JPH05338122A - Printing plate cleaning device - Google Patents

Abstract

PURPOSE:To provide an excellent printing plate cleaning device which can wipe off a cream solder crowded out on the lower surface of a printing plate perfectly. CONSTITUTION:The subject printing plate cleaning device is equipped with a cleaning cloth 3 for wiping off a cream solder on the lower surface of a printing plate 1, a feed reel 4 which feeds a cleaning cloth, a winding reel 5 which winds the cleaning cloth 3 and two rollers 2 which press the cleaning cloth 3 against the lower surface of the printing plate. The cleaning cloth 3 is moved in such a state that the cleaning cloth 3 is pressed against the lower surface of the printing plate 1 at two places, using two rollers 2. Consequently, it is possible to increase a contact part between the cleaning cloth 3 and the lower surface of the printing plate 1 so that the perfect wiping off of the cream solder is ensured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing plate cleaning apparatus used in a cream solder printing apparatus for printing cream solder on the surface of a printed board in order to mount various electronic parts on the printed board.

[0002]

2. Description of the Related Art FIG. 2 is a schematic side view of a conventional printing plate cleaning apparatus. In FIG. 2, 11 is a printing plate, and cream solder is supplied to the upper surface thereof. 12
Is a roller, and 13 is a cleaning cloth. The cleaning cloth 13 is supplied from the supply-side reel 14, passes between the printing plate 11 and the roller 12, and is wound around the take-up reel 15. Reference numeral 16 denotes a spring, which biases the roller 12 upward to move the cleaning cloth 13 to the printing plate 1.
Energize the lower surface of 1. 17 is a side plate, which is a roller 12,
A supply-side reel 14 and a take-up reel 15 are attached respectively.

In the conventional printing plate cleaning apparatus constructed as described above, when the side plate 17 moves in the direction of arrow A, the cleaning cloth 13 moves while being pressed against the lower surface of the printing plate 11, and the printing plate The cream solder protruding to the lower surface of 11 can be wiped off.

[0004]

However, in the above-mentioned conventional printing plate cleaning apparatus, since the lower surface of the printing plate 11 and the cleaning cloth 13 are in contact with each other at one place, a large amount of cream is applied to the lower surface of the printing plate 11. There was a problem that the cream solder could not be wiped off reliably when the solder was squeezed out.

The present invention solves such a conventional problem, and is an excellent printing plate cleaning apparatus capable of reliably wiping off the cream solder even when a large amount of cream solder is squeezed out on the lower surface of the printing plate. It is intended to provide.

[0006]

In order to achieve the above object, the present invention has a cleaning cloth for wiping off cream solder protruding from the lower surface of a printing plate, a supply reel for feeding the cleaning cloth, and the cleaning cloth. It is provided with a take-up reel and two rollers for pressing the cleaning cloth against the lower surface of the printing plate.

[0007]

According to the present invention, therefore, the cleaning cloth is moved by pressing the cleaning cloth against the lower surface of the printing plate at two points by the two rollers, so that the contact portion between the cleaning cloth and the lower surface of the printing plate is moved. The amount of cream solder can be increased, and the cream solder can be reliably wiped off even when a large amount of cream solder protrudes from the lower surface of the printing plate.

[0008]

1 shows a schematic side view of an embodiment of the present invention. In FIG. 1, reference numeral 1 is a printing plate on which cream solder is supplied. Reference numeral 2 is a roller, and two identical rollers are provided. 3 is a cleaning cloth, which is supplied from the supply-side reel 4 and passes between the printing plate 1 and the roller 2, and the take-up reel 5
It is wrapped around. 6 is a spring, and two rollers 2
Is urged upward, the cleaning cloth 3 is urged to the lower surface of the printing plate 1 at two locations over the entire length of the width of the printing plate 1. Reference numeral 7 denotes a side plate, to which the two rollers 2, the supply-side reel 4, and the take-up reel 5 are attached.

Next, the operation of the above embodiment will be described. In FIG. 1, the roller 6 is biased upward by the spring 6 to press the cleaning cloth 3 against the lower surface of the printing plate 1 at two points. At this time, the supply-side reel 4 and the take-up reel 5 are in a locked state by the braking means (not shown). In this state, when the side plate 7 moves in the direction of the arrow A, the cleaning cloth 3 moves while being pressed against the lower surface of the printing plate 1, and the cream solder sticking out to the lower surface of the printing plate 1 is removed. Can be wiped over the entire width. At this time, first, of the two rollers 2, the portion of the cleaning cloth 3 urged by the roller 2 preceding in the moving direction wipes off the cream solder protruding to the lower surface of the printing plate 1. Even when a large amount of cream solder is protruding, even if a residual unwiping occurs, the cream solder is surely wiped off by the cleaning cloth 3 of the portion that is urged by the two rollers 2 and comes into contact with the lower surface of the printing plate 1. be able to.

The side plate 7 moves in the direction of arrow A, and the printing plate 1
When the cream solder wiping operation from one end to the other end is finished, the take-up reel 5 is slightly rotated in the direction of arrow B by the driving means (not shown), and the cleaning cloth 3 is slightly fed in the direction of arrow C. As a result, the cream solder attached to the cleaning cloth 3 is sequentially removed from the contact portion with the printing plate 1 and wound on the winding reel 5, and a new amount of the cleaning cloth 3 is delivered from the supply reel 4 by a predetermined amount.

As described above, according to the above-described embodiment, the cleaning cloth 3 is moved while the cleaning cloth 3 is urged toward the lower surface of the printing plate 1 by the two rollers 2 so that the two rollers 2 are moved. By the cleaning cloth 3 which is in contact with the lower surface of the printing plate 1 during the period, the cream solder protruding to the lower surface of the printing plate 1 can be wiped surely over the entire length of the width of the printing plate 1.

[0012]

As is apparent from the above-described embodiment, the present invention moves the cleaning cloth while pressing the cleaning cloth against the lower surface of the printing plate by the two rollers at two positions, thereby printing the cleaning cloth and the printing cloth. The contact area with the lower surface of the plate can be increased, and the cream solder can be reliably wiped off even when a large amount of cream solder protrudes from the lower surface of the printing plate.

[Brief description of drawings]

FIG. 1 is a side view of a printing plate cleaning apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of a conventional printing plate cleaning device.

[Explanation of symbols]

 1 Printing Plate 2 Roller 3 Cleaning Cloth 4 Supply Side Reel 5 Winding Reel 6 Spring 7 Side Plate

Claims (1)

[Claims] 1. A cleaning cloth for wiping off cream solder protruding to the lower surface of the printing plate, a supply reel for feeding the cleaning cloth, a take-up reel for winding the cleaning cloth, and the cleaning cloth pressed on the lower surface of the printing plate. A printing plate cleaning device equipped with two rollers.