Forming method for spiral composite material, and forming control system

Abstract

The present invention relates to a forming method for a spiral composite material, and a forming control system. The forming method comprises: 1) preparing a pre-forming assembly and a forming assembly, wherein the forming assembly comprises a mandrel, a spiral groove for winding an impregnated fiber is provided on an outer wall of the mandrel along the length thereof, and the spiral groove comprises a limiting groove and a shaping groove, the groove bottom of the limiting groove being in communication with the shaping groove, and the groove width of the limiting groove being smaller than the groove width of the shaping groove; 2) connecting a plurality of fibers to a traction rope, and pulling the traction rope to draw the plurality of fibers into a fiber impregnator for bundling; and 3) winding the traction rope in the shaping groove of the spiral groove of the mandrel, passing same through a replacement port and connecting same to a demolding mechanism, wherein the traction rope drives a pre-formed fiber bundle into the shaping groove; and the demolding mechanism rotates to drag the traction rope to demold a spiral composite material and to draw a second section of pre-formed fiber bundle into the shaping groove for curing and forming. By means of the design, the technical problem of the high difficulty of manufacturing an existing male mold provided with spiral grooves with different cross sections is solved.

Description

A spiral composite material forming method and forming control system Technical Field

[0001] The present invention relates to the field of spiral composite material forming method control, in particular to a spiral composite material forming method and a forming control system. Background Art

[0002] The pultrusion process originated in the United States in 1948 and reached maturity in the late 1950s. This process boasts a high degree of automation and high efficiency. It eliminates scrap and generally requires no post-processing, saving labor, materials, and energy. It is ideal for producing I-shaped, channel-shaped, square, and round profiles with defined cross-sectional shapes. The resulting products offer consistent quality and repeatability, and can be cut to any length.

[0003] Patent CN202310272126.3 discloses a composite material spiral component forming system and patent CN202310272128.2 discloses a composite material spiral component preparation method and forming control system. They have continuous production capabilities and realize the continuous production of composite material spiral components. They have the advantages of high degree of mechanization, high production efficiency, stable product performance, and diverse product spatial configuration and cross-sectional configuration. However, the cross-sectional configuration of the spiral products produced by the above patents is single. If you want to produce products with different cross-sectional configurations, you need to re-make a positive mold with a spiral groove of the corresponding configuration. However, opening spiral grooves with different cross-sections on the positive mold is difficult to produce and the cost is high.

[0004] Therefore, in order to solve the above problems, the present invention urgently needs to provide a spiral composite material forming method and a forming control system.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide a spiral composite material forming method and forming control system, which solves the problem of complex integrated production process of composite spiral products, has the advantages of high degree of automation, labor saving, stable product performance, and diverse product spatial configuration and cross-sectional configuration.

[0007] The present invention provides a spiral composite material forming method, comprising the following steps:

[0008] 1) preparing a preformed component and a formed component, wherein the preformed component includes: a heating cylinder, the heating cylinder having a through hole extending transversely therethrough, and a heating plate disposed within the heating cylinder;

[0009] The molding assembly includes: a core mold, an outer wall of the core mold is provided with a spiral groove for winding the impregnated fiber along its length, the spiral groove includes a limiting groove and a shaping groove, the bottom of the limiting groove is connected to the shaping groove, and the groove width of the limiting groove is smaller than the groove width of the shaping groove; it also includes a shaper matching the spiral groove, the shaper includes a shaping block matching the shaping groove and a connecting rod that can pass through the limiting groove, and replacement ports for replacing the shaper are provided at both ends of the core mold; one end of the connecting rod is detachably connected to the shaping block, and the other end is connected to a driving rotation mechanism outside the core mold through a connecting piece, and the shaping block is also provided with a fiber perforation that passes through the shaping block; a heating plate is provided in the core mold;

[0010] 2) connecting a plurality of fibers to a traction rope, pulling the traction rope to pull the plurality of fibers into a fiber impregnator for bundling, and simultaneously impregnating the fibers in the fiber impregnator to obtain an impregnated fiber bundle, and pulling the impregnated fiber bundle into a preforming assembly for preforming to obtain a preformed fiber bundle;

[0011] 3) Wrap the traction rope around the shaping groove of the spiral groove of the core mold, pass it through the replacement port and connect it to the demolding mechanism, the traction rope drives the preformed fiber bundle into the shaping groove; the impregnated fiber bundle connected to the preformed fiber bundle enters the preforming assembly to form the second section of the preformed fiber bundle, the core mold heats and cures the preformed fiber bundle wound in the shaping groove in the spiral groove to form a spiral composite material; the demolding mechanism rotates and pulls the traction rope to demold the spiral composite material, and pulls the second section of the preformed fiber bundle connected to the spiral composite material into the shaping groove for curing and forming.

[0012] Preferably, the driving rotation mechanism includes a moving platform and a rotating ring that can be covered with the core mold, the moving platform is provided with an arc groove for fixing the rotating ring, and a ball is provided in the arc groove along the arc direction;

[0013] One side of the rotating ring is provided with a protrusion extending toward the side end, and one side of the protrusion is connected to a gear ring coaxially arranged with the rotating ring. It also includes a rotating motor installed on the movable platform, and a gear meshing with the teeth of the gear ring is sleeved on the rotating shaft of the rotating motor; it also includes a fixed platform arranged at the bottom of the movable platform, and a smooth flat groove is provided on the top of the fixed platform for accommodating the movement of the movable platform.

[0014] Preferably, both ends of the connecting rod are provided with external threads, the connecting piece and the shaping block are respectively provided with thread grooves matching the external threads, and the connecting piece and the shaping block are respectively detachably connected to the connecting rod via the thread grooves and the external threads.

[0015] Preferably, the demoulding mechanism includes a linear motion unit and a fixed column fixed on the movable plate of the linear motion unit, a drive motor is installed on the fixed column, the rotating shaft of the drive motor is connected to the turntable through a shaft sleeve, and a traction rope fixing ring is fixed on the turntable.

[0016] Preferably, the fiber impregnator includes a base, a placement groove is provided on the top of the base, a fiber bundler is placed in the placement groove, a fixed ring is provided directly above the fiber bundler, the bottom of the fixed ring is connected to the base through a support frame, a glue box is provided on the top of the fixed ring, a conical liquid outlet is provided at the bottom of the glue box, a control valve is installed on the conical liquid outlet, and the conical liquid outlet at the bottom of the glue box passes through the center of the fixed ring and is connected to the fiber bundler.

[0017] Preferably, the fiber bundler includes a long cylinder, one end of the long cylinder is a fiber migration end, and the other end is a fiber migration end. A hollow chamber is provided in the long cylinder, and the inner diameter of the hollow chamber gradually decreases from the fiber migration end to the fiber migration end. The fiber migration end is provided with a fiber migration inlet connected to the hollow chamber, and the fiber migration end is provided with a fiber migration outlet connected to the hollow chamber. The diameter of the fiber migration inlet is larger than the diameter of the fiber migration outlet of the long cylinder. An impregnation port is provided on the outer wall of the long cylinder, and the impregnation port is connected to the hollow chamber, and the impregnation port is connected to the conical liquid outlet.

[0018] Preferably, the fiber outlet of the fiber bundler is connected to the heating cylinder of the preform assembly through a connecting cylinder, and reverse external threads are provided at both ends of the connecting cylinder. The perforations of the heating cylinder and the fiber outlet of the fiber bundler are respectively provided with reverse internal threads matching the external threads, and the heating cylinder and the fiber outlet are connected to the connecting cylinder through external threads and internal threads respectively.

[0019] Preferably, the heating cylinder is fixed to the ground through a bracket, and the core mold is fixed to the ground through a bracket.

[0020] The present invention also provides a forming control system based on the spiral composite material forming method, comprising

[0021] The driving rotation mechanism is used to make the rotating circle rotate around the axis of the core mold, thereby driving the shaping block to move forward in the shaping groove;

[0022] The demoulding mechanism is used to pull the traction rope to demould the spiral composite material, and to pull the second section of preformed fiber bundle connected to the spiral composite material into the shaping tank for solidification and molding;

[0023] The temperature control mechanism is used to connect with the heating plate to control the temperature of the heating plate so that the impregnated fiber bundle wound in the spiral groove of the core mold is cured and formed;

[0024] Preferably, it also includes a control mechanism for setting the rotation speed of the rotating ring, the rotation speed of the demoulding mechanism turntable and the heating temperature of the temperature control mechanism, and sending control instructions to the driving rotation mechanism, the demoulding mechanism and the temperature control unit respectively.

[0025] The spiral composite material forming method and forming control system provided by the present invention have the following improvements compared with the prior art: BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] FIG1 is a step diagram of the spiral composite material forming method according to the present invention;

[0028] FIG2 is a schematic structural diagram (stereoscopic view) of the continuous production device for spiral composite materials according to the present invention;

[0029] FIG3 is a schematic diagram (perspective view) of the assembly structure of the molding assembly and the driving rotation unit of the present invention;

[0030] FIG4 is a schematic structural diagram (stereoscopic view) of the male mold of the present invention;

[0031] FIG5 is a schematic diagram (sectional view) of the male mold structure of the present invention;

[0032] FIG6 is a schematic diagram (stereoscopic view) of the structure of the shaping block of the present invention;

[0033] FIG7 is a schematic structural diagram (sectional view) of the fiber impregnation device of the present invention;

[0034] FIG8 is a diagram of a control system for forming a composite spiral member according to the present invention.

[0035] Explanation of the accompanying drawings: 1. Preforming component; 11. Heating cylinder; 12. Perforation; 21. Core mold; 211. Limiting groove; 212. Shaping groove; 213. Replacement port; 22. Shaper; 221. Shaping block; 222. Connecting rod; 3. Fiber impregnation device; 31. Base; 32. Fixed ring; 33. Glue tank; 34. Conical liquid outlet; 4. Demolding mechanism; 41. Linear motion unit; 42. Fixed column; 43. Turntable; 44. Traction rope fixing ring; 5. Driving rotation mechanism; 51. Moving platform; 511. Arc groove; 512. Ball; 52. Rotating ring; 53. Gear ring; 54. Gear; 55. Fixed platform; 7. Fiber bundler; 71. Fiber transfer inlet; 72. Fiber transfer outlet; 73. Impregnation port; 8. Connecting cylinder. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] The present invention provides a spiral composite material forming method, comprising the following steps:

[0040] 1) preparing a preforming component 1 and a forming component, wherein the preforming component 1 comprises: a heating cylinder 11, the heating cylinder 11 having a through hole 12 extending transversely therethrough, and a heating plate disposed within the heating cylinder 11;

[0041] The molding assembly includes: a core mold 21, an outer wall of the core mold 21 is provided with a spiral groove for winding the impregnated fiber along its length, the spiral groove includes a limiting groove 211 and a shaping groove 212, the bottom of the limiting groove 211 is connected to the shaping groove 212, and the groove width of the limiting groove 211 is smaller than the groove width of the shaping groove 212; it also includes a shaper 22 matching the spiral groove, the shaper 22 includes a shaping block 221 matching the shaping groove 212 and a connecting rod 222 that can pass through the limiting groove 211, and a replacement port 213 for replacing the shaper 22 is provided at both ends of the core mold 21; one end of the connecting rod 222 is detachably connected to the shaping block 221, and the other end is connected to the driving rotation mechanism 5 outermost of the core mold 21 through a connecting piece, and the shaping block 221 is also provided with a fiber perforation that passes through the shaping block 221; a heating plate is provided in the core mold 21;

[0042] 2) connecting a plurality of fibers to a traction rope, pulling the traction rope to pull the plurality of fibers into a fiber impregnator (3) for bundling, and simultaneously impregnating the fibers in the fiber impregnator 3 to obtain an impregnated fiber bundle, and pulling the impregnated fiber bundle into a preforming assembly for preforming to obtain a preformed fiber bundle;

[0043] 3) Wrap the traction rope around the shaping groove 212 of the spiral groove of the core mold 21, and pass through the replacement port 213 to connect with the demolding mechanism 4. The traction rope drives the preformed fiber bundle into the shaping groove 212. The impregnated fiber bundle connected to the preformed fiber bundle enters the preformed component 1 to form a second section of the preformed fiber bundle. The core mold 21 heats and solidifies the preformed fiber bundle wound in the shaping groove 212 in the spiral groove to form a spiral composite material. The demolding mechanism 4 rotates and pulls the traction rope to demold the spiral composite material, and pulls the second section of the preformed fiber bundle connected to the spiral composite material into the shaping groove 212 for solidification and molding.

[0044] Through the above design, the present invention connects the traction rope with the reinforcing material such as fiber or fabric, and uses the traction rope to pull the fiber bundle into the fiber impregnator 3, completes the impregnation and removal of glue through the fiber impregnator 3, and then completes the preforming in 2 seconds in the preforming component. At this time, the cross-sectional shape of the fiber is not formed, and then it enters the shaping groove 212 and the shaping block 221 inside the core mold 21. The shaping and curing are completed during the process of the shaping block 221 running from one end of the core mold 21 along the spiral groove to the other end of the core mold 21. At this time, the cross-sectional shape of the fiber has been formed, and then it is removed by demolding. The mold mechanism 4 is demoulded. During the demoulding process, the preformed impregnated fiber bundle connected to the solidified spiral composite material is synchronously wound in the shaping groove 221. Then the shaping block 221 repeatedly moves from one end of the core mold 21 along the spiral groove to the other end of the core mold 21 to start the next cycle. This cycle is repeated to achieve continuous production of spiral composite materials. This solution has obvious advantages such as high production efficiency, green environmental protection, and ease of engineering promotion. In addition, when the shaping block 221 shapes the impregnated fiber bundle, it also pulls and squeezes the fiber bundle, applying a certain amount of prestress. This prestress improves the stiffness of the composite product itself, enhances the fatigue performance of the composite product during service, effectively slows down the appearance of cracks on the surface and inside of the product, improves the vibration and elastic deformation of the product, and greatly improves the elastic strength, elastic modulus and the ability of the spiral composite material to resist deformation.

[0045] The driving rotation mechanism 5 of the present invention includes a movable platform 51 and a rotating ring 52 that can be covered with a core mold 21. The movable platform 51 is provided with an arc groove 511 for fixing the rotating ring 52, and a ball 512 is provided in the arc groove 511 along the arc direction; a protrusion extending toward the side end is provided on one side of the rotating ring 52, and a gear ring 53 coaxially arranged with the rotating ring 52 is connected to one side of the protrusion. It also includes a rotating motor installed on the movable platform 51, and a gear 54 meshing with the teeth of the gear ring 53 is sleeved on the rotating shaft of the rotating motor; it also includes a fixed platform 55 arranged at the bottom of the movable platform 51, and a smooth flat groove is provided on the top of the fixed platform 55 to accommodate the movement of the movable platform 51.

[0046] Through the above-mentioned design, the present invention utilizes the driving rotating mechanism 5 to enable the shaping block 221 to move in the shaping groove 212, and the rotating motor drives the gear 54 and the gear ring 53 to engage and rotate, and the gear ring 53 drives the rotating ring 52 to rotate, and the rotating ring 52 drives the shaping block 221 to advance spirally in the shaping groove 221 of the spiral groove. Since the shaping block 221 is connected to the rotating ring 52 by a connecting piece and a connecting rod 222, during the spiral advancement of the shaping block 221, the rotating ring 52 rotates with the core mold 21 as the center and advances along the length direction of the core mold 21. By changing the forward or reverse rotation of the rotating motor, the movement direction of the rotating ring 52 and the shaping block 221 can be changed.

[0047] The connecting rod 222 of the present invention is provided with external threads at both ends, and the connecting piece and the shaping block 221 are respectively provided with thread grooves matching the external threads. The connecting piece and the shaping block 221 are detachably connected to the connecting rod 222 through the thread grooves and external threads respectively.

[0048] The present invention adopts the above-mentioned design and combines the replacement port 213 of the core mold 21 to replace the shaping block 221 with fiber perforations of different shapes, thereby manufacturing spiral composite material components with different cross-sectional shapes.

[0049] The demoulding mechanism 4 of the present invention includes a linear motion unit 41 and a fixed column 42 fixed on the movable plate of the linear motion unit 41. A driving motor is installed on the fixed column 42. The rotating shaft of the driving motor is connected to the turntable 43 through a shaft sleeve. A traction rope fixing ring 44 is fixed on the turntable 43.

[0050] Through the above-mentioned design, the present invention connects the traction rope to the traction rope fixing ring 44, and the turntable 43 rotates along the spiral direction of the spiral groove and moves with the linear motion unit 41 in the direction away from the core mold 21, so as to complete the demoulding. In this process, the preformed impregnated fiber bundle connected to the cured spiral composite material will be synchronously wound in the shaping groove 221 for the next production.

[0051] The fiber impregnator 3 of the present invention includes a base 31, a placement groove is provided on the top of the base 31, a fiber bundler 7 is placed in the placement groove, a fixed ring 32 is provided directly above the fiber bundler 7, the bottom of the fixed ring 32 is connected to the base 31 through a support frame, a glue box 33 is provided on the top of the fixed ring 32, a conical liquid outlet 34 is provided at the bottom of the glue box 33, a control valve is installed on the conical liquid outlet 34, and the conical liquid outlet 34 at the bottom of the glue box 33 passes through the center of the fixed ring 32 and is connected to the fiber bundler 7.

[0052] Through the above design, the present invention sets the glue box 33 vertically to the fiber bundler 7 to save working space. The resin glue in the glue box 23 continuously flows into the fiber bundler 7 under the influence of gravity, and a control valve is installed on the conical liquid outlet 34 to adjust the flow rate of the resin glue.

[0053] The fiber bundler 7 of the present invention includes a long cylinder, one end of the long cylinder is a fiber migration end, and the other end is a fiber migration end. A hollow chamber is provided in the long cylinder, and the inner diameter of the hollow chamber gradually decreases from the fiber migration end to the fiber migration end. The fiber migration end is provided with a fiber migration inlet 71 connected to the hollow chamber, and the fiber migration end is provided with a fiber migration outlet 72 connected to the hollow chamber. The diameter of the fiber migration inlet 71 is larger than the diameter of the long cylinder fiber migration outlet 72. The outer wall of the long cylinder is provided with an immersion port 73, which is connected to the hollow chamber, and the immersion port 73 is connected to the conical liquid outlet 34.

[0054] Through the above-mentioned design, the present invention has a larger diameter of the fiber inlet 71 than the diameter of the long-tube fiber inlet 72, and the fibers at the fiber inlet 71 are always moving toward the preformed component 1, which will bring the resin glue that tends to flow outward into the fiber bundler 7, thereby preventing the resin glue from dripping onto the outside of the fiber bundler 7 and polluting the working environment.

[0055] The fiber outlet 72 of the fiber bundler 7 of the present invention is connected to the heating cylinder 11 of the preform assembly 1 through a connecting cylinder 8. Reverse external threads are provided at both ends of the connecting cylinder 8. The perforation 12 of the heating cylinder 11 and the fiber outlet 72 of the fiber bundler 7 are respectively provided with reverse internal threads matching the external threads. The heating cylinder 11 and the fiber outlet 72 are connected to the connecting cylinder 8 through external threads and internal threads respectively.

[0056] The present invention adopts the above-mentioned design, and utilizes the connecting tube 8 to connect the fiber bundler 7 and the heating tube 11, thereby preventing the glue from dripping and polluting the working environment, and also facilitating the subsequent cleaning work.

[0057] The heating tube 11 of the present invention is fixed to the ground via a bracket, and the core mold 21 is fixed to the ground via a bracket.

[0058] The cross-sectional shape of the fiber perforation of the present invention is one of circular, rectangular or polygonal.

[0059] Through the above-mentioned design, the present invention can produce spiral composite materials with different cross sections by replacing the shaping blocks 221 with different fiber perforations.

[0060] The present invention also provides a forming control system based on the spiral composite material forming method, comprising

[0061] The driving rotation mechanism 5 is used to make the rotating ring 52 rotate around the axis of the core mold 21, thereby driving the shaping block 221 to move forward in the shaping groove 212;

[0062] The demoulding mechanism 4 is used to pull the traction rope to demould the spiral composite material, and to pull the second section of preformed fiber bundle connected to the spiral composite material into the shaping tank 212 for curing and molding;

[0063] The temperature control mechanism is used to connect with the heating plate to control the temperature of the heating plate so that the impregnated fiber bundle wrapped in the spiral groove of the core mold 21 is cured and formed;

[0064] The control mechanism is used to set the rotation speed of the rotating ring 52, the rotation speed of the turntable 43 of the demoulding mechanism 4 and the heating temperature of the temperature control mechanism, and send control instructions to the driving rotating mechanism 5, the demoulding mechanism 4 and the temperature control unit respectively.

[0065] Working process of composite spiral component forming system:

[0066] The fiber bundle is connected to the traction rope, and the traction rope is pulled by manpower or a robot, so that the fiber bundle is gathered and gathered by the fiber bundler 7 and then impregnated in the fiber impregnator 3, and then passed through the preforming assembly for 2 seconds to complete the gathering and preforming (the cross-sectional shape of the fiber is not formed at this time). After that, the traction rope and the preformed fiber bundle are driven by manpower or a robot to enter the shaping groove 212 and the shaping block 221 inside the core mold 21, and the traction rope is passed through the replacement port 213 and fixed to the traction rope fixing ring 44, and the heating plate inside the core mold is started. The temperature of the heating plate is controlled by the heating program, and the setting of the heating program is determined by the resin glue impregnated with the fiber bundle;

[0067] The rotating motor is started, which drives the gear 54 and the gear ring 53 to mesh and rotate. The gear ring 53 drives the rotating ring 52 to rotate within the arc groove 511. The rotating ring 52 drives the shaping block 221 to advance spirally within the shaping groove 221 of the spiral groove. Since the shaping block 221 and the rotating ring 52 are connected by a connecting piece and a connecting rod 222, during the spiral advancement of the shaping block 221, the rotating ring 52 rotates around the core mold 21 and advances along the length of the core mold 21. Therefore, changing the forward or reverse rotation of the rotating motor can change the movement direction of the rotating ring 52 and the shaping block 221. The fiber bundle impregnated with the resin glue is formed and solidified as the shaping block 221 moves from one end of the core mold 21 along the spiral groove to the other end of the core mold 21 (the cross-sectional shape of the fiber has been formed at this point).

[0068] Turn off and start the rotating motor, start the driving motor, and the driving motor drives the turntable 43 to rotate along the spiral direction of the spiral groove and move with the linear motion unit 41 in the direction away from the core mold 21 to complete the demolding. In this process, the pre-formed impregnated fiber bundle that is cured and connected to the cured spiral composite material will be synchronously wound in the shaping groove 221 for further heating and shaping. If the length of the molded product is too long, the traction rope can be connected to the middle of the molded product to facilitate smooth demolding. After demolding, turn off the driving motor and start the rotating motor again.

[0069] The above process is repeated to realize the continuous production of composite spiral products.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for forming a spiral composite material, characterized in that: The steps include: 1) preparing a preforming component (1) and a forming component, wherein the preforming component (1) comprises: a heating cylinder (11), the heating cylinder (11) is provided with a through hole (12) which passes through the heating cylinder transversely, and a heating plate is provided inside the heating cylinder (11); The molding component comprises: a core mold (21); a spiral groove for winding the impregnated fiber is arranged along the length of the outer wall of the core mold (21); the spiral groove comprises a limiting groove (211) and a shaping groove (212); the groove bottom of the limiting groove (211) is connected with the shaping groove (212); the groove width of the limiting groove (211) is smaller than the groove width of the shaping groove (212); and a shaping device (22) matching the spiral groove; the shaping device (22) comprises a shaping block (212) matching the shaping groove (212). The core mold (21) is provided with a connecting rod (221) and a connecting rod (222) that can pass through the limiting groove (211); replacement openings (213) for replacing the shaper (22) are provided at both ends of the core mold (21); one end of the connecting rod (222) is detachably connected to the shaping block (221), and the other end is connected to a driving rotating mechanism (5) that is jacketed outside the core mold (21) through a connecting piece; the shaping block (221) is also provided with a fiber through hole that passes through the shaping block (221); and a heating plate is provided inside the core mold (21); 2) connecting the plurality of fibers to a traction rope, pulling the traction rope to pull the plurality of fibers into a fiber impregnation device (3) for bundling, performing an impregnation treatment on the fibers in the fiber impregnation device (3) to obtain an impregnated fiber bundle, and pulling the impregnated fiber bundle into a preforming component for preforming to obtain a preformed fiber bundle; 3) The traction rope is wound into the shaping groove (212) of the spiral groove of the core mold (21), and passes through the replacement port (213) to connect with the demoulding mechanism (4), and the traction rope drives the preformed fiber bundle into the shaping groove (212); the dipped fiber bundle connected to the preformed fiber bundle enters the preformed component (1) to form a second section of the preformed fiber bundle, and the core mold (21) heats and solidifies the preformed fiber bundle wound in the shaping groove (212) in the spiral groove to form a spiral composite material; the demoulding mechanism (4) rotates The spiral composite material is demoulded by pulling the traction rope, and the second section of preformed fiber bundle connected to the spiral composite material is pulled into the shaping groove (212) for solidification and shaping.

2. The spiral composite material forming method according to claim 1, characterized in that: The driving rotation mechanism (5) comprises a moving platform (51) and a rotating ring (52) which can be covered with a core mold (21); the moving platform (51) is provided with an arc groove (511) for fixing the rotating ring (52); and a ball (512) is provided in the arc groove (511) along an arc direction; A protrusion extending toward the side end is provided on one side of the rotating ring (52), and a gear ring (53) coaxially arranged with the rotating ring (52) is connected to one side of the protrusion. The device also includes a rotating motor mounted on the moving platform (51), and a gear (54) meshing with the teeth of the gear ring (53) is sleeved on the rotating shaft of the rotating motor; and a fixed platform (55) is provided at the bottom of the moving platform (51), and a smooth flat groove is provided on the top of the fixed platform (55) for accommodating the movement of the moving platform (51).

3. The spiral composite material forming method according to claim 2, characterized in that: External threads are provided at both ends of the connecting rod (222), and the connecting piece and the shaping block (221) are respectively provided with thread grooves matching the external threads. The connecting piece and the shaping block (221) are detachably connected to the connecting rod (222) via the thread grooves and the external threads.

4. The spiral composite material forming method according to claim 3, characterized in that: The demoulding mechanism (4) comprises a linear motion unit (41) and a fixed column (42) fixed on a movable plate of the linear motion unit (41); a driving motor is mounted on the fixed column (42); a rotating shaft of the driving motor is connected to a rotating disk (43) via a shaft sleeve; and a traction rope fixing ring (44) is fixed on the rotating disk (43).

5. The spiral composite material forming method according to claim 4, characterized in that: The fiber impregnation device (3) comprises a base (31), a placement groove is provided on the top of the base (31), a fiber bundler (7) is placed in the placement groove, a fixed ring (32) is provided directly above the fiber bundler (7), the bottom of the fixed ring (32) is connected to the base (31) through a support frame, a glue liquid box (33) is provided on the top of the fixed ring (32), a conical liquid outlet (34) is provided at the bottom of the glue liquid box (33), a control valve is installed on the conical liquid outlet (34), and the conical liquid outlet (34) at the bottom of the glue liquid box (33) passes through the center of the fixed ring (32) and is connected to the fiber bundler (7).

6. The spiral composite material forming method according to claim 5, characterized in that: The fiber bundler (7) comprises a long tube, one end of which is a fiber entry end and the other end is a fiber exit end. A hollow chamber is arranged in the long tube, and the inner diameter of the hollow chamber gradually decreases from the fiber entry end to the fiber exit end. The fiber entry end is provided with a fiber entry port (71) connected to the hollow chamber, and the fiber exit end is provided with a fiber exit port (72) connected to the hollow chamber. The diameter of the fiber entry port (71) is larger than the diameter of the long tube fiber exit port (72). An impregnation port (73) is arranged on the outer wall of the long tube, and the impregnation port (73) is connected to the hollow chamber. The impregnation port (73) is connected to the conical liquid outlet (34).

7. The spiral composite material forming method according to claim 6, characterized in that: The fiber outlet (72) of the fiber bundler (7) is connected to the heating tube (11) of the preform assembly (1) via a connecting tube (8), and opposite external threads are provided at both ends of the connecting tube (8). The through hole (12) of the heating tube (11) and the fiber outlet (72) of the fiber bundler (7) are respectively provided with opposite internal threads matching the external threads. The heating tube (11) and the fiber outlet (72) are respectively connected to the connecting tube (8) via external threads and internal threads.

8. The method for forming a spiral composite material according to claim 7, characterized in that: The heating cylinder (11) is fixed to the ground via a bracket, and the core mold (21) is fixed to the ground via a bracket.

9. The method for forming a spiral composite material according to claim 8, characterized in that: The cross-sectional shape of the fiber perforation is one of circular, rectangular or polygonal.

10. A molding control system based on the spiral composite material molding method according to any one of claims 1 to 9, characterized in that: include A driving rotating mechanism (5) is used to make the rotating ring (52) rotate around the axis of the core mold (21), thereby driving the shaping block (221) to move forward in the shaping groove (212); A demoulding mechanism (4) is used to pull the traction rope to demould the spiral composite material, and to pull the second section of preformed fiber bundle connected to the spiral composite material into the shaping groove (212) for solidification and shaping; A temperature control mechanism is used to connect with the heating plate to control the temperature of the heating plate so that the impregnated fiber bundle wound in the spiral groove of the core mold (21) is solidified and formed; The control mechanism is used to set the rotation speed of the rotating ring (52), the rotation speed of the demoulding mechanism (4) turntable (43) and the heating temperature of the temperature control mechanism, and to send control instructions to the driving rotating mechanism (5), the demoulding mechanism (4) and the temperature control unit respectively.

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