A return spring coiling tool

Abstract

This utility model discloses a return spring coiling fixture to solve the problems of multiple processes and low efficiency in return spring coiling. The fixture consists of a mandrel, a bushing, and a sheet structure. The mandrel has a smooth surface and one end is a connecting end to a drive device. The bushing is fitted over the mandrel, with an inner diameter slightly larger than the outer diameter, and an auxiliary structure on its outer surface to guide the material coiling direction. The sheet structure is mounted on the bushing to assist in coiling and shaping. During coiling, one end of the spring material is fixed, and the drive device is activated to rotate the mandrel. The material advances in the gap between the mandrel and the bushing and is coiled under the action of the sheet structure. This fixture, through reasonable design and the coordinated operation of its components, enables rapid coiling of return springs, significantly shortening coiling time, improving production efficiency, and meeting the needs of large-scale production. It also reduces human error, ensuring consistent product quality. Furthermore, its simple structure and convenient operation reduce the technical requirements for operators and alleviate labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of spring manufacturing technology, specifically to a tooling for coiling return tension springs. Background Technology

[0002] Return springs, as a common elastic element, are widely used in many fields such as machinery, electronics, and automobiles. However, the structure of return springs is relatively complex, and their winding process involves multiple steps, such as material feeding, bending, and forming, making the operation cumbersome and complicated. Currently, traditional return spring winding methods mainly rely on manual operation or some simple auxiliary tools, resulting in low winding efficiency and difficulty in meeting the needs of large-scale production. At the same time, due to the error of manual operation, it is difficult to guarantee consistent product quality. Therefore, designing a special tooling that can achieve rapid winding of return springs is of significant practical importance. Utility Model Content

[0003] The purpose of this utility model is to provide a return spring coiling fixture to solve the problems of complicated and numerous processes and low coiling efficiency in the existing return spring coiling process, so as to realize the rapid coiling of return springs and improve production efficiency and product quality.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A return spring coiling fixture includes a mandrel, a bushing, and a sheet structure;

[0006] The mandrel is used to provide the rotation center for the coiled return spring, and one end of it is a connection end connected to the drive device.

[0007] The bushing is fitted outside the mandrel and mates with the mandrel. Its inner diameter is slightly larger than the outer diameter of the mandrel, and a gap is formed between the two to allow the spring material to pass through.

[0008] The sheet structure is mounted on the bushing and constrains and guides the spring material during the rolling process to achieve the rolling and forming of the return spring.

[0009] Preferably, the mandrel surface is smooth to reduce the frictional resistance of the spring material during the rolling process.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] Improved winding efficiency: The return spring winding fixture of this utility model, through reasonable design and synergistic effect between various components, realizes rapid winding of return springs, greatly shortens winding time, improves production efficiency, and can meet the needs of large-scale production.

[0012] Ensuring product quality: The precise fit of the mandrel, bushing, and plate structure in the tooling, as well as the constraint and guidance effect of the plate structure on the spring material, effectively reduces human error in the rolling process, ensures the consistency of the shape, size, and performance of the return spring, and improves product quality.

[0013] Easy to operate: The tooling has a simple structure and is easy to operate, which reduces the technical requirements for operators, reduces training costs, and also reduces the labor intensity of operators. Attached Figure Description

[0014] Figure 1 This is a schematic diagram (I) of a return spring coiling fixture according to the present invention;

[0015] Figure 2 This is a schematic diagram (II) of the structure of a return spring coiling tool according to the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0020] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Example:

[0022] like Figure 1 , 2 As shown, the return spring coiling fixture provided by this utility model mainly consists of a mandrel 1, a bushing 2, and a plate structure 3.

[0023] Mandrel 1: This is one of the core components of the tooling. Its shape and size are designed according to the specifications and requirements of the return spring. The surface of the mandrel is smooth to ensure that the spring material can move smoothly during the rolling process and reduce frictional resistance. One end of the mandrel is the connection end connected to the drive device (such as a motor) to provide rotational power during the rolling process.

[0024] Bushing 2: It is sleeved on the outside of the mandrel 1 and is used in conjunction with the mandrel 1. The inner diameter of the bushing is slightly larger than the outer diameter of the mandrel, and a certain gap is maintained between the two to allow the spring material to pass through smoothly during winding. The length of the bushing is designed according to the winding length of the return spring to ensure that the spring of the required length can be completely wound.

[0025] Plate structure 3: Installed on bushing 2, it plays a role in assisting in rolling and shaping. The plate structure can be designed according to the shape of the return spring and the rolling requirements. Its quantity and position can be adjusted according to the actual situation. The edges of the plate structure are specially treated to be smooth and burr-free, so as to avoid scratching the spring material during the rolling process. During the rolling process, the plate structure 3 works together with the mandrel 1 and bushing 2 to constrain and guide the spring material, so that it is rolled into shape according to the predetermined trajectory.

[0026] The spring material is formed by the cooperation of the mandrel and bushing, with the assistance of the sheet structure. The specific rolling process is as follows: one end of the spring material is fixed at a specific position on the mandrel or bushing, the drive device is started to make the mandrel rotate, and the spring material moves forward continuously in the gap between the mandrel and bushing, and is gradually rolled into the required return spring shape under the action of the sheet structure.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A tooling for coiling a return tension spring, characterized in that: Includes mandrel, bushing, and plate structure; The mandrel is used to provide the rotation center for the coiled return spring, and one end of it is a connection end connected to the drive device. The bushing is fitted outside the mandrel and mates with the mandrel. Its inner diameter is slightly larger than the outer diameter of the mandrel, and a gap is formed between the two to allow the spring material to pass through. The sheet structure is mounted on the bushing and constrains and guides the spring material during the rolling process to achieve the rolling and forming of the return spring.

2. The return tension spring coiling tool of claim 1, wherein: The mandrel has a smooth surface to reduce frictional resistance of the spring material during the rolling process.

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