Self-running yarn feeder structure with telescopic function of computerized flat knitting machine

Abstract

The utility model discloses a computerized flat knitting machine self-running type yarn feeder structure with a telescopic function, which comprises a yarn lever seat, yarn levers arranged at the top of the yarn lever seat, yarn feeders arranged between the yarn levers, a yarn feeder moving mechanism and a yarn feeder telescopic mechanism, the yarn feeder moving mechanism and the yarn feeder telescopic mechanism are used for controlling the yarn feeders, an arc-shaped plate is arranged at the top of the yarn lever seat, and a lower fixing plate is arranged at the bottom of each yarn lever. The lower fixing plate is clamped at the arc-shaped top, the yarn bars are uniformly mounted at the top of the arc-shaped plate in an array manner, a mounting groove I and a mounting groove II are formed in two ends of each yarn bar, the yarn nozzles are respectively clamped in the mounting grooves I and the mounting grooves II, and the upper fixing plate is mounted at the top of each yarn bar and has elasticity; compared with the prior art, due to the fact that the yarn bars are arranged in an arc shape, after the yarn nozzles are installed, sharp points at the bottoms of the yarn nozzle pieces form an intersection point, the position of the intersection point is a lower thread point of yarn when the computerized flat knitting machine conducts knitting, knitting needles can conduct knitting with threads at the lower thread point, the yarn nozzle pieces arranged in the arc shape can be made into straight pieces and do not need to be bent, and machining difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of knitting flat knitting machines, in particular to a self-running yarn guide structure with a telescopic function for a computerized flat knitting machine. Background Technique

[0002] The self-running yarn guide for a computerized flat knitting machine, actually more commonly known as a "smart-running yarn guide", is an innovative yarn guide system that significantly improves the knitting efficiency and fabric quality of the computerized flat knitting machine, enhances the knitting efficiency and accuracy, improves the fabric quality, and reduces the waste piece rate.

[0003] During the operation of the self-running yarn guide, yarn avoidance is a key technical issue, which is directly related to the knitting efficiency and fabric quality. During the knitting process, the yarn needs to be accurately delivered to the yarn guide for knitting. However, due to the operation of the machine and the characteristics of the yarn, the yarn may interfere or entangle with other components of the machine, resulting in knitting interruption or a decrease in fabric quality. Therefore, the application of yarn avoidance technology is particularly important. For this reason, we propose a self-running yarn guide structure with a telescopic function for a computerized flat knitting machine to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a self-running yarn guide structure with a telescopic function for a computerized flat knitting machine to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A self-running yarn guide structure with a telescopic function for a computerized flat knitting machine, including a yarn bar seat, a yarn bar arranged on the top of the yarn bar seat, a yarn guide installed between the yarn bars, and a yarn guide moving mechanism and a yarn guide telescopic mechanism for controlling the yarn guide. An arc-shaped plate is provided on the top of the yarn bar seat, a lower fixing plate is provided at the bottom of the yarn bar, the lower fixing plate is clamped on the top of the arc, the yarn bars are uniformly arranged in an array on the top of the arc-shaped plate, installation grooves one and two are opened at both ends of the yarn bar, the yarn guides are respectively clamped inside the installation grooves one and two, and an upper fixing plate is installed on the top of the yarn bar, and the upper fixing plate has elasticity;

[0006] Both the yarn guide moving mechanism and the yarn guide telescopic mechanism are arranged at both ends of the arc-shaped plate. The yarn guide moving mechanism and the yarn guide telescopic mechanism are used to control the position of the yarn guide, which can effectively increase the intarsia efficiency and reduce the piece-making time. By arranging the yarn bars in an arc shape, the bottom tips of the yarn guide pieces form an intersection point after the yarn guides are installed. The intersection point is the lower yarn point of the yarn during the knitting of the computerized flat knitting machine. At this lower yarn point, the knitting needles can carry the yarn for knitting, and the arc-shaped arranged yarn guide pieces can be made into straight pieces without bending, reducing the processing difficulty.

[0007] Preferably, the yarn guide includes a shuttle box, a cover plate and a buckle. The two ends of the shuttle box are trapezoidal. A plurality of card slots are provided at both ends of the shuttle box. The card slots are arranged in pairs on the shuttle box. A compression spring is provided inside the card slot. The two ends of the shuttle box extend to be provided with mounting surfaces. The mounting surfaces are elastically connected to the shuttle box, and the compression spring abuts against one side of the mounting surface for auxiliary support.

[0008] The cover plate is clamped on the surface of the shuttle box, and there is a gap between the cover plate and the shuttle box.

[0009] Preferably, the yarn guide further includes a yarn guide piece and a buckle. The yarn guide piece is movably clamped between the cover plate and the shuttle box. A transmission rod is fixedly connected to the inner wall of the yarn guide piece. A shuttle box groove is provided on the surface of the shuttle box. The position of the shuttle box groove corresponds to that of the transmission rod, and a buckle is installed at the top of the transmission rod.

[0010] Preferably, the yarn guide moving mechanism includes a control motor, a first driving wheel and a plurality of heightening columns. The heightening columns are located at the top of the arc-shaped plate, and an installation strip is clamped on the top of the arc-shaped plate. The heightening columns are clamped on the top of the installation strip. A pair of motor plates are installed at the top of the heightening columns. The control motor is installed on the top of the motor plates. A through groove is provided at the bottom of the motor plates. The output end of the control motor corresponds to the position of the through groove. A first driving wheel is provided at the bottom of the motor plates. The first driving wheels are arranged staggeredly and are respectively located between the heightening columns. The first driving wheels are rotatably arranged on the top of the arc-shaped plate. The first driving wheels are clamped to the bottom of the output end of the control motor. A lower belt and an upper belt are respectively clamped outside the first driving wheels. The yarn guide can move along with the upper belt and the lower belt.

[0011] Preferably, the yarn guide moving mechanism further includes a pair of driven bases. The driven bases are movably clamped on the top of the arc-shaped plate. Driven wheels are rotatably arranged on the driven bases, and the driven wheels are also respectively clamped to the lower belt and the upper belt.

[0012] A first mounting seat and a second mounting seat are respectively clamped on the two sides of the driven bases.

[0013] Preferably, the yarn guide telescoping mechanism includes a telescoping motor and a mounting plate. The telescoping motor is arranged on the top of the arc-shaped plate, and a metal seat is installed on the top of the arc-shaped plate. The mounting plate is arranged on the top of the metal seat. The mounting plate is vertically bent. The telescoping motor is arranged on the surface of the mounting plate and the metal seat that are perpendicular to each other. The output end of the telescoping motor penetrates through the mounting plate, and a second driving wheel is installed on the output end. A rotating shaft is rotatably arranged on the mounting plate. A transmission strip is provided between the second driving wheel and the rotating shaft, and a joint is installed at one end of the rotating shaft.

[0014] One end of the joint is provided with a pair of transmission bars. A transmission bar base is arranged between the transmission bars. The pair of transmission bars are connected together through the transmission bar base. The position of the transmission bars corresponds to that of the buckles. A retaining ring is installed on the side of the transmission bars away from the joint.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, the yarn bars are arranged in an arc shape. After the yarn nozzles are installed, the bottom points of the yarn nozzle pieces form an intersection point. The intersection point is the lower yarn point of the yarn during the knitting of the computerized flat knitting machine. At this lower yarn point, the knitting needles can carry out yarn-carrying knitting. Moreover, the yarn nozzle pieces arranged in an arc shape can be made into straight pieces without bending, reducing the processing difficulty.

[0017] 2. When the present utility model is used for intarsia knitting on a computerized flat knitting machine, the yarn nozzles need to give way to the knitting needles. Ordinary yarn nozzles have no telescopic function, so they must move to the side and leave the knitting area. After the intarsia is completed, they move back to the knitting area. This leads to low efficiency. However, with the yarn nozzle telescopic mechanism, the yarn nozzles can rise to avoid the knitting needles, without having to move the yarn nozzles to the side and leave the knitting area, effectively increasing the intarsia efficiency and reducing the piece-making time.

[0018] 3. In the present utility model, the yarn bars are made of aluminum profiles to reduce the weight, which can reduce the load during use, avoid deformation of the overall yarn bar base due to the large number of evenly distributed along the yarn bar base and affect the normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the yarn nozzles driven by a belt on one side of the yarn bar of the present utility model;

[0021] Figure 3 It is a schematic diagram of the split structure of the yarn nozzles of the present utility model;

[0022] Figure 4 It is a schematic diagram of the installation structure at the driving wheel end of the present utility model;

[0023] Figure 5 It is a schematic diagram of the installation structure of the yarn bar and the mounting base of the present utility model;

[0024] Figure 6 It is a schematic diagram of the installation structure at the driven wheel end of the present utility model;

[0025] Figure 7 It is a schematic diagram of the structure of the yarn nozzle telescopic mechanism of the present utility model;

[0026] Figure 8 It is a schematic diagram of the structure of the yarn nozzles arranged in an arc shape of the present utility model;

[0027] In the figure: 1, yarn bar seat; 2, yarn bar; 3, yarn guide; 4, yarn guide moving mechanism; 5, yarn guide telescopic mechanism; 6, mounting strip; 7, metal seat; 21, mounting groove 1; 22, mounting groove 2; 23, lower fixing plate; 24, upper fixing plate; 31, shuttle box; 311, shuttle box groove; 312, clamping groove; 313, mounting surface; 32, cover plate; 33, yarn guide piece; 34, buckle; 41, control motor; 42, motor plate; 43, driving wheel 1; 44, heightening column; 45, lower belt; 46, upper belt; 47, mounting seat 1; 48, mounting seat 2; 49, driven base; 490, driven wheel; 51, telescopic motor; 52, mounting plate; 53, driving wheel 2; 54, drive bar base; 55, joint; 56, drive bar; 57, retaining ring. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-8 , the present invention provides a technical solution: a self-running yarn guide structure with a telescopic function for a computerized flat knitting machine, including a yarn bar seat 1, a yarn bar 2 arranged on the top of the yarn bar seat 1, a yarn guide 3 installed between the yarn bars 2, and a yarn guide moving mechanism 4 and a yarn guide telescopic mechanism 5 for controlling the yarn guide 3. An arc-shaped plate is provided on the top of the yarn bar seat 1, a lower fixing plate 23 is provided at the bottom of the yarn bar 2, and the lower fixing plate 23 is clamped on the top of the arc. The yarn bars 2 are installed in a uniform array on the top of the arc-shaped plate. Installation grooves 1 21 and installation grooves 2 22 are opened at both ends of the yarn bar 2, and the yarn guides 3 are respectively clamped inside the installation grooves 1 21 and installation grooves 2 22. An upper fixing plate 24 is installed on the top of the yarn bar 2, and the upper fixing plate 24 has elasticity;

[0030] Both the yarn guide moving mechanism 4 and the yarn guide telescopic mechanism 5 are arranged at both ends of the arc-shaped plate. The yarn guide moving mechanism 4 and the yarn guide telescopic mechanism 5 are used to control the position of the yarn guide 3, which can effectively improve the intarsia efficiency and reduce the piecing time. By arranging the yarn bars in an arc shape, the bottom tips of the yarn guide pieces form an intersection point after the yarn guides are installed. The intersection point is the lower yarn point of the yarn during the knitting of the computerized flat knitting machine. At this lower yarn point, the knitting needles can carry the yarn for knitting, and the arc-shaped arranged yarn guide pieces can be made into straight pieces without bending, reducing the processing difficulty.

[0031] Such as Figure 3As shown, in the process of use, to ensure the stability of the yarn guide 3 itself, the yarn guide 3 includes a shuttle box 31, a cover plate 32 and a buckle 34. Both ends of the shuttle box 31 are trapezoidal. A plurality of card slots 312 are opened at both ends of the shuttle box 31. The card slots 312 are arranged in pairs on the shuttle box 31. A compression spring is arranged inside the card slot 312. Both ends of the shuttle box 31 extend to be provided with mounting surfaces 313. The mounting surfaces 313 are elastically connected to the shuttle box 31, and the compression spring abuts against one side of the mounting surface 313 for auxiliary support;

[0032] The cover plate 32 is clamped on the surface of the shuttle box 31. There is a gap between the cover plate 32 and the shuttle box 31. Due to the acting force of the compression spring, the four mounting surfaces 313 deform and expand upward and downward. After the yarn guide 3 is placed on the yarn rod 2, a little damping force is increased to prevent the yarn guide 3 from shaking due to the gap in the first mounting groove 21 and the second mounting groove 22, which can ensure the stability of the subsequent operation of the equipment and avoid the situation of yarn breakage.

[0033] During the use process, the yarn guide 3 needs to give way to the knitting needle. To improve the efficiency of the equipment, the yarn guide 3 further includes a yarn guide piece 33 and a buckle 34. The yarn guide piece 33 is movably clamped between the cover plate 32 and the shuttle box 31. A transmission rod is fixedly connected to the inner wall of the yarn guide piece 33. A shuttle box groove 311 is opened on the surface of the shuttle box 31. The position of the shuttle box groove 311 corresponds to that of the transmission rod, and a buckle 34 is installed at the top of the transmission rod. The buckle 34 can be clamped on the transmission strip 56 and can move along with it, so as to play a role of avoidance, which can effectively increase the efficiency of intarsia and improve the overall processing efficiency of the equipment.

[0034] As Figure 4 shown, the position of the yarn guide 4 can be adjusted according to the position requirements of intarsia. The yarn guide moving mechanism 4 includes a control motor 41, a first driving wheel 43 and a plurality of heightening columns 44. The heightening columns 44 are located at the top of the arc-shaped plate, and an installation strip 6 is clamped on the top of the arc-shaped plate. The heightening columns 44 are clamped on the top of the installation strip 6. A pair of motor plates 42 are installed on the top of the heightening columns 44. The control motor 41 is installed on the top of the motor plate 42. A through groove is provided at the bottom of the motor plate 42. The output end of the control motor 41 corresponds to the position of the through groove. A first driving wheel 43 is provided at the bottom of the motor plate 42. The first driving wheels 43 are arranged in a staggered manner and are respectively located between the heightening columns 44. The first driving wheels 43 are rotatably arranged on the top of the arc-shaped plate. The first driving wheels 43 are clamped to the bottom of the output end of the control motor 41. A lower belt 45 and an upper belt 46 are respectively clamped outside the first driving wheels 43. The yarn guide 3 can move along with the upper belt 46 and the lower belt 45. As the control motor 41 operates, the position of the yarn guide can be controlled by means of the upper belt 46 and the lower belt 45, so as to make adjustments.

[0035] In order to reduce interference, the yarn mouth moving mechanism 4 further includes a pair of driven bases 49, which are movably clamped on the top of the arc plate, and driven wheels 490 are rotatably provided on the driven bases 49, and the driven wheels 490 are also clamped with the lower belt 45 and the upper belt 46 respectively;

[0036] A mounting seat 1 47 and a mounting seat 2 48 are respectively mounted on the driven bases 49 on both sides. The heights of the mounting seats 1 47 and 2 48 can be adjusted with the aid of the heightening columns 44 , and a gap is left for subsequent maintenance to reduce maintenance difficulties.

[0037] like Figure 5 As shown, in order to control the height position of the yarn mouth 3 and prevent the yarn mouth from interlacing during the weaving process, the yarn mouth telescopic mechanism 5 includes a telescopic motor 51 and a mounting plate 52, the telescopic motor 51 is arranged on the top of the arc plate, and a metal seat 7 is installed on the top of the arc plate, the mounting plate 52 is arranged on the top of the metal seat 7, the mounting plate 52 is vertically bent, the telescopic motor 51 is arranged on a surface perpendicular to the mounting plate 52 and the top of the metal seat 7, the output end of the telescopic motor 51 passes through the mounting plate 52, and a driving wheel 2 53 is installed on the output end, a rotating shaft is rotatably provided on the mounting plate 52, a transmission bar 56 is provided between the driving wheel 2 53 and the rotating shaft, and a joint 55 is installed at one end of the rotating shaft;

[0038] A pair of transmission bars 56 are installed at one end of the joint 55, and a transmission bar base 54 is provided between the transmission bars 56. The pair of transmission bars 56 are connected together through the transmission bar base 54. The position of the transmission bar 56 corresponds to the buckle 34. A retaining ring 57 is installed on the side of the transmission bar 56 away from the joint 55. Since the yarn bar 2 is an aluminum profile, it is impossible to tighten and loosen the screws multiple times with the threaded hole, which is easy to slip and increase the difficulty of assembly. Therefore, a metal seat 7 with a shape roughly the same as the yarn bar 2 is added. The metal seat 7 is an iron piece, which can effectively avoid the shortcomings of the aluminum profile, and the buckle is driven to move up and down by the rotation of the transmission bar 56, so that the yarn mouth piece moves up and down to realize the extension and retraction of the yarn mouth 3. The transmission bars 56 are symmetrically arranged on both sides of the yarn bar 2, each driving a yarn mouth 3, thereby controlling the up and down movement of the yarn mouth 3, and can make the yarn mouth 3 rise to avoid the knitting needle, without moving the yarn mouth 3 to the side to leave the weaving area, which can effectively increase the intarsia efficiency and reduce the film forming time.

[0039] Working principle: The self-running yarn mouth structure with telescopic function of the computerized flat knitting machine mainly includes a yarn bar seat 1, a yarn bar 2, a yarn mouth 3, a yarn mouth moving mechanism 4 and a yarn mouth telescopic mechanism 5. Two yarn bar seats 1 are placed at both ends of the yarn bar 2, the yarn bar 2 is fixed on the yarn bar seat 1, and the yarn bar seat 1 is arc-shaped. Several yarn bars 2 are evenly distributed along the arc of the yarn bar seat 1, and the yarn mouth moving mechanism 4 and the yarn mouth telescopic mechanism 5 are installed on the yarn bar seats 1 at both ends. The yarn mouth 3 is installed on both sides of the yarn bar 2, and a total of 4 yarn mouths are placed on one yarn bar 2, and a sand mouth 3 is placed on each side and both ends.

[0040] See Figure 3 shown, the shape of the yarn guide 3 and the shuttle box 31 is rhombic, corresponding to the installation groove one 21 and the installation groove two 22 opened on the yarn bar 2. The yarn guide 3 is inserted from both ends of the yarn bar 2 to achieve limited installation. Four card slots 312 are opened at the four corners of the shuttle box 31 for placing compression springs. The shuttle box is made of plastic. Due to the action of the compression springs, the four installation surfaces 313 deform and expand towards the upper and lower ends, adding a little damping force after the yarn guide 3 is inserted into the yarn bar 2, preventing the yarn guide 3 from shaking due to gaps in the installation groove one 21 and the installation groove two 22 and affecting normal operation. The yarn guide piece 33 is placed in the shuttle box groove 311 with a gap, and then covered with a cover plate 32. The yarn guide piece 33 can move in the up and down direction of the shuttle box 31, and a buckle 34 is installed at the upper end of the yarn guide piece 33.

[0041] See Figure 4 、 Figure 6 shown, the yarn guide moving mechanism 4 is divided into a motor end and a driven wheel end. The motor end controls the motor 41 installed on the motor plate 42. The motor plate 42 is fixed on the yarn bar seat 1 through the heightening column 44, and the driving wheel one 43 is installed on the output end of the control motor 41. The driven wheel end, the driven wheel 490 is installed on the driven wheel mounting seat 49, and the driven wheel mounting seat 49 is installed on the mounting seat one 48 and the mounting seat two 49. See Figure 5 shown, the mounting strip 6 is fixed on the yarn bar seat 1. The metal seat 7 and the yarn bar 2 are both installed on the mounting strip 6, and the end face shape of the metal seat 7 is roughly the same as that of the yarn bar 2. Since the yarn bar 2 is made of aluminum profile to reduce weight, avoiding deformation of the overall yarn bar seat 1 due to the large number of evenly distributed along the yarn bar seat 1 and affecting normal use. However, usually, it is difficult to perform multiple screwing and unscrewing operations on the aluminum profile with added threaded holes, and it is easy to slip the thread, increasing the assembly difficulty. Therefore, a metal seat 7 with a shape roughly the same as that of the yarn bar 2 is added. The metal seat 7 is an iron part, which can effectively avoid the disadvantages of the aluminum profile. The fixing seat 48 and the yarn guide telescopic mechanism 5 are installed on the metal seat 7. The fixing seat 48 is installed on the mounting seat 4. Then, the driving wheel end and the driven wheel end are connected by a belt to achieve belt drive. The belt is in an open form. After being placed at the 34 position of the yarn guide 3 at both ends and retracted by the belt cover plate 34, it is fixed. See Figure 2 shown, the heights of the heightening columns 44 are inconsistent, and the heights of the corresponding fixing seats 48 and 47 are also inconsistent. Therefore, the belts are placed in a staggered manner up and down. The upper belt 46 is connected to one of the yarn guides on one side of the yarn bar, and the lower belt 47 is connected to the other yarn guide on one side of the yarn bar. The movement of the yarn guide is driven through belt drive. The structure of the yarn guide moving mechanism 4 on the other side of the yarn bar 2 is the same as that on the opposite side, except that the positions of the motor end and the driven wheel end are exchanged with those on the opposite side.

[0042] See Figure 4As shown, for the yarn guide telescoping mechanism 5, the telescoping motor mounting plate 52 is fixed on the metal base 7, the telescoping motor 51 is mounted on the telescoping motor mounting plate 52, and the driving wheel 53 is mounted on the shaft of the telescoping motor 51. A number of drive bar mounting seats 54 are fixed on the yarn bar 2 and are linearly distributed along the length direction of the yarn bar 2. The drive bar 56 passes through the drive bar mounting seats 54, with one end mounted with a joint 55 and the other end mounted with a retaining ring 57. See Figure 6 As shown, one end of the joint 55 has the same shape as the drive bar 56, and the other end has a synchronous pulley tooth shape and is connected to the driving wheel 53 through a belt. The drive bar 56 is driven to rotate through the belt connection. See Figure 7 As shown, the drive bar 56 is in a gourd shape. The large-end round hole is mounted on the drive bar mounting seat 54, and the small-end round hole is engaged with the snap 34 of the yarn guide 3. The snap is driven to move up and down by the rotation of the drive bar 56, so as to realize the up and down movement of the yarn guide piece and the telescoping action of the yarn guide 3. The drive bars 56 are symmetrically arranged on both sides of the yarn bar 2, each driving one yarn guide 3.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The self-running yarn guide structure with a telescopic function for a computerized flat knitting machine, comprising a yarn rail seat (1), a yarn rail (2) arranged on the top of the yarn rail seat (1), a yarn guide (3) installed between the yarn rails (2), and a yarn guide moving mechanism (4) and a yarn guide telescopic mechanism (5) for controlling the yarn guide (3), characterized in that: The top of the yarn roller seat (1) is provided with an arc-shaped plate, the bottom of the yarn roller (2) is provided with a lower fixing plate (23), the lower fixing plate (23) is clamped on the top of the arc, the yarn rollers (2) are evenly arranged and installed on the top of the arc-shaped plate, both ends of the yarn roller (2) are provided with a first installation groove (21) and a second installation groove (22), the yarn nozzles (3) are respectively clamped inside the first installation groove (21) and the second installation groove (22), and the top of the yarn roller (2) is installed with an upper fixing plate (24), and the upper fixing plate (24) has elasticity; The yarn nozzle moving mechanism (4) and the yarn nozzle telescoping mechanism (5) are both arranged at both ends of the arc-shaped plate, and the yarn nozzle moving mechanism (4) and the yarn nozzle telescoping mechanism (5) are used to control the position of the yarn nozzle (3), which can effectively improve the intarsia efficiency and reduce the sheeting time.

2. The self-running yarn guide structure with a telescopic function for a flat knitting machine according to claim 1, characterized in that: The yarn nozzle (3) includes a shuttle box (31), a cover plate (32) and a buckle (34). Both ends of the shuttle box (31) are trapezoidal, and a plurality of card slots (312) are opened at both ends of the shuttle box (31). The card slots (312) are arranged in pairs on the shuttle box (31), and a compression spring is arranged inside the card slots (312). Both ends of the shuttle box (31) are extended with installation surfaces (313), and the installation surfaces (313) are elastically connected to the shuttle box (31), and the compression spring abuts against one side of the installation surface (313) for auxiliary support; The cover plate (32) is clamped on the surface of the shuttle box (31), and there is a gap between the cover plate (32) and the shuttle box (31).

3. The self-running yarn guide structure with a telescopic function for a flat knitting machine according to claim 2, characterized in that: The yarn nozzle (3) further includes a yarn nozzle piece (33) and a buckle (34). The yarn nozzle piece (33) is movably clamped between the cover plate (32) and the shuttle box (31). A transmission rod is fixedly connected to the inner wall of the yarn nozzle piece (33). A shuttle box groove (311) is opened on the surface of the shuttle box (31). The position of the shuttle box groove (311) corresponds to that of the transmission rod, and a buckle (34) is installed at the top of the transmission rod.

4. The self-running yarn guide structure with telescopic function for flat knitting machines according to claim 1, characterized in that: The yarn nozzle moving mechanism (4) includes a control motor (41), a first driving wheel (43) and a plurality of heightening columns (44). The heightening columns (44) are located on the top of the arc-shaped plate, and an installation strip (6) is clamped on the top of the arc-shaped plate. The heightening columns (44) are clamped on the top of the installation strip (6). A pair of motor plates (42) are installed on the top of the heightening columns (44). The control motor (41) is installed on the top of the motor plates (42). A through groove is provided at the bottom of the motor plates (42). The output end of the control motor (41) corresponds to the position of the through groove. A first driving wheel (43) is provided at the bottom of the motor plates (42). The first driving wheels (43) are arranged staggeredly and are respectively located between the heightening columns (44). The first driving wheels (43) are rotatably arranged on the top of the arc-shaped plate. The first driving wheels (43) are clamped to the bottom of the output end of the control motor (41). A lower belt (45) and an upper belt (46) are respectively clamped outside the first driving wheels (43), and the yarn nozzle (3) can move along with the upper belt (46) and the lower belt (45).

5. The self-running yarn guide structure with a telescopic function for a flat knitting machine according to claim 4, characterized in that: The yarn nozzle moving mechanism (4) further includes a pair of driven bases (49), the driven bases (49) are movably clamped on the top of the arc-shaped plate, a driven wheel (490) is rotatably arranged on the driven bases (49), and the driven wheel (490) is also clamped with the lower belt (45) and the upper belt (46) respectively; A first mounting seat (47) and a second mounting seat (48) are respectively clamped on the two sides of the driven bases (49).

6. The self-running yarn guide structure with a telescopic function of the flat knitting machine according to claim 1, characterized in that: The yarn nozzle telescopic mechanism (5) includes a telescopic motor (51) and a mounting plate (52), the telescopic motor (51) is arranged on the top of the arc-shaped plate, and a metal seat (7) is installed on the top of the arc-shaped plate. The mounting plate (52) is arranged on the top of the metal seat (7), the mounting plate (52) is vertically bent, the telescopic motor (51) is arranged on a surface perpendicular to the top of the mounting plate (52) and the metal seat (7), the output end of the telescopic motor (51) penetrates through the mounting plate (52), and a second driving wheel (53) is installed on the output end. A rotating shaft is rotatably arranged on the mounting plate (52), a transmission bar (56) is arranged between the second driving wheel (53) and the rotating shaft, and a joint (55) is installed at one end of the rotating shaft; A pair of transmission bars (56) are installed at one end of the joint (55), a transmission bar base (54) is arranged between the transmission bars (56), the pair of transmission bars (56) are connected together through the transmission bar base (54), the position of the transmission bars (56) corresponds to that of the buckle (34), and a retaining ring (57) is installed on the side of the transmission bars (56) away from the joint (55).

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