Guillotine type folding device for rotary press

Abstract

The invention provides a guillotine-shaped hinge device used in a rotary press. The device makes a folder transmitted in a high speed by a transmit device (20A) located by a stopper without damaging an antecedence end. So after the upper and lower transmit belts (21a and 22) clipping the transmitted folder (100) attaches against the stopper (35A) to locate, the stopper face touched by the folder is set as a flowing vertical plane by the guillotine-shaped hinge device of the hinge plate except the place where the folder passing through to make the lower end of the upper transmit belt (21a) attach tightly to the upper part of the stopper, the lower end of the lower transmit belt (22) arranged on the lower side of the stopper. A groove is arrange on a hinge platform (32A) from a place under the belt guiding device of the lower end side of the upper transmit belt (21a) to the lower end of the hinge platform for containing the lower transmit belt (22). A belt pressing-guiding device (23b) is arranged next to the lower side of the stopper (35A) for pressing downward the transmitting face of the lower transmit belt into the groove at least on the lower side of the stopper (35A).

Description

technical field [0001] The present invention relates to a guillotine folding device for a rotary printing machine in which a signature transported by a conveyor belt rests against a chopper table Positioned on the stopper, the folded signature is clamped between two folding rollers by the lowered folding plate (folding blade), and the folded signature is folded in half parallel to the conveying direction. Background technique [0002] The following is from Figure 8-12 A conventional guillotine folding device installed in a folding machine of a rotary printing machine is shown and briefly introduced. [0003] exist Figure 8 Among them, after the signature 100 is released from the drum (drum) 10, it is conveyed to the guillotine folding device 30 by the conveying device 20. The conveying device 20 is composed of a plurality of belt-shaped upper conveying belts 21 arranged side by side in the width direction perpendicular to the conveying direction; The lower conveyer belt...

AI Technical Summary

Problems solved by technology

At this time, in order to lower the lower belt until the signature is in an almost free state, at the guillotine folding position of the folding table, it is necessary to set a cut in a length range that is at least almost the same as the length of the signature in the conveying direction. In this way, the lower belt can be lowered to a position where it is not in contact with the signature. Since there is such a long slit in the conveying direction, the lower belt will sink into the slit due to the weight of the signature during the delivery of the signature, which is different from making the lower belt Compared with sliding on the folding table without cutouts, there is a problem that the conveyance of the folders clamped by the upper and lower belts is very unstable.

[0020] Furthermore, in the folding machine that operates at high speed using the technology of the above-mentioned patent publication, since the lower belt frequently lowers and rises, the belt vibrates, making the delivery of the signature more unstable.

That is, there is a deviation in the timing when the signature is conveyed to the folding table, and the signature is skewed during conveyance, and the stopper cannot correct the skew to perform guillotine folding, thereby deteriorating the bending accuracy

In addition, noise and vibration are generated due to the high-speed reciprocating motion of the pulley moving device for the pulley guiding the lower belt

In addition, since the upper belt is detoured to the upper part of the stopper, there are many upper belts and pulleys on the upper part of the stopper, and the maintenance workability of the stopper part is poor.

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