JP2013112918A - Compound needle for flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compound needle for a flat knitting machine in which a space on one side of a curved portion of a sliding resistance imparting plate part is hardly expanded toward the other side by accumulation of dust, and which can delay work for removing the dust from inside the space.SOLUTION: In a compound needle 1, a slider 3 includes: a slider base 31; two blades 32 and 33 which are supported by the slider base 31 and each extend rearward; a sliding resistance imparting plate part 37 which has a front end integrally connected to one of the blades 32 and 33 and extends rearward, and which has a curved portion 371 brought into sliding contact with a needle plate to impart sliding resistance; a fixing part 43 which is provided on the slider base 31 and fixes the front end of the sliding resistance imparting plate part 37 from one side; and a sliding contact part 44 which is provided on the slider base 31 and allows the rear end of the sliding resistance imparting plate part 37 to come into sliding contact therewith from the one side. The slider base 31 includes a connecting part 311 which extends above the curved portion 371 to connect the fixing part 43 and the sliding contact part 44. The connecting part 311 is formed by cutting and removing a portion on the one side of the curved portion 371.

Description

  The present invention relates to a compound needle used in a flat knitting machine.

  As a knitting needle of a flat knitting machine, a compound needle having a needle body and a slider that move relative to each other in the front-rear direction may be used. This compound needle is accommodated between the needle grooves of the needle bed of the flat knitting machine. Further, the slider has a slider base and two blades supported by the slider base and overlapped with each other, and these blades are formed in slider grooves extending in the front-rear direction on the mouth side (front side) of the needle body. It is slidably accommodated. In this case, each blade is brought into contact with the side surface of the hook tip of the needle body to advance and branch to the left and right, and the knitting needle on the needle bed facing this is advanced between the blades that have advanced beyond the hook. So I'm trying to transfer.

  However, in a compound needle that advances the slider and opens each blade to the left and right, the knitting yarn rubs against the hook when transferring and the like, and dust such as fluff is easily generated between the blades. For this reason, dust adheres to the hook of the knitting needle or accumulates in the vicinity thereof.

  From this point of view, there has been conventionally proposed a dust removing plate provided between the blades (see Patent Document 1).

Japanese Patent No. 3983737

  By the way, the dust adhering to the hook and the dust accumulated around it tend to be sequentially sent to the rear side of the needle body with the relative movement of the needle body and the slider in the front-rear direction regardless of the presence or absence of the dust removal plate. is there.

  In that case, at least one of the blades may be provided with a sliding resistance applying plate portion that applies sliding resistance by sliding contact with a curved portion protruding in a substantially arc shape when the slider moves. A space partitioned by the curved portion and the slider body or the other blade is formed on one side of the curved portion of the sliding resistance applying plate portion. In this space, the dust sequentially sent to the rear side of the needle body easily accumulates, and the accumulated dust expands to one side of the curved portion. However, since there is a slider base on one side of this space, swelling of the space to one side due to accumulated dust is hindered by contact with the slider base. As a result, the space swells to the other side of the curved portion (in the opposite direction to the space), the sliding contact resistance of the curved portion increases, and the movement of the compound needle worsens. For this reason, in order to keep the movement of the compound needle smoothly, it is necessary to perform an operation of removing dust from the space before the space is expanded to the other side by accumulated dust.

  An object of the present invention is to provide a compound needle for a flat knitting machine that makes it difficult for the accumulated dust to bulge to the other side due to accumulated dust and delays the work of removing dust from the space.

  In order to achieve the above object, the present invention comprises a needle body and a slider which are accommodated between needle grooves of a needle bed of a flat knitting machine and move relative to each other in the front-rear direction. The slider includes a slider base and the slider base. Or two blades slidably received in a slider groove extending in the front-rear direction on the side of the mouth of the needle body and extending rearward, and at least one of the blades integrated with a rear end A sliding resistance application plate portion that is provided in a separate body and extends rearward, and a curved portion that is curved in a substantially arc shape when the slider is moved to slidably contact to provide sliding resistance; and is provided on the slider base, It is premised on a compound needle having a fixed portion that fixes one of the front and rear ends of the sliding resistance imparting plate portion from one side and a sliding contact portion that slides the other from one side. . The slider base is provided with a connecting portion for connecting the fixed portion and the sliding contact portion extending above or below the curved portion, and the connecting portion is cut off at one side of the curved portion. It is characterized by being.

  Further, it is preferable that the sliding resistance applying plate portion is provided continuously only at one rear end of each of the blades.

  Moreover, it is preferable to provide a gap between the curved portion of the sliding resistance applying plate portion and the connecting portion of the slider base.

  Furthermore, it is preferable to provide a notch or a hole in the sliding contact portion or the sliding resistance applying plate portion that is in sliding contact with the sliding contact portion.

According to the present invention, the connecting portion that connects the fixed portion of the slider base and the sliding contact portion cuts one side of the curved portion, so that the space bulges to one side of the curved portion due to dust accumulation. Is not disturbed by the slider substrate. As a result, the space is less likely to bulge to the other side, the movement of the compound needle is maintained smoothly, and the dust removal operation from the space can be delayed.
In addition, by connecting the fixed portion and the sliding contact portion with a connecting portion extending above or below the curved portion, the interval in the front-rear direction between the fixed portion and the sliding contact portion is arbitrarily set according to the length of the connecting portion. It becomes possible to do. Thereby, the front-rear length of the curved portion of the sliding resistance applying plate portion can be increased, and the sliding resistance of the curved portion with respect to the needle plate can be easily set.

  Further, by connecting the sliding resistance applying plate portion to only one blade, the space on one side of the curved portion of the sliding resistance applying plate portion is expanded to the needle plate on the one side. In addition, the dust accumulated in the space moves back and forth as the slider slides. For this reason, dust in the space can easily escape, and even if dust accumulates in the space, a sufficient time can be taken to fill the space. Thereby, the removal operation | work of the dust in space can be delayed more.

  In addition, by providing a gap between the curved portion of the sliding resistance applying plate portion and the connecting portion of the slider base, dust accumulated in the space can be easily discharged through the gap, and the dust in the space can be further removed. Can be delayed.

  Furthermore, even if dust accumulates in the space by providing a notch or a hole on the other of the sliding contact portion or the front and rear ends of the sliding resistance imparting plate portion that is in sliding contact with the sliding contact portion Dust is easily discharged from the notch or hole of the sliding resistance imparting plate. Thereby, the removal operation | work of the dust in space can be delayed further.

It is the side view which looked at the compound needle of the flat knitting machine concerning a 1st embodiment of the present invention from the juxtaposition direction of a needle groove. It is a side view in the state which decomposed | disassembled the compound needle | hook of FIG. (A) is an enlarged view of the vicinity of the blade of the composite needle of FIG. 1, and (b) is a bottom view of the vicinity of the sliding resistance applying plate portion of the composite needle as viewed from the needle bed side. The modification of 1st Embodiment is shown, (a) is an enlarged side view near the braid | blade of a compound needle, (b) is a bottom view near the sliding resistance provision board part of a compound needle. The other modification of 1st Embodiment is shown, (a)-(c) is an expanded side view of the braid | blade vicinity of a compound needle, respectively. It is a side view of the compound needle of the flat knitting machine which concerns on the 2nd Embodiment of this invention. It is a side view in the state which decomposed | disassembled the compound needle | hook of FIG. (A) is an enlarged side view of the vicinity of the blade of the composite needle of FIG. 6, and (b) is a bottom view of the vicinity of the sliding resistance applying plate portion of the composite needle.

  Next, preferred embodiments of the compound needle of the flat knitting machine of the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a side view of the composite needle according to the first embodiment of the present invention viewed from the direction in which the needle grooves are arranged, and FIG. 2 is a side view of the composite needle in an exploded state.

  A plurality of compound needles 1 of the present invention are juxtaposed in the longitudinal direction of a needle bed (not shown) (the front and back of the paper in FIG. 1). It is accommodated in the needle groove 10 (appears in FIG. 3B) in a state in which it can move forward and backward in the left-right direction in FIG. The compound needle 1 is composed of a needle body 2 and a slider 3. Then, by relatively moving the needle body 2 and the slider 3 in the front-rear direction, the tongue 35 at the front end of the slider 3 opens and closes the hook portion 21 at the front end of the needle body 2, and the tongue 35 exceeds the hook portion 21. Move forward. In the following description, the component parts of the needle body 2 and the slider 3 are also referred to as the front side and the opposite side as the rear side.

  The needle body 2 includes a hook member 22 having a hook portion 21 at the front end. The slider 3 includes a slider base 31 and two blades 32 and 33 having substantially the same shape supported by the slider base 31 and overlapped with each other.

  The hook member 22 includes a slider groove 24 connected to the rear side of the hook portion 21, and the slider groove 24 supports the front end portions of the blades 32 and 33 slidably inserted in the front-rear direction. . The hook member 22 includes a support surface portion 25 at a substantially central portion in the front-rear direction. The support surface portion 25 slidably supports a fixed portion 43 of a slider base 31 and a lower surface of a sliding contact portion 44 described later. Yes. Further, the hook member 22 includes a fitting recess 26 at the rear end thereof, and a projection 231 protruding downward from the front end of the needle jack 23 is fitted and connected by the fitting recess 26. The needle jack 23 has an arm 27 extending rearward from the fitting recess 26 of the hook member 22. The arm 27 is curved downward so that its rear end is brought into contact with the needle groove 10. A branch arm 28 that branches upward and extends forward is provided near the center of the needle jack 23 in the front-rear direction. Below the branch arm 28, the rear end of the slider base 31 is supported so as not to fall off.

  The blades 32 and 33 are overlapped at the center position of the hook member 22 in the needle width direction, and a tongue 35 is formed at each front end.

3A is an enlarged side view of the composite needle 1 near the blades 32 and 33, and FIG. 3B is a bottom view of the vicinity of the composite needle 1 sliding resistance applying plate portion viewed from the needle bed side.
As shown in FIGS. 3A and 3B, the slider 3 includes a sliding resistance imparting plate portion 37. The front end of the sliding resistance applying plate portion 37 is integrally connected to the rear end of the blade 33 of one of the blades 32 and 33 (the front side in FIG. 3A) and extends backward. Yes. The sliding resistance applying plate portion 37 is curved in a substantially arc shape so that the central portion in the longitudinal direction is in sliding contact with the needle plate 11 on the other side in the needle width direction (upward in FIG. 3B) when the slider 3 moves. A curved portion 371 is provided, and sliding resistance is applied to the slider 3 by sliding contact of the curved portion 371. The curved portion 371 swells to the other side in the needle width direction. Further, the slider 3 includes an extending portion 38. The front end of the extending portion 38 is integrally connected to the rear end of the blade 32 on the other side (the rear side in FIG. 3A) and extends rearward. The extending portion 38 is set to have substantially the same length as the sliding resistance applying plate portion 37. A space 39 partitioned by the curved portion 371 and the extending portion 38 is provided on one side of the curved portion 371 of the sliding resistance applying plate portion 37 in the needle width direction (downward in FIG. 3B). It has been. In the following description, the other side in the needle width direction is simply referred to as the other side, and one side in the needle width direction is simply referred to as the one side.

  Further, a guide groove 41 extending in the front-rear direction at the center position in the needle width direction of the support surface portion 25 is continuously provided on the rear side of the slider groove 24. A protrusion 381 is integrally provided at the rear portion of the extending portion 38 and is offset-bent to the center position in the needle width direction of the support surface portion 25 and protrudes to the inside of the guide groove 41. The protrusion 381 is slidably accommodated in the guide groove 41.

The slider base 31 is provided with a fixing portion 43 that fixes the rear ends of the blades 32 and 33 together with the sliding resistance applying plate portion 37 and the front ends of the extending portions 38 from one side. Further, the slider base 31 is provided with a sliding contact portion 44 for slidingly contacting the rear end of the sliding resistance applying plate portion 37 from one side via the rear end of the extending portion 38. Furthermore, the slider base 31 is provided with a connecting portion 311 that connects the fixed portion 43 and the sliding contact portion 44 by extending the curved portion 371 in the front-rear direction. And the connection part 311 has one side of the curved part 371 cut away. As a result, the swelling of the space 39 to one side of the curved portion 371 due to dust accumulation is not hindered by the slider base 31. Therefore, it becomes difficult for the space 39 to swell to the other side, the movement of the compound needle 1 is maintained smoothly, and the dust removal work from the space 39 can be delayed.
In addition, the fixing portion 43 and the sliding contact portion 44 are connected to each other by the connecting portion 311 extending in the front-rear direction above the curved portion 371, so that the distance in the front-rear direction between the fixing portion 43 and the sliding contact portion 44 can be reduced. It can be arbitrarily set according to the length. Accordingly, the longitudinal length of the curved portion 371 of the sliding resistance applying plate portion 37 can be increased, and the sliding resistance of the curved portion 371 with respect to the needle plate 11 can be easily set.

  Further, a gap 40 is provided between the curved portion 371 of the sliding resistance imparting plate portion 37 and the connecting portion 311 of the slider base 31 so as to extend in the front-rear direction between the upper and lower sides of both of them 371, 311. As a result, the dust accumulated in the space 39 can be easily discharged through the gap 40, which is very effective in delaying the dust removal operation in the space 39.

  The fixing portion 43 includes a groove 431 that is recessed in the other side surface (the front side surface in FIG. 3A) and extends in the front-rear direction, and a substantially rectangular shape that is connected to the upper side of a substantially middle position in the front-rear direction of the groove 431. And a concave portion 432 having a shape. The rear ends of the blades 32 and 33 are inserted into the grooves 431. Further, at the rear ends of the blades 32 and 33, convex portions 323 and 333 that are fitted into the concave portion 432 are respectively projected. Then, the rear ends of the blades 32 and 33 are fitted in the grooves 431 of the fixing portion 43, the convex portions 323 and 333 are fitted into the concave portion 432, and the sliding resistance applying plate portion 37 is fixed by caulking. And it is being fixed to the fixing | fixed part 43 with the front end of the extension part 38. FIG.

  The slidable contact portion 44 includes a groove 441 that is recessed in the other side surface and extends in the front-rear direction. The rear ends of the sliding resistance applying plate portion 37 and the extending portion 38 are fitted into the groove 441. Further, the bottom surface of the groove 441 is curved so that the groove 441 becomes shallower toward the rear when it exceeds the sliding contact portion with the rear end of the sliding resistance applying plate portion 37 and the extending portion 38.

  Further, a convex portion 29 protruding upward is provided at the rear end of the support surface portion 25. A concave portion 291 is provided on the front surface of the convex portion 29. The sliding contact portion 44 is provided with a convex portion 442 that protrudes rearward. When the slider 3 is positioned at the retracted position (position shown in FIG. 1) of the slider groove 24, the projecting portion 442 of the sliding contact portion 44 is fitted into the recessed portion 291, so that the slider below the branch arm 28. In combination with the support of the rear end of the base 31, the slider 3 is supported so as not to be disengaged upward with respect to the needle body 2. As a result, the needle body 2 is restrained at two positions on the front and rear with respect to the slider 3, and the work of removing the compound needle 1 from the needle groove 10 can be performed smoothly.

Here, the modification of 1st Embodiment is demonstrated based on FIG.
4A is an enlarged side view of the vicinity of the composite needle blade, and FIG. 4B is a bottom view of the vicinity of the sliding resistance applying plate portion of the composite needle. In addition, since the structure other than a sliding resistance provision board part and an extension part is the same as 1st Embodiment, only the structure of a sliding resistance provision board part and an extension part is demonstrated.

  That is, as shown in FIG. 4, the slider 3 includes a sliding resistance imparting plate portion 37. The front end of the sliding resistance imparting plate portion 37 is integrally connected to the rear end of the blade 32 of one of the blades 32 and 33 (the rear side in FIG. 4A) and extends rearward. Yes. Further, the rear end of the blade 33 on the other side (the front side in FIG. 4A) is caulked and fixed at the fixing portion 43 together with the one blade 32. In this case, there is no extending portion at the rear end of the other blade 33.

  In this case, the space 39 on one side (lower side in FIG. 4B) of the curved portion 371 of the sliding resistance applying plate portion 37 is not partitioned by the other blade 32 (extension portion), The needle plate 11 is extended to one side thereof. Further, the dust accumulated in the space 39 easily moves back and forth between the sliding resistance applying plate portion 37 and the needle plate 11 as the slider 3 moves. For this reason, the dust in the space 39 can easily escape, and even if the dust accumulates in the space 39, a sufficient time can be taken to fill the space 39. Thereby, the removal of dust from the space 39 can be further delayed.

In addition, the modification of this Embodiment is not restricted to this, The modification shown in FIG. 5 is also included.
(A)-(c) of FIG. 5 has each shown the expanded side view of the braid | blade vicinity of a compound needle. In the modification of (a), the slidable contact portion 44 is provided with a substantially rectangular hole portion 443 that is long in the front-rear direction and penetrates the approximate center position of the slidable contact portion 44 in the width direction. In place of the hole, a notch that is notched backward in a substantially concave shape is provided at the front edge of the sliding contact portion, and a notch portion that is notched upward in a substantially concave shape is provided at the lower edge of the sliding contact portion. It may be done.
Moreover, in the modification of (b), the notch part 372 which notched forward in the substantially concave shape at the rear end of the sliding resistance provision board part 37 is provided.
Furthermore, in the modified example of (c), rectangular hole portions 373 are provided in the front end portion and the rear end portion of the sliding resistance imparting plate portion 37, respectively.
In these modified examples, even if dust accumulates in the space 39, the accumulated dust is easily discharged from the rear end of the sliding resistance imparting plate portion 37 through the holes 443, 373 or the notch 372. Thereby, it is possible to further delay the operation of removing dust in the space 39.

Next, a second embodiment of the present invention will be described with reference to FIGS.
FIG. 6 shows a side view of the compound needle of the flat knitting machine according to the second embodiment of the present invention. FIG. 7 shows a side view of the compound needle in an exploded state. 8A is an enlarged side view of the vicinity of the blade of the composite needle, and FIG. 8B is a bottom view of the vicinity of the sliding resistance applying plate portion of the composite needle. Since the rest of the configuration excluding the slider base is the same as that of the first embodiment, only the configuration of the slider base will be described.

  That is, as shown in FIGS. 6 to 8, the slider base 51 is provided with a fixing portion 43 and a sliding contact portion 52. The slider base 51 includes a connecting portion 511 that connects the fixing portion 43 and the sliding contact portion 52. The connecting portion 511 extends below the curved portion 371 in the front-rear direction. The connecting portion 511 is cut out at one side of the curved portion 371 ((lower in FIG. 8B)), whereby the space 39 toward the one side of the curved portion 371 due to dust accumulation is removed. The swelling is not hindered by the slider base 51. Therefore, the space 39 is difficult to bulge to the other side, the movement of the compound needle 1 is maintained smoothly, and the dust removal work from the space 39 is delayed. Can do.

A gap 40 is provided between the curved portion 371 of the sliding resistance applying plate portion 37 and the connecting portion 511 of the slider base 51 so as to extend in the front-rear direction between the upper and lower sides of both of them 371, 511. Moreover, the sliding contact part 52 is provided with the step part 521 dented in one side from the other side surface.
In this case, the rear end of the sliding resistance applying plate portion 37 is in sliding contact with the step portion 521 of the sliding contact portion 52 via the rear end of the extending portion 38.

  The present invention is not limited to the above-described embodiments and modifications, and includes other various modifications. For example, in each of the above embodiments, the front end of the sliding resistance imparting plate portion 37 is integrally connected to the rear end of one blade 33, and the front end of the extending portion 38 is integrally formed to the rear end of the other blade 32. The sliding resistance application plate part and the extension part are prepared separately from each blade, and the sliding resistance application plate part and the front end of the extension part are separately provided at the rear end of each blade. It may be provided continuously. In addition, a sliding resistance application plate part separate from each blade is prepared, and the sliding resistance application plate part is continuously connected to the rear end of one of the blades in a state where the front ends of the blades overlap each other. It may be.

  Further, in each of the above-described embodiments and modifications, the fixed portion 43 is provided on the front side of the connecting portions 311 and 511 and the sliding contact portions 44 and 52 are provided on the rear side. The sliding contact portion may be provided on the front side.

DESCRIPTION OF SYMBOLS 1 Compound needle 10 Needle groove 11 Needle plate 2 Needle main body 3 Slider 31 Slider base | substrate 311 Connection part 32, 33 Blade 37 Sliding resistance provision board part 371 Curved part 372 Notch part 373 Hole part 40 Crevice 43 Fixing part 44 Sliding contact part 442 Hole 51 Slider base 511 Connecting portion 52 Sliding contact portion g Tooth

Claims (4)

A needle body and a slider which are accommodated between needle grooves of a needle bed of a flat knitting machine and move relative to each other in the front-rear direction, the slider being supported by the slider base and the mouth side of the needle body Two blades slidably accommodated in a slider groove extending in the front-rear direction and extending rearwardly, and extending rearwardly integrally or separately from the rear end of at least one of the blades, A sliding resistance applying plate portion that provides sliding resistance by a curved portion that curves in a substantially arcuate shape when the slider moves, and is provided on the slider base, of both front and rear ends of the sliding resistance applying plate portion In a compound needle having a fixed part that fixes one of the two from one side and a sliding contact part that slides the other from one side,
The slider base includes a connecting portion that connects the fixed portion and the sliding contact portion by extending above or below the curved portion;
The connecting portion is a compound needle for a flat knitting machine, wherein one side of the curved portion is cut off.   2. The compound needle of a flat knitting machine according to claim 1, wherein the sliding resistance applying plate portion is continuously provided only at one rear end of the blades.   The compound needle of the flat knitting machine according to claim 1 or 2, wherein a gap is provided between the curved portion of the sliding resistance applying plate portion and the connecting portion of the slider base.   The flat knitting according to any one of claims 1 to 3, wherein the sliding contact portion or the sliding resistance applying plate portion that is in sliding contact with the sliding contact portion is provided with a notch or a hole. Compound needle.