JPH0585734U - Sheet feeder for sheet-fed printing press - Google Patents

Abstract

(57) [Summary] [Purpose] Since the structure is simple and does not require much space, printing paper can be easily loaded and positioned on the lift table. [Structure] In a sheet feeding device of a sheet-fed printing press, a plurality of roller conveyors 10, 11 and 12 are provided inside a vertical girder-shaped lifting table 2 on which a stack of sheets W is placed, and the roller conveyors 10, 11 and 12 are spaced in a direction perpendicular to each other. When the elevating table 2 is lowered to the lowest position, the rollers 10a, 11a, 12a of the roller conveyors 10, 11, 12 project from the elevating table 2 to stack the printing paper P. After the plate W is placed on the roller conveyors 10, 11 and 12 which are orthogonal to each other, the plate W can be easily moved in both the vertical direction and the left and right directions.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sheet feeding device of a sheet-fed printing press, and more particularly to a sheet feeding device of a sheet-fed printing press provided with a double-column-shaped lifting platform on which a stack of sheets is placed.

[0002]

[Prior Art]

 In the sheet feeding device of the sheet-fed printing press, an elevating table is provided outside the printing press to mount a stacking plate for aligning the edges of printing paper and stacking the paper. There are two types of lifts, one is flat and the other is made up of square girders, and is driven by a chain to move up and down.

In the above-described sheet feeding device having the plate-like lifting table, a plurality of through holes are formed in the lifting table so that the printing paper can be easily positioned at the regular position of the lifting table. There is a support member that protrudes from the lower side of the lift through the elevator, and the paper stack is loaded and loaded on the support member using a carrier such as a forklift. It is known from Japanese Patent No. 118928.

Further, in the above-described paper feeding device provided with a cross-shaped lifting platform, two sets of roller conveyors A1 and A2 are installed linearly behind the paper feeding device 1 as shown in FIG. Generally, the printing paper P is carried in and loaded on the table 2. In that case, the printing paper P is stacked outside the printing machine on the paper stacking plate W with the edges of the paper aligned, and is transported onto the roller conveyor A1 by a carrier F such as a forklift. Then, the printing paper P is pushed onto the elevating table 2, and the left and right direction a of the printing paper P is set to the left and right direction ruler 4 by the screw type moving tool A3 provided on the elevating table 2, and the vertical direction b is set by the roller conveyor A2. The paper ends are brought into contact with the upside-down direction ruler 3, and the printing paper P is loaded in the regular position.

[0005]

[Problems to be solved by the device]

 However, the one equipped with the above-mentioned conventional flat plate-like lifting platform is excellent in that printing paper can be directly loaded and loaded onto the lifting platform by a forklift, etc., and it can be easily positioned at the regular position. Since the through hole must be provided and the supporting member must be prepared according to the shape of the through hole, there are problems that the processing is troublesome and the structure becomes complicated.

Further, the sheet feeding device 1 provided with the above-mentioned conventional cross-shaped lifting platform 2 has a problem that a wide space is required behind the sheet feeding device 1. Then, when the printing paper P is positioned at the regular position of the elevating table 2, the moving tool A3 must be operated, which causes a problem in workability.

In view of the above-mentioned circumstances, the present invention provides a sheet feeding device of a sheet-fed printing press equipped with a cross-shaped lifting platform, which uses a carrier such as a forklift or a handlift for printing printing paper on the lifting platform. It is an object of the present invention to provide a sheet feeding device of a sheet-fed printing press, which is configured to be easily carried in and can be easily positioned at a regular position of an elevator.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a sheet feeding device of a sheet-fed printing press equipped with a cross-shaped elevating table on which a stack of paper sheets is placed. The roller conveyors are arranged at intervals in the directions orthogonal to each other, and the rollers of the roller conveyor are configured to protrude from the above-mentioned lifting table when the lifting table is lowered to the lowest position.

[0009]

[Action]

 When the elevating table of the paper feeding device is lowered to the lowest position, the roller conveyor provided inside the double girder-like elevating table projects from the upper surface of the elevating table. When a stack of printing paper sheets is loaded and placed on the roller conveyor, it can be easily moved up and down and to the left and right by the roller conveyors arranged in directions orthogonal to each other.

[0010]

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic perspective view of a sheet feeding device of the present invention, and FIG. 2 is a schematic plan view of the same as above. The sheet feeding device 1 includes a lifting platform 2 in a girder shape, a vertical ruler 3, a horizontal ruler 4 and the like. .. The cross-shaped lifting platform 2 is formed by a square pipe or the like, and particularly the rear side 2A is detachable from the left and right sides 2B and 2C. Reference numeral 5 is a guide rail for the lifting table 2 provided on each of the left and right frames 1A and 1A, 6 is a lifting drive chain for the lifting table 2, and the lifting table 2 is raised by the lifting drive chain 6 as the printing paper P decreases. To be done. These configurations are the same as conventional ones.

According to the present invention, in this type of sheet feeding device, a plurality of roller conveyors 10, 11, 12 are provided inside the above-mentioned double-column-shaped lifting table 2 so that the feed directions of these roller conveyors are orthogonal to each other. And the rollers 10a, 11a, 12a of the roller conveyors 10, 11, 12 project from the lift table 2 when the lift table 2 is fully lowered.

In the illustrated example, three roller conveyors 10, 11, 12 are used. A plurality of rollers 10a, 11a, 12a are attached to the upper part of the gutter-shaped bases 10b, 11b, 12b, respectively. A torsion coil spring 13 is wound around the roller cores 10c, 11c, 12c on both sides of the roller. However, it goes without saying that the present invention is not limited to this.

The feeding direction of the roller conveyor, that is, the direction is such that the roller conveyors 10 and 12 on both sides are arranged in the paper feeding direction (vertical direction) and the central roller conveyor 11 is arranged in the left-right direction at intervals. .. Reference numeral 14 is a roller conveyor that supports the leading edge of the printing paper P.

When the printing paper P is loaded in the paper feeding device 1 having the above-described configuration, the elevating table 2 is lowered to the lowest position and the rear side 2A is removed. In that state, the printing paper P, which is stacked on the stacking plate W with the paper edges aligned outside the printing machine, is placed on the roller conveyors 10, 11, 12, and 14 by a carrier such as a forklift or a handlift. Then, since the roller conveyors 10 and 12 on both sides are arranged in the vertical direction and the central roller conveyor 11 is arranged in the horizontal direction, the heavy printing paper P can be easily moved without using the lever, and the regular position can be obtained. Can be easily positioned. Then, the rear side 2A is mounted and the elevating table 2 is raised to support the printing paper P via the stacking plate W.

[0015]

[Effect of the device]

 As described above, the paper feeding device of the present invention is a paper feeding device of a sheet-fed printing press provided with a double girder-like lifting platform on which a stack of sheets is placed. The roller conveyors are arranged at intervals in the directions orthogonal to each other, and the rollers of the roller conveyor are configured to project from the above-mentioned elevators when the elevators are lowered to the lowest position. It is practically useful because it can achieve the intended purpose well.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a paper feeding device of the present invention.

FIG. 2 is a schematic plan view of the present invention.

FIG. 3 is a plan view of a conventional example.

[Explanation of symbols]

 1 Paper feeder 2 Elevator 10/11/12 Roller conveyor 10a / 11a / 12a Roller W Paper stack

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65H 1/14 322 A 7716-3F // B65G 47/64 8010-3F

Claims (1)

[Scope of utility model registration request] 1. A sheet feeding device of a sheet-fed printing press provided with a cross-shaped elevating table on which a stack of paper sheets is placed. A sheet feeding device of a sheet-fed printing press, characterized in that the rollers of the roller conveyor are configured to project from the above-mentioned elevating table when the elevating table is lowered to the lowest position.