Biaxial weft knitting machine based on carbon fiber knitting and knitting method

Abstract

The invention relates to the technical field of knitting, and particularly discloses a biaxial weft knitting machine based on carbon fiber knitting, which comprises a machine body, a pull-down assembly arranged at the bottom of the machine body, a warp plate fixedly connected to the top of the machine body, and mounting plates fixedly connected to both sides of the interior of the machine body, and is characterized in that the biaxial weft knitting machine also comprises a weft feeding assembly, the weft feeding assembly is arranged on the inner side of the machine body, the weft feeding assembly comprises a mounting frame fixedly connected between the two mounting plates, belt wheels are rotationally connected to the two sides of the interior of the mounting frame, and the straightening assembly is arranged on the left portion of the machine body. Compared with a conventional one-coming and one-returning weft traction mode, the weft conveying efficiency is improved, meanwhile, the limiting cylinder moves to the left side to pull the weft, it is guaranteed that the weft is in a straightened state, and it is guaranteed that the weft is in the straightened state during follow-up binding, and uneven yarn cannot form uniform grids.

Description

Technical Field

[0001] This invention relates to the field of weaving technology, and in particular to a biaxial weft weaving machine and weaving method based on carbon fiber weaving. Background Technology

[0002] Carbon fiber weaving is a technology that uses a specific weaving process to make high-performance carbon fiber yarns into two-dimensional fabrics or three-dimensional structures. Its core lies in utilizing the high strength, high modulus, and low density of carbon fiber, combined with the mechanical advantages of the woven structure, to achieve a fusion of lightweight and high strength.

[0003] For example, the "wide-width carbon fiber weaving machine" with publication number "CN203639647U" can effectively improve the mesh weaving efficiency of expanded carbon fiber filament tape, solving the problem that the weaving of expanded carbon fiber filament tape requires pure manual production.

[0004] Biaxial weft knitting machine is an advanced piece of equipment capable of producing knitted fabrics with extremely high strength and dimensional stability in both the warp and weft directions. Traditional weft conveying mechanisms require back-and-forth conveying of the weft yarns, resulting in poor weft yarn conveying efficiency. Furthermore, after the weft yarns are conveyed, they may be bent or uneven. In the subsequent knitting process, the uneven yarns cannot form a uniform mesh, affecting the quality of the subsequent fabric. Summary of the Invention

[0005] The purpose of this invention is to provide a biaxial weft knitting machine based on carbon fiber weaving, which enables the weft yarn to be transported in a single stroke. Compared with the conventional method of pulling the weft yarn back and forth, this improves the efficiency of weft yarn transport. At the same time, the limiting cylinder moves to the left to pull the weft yarn, ensuring that the weft yarn is in a taut state. This ensures that the weft yarn is in a taut state during subsequent binding, and that uneven yarns cannot form a uniform mesh, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a biaxial weft knitting machine based on carbon fiber weaving, comprising a machine body, a pull-down assembly configured at the bottom of the machine body, a warp plate fixedly connected to the top of the machine body, and mounting plates fixedly connected to both sides of the interior of the machine body, characterized in that the biaxial weft knitting machine further comprises: The weft feeding assembly is located inside the machine body. The weft feeding assembly includes a mounting frame fixedly connected between two mounting plates. Both sides of the inner side of the mounting frame are rotatably connected to pulleys. A synchronous belt is connected between the two pulleys. The front and rear ends of the synchronous belt are fixedly connected to slides. The top of the slide is equipped with a wire clamping part. A straightening assembly is located on the left side of the machine body. The straightening assembly includes a long rod fixedly connected to the right side of the mounting plate on the left side. A sliding frame is slidably connected to the outside of the long rod. Limiting cylinders are provided at both the top and bottom ends of the inner side of the sliding frame. An installation tube is rotatably connected inside the limiting cylinder. The outer wall of the installation tube is fixedly connected to the sliding frame. A first spring is fixedly connected between the sliding frame and the mounting plate on the left side. A motion frame is fixedly connected to the bottom of the sliding frame. Extrusion strips are fixedly connected to the left side of both sliding blocks.

[0007] Preferably, the clamping part includes an electric telescopic rod fixedly connected inside the slide, a fixed plate fixedly connected to the top of the electric telescopic rod, a clamping frame slidably connected to the side of the fixed plate near the middle of the machine body, and an opening provided on the side of the clamping frame away from the fixed plate.

[0008] Preferably, a motor is fixedly connected to the bottom left side of the mounting frame, and the output shaft of the motor passes through the mounting frame and is fixedly connected to the pulley on the left side. When the output shaft of the motor rotates, the pulley rotates and causes the synchronous belt to move.

[0009] Preferably, the clamping part further includes a limiting frame fixedly connected to the top of the slide block, a bottom block fixedly connected to the bottom of the clamping frame, an arc groove opened on the side of the bottom block, and a round shaft for reducing motion friction rotatably connected to the end of the limiting frame near the arc groove.

[0010] Preferably, the clamping frame is internally configured with an adjustment assembly, which includes a bent frame fixedly connected to the end of the fixed plate, a small plate fixedly connected inside the clamping frame, a corrugated bladder fixedly connected between the bent frame and the small plate, a medium bladder fixedly connected to both the top and bottom ends of the opening of the clamping frame, a round tube fixedly inserted into the side of the corrugated bladder, an elastic flexible bladder fixedly connected to the round tube away from the medium bladder, a branch tube frame fixedly inserted between the flexible bladder and the medium bladder, and a second spring fixedly connected between the fixed plate and the small plate.

[0011] Preferably, the inner annular array of the branch pipe rack is fixedly connected with ribs, and the outer side of the ribs and the branch pipe rack are fixedly connected with an elastic membrane.

[0012] Preferably, a limiting component is provided on the left side of the body. The limiting component includes an elastic bladder fixedly connected to the top and bottom of the inner side of the sliding frame. A compression plate is provided on the left side of the elastic bladder. The outer side of the compression plate is slidably connected to the sliding frame. A flexible anti-slip pad is fixedly connected to the outer side of the limiting cylinder.

[0013] Preferably, a dust collection component is provided on the left side of the machine body. The dust collection component includes an air suction pipe that is fixedly inserted into the mounting plate on the left side. The air suction pipe is fixedly connected to the front end of the mounting pipe. The bottom of the mounting pipe is provided with a ventilation groove inside the limiting cylinder.

[0014] Preferably, both the limiting cylinder and the flexible anti-slip pad have ventilation holes on their surfaces, and the ventilation holes of the limiting cylinder and the flexible anti-slip pad are positioned correspondingly.

[0015] A biaxial weft weaving method based on carbon fiber weaving includes the following steps: S1. Two or more sets of warp yarns are straightened and unbent in the longitudinal direction and enter the weaving area, forming a V-shaped opening above the machine body; S2. Introduce the two sets of weft yarns into the weaving area from the outside of the warp yarns in a straight, unbent state. S3. The weft yarn is looped while the warp yarn is not looped, thus achieving weft and warp interlocking. S4. After weaving a horizontal row of yarn, repeat steps S1-S3 to weave back and forth.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the design of the weft feeding component, the weft can be transported once in a single movement, which improves the efficiency of weft transport compared to the conventional method of pulling the weft back and forth. 2. The limiting cylinder moves to the left to pull the weft yarn, ensuring that the weft yarn is taut. This ensures that the weft yarn is taut during subsequent binding. Unstraight yarns cannot form a uniform mesh, causing fluctuations in fiber content in local areas. Keeping the weft yarn taut can improve the quality of the subsequent fabric. 3. Ventilation holes are provided on the surfaces of the limiting cylinder and the flexible anti-slip pad to absorb dust on the weft yarn, preventing dust from causing problems. After dust absorption, the yarn path is unobstructed and the coefficient of friction is stable, providing a basis for maintaining the "straight and non-bent" state of the weft yarn. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an overall structural view of the present invention; Figure 2 This is a partial structural diagram of the mounting frame of the present invention; Figure 3 This is a half-sectional view of the mounting frame of the present invention; Figure 4 This is a partial structural diagram of the synchronous belt of the present invention; Figure 5 This is a top view of the pull-down component of the present invention; Figure 6 This is a partial cross-sectional view of the pull-down component of the present invention; Figure 7 This is a side view of the mounting plate of the present invention. Figure 8 This is a side sectional view of the mounting frame of the present invention; Figure 9 This is a side view of the clamping part on the slide near the middle of the body of the present invention. Figure 10 This is a side view of the clamping section on the slide block of the present invention, located away from the center of the machine body; Figure 11 This is a side cross-sectional view of the medium capsule of the present invention; Figure 12 This is a side sectional view of the sliding frame of the present invention; Figure 13 This is a half-sectional schematic diagram of the sliding frame of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Machine body; 2. Pull-down assembly; 3. Warp plate; 4. Mounting plate; 5. Weft feed assembly; 51. Mounting frame; 52. Pulley; 53. Synchronous belt; 54. Slide; 55. Thread clamping part; 551. Electric telescopic rod; 552. Fixing plate; 553. Clamping frame; 554. Limiting frame; 555. Base block; 556. Arc groove; 557. Round shaft; 56. Motor; 6. Straightening assembly; 61. Long rod; 62. Sliding frame; 63. Limiting cylinder; 6 4. Mounting tube; 65. First spring; 66. Movement frame; 7. Adjustment assembly; 71. Bending frame; 72. Small plate; 73. Corrugated bladder; 74. Medium bladder; 75. Round tube; 76. Flexible bladder; 77. Branch tube rack; 78. Second spring; 79. Rib; 710. Elastic membrane; 8. Dust collection assembly; 81. Suction tube; 82. Ventilation groove; 9. Restriction assembly; 91. Elastic bladder; 92. Extrusion plate; 93. Flexible anti-slip pad; 10. Extrusion strip. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 13This invention provides a technical solution: a biaxial weft knitting machine based on carbon fiber weaving, comprising a machine body 1, a pull-down assembly 2 configured at the bottom of the machine body 1, the pull-down assembly 2 including a mounting frame fixedly connected to the bottom inner side of the machine body 1, two traction shafts configured on the inner side of the mounting frame, one of the traction shafts being driven by a motor, and a rotating frame slidably connected to both sides of the other traction shaft, with U-shaped springs fixedly connected between the rotating frame and the two ends of the traction shaft, and two meshing gears respectively configured between the rotating frame away from the motor and the traction shaft connected to the motor, for making the two traction shafts rotate simultaneously, and a soft sponge sleeve configured on the outer side of the two traction shafts.

[0022] The top of the body 1 is fixedly connected to a warp plate 3, which is used to distribute the warp threads and realize the placement of the warp threads.

[0023] The machine body 1 has mounting plates 4 fixedly connected to both sides inside. The biaxial weft knitting machine also includes a weft feeding assembly 5 disposed inside the machine body 1. The weft feeding assembly 5 includes a mounting frame 51 fixedly connected between the two mounting plates 4. Pulleys 52 are rotatably connected to both sides inside the mounting frame 51. A synchronous belt 53 is connected between the two pulleys 52. Slide seats 54 are fixedly connected to the front and rear ends of the synchronous belt 53. A yarn clamping part 55 is disposed on the top of the slide seat 54. The weft feeding assembly 5 also includes a straightening assembly 6 disposed on the left side of the machine body 1. The straightening assembly 6 includes a long rod 61 fixedly connected to the right side of the mounting plate 4 on the left side. A sliding frame 62 is slidably connected to the outside of the long rod 61. The top and bottom of the inner side of the sliding frame 62 are connected to the sliding frame 62. Both ends are equipped with limiting cylinders 63, and the inside of the limiting cylinders 63 is rotatably connected to the mounting tubes 64. The outer wall of the mounting tubes 64 is fixedly connected to the sliding frame 62. The sliding frame 62 is fixedly connected to the mounting plate 4 on the left side with a first spring 65. The bottom of the sliding frame 62 is fixedly connected to the motion frame 66. The left side of the two side slides 54 is fixedly connected to the extrusion strips 10. The bottom left side of the mounting frame 51 is fixedly connected to the motor 56. The output shaft of the motor 56 passes through the mounting frame 51 and is fixedly connected to the pulley 52 on the left side. When the output shaft of the motor 56 rotates, the pulley 52 rotates, causing the synchronous belt 53 to move. Weft feeding components 5 are provided on both sides of the middle position of the machine body 1 to realize weft feeding from both sides of the warp.

[0024] The top of the machine body 1 is equipped with a conveyor rod for conveying braided yarn. The bottom of the conveyor rod slides with the machine body 1. The machine body 1 is also equipped with a motion component for moving the conveyor rod. The conveyor rod can be driven by a screw, which is a mature existing technology and will not be described in detail.

[0025] By adopting the above technical solution, when carbon fiber weaving is required, two sets of warp threads are first distributed at the front and rear warp plates 3. The bottom of the warp threads passes between the two warp plates 3, forming a V-shape. By manually pulling the traction shaft mounted on the rotating frame, the two traction shafts are separated, making it easier to pass the distributed warp threads through this point. Under the elastic force of the U-shaped spring, the two traction shafts clamp the warp threads. At this time, the axis of the traction shaft mounted on the rotating frame is aligned with the axis of the rotating frame. Driven by the motor, the traction shaft rotates. Under the friction of the sponge sleeve on the outside of the traction shaft, the warp threads can be pulled downwards. As weaving progresses, the woven material will reach the traction shaft, thus allowing the woven material to be gradually pulled.

[0026] During weaving, the weft yarn needs to be fed. When feeding the weft yarn, the output shaft of the motor 56 is rotated, which causes the pulley 52 to rotate, thereby causing the synchronous belt 53 to move the slide 54, and the slide 54 to move the yarn clamping part 55.

[0027] It should be noted that the motor 56 is a servo motor, equipped with two sets of slides 54 and a clamping part 55, and the motor 56 uses a reciprocating rotation method to control the movement of the two slides 54. When one slide 54 moves to the left, the other slide 54 moves to the right.

[0028] It should be noted that, in the initial state, the clamping part 55 on the left slide 54 clamps the weft yarn, and then the slide 54 carries the clamping part 55 to the right to transport the weft yarn. In the initial state, the slide 54 on the right moves to the left with the corresponding clamping part 55. When the slide 54 on the right moves to the left with the corresponding clamping part 55, the clamping part 55 clamps the weft yarn, and then the output shaft of the motor 56 rotates in the opposite direction to the previous movement, so that the slide 54 carries the corresponding clamping part 55 to the right to transport the weft yarn. This design allows the weft yarn to be transported once in a single movement, which improves the efficiency of weft yarn transport compared to the conventional back-and-forth pulling method.

[0029] It should be noted that during the conveying of the weft yarn, the extrusion strip 10 installed on the slide block 54 on the left side will compress the motion frame 66, causing the motion frame 66 to move to the left along with the sliding frame 62. At this time, the first spring 65 is in a compressed state, and the limiting cylinder 63 moves to the left to pull the weft yarn, ensuring that the weft yarn is in a taut state. This ensures that the weft yarn is in a taut state during subsequent binding. Unstraight yarns cannot form a uniform mesh, resulting in fluctuations in fiber content in local areas. Keeping the weft yarn taut can improve the quality of the subsequent fabric.

[0030] It should be noted that after one weft feed is completed, the knitting yarn is conveyed from right to left by the conveyor rod, and the knitting yarn, warp and weft are bound together by the knitting needles. This technology is a mature existing technology and will not be described in detail.

[0031] It should be noted that the body 1 is equipped with a structure for cutting the weft thread. After one binding is completed, the weft thread needs to be cut in order to facilitate the next traction of the weft thread. The cutting technology is a mature existing technology and will not be described in detail.

[0032] The wire clamping part 55 includes an electric telescopic rod 551 fixedly connected inside the slide block 54. A fixing plate 552 is fixedly connected to the top of the electric telescopic rod 551. A clamping frame 553 is slidably connected to the side of the fixing plate 552 near the middle of the machine body 1. The clamping frame 553 has an opening on the side away from the fixing plate 552. The wire clamping part 55 also includes a limiting frame 554 fixedly connected to the top of the slide block 54. A bottom block 555 is fixedly connected to the bottom of the clamping frame 553. An arc groove 556 is opened on the side of the bottom block 555. A round shaft 557 for reducing motion friction is rotatably connected to the end of the limiting frame 554 near the arc groove 556. The upper and lower halves of the arc groove 556 are uniform. A second spring 78 is fixedly connected between the fixing plate 552 and the small plate 72.

[0033] By adopting the above technical solution, when the clamping part 55 moves to the right, the electric telescopic rod 551 maintains its initial state, at which time the round shaft 557 is located in the middle part of the arc groove 556.

[0034] When the clamping part 55 moves to the right, the output shaft of the electric telescopic rod 551 extends and retracts. At this time, under the limiting action of the round shaft 557, the clamping frame 553 moves away from the middle position of the machine body 1. At this time, the clamping part 55 does not clamp the right side of the weft thread. When the clamping part 55 is about to complete its movement, the round shaft 557 returns to the middle part of the arc groove 556. At this time, under the elastic force of the second spring 78, the clamping frame 553 resets and clamps the weft thread again in the left side position.

[0035] It should be noted that the electric telescopic rod 551 in the clamping part 55 near the middle of the body 1 retracts when the slide 54 moves to the right, while the electric telescopic rod 551 in the clamping part 55 away from the middle of the body 1 extends when the slide 54 moves to the right. This ensures that the two clamping parts 55 do not interfere with each other when they move.

[0036] The clamping frame 553 is internally equipped with an adjustment component 7, which includes a bent frame 71 fixedly connected to the end of the fixed plate 552. A small plate 72 is fixedly connected inside the clamping frame 553. A corrugated bladder 73 is fixedly connected between the bent frame 71 and the small plate 72. Media bladders 74 are fixedly connected to both the top and bottom ends of the opening of the clamping frame 553. A round tube 75 is fixedly inserted into the side of the corrugated bladder 73. An elastic flexible bladder 76 is fixedly connected to the round tube 75 away from the media bladder 74. A branch tube frame 77 is fixedly inserted between the flexible bladder 76 and the media bladder 74.

[0037] By adopting the above technical solution, when the output shaft of the electric telescopic rod 551 extends or retracts, under the elastic force of the second spring 78, the small plate 72 moves along with the movement of the clamping frame 553. At this time, the corrugated bladder 73 is stretched, and the medium inside the medium bladder 74 enters the corrugated bladder 73. This facilitates the clamping frame 553 to release the weft thread and facilitates the movement of the clamping part 55. It should be noted that the weft thread is a flexible wire bundle, and its end can be slightly bent.

[0038] When the output shaft of the electric telescopic rod 551 is reset, the small plate 72 moves along with the clamping frame 553. At this time, the corrugated bladder 73 is compressed, which allows the medium bladder 74 to expand and clamp the weft yarn. This design ensures that the weft yarn can be continuously pulled.

[0039] It should be noted that after clamping, weaving is then carried out. After weaving, the weft yarn can be cut at the position on the right side of the clamp 553. After cutting, the warp yarn is pulled.

[0040] The branch pipe rack 77 has ribs 79 fixedly connected in an internal annular array. The outer side of the ribs 79 and the branch pipe rack 77 are fixedly connected together with an elastic membrane 710. Both the ribs 79 and the elastic membrane 710 are inclined.

[0041] By adopting the above technical solution, when the clamping part 55 moves to the left position and the output shaft of the electric telescopic rod 551 is reset, the corrugated bladder 73 is compressed under the elastic force of the second spring 78. At this time, under the pressure of the medium flow, the angle of the rib 79 changes, making the opening of the elastic membrane 710 smaller. This slows down the speed at which the medium enters the medium bladder 74. At this time, the elastic flexible bladder 76 expands. When the opening of the clamping frame 553 is fitted on the outside of the weft, the medium inside the elastic flexible bladder 76 gradually enters the medium bladder 74. At this time, the medium bladder 74 can expand to clamp the weft.

[0042] It should be noted that the elastic force of the second spring 78 is much greater than that of the elastic flexible bladder 76.

[0043] Example 2: The technical solution of this example differs from that of Example 1 in that: Figures 1 to 7 and Figures 12 to 13 The left side of the body 1 is equipped with a limiting component 9, which includes an elastic bladder 91 fixedly connected to the top and bottom of the inner side of the sliding frame 62. A compression plate 92 is arranged on the left side of the elastic bladder 91. The outer side of the compression plate 92 is slidably connected to the sliding frame 62. A flexible anti-slip pad 93 is fixedly connected to the outer side of the limiting cylinder 63. The left side of the body 1 is equipped with a dust collection component 8, which includes a suction pipe 81 fixedly inserted into the mounting plate 4 on the left side. The suction pipe 81 is fixedly connected to the front end of the mounting pipe 64. The bottom of the mounting pipe 64 is located inside the limiting cylinder 63 and has a ventilation groove 82. Ventilation holes are opened on the surfaces of the limiting cylinder 63 and the flexible anti-slip pad 93, and the ventilation holes of the limiting cylinder 63 and the flexible anti-slip pad 93 are in corresponding positions.

[0044] By adopting the above technical solution, the end of the suction pipe 81 is connected to an external suction device. Through the suction of the external suction device, the air inside the limiting cylinder 63 can be absorbed through the ventilation groove 82 at the bottom of the mounting pipe 64. The inside of the limiting cylinder 63 generates negative pressure, which allows the dust on the weft yarn to be absorbed through the ventilation holes on the surfaces of the limiting cylinder 63 and the flexible anti-slip pad 93. This prevents dust from being present on the weft yarn. After dust is absorbed, the yarn path is unobstructed and the coefficient of friction is stable, providing a basis for maintaining the "straight and non-bent" state of the weft yarn.

[0045] The mounting pipe 64 is fixed with blocking strips on both sides of the ventilation slot 82 to ensure that most of the air is drawn in from the direction closer to the latitude line, thus preventing waste of air source.

[0046] When the weft yarn is stretched and straightened, as the sliding frame 62 moves to the left, the extrusion plate 92 also moves to the left. At this time, the extrusion plate 92 is limited by the mounting plate 4 and begins to extrude the elastic bladder 91. This allows the elastic bladder 91 to expand and limit the flexible anti-slip pad 93 on the outside of the limiting cylinder 63. In the subsequent weft yarn weaving, the weft yarn is effectively limited, ensuring that the weft yarn is straight and without bending.

[0047] A biaxial weft weaving method based on carbon fiber weaving includes the following steps: S1. Two or more sets of warp yarns are straightened and unbent in the longitudinal direction and enter the weaving area, forming a V-shaped opening above the machine body 1; S2. Introduce the two sets of weft yarns into the weaving area from the outside of the warp yarns in a straight, unbent state. S3. The weft yarn is looped while the warp yarn is not looped, thus achieving weft and warp interlocking. S4. After weaving a horizontal row of yarn, repeat steps S1-S3 to weave back and forth.

[0048] Working principle: First, two sets of warp threads are distributed at the front and rear warp plates 3. The bottom of the warp threads passes between the two warp plates 3, forming a V-shape. By manually pulling the traction shaft mounted on the rotating frame, the two traction shafts are separated, facilitating the passage of the distributed warp threads. Under the elastic force of the U-shaped spring, the two clamps hold the warp threads. At this time, the axis of the traction shaft mounted on the rotating frame is aligned with the axis of the rotating frame. Driven by the motor, the traction shaft rotates. Under the friction of the sponge sleeve on the outside of the traction shaft, the warp threads can be pulled downwards. As weaving progresses, the woven material will reach the traction shaft, thus gradually pulling the woven material. The warp threads are clamped on the left slide 54. The weft yarn is clamped by the slide block 54, which then carries the clamping part 55 to the right to transport the weft yarn. Initially, the slide block 54, which is on the right, moves the corresponding clamping part 55 to the left. When the slide block 54, which is initially on the right, moves the corresponding clamping part 55 to the left, the clamping part 55 clamps the weft yarn. Then, the output shaft of the motor 56 rotates in the opposite direction to the previous movement, which allows the slide block 54 to carry the corresponding clamping part 55 to the right to transport the weft yarn. This design allows a single movement to complete one weft yarn transport. After one weft yarn transport, the knitting yarn is transported from right to left by the conveying rod, and the knitting needles bind the knitting yarn, warp yarn, and weft yarn together.

[0049] When the clamping part 55 moves to the right, the output shaft of the electric telescopic rod 551 extends and retracts. At this time, under the limiting action of the round shaft 557, the clamping frame 553 moves away from the middle position of the body 1. At this time, the clamping part 55 does not clamp the right side of the weft thread. When the clamping part 55 is about to complete its movement, the round shaft 557 returns to the middle part of the arc groove 556. At this time, under the elastic force of the second spring 78, the clamping frame 553 resets and clamps the weft thread again in the left position. The electric telescopic rod 551 in the clamping part 55 near the middle position of the body 1 retracts when the slide 54 moves to the right, while the electric telescopic rod 551 in the clamping part 55 away from the middle position of the body 1 extends when the slide 54 moves to the right. This ensures that the two clamping parts 55 do not interfere with each other when they move.

[0050] When the output shaft of the electric telescopic rod 551 extends or retracts, under the elastic force of the second spring 78, the small plate 72 moves along with the movement of the clamping frame 553. At this time, the corrugated bladder 73 is stretched, and the medium inside the medium bladder 74 enters the corrugated bladder 73. This facilitates the clamping frame 553 to release the weft yarn and facilitates the movement of the yarn clamping part 55. When the output shaft of the electric telescopic rod 551 returns to its original position, the small plate 72 moves along with the movement of the clamping frame 553. At this time, the corrugated bladder 73 is compressed, which allows the medium bladder 74 to expand and clamp the weft yarn. This design ensures continuous traction of the weft yarn.

[0051] The end of the suction pipe 81 is connected to an external suction device. Through the suction of the external suction device, the air inside the limiting cylinder 63 can be absorbed through the air groove 82 at the bottom of the mounting pipe 64. The inside of the limiting cylinder 63 is negatively pressured, so that the dust on the weft can be absorbed through the air holes on the surface of the limiting cylinder 63 and the flexible anti-slip pad 93, preventing dust from being present on the weft. When the weft is stretched and straightened, as the sliding frame 62 moves to the left, the extrusion plate 92 moves to the left as well. At this time, the extrusion plate 92 is limited by the mounting plate 4 and begins to compress the elastic bladder 91. This allows the elastic bladder 91 to expand and limit the flexible anti-slip pad 93 on the outside of the limiting cylinder 63. During the subsequent weft weaving, the weft is effectively limited to ensure that the weft is straight and without bending.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions 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 biaxial weft knitting machine based on carbon fiber weaving, comprising a machine body (1), a pull-down assembly (2) disposed at the bottom of the machine body (1), a warp plate (3) fixedly connected to the top of the machine body (1), and mounting plates (4) fixedly connected to both sides of the interior of the machine body (1), characterized in that, Biaxial weft knitting machines also include: The weft feeding assembly (5) is located inside the machine body (1). The weft feeding assembly (5) includes a mounting frame (51) fixedly connected between two mounting plates (4). Both sides of the mounting frame (51) are rotatably connected to pulleys (52). A synchronous belt (53) is connected between the two pulleys (52). The front and rear ends of the synchronous belt (53) are fixedly connected to slides (54). A wire clamping part (55) is arranged on the top of the slide (54). A straightening assembly (6) is located on the left side of the body (1). The straightening assembly (6) includes a long rod (61) fixedly connected to the right side of the mounting plate (4) on the left side. A sliding frame (62) is slidably connected to the outside of the long rod (61). A limiting cylinder (63) is provided at both the top and bottom ends of the inner side of the sliding frame (62). An installation tube (64) is rotatably connected inside the limiting cylinder (63). The outer wall of the installation tube (64) is fixedly connected to the sliding frame (62). A first spring (65) is fixedly connected between the sliding frame (62) and the mounting plate (4) on the left side. A motion frame (66) is fixedly connected to the bottom of the sliding frame (62). An extrusion strip (10) is fixedly connected to the left side of both sliding blocks (54).

2. The biaxial weft braiding machine based on carbon fiber braiding according to claim 1, characterized in that: The clamping part (55) includes an electric telescopic rod (551) fixedly connected inside the slide (54). A fixing plate (552) is fixedly connected to the top of the electric telescopic rod (551). A clamping frame (553) is slidably connected to the side of the fixing plate (552) near the middle of the body (1). The clamping frame (553) has an opening on the side away from the fixing plate (552).

3. A biaxial weft braiding machine based on carbon fiber braiding according to claim 2, characterized in that: A motor (56) is fixedly connected to the bottom left side of the mounting frame (51). The output shaft of the motor (56) passes through the mounting frame (51) and is fixedly connected to the pulley (52) on the left side. When the output shaft of the motor (56) rotates, the pulley (52) rotates, causing the synchronous belt (53) to move.

4. A biaxial weft braiding machine based on carbon fiber braiding according to claim 3, characterized in that: The clamping part (55) also includes a limiting frame (554) fixedly connected to the top of the slide (54). A bottom block (555) is fixedly connected to the bottom of the clamping frame (553). An arc groove (556) is provided on the side of the bottom block (555). A round shaft (557) for reducing motion friction is rotatably connected to the end of the limiting frame (554) near the arc groove (556).

5. A biaxial weft braiding machine based on carbon fiber braiding according to claim 4, characterized in that: The clamping frame (553) is internally equipped with an adjustment component (7). The adjustment component (7) includes a bent frame (71) fixedly connected to the end of the fixed plate (552). A small plate (72) is fixedly connected inside the clamping frame (553). A corrugated bladder (73) is fixedly connected between the bent frame (71) and the small plate (72). A medium bladder (74) is fixedly connected to both the top and bottom ends of the opening of the clamping frame (553). A round tube (75) is fixedly inserted into the side of the corrugated bladder (73). An elastic flexible bladder (76) is fixedly connected to the round tube (75) away from the medium bladder (74). A branch tube frame (77) is fixedly inserted between the flexible bladder (76) and the medium bladder (74). A second spring (78) is fixedly connected between the fixed plate (552) and the small plate (72).

6. A biaxial weft braiding machine based on carbon fiber braiding according to claim 5, characterized in that: The inner annular array of the branch pipe rack (77) is fixedly connected with ribs (79), and the outer side of the ribs (79) and the branch pipe rack (77) are fixedly connected with an elastic membrane (710).

7. A biaxial weft braiding machine based on carbon fiber braiding according to claim 6, characterized in that: The left side of the body (1) is equipped with a limiting component (9). The limiting component (9) includes an elastic bladder (91) fixedly connected to the top and bottom of the inner side of the sliding frame (62). A compression plate (92) is arranged on the left side of the elastic bladder (91). The outer side of the compression plate (92) is slidably connected to the sliding frame (62). A flexible anti-slip pad (93) is fixedly connected to the outer side of the limiting cylinder (63).

8. A biaxial weft braiding machine based on carbon fiber braiding according to claim 7, characterized in that: The left side of the body (1) is equipped with a dust collection component (8). The dust collection component (8) includes a suction pipe (81) that is fixedly inserted into the mounting plate (4) on the left side. The suction pipe (81) is fixedly connected to the front end of the mounting pipe (64). The bottom of the mounting pipe (64) is located inside the limiting cylinder (63) and has a ventilation groove (82).

9. A biaxial weft braiding machine based on carbon fiber braiding according to claim 8, characterized in that: Ventilation holes are provided on the surfaces of both the limiting cylinder (63) and the flexible anti-slip pad (93), and the ventilation holes of the limiting cylinder (63) and the flexible anti-slip pad (93) are in corresponding positions.

10. A biaxial weft weaving method based on carbon fiber weaving, characterized in that: This method is applicable to a biaxial weft braiding machine based on carbon fiber braiding as described in any one of claims 1-9, and includes the following steps: S1. Two or more sets of warp yarns are straightened and unbent in the longitudinal direction and enter the weaving area, forming a V-shaped opening above the machine body (1); S2. Introduce the two sets of weft yarns into the weaving area from the outside of the warp yarns in a straight, unbent state. S3. The weft yarn is looped while the warp yarn is not looped, thus achieving weft and warp interlocking. S4. After weaving a horizontal row of yarn, repeat steps S1-S3 to weave back and forth.

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