JPH09228206A - Complex needle for knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a complex needle for a knitting machine, having a new constitution equipped with an hook mouth opening and closing piece axially supported on a slider so as to enable the free swinging and capable of increasing the tolerance of feeding conditions for yarns to needles by swinging the hook mouth opening and closing piece. SOLUTION: This complex needle comprises a needle body 3 having a hook part at the tip of a needle shank, a slider 5 capable of freely advancing and retreating in the longitudinal direction of the needle body 3 and a hook mouth opening and closing piece 7, having a tongue 23 at one end thereof and attached to the slider 5 so as to enable the free swinging. The complex needle is composed so as to swing and displace the hook mouth opening and closing piece 7 in the relative motional relationslnip of the needle body 3 and the slider 5 and open and close the hook mouth thereof.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a compound needle used in a knitting machine such as a flat knitting machine or a circular knitting machine.

[0002]

2. Description of the Related Art A composite needle of a knitting machine is known which comprises a needle body and a slider having a tongue portion at the tip for opening and closing a hook portion provided at the tip of the needle body by moving relative to the needle body. Has been. Since the stroke of the knitting needle in the knitting movement of the compound needle can be about half that of the Bella needle, many advantages such as making the cam carriage smaller and improving productivity, extending the life of the needle, and softening the texture of the fabric Have.

As described above, the compound needle catches the yarn supplied from the yarn feeder with the hook by opening and closing the hook of the hook portion by the relative movement of the needle body and the slider, and the needle already knitted. Knock over the knitted stitch over the upper edge of the hook with the hook closed. Therefore, in order to catch the yarn with the hook, at least the yarn must be supplied to a position where it can be caught with either the hook or the slider. In the case of a spatula needle, the thread supplied from the yarn feeder may be present in the rotating area of the spatula, and the thread that is rotated toward the hook portion pushes the thread down into the hook and closes the hook. The allowable range of thread condition is much larger than that of the compound needle.

[0004]

An object of the present invention is, unlike the above-described compound needle, is to provide a compound needle for a knitting machine having a novel structure, which is provided with a hook opening / closing element pivotally supported by a slider. Is to provide.

Another object of the present invention is to provide a compound needle for a knitting machine, which can increase the allowable range of yarn feeding conditions.

Another object of the present invention is to provide a compound needle for a knitting machine which can firmly support the tongue portion even when a load is applied laterally to the longitudinal direction of the needle.

Another object of the present invention is to provide a compound needle for a knitting machine for delaying the timing of the stitches held by the needle so as to knock over the hook.

Another object of the present invention is to provide a knitting machine compound needle having a transfer function.

Another object of the present invention is to provide a compound needle for a knitting machine for transferring stitches smoothly without applying excessive tension to the stitches.

[0010]

The compound needle of the present invention has a needle body having a hook portion at the tip of the needle stem, a slider movable in the longitudinal direction of the needle body, and a tongue at one end. The hook opening / closing member is swingably attached to the slider, and the hook opening / closing member is pivotally displaced in a relative movement relationship between the needle body and the slider to open / close the hook opening of the hook portion. The swinging of the hook-and-loop opener can be caused by the structure of the compound needle itself or by an appropriate means such as a swing drive mechanism provided in the knitting machine. This makes it possible to use the new structure of the compound needle in a knitting machine.

When the slider relatively moves in the direction of approaching the hook portion of the needle main body, the hook opening / closing element is swung, and the tongue tip end thereof is lifted to close the hook opening, and the slider is removed from the hook portion of the needle main body. When moving relative to each other, lower the tongue tip to open the hook. In the case of swinging and displacing the hook opening / closing element by the structure of the compound needle itself, a part of the hook opening / closing element is engaged with the cam surface formed on the needle body. At that time, when the lower edge of the tongue of the hook-and-eye switch engages with the cam surface formed on the needle body, the tip of the tongue rises,
When the engaging projection provided on the rear side of the tongue portion engages with the cam surface formed on the rear side of the cam surface, the tip portion of the tongue descends.

By forming the cam surface on the groove bottom of the accommodating groove for accommodating the tongue portion of the hook / mouth opening, the hook opening / closing element being knitted is firmly supported by the needle body. In addition, by forming a recess in the upper edge of the tongue of the hook-and-eye switch to delay the timing of knockover, the upper edge of the tongue slides and the stitch to be knocked over is temporarily stopped. The compound needle was provided with a space for passing the receiving needle for handing over stitches. The space for entering the receiving needle is a portion where the tip side including the blade attached to one side surface of the needle body or the tongue portion of the hook / mouth opening advances beyond the hook, and the hook of the hook / closing opening exceeds the hook. Is formed by. As a result, stitch formation and stitch transfer can be performed using the compound needle of the present invention.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the compound needle of the present invention will be described below with reference to the drawings. For the sake of convenience of explanation, only the new structural portion of the compound needle will be described in detail, and illustration or description of a portion that is not a characteristic portion of the present invention without any difference from a known one will be omitted. FIG. 1 shows an overall schematic view of a compound needle according to an embodiment of the present invention. Each component of a needle main body 3, a slider 5, a hook / mouth opening / closing member 7 and a jack 9 which compose the compound needle 1 is a knitting machine. The state where it was combined so as to be installed in the needle groove is shown. FIG.
[Fig. 2] is an enlarged view showing a characteristic part of the compound needle 1,
2A is a side view, FIG. 2B is a vertical cross section of FIG. 2A seen from the side of the hook opening, and FIG. 2C is an enlarged cross section taken along line I-I of FIG. The figure is shown. The present embodiment is applied to a compound needle of a type in which the height of the cheek portion 13 is made lower than the height of the hook portion 11 and the stitches held by the needle do not apply excessive tension when sliding on the cheek 13. It is an example.

The needle main body 3 has a trunk-like shank portion 15 for slidably supporting the slider 5 on the upper edge of the main body, and a leading portion 17 which is one step lower in height on the front end side of the main body. On the top portion 17, a hook portion 11 having a hook from the tip, followed by a throat portion 19 and a cheek portion 13 having an upper edge as a flat surface are formed. The cheek portion 13 has a longitudinal groove 21 formed by cutting the upper edge. The longitudinal groove 21 secures a space for accommodating the tongue portion 23, and an inclined surface 25a which is raised forward toward the hook portion 11 and an inclined surface 25b which is raised rearward toward the shank are used as cam surfaces 25 at the groove bottom. A through hole 27 formed in the needle body is formed between the through holes 27. Further, a concave cutout portion 29 is formed between the cheek portion 13 and the shank portion 15 which form a step in the needle body 3, so that an engagement protrusion 31 of the slider 3 described later can be fitted therein. Further, the shank portion 15 of the needle body 3 is provided with a fitting recess 33 that is connected to the jack 9. In the present embodiment, the needle body 3 and the jack 9 are formed separately, but they may be integrated. The jack 9 is provided with a control bat 35 for advancing / retreating operation, and is knitted by advancing / retreating operation by an operating means such as a cam carriage (not shown) together with a control bat 37 of the slider 5 described later.

The slider 5 has a thickness equal to that of the needle body 3 and is slidably supported on the upper edge of the shank portion 15 of the needle body 3. The slider 5 includes a shank portion 39 that extends in the longitudinal direction and is in sliding contact with the shank portion 15 of the needle body 3, and a mounting portion 4 that swingably mounts and supports the hook opening / closing element 7 at the tip.
1 and slider 5 Shank part 1 of needle body 3 when retracted
5 has an engaging protrusion 31 that fits into the recessed portion 29 formed at the front edge. The mounting portion 41 provided at the tip of the shank 39 has a slit-shaped groove 43 into which the upper arm portion 47 of the hook / closure 7 is inserted.
Is formed. On the side wall of the groove 43, a through hole 45 coaxial with the pivot axis of the cap 7 is formed. The ceiling portion of the groove 43 is formed in a shape along the outer shape of the hook opening / closing element 7 to be inserted.

The hook opening / closing element 7 has a substantially U shape.
Hole 4 penetrating in the thickness direction in upper arm portion 47 provided at one end thereof
9 is formed. The upper arm portion 47 is attached to the groove 43 of the slider 5.
The hook opening / closing element 7 is inserted by inserting a pin, a rivet or the like indicated by reference numeral 48 into the holes 47, 49, and the like.
Is pivotally supported by the slider 5. On the other side facing the upper arm portion 47, a tongue portion 23 whose tip is brought into contact with and separated from the hook portion 11 is formed. As shown in the figure, the tongue portion 23 that extends straight toward the hook portion 11 has an upper edge portion 51 on which the stitches held by the needle slide, a lower edge portion 53 on the opposite side, and a hook portion that contacts the hook portion 11. Mouth closing tip 55
Is provided.

The tip end side of the tongue portion 23 has a V shape in which a concave portion 51a is formed in a part of the upper edge portion 51 and a bulging portion 53a is formed in the lower edge portion 53. This recess 51a
Acts to delay the timing of knockover of the stitch to be knocked over by sliding on the tongue upper edge portion 51 at the time of stitch formation, and the hook is hooked from the tongue tip portion 55 where the stitch does not completely close the hook. It has the function of eliminating the trouble of falling inside. Reference numeral 53b is a rear lower edge portion continuing from the bulging portion 53a. The bulging portion 53a formed on the lower edge portion 53 is an inclination formed on the groove bottom of the longitudinal groove 21 cut in the needle body 3 when the slider 5 and the needle body 3 move relative to each other and the slider 5 advances. It engages with the surface 25a and swings and displaces the hook opening / closing member 7 counterclockwise. Tongue 2
3 does not necessarily have to be provided with the bulging portion 53a, but is provided with the bulging portion 53a and the inclined surface 25a provided on the needle body 3
By engaging with the tongue portion, the swing amount of the tip portion 55 of the tongue portion can be increased, and the tongue portion 55 can be raised higher accordingly. The amount of rise of the tongue tip portion 55 increases as the bulging portion 53a is formed at a position away from the tongue tip portion 55. Further, by changing the inclination angle of the inclined surface 25a of the needle body 3 and the like, the needle body 3
It is possible to change the swing amount of the hook opening / closing member 7 with respect to the relative movement amount of the slider 5 and the slider 5. As described above, the advancing locus of the tongue tip portion 55 when closing the hook of the hook portion 11 can be variously changed depending on the engagement relationship between the lower tongue edge portion 53 and the needle body 3, and depending on the type of the compound needle. You can decide the relationship.

The upper arm portion 47 and the tongue portion 23 of the hook opening / closing element 7
The U-shaped base portion 57 that forms the shape restricts the lower limit position of the stitch that is locked by the needle. The protrusion 5 is located behind the base 57.
9 is provided on the lower edge of the needle body 3 when the slider 5 retracts with respect to the needle body 3, and engages with an inclined surface 25b formed at the groove bottom of the longitudinal groove 21 cut into the needle body 3 to open and close the hook. Engagement projections 61 are formed to pivotally displace the child 7 in a clockwise direction.

The operation of the compound needle 1 thus constructed will be described. 3A to 3E show a state in which the slider 5 advances toward the needle body 3 and gradually closes the hook of the hook 11. The swing of the hook opening / closing member 7 when the slider 5 advances is caused by the engagement between the tongue lower edge portion 53 and the inclined surface 25a.

FIG. 3A shows a position where the slider 5 is most retracted with respect to the needle body 3 in a state where the hook of the hook portion 11 is fully opened. Usually, this position indicates the advanced position of the needle on the needle bed. The swinging position of the hook opening / closing member 7 at this position is determined by the engagement between the engaging projection 61 and the upper edge of the cheek 13 of the needle body 3, and the tongue upper edge portion 51 is substantially flush with the upper edge portion of the cheek 13. The entire tongue portion 23 is recessed in the longitudinal groove 21 at a height (this position is hereinafter referred to as a reference position). Further, at this position, the engaging protrusion 31 provided on the slider 5
Enters the recess 29 of the needle body 3 to suppress downward deformation of the needle body 3 and enhance the rigidity of the slider 5 and the needle body 3.

In FIG. 3-B, the slider 5 is shown in FIG.
The state immediately before the bulging portion 53a formed on the tongue lower edge portion 53 is engaged with the inclined surface 25a formed on the longitudinal groove 21 is shown. At this time, the tongue portion 23 is still recessed in the longitudinal groove 21 while the swinging position of the hook opening / closing member 7 maintains the reference position. The engagement projections 31 and 61 of the slider 5 and the hook / pull opening / closing element 7 are pulled out from the recessed portion 29 of the needle body 3, and the engagement projection 61 of the hook / pull opening / closing element 7 is located directly above the longitudinal groove 21.

In FIG. 3-C, the slider further advances from the position of FIG. 3-B, and the bulging portion 5 formed on the lower edge portion 53 of the tongue.
3a is engaged with the inclined surface 25a of the longitudinal groove 21 and the hook opening / closing element 7 swings counterclockwise. The swinging movement of the hook opening / closing member 7 around the swinging fulcrum is realized by raising the tongue tip portion 55 from the upper edge of the cheek portion 13 and immersing the engaging projection 61 in the longitudinal groove 21.

FIG. 3D shows a state in which the slider is further advanced and the bulging portion 53a of the hook opening / closing member 7 is raised to the uppermost position of the inclined surface 25a along the inclined surface 25a. During the period from FIG. 3-C to FIG. 3-D, the hook opening / closing member 7 continues to swing and further raises the tongue tip portion 55. In the hook opening / closing element 7, after the bulging portion 53a has passed the uppermost position of the inclined surface 25a, the tongue tip portion 55 is stopped from rising, and the rear lower edge portion 53b has the inclined surface 2a.
While engaging the uppermost part of 5a, the swing position shown in FIG. During this time,
The stitch retained by the needle slides on the upper edge of the tongue toward the tip portion 55. However, since the recess 51a formed on the upper edge temporarily suppresses the movement, the tongue tip portion 5
It is prevented from slipping through 5 and falling into a hook that is not completely closed. This is particularly advantageous when knitting, such as rubber knitting, in which threads are knitted in a zigzag pattern on the front and rear needle beds.

In FIG. 3-E, the slider 5 is further advanced,
The tongue tip portion 55 of the hook opening / closing member 7 is in contact with the hook portion 11 to close the hook portion 11. While the hook opening / closing element 7 is pivotally displaced counterclockwise, the engaging projection 61 abuts on the inclined surface 25b, so that excessive lifting of the tongue tip portion 55 is restricted. Further, while the hook opening / closing member 7 swings to close the hook opening of the hook portion 11, the tongue portion 23
And since the protrusion 59 is in the state of entering into the longitudinal groove 21 of the needle body 3, the hook opening / closing member 7 is firmly supported by the needle body 3. As a result, the hook opening / closing element is prevented from being laterally deformed by the tension from the stitch during knitting.

As the slider 5 advances in this way, the hook opening / closing member 7 swings to raise the tongue tip 55 to close the hook of the hook 11, so that the thread supplied to the needle is fed to the tongue tip. It is possible to catch at the pressing hook portion 11 at 55, and the allowable range of the yarn supply condition can be increased as compared with the conventional case.

Next, description will be made on a case where the slider 5 is retracted with respect to the needle body 3 to open the hook from a state where the hook of the hook portion 11 is closed. As the slider 5 retracts with respect to the needle main body 3, the engaging protrusion 61 provided on the hook opening / closing element 7 engages with the inclined surface 25b, and the inclined surface 25b is moved while swinging the hook opening / closing element 7 clockwise. Going up. As a result, the tongue portion 23 whose tip abuts on the hook portion 11 gradually retracts into the longitudinal groove 21 of the needle body 3 while opening the hook. Excessive clockwise rotation of the hook opening / closing member 7 during this time is prevented by the lower edge 53 of the tongue coming into contact with the inclined surface 25a. Further, at the position where the slider 5 is most retracted and the hook is fully opened, the engaging projection 31 provided on the slider 5 enters the recess 29 of the needle main body and the engaging projection 61 of the hook opening / closing member 7 is released. By being supported by the upper edge of the cheek portion 13, unnecessary delusion of the hook opening / closing element 7 is prevented and the reference position is maintained.

In the compound needle 1 of the present embodiment described above, the rising height of the tongue tip portion 55 at the time of rocking is set to be substantially equal to the height of the hook portion 11.
Can be raised higher than the hook portion 11, and an example thereof is shown in FIGS. 4 and 5.

In the compound needle 101 of FIG. 4, the hook opening / closing element 10 is used.
The bulging amount of the bulging portion 153a formed on the tongue lower edge portion 153 of No. 7 is increased, and accordingly, the shape of the protruding portion 159 having the engaging protrusion 161 provided on the U-shaped base portion 157 is changed. The point is that the cutting amount of the longitudinal groove 121 cut in the needle body 103 is changed. As a result, the slider 105 advances, the bulging portion 153a engages with the inclined surface 125a of the longitudinal groove 121, and increases the swing amount of the hook opening / closing element 107 when the slider 105 advances, so that the tongue tip portion 155 is further extended. Since the yarn is elevated to a high level, the thread supplied to the needle can be reliably pressed by the tongue tip portion 155 and captured by the hook of the hook portion 111. At the same time, when the slider 105 retracts, the hook opening / closing element 107 is oscillated and displaced, and the tongue portion 123 can be stored in the longitudinal groove 121. Hook part 1
The tongue tip 155 that has risen higher than 11 is pushed down by the stitches locked by the needle itself sliding on the tongue upper edge 151, abuts the hook 111, and the hook is closed. It is not necessary to separately provide a mechanism for pushing down.

FIG. 5 shows a modified example and shows a view corresponding to FIG. 4 of the embodiment applied to the compound needle 201 having the same upper edge height of the hook portion 211 and the cheek portion 213. In this compound needle 201, a recessed portion 213a is provided at the lower edge of the cheek portion 213 for the purpose of reducing the tension of the stitches held by the needle. In the compound needle of the present embodiment, the amount of rise of the tongue tip 255 from the upper edge of the cheek portion 213 is set higher than that of the other compound needles described above, and there is an advantage that the thread can be more easily captured. As described above, when the rising height of the tongue tip at the time of rocking is increased as shown in FIG. 4 and FIG. 5, the merit that the allowable range of the yarn supply condition for the needle can be further increased as compared with the previous one. Therefore, the yarn can be more reliably captured.

FIG. 6 is a diagram showing an advancing locus of the tongue tip portion from the open state to the closed state of the hook portion of the hook portion of several types of compound needles manufactured by implementing the present invention. As described above, the elevation of the tongue tip during the relative movement between the needle body and the slider is caused by the swing displacement of the hook opening / closing center around the swing fulcrum of the slider. There is no need to provide a structure for allowing the slider to be displaced in the height direction of the needle body, unlike the case of the conventional compound needle, which does not displace in the direction.

FIGS. 7 and 8 show another modification, showing a compound needle having a transfer function. FIG. 7 shows a compound needle of a type that is transferred by a stitch expanding member commonly called a blade provided on the side surface of the needle body, and FIG. 8 is a compound needle of a type that is transferred by a tongue portion of a hook-and-mouth operator. Indicates. The former is disclosed in Japanese Utility Model Laid-Open No. 3-55892, and the latter is disclosed in JP-A-58-21.
It is disclosed in Japanese Patent No. 4568 and Japanese Patent Laid-Open No. 8-81863.

First, the compound needle of FIG. 7 will be described. Figure 7
-A is a side view showing the front side of the compound needle, and FIG. 7-B is a plan view thereof. Since the basic structure is the same as that of the compound needle of FIG. 1, different parts will be described below. Feather 360
Is a thin and thin plate plate having elasticity, and a recess 370 having a base 361 formed on the side surface of the needle body so as to form a receiving needle entry space P between the side surface of the needle body 303 and the side surface.
After being fixed to, and protruding laterally from the mounting base 361 toward the center side, it is curved near the center, and the tip end portion 363 is set as a free end accommodated in a recess 372 formed near the cheek 313. A step 366 is formed between the curved portion 365 and the tip of the blade 360. The curved portion 365 is for increasing the strength of the blade 360. In the needle body 303, the back side of the cheek 313 of the head portion 317 is raised by one step to form a step portion 374 at the same position as the step portion 366 of the blade, and the upper edge 368 of the head portion following the step portion 374 is provided on the slider 3.
The leading side of 05 was used as a support surface. This support surface is provided while the slider 305 moves relative to the needle body 303.
The hook opening / closing member 307 is stabilized to support the slider 305. The stitches (not shown) that are transferred by the step portions 366 and 374 provided on the needle body 303 and the blades 360 are received, and are received by the receiving needle that enters between them. 311 of a figure shows a hook part, 321 shows a longitudinal groove.

Next, the compound needle of FIG. 8 will be described. FIG.
FIG. 9 is an enlarged view showing a cross section taken along line II-II in FIG. The basic configuration of the compound needle 401 of this example is the same as that of the compound needle of FIG. 1, and different points will be described below. The remarkable point of this compound needle 401 is that the tongue portion 423 that locks the stitch (not shown) of the hook opening / closing member 407 for transferring the stitch does not move the hook portion 411 even after closing the hook of the hook portion 411. It is a point to go beyond and further advance. In order to perform the transfer, the hook opening / closing member 407 is pivotally supported by the mounting portion 441 of the slider 405 as a structure in which two thin plate-shaped plates 407a and 407b are stacked. Hook opening and closing 4
07 forms a step portion 480 for catching stitches on the rear side of the tongue portion 423. When the tongue portion 423 advances beyond the hook, the hook opening / closing element 407 contacts the hook portion 411, and the inclined guide surface 4 provided at the tip of the tongue portion 423.
As shown in FIG. 9, it is expanded by 08a and 408b, and a receiving needle entry space P is formed in a portion beyond the hook portion 411. The needle body head portion 417 behind the cheek 413 is formed one step higher, and the upper edge 46 of the head portion following the step portion 482 is formed.
8 is supported as a sliding surface of the slider 405. Also,
By forming the stepped portion 482 and raising the head portion 417, the longitudinal groove 421 can be deepened and the hook opening / closing member 407 that moves back and forth while rocking can be firmly supported.

At the transfer position, the engaging protrusion 461 of the hook opening / closing member 407 is supported in the longitudinal groove 421, and the back of the upper arm portion 447 of the hook opening / closing member 407 is attached to the mounting portion 441. It is brought into contact with the groove bottom of the slit-shaped groove 443 to restrict the swing in the clockwise direction. FIG. 8-A shows a state in which the hook opening / closing element 407 is retracted and the hook opening is opened. At this time, the tongue portion 423 and the step portion 480 of the hook-and-loop opening / closing element are housed in the longitudinal groove 421. FIG. 8-B shows the hook-and-door switch 4.
07 has advanced and the hook has been closed. This position corresponds to the highest position of the tongue portion 423 in the case of forming stitches, but in the case of transfer, the stitches to be transferred are continuously held on the tongue portion. FIG. 8-C shows the slider 40.
5 and the hook-and-mouth opening / closing member 407 have further advanced, and the stitches to be transferred are received by the step portion 480 and guided to the transfer position beyond the hook 411. In the case of this example, since the tongue portion 423 advances while descending after passing over the hook 411, the tension of the stitches received by the stepped portion 480 is relaxed, which helps smooth transfer. Reference numeral 490 indicates a receiving needle.

It should be noted that the present invention is not limited to the above-described embodiment, and, for example, a hook opening / closing element pivotally supported by a slider is used instead of the cam surface formed on the needle body for raising the tongue tip. An elastic biasing means such as a leaf spring may be arranged between the slider and the slider to bias the tongue tip so as to always rise. In this case, the hook surface is opened and closed by adjusting the clockwise and counterclockwise swing amounts of the hook opening / closing element by the cam surface that lowers the tip of the tongue. It is also possible to cause the swinging displacement of the hook opening / closing element by using a means other than the compound needle, such as a control butt provided on the hook opening / closing element and a cam provided on the carriage to move the control butt forward / backward. Is. Further, in the above-described embodiment, an example is shown in which the entire tongue portion is buried from the cheek upper edge and accommodated in the longitudinal groove, but the tongue tip portion is an essential requirement for clearing the stitches locked in the hook. If it is configured to be buried from the top edge of the cheek, it is not necessary to bury the entire tongue portion from the top edge of the cheek, and the invention can be carried out within the scope of the present invention.

[0036]

As described above, according to the present invention, the hook opening / closing element having the tongue portion is swingably supported on the slider as described above, and the hook opening / closing element is rocked and displaced during the relative movement between the needle body and the slider. Since the hook portion of the hook portion is opened and closed, it can be used as a compound needle of a knitting machine.

Further, when the yarn supplied to the needle is captured, the hook opening / closing member swings to raise the tip of the tongue, so that the yarn can be easily captured and the allowable range of the condition for supplying the divided yarn is increased. can do.

Further, since the hook opening / closing member is supported by the longitudinal groove of the needle body, even if a lateral load is applied to the tongue portion during knitting, it is firmly supported by the needle body and its deformation can be suppressed. .

Further, since the recess formed on the upper edge of the tongue slides on the upper edge of the tongue to temporarily stagnate the stitch to be knocked over, the stitch is knocked over after the hook is closed. As a result, it is possible to eliminate the problem that the stitch does not return to the inside of the hook and knock over in knitting of a knitted fabric that is knitted on the front and rear needle beds, such as rubber knitting.

Further, by providing the compound needle with a transfer member for forming a space for receiving the receiving needle, not only formation of stitches but also transfer knitting is possible.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall side surface of a compound needle according to an embodiment of the present invention.

FIG. 2A is an enlarged view showing a part of a compound needle;
Fig. 2-B is a vertical cross-sectional view of Fig. 2-A seen from the side surface of the hook-and-door switch, and Fig. 2-C is an enlarged view of a cross-sectional view taken along the line I-I in Fig. 2-A. Is.

FIG. 3 is a continuous view showing a state from a state where the hook is opened to a time when it is closed, and FIG. 3A is a state where the hook is fully opened, and FIG.
Is a state immediately before swinging, FIG. 3-C is a swinging state, FIG.
-D is a state in which the uppermost position of the inclined surface is raised, and Fig. 3-E is a diagram in which the hook is closed.

FIG. 4 is a diagram showing opening and closing of a hook in a modification of the embodiment of the present invention.

FIG. 5 is a diagram showing opening and closing of a hook according to another modification of the present invention.

FIG. 6 is a diagram showing an advancing locus of the tongue tip portion from the open state to the closed state of the hook portion of the hook portion of some types of compound needles manufactured by implementing the present invention.

FIG. 7 shows still another modified example of the present invention, showing a compound needle of a type in which transfer is performed by a blade provided on a side surface of a needle body, FIG. 7-A is a side view, and FIG. It is a top view.

[Fig. 8] Fig. 8 shows still another modified example of the present invention, showing a compound needle of a type in which transfer is performed by a hook opening and closing device, Fig. 8-A shows a state in which the hook is opened, and Fig. 8-B shows a hook. Figure 8 with the mouth closed
-C shows the state of the transfer when the hook opening and closing device is advanced to the position beyond the hook.

9 is an enlarged cross-sectional view taken along the line II-II of FIG.

[Explanation of symbols]

1, 101, 201, 301, 401 ... Compound needle, 3, 1
03, 203, 303, 403 ... Needle body, 5, 105,
205, 305, 405 ... Sliders, 7, 107, 2
07,307,407 ... Hook opening / closing device, 13,313,4
13 ... Cheek part, 17, 317, 417 ... Leading part, 1
9 ... Throat part, 21, 321, 421 ... Longitudinal groove, 2
3,423 ... Tongue portion, 25a, 25b ... Cam surface, 29
... recessed portion, 31, 61, 461 ... engaging projection, 41 ... mounting portion, 43, 443 ... groove, 47 ... upper arm portion, 51 ... tongue upper edge portion, 53 ... tongue lower edge portion, 53a ... bulging portion , 55 ... Tongue tip portion, 360 ... Blade, 361 ... Base portion, 363 ... Tip portion, 365 ... Curved portion, 366, 374, 482 ... Step portion, 368, 468 ... Leading portion upper edge portion, 370, 372 ...
Recesses, 480 ... Steps

Claims (10)

[Claims] 1. A needle main body having a hook portion at a tip of a needle stem, a slider movable in a longitudinal direction of the needle main body, a tongue at one end thereof, and a hook opening / closing member which is swingably attached to the slider. A knitting machine, characterized in that the hook opening / closing element is configured to open and close the hook opening of the hook by swinging displacement of the hook opening / closing member in a relative movement relationship between the needle body and the slider. Compound needle. 2. The swinging of the hook opening / closing member raises the tongue tip when the needle body and the slider relatively move in the direction of closing the hook opening, and the needle body and the slider open the hook opening. The compound needle for a knitting machine according to claim 1, wherein the tongue tip is moved down when the tongue is relatively moved in the direction. 3. The swinging of the hook / closure opening is caused by a part of the hook / closure opening / closing member engaging with a cam surface formed on the needle body. Compound needle for knitting machine. 4. A tongue lower end portion of the hook-and-mouth opening is raised when the tongue lower edge portion is engaged with a cam surface formed on the needle body, and an engaging projection provided on the rear side of the tongue portion is formed on the cam surface. The compound needle for a knitting machine according to claim 3, wherein the tongue tip portion is lowered when engaging with the cam surface formed at the rear. 5. The knitting according to claim 4, wherein the cam surface formed on the needle main body is formed on a groove bottom of an accommodating groove that accommodates at least a tip end portion of a tongue portion of the hook opening / closing element. Machine compound needle. 6. A slider is provided with a mounting portion provided at a front end thereof for pivotally supporting an upper arm portion of the hook opening / closing member, and a tongue front end portion is provided below the front of the upper arm portion, and an engaging projection is provided at a rear side thereof. The compound needle for a knitting machine according to claim 1. 7. The compound needle for a knitting machine according to claim 1, wherein a bulging portion is formed on a lower edge of the tongue of the hook-and-mouth opening / closing element. 8. The compound needle for a knitting machine according to claim 1, wherein a concave portion for delaying knockover timing is formed at an upper edge of the tongue of the hook opening / closing element. 9. The compound needle for a knitting machine according to claim 1, wherein the compound needle is provided with a transfer member for forming a receiving needle entry space for handing over the stitch. 10. The transfer member is provided on a hook opening / closing member, and when a tip end side including a tongue portion of the hook opening / closing member goes over the hook, a receiving needle is provided at a portion beyond the hook. The compound needle for a knitting machine according to claim 9, wherein a space for entry is formed.