JP2598351C - - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate making apparatus in which an original made in a plate making section is fed to a plate cylinder by a conveying means, and the plate cylinder is integrated. It relates to a rotary copying and printing device. 2. Description of the Related Art FIG. 1 shows a conventional apparatus, in which a stencil sheet 5 is gradually fed by a paper feed roller 3 while making a stencil in a stencil making section 2, the leading end of which is clamped on a plate cylinder 1, and a plate cylinder 1 1r. p. It is wound at a very low speed of about m. [0003] In the above-mentioned prior art, an interlocking mechanism such as a cam is generally connected to the plate cylinder, so that a load fluctuation during one rotation is large and uniform and accurate. It is difficult to obtain an ultra-low speed, and if rotation unevenness occurs, a load is applied to the base paper, resulting in a problem that the quality of plate making deteriorates and the base paper is damaged. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has an advantage in that a stencil sheet and a stencil sheet in which a stencil made in a stencil making section is fed to a plate cylinder by a conveying means are provided. In the integrated rotary transfer printing apparatus, a stencil feed roller and guide means for guiding the stencil paper vertically below the stencil conveyance direction are provided on the downstream side of the stencil making section, and are provided in the conveyance path in front of the plate cylinder. A base paper discharge roller, a means for inserting and clamping the leading end of the base paper into the clamp portion of the plate cylinder by driving the base paper discharge roller, and stopping the drive of the base paper discharge roller to hold the base paper with the base paper discharge roller; The feed roller is driven to form a predetermined slack of the base paper between the two rollers, and the plate cylinder is rotated while the leading end of the base paper is clamped by the clamp unit, and the driving is stopped from the base paper discharge roller. It is characterized in that the base paper is pulled out, the base paper discharge roller holding the base paper is twisted to apply tension to the base paper, and the plate cylinder is further rotated to wind the base paper around the plate cylinder peripheral surface. . FIG. 2 shows an embodiment of the present invention. A base paper feed roller 22 and a base paper discharge roller 23 having a one-way clutch are disposed in a base paper transfer path between the plate making section 20 and the plate cylinder 21, and a direction connecting the center of the base paper feed roller 22 is closer to the transfer path than a direction perpendicular to the horizontal direction. One end between the base paper feed roller 22 and the base paper discharge roller 23
An opening / closing guide plate 25 is provided so as to be pivotally connected to the side and to be able to rotate to the side of the conveyance path. Reference numeral 26 denotes a clamp portion of the plate cylinder 21. Reference numeral 27 denotes a clamp detection sensor that detects that the leading end of the base paper 28 has been inserted and clamped in the clamp portion 26.
Is detected, the clutch (not shown) connected to the base paper discharge roller 23 is disengaged,
The base paper discharge roller 23 is stopped. 29 is a base paper drive motor. When the driving of the base paper discharge roller 23 is stopped in response to the output of the detection means, and the driving of the base paper feed roller 22 is continued for a predetermined time, the base paper is discharged between the base paper discharge roller 23 and the base paper feed roller 22. Control means (not shown) for forming a slack, rotating the plate cylinder 21 while the base paper discharge roller is stopped after the predetermined time has elapsed, and winding up the slack base paper is provided. Next, the operation will be described. After the stencil 28 is made in the stencil making section 20, it is sent to the stencil feed roller 22 and proceeds further. At this time, the open / close guide plate 25 is closed at the horizontal position indicated by the solid line. The base paper 28 passes over the open / close guide plate 25, and the leading end thereof is inserted and clamped by the base paper discharge roller 23 into the clamp portion 26. This is detected by the clamp detection sensor 27, the clutch (not shown) connected to the base paper discharge roller 23 is disengaged, and the base paper discharge roller 23 stops. At the same time, the opening / closing guide plate 25
Is opened at the position of the two-dot chain line on the side of the conveyance path by a solenoid or the like. When the base paper feed roller 22 is driven for a predetermined time in this state, the base paper 28 forms slack on the side of the conveyance path as shown by a two-dot chain line. When the stencil making is completed after a lapse of a predetermined time, the stencil drive motor 29 stops, and the rotation of the stencil feed roller 22 stops. In this state, the plate cylinder 21 clamps the leading end of the base paper 28 to the clamp portion 26 and rotates in the direction of the arrow. At this time, since the base paper discharge roller 23 is holding the base paper slack in the stopped state, when the base paper discharge roller 28 is pulled out, the base paper discharge roller 23 rotates and is given an appropriate tension. It is smoothly pulled out from the base paper discharge roller 23 and wound around the plate cylinder 21. If the base paper feed roller 22 is disposed so as to feed the base paper 28 to the side of the conveying path, the slack to the side of the conveying path can be easily generated. According to the present invention, there is provided a plate making and printing apparatus in which a base plate made in a plate making section is fed to a plate cylinder by a conveying means, and printing is performed in one unit. A base paper feed roller and guide means for guiding the base paper in a direction perpendicular to the base paper transport direction are provided on the downstream side, and a base paper discharge roller is disposed in a transport path in front of the plate cylinder, and the base paper discharge roller Means for inserting and clamping the leading end of the base paper into the clamp portion of the plate cylinder by driving, stopping driving of the base paper discharge roller, nipping the base paper with the base paper discharge roller, driving the feed roller, and driving the feed roller to a predetermined position between the two rollers The slack of the base paper is formed, the plate cylinder is rotated while the leading end of the base paper is clamped by the clamp portion, and the slack base paper is pulled out from the base paper discharge roller whose driving is stopped, and the base paper is sandwiched. The base paper discharge roller is rotated to apply tension to the base paper, and further has means for winding the base paper around the peripheral surface of the plate cylinder by rotating the plate cylinder, so that the plate cylinder and the plate making unit are arranged close to each other. Even so, the platemaking base paper is sagged using the space between the two, so that the entire structure can be reduced in size with a simple configuration. It can be securely wound, and the whole device can be reduced in size and manufactured at low cost.

[Brief description of the drawings]     FIG.   It is a front view of the conventional 1st comparative example.     FIG. 2   1 is a front view of one embodiment of the present invention.     [Explanation of symbols]     20 Plate making department     21 plate cylinder     22 Base paper feed roller     23 Base paper discharge roller     26 Clamp section     28 base paper

Claims (1)

Claims: 1. A rotary printing machine in which a stencil made in a stencil making section is fed to a plate cylinder by a conveying means, and the stencil is integrated with a printing machine. Provided on the side is a base paper feed roller and guide means for guiding the base paper in a direction perpendicular to the base paper transport direction, a base paper discharge roller is arranged in the transport path in front of the plate cylinder, and the drive of the base paper discharge roller Means for inserting and clamping the leading end of the base paper into the clamp portion of the plate cylinder, stopping driving of the base paper discharge roller, nipping the base paper by the base paper discharge roller, driving the feed roller, and driving the predetermined base paper between the two rollers A slack is formed, the plate cylinder is rotated in a state where the leading end of the base paper is clamped by the clamp portion, and the slack base paper is pulled out from the base paper discharge roller that has stopped driving, and the base paper discharge holding the base paper is discharged. Applying tension to the sheet by about brought Ra, and further rotating the plate cylinder and means for winding the base paper on the plate cylinder peripheral surface rotary mimeograph printing device.