Reversing mechanism of coil spring

Abstract

The utility model relates to the technical field of automobile safety buckle production, and discloses a coil spring reversing mechanism which comprises a workbench, a machining table is fixedly connected to the middle end of the upper surface of the workbench, a mounting column is fixedly connected to the outer side of the upper surface of the machining table, and a winding wheel is vertically connected to the circle center of the upper surface of the machining table in a sliding mode. According to the reverse rotation mechanism of the coil spring, by designing the rotatable pressing wheel, during reverse rotation of the coil spring, the pressing wheel can be flexibly adjusted to the position close to the upper portion of the coil spring, accurate positioning is implemented, the risk that the coil spring moves upwards in the operation process and is loosened is effectively reduced, it is guaranteed that reverse rotation winding is conducted smoothly, and the work efficiency is improved. According to the coil spring winding device, the positioning rod in sliding connection is arranged, the air cylinder provides power for driving the positioning rod, the positioning rod accurately aligns to and fixes the two middle circles of the coil spring in the key stage of reverse winding of the coil spring, the possibility that the end of the coil spring deforms in the winding process is remarkably reduced, and it is guaranteed that the shape of the coil spring is perfect.

Description

Technical Field

[0001] This application relates to the field of automotive safety buckle manufacturing technology, specifically a reversing mechanism for a coil spring. Background Technology

[0002] In the automotive manufacturing industry, safety buckles are one of the key components to ensure passenger safety. As the core component of safety buckles, the quality and performance of coil springs are directly related to the safety performance of safety buckles and even the entire vehicle. Preliminary bending and winding involves bending materials such as steel wire into a basic coil spring shape according to specific shapes and sizes. This step is usually completed by specialized winding equipment to ensure that the basic shape and size of the coil spring meet the design requirements.

[0003] To improve the resilience and stability of coil springs, existing technologies typically employ a reverse winding method, where the initially wound coil spring is wound in the opposite direction onto another shaft. By altering the stress distribution within the coil spring, it is designed to improve its resilience and stability. However, in practice, because the coil spring itself possesses a certain elasticity, when it is wound in the opposite direction onto the shaft, its internal elasticity attempts to restore the spring to its original shape. This causes the coil spring to be easily stretched or deformed during the winding process. Once stretched or deformed, its resilience and stability will be severely affected, potentially even failing to meet design requirements, thus leading to a decline in the performance of the car safety buckle. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a reversing mechanism for coil springs, which has advantages such as stable reversing and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a reversing mechanism for a coil spring, comprising a worktable, a processing table fixedly connected to the middle of the upper surface of the worktable, a mounting column fixedly connected to the outer side of the upper surface of the processing table, a winding wheel slidably connected vertically at the center of the upper surface of the processing table, a connecting block fixedly connected to the outer surface of the winding wheel, the connecting block being slidably connected to the processing table, and a push rod fixedly connected to the bottom of the connecting block, the push rod being slidably inserted into the worktable;

[0006] The upper surface of the workbench is rotatably connected to a take-up shaft, which is slidably inserted into the center of the take-up wheel, and a slot is provided at the top of the take-up shaft.

[0007] A cylinder is fixedly connected to the upper surface of the worktable, and a positioning rod is fixedly connected to the output end of the cylinder. The bottom of the positioning rod is in contact with the upper surface of the worktable.

[0008] The upper surface of the workbench is rotatably connected to a swing shaft, the top end of the swing shaft is fixedly connected to a swing plate, and the bottom of the other end of the swing plate is fixedly connected to a pressing wheel.

[0009] A bending block is slidably connected to the upper surface of the processing table, and a bending rod is fixedly connected to the bottom of the bending block. The bending rod is slidably inserted into the worktable and the processing table.

[0010] The above-described solution incorporates a rotatable pressing wheel, which can be flexibly adjusted to near the top of the coiled spring during reverse winding operations for precise positioning. This effectively reduces the risk of the coiled spring moving upwards and becoming loose during operation, ensuring smooth reverse winding. A sliding connection positioning rod, driven by a cylinder, is also included. During the critical stage of reverse winding, the positioning rod precisely aligns with and fixes the middle two coils of the spring, significantly reducing the possibility of deformation at the ends of the spring during winding and ensuring the perfect shape of the spring. A retractable bending block is specially provided on the processing table. When end bending of the spring is required, the bending block can be quickly extended into place with a simple operation, which is not only easy to operate but also greatly improves the efficiency and accuracy of bending operations.

[0011] Furthermore, a first motor is installed at the bottom of the workbench, and the output end of the first motor is fixedly connected to the take-up shaft.

[0012] The above scheme, through the setting of the first motor, can achieve the purpose of rotating the winding shaft, thereby achieving the effect of reversing the coil spring.

[0013] Furthermore, a second motor is fixedly installed at the bottom of the workbench, and the output end of the second motor is fixedly connected to the bottom end of the swing shaft.

[0014] The above scheme, through the setting of the second motor, enables the rotation of the swing shaft.

[0015] Furthermore, a first electric actuator is provided below the workbench, and a first connecting rod is fixedly connected to the output end of the first electric actuator. The other end of the first connecting rod is fixedly connected to the bottom end of the push rod.

[0016] The above scheme, through the setting of the first electric actuator, can provide power for the up and down movement of the winding wheel.

[0017] Furthermore, a second electric actuator is provided below the workbench, and a second connecting rod is fixedly connected to the output end of the second electric actuator. The other end of the second connecting rod is fixedly connected to the bottom end of the bending rod.

[0018] The above scheme, through the setting of the second electric actuator, can provide power for the up and down movement of the bending block.

[0019] Furthermore, a set of first brackets is fixedly connected to the outer surface of the first electric actuator, and the top ends of both first brackets are fixedly connected to the bottom of the worktable.

[0020] The above solution, through the setting of the first bracket, can achieve the purpose of fixing the first electric actuator.

[0021] Furthermore, a set of second brackets is fixedly connected to the outer surface of the second electric actuator, and the top ends of both second brackets are fixedly connected to the bottom of the worktable.

[0022] The above solution, through the setting of the second bracket, can achieve the purpose of fixing the second electric actuator.

[0023] Furthermore, the bottom of the workbench is fixedly connected to two support legs.

[0024] The above solution, through the setting of support legs, can achieve the purpose of supporting the workbench.

[0025] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0026] This reversing mechanism for a coiled spring features a rotatable pressing wheel. During reversing the coiled spring, the pressing wheel can be flexibly adjusted to near the top of the coiled spring for precise positioning. This effectively reduces the risk of the coiled spring moving upwards and becoming loose during operation, ensuring smooth reversing winding. A sliding positioning rod, driven by a cylinder, is also included. During the critical stage of reversing the coiled spring, the positioning rod precisely aligns with and fixes the middle two coils, significantly reducing the possibility of deformation at the spring end during winding, ensuring the perfect shape of the coiled spring and meeting the requirements for bending the spring end. A retractable bending block is specially provided on the processing table. When bending the spring end is required, the bending block can quickly extend into place with a simple operation, making operation not only convenient but also greatly improving the efficiency and accuracy of bending operations. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 1 ;

[0028] Figure 2 For this application Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0029] Figure 3 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 2 ;

[0030] Figure 4 This is a structural diagram of the winding wheel in this application.

[0031] In the picture:

[0032] 1. Workbench; 2. Processing table; 3. Mounting column; 4. Rewinding roller; 5. Connecting block; 6. Push rod; 7. Rewinding shaft; 8. Slot; 9. Cylinder; 10. Positioning rod; 11. Swing shaft; 12. Swing plate; 13. Pressing roller; 14. Bending block; 15. Bending rod; 16. First motor; 17. Second motor; 18. First electric actuator; 19. Second electric actuator; 20. First support; 21. Second support; 22. Support leg; 23. First connecting rod; 24. Second connecting rod. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a coil spring reversing mechanism includes a worktable 1. A processing table 2 is fixedly connected to the middle of the upper surface of the worktable 1. A mounting column 3 is fixedly connected to the outer side of the upper surface of the processing table 2. The mounting column 3 can hold the initially wound coil spring. A take-up wheel 4 is slidably connected to the center of the upper surface of the processing table 2. A connecting block 5 is fixedly connected to the outer surface of the take-up wheel 4. The connecting block 5 is slidably connected to the processing table 2. A push rod 6 is fixedly connected to the bottom of the connecting block 5. The push rod 6 is slidably inserted into the worktable 1. The take-up wheel 4 can move up and down. After winding, the take-up wheel 4 moves upward to achieve the effect of automatic material pushing. A first electric push rod 18 is provided below the worktable 1. A first connecting rod 23 is fixedly connected to the output end of the first electric push rod 18. The other end of the first connecting rod 23 is fixedly connected to the bottom end of the push rod 6. The first electric push rod 18 can provide power for the up and down movement of the take-up wheel 4.

[0035] Please see Figure 1 , Figure 2 and Figure 4A set of first brackets 20 are fixedly connected to the outer surface of the first electric actuator 18. The top ends of the two first brackets 20 are fixedly connected to the bottom of the worktable 1. The first brackets 20 can be used to fix the first electric actuator 18. A take-up shaft 7 is rotatably connected to the upper surface of the worktable 1. The take-up shaft 7 is slidably inserted into the center of the take-up wheel 4. A slot 8 is provided at the top end of the take-up shaft 7. The slot 8 can be used to lock one end of the coil spring. A first motor 16 is installed at the bottom of the worktable 1. The output end of the first motor 16 is fixedly connected to the take-up shaft 7. The first motor 16 can be used to rotate the take-up shaft 7, thereby achieving the reverse rotation effect of the coil spring.

[0036] Please see Figure 1 , Figure 2 and Figure 4 The bottom of the worktable 1 is fixedly connected to two support legs 22. The support legs 22 can support the worktable 1. The upper surface of the worktable 1 is fixedly connected to a cylinder 9. The output end of the cylinder 9 is fixedly connected to a positioning rod 10. The bottom of the positioning rod 10 contacts the upper surface of the processing table 2. The positioning rod 10 positions the middle two coils of the coil spring, reducing the possibility of deformation at the winding end.

[0037] Please see Figure 1 , Figure 2 and Figure 4 A swing shaft 11 is rotatably connected to the upper surface of the worktable 1. A swing plate 12 is fixedly connected to the top of the swing shaft 11. A pressing wheel 13 is fixedly connected to the bottom of the other end of the swing plate 12. Before the coil spring is wound in the reverse direction, the pressing wheel 13 is positioned above the coil spring to position the coil spring and prevent it from moving upward, so that the coil spring can be wound more smoothly. A second motor 17 is fixedly installed at the bottom of the worktable 1. The output end of the second motor 17 is fixedly connected to the bottom end of the swing shaft 11. The purpose of the swing shaft 11 can be achieved by setting the second motor 17.

[0038] Please see Figure 1 , Figure 2 and Figure 4A bending block 14 is slidably connected to the upper surface of the processing table 2. A bending rod 15 is fixedly connected to the bottom of the bending block 14. The bending rod 15 is slidably inserted into the worktable 1 and the processing table 2. The bending rod 15 enables the bending block 14 to move up and down. When it is necessary to bend the end of the coil spring, the bending block 14 can be extended, making bending more convenient. A second electric push rod 19 is provided below the worktable 1. A second connecting rod 24 is fixedly connected to the output end of the second electric push rod 19. The other end of the second connecting rod 24 is fixedly connected to the bottom end of the bending rod 15. The second electric push rod 19 provides power for the up and down movement of the bending block 14. A set of second brackets 21 is fixedly connected to the outer surface of the second electric push rod 19. The top ends of the two second brackets 21 are fixedly connected to the bottom of the worktable 1. The second brackets 21 can fix the second electric push rod 19.

[0039] In this embodiment, a reversing mechanism for a coil spring is designed with a rotatable pressing wheel 13. During the reversing coil spring operation, the pressing wheel 13 can be flexibly adjusted to be near the top of the coil spring for precise positioning. This effectively reduces the risk of the coil spring moving upwards during operation and becoming loose, ensuring smooth reversing winding. A slidingly connected positioning rod 10 is provided, which is driven by a cylinder 9. During the critical stage of reversing the coil spring, the positioning rod 10 accurately aligns with and fixes the middle two coils of the coil spring, significantly reducing the possibility of deformation at the end of the coil spring during winding and ensuring the perfect shape of the coil spring. A retractable bending block 14 is specially provided on the processing table 2. When it is necessary to bend the end of the coil spring, the bending block 14 can be quickly extended into place with a simple operation, which is not only easy to operate, but also greatly improves the efficiency and accuracy of bending operations.

[0040] The working principle of the above embodiment is as follows: The pre-wound coil spring is placed on the mounting post 3 on the processing table 2. One end of the pre-wound coil spring is engaged with the slot 8 of the take-up shaft 7, preparing for the reverse winding operation. At this time, the pressing wheel 13 is in the initial position and has not pressed or positioned the coil spring. The second motor 17 is started to drive the swing shaft 11 to adjust the angle so that the pressing wheel 13 is above the coil spring and positions and presses the coil spring. Then, the cylinder 9 is started. The output end of the cylinder 9 pushes the positioning rod 10 to move towards the coil spring until one end of the positioning rod 10 maintains a small gap with the coil spring. This step ensures that the middle part of the coil spring can remain stable during the reverse winding process, reducing the possibility of deformation at the take-up end. Subsequently, the first motor 16 is started. The output of the first motor 16 drives the take-up shaft 7 to start rotating, realizing the reverse winding of the coil spring. After the reverse winding is completed, the pressing wheel 13 and the limit rod are reset. At this time, the first electric push rod 18 is activated. The output of the first electric push rod 18 pushes the push rod 6 upward through the first connecting rod 23, thereby driving the take-up wheel 4 and the coil spring to move upward together. When the take-up wheel 4 rises to a certain height, the coil spring will automatically detach from the take-up wheel 4, realizing the effect of automatic material pushing. If it is necessary to bend the end of the coil spring, the second electric push rod 19 can be activated. The output of the second electric push rod 19 pushes the bending block 14 upward through the second connecting rod 24 until the bending block 14 contacts the coil spring. Appropriate pressure can be applied to the bending block 14 to bend the end of the coil spring.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reversing mechanism for a coiled spring, comprising a worktable (1), characterized in that: A processing table (2) is fixedly connected to the middle of the upper surface of the workbench (1). A mounting column (3) is fixedly connected to the outer side of the upper surface of the processing table (2). A winding wheel (4) is slidably connected to the center of the upper surface of the processing table (2). A connecting block (5) is fixedly connected to the outer surface of the winding wheel (4). The connecting block (5) is slidably connected to the processing table (2). A push rod (6) is fixedly connected to the bottom of the connecting block (5). The push rod (6) is slidably inserted into the workbench (1). The upper surface of the workbench (1) is rotatably connected to a take-up shaft (7), which is slidably inserted into the center of the take-up wheel (4). A slot (8) is provided at the top of the take-up shaft (7). A cylinder (9) is fixedly connected to the upper surface of the worktable (1), and a positioning rod (10) is fixedly connected to the output end of the cylinder (9). The bottom of the positioning rod (10) is in contact with the upper surface of the processing table (2). The upper surface of the workbench (1) is rotatably connected to a swing shaft (11), the top end of the swing shaft (11) is fixedly connected to a swing plate (12), and the bottom of the other end of the swing plate (12) is fixedly connected to a pressing wheel (13). A bending block (14) is slidably connected to the upper surface of the processing table (2), and a bending rod (15) is fixedly connected to the bottom of the bending block (14). The bending rod (15) is slidably inserted into the worktable (1) and the processing table (2).

2. The reversing mechanism of a coil spring according to claim 1, characterized in that: The bottom of the workbench (1) is equipped with a first motor (16), and the output end of the first motor (16) is fixedly connected to the take-up shaft (7).

3. The reversing mechanism of a coil spring according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly equipped with a second motor (17), and the output end of the second motor (17) is fixedly connected to the bottom end of the swing shaft (11).

4. The reversing mechanism of a coil spring according to claim 1, characterized in that: The workbench (1) is provided with a first electric push rod (18) below it. The output end of the first electric push rod (18) is fixedly connected to a first connecting rod (23). The other end of the first connecting rod (23) is fixedly connected to the bottom end of the push rod (6).

5. The reversing mechanism of a coil spring according to claim 1, characterized in that: The workbench (1) is provided with a second electric actuator (19) below it. The output end of the second electric actuator (19) is fixedly connected to a second connecting rod (24). The other end of the second connecting rod (24) is fixedly connected to the bottom end of the bending rod (15).

6. The reversing mechanism of a coil spring according to claim 4, characterized in that: A set of first brackets (20) are fixedly connected to the outer surface of the first electric actuator (18), and the tops of the two first brackets (20) are fixedly connected to the bottom of the worktable (1).

7. The reversing mechanism of a coil spring according to claim 5, characterized in that: The outer surface of the second electric actuator (19) is fixedly connected to a set of second brackets (21), and the tops of the two second brackets (21) are fixedly connected to the bottom of the worktable (1).

8. The reversing mechanism of a coil spring according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected to two support legs (22).

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