Printed matter transport device

Abstract

In a printed matter transport device wherein a printed matter is gripped by a gripping mechanism of a chain and made to travel along a guide rail, to improve the durability of the guide rail and chain, to prevent misalignment, falling out and damage when an external force acts on the printed matter, to improve durability of a connecting part of a chain link (base) and the gripping mechanism, to reduce manufacturing costs, and to enable the printed matter to be firmly gripped. A chain with grips comprising first rollers respectively arranged on two sides in the center of the longitudinal direction of the bases, a second roller on one side perpendicular to the common center line of the first rollers and a grip mechanism on the opposite side, a guide rail, a chain drive means and a cam member, a guide rail, a chain drive means and a cam member are provided.

Description

[0001] This is a Continuation of U.S. application Ser. No. 09 / 497,795, filed Feb. 4, 2000, the contents of which are expressly incorporated by reference herein in their entireties.BACKGROUND TO THE INVENTION[0002] 1. Field of the Invention[0003] This invention relates to a device for collecting a printed matter folded by a folding device of a rotary press. More specifically, it relates to a printed matter transport device comprising plural links connected in an endless fashion so that they can undergo angular displacements up and down, or left and right, of a longitudinal direction in a connecting part, wherein these links are provided with grip mechanisms so as to form a chain with grips, the printed matter is gripped by these grips, and the chain with grips is made to travel along a guide rail.[0004] 2. Description of the Related Art[0005] Printed matter transport devices of the above type are described for example in Japanese Patent Laid-Open Hei 5-97302, Japanese Patent Publicat...

AI Technical Summary

Problems solved by technology

The following problems were inherent in the aforesaid prior art.

Therefore, wear of the curved part of the guide rail was large.

Moreover, the first rollers themselves suffer relatively large wear and an unsuitable force acts on the bearings of the first rollers, so durability was low.

Further, as the first rollers slip on the guide-rail as they travel, noise is generated, and this was a contributing factor to deterioration of the working environment.

Moreover, if the gripping force is large, a large force may act on the printed matter, so that the printed matter is creased, wrinkled or torn.

Therefore, the first rollers and second roller always travel in contact with the same part of the guide rail, so this part of the guide rail suffers severe wear, and consequently had low durability.

Therefore, there was the same problem as in the device shown in Japanese Patent Laid-Open Hei 5-97302 in the relation between the first rollers and the guide-rail.

Consequently, wear of the guide rail in this part and wear of the first rollers in this part was even larger due to this sideways slipping than in the devices disclosed in Japanese Patent Laid-Open Hei 5-97302 and Japanese Patent Publication Sho 59-48204, and durability was still lower.

Therefore, the radius of the curved part of the guide rail has to be set large, which made it difficult to make the device compact.

Therefore, when the chain with grips travels around a bend in a direction wherein the travel direction is restricted by the second roller, the first rollers slip sideways in the radial direction of the curved part of the guide rail in the contact part with the guide rail, and wear of the guide rail in this part was comparatively large.

Moreover, the first rollers themselves suffer relatively large wear and an unsuitable force acts on the bearings of the first rollers, so durability was poor.

Further, as the first rollers slip sideways in the contact part with the guide rail as they travel, noise is generated, and this was a contributing factor to deterioration of the working environment.

Therefore, regardless of the disclosure of this Koho, when the first roller follows the action part, the link itself will probably also displace according to the displacement of the first rollers, and it is not certain whether or not the grip mechanism will open.

Therein, two projections provided in the link have the function of supporting the grip mechanism, but this projection must have a smaller thickness than the outer diameter of the second roller, and as a result, durability to shocks in the action of the grip mechanism or the load due to repeated gripping and release of the printed matter was comparatively low.

Therefore, manufacturing costs were high.

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