CN112941711A

CN112941711A - Two-sided computer positive and negative jacquard needle section of thick bamboo

Info

Publication number: CN112941711A
Application number: CN202110130636.8A
Authority: CN
Inventors: 郑庭贵
Original assignee: Quanzhou Dingfeng Knitting Machinery Co ltd
Current assignee: Quanzhou Dingfeng Knitting Machinery Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-06-11

Abstract

The invention discloses a needle cylinder of a double-sided computer front-back jacquard, which comprises a first circular ring and a plurality of fixing mechanisms uniformly and fixedly connected on the outer wall of the first circular ring, wherein each fixing mechanism comprises a fixing plate, a vertical plate and a push-pull mechanism, the fixing plate is fixedly connected at the top of the outer wall of the first circular ring, the vertical plate is arranged below the fixing plate in a sliding manner along the radial direction of the first circular ring, each push-pull mechanism comprises a push plate, a first compression spring and a driving and controlling assembly, the push plate is arranged below the fixing plate in a sliding manner, the push plate is positioned on one side, far away from the first circular ring, of the vertical plate, one end of each first compression spring is pressed on the push plate, the other end of each first compression spring is pressed on the vertical plate, and the. According to the invention, after the needle cylinder is worn, the vertical plate can still keep a state of pressing the external equipment by the elasticity of the first compression spring, the third compression spring and the extension spring, so that the needle cylinder is prevented from shaking.

Description

Two-sided computer positive and negative jacquard needle section of thick bamboo

Technical Field

The invention relates to the technical field of knitting cylinders, in particular to a needle cylinder of a double-sided computer front-back jacquard machine.

Background

Jacquard a textile tool by which fabrics with complex patterns can be woven. However, the needle cylinder of the existing double-sided computer front-back jacquard is easy to wear after long-time work, so that connection is unstable, needle leakage is caused, and the quality of finished products is influenced.

For this reason, published patent CN210826570U discloses a double-sided computer front and back jacquard needle cylinder, which comprises a first circular ring, four fixing mechanisms are fixedly connected to the outer wall of the first circular ring, four handles are fixedly connected to the outer sides of the fixing mechanisms, four round balls are fixedly connected to the inner wall of the first circular ring, and a second circular ring is fixedly connected to the inner sides of the round balls. This two-sided computer positive and negative jacquard needle cylinder has solved the problem that current two-sided computer positive and negative jacquard needle cylinder takes place wearing and tearing for a long time easily in work through the cooperation of fixed establishment and handle, it is unstable to have avoided connecting, prevented to take place to rock, the miss stitch has been avoided, off-the-shelf production has been guaranteed, the waste is avoided, the cost is reduced, and the problem that can't carry out the protection to internal plant when using has been solved through protection mechanism, the collision has been prevented, avoid equipment damage, the work efficiency has been guaranteed, the maintenance cost is reduced, the practicability is improved, and the promotion is convenient. However, when the needle cylinder is worn, the vertical plate can move to be clamped with the external equipment only by rotating the grip, the fixing effect of the fixing mechanism is poor, and the needle cylinder still easily shakes.

Disclosure of Invention

In view of the above, the present invention provides a needle cylinder of a double-sided computer front-back jacquard machine, so as to solve the above technical problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a two-sided computer positive and negative jacquard needle cylinder, includes first ring and even rigid coupling a plurality of fixed establishment on the outer wall of first ring, fixed establishment includes fixed plate, riser and push-and-pull institution, the fixed plate rigid coupling is in the top of the outer wall of first ring, the riser slides along the radial direction of first ring and sets up the below of fixed plate, push-and-pull institution includes push pedal, first compression spring and drives the accuse subassembly, the push pedal slides and sets up the below of fixed plate, just the push pedal is located one side of keeping away from of riser the first ring, the one end of first compression spring supports to press in the push pedal, the other end of first compression spring supports to press in the riser, it is used for regulating and controlling the position of push pedal to drive the accuse subassembly.

Further, the drive control assembly comprises a first rack and a first gear which are meshed with each other, the first gear is rotatably arranged on the fixing plate, and the first rack is connected with the push plate.

Furthermore, the drive control assembly further comprises a hook plate, a second rack, a second gear and a third gear, wherein the hook plate is arranged on the fixing plate in a sliding mode, the second rack is connected to the hook plate, the second gear and the third gear are coaxially arranged on the fixing plate, the second gear is meshed with the second rack, the third gear is meshed with the first gear, the diameter of the first gear is larger than that of the third gear, the diameter of the second gear is equal to that of the first gear, a hook head portion is arranged at one end of the hook plate, close to the first circular ring, and can be abutted to one side, close to the first circular ring, of the vertical plate.

Furthermore, the driving and controlling assembly further comprises a ratchet wheel, a ratchet and a hand wheel, the ratchet wheel is coaxially connected with the first gear, the ratchet is rotationally arranged on the fixing plate and matched with the ratchet, and the hand wheel is coaxially connected with the ratchet.

Furthermore, the driving and controlling assembly further comprises a limiting assembly, the limiting assembly comprises a top block, a connecting rod, a second compression spring, a first guide seat, a pulling plate and a limiting post, the first guide seat is fixed on the fixing plate, the connecting rod is slidably arranged on the first guide seat, one end of the connecting rod is connected with the top block, the other end of the connecting rod is connected with one side of the pulling plate, the second compression spring is sleeved on the connecting rod, one end of the second compression spring is pressed against the first guide seat, the other end of the second compression spring is pressed against the top block through a ratchet, a limiting rod part is arranged on the connecting plate, the limiting post is fixedly arranged on the fixing plate, when the top block is pressed against one side of the limiting rod part, the ratchet is matched with the ratchet, and when the ratchet top block is pressed against the other side of the limiting rod part, the limiting rod part is pressed on the limiting column, and the ratchet is separated from the ratchet wheel.

Further, it is a pair of still to drive accuse subassembly includes dog, a pair of second guide holder, string post and torsional spring, and is a pair of the second guide holder interval sets firmly on the fixed plate, the dog slides and sets up to be a pair of on the second guide holder, just the dog can keep out the opposite side of arm-tie, the bulge that the middle part of dog set up is restricted to be a pair between the second guide holder, it sets up to hang the post on the bulge, be provided with a projection on the fixed plate, the one end movable sleeve of torsional spring is established on the string post, the other end movable sleeve of torsional spring is established on the projection.

Further, be provided with first guide arm on the fixed plate, the push pedal with the upper portion of riser is all established on the first guide arm, a compression spring cover is established on the first guide arm, the lower part of push pedal with be provided with between the lower part of riser and assist and push away the subassembly, the riser lower part is close to be provided with the rubber pad on one side of first ring.

Further, assist and push away the subassembly and include push rod, second guide arm, slider and third compression spring, the one end pin joint of push rod is in keeping away from of riser on one side of first ring, the other end pin joint of push rod is in on the slider, the slider slip cap is established on the second guide arm, the vertical connection of second guide arm is in the lower extreme of push pedal, third compression spring cover is established on the second guide arm, just third compression spring is located the push pedal with between the slider.

Furthermore, the fixing mechanism further comprises an extension spring, a steering wheel, a pull rope, a winding drum and a fourth gear, wherein the steering wheel and the fourth gear are rotatably arranged on the fixing plate, the fourth gear is meshed with the second rack, the winding drum is coaxially connected with the fourth gear, the extension spring is located on one side, close to the first circular ring, of the vertical plate, one end of the extension spring is connected to the vertical plate, the other end of the extension spring is connected with one end of the pull rope, and the other end of the pull rope is wound on the winding drum after bypassing the steering wheel.

Furthermore, the fixing plate is provided with a sliding groove with a T-shaped section, and a T-shaped block part at the back side of the hook plate is arranged in the sliding groove in a sliding manner.

The technical scheme can show that the invention has the advantages that: when fixed establishment is in the stationary state, first compression spring, third compression spring and extension spring all are in the elastic deformation state, therefore when the cylinder back that wearing and tearing appear, first compression spring, third compression spring and extension spring's elasticity make the riser still can keep compressing tightly the state of external equipment, have avoided the cylinder to take place to rock, and fixed establishment's fixed effect is stable, reliable.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

Fig. 1 is a partial structural schematic diagram of the present invention.

Fig. 2 is a schematic view of another partial structure of the present invention.

Fig. 3 is an enlarged view of a point a in fig. 1.

Fig. 4 is an enlarged view of fig. 1 at B.

Fig. 5 is an enlarged view at C in fig. 2.

List of reference numerals: the device comprises a fixed plate 1, a first guide rod 11, a sliding groove 12, a convex column 13, a vertical plate 2, a rubber pad 21, a hook 22, a push-pull mechanism 3, a push plate 31, a first compression spring 32, a first rack 33, a first gear 34, a ratchet 35, a ratchet 351, a limit rod 3511, a hand wheel 352, a limit component 36, a top block 361, a connecting rod 362, a second compression spring 363, a first guide seat 364, a pull plate 365, a limit column 366, a stop 367, a convex part 3671, a second guide seat 3672, a hanging column 3673, a torsion spring 368, a hook plate 4, a second rack 41, a second gear 42, a third gear 43, a hook head 44, an auxiliary pushing component 5, a push rod 51, a second guide rod 52, a sliding block 53, a third compression spring 54, an extension spring 6, a steering wheel 61, a pull rope 62, a winding drum 63, a fourth gear 64, a first circular ring 7 and a rubber plate 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

Referring to fig. 1 to 5, as shown in fig. 1 and 2, a double-sided computer front and back jacquard needle cylinder includes a first circular ring 7 and a plurality of fixing mechanisms uniformly fixed on the outer wall of the first circular ring 7, each fixing mechanism includes a fixing plate 1, a vertical plate 2 and a push-pull mechanism 3, the fixing plate 1 is fixed on the top of the outer wall of the first circular ring 7, a first guide rod 11 extending along the radial direction of the first circular ring 7 is disposed on the upper portion of the fixing plate 1, the upper portion of the vertical plate 2 is sleeved on the first guide rod 11, the top of the vertical plate 2 is abutted against the fixing plate 1, a rubber pad 21 is disposed on the side of the lower portion of the vertical plate 2 close to the first circular ring 7, the push-pull mechanism 3 includes a push plate 31, a first compression spring 32 and a driving and controlling component, the upper portion of the push plate 31 is sleeved on the first guide rod 11, the top of the push plate 31 is abutted against the fixing plate 1, and the, the first compression spring 32 is sleeved on the first guide rod 11, one end of the first compression spring 32 is pressed against the push plate 31, the other end of the first compression spring 32 is pressed against the vertical plate 2, the driving and controlling assembly comprises a first rack 33, a first gear 34, a ratchet 35, a ratchet 351 and a hand wheel 352, the first gear 34 is rotatably arranged on the fixed plate 1, the first rack 33 is connected with the push plate 31, the first rack 33 is meshed with the first gear 34, the ratchet 35 is rotatably arranged on the back side of the fixed plate 1, the ratchet 35 is coaxially connected with the first gear 34, the ratchet 351 is rotatably arranged on the back side face of the fixed plate 1, the ratchet 351 is matched with the ratchet 35, and the hand wheel 352 is coaxially connected with the ratchet 35.

As shown in fig. 1, the driving and controlling assembly further includes a hook plate 4, a second rack 41, a second gear 42 and a third gear 43, a sliding slot 12 extending along the radial direction of the first ring 7 is provided on the fixing plate 1, the cross section of the sliding slot 12 is "T" shaped, a T-shaped block portion at the back side of the hook plate 4 is slidably disposed in the sliding slot 12, the second rack 41 is connected to the top of the hook plate 4, the second gear 42 and the third gear 43 are coaxially and rotatably disposed on the fixing plate 1, the second gear 42 is engaged with the second rack 41, the third gear 43 is engaged with the first gear 34, the diameter of the first gear 34 is larger than that of the third gear 43, the diameter of the second gear 42 is equal to that of the first gear 34, a hook portion 44 is provided at an end of the hook plate 4 close to the first ring 7, the hook portion 44 can abut against a side of the riser 2 close to the first ring 7, when an operator rotates the hand wheel, the moving speed of the hook plate 4 is greater than that of the push plate 31.

As shown in fig. 2 and 5, the driving and controlling assembly further includes a limiting assembly 36, the limiting assembly 36 includes a top block 361, a connecting rod 362, a second compression spring 363, a first guide seat 364, a pulling plate 365 and a limiting column 366, the first guide seat 364 is fixed on the back side surface of the fixing plate 1, the connecting rod 362 is horizontally slidably disposed on the first guide seat 364, one end of the connecting rod 362 is connected with the top block 361, the other end of the connecting rod 362 is connected with one side of the pulling plate 365, the second compression spring 363 is sleeved on the connecting rod 362, one end of the second compression spring 363 is pressed against the first guide seat 364, the other end of the second compression spring 363 is pressed against the top block 361, the top block 361 is in a semi-cylindrical shape, a limiting rod portion 3511 is disposed on the ratchet 351, the limiting column 366 is fixed on the fixing plate 1, when the arc surface of the top block 361 is pressed against one side of the limiting rod portion 3511, the ratchet 351 is matched with the ratchet 35, when the top block 361 is pressed against the other side of the, the limiting rod part 3511 is pressed against the limiting column 366, and the ratchet 351 is separated from the ratchet wheel 35.

As shown in fig. 1 and fig. 2, when fixing the syringe, first putting the first ring 7 into the external device, and making the bottom of the rubber plate 8 fixed on the periphery of the first ring 7 abut against the top of the external device, then rotating the hand wheel 352, the hand wheel 352 driving the ratchet wheel 35 and the first gear 34 to rotate, the first gear 34 driving the push plate 31 to move through the first rack 33, the push plate 31 pushing the vertical plate 2 to move through the first compression spring 32 until the rubber pad 21 on the lower part of the vertical plate 2 tightly abuts against the outer wall of the external device, because the ratchet wheel 35 and the ratchet 351 are mutually matched, the first gear 34 can only rotate in one direction, so the vertical plate 2 can keep the state of pressing the outer wall of the external device, in addition, because the first compression spring 32 is in the compression state at this time, after the syringe is worn, the elasticity of the first compression spring 32 can make the vertical plate 2 still keep the state of pressing the external device, the needle cylinder is prevented from shaking, and the occurrence of missed stitches is prevented; when the needle cylinder needs to be disassembled, an operator needs to overcome the elastic force of the second compression spring 363 to pull the pull plate 365 so that the top block 361 is far away from the limiting column 366, then the operator rotates the ratchet 351 to separate the ratchet 351 from the ratchet wheel 35, then the operator releases the pull plate 365, the top block 361 is reset under the elastic force of the second compression spring 363 and is pressed against the other side of the limiting rod part 3511, the limiting rod part 3511 is pressed against the limiting column 366, so that the ratchet 351 can be kept in a state of being separated from the ratchet wheel 35, then the operator rotates the hand wheel 352 in the reverse direction to enable the first gear 34 to rotate in the reverse direction, the first gear 34 drives the push plate 31 to move in the reverse direction through the first rack 33, meanwhile, the first gear 34 also drives the third gear 43 to rotate, the third gear 43 drives the hook plate 4 to move through the second gear 42 and the second rack 41, and the moving speed of the hook plate 4 is greater than that of, therefore, during the movement of the hook plate 4, the hook plate 4 will overcome the elastic force of the first compression spring 32 to drive the vertical plate 2 away from the external device.

As shown in fig. 5, in order to avoid the occurrence of the misoperation, the driving and controlling assembly further includes a stopper 367, a pair of second guide seats 3672, a hanging column 3673 and a torsion spring 368, the pair of second guide seats 3672 are fixedly arranged on the back side surface of the fixing plate 1 at intervals, the stopper 367 is vertically slidably arranged on the pair of second guide seats 3672, a protrusion 3671 arranged at the middle of the stopper 367 is limited between the pair of second guide seats 3672, the hanging column 3673 is arranged on the protrusion 3671, a convex column 13 is arranged on the back side surface of the fixing plate 1, one end of the torsion spring 368 is movably sleeved on the hanging column 3673, the other end of the torsion spring 368 is movably sleeved on the convex column 13, the torsion spring 368 is in an elastic deformation state, when the block 367 is at the lower position, the block 367 abuts against the other side of the pull plate 365, so that the moving range of the pull plate 365 is limited, when the stopper 367 is at the upper position, the stopper 367 releases the restriction of the pulling plate 365.

As shown in fig. 1 and 3, an auxiliary pushing assembly 5 is arranged between the lower portion of the pushing plate 31 and the lower portion of the riser 2, the auxiliary pushing assembly 5 includes a pushing rod 51, a second guide rod 52, a sliding block 53 and a third compression spring 54, one end of the pushing rod 51 is pivoted on one side of the riser 2 away from the first circular ring 7, the other end of the pushing rod 51 is pivoted on the sliding block 53, the sliding block 53 is slidably sleeved on the second guide rod 52, the second guide rod 52 is vertically connected to the lower end of the pushing plate 31, the third compression spring 54 is sleeved on the second guide rod 52, the third compression spring 54 is located between the pushing plate 31 and the sliding block 53, when the pushing plate 31 presses the riser 2 through the first compression spring 32, the third compression spring 54 is in a compressed state, and the elastic force of the third compression spring 54 acts on the lower portion of the riser 2 through the sliding block 53 and the second guide rod 52, so that the.

As shown in fig. 1 and 4, the fixing mechanism further includes an extension spring 6, a steering wheel 61, a pull rope 62, a winding drum 63 and a fourth gear 64, the steering wheel 61 and the fourth gear 64 are both rotatably disposed on the fixing plate 1, the fourth gear 64 is engaged with the second rack 41, the winding drum 63 and the fourth gear 64 are coaxially connected, the extension spring 6 is disposed on one side of the vertical plate 2 close to the first ring 7, one end of the extension spring 6 is connected to the hook 22 on the vertical plate 2, the other end of the extension spring 6 is connected to one end of the pull rope 62, the other end of the pull rope 62 is wound around the steering wheel 61 and then wound on the winding drum 63, when the second rack 41 moves in a direction close to the first ring 7, the second rack 41 drives the winding drum 63 to wind the pull rope 62 through the fourth gear 64, the pull rope 62 pulls the extension spring 6 to extend, and the elastic force of the extension spring 6 acts on the vertical plate 2, so that the vertical plate 2 can, Tightly pressed against the external equipment.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A needle cylinder of a double-sided computer front-back jacquard comprises a first circular ring (7) and a plurality of fixing mechanisms uniformly and fixedly connected to the outer wall of the first circular ring (7), and is characterized in that the fixing mechanisms comprise a fixing plate (1), a vertical plate (2) and a push-pull mechanism (3), the fixing plate (1) is fixedly connected to the top of the outer wall of the first circular ring (7), the vertical plate (2) is arranged below the fixing plate (1) in a sliding manner along the radial direction of the first circular ring (7), the push-pull mechanism (3) comprises a push plate (31), a first compression spring (32) and a driving and controlling component, the push plate (31) is arranged below the fixing plate (1) in a sliding manner, the push plate (31) is positioned on one side of the vertical plate (2) far away from the first circular ring (7), one end of the first compression spring (32) is pressed against the push plate (31), the other end of the first compression spring (32) is pressed on the vertical plate (2), and the driving and controlling assembly is used for regulating and controlling the position of the push plate (31).

2. A double-sided computer front-back jacquard needle cylinder according to claim 1, wherein said actuation assembly comprises a first rack (33) and a first gear (34) engaged with each other, said first gear (34) being rotatably arranged on said fixed plate (1), said first rack (33) being connected with said push plate (31).

3. A double-sided computer front-back jacquard needle cylinder according to claim 2, wherein said drive control assembly further comprises a hook plate (4), a second rack (41), a second gear (42) and a third gear (43), said hook plate (4) being slidably arranged on said fixed plate (1), said second rack (41) being connected to said hook plate (4), said second gear (42) and said third gear (43) being coaxially arranged on said fixed plate (1), said second gear (42) being in mesh with said second rack (41), said third gear (43) being in mesh with said first gear (34), said first gear (34) having a diameter greater than that of said third gear (43), said second gear (42) having a diameter equal to that of said first gear (34), a hook head (44) being arranged on an end of said hook plate (4) close to said first circular ring (7), the hook head (44) can be placed against the side of the riser (2) close to the first ring (7).

4. A double-sided computer front-back jacquard needle cylinder according to claim 3, wherein the drive control assembly further comprises a ratchet wheel (35), ratchet teeth (351) and a hand wheel (352), the ratchet wheel (35) is coaxially connected with the first gear (34), the ratchet teeth (351) are rotatably arranged on the fixing plate (1), the ratchet teeth (351) are matched with the ratchet wheel (35), and the hand wheel (352) is coaxially connected with the ratchet wheel (35).

5. A double-sided computer front-back jacquard needle cylinder according to claim 4, wherein the driving and controlling assembly further comprises a limiting assembly (36), the limiting assembly (36) comprises a top block (361), a connecting rod (362), a second compression spring (363), a first guide seat (364), a pulling plate (365) and a limiting column (366), the first guide seat (364) is fixed on the fixing plate (1), the connecting rod (362) is slidably arranged on the first guide seat (364), one end of the connecting rod (362) is connected with the top block (361), the other end of the connecting rod (362) is connected with one side of the pulling plate (365), the second compression spring (363) is sleeved on the connecting rod (362), one end of the second compression spring (363) is pressed against the first guide seat (364), and the other end of the second compression spring (363) is pressed against the top block (361), the ratchet (351) is provided with a limiting rod part (3511), the limiting column (366) is fixedly arranged on the fixing plate (1), when the ejector block (361) is pressed against one side of the limiting rod part (3511), the ratchet (351) is matched with the ratchet wheel (35), when the ejector block (361) is pressed against the other side of the limiting rod part (3511), the limiting rod part (3511) is pressed against the limiting column (366), and the ratchet (351) is separated from the ratchet wheel (35).

6. A double-sided computer front-back jacquard needle cylinder according to claim 5, the driving and controlling assembly further comprises a stop block (367), a pair of second guide seats (3672), a hanging column (3673) and a torsion spring (368), the pair of second guide seats (3672) are fixedly arranged on the fixing plate (1) at intervals, the block (367) is arranged on the pair of second guide seats (3672) in a sliding mode, and the block (367) can be resisted at the other side of the pulling plate (365), the convex part (3671) arranged at the middle part of the block (367) is limited between the pair of second guide seats (3672), the hanging column (3673) is arranged on the convex part (3671), the fixed plate (1) is provided with a convex column (13), one end of the torsion spring (368) is movably sleeved on the hanging column (3673), and the other end of the torsion spring (368) is movably sleeved on the convex column (13).

7. A double-sided computer front-back jacquard needle cylinder according to claim 4, wherein a first guide rod (11) is arranged on the fixing plate (1), the push plate (31) and the upper part of the vertical plate (2) are sleeved on the first guide rod (11), the first compression spring (32) is sleeved on the first guide rod (11), an auxiliary pushing assembly (5) is arranged between the lower part of the push plate (31) and the lower part of the vertical plate (2), and a rubber pad (21) is arranged on one side of the lower part of the vertical plate (2) close to the first circular ring (7).

8. A double-sided computer front-back jacquard needle cylinder according to claim 7, wherein the auxiliary pushing assembly (5) comprises a push rod (51), a second guide rod (52), a slide block (53) and a third compression spring (54), one end of the push rod (51) is pivoted on one side of the vertical plate (2) far away from the first circular ring (7), the other end of the push rod (51) is pivoted on the slide block (53), the slide block (53) is slidably sleeved on the second guide rod (52), the second guide rod (52) is vertically connected to the lower end of the push plate (31), the third compression spring (54) is sleeved on the second guide rod (52), and the third compression spring (54) is positioned between the push plate (31) and the slide block (53).

9. The double-sided computer front-back jacquard needle cylinder according to claim 8, the fixing mechanism also comprises an extension spring (6), a steering wheel (61), a pull rope (62), a winding drum (63) and a fourth gear (64), the steering wheel (61) and the fourth gear (64) are both rotationally arranged on the fixed plate (1), the fourth gear (64) is meshed with the second rack (41), the reel (63) and the fourth gear (64) are coaxially connected, the extension spring (6) is positioned on one side of the vertical plate (2) close to the first circular ring (7), one end of the extension spring (6) is connected to the vertical plate (2), the other end of the extension spring (6) is connected with one end of the pull rope (62), the other end of the pull rope (62) winds on the winding drum (63) after passing around the steering wheel (61).

10. A double-sided computer front-back jacquard needle cylinder according to claim 3, characterized in that a sliding groove (12) with a T-shaped section is arranged on the fixing plate (1), and a T-shaped block part at the back side of the hook plate (4) is arranged in the sliding groove (12) in a sliding manner.