DE1188036B - Cutting device for staplers of rotary printing machines - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B 42b

German class: lla- 5

Number: 1188 036

File number: Sch 33786 VII b / 11 a

Filing date: June 18, 1959

Opening day: March 4, 1965

In the cutting devices used for staplers in the folding mechanism of rotary printing machines the wire-guiding and wire-cutting parts are subject to heavy wear. The main of these are the nozzle and the cutting knife, possibly also a counter knife affected, because these parts work together when the pieces of wire are cut and are therefore in A short time the trailing edge is worn or the cutting edge is blunt. To with every stapler Replacing two nozzles and regrinding two cutting blades has always been a long downtime of the whole machine.

To eliminate these deficiencies, it is desirable to arrange the wearing parts in such a way that they are as possible * 5 are easily and quickly exchangeable.

Is at a known cutting device of the type mentioned slidably connected in the form of a bar with a plurality of cutting edges formed movable knife with a reciprocating drive part ^ao and reversible longitudinally adjustable by offsetting its pivot bearing point or after removal. In order to bring a new part of the respective cutting edge or another cutting edge into effect, certain holding elements must be used with the help of tools, e.g. B. a screwdriver, which is only possible when the machine is at a standstill.

In contrast, the invention consists in attaching the wearing parts, ie in particular the cutting knife and the wire nozzle, on a common slide which can be removed during operation and exchanged for another slide with corresponding new wearing parts. As a result, not only the movable cutting knife, but at the same time the fixed nozzle, which also requires replacement from time to time, can be removed and replaced in the simplest manner by hand without any tools. If necessary, the machine * ° does not even need to be shut down.

In the drawing, an embodiment of the cutting device according to the invention is shown, namely shows

F i g. 1 the knife position in view, F i g. 2 in plan and partly in section,

F i g. 3 shows a section through the knife holder along the line I-I in FIG. 1.

The cutting device according to FIG. 1, 2 and 3 are interchangeable. On the knife carriage 1, sliding jaws 2 are attached by means of screws 3 on the long sides on the left and right. On the carriage 1 is on the left cutting device for staplers from
Rotary printing machines

Applicant:

Schnellpressenfabrik Frankenthal
Albert & Cie. AG, Frankenthal (Palatinate)

Named as inventor:

Rudi Fischer, Ludwigshafen / Rhein-Oggersheim

The end of a handle 4 is screwed in and between the handle 4 and the sliding jaws 2 is the Knife carriage 1, a locking cam 5 is integrally formed.

To remove the knife carriage 1, the guide grooves 7 are on the side of the base of the frame 6 milled, in which the sliding jaws 2 lead. To lock the slide 1, the jumps in the Frame 6 leading locking bolt 8 which is supported by the spring 9, automatically in front of the locking cam 5. When When the carriage 1 is removed from the working position, the locking bolt 8 is raised by means of the handle bolt 10. In the head of the knife carriage 1 sits at the level of the tools (not shown) for forming staples the wire nozzle 11 and above it by means of a screw 12 is attached a round counter knife 13, which can be rotated in a manner known per se to give the cutting knife a new interface 14 to be able to compare.

The knife 14 is inserted into a recess of the bolt 15 and is with the nut 16 and the washer 17 is tightened against the flange 18 of the bolt 15. The rotary shaft of the bolt 15 is in the Bush 19 and this stored in the knife carriage 1.

If the knife 14 is raised by the cam of the counter cylinder, not shown, the Knife cutting edge past the wire nozzle 11 and cuts pieces of wire clip from the wire web away. After the cam has slid past, the knife 14 jumps under the action of a spring 20 the suspension point 15 rotating, back to the rest position.

Claims (1)

Claim: Cutting device with exchangeable cutting knife in the folding unit of rotary printing 509 517/2 machines, characterized in that the wearing parts, i.e. in particular the Cutting knife (14) and the wire nozzle (11), mounted on a common carriage (1) are removable during operation and against another slide with appropriate new wearing parts is replaceable. Contemplated publications: German Patent No. 577 624; U.S. Patent No. 1,342,240. 1 sheet of drawings 509 517/2 2.65 © Bundesdruckerei Berlin