JPH0450358A - Air-blower in tenter - Google Patents

Abstract

PURPOSE:To perform a stable spreading treatment irrespective of the kind of a sheet by connecting blowing nozzles disposed above and below the sheet to separately controllable blowing openings, respectively, in a tenter. CONSTITUTION:A blowing nozzle 14 disposed above a sheet 7 and a blowing nozzle 15 disposed below the sheet are connected to independently controllable blowing openings 24 and 25, respectively. When the sheet 7 passing through the blowing device is heavy, the volume of air blown from the blowing nozzle 15 is increased or the volume of the air blown from the blowing nozzle 14 is decreased to surely prevent the generation of scratch due to the sagging of the sheet by preventing the sagging thereof.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a blower device for a tenter, and more particularly to a blower device used when tentering a woven fabric (sheet-like material).

[Conventional technology]

Generally, woven fabric shrinks in its width direction (direction perpendicular to the weaving direction) during post-processing processes such as desizing, bleaching, and refining, so it is necessary to widen it to a predetermined width (standard width). There is. The fabric widening device used here widens the fabric using a so-called pin tenter that pierces and holds the edges of the fabric with a needle, and heat sets the fabric when passing it through a heat treatment device (air blower) in this state. ing. The heat treatment device has a plurality of hot air blowing nozzles (air blowing nozzles) in the vertical direction of the fabric passing through the inside.
A pair of hot air blowing nozzles facing each other on the upper and lower sides are connected to one air outlet, and an air volume distribution adjustment plate is provided between the air outlet and the hot air blowing nozzle, and this air volume distribution adjustment plate allows the upper and lower It is configured to distribute the amount of air to the hot air blowing nozzle.

[Problem to be solved by the invention]

However, in the above-mentioned conventional heat treatment apparatus, the air volume supplied to the plurality of hot air blowing nozzles arranged vertically is fixed by an air volume distribution adjustment plate. If the fabric is heavy and contains a lot of chemicals from post-processing processes such as bleaching and refining, the center of the fabric passing through the heat treatment equipment will sag and come into contact with the hot air nozzle below, causing scratches on the fabric. There was a risk that it would be lost. In order to prevent this, if the fabric is set to increase the amount of hot air ejected from the hot air blowing nozzle at the bottom, the fabric may be thin (and light), and the hot air from the hot air blowing nozzle will blow the fabric upward. The present invention was proposed in view of these problems, and the present invention was proposed in view of these problems. The purpose is to prevent as much as possible the passing sheet-like objects from sagging or being stirred up.

[Means for Solving the Problems] In order to achieve the above object, the air blowing device for a tenter according to the present invention has both ends of a sheet-like object held by a holding section of a chain, and while the sheet-like object is traveling in an expanded state. In a tenter blower device configured to blow air from a plurality of blow nozzles arranged in the vertical direction of a sheet-like object, the blow nozzle arranged above the sheet-like object and the blow nozzle arranged below the sheet-like object. are connected to air outlets that can be controlled independently. [Operation] First, if the sheet-shaped object passing through the blower is heavy, increase the air volume from the blower nozzle placed below the sheet-like object, or reduce the air volume from the upper blower nozzle. let Then, the sheet-like material passing through the blower is pushed up by the wind from the blower nozzle below, and sagging is prevented. Next, if the sheet-like material passing through the blower is light, the air volume from the blower nozzle disposed below the sheet-like object is reduced, or the air volume from the air blower nozzle above the sheet-like object is increased. This prevents the sheet-like material from being blown by the wind from the blow nozzle below.

【Example】

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a blower device for a tenter according to the present invention will be described based on the drawings. Figure 1 is a schematic side view of the tenter, Figure 2 is the ■- of Figure 1.
(2) It is a line sectional view, and the reference numeral 1 in the figure indicates the tenter as a whole. This tenter l includes a fabric supply section 2, a heat setting device (air blower) 3, a folding storage section 4, and a fabric supply section 2.
A pinning device 5 is provided extending from the folding storage section 4 through the heat setting device 3. The pinning device 5 includes a pair of upper and lower width-expanding rollers 8, 8 having grooves carved on their surfaces so as to spread the fabric 7 supplied from the guide roller 6 in the width direction, and the fabric 1 spread by the width-widening rollers 8, 8. Pin plates 9, 9 that pierce and hold the ears from below, and the fabric 7 supplied to the pin plates 9, 9.
an overfeed roller 10 that supplies the material so that it is in a tension-free state, an endless tenter chain 11 provided in a pair on the left and right between the overfeed roller 10 and the folding storage section 4, and the tenter chain 11. A brush roller 12 presses the selvedge part of the fabric 7 pinned to the pin plates 9 from above so that it does not fall off.
It will be equipped with. The pin plates 9 have a plate-like member attached to one end of the chain main body, which is formed into a loop shape in plan view with both ends connected by pins to each other, and a large number of needles are implanted on the upper surface of the plate-like member. The fabric 7 is rotated and conveyed by a drive device (not shown) while the selvedge part of the fabric 7 is pierced by a needle and held, and the fabric 7 is conveyed by a slide drive device (not shown). 7 is configured to be movable in the width direction. The heat setting device 3 includes a peripheral wall 1 as shown in FIG.
3a, 13b, and 13c are each formed into a box shape using a heat insulating material.
A plurality of hot air blowing nozzles (air blowing nozzles) 14 and 15 are arranged above and below the fabric 7, respectively, and the hot air blowing nozzles 14 15 is connected to a hot air supply means 16 via a plenum chamber 17 in which an air volume distribution guide 18 is formed. A burner 20 is arranged on one side of the hot air circulation path 19, and a blower fan 21 supplies hot air to the hot air blowing nozzle 14 in the upper part on the other side, and a blowing fan supplies hot air to the hot air blowing nozzle 15 in the lower part. 22, and ventilation ports 24 and 25 are formed in front of each ventilation fan 21 and 22, respectively.
The plenum chamber 17 is connected to the plenum chamber 17. Further, the control of the rotational speed of the blower fans 21 and 22 and the amount of heat generated by the burner 20 can be arbitrarily set by a control device (not shown). The operation of the tenter 1 configured as described above will be explained next. First, the fabric 7 is spread out from the fabric supply section 2 by a widening roller 8 without wrinkles, and then fed to the pin plates 9 by an overfeed roller 10. At the pin plates 9, the selvage portion of the fabric 7 is pressed down by the brush roller 12, pierced by the pin, and held firmly. The fabric 7 held by the pins of the pin plates 9 is pulled and adjusted to a predetermined width when being conveyed to the heat setting device 3 side, and then adjusted to a predetermined width by the heat setting device 3. It is heat set. Here, if the fabric 7 passing through the heat setting device 3 is thick or heavy due to the impregnated chemical solution, the hot air is sent to the hot air blowing nozzle 15 disposed below the fabric 7. The rotational speed of the blower fan 22 is increased to increase the amount of hot air. Then, the fabric 7 passing through the heat setting device 3 is pushed up by the hot air uniformly blown from the hot air blowing nozzle 15 below, and the center portion is prevented from sagging. In the above embodiment, in order to prevent the fabric 7 from sagging, the amount of hot air from the hot air blowing nozzle 15 disposed below is increased, but in addition to or in place of this, Of course, the amount of hot air from the upper hot air blowing nozzle 14 may be reduced. In addition, if the fabric 7 passing through the heat setting device 3 is light, reduce the amount of hot air from the hot air blowing nozzle 15 disposed below the fabric 7, or reduce the amount of hot air from the hot air blowing nozzle 14 located above the fabric 7. Increasing the air volume will reduce the weight of light fabrics 7
This prevents the air from being blown up by the wind from the hot air blowing nozzle 15 below. In this way, the fabric 7 set to a predetermined width by the heat setting device 3 is folded and stored in a carrier (not shown) in the folding storage section 4. In the above embodiment, an example was shown in which the air blowing device of the present invention was implemented in a heat setting device of a tenter, but the present invention is not limited to this, and it can also be attached to a relaxer, other fabric processing devices, or drying devices for films, etc. Of course, it is possible to
Needless to say, this method can also be applied to devices that blow out cold air. Further, in the above embodiment, the selvage of the fabric is held by a pinning device, but it is of course possible to use a clip tenter device.

【Effect of the invention】

As explained above, according to the blower device for a tenter of the present invention, when waiting for a heavy sheet-like object to pass through the blower device, the air volume from the blower nozzle arranged below the sheet-like object can be adjusted. Increase the amount of air or reduce the amount of air from the upper air nozzle to prevent the sheet material from sagging.
There is an advantage in that it is possible to reliably prevent the sheet-like material from hanging down and coming into contact with the blower nozzle and causing scratches as in the past. In addition, if the sheet-like object passing through the blower is light, reduce the air volume from the blower nozzle located below the sheet-like object, or increase the air volume from the air blower nozzle above the sheet-like object. This prevents the sheet-like object from being blown up by the wind from the lower blower nozzle, thereby preventing the blown sheet-like object from coming into contact with the upper blower nozzle or coming off from the holding parts that hold both ends. The advantage is that it can be done. This has the advantage that stable and uniform width widening processing can always be performed regardless of the type of sheet-like object.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic side view of a tenter, and FIG. 2 is a sectional view taken along the line 1--2 in FIG. 1. 7...Sheet-like material (fabric), 11...Chain, 1
4.15...Blower nozzle (hot air blowing nozzle), 2
4.25...Air vent.

Claims (1)

[Claims] (1) Both ends of the sheet-like object are held by the holding parts of the chain, and while the sheet-like object is traveling in an expanded state, air is blown from a plurality of air blowing nozzles arranged in the vertical direction of the sheet-like object. A blower device for a tenter, characterized in that a blower nozzle disposed above a sheet-like object and a blower nozzle disposed below a sheet-like object are each connected to an independently controllable blower port. .