JP2012035203A - Thin plate washing and drying apparatus, and method of washing and drying thin plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin plate washing and drying apparatus for washing and drying thin plates, such as plates after punching is applied, which is small sized and simple, and to provide a method of washing and drying the thin plates.SOLUTION: The thin plate washing and drying apparatus includes: an alkaline ion water manufacturing apparatus 2; a heating device 4 for heating the manufactured alkaline ion water; a conveying device 5 for conveying a thin plate 10 to be washed; a jet device 6 for spraying the heated alkaline ion water on both sides of the thin plate 10 conveyed by the conveying device 5; and a water absorption and drying apparatus 7 having first water absorption rollers 71 and 72 and second water absorption rollers 73 and 74 which constitute one part of the conveying device 5 and convey the thin plate 10 while wiping the heated alkaline ion water adhered on both sides of the thin plate 10.

Description

  The present invention relates to a cleaning / drying apparatus and a cleaning / drying method for cleaning and drying a thin plate such as a sheet metal to which oil stains adhere by punching.

  In sheet metal processing, for example, a punching machine is used to drill holes of various shapes, cut, form, and tap, and then a deburring machine generates burrs generated on the processing edge of the metal plate. Finally, the metal plate is bent into a desired shape by a bending machine.

  In punching with a punching machine, a cutting oil having an effect of reducing cooling and friction is indispensable, and the cutting oil adheres to the surface and cut surface of the processed sheet metal. If the sheet metal with the cutting oil attached is processed by a deburring machine, the cutting oil is further stretched by the deburring machine, and there is a problem that dust adheres to the oil. Therefore, it is necessary to wipe off the cutting oil adhering to the punched sheet metal.

  The manual operation for wiping off the oil adhering to the sheet metal is often insufficient, and it is necessary to further wash and dry after completion of the product. For this reason, it is required that the sheet metal after punching is washed with a machine and dried.

  In addition, it is well-known that the alkali ion water obtained by electrolysis of water is excellent in the washing | cleaning effect of oil as it is disclosed by the following patent document 1. FIG.

JP 2005-290336 A

Since the apparatus for cleaning and drying the sheet metal is newly disposed between the punching machine and the deburring machine, it is preferable that the apparatus is small and space-saving.
Therefore, an object of the present invention is to provide a small and simple thin plate cleaning / drying apparatus for cleaning and drying a thin plate such as a sheet metal after punching.
Another object of the present invention is to provide a simple method for washing and drying a thin plate.

  In order to achieve the above object, the thin plate washing and drying apparatus according to claim 1 includes an alkaline ionized water production device, a heating device for heating alkaline ionized water produced by the alkaline ionized water production device, and a thin plate to be washed. A transport device that transports, an injection device that sprays the heated alkaline ionized water onto both surfaces of a thin plate that is transported by the transport device, and a portion of the transport device that is heated, A water absorption / drying device in which two or more pairs of water absorption rollers for conveying the thin plate while wiping off both surfaces of the attached thin plate are disposed.

  This thin plate washing and drying apparatus uses alkaline ionized water produced by an alkaline ionized water producing apparatus as a cleaning liquid. Alkaline ion water is excellent in the effect of emulsifying and washing oil, but in order to further enhance the washing effect, the alkali ion water is heated with a heating device. The heated alkaline ionized water is sprayed onto both surfaces of the thin plate being transported by the transport device by the spraying device, and both surfaces of the thin plate are shower washed. The washed thin plate is heated by the heat of the heated alkaline ionized water. Alkaline ion water adhering to the surface when transported by the first pair of water absorbing rollers constituting the transport device is sucked by the water absorbing roller to form a thin alkali ion water film. The water film of this thin alkaline ionized water evaporates due to the residual heat of the thin plate while being transported to the next pair of water absorption rollers, and is dried to some extent, and when it is transported by the next pair of water absorption rollers, the remaining water is absorbed by water. When it is sucked out by the roller and carried out of the second water-absorbing roller, all disappears. Therefore, the alkali ion water adhering to the surface of the thin plate while being conveyed by at least two sets of water absorbing rollers evaporates and is almost completely dried by natural drying. As a result, the thin plate cleaning / drying apparatus of the present invention does not particularly require a drying apparatus, and can be miniaturized and is simple and advantageous in terms of cost.

  The thin plate washing and drying apparatus according to claim 2 is provided in a circulation tank in which the heating device stores the alkali ion water sent from the alkali ion water production device and the alkali ion water jetted by the jetting device. ing.

  By heating the alkaline ionized water stored in the circulation tank, it is possible to efficiently heat the heated alkaline ionized water with minimum heat loss.

  The thin plate cleaning / drying apparatus according to claim 3, wherein when the thin plate is conveyed by the two or more sets of water absorption rollers, the alkali ions on the surface of the thin plate are caused by the residual heat of the thin plate heated by the heated alkali ion water. Water is evaporated and dried.

  As a result, the thin plate cleaning / drying apparatus of the present invention does not particularly require a drying apparatus, and can be miniaturized and is simple and advantageous in terms of cost.

  The thin plate cleaning and drying method according to claim 4 includes a cleaning step of spraying heated alkaline ionized water onto the thin plate for cleaning, a wiping step of wiping the thin plate with a water absorbing material, and heating with the heated alkaline ionized water. And a drying step of naturally drying using the residual heat of the warmed thin plate.

  In order to further enhance the cleaning effect of alkaline ionized water, which has an excellent oil cleaning effect, it is possible to effectively clean the oil adhering to the thin plate by heating and spraying it on the thin plate, and the thin plate is heated to absorb water. When water droplets adhering to the material are wiped off, they are dried by natural drying with the residual heat of the heated thin plate.

In the thin plate washing and drying method according to claim 5, the pH of the alkaline ionized water is 12.1 or more.
A highly alkaline alkaline ionized water having a pH of 12.1 or higher has a high effect of emulsifying and washing the oil.

According to the thin plate washing and drying apparatus of the present invention, the thin plate can be washed and dried while being a simple and small-sized device.
According to the thin plate washing and drying method of the present invention, the thin plate can be easily washed and dried.

It is the block diagram which showed typically one Embodiment of the thin plate washing | cleaning drying apparatus of this invention. It is a top view which shows one Embodiment of the thin plate washing | cleaning drying apparatus of this invention.

  Hereinafter, embodiments of the thin plate cleaning and drying apparatus and the thin plate cleaning and drying method of the present invention will be described, but the present invention is not limited to the following embodiments.

  The thin plate washing and drying apparatus of the present invention is a device for washing and drying while conveying a thin plate to be washed. As shown in FIG. 1 showing an embodiment, a thin plate cleaning and drying apparatus 1 of the present invention includes an alkaline ionized water production apparatus 2, a circulation tank 3 that stores circulating alkaline ionized water, and an alkaline ionized water production apparatus 2. A heating device 4 for heating the produced alkaline ionized water, a conveying device 5 for conveying the thin plate 10 to be cleaned, and a thin plate for conveying the alkaline ionized water heated by the heating device 4 by the conveying device 5 Two or more pairs of water-absorbing rollers that constitute a part of the conveying device 5 and the jetting device 6 that sprays on both surfaces of the conveying plate 5 and conveys the thin plate 10 while wiping both surfaces of the thin plate 10 to which the heated alkaline ionized water has adhered. The water absorption / drying device 7 is provided.

  The alkaline ionized water production apparatus 2 includes an electrolytic tank 21 and a water storage tank 22. The electrolytic cell 22 has an electrolyte chamber 211 in the center, and an anode chamber 212 and a cathode chamber 213 are partitioned by a diaphragm 214 on the left and right sides thereof. The diaphragm 214 allows ionic species in the water to pass freely and inhibits the free passage of water itself. An anode electrode 215 is disposed in the anode chamber 212 and connected to a negative pole of a DC power supply device (not shown), and a cathode electrode 216 is disposed in the cathode chamber 213 and connected to a positive pole of the DC power supply device. Water L1 containing an electrolyte is fed into the electrolytic solution chamber 211 via the pump 23, and discharged as water L2 in which the electrolyte is reduced by electrolysis. The anode chamber 212 and the water storage tank 22 are connected by a pipe, and the alkali ion water produced by electrolysis in the anode chamber 212 is sent to the water storage tank 22, and the alkali ion water L4 in the water storage tank 22 is supplied via a pump 24. And returned to the anode chamber 212 to circulate. As a result, highly alkaline alkaline ionized water L4 is produced. The acidic water L3 produced by electrolysis in the cathode chamber 213 is discharged from the cathode chamber 213. The alkaline ionized water L4 in the water storage tank 22 is sent to the circulation tank 3 through the valve 25.

  The circulation tank 3 is a tank that stores the alkaline ionized water L5, and includes a funnel part 31 that receives the alkaline ionized water L8 that flows down after being washed by the spraying device 6 and washed with the thin plate 10. A circulation pump 61 is disposed in a pipe connecting the circulation tank 3 and the injection device 6. The circulation pump 61 converts the alkaline ion water L 5 in the circulation tank 3 into pressure to produce alkaline ion water L 6, which is supplied to the injection device 6. Can be pumped. The circulation tank 3 is provided with a heating device 4 for heating the stored alkaline ionized water L5.

  The heating device 4 includes a heater 41 provided in the circulation tank 3, a temperature sensor 42 that detects the temperature of the alkaline ionized water L 5 in the circulation tank 3, and a control panel 43. The control panel 43 displays the temperature setting and the temperature detected by the temperature sensor 42. The current applied to the heater 41 based on the temperature difference between the temperature detected by the temperature sensor 42 on the control panel 43 and the set temperature is displayed. It adjusts and it adjusts so that the temperature of the alkali ion water L5 in the circulation tank 3 may be kept at setting temperature. The set temperature can be performed, for example, in the range of 40 ° C to 90 ° C.

  The conveying device 5 cleans and dries the thin plate 10 while conveying the thin plate (work) 10 to be cleaned in the horizontal direction. The right side in FIGS. 1 and 2 is the carry-in side, the left side is the carry-out side, and the thin plate 10 is conveyed from the carry-in side to the carry-out side. In the present embodiment, four free rollers 511 to 514 that are not driven are arranged in parallel in the horizontal direction on the carry-in side. Although not shown, a limit switch for detecting the loading of the thin plate 10 is arranged between the free rollers 511 to 514. When this limit switch is activated, the circulation pump 61 for the conveying device 5 and the ejection device 6 is driven. From the carry-in side, a pair of upper and lower first drive rollers 531 and 532, a free roller 515, a pair of upper and lower second drive rollers 533 and 534, a free roller 516, Third drive rollers 535 and 536 and a pair of upper and lower fourth drive rollers 537 and 538 are arranged. The drive rollers 531 to 538 are driven by the transport motor 54 shown in FIG. On the carry-out side, three free rollers 517 to 519 are arranged in parallel in the horizontal direction. An injection device 6 is provided on both sides of the second drive rollers 533 and 534.

  The injection device 6 includes a pair of upper shower pipes 62 and 63 and a pair of lower shower pipes 64 and 65. The upper shower pipe 62 is disposed above the free roller 515 and the second drive roller 533, 534, and the upper shower pipe 63 is disposed above the second drive roller 533, 534 and the free roller 516, A large number of shower nozzles 66 are provided for injecting a shower L7 of alkaline ionized water downward toward the thin plate 10 to be conveyed. On the other hand, the lower shower pipe 64 is disposed below the free roller 515 and the second drive rollers 533 and 534, and the lower shower pipe 65 is disposed below the second drive roller 533 and 534 and the free roller 516. A large number of shower nozzles 66 are provided for spraying an alkaline ionized water shower L7 upward toward the thin plate 10 to be transported. These shower pipes 62 to 65 are respectively connected to the outlet side of the circulation pump 61 so that the heated alkaline ionized water L6 whose pressure has been increased by the circulation pump 61 can be ejected from the nozzle 66 onto both the upper and lower surfaces of the thin plate 10. Yes. As shown in FIG. 2, a space between the free roller 515 and the free roller 516 is a conveyance path for performing a cleaning process. In FIG. 2, the lower shower pipes 64 and 65 are shown to show the nozzle 66.

  Partitions 67 for collecting the sprayed alkaline ionized water L7 are provided between the first drive rollers 531 and 532 and the free roller 515 and below the free roller 516 and the third drive roller 535, respectively. The funnel portion 31 of the circulation tank 3 receives the alkali ion water flowing down the partition 67. Further, a cover 68 that covers the upper shower pipes 62 and 63 and has a lower end edge disposed close to the upper end of each partition 67 is detachably disposed.

  The third drive roller 535, 536 and the fourth drive roller 537, 538 are respectively a first water-absorbing roller 71, 72 and a second water-absorbing roller having sponge rollers as water-absorbing materials for wiping off the alkaline ionized water adhering to the thin plate 10. 73 and 74 are also used. Sponges include PVA that cures when dried and urethane systems that do not cure when dried, but urethane systems are preferred in the thin plate washing and drying apparatus of the present invention. The first water-absorbing rollers 71 and 72 and the second water-absorbing rollers 73 and 74 have a separation distance of about the diameter of the roller, and the conveying path between the first water-absorbing rollers 71 and 72 and the second water-absorbing rollers 73 and 74 and the first water-absorbing rollers 73 and 74 Free rollers 517 to 519 serving as carry-out portions on which the thin plate 10 carried out from the two water-absorbing rollers 73 and 74 is placed are drying units that perform natural drying. These first water-absorbing rollers 71 and 72, second water-absorbing rollers 73 and 74, and the conveyance paths between them and free rollers 517 to 519 as carry-out portions perform a wiping / drying process as shown in FIG. -The drying apparatus 7 is comprised.

  In the present embodiment, the first drive rollers 531 and 532 and the second drive rollers 533 and 534 use water-absorbing rollers made of the same material as the third drive rollers 535 and 536 and the fourth drive rollers 537 and 538, It is considered not to damage the thin plate. A safety cover 55 covering the drive rollers 531 to 538 is detachably disposed.

  Next, operation | movement of such a thin plate washing | cleaning drying apparatus 1 is demonstrated. Before the thin plate 10 is washed, it is necessary to store the alkaline ionized water L5 in the circulation tank 3 and heat it to a predetermined temperature. While supplying water L1 containing an electrolyte to the electrolyte chamber 211 of the electrolytic cell 21, a voltage is applied to the anode electrode 215 and the cathode electrode 216, and a direct current is passed through the water in the electrolytic cell 21 to perform electrolysis. In the anode chamber 212, cations such as metal ions are attracted and increased by the anode electrode 215, and alkali ion water having a high pH is generated. On the other hand, in the cathode chamber 213, anions are attracted to the cathode electrode 216 to generate acidic water having a low pH. The alkaline ionized water generated in the anode chamber 212 is temporarily stored in the water storage tank 22 and is circulated with the anode chamber 212 by the pump 24 to become alkaline ionized water L4 whose pH is increased. Thereby, alkaline ionized water having a pH of 12.1 or more can be produced. The level of the alkaline ionized water L5 stored in the circulation tank 3 is measured by a water level meter (not shown). When the water level falls below a certain level, the valve 25 is opened, and the alkaline ionized water L4 in the storage tank 22 is transferred into the circulation tank 3. To flow down. In this way, the alkali ion water L5 having a constant water level is stored in the circulation tank 3. Moreover, the heating apparatus 4 is operated and the alkaline ionized water L5 in the circulation tank 3 is heated to a certain temperature.

  After the alkaline ionized water L5 in the circulation tank 3 reaches a predetermined temperature, the thin plate cleaning / drying apparatus 1 is operated. When the thin plate 10 to be cleaned is placed on the free rollers 511 to 514 at the entrance, the limit switch is activated, the first to fourth drive rollers 531 to 538 are driven to rotate, and the circulation pump 61 is driven, Alkaline ion water L6 whose pressure has been increased by the circulation pump 61 from the nozzle 66 is jetted as a shower L7, and the operation is started.

  In this state, when the leading end of the thin plate 10 is inserted into the first drive rollers 531, 532, the thin plate 10 is transported by the first drive rollers 531, 532, and then transported by the second drive rollers 533, 534. Before and after the second drive rollers 533 and 534, the shower L7 is sprayed from both sides of the thin plate 10 from the nozzle 66, the oil stain on the surface of the thin plate 10 is emulsified with alkaline ionized water, dust and the like are removed by the pressure of the spray, and the thin plate A cleaning process is performed in which both sides of the 10 are cleaned. By spraying the shower L7 onto the thin plate 10, not only the thin plate 10 is washed, but also the thin plate 10 is heated by the heat of the shower L7. The heated alkaline ionized water shower water L7 is returned to the circulation tank 3 through the funnel 31 as the alkaline ionized water L8 in which the oil is emulsified when the thin plate 10 is washed.

  When the thin plate 10 cleaned by the shower L7 passes through the first water-absorbing rollers 71 and 72 as the third driving roller, the water droplets adhering to the upper and lower surfaces are absorbed by the water-absorbing rollers 71 and 72, and the surface of the thin plate 10 is absorbed. It remains as a very thin water film. Since the thin plate 10 is heated, the thin water film evaporates between the first water absorption rollers 71 and 72 and the second water absorption rollers 73 and 74 while the thin plate 10 is conveyed, and almost disappears. The remaining water film is almost absorbed by the next second water-absorbing rollers 73 and 74, and when it is carried out from the second water-absorbing rollers 73 and 74 and sent to the free rollers 517 to 519 on the carry-out side, it is almost completely dried. It becomes a state. Furthermore, the water film may evaporate when it is placed on the free rollers 517 to 519, and thus the drying is performed completely.

  For this reason, the thin plate cleaning / drying apparatus 1 of the present embodiment is not particularly provided with a drying means. By using alkaline ionized water having excellent detergency despite very few impurities, water droplets can be removed only by wiping and natural drying without using a drying means. In the case of washing using a detergent, a rinsing process and a drying process for removing the remaining detergent are required, and the apparatus becomes large and expensive.

  When the alkaline ionized water L5 being circulated during use is evaporated and the water level is lowered, the water level gauge operates to open the valve 25, and the alkaline ionized water L4 produced by the electrolytic cell 21 from the water storage tank 22 is It flows into the circulation tank 3 and compensates for the amount reduced by evaporation.

  Actually, the steel plate that had been punched out by a punching machine using the thin plate cleaning and drying apparatus shown in FIG. 2 and the processing oil adhered to the surface was cleaned. The dimensions of the equipment used were 170 cm × 99.5 cm. The entire device is installed on a carriage and is movable. An electrolytic cell 21 is disposed on the right front surface of the apparatus 1, and a water storage tank 22 is disposed behind the electrolytic cell 21. The control panel 43 is installed on the left front surface of the apparatus 1, and the circulation tank 3 is arranged on the center left of the apparatus.

  The alkaline ionized water L4 stored in the water storage tank 22 had a pH of 12.5, colorless, odorless and non-irritating, zero BOD and COD, zero oxide and organic ions. The heating set temperature of the circulating water L5 stored in the circulation tank 3 was set to 60 ° C.

  When the iron plate having a thickness of about 1 mm was washed, no oil adhered to the finished iron plate, and the iron plate carried out from the second water-absorbing rollers 73 and 74 was completely dried, and heat as hot was left. . Further, when the first water-absorbing rollers 71 and 72 were exited, a thin water film was seen on the surface of the iron plate, but the water film was evaporated and disappeared before the second water-absorbing rollers 73 and 74.

  Even during long-term operation, the water absorption power of the first water absorption rollers 71 and 72 did not decline. When used for a long period of time, it is considered that an equilibrium state is reached where the amount of water wiped off by the latent heat of the heated alkaline ionized water and the amount of water evaporated are substantially the same. Therefore, a squeeze roller that is normally used in a pair with a water absorption roller is unnecessary. However, in some cases, a squeeze roller may be used.

  Moreover, although the circulating water L5 was observed to be cloudy, no change was observed in the cleaning power and finishing. When using for a long time, you may make it provide the deoiling apparatus which removes the oil component which has become emulsion in the circulation tank 3. FIG.

  The thin plate to be cleaned by the thin plate cleaning / drying apparatus 1 can be applied to iron plate and other steel plate processed products after punching, cleaning of plastic plates and glass plates. In the above description, two sets of a pair of upper and lower water absorbing rollers are used, but three or more sets may be arranged. The description of the alkaline ionized water production apparatus is an example, and other structures may of course be used.

The thin plate cleaning and drying apparatus of the present invention can be used in fields such as cleaning of metal plates after sheet metal processing.
The thin plate cleaning and drying method of the present invention can be used in fields such as cleaning of metal plates after sheet metal processing.

1: Thin plate washing and drying device 2: Alkaline ion water production device 21: Electrolysis tank 22: Water storage tank 3: Circulation tank 4: Heating device 41: Heater 5: Transport device 535: Third transport roller 536: Third transport roller 537 : Fourth transport roller 538: Fourth transport roller 6: Jetting device 61: Circulation pump 66: Nozzle 7: Water absorption / drying device 71: First water absorption roller 72: First water absorption roller 73: Second water absorption roller 74: Second Water absorption roller

Claims (5)

  Alkaline ion water production apparatus, heating apparatus for heating alkaline ion water produced by the alkaline ion water production apparatus, conveyance apparatus for conveying a thin plate to be cleaned, and conveyance of the heated alkaline ion water A jetting device that sprays on both sides of the thin plate being conveyed by the apparatus, and a pair of water absorption rollers that constitute part of the conveying device and convey the thin plate while wiping both sides of the thin plate to which the heated alkaline ionized water has adhered A thin plate cleaning / drying device comprising a water absorption / drying device in which two or more sets are disposed.   The said heating apparatus is provided in the circulation tank which stores the alkali ion water sent from the said alkali ion water manufacturing apparatus, and the alkali ion water injected by the said injection apparatus. The thin plate washing and drying apparatus described.   When the thin plate is conveyed by the two or more sets of water absorbing rollers, the alkali ion water on the surface of the thin plate evaporates and dries by the residual heat of the thin plate heated by the heated alkaline ion water. The thin plate washing and drying apparatus according to claim 1 or 2.   A cleaning process in which the heated alkaline ionized water is sprayed onto the thin plate to clean it, a wiping process in which the thin plate is wiped with a water absorbent, and the residual heat of the thin plate heated by the warmed alkaline ionized water And a drying step for drying the thin plate.   The method for washing and drying a thin plate according to claim 4, wherein the pH of the alkaline ionized water is 12.1 or higher.

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