EP1908868A1 - Kulierstrick- oder -wirkmaschine mit maschenpresser und verfahren zur steuerung derselben - Google Patents

Kulierstrick- oder -wirkmaschine mit maschenpresser und verfahren zur steuerung derselben Download PDF

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Publication number
EP1908868A1
EP1908868A1 EP06757232A EP06757232A EP1908868A1 EP 1908868 A1 EP1908868 A1 EP 1908868A1 EP 06757232 A EP06757232 A EP 06757232A EP 06757232 A EP06757232 A EP 06757232A EP 1908868 A1 EP1908868 A1 EP 1908868A1
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EP
European Patent Office
Prior art keywords
knitted fabric
knitting
carriage
yarn
interference
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Granted
Application number
EP06757232A
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English (en)
French (fr)
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EP1908868B1 (de
EP1908868A4 (de
Inventor
Mitsuo SHIMA SEIKI MANUFACTURING LIMITED KUBO
Manabu SHIMA SEIKI MANUFACTURING LIMITED YUI
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Shima Seiki Mfg Ltd
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Shima Seiki Mfg Ltd
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Publication of EP1908868A1 publication Critical patent/EP1908868A1/de
Publication of EP1908868A4 publication Critical patent/EP1908868A4/de
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Publication of EP1908868B1 publication Critical patent/EP1908868B1/de
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    • 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
    • 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
    • D04B15/88—Take-up or draw-off devices for knitting products
    • D04B15/90—Take-up or draw-off devices for knitting products for flat-bed knitting machines
    • 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
    • D04B15/94—Driving-gear not otherwise provided for
    • D04B15/96—Driving-gear not otherwise provided for in flat-bed knitting machines

Definitions

  • the present invention relates to a weft knitting machine provided with a knitted fabric presser that travels together with a carriage and that can switch a finger between a set position in which a knitted fabric is pressed and a reset position in which a knitted fabric is not pressed; and a method for controlling the same.
  • a stitch presser 1 as shown in Fig. 8A is used for pressing a knitted fabric 2 that is being knitted at a needle bed gap of a weft knitting machine as in Fig. 8B (see Japanese Examined Patent Publication JP-B2 3-66415 (1991 ) and Japanese Unexamined Patent Publication JP-A 6-158485 (1994 ), for example).
  • the stitch presser 1 is also referred to as a knitted fabric presser, is substantially L-shaped, and prevents the knitted fabric 2 from moving upward by pressing the knitted fabric as shown in Fig. 8B with a finger 1a that extends in the horizontal direction in Fig. 8A .
  • An arm 1b in the vertical direction in Fig. 8A is provided on the base end side of the finger 1a.
  • front and back needle beds 4a and 4b are opposed to each other in the shape of an inverted V with a needle bed gap 3 interposed therebetween as shown in Fig. 8B .
  • Such a weft knitting machine is also referred to as a V-bed weft knitting machine.
  • the front needle bed 4a and the back needle bed 4b extend in the direction perpendicular to the sheet of the drawing.
  • a large number of knitting needles 5a and 5b are provided along the longitudinal direction of the needle beds such that the knitting needles 5a and 5b can move reciprocating with respect to the needle bed gap 3.
  • Sinkers 6a and 6b are also provided between the knitting needles 5a and 5b on each of the needle beds 4a and 4b.
  • the knitting needles 5a and 5b move forward into the needle bed gap 3 and receive a knitting yarn at a hook on the tip end thereof, the knitting needles 5a and 5b pull the knitting yarn onto the needle bed 4a and 4b and form a needle loop of a stitch.
  • the sinkers 6a and 6b form a sinker loop between needle loops.
  • a needle loop and a sinker loop are alternately formed in a continuous manner to be a stitch row for each course, and thus the knitted fabric 7 is knitted in a lower portion of the needle bed gap 3.
  • Figs. 9A and 9B illustrate the basic configuration of the vicinity of the needle bed gap 3 in the V-bed weft knitting machine.
  • Fig. 9A is an enlarged view of a portion above the needle bed gap.
  • Fig. 9B is a view of the overall configuration of the vicinity of the needle bed gap 3.
  • a plurality of yarn guide rails 7a, 7b, and 7c span in the longitudinal direction of the needle beds 4a and 4b above the needle bed gap 3.
  • Each of the yarn guide rails 7a, 7b, and 7c is provided with one or a plurality of tracks on which one or a plurality of yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f for feeding knitting yarns for knitting the knitted fabric 2 can travel.
  • the yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f are also referred to as yarn feeders.
  • Yarn feeding ports 9a, 9b, 9c, 9d, 9e, and 9f for feeding knitting yarns to the knitting needles 5a and 5b are provided respectively under the yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f. As shown in Fig.
  • the yarn feeding ports 9a, 9b, 9c, 9d, 9e, and 9f converge in the vicinity of the center of the needle bed gap 3 such that a knitting yarn can be fed to both of the knitting needles 5a and 5b that move forward from the front and the back needle beds 4a and 4b into the needle bed gap 3.
  • the yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f that travel on mutually different tracks are positioned such that the yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f of the respective tracks are not brought into contact with each other, in order to avoid an obstacle in travel caused by interference between the yarn feeding ports 9a, 9b, 9c, 9d, 9e, and 9f.
  • Carriages 10a and 10b reciprocatingly travel in the longitudinal direction respectively on the front and the back needle beds 4a and 4b.
  • a needle selecting mechanism and a cam mechanism for selectively driving the knitting needles 5a and 5b for reciprocating movement with respect to the needle bed gap 3 are mounted on the carriages 10a and 10b.
  • a plurality of pairs of needle selecting mechanisms and cam mechanisms are mounted as systems for selectively driving the knitting needles 5a and 5b.
  • the carriages 10a and 10b on the front and the back needle beds 4a and 4b are coupled via a bridge 11 straddling the yarn guide rails 7a, 7b, and 7c, and reciprocatingly travel in a range including the knitting width of the knitted fabric 2.
  • the bridge 11 is provided with a mechanism for selectively bringing the yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f.
  • the carriages 10a and 10b and the knitting needles 5a and 5b operate automatically, based on preset knitting data.
  • a weft knitting machine also has been proposed that optimizes the stroke in which the carriages 10a and 10b travel, based on knitting data or the like (see Japanese Examined Patent Publication JP-B2 2627522 , for example).
  • the stitch presser 1 is mounted on either one of the carriages 10a and 10b.
  • the finger 1a of the stitch presser 1 presses the knitted fabric 2 formed between the knitting needles 5a and 5b on the front and the back needle beds 4a and 4b as shown in Fig. 8B in the needle bed gap 3 below the yarn feeding ports 9a, 9b, 9c, 9d, 9e, and 9f.
  • the carriages 10a and 10b are provided with a drive mechanism for the stitch presser 1.
  • the drive mechanism switches the position of the finger 1a by driving the arm 1b
  • the finger 1a provided in the stitch presser 1 presses the knitted fabric 2 at a portion in which the system mounted on the carriages 10a and 10b selectively drives the knitting needles 5a and 5b for a knitting operation or the vicinity thereof, and thus the stitch presser 1 is provided for each system.
  • the systems are mounted on mutually corresponding front and back positions of the carriages 10a and 10b that travel on the front and the back needle beds 4a and 4b.
  • the stitch presser 1 is mounted on either one of the front and the back carriages 10a and 10b.
  • the stitch presser 1 as shown in Fig. 8A has directionality.
  • the tip end of the finger 1a which is on the right in Fig. 8A , needs to be on the rear side in travel, and the arm 1b needs to be on the front side in travel. Accordingly, in order to enable the stitch presser 1 to be used in both of forward travel and backward travel of the carriages 10a and 10b, stitch pressers 1 for different directions need to be mounted on the front and the back carriages 10a and 10b. It should be noted that in JP-A 6-158485 , a stitch presser for forward travel and a stitch presser for backward travel are mounted on one carriage.
  • the stitch presser 1 as shown in JP-B2 3-66415 and JP-A 6-158485 can be moved at any timing between a set position in which the knitted fabric 2 is pressed and a reset position in which the knitted fabric 2 is not pressed, by providing a driving source such as a motor in the drive mechanism that is mounted on the carriages 10a and 10b.
  • the stitch presser 1 for an inverse direction is kept at the reset position.
  • the stitch presser 1 for a forward direction can be used for pressing the knitted fabric 2, by being kept at the set position.
  • the stitch presser 1 for the forward direction may be not used, by being kept at the reset position.
  • the stitch presser 1 in a case where the stitch presser 1 is used by being kept at the set position, the stitch presser 1 needs to be withdrawn to the reset position when the direction in which the carriages 10a and 10b travel is inverted to the inverse direction. Furthermore, in a case where the stitch presser 1 is to be used when the carriages 10a and 10b travel in the inverse direction, the stitch presser 1 for the inverse direction that has been kept at the reset position needs to be moved to the set position. The stitch presser 1 is switched in this manner between the set position and the reset position, when the carriages 10a and 10b pass to the outside of the knitting width of the knitted fabric 2 and the traveling direction is inverted.
  • Fig. 10 illustrates loci of movement of two stitch pressers, which is shown in Fig. 13 in JP-A 6-158485 .
  • the reference numerals are changed and a centerline 3a of the needle bed gap 3 is additionally shown.
  • a locus of the finger 1a of the stitch presser for one direction is indicated by 12a, 12b, 12c, 12d, and 12e
  • a locus of the finger 1a of the stitch presser 1 for the other direction is indicated by 13a, 13b, 13c, 13d, and 13e.
  • the set positions 12e and 13e of the fingers 1a are the same when the two stitch pressers 1 press the knitted fabric 2 inside the needle bed gap 3, but the reset positions 12a and 13a are different from each other.
  • the loci of movement of the fingers 1a are set so as not to interfere with each other. Furthermore, the loci of movement are set so as not to be brought into contact with the sinkers 6a and 6b on the needle beds 4a and 4b. Furthermore, the arms 1b in the set positions and the reset positions are set so as not to be brought into contact with the yarn feeding ports 9a, 9b, 9c, 9d, 9e, and 9f shown in Figs. 9A and 9B . In a case where the stitch pressers 1 for mutually different directions are respectively mounted on a pair of carriages 10a and 10b, the loci of movement are substantially symmetric with respect to the centerline 3a of the needle bed gap 3a.
  • centerline 3a is inclined for the sake of convenience of this description, the centerline 3a is basically in the vertical direction in an actual weft knitting machine.
  • the plurality of yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f are used in order to enable different knitting yarns to be switched.
  • a selecting mechanism provided on the bridge 11 selects the yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f that are to be used, even when the yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f that are to be used are put on standby outside the knitting width of the knitted fabric 2, the yarn carriers are preferably as close as possible thereto in order to shorten the stroke in which the carriages 10a and 10b travel. The reason for this is that a longer stroke in which the carriages 10a and 10b travel takes a longer time and lowers productivity.
  • the stitch presser 1 for the forward direction with respect to the direction in which the carriages 10a and 10b travel can be moved to the set position before entering a knitting end, and can be kept at the set position, according to the systems of the carriages 10a and 10b used for knitting a knitted fabric.
  • a reset operation of moving the stitch presser 1 at the set position to the reset position is started without considering the positions at which the yarn carriers 8a, 8b, 8c, 8d, 8e, and 8f stop at the knitting end.
  • the locus of movement of the stitch presser 1 as shown in Fig. 10 is inevitably overlapped with or brought close to the position of, for example, the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f of the yarn carrier 8a, 8b, 8c, 8d, 8e, or 8f, between the set positions 12e and 13e and the reset positions 12a and 13a.
  • the yarn feeding ports 9a, 9b, 9c, 9d, 9e, and 9f and the like are away from each other in the direction along the yarn guide rails 7a, 7b, and 7c, mechanical interference is not caused.
  • the yarn feeding port 9a, 9b, 9c, 9d, 9e, and 9f are on standby at a knitting end of the knitted fabric 2
  • the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f of the yarn carrier 8a, 8b, 8c, 8d, 8e, or 8f may be in a locus of movement of the finger 1a, and the finger 1a may be hooked on the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f.
  • the direction in which the carriages 10a and 10b travel may be inverted.
  • the finger 1a of the stitch presser 1 after the reset operation is hooked on the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f or the like even after the direction in which the carriages 10a and 10b travel has been inverted, the stitch presser 1 may be broken, or the finger 1a may be deformed even when the stitch presser 1 is not broken.
  • Whether or not the finger 1a of the stitch presser 1 is hooked on the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f can be detected by providing a sensor for detecting deformation of the finger 1a.
  • the finger 1a of the stitch presser 1 that is used is thin and elastically warped easily.
  • the finger 1a actually may be hooked on, for example, the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f of the yarn carrier 8a, 8b, 8c, 8d, 8e, or 8f.
  • the finger 1a Even when the finger 1a is not hooked, when the thin finger 1a is brought into contact with the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f, the finger 1a may be deformed. When the finger 1a is deformed or broken, the function of pressing the knitted fabric 2 cannot be fulfilled, the knitted fabric 2 or a knitting yarn is damaged, and the knitting is interrupted. Furthermore, even when the finger 1a is not brought into contact with the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f, in a state where there is a crossing yarn from the yarn feeding port 9a, 9b, 9c, 9d, 9e, or 9f to a point in the knitted fabric 2, the finger 1a may be caught by the crossing yarn.
  • An object of the invention is to provide a weft knitting machine provided with a knitted fabric presser in which at the time of switching the knitted fabric presser between a set position and a reset position, only when interference is caused with a yarn feeding member, a crossing yarn, or the like, the interference can be avoided to prevent knitting from being interrupted; and a method for controlling the same.
  • the invention provides a weft knitting machine provided with a knitted fabric presser that is mounted on a carriage for selectively causing knitting needles to perform a knitting operation while reciprocatingly traveling along a needle bed, and can switch a finger capable of pressing a knitted fabric that is being knitted, between a set position in which the knitted fabric is pressed and a reset position in which the knitted fabric is not pressed, during travel of the carriage, comprising:
  • control means performs an operation of switching the finger of the knitted fabric presser between the set position and the reset position, after the judgment means judges that a possibility of interference has been eliminated, and controls the carriage so as to extend the stroke in which the carriage travels, until the operation ends.
  • control means performs an operation of switching the finger of the knitted fabric presser between the set position and the reset position, at a position where the stitch presser passes to an outside of a knitting width of the knitted fabric, and controls the carriage so as to extend the stroke in which the carriage travels, until the judgment means judges that a possibility of interference has been eliminated.
  • a member that is judged by the judgment means as to whether or not interference is caused therewith is a yarn carrier that can be selectively brought by the carriage, and that feeds a knitting yarn from a yarn feeding port to a knitting needle performing a knitting operation when being brought by the carriage.
  • the yarn carrier having the yarn feeding port that is within the range of a predetermined distance from the yarn feeding port of another yarn carrier is judged by the judgment means as to whether or not interference is caused therewith.
  • the invention provides a method for controlling a weft knitting machine provided with a knitted fabric presser that is mounted on a carriage for selectively causing knitting needles to perform a knitting operation while reciprocatingly traveling along a needle bed, and can switch a finger capable of pressing a knitted fabric that is being knitted, between a set position in which the knitted fabric is pressed and a reset position in which the knitted fabric is not pressed, during travel of the carriage, comprising:
  • Fig. 1 illustrates the schematic configuration of a weft knitting machine 20 provided with a knitted fabric presser according to an embodiment of the invention.
  • a stitch presser 21, which is a knitted fabric presser, is set at a set position, and presses a knitted fabric 22 when the knitted fabric 22 is knitted in a lower portion of a needle bed gap 23, thereby preventing the knitted fabric 22 from moving upward.
  • the knitted fabric 22 is knitted by causing carriages 25 to reciprocatingly travel in the longitudinal direction on front and back needle beds 24 that are opposed to each other at the needle bed gap 23.
  • a system 26 such as a cam mechanism for selectively driving knitting needles on the needle bed 24 is mounted on the carriage 25.
  • a plurality of yarn guide rails 27 span above the needle bed gap 23.
  • One or a plurality of yarn carriers 28a and 28b can be brought by the carriage 25 and travel along each of the yarn guide rails 27.
  • Each of the yarn carriers 28a and 28b is provided with a yarn feeding port 29, and feed knitting yarns 30a and 30b are fed to knitting needles that are selectively driven by the system 26 for a knitting operation.
  • the yarn carriers 28a and 28b are selected by a selecting mechanism provided at a bridge 31 coupling between the carriages 25 that are respectively provided on the front and the back needle beds 24.
  • the knitting yarns 30a and 30b are fed to the yarn carriers 28a and 28b, from a cone 32 via an upper spring mechanism 33 and a side tension mechanism 34.
  • the knitting yarns 30a and 30b are selected by determining which one of the yarn carriers 28a and 28b guiding the knitting yarns 30a and 30b is to be brought by the carriage 25.
  • the yarn carriers 28a and 28b are selected by the carriage 25 based on knitting data that is given to a control apparatus 35.
  • the knitting data is stored in a storage portion 36 inside the control apparatus 35.
  • Fig. 1 illustrates a state in which the carriage 25 is traveling leftward toward a knitting end 22a on the left side in the knitted fabric 22 while bringing the yarn carrier 28a.
  • the yarn carrier 28b that was selected or that is to be selected in spite of not being selected in this course is on standby outside the knitting width of the knitted fabric 22, in the vicinity of the knitting end 22a.
  • the position at which the yarn carrier 28b is on standby is in the vicinity of a position where the yarn carrier 28b was released after being brought by the carriage 25', and this position is stored in the storage portion 36.
  • the carriage 25 is decelerated while performing a reset operation of switching the stitch presser 21 from the set position to the reset position, and after the carriage 25 stops and the traveling direction thereof is inverted, the next course is knitted.
  • the yarn carrier 28b is present in the vicinity of the knitting end 22a, there is a possibility of interference with the reset operation of the stitch presser 21.
  • the stroke in which the carriage 25 travels until the direction is inverted is extended, so that the interference is avoided.
  • Fig. 2 illustrates the details of a zone in which the position of, for example, a yarn carrier that may be interfered with is searched for during travel of the stitch presser 21.
  • the position for starting the operation is a position at which the rear end of a finger 21a of the stitch presser 21 passes by the knitting end 22a in Fig. 1.
  • Fig. 1 shows one pair of the systems 26 mounted on the carriages 25, but two or three pairs are often mounted.
  • the stitch presser 21 is provided on each system 26, and the position of each stitch presser 21 with respect to the center of each system 26, in particular, the positions of the finger 21a and an arm 21b, the position of the center of each system 26 on the carriage 25, and the like are stored as data in advance in the storage portion 36.
  • the time required to perform the reset operation of the stitch presser 21 is, for example, approximately 100 ms, and the reset operation is completed in this time.
  • a carrier searching zone from the position for starting the operation to the position for completing the operation is set assuming that the carriage 25 travels at the maximum speed during this time. It should be noted that the carrier searching zone has a length obtained by adding the length from the rear end of the finger 21a to the arm 21b of the stitch presser 21, to the zone from the position for starting the operation to the position for completing the operation.
  • Fig. 3 illustrates the conditions of a yarn carrier that may be interfered with.
  • Fig. 1 in a case where a single yarn carrier 28b is merely at rest, even when the yarn carrier 28b is interfered with in a locus of movement in the reset operation of the stitch presser 21, it is highly likely that the finger 21a of the stitch presser 21 is elastically warped to avoid interference with a yarn feeding port 29b of the yarn carrier 28b, and returns to the original state after the stitch presser 21 passes by the yarn feeding port 29b.
  • the yarn feeding port 29a or 29b of the yarn carrier 28a or 28b is more likely to be in a locus of movement of the finger 21a.
  • the finger 21a cannot avoid the yarn feeding port 29a or 29b of the yarn carrier 28a or 28b, and thus the finger 21a is hooked on the yarn feeding port 29a or 29b, and a large reaction force may be applied to the stitch presser 21.
  • a range of D [mm] from the center of the yarn feeding port 29a is set as a set zone for the overlap condition, and a zone of stopping errors ⁇ D is set in front and rear of the set zone, where ⁇ D is approximately 3 mm.
  • the yarn feeding port 29b other than the yarn feeding port 29a is at rest within the range ⁇ (D + ⁇ D) with respect to the center of the yarn feeding port 29a in the longitudinal direction of the needle bed 24, it is judged that the yarn carriers are overlapped, and there is a possibility of interference with the reset operation of the stitch presser 21.
  • Fig. 4 illustrates a manner in which when there is a possibility of interference between the reset operation of the stitch presser 21 and the yarn carrier 28, the interference is avoided.
  • the position for passing by an end portion of the knitting width such as the knitting end 22a in Fig. 1 is taken as the position for starting the operation.
  • the reset operation is started after the carriage 25 continuously travels to a position at which there is no possibility of interference with the yarn carrier 28. In other words, the position for starting the operation is shifted.
  • the carriage 25 After the carriage 25 passes by the position for starting the operation, the carriage 25 is decelerated and stopped, and then the direction thereof is inverted.
  • This position of the inversion is at a position obtained by extending the traveling stroke compared with a case in which the position for starting the operation is at the knitting end 22a, but the control apparatus 35 can optimize the stroke, based on the deceleration curve when controlling travel of the carriage 25.
  • the position for starting the operation is reached after a position at which there is a possibility of interference between the tip end of the finger 21a and the yarn feeding port 29 of the yarn carrier 28 that may be interfered with, and thus even when the carriage 25 travels not at the maximum speed but at low speed and is stopped soon, the stitch presser 21 and the yarn carrier 28 do not interfere with each other.
  • the position for starting the operation is determined in the following manner.
  • Fig. 5 schematically illustrates the procedure in which the control apparatus 35 performs control of the carriage 25, including avoidance of interference as in Fig. 4 .
  • step a0 the weft knitting machine 20 is started.
  • step a1 initial settings in each portion are performed.
  • step a2 knitting data of the knitted fabric 22 that is to be knitted is read. The knitting data is read into the storage portion 36, via a recording medium such as various disks, or via data communication using a LAN (local area network) or the like.
  • step a3 preparation is performed for a course that is to be knitted next.
  • the knitted fabric 22 can be knitted for a plurality of courses, using the plurality of systems 26 in travel of the carriage 25 for one course.
  • step a4 it is judged whether or not the next course is the final course. In a case where it is judged that the next course is not the final course, in step a5, it is judged based on the knitting data whether or not the stitch presser 21 is used in the current course. In a case where it is judged that the stitch presser 21 is used, in the next course, the reset operation needs to be performed for the stitch presser 21 that is being used in the current course. In a case where the stitch presser 21 is used in step a5, carrier search as shown in Fig. 2 is performed in step a6. In a case where the results of the carrier search show that there is a possibility of interference as shown in Fig.
  • step a7 it is judged in step a7 that a carrier that is to be interfered with is present.
  • step a7 a carrier that is to be interfered with is present
  • the position for starting the operation is shifted in step a8, and the procedure returns to step a4. Subsequently, the position for starting the operation is repeatedly shifted until the yarn carrier 28 that may be interfered with is not detected.
  • step a5 In a case where it is judged in step a5 that the stitch presser 21 is not used, or in a case where it is judged in step a7 that there is no yarn carrier that may be interfered with, the procedure proceeds to step a9, where the position of the inversion is determined with reference to the position for starting the operation, and the procedure returns to step a4. In a case where it is judged in step a4 that the course is the final course, the procedure ends in step a10.
  • Fig. 6 illustrates a manner in which interference is avoided in another embodiment of the invention.
  • the position for starting the operation is set at a knitting end.
  • the stroke in which the carriage 25 travels is extended until the rear end of the finger 21a of the stitch presser 21 passes by the position of the yarn feeding port 29 of the yarn carrier 28 that may be interfered with.
  • the interference is cancelled when the rear end of the finger 21a is removed from the interference by extending the traveling stroke.
  • the stroke is extended to the position at which the rear end of the finger 21a of the stitch presser 21 passes by the position away from the center of the yarn feeding port 29b by the set zone for the interference condition.
  • the set zone for the interference condition is, for example, the range in which the yarn feeding port 29b is present.
  • Fig. 7 schematically illustrates the procedure in which the control apparatus 35 performs control of the carriage 25, including avoidance of interference as in Fig. 6 .
  • Steps b0 to b10, except for step b8, are respectively similar to steps a0 to a10 in Fig. 5 , except for step a8.
  • the stroke is extended in step b8 as shown in Fig. 6 , the position of the inversion is shifted to a position obtained by extending the stroke, and then the procedure proceeds to step b9.
  • knitting is more likely to be interrupted in a case where the plurality of yarn carriers 28a and 28b are overlapped as shown in Fig. 3 .
  • the position at which the front end of the finger 21a of the stitch presser 21 is away to the outer side, by the predetermined set zone for the interference condition, from the center of the yarn feeding port 29 of the yarn carrier 28 farthest from the position for starting the operation is taken as the position at which the stitch presser 21 passes.
  • a knitting yarn from the yarn carrier 28 or a gripper may be continued as a crossing yarn from the knitting end 22a of the knitted fabric 22 to the end portion of the needle bed 24.
  • the stitch presser 21 may interfere with the crossing yarn.
  • the height of the crossing yarn varies in accordance with the position, and there is a possibility of interference in a range in which the varying height matches a locus of movement of the stitch presser 21.
  • a crossing yarn from the yarn carrier 28 that is at rest may be hooked on and caught by the finger 21a in the reset operation of the stitch presser 21, and the carriage 25 may be turned in a state where the crossing yarn is still caught. Interference between a crossing yarn and the stitch presser 21 also can be judged based on the knitting data.
  • an end yarn inserting apparatus and the like may be arranged in the vicinity of the knitting end 22a. Interference with a component constituting the end yarn inserting apparatus and the like or with a component relating to yarn feeding such as a gripper may be caused also when the stitch presser 21 performs the set operation from the reset position to the set position. Also when these components are detected, interference can be avoided by performing an operation as in the case of the yarn carrier 28.
  • the knitted fabric presser that is the stitch presser 21 is mounted on the carriage 25 for selectively causing knitting needles to perform a knitting operation while reciprocatingly traveling along the needle bed 24, and can switch the finger 21a capable of pressing the knitted fabric 22 that is being knitted, between the set position in which the knitted fabric 22 is pressed and the reset position in which the knitted fabric is not pressed, during the travel of the carriage 25.
  • the storage portion 36 functions as judgment means, and judges the possibility of mechanical interference with movement of the finger 21a of the knitted fabric presser between the set position and the reset position.
  • the control apparatus 35 functions as control means and controls reciprocating travel of the carriage 25 based on the knitting data of the knitted fabric 22.
  • the judgment means judges the possibility of mechanical interference in a locus of movement of the finger 21a, and thus it is possible to know the possibility of mechanical interference.
  • the control means performs control so as to avoid the interference, by extending the stroke in which the carriage 25 travels.
  • the storage portion 36 functions as the judgment means for judging whether or not there is a possibility of interference. However, the judgment may be performed, not based on stored data, but based on actually detected results, for example, by providing the carriage 25 with a sensor for ultrasonically or optically detecting whether or not there is an obstacle. Furthermore, the judgment means may judge the possibility of interference in a batch process as a simulation before knitting of the knitted fabric 22 is actually started.
  • the position at which the reset operation of the stitch presser 21 is performed is not limited to the knitting end 22a of the knitted fabric 22, and may be judged for each knitting area of each system in a knitting course of the knitted fabric 22.
  • the interference can be avoided by extending the stroke in which the carriage 25 travels.
  • the stroke in which the carriage travels can be extended such that interference is not caused with the movement of the finger.
  • the interference can be avoided to prevent knitting from being interrupted.
  • the knitted fabric presser is switched between the set position and the reset position after the possibility of interference has been eliminated, and thus interference during the switching can be reliably avoided.
  • the stroke in which the carriage travels is extended until the possibility of interference has been eliminated.
  • the direction of the carriage is inverted, interference with the knitted fabric presser can be cancelled.
  • the stroke in which the carriage travels is extended until the possibility of interference caused by movement of the knitted fabric presser is eliminated.
  • interference can be avoided to prevent knitting of the knitted fabric from being interrupted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP06757232.1A 2005-06-10 2006-06-09 Kulierstrick- oder -wirkmaschine mit maschenpresser und verfahren zur steuerung derselben Active EP1908868B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005171060 2005-06-10
PCT/JP2006/311659 WO2006132376A1 (ja) 2005-06-10 2006-06-09 編地プレッサを備える横編機およびその制御方法

Publications (3)

Publication Number Publication Date
EP1908868A1 true EP1908868A1 (de) 2008-04-09
EP1908868A4 EP1908868A4 (de) 2012-08-15
EP1908868B1 EP1908868B1 (de) 2013-09-04

Family

ID=37498570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06757232.1A Active EP1908868B1 (de) 2005-06-10 2006-06-09 Kulierstrick- oder -wirkmaschine mit maschenpresser und verfahren zur steuerung derselben

Country Status (4)

Country Link
EP (1) EP1908868B1 (de)
JP (1) JP4977603B2 (de)
CN (1) CN101194060B (de)
WO (1) WO2006132376A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101498445B1 (ko) * 2012-09-24 2015-03-04 가부시키가이샤 시마세이키 세이사쿠쇼 스티치 프레서를 구비한 횡편기 및 그 제어방법
KR200477296Y1 (ko) * 2011-01-24 2015-05-28 가부시키가이샤 시마세이키 세이사쿠쇼 횡편기

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597548A1 (de) * 1992-11-09 1994-05-18 SHIMA SEIKI MFG., Ltd. Mascheneinstreicher für Flachstrickmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57183451A (en) * 1981-04-28 1982-11-11 Shima Idea Center Knitted cloth press apparatus in v bed traverse knitting machine
DE3702050A1 (de) * 1987-01-24 1988-08-04 Stoll & Co H Flachstrickmaschine mit datenverarbeitungseinrichtung
JPH038841A (ja) * 1989-06-02 1991-01-16 Shima Seiki Seisakusho:Kk Ｖベツド横編機における編地プレツサー
JP3066415B2 (ja) * 1990-05-18 2000-07-17 株式会社ケイオウエス 治療装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597548A1 (de) * 1992-11-09 1994-05-18 SHIMA SEIKI MFG., Ltd. Mascheneinstreicher für Flachstrickmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006132376A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200477296Y1 (ko) * 2011-01-24 2015-05-28 가부시키가이샤 시마세이키 세이사쿠쇼 횡편기
KR101498445B1 (ko) * 2012-09-24 2015-03-04 가부시키가이샤 시마세이키 세이사쿠쇼 스티치 프레서를 구비한 횡편기 및 그 제어방법

Also Published As

Publication number Publication date
JPWO2006132376A1 (ja) 2009-01-08
EP1908868B1 (de) 2013-09-04
CN101194060A (zh) 2008-06-04
EP1908868A4 (de) 2012-08-15
WO2006132376A1 (ja) 2006-12-14
JP4977603B2 (ja) 2012-07-18
CN101194060B (zh) 2010-10-27

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