the material. During the downward movement of the upper mold body 2, it contacts the annular block 11 and drives the annular block 11 and the pressure ring 12 to move down. At the same time, the annular block 11 drives the connecting block 10 to move down in the sliding groove 4 to compress the second spring 9. Thus, the pressure ring 12 can intercept and cut off the material edge in the injection mold cavity 3. After the material is injection molded, the upper mold body 2 moves up, and the connecting block 10 can drive the annular block 11 to move up and reset under the action of the second spring 9. This achieves the function of removing flash and preventing flash from being generated.

[0042] Furthermore, multiple guide rods 13 are fixedly installed on the top of the lower mold body 1. The multiple guide rods 13 are distributed in a matrix at the four corners of the lower mold body 1, and the upper mold body 2 is slidably connected to the surface of the guide rods 13.

[0043] Specifically, by setting guide rod 13, the upper mold body 2 can be guided and limited during its lifting and lowering movement to ensure the stability of the upper mold body 2's movement.

[0044] Furthermore, an injection casting pipe 14 is fixedly installed on the top of the upper mold body 2, and a casting hopper 15 is threadedly connected to the top surface of the injection casting pipe 14.

[0045] Specifically, the material for the car headlight injection is fed into the injection casting pipe 14 through the casting hopper 15, and then the material enters the injection mold cavity 3 through the mold inner channel for subsequent injection molding.

[0046] Example 2

[0047] Based on Example 1, in this example: further, the lower mold body 1 is provided with a compaction mechanism for eliminating air bubbles in the injection molding material.

[0048] The compaction mechanism includes a guide rail 16 fixedly installed on one side of the lower mold body 1, a slider 17 slidably engaged with the surface of the guide rail 16, a rack 18 fixedly connected to one side of the slider 17, collision plates 19 fixedly connected to both ends of the rack 18, a fixing block 20 fixedly connected to one side of the lower mold body 1, a spring 21 fixedly connected to one side of the fixing block 20 and connected to a collision plate 19, and a drive component provided on the lower mold body 1. A rubber pad is installed on one side of the collision plate 19.

[0049] The driving components include a motor 22 fixedly mounted on one side of the lower mold body 1 via a bracket, and a half gear 23 fixedly connected to the output end of the motor 22 and meshing with the rack 18.

[0050] The technical solution provided in this embodiment is as follows: After the material enters the injection mold cavity 3, the motor 22 drives the half gear 23 to rotate. The half gear 23 drives the rack 18 and the slider 17 to move to one side along the guide rail 16. At this time, one collision plate 19 will strike one side of the lower mold body 1 and compress the spring 3 21. At the same time, the other collision plate 19 moves away from the lower mold body 1. When the half gear 23 and the rack 18 separate, the spring 3 21 rebounds, causing the collision plate 19 that moves away from the lower mold body 1 to rebound and strike the other side of the lower mold body 1. The other one moves away. This process is repeated to make the lower mold body 1 vibrate, so that no air bubbles are generated in the material in the injection mold cavity 3, ensuring that the injection material can be tightly bonded and avoiding phenomena such as honeycomb bubbles that affect product quality.

[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A structure for preventing flash during injection molding of multi-color automotive lights, characterized in that, include: The lower mold body (1) and the upper mold body (2) located above it; The injection cavity (3) is located at the top of the lower mold body (1); Two sliding grooves (4) are symmetrically opened on the inner wall of the injection mold cavity (3), and the sliding grooves (4) are provided with a removal mechanism for cutting off the injection flash; A storage slot (5) is formed inside the lower mold body (1) and corresponds to the sliding groove (4); Guide grooves are formed on both sides of the inner wall of the sliding groove (4) and connected to the storage groove (5); Two springs (6) are symmetrically fixed to the bottom wall of the storage slot (5); An arc-shaped baffle (7) is fixedly connected to the top of spring 1 (6) and slides with the guide groove; And a filling block (8) fixedly connected to the inner surface of the arc-shaped baffle (7) and adapted to the shape of the injection mold cavity (3), wherein the filling block (8) and the sliding groove (4) are sealed and slidably connected to the receiving groove (5).

2. The anti-flash structure for multi-color automotive light injection molding according to claim 1, characterized in that, The removal mechanism includes a second spring (9) fixedly installed on the bottom wall of the sliding groove (4), a connecting block (10) fixedly connected to the top of the second spring (9) and slidably connected to the sliding groove (4), an annular block (11) fixedly connected to one side of the connecting block (10), and a pressing ring (12) fixedly connected to the bottom of the annular block (11). The connecting block (10) and the arc-shaped baffle (7) abut against each other.

3. The anti-flash structure for multi-color automotive light injection molding according to claim 1, characterized in that, Multiple guide rods (13) are fixedly installed on the top of the lower mold body (1). The multiple guide rods (13) are distributed in a matrix at the four corners of the lower mold body (1). The upper mold body (2) is slidably connected to the surface of the guide rods (13).

4. The anti-flash structure for multi-color automotive light injection molding according to claim 1, characterized in that, The top of the upper mold body (2) is fixedly installed with an injection casting pipe (14), and the top surface of the injection casting pipe (14) is threadedly connected with a casting hopper (15).

5. The anti-flash structure for multi-color automotive light injection molding according to claim 1, characterized in that, The lower mold body (1) is provided with a compaction mechanism for eliminating air bubbles in the injection molding material.

6. The anti-flash structure for multi-color automotive light injection molding according to claim 5, characterized in that, The compaction mechanism includes a guide rail (16) fixedly installed on one side of the lower mold body (1), a slider (17) slidably engaged on the surface of the guide rail (16), a rack (18) fixedly connected to one side of the slider (17), collision plates (19) fixedly connected to both ends of the rack (18), a fixing block (20) fixedly connected to one side of the lower mold body (1), a spring three (21) fixedly connected to one side of the fixing block (20) and connected to a collision plate (19), and a driving component provided on the lower mold body (1).

7. The anti-flash structure for multi-color automotive light injection molding according to claim 6, characterized in that, The driving component includes a motor (22) fixedly mounted on one side of the lower mold body (1) by a bracket, and a half gear (23) fixedly connected to the output end of the motor (22) and meshing with the rack (18).

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