WO2010041433A1

WO2010041433A1 - Yarn nipping device for weft knitting machine

Info

Publication number: WO2010041433A1
Application number: PCT/JP2009/005198
Authority: WO
Inventors: ▲高▼台雅裕
Original assignee: 株式会社島精機製作所
Priority date: 2008-10-10
Filing date: 2009-10-07
Publication date: 2010-04-15
Also published as: JPWO2010041433A1; JP5414683B2; CN102177287A; EP2354286A1; CN102177287B; EP2354286B1; EP2354286A4

Abstract

A yarn holding device for a weft knitting machine formed in such a manner that stitches are not dense and a yarn is not broken even if the yarn is nipped. A lock lever (30) is locked when biased by a wire spring (31) and the end of the short arm (30a) is brought into contact with the locking section (13a) of a nip claw (13) while nip claws (11, 13) and a nip claw (12) are closed. The intermediate portion between the short arm (30a) and the long arm (30b) of the lock lever (30) forms a support section, and the lock lever is supported in such a manner as to be displaced swingably about a connection pin (32) which connects the upper end of a small rod (15) and the nip claw (12). The upper end of a small rod (16) is connected to the two nip claws (11, 13) through a connection pin (33) while being sandwiched between the nip claws (11, 13). Since a capturing space (10c) is formed between the ends of the nip claws (11, 13) and the nip claw (12), the yarn can be pulled down in such a state that the yarn is not nipped even if the yarn is captured.

Description

Knitting yarn gripping device of flat knitting machine

The present invention relates to a knitting yarn gripping device of a flat knitting machine that is provided on the side of a needle bed and grips the knitting yarn.

Conventionally, in a flat knitting machine 1 as shown in a simplified manner in FIG. 7, at least a pair of needle beds 2 are provided so as to face each other in the front-rear direction with the tooth opening 3 interposed therebetween. The tip side of the knitting needle (not shown) advances from the front and back needle beds 2 to the mouth 3, and a product such as a sweater is continuously knitted as a knitted fabric 4 such as a cylinder while forming a final shape, It can be manufactured without sewing. When such a knitted fabric 4 is continuously knitted, the knitting yarn 6 is supplied to the knitting needle from the yarn feeder 5 that moves above the tooth mouth 3. When the use of the knitting yarn 6 for the knitted fabric 4 is finished, the yarn feeder 5 comes out of the needle bed 2. The knitting yarn 6 is inclined and extended from the final loop knitted on the knitted fabric 4 to the yarn feeder 5.

For the next knitting, it is necessary to discharge the knitted fabric 4 from the knitting needle of the needle bed 2 to the lower side of the tooth opening 3 to open the knitting needle. When the knitted fabric 4 is discharged in a state where the knitting yarn 6 is connected from the final loop to the yarn feeder 5, the knitting yarn 6 is also connected to the start loop of the knitted fabric 4 to be knitted next, and the knitted fabric 4 is sequentially manufactured. Thus, the knitting yarn 6 continues. When the knitting yarn 6 is continuous, the knitted fabric 4 is not smoothly discharged, and it is necessary to detach the continuous knitting yarn 6 after discharging.

The cutting device 7 is provided for cutting the knitting yarn 6 extending from the knitted knitted fabric 4 to the yarn feeder 5. If the knitting yarn 6 is cut, the knitted fabric 4 is discharged smoothly, and the operation of separating the knitting yarn 6 between the knitted fabrics 4 after the discharge becomes unnecessary. However, only by cutting, the tip of the knitting yarn 6 remaining on the yarn feeder 5 side is in a floating state. Even if the yarn feeder 5 moves on the needle bed 2 during the knitting of the next knitted fabric 4, the knitting yarn 6 whose tip is in a floating state moves with the yarn feeder 5 and is supplied to the knitting needle that advances to the tooth mouth 3. Thus, the knitted fabric 4 cannot be used for knitting.

The gripping device 8 is provided at the side of the region where the knitting needle advances and retreats from the front and back needle beds 2 at the mouth 3, and even if the knitting yarn 6 extending to the yarn feeder 5 is cut by the cutting device 7, Can be held (see, for example, Patent Document 1). When knitting the next knitted fabric 4, the yarn feeder 5 moves above the tooth mouth 3, and the knitting yarn 6 can be supplied to the knitting needle that advances and retreats to the tooth mouth 3. Holding of the knitting yarn 6 by the gripping device 8 is performed by gripping mechanisms 9a and 9b which are provided at the upper end and can be opened and closed. The gripping mechanism 9a that is closed when lowered is open so that the knitting yarn 6 that extends from the final loop of the knitted fabric 4 to the yarn feeder 5 can be captured, as indicated by a two-dot chain line. Ascending as the holding mechanism 9b. When descending is started after rising, the gripping mechanism 9a is closed. After the descending, the knitting yarn 6a between the gripping mechanism 9a and the knitted fabric 4 is cut by the cutting device 7. In the gripping device 8 after descending, the gripping mechanism 9a in the closed state can grip and hold the tip of the knitting yarn 6b that is pulled out from the yarn feeder 5 and becomes an end yarn.
Japanese Examined Patent Publication No. 4-74463

As shown in FIG. 7, the gripping device 8 disclosed in Patent Document 1 includes a knitting yarn between itself and the knitted fabric 4 because the gripping mechanism 9 a in a closed state grips and lowers the knitting yarn 6. 6a is extended from a two-dot chain line state to a solid line state. The knitting yarn 6b from the gripping mechanism 9a to the yarn feeder 5 in the closed state is replenished with the knitting yarn 6 from the yarn feeder 5 even if the knitting yarn 6b extends from the two-dot chain line state to the solid line state. Since the knitting yarn 6 is not replenished from the yarn feeder 5 to the knitting yarn 6a, the tension of the knitting yarn 6a is increased. If the tension of the knitting yarn 6a becomes excessively high, the stitches of the final loop of the knitted fabric 4 may become clogged or the yarn may be broken during the knitting of the next course. Depending on the type of the knitting yarn 6, there is a possibility that the yarn may break when it is gripped by the gripping device 8 and lowered.

Even if the stitches are not clogged even if the yarn breakage occurs, when a non-sewn product is manufactured as the knitted fabric 4, the clogged stitches appear on the surface, which causes a quality problem. If the knitted fabric 4 is a part to be commercialized by sewing, the clogged stitch portion is generally used as a sewing allowance and does not appear on the surface of the product.

An object of the present invention is to provide a knitting yarn gripping device for a flat knitting machine which does not clog stitches or cause yarn breakage even when the knitting yarn is gripped.

The present invention provides a knitting yarn that crosses from a knitted fabric that is knitted on a needle bed to a yarn feeder when the yarn feeder of the knitting yarn moves outward of the tooth knitting in a flat knitting machine. In the knitting yarn gripping apparatus of a flat knitting machine, which is provided with a gripping mechanism at the upper end that opens and can be caught when ascending, and closes and catches when descending after ascending, and a lifting mechanism is provided below the grasping mechanism.
A locking member that locks the gripping mechanism that descends after being raised in the middle of closing, and holds it in the capturing stage before gripping the knitting yarn;
A release mechanism that acts on the lock member when the gripping mechanism continues to descend after locking, releases the lock, and causes the gripping mechanism to grip the knitting yarn;
A knitting yarn gripping device for a flat knitting machine.

Further, in the present invention, the lock member has two arms extending from a support portion supported so as to be able to swing and displace, and performs locking with one arm,
The release mechanism is provided in the elevating mechanism and acts on the other arm of the lock member.

Further, in the present invention, the gripping mechanism has three plate-like nip claws that are stacked so that the base end side swings and displaces around a common swing axis,
The two outer nip claws are connected and swing-displaced in the same direction, and the inner nip pawl is swing-displaced in the opposite direction to the outer two nip claws. The inside nip claw tip side opens and closes,
The lock member is supported by the inner nip claw so that the support portion can swing and displace, and the one arm acts on one of the two outer nip claws, and remains in the capturing stage. It is characterized by that.

In the present invention, the outer nip claw and the inner nip claw are connected to a rod for forming a link mechanism to open and close,
The support portion of the lock member is supported by a connecting portion of the rod to the inner nip claw so as to be swingable and displaceable.

According to the present invention, the knitting yarn gripping device of the flat knitting machine includes a lock member and a release mechanism. The lock member locks the gripping mechanism that descends after being lifted in the middle of closing and stays at the stage of catching before gripping the knitting yarn, so that the knitting yarn is replenished from the yarn feeder during lowering, and the tension of the knitting yarn is reduced. It is possible to prevent the stitch from becoming excessively high and prevent the stitches from becoming clogged or causing yarn breakage. The release mechanism acts on the lock member when the gripping mechanism continues to descend after locking, and releases the lock and causes the gripping mechanism to grip the knitting yarn, so that the tip of the knitting yarn that is the end yarn must be securely held. Can do.

Further, according to the present invention, the lock and the release thereof can be performed at the time of raising / lowering by the raising / lowering mechanism with a simple configuration using the lock member in which the two arms extend from the swingable support portion.

Further, according to the present invention, it is possible to provide a lock member that acts between the nip claws that are opened and closed so that the nip claws can be easily locked in the middle of closing.

Further, according to the present invention, since the lock member can be incorporated using a link mechanism that opens and closes the nip claw, an increase in the number of parts can be minimized.

FIG. 1 is a front view and a partial rear view showing a schematic configuration of a knitting yarn gripping apparatus 10 of a flat knitting machine as an embodiment of the present invention. FIG. 2 is a front view showing a state in which the claw portion 26a of the swing claw 26 is fitted to the notch portion 22b of the operation plate 22 and locked in the knitting yarn gripping device 10 of the flat knitting machine of FIG. It is a surface view and a top view. FIGS. 3A and 3B are a front view and a partial rear view showing a state where the holding mechanism 10a is unlocked in the knitting yarn holding apparatus 10 of the flat knitting machine of FIG. FIG. 4 is a front view, a left side view, and a plan view showing the configuration of the parts of the gripping mechanism 10a and the support block 40 in the knitting yarn gripping apparatus 10 of the flat knitting machine of FIG. FIG. 5 is a front view and a left side view showing the configuration of the mounting plate 18, the hook 19, the operation plate 22, and the swinging claw 26 as parts of the lifting mechanism 10 b in the knitting yarn gripping apparatus 10 of the flat knitting machine of FIG. 1. It is. FIG. 6 is an exploded perspective view showing a side configuration of the flat knitting machine including the knitting yarn gripping device 10 of the flat knitting machine of FIG. FIG. 7 is a partial front view showing a simplified configuration of the flat knitting machine 1 including the conventional gripping device 8.

DESCRIPTION OF SYMBOLS 10 Knitting yarn gripping device of flat knitting machine 10a Holding mechanism 10b Elevating mechanism

10c Capture space

11, 12, 13 Nip claw 13a Locking part 14

Nip shaft

15, 16 Small rod 17 Rod shaft 18 Mounting plate 19 Hook 22 Operation plate 23 Tension Spring 26 Oscillating claw 28 Pinion 30 Lock lever 40 Support block

FIG. 1 shows a schematic configuration of a knitting yarn gripping apparatus 10 of a flat knitting machine as an embodiment of the present invention. The knitting yarn gripping device 10 of the flat knitting machine basically has the same configuration as the yarn gripping device disclosed in Patent Document 1, has a gripping mechanism 10a at the upper end, and moves up and down below the gripping mechanism 10a. It has a mechanism 10b. The figure shows a locked state at the capturing stage of the knitting yarn gripping device 10 of the flat knitting machine as a front configuration 10A viewed from the outside of the flat knitting machine, and partially shows a back configuration 10B.

The gripping mechanism 10 a includes three nip

claws

11, 12, and 13, and the two outer nip

claws

11 and 13 are interlocked to open and close the tip with the inner nip claw 12. The three nip

claws

11, 12, and 13 swing and displace about a common nip shaft 14 to open and close the front end side. The upper ends of the

small rods

15 and 16 are connected to the nip claw 12 and the

nip claws

11 and 13, respectively. The lower ends of the

small rods

15 and 16 are connected by a rod shaft 17. The nip

claws

11 and 13 and the nip claw 12 and the

small rods

15 and 16 form a link mechanism that opens and closes between the tips according to the distance between the nip shaft 14 and the rod shaft 17.

The nip shaft 14 is fixed near the upper end of the mounting plate 18. The mounting plate 18 is generally plate-shaped extending vertically, and a long hole 18a is formed in the middle. A rack 18 b is formed on one side of the mounting plate 18. A cam recess 18 c is formed on the other side of the mounting plate 18. Near the lower end of the mounting plate 18, the hook 19 is mounted in a state that can swing and displace around the hook shaft 20. The hook 19 is generally L-shaped, and the tip of the long side is supported by the hook shaft 20 so as to be swingable and displaceable. The long side of the hook 19 is pressed from the side by the pressing spring 21 and is urged so as to protrude toward the tip side of the short side.

The rod shaft 17 is fixed near the upper end of the operation plate 22. The operation plate 22 is connected to the mounting plate 18 via a tension spring 23. The tension spring 23 is accommodated in a space formed by a long hole 22 a formed in the middle of the operation plate 22 and a long hole 18 a of the mounting plate 18. The operation plate 22 is used so as to overlap the mounting plate 18, and a notch 22 b is formed on the side of the mounting plate 18 where the cam recess 18 c is formed. The cam recess 18 c and the notch portion 22 b are provided for operating the swinging claw 26 that can swingably move around the swinging shaft 25. When the roller 27 attached to the swinging claw 26 is guided by the cam recess 18c and the claw 26a at the tip of the swinging claw 26 is fitted into the notch 22b, the operation plate 22 is locked. Locking between the mounting plate 18 and the operation plate 22 is also performed by the hook 19.

The mounting plate 18 has a side rack 18b meshed with the pinion 28. The mounting plate 18 and the pinion 28 are the main parts of the lifting mechanism 10b. When the rotation shaft 29 of the pinion 28 is rotationally driven by a motor or the like, the mounting plate 18 can be displaced up and down. Since the tension spring 23 biases the operation plate 22 closer to the mounting plate 18, the gripping mechanism 10a is biased in the closing direction via the link mechanism. The mounting plate 18 and the operation plate 22 are moved up and down so as to slide relative to the support block 40. The support block 40 is attached to the side of the needle bed with a flat knitting machine. The support block 40 also supports the rocking shaft 25 and the rotating shaft 29 of the rocking claw 26, and is therefore included as a main part in the lifting mechanism 10b. A contact portion 40a is provided at the lower portion of the support block 40, and when the tip of the hook 19 comes into contact, the locked state between the mounting plate 18 and the operation plate 22 by the hook 19 is released.

The knitting yarn gripping device 10 of the flat knitting machine includes a lock lever 30 that causes the gripping mechanism 10a to lock the link mechanism in the middle of closing, and to keep it in a capturing stage before gripping the knitting yarn. The lock lever 30 is generally L-shaped, and the tip of the short arm 30a is brought into contact with and locked with a locking portion 13a provided on the nip claw 13. The lock lever 30 is biased by the wire spring 31 in the counterclockwise direction in the front configuration 10A. The contact portion between the tip of the short arm 30a and the locking portion 13a is prevented from being released by the counterclockwise biasing by the wire spring 31. This abutting state is released when the upward force in the figure is applied near the tip of the long arm 30b of the lock lever 30, and the lock lever 30 swings and displaces in the clockwise direction.

The intermediate portion between the short arm 30a and the long arm 30b serves as a support portion by the lock lever 30, and is supported by the connecting pin 32 that connects the upper end of the small rod 15 and the nip claw 12 so as to be able to swing and displace. The upper ends of the small rods 16 are connected to each other by the connecting pins 33 while being sandwiched between the two nip

claws

11 and 13. Since the other nip

claws

11 and 12 also form a link mechanism with the

small rods

15 and 16, the connecting

pins

32 and 33 and the rod shaft 17, the nip claw 12 and the nip claw 13 are locked by the short arm 30 a. Then, the entire link mechanism is locked, and the gripping mechanism 10a can be prevented from being completely closed. As described above, the lock lever 30 functions as a lock member that locks the link mechanism. However, when the arrangement position changes, the lock lever 30 can be adapted by changing the shape.

A catching space 10c is formed between the tips of the

nip claws

11 and 13 and the nip claws 12 in the locked state, and can be pulled down without catching even if the knitting yarn is caught. Since the gripping mechanism 10a does not grip the knitting yarn, it is possible to replenish the knitting yarn through the catching space 10c from the yarn feeder into the section from the gripping mechanism 10a to the knitted fabric even during pulling. Since excessive tension is not applied between the gripping mechanism 10a and the knitted fabric, even when the gripping mechanism 10a is closed after being lowered and grips the knitting yarn, the stitches are not clogged or the yarn breakage is not caused. be able to.

FIG. 2 shows a state in which the claw portion 26a of the swing claw 26 is fitted into the notch portion 22b of the operation plate 22, and the

nip claws

11 and 13 and the nip claw 12 are opened and locked. Even if the mounting plate 18 rises due to the rotation of the pinion 28, the raising of the operation plate 22 stops. Therefore, as shown in the front configuration 10A, the left side configuration 10C, and the planar configuration 10D, the gripping mechanism 10a includes the

nip claw

11, 13 and the nip claw 12 are opened. When the mounting plate 18 continues to rise, the cam recess 18c also rises, the roller 27 moves away from the cam recess 18c and moves to a flat side portion, and the lock of the notch 22b by the claw 26a is released. However, the space between the mounting plate 18 and the operation plate 22 is also locked by the hook 19, and the gripping mechanism 10a continues to rise while being open. After the ascent, as shown in FIG. 1, the lock is released when the tip of the hook 19 comes into contact with the lower contact portion 40 a of the support block 40. However, even if the attachment plate 18 and the operation plate 22 approach each other by unlocking, as described above, the lock mechanism 30 can be locked at the capturing stage so that the gripping mechanism 10a is not completely closed.

3, after the knitting yarn is captured as shown in FIG. 1, the mounting plate 18 is lowered, and the vicinity of the tip of the long arm 30 b of the lock lever 30 is brought into contact with the contact portion 40 b provided on the upper portion of the support block 40. The state in which the lock of the gripping mechanism 10a is released is shown. As shown in the front configuration 10A and the partial rear configuration 10B, the tip of the short arm 30a of the lock lever 30 is out of contact with the locking portion 13a of the nip claw 13, so that the gripping mechanism is biased by the tension spring 23. 10a is completely closed. The knitting yarn caught in the catching space 10c formed in the locked state in FIG. 1 between the

nip claws

11 and 13 and the nip claws 12 is caught between the

nip claws

11 and 13 and the nip claws 12. Hold by gripping. Since the end yarn is securely held by the gripping mechanism 10a at the start of knitting, the next knitted fabric can be knitted without any trouble.

4 and 5 show the configuration of the main components that constitute the knitting yarn gripping device 10 of the flat knitting machine. In each part, A is shown for the front structure, C is for the left side structure, and D is for the planar structure, added to the reference numerals of the parts.

FIG. 4 shows the components of the gripping mechanism 10a and the support block 40. Of the nip

claws

11, 12, and 13, one of the two outer nip claws 13 is formed with a locking portion 13a. The lock lever 30 is generally L-shaped in the front configuration 30A, and an intermediate portion between the short arm 30a and the long arm 30b serves as a support portion 30c for swinging displacement. The long arm 30 b is formed with a step portion 30 d that accommodates the upper portion of the wire spring 31. In the wire spring 31, the tip 31a of the upper portion housed in the step 30d of the lock lever 30 protrudes from the top of the long arm 30b, and urges the lock lever 30 in the counterclockwise direction. The lower portion 31 b of the wire spring 31 is supported near the upper end of the operation plate 22.

The lock lever 30 can be incorporated as a part of a link mechanism that opens and closes the

nip claws

11, 12, and 13 including the

small rods

15 and 16, the nip shaft 14, the connecting

pins

32 and 33, and the like. When the long arm 30b of the lock lever 30 comes into contact with the contact portion 40b at the top of the support block 40, the lock is released. Therefore, the contact portion 40b of the support block 40 functions as a release mechanism that releases the lock of the gripping mechanism 10a. A part that functions as a release mechanism may be provided separately from the support block 40. In the support block 40, guide grooves 40c and 40d for accommodating the mounting plate 18 and the operation plate 22 are formed on the front and back sides, and two sets of the knitting yarn gripping device 10 of the flat knitting machine can be supported.

FIG. 5 shows the mounting plate 18, the hook 19, the operation plate 22, and the swinging claw 26 as parts of the lifting mechanism 10 b. The mounting plate 18 is provided with a long hole 18a, a rack 18b, and a cam recess 18c. Further, the mounting plate 18 includes a mounting hole 18d of the nip shaft 14, a long hole 18e that allows the head of the rod shaft 17 to escape, a mounting hole 18f of the upper end support pin of the tension spring 23, a mounting hole 18g of the hook shaft 20, and the like. Provided. The hook 19 has an L-shape, and an intermediate portion 19 a between the long side and the short side abuts on the lower portion of the operation plate 22 to lock between the mounting plate 18 and the operation plate 22. An insertion hole 19 b of the hook shaft 20 is formed at the distal end of the hook 19 on the long side.

The operation plate 22 has a long hole 22a and a notch 22b. The operation plate 22 is further formed with a contact portion 22e where the attachment hole 22c of the rod shaft 17, the attachment hole 22d of the lower end support pin of the tension spring 23, and the intermediate portion 19a of the hook 19 abut in a locked state. Near the upper end of the operation plate 22, a spring support portion 22f that supports the lower portion 31b of the wire spring 31 is also formed. The swinging claw 26 is also substantially L-shaped, and a claw portion 26a at the tip is fitted into the notch 22b of the operation plate 22 and an insertion hole 26b through which the swinging shaft 25 is inserted is provided. Further, a roller 27 is attached at a position on the claw portion 26a side in the vicinity of the insertion hole 26b.

FIG. 6 shows, in an exploded perspective view, a configuration in which two sets of knitting yarn gripping devices 10 of a flat knitting machine are provided on one side of one flat knitting machine. The drive device 50 incorporates a motor that rotates the two rotary shafts 29 and is supported by the frame of the flat knitting machine so as to face the side surface of the needle bed. The knitting yarn gripping device 10 of the two sets of flat knitting machines is accommodated in the guide grooves 40c and 40d of the support block 40 disposed between the driving device 50 and the side surface of the needle bed. A cutting device support block 51 is attached at a position close to the side surface of the needle bed and accommodates a cutting device having the same function as the cutting device 7 shown in a simplified manner in FIG. The driving force of the cutting device is also taken out from the driving device 50 and transmitted. Cover plates 52 and 53 are arranged between the knitting yarn gripping device 10 and the cutting device support block 51 of the flat knitting machine. As a flat knitting machine, a leaf spring 54 is attached to the side of the support block 40 in the front-rear direction. The leaf spring 54 presses the swinging claw 26 from the outside, and urges the claw portion 26a to be pressed against the cutout portion 22b side of the operation plate 22 in the state shown in FIG. In the gripping mechanism 10a, the lock lever 30 is disposed on the same side as the nip claw 13 with respect to the nip claw 12, so that the configuration for locking at the capture stage can be compactly accommodated.

The knitting yarn gripping device 10 of the flat knitting machine as described above is maintained in a stage where the knitting yarn is captured in the capturing space 10c in a locked state while the gripping mechanism 10a is opened and closed by the vertical movement of the lifting mechanism 10b and is closed. Can do. Even when the trapped knitting yarn is lowered, the knitting yarn is replenished between the gripping mechanism 10a and the knitted fabric through the trapping space 10c from the yarn feeder. Can be avoided. As shown in FIG. 3, when an upward force is applied near the tip of the long arm 30b of the lock lever 30, the locked state is released, the gripping mechanism 10a is closed, and the captured knitting yarn can be gripped.

3, the lock between the mounting plate 18 and the operation plate 22 by the hook 19 is released, and the lock between the operation plate 22 and the support block 40 by the swinging claw 26 is also released. However, since the roller 27 is fitted in the cam concave portion 18c of the mounting plate 18, the claw portion 26a enters above the notch portion 22b. When the pinion 28 is rotated and the mounting plate 18 is raised, the operation plate 22 is also lifted by being pulled by the tension spring 23. However, as shown in FIG. 2, the claw portion 26a comes into contact with the notch portion 22b and rises. Locked not to. When the mounting plate 18 continues to rise by the rotational drive of the pinion 28, the rod shaft 17 attached to the operation plate 22 that is locked and stopped, and the nip shaft 14 attached to the rising mounting plate 18 The interval opens. The link mechanism formed by the

nip claws

11 and 13 and the nip claws 12 and the

small rods

15 and 16 operates so as to open between the tips of the

nip claws

11 and 13 and the tips of the nip claws 12. Below, the space between the mounting plate 18 and the operation plate 22 by the hook 19 is locked. When the space between the mounting plate 18 and the operation plate 22 is locked by the hook 19, even if the mounting plate 18 continues to rise, the locked state continues and the gripping mechanism 10a remains open.

When the mounting plate 18 is raised, the cam recess 18c is positioned higher than the roller 27, the claw 26a of the swing claw 26 is disengaged from the notch 22b of the operation plate 22, and the lock of the operation plate 22 with respect to the support block 40 is released. Is done. When the lock of the operation plate 22 with respect to the support block 40 is released, the operation plate 22 is also raised in conjunction with the rise of the mounting plate 18. The distance between the mounting plate 18 and the operation plate 22 is maintained by the lock by the hook 19, and the gripping mechanism 10a is kept open. As the mounting plate 18 continues to rise, as shown in FIG. 1, when the tip of the short side of the hook 19 comes into contact with the lower contact portion 40 a of the support block 40, the operation plate 22 is locked to the mounting plate 18. The operating plate 22 is rapidly raised by the pulling force of the pulling spring 23 and the gap between the nip shaft 14 and the rod shaft 17 is reduced, so that the gripping mechanism 10a tries to close. However, the gripping mechanism 10a is not completely closed by the lock by the lock lever 30, and remains in the capturing stage where the gripping space 10c is left. The lock state of the gripping mechanism 10a continues until the mounting plate 18 is lowered and the tip of the long arm 30b of the lock lever 30 comes into contact with the contact portion 40b on the upper portion of the support block 40 as shown in FIG. . When the long arm 30b comes into contact with the contact part 40b, the gripping mechanism 10a is released from the locked state, and is completely closed.

Claims

When the knitting yarn crossing from the knitted fabric being knitted on the needle bed to the yarn feeder is moved upward from the lower side to the upper side of the tooth port when the yarn feeding port of the knitting yarn is moved to the outside of the tooth mouth with the flat knitting machine In the knitting yarn gripping apparatus of a flat knitting machine, which is provided with a gripping mechanism at the upper end that can be opened and captured and closed and gripped when descending after ascending, and a lifting mechanism is provided below the gripping mechanism.
A locking member that locks the gripping mechanism that descends after being raised in the middle of closing, and holds it in the capturing stage before gripping the knitting yarn;
A release mechanism that acts on the lock member when the gripping mechanism continues to descend after locking, releases the lock, and causes the gripping mechanism to grip the knitting yarn;
A knitting yarn gripping device for a flat knitting machine, comprising:
The lock member has two arms extending from a support portion supported so as to be able to swing and displace, and performs locking with one arm,
The knitting yarn gripping apparatus for a flat knitting machine according to claim 1, wherein the release mechanism is provided in the elevating mechanism and acts on the other arm of the lock member.
The gripping mechanism has three plate-like nip claws that are overlapped so that the base end side swings and displaces around a common swing axis,
The two outer nip claws are connected and swing-displaced in the same direction, and the inner nip pawl is swing-displaced in the opposite direction to the outer two nip claws. The inside nip claw tip side opens and closes,
The lock member is supported by the inner nip claw so as to be able to swing and displace, and the one arm acts on one of the two outer nip claws, and remains in the capturing stage. The knitting yarn gripping device for a flat knitting machine according to claim 2.
The outer nip claw and the inner nip claw are connected to a rod for forming a link mechanism for opening and closing,
4. The knitting yarn gripping apparatus for a flat knitting machine according to claim 3, wherein the support portion of the lock member is supported by a connecting portion of the rod to the inner nip claw so as to be able to swing and displace.