JPH06126249A - Ultrasonic cleaning output adjustment method - Google Patents

Abstract

(57) [Summary] [Purpose] When performing ultrasonic cleaning in multiple stages of cleaning tanks, the output of the ultrasonic oscillator of each ultrasonic cleaning tank is automatically matched to the set output for optimum output. Make appropriate adjustments. [Structure] The detected power 11 from the ultrasonic cleaning tank 1, the ultrasonic oscillator 2 and the like in actual operation is compared with the set power 11 'by a control device 15 such as a personal computer or a sequencer, and the detection error is a DC voltage control type. The AC / DC converter 13 causes the output transformer 3 to output electric power that matches the set output through the power amplifier 14, so that the ultrasonic oscillator 2 is operated in an optimum oscillation state. [Effect] The wiring between the control panel of the power device and the ultrasonic oscillator is reduced, the structure of the entire device is simplified, and initial assembly, operation management, maintenance inspection, maintenance, etc. are facilitated.
Make it possible to reduce costs. Also, without requiring skill,
Universal usability is revealed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The disclosed technique is to detect the output of an ultrasonic oscillator provided in an ultrasonic cleaning tank when ultrasonically cleaning precision parts such as electronic parts in a predetermined ultrasonic cleaning tank. It belongs to the technical field of adjusting to an optimum output as desired.

[0002]

As is well known, the prosperity of civil society and industrial society depends largely on the development of excellent science and technology, but especially on the development of various machinery, equipment, parts, etc. However, these mechanical devices, instruments, parts, etc. are rarely equipped with only a single part, and are often composed of a plurality of parts that are complicatedly combined. Especially, the parts of recent electronic devices and optical devices are sophisticated. In many cases, it is composed of a combination of various fine parts, and therefore mixing and adhesion of dust and the like in the process from the device to the assembly of these fine parts must be absolutely avoided. In view of this, cleaning techniques using various cleaning liquids and pure water have been developed and put into practical use, but ultrasonic cleaning has been widely adopted because of its good cleaning effect.

Thus, in such ultrasonic cleaning, the output of the ultrasonic oscillator provided in the cleaning tank in a dipped state determines the material, shape, and size of the work to be cleaned in the cleaning tank. Optimum output is desired depending on the liquid to be cleaned, etc. Especially, when cleaning workpieces with complex shapes, the ultrasonic oscillator output of each cleaning tank is optimized for multiple cleaning tanks arranged in series. It has been found that adjustment in advance is extremely important in principle in order to improve cleaning efficiency.

In order to adjust the oscillation power of the ultrasonic oscillator, basically, as shown in FIG. 9, the ultrasonic cleaning tank 1 is used.
The electric power for oscillating the ultrasonic oscillator 2 (the position and orientation of the ultrasonic oscillator 2 in the ultrasonic cleaning tank 1 is schematically shown for convenience of illustration) installed inside is fixed. The tap 5 provided between the output transformer 3 and the correction choke transformer 4 is selectively connected by a changeover switch.

Further, as shown in FIG. 10, the oscillator 6 is provided with a semi-fixed type resistor 6'for selective connection.

However, the oscillation control methods shown in FIGS. 9 and 10 have a complicated structure in terms of design, and since the operation is performed with the intuition of an operator, there is a drawback that the accuracy is deteriorated. However, there was a problem that caused trouble.

To cope with this, a method of detecting the output from the ultrasonic oscillator 2 and comparing and controlling it with a desired predetermined output can be considered, but as shown in FIG. 8, the output transformer 3 and the ultrasonic oscillator 2 are connected to each other. In the mode in which the current detector 8 is provided between the two to detect the output, the impedance R of the ultrasonic oscillator 2 is
_{Since L} changes, the output also changes. Therefore, even if the detection current is controlled to be constant, the detection output is not constant.

Therefore, a simple method is conceivable in which the output power can be obtained by detecting the voltage and current of the ultrasonic oscillator 2 and calculating the synergistic product thereof, as shown in FIG.
A voltage detector 9 is connected to a line that is input from the output transformer 3 to the ultrasonic oscillator 2 via the correction choke transformer 4,
Further, a current detector 8 is provided on the output line from the ultrasonic oscillator 2 and both are connected to the power converter 10 to obtain a detection output 11.

By doing so, the detection output 11 can be accurately obtained even if the impedance R _L 7 of the cleaning tank 1 changes.

However, the cleaning tank 1 has actually been used so far.
Even if the detection output 11 is obtained in a mode in which a plurality of stages are provided side by side, the set power of each cleaning tank 1 is different. There was a drawback that the output power could not be matched to the power.

[0011]

It is an object of the invention of the present application to provide a cleaning apparatus provided with a multi-stage ultrasonic cleaning tank based on the above-mentioned prior art, in which the size, type, cleaning liquid to be used of each ultrasonic cleaning tank,
The ultrasonic oscillating power of the cleaning tank differs depending on the type of work to be stored, etc. Input and set in advance, at the time of cleaning, the output power of the cleaning tank is detected, the detected output and the set output are compared by a computer, and the detection operation is performed via a DC voltage control converter or the like via a power amplifier. This is because technical measures have been taken so that optimal ultrasonic cleaning can be performed accurately in each cleaning tank by accurately outputting the set power.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe one embodiment of the invention of this application with reference to FIGS. 1 to 7.

It is to be noted that the same mode parts as those in FIG. 8 and subsequent figures will be explained using the same reference numerals.

As shown in FIG. 7, the basic mode of the power control system for the ultrasonic oscillator according to the invention of the present application is that the error detector 12 receives a predetermined power 11 and a preset output 11 '. The input error is input to the power amplifier 14 via the DC power control type AC / DC converter 13, and is output to the ultrasonic oscillator 2 of the cleaning tank 1 via the output transformer 3 and the correction choke transformer 4 in a predetermined manner. The ultrasonic wave of is oscillated.

The detected power 11 is, as shown in FIG.
Since the signal is a signal converted by the power converter 10 and the set power is a signal that supplies the target power in direct current, the AC / DC converter 13 uses the difference between both signals as an error signal.
And the DC voltage is controlled by the error detection signal.

As described above, since the controlled DC voltage is supplied to the power amplifier 14, the output power becomes large when the supply voltage is high, and the output power becomes small when the supply voltage is low. It is supposed to be.

That is, when the detected output is larger than the set power, the output of the power amplifier 14 to the output transformer 3 becomes small, and conversely, when the detected output is smaller than the set power, the power amplifier 14 outputs. The output from the setting transformer 3 is set to be high, and when the detected output is equal to the set power, the output from the power amplification unit 14 to the setting detection 3 is not changed.

As for the generation of the set power, as shown in FIG. 4, a method of manually setting a DC voltage and inputting it to the error detector 12 is also possible, but the invention of this application is also possible. 5, as shown in FIG. 5, the program is preliminarily entered into the control device 15 such as a computer such as a personal computer or a sequencer according to the cleaning conditions (conditions such as the size and capacity of the cleaning tank, the type of cleaning liquid, the type of work). Aside
Input to the analog / digital converter 16 to convert the digital signal into an analog signal and set the set power to 1
1'is input to the error detector 12.

When controlling the cleaning tanks 1, 1 '... Of a plurality of units, a control device 15 such as a personal computer or a sequencer 15 is used.
Are insulated from each other so that they do not malfunction, and malfunctions due to unnecessary signals from the ultrasonic cleaning tanks 1, 1 '... Are prevented, and as shown in FIG. To all washing tanks, 1,1 '...
The isolation amplifiers 17, 17 '... Are interposed for the set power 11'.

In order to perform more accurate power control, the detected power is read into the analog-digital converter 16,
When the set power is different from the target set power, the detection error may be calculated and changed so as to match the set power, and as a mode corresponding to this, as shown in FIG. 3, analog-digital converters 16, 16 ′ ... Insulation amplifiers 18 and 18 ′ may be provided between the cleaning tank 1 and the cleaning tank 1.

In this way, in the cleaning apparatus having the cleaning tanks arranged in multiple stages, the ultrasonic cleaning is carried out according to the type, size, capacity, type of work, etc. of each ultrasonic cleaning tank 1. When the output power of the ultrasonic oscillator 2 of the tank 1 is different from each other, the power is set in advance in advance and input to a control device such as a personal computer or a sequencer, and the output power in an actually operating state is detected, The detected power and the set power are compared, and the detection error is increased or decreased through the DC voltage control type converter, etc., and the output is matched with the set power, so that the ultrasonic oscillation of the optimum output can be performed. To

[0022]

As described above, according to the invention of this application, a cleaning tank is basically provided in multiple stages for ultrasonic cleaning of electronic equipment parts, and a cleaning liquid or pure water is supplied in the cleaning tank. In the case of performing ultrasonic cleaning through the equipment, the optimum output power is supplied to the equipped ultrasonic oscillator to perform the most preferable ultrasonic oscillation. It is input to a control device such as a sequencer, and in actual operation, the power of the set output is supplied to the ultrasonic oscillator to oscillate, the detected output power is compared with the set power, and the detection is performed. Since the error can be input to the amplifier via a DC voltage control converter etc. and input to the output transformer so that the output power matches the set power, the worker can operate the buttons of the control device during actual operation. Just do Excellent effect of enabling the optimal ultrasonic cleaning without relying on intuition and the like are obtained.

Therefore, the wiring between the operation panel of the apparatus and the ultrasonic oscillator is reduced, and the apparatus is simpler and easier to assemble, maintenance and maintenance are not troublesome, and it is most suitable for the workpiece to be cleaned. It is possible to output electric power for ultrasonic cleaning, which can be steplessly changed depending on the design, and an excellent effect that fine cleaning can be performed finely according to cleaning conditions is achieved.

Moreover, there is also an advantage that the general versatility that any person can perform the cleaning according to the program without depending on the intuition of the worker.

[Brief description of drawings]

FIG. 1 is a block diagram of an oscillating operation of ultrasonic cleaning according to an embodiment of the present invention.

FIG. 2 is a flow chart for preventing malfunction of the cleaning tank.

FIG. 3 is a flowchart of setting power input based on a detection error.

FIG. 4 is a flowchart of a manual operation for setting power output.

FIG. 5 is a flowchart of output of set power via the control device.

FIG. 6 is a schematic circuit diagram of power detection that is not affected by the impedance of the cleaning tank.

FIG. 7 is a flow chart of output through error detection between set power and detected power.

FIG. 8 is a schematic circuit diagram of current detection from an ultrasonic oscillator output circuit based on a conventional technique.

FIG. 9 is a schematic diagram of a power control circuit of an ultrasonic oscillator of a cleaning tank based on a conventional technique.

FIG. 10 is a schematic diagram of power control of an ultrasonic oscillator based on another conventional technique.

[Explanation of symbols]

 1 Ultrasonic Cleaning Tank 2 Oscillator 11 Detected Power 11 'Set Power 15 Controller

Claims (4)

[Claims] 1. A method for adjusting an output of an ultrasonic oscillator of an ultrasonic cleaning tank to an optimum output by comparing a set output and a detected output, wherein the set output is set to a desired output by a control device and set as the detected output. An output adjusting method for ultrasonic cleaning, comprising: comparing an output with a detection error so as to increase or decrease a detection error so as to be output in accordance with the set output. 2. The ultrasonic cleaning output adjusting method according to claim 1, wherein the control device is a computer. 3. The ultrasonic cleaning output adjusting method according to claim 1, wherein the control device is a sequencer. 4. The ultrasonic cleaning output adjusting method according to claim 1, wherein the detection error signal is increased / decreased in electric power through a DC voltage control type converter.