JPH0641663B2 - Dye liquor blender - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention, for the purpose of dyeing a given color, selects a dyeing liquid of a type determined based on a color analysis result, and adjusts the amount of the dyeing liquid. The present invention relates to a dye liquor mixing device that measures and mixes with a meter.

[Prior Art] In the conventional dyeing process, a lot of manual work was performed by a skilled worker, and time and labor were spent. However, recently, automation of the dyeing process is required due to external factors such as increase in small-lot production of other types, reduction of processing cost, demand for shortening delivery time, and internal factors such as lack of skilled workers.

According to this requirement, an automatic blending method has been developed in which based on colorimetric data obtained by color analysis of a sample, formulation input data for dyeing is created, and a dye liquor is measured and mixed according to the data. In the case of this blending method, by outputting the data of the blending result, it is possible to perform highly accurate color matching, and it is possible to eliminate a blending mistake and a loss due to duplicate blending, which cannot be avoided by the conventional manual work.

One of the problems required as a basic technique in such automatic preparation of dye liquor is how to quickly and accurately measure and mix the required amount of the selected dye liquor.

On the other hand, conventionally, a method of measuring the weight of the dye liquor mainly by a weight scale has been tried. 5 to 7 are configuration diagrams showing a conventional dye liquor mixing system, FIG. 5 shows a dye liquor mixing system, and FIG. 6 is a schematic configuration diagram of a dispenser for dispensing from a dye liquor tank to a measuring container for weighing. , FIG. 7 is a plan view showing an arrangement of the dispensing balls to be distributed.

In the system shown in FIG. 5, the dye liquor is filled in the dye liquor tank 1 having a head having only the kind of dye liquor,
It is constantly stirred so as not to settle, and is guided to the dispenser 5 by the pipe 4. Original glue is the original glue tank 2
Is guided to the dispenser 5 through the pipe 4 by the pump 3.

For these weighings, a host computer 9 having a function of storing contents to be mixed in advance and confirming a mixing result,
A microcontroller 10 that eliminates the difference between the command amount determined corresponding to the formulation number of the host computer 9 and the actual measurement result, issues a measurement command as planned, and distributes this to the dispenser 5 according to the dyeing liquid measurement sequence. Performed by. Here, the setting of the date, the weighing speed and the like, the weighing start command and the like are performed through the keyboard 11 and the like.

The dyeing solution based on the above command is dispensed by the dispenser 5,
It is sequentially discharged into the weighing container 6 and weighed by the weight scale 7. The result is displayed on the display 12.

The weighing container 6 is prepared for each compound number. The measured weighing container 6 is transferred by the roller conveyor 8.

As described above, the dispenser 5 has a function of distributing and discharging the dyeing liquid from the dyeing liquid tank to the measuring container 6. Dye liquor
Small capacity discharge valve 1 through flexible tube 13
9 or a large capacity discharge valve 20. These discharge valves are provided with a plurality of stages of orifices for limiting the flow rate. The orifice is selected according to the vertical movement of the valve head 201.

The valves 19 and 20 are housed along the inner wall of the cylindrical cover 24. These valves 19, 20 have
One end of the valve arm 18 is connected and is movable in the cover 24 in the radial direction. The other end of the valve arm 18 is supported on the circumference of the support disk 221. This valve arm 18 has a middle portion and a support disc 221.
It is driven by the expansion and contraction of the valve arm cylinder 17 having a support portion near the center of. The valve arm cylinder 17 is
It is expanded and contracted by the hydraulic pressure supplied via the electromagnetic valve driven by the command of the microcontroller 10.

The discharge valve for the measured dye solution is positioned and arranged at the center position by the photoelectric tube 25. The centrally located discharge valve is the clamp 1 at the tip of the metering cylinder 15.
6, the valve head 201 is clamped, and the valve head 201 is sequentially moved upward. First, the large volume orifice up to 90% of the set amount, and then the medium volume orifice up to 9% of the set amount. Finally, a small capacity orifice discharges each flow rate up to 1% of the set amount.

Such an operation is repeated for each of the dye solution valves that have been defined.
It should be noted that at the stage of discharging the above 1%, the weighing operation is controlled by the weight scale 7 including the lightweight container 6 so as to reach the command quantity, and the weighing operation is completed.

Dye tends to adhere to the discharge port of each discharge valve. Therefore, in order to prevent this, the dye is sprayed through the cleaning liquid pipe 26 from the cleaning nozzle provided at the discharge port for cleaning.

[Problems to be Solved by the Invention] In the weighing method described above, the weighing scale itself has an accuracy of about 10 ⁻⁴ or more, but has the following problems.

First, the accuracy of the weighing scale is obtained under ideal conditions such as no wind and static conditions, and in the actual measurement conditions, it is affected by noise such as wind and external vibrations, and stable accuracy is obtained. The minimum weight is subject to this limitation.

Second, the weighing container is a tare, and is limited in weighing by the size of the weighing platform of the weighing scale.

Thirdly, since the dyeing liquid discharged to the measuring container is discharged in time series for each liquid, the injection time by changing the discharging amount to the measuring container from a large amount to a small amount according to the size of the weighing is Even if we try to shorten it, we cannot eliminate the time delay due to basic time-series measurement.

As described above, in the conventional method, the dye solution mixing device using the weight scale becomes large in size because it is restricted by the above-mentioned various basic problems, and there is a problem in improving the efficiency of the measurement.

[Means for Solving Problems] The present invention, for the purpose of dyeing a given color, selects a dyeing liquid of a type determined based on a color analysis result, measures its amount, and prepares In the dye liquor mixing device, as a means for solving the above-mentioned problems, a tank unit in which a plurality of circulation lines having pumps and piping systems corresponding to the liquid amount range are arranged in parallel in the dye liquid tank is used for each dye liquid. A group of tank units arranged side by side, a flow meter arranged in the circulation path of each of the dyeing liquid tanks, which outputs a flow rate pulse in proportion to the flow rate, and a flow meter arranged in the circulation path of each of the dyeing liquid tanks. A switching valve that selectively switches between the circulation path and the discharge path, and for each dyeing liquid tank required for dyeing, select the circulation path in the corresponding flow rate range according to the amount of each dyeing liquid, and set it in advance. Amount of dye based on the above flow rate pulse And wherein the configuring a control circuit for switching and controlling the valve.

The dye preparation device of the present invention is provided with a wash valve for injecting the wash liquid in the dye discharge path, and after discharging a preset amount of the dye liquid in the control circuit, the wash liquid is discharged. It can be configured by providing a function of controlling the opening of the cleaning valve. In this case, for example, a three-way switching valve may be used as the switching valve, and the three-way switching valve and the cleaning valve may be arranged in a common manifold.

In addition, the dyeing liquid preparation device of the present invention, as a preferred embodiment,
At least one of the circulation paths provided for each of the dye solution tanks may be provided with a small circulation path for returning a part of the flow rate of the circulation path to the dye solution tank.

[Operation] In the dye preparation device of the present invention, a dye tank for containing a dye of a predetermined color is provided with a circulation path having a piping system, a pump, a flow meter and a switching valve so as to correspond to a flow range. A plurality of tank units connected in parallel are arranged for each dye. Then, the dye solution is circulated through the circulation path of each tank unit by a pump. Also, the flow rate of the circulating dye liquor is measured by a flow meter.

In order to perform the mixing, the control circuit extracts a predetermined amount of dye of a predetermined color from the tank unit group, so that the corresponding tank unit is selected and necessary in each selected tank unit. Select a circulation path that matches the amount of dye liquor.

In this state, the control circuit starts accepting the flow rate pulse from the flow meter of the circulation path in each selected tank unit in order to start the measurement of the flow rate, and after the start, in synchronization with the first input flow rate pulse. , Command to switch the switching valve from the circulation path to the discharge path. After that, the flow rate pulse is counted, the flow rate is measured, and when the predetermined flow rate is reached, the switching valve is instructed to switch from the discharge path to the circulation path.

As a result, the required amount of the dyeing liquid of the required color is measured and obtained.

In the case of the present invention, since the dye liquor is measured by a flow meter, unlike the conventional weighing machine, stable accuracy is obtained without being affected by noise such as wind and external vibration. Moreover, since the measurement is performed in a stable flow state in the circulation path, the measurement can be performed with high accuracy. Therefore, the minimum weighing amount is not affected by the outside, and the minimum weighing unit of the flow meter can be achieved.

Further, in the present invention, since the flow rate of the dyeing liquid is directly measured, there is no restriction on the measurement due to the conventional tare such as a measuring container or the size of the weighing platform of the weighing scale.

Further, in the present invention, since each dye is measured, a plurality of dyes can be measured at the same time, and in comparison with the weighing using a weighing scale, which has conventionally been forced to discharge each liquid in time series. hand,
The time required for compounding can be greatly reduced.

In addition, in the present invention, since the dye liquor is constantly circulated, the concentration can be kept constant without special stirring.

[Examples] Examples of the present invention will be described with reference to the drawings.

<Structure of Embodiment> FIG. 1A shows the system structure of an embodiment of the dye liquor blending device of the present invention. It should be noted that in the figure, among the tank unit groups, 1
Although only the unit is shown, in this embodiment, a plurality of tank units having the same configuration are arranged in parallel. That is, they are arranged in parallel according to the type of dye liquor.

The mixing apparatus shown in FIG. 1A is configured by disposing the first, second and third circulation paths 30, 40 and 50 in the dyeing liquid tank 1 and also including a control circuit 60.

The dyeing liquid tank 1 is provided at its bottom portion with inflow passages 34 and 44 of the first and second circulation passages 30 and 40 and a return 48 of the third circulation passage opened. Further, the returns 35 and 45 of the first and second circulation paths 3 and 40 are opened above the dyeing liquid tank 1.

The first circulation path 30 is a circulation path that circulates and measures a small flow rate, and is a pump 3 that pumps dye solution introduced from the inflow path 34.
1, a flow meter 32 for measuring the flow rate of the dye solution to be pressure-fed, a three-way switching valve 33 for switching between circulating and discharging the dye solution and a return 35 for returning the circulating dye solution to the dye tank 1. Configured to have. Further, as a circulation path for circulating a large flow rate, the second circulation path 40 is similar to the first circulation path in that the pump 41, the flow meter 42, and the three-way switching valve 43.
And a return 45.

The flowmeters 32 and 42 have a flow rate transmitter 321, respectively.
The 421 is installed and emits a flow rate pulse at a constant flow rate.

The third circulation path 50 is provided in parallel with the pump 41 and has a flow dividing pipe 46, a flow dividing valve 47, and a return 48. The third circulation passage 50 functions to return a part of the dyeing liquid circulating in the second circulation passage to the dyeing liquid tank 1 in order to obtain an intermediate flow rate between the first circulation passage and the second circulation passage.

The first and second circulation paths 30 and 40 are the three-way switching valve 3
The common discharge path 37 is connected to the entire tank unit group via 3, 43. A cleaning path 36 is branched and connected to the discharge path 37 so that a cleaning liquid can be injected through a cleaning valve 38. As a result, the dyeing liquid and the cleaning liquid are concentrated in one discharge path 37.

The three-way switching valve 33 (same for 43) is, for example, as shown in FIGS. 3A and 3B, a valve 301 and a valve seat 30 that receives the valve 301.
2a, 302b, inlet 311, outlet 310 and outlet 312
A valve chamber 304 provided in communication with each other, a hydraulic chamber 303 provided above the valve chamber 304, a control hydraulic inlet 306 and a throttle 307 provided in the hydraulic chamber 303, and a hydraulic chamber 303 inside the hydraulic chamber 303. A piston 313 that is movably inserted, an "O" ring 308 that is externally fitted to the outer periphery of the piston 313, and a spring 309 that urges the piston 313 in the direction of closing the discharge port 312 are configured. . The valve chamber 304 and the hydraulic chamber 303 are bellows.
Sealed with 305.

FIG. 3A shows the valve operating state when the control oil pressure is not applied to the control oil pressure inlet 306. Valve 301 has spring 309
Is pressed against the valve seat 302a, the discharge port 312 is closed, and the inflow port 311 and the outflow port 310 are in communication with each other through the valve chamber 304.

FIG. 3B shows the valve operating state when the control oil pressure is applied to the control oil pressure inlet 306. In this case, hydraulic pressure acts on the hydraulic chamber 303 via the throttle 307, the piston 313 is pushed up against the biasing force of the spring 309, and the valve 301 separates from the valve seat 302a and abuts on the valve seat 302b. As a result, the outlet 310
Is blocked, and the communication with the inlet 311 is cut off. On the other hand, the inflow port 311 and the exhaust port 312 communicate with each other.

This three-way switching valve has a very small space between the inflow port 311 and the discharge port 312, and is suitable as the three-way switching valve of this embodiment.

The control circuit 60, as shown in FIG.
And a flow rate pulse counter 63, 64 for counting the flow rate pulses sent from the flow rate transmitters 321, 421.

The flow rate pulse counting units 63 and 64 are, for example, counters. The mixing condition setting unit 62 is composed of, for example, a digital switch, and sets the mixing amount of each dyeing liquid in advance. Although the counting units 63 and 64 and the mixing condition setting unit 62 are shown in FIG. 1B as a set corresponding to one tank unit, in reality, they correspond to each tank unit of the tank unit group. A set number is provided.

The calculation unit 61 includes, for example, a microprocessor, a memory,
It is composed of a microcomputer provided with an input / output interface and the like (none of which is shown), and controls tank unit selection, circulation path selection, etc. in accordance with the mixing conditions set by the mixing condition setting unit 62. , Start and stop of the pumps 31 and 41, start and stop of flow rate measurement, operation commands of the three-way switching valves 33 and 43, the cleaning valve 38, and the diversion valve 47 for each tank unit, respectively on the signal lines 61a to 61h.
Through.

<Operation of Embodiment> The operation of the above-described embodiment will be described with reference to the case where the tank unit shown in FIG. 1A is selected as one of the dye solutions.

In each tank unit of the tank unit tank group, the pumps 31 and 41 are activated and the dye solution is circulated in each circulation path.

Here, the calculation unit 61 selects a necessary tank unit and a circulation path from the mixing conditions set by the mixing condition setting unit 62. As the circulation path,
Although there are up to the third, the first circulation path 30 is selected when a small amount is measured, while the second circulation path 40 is selected as a flow rate is increased when a larger amount is measured.
Each mode of the combination of the third circulation path 50, only the second circulation path 40, and the combination of the first and second circulation paths 30 and 40 may be appropriately selected.

Here, if it is assumed that the amount of dyeing liquid in this tank unit is small based on the mixing condition set in the mixing condition setting unit 62, the calculation unit 61 selects the first circulation path 30.

In the first circulation path 30, the pump 31 circulates the dye liquor at a substantially constant flow rate. Therefore, as shown in FIG. 2A, the flow rate transmitter 321 of the flow meter 32 transmits flow rate pulses at regular intervals. That is, since the flow rate from the rising edge of a certain flow rate pulse to the rising edge of the next flow rate pulse is a flow rate pulse measured at a constant flow rate with the most instrumental error of a small flow meter, extremely accurate flow rate information can be obtained. .

Since this flow rate is the same when passing through the three-way switching valve 33, the three-way switching valve 33 is switched in synchronization with the rise of the flow rate pulse, the circulation path 30 is switched from the return 35 to the discharge path 37, and the dye solution is discharged. Then, the three-way switching valve 33 is switched in synchronization with the rising of the flow rate pulse after the specified amount is measured, and the circulation path 30 is returned from the discharge path 37 to the return 35.
By switching to the side again, the set discharge flow rate can be measured with high accuracy.

The measurement of the dyeing liquid is performed by counting the flow rate pulse in the flow rate pulse counting section 63 and comparing the count value with the blending condition set in the blending condition setting section 62 in the computing section 61. When the count value and the mixing condition match, the calculation unit 61 instructs the three-way switching valve 33 to switch the flow path from the discharge path 37 to the circulation path 30.

Next, in the case of measuring the medium flow rate, the second circulation path 40 is selected, the diversion valve 47 is opened, and the flow rate of the second circulation path 40 is reduced to perform the measurement. In the measurement procedure in this case, similarly to the above, the three-way switching valve 43 is switched in synchronization with the rise of the flow rate pulse, the circulation path 40 is switched from the return 45 to the discharge path 37, and the dye solution is discharged. After that, the flow rate pulse counting unit 64 counts the flow rate pulses from the flow rate pulse transmitter 421, and the count value and the blending condition set by the blending condition setting unit 62 are compared by the computing unit 61. By doing. When the count value and the mixing condition match, the calculation unit 61 instructs the three-way switching valve 43 to switch the flow path from the discharge path 37 to the circulation path 40.

When the flow rate is large, the flow dividing valve 47 is closed to close the second circulation path 4
Only 0 is selected and weighing is performed in the same manner as above. In this case, by utilizing the rise of the flow rate pulse from the flow rate transmitter 421, for example, by a frequency dividing circuit not shown, a first stage switching signal as shown in FIG. 2b is formed to switch the three-way switching valve. Perform processing. That is, the three-way switching valve is instructed to switch so that discharge is started at the rising edge of this signal and stopped at the falling edge. As a result, a predetermined amount, for example, 90% of the discharged amount is discharged at a large flow rate.

After that, while passing the predetermined time T, the discharge is stopped and the dye liquor is circulated. Next, the diversion valve 47 is opened, the third circulation path 50 is operated, the flow rate of the dyeing liquid is set to an intermediate flow rate, and the remaining 10% is discharged. In this case, as shown in FIG. 2c, the second stage switching signal is formed, and the discharge is started at the rising edge and stopped at the falling edge.

As described above, by performing the two-step measurement in the large flow rate measurement, the transitional error of switching in the case of continuously measuring the large flow rate and the medium flow rate as in the normal batch control,
The so-called back droop is eliminated. In particular, when it is not in a high-viscosity dyeing liquid, the effect of back dripping becomes large, so the effect of two-stage weighing is great.

As described above, the flow rate discharged from the three-way switching valve is extremely accurate. However, the three-way switching valves 33 and 43 are
In each case, the capacity of the flow path from the discharge port to the discharge path 37 causes an error, so it is desirable to have a structure that minimizes this capacity.

The cleaning liquid is supplied to the cleaning passage 36 by opening and closing the cleaning valve 38. The driving of the cleaning valve 38 is commanded after the end of the supply of the dye solution, and the flow rate thereof is set to an amount that provides a predetermined dye solution concentration by a flow meter (not shown).

As described above, in the present embodiment, the three-way switching valve, which has the lowest reliability due to dye solution sticking or the like, is washed after each measurement, so that the valve is always kept normal and the reliability is improved.

<Modification of Embodiment> In the above embodiment, the three-way switching valve shown in FIGS. 3A and 3B is used, but a three-way switching valve in which no dye residue remains between the discharge port and the discharge path is used. You may. FIG. 4 shows an example thereof.

In the valve shown in the figure, a small flow rate three-way switching valve 33 and a large flow rate switching valve 43 are arranged so as to oppose a common manifold 401, and a cleaning passage 36 is attached to the upper portion of the manifold 401. is there. Note that the cleaning liquid supplied from the cleaning passage 36 is divided into two, and is discharged from the discharge passages 371 and 372 in contact with the discharge ports 312 of the three-way switching valves 33 and 34, respectively.

In the above embodiment, three circulation paths are provided, but the number can be appropriately increased or decreased depending on the scale of the mixing system and the like.

[Effects of the Invention] As described above, according to the present invention, a flowmeter having a flow rate range corresponding to a target dyeing liquid amount is selected for each dyeing liquid, and as a result of measurement, a flow amount required to maintain accuracy, In other words, you can set and select the optimum measuring means, including eliminating the dripping of the dye liquor,
Moreover, since the partial flow rate of the stable flow circulating in the circulation path at a constant flow rate is required, it is highly accurate, and there is no disturbance such as wind pressure and external vibration as in the conventional weight scale method, and highly reliable weighing. The result is obtained.

Furthermore, according to the present invention, since each dyeing liquid is metered and discharged in parallel, the metering speed is essentially high and the efficiency is dramatically improved. As a result, the dye liquor is constantly circulated, so that a constant concentration is maintained without the need for stirring.

As described above, the dye liquor blending apparatus of the present invention has effects such as high accuracy, high reliability, and high efficiency.

[Brief description of drawings]

FIG. 1A is a block diagram showing a system configuration of an embodiment of the dye liquor blending apparatus of the present invention, FIG. 1B is a block diagram showing an example of a control circuit used in the above embodiment, and FIG. 2 is a view of the above embodiment. Waveform diagrams showing flow rate pulses and three-way switching valve switching signals, FIGS. 3A and 3B are cross-sectional views showing an example of the three-way switching valve used in the above embodiment, and FIG. 4 shows another example of the three-way switching valve. FIG. 5 is a cross-sectional view, FIG. 5 is a system configuration diagram showing a conventional dye liquor blending device using a weight scale, FIG. FIG. 3 is a plan view of a main part showing an arrangement of discharge bars to be used. 1 ... Dye tank 30, 40 and 50 ... Circulation path 31, 41 ... Pump 32, 42 ... Flow meter 33, 43 ... Three-way switching valve 34, 44 ... Inflow path 35, 45, 48. Return 36 …… Wash path 37 …… Discharge path 38 …… Wash valves 321, 421 …… Flow rate transmitter 46 …… Flow dividing pipe 47 …… Flow dividing valve 60 …… Control circuit 61 …… Calculation section 62 …… Mixing condition setting 63, 64 ... Flow rate pulse counter

Claims (4)

[Claims] 1. A dye liquor blending device for selecting a dye liquor of a type determined based on a color analysis result for the purpose of dyeing a given color, and blending the dye liquor in a flow rate range. A circulation unit having a pump and a piping system corresponding to the above, a tank unit group in which a plurality of systems are arranged in parallel in the dyeing liquid tank, and a tank unit group arranged for each dyeing liquid, and in the circulation line of each dyeing liquid tank. A flow meter that is arranged and outputs a flow rate pulse in proportion to the flow rate; a switching valve that is arranged in the circulation path of each of the dyeing liquid tanks and that selectively switches the flow path to either the circulation path or the discharge path; For each dyeing liquid tank required for dyeing, select a circulation path in a corresponding flow rate range according to each dyeing liquid amount, and switch control of the preset amount of dyeing liquid based on the flow rate pulse by switching the switching valve. And a control circuit. Dye liquor mixing device. 2. A washing valve for injecting a washing liquid is provided in the dyeing liquid discharge path, and the washing valve is controlled to be opened so as to discharge the washing liquid after discharging a preset amount of the dyeing liquid in the control circuit. The dye liquor blending device according to claim 1, which is provided with a function. 3. The dye liquor blending device according to claim 2, wherein a three-way switching valve is used as the switching valve, and the three-way switching valve and the washing valve are arranged in a common manifold. 4. A small circulation passage for returning a part of the flow rate of the circulation passage to the dye passage at least at one of the circulation passages provided for each of the dye passages. Second
Item 5. The dye liquor blending device according to Item 3 or Item 3.