JPH07108677A - Device for winding plate material around plate cylinder of plate making/printing apparatus - Google Patents

Abstract

PURPOSE:To stably clamp a plate material to the outer periphery of a plate cylinder by automatically winding the plate material around the outer periphery of the plate cylinder. CONSTITUTION:The sprocket pins provided to the outer periphery of a plate cylinder 30 in two rows are successively inserted in the sprocket holes provided to a plate material in two rows by the rotation of the plate cylinder 30 to automatically wind the plate material around the outer periphery of the plate cylinder 30 and at least the terminal of the plate material is clamped by the plate material clamper 258 parallel to the axial direction of the plate cylinder 30 and, at this time, the almost central part in the longitudinal direction of the plate material clamper 258 is attracted by the magnet 260 embedded in the outer periphery of the plate cylinder 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for winding a plate material around a plate cylinder of a plate making and printing system, which is most suitable for application to an electronic gravure printing system.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Unexamined Patent Publication No. 2-1392.
As can be seen in Japanese Patent Publication No. 38-38, in an electronic gravure printing system, which is an example of intaglio printing, a sheet-like plate material having a thickness of about 200 μm (hereinafter, simply referred to as a plate material) formed of a thermoplastic resin such as polyethylene resin. Is described) is used.

In the plate making process by the plate making machine, the plate material is wound around the outer periphery of the plate cylinder and rotated at a high speed.
A laser beam of a semi-reflecting laser that is reciprocated in the axial direction of the plate cylinder is used to make (engrave) image data on the surface of the plate material based on unevenness such as photographs.

Next, in the printing process by the printing press, the plate material made in the previous plate making process is rewound around the outer periphery of the plate cylinder of the printing press. Then, while rotating the plate cylinder at high speed, ink is applied to the image data due to the unevenness of the plate material with an ink roll, and at the same time, the paper, which is the material to be printed, is pressed onto the surface of the plate material by the impression cylinder and sent at high speed. Then, images such as photographs are printed at high speed on the surface of paper or the like.

At this time, in the case of color printing, image data of a photograph or the like is made into a plate for each color such as cyan, magenta, yellow and black, and multicolor overprinting is performed with inks such as cyan, magenta, yellow and black. To do.

Further, according to the electronic gravure printing system, image data due to unevenness can be engraved on the surface of the plate material with high precision by a submicron order by the laser beam emitted from the semiconductor laser, so that an image such as a photograph can be formed. It is possible to print with extremely high accuracy.

By the way, in the conventional electronic gravure printing system, as shown in Japanese Patent Laid-Open No. 2-139238, the plate material is manually wound around the outer periphery of the plate cylinder and screwed.

[0008]

Therefore, the conventional electronic gravure printing system has a problem that the work of winding the plate material around the outer periphery of the plate cylinder is troublesome and the workability of plate making and printing is low.

Further, in the method of manually winding the plate material around the outer periphery of the plate cylinder with screws, positional deviation of the plate material with respect to the plate cylinder, wrinkles and the like are likely to occur, and image data such as photographs are printed in cyan and magenta. It is said that the compatibility of the plate material with the plate cylinder is low, such as color misregistration, color unevenness, image distortion, stains, etc. when making plates for each color such as yellow, black, etc. and performing multicolor overprinting. There was a problem.

The present invention has been made to solve the above-mentioned problems, and it is possible to automatically wind a plate material around the outer periphery of the plate cylinder and clamp the plate material on the outer periphery of the plate cylinder in a stable manner. It is an object of the present invention to provide a plate material winding device around a plate cylinder of a plate making and printing system that is made possible.

[0011]

In order to achieve the above object, a plate material winding apparatus for a plate making and printing system of the present invention for achieving the above object is a plate in which a sheet-like plate material is housed so as to be freely taken in and out. In the plate making device, which is equipped with a material jacket, pulls out the plate material from the plate material jacket and winds it around the outer periphery of the plate cylinder of the plate making machine or the printing machine, and the plate material winding device around the plate cylinder of the printing system. Two rows of sprocket holes are formed along the edge, and two rows of sprocket holes are provided along both ends of the outer periphery of the plate cylinder in the axial direction. Sequential insertion into the sprocket holes, wrap the plate material around the outer circumference of the plate cylinder, sprocket pins for unwinding the plate material by the reverse rotation of the plate cylinder, and the shaft of the plate cylinder on a part of the outer circumference of the plate cylinder. Installed parallel to the direction A plate material clamper that crimps and clamps at least the end of the plate material wound around the outer periphery of the plate cylinder to the outer periphery of the plate cylinder, and both ends in the length direction of the plate material clamper at both ends in the axial direction of the plate cylinder. A pair of right and left plate material clamper support mechanisms that rotatably support the plate material clamper, and a magnet that is embedded approximately at the center of the outer periphery of the plate cylinder in the axial direction and that attracts the plate material clamper at the center of the length direction. It is a thing.

[0012]

The plate winding device for the plate cylinder of the plate making and printing system of the present invention constructed as described above is provided along both axial ends of the plate cylinder by the normal rotation of the plate cylinder. By inserting the two rows of sprocket pins into the two rows of sprocket holes formed in the plate material, the plate material is pulled out from the plate material jacket and automatically wrapped around the outer periphery of the plate cylinder. You can Then, at least the end of the plate material wound around the plate cylinder is clamped so as to be crimped to the outer periphery of the plate cylinder by a plate material clamper provided on a part of the outer periphery of the plate cylinder in parallel with the axial direction of the plate cylinder. However, the plate material clamper can be attracted and fixed by a magnet embedded in the central portion of the plate material clamper in the lengthwise direction.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an electronic gravure printing system will be described below with reference to the drawings.

[Description of Sheet-Shaped Plate Material] First, a sheet-shaped plate material (hereinafter simply referred to as a plate material) will be described with reference to FIGS. 40 and 41.

The plate material 1 is a sheet having a thickness of about 200 μm, which is formed into a substantially rectangular shape with a thermoplastic resin such as polyethylene resin. Then, on the surface 1a of the plate material 1,
Image data 2 such as a photograph is highly accurately formed (engraved) in the substantially square region shown by hatching in a diagonal grid pattern in FIG. Then, sprocket holes 3 having a constant pitch are formed in parallel along the left and right sides of the plate material 1.

[Description of Plate Material Jacket] Next, the plate material jacket will be described with reference to FIGS. 40 and 41.

The plate material jacket 6 has a substantially rectangular shape and is formed in a flat bag shape in which three sides 6a, 6b and 6c are closed in a substantially U shape and a plate material inlet / outlet 7 is opened on one side 6d. There is.

At this time, a base sheet 8 and a cover sheet 9 having a thickness of about 200 μm, which are molded in a substantially rectangular shape with a thermoplastic resin such as polyethylene resin, are vertically overlapped with each other and these three sides 6a, This plate material jacket 6 is easily manufactured by heat-sealing 6b and 6c in a substantially U-shape with a predetermined width (pressing while heating to heat-bond the base sheet 8 and the cover sheet 9). can do.

The heat-sealed left and right side edges of the plate material jacket 6 are formed in a pair of left and right parallel roller press-bonding portions 10 each having a predetermined width.

Then, as shown in FIG. 6 (A), the cover sheet 9 of the plate material jacket 6 is upwardly extended along the inside of the three sides 6a, 6b, 6c which are heat-sealed in a substantially U shape. A horizontal top plate 9b is integrally formed via a substantially U-shaped rising portion 9a which is vertically raised, and the plate material 1 is provided between the top plate 9b of the cover sheet 9 and the base sheet 8. A flat and substantially U-shaped plate material storage space 11 having a height H ₁ that is equal to or greater than the thickness T ₁ is formed.

The plate material 1 is housed with its surface 1a facing upward in the plate material inlet / outlet 7 of the plate material jacket 6 into the plate material storage space 11 so that it can be freely inserted and removed in the directions of arrows a and a '. .

At this time, since the height H ₁ of the plate material storage space 11 can be made higher than the thickness T ₁ of the plate material 1 by the almost U-shaped rising portion 9a of the cover sheet 9, the plate material storage space The plate material 1 can be smoothly taken in and out of the plate material 11 in the directions of the arrows a and a '.

A notch 12 is formed from the center of the opening end 9c, which is the end of the cover sheet 9 on the plate material inlet / outlet 7 side, to both left and right ends, and the opening / closing lid is formed at substantially the center of the notch 12. 13 is integrally molded.

Then, as shown in FIGS. 4 and 5B, this opening / closing lid 13 is provided with a long hole-like opening / closing lid locking hole formed in the central portion of the base sheet 8 in the vicinity of the opening end 8a. By inserting and locking the inside of the plate material 14 to block the plate material inlet / outlet 7 of the plate material jacket 6, the plate material 1 stored inside is locked in the stored state (to prevent the plate material 1 from jumping out). I am trying to do it.

A pair of left and right slits 15 cut in parallel from the open end 9c side of the cover sheet 9 are formed on both left and right sides of the plate material inlet / outlet 7 of the cover sheet 9, and the open end of the cover sheet 9 is formed. 9a is configured so that it can be easily opened and closed in the directions of arrows b and b'over the entire width along the fold line connecting the deepest portions 15a of the pair of left and right slits 15.

Then, on both the left and right sides of the plate material inlet / outlet 7, from the deepest portion 15a of the pair of left and right slits 15 to the rising portions 9a on both the left and right sides, there is a constriction toward the plate material insertion direction (arrow a'direction). A pair of left and right tapered portions 17 for guiding the plate material insertion are integrally formed.

Therefore, the plate material inlet / outlet 7 of the plate material jacket 6
When the plate material 1 is inserted into the plate material storage space 11 from the direction of the arrow a ′, the left and right ends of the plate material 1 can be guided by the pair of left and right tapered portions 17, so that the plate material storage space 11 The inserting operation of the plate material 1 in the direction of the arrow a ′ can be smoothly performed.

The plate material inlet / outlet 7 of the plate material jacket 6
The pair of left and right roller crimping parts 10 are biased to the side.
Further, a pair of left and right jacket fixing holes 18 is formed to vertically penetrate the base sheet 8 and the cover sheet 9.

The plate material inlet / outlet 7 of the plate material jacket 6
A pair of left and right sides vertically penetrating the top plate 9b and the base sheet 8 of the cover sheet 9 at positions just above and below the sprocket holes 3 on both the left and right sides of the plate material 1 stored inside at a position biased to the side. The slotted sprocket insertion hole 19 is formed.

The plate material inlet / outlet 7 of the plate material jacket 6
At a position asymmetrical with respect to the center in the horizontal direction in the vicinity of the
The erroneous loading (erroneous insertion) detection holes 21 and 22 forming the detected portion of the erroneous loading (erroneous insertion) detecting means are formed. One erroneous loading (erroneous insertion) detection hole 21 is formed in the lateral vicinity of the opening / closing lid 13, and the other erroneous loading (erroneous insertion) detection hole 21 is formed.
The detection hole 22 is arranged on the center of one sprocket hole 3 of the plate material 1.

A bar for identifying the type of the plate material 1 accommodated in the plate material jacket 6 (identifying whether or not the plate material is a new plate material, what image data 2 and what color was used for plate making). The code label 23 is the cover sheet 9 of the plate jacket 6.
It is attached to the best. It should be noted that the cover sheet 9 of the plate material jacket 6 is provided with a visual inspection hole 24 for visually identifying the type of the plate material 1 as needed.

[Explanation of plate making and printing system] Next, referring to FIG.
2 and FIG. 43, a plate making and printing system will be described.

In this plate making and printing system, first, the plate making machine 27 makes (engraves) the image data 2 on the surface 1a of the plate material 1 of 1 to 4 by the unevenness of a photograph or the like. However, at this time, the image data 2 for each color such as cyan, magenta, yellow, and black is separately prepared on one to four plate materials 1.

Next, the 1 to 4 plate materials 1 thus prepared are supplied to the printing machine 37, and the cut paper 47 is formed on the surface 1a of the 1 to 4 plate materials 1 by the image data 2 for each color. Overprinting is performed 1 to 4 times to perform color printing in which 1 to 4 colors of a photograph or the like are combined.

In this plate making and printing system, consistently before plate making, after plate making, before printing and after printing,
By storing the plate material 1 in the plate material jacket 6 and handling it, adhesion of dust or the like to the surface 1a of the plate material 1 and generation of scratches are prevented.

[Outline of Plate Making Machine] As shown in FIG. 42, the plate making machine 27 is provided with a jacket loading table 28 and a plate material feeding / discharging device 29 disposed above the jacket loading table 28. Inside the plate making machine 27, the plate cylinder 30 for plate making is provided.
And the surface 1 of the plate material wrapped around the outer periphery of the plate cylinder 30.
a is a laser beam LB emitted from the semiconductor laser 31.
A laser block 34 for irradiating the light through the collimator lens 32 and the objective lens 33 is arranged. And
The laser block 34 is configured to reciprocate in the axial direction of the plate cylinder 30 [a direction perpendicular to the paper surface of FIG. 42B].

[Outline of Printing Machine] As shown in FIG. 43, the printing machine 37 has one to four jacket loading tables 38 for loading one to four printing material jackets 6 and a printing material feeding / discharging device. A device 39 is provided, and as many printing cylinders 4 as the jacket loading tables 38 are provided in the printing machine 37.
0, impression cylinder 41 and ink pan 42, ink roll 43,
An inking unit 45 for each color, which includes a doctor blade 44 and the like, is arranged. It should be noted that four to four ink inks 42 of four colors such as cyan, magenta, yellow, and black are supplied for each color into the one to four ink pans 42. Then, in the printing machine 37, the cut paper 4 which is the printing target
A cut sheet tray 48 on which 7 sheets are stacked is provided, and a cut sheet circulating device (not shown) for sequentially circulating the cut sheets 47 to the one to four impression cylinders 41 is provided inside. Note that FIG. 43 (A) shows a state in which two sets of the jacket loading table 38, the plate material feeding / discharging device 39, the plate cylinder 40, the impression cylinder 41, and the ink unit 45 are installed.

[Explanation of plate making process] As shown in FIG. 42A, the plate material jacket 6 in which the plate material 1 before plate making is housed is placed on the jacket loading table 28 of the plate making machine 27 in the direction of arrow a. Load horizontally from. Then, the plate material feeding / discharging device 29 causes the plate material 1 to move from inside the plate material jacket 6 to the arrow a.
The plate cylinder 30 in the plate making machine 27 is automatically pulled out in the direction
42B is automatically wrapped around the outer periphery of the.

Therefore, as shown in FIG. 42B, the surface 1a of the plate material 1 is irradiated with the laser beam LB by the semiconductor laser 31 while the plate cylinder 30 is rotating the plate material 1 in the direction of arrow c at a high speed. At the same time, the laser block 34 is reciprocated in the axial direction of the plate cylinder 30, and the image data 2 for each color such as a photograph is directly and accurately formed on the surface 1a of the plate material 1 by the laser beam LB by the unevenness of the submicron order. The so-called direct plate making with engraving is sequentially performed on 1 to 4 plate materials 1.

At this time, a photo scanner or a digital VTR
Digital information of images such as photographs taken from multimedia such as electronically edited by an image processing computer etc.,
Obtain digital information of four colors such as cyan, magenta, yellow, and black. Then, the semiconductor laser 31 is driven by a laser drive circuit based on the digital information for each of the four colors while sequentially exchanging 1 to 4 plate materials 1, and 1
Directly plate-making the image data 2 for each of the four colors on the four plate materials 1 separately.

Then, the plate material 1 which has been plate-made is automatically sent back from the outer periphery of the plate cylinder 30 in the direction of arrow a'by the plate material feeding / discharging device 29 and is stored again in the plate material jacket 6 to perform the plate-making process. finish. After that, the plate material jacket 6 is pulled out from the jacket loading table 28 in the direction of arrow a ′ and loaded into the next printing machine 37.

[Explanation of Printing Process] As shown in FIG. 43 (A), 1 to 4 plate material jackets in which plate plates 1 of different colors which have been plate-made in the plate-making process are stored. 6 are horizontally loaded on the 1 to 4 jacket loading tables 38 of the printing machine 37 from the direction of arrow a. Then, each plate material 1 is automatically pulled out from each plate material jacket 6 in the direction of the arrow a by each plate material feeding / discharging device 39 to the outer periphery of one to four plate cylinders 40 in the printing machine 27. It is automatically wound as shown in FIG. 43 (B).

Therefore, the cut sheets 47 in the cut sheet tray 48 shown in FIG. 43 (A) are supplied to one to four impression cylinders 41 so as to be circulated in sequence, and shown in FIG. 43 (B). Print like this.

That is, while rotating each plate cylinder 40 at high speed in the direction of arrow d, each ink roll 43 brought into contact with the surface of each plate material 1 is rotated at high speed in the direction of arrow e in synchronization with each plate cylinder 40. Then, the water-based ink 46 for each color in the ink pan 42 is applied to the unevenness of the image data 2 for each color of each plate 1, and the unnecessary ink 46 is scraped off by each doctor blade 44. Then, the cut paper 47 is moved to each plate material 1 by each impression cylinder 41 which is rotated at a high speed in the direction of arrow f in synchronization with each plate cylinder 40.
The image 4 for each color is sequentially printed at high speed on the cut paper 47 by the image data 2 for each color such as a photograph of each plate material 1 while being pressed against the surface 1a of the sheet.

Then, the cut paper 47 is attached to one to four impression cylinders 4
1 by sequentially circulating the image data 2 for each color of the plate material 1 by color,
It is possible to print one color printed matter on which the image 4 such as a color photograph in which four colors such as cyan, magenta, yellow, and black are combined is printed. However, one-color printing, two-color printing, three-color printing, and printing of four or more colors are also possible,
The number of plate making steps and the number of printing steps increase or decrease according to the number of colors to be printed.

[General Description of Plate Material Feeding / Discharging Device] First, the jacket loading tables 28, 38, the plate material feeding / discharging devices 29, 39 and the plate cylinders 30, 4 of the plate making machine 27 and the printing machine 37 described above.
0 has the same structure. Therefore, an outline of the jacket loading table 28, the plate material feeding / discharging device 29, and the plate cylinder 30 of the plate making machine 27 will be described with reference to FIGS. 44 to 46.

First, the horizontal jacket loading table 28
The table cover 51 is horizontally loaded on the upper part of the
A horizontal jacket loading space 52 formed between them
Inside the jacket loading table 28, the plate material jacket 6
Is configured to be horizontally loaded (inserted) in the direction of arrow a with the plate material inlet / outlet 7 side facing forward. The left and right side guides 5 for guiding the left and right sides of the plate material jacket 6 in parallel are provided on the left and right sides of the table cover 51.
3 is integrally formed.

The plate material supplying / discharging device 29 is installed on the table cover 51 of the jacket loading table 28. The plate material supplying / discharging device 29 has a pair of left and right symmetrical jackets and plate material drawing-in devices. A device 55 and a jacket fixing device 56, and a jacket central and both side lid opening device 57 are provided.

Then, the drive shaft 5 is placed on the table cover 51.
8, the cam shaft 59, the sprocket shaft 60, and the like are arranged in a state of horizontally traversing the table cover 51 in the left-right direction via a pair of left and right brackets 61 and the like. Further, on the table cover 51, a motor 62 and a gear train 63 for driving the drive shaft 58 in forward and reverse directions and a motor 64 and a gear train 65 for driving the cam shaft 59 in forward and reverse directions are attached. The left and right end portions of the cam shaft 59 have three pairs of left and right cam mechanisms 66, 67, 68 in total.
The cam mechanism 69 is also attached to the center of the cam shaft 59.

The pair of left and right jacket and plate material retracting devices 55 are driven by the motor 62 to rotate forward and backward, and the cam mechanism 6 driven by the motor 64.
6 has a pair of left and right drive rollers 77 and a sprocket 82 attached to a roller shaft 78 and a sprocket shaft 60 that are reversibly driven up and down (seesaw movement) around a drive shaft 58 by a pair 6. The driving roller 77 is attached to the lower part of the jacket loading table 28 by a roller shaft 80 and is pressure-bonded to and separated from the upper parts of a pair of left and right pinch rollers 79 which are rotationally driven at a fixed position.

Also, a pair of left and right jacket fixing devices 56
Has a pair of left and right vertical fixing pins 96 that are vertically moved up and down by a cam mechanism 67 driven by a motor 64.

The cover opening device 5 at the center and both sides of the jacket
Reference numeral 7 denotes a central and both-sided open suction pad 117 which is rotationally driven in the up and down directions of arrows b and b'by a cam mechanism 68 driven by a motor 64, and a central and both-side fixed suction pad fixed to a fixed position. 121 and 121. The suction pads 117 and 121 are vacuum suction pads connected to a vacuum pump (not shown).

Then, it is a detecting means constituting a controller for controlling the jacket and plate material drawing-in device 55, the jacket fixing device 56, the jacket center and the left and right both side lid opening devices 57 so as to operate sequentially based on a sequence. A plurality of sensors S _{1 to} S ₈ are provided. It should be noted that the sensors S _{1 to} S ₆ respectively include a light emitting element LD and a light receiving element PD that detect light so as to vertically penetrate the jacket loading table 28 and the table cover 51, respectively.
It consists of an optical sensor. The sensors S ₇ and S ₈ are composed of photocouplers that detect a pair of slit discs 70 fixed to the outer circumferences of the left and right ends of the cam shaft 59. Further, a pair of left and right jacket stoppers 71 are provided on both left and right sides of the end portion of the jacket loading table 28 on the arrow a direction side.

[A series of plate feeding operations of the plate material feeding / discharging device] First,
Before the start of plate feeding, the cam mechanisms 66 to 69 are set to a cam angle of 0 °.

Next, as shown in FIGS. 44 to 46, the operator manually puts the plate material jacket 6 into the jacket loading space 52 between the jacket loading table 28 and the table cover 51 from the plate material inlet / outlet 7 side. When horizontally loaded (inserted) from the direction of the arrow g, the insertion of the plate jacket 6 is detected by the sensors S ₁ and S ₂ .

When the plate material jacket 6 passes between the pair of left and right drive rollers 77 and the pinch roller 79,
Based on the detection of the sensor S ₂ , the motor 64 is driven to rotate in the normal direction, and the cam mechanisms 66 to 69 move the cam angles from 0 ° to 18 °.
It is set to 0 °.

Then, as shown by the one-dot chain line in FIG.
The pair of left and right drive rollers 77 are pressed against the pair of left and right roller pressing portions 10 of the plate material jacket 6,
The pair of left and right sprockets 82 and the fixing pin 96 that hinder the insertion of the are retracted above the jacket loading space 52.

Next, the motor 62 is driven to rotate in the forward direction, the pair of left and right driving rollers 77 are driven to rotate counterclockwise in FIG. 45, and the plate jacket 6 is loaded in the jacket loading space 52.
It is automatically pulled in in the direction of arrow a.

The left and right ends of the opening end 8a of the base sheet 8 of the plate material jacket 6 pulled in the direction of the arrow a are brought into contact with the pair of left and right jacket stoppers 71 and stopped at a fixed position.

The completion of automatic drawing of the plate material jacket 6 to a predetermined position and the parallelism of the plate material jacket 6 with the pair of left and right jacket stoppers 71 are detected by the sensor S.
_3, when detected by S _4, automatically stop the motor 62.

At this time, during the automatic withdrawal of the plate material jacket 6, the presence or absence of the erroneous loading (erroneous insertion) detection hole 21 formed in the plate material jacket 6 at the asymmetrical position should be detected by the sensor S _5. By this, it is possible to detect erroneous loading (erroneous insertion) on the front and back sides of the plate material jacket 6 and before and after. In the case of erroneous loading (erroneous insertion), the pair of left and right drive rollers 77 are immediately reverse-rotated to automatically eject the plate material jacket 6 in the direction of arrow a ', or erroneous loading (erroneous insertion). Notify operators by displaying such things.

After the automatic drawing of the plate material jacket 6 to a fixed position is completed, the vacuum pump is operated and the motor 64 is driven to rotate in the reverse direction so as to change the cam mechanisms 66 to 69 from the cam angle of 180 ° to 0 °. .

Then, the center and both sides of the cover opening device 57 at the center of the jacket and both sides of the lid opening device 57 are rotated in the downward direction of arrow b ', and the center and both sides of the opening end 9c of the cover sheet 9 of the plate jacket 6 are opened. In addition to being vacuum-adsorbed on the upper side, the center and both sides of the open end 8a of the base sheet 8 of the plate material jacket 6 are vacuum-adsorbed on the central and both-side fixed adsorption pads 121. Then, subsequently, the central and both side suction pads 117 are rotated in the upward arrow b direction, the open end 9c of the cover sheet 9 is lifted upward, and the plate material inlet / outlet 7 of the plate material jacket 6 is opened. (Opened).

A pair of left and right jacket fixing devices 5
41, a pair of right and left fixing pins 96 are vertically lowered and inserted into a pair of left and right jacket fixing holes 18 of the plate material jacket 6 to keep the plate material jacket 6 at a fixed position. Fixed.

The pair of left and right jackets and the pair of left and right sprockets 82 of the plate material retracting device 55 are shown in FIG.
As indicated by the one-dot chain line, the sprocket insertion holes 19 on both the left and right sides of the plate material jacket 6 are inserted to engage with the sprocket holes 3 on both the left and right sides of the plate material 1.

Next, the motor 62 is driven to rotate in the forward direction again, and the pair of left and right sprockets 82 are driven to rotate counterclockwise in FIG. 45. The left and right of the plate material 1 in the plate material jacket 6 are driven by these sprockets 82. The sprocket holes 3 on both sides are driven in the arrow direction, and the plate material 1 is automatically pulled out from the plate material jacket 6 in the arrow a direction.

At this time, by counting the number of sprocket holes 3 by the sensor S ₆ , the amount of drawing of the plate material 1 in the direction of arrow a can be detected. In addition,
The sensor S ₆ can detect the erroneous loading (erroneous insertion) detection hole 22 of the plate jacket 6.

When the plate material 1 is pulled out from the plate material jacket 6 to a predetermined position in the direction of the arrow a, the plate cylinder 30 is rotationally driven in the direction of the arrow, and the outer circumference of both ends of the plate cylinder 30 in the axial direction is reached. The sprocket pins 30a provided are engaged with the sprocket holes 3 on both the left and right sides of the plate material 1,
5 and the dotted line in FIG. 46, the plate material 1 is automatically wound around the outer periphery of the plate cylinder 30. Finally, the plate material 1 is completely pulled out from the plate material jacket 6 and wound around the outer periphery of the plate cylinder 30.

[Series of plate discharge operation of plate material feeding / discharging device] During plate discharge, the vacuum pump is operated, the cam mechanisms 66 to 69 are set to a cam angle of 0 °, and the plate material is fixed in the jacket loading space 52. The cover sheet 9 of the jacket 6 is opened, and the plate material inlet / outlet 7 is kept waiting in a state of being opened over the entire width.

Then, the plate material 1 is automatically sent back from the plate cylinder 30 through the plate material inlet / outlet 7 of the plate material jacket 6 in the direction of arrow a '. At this time, the motor 62 is driven in the reverse rotation to drive the pair of left and right sprockets 82 in the reverse rotation, so that the pair of left and right sprockets 82 drives the sprocket holes 3 on both the left and right sides of the plate material 1, and the plate material 1 It is automatically sent back into the jacket 6 in the direction of arrow a '.

At this time, the plate material 1 is made by the pair of left and right taper portions 17 of the plate material jacket 6 shown in FIGS.
The plate material 1 can be smoothly inserted into the plate material jacket 6 from the direction of the arrow a ′ and stored by guiding the left and right ends of the plate material.

When the plate material 1 is completely stored (sent back) in the plate material jacket 6, the sensor S ₅ detects it and the motor 62 is automatically stopped. Then, next, the motor 64 is driven to rotate in the forward direction to move the cam mechanisms 66 to 69 to a cam angle of 180 °.
The pair of left and right drive rollers 77 are pressed against the plate material jacket 6, and the pair of left and right fixing pins 96 and the sprocket 82 are retracted above the plate material jacket 6.

Therefore, the motor 62 is driven in the reverse direction, and the plate material jacket 6 is automatically discharged from the inside of the jacket loading space 52 in the direction of arrow a'by a certain amount by the pair of left and right driving rollers 77. Then, the completion of the discharge of the plate material jacket 6 in the direction of the arrow g'is detected by the sensor S ₂ , and the motor 62 is automatically stopped.

After that, when the operator manually pulls out the plate jacket 6 from the jacket loading space 52 in the direction of the arrow a ', it is detected by the sensor S ₅ and the motor 64 causes the cam mechanisms 66 to 69 to cam again. The angle is set to 0 ° and the plate feeding returns to the initial state. At this time, the sensor S ₁
Until the sheet material manual discharge of the plate material jacket 6 is detected, even if the plate material jacket 6 is manually inserted again in the direction of the arrow a, the automatic plate feeding described above is not performed.

As described above, in this electronic gravure printing system, the operator does not touch the plate material 1 at all,
Since the system can be operated, adhesion of dust or the like to the surface 1a of the plate material 1 on which the image data 2 is formed and scratches can be prevented, and a stable printed material can be obtained. . By developing this system, it is possible to easily realize an electronic gravure printing system capable of unmanned operation.

[Explanation of Plate Material Wrapping Device on Plate Cylinder] First, the plate cylinders 30 and 4 of the plate making machine 27 and the printing machine 37 described above.
The winding device of the plate material 1 with respect to 0 has the same structure. Therefore, the plate material winding device 251 of the plate making machine 27
This will be described with reference to FIGS. 1 to 39.

[Description of Plate Cylinder Drive Mechanism] First, the drive mechanism 229 of the plate cylinder 30 will be described with reference to FIGS. 20, 38 and 39.

A pair of left and right plate cylinder support frames 253 are vertically attached to the upper part of the chassis 252 with a space therebetween, and the plate cylinder 30 is horizontally arranged between these plate cylinder support frames 253. Both ends in the axial direction (horizontal direction) of the horizontal rotary shaft 30b fixed to the center of the plate cylinder 30 are rotatably attached to the pair of left and right plate cylinder support frames 253 via a pair of left and right bearings (not shown). It is supported. The above-mentioned jacket loading table 28 is horizontally installed between the pair of left and right plate cylinder support frames 253, and the tip of the jacket loading table 28 in the direction of arrow a is close to the upper part of the plate cylinder 30.

The plate cylinder drive mechanism 229 is used for the chassis 2
A drive motor 230, which is a plate cylinder rotation drive means, mounted on the rotary shaft 52 of the rotary shaft 30 via a belt transmission mechanism 231.
It is connected to one end of b. And the rotating shaft 30b
A rotary encoder 232, which is a plate cylinder position detecting means directly connected to the other end of the plate cylinder, is attached to the side surface of one plate cylinder support frame 253.

Therefore, the plate cylinder 30 is freely rotated in the forward and reverse directions in the directions of arrows c and c'by the drive motor 230, and the rotary encoder 232 drives the arrow c and arrow of the plate cylinder 30.
Position detection in the c'direction is performed, and the plate cylinder 30 is stopped at a designated position.

Two rows of sprocket pins 30a having the same pitch and the same pitch are provided along both ends of the outer periphery of the plate cylinder 30 in the axial direction (left-right direction).

Then, a plate material winding device 251 described later.
Are attached between the pair of left and right plate cylinder support frames 253. Then, at the time of plate feeding, as shown in FIG. 38, the plate material 1 automatically drawn in the direction of arrow a from the plate material feeding / discharging device 29 described above from inside the plate material jacket 6 loaded on the jacket loading table 28. However, as shown in FIG. 39, the two rows of sprocket pins 30a of the plate cylinder 30 are automatically wound around the outer periphery of the plate cylinder 30 in the direction of arrow c as described later.

After winding the plate material, as shown in FIG. 39, while rotating the plate cylinder 30 at a high speed in the direction of arrow c, the laser beam is directed onto the surface of the plate material 1 by the laser block 34 as described above. While irradiating, the laser block 34 is horizontally reciprocated in the directions of the arrows s and s ′ along the axial direction of the plate cylinder 30 to perform the plate making process.

The laser block moving mechanism 233 is
The laser block moving table 224, to which the laser block 34 is attached, is guided between a pair of sliding guides 225 parallel to the axial direction of the plate cylinder 30, and the laser block is moved by a feed screw 227 that is normally and reversely driven by a drive motor 226. The table 224 is moved in the directions of arrows s and s'. A rotary encoder 228 for detecting the position of the laser block 34 in the directions of arrows s and s'is directly connected to the other end of the feed screw 227.

Then, at the time of discharging the plate after the plate making, as will be described later, the plate material 1 is automatically unwound from the outer periphery of the plate cylinder 30 in the direction of arrow c ', and is automatically set in the plate material jacket 6 in the direction of arrow a'. Send it in.

[Detailed Description of Plate Material Wrapping Device] The details of the plate material winding device 251 will be described below in order.

[Relationship Between Sprocket Pins and Sprocket Holes] First, as shown in FIGS. 1 to 5, two rows of sprocket pins are provided at a constant pitch along both axial ends of the outer periphery of the plate cylinder 30. 30a is, for example, 1 at 30 ° intervals.
Two are provided for each. Then, as shown by black circles in FIG. 5A, two sprocket holes 3 are formed in two rows along the left and right edges of the plate material 1 on the two-row sprocket pins 30 a of the plate cylinder 30. It is configured so that it is inserted everywhere and the plate material 1 is wrapped around the outer periphery of the plate cylinder 30 at an angle of 360 ° + α.

[Relationship Between Pitch and Span of Sprocket Pins and Sprocket Holes] As shown in FIG. 5, the pitch P _{1 in the} circumferential direction of the plate cylinder of the two rows of sprocket pins 30a on the outer periphery of the plate cylinder 30 and the plate cylinder Spans P _{2 in the} axial direction are inserted into the two rows of sprocket pins 30 a every two rows of the sprocket holes 3 of the plate material 1 in two rows, that is, the engagement pitch P ₃ and It is formed slightly larger (about 0.01 to 0.03 mm) than the engagement span P ₄ .

[Shape of Sprocket Pin] Next, as shown in FIG. 7, each sprocket pin 30a has a true cylindrical surface 30a ₁ formed at the base thereof and a taper formed on the true cylindrical surface 30a _1. The surface 30a ₂ and its tapered surface 30
It is formed by a rounded surface (R surface) 30a ₃ formed on the top of a ₂ . Each sprocket hole 3 is configured to be press-fitted to the outer periphery of the true cylindrical surface 30a ₁ of each sprocket pin 30a.

[Relationship between press-fitting margin of sprocket pin and sprocket hole] As shown in FIGS. 5 and 6, with respect to the sprocket pin 30a arranged along the reference position P ₅ on one end side of the plate cylinder 30 in the axial direction. The press-fitting margin of the sprocket hole 3 along one end side of the plate material 1 is increased, and the plate material 1 other than the sprocket pin 30a arranged along the non-reference position P ₆ on the other end side of the plate cylinder 30 in the axial direction is The press-fitting margin of the sprocket hole 3 along the end side is reduced.

That is, the sprocket pin 30a shown in FIG.
The diameter D ₁ of the true cylindrical surface 30a ₁ which is the root of is set to 0 mm for the upper limit and 0.009 mm for the lower limit with respect to 4 mm for all the two-row sprocket pins 30a.
On the other hand, in the diameter D ₂ of the two-row sprocket holes 3, the upper limit is set to 0.03 mm and the lower limit is set to 0.07 mm with respect to 4 mm on the reference position P ₅ side, and 4 on the non-reference line position P ₆ side.
The upper limit is set to 0 mm and the lower limit is set to 0.02 mm with respect to mm.

[Description of Reference Position of Plate Cylinder] Next, as shown in FIGS.
It is arranged on a horizontal tangent to the top of the outer periphery of 0, and the vertical position connecting the intersection of the tangent and the top and the center of rotation of the plate cylinder 30 is the press-fitting position P of each sprocket hole 3 into each sprocket pin 30a. _It is set to ₁₁ . Then, about 1 from the press-fitting completion position P ₁₁ toward the arrow c ′ side.
The position retracted by 5 ° is the reference position P in the circumferential direction of the plate cylinder 30.
_It is set to ₁₂ , and about 30 from the press-fitting position P ₁₁ toward the arrow c direction.
The advanced position is set to the plate material ramp position P ₁₃ .

[Description of Main Parts of Plate Material Wrapping Device] Next, the plate material winding device 251 includes a pair of right and left plate material pressing plates 25 which also serve as plate material scooping means and plate material pressing means.
6, a pair of right and left plate material press-fitting rollers 257 forming plate material press-fitting means, a plate material clamper 258, a pair of left and right lock pins 259 forming clamper control means, a magnet 260 for attracting the plate material clamper 258, and a plate material. Guide 26
1 etc. are used.

[Description of Plate Pressing Plate Driving Device] Next, referring to FIG.
1 to 16, the driving device 26 for the plate pressing plate 256
4 will be described.

First, as shown in FIG. 11, the pair of left and right plate material pressing plates 256 are located inside the pair of left and right plate cylinder support frames 253 and above the reference position P ₁₂ with respect to the two rows of sprocket pins 30a of the plate cylinder 30. They are arranged symmetrically in position. A pair of left and right plate material pressing plate driving devices 264 that drive the pair of left and right plate material pressing plates 256 are symmetrically attached to the outside of the pair of left and right plate cylinder support frames 253.

Each plate material pressing plate 256 is made of synthetic resin and has a forked arm 25 having elasticity.
6a, and a split groove 256b opened in the direction of the arrow a is formed in the center thereof. Then, the base portion of each plate material pressing plate 256 is inserted into each plate cylinder support frame 253 through the obliquely formed long hole 265, and each plate cylinder support frame 253 is inserted.
Of the plate cylinder 253, and is fixed to each support plate 266 arranged outside each plate cylinder support frame 253.

Then, each support plate 266 is guided by a total of four guide rollers 267 attached to the outside of each plate cylinder support frame 253, so that each plate material pressing plate 256 is inclined with respect to the reference position P ₁₂ . It is configured to be moved in the up and down directions of arrows c ₁ and c ₁ ′.

Then, each plate material pressing plate drive device 264 is
Drive motor 268 attached to bracket 268a
Worm 27 directly connected to the via a coupling 269
0, a worm wheel 271 meshed therewith, and a pinion 273 directly connected to the worm wheel 271 via an intermediate gear 272.
The rack 274 meshed with the rack 274 and fixed to the support plate 266, the shutter plate 275 fixed to the side surface of the rack 274, and the shutter plate 275
It has a pair of sensors S ₉ and S ₁₀ each consisting of a photo coupler that is turned off and on.

When the drive motor 268 is driven to rotate in the normal direction, each plate material pressing plate 256 is integrated with the supporting plate 266 through the worm 270, the worm wheel 271, the intermediate gear, the pinion 273 and the rack 274 as shown in FIG. Figure 15
Is moved to the operating position indicated by the solid line in FIG.
Sensor S ₉ detects the movement of the
8 is configured to be automatically stopped.

When the drive motor 268 is driven to rotate in the reverse direction, on the contrary, each plate material pressing plate 256 is moved to the non-operating position shown by the alternate long and short dash line in FIGS. The other sensor S ₁₀ detects the movement and the drive motor 268 is automatically stopped.

[Description of Plate Material Press-In Roller Driving Device] Next,
A drive device 278 for the plate material press-fitting roller 257 will be described with reference to FIGS. 11 to 13 and FIGS. 17 to 19.

First, the pair of right and left plate material press-fitting rollers 257 are made of synthetic resin, and a central annular groove 257a is formed along the central portion of the outer circumference. The pair of left and right plate material press-fitting rollers 257 are symmetrically arranged inside the pair of left and right plate cylinder support frames 253 and above the press-fitting positions P ₁ of the two rows of sprocket pins 30a of the plate cylinder 30. There is. A pair of left and right plate material press-fitting roller driving devices 278 that drive the pair of right and left plate material press-fitting rollers 257 are provided with a pair of left and right plate cylinder support frames 253.
It is attached symmetrically inside the.

Each plate material press-fitting roller driving device 278
Is a fulcrum shaft 279 that is horizontally fixed to each plate cylinder support frame 253, and is rotatably attached around the fulcrum shaft 279, and each plate material press-fitting roller 257 is rotatably attached to the leading end of the support arm. 280 and the same fulcrum shaft 27
Drive arm 281 attached so as to be rotatable around 9
And a limiter spring 282 composed of a tension spring mounted between the support arm 280 and the drive arm 281.
A plunger solenoid 283, which is fixed to the plate cylinder support frame 253 and drives the drive arm 281 by the plunger 283a, a return spring 284 for the plunger 283a which is a tension spring, and a stopper 285 for the drive arm 281. And the drive arm 281
It has a micro switch S ₁₁ that is turned on and off by the switch. The plunger 283a and the drive arm 281 are connected by a pin 283a, and the stopper 285 is the bracket 2 of the plunger solenoid 283.
It is integrally formed with 83c.

When the plunger solenoid 283 is OFF, the drive arm 281 is rotated by the return spring 284 in the direction of arrow c ₂ ′ and brought into contact with the stopper 285, as shown by the alternate long and short dash line in FIG. Two
81 and the support arm 280, the support arm 280 is rotated in the direction of the arrow c ₃ ′ by the mutual contact portions 281 a and 280 a formed in the plate material press-fitting roller 257.
And arrow c to the press-fitting release position indicated by the alternate long and short dash line in FIG.
₃ 'is raised in the direction, and is configured to microswitch S ₁₁ is OFF.

When the plunger solenoid 283 is turned on, the driving arm 281 causes the return spring 284 to move by the plunger 283a as shown by the solid line in FIG.
Is rotated in the direction of arrow c ₂ against the
The support arm 280 is rotationally driven in the direction of arrow c ₃ via 2. The plate material press-fitting roller 257 is shown in FIG.
8 to the press-fitting position indicated by the solid line in the direction of arrow c _{3, and is} pressed against the outer periphery of the plate cylinder 30 from the direction of arrow c ₃ by the elastic pressing force of the limiter spring 282, which is an elastic pressing means, and is microswitched by the drive arm 281. It is configured so that S ₁₁ is turned on.

[Description of Plate Material Clamper Supporting Mechanism] Next,
The support mechanism 288 of the plate material clamper 258 will be described with reference to FIGS. 1 to 4 and 21 to 33.

First, as shown in FIGS. 20 to 22, the plate material clamper 258 is a strip plate made of a ferromagnetic material such as an iron plate, and the entire length of the plate material clamper 258 is the plate cylinder 30.
Is formed to be slightly larger than the entire length in the axial direction of. The plate material clamper 258 is curved in an arc shape along the outer periphery of the plate cylinder 30 along a direction perpendicular to the length direction. The plate material clamper 258 is configured to be pressure-bonded to and separated from a part of the outer periphery of the plate cylinder 30 by a pair of left and right plate material support mechanisms 288 in parallel with the axial direction of the plate cylinder 30.

Next, as shown in FIGS. 1 to 4 and 21 to 33, a pair of left and right plate material clamper supporting mechanisms 288 are attached to both sides of the plate cylinder 30 in the axial direction in a symmetrical manner. Each plate material support mechanism 288 includes a rotary support base 290 rotatably attached to the outer periphery of the left and right ends of the rotary shaft 30 b of the plate cylinder 30 via bearings 289, and a pair of guides on the side surfaces of the rotary support base 290. It is attached via a screw 291 also serving as a pin and an elongated hole 292, and is slidable in the directions of arrows c ₄ and c ₄ ′ which are directions orthogonal to the axial direction of the plate cylinder 30 with respect to the rotary support 290. It has a constructed clamper support plate 293 and the like.

A pair of left and right bending pieces 258a are bent at right angles toward the center of the plate cylinder 30 at both ends in the length direction of the plate material clamper 258. Then, the plate material clamper 258 is displaced from the center P ₁₄ in the circumferential direction of the plate cylinder 30 to one side in the circumferential direction of the plate cylinder 30, and is left and right at one end of the pair of left and right bending pieces 258a. A pair of fulcrum pin fitting holes 294 are formed. The left and right pair of left and right symmetrical clamper support plates 293 are provided.
A pair of left and right fulcrum pin fitting holes 295 formed at a position offset to one side from the center P ₁₄ at the tip end of the plate P and a pair of left and right fulcrum pin fitting holes 294 of the plate material clamper 258 form a left and right pair. They are rotatably connected to each other by a fulcrum pin 296.

Therefore, both ends of the plate material clamper 258 in the lengthwise direction are supported by the pair of left and right clamper support plates 293, and the plate material clamper 258 is kept parallel to the plate cylinder 30 with the plate cylinder 30 in the axial direction. The plate material clamper 258 is configured to be movable in the directions of arrows c ₄ and c ₄ ′ that are orthogonal to the pair of left and right fulcrum pins 2 with respect to the left and right pair of clamper support plates 293.
The arrow c shown in FIGS. 22, 28 and 29 centering on 96
It is constructed so as to be rotatable in the directions of ₅ and c ₅ ′.

Then, a pair of left and right spring mounting plates 297 are symmetrical with each other by a pair of setscrews 298 so as to straddle the pair of left and right clamper supporting plates 293 on the outer peripheral side surfaces of the bearings 289 of the pair of left and right rotation supporting bases 290. It is fixed in a shape. The pair of left and right spring mounting plates 297, the ends of the pair of left and right bending pieces 258a on the opposite side of the fulcrum pin fitting holes 294, and the pair of left and right clamper supporting plates 293 are disposed at both sides of the center P ₁₄ . Spring locking portions 299a, 299b and 3 respectively formed on one side and
A pair of left and right tension springs, a total of four crimp springs 301 and 302, are attached between 00a and 300b.

Therefore, the plate material clamper 258 is rotationally biased in the direction of arrow c _{5 about the} pair of left and right fulcrum pins 296 by the pair of left and right pressure springs 301 against the pair of left and right clamper support plates 293, and at the same time, the plate is pressed. Material clamper 2
Together with 58 and the pair of left and right supporting plates 293, the pair of left and right rotating support bases 290 are strongly urged to move in the direction of arrow c ₄ by a total of four crimp springs 301 and 302.

[Description of Cam Mechanism] Next, referring to FIGS. 1 to 4, 21, 21, and 24 to 31, a part of a plate material clamper control mechanism for clamping and unclamping the plate material clamper 258 will be described. The cam mechanism 305 constituting the above will be described.

The cam mechanism 305 has a pair of concentric left and right cams 306 screwed along the outer periphery of both axial end faces of the plate cylinder 30, and a pair of left and right bent pieces 258a of the plate material clamper 258. A pair of left and right bearings, which are rotatably attached to the center P _{14 in} the circumferential direction of the plate cylinder 30 with respect to the center P ₁₄ , a total of 4
One cam driven roller 307, 308.

Then, the plate cylinder 30 of the pair of left and right cams 306 is used.
And 4 pairs of left and right cam driven rollers 307 and 308 on the left and right sides of the outer peripheral surface 306a having a concentric shape.
The two crimp springs 301 and 302 are crimped in the direction of arrow c ₄ . A pair of left and right cam driven rollers 30 is provided on a part of the outer peripheral surface 306a of the pair of left and right cams 306.
A pair of left and right recesses 306b are formed so that 7, 308 can be depressed at the same time.

[Description of Fixed Position Locking Mechanism of Plate Material Clamper Support Mechanism] Next, referring to FIGS. 1 to 4 and 23 to 27, a pair of left and right plate material clamper support mechanisms 288 will be described.
A fixed position lock mechanism 311 that constitutes another part of the plate material clamper control mechanism for locking and unlocking at the plate material clamp position P ₁₃ shown in FIG. 4 will be described.

The fixed position lock mechanism 311 includes a pair of left and right split grooves 312 formed at the ends of the pair of left and right rotary supports 290 opposite to the plate material clamper 258, and inside the pair of left and right split grooves 312. In addition, it is composed of a pair of left and right lock pins 259 that can be inserted and removed in the directions of arrows c ₆ and c ₆ ′ in the direction parallel to the axial direction of the plate cylinder 30.

[Description of Lock Pin Driving Device] Next, referring to FIG.
4 to 37, the lock pin 259 is moved to the direction indicated by the arrows c ₆ , c.
_A pair of left and right lock pin drive devices 31 driven in 6'direction
5 will be described.

The pair of left and right lock pin driving devices 315
Are attached to the plate material clamp position P ₁₃ symmetrically outside the pair of left and right plate cylinder support frames 253. Then, each lock pin drive mechanism 315 penetrates through a through hole 316 formed in each plate cylinder support frame 253 and guides the lock pin 259 into and out of the direction of arrows c ₆ and c ₆ ′. And lock pin 25
9 is a feed screw 318 arranged coaxially at the end opposite to the plate cylinder 30, and a drive motor attached to a bracket 319 for moving the feed screw 318 in the directions of arrows c ₆ and c ₆ ′. 320 and the lock pin 259 with the feed screw 31
8, a return spring 321 that is a compression spring that constantly presses the tip of the lock pin 259 from the direction of the arrow c ₆ ′, and the feed screw 3 of the lock pin 259.
The lock pin 2 is fitted to the outer periphery of the end portion on the 18th side and guided by the guide shaft 322 parallel to the lock pin 259.
The shutter plate 323 which is moved integrally with 59 in the directions of the arrows c ₆ and c ₆ ′, and ON and O by the shutter plate 323.
A pair of sensors S consisting of FF operated photo couplers
₁₂ and S ₁₃ .

When the drive motor 320 is driven to rotate in the forward direction, the feed screw 318 is moved in the direction of arrow c _{6 as} shown by the solid line in FIGS. 35 and 36, and the lock pin 259 is moved.
Is pushed in the direction of arrow c ₆ against the return spring 321, and the tip of this lock pin 259 is inserted into the split groove 312 of the rotation support base 290. And this lock pin 2
59, the rotary support 290 moves the plate material clamp position P ₁₃
Locked in. Then, one sensor S ₁₂ detects the movement of the shutter plate 323, and the lock of the rotation support base 290 is confirmed.

Then, when the drive motor 320 is driven to rotate in the reverse direction, the feed screw 318 is moved in the direction of arrow c ₆ ′, as shown by the alternate long and short dash line in FIGS.
The lock pin 259 is pulled back in the direction of arrow c ₆ ′ by 21 and the lock pin 259 is disengaged from the split groove 312 of the rotary support base 290, and the lock of the rotary support base 290 at the plate material clamp position P ₁₃ is released. It Then, the other sensor S ₁₃ detects the movement of the shutter plate 323,
The lock release of the rotation support base 290 is confirmed.

[Description of Magnet] Next, FIGS.
As shown in FIGS. 0 to 33, the magnet 260 includes the plate cylinder 3
0 is embedded in the plate cylinder 30 at a substantially central position P ₅ in the axial direction of the plate cylinder 30 and is pressed to the outer periphery of the plate cylinder 30 at the plate material clamp position P _{13 in} the length direction of the plate material clamper 258. The central part is attracted by magnetic attraction.

[Description of Plate Material Guide] Next, as shown in FIGS. 1 to 4, the plate material guide 261 has a plate material clamp position P.
_The plate material clamper 258 is mounted on the chassis 252 in parallel with the plate cylinder 30 at a lower portion in the vicinity of the plate material clamper 258 in the direction of the arrow c ′.

[Description of Operation of Plate Material Wrapping Device] [Before Start of Automatic Plate Material Winding Operation on Plate Cylinder] First, before starting the operation, as shown in FIG.
The pair of left and right cam driven rollers 307 and 308 of 05 fall into the recesses 306b of the pair of left and right cams 306, and the plate material clamper 258 causes the pair of left and right crimp springs 301 and 30.
2 is pressed against the outer periphery of the plate cylinder 30 in the direction of arrow c ₄ . Therefore, when the plate cylinder 30 is rotationally driven in this state, the plate material clamper 258 is rotated integrally with the plate cylinder 30.

[Automatic Winding Operation of Plate Material around Plate Cylinder] Next, the plate material jacket 6 is loaded on the jacket loading table 28 of the plate material feeding / discharging device 29 shown in FIGS.
When the sensor S ₂ detects the plate material jacket 6, the plate cylinder 3
The automatic winding operation of the plate material 1 around the outer periphery of 0 is started.

That is, first, as shown in FIG. 1, the plate cylinder driving mechanism 229 drives the plate cylinder 30 in the direction of arrow c, and the rotary encoder 232 detects the position of the plate cylinder 30. Support mechanism 28
8 is stopped at the plate material clamp position P ₁₃ .

Continuing, the pair of left and right lock pins 259 are driven in the direction of arrow c ₆ by the pair of left and right lock pin drive devices 315 shown in FIGS. 34 to 37, and as shown in FIGS. The pair of lock pins 259 are inserted into the pair of left and right split grooves 312 of the pair of left and right rotation support bases 290 from the direction of arrow c ₆ .

Then, as shown in FIG. 1, the pair of right and left plate material clamper support mechanisms 288 and the plate material clamper 258 are positioned at the plate material clamp position P ₁₃ integrally with the pair of left and right rotary supports 290.

When the above-mentioned locked state is confirmed by the sensor S _{12 of} the lock pin driving device 315 shown in FIG. 35, the plate cylinder 30 is continuously rotated in the direction of arrow c.

Then, as shown in FIG. 30, the pair of left and right cam driven rollers 307 of the pair of left and right cam mechanisms 305,
308 is pushed up from the concave portions 306b of the pair of left and right cams 306 onto the outer peripheral surface 306a, and the plate material clamper 258 resists the pair of left and right crimp springs 301 and 302, as shown by a chain line in FIGS. Then, the plate material clamper 25 is separated from the outer periphery of the plate cylinder 30 in parallel with the arrow c ₄ ′ direction.
8 is in the unclamped state.

Then, the plate cylinder 30 continues to rotate in the direction of arrow c, and the first pin 30 which is a pair of left and right reference pins of the two rows of sprocket pins 30a on the outer periphery of the plate cylinder 30.
A is positioned at the reference position P ₁₂ as indicated by the one-dot chain line in FIG. 8, and the plate cylinder 30 stops.

Thereafter, the plate material feeding / discharging device 29 shown in FIGS. 44 to 46 automatically draws the plate material jacket 6 to the predetermined position in the direction of the arrow a, and the plate material from inside the plate material jacket 6 is moved. The automatic drawing operation of the material 1 in the direction of the arrow a is started, and as shown in FIGS. 1 and 8, the leading end 1b of the plate material 1 reaches the crimping position P ₁₁ of the plate cylinder 30 substantially in the tangential direction from the direction of the arrow a. Plated.

At this time, the sensor S _{6 of the} plate material feeding / discharging device 29 is used.
The sprocket holes 3 of the plate material 1 fed in the direction of arrow a are counted by and the amount of drawing of the plate material 1 in the direction of arrow a is detected.

When the sensor S ₆ detects that the plate material 1 is pulled out in a certain amount, the plate cylinder 30 is rotated at a low speed in the direction of arrow c, as shown in FIG. The pin 30A starts moving from the reference position P ₁₂ toward the crimping position P ₁₁ in the direction of arrow c.

At the same time, the pair of left and right plate material pressing plates driving device 264 and plate material press-fitting roller driving device 278 shown in FIGS. 14 to 16 and 17 to 19 press the pair of left and right plate materials. Plate 256 and plate material press-fitting roller 2
Reference numeral 57 indicates an arrow c ₁ from the non-operating position and non-press-fitting position shown by the one-dot chain line in FIG.
And c ₃ direction.

At this time, (A) of FIG. 8, FIG. 12 and FIG.
As shown in FIG.
The bifurcated arm 256a having 6b straddles the left and right sides of the pair of left and right first pins 30A, and the tip 1b of the plate 1 is elastically pressed against the outer periphery of the plate cylinder 30 from the direction of arrow c ₁ .

As a result of this operation, as shown in FIGS. 5 and 6, the pair of left and right first pins 30A of the plate cylinder 30 are attached to the plate material 1.
First hole 3A located at the tip of the row of sprocket holes 3
Is securely engaged with.

At this time, as shown in FIGS. 8, 12 and 13B, the pair of right and left plate material press-fitting rollers 57 are arranged in the two rows of sprocket pins 30a of the plate cylinder 30 by the central annular groove 257a. The leading end 1b of the plate material 1 is elastically pressure-bonded to the outer periphery of the plate cylinder 30 in the direction of arrow c ₃ so as to straddle the movement locus.

Then, when the pair of left and right first pins 30A of the plate cylinder 30 reach the press-fitting position P ₁₁ by the low speed rotation of the plate cylinder 30 in the direction of arrow c, (B) of FIG. 6, FIG. 9 and FIG. 12 and (B) of FIG. 13, a pair of right and left plate material press-fitting rollers 257 press the left and right adjacent positions of the pair of left and right first pins 30A in the direction of arrow c ₃ , and the pair of left and right first plates 30A are pressed. The true cylindrical surface 30 shown in FIG. 7A, which is the root of the pin 30A
reliably press-fitting the first hole 3A of the pair of a ₁ to the plate member 1.

The pair of right and left plate material press-fitting rollers 257 are lowered to the press-fitting position shown by the solid line in FIG. 8 in the direction of arrow c, and the micro switch of the plate material press-fitting roller driving device 278 shown in FIGS. After a certain period of time has passed since S ₁₁ detected this, as shown by the solid line in FIG. 9, the pair of left and right plate material pressing plates 256 rise to the non-operating position in the direction of arrow c ₁ ′.

Then, as shown in FIG. 2, the plate cylinder 30 is continuously rotated at a low speed in the direction of arrow c, and the plate material 1 is pulled in the direction of arrow c by the pair of left and right first pins 30A. While being automatically pulled out from the plate material jacket 6, the two-row sprocket pins 30a of the plate cylinder 30 are sequentially inserted into the two-row sprocket holes 3 of the plate material 1, and a pair of right and left plate material press-fitting rollers are provided. The true cylindrical surface 30 shown in FIG. 7A in which the two-row sprocket holes 3 are the roots of the two-row sprocket pins 30a by 257.
The plate material 1 is automatically wound around the outer periphery of the plate cylinder 30 so as to be surely press-fitted up to a ₁ .

At this time, the front end 1b of the plate material 1 is attached to the plate material guide 2
Guide plate 61 guides plate material clamper 258 and plate cylinder 3
It is possible to smoothly pass through the gap between the outer periphery of 0 and the outer periphery in the direction of arrow c.

Then, as shown in FIG. 2, when the plate cylinder 30 rotates about 375 ° from the reference position P ₁₂ , the plate material 1 is wound around the outer periphery of the plate cylinder 30 at 360 ° + α, The terminal end 1c is overlaid on the leading end 1b of the plate material 1.

Then, the plate cylinder 30 moves from the reference position P ₁₁ to about 4
When rotated by 05 °, FIGS. 3, 20, 26, 27,
As shown in FIGS. 31 and 33, a pair of left and right cam driven rollers 307 and 308 fall into the recess 306b from the outer peripheral surfaces 306a of the pair of left and right cams 306, and a plate material clamper 258 forms a left and right pair and a total of four compression springs. 301, 30
As shown by a solid line in FIG. 20 by 2, the plate cylinder 30 is parallel to the outer peripheral side in the direction of the arrow c ₄ and strongly pressed,
As shown in FIG. 33, the plate material clamper 258 applies an arrow c _{4 to} the outer periphery of the plate cylinder 30 from the top 1b of the plate 1 to the end 1c.
The front end 1b and the end 1c of the plate material 1 are strongly clamped simultaneously by strongly crimping from the direction.

At this time, while the plate cylinder 30 is rotating in the direction of arrow c, a pair of left and right cam driven rollers 307,
After 308 falls into the concave portion 306b of the cam 306 and the plate material clamper 258 is pressure-bonded to the outer periphery of the plate cylinder 30 in the direction of arrow c ₄ , the pair of left and right cam driven rollers 307, 3
08 is pushed up again to the outer peripheral surface 306a of the cam 306, and the plate material clamper 258 is moved from the outer periphery of the plate cylinder 30 to the arrow c.
_The action of separating in the 4'direction occurs. However, the position of the concave portion 306b of the cam 306 is determined so that this operation is performed before the front end 1b of the plate material 1 wrapped around the plate cylinder 30 in the direction of the arrow c reaches the plate material clamper 258. .

Then, when the plate material clamper 258 simultaneously clamps the front end 1b and the end 1c of the plate material 1, FIG.
As shown in FIG. 33, the magnet 260 embedded in the outer periphery of the plate cylinder 30 attracts and strongly fixes the plate material clamper 258 substantially at the center in the length direction.

Then, after the rotary encoder 232 detects the clamp of the front end 1b and the end 1c of the plate material 1 by the plate material clamper 258 and the plate cylinder 30 is stopped, a pair of right and left plate material press-fitting is performed as shown in FIG. Roller 257
Is raised in the direction of arrow c ₃ ′ to the non-press fit position, and
As shown by the alternate long and short dash line in FIG. 27, the pair of left and right lock pins 259 are separated from the pair of left and right split grooves 312 of the pair of left and right rotary support bases 290 in the direction of arrow c ₆ ′, and the pair of left and right rotary support bases The lock in place of 290 is released.

Then, after the above-described plate making process, the plate cylinder 30 is rotationally driven at a high speed in the direction of arrow c, and the image data 2 such as a photograph is made on the surface 1a of the plate material 1.

During the plate making process, the plate material clamper 258 is rotated at a high speed integrally with the plate cylinder 30 while the plate material 1 is clamped, and the centrifugal force generated by the high speed rotation causes
As shown by the chain double-dashed line in FIG. 20, the plate material clamper 258
Around the center of the lengthwise direction from the outer periphery of the plate cylinder 30 is the arrow c.
₄ 'up floating in an arc shape in the direction, the clamping force of the plate material 1 phenomenon occurs to decrease.

However, since the magnet 260 embedded in the outer periphery of the plate cylinder 30 strongly attracts the substantially central portion of the plate material clamper 258 in the longitudinal direction, the above-mentioned inconvenience can be prevented.

[Operation of Unwinding Plate Material from Plate Cylinder] Plate cylinder 30
When the plate material 1 is unwound from the outer periphery of the plate, as shown in FIG. 3, after the pair of left and right rotation support bases 290 is locked at the plate material clamp position by the pair of left and right lock pins 259, the plate cylinder 30 is indicated by the arrow c. 30 by rotating the pair of left and right cam driven rollers 307 and 308 from the concave portions 306b of the pair of left and right cams 306 to the outer peripheral surface 306 as shown in FIG.
a and press the plate clamper 258 up to the arrow c ₄ ′.
Release in the direction.

Next, as shown in FIGS. 4 and 10, the pair of left and right plate material pressing plates 256 is moved down to the operating position in the direction of arrow c ₁ , and these plate material pressing plates 256 are placed on the plate material 1. Elastically presses against the outer periphery of the plate cylinder 30.

After that, the plate cylinder 30 is reversely rotated in the direction of the arrow c ', and the plate material 1 is automatically unwound from the end 1c side by the pair of right and left plate cylinder pressing plates 256. On this occasion,
The two-row sprocket holes 3 of the plate material 1 are picked up by scooping the plate material 1 from the roots of the two-row sprocket pins 30 of the plate cylinder 30 by the pair of left and right plate material pressing plates 256a. The plate cylinder 30 is automatically unwound from the two rows of sprocket pins 30a. The plate material 1 is guided by the pair of right and left plate material pressing plates 256, and the plate material 1 is automatically inserted into the plate material jacket 6 on the jacket loading table 28 in the arrow a'direction.

As shown in FIG. 30, when the plate material clamper 258 is released from the clamp, the cam driven roller 307 moves from the concave portion 306b of the cam 306 rotated in the direction of arrow c to the cam driven roller 307.
When 308 is pushed up in the direction of arrow c ₄ ′, first, the plate material clamper 258 is rotated around the fulcrum pin 296 in the direction of arrow c ₅ ′ as shown by the alternate long and short dash line in FIG. As indicated by the solid line, plate material clamper 258
Is rotated about one cam driven roller 307 in the direction of arrow c ₅ .

Therefore, when the plate material clamper 258 is unclamped, both ends of the plate material clamper 258 in the circumferential direction of the plate cylinder 30 are alternately separated from the outer periphery of the plate cylinder 30 in the arrow c ₅ ′ direction and the arrow c ₅ direction. As a result, the plate material clamper 258 is rotated in the directions of arrow c ₅ ′ and arrow c ₅ .

The plate material clamper 258 can be easily separated from the magnet 260 by the lever action of the rotational movement of the plate material clamper 258 in the directions of the arrow c ₅ ′ and the arrow c ₅ ; The clamp can be released easily.

[Supplement of Plate Material Winding Device] First, the plate cylinder 3
When the winding of the plate material 1 around the outer periphery of 0 is started, as shown in FIG. 8, the left and right sides of the front end 1b of the plate material 1 are elastically pressed against the outer periphery of the plate cylinder 30 by a pair of left and right plate material pressing plates 256. As described above, the first row of sprocket pins 30a in two rows is
The pin 30A is securely inserted into the first hole 3A of the two-row sprocket holes 3, and during the winding operation, as shown in FIGS. 9 and 7A, a pair of right and left plate material press-fitting rollers 257 are used. Since the two rows of sprocket holes 3 are sequentially and surely pressed into the true cylindrical surface 30a ₁ which is the base of the two rows of sprocket pins 30a, the automatic winding operation of the plate material 1 around the outer periphery of the plate cylinder 30 is missed. Without, it can be done smoothly.

Next, when the plate material 1 is automatically wound around the outer periphery of the plate cylinder 30, the first pins 30A of the two rows of sprocket pins 30a are always surely placed in the first holes 3A of the two rows of sprocket holes 3. Since it can be inserted, the plate material 1 shown in FIGS. 1 and 6 with respect to the circumferential reference position P ₁₂ of the plate cylinder 30.
Can be positioned with high precision.

Then, as shown in FIG. 5, the pitch P ₁ and span P ₂ of the two rows of sprocket pins 30a on the outer periphery of the plate cylinder 30 are engaged with the two rows of sprocket holes 3 of the plate material 1. From pitch P ₃ and engagement span P ₄ approximately 0.01-
Since it is made large by about 0.03 mm, 2 of the plate material 1
When the row-shaped sprocket holes 3 are press-fitted into the row-shaped sprocket pins 30a of the plate cylinder 30 and the plate material 1 is wound around the outer periphery of the plate cylinder 30, as shown in FIG. Rows of sprocket pins 30a facing each other in the direction
Between the two rows of sprocket pins 30a that are adjacent to each other in the circumferential direction of the plate cylinder 30, tension is generated in the plate material 1 in the X direction, which is the plate cylinder axial direction, and in the Y direction, which is the plate cylinder circumferential direction. Can be made.

At this time, as shown in FIGS. 5 and 6, the sprocket hole 3 on one end side of the plate material 1 with respect to the sprocket pin 30a is aligned with the reference position P ₅ on one end side in the axial direction of the plate cylinder 30. The press-fitting margin is increased, and the sprocket pin 30 along the non-reference position P ₆ on the other end side in the axial direction of the plate cylinder 30.
Since the press-fitting margin of the sprocket hole 3 on the other end side of the plate material 1 with respect to a is made small, the plate material 1 as a whole is pulled to the reference position P ₅ side as shown by the arrow direction shown by X in FIG. The plate material 1 is also positioned with high precision with respect to the reference position P _{6 in} the axial direction of the plate cylinder 30.

Therefore, the plate material 1 automatically wound around the outer periphery of the plate cylinder 30 is set at the reference position P _{12 in} the circumferential direction of the plate cylinder 30.
It is possible to perform positioning with high accuracy in two directions, namely, the reference position P _{5 in} the axial direction.

In addition, the plate material 1 automatically wound around the outer periphery of the plate cylinder 30 has two rows of sprocket pins 30a.
Since tensions are applied in the X-direction and the Y-direction, which are the plate cylinder axial direction and the plate cylinder circumferential direction, the plate material 1 is not displaced or wrinkled at all.

As shown in FIG. 7A, each sprocket pin 30a is formed with a true cylindrical surface 30a _{1 at the} base, and a tapered surface 30a ₂ and a rounded surface 3 are formed on the top thereof.
Since 0a ₃ are sequentially formed, as shown in FIG. 7A, each sprocket hole 3 of the press-fitted plate material 1 is stabilized at the outer periphery of the true cylindrical surface 30a ₁ which is the root of each sprocket pin 30a. Despite good positioning with high accuracy, as shown in FIG. 7 (B), as shown in FIG. At the time of insertion and removal, the rounded surface 30a ₃ and the tapered surface 30a _{2 of} each sprocket pin 30a
The sprocket pin 30a can be smoothly inserted and removed into and from the sprocket holes 3 by the guide action by the.

The above is a description of one embodiment of the present invention.
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention.

[0165]

The plate making of the present invention having the above-mentioned structure,
The plate material winding device around the plate cylinder of the printing system has the following effects.

The first aspect of the present invention is a two-row sprocket in which two rows of sprocket pins are provided on the plate material along the axial ends of the outer periphery of the plate cylinder by the normal rotation of the plate cylinder. By sequentially inserting into the hole, the plate material is pulled out from the plate material jacket and automatically wrapped around the outer periphery of the plate cylinder. Then, at least the terminal end of the plate material wound around the plate cylinder is clamped so as to be crimped to the outer periphery of the plate cylinder by a plate material clamper provided on a part of the outer periphery of the plate cylinder in parallel with the axial direction of the plate cylinder. However, since the magnet embedded in the outer periphery of the plate cylinder can attract and fix the approximately central portion of the plate material clamper in the longitudinal direction, the plate material wound around the outer periphery of the plate cylinder can be fixed. It can be stably clamped to the outer circumference of.

According to the first aspect of the present invention, since the magnet embedded in the outer periphery of the plate cylinder adsorbs the substantially central portion of the plate material in the longitudinal direction,
When the plate cylinder rotates at high speed during plate making and printing, it prevents the plate material clamper from being lifted from the outer periphery of the plate cylinder by the centrifugal force to reduce the clamping force of the plate material. can do. Therefore, high-precision plate making and printing can be stably performed.

According to the first aspect, when the plate material is automatically wound around the outer periphery of the plate cylinder, the two rows of sprocket pins of the plate cylinder are sequentially inserted into the two rows of sprocket holes of the plate material and wound. Since at least the end of the plate material is clamped by the plate material clamper, the plate material can be positioned and wound around the plate cylinder with high accuracy, and the plate material is not misaligned or wrinkled at all. Therefore, the compatibility of the plate material with the plate cylinder is very high, and the image data of a photograph or the like is plate-prepared for each color such as cyan, magenta, yellow, black, etc. High-quality and high-quality gravure printing can be performed without causing unevenness, image distortion, stains, etc. at all.

According to a second aspect of the present invention, when the plate material clamper is released, the plate material clamper is caused to rotate so as to alternately separate both ends of the plate material clamper in the plate cylinder circumferential direction from the outer periphery of the plate material. With a cam mechanism,
Despite clamping the plate material clamper along the lengthwise center of the plate material with a magnet during clamping, the plate material clamper can be easily removed from the magnet by levering the plate material clamper's rotational movement when the clamp is released. The plate clamper can be easily released from the clamp.

According to the third and fourth aspects, the pair of left and right clamper supporting mechanisms are rotatably attached to the outer circumference of the rotary shaft of the plate cylinder at both ends in the axial direction of the plate cylinder, and a pair of left and right rotary support bases. A pair of left and right clamper support plates slidably supported on the pair of left and right rotary supports in a direction orthogonal to the axial direction of the plate cylinder, and the plate at both ends in the length direction of the plate material clamper. A pair of left and right fulcrum pins whose one end side in the circumferential direction of the cylinder is rotatably supported by the pair of left and right support plates, and the plate cylinder by rotating and biasing the plate material clamper about the pair of left and right fulcrum pins. And a pair of left and right clamper support plates are slidably urged against the pair of left and right rotary supports to urge the entire plate material clamper to the outer periphery of the plate cylinder. With a crimp spring, A cam mechanism is attached to both ends of the plate cylinder in the axial direction of the plate cylinder and both ends of the plate clamper in the lengthwise direction, and each pair is crimped to the outer circumference of the cam by the crimp spring. Since the four cam driven rollers are provided, the plate material clamper can be reliably and easily clamped and released.

[Brief description of drawings]

FIG. 1 is a side view of a plate cylinder showing a plate material winding start state on a plate cylinder for explaining an apparatus for winding a plate material on a plate cylinder of a plate making machine according to an embodiment of the present invention.

FIG. 2 is a side view of the plate cylinder showing a state in which winding of the plate material around the plate cylinder of the above is completed.

FIG. 3 is a side view of the plate cylinder showing a clamped state of the plate material end to the plate cylinder of the above.

FIG. 4 is a side view of the plate cylinder for explaining the unwinding of the plate material from the plate cylinder of the same.

5A is a developed plan view showing a state in which a plate material is wound around a plate cylinder, and FIG. 5B is a side view of FIG. 5A.

6A is a plan view for explaining the tension of the plate material wound around the plate cylinder, and FIG. 6B is a plan view of FIG.
(A) is a sectional front view taken along the line AA of FIG.

FIG. 7 (A) is an enlarged cross-sectional front view for explaining the press fit of the sprocket hole of the plate material into the sprocket pin of the plate cylinder, and FIG. 7 (B) is the insertion of the sprocket pin into the sprocket hole and It is an expanded sectional side view explaining detachment.

FIG. 8 is an enlarged cross-sectional side view for explaining the engaging operation of the first pin of the sprocket pin of the plate cylinder with the first hole of the sprocket hole of the plate material.

FIG. 9 is an enlarged cross-sectional side view for explaining the press-fitting operation of the first hole of the sprocket hole of the plate material into the first pin of the sprocket pin of the plate cylinder.

FIG. 10 is an enlarged sectional side view for explaining the operation of unwinding the plate material from the plate cylinder.

11 is a plan view of FIG. 1. FIG.

12 is a plan view of FIG.

13A is a sectional view taken along the line BB of FIG. 12, and FIG. 13B is a sectional view taken along the line CC of FIG.

FIG. 14 is an exploded perspective view showing a plate material pressing plate and a drive device thereof.

FIG. 15 is a side view of a driving device for a plate material pressing plate.

16 is a sectional front view taken along the line DD of FIG.

FIG. 17 is a perspective view showing a plate material press-fitting roller and a drive device thereof.

FIG. 18 is a side view of a plate material press-fitting roller driving device.

FIG. 19 is a sectional side view taken along the line EE of FIG.

FIG. 20 is a front view showing the entire plate cylinder and plate material clamper.

FIG. 21 is a perspective view showing the entire plate cylinder and plate material clamper.

FIG. 22 is a partially cutaway perspective view showing a plate material clamper.

FIG. 23 is an exploded perspective view showing a plate material clamper support mechanism.

FIG. 24 is a side view showing the clamp release state of the plate material clamper support mechanism.

25 is a sectional front view taken along the line FF of FIG.

FIG. 26 is a side view showing a clamped state of the plate material clamper support mechanism.

27 is a sectional front view taken along the line GG of FIG.

FIG. 28 is an enlarged side view taken along the line HH of FIG. 25.

FIG. 29 is an enlarged side view taken along the line I-I of FIG. 27.

30 is an enlarged sectional side view taken along the line JJ of FIG. 25.

31 is an enlarged cross-sectional side view taken along the line KK of FIG.

32 is an enlarged cross-sectional side view taken along the line LL of FIG.

FIG. 33 is an enlarged sectional side view taken along the line MM of FIG. 27.

FIG. 34 is a side view showing a lock pin driving device.

FIG. 35 is a sectional front view taken along the line NN of FIG. 34.

FIG. 36 is a bottom view taken along the line OO of FIG. 34.

FIG. 37 is an enlarged cross-sectional side view taken along the line PP of FIG.

FIG. 38 is a perspective view showing the entire plate material winding device and the laser block moving device, showing a plate material winding start state.

FIG. 39 is a perspective view of the entire plate material winding device and the laser block moving device, showing a state in which the plate material winding is completed.

FIG. 40 is a perspective view showing a plate material jacket and a plate material.

FIG. 41 is a perspective view showing a plate material jacket accommodating a plate material.

42A is a schematic side view of the plate making machine, and FIG. 42B is a cross-sectional side view of a main part for explaining a printing process.

43 (A) is a schematic side view of the printing machine, and FIG. 43 (B) is a cross-sectional side view of essential parts for explaining the printing process.

FIG. 44 is a plan view of the entire plate material feeding / discharging device.

45 is a partially cutaway side view taken along the line Q-Q in FIG. 44, and is a drawing mainly illustrating the arrangement of the jacket and the plate material retracting device, the jacket fixing device, and the jacket both-sides opening device.

FIG. 46 is a partially cutaway side view taken along the line Q-Q of FIG. 44, and is a drawing mainly illustrating the arrangement of a plurality of sensors.

[Explanation of symbols]

 1 plate material 3 sprocket hole 6 plate material jacket 27 plate making machine 30 plate making machine 30a sprocket pin 37 printing machine 40 printing machine plate cylinder 251 plate material winding device 258 plate material clamper 260 magnet 288 plate material clamper support mechanism 290 rotation Support base 293 Clamper support plate 296 Support point pins 301, 302 Crimping spring 305 Cam mechanism 306 Cams 307, 308 Cam driven roller

Claims (4)

[Claims] 1. A plate making machine comprising a plate material jacket in which a sheet-like plate material is housed so that it can be freely taken in and out, and the plate material in the plate material jacket is drawn out and wound around the outer periphery of a plate cylinder of a plate making machine or a printing machine. In a device for winding a plate material around a plate cylinder of a printing system, sprocket holes formed in two rows along the left and right edges of the plate material and two rows along both axial ends of the outer periphery of the plate cylinder. The plate cylinder is sequentially inserted into the two-row sprocket holes of the plate cylinder by the normal rotation of the plate cylinder, the plate material is wound around the outer periphery of the plate cylinder, and the plate material is rotated by the reverse rotation of the plate cylinder. And a sprocket pin for unwinding the plate cylinder, provided on a part of the outer circumference of the plate cylinder in parallel with the axial direction of the plate cylinder, and at least the end of the plate material wound around the outer circumference of the plate cylinder on the outer circumference of the plate cylinder. Plate material clamp that crimps and clamps And a pair of left and right plate material clamper support mechanisms that rotatably support both ends of the plate material clamper in the longitudinal direction to both ends of the plate cylinder in the axial direction, and a substantially central portion of the outer circumference of the plate cylinder in the axial direction. And a magnet for adsorbing substantially the central portion of the plate material clamper in the longitudinal direction, and a plate material winding device around a plate cylinder of a plate making and printing system. 2. A cam mechanism for causing the plate material clamper to make a rotational motion so as to alternately separate both ends of the plate material clamper in the circumferential direction of the plate cylinder from the outer periphery of the plate cylinder when the plate material clamper is released. The plate material winding device around the plate cylinder of the plate making and printing system according to claim 1, further comprising: 3. A pair of left and right clamper support mechanisms rotatably attached to the outer circumference of the rotary shaft of the plate cylinder at both axial ends of the plate cylinder, and a pair of left and right rotary supports. A pair of left and right clamper support plates slidably supported on a support base in a direction orthogonal to the axial direction of the plate cylinder, and at both ends in the length direction of the plate material clamper, in the circumferential direction of the plate cylinder. And a pair of left and right fulcrum pins whose one end side is rotatably supported by the pair of left and right supporting plates, and the plate material clamper is rotationally biased about the pair of left and right fulcrum pins to be crimped to the outer periphery of the plate cylinder. A pressure spring and a pressure spring for biasing the entire plate material clamper to the outer periphery of the plate cylinder by slidingly biasing the pair of left and right clamper support plates against the pair of left and right rotary supports. Claims characterized by 2 plate making according, the plate material wrapped around device to the plate cylinder of the printing system. 4. The cam mechanism is attached to cams formed at both ends in the axial direction of the plate cylinder and both ends in the length direction of the plate material clamper, and is crimped to the outer periphery of the cam by the crimp spring. 4. A plate material winding device for a plate cylinder of a plate making and printing system according to claim 3, further comprising a pair of cam driven rollers each of which is provided.