JP4374313B2 - Flat knitting machine - Google Patents

Description

  The present invention relates to a flat knitting machine.

Generally, when a knitted fabric is knitted in a flat knitting machine, a transition yarn is generated between garments.
As an end yarn processing device that holds and cuts such a transition yarn with a flat knitting machine, a hook bar having a hook at the tip and a cutter bar having a cutter at the tip are provided on the needle bed, and the knitting yarn is hooked by the hook bar. The one that is fed into the cutter bar (Patent Document 1) and the one that is configured to capture the knitting yarn and pull it into the cutting mechanism part by the vertical movement and opening and closing of the nip claw (Patent Document 2), and the vertical movement and opening and closing. There is a hook type with a simple structure that moves up and down instead of a moving nip claw.
Japanese Patent Publication No.1-56175 Japanese Patent No. 2547683

However, since the hook bar is at the same height as the knitting needle in the yarn gripping and cutting device described in Patent Document 1, the knitting yarn must be in a low position in order to securely hook the knitting yarn on the hook bar. In order to bring the knitting yarn to a low position, the yarn feeder carried by the carriage must be located far away from the knitting area of the knitted fabric. .
Further, in the knitting yarn gripping and cutting device described in Patent Document 2, it is necessary to provide a stroke for the nip claw to move up and down. In the hook type, in order to hold the end yarn on the hook, the knitting claw is moved up and down more than the nip claw. There is a need.

In addition, in the hook type, the portion where the hook member rises and comes into contact with the knitting yarn is inclined, so that the knitting end position is far away from the hook member and the knitting yarn tension is small. In the case of a knitting yarn that is not slippery and easily stretched, such as a rubber yarn, it does not slip on the inclined surface and rises together with the hook member, so that it has been necessary to lengthen the lifting / lowering stroke of the hook member.
The present invention has been proposed in view of the above problems, and can provide a flat knitting machine including a yarn presser device that can reliably supply an end yarn to an end yarn processing device with a small stroke of the end yarn pulling device. The purpose is to do so.

In order to achieve the above object, the flat knitting machine according to the present invention has at least a pair of front and rear needle beds arranged in a state where the mouth portions are abutted, and is housed in the needle bed by a cam group of a carriage sliding on the needle bed. An end yarn processing device is provided on at least one of the outer sides of the needle bed of the flat knitting machine in which the knitted needle is knitted by advancing and retreating the knitting needles, and the end yarn processing device is provided with an end yarn. In a flat knitting machine provided with an end yarn lowering device for guiding the yarn, a yarn holding device is provided on the needle bed in the vicinity of the end yarn lowering device, and this yarn holding device opens downward at the tip of the yarn holding member. The mold latching part is formed, and the rear part is provided with a sliding drive part operated by a cam group of the carriage, and the thread holding member is moved forward and backward between the latching part and the sliding drive part. Move the latch up and down The swing operating part for swinging is provided and the yarn pressing member is pushed in a sliding drive unit, after the engaging portion of the thread holding member is raised, the yarn holding member in sliding drive portion drawn in by the swinging operation portion When the latching part is lowered by the swinging operation part and the latching part holding the knitting yarn is pulled into the standby position, the latching part is further lowered by the swinging operation part, The most important feature is that the knitted yarn is held at a position lower than the knitting needle of the needle bed.

  Further, in the flat knitting machine of the present invention, the cam group of the carriage that drives the sliding drive unit is a cam group that forms a knit route or a transfer route, or a guide plate that forms a guide groove or a guide slot. It is also characterized in that the swinging operation portion is formed by providing the yarn pressing member in parallel with at least one side surface of the yarn pressing member and providing the guide portion guided by the guide groove or the guide long hole in the yarn pressing member.

  According to the flat knitting machine equipped with the yarn pressing device of the present invention, the yarn pressing member provided on the needle bed is operated by the cam group of the carriage, so that the knitting yarn is moved after the hook portion of the tip portion has advanced. Since the knitting yarn pulled into the lower position is surely fed to the end yarn lowering device of the end yarn processing device, the end of the knitted fabric and the hook member are separated as before, and the tension of the knitting yarn is small. There is an advantage that the knitting yarn can be reliably supplied to the hook member even in the case of knitting yarn such as a thread rubber thread or the like having poor sliding.

In addition, since the knitting yarn pressed down to the lower position of the standby position is lower than the knitting needle, there is no obstacle during knitting of the knitted fabric, and the end yarn is fed to the end yarn lowering device of the end yarn processing device. There is also an advantage that the yarn can be reliably fed even with a short stroke.
Further, since the hooking portion of the yarn pressing member is formed in a saddle shape that opens downward, for example, when the end yarn is cut by the end yarn processing device and the knitted fabric is lowered below the tooth opening, The knitting yarn comes out naturally from the hook. Accordingly, there is also an advantage that the knitted fabric can be easily separated simply by cutting the knitting yarn with the end yarn processing device.

  In addition, when the cam group of the carriage that drives the sliding drive unit is a cam group that forms a knit route or a transfer route, a dedicated driving device for driving the sliding drive unit is provided. There is an advantage that it can be implemented at a low cost with a simple structure without being required, and can be easily implemented in an existing flat knitting machine.

  Hereinafter, a preferred embodiment of a flat knitting machine according to the present invention will be described with reference to the drawings.

FIG. 1 is a side view showing an outline of a yarn presser device portion, and reference numeral 1 in the drawing generally indicates a flat knitting machine.
In FIG. 1, the knitting needle portion 2 is shown in the left half and the yarn presser device portion 3 is shown in the right half.
The flat knitting machine 1 includes a pair of front and rear needle beds 5 disposed in a state where the tooth lip portion is brought close to the frame 4 so as to face each other in a shape of “C”, and in the longitudinal direction of the needle bed 5. An end yarn processing device 52 comprising a cutter mechanism 6 provided on each of the outer side portions and an end yarn lowering mechanism 7 for lowering the knitting yarn supplied to the cutter mechanism 6 is provided. The needle bed 5 is provided with a yarn pressing device 8 for pulling down the knitting yarn.

  The needle bed 5 is provided with a carriage (both not shown) configured to reciprocate by belt driving means on the upper surface, and the carriage is shown in FIG. 5 of Japanese Patent Publication No. 1-56175, for example. A plurality of known knitted fabric knitting groups (not shown) provided with such a needle selection device are provided.

A knitting needle portion 2 shown in the left half of FIG. 1 is accommodated in a needle groove 9 of a needle bed 5 so that a compound needle type knitting needle 12 having a slider 11 in a needle body 10 is slidably moved back and forth. A swingable sinker 13 is provided in each mouth part of the beds 5 and 5.
The knitting needle 12 shown in the knitting needle portion 2 has a selector member 14 selected by a needle selection mechanism (not shown) of the carriage and a bat 16 of the jack member 15 sunk in the needle groove 9 by the selected selector member 14. And a selector member 17 that raises the standby position that is not affected by the cam of the carriage to the position that receives the action of the cam of the carriage, and the selector member 14 is selected by the needle selection mechanism of the carriage to select the selector member 17. Is lifted from the inside of the needle groove 9, the butt 16 of the jack member 15 that has been submerged in the needle groove 9 is raised to a position where the action of the cam of the carriage is received from the needle groove 9. And a carriage cam group provided with a plurality of cams and transfer cams.

  1 includes a selector 18 that selects a needle by a needle selection mechanism of a carriage, and a bat 20 of a jack 19 by the selected selector 18 so that a needle groove of the knitting needle portion 2 9, a selection member 22, a slide body member 23, a thread presser member 24, a guide pin 25, and a fixed member that sink into a mounting groove 21 formed in substantially the same shape as 9 and rise from a standby position to an action position that receives the action of a cam of a carriage. The selector member 18, the selection member 22, and the jack 19, each having a piece member 26 and a guide plate 27, are formed in the same shape as the selector member 14, the selection member 17, and the jack member 15 in the knitting needle portion 2. in use. That is, when the selector 18 is selected by the carriage needle selection mechanism and the selection member 22 is lifted from the mounting groove 21, the bat 20 of the jack 19 that has been sunk in the mounting groove 21 by the rising of the selection member 22 is Ascending from the inside of the mounting groove 21 to a position to receive the action of the cam of the carriage, the sliding body member 23 is slid along the mounting groove 21 by being slid by a knit route or a transfer route of the carriage cam group. It is configured.

As shown in FIG. 2, the guide plate 27 has a guide long hole 28 to be described later formed in the front end portion thereof, and is implanted in the mounting groove 21 formed in the notched portion 29 of the needle bed 5 near the mouth. Has been.
As shown in FIG. 3, the guide long hole 28 formed in the guide plate 27 includes a pull-in adjustment portion 30, a storage portion 31 formed obliquely downward from this, and a pull-in adjustment portion 30. The forward / backward sliding portion 32 positioned below and the upwardly inclined portion 33 having the horizontal portion 34 on the tip side are formed in series, and the guide pin 25, the guide slot 28, Thus, a swing operation part 35 is formed.

Since the sliding body member 23 receives the rear part of the thread pressing member 24 at the tip part, a receiving part 36 which is wide and cut into a U shape is formed, and the tip part of the jack 19 is joined to the intermediate part. A bonding recess 38 is formed.
The front end of the jack 19 is formed with a joint convex portion 37 connected to the joint concave portion 38, and behind it is a sliding drive bat (sliding operation) which is slid by a cam group of a carriage. The drive unit) 20 protrudes upward.
The thread presser member 24 has a hook-shaped hook 40 that is hooked at the tip of the hook 39 and opens downward, and an oval shape that is received by the receiving portion 36 of the sliding body member 23 at the rear. An oscillating pivot 41 is formed, and the oscillating pivot 41 is provided with two pin insertion holes 42 through which the guide pins 25 are inserted.
As shown in FIG. 2, the guide pin 25 is inserted through the guide long holes 28 of both guide plates 27 and 27 with the sliding body member 23 sandwiched from both sides, and the tip portion is fixed by the fixing piece member 26. ing.

The cutter mechanism 6 shown in FIG. 1 is provided on each of the left and right outer portions of the needle bed 5 in the longitudinal direction (front-rear direction in the figure), and a case 43 is attached to the frame 4 of the flat knitting machine 1. The cutter 44 is housed, and the cutter 44 is driven and controlled by a driving motor 45.
Further, the end yarn lowering mechanism 7 provided in the cutter device 44 is provided with a hook-shaped hook member 49 at the upper end portion of the lifting / lowering motors 46 and 47 attached to the case 43 and the lifting / lowering rod 48 driven up and down by this. A side upper surface portion of the hook member 49 is formed on an inclined surface 50 for sliding off in a single-flow state with a lower left side in the drawing and a higher right side.

After a knitting yarn is fed from a yarn feeder (not shown) and a predetermined knitted fabric is knitted by traveling of the carriage, the carriage comes out of the knitting region from the knitting end position and the end yarn is processed by the cutter device 44. Taking the case as an example, the operation of the thread presser 3 will be described next.
The yarn feeder is carried at the position of the knitting cam preceding the knitting cam that slides the knitting needle 12 among the plurality of knitting cams mounted on the carriage.
When the carriage is reciprocatingly slid on the needle bed 5 within the knitting area of the knitted fabric, the yarn pressing device 3 is not selected. Therefore, as shown in FIG. In the storage portion 31 formed obliquely downward, the front guide pin 25 is positioned in the forward / backward sliding portion 32 below the storage portion 31.
As a result, the yarn pressing member 24 is in a standby position lower than the knitting needle 12 in a state where the hook-shaped hook 40 is closest to the mouth portion of the needle bed 5.
At this time, the knitting yarn (end yarn) 51 from the yarn feeder taken at the knitting cam position on the preceding side of the carriage is located at the tooth opening as shown in FIG.

Next, when the carriage goes out of the knitting area of the knitted fabric, the selector 18 is selected by a selection mechanism (not shown), and the selection member 22 is pushed up and rises to protrude from the mounting groove 21. Protrudes from the mounting groove 21 and is operated by the knitting cam on the trailing side of the carriage cam group.
In this state, when the carriage slides and the butt 20 of the jack 19 is pushed out to the tooth opening side by the knitting cam, the rear guide pin 25 is used for the forward and backward sliding of the same guide long hole 28 as the front guide pin 25. Since it is located in the portion 32, the thread holding member 24 that has been in the standby position in FIG. 4 so far rises and swings so that the collar 39 is substantially horizontal as shown in FIG.
Further, when the butt 20 of the jack 19 is pushed in the direction of the mouth of the needle bed 4 by sliding of the carriage, both guide pins 25 and 25 of the thread pressing member 24 slide on the sliding portion 32 of the guide long hole 28. As shown in FIG. 6, the thread presser member 24 greatly protrudes from the tooth opening of the needle bed 5 with the collar 39 being substantially horizontal.
At this time, the knitting yarn 51 may enter the hook 40. However, when the end of the knitted fabric is separated from the hook 40 and the tension of the knitting yarn is small, or when the knitting yarn such as rubber yarn is not slippery. In this case, as shown in FIG. 6, the knitting yarn 51 is pushed out together with the hook 40 to the left in the drawing.

Subsequently, when the butt 20 of the jack 19 reaches the top of the cam for knitting the carriage, the butt 20 of the jack 19 is further pushed out in the direction toward the mouth of the needle bed 4 , and the front guide pin 25 is inserted into the guide slot. 28, the guide pin 25 on the rear side is located at the tip part of the forward / backward sliding portion 32 of the guide long hole 28 lower than the position of the front guide pin 25. As shown in FIG. 7, the hook 40 swings greatly upward as shown in FIG. As the hook 40 swings upward, the knitting yarn 51 that has been pushed to the left in the drawing together with the hook 40 surely enters the hook 40 that has swung upward.
Therefore, when the knitting yarn 51 is at a high position, or even the knitting yarn 51 coming out of the plurality of yarn feeders can surely enter the hook 40 that has swung upward.

When the bat 20 of the jack 19 passes the top of the knitting cam of the carriage and is gradually pulled, the yarn pressing member 24 is pulled to the mounting groove 21 side by the reverse operation to that described above.
That is, when the bat 20 of the jack 19 is lowered from the top of the cam for knitting the carriage, first, both guide pins 25 and 25 of the thread pressing member 24 slide to the drawing side by the sliding portion 32 of the guide long hole 28. Therefore, as shown in FIG. 8, in the yarn pressing member 24, the hook 40 is lowered and the collar portion 39 is in a substantially horizontal state, and the knitting yarn 51 is taken into the hook 40.

  Next, when the bat 20 of the jack 19 is further pulled down by the knitting cam of the carriage, the yarn holding member 24 holding the knitting yarn 51 on the hook 40 is pulled into the mounting groove 21 side as shown in FIG. By further lowering the bat 20 of the jack 19, the rear guide pin 25 is a storage portion 31 formed obliquely downward of the guide long hole 28, and the front guide pin 25 is a lower and forward sliding portion lower than the storage portion 31. 10, the thread holding member 24 is pulled into the standby position shown in FIG. 10 where the hook-shaped hook 40 is closest to the tooth opening portion of the needle bed 5 and is lower than the knitting needle 12.

After the knitting yarn 51 is drawn into the standby position lower than the knitting needle 12 by the hook 40, the end yarn pulling mechanism 7 is driven, and the hook member 49 is once raised and then lowered.
When the hook member 49 is raised, the ridge portion 39 of the yarn pressing member 24 presses the knitting yarn 51 about to rise along the inclined surface 50 of the hook member 49. The hook member 49 can catch the knitting yarn 51 at a short ascent distance even when the knitting yarn is difficult to slide or when the knitting end position is separated from the hook member and the tension is small.

Next, when the hook member 49 is lowered, the knitting yarn 51 hooked on the hook member 49 is supplied to the cutter mechanism 6 and processed.
Here, since the opening of the hook 40 on which the knitting yarn 51 of the yarn holding member 24 is hooked is downward, when the knitted fabric is lowered below the tooth opening after being cut by the cutter mechanism 6, the hook 40 naturally comes off from the hook 40. Get out. Therefore, the knitted fabric can be separated only by cutting the knitting yarn 51 by the cutter mechanism 6, and control such as opening the knitting yarn 51 of the hook 40 is not required.

11 is a diagram showing a state in which the guide pin 25 is released to the retracting adjustment portion 30 in order to prevent an accident when the bat 20 of the jack 19 of the thread presser device 3 is largely retracted due to a malfunction or the like. is there.
In the above embodiment, the guide plate 27 having the guide long holes 28 is provided on both sides of the yarn pressing member 24. However, the guide plate 27 is not limited to this, and may be only one side of the yarn pressing member 24. The guide long hole 28 may be a recess instead of the through hole.
Further, a projection can be formed on the thread holding member 24 instead of the guide pin 25, and the shape of the guide long hole 28 can be variously changed in accordance with a desired operation locus of the thread pressing member 24. Needless to say.
In the above embodiment, the cutter mechanism 6 is provided with the end thread pulling mechanism 7 having the hook member 49. However, the present invention is not limited to this, and instead of the hook member 49, the cutter mechanism 6 is configured to be gripped with a nip claw. You can also.
In addition, in the above-described embodiment, the cutter mechanism 6 as an end yarn processing device is provided on both sides of the needle bed, but the present invention is not limited to this, and can be provided only on one side. Of course.
Moreover, in the said embodiment, although the knitting needle 12 is made into the compound needle, it is not restricted to this, Even if it is a latch needle and another knitting needle, it can implement.
Furthermore, in the above embodiment, the yarn pressing device 8 is driven by the knitting cam on the trailing side of the carriage, but the yarn pressing device is driven using a transfer cam in the carriage or an empty system. Needless to say, a dedicated thread presser driving course may be provided.

These are the schematic views of the needle bed portion of the flat knitting machine according to the present invention. These are the top views of the needle bed part of the flat knitting machine concerning this invention. These are exploded views of the yarn presser device portion in the flat knitting machine according to the present invention. These are side views of a state in which the hook of the yarn pressing member of the yarn pressing device portion in the flat knitting machine according to the present invention is in the standby position. These are the side views in the middle of the hook of the yarn holding member of the yarn holding device part in the flat knitting machine concerning this invention advancing. These are the side views in the middle of the hook of the yarn holding member of the yarn holding device part in the flat knitting machine concerning this invention advancing. These are side views of the state where the hook of the yarn pressing member of the yarn pressing device portion in the flat knitting machine according to the present invention has advanced most. FIG. 4 is a side view immediately before the knitting yarn is hooked on the hook of the yarn pressing member of the yarn pressing device portion of the flat knitting machine according to the present invention and the hook is pulled. These are side views in the middle of the hook being pulled in the state where the knitting yarn is hooked on the hook of the yarn holding member of the yarn holding device in the flat knitting machine according to the present invention. These are side views of a state in which the knitting yarn is hooked on the hook of the yarn pressing member of the yarn pressing device in the flat knitting machine according to the present invention and the hook is pulled in the other state. These are side views when the hook of the yarn pressing member of the yarn pressing device portion in the flat knitting machine according to the present invention is most retracted.

DESCRIPTION OF SYMBOLS 1 ... Flat knitting machine 5 ... Needle bed 6 ... Cutter mechanism 7 ... End yarn lowering device 8 ... Yarn presser 12 ... Knitting needle 24 ... Yarn presser member 25 ... Guide pin 27 ... guide plate 28 ... guide slot 35 ... oscillating operation part (25 ... guide pin, 28 ... guide slot)
40 ... Hook (holding part)
52 ... End yarn processing apparatus

Claims (3)

At least a pair of front and rear needle beds are arranged with the mouth part abutted, and a knitting needle housed in the needle bed is moved forward and backward by a cam group of a carriage that slides on the needle bed so as to knit the knitted fabric. In a flat knitting machine in which an end yarn processing device is provided on at least one of the outer sides in the longitudinal direction of the needle bed of the flat knitting machine, and an end yarn pulling device for guiding the end yarn is provided in the end yarn processing device. A thread presser is provided on a needle bed in the vicinity of the thread puller, and this thread presser is formed with a hook-shaped hooking portion that opens downward at the tip of the thread presser member, and a rear cam group. in conjunction with the sliding drive portion is provided to be operated, between the engaging portion and the sliding drive unit, the rocking operation portion for swinging the engaging portion vertically provided at forward and backward sliding of the yarn pressing members, Yarn at sliding drive And even the member is pushed out, after the engaging portion of the thread holding member is raised by the swing operating part, and the yarn pressing member is retracted in the sliding drive portion, engaging portion is lowered by swinging the operation unit, eds When the catching part holding the yarn is pulled into the standby position, the catching part is further lowered by the swing operation part , and the knitting yarn held by the catching part is held at a position lower than the knitting needle of the needle bed. A flat knitting machine characterized by being configured as described above. 2. The flat knitting machine according to claim 1 , wherein the cam group of the carriage that drives the sliding drive unit is a cam group that forms a knit route or a transfer route.   A guide plate in which a guide groove or a guide long hole is formed is arranged side by side on at least one side surface of the thread pressing member, and a guide portion guided by the guide groove or the guide long hole is provided in the thread pressing member to The flat knitting machine according to claim 1 or 2, wherein the flat knitting machine is formed.

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