JPH01118439A - Printer squeegee holder fitting device - Google Patents

Abstract

PURPOSE:To enable a squeegee holder to be certainly precisely simply fixed by positioning, by a method wherein a drop preventive pin is engaged with one tapered hole provided to a squeegee holder to be fixed and then, a conical top of a clamp bolt is tightened to another tapered hole provided to the squeegee holder. CONSTITUTION:By inserting a squeegee holder 19 into a depressed chamfer of a main holder 17, a ball 24 at the top of a drop preventive pin 20 provided to the main holder 17 is compressed with a compression spring 2 and is temprorarily once fixed to one tapered hole 22 of the squeegee holder 19. Then, by fastening a clamp bolt 21, its conical top comes in contact with the tapered hole 22 of the squeegee holder 19. However, since centers of the clamp bolt 21 and the tapered hole 22 are shifted, the squeegee holder 19 is pressed upward (Y direction) and left (X direction), and is certainly sticked closely to the main holder 17 to be fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a squeegee holder mounting device for a screen printing machine.

BACKGROUND ART 2 F. In recent years, screen printing has required high-precision printing, such as conductor printing for electronic circuit formation and cream solder printing, and various squeegee holder mounting devices for printing presses have been studied.

For example, in the device described in Utility Model Publication No. 61-12109,
As shown in FIG. 7, either the upper surface of the squeegee holder 1 or the lower surface of the adjustment plate 2 is formed of a magnet 3, and the other is formed of a metal that is attracted to the magnet.
The squeegee holder 1 was attached to the support frame 6 by adsorbing it to the adjustment plate 2 and tightening the clamp bolt 4.

That is, the adjustment work is simplified by just tightening the clamp bolt once, and since the squeegee holder is attracted by a magnet, there is no possibility that the squeegee holder will fall and damage the screen.

Problems to be Solved by the Invention However, in the above configuration, since a magnet is used to prevent the squeegee holder from falling, iron powder, etc. may adhere to the magnet and enter between the squeegee holder and the adjustment plate. Since the squeegee holder is not installed parallel to the base or the installation height changes, there is a problem in that high-precision printing cannot be performed in conductor printing machines for forming electronic circuits, etc., which require delicate adjustments. Furthermore, as the printing area increases, the squeegee also becomes heavier, so it is necessary to increase the attraction force of the magnet that attracts the squeegee holder. Therefore, when the suction force becomes strong, it becomes difficult to attach and detach the squeegee holder from the adjusting plate, which is a problem for this type of device aimed at improving workability.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a squeegee holder mounting device for a printing press that allows the squeegee holder to be easily positioned and fixed with reliability and accuracy.

Means for Solving the Problems In order to solve the above-mentioned problems, the squeegee holder mounting device for a printing press of the present invention includes a squeegee holder that clamps and holds a squeegee, and a top and side surface of this squeegee holder that is attached to an inner wall. a main holder with a concave cross-sectional shape to be attached together; a plurality of tapered holes provided on the outer side of the squeegee holder; and a squeegee holder drop prevention pin whose tip engages with one of the tapered holes so as to be freely retractable. , a clamp bolt whose tip can be inserted into another tapered hole and whose tip is offset from the center and has a conical tip, and the fall prevention pin and the clamp bolt are attached to the side wall of the main holder. It is.

According to the above-described structure, the present invention temporarily fixes the fall prevention pin to the squeegee holder by engaging it with one tapered hole provided in the squeegee holder, and then clamps it in the other tapered hole provided in the squeegee holder. By tightening the conical tip of the bolt, the squeegee holder can be easily and accurately attached to the main holder without falling.

Embodiment Hereinafter, a squeegee holder mounting device for a printing press according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a front view of essential parts of a meter holder mounting device for a printing press according to an embodiment of the present invention. In FIG. 1, reference numeral 6 denotes a printing head frame of a screen printing machine, to which an air cylinder 8 for moving a squeegee 7 up and down is attached. A base plate 9 is fixed to the tip of the air cylinder 8, and a block 1o is attached to the base plate 9.

Further, a swinging block 12 is fitted to be swingable about a pin 11 fixed to the block 10 as a fulcrum. A swing plate 13 is provided on the top surface of the swing block 12.
A compression spring 14 is held between the swing plate 13 and the base plate 9.

At a position opposite to the compression spring 14 with the pin 11 as the center, there is a micrometer head 1 on the base plate 9, the amount of protrusion of the tip being adjustable so that the tip comes into contact with the swing plate 13.
5 is installation. The swing block 12 has a shaft 16
is fixed through the main holder 17, and the main holder 17 is fitted on both ends of the main holder 17, and is fixed with bolts 18 at the required angle as shown in FIG. 19 is a squeegee holder that holds and holds the squeegee 7, and as shown in FIGS. 1, 3, and 5, there are fall prevention pins 20. Clamp Pol 6 /\
-7 A tapered hole 22 is provided at each position to engage with the toe 21. A compression spring 23 is inserted into the fall prevention pin 20, and a ball 24 is provided at the tip of the pin 20 so as to be freely retractable.

Further, as shown in FIG. 6, the centers of the clamp bolts 21 and the tapered holes 22 are such that the centers of the clamp bolts 21 and the tapered holes 22 are aligned with each other when the top surface of the squeegee holder 19 is in contact with the bottom of the concave groove of the main holder 17. It is located below the center.

In FIG. 1, reference numeral 25 denotes a guide shaft through which the squeegee moves up and down, one end of which is fixed to the base plate 9 and slidably fitted into the head frame 6. Numeral 26 is a double nut screwed into the piston end 27 of the air cylinder 8, and the amount of tightening of the double nut adjusts the gap between the nut and the cylinder end 28, thereby adjusting the amount of vertical movement of the squeegee 7. The clamp lever 29 shown in FIGS. 1 and 4 is used to adjust the parallelism of the squeegee 7 to the screen surface of the screen printing machine.
By adjusting the amount of protrusion of the tip of the micrometer head 15 using the base plate 7 as a fulcrum, the swing block 12 is adjusted to a desired angle via the base plate 7 and the shaft 9, and then the swing block 12 is tightened by tightening this clamp lever 29. to be fixed. That is, since the squeegee 7 is attached to the swing block 12 via the shaft 16, main holder 17, and squeegee holder 19, the squeegee 7 is fixed at a desired angle.

In the printing press squeegee holder mounting device configured as described above, by inserting the squeegee holder 19 into the recessed groove of the main holder 17, the squeegee holder 1
The ball 24 at the tip of the fall prevention pin 20 provided in the main holder 17 in one of the tapered holes 22 of 9 is connected to the compression spring 23.
It is pressed together and temporarily fixed. Next, clamp bolt 21
By tightening the squeegee, the conical tip comes into contact with the tapered hole 22 of the squeegee holder 19, but since the clamp bolt 21 and the tapered hole 22 are off-center as described above, as shown in FIG. Clamp bolt 21
The squeegee holder 19 is pressed upward (in the Y direction) and to the left (in the X direction) by the conical tip of the squeegee holder.

That is, the squeegee holder 19 is firmly fixed to the main holder 17.

As described above, according to this embodiment, the squeegee holder 19 is provided with a plurality of tapered holes 22, the main holder 1a is provided with a fall prevention pin 2o at a position that engages with one of the tapered holes 22, and the other is provided with a fall prevention pin 2o. By providing a clamp bolt 21 with a conical tip off-center from the tapered hole 22 at a position where it engages with the tapered hole 22, the squeegee 7 can be securely attached to the main holder 17 just by tightening the clamp bolt 21 once. Easy to install with high precision.

Effects of the Invention As described above, the present invention provides a squeegee holder that clamps and holds a squeegee, a main holder with a concave cross-section that is attached by engaging the top and side surfaces of the squeegee holder with an inner wall, and A plurality of tapered holes provided on the outside of the side surface, a squeegee holder drop prevention pin whose tip engages in one of the tapered holes so as to be freely retractable, and a squeegee holder fall prevention pin whose tip can be inserted into the other tapered hole and whose center is offset. The squeegee holder can be temporarily fixed by simply inserting the squeegee holder into the main holder by providing a clamp bolt with a 9-conical tip and the fall prevention pin and the clamp bolt on the side wall of the main holder. It won't fall.

Furthermore, the squeegee holder can be securely fixed tightly to the main holder by simply tightening the clamp bolt once, so if you adjust the clamp bolt temporarily and then fully tighten it, paying attention to the inclination as before, the squeegee holder can be firmly fixed to the main holder. The squeegee can be installed easily and accurately without foreign objects such as metal powder being adsorbed.

[Brief explanation of the drawing]

FIG. 1 is a front view of essential parts of a squeegee holder mounting device for a printing press according to an embodiment of the present invention, FIG. 2 is a partial sectional view of the swing block section taken along the line A-A in FIG. 1, and FIG. 1st
A partial sectional view of the fall prevention pin section in the AA cross section of the figure,
4 is a partial sectional view of a part of the clamp lever taken along the BB cross section in FIG. 1, FIG. 6 is a partial sectional view of the clamp bolt section taken along the CC cross section in FIG. 1, and FIG. A partial enlarged sectional view showing a state in which the tip of the clamp 10 and the tapered hole 22 are in contact with each other, and FIG. 7 is a sectional view of the main part of a conventional squeegee holder mounting device for a printing press. 1A... Main holder, 19... Squeegee holder, 2o... Fall prevention pin, 21...
...Clamp bolt, 22...Tapered hole.

Claims (1)

[Claims] A squeegee holder that clamps and holds the squeegee, a main holder with a concave cross section to which the squeegee holder is attached by engaging an inner wall with its top surface and side surfaces, and a plurality of tapered sections provided on the outer side of the squeegee holder. a squeegee holder fall prevention pin whose tip engages in one of the tapered holes so as to be freely protrusive and retractable; and a clamp bolt with a conical tip whose tip can be inserted into the other tapered hole and is offset from the center. A squeegee holder mounting device for a printing press, characterized in that the fall prevention pin and clamp bolt are mounted on a side wall of the main holder.