JPH0441988Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial fields of application> This invention uses ultrasonic waves in the process of cleaning objects with a wide planar area such as silk screen plates, which are used in many manufacturing fields. Ultrasonic cleaning reduces the time required for the cleaning action obtained by energy to reach the inside of the dirt to be removed, and reduces the impact on the object by immersing it in the cleaning solution, resulting in more efficient cleaning. It is related to the device.

<Summary of the idea> In order to obtain a cleaning effect using ultrasonic energy, ultrasonic energy must have a chemical effect that penetrates and dissolves the dirt to be removed and prevents the dirt from re-adhering to the object being cleaned. It is common to use a cleaning solution together.

In the above case, the chemical actions such as penetration, dissolution, and prevention of re-adhesion are performed from the surface of the dirt to be removed, so the partially contaminated cleaning solution diffuses and new cleaning solution remains. It takes time to repeat the process to work on the stains that are present.

The present invention uses an external pump to form a flow of the cleaning liquid along the contaminated object to forcefully and continuously diffuse the partially soiled cleaning liquid. This is followed by rinsing, which allows the adjoining cleaning tank to completely remove dirt that has reattached to the object during the main cleaning.

<Prior art> In ultrasonic cleaning machines that have been automated, the object to be cleaned is placed in a vacuum cleaner for the purpose of applying fresh cleaning liquid to dirt and at the same time eliminating uneven cleaning caused by the wavelength of ultrasonic waves. The method used is to store it in a container and swing it. In this case, not only is a complicated mechanism required for rocking, but also it may not always be possible to generate an effective flow along the object to be cleaned.

<Function> Even when a large amount of dirt adheres to a part of a surface-shaped object to be cleaned, fresh cleaning liquid is continuously applied to the surface of the remaining dirt, so that the surface of the object to be cleaned is partially covered. Even when a large amount of dirt is attached, more complete cleaning can be achieved in a short time.

Therefore, the efficiency of cleaning is improved and damage to the object to be cleaned caused by being immersed in the cleaning liquid is reduced.

<Example> In the drawings, the same numbers indicate the same parts in FIGS. 1 and 2. In FIG. 1, an ultrasonic vibration box 4 is installed in the propagation tank 1, which generates acoustic ultrasonic vibrations by being driven by the output of an electric ultrasonic generator (not shown).

Ultrasonic waves (cavitation) irradiated into the propagating liquid 5 from the ultrasonic vibration box 4 are transmitted through the propagating liquid 5 to the main cleaning liquid 6 and the rinsing cleaning liquid 7, thereby cleaning the silk starne liquid 8. In order to increase the cleaning effect by diffusing the dirt dissolved and peeled off by ultrasonic waves (cavitation) and cleaning liquid (organic solvent, etc.) in the main cleaning liquid 6, which contains the most dirt during ultrasonic cleaning, the liquid The circulation pump 9 sucks in and pressurizes the liquid from the lower liquid inlet 10 of the main cleaning tank 2 through the main washing tank suction valve 11 and the suction pipe 12 through the discharge pipe 13 and the discharge valve 14 to the upper liquid discharge port. 15 into the main cleaning liquid 6. At this time, a flow is forcibly created in the cleaning liquid, and the flow of this liquid diffuses dirt and increases the cleaning effect. While the main cleaning liquid 6 is being circulated, the lower suction valve 16 of the rinse tank 3 is closed.

Next, when the liquid is forcibly drained by the circulation pump 9, the main cleaning tank drain valve 17 is opened to drain the liquid.
However, when draining the liquid to a location higher than or far from the upper liquid discharge port 15, the liquid drain pressure at the main cleaning tank drain valve 17 becomes higher than the upper liquid discharge port 15 (at this time, the liquid is discharged from the drain valve 17). The liquid is not drained and circulates in the main cleaning tank 2 as described above.) Therefore, open the valve operation door 30 attached to the front of the device and close the discharge valve 14. By closing, the liquid can be drained under the pressure of the circulation pump 9 through the drain valve 17 to high and remote locations.

Note that after draining the main cleaning liquid 6, the rinsing liquid 7 is used as the main cleaning liquid, so the circulation pump 9
The pressurized liquid is sucked in by the circulation pump 9 from the lower liquid suction port 18 of the rinse tank 3 through the rinse tank liquid suction valve 16 and the suction pipe 12, and is then transferred to the main cleaning tank 1 from the upper discharge port 15 through the discharge pipe 13 and the discharge valve 14.
It is also possible to transfer the rinsing liquid 7 inside. At this time, the main cleaning tank suction valve 11 and drain valve 17 are closed, and the rinse tank liquid suction valve 16 and discharge valve 14 are opened.

In addition, the above manual valve (main cleaning tank suction valve 1)
1, discharge valve 14, rinse tank suction valve 16,
Replace the drain valve 17) with a solenoid valve, switch,
It shall also be possible to operate by electrical control such as relays.

The main cleaning tank drain valve 19 and the rinse cleaning tank drain valve 20 are valves for discharging the filth settled at the bottom of the tank after draining. Further, the propagation liquid drain valve 21 is for draining the propagation liquid 5.

Float tank 22, 2 attached to the side of the device
3 is a float tank 2 to prevent the circulation pump 9 from running dry when the liquid becomes less than the lower suction port 10 of the main cleaning tank and the lower suction port 18 of the rinse tank.
Circulation pump 9 by installing micro SW etc. in 2 and 23
This is a safety feature that automatically turns off the power to prevent idle running.

The main cleaning tank 2 has a structure that has a minimum margin to allow the flat part of the silk screen plate that is the object to be cleaned to be immersed in the main cleaning liquid 6, so that the main cleaning liquid 6 flows along the flat part. .

<Effects> As described above, according to the present invention, a flat plate-shaped object to be cleaned is cleaned using ultrasonic energy from an adjacent vibrating tank, and the first main cleaning is performed on the object to be cleaned. The cleaning liquid is forced to circulate along the surface of the object to efficiently remove the dirt adhering to the surface of the object to be cleaned, and then the object to be cleaned is rinsed and the re-attached dirt is completely removed with new cleaning liquid. Moreover, the rinsing liquid can be sent to the main washing tank and reused after the main washing liquid is discarded as appropriate, so that the cleaning cost can be suppressed.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the present invention, and FIG. 2 is a front view of the present invention. 1 is a propagation tank, 2 is a main cleaning tank, 3 is a rinse tank, 4 is an ultrasonic vibration box, 5 is a propagation liquid, 6 is a main cleaning liquid, 7 is a rinse cleaning liquid, 8 is a silk screen plate, 9 is a circulation pump, 10 is a main cleaning tank lower liquid suction port, 11 is a main cleaning tank suction valve, 12 is a suction pipe, 13 is a discharge pipe, 14 is a discharge valve, 15 is an upper liquid discharge port, 16 is a rinse cleaning tank lower suction valve, 17 18 is the main cleaning tank drain valve, 18 is the valve operation door, 19 is the main cleaning tank drain valve, 20 is the rinse cleaning tank drain valve, 21 is the propagation liquid drain valve, 2
2 and 23 represent float tanks.

Claims (1)

[Claims for Utility Model Registration] 1. In an apparatus for cleaning objects to be cleaned using ultrasonic energy, a first container containing a cleaning liquid for main cleaning of objects to be cleaned;
a second cleaning tank containing a cleaning liquid for rinsing the objects to be cleaned; a vibration tank in contact with each cleaning tank and having an ultrasonic vibration device immersed in the propagating liquid; The tank is equipped with a pump device for feeding the internal cleaning liquid, and the first cleaning tank is configured to control the cleaning liquid so that the cleaning liquid is sucked in from one end of the object to be cleaned and discharged to the other end to circulate the cleaning liquid inside the cleaning tank. an ultrasonic cleaning apparatus comprising: a plurality of control valve devices for performing control so that the cleaning liquid used for rinsing and cleaning can be sent to the second cleaning tank as appropriate to the first cleaning tank; 2. A utility model characterized in that the object to be cleaned is a plate-shaped object, and the cleaning tank is formed in a size slightly larger than the object to be cleaned so that the internal cleaning liquid flows along the flat surface of the object to be cleaned. An ultrasonic cleaning device according to registered claim 1. 3. The ultrasonic cleaning according to claim 1 of the registered utility model claim, characterized in that the cleaning liquid in the cleaning tank can be drained to the outside by appropriately controlling the liquid feeding of the pump device with a control valve device. Device.