KR20080057235A - Yarn change device in knitting machine or the like - Google Patents

Abstract

A yarn change device for selecting any one out of a plurality of kinds of different yarn of different color or the like sequentially and feeding a selected yarn to the feeder of a knitting machine while piecing each time. The yarn change device for selecting a yarn at a location between a plurality of kinds of feeder packages of different color or the like and the feeder of a knitting machine and feeding the yarn to the feeder of the knitting machine while piecing the selected yarn and a yarn being knitted, comprises a suction means (28) for suction-holding a plurality of yarns collectively, and a clamp means (29) for clamping the plurality of yarns collectively at a location between the suction means and the feeder packages, wherein the clamp means comprises first and second clampers (29A, 29B) arranged at two positions along the thread handling area and operating selectively. Since two clampers are operated selectively, yarns other than a yarn used for knitting can be grasped surely when the yarn is changed.

Description

Yarn change device in knitting machines {YARN CHANGE DEVICE IN KNITTING MACHINE OR THE LIKE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying knitting yarn to a yarn feeding device in a knitting machine or the like, and more particularly, among the plurality of heterogeneous yarns of different colors and the like, one of which is sequentially selected, and each time, The present invention relates to a thread switching device in a knitting machine or the like for supplying a feeding machine.

As is well known, the tendency of decorative variability with the diversification of knitted fabrics is very remarkable. Therefore, in the improvement of the knitting machine, especially the technique regarding the yarn feeding to the yarn feeding device in the knitting machine, that is, in the previous stage of knitting the yarn feeding to the knitting machine, the colors are different according to the previously designed knitting pattern. Improvements in technology, such as selecting different threads sequentially, thread jointing, and automatically supplying the threaded thread to a knitting machine, are desired.

Conventionally, a thread selector and a thread joint are formed between a plurality of types of yarn yarn packages and knitting machines having different colors and the like, and the yarn selected by the thread selector is automatically threaded with the knitting yarn actually knitting. There has been proposed an apparatus for organizing colors and patterns. In such an apparatus, effective thread switching is performed by retaining thread ends of a plurality of types of packages, opening only one selected yarn, introducing it into a thread joint, and thread jointing between the knitting yarns during knitting. There was no device.

Patent Document 1: Japanese Unexamined Patent Publication No. 2004-27463 (Summary, FIGS. 1 to 6)

Patent Document 2: Japanese Patent Application No. 2005-25124 (Summary, FIGS. 1 to 3)

Challenges the invention seeks to solve

Therefore, in the yarn switching device in a knitting machine or the like as described above, the present invention opens a holding means for holding a plurality of thread ends of a plurality of types of packages, selects only a predetermined selection thread, and knits the knitting during knitting. It is possible to provide a thread switching device in a knitting machine or the like which enables to connect yarns and yarns and continuously feeds them to the knitting machine.

In particular, in knitting machines and the like, tension is applied to the yarn feeding side due to thread tension by a top spring or the like, or yarn weight from the yarn feeding package to the yarn holding means, and the yarn may come out once the yarn holding is released.

An object of the present invention is to provide a thread switching device which can reliably perform switching between selected yarns and yarns during knitting, and that can securely hold yarns other than the yarns used for knitting by the holding means.

Means to solve the problem

In order to achieve the above object, the present invention specifically describes a yarn between a plurality of types of yarn feeding packages having different colors and the like and a yarn feeding device in a knitting machine. A yarn switching device for feeding yarn to a yarn feeder of a knitting machine by connecting a knitting yarn, comprising: suction means for suction-holding a plurality of yarns in a batch, and clamp means for collectively clamping a plurality of yarns between the suction means and the yarn feed package. And a clamp means disposed at two places along the seal guide, and consisting of first and second clampers selectively operating to constitute a thread switching device in a knitting machine or the like.

In the present invention, the invention described in claim 2 is a seal switching device in a knitting machine or the like according to claim 1, wherein the first clamper in the clamp means is connected to the suction means, In the suction operation, the plurality of seals in the seal guide are collectively clamped.

In the present invention, the invention according to claim 3 is a thread switching device in the knitting machine according to claim 1 or 2, wherein the second clamper in the clamp means is usually a plurality of threads. Is made of a seal holding member which collectively clamps and which opens the clamp at the time of selection of the selection, and the first clamper is normally open before the opening of the seal holding member at the time of selection of the selection. And a thread pressing member which opens the thread pressing after the start of thread holding.

Effects of the Invention

A thread switching device in a knitting machine or the like according to the present invention includes suction means for collectively sucking and holding a plurality of yarns, and clamp means for collectively clamping a plurality of yarns between the yarn feeding package and the suction means. The means consists of the 1st and 2nd clampers which selectively operate, respectively arrange | positioned in two places along a thread guide. In that regard, it is possible to open the holding means for holding a plurality of thread ends of a plurality of types of packages, select only one predetermined yarn, and make it possible to thread the yarn with the knitting yarn during knitting, The yarn can be fed continuously, and the thread can be reliably clamped regardless of the tension applied to the yarn.

Best Mode for Carrying Out the Invention

EMBODIMENT OF THE INVENTION Hereinafter, the thread switching device in the knitting machine etc. which concern on this invention is demonstrated in detail based on the specific Example shown in drawing. The embodiment described below is of the structure which combined the yarn switching device with the flat knitting machine as shown in FIG.

1 is a schematic side view showing a flat knitting machine equipped with a thread switching device according to the present invention. The flat knitting machine shown in this figure is provided with the machine frame 40 and the yarn feeder 41 incorporated in this machine frame 40. As shown in FIG. For this machine frame 40, a thread selector 1 and a thread joint 2 are combined. In the vicinity of the machine frame 40, for example, eight types of knitting packages W1 to W8 are provided. Each of these knitting packages W1 to W8 is constituted by knitting yarns Y1 to Y8 of different colors. The machine frame 40 is provided with the needle bed 42 in which the plurality of knitting needles are freely moved forward and backward.

Moreover, the machine frame 40 is equipped with the carrier 43 and the carriage 44 which can be reciprocally moved, and the needle 43 of the needle bed 42 is moved forward and backward by the movement of the carriage 44, and the carrier 43 is carried out. Is entrained. The eight kinds of knitting yarns Y1 to Y8 wound on the knitting packages W1 to W8 are supplied to the yarn selecting device 1, and one of the eight kinds of knitting yarns Y1 to Y8 is selected by the yarn selecting device 1. Knitting yarn (hereinafter referred to as 'selective yarn') is yarn-bonded with yarn knitting (hereinafter, referred to as 'knit yarn') by the yarn joint device 2, and by the yarn feeding device 41. The knitted fabric 45 is conveyed to the carrier 43 and supplied to the needle bed 42 while being gripped by the carrier 43 to reciprocate. The knitting yarns Y1 to Y8 are supplied to the thread selector 1 via the top spring 46 for imparting tension. The color of the knitting yarns Y1 to Y8 during knitting is changed in accordance with the pattern of the knitting fabric 45 knitted by the yarn selecting device 1 and the yarn fitting device 2.

The yarn switching device in the knitting machine or the like according to the present invention basically selects a yarn between the plurality of yarn feeding packages W1 to W8 having different colors and the like, and the yarn feeding device 41 in the knitting machine. And a yarn joint device 2 for yarn-joining the yarn selected in the yarn selection unit 1 and the knitting yarn in knitting.

The thread switching device includes suction means 28 for sucking and holding a plurality of threads collectively, and clamp means 29 for collectively clamping a plurality of threads between the suction means 28 and the yarn feeding packages W1 to W8. The clamp means 29 is arrange | positioned in two places along a seal guide, and consists of the 1st clamper 29A and the 2nd clamper 29B which selectively operate | move mutually.

In the present invention, the first clamper 29A in the clamp means 29 interlocks with the suction means 28, and at the time of the suction operation of the suction means 28, the plurality of threads in the thread guide are clamped collectively. It is configured to

Moreover, in this invention, the 2nd clamper 29B in the clamp means 29 is normally comprised by the seal holding member 31 which clamps a plurality of threads collectively, and opens a clamp at the time of selection of a selection. The first clamper normally opens the clamp, and at the time of selection of the selection, the thread pressing member 30 presses the thread before opening the thread holding member 31 and opens the thread pressing after the thread holding starts. It consists of.

Fig. 2 is a schematic perspective view showing an enlarged seal selector 1, a thread joint 2, and the like. The thread selector 1 is provided with eight thread selector plates G1 to G8 at the top. Each thread selection plate G1-G8 is equipped with the thread insertion ring g in the lower part. The knitting yarns Y1 to Y8 from the knitting packages W1 to W8 are inserted into the thread insertion rings g of the thread selection plates G1 to G8, and one of them is transferred to the yarn feeding device 41. This thread insertion ring g is formed in an annular shape, and is comprised so that knitting yarns Y1-Y8 may be inserted in this annular part. And when changing the kind of knitting yarn, as shown by the dashed-dotted line in FIG. 2, the yarn selection boards G1-G8 which hold the knitting object to be changed are moved inward, and the knitting yarn is positioned at the selection position. . These operations will be described in detail later.

The yarn selector 1 includes a separator 12 for dividing and knitting a knitting yarn and a knitting yarn other than that. In addition, the thread selection device 1 is provided with a thread guide lever 10 for guiding the knitting yarn at the above-described selection position to the thread joint position. FIG. 3 is a schematic perspective view showing the details of the main parts of the thread selector 1, and FIG. 4 is a schematic perspective view showing the details of the main parts of the thread fitting 2.

As shown in FIGS. 2 and 3, the thread selector 1 is provided with a thread pressing member 30, a thread holding member 31, and a thread tip holding suction 32 in the vicinity of the separator 12. have. As shown in FIG. 2 and FIG. 3, the thread pressing member 30 is configured to move forward and backward by the thread pressing cylinder 33, and is normally retracted, and the separator 12 and the thread pressing cylinder 33 are used. The seal guide between the acting end 33a in () is opened, and the thread is placed between the separator 12 and the acting end 33a in the thread pressing cylinder 33 during the forward operation. Clamp all together.

On the other hand, the seal holding member 31 is configured to move forward and backward by the seal holding cylinder 34, and is normally advanced, and has an operating end in the separator 12 and the seal holding cylinder 34 ( The seal is collectively clamped between 34a), and retracted when the yarn is switched to open the seal guide between the separator 12 and the working end 34a of the seal holding cylinder 34. have.

Below the thread selector 1, a thread joint 2 is combined. As shown in Figs. 2 and 4, the thread joint device 2 is a structure in which two yarns are thread-joined in a state in which their thread ends are aligned in the same direction, and the thread joints are ejected by a spray of compressed air. Splice-type seal joints. This thread joint device 2 comprises a splice nozzle 21. The splice nozzle 21 described above is provided with a thread receiving hole 21a for accommodating two threads in a state where the thread end portions of the two threads to be threaded are aligned in the same direction. Moreover, this splice nozzle 21 is provided with the air blowing means 26 which has the nozzle opening 21b which blows out airflows, such as compressed air, from the direction which intersects with the seal accommodation hole 21a, and this air The blowing means 26 is provided with a solenoid valve 27. The blowing of air is controlled by the opening and closing control of the solenoid valve 27.

In addition, the thread joint device 2 includes a disc guide 20 for guiding two knitting yarns to a thread joint position, a cutter 23 for adjusting the length of each knitting yarn, and a thread joint for decoupling each knitting yarn. A splice nozzle 21 and the like. The thread joint device 2 is configured to operate by the drive motor 50. Below the thread joint device 2, the thread position determination part 35 for determining the position of a knitting yarn and conveying it to the feed yarn 41 is provided. This thread positioning part 35 has a slit-shaped notch, and is knitting by positioning the notch.

Fig. 5 is a view showing a seal guide lever, Fig. 5A is a schematic front view thereof, Fig. 5B is a schematic right side view seen from the right side of Fig. 5A, and Fig. 5C is a sectional view taken along the line I-I in Fig. 5B. As shown in FIG. 5A, the seal guide lever 10 has a main body portion 105 that is generally formed in an arc shape. The thread guide lever 10 has a first engaging portion 101 for engaging the selected yarn at one end. As shown in FIG. 5B, the first coupling portion 101 is formed by cutting (notching) into a V shape. The thread guide lever 10 is provided with the rotating shaft 107 at the other end, and is comprised so that rotation is possible in the arrow direction n centering around this rotating shaft 107. As shown in FIG. Moreover, the thread guide lever 10 is equipped with the 2nd engaging part 102 for engaging a knitting yarn in the center substantially. As shown in FIG. 5B, this second coupling portion 102 protrudes from the main body portion 105. As shown in FIG. 5C, a pair of wall portions 106, 106 'are provided on both sides of the main body portion 105, and the portion 105, 106, 106' is formed with a U-shaped thread regulating portion 103. As shown in FIG. Therefore, this thread regulating part 103 is formed as a U-shaped thread regulating part 103 opened in the outward direction almost over the outer periphery of the thread guide lever 10. By arrange | positioning the selection yarn inside the thread control part 103, it can guide to the thread joint position, restricting the knitting yarn to a specific position.

Next, the operation of changing the type of knitting yarn in knitting will be described in detail with the operation steps shown in FIGS. 6 to 9. 6 to 9 are diagrams for explaining the operation of the thread selector and the like, and the thread selector is shown in the steps shown in FIGS. 6A, 6B, 7A, 7B, 8A, 8B, 9A, and 9B. Therefore, the operation is performed in the first to eighth steps. A-1 and B-1 in each figure are schematic front views, and A-2 and B-2 in each figure are schematic left side views corresponding to A-1 and B-1, respectively. 10 is a diagram for explaining an operation step of the actual joint device. 11 is a perspective view showing a part of a device including a disc guide.

In the first step of the yarn selection device 1, as shown in Figs. 6A-1 and 6A-2, eight knitting yarns Y1 to Y8 are held in the eight yarn selection plates G1 to G8. have. And knitting yarn Y4 (shown by the dashed-dotted line) is arrange | positioned inside the separator 12 (left side of the figure of FIG. 6A-2). In addition, seven knitting yarns Y1 to Y3 and Y5 to Y8 other than the knitting yarn Y4 are disposed outside the separator 12 (the right side in the drawing in Figs. 6A-2) and clamped by the seal holding member 31. Reserved. The seal holding member 31 is provided with an air solenoid for controlling the air flow rate. It is configured to hold and open the knitting yarn by the operation of the piston cylinder by the air solenoid. In this state, knitted yarn Y4 is conveyed from the upper side to the lower side, and is fed and passed through the front surface of splice nozzle 21.

Then, the thread switching signal based on the knitted fabric pattern input in advance is sent from the control unit (not shown) provided in the flat knitting machine to the thread selecting device 1, the thread jointing device 2, the yarn feeding device 41, and the like. . By this signal, the yarn feeding device 41 stops, the movement of the knitting yarn Y4 is stopped, and the yarn selecting device 1, the yarn joint device 2, and the like operate. In the second step, as shown in Figs. 6B-1 and 6B-2, the actual selection plate G1 holding the selection yarn Y1 (denoted by a dashed line) to be subjected to the type change is driven. . By the real selection plate G1 moving inward, the selection yarn Y1 is positioned at the selection position Pl. After that, the thread guide lever 10 rotates (forward rotation) in the direction of the arrow III.

Subsequently, in the third step, as shown in Figs. 7A-1 and 7A-2, the first engaging portion 101 of the thread guide lever 10 is moved to the selected position by the rotation of the thread guide lever 10. Engage the selection Y1 in Pl). The selection yarn Y1 is disposed in the thread restricting section 103 of the thread guide lever 10, and is guided downward in the state regulated at the specific position P2. The second engaging portion 102 of the seal guide lever 10 protrudes from the separator 12 and moves along the arcuate upper edge portion 12a of the separator 12. 7A-1 shows the state at the moment when the second engaging portion 102 is engaged in contact with the knitting yarn Y4. In this state, a part of the selection yarn Y1 and the knitting yarn Y4 are located inside the separator 12.

In addition, in the fourth step, as shown in FIGS. 7B-1 and 7B-2, the seal guide lever 10 further rotates, and the first engaging portion 101 is lower than the splice nozzle 21. Is placed in position. Therefore, the selection yarn Y1 is guided while sliding in engagement with the first engagement portion 101. In addition, the selection yarn Y1 is guided while sliding the thread restricting portion 103 in a state of being regulated at a specific position P2 at the thread restricting portion 103 of the thread guide lever 10, and the splice nozzle 21. Is guided to the front of the. In this manner, the guide yarn Y1 is guided while regulating the yarn Y1 to the specific position P2 of the real regulator 103 so that the yarn Y1 is intertwined with the knitting yarn Y4 and the other yarns Y2 and Y3. It can move to the front surface of the splice nozzle 21, without raising.

And as mentioned above, in the state shown to FIG. 7A-1 and FIG. 7A-2, the 2nd engagement part 102 is contacting and engaging the knitting yarn Y4, and from this state, the thread guide lever 10 was carried out. Rotates further (see FIGS. 7B-1 and 7B-2). Accordingly, the knitting yarn Y4 is engaged with and guided to the second coupling portion 102 and moves outward from the inside of the separator 12. That is, the knitting yarn Y4 moves to the standby position P3 in which knitting yarns Y1 to Y3 and Y5 to Y8 (knit yarns other than knitting) are waiting.

Subsequently, in the fifth step, as shown in Figs. 8A-1 and 8A-2, the thread pressing member 30 is driven, and knitting yarns Y2 to Y8 other than the selection yarn Y1 inside the separator 12 are driven. ). Thereafter, before the thread holding member 31 is driven to open the thread tip, suction of the thread tip holding suction 32 is started. As a result, the thread tip holding suction 32 sucks and grips the thread tips of the knitting yarns Y1 to Y3 and Y5 to Y8. The seal pressing member 30 is configured to hold and open the knitting yarn by the operation of the piston cylinder by the air solenoid. As the suction force of the thread tip holding suction 32 is a tension added by the repulsive force of the top spring 46 provided in the horizontal knitting machine, as shown in FIG. 1, the thread ends of the knitting yarns Y2 to Y8 cannot be reliably held. , The thread pressing member 30 is provided.

In the sixth step, as shown in Figs. 8B-1 and 8B-2, the yarn Y1 in which the thread inserting portion 20a provided in the disc guide 20 is guided to the front surface of the splice nozzle 21 and The knitting yarn Y4 is pushed into the thread receiving hole 21a of the splice nozzle 21, and is inserted. Thereby, the selection yarn Y1 and the knitting yarn Y4 are arranged at the thread joint position P4.

As shown in FIG. 11, the 1st drive gear 51 and the 2nd drive gear 52 rotate by the drive of rotation of the drive motor 50. As shown in FIG. The first drive gear 51 is connected to a link mechanism (not shown) for performing a series of operations of the thread joint device 2 described later. The second drive gear 52 drives the disc guide 20. The second drive gear 52 meshes the first driven gear 53 and the second driven gear 54 to rotationally drive the disc guide 20 formed on the second driven gear 54. Part of the disc guide 20 is cut out (notched), and a lock-shaped thread inserting portion 20a is provided on one side of the notched portion. And when the disc guide 20 rotates to arrow direction IV, the selection yarn Y1 and the knitting yarn Y4 move in the state engaged with the thread insertion part 20a, and the splice nozzle 21 Is pushed into the thread receiving hole 21a.

At the same time, the actual joint device 2 operates as shown in FIG. The thread joint device 2 is an air splicer which is thread-jointed by jet of compressed air, and has a splice nozzle 21. The splice nozzle 21 is provided with the thread accommodating hole 21a which accommodates two knitting yarns. Moreover, this splice nozzle 21 is provided with the air blowing means 26 which blows out compressed air with respect to the seal accommodation hole 21a. And the nozzle opening 21b is provided in the direction which cross | intersects the seal accommodation hole 21a from this air blowing means 26. As shown in FIG. The air blowing means 26 is configured to control the blowing of air by opening and closing the solenoid valve 27.

One side of the splice nozzle 21 is provided with the clamp means 22 for holding two knitting yarns accommodated in the yarn receiving hole 21a and arranged in the thread joint position P4, and the other side has two knitting yarns. The cutter 23 which cuts an end side and adjusts a length is provided. Moreover, one side of the splice nozzle 21 is provided with the nozzle cover 24 which closes one side of the thread accommodating hole 21a, and the thread extraction lever 25 for adjusting and pulling out a thread joint length.

The splice nozzle 21, the clamping means 22, the cutter 23, the nozzle cover 24 and the seal take-out lever 25 are connected by a link mechanism (not shown) connected to the first drive gear 51, It is configured to drive in series.

As shown in Fig. 10A, the selective yarn Y1 and the knitting yarn Y4 are sucked and grasped by the thread end holding suction 32 in a state where the thread ends coincide in the same direction, and the thread receiving hole of the splice nozzle 21 is shown. It is inserted in 21a, and it is located in the real joint position P4. As shown in Fig. 10B, the selective yarn Y1 and the knitted yarn Y4 are gripped by the clamp means 22, and the nozzle cover 24 and the thread take-out lever 25 open the thread accommodating hole 21a. Move to the location of abolition. As shown in FIG. 10C, the cutter 23 operates to cut the thread end sides of the selection yarn Y1 and the knitting yarn Y4 to a predetermined length. The end of thread remaining with the selected yarn Y1 is sucked by the thread end holding suction 32.

Thereafter, as shown in FIG. 10D, the thread takeout lever 25 slightly moves in the direction of the arrow V to adjust the joint lengths of the selection yarn Y1 and the knitting yarn Y4. In the state shown in FIG. 10D, the air blowing means 26 is operated to spray compressed air to the selection yarn Y1 and the knitting yarn Y4 through the nozzle opening 21b to decompose the yarn tip portion of each knitting yarn. (See Figure 10E). In the state of FIG. 10E, the thread takeout lever 25 is further moved in the direction of the arrow V, and the selective yarn Y1 and the knitted yarn Y4 are pulled out of the yarn receiving hole 21a. (See Figure 10F). When the distal end of the disassembled portion passes near the ejection opening of the compressed air of the thread receiving hole 21a, the fibers are entangled and the optional yarn Y1 and the knitted yarn Y4 are threaded together. When the entangled part is drawn out from the thread accommodating hole 21a, the selective yarn Y1 and the knitted yarn Y4 are taken out while pressing with the nozzle cover 24, thereby preventing the entangled portion from being broken and the joint part is knotted. It is difficult to make up of images.

Then, as shown in Fig. 10G, after the selection yarn Y1 and the knitting yarn Y4 are completely pulled out of the thread receiving hole 21a, the clamp means 22 is opened, and the cutter 23 and the nozzle cover ( 24) and the thread take-out lever 25 return to their original positions to complete the thread joining.

After that, in the seventh step, the yarn selector 1 has knitting yarns Y2 to Y8 other than the selection yarn Y1, as shown in Figs. 9A-1 and 9A-2. G)). The thread pressing member 30 opens the knitting yarns Y2 to Y8, and at the same time, the suction of the thread end holding suction 32 stops. In the eighth step, as shown in Figs. 9B-1 and 9B-2, the thread guide lever 10 is rotated to its original state (reverse rotation). Thereafter, with the yarn selection plate G1 returning to its original position and the selection yarn Y1 disposed inside the separator 12, the feeding machine 41 operates, and the selection yarn Y1 is transferred. And the yarn is fed into a flat knitting machine.

12 is a time chart diagram showing an operation state of the main member described above. As shown in FIG. 12, after the seal guide lever 10 rotates forward, the drive motor 50 rotates one rotation (0 ° to 360 °). By one rotation of the drive motor 50, the disc guide 20 rotates once, while the clamp means 22, the cutter 23, the nozzle cover 24, the thread take-off lever 25, and the like are driven. And a series of operation | movement from the start of a real joint to completion is comprised.

As shown in FIG. 7, in this embodiment, the first engaging portion 101 first engages the selection yarn Y1 at the selected position P1, and later the second engaging portion 102 is the knitted yarn Y4. ), The knitting yarn Y4 is moved from the inside of the separator 12 to the outside.

However, as shown in the angle of FIG. 13 (it shows the state corresponding to the angle of FIG. 7, for example), when the knitting yarn is knitting yarn Y1 and the selection yarn is knitting yarn Y4, the 2nd coupling part ( 102 does not engage knitting yarn Y1, and select yarn Y4 engages knitting yarn Y1 and moves from inside of separator 12 to outside. That is, as shown to FIG. 13A-1 and FIG. 13A-2, the selection yarn Y4 rotates in the state which engaged the selection yarn Y4 by the 1st coupling part 101, and the selection yarn Y4 of the separator 12 is carried out. It moves in the state which crossed from the outside to the inside. Thereby, the knitting yarn Y1 intersects and engages with the selection yarn Y4 before the 2nd engagement part 102 engages. In this state, the yarn guide lever 10 further rotates, so that the selected yarn Y4 causes the knitted yarn Y1 to move inside the separator 12 as shown in FIGS. 13B-1 and 13B-2. Move outwards.

That is, when the selection yarn is engaged with the first engagement portion 101 and crosses the knitting yarn, instead of the second engagement portion 102, the selection yarn engages the knitting yarn and moves to the standby position P3. On the other hand, after the selection yarns are engaged with the first engagement portion 101 and do not intersect the knitting yarns, the second engagement portions 102 engage the knitting yarns and move to the standby position P3.

Although the flat knitting machine has been described in the above embodiment, the thread switching device according to the present invention can also be mounted in a textile machine such as an automatic winder for threading selected yarns from a plurality of types of yarns.

1 is a schematic side view showing an embodiment of a flat knitting machine equipped with a thread switching device according to the present invention.

2 is a schematic perspective view showing a specific configuration example of a thread switching device in a knitting machine or the like according to the present invention.

3 is a schematic perspective view showing details of main parts of a thread selection device;

4 is a schematic perspective view showing details of main parts of a thread joint.

Fig. 5 is a view showing a seal guide lever, Fig. 5A is a schematic front view thereof, Fig. 5B is a right side view of Fig. 5A, and Fig. 5C is a sectional view taken along the line I-I of Fig. 5B.

6 to 9 are diagrams for explaining the operation step steps of the thread selection in the thread switching device according to the present invention. FIGS. 6A-1 and 6A-2 are front and side views showing the first step, 6B-1 and 6B-2 are front and side views showing the second step.

7A-1 and 7A-2 are front and side views showing the third step, and FIGS. 7B-1 and 7B-2 are front and side views showing the fourth step.

8A-1 and 8A-2 are front and side views showing the fifth step, and FIGS. 8B-1 and 8B-2 are front and side views showing the sixth step.

9A-1 and 9A-2 are front and side views showing the seventh step, and FIGS. 9B-1 and 9B-2 are front and side views showing the eighth step.

10A to 10G are side cross-sectional views of the thread joint apparatus for explaining the operation steps of the thread joint apparatus.

11 is a perspective view showing a part of a device including a thread insertion rotary plate.

12 is a time chart diagram showing an operation state of the actual switching device.

FIG. 13 is an explanatory diagram illustrating a special example of a state corresponding to the angle of FIG. 7.

Explanation of the sign

One; Thread selector 2; Thread fittings

10; Thread guidance lever 12; Separator

20; Disc guide 21; Splice nozzle

21a; Thread receiving hole 21b; Nozzle opening

26; Air blowing means 27; Solenoid valve

28; Suction means 29; Clamping means

29A; First clamper 29B; 2nd clamper

30; Thread pressing member 31; Thread holding member

32; Thread end grip 33; Thread Pressing Cylinder

34; Seal holding cylinder Pl; Position

P2; Specific position P3; Standby position

P4; Thread joint position Y1; Optional

Y4; Organizer

Claims (3)

As a yarn switching device that selects a yarn between a plurality of yarn feeding packages having different colors and the like and a yarn feeding device in the knitting machine, and yarns the selected yarn and the knitting yarn in the knitting to yarn the yarn feeding device of the knitting machine. , Suction means for collectively sucking and holding a plurality of threads, and clamp means for collectively clamping a plurality of threads between the suction means and the yarn feeding package, the clamp means being disposed at two places along the thread guide; And a first and second clamper selectively operating. The method of claim 1, The first clamper in the clamp means interlocks with the suction means, and at the time of the suction operation of the suction means, a plurality of threads in the thread guide are clamped collectively. Device. The method according to claim 1 or 2, The second clamper in the clamp means usually consists of a seal holding member which clamps a plurality of seals collectively, and opens the clamp upon selection of the selection, and the first clamper normally opens the clamp. And a yarn pressing member for pressing the yarn before opening the yarn holding member and opening the yarn pressing after the yarn holding starts at the time of selection of the selection yarn.

Images