JP2008101309A - Sinker device of flat knitting machine and yarn guide spacer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sinker of a flat knitting machine, capable of preventing sway of a yarn guide spacer, and to provide the yarn guide spacer. <P>SOLUTION: A sway brace of a yarn guide spacer 15 is achieved by providing an extension part 15a, knitting yarn drop preventions 15a and 15b and an advancing part 15d. The advancing part 15d advances from the middle of the extension part 15a in the direction of a needle groove 16a i.e. in the direction receeding from a comb gap 18 and is nipped at both sides with needle plates 16. A step part 12b is formed on the upper surface of a needle bed 12 and at a part disposed with the extension part 15a and the advancing part 15d. The step part 12b can be easily formed by longitudinally cutting the needle bed 12 along the comb gap 18. By making both side end edges of the advancing part 15d abut on an end 16d of the needle plate 16 with the extension part 15a, sway can be surely controlled. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a sinker device for a flat knitting machine that includes a movable sinker plate that swings forward and backward with respect to a tooth opening, and that can prevent a knitting yarn from being caught in a guide groove of a sinker plate provided on a needle bed. The present invention relates to a yarn guide spacer.

Conventionally, on the needle bed of a flat knitting machine, a sinker is disposed between a plurality of knitting needles arranged side by side so as to advance and retreat in the mouth. The basic function of the sinker is to form a sinker loop together with a needle loop by the knitting needle when the knitting needle draws the knitting yarn. When the stitch loop composed of the needle loop and the sinker loop is knocked over from the hook of the knitting needle, it becomes an old loop and hangs down below the tooth opening to form a knitted fabric. When knitting a knitted fabric by sequentially forming stitch loops at the mouth, there is a risk that the old loop will rise again as the knitting needles advance into the tooth opening, which may hinder the knitting of the knitted fabric. In order to prevent sticking up, a sinker device is used in which the sinker is a movable sinker plate, and the spring is biased so that the arm portion that has advanced to the mouth of the sinker plate swings. The knitting yarn holder provided at the tip of the sinker plate on the tip side of the sinker plate biases the old loop so that it pushes the old loop downward, so that the old loop rises when the knitting needle forms a new stitch loop. Can be prevented.

However, in a movable sinker device in which the sinker swings, it is necessary to provide a guide groove for guiding the swing of the sinker plate at the tip of the needle bed on the side of the mouth. When using a thin knitting yarn, the knitting yarn may fall into the gap between the guide groove and the sinker plate. The present applicant has disclosed a technique of providing a member having a knitting yarn fall prevention portion in order to prevent the knitting yarn from falling (see, for example, Patent Document 1 and Patent Document 2).

FIG. 4 shows a schematic configuration of a conventional sinker device 1 having a knitting yarn dropping portion in a simplified cross section near the tooth mouth, based on FIG. 19 described as the prior art in Patent Document 2. The sinker device 1 is provided in the vicinity of the tip of the mouth of the needle bed 2 of the flat knitting machine. A needle plate (not shown) is provided on the needle bed 2 at a constant pitch. A needle groove is formed between the needle plates, and the knitting needle 3 is accommodated in the tooth groove so as to be able to advance and retract. A sinker plate 4 is disposed between the knitting needles 3. A guide groove 2a is provided at the tip of the needle bed 2 at the tip of the mouth of the needle bed 2 in order to swing the tip of the sinker plate 4 within the mouth. Since the sinker plate 4 swings and displaces along the guide groove 2a, it is necessary to provide a certain gap between the guide groove 2a and the sinker plate 4. A yarn guide spacer 5 is disposed between the sinker plate 4 and the knitting needle 3, and an extending portion 5 a is provided near the tip of the yarn guide spacer 5. The extending portion 5a extends so as to cross the bottom of the path where the knitting needle 3 advances to the tooth opening, and the proximal side end and the distal end side measuring end bend along the side surface of the adjacent sinker plate 4, The knitting yarn fall prevention part 5b and the knitting yarn fall prevention part 5c are formed. The knitting yarn fall prevention portions 5b and 5c are opposed to each other with a small interval without contacting the adjacent sinker plate 4. Only one side of the knitting yarn drop preventing portions 5b and 5c may be provided.

FIG. 5 shows an appearance of a yarn guide spacer 5 described as a support plate in Patent Document 1. The yarn guide spacer 5 is formed of a thin metal plate material, and the main portion is accommodated in a portion where the thickness of the needle plate is reduced. The main body portion above the portion where the extension portion 5a and the knitting yarn fall prevention portions 5b and 5c are formed by the yarn guide spacer 5 has a function of guiding the knitting yarn at the tip of the mouth side.
Japanese Patent Laid-Open No. 6-184889 JP 2006-188775 A

  In FIG. 4, a gap is provided between the side surface of the yarn guide spacer 5 and the side surfaces of the knitting yarn drop preventing portions 5b and 5c and the sinker plate 4 so that the swinging of the sinker plate 4 is not hindered. Yes. For this reason, in the yarn guide spacer 5, the portion where the extension portion 5 a and the knitting yarn fall prevention portions 5 b and 5 c are provided is supported by the extension portion 5 a which is only in contact with the upper surface of the needle bed 2. It is only done for. Since the yarn guide spacer 5 is formed of a thin metal plate material, if the knitting yarn is guided at the tip of the main body portion at the mouth of the main body during knitting, the yarn guide spacer 5 swings to the side due to the reaction force due to the tension of the knitting yarn. There is a possibility that the side surface of the knitting yarn fall preventing portion 5b may come into contact with the sinker plate 4 that is juxtaposed at a slight interval. When the side surface of the yarn guide spacer 5 comes into strong contact with the sinker plate 4, there is a resistance to swinging of the sinker plate 4, and the press of the knitted fabric by the spring biasing becomes worse, which may affect the finish of the knitted fabric. The yarn guide spacer 5 may swing toward the knitting yarn fall prevention part 5c. In this case, the knitting yarn drop preventing portion 5c comes into contact with the side surface of the sinker plate 4 and hinders the swinging of the sinker plate 4. The degree of deflection of the yarn guide spacer 5 depends on the rigidity.

  In a flat knitting machine, there is a convention in which the arrangement pitch of the knitting needles 3 is represented by a gauge corresponding to the number of knitting needles 3 arranged within 25.4 mm (1 inch). When the gauge becomes finer, the knitting member disposed on the needle bed 2 must be thinned, and naturally the plate thickness of the yarn guide spacer 5 is also thinned. If the thickness of the yarn guide spacer 5 is reduced, the rigidity becomes more disadvantageous.

  An object of the present invention is to provide a sinker device for a flat knitting machine and a yarn guide spacer capable of preventing the deflection of the yarn guide spacer.

In the present invention, a plurality of needle plates are erected at a predetermined pitch on the needle bed,
Needle grooves for accommodating the knitting needles so as to be movable back and forth with respect to the mouth are formed between the needle plates, respectively.
A movable sinker plate disposed between the needle grooves swings forward and backward with respect to the tooth opening along a guide groove formed at the tip of the needle bed on the tooth opening side,
In the sinker device of a flat knitting machine in which the tip of the mouth of the yarn guide spacer provided side by side on the side of the sinker plate is extended to the tip of the needle bed to provide a knitting yarn fall prevention part,
The extending part extended from the yarn guide spacer is a sinker device of a flat knitting machine characterized in that it has an advancing part that advances in a direction away from the mouth and is sandwiched between needle plates.

Further, in the present invention, the tip end portion of the needle bed on the tip side accommodates the extension portion and the advance portion of the yarn guide spacer, and the surface of the extension portion and the advance portion of the yarn guide spacer and the needle at the time of accommodation. It has a step part which makes the advance and retreat of a knitting needle smooth between the bottoms of a slot.

Further, in the present invention, the advance portion of the yarn guide spacer advances from the middle of the edge of the extension portion between the needle plates,
The end of the extension part or the knitting yarn fall prevention part on both sides of the advancing part is in contact with the ends of the needle plates on both sides sandwiching the advancing part.

In the present invention, a plurality of needle plates are erected at a predetermined pitch on the needle bed,
Needle grooves for accommodating the knitting needles so as to be movable back and forth with respect to the mouth are formed between the needle plates, respectively.
A flat knitting machine in which a movable sinker plate disposed between the needle grooves moves forward and backward with respect to the tooth mouth along a guide groove formed at the tip of the needle bed on the tooth mouth side,
In the yarn guide spacer disposed on one side of the sinker plate and extending the tip of the needle bed to the tip of the needle bed to provide a knitting yarn fall prevention part,
It is a yarn guide spacer characterized by having an advancing portion that advances from the extending portion in a direction away from the tooth opening so as to be sandwiched between the needle plates.

According to the present invention, in a movable sinker device in which the sinker plate swings with respect to the mouth, the knitting yarn in the gap between the guide groove provided on the needle bed and the sinker plate is dropped and bitten. The yarn guide spacer can be prevented by a knitting yarn fall preventing portion provided by extending the tip of the mouth of the yarn guide spacer to the tip of the needle bed. From the extended part that is extended from the yarn guide spacer to form the knitting yarn fall preventing part, the advanced part advances in a direction away from the tooth opening. Since the advance portion is sandwiched between the needle plates, the yarn guide spacer can be restrained, and the yarn guide spacer can be prevented from swinging due to the knitting yarn during knitting.

Further, according to the present invention, a step portion is provided in the vicinity of the tip of the needle bed on the side of the mouth to accommodate the extending portion and the advancing portion of the yarn guide spacer to smoothly advance and retract the knitting needle. By accommodating the extension part and the advance part of the yarn guide spacer in the step part, the step between the extension part and the advance part of the yarn guide spacer and the bottom part of the needle groove can be eliminated.

Further, according to the present invention, the extending portion of the yarn guide spacer is in contact with the end of the needle plate that sandwiches the advancing portion on both sides of the advancing portion, with the edge in the direction away from the mouth opening. Shaking can be prevented more reliably.

Furthermore, according to the present invention, it is used for a sinker device of a flat knitting machine to prevent the knitting yarn from dropping into a gap between the sinker plate of the movable sinker and the guide groove of the needle bed, and the knitting yarn during knitting It is also possible to prevent shake due to.

  FIG. 1 shows a configuration of a main part of a sinker device 11 as an embodiment of the present invention. (A) shows a partial planar configuration in the vicinity of the tip of the needle bed 12, and (b) shows an enlarged view of a portion intended to prevent steadying. In order to accommodate the knitting needle 13, sinker plate 14, and yarn guide spacer 15 on the needle bed 12, needle plates 16 are arranged in parallel at a pitch corresponding to a gauge as a flat knitting machine. The needle bed 12 is provided with a groove for inserting the lower side of each needle plate 16. The knitting needle 13 is accommodated in a needle groove 16a formed between the needle plates 16, and can be slidably displaced in the left-right direction in the figure. As will be described later, the sinker plate 14 is integrated with a spring portion 14a, and the tooth mouth 18 side for knitting the knitted fabric upon receiving the yarn 17 is urged downward in the drawing. The vicinity of the tip of the needle plate 16 on the mouth side 18 becomes a thin portion 16b in which the plate thickness decreases, and the sinker plate 14 and the yarn guide spacer 15 are accommodated in the space formed by the reduction in the plate thickness.

  The sliding displacement of the knitting needle 13 in the needle groove 16a enables the needle loop of the stitch loop to be formed by the drawing of the knitting yarn 17 by the hook 13a provided at the end of the tooth opening 18 of the knitting needle 13. When the needle loop is formed by the knitting yarn 17, a sinker loop is also formed on the tip side of the sinker plate 14. The yarn guide spacer 15 guides the knitting yarn 17 when the stitch loop is formed, and the knitting yarn 17 falls into a gap between the guide groove 12 a provided at the tip of the needle bed 12 on the side of the mouth 18 and the sinker plate 14. To prevent. A step portion 12b for accommodating a knitting yarn drop prevention portion, a steady portion, and the like described in FIG. 1B is also formed on the upper surface of the needle bed 12 near the tip of the mouth 18 side.

The knitting needle 13 is also provided with a transfer blade 13b. In the flat knitting machine, a needle bed similar to the needle bed 12 is opposed to each other with the tooth opening 18 in between, and a transfer of moving the stitch loop between the needle beds on both sides can be performed. When transferring the stitch, the knitting needle 13 is slid to the mouth side until the blade 13b advances to the tooth mouth 18. In the case where the blade 13b is provided, it is necessary that the knitting yarn fall preventing portion and the steadying portion of the yarn guide spacer 15 do not interfere with the advance and retreat of the blade 13b toward the tooth opening 18.

As shown in FIG. 1B, the steady state of the yarn guide spacer 15 is an extension portion 15a equivalent to the extension portion 5a of the yarn guide spacer 5 and the knitting yarn drop prevention portions 5b and 5c shown in FIG. In addition to the knitting yarn fall prevention portions 15b and 15c, an advancement portion 15d is provided. Note that only one of the knitting yarn drop preventing portions 15b and 15c may be provided.

The advancing portion 15d advances from the middle of the edge of the extending portion 15a in the direction of the needle groove 16a, that is, in the direction away from the tooth mouth 18, and is sandwiched between the needle plates 16 on both sides. Both sides of the edge of the extended portion 15a for advancing the advance portion 15d abut against the end portions 16d of the needle plates 16 on both sides sandwiching the advance portion 15d to form a steady portion. As described above, the step portion 12b is formed on the upper surface of the needle bed 12 where the extension portion 15a and the advance portion 15d are disposed. The stepped portion 12b can be easily formed by processing such as cutting the needle bed 12 along the tooth opening 18 in the longitudinal direction.

If the tip of the advancing portion 15d is brought into contact with the wall surface of the stepped portion 12b, more accurate positioning can be performed. Even if there is a gap between the tip of the advancing portion 15d and the wall surface of the stepped portion 12b, the steadying is realized by sandwiching the advancing portion 15d with the needle plate 16 from both sides. In FIG. 1, since the edge of the extended portion 15a abuts on the end portion 16d of the needle plate 16 on both sides of the advancing portion 15d, there is a gap between the advancing portion 15d and the side surfaces of the needle plates 16 on both sides. Also, reliable steadying can be performed. Even if there is a gap between the end edge of the extension portion 15a and the end portion 16d of the needle plate 16, the end edge of the extension portion 15a becomes a needle with a smaller swing than the yarn guide spacer 15 contacts the sinker plate 14. If it contacts the end 16d of the plate 16, contact with the sinker plate 14 due to shaking can be prevented.

The depth of the stepped portion 12b corresponds to the plate thickness of the extending portion 15a and the advancing portion 15d of the yarn guide spacer 15. By setting the depth of the stepped portion 12b to be equal to or greater than the plate thickness of the extending portion 15a and the advancing portion 15d, the surface of the advancing portion 15d becomes higher than the bottom of the needle groove 16a of the needle bed 12, and the knitting needle 13 can be smoothly performed. The height above the paper surface of the knitting yarn fall prevention portions 15b and 15c is effective for preventing the knitting yarn 17 from falling, but the height above the paper surface on the knitting yarn fall prevention portion 15c side is the height of the blade 13b. To the extent that does not hinder the passage.

FIG. 2 shows the structure of the yarn guide spacer 15 used in the sinker device 11 of FIG. (A) is a plan view, (b) is a side view, (c) is a front view, and (d) is a perspective view to show the appearance. The extending portion 15a, the knitting yarn drop preventing portions 15b and 15c, and the advance portion 15d are provided below the guide portion 15e that guides the knitting yarn 17 during knitting. The maximum width W of the yarn guide spacer 15 including the extension length of the extension portion 15a shown in FIG. 5A is made slightly smaller than the interval between the sinker plates 14 and is about several mm. The length L of the advancing portion 15d shown in (b) is about several mm. The plate thickness t is smaller than 1 mm.

FIG. 3 shows the main members forming the sinker device 11 of FIG. A needle plate 16 is juxtaposed on the needle bed 12 with an interval for forming the needle groove 16a. The needle plate 16 is provided with a thin portion 16b and a support recess 16c for supporting the swinging displacement of the sinker plate 14. The sinker plate 14 is integrally formed with a spring portion 14 a, and the arm 14 b oscillates in the tooth opening 18 by oscillating displacement about the support portion 14 c. A knitting yarn holding portion 14 d provided near the tip of the arm 14 b of the sinker plate 14 pushes the knitted fabric through the tooth opening 18. The rocking for pushing is performed in a state where the support portion 14c is fitted and supported in the support recess 16c of the needle plate 16. The urging for pushing is performed based on the torque generated by the spring portion 14a. Patent Documents 1 and 2 disclose a configuration in which the spring bias is performed by a wire spring that is separate from the sinker plate. Also in this embodiment, it is of course possible to use a wire spring separate from the sinker plate.

When the wire spring is separated from the sinker plate, it takes time to incorporate the wire spring as a sinker device. When installing, it is also necessary to fix the wire spring to the sinker plate using brazing or the like. However, if the fixing accuracy is not good, the sinker plate will shake when combined as a sinker device. In the sinker plate 14 of the present embodiment, the shape of the spring portion 14a is devised and integrated, and mass production can be performed with high accuracy by pressing.

In the present embodiment, the spring portion 14a is integrated to prevent the sinker plate 14 itself from shaking, and the advancing portion 15d of the yarn guide spacer 15 is sandwiched and restrained by the needle plate 16 so that the yarn guide spacer 15 is knitted. This also prevents run-out. Since the shakers of the sinker plate 14 and the yarn guide spacers 15 arranged side by side are prevented, the sinker plates 14 and the yarn guide spacers 15 are less likely to come into contact with each other, and the sinker plate 14 can be prevented from swinging. A knitting needle 13 is accommodated in the needle groove 16 a between the needle plates 16, and a spacer 20 is provided above the knitting needle 13.

A plate clamping wire 21 penetrates through a joint portion between the needle bed 12 and the needle plate 16. The needle plate 16, the yarn guide spacer 15, and the spacer 20 are positioned by pressing the upper surface with the pressing plate 22 and penetrating the spacer positioning wire 23.

It is the partial top view which shows the structure of the principal part of the sinker apparatus 11 as one Embodiment of this invention, and the top view which expanded the part further. It is the top view, side view, front view, and perspective view which show the structure of the yarn guide spacer 15 used for the sinker apparatus 11 of FIG. It is a side view which shows the main members which form the sinker apparatus 11 of FIG. It is the simplified sectional view of the vicinity of a tooth mouth which shows the schematic structure of the sinker apparatus 1 which has the knitting yarn fall part by a prior art. It is a perspective view which shows the example of the external appearance of the yarn guide spacer 5 of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Sinker apparatus 12 Needle bed 12a Guide groove 12b Step part 13 Knitting needle 14 Sinker plate 15 Yarn guide spacer 15a Extension part 15b, 15c Knitting yarn fall prevention part 15d Advance part 16 Needle plate 16d End part 17 Knitting thread 18 Tooth

Claims (4)

A plurality of needle plates are erected at a predetermined pitch on the needle bed,
Needle grooves for accommodating the knitting needles so as to be movable back and forth with respect to the mouth are formed between the needle plates, respectively.
A movable sinker plate disposed between the needle grooves swings forward and backward with respect to the tooth opening along a guide groove formed at the tip of the needle bed on the tooth opening side,
In the sinker device of a flat knitting machine in which the tip of the mouth of the yarn guide spacer provided side by side on the side of the sinker plate is extended to the tip of the needle bed to provide a knitting yarn fall prevention part,
A sinker device for a flat knitting machine, wherein the extending part extended from the yarn guide spacer has an advancing part that advances in a direction away from the mouth and is sandwiched between needle plates. The tip part of the needle bed side of the needle bed accommodates the extension part of the yarn guide spacer and the advancing part, and at the time of accommodation, the surface of the extension part and the advancing part of the yarn guide spacer and the bottom part of the needle groove The sinker device for a flat knitting machine according to claim 1, further comprising a step portion for smoothly moving the knitting needle forward and backward. The advancing part of the yarn guide spacer advances between the needle plates from the middle of the edge of the extending part,
3. The sinker for a flat knitting machine according to claim 2, wherein the ends of the extension part or the knitting yarn fall prevention part on both sides of the advance part are in contact with the ends of the needle plates on both sides of the advance part. apparatus. A plurality of needle plates are erected at a predetermined pitch on the needle bed,
Needle grooves for accommodating the knitting needles so as to be movable back and forth with respect to the mouth are formed between the needle plates, respectively.
A flat knitting machine in which a movable sinker plate disposed between the needle grooves moves forward and backward with respect to the tooth mouth along a guide groove formed at the tip of the needle bed on the tooth mouth side,
In the yarn guide spacer disposed on one side of the sinker plate and extending the tip of the needle bed to the tip of the needle bed to provide a knitting yarn fall prevention part,
So as to be sandwiched between the needle plate, the yarn guide spacer, characterized in that in a direction away from the needle bed gap, with the advance unit for advancing the portion to out the extension.

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