Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
  • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
  • D04B15/54—Thread guides
  • D04B15/56—Thread guides for flat-bed knitting machines
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
  • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
  • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
  • B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
  • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
  • B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
  • B65H69/063—Preparation of the yarn ends
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
  • D04B1/10—Patterned fabrics or articles
  • D04B1/12—Patterned fabrics or articles characterised by thread material
  • D04B1/126—Patterned fabrics or articles characterised by thread material with colour pattern, e.g. intarsia fabrics
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
  • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/30—Handled filamentary material
  • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

• the present invention relates to an apparatus for supplying a knitting yarn to a yarn supplying apparatus in a knitting machine or the like, and in particular, sequentially selects one of a plurality of different types of different types of yarns such as colors,
• the present invention relates to a yarn splicing method and apparatus effective for supplying the yarn to a yarn feeding device of a knitting machine while splicing the yarn each time.
• a yarn selection device and a yarn splicing device are 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 knitted during knitting.
• an apparatus for automatically piecing a yarn and knitting a desired color pattern In such a device, the yarn ends of a plurality of types of packages are held, only one selected selected yarn is released, and this is introduced into the yarn splicing device, so that An effective thread switching device that splices yarns between them was powerful.
• Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-27463 (Abstract, FIGS. 1 to 6)
• Patent Document 2 Japanese Patent Application No. 2005-25124 (Summary, Figures 1 to 3)
• the present invention relates to the yarn switching device in a knitting machine or the like as described above, and sequentially selects one of a plurality of different types of different types of yarns such as colors and the like.
• the present invention provides a yarn splicing method and apparatus that are extremely effective for supplying to a yarn feeding device of a knitting machine while splicing each time. Means for solving the problem
• the present invention specifically accommodates and clamps two yarn ends to be spliced in a splice nozzle in a state where they are aligned in the same direction, Before cutting the yarn ends of the two yarns to be spliced, a jet air flow is generated in the splice nozzle, and the jet air flow acts on the yarn in the splice nozzle to splice the two spliced yarns.
• a yarn splicing method in which the yarn end side of the yarn is untwisted and the blown air flow is applied, or after the yarn is cut, the yarn is cut and spliced is configured.
• the invention according to claim 2 is the yarn splicing method according to claim 1, wherein the two yarns to be spliced are elastic yarns. It is what
• the invention according to claim 3 includes a yarn accommodation hole for accommodating the two yarns with the two yarn ends to be spliced aligned in the same direction.
• the yarn splicing nozzle is provided with an air ejection means for ejecting compressed air from a direction intersecting the yarn accommodation hole, and is provided on one side of the yarn accommodation hole in the yarn splicing nozzle.
• the two yarn ends to be spliced are accommodated in the yarn splicing nozzle in a state where they are aligned in the same direction, and clamped.
• a jet air flow is generated in the splice nozzle, and the jet air flow is applied to the yarn in the splice nozzle so that the two spliced yarns are spliced.
• the yarn end side of the yarn is untwisted and the blown air flow is applied, or after being applied, the yarn is cut and spliced.
• two yarns are already cut.
• the yarn is getting tangled by the action of the jet air flow, and the yarn splicing nozzle force can be reliably spliced without jumping out.
• the yarn force is an elastic yarn to be spliced, the yarn must be cut before cutting. Since the yarn splicing is performed by jetting the air flow standing up, the problem that the yarn end contracts and jumps out at the time of yarn cutting is surely solved, and this point also works extremely effectively. Is.
• FIG. 1 is a schematic side view showing an example of a flat knitting machine equipped with a yarn splicing device according to the present invention.
• FIG. 2 is a schematic perspective view showing a specific configuration example of a yarn switching device in a knitting machine or the like.
• FIG. 3 is a schematic perspective view showing details of a main part of the yarn selection device.
• FIG. 4 is a schematic perspective view showing details of a main part of the yarn splicing device.
• FIG. 5 is a view showing a thread guide lever
• FIG. 5A is a schematic front view thereof
• FIG. 5A is a schematic front view thereof
• FIG. 5A is a right side view of FIG. 5A
• FIG. 5C is a cross-sectional view taken along line II in FIG. 5B.
• FIGS. 6 to 9 are diagrams for explaining the thread selection operability procedure.
• FIGS. 6A-1 and 6A-2 are front and side views showing the first stage.
• FIG. 6B-1 and FIG. 6B 2 are a front view and a side view showing the second stage.
• FIGS. 7A-1 and 7A-2 are a front view and a side view showing the third stage.
• FIG. 7B-2 are a front view and a side view showing the fourth stage.
• FIGS. 8A-1 and 8A-2 are a front view and a side view showing the fifth stage.
• FIG. 8B-2 are a front view and a side view showing the sixth stage.
• Fig. 9A-1 and Fig. 9A-2 are front and side views showing the seventh stage.
• FIG. 9B-2 are a front view and a side view showing the eighth stage.
• FIG. 10A to FIG. 10F are side cross-sectional views of the yarn splicing device for explaining the operation procedure of the yarn splicing device.
• FIG. 11 is a perspective view showing a part of the apparatus including a thread insertion rotary plate.
• FIG. 12 is a time chart showing the operating state of the thread switching device.
• FIG. 7 is an explanatory diagram for explaining another example of the state corresponding to each figure.
• FIG. 1 is a schematic side view showing a flat knitting machine equipped with a splicing method and apparatus according to the present invention.
• This flat knitting machine includes a machine base 40 and a yarn feeding device 41 incorporated in the machine base 40. With respect to the machine base 40, a yarn selection device 1 and a yarn joining device 2 are provided. Are 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 is provided with a needle bed 42 in which a plurality of knitting needles are juxtaposed in a freely movable manner.
• the machine base 40 further 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.
• the eight types of knitting yarns ⁇ 1 to ⁇ 8 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 ⁇ 1 to ⁇ 8 is selected by the yarn selection device 1.
• Two knitting yarns (hereinafter referred to as “selected yarns”) are spliced together with the knitting yarn being knitted (hereinafter referred to as “knitting yarns”) 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 one-dollar bed 42 while being reciprocated by being held by the carrier 43.
• the knitting yarns ⁇ 1 to ⁇ 8 are supplied to the yarn selecting device 1 through the top panel 46 for applying tension. Then, the yarn selecting device 1 and the yarn splicing device 2 change the colors of the knitting yarns ⁇ 1 to ⁇ 8 being knitted according to the pattern of the knitted fabric 45 to be knitted.
• the yarn switching device in a knitting machine or the like basically selects a yarn between a plurality of types of yarn supply packages W1 to W8 having different colors and the yarn supply device 41 in the knitting machine. It comprises a yarn selecting device 1 and a yarn splicing device 2 for splicing the selected yarn selected by the yarn selecting device 1 and the knitting yarn being knitted.
• This yarn switching device clamps a plurality of yarns in a lump between a suction means 28 for sucking and holding a plurality of yarns at a time, and between the suction means 28 and the yarn supply packages Wl 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 selectively operate with respect to each other. It is power.
• the first clamper 29A in the clamp means 29 includes the suction means In conjunction with 28, a plurality of yarns on the yarn path are collectively clamped during the suction operation of the suction means 28.
• the second clamper 29B in the clamping means 29 normally clamps a plurality of yarns at once and releases the clamp when selecting a selected yarn.
• the first clamper normally releases the clamp, and when selecting the selected thread, presses the thread before opening the thread holding member 31 and releases the thread presser after starting the thread holding. It is constituted by the thread presser member 30 to be operated.
• FIG. 2 is a schematic oblique view showing the yarn selection device 1 and the yarn splicing device 2 in an enlarged manner.
• the thread selection device 1 includes eight thread selection plates G1 to G8 at the top. Each thread selection plate G1 to G8 has a threading ring g at the bottom.
• the knitting yarns Y1 to Y8 from the knitting yarn packages W1 to W8 are threaded through the thread threading ring g of the yarn selection plates G1 to G8, and one of the knitting yarns is sent to the yarn feeding device 41.
• the yarn threading 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.
• 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 selecting device 1 includes a separator 12 for arranging the knitting yarn and the other knitting yarn separately. 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 main parts of the yarn selecting device 1
• FIG. 4 is a schematic perspective view showing details of main parts of the yarn splicing device 2. As shown in FIG.
• the yarn selection device 1 is provided with a thread presser member 30, a thread holding member 31, and a thread end gripping sac- tion 32 in the vicinity of the separator 12.
• the thread presser member 30 is configured to move forward and backward by the thread presser cylinder 33. Normally, the thread presser member 30 is retracted and operates in the separator 12 and the thread presser cylinder 33. The yarn path between the end 33a is open, and the yarn is clamped together between the separator 12 and the working end 33a of the thread presser cylinder 33 during forward operation.
• the yarn holding member 31 is configured to advance and retract by the yarn holding cylinder 34. Normally, it is moving forward, and the thread is clamped in a lump between the separator 12 and the working end 34a of the thread holding cylinder 34, and retracted when the thread is switched. And the yarn end between the working end 34a of the yarn holding cylinder 34 are opened.
• the yarn splicing device 2 has a configuration in which two knitting yarns are spliced with their yarn ends aligned in the same direction.
• This is a splicer type splicing device that splics air by blowing air.
• the yarn splicing device 2 includes a splice nozzle 21.
• the splice nozzle 21 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.
• the splice nozzle 21 is provided with an air ejection means 26 having a nozzle opening 21b for ejecting an air flow such as compressed air from a direction intersecting the yarn accommodating hole 21a.
• the air ejection means 26 is an electromagnetic valve. 27, and has the power to control the ejection of air by opening / closing control of the electromagnetic valve 27.
• the yarn splicing device 2 includes a disc guide 20 for guiding two knitting yarns to the yarn splicing position, and is accommodated in the yarn accommodation hole 21a on one side of the yarn accommodation hole 21a.
• the yarn splicing device 2 is configured to be operated by a single drive motor 50.
• a yarn positioning unit 35 for determining the position of the knitting yarn and sending it to the yarn feeding device 41 is provided below the yarn splicing device 2, a yarn positioning unit 35 for determining the position of the knitting yarn and sending it to the yarn feeding device 41 is provided below the yarn splicing device 2, a yarn positioning unit 35 for determining the position of the knitting yarn and sending it to the yarn feeding device 41 is provided.
• the yarn positioning portion 35 has a slit-shaped notch, and the knitting yarn is hooked on the notch for
• FIG. 5 is a diagram showing the yarn 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
• FIG. 5C is a cross-sectional view taken along line II in FIG. 5B.
• the yarn guide lever 10 has a main body portion 105 formed in a generally 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. 101 is cut out 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.
• the yarn guide lever 10 is provided with a second engagement portion 102 for engaging the knitting yarn at substantially the center.
• the second engaging portion 102 protrudes from the main body portion 105.
• 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 ′.
• 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.
• FIGS. 6A, 6B, 7A, 7B, 8A, 8B, 9A, and 9A are diagrams for explaining the operation of the thread selection device and the like.
• the thread selection device is shown in FIGS. 6A, 6B, 7A, 7B, 8A, 8B, 9A, and 9A. It operates from the 1st stage to the 8th stage according to the procedure shown in 9B.
• A-1 and B-1 in each figure are schematic front views, and A-2 in each figure.
• B-2 is a schematic left side view corresponding to A-1 and B-1.
• FIG. 10 is a view for explaining the operation procedure of the yarn splicing device according to the present invention step by step.
• FIG. 11 is a perspective view showing a part of the apparatus including the disk guide.
• the yarn selection device 1 holds eight knitting yarns Y1 to Y8 on eight yarn selection plates G1 to G8. ing.
• the knitting yarn Y4 (indicated by a two-dot chain line) is arranged inside the separator 12 (the left side in FIG. 6-2). Furthermore, seven knitting yarns ⁇ 1 to ⁇ 3 and ⁇ 5 to ⁇ 8 other than the knitting yarn ⁇ 4 are arranged on the outer side of the separator 12 (the right side in Fig. 6 ⁇ -2) and are clamped and held by the yarn holding member 31. It has been.
• 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 the operation of a piston cylinder by the air solenoid. In this state, the knitting yarn ridge 4 is fed from the upper side to the lower side and fed and passes through the front surface of the splice nozzle 21.
• a yarn switching signal based on a knitted fabric pattern inputted in advance from a control unit (not shown) provided in the flat knitting machine generates a yarn selection device 1, a yarn splicing device 2, and a yarn feeding device 41. Sent to etc. By this signal, the yarn feeding device 41 stops, the movement of the knitting yarn Y4 stops, and the yarn selection device 1, the yarn splicing device 2, etc. operate.
• the yarn selection plate G1 that holds the selection yarn Y1 (shown by the dotted line) as much as the type change target is driven.
• the thread selection plate G1 moves inward, the selected thread Y1 is positioned at the selected position P1. Thereafter, the yarn guide lever 10 rotates (forward rotation) in the direction of arrow III.
• FIGS. 7A-1 and 7A-2 the rotation of the thread guide lever 10 causes the first engagement portion 101 of the thread guide lever 10 to move to the selected position P1.
• the selected yarn Y1 is arranged 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 in which the second engaging portion 102 is in contact with and engaged 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.
• the yarn guide lever 10 further rotates, and the first engaging portion 101 is located at the lowest position below the splice nozzle 21. Located in the lower position. Accordingly, the selection yarn Y1 is guided while being engaged with the first engagement portion 101 and sliding. Further, the selected yarn Y1 is guided while sliding on the yarn restricting portion 103 while being restricted to the specific position P2 by the yarn restricting portion 103 of the yarn guide lever 10, and is guided to the front surface of the splice nozzle 21.
• a splice nozzle that guides the selected yarn Y1 while restricting it to the specific position P2 of the yarn restricting section 103, so that the selected yarn Y1 does not get entangled with the knitting yarn Y4 and other knitting yarns Y2, ⁇ 3, etc. It can be moved to the front of 21.
• the yarn presser member 30 is driven, and the knitting yarns Y2 to Y8 other than the selected yarn Y1 inside the separator 12 are driven. Clamp. Thereafter, before the yarn holding member 31 is driven to release the yarn end, the suction of the yarn end gripping suction 32 is started. As a result, the yarn end grasping suction 32 sucks and grasps the yarn ends of the knitting yarns ⁇ 1 to ⁇ 3 and ⁇ 5 to ⁇ 8.
• the yarn presser member 30 is configured to grip and release the knitting yarn by operation of a piston cylinder by an air solenoid. As shown in Fig.
• 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 disk guide 20.
• the second drive gear 52 rotates the disk guide 20 attached to the second driven gear 54 by engaging the first driven gear 53 and the second driven gear 54 together.
• 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.
• the disk guide 20 moves in the state where it is engaged with the selected yarn Y1 and the knitting yarn Y4 force yarn insertion portion 20a by rotating in the direction of arrow IV, and the yarn accommodation hole of the splice nozzle 21 is moved. Pushed into 21a.
• the yarn splicing device 2 operates as shown in FIG.
• the yarn splicing device 2 is an air splicer that splices 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.
• the splice nozzle 21 is provided with air ejection means 26 for ejecting compressed air to the yarn accommodating hole 21a.
• a nozzle opening 21b is provided in a direction intersecting the yarn accommodating hole 21a from the air ejection means 26. This air spout
• the stage 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 holding two knitting yarns accommodated in the yarn accommodation hole 21a and arranged at the yarn splicing position P4, and on the other side, A cutter 23 is provided for adjusting the length by cutting the yarn ends of the two knitting yarns. Further, on one side of the splice nozzle 21, there are provided a nozzle cover 24 for closing one side of the thread accommodation hole 21a, and a thread drawing lever 25 for adjusting and pulling out the thread joining length.
• the splice nozzle 21, the clamping 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.
• the selected yarn Y1 and the knitting yarn Y4 are sucked and gripped by the yarn end gripping sac- tion 32 with the yarn ends aligned in the same direction, and the yarn accommodating hole 2 la of the splice nozzle 21 And is located at the splicing position P4. Then, as shown in FIG. 10B, the selected yarn Y1 and the knitting yarn Y4 are clamped by the force clamping means 22, and the nozzle cover 24 and the yarn drawing lever 25 are moved to a position for closing the yarn accommodation hole 21a.
• a jet air flow is generated in the splice nozzle 21, and the jet air flow is applied to the yarn in the splice nozzle 21.
• the splicing nozzle 21 has a configuration in which the yarn ends of the two yarns to be spliced are untwisted, and the yarn is cut while the blown air flow is applied, and then the air spout is completed to complete the splicing.
• the air flow is generated on the splicing nozzle 21 and the yarn end side of the two yarns to be spliced is untwisted to cause the air flow to act. It includes a configuration in which the jet air flow is temporarily stopped and then the yarn is cut and the yarn splicing is completed when the yarn is cut.
• 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 2 lb. Untwist the yarn end of the yarn.
• the cutter 23 operates to cut the yarn ends of the selected yarn Y1 and the knitting yarn Y4 by a predetermined length. The remaining yarn end of the selected yarn Y1 is sucked by the yarn end gripping sac- tion 32.
• the timing for injecting the jet air flow into the two yarns by the air jetting means is performed before the air jetting means 26 and the cutter means 23 cut the two yarns by the cutter means 23, the timing for injecting the jet air flow into the two yarns by the air jetting means.
• System Means TC can be provided. By operating the timing control means TC, the generation timing of the blown air flow by the air blowing means 26 and the operation timing of the cutter means 23 are controlled, so that both the former configuration and the latter configuration can be appropriately selected. It is possible to execute it.
• the yarn pull-out lever 25 moves slightly in the arrow direction V to adjust the joint length of the selected yarn Y1 and the knitting yarn Y4.
• the yarn pull-out 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).
• 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.
• 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 less likely to have a hump shape.
• the selected yarn Y1 and the knitting yarn Y4 force as shown in FIG. 10F are completely pulled out from the yarn receiving hole 21a, and then the clamping means 22 is opened, and the cutter 23, the nozzle cover 24 and the yarn drawing lever are released. 25 returns to its original position and completes the splicing.
• the elastic yarns are entangled and spliced almost simultaneously when air is injected in the clamped state (Fig. 10B) and then the yarn is cut (Fig. 10C). Sometimes. In this case, yarn splicing is possible even when the drawing lever 25 is stopped.
• the yarn selection device 1 holds the knitting yarns Y2 to Y8 other than the selection yarn Y1, as shown in FIGS. 9A-1 and 9A-2. To do. Then, the yarn presser member 30 releases the knitting yarns ⁇ 2 to ⁇ 8, and at the same time, the suction of the yarn end gripping sac- tion 32 stops. Further, in the eighth stage, as shown in FIGS. 9B-1 and 9-2, the yarn guide lever 10 is rotated (reversed) to the original state. After that, the yarn selection plate G1 returns to the original position, and with the selected yarn Y1 placed inside the separator 12, the yarn feeding device 41 operates to send the selected yarn Y1 to the weft knitting machine.
• FIG. 12 is a time chart showing the operating states of the main members described above.
• the drive motor 50 rotates (0 ° to 360 °).
• the disk guide 20 rotates and the club
• the pump means 22, the cutter 23, the nozzle cover 24, the thread drawing lever 25, and the like are driven, and a series of operations up to the completion of the yarn joining start force are performed.
• the first engagement portion 101 first engages the selection yarn Y1 in the selection position P1, and the second engagement portion 102 later knitting.
• the knitting yarn Y4 is moved from the inside of the separator 12 to the outside.
• the knitting yarn (knitting yarn being knitted) is the knitting yarn Y1, and the selected yarn (knitting target to be changed)
• the second engagement portion 102 engages the selected yarn Y4 force without engaging the knitting yarn Y1, and the knitting yarn Y1 is engaged, so that the inner force of the separator 12 also moves outward. That is, as shown in FIG. 13A-1 and FIG. 13A-2, when the first engagement portion 101 rotates with the selection yarn Y4 engaged, the selection yarn Y4 moves from the outside to the inside of the separator 12. Move in a crossed state.
• the knitting yarn Y1 intersects and contacts the selection yarn Y4 before the second engagement portion 102 is engaged.
• the selected yarn Y4 force knitting yarn Y1 is moved from the inside of the separator 12 to the outside as shown in FIGS. 13B-1 and 13B-2.
• the selected yarn crosses the knitting yarn after engaging the first engaging portion 101
• the selected yarn cut off at the second engaging portion 102 engages the knitting yarn, and the standby position P3. Move to.
• the second engagement portion 102 engages the knitting yarn and moves to the standby position P3.
• 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.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Knitting Machines (AREA)
• Spinning Or Twisting Of Yarns (AREA)

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• 2006
  • 2006-09-27 EP EP06810617.8A patent/EP1959042B1/de active Active
  • 2006-09-27 WO PCT/JP2006/319126 patent/WO2007043336A1/ja active Application Filing
  • 2006-09-27 CN CN2006800376579A patent/CN101283135B/zh active Active
  • 2006-09-27 KR KR1020087006582A patent/KR101222116B1/ko active IP Right Grant
  • 2006-09-27 JP JP2007539861A patent/JP4677454B2/ja active Active

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