A quick splicing device for aluminum tennis racket frame

Abstract

The utility model relates to tennis racket manufacturing equipment technical field, concretely is a kind of aluminium tennis racket face frame quick splicing device, including workbench, the symmetrical adjusting bottom block of lateral displacement is equipped at workbench top, adjusting bottom block top is equipped with arc guiding seat, multiple sets of clamping units are slidably connected on arc guiding seat, each group of this clamping unit includes slider, swing arm rotationally connected in slider top and arc pressure head detachably installed in swing arm inner side, swing arm is elastically connected with slider by arc plate spring, and swing arm can be turned to outside side about the axis perpendicular to workbench.This aluminium tennis racket face frame quick splicing device is by using modularization replaceable arc locating block structure, realizes quick changeover and accurate positioning, improves the device versatility, reduces mould cost and maintenance difficulty, effectively improves the assembly efficiency under the production of multiple varieties.

Description

Technical Field

[0001] This utility model relates to the field of tennis racket manufacturing equipment technology, specifically to a quick assembly device for aluminum tennis racket face frame. Background Technology

[0002] With the development of the sporting goods manufacturing industry, aluminum tennis rackets have gained a significant share in the low-to-mid-range market due to their advantages such as lightweight, high strength, and low cost. In the tennis racket production process, the racket face frame is typically composed of aluminum profiles such as an arc-shaped top beam, bottom beam, and side frames. These need to be positioned and fixed using splicing devices for subsequent welding or riveting. Therefore, the splicing accuracy and efficiency of the racket face frame directly affect the overall production quality and capacity.

[0003] Currently, in the assembly process of aluminum tennis racket face frames, the common splicing device generally adopts an integrated fixed positioning mold frame. This mold frame has an integral groove structure on the worktable that perfectly matches the shape of the racket face. The aluminum profiles, such as the top beam, bottom beam, and side frame, are inserted into the groove one by one and clamped together to achieve splicing and positioning. However, this integral mold frame structure has significant drawbacks: because different models of tennis rackets have different curvatures and dimensions, especially the curvature of the top and bottom beams often differs, each racket model must be equipped with a dedicated positioning mold frame. When changing production models, the entire bulky mold frame must be disassembled and replaced, which is not only time-consuming and labor-intensive, affecting production line continuity, but also significantly increases production costs due to the manufacturing and storage of a large number of dedicated mold frames. Utility Model Content

[0004] The purpose of this utility model is to provide a quick splicing device for aluminum tennis racket racket face frames, so as to solve the problems mentioned in the background art, which are that the current aluminum tennis racket racket face frame splicing devices use an integral positioning mold frame, resulting in poor versatility, the need to replace the entire mold when changing models, long production preparation time, and high manufacturing and maintenance costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick assembly device for an aluminum tennis racket face frame, comprising a worktable, wherein the top of the worktable is symmetrically provided with adjustable base blocks that can be moved laterally, and each of the adjustable base blocks is provided with an arc-shaped guide seat on its top, wherein multiple sets of clamping units are slidably connected to the arc-shaped guide seat, each clamping unit comprising a slider, a swing arm rotatably connected to the top of the slider, and an arc-shaped pressure head detachably installed at the end of the swing arm, wherein the swing arm is elastically connected to the slider through an arc-shaped leaf spring, and the swing arm can be rotated outward around an axis perpendicular to the worktable.

[0006] Preferably, the top surface of the arc-shaped guide seat is provided with a T-shaped guide rail extending along the length direction, and its side wall is provided with equally spaced positioning recesses. The bottom of the slider is provided with a sliding groove that matches the T-shaped guide rail on the top surface of the arc-shaped guide seat.

[0007] Preferably, the top of the slider is provided with a column, the swing arm is hinged to the column at the top of the slider by a pin, one end of the arc-shaped leaf spring is fixed to the base of the slider, and the other end is fixed to the root side wall of the swing arm.

[0008] Preferably, the arc-shaped leaf spring has an arc-shaped structure with its concave surface facing the direction of the swing arm's rotation, and the arc-shaped leaf spring is made of multiple layers of spring steel sheets stacked together, with both ends fastened by screws.

[0009] Preferably, the inner wall surface of the arc-shaped pressure head is bonded with a flexible anti-slip layer, and the front end of the arc-shaped pressure head is provided with an inlet chamfer.

[0010] Preferably, the free end of the swing arm is provided with an internal threaded hole, and the arc-shaped pressure head is connected by screwing a stud into the internal threaded hole.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This rapid assembly device for aluminum tennis racket face frames achieves rapid model changeover and precise positioning by adopting a modular and replaceable arc-shaped positioning block structure, improving the device's versatility, reducing mold costs and maintenance difficulty, and effectively enhancing assembly efficiency under multi-variety production. The device flexibly matches different curvature contours through the circumferentially adjustable layout of the slider on the arc-shaped guide seat. The elastic clamping structure of the swing arm and arc-shaped leaf spring enables rapid racket frame insertion and reliable positioning. The detachable connection of the arc-shaped pressure head facilitates replacement to adapt to various racket types and their partial shapes. The overall structure combines high flexibility, strong versatility, and low maintenance costs, significantly optimizing the aluminum racket frame assembly process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a quick-assembly device for an aluminum tennis racket face frame according to the present invention.

[0013] Figure 2 This is a side view of the top of the workbench structure of a quick assembly device for an aluminum tennis racket racket face frame according to the present invention.

[0014] Figure 3 This is a schematic diagram of the top structure of the arc-shaped guide seat of a quick splicing device for the aluminum tennis racket face frame according to this utility model.

[0015] In the diagram: 1. Worktable; 2. Adjusting base block; 3. Arc-shaped guide seat; 4. Slider; 5. Swing arm; 6. Arc-shaped pressure head; 7. Arc-shaped leaf spring; 8. Positioning recess. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3This utility model provides a technical solution: a quick splicing device for aluminum tennis racket face frames, including a workbench 1. The top of the workbench 1 is symmetrically equipped with laterally movable adjustable base blocks 2. The workbench 1 and the adjustable base blocks 2 are slidably connected via guide rails. Each adjustable base block 2 has an arc-shaped guide seat 3 on its top. Multiple clamping units are slidably connected to the arc-shaped guide seat 3. Each clamping unit includes a slider 4, a swing arm 5 rotatably connected to the top of the slider 4, and an arc-shaped pressure head 6 detachably installed inside the swing arm 5. The arc-shaped pressure head 6 is fixedly connected to the inside of the swing arm 5 via a connector. The swing arm 5 is elastically connected to the slider 4 via an arc-shaped leaf spring 7, and the swing arm 5 can rotate outwards around an axis perpendicular to the workbench 1. With this structure, the operator can attach the upper beam to be spliced... One end of the aluminum frame profile, such as the lower beam, is aligned with the arc-shaped pressure heads 6 on both sides, pushing the profile inward. Its end first contacts the chamfered inlet of the arc-shaped pressure head 6, and then, under the thrust, forces the swing arm 5 to overcome the elasticity of the arc-shaped leaf spring 7 and rotate outward. When the profile continues to advance to the designed position, the swing arm 5 automatically rotates inward under the restoring force of the arc-shaped leaf spring 7, driving the arc-shaped pressure head 6 to press against the outer wall of the frame, achieving rapid clamping and positioning. Simultaneously, the slider 4 slides along the T-shaped guide rail on the arc-shaped guide seat 3, adjusting the circumferential position of the clamping unit according to different racket face curves. Position locking is achieved through the cooperation of the elastic positioning bead and the positioning recess 8. The adjusting base block 2 can move laterally on the worktable 1 to adapt to racket face contours of different widths. Multiple clamping... The unit works in concert to precisely constrain each section of the racket frame to a preset spatial position, forming a complete racket face shape. Overall, this structure achieves overall width adjustment through the adjustable arrangement of the slider 4 on the arc-shaped guide seat 3, the elastic clamping and rapid release of the swing arm 5 under the action of the arc-shaped leaf spring 7, the detachable design of the arc-shaped pressure head 6 for easy replacement of racket frame sections adapted to different curvatures, and the lateral displacement capability of the adjustable base block 2. This forms a highly modular and reconfigurable positioning system, completely eliminating the dependence on an integral fixed mold frame. It solves the problems of long changeover time, poor versatility, and high mold manufacturing and storage costs caused by the need to replace the entire mold when changing racket types in existing technologies. It significantly improves assembly efficiency and process flexibility under multi-variety, small-batch production conditions. The top surface of the arc-shaped guide seat 3 is provided with a T-shaped guide rail extending along its length, and its side wall is provided with equally spaced positioning recesses 8. The bottom of the slider 4 is provided with a sliding groove that matches the T-shaped guide rail on the top surface of the arc-shaped guide seat 3. This structure allows the slider 4 to slide smoothly and be precisely positioned along the arc-shaped guide seat 3. Guiding is achieved through the cooperation of the sliding groove and the T-shaped guide rail. Position locking is achieved by using an elastic positioning pin to engage with the positioning recesses 8. This facilitates the adjustment of the circumferential layout of the clamping unit according to the curvature of the frame, improving positioning flexibility and repeatability. The top of the slider 4 is provided with a column, and the swing arm 5 is hinged to the column at the top of the slider 4 by a pin. One end of the arc-shaped leaf spring 7 is fixed to the base of the slider 4, and the other end is fixed to the root side wall of the swing arm 5. This structure enables reliable rotation and elastic return of the swing arm 5.A stable flipping fulcrum is provided by a pin hinge. The arc-shaped leaf spring 7 provides a restoring force after the swing arm 5 flips under external force, ensuring that the arc-shaped pressure head 6 can automatically clamp after the racket frame is installed, guaranteeing clamping stability and ease of operation. The arc-shaped leaf spring 7 has an arc-shaped structure with its concave surface facing the flipping direction of the swing arm 5. The arc-shaped leaf spring 7 is made of multiple layers of spring steel sheets, which are fastened at both ends with screws. This structure allows the arc-shaped leaf spring 7 to effectively store elastic potential energy when the swing arm 5 flips. The multi-layer steel sheet stacking design improves elastic stability and fatigue life. The concave surface facing the direction of force enhances deformation compliance, ensuring that the swing arm 5 returns to its original position quickly and reliably, and is not prone to failure after long-term use. The inner wall of the arc-shaped pressure head 6... The surface is bonded with a flexible anti-slip layer, and the front end of the arc-shaped pressure head 6 has a guide chamfer. This structure guides the end of the racket frame to slide smoothly into the machine through the guide chamfer, avoiding jamming during installation. The flexible anti-slip layer increases the friction of the clamping surface, preventing the racket frame from sliding or misaligning during assembly, effectively improving positioning accuracy and operational efficiency. The free end of the swing arm 5 has an internal threaded hole, and the arc-shaped pressure head 6 is connected by screwing a stud into the internal threaded hole. This structure facilitates quick replacement and secure fixing of the arc-shaped pressure head 6. Axial pre-tightening is achieved through the stud connection to ensure no loosening during clamping. Furthermore, the corresponding arc-shaped pressure head 6 can be replaced according to different racket frame curvatures, improving the versatility and flexibility of the device.

[0018] Working principle: When using this aluminum tennis racket face frame quick splicing device, firstly, adjust the lateral position of the two adjusting base blocks 2 on the worktable 1 according to the width of the racket face to be spliced, so that it drives the arc-shaped guide seat 3 to move synchronously to the appropriate distance and fix it. Then, according to the curvature of the racket frame, slide multiple sets of sliders 4 along the T-shaped guide rail on the top surface of the arc-shaped guide seat 3 to the corresponding circumferential position, and lock them in place by inserting the elastic positioning beads into the positioning recesses 8 on the side wall. Next, manually flip the swing arm 5 outward to allow the arc-shaped pressure head 6 to make room for installation. Then, the upper beam, lower beam and other profile ends of the aluminum racket frame are installed. The profile is aligned with the chamfered front end of the curved pressure head 6 and slid in along its inner wall. The profile pushes the curved pressure head 6, forcing the swing arm 5 to continue to turn outward, compressing the curved leaf spring 7 to produce elastic deformation. After the profile is fully in the predetermined assembly position, the swing arm 5 is released, and the curved leaf spring 7 releases its elastic force to drive the swing arm 5 to rotate, so that the curved pressure head 6 fits against the outer wall of the racket frame to complete the clamping. At the same time, it is checked whether the curved pressure heads 6 of each clamping unit are all in place, confirming that all racket frame segments are constrained on the racket face contour formed by the inner walls of multiple sets of curved pressure heads 6, until the rapid splicing and positioning of the racket face frame is completed, thus completing a series of tasks.

[0019] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A rapid assembly device for aluminum tennis racket face frames, comprising a workbench (1), characterized in that: The workbench (1) is symmetrically provided with adjustable base blocks (2) that can be moved laterally. Each of the adjustable base blocks (2) is provided with an arc-shaped guide seat (3). Multiple clamping units are slidably connected to the arc-shaped guide seat (3). Each clamping unit includes a slider (4), a swing arm (5) rotatably connected to the top of the slider (4), and an arc-shaped pressure head (6) detachably installed on the inner side of the swing arm (5). The swing arm (5) is elastically connected to the slider (4) through an arc-shaped leaf spring (7), and the swing arm (5) can be rotated outward around the axis perpendicular to the workbench (1).

2. The rapid assembly device for the aluminum tennis racket face frame according to claim 1, characterized in that: The top surface of the arc-shaped guide seat (3) is provided with a T-shaped guide rail extending along the length direction, and its side wall is provided with equally spaced positioning recesses (8). The bottom of the slider (4) is provided with a sliding groove that matches the T-shaped guide rail on the top surface of the arc-shaped guide seat (3).

3. The rapid assembly device for the aluminum tennis racket face frame according to claim 1, characterized in that: The top of the slider (4) is provided with a column, and the swing arm (5) is hinged to the column at the top of the slider (4) by a pin. One end of the arc-shaped leaf spring (7) is fixed to the base of the slider (4), and the other end is fixed to the root side wall of the swing arm (5).

4. The rapid assembly device for the aluminum tennis racket face frame according to claim 1, characterized in that: The arc-shaped leaf spring (7) has an arc-shaped structure with its concave surface facing the flipping direction of the swing arm (5). The arc-shaped leaf spring (7) is made of multiple layers of spring steel sheets and is fastened at both ends by screws.

5. The rapid assembly device for the aluminum tennis racket face frame according to claim 1, characterized in that: The inner wall of the arc-shaped pressure head (6) is bonded with a flexible anti-slip layer, and the front end of the arc-shaped pressure head (6) is provided with an inlet chamfer.

6. The rapid assembly device for the aluminum tennis racket face frame according to claim 1, characterized in that: The free end of the swing arm (5) is provided with an internal threaded hole, and the arc-shaped pressure head (6) is connected by screwing a stud into the internal threaded hole.

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