JPH0214192B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for reprinting a daily calendar or a monthly calendar (hereinafter simply referred to as a flip calendar) using an offset printing machine.

An offset printing machine for additional printing on a turning calendar will be explained with reference to FIG. 1, which is an omitted explanatory diagram. Reference numeral 1 represents ink, and 2 represents an ink source roller.
This roller 2 is driven intermittently, and a part of the ink adhering to its surface is supplied to a kneading roller 4 by a copying roller 3 which is swingably supported, and the ink on the roller 4 is transferred to an ink transfer roller 5. Supplied. 6 and 7 are leveling rollers.

The ink on the ink transfer roller 5 is supplied to the print, and the plate of this offset printing machine is a lithographic plate 8, so the ink on the ink transfer roller 5 is supported by a frame 9 that runs on the lithographic plate 8. The planographic plate 8 is supplied from the ink roller 10 to the ink roller 10.
The ink of the lithographic plate 8 is supplied to the blanket 11.
The blanket is transferred to the paper 13 on the table 12. In this operation, the frame 9 moves forward over the lithographic plate 8 so that the ink roller 10 and the blanket 11 come into contact with the lithographic plate. It is assumed that ink is being supplied to the ink roller 10 at this time.

At this time, the ink from the ink roller 10 is supplied to the flat plate 8, and the ink supplied to the flat plate 8 is transferred to the blanket 11.

At the most advanced position of the frame 9, ink is supplied from the ink transfer roller 5 to the ink roller 10, the ink roller 10 and the blanket 11 rise away from the printing plate 8, and the frame 9 retreats and reaches the top of the printing table 12. Then, only the blanket is lowered and the rear frame 9 comes into contact with the fixed position of the paper 13 on the printing table 12, and moves forward, so that the ink on the blanket is transferred onto the paper surface.

When the frame 9 separates from the printing table 12, the ink roller 10, which had been raised, descends, the frame 9 moves forward, and the above-described operation is repeated.

Note that the ink roller 10 is in contact with a water rod roller, and the blanket 11 is in contact with an ink wiping roller, but these are not shown.

By the way, with the conventional offset printing machine mentioned above, in order to reprint a flip calendar, the calendar must be placed one by one on the table, which is a semi-manual process.
Furthermore, when a reprinted page is reversed using a reversing bar, there is a high risk of double page turning.

This invention solves the above-mentioned problems of reprinting a turning calendar using an offset printing machine.The purpose of this invention is to fit and support a large number of turning calendars into a cassette, and to remove the reprinted pages using a reversing bar. To provide a reprinting device for a turning calendar that can automatically and reliably turn over one sheet at a time.

The details of this invention will be explained below based on the embodiment shown in FIG.

In the same figure, reference numeral 14 indicates a table corresponding to the printing table 12 in FIG. Inside, the part corresponding to the binding side a of the calendar is deepened with a gentle slope. 17 is a plate spring that presses down the free end of the calendar.

A belt conveyor 18 is disposed at the upper part of the table 14 corresponding to the calendar loading side.

The belt conveyor 18 is composed of a conveyor body 19 and a feeder roll 20 driven by the conveyor body, and the feeder rolls 20 are in contact with portions on both left and right sides of the calendar that do not affect reprinting as a left and right pair. 21 is a belt for driving the follower roll.

The belt in the conveyor body 19 is porous,
And on the back of the lower running zone there is a vacuum box 2.
2 is arranged with its suction surface in contact with the lower running zone.

The lower running belt of the conveyor body 19 and the follower roll 20 are configured to rotate in the direction of the arrow, that is, in the direction of turning the turning calendar 15. Reference numeral 23 denotes a lifting rod for the table 14, which lifts the table when the height becomes lower due to the turning of the calendar, thereby making printing proper.

This invention has the above-mentioned structure, and the reprinting device for the turning calendar in this offset printing machine has a belt conveyor disposed on the outer end of a cassette-type table, and the belt conveyor is connected to the conveyor body and the printing table driven by the conveyor body. The conveyor body is made up of a suction roll that contacts the top calendar, and a vacuum box contacts the back side of the lower running belt of the porous belt, and the lower running belt and the suction roll rotate in the turning direction of the calendar. Since the ink roller 10 and the blanket 11 are movable, the frame 9 supporting the ink roller 10 and the blanket 11
moves onto the table 14 and is additionally printed on the surface margin of the turning calendar 15 by the blanket 11, and the frame body 9 leaves the turning calendar. Next, the belt conveyor 18 is driven, and the cover roll 20 is moved to the top of the turning calendar. Rotate and rub the upper layer paper to the loading side of the calendar and move it.
Therefore, the top layer paper of the calendar is pulled toward the binding side and floats up in a curved manner as shown by the chain line in the figure. When the floating section comes into contact with the lower running zone of the conveyor belt, it is attracted to the belt by the suction force of the vacuum box 22. The calendar paper is then moved to the binding side, and finally hangs down outside the outer edge of the table 14, and the reprinted calendar paper is intermittently attracted to a conveyor belt and turned over, for example, in the case of a monthly calendar. A large number of books can be printed one on top of the other, reversal can be performed using a satsuka roll and a baguette conveyor belt, and one sheet can be turned over automatically and reliably, so that the efficiency of reprinting can be significantly increased compared to the conventional method.

[Brief explanation of drawings]

FIG. 1 is an explanatory side view of a conventional offset printing press for calendar reprinting, and FIG. 2 is an enlarged partially cutaway side view of an example of the reprinting apparatus for a turning calendar of the present invention incorporated in the same printing press. 14...cassette type table, 15...monthly calendar, 16...recess, 18...belt conveyor, 19...conveyor body, 20...sugar roll, 22...vacuum box.

Claims (1)

[Claims] 1 Consists of a printing table and a belt conveyor disposed on the outer end of the printing table, the printing table is of a cassette type into which the turning calendar stack is immovably loaded, and the belt conveyor is connected to the conveyor body and interlocked therewith. The main body of the conveyor includes a suction roll that contacts the turning calendar on the printing table, and a vacuum box is arranged with its suction surface in contact with the back side of the lower running belt of the porous belt. A reprinting device for a turning calendar for an offset printing press, characterized in that a running belt and a suction roll rotate in the turning direction of the turning calendar.