JPS6038707Y2 - Heat treatment equipment for synthetic fiber tow - Google Patents

Description

[Detailed description of the invention] In this invention, synthetic fiber tow is placed on a conveyor and continuously transferred to a dryer having multiple heating sections such as a horizontal band type that generates an air flow for heat treatment. Regarding equipment.

Generally, synthetic fiber tow is fed to a crimping device after stretching and crimped, and then continuously loaded onto a conveyor via a J-type chute, etc., and sent to a heat treatment device that circulates heated gas. After being subjected to drying, heat setting, etc. and cooling at the other end, it is taken out and further transferred to the next process.

As shown in FIG. 1, such a heat treatment apparatus is a conveyor-type heat treatment apparatus in which a ventilation circulating flow W is generated in a number of partitioned heat treatment chambers or heating chambers 2 provided across a conveyor 1, or A device called a so-called band type or tunnel type dryer is usually used.
The crimped tows T are placed in a forest at the front end of the conveyor 1 and transferred to the heating chamber 2 while being sequentially dried, heat set, and heat treated by a cooler, and then taken out from the rear end.

The partitions that partition the heating chamber 2 of this device are arranged so that the upper wire mesh 1a is sandwiched between the upper and lower partition plates 3 and 4, but the upper surface side of the wire mesh 1a loads the tow T, so the height of the loaded tow is A sufficient gap is provided between the wire mesh 1a and the partition plate 3 in consideration of variations in height and the like.

In addition, a wire mesh fixing bar or support piece is fixed to the lower surface of the wire mesh 1a, so that the lower surface of the wire mesh 1a and the partition plate 4 are fixed to the lower surface of the wire mesh 1a.
There are also large gaps between them.

For this reason, there is a problem in that leakage of hot air or suction of outside air is large from these gaps, particularly at both ends of the conveyor, resulting in a large amount of energy loss and also being unfavorable from the standpoint of quality or process control.

The present invention was developed in view of this problem, and is a device in which synthetic fiber tow is placed on a conveyor, transferred to a horizontal heat treatment machine body having a number of divided heating chambers, and heated with a hot air flow. In this method, a flapper that can swing freely in the longitudinal direction of the conveyor is attached to the partition plate that partitions the heating chamber, and a tip part of the lower partition plate is curved in the direction of movement of the conveyor in correspondence with the flapper. This is characterized in that a flapper equipped with a weight that applies rotational force in the opposite direction is swingably provided in the longitudinal direction of the conveyor to close the gap formed between the conveyor and the partition plate.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 2 is a sectional view showing an embodiment of the present invention, FIG. 3 is a view taken along the line A--A in FIG. 2, and FIG. 4 is an enlarged detailed view of section B in FIG.

In the figure, 11 is an endless porous plate or wire mesh 12, and a sprocket 13 for moving this.
．． 14, etc., and the conveyor 11 is arranged to pass through the dryer main body 15, which consists of a large number of heating chambers 17 partitioned by partition plates 16.

The heating chamber 17 is equipped with a heater, a rectifying plate, a fan, etc., and the tow T loaded on the net 12a above the conveyor 11 and moving is given a circulating airflow to dry or heat set.

In addition, the heating chamber 17 in the present invention is not necessarily limited to the case where the tow T is heated by hot air, but includes the case where the tow T heated by outside air or cold air is cooled.

An upper flapper 18 is provided on a wire mesh 12a along the upper partition plate 16a at the front end of the dryer main body 15, and is composed of a shaft 19 and a plate-like member 20 attached to the shaft 19 so as to be swingable in the longitudinal direction of the conveyor 11. .

21 is a lower partition plate 16b at the front end of the wire mesh 12a at the non-side position.
A lower flapper provided along the shaft 21', shaft 21'
The plate-shaped body 22 is attached to the conveyor 11 so as to be swingable in the longitudinal direction of the conveyor 11, and the weight 24 is fixed via a rod 23 protruding from the plate-shaped body 22.
is such that its tip 22' is curved in the direction of movement of the conveyor 11, and is inclined in the direction of movement of the conveyor 11 so that the tip 22' is always behind the lower surface of the wire mesh 12a or the support 12b. It is arranged.

Furthermore, such a flapper 18.21 is attached to the dryer main body 15.
Although the rear end partition plate 16 is also provided, since these are the same as those described above, the details thereof will be omitted.

In the apparatus having such a configuration, the tow T is continuously loaded in a forest shape onto the conveyor 11 by a chute (not shown), and is transferred to the dryer main body 15 where a predetermined heat treatment is performed. Upper and lower flappers 18, 21 are provided in the section, so that a sufficient heat seal is achieved and heat loss is reduced.

That is, the upper flapper 18 is connected to the forest tow T and the partition plate 1.
Since it hangs down swingably so as to close the gap S between it and 6a, leakage of hot air from this gap is almost prevented.

Here, since the flapper 18 is swingably provided, even if it comes into contact with the standing tow T, it will not deteriorate the loading condition or quality of the standing tow T.

When the height of the standing tow T changes depending on production conditions or brands, it is preferable to provide the upper flapper 18 so as to be movable in the vertical direction.

In addition, since the lower flapper 21 is in a state of being tilted in the direction of movement of the conveyor 11 and is constantly in contact with the wire mesh 12a under the force of the opposite direction by the weight 24, the gap S' therebetween is also closed. , the circulation of hot air or outside air will be prevented.

In this embodiment, flappers 18 and 21 are provided on the partition plates at the front and rear ends of the dryer main body 11, but the main body 1
Needless to say, it may be provided in the heating chamber 17 within the heating chamber 1.

Further, the plate-like body of the flapper may be divided into a plurality of pieces, and a convex portion may be provided in accordance with the width of the conveyor or the width of the standing tow so as to close the end space in the width direction of the conveyor.

As explained above, according to the present invention, since a flapper that can swing freely in the direction of movement of the conveyor is provided along the partition plate of the heating chamber, it is possible to almost completely close the gap between the conveyor and the partition plate. This makes it possible to almost completely prevent hot air or outside air from flowing in and out, thereby greatly reducing heat loss and allowing the tow to be heat-treated quickly and stably.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing a conventional embodiment, Fig. 2 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 3 is a view taken along the line A-A in Fig. 2, and Fig. 4 is a longitudinal sectional view showing a conventional embodiment. It is an enlarged detailed view of part B in the figure. 11... Conveyor, 15... Dryer main body, 16... Partition plate, 17... Heating chamber, 18... Upper flapper 21・・・・・・
Lower flapper.

Claims (1)

[Scope of utility model registration request] In a device in which synthetic fiber tow is placed on a conveyor, transferred to a horizontal heat treatment machine body having a number of divided heating chambers, and heated by hot air ventilation, the conveyor is placed on a partition plate that divides the heating chambers. In addition to installing a flapper that can freely swing in the longitudinal direction, a weight is attached to the lower partition plate corresponding to the flapper, the tip of which is curved in the direction of movement of the conveyor and which applies rotational force in the direction opposite to the direction of movement of the conveyor. A heat treatment device for synthetic fiber tow, characterized in that an attached flapper is swingably provided in the longitudinal direction of a conveyor to close a gap formed between the conveyor and a partition plate.