A new type of spring coiling tooling

Abstract

This utility model discloses a novel spring coiling fixture, relating to the technical field of spring coiling equipment. It includes: a bar stock as the processing material; a clamping device located below the bar stock for limiting its position and controlling its rotation trajectory; a rotating device driven by the spring coiling machine to rotate, causing the bar stock to move synchronously; grippers connected to the rotating device to fix the bar stock to the rotating device; an anti-detachment shaft axially inserted into the rotating device, with its end extending into the gripper limiting hole to limit the gripper's axial displacement along the rotating device; and a finishing device mounted on the spring coiling machine, corresponding to the output of the rotating device, for shaping and tightening the end of the nearly completed coiled bar stock to complete the finishing process. This device has significant advantages such as improved adaptability, overcoming production limitations, reducing production costs, and increasing production efficiency. It can be stably adapted to high-torque spring coiling machines and achieves precise coiling of high-temperature resistant special material springs with small winding ratios and small inner diameters.

Description

Technical Field

[0001] This utility model relates to the field of spring coiling equipment technology, specifically to a novel spring coiling tooling. Background Technology

[0002] As an indispensable elastic element in the mechanical field, the spring's coiling technology has evolved from manual operation to intelligent production. With the continuous advancement of industrial technology, the performance requirements for springs in various fields are increasing, especially in high-end sectors such as aerospace and automotive manufacturing. There is a growing demand for springs made of high-temperature resistant special materials, capable of withstanding extremely high coiling torque, and featuring small winding ratios and small inner diameters. For these high-requirement springs, not only must materials with excellent high-temperature resistance be selected, but high precision and stability must also be maintained during the coiling process. Furthermore, the tooling must possess efficient force transmission, flexible adaptation to different workpieces, and rapid assembly and disassembly capabilities to meet the production and usage requirements under complex working conditions.

[0003] However, traditional spring coiling processes and tooling face numerous insurmountable technical bottlenecks when dealing with the production of these high-requirement springs. Specifically: First, high-temperature resistant special materials are difficult to process and require stringent heat treatment. Traditional processes cannot precisely control material deformation and performance retention. Furthermore, tooling often employs a single rigid structure, resulting in concentrated force transmission paths and localized stress concentrations, leading to unstable torque output during coiling and difficulty in achieving the required spring elasticity. Second, the operating space for coiling springs with small winding ratios and small inner diameters is limited. Traditional tooling is mostly a fixed structure; for workpieces with the same diameter but different axial dimensions, the entire tooling needs to be replaced, resulting in poor adaptability and significantly increased remanufacturing costs. Third, traditional tooling assembly and disassembly rely on specialized auxiliary tools, leading to cumbersome operation steps, long downtime, and low automation in the production process. This not only results in low production efficiency but also increases rework costs due to insufficient processing accuracy, leading to high overall production costs and making it difficult to meet the demands of large-scale production. Therefore, developing a coiling fixture that can be adapted to high-torque coiling machines, achieve stable force transmission, flexibly adapt to various workpieces and allow for quick assembly and disassembly, while ensuring coiling accuracy and stability, is key to overcoming current technological limitations and has significant practical implications. Utility Model Content

[0004] The purpose of this invention is to provide a tooling for winding springs with small winding ratio and small inner diameter made of special high-temperature resistant materials and capable of withstanding ultra-large winding torque, so as to achieve stable and efficient winding of such springs.

[0005] To achieve the above objectives, this application proposes a novel spring coiling fixture, comprising:

[0006] Bar stock, used as processing material;

[0007] The clamping device, located below the bar stock, is used to limit the bar stock and control its rotation trajectory;

[0008] The rotating device is connected to the spring coiling machine connecting seat and is driven to rotate by the power output from the spring coiling machine, thereby driving the bar stock to move synchronously.

[0009] The gripper is connected to the rotating device, and its gripping end is in contact with the outer surface of the bar stock to fix the bar stock on the rotating device.

[0010] An anti-disengagement shaft is axially mounted on the rotating device, with its end extending into the limiting hole of the gripper to limit the displacement of the gripper along the axial direction of the rotating device.

[0011] The finishing device, corresponding to the output end of the rotating device, is installed on the spring coiling machine. It is used to shape and tighten the end of the coiled bar that is close to being finished, thus completing the finishing process of the spring.

[0012] In one embodiment, the clamping device includes:

[0013] The rolling roller has its outer circumferential surface in contact with the lower surface of the bar stock, and is used to support and limit the lower part of the bar stock to prevent it from shifting downwards during rolling.

[0014] The winding roller shaft has one end coaxially inserted into the hollow cavity of the winding roller and fixedly connected to the winding roller, and the other end is detachably connected to the spring winding machine, which is used to achieve the positioning and fixation of the winding roller on the spring winding machine.

[0015] In one embodiment, the rotating device includes: a support shaft, a mandrel body, an auxiliary mandrel, and a mandrel connecting seat, which are connected in sequence; wherein the mandrel body, the auxiliary mandrel, and the mandrel connecting seat are centered on the same horizontal line, and the support shaft is an eccentric structure used to control the angle deflection of the bar stock.

[0016] In one embodiment, the gripper includes: a gripper body, a gripper support, and a gripper handle; the gripper body is located on the rotating device; the gripper body is vertically connected to the gripper support, which is located below the bar stock for controlling the bar stock; the gripper handle is connected to the gripper body for easy disassembly of the gripper.

[0017] In one embodiment, the finishing device includes: a base, uprights, a finishing roller body, and a finishing roller shaft; the uprights have two bottoms fixed to the two sides of the base, and each has an annular through hole embedded in its top; the finishing roller body is a hollow cylinder and is placed between the two uprights; the finishing roller shaft is used to fix the finishing roller body to the uprights.

[0018] The advantages of the above technical solution adopted in this utility model compared with the prior art are:

[0019] 1. Improved adaptability and applicability: This utility model can be stably adapted to high-torque spring coiling machines, enabling precise coiling of high-temperature resistant special material springs with small winding ratios and small inner diameters. It effectively breaks through the technical bottleneck of traditional coiling tooling being unable to adapt to the production of such springs due to space limitations and insufficient strength, and fills the application gap of high-torque spring coiling machines in the field of small-specification high-temperature resistant spring processing.

[0020] 2. Overcoming Production Limitations: By optimizing the tooling structure design, the limitation of traditional spring coiling machines being able to produce only single-specification, conventional material springs has been eliminated. This allows the same spring coiling machine to flexibly switch between producing springs with small winding ratios, small inner diameters, and the same type of high-temperature resistant springs, thus expanding the production range and application scenarios of the equipment.

[0021] 3. Reduced production costs: There is no need to configure special coiling equipment or a complete set of tooling for springs of different specifications and materials. This utility model can achieve diversified production, greatly reducing the investment costs of repeated tooling manufacturing and equipment procurement; at the same time, it reduces the equipment footprint and maintenance costs, further reducing the overall production expenses of enterprises.

[0022] 4. Improved production efficiency: No need for frequent equipment replacement or large-scale tooling adjustments; production switching between different types of springs can be completed with simple adaptation, shortening equipment downtime for adjustment. Moreover, the tooling structure is stable, and problems such as workpiece misalignment and tooling damage are less likely to occur during the rolling process, reducing rework rate, significantly improving effective output per unit time, and improving overall production efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the rolling tooling structure;

[0024] Figure 2 This is a side view of the rolling tooling structure;

[0025] In the diagram: 1. Bar stock; 2. Rolling roller shaft; 3. Rolling roller; 4. Gripper support; 5. Gripper body; 6. Gripper handle; 7. Support shaft; 8. Anti-detachment shaft; 9. Mandrel body; 10. Auxiliary mandrel; 11. Mandrel connecting seat; 12. Finishing roller body; 13. Finishing roller shaft; 14. Vertical plate; 15. Base. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0027] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly specified. "Several" means one or more, unless otherwise expressly specified.

[0029] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] like Figure 1 As shown, a novel spring coiling fixture includes a bar stock 1, a coiling roller shaft 2, a coiling roller 3, a gripper support 4, a gripper body 5, a gripper handle 6, a support shaft 7, an anti-detachment shaft 8, a mandrel body 9, an auxiliary mandrel 10, a mandrel connecting seat 11, a finishing roller body 12, a finishing roller shaft 13, a vertical plate 14, and a base 15.

[0032] like Figure 1 , 2 As shown, bar stock is used as processing material.

[0033] The clamping device includes a coiling roller shaft 2 and a coiling roller 3; the coiling roller 3 is a hollow cylinder, and its outer circumference is in contact with the lower surface of the bar stock to support and limit the lower part of the bar stock and prevent it from shifting downward during coiling; one end of the coiling roller shaft 2 is coaxially inserted into the hollow cavity of the coiling roller 3 and fixedly connected to the coiling roller 3, and the other end is detachably connected to the spring coiling machine connecting seat to realize the positioning and fixing of the coiling roller on the spring coiling machine.

[0034] The rotating device includes: a support shaft 7, a mandrel body 9, an auxiliary mandrel 10, and a mandrel connecting seat 11, which are connected sequentially by welding; wherein, the mandrel body 9, the auxiliary mandrel 10, and the mandrel connecting seat 11 are centered on the same horizontal line, and the support shaft 7 is an eccentric structure used to control the angle deflection of the bar stock.

[0035] The gripper includes a gripper support 4, a gripper body 5, and a gripper handle 6 connected by welding. The gripper body 5 is located on the rotating device. The gripper body 5 is vertically connected to the gripper support 4, which is located below the bar stock 1 and is used to control the bar stock 1. The gripper handle 6 is connected to the gripper body 5 by welding for easy disassembly of the gripper.

[0036] Anti-detachment shaft 8, located on the rotating device, is used to fix the gripper.

[0037] The finishing device includes: a finishing roller body 12, a finishing roller shaft 13, a vertical plate 14, and a base 15. The bottoms of the two vertical plates are fixed to the base 15 by welding. The top of each vertical plate 14 is provided with a circular through hole. The finishing roller body 12 is a hollow cylinder and is placed between the two vertical plates. The finishing roller shaft 13 is used to fix the finishing roller body 12 to the vertical plate 14.

[0038] When using the above-mentioned new type of spring coiling tooling:

[0039] S1. Place the heated bar stock 1 on the rolling roller 3 and the gripper support 4, with the front end of the bar stock 1 flush with the mandrel body 9.

[0040] S2. Connect the gripper tightly to the spindle body 9 via the support shaft 7 and the anti-detachment shaft 8. Tighten the gripper support 4 to the bottom of the bar stock 1. Start the spring coiling machine to drive the entire rotating device to rotate.

[0041] S3. Under the transmission of the coiling roller 3, the bar stock 1 is in contact with the rotating device. Through the eccentric structure of the support shaft 7, the angle of the bar stock 1 is adjusted to realize the processing of the coiled spring.

[0042] S4. After the coiled bar material leaves the coiling roller 3, it is initially finished by the finishing device, and then finished tightly by the finishing roller of the spring coiling machine.

[0043] S5. After rolling is completed, remove the gripper using the gripper handle 6.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A novel spring coiling tooling, characterized in that, include: Bar stock, used as processing material; The clamping device, located below the bar stock, is used to limit the bar stock and control its rotation trajectory; The rotating device is connected to the spring coiling machine connecting seat and is driven to rotate by the power output from the spring coiling machine, thereby driving the bar stock to move synchronously. The gripper is connected to the rotating device, and its gripping end is in contact with the outer surface of the bar stock to fix the bar stock on the rotating device. An anti-disengagement shaft is axially mounted on the rotating device, with its end extending into the limiting hole of the gripper to limit the displacement of the gripper along the axial direction of the rotating device. The finishing device, corresponding to the output end of the rotating device, is installed on the spring coiling machine. It is used to shape and tighten the end of the coiled bar that is close to being finished, thus completing the finishing process of the spring.

2. The novel spring coiling fixture according to claim 1, characterized in that, The clamping device includes: a winding roller and a winding roller shaft; the winding roller has its outer circumferential surface in contact with the lower surface of the bar stock, used to support and limit the lower part of the bar stock to prevent it from shifting downwards during winding; one end of the winding roller shaft is coaxially inserted into the hollow cavity of the winding roller and fixedly connected to the winding roller, and the other end is detachably connected to the spring coiling machine, used to realize the positioning and fixing of the winding roller on the spring coiling machine.

3. The novel spring coiling fixture according to claim 1, characterized in that, The rotating device includes: a support shaft, a mandrel body, an auxiliary mandrel, and a mandrel connecting seat, which are connected in sequence; wherein, the mandrel body, the auxiliary mandrel, and the mandrel connecting seat are centered on the same horizontal line, and the support shaft is an eccentric structure used to control the angle deflection of the bar stock.

4. The novel spring coiling fixture according to claim 1, characterized in that, The gripper includes: a gripper body, a gripper support, and a gripper handle; the gripper body is located on the rotating device; the gripper body is vertically connected to the gripper support, which is located below the bar stock and is used to control the bar stock; the gripper handle is connected to the gripper body for easy disassembly of the gripper.

5. The novel spring coiling fixture according to claim 1, characterized in that, The finishing device includes: a base, uprights, a finishing roller body, and a finishing roller shaft; the uprights have two bottoms fixed to the two sides of the base, and each has a circular through hole embedded in its top; the finishing roller body is a hollow cylinder and is placed between the two uprights; the finishing roller shaft is used to fix the finishing roller body to the uprights.

Images