JPH09110284A - Paper discharge part of machine for feeding paper sheet by sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and reliably jog paper fed sheet by sheet which is smaller in the size than paper fed sheet by sheet having the ordinary size. SOLUTION: Besides a paper jogging device 12 which is installed in a loading part 8 of a paper fed sheet by sheet and is used for paper fed sheet by sheet having the ordinary size and whose dimension can be adjusted, a paper jogging device 21 for the smaller size in which a paper jogging device 12 cannot jog paper, is arranged in the loading part 8 so as to be mountable and demountable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharge unit of a sheet machine, which enables sheets of a wide range of sizes to be easily aligned.

[0002]

2. Description of the Related Art FIG. 3 shows a conventionally used two-color printing offset sheet-fed printing press. The sheets A stacked on the paper feed unit 1 are separated one by one, printed by the two sets of printing units 2a and 2b, sent to the paper discharge unit 3, and stacked on the pile table 10. A sheet A is placed in the paper output unit 3.
A chain gripper 7 that receives the traveling paper from the impression cylinder 4 of the final printing unit while traveling around the discharge cylinder 5 by a chain 6 and a portion (hereinafter referred to as a stacking portion) 8 for stacking the sheets A released from the chain gripper 7 are provided. Has been.

In the stacking portion 8, the sheets are stacked on the pile base 10 which is supported by the chains 9 at its four corners and descends automatically. Therefore, as shown in FIG. 2, the sheets are stacked in the left-right direction (the width direction of the sheet) and the top and bottom. The sheet aligning devices 11 and 12 in the direction (sheet advancing direction) are provided, and the sheets released from the chain gripper 7 are stacked before being stacked on the already stacked stacked sheets A. The paper is aligned in the left-right direction and the top-bottom direction.

The paper aligning devices 11 and 12 are mechanically oscillated to the illustrated operating positions, and first, the lateral paper guide 1 of the paper aligning device 11 for regulating the left and right ends of the sheets is first.
Front paper guide 12a of paper aligning device 12 that oscillates 1a and 11b and then regulates the front and rear ends in parallel therewith
Alternatively, the rear paper guide 12b swings.

The front guide 12a is attached to a shaft 14 provided between a pair of frames of the paper discharge unit 3 and fixed in position, but the lateral paper guides 11a and 11b and the rear paper guide 12b are composed of sheets. It can be adjusted according to the size of the sheet by moving it according to the horizontal and vertical size of the sheet.

These paper aligning devices 11 and 12 perform good left-right and top-to-bottom paper alignment for paper having a size between the maximum size and the minimum size of the sheet specified in the specifications of the sheet machine. be able to.

[0007]

SUMMARY OF THE INVENTION If the ordinary sheet aligning apparatus described above is capable of aligning an extremely small sheet size, such as a postcard, which is smaller than the ordinary sheet size defined by the sheet-fed machine specifications, There is a problem.

(1) According to the size of the sheet, the lateral paper guide and the rear paper guide have a wide moving range, and the moving mechanism is complicated and long.

(2) It takes time to move the paper guide in each direction of the above item (1) according to the paper size.

(3) Since the size of the sheet in the vertical direction is extremely small, the width of the lateral paper guide (length in the vertical direction) becomes short, and the maximum size of the sheet determined by the specifications of the sheet-fed machine. The paper alignment accuracy in the left-right direction of the paper deteriorates. Further, the length of the rear paper guide in the left-right direction is also shortened, and a large number of rear paper guides are required to improve the alignment of the maximum-sized sheets in the top-bottom direction, which increases the cost.

The present invention solves the above problems and provides a sheet-fed machine capable of improving the alignment of sheets having a size smaller than the minimum-sized sheet specified in the sheet-fed machine specifications. It is intended to provide a paper discharge unit.

[0012]

DISCLOSURE OF THE INVENTION The present invention provides a sheet aligning device which is attached to a sheet stacking portion and is used for a normal size sheet and which can be adjusted according to the size of the sheet. In the sheet discharging unit of the sheet-fed machine provided, a small-size sheet aligning device for aligning a sheet of a size smaller than the minimum-size sheet that can be aligned by the sheet aligning device is detachably provided at the stacking portion.

According to the present invention, not only the normal size but also the small size sheet aligning device detachably provided in the sheet discharge section of the sheet-fed machine can perform the sheet alignment of the sheet of a size smaller than the normal size. be able to. Since the small-size sheet aligning device is detachably attached to the sheet discharge unit of the sheet feeding machine, it is easy to switch to the sheet aligning device of a size smaller than the normal size,
It can be performed in a short time and can be switched even during the operation of the single-wafer machine.

Moreover, since the small-size paper aligning device is provided separately from the normal-size paper aligning device, the small-size paper aligning device is adjusted and preset according to the extremely small size paper in a preset range outside the machine. You can also keep it.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIG. In the present embodiment, a small-size sheet aligning device, which will be described below, is further provided in the sheet discharging section of the conventional sheet-fed sheet feeding machine shown in FIGS. 2 and 3, and in FIG. 1 and FIG. The same parts are designated by the same reference numerals, and the description thereof will be omitted.

In the present embodiment, the small size sheet aligning device is detachably attached to the horizontal beam of the sheet discharging section by the thumbscrew. A small-size sheet aligning device 21 is fastened with a thumbscrew 28 to a cross beam 13 attached to a shaft 14 to which a front paper guide 12a of a normal size sheet aligning device 12 of the paper discharge section 3 is attached.

The small size sheet aligning device 21 has a U-shaped attachment main body 22 and bolts 2 on the arms 23a, 23c and 23b forming the main body 22, respectively.
It is composed of lateral paper guides 24a and 24b and a rear paper guide 25 which are attached by fastening parts such as 6. Each of the guides 24a, 24b and 25 is provided with a long groove 27 in a direction orthogonal to the longitudinal direction of each of the arms 23a, 23c and 23b, and the left and right direction and the top-bottom direction of a small-sized sheet smaller than a normal size. It can be moved according to the size of. The front paper guide includes the front paper guide 1 of the normal size paper aligning device 12.
2a is used. Further, the small size sheet aligning device 21 is attached to and detached from the stacking portion 8 by loosening or tightening the thumb screw 28.

In the present embodiment, although not shown in FIG. 1, a normal size sheet aligning device 11 in the left-right direction shown in FIG. 2 is provided.

In the present embodiment, for the paper between the maximum size and the minimum size of the sheet determined by the specifications of the sheet machine, the normal size sheet aligning tanks 11 and 12 are used as described above. Paper alignment is performed.

When aligning sheets of extremely small size such as postcards, the small size sheet aligning device 21 is used.
By attaching the to the stacking portion 8 with the thumb screw 28, it is possible to align sheets of extremely small size.

Further, by moving the lateral paper guides 24a, 24b and the rear paper guide 25 in the long groove 27 according to the size of the sheet, the small size paper aligning device 21 is adjusted to a position suitable for paper alignment. You can

In the above-described embodiment of the present invention, the small-size sheet aligning device 21 is detachably attached to the device 13 with the thumbscrew 28. It can be freely attached to the cross beam. Further, the small-size sheet aligning device can be attached to the paper ejection unit frame, the paper ejection unit decorative cover, or the like outside the horizontal beam by changing the shape of the attachment portion.

[0023]

By attaching the small size sheet aligning device of the present invention to the normal size sheet aligning device which is already provided in the discharge section, the size smaller than the minimum sheet size within the normal size range can be obtained. It is possible to properly perform the paper alignment of the sheets, and by removing the small size paper alignment device, it is possible to perform the good alignment of the normal size paper sheets by the normal size paper alignment device. Also, it is easy to install and remove the small size paper aligning device,
It can be done easily and in a short time while the machine is running.

[Brief description of the drawings]

1 shows an embodiment of the present invention, FIG. 1 (a) is a side view thereof, and FIG. 1 (b) is a plan view thereof.

FIG. 2 is a side view of a normal size sheet aligning device provided in a stacking portion of a sheet discharging unit of a conventional sheet-fed machine.

FIG. 3 is a layout diagram of an offset sheet-fed printing press.

[Explanation of symbols]

 3 Paper Ejection Section 6 Chain 7 Chain Gripper 8 Stacking Section 10 Pile Stand 11, 12 Normal Size Paper Aligning Device 12a Front Paper Guide 13 Side Beam 14 Axis 21 Small Size Paper Aligning Device 22 Attachment Main Body 23a, 23b, 23c Arm 24a, 24b, Lateral paper guide 25 Rear paper guide 26 Tightening parts 27 Long groove 28 Thumbscrew A Sheet of paper

Claims (1)

[Claims] 1. A sheet discharger of a sheet machine, which is attached to a sheet stacking portion and is used for a sheet of a normal size, and is equipped with a sheet aligning device that can be adjusted according to the size of the sheet. In the section, a small-size sheet aligning device for aligning sheets of a size smaller than the smallest size of sheets that can be aligned by the sheet aligning device is detachably provided in the stacking portion. Sheet ejector of sheet-fed machine.