JPH028589B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiping device for wiping off excess ink transferred to an intaglio surface in an intaglio printing press.

In printing operations using an intaglio printing machine, ink is transferred to the intaglio surface on the intaglio cylinder by an inking device, and the ink that has adhered to areas other than the picture area of the transferred ink is rotated against the intaglio surface. After wiping with a wiping roller, the remaining ink of the pattern is transferred to the paper that passes between the intaglio cylinder and the impression cylinder to perform printing. The wiping roller is rotated while being immersed in a cleaning liquid such as Triclean placed in a liquid tank, and a plurality of brushes extending in the axial direction are in contact with the peripheral surface of the wiping roller in the liquid. The ink transferred to the wiping roller by wiping is removed by the cleaning action of the brush and the cleaning liquid, and is dissolved by the cleaning liquid.

Conventionally, the structure of the brush used in this wiping device is a fixed type fixed to a bracket below the wiping roller, a rotating brush type, or a type that uses a hard rubber scraper instead of a brush. However, with fixed type brushes, the brushes often wear out on one side, and the machine must be stopped to adjust or replace them, so after restarting operation, the amount of ink output changes and the adjustment is difficult. The drawbacks were that it took a long time to complete the process and a lot of paper was wasted during that time.
In addition, rotating brush types not only tend to accumulate grime and cause the above-mentioned problems when the machine is stopped for maintenance, but also agitate the cleaning solution, making it cloudy and reducing the cleaning effect, so the cleaning solution must be replaced frequently. There was a drawback.

The present invention has been made in view of the above points, and includes a brush receiver whose swing can be freely adjusted, which is pivotally attached to the free end of a swing arm that extends from a support shaft on the liquid tank side to a position below the wiping roller. The pair of main brushes are rotatably supported by the wiping roller, and the swinging arm is configured to be swingable from outside the liquid tank. The main, pre, and rear brushes can be operated with a simple structure by rotatably supporting the rear brush on a swinging arm that can be swing-operated from outside the liquid tank and adjusting the movement forward and backward relative to the wiping roller. To provide a wiping device for an intaglio printing press, which makes it possible to adjust the pressure individually in order to uniformize the wiping action, prevent uneven wear, and enable long-term continuous use. Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 5 show an embodiment of the wiping device according to the present invention, FIG. 1 is a sectional view thereof, and FIG.
The figure is a side view of the main brush support, FIG. 3 is a side view of the stopper, FIG. 4 is a plan view of the main part and a sectional view of the vicinity of the brush receiver for the main brush, and FIG. 5 is a oscillation between the pre-brush and rear brush. FIG. 2 is a side view of the dynamic adjustment mechanism and a cross-sectional view of its main parts. In the figure, liquid tank 1
A cleaning liquid 2 is stored therein, and the wiping roller 3 is rotatably supported in the liquid tank 1 with its lower half immersed in this cleaning liquid 2. 5 and rotates in the opposite direction. On the side of the liquid tank 1, there is an arm support shaft 7 whose shaft end is sealed with a gasket 6.
It is rotatably supported by bushes 8 fitted on both side walls of the liquid tank 1 and bearings 9 fixed to the side walls.
A wiping roller 3 is attached to the free end of the arm support shaft 7.
A pair of swing arms 10 located below both ends of the wiping roller 3 are fixed with bolts 11. A long brush bearing support shaft 12 is rotatably supported. A pair of brush receivers 13 formed in an arc shape along the circumferential surface of the wiping roller 3 are fixed to the brush receiver support shaft 12 adjacent to each swing arm 10. A pair of brush shafts 14 are supported. A pair of main brushes, designated as a whole by reference numeral 15, include a holder 16 fixed to both ends of each brush shaft 14, and a holder 16 that supports both ends of the brush so that the bristles are brought close to the circumferential surface of the wiping roller 3. The wiper pad 18 is formed of a non-woven synthetic fiber fabric between the tips of the brushes 17 of both main brushes 15 and the circumferential surface of the wiping roller 3. It is interposed over the entire length and is fixed to the side surface of the brush 17 with a plate 19 and bolts 20.

The main brush 15 supported in this manner is provided with a pressure adjusting device for the wiping roller 3 . That is, the arm support shaft 7
Below the worm shaft 21, a worm shaft 21 is pivotally supported by the side wall of the liquid tank 1 and a bracket 22 fixed to this.
3 is meshed with a fan-shaped worm wheel 26 which is fixed with a key 25 and whose movement in the axial direction is restricted by a collar 24 on the arm support shaft 7 . A handle 27 is attached to the outside protrusion of the worm shaft 21, and by rotating the handle 27, the swing arm 10 swings via the worm 23 and the worm wheel 26, and the main brush 15 is rotated. The pressure of the covering wiper pad 18 on the wiper roller 3 is adjusted. As shown in FIG. 2, a stop lever 28 is attached to the arm support shaft 7.
is fixed and faces the tip of an adjustment bolt 30 that is screwed into the stud 29 on the side of the liquid tank 1 so as to be able to move forward and backward, and by rotating the adjustment bolt 30, the upper limit of rotation of the swing arm 10 can be adjusted. is regulated to prevent the pressure of the main brush 15 from becoming excessive. Also, Figures 3 and 4
As shown in the figure, a stopper 32 equipped with an adjustment bolt 31 is pivotally attached to the arm support shaft 7 to prevent the swinging arm 10 from rotating excessively in the counterclockwise direction in the figure. It is configured. Furthermore, an auxiliary plate 33 is protruded from the free end of the swing arm 10, into which a pair of adjustment bolts 34 are screwed with their tips abutting the holder 16.
The inclination angle of the brush receiver 13 is adjusted via the holder 16 by rotating the adjustment bolt 34.

Further, a pair of pivot shafts 35 and 36 are respectively supported diagonally downward on both sides of the wiping roller 3 via bushings 37 on the side wall of the liquid tank 1, and a brush arm 38 is attached to the protrusion inside the liquid tank 1. and 39 are fixed. A semi-circular bearing portion is formed at the upper end of the pair of brush arms 38 on one side, and a brush shaft 40 is rotatably supported between the bearing portions. A pre-brush 41 having the same structure as the main brush 15 and a wiper pad 42 having the same structure as the wiper pad 18 covering the pre-brush 41 are fixed to the brush shaft 40 in contact with the circumferential surface of the wiper roller 3. A brush shaft 43 is rotatably supported between the bearings provided on the other pair of brush arms 39, and this brush shaft 43 has the same structure as the pre-brush 41 which also has a wiper pad 44. A rear brush 45 is fixed.

Both brushes 41, 45 supported in this way
is equipped with a pressure regulating device for the wiping roller 3. That is, the pivots 35, 3
Lever 46, 47 is pivotally attached to the external protrusion of liquid tank 6, respectively, and the threaded portion of the other end of rod 48, 49 pivotally attached to each lever 46, 47 is connected to a bearing 50 at one corner of liquid tank 1. Adjustment screws 51, 52 pivoted on
are screwed into the screw holes at the tip of each. Then, loosen the lock nuts 53 and 54 and tighten the adjustment screw 5.
By rotating the rods 1 and 52 while restricting their movement in the axial direction, the rods 48 and 49 are inserted into the screw holes.
moves forward and backward, levers 46, 47 and brush arm 3
The pressure applied to the wiper roller 3 by the pre-brush 41 and the rear brush 45 is adjusted separately through the wiper rollers 8 and 39. Further, the brush arms 38 and 39 are provided with auxiliary plates 55 and 5.
Adjustment bolts 57 and 58 are screwed into these with their tips in contact with the respective brushes 41 and 45, and by adjusting the rotation of these bolts, the pre-brush 41 and rear brush 45 can be adjusted. The inclination angles are configured to be adjusted separately.

Reference numeral 59 denotes a doctor fixed to the upper surface of the liquid tank 1 by a bolt with a handle 60, and the tip thereof is brought into contact with the circumferential surface of the wiping roller 3 to scrape off the cleaning liquid 2 adhering thereto. A doctor blade 61 made of hard rubber is fixed by a holder 62, and by loosening a handle 60 and rotating another handle 63, the doctor blade 59 moves forward and backward to close the gap between the doctor blade 61 and the wiping roller 3. configured to be regulated. Further, a wiping roller 3 is provided below the doctor blade 61.
A pad 64 made of synthetic fiber nonwoven fabric that prevents the cleaning liquid 2 from moving around is supported by a plate spring 66 via a holder 67 on a bracket 65 fixed to the liquid tank 1.

In the wiping device configured as described above, ink is transferred to the groove-shaped pattern portion and other portions of the intaglio plate 5 on the intaglio cylinder 4 by the inking device, and the ink other than the pattern portion is transferred. , intaglio cylinder 4
It is wiped off by the wiping roller 3 rotating in the opposite direction and adheres to the surrounding surface. The lower half of the wiping roller 3 is immersed in the cleaning liquid 2, and the drawing of the immersed part shows four brushes 41, 1.
wiper pads 42, 18, which cover 5, 15, 45;
44 are in contact with each other, the ink that has adhered to the circumferential surface of the wiping roller 3 due to wiping is removed by the cleaning liquid 2 that has permeated into each wiper pad 42, 18, 44.
is removed by the dissolving action of the wiper pads 42, 18, and 44. The wiping roller 3 from which the ink has been washed away is carried around with only the cleaning liquid 2 attached to its circumferential surface, but there is a pad 6.
4 and a doctor blade 61, the rotated cleaning liquid is scraped off by these, and the wiping roller 3 continues its ink wiping operation.

In such a wiping operation, each brush 41, 15, 15, 45 wipes the wiper pads 42, 1.
8, 44, the flat surfaces of the wipe pads 42, 18, 44 containing the cleaning liquid 2 are completely covered by the spring action of the brushes 41, 15, 45, unlike in the case of only brushes with limited density. Since it is pressed against the circumferential surface of the wiping roller 3, the ink cleaning effect is extremely good.
The pair of main brushes 15 are configured such that the brush receivers 13 that support the brush receivers 13 are pivotally supported by the swing arm 10, and an adjustment bolt 34 is provided. The angle can be adjusted freely, and either of the pair of main brushes 15 can be pressed against the peripheral surface of the wiping roller 3 with the same pressure without being single-handed. Further, by providing the worm 23, the worm wheel 26, and the handle 27 for rotating the worm 23, when the handle 27 is rotated from outside the liquid tank 1, the swing arm 10
oscillates, and the pressure of the entire main brush 15 against the wiping roller 3 can be freely adjusted, and can be adjusted during operation. Further, since the pre-brush 41 and the rear brush 45 are rotatably supported via the brush shafts 40 and 43, and are provided with adjustment bolts 57 and 58, by adjusting these, each brush 41,
The inclination angle of the wiper pads 45 can be freely adjusted, the brushes 41 and 45 are not single-handed, and the entire surfaces of the wiper pads 42 and 44 can be uniformly pressed against the circumferential surface of the wiping roller 3. In addition, the pivots 35 and 36 that are integral with the brush arms 38 and 39 that support the brushes 41 and 45 are connected to the lever 4.
6, 47 and rods 48, 49 to adjust the adjustment screw 51,
52, when the adjustment screws 51 and 52 are rotated from outside the liquid tank 1, the brush arm 3
8 and 39 swing, the pressure of each brush 41 and 45 against the wiping roller 3 can be freely adjusted, and furthermore, the adjustment can be made during operation.

Note that in this embodiment, each brush 41, 1
5 and 45 are covered with the wiper pads 42, 18, and 44, but the wiper pads 42, 18, and 4
The bristles of the brushes 41, 15, 45 may be brought into direct contact with the circumferential surface of the wiping roller 3 without providing the wiping roller 4.

As is clear from the above description, according to the present invention, in the wiping device of an intaglio printing press, the brush receiver is provided with a swing-adjustable brush receiver at the free end of the swing arm extending from the support shaft on the liquid tank side to the bottom of the wiping roller. A pair of main brushes are pivotably supported at both ends of the main brushes, and a swinging arm is configured to be swingable from outside the liquid tank. The pre-brush and rear brush, which are arranged in parallel on both sides, are rotatably supported by a swinging arm that can be swing-operated from outside the liquid tank, and are configured to be able to move forward and backward relative to the wiping roller. Each brush can be operated from outside the liquid tank while the machine is running, and the pressure applied to the wiping roller can be adjusted individually, making it possible to adjust while monitoring the wiping condition, resulting in extremely uniform wiping without uneven wiping. In addition to being able to adjust the inclination angle of each brush individually, the pressure of the brush against the wiping roller is uniform and the brush does not wear out unevenly, increasing the durability of the brush. In addition to this, together with the ability to adjust the pressure during operation, the operating rate of the machine increases, work efficiency improves, and it is possible to eliminate fluctuations in ink output and the occurrence of paper waste due to machine stoppages. . In particular, after setting the pressure for the entire pair of main brushes, individual pressure unevenness can be corrected by adjusting the inclination angle of one brush, so accurate set pressure can be obtained in a short time. , the effect is remarkable.

[Brief explanation of drawings]

1 to 5 show an embodiment of the wiping device for an intaglio printing press according to the present invention, in which FIG. 1 is a sectional view thereof, FIG. 2 is a side view of the main brush support, and FIG. 3 is the same. A side view of the stopper, FIG. 4 is a plan view of the main part and a sectional view of the vicinity of the brush receiver for the main brush, and FIG. 5 is a side view of the swing adjustment mechanism for the pre-brush and rear brush and a sectional view of the main part. . 1...Liquid tank, 2...Cleaning liquid, 3...Wiping roller, 5...Intaglio, 7...Arm spindle, 10...
Swing arm, 13... Brush receiver, 15... Main brush, 23... Worm, 26... Worm foil, 27... Handle, 38, 39... Brush arm, 41... Pre brush, 45... Rear brush, 51, 52... Adjustment screw, 57, 58...
Adjustment bolt.

Claims (1)

[Claims] 1. A wiping roller immersed in the cleaning liquid in a liquid tank and driven to rotate in contact with the intaglio plate on the intaglio cylinder, and a wiping roller that is swing-adjusted toward the liquid tank side so as to move the free end portions up and down below both ends of the wiping roller. A brush holder is rotatably installed between a pair of freely supported arms and both ends of a brush holder pivotally attached to the free end of each arm, and the wiping end is brought into contact with the circumferential surface of the wiping roller. A pair of main brushes,
A brush receiver swing adjustment member interposed between the arm and the brush receiver, and a free end portion of the wiping roller on both sides in the circumferential direction relative to the main brush are moved forward and backward relative to the circumferential surface of the wiping roller. A pair of front and rear swinging arms are swingably supported on the liquid tank side, and a pair of swinging arms is rotatably installed between the free ends of each pair of swinging arms, and the wiping end is connected to the wiping roller. A wiping device for an intaglio printing press, characterized in that a pre-brush and a rear brush are placed in contact with the circumferential surface of the wiping device, and a brush advance/retreat adjusting member is interposed between each of these brushes and the swing arm.