Knit fabric yarn feed angle adjustment device and weaving process

Abstract

The application belongs to the field of textile processing equipment, and particularly relates to a knitted fabric yarn feeding angle adjusting device and a weaving process, wherein the knitted fabric yarn feeding angle adjusting device comprises a mounting frame, further comprises a groove, a shell, a frame, a transverse angle redundancy protection mechanism, an L-shaped plate and a vertical angle redundancy protection mechanism. The groove is arranged on the bottom of the mounting frame, rotating shafts are rotatably arranged on the inner walls of the front side and the rear side of the groove, and the same U-shaped seat is fixedly arranged on the rotating shafts; the shell is arranged below the U-shaped seat. The application has a reasonable design, through the addition of the transverse and vertical double redundancy protection adjusting mechanisms, when the driving motor fails and the automatic adjustment fails, the horizontal and vertical angle emergency adjustments can be respectively completed through the manual worm gear structure and the screw rod adjusting structure, the problem that the existing equipment stops and the production is interrupted when the motor fails is completely solved, the continuous and stable weaving operation is ensured, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of textile processing equipment technology, and in particular to a yarn feeding angle adjustment device and weaving process for knitted fabrics. Background Technology

[0002] In the knitting process, the yarn feeding angle directly determines the fabric's weaving precision, smoothness, and finished product quality, making it one of the core parameters in the knitting process.

[0003] Currently, most yarn feeding adjustment devices in knitting equipment have a simple structure, capable of only fine-tuning the angle in one direction. This makes them unsuitable for multi-angle feeding requirements of different materials, yarn thicknesses, and fabric weights and densities. Furthermore, existing adjustment devices often rely on a single motor drive, which cannot quickly adjust the angle in case of motor failure, jamming, or power outage. The lack of redundant protection structures makes it easy for the weaving process to be interrupted, resulting in fabric defects and deficiencies, significantly reducing weaving efficiency and product qualification rates. Therefore, we propose a yarn feeding angle adjustment device and weaving process for knitted fabrics to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a yarn feeding angle adjustment device and weaving process for knitted fabrics.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A yarn feeding angle adjustment device for knitted fabrics includes a mounting frame, and further includes: a groove, a housing, a frame, a lateral angle redundancy protection mechanism, an L-shaped plate, and a vertical angle redundancy protection mechanism. The groove is located at the bottom of the mounting frame, and a rotating shaft is rotatably mounted on the inner walls of the front and rear sides of the groove. A U-shaped seat is fixedly fitted onto the rotating shaft. The housing is located below the U-shaped seat, and a rotating mechanism is provided between the housing and the U-shaped seat. A stepper motor is installed inside the housing, and the output shaft of the stepper motor extends to the bottom of the housing and is fixedly mounted with a yarn guide. The frame is connected to the bottom of the U-shaped seat. The lateral angle redundancy protection mechanism is located on the frame. The L-shaped plate is connected to the top of the mounting frame, and a drive mechanism for rotating the rotating shaft is provided on the L-shaped plate. The vertical angle redundancy protection mechanism is located at the top of the mounting frame and connected to the L-shaped plate.

[0007] Preferably, a T-shaped base is fixedly installed on the top of the mounting bracket, and a T-shaped hole with an open bottom is opened on one side of the L-shaped plate, and the L-shaped plate is slidably installed on the T-shaped base through the T-shaped hole.

[0008] Preferably, the drive mechanism includes: a movable slot, a rack seat, and a rotating gear. The movable slot is formed on the mounting bracket and communicates with the groove; the rack seat is slidably mounted in the movable slot; the rotating gear is fixedly mounted on the rotating shaft, and the rack seat meshes with the rotating gear.

[0009] Preferably, the drive mechanism further includes: a drive hole, a drive seat, and a push rod motor. The drive hole is formed on the top inner wall of the moving slot; the drive seat is slidably installed in the drive hole, with its bottom end fixedly connected to the top of the rack seat and its top end extending above the mounting bracket; the push rod motor is connected to the L-shaped plate, and the output shaft of the push rod motor is fixedly connected to the drive seat.

[0010] Preferably, the rotating mechanism includes a rotating groove and a rotating rod. The rotating groove is formed on the bottom of the U-shaped seat, and an annular groove is formed on the inner wall of the rotating groove; the top end of the rotating rod is rotatably installed in the rotating groove, and its bottom end is fixedly connected to the top of the housing. An annular seat is fixedly installed at the bottom end of the rotating rod, and the annular seat is rotatably installed in the annular groove.

[0011] Preferably, the lateral angle redundancy protection mechanism includes: a worm gear, a drive shaft, and a worm. The worm gear is connected to a rotating rod; the drive shaft is connected to the inner walls of both sides of the frame, one end of which extends to the outer side of the frame and is fixedly fitted with a knob; the worm is connected to the drive shaft, and the worm meshes with the worm gear.

[0012] Preferably, the vertical angle redundancy protection mechanism includes: a vertical plate, a threaded hole, an adjusting screw, and a locking nut. The vertical plate is connected to the mounting bracket; the threaded hole is formed on one side of the vertical plate; the adjusting screw is threaded into the threaded hole, with one end rotatably mounted on an L-shaped plate and the other end fixedly mounted with a handle; the locking nut is threaded onto the adjusting screw and abuts against the vertical plate.

[0013] Preferably, a rotating groove is provided on one side of the L-shaped plate, and an annular groove II is provided on the inner wall of the rotating groove. An annular seat II is fixedly installed at one end of the adjusting screw, and the annular seat II is rotatably connected to the annular groove II.

[0014] Preferably, a controller is mounted on the mounting bracket, and both the push rod motor and the stepper motor are electrically connected to the controller.

[0015] A knitting process for adjusting the yarn feeding angle of a knitted fabric, characterized by comprising the following steps:

[0016] S1: Fix the mounting frame in the feeding station of the knitting equipment, turn on the power of the equipment, and enter the specifications of the fabric to be woven through the controller, including yarn material, yarn thickness, fabric weight, weaving density, etc. The controller matches the corresponding standard feeding angle range according to the entered parameters.

[0017] S2: By starting the stepper motor, the stepper motor can drive the yarn guide to adjust horizontally through the output shaft. By starting the push rod motor, the push rod motor can drive the drive seat to move. The drive seat can drive the rack seat to rotate. The rack seat drives the rotating shaft to rotate through the rotating gear. The rotating shaft drives the yarn guide nozzle to adjust the angle in the vertical direction through the U-shaped seat and the housing. Thus, it is possible to achieve the purpose of multi-angle adjustment of the yarn feeding angle as needed.

[0018] S3: When the push rod motor malfunctions, by turning the handle and adjusting screw, the adjusting screw can be moved while rotating under the action of the threaded hole. The adjusting screw can drive the L-shaped plate and the push rod motor to move. The push rod motor drives the drive seat to move synchronously through the output shaft. The drive seat drives the rotating shaft and U-shaped seat to rotate through the rack seat. The U-shaped seat drives the yarn guide nozzle to adjust the vertical angle through the housing.

[0019] S4: When the stepper motor malfunctions, rotating the knob will cause the drive shaft to rotate, which in turn will cause the worm gear to rotate. The worm gear will then drive the rotating rod to rotate via the worm wheel. The rotating rod will then drive the housing to rotate, which in turn will cause the stepper motor and the yarn guide to rotate synchronously, thereby achieving the purpose of adjusting the angle of the yarn guide in the horizontal direction.

[0020] The beneficial effects of this invention are:

[0021] 1. By setting up a bidirectional automatic adjustment structure, the horizontal angle of the yarn guide is automatically adjusted by a stepper motor, and the vertical angle is automatically adjusted by a push rod motor in conjunction with gear and rack transmission. The feeding angle can be accurately matched according to different fabric and yarn parameters, and the multi-angle adaptive adjustment can greatly improve the accuracy and adaptability of knitted fabric weaving, and effectively improve the flatness of the fabric and the quality of the finished product.

[0022] 2. By adding a dual redundant protection and adjustment mechanism in both the horizontal and vertical directions, in the event of a drive motor failure or automatic adjustment failure, emergency adjustments to the horizontal and vertical angles can be made through a manual worm gear structure and a screw adjustment structure, respectively. This completely solves the problem of machine shutdown and production interruption caused by motor failure in existing equipment, ensuring continuous and stable weaving operations and significantly improving production efficiency. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a yarn feeding angle adjustment device for knitted fabrics proposed in this invention.

[0024] Figure 2 This is a bottom-view three-dimensional structural diagram of a yarn feeding angle adjustment device for knitted fabrics proposed in this invention.

[0025] Figure 3This is a cross-sectional three-dimensional structural diagram of a yarn feeding angle adjustment device for knitted fabrics proposed in this invention.

[0026] Figure 4 This is a partial three-dimensional structural diagram of a yarn feeding angle adjustment device for knitted fabrics proposed in this invention.

[0027] Figure 5 This is a schematic diagram of part A of a yarn feeding angle adjustment device for knitted fabrics proposed in this invention.

[0028] Figure 6 This is a schematic diagram of part B of a yarn feeding angle adjustment device for knitted fabrics proposed in this invention.

[0029] Figure 7 This is a schematic diagram of part C of a yarn feeding angle adjustment device for knitted fabrics proposed in this invention.

[0030] In the diagram: 101, mounting bracket; 102, groove; 103, rotating shaft; 104, U-shaped seat; 105, housing; 106, stepper motor; 107, yarn guide; 201, moving groove; 202, rack seat; 203, rotating gear; 204, drive hole; 205, drive base; 206, L-shaped plate; 207, push rod motor; 301, rotating groove; 302, rotating rod; 303, frame; 304, worm gear; 305, drive shaft; 306, worm wheel; 307, knob; 401, vertical plate; 402, threaded hole; 403, adjusting screw; 404, handle; 405, locking nut; 501, T-shaped hole; 502, T-shaped seat; 6, controller. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Reference Figures 1-7A yarn feeding angle adjustment device for knitted fabrics includes a mounting frame 101, which is fixedly mounted on the feeding station of a knitting equipment. It also includes a groove 102, a housing 105, a frame 303, a lateral angle redundancy protection mechanism, an L-shaped plate 206, and a vertical angle redundancy protection mechanism. The groove 102 is located at the bottom of the mounting frame 101. A rotating shaft 103 is rotatably mounted on the inner walls of the front and rear sides of the groove 102. A U-shaped seat 104 is fixedly fitted onto the rotating shaft 103. The housing 105 is located below the U-shaped seat 104, and a rotating mechanism is provided between the housing 105 and the U-shaped seat 104. A stepper motor 106 is fixedly installed inside the housing 105. The output shaft of the stepper motor 106 extends to the bottom of the housing 105 and a yarn guide 107 is fixedly installed thereon. The stepper motor 106 can drive the yarn guide 107 to adjust its angle in the horizontal direction. The frame 303 is fixedly connected to the bottom of the U-shaped seat 104. A horizontal angle redundancy protection mechanism is set on the frame 303. An L-shaped plate 206 is connected to the top of the mounting frame 101. A drive mechanism for driving the rotating shaft 103 to rotate is set on the L-shaped plate 206. A vertical angle redundancy protection mechanism is set on the top of the mounting frame 101 and connected to the L-shaped plate 206.

[0034] Based on the above, and referring to Figure 7 The mounting bracket 101 has a T-shaped seat 502 fixedly installed on the top. The L-shaped plate 206 has a T-shaped hole 501 with an open bottom on one side. The L-shaped plate 206 is slidably fitted onto the T-shaped seat 502 through the T-shaped hole 501, realizing the sliding installation of the L-shaped plate 206 and ensuring the stability of the vertical adjustment process.

[0035] Based on the above, and referring to Figure 2 , 3 5. The drive mechanism includes a movable slot 201, a rack seat 202, a rotating gear 203, a drive hole 204, a drive base 205, and a push rod motor 207. The movable slot 201 is formed on the mounting bracket 101 and communicates with the groove 102. The rack seat 202 is slidably installed inside the movable slot 201. The rotating gear 203 is fixedly mounted on the rotating shaft 103, and the rack seat 202 and the rotating gear 203 mesh with each other. The drive hole 204 is formed on the top inner wall of the movable slot 201. The drive base 205 is slidably installed in the drive hole 204. The bottom end of the drive base 205 is fixedly connected to the top of the rack seat 202, and the top end extends above the mounting bracket 101. The push rod motor 207 is fixedly installed on the L-shaped plate 206. The output shaft of the push rod motor 207 is fixedly connected to the drive base 205 to provide power for automatic vertical angle adjustment.

[0036] Based on the above, and referring to Figure 5The rotating mechanism includes a rotating groove 301, an annular groove 1, a rotating rod 302, and an annular seat 1. The rotating groove 301 is formed at the bottom of the U-shaped seat 104, and the annular groove 1 is formed on the inner wall of the rotating groove 301. The top end of the rotating rod 302 is rotatably installed inside the rotating groove 301, and the bottom end of the rotating rod 302 is fixedly connected to the top of the housing 105. The annular seat 1 is fixedly installed at the bottom end of the rotating rod 302, and the annular seat 1 is rotatably fitted inside the annular groove 1, so as to realize the relative rotation of the housing 105 and the U-shaped seat 104 and complete the horizontal angle adjustment action.

[0037] Based on the above, and referring to Figure 6 The lateral angle redundancy protection mechanism includes a worm gear 306, a drive shaft 305, a worm 304, and a knob 307. The worm gear 306 is fixedly sleeved on the rotating rod 302. The drive shaft 305 is rotatably mounted on the inner walls of both sides of the frame 303. One end of the drive shaft 305 extends to the outside of the frame 303 and is fixedly mounted on the knob 307. The worm 304 is fixedly sleeved on the drive shaft 305, and the worm 304 meshes with the worm gear 306 to form a manual worm gear 306-worm 304 transmission structure, realizing emergency adjustment of the horizontal angle.

[0038] Based on the above, and referring to Figure 7 The vertical angle redundancy protection mechanism includes a vertical plate 401, a threaded hole 402, an adjusting screw 403, a locking nut 405, and a handle 404. The vertical plate 401 is fixedly connected to the top of the mounting bracket 101. A threaded hole 402 is provided on one side of the vertical plate 401. The adjusting screw 403 is threaded onto the vertical plate 401 through the threaded hole 402. One end of the adjusting screw 403 is rotatably mounted on the L-shaped plate 206, and the other end is fixedly mounted on the handle 404. The locking nut 405 is threaded onto the adjusting screw 403, and the locking nut 405 abuts against the side wall of the vertical plate 401 to realize manual adjustment and locking of the vertical angle. A rotating groove is provided on one side of the L-shaped plate 206, and an annular groove II is provided on the inner wall of the rotating groove. An annular seat II is fixedly mounted on the end of the adjusting screw 403. The annular seat II is rotatably fitted inside the annular groove II to ensure that the adjusting screw 403 can stably drive the L-shaped plate 206 to move without jamming or offset when rotating.

[0039] Based on the above, and referring to Figure 1 The mounting bracket 101 is fixedly mounted with a controller 6. The push rod motor 207 and the stepper motor 106 are electrically connected to the controller 6. The controller 6 realizes automated parameter control and precise angle adjustment. It should be noted that the controller 6 is a PLC controller 6, and the controller 6, the stepper motor 106 and the push rod motor 207 can all be purchased from the market or customized. Their circuit connection method and power supply method are common knowledge to those skilled in the art, so they are not described in detail.

[0040] The present invention also provides a weaving process for adjusting the yarn feeding angle of knitted fabrics, comprising the following steps:

[0041] S1. Equipment installation and parameter input: Fix the mounting frame 101 to the feeding station of the knitting equipment, connect the overall power supply of the equipment, and input the specifications of the fabric to be woven through the controller 6. The parameters include yarn material, yarn thickness, fabric weight, and weaving density. The built-in database of the controller 6 automatically matches the corresponding standard yarn feeding angle range according to the input parameters and presets the adjustment parameters.

[0042] S2. Automated bidirectional angle adjustment weaving: During normal operation, the stepper motor 106 is started by the controller 6. The output shaft of the stepper motor 106 drives the yarn guide nozzle 107 to rotate, completing the automated adjustment of the horizontal angle of the yarn feeding. Simultaneously, the push rod motor 207 is started. The output shaft of the push rod motor 207 extends and retracts, driving the drive seat 205 to move vertically along the drive hole 204. The drive seat 205 drives the rack seat 202 to slide horizontally in the moving groove 201. The rack seat 202 drives the rotating gear 203 to rotate through meshing transmission. The rotating gear 203 drives the rotating shaft 103 to rotate, which in turn drives the yarn guide nozzle 107 to swing as a whole through the U-shaped seat 104 and the housing 105, realizing the automated adjustment of the vertical angle, matching the preset angle range, and completing the normal weaving operation.

[0043] S3. Emergency Redundant Adjustment of Vertical Angle: When the push rod motor 207 malfunctions, jams, or loses power and cannot complete the automatic vertical angle adjustment, tighten or loosen the locking nut 405, and manually rotate the handle 404 to drive the adjusting screw 403 to rotate. Under the thread transmission of the threaded hole 402, the adjusting screw 403 rotates and moves axially, driving the L-shaped plate 206 to slide horizontally along the T-shaped seat 502. The L-shaped plate 206 synchronously drives the push rod motor 207, the drive seat 205, and the rack seat 202 to move. Through the gear and rack transmission, the rotating shaft 103 and the U-shaped seat 104 swing, and finally drive the yarn guide nozzle 107 to complete the manual adjustment of the vertical angle. After the adjustment is completed, tighten the locking nut 405 to complete the positioning and locking, ensuring that the vertical angle adjustment function is normal.

[0044] S4. Emergency Redundant Adjustment of Horizontal Angle: When the stepper motor 106 malfunctions or jams and cannot complete the automatic horizontal angle adjustment, the knob 307 is manually rotated. The knob 307 drives the drive shaft 305 and the worm gear 304 to rotate synchronously. The worm gear 304 meshes with and drives the worm wheel 306 to rotate. The worm wheel 306 drives the rotating rod 302 to rotate in the rotating groove 301. The rotating rod 302 drives the housing 105, the stepper motor 106 and the yarn guide 107 to rotate as a whole, realizing the manual adjustment of the horizontal angle of the yarn guide 107, making up for the failure of automatic adjustment and ensuring the continuous operation of weaving.

[0045] The foregoing has provided a detailed description of the yarn feeding angle adjustment device and weaving process for knitted fabrics provided by the present invention. Specific embodiments have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A yarn feeding angle adjustment device for knitted fabrics, comprising a mounting frame (101), characterized in that, Also includes: The groove (102) is opened on the bottom of the mounting bracket (101). The rotating shaft (103) is rotatably installed on the inner wall of the front and rear sides of the groove (102). The same U-shaped seat (104) is fixedly fitted on the rotating shaft (103). The housing (105) is located below the U-shaped seat (104), and a rotating mechanism is provided between the housing (105) and the U-shaped seat (104). A stepper motor (106) is installed inside the housing (105), and the output shaft of the stepper motor (106) extends to the bottom of the housing (105) and is fixedly installed with a yarn guide (107). The frame (303) is connected to the bottom of the U-shaped base (104); A lateral angle redundancy protection mechanism is installed on the frame (303); L-shaped plate (206) is connected to the top of mounting bracket (101), and the L-shaped plate (206) is provided with a drive mechanism for rotating shaft (103); A vertical angle redundancy protection mechanism is set on the top of the mounting bracket (101) and connected to the L-shaped plate (206).

2. The yarn feeding angle adjustment device for knitted fabrics according to claim 1, characterized in that, The mounting bracket (101) is fixedly mounted with a T-shaped seat (502) on the top. The L-shaped plate (206) has a T-shaped hole (501) with an open bottom on one side, and the L-shaped plate (206) is slidably mounted on the T-shaped seat (502) through the T-shaped hole (501).

3. The yarn feeding angle adjustment device for knitted fabrics according to claim 1, characterized in that, The drive mechanism includes: The movable slot (201) is formed on the mounting bracket (101) and communicates with the groove (102); The rack seat (202) is slidably installed in the movable groove (201); The rotating gear (203) is fixedly mounted on the rotating shaft (103), and the rack seat (202) meshes with the rotating gear (203).

4. The yarn feeding angle adjustment device for knitted fabrics according to claim 1, characterized in that, The drive mechanism also includes: A drive hole (204) is formed on the top inner wall of the moving groove (201); The drive seat (205) is slidably installed in the drive hole (204), its bottom end is fixedly connected to the top of the rack seat (202), and its top end extends to the top of the mounting bracket (101); A push rod motor (207) is connected to an L-shaped plate (206), and the output shaft of the push rod motor (207) is fixedly connected to a drive seat (205).

5. The yarn feeding angle adjustment device for knitted fabrics according to claim 1, characterized in that, The rotating mechanism includes: A rotating groove (301) is formed on the bottom of the U-shaped seat (104), and an annular groove is formed on the inner wall of the rotating groove (301); The top end of the rotating rod (302) is rotatably installed in the rotating groove (301), and its bottom end is fixedly connected to the top of the housing (105). The bottom end of the rotating rod (302) is fixedly installed with an annular seat, and the annular seat is rotatably installed in the annular groove.

6. The yarn feeding angle adjustment device for knitted fabrics according to claim 1, characterized in that, The lateral angle redundancy protection mechanism includes: A worm gear (306) is connected to a rotating rod (302); A drive shaft (305) is connected to the inner walls of both sides of the frame (303). One end of the drive shaft (305) extends to the outside of the frame (303) and is fixedly mounted with a knob (307). The worm (304) is connected to the drive shaft (305) and meshes with the worm wheel (306).

7. The yarn feeding angle adjustment device for knitted fabrics according to claim 1, characterized in that, The vertical angle redundancy protection mechanism includes: The vertical plate (401) is connected to the mounting bracket (101); A threaded hole (402) is provided on one side of the vertical plate (401); The adjusting screw (403) is threaded into the threaded hole (402), with one end rotatably mounted on the L-shaped plate (206) and the other end fixedly mounted with a handle (404). The locking nut (405) is threaded onto the adjusting screw (403) and abuts against the vertical plate (401).

8. The yarn feeding angle adjustment device for knitted fabrics according to claim 7, characterized in that, A rotating groove is provided on one side of the L-shaped plate (206), and an annular groove II is provided on the inner wall of the rotating groove. An annular seat II is fixedly installed at one end of the adjusting screw (403), and the annular seat II is rotatably connected to the annular groove II.

9. The yarn feeding angle adjustment device for knitted fabrics according to claim 1, characterized in that, The mounting bracket (101) is equipped with a controller (6), and both the push rod motor (207) and the stepper motor (106) are electrically connected to the controller (6).

10. A weaving process for adjusting the yarn feeding angle of knitted fabrics, characterized in that, Includes the following steps: S1: Fix the mounting bracket (101) in the feeding station of the knitting equipment, turn on the power of the equipment, and input the specifications of the fabric to be woven through the controller (6), including yarn material, yarn thickness, fabric weight, weaving density, etc. The controller (6) matches the corresponding standard feeding angle range according to the input parameters. S2: By starting the stepper motor (106), the stepper motor (106) can drive the yarn guide to adjust horizontally through the output shaft. By starting the push rod motor (207), the push rod motor (207) can drive the drive seat (205) to move. The drive seat (205) can drive the rack seat (202) to rotate. The rack seat (202) drives the rotating shaft (103) to rotate through the rotating gear (203). The rotating shaft (103) drives the yarn guide nozzle (107) to adjust the angle in the vertical direction through the U-shaped seat (104) and the housing (105), thereby achieving the purpose of adjusting the yarn feeding angle at multiple angles as needed. S3: When the push rod motor (207) malfunctions, by rotating the handle (404) and adjusting screw (403), the adjusting screw (403) can be rotated and moved at the same time under the action of the threaded hole (402). The adjusting screw (403) can drive the L-shaped plate (206) and the push rod motor (207) to move. The push rod motor (207) drives the drive seat (205) to move synchronously through the output shaft. The drive seat (205) drives the rotating shaft (103) and U-shaped seat (104) to rotate through the rack seat (202). The U-shaped seat (104) drives the yarn guide (107) to adjust the vertical angle through the housing (105). S4: When the stepper motor (106) malfunctions, the knob (307) can be turned. The knob (307) can drive the drive shaft (305) to rotate. The drive shaft (305) can drive the worm (304) to rotate. The worm (304) drives the rotating rod (302) to rotate through the worm wheel (306). The rotating rod (302) can drive the housing (105) to rotate. The housing (105) drives the stepper motor (106) and the yarn guide (107) to rotate synchronously, thereby achieving the purpose of adjusting the angle of the yarn guide (107) in the horizontal direction.

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