JP5766430B2 - Compound needle of flat knitting machine - Google Patents

Description

  The present invention relates to a compound needle of a flat knitting machine that is accommodated in a needle groove formed on a needle bed of a flat knitting machine and that opens and closes a hook with a slider.

  Conventionally, in the flat knitting machine, a large number of needle grooves are arranged in parallel in the needle bed, and the knitting needles housed in the needle grooves are driven so that the hooks at the tips advance and retreat to the mouths of the needle bed ends, The knitted fabric is knitted with the knitting yarn supplied to the hook at the mouth. As a knitting needle, there is a compound needle that opens and closes a hook with a slider. In particular, if the tongue, which is the part that opens and closes the hook with the slider, is formed with two blades, the tongue can move beyond the hook, and transfer using the slider is also possible (see, for example, Patent Document 1). .

  In addition, although the needle bed of the flat knitting machine is inclined so that the mouth side is high and becomes low when leaving the tooth opening, in the following explanation, in the following description, the mouth side is the front and the tooth opening is away from the mouth. Define the front-rear direction with the side as the back. In addition, as a vertical direction perpendicular to the front-rear direction, a direction floating in the needle groove is defined as an upper direction, and a direction sinking in the needle groove is defined as a lower direction. Furthermore, let the width direction of the needle groove seen from the front be the left-right direction. Furthermore, illustration of the needle bed and the needle groove is omitted.

  FIG. 3 shows a partial configuration of a slider of a compound needle in which a tongue is formed at the tips of two blades as disclosed in Patent Document 1 and the like. FIG. 3A shows a left side configuration of the base 1 and a cross-sectional configuration viewed from the cutting plane line AA. The cross-sectional configuration of this portion is asymmetric with respect to the center line 1a. A bat 1b is erected from the rear portion of the base 1 and receives a guide action by a cam mounted on a carriage that moves along the needle bed. The upper coupling portion 1c provided in the middle between the front portion and the rear portion of the base 1 has a longitudinal groove 1d facing the left side and a recess 1e that opens and communicates with both the left and right sides. Between the upper coupling portion 1c and the bat 1b is an arm 1f that can be elastically bent and deformed. The arm 1f is shown with the front-rear direction shortened.

  FIG. 3B shows a planar configuration and a left side configuration of the right blade 2. FIG. 3C shows a planar configuration and a left side configuration of the left blade 3. FIG. 3D shows a planar configuration and a left side configuration of the slider 4. FIG. 3E shows an enlarged view of the connecting portion 5 between the base 1 and the blades 2 and 3 shown in FIG.

  That is, the slider 4 of the composite needle is formed by joining the base body 1 formed by pressing from a metal plate and the two blades 2 and 3 at the joint portion 5. Each blade 2, 3 has tongues 2 a, 3 a at the front part, and the lower part is accommodated in a slider groove formed in a needle body (not shown), and moves relatively back and forth within the slider groove. Then, the hooks of the needle body are opened and closed with the tongues 2a and 3a. The blades 2 and 3 are formed with curved portions 2b and 3b whose upper ends open to the outside of the slider groove, following the tongues 2a and 3b. Lower coupling portions 2 c and 3 c are provided at the rear portions of the blades 2 and 3. The lower coupling portions 2c and 3c have coupling bats 2d and 3d and tail portions 2e and 3e extending rearward. Arms 2f and 3f are provided between the front part where the tongues 2a and 3a and the curved parts 2b and 3b are provided and the rear part where the lower coupling parts 2c and 3c are provided. It is possible to move. The tail portion 3e of the blade 3 bulges laterally so as to be in sliding contact with the side wall of the needle groove to provide sliding resistance. In the joint portion 5, the recess 1e of the base body 1 and the bats 2d and 3d of the blades 2 and 3 are joined, and caulking portions 5a, 5b, and 5c are provided around the joint portion 5 so that a strong joint that cannot be removed is provided. Has been made.

Japanese Patent No. 2946323

  In the connecting portion 5 of the slider 4 shown in FIG. 3, it is necessary to connect the base body 1 and the two blades 2 and 3 with high precision, but the bats 2d and 3d and the tail portions 2e and 3e of the lower connecting portions 2c and 3c. On the other hand, the longitudinal groove 1d and the recess 1e of the upper coupling portion 1c to which these are coupled are formed slightly larger. For this reason, after inserting the bats 2d and 3d and the tails 2e and 3e into the longitudinal grooves 1d and the recesses 1e, it is necessary to perform a post-process work for positioning and fixing again. The positioning is performed, for example, by bringing the upper surfaces of the tail portions 2e and 3e into contact with the upper wall surface of the longitudinal groove 1d. When the blades 2 and 3 are moved relative to the needle body, the unevenness formed on the bottom surface of the slider groove swings as a cam. Due to this swinging, a large bending moment is applied to the coupling portion 5 and the coupling may be removed. Therefore, it is necessary to provide caulking portions 5a, 5b, 5c and the like to be firmly fixed.

  An object of the present invention is to provide a compound needle for a flat knitting machine that does not require a fixed portion as a slider to be firmly fixed in a subsequent process.

The present invention relates to a needle body which is accommodated in a needle groove arranged side by side on the needle bed of a flat knitting machine and has a hook at the front part and can be reciprocated back and forth along the needle groove, and a tongue which opens and closes the hook. Is combined with a slider capable of relative movement in the front-rear direction with respect to the needle body,
The slider is disposed below the needle groove, has a tongue at the front portion, and has an opening / closing body having a lower coupling portion at the rear portion, and a lower coupling portion of the opening / closing body disposed above the opening / closing body within the needle groove. A base having an upper coupling portion coupled to
In the compound needle of flat knitting machine,
Provided on one of the lower coupling part or the upper coupling part, having a side wall that opens to the other side and extends to one side from both ends of the opening end, and the width between the side walls is narrower than the width of the opening end in the front-rear direction. A recess provided with a width portion;
Provided on the other of the lower coupling part or the upper coupling part, and provided with a wide part whose width in the front-rear direction is wider than the narrow part of the concave part, inserted into the concave part from the other side, and joined, A convex part that allows the wide part to pass through the narrow part of the concave part by elastic deformation;
Including
The concave portion has a front and rear than the narrow width portion so as to accommodate the wide portion of the convex portion that has passed through the narrow width portion from the other side when the concave portion and the convex portion are coupled to the side farther from the opening than the narrow width portion. A part with a wide direction is provided,
In the coupling portion between the concave portion and the convex portion, a groove is provided in the middle of one of the thicknesses, and the other is inserted into the groove.
This is a compound needle of a flat knitting machine.

Further, in the present invention, the slider opening and closing body is two blades that can be advanced over the hook by dividing the tongue on both sides of the hook.
It is characterized by that.

Further, in the present invention, the concave portion is formed in the portion where the two blades overlap as the lower coupling portion,
The groove provided at the lower end of the convex portion as the upper coupling portion sandwiches the portion below the concave portion of the portion where two blades overlap in the coupled state.
It is characterized by that.

According to the present invention, the slider carries a lower coupling portion of the closing member, the coupling between the upper substrate bonded portion, the concave portion provided on one, by inserting the convex portion provided on the other. The concave portion is provided with a narrow width portion whose width between the side walls is narrower than the width of the opening end, and the convex portion is provided with a wide width portion whose width is wider than the narrow width portion. During the insertion in the vertical direction, the recess is elastically deformed so that the wide portion can pass through the narrow portion, so that the opening / closing body and the base body can be coupled at the coupling portion. In the coupling portion, since the passage of the wide portion is blocked by the narrow portion in the vertical direction, it can be fixed only by insertion. Also in the width direction, since the concave portion and the convex portion are joined by inserting the other into one groove, it can be prevented from coming off. Therefore, after forming the coupling portion, it is possible to eliminate the need for post-processing for firmly fixing.

  Further, according to the present invention, even if the slider opening / closing body is formed by two blades, it can be coupled and fixed simply by being inserted into the base.

  Further, according to the present invention, the concave portion is provided in the lower joint portion of the two blades at the joint portion between the slider base and the two blades. Of the portion where the two blades overlap, the portion below the recess is sandwiched by the groove at the tip of the convex portion of the upper coupling portion provided on the base side, so that the blade does not come off in the width direction from the coupling portion. it can.

FIG. 1 is a partial left side view and a front sectional view showing a connecting portion 15 between a base body 11 and a blade 13 constituting a composite needle as an embodiment of the present invention. FIG. 2 is a left side view of the base body 11 and the blade 13 of FIG. 1 and a partial left side view of the needle body 16 and the compound needle 17. FIG. 3 is a left side view, a plan view, and a cross-sectional view showing a connecting portion 5 of the slider 4 in a conventional compound needle.

  Hereinafter, FIG. 1 shows a partial configuration of the coupling portion 15 of the compound needle as one embodiment of the present invention. In FIG. 2, the structure of the compound needle 17 provided with the coupling | bond part 15 of FIG. 1 is shown. Of these, the parts described above are given the same reference numerals, or the parts corresponding to the parts explained in FIG. 3 are different only in the tenth numerical value, and the other parts are assigned the same reference numerals. In some cases, duplicate descriptions are omitted. In addition, portions that are not described in the drawings to be described may be referred to with reference numerals described above.

  FIG. 1A shows a state where the base body 11 and the blade 13 which is an opening / closing body are separated from each other. The upper coupling portion 11c of the base body 11 is provided with a groove 11d at the tip and has a convex portion 11e protruding downward. An arm 11f is formed to extend behind the upper coupling portion 11c. The width of the convex portion 11e in the front-rear direction is maximum at the wide portion 11g. The blade 13 has a lower coupling portion 13c coupled to the upper coupling portion 11c. The lower coupling portion 13c is provided with a concave portion 13d that opens upward. The recess 13d is provided with a narrow portion 13e in which the width between the side walls extending downward from both sides of the opening end is narrower than the width at the opening end. The blade 13 is used so that the front end side is overlapped with a blade 12 different from the blades 2 and 3 in FIG. A cross-sectional configuration viewed from the section line AA is shown on the right side of FIG. The blade 12 is also provided with a lower coupling portion 12 c and a recess 12 d in the same manner as the blade 13.

FIG. 1B shows a state in which the base 11 and the blades 12 and 13 are joined to form a joint portion 15. A cross-sectional configuration viewed from the cutting plane line BB at the coupling portion 15 is shown on the right side. In the recesses 12d and 13d, narrow portions 12e. 13e is provided, and the convex portion 11e is provided with a wide portion 11g having a width wider than the narrow portions 12e and 13e. In the middle of the vertical insertion, the recesses 12d and 13d are elastically deformed so that the wide portion 11g can pass through the narrow portions 12e and 13e. Therefore, the upper coupling portion 11c and the lower coupling portions 12c and 13c The substrate 11 can be bonded. With this coupling, the passage of the wide portion 11g is blocked by the narrow portions 12e and 13e in the vertical direction, so that it can be fixed only by insertion. Recess 12d, below the 13d, since two portions blades 12, 13 are stacked in are coupled are inserted into the groove 11d of the tip of the protrusion 11 e, alone inserting vertical, the width direction It can be prevented from falling out. Therefore, after the coupling portion 15 is formed, there is no need to perform post-processing for firmly fixing.

  FIG. 2 shows the configuration of the compound needle 17 as an embodiment of the present invention, and the main body 11, the blade 13, and the needle body 16 which are main components. The base 11 shown in FIG. 2 (a) has a longitudinal groove 11h at the front lower portion together with the upper coupling portion 11c described in FIG. The longitudinal groove 11h is formed in the middle of the width direction so as to open downward. An arm 11f extends to the rear of the base 11, and a bat similar to the bat 1b shown in FIG.

  The blade 13 shown in FIG. 2B has a tongue 13a and a curved portion 13b at the front, and also has an inclined portion 13f. The tongue 13a and the bending portion 13b are the same as the tongue 3a and the bending portion 3b in FIG. The inclined portion 13f is provided to sink the tongue 13a when clearing. At the time of clearing, the needle body moves forward, the tongue 13a relatively moves backward, opens the hook of the needle body, and receives the stitches locked by the hook on the tongue 13a. At this time, it is necessary to sink the tongue 13a in the slider groove of the needle body so as not to obstruct the stitch transition. The same applies to the blade 12 not shown.

  The needle body 16 shown in FIG. 2C has a hook 16a at the front end, and a slider groove 16b is formed in the needle stem following the hook 16a. A cam portion 16c is provided at the bottom of the front portion of the slider groove 16b. The cam portion 16c floats the tongue 13a from the slider groove 16b when the tongue 13a of the blade 13 closes the tip of the hook 16a. At the time of clearing, the tongue 13a retracts in the slider groove 16b, the inclined portion 13f is pressed by the pressing portion 16d provided in the needle body 16, and the tongue 13a sinks in the slider groove 16b.

  A composite needle 17 shown in FIG. 2D includes a slider 14 in which a base body 11 and a blade 13 are combined to form a coupling portion 15, and a needle body 16. The compound needle 17 is accommodated in a needle groove provided side by side on the needle bed of the flat knitting machine, and has a hook 16a at the front portion and functions as a knitting needle that can reciprocate back and forth along the needle groove.

  Although the blade 13 having the tongue 13a for opening and closing the hook 16a of the needle body 16 and the two blades 12 and 13 of the similar blade 12 are combined with the base body 11, the opening and closing body is one piece. It can also be set as this structure. Regardless of the number of sheets, the opening / closing body can be replaced when the base and the opening / closing body are removed after the connecting portion 15 is formed and damaged.

  Further, the convex portion 11e is formed on the upper coupling portion 11c on the base 11 side, and the concave portions 12d and 13d are formed on the lower coupling portions 12c and 13c on the blades 12 and 13 side. In addition, the recess can be formed on the base 11 side. When two blades 12 and 13 are used, a groove is provided on the base 11 side where the concave portion is formed, and the tip of the convex portion on the blade 12 and 13 side may be inserted. If there is no difference in thickness between the base side and the opening / closing body side, one side may be partially thinned and inserted into a groove provided on the other side.

11 Base 11c Upper joint 11d Groove 11e Protrusion 11g Wide part 12, 13 Blade 12c, 13c Lower joint 12d, 13d Recess 12e, 13e Narrow part 14 Slider 15 Joint part 16 Needle body 17 Compound needle

Claims (3)

A needle body that is housed in a needle groove juxtaposed on the needle bed of the flat knitting machine and has a hook at the front part and can be moved back and forth along the needle groove, and a tongue that opens and closes the hook at the front part And combined with a slider capable of relative movement in the front-rear direction with respect to the needle body,
The slider is disposed below the needle groove, has a tongue at the front portion, and has an opening / closing body having a lower coupling portion at the rear portion, and a lower coupling portion of the opening / closing body disposed above the opening / closing body within the needle groove. A base having an upper coupling portion coupled to
In the compound needle of flat knitting machine,
Provided on one of the lower coupling part or the upper coupling part, having a side wall that opens to the other side and extends to one side from both ends of the opening end, and the width between the side walls is narrower than the width of the opening end in the front-rear direction. A recess provided with a width portion;
Provided on the other of the lower coupling part or the upper coupling part, and provided with a wide part whose width in the front-rear direction is wider than the narrow part of the concave part, inserted into the concave part from the other side, and joined, A convex part that allows the wide part to pass through the narrow part of the concave part by elastic deformation;
Including
The concave portion has a front and rear than the narrow width portion so as to accommodate the wide portion of the convex portion that has passed through the narrow width portion from the other side when the concave portion and the convex portion are coupled to the side farther from the opening than the narrow width portion. A part with a wide direction is provided,
In the coupling portion between the concave portion and the convex portion, a groove is provided in the middle of one of the thicknesses, and the other is inserted into the groove.
A compound needle of a flat knitting machine. The opening / closing body of the slider is two blades that can be advanced over the hook by separating the tongue on both sides of the hook.
The compound needle of the flat knitting machine according to claim 1. The concave portion is formed as a portion where the two blades overlap as the lower coupling portion,
The groove provided at the lower end of the convex portion as the upper coupling portion sandwiches the portion below the concave portion of the portion where two blades overlap in the coupled state.
The compound needle of the flat knitting machine according to claim 2.

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