CN115449933A

CN115449933A - Heating device and yarn processing machine

Info

Publication number: CN115449933A
Application number: CN202210570805.4A
Authority: CN
Inventors: 堀本尭幸; 北川重树
Original assignee: TMT Machinery Inc
Current assignee: TMT Machinery Inc
Priority date: 2021-06-09
Filing date: 2022-05-24
Publication date: 2022-12-09
Also published as: TW202248485A; EP4102934A1; EP4102934B1; JP2022188749A

Abstract

A heating device and a yarn processing machine are provided, which can restrain the temperature reduction of a yarn running space caused by external disturbance and can quickly raise the temperature of the yarn running space even if the temperature of the yarn running space is reduced. A1 st heating device (13) (heating device) for heating a yarn (Y) running in a yarn running space (S) is provided with a heat source (51) and a heating part (52). The heating unit (52) is configured to be heated by a heat source (51) and is configured to form a yarn running space (S) extending at least in a predetermined 1 st direction. The heating section (52) has a 1 st heating member (53) made of a 1 st material and a 2 nd heating member (54) made of a 2 nd material. The 2 nd heating member (54) is disposed at least between the heat source (51) and the yarn running space (S) in a cross section orthogonal to the 1 st direction. The volumetric specific heat of the 2 nd material is lower than the volumetric specific heat of the 1 st material.

Description

Heating device and yarn processing machine

Technical Field

The present invention relates to a heating device for heating a yarn and a yarn processing machine including the heating device.

Background

Patent document 1 discloses a heat treatment device (heating device) for heating a yarn during yarn processing such as false twisting. The heating device includes a sheathed heater (heat source) and a heater main body (heating unit). The heating unit is configured to be heated by a heat source and to form a predetermined yarn running space in which the yarn runs. More specifically, the heating portion has a heating plate made of a copper alloy. Generally, a copper alloy has a large heat capacity to some extent. Therefore, the heating portion can be suppressed to some extent from being cooled by external disturbance (for example, entry of external air into the yarn running space for some reason).

Patent document 1: japanese laid-open patent publication No. 2002-146640

In general, in order to reliably suppress temperature variation of the heating portion due to external disturbance, the heat capacity of the heating portion may be made very large. However, in this case, the heating apparatus may become very large in size. Therefore, in consideration of the balance between the suppression of the increase in size of the apparatus and the suppression of the temperature variation due to the external disturbance, the heating unit is generally designed to have a certain degree of heat capacity. However, in such a configuration, if the temperature of the heating section is once lowered by external disturbance, the temperature of the yarn running space and/or a member forming the yarn running space (hereinafter, referred to as a yarn running space or the like) is also lowered. In this case, it may take time to return the temperatures of the heating section, the yarn running space, and the like to the set temperatures.

Disclosure of Invention

The invention aims to restrain the temperature reduction of a yarn running space and the like caused by external interference and quickly raise the temperature of the yarn running space and the like even if the temperature of the yarn running space and the like is reduced.

The heating device of claim 1 includes: a heat source; a heating unit configured to be heated by the heat source and configured to form a yarn running space extending at least in a predetermined 1 st direction, the heating unit heating the yarn running in the yarn running space, the heating unit including: a 1 st heating member configured not to contact the yarn running in the yarn running space and made of a 1 st material; and a 2 nd heating member which is disposed at least between the heat source and the yarn running space in a cross section orthogonal to the 1 st direction, is disposed so as not to contact the yarn running in the yarn running space, and is composed of a 2 nd material having a lower volumetric specific heat than the 1 st material.

By using a material having a certain higher volumetric specific heat as the 1 st material constituting the 1 st heating member, a decrease in temperature of the heating portion due to external disturbance can be suppressed to some extent. Further, in the present invention, the temperature of the 2 nd heating member made of the 2 nd material having a lower specific heat capacity can be raised more rapidly than that of the 1 st heating member. This makes it possible to rapidly heat the yarn running space and the like via the 2 nd heating member disposed between the heat source and the yarn running space (the detailed definition will be described later). Therefore, such rapid heating can suppress a decrease in temperature of the yarn running space or the like due to external disturbance. Further, even if the temperature of the yarn running space or the like is lowered by external disturbance, the temperature of the yarn running space or the like can be rapidly raised.

The heating device according to claim 2 is characterized in that, in the heating device according to claim 1, the heating member 2 is in contact with the heat source.

In the present invention, the heat generated by the heat source can be quickly transferred to the 2 nd heating member. Thus, the 2 nd heating member can be efficiently heated.

The heating apparatus according to claim 3 is characterized in that, in the 1 st or 2 nd invention, the 2 nd heating member is in contact with the 1 st heating member.

For example, the heat source for heating the 1 st heating member and the heat source for heating the 2 nd heating member may be provided separately, and the 2 nd heating member and the 1 st heating member may be disposed separately. However, in this case, the manufacturing cost of the heating device increases due to the increase in the component cost of the heat source. In the present invention, the 2 nd heating member is in contact with the 1 st heating member. Therefore, the 1 st heating member can be rapidly heated via the 2 nd heating member while suppressing an increase in manufacturing cost.

The heating apparatus according to claim 4 is characterized in that, in any one of the above 1 st to 3 rd inventions, a ratio of a heat capacity of the 2 nd heating member to a heat capacity of the 1 st heating member is 20% or more and 40% or less.

If the heat capacity of the 2 nd heating member is relatively excessively small, if the temperature of the heating section decreases due to external disturbance, it may take time until the temperature of the yarn running space or the like increases again. However, if the heat capacity of the 2 nd heating member is relatively too large, the temperature of the heating section may also easily fluctuate due to small external disturbances, and the temperature of the yarn running space or the like may become unstable instead. In the present invention, the heat capacity of the 2 nd heating member is not excessively large and is not excessively small with respect to the heat capacity of the 1 st heating member. Therefore, the heating section can be reinforced to some extent against external disturbances, and the temperature of the yarn running space and the like can be rapidly increased.

The heating device according to claim 5 is the heating device according to any one of claims 1 to 4, wherein the 2 nd material includes a fiber material.

In the present invention, the thermal conductivity of the 2 nd material can be made anisotropic by orienting the fiber material in a specific direction. Therefore, heat can be transferred very quickly in a direction in which heat is particularly easily transferred.

The heating device according to claim 6 is characterized in that, in the above-described 5 th invention, the fiber material is carbon fiber.

Carbon fibers are lightweight materials with high thermal conductivity. Therefore, heat can be transferred very quickly in a direction in which heat is easily transferred. In addition, the heating device can be made lightweight.

The heating device according to claim 7 is characterized in that, in the above-described invention 6, the carbon fibers are pitch-based fibers.

Pitch-based carbon fibers and PAN-based carbon fibers are generally known as carbon fibers. Generally, pitch-based carbon fibers have higher thermal conductivity than PAN-based carbon fibers. In the present invention, the thermal conductivity can be further improved by using pitch-based carbon fibers as the carbon fibers.

The heating device according to claim 8 is the heating device according to claim 6 or 7, wherein the 2 nd material is a composite material of the carbon fiber and graphite.

The composite material of carbon fiber and graphite has very high thermal conductivity. Therefore, by using a composite material of carbon fiber and graphite as the 2 nd material, the thermal conductivity can be further improved.

The heating device according to claim 9 is characterized in that, in the above 6 th or 7 th aspect, the 2 nd material is a composite material of the carbon fiber and a resin.

The composite material of carbon fiber and resin is cheaper than the composite material of carbon fiber and graphite. Therefore, by using a composite material of carbon fiber and resin as the 2 nd material, an increase in the manufacturing cost of the heating device can be suppressed.

A heating device according to claim 10 is the heating device according to any one of claims 1 to 9, wherein the 2 nd heating member is disposed so as to extend at least in the 1 st direction, and the 2 nd material has a higher thermal conductivity in at least the 1 st direction than the 1 st material.

In the present invention, heat can be rapidly transferred in the 1 st direction via the 2 nd heating member. Therefore, temperature variations in the yarn running space in the 1 st direction and the like can be suppressed.

A heating device according to claim 11 is characterized in that, in any one of the 1 st to 10 th inventions, when a direction in which a predetermined virtual straight line extending from the heat source toward the wire running space extends is defined as a 2 nd direction in a cross section orthogonal to the 1 st direction, the 2 nd material has a higher thermal conductivity in at least the 2 nd direction than the 1 st material.

In the present invention, heat can be rapidly transferred from the heat source to the yarn running space or the like via the 2 nd heating member. Therefore, the temperature of the yarn running space can be rapidly increased.

The heating device according to claim 12 is characterized in that, in any one of the 1 st to 11 th inventions, the heating section includes a contact member extending at least in the 1 st direction and configured to contact the wire.

In the configuration in which the contact member is provided as in the present invention, the temperature of the contact member can be efficiently raised by rapidly raising the temperature of the 2 nd heating member.

The heating apparatus according to claim 13 is characterized in that, in the above-described 12 th invention, the contact member is in contact with the 2 nd heating member.

In the present invention, the contact member can be efficiently heated by heat conduction between the contact member and the 2 nd heating member whose temperature is rapidly raised.

The heating device according to claim 14 is characterized in that, in the 12 th or 13 th aspect, the contact member is configured to be attachable to and detachable from the heating unit.

In general, when a yarn is processed while being run, an oil is applied to the yarn in order to smoothly run the yarn. Since such oil and/or dross may be deposited on the contact member to prevent the normal running of the yarn, the contact member needs to be periodically cleaned. In the present invention, since the contact member can be temporarily detached from the heating section, the efficiency of maintenance such as cleaning (removal of oil agent and the like) of the contact member can be greatly improved.

The yarn processing machine according to claim 15 is characterized by comprising: the heating device according to any one of the above 1 st to 14 th aspects; a yarn deformation imparting device for imparting deformation to the yarn; and a yarn feeding device configured to feed the yarn to the heating device and the yarn deformation imparting device, to advance the yarn, and to process the yarn while advancing the yarn.

In the present invention, it is possible to suppress the heating temperature required for processing the wire from varying due to external disturbances. Therefore, the variation in the quality of the yarn processed by the yarn processing machine can be suppressed.

Drawings

Fig. 1 is a side view of a false twist texturing machine for carrying out the method of producing a textured yarn according to the present embodiment.

FIG. 2 is a schematic view of the false twist texturing machine being deployed along the path of the yarn.

FIGS. 3 (a) to (d) are explanatory views showing the heating apparatus 1.

Fig. 4 is an enlarged view of fig. 3 (b).

FIG. 5 is a table showing the physical properties of the heating member 1 and the heating member 2.

FIG. 6 is a table showing physical properties of the

heating members

1 and 2 according to a modification.

Fig. 7 is a cross-sectional view of the 1 st heating device of another modification orthogonal to the 1 st direction.

Description of the symbols:

1: a false twist processing machine (yarn processing machine); 11: 1 st feeding roller (thread conveying device); 13: 1 st heating means (heating means); 15: a false twisting device (yarn texturing device); 51: a heat source; 52: a heating section; 53: 1, heating parts; 54: a 2 nd heating member; 55: a contact block (contact member); s: a filament advancing space; y: and (4) silk threads.

Detailed Description

Next, embodiments of the present invention will be explained. The vertical direction of the paper in fig. 1 is the machine body longitudinal direction, and the horizontal direction of the paper is the machine body width direction. The direction orthogonal to both the machine body longitudinal direction and the machine body width direction is set as the vertical direction (vertical direction) in which gravity acts. The longitudinal direction and the width direction of the body are directions substantially parallel to the horizontal direction.

(integral constitution of false twist processing machine)

First, the overall configuration of a false twist texturing machine 1 (a yarn texturing machine according to the present invention) for carrying out the method of producing a textured yarn according to the present embodiment will be described with reference to fig. 1 and 2. FIG. 1 is a side view of a false twist texturing machine 1. FIG. 2 is a schematic view of the false twist texturing machine 1 being unwound along the path of the yarn Y (yarn path).

The false twist processing machine 1 is configured to be capable of false twisting a yarn Y made of synthetic fiber. The yarn Y is, for example, a multifilament yarn composed of a plurality of filaments. Alternatively, the yarn Y may be composed of 1 filament. The false twist processing machine 1 includes a yarn feeding section 2, a processing section 3, and a winding section 4. The yarn feeder 2 is configured to be able to feed the yarn Y. The working section 3 is configured to draw the yarn Y from the yarn feeding section 2 and perform false twisting. The winding unit 4 is configured to wind the yarn Y processed by the processing unit 3 around the winding bobbin Bw. A plurality of components included in the yarn feeding section 2, the processing section 3, and the winding section 4 are arranged in the longitudinal direction of the machine body (see fig. 2). The machine longitudinal direction is a direction perpendicular to a running surface (paper surface in fig. 1) of the yarn Y formed by the yarn path from the yarn feeding unit 2 to the winding unit 4 through the processing unit 3.

The yarn feeding section 2 has a creel 7 for holding a plurality of yarn feeding packages Ps, and supplies a plurality of yarns Y to the processing section 3. The processing unit 3 is configured to draw out a plurality of yarns Y from the yarn feeding unit 2 and perform processing. The processing section 3 is configured such that, for example, a 1 st feed roller 11 (a yarn feeding device of the present invention), a twist stop yarn guide 12, a 1 st heating device 13 (a heating device of the present invention), a cooling device 14, a false twisting device 15 (a yarn texturing device of the present invention), a 2 nd feed roller 16, a crosser 17, a 3 rd feed roller 18, a 2 nd heating device 19, and a 4 th feed roller 20 are arranged in this order from the upstream side in the running direction of the yarn. The winding section 4 has a plurality of winding devices 21. Each winding device 21 winds the yarn Y false-twisted by the processing unit 3 around the winding bobbin Bw to form a winding package Pw.

The false twist processing machine 1 has a main body 8 and a winding table 9 arranged at intervals in the body width direction. The main body 8 and the winding table 9 are provided to extend substantially the same length in the longitudinal direction of the body. The main body 8 and the winding table 9 are disposed so as to face each other in the body width direction. The false twist texturing machine 1 has a unit cell called a span which includes a set of main bodies 8 and a winding table 9. In one span, each device is arranged to simultaneously perform false twisting on a plurality of yarns Y running in parallel in the longitudinal direction of the machine body. The span of the false twist texturing machine 1 is arranged symmetrically with respect to the center line C of the main body 8 in the machine width direction (the main body 8 is shared by the left and right spans). Further, the plurality of spans are arranged in the body length direction.

(constitution of processing portion)

The structure of the processing section 3 will be described with reference to fig. 1 and 2. The 1 st feed roller 11 is configured to unwind the yarn Y from the yarn feed package Ps attached to the yarn feed unit 2 and feed the yarn Y to the 1 st heating device 13. As shown in fig. 2, the 1 st feed roller 11 is configured to feed, for example, 1 yarn Y to the 1 st heating device 13. Alternatively, the 1 st feed roller 11 may be configured to be able to feed a plurality of adjacent yarns Y to the downstream side in the yarn running direction. The twist stopping yarn guide 12 is configured so that the twist applied to the yarn Y by the false twisting device 15 does not propagate upstream of the twist stopping yarn guide 12 in the yarn running direction.

The 1 st heating device 13 is configured to heat the yarn Y fed from the 1 st feed roller 11. As shown in fig. 2, the 1 st heating device 13 is configured to be able to heat two yarns Y, for example. The more detailed structure of the 1 st heating device 13 will be described later.

The cooling device 14 is configured to cool the yarn Y heated by the 1 st heating device 13. As shown in fig. 2, the cooling device 14 is configured to cool 1 wire Y, for example. Alternatively, the cooling device 14 may be configured to cool a plurality of filaments Y simultaneously. The false twisting device 15 is disposed downstream of the cooling device 14 in the yarn running direction, and is configured to twist the yarn Y. The false twisting device 15 is, for example, a so-called disk friction type false twisting device, but is not limited thereto. The 2 nd feed roller 16 is configured to convey the yarn Y treated by the false twisting device 15 to the interlacing device 17. The speed of the yarn Y fed by the 2 nd feed roller 16 is faster than the speed of the yarn Y fed by the 1 st feed roller 11. Thereby, the yarn Y is draw-false-twisted between the 1 st feed roller 11 and the 2 nd feed roller 16.

The interlacing device 17 is configured to impart interlacing to the yarn Y. The interlacing device 17 has, for example, a known interlacing nozzle for imparting interlacing to the yarn Y by an air flow.

The 3 rd feed roller 18 is configured to feed the yarn Y running downstream of the crosser 17 in the running direction of the yarn to the 2 nd heater 19. As shown in fig. 2, the 3 rd feed roller 18 is configured to feed, for example, 1 yarn Y to the 2 nd heating device 19. Alternatively, the 3 rd feed roller 18 may be configured to be able to feed a plurality of adjacent yarns Y to the downstream side in the yarn running direction. Further, the speed of the yarn Y fed by the 3 rd feed roller 18 is slower than the speed of the yarn Y fed by the 2 nd feed roller 16. Thus, the filament Y relaxes between the 2

nd

16 and 3 rd 18 feed rolls. The 2 nd heating device 19 is configured to heat the yarn Y fed from the 3 rd feed roller 18. The 2 nd heating devices 19 extend in the vertical direction and are provided one at each span. The 4 th feed roller 20 is configured to feed the yarn Y heated by the 2 nd heating device 19 to the winding device 21. As shown in fig. 2, the 4 th feed roller 20 is configured to feed, for example, 1 yarn Y to the winding device 21. Alternatively, the 4 th wire feed roller 20 may be configured to be able to feed each of the plurality of adjacent yarns Y to the downstream side in the yarn running direction. The feeding speed of the 4 th feed roller 20 to the yarn Y is slower than that of the 3 rd feed roller 18. Thus, the filament Y relaxes between the 3 rd and 4 th feed rolls 18 and 20.

In the processing section 3 configured as described above, the yarn Y stretched between the 1 st feed roller 11 and the 2 nd feed roller 16 is twisted by the false twisting device 15. The twist formed by the false twisting device 15 propagates to the yarn stop guide 12, but does not propagate to the upstream side in the yarn advancing direction than the yarn stop guide 12. The drawn and twisted yarn Y is cooled by the cooling device 14 after being heated and thermally fixed by the 1 st heating device 13. The yarn Y is untwisted on the downstream side of the false twisting device 15 in the yarn advancing direction, but the yarn Y is maintained in a state of being false-twisted in a wavy form (that is, the curl of the yarn Y is maintained) by the thermal fixing.

The yarn Y subjected to the false twisting is guided to the downstream side in the running direction of the yarn after being crosslapped or without being doubled by the crosser 17 while being loosened between the 2 nd yarn feeding roller 16 and the 3 rd yarn feeding roller 18. Further, the yarn Y is heat-treated by the 2 nd heating device 19 while being loosened between the 3 rd feed roll 18 and the 4 th feed roll 20. Finally, the yarn Y fed from the 4 th feed roller 20 is wound by the winding device 21.

(constitution of winding part)

The structure of the winding portion 4 will be described with reference to fig. 2. The winding section 4 has a plurality of winding devices 21. Each winding device 21 is configured to be able to wind the yarn Y around one winding bobbin Bw. The winding device 21 includes a fulcrum guide 41, a traverse device 42, and a cradle 43. The fulcrum guide 41 is a guide that serves as a fulcrum when the yarn Y moves in the lateral direction. The traverse device 42 is configured to be able to move the yarn Y laterally by the traverse guide 45. The cradle 43 is configured to rotatably support the winding bobbin Bw. A contact roller 46 is disposed near the cradle 43. The contact roller 46 is in contact with the surface of the winding package Pw to apply a contact pressure. In the winding unit 4 configured as described above, the yarn Y fed from the 4 th feed roller 20 is wound around the winding bobbin Bw by the respective winding devices 21 to form a winding package Pw.

(the 1 st heating device)

Next, a more specific configuration of the 1 st heating device 13 will be described with reference to (a) to (d) of fig. 3. Fig. 3 (a) is a view of the 1 st heating device 13 viewed from the longitudinal direction of the body, and shows the 1 st heating device 13 such that the direction in which the 1 st heating device 13 extends (the 1 st direction described later) is oriented in the left-right direction of the paper surface. FIG. 3 (b) is a sectional view taken along line Ab-Ab of FIG. 3 (a). FIG. 3 (c) is a sectional view taken along the line Ac-Ac in FIG. 3 (b). Fig. 3 (d) is a cross-sectional view of the Ad-Ad line of fig. 3 (b). The direction orthogonal to both the longitudinal direction and the 1 st direction of the machine body is taken as the height direction (see fig. 3 (b)). In fig. 3 (a) to (d), the upper side of the drawing is set as one side in the height direction, and the lower side of the drawing is set as the other side in the height direction.

The 1 st heating device 13 is configured to heat the running yarn Y. In the present embodiment, the 1 st heating device 13 is configured to be capable of heating two yarns Y (yarns Ya, yb). The 1 st heating device 13 extends in a predetermined 1 st direction orthogonal to the longitudinal direction of the body (see fig. 3 (a) and the like). The 1 st heating device 13 includes a heat source 51 and a heating unit 52. The 1 st heating device 13 simultaneously heats the running yarns Ya and Yb by the heating section 52 heated by the heat source 51.

The heat source 51 has a known sheathed heater (electrothermal heater), for example. Sheathed heaters are devices having an electrical heating wire (e.g., a coil) and a tube surrounding the electrical heating wire. The sheathed heater generates joule heat when current flows through the heating wire. The heat source 51 extends in the 1 st direction (see fig. 3 (c)). The heat source 51 has, for example, a substantially circular shape in a cross section orthogonal to the 1 st direction (see fig. 3 (b)), but is not limited thereto. The heat source 51 is electrically connected to a control device 100 (see fig. 3 c) that controls a heating temperature (temperature of the heating unit 52). The control device 100 is configured to be able to set the heating temperature of the 1 st heating device 13. The control device 100 controls the 1 st heating device 13 based on the set value of the heating temperature. The control device 100 may control the 1 st heating device 13, for example, in consideration of the detection results of the temperature sensor (not shown) that detects the set heating temperature and the actual temperature of the heating portion 52.

The heating unit 52 is configured to be heated by heat generated by the heat source 51. The heating unit 52 extends in the 1 st direction along the heat source 51 (see fig. 3 c). The heating unit 52 is provided with a yarn running space S (see fig. 3 (b) and (d)) extending at least in the 1 st direction for running the yarn Y. In the present embodiment, as shown in fig. 3 (b), two yarn running spaces S (yarn running spaces Sa, sb) in which the two yarns Ya, yb run are formed. The yarn Ya running through the yarn running space Sa and the yarn Yb running through the yarn running space Sb are heated by the heating unit 52 heated by the heat source 51. The more detailed configuration of the heating unit 52 will be described later.

Here, in general, in order to reliably suppress temperature fluctuations of the heating unit 52 due to external disturbances (for example, external air is suddenly blown to the heating unit 52, etc.), the heat capacities of the members constituting the heating unit 52 may be set to be very large. However, in this case, the 1 st heating device 13 may be very large in size. Therefore, in consideration of the balance between the suppression of the increase in size of the 1 st heating device 13 and the suppression of the temperature variation due to the external disturbance, the heating portion 52 is generally designed to have a certain degree of heat capacity. However, in such a configuration, if the temperature of the heating unit 52 is once lowered by external disturbance, the temperature of the yarn running space S and/or members forming the yarn running space S (hereinafter, referred to as the yarn running space S and the like) is also lowered. In this case, it may take time to return the temperatures of the heating section 52, the yarn running space S, and the like to the set temperatures. Therefore, in order to suppress a temperature decrease in the yarn running space S and the like due to external disturbance and to quickly raise the temperature of the yarn running space S and the like even if the temperature of the yarn running space S and the like decreases, the first heating device 13 has the following configuration.

(detailed constitution of the heating device 1.)

The detailed structure of the heating device 13 of fig. 1 will be described with reference to fig. 3 (a) to 5. Fig. 4 is an enlarged view of fig. 3 (b). FIG. 5 is a table showing the physical properties of the material constituting the 1 st heating member 53 and the material constituting the 2 nd heating member 54, which will be described later. In fig. 4, the left side of the drawing is one side in the longitudinal direction of the body, and the right side of the drawing is the other side in the longitudinal direction of the body.

As shown in fig. 3 (b) and 4, the heating part 52 includes, for example, two 1 st heating members 53, two 2 nd heating members 54, and two contact blocks 55 (contact members of the present invention). The two 1 st heating members 53 include the 1

st heating members

53a, 53b. The two 2 nd heating members 54 include the 2

nd heating members

54a, 54b. The two contact blocks 55 include

contact blocks

55a, 55b. The 1 st heating member 53a, the 2 nd heating member 54a, and the contact block 55a are members for heating the yarn Ya. The 1 st heating member 53b, the 2 nd heating member 54b, and the contact block 55b are members for heating the wire Yb. The member for heating the yarn Ya and the member for heating the yarn Yb are disposed at positions opposite to each other with the heat source 51 interposed therebetween, for example, in the longitudinal direction of the body.

The means for heating the yarn Ya will be explained. The 1 st heating member 53a is an elongated member extending in the 1 st direction along the heat source 51. The material (1 st material) constituting the 1 st heating member 53 is, for example, a metal material having a large volumetric heat capacity such as brass. The volumetric specific heat is a value obtained by multiplying the specific heat (heat capacity per unit mass) of a certain material by the density (mass per unit volume) of the material. As shown in fig. 4, the 1 st heating member 53a has, for example, a substantially L-shaped cross section perpendicular to the 1 st direction. However, the shape of the 1 st heating member 53a is not limited thereto. The 1 st heating member 53a is disposed on one side in the longitudinal direction of the body of the heat source 51. The 1 st heating member 53a is disposed separately from the heat source 51, for example.

The 2 nd heating member 54a is a long member extending in the 1 st direction along the heat source 51, similarly to the 1 st heating member 53 a. The 2 nd heating member 54 is made of a 2 nd material (details will be described later) having a smaller volumetric specific heat than the 1 st material. As shown in fig. 4, the 2 nd heating member 54a has, for example, a substantially rectangular cross section perpendicular to the 1 st direction. The 2 nd heating member 54a is disposed on one side in the longitudinal direction of the body of the heat source 51. The 2 nd heating member 54a is disposed in contact with the heat source 51. Further, the 2 nd heating member 54a is disposed in contact with the 1 st heating member 53 a. In a cross section orthogonal to the 1 st direction, the 2 nd heating member 54a is disposed so as to surround the heat source 51 together with the 2 nd heating member 54b. The 2 nd heating member 54a is disposed between the heat source 51 and the 1 st heating member 53a in the longitudinal direction of the body, for example. The configuration of the 2 nd heating member 54a will be described in more detail later.

The 2 nd heating member 54a forms, for example, an inverted U-shaped slit 56 (slit 56 a) together with the 1 st heating member 53 a. The other side of the slit 56a in the height direction opens. The contact block 55a is accommodated in the slit 56 a. The slit 56a functions as a storage space for storing the contact block 55a and also functions as a yarn running space Sa for running the yarn Ya. In other words, in the present embodiment, the 2 nd heating member 54a forms the yarn running space Sa together with the 1 st heating member 53 a.

The contact block 55a is an elongated member made of SUS, for example. The contact block 55a extends at least along the 1 st direction. The contact block 55a is machined, for example. The contact block 55a is disposed in the yarn running space S (yarn running space Sa) in which the yarn Ya runs. The contact block 55a has a contact surface 57 (contact surface 57 a) that contacts the yarn Ya and faces at least the other side in the height direction. In other words, the 1 st heating member 53a and the 2 nd heating member 54a are disposed so as not to contact with (i.e., separate from) the running yarn Ya (refer to fig. 4). The contact surface 57a extends at least in the 1 st direction (see fig. 3 (d)). The contact surface 57a is gently curved in a substantially U shape in a cross section orthogonal to the longitudinal direction of the body, for example (see fig. 3 (d)). The contact block 55a is fitted into the slit 56 a. That is, the contact block 55a is in contact with at least one of the 1 st heating member 53a and the 2 nd heating member 54a, for example. The contact block 55a may be in contact with at least the 2 nd heating member 54 a. More strictly speaking, the contact block 55a is shorter than the slit 56a in the machine body length direction by, for example, 0.1mm to 0.5mm. Therefore, a minute gap can be formed between the contact block 55a and the 1 st heating member 53a or the 2 nd heating member 54a in the longitudinal direction of the body. Most preferably, the contact block 55a contacts the 2 nd heating member 54a throughout the entire length in the 1 st direction. The contact block 55a is heated by the heat transferred through the 1 st heating member 53a and the 2 nd heating member 54 a.

Further, a member for heating the wire Yb will be explained. The 1 st heating member 53b is made of the 1 st material, as in the 1 st heating member 53 a. The 1 st heating member 53b is disposed on the other side in the longitudinal direction of the body of the heat source 51. The 1 st heating member 53b is disposed separately from the heat source 51, for example. The 2 nd heating member 54b is made of the 2 nd material, like the 2 nd heating member 54 a. The 2 nd heating member 54b is disposed on the other side in the longitudinal direction of the body of the heat source 51. The 2 nd heating member 54b is disposed in contact with the heat source 51. Further, the 2 nd heating member 54b is disposed in contact with the 1 st heating member 53b. The 2 nd heating member 54b is disposed so as to be sandwiched between the 1 st heating member 53a and the 1 st heating member 53b together with the 2 nd heating member 54a, for example, in the machine body longitudinal direction. The 2 nd heating member 54b forms, for example, a slit 56b similar to the slit 56a together with the 1 st heating member 53b. The contact block 55b is accommodated in the slit 56b. The slit 56b functions as a housing space for the contact block 55b and also functions as a wire running space Sb in which the wire Yb runs. The contact block 55b is a long member made of SUS, for example. The contact block 55b is cut in the same manner as the contact block 55a. The contact piece 55b has a contact surface 57b for contacting the wire Yb, which is the same as the contact surface 57 a. In other words, the 1 st heating member 53b and the 2 nd heating member 54b are configured not to contact with (i.e., to separate from) the running wire Yb (refer to fig. 4). The contact block 55b is fitted into the slit 56b. That is, the contact block 55b is in contact with at least one of the 1 st heating member 53b and the 2 nd heating member 54b.

(details of the heating part 2)

Next, a more detailed configuration of the 2 nd heating member 54 (here, the 2 nd heating member 54a as a representative example) will be described with reference to fig. 3 (b) and 4. The 2 nd heating member 54a is disposed, for example, so as to be sandwiched between the heat source 51 and the yarn running space Sa in a cross section orthogonal to the 1 st direction. The "between the heat source 51 and the yarn running space Sa" is defined as follows, for example. That is, a plurality of virtual line segments (e.g., line segments L1, L2, L3, etc.) can be drawn so that the point Pa on the contact surface 57a that is the most lateral point in the height direction (i.e., the point Pa that is farthest from the entrance of the slit 56a in the height direction in the cross section shown in fig. 4) is connected to the outer surface 51s of the heat source 51 in a predetermined cross section (see, for example, fig. 4) orthogonal to the 1 st direction. When at least one of these line segments passes through the 2 nd heating member 54a, it is defined as "the 2 nd heating member 54a is disposed between the heat source 51 and the filament traveling space Sa". The same definition can be applied to "between the heat source 51 and the wire running space Sb".

The 2 nd heating member 54 may be in contact with the heat source 51, the 1 st heating member 53, and the contact block 55 as in the present embodiment. Further, the ratio of the heat capacity of the 2 nd heating member 54 to the heat capacity of the 1 st heating member 53 may be, for example, 20% or more and 40% or less.

The details of the 2 nd material constituting the 2 nd heating member 54 will be described. As described above, the volumetric specific heat of the 2 nd material is less than the volumetric specific heat of the 1 st material. More specifically, as the 2 nd material, a C/C composite material (carbon fiber-reinforced carbon composite material) is applied. The C/C composite material is a composite material of carbon fiber and graphite. As the carbon fibers, for example, known pitch-based carbon fibers are used. As shown in FIG. 5, in the present embodiment, the volume specific heat of brass used as the 1 st material is, for example, 3.35J/(cm) at 20 ℃ ³ K). In contrast, the C/C composite material used as the 2 nd material has a volume specific heat of, for example, 1.12J/(cm) at 20 ℃ ³ K). Therefore, the temperature of the 2 nd heating member 54 can be raised more rapidly than the temperature of the 1 st heating member 53. That is, when the temperature of the yarn running space S and the like is lowered by the external disturbance, the temperature of the yarn running space S and the like can be rapidly raised via the 2 nd heating member 54. Therefore, even if the temperature of the yarn running space S and the like is lowered, the temperature of the yarn running space S and the like can be rapidly raised.

In addition, in the present embodiment, the C/C composite material used as the 2 nd material has orientation. More specifically, the carbon fibers are oriented in a predetermined X direction. The X direction is, for example, the 1 st direction in the present embodiment. Thus, the thermal conductivity of the 2 nd material has anisotropy. As shown in FIG. 5, the thermal conductivity in the 1 st direction (X direction) of the C/C composite material is, for example, 180W/(mK) at 20 ℃. On the other hand, the thermal conductivity of the C/C composite material in the Y direction (for example, the machine body longitudinal direction, the height direction, etc.) orthogonal to the X direction is, for example, 80W/(m.K) at 20 ℃ and is lower than the thermal conductivity in the X direction. In the present embodiment, the thermal conductivity in at least the 1 st direction of the C/C composite material is higher than that of brass (for example, 60W/(m · K) at 20 ℃). The heating temperature in the 1 st direction can be made uniform by the 2 nd heating member 54 made of the 2 nd material.

Further, in the present embodiment, the thermal conductivity of the C/C composite material (80W/(m · K) described above) is higher than that of brass (60W/(m · K) described above) in any direction orthogonal to the 1 st direction. In other words, the following is assumed. In a cross-sectional view (see fig. 4) orthogonal to the 1 st direction, for example, a direction in which a line segment L3 connecting the point Pa and the outer surface 51s of the heat source 51 at the shortest distance extends is defined as the 2 nd direction. The line segment L3 corresponds to "a predetermined virtual straight line from the heat source to the filament running space" in the present invention. With this configuration, heat can be quickly transferred from the heat source 51 to the yarn running space Sa and the like. Therefore, the temperature of the yarn running space Sa and the like can be rapidly increased. Similarly, the temperature of the wire running space Sb and the like can be rapidly increased.

In addition, the 1 st heating device 13 of the present embodiment is particularly preferably configured to heat the running yarn Y while bringing it into contact with the contact surface 57, for example, in a state where the heating temperature is set to a predetermined temperature of 230 ℃ to 350 ℃. In such a temperature range, the heating efficiency of the yarn Y can be improved as compared with a conventional heating device (not shown). Of course, the heating temperature of the 1 st heating device 13 may be set to a temperature lower than 230 ℃ or may be set to a temperature higher than 350 ℃.

As described above, by using a material having a certain high specific volumetric heat as the 1 st material constituting the 1 st heating member 53, a decrease in the temperature of the heating portion 52 due to external disturbance can be suppressed to some extent. Further, in the present embodiment, the temperature of the 2 nd heating member 54 having a low volumetric specific heat can be raised more rapidly than the temperature of the 1 st heating member 53. This enables the yarn running space S and the like to be rapidly heated via the 2 nd heating member 54 disposed between the heat source 51 and the yarn running space S. Therefore, such rapid heating can suppress a decrease in temperature of the yarn running space S and the like due to external disturbance. Further, even if the temperature of the yarn running space S and the like is lowered by external disturbance, the temperature of the yarn running space S and the like can be rapidly raised.

Further, the 2 nd heating member 54 is in contact with the heat source 51. This enables the heat generated by the heat source 51 to be quickly transferred to the 2 nd heating member 54. Thus, the 2 nd heating member 54 can be efficiently warmed.

Further, the 2 nd heating member 54 forms a thread running space S together with the 1 st heating member 53. Thus, the yarn running space S and the like can be efficiently heated by the 2 nd heating member 54.

Further, the 2 nd heating member 54 is in contact with the 1 st heating member 53. Accordingly, the 1 st heating member 53 can be rapidly heated via the 2 nd heating member 54. In this case, for example, an increase in manufacturing cost can be suppressed compared to a case where a heat source (not shown) for heating the 1 st heating member 53 is provided separately from the heat source 51 and the 2 nd heating member 54 is disposed separately from the 1 st heating member 53.

The ratio of the heat capacity of the 2 nd heating member 54 to the heat capacity of the 1 st heating member 53 is 20% to 40%. Thus, the heat capacity of the 2 nd heating member 54 is not excessively large and is not excessively small with respect to the heat capacity of the 1 st heating member 53. Therefore, the heating section 52 can be reinforced to some extent against external disturbances, and the temperature of the yarn running space S and the like can be rapidly increased.

In addition, the 2 nd material constituting the 2 nd heating member 54 contains a fiber material. This makes it possible to make the thermal conductivity of the 2 nd material anisotropic. Therefore, heat can be transferred very quickly in a direction in which heat transfer is particularly desired.

Further, the fiber material is carbon fiber. Carbon fibers are lightweight materials with high thermal conductivity. Therefore, heat can be transferred very quickly in the direction in which heat is to be transferred. Further, the 1 st heating device 13 can be reduced in weight.

The carbon fiber is a pitch fiber. Pitch-based carbon fibers and PAN-based carbon fibers are generally known as carbon fibers. Generally, pitch-based carbon fibers have higher thermal conductivity than PAN-based carbon fibers. Therefore, by using pitch-based carbon fibers as the carbon fibers, the thermal conductivity of the 2 nd material can be further improved.

Further, by using a composite material of carbon fiber and graphite as the 2 nd material, the thermal conductivity of the 2 nd material can be further improved.

Further, the thermal conductivity of the 2 nd material in the 1 st direction is higher than that of the 1 st material. This enables heat to be quickly transferred in the 1 st direction via the 2 nd heating member 54. Therefore, temperature variations in the yarn running space S and the like in the 1 st direction can be suppressed.

Further, the 2 nd material has a higher thermal conductivity in the 2 nd direction than the 1 st material. This enables heat to be quickly transferred from the heat source 51 to the yarn running space S and the like via the 2 nd heating member 54. Therefore, the temperature of the yarn running space S and the like can be rapidly increased.

Further, the heating part 52 has a contact block 55. In the configuration in which the contact block 55 is provided as in the present embodiment, the temperature of the contact block 55 can be efficiently increased by rapidly increasing the temperature of the 2 nd heating member 54.

Further, the contact block 55 is in contact with the 2 nd heating member 54. Therefore, the temperature of the contact block 55 can be efficiently raised by the heat conduction between the contact block 55 and the 2 nd heating member 54 whose temperature is rapidly raised.

Further, by performing the false twisting in the false twisting machine 1 including the 1 st heating device 13, it is possible to suppress the heating temperature required for processing the yarn Y from being changed by external disturbance. Therefore, the quality of the yarn Y processed by the false twisting machine 1 can be prevented from varying.

Next, a modification of the above embodiment will be described. However, the same reference numerals are given to members having the same configurations as those of the above-described embodiment, and descriptions thereof are omitted as appropriate.

(1) In the above embodiment, the carbon fibers contained in the C/C composite material as the 2 nd material are oriented in the 1 st direction. However, the present invention is not limited thereto. For example, in the 2 nd heating member 54a, the carbon fibers may also be oriented in the 2 nd direction. In addition, in the 2 nd heating member 54b, the carbon fibers may be oriented in a direction from the heat source 51 toward the yarn running space Sb or the like. In this case, heat can be transferred very quickly from the heat source 51 to the yarn running space S and the like.

(2) In the embodiments described above, the carbon fibers contained in the 2 nd material are pitch-based fibers. However, the present invention is not limited thereto. The carbon fiber may be a known PAN-based carbon fiber, for example.

(3) In the embodiments described above, the 2 nd material is a C/C composite material (a composite material of carbon fibers and graphite). However, the present invention is not limited thereto. The 2 nd material may be CFRP (carbon fiber reinforced plastic), which is a composite material of carbon fibers and a resin (e.g., an epoxy resin), for example. Since CFRP is cheaper than C/C composite material, the use of CFRP as the 2 nd material can suppress an increase in the manufacturing cost of the 1 st heating device 13.

(4) In the embodiments described above, the 2 nd material contains carbon fibers as the fiber material. However, the present invention is not limited thereto. Materials other than carbon fiber may be used as the fiber material.

(5) In the embodiments described above, the carbon fibers contained in the C/C composite material are oriented in the predetermined X direction. However, the present invention is not limited thereto. The carbon fibers may not be oriented in a specific direction (i.e., may be randomly oriented).

(6) In the embodiments described above, the thermal conductivity of the 2 nd material is higher than that of the 1 st material in both the 1 st direction and the 2 nd direction. However, the present invention is not limited thereto. The thermal conductivity of the 2 nd material may be higher than that of the 1 st material only in one of the 1 st direction and the 2 nd direction, for example. Alternatively, the thermal conductivity of the 2 nd material may be equal to or lower than the thermal conductivity of the 1 st material. The 2 nd material may have only a characteristic of having a smaller volumetric specific heat than the 1 st material. For example, the 1 st heating member 53 may be made of aluminum. As shown in FIG. 6 (a), the volume specific heat of aluminum (1 st material) was 2.43J/(cm) at 20 ℃ ³ K). In this case, the C/C composite materialThe volumetric specific heat of the (2 nd material) is less than the volumetric specific heat of aluminum. On the other hand, the thermal conductivity of aluminum (material No. 1) was 204W/(m · K) at 20 ℃, and was higher than that of the C/C composite material (material No. 2) in either direction.

(7) The combination of the 1 st material and the 2 nd material is not limited to the above. For example, as shown in fig. 6 (b), the 1 st material may be brass and the 2 nd material may be aluminum. In this case, the volume specific heat of the 2 nd material is lower than the volume specific heat of the 1 st material, and the thermal conductivity of the 2 nd material is higher than the thermal conductivity of the 1 st material. In addition, aluminum has excellent heat resistance compared to a C/C composite material. When a material having such excellent heat resistance is applied to the heating portion 52, the heating temperature can be set high. In this case, the 1 st heating device 13 may be a non-contact type heating device (not shown) described in, for example, japanese patent application laid-open No. 2002-146640. In the noncontact heating device, a plurality of wire guides (not shown) arranged apart from each other in the 1 st direction are provided instead of the contact block 55. Each of the yarn guides is not a member for directly heating the yarn Y, but a member for guiding the yarn Y only. In the non-contact heating device, the yarn Y is heated mainly by the heated air in the yarn running space S.

(8) In the embodiments described above, the 1 st heating device 13 is configured to heat two yarns Y. However, the present invention is not limited thereto. A 1 st heating device (not shown) configured to be capable of heating 3 or more yarns Y may be provided. Alternatively, for example, as shown in fig. 7, a 1 st heating device 13A configured to heat 1 yarn Y may be provided. The heating unit 52A of the 1 st heating device 13A may be configured to remove, for example, only the 1 st heating member 53b and the contact block 55b, as compared with the heating unit 52 (see fig. 4 and the like). Alternatively, the 1 st heating device 13A may be provided with the 1 st heating member 61 made of the 1 st material instead of the 2 nd heating member 54b.

(9) In the embodiments described above, the 2 nd heating member 54 is in contact with the heat source 51 and the contact block 55. However, the present invention is not limited thereto. The 2 nd heating member 54 may be in contact with only one of the heat source 51 and the contact block 55, or may not be in contact with either of the heat source 51 and the contact block 55. In this case, only the 1 st heating member 53 may be provided so as to be in contact with the heat source 51 and/or the contact block 55. In the embodiments described above, the 2 nd heating member 54 is in contact with the 1 st heating member 53, but the present invention is not limited to this. For example, the 1 st heating member 53 may be heated by a heat source (not shown) that is provided separately from the heat source 51, and the 2 nd heating member 54 may be disposed separately from the 1 st heating member 53.

For example, only a part of the contact block 55 in the 1 st direction may be in contact with the 2 nd heating member 54. However, in this case, the contact block 55 is less efficient in heating than the configuration in which the contact block 55 is in contact with the 2 nd heating member 54 over the entire length in the 1 st direction.

Alternatively, neither the 1 st heating member 53 nor the 2 nd heating member 54 may be in contact with the contact block 55. However, in this case, the contact block 55 is heated with low efficiency. In addition, contact block 55 has high heating efficiency in the following procedure. As the 1 st configuration, the heating efficiency is highest in a configuration in which at least the 2 nd heating member 54 is in contact with the contact block 55. As the 2 nd configuration, the heating efficiency is the second highest in the configuration in which only the 1 st heating member 53 is in contact with the contact block 55. As the 3 rd configuration, in the configuration in which neither the 1 st heating member 53 nor the 2 nd heating member 54 is in contact with the contact block 55, the heating efficiency is the lowest. When two or more configurations of the 1 st to 3 rd configurations are inadvertently mixed in the plurality of heating units 52, there is a possibility that the heating efficiency of the contact block 55 may vary among the plurality of heating units 52. Therefore, it is preferable that the plurality of heating units 52 and the plurality of 1 st heating devices 13 are configured to be as uniform as possible among the 1 st to 3 rd heating devices.

(10) In the embodiments described above, the ratio of the heat capacity of the 2 nd heating member 54 to the heat capacity of the 1 st heating member 53 is 20% to 40%. However, the present invention is not limited thereto. This ratio may be, for example, less than 20%, or may be greater than 40%.

(11) In the embodiments described above, the contact surface 57 is curved in a cross section orthogonal to the longitudinal direction of the body. However, the present invention is not limited thereto. The contact surface 57 may be, for example, substantially linear in a cross section orthogonal to the longitudinal direction of the body.

(12) In the embodiments described above, the 1 st heating device 13 and the 1 st heating device 13A have the contact block 55. However, the present invention is not limited thereto. Instead of the contact block 55, an unillustrated SUS plate may be provided as a contact member, the SUS plate being formed into an inverted U-shape in a cross section orthogonal to the 1 st direction (see, for example, japanese patent application laid-open No. 2002-194631).

(13) The contact member (the contact block 55 or the SUS plate) may be detachably attached to the heating unit 52. This allows the contact member to be temporarily removed from the heating unit 52, which can greatly improve the efficiency of maintenance such as cleaning of the contact member.

(14) In the embodiments described above, the slit 56 is formed by both the 1 st heating member 53 and the 2 nd heating member 54. However, the present invention is not limited thereto. The slit 56 may be formed by only one of the 1 st heating member 53 and the 2 nd heating member 54. That is, the 1 st heating member 53 may be formed as the slit 56 as a whole. Alternatively, the 2 nd heating member 54 may be formed integrally with the slit 56.

(15) In the embodiments described above, the heat source 51 has a sheathed heater. However, the present invention is not limited thereto. Instead of the heat source 51, for example, a heat source (not shown) configured to heat the heating unit 52 with a heat medium may be provided.

(16) The above-described configuration of the 1 st heating device 13 can also be applied to the 2 nd heating device 19. The 1 st heating device 13 is not limited to the false twisting machine 1, and may be applied to a known false twisting machine (not shown) having another configuration. For example, the present invention can be applied to a false twist processing machine (not shown) described in japanese patent application laid-open No. 2009-74219. The false twist processing machine is configured to be capable of doubling 2 yarns to form 1 yarn. The false twisting machine is configured to wind 1 yarn of doubled yarn or 2 yarns of un-doubled yarn on a single cradle. As an example, the present invention can be applied to such a false twist processing machine. Alternatively, the 1 st heating device 13 may be applied to a false twist processing machine, and may be applied to a yarn processing machine that performs processing while running a yarn (not shown), such as a known pneumatic processing machine (not shown).

Claims

1. A heating device is provided with:

a heat source; and

a heating unit configured to be heated by the heat source and configured to form a yarn running space extending at least in a predetermined 1 st direction,

the heating device heats the yarn running in the yarn running space, and is characterized in that,

the heating section includes:

a 1 st heating member configured not to contact the yarn running in the yarn running space and made of a 1 st material; and

and a 2 nd heating member which is disposed at least between the heat source and the yarn running space in a cross section orthogonal to the 1 st direction, is disposed so as not to contact the yarn running in the yarn running space, and is composed of a 2 nd material having a lower volume specific heat than the 1 st material.

2. The heating device according to claim 1,

the 2 nd heating member is in contact with the heat source.

3. The heating device according to claim 1 or 2,

the 2 nd heating member is in contact with the 1 st heating member.

4. The heating device according to any one of claims 1 to 3,

the ratio of the heat capacity of the 2 nd heating member to the heat capacity of the 1 st heating member is 20% to 40%.

5. The heating device according to any one of claims 1 to 4,

the 2 nd material contains a fibrous material.

6. The heating device according to claim 5,

the fiber material is carbon fiber.

7. The heating device according to claim 6,

the carbon fiber is a pitch fiber.

8. The heating device according to claim 6 or 7,

the 2 nd material is a composite material of the carbon fiber and graphite.

9. The heating device according to claim 6 or 7,

the 2 nd material is a composite material of the carbon fiber and a resin.

10. The heating device according to any one of claims 1 to 9,

the 2 nd heating member is disposed to extend at least along the 1 st direction,

the 2 nd material has a higher thermal conductivity in at least the 1 st direction than the 1 st material.

11. The heating device according to any one of claims 1 to 10,

in a cross section orthogonal to the 1 st direction, assuming that a direction in which a predetermined virtual straight line extending from the heat source to the filament running space extends is the 2 nd direction,

the 2 nd material has a higher thermal conductivity in at least the 2 nd direction than the 1 st material.

12. The heating device according to any one of claims 1 to 11,

the heating unit includes a contact member extending at least in the 1 st direction and configured to contact the wire.

13. The heating device according to claim 12,

the contact member is in contact with the 2 nd heating member.

14. The heating device according to claim 12 or 13,

the contact member is configured to be attachable to and detachable from the heating unit.

15. A yarn processing machine is characterized by comprising:

the heating device of any one of claims 1 to 14;

a yarn deformation imparting device for imparting deformation to the yarn; and

a yarn feeding device configured to feed the yarn to the heating device and the yarn deformation imparting device to advance the yarn,

the yarn processing machine is configured to process the yarn while advancing the yarn.