JP5128014B1 - Raw material paint supply apparatus, raw material paint supply method, paint mixing apparatus and paint mixing method using the same - Google Patents

Abstract

[PROBLEMS] A raw material paint supply apparatus and a raw material paint supply method capable of reducing the time required for supplying a raw material paint, and further reducing the size and cost of the apparatus, and paint mixing using the same Apparatus and paint mixing method are provided.
[Solution] It has a pump provided on the output side of the supply tank, a raw material supply valve provided on the output side of the pump, a control unit for controlling the operation stop operation of the pump and the opening / closing operation of the raw material supply valve, The control unit measures the weight of the raw material paint supplied into the intermediate tank, and stops the pump when the weight of the raw material paint reaches a preset pre-determining set value. When the weight of is larger than the set value before quantification and reaches the drop set value set in advance, the raw material supply valve is closed.
[Selection] Figure 1

Description

  The present invention uses a raw material paint supply apparatus, a raw material paint supply method and a raw material paint supply method for supplying a necessary amount of raw material paint when a plurality of raw material paints such as a multi-component paint are mixed and used in the field. The present invention relates to a paint mixing apparatus and a paint mixing method.

  In general, various paints are shipped in a state of being filled in a metal container having a reasonable size such as, for example, a canister or a gallon can. These various paints are transported to the site or the like as they are in their original packaging state, that is, as cans or gallons, and the lids are opened and used on the spot.

  Among the paints, for example, there are multi-component paints such as epoxy resin paints and urethane resin paints that are used by mixing a plurality of paints such as two or three liquids and a solvent. Such a paint is hardened in a short time when it is mixed from the beginning, so that it is required to be used by mixing immediately before use.

  On the other hand, in the marine field and the vehicle field, it may be necessary to apply a wide range with the same paint. In such a case, mixing the paint every time at the site is labor intensive, has poor planning, and is required to be improved.

  For this reason, in Patent Document 1 (Japanese Patent No. 3267529), when supplying the raw material paint from the raw material tank for supplying the raw material paint to the mixing tank for temporarily storing the raw material paint, Disclosed is a paint mixing apparatus and method for controlling the flow rate by controlling the opening and closing operation of a raw material supply valve provided therebetween using two kinds of control signals consisting of a large input signal T and a small input signal t. Yes.

  Specifically, as shown in FIG. 5, the paint mixing apparatus 100 disclosed in Patent Document 1 includes a plurality of raw material tanks 110 and 115 in which raw material paints are stored, and raw material supply amounts from the raw material tanks 110 and 115. The raw material supply valves 120 and 125 for adjusting the pressure, the mixing tank 130 for temporarily storing the raw material paint supplied from the raw material tanks 110 and 115, and the stirring means 145 for stirring the paint in the mixing tank 130 are provided. The stirring unit 140 and the control unit 150 for controlling the opening / closing operation of the raw material supply valves 120 and 125 are provided.

  The control unit 150 includes a supply amount measuring unit 152 that measures the weight of the raw material paint supplied to the mixing tank 130, a determination unit 154 that outputs a determination signal when the weight of the raw material paint reaches a predetermined value, A control processing unit 156 that controls the opening / closing operation of the raw material supply valves 120 and 125, the stirring operation of the stirring unit 140, and the like in accordance with a determination signal from the determination unit 154.

  In the paint mixing apparatus 100, the raw material paints stored in the raw material tanks 110 and 115 are sequentially supplied to the mixing tank 130. When supplying the raw material paint to the mixing tank 130, as shown in FIG. 6, the raw material supply valve 120 is controlled by sending a large input signal T and a small input signal t from the control processing unit 156 to the raw material supply valve 120. The raw material paint is supplied to the mixing tank 130 at a large flow rate.

  6A is a graph showing the relationship between the elapsed time and the weight of the raw material paint in the mixing tank 130, and FIG. 6B is a large input signal sent from the control processing unit 156 to the raw material supply valve 120. It is a timing chart which shows the state of T and the small throwing signal t.

  When the weight of the raw material paint supplied to the mixing tank 130 reaches a predetermined quantitative start value, a determination signal is sent from the determination unit 154 to the control processing unit 156, and only the small input signal t is sent to the raw material supply valve 120. Will be sent. Thereby, the opening amount of the raw material supply valve 120 becomes small, and the raw material paint is supplied to the mixing tank 130 at a small flow rate.

  Further, when the weight of the raw material paint supplied to the mixing tank 130 reaches a predetermined fine adjustment start value, a determination signal is sent from the determination unit 154 to the control processing unit 156, and the raw material supply valve 120 is turned on / off. The small input signal t is sent while switching off appropriately. As a result, the raw material paint is supplied in small amounts until the weight of the raw material paint supplied to the mixing tank 130 reaches the measured value.

Japanese Patent No. 3267529

  However, in such a paint mixing apparatus 100, since the weight of the raw material paint supplied to the mixing tank 130 is configured to be supplied in small amounts until reaching the quantitative value after reaching the fine adjustment start value, It took a long time to supply the raw material paint from the supply tank 110 to the mixing tank 130.

  In addition, since the mechanism of the raw material supply valve 120 becomes complicated and the number of equipment increases in order to adjust the input amount of the raw material paint, the apparatus becomes large and the cost increases. It was.

  In view of such a current situation, the present invention can reduce the time required to supply the raw material paint, and further reduce the size and cost of the apparatus, and the raw material paint supply device and the raw material supply It is an object of the present invention to provide a method, a paint mixing apparatus using the same, and a paint mixing method.

The present invention has been invented in order to achieve the above-described problems and objects in the prior art, and the paint mixing apparatus of the present invention has a necessary amount of raw material paint stored in a supply tank in an intermediate tank. A raw material paint supply device for supplying only,
A raw material supply pump provided on the output side of the supply tank;
A raw material supply valve provided on the output side of the raw material supply pump;
A control unit for controlling the operation of stopping the raw material supply pump and the opening and closing operation of the raw material supply valve;
The control unit measures the weight of the raw material paint supplied into the intermediate tank,
When the weight of the raw material paint reaches a pre-determined set value set in advance, the raw material supply pump is stopped.
The raw material supply valve is closed when the weight of the raw material paint is larger than the pre-determined set value and reaches a drop setting value set in advance.

Further, the raw material paint supply method of the present invention is a raw material paint supply method for supplying a necessary amount of raw material paint stored in a supply tank to an intermediate tank,
A pump stop step of stopping a pump provided on the output side of the supply tank when the weight of the raw material paint supplied into the intermediate tank reaches a preset pre-quantification set value;
When the weight of the raw material paint supplied into the intermediate tank is larger than the pre-determined set value and reaches a preset drop set value, a raw material supply valve provided on the output side of the pump is provided. A valve closing process to close;
A supply end process for ending the supply of the raw material paint when a preset waiting time for measurement has elapsed;
It is characterized by including.

  By configuring in this way, it is not necessary to adjust the opening of the raw material supply valve provided between the supply tank and the intermediate tank, so that the apparatus configuration can be simplified and the apparatus can be reduced in size and cost. And the failure rate of the apparatus can be reduced. Furthermore, since the number of equipment can be reduced, the maintenance of the apparatus is easy and the operability can be improved.

  Further, the time required to supply the raw material paint can be shortened by controlling the timing of stopping the raw material supply pump provided between the supply tank and the intermediate tank and the timing of closing the raw material supply valve. Further, since the supply time can be shortened, the operation time of the raw material supply pump and the like can be shortened, and the life can be extended.

The paint mixing apparatus of the present invention includes a plurality of supply tanks each storing a plurality of raw material paints,
The raw material coating material supply device described above;
An intermediate tank in which the plurality of raw material paints are sequentially supplied and temporarily stored;
And a stirring unit for stirring the plurality of raw material paints supplied into the intermediate tank.

Such a paint mixing device further includes a mixed paint supply valve and a mixed paint supply pump on the output side of the intermediate tank,
The mixed paint produced by stirring the plurality of raw material paints in the intermediate tank can be configured to be discharged out of the intermediate tank via the mixed paint supply valve and the mixed paint supply pump.

Further, the paint mixing method of the present invention includes a raw material paint supply step of sequentially supplying a plurality of raw material paints from the supply tank to the intermediate tank by the raw material paint supply method described above,
A stirring step of stirring the plurality of raw material paints in the intermediate tank for a predetermined time after supplying the plurality of raw material paints to the intermediate tank;
It is characterized by including.

  Such a paint mixing method may further include a discharge step of discharging the mixed paint generated by stirring the plurality of raw material paints in the stirring step to the outside of the intermediate tank.

  In this way, by using the paint mixing apparatus and the paint mixing method using the raw material paint supply apparatus and the raw material paint supply method described above, a plurality of raw material paints can be easily and quickly mixed, and the mixed paint can be applied to a coating machine or the like. Since it can supply, the time which a painting operation requires can also be shortened.

  According to the present invention, the time required to supply the raw material paint is shortened by controlling the timing of stopping the raw material supply pump provided between the supply tank and the intermediate tank and the timing of closing the raw material supply valve. be able to. Further, since the supply time can be shortened, the operation time of the raw material supply pump and the like can be shortened, and the life can be extended.

  In addition, since it is not necessary to adjust the opening of the raw material supply valve provided between the supply tank and the intermediate tank, the apparatus configuration can be simplified, and the apparatus can be reduced in size and cost. The failure rate of the device can be reduced. Furthermore, since the number of equipment can be reduced, the maintenance of the apparatus is easy and the operability can be improved.

FIG. 1 is a block diagram schematically showing a paint mixing apparatus including a raw material paint supply apparatus of the present invention. FIG. 2 is a flowchart showing a flow of controlling the paint mixing apparatus in the control unit. FIG. 3 is a timing chart showing the opening / closing timing of the material supply valve, the operation stop timing of the material supply pump, and the change in the weight of the material paint supplied to the material tank. FIG. 4 is a weight value time chart showing the relationship between the elapsed time from the start of supplying the raw material paint and the weight value measured by the measuring means 36 (supply amount measuring unit 152). FIG. 5 is a block diagram schematically showing a conventional paint mixing apparatus. FIG. 6 is a timing chart showing the opening / closing timing of the raw material supply valve, the operation stop timing of the raw material supply pump, and the change in the weight of the raw material paint supplied to the raw material tank in the conventional paint mixing apparatus.

  Hereinafter, embodiments (examples) of the present invention will be described in more detail with reference to the drawings.

  FIG. 1 is a block diagram schematically showing a paint mixing apparatus including a raw material paint supply apparatus of the present invention.

  As shown in FIG. 1, the paint mixing apparatus 10 of the present invention includes, for example, n raw material supply tanks 12 a to 12 n in which a main material such as an epoxy resin and a raw material paint such as an amine curing agent are separately stored. Yes.

  The raw material paint is supplied to the intermediate tank 20 sequentially from the plurality of raw material supply tanks 12a to 12n via the raw material transport pipes 14a to 14n. The raw material transport pipes 14a to 14n are provided with raw material supply pumps 16a to 16n and raw material supply valves 18a to 18n, respectively. The raw material supply pumps 16a to 16n and the raw material supply valves 18a to 18n are configured to be controllable based on a control signal from a control unit described later.

  Further, the intermediate tank 20 is provided with a stirring unit 22, and a plurality of raw material paints supplied into the intermediate tank 20 can be stirred and mixed by a stirring means 24 such as a screw arranged in the intermediate tank 20. it can.

  Further, a mixed paint transport pipe 26 is connected to the intermediate tank 20, and the mixed paint can be taken out from the intermediate tank 20 through the mixed paint transport pipe 26. The mixed paint transport pipe 26 is provided with a mixed paint supply valve 28 and a mixed paint supply pump 30, and the mixed paint supply valve 28 and the mixed paint supply pump 30 are also controlled by a control unit 38 to be described later. It is configured to be controllable based on.

  In the present embodiment, the mixed paint taken out from the intermediate tank 20 via the mixed paint transport pipe 26 is temporarily stored in the relay tank 32 and relayed to a coating machine 34 such as an airless coating machine. By supplying the mixed paint from the tank 32, the object to be coated can be painted.

  In addition, the intermediate tank 20 is provided with a measuring means 36 for measuring the weight of the raw material paint supplied into the intermediate tank 20. The weight of the raw material paint measured by the measuring means 36 is sent as weight data to a control unit to be described later, and is used to control the raw material supply pumps 16a to 16n and the raw material supply valves 18a to 18n.

  In addition, the raw material coating material supply apparatus 11 is comprised by the raw material transport pipes 14a-14n, the raw material supply pumps 16a-16n, the raw material supply valves 18a-18n, the metering means 36, and the control part 38. Moreover, the raw material transport pipes 14a to 14n, the raw material supply pumps 16a to 16n, and the raw material supply valves 18a to 18n can be appropriately changed according to the number of raw material paints to be used, that is, the number of supply tanks 12a to 12n.

  In addition, the paint mixing apparatus 10 is configured to be automatically controlled by the control unit 38 as described above. FIG. 2 is a flowchart showing a flow of controlling the paint mixing apparatus 10 in the control unit 38.

1. Raw material paint supply process (S1-S11)
When the operation of the paint mixing apparatus 10 is started (S1), the weighing means 36 is first tared (S2). Then, a control signal for opening the raw material supply valve 18a is sent from the control unit 38 to the raw material supply valve 18a (S3), and then a control signal for operating the raw material supply pump 16a is supplied from the control unit 38 to the raw material supply. It is sent to the pump 16a (S4).

  When the raw material supply pump 16a operates, the raw material paint is supplied from the supply tank 12a to the intermediate tank 20. While the raw material paint is being supplied to the intermediate tank 20, as shown in FIG. 3, the weight of the raw material paint supplied into the intermediate tank 20 is measured by the metering means 36 constantly or periodically ( S5).

  3A is a graph showing the relationship between the elapsed time and the weight of the raw material paint in the intermediate tank 20, and FIG. 3B is a graph showing the relationship between the control unit 38 and the raw material supply pump 16a and the raw material supply valve 18a. It is a timing chart which shows the state of the control signal to be performed. In FIG. 3B, when the control signal is ON, the raw material supply pump 16a is in an operating state, and the raw material supply valve 18a is in an open state.

  When the weight of the raw material paint supplied into the intermediate tank 20 reaches a pre-quantity setting value set in advance based on a quantitative value (weight of the raw material paint supplied to the intermediate tank 20), control is performed. A control signal for stopping the raw material supply pump 16a is sent from the unit 38 to the raw material supply pump 16a, and the raw material supply pump 16a is stopped (S6).

  Even after the raw material supply pump 16 a stops, the raw material paint remaining in the raw material transport pipe 14 a continues to be supplied to the intermediate tank 20. In this way, while the raw material paint remaining in the raw material transport pipe 14a is being supplied to the intermediate tank 20, the weight of the raw material paint supplied into the intermediate tank 20 is constantly or periodically measured by the measuring means 36. (S7).

  A head setting in which the weight of the raw material paint supplied into the intermediate tank 20 is set in advance as a value larger than the pre-quantity setting value based on the quantitative value (the weight of the raw material paint supplied to the intermediate tank 20). When the value is reached, a control signal for closing the raw material supply valve 18a is sent from the control unit 38 to the raw material supply valve 18a, and the raw material supply valve 18a is closed (S8).

  Even after the material supply valve 18a is closed, the material paint remaining on the downstream side of the material supply valve 18a of the material transport pipe 14a continues to be supplied to the intermediate tank 20. For this reason, the weight of the raw material paint supplied to the intermediate tank 20 by the measuring means 36 is continuously measured until a predetermined measurement waiting time elapses after the raw material supply valve 18a is closed (S9).

  After the measurement waiting time has passed, for example, if the measurement means 36 has not performed measurement normally due to some abnormality such as a device failure or the supply amount of the raw material paint is not normal, an alarm is issued. An error output such as an error is issued, and the operation of the paint mixing apparatus 10 is terminated (S10).

  When the supply of the raw material paint from the supply tank 12a is normally performed, it is determined whether or not all the raw material paints have been supplied (S11). If the supply is not completed, the next raw material paint is determined. That is, the supply of the raw material paint from the supply tank 12b is performed according to S2 to S11.

  When the supply of all the raw material paints is completed, the raw material supply process is completed, and then the stirring process is executed.

2. Stirring step (S12-S14)
In the stirring step, first, a control signal for operating the stirring unit 24 is sent from the control unit 38 to the stirring unit 22, and the stirring unit 22 operates the stirring unit 24 (S12).

  The plurality of raw material paints in the intermediate tank 20 are stirred by the stirring means 24 until a preset stirring time elapses (S13), and a mixed paint is generated.

  After the stirring time has elapsed, a control signal for stopping the stirring unit 24 is sent from the control unit 38 to the stirring unit 22, and the stirring unit 22 stops the stirring unit 24 (S14).

  Thereby, the stirring process is completed, and subsequently, the mixed paint discharging process is executed.

3. Mixed paint discharge process (S15-20)
In the mixed paint discharging step, first, a control signal for opening the mixed paint supply valve 28 is sent from the control unit 38 to the mixed paint supply valve 28 (S15), and control for operating the mixed paint supply pump 30 is performed. A signal is sent to the mixed paint supply pump 30 (S16).

  As a result, the mixed paint supply valve 28 is opened and the mixed paint supply pump 30 is operated to supply the mixed paint from the intermediate tank 20 to the relay tank 32.

  While the mixed paint is being supplied from the intermediate tank 20 to the relay tank 32, the weight of the mixed paint remaining in the intermediate tank 20 is constantly or periodically measured by the measuring means 36 (S17).

  In S17, when the weight of the mixed paint in the intermediate tank 20 is approximately zero, that is, when almost all of the mixed paint in the intermediate tank 20 is discharged out of the intermediate tank 20, the mixed paint supply pump is supplied from the control unit 38. A control signal for stopping 30 is sent to the mixed paint supply pump 30 (S18), and a control signal for closing the mixed paint supply valve 28 is sent to the mixed paint supply valve 28 (S19).

  As a result, the mixed paint supply pump 30 is stopped, the mixed paint supply valve 28 is closed, and the supply of the mixed paint from the intermediate tank 20 to the relay tank 32 is completed (S20).

  Thus, in the paint mixing apparatus 10 in the present embodiment, a plurality of raw material paints are supplied, stirred, and discharged.

  In the present embodiment, since the paint mixing device 10 and the raw material paint supply device 11 are described as being integrated, the mixed paint supply valve 28 and the mixed paint supply pump 30 are controlled by the control unit 38 constituting the raw material paint supply device 11. However, a control unit may be provided separately from the control unit 38 of the raw material coating material supply apparatus 11 to control the mixed coating material supply valve 28 and the mixed coating material supply pump 30.

  Further, the raw material paint supply device 11 can be used in addition to the paint mixing device 10, for example, when supplying one kind of raw material paint, that is, one-component paint, to the intermediate tank 20 in a necessary amount. can do.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this. For example, the present invention is configured such that the mixed paint is directly supplied from the intermediate tank 20 to the coating machine 34. Various modifications can be made without departing from the purpose.

  Hereinafter, from the supply of the raw material paint to the discharge of the mixed paint when the paint mixing apparatus 10 of the present invention is used (the present invention) and when the paint mixing apparatus 100 disclosed in Patent Document 1 is used (prior art) Compare the time it takes.

  In this embodiment, as the raw material paint, 50.0 kg of the main agent, 7.0 kg of the curing agent, and 3.0 kg of thinner are sequentially supplied to the intermediate tank, stirred for 70 seconds in the intermediate tank, and then passed through the mixed paint transport pipe. The mixed paint is discharged from the intermediate tank.

  FIG. 4 is a weight value time chart showing the relationship between the elapsed time from the start of supplying the raw material paint and the weight value measured by the measuring means 36 (supply amount measuring unit 152). A weight value time chart when the paint mixing apparatus 10 of the invention is used, and a one-dot chain line show a weight value time chart when the prior art paint mixing apparatus 100 is used.

  As shown in FIG. 4, the time required from the start of the supply of the raw material paint to the completion of the discharge of the mixed paint is 180 seconds for the paint mixing apparatus 10 of the present invention and 200 seconds for the conventional paint mixing apparatus 100. As a result, a reduction of 10% was achieved.

DESCRIPTION OF SYMBOLS 10 Paint mixing apparatus 11 Raw material paint supply apparatus 12a-12n Raw material supply tank 14a-14n Raw material transport pipe 16a-16n Raw material supply pump 18a-18n Raw material supply valve 20 Intermediate tank 22 Stirring part 24 Stirring means 26 Mixed paint transport pipe 28 Mixed paint Supply valve 30 Mixed paint supply pump 32 Relay tank 34 Coating machine 36 Metering means 38 Control unit 100 Paint mixing device 110, 115 Raw material tank 120, 125 Raw material supply valve 130 Mixing tank 140 Stirrer 145 Stirrer 150 Control unit 152 Supply amount measurement Unit 154 discriminating unit 156 control processing unit

Claims (6)

A raw material paint supply apparatus for supplying a necessary amount of raw material paint stored in a supply tank to an intermediate tank,
A raw material supply pump provided on the output side of the supply tank;
A raw material supply valve provided on the output side of the raw material supply pump;
A control unit for controlling the operation of stopping the raw material supply pump and the opening and closing operation of the raw material supply valve;
The control unit measures the weight of the raw material paint supplied into the intermediate tank,
When the weight of the raw material paint reaches a pre-determined set value set in advance, the raw material supply pump is stopped.
The raw material coating material supply apparatus which closes the raw material supply valve when the weight of the raw material coating material is larger than the pre-quantification setting value and reaches a preset head setting value. A plurality of supply tanks each storing a plurality of raw material paints;
The raw material paint supply apparatus according to claim 1;
An intermediate tank in which the plurality of raw material paints are sequentially supplied and temporarily stored;
A paint mixing device comprising: a stirring unit for stirring a plurality of raw material paints supplied into the intermediate tank. Further comprising a mixed paint supply valve and a mixed paint supply pump on the output side of the intermediate tank,
The mixed paint generated by stirring the plurality of raw material paints in the intermediate tank is configured to be discharged out of the intermediate tank through the mixed paint supply valve and the mixed paint supply pump. The paint mixing apparatus according to claim 2. A raw material paint supply method for supplying a required amount of raw material paint stored in a supply tank to an intermediate tank,
A pump stop step of stopping a pump provided on the output side of the supply tank when the weight of the raw material paint supplied into the intermediate tank reaches a preset pre-quantification set value;
When the weight of the raw material paint supplied into the intermediate tank is larger than the pre-determined set value and reaches a preset drop set value, a raw material supply valve provided on the output side of the pump is provided. A valve closing process to close;
A supply end process for ending the supply of the raw material paint when a preset waiting time for measurement has elapsed;
A raw material paint supply method comprising: A raw material paint supply step of sequentially supplying a plurality of raw material paints from the supply tank to the intermediate tank by the raw material paint supply method according to claim 4;
A stirring step of stirring the plurality of raw material paints in the intermediate tank for a predetermined time after supplying the plurality of raw material paints to the intermediate tank;
A paint mixing method comprising:   The paint mixing method according to claim 5, further comprising a discharge step of discharging the mixed paint generated by stirring the plurality of raw material paints in the stirring step to the outside of the intermediate tank.

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