Single-jacquard circular knitting machine

Abstract

The application discloses a single-face jacquard knitting circular knitting machine and relates to the technical field of the circular knitting machine.The single-face jacquard knitting circular knitting machine comprises a fixing frame capable of being installed on the circular knitting machine, the fixing frame is provided with a side plate and two upper and lower horizontal plates, and the single-face jacquard knitting circular knitting machine further comprises two guide pulleys rotatably installed on the two upper and lower horizontal plates respectively, the guide pulleys are used for guiding yarn on the circular knitting machine, a mounting frame is installed on the side plate of the fixing frame, a tensioning wheel for adjusting the tension of the yarn is installed on the mounting frame, an adjusting assembly is used for driving the tensioning wheel to rotate and driving the tensioning wheel to tighten or loosen the yarn, and the linear velocity of the tensioning wheel is the same as the conveying speed of the yarn in a normal state.In the process of adjusting the tension of the yarn through the tensioning wheel, the rotating speed of the tensioning wheel is also adjusted correspondingly, so that the over-tight or over-loose state before and after the tensioning wheel can be eliminated as soon as possible, and the yarn adjustment before and after the tensioning wheel is also more uniform.

Description

Technical Field

[0001] This invention relates to the field of circular knitting machines, specifically a single-sided jacquard circular knitting machine. Background Technology

[0002] Circular knitting machines, also known as circular knitting weft knitting machines, are broadly classified into two categories: single-sided and double-sided. Due to their numerous loop-forming systems (referred to as yarn feed paths or loop formation paths in enterprises, or simply paths), high speed, high output, rapid pattern changes, good fabric quality, fewer processes, and strong product adaptability, circular knitting machines have experienced rapid development.

[0003] Currently, existing circular knitting machines have some problems during operation. For example, the yarn may not have enough tension to maintain its tightness when pulled, causing it to become loose and affecting its quality and stability, as well as the working effect of the loop-forming system. Alternatively, the yarn may be too tight when pulled, causing it to break, which also affects the working effect of the loop-forming system.

[0004] Therefore, Chinese Patent Publication No. CN216378610U proposes an automatic yarn tension adjustment guide for a circular knitting machine. An adjustment device is set on the circular knitting machine, and the adjustment wheel is pushed forward by controlling a micro hydraulic cylinder, thereby achieving the effect of automatically adjusting the yarn tension.

[0005] However, investigations revealed that when the yarn is too loose or too tight, the adjusting wheel acts as a dividing point. The degree of looseness or tightness of the yarn before the adjusting wheel is less than that after the adjusting wheel. If the adjusting wheel is moved directly to adjust the tension, it cannot achieve a uniform adjustment effect on the yarn before and after the adjusting wheel. Summary of the Invention

[0006] The purpose of this invention is to provide a single-sided jacquard circular knitting machine to solve at least one technical problem existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a single-sided jacquard circular knitting machine, comprising a mounting frame for mounting on the circular knitting machine, the mounting frame having a side plate and upper and lower horizontal plates, and further comprising: Two guide pulleys are respectively rotatably mounted on the upper and lower horizontal plates, and the guide pulleys are used to guide the yarn on the circular knitting machine; A mounting bracket is installed on the side plate of the fixed frame, and a tensioning wheel for adjusting the tension of the yarn is installed on the mounting bracket; An adjustment component is used to drive the tension wheel to rotate and to tighten or loosen the yarn. Under normal conditions, the linear speed of the tension wheel is the same as the yarn conveying speed. During tightening, the linear speed of the tension wheel slows down, and during loosening, the linear speed of the tension wheel speeds up.

[0008] Preferably, the adjustment assembly includes an electric slider mounted on the top of the mounting bracket and capable of horizontal sliding adjustment; the tension wheel is rotatably mounted on the top of the electric slider via a bearing seat; and the tension wheel is also coaxially connected to a secondary gear. The regulating assembly also includes a drive assembly for driving the secondary gear to rotate and adjusting its speed.

[0009] Preferably, the drive assembly includes a main gear rotatably mounted on the side wall of the mounting bracket, and a first motor for driving the main gear to rotate is also mounted on the mounting bracket; The drive assembly also includes an intermediate gear that meshes with both the secondary gear and the primary gear. The axis of the intermediate gear is rotatably connected to two connecting rods, and the ends of the two connecting rods are rotatably connected to the central axes of the secondary gear and the primary gear, respectively.

[0010] Preferably, a pressure sensor is installed on the inner contour of the tensioning wheel. When the pressure sensor detects that the pressure of the yarn on the tensioning wheel is higher than a preset value, the pressure sensor controls the electric slider to move away from the yarn. Conversely, when the pressure sensor detects that the pressure of the yarn on the tensioning wheel is lower than the preset value, the pressure sensor controls the electric slider to move closer to the yarn.

[0011] Preferably, it also includes a cleaning component, which includes a lint removal box installed on the top plate of the fixed frame. The lint removal box has an internal cavity and a through groove on its side wall for yarn to pass through. The side plate of the fixed frame also has a corresponding through hole for yarn to pass through. A lifting plate is vertically slidably installed on the inner wall of the lint removal box, and the top of the lifting plate is connected to an air suction pipe. The cleaning assembly also includes a lifting assembly that controls the lifting plate to move upward and creates negative pressure in the space below, and during the lifting process, the suction pipe approaches the yarn but does not touch the yarn.

[0012] Preferably, the lifting assembly includes a sliding baffle that is horizontally slidably installed at the bottom of the lifting plate, a first connecting rod that is rotatably installed between the sliding baffle and the inner bottom of the cleaning box, a shaft that is fixed at the rotatable connection between the first connecting rod and the cleaning box, a torsion spring that is sleeved on the shaft that is installed between the first connecting rod and the inner side wall of the cleaning box, and a second motor that is installed on the outer wall of the cleaning box for driving the shaft to rotate and driving the first connecting rod to swing upward; The lifting assembly also includes a locking assembly, which locks the position of the first connecting rod after it swings up, and releases the locking effect on the first connecting rod when the locking time exceeds a preset value. The outer wall of the lint removal box is also provided with an exhaust hole that can exhaust air in one direction.

[0013] Preferably, the locking component includes a chute formed at the bottom of the cleaning box, a limiting block is slidably installed on the inner wall of the chute, and a second connecting rod is rotatably connected between the limiting block and the first connecting rod. A groove is also formed at the bottom of the chute, and a protrusion is vertically slidably installed in the groove. An airbag is installed between the protrusion and the groove, and the top cross-section of the protrusion is triangular.

[0014] Preferably, the top end of the suction pipe has a curved groove for the yarn to enter, and the curved groove does not come into contact with the yarn.

[0015] Preferably, a sliding plate is slidably mounted on the top of the mounting bracket. A vertical groove is provided on the outer wall of the sliding plate. A slider is vertically slidably mounted on the inner wall of the vertical groove. The intermediate gear is rotatably mounted on the outer wall of the slider. Distance sensors for monitoring the position of the slider are installed at the inner top and inner bottom of the vertical groove. When the distance sensor detects a change in the position of the slider, the distance sensor controls the second motor to start.

[0016] Preferably, the bottom of the lint removal box is also provided with an adhesive layer for adhering lint.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: In the process of adjusting the tension of the yarn by means of the tensioning wheel, the rotation speed of the tensioning wheel is also adjusted accordingly, so that the over-tight or over-loose state before and after the tensioning wheel can be eliminated as soon as possible, and the yarn adjustment before and after the tensioning wheel is more uniform. Attached Figure Description

[0018] Figure 1 This is a front view of the mounting bracket of the present invention; Figure 2 For the present invention Figure 1 The right-side stereoscopic view; Figure 3 For the present invention Figure 1 Cross-sectional perspective view and enlarged details; Figure 4 For the present invention Figure 1 Left-side stereoscopic view; Figure 5 This is a cross-sectional view of the lint removal box of the present invention; Figure 6 This is a perspective view of the back of the mounting bracket of the present invention; Figure 7 This is an enlarged cross-sectional view of the tensioning wheel of the present invention; Figure 8 This is an enlarged view of the mounting bracket and its structure according to the present invention.

[0019] In the diagram: 1. Fixed frame; 2. Guide pulley; 3. Tensioning wheel; 4. Mounting frame; 5. Electric slider; 6. Secondary gear; 7. Main gear; 8. First motor; 9. Intermediate gear; 10. Connecting rod; 11. Slide plate; 12. Vertical groove; 13. Slider; 14. Yarn; 15. Fluff removal box; 16. Through groove; 17. Lifting plate; 18. First connecting rod; 19. Suction pipe; 20. Second motor; 21. Shaft; 22. Slide groove; 23. Limiting block; 24. Second connecting rod; 25. Sliding baffle; 26. Adhesive layer; 27. Airbag; 28. Protrusion; 29. ​​Pressure sensor; 30. Distance sensor. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 8 The present invention provides a technical solution: a single-sided jacquard circular knitting machine, including a mounting frame 1 for mounting on the circular knitting machine, the mounting frame 1 having a side plate and upper and lower horizontal plates, and further including: Two guide pulleys 2 are respectively rotatably mounted on the upper and lower horizontal plates, and the guide pulleys 2 are used to guide the yarn 14 on the circular knitting machine; The mounting bracket 4 is installed on the side plate of the fixed frame 1, and the mounting bracket 4 is equipped with a tensioning wheel 3 for adjusting the tension of the yarn 14; The adjustment component is used to drive the tension wheel 3 to rotate and to tighten or loosen the yarn 14. Under normal conditions, the linear speed of the tension wheel 3 is the same as the conveying speed of the yarn 14. During the tightening process, the linear speed of the tension wheel 3 slows down, and during the loosening process, the linear speed of the tension wheel 3 speeds up.

[0022] According to research data, during the use of circular knitting machines, due to factors such as yarn quality, excessive friction between the yarn and machine parts, and problems with the yarn feeding mechanism, the yarn may become loose and float, or become too tight and break. Currently, in order to solve this problem, a tensioning structure is generally added to adjust the tension of the yarn. Compared with the existing tensioning mechanism, this implementation is divided into three states. Firstly, when the yarn 14 is under normal tension, the conveying speed of the yarn 14 is the same as the linear speed of the tensioning wheel 3, thereby maintaining the normal conveying of the yarn 14. Secondly, when yarn 14 is in a floating state, i.e. too loose, and becomes loose after tensioning wheel 3, the adjusting component drives tensioning wheel 3 to move and tighten yarn 14. At the same time, the linear speed of tensioning wheel 3 slows down, creating relative friction between yarn 14 and tensioning wheel 3. This friction can pull the yarn after tensioning wheel 3, allowing the floating yarn after tensioning wheel 3 to tighten quickly, while slowing down the conveying speed of yarn 14 before tensioning wheel 3. This allows for simultaneous adjustment of yarn 14 before and after tensioning wheel 3, making the adjustment of yarn 14 faster and more uniform during tension adjustment. This prevents yarn 14 before tensioning wheel 3 from becoming too tight before the floating yarn after tensioning wheel 3 is properly adjusted. Furthermore, after the tensioning wheel 3 is adjusted, the linear speed of the tensioning wheel 3 is synchronized with the conveying speed of the yarn 14 again, so that the adjusted yarn 14 can be conveyed normally.

[0023] Thirdly, in the opposite way to the second, when the yarn 14 is too tight, the adjusting component drives the tension wheel 3 to move to reduce the tension on the yarn 14 and loosen it. At the same time, the linear speed of the tension wheel 3 increases, which is equivalent to speeding up the conveying speed of the yarn 14, thereby eliminating the tension behind the tension wheel 3 as soon as possible. Furthermore, after the tensioning wheel 3 is adjusted, the linear speed of the tensioning wheel 3 is synchronized with the conveying speed of the yarn 14 again; In summary, during the tensioning adjustment of yarn 14 via tensioning wheel 3, the rotation speed of tensioning wheel 3 is also adjusted accordingly to eliminate the over-tight or over-loose state before and after tensioning wheel 3 as soon as possible, and to make the adjustment of yarn 14 before and after tensioning wheel 3 more uniform.

[0024] In one preferred embodiment, the adjustment assembly includes an electric slider 5 mounted on the top of the mounting bracket 4 and capable of horizontal sliding adjustment, a tension wheel 3 rotatably mounted on the top of the electric slider 5 via a bearing seat, and a secondary gear 6 coaxially connected to the tension wheel 3. The regulating assembly also includes a drive assembly for driving the rotation of the secondary gear 6 and regulating its speed.

[0025] The adjustment components can be seen here. Figure 1-2 In normal use, the drive assembly drives the secondary gear 6 to rotate, and the initial position of the electric slider 5 can be set. When tension adjustment is required, the electric slider 5 slides on the top of the mounting frame 4 to move closer to or away from the yarn 14, thereby adjusting the tension wheel 3. At the same time, the drive assembly also adjusts the rotation speed of the secondary gear 6 (i.e., the tension wheel 3) according to the adjustment of different states.

[0026] In one preferred embodiment, the drive assembly includes a main gear 7 rotatably mounted on the side wall of the mounting frame 4, and a first motor 8 for driving the main gear 7 to rotate is also mounted on the mounting frame 4. The drive assembly also includes an intermediate gear 9 that meshes with both the secondary gear 6 and the main gear 7. The shaft of the intermediate gear 9 is rotatably connected to two connecting rods 10, and the ends of the two connecting rods 10 are rotatably connected to the central shafts of the secondary gear 6 and the main gear 7, respectively.

[0027] See the driver components for details. Figure 1-2 The main gear 7 is driven to rotate by the first motor 8, and the secondary gear 6 is driven to rotate by the intermediate gear 9, which in turn drives the tension wheel 3 to rotate. Therefore, under the premise that the main gear 7 rotates at a constant speed, the speed of the intermediate gear 9 will affect the speed of the secondary gear 6. The first motor 8 has a reduction structure to achieve precise control of the rotation of the main gear 7 and improve the accuracy of rotation. See Figure 8 The rotation directions of the main gear 7, intermediate gear 9, and auxiliary gear 6 are shown by the arrows in the figure. When the yarn 14 is too loose, the electric slider 5 drives the auxiliary gear 6 and the tensioning wheel 3 to move towards the yarn 14 to tighten it. Under the connection of the two connecting rods 10, the intermediate gear 9 will also revolve counterclockwise around the main gear 7 during its rotation. Since the rotation direction of the main gear 7 is counterclockwise, the rotation speed of the intermediate gear 9 will decrease during its revolve, thereby reducing the rotation speed of the auxiliary gear 6, and further reducing the rotation speed of the tensioning wheel 3, thus achieving the adjustment purpose in the above two states. Conversely, when the yarn 14 becomes too tight, the electric slider 5 drives the secondary gear 6 and the tensioning wheel 3 to move away from the yarn 14, thereby reducing the tension on the yarn 14. At this time, the intermediate gear 9 will revolve clockwise around the main gear 7, which corresponds to an increase in the rotational speed of the intermediate gear 9, as well as an increase in the rotational speed of the secondary gear 6 and the tensioning wheel 3, thus achieving the adjustment purpose of the three states mentioned above.

[0028] In one preferred embodiment, an implementation that can automatically adjust the yarn 14 is provided, see [link to previous document]. Figure 7 ; A pressure sensor 29 is installed on the inner contour of the tensioning wheel 3. When the pressure sensor 29 detects that the pressure of the yarn 14 on the tensioning wheel 3 is higher than the preset value, the pressure sensor 29 controls the electric slider 5 to move away from the yarn 14. Conversely, when the pressure sensor 29 detects that the pressure of the yarn 14 on the tensioning wheel 3 is lower than the preset value, the pressure sensor 29 controls the electric slider 5 to move closer to the yarn 14.

[0029] During the rotation of the tension wheel 3, the yarn 14 will apply a certain pressure range to the tension wheel 3 within the normal tension range. When the pressure sensor 29 detects that the pressure value is higher or lower than the preset range, the pressure sensor 29 will control the electric slider 5 to slide and adjust in order to adjust the tension of the yarn 14.

[0030] In one preferred embodiment, a cleaning component is also included, which includes a lint removal box 15 installed on the top plate of the fixing frame 1. The lint removal box 15 has an internal cavity and a through groove 16 for the yarn 14 to pass through on its side wall. The side plate of the fixing frame 1 also has a corresponding through hole for the yarn 14 to pass through. A lifting plate 17 is vertically slidably installed on the inner wall of the lint removal box 15, and the top of the lifting plate 17 is connected to an air suction pipe 19. The cleaning assembly also includes a lifting assembly that controls the lifting plate 17 to move upward and creates negative pressure in the space below. During the lifting process of the lifting plate 17, the suction pipe 19 approaches the yarn 14 but does not touch the yarn 14.

[0031] When yarn 14 is too loose, its structure becomes loose, resulting in reduced cohesion between fibers. Fibers are more likely to detach from the yarn and form lint. Similarly, when yarn 14 is too tight, its structure becomes dense, increasing friction between fibers. Fibers are more likely to wear out or break, forming lint. Therefore, lint may be generated when yarn 14 is too loose or too tight. Thus, a cleaning component is installed to clean yarn 14. See Figure 5 Under normal conditions, the yarn 14 passes through the slot 16 but does not come into contact with other object surfaces. When the yarn 14 is too loose or too tight, the lifting assembly is activated and the lifting plate 17 is moved upward, creating a negative pressure in the space below. The suction pipe 19 approaches the yarn 14 but does not touch it. The negative pressure draws in outside air through the suction pipe 19, while also adsorbing and removing lint from the surface of the yarn 14. The suction pipe 19 can be set to a small diameter, which can ensure the suction of lint and also allow the suction process to last for a certain period of time. In this way, the lint generated on the surface of the yarn 14 can be removed by suction, which can not only avoid contact with the yarn 14 and prevent new wear, but also automatically stop the suction process after the negative pressure is gradually released. This means that tension adjustment and yarn 14 cleaning are carried out simultaneously. After tension adjustment is completed and the lint on the surface of yarn 14 is cleaned, the cleaning component gradually stops automatically, avoiding noise during cleaning and also avoiding other impacts on the normal conveying of yarn 14.

[0032] It is worth mentioning that the main purpose of the cleaning component is to clean the section of yarn 14 that is too loose or too tight. Therefore, its installation position is not limited to the fixing frame 1, but can also be installed at other locations where the yarn 14 passes.

[0033] In one preferred embodiment, a method is provided in which the cleaning component automatically stops, as detailed in [reference needed]. Figure 5 ; The lifting assembly includes a sliding baffle 25 that is horizontally slidably installed at the bottom of the lifting plate 17. A first connecting rod 18 is rotatably installed between the sliding baffle 25 and the inner bottom of the cleaning box 15. A shaft 21 is fixed at the rotatable connection between the first connecting rod 18 and the cleaning box 15. A torsion spring sleeved on the shaft 21 is installed between the first connecting rod 18 and the inner side wall of the cleaning box 15. A second motor 20 for driving the shaft 21 to rotate and driving the first connecting rod 18 to swing upward is also installed on the outer wall of the cleaning box 15. The lifting assembly also includes a locking assembly, which locks the position of the first link 18 after it swings up, and releases the locking effect on the first link 18 when the locking time exceeds a preset value. The outer wall of the lint removal box 15 is also provided with an exhaust port that can exhaust air in one direction.

[0034] While the tension adjustment is being performed, the second motor 20 is also started and drives the shaft 21 to rotate, causing the first connecting rod 18 to swing upward. The sliding baffle 25 slides to open the suction pipe 19 and also drives the lifting plate 17 to move upward, creating negative pressure in the western space, thereby completing the above-mentioned suction cleaning process. Similarly, the second motor 20 also has its own deceleration structure. When the first link 18 swings to the predetermined position, the locking component locks the position of the first link 18, thereby maintaining the position of the lifting plate 17 until the locking time exceeds the preset value. Then, the locking effect on the first link 18 is released. Under the torsional force of the torsion spring, the first link 18 returns to its original swing position. At the same time, the sliding baffle 25 moves the lifting plate 17 down and closes the suction pipe 19 again. The air in the space is discharged from the exhaust hole to prevent the lint from being discharged from the suction pipe 19 and re-attaching to the yarn 14. This completes the timed shutdown of the cleaning component and the reset of the structure.

[0035] In one preferred embodiment, the locking component includes a groove 22 formed at the bottom of the cleaning box 15. A limiting block 23 is slidably installed on the inner wall of the groove 22, and a second connecting rod 24 is rotatably connected between the limiting block 23 and the first connecting rod 18. A groove is also formed at the bottom of the groove 22, and a protrusion 28 is vertically slidably installed in the groove. An airbag 27 is installed between the protrusion 28 and the groove, and the top cross section of the protrusion 28 is triangular.

[0036] As can be seen from the above, when the first link 18 swings upward, it will create a negative pressure in the space below the lifting plate 17. At the same time, the first link 18 will also drive the limiting block 23 to slide through the second link 24 and make it pass over the protrusion 28. As the lifting plate 17 moves upward, the air pressure difference between the airbag 27 and the outside will gradually increase, so that the airbag 27 will automatically inflate and press against the protrusion 28, so that it will limit the limiting block 23, thereby achieving the purpose of limiting and locking the first link 18. Then, as air is drawn in through the inhalation tube 19, the pressure difference between the inside and outside of the airbag 27 gradually decreases. When the limiting block 23 can break through the protrusion 28, the lock is released and the reset process is completed automatically. It is worth noting that when the limiting block 23 can break through the protrusion 28, the area below the lifting plate 17 is still under negative pressure. This reduces the amount of air discharged from the suction pipe 19 during the downward movement of the lifting plate 17, giving the sliding baffle 25 enough time and distance to seal the suction pipe 19 and prevent lint from re-attaching to the yarn 14.

[0037] In one preferred embodiment, the top end of the suction pipe 19 is provided with a curved groove for the yarn 14 to enter, and the curved groove does not come into contact with the yarn 14.

[0038] For details, please refer to [link / reference]. Figure 3 By setting a curved groove, the suction pipe 19 can have a greater effect on the yarn 14 when it sucks in air, while also avoiding contact with it.

[0039] In one preferred embodiment, a sliding plate 11 is slidably mounted on the top of the mounting bracket 4. A vertical groove 12 is provided on the outer wall of the sliding plate 11. A slider 13 is vertically slidably mounted on the inner wall of the vertical groove 12. An intermediate gear 9 is rotatably mounted on the outer wall of the slider 13. A distance sensor 30 for monitoring the position of the slider 13 is installed at the inner top and inner bottom of the vertical groove 12. When the distance sensor 30 detects a change in the position of the slider 13, the distance sensor 30 controls the second motor 20 to start.

[0040] See Figure 8 By setting the distance sensor 30, the adjustment status of the tension wheel 3 can be accurately detected and reflected, so that the second motor 20 can be started immediately, that is, the cleaning component can be started. The outer walls of slider 13 and slide plate 11 are equipped with scales and pointers. The combination of the two can reflect the tension and adjustment of yarn 14. If the scale exceeds a certain value, although it can also adjust yarn 14, it can also remind the staff that the problem has exceeded the normal adjustment range and the machine can be stopped for inspection.

[0041] In one preferred embodiment, the inner bottom of the lint removal box 15 is also provided with an adhesive layer 26 for adhering lint.

[0042] The adhesive layer 26 can be used to adhere the inhaled lint and prevent it from flying around in the space. The adhesive layer 26 can be made of Velcro or other adhesive layers, and it only needs to be replaced periodically.

[0043] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-sided jacquard circular knitting machine, comprising a fixed frame (1) mounted on the circular knitting machine, characterized in that, The fixing frame (1) has a side plate and two horizontal plates, and also includes: Two guide pulleys (2) are respectively rotatably mounted on the upper and lower horizontal plates, and the guide pulleys (2) are used to guide the yarn (14) on the circular knitting machine; A mounting bracket (4) is installed on the side plate of the fixed frame (1), and a tensioning wheel (3) is installed on the mounting bracket (4) for adjusting the tension of the yarn (14). The adjustment component is used to drive the tension wheel (3) to rotate and drive the tension wheel (3) to tighten or loosen the yarn (14). Under normal conditions, the linear speed of the tension wheel (3) is the same as the conveying speed of the yarn (14). During the tightening process, the linear speed of the tension wheel (3) slows down, and during the loosening process, the linear speed of the tension wheel (3) speeds up. The adjustment assembly includes an electric slider (5) mounted on the top of the mounting bracket (4) and capable of horizontal sliding adjustment. The tension wheel (3) is rotatably mounted on the top of the electric slider (5) via a bearing seat, and the tension wheel (3) is also coaxially connected to a secondary gear (6). The adjustment assembly also includes a drive assembly for driving the secondary gear (6) to rotate and adjusting its speed; The drive assembly includes a main gear (7) rotatably mounted on the side wall of the mounting bracket (4), and a first motor (8) for driving the main gear (7) to rotate is also mounted on the mounting bracket (4). The drive assembly also includes an intermediate gear (9) that meshes with both the secondary gear (6) and the main gear (7). The shaft of the intermediate gear (9) is rotatably connected to two connecting rods (10), and the ends of the two connecting rods (10) are rotatably connected to the central shafts of the secondary gear (6) and the main gear (7), respectively. A pressure sensor (29) is installed on the inner contour of the tensioning wheel (3). When the pressure sensor (29) detects that the pressure of the yarn (14) on the tensioning wheel (3) is higher than the preset value, the pressure sensor (29) controls the electric slider (5) to move away from the yarn (14). Conversely, when the pressure sensor (29) detects that the pressure of the yarn (14) on the tensioning wheel (3) is lower than the preset value, the pressure sensor (29) controls the electric slider (5) to move closer to the yarn (14).

2. The single-sided jacquard circular knitting machine according to claim 1, characterized in that: It also includes a cleaning component, which includes a lint removal box (15) installed on the top plate of the fixed frame (1). The lint removal box (15) has an internal cavity and a through groove (16) on its side wall for the yarn (14) to pass through. The side plate of the fixed frame (1) also has a corresponding through hole for the yarn (14) to pass through. A lifting plate (17) is vertically slidably installed on the inner wall of the lint removal box (15). The top of the lifting plate (17) is connected to an air suction pipe (19). The cleaning assembly also includes a lifting assembly that controls the lifting plate (17) to move upward and creates negative pressure in the space below, and during the lifting process of the lifting plate (17), the suction pipe (19) moves closer to the yarn (14) but does not touch the yarn (14).

3. The single-sided jacquard circular knitting machine according to claim 2, characterized in that: The lifting assembly includes a sliding baffle (25) that is horizontally slidably installed at the bottom of the lifting plate (17). A first connecting rod (18) is rotatably installed between the sliding baffle (25) and the inner bottom of the cleaning box (15). A shaft (21) is fixed at the rotatable connection between the first connecting rod (18) and the cleaning box (15). A torsion spring sleeved on the shaft (21) is installed between the first connecting rod (18) and the inner side wall of the cleaning box (15). A second motor (20) for driving the shaft (21) to rotate and driving the first connecting rod (18) to swing is also installed on the outer wall of the cleaning box (15). The lifting assembly also includes a locking assembly, which locks the position of the first link (18) after it swings up, and releases the locking effect on the first link (18) when the locking time exceeds a preset value. The outer wall of the lint removal box (15) is also provided with an exhaust hole that can exhaust air in one direction.

4. The single-sided jacquard circular knitting machine according to claim 3, characterized in that: The locking assembly includes a chute (22) opened at the bottom of the cleaning box (15). A limit block (23) is slidably installed on the inner wall of the chute (22), and a second link (24) is rotatably connected between the limit block (23) and the first link (18). A groove is also opened at the bottom of the chute (22), and a protrusion (28) is vertically slidably installed in the groove. An airbag (27) is installed between the protrusion (28) and the groove, and the top cross section of the protrusion (28) is triangular.

5. The single-sided jacquard circular knitting machine according to claim 2, characterized in that: The top end of the suction pipe (19) is provided with a curved groove for the yarn (14) to enter, and the curved groove will not contact the yarn (14).

6. The single-sided jacquard circular knitting machine according to claim 3, characterized in that: The mounting bracket (4) is also slidably mounted on the top of the mounting plate (11). The outer wall of the mounting plate (11) is provided with a vertical groove (12). The inner wall of the vertical groove (12) is vertically slidably mounted with a slider (13). The intermediate gear (9) is rotatably mounted on the outer wall of the slider (13). The inner top and inner bottom of the vertical groove (12) are both equipped with a distance sensor (30) for monitoring the position of the slider (13). When the distance sensor (30) detects that the position of the slider (13) has changed, the distance sensor (30) controls the second motor (20) to start.

7. The single-sided jacquard circular knitting machine according to claim 3, characterized in that: The bottom of the cleaning box (15) is also covered with an adhesive layer (26) for adhering lint.

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