EP3360991B1 - Draw texturing machine - Google Patents

Draw texturing machine Download PDF

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Publication number
EP3360991B1
EP3360991B1 EP18155074.0A EP18155074A EP3360991B1 EP 3360991 B1 EP3360991 B1 EP 3360991B1 EP 18155074 A EP18155074 A EP 18155074A EP 3360991 B1 EP3360991 B1 EP 3360991B1
Authority
EP
European Patent Office
Prior art keywords
belt
pulley
false
twister
disc
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
EP18155074.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3360991A1 (en
Inventor
Kinzo Hashimoto
Takayuki Horimoto
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 EP3360991A1 publication Critical patent/EP3360991A1/en
Application granted granted Critical
Publication of EP3360991B1 publication Critical patent/EP3360991B1/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
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/085—Rollers or other friction causing elements between crossed belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/10—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
    • B65H51/105—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips one of which is an endless belt
    • 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
    • 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
    • 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
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a draw texturing machine including a plurality of false-twisting devices each configured to false-twist two running yarns in opposite directions to each other.
  • JP H08-27637 A discloses a so-called draw texturing and combining machine, in which each pair of false-twisted yarns, one of which is S-twisted and the other of which is Z-twisted, are combined together.
  • each false-twisting device included in the machine of JP H08-27637 A is configured to twist the corresponding pair of yarns in S direction and Z direction, respectively, at the same time.
  • the false-twisting device includes a disc member configured to rotate, and two false-twisting belt units provided so that the disc member is interposed between the two belt units.
  • Each false-twisting belt unit includes two pulleys (a driving pulley and a driven pulley), and a false-twisting belt wrapped around the two pulleys.
  • the false-twisting belts run on both sides of the rotating disc member in the same direction relative to the disc member, the two yarns on both sides of the disc member are twisted in the opposite directions (S direction and Z direction), respectively.
  • the false-twisting devices provided for the respective processing units are driven by a large common motor provided to the machine. More specifically, a long driving belt configured to transmit the power of the motor to the false-twisting belt units of the false-twisting devices is provided so as to be runnable in a loop manner from one end portion to the other end portion, and then back to the one end portion of the machine with respect to an arrangement direction in which the false-twisting devices are arranged.
  • the driving belt includes a forward-running portion and a backward-running portion.
  • each false-twisting belt unit of each false-twisting device is connected to a pulley (connection pulley) configured to transmit the power of the motor transmitted through the driving belt.
  • a pulley connection pulley
  • One of the two connection pulleys of each false-twisting device is in contact with the forward-running portion of the driving belt, while the other of the two connection pulleys of each false-twisting device is in contact with the backward-running portion of the belt.
  • the driving belt in this state runs in the arrangement direction, the driving belt rotates the two connection pulleys in opposite directions to each other.
  • JP 2 951 209 B2 is related to the preamble of claim 1, and US 4 910 953 A as well as US 4 047 374 A are also related to false-twisting devices.
  • JP H08 27637 A Because the false-twisting devices described in JP H08 27637 A are driven by the single large motor, various problems may occur. For example, noise and/or vibration produced by the motor in operation are large, which may cause a noise problem or the like. Furthermore, because the false-twisting devices are driven by the common single motor, it is necessary to provide members configured to transmit the power via the long driving belt. This disadvantageously increases the size of the overall machine, and/or complicates the work of maintenance of, for example, detaching the driving belt and/or the false-twisting belts.
  • An object of the present invention is to solve problems which may occur when false-twisting devices are driven by a single driving source.
  • a draw texturing machine includes a plurality of false-twisting devices each configured to twist first and second different yarns in opposite directions to each other.
  • Each of the false-twisting devices includes: a disc configured to rotate; a first belt unit provided close to a first surface of the disc and including a first twister belt configured to allow the first yarn to be interposed between the disc and the first twister belt; a second belt unit provided close to a second surface of the disc and including a second twister belt configured to allow the second yarn to be interposed between the disc and the second twister belt; and a belt driving source provided for each of the false-twisting devices and configured to drive the first twister belt and the second twister belt, wherein, according to claim 1, a belt driving source, pulleys and a power transmission belt are provided for each of the false-twisting devices and configured to drive the first twister belt and the second twister belt or according to claim 5, a belt driving source and gears are provided for each of the false-twist
  • each of the false-twisting devices of the draw texturing machine includes the common driving source configured to drive the first twister belt for twisting the first yarn and to drive the second twister belt for twisting the second yarn. That is to say, each of the false-twisting devices is independently driven by its own driving source. In this case, as compared with cases where false-twisting devices are driven by a single common motor, each driving source may have a smaller size, which drastically reduces noise and vibration made by each driving source. As a result, noise and vibration of the machine are reduced. Furthermore, there is no necessity to provide an element for power transmission through which the false-twisting devices are driven by a common motor, and therefore downsizing of the overall draw texturing machine is possible. Still further, a mechanism for power transmission is compact in the above arrangement, and this makes maintenance easier.
  • each of the false-twisting devices includes its own belt driving source, and therefore it is possible to control the false-twisting devices independently from one another. For example, when one of the false-twisting devices has to be stopped due to yarn breakage or the like, the concerned false-twisting device can be stopped merely by stopping the belt driving source of this false-twisting device.
  • the draw texturing machine of the first aspect is arranged such that: the first belt unit includes a first driving pulley, a first driven pulley, and a first connection pulley, a first twister belt being wrapped around the first driving pulley and the first driven pulley, the first connection pulley being connected to the first driving pulley; the second belt unit includes a second driving pulley, a second driven pulley, and a second connection pulley, a second twister belt being wrapped around the second driving pulley and the second driven pulley, the second connection pulley being connected to the second driving pulley; a power transmission belt configured to be driven by the belt driving source is wrapped about the first connection pulley and the second connection pulley; and an inner surface of the power transmission belt is in contact with the first connection pulley, and an outer surface of the power transmission belt is in contact with the second connection pulley.
  • the inner surface of the power transmission belt is in contact with the first connection pulley, and the outer surface of the power transmission belt is in contact with the second connection pulley.
  • the power of the belt driving source is transmitted to the first connection pulley (and the first driving pulley) and to the second connection pulley (and the second driving pulley) so that the first and second connection pulleys rotate in opposite directions to each other.
  • the first twister belt and the second twister belt are driven, so that: the first yarn is twisted in a first direction by the first twister belt and the disc; and the second yarn is twisted in a second direction opposite to the first direction by the second twister belt and the disc.
  • a long common belt configured to drive the false-twisting devices.
  • Each false-twisting device is driven using a shorter belt, dimensions of which are less than those of the false-twisting device.
  • the draw texturing machine is arranged such that: an auxiliary pulley is provided so as to be opposed to the first connection pulley with the second connection pulley interposed between the auxiliary pulley and the first connection pulley; the power transmission belt is wrapped about the first connection pulley, the second connection pulley, and the auxiliary pulley; and the auxiliary pulley is in contact with the inner surface of the power transmission belt.
  • the second connection pulley is in contact with the outer surface of the belt, while the auxiliary pulley is in contact with the inner surface of the belt. That is, the belt is wrapped about these pulleys in S manner or in Z manner. This makes it possible to increase the wrap angle of the belt onto the second connection pulley, and thereby to increase the contact area between the belt and the second connection pulley. This reduces or minimizes the slip of the belt on the second connection pulley.
  • the draw texturing machine is arranged such that: first teeth arranged in a belt longitudinal direction are provided on the inner surface of the power transmission belt; second teeth arranged in the belt longitudinal direction are provided on the outer surface of the power transmission belt; the first connection pulley has, on its outer circumferential surface, first grooves configured to mesh with the first teeth provided on the inner surface of the power transmission belt; and the second connection pulley has, on its outer circumferential surface, second grooves configured to mesh with the second teeth provided on the outer surface of the power transmission belt.
  • the first teeth provided on the inner surface of the power transmission belt mesh with the first grooves of the first connection pulley
  • the second teeth provided on the outer surface of the power transmission belt mesh with the second grooves of the second connection pulley.
  • the direction perpendicular to the sheet of FIG. 1 is defined as a "base longitudinal direction”, and a left-right direction in the sheet is defined as a "base width direction”.
  • the direction orthogonal to both the base longitudinal direction and the base width direction is a vertical direction in which gravity attracts objects.
  • the front side in the sheet of FIG. 1 is defined as a "front side in the base longitudinal direction”
  • the rear side in the sheet is defined as a "rear side in the base longitudinal direction”.
  • FIG. 1 is a side view of a draw texturing machine 1 of the present embodiment.
  • the draw texturing machine 1 of the present embodiment is configured to false-twist yarns Y supplied from yarn supply packages Q such that one of each pair of yarns Y is S-twisted (twisted in S direction) and the other is Z-twisted (twisted in Z direction), then to combine each pair of yarns Y together, and to wind the obtained yarns into packages P.
  • the draw texturing machine 1 includes a yarn supplying unit 2, a processing unit 3, and a winding unit 4.
  • the yarn supplying unit 2 is configured to supply yarns Y.
  • the processing unit 3 is configured to false-twist the yarns Y supplied from the yarn supplying unit 2.
  • the winding unit 4 is configured to wind the yarns Y false-twisted in the processing unit 3 to form packages P.
  • Each of the yarn supplying unit 2, processing unit 3, and winding unit 4 has a plurality of unit sections, which will be detailed later. These unit sections are arranged in the base longitudinal direction which is orthogonal to a yarn running plane (the sheet of FIG. 1 ) on which a yarn path from the yarn supplying unit 2 to the winding unit 4 via the processing unit 3 extends.
  • the yarn supplying unit 2 includes creel stands 10 each configured to support yarn supply packages Q, and is configured to supply the yarns Y to the processing unit 3.
  • the processing unit 3 includes: first feed rollers 11; twist-stopping guides 12; first heating devices 13; cooling devices 14; false-twisting devices 15; second feed rollers 16; combining devices 17, third feed rollers 18, second heating devices 19; and fourth feed rollers 20. These members are arranged in this order from an upstream side in a yarn running direction, in which the yarns Y run.
  • the winding unit 4 is configured to wind the yarns Y false-twisted in the processing unit 3 by winding devices 21, to form packages P.
  • the draw texturing machine 1 includes main frames 5 arranged in a row and winding bases 6 arranged in rows so as to be apart from the main frames 5 in the base width direction.
  • the row of the main frames 5 and the rows of the winding bases 6 have the substantially same length in the base longitudinal direction.
  • Each winding base 6 is opposed to the corresponding main frame 5.
  • An upper portion of each winding base 6 is connected with an upper portion of the corresponding main frame 5 by a supporting frame 7.
  • Devices constituting the processing unit 3 are mainly attached to the main frames 5 or to the supporting frames 7.
  • the main frames 5, the winding bases 6, and the supporting frames 7 define a working space 8.
  • the yarn path is formed so that yarns Y mainly run around the working space 8.
  • the draw texturing machine 1 has unit sections called spans.
  • Each span includes one main frame 5 and one winding base 6 as a pair, which are opposed to each other.
  • devices are arranged so that the yarns Y running while being arranged side by side in the base longitudinal direction can be false-twisted simultaneously.
  • spans are arranged in rows extending in the base longitudinal direction so that the rows are symmetrical with respect to a center line C of the main frames 5 (the center line with respect to the base width direction).
  • Each main frame 5 is shared with the spans on its both sides.
  • the first feed rollers 11 are configured to feed the yarns Y supplied from the yarn supplying unit 2 to the first heating devices 13. Each first feed roller 11 is provided at an upper portion of the corresponding winding base 6. Each first feed roller 11 includes unillustrated pairs of drive and driven rollers respectively provided for the yarns Y. The drive rollers and driven rollers are arranged in rows, respectively, in the base longitudinal direction.
  • Each twist-stopping guide 12 is configured to prevent propagation of the twist of the corresponding yarn Y, which is imparted by the later-described false-twisting device 15, to a portion upstream of the twist-stopping guide 12 in the yarn running direction.
  • the twist-stopping guides 12 are provided downstream of the first feed rollers 11 in the yarn running direction and upstream of the first heating devices 13 in the yarn running direction.
  • the twist-stopping guides 12 are provided respectively for the yarns Y supplied from the yarn supplying unit 2, and are aligned in the base longitudinal direction.
  • the first heating devices 13 are configured to heat the yarns Y fed from the first feed rollers 11, and are provided onto the supporting frames 7. Each first heating device 13 is inclined with respect to the base width direction so that its downstream end in the yarn running direction is lower than its upstream end in the yarn running direction.
  • the twist-stopping guides 12, the cooling devices 14, and the false-twisting devices 15 are provided substantially along a direction in which the first heating devices 13 extend.
  • the first heating devices 13 are provided for the yarns Y supplied from the yarn supplying unit 2, and are aligned in the base longitudinal direction.
  • the cooling devices 14 are configured to cool the yarns Y heated by the first heating devices 13.
  • the cooling devices 14 are provided downstream of the first heating devices 13 in the yarn running direction and upstream of the false-twisting devices 15 in the yarn running direction.
  • the cooling devices 14 are provided respectively for the yarns Y supplied from the yarn supplying unit 2, and are aligned in the base longitudinal direction.
  • Each false-twisting device 15 is provided at an upper portion of the corresponding main frame 5, and is configured to twist a corresponding pair of yarns Y (yarns Y1 and Y2) out of the yarns Y in opposite directions. Specifically, the false-twisting device 15 twists one of the pair of yarns Y in S direction, and twists the other of the pair of yarns Y in Z direction.
  • the yarn Y1 is equivalent to a "first yarn” in the present invention, while the yarn Y2 is equivalent to a "second yarn” in the present invention.
  • the false-twisting devices 15 are arranged in the base longitudinal direction. The details of the false-twisting devices 15 will be described later.
  • the second feed rollers 16 are configured to feed the yarns Y treated by the false-twisting devices 15 to the combining devices 17.
  • the second feed rollers are provided below the false-twisting devices 15, in the main frames 5.
  • Each second feed roller 16 includes unillustrated pairs of drive and driven rollers respectively provided for the yarns Y.
  • the drive rollers and driven rollers are arranged in rows, respectively, in the base longitudinal direction.
  • the conveyance speed at which the second feed rollers 16 convey the yarns Y is higher than the conveyance speed at which the first feed rollers 11 convey the yarns Y, and therefore the yarns Y are drawn between the first feed rollers 11 and the second feed rollers 16.
  • Each combining device 17 is configured to combine the corresponding yarns Y1 and Y2 together.
  • the combining devices 17 are provided below the second feed rollers 16, in the main frames 5.
  • Each combining device 17 is configured, for example, to eject air to the corresponding yarns Y1 and Y2, thereby to combine the yarns Y1 and Y2 through air entanglement (air interlacing), in which filaments of the yarns Y1 and Y2 are entangled by air jets.
  • the combining devices 17 are provided so as to correspond to the false-twisting devices 15 in number, i.e., on a one-to one basis.
  • the third feed rollers 18 are configured to feed the yarns Y combined in the combining devices 17 to the second heating devices 19.
  • the third feed rollers 18 are provided below the combining devices 17, in the main frames 5.
  • Each third feed roller 18 includes unillustrated pairs of drive and driven rollers respectively provided for the pairs of yarns Y combined in the combining devices 17.
  • the drive rollers and driven rollers are arranged in rows, respectively, in the base longitudinal direction.
  • the conveyance speed at which the third feed rollers 18 convey the yarns Y is lower than the conveyance speed at which the second feed rollers 16 convey the yarns Y, and therefore the yarns Y are relaxed between the second feed rollers 16 and the third feed rollers 18.
  • the second heating devices 19 are configured to heat the yarns Y fed by the third feed rollers 18, and are provided below the third feed rollers 18, in the main frames 5. Each second heating device 19 extends in the vertical direction. Each span has one second heating device 19.
  • the fourth feed rollers 20 are configured to feed the yarns Y heated by the second heating devices 19 to the winding devices 21.
  • Each fourth feed roller 20 is provided at a lower portion of the corresponding winding base 6.
  • Each fourth feed roller 20 includes unillustrated pairs of drive and driven rollers respectively provided for the yarns Y heated by the second heating devices 19.
  • the drive rollers and driven rollers are arranged in rows, respectively, in the base longitudinal direction.
  • the conveyance speed at which the fourth feed rollers 20 convey the yarns Y is lower than the conveyance speed at which the third feed rollers 18 convey the yarns Y, and therefore the yarns Y are relaxed between the third feed rollers 18 and the fourth feed rollers 20.
  • each of the pairs of yarns Y which have been drawn between the first feed rollers 11 and the second feed rollers 16, are twisted by the corresponding false-twisting device 15. Twists imparted by each false-twisting device 15 are propagated to the corresponding twist-stopping guide 12, however, the twists are not propagated to the portion upstream of the twist-stopping guide 12 in the yarn running direction.
  • the yarns Y twisted while being drawn are heated in the first heating devices 13 to be heat-set, and then cooled in the cooling devices 14.
  • the yarns Y are untwisted on the downstream side from the false-twisting devices 15.
  • each pair of yarns Y (yarn Y1 and yarn Y2) false-twisted (S-twisted and Z-twisted) by the corresponding false-twisting device 15 are combined together by the corresponding combining device 17, while being relaxed between the second feed rollers 16 and the third feed rollers 18.
  • the combined pairs of yarns Y are heat-set in the second heating devices 19 while being relaxed between the third feed rollers 18 and the fourth feed rollers 20.
  • the yarns Y fed by the fourth feed rollers 20 are wound by the winding devices 21, so that packages P are formed.
  • FIG. 2 is a perspective view of the false-twisting device 15.
  • FIG. 3 is a side view of the false-twisting device 15 viewed in the base longitudinal direction.
  • FIG. 4 is a diagram showing the false-twisting devices 15, viewed in a direction of an arrow IV in FIG. 3 .
  • FIG. 5 is an explanatory diagram illustrating a part of the false-twisting device 15, the part including a later-described driving unit 34 and its peripheries.
  • the false-twisting devices 15 are arranged in the base longitudinal direction (see FIG. 4 ). Each false-twisting device 15 is configured to twist the corresponding pair of different yarns Y (yarns Y1 and Y2) in opposite directions (S direction and Z direction). In other words, one of the pair of yarns Y is S-twisted, and the other of the pair of yarns Y is Z-twisted. Each false-twisting device 15 has the following structure in order to twist the yarn Y1 and yarn Y2 in the opposite directions. Specifically, as shown FIG.
  • the false-twisting device 15 includes: a rotatable disc 31; a belt unit 32 ("first belt unit” in the present invention) provided on a front side in the base longitudinal direction relative to the disc 31 ("close to a first surface of the disc” in the present invention); a belt unit 33 (“second belt unit” in the present invention) provided on a rear side in the base longitudinal direction relative to the disc 31 ("close to a second surface of the disc” in the present invention); and a driving unit 34 configured to drive a later-described twister belt 53 ("first twister belt” in the present invention) of the belt unit 32 and to drive a later-described twister belt 63 ("second twister belt” in the present invention) of the belt unit 33, as main components.
  • the disc 31 is provided between the yarns Y1 and Y2 running through the false-twisting device 15.
  • the yarn Y1 is located on the front side relative to the disc 31 in the base longitudinal direction while the yarn Y2 is located on the rear side relative to the disc 31 in the base longitudinal direction (see FIG. 3 and FIG. 4 ).
  • a ring portion 42 is provided at an outer circumferential portion of the disc 31.
  • the ring portion 42 is configured to twist the yarns Y1 and Y2 in cooperation with the twister belts 53 and 63.
  • the ring portion 42 is made of material having wear resistance equal to or higher than that of the twister belts 53 and 63.
  • a ring surface 42a is provided on a front surface of the ring portion 42, which is on the front side in the base longitudinal direction.
  • the ring surface 42a is in contact with a part of an outer surface of the twister belt 53.
  • a ring surface 42b is provided on a rear surface of the ring portion 42, which is on the rear side in the base longitudinal direction.
  • the ring surface 42b is in contact with a part of an outer surface of the twister belt 63.
  • the disc 31 is attached to a shaft 41 extending along the base longitudinal direction.
  • the shaft 41 extends in the base longitudinal direction, for example, so as to be shared among a plurality of false-twisting devices 15.
  • the discs 31 of the false-twisting devices 15 are attached, and the shaft 41 is connected to a single motor (not illustrated). As the motor rotates, the discs 31 of the false-twisting devices 15 rotate about the shaft 41.
  • the belt unit 32 is configured to twist (Z-twist, in the present embodiment) the yarn Y1 interposed between the belt unit 32 and the disc 31.
  • the belt unit 32 is provided on the front side relative to the disc 31 in the base longitudinal direction.
  • the belt unit 32 includes: a pulley 51 ("first driving pulley” in the present invention) and a pulley 52 ("first driven pulley” in the present invention); the twister belt 53; a shaft 54 with its one end portion fixed to the pulley 51; and a pulley 55 (“first connection pulley” in the present invention) fixed to the shaft 54.
  • Each of the pulleys 51 and 52 is configured to be rotatable about a rotational axis direction which is orthogonal to the base longitudinal direction.
  • the pulley 51 and the pulley 52 are arranged in a direction orthogonal to the above rotational axis direction and to the base longitudinal direction.
  • the twister belt 53 is an endless belt, and is wrapped around the pulley 51 and the pulley 52.
  • the yarn Y1 is between: a portion of the twister belt 53 which is not in contact with the pulleys 51 and 52 and is closer to the disc 31 in the base longitudinal direction; and the ring portion 42 of the disc 31.
  • the one end portion of the shaft 54 is fixed to the pulley 51.
  • the shaft 54 extends in the rotational axis direction of the pulley 51.
  • the shaft 54 extends obliquely in such a manner that its end closer to the working space 8 (see FIG. 1 ) in the base width direction is located higher than the farther end.
  • the pulley 55 is fixed to the other end portion of the shaft 54, and is connected to the pulley 51 via the shaft 54.
  • a plurality of grooves 56 (first grooves" in the present invention) each extending in the rotational axis direction of the pulley 55 are arranged at substantially equal intervals in the circumferential direction of the pulley 55 (see FIG. 5 ).
  • the belt unit 33 is configured to twist the yarn Y2 in the direction opposite to that of the yarn Y1 (in S direction in the present embodiment) while holding the yarn Y2 between the belt unit 33 and the disc 31.
  • the belt unit 33 is positioned so as to be opposed to the belt unit 32 with the disc 31 interposed between them. That is, the belt unit 33 is provided on the rear side relative to the disc 31 in the base longitudinal direction.
  • the structure of the belt unit 33 is similar to that of the belt unit 32 which has been described above.
  • the belt unit 33 includes: a pulley 61 ("second driving pulley” in the present invention) and a pulley 62 ("second driven pulley” in the present invention); the twister belt 63 wrapped around the pulleys 61 and 62; a shaft 64 with its one end portion fixed to the pulley 61; and a pulley 65 (“second connection pulley” in the present invention) fixed to the other end portion of the shaft 64.
  • the yarn Y2 is interposed between the twister belt 63 and the ring portion 42.
  • a plurality of grooves 66 (second grooves" in the present invention) each extending in the rotational axis direction of the pulley 65 are arranged at substantially equal intervals in the circumferential direction of the pulley 65 (see FIG. 5 ).
  • a pulley 67 (“auxiliary pulley” in the present invention) is rotatably provided so as to be opposed to the pulley 55 with the pulley 65 interposed between the pulleys 67 and 55 in the base longitudinal direction (see FIG. 5 ).
  • a plurality of grooves 68 each extending in the rotational axis direction of the pulley 67 are arranged at substantially equal intervals in the circumferential direction of the pulley 67 (see FIG. 5 ).
  • the driving unit 34 is configured to drive both the twister belt 53 and the twister belt 63.
  • Each false-twisting device 15 is provided with its own driving unit 34.
  • the driving unit 34 is provided, for example, above the disc 31.
  • the driving unit 34 includes: a motor 71 ("belt driving source" in the present invention) functioning as a power source; and a pulley 72 connected to a rotation shaft of the motor 71.
  • the rotation shaft of the motor 71 extends obliquely upward toward the working space 8.
  • the pulley 72 is provided obliquely above the motor 71. In the other words, the motor 71 is provided between the disc 31 and the pulley 72.
  • a plurality of grooves 73 each extending in the rotational axis direction of the pulley 72 are arranged at substantially equal intervals in the circumferential direction of the pulley 72 (see FIG. 5 ).
  • a belt 35 (“power transmission belt” in the present invention) is wrapped about the pulleys 55, 65, 67, and 72.
  • the belt 35 is an endless belt configured to transmit the power from the driving unit 34 to the pulley 55 and the pulley 65.
  • the inner surface of the belt 35 is in contact with the pulleys 55, 67, and 72, and the outer surface of the belt 35 is in contact with the pulley 65.
  • teeth 75 are arranged at substantially equal intervals in the longitudinal direction of the belt 35.
  • teeth 76 are arranged at substantially equal intervals in the longitudinal direction of the belt 35.
  • the teeth 75 on the inner surface of the belt 35 are configured to mesh with the grooves 56, 68, and 73 of the pulleys 55, 67, and 72.
  • the teeth 76 on the outer surface of the belt 35 are configured to mesh with the grooves 66 of the pulley 65.
  • the disc 31 is driven and rotated about the shaft 41 by an unillustrated motor in a direction indicated by an arrow (in a clockwise direction in FIG. 2 ).
  • the pulley 65 is in contact with the outer surface of the belt 35, the power of the motor 71 is transmitted to the pulley 65 in the direction opposite to that for the pulleys 55 and the like. That is, the pulley 65 rotates in the direction opposite to the rotation direction of the pulleys 55 and the like, i.e., the pulley 65 rotates in the clockwise direction in FIG. 5 .
  • the teeth 75 of the belt 35 mesh with the grooves 56, 68, and 73 of the pulleys 55, 67, and 72, respectively, and the teeth 76 of the belt 35 mesh with the grooves 66 of the pulley 65. This prevents the slip of the belt 35 on the pulleys 55 and the like.
  • the pulley 51 rotates together with the pulley 55
  • the pulley 61 rotates together with the pulley 65.
  • the pulley 55 and the pulley 65 rotate in the opposite directions to each other, and therefore the pulley 51 and pulley 61 rotate in the opposite directions to each other.
  • the power is transmitted to the twister belt 53 and to the twister belt 63.
  • a portion of the twister belt 53 and a portion of the twister belt 63 which are close to the disc 31, run in the same direction relative to the disc 31.
  • the pulleys 52 and 62 are rotated in a slave manner as the respective twister belts 53 and 63 are driven.
  • the yarn Y1 is between the ring portion 42 of the rotating disc 31 and the running twister belt 53, the yarn Y1 is Z-twisted. Meanwhile, as the yarn Y2 is between the ring portion 42 and the twister belt 63, the yarn Y2 is S-twisted. That is, the yarn Y1 and the yarn Y2 are twisted in the opposite directions to each other.
  • each of the false-twisting devices 15 includes the motor 71 configured to drive the twister belt 53 for twisting the yarn Y1 and to drive the twister belt 63 for twisting the yarn Y2. That is to say, each of the false-twisting devices 15 is independently driven by its own motor 71. In this case, as compared with cases where the false-twisting devices 15 are driven by a single common motor, each motor 71 may have a smaller size, which drastically reduces noise and vibration made by each motor 71. As a result, noise and vibration of the machine are reduced.
  • each of the false-twisting devices 15 includes its own motor 71, and therefore it is possible to control the false-twisting devices 15 independently from one another. For example, when one of the false-twisting devices 15 has to be stopped due to yarn breakage or the like, the concerned false-twisting device 15 can be stopped merely by stopping the motor 71 of this false-twisting device 15. That is, it is possible to stop any false-twisting device 15 individually without a mechanism configured to separate the pulleys 55 and 65 from the belt 35, and this simplifies the structure of the false-twisting device 15.
  • each of the false-twisting devices 15 the inner surface of the belt 35 is in contact with the pulley 55, and the outer surface of the belt 35 is in contact with the pulley 65.
  • the power of the motor 71 is transmitted to the pulley 55 (and the pulley 51) and to the pulley 65 (and the pulley 62) so that the pulleys 55 and 65 rotate in opposite directions to each other.
  • the twister belt 53 and the twister belt 63 are driven, so that: the yarn Y1 is twisted in a first direction by the twister belt 53 and the disc 31; and the yarn Y2 is twisted in a second direction opposite to the first direction by the twister belt 63 and the disc 31.
  • Each false-twisting device 15 is driven using the shorter belt 35, dimensions of which are less than those of the false-twisting device 15.
  • the pulley 65 is in contact with the outer surface of the belt 35, and the pulley 67 is in contact with the inner surface of the belt 35. That is, the belt 35 is wrapped about these pulleys in S manner or in Z manner. This makes it possible to increase the wrap angle of the belt 35 onto the pulley 65, and thereby to increase the contact area between the belt 35 and the pulley 65. This reduces or minimizes the slip of the belt 35 on the pulley 65.
  • the teeth 75 provided on the belt 35 meshes with the grooves 56 of the pulley 55, and the teeth 76 provided on the belt 35 meshes with the grooves 66 of the pulley 65.
  • the above arrangement reduces variation in yarn quality among the false-twisting devices 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP18155074.0A 2017-02-08 2018-02-05 Draw texturing machine Active EP3360991B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017020971A JP6914664B2 (ja) 2017-02-08 2017-02-08 仮撚加工機

Publications (2)

Publication Number Publication Date
EP3360991A1 EP3360991A1 (en) 2018-08-15
EP3360991B1 true EP3360991B1 (en) 2020-10-21

Family

ID=61192671

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EP18155074.0A Active EP3360991B1 (en) 2017-02-08 2018-02-05 Draw texturing machine

Country Status (5)

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EP (1) EP3360991B1 (ja)
JP (1) JP6914664B2 (ja)
KR (1) KR102256956B1 (ja)
CN (1) CN108396421B (ja)
TW (1) TWI713816B (ja)

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Publication number Priority date Publication date Assignee Title
JP7319089B2 (ja) * 2019-05-27 2023-08-01 Ｔｍｔマシナリー株式会社 仮撚加工機
JP7319090B2 (ja) * 2019-05-27 2023-08-01 Ｔｍｔマシナリー株式会社 仮撚加工機
JP2022189739A (ja) 2021-06-10 2022-12-22 Ｔｍｔマシナリー株式会社 仮撚加工機
CN117604690B (zh) * 2024-01-17 2024-04-16 苏州市奕双新材料有限公司 一种混纺纱生产设备及生产工艺

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Publication number Priority date Publication date Assignee Title
FR2332352A1 (fr) * 1975-11-19 1977-06-17 Roannais Const Textiles Atel Perfectionnement aux broches de texturation fausse-torsion par disques
DE3818370A1 (de) * 1987-06-02 1988-12-22 Murata Machinery Ltd Spinnstelle
FR2619831B1 (fr) * 1987-08-28 1989-11-24 Devtex Dispositif permettant de communiquer une fausse torsion par friction a au moins un fil en mouvement
US4940953A (en) * 1989-09-05 1990-07-10 Honeywell Inc. Millimeter wave microstrip IMPATT diode oscillator
JP3141590B2 (ja) * 1992-12-07 2001-03-05 村田機械株式会社 仮撚装置
JP2951209B2 (ja) * 1994-07-11 1999-09-20 村田機械株式会社 合糸用仮撚り装置
TWI425127B (zh) * 2006-04-05 2014-02-01 Tmt Machinery Inc Clamp type false twisting device
JP4486115B2 (ja) * 2007-08-30 2010-06-23 Ｔｍｔマシナリー株式会社 糸巻取装置、及び仮撚加工機
JP6615496B2 (ja) 2015-06-01 2019-12-04 Ｔｍｔマシナリー株式会社 仮撚加工機

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Also Published As

Publication number Publication date
JP6914664B2 (ja) 2021-08-04
KR102256956B1 (ko) 2021-05-27
CN108396421B (zh) 2022-03-01
KR20180092272A (ko) 2018-08-17
EP3360991A1 (en) 2018-08-15
JP2018127731A (ja) 2018-08-16
TW201829863A (zh) 2018-08-16
TWI713816B (zh) 2020-12-21
CN108396421A (zh) 2018-08-14

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