EP4332287A1 - End yarn processing device and end yarn processing method - Google Patents

End yarn processing device and end yarn processing method Download PDF

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Publication number
EP4332287A1
EP4332287A1 EP23194349.9A EP23194349A EP4332287A1 EP 4332287 A1 EP4332287 A1 EP 4332287A1 EP 23194349 A EP23194349 A EP 23194349A EP 4332287 A1 EP4332287 A1 EP 4332287A1
Authority
EP
European Patent Office
Prior art keywords
end yarn
needle bed
yarn
bed gap
processing device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23194349.9A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hiromasa KOMATSUBARA
Motoyuki HIRAHARA
Hajime Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shima Seiki Mfg Ltd
Original Assignee
Shima Seiki Mfg Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shima Seiki Mfg Ltd filed Critical Shima Seiki Mfg Ltd
Publication of EP4332287A1 publication Critical patent/EP4332287A1/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • 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
    • D04B15/565—Associated thread-clamping or thread-severing devices
    • 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
    • D04B15/10—Needle beds
    • 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
    • D04B15/40—Holders or supports for thread packages
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/24—Flat-bed knitting machines with independently-movable needles for producing patterned fabrics
    • D04B7/26—Flat-bed knitting machines with independently-movable needles for producing patterned fabrics with colour patterns

Definitions

  • the disclosure relates to a technique of an end yarn processing device and an end yarn processing method for processing an end yarn of a knitted fabric knitted in a flat knitting machine.
  • a yarn carrier is moved into a knitting width to perform stitch formation with a distal end of the knitting yarn held by a gripper device provided at both ends of the needle bed.
  • a gripper device provided at both ends of the needle bed.
  • an end yarn extending between the gripper and the first stitch of the knitted fabric may be cut using a cutter device.
  • the end yarn extending between the gripper and the final stitch of the knitted fabric may be cut using the cutter device to prepare for the next knitting.
  • Patent Literature 1 discloses a technique of gripping a knitting yarn between a final stitch of a knitted fabric and a yarn feeder with two grippers during knitting and cutting the knitting yarn between the two grippers.
  • the knitting yarn fed from the yarn feeder is located below the needle bed gap from the gripper to the first stitch of the knitted fabric and extends low near the needle bed gap, so that it is difficult to cut the end yarn near the knitted fabric.
  • the process of the knitting yarn that hangs down from the knitted fabric and remains on a side of the knitted fabric becomes complicated, which is not preferable.
  • There is no conventional end yarn processing device that solves such a problem.
  • Patent Literature 1 JP 4015980 B2
  • the disclosure has been made in view of the above circumstances, and an object thereof is to provide an end yarn processing device and an end yarn processing method capable of cutting an end yarn near a knitted fabric.
  • an end yarn processing device is an end yarn processing device movable along a longitudinal direction of a needle bed of a flat knitting machine, the end yarn processing device including: a holding means configured to hold an end yarn extending from an end yarn holding mechanism provided at least at an end of the needle bed to a knitting start stitch of a knitted fabric above a needle bed gap of the needle bed; and a cutting means configured to cut the end yarn held above the needle bed gap between a position adjacent to the holding means and the stitch.
  • the end yarn can be cut near the knitted fabric. More specifically, even the end yarn extending low near the needle bed gap can be cut near the knitted fabric.
  • the cutting means may cut the end yarn in the vicinity of the stitch.
  • the end yarn can be cut closer to the knitted fabric. Therefore, since the end yarn remaining in the knitted fabric can be shortened, post-processing after the knitting can be eliminated or facilitated.
  • the cutting means may cut the end yarn in a state where the end yarn is bridged in an up-and-down direction between the holding means and the stitch.
  • the end yarn can be cut closer to the knitted fabric.
  • the holding means may be configured to be able to advance and retreat with respect to the needle bed gap, and may be located below the end yarn when advanced to hold the end yarn above the needle bed gap.
  • the holding means may be configured to be movable up and down with respect to the needle bed gap, and may hold the end yarn above the needle bed gap by hooking and raising the end yarn in a state of being at a lowered position
  • the cutting means may be configured to be able to advance and retreat with respect to the needle bed gap, and may advance and cut the end yarn in a state where the holding means is at a raised position.
  • the end yarn can be bridged in the up-and-down direction, so that the end yarn can be easily cut. Furthermore, since the end yarn can be bridged in the up-and-down direction, the end yarn can be cut closer to the knitted fabric. Furthermore, it is possible to easily secure a space for actuation of the cutting means.
  • the holding means may be located above the needle bed gap and spaced apart from the needle bed gap, and the cutting means may be configured to be able to advance and retreat with respect to the needle bed gap, and the end yarn processing device may further include a displacement mechanism that acts on an end yarn of a portion extending from the holding means to a yarn feeder of the flat knitting machine to displace the end yarn to a position close to the needle bed gap and a position away from the needle bed gap.
  • the end yarn can be easily cut by the holding means being located away from the needle bed gap, and the difficulty in knitting due to the end yarn being fed from above can be suppressed.
  • the holding means may include a notch
  • the cutting means may be configured to be able to cut the end yarn passing through the notch from above the holding means and extending over the stitch, and may be arranged side by side with the holding means.
  • the cutting means is arranged side by side with the holding means, whereby the compactness of the end yarn processing device can be achieved.
  • the holding means may include a suction port configured to be movable up and down with respect to the needle bed gap, and suck the end yarn in a state where the suction port is at the lowered position, and hold the end yarn above the needle bed gap by raising.
  • the end yarn can be held above the needle bed gap by suction.
  • the suction port may enter an inside of the needle bed gap in a state of being at the lowered position.
  • the holding means can easily hold the end yarn.
  • the end yarn processing device may include an end yarn removing means configured to suck and remove the end yarn cut by the cutting means.
  • the cut end yarn can be suppressed from hindering the knitting of the knitted fabric.
  • an end yarn processing method is an end yarn processing method of processing an end yarn of a knitted fabric knitted with a flat knitting machine, the method including: holding an end yarn extending from an end yarn holding mechanism provided at least at an end of a needle bed of the flat knitting machine to a knitting start stitch of the knitted fabric above a needle bed gap of the needle bed; and cutting the end yarn held above the needle bed gap at an end on a side of the stitch.
  • the end yarn can be cut near the knitted fabric. More specifically, even the end yarn extending low near the needle bed gap can be cut near the knitted fabric.
  • the end yarn can be cut near the knitted fabric.
  • directions indicated by arrows U, D, F, B, L, and R in the drawings are defined as an upward direction, a downward direction, a forward direction, a backward direction, a left direction, and a right direction, respectively. Furthermore, in the drawings, illustration of each component is appropriately omitted for simplification of illustration.
  • An end yarn processing device 1 processes an end yarn of a knitted fabric knitted in a flat knitting machine 100. Before describing the end yarn processing device 1, an overall configuration of the flat knitting machine 100 to which the end yarn processing device 1 is applied will be described below with reference to FIG. 1 .
  • the flat knitting machine 100 mainly includes needle beds 110, a carriage 120, a yarn path rail 130, a top plate 140, a gripper device 150, and a suction device 160.
  • the needle beds 110 are disposed so as to face each other in a front-back direction across a needle bed gap S.
  • the front and rear needle beds 110 are disposed in an inverted V shape in a side view so as to be inclined upward toward the sides facing each other.
  • Each of the needle beds 110 is provided with a large number of knitting needles 111 arranged along a longitudinal direction of the needle bed 110.
  • a pair of front and rear carriages 120 is disposed to face the front and rear needle beds 110 from above.
  • the front and back carriages 120 are connected by a bridge 120a disposed to straddle a plurality of the yarn path rails 130.
  • Each of the carriages 120 can reciprocate along the longitudinal direction of each of the needle beds 110 by a servo motor.
  • the carriage 120 is provided with a needle selecting mechanism and a cam mechanism for selectively operating the knitting needles 111 of the needle bed 110.
  • the plurality of yarn path rails 130 is disposed above the needle bed gap S so as to extend along the longitudinal direction of the needle bed 110.
  • a yarn feeder 131 adapted to feed a knitting yarn Y is supported on the yarn path rails 130 so as to be movable.
  • the top plate 140 is provided with a yarn cone 141.
  • the yarn cone 141 is formed by winding the knitting yarn Y around a cone 141a.
  • the knitting yarn Y from the yarn cone 141 is fed to the yarn feeder 131 through an appropriate yarn feeding path.
  • the flat knitting machine 100 controls each section based on a knitting program and the like created in advance. Specifically, the flat knitting machine 100 can reciprocate the carriage 120 along the longitudinal direction of the needle bed 110 by controlling the operation of each section such as the servo motor.
  • the yarn feeder 131 is configured to reciprocate along the longitudinal direction of the needle bed 110 independently of the carriage 120.
  • the knitting operation can be carried out by advancing and retreating the knitting needles 111 with respect to the needle bed gap S by a cam mechanism or the like mounted on the carriage 120.
  • a knitted fabric K is knitted by repeating such reciprocating movement of the carriage 120.
  • the gripper device 150 holds the knitting yarn Y used for knitting the knitted fabric K, and is provided at both ends in the longitudinal direction of the needle bed 110.
  • the gripper device 150 is provided with a suction device 160 for sucking and removing the end yarn processed by the end yarn processing device 1. Note that, although FIGS. 2 and 3 illustrate a configuration in which two gripper devices 150 are provided at each of the right end and the left end of the needle bed 110, one gripper device may be provided at each of the right end and the left end of the needle bed 110.
  • the gripper device 150 illustrated in FIG. 2 is provided with the suction device 160.
  • the suction device 160 is provided with a discharge path 161 for the end yarn processed by the end yarn processing device 1, and can suck the end yarn cut by a cutter 60 to be described later from a suction port 161a formed at an upper end of the discharge path 161 and discharge the end yarn to the outside from a discharge path 161b formed at a lower end of the discharge path 161.
  • the yarn insertion for introducing the knitting yarn after the switching to the knitted fabric is carried out. Furthermore, also in the case of newly starting the knitting, the yarn insertion of introducing the new knitting yarn to the knitted fabric is carried out. Furthermore, at the end of the knitting, the yarn discharge of pulling out the knitting yarn from the termination of the knitted fabric is carried out. At the time of yarn insertion and yarn discharge, the process of cutting the end yarn of the knitted fabric is carried out by the end yarn processing device 1 provided in the flat knitting machine 100. The processing of the end yarn is performed in a state where a distal end of the knitting yarn Y is held by the gripper device 150. The end yarn cut by the end yarn processing device 1 is discharged to the outside by the suction device 160.
  • the end yarn processing device 1 cuts an end yarn extending from the gripper device 150 to a knitting start stitch of the knitted fabric K and an end yarn extending from a knitting end stitch of the knitted fabric K to the yarn feeder 131 to process the end yarns.
  • the knitting start stitch of the knitted fabric K may be referred to as a "first stitch”
  • the knitting end stitch of the knitted fabric K may be referred to as a "last stitch”.
  • the end yarn processing device 1 is configured to be movable along the longitudinal direction of the needle bed 110 of the flat knitting machine 100.
  • the end yarn processing device 1 is disposed on one carriage 120 of the pair of front and back carriages 120. In the present embodiment, the end yarn processing device 1 is disposed in the carriage 120 on a front side.
  • the end yarn processing device 1 is disposed on each of a right side surface and a left side surface of the carriage 120.
  • the left and right end yarn processing devices 1 are configured symmetrically to each other.
  • the end yarn processing device 1 on the left side will be described, and the description of the end yarn processing device 1 on the right side will be omitted unless otherwise specified.
  • the end yarn processing device 1 includes a first base 10, a first drive source 20, a catcher 30, a second base 40, a second drive source 50, and a cutter 60.
  • the first base 10 is formed in a plate shape, and is provided with a plate surface facing a left-right direction.
  • the first base 10 is formed to support the first drive source 20 described later.
  • the first drive source 20 is provided on a left surface of the first base 10 and generates a driving force.
  • a motor is used, but any drive source such as an actuator driven by compressed air may be used.
  • FIGS. 4 , 5A and 5B different types of drive sources are illustrated.
  • the operation of the first drive source 20 is controlled by a control unit (not illustrated).
  • the catcher 30 is disposed closer to the needle bed gap S than the first drive source 20, and holds the end yarn of the knitted fabric K.
  • “holding” of the end yarn by the catcher 30 also means including “locking” of the end yarn.
  • the catcher 30 is formed in a substantially L-shaped plate shape in a side view, and is provided so as to be inclined downward toward the needle bed gap S. More specifically, the catcher 30 includes a plate-like main body 31 inclined downward toward the needle bed gap S, and a hook 32 bent so as to be inclined upward and rearward is formed at an end of the main body 31 on a side of the needle bed gap S.
  • the catcher 30 is configured to be operable by a driving force of the first drive source 20.
  • the catcher 30 is configured to be able to advance and retreat with respect to the needle bed gap S by moving forward and backward. More specifically, as illustrated in FIG. 5B , the catcher 30 is configured to be movable so as to advance with respect to the needle bed gap S while descending, and to retreat from the needle bed gap S while ascending.
  • a position where the catcher 30 advances with respect to the needle bed gap S may be referred to as a "lowered position”
  • a position where the catcher 30 retreats with respect to the needle bed gap S may be referred to as a "raised position”.
  • the lowered position of the catcher 30 is indicated by a two-dot chain line, and the raised position of the catcher 30 is indicated by a solid line. Note that, in FIG. 5B , the lowered position of the catcher 30 is above the needle bed gap S, but may be below the needle bed gap S.
  • the catcher 30 thus formed can hold the end yarn extending from the gripper device 150 to the first stitch of the knitted fabric K above the needle bed gap S of the needle bed 110 at the time of processing the end yarn of the knitted fabric K.
  • "above the needle bed gap S” means above an upper end of the needle bed 110.
  • the catcher 30 can hold the end yarn extending from the last stitch of the knitted fabric K to the yarn feeder 131 at a position above the needle bed gap S of the needle bed 110.
  • the second base 40 is formed in a plate shape, and is provided on the left side of the first base 10 with a plate surface facing a substantially up-and-down direction.
  • the second base 40 is formed to support the second drive source 50 described later.
  • the second drive source 50 is provided on an upper surface of the second base 40 and generates a driving force.
  • a motor is used, but any drive source such as an actuator driven by compressed air may be used.
  • FIGS. 4 , 5A and 5B different types of drive sources are illustrated.
  • the operation of the second drive source 50 is controlled by a control unit (not illustrated).
  • the cutter 60 is provided closer to the needle bed gap S than the second drive source 50, and cuts the end yarn extending from the gripper device 150 to the first stitch of the knitted fabric K at an end on a side of the stitch.
  • the "end on the side of the stitch" of the end yarn means a position 1 mm to 30 mm from the stitch, preferably a position 1 mm to 10 mm from the stitch, and more preferably a position 1 mm to 5 mm from the stitch. More specifically, the cutter 60 cuts the end yarn held above the needle bed gap S by the catcher 30 between a position adjacent to the catcher 30 and the first stitch of the knitted fabric K.
  • the "position adjacent to the catcher 30" includes not only a downstream of the catcher 30 in a yarn supplying direction but also an upstream of the catcher 30.
  • the cutter 60 cuts the end yarn between the catcher 30 and the first stitch of the knitted fabric K.
  • the cutter 60 is configured to be switchable between a state in which the end yarn is not cut and a state in which the end yarn is cut by opening and closing a first blade portion 61 and a second blade portion 62.
  • the cutter 60 is provided on an upper surface of the second base 40 and below the catcher 30.
  • the cutter 60 is configured to be operable by a driving force of the second drive source 50.
  • the cutter 60 is configured to be able to advance and retreat with respect to the needle bed gap S by moving forward and backward.
  • the cutter advances with respect to the needle bed gap S, the cutter is located between the catcher 30 at the raised position and the needle bed gap S.
  • the first blade portion 61 and the second blade portion 62 are opened and the end yarn is not cut at the position retreated with respect to the needle bed gap S, and the first blade portion 61 and the second blade portion 62 are closed and the end yarn can be cut at the position advanced with respect to the needle bed gap S.
  • FIGS. 6A to 6D and 7A to 7D illustrate an example in which the knitted fabric K formed in a horizontal stripe pattern is knitted with a red knitting yarn YR and a blue knitting yarn YB, and illustrate a scene in which the red knitting yarn YR is inserted to switch the yarn used for knitting from the blue knitting yarn YB to the red knitting yarn YR.
  • FIG. 6A illustrates a state immediately before the red knitting yarn YR is inserted after being knitted with the blue knitting yarn YB.
  • the blue knitting yarn YB is in a state after yarn discharge to be described later is performed.
  • the yarn feeder 131 for supplying the red knitting yarn YR is located on the side of the needle bed 110.
  • the red knitting yarn YR is supplied from the yarn cone 141 to the yarn feeder 131, and the end of the knitting yarn YR is held by the gripper device 150.
  • the catcher 30 on the left side moves to the lowered position and advances with respect to the needle bed gap S.
  • the yarn feeder 131 moves to a side of the knitted fabric K, and the red knitting yarn YR extends over the catcher 30.
  • the carriage 120 and the yarn feeder 131 move into a knitting width, and for example, several stitches are knitted by the knitting needles 111 and the like. At this time, it is preferable to carry out unraveling prevention knitting on the knitting start portion. The same applies to other embodiments described later.
  • the left catcher 30 moves to a position where the end yarn extends in the up-and-down direction, and in this state, the left catcher 30 moves from the lowered position to the raised position, and retreats with respect to the needle bed gap S to lift the red knitting yarn YR upward.
  • the catcher 30 on the left side is located below the end yarn when advancing with respect to the needle bed gap S, and holds the end yarn above the needle bed gap S.
  • "at the time of advancement" of the catcher 30 means not the timing at which the catcher advances with respect to the needle bed gap S but a state in which the catcher 30 advances with respect to the needle bed gap S.
  • the catcher 30 on the left side holds the end yarn above the needle bed gap S such that the end yarn between the first stitch and the catcher 30 extends in the up-and-down direction by hooking the end yarn in a state of being at the lowered position and raising to the raised position.
  • the suction device 160 sucks the end yarn to apply tension on the red knitting yarn YR.
  • the cutter 60 advances between the catcher 30 and the first stitch of the knitted fabric K above the needle bed gap S, and cuts the end yarn between the catcher 30 and the first stitch of the knitted fabric K. More specifically, the cutter 60 advances with respect to the needle bed gap S with the catcher 30 at the raised position, and cuts the end yarn extending in the up-and-down direction. The cut end yarn is sucked and removed by the suction device 160, and is discharged to the outside by releasing the holding by the gripper device 150.
  • the knitting yarn Y fed from the yarn feeder 131 extends low in the vicinity of the needle bed gap S, such as being located below the needle bed gap S from the gripper device 150 to the first stitch of the knitted fabric K, and thus it is difficult to cut the end yarn. Therefore, in the end yarn processing device 1 according to the present embodiment, the knitting yarn Y extending from the gripper device 150 to the first stitch of the knitted fabric K is held above the needle bed gap S by the catcher 30, and thus the knitting yarn Y can be easily cut by the cutter 60.
  • the cutter 60 can cut the end yarn in a state where the end yarn is bridged in the up-and-down direction between the catcher 30 and the first stitch by moving the catcher 30 to a position where the end yarn extends in the up-and-down direction at the time of cutting the end yarn.
  • the end yarn is cut above the needle bed gap S
  • the end yarn connected to the stitch is located inside the needle bed gap S together with the stitch, a yarn length until the cutter 60 appears at a position where it can act becomes shorter in the up-and-down direction than in the horizontal direction.
  • the cutter 60 is not limited to being operated above the needle bed gap S, and may enter the inside of the needle bed gap S to cut the end yarn. With such a configuration, the end yarn remaining in the knitted fabric can be further shortened.
  • the blade is opened and closed along the longitudinal direction of an opening of the needle bed gap S to cut the end yarn in the closed state, but in a case where the end yarn extends at an angle close to horizontal, the scissors are less likely to act. As a result, the cutting inside the needle bed gap S is not possible, and the portion appearing above the needle bed gap S is cut, and the end yarn remaining in the knitted fabric K cannot be shortened.
  • the end yarn is cut with the end yarn bridged in the up-and-down direction between the catcher 30 and the first stitch, so that the end yarn can be cut in the vicinity of the stitch of the knitted fabric K and the end yarn remaining in the knitted fabric K can be shortened as compared with the case where the end yarn extends at an angle close to horizontal.
  • the cutter 60 can cut the end yarn at a position of 1 mm to 30 mm from the stitch, preferably at a position of 1 mm to 10 mm from the stitch, and more preferably at a position of 1 mm to 5 mm from the stitch.
  • the burden of post-processing after knitting can be reduced.
  • FIGS. 8A to 8D and 9A to 9C illustrate an example in which a knitted fabric formed in a horizontal stripe pattern is knitted with the red knitting yarn YR and the blue knitting yarn YB, and illustrate a scene in which the knitting is terminated with the blue knitting yarn YB and the blue knitting yarn YB is set out.
  • FIG. 8A illustrates a state in which the knitting is finished by the blue knitting yarn YB.
  • the yarn feeder 131 for feeding the blue knitting yarn YB is located on the right side of the knitted fabric K.
  • the left and right catchers 30 are located at the raised positions and are retracted with respect to the needle bed gap S. Note that the knitting of the unraveling prevention is preferably carried out at a knitting end portion.
  • the catcher 30 on the right side advances above the needle bed gap S.
  • the yarn feeder 131 is moved to the right of the carriage 120.
  • the catcher 30 on the right side moves from the lowered position to the raised position, and retreats with respect to the needle bed gap S to lift the blue knitting yarn YB upward.
  • the catcher 30 on the right side holds the end yarn above the needle bed gap S by hooking the end yarn in the lowered position and raising the end yarn to the raised position.
  • the carriage 120 moves within the knitting width such that the catcher 30 on the right side is located at a position where the end yarn of the knitted fabric K extends in the up-and-down direction.
  • the catcher 30 holds the end yarn such that the end yarn between the last stitch and the catcher 30 extends in the up-and-down direction.
  • the suction device 160 sucks the end yarn while the gripper device 150 holds the end yarn, thereby applying tension to the blue knitting yarn YB.
  • the cutter 60 advances between the catcher 30 and the last stitch of the knitted fabric K above the needle bed gap S, and cuts the end yarn between the catcher 30 and the last stitch of the knitted fabric K. More specifically, the cutter 60 advances with respect to an upper side of the last stitch and cuts the end yarn with the catcher 30 at the raised position, similar to the time of yarn insertion illustrated in FIG. 7D . The end of the cut end yarn is sucked and removed by the suction device 160 and discharged to the outside.
  • the end yarn of the knitted fabric K generated at the time of yarn discharge can be treated.
  • a portion in the vicinity of the last stitch of the end yarn extending between the gripper device 150 and the last stitch of the knitted fabric K is lifted up by the catcher 30, and the end yarn is cut between the catcher 30 and the last stitch, whereby the end yarn can be cut near the knitted fabric K.
  • two end yarn processing devices 1 are disposed in the carriage 120, and different end yarn processing devices 1 are used at the time of yarn insertion and at the time of yarn discharge, respectively, but one end yarn processing device 1 may be disposed in the carriage 120, and the same end yarn processing device 1 may be used at the time of yarn insertion and at the time of yarn discharge.
  • a mechanism for exchanging the left and right positions of the end yarn processing device 1 is preferably disposed in order to cope with the start of knitting.
  • the end yarn processing device 1 is disposed in the carriage 120 and integrally moves with the carriage 120 in the longitudinal direction of the needle bed 110, but may move independently of the carriage 120. In the case of moving independently of the carriage 120, the end yarn processing device 1 may travel on the same rail as the carriage 120, or may move on another rail (yarn path rail 130 or the like) extending in parallel with the rail on which the carriage 120 moves. The same applies to the second to fourth embodiments described later.
  • the catcher 30 is configured to be movable up and down, and holds the end yarn above the needle bed gap S by hooking the end yarn in a state of being at the lowered position and moving to the raised position, but may not be configured to be movable up and down.
  • the end yarn may be held above the needle bed gap S by moving the yarn feeder 131 to pass the end yarn over the catcher 30 after the catcher 30 is advanced with respect to the needle bed gap S.
  • the cutter 60 cuts the end yarn on the downstream in the yarn supplying direction of the catcher 30, more specifically, between the catcher 30 and the stitches of the knitted fabric K, but the end yarn may be cut on the upstream in the yarn supplying direction of the catcher 30.
  • the end yarn processing device 1 according to the second embodiment is different from the end yarn processing device 1 according to the first embodiment in including a suction device 33 instead of the catcher 30 as means for holding the end yarn above the needle bed gap S.
  • a suction device 33 instead of the catcher 30 as means for holding the end yarn above the needle bed gap S.
  • the suction device 33 is provided above the needle bed gap S with a suction port 34 facing downward, and is configured to be able to suck air from the suction port 34.
  • the suction device 33 is configured to be reciprocable along the longitudinal direction of the needle bed 110, and is configured to be movable up and down with respect to the needle bed gap S.
  • the carriage 120 and the yarn feeder 131 move within the knitting width, and the stitches are knitted, for example, for several courses with the knitting needle 111 and the like.
  • the suction device 33 is lowered to a predetermined lowered position in a state of being located above the first stitch of the knitted fabric K, and sucks the red knitting yarn YR upward.
  • the suction device 33 may be lowered until the suction port 34 enters the inside of the needle bed gap S.
  • the suction port 34 at the lowered position is raised to a predetermined raised position in a state of sucking the red knitting yarn YR upward, so that the end yarn is held above the needle bed gap S.
  • the cutter 60 advances between the suction device 33 and the first stitch of the knitted fabric K above the needle bed gap S, and cuts the end yarn between the suction device 33 and the first stitch of the knitted fabric K. The cut end yarn is sucked and removed by the suction device 160, and is discharged to the outside by releasing the holding by the gripper device 150.
  • the end yarn of the knitted fabric K generated at the time of yarn insertion can be treated.
  • the end yarn can be cut near the knitted fabric K by moving the suction device 33 to immediately above the last stitch and holding the end yarn above the needle bed gap S by the suction device 33 also at the time of yarn discharge.
  • the suction device 33 by configuring to hold the end yarn using the suction device 33, complicated operation and restriction of the operation timing can be made unnecessary.
  • the end yarn processing device 1 according to the third embodiment is different from the end yarn processing device 1 according to the first embodiment in including a holding member 35 instead of the catcher 30.
  • the holding member 35 is configured not to move back and forth while moving up and down like the catcher 30 of the first embodiment, but to be movable back and forth without moving up and down.
  • the holding member 35 may include a drive source different from the carriage 120, and may be configured to be movable with the movement of the carriage 120.
  • the holding member 35 is located apart from the needle bed gap S above the needle bed gap S, and always holds the knitting yarn Y above the needle bed gap S.
  • a pressing member 36 is provided as a member that pushes down the knitting yarn Y toward the needle bed gap S.
  • the pressing member 36 is provided on the side of the holding member 35 and is formed to be vertically movable.
  • the pressing member 36 may be formed to linearly move up and down, or may be formed to move up and down by swinging in an arc shape. As illustrated in FIG. 12A , the pressing member 36 is located above the knitting yarn Y extending from the gripper device 150 to the yarn feeder 131.
  • the pressing member 36 When forming the stitches with the knitting needles 111, the pressing member 36 is lowered to a predetermined position to push down the knitting yarn Y toward the needle bed gap S as illustrated in FIG. 12B .
  • the pressing member 36 acts on the end yarn of the portion extending from the holding member 35 to the yarn feeder 131 to play a role of a displacement mechanism that displaces the end yarn to a position close to the needle bed gap S and a position away from the needle bed gap S.
  • the knitting yarn Y can be hooked by the knitting needles 111.
  • the cutter 60 configured to be able to advance and retreat with respect to the needle bed gap S advances with respect to the needle bed gap S with the pressing member 36 raised to a predetermined position, and the end yarn is cut between the holding member 35 and the stitch.
  • the holding member 35 is located away from the needle bed gap S, so that the end yarn can be easily cut, and the difficulty in knitting due to the end yarn being fed from above can be suppressed.
  • the holding member 35 and the pressing member 36 are configured as separate members, but a displacement mechanism that pushes down the knitting yarn Y toward the needle bed gap S may be integrally provided with a holding member 37 as in the holding member 37 illustrated in FIG. 13A and 13B .
  • the holding member 37 illustrated in FIG. 13A is formed in a bifurcated fork shape, and is provided so as to be spaced apart from the needle bed gap S above the needle bed gap S.
  • the holding member 37 is configured to be able to advance and retreat with respect to the needle bed gap S by moving forward and backward.
  • the holding member 37 includes a holding portion 38 and a pressing portion 39.
  • the holding portion 38 is formed so as to extend back and forth above the needle bed gap S, and is located below the knitting yarn Y extending from the gripper device 150 to the yarn feeder 131.
  • the pressing portion 39 is formed so as to extend in the substantially left-right direction from a middle portion in the longitudinal direction of the holding portion 38 on the front side of the knitting yarn Y, and to bend and extend backward beyond the knitting yarn Y and the needle bed gap S.
  • the pressing portion 39 is located above the knitting yarn Y extending from the gripper device 150 to the yarn feeder 131.
  • the holding member 37 When forming the stitches with the knitting needles 111, the holding member 37 is swung in the clockwise direction in front view to push down the knitting yarn Y toward the needle bed gap S by the pressing portion 39, as illustrated in FIG. 13B . Thus, the knitting yarn Y can be hooked by the knitting needles 111.
  • the holding member 37 When cutting the end yarn, the holding member 37 is swung counterclockwise in front view to return to the state illustrated in FIG. 13A , and the cutter 60 configured to be able to advance and retreat with respect to the needle bed gap S advances with respect to the needle bed gap S with the end yarn held above the needle bed gap S by the holding portion 38, and cuts the end yarn between the holding member 35 and the stitch.
  • the end yarn can be treated.
  • the end yarn processing device 1 according to the fourth embodiment is different from the end yarn processing device 1 according to the first embodiment in that a holding member 70 is disposed instead of the catcher 30 and a cutter 80 is disposed instead of the cutter 60, and the cutter 80 is accommodated in the holding member 70.
  • a holding member 70 is disposed instead of the catcher 30 and a cutter 80 is disposed instead of the cutter 60, and the cutter 80 is accommodated in the holding member 70.
  • the holding member 70 is configured by two upper and lower plate-shaped bodies, and the cutter 80 is accommodated in a space formed between the two plate-shaped bodies.
  • the cutter 80 is provided to be slidable back and forth.
  • a notch 71 having an arc shape in plan view is formed in a right portion of the holding member 70.
  • the knitting yarn Y from the gripper device 150 passes through the notch 71 from an upper side of the holding member 70 to extend over the first stitch of the knitted fabric K.
  • the cutter 80 can cut the end yarn accommodated in the notch 71 by a backward sliding operation.
  • the cutter 80 for cutting the end yarn is disposed in the holding member 70, so that the end yarn processing device 1 can be made compact.
  • the cutter 80 may be provided so as to slide on an upper surface or a lower surface of the holding member 70.
  • the upper surface of the holding member 70 is an example of a position upstream of the holding member 70 in the yarn supplying direction and adjacent to the holding member 70.
  • a shape of the notch 71 is arbitrary, and may be, for example, a rectangular shape in plan view. Since the notch 71 has a rectangular shape in plan view, the end yarn can be suppressed from escaping from the notch 71.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP23194349.9A 2022-08-31 2023-08-30 End yarn processing device and end yarn processing method Pending EP4332287A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2022138345A JP2024034234A (ja) 2022-08-31 2022-08-31 端糸処理装置及び端糸処理方法

Publications (1)

Publication Number Publication Date
EP4332287A1 true EP4332287A1 (en) 2024-03-06

Family

ID=87863400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23194349.9A Pending EP4332287A1 (en) 2022-08-31 2023-08-30 End yarn processing device and end yarn processing method

Country Status (4)

Country Link
EP (1) EP4332287A1 (ko)
JP (1) JP2024034234A (ko)
KR (1) KR20240031146A (ko)
CN (1) CN117626519A (ko)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08325901A (ja) * 1995-05-24 1996-12-10 Shima Seiki Mfg Ltd 横編機における編糸切断把持装置
JP4015980B2 (ja) 2003-09-19 2007-11-28 株式会社島精機製作所 横編機の端糸処理装置および方法
JP5160760B2 (ja) * 2006-10-06 2013-03-13 株式会社島精機製作所 端糸挿入装置
EP2241660B1 (en) * 2007-12-29 2014-01-01 Shima Seiki Mfg., Ltd Yarn-end treating device for flat-knitting machine
EP3901344A1 (en) * 2020-04-23 2021-10-27 Shima Seiki Mfg., Ltd. A flat knitting machine for insertion of an article

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127948A (ja) 1983-01-07 1984-07-23 Toyoda Autom Loom Works Ltd 鋳物砂処理用のマルチステツプ式注水装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08325901A (ja) * 1995-05-24 1996-12-10 Shima Seiki Mfg Ltd 横編機における編糸切断把持装置
JP4015980B2 (ja) 2003-09-19 2007-11-28 株式会社島精機製作所 横編機の端糸処理装置および方法
JP5160760B2 (ja) * 2006-10-06 2013-03-13 株式会社島精機製作所 端糸挿入装置
EP2241660B1 (en) * 2007-12-29 2014-01-01 Shima Seiki Mfg., Ltd Yarn-end treating device for flat-knitting machine
EP3901344A1 (en) * 2020-04-23 2021-10-27 Shima Seiki Mfg., Ltd. A flat knitting machine for insertion of an article

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CN117626519A (zh) 2024-03-01
KR20240031146A (ko) 2024-03-07
JP2024034234A (ja) 2024-03-13

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