CN218596639U

CN218596639U - Crochet machine

Info

Publication number: CN218596639U
Application number: CN202223080231.7U
Authority: CN
Inventors: 姚必雷
Original assignee: Zhejiang Kangjia Machinery Co ltd
Current assignee: Zhejiang Kangjia Machinery Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-10
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to a crochet machine, including frame, needle bed, faller A and faller B to and main shaft and driving motor, driving motor can drive the main shaft and rotate, has the needle tubing on the needle bed, the needle bed can reach the side-to-side motion from top to bottom, still is equipped with the lift group that can drive the needle bed up-and-down motion in the frame and drives the sliding group A of needle bed side-to-side motion, the both ends of needle bed are supported through the lift group of frame both sides respectively, and every lift group of group all includes: the needle bed seat is used for supporting a needle bed, and the driving arm and the connecting arm are connected with the needle bed seat and the connecting arm respectively at two ends of the driving arm, the connecting arm can drive the needle bed seat to move up and down through the driving arm hinged with the connecting arm, and the connecting arms in the lifting groups at two sides of the rack are driven by the connecting roller; the sliding group A is arranged on one side of the frame and comprises a transmission shaft, a connecting rod, a weft needle swing arm, a linkage shaft and an eccentric transmission mechanism. The needle bed can move up and down, left and right, the needle plate B can move to realize winding, and the knitting style is multiple.

Description

Crochet machine

Technical Field

The utility model relates to a crochet machine.

Background

A warp knitting machine in which a needle bed and a guide bar are arranged horizontally and a weft insertion guide bar is arranged vertically above the needle bed. Is a modified narrow raschel machine. The warp yarns fed by the guide bar are woven into loops by using a latch needle or a self-closing crochet needle, and the weft insertion yarns are fed by the weft insertion guide bar and clamped in the loops of the ground texture. It is commonly used for producing narrow-width warp knitted fabrics such as lace strips, elastic bands and the like.

In CN203795099U, a transmission device of a knitting crochet machine is disclosed, which comprises: the fixed seat is provided with at least one machine base; a transmission shaft which is pivoted on the base of the fixed seat; the needle-out transmission set is arranged on the machine base and comprises a needle-out eccentric wheel rocker arm and a needle-clamping bed combination table board, one end of the needle-out eccentric wheel rocker arm is pivoted on the transmission shaft, and the needle-out transmission set is used for driving the needle-clamping bed combination table board to horizontally reciprocate; at least two high-low transmission sets are arranged on the machine base, and each high-low transmission set comprises: one end of the high-low eccentric wheel rocker is pivoted on the transmission shaft; the lifting linkage piece is arranged in the long hole of the machine base, and a combining part is arranged on one surface of the lifting linkage piece facing the needle clamping bed combining table board; the high-low connecting rod set is pivoted at one end of the high-low eccentric wheel rocker arm, which is different from the transmission shaft, and is used for linking the lifting linkage piece to move linearly up and down along the long hole of the machine base; the movable needle clamping bed group is arranged between the needle clamping bed combination table boards of the needle outlet transmission group; and a high and low needle bed group which is arranged between the two joint parts. The needle bed group in the crochet machine can only do lifting motion and can not do left and right reciprocating motion, the knitting style is less, and the knitting function is single.

Disclosure of Invention

The purpose of the utility model is that: in order to overcome the defects of the prior art, the utility model provides a crochet machine, the needle bed can reach the side-to-side movement from top to bottom to still have the pendulum winding and drive faller B motion, can realize the wire winding, weave the pattern many.

The technical scheme of the utility model: a crochet machine comprises a frame, a needle bed, a needle plate A, a needle plate B, a main shaft and a driving motor, wherein the driving motor can drive the main shaft to rotate,

the needle bed is provided with a needle tube, the needle bed can move up and down and left and right, the frame is also provided with a lifting group which can drive the needle bed to move up and down and a sliding group A which can drive the needle bed to move left and right,

the two ends of the needle bed are respectively supported by the lifting groups on the two sides of the rack, and each lifting group comprises: the needle bed seat is used for supporting a needle bed, and the driving arm and the connecting arm are connected with the needle bed seat and the connecting arm respectively at two ends of the driving arm, the connecting arm can drive the needle bed seat to move up and down through the driving arm hinged with the connecting arm, and the connecting arms in the lifting groups at two sides of the rack are driven by the connecting roller;

the sliding group A is arranged on one side of the rack and comprises a transmission shaft, a connecting rod, a weft needle swing arm, a linkage shaft and an eccentric transmission mechanism, the transmission shaft and the linkage shaft realize transmission through a belt pulley group A, the eccentric transmission mechanism is arranged on the linkage shaft, the eccentric transmission mechanism and the weft needle swing arm are transmitted through the linkage arm, a movable rod A is arranged in the needle bed seat in a penetrating manner, the needle bed is connected to one end of the movable rod A, the other end of the movable rod A is also hinged with the connecting rod, the weft needle swing arm can drive the movable rod A to slide left and right in the needle bed seat through the transmission of the connecting rod, one end of the main shaft is in transmission connection with the connecting roller through the linkage structure, and the other end of the main shaft realizes transmission through a bevel gear structure with the transmission shaft;

the latch needle has on the faller A, but faller A seesaw, still be equipped with the group B that slides that can drive faller A seesaw in the frame, slide group B and have: the swing rod capable of pulling the needle plate A to slide back and forth and the pull rod driving the swing rod to rotate are arranged, one end of the pull rod is rotatably connected with the swing rod, and the other end of the pull rod is sleeved on the main shaft through the transmission sleeve;

the faller B is provided with a crochet hook, the faller B is movably arranged on the frame and drives the crochet hook on the faller B to move around the latch needle on the faller A, the frame is also provided with a pendulum winding which can drive the faller B to move, and the pendulum winding is provided with: the needle plate B is connected with the transmission arm;

the end part of the needle plate B is provided with a movable rod B, the upper end of the transmission arm is provided with a hole for the movable rod B to be clamped in, the movable rod B is arranged in the hole and can respectively abut against the two ends of the transmission arm through two shaft blocks arranged on the movable rod B.

Compare traditional crochet machine the utility model discloses an useful part lies in:

the lifting group can drive the needle bed to move up and down through the same main shaft, and the sliding group A drives the needle bed to move left and right; the sliding group B can drive the needle plate A to move back and forth, and the swing winding can drive the latch needle on the hook needle plate A of the needle plate B to wind. A driving motor, main shaft drive simple structure can realize that the multiunit faller realizes different actions, and is with low costs, and faller B can weave the style around the wire.

Preferably, the eccentric transmission mechanism comprises a transmission wheel, an adjusting bolt and a moving part, a groove which radially penetrates through the transmission wheel is formed in the front face of the transmission wheel, the adjusting bolt is rotatably arranged in the groove, the moving part is in spiral connection with the adjusting bolt, the adjusting bolt rotates to drive the moving part to slide in the radial direction of the transmission wheel, the moving part and the weft needle swing arm are driven by a linkage arm, the transmission shaft drives the transmission wheel to rotate, the linkage arm is driven to drive the weft needle swing arm to swing, and the weft needle swing arm drives the needle bed A to horizontally slide through the transmission of the connecting rod A. By rotating the adjusting bolt in the eccentric transmission mechanism, the movable part slides in the radial direction of the transmission wheel, the eccentric distance of the movable part relative to the center of the transmission wheel can be changed, the eccentric transmission mechanism performs eccentric transmission, and the swing amplitude of the swing arm of the weft needle with different eccentric distances is changed along with the eccentric distance, so that the adjustment of the swing amplitude of the needle bed A is realized. When the structure is adjusted, only the adjusting bolt needs to be rotated very conveniently.

Preferably, the groove is internally provided with a bayonet and an adjusting channel which can be used for the moving part to slide in, the driving wheel extends to the bayonet to form a clamping block, a nut of the adjusting bolt is provided with a neck, the neck of the nut is arranged in the bayonet and limits the sliding of the clamping block, the screw part of the adjusting bolt is positioned in the adjusting channel, the moving part is provided with a sliding block which is arranged in the adjusting channel in a sliding mode and sleeved on the screw part and a connecting shaft which extends out of the adjusting channel, the outer side of the adjusting channel is also provided with a limiting plate which is abutted against the edge of the sliding block to limit the sliding block to be separated out of the adjusting channel, one end of the groove is provided with a sliding block inlet for the sliding block to be arranged from the side edge, the other end of the groove is provided with a bolt rotation adjusting port, and the head end of the nut of the bolt is positioned in the bolt rotation adjusting port. During the stroke adjustment, the tool stretches into the bolt rotation adjusting opening and is matched with the nut head end of the bolt to rotate the bolt, and at the moment, the moving part is matched with the bolt in a threaded mode to drive the sliding block to slide in the adjusting channel, so that the eccentric distance of the sliding block relative to the center of the driving wheel is changed, and the operation is convenient.

Preferably, driving motor and main shaft between through the transmission of belt pulley group B, still be equipped with motor mounting structure in the frame, motor mounting structure include that motor mounting panel, one side articulate the regulating plate on the mounting panel, still articulate on the mounting panel and have the bracing piece, regulating plate one side articulates there is the supporting shoe, the bracing piece wears to establish and forms the support to the regulating plate in the supporting shoe, the motor dress is on the regulating plate. During the use with the fixed dress of motor on the regulating plate, through regulating plate one side articulated to through the bracing piece support, make its atress can carry out the angular adjustment of minivered range downwards, thereby belt in the taut pulley group avoids the belt to cross the pine, the not good problem of transmission.

Preferably, the motor mounting structure further comprises a first clamping strip and a second clamping strip which are fixed on the frame and are arranged oppositely, each clamping strip is provided with a notch, two side edges of the mounting plate respectively slide into the notches of the corresponding clamping strips, a screw is screwed at the upper end of each clamping strip, and the end part of each screw abuts against the mounting plate to position the plate. The mounting plate is simple in assembly structure, and can slide into the notches of the two clamping strips during operation to fix the screwed screws.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is a block diagram of an embodiment of the present invention;

FIG. 3 is a diagram of a transmission structure of the motor and the spindle according to an embodiment of the present invention;

FIG. 4 is a transmission structure diagram of the needle bed in the embodiment of the present invention;

FIG. 5 is a view showing a structure of the transmission structure for lifting the needle bed in the embodiment of the present invention;

FIG. 6 is a transmission structure diagram of horizontal sliding of the needle bed in the embodiment of the present invention;

FIG. 7 is a transmission structure diagram of horizontal sliding of the needle bed in the embodiment of the present invention;

fig. 8 is a transmission structure diagram of the eccentric transmission mechanism and the linkage arm according to the embodiment of the present invention;

fig. 9 is a structural diagram of an eccentric transmission mechanism according to an embodiment of the present invention;

FIG. 10 is a structural diagram of a driving wheel according to an embodiment of the present invention;

fig. 11 is a matching view of the adjusting bolt and the moving member according to the embodiment of the present invention;

FIG. 12 is a view showing a structure of a driving mechanism of a needle plate A according to an embodiment of the present invention;

FIG. 13 is a view showing a structure of a driving mechanism of a needle plate B according to an embodiment of the present invention;

fig. 14 is a structural view of a motor installation structure according to an embodiment of the present invention.

In the figure: <xnotran> 1, 2, A3, B4, 5, 6, 21, 7, A8, 71, 72, 73, 9, 81, 82, 83, 84, 85, A86, 87, A10, 11, 111, 112, 22, 31, B12, 121, 122, 123, 41, 15, 151, 152, 153, B154, 155, 1a, 851, 852, 853, 8511, A19, 3425 zxft 3425, 3562 zxft 3562, 4324

zxft

4324, 8521, 8522, 8521a, 8531, 8532, 85114, 3245 zxft 3245, 3732 zxft 3732, B30, 20, 201, 202, 203, 204, 205, 206. </xnotran>

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-14, the crochet machine of the utility model comprises a frame 1, a needle bed 2, a needle plate A3 and a needle plate B4, a main shaft 5 and a driving motor 6, wherein the driving motor 6 can drive the main shaft 5 to rotate,

the needle bed 2 is provided with a needle tube 21, the needle bed 2 can move up and down and left and right, the frame 1 is also provided with a lifting group 7 which can drive the needle bed 2 to move up and down and a sliding group A8 which can drive the needle bed 2 to move left and right,

the two ends of the needle bed 2 are respectively supported by the lifting groups 7 at the two sides of the frame 1, and each lifting group 7 comprises: the needle bed seat 71 used for supporting the needle bed 2, the driving arm 72 and the connecting arm 73, the two ends of the driving arm 72 are respectively connected with the needle bed seat 71 and the connecting arm 73, the connecting arm 73 can drive the needle bed seat 71 to move up and down through the driving arm 72 hinged with the connecting arm 73, and the connecting arm 73 in the lifting group 7 positioned at the two sides of the frame 1 is driven by the connecting roller 9;

the sliding group A8 is arranged on one side of the machine frame 1 and comprises a transmission shaft 81, a connecting rod 82, a weft needle swing arm 83, a linkage shaft 84 and an eccentric transmission mechanism 85, the transmission shaft 81 and the linkage shaft 84 realize transmission through a belt pulley group A86, the eccentric transmission mechanism 85 is arranged on the linkage shaft 84, the eccentric transmission mechanism 85 and the weft needle swing arm 83 are transmitted through a linkage arm 87, a movable rod A10 penetrates through the needle bed seat 71, the needle bed 2 is connected to one end of the movable rod A10, the other end of the movable rod A10 is also hinged to the connecting rod 82, the weft needle swing arm 83 can drive the movable rod A10 to slide left and right in the needle bed seat 71 through the transmission of the connecting rod 82, one end of the main shaft 5 is in transmission connection with the connecting roller 9 through a linkage structure 11, the linkage structure 11 comprises a linkage sleeve 111 and a connecting rod 112, the linkage sleeve 111 is arranged on the main shaft 5 and provided with a rod, one end of the connecting rod 112 is fixed with the connecting roller 9, and the other end of the connecting rod is hinged to the rod; the other end of the main shaft 5 and the transmission shaft 81 realize transmission through a bevel gear structure 22;

the needle plate A3 is provided with a latch needle 31, the needle plate A3 can move back and forth, the frame 1 is also provided with a sliding group B12 which can drive the needle plate A3 to move back and forth, the sliding group B12 is provided with: the swing rod 121 capable of pulling the needle plate A3 to slide back and forth and the pull rod 122 driving the swing rod 121 to rotate are arranged, one end of the pull rod 122 is rotatably connected with the swing rod 121, and the other end of the pull rod 122 is sleeved on the main shaft 5 through the transmission sleeve 123;

the needle board B4 is provided with a crochet needle 41, the needle board B4 is movably arranged on the frame 1 and drives the crochet needle on the needle board B4 to move around the latch needle 31 on the needle board A3, the frame 1 is also provided with a pendulum winding 15 which can drive the needle board B4 to move, and the pendulum winding 15 is provided with: the needle plate mechanism comprises a support arm 151 fixed with the rack 1, a transmission arm 152 hinged on the support arm 151 and a transmission piece 153 driving the transmission arm 152 to swing, wherein the transmission piece 153 is sleeved on a transmission shaft 81 and hinged with the transmission arm 152, one end of a needle plate B4 is connected with the transmission arm 152, a movable rod B154 is arranged at the end part of the needle plate B4, a hole for the movable rod B154 to be clamped in is formed in the upper end of the transmission arm 152, the movable rod B154 is arranged in the hole and can respectively abut against the left end and the right end of the transmission arm 152 through two shaft blocks 155 arranged on the movable rod B154, and a movable hole 1a for the transmission rod B154 to transversely penetrate and swing inwards is formed in the rack 1;

specifically, the eccentric transmission mechanism 85 comprises a transmission wheel 851, an adjusting bolt 852 and a movable piece 853, wherein a groove 8511 radially penetrating through the transmission wheel is formed in the front surface of the transmission wheel 851, the adjusting bolt 852 is rotatably arranged in the groove 8511, the movable piece 853 is in spiral connection with the adjusting bolt 852, the adjusting bolt 852 rotates to drive the movable piece 853 to slide in the radial direction of the transmission wheel 851, the movable piece 853 and a weft needle swing arm 83 are driven by a linkage arm 87, a transmission shaft 81 drives the transmission wheel 851 to rotate, the linkage arm 87 drives the weft needle swing arm 83 to swing, and the weft needle swing arm 83 drives a needle bed A3 to horizontally slide through the transmission of a connecting rod A19;

specifically, a bayonet 85111 and an adjusting channel 85112 in which a movable element can slide are arranged in the groove 8511, a driving wheel 851 extends to the bayonet 85111 to form a clamping block 85113, the adjusting bolt 852 comprises a nut 8521 and a screw part 8522, the nut 8521 is provided with a neck part 8521a1, the neck part 8521a1 of the nut 8521 is installed in the bayonet 85111 and limits the sliding of the clamping block 3579 zxft 86579, the screw part 8522 of the adjusting bolt 852 is positioned in the adjusting channel 85112, the movable element 853 is provided with a limiting plate 85114 which is arranged in the adjusting channel 85112 in a sliding manner and sleeved on the screw part 8522 and a sliding block 8532 which extends out of the adjusting channel, the adjusting bolt 852 is also provided with a limiting plate which is limited by the edge of the sliding block 8531 to be separated from the adjusting channel 3525 zxft, one end of the sliding block 8531 is provided with an inlet 528583 which is installed from the side of the sliding block 8531, and is positioned in the adjusting bolt 5383, and the adjusting bolt is positioned in the adjusting bolt 5383 which rotates in the adjusting channel 5329;

specifically, the driving motor 6 and the spindle 5 are driven by a belt pulley set B30, the belt pulley set comprises a driving wheel, a driven wheel and a belt pulley sleeved on the driving wheel and the driven wheel, the frame 1 is further provided with a motor mounting structure 20, the motor mounting structure 20 comprises a motor mounting plate 201 and an adjusting plate 202, one side of the adjusting plate is hinged on the mounting plate 201, the mounting plate 201 is further hinged with a support rod 203, one side of the adjusting plate 202 is hinged with a support block 204, the support rod 203 penetrates through the support block 204 to form a support for the adjusting plate, and the motor is mounted on the adjusting plate;

specifically, the motor mounting structure 20 further includes a first clamping strip 205 and a second clamping strip 206 that are fixed on the frame 1 and are arranged oppositely, the clamping strips 206 have notches, two side edges of the mounting plate 201 slide into the notches of the corresponding clamping strips respectively, screws are screwed on the upper ends of the clamping strips, and the end portions of the screws abut against the mounting plate to position the plate.

The working principle is as follows:

through the same main shaft 5, the lifting group 7 can drive the needle bed 2 to move up and down, and the sliding group A8 drives the needle bed 2 to move left and right; and the sliding group B12 can drive the needle plate A3 to move back and forth, and the pendulum winding group 15 can drive the crochet needle 41 of the needle plate B4 to wind around the latch needle 31 on the needle plate A3. The driving motor 6 and the main shaft 5 are simple in structure, different actions of a plurality of needle plates can be realized, the cost is low, and the needle plate B4 can be wound to weave patterns.

When the weft needle swing arm device is used, the motor 6 drives the main shaft 5 to rotate through the belt pulley group A86, the main shaft 5 rotates to drive the transmission shaft 81 to rotate through the bevel gear structure 22, and the transmission shaft 81 drives the linkage shaft 81 to rotate through the belt pulley group A86, so that the weft needle swing arm 83 is driven to swing, and the needle bed 2 is driven to move left and right; meanwhile, the main shaft 5 rotates, the driving arm 72 can be driven by the transmission of the linkage structure 11 to drive the needle bed base 2 to move up and down, and the needle bed base 2 can move up and down and left and right simultaneously under the rotation of the main shaft 5;

meanwhile, the main shaft 5 rotates to drive the transmission sleeve 123, the pull rod 122 on the transmission sleeve can pull the swing rod 121 to swing, and the swing rod 121 drives the needle plate A to move back and forth relative to the needle plate B;

meanwhile, the main shaft 5 drives the transmission shaft 81, the transmission shaft 81 rotates to enable the transmission piece 153 on the transmission shaft to drive the transmission arm 152 to swing, so that the movable rod B154 is pulled to swing in the movable hole 1a, the crochet needle 41 of the needle plate B4 winds the latch needle 41 on the needle plate A3 to perform winding and weaving.

During stroke adjustment, a tool extends into the bolt rotation adjusting opening 85116 and is matched with the nut head end of the bolt 852 to rotate the bolt 852, and at the moment, the movable piece 853 is in threaded fit with the bolt 852 to drive the sliding block 8531 to slide in the adjusting channel 85112, so that the eccentric distance of the sliding block 8531 relative to the center of the driving wheel 851 is changed, and the operation is convenient.

When in use, the motor 6 is fixedly arranged on the adjusting plate 202, is hinged at one side of the adjusting plate 202 and is supported by the supporting rod 203, so that the bearing weight of the motor can be adjusted downwards in a small range, the belt in the belt pulley set B30 is tensioned, and the problems of over loosening of the belt and poor transmission are avoided.

It should be noted that all the directional indicators (such as upper, lower, front and rear … …) in the description of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "coupled," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral with; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A crochet machine is characterized by comprising a frame, a needle bed, a needle plate A, a needle plate B, a main shaft and a driving motor, wherein the driving motor can drive the main shaft to rotate,

the both ends of needle bed are supported through the lift group of frame both sides respectively, and every group lift group all includes: the needle bed seat is used for supporting a needle bed, and the driving arm and the connecting arm are connected with the needle bed seat and the connecting arm respectively at two ends of the driving arm, the connecting arm can drive the needle bed seat to move up and down through the driving arm hinged with the connecting arm, and the connecting arms in the lifting groups at two sides of the rack are driven by the connecting roller;

the faller B is provided with a crochet hook, the faller B is movably arranged on the frame and drives the crochet hook on the faller B to move around the latch needle on the faller A, the frame is also provided with a pendulum winding which can drive the faller B to move, and the pendulum winding is provided with: the needle plate B is connected with the transmission arm.

2. The crochet machine according to claim 1 wherein the needle board B is provided at an end thereof with a movable bar B, the driving arm is provided at an upper end thereof with a hole for the movable bar B to be inserted therein, and the movable bar B is fitted into the hole and is respectively abutted against both ends of the driving arm via two blocks provided on the movable bar B.

3. The crochet machine according to claim 1 or 2, characterized in that the eccentric transmission mechanism comprises a transmission wheel, an adjusting bolt and a movable member, wherein a groove radially penetrating the transmission wheel is formed on the front surface of the transmission wheel, the adjusting bolt is rotatably disposed in the groove, the movable member is in screw connection with the adjusting bolt, the movable member is driven by the rotation of the adjusting bolt to slide radially on the transmission wheel, the movable member and the weft swing arm are driven by a linkage arm, the transmission shaft drives the transmission wheel to rotate, the linkage arm is driven to drive the weft swing arm to swing, and the weft swing arm drives the needle bed A to horizontally slide through the transmission of a connecting rod A.

4. The crochet machine of claim 3 wherein the groove has a bayonet and an adjustment channel for the movable member to slide therein, the drive wheel having a detent extending toward the bayonet, the adjusting bolt having a neck on the nut which fits into the bayonet and limits the sliding movement of the nut, the adjusting bolt having a shank portion located in the adjustment channel, the movable member having a slider slidably disposed in the adjustment channel and fitted over the shank portion and a connecting shaft extending out of the adjustment channel, the adjustment channel further having a limiting plate on the outside thereof which abuts against the edge of the slider to limit the sliding movement outward, the groove having a slider inlet at one end for the slider to be inserted laterally therein and a bolt rotation adjustment port at the other end thereof, the head end of the bolt being located in the bolt rotation adjustment port.

5. The crochet machine according to claim 1 or 2, characterized in that the driving motor and the main shaft are driven by a belt pulley set B, a motor mounting structure is further arranged on the frame, the motor mounting structure comprises a motor mounting plate, an adjusting plate hinged on the mounting plate at one side, a support rod hinged on the mounting plate at one side, a support block hinged on the adjusting plate at one side, the support rod penetrates through the support block to form a support for the adjusting plate, and the motor is mounted on the adjusting plate.

6. The crochet machine of claim 5 wherein the motor mounting structure further comprises a first clamping strip and a second clamping strip fixed on the frame and disposed opposite to each other, the clamping strips having notches, the two sides of the mounting plate respectively sliding into the notches of the corresponding clamping strips, the upper ends of the clamping strips being screwed with screws, the ends of the screws abutting against the mounting plate to position the plate.