JPH0635706B2 - Automatic cloth speed control method and apparatus for jet dyeing machine - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a jet dyeing machine having one treatment tank or two or more treatment tanks.

Conventional technology Conventionally, in regard to cloth speed control that influences dyeing conditions in a jet dyeing machine, a nozzle valve is installed in front of the jet nozzle part, and the operator can check the nozzle valve while watching the nozzle pressure gauge and speedometer. It was based on the method of adjusting the opening of. Regarding the method of controlling the jet nozzle pressure by adjusting the rotational speed of the pump in accordance with the difference between the measured value and the set value of the cloth speed, regardless of the opening of the nozzle valve, Japanese Patent Publication No. 1-49
No. 822.

However, in the conventional example as described above, adjustment of the opening degree of the nozzle valve requires a close contact operation by a skilled person who is familiar with the dyeing conditions, and yet, it is subtle according to the temperature change in the processing tank. Adjustment has been considered impossible. In addition, regarding the control method of adjusting the nozzle speed by adjusting the rotational speed of the pump according to the difference between the measured value and the set value of the cloth speed, in the case of a jet dyeing machine having a plurality of processing tanks, There are subtle differences in the mechanical conditions due to the nozzle type, gap settings, suction valve settings, etc., the surface conditions inside the processing tanks, and the processing conditions in the circulation path, resulting in different finishes between processing tanks. There is a problem that it is difficult to make the cloth speed the same in all processing tanks.

In order to achieve uniform dyeing by a conventional dyeing method, a temperature range (for example, 80 ° C to
Up to 130 ° C), a method has been adopted in which the temperature rising curve is made gentle while keeping the cloth speed constant. However, such a method has a limit in reducing the dyeing process time.

An object of the present invention is to have a main pump having a nozzle valve capable of automatically adjusting the opening and an inverter for controlling the number of revolutions, and to automatically and subtly adjust by the difference between the actual measured cloth speed and the preset cloth speed. Provided is an automatic cloth speed control method and apparatus capable of realizing uniform speed control and uniformization of cloth speed between one processing tank or two or more processing tanks. At the same time, the overall dyeing processing time is shortened.

Means for Solving the Problems In order to achieve the above object, the present invention was first set in advance as a first invention method in a jet dyeing machine in accordance with the type of material to be dyed, fabric weight, dyeing agent, processing temperature and other dyeing conditions. A means for increasing or decreasing the nozzle valve opening when the cloth speed actual value exceeds the allowable range of the cloth speed set value for a predetermined time or longer,
Even if the nozzle valve opening is adjusted to the limit value, if the measured cloth speed still exceeds the allowable range for the cloth speed set value, a means for controlling the rotation speed of the main pump with an inverter and The automatic cloth speed control method in the jet dyeing machine is designed so that the cloth speed is controlled within the normal cloth speed range.

Whereas the first invention is a case of one treatment tank, in the case of two or more treatment tanks, two or more treatments are carried out as a method of the second invention so as not to make a difference in dyeing effect between treatment tanks. In a jet dyeing machine equipped with a tank, the allowable range of cloth speed set values established in advance according to the type, weight, dyeing agent, processing temperature and other dyeing conditions of the material to be dyed is the cloth speed measured value of one of the processing tanks. Is exceeded for a predetermined time or more, even if the means for increasing or decreasing the nozzle valve opening and the nozzle valve opening of this processing tank are adjusted to the limit value, the measured cloth speed is still within the allowable cloth speed setting value. When the range is exceeded and the nozzle valve opening of the other processing tanks is not the limit value, the speed of the main pump is controlled by an inverter, and the cloth speed of the circulating dyed material between the plurality of processing tanks is kept normal. Set it within the cloth speed range and make sure that there is no big difference. And an automatic fabric speed control method in the jet dyeing machine with two or more multi-processing tank, characterized by controlling.

A third invention is an apparatus for carrying out the method of the first invention, and in the jet dyeing machine, a main pump for controlling the number of revolutions by an inverter, a cloth speed detector, a nozzle valve capable of automatically adjusting the opening degree,
A control device for inputting a cloth speed setting value preset according to the type of the article to be dyed, a basis weight, a dyeing agent, a processing temperature and other dyeing conditions, and connecting the above-mentioned respective parts to send a control signal is provided, and the control device is the cloth speed. When the actual cloth speed value exceeds the permissible range of preset cloth speed values by a signal from the detection unit for a predetermined time or longer, a signal is output to increase or decrease the nozzle valve opening. The automatic cloth speed control device in the jet dyeing machine was controlled to output a signal to control the inverter speed of the main pump only when the actual measured cloth speed exceeds the allowable range of the cloth speed setting value. .

The fourth invention is a case where the third invention is one treatment tank, whereas in the case of two or more treatment tanks, the adjustment between the treatment tanks is performed. In a flow dyeing machine, one main pump that controls the number of revolutions with an inverter, a cloth speed detection unit for each processing tank, a nozzle valve with automatic opening adjustment, the type of material to be dyed, the basis weight, the dye, and the processing temperature. A control device for inputting a cloth speed set value that is set in advance according to other dyeing conditions and connecting with each of the above parts to send a control signal is provided, and the control device is provided with a signal from the cloth speed detection part of any one of the processing tanks. When the actual cloth speed value exceeds the preset allowable value of the cloth speed value for a predetermined time or longer, a signal for adjusting the opening / closing of the nozzle valve is output, and even by adjusting the opening of the nozzle valve, Allowable range of actual cloth speed setting value A plurality of treatment tanks are provided so that a signal for controlling the rotation speed of the main pump is output when the nozzle valve opening of the other treatment tanks is not the limit value The automatic cloth speed controller in the jet dyeing machine.

Working In the first aspect of the invention, the cloth speed detection unit measures the cloth speed measured value every moment and compares it with the cloth speed set value. When the allowable range is exceeded for a predetermined time or longer, the nozzle valve opening degree is adjusted first. . In the case of a jet dyeing machine, the measured fabric speed constantly repeats subtle fluctuations because the material to be dyed travels according to the liquid flow, but it does not always respond to this fluctuation, and the measured cloth speed is measured for a predetermined time. The nozzle pressure is adjusted so as to return to within the range by making a correction only when the set value exceeds the allowable range. The cloth speed setting value and its allowable range established in advance are set by accumulating data based on many years of experience and analysis and arrangement depending on the type of material to be dyed, unit weight, dyeing agent, processing temperature, etc. The dyeing process under the optimum conditions is possible as long as the above condition exists.

There is a limit to the correction by adjusting the nozzle valve opening, and the measured cloth speed is still within the allowable range of the cloth speed set value (normal cloth speed range) depending on whether the nozzle valve opening reaches the upper limit value or the lower limit value. Only when it exceeds the limit, the rotational speed of the main pump is controlled by the inverter. As described above, the nozzle pressure is first adjusted by adjusting the opening of the nozzle valve, and only when the nozzle pressure does not fall within the allowable range, the rotational speed of the main pump is then controlled by the inverter. It can be automatically processed within the optimum cloth speed range for the type.

In the second invention, when a dyeing machine having two or more processing tanks is used, the cloth speed of each processing tank of the two or more processing tanks is judged and adjusted. When the measured cloth speed exceeds the allowable range of the cloth speed set value for a predetermined time, the nozzle valve opening of the processing tank is adjusted.

There is a limit to the correction by adjusting the nozzle valve opening, and if the measured cloth speed still exceeds the allowable range of the set value, it is necessary to control the rotation speed of the main pump by the inverter. However, in this case, when the nozzle valve opening is at the lower limit or the upper limit of one of the remaining other processing tanks, the cloth speed of these other processing tanks increases or decreases as the main pump output increases or decreases. Since there is a high possibility that the speed set value will exceed the allowable range, a cloth speed abnormality alarm is issued to notify the operator. Therefore, only when the opening degree of the nozzle valve is not within the limit value in the remaining processing tanks, the rotation speed control of the main pump by the inverter is executed to maintain and execute the optimum cloth speed range in each processing tank.

A third invention is an apparatus for carrying out the method of the first invention, which comprises a main pump for controlling the rotation speed by an inverter, a cloth speed detecting section, a nozzle valve capable of automatically adjusting the opening degree, and a control signal connected to these. A control device is provided, and in this control device, a cloth speed set value preset by the object to be dyed,
Comparison with the actual cloth speed measurement value from the cloth speed detector, and when the cloth speed setting value exceeds the allowable range, the signal to adjust the nozzle valve opening is first issued to adjust the nozzle opening. Also, the inverter outputs the signal for controlling the rotation speed of the main pump only when the allowable range of the set value is exceeded.

A fourth invention is a case of a jet dyeing machine having two or more processing tanks, and the main pump is one, but the cloth speed detection unit, the nozzle valve capable of automatically adjusting the opening degree, etc. are provided in respective processing tanks. It is installed in. Then, in the control device, when the allowable range of the cloth speed set value is exceeded by the signal from the cloth speed detecting section of any one of the processing tanks for a predetermined time or more, the cloth speed of the processing tank is first adjusted by increasing or decreasing the nozzle valve opening degree. I am trying to do it by.
However, if the 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 opening of the other processing tank is not the limit value (upper limit value or lower limit value). After confirming that, a control signal was output so as to control the rotation speed of the main pump by an inverter.

Embodiment Hereinafter, an automatic cloth speed control method and apparatus according to an embodiment will be described with reference to the drawings.

FIG. 1 shows a control device of a jet dyeing machine having two or more treatment tanks, 1 is a retention tank, 2 is a transfer section, 3 is a liquid ejection section, 4 is a cloth speed detection section, and a drive reel. It was installed in 5 parts.
6 is a nozzle valve, which is capable of automatically adjusting its opening. Reference numeral 7 is a main pump, which can be controlled by an inverter via a motor.
Reference numeral 8 is a heat exchanger, and 9 is a central information processing unit (CPU) as a control device. 10 indicates a cloth speed setting unit. 11 is a cloth. From the main pump 7 through the heat exchanger 8 and the nozzle valve 6,
By the treatment liquid jetted from the liquid jetting unit 3, the cloth 11 passes through the transfer unit 2, enters the retention tank 1, reaches the liquid jetting unit 3 again via the drive reel 5, and the cloth 11 is dyed while the circulation is repeated by the treatment liquid jetting. The dyeing process is carried out by the relative contact of.

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

12 is a start and starts automatic operation. Nozzle valve 6
And the control of the set value of the main pump 7 starts from the initial value.
This is because the operating condition at the time of ending the previous automatic operation does not always return to the initial value.

Next, it is judged whether the operation state is the dyeing process or the water washing process (1
3). When advancing to the dyeing step, after confirming the temperature inside the tank 14, the cloth speed is set 15 depending on the temperature for dyeing, and the automatic cloth speed control is started.
The cloth speed set value is set in advance for the type of material to be dyed, fabric weight, dyeing agent,
The optimum cloth speed setting value is determined from the processing temperature and other dyeing conditions. The controller 9 sets the normal cloth speed range including the plus / minus allowable range around the optimum cloth speed set value.
Is input to.

Fig. 4 shows the relationship between the nozzle pressure (kg / cm ² G) and the main pump speed (INV%) for each opening of the nozzle valve. The shaded area is for the span of 80 mm nozzle diameter. It shows the optimum condition range when using a motor with a gap of 4 mm, pump power, and 2P-30KW in the nozzle.

Whether or not it is within the normal cloth speed range is determined by the cloth speed determination 16, and if it is within the range, the nozzle valve opening degree and the main pump rotation speed are not changed and the processing is continued. If the cloth speed judgment 16 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 judged whether the nozzle valve opening is at the upper limit or the lower limit.

If the nozzle valve opening has not reached the limit, the nozzle pressure is controlled by adjusting the opening.

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

The control of the nozzle pressure is first performed by a nozzle valve (adjusting the opening degree of the electric valve).

Since "nozzle valve opening maximum value" and "nozzle valve opening minimum value" are set in the cloth speed pattern for adjusting the opening of the nozzle valve, there is a limit to correction by the nozzle valve. Therefore,
When the opening of the nozzle valve is at the limit value, it is necessary to control the nozzle pressure by the main pump inverter.

In the case of two or more processing tanks, first, in one processing tank A, when the nozzle valve opening is the upper limit (Fig. 4A) 17, it is judged whether the other processing tank B is the lower limit 19 or the lower limit. (4th
In the case of FIG. B), the nozzle valve opening and the main pump output are not adjusted, and the process proceeds to the step of the processing tank B (see FIG. 2), and all the steps of each processing tank (A to Z in FIG. 2) are completed. After that, the presence or absence of the upper limit 26 or the lower limit 27 processing tank of the nozzle valve opening is collectively determined, and only when both the upper and lower processing tanks are present, the cloth speed abnormality alarm 20 is issued to notify the operator.

In Figure 4, for a 82% to 80% of the main pump speed one processing tank from the point A, when raising the nozzle valve opening to _a point A, the nozzle pressure is too high, a nozzle valve opening Is 80% to 78% (A ₂ ),
This is because there is a risk that B _{1 will be changed} to B ₂ at the other processing tank B, and the normal cloth speed range will be exceeded.

Normally, in a jet dyeing machine, if the mechanical settings such as nozzle type, gap setting, suction valve setting, etc. are properly performed, the nozzle valve opening of each processing tank should increase or decrease in the same direction. is there. However, the difference between the upper and lower limits of the nozzle opening between the treatment tanks seems to be due to a mechanical setting error or a special operating condition abnormality. At this time, no further control is given and an alarm is issued to notify the operator.

Therefore, as shown in the control subroutine for cloth speed correction of FIG. 3, when the other processing tanks are not at the lower limit 19, the main pump output is increased to 21, and the cloth speed is increased to accelerate. On the other hand, if the measured cloth speed is faster than the cloth speed set value16, it is judged whether the nozzle valve opening is at the lower limit22.If the nozzle valve opening of the other processing tank is not at the lower limit, decrease the nozzle valve opening. 23, and when the other processing tanks are not at the upper limit, the main pump output is reduced 25 and the cloth speed is reduced.

Since the measured cloth speed changes moment by moment, stable cloth speed control cannot be achieved by controlling the nozzle valve opening or the pump rotation speed with an instantaneous measured value. The averaging process is performed in step S1, and the averaging process is controlled so that the averaging process is first corrected when the measured value is out of the allowable range for a certain time (see FIG. 5).

The measured actual cloth speed is constantly compared with the normal cloth speed range, and if the condition is outside the same range for a certain period of time, the "nozzle opening correction" timer works, and when the timer is up, the nozzle valve opening set value is corrected. Add.

If you continue to be out of the same range after making the correction, make a correction each time the timer is up.

If it does not fall within the cloth speed setting range even after adjusting the nozzle valve opening to the upper limit value or the lower limit value, shift to the main pump rotation speed control.

Correcting operation by the inverter for main pump While making the above-mentioned correction by the nozzle valve, even one processing tank reached the "nozzle pressure maximum value" and "nozzle pressure minimum value" and still out of the normal cloth speed range. If the condition continues, the "main pump correction" timer works, and when the timer expires, the set value of the main pump inverter is corrected.

If you're still out of range after making a fix, make a fix each time the timer is up.

Despite the correction operation by the nozzle valve or the inverter for the main pump, if the condition of being out of the normal cloth speed range continues for a certain time, the "cloth speed control failure detection" timer gives an alarm.

In this case, it is determined that various condition settings are inadequate, or there is a special trouble in operation, and the automatic cloth speed control is not functioning properly. To inform.

EFFECTS OF THE INVENTION Since the present invention has the above-described configuration, in the apparatus of the first invention method and the apparatus of the third invention, in the jet dyeing machine consisting of a single processing tank, the nozzle pressure is adjusted according to the cloth speed pattern. First, it is controlled by adjusting the nozzle valve opening, and if the measured cloth speed does not reach the cloth speed setting range, the main pump is controlled by the inverter so that it can be adjusted according to the processing temperature during the dyeing process. By controlling the cloth speed, it is possible to reduce 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 according to the cloth speed pattern by adjusting the nozzle valve opening. Inverter control of the main pump is added in consideration of the effect on the treatment tanks, so that it is possible to operate evenly and under optimal conditions between the treatment tanks, and the dyeing action is extremely quick and gives a good texture. The effect is great.

[Brief description of drawings]

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

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location D06B 23/00 Z

Claims (4)

[Claims] 1. In a jet dyeing machine, an allowable range of a cloth speed set value preset according to the type of a material to be dyed, a basis weight, a dyeing agent, a processing temperature, and other dyeing conditions is measured at a cloth speed measured value for a predetermined time or more. If it exceeds, the means for increasing / decreasing the nozzle valve opening, and if the measured cloth speed still exceeds the allowable range of the cloth speed setting value even if this nozzle valve opening is adjusted to the limit value, the rotation speed of the main pump An automatic cloth speed control method in a jet dyeing machine, characterized in that the cloth speed of an object to be circulated is controlled within a normal cloth speed range. 2. A jet dyeing machine equipped with two or more treatment tanks, wherein the allowable range of cloth speed set values preset according to the type of dyeing material, fabric weight, dyeing agent, treatment temperature and other dyeing conditions When the measured cloth speed of one of the processing tanks exceeds the predetermined value for a predetermined period of time or more, a means for increasing or decreasing the nozzle valve opening and even if the nozzle valve opening of this processing tank is adjusted to the limit value When the measured speed value exceeds the allowable range of the cloth speed setting value and when the nozzle valve opening of the other processing tank is not the limit value, a means for controlling the rotation speed of the main pump by an inverter, Automatic cloth speed control in a jet dyeing machine equipped with two or more processing tanks, characterized in that the cloth speeds of circulating dyes are controlled within the normal cloth speed range and automatically so as not to cause a large difference. Method. 3. In a jet dyeing machine, a main pump for controlling the number of revolutions by an inverter, a cloth speed detecting portion, a nozzle valve capable of automatically adjusting an opening, a kind of a material to be dyed, a basis weight, a dye, a processing temperature and the like. According to the dyeing conditions, a preset cloth speed setting value is input, and a control device is provided which is connected to each of the above parts and sends a control signal, and the control device presets the measured cloth speed value in response to a signal from the cloth speed detecting portion. When the allowable range of the cloth speed set value is exceeded for a predetermined time or longer, a signal to increase / decrease the nozzle valve opening is output. An automatic cloth speed control device for a jet dyeing machine, wherein a signal for controlling the rotation speed of the main pump is output only when the set value exceeds an allowable range. 4. A jet dyeing machine having two or more processing tanks, one main pump for controlling the number of revolutions by an inverter, a cloth speed detection unit for each processing tank, and a nozzle capable of automatic opening adjustment. A valve and a control device that inputs a cloth speed setting value that is preset according to the type of fabric to be dyed, a basis weight, a dyeing agent, a processing temperature, and other dyeing conditions, is connected to each of the above parts, and sends a control signal are provided. When the actual cloth speed value exceeds the preset allowable value of the cloth speed set value by a signal from the cloth speed detector of any one of the processing tanks for a predetermined time or more, the nozzle valve opening is adjusted to be increased or decreased. A signal is output, and even if the measured value of the cloth speed still exceeds the allowable range of the cloth speed setting value even when the nozzle valve opening is adjusted, and the nozzle valve opening of the other processing tank is not the limit value. Inverter control of the rotation speed of the main pump Automatic cloth deceleration control apparatus in jet dyeing machine with two or more multi-processing tank, characterized in that the control to give a signal.