JP2012132125A - Compound needle of flat-knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compound needle of a flat-knitting machine which ensures sufficient allowance for hooking to a cam to be guided when a tongue of a slider advances to a tooth port over a hook of a needle main body.SOLUTION: A rear arm 15c of a substrate 15 of a slider 13 has a step 15d at a rear part. At the back side of the step 15d the gap between the rear arm 15c and a branched arm 6d of a needle jack 6 increases. As a tongue 4a advances to a tooth port 14 over a hook 2a, only the branched arm 6d and the back side of the step 15d get to be opposed with each other. The rear arm 15c, which is opposed to the branched arm 6d with a large gap S at the back side of the step 15d, hardly falls down even if the needle jack 6 falls into a needle groove 10, thereby reducing the falling amount of a batt 15b and sufficiently ensuring the allowance for hooking to a cam.

Description

  The present invention relates to a flat knitting including a needle body provided with a hook at the front end, and a slider that can be opened and closed by a tongue at the front end of a blade that can be divided into two sheets and that can also advance the tongue over the hook into the tooth opening. It relates to the compound needle of the machine.

  Conventionally, in flat knitting machines, needle grooves are arranged in parallel in the needle bed, hooks provided at the front ends of the knitting needles accommodated in the needle grooves are advanced and retracted to the mouth, and the knitting yarn supplied at the mouth is captured by the hook. The knitted fabric is knitted while forming the stitches. Hereinafter, in this specification, the advancing / retreating direction of the knitting needle is the front-rear direction, the direction approaching the tooth opening is the front, and the direction away from the tooth opening is the rear. Further, in the needle groove, the direction of rising to the surface side of the needle bed is up, and the direction of sinking to the bottom is down.

  As the knitting needle, a compound needle is also used in which a hook is provided at the front end of the needle stem of the needle body, and a hook provided at the tip of a slider that can move back and forth relative to the needle body is used to open and close the hook opening (see FIG. For example, see Patent Document 1). In the compound needle shown in Patent Document 1, a tongue is formed at the front end of a blade that can be divided into two sheets, and it is also possible to perform transfer or the like with a blade that extends beyond the hook and advances to the mouth. In order to drive the slider and needle body independently, a bat is provided on each of the slider base and the needle jack coupled to the needle body, and the bat is guided by a cam mounted on a carriage that runs along the needle bed. Like to do.

  FIG. 5 shows a schematic configuration of a composite needle 1 that is basically equivalent to the composite needle described in Patent Document 1 in a state where the slider base and the needle jack are housed in a needle groove. Show. However, illustration of the configuration related to the needle groove is omitted. In the compound needle 1, the hook 2 a of the needle body 2 is formed at the front end of the needle stem 2 b, and the hook 4 a is opened and closed by a tongue 4 a formed at the front end of the blade 4 of the slider 3. The blade 4 is divided into two, and in the stitch forming operation such as knit, the needle body 2 is in a state until the front end of the tongue 4a abuts against the heel end of the hook 2a and closes the heel as shown in FIG. Slide the slider 3 forward. When opening the hook of the hook 2a, the slider 3 is moved backward with respect to the needle body 2 so that the front end of the tongue 4a is separated from the tip of the hook 2a.

  In the slider 3, two blades 4 are combined with the base body 5. The base 5 includes a sliding contact portion 5a that slides against the side wall of the needle groove to provide sliding resistance, a bat 5b that protrudes from the needle groove to the surface side of the needle bed, and a rear arm 5c that extends rearward from the bat 5b. The needle body 2 has a fitting recess 2c in the rear part of the needle stem 2b, and has a blade groove 2d for accommodating the lower part of the two blades 4 in the upper part of the needle stem 2b. The compound needle 1 also includes a needle jack 6. The needle jack 6 has a front arm 6a extending forward and a bat 6b extending upward from the base of the front arm 6a. At the tip of the front arm 6a, a fitting projection 6c that fits with the fitting recess 2c of the needle body 2 is provided, and the needle body 2 and the needle jack 6 are coupled by fitting. A branch arm 6d extending forward is branched from the middle of the bat 6b. The leg 6e extends from the bat 6b so as to curve backward. The other part of the needle jack 6 floats in the needle groove by the elastic force of the leg 6e. In the leg 6e, members necessary for needle selection, such as a select jack and a selector, are provided behind the illustrated portion. The select jack has a bat that protrudes from the inside of the needle groove to the surface side of the needle bed, and receives a pressure on the bat according to the needle selection state. The rear arm 5c of the base body 5 of the slider 3 is inserted into the gap between the front arm 6a and the branch arm 6d. Since the rear arm 5c is inserted under the branch arm 6d, when the leg 6e of the needle jack 6 is pressed through the select jack so as to sink into the needle groove, the bat 5b of the base body 5 is also moved into the needle groove together with the bat 6b. The protrusion height of the upper part of the head decreases and sinks into the needle groove.

  As shown in FIG. 5 (b), the slider 3 can be advanced forward with the tongue 4 a beyond the hook 2 a of the needle body 2. The length of the rear arm 5c and the branch arm 6d is such that the rear arm 5c does not come out of the gap between the front arm 6a and the branch arm 6d of the needle jack 6 even if the slider 3 is advanced relative to the needle body 2. Keep it. If the rear arm 5c comes out of the gap between the needle jacks 6, when the slider 3 moves backward with respect to the needle body 2, the rear end of the rear arm 5c and the front end of the branch arm 6d come into contact with each other and cannot be reinserted. Such a situation can occur.

Japanese Patent No. 3085657

  As described in FIG. 12 and paragraph [0037] of Patent Document 1, the above-described compound needle may be operated as a stitch transfer side of the transfer operation. In this case, the butt of the select jack is sunk under the action of the presser, and the butt of the needle jack is also sunk, and only the bat of the slider is guided by the cam groove of the slider cam. In the compound needle 1 of FIG. 5 of the present application, in such a case, as shown in FIG. 5 (b), the branch arm 6d and the rear arm 5c are in a positional relationship where they overlap each other. When sunk, the bat 5b of the slider 3 sinks slightly due to the influence, and the protrusion of the bat 5b protruding from the surface of the needle bed is reduced, so that the allowance for receiving the guide by the cam groove of the slider cam is sufficiently secured. You may not be able to do it.

  It is an object of the present invention to provide a compound needle for a flat knitting machine that can sufficiently secure an allowance for a cam that receives a guide when a tongue of a slider advances to a tooth opening beyond a hook of a needle body. Is to provide.

The present invention provides a needle body capable of advancing and retracting a hook at the front end of the needle stem to and from the mouth,
A slider that is formed by combining a base body and a blade that can be divided into two pieces, opens and closes the hook mouth with the tongue at the front end of the blade, and can also advance the tongue to the tooth mouth over the hook,
The front end of the front arm includes a needle jack coupled to the rear of the needle stem of the needle body;
The needle body, slider, and needle jack are accommodated in a needle groove arranged in parallel with the needle bed,
Needle jack
A bat protruding in the direction of rising from the needle groove at the rear end of the front arm,
A branch arm that branches from the middle of the bat and extends forward;
The base of the slider
A bat protruding in the direction of rising from the inside of the needle groove,
A rear arm extending rearward from the bat and inserted between the branch arm of the needle jack and the front arm;
At least one of the rear arm of the base of the slider and the branch arm of the needle jack is within a range where the rear arm and the branch arm face each other with the slider tongue not facing the hook of the needle body. A flat knitting characterized in that the opposing gap becomes wider at the rear side and a step which becomes narrower at the front side at a position ahead of the opposing part in a state where the tongue extends forward beyond the hook of the needle body It is a compound needle of the machine.

  In the present invention, the step is provided only on a rear arm of the base of the slider.

  In the present invention, when the tongue of the slider advances forward beyond the hook, the stitch is locked to the tongue and advanced to the tooth opening to operate as a transfer transfer side.

  According to the present invention, the slider of the compound needle can open and close the hook of the needle body with the tongue at the front end of the blade that can be divided into two sheets, and the tongue can be advanced to the tooth opening beyond the hook. The rear arm extending rearward from the slider base is inserted between the front arm of the needle jack coupled to the rear portion of the needle stem of the needle body and the branch arm branching from the rear end of the front arm and extending forward. At the part where the rear arm and the branch arm face each other, with the tongue extending beyond the hook and into the tooth opening, at least one of the rear arm or the branch arm has a gap at the opposite part behind the front side. A step that widens on the side is provided. The gap between the rear arm and the branch arm is widened when the tongue is advanced over the hook, so even if the butt of the needle jack sinks in the needle groove, the protrusion of the slider bat does not decrease. It is possible to secure a sufficient allowance for the cam receiving the guidance.

  Further, according to the present invention, the rear arm of the slider base is provided with a step in which the gap facing the branch arm of the needle jack is wider when the slider tongue exceeds the hook of the needle body than when the tongue of the slider is not exceeded. . If a step is provided on the branch arm, the rear side of the step is directed upward in the needle groove. If the branch arm tries to be accommodated in the needle groove so that the rear part of the step does not go out of the needle groove, the needle groove becomes deep. If the step is provided only on the rear arm and the step is not provided on the branch arm, the needle groove may not be deepened.

  Further, according to the present invention, the slider tongue is moved over the hook of the needle body to the tooth opening, and the movement as the transfer side of the transfer to the needle bed side facing the tooth opening is performed. Can be reliably guided by a cam.

FIG. 1 is a side sectional view showing a schematic configuration of a compound needle 11 accommodated in a needle groove 10 as one embodiment of the present invention. FIG. 2 is a side view showing the slider 13, the needle jack 6 and the needle body 2 which are the main components of the compound needle 11 of FIG. 1. FIG. 3 is a side view showing a state where the rear arm 15c of the base body 15 of the slider 13 of the compound needle 11 of FIG. 1 is inserted into the gap between the branch arm 6d of the needle jack 6 and the front arm 6a. FIG. 4 is a plan view showing an example of a cam for operating the compound needle 11 of FIG. 1 as a transfer side, together with a locus 25 of the bat 15b of the base body 15 of the slider 13 and a locus 26 of the butt of the needle jack 6. FIG. FIG. 5 is a side view showing a case of the compound needle 1 similar to the related art in a state where the rear arm 5c of the base body 5 of the slider 3 is inserted into the gap between the branch arm 6d of the needle jack 6 and the front arm 6a. .

  Hereinafter, a compound needle 11 as an embodiment of the present invention will be described with reference to FIGS. In the compound needle 11, parts corresponding to the compound needle 1 shown in FIG. In addition, parts that are not described in the drawings to be described may be referred to with reference numerals previously given.

  FIG. 1 shows a schematic configuration of a compound needle 11 accommodated in a needle groove 10 as an embodiment of the present invention. The needle grooves 10 are formed between needle plates 12b that are erected at regular intervals on the surface of the substrate 12a of the needle bed 12 of the flat knitting machine, and are arranged in parallel in the direction perpendicular to the paper surface. Is done. The compound needle 11 includes a needle body 2, a slider 13, and a needle jack 6. The hook 2a at the front end of the needle body 2 and the tongue 4a at the front end of the slider 13 can be advanced toward the tooth opening 14 side. The advancing and retreating direction of the compound needle 11 with respect to the tooth opening 14 is inclined so that the side of the tooth opening 14 is high and the side away from the tooth opening 14 is low. The slider 13 includes two blades 4 and a base body 15. The base 15 has a sliding contact portion 15a and a butt 15b that are basically equivalent to the sliding contact portion 5a and the bat 5b of FIG. 5, but extends rearward in that a step 15d is provided at the rear portion of the rear arm 15c. This is different from the rear arm 5c. The step 15d is provided in a range where the rear arm 15c and the branch arm 6d face each other in a state where the tongue 4a of the slider 13 does not exceed the hook 2a of the needle body 2. Within this range, with respect to the step 15d, the rear gap S becomes wider and the front gap becomes narrower. Note that these gaps change depending on the state in which the needle jack 6 sinks into the needle groove 10.

  In the needle groove 10, the rear leg 6 e of the needle jack 6 abuts the bottom of the needle groove 10, and the bat 6 b and the bat 15 b of the rear arm 15 c pushed up from below are externally connected from the surface of the needle groove 10. It is resiliently energized to protrude. The bats 6 b and 15 b are subjected to the action of a cam mechanism mounted on a carriage that reciprocates along the needle bed 12 in a direction perpendicular to the paper surface while protruding from the needle groove 10.

  A selector 16 and a select jack 17 are disposed above the leg 6e. The front end portion 17a of the select jack 17 is disposed at a position where the curved portion of the leg 6e is pressed. The selector 16 and the select jack 17 are actuated by a needle selection mechanism mounted on the carriage, and the position of the bat 17b protruding upward from the front end portion 17a of the select jack 17 is predetermined A position, H position, or B position. The needles are selected to be either When the bat 17b is pressed by the action of a presser arranged on the carriage according to each position, the leg 6e is sunk in the needle groove 10, and the bat 6b of the needle jack 6 is also sunk in the needle groove 10.

  FIG. 2 shows a slider 13, a needle jack 6, and a needle body 2 that are main components of the compound needle 11 of FIG. 1. The rear arm 15c of the slider 13 has a step 15d whose rear side is shifted downward. The level difference 15d keeps the rear arm 15c large enough to be smoothly inserted into the gap between the branch arm 6d and the front arm 6a. A small protrusion 6f is provided at the lower portion near the front end of the branch arm 6d.

  FIG. 3 shows a state in which the rear arm 15c of the compound needle 11 of FIG. 1 is inserted into the gap between the branch arm 6d and the front arm 6a. FIG. 3A and FIG. 3B correspond to FIG. 5A and FIG. 5B, respectively, regarding the positional relationship between the hook 2a and the tongue 4a. In FIG. 3 (a), the branch arm 6d and the rear arm 15c including the step 15d are opposed to each other, but the gap between the branch arm 6d and the rear arm 15c is formed by the protrusion 6f near the front end of the branch arm 6d. In some cases, the position is minimum and there is a case of contact. When the needle jack 6 is submerged in the needle groove 10, the rear arm 15c is submerged by the branch arm 6d, and the bat 15b of the base body 15 is also submerged. In FIG. 3B, the branch arm 6d and the rear side of the step 15d face each other with a large gap S therebetween. Since there is a gap S, even if the needle jack 6 is submerged in the needle groove 10, the rear arm 15 c is less likely to sink into the needle groove 10, and the amount that the bat 15 b sinks into the needle groove 10 can be reduced.

  FIG. 4 shows an example of the cam system 20 for operating the compound needle 11 of FIG. 1 as the transfer side. The cam system 20 is mounted on a cam plate on the surface where the carriage faces the needle bed 12, and includes a needle raising cam 21, degree cams 22, 23, a slider guide cam 24, and the like. When operating as the transfer side, the bat 15b of the slider 13 and the bat 6b of the needle jack 6 are guided so as to draw trajectories 25 and 26, respectively. Such trajectories 25 and 26 are determined by the action of the welt pressers 27a, 27d; 28a, 28d and the tack pressers 27b, 27c; 28b, 28c arranged in the A position and the H position together with the cam. The These pressers are movable and can be switched between action and non-action. In the case of the figure, only the tack pressers 27c and 28c act, and other pressers are set not to act. However, the B-position fixed presser 29 is set to always act.

  When the carriage moves to the left, if the needle is selected at the A position or the H position, the bats 15b and 6b are independently guided by the cam until the middle from the phase 30 to the phase 31. The bat 6b enters the cam path 21a at the phase 31 and reaches the maximum advance position until the phase 32, and the tongue 4a advances into the tooth opening 14 together with the hook 2a. Even if the needle body 2 starts to retract from the tooth opening 14 along the locus 26, the tongue 4 a that locks the stitch remains in the tooth opening 14. When the butt 15b is guided to the cam path 24a by the slider guide cam 24, the tongue 4a further advances.

  From the phase 32, the bat 6b is sunk by the action of the welt presser 27c or the welt presser 28c, and is guided laterally by the cam path 21b. The bat 15b is guided by the cam path 24b, and until the phase 33, the slider 13 operates as a transfer side. Since the tongue 4a has advanced beyond the hook 4a into the tooth opening 14, as shown in FIG. 3B, the rear arm 15c is opposed to the branch arm 6d with a gap S on the rear side of the step 15d. Yes. Even if the butt 6 b is submerged in the needle groove 10 by the welt pressers 27 c and 28 c, the rear arm 15 c is less likely to sink in the needle groove 10. Since the amount of protrusion of the bat 15b to the outside of the needle groove 10 is difficult to reduce, it is possible to secure a sufficient allowance for the slider guide cam 24 and to reliably perform the operation as the transfer side. .

  Although the step 15d is provided at the rear part of the rear arm 15c, a step that is shifted upward may be provided at the front part of the branch arm 6d. Further, a step may be provided on both the rear part of the rear arm 15c and the front part of the branch arm 6d. That is, at least one of the rear arm 15c and the branch arm 6d has a gap that is opposed to the tongue 4a when the tongue 4a extends forward beyond the hook 2a than when the tongue 4a does not exceed the hook 2a. What is necessary is just to provide the level | step difference which becomes wide.

  However, if a step is provided in the branch arm 6d, the rear side of the step is directed upward in the needle groove 10. If the branch arm 6d prevents the rear side of the step from coming out of the needle groove 10, the needle groove 10 becomes deeper. If the step 15d is provided only in the rear arm 15c and the step is not provided in the branch arm 6d, it is not necessary to make the needle groove 10 deeper.

2 needle body 2a hook 4 blade 4a tongue 6 needle jack 6a front arm 6b butt 6d branch arm 10 needle groove 11 compound needle 12 needle bed 13 slider 14 tooth opening 15 base 15b butt 15c rear arm 15d step 20 cam system 21 needle raising cam 24 Slider guide cam 25, 26 locus

Claims (3)

A needle body capable of advancing and retracting the hook at the front end of the needle stem to the mouth,
A slider that is formed by combining a base body and a blade that can be divided into two pieces, opens and closes the hook mouth with the tongue at the front end of the blade, and can also advance the tongue to the tooth mouth over the hook,
The front end of the front arm includes a needle jack coupled to the rear of the needle stem of the needle body;
The needle body, slider, and needle jack are accommodated in a needle groove arranged in parallel with the needle bed,
Needle jack
A bat protruding in the direction of rising from the needle groove at the rear end of the front arm,
A branch arm that branches from the middle of the bat and extends forward;
The base of the slider
A bat protruding in the direction of rising from the inside of the needle groove,
A rear arm extending rearward from the bat and inserted between the branch arm of the needle jack and the front arm;
At least one of the rear arm of the base of the slider and the branch arm of the needle jack is within a range where the rear arm and the branch arm face each other with the slider tongue not facing the hook of the needle body. A flat knitting characterized in that the opposing gap becomes wider at the rear side and a step which becomes narrower at the front side at a position ahead of the opposing part in a state where the tongue extends forward beyond the hook of the needle body Compound needle.   2. The compound needle of a flat knitting machine according to claim 1, wherein the step is provided only on a rear arm of a base of the slider.   3. The state in which the tongue of the slider advances forward beyond the hook, and the stitch is locked to the tongue and advanced to the tooth opening to operate as a transfer transfer side. Compound needle of flat knitting machine.

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