JPH0261486A - One-side non-contacting type drier - Google Patents

Abstract

PURPOSE:To transfer a sheet in zigzag state and permit the saving of a space by a method wherein a chevron type conveyer, having a chevron type endless structure, is provided in a drier and the sheet is dried by putting it on the up slope and the down slope of the chevron type conveyer. CONSTITUTION:A chevron type conveyer 2 is provided in the main body 1 of a drier and a sheet (s), transferred through an inlet port 3, is guided along the up slope of the chevron type conveyer 2 and arrives at an outlet port 4 along a down slope across the crest of the chevron type conveyer. Then, the sheet is shifted to next chevron type conveyer 2 and is dried during zigzag transfer, then, is carried out of the outlet port 4 of the main body 1 of the drier finally. The chevron type conveyer 2 is provided with chevron type suction ducts 9 at the inside of the same while drying air is sent through the sheet (s), the perforated parts 10 of an endless conveyer 5 and the through holes 11 of the chevron type suction ducts 9. The shifting of the sheet (s) may be smoothened by a method wherein the position of the suction of the inlet side slope of the chevron type conveyer 2 is positioned lower than the position of the suction of an outlet side slope of the same.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for surface processing such as single-sided coating, printing, and spraying on a sheet-like object without the processed surface coming into contact with a roll or the like. This is a single-sided, non-contact type dryer that can dry hair in seconds.

[Prior Art] Conventionally, when a sheet-like object such as cloth, film, nonwoven fabric, or paper is coated or otherwise surface-treated, the treated surface comes into contact with rolls or other mechanical elements during the subsequent drying or heat treatment process. Then, a trace (mark) of the object that came into contact with
This can cause various problems such as dirt getting in and staining the rolls, etc., and staining sheets that come later.

To solve this problem, dryers are generally used in which a long flat or arcuate conveyor is installed to support the sheet on only one side and dry the sheet as it moves so that the processed surfaces do not touch each other. .

However, the dryer as described above has a major drawback in that its volume is large and a large space is required.

On the other hand, double-sided contact dryers that use rolls to convey sheets in a zigzag pattern can achieve a long processing length in a short space, making the equipment more compact. Because of this, if it is used to dry single-sided processed sheets, the above-mentioned contact marks will occur and the commercial value of the product will be lost.

[Problems to be Solved by the Invention] The present invention is a dryer that contacts only one side of the sheet, and has the advantage of being able to convey the sheet in a zigzag pattern like the conventional double-sided contact type, making it possible to save space. The aim is to provide a single-sided non-contact type dryer.

[Means for Solving the Problems] As a result of various studies to achieve the above object, a chevron-shaped transport body having an endless chevron-shaped structure was installed in the dryer, and the sheet was moved up the mountain-shaped transport body. If you move the sheet from one slope to the other while applying suction, and if necessary, use multiple mountain-shaped conveyors in series to dry the sheet while conveying it in a zigzag pattern, you can create an extremely excellent single-sided non-contact system. He discovered that it could be used as a hair dryer.

That is, the present invention provides a dryer equipped with an inlet for carrying in sheets and an outlet for carrying out the sheets, and a perforated chevron-shaped conveying body for sucking and conveying the sheets is provided inside the dryer. A single-sided non-contact type dryer, characterized in that the chevron-shaped conveyor endlessly circulates around the outer surface of the chevron-shaped suction duct.
The main points are as follows.

It is also possible to design a single dryer with multiple dryers connected in series or multiple chevron-shaped conveyors, and that the height of the chevron-shaped conveyor is the same as the length in the horizontal direction. If the suction on the ascending slope of the chevron-shaped conveyor is performed from a lower position than the suction on the downward slope, the sheet will smoothly transition between adjacent chevron-shaped conveyors. This is also a major feature of the present invention.

The present invention will be described by way of one embodiment with reference to the drawings.

FIG. 1 is a side sectional view of one embodiment of the dryer of the present invention.

FIG. 2 is a schematic rear cross-sectional view of the embodiment of FIG. 1;

As shown in FIG. 1, in the present invention, a chevron-shaped conveyor (2) is installed in the dryer main body (1), and sheets (s) carried in from an entrance (3) are transported by the chevron-shaped conveyor (2). 2) is guided along the ascending slope, crosses the top of the II type, is guided along the descending slope, exits from the exit (4), moves to the next chevron-shaped conveyor (2), and repeats the same process. During this zigzag conveyance, the dryer is dried and finally conveyed out from the outlet (4) of the dryer main body C1).

Although the embodiment shown in Fig. 1 shows the case where two chevron-shaped conveyors (2) are provided, three or more may be installed in series, or depending on the purpose, one It is good even if only one is provided.

In addition, in the case of Figure 1, there is one chevron-shaped conveyor (2) inside one dryer body (1), and two dryers are connected in series to form a large dryer. However, the dryers may be connected in series like this,
Multiple chevron-shaped conveyors (2
) may be provided consecutively.

The chevron-shaped carrier (2) in the present invention is a triangular shape as shown in FIG. 1, other shapes such as a trapezoid or a vertically long arch.
It is a mountain-shaped conveyor that gradually becomes narrower toward the E section, and its main body is a perforated endless conveyor (5
), and a drive roll (6), tension roll (7), guide roll (8), etc. are installed in order to circulate this endless conveyor (5) in a chevron shape.

A chevron-shaped suction duct (9) is provided inside this chevron-shaped conveyor (2), and drying air is supplied to the sheet (
S), and even the perforated part (
10), and the through hole (11) of the chevron-shaped suction duct (9).
) for drying.

In other words, the chevron-shaped suction duct (9) is the chevron-shaped conveyor (2).
The sheet (S) is conveyed by the perforated endless conveyor (5) while the chevron-shaped conveyor (2) circulates around the outer surface of the chevron-shaped suction duct (9). The drying air is blown from the blowing duct (12) toward the sea (S), and this air enters the chevron-shaped suction duct (9) and passes through the suction duct connection port (13). It escapes, exits, is heated again, and circulates.

Figure 2 mainly shows this air circulation.
The hot air is circulated through the connecting duct (1) by the hot air circulation fan (14).
5) to the spray duct (12) of the dryer body (1).
), hot air is blown towards the sheet (S) from here, and as mentioned above, it passes through the sheet C5), the endless conveyor (5), and the chevron-shaped suction duct (9) to remove moisture from the sheet (S). Alternatively, the air is sucked into the suction duct connection port (13) while removing the solvent, passes through the heat exchanger (16), and is heated and dried again here by the hot air circulation fan (14). ).

As shown in section E, blowing hot air onto the sheet (S) not only accelerates drying, but also its pressing action promotes close contact between the sheet (S) and the endless conveyor (5). .

The motor (17) in Fig. 2 is for driving the fan, and the sprocket (18) is for giving rotation to the drive roll (6) of the chevron-shaped carrier (2), although it is not shown in the drawing. (18) is provided separately.

In the mountain-shaped conveyor (2) of the present invention, it is preferable that the shape is as high as possible, and the height in the vertical direction is required to be at least half the length in the water direction. If it is lower, the zigzag distance will be shorter and it will be the same as when using the upper half of a drum dryer.
Therefore, the purpose of the present invention cannot be achieved.

Therefore, in order to lengthen the drying distance by zigzag, that is, to obtain a longer treatment L (in a short space), it is desirable to have a shape as shown in Fig. 1 whose height is larger than the length of the base. be.

In addition, the positions where the chevron-shaped conveyor (2) in the present invention receives suction from the chevron-shaped suction duct (9) on its inside are its Vl, the upward slope, that is, the entrance side slope, and the downward slope, that is, the exit side slope. However, if the suction position on the inlet side slope is set lower than the suction position on the outlet side slope, sheets (S) will be transferred from the chevron-shaped conveyor (2) to the adjacent chevron-shaped conveyor (2). The transition is very smooth.

In other words, the sheet (S) conveyed along the downward slope
When it gets close to the exit (4), its suction is stopped and the suction force is lost, and as it goes further down, the suction position on the ascending slope of the adjacent chevron-shaped conveyor (2) becomes as described above. Since it is located at the bottom, the sheet (s) is sucked by this suction and smoothly transferred to the adjacent chevron-shaped conveyor (2).
It is possible to move to

As a means of adjusting this suction position.

As shown in Figure 1, the position of the drive roll (6) on the outlet side is higher than the position of the tension roll (7) on the inlet side, and the slope on the outlet side of the chevron-shaped suction duct (9). In addition to adjusting the suction, blowing hot air from below will assist the transfer of the sheet(s) and improve drying efficiency. That's what I do.

In addition, it is preferable that the guide roll (8) provided at the top of the chevron-shaped conveyor (2) is a porous roll.
Since suction can also be performed from this guide roll (8), smooth conveyance is obtained and drying is also promoted.

Although the endless conveyor (5) in the chevron-shaped conveyor (2) of the present invention is perforated, it may be a perforated belt or a net-like conveyor, for example. It is also possible to match the desired drying conditions by preparing various perforated products and changing the sagging rate.

In other words, by removing the side panel of the dryer body (1), the endless conveyor (5) of the chevron-shaped conveyor (2) can be easily replaced, and the perforated state can be adjusted as shown in It becomes.

[Function] The present invention has the following configuration, and when a sheet (S) is carried in from the first entrance (3) of the dryer main body (1), the sheet (s) passes through the first chevron-shaped conveyor. The endless conveyor (2) is attracted by its suction force to the ascending slope of
The endless conveyor (5) is supported by the endless conveyor (5) and moves up this slope by the guide rolls (8).
The sheet (S) changes direction, passes over the top of the chevron-shaped conveyor (2), and is conveyed down the slope.

When approaching the first exit (4), the next chevron-shaped conveyor (
Since the suction stops on one side higher than the lower suction in 2), the seah (s) is released from the first endless conveyor (5) and descends in a smooth state, and the dryer body (1) next to it is released. The chevron-shaped conveyor (2) located near the entrance (3) of The dryer is transported to the slope, and after drying is completed, it reaches the outlet (4) of the second dryer main body (1).
) is guided by an exit guide roll (19) and carried out to the outside.

Although the exit guide roll (19) and the processed surface of the sheet (S) come into contact with each other, no trouble occurs because the drying, heat treatment, etc. have been completed at this point.

During this movement of the sheet (s) in the dryer, hot air or other processing gas is blown onto the sheet (S), passes through the sheet (s), enters the suction duct, and is circulated as described above. It is then dried, heat treated, and subjected to other treatments.

Incidentally, although not shown in the drawings, a perforated cover may be provided at an appropriate interval between the sheets (S).

The explanation given above is based on the case where two chevron-shaped carriers (2) are installed, but depending on the purpose, three or more chevron-shaped carriers (2) may be installed, or even one chevron-shaped carrier (2) may be installed. Furthermore, even if the dryer unit sinks once, or the chevron-shaped conveyor (two
) may be arranged consecutively as a unit, as described above.

Further, although the present invention has been described as a dryer, it is not limited to a dryer, and can also be used as a heat treatment device or a steaming device.

[Effects of the Invention] The present invention is as described above, and its effects are that it is possible to convey a sheet while supporting it in a non-contact state on one side, and that the conveyance distance can be long in a small space.

Furthermore, if a plurality of chevron-shaped conveyors are arranged in series, the sheets can be dried while being conveyed in a zigzag pattern, resulting in a very long processing length, resulting in a dryer with high processing capacity in a compact space.

Furthermore, the endless conveyor with a chevron-shaped conveyor can be easily removed by removing the side panel of the dryer, making it easier to maintain, and it can also be replaced with a perforated conveyor that provides a suction rate that meets the purpose. -ing

As described above, the present invention has very excellent effects and is extremely useful for achieving space saving as a processing device for sheet processing which requires non-contact on one side.

FIG.

FIG. 2 is a schematic rear cross-sectional view of the embodiment of FIG. 1;

(1)...Dryer body, (2)...Chevron-shaped carrier, (3)...Population, (4)...Exit, (5)...
(2) Endless conveyor (6)... Drive 1) J roll, (7)... Tension roll, (8)... Guide roll, (9)... Chevron-shaped suction duct, (1
0)...(5) perforated part, (11)...(9) through hole, (12)...blow duct), (1:3)...suction duct contact hj [1 (14)... Hot air circulation fan, (15)... Connection duct), (16)... Heat exchanger, (17)... Motor (18)... Sprocket, (19)...・Exit guide roll, (S)... sheet

[Brief explanation of the drawing]

Figure 1 is a side view of one embodiment of the dryer of the present invention. figure Confectionery 2 figure

Claims (1)

[Claims] 1. A dryer equipped with an inlet for carrying in sheets and an outlet for carrying out the sheets, the dryer having a perforated chevron-shaped conveyor for sucking and conveying the sheets. 1. A single-sided non-contact dryer characterized in that the chevron-shaped conveyor endlessly circulates around the outer surface of the chevron-shaped suction duct. 2. The single-sided non-contact dryer according to claim 1, wherein the vertical height of the chevron-shaped conveyor is at least half of its horizontal length. 3. Claim 1, wherein the suction position on the slope on the entrance side of the chevron-shaped conveyor is lower than the suction position on the slope on the exit side.
Single-sided non-contact dryer as described. 4. A single-sided non-contact dryer comprising a plurality of dryers according to claim 3 arranged in series. 5. A single-sided non-contact type dryer in which a plurality of the chevron-shaped carriers according to claim 3 are provided in one dryer.