A computerized knitting machine's down-draw device and method of use

Abstract

The application discloses a computerized flat knitting machine's pull-down device and a using method thereof, and belongs to the technical field of computerized flat knitting machines. The pull-down device comprises a support. A jacking assembly for jacking a single pulling rake is arranged at the lower end of the support. A pulling assembly for pulling a knitted fabric and a limiting assembly for limiting the opening and closing of the jacking assembly are arranged at the upper end of the support. The bottom of the support is fixedly connected with the inner bottom of a shell. The support, the jacking assembly, the pulling assembly and the limiting assembly are all arranged inside the shell. A plurality of pulling grooves are arranged at the upper end of the sidewall of the shell. Through the above mode, the movable end of the sliding assembly can be lifted and lowered by the top block end of the pushing wheel assembly, local pulling can be realized, the top block end of the pushing wheel assembly can be slid by the movable end of the driving assembly, pulling in a certain direction can be realized, the movable ends of a plurality of driving assemblies are arranged, the pulling of a plurality of areas can be realized, and more complex pulling actions can be facilitated.

Description

Technical Field

[0001] This invention relates to the field of computerized flat knitting machine technology, specifically to a pull-down device for a computerized flat knitting machine and its usage method. Background Technology

[0002] Computerized flat knitting machines, also known as flat knitting machines, are used for fabric weaving. During the manufacturing process, a pulling device is needed to pull the woven fabric. Currently, rollers or pulling rakes are commonly used for pulling. The pulling rake hooks the woven fabric with a hook and pulls it down. After completing one pulling action, the pulling hook retracts and returns to its original position for the next pulling action.

[0003] Chinese patent CN113026191B discloses a pulling mechanism for a horizontal knitting machine, which uses a motor to drive a rack to rise, thereby pushing the pulling rake to rise and fall, thus pulling the knitted fabric.

[0004] However, the aforementioned patents are not convenient for pulling specific parts of the woven fabric, and when it is necessary to gradually pull from a certain direction, multiple sets of drive devices are required for separate control, which is inconvenient to use.

[0005] Based on this, the present invention designs a pull-down device for a computerized flat knitting machine and its usage method to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a pull-down device for a computerized flat knitting machine and a method for using it.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A pull-down device for a computerized flat knitting machine, including a support frame;

[0009] The lower end of the bracket is equipped with a lifting assembly for lifting a single pulling rake, and the upper end of the bracket is equipped with a pulling assembly for pulling the woven fabric and a limiting assembly for restricting the opening and closing of the lifting assembly.

[0010] The bottom of the bracket is fixedly connected to the inner bottom of the outer shell. The bracket, lifting assembly, traction assembly and limiting assembly are all located inside the outer shell. Multiple sets of traction grooves are opened at the upper end of the side wall of the outer shell.

[0011] The lifting assembly includes a drive assembly and a pusher assembly; the drive assembly is installed at the lower end of the support, and the movable end of the drive assembly is connected to the pusher assembly; the top block end of the pusher assembly is connected to the traction assembly.

[0012] Furthermore, the drive assembly includes a lifting motor, a synchronous belt assembly, a lifting guide rail, a lifting slider, and lifting pulleys; at least one set of lifting motors is fixedly connected to the side wall of the bracket, and each lifting motor is connected to a set of synchronous belt assemblies; the pulleys at one end of the synchronous belt assembly are fixedly connected to the output end of the lifting motor, and the pulleys at the other end of the synchronous belt assembly are rotatably connected to the side wall of the bracket; the synchronous belt side wall of the synchronous belt assembly is fixedly connected to the side wall of the lifting slider; a lifting guide rail is fixedly connected to the lower end of the side wall of the bracket, and multiple sets of lifting pulleys are rotatably connected to the side wall of the lifting slider, with the lifting pulleys and the lifting guide rail in rolling connection; the lifting slider is connected to the push wheel assembly.

[0013] Furthermore, the pusher assembly includes a support rod, a pusher wheel, and a sloping bottom block; support rods are fixedly connected to the side walls of the lifting slider, and pusher wheels are connected to the top of the support rods. The upper end of the pusher wheel contacts the bottom of the sloping bottom block; the sloping bottom block is connected to the traction assembly.

[0014] Furthermore, the traction assembly includes a sliding assembly and a pressing assembly; multiple sets of sliding assemblies are installed on the upper side wall of the bracket, and the movable ends of the sliding assemblies are respectively connected to the pressing assemblies; the movable end of the pressing assembly is connected to the limiting assembly.

[0015] Furthermore, the sliding assembly includes a traction guide rail and a traction slider; the traction guide rail is fixedly connected to the upper end of the side wall of the bracket; the traction slider is slidably connected to the upper limit of the side wall of the traction guide rail; the lower end of the side wall of the traction slider is fixedly connected to the upper end of the side wall of the inclined bottom block; the traction slider is connected to the pressing assembly.

[0016] Furthermore, the pressing assembly includes ear plates, slide grooves, slide shafts, swing arms, springs, and pulling rake heads; multiple sets of ear plates are fixedly connected to the upper end of the side wall of the pulling slider, and each ear plate is provided with a slide groove; the side wall of the slide shaft and the slide groove are both limited and slidably connected, and the side wall of the slide shaft is rotatably connected to the side wall of the swing arm; the lower end of the swing arm is rotatably connected to the side wall of the pulling slider, and the upper end of the swing arm is fixedly connected to the lower end of the pulling rake head; the front and rear ends of the spring are respectively connected to the rear side wall of the swing arm and the front side wall of the pulling slider.

[0017] Furthermore, multiple sets of guide plates are installed on the upper side wall of the bracket, and one end of each set of sliding shafts is slidably connected to the side wall of one set of guide plates.

[0018] Furthermore, grooves for embedding springs are provided on the rear sidewall of the swing arm and the front sidewall of the traction slider, respectively. The front and rear ends of the springs are respectively in contact with the inner walls of the grooves on the rear sidewall of the swing arm and the front sidewall of the traction slider.

[0019] Furthermore, the limiting component includes a limiting motor, a drive shaft, and cams; the limiting motor is fixedly connected to the upper end of the side wall of the bracket; one end of the drive shaft is connected to the output end of the limiting motor via a synchronous belt, and the other end of the drive shaft is rotatably connected to the side wall of the bracket; multiple sets of cams are fixedly connected to the drive shaft, the number of cams is the same as the number of swing arms, and each set of cams is in contact with the side wall of a set of swing arms respectively.

[0020] Furthermore, multiple sets of drive shaft brackets are fixedly connected to the upper side wall of the bracket, and the side walls of the drive shaft brackets are rotatably connected to the side walls of the drive shaft.

[0021] To better achieve the objectives of this invention, the present invention also provides a method for using the pull-down device of a computerized flat knitting machine, comprising the following steps:

[0022] Step 1: When it is necessary to gradually pull the fabric in a certain direction, start the lifting motor of the lifting component drive assembly. The lifting motor pushes the lifting slider through the synchronous belt assembly. The lifting slider slides along the lifting guide rail through the lifting pulley. During the sliding process, the push wheel on the support rod of the push wheel assembly makes oblique contact with the bottom of the inclined bottom block and rolls along the inclined side to lift the inclined bottom block. This drives the pulling slider of the sliding component of the pulling assembly to slide upward along the pulling guide rail, thereby driving the swing arm of the pressing component to move upward. When the swing arm moves upward, the sliding shaft slides along the guide plate, the spring extends, and drives the swing arm to rotate, thereby driving the pulling rake head to extend out of the pulling groove to pull the woven fabric.

[0023] Step 2: The push wheel then continues to move away from the sloping bottom block. The sloping bottom block is driven by gravity to reset the swing arm. The swing arm pulls the fabric and, under the limit of the guide plate, drives the pulling rake head to retract into the outer shell. After pulling a certain distance, it separates from the woven fabric. At this time, the push wheel continues to lift another set of adjacent sloping bottom blocks and continues to pull the woven fabric.

[0024] Step 3: When it is necessary to retract the swing arm, the limit motor drives the transmission shaft to rotate, which in turn drives the cam to rotate, causing the cam to press the swing arm inward. Each set of swing arms retracts inward and drives the pulling rake head to retract into the pulling groove.

[0025] The present invention has the following technical effects:

[0026] 1. This invention can achieve partial material pulling by pushing the wheel to lift the inclined bottom block, and by driving the lifting slider to slide through the lifting motor, the inclined bottom block can be pushed and lowered one by one, which can achieve gradual material pulling in a certain direction. By setting multiple sets of lifting motors and lifting sliders, material pulling in multiple areas can be achieved separately, which is convenient for more complex material pulling operations.

[0027] 2. This invention uses a spring to push the swing arm, which allows the swing arm to extend the pulling rake head during its upward movement, thereby automatically pulling. The structure is simpler and easier to use.

[0028] 3. When the swing arm is retracted, the limit motor drives the transmission shaft to rotate, which in turn drives the cam to rotate, causing the cam to press the swing arm inward. Each set of swing arms retracts inward and drives the pulling rake head to retract into the pulling groove. When it is necessary to stop pulling, it quickly disengages from the woven fabric, reducing deviation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0030] Figure 1 This is a perspective view of a pull-down device for a computerized flat knitting machine according to the present invention;

[0031] Figure 2 This is a perspective view of the internal structure of the pull-down device of a computerized flat knitting machine according to the present invention;

[0032] Figure 3 This is a front view of the internal structure of the pull-down device of a computerized flat knitting machine according to the present invention;

[0033] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0034] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0035] Figure 6 For along Figure 3 A cross-sectional view along the CC direction;

[0036] Figure 7 This is a perspective view of the pull assembly of the pull-down device of a computerized flat knitting machine according to the present invention;

[0037] Figure 8 This is an exploded view of the pull assembly of the pull-down device of a computerized flat knitting machine according to the present invention.

[0038] The labels in the diagram represent:

[0039] 1. Bracket; 2. Lifting assembly; 21. Drive assembly; 211. Lifting motor; 212. Synchronous belt assembly; 213. Lifting guide rail; 214. Lifting slider; 215. Lifting pulley; 22. Push wheel assembly; 221. Support rod; 222. Push wheel; 223. Inclined bottom block; 3. Pulling assembly; 31. Sliding assembly; 311. Pulling guide rail; 312. Pulling slider; 32. Pressing assembly; 321. Ear plate; 322. Slide groove; 323. Slide shaft; 324. Swing arm; 325. Spring; 326. Pulling rake head; 327. Guide plate; 4. Limiting assembly; 41. Limiting motor; 42. Drive shaft; 43. Cam; 44. Drive shaft bracket; 5. Housing; 6. Pulling groove. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] The present invention will be further described below with reference to embodiments.

[0042] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0043] Example 1

[0044] Please refer to the instruction manual appendix. Figure 1-8 A pull-down device for a computerized flat knitting machine, comprising a support 1;

[0045] The lower end of the support 1 is equipped with a lifting component 2 for lifting a single pulling rake, and the upper end of the support 1 is equipped with a pulling component 3 for pulling the woven fabric and a limiting component 4 for limiting the opening and closing of the lifting component 2.

[0046] The bottom of the bracket 1 is fixedly connected to the inner bottom of the outer shell 5. The bracket 1, the lifting component 2, the pulling component 3 and the limiting component 4 are all located inside the outer shell 5. Multiple sets of pulling grooves 6 are opened at the upper end of the side wall of the outer shell 5.

[0047] The lifting assembly 2 includes a drive assembly 21 and a pusher assembly 22; the lower end of the support 1 is equipped with the drive assembly 21, and the movable end of the drive assembly 21 is connected to the pusher assembly 22; the top block end of the pusher assembly 22 is connected to the traction assembly 3.

[0048] The drive assembly 21 includes a lifting motor 211, a synchronous belt assembly 212, a lifting guide rail 213, a lifting slider 214, and lifting pulleys 215. At least one set of lifting motors 211 is fixedly connected to the side wall of the bracket 1, and each lifting motor 211 is connected to a set of synchronous belt assemblies 212. The pulleys at one end of the synchronous belt assembly 212 are fixedly connected to the output end of the lifting motor 211, and the pulleys at the other end of the synchronous belt assembly 212 are rotatably connected to the side wall of the bracket 1. The synchronous belt side wall of the synchronous belt assembly 212 is fixedly connected to the side wall of the lifting slider 214. A lifting guide rail 213 is fixedly connected to the lower end of the side wall of the bracket 1. Multiple sets of lifting pulleys 215 are rotatably connected to the side wall of the lifting slider 214, and the lifting pulleys 215 are rollingly connected to the lifting guide rail 213. The lifting slider 214 is connected to the push wheel assembly 22.

[0049] Preferably, there are three sets of lifting motors 211, two sets of lifting motors 211 are symmetrically installed on the left and right sides of the bracket 1, and the output end of the other set of lifting motors 211 is higher than the other two sets.

[0050] Preferably, each set of lifting sliders 214 is connected to four sets of lifting pulleys 215, and the four sets of lifting pulleys 215 are distributed in a rectangular array.

[0051] The pusher assembly 22 includes a support rod 221, a pusher wheel 222, and a sloping bottom block 223; the side walls of the lifting slider 214 are each fixedly connected to the support rod 221, the top of the support rod 221 is connected to the pusher wheel 222, and the upper end of the pusher wheel 222 is in contact with the bottom of the sloping bottom block 223; the sloping bottom block 223 is connected to the traction assembly 3.

[0052] Preferably, the push wheel 222 is rotatably connected to the top of the support rod 221.

[0053] Preferably, the bottom shape of the sloping bottom block 223 is an isosceles triangle.

[0054] When the present invention is in operation, if it is necessary to gradually pull the fabric in a certain direction, the lifting motor 211 of the drive assembly 21 of the lifting assembly 2 is activated. The lifting motor 211 pushes the lifting slider 214 through the synchronous belt assembly 212. The lifting slider 214 slides along the lifting guide rail 213 through the lifting pulley 215. During the sliding process, the push wheel 222 on the support rod 221 of the push wheel assembly 22 makes oblique contact with the bottom of the inclined bottom block 223 and rolls along the inclined side to lift the inclined bottom block 223, driving the pulling assembly 3 to rise and hooking the fabric after being lifted to the highest point. Then the push wheel 222 continues to... As the material continues to move away from the inclined bottom block 223, the inclined bottom block 223 is pulled down by gravity, causing the traction component 3 to fall. At this time, the push wheel 222 continues to lift another set of adjacent inclined bottom blocks 223, continuing to pull the woven fabric. By lifting the inclined bottom block 223 with the push wheel 222, partial material pulling can be achieved. Furthermore, by driving the lifting slider 214 to slide through the lifting motor 211, the inclined bottom blocks 223 can be pushed and lowered one by one, thus achieving gradual material pulling in one direction. By setting multiple sets of lifting motors 211 and lifting sliders 214, material pulling in multiple areas can be achieved separately, facilitating more complex material pulling actions.

[0055] Example 2

[0056] like Figure 1-8 As shown, in a preferred embodiment of the present invention, the traction component 3 includes a sliding component 31 and a pressing component 32; multiple sets of sliding components 31 are installed on the upper side wall of the bracket 1, and the movable ends of the sliding components 31 are respectively connected to the pressing components 32; the movable end of the pressing component 32 is connected to the limiting component 4.

[0057] Preferably, the sliding components 31 are evenly arranged in the horizontal direction.

[0058] The sliding component 31 includes a pull guide rail 311 and a pull slider 312; the pull guide rail 311 is fixedly connected to the upper end of the side wall of the bracket 1; the pull slider 312 is slidably connected to the upper limit of the side wall of the pull guide rail 311; the lower end of the side wall of the pull slider 312 is fixedly connected to the upper end of the side wall of the inclined bottom block 223; the pull slider 312 is connected to the pressing component 32.

[0059] The pressing assembly 32 includes ear plates 321, slide grooves 322, slide shafts 323, swing arms 324, springs 325, and pulling rake heads 326. Multiple sets of ear plates 321 are fixedly connected to the upper side wall of the pulling slider 312, and each ear plate 321 has a slide groove 322. The side wall of the slide shaft 323 is slidably connected to the slide groove 322, and the side wall of the slide shaft 323 is rotatably connected to the side wall of the swing arm 324. The lower end of the swing arm 324 is rotatably connected to the side wall of the pulling slider 312, and the upper end of the swing arm 324 is fixedly connected to the lower end of the pulling rake head 326. The front and rear ends of the spring 325 are respectively connected to the rear side wall of the swing arm 324 and the front side wall of the pulling slider 312.

[0060] Multiple sets of guide plates 327 are installed on the upper side wall of the bracket 1, and one end of each set of sliding shafts 323 is slidably connected to the side wall of one set of guide plates 327.

[0061] Preferably, the ear plates 321 are in two sets and are symmetrically distributed on both sides of the traction slider 312.

[0062] Preferably, the rear sidewall of the swing arm 324 and the front sidewall of the traction slider 312 are provided with grooves for embedding the spring 325, and the front and rear ends of the spring 325 are respectively in contact with the inner wall of the groove on the rear sidewall of the swing arm 324 and the front sidewall of the traction slider 312.

[0063] When the fabric needs to be gradually pulled in a certain direction during operation, the inclined bottom block 223 of the pusher assembly 22 of the lifting assembly 2 drives the pulling slider 312 of the sliding assembly 31 of the pulling assembly 3 to slide upward along the pulling guide rail 311, thereby driving the swing arm 324 of the pressing assembly 32 to move upward; when the swing arm 324 moves upward, the sliding shaft 323 slides along the guide plate 327, the spring 325 extends, driving the swing arm 324 to rotate, thereby driving the pulling rake head 326 from the pulling position. The puller extends from the groove 6 to pull the woven fabric; then the inclined bottom block 223 descends, driving the swing arm 324 to reset. The swing arm 324 pulls the fabric and, under the limit of the guide plate 327, drives the pulling rake head 326 to retract into the outer shell 5, separating from the woven fabric after pulling a certain distance; the swing arm 324 is pushed by the spring 325, so that the swing arm 324 can drive the pulling rake head 326 to extend during the upward movement, thereby automatically pulling. The structure is simpler and easier to use.

[0064] Example 3

[0065] like Figure 1-8 As shown, in a preferred embodiment of the present invention, the limiting component 4 includes a limiting motor 41, a transmission shaft 42, and cams 43; the limiting motor 41 is fixedly connected to the upper end of the side wall of the bracket 1; one end of the transmission shaft 42 is connected to the output end of the limiting motor 41 via a synchronous belt, and the other end of the transmission shaft 42 is rotatably connected to the side wall of the bracket 1; multiple sets of cams 43 are fixedly connected to the transmission shaft 42, the number of cams 43 is the same as the number of swing arms 324, and each set of cams 43 is located in front of a set of swing arms.

[0066] Preferably, the cams 43 are evenly arranged along the drive shaft 42.

[0067] Preferably, multiple sets of drive shaft brackets 44 are fixedly connected to the upper side wall of the bracket 1, and the side walls of the drive shaft brackets 44 are rotatably connected to the side wall of the drive shaft 42.

[0068] When the present invention is in operation, when it is necessary to retract the swing arm 324, the limit motor 41 drives the transmission shaft 42 to rotate, thereby driving the cam 43 to rotate, so that the cam 43 presses the swing arm 324 inward. Each set of swing arms 324 retracts inward and drives the pulling rake head 326 to retract into the pulling groove 6. When it is necessary to stop pulling, it quickly disengages from the woven fabric and reduces deviation.

[0069] Example 4

[0070] Please refer to the instruction manual appendix. Figure 1-8 A method for using the pull-down device of a computerized flat knitting machine includes the following steps:

[0071] Step 1: When it is necessary to gradually pull the fabric in a certain direction, start the lifting motor 211 of the drive component 21 of the lifting assembly 2. The lifting motor 211 pushes the lifting slider 214 through the synchronous belt assembly 212. The lifting slider 214 slides along the lifting guide rail 213 through the lifting pulley 215. During the sliding process, the push wheel 222 on the support rod 221 of the push wheel assembly 22 makes oblique contact with the bottom of the inclined bottom block 223 and rolls along the inclined side to lift the inclined bottom block 223. This drives the pulling slider 312 of the sliding component 31 of the pulling assembly 3 to slide upward along the pulling guide rail 311, thereby driving the swing arm 324 of the pressing assembly 32 to move upward. When the swing arm 324 moves upward, the sliding shaft 323 slides along the guide plate 327, the spring 325 extends, and the swing arm 324 rotates, thereby driving the pulling rake head 326 to extend out from the pulling groove 6 to pull the woven fabric.

[0072] Step 2: Then, the push wheel 222 continues to move away from the inclined bottom block 223. The inclined bottom block 223 is driven by gravity to reset the swing arm 324. The swing arm 324 pulls the fabric and, under the limit of the guide plate 327, drives the pulling rake head 326 to retract into the outer shell 5. After pulling a certain distance, it separates from the woven fabric. At this time, the push wheel 222 continues to lift another set of adjacent inclined bottom blocks 223 and continues to pull the woven fabric.

[0073] Step 3: When it is necessary to retract the swing arm 324, the limit motor 41 drives the transmission shaft 42 to rotate, thereby driving the cam 43 to rotate, so that the cam 43 presses the swing arm 324 inward, and each set of swing arms 324 retracts inward and drives the pulling rake head 326 to retract into the pulling groove 6.

[0074] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pull-down device for a computerized flat knitting machine, comprising a support (1), characterized in that: The lower end of the bracket (1) is equipped with a lifting assembly (2) for lifting a single pulling rake, and the upper end of the bracket (1) is equipped with a pulling assembly (3) for pulling the woven fabric and a limiting assembly (4) for limiting the opening and closing of the lifting assembly (2). The bottom of the bracket (1) is fixedly connected to the inner bottom of the outer shell (5). The bracket (1), lifting assembly (2), traction assembly (3) and limiting assembly (4) are all located inside the outer shell (5). Multiple sets of traction grooves (6) are opened at the upper end of the side wall of the outer shell (5). The lifting assembly (2) includes a drive assembly (21) and a pusher assembly (22); the drive assembly (21) is installed at the lower end of the bracket (1), and the movable end of the drive assembly (21) is connected to the pusher assembly (22); the top block end of the pusher assembly (22) is connected to the traction assembly (3); The drive assembly (21) includes a lifting motor (211), a synchronous belt assembly (212), a lifting guide rail (213), a lifting slider (214), and a lifting pulley (215); at least one set of lifting motors (211) is fixedly connected to the side wall of the bracket (1), and each lifting motor (211) is connected to a set of synchronous belt assemblies (212); the pulleys at one end of the synchronous belt assembly (212) are fixedly connected to the output end of the lifting motor (211), and the synchronous belt assembly (213) is fixedly connected to the output end of the lifting motor (214). 2) The pulleys at the other end are rotatably connected to the side wall of the bracket (1), and the side wall of the synchronous belt of the synchronous belt assembly (212) is fixedly connected to the side wall of the lifting slider (214); the lower end of the side wall of the bracket (1) is fixedly connected to the lifting guide rail (213), and multiple sets of lifting pulleys (215) are rotatably connected to the side wall of the lifting slider (214), and the lifting pulleys (215) and the lifting guide rail (213) are rollingly connected; the lifting slider (214) is connected to the push wheel assembly (22); The limiting component (4) includes a limiting motor (41), a transmission shaft (42), and a cam (43); the limiting motor (41) is fixedly connected to the upper side wall of the bracket (1); one end of the transmission shaft (42) is connected to the output end of the limiting motor (41) via a synchronous belt drive, and the other end of the transmission shaft (42) is rotatably connected to the side wall of the bracket (1); multiple sets of cams (43) are fixedly connected on the transmission shaft (42), the number of cams (43) is the same as the number of swing arms (324), and each set of cams (43) is respectively in contact with the side wall of a set of swing arms (324).

2. The pull-down device of the computerized flat knitting machine as described in claim 1, characterized in that, The pusher assembly (22) includes a support rod (221), a pusher wheel (222), and a sloping bottom block (223); the side walls of the lifting slider (214) are each fixedly connected to a support rod (221), the top of the support rod (221) is connected to the pusher wheel (222), and the upper end of the pusher wheel (222) is in contact with the bottom of the sloping bottom block (223); the sloping bottom block (223) is connected to the traction assembly (3).

3. The pull-down device of the computerized flat knitting machine as described in claim 2, characterized in that, The traction component (3) includes a sliding component (31) and a pressing component (32); multiple sets of sliding components (31) are installed on the upper side wall of the bracket (1), and the movable ends of the sliding components (31) are connected to the pressing components (32) respectively; the movable end of the pressing component (32) is connected to the limiting component (4).

4. The pull-down device of the computerized flat knitting machine as described in claim 3, characterized in that, The sliding assembly (31) includes a traction guide rail (311) and a traction slider (312); the traction guide rail (311) is fixedly connected to the upper end of the side wall of the bracket (1); the upper limit of the side wall of the traction guide rail (311) is slidably connected to the traction slider (312); the lower end of the side wall of the traction slider (312) is fixedly connected to the upper end of the side wall of the inclined bottom block (223); the traction slider (312) is connected to the pressing assembly (32).

5. The pull-down device of the computerized flat knitting machine as described in claim 4, characterized in that, The pressing assembly (32) includes an ear plate (321), a slide groove (322), a slide shaft (323), a swing arm (324), a spring (325), and a pulling rake head (326). Multiple sets of ear plates (321) are fixedly connected to the upper end of the side wall of the pulling slider (312), and each ear plate (321) is provided with a slide groove (322). The side wall of the slide shaft (323) is limited and slidably connected to the slide groove (322), and the side wall of the slide shaft (323) is rotatably connected to the side wall of the swing arm (324). The lower end of the swing arm (324) is rotatably connected to the side wall of the pulling slider (312), and the upper end of the swing arm (324) is fixedly connected to the lower end of the pulling rake head (326). The front and rear ends of the spring (325) are respectively connected to the rear side wall of the swing arm (324) and the front side wall of the pulling slider (312).

6. The pull-down device of the computerized flat knitting machine as described in claim 5, characterized in that, The bracket (1) has multiple sets of guide plates (327) installed on the upper side wall. One end of each set of sliding shafts (323) is slidably connected to the side wall of one set of guide plates (327).

7. The pull-down device of the computerized flat knitting machine as described in claim 6, characterized in that, The rear sidewall of the swing arm (324) and the front sidewall of the traction slider (312) are both provided with grooves for embedding springs (325). The front and rear ends of the springs (325) are respectively in contact with the inner walls of the grooves on the rear sidewall of the swing arm (324) and the front sidewall of the traction slider (312).

8. A method of using the pull-down device of a computerized flat knitting machine as described in claim 7, characterized in that, Includes the following steps: Step 1: When it is necessary to gradually pull the fabric in a certain direction, start the lifting motor (211) of the drive assembly (21) of the lifting assembly (2). The lifting motor (211) pushes the lifting slider (214) through the synchronous belt assembly (212). The lifting slider (214) slides along the lifting guide rail (213) through the lifting pulley (215). During the sliding process, the push wheel (222) on the support rod (221) of the push wheel assembly (22) makes oblique contact with the bottom of the inclined bottom block (223) and moves along the... The inclined side rolls up the inclined bottom block (223), which drives the sliding component (31) of the traction component (3) to slide the traction slider (312) upward along the traction guide rail (311), thereby driving the swing arm (324) of the pressing component (32) to move upward; when the swing arm (324) moves upward, the sliding shaft (323) slides along the guide plate (327), the spring (325) extends, driving the swing arm (324) to rotate, thereby driving the traction rake head (326) to extend out from the traction groove (6) to pull the woven fabric; Step 2: The push wheel (222) then continues to move away from the inclined bottom block (223). The inclined bottom block (223) is driven by gravity to reset the swing arm (324). The swing arm (324) pulls the fabric and, under the limit of the guide plate (327), drives the pulling rake head (326) to retract back into the outer shell (5). After pulling a certain distance, it separates from the woven fabric. At this time, the push wheel (222) continues to lift another set of adjacent inclined bottom blocks (223) and continues to pull the woven fabric. Step 3: When it is necessary to retract the swing arm (324), the limit motor (41) drives the transmission shaft (42) to rotate, thereby driving the cam (43) to rotate, so that the cam (43) presses the swing arm (324) inward. Each set of swing arms (324) retracts inward and drives the pulling rake head (326) to retract into the pulling groove (6).

Images