JPH0441765A - Drier for dyed sample cloth - Google Patents

Abstract

PURPOSE:To enable accurate judgment of hue by automatically setting the drying, cooling and moisturizing times according to the metsuke (weight of fiber, 4.3560g/m<2>) of dyed sample cloth and controlling the water-content and temperature of the sample cloth to prescribed values. CONSTITUTION:A wet sample cloth S sampled in the course of dyeing is fixed to a sample station 12 with a holder 11 and the metsuke of the sample cloth S is inputted. A controller 45 reads the operation time of each valve from a memory and sets timers 46-49. A switch is closed, the timers 46-49 are started, selector valves 18, 19 are shifted to the position of solid lines, a feeding valve 26a and an exhaust valve 24a are set to opened positions and the opening of a control valve 27a is determined to carry out the drying of the cloth for a prescribed period. Thereafter, the selector valves 18, 19 are shifted to the position of dotted lines, cooling air is circulated for a prescribed period and the mist in a humidifying box 39 is introduced into an air duct 10 to supply moisture to the cloth S for a prescribed period.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is useful for drying a sample cloth taken from the cloth during dyeing for color matching when dyeing a long cloth such as a woven fabric or a knitted fabric. Regarding suitable equipment.

[Conventional technology] Advances in electronic engineering and optics have led to the development of superior color measuring instruments, and color matching, which is the determination of the color difference between a fabric or sample cloth and a standard color sample, is now possible in addition to the conventional judgment with the naked eye. It has become possible to carry out extremely accurate measurements using colorimetric equipment.

Dyeing of fabric is carried out under predetermined conditions after accurately weighing the dye and auxiliary agent according to the weight of the fabric, and the fabric is colored with a desired hue. Usually, when the same fabric is dyed multiple times,
Due to human and mechanical causes such as measurement errors of fabrics and dyes, variations in dyeing conditions, and the state of the fabric before dyeing, the hue of the dyed fabric is not necessarily constant for each dyeing.

For this reason, when dyeing a long piece of fabric with a dyeing machine, a part of the fabric is cut out during the dyeing process to make a sample fabric, which is then dried and compared with a standard color sample with the naked eye or with a colorimeter. The staining conditions are adjusted.

Conventionally, drying of the dyed sample cloth was carried out by passing the sample cloth cut from the wet cloth between a pair of rubber rollers pressed against each other to dehydrate it to a moisture content of about 60%, and then drying the sample cloth with hot air. The dryer is placed in the dryer, the degree of dryness is determined by the feel of the dryer, and the product is removed from the dryer and left in the air to cool.

[Problems to be Solved by the Invention] Generally, the hue of a cloth or sample cloth changes depending on its moisture content; for example, a fabric with a high moisture content appears darker. Fabrics have different weights and textures depending on the season, such as winter, summer, spring and autumn, so the moisture content after dehydration tends to change. For this reason, the moisture content of sample fabrics dried using conventional drying equipment tends to vary, and the sample fabrics may be compared with standard color samples with the naked eye or with a colorimetric device while the sample fabrics are insufficiently dried or overdried.

In this case, even if the color measurement means were excellent, it was not possible to make an appropriate determination because the hue of the dyed sample fabric, which is the object to be measured, changes as the moisture content of the sample fabric becomes normal.

In addition, fabrics dyed with acid dyes may change color due to heat, and if colors are matched without sufficient cooling after drying, accurate color measurements cannot be made.

Due to the above-mentioned problems, in the conventional drying apparatus, the dyed hue of a long piece of fabric may not match the standard color sample.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drying device for a dyed sample cloth that maintains constant moisture content and temperature after drying the dyed sample cloth to support accurate hue determination.

Another object of the present invention is to provide a drying device that can be installed in a small space.

[Means for Solving the Problems] In order to achieve the above object, the drying device of the present invention includes a sample cloth station that is provided in the ventilation path and removably fixes the dyed sample cloth, and a sample cloth station that is installed in the ventilation path and that connects the ventilation path with each other. a hot air circulation path and a cold air circulation path as air passages; a switching valve disposed in the hot air circulation path and the cold air circulation path for switching either hot air or cold air to flow into the ventilation path; and the sample fabric. and a controller that switches the switching valve according to the basis weight of the airflow to control the time period during which hot air or cold air flows through the ventilation path.

[Function] When the basis weight of the sample cloth to be dyed is inputted to the controller and the sample cloth is set in the sample cloth station, the controller switches and controls the switching valve according to the basis weight of the sample cloth and blows warm air or hot air for a predetermined period of time. Send cold air to keep the moisture content and temperature of the sample fabric constant.

[Embodiment] Next, an embodiment of the present invention will be described in detail based on the drawings.

As shown in FIGS. 1 to 3, a ventilation passage 10 is provided in the center of the drying device. The ventilation path 10 has an external shape in which two truncated pyramids are connected vertically with their bottom surfaces, and in the center thereof is a sample fabric station 12 that removably fixes a sample holder 11.
is formed. The station 12 consists of an opening 12a followed by a holding part 12b. A blower fan 13 is provided at the lower part of the ventilation path 10. The sample holder 11 consists of a rectangular upper frame 11a and a lower rectangular frame 11b for holding the sample cloth S, and a handle 11C is integrally provided on the negative side thereof. A stainless steel lattice lid is stretched over the upper frame 11a and the lower frame 11b, respectively, and a hinge 11e is provided on the side remote from the handle 11C.

A hot air circulation path 16 and a cold air circulation path 17 are provided which use the ventilation path 10 as a common path. Warm air is shown by a solid line arrow, and cold air is shown by a broken line arrow. Ventilation passage 10 and circulation passage 16.
Switching valves 18 and 19 are provided at the intersections of the switching valves 17. These switching valves 18 and 19 switch so that either hot air or cold air flows into the ventilation path 10.

The hot air circulation path 16 includes an upper flow path 21, a steam heater 22, and a lower flow path 23 in addition to the ventilation path 10.

The upper flow path 21 is provided with an exhaust port 24 and an exhaust valve 24a, and the lower flow path 23 is provided with a temperature sensor 25, an air supply port 26, and an air supply valve 26a. A steam pipe 27 and a drain pipe 28 are connected to the heater 22, and the steam pipe 27 is connected to a flow rate control valve 27a, and the drain pipe 28 is connected to a trap 28a.
are provided respectively.

The cold air circulation path 17 includes an upper flow path 31, a radiator 32, and a lower flow path 33 in addition to the ventilation path 10.

The upper flow path 31 has an exhaust port 34 and an exhaust valve 34a, and the lower flow path 33 has a hot water supply pipe 35, an air supply port 36, and an air supply valve 3.
6a are provided respectively. A cold water pipe 37 and a drain pipe 88 are connected to the radiator 32, and the cold water pipe 37 is provided with an on-off valve 37a. The hot water supply pipe 35 has a hot water supply valve 35a, the base end of which is connected to the atomizer 40 via the humidity box 39. A water pipe 41 is connected to the atomizer 40.

45 is a controller consisting of a microcomputer, and includes a first timer 46. 2nd timer 47° 3rd timer 4
8 and a fourth timer 49 are built in.

The first timer 46 is for the drying process, the second timer 47 is for the cooling process, the third timer 48 is for the humidifying process, and the fourth timer 49 is for operating the atomizer 40. A basis weight input means 50 consisting of a keyboard and the output of the temperature sensor 25 are connected to the control input of the controller 45. In addition, the control output includes the blower fan 13, switching valves 18, 19, exhaust valve 24a,
34a, air supply valves 26a, 36a, flow control valve 27a
and hot water supply valve 35a are respectively connected. The controller 45 is provided with a memory 51 that stores the opening and closing times of the valves according to the input basis weight. Specifically, as the basis weight increases, T , , T , , T , , T , which will be described later.

A long time is set for each.

Next, a method of drying the sample cloth S using the drying device having such a configuration will be explained.

In this example, a sample fabric S cut from a wet, thin summer fabric that is in the process of being dyed is passed between a pair of rubber rollers (not shown) to dehydrate it to a moisture content of about 60%, and then the sample fabric It is held in the holder 11. This sample holder 11 is opened from the opening 12a of the sample cloth station 12 to the holding portion 12b.
Insert and secure.

Next, the basis weight M of the sample cloth S fixed to the sample cloth station 12 is input using the keyboard which is the basis weight input means 50. The controller 45 uses the memory 51 based on this weight M.
The opening/closing times of the valves are read out from , and the timers 46 to 49 are controlled. In this example, due to the fabric weight M, T, = 60 seconds, T2
= 20 seconds, Ts = 40 seconds, and T4 = 30 seconds.

The sample cloth S is automatically processed in the following process order.

(a) Drying process When the start switch (not shown) is turned on, the timer 46 starts, and at the same time, the controller 45 switches the switching valves 18 and 19 to the solid line positions shown in the figure, opens the air supply valve 26a and the exhaust valve 24a, and turns on the fan 13. drive The opening degree of the control valve 27a is determined according to the temperature detected by the temperature sensor 25, and the flow rate of steam flowing into the heater 22 is controlled. Moisture evaporates from the sample cloth S by receiving warm air sent by the fan 13,
As shown in FIG. 4, as time T increases, the temperature of the sample cloth S increases.

(b) When the cooling process time T1 has elapsed, the timer 47 is activated by the time-up signal of the timer 46. At the same time controller 45
switches the switching valves 18 and 19 to the positions indicated by the broken lines in the figure, and opens the air supply valve 36a and the exhaust valve 34a. Also atomizer 4
0 is activated by the timer 49 for a time T4. As a result, the fine mist ejected from the atomizer 40 is transferred to the moisture box 39.
filled with.

The air circulated by the continuously driven fan 13 is cooled by the radiator 32, and the sample cloth S uses this cold air for a time T.
It receives only 2 and is cooled.

(c) When the humidifying process time T2 has elapsed, the timer 48 is activated by the time-up signal of the timer 47, and the controller 45 opens the hot water supply valve 35a. The mist filling the humidity box 39 is sucked by the air flow in the lower flow path 33 and flows into the ventilation path 10, giving appropriate humidity to the sample cloth S for a time T. time T
, the fan 13 stops.

When the sample cloth holder 11 is pulled out from the sample cloth station 12 and the sample cloth S is taken out, the sample cloth S has a predetermined moisture content and cloth temperature suitable for color matching.

Note that in the above example, the sample cloth was dried, then cooled, and then moisturized, but depending on the type of sample cloth, structure, etc., the process order can be changed so that it is dried, then moisturized, and then cooled. .

Further, in the above example, drying of a sample cloth cut from a long cloth in the process of dyeing was described, but the present invention is not limited to this.
Of course, this can also be applied to beaker-dyed sample fabrics.

[Effects of the Invention] As described above, according to the drying apparatus of the present invention, the drying and cooling times are automatically set according to the basis weight of the dyed sample cloth, so the moisture content and cloth temperature of the sample cloth can be adjusted. The desired value is obtained, and even after repeated drying, a constant moisture content and cloth temperature are always obtained, and accurate hue determination can be supported.

Further, since the drying device of the present invention uses the ventilation path as a common path for the hot air circulation path and the cold air circulation path, there is an advantage that it can be installed compactly without taking up much space.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a main part of a drying apparatus according to an embodiment of the present invention. FIG. 2 is an external perspective view of the sample cloth holder. FIG. 3 is a central sectional view of the sample cloth holder in an open state. FIG. 4 is a diagram showing the change in sample cloth temperature with the opening/closing time of the valve. 10: Ventilation path, 12: Sample cloth station, 16: Hot air circulation path, 17: Cold air circulation path, 18.19: Switching valve, 39: Moisture box, 40: Atomizer, 45: Controller, 46-49: Timer , 50: Fabric weight input means.

Claims (1)

[Scope of Claims] 1) A sample cloth station provided in a ventilation path and removably fixing a dyed sample cloth; a hot air circulation path and a cold air circulation path that use the ventilation path as a common path; and the warm air. a switching valve disposed in a circulation path and a cold air circulation path for switching either hot air or cold air to flow into the ventilation path; A drying device for dyed sample cloth, comprising: a controller for controlling the time flowing through the ventilation path. 2) The apparatus for drying a dyed sample cloth according to claim 1, wherein the cold air circulation path is provided with a humidifying means for humidifying the sample cloth.