TW202426721A - Yarn heater and false-twist texturing machine - Google Patents

Abstract

An object of the present invention is to reduce power consumption without increasing the size of a device. A first heater 13 is provided with a yarn running groove 56 extending in an extending direction, and includes a heating unit 50 configured to heat a yarn Y running in the yarn running groove 56, a box 60 housing the heating unit 50, plural plate members 71, 72, 73, and 74, first sealing members 82, and a second sealing member 83. The plate members 71, 72, 73, and 74 and a main body portion 61 of the box 60 oppose each other at intervals and are aligned in a direction away from the heating unit 50 on a virtual plane which is orthogonal to the extending direction and which intersects with the heating unit 50. The first sealing members 82 and the second sealing member 83 seal between-plate spaces 75 at their end portions. Each between-plate space 75 is provided between two opposing plate members or between the plate member 74 and the main body portion 61. In this regard, air layers provided at the between-plate spaces 75 are aligned in the direction away from the heating unit 50 on the virtual plane which is orthogonal to the extending direction and which intersects with the heating unit 50.

Description

Wire heating device and false twisting machine

The present invention relates to a yarn heating device for heating a yarn and a false twisting machine provided with the yarn heating device.

Conventionally, a yarn heating device for heating the traveling yarn in a processing machine that performs various processes such as doubling processing and false twisting processing on yarns made of synthetic fibers has been known. The false twisting machine disclosed in Patent Document 1 is provided with a primary heating unit (yarn heating device) including a box (heat preservation box), a heating device (heating section) housed in a storage space of the box, and A heat insulating material arranged to fill a gap in a storage space in which a heating device is stored. In the heating device, a thread running groove is formed, and the thread running in the thread running groove is heated. [Prior art documents] [Patent documents]

[Patent Document 1] Japanese Patent Application Publication No. 2016-056494

[The problem that the invention wants to solve]

In the above-mentioned wire heating device, it is desired to reduce power consumption. Here, as a method of reducing power consumption, it is considered to increase the thickness of the heat insulating material to reduce the amount of heat released from the heating part to the outside. However, due to the increase in the thickness of the heat insulating material, the problem of increasing the size of the wire heating device will arise.

An object of the present invention is to provide a yarn heating device capable of reducing power consumption without increasing the size of the device, and a false twisting machine provided with the yarn heating device. [Means used to solve problems]

According to the first invention, the wire heating device forms a wire running path for the wire to run, and comprises: a heating portion extending along the direction in which the wire running path extends, i.e., a specified direction, for heating the wire running in the wire running path; a plurality of plate components arranged opposite to each other and separately, and arranged in a direction away from the heating portion in an imaginary plane that is orthogonal to the specified direction and intersects the heating portion; and a sealing portion that seals at least a portion of the end portion of the inter-plate space between the two opposing plate components; in the imaginary plane, a plurality of air layers formed in the inter-plate space are arranged in a direction away from the heating portion.

Here, "the end portion of the inter-plate space between the two opposing plate members" refers to the boundary portion of the inter-plate space, which is a portion of the inter-plate space that is not defined by the two opposing plate members.

In the present invention, by utilizing a plurality of air layers arranged in a direction away from the heating part in an imaginary plane, it is possible to suppress the release of heat from the heating part to the outside. In addition, since the thermal conductivity of the air layer is relatively small, even if the thickness is small, sufficient heat insulation performance is exerted. Furthermore, since at least a portion of the end of the space between the plates is sealed by a sealing member, it is possible to suppress the flow of air inside and outside the space between the plates. Thus, convection in the air layer can be suppressed. Therefore, it is difficult to cause heat transfer between the two plate members constituting the space between the plates, and the heat insulation performance of the air layer can be further improved. Therefore, power consumption can be reduced without increasing the size of the device.

According to the wire heating device of the second invention, in the first invention, the space between the plates is sealed.

In the present invention, since the space between the panels is sealed, the inflow and outflow of air inside and outside the space between the panels can be reliably suppressed. Therefore, the heat insulation performance of the air layer can be further improved.

According to the third invention, the wire heating device is characterized in that, in the first or second invention, the plate members extend along the predetermined direction. The sealing member is made of a heat insulating material and includes a first sealing member for sealing both ends of the space between the plates in the predetermined direction.

In the present invention, the first sealing member seals both ends of the space between the plates in a predetermined direction, thereby preventing air from entering and exiting the two ends. Furthermore, since the first sealing member that seals both ends of the space between the plates in a predetermined direction is made of a heat insulating material, heat can be prevented from being transferred between adjacent plate members via the first sealing member. Thus, the heat insulation performance caused by the air layer can be further improved.

According to the fourth invention, the yarn heating device is characterized in that, in the first invention, the density of the first sealing component is greater than 80 kg/m ³ .

In the present invention, by making the first sealing member high-density, it is possible to more reliably suppress the air from entering and exiting the inner side and the outer side of the inter-plate space through the first sealing member. Therefore, the inter-plate space can be more reliably sealed.

The wire heating device according to the fifth invention is, in any one of the first to fourth inventions, further comprising a gasket component which is arranged in the spaces between the aforementioned plates.

When the thickness of the space between the boards is uneven, convection is likely to occur in the air layer formed in the space between the boards due to the temperature difference generated in the space between the boards. In the present invention, by arranging a gasket member in the space between the boards, the thickness of the space between the boards can be made uniform. Therefore, the convection in the air layer can be suppressed, and thus the heat insulation performance based on the air layer can be further improved.

According to the sixth invention, the wire heating device is configured such that, in the fifth invention, the aforementioned gasket components respectively arranged in the spaces between the two adjacent aforementioned plates are arranged at different positions in the aforementioned prescribed direction.

When the gasket members respectively arranged in the spaces between two adjacent plates are arranged at the same position in a predetermined direction, heat easily moves between the plate members through the two gasket members. In the present invention, heat is difficult to move between the plate members through the two gasket members, and the heat insulation performance caused by the air layer can be further improved.

According to the seventh invention, the wire heating device is that in the fifth or sixth invention, the end of one side of the orthogonal direction that is orthogonal to the aforementioned specified direction of at least one aforementioned inter-plate space is sealed by a bent portion formed by bending the end of the aforementioned one side of the orthogonal direction of the two aforementioned plate components constituting the inter-plate space, and in two adjacent aforementioned inter-plate spaces, the aforementioned bent portion that seals the aforementioned inter-plate space of one and the aforementioned gasket component arranged in the aforementioned inter-plate space of the other are arranged at different positions in the aforementioned orthogonal direction.

In the present invention, the inter-plate space is sealed by the bent portion which is a part of the plate member, so that the inter-plate space can be sealed. Furthermore, heat is difficult to move between the plate members through the bent portion and the gasket member, and the heat insulation performance by the air layer can be further improved.

According to the wire heating device of the eighth invention, in the seventh invention, the bent portion functions as a gasket for ensuring the interval between the two plate components.

In the present invention, the thickness of the space between the plates can be made uniform by the bent portion.

According to the ninth invention, the wire heating device is that in the seventh or eighth invention, when three adjacent plate members among the plurality of plate members are set as the first plate member, the second plate member and the third plate member, the end of the first plate member and the second plate member on the one side of the orthogonal direction of the inter-plate space is sealed by the bent portion formed by bending the end of the first plate member and the second plate member on the one side of the orthogonal direction. The sealing member includes a second sealing member, which is made of a heat insulating material and seals the end of the second plate member and the third plate member on the one side of the orthogonal direction of the inter-plate space.

When a plurality of adjacent inter-plate spaces (i.e., the inter-plate space between the first plate member and the second plate member and the inter-plate space between the second plate member and the third plate member) are all sealed by the bent portions, heat is sequentially transferred between the plurality of plate members via the bent portions that seal the inter-plate spaces. In the present invention, the inter-plate space between the second plate member and the third plate member is sealed by a second sealing member formed of a heat insulating material. Therefore, it is possible to suppress the heat transferred between the first plate member and the second plate member via the bent portions of the plate members from being transferred to the third plate member. As a result, the airtightness of the inter-plate spaces can be maintained, and the heat insulation performance caused by the air layer can be further improved.

According to the tenth invention, the wire heating device is that in the ninth invention, when two of the three adjacent inter-plate spaces, namely the inter-plate space located closest to the heating part and the inter-plate space located farthest from the heating part, are sealed by the bent portions, the bent portions that respectively seal the two inter-plate spaces are located at different positions in the orthogonal direction.

When the positions of the bent parts that seal the spaces between the two plates are the same in the orthogonal direction, heat may move between the different plate parts through the two bent parts. In the present invention, heat is difficult to move between the different plate parts through the two bent parts, and the heat insulation performance caused by the air layer can be further improved.

According to the eleventh invention, the wire heating device is, in the ninth or tenth invention, further provided with a covering member, which is made of a heat insulating material and covers the surface of the aforementioned inter-plate space sealed by the aforementioned bent portion, which is opposite to the side of the aforementioned inter-plate space in the aforementioned bent portion that seals at least the aforementioned inter-plate space closest to the aforementioned heating portion.

In the present invention, the heat release from the bent portion can be suppressed by the covering member. In particular, the heat release from the bent portion of the plate member located near the heating portion and reaching a high temperature can be reliably suppressed.

According to the twelfth invention, the wire heating device is characterized in that, in the eleventh invention, the second sealing component also serves as the covering component.

In the present invention, the structure of the wire heating device can be simplified compared to the case where the covering member and the second sealing member are different members.

According to the wire heating device of the thirteenth invention, in the twelfth invention, the second sealing component seals the end of the one side of the orthogonal direction of all the inter-plate spaces in the inter-plate spaces that are not sealed by the bending portion, and covers the surface of the bending portion in the inter-plate spaces of all the inter-plate spaces in the inter-plate spaces that are sealed by the bending portion that is opposite to the side of the inter-plate spaces.

In the present invention, a second sealing member can be used to maintain the airtightness of all inter-panel spaces, and the heat insulation performance caused by the air layer can be further improved.

According to the wire heating device of the fourteenth invention, in the twelfth or thirteenth invention, the aforementioned plate components cover the entire aforementioned heating portion in the aforementioned orthogonal direction, and the aforementioned bent portion, i.e., the first bent portion, which is located in the aforementioned inter-plate space sealed by the aforementioned bent portion and is located closest to the aforementioned heating portion, is compared with the aforementioned bent portion, i.e., the second bent portion, which seals the other aforementioned inter-plate spaces, and the thickness of the portion of the aforementioned second sealing component covering the aforementioned first bent portion in the aforementioned orthogonal direction, which is located closer to the aforementioned heating portion, is greater than the thickness of the portion covering the aforementioned second bent portion in the aforementioned orthogonal direction.

In the present invention, it is possible to reliably suppress the release of heat from the first bent portion that is located near the heating portion in the orthogonal direction and has reached a high temperature.

The wire heating device of the fifteenth invention is that in any one of the ninth to fourteenth inventions, there is also a connecting component, which connects the aforementioned plate components to each other, the aforementioned first plate component and the aforementioned second plate component are fixed to each other at the aforementioned bending portion, and the aforementioned second plate component and the aforementioned third plate component are fixed to each other at the end portion of the other side opposite to the aforementioned one side in the aforementioned orthogonal direction by the aforementioned connecting component.

In the present invention, by fixing the bent portion of the first plate member and the second plate member, the layer thickness between the first plate member and the second plate member can be maintained. By fixing the connecting member of the second plate member and the third plate member, the layer thickness between the second plate member and the third plate member can be maintained. Here, when the fixed portion of the first plate member and the second plate member, and the fixed portion of the second plate member and the third plate member are arranged close to each other, heat can easily move between the first plate member and the third plate member through these two fixed portions. In the present invention, the fixed portion of the first plate member and the second plate member (the portion where the bent portion is formed) and the fixed portion of the second plate member and the third plate member (the portion connected through the connecting member) can be separated in an orthogonal direction. Therefore, it is difficult for heat to move between the first plate member and the third plate member through the two fixed portions, and the thermal insulation performance caused by the air layer can be further improved.

According to the sixteenth invention, the wire heating device is that in any one of the first to eighth inventions, the aforementioned sealing component includes a second sealing component, which is made of an insulating material and seals the end of one side of the aforementioned inter-plate space in a direction orthogonal to the aforementioned specified direction.

In the present invention, the second sealing member seals the end of one side of the space between the plates in the orthogonal direction, thereby preventing air from entering and exiting from the end. In addition, the second sealing member is made of a heat insulating material, thereby preventing heat from being transferred between adjacent plate members through the second sealing member. Thus, the heat insulation performance caused by the air layer can be further improved.

According to the seventeenth invention, the wire heating device is characterized in that, in any one of the ninth to sixteenth inventions, the density of the second sealing component is greater than 80 kg/m ³ .

In the present invention, by making the second sealing member high-density, it is possible to more reliably suppress the air from entering and exiting the inner side and the outer side of the inter-plate space through the second sealing member. Therefore, the inter-plate space can be more reliably sealed.

According to the eighteenth invention, the wire heating device is characterized in that, in any one of the first to seventeenth inventions, the thickness of the air layer is greater than 5 mm and less than 15 mm.

If the thickness of the air layer is large, convection is likely to occur. If convection occurs in the air layer, heat will easily move between the two plate components that constitute the inter-plate space in which the air layer is formed. On the other hand, if the thickness of the air layer is small, adjacent plate components may come into contact with each other. In this case, heat moves between adjacent plate components through the contact portions. According to the present invention, the thickness of the air layer can be formed to a size that can suppress convection in the air layer and to a size that makes it difficult for plate components to come into contact with each other. As a result, the heat insulation performance caused by the air layer can be further improved.

The wire heating device according to the nineteenth invention is, in any one of the first to eighteenth inventions, further comprising a heat insulating component, which is arranged among the plurality of plate components so as to be located between the plate component closest to the heating part and the heating part.

Bolts and the like used to fix the components constituting the heating unit are exposed on the surface of the heating unit, and there are unevenness on the surface. Therefore, it is difficult to form an air layer with uniform thickness and high heat insulation performance between the surface of the heating unit and the plate member. In the present invention, by arranging a heat insulating member between the heating unit and the plate member, it is possible to further suppress the heat from the heating unit to the outside.

According to the twentieth invention, the wire heating device is, in any one of the first to nineteenth inventions, the wire running passage is a wire running groove, at least a portion of which is defined by the heating portion and is open in an opening direction orthogonal to the prescribed direction.

In the present invention, the wire can be heated efficiently.

According to the wire heating device of the twenty-first invention, in the twentieth invention, the plurality of plate components are not arranged in the area of the wire running groove opposite to the open end in the open direction.

In the present invention, the area facing the open end of the wire running groove, which is the area through which the wire passes when the wire is inserted into the wire running groove, can be left empty.

According to the wire heating device of the twenty-second invention, in the twenty-first invention, the aforementioned plate components are groove-shaped extending along the aforementioned specified direction and open in the aforementioned opening direction, and the aforementioned multiple plate components are arranged in a nested state, and the aforementioned plate component arranged at the innermost side is arranged to surround the aforementioned heating part.

In the present invention, the area through which the wire passes when the wire is inserted into the wire running groove can be vacated, and the heating part can be surrounded by an air layer formed in the inter-plate space between two adjacent plate members. Therefore, the heat release from the heating part to the outside can be effectively suppressed.

According to the wire heating device of the twenty-third invention, in any one of the first to twenty-second inventions, among the opposing surfaces of the two aforementioned plate members constituting the aforementioned plurality of inter-plate spaces located closest to the aforementioned heating part, at least the surface of the aforementioned plate member close to the aforementioned heating part is mirror polished.

In the present invention, the radiant heat from the heating part can be suppressed by using the mirror-polished surface of the plate member. Therefore, heat transfer caused by radiation can be suppressed, and power consumption can be further reduced. In addition, if the surfaces of multiple plate members are mirror-polished, the cost increases. In the present invention, by mirror-polishing the surface of the plate space positioned closest to the heating part, the radiant heat from the heating part can be most effectively suppressed, and the increase in cost can be suppressed. Furthermore, dirt on the mirror-polished surface tends to become noticeable. However, in the present invention, since the surface of the plate space that is not visible from the outside is mirror-polished, the dirt attached to the mirror surface is difficult to notice.

The false twisting machine according to the twenty-fourth invention is a false twisting machine that performs false twisting on a yarn, and is provided with the yarn heating device according to any one of the first to twenty-third inventions.

In the present invention, power consumption can be reduced without increasing the size of the wire heating device.

A false twisting machine 1 according to a preferred embodiment of the present invention will be described with reference to FIG. 1 . In addition, let the vertical direction on the paper surface of FIG. 1 be the body length direction, and let the left-right direction on the paper surface be the body width direction. Let the direction orthogonal to both the longitudinal direction of the body and the width direction of the body be the up-down direction of the action of gravity. The body length direction and the body width direction are substantially parallel to the horizontal direction.

(Overall structure of false twisting machine 1) The false twisting machine 1 is configured to perform false twisting on a yarn Y made of synthetic fibers such as nylon (polyamide fiber) or polyester, for example. The false twisting machine 1 includes a yarn supply part 2 for supplying a yarn Y, a processing part 3 for performing false twisting on the yarn Y supplied from the yarn supply part 2, and winding the yarn Y processed by the processing part 3 into a roll. Take the winding part 4 of the bobbin Bw. A plurality of components of 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 body length direction is a direction orthogonal to the travel plane (paper surface of Figure 1) of the yarn Y formed by the yarn channel from the yarn supply section 2 through the processing section 3 to the winding section 4.

The yarn supply unit 2 has a creel stand 5 that holds a plurality of yarn supply packages Ps. The yarn supply part 2 supplies a plurality of yarns Y to the processing part 3 . The processing unit 3 performs false twisting on the yarn Y supplied from the yarn supply package Ps. The processing section 3 is configured to include a first yarn supply roller 11, a twist-stopping yarn guide 12, a first heating device 13 (equivalent to the "yarn heating device" of the present invention), a cooling device, and a cooling device, which are arranged in this order from the upstream side in the yarn traveling direction. Device 14, false twisting device 15, second wire supply roller 16, interlacing device 17, third wire supply roller 18, second heating device 19 and fourth wire supply roller 20. The winding part 4 has a plurality of winding devices 21 . Each winding device 21 winds the yarn Y that has been falsely twisted by the processing unit 3 onto the winding bobbin Bw to form a winding package Pw.

The false twisting 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 extend in the longitudinal direction of the body to approximately the same length. The main body 8 and the winding table 9 are arranged to face each other in the width direction of the body. The upper part of the main body 8 and the upper part of the winding table 9 are connected through a support frame 10 . Each device constituting the processing unit 3 is mainly installed on the main body 8 or the support frame 10 . Each device constituting the winding unit 4 is installed on the winding table 9 . The main body 8, the winding table 9 and the support frame 10 form a working space A for the operator to perform operations such as hanging threads on each device. The thread passage is formed so that the thread Y mainly travels around the work space A.

The false twisting machine 1 has a unit unit called a span including a pair of main bodies 8 and a winding table 9 arranged to face each other. In one span, a plurality of processing units (also referred to as spindles) forming a wire passage through each device constituting the processing section 3 are arranged in the longitudinal direction of the body. Accordingly, in one span, false twist processing can be performed simultaneously on a plurality of yarns Y running in a state aligned along the longitudinal direction of the machine body. In the false twisting machine 1, the spans are arranged left and right symmetrically on the paper with the center line C in the body width direction of the main body 8 as the axis of symmetry. The main body 8 is a common part in the left and right spans.

(Structure of the Processing Section) The structure of the processing section 3 will be described with reference to FIGS. 1 and 2 . The first yarn supply roller 11 is configured to unwind the yarn Y from the yarn supply package Ps attached to the yarn supply section 2 and transport it to the first heating device 13 . For example, as shown in FIG. 2 , the first yarn supply roller 11 is configured to convey one yarn Y to the first heating device 13 . The first yarn supply roller 11 may be configured to convey a plurality of adjacent yarns Y to the downstream side in the yarn traveling direction. The twist-stopping 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 guide 12 in the yarn traveling direction.

The first heating device 13 is a device for heating the yarn Y fed from the first yarn supply roller 11 to a predetermined processing temperature. For example, as shown in FIG2 , the first heating device 13 is configured to heat two yarns Y. The first heating device 13 will be described in more detail later.

The cooling device 14 is configured to cool the yarn Y heated by the first heating device 13. For example, as shown in FIG2 , the cooling device 14 is configured to cool one yarn Y. The cooling device 14 may also be configured to cool a plurality of yarns Y simultaneously.

The false twisting device 15 is disposed downstream of the cooling device 14 in the yarn traveling direction. The false twisting device 15 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 it is not limited thereto.

The second yarn supply roller 16 is configured to convey the yarn Y processed by the false twisting device 15 to the interlacing device 17 . The conveying speed of the yarn Y by the second yarn supply roller 16 is faster than the conveying speed of the yarn Y by the first yarn supply roller 11 . Thereby, the yarn Y is stretched and falsely twisted between the first yarn supply roller 11 and the second yarn supply roller 16 .

The interlacing device 17 is configured to interlace the yarns Y. The interlacing device 17 has, for example, a well-known interlacing nozzle for interlacing the yarns Y by air flow.

The third yarn supply roller 18 is configured to convey the yarn Y running on the downstream side of the yarn running direction of the interlacing device 17 to the second heating device 19. For example, as shown in FIG2 , the third yarn supply roller 18 is configured to convey one yarn Y to the second heating device 19. Alternatively, the third yarn supply roller 18 may be configured to convey a plurality of adjacent yarns Y to the downstream side of the yarn running direction, respectively. In addition, the conveying speed of the yarn Y by the third yarn supply roller 18 is slower than the conveying speed of the yarn Y by the second yarn supply roller 16. Therefore, the yarn Y is relaxed between the second yarn supply roller 16 and the third yarn supply roller 18.

The second heating device 19 is configured to heat the wire Y fed from the third wire supply roller 18. The second heating device 19 extends along the lead vertical direction, and one second heating device 19 is provided in each span.

The fourth yarn supply roller 20 is configured to convey the yarn Y heated by the second heating device 19 to the winding device 21. For example, as shown in FIG. 2 , the fourth yarn supply roller 20 is configured to convey one yarn Y to the winding device 21. The fourth yarn supply roller 20 may also be configured to convey a plurality of adjacent yarns Y to the downstream side of the yarn travel direction. The conveying speed of the yarn Y by the fourth yarn supply roller 20 is slower than the conveying speed of the yarn Y by the third yarn supply roller 18. Therefore, the yarn Y is slack between the third yarn supply roller 18 and the fourth yarn supply roller 20.

In the processing section 3 configured as above, the yarn Y drawn between the first yarn supply roller 11 and the second yarn supply roller 16 is twisted by the false twisting device 15 . The twist formed by the false twist device 15 is propagated to the twist-stopping yarn guide 12 but does not propagate to the upstream side of the twist-stopping yarn guide 12 in the yarn traveling direction. The stretched and twisted yarn Y is heated and heat-set by the first heating device 13 and then cooled by the cooling device 14 . The yarn Y is untwisted on the downstream side in the yarn traveling direction of the false twisting device 15, but the yarn Y is maintained in a wavy state (that is, the crimp of the yarn Y is maintained) by the heat setting.

The false-twisted yarn Y is entangled by the interlacing device 17 while relaxing between the second yarn supply roller 16 and the third yarn supply roller 18 , and is then guided downstream in the yarn traveling direction. Furthermore, the yarn Y is heat-treated by the second heating device 19 while relaxing between the third yarn supply roller 18 and the fourth yarn supply roller 20 . Finally, the yarn Y conveyed from the fourth yarn supply roller 20 is wound up by the winding device 21 .

(Structure of the winding section) The structure of the winding section 4 is explained 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 on a winding tube Bw. The winding device 21 has a fulcrum wire guide 31, a traverse device 32, and a cradle 33. The fulcrum wire guide 31 is a wire guide that serves as a fulcrum when the yarn Y is traversed. The traverse device 32 is configured to be able to traverse the yarn Y through the traverse wire guide 34. The cradle 33 is configured to support the winding tube Bw so that it can rotate freely. A contact roller 35 is arranged near the cradle 33. The contact roller 35 contacts the surface of the winding package Pw and applies contact pressure. In the winding section 4 constructed as above, the yarn Y delivered from the fourth yarn supply roller 20 is wound on the winding bobbin Bw by each winding device 21, thereby forming the winding package Pw.

(First heating device) Next, the more specific structure of the first heating device 13 is described with reference to FIGS. 3 to 8. In addition, in FIG. 7, the illustration of the second sealing member 83 is omitted for the purpose of explanation. FIG. 8 is a diagram for explaining the thicknesses Ta1, Tb1, Ta2, and Tb2 described later, and symbols that are not necessary for the explanation are appropriately omitted.

As shown in FIG3 , the first heating device 13 extends along a predetermined extension direction (equivalent to the “prescribed direction” of the present invention) that is orthogonal to the length direction of the machine body. In this embodiment, the extension direction is parallel to the width direction of the machine body. The extension direction can also be inclined relative to the width direction of the machine body.

As described in detail later, a wire running groove 56 extending along the extension direction is formed in the first heating device 13 (refer to FIG. 5 ). The wire running groove 56 is equivalent to the "wire running passage" of the present invention. The first heating device 13 is configured to heat the wire Y running from one side to the other side of the extension direction in the wire running groove 56. In this embodiment, the first heating device 13 is configured to heat two wires Y (wires Ya, Yb: refer to FIG. 5 ).

As shown in FIG4 , the first heating device 13 mainly includes a heating section 50, heat insulating blocks 91, 92, 93, a box 60, and plate components 71, 72, 73, 74. As shown in FIG5(b), a wire running groove 56 (56a, 56b) extending along the extension direction is formed in the heating section 50. The wire running groove 56 (56a, 56b) is open downward. The heating section 50 heats the wire Y (wire Ya, Yb) running in the wire running groove 56 (56a, 56b). As shown in FIG4 , the box 60 accommodates the heating section 50 and the heat insulating blocks 91, 92, 93. The plate components 71, 72, 73, 74 are arranged between the heating section 50 and the inner wall surface of the box 60.

As shown in (a) of FIG. 5 , the heating section 50 mainly includes a heat source 51, two heating blocks 52 (52a, 52b) and two connecting parts 54 (54a, 54b). The heat source 51 is, for example, a sheathed heater. As shown in FIG. 6 , the heat source 51 extends along the extension direction. The heating block 52 and the connecting part 54 are configured to be heated by the heat generated by the heat source 51. The heating block 52 and the connecting part 54 extend along the extension direction of the heat source 51. As shown in FIG. 4 , bolts 59 and the like for fixing the components constituting the heating section 50 are exposed on the surface of the heating section 50.

The heating block 52a and the connecting portion 54a are components for heating the wire Ya. The heating block 52b and the connecting portion 54b are components for heating the wire Yb. The components for heating the wire Ya and the components for heating the wire Yb are arranged at opposite sides of each other with the heat source 51 interposed therebetween in the longitudinal direction of the machine body.

Referring to FIG. 5 , the components for heating the wire Ya are described. The heating block 52a is made of a metal material having a large specific heat, such as brass. The heating block 52a is arranged to be in contact with the heat source 51. The heating block 52a is arranged on one side of the body length direction of the heat source 51 (the left side of the paper of FIG. 5 (a)). A recess 53 (53a) extending along the extension direction is formed in the heating block 52a. The recess 53a is open to the lower side. A wire connection portion 54 (54a) is accommodated in the recess 53a.

The connecting portion 54a is, for example, a long strip of SUS. The connecting portion 54a is fixed to the heating block 52a while in contact with the heating block 52a. The connecting portion 54a is heated by the heat transferred from the heat source 51 via the heating block 52a. The connecting portion 54a has a connecting surface 55 (55a) for contacting the wire Y. The connecting surface 55a faces downward. As shown in (b) of Figure 5, the connecting surface 55a is bent into a roughly U-shape that bulges convexly downward in a cross section perpendicular to the length direction of the body. As shown in (a) of Figure 5, the connecting surface 55a is, when viewed from the extension direction, bent into an inverted U-shape that bulges convexly upward.

The wire running groove 56 (56a) is defined by the wall surface of the recessed portion 53a defining the heating block 52a and the connecting surface 55a of the connecting portion 54a. The wire running groove 56 (56a) is open on the lower surface of the heating block 52a. The wire running groove 56 (56a) is open downward. In other words, the direction from the inner side to the outer side of the wire running groove 56 (56a) is downward. The "opening direction" of the present invention is downward.

In addition, the components used for heating the wire Yb are explained. The heating block 52b is arranged on the other side of the body length direction of the heat source 51 (the right side of the paper of (a) in Figure 5). The heating block 52b is in contact with the heat source 51. The heating block 52b is formed with a recess 53b having the same shape as the recess 53a. A connecting portion 54b having the same structure as the connecting portion 54a is accommodated in the recess 53b. The connecting portion 54b has a connecting surface 55b having the same shape as the connecting surface 55a. The wire running groove 56b is defined by the wall surface of the recess 53b defining the heating block 52b and the connecting surface 55b of the connecting portion 54b. Further details are omitted.

The wire Y (Ya, Yb) fed into the first heating device 13 travels in the wire travel groove 56 (56a, 56b) while contacting the wire connection surface 55 (55a, 55b). As a result, the wire Y (Ya, Yb) receives heat from the heating block 52 (52a, 52b) through the wire connection surface 55 (55a, 55b) and is heated. By appropriately setting the type of wire Y, the grade (thickness) of the wire Y, the travel speed of the wire Y and the heating temperature, the temperature of the wire Y can be made the optimal processing temperature.

As shown in FIG. 4 and FIG. 6 , the heat insulating blocks 91, 92, 93 are arranged below the heating unit 50. The heat insulating blocks 91, 92, 93 are made of, for example, gypsum boards. The heat insulating blocks 91, 92, 93 all extend along the extension direction. The heat insulating blocks 91, 92, 93 are arranged along the length direction of the machine body. The gap between the heat insulating blocks 91, 92 becomes a passage when the wire Ya is inserted into the wire running groove 56a. The gap between the heat insulating blocks 92, 93 becomes a passage when the wire Yb is inserted into the wire running groove 56b.

As shown in Fig. 4 , the box 60 mainly includes a main body 61 and a door 62. The main body 61 is a hollow member having a substantially rectangular parallelepiped shape with the extending direction as the longitudinal direction. The door 62 can close an opening 68 formed in the main body 61, which will be described later.

The main body 61 is made of sheet metal. The main body 61 is made of SUS, for example. The main body 61 has an upper wall 61a, two side walls 61b, two side walls 61c and a lower wall 61d. As shown in FIG4, the upper wall 61a extends along the length direction of the body when viewed from the extension direction. The two side walls 61b are respectively connected to the two end portions of the upper wall 61a in the length direction of the body. As shown in FIG6, the two side walls 61c are respectively connected to the two end portions of the upper wall 61a in the extension direction. The side walls 61b and 61c both extend in the up-down direction. As shown in FIG4, the lower wall 61d is located below the upper wall 61a. The lower wall 61d is parallel to the upper wall 61a. The upper wall 61a and the two side walls 61b of the main body 61 are equivalent to the "plate component" of the present invention.

As shown in FIG4 , the main body 61 is formed with an opening 68 at a position opposite to the open end (lower end) of the wire running groove 56 in the up-down direction. The so-called open end of the wire running groove 56 refers to the portion of the wire running groove 56 in the lower surface of the heating block 52 where the wire running groove 56 is open. The opening 68 is formed over the entire length of the main body 61 in the extension direction. The opening 68 is formed in the lower wall 61d.

The positions of the lower wall 61d in the height direction on both sides of the opening 68 in the longitudinal direction of the body are different. That is, the lower surface of the first portion 61d1 on one side of the longitudinal direction of the body (the left side of the paper in FIG. 4 ) of the lower wall 61d is located on an imaginary plane P1 orthogonal to the vertical direction. On the other hand, the lower surface of the second portion 61d2 on the other side of the longitudinal direction of the body (the right side of the paper in FIG. 4 ) of the lower wall 61d is located on an imaginary plane P2 orthogonal to the vertical direction. The imaginary plane P1 is located above the imaginary plane P2.

In addition, as shown in FIG6 and FIG7, openings 69 are formed in the side walls 61c at both ends of the extension direction of the main body 61. The opening 69 is formed in the center of the side wall 61c in the body length direction. The lower side of the opening 69 is open. The opening 69 functions as an entrance and exit for the thread Y running in the thread running groove 56.

As shown in Fig. 4 and Fig. 6, the door 62 is a plate-shaped member extending in the extension direction. The door 62 is configured to be able to swing around a shaft 62a extending in the extension direction. The shaft 62a is attached to the main body 61. The shaft 62a is located below the first portion 61d1 of the lower wall 61d of the main body 61.

As shown in FIG4 , when the door 62 is in the closed position, it covers the first portion 61d1 of the lower wall 61d of the main body 61 and the opening 68. Thus, the opening 68 is closed by the door 62. The door 62 in the closed position swings downward (clockwise in FIG4 ) around the axis 62a, and when it reaches the open position shown by the dotted line in FIG4 , the opening 68 of the main body 61 is open. That is, the door 62 is configured to be movable between the closed position in which the opening 68 of the main body 61 is closed and the open position in which the opening 68 is open. When the door 62 is in the open position, the wire Y can be inserted into the main body 61 of the box 60 through the opening 68 and the wire Y can be set in the wire running groove 56.

Each plate member 71, 72, 73, 74 is made of a sheet metal. The plate members 71, 72, 73, 74 are made of, for example, SUS. Each plate member 71, 72, 73, 74 may also be made of a plurality of sheets of sheet metal. The plate members 71, 72, 73, 74 all extend along the extension direction. The plate members 71, 72, 73, 74 are all generally groove-shaped and open in the downward direction (opening direction of the wire running groove 56).

As shown in FIG. 4 , the plate member 71 has an upper wall 71a and two side walls 71b. The upper wall 71a extends along the length direction of the body when viewed from the extension direction. The two side walls 71b are respectively connected to the two ends of the upper wall 71a in the length direction of the body. The side walls 71b extend in the up-down direction. The plate members 72, 73, 74 respectively have upper walls 72a, 73a, 74a and two side walls 72b, 73b, 74b of the same shape as the plate member 71.

The four plate members 71, 72, 73, 74 and the upper wall 61a and two side walls 61b in the main body 61 of the box 60 are arranged in a nested manner. The plate member 71 arranged at the innermost side is arranged to surround the heating part 50. The plate member 72 is arranged to surround the plate member 71. The plate member 73 is arranged to surround the plate member 72. The plate member 74 is arranged to surround the plate member 73. Furthermore, the upper wall 61a and two side walls 61b in the main body 61 of the box 60 are arranged to surround the plate member 74. In the area opposite to the lower end of the wire running groove 56 (equivalent to the "open end" of the present invention), the four plate members 71, 72, 73, 74 and the upper wall 61a and two side walls 61b of the main body 61 (equivalent to the "plate member" of the present invention) are not arranged.

The four plate members 71, 72, 73, 74 and the main body 61 are arranged in sequence in a direction away from the heating unit 50 in an imaginary plane (e.g., the paper plane of FIG. 4 ) that is orthogonal to the extension direction and intersects the heating unit 50. That is, the plate member 71 is arranged at a position closest to the heating unit 50 among the four plate members 71, 72, 73, 74 and the main body 61. A heat insulating member 80 is arranged between the plate member 71 and the heating unit 50. The heat insulating member 80 is, for example, ceramic fiber or glass wool. In addition, the upper wall 61a and the two side walls 61b of the main body 61 are equivalent to the "plate member located farthest from the heating unit" of the present invention.

The plate members 71, 72, 73, 74 and the upper walls 71a, 72a, 73a, 74a, 61a of the main body 61 are located above the heating unit 50. The lower ends of the side walls 71b, 72b, 73b, 74b, 61b of the plate members 71, 72, 73, 74 and the main body 61 are located below the heating unit 50. That is, the plate members 71, 72, 73, 74 and the main body 61 cover the entire heating unit 50 in the up-down direction (corresponding to the "orthogonal direction" of the present invention).

The four plate members 71, 72, 73, 74, the upper wall 61a of the main body 61, and the two side walls 61b are arranged opposite to each other and separately. Between the two opposing plate members, inter-plate spaces 75a, 75b, 75c are formed. An inter-plate space 75a is formed between the adjacent plate members 71 and 72. An inter-plate space 75b is formed between the adjacent plate members 72 and 73. An inter-plate space 75c is formed between the adjacent plate members 73 and 74. In addition, an inter-plate space 75d is formed between the plate member 74 and the upper wall 61a and the two side walls 61b of the main body 61. Hereinafter, when the inter-plate spaces 75a, 75b, 75c, and 75d are not distinguished, they are referred to as the inter-plate space 75. As shown in Fig. 4, each inter-board space 75 is a groove-shaped space open downward when viewed from the extension direction. Each inter-board space 75 is a space that is not divided. Each inter-board space 75 is closed.

Air layers are formed in each of the four inter-plate spaces 75. That is, in an imaginary plane (e.g., the paper of FIG. 4 ) that is orthogonal to the extension direction and intersects the heating unit 50, four air layers are formed in each inter-plate space 75 and are arranged in a direction away from the heating unit 50. The thickness of the air layer is preferably greater than 5 mm and less than 15 mm. The thickness of the air layer may also be greater than 0 and less than 5 mm. The thickness of the air layer may also be greater than 15 mm. In the present embodiment, the thickness of the four air layers is 10 mm. The thickness of the four air layers may also be different from each other.

The opposing surfaces of the two plate members 71 and 72 constituting the plate space 75a located closest to the heating unit 50 among the four plate spaces 75 are mirror-polished. That is, the surface of the plate member 71 close to the heating unit 50 among the two plate members 71 and 72 on the side opposite to the heating unit 50 is mirror-polished. In addition, the surface of the plate member 72 far from the heating unit 50 among the two plate members 71 and 72 on the side of the heating unit 50 is mirror-polished.

As shown in Fig. 6 and Fig. 7, first sealing members 82 are respectively arranged between the two ends of the plate members 71, 72, 73, 74 and the side wall 61c in the main body 61 of the box 60 in the extension direction. The first sealing members 82 seal the two ends of the extension direction in the four inter-plate spaces 75. Here, the two ends of the extension direction in each inter-plate space 75 are the boundary parts of the inter-plate space 75, which are the parts of the inter-plate space 75 that are not defined by the two plate members constituting the inter-plate space 75. By sealing the two ends of the extension direction in the inter-plate space 75 by the first sealing members 82, it is possible to suppress the air from entering and exiting the inter-plate space 75 through the ends.

The first sealing member 82 is made of a heat insulating material such as rock wool. The material of the first sealing member 82 is not limited to asbestos. The density of the first sealing member 82 is preferably 80 kg/m ³ or more. The density of the first sealing member 82 may also be less than 80 kg/m ^3. The density of the heat insulating material constituting the first sealing member 82 is preferably determined in consideration of the ventilation performance of the first sealing member 82. The lower the ventilation performance of the first sealing member 82 (the greater the density), the less air leaks from the inter-plate space 75, and the higher the airtightness of the inter-plate space 75.

As shown in FIG. 4 and FIG. 7 , a bent portion 71c is formed at the end of the lower side of the plate member 71. In FIG. 7 , in order to facilitate understanding of the bent portion 71c, a hatching line is marked on the lower surface of the bent portion 71c. The bent portions 71c are respectively formed at the lower ends of the two side walls 71b in the plate member 71. The bent portion 71c of the side wall 71b on one side of the heat insulating block 92 in the longitudinal direction of the body (the left side of the paper in FIG. 4 ) of the two side walls 71b is formed by bending the lower end of the side wall 71b to one side in the longitudinal direction of the body by approximately 90°. The bent portion 71c of the side wall 71b on the other side (right side of the paper of FIG. 4 ) of the heat insulating block 92 in the longitudinal direction of the body is formed by bending the lower end of the side wall 71b by approximately 90° toward the other side in the longitudinal direction of the body.

As shown in FIG. 7 , the bent portion 71c extends over the entire length of the plate member 71 in the extension direction. Three protrusions 71d are formed on the bent portion 71c of each side wall 71b. The three protrusions 71d are located at both ends and the center of the bent portion 71c in the extension direction. The length of the bent portion 71c in the body length direction is substantially the same as the interval between the plate member 71 and the plate member 72 in the body length direction, except for the portion where the protrusions 71d are formed. The length of the bent portion 71c in the body length direction in the portion where the protrusions 71d are formed is substantially the same as the interval between the plate member 71 and the plate member 73 in the body length direction.

As shown in FIG4 , a bent portion 72c is formed at the end of the lower side of the plate member 72. The bent portions 72c are formed at the lower ends of the two side walls 72b in the plate member 72. The bent portion 72c of the side wall 72b on one side of the heat insulating block 92 in the longitudinal direction of the body (the left side of the paper surface of FIG4 ) of the two side walls 72b is formed by bending the lower end of the side wall 72b to the other side in the longitudinal direction of the body by approximately 90°. The bent portion 72c of the side wall 72b on the other side (right side of the paper of FIG. 4 ) of the heat insulating block 92 in the longitudinal direction of the body is formed by bending the lower end of the side wall 72b approximately 90 degrees toward one side in the longitudinal direction of the body.

The bent portion 72c extends over the entire length of the plate member 72 in the extending direction. The length of the bent portion 72c in the body length direction is substantially the same as the interval in the body length direction between the plate members 71 and 72. The bent portion 72c is located above the bent portion 71c of the plate member 71.

The bent portion 71c of the plate member 71 and the bent portion 72c of the plate member 72 are fixed by bolts (not shown) or the like. That is, the plate members 71 and 72 are fixed to each other at the bent portions 71c and 72c.

The end of the lower side (corresponding to the "one side in the orthogonal direction" of the present invention) of the inter-plate space 75a is sealed by the bent portions 71c and 72c of the two plate members 71 and 72 constituting the inter-plate space 75a. The bent portions 71c and 72c also function as gaskets for ensuring the interval between the two plate members 71 and 72. In addition, the protrusion 71d of the bent portion 71c of the plate member 71 functions as a gasket for ensuring the interval between the plate members 72 and 73.

As shown in FIG. 4 and FIG. 7 , a bent portion 73c is formed at the end of the lower side of the plate member 73. In FIG. 7 , in order to facilitate understanding of the bent portion 73c, a hatching line is marked on the lower surface of the bent portion 73c. The bent portion 73c is formed at the lower end portions of the two side walls 73b in the plate member 73. The bent portion 73c of the side wall 73b on one side of the longitudinal direction of the body (the left side of the paper in FIG. 4 ) of the two side walls 73b is formed by bending the lower end portion of the side wall 73b to one side of the longitudinal direction of the body by approximately 90°. The bent portion 73c of the side wall 73b on the other side in the longitudinal direction of the body (the right side in FIG. 4 ) of the two side walls 73b is formed by bending the lower end of the side wall 73b by approximately 90° toward the other side in the longitudinal direction of the body.

As shown in Fig. 7 , the bent portion 73c extends over the entire length of the plate member 73 in the extending direction. The length of the bent portion 73c in the longitudinal direction of the body is substantially the same as the distance between the plate members 73 and 74 in the longitudinal direction of the body.

As shown in Fig. 7, a clip plate 78 is mounted on the lower surface of the bent portion 73c of the two side walls 73b formed in the plate member 73. The clip plate 78 mounted on the bent portion 73c of the side wall 73b located on one side of the heat insulating block 92 in the longitudinal direction of the machine body (the side on the paper surface of Fig. 7) of the two side walls 73b of the plate member 73 is extended to the side wall 61b of the main body 61 on the side closer to the longitudinal direction of the machine body than the bent portion 73c. The clip 78 mounted on the bent portion 73c of the side wall 73b on the other side (lower side of the paper in FIG. 7 ) of the heat insulating block 92 in the longitudinal direction of the machine body of the two side walls 73b of the plate member 73 extends to the side wall 61b of the main body 61 on the other side of the bent portion 73c in the longitudinal direction of the machine body. The clip 78 also functions as a gasket to ensure the spacing between the plate member 74 and the main body 61.

Three clamping plates 78 are installed on each of the bent portions 73c formed on the two side walls 73b of the plate member 73. The three clamping plates 78 installed on one bent portion 73c are arranged at different positions in the extension direction. The clamping plate 78 located on one side of the extension direction (the left side of the paper of FIG. 7 ) among the three clamping plates 78 is located between the protrusion 71d located on one side of the extension direction and the protrusion 71d located in the center of the three protrusions 71d formed on the bent portion 71c in the extension direction. The clamping plate 78 located on the other side of the extension direction (the right side of the paper of FIG. 7 ) among the three clamping plates 78 is located between the protrusion 71d located on the other side of the extension direction and the protrusion 71d located in the center of the three protrusions 71d formed on the bent portion 71c in the extension direction. The clamping plate 78 located in the center of the three clamping plates 78 in the extending direction is located at the same position in the extending direction as the protruding portion 71d located in the center of the three protruding portions 71d formed on the bent portion 71c.

As shown in FIG4 , a bent portion 74c is formed at the end of the lower side of the plate member 74. The bent portions 74c are respectively formed at the lower ends of the two side walls 74b in the plate member 74. The bent portion 74c of the side wall 74b on one side of the heat insulating block 92 in the longitudinal direction of the body (the left side of the paper surface of FIG4 ) of the two side walls 74b is formed by bending the lower end of the side wall 74b to the other side in the longitudinal direction of the body by approximately 90°. The bent portion 74c of the side wall 74b on the other side (right side of the paper of FIG. 4 ) of the heat insulating block 92 in the longitudinal direction of the body is formed by bending the lower end of the side wall 74b by approximately 90° toward one side in the longitudinal direction of the body.

The bent portion 74c extends over the entire length of the plate member 74 in the extending direction. The length of the bent portion 74c in the body length direction is substantially the same as the interval in the body length direction between the plate members 73 and 74. The bent portion 74c is located above the bent portion 73c of the plate member 73.

The bent portion 73c of the plate member 73 and the bent portion 74c of the plate member 74 are fixed by bolts (not shown) or the like. That is, the plate members 73 and 74 are fixed to each other at the bent portions 73c and 74c.

The lower end of the inter-plate space 75c (corresponding to the "one side in the orthogonal direction" of the present invention) is sealed by the bent portions 73c, 74c of the two plate members 73, 74 constituting the inter-plate space 75c. The bent portions 73c, 74c also function as gaskets to ensure the spacing between the two plate members 73, 74.

As described above, the inter-plate space 75a located closest to the heating unit 50 among the four inter-plate spaces 75 is sealed by the bent portions 71c and 72c (equivalent to the "first bent portion" of the present invention). In addition, the inter-plate space 75c is sealed by the bent portions 73c and 74c (equivalent to the "second bent portion" of the present invention).

The bent portions 71c, 72c and the bent portions 73c, 74c that seal the two inter-plate spaces 75a, 75c are both located below the heating unit 50. In addition, the vertical positions of the bent portions 71c, 72c and the bent portions 73c, 74c are different from each other. More specifically, the bent portions 71c, 72c are located above the bent portions 73c, 74c. The bent portions 71c, 72c are located closer to the heating unit 50 in the vertical direction than the bent portions 73c, 74c.

As shown in FIG. 4 , in the up-down direction, a second sealing member 83 is arranged between the lower end portions of the plate members 71, 72, 73, 74 and the lower wall 61d in the main body 61 of the box 60. The second sealing member 83 is arranged on both sides of the opening 68 formed in the main body 61 of the box 60 in the longitudinal direction of the machine body. The second sealing member 83 seals the lower end portions of the inter-plate spaces 75b and 75d. That is, the second sealing member 83 seals the lower end portions of all the inter-plate spaces 75 that are not sealed by the bent portions, i.e., the inter-plate spaces 75b and 75d.

That is, one of the two inter-plate spaces formed by the three adjacent plates (corresponding to the "first plate member, the second plate member, and the third plate member" of the present invention) of the plate members 71, 72, 73, 74 and the main body 61 (the upper wall 61a and the two side walls 61b) is sealed by the bent portions 71c, 72c, the bent portions 73c, 74c, and the other is sealed by the second sealing member 83. For example, when considering the three adjacent plate members 71, 72, 73, the inter-plate space 75a between the plate members 71 and 72 is sealed by the bent portions 71c and 72c, and the inter-plate space 75b between the plate members 72 and 73 is sealed by the second sealing member 83.

Here, the end portion of the lower side in the inter-plate space 75b is the boundary portion of the inter-plate space 75b, and is a portion of the inter-plate space 75b that is not defined by the plate members 72 and 73 that constitute the inter-plate space 75b. In addition, the end portion of the lower side in the inter-plate space 75d is the boundary portion of the inter-plate space 75d, and is a portion of the inter-plate space 75d that is not defined by the plate member 74 and the main body 61 that constitute the inter-plate space 75d. By sealing the end portion of the lower side in the inter-plate spaces 75b and 75d with the second sealing member 83, it is possible to suppress the air from entering and exiting the inter-plate spaces 75b and 75d through the end portion.

The second sealing member 83 covers the lower surface of the bent portion 71c that seals the inter-plate space 75a (the surface on the opposite side to the inter-plate space 75a side). In addition, the second sealing member 83 covers the lower surface of the bent portion 73c that seals the inter-plate space 75c (the surface on the opposite side to the inter-plate space 75c side). That is, the second sealing member 83 is equivalent to the "covering member" of the present invention. That is, the second sealing member 83 covers the lower surfaces of the bent portions 71c and 73c of all the inter-plate spaces 75 sealed by the bent portions in the inter-plate space 75, i.e., the inter-plate spaces 75a and 75c.

Here, as shown in FIG8 , in the second sealing member 83 located on one side of the opening 68 in the longitudinal direction of the body (the left side of the paper surface of FIG8 ), the thickness in the vertical direction of the portion covering the bent portion 71c of the sealing inter-plate space 75a is set to thickness Ta1. In addition, in the second sealing member 83, the thickness in the vertical direction of the portion covering the bent portion 73c of the sealing inter-plate space 75c is set to thickness Tb1. At this time, thickness Ta1 is greater than thickness Tb1.

In addition, in the second sealing member 83 located on the other side of the opening 68 in the longitudinal direction of the body (the right side of the paper surface of FIG. 8 ), the thickness in the vertical direction of the portion covering the bent portion 71c of the sealing inter-plate space 75a is set to thickness Ta2. Furthermore, in the second sealing member 83, the thickness in the vertical direction of the portion covering the bent portion 73c of the sealing inter-plate space 75c is set to thickness Tb2. At this time, thickness Ta2 is greater than thickness Tb2.

The second sealing member 83 is made of a heat insulating material such as asbestos. The material of the second sealing member 83 is not limited to asbestos. The density of the second sealing member 83 is preferably 80 kg/m ³ or more. The density of the second sealing member 83 may be less than 80 kg/m ^3. The density of the heat insulating material constituting the second sealing member 83 is preferably determined in consideration of the ventilation performance of the second sealing member 83. The lower the ventilation performance of the second sealing member 83 (the greater the density), the less the amount of air escaping from the inter-plate spaces 75a, 75c, and the higher the airtightness of the inter-plate spaces 75a, 75c.

As shown in Fig. 4 and Fig. 6, a plurality of gasket members 81 are arranged in each inter-board space 75. As shown in Fig. 4, the gasket members 81 are arranged at the corners of the inter-board space 75 having a groove shape opening downward. In other words, the gasket members 81 are arranged at both ends of the upper part of the inter-board space 75 in the longitudinal direction of the machine body.

The bent portions 71c and 72c sealing the inter-plate space 75a and the gasket member 81 arranged in the inter-plate space 75b adjacent to the inter-plate space 75a are arranged at different positions in the vertical direction. The bent portions 73c and 74c sealing the inter-plate space 75c and the gasket members 81 arranged in the inter-plate spaces 75b and 75d adjacent to the inter-plate space 75c are arranged at different positions in the vertical direction. In addition, as shown in FIG. 6 , the gasket members 81 arranged in the two adjacent inter-plate spaces 75 are arranged at different positions in the extension direction.

As described above, the adjacent plate members 71 and 72 are fixed to each other at the bent portions 71c and 72c. In addition, the adjacent plate members 73 and 74 are fixed to each other at the bent portions 73c and 74c. The adjacent plate members 72 and 73 are fixed to each other via the connecting member 84. Furthermore, the plate member 74 and the main body 61 of the box 60 are fixed to each other via the connecting member 85.

As shown in Fig. 4 and Fig. 6, the connecting member 84 is arranged in the inter-board space 75b. The connecting member 84 is arranged in the center of the longitudinal direction of the machine body in the upper part of the inter-board space 75b having a groove shape opening downward. The connecting member 84 is arranged at both ends of the extension direction of the inter-board space 75b. The plate members 72 and 73 are fixed to each other at the upper ends through the connecting member 84.

As shown in Fig. 4 and Fig. 6, the connecting member 85 is arranged in the inter-board space 75d. The connecting member 85 is arranged in the center of the longitudinal direction of the machine body in the upper part of the inter-board space 75d having a groove shape opening downward. The connecting member 85 is arranged at both ends of the extension direction of the inter-board space 75d. The plate member 74 and the main body 61 of the box 60 are fixed to each other at the upper end through the connecting member 85.

(Features of the embodiment) As described above, the first heating device 13 of the present embodiment is formed with a wire running groove 56 extending along the extension direction, and has a heating section 50 for heating the wire Y running in the wire running groove 56, a box 60 for storing the heating section 50, a plurality of plate members 71, 72, 73, 74, a first sealing member 82, and a second sealing member 83. The plate members 71, 72, 73, 74 and the upper wall 61a and two side walls 61b in the main body 61 of the box 60 are arranged opposite to each other and separately, and are arranged in a direction away from the heating section 50 in an imaginary plane that is orthogonal to the extension direction and intersects the heating section 50. The first sealing member 82 and the second sealing member 83 seal at least a portion of the end of the inter-plate space 75 between the two opposing plate members and between the plate member 74 and the main body 61. A plurality of air layers formed in the inter-plate space 75 are arranged in a direction away from the heating unit 50 in a virtual plane that is orthogonal to the extension direction and intersects the heating unit 50.

According to the above-mentioned structure, the heat can be suppressed from being released from the heating part 50 to the outside by arranging a plurality of air layers in a direction away from the heating part 50 in an imaginary plane that is orthogonal to the extension direction and intersects the heating part 50. In addition, the thermal conductivity of the air layer is relatively small, so even if the thickness is small, sufficient heat insulation performance is exerted. Furthermore, at least a portion of the end of the inter-plate space 75 is sealed by the first sealing member 82 and the second sealing member 83, so that the air can be suppressed from entering and exiting the inner side and the outer side of the inter-plate space 75. Thus, the generation of convection in the air layer can be suppressed. Therefore, it is difficult to cause the transfer of heat between the two plate members constituting the inter-plate space 75 and between the plate member 74 and the main body 61 of the box 60, and the heat insulation performance of the air layer can be further improved. Therefore, power consumption can be reduced without increasing the size of the device.

In addition, in the first heating device 13 of the present embodiment, the inter-plate space 75 is sealed. According to this structure, since the inter-plate space 75 is sealed, it is possible to reliably suppress the air from entering and exiting the inner side and the outer side of the inter-plate space 75. Therefore, the heat insulation performance of the air layer can be further improved.

Furthermore, in the first heating device 13 of the present embodiment, each plate member 71, 72, 73, 74 and the upper wall 61a and two side walls 61b of the main body 61 extend along the extension direction. The first sealing member 82 is made of a heat insulating material, and seals the two end portions of the extension direction of the inter-plate space 75 respectively. According to this structure, the first sealing member 82 seals the two end portions of the specified direction of the inter-plate space 75, and the air can be suppressed from entering and exiting the two end portions. In addition, since the first sealing member 82 that seals the two end portions of the extension direction of the inter-plate space 75 is made of a heat insulating material, it is possible to suppress heat transfer between adjacent plate members and between the plate member 74 and the main body 61 of the box 60 through the first sealing member 82. As a result, the heat insulation performance caused by the air layer can be further improved.

Furthermore, in the first heating device 13 of the present embodiment, the density of the first sealing member 82 is 80 kg/ ^m3 or more. According to this configuration, by making the first sealing member 82 high in density, it is possible to more reliably suppress the air from entering and exiting the inner side and the outer side of the inter-plate space 75 through the first sealing member 82. Therefore, the inter-plate space 75 can be more reliably sealed.

In addition, the first heating device 13 of the present embodiment is further provided with a gasket member 81 disposed in each inter-plate space 75. When the thickness of the inter-plate space 75 is uneven, convection is easily generated in the air layer formed in the inter-plate space 75 due to the temperature difference generated in the inter-plate space 75. According to this configuration, by disposing the gasket member 81 in the inter-plate space 75, the thickness of the inter-plate space 75 can be made uniform. Therefore, the convection generated in the air layer can be suppressed, so the heat insulation performance caused by the air layer can be further improved.

Furthermore, in the first heating device 13 of the present embodiment, the gasket members 81 respectively arranged in the two adjacent inter-plate spaces 75 are arranged at different positions in the extension direction. When the gasket members 81 respectively arranged in the two adjacent inter-plate spaces 75 are arranged at the same position in the extension direction, heat easily moves between the plate members and between the plate members and the main body 61 of the box 60 through the two gasket members 81. In this configuration, heat is difficult to move between the plate members and between the plate members and the main body 61 of the box 60 through the two gasket members 81, and the heat insulation performance due to the air layer can be further improved.

Furthermore, in the first heating device 13 of the present embodiment, the lower side end of the inter-plate space 75a is sealed by the bent portions 71c and 72c formed by bending the lower side end of the plate members 71 and 72 constituting the inter-plate space 75a. In addition, the lower side end of the inter-plate space 75c is sealed by the bent portions 73c and 74c formed by bending the lower side end of the plate members 73 and 74 constituting the inter-plate space 75c. In two adjacent inter-plate spaces 75, the bent portions 71c and 72c, the bent portions 73c and 74c that seal the inter-plate space 75 (75a and 75c) on one side, and the gasket member 81 (75b and 75d) disposed in the other inter-plate space 75 are disposed at different positions in the vertical direction. According to this structure, the inter-plate spaces 75a and 75c can be sealed by sealing the inter-plate spaces 75a and 75c through the bent portions 71c, 72c, 73c and 74c which are part of the plate members 71, 72, 73 and 74. In addition, heat is difficult to move between the plate members and between the plate members and the main body 61 of the box 60 through the bent portions 71c, 72c, 73c and 74c and the gasket member 81, and the heat insulation performance due to the air layer can be further improved.

Furthermore, in the first heating device 13 of the present embodiment, the bent portions 71c and 72c function as gaskets for ensuring the interval between the plate members 71 and 72. Furthermore, the bent portions 73c and 74c function as gaskets for ensuring the interval between the plate members 73 and 74. According to this configuration, the thickness of the inter-plate spaces 75a and 75c can be made uniform by the bent portions 71c and 72c and the bent portions 73c and 74c.

In addition, in the first heating device 13 of the present embodiment, the ends of the lower sides of the inter-plate spaces 75a and 75c are sealed by the bent portions 71c and 72c, and the bent portions 73c and 74c. The ends of the lower sides of the inter-plate spaces 75b and 75d are sealed by the second sealing member 83 formed of a heat insulating material. In the case where a plurality of adjacent inter-plate spaces 75 are sealed by the bent portions, heat is sequentially transferred between the plurality of plate members via the bent portions that seal each inter-plate space 75. According to this configuration, the inter-plate spaces 75b and 75d are sealed by the second sealing member 83 formed of a heat insulating material. Therefore, it is possible to suppress the heat transferred between the plate members 71 and 72 via the bent portions 71c and 72c from being transferred to the plate member 73. In addition, the heat transmitted between the plate members 73 and 74 through the bent portions 73c and 74c can be suppressed from being transmitted to the main body 61 of the box 60. Thus, the airtightness of the space 75 between the plates can be maintained, and the heat insulation performance by the air layer can be further improved.

In addition, in the first heating device 13 of the present embodiment, the positions of the bent portions 71c, 72c of the sealed inter-plate space 75a and the bent portions 73c, 74c of the sealed inter-plate space 75c in the vertical direction are different from each other. When the positions of the bent portions 71c, 72c, 73c, 74c of the sealed inter-plate spaces 75a, 75c in the vertical direction are the same, heat may move between different plate components through these bent portions 71c, 72c, 73c, 74c. In this configuration, it is difficult for heat to move between different plate components through the bent portions 71c, 72c, 73c, 74c, and the heat insulation performance caused by the air layer can be further improved.

Furthermore, in the first heating device 13 of the present embodiment, the second sealing member 83 covers the surface of the bent portion 71c sealing the inter-plate space 75a on the side opposite to the inter-plate space 75a, and the surface of the bent portion 73c sealing the inter-plate space 75c on the side opposite to the inter-plate space 75c. According to this configuration, the second sealing member 83 can suppress the release of heat from the bent portions 71c and 73c. In particular, the release of heat from the bent portion 71c of the plate member 71 located near the heating unit 50 and reaching a high temperature can be reliably suppressed.

In addition, in the first heating device 13 of the present embodiment, the second sealing member 83 also serves as a covering member that covers the surfaces of the bent portions 71c, 73c of the sealing plate interspaces 75a, 75c. According to this configuration, the configuration of the first heating device 13 can be simplified compared to a case where the covering member is a different member from the second sealing member 83.

Furthermore, in the first heating device 13 of the present embodiment, the second sealing member 83 covers the lower end portions of all inter-plate spaces 75b and 75d that are not sealed by the bent portion in the inter-plate spaces 75, and covers the lower surfaces of the bent portions 71c and 73c of all inter-plate spaces 75a and 75c that are sealed by the bent portion in the inter-plate spaces 75. According to this configuration, it is possible to achieve a configuration in which the airtightness of all inter-plate spaces 75 is maintained by one second sealing member 83, and the heat insulation performance by the air layer is further improved.

In the first heating device 13 of the present embodiment, the bent portions 71c and 72c sealing the inter-plate space 75a are located near the heating unit 50 in the vertical direction compared to the bent portions 73c and 74c sealing the inter-plate space 75c. Furthermore, the thicknesses Ta1 and Ta2 of the portion of the second sealing member 83 covering the bent portion 71c in the vertical direction are greater than the thicknesses Tb1 and Tb2 of the portion covering the bent portion 73c in the vertical direction. According to this configuration, it is possible to reliably suppress the release of heat from the bent portion 71c which is disposed near the heating unit 50 in the vertical direction and has a high temperature.

Furthermore, in the first heating device 13 of the present embodiment, the plate members 71 and 72 are fixed to each other at the bent portions 71c and 72c formed at the lower end portions thereof. The plate members 73 and 74 are fixed to each other at the bent portions 73c and 74c formed at the lower end portions thereof. The plate members 72 and 73 are fixed to each other at the upper end portions via the connecting member 84. The plate member 74 and the main body 61 of the box 60 are fixed to each other at the upper end portions via the connecting member 85. According to this configuration, the layer thickness between the plate members 71 and 72 can be maintained by fixing the bent portions 71c and 72c to the plate members 71 and 72. The layer thickness between the plate members 73 and 74 can be maintained by fixing the bent portions 73c and 74c to the plate members 73 and 74. Furthermore, the thickness between the plate members 72 and 73 can be maintained by the connecting member 84 that fixes the plate members 72 and 73. The thickness between the plate member 74 and the main body 61 of the box 60 can be maintained by the connecting member 85 that fixes the plate member 74 and the main body 61 of the box 60. Here, when the fixed portions between the plate members and between the plate member 74 and the main body 61 of the box 60 are arranged close to each other, heat easily moves between the plate members and between the plate member and the main body 61 of the box 60 through these fixed portions. In this configuration, the fixed portions of the plate members 71 and 72 (the portions where the bent portions 71c and 72c are formed), the fixed portions of the plate members 73 and 74 (the portions where the bent portions 73c and 74c are formed), the fixed portions of the plate members 72 and 73 (the portions connected via the connecting member 84), and the fixed portions of the plate member 74 and the main body 61 of the box 60 (the portions connected via the connecting member 85) can be separated in the vertical direction. Therefore, it is difficult for heat to move between the plate members and between the plate member and the main body 61 of the box 60 through the fixed portions, and the heat insulation performance due to the air layer can be further improved.

Furthermore, in the first heating device 13 of the present embodiment, the second sealing member 83 is made of a heat insulating material and seals the lower end of the inter-plate spaces 75b and 75d. According to this structure, the lower end of the inter-plate spaces 75b and 75d is sealed by the second sealing member 83, and the air can be suppressed from entering and exiting from the end. In addition, since the second sealing member 83 is made of a heat insulating material, the heat can be suppressed from being transferred between the adjacent plate members 72 and 73 and between the plate member 74 and the main body 61 of the box 60 through the second sealing member 83. As a result, the heat insulation performance caused by the air layer can be further improved.

In the first heating device 13 of the present embodiment, the density of the second sealing member 83 is 80 kg/ ^m3 or more. According to this configuration, by making the second sealing member 83 high in density, it is possible to more reliably suppress the air from entering and exiting the inner and outer sides of the inter-plate spaces 75b and 75d through the second sealing member 83. Therefore, the inter-plate spaces 75b and 75d can be more reliably sealed.

Moreover, in the first heating device 13 of the present embodiment, the thickness of the air layer is greater than 5 mm and less than 15 mm. If the thickness of the air layer is large, convection is likely to occur. If convection occurs in the air layer, heat is likely to move between the two plate members constituting the inter-plate space 75 in which the air layer is formed, and between the plate member 74 and the main body 61 of the box 60. On the other hand, if the thickness of the air layer is small, adjacent plate members and the plate member 74 and the main body 61 of the box 60 may come into contact with each other. In this case, heat moves between adjacent plate members and between the plate member 74 and the main body 61 of the box 60 through the contact portion. According to this configuration, the thickness of the air layer can be formed to a size that can suppress convection in the air layer, and can be formed to a size that makes it difficult for the plate members to contact each other, and the plate member 74 and the main body 61 of the box 60. Thus, the heat insulation performance caused by the air layer can be further improved.

Furthermore, the first heating device 13 of the present embodiment also has a heat insulating member 80, which is arranged between the plate member 71 closest to the heating unit 50 among the plurality of plate members 71, 72, 73, and 74 and the heating unit 50. Bolts 59 and the like used to fix the components constituting the heating unit 50 are exposed on the surface of the heating unit 50, and there are bumps on the surface. Therefore, it is difficult to form an air layer with uniform thickness and high heat insulating performance between the surface of the heating unit 50 and the plate member 71. In this configuration, by arranging the heat insulating member 80 between the heating unit 50 and the plate member 71, it is possible to further suppress the heat from being released from the heating unit 50 to the outside.

Furthermore, in the first heating device 13 of the present embodiment, the thread running groove 56 is defined by the heating portion 50. According to this configuration, the thread Y can be efficiently heated.

Furthermore, in the first heating device 13 of the present embodiment, the thread running groove 56 is open downward, and the four plate members 71, 72, 73, 74 and the upper wall 61a and two side walls 61b of the main body 61 are not arranged in the area opposite to the lower end of the thread running groove 56. According to this structure, the area opposite to the lower end of the thread running groove 56, which becomes the area through which the thread Y passes when the thread Y is inserted into the thread running groove 56, can be vacated.

Furthermore, in the first heating device 13 of the present embodiment, each plate member 71, 72, 73, 74 is a groove-shaped member extending in the extension direction and opening downward. The plurality of plate members 71, 72, 73, 74 and the upper wall 61a and two side walls 61b of the main body 61 are arranged in a nested manner, and the plate member 71 arranged at the innermost side is arranged to surround the heating portion 50. According to this configuration, the area through which the wire Y passes when the wire Y is inserted into the wire running groove 56 can be vacated, and the heating portion 50 can be surrounded by an air layer of the inter-plate space 75 formed between two adjacent plate members and between the plate member 74 and the main body 61. Therefore, it is possible to effectively suppress the heat from being released from the heating portion 50 to the outside.

Furthermore, in the first heating device 13 of the present embodiment, the opposing surfaces of the two plate members 71 and 72 constituting the plate space 75a located closest to the heating part 50 among the four plate spaces 75 are mirror-polished. According to this structure, the radiant heat from the heating part 50 can be suppressed by the mirror surface of the plate members 71 and 72. Therefore, the heat transfer caused by radiation can be suppressed, and the power consumption can be further reduced. In addition, if the surfaces of multiple plate members are mirror-polished, the cost increases. In the present structure, by mirror-polishing the surface of the plate space 75a positioned closest to the heating part 50, the radiant heat from the heating part 50 can be suppressed most effectively, and the increase in cost can be suppressed. Furthermore, the dirt on the mirror-polished surface is easy to become conspicuous. In this structure, since the surface of the partition plate space 75a cannot be seen from the outside, the dirt attached to the mirror surface is difficult to be noticed.

The embodiments of the present invention are described above based on the drawings, but it should be understood that the specific configuration is not limited to these embodiments. The scope of the present invention is not indicated by the description of the above embodiments but by the scope of the patent application, and further includes the meaning that is equal to the scope of the patent application and all changes within the scope.

In the above embodiment, the case where the present invention is applied to the first heating device 13 of the false twisting machine 1 has been described. However, the present invention can also be applied to the second heating device 19 . Hereinafter, as a modified example of the above-described embodiment, a case in which the present invention is applied to the second heating device 19 will be described.

As described above, one second heating device 19 is provided in each span. As shown in Fig. 9 and Fig. 10, the second heating device 19 has a plurality of heating parts 150. As shown in Fig. 10 and Fig. 11 (b), the heating parts 150 extend in the up-down direction. That is, in this modification, the up-down direction is equivalent to the "prescribed direction" of the present invention.

As shown in (a) and (b) of Figure 11, the heating section 150 has a tube 151 extending in the up-down direction, and two tubes 152a and 152b inserted into the tube 151. The tube 151 is filled with a heat medium 154. In addition, as shown in Figure 10, the upper ends of the tubes 151 of the plurality of heating sections 150 are connected to each other through a tube 153. Through the tube 153, the heat medium 154 flows between the tubes 151 of the plurality of heating sections 150. The tubes 152a and 152b serve as thread travel paths for the threads Ya and Yb, respectively. The second heating device 19 is heated by the heat medium 154, and heats the air in the space inside the tubes 152a and 152b, thereby heating the threads Ya and Yb traveling in the tubes 152a and 152b.

As shown in Fig. 9 and Fig. 10, the plurality of heating units 150 are accommodated in the box 160. Plate members 171, 172, 173, 174 are arranged between the plurality of heating units 150 and the inner wall surface of the box 160. The main body 161 of the box 160 and the plate members 171, 172, 173, 174 all have a rectangular shape that is long in the longitudinal direction of the body in a cross section that is orthogonal to the up-down direction. The main body 161 of the box 160 is equivalent to the "plate member" of the present invention.

The plate members 171, 172, 173, and 174 are arranged to be separated from each other and to be opposed to each other. The plate members 171, 172, 173, and 174 are arranged in a direction away from the heating unit 150 in a virtual plane (e.g., the paper plane of FIG. 9 ) that is orthogonal to the up-down direction and intersects the heating unit 150. The plate member 171 disposed at the innermost side surrounds the plurality of heating units 150.

Between the two opposing plate members, there are formed inter-plate spaces 175a, 175b, and 175c. In addition, between the plate member 174 and the main body 161, there is formed an inter-plate space 175d. Air layers are formed in these four inter-plate spaces 175a, 175b, 175c, and 175d (175), respectively. That is, in an imaginary plane (e.g., the paper surface of FIG. 9 ) that is orthogonal to the up-down direction and intersects the heating unit 150, four air layers formed in each inter-plate space 175 are arranged in a direction away from the heating unit 150.

As shown in FIG. 10 , the upper end of the inter-plate space 175 is sealed by a sealing member 182. In addition, the lower end of the inter-plate space 175 is sealed by a sealing member 183. The sealing members 182 and 183 are equivalent to the "first sealing member" of the present invention. It is sufficient to provide only one of the sealing member 182 and the sealing member 183. The sealing member 182 may seal at least one of the plurality of inter-plate spaces 175a, 175b, 175c, and 175d. The sealing member 183 may seal at least one of the plurality of inter-plate spaces 175a, 175b, 175c, and 175d.

In this second heating device 19, similarly to the first heating device 13 of the above-mentioned embodiment, it is possible to reduce power consumption without increasing the size of the device.

Furthermore, in the above-mentioned embodiment, the first sealing member 82 is used to seal both ends of the inter-plate space 75 in the extension direction, and the second sealing member 83 is used to seal the end of the lower side of the inter-plate space 75, but the present invention is not limited thereto. The first heating device 13 only needs to include one of the first sealing member 82 and the second sealing member 83. The first heating device 13 only needs to include a sealing member that seals at least a portion of the end of the inter-plate space 75.

In addition, in the above-mentioned embodiment, the case where all the inter-board spaces 75 are sealed is described. However, the inter-board spaces 75 do not necessarily have to be sealed. In addition, only a part of the inter-board spaces 75 among the plurality of inter-board spaces 75 may be sealed.

Furthermore, in the above-mentioned embodiment, the first sealing member 82 made of a heat insulating material seals both ends of the inter-plate space 75 in the extension direction, but the present invention is not limited thereto. The first sealing member 82 may seal one of the two ends of the inter-plate space 75 in the extension direction. In addition, the first sealing member 82 may seal at least one of the plurality of inter-plate spaces 75a, 75b, 75c, 75d. The first sealing member 82 may not be made of a heat insulating material.

In addition, in the above-mentioned embodiment, a case where a plurality of gasket members 81 are arranged in each inter-board space 75 is described, but the present invention is not limited thereto. One gasket member 81 may be arranged in each inter-board space 75. The gasket member 81 may be arranged in only a part of the inter-board spaces 75 among the plurality of inter-board spaces 75. The gasket member 81 may not be arranged in any inter-board space 75.

Furthermore, in the above-mentioned embodiment, the gasket members 81 respectively arranged in the two adjacent inter-board spaces 75 are arranged at different positions in the extending direction. However, the gasket members 81 respectively arranged in the two adjacent inter-board spaces 75 may also be arranged at the same position in the extending direction.

Furthermore, in the above-mentioned embodiment, the bent portions 71c, 72c, 73c, 74c that seal one of the inter-plate spaces 75 (75a, 75c) and the gasket member 81 disposed in the other inter-plate space 75 (75b, 75d) are described as being disposed at different positions in the vertical direction in the two adjacent inter-plate spaces 75. However, the bent portions 71c, 72c, 73c, 74c and the gasket member 81 disposed in the inter-plate spaces 75b, 75d may be disposed at the same position in the vertical direction.

Furthermore, in the above-mentioned embodiment, the lower side ends of the inter-plate spaces 75a and 75c are sealed by the bent portions 71c and 72c, the bent portions 73c and 74c, and the lower side ends of the inter-plate spaces 75b and 75d are sealed by the second sealing member 83 formed of a heat insulating material, but the present invention is not limited thereto. That is, for example, the lower side ends of all the inter-plate spaces 75 may be sealed by the second sealing member 83 without forming a bent portion. In addition, for example, the lower side ends of the inter-plate spaces 75, 75a, 75b, 75c and 75d may be sealed by the second sealing member 83 without forming a bent portion. Furthermore, the second sealing member 83 may also be formed of a heat insulating material.

In addition, in the above-mentioned embodiment, the case where one second sealing member 83 seals the lower side end of the inter-plate spaces 75b and 75d and covers the surface of the bent portions 71c and 73c that seal the inter-plate spaces 75a and 75c is described, but the present invention is not limited to this. That is, for example, the member that seals the lower side end of the inter-plate spaces 75b and 75d and the member that covers the surface of the bent portions 71c and 73c that seal the inter-plate spaces 75a and 75c may be different members. Furthermore, only the surface of the bent portion 71c of the inter-plate space 75a that is located closest to the heating unit 50 among the inter-plate spaces sealed by the bent portions (i.e., the inter-plate spaces 75a and 75c) may be covered by the second sealing member 83 made of a heat insulating material. The surfaces of both the bent portions 71c and 73c of the sealing inter-plate spaces 75a and 75c may not be covered by the second sealing member 83 made of a heat insulating material.

Furthermore, in the above embodiment, the vertical positions of the bent portions 71c, 72c of the sealing inter-plate space 75a and the bent portions 73c, 74c of the sealing inter-plate space 75c are different from each other. However, the vertical positions of the bent portions 71c, 72c and the bent portions 73c, 74c may be the same.

Furthermore, in the above embodiment, the thickness Ta1 and Ta2 of the second sealing member 83 covering the bent portion 71c in the vertical direction are larger than the thickness Tb1 and Tb2 of the second sealing member 83 covering the bent portion 73c in the vertical direction. However, the thickness Ta1 and Ta2 may be smaller than the thickness Tb1 and Tb2.

Furthermore, in the above-mentioned embodiment, the plate members 72 and 73 are fixed to each other at the upper walls 72a and 73a through the connecting member 84, and the plate member 74 and the main body 61 of the box 60 are fixed to each other at the upper walls 74a and 61a through the connecting member 85. The fixing portions of the plate members 72 and 73 (the portions connected by the connecting member 84) and the fixing portions of the plate member 74 and the main body 61 of the box 60 (the portions connected by the connecting member 85) are not limited to the upper end portions of the respective members, and may be the lower end portions, for example.

Furthermore, in the above-described embodiment, the case where the heat insulating member 80 is disposed between the plate member 71 and the heating unit 50 is described, but the heat insulating member 80 may not be disposed.

In addition, in the above-mentioned embodiment, the four plate members 71, 72, 73, 74 are arranged between the main body 61 of the box 60 and the heating unit 50, and the four inter-plate spaces 75 are formed between the plate members 71, 72, 73, 74 and the main body 61, but the present invention is not limited thereto. It is sufficient to form at least two inter-plate spaces 75. In other words, it is sufficient to form at least three members equivalent to the plate members of the present invention. It is also possible to form five or more inter-plate spaces 75.

Furthermore, in the above-mentioned embodiment, the case where the four plate members 71, 72, 73, 74 and the upper wall 61a and the two side walls 61b of the main body 61 are not arranged in the area opposite to the lower end of the wire running groove 56 is described, but the present invention is not limited to this. That is, a plate member constituting the inter-plate space may be arranged in the area opposite to the lower end of the wire running groove 56. In this case, the plate member arranged in the area opposite to the lower end of the wire running groove 56 is configured to be movable from the area or to be removed relative to the device.

Furthermore, in the above-described embodiment, each plate member 71, 72, 73, 74 is described as a groove-shaped member extending in the extending direction and opening downward, but the present invention is not limited thereto. That is, for example, the plate member may be a flat plate that is not bent.

In addition, in the above-mentioned embodiment, the case where the opposing surfaces of the two plate members 71 and 72 constituting the inter-plate space 75a located closest to the heating unit 50 among the four inter-plate spaces 75 is mirror-polished is described, but the present invention is not limited thereto. It is preferred that among the opposing surfaces of the two plate members 71 and 72, at least the surface defining the inter-plate space 75a in the plate member 71 close to the heating unit 50 is mirror-polished. The surfaces of all the plate members 71 to 74 and the main body 61 may also be mirror-polished. The surfaces of the plate members 71 to 74 and the main body 61 may not be mirror-polished.

Furthermore, in the above-mentioned embodiment, the case where the entire wire running groove 56 is formed in the heating part 50 is described, but it is not limited to this. That is, for example, the heating part 50 may also define a part of the wire running groove 56. That is, the heating part 50 may also define only the bottom of the wire running groove 56. In addition, for example, the heating part 50 may also define only the side of the wire running groove 56.

In the above embodiment, the wire Y is described as receiving heat from the heating block 52 through the wire surface 55 by contacting the wire surface 55 in the heating unit 50, but the present invention is not limited thereto. The heating unit 50 may be a non-contact method for heating the wire Y using heated air.

Furthermore, in the above embodiment, the heating unit 50 is described as having the heat source 51 and the heating block 52 heated by the heat source 51, but the present invention is not limited thereto. For example, the heating unit may be configured to circulate a heat medium such as Dowtherm inside a hollow member.

Furthermore, in the above embodiment, the case where the yarn heating device of the present invention is applied to the false twisting machine 1 that performs false twisting on the yarn Y has been described, but the invention is not limited to this. The yarn heating device of the present invention is not limited to false twist processing, and can be applied to processing machines that perform various processing such as doubling processing on yarns made of synthetic fibers.

1: False twist processing machine 2: Wire supply section 3: Processing section 4: Winding section 5: Creel 8: Main body 9: Winding table 10: Support frame 11: First wire supply roller 12: Anti-twist guide wire 13: First heating device (wire heating device) 14: Cooling device 15: False twisting device 16: Second wire supply roller 17: Interlacing device 18: Third wire supply roller 19: Second heating device (wire heating device ) 20: Fourth wire supply roller 21: Winding device 31: Fulcrum yarn guide 32: Traverse device 33: Cradle 34: Transverse wire guide 35: Contact roller 50: Heating part 51: Heat source 56: Wire running groove (wire running passage) 59: Bolt 60: Box 61: Main body 62: Door 68: Opening 78: Clamp 80: Partition Heat component 81: Gasket component 82: First sealing component (sealing component) 83: Second sealing component (sealing component, covering component) 91: Insulation block 92: Insulation block 93: Insulation block 150: Heating part 151: Tube 153: Tube 154: Heat medium 161: Main body (plate part) 152, 152a, 152b: Tube 171,172,173,174: plate member 175,175a,175b,175c,175d: space between plates 182,183: sealing member 52,52a,52b: heating block 53,53a,53b: recess 54,54a,54b: wire connection 55,55a: wire connection Surface 61a: upper wall (plate component) 61b, 61c: side wall (plate component) 61d: lower wall 61d1: first part 61d2: second part 62a: axis 71, 72, 73, 74: plate components 71a, 72a, 73a, 74a: Upper wall 71b, 72b, 73b, 74b: side wall 71c, 72c: bend (first bend) 73c, 74c: bend (second bend) 75, 75a, 75b, 75c, 75d: space between panels 84,85: Connecting parts Bw: Winding bobbin C: Center line P1: Virtual plane P2: Virtual plane Ps: Supply package Pw: Winding package Y, Ya, Yb: Thread

[Fig. 1] is a side view of a false twisting machine according to an embodiment of the present invention. [Fig. 2] is a schematic diagram showing the false twisting machine unfolded along the path of the yarn. [Fig. 3] is a diagram showing the first heating device. [Fig. 4] is a cross-sectional view taken along line IV-IV of the first heating device shown in Fig. 3. [Fig. (a) of [Fig. 5] is an enlarged view of the heating unit shown in Fig. 4, and (b) is a cross-sectional view along line b-b of the heating unit shown in (a). [Fig. 6] is a cross-sectional view taken along line VI-VI of the first heating device shown in Fig. 4. [Fig. [Fig. 7] is a cross-sectional view taken along line VII-VII of the first heating device shown in Fig. 4. [Fig. [Fig. 8] is a diagram for explaining dimensions, and is a cross-sectional view taken along line IV-IV of the first heating device shown in Fig. 3. [Fig. [Figure 9] is a diagram for explaining a variation of the implementation method, and is a cross-sectional view cut along a plane perpendicular to the vertical direction of the second heating device. [Figure 10] is a cross-sectional view taken along the X-X line of Figure 9 (a) of [Figure 11] is an enlarged view of the heating portion shown in Figure 9, and (b) is a cross-sectional view along the b-b line of (a).

13: First heating device (wire heating device)

50: Heating section

59: Bolts

60: Box

61: Main body

61a: Upper wall (plate component)

61b: Side wall (plate component)

61d: Lower wall

61d1:Part 1

61d2: Part 2

62: Door

62a: Axis

68: Open mouth

71,72,73,74: Plate parts

71a,72a,73a,74a: Upper wall

71b,72b,73b,74b: Side wall

71c, 72c: bending part (first bending part)

71d: protrusion

73c, 74c: Bend (second bend)

75,75a,75b,75c,75d: Space between boards

78: Clamp

80: Thermal insulation components

81: Gasket parts

83: Second sealing component (sealing component, covering component)

84,85: Connecting parts

91: Insulation block

92: Insulation block

93: Insulation block

P1: imaginary plane

P2: imaginary plane

Claims (24)

A wire heating device forms a wire running path for the wire to run, characterized in that it comprises: a heating portion extending in the direction in which the wire running path extends, i.e., a predetermined direction, for heating the wire running in the wire running path; a plurality of plate members arranged opposite to each other and separately, and arranged in a direction away from the heating portion in an imaginary plane orthogonal to the predetermined direction and intersecting the heating portion; and a sealing member sealing at least a portion of the end of the inter-plate space between the two opposing plate members; wherein, in the imaginary plane, a plurality of air layers formed in the inter-plate space are arranged in a direction away from the heating portion. A wire heating device as described in claim 1, wherein the space between the plates is sealed. A wire heating device as described in claim 1 or 2, wherein each of the plate members extends along the specified direction; The sealing member includes a first sealing member, which is made of a heat insulating material and seals both ends of the space between the plates in the specified direction. A wire heating device as described in claim 3, wherein the density of the first sealing component is greater than 80 kg/ ^m3 . The wire heating device as described in any one of claims 1 to 4 also has a gasket component, which is arranged in the space between the aforementioned plates. A wire heating device as described in claim 5, wherein the gasket components respectively arranged in the spaces between two adjacent plates are arranged at different positions in the prescribed direction. A wire heating device as described in claim 5 or 6, wherein the end of at least one of the aforementioned inter-plate spaces on one side of the orthogonal direction orthogonal to the aforementioned prescribed direction is sealed by a bent portion, and the bent portion is formed by bending the end of the aforementioned one side of the aforementioned orthogonal direction of the two aforementioned plate members constituting the inter-plate space; In two adjacent aforementioned inter-plate spaces, the aforementioned bent portion sealing one of the aforementioned inter-plate spaces and the aforementioned gasket member arranged in the other aforementioned inter-plate space are arranged at different positions in the aforementioned orthogonal direction. A wire heating device as described in claim 7, wherein the bent portion functions as a gasket for ensuring a gap between the two plate components. A wire heating device as described in claim 7 or 8, wherein when three adjacent plate members among the plurality of plate members are set as a first plate member, a second plate member and a third plate member; The end of the aforementioned one side of the aforementioned inter-plate space between the aforementioned first plate member and the aforementioned second plate member in the aforementioned orthogonal direction is sealed by the aforementioned bent portion formed by bending the ends of the aforementioned one side of the aforementioned orthogonal direction of the aforementioned first plate member and the aforementioned second plate member; The aforementioned sealing member includes a second sealing member, which is made of a heat insulating material and seals the end of the aforementioned one side of the aforementioned inter-plate space between the aforementioned second plate member and the aforementioned third plate member in the aforementioned orthogonal direction. A wire heating device as described in claim 9, wherein, when the two inter-plate spaces located closest to the heating unit and the inter-plate space located farthest from the heating unit among the three adjacent inter-plate spaces are sealed by the bent portion; The bent portions that respectively seal the two inter-plate spaces are located at different positions in the orthogonal direction. The wire heating device as described in claim 9 or 10 also has a covering part, which is made of an insulating material and covers the surface of the aforementioned inter-plate space sealed by the aforementioned bent portion, which is opposite to the side of the aforementioned inter-plate space in the aforementioned bent portion that seals at least the aforementioned inter-plate space closest to the aforementioned heating portion. A wire heating device as described in claim 11, wherein the second sealing member also serves as the covering member. A wire heating device as described in claim 12, wherein the second sealing component seals the end of one of the sides in the orthogonal direction of all the inter-plate spaces in the inter-plate spaces that are not sealed by the bending portion, and covers the surface of the bending portion in all the inter-plate spaces in the inter-plate spaces that are sealed by the bending portion that is opposite to the side of the inter-plate spaces. A wire heating device as described in claim 12 or 13, wherein each of the plate members covers the entire heating portion in the orthogonal direction; The first bent portion, which is located closest to the heating portion in the inter-plate space sealed by the bent portion, is located closer to the heating portion in the orthogonal direction than the second bent portion, which is located to seal the other inter-plate space; The thickness of the portion of the second sealing member covering the first bent portion in the orthogonal direction is greater than the thickness of the portion covering the second bent portion in the orthogonal direction. The wire heating device as described in any one of claims 9 to 14 further comprises a connecting member that connects the aforementioned plate members to each other; wherein the aforementioned first plate member and the aforementioned second plate member are fixed to each other at the aforementioned bending portion; the aforementioned second plate member and the aforementioned third plate member are fixed to each other at the end of the other side opposite to the aforementioned one side in the aforementioned orthogonal direction by the aforementioned connecting member. A wire heating device as described in any one of claims 1 to 8, wherein the sealing component includes a second sealing component, which is made of an insulating material and seals the end of one side of the orthogonal direction of the space between the plates that is orthogonal to the specified direction. A wire heating device as described in any one of claims 9 to 16, wherein the density of the second sealing component is greater than 80 kg/ ^m3 . A wire heating device as described in any one of claims 1 to 17, wherein the thickness of the air layer is greater than 5 mm and less than 15 mm. The wire heating device as described in any one of claims 1 to 18 further comprises a heat insulating component, which is arranged between the plate component closest to the heating part and the heating part among the plurality of plate components. A wire heating device as described in any one of claims 1 to 19, wherein the wire running passage is a wire running groove, at least a portion of which is defined by the heating portion and opens in an opening direction orthogonal to the specified direction. A wire heating device as described in claim 20, wherein the plurality of plate components are not arranged in an area of the wire running groove that is opposite to the open end in the open direction. A wire heating device as described in claim 21, wherein each of the plate members extends along the specified direction and is a groove-shaped member that is open in the opening direction; The plurality of plate members are arranged in a nested manner, and the innermost plate member is arranged to surround the heating portion. A wire heating device as described in any one of claims 1 to 22, wherein among the opposing surfaces of two aforementioned plate members constituting the aforementioned inter-plate spaces located closest to the aforementioned heating part in the aforementioned multiple inter-plate spaces, at least the surface of the aforementioned plate member close to the aforementioned heating part is mirror polished. A false twist processing machine for performing false twist processing on silk threads, characterized in that: it is provided with the thread heating device according to any one of claims 1 to 23.

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