JPH0664879U - Printing cylinder / roller cleaning device for printing machines - Google Patents

Abstract

(57) [Abstract] [Purpose] To make it possible to easily and highly accurately adjust the contact pressure of the cleaning web that follows the movement of the printing cylinder and rollers due to changes in paper thickness. [Structure] A cleaning pad 12 is provided which guides the anti-cleaning surface of a cleaning web 6 which is slidably contacted with the circumferential surface of the blanket cylinder 1 and which guides the anti-cleaning surface. Supporting the cleaning pad 12 and the blanket cylinder 1
The swingable lever 9 for supporting the plurality of rollers 13 that are in contact with the peripheral surface of the bearer 1a is provided. An air cylinder 7 is provided which pivotally supports the swinging fulcrum of the lever 9 to move back and forth to press the cleaning web 6 against the peripheral surface of the blanket cylinder 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a printing cylinder / roller cleaning device for cleaning printing cylinders such as a blanket cylinder, an impression cylinder, and a transfer cylinder, and the peripheral surfaces of rollers such as a wearing roller and a swing roller in various printing machines.

[0002]

[Prior art]

 Various printing machines such as an offset printing machine and an intaglio printing machine are equipped with printing cylinders such as a plate cylinder, a blanket cylinder, an impression cylinder, and a transfer cylinder, and rollers such as a dressing roller and a swinging roller. Since foreign matter such as ink dust and paper dust adheres to the peripheral surface of the machine during printing, it deteriorates the quality of the printed matter.Therefore, the printing machine is equipped with a printing cylinder and roller cleaning device to remove these foreign matter. ing.

In this type of cleaning device, both ends thereof are rotatably supported by bearings on the machine base frame side in close proximity to the peripheral surface of a printing cylinder / roller, for example, a blanket cylinder, which extends in the axial direction. A supply roller and a take-up roller are provided, and a strip-shaped cleaning web (hereinafter simply referred to as a web) made of a non-woven fabric or the like is wound on the supply roller in a separate process.

The web is attached to the peripheral surface of the blanket cylinder by a guide roller, a pad, etc. provided between the supply roller and the take-up roller by rotating the take-up roller by a driving device. After that, it is wound up by a winding roller.

With such a configuration, when the blanket cylinder is rotated and the winding roller is intermittently rotated, the web runs intermittently, so that the foreign matter adhering to the peripheral surface of the blanket cylinder is removed. The web is wiped off and transferred to the web, and the web is taken up by a take-up roller with foreign matter attached.

[0006]

However, in such a conventional cleaning device, there is a problem in adjusting the contact pressure between the web and the peripheral surface of the blanket cylinder when the thickness of the printing paper is changed. That is, when the thickness of the printing paper is changed, the contact pressure of the web on the peripheral surface of the blanket cylinder changes due to the movement of the blanket cylinder corresponding to the paper thickness, and it is necessary to adjust this contact pressure. However, there is a problem in that the conventional cleaning device cannot adjust the contact pressure, so that a sufficient cleaning function cannot be expected.

Further, as a correction device for adjusting this contact pressure, a device for moving a guide member for abutting the web on the peripheral surface of the blanket cylinder, and a device frame serving as a reference on the machine mounting side are moved. Various types of correction devices have been proposed, but all of them have the problems of poor operability because they must be manually moved using a tool, and it is difficult to make highly accurate adjustments.

The present invention has been made in view of the above points, and it is possible to easily and highly accurately adjust the contact pressure of the cleaning web that follows the movement of the printing cylinder / roller to be cleaned by changing the paper thickness. It is an object of the present invention to provide a printing cylinder cleaning device for a printing machine.

[0009]

[Means for Solving the Problems]

 In order to achieve such an object, according to the present invention, a cleaning cylinder running on a printing cylinder / roller cleaning device of a printing machine, with the cleaning surface sliding on the peripheral surface of the printing cylinder / roller, and the cleaning web A cleaning member, a guide member for guiding the anti-cleaning surface by sliding contact, a swingable supporting member for supporting the guide member and a plurality of rollers that are in contact with the circumferential surface of the printing cylinder / roller, and the cleaning web. The printing cylinder and the roller are configured to be pressed against the peripheral surface of the roller.

[0010]

[Action]

 For example, when the printing paper is changed from thick paper to thin paper and a printing cylinder, for example, a blanket cylinder, is moved in a direction away from the cleaning web, the pressing means is advanced to advance the supporting member pivotally supported on the swing base, The guide member supported by the member moves forward, and the cleaning web with which the anti-cleaning surface is brought into sliding contact is pressed against the peripheral surface of the blanket cylinder and corresponds to thin paper. When the cleaning web is run in this state, foreign matter on the peripheral surface of the rubber cylinder is transferred to the cleaning web and carried away.

When the supporting member advances, one of the plurality of rollers supported by the supporting member abuts on the peripheral surface of the blanket cylinder, and then the other roller abuts on the peripheral surface of the blanket cylinder. Since the support member swings until it comes into contact, the left and right contact pressure between the peripheral surface of the blanket cylinder and the pressing member becomes constant regardless of the movement of the peripheral surface of the blanket cylinder due to the change in paper thickness.

[0012]

【Example】

 1 to 4 show an example in which a printing cylinder / roller cleaning device of a printing machine according to the present invention is applied to a blanket cylinder, and FIG. 1 shows a cleaning web and a guide member in a cleaning state for easy understanding of the configuration. FIG. 2 is a side view of the printing cylinder / roller cleaning device in a non-pressed state, FIG. 2 is a perspective view of the printing cylinder / roller cleaning device, and FIG. 3 is a state in which the cleaning web has started to contact the circumferential surface of the printing cylinder / roller. Fig. 4 is a side view of the printing cylinder / roller cleaning device shown in Fig. 4. Fig. 4 is a side view of the printing cylinder / roller cleaning device shown in a state where the pressing member is advanced to the forward limit and the cleaning web is pressed against the peripheral surface of the printing cylinder / roller. is there.

In the figure, the blanket cylinder 1 has both end shafts pivotally supported on the left and right machine frame (not shown), and the left and right unit frames 3 provided in the cleaning unit indicated by reference numeral 2 are the left and right unit frames. It is fixed to the machine frame. At the upper end and the lower end of each of the left and right unit frames 3, a core material 4a and a cleaning web 6 made of, for example, a non-woven cloth wound around the core material 4a in the previous step (hereinafter simply referred to as web 6) are provided. Both ends of a supply roller 4 composed of a core material 5a and a winding roller 5 composed of a core material 5a and a web 6 wound around the core material 5a are rotatably and detachably supported.

The take-up roller 5 is provided with a fixed-size feed device (not shown) in which an actuator such as an air cylinder and a one-way clutch on the take-up roller are connected by a link mechanism. The winding roller is intermittently rotated in one direction via a one-way clutch by advancing and retracting the web 6 in a predetermined cycle, and the web 6 is wound at a fixed size.

An air cylinder 7 as a pressing means is fixed to the central portion of each of the left and right unit frames 3, and the working end portion of the piston rod 8 thereof is formed in a dogleg shape in a side view. A pair of left and right levers 9 serving as support members are rotatably pivoted by pins 10, and the left and right levers 9 are connected at their upper and lower ends by pipes 11.

Reference numeral 12 denotes a cleaning pad as a guide member formed in a rectangular shape by a plate material and having arcuate bent portions at both upper and lower ends engaged with the pipe 11, and the surface of the cleaning pad 12 is While the cleaning surface is in sliding contact with the peripheral surface of the blanket cylinder 1, the anti-cleaning surface of the web 6 facing from the supply roller 4 to the winding roller 5 is slidably guided and the piston rod 8 is pneumatically driven. When the web 6 is moved forward, the web 6 is pressed against the peripheral surface of the blanket cylinder 1 via the cleaning pad 12 to wipe off foreign matter on the peripheral surface.

The upper and lower pipes 11 project from the lever 9 and are rotatably supported by a total of four rollers 13 in the vertical and horizontal directions. Since the bearer 1a is formed and the four rollers 13 contact the bearer 1a, the forward limit of the piston rod 8 is restricted and the web 6 is cleaned by the four rollers 13. It is configured to be pressed against the blanket surface of the blanket cylinder 1 via 12. The roller 13 does not necessarily have to be brought into contact with the bearer 1a, but may be brought into contact with the peripheral surface of the body. Of course, in the case of a roller without a bearer, the roller is brought into contact with the peripheral surface of the roller body.

FIG. 3 shows a state in which the piston rod 8 has started to move forward and the web 6 has begun to come into contact with the peripheral surface of the blanket cylinder 1. The roller 13 has not yet come into contact with the blanket cylinder 1 and the web 6 The cleaning portion of the cleaning pad 12 and the cleaning pad 12 are linearly attached to the bearer 1a. 4 shows a state in which the piston rod 8 has advanced to the forward limit and stopped from the state shown in FIG. 3, the roller 13 is in contact with the bearer 1a, and the web 6 and the cleaning pad 12 are arcuate. And is pressed against the peripheral surface of the blanket cylinder 1.

The operation of the cleaning apparatus configured as above will be described. In the previous step, the supply roller 4 on which the web 6 is fully wound is pivotally supported on the left and right unit frames 3, and the empty take-up roller 5 having only the core material 5a is pivotally supported on the left and right unit frames 3.

After this, the web 6 is unwound from the supply roller 4 with the piston rod 8 of the air cylinder 7 retracted, and the web 6 is passed between the cleaning pad 12 and the blanket surface of the blanket cylinder 1. It is passed and guided to the winding roller 5 and fixed.

After the preparation as described above, the blanket cylinder 1 is rotated in the direction shown by the arrow in FIG. 1, and as shown in FIG. 4, the piston of the air cylinder 7 is pushed until the roller 13 contacts the bearer 1a. When the rod 8 is moved forward to press the web 6 against the blanket surface of the blanket cylinder 1 and the take-up roller 5 is intermittently rotated by a constant-size feeding device (not shown), ink residue adhered to the blanket surface of the blanket cylinder 1, etc. The foreign matter is wiped off by the web 6, and the web 6 is taken up by the take-up roller 5 with the foreign matter attached.

After the printing work is performed in this way, for example, when the printing paper is changed from thick paper to thin paper and the blanket cylinder 1 moves in the direction away from the running surface of the web 6, the air cylinder 7 When the piston rod 8 is moved forward by air pressure, the lever 9 pivotally supported by the swinging fulcrum portion at the working end of the piston rod 8 moves forward, and the four upper, lower, left and right rollers 13 sequentially contact the bearer 1a. While the left and right levers 9 are swung, the four rollers 13 push the four corners of the cleaning pad 12 with an averaged force, so that the web 6 is moved by the cleaning pad 12 to the blanket surface of the blanket cylinder 1 in accordance with the change in the paper thickness. The contact pressure is kept constant regardless of whether the paper is thick or thin.

5 and 6 show another embodiment of the present invention. FIG. 5 is a side view of the printing cylinder / roller cleaning device shown in FIG. 1, and FIG. 6 is the printing shown in FIG. FIG. 3 is a perspective view of a body / roller cleaning device. In these figures, members having the same configurations as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. In this embodiment, the air cylinder 7 that was fixed to the unit frame 3 in the above embodiment is fixed to the machine frame 14, and the unit frame 3 has a notch 3a for engaging the air cylinder 7. Has been formed. The operation is the same as in the above embodiment.

Further, in each of the above-mentioned embodiments, the unit frame 3 is fixed to the machine frame 14, and the lever 9 is pivotally supported by the pin 10 on the piston rod 8 of the air cylinder 7 fixed to any of these frames 3 and 4. However, the present invention is not limited to this, and the unit frame 3 is provided so as to be movable with respect to the machine frame 14 and the unit frame 3 that supports the lever 9 via the pin 10 is used as the machine frame. You may make it advance / retreat by the drive devices, such as the air cylinder 7 supported by the frame 14 side.

Further, the cleaning pad 12 in each of the above embodiments does not necessarily have to be provided, and the pipe 7 in the drawing may be used as a guide member to guide the web 6 by sliding contact with the web 6.

Further, in each of the above-described embodiments, the present invention is applied to the blanket cylinder, but the present invention is not limited to this. A printing cylinder such as a plate cylinder, an impression cylinder, and a transfer cylinder, a deposition roller, and a swing roller. It may be carried out on such rollers.

[0027]

[Effect of device]

 As is apparent from the above description, according to the present invention, a cleaning web for running a printing cylinder / roller cleaning device of a printing machine with the cleaning surface slidingly contacting the peripheral surface of the printing cylinder / roller, and the cleaning web. A guide member that slides and guides the anti-cleaning surface of the roller, and a swingable support member that supports the guide member and supports a plurality of rollers that are in contact with the circumferential surface of the printing cylinder and the roller. When the thickness of the printing paper is changed by configuring the web with the pressing means for pressing the peripheral surface of the printing cylinder / roller, when the supporting member is moved forward and backward by the pressing means, it is supported by the supporting member. After one of the plurality of rollers comes into contact with the peripheral surface of the blanket cylinder, the supporting member swings until the other rollers come into contact with the peripheral surface of the blanket cylinder. The contact pressure on the left and right with the pressing member is related to the movement of the peripheral surface of the blanket cylinder due to the change of paper thickness. Not become constant, yet a simple operation of only advancing and retracting the pressing means without using a tool, than the contact pressure of the cleaning web can be kept constant, thus improving the operability and cleaning function. Further, a constant contact pressure is always obtained without being influenced by the assembly accuracy, and workability is improved.

[Brief description of drawings]

FIG. 1 is a side view of a printing cylinder / roller cleaning device showing a cleaning web and a guide member in a non-pressed state in a cleaning state for easy understanding of the configuration.

FIG. 2 is a perspective view of a printing cylinder / roller cleaning device.

FIG. 3 is a side view of the printing cylinder / roller cleaning device in a state in which the cleaning web has started to contact the peripheral surface of the printing cylinder / roller.

FIG. 4 is a side view of the printing cylinder / roller cleaning device in which the cleaning web is pressed against the peripheral surface of the printing cylinder / roller.

FIG. 5 is a side view of a printing cylinder / roller cleaning device according to another embodiment of the present invention.

FIG. 6 is a perspective view of a printing cylinder / roller cleaning device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Rubber blanket 6 Cleaning web 7 Air cylinder 8 Piston rod 9 Lever 10 Pin 11 Pipe 12 Cleaning pad 13 Roller

Claims (1)

[Scope of utility model registration request] 1. A cleaning web that travels with a cleaning surface in sliding contact with the peripheral surface of a printing cylinder / roller, a guide member that slides and guides an anti-cleaning surface of this cleaning web, and a guide member that supports this guide member. Further, a swingable support member that supports a plurality of rollers that are in contact with the peripheral surface of the printing cylinder / roller, and a pressing unit that presses the cleaning web against the peripheral surface of the printing cylinder / roller are provided. Characteristic printing cylinder / roller cleaning device for printing machines.