JPH0241418B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a body pillow for a rotary printing press, which comprises:
The present invention relates to a type having an inner ring with a support made of hardened steel, which engages in the drive journal of the printing press cylinder.

BACKGROUND OF THE INVENTION DE 27 01 637 A1 discloses a splittable cylinder pillow which is mounted in parts on the drive journal of a printing press cylinder.

However, such known body pillows have the disadvantage that whenever they need to be replaced, the entire expensive body pillow has to be replaced.

From DE 27 01 670 A1, a rotary wheel with an elastic damping cover made of a strip of material is known. However, due to their deformable nature, such coverings, which serve for vibration damping, are not suitable for guaranteeing the functioning of highly loaded rotating wheels. In other words, the function of the rotating wheel is fulfilled by a precisely manufactured hardened body pillow.

Problem to be Solved by the Invention The problem to be solved by the invention is to provide a trunk pillow of the above-mentioned type (= rotating wheel ).

Means for Solving the Problem The measures taken to solve the problem described above consist of a plurality of steel belts with supports placed one after the other, and for each steel belt, a A tensioning device is provided which is located in the recess, and the recesses located one after the other are angularly offset from one another over the outer circumferential surface of the inner ring.

Effects of the Invention The main advantage of the present invention is that when a running surface of a body pillow becomes damaged or worn out, only the steel belt with the running surface needs to be replaced, rather than the entire body pillow. According to the invention, a thick or thin steel belt can also be stretched over the inner ring of the relevant cylinder pillow of the cylinder, for example between two printing units located side by side, of a web rotary printing press. The diameter of the trunk pillow can be stepped up very easily. The tiers of the body pillow can be changed on the fly as required when the type or thickness of the web changes. If the cylinders are provided with identical inner rings, it is possible by simple means to carry out the necessary grading by means of steel belts of different thicknesses.

Embodiment Next, the present invention will be explained using the illustrated embodiment, limited to the trunk pillow (=rotating wheel).

For example, on the drive journals (not shown) on both sides of the plate cylinder 1, there are inner rings 2 made of steel, each having a width of 70 mm.
is attached and positively connected to the journal.

On the outer peripheral surface 3 of the inner ring 2 having a width of, for example, 70 mm, a plurality of thin steel belts 4, for example three, hardened and having uniform strength are placed side by side. The steel belts may be closely spaced or spaced apart from each other. The illustrated steel belt 4 is a so-called standard belt, ie the thickness variation over its length is within very small limits.

In order to fix each steel belt 4, one notch 6 is formed in the outer peripheral surface 3 of the inner ring 2, corresponding to each belt. Viewed in the circumferential direction of the inner ring 2, the sides of the recess 6 are rounded, so that when the steel belt 4 is tightened, the ends 7, 8 of the belt are rounded.
can be stretched well. Both ends 7, 8
A hole is formed in the hole through which the ends 7, 8 pass through a circular bush 11 having a collar 9. In order to receive this bushing 11, a flat hole 12 is drilled in the bottom of the notch 6, and this hole 12 transitions into a screw hole 13 at its tip. The bush 11 is attached to the shaft portion of a hexagon socket head screw 14. The bush 11, the hole 12, the threaded hole 13 and the headed screw 14 form a tightening device for the steel belt. To tighten the steel belt 4, a headed screw 14 is screwed into the threaded hole 13, and the ends 7, 8 of the steel belt 4 to be tightened are drawn into the recess 6 via the bush 11.

For example, in order to ensure quiet operation of cylinder cylinders, which rotate in pairs, such as a blanket cylinder and a plate cylinder, recesses 6 for adjacent steel belts 4 are in each case formed on the outer circumferential surface of the inner ring 2. For example, when three belts are placed next to each other, they are offset by an angle α of 120°. This prevents, for example, the cylinder head of the printing form cylinder 1 from falling into a recess in the cylinder head of the blanket cylinder.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
FIG. 1 is a partial view of the trunk pillow according to the present invention seen from above;
FIG. 2 is a sectional view taken along the - line in FIG. 1. 1... Plate cylinder, 2... Inner ring, 3... Outer circumferential surface, 4...
...Steel belt, 6...Notch, 7, 8...End, 9
...Brim, 11...Butsuyu, 12...Hole, 13
...Threaded hole, 14...Screw with head, α...Angle.

Claims (1)

[Claims] 1. Cylinder supports for rotary printing presses, of the type having an inner ring with a support made of hardened steel, which engages in the drive journal of the printing press cylinder, said support having a counterpart. It consists of a plurality of steel belts 4 arranged side by side, for each steel belt 4 a tightening device 11, 12, 13, 14 located in a cutout 6 formed in the outer circumferential surface 3 of the inner ring 2 is provided. Notches 6 are provided and are located side by side.
are offset from each other by an angle α over the outer peripheral surface 3 of the inner ring 2.