JPH07138854A - Cut yarn holder of flat knitting machine - Google Patents

Abstract

PURPOSE:To prevent the knitted fabric side end of a cut knitting yarn from twisting around a knitting machine by temporarily holding the knitted fabric side end of the cut knitting yarn while simplifying the structure. CONSTITUTION:This cut yarn holder is equipped with yarn nippers 12, 13 and 28 for nipping a knitting yarn 10 continuing from a feeder existing at a waiting position to a knitted fabric and feeding out the knitting yarn 10, a cut yarn holding member 47 for holding the knitting yarn 10 continuing from the yarn nippers to the knitted fabric accompanying a nipping action of the yarn nippers and a yarn cutter 34 existing at a space between the yarn nipper 28 and the cut yarn holding member 47 and capable of cutting the knitting yarn 10 after holding the knitting yarn 10 by the yarn nipper 28 and the cut yarn holding member 47. Among the knitting yarns 10 cut by the yarn cutter 34, the knitted fabric side yarn is temporarily held by the cut yarn holding member 47.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting yarn holding device for a flat knitting machine which temporarily holds the knitting yarn end on the knitted fabric side when cutting the knitting yarn of the flat knitting machine.

[0002]

2. Description of the Related Art Conventionally, when a flat knitting machine finishes knitting a predetermined amount and separates the knitted fabric from the knitting yarn, the knitting yarn is pulled and held at a predetermined position and cut by a knitting yarn cutting device to cut the knitted fabric. And the knitting yarn was separated. And the separated fabric is
The knitting yarn is dropped and collected together with the cut end of the knitting yarn.
At this time, the knitting yarn end at the end of the knitted fabric bounces in the direction of the tension due to the tension of itself when the knitting yarn is cut.

[0003]

In the case of the above-mentioned prior art, the knitting yarn is cut and the knitting yarn on the side of the knitted fabric bounces in the direction of tension, so that the bounced knitting yarn end is entangled with the member of the knitting machine. There was a problem of doing. Moreover, when the knitting yarn is entangled with the member of the knitting machine, the knitted fabric may not be surely dropped downward or may be in a state of being suspended by the knitting yarn.

The present invention has been made in view of the above-mentioned problems of the prior art. It has a simple structure and temporarily holds the cut knitting yarn end on the knitted fabric side and knits the knitting yarn end on the knitting fabric side. An object of the present invention is to provide a cutting yarn holding device for a flat knitting machine that prevents entanglement with the machine.

[0005]

The present invention relates to a yarn gripping device comprising a spring member for holding a knitting yarn connected to a knitted fabric from a yarn feeder at a standby position for drawing out a knitting yarn, a yarn hook, and the like, and A knitting yarn holding member formed of a leaf spring or the like for holding a knitting yarn connected to the knitted fabric from the yarn grasping device in accordance with a grasping operation of the yarn grasping device, and a knitting yarn between the yarn grasping device and the cutting yarn holding member, A yarn cutting device for cutting the post-knitting yarn held by the yarn gripping device and the cutting yarn holding member, and cutting the yarn on the knitted fabric side among the knitting yarns cut by the yarn cutting device, It is a cutting yarn holding device of a flat knitting machine, which is temporarily held by a yarn holding member.

[0006]

When the knitting yarn holding device of the flat knitting machine of the present invention cuts the knitting yarn after knitting, even if the end of the knitting yarn on the knitting fabric bounces due to its own tension, The yarn end is temporarily held so that the knitting machine does not get caught in the knitting machine.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The yarn gripping device provided on the lateral side of the flat knitting machine of this embodiment uses the knitting yarn 10 connected to the knitted fabric from the yarn feeder at the standby position on the lateral side of the flat knitting machine (not shown) through which the knitting yarn 10 is drawn out. It has a pair of yarn hooks 12 and 13 provided below the insertion position, and motors 14 and 15 that move the yarn hook 12.13 up and down. More specifically, the yarn hooks 12 and 13 have the same shape and are arranged symmetrically with each other.
As shown in, the hook portion 16 is formed at the tip, and the tip edge is a slope 18 that is inclined toward the opening side of the hook portion 16. On the lower portion of the hook portion 16, a protruding piece 20 that protrudes laterally from the opening of the hook portion 16 is formed. In addition, a concave portion 17 with which the knitting yarn 10 is engaged is formed in an upper portion inside the hook portion 16. In addition, yarn hooks 12, 1
A rack 22 is formed on one side edge of the hook portion 3
The side edge portion on which the rack 22 is formed is thicker than the tip portion on which the rack 22 is formed.

The yarn hooks 12 and 13 are mounted on the lifting guide 2
4 is provided so as to be vertically movable, and each rack 22 is engaged with a pinion 26 that is rotated by the motors 14 and 15. The yarn hooks 12 and 13 each have a hook portion 16 elastically sandwiched between a pair of spring members 28 constituting a yarn gripping device in a lowered position. This spring member 2
8 is fixed by bolts 32 to the frame portion 30 of the flat knitting machine in which the yarn hooks 12 and 13 are provided, and holds the knitting yarn 10 between itself and the hook portion 16.
Hook part 1 with a biasing force that does not come off even if the tension of 0
6 is in contact with the side surface.

In the vicinity of the yarn hooks 12 and 13,
A cutter 34, which is a yarn cutting device, is provided on the knitted fabric side. The cutter 34 includes a fixed blade 35 and a movable blade 36. The movable blade 36 is fixed to a swing member 37, and the swing member 37 is swingably provided around a swing shaft 38.
The swing member 38 is connected to the motor 42 via the link mechanism 40. The link mechanism 40 includes an interlocking member 43 and an L-shaped lever member 44, one end of the interlocking member 43 is connected to one end of the swinging member 37, and the other end of the interlocking member 43 is one end of the lever member 44. Connected to the department. The corner portion of the lever member 44 is fixed to the rotation shaft 45 that is rotated by the motor 42, and the other end portion of the lever member 44 is biased by the coil spring 46 so as to rotate in the counterclockwise direction in FIG. There is.

On the knitted fabric side of the cutter 34, a cutting thread holding member 47 composed of a pair of leaf springs 48, 49 provided on the shoulder of the knitting machine 11 is attached. As shown in FIG. 1 and FIG. 4, the cutting thread holding member 47 has two leaf springs 48 and 49 whose tip portions are curved in a direction in which they are separated from each other. 10 are pressed against each other with a pressing force capable of holding them against their tension.

The operation of the cutting yarn holding device of this embodiment is such that when the knitting yarn 10 is first cut, the yarn hooks 12 and 13 are used.
Means that the motors 14 and 15 rotate from the lower position of the yarn hooks 12 and 13 indicated by the two-dot chain line in FIG.
By the pinion 26 and the rack 22, the yarn hook 12,
13 rises. Then, the knitting yarn 10 engages with the hook portion 16 at a position shown above in the yarn hooks 12 and 13 shown by the chain double-dashed line in FIG. Where the yarn hook 1
When the yarns 2 and 13 rise, the knitting yarn 1
0 makes contact, and the knitting yarn 10 slides along this slope 18,
Further, as the yarn hooks 12 and 13 rise, the knitting yarn 10 comes into contact with the protruding piece 20 and the knitting yarn 10 slides into the hook portion 16. After this, the motors 14 and 15 reversely rotate, and the pinion 2
6, the yarn hooks 12 and 13 are lowered through the rack 22, and the knitting yarn 10 is engaged with the concave portion 17 of the hook portion 16 and pulled down. And the yarn hooks 12, 13
Moves to the position shown by the solid line in FIG. 2 and stops. In this state, the knitting yarn 10 is sandwiched between the hook portions 16 of the yarn hooks 12 and 13 and the spring member 28 as shown by the chain double-dashed line in FIG. Further, at this time, the knitting yarn 10 on the knitted fabric side is held between the leaf springs of the cutting yarn holding member 47. The yarn hooks 12 and 13 of this yarn gripping device can perform the above operations simultaneously or individually.

In this state, the movable blade 36 of the cutter 34 is in an open state, and the knitting yarn 10 pulled down by the yarn hooks 12 and 13 is sandwiched by the spring member 28, and the movable blade 36 and the fixed blade 35. Located between and. Then, the motor 42 operates, and the movable blade 36 swings clockwise in FIG. 3 through the link mechanism 40 against the biasing force of the coil spring 46, and cuts the knitting yarn 10. As a result, the knitted knitted fabric is separated from the knitting yarn 10.
At this time, the knitting yarn 10 on the knitted fabric side bounces due to its tension, but since the end portion is held by the cutting yarn holding member 47, the bounced yarn end does not get entangled with the member of the knitting machine. Then, by the knitting off, the yarn end of the knitting yarn 10 slips through the cutting yarn holding member 47 and drops downward together with the knitted fabric. Further, the movable blade 36 is swung to the original open position by the coil spring 46, and the hook portion 16 and the spring member 28 are moved.
The knitting yarn 10 held by is transferred to the next knitting operation.

According to the cutting yarn holding device of this embodiment, the end portion of the knitting yarn 10 is temporarily held by the cutting yarn holding member 47 when the knitted fabric is knitted, so that the yarn end bounces. The knitted fabric can be reliably knitted off without being entangled with the knitting machine.

Next, a second embodiment of the present invention will be described with reference to FIG. Here, the same members as those in the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted. In this embodiment, one holding piece 51 of the cutting thread holding member 50 is fixed to the knitting machine 11,
The other holding piece 52 is attached to the operating member 55 of the solenoid 54 so as to be movable in the horizontal direction. The solenoid 54 is fixed to the knitting machine 11 via a mount 56.

The operation of the solenoid 54 is such that the holding piece 52 is moved to the holding piece 51 on the fixed side to hold the knitting yarn 10 prior to the cutting of the knitting yarn 10 and the knitting fabric is cut off after the completion of the cutting and the solenoid 54 is operated. Release the holding operation of knitting yarn 10
Frees the yarn end and allows it to fall with the knitted fabric. This makes it possible to more reliably hold and release the yarn end of the knitting yarn 10.

The cutting thread holding device of the present invention is only required to be capable of temporarily holding the thread end even after cutting with a cutter, and the holding member may have a shape other than a leaf spring such as other resin or rubber. It may be an elastic member such as the above, or may be a member in which rod-shaped members are in contact with each other.

[0017]

The cutting yarn holding device of the flat knitting machine of the present invention is
Since the knitting yarn is held before the knitting yarn cutting operation,
Even if the yarn end bounces due to the cutting of the knitting yarn, the yarn end is not entangled with the member of the knitting machine. As a result, the knitting of the knitted fabric from the knitting machine can be made more reliable.

[Brief description of drawings]

FIG. 1 is a right side view of a cutting yarn holding device according to a first embodiment of the present invention.

FIG. 2 is a front view of the cutting yarn holding device according to the first embodiment of the present invention.

FIG. 3 is a front view of a cutter of the cutting yarn holding device according to the first embodiment of the present invention.

FIG. 4 is a front view of the cutting yarn holding device according to the first embodiment of the present invention.

FIG. 5 is a front view of a cutting thread holding device according to a second embodiment of the present invention.

[Explanation of symbols]

 10 Knitting yarn 28 Spring member (thread gripping device) 34 Cutter 47, 50 Cutting yarn holding member 48, 49 Leaf spring

Claims (1)

[Claims] 1. A yarn gripping device for gripping a knitting yarn connected to a knitted fabric from a yarn feeder in a standby position for drawing out the knitting yarn, and knitting from the yarn gripping device in association with a gripping operation of the yarn gripping device. A cutting yarn holding member that holds a knitting yarn that is continuous with the ground, and a knitting yarn that is between the yarn gripping device and the cutting yarn holding member, and cuts the post knitting yarn held by the yarn gripping device and the cutting yarn holding member. And a yarn cutting device that cuts the yarn on the knitted fabric side among the knitting yarns cut by the yarn cutting device is temporarily held by the cutting yarn holding member. Holding device.