JPS62792Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an ultrasonic cleaning device, and more particularly to an ultrasonic cleaning device that can ultrasonically clean magnetic heads, fired members, magnetic members, and various other electronic components without causing chipping. .

Since dirt such as oil and powder adheres to the magnetic head during the manufacturing process, it is necessary to remove this dirt by ultrasonic cleaning. The principle of cleaning using ultrasonic waves is thought to be that the repeated generation and destruction of air bubbles in the liquid due to cavity phenomenon (cavitation) impacts and removes dirt adhering to the member to be cleaned. When cleaning the magnetic head, the ferrite core on the front surface of the magnetic head is exposed from the case and this surface is polished, so if ultrasonic cleaning is performed without limit, it will impede the surface roughness accuracy of the front surface of the head and cause problems. Depending on the situation, you may end up losing money. In particular, if ultrasonic cleaning is performed with the front surface of the magnetic head facing downward, the ferrite crystal grains in the core will peel off and fall off from the surface, causing so-called chipping, where the surface is chipped when viewed microscopically, resulting in a defective product. Put it away. This chipping phenomenon is thought to be due to the core crystal grains peeling off and falling off under their own weight due to the surface erosion caused by the cavitation mentioned above.If ultrasonic cleaning is performed with this side facing upward, the surface roughness will not be affected. No chipping phenomenon occurs.

The present invention has been made in view of this fact, and provides an ultrasonic cleaning device that can clean various materials or parts with polished surfaces without deterioration or loss of performance. The purpose is to

For this purpose, the present invention provides a cleaning tank with
A lower ultrasonic oscillation section and an upper ultrasonic oscillation section each having adjustable output are provided, and the member to be cleaned is placed between the lower and upper ultrasonic oscillation sections with the polished surface of the member facing upward. The upper ultrasonic oscillation part is held in a height-adjustable manner relative to the lower ultrasonic oscillation part, and the mounting part is further provided with an opening that penetrates vertically, The inner peripheral edge or the inner edge of the opening is configured to hold the side portion of the member to be cleaned, whereby at least the upper polished surface and the lower surface of the member to be cleaned are subjected to the upper and lower ultrasonic oscillations, respectively. It is characterized by being exposed towards the front.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing an ultrasonic cleaning device according to an embodiment of the present invention in a state in which it is in operation.
For example, an annular spacer 2 is installed at the bottom of the cleaning tank 1, and a lower ultrasonic oscillator 3 is placed within this spacer. A jig 5 is attached to the upper surface of the spacer 2 for fixing a magnetic head 4, which is a member to be cleaned. In this embodiment, the spacer 2 and the jig 5 constitute the mounting portion of the present invention. The jig 5 has large openings at its upper and lower surfaces and is configured to support the vicinity of the sides of the magnetic head 4. The magnetic head 4 is mounted on this jig so that its magnetic gap surface, that is, the front surface (polishing surface) 4a of the head is exposed upward. An upper ultrasonic oscillator 6 is held by a suitable support frame 7 above the magnetic head 4 attached to the jig 5 and within the cleaning tank. This support frame 7 engages with a feed screw 8 attached to the cleaning tank 1, and moves vertically along a guide rod 9 provided in the cleaning tank 1 by rotating the feed screw 8 with the handle 13. This allows the height of the upper ultrasonic oscillator 6 to be adjusted. In order to determine the amount of movement of the upper ultrasonic oscillator 6, a suitable scale is provided at a suitable part, for example, on the inner wall of the tank or near the handle.

The upper and lower ultrasonic oscillators 6, 3 are connected to an ultrasonic oscillator 12 via output adjustment devices 10, 11, respectively, so that the upper and lower ultrasonic oscillators 6, 3 output can be varied. The inside of the cleaning tank 1 is filled with a cleaning liquid 14 such as alcohol, acetone, or trichlorethylene, and the above-mentioned upper and lower ultrasonic oscillators 6, 3, magnetic head 4, jig 5, etc. are immersed in this cleaning liquid. be done. In this state, the upper and lower ultrasonic oscillators 6 and 3 are oscillated to generate ultrasonic waves in the liquid. Since the polished surface 4a of the magnetic head 4 faces upward, the ferrite crystal grains on the surface will not peel off under their own weight even when subjected to ultrasonic cleaning, and the magnetic head can be polished without chipping. Removes dirt such as oil and dust that has adhered to the surface. The output of the ultrasonic oscillator 12 or the height of the upper ultrasonic oscillator 6 is adjusted depending on the degree of dirt or the shape and type of the member to be cleaned.

The above-mentioned example is one embodiment, and a plurality of magnetic heads 4 may be arranged side by side on a jig 5 and a plurality of magnetic heads 4 may be ultrasonically cleaned at the same time, as in the embodiment shown in FIG. can. In this case as well, the oscillator output or the height of the upper ultrasonic oscillating section 6 is adjusted in advance depending on the number of magnetic heads arranged. Furthermore, the distance between the magnetic head 4 and the lower ultrasonic oscillator 3 can be changed by replacing the spacer 2 or the like.

Note that the mounting part of the member to be cleaned, the support mechanism for the upper ultrasonic oscillating part, the vertical movement mechanism, etc. are not limited to the illustrated embodiment; for example, the upper oscillating part can be suspended from outside the tank and its height can be adjusted. It can be done.

According to the present invention, by installing the member to be cleaned between the upper and lower ultrasonic oscillating units with the surface that requires surface roughness accuracy facing upward, cleaning can be performed while maintaining this surface roughness accuracy. Further, since the output of the oscillating section and its height position can be adjusted, it is possible to perform ultrasonic cleaning on various members to be cleaned under appropriate conditions at all times.

[Brief explanation of the drawing]

Fig. 1 is a schematic longitudinal sectional view of an ultrasonic cleaning device according to an embodiment of the present invention, and Fig. 2 shows an embodiment in which a plurality of members to be cleaned are installed in a cleaning tank and cleaned at the same time. FIG. 1...Cleaning tank, 3...Lower ultrasonic oscillator, 4...
...Magnetic head (member to be cleaned), 4a... Polished surface (head front), 5... Jig, 6... Upper ultrasonic oscillator, 7... Support frame, 8... Feed screw, 1
0, 11... Output adjustment device, 12... Ultrasonic oscillator, 14... Cleaning liquid.

Claims (1)

[Scope of utility model registration request] A lower ultrasonic oscillator and an upper ultrasonic oscillator, each having an adjustable output, are provided in the cleaning tank, and the object to be cleaned is placed between the lower and upper ultrasonic oscillators with the polished surface of the member facing upward. A mounting part for arranging the cleaning member is installed, the upper ultrasonic oscillation part is held in a height-adjustable manner relative to the lower ultrasonic oscillation part, and the mounting part further includes an opening penetrating vertically. and is configured to hold the side portion of the member to be cleaned by the inner peripheral edge or the inner edge of the opening, whereby at least the upper polished surface and the lower surface of the member to be cleaned are held against the upper and lower polished surfaces, respectively. An ultrasonic cleaning device characterized by being exposed toward a lower ultrasonic oscillation section.