A pre-forming apparatus for a racket frame of a badminton racket

Abstract

The present application relates to badminton racket forming technical field, especially in a kind of badminton racket frame preforming equipment, the equipment includes rack, pushing mechanism, forming block, first guide rod and T-shaped frame. Wherein, rack is fixed on supporting plate, and rack is set transmission chain on the both sides of supporting plate, and multiple sets of pushing mechanism are arranged in equal interval mode between transmission chain. When working, transmission chain runs and drives pushing mechanism to move, so that pushing mechanism is pushed to forming block in operation, and in the process, pushing mechanism combines the elastic force of spring, so that pushing roller can adhere prefabricated long strip to the outer peripheral contour of forming block, and prefabricated long strip is automatically pressed to form prefabricated frame, which is highly compatible with the contour of badminton racket frame, while the both ends of prefabricated frame can be sleeved into the corresponding port of T-shaped frame, the design can automatically push, form and press prefabricated long strip without manual intervention, and the both ends of prefabricated frame can be positioned and connected with prefabricated middle pole, which effectively improves the automation degree of badminton racket frame preforming.

Description

Technical Field

[0001] This invention relates to the field of badminton racket molding technology, and in particular to a badminton racket frame pre-forming device. Background Technology

[0002] In the production and manufacturing process of badminton rackets, the pre-forming of the racket frame is one of the key processes. In the existing technology, carbon cloth is usually rolled up manually on the outside of a flat long rod to form a pre-made strip. The pre-made strip is then processed into a pre-made racket frame that matches the outline of the racket frame. Then, the two ends of the pre-made racket frame are connected to the pre-made shaft with carbon cloth. Finally, the connected pre-made racket frame and pre-made shaft are placed in a mold and formed by high temperature pressing.

[0003] The above processing methods rely on manual participation in multiple steps, such as pushing and pressing the prefabricated strips and positioning and connecting the prefabricated frame and the prefabricated central rod. As a result, the automation level of the entire processing process is low, which not only leads to low production efficiency, but also makes it difficult to ensure the shape accuracy and dimensional consistency of the prefabricated frame due to the uncertainty of manual operation. This makes it impossible to meet the requirements of large-scale production for product quality stability. Summary of the Invention

[0004] To address the shortcomings mentioned above in the background technology, the present invention provides a badminton racket frame preforming device.

[0005] The present invention adopts the following technical solution:

[0006] A badminton racket frame preforming device, the device comprising:

[0007] A frame, on which a support plate is fixed, and a transmission chain is provided on both sides of the support plate, and the two transmission chains run synchronously;

[0008] The material pushing mechanism includes a connector, a guide rod, a guide member, a spring, and a pusher roller. The connector is fixed at corresponding positions of the two transmission chains. The two guide rods are fixedly connected between the two connectors. The two guide rods are fitted with the two guide members, and the guide rods are fitted with springs. The two ends of the springs abut against the connector and the guide members respectively. The elastic force of the springs forms a pushing force that pushes the guide members toward the middle of the frame. The guide members are provided with two pusher rollers along the conveying direction above the transmission chains.

[0009] A molding block is fixed in the middle of the support plate, and the outer periphery of the molding block matches the outline of the racket frame.

[0010] A first guide rod is fixed between the starting end of the frame and the molding block, and two first guide rods are mirror-arranged on the frame. Both first guide rods are inclined from the side of the frame towards the middle of the frame. The end of the first guide rod near the molding block is close to the corner of the molding block, and the end of the first guide rod near the starting end of the frame is close to the side of the frame. When the guide member moves to the starting end of the frame, it is located on the side of the first guide rod facing outward from the frame.

[0011] A T-shaped frame is provided, with a T-shaped gap inside. The T-shaped frame is positioned at the starting end of the forming block facing away from the frame. The middle port of the T-shaped frame is used to place a prefabricated center rod.

[0012] The prefabricated strip is embedded between the two pusher rollers of the same guide member between the two guide rods. The transmission chain moves through the guide rods to drive the pusher rollers to move, thereby pushing the prefabricated strip to the forming block. The springs at both ends of the guide rods push the two guide members to move along the first guide rod towards the middle of the frame, so that the pusher rollers move against the side of the forming block, pressing the prefabricated strip against both sides of the forming block to form a prefabricated racket frame that matches the racket frame contour. The two ends of the prefabricated racket frame are respectively fitted into the corresponding ends of the T-shaped frame.

[0013] In one possible implementation, the forming block is provided with a clearance opening at the position opposite to the starting end of the frame, the T-shaped frame is embedded in the clearance opening and can be raised and lowered relative to the support plate. In the initial state, the T-shaped frame is located under the support plate. After the prefabricated strip is pressed to form the prefabricated frame, the T-shaped frame rises, so that the two ends of the prefabricated frame are respectively embedded in the corresponding two ends of the T-shaped frame.

[0014] In one possible implementation, the two guide rods of the pushing mechanism are fixed to the transmission member at the middle position. The width of the transmission member is greater than the width of the T-shaped frame. The spring pushes the two guide rods and the pusher rollers connected to them to firmly press the pre-made strip onto the two sides of the molding block. After forming a shape that matches the height of the frame outline, the pusher rollers of the two guide rods are blocked by the transmission member at the side of the clearance opening.

[0015] In one possible implementation, a top rod is fixed to the bottom of the T-shaped frame, and the bottom of the top rod facing away from the starting end of the frame has an inclined guide surface; multiple sets of the pushing mechanism are arranged at equal intervals in the transmission chain. When one set of the pushing mechanism presses the prefabricated strip to form the prefabricated frame, the guide rod located in front of the pushing mechanism moves to the top rod along the running direction of the transmission chain and moves in contact with the guide surface to lift the top rod and the T-shaped frame onto the support plate.

[0016] In one possible implementation, a hook groove is provided on one side of the top rod, and a pivot seat and a limiting hook are provided at the bottom of the support plate. The pivot seat is fixed to the bottom of the support plate, and one end of the limiting hook is rotatably connected to the pivot seat. A torsion spring is connected between the limiting hook and the pivot seat at the pivot shaft position. The torsion spring generates a torque that pushes the limiting hook toward the swinging top rod. After the top rod and the T-shaped frame are lifted onto the support plate, the end of the limiting hook is embedded in the hook groove.

[0017] In one possible implementation, a pressure bar is fixed to the side of the limiting hook facing the starting end of the frame. The pressure bar is L-shaped, with its horizontal section fixed to the limiting hook and its vertical section passing through the support plate and the forming block. A transmission component is fixed to the two guide rods of the pushing mechanism at the middle position. The end face of the transmission component is an arc-shaped surface or an inclined surface. When the pushing mechanism moves to the forming block, the arc-shaped surface of the transmission component presses down the pressure bar, causing the pressure bar to swing the limiting hook away from the top rod, and swing until the limiting hook leaves the hook groove, so that the T-shaped frame descends under the support plate.

[0018] In one possible implementation, guide pins are fixed on both sides of the relief opening on the bottom surface of the support plate, a limiting part is fixed at the bottom of the guide pins, a base plate is fixed at the bottom of the T-shaped frame, guide holes are provided on both sides of the base plate, the two guide holes are respectively adapted to fit outside the two guide pins, and the diameter of the two guide holes is smaller than the outer diameter of the limiting part.

[0019] In one possible implementation, the device further includes a fabric pressing mechanism, which includes a swing seat, a swing member, and a pressure plate. A gap is formed inside the forming block, and a through groove is provided on the side of the forming block facing away from the starting end of the frame. The swing seat is fixed inside the forming block, the swing member swings relative to the through groove, and the pressure plate is fixed to the swing member. After the T-shaped frame rises above the support plate, the swing seat swings outward from the through groove, causing the pressure plate to press into the T-shaped frame, so as to press the carbon cloth pre-inserted in the T-shaped frame towards both ends of the prefabricated frame and the end of the prefabricated middle rod.

[0020] In one possible implementation, the fabric pressing mechanism further includes a first link, a second link, and a drive shaft. The drive shaft is restricted to rotate relative to the support plate. One end of the first link is pivotally connected to the swing seat, and both ends of the second link are pivotally connected to the drive shaft and the first link, respectively. After the T-shaped frame rises above the support plate, the drive shaft rotates and drives the swing seat to swing outward from the through groove via the first link and the second link.

[0021] In one possible implementation, the pressing mechanism further includes a drive shaft, a gear, and a rack. The drive shaft is restricted to rotate within the frame. One end of the drive shaft is connected to the drive shaft, and the other end of the drive shaft is fixed to the gear. The two guide rods of the pushing mechanism are fixed to the transmission component at the middle position, and the rack is fixed to the transmission component. When one set of the pushing mechanism presses the prefabricated strip to form the prefabricated frame, the transmission component located in front of the pushing mechanism moves under the support plate along the running direction of the transmission chain, causing the rack and the gear to mesh, thereby driving the drive shaft to rotate, and causing the drive shaft to rotate accordingly.

[0022] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: In the operation of the present invention, the transmission chain drives the pushing mechanism to move, so that the pushing mechanism pushes the pre-made strip to the forming block. During the process, the first guide rod limits the guiding part of the pushing mechanism, so that the pushing roller corresponds to the corner of the side of the forming block when it approaches the forming block. Subsequently, combined with the elastic force of the spring, the pushing roller makes the pre-made strip fit the outer contour of the forming block. Finally, the pre-made strip is automatically pressed to form a pre-made racket frame that matches the height of the badminton racket frame contour. At the same time, the two ends of the pre-made racket frame can be fitted into the corresponding ports of the T-shaped frame. This design can complete the automatic pushing, forming and pressing of the pre-made strip and the positioning connection with the pre-made rod without manual intervention, effectively improving the automation level of badminton racket frame pre-forming processing, as well as the shape accuracy and dimensional consistency of the pre-made racket frame. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 for Figure 1 A magnified diagram of point A in the middle.

[0025] Figure 3 for Figure 1 A magnified diagram of point B in the middle.

[0026] Figure 4 This is a schematic diagram showing the molding block placed on the support plate, and the pressure plate about to flip out of the through groove.

[0027] Figure 5 This is a side cross-sectional view of the present invention.

[0028] Figure 6 for Figure 5 A magnified diagram of point C.

[0029] Figure 7 This is a schematic diagram of the feeding mechanism.

[0030] Figure 8 This is a cross-sectional schematic diagram showing the connection between the pusher roller and the guide.

[0031] Figure 9 This is a three-dimensional structural diagram of the first guide rod.

[0032] Figure 10 This is a three-dimensional structural diagram of the present invention from a downward viewing angle.

[0033] Figure 11 for Figure 10 A magnified diagram of point D in the middle.

[0034] Figure 12 This is a schematic diagram of the fixed top rod under the T-shaped frame.

[0035] Figure 13 This is a three-dimensional structural diagram of the bottom structure of the support plate.

[0036] Figure 14 for Figure 13 A magnified diagram at point E in the middle.

[0037] Figure 15 A cross-sectional schematic diagram showing the connection between the support plate and the pressing mechanism, top rod, and limit hook.

[0038] Figure 16 This is a three-dimensional structural diagram of the pressing mechanism and components such as the top rod and the limiting hook. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0040] In the following description, the terms "first," "second," etc., 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. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0042] This invention provides a badminton racket frame preforming device, as shown in the attached figure. Figure 1 and 5 As shown, the equipment includes a frame 1, a pushing mechanism 2, a forming block 3, a first guide rod 4, a T-shaped frame 5, and a pressing mechanism. A support plate 11 is fixed on the frame 1, and the forming block 3 is fixed in the middle of the support plate 11, with its outer periphery matching the outline of the pressing frame. Drive chains 12 are provided on both sides of the support plate 11 on the frame 1. Multiple pushing mechanisms 2 are arranged at equal intervals between the two drive chains 12, and the two ends of the pushing mechanisms 2 are fixed to the corresponding positions of the two drive chains 12, ensuring that when the two drive chains 12 operate synchronously, they can drive the pushing mechanisms 2 to run along a specific trajectory relative to the frame 1. During the process, the pushing mechanisms 2... Figure 2 The prefabricated strip 71 embedded therein is pushed forward. As the pushing mechanism 2 operates, the prefabricated strip 71 is gradually pushed to the forming block 3 and tightly pressed against the outer periphery of the forming block 3 under the action of the pushing mechanism 2. Using the contour constraint of the forming block 3, the prefabricated strip 71 is pre-pressed into a prefabricated frame 72 that matches the height of the frame contour. This achieves precise pre-forming processing of the badminton racket frame shape, effectively ensuring the dimensional accuracy and shape consistency of the prefabricated frame 72, and laying a good foundation for the subsequent production and manufacturing of badminton rackets.

[0043] Continue to refer to the appendix Figure 1 The first guide rod 4 is fixed at the starting end of the frame 1 (i.e., the attached...). Figure 1 Between the left end and the forming block 3, and two first guide rods 4 are mirrored on the frame 1, both of which are inclined from the side of the frame 1 toward the middle of the frame 1. The end of the first guide rod 4 near the forming block 3 is close to the corner 31 of the forming block 3, and the end of the first guide rod 4 near the starting end of the frame 1 is close to the side of the frame 1.

[0044] As attached Figure 2 , 7As shown in Figure 8, the pushing mechanism 2 includes a connecting member 21, a guide rod 22, a guide member 23, a spring 24, and a pushing roller 25. The connecting member 21 is fixed at each position corresponding to the transmission chain 12, and two guide rods 22 are fixedly connected between the two connecting members 21. Preferably, the connecting member 21 is an I-shaped stainless steel component. The upper two sides of the connecting member 21 are connected and fixed to the two guide rods 22 by screws. The lower end of the connecting member 21 is connected to the chain link of the transmission chain 12 by a pin. Rivets or screws can be inserted into the pin to limit the connection of the connecting member 21. Guide members 23 are simultaneously fitted on both sides of the two guide rods 22 opposite to the frame 1. Two pushing rollers 25 are arranged on the two guide rods 23 along the conveying direction of the conveyor belt 13. During equipment operation, the pushing rollers 25 push the pre-formed strips 71. A spring 24 is fitted around the guide rod 22. The two ends of the spring 24 abut against the connector 21 and the guide 23, respectively. The elastic force generated by the elastic deformation of the spring 24 forms a thrust that pushes the guide 23 toward the center of the frame 1. When the feeding mechanism 2 moves to the starting end of the frame 1, the guide 23 is located on the side of the first guide rod 4 facing outward from the frame 1, so that the first guide rod 4 restricts the guide 23.

[0045] Specifically, the first guide rod 4, with its inclined layout from the side of the frame 1 towards the center, forms a mechanical limiting constraint on the two guide members 23 of the pushing mechanism 2. This forces the two guide members 23 to widen the distance between them at the starting end of the frame 1 due to the restriction of the first guide rod 4, creating ample space for the convenient insertion of the precast strip 71. The operator can easily and accurately place the precast strip 71 downwards between the two guide rods 22 and between the two pusher rollers 25 of the same guide member 23. The two pusher rollers 25 restrict the precast strip 71 to maintain an upright cross-section, preparing for the subsequent formation of the flattened precast frame 72. Further, as shown in the attached... Figure 1 , 9 As shown in Figure 10, the frame 1 is also provided with first guide rods 4 on both sides below the position where the prefabricated strip 71 is conveyed. The first guide rods 4 on the same side of the frame 1 correspond to each other. The upper and lower first guide rods 4 on the same side of the frame are connected at the starting end of the frame 1 by a 180° arc-shaped rod 41, so that the two guide members 23 of the pushing mechanism 2 conveyed from bottom to top can be gradually opened under the guidance of the lower first guide rod 4, forming a gap outside the protective cover 14 above the frame 1 to accommodate the prefabricated strip 71. Preferably, the lower end of the first guide rod 4 is connected and fixed to the frame 1 by a support rod 42.

[0046] After the prefabricated strip 71 is placed to the pushing mechanism, the transmission chain 12 operates, driving the pusher roller 25 to move towards the forming block 3 via the guide rod 22, so as to push the prefabricated strip 71 to move towards the forming block 3 simultaneously. During this process, the restoring force generated by the elastic deformation of the spring 24 continuously pushes the two guide members 23 and the pusher roller 25 connected to them, so that the guide members 23 and the pusher roller 25 gradually move towards the middle of the frame 1 along the first guide rod 4. When the pushing mechanism 2 moves to the forming block 3, the pusher roller 25 closely abuts against the corner 31 on the side of the forming block 3. During the movement, the prefabricated strip 71 is firmly pressed onto the two sides of the forming block 3. With the help of the outer periphery of the forming block 3 which is adapted to the height of the racket frame, the prefabricated strip 71 is precisely pressed into a prefabricated racket frame 72 that matches the outline of the badminton racket frame.

[0047] Preferably, a conveyor belt 13 can be configured above the first guide rod 4 in front of the support plate 11 inside the frame 1. The drive roller of the conveyor belt 13 and the shaft connecting the sprocket at the same end of the two transmission chains 12 are the same shaft. The structure of this conveyor belt 13 can simultaneously transport the pre-made strip 71 while the pusher roller 25 pushes it, thereby reducing the friction force during the process of the pusher mechanism pushing the pre-made strip 71.

[0048] As attached Figure 3 and 12 As shown, a T-shaped gap is formed inside the T-shaped frame 5, and the T-shaped frame 5 is positioned at the starting end of the forming block 3 facing away from the frame 1. The middle port of the T-shaped frame 5 is used to place the prefabricated center rod 73. After the prefabricated strip 71 is pressed to form the prefabricated frame 72, both ends of the prefabricated frame 72 can be precisely fitted into the corresponding ends of the T-shaped frame 5, thereby achieving precise positioning of both ends of the prefabricated frame 72 and creating favorable conditions for subsequent reliable connection with the prefabricated center rod 73 via carbon cloth. Specifically, a piece of carbon cloth can be pre-laid inside the T-shaped frame 5, covering the bottom surface of the T-shaped frame 5, with a portion of the carbon cloth extending upward along the side wall of the T-shaped frame 5. After the two ends of the prefabricated frame 72 are respectively inserted into the corresponding ports of the T-shaped frame 5, and the end of the prefabricated shaft 73 is inserted into the middle port of the T-shaped frame 5, the portion of carbon cloth extending from the side wall of the T-shaped frame 5 is folded over to tightly cover and adhere to the surfaces of the two ends of the prefabricated frame 72 and the end of the prefabricated shaft 73. This quickly and efficiently completes the initial bonding process between the prefabricated frame 72 and the prefabricated shaft 73. Through the structural design of the T-shaped frame 5 and the carbon cloth laying process, not only is the relative positional accuracy of the prefabricated frame 72 and the prefabricated shaft 73 ensured, but the stability and reliability of their connection are also significantly improved. This effectively simplifies the connection process and improves the overall efficiency and product quality of badminton racket pre-forming processing.

[0049] The two ends of the prefabricated frame 72 and the end of the prefabricated center rod 73 can be fitted into the T-shaped frame 5 by raising and lowering the T-shaped frame 5 relative to the support plate 11. See attached diagram for details. Figure 3 As shown, a clearance opening 111 is provided at the position of the molding block 3 facing away from the starting end of the frame 1, and then refer to the attached diagram. Figure 13 Guide pins 15 are fixed to both sides of the relief opening 111 on the bottom surface of the support plate 11. A base plate 51 is fixed to the bottom of the T-shaped frame 5. Guide holes 511 are provided on both sides of the base plate 51. The two guide holes 511 are respectively fitted to the two guide pins 15, thus forming a sliding fit structure that restricts the vertical movement of the T-shaped frame 5, so that the T-shaped frame 5 can only move vertically relative to the support plate 11. Furthermore, a limiting part (not shown in the attached figure) is fixed to the bottom of the guide pin 15. The diameter of the two guide holes 511 is smaller than the outer diameter of the limiting part. The limiting part blocks the base plate 51, preventing the T-shaped frame 5 from falling.

[0050] When the equipment is in its initial working state, the T-shaped frame 5 is located below the support plate 11, and the precast center rod 73 is placed on the support plate 11 and extends to the position above the middle of the T-shaped frame 5 corresponding to the clearance opening 111, without affecting the pressing process of the precast strip 71 on the support plate 11. After the precast strip 71 is pressed by the pushing mechanism 2 to form the precast frame 72, as shown in the attached... Figure 3 and 4 As shown, the pusher roller 25 precisely pushes the two ends of the prefabricated frame 72 to the positions corresponding to the two ends of the T-shaped frame 5. Then, the T-shaped frame 5 rises from below the support plate 11 onto the support plate 11, allowing the two ends of the prefabricated frame 72 to smoothly embed into the corresponding ends of the T-shaped frame 5. Simultaneously, the prefabricated shaft 73 embeds into the middle end of the T-shaped frame 5, completing the positioning and installation of the two ends of the prefabricated frame 72. This method ensures the precise positioning of the prefabricated frame 72 and the prefabricated shaft 73 within the T-shaped frame 5, significantly improving the positioning accuracy of the frame and shaft during the badminton racket pre-forming process. This lays a solid foundation for reliable connection via carbon fiber, further improving overall processing efficiency and product quality stability.

[0051] As attached Figures 11 to 13As shown, a top rod 52 is fixed to the bottom of the T-shaped frame 5, and the bottom of the top rod 52 facing away from the starting end of the frame 1 has an inclined guide surface. When one of the pushing mechanisms 2 presses the prefabricated strip 71 to form a prefabricated frame 72, along the running direction of the transmission chain 12, the guide rod 22 of the pushing mechanism 2 located in front of the pushing mechanism 2 (that is, the pushing mechanism 2 below the support plate 11 and close to the T-shaped frame 5 at this time) moves to the guide surface of the top rod 52. As the transmission chain 12 continues to run, the guide rod 22 slides along the guide surface, and the inclined structure of the guide surface generates an upward pushing force, which simultaneously lifts the top rod 52 and the T-shaped frame 5 connected to it upward until the T-shaped frame 5 rises above the support plate 11 and reaches the predetermined working position. This design, which uses the self-movement of the pushing mechanism 2 to drive the T-shaped frame 5 to rise, realizes the mechanical linkage and collaborative operation between various parts of the equipment. The automatic lifting and lowering of the T-shaped frame 5 can be completed without the need for an additional driving device. This not only simplifies the overall structure of the equipment, but also improves the continuity and automation of each process, effectively improving the overall efficiency of badminton racket frame preforming processing.

[0052] To further ensure the positional stability of the T-shaped frame 5 after it is raised, a hook groove 521 is provided on one side of the top rod 52. At the same time, a pivot seat 53 and a limiting hook 54 are provided at the bottom of the support plate 11. The pivot seat 53 is fixed to the bottom of the support plate 11. One end of the limiting hook 54 and the pivot seat 53 are rotatably connected by a pivot shaft. The limiting hook 54 and the pivot seat 53 are connected to a torsion spring at the pivot shaft position. Specifically, the torsion spring can be sleeved on the pivot shaft or outside the pivot shaft. The torsion arms at both ends of the torsion spring abut against the pivot seat 53 and the limiting hook 54 respectively, so that the elastic force of the torsion spring torsion forms a torque that pushes the limiting hook 54 toward the top rod 52 to swing. When the push rod 52 lifts the T-shaped frame 5 to a predetermined position above the support plate 11, the push rod 52 rises to the height corresponding to the limit hook 54. At this time, the limit hook 54 swings towards the push rod 52 under the elastic force of the torsion spring, and its end is precisely embedded in the hook groove 521, forming a reliable mechanical locking structure. Through this locking cooperation, even if the pushing mechanism 2 at the bottom of the support plate 11 disengages from the push rod 52, the push rod 52 and the T-shaped frame 5 can still remain fixed relative to the support plate 11. This effectively prevents the T-shaped frame 5 from accidentally falling due to external force or its own weight in subsequent processes, ensuring that the positioning accuracy of the precast frame 72 and the precast middle rod 73 within the T-shaped frame 5 is stable and reliable. This provides a solid guarantee for the smooth progress of subsequent carbon cloth bonding and other processes, further improving the stability of equipment operation and the consistency of processing quality.

[0053] Please refer to the appendix. Figure 15 and 16A pressure rod 55 is fixed to the side of the limiting hook 54 facing the starting end of the frame 1. The pressure rod 55 is L-shaped, and the horizontal section 551 of the pressure rod 55 is fixed to the limiting hook 54. Specifically, a through hole 522 is provided on the top rod 52, and the horizontal section 551 of the pressure rod 55 passes through the through hole 522 and then through the limiting hook 54. Nuts are screwed and connected at the two ends of the horizontal section 551 located on the limiting hook 54 to achieve a firm fixation between the pressure rod 55 and the limiting hook 54. At the same time, the vertical section 552 of the pressure rod 55 passes through the support plate 11 and the forming block 3. The two guide rods 22 of the pushing mechanism 2 are fixed to the transmission component 26 at the middle position. The end face of the front end of the transmission component 26 is an arc surface or a slope. When the pushing mechanism 2 moves to the forming block 3, the arc-shaped surface or inclined surface at the front end of the transmission component 26 will contact the pressure rod 55 during the movement and press it down to the bottom position. During the downward swinging process, the pressure rod 55 will push the limiting hook 54 to swing away from the top rod 52 until the limiting hook 54 disengages from the hook groove 521. At this time, the top rod 52 loses the constraint of the limiting hook 54, so that the T-shaped frame 5 automatically descends to the bottom of the support plate 11 under the combined action of its own weight and the weight of the top rod 52. This realizes that during the process of the pushing mechanism 2 pressing the prefabricated strip 71 to form the prefabricated frame 72, the pushing mechanism 2 automatically drives the T-shaped frame 5 to descend to the bottom of the support plate 11 and reset. This design, which triggers the limit release through the movement of the pushing mechanism 2 itself, achieves automated control of the descent of the T-shaped frame 5. The limit release and reset process can be completed without additional driving components, which not only ensures the precise linkage of the actions of each component, but also simplifies the equipment structure, effectively improves the continuity and reliability of equipment operation, and ensures that the prefabricated frame 72 can smoothly enter the next process after processing.

[0054] Furthermore, the width of the transmission component 26 is greater than the width of the T-shaped frame. This allows the spring 24 to push the two guide components 23 and their connected pusher rollers 25 to firmly press the prefabricated strip 71 onto both sides of the forming block 3, forming a shape that matches the height of the racket frame. After this, the pusher rollers 25 of the two guide components 23 are blocked by the transmission component 26 at the side of the clearance opening 111, thus not affecting the lifting and lowering of the T-shaped frame 5. Moreover, because the prefabricated strip 71 has a certain degree of rigidity, when the pusher rollers 25 press the prefabricated strip 71 to the corner of the forming block 3 near the clearance opening 111, the end of the prefabricated racket frame 72 formed by the prefabricated strip 71 will extend at an angle towards the clearance opening 111. After the T-shaped frame 5 rises, its corresponding two ends can fit over the two ends of the prefabricated strip 71. Furthermore, the upper edge of the T-shaped frame 5 can be provided with an inclined chamfer or an upward and outward folded edge to serve as a guide, so that the T-shaped frame 5 can more smoothly fit the two ends of the prefabricated frame 72 during the rising process.

[0055] In addition, as attached Figure 8As shown, the pusher roller 25 includes a connecting pin 251 and a bushing 252. A vertical connecting hole is provided in the guide member 23 at the mounting position of the pusher roller 25. The upper half of the connecting pin 251 is machined into a reduced-diameter section, and a shoulder structure is formed below the reduced-diameter section. Bearings are embedded and fixed at both ends inside the bushing 252. The lower half of the connecting pin 251 passes through the inner rings of the two bearings inside the bushing 252 with an interference fit. The bushing 252 is then limited to the lower half of the connecting pin 251 by a retaining spring, allowing the bushing 252 to rotate coaxially only relative to the connecting pin 251. The reduced-diameter section of the connecting pin 251 passes through the connecting hole to the shoulder, abutting against the guide member 23. The connecting pin 251 is then fixed by tightening the fixing nut 253 and the end of the reduced-diameter section, thus restricting the bushing 252 of the pusher roller 25 to rotate only relative to the guide member 23.

[0056] When the pusher roller 25 is working, it contacts the preformed strip 71 with the help of the bushing 252 and presses it against the side of the forming block 3. The rotation function of the bushing 252 can effectively reduce the friction during the movement of the pusher roller 25, reduce the wear on the surface of the preformed strip 71, and ensure the forming quality of the preformed frame 72. At the same time, when the T-shaped frame 5 rises to embed the two ends of the preformed frame 72 into its respective ends, the T-shaped frame 5 can simultaneously lift the pusher roller 25. The lifting and lowering characteristics of the pusher roller 25 avoid interference with the T-shaped frame 5, ensuring that the pusher roller 25 can move forward smoothly under the drive of the transmission chain 12, ensuring the smooth operation of the various components of the equipment, and further improving the stability and efficiency of the preformed frame 72 processing.

[0057] Continue to refer to the appendix Figure 15 and 16 The pressing mechanism includes a swing seat 61, a swing element 62, and a pressure plate 63, with a gap formed inside the forming block 3. (See attached diagram.) Figure 4 A through groove 301 is provided on the side of the molding block 3 facing away from the starting end of the frame 1. The through groove 301 corresponds to the side above the relief opening 111. The swing seat 61 is located inside the molding block 3 and fixed to the support plate 11. The swing member 62 swings relative to the through groove 301. The pressure plate 63 is fixed to the swing member 62. After the T-shaped frame 5 rises onto the support plate 11, the swing seat 61 swings outward from the through groove 301, driving the pressure plate 63 to press into the T-shaped frame, so as to press the carbon cloth 74 pre-inserted in the T-shaped frame 5 against the two ends of the prefabricated frame 72 and the end of the prefabricated middle rod 73.

[0058] The pressing mechanism also includes a first connecting rod 641, a second connecting rod 642, and a drive shaft 651. The drive shaft 651 is restricted to rotation relative to the support plate 11. Specifically, a bearing seat can be fixed to the bottom surface of the support plate 11, and the drive shaft 651 is fixed to the bearing seat and restricted to rotation only. One end of the first connecting rod 641 is pivotally connected to the swing seat 61, and both ends of the second connecting rod 642 are pivotally connected to the drive shaft 651 and the first connecting rod 641, respectively. Pivoting structures not specifically described in this embodiment can all be achieved by inserting pins. When the T-shaped frame 5 rises above the support plate 11, the drive shaft 651 rotates, and through the transmission action of the first connecting rod 641 and the second connecting rod 642, the second connecting rod 642 pushes the swing seat 61 to swing outward of the through groove 301, thereby driving the pressing plate 63 to swing outward of the through groove 301 and downward.

[0059] Furthermore, the pressing mechanism also includes a drive shaft 652, a gear 661, and a rack 662. The drive shaft 652 is restricted to rotation within the frame 1. Specifically, this is achieved by fixing a crossbeam plate 16 within the frame 1 and fixing a bearing seat below the crossbeam plate 16, allowing the drive shaft 652 to pass through the bearing seat below the crossbeam plate 16, thus enabling the drive shaft 652 to rotate only. One end of the drive shaft 652 forms a transmission connection with the drive shaft 651. Specifically, synchronous pulleys 671 are fixed on both the drive shaft 652 and the drive shaft 651, and the transmission connection between the drive shaft 651 and the drive shaft 652 is achieved by a synchronous belt 672 sleeved on and meshing with the two synchronous pulleys 671, with the synchronous belt 672 passing through the crossbeam plate 16. The other end of the drive shaft 652 is fixed to the gear 661, and the transmission component 26 of the pushing mechanism 2 is fixed to the rack 662. After one set of pushing mechanisms 2 pre-forms the long strips 71 into pre-formed frame 72, along the running direction of the transmission chain 12, the pushing mechanism 2 located in front of it moves below the support plate 11. Its transmission component 26 moves until the rack 662 and gear 661 mesh. As the pushing mechanism 2 moves, the rack 662 drives the gear 661 to rotate, thereby driving the transmission shaft 652 to rotate, causing the drive shaft 651 to rotate and drive the swinging component 62 to swing. It is worth mentioning that the rack 662 is located on one side of the transmission component 26, so it does not affect the middle part of the transmission component 26 from lifting the top rod 52. The above structure enables a continuous process in which, during the movement of the pusher mechanism 2 under the support plate 11 driven by the transmission chain 12, the pusher mechanism 2 first moves to the top rod 52, causing the T-shaped frame 5 to automatically rise so that the two ends of the precast frame 72 and the precast middle rod 73 are respectively embedded in the three ports of the T-shaped frame 5. Then, it moves to the gear 661, causing the pressure plate 63 to press down the carbon cloth to glue the precast frame 72 and the precast middle rod 73. In this process, the movement of the pusher mechanism 2 synchronously drives the coordinated action of multiple components, eliminating the need for multiple additional drive sources. This simplifies the overall structure of the equipment, ensures precise coordination and efficient connection between each process, and significantly improves the automation level and production efficiency of the equipment.

[0060] Please refer to the appendix. Figure 6 Both sides of the swing base 61 are provided with a through horizontal groove 611 and an arc groove 612. The horizontal groove 611 is horizontally positioned below the swing base 61, and the arc groove 612 is horizontally positioned above it, with the lower end of the arc groove 612 connecting to the horizontal groove 611. The swing member 62 has a first pivot pin 621 and a second pivot pin 622 at its two ends, both located within the horizontal groove 611 to restrict the horizontal movement of the swing member 62 on the swing base 61. When the swing member 62 is pushed until the first pivot pin 621 touches the end of the horizontal groove 611, the second pivot pin 622 is precisely at the junction of the horizontal groove 611 and the arc groove 612. Continuing to push the swing member 62 causes the second pivot pin 622 to embed upwards into the arc groove 612, causing the swing member 62 to swing upwards and outwards from the forming block 3. During the movement of the swinging component 62, the pressure plate 63 forms a motion trajectory of first moving horizontally and then swinging downwards. This causes the pressure plate 63 to first move laterally out of the through groove 301 and move to a position directly above the T-shaped frame 5, before swinging downwards. This folds the carbon cloth extending from the side wall of the T-shaped frame 5 downwards, ensuring the carbon cloth tightly covers and adheres to both ends of the prefabricated frame 72 and the end surface of the prefabricated center rod 73. This achieves the automatic completion of the initial bonding process between the prefabricated frame 72 and the prefabricated center rod 73. This structure, through the composite motion trajectory formed by the horizontal groove 611 and the arc groove 612, ensures the accuracy and continuity of the pressure plate 63's movement. It avoids direct swinging of the pressure plate 63 and interference with other components, while reliably completing the carbon cloth folding operation, effectively improving the automation level and processing quality stability of the bonding process.

[0061] Referring again to the attached drawings, the pressing mechanism also includes a counterweight 68, which is fixed to the synchronous belt 672. When the drive shaft 651 rotates, it drives the swinging member 62 upward and outward of the forming block 3, and the synchronous belt 672 rotates accordingly, causing the counterweight 68 to rise. When the counterweight 68 descends onto the crossbeam plate 16, the weight of the counterweight 68 itself drives the synchronous belt 672 to rotate, causing the drive shaft 651 to rotate and drive the swinging seat 61 and the pressure plate 63 to swing into the forming block 3. This structure allows the pusher mechanism 2 to move until the rack 662 disengages from the gear 661, and under the action of the counterweight 68's own weight, it can drive the drive shaft 651 to rotate. Through the transmission action of the first connecting rod 641 and the second connecting rod 642, the swinging member 62 is automatically pulled downward and swings into the forming block 3, thereby realizing the automatic reset of the pressure plate 63 into the forming block 3, so as to facilitate the removal of the pre-connected prefabricated frame 72 and prefabricated middle rod 73 from the forming block 3 and the T-shaped frame 5. By converting the gravitational potential energy of the counterweight 68 into mechanical kinetic energy, the reset action of the pressure plate 63 can be completed without an additional drive device. This simplifies the power system structure of the equipment and ensures the stability and timeliness of the reset action of the pressure plate 63. It ensures that the pressing mechanism can quickly return to its initial state after completing the carbon cloth pressing process, preparing for the next processing cycle and further improving the continuity and automation level of the equipment operation.

[0062] Preferably, protective covers 14 are provided on both ends of the frame 1 to cover the top of the sprockets at both ends of the transmission chain 12, and the protective cover 14 at the starting end of the frame 1 is wider, so that the protective cover 14 forms a workbench, which facilitates the rolling of the prefabricated strip 71 above the protective cover 14.

[0063] Based on the above equipment structure, this equipment achieves the pre-forming processing of badminton racket frames through the following workflow, and the specific steps of the coordinated operation of each component are as follows:

[0064] The operator places the rolled pre-made strip 71 at the starting end of the frame 1 between the two guide rods 22 of the pushing mechanism 2 output from the protective cover 14, and between the pushing rollers 25 of the guide member 23. At this time, the pushing mechanism 2 is located at the starting end of the frame 1, and the first guide rod 4 forces the guide member 23 to move to the outside of the frame 1 to widen the gap.

[0065] The transmission chain 12 operates, driving the pushing mechanism 2 to move towards the forming block 3. The pushing roller 25 pushes the preformed strip 71 to move towards the forming block 3 simultaneously. During the movement of the pushing mechanism 2, the elastic force of the spring 24 pushes the guide 23 to move along the first guide rod 4 towards the middle of the frame 1, so that the pushing roller 25 gradually moves to the middle area of ​​the preformed strip 71.

[0066] When the pushing mechanism 2 moves to the forming block 3, the forming block 3 squeezes the pushing roller 25 toward the end of the guide rod 22. At the same time, the spring 24 pushes the pushing roller 25 toward the forming block 3, so that the pushing roller 25 closely abuts against the side of the forming block 3, thereby pressing the prefabricated strip 71 into a prefabricated frame 72 that matches the outline of the frame. During this process, the transmission component 26 contacts the pressure rod 55 and presses it down. The pressure rod 55 pushes the limiting hook 54 to disengage from the hook groove 521 of the top rod 52, so that the top rod 52 is released from the limitation of the limiting hook 54, and the T-shaped frame 5 descends to the support plate 11.

[0067] The aforementioned pushing mechanism 2 located on the forming block 3 continues to move, while the guide rod 22 of the pushing mechanism 2 located in front of it contacts the guide surface of the top rod 52 under the support plate 11 and continues to move and slide, so as to push the top rod 52 upward, so that the T-shaped frame 5 rises above the support plate 11, the two ends of the precast frame 72 are embedded into the corresponding ports of the T-shaped frame 5, the end of the precast middle rod 73 is embedded into the middle port of the T-shaped frame 5, and the limiting hook 54 is embedded into the hook groove 521 of the top rod 52 under the action of the torsion spring, so as to lock the height position of the T-shaped frame 5;

[0068] The aforementioned pushing mechanism 2 located on the molding block 3 continues to move, while the transmission component 26 of the pushing mechanism 2 located in front of it moves synchronously under the support plate 11, so that the rack 662 fixed on the transmission component 26 meshes with the gear 661, driving the transmission shaft 652 and the drive shaft 651 to rotate. The rotation of the drive shaft 651 is transmitted through the first connecting rod 641 and the second connecting rod 642, causing the swinging component 62 to swing outward from the molding block 3, and the pressure plate 63 moves out of the through groove 301 and presses down into the T-shaped frame 5, folding the carbon cloth to cover both ends of the prefabricated frame 72 and the end of the prefabricated middle rod 73;

[0069] As the pushing mechanism 2 continues to move, the rack 662 disengages from the gear 661, and the counterweight 68 descends, driving the drive shaft 651 to rotate in the opposite direction. Through the linkage transmission, the swinging component 62 and the pressure plate 63 are reset into the forming block 3. At this time, the prefabricated frame 72 and the prefabricated middle rod 73 can be removed, and a piece of carbon cloth can be laid in the T-shaped frame 5 again. It is worth mentioning that after the prefabricated frame 72 and the prefabricated middle rod 73 are removed, they need to be glued again with multiple pieces of carbon cloth to make them firm.

[0070] The transmission chain 12 operates continuously, driving the pushing mechanism 2 to return or enter the next cycle.

[0071] The above-described working method enables continuous automated production of badminton racket frame preforming. By precisely controlling the synchronous operation of the pushing mechanism 2 and the transmission chain 12, the preformed strip 71 is gradually pressed onto the forming block 3 to form a preformed racket frame 72 of consistent size. The T-shaped frame 5 lifting mechanism completes the rapid and accurate positioning of the two ends of the preformed racket frame 72 and the end of the preformed shaft 73. The pressing mechanism is linked to automatically complete the carbon cloth folding, covering and bonding process. At the same time, the transmission chain 12 drives the coordinated action of various components to achieve full-process mechanical linkage of forming, pressing, positioning and locking, carbon cloth pressing and mechanism reset. This significantly improves the shape accuracy of the racket frame and the reliability of the shaft connection, effectively ensuring product consistency and improving production efficiency.

[0072] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A badminton racket frame pre-forming device, characterized in that, The device includes: A frame, on which a support plate is fixed, and a transmission chain is provided on both sides of the support plate, and the two transmission chains run synchronously; The material pushing mechanism includes a connector, a guide rod, a guide member, a spring, and a pusher roller. The connector is fixed at corresponding positions of the two transmission chains. The two guide rods are fixedly connected between the two connectors. The two guide rods are fitted with the two guide members, and the guide rods are fitted with springs. The two ends of the springs abut against the connector and the guide members respectively. The elastic force of the springs forms a pushing force that pushes the guide members toward the middle of the frame. The guide members are provided with two pusher rollers along the conveying direction above the transmission chains. A molding block is fixed in the middle of the support plate, and the outer periphery of the molding block matches the outline of the racket frame. A first guide rod is fixed between the starting end of the frame and the molding block, and two first guide rods are mirror-arranged on the frame. Both first guide rods are inclined from the side of the frame towards the middle of the frame. The end of the first guide rod near the molding block is close to the corner of the molding block, and the end of the first guide rod near the starting end of the frame is close to the side of the frame. When the guide member moves to the starting end of the frame, it is located on the side of the first guide rod facing outward from the frame. A T-shaped frame is provided, with a T-shaped gap inside. The T-shaped frame is positioned at the starting end of the forming block facing away from the frame. The middle port of the T-shaped frame is used to place a prefabricated center rod. The prefabricated strip is embedded between the two pusher rollers of the same guide member between the two guide rods. The transmission chain moves through the guide rods to drive the pusher rollers to move, thereby pushing the prefabricated strip to the forming block. The springs at both ends of the guide rods push the two guide members to move along the first guide rod towards the middle of the frame, so that the pusher rollers move against the side of the forming block, pressing the prefabricated strip against both sides of the forming block to form a prefabricated racket frame that matches the racket frame contour. The two ends of the prefabricated racket frame are respectively fitted into the corresponding ends of the T-shaped frame.

2. The device as described in claim 1, characterized in that, The forming block is provided with a clearance opening at the position opposite to the starting end of the frame. The T-shaped frame is embedded in the clearance opening and can be raised and lowered relative to the support plate. In the initial state, the T-shaped frame is located under the support plate. After the prefabricated strip is pressed to form the prefabricated frame, the T-shaped frame rises, so that the two ends of the prefabricated frame are respectively embedded in the corresponding two ends of the T-shaped frame.

3. The device as described in claim 2, characterized in that, The two guide rods of the pushing mechanism are fixed to the transmission component in the middle position. The width of the transmission component is greater than the width of the T-shaped frame. The spring pushes the two guide rods and the pusher rollers connected to them to firmly press the pre-made strip onto the two sides of the forming block. After forming a shape that matches the height of the frame outline, the pusher rollers of the two guide rods are blocked by the transmission component at the side of the clearance opening.

4. The device as described in claim 2 or 3, characterized in that, A top rod is fixed to the bottom of the T-shaped frame, and the bottom of the top rod facing away from the starting end of the frame has an inclined guide surface. Multiple sets of pushing mechanisms are arranged at equal intervals on the transmission chain. When one set of pushing mechanisms presses the prefabricated strip to form the prefabricated frame, the guide rod located in front of the pushing mechanism moves to the top rod along the running direction of the transmission chain and moves in contact with the guide surface to lift the top rod and the T-shaped frame onto the support plate.

5. The device as described in claim 4, characterized in that, A hook groove is also provided on one side of the top rod, and a pivot seat and a limiting hook are also provided at the bottom of the support plate. The pivot seat is fixed to the bottom of the support plate, and one end of the limiting hook is rotatably connected to the pivot seat. A torsion spring is connected to the limiting hook and the pivot seat at the pivot shaft position. The torsion spring generates a torque that pushes the limiting hook toward the swinging top rod. After the top rod and the T-shaped frame are lifted onto the support plate, the end of the limiting hook is embedded in the hook groove.

6. The device as described in claim 5, characterized in that, The limiting hook has a pressure rod fixed to the side facing the starting end of the frame. The pressure rod is L-shaped, with its horizontal section fixed to the limiting hook and its vertical section passing through the support plate and the forming block. The two guide rods of the pushing mechanism have a transmission component fixed in the middle position. The end face of the transmission component is an arc-shaped surface or an inclined surface. When the pushing mechanism moves to the forming block, the arc-shaped surface of the transmission component presses down the pressure rod, causing the pressure rod to swing the limiting hook away from the top rod, and swing until the limiting hook leaves the hook groove, so that the T-shaped frame descends under the support plate.

7. The device as described in any one of claims 2, 3, 5, and 6, characterized in that, Guide pins are fixed on both sides of the relief opening on the bottom surface of the support plate. A limiting part is fixed at the bottom of the guide pin. A base plate is fixed at the bottom of the T-shaped frame. Guide holes are provided on both sides of the base plate. The two guide holes are respectively adapted to fit the two guide pins, and the diameter of the two guide holes is smaller than the outer diameter of the limiting part.

8. The device as described in claim 1, characterized in that, The equipment also includes a fabric pressing mechanism, which includes a swing seat, a swing member, and a pressure plate. A gap is formed inside the forming block, and a through groove is provided on the side of the forming block facing away from the starting end of the frame. The swing seat is fixed inside the forming block, the swing member swings relative to the through groove, and the pressure plate is fixed to the swing member. After the T-shaped frame rises above the support plate, the swing seat swings outward from the through groove, driving the pressure plate to press into the T-shaped frame, so as to press the carbon cloth pre-inserted in the T-shaped frame towards both ends of the prefabricated frame and the end of the prefabricated middle rod.

9. The device as described in claim 8, characterized in that, The pressing mechanism further includes a first connecting rod, a second connecting rod, and a drive shaft. The drive shaft is restricted to rotate relative to the support plate. One end of the first connecting rod is pivotally connected to the swing seat. Both ends of the second connecting rod are pivotally connected to the drive shaft and the first connecting rod, respectively. After the T-shaped frame rises above the support plate, the drive shaft rotates and drives the swing seat to swing outward from the through groove through the first connecting rod and the second connecting rod.

10. The device as claimed in claim 9, characterized in that, The pressing mechanism further includes a drive shaft, a gear, and a rack. The drive shaft is restricted to rotate within the frame. One end of the drive shaft is connected to the drive shaft, and the other end of the drive shaft is fixed to the gear. The two guide rods of the pushing mechanism are fixed to the transmission component in the middle position, and the rack is fixed to the transmission component. When one set of the pushing mechanism presses the prefabricated strip to form the prefabricated frame, the transmission component located in front of the pushing mechanism moves under the support plate along the running direction of the transmission chain, so that the rack and the gear mesh to drive the drive shaft to rotate, and the drive shaft rotates accordingly.

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