JP2001150642A - Plate inserting device in rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the number of parts and to simplify the structure. SOLUTION: The hooking side of a new plate is sucked on a suction pad 45 of a plate holding tool 41 and the plate holding tool 41 is moved along a guide rail 42. When the plate holding tool 41 is positioned at the top end part of the guide rail, the hooking side of the new plate is inserted while it is positioned at a reference pin of a plate vise 25 on the hooking side of a plate cylinder 20. A safety cover 34 is elevated and lowered to open and close the front face of the plate cylinder 20 by driving a sprocket 35. The reference pin 36 is provided on the lowest insulation plate 33A of the safety cover 34. When the safety cover 34 is made under a closed condition and the new plate is sucked on the suction pad 45 of the plate holding tool 41, the new plate is temporarily positioned by means of the reference pin 36. In addition, to insert the new plate into the plate vise 25 of the hooking side, before the plate holding tool 41 is moved, the safety cover 34 is opened and the temporary positioning of the reference pin 36 and the new plate is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate inserting device for a rotary printing press, and more particularly to a positioning device for temporarily positioning a printing plate when the printing plate is inserted into a plate fixing device of a plate cylinder. About.

[0002]

2. Description of the Related Art Generally, in this type of apparatus, when a printing plate is inserted into a plate fixing device while positioning the printing plate on a reference pin of the plate fixing device by a plate inserting member, a separate plate provided on the plate inserting member is provided. Temporary temporary positioning is performed by the reference pin, and the temporary positioning is released immediately before insertion into the plate fixing device. An apparatus of this type is disclosed in Japanese Patent Application Laid-Open No. 6-13497.
No. 3 discloses a technique disclosed in Japanese Patent Laid-Open Publication No. Hei. What is disclosed here is a plate cylinder in which a reference pin is provided on the gripping plate vise,
A loader provided with a new plate mounting portion for swingably supported on the peripheral surface of the plate cylinder so as to be freely contactable and detachable, and for mounting a new plate;
A reference pin is provided at the tip of the loader so as to be movable forward and backward. By swinging the loader so that the tip of the loader faces the plate vise of the plate cylinder, immediately before the new plate is inserted into the plate vise, the reference pin of the loader is retracted, and the temporary position between the reference pin and the new plate is changed. Positioning is released.

[0003]

However, in the above-described conventional plate inserting device of the rotary printing press, a structure is employed in which the reference pin itself is moved forward and backward, and a dedicated driving device for moving the reference pin forward and backward is used. However, there is a problem that not only the number of parts increases but also the structure becomes complicated.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a plate insertion device for a rotary printing press which has a reduced number of parts and a simplified structure. is there.

[0005]

SUMMARY OF THE INVENTION To achieve this object, an invention according to claim 1 is a plate insertion device in a rotary printing press for inserting a plate into a plate fixing device of a plate cylinder. And a cover for moving the front side of the plate cylinder openable and closable, and a cover for moving the plate holder between a position where the plate is held and a position for inserting the held printing plate into the plate fixing device of the plate cylinder. And a reference pin for positioning the plate held at a position where the plate holder holds the plate. Therefore, with the cover closed,
When the printing plate is held by the plate holder, the printing plate is temporarily positioned by the positioning pins of the cover. Claim 2
In the invention according to claim 1, in the invention according to claim 1, the reference pin comes off the printing plate by moving the cover in the opening direction. Therefore, the reference pin is automatically released from the plate by opening the cover.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing the entire structure of a rotary printing press according to the present invention. FIG.
FIG. 4 is a side view showing, in an enlarged manner, a drive unit of the plate holder, and FIG. 5 is a view taken in the direction of the arrow V in FIG. 6 is a sectional view taken along line VI-VI in FIG. 2, FIG. 7 is a sectional view taken along line VII-VII in FIG. 2, FIG. 8 (a) is a sectional view taken along line VIII (a) -VIII (a) in FIG. (B) is a view on arrow VIII (b) in FIG. 9 is a block diagram showing the same configuration, FIG. 10 is a flowchart showing switching between full-automatic plate exchange and semi-automatic plate exchange, FIG. 11 is a flowchart showing the first half operation of full-automatic plate exchange, and FIG.
2 is a flowchart showing the latter half operation of the full-automatic plate exchange, and FIG. 13 is a flowchart showing the operation of the semi-automatic plate exchange. 14 to 17 are sectional views taken along the line XIIII-XIIII in FIG. 2 for explaining the operation of the fully automatic plate changing. 18 to 21 are sectional views taken along the line XIIII-XIIII in FIG. 2 for explaining the operation of the semi-automatic replacement.

In FIG. 1, a reference numeral 1 generally designates a sheet-fed rotary printing press for double-sided printing.
And upper four printing units 3A to 3D for surface printing
And four lower printing units 4A to 4D for backside printing
And a paper discharge device 5. Paper feeder 2
Is provided with a conventional and widely known sucker device (not shown) which feeds the paper 11 loaded on the paper stacking plate 10 to the feeder board 12 one by one. The paper 11 sent out to the feeder board 12 is changed into a claw of the transfer cylinder 13 of the first color printing unit 3A by a swing device (not shown) provided at the end of the feeder board 12. Four printing units 3A for surface printing
The 3D is provided with a plate cylinder 15 around which a printing plate is wound, a blanket cylinder 16 in contact with the plate cylinder 15, and a double-diameter impression cylinder 17 in contact with the blanket cylinder 16. Is provided with an ink section 18 for accommodating an inking device. The paper 11 held by the pawl of the transfer cylinder 13 is replaced by the pawl of the impression cylinder 17, and the first color printing is performed on the surface when the paper 11 is conveyed between the blanket cylinder 16.

[0008] Four printing units 4A to 4 for back side printing
D has a plate cylinder 20 around which a printing plate is wound, and a plate cylinder 2
A blanket cylinder 21 in contact with the cylinder 0 and a double-diameter impression cylinder 22 in contact with the blanket cylinder 21 are provided. Below the plate cylinder 20, an inking device including a large number of rollers (not shown) is housed. An ink section 23 is provided. The paper 11 in which the claws of the impression cylinder 17 of the printing unit 3A for front side printing are replaced with the claws of the impression cylinder 22 of the printing unit 4A for back side printing,
The first color printing is performed on the back surface when the sheet is conveyed between the blanket cylinder 21. Thereafter, the printing units 3B to 3D for front side printing and the printing unit 4B for back side printing are sequentially arranged.
Through 4D, four-color printing is performed on the front and back surfaces of the paper 11.

The paper 11 held by the claws of the impression cylinder 22 of the printing unit 4D for backside printing of the fourth color is held by a claw pole provided between a pair of left and right discharge chains of the discharge device 5. Replaced with a nail device. After the paper 11 held by the gripper device is conveyed by the paper ejection chain, the gripper by the gripper device is released by the cam mechanism, so that the paper 11 is dropped and stacked on the paper stacking plate 24. As shown in FIG. 3, in the notch formed on the peripheral surface of the plate cylinder 20, a grip-side plate vise 25 and a tail-side plate vise 26 are provided. , Vise 25
a, 26a and holding plates 25b, 26b, respectively. On a top surface of a vise table 25a of the gripping plate vise 25, a pair of reference pins 2 arranged in the cylinder axis direction of the plate cylinder 20 is provided.
7, 27 (one not shown) are provided upright. Notches 7, 7 formed on the edge on the grip side of the new plate P2 are engaged with these reference pins 27, 27, thereby positioning the new plate P2 in the vertical direction and the width direction. The arrangement of cylinders or plate vise described above does not differ significantly from the configuration of sheet-fed rotary printing presses for double-sided printing that have been widely known in the past.

A plate insertion device in a rotary printing press, which is a feature of the present invention, employed in the printing units 4A to 4D for backside printing will be described below with reference to FIGS. Each of the printing units 4A to 4D
Each of the plate insertion devices employed in the printing unit 4A has exactly the same structure. Hereinafter, only the plate insertion device employed in the printing unit 4A will be described. In FIG. 2, a pair of left and right frames 3 facing each other is provided in a printing unit 4A.
0, 30 and these left and right frames 3
A pair of left and right chain guides 31, 31 is fixed inside the upper portions of 0, 30. These chain guides 3
A pair of left and right chains 32, 32 are supported on the pair 1, 31 so as to be slidable in the vertical direction, respectively, and a plurality of elongated shield plates 33 are horizontally suspended between the left and right chains 32, 32.

A safety cover 34 is formed by the plurality of shielding plates 33. As shown in FIG. 3, the safety cover 34 is driven by a sprocket 35 whose teeth face the chain guide 31, and the front side of the plate cylinder 20 is driven. Is configured to open and close. That is, the teeth of the sprocket 35 are engaged with the chain 32, and the sprocket 35 is driven in the forward / reverse direction by a safety cover driving motor 87 (FIG. 9).
(See FIG. 2). In the figure, when the sprocket 35 rotates clockwise, the safety cover 34 rises and the front side of the plate cylinder 20 is opened, and when the sprocket 35 rotates counterclockwise, the safety cover 34 descends. The front side of the plate cylinder 20 is closed. A pair of left and right reference pins 36, 3 is provided on the shielding plate 33A positioned at the lowermost of the plurality of shielding plates 33.
6 have been planted.

Next, the plate insertion device 40 will be described with reference to FIGS. In FIG. 5, the plate insertion device 4
Reference numeral 0 denotes a plate holder 41 for sucking and holding the gripping side of the new plate P2, a pair of guide rails 42, 42 as a pair of left and right posture changing means for guiding the plate holder 41, and a plate holder 41. It is schematically configured by an actuator 43 to be moved. The actuator 43 is composed of two plate holder first actuators 43A and plate holder second actuators 43B, and these two actuators 43A and 43B are united. Therefore, these actuators 43A and 43B have a function of positioning the plate holder 41 at three points A, B and C by selective driving. The plate holder 41 is formed in an elongated rectangular parallelepiped, and a large number of suction pads 45 are provided on the front surface in two rows, and suction air from a suction pump 86 (see FIG. 9) is supplied to the suction pads 45 as negative pressure. Is done. As shown in FIG. 4, on the back of the plate holder 41,
A pair of left and right blind hole-shaped fitting holes 46, 46 are provided,
In the openings of these fitting holes 46, 46, spherical sliding bearings 4 are provided.
7, 47 are fixed. Also, as shown in FIG.
At the left and right ends of the plate holder 41, two pairs of rollers 48 are rotatably supported.

Each of the pair of guide rails 42 is provided with a guide groove 50 having a U-shaped section. As shown in FIG. , 42 are fixed inside the left and right frames 30, 30. As shown in FIG. 4, the guide rail 42 includes a first linear portion 42a extending substantially vertically in a vertical direction forming a lower portion, and a second linear portion tilting obliquely upward forming an upper portion. 42c and a curved portion 42b interposed between the first linear portion 42a and the second linear portion 42c. Among them, the inclination of the second linear portion 42c is, as shown in FIG. 16 (b), the vice table 25a of the gripper side vice 25 of the plate cylinder 20 positioned at a predetermined rotation position when a new plate is inserted. Is formed so as to be the same as the inclination of the upper surface. By engaging the rollers 48 of the plate holder 41 described above with the guide grooves 50 of the guide rails 42, the plate holder 41 is movably supported as guided by the guide grooves 50.

In FIG. 5, reference numeral 51 denotes left and right frames 3.
A drive shaft rotatably supported between 0 and 30. A pair of drive levers 52 and 52 are implanted on the left and right sides of the drive shaft 51. It is slidably and tiltably inserted into the insertion hole 46 via the 41 spherical slide bearing 47. Both ends of the drive shaft 51 are connected to the left and right frames 30, 30.
And a pair of intermediate levers 53, 5
One end of each of the three is fixed. A pivot 54 is pivotally attached to the other ends of the intermediate levers 53 and 53, and a rod of the first actuator 43A for the plate holder is fixed to the pivot 54, and a second rod for the plate holder is fixed. The distal end of the rod of the actuator 43B is pivotally attached to the frame 30.

Therefore, in FIG. 4, when both rods of both actuators 43A and 43B are retracted,
The plate holder 41 is connected to the first linear portion 42a of the guide rail 42.
At point A. At this point A, the new edition P
2 so that the suction pad 45 can be attached to the plate holder 41.
Is in a vertical state, and the attitude of the plate holder 41 in this state is changed to the first state in which the new plate P2 is mounted on the plate holder 41.
And point A is a first position. Therefore, in the first position of the plate holder 41, the new plate P2 whose gripping side is sucked by the suction pad 45 is also in the vertical state. The plate holder 41 located at the first position is located immediately below the lowermost shielding plate 33A of the closed safety cover 34, as shown in FIG.

One plate holder first actuator 4
When the rod of 3A is advanced, the drive shaft 51 rotates clockwise in FIG. 4 via the rotator 54 and the intermediate lever 53,
The plate holder 41 is positioned at the point B of the curved portion 42b of the guide rail 42. At this point B, FIG.
As shown in the figure, the suction surface of the suction pad 45 of the plate holder 41 is inclined by an angle α from the horizontal plane, and the suction pad 45
The gripping side of the new plate P2 that is attracted to the plate is also inclined by the angle α. In this state, the gripping side of the new plate P2 sucked by the suction pad 45 is retracted from the old plate discharge port 62, and the front of the old plate discharge port 62 is opened, so that the old plate P1 is discharged from the old plate discharge port 62. Will be possible.

Therefore, the posture of the plate holder 41 at this time is set to a second posture at which the old plate P1 can be discharged, and this point B is set to a second position. Further, when the rod of the second actuator 43B for the other plate holder is also advanced,
The drive shaft 51 further rotates clockwise in FIG. 4, and the plate holder 41 is positioned at the point C of the second linear portion 42c of the guide rail 42. When the plate holder 41 is positioned at the point C, as shown in FIG. 16B, the holding side plate vise 25 of the plate cylinder 20 is placed on an extension of the suction surface of the suction pad 45 of the plate holder 41. The upper surface of the vise 25a is positioned.
Therefore, the posture of the plate holder 41 at this time is changed to the new plate P
2 is a third position allowing insertion between the vise table 25a and the gripper plate 25b, and this point C is a third position.

Next, referring to FIGS. 2, 3, 6, and 7,
The fixed cover and the plate discharging cover will be described. In FIG. 3, a plate discharge cover 55 is provided directly below the plate holder 41 positioned at the first position A, and as shown in FIG. 2, the plate discharge cover 55 has a pair of hinges 56, 56 at the lower end.
As shown in FIG. 6 (b), the hinge 56 is capable of falling down on the inside of the machine around the hinge 56 as a rotation center. The fixed cover 57 is, as shown in FIG.
The front plate 58, the horizontal plate 59, and the rear plate 60 have a crank-shaped cross section, and the left and right ends are left and right frames 3.
Mounted inside 0,30. As shown in FIG. 3, below the horizontal plate 59, an ink fountain 23a of an inking device housed in the ink unit 23 is provided. In order to supply ink to the ink fountain 23a, a fixed cover 57 is provided. An opening 58 a is formed below the front plate 58.

As shown in FIG. 6, the lower ends of a pair of left and right cover opening / closing actuators 61 are pivotally attached to the back surface of the front plate 58 of the fixed cover 57, and the tip of a rod 61a of the cover opening / closing actuator 61 is discharged. It is pivotally attached to the back of the cover 55. Therefore, when the rod 61a moves forward, the plate discharge cover 55 rotates counterclockwise about the hinge 56 as shown in FIG. 3A, and the front side of the printing unit 4A is closed. On the other hand, when the rod 61a is retracted, the same as FIG.
As shown in (2), the plate discharge cover 55 rotates clockwise about the hinge 56, so that the front side of the printing unit 4A is opened and the old plate discharge port 62 is formed.

2 and 6, reference numeral 63 denotes a guide member, which is a U-shaped guide portion 63a when viewed from the front, and a pair of leg portions formed by bending the left end of the guide portion 63a at right angles to the rear side in the figure. 63b, 63b are formed in series by one rod member. The guide member 63 includes a leg 63
b and 63b are implanted on the left end side of the upper part of the fixed cover 57, and the guide portion 63a extends to the right end side so as to be parallel to the fixed cover 57 and horizontal in the left-right direction. That is, as shown in FIG.
A gap having a certain width is provided between the front plate 58 and the front plate 58 of the fixed cover 57. As shown in FIG.
Is configured to be guided. In FIG. 2, the space between the right end of the guide portion 63a and the front plate 58 of the fixed cover 57 is open, and the guide is guided by the gap between the guide portion 63a and the fixed cover 57, as shown in FIG. Then, the old plate P1 held by the plate receiver 75 is
It is configured such that it can be removed from the right end side of a. 2, a pair of rectangular windows 64, 64 are formed in the left and right ends of the front plate 58 of the fixed cover 57. 2 and 7, the horizontal plate 5 of the fixed cover 57 is shown.
9, a pair of long and narrow rectangular fitting holes 65,
65 are drilled.

In FIGS. 2 and 7, reference numeral 66 denotes a link member, the upper end of which is pivotally connected to a lever 67 fixed to the back surface of the plate discharge cover 55, and the lower end of which is pivotally connected to a plate entry restricting member 68. As shown in FIG.
In the state shown in FIG. 7A in which the base end is rotatably supported on the back side of the front plate 58 of the fixed cover 57 and the plate discharge cover 55 closes the plate discharge outlet 62, the swing end The side faces parallel to the fitting hole 65.
In this state, the opening 58 of the front plate 58 of the fixed cover 57
The upper side of a is opened, and maintenance of the inking device 23a and the like can be performed from the opening 58a. From this state,
As shown in FIG. 8B, when the plate discharge cover 55 rotates clockwise in the figure around the hinge 56 as a rotation center, the plate entry restricting member 68 moves through the link member 66 so that the base end portion rotates about the rotation center. , And closes the upper side of the opening 58 a through the fitting hole 65. 2 and 8, a plate pushing member 70 faces the back side of the window 64.
The lower end of the plate pushing member 70 is fixed to a rotation shaft of a plate pushing actuator 71 fixed to the front plate 58 of the fixed cover 57. Therefore, when the rotation axis of the plate pushing actuator 71 rotates counterclockwise in FIG. 8A, the plate pushing member 70 also rotates counterclockwise to move the plate pushing member 70 from the window 64 to the outside of the front plate 58. Protrude.

Next, the plate receiving structure will be described with reference to FIGS. 2 and 3, between the lower ends of the left and right frames 30, 30, a bracket 74 is laid horizontally. The bracket 74 is formed in a crank shape in a side view, and an upper surface portion 74a and a lower surface portion 74b are provided. ing. Reference numeral 75 denotes a flat plate receiver, which is formed in an elongated rectangular shape when viewed from the front, and has a lower end provided with a bracket 7 through a hinge 76.
4 and is rotatably supported about the hinge 76 as a rotation center, and opens and closes the lower side of the opening 58a. A pair of support members 77, 77 are provided on the left and right sides of the front side of the plate receiver 75, and these support members 77, 77 are provided.
Are provided with a reflection-type photoelectric sensor 77a directed toward the inside of the plate receiver 75. 78,7
8 is a pair of left and right plate receiving drive actuators,
A rod 78 is pivotally attached to the upper surface portion 74 a of the bracket 74.
The tip of a is pivotally attached to the back of the plate receiver 75.

Accordingly, when the rod 78a of the actuator 78 is retracted, the plate receiver 75 rotates clockwise in FIG. 3 around the hinge 76 as a rotation center, and closes the lower side of the opening 58a. On the other hand, the rod 78 of the actuator 78
When a is advanced, the plate receiver 75 rotates counterclockwise in FIG. 3 around the hinge 76 as a rotation center, and opens the lower side of the opening 58a. As shown in FIG. 14A, when the plate receiver 75 is closed, when the gripping side of the new plate P2 is sucked to the suction pad 45 of the plate holder 41, the support member 77 is moved to the new plate, as described later. We support the butt of P2. Also,
When the plate holder 75 is opened from this state, as shown in FIG. 7B, the plate edge of the new plate P2 is disengaged from the support member 77, supported by the tip of the plate receiver 75, and the discharged plate P1 is discharged.
Is supported on the back of the plate receiver 75.

In FIG. 9, reference numeral 80 denotes a fully automatic plate change button, 81 denotes a semi-automatic plate change button, and 82 denotes a suction pump 86.
Is a plate suction button that activates the plate receiving button 83 that activates the plate receiving drive actuator 78. A plate change start button 84 is a button for automatically discharging an old plate and activating an operation for supplying a new plate at the time of full automatic plate change. Reference numeral 85 denotes an operation button for driving both the grip-side and rear-side plate vise opening / closing actuators 89, 90 in order to supply the new plate P2 at the time of semi-automatic plate change. A drive motor 88 rotates the cylinder of the entire printing press, and rotates the plate cylinder 20 by a predetermined amount in the forward and reverse directions during plate change. 9
Reference numeral 1 denotes a control device that controls operations of the above-described actuators and the like by operating the above-described buttons.

Reference numeral 89 denotes a gripper-side vise opening / closing actuator. When the gripper-side vise opening / closing actuator 89 is operated, it is actuated via a lever (not shown) via a lever (not shown).
The gripper camshaft (not shown) of the gripper vise 25 in FIG. 3 rotates in the forward and reverse directions by a predetermined amount. The gripper plate 25b swings by the rotation of the gripper side cam shaft, and the gripper side gripper side of the printing plate is closed and opened with the vise table 25a. On the other hand, when the rear side vise opening / closing actuator 90 is operated, the rear side cam shaft (not shown) of the rear side vise 26 in FIG. Rotate in the direction. The rotation of the rear cam shaft causes the grip plate 26b to swing, and the vise table 26a
The mouth is closed and opened at the bottom of the printing plate.

Next, the operation of fully automatic plate replacement will be described with reference to FIGS. 10, 11, 12, and 14 to 17. FIG. As shown in FIG. 14A, the plate holder first actuator 43A and the second actuator 43B are inactivated beforehand, and the plate holder 41 is turned off.
Is positioned at the first position. By operating the fully automatic version change button 80 in FIG. 10 to turn it on,
A method of automatically changing the printing plate is selected (S1). In FIG. 14A, the notch 7 of the new plate P2 is set so that the plate edge of the new plate P2 is supported on the support member 77 of the plate receiver 75 so that the new plate P2 passes outside the guide portion 63a of the guide member 63. The holding side of the new plate P2 is mounted on the suction pad 45 of the plate holder 41 by engaging with the reference pin 36 of the lowermost shielding plate 33A of the safety cover 34 (S3). At this time, the new plate P2 whose upper end notch 7 is engaged with the reference pin 36 and whose lower end is supported on the support member 77 of the plate receiver 75 is elastically deformed and bent as shown in FIG. As a result, the notch 7 at the upper end is pressed by the reference pin 36.

In step S4, the plate suction button 82 is operated to be turned on, and in step S5, the suction pump 8 is turned on.
6, the holding side of the new version P2 is placed on the plate holder 41.
The new plate P2 is sucked by the suction pad 45 of the plate holder 41.
Is held. At this time, the suction force of the suction pump 86 is set to such an extent that the new plate P2 is sucked so as to be slidable on the suction pad 45. In step S6, when the plate receiving button 83 is operated to be turned on, in step S7, the plate receiving actuator 78 is operated and the rod 7 is turned on.
8a moves forward. Therefore, as shown in FIG. 14B, the plate receiver 75 is opened, and the plate bottom of the new plate P2 is attached to the support member 77.
, And is supported by the tip of the plate receiver 75, and the holding of the new plate P2 is completed. At this time, the holding side of the new plate P2 is held by the plate holder 41, and the bottom of the plate is supported by the tip of the plate receiver 75.
2 covers a discharge path of the later-described old version P1 discharged from the sheet P2.

In step S8, the version change start button 84
Is operated to turn ON the safety cover driving motor 87 in the forward direction in S9.
As shown in (a), the sprocket 35 rotates clockwise in the figure. Accordingly, the safety cover 34 is raised, the front side of the plate cylinder 20 is opened, and the reference pin 36 of the shielding plate 33A is removed from the notch 7 of the new plate P2. In this way, the temporary positioning of the new plate P2 and its release are performed by using the opening and closing operation of the safety cover 34, and the reference pin 36 is used.
Since there is no drive means for exclusively moving the motor, the number of parts is reduced and the structure is simplified. S1
At 0, when the cover opening / closing actuator 61 operates, the plate discharge cover 55 rotates, and the upper end of the plate discharge cover 55 falls down toward the plate cylinder 20, so that the old plate discharge port 62 is opened. At the same time, when the plate discharge cover 55 falls, the plate entry restricting member 68 is rotated via the link member 66, and the upper side of the opening 58 a is closed by the plate entry restricting member 68. In S11, the plate holder first actuator 43A is operated, and as shown in FIG. 15B, the plate holder 41 is positioned at the point B which is the second position. In the second position, as described above, the plate holder 41 is switched to the second position that allows the old plate P1 to be discharged.

In S12, the drive motor 88 is driven in the reverse direction, and the plate cylinder 20 is rotated in the reverse direction by a predetermined amount.
When the plate cylinder 20 is stopped in step S14, the gripper side vise opening / closing actuator 89 is operated in step S14, and the plate cylinder 2 is stopped.
Older version P1
The grip on the grip side is released. In S15, the plate cylinder 20 is rotated by a predetermined amount in the reverse direction.
0 stops, in step S17, the rear side vice opening / closing actuator 90 is operated, and the rear side vice 26 of the plate cylinder 20 is activated.
Since the grip is opened, the grip on the butt side of the old version P1 is released. In S18, when the plate cylinder 20 rotates in the reverse direction, the buttocks of the old plate P1 come off the plate cylinder 20, and the plate discharge cover 5
5 is guided by the old version P1
2 is discharged outside the machine. As shown in FIG.
The discharged old version P1 is the guide portion 63a of the guide member 63.
Is guided downward through the inside of the plate, the gripping side is released from the grip of the gripping side vise 25, and the plate bottom is supported by the plate receiver 75. At this time, the opening 58 is
a of the old plate P1 is discharged from the opening 58a through the opening 58a.
Side entry is prevented. At this time, the old version P
Since the plate edge of No. 1 is detected by the photoelectric sensor 77a,
It is confirmed that the old plate P1 has been stored in the plate receiver 75, and the plate discharging operation of the old plate is completed.
0 rotation is stopped. As described above, the completion of the ejection of the old plate P1 is detected by the photoelectric sensor 77a, so that the next new plate P2 can be supplied safely and reliably. As described above, the old plate P1 in which the plate bottom is supported by the plate receiver 75 is the guide portion 6 of the guide member 63.
Since the space between the right end of 3a and the front plate 58 of the fixed cover 57 is open, the guide portion 63a can be removed from the right end side, that is, from the side. Therefore, there is no need to lift the old version P1 and remove it from the upper side.
4 and the like, so that the old version P1 can be easily removed without damaging it. At this time, the grip-side plate vise 25 is positioned so as to face the end face of the second linear portion 42c of the guide rail 42.

In step S20, when the plate holder second actuator 43B operates, the plate holder 41 is moved to the second linear portion 4 of the guide rail 42 as shown in FIG.
It moves to 2c and is located at the third position C. At this time, the inclination of the second linear portion 42c and the gripping side vise 2
5, the inclination of the upper end surface of the vise table 25a is substantially the same as that of the vise table 25a, and the extension of the suction surface of the suction pad 45 of the plate holder 42 positioned on the second linear portion 42c Since the end face is positioned, the gripping side of the new plate P2 sucked by the suction pad 45 is the vice stand 25a and the gripper plate 25.
b. At this time, the notch 7 of the new version P2
The plate holder 41 is positioned at the third position C so that is pressed by the reference pin 27. Here, when the notch 7 of the new edition P2 engages with the reference pin 27, as described above,
The suction force of the suction pump 86 is set to such an extent that the new plate P2 is sucked so as to be slidable on the suction pad 45. Therefore, the notch 7 of the new plate P2 is pressed against the reference pin 27 while the suction pad 45 slides with respect to the new plate P2.
5 is securely positioned. In S21, the grip side plate vise opening / closing actuator 89 operates,
The grip on the grip side end of the new edition P2 is closed between the grip plate 25b and the vise stand 25a.

In step S22, the suction pump 86 is deactivated, and the suction of the new plate P2 by the suction pad 45 of the plate holder 41 is released, so that the new plate P2 is held only by the grip of the holding plate vise 25. You. In S23, the plate cylinder 20 rotates a predetermined amount in the forward direction and stops in S24, and in S25, the rear plate vise opening / closing actuator 90 is operated, so that the grip plate 26b and the vise table 26a are moved between the grip plate 26b and the vise table 26a. The rear end of the new plate P2 is closed and the new plate P2 is wound around the plate cylinder 20, as shown in FIG. In S26, the plate holder first and second actuators 43A and 43B are both in the inactive state, as shown in FIG.
The plate holder 41 is positioned at the first position along the guide rail 42 from the third position.

In S27, the cover opening / closing actuator 61 is deactivated, and the plate discharge cover 55 closes the plate discharge outlet 62. In S28, the plate pushing-out member 70 protrudes from the window 64 of the fixed cover 57 by the operation of the plate pushing-out actuator 71, so that the discharged old plate P1 is moved outside the fixed cover 57 by the plate pushing-out member 70. Extruded. In S29,
When the safety cover driving motor 87 is driven in the reverse direction, the safety cover 34 moves down and closes the front side of the plate cylinder 20. In step S30, the operator manually discharges the old plate P1 from the side of the guide portion 63a, and in step S31, operates the plate receiving button 83 to turn off the plate receiving button 83. In step S32, the plate receiving driving actuator 78 is deactivated. The plate receiver 75 rotates to close the lower side of the opening 58a. At the same time, the plate pushing-out actuator 71 is deactivated, and the plate pushing-out member 70 is stored inside the fixed cover 57.

Next, FIGS. 10 and 13 and FIGS.
The operation of exchanging printing plates semi-automatically will be described with reference to FIG. In FIG. 10, a fully automatic version change button 80 is selected in S1.
By operating the semi-automatic plate change button 81 in S2 to turn it on without operating, the method of changing the printing plate semi-automatically is selected. In FIG. 13, when the plate change start button 84 is operated and turned on in S40, the safety cover driving motor 87 is driven in the forward direction in S41, so that the safety cover 34 is closed in FIG. Since it rises from the state as shown in FIG. 7B, the front side of the plate cylinder 20 is opened. In S42, the plate cylinder 20 is rotated in the opposite direction by a predetermined amount. When the plate cylinder 20 is stopped in S43, the gripper plate vise opening / closing actuator 89 is operated in S44. Power 2
The grip 5 is opened, and the grip on the grip side of the old version P1 is released.

At S45, the plate cylinder 20 is rotated by a predetermined amount in the reverse direction.
In FIG. 7, the actuator 90 for opening and closing the rear side vise is operated, so that the grip of the rear side vise 26 of the plate cylinder 20 is opened and the grip on the rear side of the old version P1 is released. In step S48, when the plate cylinder 20 rotates in the opposite direction, as shown in FIG. 19A, the trailing side of the old plate P1 comes off the plate cylinder 20, and as shown in FIG. To grip. Further, the plate cylinder 20 makes substantially one turn in the reverse direction, and S4
9, when the plate cylinder 20 is stopped,
0, the old version P is manually created in S50.
Discharge 1.

In step S51, the new plate P2 is grasped by hand and inserted between the vise table 25a of the holding plate vice 25 of the plate cylinder 20 and the holding plate 25b as shown in FIG. , The operation button 85 is turned ON. S
In 53, the gripper side vise opening / closing actuator 89
Is operated, the holding plate 25b and the vise table 25a are actuated.
The gripping of the edge of the gripping side of the new edition P2 is performed. In S54, when the operation button 85 is turned on again, in S55, as shown in FIG. 20B, the plate cylinder 20 rotates a predetermined amount in the forward direction, and stops in S56. In S57, the butt-side vise opening / closing actuator 9
0 operates to rotate the rear cam shaft 26c, so that the new plate P2 is held between the gripper plate 26b and the vise table 26a.
The butt side end is closed and the new edition P2 is
Wrapped around. In S58, the safety cover driving motor 87 is driven in the reverse direction, and as shown in FIG.
The safety cover 34 descends and closes the front side of the plate cylinder 20. In the present embodiment, an example in which the present invention is applied to a sheet-fed rotary printing press that prints sheet-shaped paper has been described, but the present invention is also applicable to a web rotary printing press that prints a web. In order to insert the new plate P2 into the plate side vise 25 of the plate cylinder 20, the notch 7
Is engaged with the reference pin 27, but the reference pin 27
Is not necessary.

[0036]

As described above, according to the first aspect of the present invention, the plate is positioned by the reference pin provided on the cover, so that the member for exclusively supporting the reference pin and the driving for exclusive driving are provided. No means is required, the number of parts is reduced, and the structure is simplified.

According to the second aspect of the present invention, when the cover is opened, the reference pin is securely removed from the printing plate.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an entire rotary printing press according to the present invention.

FIG. 2 is a view taken in the direction of the arrow II in FIG.

FIG. 3 is a view taken in the direction of the arrow III in FIG. 2;

FIG. 4 is an enlarged side view showing a drive unit of a plate holder in the rotary printing press according to the present invention.

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

FIG. 6 is a sectional view taken along line VI-VI in FIG. 2;

FIG. 7 is a sectional view taken along line VII-VII in FIG. 2;

FIG. 8 (a) shows VIII (a) -VIII in FIG.
(A) A sectional view of the line, and FIG.
It is an arrow (I) view.

FIG. 9 is a block diagram showing a configuration of a rotary printing press according to the present invention.

FIG. 10 is a flowchart showing plate exchange operation in the rotary printing press according to the present invention, showing switching between full automatic plate exchange and semi-automatic plate exchange.

FIG. 11 is a flowchart showing the operation of plate exchange in the rotary printing press according to the present invention, showing the operation in the first half of full automatic plate exchange.

FIG. 12 is a flowchart showing the operation of plate exchange in the rotary printing press according to the present invention, showing the latter half operation of full automatic plate exchange.

FIG. 13 is a flowchart showing the operation of plate exchange in the rotary printing press according to the present invention, showing the operation of semi-automatic plate exchange.

14 is a sectional view taken along the line XIIII-XIIII in FIG. 2, wherein FIG. 14 (a) shows a state where a new plate is mounted on a plate holder in a fully automatic plate changing operation, and FIG. 14 (b) shows a plate holder; Indicates an open state.

15 is a sectional view taken along line XIIII-XIIII in FIG. 2, wherein FIG. 15 (a) shows a state in which a safety cover is opened in a fully automatic plate changing operation, and FIG. Shows the state moved to the position.

16 is a sectional view taken along the line XIIII-XIIII in FIG. 2, wherein FIG. 16A shows a state in which an old plate is discharged in a fully automatic plate changing operation, and FIG. Shows the state of being inserted into the device.

17 is a sectional view taken along the line XIIII-XIIII in FIG. 2, wherein FIG. 17A shows a state in which a new plate is wound around a plate cylinder in a fully automatic plate changing operation, and FIG. It shows the state that it was turned on.

18 is a sectional view taken along line XIIII-XIIII in FIG. 2, wherein FIG. 18A shows a state in which a safety cover is closed in a semi-automatic plate changing operation, and FIG. 18B shows a state in which the safety cover is opened. Is shown.

19 is a sectional view taken along the line XIIII-XIIII in FIG. 2, wherein FIG. 19 (a) shows a state in which an old plate is removed from a plate fixing device of a plate cylinder in a semi-automatic plate changing operation, and FIG. Indicates that the old version is being discharged.

FIG. 20 is a sectional view taken along the line XIIII-XIIII in FIG. 2, wherein FIG. 20 (a) shows a state in which a new plate is inserted into the plate fixing device of the plate cylinder in the semi-automatic plate changing operation, and FIG. Indicates a state in which the new version is wound around the plate cylinder.

21 is a sectional view taken along the line XIIII-XIIII in FIG. 2, showing a state in which a safety cover is closed in a semi-automatic plate changing operation.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sheet-fed rotary printing press, 4A ... Printing unit for back side printing, 7 ... Notch, 20 ... Plate cylinder, 25 ... Side plate vise,
27: Reference pin, 34: Safety cover, 35: Sprocket, 36: Reference pin, 41: Plate holder, 43: Plate holder actuator, 45: Suction pad, 87: Safety cover drive motor, P2: New version.

Claims (2)

[Claims] 1. A plate insertion device in a rotary printing press for inserting a printing plate into a plate fixing device of a plate cylinder, and a position for inserting the held plate into the plate fixing device of the plate cylinder. , A cover that moves so that the front side of the plate cylinder can be opened and closed, and a printing plate provided on the cover and held at a position where the plate holder holds a printing plate. A plate insertion device for a rotary printing press, comprising: a reference pin for positioning the plate. 2. The plate insertion device for a rotary printing press according to claim 1, wherein the reference pin is disengaged from the printing plate by moving the cover in the opening direction. apparatus.