JPS6317145B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn end processing device during yarn switching in a flat knitting machine.

A pair of front and rear needle beds are provided with their tops facing each other, and a knitted fabric is knitted into a bag shape using the front and rear needle bed, but it is not possible to switch the knitting yarn during knitting of this knitted fabric. There is. For example, when knitting a glove, the finger, lace, and wrist sections are knitted using the same main yarn. When the wrist section is knitted, the opening section is knitted in several courses using the opening yarn to make the glove. Complete. For example, heat-shrinkable yarn is used for the opening knitting yarn, which is shrunk by heat treatment to make it difficult to unravel, and has the effect of preventing damage from the opening knitting part. .

Also, striped patterns can be created by changing the yarn used in the middle of knitting the main part of the glove, but when changing the yarn used in the middle of knitting in this way, it is necessary to treat the ends of both the new and old yarns. became a problem.

The above-mentioned yarn end treatment was carried out by machines or by hand, such as by knitting or pulling the yarn into the knitted fabric, but there are problems with efficiency when doing it manually.
In addition, when using mechanical means, the yarn ends are blown up with pressurized air and when the next course is knitted, the yarn ends are buried in the knitted fabric along with the yarns that will be knitting the next course. , generation of pressurized air and other equipment are required.

In the device of the present invention, the end of the old yarn is knitted into the fabric using the elasticity of the yarn itself and the elastic force of the elastic body with which the yarn is in contact, without using fluid pressure such as pressurized air. This method attempts to prevent the yarn ends from coming out of the knitted fabric by knitting with the old yarn ends attached to the new yarns when the new yarn is fed.

Next, an example of the implementation of the yarn end processing device of the present invention will be described with reference to the drawings.

The yarn end treatment device 1 of the present invention is provided on either the left or right of the opposed tops of a flat knitting machine, or both, of a flat knitting machine having a pair of front and rear needle beds 2 and 3 with their tops facing each other in a chevron shape. That is, they are screwed onto sinker bed mounts 4 and 5 which are fixed onto the front and rear needle beds 2 and 3.
The yarn end processing device 1 mainly includes scissors 6, a yarn gripping guide member 7, and a looper 8.

Reference numeral 10 denotes a scissors board, which is screwed and fixed to the sinker bed mounting base 4, and has a scissors sliding plate 11 in a guide groove on its lower surface.
are slidably fitted. A rising part 12 is provided at the end of the scissors sliding plate 11, and a spring 14 is placed between it and a pin 13 planted on the scissors base plate 10, so that the scissors sliding plate 11 is attached to the left side in FIGS. 1 and 2. to strengthen A grooved cam 15 is provided on the scissors sliding plate 11, and a cam follower 17 provided on a part of a movable blade 16 of the scissors 6, which will be described later, is fitted therein. The scissors 6 include a fixed blade 18 fixed to the lower surface of a scissor base plate 10 by screws 19, and a movable blade 1 rotatably supported by a screw shaft 20.
6. It consists of a movable blade pressing spring 21 which is in pressure contact with the upper surface of the movable blade 16 and fixed to the scissors base plate 10 with a screw 9, and when the scissors sliding plate 11 slides to the left (second
(Figure), the movable blade 16 is closed and the movable blade 16 is opened when sliding to the right. On the upper surface of the movable blade 16, there is provided a thread gripping guide member 7 which presses against the upper surface of the movable blade 16 in the same way as the movable blade pressing spring 21. The thread gripping guide member 7 is constructed by stacking the thread guide plate 23 on the thread holding plate 22 via the spacer 24 and attaching it to the scissors base plate 10 with screws 25.
It is fixed to the fixed blade 18 in a state where it is sandwiched.

The thread presser plate 22 has thread presser protruding pieces 26 and 27, which are in contact with the upper surface of the movable blade 16 and, as will be described later, hold the yarn end between them and the movable blade 16 when cutting the thread 30. Nip.

The thread guide plate 23 is made of an elastic plate-like body, and has an elastic protruding piece 28 on a part thereof, and an inclined part 29 is formed on the side edge of the elastic protruding piece 28. As will be described later, this elastic projecting piece 28 functions as a spring that flips the yarn end toward the knitted fabric when the nip at the yarn end is released.

The base is inserted into the notch 35 of the scissor base plate 10, and the looper 8 is swingably supported by a screw shaft 37. A cam follower 38 is provided at the base end of the looper 8, and a hook 39 is provided at the tip. A looper drive cam 40 is slidably provided on the upper surface of the scissors base plate 10 and is integrated with the scissors sliding plate 11, so that as the scissors sliding plate 11 slides, the looper drive cam 40 also slides at the same time.

The looper drive cam 40 is formed with a rising portion 41, and the rising portion 41 is provided with a cam groove 42, into which the cam follower 38 of the looper 8 is fitted. 43 is a wire for moving the scissors sliding plate 11.

Next, the operation of the device of the present invention will be explained using an example of thread switching from the wrist part to the mouth knitting part when knitting a glove.

The glove is knitted starting from the tip of the finger pocket on the little finger side, and is knitted into a bag shape by the front and rear needle beds 2 and 3.
After forming the fingers, the upper part of the palm, the thumb, the lower part of the palm, the wrist, and the mouth part are arranged. It is now assumed that the knitting up to the wrist section has been completed, and the knitting continues on to the opening knitting section.

In order to knit the final course of the wrist part 46 of the glove 45 with the needles (not shown) of the front needle bed 2, the main thread 4 is attached to the needles (not shown) of the front needle bed 2.
Carrier 48 that fed yarn 7 is needle bed 2
It stops on the left side (the thumb side of the glove) as shown in Figure 1.

Next, in order to knit several courses of the opening knitting part, the opening knitting yarn carrier 49, which had been stopped at the end on the little finger side of the glove, starts moving to the left. Opening knitting yarn 3 of opening knitting yarn carrier 49
0 is held at its end by the thread gripping guide member 7 of the thread end processing device 1. That is, the ends of the opening knitting yarns 30 are nipped between the movable blade 16 of the scissors 6 and the thread pressing protruding piece 27 of the thread pressing plate 22, and as the opening knitting yarn carrier 49 moves to the left, the opening knitting yarns 30 is knitted with yarn fed to the needles (not shown) of the front needle bed 2,
As shown in FIG. 2, the ends of the opening knitting yarns 30 are crossed between the glove 45 and the yarn presser plate 22. As described above, the end of this thread is nipped between the upper surface of the movable blade 16 and the lower surface of the thread presser protruding piece 27 of the thread presser plate 22, and the thread connected to the knitted fabric of the glove is It extends from the inclined portion 29 of the plate 23 to the upper surface of the elastic protruding piece 28 to the knitted fabric. As is clear from FIG. 1, the thread between these threads is bent in an ``H'' shape with the elastic protruding piece 28 of the thread guide plate 23 at the highest position and the elastic protruding piece 28 at the top. Elastic protruding piece 28
Since this part has elasticity, the opening knitting yarn 30 in this part receives an upward repulsive force from the elastic projecting piece 28.
Then, when the opening knitting yarn carrier 49 makes one round trip and starts moving to the left again to feed the yarn to the needles of the front needle bed 2, the wire 43 is pulled by a mechanism (not shown), causing the scissors sliding plate 11 to move as shown in FIGS. Slide to the right in Figure 2. As a result, the movable blade 16 of the scissors 6, whose cam follower 17 is fitted into the grooved cam 15 of the scissor sliding plate 11, pivots clockwise in FIG. 2 about the screw shaft 20 to open the blade.

As a result, the contact between the upper surface of the movable blade 16 and the lower surface of the thread presser protruding piece 27 of the thread presser plate 22 is broken, so that the end of the opening knitting yarn 30 that was nipped at this part is released, and at the same time, the elasticity of the thread guide plate 23 is released. Due to the elasticity of the protruding piece 28, the yarn end is repelled upward. Also, opening knitting thread 3
If an elastic yarn is used for the yarn, its repulsive force will be even greater, and the yarn end will fly in the direction of the glove opening. For this reason, the flying yarn end becomes entangled with the flute knitting yarn 30 from the flute knitting yarn carrier 49, which is running to the left for knitting the second course of the flute knitting part by the front needle bed 2, and the flute knitting part becomes tangled. When the opening knitting yarn is fed to the front needle bed 2 for knitting, the yarn ends are also knitted at the same time, so that the yarn ends do not protrude outside the knitted fabric.

The knitting of the opening knitting part in which the yarn ends at the beginning of knitting are treated as described above is performed by knitting the opening knitting yarn carrier 4 after knitting several courses.
The process ends when the thread 9 reaches the thread end processing device 1 on the little finger side. Then, by further pulling the wire 43, the scissors sliding plate 11 is moved to the right, and the cam follower 17 is moved within the groove cam 15, thereby completely opening the movable blade 16, and at the same time, the movable blade 16 is completely opened due to the movement of the looper drive cam 40. The movement of the cam follower 38 raises the looper 8 and raises the hook 39 higher than the auxiliary yarn 30 extending from the opening yarn carrier 49 to the glove 45, as shown by the dash-dot line in FIG. Next, when the tension on the wire 43 is released, the scissor sliding plate 11 moves to the left due to the contraction force of the spring 14, and the looper 36 is moved counterclockwise via the cam follower 38 fitted into the cam groove 42 of the rising portion 41. Turning in the direction of the needle, the hook 39 locks the opening knitting thread carrier 49 and the auxiliary thread 30 connected to the little finger side of the opening knitting part of the glove 45, and pulls it down into a V-shape and partially cuts it into the movable blade of the scissors 6. 16 and the fixed blade 18 into the opening. In this state, when the scissor sliding plate 11 moves further to the left, the movable blade 16 of the scissors 6 closes and cuts the opening knitting yarn 30. At the same time, the cut yarn end connected to the opening knitting yarn carrier 49 is connected to the upper surface of the movable blade 16 and the thread It is nipped between the lower surface of the thread presser protruding piece 27 of the presser plate 22. In addition, at the same time as cutting, the thread end that continues to the little finger side of the opening knitting part is attached to the hook 3.
Since the tension caused by 9 is released, the glove side rebounds.

This final yarn end is later contracted by heat treatment when the opening knitting yarn is a heat-shrinkable yarn, thereby shrinking the opening knitting part, and the yarn end is buried in the shrunken knitted fabric.

The main thread 4 continues between the wrist part and the main thread carrier 48 which has been stopped on the thumb side of the glove 45 (on the left side in Figure 1) after the knitting of the wrist part by the above-mentioned main thread 47 has been completed.
Reference numeral 7 indicates an opening knitting yarn 30 fed from an opening knitting yarn carrier 49 that runs to the left from the little finger side (right side in FIG. 1) of the glove 45 and reverses at the thumb side for knitting the opening section.
It is attached to the top and knitted into the opening part.

This can be achieved either by a conventional device using a pressurized air flow or by providing the device of the present invention on both sides of the glove. In short, when the opening knitting yarn carrier 49 feeds the yarn for knitting the second course of the opening knitting part on the right side of the glove, the end of the opening knitting yarn is knitted, and the carrier 48 and the glove 45
The main yarn 47 that continues between the two is cut by a yarn end processing device (not shown), and the yarn end that connects to the carrier 48 is grasped with scissors or a thread gripping member (not shown), and the free yarn end that connects to the cut glove is cut. Knitting yarn carrier 49
When it is reversed on the left side and moves to the right, it is attached to the opening knitting yarn and knitted into the opening knitting part.

As detailed above, in the device of the present invention, when the yarn is switched from knitting the wrist section using the main yarn to knitting the opening section, the yarn end of the new yarn that has been switched and knitted is nipped, The yarn extending from the nipped point to the knitted fabric comes into pressure contact with the yarn guide plate, so when the nip is released, the yarn end flies in the direction of the knitted fabric due to the elasticity of the yarn guide plate. Therefore, air is especially blown to make the yarn end fly. There is no need to install a mechanism, and the flying yarn ends can be easily added to the yarn being fed for the next course knitting, and the yarn ends when the yarn is switched can be automatically knitted into the knitted fabric. can be organized into.

[Brief explanation of the drawing]

The drawings show an embodiment of the yarn end processing device of the present invention, in which Fig. 1 is a front view, Fig. 2 is a plan view of the same, Fig. 3 is a rear view of the scissors portion, and Fig. 4 is a side view of the same. , 5th
6 is a plan view of the thread guide plate, FIG. 6 is a plan view of the thread presser plate, and FIG. 7 is an exploded perspective view of the presser plate and the thread guide plate. 8... Looper, 10... Scissors board, 16... Movable blade,
18... Fixed blade, 21... Movable blade presser spring, 22... Yarn presser plate, 23... Thread guide plate, 24... Spacer, 2
6, 27... Thread presser protruding piece, 28... Elastic protruding piece, 3
9...Futsuk, 48, 49...Carrier.

Claims (1)

[Claims] 1. A movable blade is sandwiched between a fixed blade and a movable blade presser spring and provided on the scissor base plate, and the thread presser protruding piece of the thread presser plate and the elasticity of the thread guide plate are attached to the surface of the movable blade that contacts the movable blade presser spring. A spacer is interposed between the yarn holding plate and the yarn guiding plate, and the two plates are attached to the scissor base plate, and the yarn extending to the knitting yarn carrier is attached to the side of the opening of the movable blade. A yarn end processing device at the time of yarn switching in a flat knitting machine, which is provided with a looper made of a swinging rod having a hook at the tip for guiding the yarn into an opening of a movable stopper blade.