Large-tension winding and conveying system for prepreg tape

Abstract

The invention relates to the technical field of winding and conveying systems, in particular to a prepreg tape large-tension winding and conveying system which comprises a prepreg tape yarn releasing creel and a tension control device, multiple sets of tension control boxes are installed at the upper end of a tension control rack at equal intervals, and tension control swing rods are installed below the front ends of the tension control boxes; a cantilever control box and an encoder guide roller are installed at the left end and the right end of the tension control rack correspondingly, and an electrical cabinet is installed on the right side of the inner wall of the tension control rack. The prepreg tape large-tension winding and conveying system comprises four groups of air swelling shafts, 1-4 spindles of prepreg tapes can be selectively placed according to requirements, the rack structure is stable and firm, high-speed rotation of the air swelling shafts can be ensured, the tension of the prepreg tapes is always kept constant, and the prepreg tapes are free of sliding friction fuzzing, so that guarantee is provided for continuous and stable winding production of large-tension gas cylinders, and the production efficiency is improved. And a more efficient, more environment-friendly and higher-quality composite material manufacturing process is realized.

Description

Technical Field

[0001] The invention relates to the technical field of winding conveying systems, in particular to a prepreg tape high-tension winding conveying system. Background Art

[0002] Winding is a process used to manufacture fiber-reinforced composite materials, usually used to produce cylindrical structural parts. The core of the winding process is to wind the fiber material on the mold according to a specific pattern to form composite parts, such as pressure cylinders, composite pipes, etc., which are widely used in aerospace, automotive industry, sports equipment, wind power generation and new energy fields.

[0003] The winding process is mainly divided into wet winding and dry winding. The wet winding process is to impregnate the carbon fiber tow in the impregnation device and then directly wind it onto the core mold; the dry winding process uses pre-impregnated yarn or tape as raw material, which is heated and softened on the winding machine and then wound onto the core mold.

[0004] In wet winding, the fiber is easy to take out the resin after leaving the impregnation device, resulting in resin waste. In order to avoid this phenomenon, the wet winding speed is often slow; the resin content of the product is not easy to control and inspect during the winding process, and the tension applied to the fiber is also not easy to control. Therefore, there are a series of deficiencies in the process control, quality control and product performance of composite materials. At the same time, the solvent or low-boiling point component in the resin system is easy to form defects such as bubbles and gaps during curing, affecting the molding quality and the final product performance. In addition, it also has an adverse effect on personnel health, equipment maintenance and environmental protection.

[0005] Since the prepreg tapes in dry winding are professionally produced, the resin content can be accurately controlled to control the quality of the prepreg yarn, and the mechanical properties of the cured products have a smaller change. Compared with wet winding, dry winding can achieve a higher winding speed, improve the production efficiency of parts, and the winding speed can reach 100-420m / min; the working environment is clean and tidy, there is no resin flow waste, and the operator can reduce the inhalation of toxic substances in the environment; at the same time, the quality and performance of the molded products can be better guaranteed.

[0006] The selection of winding process parameters has a great influence on the performance of composite products. In order to improve the performance of winding composite materials, it is particularly important to optimize its main process parameters. Winding tension is an important process parameter in the winding process. The purpose is to make the fiber neatly and evenly wound on the core mold, thereby ensuring the uniformity of tension between each fiber and each winding layer, and giving full play to the strength of carbon fiber.

[0007] It is difficult to accurately control the tension during high-tension winding in the existing technology. Moreover, since the prepreg yarn is wound into a roll on the unwinding roller, excessive tension will cause the prepreg yarn to be squeezed and collapse, resulting in burrs on the prepreg yarn, which will greatly affect the quality of the gas cylinder product obtained by winding. Therefore, the present invention patents a high-tension winding transmission system for prepreg tape, which can effectively solve the above-mentioned problems and realize a more efficient, more environmentally friendly and higher-quality composite material manufacturing process. Summary of the invention

[0008] The purpose of the present invention is to solve the problem that the prior art of the device is difficult to accurately control the tension during the high-tension winding process, and because the prepreg yarn is in a rolled state on the unwinding roller, excessive tension will cause the resin of the prepreg yarn roll to be squeezed and collapsed, resulting in burrs on the prepreg yarn, and the quality of the gas cylinder product obtained by winding will be greatly affected. A high-tension winding and conveying system for prepreg tape is proposed.

[0009] To achieve the above object, the present invention provides the following technical solutions: A prepreg tape high-tension winding and conveying system is designed, comprising a prepreg tape unwinding yarn frame and a tension control device, wherein the tension control device consists of a cantilever control box, a guide wheel assembly, a limit roller, a tension control box, a weighing sensor, a tension control swing rod, an encoder guide roller, an electrical cabinet and a tension control frame, wherein a plurality of tension control boxes are equidistantly installed on the upper end of the tension control frame, a guide wheel assembly and a limit roller are installed above the front end of the tension control box, a weighing sensor is installed on the right side of the front end of the tension control box, a tension control swing rod is installed below the front end of the tension control box, a cantilever control box and an encoder guide roller are installed on the left and right ends of the tension control frame respectively, and an electrical cabinet is installed on the right side of the inner wall of the tension control frame.

[0010] Preferably, the prepreg tape unwinding creel is composed of an air inflation shaft assembly, a unwinding creel frame frame and a control button panel, a plurality of groups of air inflation shaft assemblies are installed above the front end of the unwinding creel frame frame, and a control button panel is installed on the right side of the front end of the unwinding creel frame frame.

[0011] Preferably, the tension control rocker arm includes a rocker arm shaft bearing seat and a low-friction cylinder, the top of the low-friction cylinder is rotatably connected to the tension control box through a pin shaft, the end of the output shaft of the low-friction cylinder is rotatably connected to the swing arm through a pin shaft, the inner wall of the swing arm is fixedly connected to the rocker arm shaft, the outer wall of the rocker arm shaft is rotatably connected to the rocker arm shaft bearing seat, the rear outer wall of the rocker arm shaft bearing seat is fixedly connected to the tension control box through bolts, the front end of the rocker arm shaft is fixedly connected to a rocker arm, and the end of the rocker arm is rotatably connected to a rocker arm wheel.

[0012] Preferably, a rocker arm is fixedly connected to the right side of the front end outer wall of the rocker arm shaft bearing seat, and an angle sensor is installed at the rear end of the rocker arm.

[0013] Preferably, the pneumatic shaft assembly includes a pneumatic shaft mounting plate, the lower rear end of the pneumatic shaft mounting plate is fixedly connected to the servo motor via a motor mounting bracket, an pneumatic shaft bearing seat is fixedly connected to the upper rear end of the pneumatic shaft mounting plate, the inner wall of the pneumatic shaft bearing seat is rotatably connected to the pneumatic shaft, the rear end of the pneumatic shaft and the output shaft end of the servo motor are both fixedly connected to synchronous pulleys, the outer walls of the synchronous pulleys on both sides are rotatably connected via synchronous belts, and the front outer wall of the pneumatic shaft is fixedly connected to a prepreg tape.

[0014] The invention provides a prepreg tape high tension winding and conveying system, which has the following beneficial effects: This prepreg high-tension winding and conveying system includes 4 groups of air-expansion shafts, and 1-4 ingots of prepreg can be placed according to demand. The frame structure is stable and solid, which can ensure the high-speed rotation of the air-expansion shaft. The maximum transmission speed is 420m / min, and the transmission of the prepreg is not affected. According to the different winding processes, it can output any tension below 8kg. The tension of the prepreg always remains constant, and the prepreg has no sliding friction and fuzzing, which provides a guarantee for the continuous and stable production of high-tension gas cylinder winding, and realizes a more efficient, more environmentally friendly and higher-quality composite material manufacturing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a prepreg tape high tension winding conveying system; Figure 2 It is a schematic diagram of the structure of the air expansion shaft in the prepreg tape unwinding creel; Figure 3 Schematic diagram of the structure of the tension control swing rod.

[0016] In the figure: 1. Prepreg tape unwinding creel, 1-1. Air expansion shaft assembly, 1-2. Unwinding creel frame, 1-3. Control button panel, 2. Tension control device, 2-1. Cantilever control box, 2-2. Guide wheel assembly, 2-3. Limit roller, 2-4. Tension control box, 2-5. Weighing sensor, 2-6. Tension control swing rod, 2-7. Encoder guide roller, 2-8. Electrical cabinet, 2-9. Tension control frame, 1-1-1. Prepreg tape, 1-1-2. Air expansion shaft assembly, 1-2. Air expansion shaft assembly, 1-3. Control button panel, 2. Tension control device, 2-1. Cantilever control box, 2-2. Guide wheel assembly, 2-3. Limit roller, 2-4. Tension control box, 2-5. Weighing sensor, 2-6. Tension control swing rod, 2-7. Encoder guide roller, 2-8. Electrical cabinet, 2-9. Tension control frame, 1-1-1. Prepreg tape, 1-1-2. Expansion shaft, 1-1-3, gas expansion shaft mounting plate, 1-1-4, motor mounting bracket, 1-1-5, synchronous belt, 1-1-6, synchronous pulley, 1-1-7, servo motor, 1-1-8, gas expansion shaft bearing seat, 2-6-1, rocker wheel, 2-6-2, rocker, 2-6-3, limit rod, 2-6-4, rocker shaft, 2-6-5, rocker shaft bearing seat, 2-6-6, rocker arm, 2-6-7, low friction cylinder, 2-6-8, angle sensor. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings: See attached Figure 1-3 : In the present embodiment, a prepreg tape high-tension winding and conveying system comprises a prepreg tape unwinding yarn frame 1 and a tension control device 2, wherein the tension control device 2 comprises a cantilever control box 2-1, a guide wheel assembly 2-2, a limit roller 2-3, a tension control box 2-4, a weighing sensor 2-5, a tension control swing rod 2-6, an encoder guide roller 2-7, an electrical cabinet 2-8 and a tension control frame 2-9, wherein a plurality of tension control boxes 2-4 are equidistantly installed at the upper end of the tension control frame 2-9, a guide wheel assembly 2-2 and a limit roller 2-3 are installed above the front end of the tension control box 2-4, a weighing sensor 2-5 is installed on the right side of the front end of the tension control box 2-4, a tension control swing rod 2-6 is installed below the front end of the tension control box 2-4, a cantilever control box 2-1 and an encoder guide roller 2-7 are installed at the left and right ends of the tension control frame 2-9 respectively, and an electrical cabinet 2-8 is installed on the right side of the inner wall of the tension control frame 2-9; The limiting roller 2-3 limits the prepreg tape from swinging at the position of the guide wheel assembly 2-2, and also offsets the reciprocating motion of the spindle. The roller body of the limiting roller 2-3 is made of special reinforced Teflon material, which reduces the friction between the prepreg tape and the roller surface and is also convenient for daily cleaning.

[0018] The guide wheel assembly 2-2 is responsible for transferring the prepreg tape to the tension control swing rod 2-6. The guide wheel assembly 2-2 is made of special reinforced Teflon material to reduce the friction between the prepreg tape and the roller surface.

[0019] The tension of the tension-controlled pendulum 2-6 is provided by the low-friction cylinder 2-6-7, which rotates the pendulum shaft 2-6-4 through the swing arm 2-6-6. The pendulum shaft 2-6-4 drives the pendulum wheel 2-6-1 on the pendulum 2-6-2 to provide a downward force. The angle sensor 2-6-8 detects and controls the position of the pendulum 2-6-2 to keep it in a horizontal position at all times. A maximum tension of 8kg can be provided.

[0020] The weighing sensor 2-6-8 is responsible for real-time detection of the current transmission tension, and can control the transmission of the prepreg tape together with the tension control swing rod 2-6 to make the transmission process more stable. The detected tension value can be displayed on the screen as a curve to observe the tension fluctuation.

[0021] The encoder guide rollers 2-7 are divided into guide rollers and encoder mounting rollers to detect the current winding speed. The winding machine can be started or stopped by feeding back the rotation of the encoder guide rollers to the motor to control the current required conveying speed of the prepreg tape.

[0022] The tension control swing rod 2-6 includes a swing rod shaft bearing seat 2-6-5 and a low friction cylinder 2-6-7. The upper part of the low friction cylinder 2-6-7 is rotatably connected to the tension control box 2-4 through a pin shaft. The output shaft end of the low friction cylinder 2-6-7 is rotatably connected to the swing arm 2-6-6 through a pin shaft. The inner wall of the swing arm 2-6-6 is fixedly connected to the swing rod shaft 2-6-4. The outer wall of the swing rod shaft 2-6-4 is rotatably connected to the swing rod shaft bearing seat 2-6-5. The rear outer wall of the swing rod shaft bearing seat 2-6-5 is fixedly connected to the tension control box 2-4 through bolts. The front end of the swing rod shaft 2-6-4 is fixedly connected to the swing rod 2-6-2. The end of the swing rod 2-6-2 is rotatably connected to the swing rod wheel 2-6-1. The right side of the front outer wall of the swing rod shaft bearing seat 2-6-5 is fixedly connected to the swing rod 2-6-3. The rear end of the swing rod 2-6-4 is installed with an angle sensor 2-6-8. The tension control device 2 includes a cantilever control box cantilever control box 2-1, a guide wheel assembly 2-2, a limit roller 2-3, a tension control box 2-4, a weighing sensor 2-5, a tension control swing rod 2-6, an encoder guide roller 2-70, an electrical cabinet 2-8 and a tension control frame 2-9, such as Figure 3 The tension control rocker arm 2-6 shown is connected by a rocker arm wheel 2-6-1, a rocker arm 2-6-2 and a rocker arm shaft 2-6-4, a limit rod 2-6-3 limits the swing angle of the rocker arm 2-6-2, the rocker arm shaft 2-6-4 is connected to the rocker arm shaft bearing seat 2-6-5, the rocker arm 2-6-6 is fixed on the rocker arm shaft 2-6-4 by a key and a nut, the low friction cylinder 2-6-7 is connected to the tension control box 2-4 panel and the rocker arm 2-6-6, and the angle sensor 2-6-8 is installed at the end of the rocker arm shaft 2-6-4.

[0023] See attached Figure 1-3 : The prepreg tape unwinding creel 1 is composed of an air inflation shaft assembly 1-1, a unwinding creel frame 1-2 and a control button panel 1-3. A plurality of air inflation shaft assemblies 1-1 are installed above the front end of the unwinding creel frame 1-2, and a control button panel 1-3 is installed on the right side of the front end of the unwinding creel frame 1-2; The gas expansion shaft assembly 1-1 includes a gas expansion shaft mounting plate 1-1-3, the lower rear end of the gas expansion shaft mounting plate 1-1-3 is fixedly connected to the servo motor 1-1-7 through a motor mounting bracket 1-1-4, a gas expansion shaft bearing seat 1-1-8 is fixedly connected to the upper rear end of the gas expansion shaft mounting plate 1-1-3, the inner wall of the gas expansion shaft bearing seat 1-1-8 is rotatably connected to the gas expansion shaft 1-1-2, the rear end of the gas expansion shaft 1-1-2 and the output shaft end of the servo motor 1-1-7 are both fixedly connected to a synchronous pulley 1-1-6, the outer walls of the synchronous pulleys 1-1-6 on both sides are rotatably connected through a synchronous belt 1-1-5, and the front outer wall of the gas expansion shaft 1-1-2 is fixedly connected to a prepreg tape 1-1-1; The prepreg tape unwinding yarn rack 1 comprises 4 groups of air expansion shaft assemblies 1-1 and an unwinding yarn rack frame 1-2. Each group of air expansion shaft assemblies 1-1 can be individually controlled by a control button panel 1-3. The air expansion shaft 1-1-2 and the air expansion shaft bearing seat 1-1-8 are combined and installed on the air expansion shaft mounting plate 1-1-3. The servo motor 1-1-7 is fixed to the motor mounting bracket 1-1-4 and then installed on the air expansion shaft mounting plate 1-1-3. The air expansion shaft 1-1-2 is driven by the servo motor 1-1-7 through a synchronous pulley 1-1-6 and a synchronous belt 1-1-5. The model of the servo motor 1-1-7 can be determined according to specific usage.

[0024] The air expansion shaft 1-1-2 tightens the paper tube of the prepreg tape 1-1-1 on the shaft through compressed air. There are 4 groups of air expansion shafts 1-1-2 on the creel. The number of groups of air expansion shafts to release the wire can be selected according to the size of the winding gas cylinder. The air expansion shaft is driven by the servo motor 1-1-7 through the synchronous pulley 1-1-6 and the synchronous belt 1-1-1, with high transmission efficiency and fast response speed.

[0025] The unwinding creel frame 1-2 is welded from carbon steel, and has a firm and stable structure. It can filter out the vibration caused by the high-speed rotation of multiple air expansion shafts, and ensure the stable transmission of the prepreg tape during the winding process.

[0026] Working principle: Each group of gas expansion shaft components 1-1 can be controlled individually by the control button panel 1-3. The gas expansion shaft 1-1-2 and the gas expansion shaft bearing seat 1-1-8 are installed on the gas expansion shaft mounting plate 1-1-3. The servo motor 1-1-7 is fixed to the motor mounting bracket 1-1-4 and then installed on the gas expansion shaft mounting plate 1-1-3. The gas expansion shaft 1-1-2 is driven by the servo motor 1-1-7 through the synchronous pulley 1-1-6 and the synchronous belt 1-1-5, with high transmission efficiency. The response speed is fast; after the paper tube of the prepreg tape 1-1-1 is put into the air expansion shaft 1-1-2, the control switch of the air expansion shaft 1-1-2 is pressed through the work position number switch corresponding to the control button panel 1-3, so that the prepreg tape 1-1-1 is firmly tightened on the air expansion shaft 1-1-2. The silk yarn rack frame 1-2 is welded by carbon steel, with a firm and stable structure, which can filter out the vibration caused by the high-speed rotation of multiple air expansion shafts 1-1-2, and ensure the stable transmission of the prepreg tape 1-1-1 during the winding process.

[0027] The prepreg tape 1-1-1 is placed in the air expansion shaft 1-1-2, and the wire head is passed through the limit roller 2-3, the guide wheel assembly 2-2, the swing rod wheel 2-6-1, the weighing sensor 2-5, and the encoder guide roller 2-7, and finally pulled to the gas cylinder of the winding machine, and the air expansion shaft 1-1-2 is tightened. The operation is performed on the screen of the cantilever control box 2-1 to establish the initial tension and start the winding machine. The winding machine will lift the swing rod 2-6-2 through the prepreg tape 1-1-1, and the angle sensor 2-6-8 controls the speed of the servo motor 1-1-7 by detecting the rotation angle of the swing rod 2-6-2 through voltage. The weighing sensor 2-5 detects the real-time tension of the current transmission and displays it on the screen of the cantilever control box 2-1. The encoder guide roller 2-70 detects the winding speed of the current winding machine and transmits the signal to the servo motor 1-1-7 to control the wire release speed, ensuring that the prepreg tape 1-1-1 is in a constant tension state during the winding process. According to the winding process, the required tension is set on the cantilever control box 2-1 screen. The tension can be freely set below 8kg.

[0028] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A prepreg tape high tension winding and conveying system, comprising a prepreg tape unwinding creel (1) and a tension control device (2), characterized in that: The tension control device (2) is composed of a cantilever control box (2-1), a guide wheel assembly (2-2), a limit roller (2-3), a tension control box (2-4), a weighing sensor (2-5), a tension control swing rod (2-6), an encoder guide roller (2-7), an electrical cabinet (2-8) and a tension control frame (2-9). A plurality of tension control boxes (2-4) are equidistantly mounted on the upper end of the tension control frame (2-9). A guide wheel assembly (2-2) and a limit roller (2-3) are mounted above the front end of the tension control box (2-4). A weighing sensor (2-5) is mounted on the right side of the front end of the tension control box (2-4). A tension control swing rod (2-6) is mounted below the front end of the tension control box (2-4). The cantilever control box (2-1) and the encoder guide roller (2-7) are mounted on the left and right ends of the tension control frame (2-9), respectively. The electrical cabinet (2-8) is mounted on the right side of the inner wall of the tension control frame (2-9).

2. A prepreg tape high tension winding and conveying system according to claim 1, characterized in that: The prepreg tape unwinding creel (1) is composed of an air inflation shaft assembly (1-1), a unwinding creel frame (1-2) and a control button panel (1-3); a plurality of air inflation shaft assemblies (1-1) are installed above the front end of the unwinding creel frame (1-2); and a control button panel (1-3) is installed on the right side of the front end of the unwinding creel frame (1-2).

3. The prepreg tape high tension winding and conveying system according to claim 1, characterized in that: The tension control swing arm (2-6) comprises a swing arm shaft bearing seat (2-6-5) and a low-friction cylinder (2-6-7); the upper portion of the low-friction cylinder (2-6-7) is rotationally connected to the tension control box (2-4) via a pin shaft; the output shaft end of the low-friction cylinder (2-6-7) is rotationally connected to the swing arm (2-6-6) via a pin shaft; the inner wall of the swing arm (2-6-6) is fixedly connected to the swing arm shaft (2-6-4); the outer wall of the swing arm shaft (2-6-4) is rotationally connected to the swing arm shaft bearing seat (2-6-5); the rear outer wall of the swing arm shaft bearing seat (2-6-5) is fixedly connected to the tension control box (2-4) via bolts; the front end of the swing arm shaft (2-6-4) is fixedly connected to a swing arm (2-6-2); the end of the swing arm (2-6-2) is rotationally connected to a swing arm wheel (2-6-1).

4. A prepreg tape high tension winding and conveying system according to claim 2, characterized in that: A swing rod (2-6-3) is fixedly connected to the right side of the front end outer wall of the swing rod shaft bearing seat (2-6-5), and an angle sensor (2-6-8) is installed at the rear end of the swing rod (2-6-4).

5. The prepreg tape high tension winding and conveying system according to claim 1, characterized in that: The gas expansion shaft assembly (1-1) comprises a gas expansion shaft mounting plate (1-1-3), the lower rear end of the gas expansion shaft mounting plate (1-1-3) is fixedly connected to the servo motor (1-1-7) via a motor mounting bracket (1-1-4), the upper rear end of the gas expansion shaft mounting plate (1-1-3) is fixedly connected to a gas expansion shaft bearing seat (1-1-8), the inner wall of the gas expansion shaft bearing seat (1-1-8) is rotatably connected to the gas expansion shaft (1-1-2), the rear end of the gas expansion shaft (1-1-2) and the output shaft end of the servo motor (1-1-7) are both fixedly connected to synchronous pulleys (1-1-6), the outer walls of the synchronous pulleys (1-1-6) on both sides are rotatably connected via synchronous belts (1-1-5), and the front outer wall of the gas expansion shaft (1-1-2) is fixedly connected to a prepreg tape (1-1-1).

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