JPH08142316A - Printing machine cleaning equipment - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to prevent the size of the apparatus from increasing and to prevent uneven cleaning and to perform good cleaning. [Structure] 1 is a blanket cylinder, 2 is a pair of opposing sub-frames, 15 is a cloth supply shaft, 17 is a cloth supply shaft 15
It is a cleaning cloth supply roll wound around. 20 is a cloth winding shaft rotatably supported by the subframe 2, 21
Is a cleaning cloth winding roll wound around the shaft 20. The cleaning liquid tank 3 is fixed between the sub-frames 2, and the cleaning liquid tank 3 is filled with the cleaning liquid 18.
The cleaning cloth supply roll 17 is immersed in the container 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for a cylinder such as a blanket cylinder and an impression cylinder of a printing machine and a roller for an inking device and a roller such as a guide roller.

[0002]

2. Description of the Related Art Generally, in a cleaning device of this type, a cleaning liquid is applied to a cloth fed from a supply roll, and then the cleaning liquid is applied to the cylinder through the cloth, and the dirt is wiped off with the cloth. As a method of applying the cleaning liquid to the cloth, a method of spraying the cleaning liquid from a nozzle as disclosed in JP-A-63-37945 or a method disclosed in JP-A-63-80162 is disclosed. There is a method of applying the roller by contacting it with a cloth.

[0003]

However, in the former case, it is difficult to uniformly apply the cleaning liquid in the width direction of the cloth, which causes uneven cleaning. Also,
In the latter case, when the diameter of the roller is small, the rigidity of the entire roller is low, and the roller bends along the roller axial direction. Therefore, it is difficult to apply the cleaning liquid uniformly in the width direction of the cloth, and the roller diameter is reduced. If it is increased, it becomes difficult to rotate the roller only by the frictional force between the cleaning cloth and the roller that is fed out, and another drive system is required, which causes a problem that the device becomes large and a large space is required. Was there.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to prevent an increase in size of the apparatus, prevent uneven cleaning, and perform good cleaning. It is to provide a cleaning device for a printing machine.

[0005]

In order to achieve this object, a cleaning device for a printing machine according to the present invention cleans dirt by bringing a strip-shaped member fed from a supply roll into contact with an outer peripheral surface of a rotary member. In the cleaning device for a printing machine described above, a cleaning liquid tank for immersing the supply roll in the cleaning liquid was provided. Further, the cleaning device for a printing machine according to the present invention is provided with a supply port for supplying the cleaning liquid to the cleaning liquid tank, and a lid member for sealing and opening the supply port. Further, the cleaning device for the printing machine according to the present invention is provided with the squeezing means for making the immersion amount of the cleaning liquid of the belt-shaped body fed from the cleaning liquid tank constant.

[0006]

According to the present invention, the strip-shaped member fed from the supply roll is uniformly moistened with the cleaning liquid in the cleaning liquid tank. Further, according to the present invention, an appropriate amount of the cleaning liquid is supplied from the supply port into the cleaning liquid tank, and the supplied cleaning liquid is prevented from evaporating to the outside of the cleaning liquid tank by the lid member. Further, according to the present invention, the squeezing means constantly supplies the strip-shaped body, in which a constant amount of the cleaning liquid is immersed, to the surface of the rotating body.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a cleaning device for a printing press according to the present invention,
(A) is a cross-sectional view, (b) is a cross-sectional view of the upper side viewed from the Ib side of (a), FIG. 2 shows the structure of the shaft support portion of the cloth supply roll, (a) is a perspective view, (b) ) Is a side view. In these drawings, reference numeral 1 denotes a blanket cylinder as a cylinder that is in contact with an impression cylinder (not shown), which is rotatably supported by a pair of opposing frames (not shown), and is rotated by a rotational drive from a prime mover during printing and cleaning. It is supposed to do. Two
Is a pair of opposing sub-frames, which are supported between the frames so that they can be brought into and out of contact with the blanket cylinder 1, are separated during printing, and are described later as shown in FIG. The cleaning cloth 22 to be contacted comes close to the outer peripheral surface of the blanket cylinder 1 so as to face it.

Reference numeral 3 denotes a cleaning liquid tank having a substantially U-shaped cross section, which is a feature of the present invention. Both side surface portions are fixed to the upper portion of the subframe 2 so as to extend between the subframes 2. The cleaning liquid tank 3 has a top opening to form a supply port 4 for supplying the cleaning liquid, a drain hole 5 for discharging the cleaning liquid is formed on the bottom surface, and a cylindrical shape is formed on one of the inner side surfaces. The bearing cylinder portion 6 is provided in a protruding manner, and the bearing portion 7 is provided on the other side. The bearing portion 7 is provided on the inner surface of the cleaning liquid tank 3 so as to project, and is formed in a semi-cylindrical shape by notching the tip-side upper portion 8a, and the flange portion 8b is formed at the tip.
And a ring-shaped holder cover 9 that is inserted into the bearing tubular portion 8 and is movable back and forth in the B-C direction. The coil spring 10 is fitted between the inner surface of the cleaning liquid tank 3 and the holder cover 9. Thus, the holder cover 9 always advances in the B direction and is locked to the collar portion 8b to cover the notch portion 8a.

Reference numeral 11 denotes a lid which is rotatably supported at the rear upper edge of the cleaning liquid tank 3 by a well-known hinge so that the supply port 4 can be opened and closed.
The supply port 4 is closed. Reference numeral 12 is a felt formed on the lower surface of the tip of the lid 11 by an elastic member extending and fixed in the longitudinal direction of the cleaning liquid tank 3. Reference numeral 13 denotes a roller rotatably supported on the front upper edge of the cleaning liquid tank 3 and extending in the longitudinal direction of the cleaning liquid tank 3. When the supply port 4 is closed by the lid 11, the felt 12 presses the roller 13 and the felt 12
The supply port 4 is sealed by the elastic deformation of. Reference numeral 14 is a drain hose communicating with the drain hole 5, and a conventionally known cock (not shown) for opening and closing the drain hole 5
It has.

Numeral 15 is a cloth supply shaft having shaft cores 16 projectingly formed on both side surfaces thereof, and a cleaning cloth 22 as a cleaning web is wound to form a cleaning cloth supply roll 17. 1
Reference numeral 8 denotes a cleaning liquid filled in the cleaning liquid tank 3, and 19 denotes a cleaning cloth 22 attached to one corner of the lower portion of the subframe 2 so as to extend between the subframes 2 for pressing the cleaning cloth 22 on the blanket cylinder 1. It is a pressing material. Reference numeral 20 denotes a cloth winding shaft rotatably supported between the sub-frames 2, which is driven to rotate clockwise in the drawing by a conventionally known winding means including an air cylinder, a ratchet wheel, a one-way clutch and the like.

The cleaning cloth supply roll 17 is housed in the cleaning liquid tank 3 through the opening 4 and one shaft core 16 of the cloth supply shaft 15 is inserted into the bearing portion 6, and then the holder cover of the bearing portion 7 is inserted. By retracting 9 in the C direction against the spring force of the coil spring 10, moving it from the position shown by the solid line to the position shown by the chain double-dashed line, and opening the notch 8a,
The other shaft core 12 is placed in the bearing tubular portion 8 from the cutout portion 8a, and the holder cover 9 is advanced in the B direction by the spring force of the coil spring 10, whereby the cloth supply shaft 11 is moved to the bearing tubular portion 6 and the bearing. The part 7 is rotatably supported. At this time, the cleaning cloth supply roll 17 accommodated in the cleaning liquid tank 3 is lightweight because the cleaning cloth 22 is not moistened with the cleaning cloth 22, and the work of supporting the cloth supply shaft 15 on the bearing portion 6 is facilitated. Since it can be performed, workability is improved. In addition, since the bearing portion 6 is provided, the cleaning cloth supply roll 17 can be supported and rotated in a stable state, as compared with the case where the bearing portion is not provided and the cleaning liquid tank 3 is simply loosely accommodated. The cleaning cloth 22 can be easily pulled out, and the cleaning cloth 22 can be pulled out without wrinkling.
After being supported in this way, one end of the cleaning cloth 22 is pulled out from the cleaning cloth supply roll 17 from the cleaning liquid tank 3 and the pressing member 19 is pressed.
The cleaning cloth take-up roll 21 is constructed by tensioning the cloth through the cloth and winding the cloth by the cloth take-up shaft 20.

The cleaning liquid 18 is supplied into the cleaning liquid tank 3 through the opening 4 opened by opening the lid 11, and when the supply is completed,
The lid 11 is closed. When the lid 11 is closed, the lid 11 seals the supply port 4 and the felt 12 closes the roller 1.
3 is elastically deformed by pressing, and the delivery port for delivering the cleaning cloth 22 formed by the felt 12 and the roller 13 from the cleaning liquid tank 3 is closed, so that the cleaning liquid tank 3 is closed and the cleaning liquid 18 having high volatility Evaporation outside the cleaning liquid tank 3 is prevented. When the cleaning liquid 18 has sufficiently penetrated over the entire cleaning cloth supply roll 17, the excess cleaning liquid 18 is discharged from the drain hose 14.

After the above preparation, the subframe 2
Is moved to the blanket cylinder 1 side, the cleaning cloth 22 is brought into contact with the outer peripheral surface of the blanket cylinder 1, and the blanket cylinder 1 is rotated at a lower speed than during printing,
At the same time, the cloth winding shaft 20 is driven to rotate clockwise in the drawing by a winding means (not shown), and the cleaning cloth 22 is passed from the cleaning cloth supply roll 17 between the roller 13 and the felt 12 and fed out in the A direction. . Cleaning cloth 2
2, the cleaning liquid 18 is uniformly dipped throughout, and when passing between the roller 13 and the felt 12,
Since the excess cleaning liquid is squeezed out, the cleaning cloth 22
An appropriate amount of cleaning liquid necessary for cleaning is constantly moistened. Since the outer peripheral surface of the blanket cylinder 1 to be washed with the washing cloth 22 uniformly moistened with an appropriate amount of the wash liquid as described above does not cause dripping and does not cause a shortage of the wash liquid, the blanket cylinder The blanket covering the surface of No. 1 does not peel off, which is so-called peeling.

When the cleaning liquid 22 is insufficient during the cleaning operation, the lid 11 is opened and the cleaning liquid 18 is replenished at any time so that the cleaning cloth supply roll 17 is always moistened with a constant amount of the cleaning liquid. it can. In addition, the cleaning cloth supply roll 17 can be replaced by opening the lid 11. Further, when the cleaning water is required in addition to the cleaning liquid 18, the cleaning liquid 1 is drained from the drain hose 14.
After discharging 8, the cleaning water is supplied from the supply unit 4 into the cleaning liquid tank 3. Further, when the cleaning liquid is insufficient from the beginning even when the cleaning cloth supply roll 17 is used, the cleaning liquid 18 is replenished in the cleaning liquid tank 3 and the cleaning cloth supply roll 17 is uniformly moistened again. Can be returned. Further, when the cleaning cloth supply roll 17 in which the cleaning liquid is wet from the beginning is used, and when water is further used, the cleaning cloth supply roll 17 may be moistened by accumulating water in the cleaning liquid tank 3. it can.

FIG. 3 is a sectional view showing a second embodiment of the present invention. In the second embodiment, the supply port 4 of the cleaning liquid tank 3 is used.
Has no lid for closing it, and is always open. In such a configuration, when the cleaning operation is performed for a long time or for a long time, the cleaning liquid 18 may evaporate from the open supply port 4 and the cleaning liquid 18 may run short. By replenishing the cleaning liquid 18 from above, the cleaning cloth 22 can be always moistened with an appropriate amount of the cleaning liquid 18 necessary for cleaning. Further, as a method of immersing the cleaning cloth supply roll 17 in the cleaning liquid 18, as shown in FIG. 3, even if the entire cleaning cloth supply roll 17 is not immersed in the cleaning liquid 18, the cleaning liquid 18 permeates the immersed part. After that, it goes without saying that the cleaning cloth supply roll 17 may be rotated so that the cleaning liquid 18 is sequentially permeated throughout.

FIG. 4 is a sectional view showing a third embodiment of the present invention. In the figure, reference numeral 24 denotes a pair of studs which are provided above the subframe 2 and between the subframes 2 so as to be opposed to each other. A felt 25 extends between the subframes 2 in each of the studs 24 and 24. They are fixed so that they are present and in contact with each other. The cleaning liquid tank 3 is extended by 1 on the right side in the drawing so as to correspond to the lower position of these studs 24 to form an extended portion 3a.

In such a structure, the cleaning cloth 22 fed from the cleaning cloth supply roll 17 is stretched between the felts 25 which are in contact with each other and the pressing member 19 and is wound around the cloth winding shaft 20. The cleaning cloth 22 moistened with the cleaning liquid 18 is squeezed with excess cleaning liquid between the felts 25, and the squeezed excess cleaning liquid drops downward, that is, to the extending portion 3a in the direction D in the drawing, and the cleaning liquid tank 3 Re-contained in.

FIG. 5 is a sectional view showing a fourth embodiment of the present invention. In the fourth embodiment, instead of the felt 25 of the third embodiment described above, a roller 26 extending between a pair of sub-frames 2 is arranged so as to be in contact with a shaft 27 extending across the sub-frames 2. It is rotatably supported on. With this structure, the roller 26 can be used as the cleaning cloth 22 as in the felt 25 of the third embodiment.
Squeeze the excess cleaning liquid, and always get an appropriate amount of cleaning liquid.
Keep it wet.

In this embodiment, the blanket cylinder 1 is given as an example of the rotary member to be cleaned with the cleaning cloth 22, but the present invention is not limited to this and can be applied to other cylinders such as an impression cylinder and a transfer cylinder. ,
Further, it goes without saying that the invention can also be applied to rollers such as rollers and guide rollers of an inking device.

[0020]

As described above, according to the present invention, in the cleaning device of the printing machine, the strip-shaped member fed from the supply roll is brought into contact with the outer peripheral surface of the rotating member to wash the dirt.
By providing the cleaning liquid tank for immersing the supply roll in the cleaning liquid, the cleaning liquid can be uniformly immersed in the entire strip, so that uneven cleaning can be prevented. Further, since the roller for applying the cleaning liquid to the belt and the drive source for driving the roller are not required, the apparatus can be downsized. Further, since the supply roll in which the cleaning liquid to be supplied to the cleaning liquid tank is not immersed is lightweight, the workability for attaching the cleaning liquid tank to the cleaning liquid tank is improved.

Further, according to the present invention, by providing the cleaning liquid tank with the supply port for supplying the cleaning liquid and by providing the lid member for sealing and opening the supply port, the cleaning liquid tank can be sealed from the supply port. The cleaning liquid is prevented from evaporating and the cleaning liquid is held in an appropriate amount. Further, if the cleaning liquid evaporates and decreases, the cleaning liquid can be replenished from the supply port, so that the cleaning liquid can always be maintained in an appropriate amount.

Further, according to the present invention, by providing the squeezing means for making the immersion amount of the cleaning liquid of the strip-shaped member fed from the cleaning liquid tank constant, the cleaning liquid immersed in the strip-shaped member contacting the rotating body is always constant. Therefore, it is possible to prevent uneven cleaning, and it is possible to prevent excess cleaning liquid from splashing during cleaning, so that cleaning can be performed in a good environmental condition.

[Brief description of drawings]

FIG. 1 shows a cleaning device for a printing press according to the present invention,
(A) is sectional drawing, (b) is sectional drawing of the upper side seen from the Ib side in (a).

FIG. 2 shows a structure of a shaft support portion of a cloth supply roll in a cleaning device for a printing press according to the present invention, (a) is a perspective view,
(B) is a side view.

FIG. 3 is a cross-sectional view showing a second embodiment of the cleaning device for a printing press according to the present invention.

FIG. 4 is a sectional view showing a third embodiment of the cleaning device for a printing press according to the present invention.

FIG. 5 is a cross-sectional view showing a fourth embodiment of a cleaning device for a printing press according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rubber cylinder, 3 ... Cleaning liquid tank, 3a ... Extension part, 4 ... Supply port, 6,8 ... Bearing cylinder part, 7 ... Bearing part, 9 ... Holder cover, 11 ... Lid, 25 ... Felt, 12 ... Felt 1
3, 26 ... Roller, 17 ... Cleaning cloth supply roll, 21 ... Cleaning cloth winding roll, 22 ... Cleaning cloth

Claims (3)

[Claims] 1. A belt-shaped body fed from a supply roll,
A cleaning device for a printing machine, which cleans dirt by contacting an outer peripheral surface of a rotating body, wherein a cleaning liquid tank for immersing the supply roll in a cleaning liquid is provided. 2. The cleaning device for a printing machine according to claim 1, wherein the cleaning liquid tank is provided with a supply port for supplying the cleaning liquid, and a lid member for sealing and opening the supply port is provided. Cleaning machine for printing machines. 3. The cleaning device for a printing machine according to claim 1, further comprising a squeezing means for making a constant immersion amount of the cleaning liquid for the strip-shaped body fed from the cleaning liquid tank.