EP3540103B1 - Draw texturing machine - Google Patents

Draw texturing machine Download PDF

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Publication number
EP3540103B1
EP3540103B1 EP19157701.4A EP19157701A EP3540103B1 EP 3540103 B1 EP3540103 B1 EP 3540103B1 EP 19157701 A EP19157701 A EP 19157701A EP 3540103 B1 EP3540103 B1 EP 3540103B1
Authority
EP
European Patent Office
Prior art keywords
pin
yarn
rotation number
tension
unit
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.)
Active
Application number
EP19157701.4A
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German (de)
English (en)
French (fr)
Other versions
EP3540103A1 (en
Inventor
Hidekazu Chikada
Yoshimitsu Demizu
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.)
TMT Machinery Inc
Original Assignee
TMT Machinery Inc
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Filing date
Publication date
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Publication of EP3540103A1 publication Critical patent/EP3540103A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/20—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to excessive tension or irregular operation of apparatus
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/06—Spindles

Definitions

  • the present invention relates to a draw texturing machine provided with a pin-type twisting unit.
  • JP 2002-69763 A discloses a pin-type twisting unit (pin-twister-type false-twisting device in JP 2002-69763 A ) which twists a yarn running inside a rotating pin (spinner in JP 2002-69763 A ).
  • pin-type twisting unit rollers are attached to two rotational shafts, respectively, and a cylindrical pin is retained by magnet while being in contact with the circumferential surfaces of the rollers.
  • the rotational shafts is rotationally driven by a motor, the pin in contact with the rollers rotates about the shaft, with the result that the yarn running inside the pin is twisted.
  • JP S50-25839 A recites a motor in which the rotation number is switchable in stages ( FIG. 1 to FIG. 5 ) and a motor in which the rotation number is changeable in a stepless manner (i.e., continuously) ( FIG. 6 ).
  • the motor of JP S50-25839 A in which the rotation number is switchable in stages plural set values are fixed and are not changeable at will. Changes in types and production conditions of a yarn cannot therefore be properly handled, and hence the motor lacks versatility. Meanwhile, when a motor in which the rotation number is changeable in stepless is employed, an operator is required to adjust the rotation number.
  • US 3 392 519 A is related to a draw texturing machine, in which a rotational speed of a pin is maintained at a predetermined speed determined in advance. This also applies to US 3 662 531 A , in which a torque is imparted to the pin by an auxiliary induction motor, so that the rotational speed of the pin is kept at a predetermined speed.
  • an object of the present invention is to improve versatility and to facilitate yarn threading irrespective of the proficiency of an operator, in a draw texturing machine including a pin-type twisting unit.
  • the present invention relates to a draw texturing machine including: a pin-type twisting unit which includes a cylindrical pin retained while being in contact with circumferential surfaces of rollers attached to two rotational shafts, respectively, and which is configured to twist a yarn running inside the pin by rotating the pin by rotationally driving one of the two rotational shafts by a motor; a setting unit which is configured to set, in regard to a rotation number of the pin, set values regarding at least a high rotation number which is a rotation number in yarn production and a low rotation number which is smaller than the high rotation number; and an operation unit which is provided to switch the rotation number of the pin between the high rotation number and the low rotation number.
  • the setting unit is provided for setting the set values regarding the high rotation number and the low rotation number
  • the rotation number of the pin (motor) can be changed at will by using the setting unit. It is therefore possible to suitably handle changes in types and production conditions of a yarn.
  • the rotation number of the pin (motor) is, by the operation unit, switchable between the high rotation number and the low rotation number which are set in advance, fine adjustment of the rotation number by the operator is unnecessary.
  • the draw texturing machine has improved versatility, and makes it possible to perform yarn threading irrespective of the proficiency of the operator.
  • the present invention is preferably arranged such that acceleration of the pin is settable by using the setting unit.
  • the present invention is preferably arranged such that the acceleration of the pin is set at 80,000rpm/s or less.
  • occurrence of yarn breakage at the time of acceleration of the pin is suitably restrained when the acceleration of the pin is about 80,000rpm/s or less.
  • the present invention is preferably arranged such that the low rotation number is arranged to be equal to or smaller than a half of the high rotation number.
  • the low rotation number is arranged to be equal to or smaller than 1/2 of the high rotation number, the number of twists of the yarn in low-speed rotation is small and yarn shaking is restrained, with the result that yarn threading can be suitably performed.
  • the present invention is preferably arranged such that, the rotation number of the pin is switched in order from a low rotation number to a high rotation number among rotation numbers corresponding to set values set by the setting unit, each time the operation unit is operated.
  • the pin is switched, for example, from the stopped state to the low rotation number and then to the high rotation number, as the operation unit is operated in accordance with the progress of the yarn threading process. It is therefore possible to eliminate mistakes such as erroneous swift acceleration of the pin from the stopped state to the high rotation number.
  • the present invention is preferably arranged such that, the rotational direction of at least one of the rotational shafts rotationally driven by the motor is identical with a direction in which the pin is pressed into a gap between the rollers attached to the respective two rotational shafts.
  • This arrangement makes it possible to prevent the pin from moving away from the roller attached to the rotational shaft rotationally driven by the motor, with the result that the power of the motor is certainly transmitted to the pin via the roller.
  • the rotation number of the pin is therefore finely controllable.
  • the draw texturing machine includes: a tension sensor which is provided downstream in a yarn running direction of the pin-type twisting unit and is configured to measure tension of the yarn; and a control unit configured to execute predetermined control based on the tension detected by the tension sensor.
  • the tension of the yarn may be rapidly changed and yarn breakage may occur. It is possible to suitably perform the yarn threading process while restraining the yarn breakage, by properly executing the predetermined control based on the tension of the yarn.
  • the present invention is preferably arranged such that, in connection with the tension of the yarn, predetermined first tension is set as a set value regarding the low rotation number, and the control unit stops acceleration of the motor when the tension measured by the tension sensor is decreased to the first tension while the pin is accelerating from a stopped state.
  • the low rotation number can be set based on the tension of the yarn in place of the rotation number.
  • the rotation number when the tension of the yarn is decreased to the first tension is used as the low rotation number. If the first tension is arranged to be sufficiently low, the occurrence of yarn breakage is restrained even if yarn threading to the feed rollers is performed in low-speed rotation and the tension is rapidly increased.
  • the draw texturing machine further includes a notification unit which is switchable to a notification state of notifying predetermined information to an operator, the control unit switching the notification unit to the notification state when the tension measured by the tension sensor is decreased to the first tension while the pin is accelerating from the stopped state.
  • the operator is able to swiftly perform the yarn threading process.
  • the draw texturing machine further includes a notification unit which is switchable to a notification state of notifying predetermined information to an operator, regarding the tension of the yarn, predetermined second tension being set, and the control unit switching the notification unit to the notification state when the tension measured by the tension sensor is decreased to the second tension while the pin is accelerating from the low rotation number.
  • the present invention is preferably arranged such that the control unit stops acceleration of the motor when the tension measured by the tension sensor is decreased to the second tension while the pin is accelerating from the low rotation number.
  • the rotation number of the motor is maintained at the rotation number when the tension of the yarn is decreased to the second tension, it is possible to perform yarn threading in a state in which the number of twists of the yarn is constant and stable.
  • FIG. 1 is a schematic diagram illustrating the structure of a draw texturing machine 1 of the embodiment of the present invention.
  • the draw texturing machine 1 includes a yarn supplying unit 2 configured to supply yarns Y, a processing part 3 configured to false-twist the yarns Y supplied from the yarn supplying unit 2, and a winding unit 4 configured to wind the yarns Y false-twisted by the processing part 3 so as to form packages P.
  • the yarn supplying unit 2 includes a creel stand 10 retaining yarn supply packages Q, and supplies the yarns Y to the processing part 3.
  • the following members are provided in this order from the upstream in the yarn running direction along a yarn path: first feed rollers 11; a twist-stopping guide 12; a first heater 13; a cooler 14; a pin-type twisting unit 15; second feed rollers 16; an interlacing device 17; third feed rollers 18; a second heater 19; and fourth feed rollers 20.
  • the winding unit 4 winds, by winding devices 21, the yarns Y false-twisted by the processing part 3, so as to form packages P.
  • the draw texturing machine 1 includes a main base 5 and a winding base 6 which are provided to oppose each other and to be spaced apart from each other in the left-right direction in FIG. 1 (hereinafter, the base width direction).
  • the main base 5 and the winding base 6 extend in the direction orthogonal to the plane of FIG. 1 (hereinafter, the frame longitudinal direction).
  • An upper part of the main base 5 is connected to an upper part of the winding base 6 by a supporting frame 7.
  • the apparatuses constituting the processing part 3 are mainly attached to the main base 5 and the supporting frame 7.
  • the main base 5, the winding base 6, and the supporting frame 7 form a working space 8.
  • the main base 5, the winding base 6, and the supporting frame 7 are provided to surround the working space 8, and the yarns Y are arranged to run mainly around the working space 8.
  • An operator performs operations such as yarn threading in the working space 8.
  • the draw texturing machine 1 includes units which are termed spans and each of which includes a pair of the main base 5 and the winding base 6 opposing each other.
  • processing units which are also termed spindles
  • yarn paths are formed to pass the devices constituting the processing part 3 are lined up in the base longitudinal direction.
  • yarns Y running while being lined up in the base longitudinal direction can be simultaneously false-twisted.
  • the spans are provided in a left - right symmetrical manner in the base width direction, with the main base 5 being at the center. (The main base 5 is shared between the left spans and the right spans.) Furthermore, plural spans are provided in the base longitudinal direction. In FIG. 1 , the left spans are not shown.
  • the first feed rollers 11 are rollers for supplying the yarn Y from the yarn supplying unit 2 to the first heater 13.
  • the first feed rollers 11 are provided at an upper part of the winding base 6.
  • the first feed rollers 11 include a drive roller and a driven roller. As the drive roller is rotationally driven while the yarn Y is sandwiched between the drive roller and the driven roller, the yarn Y is fed to the downstream side in the yarn running direction. In one span, the drive rollers are connected to a shared drive shaft.
  • Each driven roller is switchable between a state in which the driven roller is in contact with the corresponding drive roller (i.e., a state of sandwiching and feeding the yarn Y) and a state in which the driven roller is separated from the drive roller (i.e., a state in which yarn threading is possible), by a lever operation by the operator, for example.
  • the second feed rollers 16, the third feed rollers 18, and the fourth feed rollers 20 are similarly arranged.
  • the twist-stopping guide 12 is provided to prevent twist of the yarn Y formed by the pin-type twisting unit 15 from being propagated to the upstream in the yarn running direction of the twist-stopping guide 12.
  • the twist-stopping guide 12 is provided between the first feed roller 11 and the first heater 13 with respect to the yarn running direction.
  • the twist-stopping guide 12 is arranged to be movable between a yarn threading position (dotted line in FIG. 1 ) at a lower end portion of a guide rail 22 and an operation position (full line in FIG. 1 ) at an upper end portion of the guide rail 22, along the guide rail 22 extending in the up-down direction.
  • the twist-stopping guide 12 is attached to an unillustrated member termed shifter, and as the shifter is moved along the guide rail 22 by an unillustrated cylinder, the twist-stopping guide 12 is moved.
  • shifter an unillustrated member
  • the twist-stopping guide 12 is moved.
  • the first heater 13 is configured to heat the yarn Y twisted by the pin-type twisting unit 15.
  • the first heater 13 is attached to an upper end portion of the supporting frame 7.
  • the cooler 14 is configured to cool the yarn Y heated by the first heater 13.
  • the cooler 14 is provided between the first heater 13 and the pin-type twisting unit 15 in the yarn running direction.
  • the pin-type twisting unit 15 is configured to twist the yarn Y.
  • the pin-type twisting unit 15 is provided at an upper part of the main base 5.
  • the pin-type twisting unit 15 will be detailed later.
  • the second feed rollers 16 are rollers for sending the yarn Y twisted by the pin-type twisting unit 15 toward the interlacing device 17.
  • the second feed rollers 16 are provided below the pin-type twisting unit 15 in the main base 5.
  • the conveyance speed of conveying the yarn Y by the second feed rollers 16 is higher than the conveyance speed of conveying the yarn Y by the first feed rollers 11.
  • the yarn Y is therefore drawn between the first feed rollers 11 and the second feed rollers 16.
  • the interlacing device 17 is configured to interlace the yarn Y by injecting air thereto.
  • the interlacing device 17 is provided below the second feed rollers 16 in the main base 5.
  • the third feed rollers 18 are rollers for sending the yarn Y interlaced by the interlacing device 17 toward the second heater 19.
  • the third feed rollers 18 are provided below the interlacing device 17 in the main base 5.
  • the conveyance speed of conveying the yarn Y by the third feed rollers 18 is lower than the conveyance speed of conveying the yarn Y by the second feed rollers 16.
  • the yarn Y is therefore relaxed between the third feed rollers 18 and the second feed rollers 16.
  • the second heater 19 is configured to heat the yarn Y supplied from the third feed rollers 18.
  • the second heater 19 is provided below the third feed rollers 18 in the main base 5.
  • the fourth feed rollers 20 are provided to feed the yarn Y thermally treated by the second heater 19 toward the winding device 21.
  • the fourth feed rollers 20 are provided at a lower part of the winding base 6.
  • the conveyance speed of conveying the yarn Y by the fourth feed rollers 20 is lower than the conveyance speed of conveying the yarn Y by the third feed rollers 18.
  • the yarn Y is therefore relaxed between the third feed rollers 18 and the fourth feed rollers 20.
  • the yarn Y drawn between the first feed rollers 11 and the second feed rollers 16 is twisted by the pin-type twisting unit 15.
  • the twist formed by the pin-type twisting unit 15 is propagated to the twist-stopping guide 12 but is not propagated to the upstream in the yarn running direction of the twist-stopping guide 12.
  • the yarn Y drawn and twisted in this way is heated by the first heater 13 and are then cooled by the cooler 14 and thermally set.
  • the yarn Y having passed the pin-type twisting unit 15 is unwound before the yarn Y reaches the second feed rollers 16.
  • the twist of each yarn Y is thermally fixed as described above. Each of the filaments therefore maintains a wavy false-twisted state.
  • interlacing is performed by the interlacing device 17, and the yarn Y thermally set by the second heater 19 is wound by the winding device 21.
  • the draw texturing machine 1 of the present embodiment further includes a cutter 23, a tension sensor 24, a suction unit 25, and a yarn breakage sensor 26 which are provided on the yarn path.
  • the cutter 23 is provided upstream in the yarn running direction of the first feed rollers 11 and cuts the yarn Y.
  • the tension sensor 24 is provided downstream in the yarn running direction of the pin-type twisting unit 15 and is configured to measure the tension of the twisted yarn Y.
  • the suction unit 25 is provided below the third feed rollers 18 in the main base 5, and is used for temporarily sucking and retaining the yarn Y during a yarn threading process.
  • the yarn breakage sensor 26 is provided downstream in the yarn running direction of the fourth feed rollers 20 and is configured to detect yarn breakage by detecting the existence of the yarn Y. The positions of these devices are not limited to these described positions.
  • a notification unit 27 is provided at an upper part of the main base 5.
  • the notification unit 27 of the present embodiment is constituted by a lamp. As the state of the lamp is switched to a turn-on state or a flickering state (notification state) in a predetermined case, the operator is notified of predetermined information.
  • the arrangement of the notification unit 27 is not limited to this. The operator may be notified of predetermined information by audio from a speaker or a text displayed on a screen, for example.
  • FIG. 2 is a block diagram illustrating an electric structure of the draw texturing machine 1.
  • the draw texturing machine 1 includes a control unit 30 which controls operations of devices of processing units.
  • FIG. 2 shows the devices of only a processing unit A, and processing unit B and other processing units are not detailed.
  • Output signals from the tension sensor 24 and the yarn breakage sensor 26 are sent to the control unit 30.
  • the control unit 30 controls operations of the cutter 23, the notification unit 27, and a later-described motor 54 of the pin-type twisting unit 15.
  • the motor 54 is controllable by the control unit 30 and is switchable by the operator by means of an operation unit 32.
  • a setting unit 31 by which the operator inputs setting values to the control unit 30 is connected to the control unit 30.
  • the setting unit 31 may be formed of, for example, a touch panel, or may be formed of a keyboard, etc.
  • FIG. 3 is a schematic diagram of the pin-type twisting unit 15.
  • FIG. 4 shows the pin-type twisting unit 15 in the direction IV in FIG. 3 .
  • the pin-type twisting unit 15 is configured to twist the yarn Y running in a pin 41 as the cylindrical pin 41 rotates about the axis. In FIG. 3 , the yarn Y runs upward from below.
  • FIG. 4 does not show a guide member 52.
  • the pin-type twisting unit 15 includes two rotational shafts 43 and 44 which are rotatably supported by a supporter 42 via unillustrated bearings.
  • Two rollers 45 and 46 separated from each other in the axial direction are attached to the rotational shaft 43.
  • Two rollers 47 and 48 separated from each other in the axial direction are attached to the rotational shaft 44.
  • the roller 45 and the roller 47 are at the same position in the axial direction, and are slightly separated from each other so as not to be in contact with each other, as shown in FIG. 4 .
  • the positional relationship between the roller 46 and the roller 48 is identical with the positional relationship between the roller 45 and the roller 47.
  • the rotational shaft 43 is rotationally driven about the axis by power transmitted from the motor 54.
  • the pin 41 is a cylindrical member extending in the axial direction.
  • the yarn Y runs in the pin 41.
  • a magnetic portion 41a is formed to oppose later-described magnets 49 and 50.
  • a wound portion 41b is internally fixed to extend in the radial direction.
  • the yarn Y is wound once on the wound portion 41b. As the pin 41 rotates about the axis, the yarn Y is twisted.
  • the magnet 49 is provided between the roller 45 and the roller 46 in the axial direction.
  • the magnet 50 is provided between the roller 47 and the roller 48 in the axial direction.
  • the magnets 49 and 50 are fixed to the supporter 42 via a bracket 51 (see FIG. 4 ).
  • the pin 41 is inserted into the gap between the rollers 45 and 47 (46 and 48) so that the magnetic portion 41a of the pin 41 opposes the magnets 49 and 50, the pin 41 is retained by the magnets 49 and 50 as shown in FIG. 4 .
  • the pin 41 is retained by the magnets 49 and 50 while the pin 41 is sandwiched between the rollers 45 and 47 (46 and 48) and is in contact with the circumferential surfaces of the rollers 45 and 47 (46 and 48).
  • the pin 41 is not mechanically fixed to another member, and is retained only by the magnet forces of the magnets 49 and 50 and the friction force with the circumferential surfaces of the rollers 45 to 48.
  • a ring-shaped guide member 52 is provided upstream of the pin 41 in the yarn running direction.
  • the guide member 52 is fixed to the supporter 42 via an unillustrated bracket.
  • a pipe-shaped guide member 53 is provided downstream in the yarn running direction of the pin 41.
  • the guide member 53 is directly fixed to the supporter 42.
  • the shape and way of fixation of each of the guide members 52 and 53 are not limited to those described above, and may be suitably changed.
  • the rotational direction of the rotation shaft 43 rotationally driven by the power transmitted from the motor 54 is preferably identical with a direction in which the pin 41 is pressed into the gap between the rollers 45 and 47 (46 and 48) attached to the respective rotation shafts 43 and 44. This prevents the pin 41 from moving away from the roller 45 (46), and the power of the motor 54 is certainly transmitted to the pin 41 via the roller 45 (46) .
  • the twist of the yarn Y is either S twist or Z twist. These two ways are opposite to each other in terms of the direction of twist.
  • the direction of twist is switched, the target of the power of the motor 54 is switched from the rotational shaft 43 to the rotational shaft 44.
  • the motor 54 may be arranged to rotate positively and negatively, and the rotational direction of the pin 41 may be changed to switch the direction of twist of the yarn Y, by switching the rotational direction of the rotational shafts 43 and 44.
  • Set values (related to the low rotation number, the high rotation number, and the acceleration of the pin 41) can be set at will by the operator by using the setting unit 31 (see FIG. 2 ).
  • the pin 41 is arranged so that the low rotation number is 160,000rpm, the high rotation number is 800,000rpm, and the acceleration is 10,000 to 15,000rpm/s.
  • These set values are suitably changeable by using the setting unit 31.
  • Each set value set by the setting unit 31 is input to the control unit 30 and is input to the controller of the motor 54, too.
  • the control unit 30 controls the motor 54 with reference to the set values input by the setting unit 31.
  • the operation unit 32 (see FIG. 1 and FIG. 2 ) is provided in the vicinity of the pin-type twisting unit 15 in the main base 5.
  • the operation units 32 are lined up in the base longitudinal direction.
  • the operation unit 32 of the present embodiment is constituted by a singe button.
  • the operation unit 32 may not be the button, and may be constituted by a lever or a dial, for example.
  • the operation unit 32 is operated once (i.e., the button is pressed once) when the pin 41 (motor 54) is in a stopped state, the pin 41 (motor 54) accelerates until reaching the low rotation number.
  • the pin 41 (motor 54) accelerates until reaching the high rotation number.
  • the pin 41 (motor 54) returns to the stopped state.
  • FIG. 5 is a flowchart showing the steps of the yarn threading process.
  • FIG. 6 is a graph showing the transition of the rotation number of the pin 41 of the pin-type twisting units 15.
  • FIGs. 7(a) and 7(b) and FIGs. 8(a) and 8(b) are schematic diagrams of the steps of the yarn threading process.
  • FIG. 6 shows an example of timings to execute the steps shown in FIG. 5 , and indicates by a dotted line the transition of the tension of the yarn Y.
  • the operator threads the yarn Y pulled out from a yarn supply package Q to the pin-type twisting unit 15, and causes the suction unit 25 to suck the yarn Y (step S1, see FIG. 7(a) ).
  • the yarn Y runs below the cutter 23 and the first feed rollers 11, and reach the suction unit 25 via the pin-type twisting unit 15 and the tension sensor 24.
  • the operator causes the yarn Y to pass through the guide member 52, the pin 41, and the guide member 53 (see FIG. 3 ) in this order and then positions the pin 41 so that the pin 41 is retained by the magnets 49 and 50 and the rollers 45 to 48.
  • step S2 the operator operates the operation unit 32 to accelerate the pin 41 from the stopped state until to the low rotation number (step S2). While the pin 41 is accelerating to reach the low rotation number or rotates at the low rotation number, the operator performs yarn threading to the second feed rollers 16 (step S3, see FIG. 7(b) ).
  • the drive roller of the second feed rollers 16 is rotationally driven in advance. As the yarn threading is performed so that the yarn Y is sandwiched between the drive roller and the driven roller, the yarn Y is fed to the downstream side in the yarn running direction. (This applies to the yarn threading to the first feed rollers 11 described later.) In other words, after the completion of the step S3, the running yarn Y has been twisted by the pin 41 rotating at the low speed.
  • step S4 the operator threads the yarn Y to the twist-stopping guide 12 at the yarn threading position, and moves the twist-stopping guide 12 to the operation position by lifting the unillustrated shifter along the guide rail 22 (step S4, see FIG. 8(a) ).
  • the yarn Y is threaded to the first feed rollers 11 in the state in which the drive roller is separated from the driven roller, and is caused to pass through the cutter 23.
  • the twist-stopping guide 12 is being lifted to the operation position, the yarn Y is moved to the yarn path passing the first heater 13 and the cooler 14.
  • the steps S2 to S4 may not be executed in this order.
  • the order of execution of S2 to S4 may be changed, or plural steps may be simultaneously executed.
  • step S5 When the steps S2 to S4 are completed, if the yarn Y runs stably without the occurrence of yarn breakage, etc., the operator operates the operation unit 32 to accelerate the pin 41 from the low rotation number to the high rotation number (step S5). Subsequently, the operator performs yarn threading to the first feed rollers 11 (step S6, see FIG. 8(b) ). To be more specific, the yarn Y is gripped by being sandwiched between the drive roller and the driven roller of the first feed rollers 11, to be in a state of being fed.
  • the operator therefore performs the yarn threading to the first feed rollers 11 when it is considered that the rotation number of the pin 41 has been sufficiently increased, the number of twists of the yarn Y has been increased, and the tension of the yarn Y has been lowered.
  • the operator is able to know whether the rotation number of the pin 41 (motor 54) has been sufficiently increased, based on motor sound, for example.
  • the yarn threading to the first feed rollers 11 may be performed when the pin 41 is accelerating to reach the high rotation number or when the pin 41 has reached the high rotation number.
  • step S6 yarn threading to the third feed rollers 18, the second heater 19, the fourth feed rollers 20, and the winding devices 21 is performed lastly (step S7). In this way, the yarn Y false-twisted by the processing part 3 is wound by the winding unit 4, and a package P is produced.
  • the draw texturing machine 1 of the present embodiment includes: the setting unit 31 which is configured to set a set value regarding the high rotation number for yarn production and a set value regarding the low rotation number lower than the high rotation number, in regard to the rotation number of the pin 41 of the pin-type twisting units 15; and the operation unit 32 provided for switching the rotation number of the pin 41 between the high rotation number and the low rotation number.
  • the setting unit 31 is provided for setting the set values regarding the high rotation number and the low rotation number, the rotation number of the pin 41 (motor 54) can be changed at will by using the setting unit 31. It is therefore possible to suitably handle changes in types and production conditions of yarn Y.
  • the draw texturing machine 1 of the present embodiment has improved versatility, and makes it possible to perform yarn threading irrespective of the proficiency of the operator.
  • the acceleration of the pin 41 can be set by means of the setting unit 31.
  • the acceleration of the pin 41 of the pin-type twisting units 15 is too high, yarn breakage tends to occur at the time of acceleration.
  • the limit acceleration varies in accordance with the type and production conditions of the yarn Y. Because the acceleration of the pin 41 (motor 54) can be set at will, the occurrence of yarn breakage at the time of acceleration of the pin 41 is restrained irrespective of the type and production conditions of the yarn Y.
  • the acceleration of the pin 41 is arranged to be 80, 000rpm/s or less (to be more specific, about 10,000 to 15,000rpm/s). Although depending on the type of the yarn Y, occurrence of yarn breakage at the time of acceleration of the pin 41 is suitably restrained when the acceleration of the pin 41 is about 80,000rpm/s or less.
  • the low rotation number of the motor 54 is arranged to be equal to or smaller than 1/2 of the high rotation number.
  • the low rotation number is arranged to be equal to or smaller than 1/2 of the high rotation number, the number of twists of the yarn Y in low-speed rotation is small and yarn shaking is restrained, with the result that yarn threading can be suitably performed.
  • the rotation number of the pin 41 is switched in order from a low rotation number to a high rotation number among the rotation numbers corresponding to the set values set by the setting unit 31, each time the operation unit 32 is operated.
  • the pin 41 is switched, for example, from the stopped state to the low rotation number and then to the high rotation number, as the operation unit 32 is operated in accordance with the progress of the yarn threading process. It is therefore possible to eliminate mistakes such as erroneous swift acceleration of the pin 41 from the stopped state to the high rotation number.
  • the rotational direction of the rotation shaft 43 rotationally driven by the motor 54 is identical with the direction in which the pin 41 is pressed into the gap between the rollers 45 and 47 (46 and 48) attached to the respective rotation shafts 43 and 44.
  • This arrangement makes it possible to prevent the rollers 45 and 46 attached to the rotational shaft 43 rotationally driven by the motor 54 from moving away from the pin 41, with the result that the power of the motor 54 is certainly transmitted to the pin 41 via the rollers 45 and 46.
  • the rotation number of the pin 41 is therefore finely controllable.
  • the tension sensor 24 configured to measure the tension of the yarn Y is provided downstream in the yarn running direction of the pin-type twisting unit 15, and the control unit 30 is provided to perform predetermined control based on the tension detected by the tension sensor 24.
  • the tension of the yarn Y may be rapidly changed and yarn breakage may occur. It is possible to suitably perform the yarn threading process while restraining the yarn breakage, by properly executing the predetermined control based on the tension of the yarn Y. As specific examples, the following will describe modifications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Lubricants (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Paper (AREA)
EP19157701.4A 2018-03-16 2019-02-18 Draw texturing machine Active EP3540103B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018048958A JP7128574B2 (ja) 2018-03-16 2018-03-16 仮撚加工機

Publications (2)

Publication Number Publication Date
EP3540103A1 EP3540103A1 (en) 2019-09-18
EP3540103B1 true EP3540103B1 (en) 2020-11-18

Family

ID=65493886

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EP19157701.4A Active EP3540103B1 (en) 2018-03-16 2019-02-18 Draw texturing machine

Country Status (4)

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EP (1) EP3540103B1 (zh)
JP (1) JP7128574B2 (zh)
CN (1) CN110273207B (zh)
TW (1) TWI778228B (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7390207B2 (ja) 2020-02-20 2023-12-01 Ｔｍｔマシナリー株式会社 繊維機械及び糸張力把握方法
JP7398323B2 (ja) * 2020-04-06 2023-12-14 Ｔｍｔマシナリー株式会社 仮撚加工機
JP2022074285A (ja) * 2020-11-04 2022-05-18 Ｔｍｔマシナリー株式会社 仮撚加工機
CN116685729A (zh) 2021-03-16 2023-09-01 日本Tmt机械株式会社 假捻加工机

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US3392519A (en) * 1966-01-31 1968-07-16 Scragg & Sons Textile apparatus
US3662531A (en) * 1970-04-21 1972-05-16 Logan Inc Jonathan Method and apparatus for protecting production of textured textile yarn
JPS5025839A (zh) 1973-07-11 1975-03-18
JPS59150130A (ja) * 1983-02-16 1984-08-28 東レ株式会社 延伸仮撚機の駆動方法
DE69524056T2 (de) * 1994-10-03 2002-07-11 Kikuchi Kogyo Co Gatter mit doppelzwirnvorrichtung
JP3196712B2 (ja) * 1998-02-26 2001-08-06 村田機械株式会社 仮撚加工機
JP2002069763A (ja) * 2000-08-25 2002-03-08 Toray Eng Co Ltd ピンツイスター式仮撚装置
EP1614781A1 (de) * 2004-07-06 2006-01-11 Schärer Schweiter Mettler AG Verfahren und Drallgeber zur Falschdraht-Texturierung
CN200964467Y (zh) * 2006-10-19 2007-10-24 江苏九州纺织有限公司 空芯锭
JP2011047074A (ja) 2009-08-27 2011-03-10 Tmt Machinery Inc 仮撚加工機
CN102534901A (zh) 2012-02-17 2012-07-04 浙江自力机械有限公司 一种磁性转子式假捻器
JP6457342B2 (ja) 2014-07-03 2019-01-23 Ｔｍｔマシナリー株式会社 仮撚加工機、及び、仮撚加工機の糸掛け方法
CN204039637U (zh) * 2014-08-14 2014-12-24 山东日发纺织机械有限公司 喷水织机电子假捻机构
CN204939711U (zh) * 2015-08-19 2016-01-06 无锡宏源机电科技股份有限公司 假捻变形机
CN113050568B (zh) * 2017-02-22 2022-03-15 苏州普力玛智能电子有限公司 一种假捻丝的质量监测方法及监测系统

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Also Published As

Publication number Publication date
CN110273207A (zh) 2019-09-24
JP2019157313A (ja) 2019-09-19
CN110273207B (zh) 2022-08-23
JP7128574B2 (ja) 2022-08-31
TW201938866A (zh) 2019-10-01
TWI778228B (zh) 2022-09-21
EP3540103A1 (en) 2019-09-18

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