A high-temperature thermoplastic composite material in-situ forming device and processing method

Abstract

The invention relates to an in-situ forming device and a processing method for a high-temperature thermoplastic composite material, wherein a flange is connected to a flange adapter plate, and the flange adapter plate is connected to a connecting plate; a pressure control mechanism is located at the back of the connecting plate; a rewinding mechanism is located at the end of the connecting plate; a tension mechanism is located behind the rewinding mechanism; a guide mechanism is located between the tension mechanism and a rolling mechanism; a thermocouple heating mechanism is located above the guide mechanism and partially overlaps with the guide mechanism, and a prepreg tape is slowly heated up when passing through the guide mechanism by contact heating; a re-feeding mechanism is located in the middle of the guide mechanism; a shearing mechanism is located in the middle of the guide mechanism and behind the re-feeding mechanism; a laser heating mechanism is installed on the connecting plate through an angle adjustment component, and heats the prepreg tape to make it reach a bonding temperature; a rolling mechanism is located behind the guide mechanism and at the end of the device, and is adhered to the surface of the workpiece by rolling; the invention can complete the curing process while winding, eliminates the process of switching workstations in traditional processes, and improves the laying quality and laying efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of in-situ forming of thermoplastic composite materials, and in particular to an in-situ forming device and a processing method for high-temperature thermoplastic composite materials, and is particularly suitable for in-situ forming processing of peek thermoplastic composite materials. Background Art

[0002] Composite materials used in the aerospace field are mainly divided into thermosetting composites and thermoplastic composites. The process involves spirally wrapping a strip of material around a core mold surface through equipment, and then forming it through layer-by-layer stacking. Although continuous fiber-reinforced thermosetting composites are widely used, their molding process requires curing in an autoclave, which reduces production efficiency and increases manufacturing costs. Moreover, the cost of an autoclave increases exponentially with its volume, making it impossible to produce large-scale composite parts, greatly limiting its application. This has made continuous fiber-reinforced thermoplastic composites gradually become one of the preferred materials in the aerospace equipment manufacturing field.

[0003] Currently, thermoplastic composite components produced using automated layup methods have numerous defects compared to components produced using traditional hot pressing methods, with interlaminar strength only 50%-90% of that achieved using traditional methods. These defects are particularly prominent in materials with higher performance, such as peek carbon fiber composites, which are more difficult to form in situ. For example, poor layup quality and inefficiency for peek carbon fiber composites create inconveniences in thermoplastic composite forming processes.

[0004] Currently, thermosetting composite materials are produced through a repetitive cycle of winding, curing, rewinding, and recuring. Winding requires winding equipment, and curing requires a curing oven, so the product needs to switch back and forth between different workstations during this process, greatly reducing production efficiency and molding accuracy. For this reason, it is necessary to develop a thermoplastic composite material that can complete the curing process while winding, eliminating the traditional process of switching workstations, which is called in-situ molding.

[0005] new content

[0006] The purpose of the present invention is to provide a high-temperature thermoplastic composite in-situ forming device and processing method, and to provide a multiple auxiliary heating in-situ forming device for the thermoplastic composite forming process, which can complete the curing process while winding, eliminating the traditional process of switching workstations and improving the laying quality and laying efficiency.

[0007] In order to achieve the above object, the present invention has the following technical solutions:

[0008] The present invention provides an in-situ forming device for high-temperature thermoplastic composite materials, comprising: a flange 1, a flange adapter plate 201, a connecting plate 12, and a pressure control mechanism 3, an unwinding mechanism 4, a tension mechanism 5, a guide mechanism 6, a thermocouple heating mechanism 7, a re-feeding mechanism 8, a shearing mechanism 9, a rolling mechanism 10, and a laser heating mechanism 11 installed on the connecting plate; the flange is connected to the flange adapter plate 201, and the flange adapter plate 201 is connected to the connecting plate 12; the pressure control mechanism 3 is located on the back of the connecting plate 12 and is used to provide pressure to the rolling mechanism; the unwinding mechanism 4 is located at the end of the connecting plate 12 and is used to transport the prepreg to the laying position of the high-temperature thermoplastic composite material; the tension mechanism 5 is located behind the unwinding mechanism and is used to adjust the tension applied to the prepreg; the guide mechanism 6 is located at the tension mechanism 5 The thermocouple heating mechanism 7 is located above the guide mechanism and partially overlaps with the guide mechanism, and the prepreg is slowly heated up when passing through the guide mechanism by contact heating; the re-feeding mechanism 8 is located in the middle of the guide mechanism, and is used to re-convey the prepreg to a suitable position under the rolling mechanism after cutting the prepreg; the shearing mechanism 9 is located in the middle of the guide mechanism and behind the re-feeding mechanism, and is used to cut the prepreg when it needs to pass through a jump point; the laser heating mechanism is installed on the connecting plate through an angle adjustment component to heat the prepreg to reach the bonding temperature; the rolling mechanism 10 is located behind the guide mechanism, at the end of the device, and is used to adhere the prepreg guided by the guide mechanism to the workpiece surface by rolling.

[0009] Among them, the pressure control mechanism is fixed on the fixed base plate 202, which is a pneumatic device. At the same time, a gyroscope is integrated on it, which can maintain constant pressure when the angle of the equipment changes; the fixed base plate 202 is connected to the connecting plate 12, one end of the flange 1 is connected to the flange adapter plate 201, and the other end can be used to install a robotic arm; the flange adapter plate 201 is fixedly connected to the fixed base plate 202, and in order to maintain strength, reinforcing ribs 203 are used to be fixedly connected to the pressure control mechanism 3 and the flange adapter plate 201 respectively.

[0010] Among them, the unwinding mechanism is connected to the fixed base plate through the unwinding fixed plate 405, the torque motor 403 is installed on the motor mounting plate 402, and then fixed to the unwinding fixed plate 405 through the motor support plate 401, the working end of the torque motor is installed with the torque sensor 404 in turn, the adapter shaft 406 is connected to the pneumatic shaft 407, the outer ring of the support bearing 411 is fixed by the unwinding fixed plate 405 and the bearing stop block 410, and the inner side is in contact with the adapter shaft 406 to assist in supporting the pneumatic shaft.

[0011] Among them, the tension mechanism is fixed on the lifting shaft 502 through the lifting roller 501 and is connected to the connecting plate 12 through the shaft fixing plate Ⅰ503, so that the prepreg on the lifting roller 501 is lifted to a suitable position; one end of the fixed shaft 512 is connected to the fixed wheel Ⅰ511, and the other end is connected to the shaft fixing plate Ⅱ513 and is connected to the connecting plate 12 through the shaft fixing plate Ⅱ513; similarly, the fixed wheel Ⅱ514 is fixed to the connecting plate through the fixed shaft Ⅱ515; the tension base plate 504 is connected to the connecting plate 12 through the tension base plate support seat 522, the linear guide rail 506 is fixed on both sides of the tension base plate 504, the guide rail block 505 is fixed on the right side of the linear guide rail 506, the tension cylinder 516 is connected to the tension base plate 504 through the cylinder fixing plate 517, and on the tension cylinder 516, the floating joint 518, the adapter flange 519, the pressure Sensor 520, movable shaft adapter plate III 521, movable shaft adapter plate I 509, movable shaft 508; movable roller 507 is fixed on movable shaft 508, movable shaft adapter plate II 510 is connected to movable shaft adapter plate I 509 and linear guide 506 respectively, so that movable roller 507 can only move along the direction of linear guide, and the wheel group composed of movable roller 507, fixed wheel I 511 and fixed wheel II 514 keeps the prepreg tapes above and below the movable roller 507 parallel when the prepreg tape passes through; when the tension mechanism is working, the air pressure is changed through the proportional valve so that the force output by the tension cylinder is twice the set tension, and the pressure caused by the tension on the roller is twice the actual tension and is opposite to the force output by the tension cylinder. By detecting the displacement direction of the roller under the joint action of the two, the actual tension relative to the set tension can be judged and the feedback is given to the unwinding motor to adjust the tension.

[0012] Among them, the guide mechanism and the thermocouple heating mechanism are provided with grooves on the guide base plate I61 and the guide base plate II63 for the prepreg to pass through, and are connected to the heating plate I71 by screws. One end of the guide connecting seat 62 is connected to the connecting plate 12, and the other end is connected to the guide base plate I61. The guide base plate II63 is connected to the heating plate II73 by screws; the thermocouple 72 is installed on the holes of the heating plate I71 and the heating plate II73, and the two ends are fixed with baffles I74 and baffles II75 respectively; the heating plate I71 and the heating plate II73 have convex molds with the same shape as the grooves of the guide base plate I61 and the guide base plate II63, which can transfer the heat of the thermocouple 72 to the prepreg when the prepreg passes through the guide plate.

[0013] The re-feeding mechanism 8 is connected to the re-feeding reducer 802 through the re-feeding motor 801, and then fixed to the connecting plate 12 through the motor fixing plate 803 and the motor connecting plate 804. The synchronous pulley I 805 is fixed to the shaft of the re-feeding reducer 802. The left side of the passive wheel fixing plate 808 is fixed to the connecting plate 12, and the right side is fixed to the re-feeding fixing plate 812. Then, it is fixed to the connecting plate 12 through the connecting optical axis 813. Two bearing seats 811 are installed on it. The passive wheel shaft 810 passes through the two bearing seats 811 and is fixed to the synchronous pulley II 807 on the left side. A passive wheel 809 is fixed in the middle, and is driven by the re-feeding motor 801 through the synchronous belt 806; the re-feeding cylinder 819 is fixed to the connecting plate 12 by the cylinder support plate I 818 and the cylinder support plate II 820, and the driving wheel 814 is fixed to the driving wheel shaft 816 by the shaft sleeve I 815, and the driving wheel shaft 816 is connected to the re-feeding cylinder 819 through the driving wheel support seat 817; when the re-feeding mechanism is working, the re-feeding cylinder pushes the passive wheel to press on the surface of the driving wheel to clamp the prepreg in the middle, and then the re-feeding motor drives the driving wheel to rotate, and drives the prepreg along the guide mechanism through friction.

[0014] Among them, the shearing mechanism 9 is a shearing cylinder 901 fixed to the connecting plate 12 through a shearing fixing plate 903, a blade I 904 is fixed on the shearing fixing plate 903, and a blade II 905 is connected to the shearing cylinder 901 through a guide seat 902. There is a guide hole in the middle of the guide seat 902, and the blade II is located directly above the guide hole, and the prepreg passes through the guide hole; when the shearing mechanism is working, the blade II and the guide seat 902 move downward under the drive of the shearing cylinder, pressing the prepreg downward, and the position of the blade I remains unchanged, thereby cutting the prepreg, and then the shearing cylinder recycles it, and the prepreg returns to the position before shearing under the drive of the guide hole.

[0015] Among them, the rolling mechanism is composed of a roller base 1001 connected to the connecting plate 12 through a base connecting block 1002, a roller 1009 connected to the roller shaft 1007 through a bearing 1008, and the roller shaft 1007 is fixed to the roller adapter plate II 1005 through a top screw and fixed to the roller base 1001 through the roller adapter plate II 1005 and the roller adapter plate I 1003. The air-cooling fixing block 1010 is installed on the roller adapter plate I 1003 and is used to fix the air-cooling pipe for cooling the roller. The extension block 1004 is fixed on the roller adapter plate II 1005; the rolling mechanism includes an end pressure roller.

[0016] The laser heating mechanism is: a laser head 1106 is installed on the connecting plate 12 through the laser head fixing plate I 1101, the laser head fixing plate II 1102, the laser head fixing plate III 1103, and the laser head fixing plate IV (1104). The mounting holes on the laser head fixing plate II 1102 and the laser head fixing plate III 1103 are U-shaped holes, which can adjust the focal length and incident angle of the laser head according to actual needs. A thermometer 1105 is installed on the laser head 1106 to monitor the prepreg tape in the heating area. In order to prevent the temperature of the laser head, a heat sink 1107 is installed between the laser head and the heating area. The heat sink 1107 is hinged to the expansion block 1004 through a heat sink fixing seat 1108 and a rotating connecting rod 1109. The fixing component 1110 is connected to the expansion block 1004 through screws, and one end is pressed on the rotating connecting rod through a hand screw. The angle of the heat sink 1107 can be manually adjusted by unscrewing the hand screw and then fixed to ensure that the laser beam passes through the middle of the two heat sinks, ensuring that the laser does not directly irradiate positions other than the heating area.

[0017] The processing method of a high-temperature thermoplastic composite material in-situ forming device of the present invention comprises the following steps:

[0018] The prepreg tape reel is fixed on the unwinding mechanism, and the prepreg tape is manually pulled through the rollers of the tensioning mechanism and fed into the re-feeding mechanism along the guide mechanism;

[0019] The re-feeding wheel in the re-feeding mechanism clamps the prepreg tape, and the re-feeding motor drives the re-feeding wheel to transport the prepreg tape along the guide mechanism. When the prepreg tape is sent out from the end of the guide mechanism and reaches the end pressure roller, the re-feeding mechanism stops working;

[0020] After the re-feeding mechanism stops working, the shearing mechanism cuts off the end of the prepreg tape, and the end prepreg tape slides out along the guide mechanism. At this time, the position of the prepreg tape remains flush with the blade of the shearing mechanism.

[0021] After the laying and wrapping begins, the thermocouple heating mechanism starts to preheat the prepreg tape. At the same time, the re-feeding mechanism clamps the prepreg tape and transports it along the guide plate I and the guide plate II to the bottom of the end pressure roller. After reaching the specified position under the end pressure roller, the laser heating mechanism starts to heat the prepreg tape, the re-feeding mechanism stops working, and the robotic arm starts to move so that the end pressure roller presses the prepreg tape on the workpiece surface. When encountering a point that needs to be skipped, the shearing mechanism cuts the prepreg tape. After the equipment moves to the next point, the above steps are repeated until the laying and wrapping is completed.

[0022] The advantages of the present invention are:

[0023] 1. The present invention uses a torque motor as a tension output device. Compared with the existing magnetic powder brake output tension, it can play the role of reverse rotation to smooth tension fluctuations when the tension suddenly changes, especially when it becomes smaller, thereby improving the accuracy of tension control;

[0024] 2. The present invention uses a thermocouple heating mechanism for preheating, which increases the melting speed of the prepreg, increases the strength of the molded component, and improves the laying speed;

[0025] 3. The present invention uses a two-stage heating method to reduce the temperature rise range of the second stage of laser heating, thereby reducing the difficulty of laser heating temperature control and making it easier to control the heating temperature of the prepreg tape within the melting range of the peekpeek thermoplastic composite material without overburning;

[0026] 4. The present invention uses a pressure control mechanism with a gyroscope to ensure that the pressure of the pressure roller on the material is stable while the winding angle changes when the equipment is working, ensuring stable process parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the assembly of the connecting flange and the pressure device of the present invention;

[0029] Figure 3 It is a schematic diagram of the assembly structure of the unwinding mechanism;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the tension mechanism;

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide mechanism and the thermocouple heating mechanism;

[0032] Figure 6 It is a three-dimensional structural diagram of the re-feeding mechanism;

[0033] Figure 7 It is an assembly diagram of the re-feeding mechanism;

[0034] Figure 8 It is the assembly diagram of the shearing mechanism;

[0035] Figure 9 It is an assembly diagram of the roller pressing mechanism;

[0036] Figure 10 It is an assembly diagram of the laser heating mechanism;

[0037] Figure 11 It is an electrical appliance control block diagram of the present invention.

[0038] Reference numerals: 1, flange; 2, reinforcement plate; 3, pressure control mechanism; 4, unwinding mechanism; 5, tension mechanism; 6, guide mechanism; 7, thermocouple heating mechanism; 8, re-feeding mechanism; 9, shearing mechanism; 11, laser heating mechanism; 10, rolling mechanism; 12, connecting plate;

[0039] 201, flange adapter plate; 202, fixed base plate; 203, reinforcing rib; 204, movable end of pressure control mechanism;

[0040] 401, motor support plate; 402, motor mounting plate; 403, torque motor; 404, torque sensor; 405, unwinding fixing plate; 406, adapter shaft; 407, air expansion shaft; 408, distance sensor; 409, sensor fixing plate; 410, bearing block; 411, support bearing;

[0041] 501, lifting roller; 502, lifting shaft; 503, shaft fixing plate I; 504, tension base plate; 505, guide rail block; 506, linear guide; 507, movable roller; 508, movable shaft; 509, movable shaft adapter plate I; 510, movable shaft adapter plate II; 511, fixed wheel I; 512, fixed shaft I; 513, shaft fixing plate II; 514, fixed wheel II; 515, fixed shaft II; 516, tension cylinder; 517, cylinder fixing plate; 518, floating joint; 519, adapter flange; 520, pressure sensor; 521, movable shaft adapter plate III; 522, tension base plate support seat; 12, connecting plate;

[0042] 61. Guide base plate I; 62. Guide connecting seat; 63. Guide base plate II;

[0043] 71. Heating plate I; 72. Thermocouple; 73. Heating plate II; 74. Baffle I; 75. Baffle II;

[0044] 801, heavy feed motor; 802, heavy feed reducer; 803, motor fixing plate; 804, motor connecting plate; 805, synchronous pulley I;

[0045] 806, synchronous belt; 807, synchronous pulley II; 808, passive pulley fixing plate; 809, passive pulley; 810, passive pulley shaft; 811, bearing seat; 812, re-feed fixing plate; 813, connecting optical axis; 814, driving pulley; 815, bushing I; 816, driving pulley shaft; 817, driving pulley support seat; 818, cylinder support plate I; 819, re-feed cylinder; 820, cylinder support plate II;

[0046] 901, shear cylinder; 902, guide seat; 903, shear fixing plate; 904, blade I; 905, blade II;

[0047] 1001, roller base; 1002, base adapter block; 1003, roller adapter plate I; 1004, extension block; 1005, roller adapter plate II; 1006, bushing II; 1007, roller axle; 1008, bearing; 1009, roller; 1010, air-cooling fixing block;

[0048] 1101. Laser head fixing plate I; 1102. Laser head fixing plate II; 1103. Laser head fixing plate III; 1104. Laser head fixing plate IV; 1105. Thermometer; 1106. Laser head; 1107. Heat sink; 1108. Heat sink fixing seat; 1109. Rotating connecting rod; 1110. Fixing assembly. DETAILED DESCRIPTION

[0049] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0050] See also Figure 1-10 The present invention provides an in-situ forming device for high-temperature thermoplastic composite materials, comprising: a flange 1, a flange adapter plate 201, a connecting plate 12, and a pressure control mechanism 3, an unwinding mechanism 4, a tension mechanism 5, a guide mechanism 6, a thermocouple heating mechanism 7, a re-feeding mechanism 8, a shearing mechanism 9, a rolling mechanism 10, and a laser heating mechanism 11 installed on the connecting plate; the flange is connected to the flange adapter plate 201, and the flange adapter plate 201 is connected to the connecting plate 12; the pressure control mechanism 3 is located on the back of the connecting plate 12 and is used to provide pressure to the rolling mechanism; the unwinding mechanism 4 is located at the end of the connecting plate 12 and is used to transport the prepreg to the laying position of the high-temperature thermoplastic composite material; the tension mechanism 5 is located behind the unwinding mechanism and is used to adjust the tension applied to the prepreg; the guide mechanism 6 is located between the tension mechanism 5 and the rolling mechanism The middle of the mechanism 10 is used to guide the prepreg from the tension mechanism to the workstation of the rolling mechanism; the thermocouple heating mechanism 7 is located above the guide mechanism and partially overlaps with the guide mechanism, and the prepreg is slowly heated up when passing through the guide mechanism by contact heating; the re-feeding mechanism 8 is located in the middle of the guide mechanism, and is used to re-convey the prepreg to a suitable position under the rolling mechanism after cutting the prepreg; the shearing mechanism 9 is located in the middle of the guide mechanism and behind the re-feeding mechanism, and is used to cut the prepreg when it needs to pass through a jump point; the laser heating mechanism is installed on the connecting plate through an angle adjustment component, and heats the prepreg to make it reach a bonding temperature of about 400℃-450℃; the rolling mechanism 10 is located behind the guide mechanism, at the end of the device, and is used to adhere the prepreg guided by the guide mechanism to the surface of the workpiece by rolling.

[0051] The pressure control mechanism 3 is fixed on the fixed base plate 202 and is a pneumatic device. At the same time, a gyroscope is integrated on it, which can maintain constant pressure when the angle of the equipment changes; the fixed base plate 202 is connected to the connecting plate 12, one end of the flange 1 is connected to the flange adapter plate 201, and the other end can be used to install a robotic arm; the flange adapter plate 201 is fixedly connected to the fixed base plate 202, and in order to maintain strength, reinforcing ribs 203 are used to be fixedly connected to the pressure control mechanism 3 and the flange adapter plate 201 respectively.

[0052] The unwinding mechanism is connected to the fixed base plate through the unwinding fixed plate 405, the torque motor 403 is installed on the motor mounting plate 402, and then fixed to the unwinding fixed plate 405 through the motor support plate 401, the working end of the torque motor is sequentially installed with the torque sensor 404, the adapter shaft 406 is connected to the air expansion shaft 407, the outer ring of the support bearing 411 is fixed by the unwinding fixed plate 405 and the bearing block 410, and the inner side is in contact with the adapter shaft 406 to assist in supporting the air expansion shaft, and the distance sensor 408 is fixed below the unwinding fixed plate through the sensor fixing plate 409.

[0053] The tension mechanism is fixed on the lifting shaft 502 through the lifting roller 501 and is connected to the connecting plate 12 through the shaft fixing plate I 503, so that the prepreg on the lifting roller 501 is lifted to a suitable position; one end of the fixed shaft 512 is connected to the fixed wheel I 511, and the other end is connected to the shaft fixing plate II 513 and is connected to the connecting plate 12 through the shaft fixing plate II 513; similarly, the fixed wheel II 514 is fixed to the connecting plate through the fixed shaft II 515; the tension base plate 504 is connected to the connecting plate 12 through the tension base plate support seat 522, the linear guide rail 506 is fixed on both sides of the tension base plate 504, the guide rail block 505 is fixed on the right side of the linear guide rail 506, the tension cylinder 516 is connected to the tension base plate 504 through the cylinder fixing plate 517, and on the tension cylinder 516, the floating joint 518, the adapter flange 519, the pressure sensor 518 are connected in sequence from left to right. Sensor 520, movable shaft adapter plate III 521, movable shaft adapter plate I 509, movable shaft 508; movable roller 507 is fixed on the movable shaft 508, and movable shaft adapter plate II 510 is respectively connected to movable shaft adapter plate I 509 and linear guide rail 506, so that the movable roller 507 can only move along the direction of the linear guide rail, and the wheel group composed of movable roller 507, fixed wheel I 511 and fixed wheel II 514 keeps the prepreg tapes above and below the movable roller 507 parallel when the prepreg tape passes through; when the tension mechanism is working, the air pressure is changed through the proportional valve so that the force output by the tension cylinder is twice the set tension, and the pressure caused by the tension on the roller is twice the actual tension and is opposite to the force output by the tension cylinder. By detecting the displacement direction of the roller under the joint action of the two, the actual tension relative to the set tension can be judged and the feedback is given to the unwinding motor to adjust the tension.

[0054] The guide mechanism and the thermocouple heating mechanism are provided with grooves on the guide base plate I61 and the guide base plate II63 for the prepreg to pass through, and are connected to the heating plate I71 by screws. One end of the guide connecting seat 62 is connected to the connecting plate 12, and the other end is connected to the guide base plate I61. The guide base plate II63 is connected to the heating plate II73 by screws; the thermocouple 72 is installed on the holes of the heating plate I71 and the heating plate II73, and the two ends are fixed by the baffle I74 and the baffle II75 respectively; the heating plate I71 and the heating plate II73 have a convex mold with the same shape as the groove of the guide base plate I61 and the guide base plate II63, which can transfer the heat of the thermocouple 72 to the prepreg when the prepreg passes through the guide plate.

[0055] The re-feeding mechanism 8 is connected to the re-feeding reducer 802 through the re-feeding motor 801, and then fixed to the connecting plate 12 through the motor fixing plate 803 and the motor connecting plate 804. The synchronous pulley I 805 is fixed to the shaft of the re-feeding reducer 802. The left side of the passive wheel fixing plate 808 is fixed to the connecting plate 12, and the right side is fixed to the re-feeding fixing plate 812. Then, it is fixed to the connecting plate 12 through the connecting optical axis 813. Two bearing seats 811 are installed on it. The passive wheel shaft 810 passes through the two bearing seats 811 and is fixed to the synchronous pulley II 807 on the left side. A passive wheel 809 is fixed and driven by the re-feeding motor 801 through the synchronous belt 806; the re-feeding cylinder 819 is fixed to the connecting plate 12 by the cylinder support plate I 818 and the cylinder support plate II 820, and the driving wheel 814 is fixed to the driving wheel shaft 816 by the shaft sleeve I 815, and the driving wheel shaft 816 is connected to the re-feeding cylinder 819 through the driving wheel support seat 817; when the re-feeding mechanism is working, the re-feeding cylinder pushes the passive wheel to press on the surface of the driving wheel to clamp the prepreg in the middle, and then the re-feeding motor drives the driving wheel to rotate, and drives the prepreg along the guide mechanism through friction.

[0056] The shearing mechanism 9 is a shearing cylinder 901 fixed to the connecting plate 12 through a shearing fixing plate 903, a blade I 904 is fixed to the shearing fixing plate 903, and a blade II 905 is connected to the shearing cylinder 901 through a guide seat 902. There is a guide hole in the middle of the guide seat 902, and the blade II is located directly above the guide hole, and the prepreg passes through the guide hole; when the shearing mechanism is working, the blade II and the guide seat 902 move downward under the drive of the shearing cylinder, pressing the prepreg downward, and the position of the blade I remains unchanged, thereby cutting the prepreg, and then the shearing cylinder recycles it, and the prepreg returns to the position before shearing under the drive of the guide hole.

[0057] The rolling mechanism is composed of a roller base 1001 connected to the connecting plate 12 through a base connecting block 1002, a roller 1009 connected to the roller shaft 1007 through a bearing 1008, the roller shaft 1007 is fixed to the roller adapter plate II 1005 through a top screw and is fixed to the roller base 1001 through the roller adapter plate II 1005 and the roller adapter plate I 1003, an air cooling fixing block 1010 is installed on the roller adapter plate I 1003, and is used to fix the air cooling pipe for cooling the roller, and the extension block 1004 is fixed on the roller adapter plate II 1005.

[0058] The laser heating mechanism is: a laser head 1106 is installed on the connecting plate 12 through the laser head fixing plate I 1101, the laser head fixing plate II 1102, the laser head fixing plate III 1103, and the laser head fixing plate IV 1104. Among them, the mounting holes on the laser head fixing plate II 1102 and the laser head fixing plate III 1103 are U-shaped holes, which can adjust the focal length and incident angle of the laser head according to actual needs. A thermometer 1105 is installed on the laser head 1106 to monitor the temperature of the prepreg in the heating area. A heat sink 1107 is installed between the laser head and the heating area. The heat sink 1107 is hinged to the extension block 1004 through a heat sink fixing seat 1108 and a rotating connecting rod 1109. The fixing component 1110 is connected to the extension block 1004 through screws, and one end is pressed on the rotating connecting rod through a hand screw. The angle of the heat sink 1107 can be manually adjusted by unscrewing the hand screw and then fixed to ensure that the laser beam passes through the middle of the two heat sinks, ensuring that the laser is not directly irradiated to positions other than the heating area.

[0059] The processing method of a high-temperature thermoplastic composite material in-situ forming device of the present invention comprises the following steps:

[0060] The prepreg tape reel is fixed on the unwinding mechanism, and the prepreg tape is manually pulled through the rollers of the tensioning mechanism and fed into the re-feeding mechanism along the guide mechanism;

[0061] The re-feeding wheel in the re-feeding mechanism clamps the prepreg tape, and the re-feeding motor drives the re-feeding wheel to transport the prepreg tape along the guide mechanism. When the prepreg tape is sent out from the end of the guide mechanism and reaches the end pressure roller, the re-feeding mechanism stops working;

[0062] After the re-feeding mechanism stops working, the shearing mechanism cuts off the end of the prepreg tape, and the end prepreg tape slides out along the guide mechanism. At this time, the position of the prepreg tape remains flush with the blade of the shearing mechanism.

[0063] After the laying and wrapping begins, the thermocouple heating mechanism starts to preheat the prepreg tape. At the same time, the re-feeding mechanism clamps the prepreg tape and transports it along the guide base plate I and the guide base plate II to the bottom of the end pressure roller. After reaching the specified position under the end pressure roller, the laser heating mechanism starts to heat the prepreg tape, the re-feeding mechanism stops working, and the robotic arm starts to move so that the end pressure roller presses the prepreg tape on the workpiece surface. When encountering a point that needs to be skipped, the shearing mechanism cuts the prepreg tape. After the equipment moves to the next point, the above steps are repeated until the laying and wrapping is completed.

[0064] Industrial computer: Nodaka NP6111-JH2, but not limited to this product;

[0065] Electrical products are mainly controlled by PLC; PLC: Beckhoff EK1100 is used, but not limited to this product;

[0066] Robotic arm, Kuka KR210, but not limited to this product;

[0067] Pressure control mechanism: brand and model, but not limited to this product;

[0068] Gyroscope: Brand and model, but not limited to this product;

[0069] Proportional valve; SMC ITV2050-012L, but not limited to this product;

[0070] Tension cylinder: SMC SY5320-5DZ-01, but not limited to this product;

[0071] Shear cylinder: SMC MXH20-10Z, but not limited to this product;

[0072] Laser head: Songsheng LWH-IMPY-FDL-k-F80, but not limited to this product;

[0073] Heavy feed motor: Panasonic MHMF022A1A2, but not limited to this product;

[0074] Heavy-duty reducer: Nuohong precision gear NBR060, but not limited to this product;

[0075] Heavy-feed cylinder: SMC MXH20-10Z, but not limited to this product;

[0076] Re-feed wheel: Figure 7 The driving wheel and the driven wheel in the

[0077] Thermocouple: Lilin A83, but not limited to this product;

[0078] Pressure sensor: brand and model, but not limited to this product;

[0079] Distance sensor: Wigler P3PC341, but not limited to this product;

[0080] Torque sensor: Kunwei KWR758, but not limited to this product;

[0081] Torque motor: Jacobs ADR110-B113, but not limited to this product;

[0082] Thermometer: Dongben IRT-100, but not limited to this product;

[0083] Angle adjustment assembly: refers to laser head fixing plate I 1101, laser head fixing plate II 1102, laser head fixing plate III 1103, laser head fixing plate IV 1103;

[0084] Prepreg tape: Peek composite material prepreg tape.

[0085] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications based on the above description are possible. It is not possible to enumerate all embodiments here. Any obvious variations or modifications arising from the technical solution of the present invention remain within the scope of protection of the present invention.

Claims

1. A high-temperature thermoplastic composite in-situ molding device, characterized in that: include: A flange (1), a flange adapter plate (201), a connecting plate (12), and a pressure control mechanism (3), an unwinding mechanism (4), a tension mechanism (5), a guide mechanism (6), a thermocouple heating mechanism (7), a re-feeding mechanism (8), a shearing mechanism (9), a rolling mechanism (10), and a laser heating mechanism (11) installed on the connecting plate; the flange is connected to the flange adapter plate (201), and the flange adapter plate (201) is connected to the connecting plate (12); the pressure control mechanism (3) is located on the back of the connecting plate (12) and is used to provide pressure to the rolling mechanism; the unwinding mechanism (4) is located at the end of the connecting plate (12) and is used to transport the prepreg tape to the laying position of the high-temperature thermoplastic composite material; the tension mechanism (5) is located behind the unwinding mechanism and is used to adjust the tension applied to the prepreg tape; the guide mechanism (6) is located at the tension machine The guide mechanism (5) is located between the guide mechanism and the rolling mechanism (10), and is used to guide the prepreg tape from the tension mechanism to the workstation of the rolling mechanism; the thermocouple heating mechanism (7) is located above the guide mechanism and partially overlaps with the guide mechanism, and slowly heats the prepreg tape when passing through the guide mechanism by contact heating; the re-feeding mechanism (8) is located in the middle of the guide mechanism, and is used to re-transport the prepreg tape to a suitable position under the rolling mechanism after cutting the prepreg tape; the shearing mechanism (9) is located in the middle of the guide mechanism and behind the re-feeding mechanism, and is used to cut the prepreg tape when it needs to pass through a jump point; the laser heating mechanism is installed on the connecting plate through an angle adjustment component, and heats the prepreg tape to make it reach the bonding temperature; the rolling mechanism (10) is located behind the guide mechanism and at the end of the device, and is used to adhere the prepreg tape guided by the guide mechanism to the surface of the workpiece by rolling; The unwinding mechanism is connected to the fixed bottom plate via the unwinding fixed plate (405); the torque motor (403) is mounted on the motor mounting plate (402) and then fixed to the unwinding fixed plate (405) via the motor support plate (401); the torque sensor (404) is mounted on the working end of the torque motor in turn; the adapter shaft (406) is connected to the air expansion shaft (407); the outer ring of the support bearing (411) is fixed by the unwinding fixed plate (405) and the bearing stopper (410); the inner side is in contact with the adapter shaft (406) to assist in supporting the air expansion shaft; The tension mechanism is fixed on the lifting shaft (502) through the lifting roller (501) and connected to the connecting plate (12) through the shaft fixing plate I (503), so that the prepreg tape passing through the lifting roller (501) is lifted to a suitable position; one end of the fixed shaft (512) is connected to the fixing wheel I (511), and the other end is connected to the shaft fixing plate II (513) and connected to the connecting plate (12) through the shaft fixing plate II (513); similarly, the fixing wheel II (514) is connected to the fixing shaft II (515) is fixed on the connecting plate; the tension base plate (504) is connected to the connecting plate (12) through the tension base plate support seat (522), the linear guide rail (506) is fixed on both sides of the tension base plate (504), the guide rail block (505) is fixed on the right side of the linear guide rail (506), the tension cylinder (516) is connected to the tension base plate (504) through the cylinder fixing plate (517), and the floating joint (518) is connected to the tension cylinder (516) from left to right, and the transfer Flange (519), pressure sensor (520), movable shaft adapter plate III (521), movable shaft adapter plate I (509), movable shaft (508); movable roller (507) is fixed on the movable shaft (508), movable shaft adapter plate II (510) is respectively connected with movable shaft adapter plate I (509) and linear guide rail (506), so that the movable roller (507) can only move along the linear guide rail direction, and the movable roller (507) is connected with fixed wheel I (511) and fixed wheel The wheel group formed by wheel II (514) keeps the prepreg tapes above and below the movable roller (507) parallel when the prepreg tape passes through; when the tension mechanism is working, the air pressure is changed through the proportional valve so that the force output by the tension cylinder is twice the set tension, and at the same time, the pressure caused by the tension on the roller is twice the actual tension and opposite to the force output by the tension cylinder. By detecting the displacement direction of the roller under the joint action of the two, the size of the actual tension relative to the set tension can be judged and fed back to the unwinding motor to adjust the tension; The guide mechanism and the thermocouple heating mechanism are provided with grooves on the guide bottom plate I (61) and the guide bottom plate II (63) for the prepreg tape to pass through, and are connected to the heating plate I (71) by screws; one end of the guide connecting seat (62) is connected to the connecting plate (12), and the other end is connected to the guide bottom plate I (61); the guide bottom plate II (63) and the heating plate II (73) are connected by screws; the thermocouple (72) is installed on the holes of the heating plate I (71) and the heating plate II (73), and the two ends are fixed by the baffle I (74) and the baffle II (75) respectively; the heating plate I (71) and the heating plate II (73) have a convex mold with the same shape as the grooves of the guide bottom plate I (61) and the guide bottom plate II (63), which can transfer the heat of the thermocouple (72) to the prepreg tape when the prepreg tape passes through the guide plate; The rolling mechanism comprises a roller base (1001) connected to a connecting plate (12) via a base connecting block (1002); a roller (1009) connected to a roller shaft (1007) via a bearing (1008); the roller shaft (1007) is fixed to a roller adapter plate II (1005) via a top screw and is fixed to the roller base (1001) via roller adapter plate II (1005) and roller adapter plate I (1003); an air cooling fixing block (1010) is installed on the roller adapter plate I (1003) and is used to fix an air cooling pipe for cooling the roller; and an expansion block (1004) is fixed on the roller adapter plate II (1005); the rolling mechanism comprises an end pressure roller; After the laying and wrapping starts, the thermocouple heating mechanism starts to preheat the prepreg tape. At the same time, the re-feeding mechanism clamps the prepreg tape and transports it along the guide base plate I and the guide base plate II to the bottom of the end pressure roller. After reaching the specified position under the end pressure roller, the laser heating mechanism starts to heat the prepreg tape, the re-feeding mechanism stops working, and the robotic arm starts to move so that the end pressure roller presses the prepreg tape on the workpiece surface. When encountering a point that needs to be skipped, the shearing mechanism cuts the prepreg tape, and the device moves to the next point and repeats the above steps until the laying and wrapping is completed.

2. A high temperature thermoplastic composite in-situ forming device according to claim 1, characterized in that: The pressure control mechanism is fixed on the fixed base plate (202) and is a pneumatic device. A gyroscope is integrated thereon and can maintain constant pressure when the angle of the device changes. The fixed base plate (202) is connected to the connecting plate (12). One end of the flange (1) is connected to the flange adapter plate (201), and the other end can be installed with a mechanical arm. The flange adapter plate (201) is fixedly connected to the fixed base plate (202). In order to maintain strength, reinforcing ribs (203) are used to be fixedly connected to the pressure control mechanism (3) and the flange adapter plate (201) respectively.

3. A high temperature thermoplastic composite in-situ forming device according to claim 1, characterized in that: The re-feeding mechanism (8) is connected to the re-feeding reducer (802) through the re-feeding motor (801), and then fixed to the connecting plate (12) through the motor fixing plate (803) and the motor connecting plate (804). The synchronous pulley I (805) is fixed to the shaft of the re-feeding reducer (802). The left side of the passive wheel fixing plate (808) is fixed to the connecting plate (12), and the right side is fixed to the re-feeding fixing plate (812), and then fixed to the connecting plate (12) through the connecting optical axis (813). Two bearing seats (811) are installed on the passive wheel shaft (810). The left side is fixed to the synchronous pulley II (807). The re-feeding mechanism is connected to the connecting plate (12), with a passive wheel (809) fixed in the middle, which is driven by a re-feeding motor (801) through a synchronous belt (806); the re-feeding cylinder (819) is fixed on the connecting plate (12) by a cylinder support plate I (818) and a cylinder support plate II (820), and the driving wheel (814) is fixed on the driving wheel shaft (816) by a shaft sleeve I (815), and the driving wheel shaft (816) is connected to the re-feeding cylinder (819) through a driving wheel support seat (817); when the re-feeding mechanism is working, the re-feeding cylinder pushes the passive wheel to press on the surface of the driving wheel to clamp the prepreg tape in the middle, and then the re-feeding motor drives the driving wheel to rotate, and the prepreg tape is driven to move forward along the guide mechanism through friction.

4. A high temperature thermoplastic composite in-situ forming device according to claim 1, characterized in that: The shearing mechanism (9) is a shearing cylinder (901) fixed on a connecting plate (12) via a shearing fixing plate (903), a blade I (904) fixed on the shearing fixing plate (903), a blade II (905) connected to the shearing cylinder (901) via a guide seat (902), a guide hole is provided in the middle of the guide seat (902), blade II is located directly above the guide hole, and the prepreg passes through the guide hole; when the shearing mechanism is working, blade II and the guide seat (902) move downward under the drive of the shearing cylinder to press the prepreg downward, while the position of blade I remains unchanged, thereby cutting the prepreg, and then the shearing cylinder recycles it, and the prepreg returns to the position before shearing under the drive of the guide hole.

5. The high-temperature thermoplastic composite in-situ forming device according to claim 1, characterized in that: The laser heating mechanism comprises a laser head (1106) mounted on a connecting plate (12) through a laser head fixing plate I (1101), a laser head fixing plate II (1102), a laser head fixing plate III (1103), and a laser head fixing plate IV (1104), wherein the mounting holes on the laser head fixing plate II (1102) and the laser head fixing plate III (1103) are both U-shaped holes, which can adjust the focal length and incident angle of the laser head according to actual needs, and a thermometer (1105) is mounted on the laser head (1106) to monitor the prepreg tape in the heating area. In order to control the temperature of the laser head, a heat sink (1107) is installed between the laser head and the heating area. The heat sink (1107) is hinged on the expansion block (1004) through a heat sink fixing seat (1108) and a rotating connecting rod (1109). The fixing component (1110) is connected to the expansion block (1004) through screws, and one end is pressed on the rotating connecting rod through a hand screw. The angle of the heat sink (1107) can be manually adjusted by unscrewing the hand screw and then fixed to ensure that the laser beam passes through the middle of the two heat sinks, thereby ensuring that the laser does not directly irradiate a position other than the heating area.

6. A processing method for a high temperature thermoplastic composite material in-situ forming device according to claim 1, characterized in that The following steps are included: the prepreg tape reel is fixed on the unwinding mechanism, the prepreg tape is manually pulled through the roller of the tension mechanism, and the prepreg tape is sent to the re-feeding mechanism along the guide mechanism; the re-feeding wheel in the re-feeding mechanism clamps the prepreg tape, and the re-feeding motor drives the re-feeding wheel to transport the prepreg tape along the guide mechanism. When the prepreg tape is sent out from the end of the guide mechanism and reaches the end pressure roller, the re-feeding mechanism stops working; after the re-feeding mechanism stops working, the shearing mechanism cuts off the end of the prepreg tape, and the end prepreg tape slides out along the guide mechanism. At this time, the position of the prepreg tape is close to the blade of the shearing mechanism. Keep it flat; after the laying and wrapping starts, the thermocouple heating mechanism starts to preheat the prepreg tape, and at the same time the re-feeding mechanism clamps the prepreg tape and transports it along the guide base plate I and the guide base plate II to the bottom of the end pressure roller. After reaching the specified position under the end pressure roller, the laser heating mechanism starts to heat the prepreg tape, the re-feeding mechanism stops working, and the robotic arm starts to move so that the end pressure roller presses the prepreg tape on the surface of the workpiece. When encountering a point that needs to be skipped, the shearing mechanism cuts the prepreg tape, and the device moves to the next point and repeats the above steps until the laying and wrapping is completed.

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