CN116219619A - Needle pushing triangle system of flat knitting machine - Google Patents

Abstract

The invention discloses a push pin triangle system of a flat knitting machine, which comprises a mother board, push pin triangles and a driving mechanism, wherein a group of push pin triangles are six, a pair of middle push pin triangles, a pair of main push pin triangles and a pair of auxiliary push pin triangles are respectively arranged from the center to the two sides, and each push pin triangle is composed of two opposite trapezoidal or partial trapezoidal protruding blocks; the first connecting rod is connected with and drives a pair of main push pin cams and a pair of auxiliary push pin cams; the second link connects and drives a pair of intermediate push pin cams. The invention adds the middle push pin triangle, and can be understood as decomposing the main push pin triangle in the prior art into the main push pin triangle and the middle push pin triangle, and the middle push pin triangle is independently driven by the second connecting rod, and the systems are also independent, so that the push pin triangles of the systems do not need to keep synchronous movement, and each system can independently adjust the pressing degree of the sinker according to the fabric requirement.

Description

Needle pushing triangle system of flat knitting machine

Technical Field

The invention belongs to the technical field of knitting machinery, and particularly relates to a push needle cam system of a flat knitting machine.

Background

The push needle triangle is an important part of the computerized flat knitting machine and is used for controlling the back-and-forth swing of the sinker to enable the sinker to be opened and closed rotatably relative to the needle bed opening, and the sinker presses fabrics when the sinker is closed so as to facilitate the completion of knitting and needle turning actions, and the sinker needs to be opened immediately before the completion of looping and needle joining.

The applicant has filed a patent entitled "a push needle triangle system suitable for stable needle attachment", application number 2022101615510, which is the closest prior art to the present application. The push pin triangle system in the prior art comprises a motherboard, a push pin triangle and a driving mechanism, wherein the motherboard is provided with a plurality of long slot holes, the push pin triangle is positioned on the front surface of the motherboard, the driving mechanism is positioned on the back surface of the motherboard, and the push pin triangle is connected and driven by a connecting piece through the long slot holes; the push pin cams are two pairs of four to form a group, one pair of main push pin cams is positioned in the middle, and one pair of auxiliary push pin cams are arranged on two sides of the main push pin cams; the push pin cams are formed by two opposite trapezoidal or partial trapezoidal lugs. In the case of multiple systems, for example, three systems, the push pin cam system has three groups of twelve push pin cams, which are driven by a driving system to work. Because the three systems work synchronously, if the three systems perform the stitch turning and knitting actions simultaneously, because the needle pushing cams of the three systems are synchronous, the opening angle of the needle pushing cams is as large regardless of stitch turning or knitting, so that the pressing down degree of the sinker is the same, and the loops of the knitting needle when stitch turning are easily broken by the sinker when knitting individual fabrics or when using individual yarns.

Disclosure of Invention

The invention aims to overcome the defects and provide a push needle cam system of a flat knitting machine capable of being adjusted by areas.

Therefore, the technical scheme adopted by the invention is as follows: the needle pushing triangle system of the flat knitting machine comprises a motherboard, needle pushing triangles and a driving mechanism, wherein the motherboard is provided with a plurality of long slot holes by taking the plurality of needle pushing triangles as a group, the needle pushing triangles are positioned on the front surface of the motherboard, the driving mechanism is positioned on the back surface of the motherboard, and the needle pushing triangles are connected and driven by penetrating through the long slot holes through a connecting piece; the method is characterized in that: the group of push pin cams is six, and a pair of middle push pin cams, a pair of main push pin cams and a pair of auxiliary push pin cams are respectively arranged from the center to the two sides, and each push pin cam is composed of two opposite trapezoidal or partial trapezoidal protruding blocks; the first connecting rod is connected with and drives a pair of main push pin cams and a pair of auxiliary push pin cams; the second link connects and drives a pair of intermediate push pin cams, and the second link connects and drives only a pair of intermediate push pin cams in the same group.

Further, the outer side of the middle push pin triangle and the inner side of the main push pin triangle are partially overlapped with each other; the thickness of the bump at the overlapped portion is smaller than that of the bump main body portion, so that the two push pin cams are overlapped with a gap.

The first connecting rod and the second connecting rod are respectively provided with at least one guide groove with an inclined section, and the rollers connected with the push pin cams extend into the guide grooves and move up and down along with the translation of the first connecting rod and the second connecting rod, wherein the vertical movement is perpendicular to the movement direction of the connecting rod.

The push needle triangle system comprises N groups of push needle triangles, a first connecting rod drives each main push needle triangle and each auxiliary push needle triangle in the N groups of push needle triangles at the same time, and N second connecting rods drive a pair of intermediate push needle triangles in the N groups of push needle triangles respectively.

The second connecting rod is overlapped on the first connecting rod, and the corresponding connecting piece passes through the long groove hole on the motherboard after crossing the first connecting rod and is connected with the middle push pin triangle.

The invention adds the middle push pin triangle, and can be understood as decomposing the main push pin triangle in the prior art into the main push pin triangle and the middle push pin triangle, and the middle push pin triangle is independently driven by the second connecting rod, and the systems are also independent, so that the push pin triangles of the systems do not need to keep synchronous movement, and each system can independently adjust the pressing degree of the sinker according to the fabric requirement.

Drawings

Fig. 1 is a schematic diagram of a prior art push pin cam system.

Fig. 2 is a schematic view of a push pin cam system of the present invention.

FIG. 3 is a schematic representation of the reverse side of the present invention.

Fig. 4 is an exploded view of the present invention.

Fig. 5 is a schematic view of the present invention in each direction of the main push pin cam and the intermediate push pin cam.

Fig. 6 is a schematic drawing of the trace of the stitches at the time of knitting according to the present invention.

Fig. 7 is a schematic diagram of the needle track during needle turning.

The reference numerals are as follows: 1. left of the main push pin triangle, left of the auxiliary push pin triangle, 3 of the main push pin triangle, right of the auxiliary push pin triangle, 5 of the guide block, 6 of the auxiliary push pin triangle, left of the main push pin triangle, 8 of the middle push pin triangle, right of the middle push pin triangle, 10 of the main push pin triangle, right of the auxiliary push pin triangle, 12 of the auxiliary push pin triangle, knitting needle track, 13 of the turning needle track, 14 of the knitting needle, 15 of the ejector pin rod, 16 of the sinker mother plate, 17 of the middle mountain guide block, 18 of the turning needle triangle, 19 of the guide block, 20 of the second connecting rod, 21 of the middle guide block, 22 of the middle connecting block, 23 of the guide groove, 24 of the roller, 25 of the rack, 27 of the first connecting rod, 28 of the long slot hole.

Detailed Description

See fig. 1. In the prior art, a group of push pin cams is four, namely main push pin cams 1 and 3 and auxiliary push pin cams 2 and 4 positioned at two sides.

See fig. 2-5. This embodiment shows the case of a system, i.e. a set of push pin cams. The number of the group of push needle cams is six, and the group of push needle cams is respectively a middle push needle cam 8 and a middle push needle cam 9, a main push needle cam 7 and a main push needle cam 10, and auxiliary push needle cams 6 and 11 which are symmetrically arranged. Wherein the relationship of the main push pin triangle 7 and the middle push pin triangle 8 is illustrated; the two are respectively composed of an upper trapezoid block 71, a lower trapezoid block 72, an upper trapezoid block 81 and a lower trapezoid block 82 which are opposite, the middle push pin triangle 8 is close to the main push pin triangle 7 at the left side, the upper trapezoid block and the lower trapezoid block are respectively thinned in the direction facing the paper surface to form thinner parts 811 and 812, and the right parts 812 and 822 of the upper trapezoid block and the lower trapezoid block are still of normal thickness; the main push pin triangle 7 is thinned at the right side near the middle push pin triangle, the upper and lower trapezoid blocks are thinned in the direction away from the paper surface to form thinner parts 711, 721, respectively, while the left side is still of normal thickness. 711 and 811 overlap, 721 and 821 overlap with a mating gap therebetween such that the main push pin cam 7 and the intermediate push pin cam 8 are relatively movable in the up-down direction. After the main push pin cam 7 and the middle push pin cam 8 are overlapped, the thickness and the width of the main push pin cam are equal to those of the main push pin cam 1 in the prior art, so the embodiment can be also understood as decomposing the original main push pin cam into two cams.

The main push pin cams 7, 10 and the auxiliary push pin cams 6, 11 respectively pass through the long slotted holes 28, the rollers 24 are connected through the guide blocks 19, the rollers 24 extend into the guide grooves 23 of the first connecting rods 27, and when the first connecting rods 27 move left and right, the guide grooves 23 push the rollers 24 to move up and down so as to drive the push pin cams to move up and down along the long slotted holes 28. The intermediate push pin cams 8, 9 also pass through the long slot 28 and connect the rollers 24 via the intermediate connecting block 22 and the intermediate guide block 21, wherein the intermediate connecting block 22 and the intermediate guide block 21 are fixed at both ends so as to "cross over" the first link 27 without affecting the movement of the first link, and the rollers 24 extend into the guide slots 23 of the second link 20; when the second connecting rod 20 moves left and right, the guide groove 23 pushes the roller 24 to move up and down, and then drives the middle push pin cams 8 and 9 to move up and down along the long groove hole 28.

It should be noted that, the first link in this embodiment is a longer link, only a portion of which is shown in the figure; when the machine is multi-system, for example, there are three systems, then there are three sets of push pin cams, and the first link is required to connect and drive a total of 12 main push pin cams and auxiliary push pin cams of the three sets of push pin cams. The second connecting rod is a shorter connecting rod, is connected with a gear and a motor through a fixed rack 25, and only controls two middle push pin cams in a group of push pin cams.

See fig. 6 and 7. The machine head is right-hand line in the figure, and the knitting needle is left-hand line; 12a is the track of the upper stitch of the thimble rod during knitting, and 12b is the track of the lower stitch of the thimble rod during knitting; 13a is the track of the stitch on the ejector pin rod during needle turning, and 13b is the track of the stitch under the ejector pin rod during needle turning.

In the needle track of the section e-f-g-h in the figure, the original section e-h is the same push needle triangle, the main push needle triangle and the middle push needle triangle are split, the main push needle triangle at the section e-f is still driven by the first connecting rod, the three systems are synchronous, and the middle push needle triangle at the section g-h is driven by the second connecting rod and acts independently.

Claims (5)

1. The needle pushing triangle system of the flat knitting machine comprises a motherboard, needle pushing triangles and a driving mechanism, wherein the motherboard is provided with a plurality of long slot holes by taking the plurality of needle pushing triangles as a group, the needle pushing triangles are positioned on the front surface of the motherboard, the driving mechanism is positioned on the back surface of the motherboard, and the needle pushing triangles are connected and driven by penetrating through the long slot holes through a connecting piece; the method is characterized in that: the group of push pin cams is six, and a pair of middle push pin cams, a pair of main push pin cams and a pair of auxiliary push pin cams are respectively arranged from the center to the two sides, and each push pin cam is composed of two opposite trapezoidal or partial trapezoidal protruding blocks; the first connecting rod is connected with and drives a pair of main push pin cams and a pair of auxiliary push pin cams; the second link connects and drives a pair of intermediate push pin cams, and the second link connects and drives only a pair of intermediate push pin cams in the same group.

2. The push-stitch cam system of a flat knitting machine as in claim 1, wherein: the trapezoid protruding blocks are partially overlapped on the outer side of the middle push pin triangle and the inner side of the main push pin triangle; the thickness of the bump at the overlapped portion is smaller than that of the bump main body portion, so that the two push pin cams are overlapped with a gap.

3. The push-stitch cam system of a flat knitting machine as in claim 1, wherein: the first connecting rod and the second connecting rod are respectively provided with at least one guide groove with an inclined section, and the rollers connected with the push pin cams extend into the guide grooves and move up and down along with the translation of the first connecting rod and the second connecting rod, wherein the vertical movement is perpendicular to the movement direction of the connecting rod.

4. The push-stitch cam system of a flat knitting machine as in claim 1, wherein: the push needle triangle system comprises N groups of push needle triangles, a first connecting rod drives each main push needle triangle and each auxiliary push needle triangle in the N groups of push needle triangles at the same time, and N second connecting rods drive a pair of intermediate push needle triangles in the N groups of push needle triangles respectively.

5. The push-stitch cam system of a flat knitting machine as in claim 1, wherein: the second connecting rod is overlapped on the first connecting rod, and the corresponding connecting piece passes through the long groove hole on the motherboard after crossing the first connecting rod and is connected with the middle push pin triangle.

Images