JPS6335873A - Dye liquid preparing apparatus - Google Patents

Abstract

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

Description

Detailed Description of the Invention [Industrial Use W1] The present invention is designed to select a predetermined type of dye solution based on the color analysis results, and adjust the amount of the dye solution according to the flow rate for the purpose of dyeing a given color. This invention relates to a dye liquid mixing device that measures and mixes dye liquid using a meter.

[Prior Art] Conventionally, the dyeing process has been largely manual work based on the intuition of experts, consuming time and effort. However, recently, there has been a demand for automation of the dyeing process due to external factors such as increased production of other products in small quantities, reductions in processing costs, and demands for shortened delivery times, as well as internal factors such as a shortage of skilled workers.

In accordance with this demand, an automatic mixing method was developed in which dyeing mixing input data is created based on colorimetric data from sample color analysis, and the dye solution is measured and mixed according to this data. In the case of this compounding method, by outputting the data of compounding results, highly accurate color matching becomes possible, and losses due to compounding errors and duplicate compounding that could not be avoided with conventional manual methods can be eliminated.

One of the basic technical issues required in automatic preparation of dye liquors is how to quickly and accurately measure and mix the required amount of the selected dye liquor.

On the other hand, in the past, attempts have been made to mainly measure the weight of the dye liquor using a weighing scale. Figures 5 to 7 are block diagrams showing a conventional dye liquor mixing system, Figure 5 shows a dye liquor blending system, and Figure 6 is a schematic diagram of a dispenser that dispenses from a dye liquor tank to a measuring container for measuring. , FIG. 7 is a plan view showing the arrangement of the ejection pulses to be distributed.

In the system shown in Fig. 5, the dye liquor is filled into a dye liquor tank 1 which has a head corresponding to the type of dye liquor, is constantly stirred to prevent precipitation, and is sent to a dispenser 5 through a pipe 4. The zero-base glue being introduced is guided from the base-glue tank 2 to a dispenser 5 through a pipe 4 by a pump 3.

These measurements are carried out by a host computer 9 having functions such as storing the contents to be mixed in advance and checking the mixing results;
A microcontroller 10 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 it to the dispenser 5 according to the order of measuring the dye liquid. This is done by Here, settings such as the date and weighing speed, and commands to start weighing are performed via the keyboard 11 and the like.

The dye liquid based on the above instructions is distributed by the dispenser 5,
They are sequentially discharged into a weighing container 6 and weighed by a weighing scale 7. This result is displayed on the display 12.

A measuring container 6 is prepared for each formulation number.

The weighed container 6 is transported by a roller conveyor 8.

As mentioned above, the dispenser 5 has a machine for distributing and discharging the dye liquid from the dye liquid tank to the measuring container 6.
Small volume discharge valve 1 through flexible tube 13
9 or Taiko is led to the discharge valve 20. These discharge valves are provided with multiple stages of orifices that limit fla. The orifice is selected according to the vertical movement of Rad 201 into the valve.

The valves 19 , 20 are also housed along the inner wall of the cylindrical cover 24 . These valves 19.20 include:
One end of the valve arm 18 is connected and is movable in the radial direction within the cover 24. The other end of the valve arm 18 is supported on the circumference of a support disk 221.

This valve arm 18 has a middle portion and a support disk 2.
Valve arm cylinder 1 with a support part near the center of 21
It is driven by the expansion and contraction of 7. Valve arm cylinder 17
is expanded and contracted by hydraulic pressure supplied via a solenoid valve driven by a command from the microcontroller 10.

The discharge valve for the dye liquid to be measured is positioned at the central position by the phototube 25. The centrally located discharge valve is connected to the clamp 1 at the tip of the metering cylinder 15.
6 clamps the valve head 201 and sequentially moves the rad 201 upward to the valve, first to 90% of the set volume through the large volume orifice, then to 9% of the set volume through the medium volume orifice. Finally, a small-capacity refilling device is used to discharge each flow rate up to 1% of the set amount.

Repeat this operation for each designated dye solution valve.
In addition, at the stage of discharging the above-mentioned 1% amount, control is performed so that the command including the weighing container 6 is weighed by the weighing scale 7, and the weighing operation is completed.

Dye tends to stick to the discharge port of each discharge valve, so in order to prevent this, the cleaning liquid supplied through the cleaning liquid pipe 26 is jetted out from the cleaning nozzle disposed at the discharge port of the discharge valve that is waiting to be measured. It's being washed.

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

First, the accuracy of the weighing scale mentioned above is obtained under ideal conditions such as no wind and stationary conditions, and under actual measurement conditions,
Stable accuracy cannot be obtained due to the influence of noise such as wind and external vibrations, and the minimum weight is subject to this restriction.

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

Thirdly, since the dye liquor discharged into the measuring container is discharged in chronological order one by one, the injection time can be reduced by changing the discharge amount into the measuring container from a large amount to a small amount according to the size of the weighing. Even if we try to shorten it, we cannot eliminate the time delay due to basic time-series metrics.

As described above, the conventional method is subject to the above-mentioned various basic problems, so the dye liquor mixing device using a weighing scale becomes large, and there is a problem in improving the efficiency of measurement.

[Means for Solving the Problems] The present invention selects a predetermined type of dye solution based on the color analysis results, measures the amount, and prepares the dye solution for the purpose of dyeing a given color. As a solution to the above problem in dye liquor mixing equipment, a tank unit is installed in which multiple circulation paths each having a pump and piping system corresponding to the flow rate range are arranged in parallel in the dye liquor tank for each dye liquor. A group of tank units placed side by side, a flow meter placed in the circulation path of each of the dye liquid tanks mentioned above and outputting a flow rate pulse in proportion to the flow rate, and a flow meter placed in the circulation path of each of the dye liquid tanks mentioned above to control the flow path. A switching valve that selectively switches to either the circulation path or the discharge path, and a circulation path that selects the appropriate flow rate range according to the amount of each dye solution for each tank of dye liquid required for dyeing, and a preset amount The apparatus is characterized in that it is configured to include a control circuit that controls switching of the switching valve based on the flow rate pulse.

The dye liquor blending device of the present invention is provided with a cleaning valve for injecting the cleaning solution in the dye liquor discharge path, and a cleaning valve for discharging the cleaning solution after discharging a preset amount of the dye liquor in the control circuit. It can be configured with a function to control opening. In this case, the switching valve may be, for example, a three-way switching valve, and the three-way switching valve and the cleaning valve may be arranged in a common manifold.

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

C Effect 1 The dye liquor blending device of the present invention has a dye liquor tank containing dye liquor of a predetermined color, and a circulation path comprising a piping system, a pump, a flow meter, and a switching valve, in a manner that corresponds to a flow rate range. Multiple tank units connected in parallel are arranged to accommodate the amount of dye liquid. Then, the dye solution is circulated through the circulation path of each tank unit by a pump. Additionally, the flow rate of the circulating dye solution is measured using a flow meter.

To perform mixing, the control circuit selects the appropriate tank unit from among the tank units in order to extract a predetermined amount of dye liquid of a predetermined color, and in each selected tank unit, the necessary Select a circulation path that matches the amount of dye solution.

In this state, the control circuit starts accepting flow rate pulses from the flow meters in the circulation path in each selected tank unit in order to start measuring the flow rate, and after starting, the control circuit synchronizes with the first input flow rate pulse. Then, the switching valve is commanded to switch from the circulation path to the discharge path. Thereafter, the flow rate is measured by counting flow rate pulses, and when a predetermined flow rate is reached, the switching valve is commanded to switch from the discharge path to the circulation path.

In this way, the required amount of dye liquid of the required color is measured and obtained.

In the case of the present invention, since the dye liquor is measured with a flowmeter, unlike the measurement using a conventional weighing scale, stable accuracy can be obtained without being affected by noise such as wind and external vibrations. Moreover, since the measurement is performed while the flow is stable in the circulation path, highly accurate measurement is possible. Therefore, the minimum weighing amount is not affected by the external shadow 1, and the minimum measuring unit of the flowmeter can be achieved.

Further, in the present invention, since the flow rate of the dye liquor is directly measured, measurement is not limited by the tare of a conventional measuring container or the like or the size of the scale stand of a weighing scale.

Furthermore, since the present invention measures each dye solution, it is possible to measure multiple types of dye solutions at the same time, compared to conventional weighing scales that had to dispense each solution in chronological order. hand,
The time required for compounding can be significantly reduced.

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

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

<Configuration of Embodiment> FIG. 1A shows a system configuration of an embodiment of the dye liquor blending apparatus of the present invention. In addition, in the same figure, one of the tank unit groups is shown.
Although only the unit is shown, in this embodiment, a plurality of similarly configured tank units are arranged in parallel. That is, they are arranged in parallel according to the type of dye solution.

The blending device shown in FIG. 1A includes first, second, and third circulation paths 30, 40, and 50 arranged in the dye liquid tank 1, and a control circuit 60.

The dye liquid tank 1 is provided with the inflow passages 34, 44 of the first and second circulation passages 30, 40 and the return 48 of the third circulation passage opened at the bottom thereof.

Further, above the dye liquid tank l, a return 35.45 of the first and second circulation paths 30.40 is opened.

The first circulation path 30 is a circulation path that circulates and measures a small flow rate, and a pump 31 that pumps the dye liquid introduced from the inflow path 34.
, a flow meter 32 for measuring the flow rate of the dye solution being pumped, a three-way switching valve 33 for switching between circulating the dye solution into the circulation path or discharging it, and a return 35 for returning the circulating dye solution to the dye solution tank l. It is composed of Further, as a circulation path that circulates a large flow rate, the second circulation path 40 is configured to include a pump 41, a flow meter 42, a three-way switching valve 43, and a return 45, similarly to the first circulation path.

The flow meters 32 and 42 each include a flow transmitter 321.
, 421 are installed, and transmit a flow pulse at every constant flow rate.

Further, the third circulation path 50 is provided in a parallel row to the pump 41, and is configured to include a diverter pipe 46, a diverter valve 47, and a return 48. This third circulation path 50 functions to return a portion of the dye liquid circulating in the second circulation path to the dye liquid tank l in order to obtain a flow rate intermediate between the first and second circulation paths.

The first and second @ ring paths 30 and 40 are the three-way switching valve 3
3.43 to a common discharge channel 37 for the entire group of tank units. A cleaning path 36 is branched and connected to this discharge path 37, and a cleaning liquid can be injected through a cleaning valve 38. As a result, the dye liquid and the cleaning liquid are concentrated in one discharge path 37.

The three-way switching valve 33 (43 is the same), for example, as shown in FIGS. 3A and 3H, has a valve 301, valve seats 302a and 302b that receive it, an inlet 311, and an R outlet 31.
0 and the discharge port 312 communicate with each other.
and a hydraulic chamber 303 provided above the valve chamber 304,
A control hydraulic pressure inlet 306 and a throttle 307 provided in the hydraulic chamber 303, a piston 313 movably fitted into the hydraulic chamber 303, and a "0" ring 308 fitted around the outer periphery of the piston 313. , and a spring 309 that biases the piston 313 in the direction of closing the discharge port 312. Note that the valve chamber 304 and the hydraulic chamber 303 are sealed with a bellows 305.

MS3 diagram A shows the valve operating state when the control hydraulic pressure is not applied to the control hydraulic pressure inlet 306. The valve 301 is pressed by the spring 309 and comes into contact with the valve seat 302a, the discharge port 312 is closed, and the flow is stopped. The inlet 311 and the outlet 310 are in communication via 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, the oil pressure acts on the oil pressure chamber 303 through the throttle 307, and the piston 313 is moved by the spring 309. The valve 301 is pushed up against the force, moves away from the valve seat 302a, and comes into contact with the valve seat 302b.

As a result, the outflow port 310 is blocked, and the inflow port 31
Communication with 1 is cut off. On the other hand, the inlet 311 and the outlet 312 communicate with each other.

This three-way switching valve has an extremely small space between the inlet 311 and the outlet 312, and is suitable as the three-way switching valve of this embodiment.

As shown in FIG. 1B, the control circuit 60 includes a calculation section 61, a compounding condition setting section 62 that sets compounding conditions, and a flow rate pulse counting section 63 that counts the flow rate pulses sent from the flow rate transmitters 321 and 421. .64.

The flow rate pulse counting units 63 and 64 are composed of counters, for example. The blending condition setting unit 62 is composed of, for example, a digital switch, and the counting units 63, 64 and the blending condition setting unit 62, which preset the blending amount of each dye liquor, are one unit in FIG. 1B. Although one set corresponding to the tank unit is shown, in reality, the number of sets corresponding to each tank unit of the tank unit/) group is provided.

The calculation unit 61 includes, for example, a microprocessor, a memory,
It consists of a microcomputer equipped with input/output interfaces (none of which are shown), and controls the selection of tank units, selection of circulation paths, etc. according to the formulation conditions set by the formulation condition setting section 62. , for each tank unit, commands to start and stop the pump 31, 41, start and stop flow measurement, and operate the three-way switching valve 33, 43, the cleaning valve 38, and the diversion valve 47 are sent via signal lines 61a to 61h, respectively. Let's do it.

<Operation of the embodiment> The operation of the embodiment described in L will be explained by taking as an example the case where the tank unit shown in FIG. 1A is selected as one of the dye liquids.

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

Here, the calculation section 61 selects a necessary tank unit from the compounding conditions set in the compounding condition setting section 62, and also selects a circulation path. As a circulation route, the first
There are up to three circulation paths, but when measuring a small amount, select the first circulation path 30.

On the other hand, when measuring a larger amount than this, as the flow rate increases, ■ the second circulation path 40 and the third circulation path 5
0 combination, ■Second circulation path 40 only, ■First. The combination of the second recirculation paths 30 and 40 may be selected as appropriate.

Here, based on the mixing conditions set in the mixing condition setting section 62, assuming that the amount of dye liquid in this tank unit is small, the calculating section 61 selects the first circulation path 30.

In this first circulation path 30, the dye liquid is circulated by a pump 31 at a substantially constant flow rate. Therefore, the flow rate transmitter 321 of the flow meter 32 transmits flow rate pulses at regular intervals, as shown in FIG. 2a. In other words, the flow rate from the rise of one flow pulse to the rise of the next flow pulse is a flow pulse measured at a constant flow rate with the most stable instrumental error of a small flow meter, so extremely highly accurate flow rate information can be obtained. .

This flow rate is the same even when passing through the three-way switching valve 33, so 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 liquor is discharged. Then, the three-way switching valve 33 is switched in synchronization with the rise of the flow rate pulse after the specified amount has been measured, and the circulation path 30 is switched from the discharge path 37 to the return 35.
By switching again to the side, highly accurate metering of the set discharge flow rate becomes possible.

The dye liquor is measured by counting the flow rate pulses in the flow rate pulse counting section 63 and comparing the counted value with the compounding conditions set in the compounding condition setting section 62 in the calculating section 61. When the count value and the blending 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 metering a medium flow rate, the second circulation path 40 is selected, the flow dividing valve 47 is opened, and the flow rate of the second circulation path 40 is reduced to perform measurement.

The measurement procedure in this case is the same as above, with the three-way switching valve 4
3 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 liquor is discharged. Thereafter, the flow rate pulses from the flow rate pulse generator 421 are counted in the flow rate pulse counting section 64, and the calculated value is compared with the compounding conditions set in the compounding condition setting section 62 in the calculation section 61. Do it by doing this. When the count value and the blending 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.

In the case of a large flow rate, the flow dividing valve 47 is closed and the second leaf ring path 4 is closed.
0 is selected and measurement is performed in the same manner as described above. In this case, by using the rise of the flow rate pulse from the flow rate transmitter 421, for example, a frequency dividing circuit (not shown) is used to perform measurement as shown in Figure 2. A first stage switching signal is formed to perform switching processing of the three-way switching valve.

That is, the three-way switching valve is instructed to start discharging at the rising edge of this signal and stop discharging at the rising edge of this signal. Thereby, a predetermined amount, for example 90% of the discharge amount, is discharged at a large flow rate.

Thereafter, the discharge is stopped and the dye liquor is circulated for a predetermined period of time T. Next, the diversion valve 47 is opened, the third circulation path 50 is operated, the flow rate of the dye liquor is set to a medium flow rate, and the remaining 10% is discharged. In this case, as shown in FIG. 2C, a second stage switching signal is formed, and discharge is started at the rising edge of the signal, and discharge is stopped at the falling edge of the signal.

In this way, by performing two-stage metering in large flow rate measurement, transient errors in switching when measuring large flow rate and medium flow rate continuously as in normal batch control,
The so-called rear shape has been eliminated. In particular, when the dye liquid is highly viscous, the shadow 1 of the after-forming becomes large, so the effect of two-stage measurement is large.

As mentioned above, the flow rate discharged from the three-way switching valve is extremely accurate. However, the three-way switching valve 33.43
Since the capacity of each flow path from the discharge port to the discharge path 37 becomes a factor of error, it is desirable to have a structure that minimizes this capacity.

Note that the cleaning liquid is supplied to the cleaning path 36 by opening and closing the cleaning valve 38. Driving of the cleaning valve 38 is commanded after the supply of the dye liquid is finished, and the flow rate thereof is set to a predetermined concentration of the dye liquid using a flow meter (not shown).

In this way, in this embodiment, the square switching valve, which has the lowest reliability due to dye liquid sticking, etc., is cleaned each time after measurement, so the valve is always maintained in a normal state and its reliability is improved.

<Modification of the embodiment> In the above embodiment, the three-way switching valve shown in Fig. 3A and H was used, but a three-way switching valve that prevents dye liquor residue from existing between the discharge port and the discharge path was used. An example is shown in FIG.

The valve shown in the figure has a small flow rate three-way switching valve 33 and a large flow rate switching valve 43 disposed opposite to a common manifold 40+, and a cleaning channel 36 in the upper part of the manifold 401.
It is installed. Note that the cleaning liquid supplied from the cleaning path 36 is divided into two parts, and the cleaning liquid is divided into two parts, and the cleaning liquid is divided into two parts, and the cleaning liquid is divided into two parts, and the cleaning liquid is divided into two parts, and the cleaning liquid is divided into two parts, and the cleaning liquid is divided into two parts, and the cleaning liquid is divided into two parts.
2 and are discharged from discharge passages 371 and 372, respectively.

In the above embodiment, three circulation paths are provided, but the number can be increased or decreased as appropriate depending on the scale of the compounding system.

[Effects of the Invention] As explained above, the present invention provides a flow ffi corresponding to the desired amount of dye liquid for each dye liquid. In other words, it is possible to set and select the optimal measuring means, including eliminating the stain after the dye solution, and high accuracy because the partial flow rate of a stable flow circulating in the circulation path at a constant flow rate is required. Therefore, highly reliable weighing results can be obtained without the disturbances such as wind pressure and external vibrations that occur with conventional weighing scale systems.

Furthermore, according to the present invention, each dye liquor is measured and discharged in parallel, so that the measuring speed is physically fast and the efficiency is dramatically improved. As a result, the dye liquor is constantly circulated, so there is no need for stirring and a constant concentration is maintained.

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

[Brief explanation of the drawing]

FIG. 1A is a block diagram showing the system configuration of one embodiment of the dye liquor blending device of the present invention, FIG. 1B is a block diagram showing an example of the control circuit used in the above embodiment, and FIG. 2 is a block diagram showing an example of the control circuit used in the above embodiment. Waveform diagrams showing flow rate pulses and three-way valve switching signals, Figures 3A and 3B are cross-sectional views each showing an example of a three-way valve used in the above embodiment, and Figure 4 shows another example of a three-way valve. Cross-sectional view, Figure 5 is a system configuration diagram showing a dye liquid mixing device using a conventional weighing scale, Figure 6 is a schematic configuration diagram of a dispenser that dispenses liquid from a dye liquid tank to a measuring container for weighing, and Figure 7 is a distribution diagram. FIG. 3 is a plan view of a main part showing an arrangement of ejection pulses. 1... Dye liquid 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... Washing path 37... Discharge path 38... Washing valve 321, 421... Flow rate transmitter 46... Diversion pipe 47... Diversion valve 60...・Control circuit 61...Arithmetic unit 62...Mixing condition setting unit 63.64...Flow rate pulse counting unit Applicant: O7 Hell Kiki Kogyo Co., Ltd. Agent Patent attorney Iwao Mishina Figure 1A Figure 1B 61a 61b 61c 61d 61e 6/f 6
/g 6/hFigure 2Figure 3Do-1ノ; Shibasa Σ (
E) Figure 4 Figure 5 711 Figure 6 Figure 7

Claims (4)

[Claims] (1) For the purpose of dyeing a given color, a dye solution mixing device that selects a specified type of dye solution based on color analysis results, measures the amount, and mixes it corresponds to a flow rate range. A tank unit in which a plurality of circulation paths each having a pump and a piping system are arranged in parallel in a dye liquid tank, a group of tank units placed side by side for each dye liquid, and a circulation path of each of the above dye liquid tanks. , a flowmeter that outputs a flow rate pulse in proportion to the flow rate, and a switching valve that is placed in the circulation path of each of the above dye liquid tanks and selectively switches the flow path to either the circulation path or the discharge path; A control circuit that selects a circulation path in a corresponding flow rate range for each required dye liquid tank according to the amount of each dye liquid, and controls switching of the switching valve to supply a preset amount of dye liquid based on the flow rate pulse. A dye liquid mixing device comprising: (2) A cleaning valve for injecting cleaning liquid is provided in the dye liquid discharge path, and a function is provided in the control circuit to open and control the cleaning valve so that the cleaning liquid is discharged after a preset amount of dye liquid has been discharged. A dye liquor mixing device according to claim 1, comprising: a dye liquor mixing device; (3) The dye liquor mixing 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) Claims 1 and 2, wherein at least one of the circulation paths provided for each of the dye liquid tanks is provided with a small circulation path that returns a part of the flow rate of the circulation path to the dye liquid tank. 3. The dye liquor blending device according to item 3 or 3.