JPS6359467A - Liquid flow dyeing method and apparatus - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a jet dyeing method in which an object to be dyed is circulated and dyed by a circulating flow of dye liquor and dyed while being retained in the middle, and a jet dyeing apparatus used therefor. It is something.

[Conventional technology]

Generally, jet dyeing, in which the object to be dyed is dyed while being circulated and moved by a circulating flow of dye liquor, is carried out using a jet dyeing apparatus as shown in FIG. 4.

This jet dyeing device includes a dyeing bath 1 having a circulation path for the dye solution.
, a reel 3 provided in the dyeing bath 1 to assist the circulation of the dyed object 2, and a dye liquid discharge nozzle that discharges the dye liquid into the reflux path so that the dye liquid circulates through the reflux path of the dye bath 1. 4
, a retention part 5 formed in a part of the circulation path of the dye liquor and for retaining the dye liquor and the dyed object 2, a dye liquor suction port 6.7 provided in the retention part 5, and the dye liquor suction port. 6.7
The apparatus is provided with a dye liquid circulation assisting means for appropriately sucking dye liquid from the dye liquid discharge nozzle 4 and discharging it from the dye liquid discharge nozzle 4. Note that 8 is a heat exchanger for increasing the temperature of the dye liquor when the dye liquor sucked in from the dye liquor suction ports 6 and 7 is discharged from the dye liquor discharge nozzle 4. The suction of the dye liquid in the dye liquid circulation means is as follows:
This is carried out by the dye liquid circulation pump 11 via the dye liquid suction amount adjusting valves 9 and 10, which are respectively provided in the vicinity of the dye liquid suction port 6.7.

Staining using the jet dyeing apparatus described above is performed in the following procedure. That is, first, the opening/closing door 12 provided at one end of the dyeing bath 1 is opened and the dyed object 2 is introduced into the dyeing bath 1, and after passing around the circulation path via the reel 3, the end of the dyeing object 2 is introduced into the dyeing bath 1. Sew the ends together to make an endless. Next, the dye liquid is discharged from the dye liquid discharge nozzle 4, and the object 2 to be dyed is circulated and moved by the function of the dye liquid momentum control lever 3, and after being sufficiently retained in the retention section 5, the dye liquid is sequentially moved in the direction of the arrow. Move 2. This operation is repeated repeatedly, and sufficient dyeing is achieved by increasing the temperature of the dye solution. Note that the liquid flow conditions for aligning and smoothly transferring the dyed objects 2 in the retention section 5 are influenced by the discharge pressure of the dye liquid discharge nozzle 4 and the rotational speed of the reel 3, and are influenced by the dye liquid suction port 6. 7
It is regulated by increasing or decreasing the amount of dye liquid sucked in. The increase or decrease in the amount of dye liquid suction is determined by the opening degree of the dye liquid suction amount adjusting valve 9.10 and the performance of the dye liquid circulation pump 11. Here, the performance of the dye liquid circulation pump 11 and the discharge pressure of the dye liquid discharge nozzle 4 are usually
During dyeing, the valves 9 and 10 are kept fixed, and a person manually adjusts the opening degrees of the valves 9 and 10 while checking the retention status of the dyed object 2 to create appropriate liquid flow conditions.

[Problem that the invention seeks to solve]

However, in the jet dyeing described above, the degree of retention of the dyed object 2 varies depending on the amount of the dye liquid, the fabric material and structure of the dyed object 2, the pH of the dye liquid, etc. Furthermore, as the physical properties of the dyed object 2 and the dye liquor change due to changes in temperature, the physical properties of the dyed object 2 and the dye liquor change significantly, so manual adjustment becomes extremely complicated. If this adjustment does not go well, the dyed objects 2 may move back and forth in the retention section 5, causing them to become entangled, or, for example, the dyed objects 2 may be too close to the front, resulting in some parts of the dyed objects 2 being overlapped.
At this point, the cloth becomes entangled with the reel 3 or clogs between the reel 3 and the dye liquid discharge nozzle 4.

Further, at high temperatures, even if the object 2 to be dyed is skewed toward the rear part, fabric clogging or uneven pressing may occur at the rear part. Therefore, it is necessary to stop the operation of the apparatus and loosen the tangles of the dyed material each time.

Therefore, conventional jet dyeing requires human supervision and is prone to troubles during operation.

The present invention was made in view of the above circumstances, and provides an excellent jet dyeing method and a jet dyeing apparatus used therein, which realize automation of jet dyeing and do not cause trouble during operation. The purpose is to

[Means for solving problems]

In order to achieve the above object, the present invention provides a liquid jet dyeing method in which a dyed object is circulated and dyed by a circulating flow of dye liquid and dyed while being retained in the middle of the dyeing process, and the dyeing liquid is The first gist is a liquid jet dyeing method in which dyeing is performed while automatically adjusting the flow rate of the dye liquid based on a preset value by at least one automatic flow rate adjustment means provided on the flow path. , a dyeing bath having a dye liquor circulation path, a dye liquor discharge nozzle that discharges the dye liquor into the circulation path so that the dye liquor circulates through the circulation path of the dyeing bath, and a part of the dye liquor circulation path. a retention part formed in the reservoir part for retaining the dye liquor and the dyed object, a dye liquor suction port provided in the retention part, and dye liquor circulation for sucking in the dye liquor as appropriate from the dye liquor suction port and discharging it from the dye liquor discharge nozzle. A liquid jet dyeing apparatus comprising: a dye liquid circulation means that is a combination of a dye liquid suction amount adjustment valve that adjusts the suction amount of the dye liquid sucked from the dye liquid suction port, and a dye liquid circulation pump. The dye liquid suction ffi control valve instructs the dye liquid suction amount control valve to open and close in advance to achieve the optimum liquid flow condition based on changes in the physical properties of the dyed material and dye liquid in the dyeing bath. The second gist is a liquid jet dyeing apparatus that is controlled by a valve opening/closing control means inputted to do so.

In other words, the present inventors felt a strong need to automate the adjustment of the retention condition, which had traditionally been done manually, and conducted a series of studies. We discovered that by predicting and automatically adjusting the opening of the dye liquid suction amount control valve, the retention of the dyed material can be automatically controlled and dyeing can be carried out efficiently without any trouble. invention has been achieved.

Next, the present invention will be explained in detail.

The jet dyeing of the present invention is carried out using, for example, a jet dyeing apparatus as shown in FIG.

This jet dyeing device basically has the same configuration as the conventional jet dyeing device (see Fig. 4), and corresponding parts are given the same reference numerals as in Fig. 4. . However, in order to finely adjust the degree of retention of the dyed object 2 in the retention part 5, the retention part 5 has three dye liquid suction ports 15 and 16.
．． 17 are provided, each suction port 15, 16.1
7, there are dye liquid suction amount adjustment valves 18 and 7, respectively.
19 and 20 are attached to communicate with the dye liquor circulation pump 11. Then, the dye liquid suction amount adjustment valve 18
．． 19 and 20 are both connected to a valve opening/closing control means 21 described below, and the opening and closing of the valves are automatically adjusted in accordance with instructions from the valve opening/closing control means 21. Note that 21a is a data input means for inputting data to the valve opening/closing control means 21, and 21b is a data input means for reading changes over time in the dyeing bath 1, such as changes in dye liquid temperature, and transmitting the read signal to the valve. This is a means for reading changes over time for inputting into the opening/closing control means 21.

As shown in FIG. 2, the valve opening/closing control means 21 includes an input circuit 22 that receives data input from a data input means 21a for inputting data, and a temporal change reading circuit 22 that reads temporal changes in the dyeing bath 1. A read signal input circuit 23 receives a read signal from the means 21b, and a storage operation circuit 2 stores the signals from the input circuit 22 and the read signal input circuit 23, performs logical operations, and outputs a command signal.
4, and a valve opening/closing signal output circuit 25 that converts the command signal from the storage/arithmetic circuit 24 into a valve opening/closing instruction signal and outputs the signal. Note that a computer is usually installed in this valve opening/closing control means 21.

Using the jet dyeing apparatus described above, jet dyeing is performed, for example, in the following manner. First, preliminary experiments and analysis are performed on the following factors that affect the change in the physical properties of the dyed object 2 and the dye liquor, which influence the retention condition of the dyed object 2.

(Physical property change factors) ■ Type of object to be dyed ■ Type of dye solution ■ Dyeing bath temperature ■ Nozzle discharge pressure ■ Reel speed Then, the optimal liquid flow conditions of the retention section 5 under the combination of these factors are determined, and this is determined in advance. A dye liquor suction amount regulating valve 18 that is inputted to and stored in the memory/arithmetic circuit 24 of the valve opening/closing control means 21 and simultaneously creates a liquid flow in the retention section 5 that meets the optimum liquid flow conditions;
A predetermined program is stored in the storage arithmetic circuit so as to output a command instructing the opening degree of 19.20.

Next, the type of the object 2 to be dyed and the dye liquid are selected and input into the data input means 21a, and then jet dyeing of the object 2 to be dyed is started. The operation is almost the same as that described in the conventional example. However, in the past, the opening degree of the dye liquid suction amount control valve (9, 10 in Fig. 4) was manually adjusted by humans, but in the present invention, the data input to the data input means 21a and the The memory calculation circuit 24 of the valve opening/closing control means 21 sequentially analyzes the data input from the change reading means 21b every moment, outputs a valve opening/closing signal, and automatically adjusts the opening degree of the valve. A suitable liquid flow corresponding to changes in the physical properties of the dye liquid is automatically created, and the dyed articles 2 are evenly aligned in the retention section 5 and the cloth is moved smoothly. Therefore, the dyeing operation progresses smoothly without the troubles that occur in the conventional method. This is the greatest feature of the present invention.

By the way, some liquid jet dyeing devices are equipped with a sequence control device that programmatically controls the temperature of the dye solution in the dyeing bath 1. When applying the present invention to this type, for this temperature control device,
It is preferable to incorporate a valve opening/closing control means 21 which adjusts the valve opening/closing by predicting changes in the physical properties of the object 2 to be dyed and the dye liquor.

In addition, in the liquid jet dyeing apparatus described above, in order to create the optimum liquid flow, the opening degree of the dye liquid suction amount adjustment valve 18° 19.20 is automatically adjusted, and at the same time, the pump drive of the dye liquid circulation pump 11 is An inverter capable of switching and converting the speed is attached to the motor (not shown), and the frequency of the inverter is automatically controlled in the same way as valve opening/closing adjustment to adjust the pump suction force and help create the optimal liquid flow. Good too. In addition, as a means for adjusting the pump suction force of the dye liquid circulation pump 11, in addition to the method of controlling the frequency of the inverter by turning the inverter to the maximum as described above,
A valve may be provided on the suction side of the dye liquid circulation pump 11, and the opening degree of this valve may be automatically controlled.

Furthermore, in these devices, the dyed object 2 that stays and moves
To help adjust the moving speed of the reel 3, an inverter may be attached to the reel drive motor (not shown) of the reel 3, and the frequency of this inverter may be automatically controlled.

Furthermore, the dyeing method of the present invention is applicable not only to the one-way circulation type jet dyeing apparatus as described above, but also to the reversal type as shown in FIG. 2 and those in which dyeing is performed while the dye solution is inverted) can also be applied. In this case, it is more difficult to adjust the dye liquid suction amount control valves 18', 19', and 20'' than in the one-way circulation type, so it can be said that the advantage of switching from manual operation to automation is extremely large.In addition, 3', 4 ' are the reel and dye liquid discharge nozzle used during reversal, respectively.

Next, examples will be described in detail.

〔Example〕

Flow dyeing was actually carried out using the jet dyeing apparatus shown in FIG. A wool serge woven fabric was used as the object to be dyed 2, and an aqueous solution containing a wool dye and a dyeing aid was used as the dyeing liquid. At this time, the bath ratio was 1:10, and the discharge pressure of the dye liquor discharge nozzle was 0.
．． The cloth speed was set at 5 kg/cA and 180 m/min. Note that, prior to dyeing, the object to be dyed 2 was refined. Further, after finishing dyeing with the dye liquid, indirect cooling was performed to 70°C, and then water washing was performed.

In this device, the dye liquid suction amount adjustment valves 18, 19, and 20 are adjusted according to the dye liquid temperature (including scouring liquid and washing liquid) in each process of scouring, dyeing, and washing. The valve opening/closing control means 21 was programmed and set so that opening and closing could be adjusted.

In this way, the dye liquid suction amount adjustment pulp 18.19
．． As a result of automatically adjusting the valve opening of 20 in accordance with the temperature of the dye solution, the wool surge woven fabric was dyed smoothly without any troubles such as clogging. In other words, conventionally, when the temperature of the dye liquid was low, the surface tension of the water was large and the fabric was stiff, so the fabric floated up, shifted toward the front side and moved to the reel 3, and was easily entangled with the reel 3, and conversely, the temperature of the dye liquid was low. When the water is high, the surface tension of the water is small and the fabric is soft, so the fabric tends to sink to the bottom and lean toward the rear, causing fabric jams, uneven pushing, or tangling accidents at the rear. The suction amount is adjusted to the upstream side of the retention section 5, in the middle,
No problems occurred because adjustments were made at three locations on the downstream side.

〔Effect of the invention〕

As described above, when the liquid jet dyeing method of the present invention is used, an optimal liquid flow that does not cause problems such as fabric clogging is always maintained in the retention area, so dyeing can be carried out efficiently. Can be done. Moreover, the above-mentioned optimal liquid flow is obtained by automatically opening and closing the dye liquid suction amount adjusting pulp based on sequence control, so there is no need for a person to be constantly near the device and manually control it, as in the past.
This greatly reduces labor. Furthermore, since there is no need to accumulate human know-how, there is also the advantage that anyone can easily control the device.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are block diagrams of the jet dyeing apparatus of the present invention,
FIG. 3 is an explanatory diagram of an inverted type jet dyeing device, and FIG. 4 is an explanatory diagram of a conventional jet dyeing device. 1... Dyeing bath 2... Item to be dyed 3... Reel
4... Dye liquid discharge port 5... Retention part 11... Dye liquid circulation pump 15.16.17... Dye liquid suction port 1
8,19゜20... Dye liquid suction amount adjustment valve 21
...Valve opening/closing control means Fig. 2

Claims (2)

[Claims] (1) A liquid jet dyeing method in which the object to be dyed is circulated and dyed by the circulating flow of the dye liquid and dyed while being retained in the middle,
Dyeing is performed while automatically adjusting the flow rate of the dye liquid based on a preset value by at least one automatic flow rate adjusting means provided on the flow path of the dye liquid in the retention area of the dyed object. A jet dyeing method characterized by: (2) A dye bath having a circulation path for the dye liquor, a dye liquid discharge nozzle that discharges the dye liquid into the circulation path so that the dye liquid circulates through the circulation path of the dye bath, and a dye bath having a circulation path for the dye liquid; A retention part formed in a part of the reservoir for retaining the dye liquor and the dyed object; a dye liquor suction port provided in the retention part; and a dye liquor suction port provided in the retention part, and a dye liquor for sucking the dye liquor from the dye liquor suction port and discharging it from the dye liquor discharge nozzle. A liquid flow dyeing apparatus comprising a liquid circulation means, the dye liquid circulation means comprising a dye liquid suction amount adjustment valve that adjusts the suction amount of the dye liquid sucked from the dye liquid suction port, and a dye liquid circulation pump. The above-mentioned dye liquid suction amount adjustment valve opens and closes the dye liquid suction amount adjustment valve in advance to obtain the optimum liquid flow condition based on changes in the physical properties of the dyed material and the dye liquid in the dyeing bath. A liquid jet dyeing apparatus characterized in that the apparatus is controlled by a valve opening/closing control means inputted with an instruction.