JP2974013B2 - False twister heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater used in a false twisting machine, and more particularly, to a heater having a yarn traveling path which allows a yarn to travel in a non-contact state with respect to a heating element.

[0002]

2. Description of the Related Art A false twisting machine is for performing a texturing process on a melt-spun synthetic fiber yarn.
Next, while being stretched in the process of reaching the second feed roller via the heater, cooling plate, and nip twister, false twisting and heat fixing are performed and sublimation processing is performed to process the drawn false twisted yarn.

[0003] As the above-mentioned primary heater, a contact heating type heater using a Dowsum steam heating method has been used. However, since the contact heating type heater heats at a temperature lower than the melting point of synthetic fibers, the heater is used. Is relatively long. Therefore, in order to cope with the miniaturization and high speed of the false twisting machine in recent years, a small non-contact high-temperature heater that heats the yarn in a non-contact state with a high-temperature heating body capable of raising the temperature above the melting point of the synthetic fiber has been developed. It is designed to be used as a primary heater.

In this non-contact high-temperature heater, two long slit-shaped yarn traveling paths are formed in a heating element having a substantially E-shaped cross section in which a heating element such as a sheathed heater is embedded, and along the yarn traveling path. Guides are arranged at predetermined intervals, and a heat insulating plate is stacked on the heating body so as to further deepen the yarn running path.

[0005] The yarn is introduced into the yarn traveling path from the outside,
It is guided by the guide and travels so as not to come into contact with a heating element whose temperature is higher than its melting point, and is heated at a high temperature. Also,
The guide is a plate having a U-shaped groove, and has a structure in which the plate is inserted and held in a slit provided in the heating element.

[0006]

However, the guide must be periodically cleaned because the guide is contaminated with the running yarn. In cleaning the guide, first, the heat insulating material stacked on the heating element is removed, and then the guide inserted into the slit of the heating element is removed. Therefore, the operation is the same as disassembling almost all of the heater, and there is a problem that the maintenance of the guide requires time and labor.

Accordingly, an object of the present invention is to provide a heater of a false twisting machine capable of easily maintaining a yarn guide.

[0008]

As a heater of a draw false twisting machine corresponding to the above-mentioned object, a member for forming a yarn traveling path through which a yarn can be introduced from the outside, a heating element of the member,
A shifter for introducing the yarn into the yarn traveling path is provided for a heater body including a guide for enabling the yarn in the yarn traveling path to travel in a state of non-contact with the heating element. In some heaters, the heater main body is supported by the machine base so as to be pivotable to a side opposite to a side on which the shifter is provided. Preferably, the shifter is attached to the machine base independently of the heater body.

In the present invention for solving the above-mentioned problem, when the heater main body is turned to the side opposite to the shifter so that the shifter does not interfere, the posture of the heater main body is changed to a posture that facilitates maintenance on the guide. When the shifter is attached to the machine base, it is not necessary to separate the shifter from the heater body when the heater body turns.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. FIG. 1 is a sectional view of a heater according to the present invention.

The heater H is provided with a long heating plate 11 having a rectangular cross section at the center, and a first heat insulating plate 12 and a second heat insulating plate 13 in a vertical posture on both left and right sides of the heating plate 11 with a space therebetween. The third heat insulating plate 14 in a horizontal position and the fourth heat insulating plate 15 in a vertical position are disposed above and below the heating plate 11.
Yarn running path 1 open to the outside on both left and right sides
6, 17 are formed. These heating plate 11 and heat insulating plates 12, 13, 14, 15 are provided with a cover 3 described later.
The state of being incorporated in the inner case 19 is maintained by the first and second cases 32. In particular, the heating plate 11 is screw-fixed to the inner cover 19 via a collar 37 so as not to shift in the lateral direction. The heat insulating plate 15 is positioned by the pins 18 with respect to the heating plate 11 so that the whole is not shifted. Expensive heating plate 1 with heating element 20 embedded
Since 1 has the minimum common size of the two yarn running paths 16 and 17, it is possible to finish the heater inexpensively as a whole.

The heating plate 11 and the heat insulating plates 12, 1
When the members 3, 14, and 15 are viewed from different angles, the yarn traveling paths 16, 17 are released to the outside and can introduce the yarn from the outside.
Are formed. The heating plate 11 is a part of this member as a heating element, and the first heat insulating plate 12 and the second heat insulating plate 13 can be extracted to the outside as a part of these members.

The above-mentioned heating plate 11 comprises a pair of copper alloy plates 11
Heating element 20 such as a sheathed heater is fitted into a and 11b and fixed by appropriate means such as bolts. The heat insulating plates 12, 13, 14, 15 are formed by hardly forming a heat insulating material such as calcium oxide via a binder. In particular, holes 21, 21 are formed in the heat insulating plates 12, 13 located on the left and right of the heating plate 11.
A hole 22 is provided in each of the holes 21 and 22.
4 is inserted. Insulation plates 12 and 13 are thread running path 1
It is one piece having the same height as the depth of 6,17,
The heat insulating plate 15 is extended on the heating plate 11. The heat insulating plate 14 is a bottom plate, and partitions the bottoms of the yarn running paths 16 and 17.

The guide 23 has a conical shape having a V-shaped groove 25, and a shaft 24 protrudes from one side. The conical circular portion is made of ceramic in order to improve the abrasion resistance to the yarn, and is formed in a thin hollow so as to withstand a sudden temperature change. V-groove 2 described above
The opening angle of 5 is 40 ° or more, preferably 60 ° or more. When the V groove 25 has a sufficient opening angle as described above,
When the yarn Y separates from the V-groove 25, it is unlikely that the yarn Y hits the side surface of the V-groove and burns out. Further, since the bottom of the V-groove 25 is circular, the radius of the radius where the yarn Y enters the V-groove 25 can be made larger than that of the plate-type guide, and when the guide 23 is rotated. , The portion in contact with the yarn Y can be easily updated.

The above-described heating plate 11, heat insulating plates 12, 13,
The structure for holding the assembly consisting of 14, 15 is shown in FIG.
And in FIG. In FIG. 1, a support bracket 29 for fixing several inner cases 19 at predetermined intervals is provided, and leg portions 29a of the support bracket 29 are fixed to the bottom of the outer case 26 with bolts or the like. Reference numeral 30 denotes a fluffy soft heat insulating material such as a ceramic fiber for filling a space.

The upper surface of the water case 26 is covered with covers 31 and 32 except for the yarn running paths 16 and 17. The attachment of the covers 31, 32 will be described with reference to FIG. The outer case 26 has a side surface 26b with respect to a bottom surface 26a.
And the lid 38 is fixed with bolts or the like.
The cover 31 is fixed to the front and rear bent portions 38 a of the lid 38 with screws 34. The cover 32 has a bent portion 32a at the front and back, and is fixed to the cover 33 with screws 35. The cover 33 has a slit 33 corresponding to the yarn running path.
a and 33b, and are fixed to the front and rear of the lid body 38 with screws 36. In addition, a ceramic ring is fitted in the portions 33c and 33d, where the yarns come in contact with the lower side of the slits 33a and 33b.

Next, the operation of the above-described heater H will be described. In FIG. 1, the heating element 20 is first energized to
1 to a high temperature of about 550-600 ° C. Then, when a thread is inserted to introduce the thread Y into the thread introduction paths 16 and 17,
The yarn Y is guided by the V-groove 24 of the guide 23 and is heated without contacting the high-temperature heating plate 11. In addition, the yarn introduction path 1
Since the widths of the entrances of the inlets 6 and 17 are narrowed by the thickness of the covers 31 and 32, the amount of heat released to the outside through the yarn introduction paths 16 and 17 is reduced.

If the guide 23 becomes dirty and the guide 23 is rotated to use a new surface, the cover 31 shown in FIG. 2 is removed by loosening the screw 34. Then, Figure 1
Since the cover 31 is not provided, the heat insulating plates 12 and 13 can be pulled out from the upper part of the drawing. The whole or a part of the heat insulating plates 12 and 13 is taken out of the outer case 26, and the guide 23 is cleaned, and the guide 23 is turned by hand so that the new surface comes into contact with the thread Y. For such manual maintenance, the shaft 24 is fitted into the holes 21 and 22 of the heat insulating plates 12 and 13 by a degree that can be turned by hand.

FIG. 3 is a cross-sectional view of a main part of another heater, which is different from that of FIG. 1 in that a part of a heating body can be extracted instead of a heat insulating plate. The heating element 40 made of brass or the like includes a concave first section 41 in which the heating element 20 is embedded and a second section 42 erected at the center of the concave section. It is the one that has been positioned. Heat insulating plates 43, 44, 45 are stacked on both sides of the first portion 41 and above the second portion 42, with the lower portion sandwiched between the heating elements 40 and the upper portion sandwiched between the heat insulating plates 43, 44, 45. Yarn running paths 16 and 17 are formed. Further, covers 46 and 47 are attached to the entrance sides of the yarn running paths 16 and 17. When the guide 23 is maintained, when the cover 47 is removed, the heat insulating plate 44 and the second portion 42 of the heating body 40 can be sequentially pulled out. In the case of FIG. 3, although there is only one piece to be extracted, the heating element 20 cannot be embedded because the second part 42 to be extracted cannot be wired, and is difficult to extract because it is at the back.

FIG. 4 shows a heater which is rotatable without removing it to the outside when the guide 23 is simply rotated. The heat insulating plates on both sides of the heating body 11 are made of an inner plate 51 and an outer plate
, The guide 23 is rotatably supported, and a driving means for rotating the guide 23 is attached to the outer plate 52.

The driving means comprises a pinion 53 rotatably supported by the outer plate 52, a rack plate 54 slidably supported by the outer plate 52, and a screw 55 for sliding the rack plate 54. A key groove 56 is machined on the shaft 24 of the guide 23, and a key 58 is machined on the shaft 57 of the pinion 53. Hole 59 for shaft 24 and shaft 5
The hole 60 for 8 is machined so as to be concentric.
When the inner plate 51 is pushed in by the downward groove 61 following the hole 59 as shown by the arrow a, the key 58 is engaged with the key groove 56 through the groove 61 as shown by the arrow b.

The rack plate 54 is slid in the direction of arrow c by a long hole 63 which engages with a pin 62 projecting from the outer plate 52. Then, the pinions 53 meshing with the teeth of the rack plate 54 simultaneously rotate in the direction of arrow d, and the guide 23 also rotates in the direction of arrow e. The ends of the rack plate 54 are screws 64, and the screws 55 are engaged with the screws 64. Therefore, when the handle 65 of the screw 55 is turned in the direction of arrow f, the rack plate 54 slides back and forth as indicated by arrow c. The handle protrudes outside the outer case (not shown), and the guide 23 can be rotated during operation of the false twisting machine. However, when cleaning the guide 23, it is necessary to remove the handle 65 and to extract the inner plate 51 and the outer plate 52 to the outside.

An example of application of the heater H according to this embodiment to a false twisting machine will be described with reference to FIG. The configuration is optimal for the primary heater 1 of a false twisting machine that performs texture processing on a melt-spun synthetic fiber yarn.

The false twisting machine guides a filament yarn Y unwound from a yarn supply package Ps supported on a creel stand 2 provided along the machine base 1 to a first feed roller F1 to perform primary texturing. The filament Y is stretched in the process of reaching the second feed roller F2 via the heater H1, the cooling plate 3 and the nip twister 4, and is false-twisted and heat-fixed to apply bulkiness to the yarn Y. Is wound around the winding package Pw in the winder 5 through the secondary heater H2.

The machine base 1 is constructed by mounting a ceiling beam 1c on a center pillar 1a and a side pillar 1b, and a primary heater H1 is mounted obliquely on the ceiling beam 1c and is connected to a point A of a support beam 7. Supported at point B. Point A has a structure in which a pin on the side of the heater H1 is placed and supported in an upward cutout of the support beam 7. Point B is structured to be fixed to the support beam 7 with screws and supported. The ceiling beam 1c is formed as a walkable platform. If the cooling plate 3 is lengthened to a certain extent, the inlet side of the primary heater H1 arranged in series with the cooling plate 3 becomes considerably high, so the primary heater is installed on the ceiling beam 1c. For this reason, the threading into the primary heater H1 is performed using the shifter 6 fixed to the ceiling beam 1c with screws or the like. Also,
A hood 8 fixed with screws to the support post 9 is provided at the inlet side of the primary heater H1 to store high-temperature air leaking from the inlet side of the primary heater H1 to reduce heat release and to accompany the traveling yarn Y. The flow is adjusted from normal temperature to high temperature.

At the time of maintenance of the primary heater H1, the primary heater H1 is turned around the point A toward the anti-shifter 6 side. Since the shifter 6 is attached to the machine base 1 and the hood 8 is attached to the machine base via the support 9, only the heater body of the primary heater H 1 can pivot as shown by the arrow C in FIG. 10, the horizontal posture can be maintained. As described above, since the member supporting the guide can be easily extracted to the outside, workability in exchanging the guide, rotating the guide, and the like is remarkably improved. That is, the rotation and cleaning of the guide can be performed by partially or entirely extracting the heat insulating plates 12 and 13 of FIG. In addition, even when maintenance such as overhaul of the primary heater H1 or replacement of the heat insulating plate is performed, the yarn running path faces upward as shown in FIG.

[0027]

In the invention having the above-described structure, if the heater main body is pivotally supported with respect to the machine base, the heater main body can be set in a horizontal posture as shown in FIG.

[Brief description of the drawings]

FIG. 1 is a sectional view of a heater according to the present invention.

FIG. 2 is a perspective view showing a state where a cover is attached to the heater of FIG. 1;

FIG. 3 is a sectional view of a main part of another heater according to the present invention.

FIG. 4 is a perspective view showing a driving means of a rotatable guide.

FIG. 5 is a device layout of a false twisting machine to which the heater of the present invention is applied.

[Explanation of symbols]

 Reference Signs List 6 shifter 7 support beam 11 heating plate (member) 12, 13, 14, 15 heat insulating plate (member) 16, 17 thread running path 23 guide 24 shaft 25 V groove 65 handle (drive means) Point A turning fulcrum

Claims (2)

(57) [Claims] 1. A member for forming a yarn traveling path through which a yarn can be introduced from the outside, a heating element of the member, and a yarn in the yarn traveling path traveling in a non-contact state with the heating element. A heater provided with a shifter for introducing a yarn into the yarn traveling path with respect to a heater body including a guide for enabling the heater body, wherein the heater body is on a side opposite to a side on which the shifter is provided. The heater of the false twisting machine supported on the machine so that it can turn. 2. The heater of the false twisting machine according to claim 1, wherein the shifter is attached to the machine stand independently of the heater main body.