JP2012132126A - Compound needle for flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compound needle for a flat knitting machine, which enables reliable guidance for sinking a tongue in a slider groove upon clearing in which a slider including two blades forming the tongue is retracted with respect to a needle body.SOLUTION: Upon clearing as shown in (b), a rear part 16c is pushed up by a cam 12e, and a swinging member 16 is thereby swung with an engagement part between a lower swinging joint 16a and an upper swinging joint 15c of a base 15 as a fulcrum. Blades 14 are moved down to sink a tongue 14a in a slider groove 12c, so that a stitch can be smoothly retracted along a needle stem 12b. The cam 12e is provided behind the slider groove 12c so as to be formed to have a width equal to that of a needle body 12 without being affected by processing to form the slider groove 12c. The swinging member 16, on which the cam 12e acts, can be made thicker than the blade 14 so as to be reliably pushed up to sink the tongue 14a in the slider groove 12c.

Description

  The present invention relates to a needle body that has a hook that is housed in a needle groove arranged in parallel with the needle bed, and that moves forward and backward to a tooth opening facing the tip side of the needle bed, and a slider having a tongue that opens and closes the hook by relative movement with respect to the needle body. The present invention relates to a compound needle for a flat knitting machine.

  Conventionally, in a flat knitting machine, a hook provided in a needle groove arranged in parallel with the needle bed, and a hook provided at the tip of the knitting needle is advanced and retracted to the mouth of the needle bed facing the tip of the needle bed. While receiving, knitted fabric. As the knitting needle, a combination needle that opens and closes the hook with a slider is used together with a latch needle that opens and closes the hook with a latch.

  In a flat knitting machine, needle beds are provided on both sides of the front and rear sides of the tooth opening to be opposed to each other, and each needle bed is inclined such that the tooth opening side is high and the distance from the tooth opening is low. In the following description, the direction is determined with reference to the individual needle bed, the front side is the front, the rear side is the rear side, and the direction in which the knitting needle moves within the needle groove is the front-rear direction. Further, the direction in which the needle floats in the needle groove is defined as the upper direction, and the direction in which it sinks is defined as the lower direction. Further, the width direction is the width of the needle groove, that is, the direction between the side walls.

  FIG. 5 shows a schematic configuration of a main part of a conventional compound needle 1 in a state of being accommodated in a needle groove (see, for example, Patent Document 1). However, illustrations of the configuration relating to the needle bed and the needle groove are omitted. The compound needle 1 includes a needle body 2 and a slider 3. The slider 3 includes two blades 4 and a base body 5. The compound needle 1 also includes a needle jack 6. The main components of the composite needle 1 are formed by processing a metal plate.

  The needle body 2 has a hook 2a at the front end and a needle stem 2b following the hook 2a. The needle stem 2b is provided with a slider groove 2c in the middle in the width direction perpendicular to the paper surface. The slider groove 2c has a bottom surface 2d. A notch 2e is provided on the side wall rising from the bottom surface 2d on both sides in the width direction, and a fork portion 2f is formed on the top of the notch 2e. On the rear end side of the needle body 2, a coupling portion 2g is provided. The blade 4 is accommodated in the slider groove 2c of the needle body 2 at least at the lower portion in a state where the two blades overlap each other. A tongue 4a is provided at the front end of the blade 4, and an arm 4b extends from the rear of the tongue 4a. A coupling portion 4c is provided near the rear end of the arm 4b, and an anti-sway projection 4d is provided near the front end. The base body 5 is provided with a protrusion accommodating portion 5a for accommodating a steady-state protrusion 4d of the blade 4 near the front end, and an arm 5b extends rearward. The substrate 5 also includes a coupling portion 5 c that couples to the coupling portion 4 c of the blade 4, and functions as the slider 3 in a coupled state between the blade 4 and the substrate 5. A coupling portion 6 a provided at the front end of the needle jack 6 is fitted into the coupling portion 2 g provided near the rear end of the needle body 2.

  Fig.5 (a) shows the state which closed the hook of the hook 2a with the tongue 4a. FIG. 5B shows a clear state in which the slider 3 is retracted with respect to the needle body 2 and the stitches locked in the hook 2a can be transferred to the tongue 4a from the opening of the open hook 2a. Show. The tongue 4a is submerged in the slider groove 2c, and it is necessary not to cause any troubles such as being caught on the stitch that retreats along the needle stem 2b. In the illustrated compound needle 1, the upper part of the blade 4 following the tongue 4a is opened on both sides in the width direction to form a curved portion 4e, and the stitches that are locked to the hook 2a are received by a transfer jack from above. Is planned. In FIG. 5B, the curved portion 4e is guided to the notch 2e facing the fork portion 2f, and the curved portion 4e is pressed downward on the lower side of the fork portion 2f to sink the tongue 4a. In the slider 3 using the two blades 4, the tongue 4a can advance to the tooth mouth over the hook 2a.

  FIG.5 (c) shows the cross-sectional structure seen from the cut surface line CC of FIG.5 (b). Since two blades 4 are overlapped, the curved portion 4e is open on both sides of the center line 1a. Notches 2e and forks 2f are provided on both side walls of the slider groove 2c provided on the needle stem 2b, and press the curved portion 4e downward.

Japanese Patent No. 3577038

  As shown in FIG. 5 (c), in the needle stem 2b of the needle body 2, the slider groove 2c is formed in the middle in the width direction, and the curved portion 4e of the blade 4 is guided to the notch 2e provided in the side wall to clear the needle body 2b. Sometimes the tongue 4a is submerged in the slider groove 2c. Since the slider groove 2c is formed by performing groove processing from the upper surface side of the needle body 2, the fork portion 2f is simultaneously processed to form a thin plate-like wall surface. The blade 4 is also a thin plate, and the lower surface of the fork portion 2f and the curved portion 4e are engaged with each other by the thin plates.

  In a flat knitting machine, when the arrangement density of knitting needles becomes large and the arrangement pitch becomes small, it is called a fine gauge. In the fine gauge, the width of the needle groove is reduced, and the width of the needle body 2 that can be accommodated in the needle groove is also reduced. In the configuration in which the curved portion 4e is used for pressing at the time of clearing as shown in FIG. 5, since the thickness of the side wall of the needle stem 2b and the blade 4 is reduced, the lower surface of the fork portion 2f and the upper end of the curved portion 4e are in contact with each other. It becomes difficult to touch.

  It is an object of the present invention to provide a flat knitting machine capable of surely guiding a tongue to sink into a slider groove at the time of clearing a slider in which the tongue is formed by two blades with respect to the needle body. It is to provide a compound needle.

The present invention has a needle body having a hook at the front end, and a slider groove formed in the needle stem behind the hook,
It has two blades with tongues that can lock stitches at the front end. At least part of the blades are received in the slider grooves of the needle body and guided in the front-rear direction. In a compound needle of a flat knitting machine including a slider that opens and closes a hook,
The slider
A base body having a linear shape extending along the front-rear direction, provided with an upper swing joint on the lower side of the front part, and movable in the front-rear direction above the needle body;
A lower oscillating joint having a hook shape extending in the front-rear direction below the front portion of the base body and having a shape that fits the upper oscillating joint of the base body is provided above the intermediate portion. An oscillating member that engages with the oscillating joint and is coupled to the base body in a state in which oscillating displacement is possible, and the rear part of the blade is fixed to the lower side in front of the lower oscillating joint;
The needle body
When the slider moves backward with respect to the needle body, the tongue releases the hook, and the knitting that is retracted from the hook is received by the tongue, the swinging member is used as the fulcrum at the engaging portion of the lower swinging joint and the upper swinging joint. It has a cam that swings and displaces relative to the base and sinks the tip of the tongue in the slider groove, behind the slider groove,
One of the upper rocking joint and the lower rocking joint is a plate-like convex portion protruding to the other side, and the convex portion has an increased portion in which the length in the front-rear direction increases from the base end,
The other of the upper rocking joint and the lower rocking joint is a plate-like part having a concave part in which one convex part can be freely inserted from the width direction, and the opening part where the concave part faces the base end of the convex part is The interval in the direction is smaller than the length of the increased part of the convex part,
This is a compound needle of a flat knitting machine.

Further, in the present invention, the cam is formed at the rear portion of the range where the swing member of the slider relatively moves in the needle body so as to act on the rear end of the swing member from below.
It is characterized by that.

Further, in the present invention, the needle body is formed with a guide portion that is recessed rearward so as to guide the rear portion of the swing member from above and below,
The cam is formed at the rear part of the guide part,
It is characterized by that.

According to the present invention, the tongue of the slider is formed in the front part of the two blades, and at least a part of the blade is accommodated in the slider groove of the needle body. The two blades are fixed on the lower side in front of the lower swing joint provided at the rear side above the middle portion of the swing member. The lower swing joint is engaged with an upper swing joint provided on the base of the slider. The engaging portion serves as a fulcrum at which the swing member swings and displaces with respect to the base. At the time of clearing when the slider moves backward with respect to the needle body, a cam that acts on the swing member and sinks the tip of the tongue into the slider groove is provided behind the slider groove of the needle body. Since the cam is outside the slider groove, it can be formed with the same width as the needle body without being affected by the process of forming the slider groove. Since the swing member on which the cam acts can be made thicker than the blade, it is possible to surely push up the tongue of the blade fixed to the swing member in the slider groove.
The engagement between the base and the swing member is performed by loosely inserting the plate-like convex portion into the plate-like concave portion, so that the engaging portion is formed without overlapping the convex portion and the concave portion in the width direction. . Even if the width of the needle groove is narrowed and the thickness of the needle main body and the swinging member accommodated in the needle groove is reduced, there is no need to reduce the thickness of the overlapping portion for forming the engaging portion. A swing fulcrum can be obtained.

  Further, according to the present invention, the rear end of the swinging member of the slider can be actuated from below by the cam provided on the needle body, so that the tip end of the tongue can be reliably swung so as to be submerged in the slider groove.

  Further, according to the present invention, the rear portion of the swing member of the slider is sandwiched from above and below by the guide portion formed on the needle body, and the guide for swinging the swing member when the slider advances and retreats with respect to the needle body is ensured. Can be done.

FIG. 1 is a partial side view showing a schematic configuration of a compound needle 11 as an embodiment of the present invention. FIG. 2 is a side view showing main components constituting the compound needle 11 of FIG. 1 and their combined state. FIG. 3 is a partial side view showing a schematic configuration of a compound needle 21 as another embodiment of the present invention. FIG. 4 is a side view showing the main parts constituting the compound needle 21 of FIG. 3 and their combined state. FIG. 5 is a partial side view and a front sectional view showing a schematic configuration of a conventional compound needle 1.

  1 and 2 show a schematic configuration of a compound needle 11 of a flat knitting machine as an embodiment of the present invention. 3 and 4 show a schematic configuration of the compound needle 21 of the flat knitting machine as another embodiment of the present invention. The description of the matters common to the compound needle 11 and the compound needle 21 will be made collectively with both reference marks added together, but the parts used in the respective embodiments are not necessarily usable together.

  In each drawing, the same reference numerals are given to the portions corresponding to the portions described above, and the overlapping description may be omitted. Further, reference numerals that are not attached to the drawings to be described may be referred to and those that are added to the above-described drawings may be referred to.

  1 and 3 show schematic configurations of compound needles 11 and 21 as examples of the present invention, respectively. The compound needles 11 and 21 include needle bodies 12 and 22 and sliders 13 and 23. The sliders 13 and 23 include two blades 14 and 24, bases 15 and 25, and swing members 16 and 26, and are further combined. Needles 11 and 21 also include a needle jack 6. In the needle bodies 12 and 22, slider grooves 12c and 22c are provided in the needle stems 12b and 22b following the hooks 12a and 22a at the front end. The slider grooves 12c and 22c have bottom surfaces 12d and 22d. However, the slider groove 12c is formed inside the needle stem 12b, and the slider groove 22c is formed outside the needle stem 22b. Cams 12e and 22e are formed behind the slider grooves 12c and 22c. Joint portions 12g and 22g are provided at the rear portions of the needle bodies 12 and 22, and are joined to the joint portion 6a of the needle jack 6.

  The blades 14 and 24 are in a state in which the two are overlapped, and at least the lower part is accommodated in the slider grooves 12c and 22c, and the front ends thereof are the tongues 14a and 24a, and the arms 14b and 24b from the rear of the tongues 14a and 24a, respectively. Provided. Near the rear ends of the arms 14b and 24b, coupling portions 14c and 24c are provided. At the intermediate portions of the arms 14b and 24b, the anti-sway projections 14d and 24d project upward. Stepped shoulder portions 14e and 24e are formed at the end portions of the tongues 14a and 24a.

  The bases 15 and 25 are movable in the front-rear direction above the needle bodies 12 and 22, and are provided with protrusion accommodating portions 15 a and 25 a for accommodating the steady-state protrusions 14 d and 24 d of the blades 14 and 24 at the front ends. Upper swinging joints 15c and 25c are provided below the front portions of the arms 15b and 25b having a linear shape extending along the axis. Sliding pieces 17 and 27 are provided on one side surfaces of the bases 15 and 25 to cause sliding resistance by sliding contact with the side surfaces when sliding in the front-rear direction in the needle groove.

  The swing members 16 and 26 have a hook shape extending in the front-rear direction below the front portions of the bases 15 and 25, and have shapes that fit the upper swing joints 15c and 25c of the bases 15 and 25 on the upper side of the intermediate part. The lower rocking joints 16a and 26a are provided. The swinging members 16 and 26 are connected to the bases 15 and 25 in a state where the lower swinging joints 16a and 26a engage with the upper swinging joints 15c and 25c of the bases 15 and 25 so that the swinging displacement is possible. . Fixing portions 16b and 26b for fixing the coupling portions 14c and 24c of the rear portions of the blades 14 and 24 are provided in front of the lower swinging joints 16a and 26a and in the vicinity of the front ends of the swinging members 16 and 26. The positions of the blades 14 and 24 whose rear portions are fixed to the coupling portions 14c and 24c are lower than the lower swinging joints 16a and 26a with respect to the swinging members 16 and 26.

  FIG. 1A and FIG. 3A show a state where the hooks of the hooks 12a and 22a are closed by the tongues 14a and 24a. The blades 14 and 24 are accommodated in the slider grooves 12c and 22c, and are lifted from the bottom surfaces 12d and 22d to float inside the slider grooves 12c and 22c, and the tips of the tongues 14a and 24a abut against the tips of the hooks 12a and 22a. Close the mouth. The vibration preventing projections 14d and 24d of the blades 14 and 24 are restrained from swinging in the width direction of the slider grooves 12c and 22c in a state where the upper portions are accommodated in the projection accommodating portions 15a and 25a provided on the bases 15 and 25. The tongues 14a and 24a can be advanced forward beyond the hooks 12a and 22a.

  FIG. 1B and FIG. 3B show the state at the time of clear. The rear ends 16d and 26d of the swinging members 16 and 26, which are located behind the lower swinging joints 16a and 26a, are pushed up by the cams 12e and 22e of the needle bodies 12 and 22, respectively. The cams 12e and 22e are provided at positions at the rear of the range in which the swing members 16 and 26 move relative to the needle bodies 12 and 22, respectively. Since this position is behind the slider grooves 12c and 22c of the needle bodies 12 and 22, the cams 12e and 22e are equivalent to the needle bodies 12 and 22 without being affected by the processing of the slider grooves 12c and 22c. Can be formed with a width. The swing members 16 and 26 on which the cams 12e and 22e act can be made thicker than the single blade 14 and 24, and the tongues 14a and 24a of the blades 14 and 24 fixed to the swing members 16 and 26 can be Pushing up for sinking into the slider grooves 12c and 22c can be performed reliably.

  The rocking members 16 and 26 are rocked and displaced with respect to the bases 15 and 25 with the engaging portions of the lower rocking joints 16a and 26a and the upper rocking joints 15c and 25c as fulcrums. Since the tongues 14 and 24 are fixed to the front portions of the swinging members 16 and 26, the swinging displacement that pushes up the rear ends 16d and 26d of the swinging members 16 and 26 causes the tongues 14a and 24a to slide into the slider groove. The stitches can be sunk into 12c and 22c, and the stitches can be smoothly retracted along the needle stems 12b and 22b.

  As shown in FIG. 3, the needle main body 22 of the compound needle 21 has a state in which the hook 24a is closed at the tip of the tongue 24a as shown in FIG. A guide portion 22h that is recessed rearward is formed so as to guide the rear portion 26c of the swing member 26 from above and below in the range up to the time of clearing. The guide portion 22h has protrusions 22i and 22j on the upper side and the lower side of the recess, respectively. The protrusions 22i and 22j are in contact with the rear portion 26c or the rear end 26d of the swing member 26 of the slider 23 from above and below, and can reliably guide the swing member 26 to swing as the slider 23 advances and retreats. .

  2 and 4 show the configuration of the main components of the compound needles 11 and 21 shown in FIGS. 1 and 3. FIG. 2A and FIG. 4A show the configuration of the bases 15 and 25. Arms 15b and 25b are extended behind the bases 15 and 25, bats and the like are erected, and are driven as sliders 13 and 23. The upper swing joints 15c and 25c are plate-like convex portions protruding downward, and the convex portion has an increased portion where the length La in the front-rear direction is larger than the base end. FIG. 2B and FIG. 4B show the configuration of the swing members 16 and 26. The lower rocking joints 16a and 26a are plate-like portions having recesses into which the convex portions of the upper rocking joints 15c and 25c can be loosely inserted from the width direction. The front-rear direction interval Lb is smaller than the length La of the increased portion of the convex portion. The lower swing joints 16a and 26a can be formed as convex portions, and the upper swing joints 15c and 25c can be formed as concave portions.

  2C and 4C show the configuration of the blades 14 and 24. FIG. The blades 14 and 24 are thin plates, and two are used. The shoulder portions 14e and 24e can be bent so as to open upward as in the bending portion 4e of FIG.

  2D and 4D, as the sliders 13 and 23, the blades 14 and 24, the bases 15 and 25, and the swing members 16 and 26 are swung with the coupling portions 14c and 24c of the blades 14 and 24. The combination of the members 16 and 26 with the fixed portions 16b and 26b and the engagement between the lower swing joints 16a and 26a of the swing members 16 and 26 and the upper swing joints 15c and 25c of the bases 15 and 25. It shows the state. The engagement between the base members 15 and 25 and the swinging members 16 and 26 is performed by loosely inserting the plate-like convex portions into the plate-like concave portions, so that the engaging portions are formed without overlapping in the width direction. . Even if the width of the needle groove is reduced and the plate thickness of the needle main bodies 12 and 22 and the swinging members 16 and 26 accommodated in the needle groove is reduced, the convex portion and the concave portion are not overlapped in the engaging portion, so that the plate thickness is increased. There is no need to make the thickness further thinner, and a reliable swing fulcrum can be obtained.

11, 21 Compound needle 12, 22 Needle body 12a, 22a Hook 12b, 22b Needle stem 12c, 22c Slider groove 12e, 22e Cam 13, 23 Slider 14, 24 Blade 14a, 24a Tongue 14c, 24c Joint portion 15, 25 Base 15c , 25c Upper swing joint 16, 26 Swing member 16a, 26a Lower swing joint 16c, 26c Rear portion 22h Guide portion

Claims (3)

A needle body having a hook at the front end and a slider groove formed in the needle stem behind the hook;
It has two blades with tongues that can lock stitches at the front end. At least part of the blades are received in the slider grooves of the needle body and guided in the front-rear direction. In a compound needle of a flat knitting machine including a slider that opens and closes a hook,
The slider
A base body having a linear shape extending along the front-rear direction, provided with an upper swing joint on the lower side of the front part, and movable in the front-rear direction above the needle body;
A lower oscillating joint having a hook shape extending in the front-rear direction below the front portion of the base body and having a shape that fits the upper oscillating joint of the base body is provided above the intermediate portion. An oscillating member that engages with the oscillating joint and is coupled to the base body in a state in which oscillating displacement is possible, and the rear part of the blade is fixed to the lower side in front of the lower oscillating joint;
The needle body
When the slider moves backward with respect to the needle body, the tongue releases the hook, and the stitch that moves backward from the hook is received by the tongue, the swinging member is used as the fulcrum at the engaging part of the lower swinging joint and the upper swinging joint. It has a cam that swings and displaces relative to the base and sinks the tip of the tongue in the slider groove, behind the slider groove,
One of the upper rocking joint and the lower rocking joint is a plate-like convex portion protruding to the other side, and the convex portion has an increased portion in which the length in the front-rear direction increases from the base end,
The other of the upper rocking joint and the lower rocking joint is a plate-like part having a concave part in which one convex part can be freely inserted from the width direction, and the opening part where the concave part faces the base end of the convex part is The interval in the direction is smaller than the length of the increased part of the convex part,
A compound needle of a flat knitting machine. The cam is formed to act on the rear end of the swing member from below at a rear portion of the needle body in a range where the swing member of the slider relatively moves.
The compound needle of the flat knitting machine according to claim 1. In the needle body, a guide portion that is recessed backward is formed so as to guide the rear portion of the swing member from above and below,
The cam is formed at the rear part of the guide part,
The compound needle of the flat knitting machine according to claim 2.

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