CN-224212904-U - Three-needle hook structure and cut loop velvet knitting machine

Abstract

The application relates to the field of textile machinery, in particular to a three-needle hook structure and a cut loop velvet knitting machine. The knitting needle comprises a cam device, a knitting needle assembly and a needle selector, wherein the cam device is provided with a first channel and a second channel, the knitting needle assembly comprises a crochet hook and a needle jack, the crochet hook is provided with a butt, the needle jack is provided with a butt, the crochet hook is hooked with the needle jack, a needle head of the crochet hook is provided with a first needle hook, a second needle hook and a third needle hook, the first channel is provided with a first cam track and a fourth cam track, the first cam track is gradually inclined upwards, the fourth cam track is gradually inclined downwards, the second channel is provided with a second cam track at a position corresponding to the fourth cam track, and three first steps, second steps and third steps which are sequentially arranged from top to bottom are arranged in the first cam track. The application provides a three-needle hook structure and a loop pile cutting knitting machine, which can avoid the occurrence of the condition of hitting a hooked needle butt and ensure the continuous operation of equipment.

Inventors

• ZHANG ZHIYONG

Assignees

• 泉州全能智控机械研究所有限公司

Dates

Publication Date

20260508

Application Date

20250427

Claims (3)

1. 1. The three-needle hook structure is characterized by comprising a cam device (3), a knitting needle assembly and a needle selector (5), wherein the cam device (3) is provided with a first channel and a second channel which is positioned above the first channel, the knitting needle assembly comprises a hook needle (1) and a needle jack (2), the hook needle (1) is provided with a butt (11) capable of walking in the second channel, the needle jack (2) is provided with a butt (21) capable of walking in the first channel, the lower end of the hook needle (1) is hooked with the upper end of the needle jack (2) and can rotate relatively, and the needle selector (5) is used for pushing the butt (21) of the needle jack (2) into or out of the first channel; The needle head of the crochet hook (1) is provided with three first needle hooks (121), second needle hooks (122) and third needle hooks (123) which are sequentially arranged from top to bottom, a first triangular track (31) and a fourth triangular track (34) are sequentially arranged in the first channel along the advancing direction, the first triangular track (31) gradually inclines upwards along the advancing direction, the fourth triangular track (34) gradually inclines downwards along the advancing direction, the upper end of the first triangular track (31) is communicated with the upper end of the fourth triangular track (34), a second triangular track (32) is arranged at a position corresponding to the fourth triangular track (34), and the second triangular track (32) and the fourth triangular track (34) are arranged in parallel and have the same length; The needle jack comprises a first cam track (31), a first cam track (311), a second step (312) and a third step (313) which are sequentially arranged from top to bottom, wherein when the butt (21) of the needle jack (2) moves to the first step (311) and the butt (11) continuously advances, the butt (21) and the butt (11) respectively move downwards along the fourth cam track (34) and the second cam track (32), the third needle hook (123) hooks the yarn to perform knitting, the butt (21) of the needle jack (2) moves to the second step (312), the needle selector (5) pushes the butt (21) to be separated from the first cam track (31), the butt (11) continuously advances along the second cam track (32), the second needle hook (122) hooks the yarn to perform yarn to be Mao Bianzhi, and when the butt (21) of the needle jack (2) moves to the third step (313) and the needle selector (5) pushes the butt (21) to separate from the first cam track (31) to continuously hook the yarn to the second cam track (121).
2. 2. A loop pile knitting machine is characterized by further comprising a frame and a needle cylinder (4), wherein the needle cylinder (4) is arranged on the frame and can rotate around a central shaft of the frame, a vertically extending sheet groove (41) is formed in the cylinder wall of the needle cylinder (4), a knitting needle assembly is arranged in the sheet groove (41) and rotates along with the needle cylinder (4), a cam device is fixedly arranged on the frame and keeps a gap with the outer circle of the needle cylinder (4), the knitting needle assembly further comprises a jacquard piece (6), a lower supporting point (61) which is rotatably connected to the needle cylinder (4) is arranged at the lower end of the jacquard piece (6), two clamping arms (62) are arranged at the upper end of the jacquard piece (6), the lower end of the jacquard piece (2) is movably inserted between the two clamping arms (62), and accordingly the jacquard piece (6) can drive the jack piece (2) to rotate around a hook strip (21) which is connected with the crochet hook (1) in a rotating mode around the lower supporting point (61) or a rotary motion mode is arranged around the lower supporting point (61) to drive a needle carrier (5) to rotate around the lower supporting point (5).
3. 3. The loop pile knitting machine according to claim 2, characterized in that the second channel is provided with a fifth cam track (35) at a position corresponding to the first cam track (31), the fifth cam track (35) and the second cam track (32) are both upper walls of the second channel, and a hollow part (36) is arranged between the fifth cam track (35) and the second cam track (32).

Description

Three-needle hook structure and cut loop velvet knitting machine Technical Field The application relates to the field of textile machinery, in particular to a three-needle hook structure and a cut loop velvet knitting machine. Background The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. The three-layer pile knitting machine in the related art uses a single-layer crochet hook, and a multi-layer pile fabric is knitted by controlling the butt of a needle jack connected with the single-layer crochet hook to cooperate with a cam device. Referring to fig. 4 and 5, the principle of operation is that when the crochet needle 1 to be knitted is selected, the butt 21 of the needle jack 2 pushes the crochet needle 1 to move upwards under the action of the first cam track 31 of the cam device 3, so that the needle hook 12 of the crochet needle 1 moves upwards to the yarn feeding position of the yarn feeding nozzle, and as the needle cylinder 4 rotates, the butt 11 of the crochet needle 1 and the butt 21 of the needle jack 2 start to hook down into wool yarns under the action of the second cam track 32, and the butt 11 of the crochet needle 1 and the butt 21 of the needle jack 2 are clung to the corresponding cam tracks. When the length of the second triangular track 32 is shorter than that of the fourth triangular track 34, the jacquard sheet 6 presses the butt 21 of the short-pile needle jack 2 to be knitted into the sheet groove 41 of the needle cylinder 4 under the action of the needle selector 5 to separate from the triangular descending track, at the moment, the butt 11 of the crochet hook 1 does not descend after descending along with the second triangular track 32 to the bottom dead point of the second triangular track 32, and at the moment, the knitting length of the crochet hook 1 is short. When the pile is required to be woven, the crochet hook 1 and the needle jack 2 simultaneously move downwards along with the second triangular track 32 and the fourth triangular track 34, after the stroke exceeds the bottom dead center of the second triangular track 32, the butt 11 of the crochet hook 1 is separated from the second triangular track 32, at the moment, the crochet hook 1 is driven by the needle jack 2 to move downwards continuously, when the crochet hook moves downwards to the position reaching the third triangular track 33, the jacquard 6 presses the butt 21 of the needle jack 2 into the butt groove 41 under the action of the needle selector 5, the butt 21 of the needle jack 2 is separated from the fourth triangular track 34, at the moment, the crochet hook 1 and the needle jack 2 are stopped at the position of the third triangular track 33 and do not move downwards, and at the moment, the pile woven by the crochet hook 1 is the middle pile. When plush needs to be knitted, the butt 21 of the jack 2 moves down with the crochet hook 1 to the bottom dead center of the fourth cam track 34 under the action of the fourth cam track 34, and the plush knitted by the crochet hook 1 acts as a plush. With the rotation of the needle cylinder 4, the knitting operation of the next yarn feeding path is performed. In the process of realizing the technical scheme in the embodiment of the application, the inventor discovers that the technology at least has the following technical problems that a third triangular track is arranged between a second triangular track and a fourth triangular track, and the third triangular track is not through and has a track starting point. In the knitting process, a certain probability is caused by errors of a jacquard system or excessive yarn flocks are pushed by a triangular track, when the butt of a crochet needle descends to the starting point of a third triangular track, a needle jack is separated from a fourth triangular track and does not drive the crochet needle to descend, and along with the rotation of a needle cylinder, the butt of the crochet needle 1 collides with the starting point of the third triangular track, so that the butt 11 of the crochet needle is broken, equipment is damaged, and the equipment is forced to stop running. Disclosure of Invention In view of the above, the application provides a three-needle hook structure and a loop pile knitting machine, which can avoid the occurrence of the condition of hitting a needle butt of a hook needle and ensure the continuous operation of equipment. In order to achieve the above purpose, the present application is realized by the following technical scheme: The three-needle hook structure is characterized by comprising a triangle device, a knitting needle component and a needle selector; the knitting needle assembly comprises a crochet hook and a needle jack, wherein the crochet hook is provided with a butt capable of walking in the second channel, the needle jack is provided with a butt capable of walking in the first channel, the lower end of the