Driven gear structure and injection mold thereof
By designing a driven gear structure with multiple teeth and a connecting block, and its injection mold, the problems of limited compatibility and high cost in the existing technology have been solved, achieving compatibility with various types of bearings and reducing costs.
Patent Information
- Application Number
- CN202422715442.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-07
AI Technical Summary
Existing driven gear structures have a limited range of applications, high costs, and poor flexibility in use.
Design a driven gear structure with multiple teeth and connecting blocks on the inner ring edge, and equip it with an injection mold, including a front mold base, a rear mold base, a front module and a rear module. Control the mold closing and demolding by a control cylinder, and set up cooling and exhaust pipes to ensure molding quality.
It achieves compatibility with various bearing models, reducing costs and increasing usage flexibility.
Smart Images
Figure CN223511447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic parts technology, specifically to a driven gear structure and its injection mold. Background Technology
[0002] Roller shutters are a common door structure. They consist of multiple articulated door panels linked together, moving up and down within fixed tracks, rotating around a central axis at the top. Roller shutters are widely used in shops.
[0003] Roller shutters are typically driven by a motor, which often requires driven gears as linkage components. Ordinary driven gears are mostly simple in structure and can only be used with one type of bearing, resulting in a small range of compatibility and poor flexibility in use. Furthermore, they are mostly made of alloy materials, which leads to higher costs and greater operating costs. Utility Model Content
[0004] The purpose of this utility model is to provide a driven gear structure and its injection mold, which solves the problems of small bearing compatibility range and high cost.
[0005] This utility model solves the above-mentioned technical problems through the following technical solution: This utility model includes an inner ring and a plurality of teeth evenly arranged on the edge of the inner ring. Gear grooves are formed between the teeth. A connecting block is provided at both ends of the inner ring. A connecting positioning groove is formed on both sides of the inner ring. A secondary connecting block is extended from the end of the connecting block. A secondary connecting positioning groove is evenly formed on the edge of the connecting block. The diameter of the secondary connecting block is smaller than the diameter of the connecting block.
[0006] Preferably, a third-level coupling block extends from the end of the secondary coupling block, the diameter of the third-level coupling block being smaller than the diameter of the secondary coupling block, and the edge of the secondary coupling block being uniformly provided with a third-level coupling positioning groove.
[0007] A driven gear injection mold includes a front mold base, a rear mold base, a front module, and a rear module. The front module is disposed within the front mold base, and the rear module is disposed within the rear mold base. The front module is located on one side of the rear module. The front module and the rear module have molding chambers with the same shape as the driven gear. The front mold base has a molding opening that communicates with the molding chambers in the front module. Multiple control cylinders are installed on the edge of the rear mold base, with one end of each control cylinder mounted on the front mold base.
[0008] Preferably, a locking block is rotatably mounted on the outer side of the front mold base, and a locking rod is mounted on the rear mold base. The locking block has a positioning groove, which corresponds to the locking rod.
[0009] Preferably, the rear mold base is provided with a push-plate type demolding structure.
[0010] Preferably, the rear module is equipped with an exhaust pipe that communicates with the molding chamber, and the rear mold base is provided with a pipe groove, with the exhaust pipe disposed in the pipe groove.
[0011] Preferably, the front mold base and the rear mold base are provided with multiple mounting slots, and cooling pipes are installed in the mounting slots.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] The driven gear provided by this utility model can be used with various types of bearings, thus having a wide range of applications and flexible use. Furthermore, the use of plastic materials can save costs. Attached Figure Description
[0014] Figure 1 This is a top view of the driven gear of this utility model;
[0015] Figure 2 This is a front view of the driven gear of this utility model;
[0016] Figure 3 This is a structural view of the injection mold of this utility model;
[0017] Figure 4 This is a view of the internal structure of the injection mold of this utility model.
[0018] The numbers in the diagram represent:
[0019] 1. Inner ring; 2. Tooth; 3. Gear groove; 4. Coupling block; 5. Coupling positioning groove; 6. Secondary coupling block; 7. Secondary coupling positioning groove; 8. Tertiary coupling block; 9. Tertiary coupling positioning groove; 10. Front mold base; 11. Rear mold base; 12. Front module; 13. Rear module; 14. Molding port; 15. Control cylinder; 16. Locking block; 17. Locking rod; 18. Positioning groove; 19. Push plate type demolding structure; 20. Exhaust pipe; 21. Cooling pipe. Detailed Implementation
[0020] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.
[0021] Example 1
[0022] This embodiment provides a technical solution: a driven gear structure, such as... Figure 1 and Figure 2As shown, it includes an inner ring 1 and a plurality of teeth 2 evenly distributed on the edge of the inner ring 1. Gear grooves 3 are formed between the teeth 2. Both ends of the inner ring 1 are provided with a connecting block 4, which can be easily connected to the bearing to facilitate the rotation of the driven gear. Both sides of the inner ring 1 are provided with connecting positioning grooves 5, which can be easily fixedly connected to the bearing. A secondary connecting block 6 is extended from the end of the connecting block 4. The edge of the connecting block 4 is evenly provided with secondary connecting positioning grooves 7. The diameter of the secondary connecting block 6 is smaller than the diameter of the connecting block 4. The secondary connecting block 6 can be easily used with small-diameter bearings, thus increasing the compatibility range. The secondary connecting positioning grooves 7 can also be easily fixedly connected to the bearing.
[0023] Furthermore, a tertiary coupling block 8 is extended from the end of the secondary coupling block 6. The diameter of the tertiary coupling block 8 is smaller than that of the secondary coupling block 6. Tertiary coupling positioning grooves 9 are evenly provided on the edge of the secondary coupling block 6. The tertiary coupling block 8 can be conveniently used with bearings of smaller diameter, thus further increasing the compatibility range. The tertiary coupling positioning grooves 9 can also facilitate fixed connection with bearings.
[0024] Example 2
[0025] This embodiment provides a technical solution: a driven gear injection mold, such as... Figure 3 and Figure 4 As shown, the system includes a front mold base 10, a rear mold base 11, a front module 12, and a rear module 13. The front module 12 is disposed within the front mold base 10, and the rear module 13 is disposed within the rear mold base 11. The front module 12 is located on one side of the rear module 13. Molding chambers with the same shape as the driven gear are opened in the front module 12 and the rear module 13. A molding port 14 is provided on the front mold base 10, which communicates with the molding chamber in the front module 12. Plastic can be injected into the molding chamber through the molding port 14 to form the driven gear shape. Multiple control cylinders 15 are installed on the edge of the rear mold base 11. One end of the control cylinder 15 is installed on the front mold base 10. The position of the front mold base 10 can be easily controlled by the control cylinders 15, thereby facilitating the mold closing and demolding of the front module 12 and the rear module 13.
[0026] Furthermore, a locking block 16 is rotatably mounted on the outer side of the front mold base 10, and a locking rod 17 is mounted on the rear mold base 11. The locking block 16 has a positioning groove 18, which corresponds to the locking rod 17. The locking block 16 and the locking rod 17 work together to ensure good stability when the mold is closed.
[0027] Furthermore, a push-plate type demolding structure 19 is provided inside the rear mold base 11, which allows the driven gear to be easily removed.
[0028] Furthermore, the rear module 13 is equipped with an exhaust pipe 20 that communicates with the molding chamber. The rear mold base 11 has a pipe groove, and the exhaust pipe 20 is located in the pipe groove. The exhaust pipe 20 can discharge the gas in the molding chamber during injection molding, thereby ensuring accurate molding.
[0029] Furthermore, the front mold base 10 and the rear mold base 11 are provided with multiple mounting slots, and cooling pipes 21 are installed in the mounting slots. The driven gear in the molding chamber can be cooled conveniently through the cooling pipes 21.
[0030] The above are merely preferred embodiments of this utility model and are illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of this utility model, all of which will fall within the protection scope of this utility model.
Claims
1. A driven gear structure, comprising an inner ring (1) and a plurality of teeth (2) evenly disposed on the edge of the inner ring (1), wherein gear grooves (3) are formed between the teeth (2), characterized in that, Both ends of the inner ring (1) are provided with connecting blocks (4), both sides of the inner ring (1) are provided with connecting positioning grooves (5), the end of the connecting block (4) is provided with a secondary connecting block (6), the edge of the connecting block (4) is provided with secondary connecting positioning grooves (7), and the diameter of the secondary connecting block (6) is smaller than the diameter of the connecting block (4).
2. The driven gear structure as described in claim 1, characterized in that, The secondary coupling block (6) extends to the end of a tertiary coupling block (8), the diameter of which is smaller than that of the secondary coupling block (6), and the secondary coupling block (6) has tertiary coupling positioning grooves (9) evenly distributed on its edge.
3. A driven gear injection mold, characterized in that, The injection mold is used to prepare the driven gear structure as described in claim 1 or 2, including a front mold base (10), a rear mold base (11), a front module (12), and a rear module (13). The front module (12) is disposed in the front mold base (10), and the rear module (13) is disposed in the rear mold base (11). The front module (12) is located on one side of the rear module (13). The front module (12) and the rear module (13) have molding chambers with the same shape as the driven gear. The front mold base (10) is provided with a molding opening (14) that communicates with the molding chamber in the front module (12). Multiple control cylinders (15) are installed on the edge of the rear mold base (11), and one end of the control cylinder (15) is installed on the front mold base (10).
4. The driven gear injection mold as described in claim 3, characterized in that, A locking block (16) is rotatably mounted on the outside of the front mold base (10), and a locking rod (17) is mounted on the rear mold base (11). The locking block (16) has a positioning groove (18) that corresponds to the locking rod (17).
5. The driven gear injection mold as described in claim 3, characterized in that, The rear mold base (11) is provided with a push plate type demolding structure (19).
6. The driven gear injection mold as described in claim 3, characterized in that, The rear module (13) is equipped with an exhaust pipe (20) that communicates with the molding chamber. The rear mold base (11) has a pipe groove, and the exhaust pipe (20) is located in the pipe groove.
7. The driven gear injection mold as described in claim 3, characterized in that, Multiple mounting slots are provided in the front mold base (10) and the rear mold base (11), and cooling pipes (21) are installed in the mounting slots.