JPWO2007043335A1 - Yarn switching device in knitting machine - Google Patents

Abstract

A yarn switching device that sequentially selects one of a plurality of different types of yarns having different colors and the like and supplies them to the yarn feeder of the knitting machine each time while piecing. A yarn is selected between a plurality of types of yarn feeding packages having different colors and the yarn feeding device in the knitting machine, and the selected selected yarn and the knitting yarn being knitted are spliced to supply the yarn in the knitting machine. A yarn switching device for supplying yarn to a device, wherein a suction means (28) for collectively sucking and holding a plurality of yarns, and a clamp for collectively clamping a plurality of yarns between the suction means and the yarn supply package Means (29), and the clamping means comprises a first clamper (29A) and a second clamper (29B) which are arranged at two locations along the yarn path and are selectively operated. By selectively operating the two clampers, a yarn other than the yarn used for knitting can be reliably gripped when the yarn is switched.

Description

  The present invention relates to a device for supplying a knitting yarn to a yarn feeding device in a knitting machine or the like, and in particular, selects one of a plurality of different types of different yarns having different colors, etc. The present invention relates to a yarn switching device in a knitting machine or the like that is supplied to a yarn feeding device of a knitting machine while piecing each time.

  As is well known, the tendency of decorative changeability with the increase in the number of knitted products is extremely remarkable, and therefore, improvement of the knitting machine, in particular, improvement of the technology related to yarn feeding to the yarn feeding device in the knitting machine, That is, before supplying the knitting yarn to the knitting machine, yarns of different colors are sequentially selected and spliced according to a pre-designed knitted fabric pattern, and the spliced yarn is automatically supplied to the knitting machine. Therefore, there is a demand for improved technology.

  Conventionally, a yarn selection device and a yarn splicing device have been provided between a plurality of types of yarn supply packages of different colors and the knitting machine, and the selected yarn selected by the yarn selection device is automatically combined with the knitting yarn currently being knitted. An apparatus for knitting a desired color / pattern by tying the yarns is proposed. In such a device, the yarn ends of a plurality of types of packages are held, only one selected yarn is released, and this is introduced into the yarn splicing device, so that There was no effective thread switching device for splicing between them.

Japanese Unexamined Patent Publication No. 2004-27463 (summary, FIGS. 1 to 6) Japanese Patent Application No. 2005-25124 (Summary, FIGS. 1 to 3)

Accordingly, the present invention provides a yarn switching device for a knitting machine or the like as described above, by opening the holding means for holding a plurality of yarn ends of a plurality of types of packages, and selecting only a predetermined selected yarn. It is possible to provide a yarn switching device in a knitting machine or the like in which the knitting yarn can be spliced with the knitting yarn being knitted and continuously fed to the knitting machine.
In particular, in a knitting machine or the like, there is a case where tension is applied to the yarn feeding side due to yarn tension by a top spring or the like, or yarn self-weight from the yarn feeding package to the yarn holding means, and the yarn may slip through once the yarn holding is released. .
An object of the present invention is to provide a yarn switching device that can reliably switch between a selected yarn and a yarn being knitted, and can reliably hold a yarn other than a yarn used for knitting by a holding means. To do.

  In order to achieve the above object, the present invention specifically selects a yarn between a plurality of types of yarn supply packages having different colors and the like and a yarn supply device in the knitting machine, and the selected selection yarn A yarn switching device that joins the knitting yarn being knitted to the yarn feeding device of the knitting machine, and sucking means for sucking and holding a plurality of yarns at once, suction means and a yarn feeding package; A clamp means for clamping a plurality of yarns at once, the clamp means being arranged at two locations along the yarn path and comprising first and second clampers that are selectively operated It constitutes a yarn switching device in a characteristic knitting machine or the like.

  Further, in this invention, the invention described in claim 2 is a yarn switching device in the knitting machine or the like described in claim 1, wherein the first clamper in the clamping means is linked to the suction means to A plurality of yarns on the yarn path are collectively clamped during the suction operation.

  Furthermore, in the present invention, the invention according to claim 3 is a yarn switching device in the knitting machine or the like according to claim 1 or 2, wherein the second clamper in the clamping means is usually a plurality of yarns. Is a thread holding member that releases the clamp when the selected thread is selected, and the first clamper normally releases the clamp and opens the thread holding member when selecting the selected thread. It is characterized by comprising a thread presser member that presses the thread forward and releases the thread presser after the start of thread holding.

  A yarn switching device in a knitting machine or the like according to the present invention includes a suction unit that collectively sucks and holds a plurality of yarns, and a clamp unit that collectively clamps a plurality of yarns between a yarn supply package and the suction unit. The clamp means is configured by first and second clampers that are selectively operated and arranged at two locations along the yarn path, and in that respect, a plurality of yarn ends of a plurality of types of packages. The holding means for holding the knitting machine is opened so that only a predetermined selected yarn can be selected and spliced with the knitting yarn being knitted, and this is continuously fed to the knitting machine. The yarn can be threaded, and the yarn can be reliably clamped regardless of the tension acting on the yarn.

1 is a schematic side view showing an embodiment of a flat knitting machine equipped with a yarn switching device according to the present invention. It is a schematic perspective view which shows the specific structural example of the thread | yarn switching device in the knitting machine etc. which concern on this invention. It is a schematic perspective view which shows the detail of the principal part of a thread | yarn selection apparatus. It is a schematic perspective view which shows the detail of the principal part of a yarn splicing apparatus. 5A is a schematic front view of the yarn guide lever, FIG. 5B is a right side view of FIG. 5A, and FIG. 5C is a cross-sectional view taken along the line II in FIG. 5B. FIGS. 6 to 9 are diagrams for explaining a thread selection operability procedure in the thread switching device according to the present invention. FIGS. 6A-1 and 6A-2 are a front view and a first stage, respectively. FIG. 6B-1 and FIG. 6B-2 are a front view and a side view showing the second stage. 7A-1 and 7A-2 are a front view and a side view showing the third stage, and FIGS. 7B-1 and 7B-2 are a front view and a side view showing the fourth stage. 8A-1 and 8A-2 are a front view and a side view showing the fifth stage, and FIGS. 8B-1 and 8B-2 are a front view and a side view showing the sixth stage. 9A-1 and 9A-2 are a front view and a side view showing the seventh stage, and FIGS. 9B-1 and 9B-2 are a front view and a side view showing the eighth stage. 10A to 10G are side sectional views of the yarn splicing device for explaining the operation procedure of the yarn splicing device. It is a perspective view which shows the one part apparatus containing a thread | yarn insertion rotation board. It is a time chart which shows the operation state of a thread | yarn switching device. 7 is an explanatory diagram for explaining another example of the state corresponding to each diagram.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thread selection apparatus 2 Yarn splicing apparatus 10 Thread guide lever 12 Separator 20 Disc guide 21 Splice nozzle 21a Thread accommodation hole 21b Nozzle opening 26 Air ejection means 27 Electromagnetic valve 28 Suction means 29 Clamp means 29A First clamper 29B Second clamper 29B Clamper 30 Thread holding member 31 Thread holding member 32 Thread end gripping suction 33 Thread holding cylinder 34 Thread holding cylinder P1 Selected position P2 Specific position P3 Standby position P4 Yarn splicing position Y1 Selected thread Y4 Knitting yarn

  Hereinafter, a yarn switching device in a knitting machine or the like according to the present invention will be described in detail based on specific embodiments shown in the drawings. In the embodiment described below, the yarn switching device is incorporated in a flat knitting machine as shown in FIG.

  FIG. 1 is a schematic side view showing a flat knitting machine equipped with a yarn switching device according to the present invention. The flat knitting machine shown in this figure includes a machine base 40 and a yarn feeding device 41 incorporated in the machine base 40. The yarn selecting device 1 and the yarn splicer are connected to the machine base 40. The device 2 is combined. Near the machine base 40, for example, eight types of knitting yarn packages W1 to W8 are provided. Each of these knitting yarn packages W1 to W8 is composed of knitting yarns Y1 to Y8 of different colors. The machine base 40 comprises a needle bed 42 in which a plurality of knitting needles are juxtaposed in a freely movable manner.

  Further, the machine base 40 includes a carrier 43 and a carriage 44 that can reciprocate. As the carriage 44 moves, the knitting needles of the needle bed 42 are advanced and retracted, and the carrier 43 is entrained. Eight types of knitting yarns Y1 to Y8 wound around the knitting yarn packages W1 to W8 are supplied to the yarn selection device 1, and one of the eight types of knitting yarns Y1 to Y8 is selected by the yarn selection device 1. A knitting yarn (hereinafter referred to as a selected yarn) is spliced with a knitting yarn (hereinafter referred to as a knitting yarn) being knitted by the yarn splicing device 2, and sent to the carrier 43 by the yarn feeding device 41. The knitted fabric 45 is knitted by being fed to the needle bed 42 while being reciprocated by being gripped by the carrier 43. The knitting yarns Y1 to Y8 are supplied to the yarn selecting device 1 through a top spring 46 for applying tension. Then, the yarn selecting device 1 and the yarn splicing device 2 change the colors of the knitting yarns Y1 to Y8 being knitted according to the pattern of the knitted fabric 45 to be knitted.

  The yarn switching device in the knitting machine or the like according to the present invention is basically a yarn for selecting a yarn between a plurality of types of yarn feeding packages W1 to W8 having different colors and the yarn feeding device 41 in the knitting machine. It comprises a selection device 1 and a yarn splicing device 2 for splicing the selected yarn selected by the yarn selection device 1 and the knitting yarn being knitted.

  The yarn switching device includes a suction unit 28 that collectively sucks and holds a plurality of yarns, and a clamp unit 29 that collectively clamps a plurality of yarns between the suction unit 28 and the yarn supply packages W1 to W8. The clamp means 29 includes a first clamper 29A and a second clamper 29B which are arranged at two locations along the yarn path and which selectively operate with respect to each other.

  In the present invention, the first clamper 29A in the clamping means 29 is configured so as to collectively clamp a plurality of yarns on the yarn path during the suction operation of the suction means 28 in conjunction with the suction means 28. is there.

  Furthermore, in the present invention, the second clamper 29B in the clamping means 29 is usually constituted by a thread holding member 31 that collectively clamps a plurality of threads and opens the clamp when a selected thread is selected. The first clamper is normally configured by a thread presser member 30 that opens the clamp, presses the thread before opening the thread holding member 31 and releases the thread presser after starting the thread holding when selecting the selected thread. It is what has been.

  FIG. 2 is a schematic perspective view showing the yarn selection device 1 and the yarn splicing device 2 in an enlarged manner. The yarn selection device 1 includes eight yarn selection plates G1 to G8 at the top. Each of the thread selection plates G1 to G8 includes a thread insertion ring g at the lower part. The knitting yarns Y1 to Y8 from the knitting yarn packages W1 to W8 are inserted into the yarn insertion ring g of the yarn selection plates G1 to G8, and one of the knitting yarns is sent to the yarn feeder 41. The yarn insertion ring g is formed in an annular shape, and is configured such that the knitting yarns Y1 to Y8 are inserted through the annular portion. When the type of knitting yarn is changed, as shown by a two-dot chain line in FIG. 2, the yarn selection plates G1 to G8 holding the knitting yarn to be changed are moved inward to position the knitting yarn at the selected position. To do. These operations will be described in detail later.

  The yarn selection device 1 includes a separator 12 for separately arranging a knitting yarn and other knitting yarns. Further, the yarn selection device 1 includes a yarn guide lever 10 for guiding the knitting yarn at the selected position to the yarn splicing position. FIG. 3 is a schematic perspective view showing details of a main part of the yarn selection device 1, and FIG. 4 is a schematic perspective view showing details of a main part of the yarn splicing device 2.

  As shown in FIGS. 2 and 3, the thread selecting device 1 is provided with a thread presser member 30, a thread holding member 31, and a thread end gripping suction 32 in the vicinity of the separator 12. As shown in FIGS. 2 and 3, the thread presser member 30 is configured to advance and retract by a thread presser cylinder 33, and is normally retracted, and the working end of the separator 12 and the thread presser cylinder 33. A yarn path between the separator 33 and the working end 33a of the thread presser cylinder 33 is collectively clamped during forward operation.

  On the other hand, the yarn holding member 31 is configured to advance and retreat by the yarn holding cylinder 34, and is normally moved forward between the separator 12 and the working end 34a of the yarn holding cylinder 34. The yarn is clamped collectively, and is retracted at the time of yarn switching to open the yarn path between the separator 12 and the working end 34a of the yarn holding cylinder 34.

  A yarn splicing device 2 is combined below the yarn selection device 1. As shown in FIGS. 2 and 4, the yarn splicing device 2 is configured to splice two knitting yarns with their yarn end portions aligned in the same direction. This is a splicer type yarn splicing device that performs yarn splicing by spraying and blowing. The yarn splicing device 2 includes a splice nozzle 21. The splice nozzle 21 described above includes a yarn accommodation hole 21a that accommodates two yarns with the yarn end portions of the two yarns to be spliced aligned in the same direction. Further, the splice nozzle 21 is provided with an air ejecting means 26 having a nozzle opening 21b for ejecting an air flow such as compressed air from the direction intersecting the yarn accommodating hole 21a. The air ejecting means 26 is an electromagnetic valve. 27, and controls the ejection of air by opening / closing control of the electromagnetic valve 27.

  Further, the yarn splicing device 2 is a disk guide 20 for guiding two knitting yarns to the yarn splicing position, a cutter 23 for adjusting the length of each knitting yarn, and untwisting each knitting yarn to splicing the yarn. A splice nozzle 21 and the like are provided. The yarn splicing device 2 is configured to operate by a drive motor 50. A yarn positioning portion 35 for determining the position of the knitting yarn and sending it to the yarn supplying device 41 is provided below the yarn splicing device 2. The yarn positioning portion 35 has a slit-like notch, and the knitting yarn is hooked on the notch for positioning.

  5A and 5B are diagrams illustrating the yarn guide lever, in which FIG. 5A is a schematic front view thereof, FIG. 5B is a schematic right side view viewed from the right side of FIG. 5A, and FIG. These are the II sectional view taken on the line in FIG. 5B. As shown in FIG. 5A, the yarn guide lever 10 has a main body portion 105 that is generally formed in an arc shape. The yarn guide lever 10 includes a first engagement portion 101 for engaging a selected yarn at one end. As shown in FIG. 5B, the first engagement portion 101 is formed in a V shape. The yarn guide lever 10 includes a rotating shaft 107 at the other end, and is configured to be rotatable in the arrow direction II around the rotating shaft 107. Further, the yarn guide lever 10 includes a second engagement portion 102 for engaging the knitting yarn at a substantially central position. As shown in FIG. 5B, the second engagement 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 a U-shaped yarn regulating portion 103 is formed by each portion 105, 106, 106 ′. Accordingly, the yarn restricting portion 103 is formed as a U-shaped yarn restricting portion 103 that is opened outward over substantially the entire outer periphery of the yarn guide lever 10. By arranging the selected yarn inside the yarn restricting portion 103, the knitting yarn can be guided to the splicing position while being restricted to a specific position.

  Next, the operation of changing the type of knitting yarn during knitting will be described in detail along the operation procedure shown in FIGS. 6 to 9 are diagrams for explaining the operation of the thread selecting device and the like. The thread selecting device is illustrated in FIGS. 6A, 6B, 7A, 7B, 8A, 8B, 9A, 9B operates in the first to eighth stages according to the procedure shown in FIG. 9B. A-1 and B-1 in each figure are schematic front views, and A-2 and B- in each figure. 2 is a schematic left side view corresponding to A-1 and B-1. FIG. 10 is a diagram for explaining an operation procedure of the yarn splicing device. FIG. 11 is a perspective view showing a part of the apparatus including the disk guide.

  In the first stage of the yarn selecting device 1, as shown in FIGS. 6A-1 and 6A-2, eight knitting yarns Y1 to Y8 are held by eight yarn selecting plates G1 to G8. Then, the knitting yarn Y4 (shown by a two-dot chain line) is arranged inside the separator 12 (the left side in FIG. 6A-2). Further, seven knitting yarns Y1 to Y3 and Y5 to Y8 other than the knitting yarn Y4 are arranged outside the separator 12 (right side in FIG. 6A-2), and are clamped and held by the yarn holding member 31. ing. The yarn holding member 31 includes an air solenoid that controls the air flow rate, and is configured to grip and release the knitting yarn by operation of a piston cylinder by the air solenoid. In this state, the knitting yarn Y4 is fed from the upper side to the lower side and is fed, and passes through the front surface of the splice nozzle 21.

  Then, a yarn switching signal based on a knitted fabric pattern inputted in advance is sent from a control unit (not shown) provided in the flat knitting machine to the yarn selection device 1, the yarn splicing device 2, the yarn feeding device 41, and the like. By this signal, the yarn supplying device 41 stops and the movement of the knitting yarn Y4 stops, and the yarn selecting device 1, the yarn splicing device 2, and the like are activated. Then, in the second stage, as shown in FIGS. 6B-1 and 6B-2, the yarn selection plate G1 that holds the selection yarn Y1 (indicated by a one-dot chain line) to be the type change target is driven. As the yarn selection plate G1 moves inward, the selection yarn Y1 is positioned at the selection position P1. Thereafter, the yarn guide lever 10 rotates (forward rotation) in the arrow direction III.

  Subsequently, in the third stage, as shown in FIGS. 7A-1 and 7A-2, the selected engagement yarn 101 has the first engagement portion 101 of the yarn guide lever 10 at the selection position P1 by the rotation of the yarn guide lever 10. Engage Y1. The selected yarn Y1 is disposed in the yarn restricting portion 103 of the yarn guide lever 10, and is thereby guided downward while being restricted to the specific position P2. The second engaging portion 102 of the yarn guide lever 10 protrudes from the separator 12 and moves along the arcuate upper edge portion 12a of the separator 12. FIG. 7A-1 shows a state at the moment when the second engagement portion 102 is brought into contact with and engaged with the knitting yarn Y4. In this state, a part of the selected yarn Y1 and the knitting yarn Y4 are located inside the separator 12.

  Furthermore, in the fourth stage, as shown in FIGS. 7B-1 and 7B-2, the yarn guide lever 10 further rotates, and the first engagement portion 101 is at the lowest position below the splice nozzle 21. Be placed. Accordingly, the selection yarn Y1 is guided while being engaged with the first engagement portion 101 and sliding. Further, the selected yarn Y <b> 1 is guided while sliding on the yarn restricting portion 103 while being regulated at the specific position P <b> 2 by the yarn restricting portion 103 of the yarn guide lever 10, and is guided to the front surface of the splice nozzle 21. As described above, the selected yarn Y1 is guided while being regulated to the specific position P2 of the yarn regulating portion 103, so that the selected yarn Y1 is not entangled with the knitting yarn Y4 and the other knitting yarns Y2, Y3, etc. 21 to the front.

  As described above, in the state shown in FIGS. 7A-1 and 7A-2, the second engagement portion 102 is in contact with and engaged with the knitting yarn Y4. From this state, the yarn guide lever 10 further moves. It rotates (see FIG. 7B-1 and FIG. 7B-2). Thereby, the knitting yarn Y4 is guided by being engaged with the second engagement portion 102, and moves from the inside to the outside of the separator 12. That is, the knitting yarn Y4 moves to the standby position P3 where the knitting yarns Y1 to Y3, Y5 to Y8 (knitting yarns other than those during knitting) stand by.

  Thereafter, in the fifth stage, as shown in FIGS. 8A-1 and 8A-2, the yarn presser member 30 is driven to clamp the knitting yarns Y2 to Y8 other than the selected yarn Y1 inside the separator 12. Thereafter, before the yarn holding member 31 is driven to release the yarn end, suction of the yarn end gripping suction 32 is started. Thereby, the yarn end holding suction 32 sucks and holds the yarn ends of the knitting yarns Y1 to Y3 and Y5 to Y8. The yarn presser member 30 is configured to grip and release the knitting yarn by operation of a piston cylinder by an air solenoid. With the suction force of the yarn end gripping suction 32, as shown in FIG. 1, the yarn ends of the knitting yarns Y2 to Y8 are securely held by the tension applied by the repulsive force of the top spring 46 provided in the flat knitting machine. Therefore, a thread presser member 30 is provided.

  In the sixth stage, as shown in FIGS. 8B-1 and 8B-2, the yarn insertion portion 20a provided in the disc guide 20 is selected by the selection yarn Y1 and the knitting yarn guided to the front surface of the splice nozzle 21. Y4 is pushed into the yarn accommodating hole 21a of the splice nozzle 21 and inserted. Thereby, the selection yarn Y1 and the knitting yarn Y4 are arranged at the yarn splicing position P4.

  As shown in FIG. 11, the first drive gear 51 and the second drive gear 52 are rotationally driven by the rotational drive of the drive motor 50. The first drive gear 51 is connected to a link mechanism (not shown) for performing a series of operations of the yarn splicing 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 and rotationally drives the disc guide 20 attached to the second driven gear 54. A part of the disc guide 20 is notched, and a key-like thread insertion portion 20a is provided on one side of the notch. Then, when the disk guide 20 rotates in the arrow direction IV, the selected yarn Y1 and the knitting yarn Y4 move while being hooked and engaged with the yarn insertion portion 20a, and enter the yarn accommodation hole 21a of the splice nozzle 21. Pushed in.

  At the same time, the yarn splicing device 2 operates as shown in FIG. The yarn splicing device 2 is an air splicer that splics yarn by ejecting compressed air, and includes a splice nozzle 21. The splice nozzle 21 includes a yarn accommodation hole 21a that accommodates two knitting yarns. Further, the splice nozzle 21 is provided with air ejection means 26 for ejecting compressed air to the yarn accommodation hole 21a. And the nozzle opening 21b is provided in the direction which cross | intersects the thread | yarn accommodation hole 21a from this air ejection means 26. As shown in FIG. The air ejection means 26 is configured to control the ejection of air by opening and closing the electromagnetic valve 27.

One side of the splice nozzle 21 is provided with a clamping means 22 for gripping two knitting yarns accommodated in the yarn accommodation hole 21a and arranged at the yarn splicing position P4, and the other side has two knitting yarns. A cutter 23 for adjusting the length by cutting the yarn end side of the yarn is provided. Further, on one side of the splice nozzle 21, there are provided a nozzle cover 24 for closing one side of the yarn accommodation hole 21a, and a yarn drawing lever 25 for adjusting the yarn splicing length and pulling it out.
The splice nozzle 21, the clamp means 22, the cutter 23, the nozzle cover 24, and the thread drawing lever 25 are configured to be driven in series by a link mechanism (not shown) connected to the first drive gear 51.

  As shown in FIG. 10A, the selected yarn Y1 and the knitting yarn Y4 are sucked and held by the yarn end holding suction 32 in a state where the yarn ends are aligned in the same direction, and inserted into the yarn receiving hole 21a of the splice nozzle 21, Located at the splicing position P4. Then, as shown in FIG. 10B, the selected yarn Y1 and the knitting yarn Y4 are gripped by the clamping means 22, and the nozzle cover 24 and the yarn drawing lever 25 are moved to a position where the yarn accommodation hole 21a is closed. Then, as shown in FIG. 10C, the cutter 23 operates to cut the yarn ends of the selected yarn Y1 and the knitting yarn Y4 with a predetermined length. The remaining yarn end of the selected yarn Y1 is sucked by the yarn end gripping suction 32.

  Thereafter, as shown in FIG. 10D, the yarn pull-out lever 25 slightly moves in the arrow direction V to adjust the joint lengths of the selected yarn Y1 and the knitting yarn Y4. In the state shown in FIG. 10D, the air ejection means 26 is operated, and compressed air is blown to the selected yarn Y1 and the knitting yarn Y4 through the nozzle opening 21b, thereby untwisting the yarn end portion of each knitting yarn (see FIG. 10E). . In the state of FIG. 10E, the yarn drawing lever 25 is further moved in the arrow direction V, and the selected yarn Y1 and the knitting yarn Y4 are pulled out from the yarn accommodation hole 21a (see FIG. 10F). When the yarn end of the untwisted portion passes near the compressed air blowing port of the yarn accommodating hole 21a, the fibers are entangled, and the selected yarn Y1 and the knitting yarn Y4 are spliced. When pulling out the entangled portion from the yarn accommodation hole 21a, the selection yarn Y1 and the knitting yarn Y4 are pulled out while being pressed by the nozzle cover 24, so that the entangled portion is prevented from being curled and the seam portion is unlikely to become a hump.

  Then, as shown in FIG. 10G, after the selected yarn Y1 and the knitting yarn Y4 are completely pulled out from the yarn accommodating hole 21a, the clamping means 22 is opened, and the cutter 23, the nozzle cover 24, and the yarn drawing lever 25 are restored to their original positions. Return to position and complete splicing.

  Thereafter, in the seventh stage of the yarn selecting device 1, as shown in FIGS. 9A-1 and 9A-2, the yarn holding member 31 holds the knitting yarns Y2 to Y8 other than the selected yarn Y1. Then, the yarn presser member 30 releases the knitting yarns Y2 to Y8, and at the same time, the suction of the yarn end gripping suction 32 stops. Further, in the eighth stage, as shown in FIGS. 9B-1 and 9B-2, the yarn guide lever 10 is rotated (reversely rotated) to the original state. Thereafter, the yarn selecting plate G1 returns to the original position, and the selected yarn Y1 is disposed inside the separator 12, the yarn feeding device 41 is operated, and the selected yarn Y1 is fed and fed to the flat knitting machine. The

  FIG. 12 is a time chart showing the operating states of the main members described above. As shown in FIG. 12, after the yarn guide lever 10 rotates forward, the drive motor 50 makes one rotation (0 ° to 360 °). One rotation of the drive motor 50 causes the disk guide 20 to rotate once, and the clamp means 22, the cutter 23, the nozzle cover 24, the thread pull-out lever 25, and the like are driven, and a series of operations from the start to the end of the piecing. Is configured to be performed.

As shown in FIG. 7, in this embodiment, the first engagement portion 101 first engages the selected yarn Y1 at the selection position P1, and the second engagement portion 102 later engages the knitting yarn Y4. By joining, the knitting yarn Y4 is moved from the inside of the separator 12 to the outside.
However, for example, as shown in each figure of FIG. 13 (showing the state corresponding to each figure of FIG. 7), when the knitting yarn is the knitting yarn Y1 and the selected yarn is the knitting yarn Y4, the second engagement The selection portion Y4 engages the knitting yarn Y1 and moves from the inside to the outside of the separator 12 without the joining portion 102 engaging the knitting yarn Y1. That is, as shown in FIGS. 13A-1 and 13A-2, the first engagement portion 101 rotates in a state where the selection yarn Y4 is engaged, so that the selection yarn Y4 moves from the outside to the inside of the separator 12. Move in a crossed state. As a result, the knitting yarn Y1 intersects and engages with the selection yarn Y4 before the second engagement portion 102 is engaged. In this state, when the yarn guide lever 10 further rotates, the selected yarn Y4 moves the knitting yarn Y1 from the inner side to the outer side of the separator 12, as shown in FIGS. 13B-1 and 13B-2.

  That is, when the selected yarn crosses the knitting yarn after engaging the first engagement portion 101, the selected yarn engages the knitting yarn and moves to the standby position P3 instead of the second engagement portion 102. To do. On the other hand, if the selected yarn does not intersect the knitting yarn after engaging the first engagement portion 101, the second engagement portion 102 engages the knitting yarn and moves to the standby position P3.

  In the above-described embodiments, the flat knitting machine has been described. However, the yarn switching device according to the present invention can also be installed in a textile machine such as an automatic winder that splics a yarn selected from a plurality of types of yarn.

Claims (3)

A yarn is selected between a plurality of types of yarn supply packages having different colors and the yarn supplying device in the knitting machine, and the selected selected yarn and the knitting yarn being knitted are spliced to supply the knitting machine. A yarn switching device for supplying yarn to the device,
A suction means for collectively sucking and holding a plurality of yarns; and a clamp means for collectively clamping a plurality of yarns between the suction means and the yarn supply package. A yarn switching device in a knitting machine or the like, characterized by comprising first and second clampers which are arranged at two locations along the line and selectively operate.   The first clamper in the clamping means is configured to collectively clamp a plurality of yarns on a yarn path when the suction means is operated in conjunction with the suction means. A yarn switching device in the knitting machine or the like described in 1.   The second clamper in the clamping means is usually a yarn holding member that collectively clamps a plurality of yarns and releases the clamp when the selected yarn is selected, and the first clamper normally clamps the clamp. 2. A thread presser member that is open and that presses the thread before the thread holding member is opened when the selected thread is selected, and releases the thread presser after starting the thread holding. A yarn switching device in the knitting machine or the like according to 2.

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