SE519818C2 - Staple cylinder for a folding apparatus for a rotary printing press - Google Patents

Abstract

The stitching cylinder, at the folding station of a rotary printing press, has a ring piece (2) with projections (8,9) towards the sides of the staple guide grooves (6,7) of the stapling piston (5). The structure prevents breakages at the legs of the staples (16) when binding the folded sheets. The projections (8,9) are at the end sides of a cylinder pin (10) which rotates in a drilling (11) through the ring piece (2).

Description

519 818 2 of the ring part the time consuming direction in the staple cylinder to the staple piston when the ring part with the ridges is self-centering on the staple piston. Together, this avoids times when the machine is stationary. The ridges are easy to manufacture as well as replaceable in the event of wear, if they are arranged on the end sides of a cylindrical path fi, which is rotatably mounted in a borehole in the ring part.

The invention will be explained in more detail here with an exemplary embodiment. The accompanying drawings show diagrammatically: Fig. 1: a staple cylinder in cross section, Fig. 2: the section II-II according to Fig. 1, Fig. 3: a cylindrical path fi with ridges on the end sides.

Fig. 1 shows a staple cylinder in cross section, the section being laid through a head 1.

The stapling cylinder can carry, for example, two heads 1 arranged in the direction of its longitudinal axis, each stapling head 1 having an annular part 2, which is screwed onto the stapling cylinder body 4 by means of a screw 3. The annular part 2 is surrounded by a jaw Fig. 2), the surfaces of the adhesive piston 5 facing the ring part 2 each having a staple guide groove 6, 7. The sides of the ring part 2 facing the staple guide grooves 6, 7 in turn have protruding ridges 8 in the staple guide grooves 6, 7. 9. The ridges S, 9 are arranged on the end sides of a cylindrical pin 10, which is rotatably mounted in a borehole 11 in the ring part 2. This cylindrical pin is shown in Fig. 3.

The staple piston 5 bends in a movement against a bending part, for example a bending cylinder 12, of a provided piece of wire 13, the legs 14, 15 of a staple 16. The unbent wire piece 13 is thinly made. The bending cylinder 12 is stationary rotatably mounted in the folding apparatus. 519 818 3 When the staple piston 5 is moved away from the ring part 2, the staple 16 is formed and is pushed towards the staple when the staple cylinder is rotated in a manner not shown. Upon this movement of the staple piston 5, a possibly broken leg 14, 15 stuck in a staple guide groove 6, 7 is pushed out of the staple guide groove 6, 7 by a ridge 8, 9.

During the assembly work, the ring part 2 can be mounted with only a small amount of time, since the ring part centers itself opposite the staple piston 1 through the ridges 8, 9 engaging in the staple guide grooves 6, 7 and thus eliminates alignment.

Claims (2)

10 519 818 4 Patent claims Staple cylinder for a folding machine for a rotary printing press with a staple piston (5) and an annular part (2), wherein legs (14, 15) of a staple (16) are bent by an available piece of wire (13) during a movement of the staple piston (5) against a bending part (12), which legs fit in the staple guide groove (6,7) of the staple piston (5), characterized in that the ring part (2) on its sides facing the staple guide grooves (6,7) has the staple guide grooves ( 6.7) insertion ridges (8,9) with which broken legs (14,15) of the staple (16) are extendable from the staple guide groove (6,7) of the staple piston (6) upon a movement of the staple piston (5) from the ring part (2) ). Hä fi cylinder according to claim 1, characterized in that the ridges (8,9) are arranged on end faces of a cylindrical path fi (10), which is rotatably mounted in a borehole (1 1) in the ring part (2).