JPH09158013A - Composite needle having stitch transfer function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite needle used for the transfer of stitches, etc., capable of knitting yarns in a stitch-filled state and surely guiding a stitch- receiving needle into stitches caught with a stitch-transferring needle on the transfer of the stitches. SOLUTION: The side surface of a needle main body 2 at a cheek part 20 faced to a stitch-opening part is cut off to form a thin main body. The side lower part of the thin main body is cut off to form an inclined surface 36 for guiding the approach of a stitch-receiving needle, and a tongue-storing part 23 opened on the side surface of the needle main body 2 is disposed on the upper side of the inclined surface 36.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a compound needle for a knitting machine, and more particularly to an improved compound needle having a transfer function.

[0002]

2. Description of the Related Art A compound needle that moves a slider and a needle body relative to each other to open and close a hook can reduce the stroke of reciprocation of the needle to about half that of a spatula needle. It is known that the machine can be downsized, and as a result, the productivity can be improved.

As a compound needle having this kind of transfer function, Japanese Patent Application Laid-Open No. 3-104970 previously proposed by the present applicant.
Japanese Patent Publication No. 4-289252 and JP-A-5-7896.
No. 2 publication is available. Japanese Patent Application Laid-Open No. 3-104970 and Japanese Patent Publication No. 4-289252 disclose that a slider groove is formed by cutting substantially the entire upper edge of the shank portion of the needle body in the longitudinal direction to insert and support the shank portion of the slider. To do. And on the needle body from the cheek to the shank tip,
The tongue of the slider gradually rises from the top edge of the cheek, and while advancing, it lowers the height of the cheek part of the needle body while contacting the hook and surely catching the supplied knitting yarn in the hook A slider groove having a deep groove near the cheek portion and a shallow groove near the main body is formed by cutting from the upper and lower edges of the needle body. By forming the cam surface formed in the deep groove portion shallow on the side close to the hook and deep on the side far from the hook, the arc-shaped sliding edge formed on the lower edge of the tongue of the slider fitted in the slider groove is formed. The movement of the slider as described above is realized by moving back and forth along the cam surface. Incidentally, in describing the respective parts of the needle body and the slider that compose the compound needle in the present specification, the longitudinal direction of the compound needle mounted on the needle bed is the front-back direction, the hook side is the front side, and the other is the rear side. means. Further, the direction orthogonal to the needle bed surface represents up or down or height.

However, in the compound needle disclosed in the above-mentioned publication, the slider groove formed in the needle body from the cheek to the shank tip is milled from both the upper and lower edges of the needle body. A communication hole that is orthogonal to the direction in which the needle advances and retracts is formed in the portion. This not only increases the number of steps required to manufacture the compound needle, but also forms an inclined surface as an entrance guide that is formed on the side surface of the needle body and guides the stitch receiving needle at the time of transfer between the elastic guide and the needle body. It cannot be formed sufficiently and accurate guidance of the stitch receiving needle cannot be guaranteed.

Japanese Laid-Open Patent Publication No. 5-78962 relates to the improvement of the above-mentioned compound needle, in which an inclined surface is formed not only on the needle body side but also on the slider side and both inclined surfaces are combined to guide the stitch receiving needle. Is. However, in this method, since the stitch receiving needle is guided by the inclined surface of the tongue, the portion may be fatigued and damaged or deformed due to the impact generated at the time of guiding, and the durability of the slider remains a problem.

Further, in the above-mentioned compound needle, in order to maintain a predetermined position in the needle groove without being influenced by the forward / backward movement of the needle body inserted in the same needle groove, the slider has a longitudinal direction. The slider is prevented from slipping by fitting and fixing a spacer made of an elastic plate with the tip extended rearward to the non-fitting part that extends from the vicinity of the control butt protruding to the rear side of the needle to the rear end I am trying. However, the control butt provided on the slider is always elastically urged so as to protrude from the needle bed surface, and the upper edge of the control bat is selectively pressed by the presser cam or the like arranged on the cam carriage to move the control butt to the needle bed. When controlling the forward / backward movement of the slider by selecting the engagement / non-engagement with the slider cam by projecting / withdrawing from the surface, it is necessary to attach the spacer to the above-mentioned location so that the slider is responsive to the movement in the projecting / retracting direction. Therefore, the biasing force of a biasing means such as a jack that always elastically biases the slider upward has to be set to a large value in advance.

Further, since the upper edge of the tongue of the slider is formed uniformly flat, the upper edge of the tongue, which is moving in the direction of closing the hook during stitch knitting in which stitches held by the needle follow, slides along the upper edge of the tongue to close the hook. After that, the stitches are knocked over beyond the hook portion, but before the closure of the hook is completed, the stitch falls again from the tip of the tongue into the hook, which causes a problem of not being knocked over. This problem particularly occurs when rib knitting is performed using needles of front and rear needle beds. There is no problem in the case of a general V-shaped flat knitting machine in which the crossing angle between the front and rear needle beds to be opposed to each other is designed to be about 100 degrees, but there is no problem. A tubular knitted fabric having a rib knitting structure is knitted by using a so-called four-bed flat knitting machine in which a pair of needle beds is further arranged above the front and rear needle beds as disclosed in Japanese Patent Laid-Open No. 5-51850. Can happen if you do. 4
In the case of a flat bed flat knitting machine, the crossing angle formed by the front and rear lower needle beds and the upper needle bed is, for example, 120 to 130 degrees, and therefore should be knocked over by the needle on the other needle bed for drawing the knitting yarn. This is because the stitches are drawn in and fall from the slider tongue before the hook closes.

[0008]

DISCLOSURE OF THE INVENTION In addition to the function of the above-mentioned compound needle, the present invention is capable of reliably guiding the stitch receiving needle at the time of transfer into the stitch held by the stitch passing needle. An object is to provide a composite needle for transfer. Another object of the present invention is to provide a composite needle for transfer of a knitting machine, which can reduce the action of sliding resistance applied to the protruding and retracting direction of the slider control butt. It is another object of the present invention to provide a compound needle that ensures knockover of stitches even when the crossing angle between the front and rear needle beds is designed to be gentle.

[0009]

In the compound needle of the present invention, a stitch expanding member is fixed on one side surface of the main body, and a thin body portion in which the side surface of the needle body facing the stitch expanding portion is cut off and this thin wall portion. The lower end of the side surface of the main body is cut off to provide an inclined surface for guiding the entry of the stitch receiving needle. As a result, the distance between the needle body and the stitch expanding portion can be widened, and the inclined surface can be formed by deeply cutting in the thickness direction of the needle body. Since the allowable range of the approach path of the stitch receiving needle can be increased by the depth of cut, the stitch receiving needle is inclined even if the stitch tension increases due to swinging of the needle bed and the stitch passing needle bends in the lateral direction. You can guide with and guide to the regular route to enter the stitch.

A height of the cheek portion is made lower than that of the hook portion, and a tongue storing portion is formed above the inclined surface so that a tongue for retracting the slider is retracted from the cheek upper edge of the needle body. The slider support surface of the storage portion has a rising slope toward the hook portion. Since the outer circumference of the cheek portion can be kept small, the load on the stitches locked by the needles can be reduced, and the knitting of the stitches with a corresponding amount can be performed. Similarly, the yarn supplied to the needle at the time of forming the stitches is advanced while the tongue moves upward by the slope, so that the yarn can be reliably guided into the hook.

Engagement portions are provided on the needle body and the slider to position the slider when the slider retracts. As a result, the tongue of the slider that has advanced to the hook side is stored in the tongue storage portion. The first slider, which has a hook portion at the tip and is inserted and supported in the slider groove of the needle body, has a connecting portion at the rear end of the shank and has a control butt protruding from the upper edge of the shank, and is approximately equal in thickness to the needle body. It is fitted and fixed in a longitudinal groove formed in the second slider having a thickness. The second slider is provided with a plate-like body that is pressed against the side wall of the needle groove. This prevents the slider from moving and stabilizes the position of the slider in the needle groove.

Further, the upper edge of the tongue of the slider has a rising slope toward the tip side. As a result, the rising slope delays the timing of knockover of the stitch.

Further, the side wall of the longitudinal groove is extended forward along the side surface of the shank of the first slider to form a plate-shaped body.
This can reduce the action of sliding resistance applied to the protruding and retracting direction of the control bat.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the compound needle of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a composite needle 1 and a jack 4 taken out in a needle groove of a needle bed, and the composite needle 1 is composed of a needle body 2 and a slider 3. The needle body 2 is provided with a hook portion 7 at the tip and has a fitting recess 9 that is connected to the jack 4 at the rear end side. In the present embodiment, the needle body 2 and the jack 4 are configured as separate bodies, but they may be integrated. Further, the jack 4 itself has a curved elastic leg portion 11 which extends rearward of the main body and abuts the rear end thereof on the needle groove bottom, and always elastically biases the control butt 13 so as to protrude from the needle bed surface. The needle body 2 is moved back and forth when the control butt 13 is moved back and forth by operating means such as a cam carriage (not shown). Reference numeral 15 is a needle pressing plate provided on the needle bed in a direction orthogonal to the forward / backward direction of the needle in order to prevent the needle body 2 and the slider 3 from falling off the needle bed.

2 to 6 are views showing in detail each part constituting the compound needle 1, and FIG. 2 is an enlarged view showing the needle body 2 and the slider 3 supported on the needle body. FIG. 3 is a diagram showing a state in which the slider 3 moves with respect to the needle body 2 of the compound needle 1, FIG. 4 is a diagram showing the configuration of the leading side of the compound needle 1 in more detail, and FIG. 5 is a slider 3 5A is an enlarged view showing a joint portion between the first slider and the second slider, which is included in FIG.
B is a view of FIG. 5-A seen from below, and FIG. 5-C is the line of FIG. 5-A.
FIG. 3 is a cross-sectional view taken along the line III-III. Further, FIG. 6 shows a side view of each component constituting the compound needle 1.

The needle main body 2 has substantially the same height as the head portion composed of the hook portion 7 and the cheek portion 20 having a flat upper surface lower than the hook portion 7 and the side wall of the needle groove extending rearward. It is composed of a shank portion 25. The thickness of the needle body 2 is substantially equal to the needle groove. On one side surface of the shank portion 25, an elastic guide piece 27 as a stitch expanding member at the time of transfer is crimped or welded to a mounting recess 33 formed by notching a base end portion 29 of the side surface of the needle body. It is fixed by. The elastic guide piece 27 is bent from the base end portion 29 and extends forward in a state of protruding toward the side wall of the needle groove, and an elastic guide portion 31 is bent into the storage recess 32 formed on the side surface of the needle body. It is composed of a tip portion 34 into which the tip is inserted.

As shown in FIG. 4, the side surface of the needle body shown by reference numeral 8 facing the elastic guide portion 31 is cut, and the thickness of the needle body 2 at that portion is smaller than that of the other portions. The area up to the rising slope 23a of the tongue provided in the portion 23 is formed thin. The thin main body portion 8 has an inclined surface 36 formed below the tongue storage portion 23 and having a deeper depth of cut toward the lower edge of the main body, and the stitch receiving needle of the opposing needle bed is guided by the inclined surface 36 to be elastic. It can be inserted between the guide portion 31 and the needle main body 2, and can enter into the stitch hung between the needle main body 2 and the elastic guide portion 31. By making the body portion 2 thin, it is possible to increase the distance between the elastic guide portion and the needle body, so that the space for entering the stitch receiving needle can be increased. This is particularly advantageous as a fine gauge compound needle for knitting fine stitches. FIG. 4-C is a cross-sectional view taken along the line I-I in FIG. 4-A and shows a state in which the inclined surface 36 and the tongue 22 of the slider 3 are supported on the needle body 2 above the inclined surface 36. As can be seen from the figure, the hook portion (not shown) of the stitch receiving needle that advances is a wall whose inclined surface does not collide with the tongue 22 of the slider 3. FIG. 4-D shows the plan view of FIG. 4-A with the slider removed.

The cheek portion 20 is formed with a slider groove 38 for supporting and slidingly guiding the tongue 22 of the slider 3 and a tongue housing portion 23 for housing the tongue 22. The sliding support surface of the tongue storage portion 23 has a rising slope 23 a toward the hook portion 7 and continues to the bottom of the slider groove 38.

A stitch receiving portion 40 is provided upright on the side surface of the needle main body on the side where the transfer elastic guide piece 27 is not fixed, and the needle main body 2 and the elastic guide portion are provided when the stitch transfer needle is advanced at the time of transfer. The stitch that is locked between 31 and 31 is reliably received at this position. The stitch receiving portion 40 may be formed on the slider side instead of being formed on the needle body side as described later. The engaging portion 42 engages with a slider positioning engaging portion 55 formed on the rear side of the tongue 22 of the slider 3 to perform vertical positioning of the slider 3 when the slider 3 retracts. FIG. 4-B is a sectional view showing the engaged state. Reference numeral 44 denotes the shank 5 of the slider 3 which is cut down over the entire length of the upper edge of the shank portion 25 of the needle body.
3 is a slider groove 44 for inserting and supporting 3.

The slider 3 is composed of a first slider 50 and a second slider 51. The first slider 50 includes a tongue 22 provided on the tip side of the shank 53 and a slider provided on the rear side of the tongue 22. 3 A connecting portion 57 between the engaging portion 55 for positioning when retracting and the second slider 51 formed on the rear end side of the shank 53, and is inserted into the slider grooves 38 and 44 formed in the needle body 2. Slidably supported.

The lower edge of the tongue 22 has an arc shape along the sliding support surface of the tongue storage portion 23 formed on the needle body 2. At the upper edge of the tongue 22, there are formed a flat portion 59 that comes into contact with the hook from the tip, followed by an inclined portion 60 having a gentle descending inclined surface extending rearward and a low flat portion 61. The inclined portion 60 formed on the upper edge of the tongue acts to delay the timing of knockover of the stitch to be knocked over by sliding on the upper edge of the tongue during stitch formation, and the hook of the needle is closed during that time. Eliminates the trouble that the stitch falls from the tip of the tongue 7 into the hook. Further, the connecting portion 57 has a projecting portion 63 having an inclined surface 63a with a deeply cut base portion at the upper edge and a corrugated concave portion 65 at the lower edge.

The second slider 51 has substantially the same thickness as the thickness of the needle body 2, and has a control butt 69 of the same thickness protruding from the needle bed surface on the upper edge of the shank 67 and the first slider 50 in front of it. Slope 63a formed on the protruding portion 63 of the
And a slanted surface 71 that fits into a notch formed at the upper edge of the shank 53. Control bat 69 for the second slider 51
The lower edge side of the shank 67 at the position where is provided is cut to form a longitudinal groove 73, and the rear end of the shank 53 of the first slider 50 is fitted into the groove, and the first slider 5 is inserted.
Both members 50 and 51 are fixed to the 0 recessed portion 65 by caulking the side wall of the longitudinal groove 73. In the second slider 51, a plate-like body 75 is formed by extending the groove side wall of the longitudinal groove 73 forward along the side surface of the shank 53 of the first slider 50 as shown in the figure, and at the center of the plate-like body 75. The portion is curved so as to be pressed against the side wall of the needle groove. This provides a required sliding resistance in the needle groove of the slider 3 and prevents the needle body 2 from moving along with the movement of the needle body 2 when the needle body 2 moves back and forth. Since the plate-like member 75 that elastically biases the side wall of the needle groove is positioned so as to extend to the non-fitting portion of the front portion of the control butt 69 with the needle main body 2, the influence of the control butt 69 on the retracting operation from the needle bed surface is affected. Can be reduced.

Next, FIG. 3 shows opening / closing of the hook by the forward / backward movement of the slider 3 of the compound needle 1 constructed as described above. FIG. 3-A shows a state in which the hook of the needle 1 is closed,
The slider 3 is supported by the groove bottom of the slider groove 38 of the needle body 2 and the groove side walls of the slider grooves 38, 44. The upper edge of the contact portion between the tip of the tongue 22 of the slider 3 and the hook portion 7 has a substantially flush height.

FIG. 3B shows a state in which the slider 3 is retracted and the inclined surface of the engaging portion 55 provided on the slider 3 abuts on the engaging portion 42 of the needle body. Slider 3 is tongue 22
The lower edge slides back while being slidably supported by the groove bottom of the slider groove 38, and the tip of the tongue 22 is separated from the hook portion 7.
During this time, the tongue 22 of the slider 3 moves horizontally while maintaining the same height as in FIG.

FIG. 3C shows a state where the tongue 22 of the slider 3 is farthest from the tip of the hook portion 7 and the hook is fully opened. The backward path of the slider 3 from FIG. 3-B to FIG. 3-C is determined by the slider 3 and the engaging portions 55 and 42 of the needle body 2, and the tongue 22 of the slider 3 gradually descends to the needle body 2. Immerse in the formed tongue storage portion 23.

From the state in which the slider 3 is retracted and the hook is fully opened in FIG. 3C to the slider 3 is advanced and the hook is closed, the slider 3 has an advancing path which is flat with an inclined sliding support surface which is continuously provided. Tongue 2 on the bottom of the slider groove 38
2 Lower edge is determined by sliding guide, and slider 3
The tongue 22 of the tongue 22 gradually protrudes from the cheek portion 20 and the tip of the tongue 22 advances to the same height as the upper edge of the hook portion 7, and then further advances while maintaining the height, and further extends to the hook portion 7.
Abut.

FIG. 7 shows a modification of the positioning engaging portion when the slider is provided on the needle body and the first slider, in which case the slider advances and the tongue tip 22 'contacts the hook portion. Even when they are in contact with each other, the engagement portions 55 'and 42' formed on the slider and the needle body can maintain the engaged state, so that the slider can be positioned by the needle body in both the forward and backward directions of the slider. . Further, FIG. 8 shows a modified example in which the stitch receiving portion is provided on the front edge of the shank of the first slider in place of the needle main body portion, and the reference numeral 40 'serves as the stitch receiving portion.

[0028]

Since the compound needle of the present invention is constructed as described above, the manufacturing of the compound needle is relatively easy and the cost for manufacturing the compound needle can be reduced. Then, the knitting yarn supplied to the needle can be reliably caught by the hook, and the knitting of the stitch can be further performed, and the stitch receiving needle at the time of transfer can be stitched by the inclined surface formed below the tongue storage portion of the needle body. It can be surely guided in the stitches locked by the transfer needle. At that time, the inclined surface serves as a wall, and the hook of the stitch receiving needle does not collide with the slider, which allows the compound needle to be used for a long time. By cutting the side surface of the main body to widen the distance between the stitch expanding member and the needle main body, an entry space for the stitch receiving needle can be secured, which is advantageous as a transfer needle for a fine gauge.

Even when the crossing angle between the front and rear needle beds is designed to be gentle, it is possible to guarantee the knockover of the stitches and solve the problems that occur during rib knitting.

Further, since the elastic plate-like member is provided on the front side of the shank of the slider, not only the delusion of the slider is prevented but also the sliding resistance acting on the protruding and retracting direction of the control bat is reduced and the control bat is moved upward. It is possible to eliminate the need to set the biasing force of the biasing means for biasing to an unnecessarily large amount.

[Brief description of the drawings]

FIG. 1 is a side view showing a composite needle and a jack inserted into a needle groove and shown.

FIG. 2 is an enlarged view of a compound needle.

FIG. 3 is a diagram showing a state in which a hook of a compound needle is opened and closed.

FIG. 4 is a diagram showing in more detail the configuration of the leading portion of the compound needle, FIG. 4-A is a side view in which the stitch expanding member and its mounting portion are omitted, and FIG. -I arrow cross-sectional enlarged view,
FIG. 4-C is an enlarged cross-sectional view taken along the line II-II, and FIG. 4-D is a plan view of only the needle body.

5 is an enlarged view showing a joint portion between the first slider and the second slider, FIG. 5-A is a side view, and FIG.
5B is a view of FIG. 5-A seen from below, and FIG. 5-C is a cross-sectional view taken along line III-III of FIG. 5-A.

FIG. 6 is a view showing a side surface of each component constituting the compound needle.

FIG. 7 is a view showing a modified example of the positioning engaging portion of the needle body and the slider.

FIG. 8 is a modified example in which a stitch receiving portion is provided on the front edge of the shank of the slider.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Compound needle, 2 ... Needle body, 3 ... Slider, 9 ... Fitting part, 13 ... Control butt, 20 ... Cheek part, 22 ... Tongue, 23 ... Ton accommodating part, 27 ... Transferring elastic guide piece, 34 ... Tip part, 36 ... Inclined surface, 38, 44 ... Slider groove, 42, 55 ... Engagement part, 57 ... Connection part, 60 ... Inclined part, 63 ... Projection part, 69 ... Control butt, 73 ... Longitudinal groove, 75 … Plates

Claims (5)

[Claims] 1. A needle body having a hook portion at its tip and a slider inserted and supported in a groove formed in the needle body, and a tongue provided at the head portion of the slider closes the hook of the hook portion of the needle body. In a compound needle for a knitting machine, which is movable over a closed position and an open position for releasing a hook, the needle body is
A stitch expanding member having a proximal end fixed to one side surface of the main body, a thin-walled main body portion in which the needle main body side facing the stitch expanding portion of the stitch widening member is cut off, and a side surface lower end portion of the thin-walled main body portion. An inclined surface that guides the entry of the stitch receiving needle formed by cutting
A cheek portion lower in height than the hook portion of the needle, a slider groove for supporting and slidingly guiding the tongue of the slider formed by cutting on the upper edge of the cheek portion, and a tongue above the inclined surface when the slider retreats. A tongue storing portion having an ascending slope toward the hook portion communicating with the slider groove which is retracted from the cheek upper edge of the needle body, and a slider positioning engagement formed on the rear side of the tongue of the slider formed on the shank side. And a slider groove for inserting and supporting a shank of the slider formed by cutting the upper edge of the needle body on the rear side of the leading portion of the needle body by engaging with a portion to hold the position of the slider when the slider retracts. The slider is composed of a first slider and a second slider, and the first slider has a tip provided on the tip side of the shank as a hook portion. The second slider has a connecting tongue, an engaging portion provided at a rear position of the tongue for positioning when the slider retracts, and a second slider formed at a rear end side of the shank. A control butt projecting from the upper edge of the shank having a thickness substantially equal to that of the shank, a longitudinal groove into which the rear end of the shank of the first slider is fitted and fixedly jointed, and a plate-like body pressed against the side wall of the needle groove are provided. A compound needle having a transfer function, which is characterized in that 2. The compound needle having a transfer function according to claim 1, wherein the upper edge of the tongue of the slider has a rising slope toward the front end side. 3. The plate-shaped body has a transfer function according to claim 1, wherein the side wall of the longitudinal groove is configured to extend forward along the side surface of the shank of the first slider. Compound needle. 4. A compound needle having a transfer function according to any one of claims 1 to 3, wherein a side surface of the needle main body on which the stitch expanding member is not fixed is projected to form a stitch receiving portion. 5. A compound needle having a transfer function according to claim 1, wherein a stitch receiving portion is formed on a front edge of the shank behind the tongue of the first slider.