JP5618778B2 - Compound needle of flat knitting machine - Google Patents

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 flat knitting machines.

  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.

  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 to prevent 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 using the curved portion 4e for pressing at the time of clear as shown in FIG. 5, the thickness of the side wall of the needle stem 2b and the thickness of the blade 4 is reduced, so that 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 portion, and a slider groove formed in the needle stem behind the hook,
It has two blades formed with tongues that can lock the stitches at the front, and at least a part of the blades are accommodated in the slider groove of the needle body and guided in the front-rear direction. The tongue includes a slider that opens and closes the hook,
The needle body
A closing portion adjacent to the rear side of the hook and having a bottom surface in a section of a slider groove that accommodates a tongue in a state of closing the hook at the tip portion;
On the rear side of the closing part, the hook is released by retreating with respect to the needle body, and in the clear state where the tongue retreating from the hook is received by the tongue, the slider groove part that accommodates the tip part of the tongue has a bottom surface, A clear portion formed so that there is no bottom surface in the portion of the slider groove that accommodates the rear portion of the tongue tip portion;
Above the clear part, it is formed so as to project forward from the back with a width that covers at least the slider groove, and a projecting part provided with a pressing part on the lower surface,
Have
The two blades extend from the rear of the tongue, the arm allowing the tongue to move up and down due to elastic bending, and the upper end of the arm is located above the slider groove within the width of the slider groove. And has an inclined portion that decreases in height from the front to the rear, abutting against the pressing portion on the lower surface of the overhang portion of the needle body ,
In the front part of the blade, adjacent to the rear of the tongue, the blade has a curved part that opens to the outside of the slider groove,
The arm extends backward beyond the overhang of the needle body,
The inclined portion is formed on the lower side behind the front end of the arm.
This is a compound needle of a flat knitting machine .

  According to the present invention, the tongue is accommodated in the clear portion of the slider groove in a clear state in which the slider moves backward with respect to the needle body to release the hook, and the stitch that retracts from the hook is received by the tongue. Since the overhanging portion is formed above the clear portion so as to protrude forward from the back of the needle body with a width that covers at least the slider groove, the inclined portion of the blade is a pressing portion provided on the lower surface of the overhanging portion. The tongue comes into contact with the pressure and sinks into the slider groove. Since the pressing is performed within the width of the slider groove, it is possible to surely guide the tongue to sink into the slider groove even if the needle body is thin.

  Since the inclined portion is pressed by the pressing portion on the lower surface of the overhang portion, if the slider groove is processed from below the needle stem, the influence of the processing can be prevented from reaching the lower surface of the overhang portion. In the clear portion, since the slider groove has no bottom surface, dust and the like are easily discharged from the slider groove, and the possibility of malfunction due to dust clogging can be reduced.

Further , since the arm extends rearward beyond the upper portion of the overhanging portion, even if a curved portion is provided following the tongue, a composite needle is formed by easily combining a slider with respect to the needle body from above. be able to. When clearing, the pressing of sinking the tongue into the slider groove is performed by an inclined portion provided at the rear part near the front end of the arm, and can be reliably performed within the width of the slider groove.

FIG. 1 is a partial side view and a front sectional 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 a reference example 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 a reference example of the present invention. Description of matters common to the compound needle 11 and the compound needle 21 is shown together both reference marks, but collectively performed, the portion to be used for each is not always possible combination.

  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 and reference examples , respectively. The compound needles 11, 21 include needle bodies 12, 22 and sliders 13, 23. The sliders 13, 23 include two blades 14, 24 and bases 15, 25. 6 is also included. Although the needle jack 6 is also included in the compound needle 21 in the same manner as the compound needle 11, illustration is omitted. 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 in the vicinity of the front end, but the bottom surfaces 12d and 22d are not provided at the rear, and the projecting portions 12e and 22e are projected from the rear above the slider grooves 12c and 22c. Is formed. The overhang portions 12e and 22e have a gap between the lower surfaces of the needle stems 12b and 22b in which the slider grooves 12c and 22c are formed, and pressing portions 12f and 22f are formed on the lower surfaces of the overhang portions 12e and 22e. Provided. 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. Coupling portions 14c and 24c are provided near the rear ends of the arms 14b and 24b, and are coupled to the coupling portions 15c and 25c provided near the front ends of the arms 15b and 25b of the bases 15 and 25. In the compound needle 11, a curved portion 14e is provided following the tongue 14a. Following the tongues 14a and 24a, inclined portions 14f and 24f whose height decreases from the front to the rear are provided, respectively. These portions are provided at the tips of the arms 14b and 24b as the heads 14g and 24g of the blades 14 and 24, and the arms 14b and 24b can be bent and moved up and down in the slider grooves 12c and 22c. Yes.

  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 heads 14g and 24g of the blades 14 and 24 are accommodated in the closed portions 12h and 22h of 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. The tip of the abutment comes into contact with the tips of the hooks 12a and 22a, and the mouth is closed. The arm 14b of the compound needle 11 is suppressed from swinging in the width direction of the slider groove 12c in a state where the upper part is inserted into the arm groove 15d provided in the base body 15. The arm 24b of the compound needle 21 is restrained from swinging in the width direction of the slider groove 22c in a state in which the steady-state projection 24d at the front end is accommodated in the projection accommodating portion 25a provided at the front end of the base body 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 heads 14g and 24g of the blades 14 and 24 are accommodated in the clear portions 12i and 22i of the slider grooves 12c and 22c, and the inclined portions 14f and 24f are pressed by the pressing portions 12f and 22f on the lower surfaces of the overhang portions 12e and 22e. The tongues 14a and 24a are submerged in the slider grooves 12c and 22c, and the stitches can be smoothly retracted along the needle stems 12b and 22b. Since the arm 14b of the compound needle 11 extends rearward beyond the upper portion of the overhanging portion 12e, the compound needle can be combined by combining the slider 13 with the needle body 12 from above even if the curved portion 14e is provided following the tongue 14a. 11 can be formed. Since the inclined portion 14f is formed on the lower side behind the front end of the arm 14b, even if the arm 14b passes over the overhanging portion 12e, the inclined portion 14f is moved by the pressing portion 12f on the lower surface of the overhanging portion 12e. It can be surely pressed. The compound needle 21 is not provided with a portion corresponding to the curved portion 14e that swells outward from the width of the slider groove 22c. Therefore, in the compound needle 21, even if the slider groove 22c is formed to the rear of the overhanging portion 22e, the blade 24 can be inserted through the underside of the overhanging portion 22e to the front and easily assembled.

  FIG.1 (c) shows the cross-sectional structure seen from the cut surface line CC of FIG.1 (b). Since the overhang portion 12e is formed over the entire width of the needle stem 12b, the upper end of the inclined portion 14f of the blade 14 on which the two sheets are overlapped easily comes into contact, and the inclined portion is formed by the pressing portion 12f on the lower surface of the overhang portion 12e. 14f can be reliably pressed from above. The slider groove 12c is processed from above the needle stem 12b in the closed portion 12h, and is processed from below the needle stem 12b in the clear portion 12i. Since the clear portion 12i is opened downward, dust can be discharged from the slider groove 12c during operation as a knitting needle. For the compound needle 21 as well, in the cross-sectional configuration of the clear portion 22i, similarly, the overhang portion 22e is formed over the entire width of the needle stem 22b, and the inclined portion 24f of the blade 24 where two sheets are overlapped is pressed from above. It can be easily pressed. Further, the slider groove 22c formed in the same manner as the slider groove 12c of the compound needle 11 is also opened downward in the clear portion 22i, so that processing and dust discharge can be easily performed.

  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 shows the configuration of the blade 14 and the base body 15. An arm 15b extends and a bat 15e is erected on the rear side of the base body 15 in FIG. FIG. 2B shows a state in which the blade 14 and the base body 15 are combined as the slider 13 by the coupling of the coupling portions 14c and 15c. FIG. 2C shows a state where the needle body 12 and the needle jack 6 are combined. The needle body 12 performs a main operation as a knitting needle by driving to a bat 6 b provided in the needle jack 6. FIG. 4A shows the configuration of the blade 24 and the base body 25. Although an arm 25b extends and a bat that receives driving as the slider 23 is provided behind the base body 25 in FIG. FIG. 4B shows a state in which the blade 24 and the base body 25 are combined as the slider 23 by the coupling of the coupling portions 24c and 25c. FIG. 4C shows the needle body 22.

11, 21 Compound needle 12, 22 Needle body 12a, 22a Hook 12b, 22b Needle stem 12c, 22c Slider groove 12e, 22e Overhanging portion 12f, 22f Pressing portion 12h, 22h Closing portion 12i, 22i Clearing portion 13, 23 Slider 14, 24 blade 14a, 24a tongue 14e curved portion 14f, 24f inclined portion 15, 25 base

Claims (1)

A needle body having a hook at the front and a slider groove formed in the needle stem behind the hook;
It has two blades formed with tongues that can lock the stitches at the front, and at least a part of the blades are accommodated in the slider groove of the needle body and guided in the front-rear direction. The tongue includes a slider that opens and closes the hook,
The needle body
A closing portion adjacent to the rear side of the hook and having a bottom surface in a section of a slider groove that accommodates a tongue in a state of closing the hook at the tip portion;
On the rear side of the closing part, the hook is released by retreating with respect to the needle body, and in the clear state where the tongue retreating from the hook is received by the tongue, the slider groove part that accommodates the tip part of the tongue has a bottom surface, A clear portion formed so that there is no bottom surface in the portion of the slider groove that accommodates the rear portion of the tongue tip portion;
Above the clear part, it is formed so as to project forward from the back with a width that covers at least the slider groove, and a projecting part provided with a pressing part on the lower surface,
Have
The two blades extend from the rear of the tongue, the arm allowing the tongue to move up and down due to elastic bending, and the upper end of the arm is located above the slider groove within the width of the slider groove. And has an inclined portion that decreases in height from the front to the rear, abutting against the pressing portion on the lower surface of the overhang portion of the needle body ,
In the front part of the blade, adjacent to the rear of the tongue, the blade has a curved part that opens to the outside of the slider groove,
The arm extends backward beyond the overhang of the needle body,
The inclined portion is formed on the lower side behind the front end of the arm.
A compound needle of a flat knitting machine.

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