JPH05293451A - Continuous ultrasonic washing apparatus - Google Patents

Abstract

PURPOSE:To enhance washing efficiency, to shorten a washing time and to achieve marked miniaturization by constituting the title apparatus of a washing tank permitting a net conveyor to pass and having an ultrasonic vibrator arranged thereto, a washing solution receiving and storing tank and a washing solution circulating means and arranging a washing solution heating device. CONSTITUTION:A continuous ultrasonic washing apparatus has an inlet 6a and an outlet 6b provided to the tank body part thereof and feeds an object 2 to be washed. A washing tank 3 constituted so that a lower net conveyor 1b and the upper net conveyor 1a opposed to the upper net conveyor 1b and driven in synchronous relation to the conveyor 1b are made possible to pass through the tank body part and ultrasonic vibrators 4 are arranged in opposed relation to the net conveyors 1a, 1b is provided. A washing solution receiving and storing tank 9 is provided under the washing tank 3 so as to receive the washing solution 5c flowing out from the net conveyor inlet and outlet 6a, 6b of the washing tank 3 and the washing solution 5b in the washing solution receiving and storing tank 9 is supplied to the washing tank 3 by a circulating pump 10 and a heater 8 is arranged as the heating device of the washing solution 5b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a magnet after grinding,
Ultrasonic cleaning equipment that continuously cleans various objects to be cleaned, such as extremely rusty objects such as various metal workpieces, tubular objects with one end blocked, and workpieces that are difficult to clean, such as ultrasonic A cleaning liquid storage tank is installed below the cleaning tank where the vibrator is placed, and a net conveyor, a net conveyor using a holding net for fixing the object to be cleaned, or a pair of upper and lower net conveyors that are electrically driven synchronously oppose each other. Continuous ultrasonic cleaning that does not generate water droplets due to forced drying using a blower with a high flow rate, by moving the cleaning tank to reduce the size of the cleaning tank and shortening the cleaning line. Regarding the device.

[0002]

2. Description of the Related Art On an industrial scale, an ultrasonic cleaning apparatus as shown in FIG. 3 has usually been used for continuously cleaning a ferrite magnet or the like after grinding. That is, the cleaning target 2 placed on the endless net conveyor 1
A structure in which a cleaning liquid 5 made of water or the like is passed between a pair of ultrasonic transducers 4 and 4 arranged in a cleaning tank 3 and ultrasonic waves acting on an object to be cleaned 2 at that time remove stains and the like. It consists of

However, in the conventional structure, in consideration of damage due to rolling of the object to be cleaned 2 placed on the endless conveyor 1, the carry-in angle to the cleaning tank 3 and the carry-out angle after cleaning become gentle. Inevitably, the inclined portions 1c and 1d of the net conveyor 1 are long. For this reason, the length of the cleaning tank 3 becomes long and it is impossible to downsize the entire apparatus. Also,
Since the conveyor 1 has the inclined portions 1c and 1d, the rolling cannot be completely prevented depending on the shape of the object 2 to be cleaned, and the object 2 to be cleaned easily bites into the net portion, and cracks, cracks, etc. There was a problem to occur.

Therefore, the applicant previously provided a cleaning liquid storage tank having a cleaning liquid replenishing function to the cleaning tank below the cleaning tank in which the ultrasonic transducer is arranged, and linearly passes through the net conveyor to remove the cleaning tank. Proposed a continuous ultrasonic cleaning device that achieved downsizing and shortening of the cleaning line (Japanese Patent Application No. 2-304722).
No.)

[0005]

On an industrial scale, such ultrasonic cleaning is required to be completed efficiently and quickly without deteriorating the cleaning ability. However, in order to increase the efficiency, the conveyor speed is increased or forced. Due to the drying, there are problems such as movement of the object to be cleaned on the conveyor or generation of scratches and chips. When the object to be cleaned is a small object such as an electronic component or a light weight, there is a problem that the order is changed by moving due to vibration during ultrasonic cleaning. Further, as a cleaning liquid for cleaning an object to be cleaned, a solvent such as water, pure water, chlorofluorocarbon, or methanol is selectively used in consideration of the material of the object to be cleaned.

In particular, when cleaning precision electronic parts such as ceramics, etc., in consideration of quality and reliability after cleaning,
A solvent such as methanol or chlorofluorocarbon was often used in order to prevent generation of water stains called spots and watermarks after washing. However, in recent years, the use of CFCs has been temporarily regulated due to problems such as global environmental pollution, and so-called CFC substitutes are being developed.However, there are few that are comparable to CFCs with high vaporization rate and small surface tension, and in large quantities. And it is not offered cheaply. Therefore, it would be extremely convenient if water or pure water could be used for cleaning the above electronic parts.

According to the present invention, the length of the cleaning tank can be shortened to reduce the size of the entire apparatus, and the object to be cleaned can be prevented from being damaged without providing an inclined portion on the net conveyor for transferring the object to be cleaned. In the ultrasonic cleaning device, the cleaning property of the object to be cleaned is further improved and the holding and transporting property is excellent, the conveyor speed is increased and forced drying is possible, and even when water or pure water is used as a cleaning liquid, after cleaning It is an object of the present invention to provide a continuous ultrasonic cleaning apparatus having a structure that does not generate water droplet marks and the like and that can clean an extremely rusty object with water.

[0008]

As a result of various studies on the structure of the continuous ultrasonic cleaning device for improving the cleaning property and the holding / transporting property of the cleaning object, the present invention individually provides the net conveyors for transporting the cleaning object. By placing a holding net or using a holding net conveyor that is synchronized with this, it is possible to carry small objects to be cleaned, whether they are being transported, a pre-cleaning shower before cleaning, ultrasonic cleaning, etc. Stable retention is possible without the movement of water, forced drying using a blower with a high flow rate is possible, no water droplets are generated even after cleaning with cleaning water, and cleaning performance is improved by heating the cleaning solution. It was found that the water drainage became better. Further, the present invention, as a result of various studies aimed at a configuration that makes it possible to wash things that are extremely rusty with water etc.,
Seal the cleaning tank to explode it with an inert gas, supply oxygen-free water, and seal the cleaning tank and the cleaning liquid storage tank in which the blower and dryer are installed to control the atmosphere and blown gas in the tank. The inventors have completed the present invention by finding that it can be washed without causing rust by flowing it as an inert gas and using oxygen-free water or pure water as the washing liquid.

That is, according to the present invention, a net conveyor for providing an object to be cleaned with a holding net for fixing can be moved through the tank abdomen by providing an inlet / outlet hole in the tank abdomen, or an inlet / outlet hole is provided in the tank abdomen. An ultrasonic vibrator provided with a lower net conveyer for conveying an object to be cleaned and an upper net conveyor facing the lower net conveyor and synchronously driving the tank abdomen through the tank abdomen, and facing the net conveyor in the tank. And a cleaning liquid storage tank which is located below the cleaning liquid tank and stores the cleaning liquid flowing out from the net conveyor inlet / outlet holes of the cleaning liquid tank, and the cleaning liquid in the cleaning liquid storage tank is supplied to the cleaning liquid tank. And a cleaning liquid heating device is arranged, and / or the cleaning liquid storage tank has a substantially closed structure so that the cleaning liquid storage tank can be purged with an inert gas. That is a continuous ultrasonic cleaning apparatus.

According to the present invention, in the above construction, the ultrasonic cleaning oscillator and / or the blower nozzle is provided with a distance adjusting mechanism with respect to the object to be cleaned, and the cleaning solution in the cleaning tank and / or the cleaning solution storage tank is not affected. The continuous ultrasonic cleaning device is characterized in that it is equipped with a device for blowing an active gas and that the cleaning liquid is oxygen-free water or pure water.

In the present invention, the object to be cleaned is not only the ferrite magnet after grinding shown in one embodiment described later, but also various magnets, various ceramics, stone materials, glass, precision electronic parts, metal processed products, Targets individual pieces such as plastics.

Considering the material of the object to be cleaned and the like,
Water, solvent, etc. can be appropriately selected and used.
A cleaning liquid other than an organic solvent such as oxygen-free water, pure water, or CFC alternatives such as CFCs is desirable, and as will be described later, the continuous ultrasonic cleaning apparatus of the present invention does not generate a watermark or the like even when water is used. Further, if necessary, a step of degreasing with a solvent or the like can be provided in a pre-shower arranged outside the cleaning liquid storage tank.

In the present invention, the holding net for fixing may have any structure as long as the object to be cleaned can be held on the lower net conveyor by its own weight, and the holding net can be hooked on the net conveyor, It can also be attached and closed. The material of each net for the pressing and the conveyor is not particularly limited, but the configuration and opening shape of the net are selected according to the material, shape size, weight, etc. of the object to be cleaned, ultrasonic cleaning conditions, and operating conditions of the blower device. It is necessary to select the dimensions, and it is desirable to have a structure that allows the cleaning liquid to run out.

Further, in the present invention, it is essential that the upper net conveyor and the lower net conveyor which are opposed to each other continuously move at the same speed. Therefore, both conveyors should be moved at the same speed in the adjacent section of the upper and lower net conveyors. It is possible to employ a means for electrically controlling the motor, or mechanically synchronizing with a gear or the like. Further, the upper and lower net conveyors may have a space between which the object to be cleaned is sandwiched, and the setting may be appropriately changed depending on the size of the object to be cleaned. For example, the proximity distance between the upper and lower net conveyors may be set so that the object to be cleaned can be pressed by the upper net conveyor by its own weight. The material of the net is appropriately selected under the same conditions as the holding net.

In the present invention, in order to prevent drying in a short time and generation of stains and watermarks, it is possible to blow a high-speed blow to the object to be cleaned that has left the cleaning tank and has been cleaned. It is desirable to install a blower device for air or inert gas. Further, instead of the air blower, compressed air by, for example, an air compressor may be used. It is desirable that the flow velocity of the blower device is high in order to prevent the generation of stains and watermarks.
About 200 m / sec is preferable. That is, if the gas flow rate is too slow, stains and watermarks are likely to occur when water is used as the cleaning liquid, and if the flow rate is too fast, the object to be cleaned may move. The shape and configuration of the blower nozzle of the blower device and the arrangement and number thereof are appropriately selected according to the flow rate and the shape and size of the object to be cleaned. In order to prevent the occurrence of watermarks, for example, nozzles that blow out in a linear shape are arranged so as to face each other across the conveyor, and air or the like is blown from above and below the upper and lower net conveyors, or air or the like is blown at various injection angles. It is possible to adopt a configuration or a configuration in which a plurality of upper and lower blower devices facing each other are arranged at equal intervals in the traveling direction of the net conveyor. Furthermore, it is possible to adopt a configuration in which the distance of the nozzle to the net conveyor is variable.

What is particularly important in the blower device is the cleanliness of gas such as air itself, which greatly affects the generation of watermarks. Therefore, various known filters and air purifiers can be used depending on the required cleanliness. It is good to select and arrange appropriately. In addition, the blower device uses a chamber that is closed or has a part of the cleaning liquid storage tank side open,
In order to reduce the amount of cleaning liquid scattered in the chamber, it is also possible to actively exhaust the cleaning liquid. Further, it is also possible to adopt a configuration in which the cleaning liquid storage tank is substantially hermetically sealed to create an inert gas atmosphere inside the apparatus, and the inert gas is jetted from the inlet / outlet of the conveyor so as to prevent particles from entering.

In the cleaning apparatus of the present invention, in addition to a two-tank type cleaning tank consisting of a cleaning tank and a cleaning liquid storage tank, as shown in an embodiment described later, a preliminary shower such as a shower with water or a solvent is provided in front of the cleaning tank. Rotating brushes and flaps to prevent the washing liquid flowing out from the washing device or washing tank from leaking to the outside of the washing device, and other washing devices such as showers after the washing tank, drying devices such as heaters, heating of washing water and air, etc. By arranging a temperature control device, it becomes possible to promote the cleaning effect and realize drying in a short time. In the present invention, the cleaning liquid circulating means using the cleaning liquid storage tank is configured to circulate and replenish the cleaning liquid in the storage tank with the circulation pump of the embodiment described later, and further, only the inlet / outlet holes of the net conveyor using the lid. While slightly depressurizing the inside of the cleaning tank with the opening as the opening, the cleaning liquid jetting part is provided inside and outside the inlet and outlet holes of the cleaning tank to reduce the outflow amount of the cleaning liquid and stabilize the cleaning liquid surface level, or vice versa. Various configurations can be adopted, such as providing an opening at the bottom of the cleaning tank to increase the outflow amount and the circulating replenishment amount to positively clean the cleaning liquid in the cleaning tank. Further, it is advisable to appropriately select the pumping method, that is, the type and installation position of the circulation pump, and the position of the supply port of the cleaning liquid in the cleaning tank, depending on the use and the installation location of the device.

The present invention is characterized in that the cleaning liquid is heated to improve the cleaning property and to improve drainage after cleaning, and any known means may be used for the heating device depending on the cleaning liquid. As in the example, in addition to heating the cleaning liquid in the storage tank, the cleaning liquid in the cleaning tank can also be heated together.

Further, the present invention is characterized in that the inside of the substantially closed storage tank is made to have an inert gas atmosphere in order to wash the product that easily rusts with water, and in this case, the washing water contains oxygen-free water. preferable. In order to purge the inside of the nearly closed storage tank with an inert gas, it is necessary to replenish the inert gas with an appropriate amount so that the outside air does not enter by spouting an appropriate amount of the inert gas from the entrance of the conveyor. In addition to newly arranging the supply port of the above, it is possible to connect an inert gas supply source to the blower device and to use the detonation nozzle of the cleaning liquid described later as the supply port of the inert gas. When the inert gas supply source is not connected to the blower device, the blower device circulates and uses the inert gas in the storage tank, and it is desirable to sufficiently dry the inert gas before the circulatory use. In addition, in order to prevent rusting of the items to be cleaned, a storage tank with a lid is used to open only the inlet / outlet holes of the net conveyor, and the cleaning liquid in the storage tank is detonated and dissolved with an inert gas. It is advisable to reduce the amount of oxygen and reduce the amount of dissolved oxygen in the cleaning tank to 1% or less. Further, even in the cleaning tank, a means for blasting the cleaning liquid in the tank with an inert gas to replenish the oxygen-free water can be adopted.

Disclosure by Drawings FIG. 1 is a schematic explanatory view of a cleaning apparatus showing an embodiment of the present invention. In the cleaning tank 3, the objects to be cleaned 2 are placed on the lower net conveyor 1b and pressed by the upper net conveyor 1a so that they can be conveyed.
An inlet hole 6a and an outlet hole 6b are provided in the center of the tank abdomen so that 1b can be moved through in the left-right direction in the drawing of the tank abdomen. To be cleaned 2 between the lower net conveyor 1b and
Is configured to pass between a pair of ultrasonic transducers 4 and 4 arranged so as to face the upper and lower surfaces of the net conveyor 1a1b, and further to be carried out from the exit hole 6b. The upper net conveyor 1a is above the cleaning tank 3, and the lower net conveyor 1b is
Forms a loop around the cleaning tank 3, and although not shown, the upper net conveyor 1a and the lower net conveyor 1b are provided.
Are driven by individual motors, and each motor is controlled so as to be electrically synchronized. Here, nets made of stainless steel wire are used for the upper and lower net conveyors. Furthermore, the pair of ultrasonic transducers 4 and 4 has a configuration in which the distance between the transducers, that is, the distance to the object to be cleaned 2 can be freely set.

Although the cleaning liquid 5a is filled in the cleaning tank 3, the cleaning liquid 5a inevitably flows out from the inlet / outlet holes 6a and 6b of the cleaning tank 3, and the cleaning liquid 5a is left as it is.
It is not possible to maintain the proper amount and water level. Therefore, in order to maintain the cleaning liquid 5a in the cleaning tank 3 in an appropriate amount,
Below the cleaning tank 3, a cleaning liquid storage tank (hereinafter referred to as a storage tank)
9 is arranged, and a cleaning liquid circulating means for circulating and supplying the cleaning liquid 5b to the cleaning tank 3 by using a cleaning liquid circulation pump (hereinafter referred to as a circulation pump) 10 in the storage tank 9 is adopted.

More specifically, the cleaning liquid 5 in the storage tank 9
b is conveyed by a circulation pump 10 to a cleaning liquid replenishment gutter (hereinafter referred to as a replenishment gutter) 7 located above the cleaning tank 3 and is ejected from the jet outlets 8a, 8b near the inlet / outlet holes 6a, 6b of the upper and lower net conveyors 1a, 1b. It is jetted into the cleaning tank 3 toward the upper and lower net conveyors 1a and 1b. The jet outlets 8a and 8b may be located at any position as long as they are inside the cleaning tank 3, but as in the embodiment, downward jet outlets arranged near the inlet / outlet holes 6a and 6b are preferable. At this time, the cleaning liquid 5b is ejected in a so-called curtain shape from the downward ejection ports 8a and 8b.
It is possible to reduce the amount of the cleaning liquid 5c flowing out from the inlet / outlet holes 6a and 6b and maintain the proper amount of the cleaning liquid 5a in the cleaning tank 3. Especially upper and lower net conveyors 1a, 1b
It is desirable to select the replenishing amount of the cleaning liquid 5b, the replenishing pressure, etc. by the circulation pump 10 according to the size of the inlet / outlet holes 6a, 6b, that is, the outflow amount of the cleaning liquid 5a. Further, the cleaning liquid 5b may be applied to the outer peripheral portion of the storage tank 9 at 50 ° C., if necessary.
A heater 18 for heating and holding is installed in the cleaning tank 5 and the heated cleaning liquid 5b is supplied to the cleaning tank 3 by the circulation pump 10.
The cleaning ability is improved because it is carried to and discharged into the cleaning tank 3. Furthermore, since the cleaning liquid of the preliminary cleaning liquid shower is also heated by the heater 18, the cleaning performance is improved.

Here, the main body of the circulation pump 10 is the storage tank 9.
Although an example using a so-called submersible pump type disposed inside, that is, in the cleaning liquid 5b is illustrated, in the present invention, not only the configuration in which the circulation pump 10 main body is disposed in the storage tank 9 but also the storage The configuration may be arranged outside the tank 9, and it is desirable to select it according to the peripheral space, the shape and size of the storage tank 9, the shape and size of the circulation pump 10, and the like.
The cleaning liquid in the cleaning tank 3 and the storage tank 9 is filtered by a filter (not shown), a filter of a pump, or the like when being circulated, and fresh cleaning liquid may be replenished appropriately.
For example, as shown in the drawing, a required amount of water may be drained from the drain at the bottom of the storage tank 9, and a partial bypass replenishment may be performed from a fresh cleaning liquid shower 12b described later. In addition to the two tank structure of the cleaning tank 3 and the storage tank 9 of the present invention described above, a flap 11 for preventing the scattering of the cleaning liquid and a preliminary cleaning liquid shower 12a are arranged on the loading side (the right side in the drawing) of the cleaning tank 3, By providing a cleaning shower 12b for additional cleaning or rinsing, an air blower 13 for drying, a far-infrared heater 14 equipped with a blower (not shown), and the like on the left side in the drawing of the unloading side, the cleaning effect is promoted and effective. Drying can be realized.

The air blower 13 is an example in which three nozzles that blow out air linearly in the width direction of the net conveyor are arranged at equal intervals so that the spray distance and angle with respect to the object to be cleaned 2 can be freely set. It realizes a large amount and high-speed injection. Also, open the bottom of the chamber,
The cleaning liquid is configured to drop into the storage tank 9. Further, in order to control the speed of the net conveyors 1a and 1b according to the size, shape, amount, etc. of the object to be cleaned, the control means such as sensing by a thermometer arranged in the far infrared heater 14 is tuned as described above. It may be used in combination with the control of. Further, in order to arrange the net conveyors 1a and 1b located in the cleaning tank 3 linearly without slacking more than necessary, it is desirable to provide a torque limiter or the like in the rotation drive system of the net conveyors 1a and 1b.

In the cleaning apparatus of the present invention shown above,
The upper net conveyor 1 is placed on the lower net conveyor 1a.
The object 2 to be cleaned, which is pressed and fixed by its own weight of a, is conveyed, and previously cleaned, is carried into the tank from the inlet hole 6a of the cleaning tank 3, and the pair of ultrasonic transducers 4, 4 The action of ultrasonic waves when passing through the space, and further downward jet ports 8a, 8b
After being washed by the synergistic effect of stirring the heated washing liquid 5b from the above, and further carried out from the outlet hole 6b, a desired washing effect can be obtained through additional washing, rinsing and drying steps.

The continuous ultrasonic cleaning apparatus according to the present invention shown in FIG. 2 has basically the same configuration as that of the first embodiment, but the preliminary cleaning liquid shower 16 is arranged outside the storage tank 9 to store the same.
A lid is provided to open only the inlets and outlets of the net conveyors 1a and 1b, and an unillustrated N ₂ gas supply device is provided. From the inlets and outlets of the net conveyors 1a and 1b, an appropriate amount of N ₂ gas is ejected to prevent outside air from entering. To prevent this, the inside of the storage tank 9 is kept in an N ₂ gas atmosphere. The high-speed N ₂ gas of the blower device 19 circulates and uses the N ₂ gas in the storage tank 9, but at the time of circulatory use, it is equipped with a cooler for separating it from the cleaning liquid vapor and is configured to be used after being cleaned. is there. Also, cleaning liquid 5
Reference characters a and 5b are oxygen-free water, which are appropriately replenished from an oxygen-free water producing device (not shown). A heater 1 is provided on the outer periphery of the storage tank 9.
8 is installed, and if necessary, for example, cleaning liquid 5b
It can be kept heated at 0 ° C.

The item to be cleaned 2 is first of all the pre-cleaning liquid shower 1
2a is pre-cleaned or degreased with oxygen-free water or a solvent-based cleaning liquid used as required, and then the cleaning liquid is blown off by the high-speed blower device 17 before entering the storage tank 9 and in the cleaning tank 3 in oxygen-free water. Ultrasonically cleaned. When a solvent-based cleaning liquid is used in the preliminary cleaning liquid shower 16, oxygen-free water is used in another preliminary cleaning liquid shower 12a adjacent to the cleaning tank 3 in the storage tank 9 as needed, as in the first embodiment. It is good to wash. After ultrasonic cleaning in the cleaning tank 3, the step of rinsing in the cleaning shower 12b, drying with the blower device 16 with high-speed N ₂ gas, and further drying with the far-infrared heater 14 is performed with high-speed N ₂ gas. Other than that, the same operational effects as those of the first embodiment are obtained.

[0028]

In the continuous ultrasonic cleaning apparatus according to the present invention shown in FIG. 1, since the object to be cleaned is held by the upper and lower net conveyors, it is moved by the vibration of ultrasonic waves when it is carried into the cleaning tank. In addition, the cleaning liquid does not move even when the cleaning liquid is instantly scattered and dried by the high speed blow in the drying process of the subsequent process. Therefore, even if water or pure water is used as the cleaning liquid, the ultrasonic blower has a high ultrasonic cleaning effect, and by using an air blower that blows clean air at a high flow rate, the cleaning liquid is instantly scattered and stains and water marks are completely eliminated. It does not occur. Further, the cleaning liquid in the cleaning tank flows out from the inlet / outlet holes of the net conveyor, but since the cleaning liquid is circulated and replenished from the storage tank in accordance with the amount of this outflow cleaning liquid, it is possible to always maintain an appropriate amount. Become. Figure 2
In the continuous ultrasonic cleaning apparatus according to the present invention shown in FIG. ₂ , since oxygen-free water is used as the cleaning liquid and the atmosphere in the storage tank is N ₂ gas, the Fe-B-R magnets to be cleaned are very susceptible to rust. Even in the case of various metal processed products, it is possible to carry out extremely good cleaning without water marks by high-speed blowing of N ₂ gas without rusting them.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The cleaning apparatus of the present invention shown in FIG.
When used for cleaning the ferrite magnet after being subjected to the polishing process, the conventional cleaning device shown in FIG.
Although more than m is required, in the device of the present invention, in order to obtain the same cleaning effect as the conventional device, the length of the cleaning tank is 0.7 m and the length of the storage tank is 1.5 m. The length was 1/2 or less. Further, in the device of the present invention in which a preliminary cleaning device such as a shower is arranged in front of the cleaning tank, and a cleaning device such as a shower, an air blower device, and a drying device such as a heater are arranged after the cleaning tank, the above-mentioned auxiliary equipment is almost stored. It can be accommodated three-dimensionally within the tank length, and its total length can be significantly reduced to 1/4 or less compared to the conventional cleaning device. Water was used as a cleaning liquid in both the conventional apparatus and the apparatus of the present invention, the transport speed of the net conveyor was 2.0 m / min, and the dimensions of the ultrasonic transducer were W160 mm × L460 mm × H95 mm. In particular, the circulation pump used in the device of the present invention is 400 l /
It had a circulating supply capacity of min.

Using the cleaning apparatus of the present invention shown in FIG. 1,
Using electronic parts as the objects to be cleaned and water at 50 ° C as the cleaning liquid,
After cleaning, after drying with an air blower device with an air flow rate of 200 m / sec, the objects to be cleaned sandwiched and fixed on the upper and lower net conveyors moved at all in the same arrangement as before cleaning, that is, in the cleaning and drying processes. Without, and compared to conventional cleaning and drying using Freon as a cleaning liquid,
A good product with no spots or watermarks was obtained compared to the conventional device. Further, conventionally, a tubular member whose one end is blocked, which is difficult to clean the inside, can be well cleaned.

[0031]

The continuous ultrasonic cleaning apparatus according to the present invention is
As is clear from the examples, since the cleaning liquid circulation means is provided, the relative amount of makeup water is increased, and since the heating liquid has an agitating effect, the cleaning efficiency is high and the cleaning time can be shortened. Compared to the conventional cleaning tank, its total length can be reduced to 1/2 or less, and with the achievement of remarkable downsizing, the net conveyor that conveys the object to be cleaned can be arranged linearly, and damage due to rolling of the object to be cleaned can be prevented. It does not occur, is small in size, easy to install, has high versatility, and has industrially excellent effects.

Further, the continuous ultrasonic cleaning device of the present invention is
By holding and transporting the object to be cleaned by the upper and lower net conveyors, the object to be cleaned does not move or scatter even in the cleaning and drying steps, and does not move or scatter even if it is dried by a blower. The high-speed blower can eliminate the generation of spots and watermarks regardless of the cleaning liquid type.

Furthermore, by placing the entire apparatus in a state of flowing an inert gas, using oxygen-free water as a cleaning solution for cleaning, and blower drying with an inert gas, it becomes possible to clean a product that is extremely rusty. Therefore, all industrial products can be washed with water as a washing liquid at a level equal to or higher than the washing with CFCs.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a configuration of an embodiment of a cleaning apparatus of the present invention.

FIG. 2 is a schematic explanatory view showing a configuration of a conventional cleaning device.

[Explanation of symbols]

 1a Upper net conveyor 1b Upper net conveyor 1c, 1d Net conveyor 2 Cleaning object 3 Cleaning tank 4 Ultrasonic transducer 5, 5a, 5b Cleaning liquid 5c Outflow cleaning liquid 6a Inlet hole 6b Outlet hole 7 Replenishment gutter 8a, 8b Jet outlet 9 Receiving Storage tank 10 Circulation pump 11 Flap 12a, 16 Pre-cleaning shower 12b Cleaning shower 13 Air blower 14 Far infrared heater 15 Drying room 17 High-speed blower device 18 Heater 19 Blower device

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 25, 1993

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a configuration of an embodiment of a cleaning apparatus of the present invention.

FIG. 2 is a schematic explanatory view showing a configuration of a conventional cleaning device.

FIG. 3 is a schematic view showing a configuration of an embodiment of a conventional cleaning device.
It is a clear view.

[Explanation of Codes] 1a Upper Net Conveyor 1b Upper Net Conveyor 1c, 1d Net Conveyor 2 Object to be Washed 3 Cleaning Tank 4 Ultrasonic Transducer 5, 5a, 5b Cleaning Liquid 5c Outflow Cleaning Liquid 6a Inlet Hole 6b Outlet Hole 7 Supply Gutter 8a, 8b Jet port 9 Storage tank 10 Circulation pump 11 Flap 12a, 16 Pre-cleaning shower 12b Cleaning shower 13 Air blower 14 Far infrared heater 15 Drying room 17 High-speed blower device 18 Heater 19 Blower device

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshihiro Hirakawa 1054 Chubu, Arita-cho, Nishimatsuura-gun, Saga Imaizumi Tate Works (72) Inventor Soichi Masakatsu 282 Fukumo, Omachi-machi, Kijima-gun, Saga Prefecture (72) Inventor Fumiyasu Kitano 1062 Oyabu, Yabu-cho, Yabu-gun, Hyogo Prefecture

Claims (7)

[Claims] 1. An ultrasonic wave wherein an inlet / outlet hole is provided in the tank abdomen and a net conveyor for transporting an object to be cleaned together with a holding net for fixing is made movable through the tank abdomen and is opposed to the net conveyor in the tank. A cleaning tank for arranging the vibrator, a cleaning liquid storage tank located below the cleaning tank for storing the cleaning liquid flowing out from the net conveyor inlet / outlet holes of the cleaning tank, and a cleaning liquid for cleaning liquid in the cleaning liquid storage tank. A continuous ultrasonic cleaning device comprising a cleaning liquid circulating means for replenishing the cleaning liquid and a heating device for the cleaning liquid. 2. An ultrasonic wave in which a net conveyor that has an inlet / outlet hole in the tank abdomen and conveys an object to be cleaned together with a holding net for fixing is movable through the tank abdomen and is opposed to the net conveyor in the tank. A cleaning tank for arranging the vibrator, a cleaning liquid storage tank located below the cleaning tank for storing the cleaning liquid flowing out from the net conveyor inlet / outlet holes of the cleaning tank, and a cleaning liquid for cleaning liquid in the cleaning liquid storage tank. And a cleaning liquid circulating means for replenishing the cleaning liquid, and the cleaning liquid storage tank has a substantially closed structure, and the inside of the cleaning liquid storage tank can be purged with an inert gas. 3. The continuous ultrasonic cleaning device according to claim 2, further comprising a heating device for the cleaning liquid. 4. A lower net conveyor for carrying an object to be cleaned by providing an inlet / outlet hole in the tank abdominal part in place of the net conveyor for carrying together with the holding net for fixation, and for driving in synchronization with the lower net conveyor. The continuous ultrasonic cleaning device according to claim 1, 2 or 3, wherein the net conveyor is movable through the abdomen of the tank. 5. The continuous super according to claim 1, wherein the ultrasonic cleaning oscillator and / or the blower nozzle is provided with a distance adjusting mechanism with respect to the object to be cleaned. Sonic cleaning device. 6. A device for injecting an inert gas into the cleaning liquid in the cleaning liquid tank and / or the cleaning liquid receiving / accumulating tank is provided, claim 1, claim 2, claim 3, claim 4 or claim 6. Item 5. The continuous ultrasonic cleaning device according to item 5. 7. The continuous ultrasonic cleaning apparatus according to claim 1, 2, 3, 4, 5 or 6, wherein the cleaning liquid is oxygen-free water or pure water. ..