Reconveying device of fiber placement head and fiber placement machine

Abstract

The invention provides a re-conveying device of a fiber placement head and a fiber placement machine, and relates to the technical field of composite material placement devices.The re-conveying device comprises 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 a rack 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 along with the first roller assembly, and the 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, tows on one side are clamped between the first roller assembly and the first rotating wheel assembly, and tows on the other side are clamped between the second roller assembly and the second rotating wheel assembly. The technical problem that in the prior art, two rollers rotate and press downwards, and laying can only be stopped when a certain wire has defects is solved, and the technical effect that each tow can be independently controlled is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material laying devices, and in particular to a heavy-feeding device for a wire laying head and a wire laying machine. Background Art

[0002] Carbon fiber composites are becoming increasingly important in modern industry due to their light weight, high strength and high stiffness. In the aerospace field, carbon fiber composites 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 composites are also widely used in sports equipment, wind turbine blades, building reinforcement and other fields.

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

[0004] In the prior art, the re-feeding device in the wire laying head at the front end of the wire laying machine is generally a motor-controlled two rollers to directly rotate and press down multiple wire bundles, so that multiple wire bundles are laid downward at the same time. This situation results in the wire laying machine having to be suspended once a certain wire is laid, and the laying cannot continue, affecting work efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a wire laying head re-feeding device and a wire laying machine to alleviate the technical problem in the prior art that two rollers directly rotate and press down multiple wire bundles, and when a wire has a defect, the laying can only be stopped.

[0006] The present invention provides a re-feeding device for a wire placing head, comprising: 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 on the frame of the wire laying head, and 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. 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. One side of the wire bundle is clamped between the first roller assembly and the first rotary wheel assembly, and the other side of the wire bundle is tightened between the second roller assembly and the second rotary wheel assembly.

[0007] Further, the driving motor includes a motor body, a first synchronous wheel, a thrust bearing and a synchronous belt; 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.

[0008] Further, the first roller assembly includes a first roller body, a second synchronous wheel and a first transmission gear; 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.

[0009] Further, the second roller assembly includes a second roller body and a second transmission gear; 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.

[0010] 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.

[0011] Furthermore, the transmission ratio between the first transmission gear and the second transmission gear is 1:1.

[0012] 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; 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.

[0013] 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.

[0014] 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; 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.

[0015] The present invention also provides a wire placing machine, comprising the above-mentioned wire placing head re-feeding device.

[0016] Beneficial effects: 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.

[0017] 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

[0018] 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.

[0019] Figure 1 A schematic diagram of the structure of a wire placement head re-feeding device provided in an embodiment of the present invention; Figure 2 A schematic structural diagram of a first rotating wheel assembly in a wire placing head re-feeding device provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a second rotating wheel assembly in a wire placing head re-feeding device provided in an embodiment of the present invention; Figure 4 A schematic diagram of the overall structure of a wire placement head re-feeding device provided in an embodiment of the present invention; Figure 5 A schematic diagram of the installation position of the re-feeding device provided in an embodiment of the present invention on the wire placing head.

[0020] Icon: 100-driving motor; 101-motor body; 102-first synchronous wheel; 103-thrust bearing; 104-synchronous belt; 200-first roller assembly; 201-first roller body; 202-second synchronous wheel; 203-first transmission gear; 300 - second roller assembly; 301 - second roller body; 302 - second transmission gear; 400-first rotating wheel 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 drop plate; 409-first rotating wheel; 500-second rotating wheel 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 rotating wheel; 600-Bushing. DETAILED DESCRIPTION

[0021] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] like Figure 1 As shown, the present invention provides a re-feeding device for a wire placing head, comprising: a driving motor 100, a first roller assembly 200, a second roller assembly 300, a first rotating wheel assembly 400 and a second rotating wheel assembly 500; The driving motor 100 is fixed on the frame of the wire laying head, and the output end of the driving motor 100 is transmission-connected to the first roller assembly 200. The first roller assembly 200 and the second roller assembly 300 are arranged in parallel, and the second roller assembly 300 rotates following the first roller assembly 200. A first rotary wheel assembly 400 is arranged on one side of the first roller assembly 200, and a second rotary wheel assembly 500 is arranged on one side of the second roller assembly 300. One side of the silk bundle is clamped between the first roller assembly 200 and the first rotary wheel assembly 400, and the other side of the silk bundle is clamped between the second roller assembly 300 and the second rotary wheel assembly 500.

[0029] Specifically, Figure 4 , Figure 5 As shown, the re-feeding device is located between the tow reel and the pressure roller of the wire laying head, and the driving motor 100 is fixed to the frame of the wire laying head by bolts. The output end of the driving motor 100 is connected to the first roller assembly 200 through a transmission connection, and can drive the first roller assembly 200 to rotate. The first roller assembly 200 and the second roller assembly 300 are arranged on the frame of the wire laying head to achieve the effect of rotation, and the first roller assembly 200 and the second roller assembly 300 are arranged in parallel and meshed through gears, so that the second roller assembly 300 rotates with the first roller assembly 200, and the rotation directions of the two are opposite, the first roller assembly 200 rotates counterclockwise, and the second roller assembly 300 rotates clockwise.

[0030] A first rotary wheel assembly 400 is arranged on one side of the first roller assembly 200, and a second rotary wheel assembly 500 is arranged on one side of the second roller assembly 300. Both the first rotary wheel assembly 400 and the second rotary wheel assembly 500 can be removed or installed on the frame of the wire laying head by a wrench, which is convenient for later maintenance and upkeep. When several rotary wheels on the first rotary wheel assembly 400 are respectively close to the first roller assembly 200, the wire bundle on the left is transmitted downward by relying on the pressing force between the two and the counterclockwise rotation of the first roller assembly 200, and the clamping force and the laying of several wire bundles can be controlled by controlling the distance separately. When several rotary wheels on the second rotary wheel assembly 500 are respectively close to the second roller assembly 300, the wire bundle on the right is transmitted downward by relying on the pressing force between the two and the clockwise rotation of the second roller assembly 300.

[0031] It should be noted that the output end of the driving motor 100 and the first roller assembly 200 may be gear-driven, synchronous belt-driven or chain-driven, so that the first roller assembly 200 can rotate.

[0032] It should be noted that if Figure 4 As 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.

[0033] 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; 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 .

[0034] Specifically, Figure 1As 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.

[0035] 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; 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.

[0036] 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 .

[0037] Specifically, Figure 1 As shown, a second synchronous wheel 202 is sleeved on one end of the first roller body 201 close to the driving motor 100, and the second synchronous wheel 202 is connected to the output end of the driving motor 100 through a synchronous belt 104. At this time, the driving motor 100 provides power to drive the second synchronous wheel 202 to rotate, thereby driving the first roller body 201 to rotate counterclockwise, and the other end of the first roller body 201 away from the driving motor 100 is sleeved with a first transmission gear 203. The first transmission gear 203 rotates with the first roller body 201 and acts as a power output gear to mesh with the second roller assembly 300 and drive the rotation, so that the second roller assembly 300 rotates clockwise to provide power for the downward transportation of the tow.

[0038] In the embodiment of the present invention, the outer ends of the second synchronous wheel 202, the first transmission gear 203 and the second transmission gear 302 along the horizontal axis are all provided with a sleeve 600 to prevent sliding. The transmission ratio between the first transmission gear 203 and the second transmission gear 302 is 1:1.

[0039] Specifically, the outer ends of the second synchronous wheel 202, the first transmission gear 203 and the second transmission gear 302 along the horizontal axis are sleeved with a shaft sleeve 600 to prevent the transmission components from axial sliding during operation and ensure the stability and accuracy of the transmission.

[0040] The first transmission gear 203 and the second transmission gear 302 have the same number of teeth, that is, the transmission ratio is 1:1; the same transmission ratio can ensure that when switching between left and right wire laying, the wire bundles on both sides can be laid evenly in turn, preventing the wire bundles on both sides from falling to the pressure roller at different speeds due to different transmission ratios, resulting in uneven final laying.

[0041] It should be noted that the outer ends of the second synchronous wheel 202, the first transmission gear 203 and the second transmission gear 302 along the horizontal axis may also adopt thrust bearings, positioning pins, locking nuts or keys to prevent axial sliding during the rotation of the gears.

[0042] In the embodiment of the present invention, the first rotating wheel assembly 400 includes a bracket 401, a first U-shaped bracket 402, a first pin 403, a first ball pin 404, a first rotating wrench 405, a valve island 406, a cylinder 407, a water drop plate 408 and a first rotating wheel 409; The bracket 401 is arranged on the side of the first roller assembly 200, and 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 rotating wrench 405. A valve island 406 is provided at the top of the bracket 401, and the valve island 406 is pneumatically connected to a plurality of cylinders 407 through pipelines. A water drop-shaped plate 408 is hinged at the output end of each cylinder 407, and a first rotating wheel 409 is provided between two adjacent water drop-shaped plates 408, and one side of the silk bundle is clamped between the first rotating wheel 409 and the first roller assembly 200.

[0043] 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 at the bottom end of the bracket 401 .

[0044] Specifically, Figure 2 As shown, the bracket 401 is arranged on the side of the first roller assembly 200, and two first U-shaped brackets 402 are welded at both ends of the bracket 401. The first U-shaped bracket 402 is used to install and remove the first wheel assembly 400 from the wire placement head frame. Two first pins 403 are respectively clamped in the grooves in the first U-shaped brackets 402 at both ends, and can rotate in the grooves. One end of the first pin 403 is fixedly connected to the first ball pin 404, which is welded from a sphere and two cylinders, and the other end of the first pin 403 is connected to the first rotating wrench 405. When it is necessary to disassemble or install, the first rotating wrench 405 is rotated, and the first ball pin 404 is also rotated through the first pin 403, and turns from the longitudinal state to the transverse state. At this time, the first rotating wrench 405 is grasped and slid outward, and the first wheel assembly 400 can be installed and removed from the wire placement head frame.

[0045] A valve island 406 is arranged at the top of the bracket 401. The valve island 406 integrates multiple valves, sensors, actuators and other fluid control components in a frame to achieve more efficient, compact and flexible control. The valve island 406 is pneumatically connected to a plurality of cylinders 407 through pipelines, so as to control each cylinder separately. The output end of each cylinder 407 is vertically hinged downward with a water drop plate 408. When several tows are required to be transported downward to the pressure roller end of the laying head, the cylinder 407 is controlled to be extended and retracted through the valve island 406. At this time, the water drop plate 408 will also be bounced to the right and upward, thereby achieving the first rotating wheel 409 arranged between two adjacent water drop plates 408 to be extended close to or away from the first roller assembly 200. At the same time, there is only one tow on each first rotating wheel 409, which realizes the individual tow control of the laying process. At the same time, the increased pressing force will also ensure the stability of the tow during the laying process.

[0046] Specifically, the bottom end of the bracket 401 is hook-shaped, and the end of the water drop plate 408 is placed at the hook at the bottom end of the bracket 401. The hook shape is designed according to the overall structure of the wire laying machine to prevent the water drop plate 408 from being ejected too high diagonally upward due to excessive power, excessive elastic force or inertia of the cylinder 407, resulting in friction between the first rotating wheel 409 and the first roller body 201. The end of the water drop plate 408 is placed at the hook at the bottom end of the bracket 401, and when it reaches a certain height, the water drop plate 408 will be limited.

[0047] In the embodiment of the present invention, the second rotating wheel assembly 500 includes a support block 501, a second U-shaped bracket 502, a second pin 503, a second ball pin 504, a second rotating wrench 505, a pneumatic push rod 506, a fixing plate 507 and a second rotating wheel 508; The support block 501 is arranged on the side of the second roller assembly 300, and a second U-shaped bracket 502 is 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 rotating 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, and a fixed plate 507 is hinged at the output end of each pneumatic push rod 506. A second rotating wheel 508 is provided between two adjacent fixed plates 507, and the yarn bundle is clamped between the second rotating wheel 508 and the second roller assembly 300.

[0048] Specifically, Figure 3As shown, the disassembly part of the second wheel assembly 500 is the same as that of the first wheel assembly 400. A second U-shaped bracket 502 is welded at both ends of the support block 501. Two second pins 503 are respectively clamped in the grooves in the second U-shaped bracket 502 at both ends and can rotate in the grooves. One end of the second pin 503 is fixedly connected to the second ball pin 504, which is welded from a sphere and two cylinders. The other end of the second pin 503 is connected to the second rotating wrench 505. When disassembly or installation is required, the second rotating wrench 505 is rotated. At this time, the second ball pin 504 is also rotated through the second pin 503, and the second rotating wrench 504 is turned from the longitudinal state to the transverse state. At this time, the second rotating wrench 505 is grasped and slid outward, and the first wheel assembly and the second wheel assembly 500 can be installed and removed from the wire placement head frame.

[0049] A plurality of pneumatic push rods 506 are fixed on the support block 501, and a fixed plate 507 is hinged downward at the output end of each pneumatic push rod 506, and a second rotating wheel 508 is arranged between two adjacent fixed plates 507. When the pneumatic push rod 506 is pushed, the second rotating wheel 508 is driven to approach or move away from the bottom to the upper left obliquely. When a few tows on the left side need to be transported downward to the pressure roller end of the wire laying head, the pneumatic push rod 506 is extended and retracted, and at this time, the fixed plate 507 also drives the second rotating wheel 508 to bounce upward to the upper left obliquely, thereby extending the second rotating wheel 508 to approach or move away from the second roller assembly 300. At the same time, each second rotating wheel 508 controls only one tow, realizing the control of a single tow in the wire laying process, and the increased pressing force also ensures the stability of the tow in the wire laying process.

[0050] The present invention also provides a wire placing machine, comprising the above-mentioned wire placing head re-feeding device, forming a complete composite material wire placing device.

[0051] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A re-feeding device for a wire placing head, characterized in that: include: A driving motor (100), a first roller assembly (200), a second roller assembly (300), a first rotating wheel assembly (400), and a second rotating wheel assembly (500); The driving motor (100) is fixed on a frame of the wire laying head, and the output end of the driving motor (100) is drivingly connected to the first roller assembly (200); the first roller assembly (200) and the second roller assembly (300) are arranged in parallel, and the second roller assembly (300) rotates following the first roller assembly (200); a first rotating wheel assembly (400) is arranged on one side of the first roller assembly (200), and a second rotating wheel assembly (500) is arranged on one side of the second roller assembly (300); a yarn bundle on one side is clamped between the first roller assembly (200) and the first rotating wheel assembly (400), and a yarn bundle on the other side is clamped between the second roller assembly (300) and the second rotating wheel assembly (500).

2. The re-feeding device of the wire placing head according to claim 1, characterized in that: The driving motor (100) comprises a motor body (101), a first synchronous wheel (102), a thrust bearing (103) and a synchronous belt (104); The motor body (101) is fixed to a frame of a wire laying head, the first synchronous wheel (102) and the thrust bearing (103) are sleeved on an output shaft of the motor body (101), and the first synchronous wheel (102) is transmission-connected to the first roller assembly (200) via the synchronous belt (104).

3. The re-feeding device of the wire placing head according to claim 1, characterized in that: The first roller assembly (200) comprises a first roller body (201), a second synchronous wheel (202) and a first transmission gear (203); One end of the first roller body (201) is sleeved with the second synchronous wheel (202), and the other end of the first roller body (201) is sleeved with the first transmission gear (203); the first roller body (201) and the second roller assembly (300) are arranged in parallel; the second synchronous wheel (202) is transmission-connected to the output end of the drive motor (100); and the first transmission gear (203) drives the second roller assembly (300) to rotate.

4. The re-feeding device of the wire placing head according to claim 3, characterized in that: The second roller assembly (300) comprises 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).

5. The re-feeding device for the wire placing head according to claim 4, characterized in that: The outer ends of the second synchronous wheel (202), the first transmission gear (203) and the second transmission gear (302) along the horizontal axis are all provided with sleeves (600) to prevent sliding.

6. The re-feeding device of the wire placing head according to claim 4, characterized in that: The transmission ratio between the first transmission gear (203) and the second transmission gear (302) is 1:

1.

7. The re-feeding device of the wire placing head according to claim 1, characterized in that: The first rotating wheel assembly (400) comprises 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 drop plate (408) and a first rotating wheel (409); The bracket (401) is arranged on the side of the first roller assembly (200), and the first U-shaped brackets (402) are arranged 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 rotating wrench (405), and the valve island (406) is arranged at the top of the bracket (401), and the valve island (406) is pneumatically connected to a plurality of the cylinders (407) through pipelines, and the output end of each of the cylinders (407) is hinged with the water drop-shaped plate (408), and the first rotating wheel (409) is arranged between two adjacent water drop-shaped plates (408), and the silk bundle is clamped between the first rotating wheel (409) and the first roller assembly (200).

8. The re-feeding device for the wire placing head according to claim 7, characterized in that: 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 at the bottom end of the bracket (401).

9. The re-feeding device of the wire placing head according to claim 1, characterized in that: The second rotating wheel assembly (500) comprises a support block (501), a second U-shaped bracket (502), a second pin shaft (503), a second ball pin (504), a second rotating wrench (505), a pneumatic push rod (506), a fixing plate (507) and a second rotating wheel (508); The support block (501) is arranged on the side of the second roller assembly (300), and the 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 rotating 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), and the output end of each pneumatic push rod (506) is hinged to the fixing plate (507), and the second rotating wheel (508) is provided between two adjacent fixing plates (507), and the silk bundle is clamped between the second rotating wheel (508) and the second roller assembly (300).

10. A wire laying machine, characterized in that: A re-feeding device comprising a wire placing head as described in any one of claims 1-9.

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