A kind of child safety seat buckle injection mold buffering structure prevents pinching

Abstract

The utility model relates to injection mold technical field discloses a kind of anti-pinch child safety seat buckle injection mold buffer structure, including shell, the inner wall of shell is fixedly connected with rotating shaft, the outer wall of rotating shaft is rotatably connected with gear, the outer wall of gear is engagedly connected with rack one, the inner wall of shell is slidably connected in the outer wall of rack one, the upper surface of rack one is fixedly connected with upper cover, the inner wall of rack one is slidably connected with rack two, the upper surface of rack two is fixedly connected with fixed block, the outer wall of fixed block is provided with spring one, one end of spring one is fixedly connected in the upper surface of rack two, the outer wall of shell is equipped with mold assembly. In the utility model, limit rod promotes upper cover to make rack one slide, rack one drives gear rotation to make rack two slide simultaneously, the elastic deformation of spring one will be caused by the movement of both, thus can reach the effect of buffering upper die impact force, prolongs the service life of mold.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a buffer structure for an injection mold of a child safety seat buckle to prevent pinching injuries. Background Technology

[0002] Child safety seat buckles are important components used to secure child safety seats. Using a buffer structure in the injection mold of anti-pinch child safety seat buckles can improve product quality and extend mold life. Traditional buffer structures in the injection mold of anti-pinch child safety seat buckles have limited buffering effect, slow response speed, large space occupation, and high maintenance costs. To meet the buffering requirements of modern injection molds, a new type of buffer structure in the injection mold of anti-pinch child safety seat buckles is used.

[0003] In the existing technology, traditional injection molds have fewer buffer components in their buffer structure, resulting in weak protection for the mold during injection operations. This leads to a reduction in the mold's lifespan after multiple injection cycles. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a buffer structure for an injection mold of a child safety seat buckle to prevent pinching injuries. It aims to solve the problem that existing molds, due to the lack of an effective buffer structure, will experience reduced mold life when the upper and lower molds are connected, as the impact force cannot be relieved.

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

[0006] A child safety seat buckle injection mold buffer structure includes a housing. A rotating shaft is fixedly connected to the inner wall of the housing. A gear is rotatably connected to the outer wall of the rotating shaft. A rack is meshed with the outer wall of the gear. The outer wall of rack one is slidably connected to the inner wall of the housing. A top cover is fixedly connected to the upper surface of rack one. The lower surface of the top cover is slidably connected to the upper surface of the housing. A rack two is slidably connected to the inner wall of rack one. The tooth end of rack two meshes with the tooth end of the gear. The outer wall of rack two is slidably connected to the inner wall of the housing. A fixing block is fixedly connected to the upper surface of rack two. The upper surface of the fixing block is fixedly connected to the lower surface of rack one. A spring is disposed on the outer wall of the fixing block. One end of spring one is fixedly connected to the upper surface of rack two, and the other end of spring one is fixedly connected to the lower surface of rack one. A mold assembly is provided on the outer wall of the housing.

[0007] Preferably, the mold assembly includes a lower mold, the inner wall of which is fixedly connected to the outer wall of the outer shell, a bracket is fixedly connected to the lower surface of the lower mold, a hydraulic rod is fixedly connected to the inner top wall of the bracket, an upper mold is fixedly mounted at the output end of the hydraulic rod, and the outer wall of the upper mold is slidably connected to the inner wall of the lower mold.

[0008] Preferably, a limiting rod is fixedly connected to the lower surface of the hydraulic rod, the outer wall of the limiting rod is slidably connected to the inner wall of the lower mold, and the lower surface of the limiting rod is slidably connected to the upper surface of the upper cover.

[0009] Preferably, a push rod is slidably connected to the inner wall of the lower mold, and a second spring is provided on the outer wall of the push rod, with the upper end of the second spring fixedly connected to the inner wall of the lower mold.

[0010] Preferably, the lower end of the second spring is fixedly connected to a push plate, and the outer wall of the push plate is disposed on the inner wall of the push rod.

[0011] Preferably, a connecting shaft is fixedly connected to the inner wall of the push plate, and the outer wall of the connecting shaft is slidably connected to the inner wall of the push rod.

[0012] Preferably, a rotating block is slidably connected to the outer wall of the push plate, and the outer wall of the rotating block is slidably connected to the inner wall of the lower mold.

[0013] Preferably, the inner wall of the rotating block is rotatably connected to a fixed shaft, both ends of which are fixedly connected to the inner wall of the lower mold. The upper surface of the rotating block is fixedly connected to a gripper, and the outer wall of the gripper is slidably connected to the inner wall of the upper mold.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the limiting rod pushes the upper cover to make rack one slide on the inner wall of the outer shell. Rack one drives the gear to rotate on the outer wall of the rotating shaft, so that rack two slides on the inner wall of the outer shell at the same time. The movement of the two will cause spring one to undergo elastic deformation, thereby achieving the effect of buffering the impact force of the upper mold and extending the service life of the mold.

[0016] 2. In this utility model, when the upper mold is pressed down, it will push the push rod to drive the connecting shaft to move the push plate. At the same time, the second spring undergoes elastic deformation. The movement of the push plate drives the rotating block to rotate on the outer wall of the fixed shaft, thereby clamping the upper mold with the gripper. This can fix the mold, improve the yield rate, and achieve the effect of automatic demolding. Attached Figure Description

[0017] Figure 1 This is a perspective view of the buffer structure of the injection mold for the anti-pinch child safety seat buckle proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the upper cover of the injection mold buffer structure for the anti-pinch child safety seat buckle proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the upper mold of the buffer structure of the injection mold for the anti-pinch child safety seat buckle proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the push plate of the injection mold buffer structure for the anti-pinch child safety seat buckle proposed in this utility model.

[0021] Legend:

[0022] 1. Outer shell; 11. Rotating shaft; 12. Gear; 13. Rack 1; 14. Top cover; 15. Rack 2; 16. Fixing block; 17. Spring 1; 2. Lower mold; 21. Bracket; 22. Hydraulic rod; 23. Upper mold; 24. Limiting rod; 3. Push rod; 31. Spring 2; 32. Push plate; 33. Connecting shaft; 34. Rotating block; 35. Fixing shaft; 36. Gripper. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figures 1-3This utility model provides an embodiment of a child safety seat buckle injection mold buffer structure, comprising a shell 1, a rotating shaft 11 fixedly connected to the inner wall of the shell 1, a gear 12 rotatably connected to the outer wall of the rotating shaft 11, a rack 13 meshing with the outer wall of the gear 12, the outer wall of the rack 13 slidably connected to the inner wall of the shell 1, a top cover 14 fixedly connected to the upper surface of the rack 13, the lower surface of the top cover 14 slidably connected to the upper surface of the shell 1, a rack 15 slidably connected to the inner wall of the rack 13, the tooth end of the rack 15 meshing with the tooth end of the gear 12, the outer wall of the rack 15 slidably connected to the inner wall of the shell 1, and a fixing block 16 fixedly connected to the upper surface of the rack 15. On the lower surface of 13, a spring 17 is provided on the outer wall of the fixing block 16. One end of the spring 17 is fixedly connected to the upper surface of the rack 15, and the other end of the spring 17 is fixedly connected to the lower surface of the rack 13. The outer wall of the outer shell 1 is provided with a mold assembly. The mold assembly includes a lower mold 2. The inner wall of the lower mold 2 is fixedly connected to the outer wall of the outer shell 1. A bracket 21 is fixedly connected to the lower surface of the lower mold 2. A hydraulic rod 22 is fixedly connected to the inner top wall of the bracket 21. An upper mold 23 is fixedly provided at the output end of the hydraulic rod 22. The outer wall of the upper mold 23 is slidably connected to the inner wall of the lower mold 2. A limit rod 24 is fixedly connected to the lower surface of the hydraulic rod 22. The outer wall of the limit rod 24 is slidably connected to the inner wall of the lower mold 2, and the lower surface of the limit rod 24 is slidably connected to the upper surface of the upper cover 14.

[0025] Specifically, when the upper and lower molds are connected, the limiting rod 24 sliding on the inner wall of the lower mold 2 will push the upper cover 14 to make the rack 13 slide on the inner wall of the outer shell 1. While the rack 13 slides, it can drive the gear 12 to rotate on the outer wall of the rotating shaft 11, thereby driving the rack 15 to slide on the inner wall of the outer shell 1 at the same time. When the two move, the fixed spring 17 will undergo elastic deformation. The fixed block 16 can limit the movement trajectory of the spring 17 and prevent the spring 17 from deviating. This can buffer the downward pressure of the upper mold 23 on the lower mold 2, thereby extending the service life of the mold. The hydraulic rod 22 fixed on the inner top wall of the bracket 21 will push the upper mold 23 down. The positioning rod and spring on it can initially achieve the effect of buffering the downward pressure.

[0026] Reference Figure 1 and Figure 4 A push rod 3 is slidably connected to the inner wall of the lower mold 2. A spring 31 is provided on the outer wall of the push rod 3. The upper end of the spring 31 is fixedly connected to the inner wall of the lower mold 2. A push plate 32 is fixedly connected to the lower end of the spring 31. The outer wall of the push plate 32 is provided on the inner wall of the push rod 3.

[0027] Specifically, when the upper mold 23 and the lower mold 2 are connected, the push rod 3 can be pushed to slide on the inner wall of the lower mold 2. The movement of the push rod 3 will drive the connecting shaft 33 to move at the same time, causing the push plate 32 to move downward. The movement of the two will cause the spring 31 fixed on the inner wall of the lower mold 2 to undergo elastic deformation, thereby providing power for the return of the push rod 3.

[0028] Reference Figure 4 A connecting shaft 33 is fixedly connected to the inner wall of the push plate 32, and the outer wall of the connecting shaft 33 is slidably connected to the inner wall of the push rod 3; a rotating block 34 is slidably connected to the outer wall of the push plate 32, and the outer wall of the rotating block 34 is slidably connected to the inner wall of the lower mold 2; a fixed shaft 35 is rotatably connected to the inner wall of the rotating block 34, and both ends of the fixed shaft 35 are fixedly connected to the inner wall of the lower mold 2; a gripper 36 is fixedly connected to the upper surface of the rotating block 34, and the outer wall of the gripper 36 is slidably connected to the inner wall of the upper mold 23.

[0029] Specifically, the movement of the push plate 32 can drive the rotating block 34 to rotate on the outer wall of the fixed shaft 35. The rotation of the rotating block 34 can make the gripper 36 rotate synchronously. A groove is provided on the inner wall of the upper mold 23. When the protrusion on the gripper 36 is engaged in the groove, the lower mold 2 and the upper mold 23 can be connected more tightly, thereby improving the injection molding yield and achieving automatic demolding.

[0030] Working principle: When this structure is needed, the hydraulic rod 22 fixed to the inner top wall of the bracket 21 drives the upper mold 23 to press down, which causes the spring on the positioning post to undergo elastic deformation as a preliminary buffer. The limiting rod 24 fixed to the lower surface of the upper mold 23 slides in the hole opened in the inner wall of the lower mold 2. The outer shell 1 is set in the hole. The pressing down of the limiting rod 24 pushes the upper cover 14, causing the rack 13 to slide on the inner wall of the outer shell 1. At the same time, the movement of the rack 13 can drive the gear 12 to rotate on the outer wall of the rotating shaft 11, so that the rack 25 can slide on the inner wall of the outer shell 1. The movement of the two can cause the spring 17 to undergo elastic deformation. The fixing block 16 set on the outer wall of the rack 13 and the rack 25 can limit the movement trajectory of the spring 17 to prevent deviation. This can buffer the impact force of the upper mold 23 and extend the service life of the mold.

[0031] While pressing down, the upper mold 23 causes the push rod 3 to slide on the inner wall of the lower mold 2. The spring 31 on its outer wall undergoes elastic deformation, thereby providing power for the push rod 3 to return to its original position. The movement of the push rod 3 drives the connecting shaft 33 to move, causing the push plate 32 to move synchronously. The movement of the push plate 32 drives the rotating block 34 to rotate stably on the outer wall of the fixed shaft 35. The movement of the fixed shaft 35 can simultaneously drive the gripper 36 to rotate. A groove is provided on the inner wall of the upper mold 23. The protruding part of the gripper 36 is stuck inside the groove. This structure can buffer the downward pressure of the upper mold 23 on the lower mold 2, and at the same time, improve the yield and achieve automatic demolding.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A child safety seat buckle injection mold buffer structure for preventing pinching injuries, comprising a shell (1), characterized in that: A rotating shaft (11) is fixedly connected to the inner wall of the outer shell (1). A gear (12) is rotatably connected to the outer wall of the rotating shaft (11). A rack (13) is meshed with the outer wall of the gear (12). The outer wall of the rack (13) is slidably connected to the inner wall of the outer shell (1). A top cover (14) is fixedly connected to the upper surface of the rack (13). The lower surface of the top cover (14) is slidably connected to the upper surface of the outer shell (1). A rack (15) is slidably connected to the inner wall of the rack (13). The tooth ends of the rack (15) are meshed with... At the tooth end of the gear (12), the outer wall of the second rack (15) is slidably connected to the inner wall of the outer shell (1). A fixing block (16) is fixedly connected to the upper surface of the second rack (15). The upper surface of the fixing block (16) is fixedly connected to the lower surface of the first rack (13). A spring (17) is provided on the outer wall of the fixing block (16). One end of the spring (17) is fixedly connected to the upper surface of the second rack (15), and the other end of the spring (17) is fixedly connected to the lower surface of the first rack (13). A mold assembly is provided on the outer wall of the outer shell (1).

2. The anti-pinch child safety seat buckle injection mold buffer structure according to claim 1, characterized in that: The mold assembly includes a lower mold (2), the inner wall of which is fixedly connected to the outer wall of the outer shell (1), a bracket (21) is fixedly connected to the lower surface of the lower mold (2), a hydraulic rod (22) is fixedly connected to the inner top wall of the bracket (21), an upper mold (23) is fixedly provided at the output end of the hydraulic rod (22), and the outer wall of the upper mold (23) is slidably connected to the inner wall of the lower mold (2).

3. The anti-pinch child safety seat buckle injection mold buffer structure according to claim 2, characterized in that: The lower surface of the hydraulic rod (22) is fixedly connected to a limiting rod (24), the outer wall of the limiting rod (24) is slidably connected to the inner wall of the lower mold (2), and the lower surface of the limiting rod (24) is slidably connected to the upper surface of the upper cover (14).

4. The anti-pinch child safety seat buckle injection mold buffer structure according to claim 3, characterized in that: The inner wall of the lower mold (2) is slidably connected to a push rod (3), and the outer wall of the push rod (3) is provided with a spring (31), the upper end of which is fixedly connected to the inner wall of the lower mold (2).

5. The anti-pinch child safety seat buckle injection mold buffer structure according to claim 4, characterized in that: The lower end of the second spring (31) is fixedly connected to a push plate (32), and the outer wall of the push plate (32) is set on the inner wall of the push rod (3).

6. The anti-pinch child safety seat buckle injection mold buffer structure according to claim 5, characterized in that: The inner wall of the push plate (32) is fixedly connected to a connecting shaft (33), and the outer wall of the connecting shaft (33) is slidably connected to the inner wall of the push rod (3).

7. The anti-pinch child safety seat buckle injection mold buffer structure according to claim 6, characterized in that: The outer wall of the push plate (32) is slidably connected to a rotating block (34), and the outer wall of the rotating block (34) is slidably connected to the inner wall of the lower mold (2).

8. The anti-pinch child safety seat buckle injection mold buffer structure according to claim 7, characterized in that: The inner wall of the rotating block (34) is rotatably connected to a fixed shaft (35), both ends of which are fixedly connected to the inner wall of the lower mold (2). The upper surface of the rotating block (34) is fixedly connected to a gripper (36), and the outer wall of the gripper (36) is slidably connected to the inner wall of the upper mold (23).

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