JPS62243867A - Method and apparatus for automatically adjusting marcerizingor bleaching liquid of cloth - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for continuously adjusting the concentration of a treatment liquid used for scouring, bleaching, etc. of fabric, and an automatic adjustment device used therefor.

[Prior art and its problems 1 Fibers, especially natural fibers, contain various impurities, and these impurities become obstacles when dyeing, chemical processing, etc. are carried out. Therefore, it is necessary to remove these impurities by a scouring process. In addition, trace amounts of pigment impurities contained in fibers cannot be completely removed by the scouring process alone, and bleaching is required to improve the whiteness of textile products or to dye them in vivid colors.

Scouring is performed by impregnating the fabric with an aqueous solution of a scouring agent such as caustic soda, and bleaching is performed by impregnating the fabric with an aqueous solution of a scouring agent such as caustic soda.
This is done by impregnating it with an aqueous solution of a bleaching agent such as hydrogen peroxide. When performing these steps, if the concentration of the above-mentioned processing liquid changes, processing unevenness occurs, resulting in non-uniform product quality.

Therefore, conventionally, an operator measures the concentration of the processing solution in the processing tank at predetermined time intervals, and based on these measurements, adds and mixes the stock solution of the processing solution into the processing tank to keep the concentration of the processing solution almost constant. I was keeping it.

However, such a method requires a skilled worker and takes time to adjust the concentration, resulting in poor processing efficiency.

For this reason, an automatic adjustment device for processing liquid concentration was invented (Japanese Patent Application Laid-Open No. 110966/1983).

This device adds a neutralizing agent to an aqueous solution of caustic soda squeezed from a fabric, detects the concentration before adding the neutralizing agent by neutralization titration, and adjusts the concentration of caustic soda to a predetermined concentration based on this concentration. A raw solution of caustic soda is added to and mixed with the fabric, and the concentration of the aqueous caustic soda solution that is impregnated into the continuously transferred fabric is automatically adjusted so that it is always constant.

According to this device, the concentration of the treatment liquid is automatically adjusted to a constant value, which is very convenient when processing one type of fabric, but the concentration of the treatment liquid will also vary if the type of fabric is different. Since the method has to be changed accordingly, there is a drawback that it is not possible to process multiple types of fabrics continuously.

Therefore, an object of the present invention is to continuously adjust the concentration of a treatment liquid used for treatments such as scouring and bleaching of cloth to a predetermined concentration for each cloth, and to continuously carry out the treatment of multiple types of cloth. The object of the present invention is to provide a method for carrying out the method and a device for use therein.

[Means for Solving the Problems] The method of the present invention involves continuously adjusting the concentration of a treatment liquid used for scouring, bleaching, etc. of multiple types of fabrics to a predetermined concentration for each fabric. , a method for continuously performing the above-mentioned treatment on a plurality of types of fabrics, which consists of the following steps.

First, the processing order of a plurality of types of fabrics is determined based on the concentration of the processing liquid determined for each fabric.

Then, these fabrics are successively joined in the above order, and the density determined for each fabric is stored in a storage device. The spliced fabric is sequentially passed through a treatment tank containing a treatment liquid, a fixed amount of the treatment liquid is sampled, and the concentration of the treatment liquid is determined by titration. On the other hand, by detecting seams between fabrics, a change in the type of fabric passing through the processing tank is detected, and the concentration of the processing liquid determined for this fabric is determined from the storage device. The concentration of the processing liquid is determined.
The undiluted solution or diluted solution of the processing solution is added to and mixed with the processing solution in the processing tank so that the concentration is maintained.

This adjustment operation is performed successively as the fabric passes through the treatment tank, and the concentration of the treatment liquid is continuously adjusted.

Next, the configuration of an automatic processing liquid adjusting device used to carry out the method of the present invention will be explained with reference to FIG.

Reference numeral 1 denotes a processing tank containing a processing solution used for scouring, bleaching, etc. of fabrics, and 2 indicates a conveying device that sequentially conveys the fabrics to be treated, which have been continuously spliced, into the processing 1f')1. 3 is a seam detection device that detects seams between fabrics.

4 is a processing order determining means for determining the processing order of each fabric based on the concentration of the processing liquid determined for each fabric, and 5 is a processing order determining means for storing the concentration of the processing liquid necessary for the treatment for each type of fabric. It is a storage device.

Reference numeral 6 represents a sampling means for collecting a fixed amount of the processing liquid in the processing tank, and 7 represents a concentration detection means for determining the concentration of the collected processing liquid by a titration method. Reference numeral 8 denotes a concentration adjusting means for supplying the undiluted solution or diluted solution of the processing solution to the processing tank.

Reference numeral 9 denotes a control means that performs the following operations. Seam detection device @
Based on the signal from 3, the switching of the type of fabric passing through the processing tank 1 is detected, and the concentration of the processing liquid determined for the fabric being processed is determined by referring to the memory bag M5. Based on the concentration of the treatment liquid detected by 7,
A command is given to the concentration adjusting means 8 to add and mix the undiluted solution or diluted solution to the processing solution in the processing tank 1 so that the concentration in the processing tank 1 becomes equal to a predetermined concentration.

[Function] According to the method and apparatus of the present invention, the processing order of the fabrics is determined based on the concentration of the processing liquid determined for each fabric, and the plurality of fabrics connected in this order are treated with the processing liquid in the processing tank. They are sent one after another.

A fixed amount of the treatment liquid in the treatment tank is sampled and its concentration is detected by titration. On the other hand, the concentration of the treatment liquid determined for each piece of fabric is stored in a storage device, and the type of fabric in the treatment tank can be determined by detecting the seams between the pieces of fabric. The concentration of the treatment liquid determined for this fabric is determined by referring to the storage device. The undiluted solution or diluted solution is added to and mixed with the treatment liquid so that the concentration of the treatment liquid in the treatment tank is equal to the concentration determined for the fabric in the treatment tank.

In this way, the concentration of the treatment liquid in the treatment tank is maintained at a constant concentration, and when the next seam is detected, Ila of the treatment liquid in the treatment tank is adjusted to the concentration determined for the next fabric, Maintained at a constant concentration.

In particular, the respective treatment solution concentrations determined for each fabric may become progressively larger or smaller.
By determining the order in which the fabrics are processed, the change in density is small when the type of fabric being processed is changed, the time required to reach a predetermined density is shortened, and the fabric conveyance speed can be increased.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an automatic adjustment device for processing liquids used for scouring, bleaching, etc. of fabrics. Here, a case is shown in which this apparatus is used for scouring fabric, and a treatment tank 1 contains an aqueous solution of caustic soda, NaOH. The conveying device 2 consists of a plurality of rollers 21 that are rotationally driven by an electric motor, and the long fabric a is sequentially conveyed into the processing tank 1 by this. In this way, the fabric to be treated is impregnated with an aqueous caustic soda solution. Processing tank 1 has auxiliary tank 1
1 is connected, and a pipe line is connected so that the caustic soda aqueous solution in the processing tank 1 is circulated between the processing tank 1 and the auxiliary tank 11 by a pump 12.

A seam detection device 3 for detecting seams of different types of fabrics that are joined together is disposed near the conveyor &112. In this embodiment, aluminum foil 31 is attached to the seam of the fabric, and the aluminum foil 31 is detected by a seam detection device 3 consisting of a reflective proximity switch (see FIG. 6). Furthermore, a tachometer 22 is attached to one of the rollers 21 of the conveying device 2 to measure its rotational speed.

Further, the pipe line from the auxiliary tank 11 is led to a sampling means 6 for sampling the processing liquid. The sampling means 6 consists of a titration stirring tank 61 and a sampling constant pulse pump 62, and by the operation of the quantitative pulse pump 62, caustic soda in the auxiliary tank 11 is appropriately collected into the stirring tank 61.

In addition, this stirring a61 includes water W! The water in the tank 71 is supplied by the operation of the metering pulse pump 72, and the sulfuric acid H2804 in the neutralization liquid tank 73 is supplied by the operation of the metering pulse pump 74. These quantitative pulse bombs 773.74Ltl section 91 are activated by the signal 1317). Furthermore, a concentration sensor 75 is disposed within the stirring tank 61. This concentration sensor 75 is a sensor that detects a neutralization point by utilizing the fact that when an acid or alkali aqueous solution is completely neutralized, the conductivity of the aqueous solution is extremely reduced. These water tank 71, neutralization liquid tank 73, fixed rice pulse pump 72.74. The concentration sensor 75 and the control calculation section 91 constitute the concentration detection means 7, and the concentration is detected in the following manner. First, the caustic soda collected in the stirring tank 61 is diluted with water, and a sulfuric acid aqueous solution is gradually added.

sulfuric acid added until the neutralization point is reached.
The concentration before neutralization is calculated by the control calculation unit 91 from the amount of caustic soda sampled and the dilution rate.

In addition, the processing tank 1, the auxiliary tank 11, and the stirring tank 61 include:
A discharge valve 13.14.63 is provided in each case.

On the other hand, in the [HI11] diluent W! The water in 81 is supplied by the operation of the metering pulse pump 82, and the raw solution of caustic soda, that is, the highly concentrated aqueous solution of caustic soda, in the processing liquid tank 83 is supplied by the operation of the metering pulse pump 84. These are the density adjustment means 8
It consists of These metering pulse pumps 82.84
is also controlled by the control calculation section 91. Roughly, inside this processing tank 1, there is an auxiliary agent eF! Auxiliary agents such as surfactants in 85 are supplied by a metering pulse pump 86.

The processing order determining means 4 consists of a microcomputer 41, a keyboard 42, and a CRT display 43. When conditions such as the concentration of the processing liquid and the width of the fabric determined for each fabric are input from the keyboard 42 to the microcomputer 41, the processing order is determined based on the input conditions. The order in which the fabrics are processed is determined and the order is displayed on the CRT display 43. The worker looks at this display and joins multiple types of fabric in that order.

The processing order of the fabric determined by the processing order determining means 4 and each concentration of the processing liquid used for the processing are input to a storage device 5 such as a RAM, a magnetic disk, a magnetic tape, etc., and are stored in the above-mentioned order. ing.

Reference numeral 91 denotes a control calculation section consisting of a microcomputer, which refers to the storage device 5 based on signals from the seam detection device 3, the concentration detection means 7, and the tachometer 22, and controls the metering pulse pumps 82, 84, . Send a signal to 86,
It also controls the quantitative pulse pumps 62, 72, and 74 of the sampling means 6 and the concentration adjusting means 7, and mainly constitutes the control means 9. The amount of time these metering pulse pumps are operated is constantly counted, and the amount of water, caustic soda, etc. to be supplied is determined by this. Reference numeral 92 denotes a display device such as a C'RT display that displays the concentration of the caustic soda aqueous solution in the processing tank 1 determined by the concentration detection means 7.

Next, the procedure for determining the processing order of the fabrics by the processing order determining means 4 will be explained using the flowchart of FIG. 3.

■ First, the name of the fabric ordered, its width and length,
Processing instructions such as basis weight (weight per unit area), treatment process, concentration of treatment liquid used in the treatment, and input port for the treatment process are input into the microcomputer 41 using the keyboard 42 .

(2) Then, an inquiry is displayed on the CRT display 43 as to whether or not there is fabric to be processed in stock. if,
If the item is out of stock, it will be placed on backorder.

■ If there is stock, the automatic adjustment device to be used is selected in step 7 depending on the processing content.

■ Next, the specified input ports for each fabric are checked, and the fabrics are separated by input port.

■ Fabrics from the same input port assigned to the same machine are further divided into the same widths, that is, narrow width, medium width, and wide width. This is based on the fact that when the width of the fabric changes, the settings of the device that holds the fabric must be changed.

■ Sorting fabrics separated by the same width into descending or increasing density.

(2) The processing order determined in this way is displayed on the CR display 43.

As shown in Fig. 4, narrow width, medium width,
Processing proceeds in a cycle of wide width, medium width, and narrow width, and within the same width, processing is performed such that the concentration of the processing liquid gradually increases from low to high.

By carrying out the process in the above-described cycle, the movement width of the holding section of the fabric holding device can be reduced. Also,
By performing the processing in the order in which the concentration gradually increases or in the order in which the concentration decreases, the range of adjustment of the processing liquid is small, the adjustment error is reduced, and the adjustment time is shortened.

The operator joins the fabrics to be processed in the order displayed on the CRT display 43.

The operation of the control calculation section 91 will be explained with reference to the flowchart in FIG.

First, initialize to N-1, step ■), step ■
Then, referring to the storage device 5, the processing liquid concentration K(1) determined for the first connected fabric is determined. Next, in step (2), it is determined whether the seam 31 between the two fabrics is detected by the seam detection device 3, and the seam 3
If 1 is not detected, proceed to step (2).

If a seam 31 is detected, it is set as N-N+1 in step (2), and the processing liquid concentration K (N) determined for the next spliced fabric is obtained from the storage device 5 in step (2), and then the process proceeds to step (2). .

In step (2), the quantitative pulse pump 62 for collecting the treated liquid is operated to collect a certain amount of the caustic soda aqueous solution from the auxiliary tank 11 into the stirring tank 61. In step 2, first, the metering pulse pump 72 is operated, water is supplied from the water tank 71 to the stirring tank 61, and the caustic soda aqueous solution in the stirring tank 61 is diluted to a constant ratio. Then, the metering pulse pump 74 is operated to gradually supply sulfuric acid from the neutralization tank 73 to the stirring tank 61. As a result, when the caustic soda in the stirring tank 61 is completely neutralized and the concentration sensor 75 reacts,
From the amount of caustic soda aqueous solution collected, the amount of water added for dilution, and the amount of sulfuric acid added until reaching the neutralization point,
The concentration of the collected caustic soda aqueous solution, that is, the concentration C of the caustic soda aqueous solution in the treatment tank 1 is calculated.

Next, step (2) compares the concentration C in the treatment tank 1 with the concentration K (N) of the treatment liquid determined for the fabric.
If they are equal, the process returns to step (3) and the same operation is repeated. In step (2), if the concentration C in the processing tank 1 is lower than the predetermined concentration K (N), the process proceeds to step (2). The control calculation unit 91 performs processing I! From the concentration C in 1 and the determined concentration K (N), the amount of undiluted caustic soda that should be added in order for these two to become equal is calculated, and a signal is sent to the metering pulse pump 84 to process a predetermined amount of undiluted caustic soda. The liquid is supplied from the liquid tank 83 to the processing tank 1, the process returns to step (2), and the same operations as above are repeated. In step (2), the concentration C in the treatment tank 1 is determined to be a concentration K
(N), proceed to step 11.

The control calculation unit 91 controls l! in the processing tank 1! From laC and the determined concentration K (N), calculate the amount of water that should be added in order for these two to become equal, send a signal to the metering pulse pump 82, and send a predetermined amount of water from the dilution liquid tank 81 to the processing tank 1. The process returns to step (3), and the same operations as above are repeated.

In addition, since the auxiliary agent in the processing tank 1 is carried out of the processing tank 1 by the cloth, the control calculation section 91 controls the transport bag! ! The amount of auxiliary agent carried out of the processing tank by the fabric is calculated from the rotational speed of the roller 21 of No. 2 and the basis weight of the fabric, that is, Ill per unit area, and the amount of auxiliary agent that is carried out by the fabric is pumped into the metering pulse pump 86. It is operated to supply the auxiliary agent from the auxiliary tank 85 to the processing tank 1.

Figure 7 shows a modified example of the seam detection device @3, in which a pair of rollers 32 for thickness detection sandwich the fabric from both sides, and the seam between the two fabrics is detected at a thicker part. The seam is detected by increasing the distance of this roller 32@.

Note that even when a large amount of fabric is processed using a plurality of automatic adjustment devices, only one processing order determining means can be provided and used in common.

In this embodiment, the case is shown in which this device is used for scouring fabrics, but when used for bleaching, the processing solution in the processing tank 1 is mixed with a bleaching agent such as hypozinc, chlorine, sodium chloride, hydrogen peroxide, bleaching powder, etc. You can change it to Further, in this case, the concentration of the treated liquid is determined by redox titration method by replacing the neutralizing agent in the neutralizing liquid tank with an oxidizing agent or a reducing agent.

As described above, when the concentration of the processing liquid in the processing tank 1 is maintained at a constant concentration and the next seam is detected, the processing 3111
The treatment liquid IIa in the fabric is adjusted to a predetermined concentration for the next fabric, and is kept at a constant concentration until the next seam is detected.

Note that the automatic adjustment device of the present invention can also be used in a carpet washing process by using a detergent as the treatment liquid.

[Effects of the Invention] According to the method of the present invention, while continuously adjusting the concentration of the treatment liquid used for scouring, bleaching, etc. of the fabric to IIa determined for each fabric, Since the treatment can be carried out continuously, many fabrics with different treatment densities can be treated in a short time, and even treatment can be achieved regardless of the skill of the operator. In particular, if the fabrics are treated in order of increasing or decreasing concentration, the time required for adjusting the treatment liquid is shortened and the treatment efficiency is further improved.

Furthermore, the present invention! By using the 111I straightening device, processing of a large number of fabrics can be carried out quickly, accurately and automatically, and the labor of the operator is not required.

[Brief explanation of drawings]

Fig. 1 is a claim correspondence diagram showing the configuration of the device of the present invention, Fig. 2 is a configuration diagram showing an embodiment of the same device, and Fig. 3 is a diagram showing the configuration of the device according to the present invention.
FIG. 4 is a flowchart showing the procedure for determining the processing order; FIG. 4 is an explanation showing the fabric processing cycle; FIG. 5 is a flow chart showing the operation of the control calculation section; FIG. 6 is a schematic diagram showing the seam detection device , FIG. 7 is a schematic diagram showing a modification of the seam detection device. Explanation of symbols 1... Processing tank 2... Transport device 3... Seam detection device t 4... Processing order determining means 5... Storage device f16... Collection means 7... Concentration detection means 8...IIF! 1: GL adjustment means 9...Patent applicant for control means Kanebo Co., Ltd. Representative Patent attorney Tsuta 1) Shoko et al. 1 Fu
Figure 1 Figure 3 Figure 4

Claims (1)

[Scope of Claims] 1. The above-mentioned treatment of multiple types of fabrics while continuously adjusting the concentration of the treatment liquid used for scouring, bleaching, etc. of multiple types of fabrics to a concentration determined for each fabric. The method comprises: determining a processing order for the plurality of types of fabrics based on a concentration of a processing liquid determined for each fabric, and continuously connecting these fabrics in the above order. At the same time, the concentration determined for each fabric is stored in a storage device, and the combined fabrics are sequentially passed through the processing tank containing the processing liquid, and a fixed amount of the processing liquid is collected. The concentration of this treatment liquid is determined by a titration method, and on the other hand, by detecting the seams between fabrics, it is possible to detect a change in the type of fabric passing through the treatment tank, and to determine the concentration of the treatment liquid determined for this fabric. is obtained from the storage device, and the undiluted solution or diluted solution of the processing solution is added to and mixed with the processing solution in the processing tank so that the concentration of the processing solution reaches a predetermined concentration, and the concentration of the processing solution is continuously adjusted. A method for continuously adjusting treatment solutions for fabric scouring, bleaching, etc. 2. a) A processing tank containing a processing solution used for scouring, bleaching, etc. of fabrics, and b) A processing order determining means for determining the processing order of each fabric based on the concentration of the processing solution determined for each fabric. and c) a storage device that stores the concentration of treatment liquid necessary for treatment for each type of fabric; and d) placing the fabrics that have been successively spliced together in the order determined by the treatment order determining means into the treatment tank. e) a seam detection device that detects seams between fabrics; f) sampling means that collects a certain amount of the treatment liquid in the treatment tank; and g) a titration method to measure the concentration of the collected treatment liquid. h) concentration adjusting means for supplying the undiluted solution or diluted solution to the processing tank; and i) a means for detecting the concentration of the fabric passing through the processing tank based on the signal from the seam detection device. The replacement is detected, the concentration of the treatment liquid determined for the fabric is determined by referring to the storage device, and the concentration of the treatment liquid in the treatment tank is determined based on the concentration of the treatment liquid detected by the concentration detection means. automatic adjustment of processing solutions for fabric scouring, bleaching, etc., comprising: a control means for giving a command to the concentration adjusting means to add and mix the undiluted solution or diluted solution to the processing solution in the processing tank so that the concentration is equal to that of the processing solution; Device. 3. The method of scouring, bleaching, etc. of the fabric as set forth in claim 1, characterized in that the processing order of the fabric is determined so that the respective treatment concentrations are gradually increased or decreased. Continuous adjustment method of processing liquid. 4. The fabric according to claim 2, wherein the processing order determining means determines the processing order so that the treatment concentration determined for each fabric gradually increases or decreases. Automatic adjustment equipment for processing liquids for scouring, bleaching, etc.