Carbon fiber spreading fiber weaving weft feeding mechanism

Abstract

The present application relates to carbon fiber width fiber weaving weft feeding mechanism, including first support, pay-off disc, brake, shaft assembly, shaft assembly includes three shafts, one of three shafts is tension sensor shaft, second support is set up with first support front and back corresponding, first sliding module is set up on second support, jaw structure is relatively fixed on first guide piece, first clamping structure is between shaft assembly and second support, first clamping structure is used for clamping carbon fiber, first clamping structure is relatively installed on first support, second clamping structure is set up in the front side of first clamping structure, third clamping structure is used for clamping carbon fiber, second sliding module is set up on first support, second clamping structure is set up on second guide piece, third sliding module is set up on second support, third clamping structure is set up on third guide piece, shearing structure is set up between first clamping structure and second clamping structure in front and back direction.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of composite material weaving, and particularly relates to a carbon fiber spread fiber weaving and weft feeding mechanism. BACKGROUND

[0002] In recent years, due to the progress of carbon fiber technology at home and abroad, the price of carbon fiber raw materials has shown a downward trend, and the application of carbon fiber is more and more extensive in China. Carbon fiber composite materials have excellent heat resistance, heat shock resistance, corrosion resistance and other properties. Its structural parts are used to manufacture aerospace and other high-demand occasions, and the material performance requirements of structural parts are higher.

[0003] With the wide application of carbon fiber structural parts, carbon fiber spread technology emerges as the times require. Because the spreaded fiber has a thinner cross-sectional area, thermoplastic resin and thermosetting resin can well wrap the surface of the carbon fiber raw filament bundle, and the structural parts prepared therefrom have good interlaminar bonding performance and mechanical properties. The warp and weft tension control and the uniformity of the warp and weft grid of the spreaded fiber fabric will greatly affect the strength and surface quality of the structural parts. In the prior art, when weaving carbon fiber spreaded fiber fabric, the weft tension control of the carbon fiber spreaded fiber is not uniform, which leads to the problem of uneven grid between the weft and the warp. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a carbon fiber spreaded fiber weaving and weft feeding mechanism to solve the technical problem of uneven weft tension control of the carbon fiber spreaded fiber in the prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the carbon fiber spreaded fiber weaving and weft feeding mechanism of the present application is as follows:

[0006] A carbon fiber spreaded fiber weaving and weft feeding mechanism comprises:

[0007] A first support;

[0008] A feeding disc is rotatably arranged relative to the first support;

[0009] A brake is fixedly arranged relative to the first support, and the brake is in transmission connection with the rotating shaft of the feeding disc to adjust the rotating speed of the feeding disc;

[0010] A rotating shaft assembly is fixedly arranged relative to the first support, and the rotating shaft assembly comprises at least three rotating shafts arranged in the front-rear direction and staggered in the up-down direction. One of the three rotating shafts is a tension sensor rotating shaft;

[0011] A second support is arranged corresponding to the first support in the front-rear direction;

[0012] The second bracket is provided with a first sliding module. The first sliding module includes a first slide rail fixed on the second bracket and extending in the front-back direction, a first guide member adapted to slide along the first slide rail, and a first drive structure that is connected to the first guide member to realize the movement of the first guide member on the first slide rail.

[0013] Gripper structure: Fixed relative to the first guide member, the gripper structure is used to clamp the end of the carbon fiber;

[0014] First clamping structure: It is disposed between the rotating shaft assembly and the second bracket in the front-back direction. The first clamping structure is used to clamp carbon fiber. The first clamping structure is mounted on the first bracket.

[0015] Second clamping structure: It is spaced out on the front side of the first clamping structure and is used to clamp carbon fiber.

[0016] Third clamping structure: It is spaced out in front of the second clamping structure and is used to clamp carbon fiber.

[0017] Second sliding module: disposed on the first bracket, the second sliding module includes a second slide rail fixed on the first bracket and extending in the left and right direction, a second guide member adapted to guide and slide the second slide rail, and a second drive structure that is drivenly connected to the second guide member to realize the movement of the second guide member on the second slide rail;

[0018] The second clamping structure is disposed on the second guide member;

[0019] Third sliding module: set on the second bracket, the third sliding module includes a third slide rail fixed on the second bracket and extending in the left and right direction, a third guide member adapted to guide the sliding of the third slide rail, and a third drive structure that is connected to the third guide member to realize the movement of the third guide member on the third slide rail.

[0020] The third clamping structure is disposed on the third guide member;

[0021] Shearing structure: disposed between the first clamping structure and the second clamping structure in the front-to-back direction, the shearing structure being mounted on the second guide member.

[0022] Beneficial Effects: The carbon fiber spreading fiber weft feeding mechanism of the present invention sequentially winds the carbon fiber strip wound on the unwinding reel in an S-shape around the rotating shaft, and clamps the ends of the carbon fiber strip with a gripper structure. When the tension sensor in the rotating shaft detects the real-time tension of the carbon fiber strip, it feeds the measured tension back to the magnetic powder brake. The magnetic powder brake controls the rotation speed of the unwinding reel shaft, thereby controlling the unwinding speed of the carbon fiber strip on the unwinding reel, ensuring uniform tension of the carbon fiber strip. Therefore, when the carbon fiber strip is used as weft and warp yarns for weaving, it can ensure the mesh between the warp and weft yarns. The uniformity of the carbon fiber tape is ensured during use. The tape is clamped by the gripper structure and pulled sequentially through the first, second, and third clamping structures by the first sliding module. The shearing structure cuts the carbon fiber tape between the first and second clamping structures. The cut tape is then clamped between the second and third clamping structures. Finally, under the combined action of the second and third sliding modules, the carbon fiber tape extending in the front-to-back direction is moved from right to left, allowing it to be woven as weft and warp yarns.

[0023] Furthermore, the first bracket includes a horizontally arranged first fixing plate, a horizontally arranged second fixing plate fixed to the front side of the first fixing plate, and a vertically arranged third fixing plate fixed to the rear side of the first fixing plate. The third fixing plate has a through hole, and a bearing is installed in the through hole. The rotating shaft of the feeding tray passes through the bearing. The rotating shaft of the feeding tray is an air expansion shaft. An isolation column is fixedly installed on the side of the third fixing plate opposite to the feeding tray. The brake is fixedly connected to the isolation column and is drivenly connected to the air expansion shaft.

[0024] Beneficial effects: The air shaft setting makes it easy to fix the feeding plate relative to the feeding plate's rotating shaft (i.e., the air shaft). Moreover, it makes it easy to control the rotation speed of the air shaft through the brake, thereby controlling the feeding speed of the feeding plate.

[0025] Furthermore, a vertically arranged fourth fixing plate is fixed on the first fixing plate, and a first rotating wheel, a second rotating wheel, and a third rotating wheel are fixed on the fourth fixing plate from front to back respectively, and the tension sensor shaft is the second rotating wheel.

[0026] Beneficial effects: The arrangement of the first, second, and third rotating wheels facilitates the routing of the carbon fiber belt. By setting the second rotating wheel as the tension sensor shaft, the first and third rotating wheels in the front-to-back direction can make the carbon fiber belt on both sides of the second rotating wheel more evenly stressed, thereby making the real-time tension of the carbon fiber belt detected by the tension sensor shaft more accurate.

[0027] The second bracket includes a horizontally arranged fifth fixing plate and a sixth fixing plate fixed to the end of the fifth fixing plate. The first slide rail is fixed to the fifth fixing plate, and the first drive structure is fixed to the front end of the fifth fixing plate. The gripper structure includes a support rod that extends in the front-rear direction and is fixedly connected to the first guide member, and a gripper head fixed to the support rod away from the first guide member.

[0028] Beneficial effects: It enables the gripper head to move smoothly in the front-back direction under the drive of the first guide and support rod, thereby driving the carbon fiber belt clamped by the gripper head to move in the front-back direction.

[0029] A seventh fixing plate is fixedly fixed on the second fixing plate. The seventh fixing plate includes a first fixing segment extending in the vertical direction, a second fixing segment perpendicularly fixed to the first fixing segment, and a third fixing segment perpendicularly fixed to the second fixing segment. The first clamping structure includes a first cylinder fixed on the third fixing segment. A first pressure plate is fixed at the lower end of the first cylinder. A second pressure plate is fixed on the second fixing plate. The first pressure plate and the second pressure plate are arranged correspondingly in the vertical direction.

[0030] Beneficial effects: The seventh fixing plate can facilitate the fixing of the first cylinder while avoiding the carbon fiber belt passing directly below the first cylinder, and will not interfere with the movement of the carbon fiber belt in the front and back directions.

[0031] The second slide rail is fixed below the second fixed plate, the second drive member is fixed to the right end of the second slide rail, the second guide member is fixed with a first fixed frame, and the second clamping structure includes a second cylinder fixed to the upper part of the first fixed frame, a second pressure plate fixed to the lower end of the piston rod of the first cylinder, a third cylinder fixed to the lower part of the first fixed frame, and a third pressure plate fixed to the upper end of the piston rod of the third cylinder. The second cylinder and the third cylinder are arranged vertically and vertically correspondingly.

[0032] Beneficial effects: The second clamping structure is set relative to the second guide member. While the second clamping structure clamps the carbon fiber strip, it can also move the cut carbon fiber strip left and right under the action of the left and right movement of the second guide member after the carbon fiber strip is cut, thereby realizing the weaving of the carbon fiber strip as weft and warp.

[0033] Furthermore, the shearing mechanism includes a guide rail fixed on the first fixed frame, a sliding seat adapted to guide and slide with the guide rail, a telescopic cylinder fixed on the first fixed frame and fixedly connected to the sliding seat, and an electric shear fixed on the fixed seat.

[0034] Beneficial effect: The shearing mechanism can cut the carbon fiber strip between the first clamping structure and the second clamping structure when the first clamping structure, the second clamping structure and the third clamping structure clamp the carbon fiber strip at the same time.

[0035] Furthermore, the first fixing frame includes a first mounting plate fixed on the second guide member, a second mounting plate extending vertically fixed on the right side of the first mounting plate, a third mounting plate fixed on the upper left side of the second mounting plate, and a fourth mounting plate fixed on the middle right side of the second mounting plate. The second cylinder is fixed on the third mounting plate, and the third cylinder is fixed on the first mounting plate. The guide rail is horizontally fixed on the fourth mounting plate.

[0036] Beneficial effects: The setting of the first fixing frame facilitates the setting of the second clamping structure, ensures that the shearing structure is located between the first clamping structure and the second clamping structure, and avoids interference with the forward and backward movement of the carbon fiber belt.

[0037] The second bracket also includes an eighth fixing plate that extends in the left-right direction and is fixed to the lower end of the sixth fixing plate. The third slide rail is fixed to the eighth fixing plate. A second fixing frame is fixed on the third guide. The third clamping structure includes a fourth cylinder fixed to the upper part of the second fixing frame, a fourth pressure plate fixed to the lower end of the piston rod of the fourth cylinder, a fifth cylinder fixed to the lower part of the second fixing frame, and a fifth pressure plate fixed to the upper end of the piston rod of the fifth cylinder. The fourth cylinder and the fifth cylinder are arranged vertically corresponding to each other.

[0038] Beneficial effects: The third clamping structure can conveniently clamp and fix the carbon fiber tape. The third clamping structure is fixed to the third guide member through the second fixing frame. After the carbon fiber tape is cut, under the action of the third guide member, the cut carbon fiber tape can move as weft yarn in the left and right direction to be woven with the warp yarn.

[0039] Furthermore, the second fixing frame includes a fifth mounting plate, a sixth mounting plate fixed to the front side of the fifth mounting plate, a seventh mounting plate fixed to the right side of the fifth mounting plate and extending in the vertical direction, and an eighth mounting plate fixed to the left side of the seventh mounting plate. The fourth cylinder is fixed on the eighth mounting plate, and the fifth cylinder is fixed on the sixth mounting plate.

[0040] Beneficial effects: The second fixed frame structure is simple to set up. While it is convenient to fix the third clamping structure and the third guide member relatively, it can also avoid the movement of the carbon fiber belt in the front and back directions. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a carbon fiber spreading fiber weft feeding mechanism according to the present invention;

[0042] Figure 2 yes Figure 1 A schematic diagram of another perspective of a carbon fiber spreading fiber weft feeding mechanism.

[0043] Reference numerals: 1-First roller; 2-Second roller; 3-Third roller; 4-First fixed plate; 5-Feeding tray; 6-Air shaft; 7-Fourth fixed plate; 8-First cylinder; 9-Second cylinder; 10-Second pressing plate; 11-Second drive structure; 12-Eighth mounting plate; 13-Support rod; 14-First guide; 15-First slide rail; 16-Sixth fixed plate; 17-Eighth fixed plate; 18-Gripper head; 19-Carbon fiber belt; 20-Third cylinder; 21-Third... 22-Second gasket; 23-Third slide rail; 24-Fifth mounting plate; 25-Fifth pressing plate; 26-Seventh mounting plate; 27-Fourth pressing plate; 28-Fourth cylinder; 29-Fifth cylinder; 30-Guide rail; 31-Fourth mounting plate; 32-Second mounting plate; 33-Third mounting plate; 34-Seventh fixing plate; 35-Third fixing plate; 36-Isolation column; 37-Brake; 38-Second fixing plate; 39-Electric scissors; 40-Sliding seat; 41-Telescopic cylinder. Detailed Implementation

[0044] The carbon fiber spreading fiber weft feeding mechanism of the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments:

[0045] as follows Figure 1 and Figure 2 As shown, a carbon fiber spreading fiber weft feeding mechanism of the present invention includes a first support and a second support spaced apart in the front-to-back direction. The first support is equipped with a feeding tray 5 and a rotating shaft assembly for unwinding the carbon fiber strip 19. The first support also includes a first clamping structure, a second clamping structure, a shearing structure, and a second sliding module. The second clamping structure and the shearing structure are mounted on the second sliding module. The second support includes a first sliding module, a gripper structure, a third clamping structure, and a third sliding module. The first sliding module enables the gripper structure to clamp the end of the carbon fiber strip 19. The carbon fiber strip 19 is unwound in the front-to-back direction. The first clamping structure, the second clamping structure, and the third clamping structure are used to clamp the carbon fiber strip 19 unwound in the front-to-back direction. The shearing structure located between the first clamping structure and the second clamping structure cuts the unwound carbon fiber strip 19, so that the carbon fiber strip 19 is tensioned between the second clamping structure and the third clamping structure. Then, under the action of the second sliding module and the third sliding module, the carbon fiber strip 19 located between the second clamping structure and the third clamping structure moves as the weft yarn in the left-to-right direction, so as to realize the weft yarn and the warp yarn weaving.

[0046] Specifically, the feeding tray 5 is rotatably mounted relative to the first support. The first support includes a horizontally mounted first fixing plate 4 and a horizontally mounted second fixing plate 38 fixed to the front side of the first fixing plate 4. A vertically mounted third fixing plate 35 is fixed to the rear side of the first fixing plate 4. A through hole is provided on the third fixing plate 35, and a bearing is installed in the through hole. The rotating shaft of the feeding tray 5 passes through the bearing and is fixed relative to the inner ring of the bearing. In this embodiment, the rotating shaft of the feeding tray 5 is an air expansion shaft 6. The structure and principle of the air expansion shaft 6 are existing technologies and will not be described in detail here. The carbon fiber strip 19 is wound in a coil on the feeding tray 5. A partition column 36 extending in the left-right direction is fixedly provided on the side of the third fixed plate 35 away from the unloading tray 5. In this embodiment, four partition columns 36 are provided. The brake 37 is fixed at the end of the partition column 36 away from the third fixed plate 35, and the brake 37 is connected to the air shaft 6 through a coupling to control the rotation speed of the air shaft 6, thereby controlling the unwinding speed of the unloading tray 5. In this embodiment, the brake 37 is a magnetic powder brake. The structure and principle of the magnetic powder brake are existing technologies and will not be described in detail here.

[0047] The rotating shaft assembly is fixed relative to the first bracket. The rotating shaft assembly includes three rotating shafts that are spaced apart in the front-to-back direction and staggered vertically. In this embodiment, one of the three rotating shafts is a tension sensor rotating shaft. To facilitate the installation of the rotating shafts, in this embodiment, a vertically arranged fourth fixing plate 7 is fixed to the right side of the first fixing plate 4. The fourth fixing plate 7 is fixed with a first rotating wheel 1, a second rotating wheel 2, and a third rotating wheel 3 from front to back. The second rotating wheel 2 is on top, and the first rotating wheel 1 and the third rotating wheel 3 are on the bottom and at the same height. In this embodiment, the tension sensor rotating shaft is the second rotating wheel 2. The carbon fiber strip 19 unwound from the unwinding tray 5 passes around the rotating shaft assembly in an S-shape.

[0048] A first clamping structure is provided on the first support, which is used to clamp the unwound carbon fiber strip 19. Specifically, a seventh fixing plate 34 is fixed on the second fixing plate 38 of the first support. The seventh fixing plate 34 includes a first fixing section extending in the vertical direction, a second fixing section perpendicularly fixed to the first fixing section, and a third fixing section perpendicularly fixed to the second fixing section. The lower end of the first fixing section is fixed on the second fixing plate 38. The first fixing section, the second fixing section, and the third fixing section form a Z-shaped structure. The first clamping structure includes a first cylinder 8 fixed on the third fixing section. The first cylinder 8 is arranged in the vertical direction. A first pressure plate is fixed to the lower end of the piston rod of the first cylinder 8. A second gasket 22 is fixed on the second fixing plate 38. The first pressure plate and the second gasket 22 are arranged correspondingly in the vertical direction. When the first clamping structure is needed to clamp and fix the carbon fiber strip 19, the first cylinder 8 is activated, the piston rod of the first cylinder 8 extends, and the first pressure plate moves downward relative to the second pad 22 to press the carbon fiber strip 19 that passes between the first pressure plate and the second pad 22.

[0049] A second sliding module is provided on the first bracket. The second sliding module includes a second slide rail fixed on the first bracket and extending in the left-right direction, a second guide member that slides and cooperates with the second slide rail, and a second drive structure 11 that is drivenly connected to the second guide member to realize the movement of the second guide member on the second slide rail. Specifically, the second slide rail is fixed below the second fixing plate 38 of the first bracket, and the second drive member is fixed at the right end of the second slide rail. Under the action of the second drive structure 11, the second guide member can move left and right along the second slide rail.

[0050] In this embodiment, the second clamping structure is disposed in front of the first clamping structure. The second clamping structure is used to clamp the carbon fiber strip 19. The second clamping structure is mounted on the first bracket. Specifically, a first fixing frame is fixed to the second guide of the second sliding module. The first fixing frame includes a first mounting plate fixed to the second guide, a second mounting plate 32 extending vertically fixed to the right side of the first mounting plate, a third mounting plate 33 fixed to the upper left side of the second mounting plate 32, and a fourth mounting plate 31 fixed to the middle right side of the second mounting plate 32. The second clamping structure includes a second cylinder 9 fixed to the upper part of the first fixing frame, a second pressure plate 10 fixed to the lower end of the piston rod of the second cylinder 9, a third cylinder 20 fixed to the lower part of the first fixing frame, and a third pressure plate 21 fixed to the upper end of the piston rod of the third cylinder 20. The second cylinder 9 and the third cylinder 20 are vertically corresponding. Specifically, the second cylinder 9 is fixed to the front side of the third mounting plate 33, and the third cylinder 20 is fixed to the front side of the first mounting plate. When the first clamping structure clamps the carbon fiber strip, the third cylinder acts first, causing the third pressure plate to move upward to the same height as the second pad. Then the second cylinder acts next, causing the second pressure plate to move downward and clamp relative to the third pressure plate.

[0051] The shearing structure is located on the rear side of the fourth mounting plate 31 of the first fixed frame, thus positioning the shearing structure between the first clamping structure and the second clamping structure. Specifically, the shearing structure includes a horizontally arranged guide rail 30 fixed on the rear side of the fourth mounting plate 31, a sliding seat 40 adapted to guide and slide with the guide rail 30, a telescopic cylinder 41 fixed on the first fixed frame and fixedly connected to the sliding seat 40, and an electric scissors 39 fixed on the fixed seat. In this embodiment, the electric scissors 39 can perform opening and closing actions as needed. The structure and principle of the electric scissors 39 are existing technologies and will not be described in detail here. Since the shearing structure is located on the fourth mounting plate 31 of the first fixed frame, the shearing structure can move in the left and right directions along with the second guide member in the second sliding module. In addition, since the shearing structure includes the telescopic cylinder 41, the electric scissors 39 in the shearing structure can move along the guide rail 30 under the action of the telescopic cylinder 41, thereby facilitating the electric scissors 39 to cut the carbon fiber strip 19.

[0052] In this invention, the second cylinder 9 and the third cylinder 20 are located on the left side of the second mounting plate 32 of the first fixed frame, and the shearing structure is located on the right side of the second mounting plate 32 of the first fixed frame. This structural arrangement can maintain the installation stability of the first fixed frame.

[0053] The second support is arranged correspondingly to the first support. The second support has a first sliding module, which includes a first slide rail 15 fixed to the second support and extending in the front-back direction, a first guide member 14 adapted to slide along the first slide rail 15, and a first drive structure connected to the first guide member 14 to move the first guide member 14 on the first slide rail 15. The second support includes a horizontally arranged fifth fixed plate and a sixth fixed plate 16 fixed to the end of the fifth fixed plate. The first slide rail 15 is fixed to the fifth fixed plate, and the first drive structure is fixed to the front end of the fifth fixed plate. The gripper structure includes a support rod 13 fixedly connected to the first guide member 14 and extending in the front-back direction, and a gripper head 18 fixed to the support rod 13 away from the first guide member 14. Under the action of the first drive structure, the first guide member 14 moves along the first slide rail 15, thereby allowing the gripper head 18 to move in the front-back direction to clamp the end of the carbon fiber strip 19 under the connection of the support rod 13. In this embodiment, the gripper head 18 is existing technology; any gripper structure capable of automatic clamping or loosening is acceptable.

[0054] A third sliding module is provided on the second bracket. The third sliding module includes a third slide rail 23 fixed on the second bracket and extending in the left-right direction, a third guide member that is guided and slidably adapted to the third slide rail 23, and a third drive structure that is drivenly connected to the third guide member to realize the movement of the third guide member on the third slide rail 23. Under the action of the third drive structure, the third guide member can move along the third slide rail 23. In order to facilitate the installation of the third sliding module, in this embodiment, the second bracket also includes an eighth fixing plate 17 fixed to the lower end of the sixth fixing plate 16 and extending in the left-right direction, and the third slide rail 23 is fixed on the eighth fixing plate 17.

[0055] A third clamping structure is provided on the third guide member of the third sliding module, and the third clamping structure is located in front of the second clamping structure. Specifically, a second fixing frame is fixed on the third guide member. The third clamping structure includes a fourth cylinder 28 fixed on the upper part of the second fixing frame, a fourth pressure plate 27 fixed on the lower end of the piston rod of the fourth cylinder 28, a fifth cylinder 29 fixed on the lower part of the second fixing frame, and a fifth pressure plate 25 fixed on the upper end of the piston rod of the fifth cylinder 29. The fourth cylinder 28 and the fifth cylinder 29 are arranged vertically and vertically respectively. The second fixing frame includes a horizontally arranged fifth mounting plate 24, a sixth mounting plate (not shown in the figure) fixed on the front side of the fifth mounting plate 24, a seventh mounting plate 26 fixed on the right side of the fifth mounting plate 24 extending in the vertical direction, and an eighth mounting plate 12 fixed on the left side of the seventh mounting plate 26. The fourth cylinder 28 is fixed on the eighth mounting plate 12, and the fifth cylinder 29 is fixed on the sixth mounting plate. When the third clamping structure clamps the carbon fiber strip, the fifth cylinder acts first, driving the fifth pressure plate upward and making the fifth pressure plate the same height as the second pad. Then the fourth cylinder acts next, driving the fourth pressure plate downward and clamping the fourth pressure plate relative to the fifth pressure plate.

[0056] In this embodiment, to prevent the carbon fiber strip 19 from being squeezed by the pressure plate, and to ensure that it has a large frictional force without damaging the carbon fiber strip 19, the pressure plate is made of polyurethane (PU) elastomer.

[0057] In this embodiment, the second slide rail in the second sliding module and the third slide rail 23 in the third sliding module are arranged in a corresponding manner, which facilitates the weft feeding action by moving the cut carbon fiber in the left and right directions.

[0058] In this embodiment, the action of the weft feeding mechanism is controlled by a control device. The control device is connected to the first drive structure, the second drive structure 11, the third drive structure, the first cylinder 8, the second cylinder 9, the third cylinder 20, the fourth cylinder 28, the fifth cylinder 29, the telescopic cylinder 41, the electric scissors 39, the gripper head 18, the magnetic powder brake, etc. The control is existing technology and will not be described in detail here.

[0059] In use, the carbon fiber spreading fiber weft feeding mechanism of the present invention involves winding the carbon fiber strip 19 wound on the unwinding tray 5 in an S-shape around the rotating shaft, and clamping the ends of the carbon fiber strip 19 with the gripper structure. Under the action of the first driving structure of the first sliding module, the first guide member 14 of the first sliding module moves along the first slide rail 15, thereby moving the gripper head 18 of the gripper structure in the front-back direction to achieve unwinding of the carbon fiber strip 19. The tension sensor in the rotating shaft detects the real-time tension of the carbon fiber strip 19 and feeds the measured tension back to the magnetic powder brake 37. The magnetic powder brake 37 controls the rotation speed of the rotating shaft of the unwinding tray 5, thereby controlling the unwinding speed of the carbon fiber strip 19 on the unwinding tray 5, ensuring that the carbon fiber strip 19 is unwound at a uniform speed and that the tension is uniform during the unwinding process, achieving constant tension unwinding during the weaving process. Thus, when the carbon fiber strip 19 is used as weft and warp yarns for weaving, the uniformity of the mesh formed by the warp and weft yarns can be guaranteed.

[0060] In addition, the carbon fiber strip 19 is clamped by the gripper structure and pulled sequentially through the first clamping structure, the second clamping structure, and the third clamping structure under the action of the first sliding module. The first clamping structure, the second clamping structure, and the third clamping structure clamp the unwound carbon fiber strip 19 respectively. The cutting structure cuts the carbon fiber strip 19 between the first clamping structure and the second clamping structure. The cut carbon fiber strip 19 is clamped between the second clamping structure and the third clamping structure. At this time, the first clamping structure clamps the end of the remaining carbon fiber strip 19. Then, under the combined action of the second sliding mold assembly and the third sliding mold assembly, the carbon fiber strip 19 extending in the front-back direction is moved from right to left, so that the carbon fiber strip 19 is woven into a mesh structure as weft yarn and warp yarn. Then, the first drive structure of the first sliding module extends again, so that the gripper head 18 of the gripper structure moves backward to clamp the carbon fiber end on the front side of the first clamping structure, realizing the automatic gripping of the end of the carbon fiber strip 19 by the gripper head 18, and cutting and weaving the next carbon fiber strip 1+ (weft yarn). That is, the weft feeding mechanism in this invention can realize the automatic clamping, automatic cutting, and automatic weft feeding of carbon fiber tape 19.

[0061] In the above embodiments, the first bracket includes a horizontally arranged first fixing plate, a horizontally arranged second fixing plate fixed to the front side of the first fixing plate, and a vertically arranged third fixing plate fixed to the rear side of the first fixing plate. The third fixing plate has a through hole, and a bearing is installed in the through hole. The rotating shaft of the feeding tray passes through the bearing. The rotating shaft of the feeding tray is an air-expanding shaft. An isolation column is fixedly installed on the side of the third fixing plate opposite to the feeding tray. The brake is fixedly connected to the isolation column and is drivenly connected to the air-expanding shaft. In other embodiments, the rotating shaft of the feeding tray can also be a regular rotating shaft; or the isolation column can be omitted. In this case, a mounting plate is fixed on the side of the third fixing plate opposite to the feeding tray, and the brake is fixed on the mounting plate.

[0062] In the above embodiments, the first fixing frame includes a first mounting plate fixed on the second guide member, a second mounting plate extending vertically fixed on the right side of the first mounting plate, a third mounting plate fixed on the upper left side of the second mounting plate, and a fourth mounting plate fixed on the middle right side of the second mounting plate. The second cylinder is fixed on the third mounting plate, and the third cylinder is fixed on the first mounting plate. The guide rail is horizontally fixed on the fourth mounting plate. In other embodiments, the first fixing frame may also be of other structural forms.

[0063] In the above embodiments, the second fixing frame includes a fifth mounting plate, a sixth mounting plate fixed to the front side of the fifth mounting plate, a seventh mounting plate fixed to the right side of the fifth mounting plate and extending in the vertical direction, and an eighth mounting plate fixed to the left side of the seventh mounting plate. The fourth cylinder is fixed on the eighth mounting plate, and the fifth cylinder is fixed on the sixth mounting plate. In other embodiments, the second fixing frame may also be of other structural forms.

Claims

1. A carbon fiber spreading fiber weft feeding mechanism, characterized in that, include: First support; Feed tray: Rotatably set relative to the first support; Brake: Fixed relative to the first bracket, the brake is connected to the rotating shaft of the feeding disc to adjust the rotation speed of the feeding disc; Rotary shaft assembly: Fixed relative to the first bracket, the rotary shaft assembly includes three rotary shafts that are spaced apart in the front-to-back direction and staggered vertically, one of which is a tension sensor rotary shaft; Second bracket: Set in a corresponding manner to the first bracket; The second bracket is provided with a first sliding module. The first sliding module includes a first slide rail fixed on the second bracket and extending in the front-back direction, a first guide member adapted to slide along the first slide rail, and a first drive structure that is connected to the first guide member to realize the movement of the first guide member on the first slide rail. Gripper structure: Fixed relative to the first guide member, the gripper structure is used to clamp the end of the carbon fiber; First clamping structure: It is disposed between the rotating shaft assembly and the second bracket in the front-back direction. The first clamping structure is used to clamp carbon fiber. The first clamping structure is mounted on the first bracket. Second clamping structure: It is spaced out on the front side of the first clamping structure and is used to clamp carbon fiber. Third clamping structure: It is spaced out in front of the second clamping structure and is used to clamp carbon fiber. Second sliding module: disposed on the first bracket, the second sliding module includes a second slide rail fixed on the first bracket and extending in the left and right direction, a second guide member adapted to guide and slide the second slide rail, and a second drive structure that is drivenly connected to the second guide member to realize the movement of the second guide member on the second slide rail; The second clamping structure is disposed on the second guide member; Third sliding module: set on the second bracket, the third sliding module includes a third slide rail fixed on the second bracket and extending in the left and right direction, a third guide member adapted to guide the sliding of the third slide rail, and a third drive structure that is connected to the third guide member to realize the movement of the third guide member on the third slide rail. The third clamping structure is disposed on the third guide member; Shearing structure: disposed between the first clamping structure and the second clamping structure in the front-to-back direction, the shearing structure being mounted on the second guide member.

2. The carbon fiber spreading fiber weft feeding mechanism according to claim 1, characterized in that, The first bracket includes a horizontally arranged first fixing plate, a horizontally arranged second fixing plate fixed to the front side of the first fixing plate, and a vertically arranged third fixing plate fixed to the rear side of the first fixing plate. The third fixing plate has a through hole, and a bearing is installed in the through hole. The rotating shaft of the feeding tray passes through the bearing. The rotating shaft of the feeding tray is an air expansion shaft. An isolation column is fixedly arranged on the side of the third fixing plate opposite to the feeding tray. The brake is fixedly connected to the isolation column and is drivenly connected to the air expansion shaft.

3. The carbon fiber spreading fiber weft feeding mechanism according to claim 2, characterized in that, A vertically arranged fourth fixing plate is fixed on the first fixing plate. A first rotating wheel, a second rotating wheel, and a third rotating wheel are fixed on the fourth fixing plate from front to back respectively. The tension sensor shaft is the second rotating wheel.

4. A carbon fiber spreading fiber weft feeding mechanism according to any one of claims 1-3, characterized in that, The second bracket includes a horizontally arranged fifth fixing plate and a sixth fixing plate fixed to the end of the fifth fixing plate. The first slide rail is fixed to the fifth fixing plate, and the first drive structure is fixed to the front end of the fifth fixing plate. The gripper structure includes a support rod extending in the front-rear direction and fixedly connected to the first guide member, and a gripper head fixed to the support rod away from the first guide member.

5. A carbon fiber spreading fiber weft feeding mechanism according to any one of claims 2 or 3, characterized in that, A seventh fixing plate is fixed on the second fixing plate. The seventh fixing plate includes a first fixing segment extending in the vertical direction, a second fixing segment perpendicularly fixed to the first fixing segment, and a third fixing segment perpendicularly fixed to the second fixing segment. The first clamping structure includes a first cylinder fixed on the third fixing segment. A first pressure plate is fixed to the lower end of the first cylinder. A second gasket is fixed on the second fixing plate. The first pressure plate and the second gasket are arranged correspondingly in the vertical direction.

6. A carbon fiber spreading fiber weft feeding mechanism according to claim 2 or 3, characterized in that, The second slide rail is fixed below the second fixed plate, the second drive component is fixed to the right end of the second slide rail, the second guide component is fixed with a first fixed frame, and the second clamping structure includes a second cylinder fixed to the upper part of the first fixed frame, a second pressure plate fixed to the lower end of the piston rod of the second cylinder, a third cylinder fixed to the lower part of the first fixed frame, and a third pressure plate fixed to the upper end of the piston rod of the third cylinder. The second cylinder and the third cylinder are arranged vertically and vertically correspondingly.

7. The carbon fiber spreading fiber weft feeding mechanism according to claim 6, characterized in that, The shearing structure includes a guide rail fixed on a first fixed frame, a sliding seat adapted to guide and slide on the guide rail, a telescopic cylinder fixed on the first fixed frame and fixedly connected to the sliding seat, and an electric shears fixed on the fixed seat.

8. The carbon fiber spreading fiber weft feeding mechanism according to claim 7, characterized in that, The first fixed frame includes a first mounting plate fixed on the second guide member, a second mounting plate extending vertically fixed on the right side of the first mounting plate, a third mounting plate fixed on the upper left side of the second mounting plate, and a fourth mounting plate fixed on the middle right side of the second mounting plate. The second cylinder is fixed on the third mounting plate, and the third cylinder is fixed on the first mounting plate. The guide rail is horizontally fixed on the fourth mounting plate.

9. The carbon fiber spreading fiber weft feeding mechanism according to claim 4, characterized in that, The second bracket also includes an eighth fixing plate that extends in the left-right direction and is fixed to the lower end of the sixth fixing plate. The third slide rail is fixed to the eighth fixing plate. A second fixing frame is fixed on the third guide. The third clamping structure includes a fourth cylinder fixed to the upper part of the second fixing frame, a fourth pressure plate fixed to the lower end of the piston rod of the fourth cylinder, a fifth cylinder fixed to the lower part of the second fixing frame, and a fifth pressure plate fixed to the upper end of the piston rod of the fifth cylinder. The fourth cylinder and the fifth cylinder are arranged vertically corresponding to each other.

10. A carbon fiber spreading fiber weft feeding mechanism according to claim 9, characterized in that, The second fixing frame includes a fifth mounting plate, a sixth mounting plate fixed to the front side of the fifth mounting plate, a seventh mounting plate fixed to the right side of the fifth mounting plate and extending in the vertical direction, and an eighth mounting plate fixed to the left side of the seventh mounting plate. The fourth cylinder is fixed on the eighth mounting plate, and the fifth cylinder is fixed on the sixth mounting plate.

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