JPH11263000A - Sheet-like material delivering unit for printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply remove a spoiled sheet without deviating a sheet-like material without interrupting a printing. SOLUTION: A sheet 10 supplied from a sheet feeder 2 is printed by a printing unit 3, delivered by a delivery unit 4 and loaded as a loading sheet 10B on a pipe. A printing surface of the sheet 1 printed by the unit 3 is inspected by a sheet inspecting camera 15. When it is decided as a spoilage, a sheet receiving member 40 is advanced on the loaded sheet 10B. After this spoilage 10a is dropped on the sheet 10B, the member 40 is advanced to temporarily support following normal sheet 10b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharging apparatus for a printing press, which removes defective printing from a sheet discharged after being printed and stacked.

[0002]

2. Description of the Related Art For example, in a sheet-fed rotary printing press, defective printing papers may be generated during printing, and if these are stacked in a paper discharging device, the position of the defective printing papers cannot be determined. . Therefore, the quality of the printed matter is inspected immediately after printing, and as a result, some mark is attached to the defective printing paper determined to be defective so that the stacked position can be identified. As an apparatus for adding this mark, there is an apparatus for inserting a display tape into a place where defective printing paper is stacked by using a tape inserter as disclosed in Japanese Patent Application Laid-Open No. Hei 3-102051. According to this device, since the tape is inserted into the position where the defective print paper has occurred, the operator can remove the defective print paper from the stacked paper sheets using the tape as a mark.

[0003]

However, in the above-described conventional apparatus, the paper falls without interruption as the printing speed increases, so that even if an attempt is made to insert the tape into a poorly-printed paper, the tape may not be inserted. In some cases, the insertion position is shifted, which makes it difficult to accurately display the position of the defective printing paper. In addition, in order to remove defective printing paper from the stacked paper stack, printing must be interrupted or removed after completion, which not only reduces productivity, but also removes the work, which is complicated and time consuming. There is also a problem that paper misalignment is likely to occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to easily print a defective sheet without interrupting the printing and without causing the sheet to shift. An object of the present invention is to provide a sheet discharge device of a sheet-fed rotary printing press capable of removing an object.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a sheet for a printing press which conveys a sheet-like material whose quality has been inspected by a print quality inspecting apparatus and stacks the same on a pile. A sheet discharge device, wherein when the print quality inspection device detects a defective print sheet, the defective print sheet material stacked on the pile based on a detection signal of the print quality inspection device. And a sheet receiving member for temporarily receiving the next normal sheet is provided. Therefore, while the normal sheet is temporarily received by the sheet receiving member, the poorly printed sheet located at the uppermost position of the stacked stacked sheets is removed. According to a second aspect of the present invention, in the first aspect of the present invention, there is provided a counter for counting the number of sheets of a printing failure detected by the print quality inspection apparatus, and a printing failure counted by the counter. And a display for displaying the number of sheets. Therefore, by removing the sheet-like material on the stacking paper according to the number of sheets displayed on the display, the sheet-like material having poor printing is removed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing the overall configuration of a sheet discharge device of a printing press according to the present invention, FIG. 2 is a plan view of the discharge device, and FIG. 3 is III-III in FIG.
FIG. 4 is a front view of the same main part, FIG. 5 is a view taken in the direction of the arrow V in FIG. 4, and FIG. 6 is a block diagram showing a control system of the discharging device.

In FIG. 1, a sheet-fed rotary printing machine generally designated by the reference numeral 1 comprises a sheet feeder 2 which sucks a stack of sheets 10A one by one by a sucker device (not shown) and feeds the sheets 10 to a board 11, and The printing apparatus generally includes a printing unit 3 for printing and a paper discharging device 4 for discharging and stacking printed paper. 12 is a paper detection sensor for detecting paper on the board 11, 13 is an impression cylinder that contacts a blanket cylinder (not shown), 14 is a rotary encoder that detects the rotation amount of the impression cylinder 13,
Reference numeral 15 denotes a paper inspection camera for inspecting the quality of the printed surface of the printed paper. Reference numeral 16 denotes a pair of left and right discharge frames, and reference numeral 17a denotes a pair of left and right sprockets (one not shown) coaxially mounted on the discharge cylinder 17 which is in contact with the impression cylinder 13.

[0008] A pair of left and right sprockets 18 (one not shown) are rotatably supported at the rear of the paper discharge frame 16.
A pair of right and left paper discharge chains 19 (one not shown) is stretched between the pair of paper discharge chains 7a and 7a. A plurality of claw rods (not shown) are supported at regular intervals in the running direction between the left and right paper discharge chains 19, and these claw rods have a plurality of claw and claw bases. The gripper devices (hereinafter, referred to as claws) 20 are arranged in the axial direction. The nail of the discharge cylinder 19 is replaced by the nail of the impression cylinder 13 with the arrow A.
The paper 10 conveyed in the direction is released from the grip of the claw 20 and falls on a pile (not shown) by the claw 20 being brought into contact with a cam (not shown). Be loaded. The above-described sheet ejection or printing surface inspection is not significantly different from the sheet ejection device and printing surface inspection device of a sheet-fed rotary printing press that has been widely used in the past.

When the paper inspection camera 15 determines that the paper is defective, the number of defective papers is counted by a counter (not shown). Printing press 1
The display is configured to be displayed by a display (not shown) provided on the operation panel. The count value of the counter and the display of the display are both reset to zero by a reset operation performed after the operation of removing the defective printing paper is completed as described later.

Next, the falling device of the pad 23 will be described with reference to FIG. 27 and 28 are left and right brackets,
It is located slightly behind the sprocket 18 on the rear side,
It is hung on the left and right discharge frames 16,16. The abutment shaft 29 is rotatably supported by the left and right brackets 27 and 28 in a state where the movement in the axial direction is restricted by the collars 30 and 31. On this contact shaft 29,
A plurality of abutments 23 are arranged in the axial direction and are fixed by split fastening, and a base end portion of a lever 32 is fixed to a portion of the abutment shaft 29 protruding outside the discharge frame 16. An air cylinder 33 is pivotally attached to one of the paper discharge frames 16 via a bracket 34, and the working end of the piston rod 33 a is pivotally attached to the free end of the lever 32. By moving the piston rod 33a forward and backward, the contact shaft 29 is rotated by a predetermined angle in the forward and reverse directions via the lever 32, and the contact 23 is positioned in an upright state shown by a solid line in FIG. It is configured to be.

Next, a temporary paper receiving device 35 which is a feature of the present invention will be described with reference to FIGS. Between the left and right frames 16, a paper receiving support shaft 36, which is positioned obliquely above the contact shaft 29, is rotatably supported, and a link support shaft is provided beside the paper receiving support shaft 36. 37 is rotatably supported between the left and right frames 16, 16. Two links 38 and 4 are provided on both support shafts 36 and 37.
And a pair of paper receiving members formed in a rectangular shape in a plan view and inverted in a side view in a side view. 4
0 is pivotally connected via the protrusion 41.

A pair of auxiliary paper receiving members 42 formed in a plate shape substantially the same as the paper receiving member 40 are pivotally attached to the two outer links 39 via protruding pieces 43. A connecting shaft 44 penetrates the projecting piece 43 so as to become a pivot of the projecting piece 43 and connects the paper receiving members 40 and 42 to each other. A bracket 46 fixed to the other frame 16 has an air cylinder 4
The working end of the piston rod 48 is pivotally connected to a free end of a lever 49 fixed to a portion of the paper receiving paper shaft 36 protruding outside the frame 16.

By moving the piston rod 48 of the air cylinder 47 forward and backward, the paper receiving support shaft 36 is rotated by a predetermined angle in the forward and reverse directions via the lever 49, and the paper receiving member 40 and the auxiliary paper receiving member 42 Performs link motion with the links 38 and 39. Then, as shown by a solid line and an alternate long and short dash line in FIG. 3, the leading ends of the paper receiving member 40 and the auxiliary paper receiving member 42 advance and retreat with respect to the falling path of the paper 10 and support the paper 10 falling by entering. It is configured to be. Reference numeral 50 denotes a pair of left and right support tubes 50 fitted on the outer peripheral portion of the paper receiving support shaft 36, and the flange 51
6 fixed.

Next, the control of the advance timing of the paper receiving member 40 and the auxiliary paper receiving member 42 and the control of the timing of the fall of the pad 23 will be described with reference to FIGS. When the paper 10 is detected by the paper detection sensor 12, the control device 55 controls the paper inspection camera 22 to detect the quality of the printing surface at a predetermined timing based on the detection amount of the rotary encoder 14. When the paper inspection camera 22 determines that the paper is a genuine paper, the abutment 23 is positioned in an upright position, and the paper receiving member 40 and the auxiliary paper receiver 42 are positioned in a retracted state. Therefore, the paper 10 released from the grip of the pawl 20 of the paper discharge chain 19
Are piled up on a pile with their tips aligned.

On the other hand, when the paper inspection camera 22 determines that the printing paper is defective and the next paper is determined to be genuine paper, the control unit 55 replaces the defective printing paper 10 a with the loaded paper based on the detection amount of the rotary encoder 14. Control is performed so that the solenoid valve 56 is opened at the timing when the solenoid valve 56 falls on 10B. Therefore, the operating rod 48 of the air cylinder 47 extends, and the paper receiving member 40 and the auxiliary paper receiving member 42
The paper advances so as to face above 0a, and temporarily supports the leading edge of the next regular paper 10b and thereafter. For this reason, the defective printing paper 10a on the stacking paper 10B can be removed without interrupting the printing, thereby improving the productivity and forming a gap between the defective printing paper 10a and the subsequent regular paper 10b. When the defective printing paper 10a is removed,
OB can be easily removed without causing paper misalignment. At this time, the control device 55
Since the operating rod 33a of the air cylinder 33 is controlled to extend and the pad 23 falls down, the work of removing the defective printing paper 10a is facilitated, and the workability is improved.

On the other hand, if the defective printing paper 10a is continuously generated, the paper receiving member 40 and the auxiliary paper receiving member 42 do not advance until the next normal paper 10b is discharged.
The defective printing paper 10a is successively stacked on the loading paper 10B, so that it is not necessary to remove the defective printing paper 10a one by one. The number of the continuous defective printing paper 10a is counted by a counter, and the number is displayed on a display, so that the operator can easily and accurately print the defective printing paper 10a.
a can be removed, thereby improving workability.
In FIG. 3, the paper receiving member 4 positioned at the alternate long and short dash line is shown.
Although the distance between the zero and the pad 23 appears to be small, the paper receiving member 40 and the pad 23 are out of phase in the paper width direction, so there is no support for inserting the hand.

When the operation of removing the defective printing paper 10a is completed and the operator presses a reset button (not shown), the operating rod 33a of the air cylinder 33 retreats.
3 returns to the standing state. Immediately thereafter, since the operating rod 48 of the air cylinder 47 retreats, the paper receiving member 40
And the auxiliary paper receiving member 42 retreats from the loading paper 10B, and the normal paper 10a temporarily supported by the paper receiving member 40 and the auxiliary paper receiving member 42 is loaded on the loading paper 10B, and Is also stacked on the stacking paper 10B. Also, the count value of the counter and the display of the display are both returned to zero by this reset operation.

In the present embodiment, the sheet 10 to be discharged is the paper 10, but it may be a vinyl chloride sheet or a film, and various selections are possible.

[0019]

As described above, according to the first aspect of the present invention, the normal sheet is temporarily supported by the sheet receiving member while the defective sheet is removed. The sheet-like material having poor printing can be removed without interrupting the printing operation, thereby improving the productivity.
In addition, since the normal sheet-like material is supported by the sheet-like material receiving member, it is possible to easily remove the defective sheet-like material without causing the sheet-like material to shift, thereby improving workability. .

According to the second aspect of the present invention, the number of defective sheets is displayed, so that the defective sheets can be accurately and easily removed, thereby improving workability. .

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating an entire configuration of a sheet discharge device of a printing press according to the present invention.

FIG. 2 is a plan view of a sheet discharge device of the printing press according to the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a front view showing a main part of the sheet discharge device of the printing press according to the present invention.

FIG. 5 is a view taken in the direction of the arrow V in FIG. 4;

FIG. 6 is a block diagram showing a control system of the sheet discharge device of the printing press according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... sheet-fed rotary printing press, 2 ... paper feeder, 3 ... printing unit, 4 ... paper discharger, 10 ... paper, 10A, 10B ... stacking paper, 10a ... poor printing paper, 10b ... regular paper, 12 ... paper Detection sensor, 14: rotary encoder, 15: paper inspection camera, 19: discharge chain, 20: claw, 23: contact, 29
... abutment shaft, 33 ... air cylinder, 35 ... temporary paper receiving device, 36 ... paper receiving support shaft, 40 ... paper receiving member, 42 ... auxiliary paper receiving member, 47 ... air cylinder, 55 ... control device.

Claims (2)

[Claims] 1. A sheet discharge device for a printing press, which conveys a sheet whose quality has been inspected by a print quality inspection device and loads it on a pile, detects a defective print by the print quality inspection device. Then, based on the detection signal of the print quality inspection device, a sheet-like material receiving member that faces above the defectively printed sheet-like material stacked on the pile and temporarily supports the next normal sheet-like material. A sheet discharging device for a printing press, comprising: 2. A sheet discharging device for a printing press according to claim 1, wherein a counter for counting the number of defective sheets detected by the printing quality inspection device, and a counter counting the number of sheets. A sheet discharge device for a printing press, comprising: a display for displaying the number of sheets having defective printing.