EP4382648A1 - Garnheizer und falschdralltexturiermaschine - Google Patents

Garnheizer und falschdralltexturiermaschine Download PDF

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Publication number
EP4382648A1
EP4382648A1 EP23209337.7A EP23209337A EP4382648A1 EP 4382648 A1 EP4382648 A1 EP 4382648A1 EP 23209337 A EP23209337 A EP 23209337A EP 4382648 A1 EP4382648 A1 EP 4382648A1
Authority
EP
European Patent Office
Prior art keywords
yarn
heat insulation
insulation member
concave groove
heater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23209337.7A
Other languages
English (en)
French (fr)
Inventor
Takayuki Horimoto
Shigeki Kitagawa
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TMT Machinery Inc filed Critical TMT Machinery Inc
Publication of EP4382648A1 publication Critical patent/EP4382648A1/de
Pending legal-status Critical Current

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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
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/003—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one stationary surface, e.g. a plate

Definitions

  • the yarn heater of any one of the first to third aspects is arranged so that the number of heat insulation members provided at one opposing area is one.
  • the opposing surface of the first heat insulation member opposing the second heat insulation member is a surface orthogonal to the width direction and the opposing surface is on the second heat insulation member side of the virtual straight line extending along the orthogonal direction and passing through the center of the concave groove in the width direction.
  • the end portion of the first heat insulation member which is on the other side (concave groove side) in the orthogonal direction, interferes with the yarn.
  • the farther the opposing surface is from the second heat insulation member the smaller a part of the concave groove opposing the first heat insulation member is.
  • the yarn heater of the fourth or fifth aspect is arranged such that plural concave grooves are aligned in the width direction, and one heat insulation member of the at least one heat insulation member is provided to stretch across two opposing areas opposing, in the orthogonal direction, the respective two concave grooves neighboring each other in the width direction.
  • the yarn heater of the seventh aspect is arranged such that, when viewed in the extending direction, the end portion of the one central heat insulation member, which is on the other side in the orthogonal direction, opposes the two concave grooves in the orthogonal direction.
  • the yarn heater of the seventh or eighth aspect is arranged such that, when viewed in the extending direction, an end portion of the one central heat insulation member, which is on the one side in the orthogonal direction, extends to reach the outside of the two opposing areas.
  • the yarn heater of any one of the seventh to ninth aspects is arranged such that two surfaces of the respective two lateral heat insulation members, which oppose the one central heat insulation member in the width direction, are arranged so that an interval in the width direction between end portions on the other side in the orthogonal direction is shorter than an interval in the width direction between end portions on the one side in the orthogonal direction.
  • This aspect of the present invention makes it possible avoid unintentional movement of the supporting member from the supporting position to the non-supporting position.
  • the false-twist texturing machine of the thirteenth comprises: a yarn supplying unit which is configured to supply a yarn; a processing unit which includes devices including the yarn heater and which is configured to false-twist the yarn supplied from the yarn supplying unit; and a winding device which is configured to wind the yarn processed by the processing unit, the winding device being fixed to a winding base, the devices of the processing unit being attached to a main base opposing the winding base over a working space and a supporting frame connecting an upper part of the winding base with an upper part of the main base, and the yarn heater heating the yarn running in the at least one concave groove which extends in the extending direction and has a mouth that opposes the working space in a direction orthogonal to the extending direction.
  • the false-twist texturing machine of the thirteenth aspect comprises: a first yarn path forming member which is provided upstream of the yarn heater in a yarn running direction and is able to support the yarn to be runnable; and a second yarn path forming member which is provided downstream of the yarn heater in the yarn running direction and is able to support the yarn to be runnable, and a yarn path at the concave groove is formed by the first yarn path forming member and the second yarn path forming member.
  • a vertical direction to the sheet of FIG. 1 is defined as a base longitudinal direction, and a left-right direction to the sheet is defined as a base width direction.
  • the direction orthogonal to the base longitudinal direction and the base width direction is defined as the up-down direction in which the gravity acts.
  • the base longitudinal direction and the base width direction are substantially in parallel to the horizontal direction.
  • the false-twist texturing machine 1 can perform false twisting of yarns Y made of, for example, synthetic fibers such as nylon (polyamide fibers) and polyester.
  • the false-twist texturing machine 1 includes a yarn supplying unit 2 for supplying the yarns Y, a processing unit 3 which performs the false twisting of the yarns Y supplied from the yarn supplying unit 2, and a winding unit 4 which winds the yarns Y processed by the processing unit 3 onto a winding bobbins Bw.
  • Components of the yarn supplying unit 2, the processing unit 3, and the winding unit 4 are aligned to form plural lines (see FIG. 2 ) in the base longitudinal direction.
  • the base longitudinal direction is a direction orthogonal to a yarn running surface (i.e., sheet of FIG. 1 ) on which yarn paths from the yarn supplying unit 2 to the winding unit 4 through the processing unit 3 are provided.
  • the yarn supplying unit 2 includes a creel stand 5 retaining yarn supply packages Ps.
  • the yarn supplying unit 2 supplies yarns Y to a processing unit 3.
  • the processing unit 3 is configured to false-twist the yarns Y supplied from the yarn supply packages Ps.
  • the following members are provided in this order from the upstream in a yarn running direction: first feed rollers 11; a twist-stopping guide 12; a first heater 13 (equivalent to a yarn heater of the present invention); a cooler 14; a false-twisting device 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 includes plural winding devices 21. Each winding device 21 winds a corresponding yarn Y which has been false-twisted by the processing unit 3 onto a winding bobbin Bw and forms a wound package Pw.
  • the false-twist texturing machine 1 includes a main base 8 and a winding base 9 that are spaced apart from each other in the base width direction.
  • the main base 8 and the winding base 9 are provided to be substantially identical in length in the base longitudinal direction.
  • the main base 8 and the winding base 9 oppose each other in the base width direction.
  • An upper part of the main base 8 is connected to an upper part of the winding base 9 by a supporting frame 10.
  • Each device forming the processing unit 3 is mainly attached to the main base 8 or the supporting frame 10.
  • the devices constituting the winding unit 4 are attached to the winding base 9.
  • the main base 8, the winding base 9, and the supporting frame 10 form a working space A in which an operator performs operations such as yarn threading to each device.
  • the yarn paths are formed so that the yarns Y are able to run mainly around the working space A.
  • the draw texturing machine 1 includes units which are termed spans each of which includes a pair of the main base 8 and the winding base 9 placed to oppose each other.
  • process units which are also termed spindles
  • yarn paths are formed to pass the devices constituting the processing unit 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 placed in a left-right symmetrical manner to the sheet, with a center line C of the base width direction of the main base 8 as a symmetry axis.
  • the main base 8 is shared between the left span and the right span.
  • Each first feed roller 11 is configured to unwind one yarn Y from one yarn supply package Ps attached to the yarn supplying unit 2, and to feed the yarn Y to a corresponding first heater 13. As shown in FIG. 2 , for example, each first feed roller 11 is configured to feed one yarn Y to a corresponding first heater 13. Each first feed roller 11 may be able to feed adjacent yarns Y to the downstream side in the yarn running direction.
  • the twist-stopping guide 12 is able to support the yarn Y to be runnable.
  • the twist-stopping guide 12 is provided to prevent twist of the yarn Y formed by the false-twisting device 15 from being propagated to the upstream in the yarn running direction of the twist-stopping guide 12.
  • the first heater 13 is configured to heat the yarns Y supplied from some first feed rollers 11 to a predetermined processing temperature. As shown in FIG. 1 , the first heater 13 is provided above the working space A. As shown in FIG. 2 , for example, the first heater 13 is able to heat two yarns Y. The first heater 13 will be detailed later.
  • the cooler 14 is configured to cool the yarn Y heated at the first heater 13. As shown in FIG. 2 , for example, each cooler 14 is configured to cool one yarn Y.
  • the cooler 14 may be arranged to be able to simultaneously cool plural yarns Y.
  • the false-twisting device 15 is placed downstream of the cooler 14 in the yarn running direction.
  • the false-twisting device 15 is able to support the yarn Y to be runnable.
  • the false-twisting device 15 is configured to twist the yarn Y.
  • the false-twisting device 15 is a socalled disc-friction-type false-twisting device, for example. The disclosure, however, is not limited to this arrangement.
  • Each second feed roller 16 is configured to feed the yarn Y processed by the false-twisting device 15 to a corresponding interlacing device 17.
  • the conveyance speed of conveying the yarn Y by each second feed roller 16 is higher than the conveyance speed of conveying the yarn Y by each first feed roller 11. With this arrangement, the yarn Y is therefore drawn and false-twisted between each first feed roller 11 and each second feed roller 16.
  • the interlacing device 17 is configured to interlace the yarn Y.
  • the interlacing device 17 has, for example, a known interlace nozzle configured to interlace the yarn Y by means of an airflow.
  • Each third feed roller 18 is configured to feed the yarn Y running downstream of the interlacing device 17 in the yarn running direction, to the second heater 19. As shown in FIG. 2 , for example, each third feed roller 18 is configured to feed one yarn Y to the second heater 19. Each third feed roller 18 may be able to feed adjacent yarns Y to the downstream side in the yarn running direction. The conveyance speed of conveying the yarn Y by each third feed roller 18 is lower than the conveyance speed of conveying the yarn Y by each second feed roller 16. The yarn Y is therefore relaxed between each second feed roller 16 and each third feed roller 18.
  • the second heater 19 is configured to heat the yarns Y fed from some third feed rollers 18.
  • the second heater 19 extends along the vertical direction, and one second heater 19 is provided in one span.
  • Each fourth feed roller 20 is configured to feed the yarn Y heated by the second heater 19 to the winding device 21. As shown in FIG. 2 , for example, each fourth feed roller 20 is able to feed one yarn Y to the winding device 21. Each fourth feed roller 20 may be able to feed adjacent yarns Y to the downstream side in the yarn running direction. The conveyance speed of conveying the yarn Y by each fourth feed roller 20 is lower than the conveyance speed of conveying the yarn Y by each third feed roller 18. The yarn Y is therefore relaxed between each third feed roller 18 and each fourth feed roller 20.
  • the yarn Y drawn between the first feed rollers 11 and the second feed rollers 16 is twisted by the false-twisting device 15.
  • the twist formed by the false-twisting device 15 propagates to the twist-stopping guide 12 but does not propagate to the upstream of the twist-stopping guide 12 in the yarn running direction.
  • the yarn Y which is twisted and drawn is heated by a corresponding first heater 13 and thermally set. After that, the yarn Y is cooled by a corresponding cooler 14.
  • the yarn Y is untwisted on the downstream side of the false-twisting device 15 in the yarn running direction. However, the yarn Y is maintained to be wavy in shape on account of the thermal setting described above (i.e., the crimp contraction of the yarn Y is maintained).
  • the false-twisted yarn Y is interlaced by the interlacing device 17 while being relaxed between a corresponding second feed roller 16 and a corresponding third feed roller 18. After that, the yarn Y is guided toward the downstream side in the yarn running direction. Subsequently, the yarn Y is thermally set by the second heater 19 while being relaxed between the third feed rollers 18 and the fourth feed rollers 20. Finally, the yarn Y which is fed by the fourth feed rollers 20 is wound by a corresponding winding device 21.
  • the winding unit 4 includes the winding devices 21.
  • Each winding device 21 is able to wind one yarn Y onto one winding bobbin Bw.
  • the winding device 21 includes a fulcrum guide 31, a traverse device 32, and a cradle 33.
  • the fulcrum guide 31 is a guide which is a fulcrum when the yarn Y is traversed.
  • the traverse device 32 is able to traverse the yarn Y by means of a traverse guide 34.
  • the cradle 33 is configured to rotatably support the winding bobbin Bw.
  • a contact roller 35 is provided in the vicinity of the cradle 33.
  • the contact roller 35 is configured to apply a contact pressure by making contact with the surface of one wound package Pw.
  • the yarn Y which is fed by the fourth feed roller 20 described above is wound onto the winding bobbin Bw by the winding device 21, and forms the wound package Pw.
  • the first heater 13 extends along a predetermined extending direction that is orthogonal to the base longitudinal direction.
  • the extending direction is in parallel to the base width direction.
  • the extending direction may be tilted relative to the base width direction.
  • the first heater 13 has a concave groove 53 extending along the extending direction.
  • the first heater 13 is configured to heat the yarn Y running in the concave groove 53 from one side toward the other side in the extending direction.
  • the yarn Y supported by the twist-stopping guide 12 and the false-twisting device 15 (see FIG. 1 ) to be runnable.
  • the yarn path at the concave groove 53 is formed by the twist-stopping guide 12 and the false-twisting device 15.
  • the first heater 13 is able to heat two yarns Y (yarn Ya and Yb; see FIG. 4 ).
  • the first heater 13 mainly includes a heating unit 50, lateral heat insulation members 71 and 73, and a central heat insulation member 72.
  • the heating unit 50, the lateral heat insulation members 71 and 73, and the central heat insulation member 72 are accommodated in a heat retaining box 60.
  • a heat insulating material 70 is made of, for example, rock wool or ceramic fibers.
  • the heating unit 50 mainly includes a heat source 51, two heating members 52 (52a and 52b) and two yarn contact members 54 (54a and 54b).
  • the heat source 51 is, e.g., a sheathed heater. As shown in FIG. 5 , the heat source 51 extends along the extending direction.
  • the heating members 52 are arranged to be heated by heat generated by the heat source 51.
  • the yarn contact members 54 are arranged to be heated by the heating members 52.
  • the heating members 52 and the yarn contact members 54 extend in the extending direction along the heat source 51.
  • the heating member 52a and the yarn contact member 54a are members for heating the yarn Ya.
  • the heating member 52b and the yarn contact member 54b are members for heating the yarn Yb.
  • the members for heating the yarn Ya oppose the members for heating the yarn Yb over the heat source 51 in the base longitudinal direction.
  • the heating member 52a is, for example, made of a metal material such as brass having a high specific heat.
  • the heating member 52a is provided to be in contact with the heat source 51.
  • the heating member 52a is provided on one side of the heat source 51 in the base longitudinal direction (on the left side in the sheet of FIG. 6(a) ).
  • the heating member 52a has a concave groove 53 (53a) that is open downward (equivalent to "on one side in an orthogonal direction" in the present invention).
  • the mouth of the concave groove 53a is on a side close to the working space A (see FIG. 1 ).
  • the concave groove 53a extends along the extending direction.
  • the concave groove 53 (53a) is entirely defined by the heating member 52a.
  • the concave groove 53 (53a) is required to be at least partially defined by the heating member 52a.
  • the yarn contact member 54a is a long member made of, e.g., SUS.
  • the yarn contact member 54a is detachably attached to the concave groove 53a formed in the heating member 52a.
  • one yarn contact member 54a is attached to one concave groove 53a.
  • plural yarn contact members 54a may be attached to one concave groove 53a.
  • the yarn contact member 54a is in contact with the heating member 52a.
  • the yarn contact member 54a is heated by heat transmitted from the heat source 51 via the heating member 52a, so as to be increased in temperature.
  • the yarn contact member 54a has a yarn contact surface 55 (55a) capable of making contact with the yarn Ya.
  • the yarn contact member 54a is provided in the concave groove 53a so that the yarn contact surface 55a faces down.
  • a space below the yarn contact surface 55a functions as a yarn running space 57 (57a) where the yarn Ya runs.
  • the yarn contact member 54a has two regulating surfaces 56 (56a) that regulates the movement of the yarn Ya in the base longitudinal direction.
  • the two regulating surfaces 56 (56a) are connected to the respective end portions of the yarn contact surface 55a in the base longitudinal direction.
  • the regulating surfaces 56 (56a) are surfaces orthogonal to the base longitudinal direction.
  • FIG. 6(b) in a cross section orthogonal to the base longitudinal direction, the yarn contact surface 55a is curved to protrude downward.
  • the heating member 52b is provided on the other side of the heat source 51 in the base longitudinal direction (on the right side in the sheet of FIG. 6(a) ).
  • the heating member 52b is in contact with the heat source 51.
  • the heating member 52b is provided with a concave groove 53b which is identical in shape with the concave groove 53a.
  • a yarn contact member 54b that is structurally identical with the yarn contact member 54a is detachably attached.
  • the yarn contact member 54b includes a yarn contact surface 55b identical in shape with the yarn contact surface 55a and a regulating surface 56b.
  • a part of the internal space of the concave groove 53b functions as a yarn running space 57b that is identical with the yarn running space 57a. Further details are omitted.
  • two concave grooves 53a and 53b each of which extends along the extending direction are provided to be side by side in the base longitudinal direction (equivalent to a width direction of the present invention).
  • the two yarn contact members 54a and 54b are attached to the two concave grooves 53a and 53b, respectively.
  • a yarn Y (Ya, Yb) sent into the first heater 13 runs in the concave groove 53 (53a, 53b) while being in contact with the yarn contact surface 55 (55a, 55b). Because of this, the yarn Y (Ya, Yb) receives heat from the heating member 52 (52a, 52b) through the yarn contact surface 55 (55a, 55b) and is heated. The temperature of the yarn Y is increased to an appropriate heating temperature by properly setting the type, brand (thickness), and running speed of the yarn Y and the heating temperature.
  • the yarn contact member 54 extends substantially linearly, before it is attached to the concave groove 53.
  • the yarn contacted surface 55 also extends substantially linearly in the direction in which the yarn contact member 54 extends.
  • the length in the longitudinal direction of the yarn contact member 54 is longer than the length in the extending direction of the concave groove 53.
  • the both end portions in the longitudinal direction of the yarn contact member 54 jut out from the respective end portions in the extending direction of the concave groove 53.
  • each fixing plate 41 is arranged to be swingable about a swing axis 42 extending along the extending direction.
  • Each fixing plate 41 has a contact portion 43 that is able to make contact with a lower end face of a part of the yarn contact member 54 jutting out from the concave groove 53.
  • the fixing plate 41 As the fixing plate 41 is swung about the swing axis 42, the fixing plate 41 is movable between a contact position (shown in FIG. 7(a) ) where the contact portion 43 is in contact with the yarn contact member 54 and a retracted position (shown in FIG. 7(b) ) where the contact portion 43 is not in contact with the yarn contact member 54.
  • plural warping units 45 are provided in the concave groove 53.
  • the warping units 45 are provided to be spaced apart from one another in the extending direction.
  • Each warping unit 45 is substantially cylindrical in shape.
  • Each warping unit 45 is disposed so that its axial direction is in parallel to the base longitudinal direction.
  • Each warping unit 45 is attached to the heating member 52.
  • a warping unit 45 substantially at the center in the extending direction of the concave groove 53 is positionally the lowermost.
  • the warping units 45 are disposed so that, the farther a warping unit 45 is from the center in the extending direction of the concave groove 53, the higher the position of the warping unit 45 is.
  • the yarn contact member 54 is lifted upward and the yarn contact member 54 is pressed onto the warping units 45. Thereafter, the fixing plates 41 are moved from the retracted position (shown in FIG. 7(b) ) to the contact position (shown in FIG. 7(a) ), with the result that the contact portion 43 of each fixing plate 41 makes contact with the lower surface of each of the end portions in the extending direction of the yarn contact member 54. At this stage, a downward force is exerted to the yarn contact member 54 by the warping units 45, whereas an upward force is exerted to the contact portion 43 of each fixing plate 41.
  • the yarn contact member 54 is attached to the concave groove 53 in a state of being curved to be substantially U-shaped and protruding downward to form a concave.
  • the yarn contacted surface 55 is also curved to be substantially U-shaped and protrudes downward to form a concave.
  • the fixing plates 41 are moved from the contact position (shown in FIG. 7(a) ) to the retracted position (shown in FIG. 7(b) ), the detachment of the yarn contact member 54 from the concave groove 53 becomes possible.
  • the heat retaining box 60 mainly includes a main body 61, a door 62, side plates 63a and 63b, and a central plate 64.
  • the heat retaining box 60 has entrances 66 of a yarn into the heat retaining box 60.
  • the entrances 66 are provided at parts opposing the respective ends in the extending direction of the yarn running space 57 (57a, 57b).
  • the heat retaining box 60 has a slit 67 that is connected to each entrance 66 at one end and is open at the other end.
  • the main body 61 is a hollow member which is substantially rectangular parallelepiped in shape and which is long in the extending direction. As shown in FIG. 4 , in a lower wall 61a of the main body 61, an opening 68 is formed. The opening 68 is provided along the entire length of the main body 61 in the extending direction. As shown in FIG. 5 , an opening 69 is formed at each of both side walls 61b of the main body 61 in the extending direction. Each opening 69 is provided at the center of a corresponding side wall 61b in the base longitudinal direction. Each opening 69 is open downward.
  • the door 62 is a plate-shaped member extending along the extending direction.
  • the door 62 is attached to the bottom surface of the lower wall 61a of the main body 61.
  • the door 62 is able to swing about a shaft 62a extending along the extending direction.
  • the axis 62a is provided at an end portion of the door 62, which is on the other side in the base longitudinal direction (i.e., on the right side in the sheet of FIG. 4 ).
  • the opening 68 of the main body 61 is closed by the door 62.
  • the door 62 at the closed position swings downward about the shaft 62a (swings counterclockwise in FIG.
  • the door 62 is switched to an open position indicated by broken lines in FIG. 4 , the opening 68 of the main body 61 is open. That is, the door 62 is movable between the closed position where the opening 68 of the main body 61 is closed and the open position where the opening 68 is open.
  • the other end of a spring 65 is fixed to the main body 61.
  • the door 62 is biased by the spring 65 in a direction from the open position toward the closed position. At the closed position, the door 62 is biased upward by the spring 65.
  • Three plates constituted by the side plates 63a and 63b and the central plate 64 are attached to each of the outer surfaces of the side walls 61b at the respective ends in the extending direction of the main body 61.
  • the central plates 64 are provided on the respective sides in the extending direction of the later-described central heat insulation member 72.
  • the central plates 64 are able to support the central heat insulation member 72 from the respective sides in the extending direction.
  • Each central plates 64 is equivalent to a supporting member of the present invention.
  • the side plate 63a is provided at around one side in the base longitudinal direction of the opening 69 (left side in the sheet of FIG. 8 ) in the side wall 61b of the main body 61.
  • the side plate 63b is provided at around the other side in the base longitudinal direction of the opening 69 (right side in the sheet of FIG. 8 ) in the side wall 61b of the main body 61.
  • the side plates 63a and 63b are provided to partially overlap the opening 69.
  • the side plates 63a and 63b are spaced apart from each other in the base longitudinal direction.
  • the central plate 64 is attached by a bolt 82 to a part of the side wall 61b of the main body 61, which is above the opening 69.
  • the central plate 64 is provided to partially overlap the opening 69.
  • the central plate 64 is provided between the side plates 63a and 63b in the base longitudinal direction.
  • the central plate 64 is spaced apart from the side plates 63a and 63b in the base longitudinal direction.
  • the entrances 66 (66a, 66b) of the yarns Y (Ya, Yb) into the heat retaining box 60 are constituted by a gap between the side plate 63a and the central plate 64 and a gap between the side plate 63b and the central plate 64.
  • the entrance 66a constituted by the gap between the side plate 63a and the central plate 64 is formed.
  • the entrance 66b constituted by the gap between the side plate 63b and the central plate 64 is formed.
  • the slits 67 are constituted by a gap between the side plate 63a and the central plate 64 and a gap between the side plate 63b and the central plate 64.
  • Each of the two slits 67a and 67b extends in a plane orthogonal to the extending direction.
  • the slit 67a is connected to the entrance 66a at the upper end and is open at the lower end.
  • the slit 67b is connected to the entrance 66b at the upper end and is open at the lower end.
  • a biasing member 83 is provided between the central plate 64 attached to the side wall 61b on one side in the extending direction and a head 82a of a bolt 82 inserted into a hole 64a of the central plate 64.
  • the biasing member 83 is a coil spring.
  • the biasing member 83 may be made of rubber.
  • the biasing member 83 may not be provided.
  • the central plate 64 is pressed onto the main body 61 by the biasing force of the biasing member 83.
  • an opening 64b is formed to be long along the up-down direction.
  • a protrusion 78 formed on a later-described end portion plate 79 is provided.
  • the lateral heat insulation members 71 and 73 and the central heat insulation member 72 are formed by, for example, plaster boards.
  • the lateral heat insulation members 71 and 73 and the central heat insulation member 72 extend along the extending direction. As shown in FIG. 4 , the lateral heat insulation members 71 and 73 and the central heat insulation member 72 are provided below the heating unit 50.
  • the lateral heat insulation members 71 and 73 and the central heat insulation member 72 are provided between the heating unit 50 and an opening 68 formed in the main body 61 of the heat retaining box 60. Between the heating unit 50 and the lower wall 61a of the main body 61, the lateral heat insulation members 71 and 73 and the central heat insulation member 72 are aligned in the base longitudinal direction.
  • the central heat insulation member 72 is detachably attached to the first heater 13 as described below.
  • the lateral heat insulation members 71 and 73 are not detachable from the first heater 13.
  • the lateral heat insulation members 71 and 73 are fixed to the heating unit 50 and the heat retaining box 60 by a screw, an adhesive, etc. In short, the lateral heat insulation members 71 and 73 are not moved in accordance with the detachment of the central heat insulation member 72.
  • the lateral heat insulation members 71 and 73 are provided on the respective sides of the central heat insulation member 72 in the base longitudinal direction.
  • the lateral heat insulation member 71 is provided on one side in the base longitudinal direction of the central heat insulation member 72.
  • the lateral heat insulation member 73 is provided on the other side in the base longitudinal direction of the central heat insulation member 72.
  • gaps between the central heat insulation member 72 and the lateral heat insulation members 71 and 73 function as yarn guide passages 58 (58a, 58b) used when the yarns Y are set in the first heater 13.
  • the gap between the lateral heat insulation member 71 and the central heat insulation member 72 functions as a yarn guide passage 58a through which the yarn Ya is guided to the yarn contact surface 55a of the yarn contact member 54a attached to the concave groove 53a.
  • the gap between the lateral heat insulation member 73 and the central heat insulation member 72 functions as a yarn guide passage 58b through which the yarn Yb is guided to the yarn contact surface 55b of the yarn contact member 54b attached to the concave groove 53b.
  • the width (length in the base longitudinal direction) of the yarn guide passage 58 is narrowed away from the concave groove 53 (i.e., narrowed downward) when viewed in the extending direction.
  • the central heat insulation member 72 is arranged to be movable in the up-down direction in accordance with the movement of the door 62.
  • the width W1 (length in the base longitudinal direction) of a yarn guide port i.e., an end portion on the side opposite to the concave groove 53 side) that is an inlet of the yarn Y in the yarn guide passage 58 (58a, 58b) is shorter than the width W2 (length in the base longitudinal direction) of the concave groove 53 (53a, 53b).
  • the central heat insulation member 72 is provided across two opposing areas 59a and 59b (indicated by two-dot chain lines in FIG. 10 ) which oppose, in the up-down direction, the respective concave grooves 53 (53a and 53b) neighboring to each other in the base longitudinal direction.
  • a part of the central heat insulation member 72 is provided in the opposing area 59a opposing the concave groove 53a, whereas another part of the central heat insulation member 72 is provided in an opposing area 59b opposing the concave groove 53b.
  • the lateral heat insulation members 71 and 73 are provided entirely outside the opposing areas 59a and 59b. In other words, the lateral heat insulation members 71 and 73 are provided at neither the opposing area 59a nor the opposing area 59b.
  • the central heat insulation member 72 When viewed in the extending direction, the central heat insulation member 72 has a substantially trapezoidal shape that is widened downward (i.e., away from the concave groove 53).
  • a straight line which extends along the up-down direction and passes through the center in the base longitudinal direction of the concave groove 53a is a virtual straight line S1 (indicated by a one-dot chain line in FIG. 10 ).
  • a straight line which extends along the up-down direction and passes through the center in the base longitudinal direction of the concave groove 53b is a virtual straight line S2 (indicated by a one-dot chain line in FIG. 10 ) .
  • S1 indicated by a one-dot chain line in FIG. 10
  • S2 indicated by a one-dot chain line in FIG. 10
  • an upper end portion of the central heat insulation member 72 (i.e., a portion corresponding to the upper side of the trapezoidal central heat insulation member 72) is positioned between the virtual straight lines S1 and S2.
  • the upper end portion of the central heat insulation member 72 stretches across the two opposing areas 59a and 59b. In other words, when viewed in the extending direction, the upper end portion of the central heat insulation member 72 opposes the two concave grooves 53a and 53b in the up-down direction.
  • a lower end portion of the central heat insulation member 72 When viewed in the extending direction, a lower end portion of the central heat insulation member 72 reaches the outside of each of the two opposing areas 59a and 59b. Assume that the length along the base longitudinal direction of the lower end portion of the central heat insulation member 72 when viewed in the extending direction is a length L1.
  • the length L1 of the lower end portion of the central heat insulation member 72 is longer than an interval L2 in the base longitudinal direction between (i) an end portion on one side (left side in the sheet of FIG. 10 ) in the base longitudinal direction of the concave groove 53a that is provided on the one side in the base longitudinal direction and (ii) an end portion on the other side (right side in the sheet of FIG. 10 ) in the base longitudinal direction of the concave groove 53b provided on the other side in the base longitudinal direction.
  • each of the lateral heat insulation members 71 and 73 has a substantially trapezoidal shape that is widened toward the concave groove 53.
  • a surface 71a on the other side in the base longitudinal direction of the lateral heat insulation member 71 that is on one side (left side in the sheet of FIG. 10 ) in the base longitudinal direction among the lateral heat insulation members 71 and 73 is tilted relative to a vertical surface that is orthogonal to the base longitudinal direction.
  • the surface 71a of the lateral heat insulation member 71 is tilted so that the upper end is on the other side (right side in the sheet of FIG. 10 ) in the base longitudinal direction of the lower end.
  • a surface 73a on one side in the base longitudinal direction of the lateral heat insulation member 73 that is on the other side (right side in the sheet of FIG. 10 ) in the base longitudinal direction among the lateral heat insulation members 71 and 73 is tilted relative to a vertical surface that is orthogonal to the base longitudinal direction.
  • the surface 73a of the lateral heat insulation member 73 is tilted so that the upper end is on one side (left side in the sheet of FIG. 10 ) in the base longitudinal direction of the lower end.
  • the interval in the base longitudinal direction between the end portions on the concave groove 53 side (i.e., the upper end portions) of the two surfaces 71a and 73a is an interval L3.
  • the interval in the base longitudinal direction between the end portions on the side opposite to the concave groove 53 side (i.e., the lower end portions) of the two surfaces 71a and 73a is an interval L4.
  • the interval L3 is shorter than the interval L4.
  • the end portion plate 79 is attached to each of the both end portions in the extending direction of the central heat insulation member 72.
  • the end portion plate 79 is attached to the central heat insulation member 72 such that the thickness direction of the end portion plate 79 is in parallel to the extending direction.
  • the protrusion 78 is formed on a surface of the end portion plate 79, which is on the side opposite to the central heat insulation member 72 side in the extending direction.
  • the protrusion 78 extend along the up-down direction.
  • the protrusion 78 is provided in the opening 64b of the central plate 64.
  • the protrusion 78 provided in the opening 64b has side surfaces 78a which are in contact with the edge portions of the opening 64b extending in the up-down direction.
  • the protrusion 78 is slidable and can move up and down in the opening 64b.
  • the central heat insulation member 72 moves up or down relative to the central plate 64, in sync with the movement of the door 62.
  • the protrusion 78 slides and moves up or down in the opening 64b formed in the central plate 64.
  • the opening 64b guides the movement of the central heat insulation member 72 in the up-down direction.
  • the central plate 64 attached to the side wall 61b on one side in the extending direction is switchable between a supporting position (indicated by solid lines in FIG. 9 ) where the central heat insulation member 72 is supported and a non-supporting position (indicated by dotted lines in FIG. 9 ) where the central heat insulation member 72 is not supported.
  • a supporting position indicated by solid lines in FIG. 9
  • a non-supporting position indicated by dotted lines in FIG. 9
  • the central plate 64 is moved from the supporting position to the non-supporting position.
  • the upper end portion of the central plate 64 is biased by the biasing member 83 toward the central heat insulation member 72.
  • the position of the upper end portion of the central plate 64 is almost identical with the position when the plate is at the supporting position, and the central plate 64 is tilted relative to a plane orthogonal to the extending direction so that the lower end portion is far from the central heat insulation member 72 as compared to the upper end portion.
  • the biasing member 83 applies a biasing force in a direction from the non-supporting position to the supporting position (i.e., a direction toward the central heat insulation member 72).
  • the central plate 64 returns from the non-supporting position to the supporting position.
  • the central heat insulation member 72 becomes detachable from the first heater 13.
  • FIG. 12(c) when the central heat insulation member 72 is detached, the two opposing areas 59a and 59b opposing the respective two concave grooves 53a and 53b in the up-down direction become entirely exposed.
  • a substantially trapezoidal space that is widened downward i.e., away from the concave groove 53 appears between the two lateral heat insulation members 71 and 73.
  • the operator moves the door 62 of the heat retaining box 60 from a closed position shown in FIG. 12(a) to an open position shown in FIG. 12(b) .
  • the central heat insulation member 72 is no longer pressed upward and moves down due to its own weight.
  • the central heat insulation member 72 is supported by the central plates 64 as shown in FIG. 9 .
  • the operator moves the central plate 64 from the supporting position (indicated by solid lines in FIG. 9 ) to the non-supporting position (indicated by dotted lines in FIG. 9 ) and detaches the central heat insulation member 72 from the first heater 13 as shown in FIG. 12(c) .
  • the two opposing areas 59a and 59b opposing the respective two concave grooves 53a and 53b of the heating unit 50 in the up-down direction become entirely exposed. In other words, a space appears below the two concave grooves 53a and 53b.
  • the lateral heat insulation members 71 and 73 are not detachable from the first heater 13.
  • the lateral heat insulation members 71 and 73 are therefore not detached from the first heater 13.
  • the operator moves the fixing plates 41 from the contact position (shown in FIG. 7(a) ) to the retracted position (shown in FIG. 7(b) ), and detaches the yarn contact members 54 downward.
  • the first heater 13 of the present embodiment includes the heating member 52, the yarn contact members 54a and 54b having the yarn contact surfaces 55a and 55b capable of making contact with the yarns Y, and the lateral heat insulation members 71 and 73 and the central heat insulation member 72 that are aligned in the base longitudinal direction.
  • the yarn contact members 54a and 54b are detachably attached to the respective concave grooves 53a and 53b which are defined by the heating member 52, extend along the predetermined extending direction, and are open on one side (i.e., downward) in the up-down direction orthogonal to the extending direction.
  • the gaps between the central heat insulation member 72 and the lateral heat insulation members 71 and 73 constitute the yarn guide passages 58a and 58b through which the yarns Ya and Yb are guided to the respective two yarn contact members 54a and 54b attached to the two concave grooves 53a and 53b.
  • the central heat insulation member 72 is provided at the opposing areas 59a and 59b opposing the respective concave grooves 53a and 53b in the up-down direction.
  • the central heat insulation member 72 provided at the opposing areas 59a and 59b is detachable.
  • the lateral heat insulation members 71 and 73 and the central heat insulation member 72 suppress the dissipation of heat to the outside through the internal spaces of the concave grooves 53a and 53b, with the result that the power consumption is decreased. Furthermore, when the yarns Ya and Yb are guided to the yarn contact members 54a and 54b attached to the concave grooves 53a and 53b in order to set the yarns Ya and Yb, it is possible to guide the yarns Ya and Yb through the yarn guide passages 58a and 58b without detaching the central heat insulation member 72.
  • the lateral heat insulation members 71 and 73 and the central heat insulation member 72 suppress the dissipation of heat to the outside, with the result that the power consumption is decreased. Furthermore, by detaching the central heat insulation member 72 provided at the opposing areas 59a and 59b, the opposing areas 59a and 59b opposing the concave grooves 53a and 53b in the up-down direction are exposed. Consequently, it becomes possible to detach the yarn contact members 54a and 54b attached to the concave grooves 53a and 53b, in the downward direction.
  • the lateral heat insulation members 71 and 73 are provided outside the opposing areas 59a and 59b and are arranged not to be detachable. Furthermore, the lateral heat insulation members 71 and 73 do not move in accordance with the detachment of the central heat insulation member 72 provided in the opposing areas 59a and 59b. These arrangements prevent the lateral heat insulation members 71 and 73 from being erroneously and unnecessarily detached when the yarn contact members 54 are detached from the concave grooves 53.
  • the length in the base longitudinal direction of the yarn guide port that is an inlet of the yarn Y in the yarn guide passage 58 i.e., the width W1 of the yarn guide port of the yarn guide passage 58
  • the width W1 of the yarn guide port of the yarn guide passage 58 is arranged to be narrow. It is therefore possible to reliably suppress the dissipation of heat from the heat source 51 to the outside.
  • one central heat insulation member 72 is provided at one opposing area 59a (59b).
  • the opposing area 59a (59b) opposing at least one concave groove 53 is exposed, and the yarn contact member 54 attached to that concave groove 53 becomes detachable. Therefore the detachment of the yarn contact member 54 is simplified.
  • the first heater 13 of the present embodiment includes the central heat insulation member 72 provided at the opposing areas 59a and 59b of the concave grooves 53a and 53b and the lateral heat insulation members 71 and 73 that are provided to be aligned with the central heat insulation member 72 in the base longitudinal direction.
  • the surface 72a of the central heat insulation member 72 opposing the lateral heat insulation member 71 is tilted so that, relative to the virtual straight line S1 that extends along the up-down direction and passes through the center in the base longitudinal direction of the concave groove 53a, the lower end portion is on the lateral heat insulation member 71 side whereas the upper end portion is on the side opposite to the lateral heat insulation member 71.
  • the surface 72b of the central heat insulation member 72 opposing the lateral heat insulation member 73 is tilted so that, relative to the virtual straight line S2 that extends along the up-down direction and passes through the center in the base longitudinal direction of the concave groove 53b, the lower end portion is on the lateral heat insulation member 73 side whereas the upper end portion is on the side opposite to the lateral heat insulation member 73.
  • the surface 72a of the central heat insulation member 72 opposing the lateral heat insulation member 71 is a surface orthogonal to the base longitudinal direction and the surface 72a is on the lateral heat insulation member 71 side of the virtual straight line S1.
  • the upper end portion of the central heat insulation member 72 interferes with the yarn Ya.
  • the farther the surface 72a is from the lateral heat insulation member 71 the smaller a part of the concave groove 53a opposing the central heat insulation member 72 is.
  • the present embodiment suppresses the interference between the upper end portion of the central heat insulation member 72 and the yarn Y when the yarn Y is guided through the yarn guide passage 58. At the same time, the part of the concave groove 53 opposing the central heat insulation member 72 has a sufficient size, and the dissipation of heat from the heat source 51 to the outside is reliably suppressed.
  • one central heat insulation member 72 is provided to stretch across the two opposing areas 59a and 59b opposing the respective concave grooves 53a and 53b in the up-down direction.
  • the two opposing areas 59a and 59b opposing the respective two concave grooves 53a and 53b in the up-down direction are exposed, and the yarn contact members 54a and 54b attached to these two concave grooves 53a and 53b become detachable. Therefore the detachment of the yarn contact members 54a and 54b is simplified.
  • the central heat insulation member 72 when viewed in the extending direction, has a substantially trapezoidal shape that is widened downward (i.e., away from the concave groove 53). Furthermore, when viewed in the extending direction, the upper end portion of the central heat insulation member 72 is positioned between the virtual straight lines S1 and S2. In this arrangement, when the yarns Ya and Yb are guided through the yarn guide passages 58a and 58b to the yarn contact members 54a and 54b attached to the concave grooves 53a and 53b, interference between the upper end portion (end portion on the concave groove 53 side) of the central heat insulation member 72 and the yarn Ya is less likely to occur.
  • the upper end portion of the central heat insulation member 72 opposes the two concave grooves 53a and 53b in the up-down direction.
  • the yarns Ya and Yb are guided through the yarn guide passages 58a and 58b to the yarn contact members 54a and 54b attached to the concave grooves 53a and 53b, the yarns Ya and Yb are less likely to be hooked by the edges of the concave grooves 53a and 53b.
  • the yarns Ya and Yb are therefore smoothly guided from the yarn guide passages 58a and 58b to the concave grooves 53a and 53b.
  • the lower end portion of the central heat insulation member 72 when viewed in the extending direction, extends to reach the outside of the two opposing areas 59a and 59b.
  • the space formed between the two lateral heat insulation members 71 and 73 after the central heat insulation member 72 provided between the two lateral heat insulation members 71 and 73 is detached extends to reach at least the outside of the two opposing areas 59a and 59b.
  • the space where the detachment of the yarn contact members 54 is performed is large, and hence the detachment can be easily done.
  • the two surfaces 71a and 73a of the two lateral heat insulation members 71 and 73, which oppose the central heat insulation member 72 in the base longitudinal direction, are arranged so that the interval L3 between the upper end portions in the base longitudinal direction is shorter than the interval L4 between the lower end portions in the base longitudinal direction. According to this arrangement, after the central heat insulation member 72 provided between the two lateral heat insulation members 71 and 73 is detached, a space widening away from the concave groove 53 appears between the two lateral heat insulation members 71 and 73. On this account, the detachment of the yarn contact members 54 downward can be easily done.
  • the first heater 13 of the present embodiment further includes the central plates 64 that are capable of supporting the central heat insulation member 72.
  • the central plate 64 is switchable between the supporting position where the central heat insulation member 72 is supported and the non-supporting position where the central heat insulation member 72 is not supported. In this arrangement, as the central plate 64 is moved from the supporting position to the non-supporting position, the central heat insulation member 72 becomes easily detachable.
  • the first heater 13 of the present embodiment further includes the biasing member 83 which is able to apply, to the central plate 64, a biasing force in a direction from the non-supporting position to the supporting position. This arrangement makes it possible avoid unintentional movement of the central plate 64 from the supporting position to the non-supporting position.
  • the false-twist texturing machine 1 of the present embodiment includes: the yarn supplying unit 2 configured to supply the yarns Y; the processing unit 3 including devices including the first heater 13 and configured to false-twist the yarns Y supplied from the yarn supplying unit 2; and the winding device 21 configured to wind the yarns Y processed by the processing unit 3.
  • the winding device 21 is attached to the winding base 9, devices of the processing unit 3 are attached to the main base 8 opposing the winding base 9 over the working space A and the supporting frame 10 connecting the upper part of the winding base 9 with the upper part of the main base 8, and the mouth of the concave groove 53 formed in the first heater 13 opposes the working space A.
  • the yarn contact members 54 when the yarn contact members 54 are detached from the concave grooves 53, the yarn contact members 54 do not interfere with other devices. Therefore the detachment of the yarn contact members 54 can be done easily. Furthermore, when the yarn contact members 54 are detached, it is unnecessary to move members and devices on the yarn path or to rotate the first heater 13. On this account, a deviation of the yarn path due to the detachment of the yarn contact members 54 is less likely to occur.
  • the false-twist texturing machine 1 of the present embodiment includes: the twist-stopping guide 12 which is provided upstream of the first heater 13 in the yarn running direction and supports the yarn Y to be runnable; and the false-twisting device 15 which is provided downstream of the first heater 13 in the yarn running direction and supports the yarn Y to be runnable.
  • the yarn path at the concave groove 53 is formed by the twist-stopping guide 12 and the false-twisting device 15. According to the embodiment, the yarn Y can be guided to the concave groove 53 by threading the yarn Y to the twist-stopping guide 12 and the false-twisting device 15.
  • one yarn contact member 54 is detachably attached to each concave groove 53.
  • the disclosure, however, is not limited to this arrangement.
  • Plural yarn contact members 54 may be detachably attached to one concave groove 53.
  • one central heat insulation member 72 is provided to stretch across two opposing areas 59a and 59b.
  • the disclosure is not limited to this arrangement. Different heat insulation members may be provided at the respective two opposing areas 59a and 59b. In this case, each of the heat insulation members provided at the opposing areas 59a and 59b is arranged to be detachable.
  • one heat insulation member is provided at one opposing area 59a (59b)
  • plural heat insulation members may be provided at one opposing area 59a (59b).
  • all of the heat insulation members provided at the opposing area 59a (59b) are arranged to be detachable.
  • a part of one central heat insulation member 72 is provided at one opposing area 59a (59b).
  • the entirety of one central heat insulation member 72 may be provided at one opposing area 59a (59b).
  • the lateral heat insulation members 71 and 73 are provided outside the opposing areas 59a and 59b and are arranged not to be detachable.
  • the disclosure is not limited to this arrangement.
  • only at least one of the members is required not to be detachable.
  • only one of the lateral heat insulation members 71 and 73 is required not to be detachable.
  • Both of the lateral heat insulation members 71 and 73 may be detachable.
  • no heat insulation member may be provided outside the opposing areas 59a and 59b.
  • the surface 72a of the central heat insulation member 72 is tilted so that, relative to the virtual straight line S1, the lower end portion is on the lateral heat insulation member 71 side whereas the upper end portion is on the side opposite to the lateral heat insulation member 71.
  • the surface 72b of the central heat insulation member 72 is tilted so that, relative to the virtual straight line S2, the lower end portion is on the lateral heat insulation member 73 side whereas the upper end portion is on the side opposite to the lateral heat insulation member 73.
  • the relationship between the surface 72a and the virtual straight line S1 and the relationship between the surface 72b and the virtual straight line S2 are not limited to these arrangements.
  • the surface 72a may be entirely on the lateral heat insulation member 71 side of the virtual straight line S1.
  • the surface 72a may be entirely on the side opposite to the lateral heat insulation member 71 relative to the virtual straight line S1.
  • the number of the concave grooves 53 in the heating unit 50 is not limited to this. In this regard, the number of the concave grooves 53 may be one. The number of the concave grooves 53 may be three or more.
  • a heating unit 150 shown in FIG. 13 is provided with one concave groove 53.
  • a first heat insulation member 171 is provided at an opposing area 59 of the concave groove 53.
  • the first heat insulation member 171 is arranged to be detachable.
  • a second heat insulation member 172 is provided to be aligned with the first heat insulation member 171 in the base longitudinal direction.
  • the second heat insulation member 172 is provided on one side of the first heat insulation member 171 in the base longitudinal direction (i.e., on the left side in the sheet of FIG. 13 ).
  • the second heat insulation member 172 is arranged not to be detachable.
  • the gap between the first heat insulation member 171 and the second heat insulation member 172 functions as a yarn guide passage 58 through which a yarn Y is guided to a yarn contact member 54 attached to the concave groove 53.
  • a straight line extending along the up-down direction and passing through the center in the base longitudinal direction of the concave groove 53 is a virtual straight line S3.
  • a surface 171a of the first heat insulation member 171, which opposes the second heat insulation member heat insulation member 172 is tilted relative to the virtual straight line S3.
  • the surface 171a is arranged so that the lower end portion is on the second heat insulation member 172 side of the virtual straight line S3 and the upper end portion is on the side opposite to the second heat insulation member 172.
  • the yarn contact member 54 attached to the concave groove 53 can be detached downward after the first heat insulation member 171 is detached. Furthermore, the interference between the upper end portion of the first heat insulation member 171 and the yarn Y is suppressed when the yarn Y is guided through the yarn guide passage 58. At the same time, the part of the concave groove 53 opposing the first heat insulation member 171 has a sufficient size, and the dissipation of heat from the heat source 51 to the outside is reliably suppressed.
  • the embodiment above explained the case where three heat insulation members (the lateral heat insulation members 71 and 73 and the central heat insulation member 72) are aligned along the base longitudinal direction. Furthermore, the modification of the embodiment explained the case where two heat insulation members (the first heat insulation member 171 and the second heat insulation member 172) are aligned along the base longitudinal direction.
  • the number of the heat insulation members is not limited to them. The number of the heat insulation members is any number as long as it is two or more. Four or more heat insulation members may be aligned along the base longitudinal direction.
  • the central heat insulation member 72 when viewed in the extending direction, has a trapezoidal shape that is widened downward, the disclosure is not limited to this arrangement.
  • the central heat insulation member 72 may be rectangular in shape and is long in the up-down direction, when viewed in the extending direction.
  • the central heat insulation member 72 may have a trapezoidal shape that is widened upward, when viewed in the extending direction.
  • the disclosure is not limited to this arrangement.
  • the upper end portion of the central heat insulation member 72 may extend to reach the outside of the virtual straight lines S1 and S2.
  • the disclosure is not limited to this arrangement.
  • the upper end portion of the central heat insulation member 72 may oppose only one of the two concave grooves 53a and 53b in the up-down direction.
  • the upper end portion of the central heat insulation member 72 may not oppose any of the two concave grooves 53a and 53b in the up-down direction.
  • the disclosure is not limited to this arrangement.
  • an end portion on one side (left side in the sheet of FIG. 10 ) in the base longitudinal direction of the lower end portion of the central heat insulation member 72 may be positioned at the opposing area 59a.
  • An end portion on the other side (right side in the sheet of FIG. 10 ) in the base longitudinal direction of the lower end portion of the central heat insulation member 72 may be positioned at the opposing area 59b.
  • the length in the base longitudinal direction of the yarn guide port that is an inlet of the yarn Y in the yarn guide passage 58 is shorter than the length in the base longitudinal direction of the concave groove 53 (i.e., the width W2 of the concave groove 53).
  • the disclosure is not limited to this arrangement.
  • the yarn guide passage 58 is at least partially shorter than the concave groove 53 in the base longitudinal direction. In the entirety of the yarn guide passage 58, the yarn guide passage 58 may be longer than the concave groove 53 in the base longitudinal direction.
  • the surface 71a of the lateral heat insulation member 71 and the surface 73a of the lateral heat insulation member 73 are arranged so that the interval L3 between the upper end portions in the base longitudinal direction is shorter than the interval L4 between the lower end portions in the base longitudinal direction.
  • the disclosure is not limited to this arrangement.
  • the interval L3 may be identical with the interval L4.
  • the interval L3 may be longer than the interval L4.
  • the central heat insulation member 72 becomes detachable from the first heater 13.
  • the disclosure is not limited to this arrangement.
  • the central heat insulation member 72 may be fixed to the first heater 13 by a detachable fixing member, and the central heat insulation member 72 may be detached from the first heater 13 by detaching the fixing member.
  • the yarn Y makes contact with the yarn contact surface 55 of the heating unit 50 and receives heat from the heating member 52 through the yarn contact surface 55.
  • the disclosure is not limited to this arrangement.
  • the heating unit 50 may adopt contactless heating of the yarn Y by means of heated air.
  • yarn guides (equivalent to the yarn contact member of the present invention) capable of making contact with the yarn Y and configured to guide the yarn Y are detachably attached in place of each of the yarn contact members 54a and 54b having the yarn contact surfaces 55a and 55b.
  • the yarn path at the concave groove 53 of the first heater 13 is formed by the twist-stopping guide 12 and the false-twisting device 15.
  • the disclosure is not limited to this arrangement.
  • a member that is provided upstream of the first heater 13 in the yarn running direction and supports the yarn Y to be runnable may be provided in addition to the twist-stopping guide 12.
  • a member that is provided downstream of the first heater 13 in the yarn running direction and supports the yarn Y to be runnable may be provided in addition to the false-twisting device 15.
  • the yarn heater of the present invention is applied to the false-twist texturing machine 1 configured to false-twist the yarns Y.
  • the yarn heater of the present invention is applicable to a processor configured to perform, for yarns formed of synthetic fibers, various processes such as yarn combining in addition to false twisting.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP23209337.7A 2022-11-30 2023-11-13 Garnheizer und falschdralltexturiermaschine Pending EP4382648A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2022191392 2022-11-30

Publications (1)

Publication Number Publication Date
EP4382648A1 true EP4382648A1 (de) 2024-06-12

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ID=88833774

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Application Number Title Priority Date Filing Date
EP23209337.7A Pending EP4382648A1 (de) 2022-11-30 2023-11-13 Garnheizer und falschdralltexturiermaschine

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Country Link
EP (1) EP4382648A1 (de)
JP (1) JP2024079595A (de)
CN (1) CN118109935A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905295A1 (de) * 1997-09-29 1999-03-31 Murata Kikai Kabushiki Kaisha Heizeinrichtung zum Erwärmen eines Fadens
JP2002194631A (ja) 2000-10-12 2002-07-10 Toray Eng Co Ltd 仮撚加工機
WO2018007294A1 (de) * 2016-07-08 2018-01-11 Oerlikon Textile Gmbh & Co. Kg Heizvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905295A1 (de) * 1997-09-29 1999-03-31 Murata Kikai Kabushiki Kaisha Heizeinrichtung zum Erwärmen eines Fadens
JP2002194631A (ja) 2000-10-12 2002-07-10 Toray Eng Co Ltd 仮撚加工機
WO2018007294A1 (de) * 2016-07-08 2018-01-11 Oerlikon Textile Gmbh & Co. Kg Heizvorrichtung

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JP2024079595A (ja) 2024-06-11
CN118109935A (zh) 2024-05-31

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Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR