JPH05237792A - Cross-cutting device for cross-cutting web - Google Patents

Abstract

PURPOSE: To prevent jamming during discharge of a sheet by allowing a stripper to go into a groove formed in a counter barrel, and by allowing a cutting blade rest to retract in the range of the stripper. CONSTITUTION: A cross-cutting device incorporates a counter barrel 1 for supporting a cutting blade rest 14, one or a plurality of toothed rollers 2, 3 arranged in the corresponding barrel 1, and a plurality of strippers 18 which are axially arranged and adapted to abut against the counter barrel 1. In this phase, the strippers 18 go into a groove 17 formed in the counter barrel 1, and accordingly, the cutting blade rest 14 can be retracted in the range of the strippers 18. With this arrangement, gaps between the counter barrel 1 and the stripper can be eliminated, thereby it is possible to prevent occurrence of jamming during discharge of a sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transverse cutting device for transversely cutting a web, which is used in, for example, a web rotary printing press, and a corresponding cylinder for supporting a blade receiver and a corresponding cylinder arranged on the corresponding cylinder. It is of the type provided with one or more toothed rollers and a plurality of strippers, which are arranged axially side by side on the corresponding cylinder, for guiding the cut sheet.

[0002]

2. Description of the Related Art In a horizontal cutting device, it is known that a plurality of strippers are arranged side by side on a corresponding cylinder. These strippers take out the cut sheet from the corresponding cylinder. This sheet is then subsequently conveyed to the collecting cylinder, for example using a belt system.

In such a horizontal trimming device, there is a risk that the gap formed when the stripper is in contact with the outer peripheral surface of the corresponding cylinder is clogged.

[0004]

SUMMARY OF THE INVENTION The object of the invention is to improve a transverse cutting device of the type mentioned at the outset and to provide a transverse cutting device in which cut sheets can be reliably derived from their corresponding cylinders. It is to be.

[0005]

In order to solve this problem, in the structure of the present invention, the stripper projects into a groove provided in the corresponding cylinder, and the blade receiver retracts within the range of the stripper. I made it possible.

[0006]

The horizontal trimming device according to the present invention avoids the gap between the outer peripheral surface of the corresponding cylinder and the stripper, and thus avoids the jamming when the sheet is pulled out.

According to the invention, if each blade receiver is fixed to a lever which is supported on a cam plate and is pivotally supported on the body of the corresponding cylinder, the blade receivers are advantageously retractable. Becomes

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

The transverse cutting device shown in FIG. 1 has a counter cylinder 1, which has a first blade roller 2 and a second blade roller each having a circumference of the cutting length. 3 and 3 are arranged. Each double-edged roller has one cutting blade 4;
Supports 5. The cutting blade 4 has a cutting edge with a plurality of interruptions. In the interruption part,
A group of movable belts 6 contacting the corresponding cylinder 1 passes through the blade range. The cutting blade 5 also has a plurality of interruptions, which are offset with respect to the interruptions of the cutting blade 4. A group of movable belts 7 that are in contact with the corresponding body 1 passes through the blade range at the interruption portion provided on the cutting blade 5. Both belts 6 and 7 are deflected via a common belt roller 8. The journals of the bladed rollers 2; 3 and the belt roller 8 each carry one gear wheel 9, 10, 11. The bladed roller 2 is drivingly connected to a gear 12 of the corresponding cylinder 1 via a gear 9. The gear 11 of the belt roller 8 also meshes with the gear 12 of the corresponding cylinder 1, and the shift type intermediate gear 13 and the gear 1
The bladed roller 3 is driven via 0 and. The shift type intermediate gear 13 enables synchronization of the first cutting and the second cutting.

The corresponding cylinder 1 supports a plurality of blade receivers 14, each of which has a circumferential distance in the height of the cutting length. Each blade receiver 14 is a lever 15
It is fixed to. This lever is rotatably supported by the body of the corresponding barrel 1 and is supported by the cam plate 16.
The corresponding cylinder 1 has a plurality of grooves 17 in the circumferential direction, and one stripper 18 projects into each of these grooves. These strippers 18 are followed by a group of movable belts 19.

A web 20 to be cut horizontally, for example, a printed web 20 which is vertically folded by a folding former, is supported by a belt 21 and enters a gap between the corresponding cylinder 1 and the belt 6. In the middle of the counter cylinder 1 and the bladed roller 2, the web 20 is partially cut by the cooperation of the cutting blade 4 and the corresponding blade receiver 14. That is, the interrupted portion provided on the cutting blade 4 leaves a connection to the cutting line on the web 20. This joint is cut only after cutting by the cooperation of the cutting blade 5 of the second bladed roller 3 and the same blade receiver 14. The sheet thus obtained is taken out of the corresponding cylinder 1 by the stripper 18 and then conveyed by the belts 7 and 19 to, for example, the collecting cylinder. The blade receiver 14 is retracted within the range of the stripper 18. This is done when the cam roller 22 provided on the lever 15 rolls along the stationary cam plate 16 when the corresponding cylinder 1 rotates.

In the above embodiment, two toothed rollers are arranged on the corresponding cylinder. However, a lateral cutting device is also conceivable, in which the corresponding cylinder is provided with only one bladed roller.

[Brief description of drawings]

FIG. 1 is a side view of a cross cutting device according to the present invention.

[Explanation of reference numerals] 1 corresponding cylinder, 2,3 bladed roller, 4,5 cutting blade, 6,7 belt, 8 belt roller, 9,1
0,11,12 gears, 13 shift type intermediate gears,
14 blade receiver, 15 lever, 16 cam plate, 1
7 groove, 18 stripper, 19 belt, 20
Web, 21 belt, 22 cam roller

Claims (2)

[Claims] 1. A cross cutting device for cross cutting a web, comprising: a corresponding cylinder supporting a blade receiver; one or a plurality of toothed rollers arranged on the corresponding cylinder; and a cut sheet. In the type in which a plurality of strippers for abutting against the corresponding cylinder are provided side by side in the axial direction for leading out, the stripper (18) is provided with a groove () formed in the corresponding cylinder (1). 17) A crosscutting device for crosscutting a web, which is plunged into 17) and in which the blade receiver (14) is retractable within the range of the stripper (18). 2. Each blade receiver (14) is fixed to a lever (15) supported by a cam plate (16) and pivotably supported on the body of the corresponding cylinder (1). The horizontal cutting device according to Item 1.