JPS62149449A - Guide roller cleaning and its device for rotary press - Google Patents

Abstract

PURPOSE:To improve working efficiency and liberate a worker from a complicated work at high elevation by slightly differentiating the rotary circumferential speed of a guide roller arranged in a running paths for paper from the running speed of paper and wiping off ink piled on the guide roller using a slip caused by the speed difference. CONSTITUTION:A control 62, upon receipt of an actuation signal from a signal means 61, actuates a drive 20 as a drive means of a guide roller 12 in such a way that the guide roller 12 runs at a slightly different circumferential speed from the running speed of a paper 11, i.e. slightly faster or slower. Then a sliding drive means 44 is driven through an electromagnetic valve 46 so that a mover 43 attached to a shaft 12a of the guide roller 12 may slide. After this, a clutch 40 will be engaged to drive the guide roller 12 and then is caused to slip to such an degree that the paper 11 is not broken between the circumferential surface of the guide roller 12 and the running paper 11. Thus the circumferential surface of the guide roller 12 is cleaned by the slipping action of the paper 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applied to a rotary printing press using web paper, which is disposed in the running path of paper to support the paper, change the running direction of the paper, and prevent lateral deviation of the paper. The present invention relates to wiping and cleaning of guide rollers that prevent paper wrinkles and assist the running of the paper, and particularly relates to a method and device for wiping guide rollers piled with undried ink immediately after printing.

2. Description of the Related Art Piling of ink on the circumferential surface of the guide roller in the above-mentioned rotary printing press is a major problem in the printing process. Efforts were made to prevent ink blistering, for example,
This is well known as disclosed in Japanese Utility Model Publication No. 22312, Japanese Utility Model Publication No. 39-26949, and the like.

That is, the roller circumferential surface shown in Japanese Utility Model Publication No. 36-22312 is made by applying porous hard chromium plating to the outer circumferential surface of the α10 roller to create a roller circumferential surface with extremely irregular and fine irregularities. In addition to reducing the area of the contact area with the running paper on the outer circumferential surface of the roller, by utilizing the relatively high insensitivity inherent in IC + chrome, conditions are created in which it is difficult for undried ink on the printing surface to transfer to the circumferential surface of the roller. This is an attempt to prevent the above-mentioned piling.

In addition, the example shown in Japanese Utility Model Publication No. 39-26946 is as follows: An outer cylinder is rotatably mounted with a plurality of small holes drilled at appropriate intervals on the entire outer circumference of the roller via a rotating bearing.
The open end of the hollow shaft mentioned above is read as a compressed air source.
It passes through a small hole in the outer cylinder and is ejected to the outside of the roller, causing the running charge paper to float above the roller circumferential surface, thereby reducing the chances of the printed surface coming into contact with the roller circumferential surface, and +C+ running charge being ejected from the roller circumferential surface. When it comes into contact with the roller, the outer cylinder rotates at the same circumferential speed along with the running paper (conditions that can minimize the chance of undried ink on the printing surface being transferred to the roller circumferential surface). The idea was to prevent the above-mentioned piling by aligning the numbers.

Problems to be Solved by the Invention However, with the recent increase in printing speed and print volume, the process of preventing ink piles in the conventionally known technology described above, that is, the guide roller aspect, the running paper, and the T-line. However, a single set designed to reduce the contact area or opportunity of contact with the printing surface was not sufficiently effective, and ink piling occurred on the peripheral surface of the roller. As described in , it is necessary to wipe the piled ink, and this is done exclusively by hand, resulting in inefficiency that requires a large amount of man-hours, and because the guide rollers are usually installed at a high place. This has led to major problems in terms of both work safety and safety.

Means for Solving the Problems The present invention has been developed in view of the above-mentioned problems, and the cleaning of the guide rollers piled with ink can be completed in a short time without relying on manual labor, thereby improving work efficiency. Provided is a guide roller wiping method and device for a rotary printing press, which can be improved, relieve workers from complicated work at high places, and have a great effect on work safety. In this method, the peripheral speed of rotation of a guide roller disposed on the running path of the paper is slightly different from the running speed of the paper, and the T slip caused by this speed difference causes the guide roller to This is a method that wipes away the piled ink on the surface.
Furthermore, the structure of the apparatus for carrying out this method is such that a rotational speed control device is connected to the detail of the guide roller so that the rotational peripheral speed of the guide roller is controlled to be slightly different from the running speed of the paper.

The guide roller is rotated at a circumferential speed that is different from the running speed of the paper, and slippage occurs between the running paper and the circumferential surface of the guide roller, and this slippage causes piles to form on the surface of the guide roller. The ink is wiped clean.

Example Embodiments of the present invention will be described based on the drawings.

When a newspaper is printed using a rotary printing press, for example, an offset rotary printing press, a plurality of printing units 10, 10. . . . and a single folding unit 16 constitute one printing set. Normally,
The paper 11 issued from a roll of paper attached to a paper feed section (not shown) provided for each printing section 10, 10, . Part 10
Blanket torso! Oα, 10α and drag roller 1
3 and guided by guide rollers +2.12.・・・
The running direction is changed while being supported by the drag roller 13, and cut in the longitudinal direction by a slitter 13α attached to the drag roller 13, and the cut -1 is moved to the other side by a turning parr 14 provided on the downstream side. are positioned above and below the folded portion 16, and are pulled by the drag roller 15 immediately upstream of the folding portion 16 to guide rollers +2.12. The folding portion 16 is supported by... and the traveling direction is changed.
will be introduced in

The present invention is effective not only for the guide roller at the most ink-piling site downstream of the printing section 10 in the rotary printing press, but also for all other guide rollers.
One example of the groove formation is shown in FIG.

T, that is, both shaft portions 1 extending at both ends of the guide roller 12
2α and i2m are supported on a machine base (not shown) via shelf supports 17.17, and both shafts 12α
, 12E, the pulley 18 is fixed to -1. In addition, the above-mentioned machine base is provided with a drive section 20 in which a pulley 18α is fixed to the output shaft 20a, and an endless belt 19 is passed through the above-mentioned two locks IJ1g and I8α, and the above-mentioned two pulleys l
LI&'', an endless belt 19°, and a guide roller drive means opening consisting of a drive section 20, and a clarification is provided in a part of the drive means.When the clutch 40 is provided on the driven side boob 918, for example, the second As shown in the figure, the boo 918 is attached to the shaft part tzg of the guide roller 12 via a bearing so that it can rotate freely, and the clutch disc 41 is fixed to the - side of the boo, and the other clutch disc 42 is mounted opposite to this. A fixed movable member 43 is provided on the shaft portion 12α of the guide roller 12 so as to be slidable only in the axial direction of the shaft portion 12a, and a sliding wX drive means 4 is provided for slidingly driving the movable member 43. , may be fixed to a machine base (not shown) via a bracket 45.If necessary, as shown in FIG. Supply cleaning liquid to the range of T
A cleaning liquid supply means 508 is provided.

Next, the operation in the above configuration, T, that is, the guide roller 1
The wiping operation in step 2 will be explained with reference to the T operation system diagram shown in FIG.

After printing is completed, the signal means 61 sends an activation signal to the wiping device control section 62. The control unit 62 is constantly sent the running speed data of the paper 11 detected by the circumferential speed detection means 63 provided on the drag rollers 13 and 15, which are the running power units for the paper 11, and receives the above-mentioned activation signal. control unit 6
2, the driving unit 20, which is the driving means for the guide roller 12, is set so that the circumferential speed of the guide roller 12 is slightly different from the running speed of the paper 11, that is, slightly faster or slower. Activate it. At the same time, in order to slide the movable member 43 provided on the shaft portion 12α of the guide roller 12, the sliding driving means 44 is driven via, for example, an electromagnetic valve 46, and the clutch 4o is engaged. The paper 11 is driven and travels with the circumferential surface of the guide roller 12.
Let the material H111 slip between the two to the extent that it does not break,
Due to the slip, the circumferential surface of the guide roller 12 is wiped with the paper 1.

Next, the state of the wiping is checked and a stop signal is sent as appropriate, and the control unit 6
The drive unit 20 is stopped via the drive unit 20 and the guide roller 2 is placed in a free rotation state by separating the clarification. good.

In addition, when the cleaning liquid supply means 50 is provided near the guide roller 12, an activation signal may be sent from the control section 62 to supply the cleaning liquid in accordance with the wiping process. The cleaning liquid may be supplied as appropriate.

Further, the cleaning liquid may be supplied directly to the circumferential surface of the guide roller 12, or may be supplied to the paper 11 running near the guide roller 12 on the upstream side.

In FIGS. 1 and 4, it is shown that one drive unit 20 rotates the guide roller 12 of 1 g, but the endless bell) 198. [9] If the mechanism is also passed through a pulley provided on the shaft portion of another guide roller (not shown), it is possible to configure the driving means 30 for rotationally driving a plurality of guide rollers T by one driving section 20. Further, in this embodiment, the drive unit 20
Although shown as an independent drive body, it may be a drive body that obtains power from a drive unit of a rotary printing press and outputs T. In this case, the drag roller 1 which is the driving force for the paper 11
3.15 When power is obtained from the drive unit of the rotary printing press, the circumferential speed detection means 63 shown in FIG.
3.15, the gear ratio etc. may be set so as to be different from the running speed of the paper 11 being pulled by the paper 11.

In FIG. 4, the wiping operation is shown assuming the case after printing is completed, and the above explanation may also be based on this. The guide roller 12 can be wiped clean. When wiping the guide roller 12 at the paper splicing section, the wiping device control section 62 uses a paper splicing signal from a paper feeding section (not shown) as a wiping device activation signal.
A counter or a timer detects the timing when the waste paper passes the position of the cleaning guide roller 12 to the right with a counter or a timer, and sends a signal to join and separate the paper joint, and starts the drive unit 20. All you have to do is issue a stop signal.

Note that the structure of the clutch 40 does not necessarily have to be the structure shown in FIGS. 1 and 2, that is, the structure provided on the shaft portion 12α of the guide roller 12 separately from the drive portion 20.
As shown in FIG. 6, a clutch 40α may be provided on the output shaft 20a of the drive unit 20 together with the drive-side pulley +ga.

Further, in the above embodiment, as a means for making the circumferential speed of one rotation of the guide roller 12 different from the running speed of the paper 11, the shaft portion 12α of the guide roller 12 is set to a driving speed different from the running speed of the paper 11 via the clutches 40, 40α. Although an example in which the guide roller 12 is connected to the drive unit 20 is shown, as a means for making the circumferential speed of one rotation of the guide roller 12 different from the running speed of the paper 11, the guide roller 12 is supported so as to freely rotate T, and the guide roller 12 is A brake is attached, and by operating this brake, the rotational circumferential speed of the guide roller 12 and the paper]
The running speed of the guide roller 12 may be changed, and as shown in FIG. The guide rollers 12 may be connected to each other, and the drive unit 20 may drive the guide roller 12 so that the circumferential rotational speed of the guide roller 12 rotates (9) at a speed different from the running speed of the paper 11.

Furthermore, it is also effective to combine a mechanical or electromagnetic transmission mechanism with the clutches 40, 40α.
Similar results can be obtained even if a stepwise or stepless speed change function is provided in the combination of -IL I8α and the endless belt.

Effects of the Invention According to the present invention, the cleaning of the guide roller 12 piled with ink can be completed in a short period of time without relying on manual labor. This can greatly improve the safety of the work.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic perspective view showing the main parts of the device of the present invention, FIG. 2 is a schematic sectional view of a clutch provided on the driven side pulley, and FIG. FIG. 4 is a schematic diagram of the installation of the cleaning liquid supply device, FIG. 4 is an operational system diagram of the device of the present invention, FIG. 5 is a schematic front view of a rotary printing press that can be equipped with the wiping device of the present invention, and FIG. 6 is a diagram of the drive side. FIG. 7 is a schematic sectional view of the clutch provided in the pulley portion, and a T perspective view showing another embodiment of the main part. 11 is a paper, 12 is a guide roller, 12α is a shaft portion, 20
is the drive unit, and (shi (stand) is the clutch.

Claims (4)

[Claims] (1) In a rotary printing machine using web paper, guide rollers 12, 12, .
The rotation peripheral speed of the paper 11 is slightly different from the running speed of the paper 11, and the guide roller 1 is caused to slip due to this speed difference.
2, 12, . . . A guide roller wiping method for a rotary printing press, characterized in that ink piled on the surface of a rotary printing press is wiped. (2) In a rotary printing machine using web paper, guide rollers 12, 12, .
A rotary printing machine characterized in that a rotational speed control device is connected to the shaft portion 12a of the guide rollers 12, 12, . Guide roller wiping device. (3) The rotational circumferential speed of the guide rollers 12, 12, . . . can be freely switched between the same speed as the running speed of the paper 11 and a speed slightly different from the traveling speed of the paper 11. A guide roller wiping method in a rotary printing press. (4) A guide roller wiper in a rotary printing press according to claim 2, characterized in that a drive unit 20 is connected to the shaft portion 12a of the guide rollers 12, 12, . . . via a clutch 40. purification device.