Retraction device for fiber placement head and fiber placement machine

Abstract

The present invention provides a heavy-feeding device for a wire laying head and a wire laying machine, which relates to the technical field of composite material laying devices, and includes a driving motor, a first roller assembly, a second roller assembly, a first rotating wheel assembly, and a second rotating wheel assembly; the driving motor is fixed to the frame of the wire laying head, the output end of the driving motor is connected to the first roller assembly in a transmission manner, the first roller assembly and the second roller assembly are arranged in parallel, the second roller assembly rotates following the first roller assembly, a first rotating wheel assembly is arranged on one side of the first roller assembly, a second rotating wheel assembly is arranged on one side of the second roller assembly, one side of the wire bundle is clamped between the first roller assembly and the first rotating wheel assembly, and the other side of the wire bundle is clamped between the second roller assembly and the second rotating wheel assembly. The present invention solves the technical problem in the prior art that when two rollers are rotated and pressed down, and a wire material has a defect, the laying can only be stopped, and achieves the technical effect of being able to control each wire bundle individually.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material laying devices, and more particularly to a refeeding device for a fiber placement head and a fiber placement machine. Background Art

[0002] Due to the characteristics of light weight, high strength, and high stiffness, carbon fiber composite materials are becoming increasingly important in modern industry. In the aerospace field, carbon fiber composite materials are used to manufacture structural components of aircraft and satellites to reduce weight and improve fuel efficiency. In the automotive industry, they are used to manufacture lightweight body and chassis components to improve fuel economy and performance. In addition, carbon fiber composite materials have also been widely used in the fields of sports equipment, wind turbine blades, and building reinforcement.

[0003] With the growth of the demand for carbon fiber composite materials, the traditional manufacturing methods of manual layup and autoclave curing can no longer meet the requirements of large-scale production. Therefore, automatic laying of composite materials has emerged. The fiber placement machine can achieve precise cutting and laying of prepreg tows, improving production efficiency and product quality. The main working process of the fiber placement machine includes: the feeding system sends the prepreg out from the reel and maintains appropriate tension, the fiber placement head lays the prepreg on the mold along a predetermined path, and at the required places, the cutting system cuts off the prepreg and cures it.

[0004] In the prior art, the refeeding device in the front fiber placement head of the fiber placement machine generally uses a motor to directly rotate and press multiple tows with two rollers, so that multiple tows are laid down simultaneously. In this case, once a defect occurs during the laying of a certain wire, the fiber placement machine has to be paused and cannot continue laying, affecting work efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a refeeding device for a fiber placement head and a fiber placement machine, so as to alleviate the technical problem that when two rollers directly rotate and press multiple tows and a defect occurs in a certain wire, laying can only be stopped in the prior art.

[0006] The present invention provides a refeeding device for a fiber placement head, including: a driving motor, a first roller assembly, a second roller assembly, a first runner assembly, and a second runner assembly;

[0007] The driving motor is fixed on the frame of the fiber placement head. The output end of the driving motor is in transmission connection with the first roller assembly. The first roller assembly and the second roller assembly are arranged in parallel. The second roller assembly rotates following the first roller assembly. A first runner assembly is arranged on one side of the first roller assembly, and a second runner assembly is arranged on one side of the second roller assembly. One side of the tows is clamped between the first roller assembly and the first runner assembly, and the other side of the tows is clamped between the second roller assembly and the second runner assembly.

[0008] Further, the driving motor includes a motor body, a first synchronous wheel, a thrust bearing and a synchronous belt;

[0009] The motor body is fixed on the frame of the wire laying head, and the output shaft of the motor body is sleeved with a first synchronous wheel and a thrust bearing, and the first synchronous wheel is transmission-connected with the first roller assembly through a synchronous belt.

[0010] Further, the first roller assembly includes a first roller body, a second synchronous wheel and a first transmission gear;

[0011] One end of the first roller body is sleeved with a second synchronous wheel, and the other end of the first roller body is sleeved with a first transmission gear. The first roller body and the second roller assembly are arranged in parallel, the second synchronous wheel is transmission-connected to the output end of the driving motor, and the first transmission gear drives the second roller assembly to rotate.

[0012] Further, the second roller assembly includes a second roller body and a second transmission gear;

[0013] The second roller body is arranged in parallel with the first roller body, and one end of the second roller body is meshed with the first transmission gear and connected with the second transmission gear.

[0014] Furthermore, outer ends of the second synchronous wheel, the first transmission gear and the second transmission gear along the horizontal axis are all provided with sleeves to prevent sliding.

[0015] Furthermore, the transmission ratio between the first transmission gear and the second transmission gear is 1:1.

[0016] Further, the first rotating wheel assembly includes a bracket, a first U-shaped bracket, a first pin shaft, a first ball pin, a first rotating wrench, a valve island, a cylinder, a water drop plate and a first rotating wheel;

[0017] The bracket is arranged on the side of the first roller assembly, and a first U-shaped bracket is provided at both ends of the bracket. The first pin shaft is clamped in the groove of the first U-shaped bracket, one end of the first pin shaft is fixedly connected to the first ball pin, and the other end of the first pin shaft is connected to the first rotating wrench. A valve island is provided at the top of the bracket, and the valve island is pneumatically connected to several cylinders through pipelines. A teardrop-shaped plate is hinged at the output end of each cylinder, and a first rotating wheel is provided between two adjacent teardrop-shaped plates. The filament bundle is clamped between the first rotating wheel and the first roller assembly.

[0018] Furthermore, the bottom end of the bracket is in a hook shape, and the end of the water drop-shaped plate is placed at the hook at the bottom end of the bracket.

[0019] Further, the second rotating wheel assembly includes a support block, a second U-shaped bracket, a second pin shaft, a second ball pin, a second rotating wrench, a pneumatic push rod, a fixing plate and a second rotating wheel;

[0020] The support block is arranged on the side of the second roller assembly, and a second U-shaped bracket is provided at both ends of the support block. The second pin shaft is clamped in the groove of the second U-shaped bracket, one end of the second pin shaft is fixedly connected to the second ball pin, and the other end of the second pin shaft is connected to the second rotating wrench. A plurality of pneumatic push rods are fixedly connected to the side of the support block away from the second roller assembly, and a fixed plate is hinged at the output end of each pneumatic push rod, and a second rotating wheel is provided between two adjacent fixed plates, and the silk bundle is clamped between the second rotating wheel and the second roller assembly.

[0021] The present invention also provides a wire placing machine, comprising the above-mentioned wire placing head re-feeding device.

[0022] Beneficial effects:

[0023] The present invention provides a re-feeding device for a wire laying head, comprising a driving motor fixed on a frame of the wire laying head, which can provide power for the re-feeding device; the output end of the driving motor is transmission-connected to the first roller assembly, the first roller assembly and the second roller assembly are arranged in parallel, and the second roller assembly rotates following the first roller assembly; the two groups of roller assemblies can be rotated by a driving motor, and the wire bundles on both sides are respectively conveyed downward for laying without increasing the extra weight at the front end of the wire laying machine; a first rotary wheel assembly is arranged on one side of the first roller assembly, and a second rotary wheel assembly is arranged on one side of the second roller assembly, the wire bundle on one side is clamped between the first roller assembly and the first rotary wheel assembly, and the wire bundle on the other side is tightened between the second roller assembly and the second rotary wheel assembly, the first rotary wheel assembly and the second rotary wheel assembly can control the distance between each rotary wheel and the roller separately from both sides, thereby controlling the delivery of each wire bundle on both sides separately, and completing the control of the individual wire bundles, in addition, by controlling the distance to change the pressing force, the stability of the laying process can also be guaranteed.

[0024] The re-feeding device of a wire laying head of the present invention is installed on a wire laying machine through a wire laying head frame, and can independently control the laying of each wire bundle. In later maintenance, the rotating wheel assemblies on both sides can be disassembled by simply turning a wrench, which is convenient for maintenance and servicing of the re-feeding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a wire placement head re-feeding device provided in an embodiment of the present invention;

[0027] Figure 2Schematic diagram of the structure of the first runner assembly in the wire laying head refeeding device provided by the embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the structure of the second runner assembly in the wire laying head refeeding device provided by the embodiment of the present invention;

[0029] Figure 4 Schematic diagram of the overall structure in the wire laying head refeeding device provided by the embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the installation position of the refeeding device on the wire laying head provided by the embodiment of the present invention.

[0031] Icon: 100 - driving motor; 101 - motor body; 102 - first synchronous pulley; 103 - thrust bearing; 104 - synchronous belt;

[0032] 200 - first roller assembly; 201 - first roller body; 202 - second synchronous pulley; 203 - first transmission gear;

[0033] 300 - second roller assembly; 301 - second roller body; 302 - second transmission gear;

[0034] 400 - first runner assembly; 401 - bracket; 402 - first U-shaped bracket; 403 - first pin shaft; 404 - first ball pin; 405 - first rotating wrench; 406 - valve island; 407 - cylinder; 408 - water droplet-shaped plate; 409 - first runner;

[0035] 500 - second runner assembly; 501 - support block; 502 - second U-shaped bracket; 503 - second pin shaft; 504 - second ball pin; 505 - second rotating wrench; 506 - pneumatic push rod; 507 - fixing plate; 508 - second runner;

[0036] 600 - bushing. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0038] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0041] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0042] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0043] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0044] As Figure 1 shown, the present invention provides a filament refeeding device for a fiber placement head, including: a driving motor 100, a first roller assembly 200, a second roller assembly 300, a first runner assembly 400, and a second runner assembly 500;

[0045] The driving motor 100 is fixed on the frame of the fiber placement head. The output end of the driving motor 100 is in transmission connection with the first roller assembly 200. The first roller assembly 200 and the second roller assembly 300 are arranged in parallel. The second roller assembly 300 rotates following the first roller assembly 200. A first runner assembly 400 is arranged on one side of the first roller assembly 200, and a second runner assembly 500 is arranged on one side of the second roller assembly 300. One side of the fiber bundle is clamped between the first roller assembly 200 and the first runner assembly 400, and the other side of the fiber bundle is clamped between the second roller assembly 300 and the second runner assembly 500.

[0046] Specifically, as Figure 4 , Figure 5 shown, the refeeding device is located between the fiber bundle reel and the fiber placement head pressure roller. The driving motor 100 is fixed on the frame of the fiber placement head by bolts. The output end of the driving motor 100 can drive the first roller assembly 200 to rotate through the transmission connection with the first roller assembly 200. The first roller assembly 200 and the second roller assembly 300 are arranged through the frame of the fiber placement head, and the effect of rotation can be achieved. The first roller assembly 200 and the second roller assembly 300 are arranged in parallel and are in meshing transmission through gears, so that the second roller assembly 300 rotates following the first roller assembly 200. The rotation directions between the two are opposite. The first roller assembly 200 rotates counterclockwise, and the second roller assembly 300 rotates clockwise.

[0047] A first runner assembly 400 is arranged on one side of the first roller assembly 200, and a second runner assembly 500 is arranged on one side of the second roller assembly 300. Both the first runner assembly 400 and the second runner assembly 500 can be disassembled or installed on the frame of the fiber placement head by a wrench, which is convenient for later maintenance and servicing. When several runners on the first runner assembly 400 approach the first roller assembly 200 respectively, relying on the pressing force between the two and the counterclockwise rotation of the first roller assembly 200, the fiber bundle on the left is transmitted downward, and the clamping force and the laying of several fiber bundles can be controlled separately by controlling the distance. When several runners on the second runner assembly 500 approach the second roller assembly 300 respectively, relying on the pressing force between the two and the clockwise rotation of the second roller assembly 300, the fiber bundle on the right is transmitted downward.

[0048] It should be noted that the output end of the driving motor 100 and the first roller assembly 200 can be in gear transmission, synchronous belt transmission or chain transmission, so that the first roller assembly 200 can rotate.

[0049] It should be noted that, as Figure 4As shown, the first wheel assembly 400 and the second wheel assembly 500 are schematic diagrams of independently controlling four tows on one side, and a total of eight tows can be independently controlled on both sides. The number of wheels can be increased or decreased according to the actual composite material laying requirements, thereby changing the number of prepreg tows.

[0050] In the embodiment of the present invention, the driving motor 100 includes a motor body 101, a first synchronous wheel 102, a thrust bearing 103 and a synchronous belt 104;

[0051] The motor body 101 is fixed to the frame of the wire placing head. The output shaft of the motor body 101 is sleeved with a first synchronous wheel 102 and a thrust bearing 103 . The first synchronous wheel 102 is transmission-connected to the first roller assembly 200 via a synchronous belt 104 .

[0052] Specifically, Figure 1 As shown, the motor body 101 is fixed on the frame of the wire laying head, and the output shaft of the motor body 101 is sleeved with a first synchronous wheel 102 and a thrust bearing 103 in sequence. The first synchronous wheel 102 is a component for synchronous transmission, and it is used in conjunction with the synchronous belt 104 to transmit the rotational power to the first roller assembly 200. The thrust bearing 103 is used to bear the axial force to prevent the first synchronous wheel 102 from moving in the axial direction and sliding out of the output shaft.

[0053] In the embodiment of the present invention, the first roller assembly 200 includes a first roller body 201, a second synchronous wheel 202 and a first transmission gear 203;

[0054] One end of the first roller body 201 is sleeved with a second synchronous wheel 202, and the other end of the first roller body 201 is sleeved with a first transmission gear 203. The first roller body 201 and the second roller assembly 300 are arranged in parallel, and the second synchronous wheel 202 is transmission-connected to the output end of the driving motor 100, and the first transmission gear 203 drives the second roller assembly 300 to rotate.

[0055] The second roller assembly 300 includes a second roller body 301 and a second transmission gear 302 . The second roller body 301 is arranged in parallel with the first roller body 201 . One end of the second roller body 301 is meshed with the first transmission gear 203 and connected to the second transmission gear 302 .

[0056] Specifically, Figure 1As shown, a second synchronous pulley 202 is sleeved on one end of the first roller body 201 close to the drive motor 100. The second synchronous pulley 202 and the output end of the drive motor 100 are connected by a synchronous belt 104 for transmission. At this time, the drive motor 100 provides power to drive the second synchronous pulley 202 to rotate. Furthermore, it drives the first roller body 201 to rotate counterclockwise. A first transmission gear 203 is sleeved on the other end of the first roller body 201 away from the drive motor 100. The first transmission gear 203 rotates with the first roller body 201 and serves as a power output gear to mesh with the second roller assembly 300 and drive it to rotate, so that the second roller assembly 300 rotates clockwise, providing power for the downward transportation of the tow.

[0057] In an embodiment of the present invention, shaft sleeves 600 for preventing sliding are provided at the outer ends of the second synchronous pulley 202, the first transmission gear 203, and the second transmission gear 302 along the horizontal axis. The transmission ratio between the first transmission gear 203 and the second transmission gear 302 is 1:1.

[0058] Specifically, shaft sleeves 600 are sleeved on the outer ends of the second synchronous pulley 202, the first transmission gear 203, and the second transmission gear 302 along the horizontal axis to prevent axial sliding of the transmission components during operation, ensuring the stability and accuracy of the transmission.

[0059] The number of teeth of the first transmission gear 203 and the second transmission gear 302 is the same, that is, the transmission ratio is 1:1. The same transmission ratio can ensure that when switching the filament laying left and right, the tows on both sides can be laid evenly in turn, preventing the tows on both sides from descending to the pressure roller at different speeds due to different transmission ratios, resulting in uneven final laying.

[0060] It should be noted that thrust bearings, positioning pins, locking nuts or keys can also be used at the outer ends of the second synchronous pulley 202, the first transmission gear 203, and the second transmission gear 302 along the horizontal axis to prevent axial sliding during the rotation of the gears.

[0061] In an embodiment of the present invention, the first runner assembly 400 includes a bracket 401, a first U-shaped bracket 402, a first pin shaft 403, a first ball pin 404, a first rotating wrench 405, a valve island 406, a cylinder 407, a water droplet-shaped plate 408, and a first runner 409;

[0062] The bracket 401 is arranged on the side of the first roller assembly 200. At both ends of the bracket 401, there are first U-shaped brackets 402. The first pin shaft 403 is clamped in the groove of the first U-shaped bracket 402. One end of the first pin shaft 403 is fixedly connected to the first ball pin 404, and the other end of the first pin shaft 403 is connected to the first rotating wrench 405. At the top of the bracket 401, there is a valve island 406. The valve island 406 is pneumatically connected to a number of cylinders 407 through pipelines. At the output end of each cylinder 407, there is a water-drop-shaped plate 408 hinged. Between two adjacent water-drop-shaped plates 408, there is a first runner 409. One side of the tow is clamped between the first runner 409 and the first roller assembly 200.

[0063] The bottom end of the bracket 401 is in a hook shape, and the end of the water-drop-shaped plate 408 is placed at the hook of the bottom end of the bracket 401.

[0064] Specifically, as Figure 2 shown, the bracket 401 is arranged on the side of the first roller assembly 200. Two first U-shaped brackets 402 are welded at both ends of the bracket 401. The first U-shaped brackets 402 are used for installing and disassembling the first runner assembly 400 from the fiber placement head frame. Two first pin shafts 403 are respectively clamped in the grooves inside the first U-shaped brackets 402 at both ends and can rotate in the grooves. One end of the first pin shaft 403 is fixedly connected to the first ball pin 404. The first ball pin 404 is formed by welding a sphere and two cylinders. The other end of the first pin shaft 403 is connected to the first rotating wrench 405. When it is necessary to disassemble or install, rotate the first rotating wrench 405. At this time, the first ball pin 404 also rotates through the first pin shaft 403, changing from the longitudinal state to the transverse state. At this time, hold the first rotating wrench 405 and slide it outwards, and the first runner assembly 400 can be installed and removed from the fiber placement head frame.

[0065] At the top of the bracket 401, there is a valve island 406. The valve island 406 integrates multiple valves, sensors, actuators, and other fluid control components in one frame to achieve more efficient, compact, and flexible control. The valve island 406 is pneumatically connected to a number of cylinders 407 through pipelines, so as to control each cylinder separately. At the output end of each cylinder 407, there is a water-drop-shaped plate 408 vertically hinged downwards. When several tows need to be transported down to the fiber placement head pressure roller end, the valve island 406 is used to control the expansion and contraction of the cylinders 407. At this time, the water-drop-shaped plates 408 will also bounce obliquely upwards to the right, thereby realizing that the first runner 409 arranged between two adjacent water-drop-shaped plates 408 extends closer to or farther away from the first roller assembly 200. At the same time, there is only one tow on each first runner 409, realizing the separate tow control during the fiber placement process. At the same time, the increased pressing force will also ensure the stability of the tow during the fiber placement process.

[0066] Specifically, the bottom end of the bracket 401 is in a hook shape, and the end of the water droplet-shaped plate 408 is placed at the hook of the bottom end of the bracket 401. The hook shape is designed according to the overall structure of the fiber placement machine to prevent the water droplet-shaped plate 408 from being ejected too high obliquely upward due to excessive power, too strong elasticity or inertia of the air cylinder 407, resulting in friction between the first runner 409 and the first roller body 201. The end of the water droplet-shaped plate 408 is placed at the hook of the bottom end of the bracket 401, which will limit the water droplet-shaped plate 408 when it reaches a certain height.

[0067] In an embodiment of the present invention, the second runner assembly 500 includes a support block 501, a second U-shaped bracket 502, a second pin shaft 503, a second ball pin 504, a second turning wrench 505, a pneumatic push rod 506, a fixing plate 507 and a second runner 508;

[0068] The support block 501 is arranged on the side of the second roller assembly 300. Second U-shaped brackets 502 are provided at both ends of the support block 501. The second pin shaft 503 is clamped in the groove of the second U-shaped bracket 502. One end of the second pin shaft 503 is fixedly connected to the second ball pin 504, and the other end of the second pin shaft 503 is connected to the second turning wrench 505. A plurality of pneumatic push rods 506 are fixedly connected to the side of the support block 501 away from the second roller assembly 300. The output end of each pneumatic push rod 506 is hinged to a fixing plate 507. A second runner 508 is provided between two adjacent fixing plates 507, and the fiber bundle is clamped between the second runner 508 and the second roller assembly 300.

[0069] Specifically, as Figure 3 shown, the disassembly part of the second runner assembly 500 is the same as that of the first runner assembly 400. Second U-shaped brackets 502 are welded to both ends of the support block 501. Two second pin shafts 503 are respectively clamped in the grooves in the second U-shaped brackets 502 at both ends and can rotate in the grooves. One end of the second pin shaft 503 is fixedly connected to the second ball pin 504. The second ball pin 504 is formed by welding a sphere and two cylinders. The other end of the second pin shaft 503 is connected to the second turning wrench 505. When disassembly or installation is required, rotate the second turning wrench 505. At this time, the second ball pin 504 also rotates through the second pin shaft 503, changing from the longitudinal state to the transverse state. At this time, grasp the second turning wrench 505 and slide it outwards, and the second runner assembly 500 of the first runner assembly can be installed and removed from the fiber placement head frame.

[0070] A plurality of pneumatic push rods 506 are fixed on the support block 501. The output end of each pneumatic push rod 506 is hinged downward with a fixing plate 507. A second runner 508 is arranged between two adjacent fixing plates 507. When the pneumatic push rod 506 is pushed, it drives the second runner 508 to move closer to or away from the left upper oblique direction from below. When several left filament bundles need to be transported downward to the laying head roller end, the pneumatic push rod 506 expands and contracts. At this time, the fixing plate 507 also drives the second runner 508 to bounce in the left upper oblique direction, thereby realizing that the second runner 508 extends to be close to or away from the second roller assembly 300. At the same time, only one filament bundle is controlled on each second runner 508, realizing the separate filament bundle control in the laying process. At the same time, the increased pressing force also ensures the stability of the filament bundle during the laying process.

[0071] The present invention also provides a filament laying machine, including the refeeding device of the above-mentioned laying head, constituting a complete composite material filament laying device.

[0072] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rewinding device for a fiber placement head, characterized in that, Including: A drive motor (100), a first roller assembly (200), a second roller assembly (300), a first runner assembly (400) and a second runner assembly (500); The drive motor (100) is fixed on the frame of the fiber placement head. The output end of the drive motor (100) is in transmission connection with the first roller assembly (200). The first roller assembly (200) and the second roller assembly (300) are arranged in parallel. The second roller assembly (300) rotates following the first roller assembly (200). A first runner assembly (400) is arranged on one side of the first roller assembly (200), and a second runner assembly (500) is arranged on one side of the second roller assembly (300). One side of the fiber bundle is clamped between the first roller assembly (200) and the first runner assembly (400), and the other side of the fiber bundle is clamped between the second roller assembly (300) and the second runner assembly (500); The first runner assembly (400) includes a bracket (401), a first U-shaped bracket (402), a first pin shaft (403), a first ball pin (404), a first turning wrench (405), a valve island (406), a cylinder (407), a water-drop-shaped plate (408) and a first runner (409); The bracket (401) is arranged on the side of the first roller assembly (200). The first U-shaped brackets (402) are provided at both ends of the bracket (401). The first pin shaft (403) is clamped in the groove of the first U-shaped bracket (402). One end of the first pin shaft (403) is fixedly connected to the first ball pin (404), and the other end of the first pin shaft (403) is connected to the first turning wrench (405). The valve island (406) is provided at the top of the bracket (401). The valve island (406) is pneumatically connected to a plurality of the cylinders (407) through pipelines. The output end of each cylinder (407) is hinged with the water-drop-shaped plate (408). The first runner (409) is arranged between two adjacent water-drop-shaped plates (408). The fiber bundle is clamped between the first runner (409) and the first roller assembly (200); The second runner assembly (500) includes a support block (501), a second U-shaped bracket (502), a second pin shaft (503), a second ball pin (504), a second turning wrench (505), a pneumatic push rod (506), a fixing plate (507) and a second runner (508); The support block (501) is arranged on the side of the second roller assembly (300). The two ends of the support block (501) are provided with the second U-shaped brackets (502). The second pin shaft (503) is clamped in the groove of the second U-shaped bracket (502). One end of the second pin shaft (503) is fixedly connected to the second ball pin (504), and the other end of the second pin shaft (503) is connected to the second turning wrench (505). On the side of the support block (501) away from the second roller assembly (300), a plurality of pneumatic push rods (506) are fixedly connected. The output end of each pneumatic push rod (506) is hinged with a fixing plate (507). A second runner (508) is arranged between two adjacent fixing plates (507). The tow is clamped between the second runner (508) and the second roller assembly (300).

2. The filament rewinding device of the fiber placement head according to claim 1, characterized in that, The drive motor (100) includes a motor body (101), a first synchronous pulley (102), a thrust bearing (103), and a synchronous belt (104); The motor body (101) is fixed on the frame of the fiber placement head. The first synchronous pulley (102) and the thrust bearing (103) are sleeved on the output shaft of the motor body (101). The first synchronous pulley (102) is in transmission connection with the first roller assembly (200) through the synchronous belt (104).

3. The wire laying head refeeding device according to claim 1, characterized in that, The first roller assembly (200) includes a first roller body (201), a second synchronous pulley (202), and a first transmission gear (203); One end of the first roller body (201) is sleeved with the second synchronous pulley (202), and the other end of the first roller body (201) is sleeved with the first transmission gear (203). The first roller body (201) is arranged parallel to the second roller assembly (300). The second synchronous pulley (202) is in transmission connection with the output end of the drive motor (100). The first transmission gear (203) drives the second roller assembly (300) to rotate.

4. The wire laying head refeeding device according to claim 3, characterized in that, The second roller assembly (300) includes a second roller body (301) and a second transmission gear (302); The second roller body (301) is arranged parallel to the first roller body (201). One end of the second roller body (301) is meshed with the first transmission gear (203) and is provided with the second transmission gear (302).

5. The filament rewinding device of the fiber placement head according to claim 4, characterized in that, Shaft sleeves (600) for preventing sliding are arranged at the outer ends of the second synchronous pulley (202), the first transmission gear (203), and the second transmission gear (302) along the horizontal axis.

6. The refeeding device of the fiber placement head according to claim 4, wherein, The transmission ratio between the first transmission gear (203) and the second transmission gear (302) is 1:

1.

7. The wire laying head refeeding device according to claim 1, characterized in that, The bottom end of the bracket (401) is in a hook shape, and the end of the water droplet-shaped plate (408) is placed at the hook of the bottom end of the bracket (401).

8. A fiber placement machine, characterized in that, A rewinding device including the fiber placement head according to any one of claims 1-7.

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