Composite material ball bat blank forming method

Abstract

This invention relates to a method for molding a composite bat blank, comprising manufacturing a metal bat body and a composite end cap for sealing the front end of the bat body; molding is achieved through the following steps: inserting the edge of the composite end cap into the front end of the bat body, while simultaneously embedding an inflatable bag inside the composite end cap; placing the assembled blank into a mold; the inflation port of the inflatable bag protruding from the outside of the mold and connected to an air pump; heating the mold, while simultaneously inflating it with the air pump to allow the inflatable bag inside the composite end cap to support the composite end cap; in this invention, the air pump inflating the inflatable bag inside the composite end cap to support the composite end cap ensures that the shape of the composite end cap meets the design requirements during the molding process.

Description

Technical Field

[0001] This invention relates to a method for molding composite material ball and rod preforms. Background Technology

[0002] Existing baseball bats require the use of composite materials to bond with metal materials in certain areas to improve bat properties. The existing method of bonding composite materials involves prefabricating sheet-like composite materials and then bonding them with metal bats, followed by thermoforming using a mold. During the bonding process, gas needs to be supplied to ensure that the outer wall of the composite material fits snugly against the inner cavity of the mold. In addition, the assembly before the mold is heated also needs to ensure the accuracy of the position and shape of the bonding process.

[0003] The existing molding process uses purely manual operation, which is inefficient and produces inconsistent quality. Deformation is prone to occur during the bonding process between composite materials and metal materials, and the final shape of the composite material often fails to meet the design requirements. Summary of the Invention

[0004] To address the issue that existing composite ball rods are prone to deformation during the bonding process between the composite material and the metal material in the molding process, the final shape of the composite material often fails to meet the design requirements.

[0005] The technical solution of the present invention is as follows: a method for molding a composite material ball and rod preform, characterized by comprising the following steps:

[0006] (1) Manufacturing metal striking rods and composite material end caps for sealing the front end of the striking rods;

[0007] (2) Insert the edge of the composite material end cap of the striking rod into the front end of the striking rod, and at the same time, put an air bag inside the composite material end cap. The air inlet of the air bag protrudes from the end handle of the striking rod.

[0008] (3) Place the composite material end cap and the impact rod body in the combined state in step (2) into the mold; the inflation port of the air bag protrudes from the outside of the mold and is connected to the air pump.

[0009] (4) The mold is placed in the heating environment and heated. At the same time, the air pump is used to inflate the air bag inside the composite material end cap to support the composite material end cap and ensure that the shape of the composite material end cap meets the requirements during the molding process.

[0010] (5) After heating for a period of time, contact the connection between the air bag and the air pump, and pull the air bag out from the handle at the tail of the baton.

[0011] Preferably, a composite material accessory assembly aid is used when the composite material end cap is assembled into the baton body;

[0012] The composite material accessory assembly auxiliary tool includes a frame and a slide rail set on the frame. A front clamp for holding the composite material end cap and a rear placement frame for fixing the striking rod are slidably fitted on the slide rail. An air nozzle fixing tube is set on the frame and can pass through the striking rod to fix the air bag.

[0013] The rear placement frame is slidably fitted with a fixed seat, the fixed seat has a vertically arranged fixed plate, and the fixed plate has a fixed groove for the striking rod to pass through; the rear placement frame is fixed and driven to move along the slide rail.

[0014] Preferably, the front clamp includes a slider that slides along a slide rail and a vertical mounting plate fixed to the slider. A pneumatic finger is fixed on the vertical mounting plate, and a clamping plate is fixed on each of the movable grippers of the pneumatic finger. The middle of the opposing ends of the clamping plates is concave.

[0015] Preferably, a limiting slider located on the front side of the rear placement rack and a pressing slider located on the rear side of the rear placement rack are slidably fitted on the slide rail. The lower part of the pressing slider and the limiting slider are fixedly connected by a connector. The distance between the pressing slider and the limiting slider is greater than the length of the rear placement rack. A pushing electric cylinder for pushing the rear placement rack to move is fixed on the pressing slider. The telescopic end of the pushing electric cylinder faces the fixed plate. The rear drive device drives the limiting slider and the pressing slider to move synchronously.

[0016] Preferably, a bushing is fixed in the fixing groove of the fixing plate, and the inner diameter of the bushing gradually decreases from one end of the front clamp to the rear placement rack side, forming a conical shape.

[0017] Preferably, the end of the air nozzle fixing tube facing the rear placement frame has an insertion hole, the end of the insertion hole facing away from the rear placement frame is tapered, the outer end of the insertion hole is threaded with an expansion sleeve, and the end of the expansion sleeve that extends into the insertion hole is provided with a petal-shaped clamping piece along the circumferential direction.

[0018] Preferably, the mold includes a base plate, a lower mold base disposed on the base plate, and an upper mold base corresponding to the lower mold base. The lower mold base includes a fixed mold fixedly connected to the base plate and a movable mold that slides with the base plate. The base plate and the movable mold have mutually cooperating sliding surfaces. The base plate and the movable mold are locked together by through bolts. The surfaces of the movable mold and the base plate facing each other have mutually cooperating grooves and protrusions.

[0019] Preferably, the slide has a mounting slot parallel to the slide, and the bolt passes through the mounting slot to fix the base plate and the movable mold. The movable mold and the fixed mold have multiple mold cavities. The outer end of the mold cavity of the movable mold is provided with a lower insert fixing groove. The lower insert fixing groove is arc-shaped and concave. The upper mold base corresponding to the movable mold is provided with an upper insert fixing groove symmetrically provided with a lower insert fixing groove.

[0020] Preferably, a limiting block is also fixed to the end of the base plate located on one side of the movable mold, and a limiting screw is threadedly connected to the middle of the limiting block.

[0021] Preferably, an insert is fixed in the insert fixing groove, and the insert includes a circular end cap embedded in the lower insert fixing groove and the upper insert fixing groove, and the inner end of the circular end cap extends to a top block for abutting against the profile.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) In this invention, the air pump inflates the air bag inside the composite material end cap to support the composite material end cap and ensure that the shape of the composite material end cap meets the design requirements during the molding process.

[0024] (2) The present invention uses a composite material accessory assembly auxiliary tool designed to achieve assembly by moving a metal striking rod fixed on the rear rack to the front clamp with the composite material end cap fixed. The drive structure enables precise control of the assembly process. In addition, the connection between the inflatable bag and the air nozzle fixing tube facilitates the traction and fixation of the inflatable bag.

[0025] (3) The present invention also designs an adjustable length mold for heating only the composite material part of the baseball bat body. The fixed mold is used to limit the grip part of the baseball bat. The middle part of the baseball bat does not need to be processed and does not need to be designed, thereby reducing the overall weight of the mold and improving the heat energy utilization rate. By adjusting the position of the movable mold, it is possible to adapt to the molding of baseball bats of different lengths, thereby reducing costs and improving efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is an enlarged schematic diagram of a portion of the fixing base of the present invention;

[0028] Figure 3 This is a schematic diagram of the front clamp structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the support plate structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the mating structure of the air nozzle fixing tube and the expansion sleeve in an embodiment of the present invention;

[0031] Figure 6 This is an exploded structural diagram of an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the combined state structure according to an embodiment of the present invention;

[0033] Figure 8 This is an embodiment of the present invention. Figure 1 Schematic diagram of a partial structure of the inlay;

[0034] Figure 9 This is a schematic diagram of the base plate structure according to an embodiment of the present invention;

[0035] In the diagram: 101-Composite material end cap, 102-Strike rod body, 103-Inflatable bag, 10-Frame, 110-Slide rail, 120-Limit slider, 130-Top pressure cylinder, 131-Push cylinder, 20-Front clamp, 210-Vertical mounting plate, 220-Pneumatic finger, 230-Clamping plate, 30-Fixed seat, 310-Fixed plate, 311-Fixed groove, 320-Support, 321-Vibrating component, 40-Nozzle fixing pipe, 410- Sliding plate, 420-support plate, 430-bolt, 50-bulb, 401-insertion hole, 440-expansion sleeve, 450-clamping plate, 60-base plate, 70-lower mold base, 80-upper mold base, 90-mounting slot, 710-fixed mold, 720-moving mold, 721-protrusion, 610-slide groove, 620-limiting block, 621-limiting screw, 630-handle, 910-lower insert fixing groove, 920-insert, 901-top block. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0037] This invention provides a method for molding composite material ball-and-stick preforms, the specific steps of which are as follows:

[0038] (1) Manufacturing metal striking rods and composite material end caps for sealing the front end of the striking rods;

[0039] (2) Insert the edge of the composite material end cap of the striking rod into the front end of the striking rod, and at the same time, put an air bag inside the composite material end cap. The air inlet of the air bag protrudes from the end handle of the striking rod.

[0040] (3) Place the composite material end cap and the impact rod body in the combined state in step (2) into the mold; the inflation port of the air bag protrudes from the outside of the mold and is connected to the air pump.

[0041] (4) The mold is placed in the heating environment and heated. At the same time, the air pump is used to inflate the air bag inside the composite material end cap to support the composite material end cap and ensure that the shape of the composite material end cap meets the requirements during the molding process.

[0042] (5) After heating for a period of time, contact the connection between the air bag and the air pump, and pull the air bag out from the handle at the tail of the baton.

[0043] In this invention, an air pump inflates the composite material end cap, causing the built-in air bag to support the composite material end cap and ensure that the shape of the composite material end cap meets the design requirements during the molding process.

[0044] To better fit the composite end cap 102 with the striking rod body 101, see [reference needed]. Figure 1-5 The present invention designs an auxiliary tool for assembling composite material accessories in step (2) to realize the assembly of inflatable bags, composite material end caps and striking rods. It includes a frame 10 and a slide rail 110 set on the frame. The slide rail 110 is slidably fitted with a front clamp 20 for clamping the composite material end cap 101 and a rear placement frame for fixing the striking rod. The frame 10 is provided with an air nozzle fixing tube 40 located on the rear placement frame that can penetrate the striking rod 102.

[0045] The rear placement rack is slidably fitted with a fixed seat 30, the fixed seat 30 having a vertically arranged fixed plate 310, and the fixed plate 310 having a fixed groove 311 for the striking rod to pass through; the rear placement rack is driven by a rear drive device to move along a slide rail.

[0046] In this embodiment, the front clamp 20 includes a slider that slides along a slide rail and a vertical mounting plate 210 fixed on the slider. A pneumatic finger 220 is fixed on the vertical mounting plate, and a clamping plate 230 is fixed on each of the movable grippers of the pneumatic finger. The middle of the opposing ends of the clamping plates 230 is concave.

[0047] During operation, in the initial state, the air nozzle fixing tube 40 passes through the fixing groove. The gripping part of the striking rod 102 is pre-loaded over the outside of the air nozzle fixing tube 40 and passes through the fixing groove 311 to be mounted on the rear placement frame. Generally, the opening cross-sectional area of ​​the gripping part of the striking rod 102 is larger than the cross-sectional area of ​​the air nozzle fixing tube 40, and the end of the air nozzle fixing tube 40 will exceed the front opening of the striking rod 102 and be exposed.

[0048] In this embodiment, the opening of the fixing groove 311 faces upward to facilitate the insertion of the striking rod 102.

[0049] Next, the cap-shaped composite material end cap 101 is placed into the air bag 103. The opening of the air bag is closed at one end facing the composite material end cap 10, and the other end has an opening. When the air bag is not inflated, the middle part is flat. The end with the opening is inserted into the air nozzle fixing tube 40 to expose one end of the striking rod 102.

[0050] Next, the composite material end cap 101 is clamped between the clamping plates 230. The inward concave arc shape of the middle of the clamping plates can effectively hold the composite material end cap 101. The position of the clamping plates 230 holding the composite material end cap 101 is directly aligned with the position of the fixing groove, thereby ensuring that during the movement of the rear placement frame, the striking rod 102 on the rear placement frame gradually approaches the composite material end cap 10 for engagement. At the same time, as the striking rod 102 moves, the air nozzle fixing tube 40 and the port of the air bag 103 are exposed from the opening of the tail handle of the striking rod 102.

[0051] Then, the rear drive device is used to drive the rear placement frame to move the striking rod 102 toward the composite material end cap 101 to achieve engagement.

[0052] In one embodiment of the present invention, a limiting slider 120 located on the front side of the rear rack and a pressing slider 130 located on the rear side of the rear rack are slidably fitted on the slide rail 110. The lower part of the pressing slider and the limiting slider are fixedly connected by a connector. The distance between the pressing slider and the limiting slider is greater than the length of the rear rack. A pushing electric cylinder 131 for pushing the rear rack to move is fixed on the pressing slider 130. The telescopic end of the pushing electric cylinder faces the fixed plate. The rear drive device drives the limiting slider and the pressing slider to move synchronously.

[0053] During operation, the lower part of the limiting slider 120 and the top pressing slider 130 are fixedly connected, and the rear placement frame is located between the limiting slider 120 and the top pressing slider 130. During the process of the limiting slider 120 and the top pressing slider 130 moving toward the composite material end cover 101, the top pushing electric cylinder 131 on the top pressing slider 130 pushes the vertical mounting plate 210 to move, and there is a gap between the fixed seat 30 and the limiting slider 120.

[0054] The limiting slider 120 and the top-pressing slider 130 move synchronously under the drive of the rear drive device. When the composite material end cap 101 enters the opening at the end of the striking rod 102 towards the edge of the striking rod 102, the rear placement frame is pushed to move by the top-push electric cylinder 131. The range of movement of the rear placement frame is in the area between the limiting slider 120 and the top-pressing slider 130, gradually reducing the distance between the fixed seat 30 and the limiting slider 120. Therefore, the entry amount of the composite material end cap 101 and the striking rod 102 can be controlled more precisely.

[0055] In practice, position marks can be made on the composite material end cap 101 to ensure the accurate alignment of the composite material end cap 101 with the striking rod 102.

[0056] In this embodiment, the rear drive device is a screw and nut structure. The screw connected to the limit slider 120 by threads rotates, thereby driving the limit slider 120 and the top pressure slider 130 to move synchronously.

[0057] In the actual design, the rear drive device in the listed embodiment can also use an electric cylinder, pneumatic cylinder or hydraulic cylinder mechanism to drive the displacement of the limit slider 120.

[0058] After completing one operation, the pneumatic finger releases the composite material end cap, and the rear drive device drives the limit slider 120 to retract while simultaneously moving the fixing seat 30 backward. Then, holding the striking rod 102, the air bag 103 is removed from the air nozzle fixing tube 40, and the assembled striking rod 102 can be removed from the upper part of the fixing groove 311.

[0059] In one embodiment of the present invention, based on the characteristics of the bat shape, the diameter of the bat body 102 gradually decreases from the front end to the handle grip at the rear end. In order to better fix the bat body 102, the fixing plate can drive the bat body 102 to move when it moves forward. A bushing 50 is fixed in the fixing groove of the fixing plate. The inner diameter of the bushing gradually decreases from one end of the front clamp to the rear placement frame side, forming a conical shape.

[0060] When the fixing plate retracts, the striking rod 102 is released from the fixing groove 311 while it is being held, and the striking rod can be removed from the top of the fixing groove 311.

[0061] In order to better support the striking rod 102, a support 320 is fixed to the front side of the fixing plate, and the upper surface of the support 320 is arc-shaped. When the striking rod 102 is inserted into the fixing groove 311 of the fixing plate 310, the front part rests on the upper surface of the support 320.

[0062] In this embodiment, a sliding plate 410 that slides with a slide rail is fixed on the rear side of the frame. A support plate 420 is fixed on the sliding plate. The air nozzle fixing tube is fixed in the middle of the support plate. A vertical locking bolt 430 is fixed on the sliding plate. The support plate 420 is used to fix the air nozzle fixing tube 40. The end of the air nozzle fixing tube 40 facing the rear frame has an insertion hole for inserting the air bag 103 on the open side during operation.

[0063] In one embodiment of the present invention, a front side plate 241 is fixed on the frame at the front side of the front clamp. The front side plate is threadedly connected to a screw 240, which is connected to a vertical mounting plate 230 via a bearing. The position of the composite material end cap 101 is adjusted by moving the vertical mounting plate 230 through the screw and nut structure. Generally, the position of the vertical mounting plate 230 is determined before operation and does not require adjustment during operation.

[0064] The end of the air nozzle fixing tube facing the rear placement frame has an insertion hole 401. The end of the insertion hole facing away from the rear placement frame is tapered. An expansion sleeve 440 is threaded to the outer end of the insertion hole. The end of the expansion sleeve that extends into the insertion hole is provided with a petal-shaped clamping piece 450 along the circumferential direction. The adjacent petal-shaped clamping pieces 450 have a gap in the initial state.

[0065] During operation, the opening of the air bag 103 is inserted into the expansion sleeve 440, and the opening of the air bag 103 extends out of the clamping piece 450. Then, the expansion sleeve is screwed into the insertion hole. As the expansion sleeve 440 extends into the flap-shaped clamping piece 450, the flap-shaped insertion hole closes and clamps the opening of the air bag, thus fixing the air bag.

[0066] See Figure 6-9 Since the molding process only involves the composite material end cap 102 area, the present invention designs a mold for curing an adjustable length area for the molding of the composite baseball. The mold includes a base plate 60, a lower mold base 70 disposed on the base plate 60, and an upper mold base 80 corresponding to the lower mold base 70. The lower mold base 70 includes a fixed mold 710 fixedly connected to the base plate and a movable mold 720 slidingly engaged with the base plate. The base plate 60 and the movable mold 720 have mutually engaging sliding surfaces. The base plate and the movable mold are locked together by through bolts.

[0067] In this embodiment, the movable mold and the base plate facing each other have a sliding groove 610 and a protrusion 721 that cooperate with each other.

[0068] The groove 610 is set on the base plate and is located at the lower part of the movable mold 720 along with the protrusion 721. There are two or more protrusions 721 and groove 610 in the cooperative structure design, which can be designed according to the width of the base plate and the number of mold cavities.

[0069] In this embodiment, the slide has a mounting slot 90 parallel to the slide. The mounting slot 90 is located on both sides of the slide 610. The movable mold 720 is locked by bolts that pass through the mounting slot 90 and are threaded to the movable mold 720.

[0070] When sliding is required, the bolts are loosened to allow the movable mold 720 to move. Once it reaches the desired position, the bolts are tightened to fix the movable mold 720.

[0071] The composite material to be formed is then placed into the cavity of the lower mold base. In this embodiment, only the movable mold 720 needs to be designed in the area where the composite material end cap 102 is formed, while the fixed mold 710 is used to limit the gripping part of the baseball bat. The middle part of the baseball bat does not need to be processed or designed with a mold, thereby reducing the overall weight of the mold and improving the thermal energy utilization rate.

[0072] In addition, by adjusting the position of the movable mold, it is possible to adapt to the molding of baseball bats of different lengths, thereby reducing costs and improving efficiency.

[0073] The assembled mold is placed in a hot pressing environment for heating to thermoform the composite material.

[0074] In one embodiment of the present invention, the lower mold base and the upper mold base are connected by guide rods at both ends that extend into the upper mold base and the lower mold base respectively.

[0075] In one embodiment of the present invention, a limiting block 620 is also fixed to the end of the base plate located on one side of the movable mold, and a limiting screw 621 is threadedly connected to the middle of the limiting block. The limiting screw 621 can abut against the outer end of the movable mold 720 for auxiliary fixation, thereby improving the stability of the movable mold during the molding process.

[0076] In one embodiment of the present invention, handles 630 are fixed at both ends of the base plate to facilitate the operator to lift the base plate and the mold for handling.

[0077] In one embodiment of the present invention, the movable mold and the fixed mold have multiple mold cavities corresponding to each other, which can simultaneously form multiple workpieces. The outer end of the mold cavity of the movable mold is provided with a lower insert fixing groove 910, which is arc-shaped and concave. The upper mold base corresponding to the movable mold is provided with an upper insert fixing groove symmetrically located in the lower insert fixing groove.

[0078] An insert 920 is fixed in the insert fixing groove. The insert includes a circular end cap that is embedded in the lower insert fixing groove 910 and the upper insert fixing groove. The inner end of the circular end cap extends a top block 901 for abutting against the composite material end cap.

[0079] In this embodiment, the insert 920 is designed to abut against the end of the profile after the workpiece to be processed is placed in, and the top block 901 extends into the middle of the composite material to ensure the stability of the end face or inner surface of the composite material. The size and protrusion of the insert 920 can be designed according to the specific product model.

[0080] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for molding a composite material ball-and-stick preform, characterized in that, Includes the following steps: (1) Manufacturing metal striking rods and composite material end caps for sealing the front end of the striking rods; (2) Insert the edge of the composite material end cap of the striking rod into the front end of the striking rod, and at the same time, put an air bag inside the composite material end cap. The air inlet of the air bag protrudes from the end handle of the striking rod. (3) Place the composite end cap and the impact rod body in the combined state in step (2) into the mold; the inflation port of the air bag protrudes from the outside of the mold and is connected to the air pump; (4) Place the mold in the heating environment and heat it. At the same time, use an air pump to inflate the air bag inside the composite material end cap to support the composite material end cap and ensure that the shape of the composite material end cap meets the requirements during the molding process. (5) After heating for a period of time, disconnect the air bag from the air pump and pull the air bag out from the handle at the tail of the striking rod. The composite material end cap is assembled into the baton body using a composite material accessory assembly aid; The composite material accessory assembly auxiliary tool includes a frame and a slide rail set on the frame. A front clamp for holding the composite material end cap and a rear placement frame for fixing the striking rod are slidably fitted on the slide rail. An air nozzle fixing tube is set on the frame and can pass through the striking rod to fix the air bag. The rear mounting frame is slidably fitted with a fixed seat, the fixed seat has a vertically arranged fixed plate, and the fixed plate has a fixed groove for the striking rod to pass through; the rear mounting frame is fixed and driven to move along a slide rail; the front clamp includes a slider slidably fitted with the slide rail and a vertical mounting plate fixed on the slider, a pneumatic finger is fixed on the vertical mounting plate, and a clamping plate is fixed on each of the movable grippers of the pneumatic finger, the middle of the opposite ends of the clamping plates being concave; A limiting slider located on the front side of the rear placement rack and a pressing slider located on the rear side of the rear placement rack are slidably fitted on the slide rail. The lower part of the pressing slider and the limiting slider are fixedly connected by a connector. The distance between the pressing slider and the limiting slider is greater than the length of the rear placement rack. A pushing electric cylinder for pushing the rear placement rack to move is fixed on the pressing slider. The telescopic end of the pushing electric cylinder faces the fixed plate. The rear drive device drives the limiting slider and the pressing slider to move synchronously.

2. The method for forming a composite material ball-and-stick preform according to claim 1, characterized in that, A bushing is fixed in the fixing groove of the fixing plate. The inner diameter of the bushing gradually decreases from one end of the front clamp to the side of the rear placement rack, forming a conical shape.

3. The method for molding a composite material ball-and-stick preform according to claim 1, characterized in that, The end of the air nozzle fixing tube facing the rear placement frame has an insertion hole. The end of the insertion hole facing away from the rear placement frame is tapered. An expansion sleeve is threaded to the outer end of the insertion hole. The end of the expansion sleeve that extends into the insertion hole is provided with a petal-shaped clamping piece along the circumferential direction.

4. The method for forming a composite material ball-and-stick preform according to claim 1, characterized in that, The mold includes a base plate, a lower mold base disposed on the base plate, and an upper mold base corresponding to the lower mold base. The lower mold base includes a fixed mold fixedly connected to the base plate and a movable mold that slides with the base plate. The base plate and the movable mold have mutually cooperating sliding surfaces. The base plate and the movable mold are locked together by through bolts. The surfaces of the movable mold and the base plate facing each other have mutually cooperating grooves and protrusions.

5. The method for forming a composite material ball-and-stick preform according to claim 4, characterized in that, The slide has a mounting slot parallel to the slide, and the bolt passes through the mounting slot to fix the base plate and the movable mold. The movable mold and the fixed mold have multiple mold cavities. The outer end of the mold cavity of the movable mold is provided with a lower insert fixing groove. The lower insert fixing groove is arc-shaped and concave. The upper mold base corresponding to the movable mold is provided with an upper insert fixing groove symmetrically provided with a lower insert fixing groove.

6. The method for forming a composite material ball-and-stick preform according to claim 5, characterized in that, A limit block is also fixed to the end of the base plate located on one side of the movable mold, and a limit screw is threadedly connected to the middle of the limit block.

7. A method for forming a composite material ball-and-stick preform according to claim 5, characterized in that, An insert is fixed in the insert fixing groove. The insert includes a circular end cap that is embedded in the lower insert fixing groove and the upper insert fixing groove. The inner end of the circular end cap extends to a top block for abutting against the profile.

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