CN-122013426-A - Sinker of flat knitting machine and flat knitting machine

CN122013426ACN 122013426 ACN122013426 ACN 122013426ACN-122013426-A

Abstract

The invention discloses a sinker of a flat knitting machine and a flat knitting machine, which belong to the field of knitting machinery, solve the problem that the closing depth of the sinker is shallower due to the single movement track of the sinker, and the technical proposal for solving the problem mainly comprises a body, wherein a first track groove and a second track groove are arranged on the body, the first track groove comprises a first straight line section, a first arc section and a second arc section, the second track groove comprises a second straight line section and a third arc section, the first straight line section is parallel to the second straight line section, the first arc section and the third arc section have a common first circle center, and the second arc section takes the end part of the third arc section far away from the second straight line section as a second circle center. The sinker is formed by combining various movements, can effectively and reliably press the coil, and can meet the requirement of repeated local knitting or knitting without waste yarns.

Inventors

FU HONGPING
FU KEYUN
CHEN DEWEI
HUANG YONGSEN
ZHUO KEHUANG
Zhang Zhijue

Assignees

浙江丰帆数控机械有限公司

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (10)

1. The utility model provides a sinker of flat knitting machine, includes the body, the body has press part, butt and afterbody, its characterized in that is equipped with first track groove and second track groove on the body, first track groove includes first straight line section, first circular arc section and second circular arc section, the second track groove includes second straight line section and third circular arc section, first straight line section is on a parallel with the second straight line section, first circular arc section and third circular arc section have a shared first centre of a circle, the second circular arc section is kept away from the tip of second straight line section with the third circular arc section and is the second centre of a circle, the sinker has continuous first track, second track and third track on flat knitting machine, and under first track, the sinker removes along the direction of first straight line section and second straight line section and forms first track, and the sinker swings around first centre of a circle and forms the third track around the second centre of a circle.
2. The flat knitting machine comprises a needle bed, a sinker and a driving mechanism for driving the sinker to move, wherein a plurality of slots for installing the sinker are formed in the needle bed, and the sinker is characterized in that the sinker is provided with an initial position, an upward movement position, a first pressing position and a second pressing position relative to the needle bed, the initial position and the upward movement position are respectively positioned at two ends of a first track, the upward movement position and the first pressing position are respectively positioned at two ends of a second track, and the first pressing position and the second pressing position are respectively positioned at two ends of a third track.
3. The flat knitting machine according to claim 2, wherein the first track groove is provided with a first positioning shaft in a penetrating manner, the second track groove is provided with a second positioning shaft in a penetrating manner, the first positioning shaft is positioned at the end of the first straight line section far away from the first circular arc section in the initial position, the second positioning shaft is positioned at the end of the second straight line section far away from the third circular arc section in the upward movement position, the first positioning shaft is positioned at the joint of the first straight line section and the first circular arc section, the second positioning shaft is positioned at the joint of the second straight line section and the third circular arc section in the first pressing position, the second positioning shaft is positioned at the end of the third circular arc section far away from the second straight line section in the second pressing position, and the first positioning shaft rotates to the end of the second circular arc section far away from the first circular arc section by taking the second positioning shaft as a second circle center in the second pressing position.
4. The flat knitting machine according to claim 2, wherein the first track of the sinker is parallel to the upper surface of the needle bed, the diameter of the circle in which the second track is located is larger than the diameter of the circle in which the third track is located, and the sinker drives the pressing portion to approach the needle bed along the second track and the third track.
5. The flat knitting machine of claim 2 wherein the groove walls on both sides of the first track groove are held in contact with a first positioning shaft and the groove walls on both sides of the second track groove are held in contact with a second positioning shaft.
6. The flat knitting machine according to claim 2, characterized in that the pressing portion and the tail portion are respectively at a front end and a rear end of the body, and the first track groove is closer to the pressing portion than the second track groove.
7. The flat knitting machine of claim 6 wherein the first straight line segment is at an end of the first track groove near the pressing portion, the first circular arc segment and the second circular arc segment extend toward a side away from the needle bed, the second straight line segment is at an end of the second track groove near the pressing portion, and the third circular arc segment extends toward a side away from the needle bed.
8. The flat knitting machine according to claim 2, wherein the needle bed is provided with a plurality of inserting sheets, the inserting grooves are formed between two adjacent inserting sheets, the inserting grooves are provided with step surfaces, the needle bed is further provided with a third positioning shaft in a penetrating mode, in the first track, the third positioning shaft is abutted against one side of the tail part, which is opposite to the needle bed, the step surfaces are abutted against one side of the tail part, which is opposite to the needle bed, and the third positioning shaft is matched with the step surfaces to limit rotation of the sinker.
9. The flat knitting machine according to claim 8, characterized in that the end of the tail portion remote from the pressing portion is provided with a guide surface, in the upward-moving position, the third positioning shaft abuts against the guide surface, the sinker rotates along the second track, and the guide surface guides the tail portion to abut against or separate from the third positioning shaft.
10. The flat knitting machine according to claim 2, characterized in that the needle bed is further provided with a third positioning shaft and a fourth positioning shaft in a penetrating manner, and in the first track, the third positioning shaft and the fourth positioning shaft are respectively abutted against both sides of the tail part so as to limit the rotation of the sinker.

Description

Sinker of flat knitting machine and flat knitting machine Technical Field The invention discloses a sinker of a flat knitting machine and the flat knitting machine, and belongs to the technical field of knitting machinery. Background The flat knitting machine is a double-needle-plate latch needle weft knitting machine, a cam device on a needle bed is just like a group of plane cams, the stitch of a knitting needle can enter a channel of each cam, the knitting needle is forced to regularly lift in a needle groove of the needle bed by moving the cam, and yarns can be knitted into knitted fabrics through actions of needle hooks and needle latches. The knitting needle is characterized in that a loop gradually withdraws from a needle hook in the ascending process, a needle tongue is opened and is withdrawn from the needle tongue to be hung on a needle rod, the needle hook hooks a newly laid yarn in the descending process and pulls and bends the yarn into a loop, the original loop is withdrawn from the needle hook, the new loop passes through an old loop and is connected with the old loop in series, and a plurality of loop strings formed by knitting are mutually connected to form a knitted fabric. The flat knitting machine is provided with a sinker, the sinker presses or blocks a coil in the looping process of the flat knitting machine, so that the knitting function of the flat knitting machine is greatly increased, the patterns of a knitted fabric are enriched, in the prior art, the sinker is rotated to be opened or closed around a fixed shaft, the single rotation motion of the sinker cannot effectively and reliably press the coil or a long dashed line which is virtually floated at the edge of a tooth mouth piece, the sinker is often drilled into the coil or the long dashed line, the coil moves upwards along with a knitting needle, the needle tongue of the knitting needle cannot be separated, the knitting needle cannot complete knitting, the knitted fabric is damaged, in addition, the closing depth of the sinker is shallow, the sinker is difficult to reliably press the coil when the knitting needle is used for local knitting or waste yarn-free knitting, and knitting damage easily occurs. Disclosure of Invention The invention aims to solve the problems that the sinker cannot effectively and reliably press a coil or a long dashed line which is virtually floated on the edge of a tooth mouth piece due to a single movement track of the sinker and the closing depth of the sinker is shallow. The technical problems are solved, and the invention adopts the following technical scheme: The utility model provides a sinker of flat knitting machine, includes the body, the body has press part, butt and afterbody, be equipped with first track groove and second track groove on the body, first track groove includes first straightway, first circular arc section and second circular arc section, the second track groove includes second straightway and third circular arc section, first straightway is on a parallel with the second straightway, first circular arc section and third circular arc section have a shared first centre of a circle, the second circular arc section is kept away from the tip of second straightway with the third circular arc section and is the second centre of a circle, the sinker has continuous first orbit, second orbit and third orbit on flat knitting machine, and under first orbit, the sinker moves along the direction of first straightway and second straightway and forms first orbit, and the sinker swings around first centre of a circle and forms the second orbit, the sinker swings around the second centre of a circle and forms the third orbit. The beneficial effects of the invention are as follows: The sinker is provided with a first track groove and a second track groove, the sinker is provided with a continuous first track, a second track and a third track on a flat knitting machine through the first track groove and the second track groove, the first track is in a straight line, the second track and the third track are all in circular arc lines, the sinker moves along the first track to enable the pressing part to be close to a coil or a long dashed line in the movement process of the flat knitting machine, then swings along the second track and the third track to press the coil or the long dashed line, the pressing process of the coil or the long dashed line is further successfully completed, the movement height of the sinker can be increased by adding a section of the first track in the movement track of the sinker, the sinker can be closer to the coil or the long dashed line before the sinker is pressed, the sinker can be ensured to be effectively and reliably pressed against the coil or the long dashed line, the coil or the long dashed line can be normally and conveniently and completely knitted, the finished product rate of the knitted fabric is improved, in addition, the movement of the sinker can be c