Thermoplastic composite material double-laser laying and winding head device and processing method

Abstract

The invention discloses a thermoplastic composite material double-laser laying and winding head device and a processing method. A torque motor is connected with a composite material tape reel; one end of the tension adjusting mechanism is connected with the composite tape reel, and the other end is connected with the pressure cylinder; the support is connected with the side surface of the tension adjusting mechanism 4; the re-conveying mechanism is fixed to the middle of the tension adjusting mechanism, the first laser head and the second laser head are fixed to the bottom of the tension adjusting mechanism, and the shearing mechanism is located between the re-conveying mechanism and the pressing mechanism. The re-conveying mechanism can be used for re-conveying the composite material strip to a proper position below the pressing mechanism after the composite material strip is cut off; the shearing mechanism is used for shearing the composite material strip when the composite material strip needs to pass through the jump point; the pressing mechanism attaches the composite material strip to the surface of a workpiece in a rolling mode, the shearing mechanism shears the composite material strip, and the composite material strip is laid and wound on the workpiece to form a base material; the pressing mechanism is used for pressing the composite material strip on the base material; the side face of the pressing mechanism is connected with a pressing roller cooling water faucet. According to the invention, the thermoplastic composite material is heated through double laser, so that the reliability of interlayer bonding of the composite material can be improved, the interlayer strength of the thermoplastic composite material is improved, and the laying and winding quality and efficiency of the thermoplastic composite material are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of in-situ forming of thermoplastic composites, and specifically relates to a dual-laser laying and winding head device and processing method for thermoplastic composites, which is particularly suitable for the forming and processing of PEEK thermoplastic composites. Background Art

[0002] The composite materials applied in the aerospace field are mainly divided into thermosetting composites and thermoplastic composites; the process is to wind the strip material on the surface of the mandrel (workpiece) in a spiral winding manner through equipment and form it by means of layer-by-layer stacking. Although continuous fiber-reinforced thermosetting composites are widely used, due to the need for curing in an autoclave during the forming process, both the production efficiency is reduced and the manufacturing cost is increased; moreover, the cost of the autoclave increases exponentially with the increase of its volume, so it is impossible to produce large-sized composite components, which greatly limits its application. This makes continuous fiber-reinforced thermoplastic composites gradually become one of the preferred materials in the field of aerospace equipment manufacturing.

[0003] At present, since the thermoplastic composite components prepared by the automatic laying and winding forming method have a large number of defects compared with the components prepared by the traditional hot pressing forming method, and the interlayer strength is only 50%-90% of that of the traditional method. Among them, materials with higher performance such as PEEK carbon fiber composites, which are more difficult to form in-situ, have more prominent defects; for example, the laying quality of PEEK carbon fiber composites is not good and the laying efficiency is not high, which brings inconvenience to the forming and processing of thermoplastic composites.

[0004] The current thermosetting composites are produced by a way of winding, curing, then winding again, then curing again and so on in a reciprocating cycle. Winding requires a winding device, and curing requires a curing furnace, so the product needs to reciprocally switch between different workstations during this process, which greatly reduces the production efficiency and forming accuracy; for this reason, for thermoplastic composites, it is necessary to complete the curing process while winding, eliminating the process of switching workstations in the traditional process, which is called in-situ forming; at the same time, it is necessary to ensure the interlayer strength of the thermoplastic composite winding.

[0005] New Content

[0006] The purpose of the present invention is to provide a dual-laser laying and winding head device and processing method for thermoplastic composites, and during the forming and processing of thermoplastic composites, to provide a dual-laser assisted heating in-situ forming device, which can complete the curing process while winding, eliminating the process of switching workstations in the traditional process. By heating the thermoplastic composites with dual lasers, the reliability of the interlayer bonding of the composites can be improved, the interlayer strength of the thermoplastic composites can be increased, and the laying and winding quality and laying and winding efficiency of the thermoplastic composites can be improved.

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

[0008] A dual-laser winding head device for a thermoplastic composite material according to the present invention is characterized by comprising: a support 1, a torque motor 2, a composite material tape reel 3, a refeeding mechanism 5, a first laser head 7, a second laser head 8, a tension adjusting mechanism 4, a cutting mechanism 6, and a pressing mechanism 9. The torque motor 2 is connected to the composite material tape reel 3 and can convey the composite material tape to the winding position of the thermoplastic composite material. One end of the tension adjusting mechanism 4 is connected to the composite material tape reel 3, and the other end is connected to the pressing mechanism 9. The support 1 is connected to the side of the tension adjusting mechanism 4. The refeeding mechanism 5 is fixed in the middle of the tension adjusting mechanism 4. The first laser head 7 and the second laser head 8 are fixed at the bottom of the tension adjusting mechanism 4. The cutting mechanism 6 is located between the refeeding mechanism and the pressing mechanism 9. Among them, the tension adjusting mechanism 4 can be used to adjust the tension applied to the composite material tape. The refeeding mechanism 5 can be used to re-convey the composite material tape to a suitable position under the pressing mechanism 9 after the composite material tape is cut. The cutting mechanism 6 is used to cut the composite material tape when a skip point needs to be passed. The pressing mechanism 9 is located behind the cutting mechanism 6 at the end of the device. The composite material tape is conveyed from the tape reel to under the pressing mechanism 9. The cutting mechanism 6 cuts the composite material tape and winds it onto the workpiece to form a base material. The pressing mechanism 9 then presses the composite material tape onto the base material in a rolling manner, so that there is tension on the composite material tape to prevent the composite material tape from wrinkling and causing defects. The first laser head 7 is used for heating the base material. The second laser head 8 is used for heating the composite material tape so that the composite material tape and the base material can reach the bonding temperature. A pressing roller cooling water faucet is connected to the side of the pressing mechanism 9, and water is used to cool the pressing roller, which can extend the service life of the pressing roller.

[0009] Among them, the tension adjusting mechanism 4 is fixed on the lifting shaft 502 through the lifting roller 501, and is connected to the connecting plate 25 through the shaft fixing plate I 503, so that the composite material strip on the lifting roller 501 is lifted to a proper position; one end of the fixed shaft I 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 25 through the shaft fixing plate II 513; similarly, the fixed wheel II 514 is fixed on the connecting plate through the fixed shaft II 515; the tension bottom plate 504 is connected to the connecting plate 25 through the tension bottom plate support seat 522, the linear guide rails 506 are fixed on both sides of the tension bottom 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 bottom plate 504 through the cylinder fixing plate 517, and on the tension cylinder 516, the floating joint 518, the adapter flange 519, the wheel type tension sensor 520, the movable shaft adapter plate III 521, the movable shaft adapter plate I 509, and the movable shaft 508 are connected in sequence from left to right; the movable roller 507 is fixed on the movable shaft 508, and the movable shaft adapter plate II 510 is respectively connected to the movable shaft adapter plate I 509 and the linear guide rail 506, so that the movable roller 507 can only move along the direction of the linear guide rail, and when the composite material strip passes through the wheel set composed of the movable roller 507 and the fixed wheel I 511 and the fixed wheel II 514, the composite material strips above and below the movable roller 507 are kept parallel; when the tension adjusting mechanism 4 works, 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 received by 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 combined action of the two, the size of the actual tension relative to the set tension can be judged and fed back to the torque motor (2) to adjust the tension.

[0010] Among them, the refeeding mechanism 5 is connected to the refeeding speed reducer 802 through the refeeding motor 801, and then fixed to the connecting plate 25 through the motor fixing plate 803 and the motor connecting plate 804. The synchronous pulley I 805 is fixed on the shaft of the refeeding speed reducer 802. The left side of the driven wheel fixing plate 808 is fixed on the connecting plate 25, and the right side is fixedly connected to the refeeding fixing plate 812, and then fixed to the connecting plate 25 through the connecting optical axis 813. Two bearing seats 811 are installed on it. The driven wheel shaft 810 passes through the two bearing seats 811, and the left side is fixedly connected to the synchronous pulley II 807, and the driven wheel 809 is fixed in the middle. It is driven by the refeeding motor 801 through the synchronous belt 806; the refeeding cylinder 819 is fixed to the connecting plate 25 by the cylinder support plate I 818 and the cylinder support plate II 820. The driving wheel 814 is fixed on the driving wheel shaft 816 by the bushing I 815. The driving wheel shaft 816 is connected to the refeeding cylinder 819 through the driving wheel support seat 817; when the refeeding mechanism works, the refeeding cylinder pushes the driven wheel to press on the surface of the driving wheel to clamp the composite material strip in the middle, and then the refeeding motor drives the driving wheel to rotate, and drives the composite material strip to move forward through friction.

[0011] Among them, the shearing mechanism 9 is that the shearing cylinder 901 is fixed to the connecting plate 25 through the shearing fixing plate 903. The blade I 904 is fixed on the shearing fixing plate 903. The blade II (905) is connected to the shearing cylinder 901 through the guide seat 902. There is a guide hole in the middle of the guide seat 902. The blade II is located directly above the guide hole. The composite material strip passes through the guide hole; when the shearing mechanism works, the blade II and the guide seat (902) move downward under the drive of the shearing cylinder, pressing down the composite material strip, and the position of the blade I remains unchanged, so as to cut the composite material strip, and then the shearing cylinder retracts, and the composite material strip returns to the position before shearing under the drive of the guide hole.

[0012] Among them, the pressing mechanism 9 includes: a pressing cylinder, a guide rail I, a guide rail II, a fixing plate, a fixing seat, a pressing roller, a pressing roller mounting seat, and a roller cooling water joint. The pressing cylinder is installed on the fixing seat, and the guide rail I and the guide rail II are provided on both sides. The guide rail I and the guide rail II are fixed on both sides by the fixing plate. A pressing roller mounting seat is connected below the fixing seat, and the pressing roller is installed below the pressing roller mounting seat; the roller cooling water joint is installed on the side of the pressing roller; the pressing cylinder is controlled by a proportional valve to ensure a constant pressure and can be infinitely adjusted through the control system.

[0013] Among them, the laser head 17 is installed in the upper frame (19), the upper frame 19 is connected to the bottom of the tension adjustment mechanism 4, the laser head 28 is installed in the lower frame 20, the upper frame 19 and the lower frame 20 are connected by the left frame connecting plate 21 and the right frame connecting plate 22, the left frame connecting plate 21 has slide grooves on the upper and lower parts, the tail of the laser head 17 can be inserted into the slide groove on the upper part of the left frame connecting plate 21, and the tail of the laser head 28 can be inserted into the slide groove on the lower part of the left frame connecting plate 21; by adjusting the screws and bolts on the slide groove, the laser output angles of the laser head 17 and the laser head 28 can be adjusted, so as to ensure that the laser head 17 is aligned with the substrate for heating; the laser head 28 is aligned with the composite material strip for heating.

[0014] A processing method of a thermoplastic composite material double laser laying wrapping head device of the present invention comprises the following steps:

[0015] The composite material reel 3 is connected to the torque motor, and can pull the composite material strip through the movable roller 507, the fixed roller I 511, and the fixed roller II 514 of the tension adjustment mechanism, and feed the composite material strip into the re-feeding mechanism;

[0016] The re-feeding wheel in the re-feeding mechanism clamps the composite material strip, and the re-feeding motor drives the re-feeding wheel to transport the composite material strip. When the composite material strip is sent out from the end of the re-feeding mechanism and reaches the clamping mechanism (9), the re-feeding mechanism stops working;

[0017] After the re-feeding mechanism stops working, the shearing mechanism shears off the end of the composite material strip, and the composite material strip at the end slides out. At this time, the position of the composite material strip is kept flush with the blade of the shearing mechanism;

[0018] After the laying and winding begins, the heating stage of the composite material strip is started: the re-feeding mechanism clamps the composite material strip and conveys it to the bottom of the clamping roller of the end clamping mechanism 9. After reaching the specified position under the end clamping roller, the laser head 2 8 starts to heat the composite material strip. The clamping mechanism 9 adheres the composite material strip to the surface of the workpiece by rolling. The shearing mechanism 6 cuts the composite material strip and lays it on the workpiece to form a substrate. The laser head 1 7 starts to heat the substrate laid on the workpiece. At the same time, the laser head 2 8 again conveys it to the re-feeding mechanism. The composite material strip is heated, and the two laser heads respectively use temperature sensors to detect the temperature and perform closed-loop control to ensure that the composite material strip and the substrate reach the temperature required for bonding, so that the composite material strip can be firmly laid and wrapped on the substrate; the clamping cylinder of the clamping mechanism 9 is controlled by a proportional valve to ensure constant pressure, and the pressure can be adjusted by an industrial computer. The clamping roller at the end presses the composite material strip on the surface of the workpiece. When encountering a point that needs to be skipped, the shearing mechanism cuts the composite material strip, and the device moves to the next point and repeats the above steps until the laying and wrapping is completed.

[0019] The advantages of the present invention are:

[0020] 1. In the present invention, a torque motor is used as the tension output device. Compared with the existing magnetic powder brake for tension output, when the tension suddenly changes, especially when it decreases, it can play a role in reverse rotation to suppress tension fluctuations, improving the accuracy of tension control.

[0021] 2. The present invention uses a dual-laser heating method. Laser head 7 starts to heat the base material laid on the workpiece; laser head 8 heats the composite material strip conveyed by the refeeding mechanism. Each of the two laser heads uses a temperature sensor to detect the temperature and performs closed-loop control to ensure that both the composite material strip and the base material reach the temperature required for bonding. The pressing cylinder of the pressing mechanism 9 is controlled by a proportional valve to ensure a constant pressure, and the pressure can be adjusted through an industrial control computer. The pressing roller at the end presses the composite material strip onto the surface of the workpiece.

[0022] 3. Since the composite material strip and the base material have different thicknesses and initial temperatures, using one laser to irradiate and heat two areas cannot meet the requirement that both areas reach the same temperature for bonding of the composite material, resulting in poor quality during the bonding process. The present invention uses 2 lasers to separately control the temperatures of the composite material strip and the base material, both reaching the temperature required for bonding and ensuring the process quality.

[0023] 4. A pressing roller cooling water faucet is connected to the side of the pressing mechanism 9 of the present invention. Water is used to cool the pressing roller, which can extend the service life of the pressing roller. Brief Description of the Drawings

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 is an assembly schematic diagram of the dual laser heads of the present invention;

[0026] Figure 3 is a three-dimensional structural schematic diagram of the tension adjustment mechanism;

[0027] Figure 4 is a three-dimensional structural schematic diagram of the refeeding mechanism;

[0028] Figure 5 is an assembly schematic diagram of the refeeding mechanism;

[0029] Figure 6 is an assembly schematic diagram of the shearing mechanism;

[0030] Figure 7 is a schematic diagram of the pressing mechanism;

[0031] Figure 8 is an electrical control block diagram of the present invention.

[0032] Reference numerals: 1, support; 2, torque motor;; 3, composite material tape reel; 4, tension adjusting mechanism; 5, refeeding mechanism; 6, shearing mechanism; 7, laser head 1; 8, laser head 2; 9, pressing mechanism; 10, pressing roller; 11, laser beam 1; 12, laser beam 2; 13, composite material tape; 14, base material; 15, guide rail 1; 16, guide rail 2; 17, roller cooling water joint; 18, pressing cylinder; 19, upper frame; 20, lower frame; 21, left frame connecting plate; 22, right frame connecting plate; 23, fixed seat; 24, pressing roller mounting seat;

[0033] 501, lifting roller; 502, lifting shaft; 503, shaft fixing plate I; 504, tension bottom plate; 505, guide rail stopper; 506, linear guide rail; 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, wheel type tension sensor; 521, movable shaft adapter plate III; 522, tension bottom plate support seat; 25, connecting plate;

[0034] 801, refeeding motor; 802, refeeding speed reducer; 803, motor fixing plate; 804, motor connecting plate; 805, synchronous pulley I;

[0035] 806, synchronous belt; 807, synchronous pulley II; 808, driven wheel fixing plate; 809, driven wheel; 810, driven wheel shaft; 811, bearing seat; 812, refeeding fixing plate; 813, connecting optical axis; 814, driving wheel; 815, bushing I; 816, driving wheel shaft; 817, driving wheel support seat; 818, cylinder support plate I; 819, refeeding cylinder; 820, cylinder support plate II;

[0036] 901, shearing cylinder; 902, guide seat; 903, shearing fixing plate; 904, blade I; 905, blade II. Detailed implementation mode

[0037] The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0038] See Figure 1-8, a dual-laser winding head device for a thermoplastic composite material according to the present invention, characterized by comprising: a support 1, a torque motor 2, a composite material tape reel 3, a refeeding mechanism 5, a first laser head 7, a second laser head 8, a tension adjusting mechanism 4, a cutting mechanism 6, and a pressing mechanism 9. The torque motor 2 is connected to the composite material tape reel 3 and can convey the composite material tape to the winding position of the thermoplastic composite material. One end of the tension adjusting mechanism 4 is connected to the composite material tape reel 3, and the other end is connected to the pressing mechanism 9. The support 1 is connected to the side of the tension adjusting mechanism 4. The refeeding mechanism 5 is fixed in the middle of the tension adjusting mechanism 4. The first laser head 7 and the second laser head 8 are fixed at the bottom of the tension adjusting mechanism 4. The cutting mechanism 6 is located between the refeeding mechanism and the pressing mechanism 9. Among them, the tension adjusting mechanism 4 can be used to adjust the tension applied to the composite material tape. The refeeding mechanism 5 can be used to re-convey the composite material tape to a suitable position under the pressing mechanism 9 after cutting the composite material tape. The cutting mechanism 6 is used to cut the composite material tape when passing through a skip point. The pressing mechanism 9 is located behind the cutting mechanism 6 at the end of the device. The composite material tape is conveyed from the tape reel to under the pressing mechanism 9. The cutting mechanism 6 cuts the composite material tape and winds it onto the workpiece to form a base material. The pressing mechanism 9 then presses the composite material tape onto the base material in a rolling manner, so that there is tension on the composite material tape to prevent the composite material tape from wrinkling and causing defects. The first laser head 7 is used for heating the base material. The second laser head 8 is used for heating the composite material tape so that the composite material tape and the base material can reach the bonding temperature. A pressing roller cooling water faucet is connected to the side of the pressing mechanism 9, and water is used to cool the pressing roller, which can extend the service life of the pressing roller.

[0039] Among them, the tension adjusting mechanism 4 is fixed on the lifting shaft 502 through the lifting roller 501, and is connected to the connecting plate 25 through the shaft fixing plate I 503, so that the composite material strip on the lifting roller 501 is lifted to a proper position; one end of the fixed shaft I 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 25 through the shaft fixing plate II 513; similarly, the fixed wheel II 514 is fixed on the connecting plate through the fixed shaft II 515; the tension bottom plate 504 is connected to the connecting plate 25 through the tension bottom plate support seat 522, the linear guide rails 506 are fixed on both sides of the tension bottom 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 bottom plate 504 through the cylinder fixing plate 517, on the tension cylinder 516, the floating joint 518, the adapter flange 519, the wheel type tension sensor 520, the movable shaft adapter plate III 521, the movable shaft adapter plate I 509 and the movable shaft 508 are connected in sequence from left to right; the movable roller 507 is fixed on the movable shaft 508, and the movable shaft adapter plate II 510 is respectively connected to the movable shaft adapter plate I 509 and the linear guide rail 506, so that the movable roller 507 can only move along the direction of the linear guide rail, and when the composite material strip passes through the wheel set composed of the movable roller (507) and the fixed wheel I 511 and the fixed wheel II 514, the composite material strips above and below the movable roller 507 are kept parallel; when the tension adjusting mechanism 4 works, 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 received by 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 combined action of the two, the size of the actual tension relative to the set tension can be judged and fed back to the torque motor (2) to adjust the tension.

[0040] Among them, the refeeding mechanism 5 is connected to the refeeding reduction gear 802 through the refeeding motor 801, and then fixed to the connecting plate 25 through the motor fixing plate 803 and the motor connecting plate 804. The synchronous pulley I 805 is fixed on the shaft of the refeeding reduction gear 802. The left side of the driven wheel fixing plate 808 is fixed to the connecting plate 25, and the right side is fixedly connected to the refeeding fixing plate 812, and then fixed to the connecting plate 25 through the connecting optical axis 813. Two bearing seats 811 are installed on it. The driven wheel shaft 810 passes through the two bearing seats 811, and the left side is fixedly connected to the synchronous pulley II 807, and the driven wheel 809 is fixed in the middle. It is driven by the refeeding motor 801 through the synchronous belt 806; the refeeding cylinder 819 is fixed to the connecting plate 25 by the cylinder support plate I 818 and the cylinder support plate II 820. The driving wheel 814 is fixed on the driving wheel shaft 816 by the bushing I 815, and the driving wheel shaft 816 is connected to the refeeding cylinder 819 through the driving wheel support seat 817; when the refeeding mechanism works, the refeeding cylinder pushes the driven wheel to press on the surface of the driving wheel to clamp the composite material strip in the middle, and then the refeeding motor drives the driving wheel to rotate, and drives the composite material strip to move forward through friction.

[0041] Among them, the shearing mechanism 9 is that the shearing cylinder 901 is fixed to the connecting plate 25 through the shearing fixing plate 903. The blade I 904 is fixed to the shearing fixing plate 903. The blade II (905) is connected to the shearing cylinder 901 through the guide seat 902. There is a guide hole in the middle of the guide seat 902. The blade II is located directly above the guide hole. The composite material strip passes through the guide hole; when the shearing mechanism works, the blade II and the guide seat (902) move downward under the drive of the shearing cylinder, pressing down the composite material strip, and the position of the blade I remains unchanged, so as to cut the composite material strip, and then the shearing cylinder retracts, and the composite material strip returns to the position before shearing under the drive of the guide hole.

[0042] Among them, the pressing mechanism 9 includes: a pressing cylinder, a guide rail I, a guide rail II, a fixing plate, a fixing seat, a pressing roller, a pressing roller mounting seat, and a roller cooling water joint. The pressing cylinder is installed on the fixing seat, and the guide rail I and the guide rail II are provided on both sides. The guide rail I and the guide rail II are fixed on both sides by the fixing plate. The fixing seat is connected with the pressing roller mounting seat below, and the pressing roller is installed below the pressing roller mounting seat; the roller cooling water joint is installed on the side of the pressing roller; the pressing cylinder is controlled by a proportional valve to ensure a constant pressure and can be adjusted steplessly through the control system.

[0043] Among them, the first laser head 7 is installed inside the upper frame (19), and the upper frame 19 is connected to the bottom of the tension adjusting mechanism 4. The second laser head 8 is installed inside the lower frame 20. The upper frame 19 and the lower frame 20 are connected by a left frame connecting plate 21 and a right frame connecting plate 22. The upper and lower parts of the left frame connecting plate 21 are provided with chutes. The tail of the first laser head 7 can be inserted into the upper chute of the left frame connecting plate 21, and the tail of the second laser head 8 can be inserted into the lower chute of the left frame connecting plate 21. By adjusting with screws and bolts on the chute, the laser output angles of the first laser head 7 and the second laser head 8 can be adjusted, so as to ensure that the first laser head 7 is aligned with the heating on the substrate; the second laser head 8 is aligned with the heating on the composite material strip.

[0044] A processing method of a thermoplastic composite double laser filament winding head device of the present invention has the following steps:

[0045] The composite material tape reel 3 is connected to the torque motor, and can pull the composite material strip through the movable roller 507, the fixed roller I 511, and the fixed roller II 514 of the tension adjusting mechanism, and feed the composite material strip into the refeeding mechanism;

[0046] In the refeeding mechanism, the refeeding wheel clamps the composite material strip, and drives the refeeding wheel through the refeeding motor to convey the composite material strip. When the composite material strip is sent out from the end of the refeeding mechanism and reaches the pressing mechanism (9), the refeeding mechanism stops working;

[0047] After the refeeding mechanism stops working, the shearing mechanism cuts off the end of the composite material strip, and the end composite material strip slides out. At this time, the position of the composite material strip is flush with the blade of the shearing mechanism;

[0048] After the filament winding starts, the heating stage of the composite material strip is started: the refeeding mechanism clamps the composite material strip and conveys it to the lower part of the pressing roller of the end pressing mechanism 9. After reaching the designated position below the end pressing roller, the second laser head 8 starts to heat the composite material strip. The pressing mechanism 9 adheres the composite material strip to the surface of the workpiece by rolling. The shearing mechanism 6 cuts off the composite material strip and winds it onto the workpiece to form a substrate. The first laser head 7 starts to heat the substrate wound on the workpiece; at the same time, the second laser head 8 heats the composite material strip conveyed by the refeeding mechanism again. The two laser heads respectively use temperature sensors to detect the temperature and perform closed-loop control to ensure that both the composite material strip and the substrate reach the temperature required for bonding, so that the composite material strip can be firmly wound onto the substrate; the pressing cylinder of the pressing mechanism 9 is controlled by a proportional valve to ensure a constant pressure, and the pressure can be adjusted through an industrial control computer. The pressing roller at the end presses the composite material strip on the surface of the workpiece. When encountering a point that needs to be skipped, the shearing mechanism cuts off the composite material strip, and the device moves to the next point and repeats the above steps until the filament winding is completed.

[0049] If the workpiece is cylindrical, it can drive the workpiece to cooperate with the winding of the composite material strip by means of a motor.

[0050] Industrial control computer: Nordica NP6111-JH2, but not limited to this product;

[0051] Electrical products are mainly controlled by PLC; PLC: The one used is Beckhoff EK1100, but not limited to this product;

[0052] Clamping cylinder: SMC JCDQA50-25, but not limited to this product;

[0053] Proportional valve; SMC ITV2050-012L, but not limited to this product;

[0054] Tension cylinder: SMC SY5320-5DZ-01, but not limited to this product;

[0055] Shearing cylinder: SMC MXH20-10Z, but not limited to this product;

[0056] Laser head: SongSheng LWH-IMPY-FDL-k-F80, but not limited to this product;

[0057] Rewind motor: Panasonic MHMF022A1A2, but not limited to this product;

[0058] Rewind reducer: Nohong Precision Gear NBR060, but not limited to this product;

[0059] Rewind cylinder: SMC MXH20-10Z, but not limited to this product;

[0060] Rewind wheel: refers to Figure 5 the driving wheel and the driven wheel in

[0061] Wheel type tension sensor: SMC CRS-50-Y5, but not limited to this product;

[0062] Torque motor: Yokogawa ADR110-B113, but not limited to this product;

[0063] Motor: Yokogawa ADR110-B113, but not limited to this product;

[0064] Temperature sensor: Dongben IRT-100, but not limited to this product;

[0065] Composite material strip: Peek composite material prepreg strip.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to enumerate all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A dual-laser filament winding head device for thermoplastic composite materials, characterized in that Comprising: A support (1), a torque motor (2), a composite material tape reel (3), a refeeding mechanism (5), a first laser head (7), a second laser head (8), a tension adjusting mechanism (4), a cutting mechanism (6), and a pressing mechanism (9). The torque motor (2) is connected to the composite material tape reel (3) and can convey the composite material tape to the winding position of the thermoplastic composite material. One end of the tension adjusting mechanism (4) is connected to the composite material tape reel (3), and the other end is connected to the pressing mechanism (9). The support (1) is connected to the side of the tension adjusting mechanism (4). The refeeding mechanism (5) is fixed in the middle of the tension adjusting mechanism (4). The first laser head (7) and the second laser head (8) are fixed at the bottom of the tension adjusting mechanism (4). The cutting mechanism (6) is located between the refeeding mechanism and the pressing mechanism (9). Among them, the tension adjusting mechanism (4) can be used to adjust the tension applied to the composite material tape. The refeeding mechanism (5) can be used to re-convey the composite material tape to a suitable position under the pressing mechanism (9) after the composite material tape is cut. The cutting mechanism (6) is used to cut the composite material tape when passing through a skip point. The pressing mechanism (9) is located behind the cutting mechanism (6) at the end of the device. The composite material tape is conveyed from the tape reel to under the pressing mechanism (9). The cutting mechanism (6) cuts the composite material tape and winds it onto the workpiece to form a base material. The pressing mechanism (9) then presses the composite material tape onto the base material in a rolling manner, so that there is tension on the composite material tape to prevent the composite material tape from wrinkling and causing defects. The first laser head (7) is used for heating the base material. The second laser head (8) is used for heating the composite material tape so that the composite material tape and the base material can reach the bonding temperature. A pressing roller cooling water faucet is connected to the side of the pressing mechanism (9), and water is used to cool the pressing roller, which can extend the service life of the pressing roller.

2. The dual laser filament winding head device for thermoplastic composite materials according to claim 1, characterized in that, The tension adjusting mechanism (4) is fixed on the lifting shaft (502) through the lifting roller (501) and is connected to the connecting plate (25) through the shaft fixing plate I (503), so that the composite material tape on the lifting roller (501) is lifted to a suitable position. One end of the fixed shaft I (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 (25) through the shaft fixing plate II (513). Similarly, the fixed wheel II (514) is fixed on the connecting plate through the fixed shaft II (515). The tension bottom plate (504) is connected to the connecting plate (25) through the tension bottom plate support seat (522). The linear guide rails (506) are fixed on both sides of the tension bottom 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 bottom plate (504) through the cylinder fixing plate (517). On the tension cylinder (516), a floating joint (518), an adapter flange (519), a wheel type tension sensor (520), a movable shaft adapter plate III (521), and a movable shaft adapter plate I are connected in sequence from left to right (509), movable shaft (508); the movable roller (507) is fixed on the movable shaft (508), and the movable shaft adapter plate II (510) is respectively connected to the movable shaft adapter plate I (509) and the linear guide (506), so that the movable roller (507) can only move along the direction of the linear guide, and when the composite material strip passes through the wheel set composed of the movable roller (507), the fixed wheel I (511) and the fixed wheel II (514), the composite material strips above and below the movable roller (507) are kept parallel; when the tension adjusting mechanism (4) works, the air pressure is changed through the proportional valve, so that the force output by the tension cylinder is twice the set tension. At the same time, 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 combined action of the two, the size of the actual tension relative to the set tension can be judged and fed back to the torque motor (2) to adjust the tension.

3. A dual-laser filament winding head device for thermoplastic composite materials according to claim 1, characterized in that, The refeeding mechanism (5) is connected to the refeeding reducer (802) through the refeeding motor (801), and then fixed to the connecting plate (25) through the motor fixing plate (803) and the motor connecting plate (804). The synchronous pulley I (805) is fixed on the shaft of the refeeding reducer (802). The left side of the driven wheel fixing plate (808) is fixed to the connecting plate (25), and the right side is fixedly connected to the refeeding fixing plate (812), and then fixed to the connecting plate (25) through the connecting optical axis (813). Two bearing seats (811) are installed on it. The driven wheel shaft (810) passes through the two bearing seats (811), and the left side is fixedly connected to the synchronous pulley II (807), and a driven wheel (809) is fixed in the middle. It is driven by the refeeding motor (801) through the synchronous belt (806); the refeeding cylinder (819) is fixed to the connecting plate (25) by the cylinder support plate I (818) and the cylinder support plate II (820). The driving wheel (814) is fixed on the driving wheel shaft (816) by the bushing I (815), and the driving wheel shaft (816) is connected to the refeeding cylinder (819) through the driving wheel support seat (817); when the refeeding mechanism works, the refeeding cylinder pushes the driven wheel to press on the surface of the driving wheel to clamp the composite material strip in the middle, and then the refeeding motor drives the driving wheel to rotate, and drives the composite material strip to move forward through friction.

4. A dual-laser filament winding head device for thermoplastic composite materials according to claim 1, characterized in that, The shearing mechanism (9) is that the shearing cylinder (901) is fixed to the connecting plate (25) through the shearing fixing plate (903). The blade I (904) is fixed on the shearing fixing plate (903). The blade II (905) is connected to the shearing cylinder (901) through the 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. The composite material strip passes through the guide hole; when the shearing mechanism works, the blade II and the guide seat (902) move downward under the drive of the shearing cylinder, pressing down the composite material strip, and the position of the blade I remains unchanged, so as to cut the composite material strip, and then the shearing cylinder retracts, and the composite material strip returns to the position before shearing under the drive of the guide hole.

5. A dual-laser filament winding head device for thermoplastic composite materials according to claim 1, characterized in that, The clamping mechanism (9) comprises: a clamping cylinder, a guide rail 1, a guide rail 2, a fixing plate, a fixing seat, a clamping roller, a clamping roller mounting seat, and a roller cooling water connector. The clamping cylinder is mounted on the fixing seat, and is provided with a guide rail 1 and a guide rail 2 on both sides. The guide rails 1 and 2 are fixed on both sides by fixing plates. A clamping roller mounting seat is connected below the fixing seat, and the clamping roller is mounted below the clamping roller mounting seat. The roller cooling water connector is mounted on the side of the clamping roller. The clamping cylinder is controlled by a proportional valve to ensure constant pressure, and the pressure can be infinitely adjusted through a control system.

6. The dual-laser filament winding head device for thermoplastic composite materials according to claim 1, characterized in that, The laser head 1 (7) is installed in an upper frame (19), the upper frame (19) is connected to the bottom of the tension adjustment mechanism (4), the laser head 2 (8) is installed in a lower frame (20), the upper frame (19) and the lower frame (20) are connected by a left frame connecting plate (21) and a right frame connecting plate (22), the left frame connecting plate (21) has a slide groove at the upper and lower parts, the tail of the laser head 1 (7) can be inserted into the slide groove at the upper part of the left frame connecting plate (21), and the tail of the laser head 2 (8) can be inserted into the slide groove at the lower part of the left frame connecting plate (21); by adjusting the screw and the bolt on the slide groove, the laser output angle of the laser head 1 (7) and the laser head 2 (8) can be adjusted, so as to ensure that the laser head 1 (7) is aligned with the substrate for heating; the laser head 2 (8) is aligned with the composite material strip for heating.

7. The processing method of a dual-laser filament winding head device for thermoplastic composite materials according to claim 1, characterized in that There are the following steps: The composite material reel (3) is connected to the torque motor and can pull the composite material strip through the movable roller (507), fixed roller I (511) and fixed roller II (514) of the tension adjustment mechanism to feed the composite material strip into the re-feeding mechanism; The re-feeding wheel in the re-feeding mechanism clamps the composite material strip, and the re-feeding motor drives the re-feeding wheel to transport the composite material strip. When the composite material strip is sent out from the end of the re-feeding mechanism and reaches the clamping mechanism (9), the re-feeding mechanism stops working; After the re-feeding mechanism stops working, the shearing mechanism shears off the end of the composite material strip, and the composite material strip at the end slides out. At this time, the position of the composite material strip is kept flush with the blade of the shearing mechanism; After the winding starts, the heating stage of the composite material strip is initiated: the rewinding mechanism clamps the composite material strip and conveys it under the pressing roller of the end pressing mechanism (9). After reaching the designated position under the end pressing roller, the second laser head (8) starts to heat the composite material strip. The pressing mechanism (9) attaches the composite material strip to the workpiece surface by rolling. The cutting mechanism (6) cuts the composite material strip and winds it onto the workpiece to form the base material. The first laser head (7) starts to heat the base material wound on the workpiece. At the same time, the second laser head (8) heats the composite material strip conveyed by the rewinding mechanism again. The two laser heads respectively use temperature sensors to detect the temperature and perform closed-loop control to ensure that both the composite material strip and the base material reach the temperature required for bonding, so that the composite material strip can be firmly wound onto the base material. The pressing cylinder of the pressing mechanism (9) is controlled by a proportional valve to ensure a constant pressure and can adjust the pressure through an industrial control computer. The end pressing roller presses the composite material strip on the workpiece surface. When encountering a point to be skipped, the cutting mechanism cuts the composite material strip. After the device moves to the next point, the above steps are repeated until the winding is completed.

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