JPH06134973A - Press-plate feeding device of printing press - Google Patents

Abstract

PURPOSE:To feed a press plate to a plate cylinder accurately in a short time by reducing the stroke of a press-plate holding member, which feeds the press plate to the plate cylinder. CONSTITUTION:A press-plate feeding device, which feeds a new plate 92 to a holding-side plate vice 5 of a plate cylinder 3, is constituted of a sucking port 102, which moves the new plate 92 on a press-plate mounting part to a press-plate-insertion preparing position, and a sucking port 108, which moves the new plate 92 on the press-plate-insertion preparing position to the holding- side plate vice 5. In the press-plate feeding device, which feeds the new plate 92 to the holding-side plate vice 5 of the plate cylinder 3, the parts performing the following functions are provided. A first reference pin 93 regulates the mounting position of the new plate 92, which is mounted on a press-plate mounting part. A second reference pin 94 regulates the position of the new plate 92 on the press-plate-insertion preparing position. The sucking ports 102 and 108 move the new plate 92 between the mounting part and the press-plate- insertion preparing position and between the press-plate-insertion preparing position and the holding-side plate vice 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing press, in which a printing plate holding device is fixed so that both ends of the printing plate are fixed to a plate fixing device of a plate cylinder, and is supplied so as to be wound around the cylinder. It relates to the device.

[0002]

2. Description of the Related Art A plate cylinder of a printing press is provided with a plate fixing device for fixing a printing plate (hereinafter simply referred to as a plate) in a state of being wound around the circumference of the plate cylinder. That is, in the notch provided in the outer peripheral portion of the plate cylinder, a grip plate vice for holding and fixing the grip edge of the plate, and after being gripped by this, were wrapped around the peripheral surface of the plate cylinder. A plate vise device including a rear plate vise for holding and fixing the rear end of the plate extends in the axial direction of the plate cylinder.

A plate vise of this type is opened and closed by a long vise base extending in the axial direction of a cylinder and a rocking pivotally supported by the vise, which is driven by a cam or the like to rock. It has a holding plate that holds the plate between it and the vise stand. The gripping surface of the vise table is provided with a reference pin that engages with a positioning notch provided on the edge of the plate.

When mounting a plate on such a plate cylinder,
After holding the gripper plate vise facing the work surface, operate the cam to open the gripper plate of the gripper plate vise, and hold the gripper end of the plate held by hand with the open gripper plate The plate is inserted into the force table, the notch of the plate and the reference pin of the vise table are engaged and positioned, and then the edge plate of the plate is gripped by closing the edge plate.

Then, when the plate cylinder is rotated about one turn, the plate is wound around the peripheral surface of the plate cylinder, and the bottom side plate vise faces the work surface. Therefore, the bottom side plate vise holding plate is opened and closed. After holding the butt end of the plate in the butt plate vise, move the butt plate vise in the circumferential direction of the plate cylinder, and the plate will be stretched and adhere to the cylinder surface, Installation is completed.

Further, when the specifications of the printed matter are changed and the plate is replaced with the new plate from the old plate, the old plate is removed by a reverse operation to that of the mounting, and then the new plate is mounted as described above. The plates are exchanged.

However, in such conventional mounting of the plate, operation of a cam for opening and closing the plate vise, and
The rotation operation of the plate cylinder needs to be performed manually or by a push button operation, and this operation must be performed while holding the end portion of the plate by hand, which requires not only a great deal of labor and skill, but also There is also a problem in terms of work safety.

Therefore, the applicant of the present invention has proposed a plate supply device for plate exchange for automatic plate discharge and supply and rotation of the plate cylinder, which is disclosed in, for example, Japanese Patent Application Laid-Open No. 3-184848. Therefore, the outline of the configuration and operation will be described below.

This printing plate supply device is equipped with a loader in the shape of a rectangular frame which is rotatably supported by the upper end of the frame of an adjacent printing unit, and hangs down. It is configured to swing from the hanging storage state to a use state in which the leading end is brought close to the peripheral surface of the plate cylinder and is inclined.

In the loader, an old plate moving device for holding a plurality of used old plates that have been ejected from the plate cylinder and pulled upward by the old plate gripping device and sequentially moving the old plates one by one from the upper one, are used from now on. A new plate holding device for holding a plurality of new plates and a new plate moving device for sequentially feeding the new plates held by the new plate holding device to the plate cylinder one by one from the above one are used. The apparatus is provided with a plurality of suction ports arranged in parallel with each other in the left-right direction of the loader so as to adsorb the central portion of the plate that has entered the loader by the rotation of the plate cylinder and move upward by an air cylinder or the like. Further, the new plate moving device is provided with a plurality of suction ports which adsorb the new plate and move downward by an air cylinder or the like in parallel in the left-right direction of the loader.

In this case, the gripping surface of the rear-side plate vise extends in the radial direction of the plate cylinder, and the rear-side end of the plate is bent at a right angle by the plate bending machine. A plate pressing roller is provided at the tip of the loader, and the plate wound around the body circumferential surface is pressed against the plate pressing roller so that the plate comes into close contact with the body peripheral surface. A press roller or a separately provided plate press roller is configured to press the bending piece at the trailing edge side to insert it into the holding surface.

In the printing plate exchanging device thus constructed, a plurality of new plates to be used during the printing operation are stacked in the order of use and held by the new plate holding device in the loader. When exchanging the plate, after tilting the loader to the used state, when the plate cylinder rotates a predetermined angle and its rear side plate vise stops facing the lower end of the loader, the rear side plate vise is stopped. Is opened and the butt side end of the used old version pops out of the plate vise, the plate cylinder rotates and the old version enters the loader, and the old version gripping device on the loader side causes the butt side end of the old version. Is held and pulled up, and the pulled up old version is held by the old version holding device in the loader and stored in the loader.

Then, when the plate cylinder rotates by a predetermined angle and the gripping plate vise stops facing the lower end of the loader, the gripping plate vise opens and is held in advance by a new plate holding device in the loader. One of the upper layers of the plurality of new plates is adsorbed by a plurality of suction ports provided in the new plate moving device, and these suction ports are driven by an air cylinder or the like to move downward. The part is inserted into the gripping surface of the plate vise while engaging the notch with the reference pin of the vise base, and the gripping plate is closed to grip the gripping side end of the new plate.

After this, the plate cylinder makes one full turn and the new plate is wound around the cylinder surface, and the rotation of the plate cylinder stops at the position where the plate-side plate vise faces the work surface, and the plate-side plate is rotated. The end is gripped with a vise on the buttocks side. When the new plate is wound, the plate press roller is pressed against the new plate, so the new plate comes into close contact with the body circumferential surface. Since the side end is pressed, it can be securely inserted.

[0015]

However, in such a conventional apparatus, when supplying a new plate to the plate cylinder, the new plate sucked by the suction port is moved all the way to the position of the plate vise so that the holding surface of the plate vise is reached. It is to be inserted and the distance between the position where the new plate held in the loader is adsorbed and the position where the new plate is inserted into the gripping surface of the plate vise, that is, the moving stroke of the suction port becomes long, so It is difficult to accurately engage the reference pin hole with the reference pin of the plate vise and hold it.
Not only does the positioning accuracy of the plate vise decrease and the quality of the printed matter deteriorates, it takes time to feed the plate, and the tip of the new plate, which is not held by the mouthpiece, is bent, making it difficult to insert it into the gripping surface. There is a problem of becoming.

The present invention has been made in view of the above points, and a printing press of a printing machine capable of shortening the stroke of the suction port for adsorbing the printing plate and accurately positioning the plate in the plate vise. It is intended to provide a plate feeding device.

[0017]

In order to achieve such an object, the invention according to claim 1 supplies a plate supply device for supplying a plate to a plate fixing device provided on a plate cylinder. A mounting portion on which the plate is placed, a first plate moving device that holds the plate on the mounting portion and moves it to the plate insertion preparation position, and a plate holding the plate from the plate insertion preparation position The second plate moving device moves the plate fixing device.

According to the second aspect of the invention, the plate supply device for supplying the plate to the plate fixing device provided on the plate cylinder, the mounting portion for mounting the plate to be supplied, and the mounting part. A first restricting member that is arranged on the placing part and restricts the plate mounting position, a second restricting member that is arranged at the plate insertion preparation position and restricts the plate position, and a plate that holds the plate and The printing plate moving device is configured to move between the placing portion and the plate insertion preparation position, and between the plate insertion preparation position and the plate fixing device.

[0019]

When the printing plates are replaced, a plurality of printing plates to be used are stacked on the mounting portion while the positions are regulated by the first regulating member provided on the mounting portion in advance during the printing operation. Keep it. When the printing operation is completed, the loader is tilted so that the trailing edge plate vise is opposed to the leading end of the loader, and the gripping surface of the trailing edge plate vise is opened to release the old plate from the grip. In this state, the plate cylinder rotates, and the plate holding member in the loader holds the plate and ascends, whereby the old plate is held by the loader.

During the discharge of the old plate, the plate moving device in the loader holds the new plate and moves to the plate insertion preparation position, and the second plate is held by restricting the first plate. Stop at the plate insertion preparation position held by the moving device. When the old plate has been discharged, the plate cylinder stops at the position where the gripping plate vise faces the tip of the loader, and the new plate stopped at the plate insertion preparation position is either the plate moving device or the 2. The new plate is held and moved by the plate moving device, and the new plate is inserted into the grip plate vice at the grip end, and the notch for positioning is engaged with the plate pin reference pin to close the plate vice. To be added

After that, the plate cylinder makes one full rotation and the butt plate vise stops at a position facing the tip of the loader, and the butt end of the new plate is inserted into the open butt plate vise. Then, the vise on the hip side closes and the installation of the new version is completed.

As described above, when the new plate is supplied to the plate cylinder, the new plate held at the plate holding device with its position regulated by the regulating member is not supplied at once to the plate vise, but once printed. Since the plate vise is supplied and positioned after stopping at the plate insertion preparation position, the moving stroke of the plate moving member is shortened, and the new plate is accurately supplied without being bent.

[0023]

1 to 12 show an embodiment of a plate supply apparatus for a printing press according to the present invention, FIG. 1 is a schematic side view of a loader, and FIG. 2 is a schematic side view of a printing unit provided with a loader.
3 is a front view of the old version holding device, FIG. 4 is a side view of the upper half of the loader provided with the drive unit of the old version lifting device, FIG. 5 is a side view of the upper half of the loader provided with the old version lifting device, and FIG. VI in Figure 3
-VI sectional view, FIG. 7 is a side view of the plate ejection guide device, FIG. 8 is a partially cutaway front view of the plate ejection guide device, FIG. 9 is a side view near the plate ejection duct inlet, and FIG. 10 is a plate ejection entrainment prevention device. 11 is a side view of the lower end of the loader, FIG. 11 is a front view of the lower end of the loader provided with a plate discharge prevention device, and FIG. 12 is a side view of the new plate feeder.

In FIGS. 1 and 2, for example, on the left and right frames 2 of the printing unit 1 for the first color, a plate cylinder 3 and a blanket cylinder 4 that is in contact with the plate cylinder 3 are axially supported at both ends. In the outer peripheral cutout, a gripper plate vise 5 and a tail side plate vise 6 are provided extending in the axial direction of the plate cylinder 3. The gripper plate vise 5 of these has a vise base 7 and a gripper plate 8 pivotably supported by the clamp plate 7, and the gripper plate 8 is opened and closed by a driving device described later to open the gripper side end of the plate. It is configured to hold a section.

Further, the rear side plate vise 6 is provided with a vise base 9 and a holding plate 10 pivotably supported by the vise base 9, and the holding plate 10 is opened and closed by an opening / closing drive device which will be described later. It is configured to hold the hip end of the. The gripping surface of the gripping side plate vise 5 extends in the circumferential direction of the plate cylinder 3, and the gripping surface of the trailing side plate vise 6 extends in the radial direction of the plate cylinder 3.

The opening / closing drive device for the plate vices 5 and 6 will be described. An air cylinder 11 is swingably and pivotally supported by brackets 12 on upper end surfaces of the left and right frames 2, and a tip end portion of a rod 14 directly connected to a piston rod 13 of the air cylinder 11 has a frame 2 Is pivotally attached to one free end of an L-shaped lever 16 which is swingably supported by a bracket 15 on the upper end surface of the.

The lower end of the rod 17, which has its upper end pivotally attached to the other free end of the L-shaped lever 16 and hangs down, is attached to the free end of a lever 18 pivotally attached to the frame 2 side. A swing lever 19 that is pivotally attached and is integral with this lever 18.
And a cam shaft (not shown) that opens and closes the gripping side plate vise 5 and the tail side plate vise 6 are connected by a cam lever or the like (not shown) in an uncoupled state. By doing so, when the piston rod 13 of the air cylinder advances and retracts at a predetermined timing, the gripping surfaces of the gripping side plate vise 5 and the tail side plate vise 6 open and close at a predetermined timing.

Reference numeral 20 denotes a safety cover of a rectangular shape in a front view, which is formed by an upper cover 20a having an L-shaped cross section and a lower cover 20b having a linear cross section pivotally attached to the lower end thereof. The upper cover 20a is pivotally supported by a bracket 21 on the frame 2, and the lower end of the upper cover 20a is pivotally supported on the upper working end of a piston rod 23 of an air cylinder 22 which is pivotally supported on the vertical surface of the frame 2. Has been done. By doing so, the piston rod 2 of the air cylinder 22
In the state in which 3 is retracted, the safety cover 20 covers the working surface side of the frame 2 as shown by the solid line in FIG. 2, and when the piston rod 23 moves forward from this state, the safety cover as shown by the chain line in FIG. The work surface is open by opening 20.

The second-color printing unit 30 adjacent to the first-color printing unit 1 is formed in the same manner as the first-color printing unit 1, and the upper side of the frames 31 on the left and right sides of the printing unit 1 side. An air cylinder 32 is pivotally attached to the inner surface so as to be swingable, and the other end of a rod 34 whose one end is pivotally attached to the inner surface of the frame 31 is pivotally attached to the working end of the piston rod 33 thereof. . Also,
One end of another rod 35 is pivotally attached to the working end of the piston rod 33, and the other end of this rod 35 is pivotally attached to the upper end of a loader 36 described below.

Therefore, the loader 36 as a plate supply device will be described. Both ends of a loader shaft 38 are rotatably supported by brackets 37 fixed to the upper end surfaces of the left and right frames 31 via bearings 39, and the main body of the loader 36 has a vertically long plate shape. The left and right side plates 40, whose base ends are fixed to the both ends of the loader shaft 38, and the connecting stays (not shown) that connect the left and right side plates 40, are framed in a rectangular shape in a front view.

The left and right side plates 4 of the main body of the loader 36 as described above.
No. 0 is provided with recessed holes 40a at the upper end thereof, and the pulley shaft 42 on the bracket 41 side, which is bolted to the end surface of the side plate 40, is inserted into these recessed holes 40a. A pulley 43 is rotatably fitted to each of the left and right pulley shafts 42, while a motor 44 as a drive device schematically shown in FIG. 3 is attached to the center of the upper end of the loader 36. .

An endless rope 46 is stretched between the motor pulley 45 of the motor 44 and the left and right pulleys 43 with only one side hung, and the left and right pulleys are rotated by the rotation of the motor pulley 45. 43 are configured to rotate in mutually opposite directions.

Tension brackets 47 are formed on the lower ends of the left and right loader side plates 40 so as to be vertically movable and bolted, and the left and right pulleys 48 pivotally attached to the tension brackets 47. A rope 49 is stretched between the upper pulley 43 and the left and right ropes 49 driven by a motor 44 so that the inner traveling portions travel in the same direction.

6 shows an enlarged sectional view taken along line VI-VI of FIG. 3, which is designated by reference numeral 50, and is a pair of left and right guides provided with a plate 51 and a holding plate 52 for holding the inner traveling portion of the vertically traveling rope 49. The left and right plates 51 are connected by a moving bar 53, and an air cylinder 55 is fixed to a holder 54 fixed to the center of the moving bar 53.

A pinch holder 56 is fixed to the rear surface of the moving bar 53 so as to correspond to the air cylinder 55, and a lower end portion of the pinch holder 56 serves as a plate holding member formed in a hook shape. The pinch 57 is pivotally attached to the piston rod 58 of the air cylinder 55 with its free end pivotally attached.

By doing so, when the piston rod 58 of the air cylinder 55 advances, the pinch 57 in the solid line position moves to the chain line position, hooks the bent portion of the plate 59 that has entered the loader 36, and in this state. The plate 59 is configured to be pulled up by the rope 49 traveling upward.

In this device, the pinch 57 is opened and closed by the detection of the sensor. That is, the lower end portion of the loader 36 is provided with the duct 60 that expands toward the lower end, and the old plate 59 released from the grip of the plate-side plate vise 6 of the plate cylinder 3 is rotated by the plate cylinder 3 to cause the duct 60 to rotate. A light projector 61 as a fixed sensor is provided at the entry position, and a light receiver 62 as a movement sensor is provided on the pinch holder 56 side. Further, at the plate discharge completion position, a light projector 63 corresponding to the raised light receiver 62 is fixed to a stay 64 connecting the left and right side plates 40.

By doing so, when the used old plate 59 enters the duct 60 while the pinch 57 is descending, the light from the light projector 61 to the light receiver 62 is blocked, and the piston rod 58 of the air cylinder 55 is blocked. Is moved forward, and the pinch 57 hooks the old version 59. Further, when the pinch 57 rises to the plate discharge completion position, the light from the projector 63 to the light receiver 62 is blocked and the air cylinder 5
5 piston rod 58 is retracted, pinch 57 is old version 5
9 is configured to be released from hooking. 65
Is a version guide that guides the rise of the old version 59.

Next, a guide device for guiding the old plate 59 which is released from the grip of the plate vise 6 of the plate cylinder 3 and enters the duct 60 of the loader 36 will be described. That is, the loader 36
A stud 70 projects from the side plate 40 at the lower end of the roller lever 71, and a roller lever 71 is rotatably fitted to the stud 70 with its axial movement restricted by a snap ring 72. , The free end of the roller lever 71 and the side plate 40
Between the stud 73 protruding from the roller lever 71
7, a compression coil spring 74 for urging the valve to rotate counterclockwise in FIG. 7 is interposed.

Further, at the lower end of the loader 36, a pawl shaft 75
Is rotatably supported by both side plates 40 on both sides so as to be rotatable, and between the free end of the lever 76 fixed to the pawl shaft 75 and the free end of the roller lever 71. , Rod 7
Connected at 7. Furthermore, the roller lever 71 and the rod 7
A roller 79 corresponding to the bearer 3a of the plate cylinder 3 is rotatably fitted to one end of a connecting pin 78 with the plate 7, and
A plurality of claws 80 are fixed to the claw shaft 75.

Thus, when the loader 36 whose lower end is separated from the plate cylinder 3 is stored, the rollers 7
9 is separated from the bearer 3a, the roller lever 71 is rotated counterclockwise in FIG. 7 by the elastic force of the compression coil spring 74, and the rod 77 and the lever 76 are moved to the position indicated by the chain line in FIG. Are moving. Therefore, the claw 80 closes the inlet of the duct 60 as shown by the chain line in FIG. 9, but when the loader 36 is tilted from this state to the used state, the roller 7
Since 9 is pushed by the bearer 3a against the elastic force of the compression coil spring 74, the claw 80 is pushed through the rod 77 and the lever 76.
Is moved to the position indicated by the solid line in FIG. 9 to open the inlet of the duct 60.

Next, the stencil roll prevention device will be described with reference to FIGS. 10 and 11. That is, at a position near the outside of the inclined surface of the duct 60, a lever 81 formed in a dogleg shape is rotatably attached to a stay 82 that connects the left and right side plates 40, and the lower end portion thereof is provided. In the dock 83
Is exposed below the duct 60, and between the lever 81 and the block 84 on the duct 60 side, the lower part of the lever 81 is almost attached to the inclined surface of the duct 60. A compression coil spring 85 for biasing is interposed.

The upper end of the lever 81 is a block 84.
By contacting the sensor 87 fixed to the side bracket 86, the plate discharge operation is enabled. By doing so, the lever 81 contacts the sensor 87 in the normal state to enable the plate ejection operation. However, if the old plate 59 is mistakenly wound between the duct 60 and the plate cylinder 3, the old plate 59 will be discharged. Pushes the dock 83 to rotate the lever 81,
Since the upper end of the lever 81 moves away from the sensor 87, the plate discharging operation is stopped.

Further, a plurality of rollers 89 are rotatably fitted to the lever shaft 88 rotatably mounted between the left and right side plates 40 with their movement in the axial direction restricted. A plurality of roller levers 90 are fixed to the lever shaft 88, and plate pressing rollers 91 are pivotally attached to the free ends of the roller levers 90. A drive device (not shown) that rotates the lever shaft 88 at a predetermined timing is connected to the lever shaft 88, and the rotation of the lever shaft 88 presses the plate pressing roller 91 against the plate wound around the body circumference. Is configured.

Next, a new plate supply device for holding a new plate to be used and supplying it to the plate vise 5 of the plate cylinder 3 will be described. That is, the loader 36, which is a mounting unit for mounting the printing plate
A plurality of new plates 92 prepared in advance during the printing operation are stored on the front side of the plate, and the positioning notch provided in the new plate 92 is located above the stored plate pressing roller 91. And is engaged with a first reference pin 93 as a first restricting member that protrudes from the surface of the loader 36 and restricts the movement of the new plate 92 in the first stage.

Further, below the housed plate pressing roller 91, a second reference pin 94 as a second restricting member for restricting the movement of the new plate 92 at the second stage is provided on the surface of the loader 36 so as to project. ing. Inside the left and right side plates 40, an up / down air cylinder 95 having a short stroke is mounted, and its piston rod 96 and the rod 9 directly connected thereto are installed.
7, free end portions of upper and lower levers 98 and 99, which are L-shaped and pivotally attached to the side plate 40 side and pivotally attached to the side plate 40 to form a link mechanism together with the rod 97.

The other free ends of the levers 98 and 99 are pivotally attached to the upper and lower ends of the rodless cylinder 100 for plate feeding. Reference numeral 101 denotes a bracket provided by connecting movable parts of the left and right rodless cylinders 100, and a suction port 102 connected to a suction air source on its surface.
Is attached, and is configured to adsorb and move the new plate 92.

That is, when the piston rod 96 of the air cylinder 95 retracts from the state shown in the figure, the upper and lower levers 98 and 99 connected by the rod 97 synchronously rotate in the clockwise direction in FIG. The released new plate 92 is separated from the surface of the loader 36 and the notch is formed into the first reference pin 9
When the rodless cylinder 100 is operated and the piston rod 96 of the air cylinder 95 is moved, the new plate 92 moves and its notch engages with the second reference pin 94. That is, it is configured to move about half way from the above-mentioned placing portion toward the plate vise 5 and to be held at the plate insertion preparation position ready for insertion into the plate vise 5.

Further, in FIGS. 1 and 12, the air cylinders 105 are fixed to the left and right side plates 40, and the bracket 107 fixed to the working end of the piston rod 106 is connected to the suction air source. Sucker 10
8 is installed. By doing so, when the piston rod 106 moves forward while the suction port 108 in the retracted position shown by the solid line in the figure is sucking the new plate 92 with the notch engaged with the second reference pin 94, the suction port 108 is moved forward. Is moved to the chain line position and the new plate 92 is inserted into the holding surface of the holding side plate vise 5. In addition, at the time of this movement, the second reference pin 94 is configured to automatically retract into the pin hole.

The operation of exchanging a printing plate by the printing plate supply device configured as described above will be described. When exchanging the printing plate,
A plurality of new plates 92 to be used, which are prepared in advance, are stacked and stored on the front surface side of the loader 36 during the printing operation, and the notch for positioning provided in the new plate 92 is projected on the surface of the loader 36. It is held by being engaged with the provided first reference pin 93.

When the printing work is completed, when the piston rod 23 of the air cylinder 22 is advanced, the safety cover 20 covering the work surface side is opened and the work surface is opened, so that the piston of the air cylinder 32 is opened. The rod 33 is moved forward to tilt the loader 36 in the suspended storage state, and the leading end portion thereof is brought close to the peripheral surface of the plate cylinder 3.

When the loader 36 is tilted, the roller 79 resists the elastic force of the compression coil spring 74 and bears the bearer 3 of the plate cylinder 3.
Since it is pushed by a, the duct 60 as shown by the chain line in FIG.
The claw 80 that blocked the entrance of the rod
9 to move to the position indicated by the solid line in FIG. 9, and the inlet of the duct 60 is automatically opened.

After the loader 36 is set in this way, when the plate cylinder 3 is rotated by a predetermined angle and the trailing side plate vise 6 is stopped at a position facing the tip of the loader 36, the air cylinder 11 is activated. Then the grip side of the vise 6 on the hip side opens,
The old plate 59 is released from the grip, and as shown in FIGS. 2 and 9, the tail side end of the old plate 59 jumps out of the grip surface and comes into contact with the stopper 103.

Since the plate cylinder 3 rotates in this state, the old plate 5
9 is guided by the duct 60 and enters the loader 36.
At the time of entry, the claw 80 is opened as described above, so that the claw 80 is not pressed against the old plate 59 by the spring force as in the conventional case, and the old plate 59 is not damaged.

When the old plate 59 enters, the light projecting from the light projecting device 61 fixed at the entering position to the light receiving device 62 of the plate holding device stopped at the lowering position is blocked, and the light receiving device 62 is received.
Piston rod 5 of the air cylinder 55 by the signal from
As 8 moves forward, the pinch 57 hooks the bent portion of the old plate 59. At the same time, the motor 44 rotates, the pulley 43 rotates, and the inner traveling portion of the rope 49 travels upward, whereby the old plate 59 is pulled up.

When the pinch 57 holding the old plate 59 rises to the plate discharge completion position, the light from the projector 63 as a fixed sensor to the light receiver 62 as a movable sensor is cut off, the motor 44 is stopped, and the rope 49 travels. Because it will stop
As the pinch 57 holding the old plate 59 stops rising, the piston rod 58 of the air cylinder 55 retracts,
The pinch 57 releases the old edition 59 from being caught. The released old version 59 is stored in the loader 36 while being supported by the stopper 104 shown in FIG.

While the old plate 59 is being discharged, the new plate 92 is moved at the same time. That is, during the plate discharge operation, the piston rod 9 of the air cylinder 95
When 6 moves backward from the illustrated state, the levers 98 and 99 synchronously rotate clockwise in FIG. 12, the new plate 92 adsorbed by the suction port 102 separates from the surface of the loader 36, and the notch is the first reference. Since the rod 93 is disengaged from the pin 93, the rodless cylinder 100 operates and the piston rod 96 of the air cylinder 95 moves, so that the new plate 92 moves and its notch is held in a state of engaging with the second reference pin 94. To be done. Then, the new plate 92 is sucked from the suction port 102 to the suction port 108 and held, and the bracket 101 to which the suction port 102 is attached returns to the original position. Further, the rodless cylinder 100 also returns to the original state.

When the discharge of the old plate 59 is completed, the plate cylinder 3 slightly rotates to the position where the grip plate vice 5 faces the tip of the loader 36 and stops, and at the same time, the piston rod of the air cylinder 105 is stopped. Since the bracket 106 is moved forward and the bracket 107 fixed to its working end and the suction port 108 attached thereto move from the solid line position to the chain line position, the new plate 92 adsorbed by the suction port 108 moves and its gripping side end. The portion is inserted into the gripping surface of the gripper plate vise 5, and the notch of the new plate 92 engages with the reference pin.

By closing the gripping surface in this state,
The gripping side end of the new edition 92 is gripped. The new edition 9
When moving 2, the second reference pin 94 automatically retracts into the pin hole, so that the moving new plate 92 is not touched.

Next, when the plate cylinder 3 rotates, the new plate 92 is wrapped around the peripheral surface of the plate cylinder 3. At this time, since the pressing roller 89 presses the new plate 92, the new plate 92 is wrapped around the plate cylinder 3. Stick to the surface. When the bent portion formed at the bottom end of the new plate 92 corresponds to the holding surface of the bottom plate vise 6, the roller lever 9
0 swings, and the plate pressing roller 91 pivotally attached to the free end of the plate presses the bent portion of the new plate 92, so that the bent portion is pushed into the holding surface of the bottom side plate vise 6, and in this state. When the gripping surface is closed, the fold can be gripped securely.

As described above, when the new plate 92 is supplied to the plate cylinder 3, the new plate 36 held in the loader 36 by engaging the notch with the first reference pin 93 is supplied all at once to the plate vise. Instead, the notch is engaged with the second reference pin 94 once, and the positioning is performed with the notch being held in the plate insertion preparation position of the loader 36. The movement strokes of the suction port 102 and the suction port 108 are shortened, and the new plate 92 is accurately supplied without bending. Further, since the new plate 92 can be moved to the vicinity of the plate vise 5 during the discharging operation of the old plate 59,
The supply time of the new edition 92 is shortened.

When the old plate 59 enters the duct 60 as described above, the old plate 59 may try to be wound between the duct 60 and the plate cylinder 3.
When the tip of the lever pushes the dock 83 to rotate the lever 81, the upper end of the lever 81 moves away from the sensor 87,
It is safe because the plate ejection operation is stopped.

In this embodiment, the printing plate supply device according to the first aspect is provided with the second reference pin 94 at the plate insertion preparation position where the movement of the new plate 92 is temporarily stopped. If the stroke of the suction port 102 in the moving device is accurately controlled, the second reference pin 94 does not necessarily have to be provided.

Further, in this embodiment, in the printing plate supply device according to the second aspect, the new plate 9 stopped at the plate insertion preparation position.
The suction port 108 as a plate moving device for moving the plate 2 to the plate fixing device of the plate cylinder 3 is a device different from the suction port 102 as a plate moving device for moving from the mounting portion to the plate insertion preparation position. Although an example is shown, the new plate 92, which has been stopped at the plate insertion preparation position, may be moved to the plate fixing device of the plate cylinder 3 through the suction port 102.

Further, in the present embodiment, the suction ports 102, 108 are illustrated as the plate moving device for moving the new plate 92, but the invention is not limited to this. For example, it is attracted by an electromagnet to be moved or pinched by a pinching member. You may make it move.

Further, in the present embodiment, the rod cylinder 100 and the air cylinder 105 are exemplified as the driving device of the plate moving device, but a hydraulic cylinder or a motor may be used.

Further, in this embodiment, the notch on the new plate 92 side and the loader 36 are used as a regulating member for regulating the movement of the new plate 92.
Although the reference pins 93 and 94 on the side are exemplified, the present invention is not limited to this, and for example, a plurality of pins that come into contact with the edge of the printing plate may be provided.

In the present embodiment, the example in which the loader 36 is hung down to the frame 31 side when the loader 36 is in the stored state is shown. However, the fulcrum position of the loader 36 is changed so that the loader 36 hangs down to the frame 2 side. It may be stored so as to be attached to the item 3. Also, the loader may be incorporated in the frame 2 itself without separately providing it.

The first reference pin 93 and the second reference pin 9
Needless to say, 4 is provided at the same position in the left-right direction as the reference pin on the plate vise 5 side.

[0070]

As is apparent from the above description, in the invention described in claim 1, the plate supply device for supplying the plate to the plate fixing device provided on the plate cylinder and the plate for supply A placing part to be placed, a first plate moving device that holds the plate on the placing part and moves it to a plate insertion preparation position, and a plate is held to fix the plate from the plate insertion preparation position. And a second plate moving device for moving the plate to the device. In the invention according to claim 2, a plate supplying device for supplying the plate to the plate fixing device provided on the plate cylinder is supplied. A mounting portion on which the printing plate is placed, a first restricting member arranged on the mounting portion to restrict the mounting position of the printing plate, and a second restricting member arranged at the plate insertion preparation position to restrict the position of the printing plate. The regulating member, the plate that holds the plate, and the plate are placed between the mounting portion and the plate insertion preparation position, and the plate insertion preparation position. Since it is configured with the plate moving device that moves between the plate fixing device and the plate fixing device, when supplying the new plate to the plate cylinder, the new plate held by engaging the notch with the reference pin of the mounting portion , Instead of being supplied to the plate vise all at once as in the conventional case, it is temporarily stopped at the plate insertion preparation position between the mounting part and the plate cylinder, and then supplied to the plate vise to be positioned and Since the moving stroke of the plate holding member becomes short, the new plate is accurately inserted into the plate vise without bending, and the printing plate supply function is improved. Further, since the new plate can be moved to the vicinity of the plate vise during the discharging operation of the used old plate, the supply time of the new plate is shortened and the operation rate of the machine is improved.

[Brief description of drawings]

FIG. 1 is a schematic side view of a loader.

FIG. 2 is a schematic side view of a printing unit provided with a loader.

FIG. 3 is a front view of an old version holding device.

FIG. 4 is a side view of an upper half of a loader provided with a drive unit of an old version pulling device.

FIG. 5 is a side view of the upper half of the loader provided with the old version pulling device.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a side view of a plate discharge guide device.

FIG. 8 is a partially cutaway front view of the plate discharge guide device.

FIG. 9 is a side view near the entrance of the plate discharge duct.

FIG. 10 is a side view of the lower end of the loader provided with a plate discharge prevention device.

FIG. 11 is a front view of the lower end portion of the loader provided with the plate discharge prevention device.

FIG. 12 is a side view of the new edition supply device.

[Explanation of symbols]

 3 Plate cylinder 5 Holding side plate vise 6 Bottom side plate vise 36 Loader 92 New version 93 First reference pin 94 Second reference pin 100 Rodless cylinder 102 Suction port 105 Air cylinder 108 Suction port

Claims (2)

[Claims] 1. A printing plate supply device for supplying a printing plate to a printing plate fixing device provided on a plate cylinder, and a mounting part for mounting the supplied printing plate, and a printing plate on the mounting part. A first plate moving device that holds the plate and moves it to the plate insertion preparation position; and a second plate moving device that holds the plate and moves it from the plate insertion preparation position to the plate fixing device. A plate supply device for a printing press, which is provided. 2. A printing plate supply device for supplying a printing plate to a printing plate fixing device provided on a plate cylinder, and a mounting part for mounting the supplied printing plate, and a printing device arranged on this mounting part. A first restricting member that restricts the plate mounting position, a second restricting member that is arranged at a plate insertion preparation position and restricts the position of the plate, and a plate that holds the plate and uses the plate as the above-mentioned mounting portion. Between the plate insertion preparation position,
A plate supply device for a printing press, comprising: a plate moving device that moves between the plate insertion preparation position and the plate fixing device.