JP2002220755A - Heating device of textile machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the radiation of heat from a heating member and efficiently use the heat from a heat generator, thereby reducing consumed electric power. SOLUTION: The first reflection material 41 is disposed on the outsides of heater blocks 11, 21 having a heat-insulating material 31 on heat-radiating surfaces and used for heating a yarn Y so that the first reflection material 41 substantially covers the heater blocks 11, 21 and the heat-insulating material 31, and the second reflection material 42 is disposed so as to substantially cover the first reflection material at a space from the first reflection material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a heating device for a textile machine. More specifically, the present invention relates to a first heater, a false twisting device (a false twisting device (including a draw false twisting device)) for fixing a twist given to a yarn by a twisting device and retrospective along the yarn. (Including a draw false twisting machine) to adjust the crimpability, such as the crimp rate and torque, of the false twisted yarn sent out from the twisting device in the untwisted state after heat-setting the twist with the first heater, The second heater for fixing the form of, for example, used as a drawing heater in a drawing twisting machine, further used in the spinning process of synthetic fiber yarn such as polyester, polyamide, etc., especially polyester, polyamide etc. The present invention relates to a heating device and the like used for heating a synthetic fiber yarn.

[0002]

2. Description of the Related Art In such a heating apparatus for a textile machine, the temperature has recently been raised, and a high-temperature heater for heating a material to a high temperature of, for example, 400 ° C. or more has been used.

[0003] In a high-temperature heater, a heating block is formed by incorporating a heating element such as a sheathed heater in a heater block made of a copper-based alloy, and a heat insulating material or a heat insulating material is placed around the heating element, so that it can be minimized. It has been practiced to prevent heat from escaping. That is, in the conventional heating device,
The heater block is made of a copper alloy with good thermal conductivity such as brass, and a heating element such as a sheathed heater is inserted into a hole formed in the heater block, or a heating element such as a sheathed heater is sandwiched by the heater block. A heating element is formed, the front side of the heater block on the working surface side is opened for threading, a thread running path is formed there, and a heat insulating material is placed on the front side of the heater block. Heat supplied from the heater and heating the heater block is prevented from leaking out of the heating device from the work surface side as much as possible. Further, a heat insulating material or a heat insulating material is placed around the heater block to prevent heat from escaping from the outer periphery of the heater block. (See, for example, Japanese Patent Application Laid-Open No. 3-234834.
JP, JP-A-6-49724, JP-A-8-29
No. 1430)

[0004]

As described above, in the conventional apparatus, the heat of the heating element heated by the heating element is prevented from escaping to the outside by using a heat insulating material or a heat insulating material. . However, there is a limit to preventing heat from radiating from the heating element using only heat insulating material or heat insulating material, and in order to compensate for the heat that has escaped in this way, it is necessary to heat by consuming extra power from the heating element. There is. As a result, the power consumption of the heating device and thus of the textile machine has increased.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to minimize the dissipation of heat from a heating element associated with a conventional high-temperature heater as described above and to reduce power consumption by efficiently using the heat generated from the heating element. It is an object.

[0006]

According to the present invention, a reflecting material is provided so as to substantially surround a heating element for heating a yarn, as described in the first aspect. This is achieved by a heating device of a textile machine. In addition,
Since the work surface side of the heating device is usually open in order to thread the yarn to be processed through the heating device, the above-mentioned reflecting material almost surrounds the heating element, so that only the form that covers the open portion is covered. However, this open part includes a form in which the part is left open and not covered.

[0007] More specifically, in the present invention, in a heating apparatus for a textile machine comprising a heating element for heating a yarn and a heat insulating material provided outside the heating element, the heating element is provided outside the heating element. A first reflecting material is provided so as to substantially wrap the body, and a second reflecting material is provided so as to wrap the heat insulating material and the outside of the first reflecting material at an interval from the first reflecting material. As a heating device for a textile machine, the heat radiated from the heating element is reflected by the first reflecting plate to the heating element to enhance the heat generation efficiency of the heating element, and the first and second heating elements serve as a heat insulating material. By wrapping the inside and outside, heat generated from the heating element, heat reaching the heat insulating material through the first reflection plate is prevented as far as possible from the outside of the heating device, and heat generated from the heating element is prevented. It is preferable to use it efficiently

In this case, the first reflecting material may be provided so as to closely wrap the heating element in close contact therewith, or may be provided so as to substantially wrap the heating element with an interval from the heating element. In particular, in the latter case, one end of the first reflecting member may be connected to the second reflecting member to form a housing to further improve the heat insulating property of the heat insulating material.

As the reflecting material in the present invention, the outer surface of a metal plate such as aluminum or stainless steel may be mirror-finished, or the surface of the plate may be coated with chrome plating or the like. It may be any as long as it has an effect of reflecting light and confining heat in a space facing the reflection surface. In particular, it is preferable that both the front and back surfaces of the first reflecting material are suitable for the heating element and the heat insulating material, respectively, and that both the front and back surfaces are reflecting surfaces.

[0010] The heating device according to the present invention can be used as a first heater disposed upstream of the combustion device of a false twisting machine, whereby the twist applied by the twisting device and retrospective along the yarn can be formed. It is possible to obtain a heating device that is extremely efficient for heat setting.

Further, the heating device according to the present invention can be used as a second heater disposed downstream of a twisting device of a false twisting machine (including a stretch false twisting machine), and is sent out from the burning device. It is possible to adjust the crimpability such as the crimp rate and torque of the false twisted yarn, and to fix the form of the false twisted yarn.

Further, the heating device according to the present invention is suitable for a high-temperature heater, particularly a high-temperature heater heated to a high temperature of 400 ° C. or more, and is provided with a yarn guide along a yarn path as appropriate. The yarn may be heated in a non-contact state.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings showing embodiments of the present invention. FIG. 1 is a schematic view of a stretch false twisting apparatus equipped with a heating device according to the present invention, and FIG.
FIG. 2 is a sectional view of a heating device according to the present invention used as a first heater in the embodiment of FIG. 1, (a) is a longitudinal sectional view,
(B) is a cross-sectional view, and (c) and (d) are cross-sectional views of other examples, respectively. 3 is a cross-sectional view of a heating device according to the present invention used as a second heater in the embodiment of FIG. 1, (a) is a longitudinal sectional view, (b) is a transverse sectional view, and (c) and (c) of FIG. (D) is a cross-sectional view of each of the other embodiments.

FIG. 1 is a cross-sectional view of a draw false twist apparatus in which a heat treatment apparatus for a synthetic fiber yarn according to the present invention is incorporated as a first heater and a second heater. In FIG.
The yarn Y is drawn out by a first feed roller 2 composed of a pair of rollers 2a and 2b and stretched at a predetermined magnification between the first feed roller 2 and a second feed roller 6, and at the same time, a friction belt, a friction disk, The yarn Y is twisted by a known twisting device 5 such as a twist spindle. In addition, instead of performing false twisting at the same time as stretching, a device that performs false twisting after stretching may be used.

The twist given to the yarn Y by the twisting device 5 travels back along the yarn Y toward the first feed roller 2. The twist that has been traced back along the yarn Y is heat-fixed by the heat treatment device (first heater) 3 according to one embodiment of the present invention, and furthermore, in the stabilizing tracks 4 a and 4 b provided downstream of the heat treatment device 3. Cooled.

In this way, a false twist is applied to the yarn Y upstream of the twisting device 5 between the first feed roller 2 and the second feed roller 6, and after exiting the twisting device 5, the yarn Y Y is untwisted. A heat treatment device (second heater) 3 ′ according to one embodiment of the present invention is provided downstream of the combusting device 5. To adjust the crimpability of the yarn or fix the form of the false twisted yarn. The yarn Y sent from the heat treatment device (second heater) 3 ′ is sent to the winding device 7 via the second feed roller 6.

The winding device 7 includes a traverse device 8 for traversing the yarn from side to side, a bobbin holder 10 for mounting a bobbin for winding the yarn Y, and a friction roller for pressing and rotating the bobbin or the yarn wound on the bobbin. It consists of nine.

Heat treatment apparatus (first heater) 3 according to the present invention
The embodiment will be described in detail with reference to FIG. The heater blocks 11 and 21 are made of three plate members made of a copper alloy having good heat conductivity such as brass, and a heating element (in this embodiment, a sheathed heater 1 in the present embodiment) is provided between the plate members.
2) constitutes a heating body. The heating element has a total length of 0.8 to 1.2 m, and as shown in FIG. 2A, the heat treatment apparatus (first heater) 3 of the present embodiment includes a heater block 11 and a sheathed heater 12 which serve as the heating apparatus. It is divided into two at a length ratio of 1: 3 to 1: 1.5 from the upstream side to the downstream side. In addition, the heat treatment apparatus according to the present invention is not limited to the one divided into two in the length direction as in the embodiment, but may be divided into three or more, or one without division. Is also good. As the heating element, a heater other than the sheathed heater may be used. For example, a plate heater may be used.

In FIG. 2A, the heater block comprises heater blocks 11 and 21 which are divided into two in the length direction. As shown in FIG. 2B, in this embodiment, the heater blocks 11 and 21 are used. Are made of three plate members, respectively, and sheathed heaters 12 and 22 for heating the heater blocks 11 and 21 are respectively provided in the heater blocks 1 and 2.
It is sandwiched on the base side (left side in FIG. 2) of the plate materials 1 and 21. FIG. 2B shows a cross section on the upstream side of the heating device. In FIG. 2B, a thread running groove is formed between adjacent plate members of the heater block 11. Although not shown in the figure, a thread running groove is also formed between the plate members adjacent to the heater block 21. In FIG. 2A, reference numerals 13 and 23 denote temperature sensors provided in the heater blocks 11 and 21, respectively.

In the above embodiment, the heater block is composed of a plurality of plate members, and the thread running grooves are formed between the plate members adjacent to the heater block 11. However, the heater block is kept at a small interval from the heater block. A member may be provided to form a thread running groove between the heater block and the heat retaining member.
Alternatively, a hole extending in the yarn path direction may be formed in the integral heater block, and a heating element such as a sheathed heater may be mounted in the hole.

The upstream heating element (seed heater) 12 divided into two parts has a temperature exceeding 370 ° C., more practically 40 ° C.
It can be heated to a temperature exceeding 0 ° C., and the downstream side heating element (seed heater) 22 is at 250 to 320 ° C. or 37 ° C.
It can be heated to a temperature above 0 ° C., more practically to a temperature above 400 ° C., and both the sheath heaters 12 and 22 may be heated simultaneously, or only the sheath heater 12 is mainly heated, or Only the sheath heater 22 may be mainly heated. These conditions are set by a controller (not shown).

The work surface side heat insulating material 3 is provided outside the work surface side (right side in FIG. 2) of each plate material of the heater blocks 11 and 21.
1 is provided, and a thread running groove connected to the above-described thread running groove is formed between the work surface side heat insulating materials 31. The heater blocks 11 and 21 heated by the sheathed heaters 12 and 22 are kept warm by the work surface side heat insulation material 31. Further, outside the heater blocks 11 and 21 and the work surface side heat insulation material 31, the above-described yarn is provided. Only the outside of the running groove is opened, and a heat insulating cover 32 having a substantially rectangular cross section is provided.

As shown in FIG. 2 (b), the first reflector 41 having a U-shaped cross section and having the outside of the thread running groove open is formed by:
The first reflection member 41 is supported by the heat insulation cover 32 by the reflection member support member 34, and the first reflection member 41 is spaced apart from the heater blocks 11, 21 and the work surface side heat insulation member 31 to keep the heater blocks 11, 21 and the work surface side heat insulation member. The outside of the material 31 is almost wrapped. The first reflecting material 41 has reflecting surfaces on both front and back surfaces.

As the reflector 41 in the present invention, the outer surface of a metal plate such as aluminum or stainless steel may be mirror-finished, or the surface of the plate may be coated with chrome plating or the like. Any material can be used as long as it has the function of reflecting heat and confining heat in the space facing the reflecting surface.

The heater blocks 11 and 21 and the heat insulating cover 3
The space 2 is filled with a heat insulating material 33 made of a glass wool heat insulating material, a rock wool heat insulating material, a ceramic fiber, or the like, and having a layer shape, a board shape, or a cotton shape.

As described above, the heat radiated from the outer peripheral surfaces of the heater blocks 11 and 21 heated by the sheathed heaters 12 and 22 is reflected by the first reflector 41 and used for heating the heater. it can. Thereby, the heating of the heater blocks 11 and 21 is assisted, and it is possible to suppress unnecessary power for heat generation of the heating elements (the sheathed heaters 12 and 22), thereby reducing power consumption.

As shown in FIG. 2A, in this embodiment, yarn guides 14 and 24 are protruded at intervals in the running direction of the yarn Y. The yarn guides 14 are provided at regular intervals at a fine pitch in the length direction of the upstream heater block 11 divided into two. In the downstream heater block 21, thread guides 24 are provided at regular intervals at a coarse pitch in the length direction thereof.
4, as shown in FIG.
a, 24a (only 14a is shown) are formed, and the line connecting the bottoms of the recesses 14a, 24a (the portion where the yarn runs) in the length direction is, as shown in FIG. It is preferable to eliminate the vibration (ballooning) of the yarn. The guides 14, 24
Is made of a good material made of heat conduction, and the surface may be coated with ceramic.

In the case of polyester, the yarn temperature at the heater outlet is basically 190 to 230 ° C.
(For example, 220 ° C.). The yarn temperature is determined by the heater length, yarn speed, yarn denier, and heater set temperature. For example, 150 denier, 10
The case of POY polyester of 0 denier, 75 denier, 50 denier, and 30 denier (processed yarn denier) will be described.

In the heater shown in the embodiment, the upstream heater block 11 is 0.26 m, the downstream heater block 21 is 0.64 m, and has a total length of 0.90 m. (1) In the case of 150 denier In the case where the entire heater (heater length is 0.90 m) divided into two parts is heated in the same manner, a heater setting for setting the yarn temperature to 220 ° C. in the yarn speed range of 800 m / min to 1500 m / min The temperature will be between 456C and 582C. Therefore, by raising the temperature of both the upstream and downstream heaters to more than 370 ° C., even if the yarn is fused to the yarn guide at the time of yarn breakage, the yarn guide temperature is high (400 ° C. or higher). Self-cleaning can be achieved in a short time, and the re-threading can be performed in a short time. As described above, when the yarn guide temperature exceeds 370 ° C (preferably 390 ° C),
In some cases, the downstream heater is set to 400 ° C. because the thread guide deposits disappear in a relatively short time and re-threading is possible.
The temperature may be set to be less than 370 ° C.

(2) In the case of 75 denier If the heater length is 0.90 m (both divided and heated), the yarn temperature is set to 220 ° C. at a yarn speed of 800 m / min to 1500 m / min. Heater setting temperature is 355 ℃
４５455 ° C. At a yarn speed of approximately 1050 m / min or less, the guide temperature (= heater set temperature) becomes less than 400 ° C.,
The fused yarn continues to adhere to the yarn guide in a molten state for a long time.

Therefore, a two-stage heater (Example 0.26 m +
0.64 m), the upstream heater having a length of 0.26 m was heated to 400 ° C. or more, and the downstream heater having a length of 0.64 m was heated to 2 ° C.
If the temperature is raised to a temperature of 50 to 320 ° C., the upstream heater set temperature in the yarn speed range is 410 to 500 ° C.
It will be self-cleaning and again
The threading success rate when threading is performed is extremely high (almost successful). (3) When processing a thinner yarn, the following usage is possible because the heater is divided.

The temperature of the upstream heater on the 0.26 m side is set to 4
The temperature is set to 00 ° C. or higher, and the downstream heater temperature is set to a relatively low temperature. In some cases, the upstream heater is turned off and the temperature of the heater outlet yarn is set to a predetermined temperature of 190 to 230 ° C. (for example, 220 ° C.) by setting the heater temperature of the 0.64 m side to a temperature exceeding 370 ° C. Can also.

In this case, the temperatures of the heaters on both the upstream side and the downstream side are set so as not to be in the range of 340 to 370 ° C. More preferably, the temperature of both the upstream and downstream heaters is controlled so as not to be in the range of 320 to 390 ° C. If the temperature is higher than this range, even if the yarn is broken, even if the yarn is re-threaded, even if the temperature is less than 400 ° C., the adhered matter will be relatively short, and re-threading can be performed. As described above, since the fused material is vaporized within an extremely short time, no yarn breakage occurs. On the other hand, when the temperature is lower than this range, the heat capacity of the attached matter is small and the yarn is taken off by the yarn without breaking the yarn, so that there is substantially no need to worry about yarn breakage.

In this embodiment, the heater block and the heater block are arranged from upstream to downstream of the heating device:
The upstream heater block is divided into two parts at a length ratio of 3 to 1: 1.5, and the upstream heater block can be heated to a temperature exceeding 370 ° C. and the downstream heater block is 250 parts.
It can be heated to a temperature exceeding 320 ° C or 370 ° C. Further, in the present invention, the upstream heater block is provided with thread guides at a dense pitch of 15 to 30 mm in the length direction thereof. With such a configuration, abnormal dyeing in the vicinity of the knot portion can be reduced, and a good processed yarn free of spotting can be obtained.

Further, in the present invention, the upstream side heater block is provided with thread guides at a fine pitch in the length direction thereof. By reducing the pitch of the yarn guide in this manner, an effect of preventing abnormal dyeing and spots can be obtained.

The pitches of the yarn guides installed in the upstream heater block and the downstream heater block may be unequal. By installing the yarn guide in this manner, ballooning can be prevented from occurring with the yarn guide as a node, and the occurrence of spots and the abnormal dyeing near the knot portion can be prevented.

Another embodiment will be described with reference to FIG. In this embodiment, inside the heat retaining cover 32,
Only the outside of the yarn running groove is opened, and the second reflector 42 having a substantially rectangular cross section is kept warm by the reflector support member 34 so as to substantially surround the first reflector 41 with an interval from the first reflector 41. It is provided on the cover 32. That is, the first reflecting material 41 and the second reflecting material 42 are in a state where their respective reflecting surfaces face each other, and the first reflecting material 41 has one end shown at the right end in FIG. The first reflector 41 and the second reflector 42 form a housing connected to the reflector 42. The first reflector 41 has a reflective surface on both front and back surfaces, whereas the second reflector 42 has a reflective surface only on the inner surface. Other structures are shown in FIG.
This is the same as the embodiment described above with reference to FIG.

As described above, the heat radiated from the outer peripheral surfaces of the heater blocks 11 and 21 heated by the sheathed heaters 12 and 22 is reflected by the first reflector 41 and used for heating the heater. it can. Further, the first reflector 41 and the second reflector 4 pass through the first reflector 41.
The heat that has entered the inside of the housing formed by 2 is reflected by the first reflector 41 and the second reflector 42, and the heat is confined inside the housing. It can be maintained at a high temperature and used for heating the inside of the housing.
As a result, the heating of the heater blocks 11 and 21 is assisted, and extra power for heat generation of the heating elements (the sheathed heaters 12 and 22) can be suppressed, and power consumption can be reduced.

Still another embodiment will be described with reference to FIG. In this embodiment, the heater block 11,
A first reflector 41 is provided in close contact with the outer peripheral surface of 21, and only the outside of the thread running groove is opened inside the heat retaining cover 32, and a second reflector 42 having a substantially rectangular cross section is provided.
The heat insulating cover 32 is provided with a reflector support member 34 so as to substantially wrap the first reflector 41 with an interval from the first reflector 41. Note that the first reflector 41 and the second reflector 42 are not connected to each other, so that heat of the first reflector 41 is not transmitted to the second reflector 42 by conduction. Other structures are the same as those of the embodiment described above with reference to FIGS. 2B and 2C.

Next, the details of an embodiment of the heat treatment apparatus (second heater) 3 'according to the present invention installed downstream of the combustor 5 will be described in detail with reference to FIG. Heater block 1
1 'is made of a copper alloy having good thermal conductivity such as brass, and has a heating element (a sheathed heater in this embodiment).
Heated by 2 '. In addition, as a heating body, something other than a sheathed heater may be used, and for example, a plate heater may be used.

In the illustrated embodiment, as shown in FIG. 3 (b), the heater block 11 'is made of three plate members, and a sheath heater 12' for heating these heater blocks 11 'is provided in the heater block 11'. The base side of the plate (Fig. 3
At the left). Further, thread running grooves are formed between adjacent plate members of the heater block 11 '. 13 'is a temperature sensor provided in the heater block 11'.

The heating element (seed heater) 12 'is heated to an appropriate temperature, for example, a temperature exceeding 370 ° C., more practically 40 ° C.
It can be heated to a temperature exceeding 0 ° C or 250 to 320 ° C. The heating conditions are set by a controller (not shown) in consideration of the crimp characteristics of the obtained false twisted yarn. Since the heat treatment device (second heater) 3 'heats the untwisted false twisted yarn, the yarn Y is heated by the first heater 3'.
Since a large balloon as in FIG.
The thread guide may be omitted as shown in (b), but a thread guide may be provided as needed.

A heat insulating material 31 'is provided on the outside of the work surface side (right side in FIG. 3) of each plate material of the heater block 11'. A continuous thread running groove is formed. Sheath heater 12 '
The heater block 11 'heated by the heater is a heat insulating material 31'.
, And a heat insulating cover 32 'is provided outside the heat insulating material 31'.

As shown in FIG. 3B, the first reflecting material 4
1 'is supported on the heat insulating cover 32' by a reflector support member 34 ', and the first reflector 41' is
1 'and the work surface side heat insulating material 31' are substantially wrapped.

As the reflecting material 41 'in the present invention, the outer surface of a metal plate such as aluminum or stainless steel may be mirror-finished, or the surface of the plate may be coated with chrome plating or the like. May be any as long as it has the function of reflecting heat and confining heat in the space facing the reflecting surface.

A space between the heater blocks 11 'and 21' and the heat insulating cover 32 'is made of glass wool heat insulating material, rock wool heat insulating material, ceramic fiber, or the like.
A board-like or cotton-like heat insulating material 33 'is filled.

As described above, the heat radiated from the outer peripheral surface of the heater block 11 'heated by the sheath heater 12' is reflected by the first reflector 41 'and can be used for heating the heating element. . Thereby, the heating of the heater blocks 11 and 21 is assisted, and it is possible to suppress unnecessary power for heat generation of the heating elements (the sheathed heaters 12 and 22), thereby reducing power consumption.

Another embodiment will be described with reference to FIG. In this embodiment, only the outside of the thread running groove is opened inside the heat insulating cover 32 ', and the second reflector 42' having a substantially rectangular cross section is spaced apart from the first reflector 41 'to form the first reflector 42'. Reflector support material 3 so as to substantially surround reflector 41 '
4 '. That is, the first reflecting member 41 'and the second reflecting member 42' are in a state where their respective reflecting surfaces face each other.
In (c), one end shown at the right end is the second reflecting material 4.
2 ', the first reflector 41' and the second
Of the reflector 42 '. The first reflecting material 41 ′ has reflecting surfaces on both front and back surfaces,
Only the inner surface of the second reflector 42 'is a reflection surface. Other structures are the same as those of the embodiment described above with reference to FIG.

As described above, the heat radiated from the outer peripheral surface of the heater block 11 'heated by the sheath heater 12' is reflected by the first reflector 41 'and can be used for heating the heating element. . Also, the first reflector 41 '
Through the first reflector 41 'and the second reflector 4
The heat that has entered the housing formed by 2 ′ is reflected by the first reflector 41 ′ and the second reflector 42 ′, and the heat is confined inside the housing. Can be maintained at a high temperature and used for heating the inside of the housing. As a result, the heating of the heater block 11 'is assisted, and unnecessary electric power for heat generation of the heating element (the sheathed heater 12') can be suppressed, and power consumption can be reduced.

Another embodiment will be described with reference to FIG. In this embodiment, the heater block 11 '
A first reflector 41 'is provided in close contact with the outer peripheral surface of the second reflector 42', and only the outside of the thread running groove is opened inside the heat insulating cover 32 'to form a second reflector 42' having a substantially rectangular cross section.
Are spaced apart from the first reflector 41 ′,
It is provided by a reflector support member 34 'so as to substantially enclose 1'. The first reflector 41 'and the second reflector 42' are not connected to each other, so that the heat of the first reflector 41 'is not transmitted to the second reflector 42' by conduction. I have. Other structures are the same as those of the embodiment described above with reference to FIGS.

[0051]

In the conventional heating apparatus, the heat of the heating element heated by the heating element only escapes from the heating element to the outside through the heat insulating material and the heat insulating material. On the other hand, according to the present invention, the heat emitted from the heating element is reflected by the reflecting material (first reflecting material) provided so as to surround the heating element and assists the heating of the heating element. Further, the heat that has passed through the first reflector enters between the first reflector and the second reflector, where the heat is reflected by the two reflectors, and the heat is confined therein. It can be used to prevent heat from escaping from the body. For these reasons, extra power for heat generation of the heating element can be suppressed, and power consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic view of a draw false twisting apparatus provided with a heating device according to the present invention.

FIGS. 2A and 2B are cross-sectional views of a heating device according to the present invention used as a first heater in the embodiment of FIG. 1; FIG. 2A is a longitudinal cross-sectional view (AA cross section in FIG. 2B); ) Is a cross-sectional view (cross-section BB in FIG. 2A), and (c) and (d) are cross-sectional views of other examples, respectively.

3 is a cross-sectional view of a heating device according to the present invention used as a second heater in the embodiment of FIG. 1, wherein (a) is a vertical cross-sectional view (A-A cross section in FIG. 3 (b)), and (b) () Is a cross-sectional view (BB cross section in FIG. 3A), and (c) and (d) are cross-sectional views of other examples, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Supply raw yarn 2 1st feed roller 2a, 2b roller 3 Heat treatment device (1st heater) 3 'Heat treatment device (2nd heater) 4a, 4b Stabilizing track 5 Twisting device 6 2nd feed roller 7 Winding device 8 Traverse device 10 Bobbin holder 9 Friction roller 11, 21, 11 'Heater block 12, 22, 12' Sheath heater 31, 31 'Work surface side heat insulating material 32, 32' Heat insulating cover 33, 33 'Heat insulating material 34, 34' Reflecting material Support 41, 41 'First reflector 42, 42' Second reflector Y Yarn

Claims (8)

[Claims] 1. A heating device for a textile machine, wherein a reflecting material is provided so as to substantially surround a heating element for heating a yarn. 2. A heating apparatus for a textile machine comprising a heating element for heating a yarn and a heat insulating material provided outside the heating element, wherein the heating apparatus is in close contact with the heating element on the outside of the heating element and heats the heating element. A first reflecting material is provided so as to substantially wrap the body, and a second reflecting material is provided so as to wrap the heat insulating material and the outside of the first reflecting material at an interval from the first reflecting material. Heating equipment for textile machinery. 3. A heating device for a textile machine, comprising a heating element for heating a yarn and a heat insulating material provided outside the heating element, wherein a space is provided outside the heating element from the heating element. A first reflector is provided so as to substantially wrap the heating element, and a second reflector is provided so as to wrap the heat insulating material and the outside of the first reflector at an interval from the first reflector. And heating equipment for textile machinery. 4. A heating apparatus for a textile machine, comprising a heating element for heating a yarn and a heat insulating material provided outside the heating element, wherein the heating element is provided outside the heating element with an interval from the heating element. A first reflector is provided so as to substantially wrap the heating element, and a second reflector is provided so as to wrap the heat insulating material and the outside of the first reflector at an interval from the first reflector. A heating device for a textile machine, wherein one end of the reflector is connected to the second reflector to form a housing. 5. The heating apparatus for a textile machine according to claim 2, wherein both the front and back surfaces of the first reflecting material are reflecting surfaces. 6. A first heating device according to claim 1, wherein the heating device is disposed upstream of a twisting device of a false twisting machine.
A heating device for a textile machine, which is a heater and heat-sets a twist applied by the twisting device and traced back along the yarn. 7. A heating device according to claim 1, wherein the heating device is disposed downstream of a twisting device of a false twisting machine.
A heating device for a textile machine, which is a heater. 8. A heating device for a textile machine, wherein the heating device according to any one of claims 1 to 7 is a high-temperature heater heated to 400 ° C. or higher.