JPS5830818B2 - Plate feeding/discharging method and device in sheet-fed printing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plate feeding/discharging method and device for a sheet-fed printing apparatus.

Normally, the plate feeding and plate discharging devices of sheet-fed printing machines are configured separately, and are located on opposite sides of each other with the plate cylinder as the border, so they take up a lot of space. Not only is it difficult to remove, but it is also difficult to repair and adjust the plate cylinder and plate discharging device, which are located deep inside the printing device.

In addition, in such a conventional plate feeding device, since the original plate after etching is directly gripped by the gripper of the rotating plate cylinder, it is difficult to time the transfer of the original plate, and the receiver is prone to mistakes in the transfer. is likely to occur.

Further, when supplying the original plate, this can be done manually, but this operation is relatively complicated and difficult.

In other words, when supplying the original, it is necessary to uniformly align the original, especially its leading edge, at a predetermined position. This is relatively difficult to do, and often the originals are not aligned and set in the correct position, so the subsequent process of gripping the original onto the plate cylinder is not done exactly as required, and therefore the printing process is not carried out satisfactorily. There is also the problem that there is no one.

In view of the above circumstances, an object of the present invention is to detect the introduction of the original by stopping the original at an original detection position before transferring the original to the crossing wheel along the first direction, and to detect the introduction of the original based on the detection result. is transferred in a first direction to guide the original to a transfer wheel that rotates in the opposite direction to the rotation direction of the plate cylinder, and the transfer wheel securely grips the original and then lifts the original onto the plate cylinder. After printing is completed, the original from the plate cylinder is firmly gripped by the crossing wheel, and the original is lifted to the original discharge side almost along the second direction, which is the opposite direction to the first direction. The present invention provides a method and device for feeding and discharging plates in a sheet-fed printing device.

Hereinafter, specific examples of the present invention will be explained based on the drawings.

1 and 2 show the overall internal structure of a plate feeding/discharging device 1 of the present invention, which is detachably mounted on a body frame 3 of a sheet-fed printing device 2. As shown in FIG.

4 indicates a plate cylinder of the plate cylinder mechanism 5, and 6 indicates a blanket cylinder adjacent to the plate cylinder 4.

The plate feeding/discharging device 1 is roughly divided into a frame 11, a crossing wheel 12, a stopper means 13, a detection means 14, a feed roller means 15, an opening/closing mechanism 16, a clutch mechanism 17, and a discharged plate transfer mechanism 18. A phase lock mechanism 19 is provided to lock the phase between the transfer wheel and the plate cylinder when the plate feeding/discharging mechanism is attached to and removed from the main body frame.

The transfer wheel has a suitable diameter (for example, one-half the diameter of the plate cylinder) and is configured to make two revolutions per revolution of the plate cylinder, and has a shaft 21 pivotally mounted on the frame 11; It consists of a plurality of disks 22 attached to this shaft, and a gripper 23 supported by the disks and consisting of an anvil 23a, a claw 23b, a claw shaft 23c, and the like.

The original is carried into the apparatus 1 from a paper supply mechanism (not shown) of the printing apparatus via the table 24, and the carried original is brought into contact with the stopper 25 of the stopper means 13 at the end of the table 24 (original detection position). will be temporarily stopped.

The hook-shaped stopper 25 is attached to a shaft 26, which is interlocked with a shaft 27 rotatably supported on the frame 11 via links 28, 29, and 30, and further connected to the shaft 27. link 31 is link 3
2 to a solenoid 33, and these constitute an original stopper means 13.

This stopper means 13 is configured to be released by the operation of a solenoid 33, and is normally in a stopped state by a spring 34 connected to the end of the link 31 to which the link 32 is not connected.

The table 24 is a guide member having a groove-shaped track, and the actuating member 35 in contact with the upper surface is used to detect whether or not the original is carried into a predetermined position (original detection position) on the table. The detection means 14 is attached to a limit switch (not shown), and the operating member 35 and the limit switch constitute the detection means 14.

When the original plate is transferred on the table 24, the plate surface is facing downward, and at the position where the original plate is stopped by the stopper 25, the leading end is held between the rollers 41 and 42.

The rollers 41 and 42 constitute a feed roller means 15 that feeds the original to the crossing wheel 12 based on a plate feeding command (described later).
A gear 46 is connected to which power is transmitted via a gear 43 and idler gears 44 and 45, which are attached to the engine.

Further, the roller 42 is provided with a gear 47 that meshes with a gear 46, and the roller 41 and the roller 42 rotate at a constant speed in mutually opposite directions.

The rollers 41 and 42 are ordinary rubber rollers, and the driving side roller 41 is fixedly placed at a position where it comes into contact with the tip of the original that has been carried into the original detection position, and the driven side roller 42 is located below. Sponge 5 of etching mechanism 50
1 and is also in contact with the squeezing roller 52.

The roller 42 and the aperture opening 52 are rotatably supported by a support member 54, and one end of the support member 54 is rotatably supported by a support shaft 55 fixed to the frame 11.
The other end of the spring 56, one end of which is fixed to the frame 11, is locked to the other end, and the other end of the support member is always pulled upward.

Cams 57 are provided at both ends of the shaft 27, and these cams abut against the upper surface of the other end of the support member 54.

When the stopper 25 is at the position where the original is stopped, the cam 57 pushes down the other end of the support member 54 against the spring 56, so that the roller 42 is positioned away from the roller 41.

The rotation of the link 31 when the stopper means 13 is released causes the shaft 27 and the cam 57 to rotate, whereby the other end of the support member 54 is pulled by the spring 56 and rotates upward, and the roller 42 is rotated upward. 41 to enable feeding of the original plate.

The feed roller means 15 is constituted by the pair of rollers 41, 42, gears 44, 45, 46, 47 for rotating them, a support member 54, a cam 57, and the like.

In FIG. 1, the gripper 23 of the transfer wheel 12 is in a position to transfer the original to the plate cylinder 4 of the plate cylinder mechanism 5, but during printing, it is on standby at a position 49 shown by imaginary lines, and the gripper 23 of the transfer wheel 12 The original plate sent out by the rollers 41 and 42 is held at its tip by a waiting gripper.

An etching mechanism 50 is arranged below the roller 42 of the feed roller means 15, and this etching mechanism 50 consists of an underframe 61 fixed to the frame 11 and a frame 62 placed on the underframe. , a liquid tank 63 formed within the frame and containing an etching solution, and a mounting member 6 disposed within the frame to be immersed in the etching solution.
It consists of a sponge 51 that is prevented from being removed from both sides by screws 4 and screws 65 that fix a frame 62 to an underframe 61.

By arranging the etching mechanism 50 below the rollers 42, the etching process is performed at the same time as the original is passed between the rollers 4L42.

In the present invention, it is not essential to dispose this etching mechanism in the plate feeding/discharging device 1, and the original plate after etching may be supplied to the plate feeding/discharging device.

In FIG. 2 and FIG. 3, reference numeral 16 indicates the crossing wheel 1.
2 shows the opening/closing mechanism of gripper 23 of gripper 2.
3 is (1) when the receiver picks up the original plate sent through the roller 4L42, (11) when feeding the plate to the gripper of the plate cylinder 4,
611) When the receiver picks up the original plate discharged from the plate cylinder 4, 1■
In order to eject the original plate, it must be opened and closed four times when releasing the original plate.

The gripper 23 is an anvil 23 fixed to the disk 22.
a, and four claws 23b that hold the original plate together with this anvil.
, a pawl shaft 23c on which each pawl is attached and rotatably supported by the disk 22, and a roller 71a supported at approximately the center by this pawl shaft and at both ends.

The arm 72 having a diameter 71b and the claw 23b are attached to the anvil 23.
The spring 73 is fitted into the claw shaft to press the claw to the position a.

Note that the gripper of the plate cylinder, which will be described later, has the same structure as the gripper 23.

The first cam 75 is a cam for iJ when the original plate holder is removed, and is attached to the frame 11.
come into contact with.

The second cam 76 is a cam for plate feeding (11), the third cam 77 is a cam for plate discharging (ill), and the second cam and third cam are attached to the cam member 78 or integrally formed. and comes into contact with the rollers 71b.

The cam member 78 has a cylindrical shape and is fitted onto the shaft 21, and has V-shaped grooves 79 formed at two locations on its outer peripheral surface.

Reference numeral 80 denotes a plate spring having a ■-shaped protrusion that can fit into the ■-shaped groove 79, and both ends of the plate spring are attached to the disk 22 via pins, and the spring action of this plate spring causes the cam member 7 to
8 is configured to rotate together with the shaft 21.

The fourth cam 81 is a cam for release (■), and the first cam 7
Like No. 5, it is attached to the frame 11 and comes into contact with the rollers 71a.

The gripper 23 is opened and closed by the four cams as described above, but instead of opening and closing four times for each rotation of the transfer wheel 12, there is a long printing time between plate feeding (11) and plate discharging (6). enters.

That is, the first cam 75 and the second cam 76 act to feed the plate in response to a plate feeding command, and after the printing operation, the third cam 77 issues a plate discharge command.
, the fourth cam 81 must be used to eject the plate.

Therefore, it is necessary to rotate the transfer wheel 12 in synchronization with the plate cylinder 6 only during plate feeding and plate discharge, and to keep the transfer wheel 12 from rotating while only the gear 43 rotates during printing.

Therefore, in order to perform these operations in the device of the present invention, the second
It is configured such that the positions of the cam 76 and the third cam 17 can be changed.

Reference numeral 85 denotes a plate for changing the cam position, and this plate is attached to the side surface of the cam member 78, and a recess 86 for plate feeding and a recess 87 for plate discharging are formed in two places on its outer peripheral surface. .

A locking member 90 is disposed outside the plate 85, and this locking member is attached to the frame 11 via a pin 91, and a locking protrusion at the tip is held by a spring 92 fitted to the pin 91. 90a is the recess 86 of the plate 85
or 87.

When the disk 22 rotates, the cam member 78 and the plate 85 also rotate together due to the action of the leaf spring 80, but the locking protrusion 90a of the locking member 90 fits into the recess 86 or 87 of the plate 85 due to the action of the spring 92. Then, the rotation of the cam member and the plate is prevented against the spring action of the leaf spring 80.

Therefore, only the disk 22 continues to rotate, allowing the rollers 71b of the gripper 23 to come into contact with the second cam and the third cam.

Since the original plate is transferred and removed from the transfer wheel 12 to the plate cylinder 4 at approximately the point of contact between the two, the stopping positions of the second cam 76 and the third cam 77 due to the operation of the locking member 90 are as follows. Almost the same location.

However, the gripper when feeding the plate only releases the original, and the gripper when discharging the plate must hold the original in its grip, so the shape of the cam is slightly different as shown in FIG. 3 due to such operational differences.

A protrusion 94 shown in FIGS. 2 and 3 is provided on the side surface of the locking member 90, and this protrusion is kicked by a release member 95 provided on the side surface of one disc 22.

That is, the locking protrusion 90a of the locking member 90 is connected to the plate feeding recess 86.
After engaging with the second cam 76 to open and close the gripper 23 (plate feeding operation), when performing a plate discharge operation after printing, the third cam 77 must be placed at a position necessary for plate discharge.

Therefore, after the roller 71b comes into contact with the second cam 76, the release member 95 immediately kicks the protrusion 94, rotates the locking member 90 against the spring 92, and connects the locking protrusion 90a and the recess 86. Release the engagement.

During printing, the transfer wheel 12 does not rotate as will be described later, so it stands by in the state shown in FIG. 3.

When a master discharge command is issued, the transfer wheel 12 rotates, the locking protrusion 90a engages with the master discharge recess 87, and the third cam 77 is placed at a predetermined position to enable the master discharge operation.

As described above, the transition wheel 12 only rotates during plate feeding and plate discharging, and it would be a problem if it rotated during printing.

The transition wheel 12 receives power from the plate cylinder through the gear 43 and transmits the rotation of the gear 43 to the roller 42 to transfer the original before plate feeding, so power is transmitted between the shaft 21 and the gear 43. A clutch mechanism 17 is provided which is switchable and synchronizes the gripper of the plate cylinder and the gripper of the transfer wheel.

The clutch mechanism 17 is shown in FIGS. 1, 2, and 4, and is turned on by a solenoid 101 excited by electrical commands for plate feeding and plate discharging.

The solenoid 101 is attached to the main body frame 3 and connected to the bar 104 via links 102 and 103, and when excited, the bar 104 is connected to the spring 1.
05I and move it in the direction of arrow 106.

107 is a bell crank-shaped claw member rotatably supported by the main body frame 3 via a pin 108, and the bar 104 is provided to push a pin 107b provided at one end of the claw member 107. Bar 104
Due to the pushing action, the claw member rotates against the spring 107c.

A claw portion 107a is formed at the other end of the claw member 107.

A hook 110 is attached to a support member 111 keyed to the end of the shaft 21 via a pin 109, and this hook 110 has a claw portion 110a formed at one end thereof that can engage with the claw portion 107a. A protrusion 110b is formed at the other end.

Reference numeral 112 denotes a wheel to which a gear 43 is attached, and this wheel 112 is rotatably fitted to the shaft 21.
A recess 113 is formed at one location on the outer peripheral surface.

This recess is provided to engage with the protrusion 110b of the hook 110, and when the hook 110 is disengaged from the claw member 107 by a spring (not shown), the protrusion 110b engages with the recess 113. engage.

Due to this engagement, the rotation of the gear 43 is caused by the rotation of the wheel 112,
It is transmitted to the shaft 21 via the hook 110 and the support member 111, and drives the crossing wheel 12.

Further, the engagement between the protrusion 110b and the recess 113 is only at one point, and the phase of the gear 43 with respect to the shaft 21 is always constant, so that the gripper of the plate cylinder 4 and the gripper of the crossing wheel face each other at the original transfer position. Rotate synchronously.

When the solenoid 101 is demagnetized, the claw member 107 rotates counterclockwise in FIG. Wheel 1
12 and the protrusion 110b of the hook 110 is released, and power transmission from the gear 43 to the shaft 21 is released.

As shown in FIG. 1, the plate discharge transfer mechanism 18 is arranged below the transfer wheel 12, and the transfer wheel once takes the original plate from the plate cylinder 4, and the plate transfers the removed original plate to the pan 12.
1.

Reference numeral 122 denotes a roller that clamps and sends out the original that has been discharged together with the disk 22 of the transfer wheel 12, and a shaft 123 on which this roller is attached has bearings at both ends of an eccentric member 124 that is rotatably supported by the frame 11. This eccentric member 124 is supported via the transfer wheel 12 and the shaft 1.
23 is provided so that the parallelism thereof can be adjusted.

The gripper 23 of the transfer wheel 12 opens and closes under the action of the third cam 77, picks up the original from the gripper of the plate cylinder, and after the tip of the original is held between the disc 22 and the roller 122, the gripper 23 is opened by the fourth cam 81 to release the original from its grip.

After that, the original is sent by the disk and the rollers, is swept off the disk 22 by the upper guide member 12γ, and is stopped by the lower guide member 128, and the rollers 130, 1
Sent to between 31 and 31.

Power is transmitted to the upper roller 130 from the gear 43 of the crossing wheel via the idler gear 132.
The gear 133 of the upper roller 130 that is meshed with the roller 2 is meshed with the gear 134 of the lower roller 131, so that the upper roller 130 and the lower roller 131 are rotating synchronously.

An upper roller 130 and a gear 133 are attached to the shaft 135, and a lower roller 131 and a gear 134 are attached to the shaft 136, and both shafts are pivotally connected to the frame 11.

Each of the rollers 122, 130, 131 is provided so as to be able to adjust its position in the axial direction with respect to each axis, and two of each are provided, but more may be provided.

The original forcibly fed by the rollers 130 and 131 is discharged onto the pan 121 while being guided by upper and lower guide members.

The pan is attached to the frame 11 via bolts.

In addition, in order to minimize the possibility that the surface of the disk 22 is contaminated by dirty discharged plates after printing, the outer circumference of the disk 22 has a small diameter approximately half a circle forward from the gripper position, as shown in FIG. is formed.

The phase lock mechanism 19 will be explained based on FIGS. 2, 4, 5, and 6.

This phase lock mechanism 19 is used when removing the plate feeding/discharging device 1 from the main body frame 3 and repairing or adjusting the interior of the printing device, especially the plate cylinder mechanism 5 or the transfer wheel 12. , is a mechanism for locking the phase of the transition wheel and the phase of the gear 43 with respect to the frame 11. By providing this phase locking mechanism, only the phase of the gear of the plate cylinder mechanism can be adjusted when the plate feeding/discharging device is installed. It is now easy to do just by doing this.

The reference point for the phase of the shaft 21 of the transfer wheel 12 and the phase of the gear 43 is the groove 152 of the phase determining member 152 rotatably supported on the frame 11 via a pin 151.
It is a.

A spring 153 is provided between the phase determining member 152 and the frame 11 at its tip, and a force is applied to rotate the phase determining member 152 counterclockwise in FIG. 4 about the pin 151.

This phase determining member 152 has an inner peripheral surface 152b surrounding the outer periphery of the support member 111 which is keyed to the shaft 21 with a wide gap.

A latch 155 is rotatably supported on the support member 111 on a plane passing through the axis of the shaft 21, and this latch has locking protrusions 153a and 155b.

155c is formed.

The first locking protrusion 155a is connected to the phase determining member 152 during printing.
(the state shown in FIG. 2) is in contact with the inner circumferential surface 152b of.

The second locking protrusion 155b is on the same side as the first locking protrusion 155a and has a smaller protrusion amount than the first locking protrusion 155a, and is formed so as not to contact the phasing member in the state shown in FIG. It has a shape that can be inserted into the groove 152a.

In addition to the recess 113, the wheel 112, which is equipped with the gear 43 and fitted onto the shaft 21, has a third portion of the latch 155.
A locking groove 156 is formed in which the locking protrusion 155c engages.

When this locking groove 156, the latch 155, and the groove 152a are positioned in a straight line, the second locking protrusion 155b
At 23, the latch 155 becomes rotatable so that the third locking protrusions 155c are inserted into the locking grooves 156, respectively.

The rotatable state of the latch 155 is a state that always occurs during printing, and when the latch is rotated, the support member 111 and the wheel 112, and thus the shaft 21 and the gear 43, are locked to the phasing member 152. However, the latch 155 is not rotated during printing.

The latch 155 rotates when the phase determining member 152 rotates about the pin 151 under the action of the spring 153, so that the inner circumferential surface 152b of the latch 155 rotates around the pin 151.
This is done by pressing 55a.

The main body frame 3 is provided with a pin 151, and when the plate feeding/discharging device 1 is mounted on the main body frame, the outer peripheral surface 152c of the phase determining member 152 is in contact with this pin 157, as shown in FIG. The latch 155 is located at the solid line position.
If the plate feeding/discharging device is removed while the plate is in a rotatable state, the phase determining member 152 is disengaged from the pin 157, and the phase determining member rotates to the state shown by the imaginary line in FIG. , thus rotating the latch 155.

A cam plate 160 is provided on the gear 43 of the transfer wheel, and this cam plate has a convex portion 160a at one location.
is formed.

Further, the gear 4a of the plate cylinder 4 is also provided with a cam plate 161, and this cam plate has a recess 161a that is displaced by 180 degrees from each other and that can be engaged with the projection 160a.
are formed in two places.

The convex portion 160a of the cam plate 160 is connected to the wheel 11.
It is arranged at a certain angle with the locking groove 156 of No. 2,
When the locking groove is in the position where it engages with the launch, the protrusion 160
Preferably, a is located on a line connecting the shaft 21 and the axis of the plate cylinder as shown in FIG.

The engagement between the convex portion 160a and the concave portion 161a is performed by rotating the plate cylinder 4.

The above configuration of the phase lock mechanism 19 is sufficient if the internal mechanisms of the sheet-fed printing device, such as the plate cylinder mechanism, are to be repaired or adjusted; In that case, the crossing wheel may be unlocked and rotated.

If the plate feeding/discharging device is attached to the main body frame with the transition wheel rotated and the phase shifted, printing will not be possible, so a means is provided to prevent this.

The error attachment prevention means 165 includes an obstacle member 168 that is loosely fitted onto a pin 166 implanted in the main body frame 3 and whose rotation in one direction is prevented by a pin 167 also implanted in the main body frame. A slide whose one end is rotatably supported by the phase determining member 152 via a pin 169 and whose other end is slidably provided in the longitudinal direction by a guide member 170 (shown in FIG. 4) provided on the frame 11. It consists of a par of 171.

This slider 171 is moved to position 171a by rotating the phase determining member to the state shown in the imaginary line shown in FIG.
Its end at is moved to position 171b.

A protrusion 168a is formed on the obstacle member 168, and comes into contact with the end of the slide par 171 when it is at position 171a.

When the transition wheel and gear are out of phase with the phase determining member and the phase determining member 152 is in the state shown by the solid line in FIG. The part contacts the protrusion 168a of the obstacle member 168, but since the obstacle member can rotate, it can be removed. Since the obstacle member is prevented from rotating by the pin 167, it cannot be mounted.

Therefore, this device cannot be installed unless the three members, the transfer wheel, gear, and phase determining member, are aligned and the phase determining member is rotated to move the end of the slider to position 171b. If the three members are attached to the same position, the phases of the three members match.

The operation of attaching and detaching the device 1 using the phase lock mechanism 19 will be briefly explained.

During printing, the protrusion 110b of the hook 110 is connected to the wheel 112.
The supporting member 111 is rotating together with the gear 43, and the solenoid 1 is activated by the command to finish printing.
01 is demagnetized and the clutch mechanism is disengaged.

Thereby, the claw member 107 locks the hook 110 into the wheel 1.
12 so that the rotation of the gear 43 is not transmitted to the shaft 21.

The engagement position of the claw part 107a of the claw member 107 and the hook part 110a is always constant, and the second locking protrusion 155b of the latch is supported by the support member in the engaged state.
is facing the groove 152a of the phase determining member 152.

Next, the gear 43 is slightly rotated to bring the locking groove 156 of the wheel 112 into contact with the third locking protrusion 155b of the latch.

When the device 1 is removed from the main body frame 3 in this state, the phase determining member disengages from the pin 157 and rotates, and the latch locks the support member 111 and the wheel 112 to the phase determining member 152.

If the transition wheel 12 is not out of phase, i.e. the latch is locked, the cam plate 16 of the plate cylinder
The cam plate 160 of the wheel crosses the recess 161a of 1.
After adjusting the device 1 so that it faces the convex portion 160a,
is attached to the main body frame 3.

If the transition wheel 12 is out of phase, the device is mounted after rotating the transition wheel and locking the latch.

Similar operations may be performed when the phase of the gear 43 is shifted instead of the transfer wheel.

It is preferable that the device 1 be removed only when the claw member 107 is engaged with the hook and the support member 111 is stopped.

The plate cylinder 4 of the plate cylinder mechanism 5 is provided with a gripper 202, and is also provided with an opening/closing mechanism 317 for opening and closing this gripper during plate feeding and plate discharge.

This opening/closing mechanism 317 will be explained next. A circular cam member 204 is fitted into one end of the cylinder shaft 203 of the plate cylinder 4, and rotates together with the plate cylinder, and this cam member includes a plate feeding cam 205 and a plate discharging cam 206. It is installed.

The relationship between the plate cylinder 4 and the cam member 204 is as follows:
The disc 22 and the cam member 78 of No. 2 are similar, and although not shown, they rotate together due to engagement between a leaf spring and a V-groove.

Furthermore, there are two recesses 20 on the outer peripheral surface of the cam member 204.
7.208 is formed.

210 is a claw member rotatably attached to the side surface of the main body frame 3 via a pin 211; one end is provided with a claw portion 210a that engages with the recessed portions 207 and 208, and the other end is provided with a pin 212. The claw portion 210a is connected to the cam member 20 by a spring 214 fitted to the pin 211.
It's pushing towards 4.

The recess 207 is for plate feeding, and the claw member 210
When the claw portion 210a of the plate is engaged with the recess 207, the cam member 204 stops and only the plate cylinder 4 continues to rotate.In this state, the plate feeding cam 205 passes over the gripper 202 and the wheel
From 2 onwards, the receiver is placed in a position (the position shown in Figure 1) where it performs the opening/closing operation of gripping the original to be taken, and the roller 202c of the arm 202b attached to the shaft 202a of the gripper.
comes into contact with the cam 205.

On the other hand, the recessed portion 208 is for discharging the plate, and the claw portion 208 is for discharging the plate.
When the plate 10a is engaged with this recess, the plate ejecting cam 206 is placed at a predetermined position required for plate ejection, and the gripper 202 is caused to perform an opening/closing operation for plate ejection.

The cams 205, 206 are the second cam 76 of the transition wheel.
Similar to the third cam 77, the position is switched between plate feeding and plate discharging, and the claw member 210 for setting the position of each cam must change the recessed portion with which it engages in order to switch the cam.

Furthermore, if the cam member 204 is stopped during printing, the gripper holding the original will open and printing will not be possible, so a mechanism is provided to disengage the claw member 210.

Reference numeral 220 denotes a release cam attached to the plate cylinder, which contacts the pin 212 of the pawl member and rotates the pawl member against the spring 214.

221 is a release arm fixed to the support shaft of the link 103 of the clutch mechanism 17, and constitutes a part of the clutch mechanism.

The free end of the release arm is in contact with the end of the pawl member where the pin 212 is provided, and there is not enough pressing force to rotate the pawl member when the pawl portion 210a is engaged with the recess. The pawl member can be maintained in an unengaged state.

That is, the release cam 220 releases the claw portion 210a from the recess.
The release arm 221 is provided to maintain the release state of the claw member.

When the solenoid 101 is energized during plate feeding, the claw member 210
The claw portion 210a engages with the rotating plate feeding recess 207,
Place the cam 205 in place.

After or before plate feeding is completed and the solenoid 101 is demagnetized, the pawl member 210 that has stopped the cam member 204 is released by the release cam 220, and the demagnetization of the solenoid causes the release arm 221 to maintain the release of the pawl member. .

During plate discharging, the solenoid 101 is energized and demagnetized in the same manner as during plate feeding, so the claw portion of the claw member 210 engages with the plate discharging recess 208 to dispose the cam 206 at a predetermined position.

Since the claw member 210 is released only by the release cam 220 after plate feeding, the recess 207 and the release cam 220 after release are
The positional relationship with the plate feeding recess 20 is constant, and the claw part 210a of the claw member 210 moves into the plate feeding recess 20 by energizing the solenoid during plate discharge.
7, the release action of the release cam 220 works and the engagement does not occur, thus ensuring that the plate ejecting recess 20
8.

Similarly, when feeding a plate after plate discharge, the release cam 220 after plate discharge is in a position to prevent the claw part 210a from engaging with the plate discharge recess 208, so that the claw part 210a can only be used as the plate feeding recess 207. Not engaged.

The shape of the plate feeding cam 205 and the plate discharging cam 206 are different in shape because when the plate is fed, the claws of the gripper 202 are opened and closed at the contact point with the gripper 23 as shown in FIG. 1, and when the plate is discharged, This is because the claws of the gripper 202 begin to open from the contact position.

Further, the claw member 210 is connected to the clutch mechanism 17 of the device 1.
Therefore, the solenoid 101 is arranged on the main body frame 3, and the bar 104 and the claw member 107 are separably abutted to transmit the power of the solenoid to the claw member 107. However, if a separate solenoid is provided for actuating the pawl member 210, the solenoid 101 is connected to the frame 11.
The entire plate feeding/discharging device 1 can be placed on the frame 11.

As described above, in the method and apparatus of the present invention, before the original is transferred to the crossing wheel along the first direction, the original is stopped at the original detection position, the introduction of the original is detected, and based on the detection result. The original plate is guided to the crossing wheel, the original plate is gripped securely by the crossing wheel, the original plate is guided to the plate cylinder so that the plate cylinder can be gripped securely, and the receiver is passed, and after the printing process,
The original from the plate cylinder is securely gripped by the crossing wheel while flowing toward the original discharge side and discharged, so that the original can be uniformly aligned in a predetermined state, so that the original is gripped by the crossing wheel and the plate cylinder reliably. It is possible to perform the printing process accurately, and as a result, the printing process and the plate discharge process can be performed accurately.

Particularly, as shown in the above embodiment, when a plurality of grippers are provided on each of the transfer wheel and the plate cylinder and grip the leading edge of the original, it is possible to uniformly align the leading edge of the original. , the original can be reliably gripped by each gripper.

Furthermore, by providing a phase locking mechanism between the frame of the plate feeding/discharging device and the main body frame of the printing device, it is very easy to install the plate feeding/discharging device to the printing device, and the plate cylinder and transfer cylinder can be easily installed. It is possible to reliably match the phase with the

Furthermore, by separating the plate feeding/discharging device from the main body frame of the printing apparatus and making it detachable, repair and maintenance thereof is facilitated, and its management and manufacture are also simplified.

[Brief explanation of the drawing]

The drawings show a specific example of an apparatus for carrying out the plate feeding/discharging method of the present invention, in which Fig. 1 is a cross-sectional explanatory view showing the internal structure, Fig. 2 is a plan development view of the apparatus shown in Fig. 1, Figure 3 is an explanatory diagram of the opening/closing mechanism, Figure 4 is an explanatory diagram showing the main parts of the clutch mechanism, Figure 5 is an explanatory diagram of the entire phase lock mechanism, and Figure 6 is the main part of the phase lock mechanism @ first time. be. 1... Plate feeding/discharging device, 2... Sheet-fed printing device, 2... Body frame, 4...
Plate cylinder, 5... Plate cylinder mechanism, 6... Blanket cylinder, 11... Frame, 12...
... Transition wheel, 13 ... Stopper means, 14 ... Detection means, 15 ... Feed roller means, 16 ... Opening/closing mechanism, 17.・・・・・・
・Clutch mechanism, 18...Discharged plate transfer mechanism, 19
...Phase lock mechanism, 50...Etching mechanism.

Claims (1)

[Claims] 1. Before transferring the original to the crossing wheel along the first direction, the original is stopped at an original detection position to detect the introduction of the original, and based on the detection result, the original is transferred to the plate and cylinder. The original plate is guided to a transition wheel that rotates in the opposite direction to the rotation direction of the printing plate, and the original plate is firmly gripped by this transition wheel, and then guided to the plate cylinder, and the original plate is set on the plate cylinder. After printing is completed, the original plate on the plate cylinder is is reliably gripped by a transfer wheel that rotates in the opposite direction to the rotational direction of the plate cylinder, and is extended toward the original plate ejection side, and the original plate is moved approximately along a second direction that is opposite to the first direction. A plate feeding/discharging method in a sheet-fed printing device that discharges the original plate on the discharge side. 2. A stopper means for stopping the incoming original at the original detection position, a means for detecting that the original has been carried in at the original detection position, a crossing wheel that includes a gripper that grips the tip of the original, and a front end of the original. The plate cylinder rotates the cross-over wheel so as to rotate the gripper of the cross-over wheel, which rotates the gripper of the cross-over wheel, and the plate cylinder rotates the cross-over wheel so as to rotate the gripper of the cross-over wheel. a feed roller means for transporting the original; when the original is fed, when the gripper is delivered to the gripper of the plate cylinder; when the original is taken from the gripper of the plate cylinder; and when the original is discharged from the receiver. A transfer wheel opening/closing mechanism that opens and closes the gripper of the wheel, a plate cylinder opening/closing mechanism that opens and closes the gripper of the plate cylinder when receiving and taking an original from the transfer wheel and passing the original to the transfer wheel, and a plate cylinder opening/closing mechanism that operates according to a plate feeding command. The opening/closing mechanism of each gripper is actuated to rotate the transfer wheel and transfer the original gripped by the transfer wheel to the plate cylinder, and the opening/closing mechanism of each gripper is operated in response to the plate ejection command to rotate the transfer wheel and transfer the original gripped by the plate cylinder. a clutch mechanism that operates the opening/closing mechanism of each gripper to discharge the original through a wheel; and a discharge transport mechanism that transports the master to a discharge position after discharge is completed. Plate/plate ejecting device. 3 The opening/closing mechanism of the plate cylinder includes a cam member that has recesses in two places on the outer peripheral surface and is provided at one end of the cylinder shaft, and a cam member that is attached to the cam member and that receives and takes the original plate from the gripper of the transfer wheel. A plate feeding cam that sometimes opens and closes the gripper,
a plate discharging cam that is attached to the cam member and opens and closes the gripper when passing the original to the gripper of the splitting wheel after printing; The cam member has a pawl member that disengages the pawl portion that engages with the recessed portion, and a release cam that is attached to the plate cylinder and releases the engagement between the pawl member and the recessed portion of the cam member. When the plate feeding cam is engaged with one of the recesses of the member, the plate feeding cam is in a position to open and close the gripper, and when the pawl member is engaged with the other recessed part, the plate discharging cam is in a position to open and close the gripper. In the sheet-fed printing apparatus according to claim 2, the cam is disposed, and the pawl member is configured to be able to engage with the cam member by actuation of a clutch mechanism. Plate/plate ejecting device. 4. The crossing wheel consists of a shaft, a plurality of disks attached to the shaft, a gripper supported on the outer periphery of the plurality of disks, and a gear attached to the shaft. , a plate feeding/discharging device in a sheet-fed printing apparatus according to claim 2, wherein in each of the discs, an approximately half-circumferential portion on the rear side in the rotational direction of the gripper has a larger diameter than the other portions. . 5. The opening/closing mechanism of the transition wheel includes a first cam that opens and closes a gripper to grip the original supplied to the transition wheel;
A second cam opens and closes the gripper to transfer the original from the transfer wheel to the plate cylinder, a third cam opens and closes the gripper to take the original from the plate cylinder to the transfer wheel, and releases the original from the transfer wheel. A fourth cam, a second cam, and a third cam that open and close the gripper are arranged inside the rotation orbit of the gripper of the crossing wheel, and are fitted on the shaft of the crossing wheel and in contact with the crossing wheel. a rotatable cam member; a plate that is attached to the side surface of the cam member and has a plate feeding recess and a plate discharging recess on its outer peripheral surface; It consists of a locking member that can be engaged with the recess, and a release member that is provided on the side surface of the transfer wheel and that rotates the locking member that is engaged with the recess of the rib plate to release the engagement. The first cam and the fourth cam are located outside the rotation orbit of the gripper of the transfer wheel, and when the locking member engages with the plate feeding recess of the plate, the gripper of the transfer wheel is opened and closed by the second cam. The plate feeding recess and the second cam are positioned so as to pass the original to the gripper of the plate cylinder, and when the locking member engages with the plate discharge recess of the plate, the gripper of the transfer wheel The position of the plate discharging recess and the third cam is determined so that the plate is opened and closed by a third cam to remove the plate from the gripper of the plate cylinder, and the release member releases the engagement of the locking member. The plate feeding/discharging device 6 in a sheet-fed printing apparatus according to claim 2, characterized in that the plate feeding/discharging device 6 is located near the recess that was engaged with the locking member when the clutch mechanism is a transfer wheel. a wheel that is fixed to the shaft of the wheel and has one recess on its outer peripheral surface; and a wheel that is rotatably supported by the gear of the transfer wheel and has a protrusion on one end that can be engaged with the recess of the wheel on the other end. A hook having a claw portion on the side, a rotatable claw member having a claw portion at one end that can be engaged with the claw portion of the hook, and the hook member being rotated to engage and release the claw portion. Sheet-fed printing according to claim 2, characterized in that the sheet-fed printing comprises a solenoid that drives a pawl member to perform printing, and a release arm that is rotated by the operation of the solenoid and operates an opening/closing mechanism for the plate cylinder. Plate feeding/discharging device in the device. 7. The stopper means consists of a rotatable stopper that comes into contact with the tip of the original, and a solenoid that rotates this stopper via a plurality of links and shafts, and the feed roller means rotates the original at the original detection position. A driving-side roller having a fixed position that can clamp the tip, a driven-side roller that can swing, and a support member that supports the driven-side roller and has one end supported in a swingable manner; The cam is provided on the shaft of the stopper means equipped with a link rotated by the solenoid and is in contact with the free end of the support member, and when the stopper is retracted from the original stopping position, the rotation of the cam is prevented. Sheet-fed printing according to claim 2, characterized in that the supporting member is configured to swing so that the driven roller and the driving roller clamp the original by the movement of the driven roller. Plate feeding/discharging device in the device. 8 The plate discharge transfer mechanism includes a transfer wheel and a roller that transfers through the original gripped by the gripper, a guide member that guides the tip of the original that has passed between the roller and the transfer wheel, and a guide member that 3. A plate feeding/discharging device in a sheet-fed printing apparatus according to claim 2, comprising a pair of rollers for forcibly transporting the guided original to a plate discharging position. 9. A stopper means for stopping the sent original at the original detection position, a means for detecting that the original has been carried into the original detection position, a crossing wheel having a gripper for gripping the tip of the original, A plate cylinder that has a gripper for gripping and rotates the transfer wheel so as to rotate the gripper of the transfer wheel facing the gripper, and a plate cylinder that is operated by a plate feeding command to transfer the original from the original detection position to the gripper of the transfer wheel. a feed roller means for transporting the original; when the original is fed, when the gripper is delivered to the gripper of the plate cylinder; when the original is taken from the gripper of the plate cylinder; and when the original is discharged from the receiver. A transfer wheel opening/closing mechanism that opens and closes the gripper of the wheel, a plate cylinder opening/closing mechanism that opens and closes the gripper of the plate cylinder when receiving and taking an original from the transfer wheel and passing the original to the transfer wheel, and a plate cylinder opening/closing mechanism that operates according to a plate feeding command. The opening/closing mechanism of each gripper is actuated to rotate the transfer wheel and transfer the original gripped by the transfer wheel to the plate cylinder, and the opening/closing mechanism of each gripper is operated in response to the plate ejection command to rotate the transfer wheel and the original plate gripped by the agent. a clutch mechanism that operates the opening/closing mechanism of each gripper to release the original through the crossing wheel; a master discharge transfer mechanism that transports the original to the master discharge position after master discharge has been completed; the stopper means, the detection means, the crossing wheel, and the feed roller. a frame detachably attached to a main body frame of a sheet-fed printing apparatus, which supports the means, a transition wheel opening/closing mechanism, and a discharged plate transfer mechanism, and also supports a plate cylinder, a plate cylinder opening/closing mechanism, and a clutch mechanism; By separating the transfer wheel from the position adjacent to the plate cylinder, the phase of the axis of the transfer wheel and the gear phase with respect to the frame are locked, and the gripper of the plate cylinder and the gripper of the transfer wheel are brought into a phase in which the original plate holder can be transferred. The plate feeding/discharging device 0 to 10 in a sheet-fed printing apparatus is characterized by comprising a phase lock mechanism that enables gears on the plate cylinder and gears on the transition wheel to mesh with each other. The phase determining member supported by the frame, the shaft of the crossover wheel and the gear fitted to the shaft and capable of transmitting power to the shaft are maintained in a phase relationship with each other during printing. A locking means for locking to the phase determining member, a gear phase regulating means for regulating engagement between a gear of the transition wheel and a gear of the plate cylinder, and a locking means for locking the axis of the wheel and the gear over the phase determining member. Claim 9 is characterized in that the apparatus further comprises an erroneous attachment prevention means for preventing the plate feeding/discharging mechanism from being attached to the frame supporting the plate cylinder mechanism when the plate cylinder mechanism is not in use. Plate feeding/discharging device for sheet-fed printing equipment.