JPH09239332A - Washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washer capable of being repeatedly used for a long period of time by eliminating a vicious circle of contamination thereby reducing the contamination of relatively expensive rinse water and pure water to be used after primary washing as much as possible. SOLUTION: This washer includes a washing tank 2 provided with a holding means for holding a basket housing workplaces to be washed therein and having a liquid discharge port 1 in the lower part thereof, and a distribution valve mechanism 3 installed in the liquid discharge port 1. The distribution valve mechanism 3 is provided with at least three distribution valves DV1, DV2, DV4, and each distribution valve is selectively connected to the discharge port 1. Liquid tanks 11, 12, 14 separately formed are connected to the distribution valves DV1, DV2, DV4, through exclusive dusts respectively. Furthermore, sending ducts for sending out liquid from these tanks to the washing tank 1 are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus suitable for cleaning small parts of electric wiring boards, electric devices, electronic devices, small parts of precision machines and the like.

[0002]

2. Description of the Related Art Conventionally, in many cases, the cleaning of precision small electronic components as described above is performed by performing a primary cleaning with an undiluted cleaning solution, rinsing with a rinsing solution, and finally a final cleaning with pure water. . After being used, the cleaning stock solution, rinse solution and pure water are collected in dedicated storage tanks and used repeatedly.

[0003]

However, in the conventional cleaning apparatus, the primary cleaning stock solution tank, the rinse tank, and the supply / exhaust ducts from the pure water tank to the cleaning tank have many common parts. Even if the rinse liquid is supplied after cleaning the above, the dirty first cleaning stock solution adhering to the duct or the cleaning tank contaminates the rinse liquid itself, and the contaminated rinse also contaminates the next pure water. The service life of each is shortened.

In view of this, the present invention eliminates such a vicious cycle of contamination, and reduces the contamination of the relatively expensive rinsing liquid and pure water used after the primary cleaning as much as possible, and can be used repeatedly over a long period of time. The main purpose is to provide an economical cleaning device with a simple structure.

[0005]

In order to achieve the above object, in a cleaning apparatus according to the present invention, a holding means for holding a bucket for storing a work to be cleaned is provided inside and a lower portion is provided. A cleaning tank 2 having a liquid outlet 1 at
And a distribution valve mechanism 3 installed at the liquid discharge port 1. The distribution valve mechanism 3 includes at least three distribution valves DV1, DV2, DV.
4 and each distribution valve selectively has the outlet 1
Are formed so that they can be connected to the respective distribution valves DV
Liquid tanks T1, T2, T4, which are separately formed, are connected to 1, DV2, DV4 via dedicated ducts, and a delivery duct for sending liquid from each of these tanks to the cleaning tank 1 is provided. The structure has been formed.

The work held by the work holding means in the cleaning tank 2 is preferably formed so as to rotate or repeatedly rotate around the rotation axis, and the work is ultrasonically cleaned inside the cleaning tank. It is advisable to install an ultrasonic transmitter (31) for this purpose.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral (2) is a cleaning tank having a liquid discharge port (1) at the bottom, and is installed in the casing frame (4). The upper surface of the cleaning tank (2) is open and closed by a lid (5) which can be opened and closed. Holding means (A) for holding an object to be cleaned, that is, a work is installed inside the cleaning tank (2). In the embodiment shown in FIG. 1, a rotating disc (23) is provided to the left and right in the cleaning tank so as to rotate by a horizontal rotating shaft (24), and the left and right rotating discs (23), (23)
There are several hanging rods (25) on the bridge. Then, the bucket (26) is rotatably hung on the hanging rod (25) so that the work stored in the bucket can be rotated together with the rotating disk or repeatedly rotated without changing the vertical posture. It has become. Further, the rotating shaft (24) has a hollow inside, and a washing tank (2) for washing undiluted solution and rinse solution described later is provided.
It also serves as a duct for supplying to this rotating shaft (24)
In addition, the liquid is ejected from nozzles (28) and (29) provided on the lid (5). An ultrasonic wave generator (31) is provided on the inner bottom of the cleaning tank 2. Incidentally, in the figure (27)
Is a motor for rotating the rotating disk.

Reference numeral (3) is a liquid discharge port of the cleaning tank (2).
The distribution valve mechanism installed in (1),
The distribution valve mechanism (3) indicated by consists of four distribution valves (DV1), (DV2), (DV3), (DV4) from the first to the fourth, and one of the selected distribution valves is When opened, the other distributor valve is formed to be closed. Distribution valve (DV1), (DV2), (DV3), (DV
The operating order of 4) is a controller (not shown) provided separately.
Is electrically controlled by Such control can be easily achieved by, for example, a combination of a conventionally known limit switch and a relay or computer control.

Then, a stock solution tank (T1) for primary cleaning is connected to the distribution valve (DV1) through a dedicated return duct (11), and a delivery duct (12) is provided from the stock solution tank (T1). ) Is connected to the cleaning tank (2). A circulation circuit (13) is formed in the middle of the delivery duct (12). This circulation circuit (1
3) is a three-way valve (V1) to the first pump (P1), filter
(F) to the cleaning tank (2), and a path from the cleaning tank (2) to the three-way valve (V1),
The stock solution sent to (2) can be circulated and filtered with a filter (F).

The distribution valve (DV2) is connected to the first rinse tank (T2) via a dedicated return duct (14), and the first rinse tank (T2) is connected to the delivery duct (15). Cleaning tank
It is connected to (2). Further, the distribution valve (DV3) is connected to a second rinse tank (T3) through a dedicated return duct (16), and the washing tank (2) is connected from the second rinse tank (T3) through a delivery duct (15). )It is connected to the. Further, the distribution valve (DV4) is connected to a pure liquid tank (T4) via a dedicated return duct (17), and from the pure liquid tank (T4) to a cleaning tank (2) via a delivery duct (18). It is connected. A second pump (P2) and a third pump (P3) are installed in the middle of the rinse delivery duct (15) and the pure liquid delivery duct (18).

Further, warm air for drying is blown into the cleaning tank (2) from a blower (19) through a heater (20) through a warm air blowing port (30) provided in a lid (5). Is formed. Reference numeral (32) indicates a ventilation exhaust port that operates during the drying operation using warm air.

In the above structure, the object to be cleaned is stored in the bucket (26) in the cleaning tank (2), and the rotary disk (23) is rotated or repeatedly rotated. The stock solution for cleaning is supplied from the stock solution tank (T1) into the cleaning tank (2) through nozzles (28) and (29) for cleaning. At this time, the undiluted solution sent to the washing tank (2) is circulated by the circulation circuit (13) and is filtered.
Try to filter with (F). After cleaning for a certain period of time, the distribution valve (DV1) of the distribution valve mechanism (3) is selected and opened,
The stock solution in the cleaning tank (2) is returned to the stock solution tank (T1). Next, the distribution valve (DV2) is selected, the first rinse is supplied from the first rinse tank (T2) to the cleaning tank (2), and the object to be cleaned and the inside of the cleaning tank are lightly rinsed, and then the distribution valve (DV3 ) Operates to supply the second rinse from the second rinse tank (T3) to the cleaning tank (2) to rinse the object to be cleaned. Finally, the distribution valve (DV4) is opened, and pure water is supplied from the pure water tank (T4) to the cleaning tank (2) for finish cleaning. This cleaning with pure water may be performed by keeping the distribution valve mechanism in the closed position and collecting pure water in the cleaning tank (2) for a certain period of time. After this cleaning, the distribution valve (DV4) is selected and the pure water in the cleaning tank (2) becomes pure water (T4).
Refluxed. After this, blower (19) to heater (20)
Hot air is blown into the cleaning tank (2) through the to dry the object to be cleaned.

In the above embodiment, it is designed so that water can be supplied from the water faucet (21) to the cleaning tank (2) through the three-way valve (V2), so that tap water can be used for cleaning. It has become. Further, the discharge duct (22) is branched from the middle of the stock solution return duct (11) through the three-way valve (V1) so that a harmless cleaning solution that can be discharged to the outside can be discharged.

In any of the above-mentioned cleaning processes,
For example, in the first cleaning process with the undiluted cleaning solution, if necessary, the ultrasonic wave transmission device (31) is operated to simultaneously perform ultrasonic cleaning, so that more effective cleaning can be performed.

The bucket (26) mounted in the cleaning tank (2) is a cylindrical bucket (26a) as shown in FIG.
Or, a rectangular box-shaped bucket (26b) as shown in FIG.
The object may be attached by directly holding it on the left and right rotating discs (23), (23).

7 and 8 show another embodiment of the distribution valve mechanism (3). The distribution valve mechanism (3) is
Four distribution valves (DV1), (DV2), (DV3), (DV) from 1st to 4th, which are arranged at appropriate intervals on a horizontal slide plate (3a)
V4) and a closing part (3b) are provided, and each distribution valve is horizontally movable so that it can be selectively connected to the discharge port (1). The slide plate (3a) is supported by a plurality of receiving rollers (6) ... and the gear (7) from the motor (M),
It is formed so as to move via (8), (9) and the rack (10). Therefore, the slide plate (3
By moving a) by the set value, the desired distribution valve could be connected to the liquid outlet (1).

Although a typical embodiment of the present invention has been described above, the present invention is not necessarily limited to the structure of the above embodiment. For example, the first described in the above embodiment
And the second rinse liquid, that is, the first rinse liquid tank (T
2) Any one of the second rinse tank (T3) may be omitted. Further, the cleaning liquid used is arbitrarily selected according to the object to be cleaned and is not specified. In addition, the present invention can be implemented by appropriately modifying it within the scope of having the constituent features of the present invention and having the effect.

[0018]

As described above in detail, in the present invention, since each distribution valve of the distribution valve mechanism is connected to each liquid tank via a dedicated duct, a common duct for liquid circulation after cleaning is provided. It is no longer used and dirty liquid is mixed into the next cleaning liquid and is not contaminated sequentially, which allows the cleaning liquid to be used economically for a long time,
Moreover, although at least three or more cleaning liquids are used properly, the use of the distribution valve mechanism simplifies the piping to each tank, resulting in cost reduction and easy maintenance. In addition, even though a plurality of different cleaning liquids are used, the cleaning tank can be formed by only one tank, so that the cleaning tank can be made compact and lightweight and can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an embodiment of a cleaning device according to the present invention as viewed from the side.

FIG. 2 is a schematic view of a distribution valve mechanism portion of the cleaning device as viewed from above.

FIG. 3 is a partial cross-sectional view of a main part of the cleaning device viewed from the front.

FIG. 4 is a schematic piping diagram of a cleaning device according to the present invention.

FIG. 5 is a cross-sectional view showing another attachment means of the work storage bucket in the cleaning device.

FIG. 6 is a cross-sectional view showing still another attachment means of the work storage bucket in the cleaning device.

7 is a sectional view similar to FIG. 1, showing another example of the distribution valve mechanism portion of the cleaning device according to the present invention.

FIG. 8 is an enlarged side view showing a drive section of the valve arrangement mechanism portion.

[Explanation of symbols]

 (1) Liquid outlet (2) Cleaning tank (3) Distribution valve mechanism (23) Rotating disk (24) Rotating shaft (DV1), (DV2), (DV3), (DV4) Distribution valve (T1), ( (T2), (T4), (T4) liquid tank

Claims (3)

[Claims] 1. A cleaning tank 2 having a holding means for holding a bucket for storing a work to be cleaned therein and having a liquid discharge port 1 at a lower part thereof, and a distribution valve installed at the liquid discharge port 1. Mechanism 3 and said distribution valve mechanism 3 comprises at least 3
One or more distribution valves DV1, DV2, DV4 are provided and each distribution valve is formed so as to be selectively connectable to the discharge port 1, and each of the distribution valves DV1, DV2, DV4 is provided with a dedicated duct. A cleaning device to which liquid tanks T1, T2, T4 formed separately are connected, and further, a delivery duct for sending the liquid from each of these tanks to the cleaning tank 1 is individually formed. 2. The work holding means provided in the cleaning tank 2 is a left and right rotary disc that rotates around a horizontal rotary shaft 24.
The cleaning device according to claim 1, wherein the cleaning device is formed by 23, 23 and a bucket directly or indirectly supported by these rotating disks. 3. The cleaning device according to claim 1, wherein an ultrasonic wave transmitting device for ultrasonically cleaning the work is installed inside the cleaning tank.