A frame pre-forming die for racket processing

Abstract

The present invention relates to the field of racket processing technology, and is mainly used for racket processing. A frame pre-forming mold for racket processing includes a mold platform, an inner template and a material pressing and shaping roller, wherein: a cavity adapted to the shape of the inner template is opened in the middle of the mold platform, the inner template is installed in the cavity, and the width of the cavity is greater than the width of the inner template so that a material pressing channel is formed between the side of the inner template and the side wall of the cavity. After pre-storing the material, the material pressing and shaping roller moves from the outside of the material along the periphery of the inner template so that the material is tightly attached to the side of the inner template. During this process, the side clamps on both sides are synchronously translated to the racket throat position, and then the material pressing and shaping roller cooperates with the side clamps to move synchronously during movement, so as to keep the entire material in a tensioned state on the inner template. In the absence of manual intervention, this not only increases the shaping speed, but also increases the tension during fitting, and can provide precision for cutting.

Description

Technical Field

[0001] The invention relates to the technical field of racket processing, in particular to a frame pre-forming die for racket processing. Background Art

[0002] During the production process of a racket, the racket needs to go through the following steps: cutting carbon fiber prepreg, stamping high-foam EVA, molding, rough grinding, spraying primer and filling glue. In the process of cutting carbon fiber prepreg, the existing process is to roll the cut fiber material into a cylindrical shape, then place it on the periphery of the mold, close to the outside of the mold, and then manually cut the excess material at the tail end.

[0003] In the above operation, the entire operation process requires manual loading and shaping operations, and the position of the entire material needs to be adjusted many times during the process so that it fits evenly and tightly on the periphery of the mold. This operation is very troublesome, or the material needs to be tightened at both ends at the beginning of the operation, so the other steps are also very cumbersome, especially when cutting excess length of material. In this way, the entire processing flow has a low degree of mechanization, complicated operation, and cannot achieve continuous feeding operation, which is inefficient. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a frame pre-forming mold for racket processing.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A frame pre-forming mold for racket processing includes a mold platform, an inner template and a pressing and shaping roller, wherein: a cavity adapted to the shape of the inner template is opened in the middle of the mold platform, the inner template is installed in the cavity, the width of the cavity is greater than the width of the inner template so that a pressing channel is formed between the side of the inner template and the side wall of the cavity, two pressing and shaping rollers are provided and symmetrically distributed on both sides of the pressing channel, and the pressing and shaping rollers bend the workpiece and fit it on the inner template by moving back and forth between the top and bottom of the inner template along the pressing channel to achieve shaping of the workpiece.

[0007] Furthermore, a supporting portion extends outward from the bottom end of the inner template side, and the distance the stripping portion extends outward is less than the thickness of the workpiece. When the workpiece is extruded and shaped on the surface of the inner template, the supporting portion supports the bottom of the shaped workpiece.

[0008] Furthermore, the pressing and shaping roller is rotatably sleeved on the roller shaft, and the bottom end of the roller shaft is slidably set on the wide guide plate. One end of the wide guide plate is threadedly sleeved on the power screw through a power screw sleeve, and one end of the power screw is connected to the output shaft of the rotating motor. The power screw controls the pressing and shaping roller to move back and forth between the top and bottom of the inner template through forward and reverse rotation.

[0009] Furthermore, the top and bottom ends of the inner template are both rotatably connected to the inner wall of the cavity, and a ball is fixedly provided on one of the roller shafts. A rolling groove is provided on one side surface of the inner template. When the pressing and shaping roller with the ball presses the material, the ball displaces in the rolling groove and supports the inner template to stabilize in a horizontal state.

[0010] Furthermore, the top end of the roller shaft passes through the pressing and shaping roller and is fixedly connected to an upper baffle. When the pressing and shaping roller moves in the pressing channel, the upper baffle moves on the upper surface of the inner template.

[0011] Furthermore, wide throat channels are provided on both sides of the mold platform corresponding to the throat, and side clamps are provided on both sides below the mold platform that can extend from the wide throat channels and squeeze the workpiece corresponding to the throat.

[0012] Furthermore, the mold platform is provided with handle tail transverse channels on both sides corresponding to the handle tail end, and cutting blades capable of cutting the two ends of the workpiece from both sides are provided in the handle tail transverse channels.

[0013] Furthermore, the side clamping block and cutting blade located on the same side are respectively installed at both ends of the side displacement structure, and the two side displacement structures move synchronously relative to each other or move in opposite directions. When the pressing and shaping roller passes through the throat, the side displacement structure drives the side clamping block and the cutting blade to move toward the workpiece. Before the pressing and shaping roller passes through the cutting blade, the side clamping block is pressed on the workpiece. After the pressing and shaping roller passes through the cutting blade, the cutting blade cuts the workpiece.

[0014] Furthermore, the mold platform is provided with a workpiece storage unit at a position corresponding to the top of the top, and the workpiece storage unit includes a conveyor belt, a front baffle and a rear baffle arranged above the conveyor belt and distributed parallel to each other front and back, and a pressure plate arranged on the rear baffle for pressing the workpiece against the rear side surface of the front baffle, and a dropping gap is formed between the front baffle and the conveyor belt for the workpiece to fall onto the mold platform.

[0015] Furthermore, the elastic pressure plate includes a plate body portion arranged between the front baffle and the rear baffle, a pressure rod passing through the rear baffle and with its front end fixed to the pressure plate, a rod sleeve with its front end fixed to the rear side of the rear baffle and sleeved on the pressure rod, a rod spring arranged in the rod sleeve and providing an elastic force for the pressure rod to extend forward, and a push rod with its top end fixed to the pressure rod and its bottom end extending from the bottom of the rod sleeve, which is used to be pushed backward by the material pressing and shaping roller to cause the pressure rod to move backward.

[0016] The present invention has the following beneficial effects:

[0017] 1. The technical solution of the present application, in the specific implementation process, after pre-placing the material, uses the material pressing and shaping roller to move from the outside of the material along the periphery of the inner template, so that the material is tightly fitted to the side of the inner template. During this process, the side clamps on both sides are synchronously translated to the throat position, and then the material pressing and shaping roller cooperates with the side clamps to move synchronously during movement, so as to keep the entire material in a tensioned state on the inner template. Without manual intervention, this not only increases the shaping speed, but also increases the tension during fitting, and can provide precision for cutting.

[0018] 2. In the present application, after the material is fitted to the periphery of the inner template, the cutting blade and the side clamp can be linked to move synchronously in the latter part of the stroke of the material pressing and shaping roller. When the side clamp presses the material, the two cutting tools cut the excess space at the tail end of the material. The action is highly continuous and the operation steps are simple, thereby improving the overall operating efficiency.

[0019] 3. In the present application, after completing the first round of operation, when the pressing and shaping roller returns to its original position, the ball on the roller shaft moves from the smooth position of the rolling groove to the spiral position, which enables the inner template to be flipped, so that the workpiece cut by the upper wheel is automatically unloaded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a top view of a pre-forming mold for a racket frame according to the present invention;

[0021] Figure 2 It is a cross-sectional view of a top view of a pre-forming mold for a racket frame according to the present invention;

[0022] Figure 3 It is a left side schematic diagram of the internal structure of a frame pre-forming mold for racket processing according to the present invention;

[0023] Figure 4 This is a frame pre-forming mold for racket processing. Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a frame pre-forming mold for racket processing. Figure 3 Enlarged view of point B in the middle;

[0025] Figure 6 This is a state diagram of a racket frame pre-forming die before blanking;

[0026] Figure 7 This is a frame pre-forming mold for racket processing. Figure 6 Enlarged view of point C in the middle;

[0027] Figure 8This is a state diagram of a racket processing frame pre-forming die after blanking;

[0028] Figure 9 This is a frame pre-forming mold for racket processing. Figure 8 Enlarged view of point D in the middle;

[0029] Figure 10 It is a schematic diagram of a side displacement structure in a pre-forming die for a racket frame according to the present invention;

[0030] Figure 11 This is a schematic diagram of the internal structure of a frame pre-forming mold for racket processing according to the present invention;

[0031] Figure 12 This is a frame pre-forming mold for racket processing. Figure 11 Enlarged view of point E in the middle. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] As shown in the figure, an embodiment of the present invention provides a frame pre-forming mold for racket processing, which includes a mold platform 1, an inner template 2 and a pressing and shaping roller 3.

[0034] A cavity is defined in the center of the mold platform 1, matching the shape of the inner mold plate 2. The inner mold plate 2 is mounted on the inner wall of the cavity. The upper surface of the inner mold plate 2 extends from the top of the mold platform 1. The width of the cavity is greater than that of the inner mold plate 2, forming a material pressing channel 4 between the side of the inner mold plate 2 and the side wall of the channel.

[0035] There are two pressing and shaping rollers 3 and they are symmetrically distributed on both sides of the pressing channel 4. The pressing and shaping rollers 3 bend the workpiece and fit it on the inner template 2 by moving between the top and bottom of the inner template 2 along the pressing channel 4 to shape the workpiece.

[0036] Specifically, in this embodiment, when the pressing and shaping roller 3 is in its initial position, there is a gap between it and the top of the inner template 2, which is used to place the workpiece to be shaped. As the pressing and shaping roller 3 moves from the top to the bottom of the inner template 2, the pressing channel 4 enables the pressing and shaping roller 3 to press the workpiece toward the side of the inner template 2. As the workpiece adheres to the side surface of the inner template 2, the workpiece is shaped.

[0037] The pressing and shaping roller 3 is rotatably mounted on the roller shaft 6. The bottom end of the roller shaft 6 is slidably mounted on the wide guide plate 7. A pressing spring is provided between the wide guide plate 7 and the bottom end of the roller shaft 6 to provide a pressing force for the pressing and shaping roller 3. Specifically, a first chute is provided on the upper surface of the wide guide plate 7. A first slider is fixedly mounted on the bottom end of the roller shaft 6. The first slider is slidably mounted on the first chute. The pressing spring is disposed within the first chute, with its two ends respectively connected to the slider and the inner wall surface of one end of the first chute.

[0038] One end of the wide guide plate 7 is threadedly mounted on the power screw 9 through the power screw sleeve 8, and one end of the power screw 9 is connected to the output shaft of the rotating motor 10. The power screw 9 controls the pressing and shaping roller 3 to move back and forth in the length direction of the inner template 2 by forward and reverse rotation.

[0039] Specifically, in this embodiment, the mold platform 1 is configured as a box structure, the rotating motor 10 is installed in the box, and the end of the power screw 9 away from the rotating motor 10 is rotatably supported on the inner wall surface of the mold platform 1. By starting the rotating motor 10 to rotate forward and reverse, the power screw 9 can be controlled to rotate forward and reverse, so as to achieve the purpose of controlling the displacement of the pressing and shaping roller 3.

[0040] A support portion 5 extends outward from the bottom end of the side of the inner template 2. The distance the material removal portion extends outward is less than the thickness of the workpiece. When the workpiece is extruded and shaped on the surface of the inner template 2, the support portion 5 supports the bottom of the shaped workpiece. The upper surface of the support portion 5 is flush with the upper surface of the mold platform 1.

[0041] The top end of the roller shaft 6 passes through the pressing and shaping roller 3 and is fixedly connected to a circular upper baffle 13. As the pressing and shaping roller 3 moves back and forth between the top and bottom of the flap along the pressing channel 4, the upper baffle 13 moves on the upper surface of the inner template 2. At this time, the upper baffle 13 cooperates with the support portion 5 and the upper surface of the mold platform 1 to limit the workpiece, preventing the workpiece from twisting during the shaping process and improving the shaping effect.

[0042] Furthermore, the mold platform 1 of the embodiment of the present invention is provided with a workpiece storage unit corresponding to a position above the top of the racket, and the workpiece storage unit includes a conveyor belt 19 , a front baffle 20 , a rear baffle 21 and a pressure plate 22 .

[0043] The conveyor belt 19 is rotatably installed on the mold platform 1, and the front baffle 20 and the rear baffle 21 are distributed parallel to each other and are located above the conveyor belt 19. The workpiece to be shaped is placed side by side in the front-to-back direction between the front baffle 20 and the rear baffle 21 and is supported by the upper surface of the conveyor belt 19. A dropping gap 23 is formed between the front baffle 20 and the conveyor belt 19 for the workpiece to fall onto the mold platform 1. The distance between the dropping gap 23 and the top of the inner template 2 is less than the width of the workpiece.

[0044] The pressure plate 22 is arranged on the front side of the rear baffle 21, and it presses the workpiece against the rear side of the front baffle 20 by moving forward. At this time, the workpiece located at the front is just located in the drop gap 23 in the front-to-back direction, and is fixed directly above the drop gap 23 in the height direction.

[0045] In this embodiment of the present invention, the height between the top surface of the conveyor belt 19 and the upper surface of the mold platform 1 is set to match the width of the workpiece. In this case, when the workpiece falls from the drop gap 23, the upper middle portion of its rear side will be supported by the front end bend of the conveyor belt 19, preventing the workpiece from falling backward.

[0046] Specifically, the elastic pressure plate 22 includes a plate body 22.1 arranged between the front baffle 20 and the rear baffle 21, a pressure rod 22.2 passing through the rear baffle 21 and with its front end fixed to the pressure plate 22, a rod sleeve 22.3 with its front end fixed to the rear side of the rear baffle 21 and sleeved on the pressure rod 22.2, a rod spring 22.4 arranged in the rod sleeve 22.3 and providing the pressure rod 22.2 with an elastic force to extend forward, and a push rod 22.5, the top end of which is fixed to the pressure rod 22.2 and the bottom end of which extends from the bottom of the rod sleeve 22.3 and is used to be pushed backward by the pressing and shaping roller 3 to cause the pressure rod 22.2 to move backward.

[0047] The bottom of the rod sleeve 22.3 is provided with a through slot for the push rod 22.5 to move. In the initial state, the pressure rod 22.2, under the action of the rod spring 22.4, presses the workpiece against the rear side of the front baffle 20. As the pressing and shaping roller 3 returns to its initial position, it pushes the push rod 22.5 to move backward. At this time, the push rod 22.5 drives the pressure rod 22.2 backward, which in turn drives the pressure plate 22 backward to release the clamped workpiece. At this time, the workpiece located at the top of the drop gap 23 will fall into the drop gap 23. As the pressing and shaping roller 3 moves forward, the pressure rod 22.2 is released. Under the action of the rod spring 22.4, the pressure rod 22.2 will once again press the workpiece forward, so that the next workpiece is fixed above the drop gap 23, facilitating the feeding of the next workpiece when the pressing and shaping roller 3 returns.

[0048] Among them, in order to ensure that the workpiece on the upper surface of the conveyor belt 19 does not fall over when the pressure rod 22.2 moves backward, a top plate is provided between the top of the front baffle 20 and the rear baffle 21. The workpiece is placed between the front baffle 20 and the rear baffle 21 from the side. The workpiece is limited by the top belt surface and the top plate of the conveyor belt 19 through the top and bottom respectively, and can be kept in an upright state.

[0049] Furthermore, the top and bottom ends of the inner template 2 are rotatably connected to the inner wall of the cavity through the top rotating shaft 24 and the bottom rotating shaft respectively, and a ball 11 is fixedly provided on one of the rollers 6. A rolling groove 12 is provided on one side surface of the inner template 2. The half-pound of the ball 11 is larger than the half-pound of the roller 6, so that the surface of the ball 11 is convex relative to the roller 6. When the pressing and shaping roller 3 with the ball 11 presses the material, the ball 11 displaces in the rolling groove 12 and supports the inner template 2 to be stable in a horizontal state.

[0050] At this time, after the workpiece is shaped on the inner template 2, the workpiece can be detached from the inner template 2 by flipping the inner template 2 to a state facing the workpiece.

[0051] A spiral driving groove is provided on the surface of the top rotating shaft 24 , and a front straight groove 25 is formed at the front end of the spiral driving groove along the axial direction of the top rotating shaft 24 , and the front end of the front straight groove 25 is connected to the rolling groove 12 .

[0052] In an embodiment of the present invention, the dimensions of the pressing and shaping roller 3 and the roller shaft 6 are set so that when the pressing and shaping roller 3 is pressing the workpiece, the roller shaft 6 is in the pressing channel 4 and contacts the outer surface of the support portion 5, and the pressing and shaping roller 3 is located above the pressing channel 4. When the ball 11 moves to the front end of the straight groove 25 and the roller shaft 6 contacts the top of the outer surface of the support portion 5, a portion of the ball 11 has entered the rolling groove 12. When the ball 11 moves forward in the spiral drive groove, it drives the top rotating shaft 24 to rotate, and at this time, the top rotating shaft 24 drives the inner template 2 to flip to a horizontal state that can be used for shaping the workpiece. When the ball 11 moves backward in the spiral drive groove, the top rotating shaft 24 drives the inner template 2 to flip to a horizontal state with the shaped workpiece facing downward.

[0053] Furthermore, the diameter of the top rotating shaft 24 is larger than the thickness of the inner template 2, and an "L"-shaped groove is provided on the surface of the top rotating shaft 24. The inner side wall of the groove distributed radially along the top rotating shaft 24 is perpendicular to the inner side wall distributed axially along the top rotating shaft 24, and the inner side wall of the groove distributed axially along the top rotating shaft 24 is flush with the corresponding surface of the stripping part, and the inner side wall of the groove distributed radially along the top rotating shaft 24 is flush with the rear side boundary of the dropping gap 23.

[0054] At this time, when the workpiece falls from the drop gap 23, it will fall on the surface of the top rotating shaft 24, and when the workpiece falls, the inner template 2 is in a state with the upper surface facing downward, and the groove and the workpiece are respectively located at the bottom and top of the top rotation and are relatively distributed.

[0055] As the pressing and shaping roller 3 moves forward, the ball 11 moves forward within the spiral drive groove. At this point, the top shaft 24 rotates, and the upper surface of the inner mold plate 2 inverts upward. When the ball 11 enters the straight groove 25, the inner mold plate 2 flips to an upward-facing position, and the groove moves to the bottom of the workpiece. At this point, the bottom of the workpiece's rear side is restrained by the inner wall of the groove extending radially along the top shaft 24, while the bottom of the workpiece is supported by the inner wall of the groove extending axially along the top shaft 24. This improves the stability of the workpiece after it falls and prevents it from tilting.

[0056] In addition, in an embodiment of the present invention, when the inner template 2 is flipped to a state with the upper surface facing upward, the distance between the bottom of the front baffle 20 and the inner wall surface of the groove distributed axially along the top rotating shaft 24 in this state is not less than the width of the workpiece, and when the inner template 2 is flipped to a state with the upper surface facing upward, the distance between the bottom of the front baffle 20 and the surface of the top rotating shaft 24 is less than the width of the workpiece.

[0057] By making such a configuration, after the workpiece falls onto the top rotating shaft 24, the tops of its front and rear sides are respectively restrained by the front baffle 20 and the conveyor belt 19, thereby keeping the workpiece stable in an upright position. During the process of turning the inner template 2 so that the top surface faces upward, the bottom of the workpiece enters the groove and its top height does not exceed the bottom height of the front baffle 20.

[0058] The mold platform 1 is provided with throat-wide channels 14 on both sides corresponding to the throat, and side clamps 15 are provided on both sides below the mold platform 1, which can extend from the throat-wide channels 14 and squeeze the workpiece corresponding to the throat part.

[0059] The mold platform 1 is provided with handle tail transverse channels 16 on both sides corresponding to the handle tail end, and a cutting blade 17 is provided in the handle tail transverse channel 16 for cutting the two ends of the workpiece from both sides.

[0060] The side clamping block 15 and the cutting blade 17 on the same side are respectively installed at the two ends of the lateral displacement structure, and the two lateral displacement structures move synchronously relative to each other or move in opposite directions. When the pressing and shaping roller 3 passes through the throat, the lateral displacement structure 18 drives the side clamping block 15 and the cutting blade 17 to move toward the workpiece. Before the pressing and shaping roller 3 passes through the cutting blade 17, the side clamping block 15 is pressed on the workpiece. After the pressing and shaping roller 3 passes through the cutting blade 17, the cutting blade 17 cuts the workpiece.

[0061] Specifically, in the embodiment of the present invention, wide guide rails are provided corresponding to the throat transverse channel and the handle tail transverse channel 16. The side displacement structure 18 includes a displacement plate 18.1, a retreat chute 18.2 provided at one end of the displacement plate 18.1, a retreat slider 18.3 slidably provided in the retreat chute 18.2, a retreat spring 18.4 provided between the retreat chute 18.2 and the retreat slider 18.3, a side displacement screw sleeve 18.5 fixed to the bottom of the displacement plate 18.1, a side displacement screw rod 18.6 threadedly connected to the side displacement screw sleeve 18.5, a transmission gear 18.7 fixedly provided at the end of the side displacement screw rod 18.6, and a drive rack 18.8 fixedly provided at the end of the wide guide plate 7. Rollers 18.9 that move within the wide guide rails are provided at both ends of the displacement plate 18.1. A side clamping block 15 is fixed to the top of the retreat slider 18.3.

[0062] In the initial state, the side clamps 15 are located inwardly of the cutting blade in the width direction of the mold platform 1. The width guide rail includes straight and inclined sections distributed inwardly and outwardly. When the cutting blade and the side clamps 15 are at the outermost ends of the width guide rail, the height of the cutting blade and the side clamps does not exceed the upper surface of the mold platform 1.

[0063] Specifically, when drive rack 18.8 meshes with transmission gear 18.7, transmission gear 18.7 rotates. Transmission gear 18.7 drives the displacement screw, which in turn drives the displacement screw sleeve, via displacement plate 18.1, to move the cutting blade and side clamps 15 toward the inner mold plate 2. At this point, rollers 18.9 shift from the inclined section of the wide-width guide rail toward the straight section, causing the cutting blade and side clamps 15 to move above the mold platform 1. At this point, the cutting blade and side clamps 15 both cover the workpiece vertically, and so do the workpiece vertically.

[0064] When the side clamp 15 contacts the workpiece, the cutting tool has not yet contacted the workpiece surface. As the side displacement structure 18 continues to move, the retreat spring 18.4 is compressed, and the cutting tool continues to move toward the workpiece surface to achieve the purpose of cutting the workpiece.

[0065] During the return process of the nip and shaping roller 3, before it passes the cutting blade, the cutting blade is separated from the workpiece, providing space for the nip and shaping roller 3 to pass through the cutting blade. Before the nip and shaping roller 3 passes through the side clamping block 15, the side clamping block 15 is separated from the workpiece and does not provide space for the nip and shaping roller 3 to pass through the throat portion.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A frame pre-forming mold for racket processing, characterized in that: The invention comprises a mold platform (1), an inner template (2) and a material pressing and shaping roller (3), wherein: a cavity having a shape adapted to that of the inner template (2) is provided in the middle of the mold platform (1), the inner template (2) is installed in the cavity, the width of the cavity is greater than the width of the inner template (2), so that a material pressing channel (4) is formed between the side of the inner template (2) and the side wall of the cavity, two material pressing and shaping rollers (3) are provided and symmetrically distributed on both sides of the material pressing channel (4), and the material pressing and shaping rollers (3) bend the workpiece and fit it on the inner template (2) by moving back and forth along the material pressing channel (4) between the top and bottom of the inner template (2) to achieve shaping of the workpiece; The material pressing and shaping roller (3) is rotatably sleeved on the roller shaft (6), and the bottom end of the roller shaft (6) is slidably arranged on the wide guide plate (7). One end of the wide guide plate (7) is threadedly sleeved on the power screw (9) through a power screw sleeve (8), and one end of the power screw (9) is connected to the output shaft of the rotating motor (10). The power screw (9) controls the material pressing and shaping roller (3) to move back and forth between the top and bottom of the inner template (2) through forward and reverse rotation; the top and bottom ends of the inner template (2) are both rotatably connected to the inner side wall of the cavity. A ball (11) is fixedly provided on one of the roller shafts (6), and a rolling groove (12) is provided on one side surface of the inner template (2). When the material pressing and shaping roller (3) with the ball (11) presses the material, the ball (11) moves in the rolling groove (12) and supports the inner template (2) to be stable in a horizontal state; the top end of the roller shaft (6) passes through the material pressing and shaping roller (3) and is fixedly connected to an upper baffle (13); when the material pressing and shaping roller (3) moves in the material pressing channel (4), the upper baffle (13) moves on the upper surface of the inner template (2); The mold platform (1) is provided with throat-wide channels (14) on both sides corresponding to the throat, and side clamps (15) are provided on both sides below the mold platform (1) and can extend from the throat-wide channels (14) to squeeze the workpiece corresponding to the throat portion; the mold platform (1) is provided with handle-tail transverse channels (16) on both sides corresponding to the handle tail end, and a cutting blade (17) is provided in the handle-tail transverse channel (16) and can cut the two ends of the workpiece from both sides.

2. The racket frame pre-forming mold according to claim 1, characterized in that: A supporting portion (5) extends outward from the bottom end of the side surface of the inner template (2), and the distance the supporting portion extends outward is less than the thickness of the workpiece. When the workpiece is extruded and shaped on the surface of the inner template (2), the supporting portion (5) supports the bottom of the shaped workpiece.

3. The racket frame pre-forming mold according to claim 2, characterized in that: The side clamping block (15) and the cutting blade (17) located on the same side are respectively installed at the two ends of the side displacement structure (18), and the two side displacement structures (18) move synchronously relative to each other or move in opposite directions. When the pressing and shaping roller (3) passes through the throat, the side displacement structure (18) drives the side clamping block (15) and the cutting blade (17) to move toward the workpiece. Before the pressing and shaping roller (3) passes through the cutting blade (17), the side clamping block (15) is pressed on the workpiece. After the pressing and shaping roller (3) passes through the cutting blade (17), the cutting blade (17) cuts the workpiece.

4. The racket frame pre-forming die according to claim 3, characterized in that: The mold platform (1) is provided with a workpiece storage unit at a position corresponding to the top of the top, and the workpiece storage unit comprises a conveyor belt (19), a front baffle (20) and a rear baffle (21) arranged above the conveyor belt (19) and distributed in parallel in front and back, and a pressure plate (22) arranged on the rear baffle (21) for pressing the workpiece against the rear side of the front baffle (20), and a dropping gap (23) is formed between the front baffle (20) and the conveyor belt (19) for the workpiece to drop onto the mold platform (1).

5. The racket frame pre-forming die according to claim 4, characterized in that: The pressing plate (22) comprises a plate body (22.1) arranged between the front baffle (20) and the rear baffle (21), a pressing rod (22.2) passing through the rear baffle (21) and having its front end fixed to the pressing plate (22), a rod sleeve (22.3) having its front end fixed to the rear side of the rear baffle (21) and sleeved on the pressing rod (22.2), a rod spring (22.4) arranged in the rod sleeve (22.3) and providing elastic force for the pressing rod (22.2) to extend forward, and a push rod (22.5) having its top end fixed to the pressing rod (22.2) and its bottom end extending from the bottom of the rod sleeve (22.3) and used to be pushed backward by the material pressing and shaping roller (3) to cause the pressing rod (22.2) to move backward.

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