JPH0772386B2 - Movable sinker in flat knitting machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sinker for holding a sinker loop at a tip of a needle bed when a needle-supplied yarn is pulled down by forming a needle loop in a flat knitting machine.

[0002]

2. Description of the Related Art When knitting a knitted fabric in a knitting machine, the yarn supplied to the hook of a needle is drawn into an old needle loop which is locked to the shank of the needle as the needle is pulled down, and a new needle loop is formed. A needle loop is made, but when the needle is pulled down, the old needle loop, which is locked to the shank of the needle, is engaged with the sinker loop in order to prevent the needle loop from moving together with the needle, and the old needle loop moves. A sinker that prevents this may be used.

A plate-like member fixed to the tip of the needle bed at the same pitch as the needle and positioned between the needles. When the needle is pulled up, a sinker loop is locked at the tip edge portion of the needle, and the tip edge of the sinker is fixed. The distance between the needle and the hook of the needle determines the size of the needle loop. Therefore, in order to increase the stitch count, it is necessary to increase the amount of pulling down of the needle by that amount, but if the amount of pulling down is increased, it takes time to pull down the needle, and the knitting speed of the knitted fabric is reduced.

Further, in a knitting machine using a compound needle, a situation may occur in which a slider advances into the knitting yarn supplied and hooks the knitting yarn.

For the purpose of coping with the above situation, when a needle hook receives a yarn, the knitting yarn is guided to the hook, and the sinker advances between the needles so as to press the sinker loop. Then, a sinker has been developed in which the front edge portion of the sinker is projected and the sinker locking portion is locked to the sinker loop.

The above-mentioned sinker has a plate-like body swingably supported at the tip of the needle bed, and has a guide portion for guiding the knitting yarn supplied to the tip thereof, and a sinker loop is provided at the lower portion thereof. A locking portion for stopping is provided, and swinging motion is performed in synchronization with the forward and backward movement of the needle to guide the yarn feeding and lock the sinker loop.

The above-mentioned sinker repeatedly swings as the needle moves back and forth, and since it is a thin plate, it is axially supported in a state where it is fitted in a slit provided at the tip of the needle bed. In order to stop, a part of the sinker is made as an elastic braking piece, and the braking piece is brought into contact with the wall surface of the slit to generate frictional resistance.

However, since the sinker is formed by stamping out a thin plate, the portion of the braking piece has the same thickness as the other portions, so the thickness of that portion is thinned and Some bending must be provided to facilitate contact with the wall of the slit. The above-mentioned processing requires extremely difficult labor, and it is difficult to increase the accuracy thereof, and it is particularly difficult to bend the braking piece to make the friction resistance of a large number of individuals the same.

[0009]

SUMMARY OF THE INVENTION In view of the above points, the present invention provides a sinker capable of preventing delusion without processing and providing a portion for performing a braking action on the sinker itself. The purpose is to

[0010]

Means for Solving the Problems A thin plate-shaped movable sinker is inserted and supported by superimposing a disc-shaped spring coaxially on its side surface so that the movable sinker can swivel in a notch provided at a tip of a needle plate constituting a needle bed. A frictional resistance was generated on the wall surface of the movable sinker and the notch or the side surface of the needle bed.

[0011]

With the elasticity of the disc-shaped spring provided on the shaft supporting portion of the sinker in contact with the sinker, the sinker presses the sinker against the wall surface of the notch or the wall surface of the needle plate in the notch provided at the tip of the needle plate. A frictional resistance is generated between the sinker and the wall surface, and the frictional resistance prevents the sinker from moving.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the movable sinker of the present invention will be described below with reference to the drawings.

The movable sinker 1 of the present invention is swingably supported by a sinker support wire 4 on the tip of a needle plate 3 assembled to a needle bed 2. That is, a plurality of grooves 5 are cut in parallel on the needle bed 2 at predetermined intervals, the needle plates 3 are fitted into the grooves 5, and the intervals between the adjacent needle plates 3 and 3 become the needle grooves 6, A needle 7 is slidably inserted, and a strip 8 prevents the needle 7 from escaping.

The needle plate 3 is formed by stacking a first needle plate 9 and a second needle plate 10,
The notch 11 is provided at the tip of the first needle plate 9, the sinker 1 is inserted into the notch 11, and the sinker support wire 4 is provided through the needle bed 2 and the needle plate 3.
The sinker 1 is swingably supported by. The sinker 1 has a circular recess 13 formed around a support wire insertion hole 12 for inserting the sinker support wire-4. The recessed portion 13 is for fitting the disc-shaped spring 14, and the engagement recesses 15 are formed on both sides of the circular recessed portion 13, and the engaging pieces 16 protruding on both sides of the disc-shaped spring 14 are engaged with the recessed portion 15.
And the disc-shaped spring 14 is fitted into the recessed portion 13. The disc-shaped spring 14 has an insertion hole 17 at the center for inserting the sinker support wire 4. Then, when the movable sinker 1 is inserted into the notch 11 of the needle plate 9 with the disc-shaped spring 14 fitted in the recess 13 of the movable sinker 1, the wall surface 18 of the notch 11 and the needle plate adjacent thereto The movable sinker 1 and the disc-shaped spring 14 are sandwiched between the wall surface 19 of 10 and the support spring 4 by inserting the support wire 4 into the support wire insertion holes 12 and 17 of the movable sinker 1 and the disc-shaped spring 14. When 1 is swingably supported, its delusion is prevented.

As shown in FIG. 2, the movable sinker 1 has an angularly projecting portion 20 and a swing arm 21.
The leading edge of the thread guide edge 22 and subsequent angular protrusions
By providing the protrusion 23 on the lower edge of 20, the knitting yarn engagement recess
Forming 24. Then, the stopper 25 is further projected to a position closer to the support wire insertion hole 12 than the knitting yarn engaging recess 24. The swing arm 21 is swung in a clockwise or counterclockwise direction in FIG. 2 about a sinker support wire 4 by a cam (not shown) provided in a carriage (not shown).

As described above, the rocking arm 21 can be rocked directly by a cam, or can be rocked by abutting the cam on the butt of the jack via a jack locked to the head of the rocking arm. Either dynamic movement may be performed.

Now, when the angular portion 20 is raised and the needle 7 is in the retracted position in the state shown by the chain double-dashed line in FIG.
Suppose the following course is organized. At that time, the oscillating arm 21 is oscillated in the counterclockwise direction by the operation of the cam on the carriage (not shown), the stopper 25 abuts on the front end 26 of the needle bed 2, and accurate positioning is performed. It takes the position shown by the solid line, and the needle 7 starts to advance.
Then, the yarn supply member (not shown) receives the yarn supply of the knitting yarn on the open hook of the needle 7, and the yarn guide edge 22 guides the knitting yarn, so that the needle 7 retracts and knocks over.
At this time, the loop 27 of the already knitted fabric is held by the knitting yarn engaging recess 24.

When the movable sinker 1 is rocked by a cam (not shown) on the carriage or when knitting, the movable sinker 1 has a wall surface of a notch 11 of a needle plate 9 due to an elastic force of a disc spring 14. Since both 18 and the wall surface 19 of the needle plate 10 are in pressure contact with each other, their positions are always maintained accurately without delusion.

[0019]

According to the movable sinker of the present invention, a thin plate-shaped movable sinker and a disc-shaped spring are coaxially superposed on a side surface of the movable sinker in a notch provided at a tip of a needle plate constituting a needle bed so as to be pivotable. Since it is inserted and supported by causing frictional resistance between the movable sinker and the wall surface of the notch or the side surface of the needle bed, the needle plate is always in contact with the wall surface while maintaining pressure contact with the wall surface. Therefore, there is no delusion during knitting or when it is rocked by a cam, and it is possible to hold the knitted fabric and guide the yarn supply constantly at all times, and knit a knitted fabric with a uniform degree. be able to.

Further, since the plate-shaped elastic body is used,
It is easy to make the elasticity uniform, and the movement during rocking can be made uniform also from this point.

[Brief description of drawings]

FIG. 1 shows a needle bed provided with a movable sinker of the present invention, where A is a vertical side view and B is a plan view with a band removed.

2A and 2B show a movable sinker of the present invention, in which A is a side view, B is a sectional view taken along the line BB in FIG. A, and C is a sectional view taken along the line CC in FIG.

FIG. 3 shows a disc spring, where A is a side view and B is
FIG. 6 is a sectional view taken along line BB in FIG.

[Explanation of symbols]

 1 Movable sinker 2 Needle bed 11 Notch 19 Needle plate wall 14 Disc spring

Claims (1)

[Claims] 1. A thin plate-shaped movable sinker and a disc-shaped spring are coaxially stacked and inserted into and supported by a notch provided at a tip of a needle plate constituting a needle bed so as to be pivotable. Movable sinker in a flat knitting machine in which frictional resistance is generated on the wall surface of the movable sinker and the notch or the side surface of the needle bed.