Material or article handling – Tilting vehicle-type handler – Single movable jaw gripper
Reexamination Certificate
2001-09-17
2002-05-14
Bollinger, David H. (Department: 3651)
Material or article handling
Tilting vehicle-type handler
Single movable jaw gripper
C221S204000, C101S408000, C198S596000, C294S104000
Reexamination Certificate
active
06386816
ABSTRACT:
BACKGROUND TO THE INVENTION
1. Field of the Invention
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.
2. Description of the Related Art
Printed matter transport devices of the above type are described for example in Japanese Patent Laid-Open Hei 5-97302, Japanese Patent Publication Sho 59-48204, Japanese Patent 2527724, Japanese Patent 2675520 and U.S. Pat. No. 4,638,906.
In the chain with grips disclosed in Japanese Patent Laid-Open Hei-5-97302, plural chain links are formed by providing two legs having a suitable gap at one end and a projection in the gap between the two legs which can undergo an angular displacement within a suitable angular range at the other ends the two legs and the projections of adjacent links are connected by a spherical bearing provided to the projection and a shaft passing through this spherical bearing, the two ends of the shaft pass through the legs and extend outside, and first rollers free to rotate are provided at both ends of this shaft.
A projection which projects in a perpendicular direction to the direction in which the two legs face each other is formed on one side excepting the two sides on which the first rollers are formed, the end of this projection being an extension which extends in an L-shape below the spherical bearing, and a second roller which is free to rotate around a center line perpendicular to the center line of the shaft is provided on this extension.
A grip mechanism comprising a fixed grip member and an angular displacement grip member provided on this fixed grip member such that it is free to undergo an angular displacement, these members respectively comprising grip action parts parallel to the shaft, is provided on the end face of the projection in the projection direction. In the grip mechanism, the angular displacement grip member undergoes an angular displacement due to a release cam and a closing cam provided in the chain travel path. As a result, the gap with the fixed grip member changes so that the grip member opens or closes. The open state and closed state are maintained by a toggle mechanism.
This chain with grips is made to travel along a guide rail.
SUMMARY OF THE INVENTION
In the chain with grips disclosed in Japanese Patent Publication Sho 59-48204, plural chain links are formed by providing two legs having a suitable gap at one end and a projection parallel to the legs in the gap between the two legs which can undergo an angular displacement within a suitable angular range at the other end, the two legs and the projections of adjacent links are connected by a spherical bearing provided to the projection and a shaft passing through this spherical bearing, the two ends of the shaft pass through the legs and extend outside, and first rollers free to rotate are provided at both ends of this shaft.
A lever which extends below the spherical bearing from the base of the two legs is provided to each chain link, and a second roller free to rotate around a center line perpendicular to the center line of the shaft is provided at the free end of this lever.
A rod having a center line parallel to the shaft extends from this arm on one side of the chain link. This rod captures the leading edge of a printed matter, and is assisted by a crank when transporting it.
This chain with grips is made to travel along a guide rail.
In the chainwith grips disclosed in Japanese Patent 2527724, plural chain links are formed from bases approximately having the shape of an isosceles triangle in a plan view. Two legs are provided with a suitable gap on the base part of the base and perpendicular to the base side, and a projection parallel to the legs in the gap between the two legs which can undergo an angular displacement relative to the legs within a suitable angular range, is provided at the apex. The two legs and the projections of adjacent links are connected by a spherical bearing provided to the projection and a shaft passing through this spherical bearing, the two ends of the shaft pass through the legs and extend outside, and first rollers free to rotate are provided at both ends of this shaft.
Second rollers free to rotate around an axis perpendicular to the shaft is provided to each chain link in the vicinity of the two ends of the base side such that their respective outer circumferential surfaces are situated further outside than the outer circumferential surfaces of the first rollers.
A grip mechanism comprising a fixed grip member and an angular displacement grip member provided on this fixed grip member such that it is free to undergo an angular displacement, these members respectively comprising grip action parts parallel to the shaft, is provided on a lower surface in the center part of each base. In the grip mechanism, the angular displacement grip member undergoes an angular displacement due to a release cam and a closing cam provided in the chain travel path. As a result, the gap with the fixed grip member changes so that the grip member opens or closes. To maintain the closed state, a closed state holding mechanism is provided comprising a wrap spring which wraps the outer circumferential surface of a pivot formed in one piece with the angular displacement grip member and a bush which supports this pivot such that it is free to undergo an angular displacement. The angular displacement grip member is held in the closed position by this mechanism.
This chain with grips is made to travel along a guide rail.
In the chain with grips disclosed in Japanese Patent 2675520, plural chain links are formed by providing two legs having a suitable gap at one end and a projection parallel to the legs in the gap between the two legs which can undergo an angular displacement within a suitable angular range at the other end, and the two legs and the projections of adjacent links are connected by a spherical bearing provided to the projection and a shaft passing through this spherical bearing.
Shafts having a common center line parallel to the facing direction of the two legs are connected to a lever which can undergo angular displacement together with an angular displacement grip member described later, and are provided on both sides of the chain link in the approximate center of each chain link. First rollers free to rotate are respectively provided to each of these split shafts.
A second roller free to rotate around an axis perpendicular to the aforesaid common center line is provided below a connecting part of each chain link.
A grip mechanism comprising a fixed grip member and an angular displacement grip member provided on this fixed grip member such that it is free to undergo an angular displacement, these members respectively comprising grip action parts parallel to the shafts, is provided on the lower surface of the center part of each base, and a lever to which the first rollers are attached is connected to the angular displacement grip member of the grip mechanism so that it can undergo an angular displacement together with it.
An action part lower than the other parts is provided on a guide surface of the guide rail which guides the motion of the chain, and which supports the first rollers from underneath. In this action part, when the first rollers displace along the guide surface, the angular displacement grip member is caused to undergo an angular displacement. As a result, the gap with the fixed grip member changes so that the grip mechanism opens or closes. At the same time, the up/down displacement of the first rollers is restricted by parts excepting the action part of the guide surface, and the angular disp
Motojima Kazuyuki
Urea Yoshinori
Bollinger David H.
Bower Kenneth W.
Greenblum & Bernstein P.L.C.
Tokyo Kikai Seisakusho Ltd.
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