CN116770486A - Jacquard knife assembly transmission structure - Google Patents

Abstract

The invention discloses a jacquard knife component transmission structure, wherein the other end of a transmission rod is respectively connected with reciprocating rectilinear motion mechanisms at two sides of the inside of a frame, a fixed plate is fixedly connected to the reciprocating rectilinear motion mechanisms, the lower end of the fixed plate is fixedly connected with a straight rack, the straight rack is respectively meshed with a driving gear, right-angle bending plates are respectively fixedly connected to the inner walls of the frames at two sides of the driving gear, rotating shafts at two sides of the driving gear respectively penetrate through and are rotatably connected to the right-angle bending plates, and crank arms are fixedly connected to the rotating shafts of the driving gear between the right-angle bending plates and inner arms of the frames and are connected with needle lifting arms through linkage rods. The invention aims to provide a jacquard knife component transmission structure which is free from a large number of chains to drive, simple in structure, ingenious in design and stable in operation.

Description

Jacquard knife assembly transmission structure

Technical Field

The invention relates to the technical field of jacquard mechanical parts, in particular to a transmission structure of a jacquard lifting knife assembly.

Background

In the textile sector, fabrics are usually woven from warp and weft yarns. On a loom, warp threads are divided into an upper layer and a lower layer which are alternately changed according to a certain rule to form a channel for the weft threads to pass through, namely an opening, after the weft threads are led into the opening, the two layers of warp threads are alternately positioned up and down according to a fabric organization method to form a new opening, and the weaving process of the fabric is completed repeatedly. Warp formation of the warp openings is accomplished by a warp opening selection structure, which is the most central step in the textile technology.

Most of the existing electronic jacquard knife transmission mechanisms need to use a large number of chains for transmission, so that the structure is complex, the stability is poor during transmission, problems are easy to occur, and more troubles are brought to staff.

Therefore, it is necessary to provide a new knife driving mechanism of electronic jacquard machine to solve the above technical problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a jacquard knife assembly transmission structure which is free from a large number of chain drives, simple in structure, ingenious in design and stable in operation.

The technical scheme adopted by the invention for achieving the purpose is as follows: the utility model provides a jacquard knife subassembly transmission structure, includes two sets of frames of jacquard knife subassembly transmission structure installation usefulness, the lifting knife of every group frame lower extreme, frame lower extreme are used for lifting the lifting needle arm of lifting knife, a plurality of linking rods of connecting the lifting needle arm, the inboard drive gear who rotates the connection of frame, the crank arm that is located the drive gear both sides, the crank mechanism of through connection in the middle part of the frame and the reciprocal rectilinear motion mechanism of being connected with actuating mechanism transmission are located the crank mechanism of frame inboard is last to be connected with two sets of transfer lines respectively, the transfer line other end is connected with the reciprocal rectilinear motion mechanism of frame inside both sides respectively, fixedly connected with fixed plate on the reciprocal rectilinear motion mechanism, fixed plate lower extreme fixedly connected with straight rack, straight rack is connected with the drive gear meshing respectively, the frame inner wall of drive gear both sides is fixedly connected with right angle bent plate respectively, the pivot of drive gear both sides runs through respectively and rotates and is connected on right angle bent plate, all fixedly connected with crank arms in the pivot of the drive gear between right angle bent plate and the frame inner arm, the crank arm passes through the linking rod and the lifting needle arm and is connected with the reciprocal rectilinear motion mechanism of lifting knife mechanism of both sides in the frame inner arm respectively, fixed connection has the fixed fixture block through two lifting knife opposite ends respectively.

In one embodiment, the two sets of frames are divided into a left frame and a right frame, each set of frames further comprises a left mounting plate, a right mounting plate and an upper mounting plate, the right side edge of the lower end of the upper mounting plate is fixedly connected with the upper end of the right mounting plate, the left side edge of the lower end of the upper mounting plate is fixedly connected with the upper end of the left mounting plate, the upper mounting plates are respectively combined with the left mounting plate and the right mounting plate to form a U-shaped groove frame, and the transmission structure of the lifting knife assembly is relatively arranged in the U-shaped groove of the U-shaped groove frame.

In one embodiment, each time the initial rotation angle of the driving gear is 180 ° clockwise and counterclockwise, that is, the initial deflection angles of the crank arms on two sides of the driving gear are different by 180 °, and the crank arms on two sides of the driving gear are rotated 180 ° mirror symmetry with each other, that is, the crank arms on one side of the driving gear are rotated 180 ° by the rotation shaft of the driving gear and then are symmetrical on two sides of the driving gear.

In one embodiment, the two sets of reciprocating rectilinear motion mechanisms inside the frame are respectively and fixedly connected to the left mounting plate and the right mounting plate, the two sets of reciprocating rectilinear motion mechanisms inside the left frame are respectively distributed on the rear side of the left mounting plate and the front side of the right mounting plate, the two sets of reciprocating rectilinear motion mechanisms inside the right frame are respectively distributed on the front side of the left mounting plate and the rear side of the right mounting plate, the two sets of reciprocating rectilinear motion mechanisms inside the frame are horizontally and rotationally symmetrical, namely, the reciprocating rectilinear motion mechanisms are overlapped by turning 180 degrees with the vertical central axis between the left mounting plate and the right mounting plate in the same frame.

In one embodiment, two groups of needle lifting arms are arranged at the lower end of the frame, the needle lifting arms at the right side of the lower end of the left frame and the left side of the lower end of the right frame are inner needle lifting arms, the needle lifting arms at the left side of the lower end of the left frame and the right side of the lower end of the right frame are outer needle lifting arms, two groups of linkage rods adjacent to the left mounting plate at the inner side of the left frame and two groups of linkage rods adjacent to the right mounting plate at the inner side of the right frame are respectively connected with the outer needle lifting arms corresponding to the lower end of the frame, and two groups of linkage rods adjacent to the right mounting plate at the inner side of the left frame and the inner needle lifting arms corresponding to the lower end of the frame.

In one embodiment, initial states of two groups of crank arm ends adjacent to the left mounting plate on the inner side of the left frame and two groups of crank arm ends adjacent to the right mounting plate on the inner side of the right frame are respectively opposite, and initial states of two groups of crank arm ends adjacent to the right mounting plate on the inner side of the left frame and two groups of crank arm ends adjacent to the left mounting plate on the inner side of the right frame are respectively opposite.

In one embodiment, the inner needle lifting arm at the lower end of the left frame and the inner needle lifting arm at the lower end of the right frame lift two ends of the same lifting knife, and the outer needle lifting arm at the lower end of the left frame and the outer needle lifting arm at the lower end of the right frame lift two ends of the same lifting knife.

In one embodiment, the crank mechanism comprises an outer end shaft, an outer crank, an inner crank, a balancing weight, a connecting rod journal and an inner end shaft, wherein two ends of the inner end shaft penetrate into the frame respectively and then are fixedly connected with the inner crank, the balancing weight is arranged between the inner crank and the outer crank, the connecting rod journal is fixedly connected between two ends of the balancing weight and the inner crank and between two ends of the balancing weight and the outer crank respectively, the connecting rod journal is respectively and rotatably connected with a transmission rod, one end, away from the outer crank, of the outer crank is fixedly connected with the outer end shaft, and the other end of the outer end shaft penetrates out of the frame.

In one embodiment, the reciprocating linear motion mechanism comprises a chute body, a sliding guide block and a rotating block, wherein the chute body is fixedly connected to opposite side surfaces of the inner side of the frame respectively, a sliding guide groove is formed in the outer side surface of the chute body, the sliding guide block is connected in the sliding manner in the sliding guide groove, the rotating block is rotationally connected to the end surface of the outer side of the sliding guide block, one end of the transmission rod is fixedly connected with the rotating block, and the outer side surface of the lower end of the sliding guide block is fixedly connected with the fixing plate.

In one embodiment, the lifting knife fixing piece comprises a lifting rod, a lifting knife connecting part, a sliding sleeve piece, a clamping tongue, an upper spring, a lower spring and a bead pushing piece, wherein the lower end of the lifting needle arm 2 is respectively connected with a plurality of lifting rods in a rotating mode, the lower end of the lifting rod is provided with a movable groove, the upper end of the lifting knife connecting part is rotationally connected in the movable groove, an elongated hole is formed in the lifting knife connecting part, the sliding sleeve piece is connected to the lifting knife connecting part above the elongated hole in a sliding mode, a sliding groove hole is formed in the lifting knife connecting part opposite to the sliding sleeve piece, a sliding groove plate is connected in a sliding mode in the sliding groove hole, two ends of the sliding groove plate are respectively connected with the inner side bottom of the sliding groove hole in a penetrating mode, an upper spring is arranged in the sliding groove hole at the upper end of the sliding groove plate, the lower end of the upper spring is in a collision mode, clamping blocks matched with the square holes are fixedly connected to the two ends of the lifting knife connecting part in a penetrating mode, the two sides of the lower end of the sliding sleeve piece are respectively fixedly connected with the clamping tongue, the clamping tongue is connected to the sliding groove is arranged on the two sides of the sliding groove, the sliding groove is opposite to the bead pushing groove is arranged in the sliding groove, and the bead pushing piece is opposite to the bead pushing groove is connected to the bead pushing groove, and the bead pushing piece is opposite to the bead pushing groove is arranged in the positioning groove, and the bead pushing groove is opposite to the bead pushing groove respectively.

The invention has the beneficial effects that: the device drives the reciprocating linear motion mechanism to move relatively through the crank mechanism, the reciprocating linear motion mechanism drives the straight rack to move linearly in a matching way, the driving gear is driven to rotate in the opposite direction through the meshing action of the straight rack and the driving gear, the needle lifting arm is driven to move up and down through the linkage rod respectively, the whole device is not required to be driven by a large number of chains, and the device is simple in structure, ingenious in design and stable in operation.

Drawings

FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic view of the internal connection structure of the frame of the present invention;

FIG. 3 is a schematic view showing a detail of the portion A1 in FIG. 2;

FIG. 4 is a schematic view of a cross-sectional connecting structure of a cutter holder according to the present invention;

FIG. 5 is a schematic view showing a detail of the portion A2 in FIG. 4;

FIG. 6 is a schematic view of a driving gear connection structure according to the present invention;

FIG. 7 is a schematic view of a crank mechanism of the present invention with one end connected;

FIG. 8 is a schematic view of a reciprocating linear motion mechanism according to the present invention;

fig. 9 is a schematic view of the connecting structure of the crank arm of the present invention.

In the figure: 1 frame, 11 left frame, 12 right frame, 2 lifting knife, 3 lifting needle arm, 31 inner lifting needle arm, 32 outer lifting needle arm, 4 linkage rod, 5 driving gear, 6 crank arm, 7 fixed plate, 8 straight rack, 9 right angle bent plate, 10 driving rod, 101 left mounting plate, 102 right mounting plate, 103 upper mounting plate, 111 lifting knife fixed piece, 201 outer end shaft, 202 outer crank, 203 inner crank, 204 counterweight, 205 connecting rod journal, 206 inner end shaft, 301 sliding chute body, 302 sliding guide block, 303 rotating block, 304 sliding chute, 401 suspender, 402 lifting knife connecting part, 403 sliding sleeve piece, 404 clamping tongue, 405 upper spring, 406 lower spring, 407 bead ejection piece, 408 movable slot, 409 long hole, 410 sliding slot hole, 411 sliding slot plate, 412 clamping block, 413 clamping slot, 414 positioning slot, 415 bead ejection slot.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-9, a jacquard knife assembly transmission structure comprises two groups of frames 1 for mounting a knife 2 assembly transmission structure, a knife 2 at the lower end of each group of frames 1, a needle lifting arm 3 at the lower end of each frame 1 for lifting the knife 2, a plurality of linkage rods 4 connected with the needle lifting arm 3, driving gears 5 rotatably connected with the inner sides of the frames 1, crank arms 6 positioned at two sides of the driving gears 5, a crank mechanism penetrating through the middle part of the frames 1 and a reciprocating linear motion mechanism in transmission connection with a driving mechanism;

the concrete implementation content is that two groups of frames 1 are divided into a left frame 11 and a right frame 12, each group of frames 1 comprises a left mounting plate 101, a right mounting plate 102 and an upper mounting plate 103, the right side edge of the lower end of the upper mounting plate 103 is fixedly connected with the upper end of the right mounting plate 102, the left side edge of the lower end of the upper mounting plate 103 is fixedly connected with the upper end of the left mounting plate 101, the upper mounting plate 103 is respectively combined with the left mounting plate 101 and the right mounting plate 102 to form a U-shaped groove frame, and the transmission structure of the lifting knife 2 assembly is respectively arranged in the U-shaped groove of the U-shaped groove frame;

the crank mechanism comprises an outer end shaft 201, an outer crank 202, an inner crank 203, a counterweight 204, a connecting rod journal 205 and an inner end shaft 206, wherein the inner end shaft 206 is rotationally connected between the upper middle parts of the left frame 11 and the right frame 12, two ends of the inner end shaft 206 respectively penetrate into the left frame 11 and the right frame 12 and then are fixedly connected with the inner crank 203, the counterweight 204 is arranged between the inner crank 203 and the outer crank 202, two ends of the counterweight 204 respectively fixedly connected with the connecting rod journal 205 between the inner crank 203 and the outer crank 202, the connecting rod journal 205 is rotationally connected with a transmission rod 10 respectively, the other end of the transmission rod 10 is respectively connected with reciprocating linear motion mechanisms at two sides inside the frame 1, one end, away from the other end, of the outer crank 202 is fixedly connected with the outer end shaft 201, and the other end of the outer end shaft 201 penetrates out from the outer side of the frame 1;

the reciprocating linear motion mechanism comprises a chute body 301, a sliding guide block 302 and a rotating block 303, wherein the chute body 301 is fixedly connected to opposite side surfaces of the inner side of the rack 1, a sliding guide groove 304 is formed in the outer side surface of the chute body 301, the sliding guide block 302 is connected to the inner side of the sliding guide groove 304 in a sliding manner, the rotating block 303 is connected to the end surface of the outer side of the sliding guide block 302 in a rotating manner, one end of a transmission rod 10 is fixedly connected with the rotating block 303, during specific operation, the crank mechanism drives one end of the transmission rod 10 to do circular motion, the transmission rod 10 pulls the sliding guide block 302 to do reciprocating linear motion in the sliding groove, the outer side surface of the lower end of the sliding guide block 302 is fixedly connected with a fixed plate 7, the lower end of the fixed plate 7 is fixedly connected with a straight rack 8, the straight rack 8 is respectively meshed with a driving gear 5, during specific operation, the fixed plate 7 drives the straight rack 8 to do linear reciprocating motion, the driving gear 5 is driven by the straight rack 8 to rotate clockwise or anticlockwise, the initial rotation angle of 180 DEG, namely 180 DEG of a crank arm 6 on two sides of the driving gear 5, 180 DEG of the driving gear is respectively, 180 DEG of the crank arm is located on two sides of the driving gear 5, and 180 DEG of the crank arm are symmetrical to each driving gear 5 are rotated symmetrically, and the two sides of the driving gear 5 DEG are opposite to each other;

the inner walls of the machine frame 1 on two sides of the driving gear 5 are fixedly connected with right-angle bent plates 9 respectively, rotating shafts on two sides of the driving gear 5 penetrate through and rotate respectively to be connected to the right-angle bent plates 9, the rotating shafts of the driving gear 5 between the right-angle bent plates 9 and the inner arms of the machine frame 1 are fixedly connected with bent lever arms 6, the bent lever arms 6 are connected with the lifting needle arms 3 through the linkage rods 4, during specific operation, the straight racks 8 drive the driving gear 5 to rotate between two opposite right-angle bent plates 9, the driving gear 5 drives the bent lever arms 6 on two sides to rotate through the rotating shafts, one ends of the linkage rods 6 drive one ends of the linkage rods 4 to do circular motion, the lifting needle arms 3 are driven to move up and down through the linkage rods 4, the rotating rods at the lower ends of the lifting needle arms 3 are connected with lifting knife fixing pieces 111 at uniform intervals, and two ends of the lifting knife 2 are fixedly connected in corresponding lifting knife fixing pieces 111 through clamping blocks 412 respectively.

In one embodiment, the lifting knife fixing member 111 includes a suspension rod 401, a lifting knife connecting portion 402, a sliding sleeve member 403, a clamping tongue 404, an upper spring 405, a lower spring 406 and a top bead member 407, the lower ends of the lifting needle arms 32 are respectively and rotatably connected with a plurality of suspension rods 401, movable grooves 408 are arranged at the lower ends of the suspension rods 401, the upper ends of the lifting knife connecting portion 402 are rotatably connected in the movable grooves 408, a long hole 409 is arranged on the lifting knife connecting portion 402, a sliding sleeve member 403 is connected on the sliding knife connecting portion 402 above the long hole 409 in a sliding manner, a sliding slot hole 410 is arranged on the lifting knife connecting portion 402 opposite to the sliding sleeve member 403, a sliding slot plate 411 is connected in a sliding manner in a sliding way, two ends of the sliding slot plate 411 respectively penetrate through the sliding slot hole 410 and then are fixedly connected with the inner side bottoms of the sliding sleeve member 403, an upper spring 405 is arranged in the sliding slot hole 410 at the upper ends of the sliding slot plate 411, the lower ends of the upper spring 405 are in a abutting manner with the sliding slot plate 411, two ends of the lifting knife 2 are fixedly connected with clamping blocks 412 matched with the square holes, the clamping blocks 412 are connected in the square holes in a penetrating way, clamping tongues 404 are fixedly connected to two sides of the lower end of the sliding sleeve member 403 respectively, chamfer faces are arranged at the lower ends of the clamping tongues 404 respectively, the chamfer faces are opposite to the plugging directions of the clamping blocks 412, clamping grooves 413 are respectively formed in the clamping blocks 412 opposite to the lower ends of the clamping tongues 404, the clamping tongues 404 are respectively connected in the clamping grooves 413 in a jogged way, positioning grooves 414 are formed at the lower ends of the long holes 409, lower springs 406 are arranged in the positioning grooves 414, bead jacking members 407 are movably connected at the notch of the positioning grooves 414, the lower ends of the bead jacking members 407 are in abutting connection with the lower springs 406, bead jacking grooves 415 are formed in the clamping blocks 412 opposite to the upper ends of the bead jacking members 407, the clamping blocks 412 at the two ends of the lifting knife 2 are respectively plugged in the long holes 409 when in use, the edges of the upper ends of the clamping blocks 412 are firstly abutted to the chamfer faces of the lower ends of the clamping tongues 404 in the plugging process, under the action of lateral force, the clamping block 412 drives the clamping tongue 404 to move upwards, meanwhile, the clamping tongue 404 drives the sliding sleeve 403 to slide upwards along the lifting knife connecting part 402, meanwhile, the sliding sleeve 403 drives the sliding groove plate 411 to slide upwards along the sliding groove hole 410, the upper spring 405 is compressed through the sliding groove plate 411, when the clamping tongue 404 is opposite to the clamping groove 413, the upper spring 405 pushes the sliding groove plate 411 to move downwards, the sliding groove plate 411 drives the sliding sleeve 403 and the clamping tongue 404 to move downwards, when the clamping tongue 404 and the clamping groove 413 are embedded, and accordingly, the clamping block 412 is relatively fixed, in the process of inserting the clamping block 412 into the long hole 409, the clamping block 412 firstly presses the bead jacking piece 407 downwards back to the positioning groove 414, meanwhile, the lower spring 406 in the positioning groove 414 is compressed, when the upper end of the bead jacking piece 407 is opposite to the bead jacking groove 415, the lower spring 406 pushes the bead jacking piece 407 to move upwards, the ball structure at the upper end of the bead jacking piece 407 is embedded in the bead jacking groove 415, and the positioning of the position of the clamping block 412 is inserted into the long hole 409.

In one embodiment, two sets of reciprocating rectilinear motion mechanisms inside the frame 1 are respectively and fixedly connected to the left mounting plate 101 and the right mounting plate 102, two sets of reciprocating rectilinear motion mechanisms inside the left frame 11 are respectively distributed on the rear side of the left mounting plate 101 and the front side of the right mounting plate 102, two sets of reciprocating rectilinear motion mechanisms inside the right frame 12 are respectively distributed on the front side of the left mounting plate 101 and the rear side of the right mounting plate 102, and two sets of reciprocating rectilinear motion mechanisms inside the frame 1 are horizontally and rotationally symmetrical; the lower end of the frame 1 is provided with two groups of needle lifting arms 3, the needle lifting arms 3 on the right side of the lower end of the left frame 11 and the left side of the lower end of the right frame 12 are inner needle lifting arms 31, the needle lifting arms 3 on the left side of the lower end of the left frame 11 and the right side of the lower end of the right frame 12 are outer needle lifting arms 32, two groups of linkage rods 4 adjacent to the left mounting plate 101 on the inner side of the left frame 11 and two groups of linkage rods 4 adjacent to the right mounting plate 102 on the inner side of the right frame 12 are respectively connected with the outer needle lifting arms 32 corresponding to the lower end of the frame 1, and two groups of linkage rods 4 adjacent to the right mounting plate 102 on the inner side of the left frame 11 and two groups of linkage rods 4 adjacent to the left mounting plate 101 on the inner side of the right frame 12 are respectively connected with the inner needle lifting arms 31 corresponding to the lower end of the frame 1; the initial states of the two groups of the bent lever arm 6 ends adjacent to the left mounting plate 101 on the inner side of the left frame 11 and the two groups of the bent lever arm 6 ends adjacent to the right mounting plate 102 on the inner side of the right frame 12 are respectively opposite, and the initial states of the two groups of the bent lever arm 6 ends adjacent to the right mounting plate 102 on the inner side of the left frame 11 and the two groups of the bent lever arm 6 ends adjacent to the left mounting plate 101 on the inner side of the right frame 12 are respectively separated; when the inner needle lifting arm 31 at the lower end of the left frame 11 and the inner needle lifting arm 31 at the lower end of the right frame 12 lift the two ends of the same lifting knife 2, the outer needle lifting arm 32 at the lower end of the left frame 11 and the outer needle lifting arm 32 at the lower end of the right frame 12 lift the two ends of the same lifting knife 2, namely, in the same frame 1, the reciprocating linear motion mechanism turns 180 degrees to coincide with the vertical central axis between the left mounting plate 101 and the right mounting plate 102, during the use, in the same frame 1, one end of the transmission rod 10 connected with the rotating block 303 moves in opposite directions or in opposite directions in the rotating process of the crank mechanism, and simultaneously drives the fixed plate 7 and the straight racks 8 to move in opposite directions or in opposite directions, at the moment, the two groups of straight racks 8 drive the two groups of driving gears 5 to rotate in opposite directions all the time through meshing, so that the ends of the same-side crank arms 6 in the frame 1 keep the same height, and the connecting rod drives the identical inner needle lifting arm 31 or the outer needle lifting arm 32 to move up and down together.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The utility model provides a jacquard knife subassembly transmission structure, including two sets of frames (1) of jacquard knife (2) subassembly transmission structure installation usefulness, carry knife (2) of every frame (1) lower extreme, frame (1) lower extreme is used for mentioning carry needle arm (3) of knife (2), link (4) of a plurality of connection carry needle arm (3), the inboard driving gear (5) that rotate and connect of frame (1), crank arm (6) that are located driving gear (5) both sides, through connection at the crank mechanism at frame (1) middle part, and the reciprocal rectilinear motion mechanism who is connected with actuating mechanism transmission, its characterized in that: the lifting device is characterized in that two groups of transmission rods (10) are respectively connected to a crank mechanism on the inner side of the frame (1) in a transmission manner, the other ends of the transmission rods (10) are respectively connected with reciprocating rectilinear motion mechanisms on the two sides of the inner side of the frame (1), a fixed plate (7) is fixedly connected to the reciprocating rectilinear motion mechanisms, a straight rack (8) is fixedly connected to the lower end of the fixed plate (7), the straight rack (8) is respectively connected with a driving gear (5) in a meshed manner, right-angle bending plates (9) are respectively fixedly connected to the inner walls of the frame (1) on the two sides of the driving gear (5), rotary shafts on the two sides of the driving gear (5) respectively penetrate through and are connected to the right-angle bending plates (9), a bent lever arm (6) is fixedly connected to the rotary shafts of the driving gear (5) between the right-angle bending plates (9) and the inner arms of the frame (1), the bent lever arm (6) is connected with a lifting needle arm (3) through a linkage rod (4), a plurality of evenly-spaced lifting fixing pieces (111) are connected to the lifting needle arm (3), and the lifting ends (2) are respectively connected to the corresponding lifting pieces (111) in a fixed manner.

2. The jacquard knife assembly transmission structure of claim 1, wherein: two sets of frame (1) divide into left frame (11) and right frame (12), every group frame (1) again include left mounting panel (101), right mounting panel (102), go up mounting panel (103) lower extreme right side edge with right mounting panel (102) upper end fixed connection, go up mounting panel (103) lower extreme left side edge then with left mounting panel (101) upper end fixed connection, go up mounting panel (103) respectively with left mounting panel (101) and right mounting panel (102) combination formation U type cell frame, cutter (2) subassembly transmission structure is all installed in the U type inslot portion of U type cell frame.

3. The jacquard knife assembly transmission structure of claim 1, wherein: the initial rotation angle of the driving gear (5) is 180 degrees clockwise and anticlockwise each time, namely the initial deflection angles of the crank arms (6) positioned at two sides of the driving gear (5) are 180 degrees different, and the crank arms (6) positioned at two sides of the driving gear (5) are in mirror symmetry with each other in rotation by 180 degrees.

4. The jacquard knife assembly transmission structure of claim 1, wherein: two groups of reciprocating rectilinear motion mechanisms on the inner side of the frame (1) are respectively and fixedly connected to the left mounting plate (101) and the right mounting plate (102), the two groups of reciprocating rectilinear motion mechanisms in the left frame (11) are respectively distributed on the rear side of the left mounting plate (101) and the front side of the right mounting plate (102), the two groups of reciprocating rectilinear motion mechanisms in the right frame (12) are respectively distributed on the front side of the left mounting plate (101) and the rear side of the right mounting plate (102), and the two groups of reciprocating rectilinear motion mechanisms in the frame (1) are horizontally and rotationally symmetrical.

5. The jacquard knife assembly transmission structure of claim 1, wherein: the needle lifting device is characterized in that two groups of needle lifting arms (3) are arranged at the lower end of the frame (1), the right side of the lower end of the left frame (11) and the left side of the lower end of the right frame (12) are respectively inner needle lifting arms (31), the left side of the lower end of the left frame (11) and the right side of the lower end of the right frame (12) are respectively outer needle lifting arms (32), two groups of linkage rods (4) adjacent to the left mounting plate (101) at the inner side of the left frame (11) and two groups of linkage rods (4) adjacent to the right mounting plate (102) at the inner side of the right frame (12) are respectively connected with the outer needle lifting arms (32) corresponding to the lower end of the frame (1), and two groups of linkage rods (4) adjacent to the right mounting plate (102) at the inner side of the left frame (11) and the inner side of the right frame (12) are respectively connected with the inner needle lifting arms (31) corresponding to the lower end of the frame (1).

6. The jacquard knife assembly transmission structure of claim 1, wherein: the initial states of the two groups of bent lever arm (6) ends adjacent to the left mounting plate (101) on the inner side of the left frame (11) and the two groups of bent lever arm (6) ends adjacent to the right mounting plate (102) on the inner side of the right frame (12) are respectively opposite, and the initial states of the two groups of bent lever arm (6) ends adjacent to the right mounting plate (102) on the inner side of the left frame (11) and the two groups of bent lever arm (6) ends adjacent to the left mounting plate (101) on the inner side of the right frame (12) are respectively set separately.

7. The jacquard knife assembly transmission structure of claim 1, wherein: the inner needle lifting arm (31) at the lower end of the left frame (11) and the inner needle lifting arm (31) at the lower end of the right frame (12) lift two ends of the same lifting knife (2), and the outer needle lifting arm (32) at the lower end of the left frame (11) and the outer needle lifting arm (32) at the lower end of the right frame (12) lift two ends of the same lifting knife (2).

8. The jacquard knife assembly transmission structure of claim 1, wherein: the crank mechanism comprises an outer end shaft (201), an outer crank (202), an inner crank (203), a balancing weight (204), a connecting rod journal (205) and an inner end shaft (206), wherein two ends of the inner end shaft (206) penetrate into a rack (1) respectively and then are fixedly connected with the inner crank (203), the balancing weight (204) is arranged between the inner crank (203) and the outer crank (202), connecting rod journals (205) are fixedly connected between two ends of the balancing weight (204) and the inner crank (203) and the outer crank (202) respectively, a transmission rod (10) is respectively connected to the connecting rod journals (205) in a rotating mode, one end, away from the outer end, of the outer crank (202) is fixedly connected with the outer end shaft (201), and the other end of the outer end shaft (201) penetrates out from the outer side of the rack (1).

9. The jacquard knife assembly transmission structure of claim 1, wherein: the reciprocating linear motion mechanism comprises a chute body (301), a sliding guide block (302) and a rotating block (303), wherein the chute body (301) is fixedly connected to opposite side surfaces of the inner side of the frame (1), a sliding guide groove (304) is formed in the outer side surface of the chute body (301), the sliding guide block (302) is connected in a sliding mode in the sliding guide groove (304), the rotating block (303) is rotationally connected to the end surface of the outer side of the sliding guide block (302), one end of the transmission rod (10) is fixedly connected with the rotating block (303), and the outer side surface of the lower end of the sliding guide block (302) is fixedly connected with the fixing plate (7).

10. The jacquard knife assembly transmission structure of claim 1, wherein: the lifting knife fixing piece (111) comprises a lifting rod (401), a lifting knife connecting part (402), a sliding sleeve piece (403), a clamping tongue (404), an upper spring (405), a lower spring (406) and a top bead piece (407), wherein the lower ends of the lifting needle arms (3) are respectively connected with a plurality of lifting rods (401) in a rotating mode, movable grooves (408) are formed in the lower ends of the lifting rod (401), the upper ends of the lifting knife connecting part (402) are rotatably connected in the movable grooves (408), long holes (409) are formed in the lifting knife connecting part (402), sliding sleeves (403) are connected on the lifting knife connecting part (402) above the long holes (409), sliding slotted holes (410) are formed in the lifting knife connecting part (402) opposite to the sliding sleeve piece (403), sliding slotted plates (411) are connected in a sliding mode, two ends of each sliding slotted plate (411) are fixedly connected with the inner bottoms of the sliding sleeve piece (403) after penetrating out of the sliding slotted holes (410), sliding slots (410) are formed in the sliding slots (412), the sliding slots (405) are formed in the sliding slots (410), the sliding slots (410) are fixedly connected with the upper ends of the sliding plates (405), and the sliding blocks (405) are connected with the two ends of the sliding blocks, and the sliding blocks (405) fixedly connected with the upper ends of the sliding blocks, clamping tongues (404) are fixedly connected to two sides of the lower end of the sliding sleeve piece (403), clamping grooves (413) are formed in clamping blocks (412) opposite to the lower ends of the clamping tongues (404), the clamping tongues (404) are respectively connected in the clamping grooves (413) in a jogged mode, positioning grooves (414) are formed in the lower ends of the long holes (409), lower springs (406) are arranged in the positioning grooves (414), top bead pieces (407) are movably connected to the notch of the positioning grooves (414), the lower ends of the top bead pieces (407) are in abutting connection with the lower springs (406), top bead grooves (415) are formed in clamping blocks (412) opposite to the upper ends of the top bead pieces (407), and the upper ends of the top bead pieces (407) are in abutting connection with the top bead grooves (415).