JPH08120539A - Cleaning of heater in textile machinery - Google Patents

Abstract

PURPOSE: To enable the rapid threading for the next operation by removing molten carbides, etc., of fibers and an oil agent sticking to at heater inner wall and guides for stopping ballooning in a short time. CONSTITUTION: A heater is heated to the sublimation temperature or above of molten sticking materials and cold air is then jetted on a yarn passage 10 of the heater. Guides 11 for stopping ballooning are preferably evacuated from the yarn passage in the forced cooling. Sticking materials around the slits of the guides 11 for stopping the ballooning are removed by bringing the guides 11 for stopping the ballooning into contact with a cleaning member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a heater used in a textile machine such as a false twisting machine and a drawing false twisting machine, and more particularly,
The present invention relates to a method for cleaning a high temperature non-contact heater.

[0002]

2. Description of the Related Art Non-contact heaters used in conventional false twisting machines and drawing false twisting machines are of the slit type in which slits are formed along the yarn running direction. This heater has a poor thermal efficiency because heat escapes from the slit side. Therefore, the present applicant is currently developing a tubular high-temperature non-contact heater in which a balloon stopper guide is arranged at predetermined intervals in the yarn traveling space and the temperature is raised to the melting point of the synthetic fiber or higher.

[0003]

This heater also has a problem that when the running of the yarn is once stopped due to a yarn breakage or the like, the heater is heated at that moment.
The yarn comes into contact with the balloon stopper guide and the inner wall which are heated to a high temperature of 0 to 400 ° C. to melt and cut, and the fibers and the carbide of the oil agent adhere to the balloon stopper guide in the form of starch syrup. If it is left as it is, the yarn will melt from the beginning of the next operation, and the operation will be impossible. Therefore, it is conceivable to raise the temperature of the heater to 500 ° C or higher to sublimate the carbide, but this heater has good heat insulating properties, so it takes about 2 hours for a long time to lower the raised temperature to the original temperature. Requires.

An object of the present invention is to remove the fibers and the molten carbide of the oil agent adhered to the inner wall of the heater and the balloon stopper guide in a short time so that the yarn hooking for the next operation can be quickly performed. I am trying.

[0005]

In order to achieve the above object, the method for cleaning a heater of a textile machine according to the present invention comprises heating the heater to a temperature not lower than the sublimation temperature of the molten deposit, and then applying cold air to the yarn path of the heater. It is jetted, and it is desirable to retract the balloon stopping guide from the yarn path during forced cooling. Further, the adhered matters around the slits of the balloon stopper guide are removed by bringing the balloon stopper guide into contact with the cleaning member.

[0006]

In the method for cleaning the heater of the textile machine constructed as described above, when the yarn breakage occurs and the fibers and the carbide of the oil agent are melted and adhered to the inner wall of the heater and the balloon stop guide, each balloon stop guide is Is retracted from the yarn path and the temperature of the heater is raised above the sublimation temperature of the fused material, most of the molten deposit sublimates in a short time. Then, when the balloon stop guide is retracted from the yarn path and cool air is ejected, the temperature quickly drops to the yarn processing temperature. Further, the adhering matter that remains in the vicinity of the slit of the balloon stopping guide and cannot be removed even at a high temperature comes into contact with the cleaning member and is removed every time the balloon stopping guide moves.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for cleaning a heater of a textile machine according to the present invention will be described with reference to FIGS.

The heater to which this cleaning is applied is used, for example, as the first heater 3 in the drawing false twisting machine shown in FIG. This draw false twisting machine includes a creel stand 1 on which a yarn supply package 2 in which partially drawn yarns are wound, a first heater 3, a cooling plate 4, a twister 5, and a second heater 6, It is composed of a take-up winder 7 that forms a winding package 8 for processed yarns, and is widely known (Japanese Patent Laid-Open No. 62-15 / 1987).
341). In this drawing false twisting machine, the twisting of the yarn Y is applied to the yarn Y by the twister 5 and spread to the first heater 3. There, the yarn Y is plasticized and advances to the cooling plate 4 to fix the twisted state. Then, when passing through the twister 5, the opposite twist is applied, and crimps having different winding directions are mixed in each filament to become bulky. After that, the process proceeds to the second heater 6, the torque is reduced, and the wound package 8 is wound up. Meanwhile, the yarn Y is about 1.2 times as large as that of the polyamide yarn and about 1.
Each is stretched 6 times.

Next, a heater to which the cleaning of the present invention is applied will be described with reference to FIGS. 1 and 2.

In this heater, a heating element is arranged in a case 9 via a heat insulating material, and has a cylindrical yarn traveling space 10 therein, and a plurality of balloon stopper guides 11 appear in and out of the yarn traveling space 10. It is a cylindrical heater that is arranged as possible, and a guide cleaning member 14 is arranged at a position where it comes into contact with the balloon stopper guide 11 on the protruding and retracting path. An air nozzle 15 for threading is arranged at the inlet of this heater.

The heating element is, for example, a heat-resistant cylindrical substrate having a heating wire spirally wound around it, and the heating wire causes 300 to 100 inside the space of the heater.
The temperature can be raised to 0 ° C.

The balloon stopper guide 11 is made of high-purity alumina and has a slit for guiding the yarn Y formed at the center thereof. The depth of the slit is the shallowest in the center so that the yarn Y contacts all the balloon stopper guides 11,
It gets deeper toward both ends. Instead of this, a balloon stop guide 1 having slits of the same depth
1 may be attached so as to be offset from the shaft center so that the central one is apex at the apex.

Each balloon stopper guide 11 is a support vertical rod 1 made of a material having a low thermal conductivity such as stainless steel.
It is fixed to 2.

The support vertical rods 12 are fixed to the support horizontal rods 13 outside the case 9 at a predetermined interval of 150 mm or less at which ballooning does not occur. The case 9 is provided with a minimum through hole through which the support vertical rod 12 and the balloon stopper guide 11 can move. The support vertical rod 1
Instead of 2, a plate-shaped support can be adopted.

The support lateral rod 13 is adapted to be able to be lowered in the arrow direction by hand or by driving means when threading. As the support lateral rod 13 descends, the balloon stopper guides 11 are retracted from the cylindrical internal space 10 as indicated by the dotted line 11 'in FIG. Since the supporting vertical rod 12 is made of a material having a low thermal conductivity, its lower end is at a low temperature that can be touched by the hand. Further, instead of lowering and retracting the balloon stopper guide 11 during threading, the balloon stopper guide 11 may be tilted and retracted.

The guide cleaning member 14 is composed of a wire brush or the like, and is fixed at a position on the moving path of the balloon stopping guide 11 where it contacts the balloon stopping guide 11.
Each time the balloon stopper guide 11 is moved, the balloon stopper guide 11 comes into contact with the balloon stopper guide 11 and removes the adhered substances around the slit.

The deposit to be removed does not scatter even if the temperature rises above 500 ° C. It is titanium (Ti), sodium (N) contained in threads and oils.
a), sulfur (S), and silicon (Si). Among them, titanium and silicon are hard, and usually, if the amount of adhesion is increased after operating for about half a year, it has an adverse effect such as scratching the yarn.

When yarn breakage occurs in the heater constructed as described above, the heater temperature of the heater of the weight where the yarn breakage occurs is raised to 400 ° C or higher, preferably 500 ° C (in a short time). (The temperature is raised), and the fusion product of the yarn is sublimated in a short time. In addition, when the temperature is raised to 500 ° C. or higher, the fusion product of the yarn is carbonized and becomes fine carbon powder and scatters.

Next, in order to shorten the temperature lowering time, the balloon stopper guides 11 are simultaneously withdrawn from the cylindrical internal space 10 by an operation from the outside to widen the cylindrical internal space 10 and the threading air nozzle. Cold air is blown from 15 to forcibly cool it, and the temperature is quickly lowered to the yarn processing temperature. In addition, the conventional slit type heater has two slits for running the yarn, and the yarn in one slit is cut,
If the temperature is raised to sublimate the molten deposit, the temperature inside the other slit will also be high, which will result in unnecessary heating. However, the heater used here corresponds to one heater for one yarn. That's not the case.

When the balloon stopping guide 11 is moved by such cleaning and threading, the balloon stopping guide 11 comes into contact with the guide cleaning member 14 every movement, and the periphery of the slit of the balloon stopping guide 11 is contacted. The deposits attached to the are removed.

[0021]

Since the present invention is configured as described above, it has the following effects.

That is, it is possible to remove the fibers and the molten carbide of the oil agent adhering to the inner wall of the heater and the balloon stopper guide in a short time, and then to lower the temperature to the yarn processing temperature in a short time. Therefore, the threading for the next operation can be performed quickly, and the operation efficiency of the textile machine such as the false twisting machine is improved. Further, it is possible to automatically remove the deposits around the slits of the balloon stopper guide, which are difficult to remove.

[Brief description of drawings]

FIG. 1 is a perspective view of a heater to which the cleaning according to the present invention is applied.

FIG. 2 is a side view of a heater to which the cleaning according to the present invention is applied.

FIG. 3 is a side view of a drawing false twisting machine.

[Explanation of symbols]

 9 Case 10 Thread Travel Space 11 Balloon Stop Guide 12 Support Vertical Rod 13 Support Horizontal Rod 14 Cleaning Member 15 Threading Air Nozzle

Claims (3)

[Claims] 1. A method for cleaning a heater of a textile machine, which comprises heating the heater to a temperature higher than the sublimation temperature of a molten deposit and then blowing cold air to the yarn path of the heater. 2. The method for cleaning a heater of a textile machine according to claim 1, wherein the balloon stopper guide is retracted from the yarn path during forced cooling. 3. A method for cleaning a heater of a textile machine, wherein a balloon stopper guide is brought into contact with a cleaning member disposed in the retreat path to remove deposits around the slit.