JPH03213559A - Automatic fabric speed control method and device for jet dyeing machine - Google Patents

Abstract

PURPOSE:To control the speed of a cloth within a normal cloth speed range by controlling the nozzle pressure by the control of the opening of a nozzle valve according to a cloth speed pattern and controlling a main pump with an inverter when the opening of the nozzle valve exceeds the extreme limit. CONSTITUTION:The speed of a cloth measured by a cloth speed detecting part 4 is compared with a cloth speed value preset by a cloth speed setting part 10. When the measured cloth speed exceeds the allowable range over a prescribed period, the opening of a nozzle valve 6 is controlled. If the measured value does not reach the allowable range of the preset cloth speed even by controlling the opening of the nozzle valve to the extreme limit, the rotational speed of a main pump 7 is controlled by an inverter.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a jet dyeing machine equipped with one treatment tank or two or more treatment tanks.

Conventional technology Conventionally, in jet dyeing machines, in order to control the fabric speed, which affects the dyeing conditions, a nozzle valve is installed in front of the jet nozzle section, and the operator controls the nozzle valve while watching the nozzle pressure gauge and speed meter. It depends on how you adjust the opening. Furthermore, Japanese Patent Publication No. 1-49 describes a method of controlling the jet nozzle pressure by adjusting or decreasing the rotation speed of the pump according to the difference between the actual value of the cloth speed and the set value, regardless of the opening degree of the nozzle valve.
It is disclosed in Japanese Patent No. 822.

Problems to be Solved by the Invention However, in the conventional example as described above, adjusting the opening of the nozzle valve requires close operation by a skilled person who is familiar with the dyeing conditions, and even then, the adjustment of the opening of the nozzle valve requires close operation by a skilled person who is familiar with the dyeing conditions. Adjustment has been considered impossible.

In addition, in the case of a liquid jet dyeing machine with multiple processing tanks, the control method of increasing or decreasing the rotation speed of the pump according to the difference between the measured value of cloth speed such as nozzle pressure and the set value is also important. There are subtle differences in mechanical conditions due to nozzle types, gap settings, suction valve settings, surface conditions inside the processing tank, and machining conditions in the circulation path, and there are differences in processing between processing tanks. There was a problem in that it was difficult to make the cloth speed in all treatment tanks the same.

In order to achieve uniform dyeing using conventional dyeing methods, it is necessary to maintain a temperature range (e.g. 80°C to
(up to 130°C), a method has been adopted in which the temperature rise curve is made gentler while keeping the cloth speed constant. However, such a method has a limit in reducing the time required for the dyeing process.

An object of the present invention is to have a main pump having a nozzle valve that can automatically adjust the opening and an inverter for controlling the rotation speed, and to automatically and subtly adjust the difference between the actual measured cloth speed and the set cloth speed. To provide an automatic fabric speed control method and device that can achieve uniform dyeing and time reduction by controlling and uniformizing the fabric speed between one processing tank or two or more processing tanks. At the same time, the aim is to shorten the overall dyeing processing time.

Means for Solving the Problems In order to achieve the above-mentioned objects, the present invention first provides a method of the present invention, in which dyeing is performed in advance in a jet dyeing machine according to the type of material to be dyed, basis weight, dye, processing temperature, and other dyeing conditions. means for increasing or decreasing the nozzle valve opening when the actual cloth speed value exceeds the allowable range of the cloth speed setting value for a predetermined period of time or more;
Even if this nozzle valve opening degree is adjusted to the limit value, if the actual fabric speed value still exceeds the allowable range of the fabric speed setting value, a means for controlling the rotation speed of the main pump with an inverter, and An automatic fabric speed control method for jet dyeing machines was developed to control the fabric speed within the normal fabric speed range.

While the first invention deals with one treatment tank, in the case of two or more multiple treatment tanks, the second invention method includes - or more multiple treatments in order to prevent differences in dyeing effect between each treatment tank. In a jet dyeing machine equipped with a tank, the allowable range of the cloth speed setting value set in advance according to the type of material to be dyed, basis weight, base material, processing temperature, and other dyeing conditions is determined by actual cloth speed measurement in one of the processing tanks. If the value exceeds the set value for a predetermined period of time, even if you use means to increase or decrease the nozzle valve opening and adjust the nozzle valve opening of this treatment tank to the limit value, the actual cloth speed value still exceeds the cloth speed setting value. means for controlling the rotational speed of the main pump using an inverter when the number of openings of the nozzle valves of other processing tanks exceeds the allowable range and the opening degree of the nozzle valve of other processing tanks is not at the limit value; An automatic cloth speed control method in a liquid jet dyeing machine equipped with two or more processing tanks is provided, which is characterized by automatically controlling the cloth speed so that it is within the normal cloth speed range and does not cause a large difference.

A third invention is an apparatus for carrying out the method of the first invention, in which a jet dyeing machine includes a main pump whose rotation speed is controlled by an inverter, a cloth speed detection section, a nozzle valve whose opening degree can be automatically adjusted,
Input the preset cloth speed settings according to the type of material to be dyed, date, base material, processing temperature, and other dyeing conditions.
2. A control device is provided which is connected to each of the sections mentioned above and sends control signals, and the control device uses the signal from the cloth speed detection section to adjust the actual cloth speed measurement value to within a predetermined allowable range of the cloth speed setting value for a predetermined period of time. -, a signal is issued to increase or decrease the nozzle valve opening, and only when the actual measured cloth speed still exceeds the allowable range of the cloth speed set value even after adjusting the nozzle valve opening, the main pump This is an automatic fabric speed control device for a liquid jet dyeing machine that outputs a signal to control the rotation speed of the machine using an inverter.

The fourth invention deals with the case where the third invention has one treatment tank, but in the case of two or more multiple treatment tanks, adjustment is made between each treatment tank, and the fourth invention is a liquid with two or more multiple treatment tanks. In a drift dyeing machine, there is one main pump whose rotation speed is controlled by an inverter, a fabric speed detection unit in each processing tank, a nozzle valve that can automatically adjust the opening, and the type of dyed material, basis weight, base material, and processing temperature. In addition, a control device is provided which inputs cloth speed setting values set in advance according to the dyeing conditions, and is connected to each of the above sections and sends control signals. If the actual cloth speed value exceeds the allowable range of the preset cloth speed setting value for a predetermined period of time or more, a signal is issued to increase or decrease the nozzle valve opening, and even if the nozzle valve opening is adjusted, When the actual cloth speed value exceeds the allowable range of the cloth speed setting value and the nozzle valve opening of other treatment tanks is not at the limit value, a signal is issued to control the rotation speed of the main pump using an inverter. This is an automatic cloth speed control device for a jet dyeing machine equipped with two or more processing tanks.

In the first aspect of the present invention, the cloth speed actual value is measured every moment by the cloth speed detection section, and compared with the cloth speed set value, and if the permissible range is exceeded for more than a predetermined time, the nozzle valve opening degree is first adjusted. In the case of a liquid jet dyeing machine, the measured value of cloth speed constantly repeats slight fluctuations because the object to be dyed moves along with the liquid flow.
Instead of constantly responding to this variation, the nozzle pressure is adjusted so that the actual cloth speed value exceeds the allowable range of the cloth speed setting value for a predetermined period of time by making corrections to bring it back within the range.

The preset cloth speed setting values and their allowable ranges have been set based on the accumulation and analysis of data based on years of experience, depending on the type of material to be dyed, basis weight, base material, processing temperature, etc., and within these ranges. It is possible to carry out staining under optimal conditions as long as the

There is a limit to the correction by adjusting the nozzle valve opening, and depending on whether the nozzle valve opening reaches the upper limit or the lower limit, the actual cloth speed value may still fall within the allowable range of the cloth speed setting (normal cloth speed range). The main pump's rotational speed is controlled by the inverter only when the As mentioned above, the nozzle pressure is first adjusted by adjusting the opening of the nozzle valve, and only if this does not fall within the allowable range, then the rotation speed of the main pump is controlled by the inverter. It is possible to automatically process within the optimum cloth speed range for the type of material to be dyed.

In the second invention, when a dyeing machine having two or more processing tanks is used, the cloth speed of each of the plural processing tanks from -Y to 10 is judged and adjusted, but first, any one of the processing tanks is When the actual cloth speed value of a tank exceeds the allowable range of the cloth speed set value for a predetermined period of time, the opening degree of the nozzle valve of that treatment tank is adjusted.

There is a limit to the correction that can be made by adjusting the nozzle valve opening, and if even after this, the actual measured cloth speed still exceeds the allowable range of the set value, it is necessary to control the rotation speed of the main pump using an impeller. However, in this case, if the nozzle valve opening of one of the remaining treatment tanks is at the lower or upper limit, the cloth speed of these other treatment tanks will change as the main pump output increases or decreases. Since there is a good chance that the speed setting value will exceed the allowable range, a fabric speed abnormality alarm is issued to notify the operator of this. Therefore, only when the nozzle valve opening is not within the limit value in the remaining processing tanks, the rotational speed control of the ten pumps is carried out by the inverter to maintain the optimal cloth speed range in each processing tank.

The third invention is a device for carrying out the method of the first invention, which includes a pump whose rotational speed is controlled by an inverter, a cloth speed detection section, a nozzle valve whose opening degree can be automatically adjusted, and which are connected to each other to send a control signal. This controller is equipped with a control device that controls the fabric speed setting value, which is set in advance depending on the material to be dyed,
It compares the actual cloth speed measurements from the cloth speed detection unit every moment, and if it exceeds the allowable range of the cloth speed setting value, it first issues a signal to adjust the nozzle valve opening, and then adjusts the nozzle valve opening. However, only when the set value exceeds the allowable range, a signal is issued to control the rotation speed of the main pump by the inverter.

The fourth invention is a liquid jet dyeing machine having two or more processing tanks, in which there is only one main pump, but the cloth speed detection unit, the nozzle valve that can automatically adjust the opening, etc. are installed in each processing tank. It is installed in Then, in the control device, if the cloth speed setting value exceeds the allowable range for a predetermined period of time based on a signal from the cloth speed detection section of any one of the processing tanks, the cloth speed adjustment for that processing tank is first performed by opening the nozzle valve. I try to do this by increasing or decreasing the degree.

However, if the actual measured cloth speed still does not exceed the allowable range of the cloth speed set value even after adjusting the nozzle valve opening, the nozzle valve openings of other processing tanks may be set to the limit value (-1- In the second step, a control signal was issued to control the rotation speed of the pump using an inverter.

EMBODIMENT OF THE INVENTION An automatic cloth speed control method and apparatus which are one embodiment will be described based on the drawings.

Fig. 1 shows a control device for a liquid jet dyeing machine having two or more processing tanks, where l is a retention tank, 2 is a transfer section, 33 is a liquid jetting section, 4 is a cloth speed detection section, and the driving reel is It was installed in the 5th section. 6 is a nozzle valve, and the r nozzle movement mJ JjJ can be adjusted. 7 is the main pump, through Chiyu -F Nba -
can be controlled. 8 is a heat exchanger, and 9 is a central information processing unit (C1' tJ ) as a control device. 10 indicates a cloth speed setting section. 11 is a fabric 3, -1 Passes from the pump 7 to the heat exchanger 8 and the nozzle valve 63, and by the treatment liquid jetted from the liquid injection section 3, the fabric 11 passes through the transfer section 2, enters the retention tank 1, and is driven. The dye reaches the liquid jetting section 3 again via the pipe 5 and is dyed by relative contact with the base material while the treatment liquid is repeatedly circulated by spraying.

A cloth speed control method during the dyeing process will be explained with reference to the dyeing flowcharts of FIGS. 1, 2, and 3, and FIGS. 4 and 5.

■ 12 is start, which starts automatic operation. Control of the set values of the nozzle valve 6 and the main pump 7 starts from initial values. This is because the operating conditions at the end of the previous automatic operation have not necessarily returned to their initial values.

Next, determine whether the operating state is the dyeing process or the washing process (
13). When proceeding to the dyeing process, after confirming the moisture level in the tank 14, cloth speed setting 15 is performed according to the temperature for dyeing, and automatic cloth speed control is entered. The optimum cloth speed setting value is determined in advance from the type of material to be dyed, area weight, base material, processing temperature, and other dyeing conditions. The normal cloth speed range, including the plus and minus four tolerance ranges, is input to the control device 9, centering on the optimum cloth speed setting value.

Figure 4 shows the nozzle pressure (V27Cm') for each opening degree of the nozzle valve.
G) and the main pump rotation speed (INV%).The shaded range is for a span-only nozzle with a nozzle diameter of 80 mm, a gap of 4 mm, 7 power, 2P-3
This shows the optimum condition range when using a 0KW motor.

Whether or not the cloth speed is within the normal cloth speed range is determined by the speed I'll constant 16. If it is within the range, the nozzle valve opening and the main pump rotational speed are not changed and continue as they are. According to cloth speed determination 16, if the cloth speed is slower or faster than the normal cloth speed range, the nozzle pressure is controlled.

Before proceeding to the nozzle valve opening adjustment step, it is determined whether the nozzle valve opening has reached the upper or lower limit.

■ If the nozzle valve opening has not reached its limit, control the nozzle pressure by adjusting the opening.

■ If the nozzle valve opening has reached its limit, the nozzle valve opening is not adjusted and the process proceeds to the step of controlling the main pump rotation speed.

■ Control of nozzle pressure is first performed by the nozzle valve (opening adjustment of an electric valve).

To adjust the opening of the nozzle valve; J “Maximum nozzle valve opening” and [
Since the "minimum nozzle valve opening degree" is set in the cloth speed pattern, there is a limit to corrections made by the nozzle valve. Therefore, when the opening degree of the nozzle valve is at the limit value, it is necessary to control the nozzle pressure using the ten-pump inverter.

In the case of two or more processing tanks, firstly, if the nozzle valve opening degree is the upper limit (to 4th N) in one processing tank A, 17
, it is determined whether the lower limit is reached in other treatment tank B (19), and if it is the lower limit (see Figure 4 B), the nozzle valve opening and main pump output are not adjusted, and the step of treatment tank B (see Figure 2) is ), and after completing all the steps for each treatment tank (Fig. 2 A-Z), determine the presence or absence of the upper limit 26 or lower limit 27 treatment tank for the nozzle valve opening, and set the upper limit treatment tank and lower limit treatment tank. Only when both occur, a fabric speed abnormality alarm 20 is issued to notify the operator.

In Fig. 4, when one treatment tank changes the main pump rotation speed from 80% to 82% from the Δ point and increases the nozzle valve opening to the Δ2 point, the nozzle pressure becomes too high and the nozzle valve opening decreases. If it drops from 80% to 78% (A,),
This is because at point B in the other treatment tank, the speed changes from 13 to [3, and there is a risk that the normal cloth speed range will be exceeded.

Normally, in jet dyeing machines, if the mechanical settings such as nozzle type, gap setting, and suction valve setting are properly made, the nozzle valve opening degree of each treatment tank should increase or decrease in the same direction. be. However, the difference in the upper and lower limit nozzle openings between the processing tanks is thought to be due to poor mechanical settings or a special operating condition abnormality. At this time, it is more than that.
1- control is not proceeded with, and an alarm is issued to notify the operator.

Therefore, the cloth speed correction control subroutine shown in FIG.
: If the other treatment tank is not limited to one door, the main pump output will be increased 21 and the cloth speed will be increased 7 . On the other hand, if the actual cloth speed value is faster than the cloth speed setting value 16, determine whether the nozzle valve opening is at the lower limit 22;
When the nozzle valve openings of other processing tanks are not at the lower limit, the nozzle valve openings are reduced 23, and when the other processing tanks are not at the upper limit, the pump output is reduced by 10 and the cloth speed is reduced.

In addition, since the actual measured value of cloth speed changes from moment to moment, if the nozzle valve opening or pump rotation speed is controlled based on the instantaneous actual measured value, stable cloth speed control cannot be achieved. Averaging processing is performed at , and control is performed such that correction is first performed when the averaged measured value is out of the allowable range for a certain period of time (see Fig. 5).

■ The actual cloth speed is constantly compared with the normal cloth speed range, and if it remains out of the same range for a certain period of time, the "nozzle opening correction" timer is activated, and when the timer is up, the nozzle valve opening is adjusted to the set value. Add repair + E.

If it continues to be out of the same range even after making the correction, make the correction every 8 times the timer goes up.

If the cloth speed does not fall within the set range even after adjusting the nozzle valve opening degree to the upper limit value or lower limit value, the control shifts to the rotation speed of the main pump.

■ Corrective action using the inverter for the main pump As we continued to make corrections using the nozzle valve described above, even one treatment tank
When the "maximum nozzle pressure value" or "minimum nozzle pressure value" is reached, and the condition continues to be outside the normal cloth speed range, the "main pump correction" timer is activated, and when the timer is up, the main pump inverter setting value is activated. Add corrections.

If you are still out of range even after making corrections, make corrections every time the timer goes up.

■ If the cloth speed continues to be outside the normal cloth speed range for a certain period of time despite corrective action being taken by the nozzle valve or the main pump inverter, an alarm will be issued by the "fabric speed control failure detection" timer.

In this case, it is determined that the automatic cloth speed control is not functioning properly due to inappropriate setting of various conditions or a special problem during operation, and the work is done to prevent further control. The person is informed.

Effects of the Invention Since the present invention has the above configuration, in the method of the first invention and the apparatus of the third invention, in a jet dyeing machine consisting of a single treatment tank, the nozzle pressure is adjusted according to the cloth speed pattern. First, it is controlled by adjusting the opening degree of the nozzle valve, and if the actual cloth speed value does not reach the cloth speed setting range, it is adjusted by inverter control of the main pump, so that it corresponds to the processing temperature during the dyeing process. By realizing fabric speed control using this method, it is possible to achieve effects such as shortening the dyeing time.

Further, in the method of the second invention and the apparatus of the fourth invention, even in a jet dyeing machine having two or more processing tanks, the nozzle pressure is first adjusted by adjusting the nozzle valve opening according to the cloth speed pattern, and The main pump is controlled overnight, taking into consideration the effect on the treatment tanks, so it is possible to operate under uniform and optimal conditions between each treatment tank, and the dyeing process is extremely quick, resulting in a coat with a nice texture. Its effects are significant, such as the ability to obtain dyed products.

[Brief explanation of drawings]

Figure 1 is a diagram showing the fabric speed control device of the present invention, Figure 2 is a
3 is a flowchart of cloth speed control, FIG. 3 is a control subroutine for correcting cloth speed, FIG. 4 is an explanatory diagram showing cloth speed patterns, and FIG. 5 is a graph showing averaging of cloth speed settings. 4... Cloth speed detection section 6... Nozzle valve 7... Main pump 9... Control device 10... Cloth speed setting section

Claims (4)

[Claims] (1) In a liquid jet dyeing machine, the actual cloth speed value exceeds the allowable range of the cloth speed setting value, which is preset according to the type of material to be dyed, basis weight, dye, processing temperature, and other dyeing conditions, for a predetermined period of time. If so, means for increasing or decreasing the nozzle valve opening;
Even if this nozzle valve opening degree is adjusted to the limit value, if the actual cloth speed value still exceeds the allowable range of the cloth speed setting value, a means for controlling the rotation speed of the main pump with an inverter, and An automatic fabric speed control method in a jet dyeing machine, characterized in that the fabric speed is controlled within a normal fabric speed range. (2) In a jet dyeing machine equipped with two or more processing tanks, the allowable range of the cloth speed setting value, which is preset according to the type of material to be dyed, basis weight, dye agent, processing temperature, and other dyeing conditions, can be set to one of the two. means for increasing or decreasing the opening degree of the nozzle valve when the actual cloth velocity value of the two treatment tanks exceeds a predetermined time period or more;
Even if the nozzle valve opening degree of this processing tank is adjusted to the limit value, the actual cloth speed value still exceeds the allowable range of the cloth speed setting value, and the nozzle valve opening degree of other treatment tanks is not the limit value. Means for controlling the rotational speed of the main pump using an inverter, and automatically controlling the cloth speeds of the circulating materials between the plurality of processing tanks to keep them within normal cloth speed ranges and to prevent large differences from occurring. An automatic fabric speed control method in a jet dyeing machine equipped with two or more processing tanks. (3) In a jet dyeing machine, the main pump whose rotation speed is controlled by an inverter, the cloth speed detection section, the nozzle valve whose opening can be automatically adjusted, the type of material to be dyed, the basis weight, the dye, the processing temperature, and other dyeing conditions A control device is provided in which a cloth speed setting value set in advance is inputted according to the cloth speed setting value, and a control device is connected to each of the above parts and sends a control signal, and the said control device has an actual cloth speed value set in advance by the signal from the cloth speed detection section. If the allowable range of the cloth speed setting value is exceeded for a predetermined period of time or longer, a signal is issued to increase or decrease the nozzle valve opening, and even if the nozzle valve opening is adjusted, the actual cloth speed value will still be the cloth speed setting value. An automatic cloth speed control device for a jet dyeing machine, characterized in that a signal for controlling the rotation speed of a main pump by an inverter is issued only when the rotation speed of a main pump exceeds a permissible range. (4) In a jet dyeing machine equipped with two or more processing tanks, there is one main pump whose rotation speed is controlled by an inverter, a fabric speed detection unit in each processing tank, and a nozzle valve that can automatically adjust the opening. , a control device for inputting cloth speed setting values set in advance according to the type of material to be dyed, basis weight, dye, processing temperature, and other dyeing conditions, and connected to each of the above parts to send control signals; If the actual cloth speed value exceeds the allowable range of the preset cloth speed setting value for a predetermined period of time or more based on the signal from the cloth speed detection unit of one processing tank, a signal is sent to increase or decrease the nozzle valve opening. Even after adjusting the nozzle valve opening, if the actual cloth speed value still exceeds the allowable range of the cloth speed setting value and the nozzle valve openings of other processing tanks are not at the limit value, the main pump 1. An automatic fabric speed control device for a jet dyeing machine equipped with two or more processing tanks, characterized in that the device controls the rotation speed of the machine so as to issue a signal to control the rotation speed of the machine using an inverter.