Transverse driving device suitable for needle plate of flat knitting machine and flat knitting machine thereof

Abstract

The utility model discloses a transverse driving device suitable for a needle plate of a flat knitting machine. The transverse driving device comprises a motor, a rocker arm, a left sliding rod, a right sliding rod, at least one left limiting hole and at least one right limiting hole, an output shaft of the motor is connected with a first end of a rocker arm, the axial direction of the output shaft is perpendicular to the length direction of the rocker arm, a second end of the rocker arm is connected with a right sliding rod, the right sliding rod is connected with the right part of the needle plate, and the length directions of the right sliding rod and the rocker arm are parallel to the base plane of the needle plate; the right limiting hole is formed in the horizontal direction, the right sliding rod penetrates through the right limiting hole to be connected with the right portion of the needle plate, and the right sliding rod can only do transverse reciprocating motion in the width range of the right limiting hole in the vertical direction. The left limiting hole is formed in the horizontal direction, the left sliding rod penetrates through the left limiting hole to be connected with the left portion of the needle plate, the left sliding rod can only do transverse back-and-forth movement in the width range of the left limiting hole in the vertical direction, the working requirement for transverse high-speed back-and-forth movement of the needle plate is met, and stability is achieved. The utility model further discloses the flat knitting machine comprising the transverse driving device.

Description

Technical Field

[0001] This utility model belongs to the field of flat knitting machine technology, specifically relating to a horizontal drive device suitable for the needle plate of a flat knitting machine and the flat knitting machine thereof. Background Technology

[0002] During the knitting process, the needle plate of the flat knitting machine needs to perform repeated high-speed movements in both horizontal and vertical directions, and then cooperate with the needle bed to knit fabrics with specific structures and shapes.

[0003] Patent document CN202131455U discloses a horizontal control device for a flat knitting machine, which consists of a frame, a motor, and limit switches. Each end of the needle plate on the frame is equipped with a limit switch, and a stepper motor is installed on one side of the needle plate. The limit switches can be used to adjust the width on the horizontal guide plate, and the motor drives the rocker arm to move left and right.

[0004] Compared with manual flat knitting machines, the above-mentioned existing technology has many advantages such as light frame weight, low production cost, low price, convenient operation, reduced labor intensity of operators, and improved efficiency. However, the structure is relatively simple and there is room for improvement.

[0005] Two patent documents with announcement number CN214458665U disclose an electronic transverse transmission mechanism in the transverse movement device of a warp knitting machine, including a motor, a transverse assembly, and a support structure for mounting and fixing the transverse assembly. The composition and sequential connection relationship of the transverse assembly are as follows: the motor is connected to a ball screw via a coupling, the ball screw nut drives the guide push rod to move through the transmission connecting plate, the guide push rod drives the ball head connecting plate to move, thereby driving the ball head connected to the ball head connecting plate to move, the electronic transverse transmission mechanism pushes the top rod to move through the ball head, and the top rod transversely pushes the comb assembly connected to it to move a corresponding distance.

[0006] The electronic transverse transmission mechanism disclosed in the aforementioned patent document 2 has advantages such as compact structure, high motion accuracy, low cost, and convenient ball head position adjustment, which greatly improves the production efficiency of warp knitting machines, increases product diversity, and reduces product costs. However, this prior art, as disclosed, is more suitable for driving the "guide bar" of the flat knitting machine to make transverse movements, but not suitable for driving the "needle plate" of the flat knitting machine to make transverse movements. The reason is that, as mentioned above, during the knitting process of the flat knitting machine, the "needle plate" needs to make high-speed and precise transverse movements, while the main function of the "guide bar" is to guide the yarn, and its movement is much lower than that of the needle plate. Therefore, the "guide bar" can be driven transversely by a ball screw. However, the main characteristic of ball screw drive is that the rotation angle is small, requiring more steps to achieve a larger displacement, resulting in low transmission efficiency. It is not suitable for the high-speed transverse reciprocating work requirements of the "needle plate". Moreover, the screw is prone to wear and has a weak load capacity.

[0007] In summary, the present invention aims to provide a lateral drive device suitable for the needle plate of a flat knitting machine. Summary of the Invention

[0008] In view of the problems in the related technologies, this utility model proposes a transverse drive device for the needle plate of a flat knitting machine and the same for the flat knitting machine, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0009] The technical solution of this utility model is implemented as follows:

[0010] A transverse drive device for a flat knitting machine needle plate includes a motor, a rocker arm, a left slide rod, a right slide rod, at least one left limiting hole and at least one right limiting hole;

[0011] The motor has an output shaft that is directly or indirectly connected to the first end of the rocker arm. The axial direction of the output shaft is perpendicular to the length direction of the rocker arm. The second end of the rocker arm is directly or indirectly connected to the right slide rod. The right slide rod is directly or indirectly connected to the right side of the needle plate. The length directions of both the right slide rod and the rocker arm are parallel to the base surface of the needle plate.

[0012] The right limiting hole is set in the horizontal direction, and the right slide rod passes through the right limiting hole to connect the right part of the needle plate. The right slide rod can only make a horizontal reciprocating movement within the width range of the right limiting hole in the vertical direction.

[0013] The left limiting hole is set in the horizontal direction, and the left slide rod passes through the left limiting hole to connect the left part of the needle plate. The left slide rod can only make a horizontal back-and-forth movement within the width range of the left limiting hole in the vertical direction.

[0014] The left and right limiting holes are at the same horizontal level;

[0015] The motor drives the rocker arm to reciprocate by less than 180° by rotating the output shaft. The rocker arm drives the right slide rod to reciprocate laterally under the restriction of the right limiting hole, thereby indirectly driving the needle plate to reciprocate laterally. The left slide rod reciprocates laterally with the needle plate under the restriction of the left limiting hole.

[0016] Compared with the prior art, this utility model is based on the working motion characteristics of the needle plate. The specific design uses a transmission structure such as a rocker arm and a slide rod to convert the rotation of the motor into the lateral reciprocating motion of the needle plate. The transmission efficiency is high, which is suitable for the working requirements of the needle plate in high-speed lateral reciprocating motion. It has better load capacity and longer service life. At the same time, it is equipped with limit hole constraints to guide the movement of the slide rod, thereby making the lateral movement of the needle plate more accurate and stable.

[0017] Preferably, the rocker arm includes a connecting rod and a connecting rod swing block, the connecting rod swing block is fixed to the output shaft and the two are relatively stationary; the two ends of the connecting rod are respectively provided with a first ball bearing and a second ball bearing, and the first ball bearing and the connecting rod swing block form a rotational connection. The ball bearing with high load-bearing capacity is particularly suitable for the high-speed working requirements of this utility model and can effectively extend the service life of this utility model.

[0018] Preferably, the lateral drive device further includes a right guide rod and a right mounting block, the second ball bearing of the rocker arm is rotatably connected to the right mounting block, the right slide rod and the right guide rod are both fixedly mounted on the right mounting block and the three are relatively stationary, and the axes of the right slide rod and the right guide rod are parallel;

[0019] The right limiting hole is provided in two parts, which are respectively for the right sliding rod and the right guide rod to pass through. The right sliding rod and the right guide rod can only make lateral back-and-forth movements within the width range of the right limiting hole in the vertical direction. The stability of the lateral movement of the right sliding rod is further improved by designing the right guide rod.

[0020] More preferably, the lateral drive device further includes a left guide rod and a left mounting block, the left slide rod and the left guide rod are both fixedly mounted on the left mounting block and the three are relatively stationary, and the axes of the left slide rod and the left guide rod are parallel;

[0021] The left limiting hole is provided in two places, through which the left sliding rod and the left guide rod pass respectively. The left sliding rod and the left guide rod can only move laterally back and forth with the needle plate within the width range of the left limiting hole in the vertical direction. The stability of the left sliding rod's lateral movement is further improved by designing the left guide rod.

[0022] Preferably, the connecting rod swing block has a swinging part and a first shaft hole fixedly connected to the output shaft. After installation, the swinging part of the connecting rod swings above the first shaft hole. The swinging part is rotatably connected to the first ball bearing. The second ball bearing is connected to the bottom or near the bottom of the right mounting block, which can reduce the overall force on the transmission mechanism and improve the smoothness of transmission.

[0023] Preferably, the lateral drive device further includes a motor bracket, the motor bracket having a second shaft hole, the output shaft of the motor passing through the second shaft hole and then connecting and fixing the connecting rod swing block, the motor bracket having limit posts on both symmetrical sides of the connecting rod swing block, the horizontal height of the two limit posts being flush with or higher than the output shaft, the design of the limit posts on both sides preventing the connecting rod swing block from over-rotating, thereby avoiding collisions and pulling of the linked parts and fabrics.

[0024] This utility model also discloses a flat knitting machine, including at least one set of the above-mentioned transverse drive devices suitable for the needle plate of the flat knitting machine.

[0025] Preferably, the flat knitting machine further includes a left needle holder and a right needle holder that vibrate in the vertical direction. The left and right needle holders are located at the same horizontal height and are symmetrically arranged. The left needle holder has the left limiting hole, and the right needle holder has the right limiting hole. The bottom of the left and right needle holders is connected to a vibration drive device to realize the high-speed vertical movement of the needle plate.

[0026] The number of right limiting holes is equal to or greater than the number of groups of transverse drive devices. The number of left limiting holes is the same as that of right limiting holes. The left and right limiting holes are elongated holes. In conjunction with the high-speed vertical vibration of the needle seat, the elongated hole design can form an appropriate amount of movable fit space and reduce the load on the needle seat during vibration.

[0027] Preferably, the knitting flat knitting machine further includes a left guide block and a right guide block, wherein the number of right guide blocks is the same as the number of sets of transverse drive devices, and the number of left guide blocks is the same as the number of right guide blocks;

[0028] The needle plate is located between the opposite sides of the left and right needle seats. The opposite sides of the left and right needle seats are respectively provided with left and right slide rails adapted to the number and size of the left and right guide blocks. The sliding direction of the left and right slide rails is vertical. The left and right limit holes are respectively opened in the left and right slide rails. The left and right needle seats are also provided with left and right through holes corresponding to the number of left and right guide blocks. The left and right through holes are elongated holes.

[0029] Both the left and right guide blocks are provided with at least two through holes and one fixing hole;

[0030] The two through holes of the right guide block are respectively for the right slide rod and the right guide rod to pass through. A fastener passes through the right through pin hole and is fastened to the pin hole, thereby restricting the right guide block to slide only in the slide rail and only within the vertical width range of the right through pin hole. The two through holes are in a horizontal state.

[0031] The two through holes of the left guide block are respectively for the left slide rod and the left guide rod to pass through. A fastener passes through the left through pin hole and is fastened to the pin hole, thereby restricting the left guide block to slide only in the slide rail and only within the vertical width range of the left through pin hole. The two through holes are in a horizontal state.

[0032] The design of left and right guide blocks improves the stability of the slide bar's lateral movement under high-speed vertical vibration, while also surrounding and maintaining the shape of the slide bar to prevent deformation and bending during long-term vibration and collision, which would affect the accuracy of weaving.

[0033] Preferably, the flat knitting machine is equipped with four sets of horizontal drive devices, which can drive four needle plates. The number of patterns that the flat knitting machine can knit is directly proportional to the number of needle plates. Four needle plates offer relatively high cost-effectiveness, wide applicability, and meet market demands. Specifically, the four motors are on the same horizontal plane and are arranged in a V-shape with the vertical plane parallel to the needle plates as the plane of symmetry. The output shafts of the four symmetrically distributed motors are arranged opposite each other in pairs. The connecting rods connecting the two motors away from the needle plates are longer than the connecting rods connecting the two motors closer to the needle plates. Because the output shafts of the motors in the horizontal drive devices are perpendicular to the rocker arms, multiple motors can be arranged relatively compactly. Compared with screw drives that are parallel to the motor output shafts, the multiple motors in this invention do not need to be placed side by side, thus occupying less space. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a transverse drive device for a flat knitting machine needle plate according to the present invention;

[0035] Figure 2 This is a schematic diagram of the rotating connection structure between the second end of the rocker arm and the right mounting block;

[0036] Figure 3 This is a schematic diagram of the structure of a flat knitting machine according to the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of a flat knitting machine equipped with four sets of transverse drive devices according to this utility model;

[0038] Figure 5 This is a schematic diagram of the right needle holder structure;

[0039] Figure 6 This is a schematic diagram of the connection structure between the right mounting block and the right guide block.

[0040] Marker explanation:

[0041] A. Rocker arm;

[0042] A1, connecting rod; A101, first ball bearing; A102, second ball bearing;

[0043] A2, connecting rod and pendulum block; A201, swinging part;

[0044] 3. Motor; 301. Output shaft;

[0045] 4. Right mounting block; 401. Right shaft hole; 402. Set screw hole;

[0046] 5. Right slider;

[0047] 6. Right guide rod;

[0048] 7. Right pin seat; 701. Right limiting hole; 702. Right slide rail; 703. Right through pin hole;

[0049] 8. Needle plate;

[0050] 9. Left mounting block;

[0051] 10. Left slider;

[0052] 11. Left pin seat;

[0053] 12. Left guide rod;

[0054] 13. Motor bracket; 1301. Limiting post;

[0055] 14. Right guide block; 1401. Through rod hole; 1402. Fixing pin hole. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0058] Example 1

[0059] like Figures 1 to 6 As shown, a transverse drive device suitable for the needle plate of a flat knitting machine includes a rocker arm A, a motor 3, a right slide bar 5, a left slide bar 10, at least one right limiting hole 701 and at least one left limiting hole.

[0060] The motor 3 has an output shaft 301, which is directly or indirectly connected to the first end of the rocker arm A. The axial direction of the output shaft 301 is perpendicular to the length direction of the rocker arm A. The second end of the rocker arm A is directly or indirectly connected to the right slide rod 5, which is directly or indirectly connected to the right side of the needle plate 8. The length directions of both the right slide rod 5 and the rocker arm A are parallel to the base surface of the needle plate 8.

[0061] The right limiting hole 701 is provided horizontally, and the right slide rod 5 passes through the right limiting hole 701 to connect the right part of the needle plate 8. The right slide rod 5 can only make a horizontal back-and-forth movement within the width range of the right limiting hole 701 in the vertical direction.

[0062] The left limiting hole is provided horizontally, and the left slide rod 10 passes through the left limiting hole to connect the left part of the needle plate 8. The left slide rod 10 can only make a horizontal back-and-forth movement within the width range of the left limiting hole in the vertical direction.

[0063] The left limiting hole and the right limiting hole 701 are at the same horizontal level.

[0064] The motor 3 drives the rocker arm A to reciprocate by less than 180° by rotating the output shaft 301. The rocker arm A drives the right slide bar 5 to reciprocate laterally under the restriction of the right limiting hole 701, thereby indirectly driving the needle plate 8 to reciprocate laterally. The left slide bar 10 reciprocates laterally with the needle plate 8 under the restriction of the left limiting hole.

[0065] In this embodiment, the rocker arm A includes a connecting rod A1 and a connecting rod block A2. The connecting rod block A2 is connected and fixed to the output shaft 301 of the motor 3 and the two are relatively stationary. The first end and the second end of the connecting rod A1 are respectively equipped with a first ball bearing A101 and a second ball bearing A102. The first ball bearing A101 and the connecting rod block A2 form a rotatable connection.

[0066] In this embodiment, a right mounting block 4 and a right guide rod 6 are also included. The second end of the rocker arm A is rotatably connected to the right mounting block 4. The right mounting block 4 has two parallel right shaft holes 401 and set screw holes 402 that communicate with the two right shaft holes 401 respectively. The right slide rod 5 and the right guide rod 6 are respectively inserted into the right shaft holes 401 and fixed by set screws. The right slide rod 5 and the right guide rod 6 are both fixedly installed on the right mounting block 4 and the three are relatively stationary. After installation, the axes of the right slide rod 5 and the right guide rod 6 are parallel.

[0067] The right limiting hole 701 is provided in two parts, for the right sliding rod 5 and the right guide rod 6 to pass through respectively. The right sliding rod 5 and the right guide rod 6 can only make lateral back-and-forth movements within the width range of the right limiting hole 701 in the vertical direction.

[0068] In this embodiment, a left mounting block 9 and a left guide rod 12 are also included. The left mounting block 9 has two parallel left shaft holes and set screw holes that communicate with the two left shaft holes respectively. The left slide rod 10 and the left guide rod 12 are respectively inserted into the left shaft holes and fixed by set screws. The left slide rod 10 and the left guide rod 12 are both fixedly installed on the left mounting block 9 and the three are relatively stationary. After installation, the axes of the left slide rod 10 and the left guide rod 12 are parallel.

[0069] There are two left limiting holes, which are respectively for the left slide rod 10 and the left guide rod 12 to pass through. The left slide rod 10 and the left guide rod 12 can only move laterally back and forth with the needle plate 8 within the vertical width range of the left limiting hole.

[0070] In this embodiment, the connecting rod swing block A2 has an integrally formed swing part A201 and a first shaft hole. The first shaft hole is fixedly connected to the output shaft 301. After installation, the swing part A201 of the connecting rod swing block A2 swings above the first shaft hole. The swing part A201 is rotatably connected to the first ball bearing A101, and the second ball bearing A102 is rotatably connected to the bottom or near the bottom of the right mounting block 4.

[0071] In this embodiment, a motor bracket 13 is also included. The motor bracket 13 is provided with a second shaft hole. The output shaft 301 of the motor 3 passes through the second shaft hole and is then connected and fixed to the connecting rod swing block A2. The motor bracket 13 is provided with protruding limiting posts 1301 on both sides of the connecting rod swing block A2. The horizontal height of the two limiting posts 1301 is flush with or higher than the output shaft 301.

[0072] Example 2

[0073] like Figures 1 to 6 As shown, a flat knitting machine includes a frame, a needle bed, and at least one set of transverse drive devices for the needle plate of the flat knitting machine as described in Embodiment 1, wherein the needle plate 8 is located above the needle bed.

[0074] Specifically, this embodiment is provided with four sets of the transverse drive devices described in Embodiment 1; the four motors 3 are on the same horizontal plane and are arranged in a V-shape with the vertical plane parallel to the needle plate 8 as the symmetrical plane. The output shafts 301 of the four symmetrically distributed motors 3 are arranged opposite each other in pairs. The connecting rod A1 connecting the two motors 3 far away from the needle plate 8 is longer than the connecting rod A1 connecting the two motors 3 close to the needle plate 8.

[0075] In this embodiment, a right needle seat 7 and a left needle seat 11 that vibrate in the vertical direction are also included. The right needle seat 7 and the left needle seat 11 are located at the same horizontal height and are arranged symmetrically from left to right. The right needle seat 7 has the right limiting hole 701 and the left needle seat 11 has the left limiting hole. The bottom of the right needle seat 7 and the left needle seat 11 are connected to a vibration driving device (conventional design, not shown in the figure).

[0076] The number of right limiting holes 701 is equal to or greater than the number of groups of the transverse drive device, and the number of left limiting holes is the same as the number of right limiting holes 701. Specifically, this embodiment is designed with eight right limiting holes 701 and eight left limiting holes. The eight right limiting holes 701 are arranged in pairs, one above the other. In a group of right limiting holes 701, the upper right limiting hole 701 is for the right guide rod 6 to pass through, and the lower right limiting hole 701 is for the right sliding rod 5 to pass through. The design and arrangement of the eight left limiting holes are the same as the right limiting holes 701.

[0077] Both the left limiting hole and the right limiting hole 701 are elongated holes.

[0078] In this embodiment, a left guide block and a right guide block 14 are also included. The number of right guide blocks 14 is the same as the number of groups of the lateral drive device, and the number of left guide blocks is the same as the number of right guide blocks 14; specifically, there are four right guide blocks 14 and four left guide blocks.

[0079] The needle plate 8 is located between the opposite sides of the left and right needle seats 7. The opposite sides of the left and right needle seats 7 are respectively provided with left and right slide rails 702 adapted to the number and size of the left and right guide blocks 14. The sliding direction of the left and right slide rails 702 is vertical. A set of left and right limiting holes 701 are respectively opened in one of the left and right slide rails 702. The left and right needle seats 7 are also provided with left and right through holes 703 corresponding to the number of left and right guide blocks 14, specifically four left through holes and four right through holes 703. The left and right through holes 703 are elongated holes.

[0080] Both the left guide block and the right guide block 14 are provided with at least two through holes 1401 and at least one fastening hole 1402.

[0081] The two through holes 1401 of the right guide block 14 allow the right slide rod 5 and the right guide rod 6 to pass through respectively. A fastener (specifically a screw) passes through the right through hole 703 and is fastened to the fastener hole 1402, thereby restricting the right guide block to slide only within the slide rail and only within the vertical width range of the right through hole 703. The two through holes 1401 are in a horizontal state.

[0082] The two through holes of the left guide block allow the left slide rod 10 and the left guide rod 12 to pass through respectively. A fastener (specifically a screw) passes through the left through hole and is fastened to the fastener hole, thereby restricting the left guide block to slide only within the slide rail and only within the vertical width range of the left through hole. The two through holes are in a horizontal state.

[0083] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A cross drive suitable for use with a needle plate of a flat knitting machine, characterized in that, Includes a motor, rocker arm, left slide bar, right slide bar, at least one left limiting hole and at least one right limiting hole; The motor has an output shaft that is directly or indirectly connected to the first end of the rocker arm. The axial direction of the output shaft is perpendicular to the length direction of the rocker arm. The second end of the rocker arm is directly or indirectly connected to the right slide rod. The right slide rod is directly or indirectly connected to the right side of the needle plate. The length directions of both the right slide rod and the rocker arm are parallel to the base surface of the needle plate. The right limiting hole is set in the horizontal direction, and the right slide rod passes through the right limiting hole to connect the right part of the needle plate. The right slide rod can only make a horizontal reciprocating movement within the width range of the right limiting hole in the vertical direction. The left limiting hole is set in the horizontal direction, and the left slide rod passes through the left limiting hole to connect the left part of the needle plate. The left slide rod can only make a horizontal back-and-forth movement within the width range of the left limiting hole in the vertical direction. The left and right limiting holes are at the same horizontal level; The motor drives the rocker arm to reciprocate by less than 180° by rotating the output shaft. The rocker arm drives the right slide rod to reciprocate laterally under the restriction of the right limiting hole, thereby indirectly driving the needle plate to reciprocate laterally. The left slide rod reciprocates laterally with the needle plate under the restriction of the left limiting hole.

2. A cross drive suitable for use with a needle plate of a flat knitting machine according to claim 1, characterized in that, The rocker arm includes a connecting rod and a connecting rod block. The connecting rod block is fixed to the output shaft and the two are relatively stationary. The two ends of the connecting rod are respectively provided with a first ball bearing and a second ball bearing. The first ball bearing and the connecting rod block form a rotatable connection.

3. A cross drive suitable for use with a needle plate of a flat knitting machine according to claim 2, characterized in that, It also includes a right guide rod and a right mounting block. The second ball bearing of the rocker arm is rotatably connected to the right mounting block. The right slide rod and the right guide rod are both fixedly installed on the right mounting block and the three are relatively stationary. The axes of the right slide rod and the right guide rod are parallel. There are two right limiting holes, which are respectively for the right sliding rod and the right guide rod to pass through. The right sliding rod and the right guide rod can only make lateral back-and-forth movements within the width range of the right limiting hole in the vertical direction.

4. A cross drive suitable for use with a needle plate of a flat knitting machine according to claim 3, characterized in that, It also includes a left guide rod and a left mounting block. The left slide rod and the left guide rod are both fixedly installed on the left mounting block and the three are relatively stationary. The axes of the left slide rod and the left guide rod are parallel. There are two left limiting holes, which are respectively for the left sliding rod and the left guide rod to pass through. The left sliding rod and the left guide rod can only move laterally back and forth with the needle plate within the vertical width range of the left limiting hole.

5. A cross drive suitable for use with a needle plate of a flat knitting machine according to claim 3 or 4, characterised in that, The connecting rod swing block has a swinging part and a first shaft hole that is fixedly connected to the output shaft. After installation, the swinging part of the connecting rod swings above the first shaft hole. The swinging part is rotatably connected to a first ball bearing, and the second ball bearing is connected to the bottom or near the bottom of the right mounting block.

6. A cross drive suitable for use with a needle plate of a flat knitting machine according to claim 5, characterized in that, It also includes a motor bracket, which has a second shaft hole. The output shaft of the motor passes through the second shaft hole and is then connected to and fixed to the connecting rod swing block. The motor bracket has limit posts on both sides of the connecting rod swing block. The horizontal height of the two limit posts is flush with or higher than the output shaft.

7. A weft knitting machine characterized in that, It includes at least one set of lateral drive devices for the needle plate of a flat knitting machine as described in any one of claims 1 to 6.

8. The weft knitting machine according to claim 7, characterized in that, It also includes a left needle seat and a right needle seat that vibrate in the vertical direction. The left and right needle seats are located at the same horizontal height and are symmetrically arranged. The left needle seat has the left limiting hole and the right needle seat has the right limiting hole. The bottom of the left and right needle seats is connected to a vibration driving device. The number of right limiting holes is equal to or greater than the number of groups of transverse driving devices, the number of left limiting holes is the same as the number of right limiting holes, and the left and right limiting holes are elongated holes.

9. The weft knitting machine according to claim 7 or 8, characterized in that, It also includes a left guide block and a right guide block, wherein the number of right guide blocks is the same as the number of groups of lateral drive devices, and the number of left guide blocks is the same as the number of right guide blocks; The needle plate is located between the opposite sides of the left and right needle seats. The opposite sides of the left and right needle seats are respectively provided with left and right slide rails adapted to the number and size of the left and right guide blocks. The sliding direction of the left and right slide rails is vertical. The left and right limit holes are respectively opened in the left and right slide rails. The left and right needle seats are also provided with left and right through holes corresponding to the number of left and right guide blocks. The left and right through holes are elongated holes. Both the left and right guide blocks are provided with at least two through holes and one fixing hole; The two through holes of the right guide block are respectively for the right slide rod and the right guide rod to pass through. A fastener passes through the right through pin hole and is fastened to the pin hole, thereby restricting the right guide block to slide only in the slide rail and only within the vertical width range of the right through pin hole. The two through holes are in a horizontal state.

10. The weft knitting machine according to claim 9, characterized in that, The device is equipped with four sets of the aforementioned transverse drive devices; the four motors are located on the same horizontal plane and are arranged in a V-shape with the vertical plane parallel to the needle plate as the plane of symmetry. The output shafts of the four symmetrically distributed motors are arranged opposite each other in pairs, and the connecting rods connecting the two motors far from the needle plate are longer than the connecting rods connecting the two motors close to the needle plate.

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