JPH0320508B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] 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 therein. [Prior Art] Generally, jet dyeing, in which an object to be dyed is dyed while being circulated and moved by a circulating flow of dye liquor, is generally carried out using a jet dyeing apparatus as shown in FIG. The liquid jet dyeing apparatus 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 bath 1 having a circulation path for the dye solution to circulate through the circulation path of the dye bath 1. A dye liquid discharge nozzle 4 that discharges the dye liquid into the reflux path, a nozzle pressure adjustment valve 4' that adjusts the discharge amount, and a nozzle pressure regulating valve 4' that is formed in a part of the dye liquid reflux path to discharge the dye liquid and the dyed object 2. A retention part 5 for retaining the dye liquor, a dye liquor suction port 6, 7 provided in the retention part 5, and a dye liquor that sucks in the dye liquor as appropriate from the dye liquor suction ports 6, 7 and discharges it from the dye liquor discharge nozzle 4. Equipped with circulation aids. In addition, 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. Suction of the dye liquor in the dye liquor circulation means is performed by a dye liquor circulation pump 11 via dye liquor suction amount adjustment valves 9 and 10 provided near the dye liquor suction ports 6 and 7, respectively. . Staining using the jet dyeing apparatus described above is performed in the following procedure. That is, first, dyeing bath 1
Open the opening/closing door 12 provided at one end and remove the object 2.
is introduced into the dyeing bath 1 and the circulation path is made to go around it via the reel 3, and then the ends of the dyed object 2 are sewn together to make it 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 force of the dye liquid and the action of the reel 3, and after being sufficiently retained in the retention section 5, the object 2 to be dyed is sequentially moved in the direction of the arrow. move. 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, It is adjusted by increasing or decreasing the amount of dye liquid sucked from 7. Here, the above discharge pressure is determined by the opening degree of the nozzle pressure regulating valve 4',
It varies depending on the shape of the dye liquid discharge nozzle 4, etc., and is usually determined to be an optimum value depending on the material of the object 2 to be dyed. The increase or decrease in the dye liquid suction amount is determined by the opening degree of the dye liquid suction amount adjusting valves 9 and 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, that is, the opening degree of the nozzle pressure regulating valve 4', are usually fixed during dyeing.
Appropriate liquid flow conditions are created by manually adjusting the opening degrees of the valves 9 and 10 while checking the retention status of the dyed material 2. [Problems to be Solved by the Invention] 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. That is, while the temperature of the dye liquor is low, the dyed object 2 contains air bubbles and easily floats from the dye liquor, so it easily moves through the retention section 5 and is concentrated on the downstream side A of the retention section 5. Therefore, it is necessary to tighten the dye liquid suction amount regulating valve 9 on the downstream side more than on the upstream side B to suppress the movement of the dyed object 2. Conversely, when the temperature of the dye liquor increases, the dyed object 2 sinks into the dye liquor, becomes difficult to move within the retention section 5, and is concentrated on the upstream side B of the retention section 5. Therefore, the dye liquid suction amount adjustment valve 9 on the downstream side is opened wider than that on the upstream side to
It is necessary to subtract the object to be dyed 2 from . If this adjustment does not go well, the dyed objects 2 move back and forth in the retention section 5, resulting in them becoming entangled, or, for example, the dyed objects 2 are shifted too far to the front and transfer to the reel 3 while overlapping. The fabric may become entangled with the reel 3 or become clogged between the reel 3 and the dye liquid discharge nozzle 4. Also,
At high temperatures, if the object 2 to be dyed is too close to the rear, fabric clogging or uneven pressing may occur at the rear. For this reason,
Each time, it is necessary to stop the operation of the equipment and loosen the tangles of the dyed material. 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 the Problems] In order to achieve the above-mentioned object, the present invention is a jet dyeing method in which an object to be dyed is circulated and dyed by a circulating flow of a dye solution, and is dyed while being retained in the middle. hand,
A dye liquid suction port is provided on each of the upstream side and the downstream side of the retention area of the dyed material, and an automatic dye liquid suction amount adjustment means is provided for automatically adjusting the dye liquid suction amount at each of the dye liquid suction ports, By this dye liquid suction amount automatic adjustment means, when the retention of the dyed material is biased toward the upstream side of the retention section, the dye liquid suction amount from the dye liquid suction port on the upstream side is adjusted to the amount of dye liquid suction from the dye liquid suction port on the downstream side. The suction amount of dye liquid from the suction port on the upstream side is suppressed to encourage the progress of the dyed material to the downstream side, and when the retention of the dyed material is biased toward the downstream side of the retention section, the amount of dye liquid sucked from the dye liquid suction port on the upstream side is suppressed. By increasing the amount of dye liquid sucked from the dye liquid suction port on the downstream side and delaying the progress of the dyed object downstream, the dyed object is made to stay evenly in the retention area. The first aspect is a jet dyeing method, and the present invention includes a dyeing bath having a circulation path for dye liquid, and 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 dyeing bath. , a retention part formed in a part of the circulation path of the dye liquor and for retaining the dye liquor and the dyed object, a dye liquor suction port provided on each of the upstream and downstream sides of the retention part, and each of the above dye liquors. A liquid jet dyeing device comprising a dye liquid circulation pump that sucks dye liquid from the suction port as appropriate and discharges it from the dye liquid discharge nozzle, the dye liquid suction piping extending from each of the dye liquid suction ports to the dye liquid circulation pump. If the retention of the dyed material is biased toward the upstream side of the retention section, the opening degree of the dye liquid suction valve on the upstream side is larger than the opening degree of the dye liquid suction valve on the downstream side. The opening degree of each valve is controlled so that the retention of the dyed material is biased toward the downstream side of the retention area, so that the opening degree of the dye liquid suction valve on the upstream side becomes smaller than the opening degree of the dye liquid suction valve on the downstream side. The second aspect is that the valve opening/closing automatic adjustment means is provided for controlling the opening degree of each valve so that the opening degree is greater than the opening degree. [Function] That is, the present inventors strongly felt the need to automate the adjustment of the retention condition, which had conventionally been done manually, and conducted a series of studies. As a result, the retention state of the dyed material in the retention area is predicted according to the sequence, and based on this prediction, if there is a bias in retention on the upstream or downstream side of the retention area, the dye solution is applied to eliminate this bias. By automatically adjusting the opening of the dye liquid suction amount control valve to create a flow, the retention of the dyed material will be automatically controlled and dyeing can be carried out efficiently without any trouble. This discovery led to the present invention. 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 symbols as in Fig. 4. . However, in order to be able to finely adjust the degree of retention of the dyed object 2 in the retention section 5,
Dye liquid suction ports 15, 16, and 17 are provided at three locations, downstream, central, and upstream, respectively, and dye liquid suction amount adjustment valves 18 are provided near each suction port 15, 16, and 17, respectively. ,19,2
0 is attached and communicates with the dye liquid circulation pump 11. The dye liquid suction amount regulating valves 18, 19, and 20 are all connected to a valve opening/closing automatic regulating means 21, which will be described below, and the valves are adjusted individually according to instructions from the valve opening/closing automatic regulating means 21. Opening and closing are automatically adjusted. Note that 21a is a data input means for inputting data to the valve opening/closing automatic adjustment means 21;
Reference numeral b denotes a temporal change reading means for reading temporal changes in the dyeing bath 1, such as changes in the temperature of the dye solution, and inputting the read signal to the valve opening/closing automatic adjustment means 21. As shown in FIG. 2, the valve opening/closing automatic adjustment means 21 includes an input circuit 22 that receives data input from a data input means 21a for inputting data;
A reading signal input circuit 23 receives a reading signal from a temporal change reading means 21b for reading temporal changes in the dyeing bath 1, and a reading signal input circuit 23 stores and logically operates the signals from the input circuit 22 and the reading signal input circuit 23. It is comprised of a memory/arithmetic circuit 24 that outputs a command signal, and a valve open/close signal output circuit 25 that converts the command signal from the memory/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 automatic adjustment 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 dyed material Type of dyeing solution Dyeing bath temperature Nozzle discharge pressure Reel speed And, when these factors are combined, it is necessary to make the dyed material 2 biased toward the upstream side of the retention section 5. If the conditions are such that the suction amount of the dye liquid on the upstream side is kept lower than that on the downstream side, a flow of the dye liquid is created that strongly sends the dyed object 2 downstream, and the retention part 5 is
If conditions are such that the dyed material 2 accumulates unevenly on the downstream side, the amount of dye liquid sucked on the upstream side is larger than that on the downstream side, so that the dyed material 2 is held back on the upstream side. The opening degree of each dye liquid suction amount adjustment valve 18, 19, 20 is determined to create a flow of liquid. The data obtained in this way is input in advance to the memory calculation circuit 24 of the valve opening/closing automatic regulating means 21 and stored, and the dye liquid suction amount regulating valves 18, 19 are adjusted according to the actual situation in the retention section 5. ,20
A predetermined program is stored in the storage arithmetic circuit so as to output a command instructing the opening degree of the opening. 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 change over time The memory calculation circuit 24 of the valve opening/closing automatic adjustment means 21 sequentially analyzes the data input from the reading means 21b every moment and outputs a valve opening/closing signal to automatically adjust the opening degree of the valve.
An appropriate liquid flow corresponding to changes in the physical properties of the dyed object 2 and the dye solution is automatically created, and uniform alignment of the dyed object 2 in the retention section 5 and smooth movement of the cloth are performed. Therefore, the dyeing operation proceeds smoothly without the troubles that occur in the conventional method. This is the greatest feature of the present invention. By the way, some jet dyeing apparatuses are of a type that are equipped with a sequence control device that programmatically controls the temperature of the dye solution in the dyeing bath 1. When the present invention is applied to this type, the temperature control device should incorporate an automatic valve opening/closing control means 21 that predicts changes in the physical properties of the object 2 to be dyed and the dye liquid and adjusts the valve opening/closing. is suitable. In addition, in the liquid jet dyeing apparatus described above, in order to create an optimum liquid flow, the dye liquid suction amount adjustment valve 18,
19 and 20 are automatically adjusted. At the same time, an inverter capable of switching and converting the speed is attached to the pump drive motor (not shown) of the dye liquid circulation pump 11, and the frequency of the inverter is controlled by a valve. The pump suction force may be adjusted by automatic control in the same manner as the opening/closing adjustment to help create an optimal liquid flow. In addition, as a means for adjusting the pump suction force of the dye liquid circulation pump 11, in addition to the method of installing an inverter and controlling the frequency as described above, a valve may be installed on the pump suction side of the dye liquid circulation pump 11. The opening degree of the lever valve may be automatically controlled. Furthermore, in these devices, 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 to help adjust the moving speed of the dyed object 2 that is staying and moving. good. 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, dye liquid suction amount adjustment valve 1
The adjustment of 8', 19', and 20' is more difficult than that of the one-way circulation type, and it can be said that the merits of automation instead of manual operation are extremely large. Note that 3' and 4' are a reel and a dye liquid discharge nozzle, respectively, which are used during reversal. Next, examples will be described in detail. Examples 1 to 4 Jet dyeing was actually carried out using the jet dyeing apparatus shown in FIG. Four types of objects shown in the table below were prepared as dyed objects 2, and scouring, dyeing, and washing with water were performed according to the dyeing conditions shown below. In addition, before performing each of the above examples, preliminary experiments were conducted under the same conditions as in the examples, and based on the results and past experience, the dye solution temperature (scouring solution, The valve opening/closing automatic regulating means 21 is programmed and stored in advance so that the opening and closing of the dye liquor suction amount regulating valves 18, 19, and 20 are individually adjusted according to the amount of water (including washing liquid) as shown in the table below. I let it happen.

【table】

〔Effect of the invention〕

As described above, according to the jet dyeing method of the present invention, the suction amount of dye liquid can be automatically adjusted separately on the upstream side and the downstream side in the retention section.
Optimal liquid flow that does not cause problems such as cloth clogging,
It is now maintained at all times, and staining can be carried out efficiently. Furthermore, the above-mentioned optimal liquid flow is obtained by automatically opening and closing the dye liquid suction amount adjustment valve based on sequence control, so there is no need for a human being to be constantly present next to 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]

1 and 2 are block diagrams of the jet dyeing device of the present invention, and FIG. 3 is an explanatory diagram of the inverted jet dyeing device.
FIG. 4 is an explanatory diagram of a conventional jet dyeing apparatus. 1... Dyeing bathtub, 2... Dyed object, 3... Reel, 4... Dye liquid discharge port, 5... Retention part, 11...
Dye liquid circulation pump, 15, 16, 17... Dye liquid suction port, 18, 19, 20... Dye liquid suction amount adjustment valve, 21... Valve opening/closing automatic adjustment means.

Claims (1)

[Scope of Claims] 1. A liquid jet dyeing method in which an object to be dyed is circulated and dyed by a flow of a circulating dye liquor, and is dyed while being retained in the middle. In addition to providing a dye liquid suction port for each,
An automatic dye liquid suction amount adjusting means is provided to automatically adjust the amount of dye liquid sucked into each of the dye liquid suction ports, and this automatic dye liquid suction amount adjusting means prevents the retention of the dyed material to the upstream side of the retention part. If it is biased, the amount of dye liquid sucked from the upstream dye liquid suction port is kept lower than the amount of dye liquid suctioned from the downstream dye liquid suction port to promote the progress of the dyed material to the downstream side. If the retention of the dyed material is biased toward the downstream side of the retention section, the amount of dye solution sucked from the dye solution suction port on the upstream side is made larger than the amount of dye solution sucked from the dye solution suction port on the downstream side. A jet dyeing method characterized by slowing down the progress of the dye to the downstream side. 2. A dye bath having a circulation path for the dye liquor, a dye solution discharge nozzle that discharges the dye solution into the circulation path so that the dye solution circulates through the circulation path of the dye bath, and a part of the circulation path for the dye solution. A retention part is formed in which the dye liquor and the object to be dyed are retained, a dye liquor suction port is provided on the upstream and downstream sides of the retention part, and the dye liquor is sucked in as appropriate from each of the dye liquor suction ports and the dye is dyed. A liquid dyeing apparatus comprising a dye liquid circulation pump that discharges liquid from a liquid discharge nozzle, and a dye liquid suction amount adjustment valve provided on each dye liquid suction pipe leading from each dye liquid suction port to the dye liquid circulation pump; If the retention of the dyed material is biased toward the upstream side of the retention section, the opening degree of each valve is adjusted so that the opening degree of the dye liquid suction valve on the upstream side is smaller than the opening degree of the dye liquid suction valve on the downstream side. Under conditions where the retention of the dyed material is biased toward the downstream side of the retention section, each valve is opened so that the opening degree of the dye liquid suction valve on the upstream side is larger than the opening degree of the dye liquid suction valve on the downstream side. 1. A liquid jet dyeing device characterized by comprising: automatic valve opening/closing adjustment means set to control the temperature. 3. The optimum opening degree of each dye liquid suction valve under conditions combining the following factors is inputted in advance to the automatic valve opening/closing control means, and the opening degree of each valve is controlled based on this data. 3. The jet dyeing apparatus according to claim 2, wherein: Type of object to be dyed Type of dye solution Dyeing bath temperature Nozzle discharge pressure of dye solution discharge nozzle Feeding speed of object to be dyed