JPH10217433A - Cleaning device of screen mask for screen printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To completely drop printing agent retained and adhered at a rear side and screen holes of a screen mask and to automatically efficiently execute it by a machine. SOLUTION: This device reciprocates a solvent coating unit 2, a press contact base 17 of wiping-off cloth 13 wrapped on a midway of the cloth 13, supply roll 12 of the cloth 13, a winding roll 14 of the cloth 13 and an air ejector 20 together along a rear surface of a screen mask 23. The mask 23 is coated with solvent by the unit 2, and the solvent containing dirt is wiped off by the cloth 13 wrapped on the base 17. Eventually, it is sucked from a suction port 18 of the base 17, and the air is sprayed from the ejector 20 to fasten to dry it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen mask cleaning device for a screen printing machine.

[0002]

2. Description of the Related Art When printing with a screen printing machine, a screen mask is placed on a plate to be printed such as a printed circuit board, and a printing agent such as cream solder placed on the screen mask is spread with a squeegee and the screen mask is applied. The printing is performed at a predetermined position on the printing plate via the provided screen holes.

When printing is repeated many times, a printing agent such as cream solder adheres to and adheres to the screen holes of the screen mask, or spreads around the screen holes on the back side.

For this reason, the screen mask must be cleaned from time to time. Conventionally, this cleaning has been performed by scraping with a scraper or the like or wiping with a sponge or the like after printing is repeated to some extent.

[0005]

However, in the case of the above-described conventional work, it is difficult to cleanly remove even the printing agent stuck in the screen hole. It was bad.

The present invention has been made in view of the above points, and it is possible to completely remove not only the printing agent spread around the screen hole on the back side of the mask but also the printing agent stuck in the screen hole. Another object of the present invention is to provide a screen mask cleaning device for a screen printing machine, which can be efficiently performed by automation.

[0007]

SUMMARY OF THE INVENTION Accordingly, the gist of the present invention is to provide an elongate solvent coating device having a solvent coating material provided on an upper surface thereof and rotating at a predetermined timing for a predetermined time.
A supply roll of the wipe cloth around which an unused wipe cloth is wound and a take-up roll of the wipe cloth which winds up a used portion of the wipe cloth; and a supply roll and a wipe cloth of the wipe cloth in parallel with the solvent coating apparatus. A tubular wiper pressing base, which is disposed above the take-up roll, wraps around the middle of the wipe, and performs suction at a predetermined timing from a suction port provided on the upper surface; and the wiper. The air ejection device, which is arranged in parallel with the pressing table and ejects air at a predetermined timing from an air ejection port provided on the upper surface, is reciprocated integrally along the back surface of the screen mask. In addition, the solvent application device is moved up and down at a predetermined timing, and the supply roll of the wiping cloth and the take-up roll of the wiping cloth are wiped. Ri there is a pressing roll of cloth in the cleaning device of the screen mask of a screen printing machine without so allowed to lift at a predetermined timing.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic explanatory view of the present invention, FIG. 2 is a front view, FIG. 3 is a rear view, FIG. 4 is a left side view, FIG. 5 is a right side view, FIG. 6 is a plan view, and FIG. FIG. 8 is a longitudinal sectional view of the solvent coating apparatus, and FIG. 8 is a view for explaining the operation of the present invention.

In FIG. 1, reference numeral 1 denotes a support substrate which is horizontally reciprocated by a required driving mechanism (not shown). Reference numeral 2 denotes a solvent coating device, which is mounted on one surface of the support substrate 1 with a cylinder to be described later so as to move up and down at a predetermined timing. The solvent coating device 2 includes an elongated box-shaped container 3, a flexible and easily water-containing coating material such as deerskin exposed from the upper surface of the container 3, and a solvent (not shown). ) Is blown from the pipe 5.

Numerals 6 and 6 denote cylinders for raising and lowering the solvent coating device 2, and their piston rods 6a, 6a
The solvent coating device 2 is attached to the tip of the device via support rods 7,7. The cylinders 6, 6 are vertically fixed to the support substrate 1.

Reference numerals 8 and 8 denote a pair of support plates, which are provided so as to protrude in parallel in the vicinity of both ends of the other surface of the support substrate 1 and are moved up and down at a predetermined timing by a cylinder described later. . Reference numerals 9 and 9 denote cylinders for raising and lowering the support plates 8 and 8, respectively. Support rods 10 and 10 and connecting rods 11 are provided at the ends of piston rods 9a and 9a.
The support plates 8 and 8 are attached via 11. The cylinders 9 are vertically fixed to the support substrate 1.

Reference numeral 12 denotes a supply roll for wiping cloth, around which an unused cotton wiping cloth 13 is wound. A supply roll 12 for the wiping cloth is rotatably supported between the support plates 8,8.

Reference numeral 14 denotes a take-up roll for wiping cloth, which is used to intermittently take up the used portion of the wiping cloth 13 intermittently. The take-up cloth take-up roll 14 is mounted between the support plates 8, 8 in parallel with the take-up cloth take-up roll 14, and is rotatably supported.

Then, a take-up roll 1 for the wiping cloth
4 and the supply roll 12 of the wiping cloth
The wiping cloth 13 is driven by a drive motor 15 and a power transmission mechanism 16 composed of a pulley, a belt, and the like, which are fixed to the wiping cloth, at an appropriate timing so as to wind up the wiping cloth 13 by a predetermined length.

Reference numeral 17 denotes a cylindrical pressing base for the wiping cloth, which is provided with a suction port 18 along the length direction on the upper surface. The upper surface is flat. Further, a pressing table 17 for the wiping cloth is fixed across the supporting plates 8, 8, and one end side thereof is connected to a vacuum device 19. The vacuum device 19 performs suction from the suction port 18 at a predetermined timing. Further, the wiping cloth pressing table 17 is disposed above the wiping cloth supply roll 12 and the wiping cloth winding roll 14, and loops around the middle of the wiping cloth 13.

Reference numeral 20 denotes an air ejection device, which is a cylindrical main body 21.
Air is blown out at a predetermined timing from an air blowout port 22 provided on the upper surface of the device to speed up drying. The air ejection device 20 is connected to an appropriate air supply device (not shown). The air may be hot air. Further, the air ejection device 20 is fixed between the support plates 8 in such a manner as to be parallel to the pressing table 17 for the wiping cloth. In addition, reference numeral 23 in the figure denotes a screen mask.

Next, the operation of this embodiment will be described with reference to FIG. First, the support substrate 1 moves rightward in the figure. The screen mask 23 is fixed. At this time, the solvent application device 2 is raised by the cylinder 6, while the supply roll 1 of the wiping cloth attached between the support plates 8, 8 which is raised by the cylinders 9, 9.
2. The take-up roll 14 and the wiping cloth pressing table 17 are also raised at the same time.

As a result, the back surface of the screen mask 23 is first sufficiently coated with the solvent through the contact of the coating material 4 of the solvent coating device 2 and subsequently by the wiping cloth 13 wrapped around the pressing base 17 of the wiping cloth. Wipe while rubbing.

When the wiping cloth pressing table 17 reaches the end of the back surface of the screen mask 23, the movement of the support substrate 1 is stopped, the support plates 8, 8 are lowered, and the wiping cloth is moved by the drive motor 15. Is driven. Then, the dirty portion of the wiping cloth 13 is wound up by a required length. At this time, the solvent coating device 2 is also lowered by the cylinder 6.

Next, the support plates 8 rise again, and the support substrate 1 starts moving in the original direction. At this time, the wiping cloth pressing table 17 suctions through the suction port 18, and the air jetting device 20 jets air from the air jetting port 22 to blow it to the screen mask 23.

As a result, not only the printing agent spread around the screen hole on the back side of the screen mask 23 but also the printing agent stuck in the screen hole is completely dropped. And after wiping, air is blown,
The drying time is also greatly reduced. Again, these are done automatically by the machine, so they are much more efficient than manual work.

[0022]

Since the present invention has the above-described structure and operation, it is possible to completely remove not only the printing agent spread around the screen hole on the back side of the screen mask but also the printing agent stuck in the screen hole. . In addition, the drying time after cleaning can be significantly reduced. Since the work is automatically performed by the machine, the efficiency is much improved as compared with the case of the conventional manual work.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of the present invention.

FIG. 2 is a front view of the present invention.

FIG. 3 is a rear view of the present invention.

FIG. 4 is a left side view of the present invention.

FIG. 5 is a right side view of the present invention.

FIG. 6 is a plan view of the present invention.

FIG. 7 is a longitudinal sectional view of a solvent coating device according to the present invention.

FIG. 8 is an operation explanatory view of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 support substrate 2 solvent coating device 6, 6 cylinder 8, 8 support plate 9, 9 cylinder 12 supply roll of wiping cloth 13 wiping cloth 14 take-up roll of wiping cloth 15 drive motor 17 wiping cloth pressing table 18 suction port 20 Air ejection device

Claims (2)

[Claims] An elongate solvent coating device having a solvent coating material provided on an upper surface thereof, rotating at a predetermined timing for a predetermined time,
A supply roll of the wipe cloth wound around an unused wipe cloth and a take-up roll of the wipe cloth for winding up a used portion of the wipe cloth; A tubular wiper pressing base, which is disposed above the take-up roll, wraps around the middle of the wipe, and performs suction at a predetermined timing from a suction port provided on the upper surface; and the wiper. The air ejection device, which is arranged in parallel with the pressing table and ejects air at a predetermined timing from an air ejection port provided on the upper surface, is reciprocated integrally along the back surface of the screen mask. In addition, while raising and lowering the solvent application device at a predetermined timing, the supply roll of the wiping cloth and the take-up roll of the wiping cloth, Ri screen printing machine of the screen mask of the cleaning device and the pressing roll was no such allowed to lift at a predetermined timing of the cloth. 2. An elongated solvent having a support substrate reciprocating horizontally with a required drive mechanism, and a cylinder mounted on one surface of the support substrate so as to be lifted and lowered at a predetermined timing, and a solvent coating material provided on the upper surface. A coating device, a pair of support plates provided so as to extend in parallel near both ends of the other surface of the support substrate, and ascending and descending at a predetermined timing with a cylinder, between the pair of support plates A supply roll for a wipe cloth wound around an unused wipe cloth, which is rotatably supported and rotated at a predetermined timing by a drive motor for a predetermined time, and a wipe cloth for winding a used portion of the wipe cloth. A take-up roll, and a wiper cloth disposed in parallel with the solvent application device and disposed above the wiper supply roll and the wiper take-up roll. A tubular wiper pressing base configured to hang the cloth in the middle and to perform suction at a predetermined timing from a suction port provided on the upper surface, and press the wiper between the pair of support plates. A screen mask cleaning device for a screen printing machine, comprising: an air ejection device mounted in parallel with a table and ejecting air at a predetermined timing from an air ejection port provided on an upper surface.