JPH0390360A - Washing device of blanket cylinder - Google Patents

Abstract

PURPOSE:To increase washing capacity and clean with a little consumption of washing cloth in a short washing time by moving the washing cloth in the direction opposite to the rotating direction of a part to be washed such as a blanket cylinder with washing liquid being supplied to the washing cloth from its rear. CONSTITUTION:A washing cloth is spread between two points 8, 9, and an ejection pipe 11 with a nozzle 10 through which washing liquid is ejected to the washing cloth from its rear, is provided behind the cloth 7. One 8 of the two points for supporting the washing cloth 7 tightly is formed at one end of a stretching member 17 having angular cross-section. The other point 9 is formed with a circular part at the tip of a plate-like stretching member 18 fixed to the stretching member 17. The one supporting point 9 has a longer distance from the tip 19 of the member 17 than the other supporting point 8. The longer supporting point 9 is oriented in the direction opposed to the rotating direction A of a part to be washed such as a blanket cylinder 4. The stretching member 17 extends from one side wall 20 to the other side wall 21 and is fixed to the both side walls through a blanket 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning device for blanket cylinders and the like used in printing.

[Conventional technology]

Conventionally, as a cleaning device for the outer circumferential surface of Plankera, etc. used in printing, a member that presses the cleaning cloth against the outer circumferential surface of the blanket cylinder! It is known that they are in linear contact.

[Problem to be solved by the invention]

The above-mentioned conventional cleaning device has a poor cleaning capacity per unit time, so one cleaning takes a long time, a large amount of cleaning cloth is used, and the structure is complicated.

The present invention aims to provide a cleaning device that has excellent cleaning performance per unit time, can perform cleaning in a short cleaning time and with a small amount of cleaning cloth, and has a simplified structure.

[Means to solve the problem]

In order to achieve the above purpose, cleaning cloth is stretched between two points and supplied to the blanket cylinder, impression cylinder, and in*.

- The cleaning cloth is configured to be brought into surface contact with the outer periphery of the object to be cleaned, such as a roller, and to move the cleaning cloth in a direction opposite to the rotating direction of the object to be cleaned, such as a blanket cylinder, while supplying cleaning liquid to the cleaning cloth from the back side. ing.

〔Example〕

Although the cleaning device of the present invention can be used in various printing machines, an embodiment applied to an offset printing machine will be specifically described with reference to the drawings.

Figure 7 shows an offset printing machine, in which ink is supplied from the ink fountain (1) to the ink supply roller group (2) and the plate cylinder (
3) is applied to the printing plate, and the ink of the image is transferred from the printing plate to the outer peripheral surface of the rubber blanket cylinder (4), and the printing is sent from the blanket cylinder (4) between it and the printing press (5). Transfer to paper (6). In this printing process, garbage 1
Adhesives such as paper powder and ink may be deposited on the blanket cylinder (4).
(5) If it adheres to the ink supply roller group (2) etc., the quality of printing will deteriorate.

To remove the above deposits, use two cleaning cloths (7) (8)
, (9), and is provided on the back side of the cleaning cloth (7) with a spray pipe aυ having nozzles α and Q for spraying cleaning liquid onto the cleaning cloth (7) from the back side thereof.

The cleaning cloth (7) is made of non-woven fabric and has a core body (6) in the form of a scroll.
The core body is fitted onto the cloth supply shaft 0, and a certain brake is applied to this cloth supply shaft. One end of the cleaning cloth (7) is wound around the cloth winding shaft (4) via two points (8) and (9) 1, and then wound up on the winding shaft. New cleaning cloths (7) are sequentially supplied to the cleaning position by winding them up.

One of the two points (8) that tensionably supports the cleaning cloth 47) is formed at one end of the tensioning member (sha) having a mountain-shaped cross section, and the other (8)
9) is a plate-shaped tension member (
It is formed by the circular part at the tip of (to). One support point (9) is closer than the other support point (8) to the object to be cleaned, such as the member (vertex 17+ (the distance from 11 is longer, the longer support point (9) is the planner) jfi (4), etc. The tension member <177 extends from one side wall to the other side wall C1) and is fixed to both side walls via brackets. Specifically, the bracket @ is fixed to the side wall (c) with a pole) H and a nut, and the tension member (5) is fixed to the bracket by welding, and the tension member α force also has the function of a spacing member between the side walls (1) and (c). An injection pipe (6) is fixed to the corner of this tensioning member α, and this injection pipe is also attached to both side walls (1).
), 09. The nozzles 0 attached to the injection pipe (G) are arranged at equal intervals so that the cleaning liquid is distributed over the entire width of the cleaning cloth (7).

The cloth supply shaft 0 and the cloth winding shaft (2) have the same dimensions and are slightly shorter than the distance between the side walls (1) and (c), and each shaft is a hollow body.

The cloth supply shaft tilt has connection seats (E) fixed to both ends thereof, and a terminal plug (2411) is inserted into this connection seat and connected with a bolt @ passing through the plug.The terminal plug @ is supported. /Kerat@ is fixed to the side wall (1), and the terminal plug (2) is inserted into the socket from its opening.
is inserted and closed with a lid for the socket. The lid holder is separably connected by screwing a bolt (1) into a connecting seat Oυ in the socket holder. Ko(D'iM
By opening the plug (2), the plug (2) is separated from the socket, and the cloth supply shaft a3 can be removed from the socket holder or inserted into the socket. This allows a new cleaning cloth (7) to be supplied to the gold cleaning apparatus.

The cloth winding shaft (T) has a terminal plug (
The plug has two prongs (to), and two prongs (to) are fitted into the plug, and are connected to each other by bolts (2).

- The knocket (to) is rotatably supported in only one direction by a bearing (to) fixed to the side walls (1) and (c) via a one-way clutch (to). When you remove bolt T34,
The plug 03 is separated from the keratome and the cloth winding shaft (2) can be removed from the device. Thereby, the wound cleaning cloth (7) can be removed from the winding shaft (2) and the empty winding shaft (4) can be assembled into the apparatus again.

Is there cloth feed arm C3 in the socket (to)? )X5: This arm 03 is fitted through a one-way clamp
? ) is connected to the piston rod (4G) of the air cylinder T39 by a pin (41). When the piston rod (9) is linearly reciprocated by the air cylinder Gl, the cloth feed arm 037) Swinging, one-way clutch (
The cloth winding shaft (to) is rotated only in one direction as shown by arrow B. Due to this rotation of the winding shaft (to), the winding shaft (4) winds up the cleaning cloth (7) on the cloth supply shaft □□□.

A thin elongated hole (8) is formed over the entire length of the winding axis υ, and the presser foot (43) is formed over the entire length of this elongated hole.
is inserted. This presser foot (43) is a linear insertion portion (4ω) slightly shorter than the diameter of the winding shaft (2), and the presser foot portion 0! is bent from one end along the winding shaft (4).
19, and the cross-sectional shape of these parts is the winding shaft (2).
Noha! It extends uniformly over the entire length. Push the winding end (46) of the cloth into the winding shaft through the long hole (4) of the winding shaft (4) using the insertion part GI41 of the cloth presser foot (43), and then wind it up using the presser foot (4!19). When it is pressed against the shaft and the winding shaft is rotated seven times, the winding end of the cloth is firmly connected to the winding shaft.

The double feed arm (b) has its swinging center Gi? ) extends from the control arm (41) in the opposite direction to the arm, and a guide groove O9 is formed in the control arm.The slider (53 is the control arm (4F
j, and a control pin (to) is fixed to the slider 53. One end of the control pin (to) is connected to the side wall (1
), and swings between both side edges of this groove to limit the swing angle of the double feed arm (B) and, in turn, the rotation angle of the winding shaft (G). And as a result, the cloth feed arm is 0? ) Determine the feeding length of the reciprocating cloth (7).

A control roller (to) is loosely fitted to the other end of the control pin, and the roller slides a slider 153 onto the cloth (7) on the winding shaft (g).
, a bottle (to), a roller (to), etc. that are in contact with each other due to gravity.

Therefore, as the winding diameter of the cloth (7) increases, the roller (to) follows the diameter of the cloth and moves the bottle (53) to the winding shaft (4) via the control arm (4) and the slider 63. Move it in the direction away from the center on the extension line of its radius.Therefore, the swing angle of the bin becomes smaller, and as a result, the swing angle of the cloth feed arm also decreases, so that the winding length of the cloth is always constant. The air cylinder 01 is attached to the inside of the side wall (1) by means of a bracket.
), and the rear ends are connected by connecting rods 67), (to). The connecting shaft is connected to ■υ in the side wall by a shaft (51), and a roller is fitted to the shaft (toward), and the roller is transferred onto the rail 11.The air cylinder information is connected to the rail 0. The piston rod is connected to the side wall (1). When the side wall gD canier cylinder is sent to the right on the rail desk, the tensioning member αη, (2) approaches the blanket cylinder (4) and marks two points (8) and (9) on the outer peripheral surface of the cylinder. Press the part of the cloth (7) stretched between them, and when the inside of the side wall is sent from that position to the left by an air cylinder, the cloth (7)
It is separated from the Kablankerat torso (4).

Washing S The cloth (7) is sent intermittently by a piston rod (about 7 reciprocations of 4G, ha!), and the cleaning liquid is sprayed from the nozzle αυ onto the sent cloth, and the blanket ff1J ( 4). After this cleaning is repeated IO times, stop spraying the cleaning liquid and wash the cleaning cloth (
7) Woha! Send it about 70 times to wipe off the cleaning liquid on the surface to be cleaned. During this time, the blanket (4) was 600 f1 per hour.
It has rotated 0 to 7000 times.

〔Effect of the invention〕

As described above, the present invention provides cleaning of the blanket cylinder, impression cylinder, ink supply roller, etc. used for printing by impregnating the cleaning cloth (7) stretched between the two points (8) and (9) with cleaning liquid. The cleaning cloth is pressed against the outer peripheral surface of the body, and the cleaning cloth is sent in a direction opposite to the direction of rotation of the body to be cleaned, and the cleaning cloth is configured to wipe off the cleaning liquid that has already been used on the blanket cylinder. , excellent cleaning ability per unit time,
It can be cleaned in a short cleaning time and with a small amount of cleaning cloth, and its structure is simple.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic diagram of an offset printing machine, FIG. 2 is a partially cutaway plan view of a cleaning device, and FIG. 3 is a sectional view taken along the line ■-■ in FIG. be. In the figure, (1) is the ink fountain, (2) is the ink supply roller group, (3) is the plate cylinder, (4) is the blanket cylinder, (5) is the impression cylinder, (6) is the printing paper, and (7) is the Cleaning cloth, (8) and (9
) is the point where the cleaning heavy metal is installed, GO is the nozzle, (11) is the injection pipe, 0 is the cloth supply shaft, (4) is the cloth winding shaft, Q7) and (
2) is the tensioning member, the fence and (c) are the side walls, C37) is the cloth feeding arm; G9 is the air cylinder, (4G is the piston rod, (4a is the control arm, the leaper is the slider, (to) is the control The pin, 55) is the control roller, 67) and the bet is ren m"J,
■ is roller, seasonal is rail, air cylinder, (
goods) is 6 with the piston rod.

Claims (1)

[Scope of Claims] 1. A cleaning cloth stretched between two points so as to be pressed so as to be in surface contact with the outer peripheral surface of an object to be cleaned, such as a blanket cylinder, an impression cylinder, or an ink supply roller, which participates in printing; A cleaning device for a blanket cylinder or the like, comprising means for supplying a cleaning liquid to a cleaning cloth from the back side thereof, the cleaning cloth being fed in a direction opposite to the direction of rotation of the outer periphery of an object to be cleaned. 2. The blanket according to claim 1, wherein the cleaning cloth stretched between two points is pressed against the outer peripheral surface of the object to be cleaned, such as a rotating blanket cylinder, to wipe off the cleaning liquid already used for cleaning on the outer peripheral surface. Cleaning equipment for torsos, etc.