JPS6250589B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn guide device for a flat knitting machine. The thread stretched on the sag or vibrates,
The purpose of this method is to prevent yarn breakage, which causes variations in yarn feeding tension, and furthermore, prevents uneven stitches from occurring.

In a flat knitting machine, when feeding yarn to the yarn guide hole 3 of a carrier 2 supported by a yarn guide rail 1 extending in the width direction of the machine, the yarn is fed from both ends of the knitting machine to the yarn guide hole of the carrier. There is a method shown in , and a method in which the yarn is fed into the yarn guide hole only from one end of the knitting machine. According to the former method, the two yarns 4 and 5 are aligned and fed through the yarn guide hole 3 of the carrier 2, but the yarn with the target count of 1/2 is fed from both sides until the carrier reaches the carrier. It will be fine if each is supplied, so thread 4,
The weight of No. 5 is 1/2 of the target count, but the total number of yarns on both sides of carrier 2 is twice the number of yarn guide holes.
When yarn is fed to the carrier 2 from both sides of the knitting machine, as the carrier 2 moves, the tension of the yarn on the anti-transition side becomes +, and the tension of the yarn on the transition side of the carrier 2 becomes -. If six types of threads are used, six carriers will be required, and there will be 12 threads on both sides of carrier 2, and if one carrier 2 is transferred, the threads of carrier 2 will be 5 vibrates (with a width of Figure 1 l) and comes into contact with another stationary, at least adjacent, carrier yarn (this yarn is not shown in Figure 1), causing yarn breakage and yarn feeding. This causes fluctuations in tension, etc., resulting in uneven stitches. According to the latter method, the total number of yarns is the same as the number of yarn guide holes, which is 1/2 of the former, but the yarn weight is double, and the yarn becomes slack between the carrier and the yarn guide at the end of the machine. The amount of vibration generated during the drooping and carrier transfer is large, and problems similar to the former are likely to occur.

Therefore, in the present invention, in order to prevent the occurrence of problems as in the conventional case, a fixed yarn guide provided at the end of the knitting machine table and a carrier can be moved to follow the movement of the carrier. The above drawbacks are eliminated by providing a movable yarn guide that supports the yarn between it and a fixed yarn guide at the end of the knitting machine table.

An embodiment of the device of the present invention will be described below with reference to the drawings. First, a first embodiment shown in FIGS. 2 to 4 will be described.

11 is a needle bed supported by a machine frame 12, and in the example shown in FIG.
are supported in close proximity. The thread guide rail 15 is attached to the machine frame 12 by means of supporting members 14, 14.
At least one pair of stoppers 16 and 17 are fixed to the thread guide rail 15 by appropriate means. A plurality of pairs of stoppers 16 and 17 can be provided as necessary. stopper 1
6 and 17 have a cam 18 on the top. A carrier 20 is slidably supported by the thread guide rail 15, and a thread guide hole 23 is provided in a thread guide rod 22 fixed at the center of a holder 21, which is the main carrier. 24,
Reference numeral 25 indicates thread holes for the threads 26 and 27. A recess 28 is provided in the upper part of the holder, into which a carrier entraining bolt 29 of a carriage (not shown) is engaged. Holder 21
A movable thread guide connecting bar 30 extending parallel to the thread guide rail 15 is loosely fitted to the thread guide rail 15, and movable thread guides 35 and 36 are fixed to both ends thereof. movable thread guide 35,
36 connects the base parts 37 and 38 to the thread guide rail 15, respectively.
The thread passage holes 41 and 42 are supported by the thread guide rods 39 and 40, respectively. The length of the movable thread guide connecting bar 30 is as follows:
It is desirable to set it to 1/2 of the length of 7 spaces. 43,4
4 is a fixed yarn guide provided at the end of the knitting machine table.

Next, the operation of the first embodiment will be explained. Second
The state shown in the figure shows a state in which the carrier 20 is stopped at the left end of the knitting machine stand due to the leftward movement of the carriage (not shown). Subsequently, as the carriage reverses and moves to the right, the carrier-carrying bolt 29 of the carriage descends the slope of the cam 18 of the stopper 16 and enters the recess 28 of the carrier 20, and the holder 21
and moves the carrier 20 to the right. At this time, since the holder 21 of the carrier 20 and the thread guide support bar 30 are loosely fitted, only the carrier 20 moves to the right as shown in FIG. 3, and the thread guide support bar 30 remains in the same position. are doing. That is, the thread 27 is supported by the thread passing hole 46 of the thread guide 44 at the end of the knitting machine table, the thread passing hole 42 of the movable thread guide 36, and the thread passing hole 23 of the carrier 20, and as the carrier 20 moves to the right, The distance between the thread passing holes 42 and 25 gradually decreases, and the vibration of the thread 27 between them also becomes smaller. When the holder 21 of the carrier 20 comes into contact with the side end 47 of the movable thread guide 36 (Fig. 4), the movable thread guide 36 is pushed by the carrier 20 and starts moving to the right, and the thread passing hole 42 and Proceed by gradually narrowing the intervals. As the movable thread guide 36 moves to the right, the movable thread guide 35, which is integrally constituted by the movable thread guide 36 and the thread guide connecting bar 30, starts moving to the right and gradually increases the distance from the fixed thread guide 43. go. and,
When the carriage bolt 29 engaged in the recess 28 of the carrier 20 comes into contact with the cam 18 of the stopper 17 and ascends the slope and disengages from the recess 28, the carrier 20 stops. At this time, just as if the carrier 20 were located at the left end of the knitting machine stand, the thread passing hole 42 of the movable thread guide 36 approaches the thread passing hole 46 of the fixed thread guide 44, and the carrier 20
The thread passing hole 24 of the fixed thread guide 43 and the thread passing hole 45 of the fixed thread guide 43
The thread 26 between the movable thread guide 3 and
It is supported by the threading hole 41 of No. 5.

In this way, in the first embodiment, one yarn guide connecting bar 30 having movable yarn guides at both ends is loosely fitted into the holder 21 of the carrier 20, so that the knitting machine on the left or right side of the carrier 20 One movable yarn guide can support the yarn that tends to hang down in the center of the knitting machine when it is located at the end of the machine.

A second embodiment is shown in FIGS. 6 to 9. Second
In this embodiment, structural parts that are the same as those in the first embodiment will be described with the same reference numerals.

In the second embodiment, one carrier is provided with two yarn guide connecting bars, each of which is provided with a movable yarn guide, and the yarn fed into the yarn guide hole of the carrier is supported by four movable yarn guides. It was designed to do so. The above two thread guide connecting bars 30, 3
The support structure of No. 1 is as follows.

A notch 32 is provided on the back of the holder 21 of the carrier 20.
A thread guide connecting bar 3 is provided in the notch 32.
0 and 31 are inserted so that they can freely slide. Movable thread guides 35 and 36 are screwed onto both ends of the movable thread guide connecting bar 30. The base portions 38 of the movable yarn guides 35 and 36 are slidably fitted to the yarn guide rail 15, which is the same as in the first embodiment, but the length of the movable yarn guide connecting bar 30 is the same as that of the first embodiment. It is longer than the embodiment, and has about 2/3 of the length between the stoppers 16 and 17. On the other hand, the movable thread guide connecting bar 31 has a length of about 1/3 of the length between the stoppers 16 and 17, and has movable thread guides 33 and 34 at both ends thereof. The movable thread guides 33 and 34 have the same shape, and the movable thread guide connecting bar 31 is fitted into the back notch 51 of the base 50.
The movable thread guide connecting bar 30 is loosely fitted into the notch 51.

Next, to explain its operation, FIG. 5 shows a state in which the carrier, after reaching the left end of the knitting machine, is reversed and moved slightly to the right. When the carrier 20 moves to the left end, the side surface of the movable thread guide 33 is pushed by the holder 21 of the carrier 20, the movable thread guide 35 is pushed by the movable thread guide 33, and both the movable thread guides 33 and 35 are moved to the stopper 16. The situation is approaching . In this state, the thread 27 is supported at two locations, the movable thread guides 34 and 36. The length of the movable thread guide connecting bars 30 and 31 is 2/2/2 of the length between the stoppers 16 and 17.
Since the length is 3.1/3, the yarn 27 is supported between the fixed yarn guide 44 at the end of the knitting machine and the carrier 20 at a length of 1/3. Next, carrier 2
0 moves to the right, the carrier 20 and the movable thread guide 34 come into contact, and as the carrier 20 moves, the movable thread guide 34 is pushed to the right, and at the same time, the movable thread guide 33 is also pushed through the movable thread guide connecting bar 31. Moving to the right, the movable thread guides 35, 33 widen their distance. In this state, when the carrier 20 moves further to the right, the movable thread guide 34 comes into contact with the same 36,
The space between the movable thread guides 33 and 35 is opened to the maximum. Next, when the carrier 20 moves to the right, the movable thread guides 34 and 36 move to the right while being in contact with each other, and the movable thread guide 35 moves to the right.
is separated from the stopper 16, and when the carrier 20 reaches the position of the stopper 17 and stops, the yarn guide connecting bars 30 and 31 are both located at the right end of the knitting machine table, and the yarn 26 is divided into three equal parts by the movable yarn guides 35 and 33. It will be hung in this position.

As mentioned above, in the second embodiment, the yarn stretched between the carrier and the fixed yarn guide at the end of the knitting machine can be supported at multiple locations, and the length of the yarn between the yarn guides can be shortened. Therefore, the amplitude of vibration of the yarn during yarn feeding can be reduced.

As explained in detail above, in the device of the present invention, the thread guide rail provided in parallel with the needle bed gap,
A pair of stoppers is fixed, and a carrier having a thread guide hole is slidably supported on a thread guide rail between the stoppers, and the carrier has movable thread guides extending parallel to the thread guide rail and at both ends. The movable thread guide connecting bar is loosely fitted to the movable thread guide, and the carrier and the thread guide are positioned so that the carrier and the movable thread guide can come into contact when the carrier moves on the thread guide rail. Because of this, the yarn fed into the carrier's yarn guide hole from the fixed yarn guide at the end of the knitting machine table is always supported by the movable yarn guide, and the movable yarn guide moves left and right as the carrier moves. The maximum length between the supporting points of the movable thread guide can be less than 1/2 of the machine width, and the shorter the length between the supporting points of the thread, the less the thread vibration or contact friction between many adjacent threads. etc. can be prevented from occurring. This can prevent fluctuations in yarn feeding tension and prevent irregularities in stitches from occurring.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional device, and FIGS. 2 to 4 are front views of a first embodiment of the device of the present invention, each showing a moving state of a carrier. 5 to 9 show a second embodiment of the device of the present invention, in which FIG. 5 is a front view, FIG. 6 is a partially enlarged front view, and FIG.
Figures to Figures 9 are the - line and - line of Figure 5, respectively.
It is a sectional view taken along the line and - line. 11...needle bed, 13...needle gap, 15...thread guide rail, 16, 17...stopper, 20...carrier, 30, 31...movable thread guide connecting bar,
33, 34, 35, 36...Movable thread guide.

Claims (1)

[Claims] 1. On the thread guide rail installed parallel to the needle bed gap,
A pair of stoppers is fixed, and a carrier having a thread guide hole is slidably supported on a thread guide rail between the stoppers, and the carrier has movable thread guides extending parallel to the thread guide rail and at both ends. A flat knitting machine comprising a movable yarn guide connecting bar which is loosely fitted, and the carrier and the yarn guide are positioned so that the carrier and the movable yarn guide can come into contact when the carrier moves on the yarn guide rail. Thread guiding device.