JP2822652B2 - Screen printing plate cleaning equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen printing plate cleaning apparatus, and more particularly, to a screen printing plate cleaning apparatus for cleaning only a mesh portion of a screen printing plate.

[Prior Art] Screen printing plates are used, for example, when forming a thick film hybrid circuit including elements such as a conductor pattern, a capacitor, and a resistor. Is formed by applying a photosensitive material to the substrate and baking the pattern.

The screen printing plate thus formed is printed by squeezing the paste to form a desired circuit.

After that, the used screen printing plate is cleaned by a cleaning device.Conventionally, as a screen printing plate cleaning device, the screen printing plate is immersed in a cleaning tank filled with a solvent and, if necessary, ultrasonically vibrated. The cleaning is carried out by removing the ink paste and the like adhering to the screen by adding them and performing a series of drying operations such as rinsing and drying.

[Problems to be Solved by the Invention] However, as described above, the apparatus for immersing the entire screen printing plate in the solvent of the cleaning apparatus has the following disadvantages.

1) A large amount of solvent is required.

2) The size of the cleaning device increases.

3) The adhesive fixing the screen mesh to the frame deteriorates.

4) Characters such as oil-based ink written on the periphery of the frame for screen identification disappear.

5) In order to prevent the above items 3) and 4), the type of solvent used is limited.

Therefore, the present inventors have conducted various studies in order to solve the above-mentioned drawbacks, and as a result, have found that the above-mentioned drawbacks can be improved by cleaning only the portion of the screen mesh to which the ink paste or the like has adhered. The present invention has been made based on the above.

Therefore, an object of the present invention is to provide an excellent screen printing plate cleaning apparatus that requires a small amount of solvent, reduces the size of the apparatus, does not cause the characters and the like around the screen frame to be lost by the solvent during cleaning, and does not limit the solvent used. To offer.

[Means for Solving the Problems] The object of the present invention is as follows: 1) Two housings each having an opening are arranged so as to face the openings, and a mesh of a screen printing plate is provided between the openings. A screen printing plate cleaning apparatus configured to sandwich a portion, wherein the two housings each have an exhaust pipe at an upper part, a solvent outlet and a discharge pipe at a lower part, and a part from an upper part to a lower part. A pipe is provided through the pipe, and the pipe has a liquid ejection port ejecting in the direction of the opening, and each side has an ultrasonic vibrator, and a pipe provided through the lower portion. The end of
An apparatus for cleaning a screen printing plate, which is connected to an air delivery pipe and a solvent flow pipe, and 2) a packing around the openings of the two housings according to item 1. Achieved by a screen printing plate cleaning device.

The screen mesh used in the present invention is preferably made of synthetic resin such as nylon or steel such as stainless steel.

As packing used for the opening of the housing, resin,
Rubber or the like is used.

The solvent used in the present invention is not particularly limited as long as it is a solvent generally used as a solvent for cleaning an ink paste.

As the ultrasonic transducer used in the present invention, a commonly used ultrasonic transducer is used.

The air introduction pipes 8 and 10 and the solvent flow pipes 9 and 11 used in the present invention are made of a stretchable material, for example, bellows pipes or the like.

EXAMPLES Next, the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

FIG. 1 is a perspective view showing a screen printing plate cleaning apparatus of the present invention.

FIG. 3 is a front view as viewed from the opening of the housing A.

The housing A is movably installed, and a packing 2a is provided at an opening of the housing A to prevent leakage of the solvent. The housing A has an exhaust pipe 3a and a pipe 4a penetrating from the upper part to the lower part. The pipe 4a is provided with a solvent outlet 5a.

The solvent is ejected from the solvent outlet 5a toward the screen mesh 6, and the screen mesh 6 is quickly washed.

The ultrasonic transducer 7a is located on the back of the housing A (see Fig. 3).
Is installed.

Further, a solvent discharge port 12a and a solvent discharge pipe Aa connected thereto are provided at the lower portion of the housing A, respectively.

Case B is the same as Case A, exhaust pipe 3b, pipe 3b, packing
2b, ultrasonic vibrator 7b and solvent discharge port 12b, solvent discharge pipe Bb
And these elements are arranged in a mirror image relationship, and the casing A and the casing B are arranged with openings facing each other. A screen printing plate is arranged to be able to be sandwiched between these openings.

FIG. 2 is a sectional view showing a screen printing plate cleaning apparatus of the present invention.

After the closed all the valves V ₁ ~V ₁₀ provided in the enclosure A and enclosure B, and sandwiching the mesh portion 6 of the screen printing plate between the opening of the enclosure A and enclosure B. That is, the screen mesh 6 is sandwiched by the resin packings 2a and 2b provided in the respective openings, and a sufficient pressure is applied from right and left to increase the degree of adhesion, so that the solvent does not leak from these portions. The pressure at this time was 20 kgf.

After sandwiching the mesh portion 6 of the screen printing plate between the openings of the housings A and B, the valves V ₁ and V ₄ provided on the exhaust pipes 3 a and 3 b are opened, and the pipes 4 a and 4 The valves V ₅ and V ₆ provided in 4b, the valves V ₂ and V ₃ provided in the solvent discharge pipes Aa and Bb, and the valves V ₈ and V ₁₀ provided in the solvent flow pipes 9 and 11 are combined. Open to introduce the cleaning solvent into the housings (A, B) and quickly drain the solvent after cleaning.

In this case, since the small holes are provided in the pipes 4a and 4b, the solvent is released in a shower shape toward the screen mesh surface to promote the cleaning effect.

After 1 minute of the shower, the solvent to be discharged is confirmed to be cleaned, closes the V _2, V _3, satisfies the solvent in the enclosure (A, B) by supplying the solvent subsequently .

When the housings (A, B) are filled with the solvent, all valves are closed and the ultrasonic vibrator is driven at 40 KHz, 1200 W for 20 minutes.

Then opening the valve _{V 1, V 4, V 2} , V 3, after discharging the solvent, V _5, V _6, open the V _8, V ₁₀ new clean solvent is ejected like a shower screen mesh surface Wash.

Next, after closing all the valves, the valves V ₁ , V ₄ ,
Valve provided in the V _5, V ₆ and the air inlet tube 8 and 10
Open V _7, V ₉ and introducing air, small holes 5a to the screen mesh surface, and dried by blowing air from 5b, to obtain a clean screen mesh surface.

It is preferable that all of the above-described relations such as opening and closing of the valves be automatically performed by microcomputer control.

[Effects of the Invention] In the present invention, two casings each having a relatively small volume, and only the portion of the screen mesh to be cleaned are sandwiched,
Furthermore, since the solvent is ejected toward the screen mesh, not only is the cleaning performed promptly, but also the device is reduced in size, the amount of the solvent is small, and the solvent is not restricted. Has excellent effects such as that the characters are not disappeared by the solvent.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a screen printing plate cleaning apparatus of the present invention. FIG. 2 is a sectional view showing a screen printing plate cleaning apparatus of the present invention. FIG. 3 is a front view as viewed from the opening of the housing A. DESCRIPTION OF SYMBOLS 1 ... Screen printing plate 2a, 2b ... Packing 3a, 3b ... Exhaust pipe 4a, 4b ... Piping 5a, 5b ... Solvent outlet 6 ... Screen mesh 7a, 7b ... Ultrasonic vibrator 8, 10 ... air introduction pipe 9, 11 ... solvent flow pipe A, B ... housing Aa, Bb ... solvent discharge pipe 12a, 12b ... solvent discharge port

Claims (2)

(57) [Claims] 1. A screen printing plate cleaning device comprising two housings each having an opening, the openings being opposed to each other, and a mesh portion of the screen printing plate being sandwiched between the openings. An apparatus, wherein the two housings each have an exhaust pipe at an upper part, a solvent outlet and a discharge pipe at a lower part, and a pipe extending from an upper part to a lower part of the housing. Has a liquid ejection port that ejects in the direction of the opening, has an ultrasonic vibrator on each side, and an end of a pipe penetrating the lower portion is provided with an air distribution pipe and a solvent flow path. An apparatus for cleaning a screen printing plate, which is connected to a pipe. 2. An apparatus for cleaning a screen printing plate, characterized in that packing is provided around openings of the two casings according to claim 1.