JPH0215386B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for reprinting a daily calendar or a monthly calendar (hereinafter simply referred to as a flip calendar) using an offset printing machine.

[Conventional technology]

An offset printing machine for reprinting on a turning calendar will be explained with reference to FIG. 1, which is an omitted explanatory diagram. 1 is an ink, 2 is an ink source roller, 3 is a copying roller, 4 is a kneading roller, and 5 is an ink transfer roller. , 6 and 7 are leveling rollers.

The ink on the ink transfer roller 5 is supplied to the lithographic plate 8 by an ink roller 10 supported by a frame 9 that runs on the lithographic plate, and the ink on the lithographic plate 8 is transferred to a bracket 11 and printed on paper on a table 12. .

In order to reprint a flip calendar using the above-mentioned printing machine, the calendars were placed one by one on a table, and the reprinted pieces of paper were reversed using a reversing bar.

[Problem that the invention seeks to solve]

The operation of placing each calendar for reprinting on the offset printing machine (printing table) is semi-manual and inefficient, and reversing the reprinted sheets using the reversing bar poses the risk of double turning. be.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention includes a printing table, a belt conveyor whose inclined lower end faces the outer end of the table and whose inclined lower side can be moved up and down, and a belt conveyor that is detachable from the outer end surface of the table. The lower inclined end of the belt conveyor is horizontal along the top surface of the printing table, and a downward-facing vacuum box is provided in the horizontal part, and the belt of the belt conveyor is perforated. This is a reprinting device for a turning calendar for an offset printing press, which rotates the lower running belt in the turning direction of the calendar.

[Effect]

Attach a clamping frame in which a number of calendars are bundled together near the binding section to the outer end surface of the printing table with the binding side of the calendar facing downward, and place most of the free side of the calendar on the printing table. Apply additional printing by bringing the inclined lower end of the belt conveyor into contact with the part that has been placed and is not related to additional printing,
Simultaneously with the retreat of the reprint roll, etc., the vacuum of the belt conveyor is activated, and the conveyor is driven while raising the lower side of the slope, and while only the reprinted paper pieces are sucked, they are reversed to the outer edge of the table, and then the belt conveyor stops driving the vacuum and belt and descends again.

〔Example〕

In Fig. 1 and Fig. 2, 13 is the printing table 12.
This calendar is a top-turning calendar, and in this calendar, a number of books are held in a holding frame 14, and the holding frame has hook portions 15 at both ends thereof attached to an arm 16 projecting in the horizontal direction at the outer end of the printing table.

The turning calendar 13 is inserted into the holding frame 14 using a separate table 17 as shown in FIG.

The table 17 has an alignment plate 19 with upwardly protruding comb-shaped guide pieces 18 for shifting and aligning the free ends of the calendars. As shown in FIG. 5, one side a of the clamping frame 14 is fitted, and a large number of flipping calendars 13 are stacked on top of it with their free ends facing the guide piece 18, and the clamping frame is used to bind the calendars. 21, align the left and right sides of the calendar with a ruler 22, put the free end against the guide piece 18, shift and align it, stack the other piece b on top of the one piece a, and tighten the thumbscrew 23. To fasten and join.

The group of turning calendars 13 held by the clamping frame 14 in this manner is placed with its free end on the table with the clamping frame attached to the outer end of the printing table, so that the gap in the free end disappears. Align vertically.

Reference numeral 24 indicates a calendar left and right positioning guide piece attached to the printing table 12.

An inclined lower end of a belt conveyor 25 is exposed above the outer end of the printing table 12, and this inclined lower end is movable up and down by a hydraulic cylinder 26 or the like.

The lower end of the slanted belt conveyor 25 is horizontal along the upper surface of the printing table 12, and a vacuum box 27 with an open bottom is disposed within the horizontal portion, as shown in enlarged FIG. 3. ,
The belt 28 of the belt conveyor is provided with holes 29 along its entire length. 30 is a baquium horse.

The lower running band of the belt conveyor 25 rotates in the turning direction of the turning calendar 13.

The turning calendar reprinting device in this offset printing machine is capable of printing a large number of turning calendars 13.
The calenders are bundled in the clamping frame 14, and the free end side is placed on the printing table, and the inclined lower end of the belt conveyor faces the free side of the calendar on the table, and the lower surface of this inclined lower end is used as a vacuum box. Since the calender sheets are facing open, the reprinted calendar paper pieces are sequentially reversed as shown by the chain line in FIG. 1 when the belt conveyor operates the vacuum and starts driving the belt conveyor. Reference numeral 31 indicates an air nozzle facing the side of the lower inclined end of the belt conveyor, which separates the uppermost paper of the calendar from the lower paper layers and ensures that only the uppermost paper is inverted.

〔effect〕

(1) Since the flip calendar can be set on the printing table with multiple books held in the holding frame, there is no need to set the flip calendar one by one on the printing table as in the past, and the efficiency of reprinting is significantly improved. do.

(2) Reversing the reprinted pieces of paper on the turning calendar is done automatically and one by one by rotating the belt of the belt in the turning direction while being attracted to the vacuum box at the horizontal part of the lower inclined end of the belt conveyor. There is no fear of double-turning as seen in conventional reversing bars.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory side view of an offset printing machine for reprinting a flip calendar, FIG. 2 is an enlarged partially cutaway perspective view of the main parts of the same, and FIG. FIG. 4 is a perspective view of the working table in the process of clamping the turning calendar to the clamping frame, and FIG. 5 is an enlarged perspective view of the essential part of the same from the opposite side. 12...Printing table of offset printing machine, 1
3... Turning calendar, 14... Turning calendar holding frame, 25... Belt conveyor, 26...
Cylinder, 27... Vacuum box, 28
...Belt, 29...holes.

Claims (1)

[Claims] 1. A printing table, a belt conveyor whose inclined lower end faces the outer end of the table and whose inclined lower end can be raised and lowered, and a turning calendar clamp detachably attached to the outer end surface of the table. The inclined lower end of the belt conveyor is horizontal along the upper surface of the printing table, and a vacuum box facing downward is provided in the horizontal part, and the belt of the belt conveyor is porous, and the lower running band is turned over to form a calendar. A reprinting device for a turning calendar for an offset printing press, which is characterized by rotating in the turning direction.