JPH05330639A - Print cylinder conveyor device for gravure printing machine - Google Patents

Abstract

PURPOSE:To reduce time required for print cylinder replacing work by providing a means capable of conveying print cylinders to each printing unit of a gravure printing machine by a conveyor. CONSTITUTION:A turntable device 10, provided with two conveyors for holding a print cylinder to be supplied to a printing unit 2 and a print cylinder conveyed out from the printing unit 2, is disposed in relation to each printing unit 2 of a gravure printing machine 1. A conveyor 13 is further provided to convey the print cylinders between a stock yard 12 for stocking print cylinders for replacement and the turntable device 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate cylinder conveying device for conveying a plate cylinder to each printing unit of a gravure printing machine.

[0002]

2. Description of the Related Art As a means for exchanging a plate cylinder in each printing unit of a gravure printing machine, the Japanese Utility Model Publication No. 3-153
A plate cylinder changing device of No. 05 is known. In order to supply the plate cylinder to the plate cylinder exchanging device as described above, an operator generally pushes the carriage to convey the plate cylinder to each printing unit of the gravure printing machine.

[0003]

However, some plate cylinders have a long width of about 700 to 1000 mm, and since they are made of iron, the plate cylinder is considerably heavy. Moreover, since the gravure printing machine changes the plate cylinder depending on the design, the plate cylinder may be replaced about 10 times a day at a time, and the work of pushing and carrying it by a trolley is a heavy labor.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a means for conveying a plate cylinder by a conveyor to each printing unit of a gravure printing machine, thereby reducing the time and labor required for replacing the plate cylinder. It is in. To achieve such an object, a turntable device having two conveyors for holding a plate cylinder for supplying to the printing unit and a plate cylinder carried out from the printing unit is arranged for each printing unit of the gravure printing machine. In addition, the plate cylinder transporting device of the gravure printing machine was configured by providing a transporting conveyor for transporting the plate cylinder between the stockyard where the replacement plate cylinder is stocked and the turntable device.

[0005]

[Operation] A new plate cylinder stocked in the stockyard is conveyed by a conveyer, and is carried into one of the conveyers of the turntable device arranged in each of the printing units of the gravure printing machine and removed from each of the printing units. The old plate cylinders are carried into the other conveyor of the turntable device. Then, the transport path is switched by the rotation of the turntable device, and new plate cylinders held on one of the conveyors are carried into the respective printing units and mounted, and the plate cylinders are replaced. The old plate cylinder that has been replaced is transported to the stockyard by the transport conveyor and is appropriately unloaded.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 is a gravure printing machine provided with a large number of printing units 2. Each printing unit 2 includes a plate cylinder, an impression cylinder,
It is equipped with a dryer, and the paper or film 4 fed from the roll 3 is overprinted in each printing unit 2 one color at a time, and the paper or film 4 on which various colors are combined and printed is finally rolled. Winded up to 5. The present invention relates to a plate cylinder transporting device for transporting a plate cylinder to each printing unit 2 of the gravure printing machine 1 as described above.

As shown in the drawing, a turntable device 10 is arranged for each printing unit 2 of the gravure printing machine 1. Between each of these turntable devices 10 and each of the printing units 2, there is provided a carrying device 11 for moving the plate cylinder to and from the plate cylinder changing device provided in the printing unit 2. Reference numeral 12 is a stockyard in which replacement plate cylinders are stocked. A transfer conveyor 13 for transferring the plate cylinder is provided between the stockyard 12 and the turntable device 10. The transport conveyor 13 includes a long conveyor arranged between the stockyard 12 and the turntable device 10 and each turntable device 10.
There is a short conveyor placed between each other. FIG. 2 is a perspective view of the plate cylinder 14 conveyed by the plate cylinder conveying device of the present invention. The plate cylinder 14 is conveyed while being placed on the pallet 15 as illustrated.

First, the stockyard 12 in which replacement plate cylinders are stocked will be described. FIG. 3 is a front view of the stockyard 12, and FIG. 4 is a plan view. 20 is a chain conveyor wound around a drive sprocket 21 and a driven sprocket 22. The drive sprocket 21 is rotated by the operation of the motor 23, and the chain conveyor 20
Circulates. Pallets 1 arranged on the upper surface of the chain conveyor 20 so as to be orthogonal to the traveling direction of the conveyor.
The plate cylinder 14 is placed on the plate 5, and the chain conveyor 20 is rotated by the operation of the motor 23 to move the plate cylinder 14 on the conveyor. As will be described later, the plate cylinder 1 is attached to the stockyard 12 by a hoist crane.
4 is supplied, and the chain conveyor 2
Guides 24 for restricting the supply position of the plate cylinder 14 are provided on both sides of 0. Chain conveyor 2 as above
At one end side of 0 (the side close to the driven sprocket 22), a loading / unloading device 30 for loading / unloading the plate cylinder 14 to / from the stockyard 12 is arranged.

FIG. 5 is a front view of the loading / unloading device 30,
Reference numeral 31 denotes an elevating frame which is attached above the support frame 32 via a guide 33 so as to be able to ascend and descend. The piston rod 35 of the cylinder 34 fixed to the support frame 32 is connected to the lower surface of the elevating frame 31, and the elevating frame 31 moves up and down as the cylinder 34 expands and contracts. On the upper surface of the elevating frame 31, the roller conveyor 3 including a large number of rollers 36
7 is provided. Each roller 36 is a lifting frame 31
It is rotated by the operation of the motor 38 fixed inside. The conveying direction by the rotation of each roller 36 is orthogonal to the conveying direction by the chain conveyor 20 described above with reference to FIGS. 3 and 4. Then, as described above, when the plate cylinder 14 supplied to the pallet 15 on the chain conveyor 20 in the stockyard 12 is conveyed to the position of the loading / unloading device 30, the elevating frame 31 is raised by the extension operation of the cylinder 34. , The plate cylinder 14 on the chain conveyor 20 together with the pallet 15 on the roller conveyor 37
I am supposed to receive it. After being received by the roller conveyor 37 in this manner, the plate cylinder 14 is conveyed rightward in FIG. 5 together with the pallet 15 by the operation of the motor 38, and is supplied to the next conveyor 13.

FIG. 6 is a plan view of the conveyor 13.
FIG. 7 is a front view. Above the frame 40 are a number of rollers 41. These rollers 41 are rotated by the operation of a motor 42 provided inside the frame 40. Guide plates 43 for guiding the pallet 15 to maintain the transporting posture of the plate cylinder 14 are provided on both sides of the roller 41. The above conveyors 13 include a conveyor having a short length as shown in FIG. 6 and a conveyor having a long length as shown in FIG. 8, all of which are roller conveyors capable of conveying the plate cylinder 14. ..

Next, the turntable device 10 will be described. FIG. 9 is a plan view of the turntable device 10, and FIG. 10 is a front view. A turntable 50 is attached to a rotary shaft 51 arranged below the device. Motor 5
2 rotations through the reduction gear 53 and the chain 54 to the rotation shaft 5
1 to rotate the turntable 50. Reference numeral 55 is a roller for supporting the lower surface of the turntable 50, and a proximity switch 56 for detecting the rotation stop position of the turntable 50 is arranged immediately next to the roller 55. Turntable 5 as above
0 on the upper surface of 2
Two conveyors 59 and 60 are provided in parallel. Each roller 58 of these conveyors 59 and 60 is a turntable 5.
The motors 61 fixed to the upper surface of 0 are rotated respectively. 62 is a conveyor 59,
It is a stopper that stops the movement of the plate cylinder 14 that has been loaded into the plate 60. The stopper 62 moves up and down by the operation of the cylinder 63.

Next, the carrying device 11 will be described. FIG. 11 is a front view of the carrying device 11, and FIG. 12 is a plan view. Reference numeral 70 denotes a carrying cart, which is adapted to travel with tires 72 along rails 71 laid on the floor surface. The piston rod 74 of the cylinder 73 fixed to the floor is attached to the carrying carriage 70, and the expanding and contracting operation of the cylinder 73 causes the carrying carriage 70 to move to the position shown by the solid line 70a in FIG. 11 and the dashed line 70b in FIG. It is configured to reciprocate to the position shown. When the cylinder 73 is shortened, the solid line 7
At the position 0a, the carrying carriage 70 retracts to the vicinity of the turntable device 10, and conversely, the cylinder 7
When the carriage 3 is extended, the carrying carriage 70 is located at the position of the alternate long and short dash line 70b, and the carrying carriage 70 is located in the printing unit 2 of the gravure printing machine 1.
It is designed to advance to the position just beside. Above the carrying carriage 70 as described above, a large number of rollers 7 are provided.
A roller conveyor 76 constituted by 5 is provided. Each roller 75 of the conveyor 76 is adapted to rotate by the operation of the motor 77. Further, as shown in FIG. 12, a proximity switch 78 for detecting that the plate cylinder 14 has moved to a predetermined position by a roller conveyor 76 on the upper surface of the carrying carriage 70, and a pallet 15 are provided.
A pin 79 is provided which is fitted into a hole (not shown) provided on the lower surface of the plate to suppress the movement of the plate cylinder 14. Pin 79
Is projected by a cylinder 80.
Besides, pallets 15 are provided on both sides of the roller conveyor 76.
A guide plate 81 is provided to guide the sheet and maintain the posture of the plate cylinder 14. Reference numeral 82 in the drawing denotes a driving shaft of the printing machine. As shown in the drawing, the turntable device 10 is arranged outside the driving shaft 82, and the carrying device 11 is arranged more than the driving shaft 82. By arranging the plate cylinder 14 inside, the plate cylinder 14 can be exchanged on both sides of the drive shaft 82 without interfering with the shaft.

In the transporting device constructed as described above, first, a new plate cylinder 14 suspended by a hoist crane 85 is supplied to the stockyard 12 as shown in FIG. As many pallets 15 as the plate cylinders 14 are placed in the stockyard 12 in advance, and the plate cylinders 14 are supplied while being aligned on the pallets 15 while being regulated by the guides 24 described with reference to FIGS. .. When the new plate cylinder 14 thus supplied to the stockyard 12 is conveyed to the position of the loading / unloading device 30 at the end of the conveyor due to the circumferential movement of the chain conveyor 20, the cylinder 34 described in FIG. 31 moves up, and the plate cylinder 14 on the chain conveyor 20 is moved to the pallet 15
At the same time, it is received by the roller conveyor 37 of the loading / unloading device 30. Then, the motor 38 operates to convey the plate cylinder 14 together with the pallet 15 by the roller conveyor 37 and deliver it to the next conveyor 13. The new plate cylinder 14 thus delivered is sequentially conveyed by the conveyor 13 as shown in FIG.

Next, when the plate cylinder 14 is conveyed to a predetermined position of the conveyor 59 of the turntable device 10, as shown in FIG.
The stopper 62 described with reference to FIG. 10 rises to stop the movement of the plate cylinder 14. Thus, as shown in FIG. 15, the new plate cylinder 14 is installed on the conveyor 59 of the turntable device 10.
It will be in a stopped state on top. The steps until the new plate cylinder 14 is supplied to each turntable device 10 as described above can be performed in advance while the gravure printing machine is in operation. When the new plate cylinder 14 is supplied to the turntable device 10 in this manner, the turntable 50 starts to rotate as shown in FIG. 16 by the operation of the motor 52 described in FIG. In this way, the turntable 50 rotates 270 ° in the counterclockwise direction, and the rotation stops when the conveyor 60 of the turntable device 10 and the roller conveyor 76 of the carrying carriage 70 are aligned. Also,
In the printing unit 2, the ink pan and the automatic ink circulation device are automatically discharged. Then, as described above, while the turntable 50 is rotating, the carrying carriage 70 advances to the position of the printing unit 2 of the gravure printing machine 1 by the extension operation of the cylinder 73 described in FIG. The state becomes as shown in. The pallet 15 is placed on the carrying carriage 70 in advance. Then, by the arm 86 of the plate cylinder changing device provided in the printing unit 2, the old plate cylinder 14 'that has been used until now.
Is taken out. Then, as shown in FIG. 17, the removed old plate cylinder 14 ′ is transferred onto the pallet 15 placed on the roller conveyor 76 of the carrying carriage 70.

In this way, when the old plate cylinder 14 'is received by the carrying carriage 70, the cylinder 73 described in FIG. 11 is shortened again, and the carrying carriage 7 as shown in FIG.
0 moves backward near the turntable device 10. Then, the roller conveyor 76 of the carrying carriage 70 and the conveyor 60 of the turntable device 10 are simultaneously operated to move the old plate cylinder 14 ′ to the conveyor 60 of the turntable device 10.
Draw in. When pulling in the old plate cylinder 14 'in this way, the stopper 62 described in FIGS. 9 and 10 is raised beforehand. Thus, as shown in FIG. 19, both the new plate cylinder 14 and the old plate cylinder 14 ′ are provided with two conveyors 59, 60 provided on the turntable device 10.
Will be held on top of.

Next, the turntable 50 is rotated 180 ° in the clockwise direction, and as shown in FIG.
The rotation is stopped at a position where the conveyor 59 holding the and the roller conveyor 76 of the carrying carriage 70 are aligned. Next, the conveyor 5 of the turntable device 10
9 and the roller conveyor 76 of the carrying carriage 70 are simultaneously operated, and as shown in FIG.
Moves onto the roller conveyor 76 of the carrying carriage 70. Thus, the new plate cylinder 14 is installed on the roller conveyor 7
Proximity switch 7 to move to a predetermined position on 6
8, the pin 79 described in FIG. 12 projects and fits into the hole on the lower surface of the pallet 15, and the movement of the plate cylinder 14 is suppressed.

When the new plate cylinder 14 is held on the roller conveyor 76 in this way, the cylinder 73 described in FIG. 11 is extended and the carrying carriage 70 re-advances to the position of the printing unit 2 of the gravure printing machine 1. And
As shown in FIG. 22, the arm 86 of the plate cylinder changing device provided in the printing unit 2 swings to pick up the new plate cylinder 14 from the carrying carriage 70 and mount it on the printing unit 2. Then, the ink pan and the automatic ink circulation device are returned to the printing unit 2. Thus, the work of exchanging the plate cylinder is completed, and the printing machine starts the next printing process.

On the other hand, the turntable 50 on which the used old plate cylinder 14 'is mounted has the motor 52 described with reference to FIG.
23, it rotates 90 ° in the counterclockwise direction and stops rotating at a position where the conveyor 60 and the transfer conveyor 13 of the turntable device 10 are aligned with each other as shown in FIG. Then, the conveyor 60 and the transfer conveyor 13 of the turntable device 10 rotate at the same time, and the used old plate cylinder 14 'is thus transferred to the transfer conveyor 13 as shown in FIG.
It is conveyed in the direction to be returned to the stockyard 12. Thus, the old plate cylinder 14 sequentially returned to the stockyard 12 via the loading / unloading device 30 is suspended by the hoist crane 85 and is appropriately unloaded.

[0019]

According to the present invention, the plate cylinder can be conveyed to each printing unit of the gravure printing machine by a conveyor, and therefore, in comparison with the case where a person pushes and carries a plate cylinder in the related art,
It is possible to significantly reduce the time and labor required for exchanging the plate cylinder. Further, since the work of exchanging the plate cylinder can be completed in a relatively short time, there is an advantage that productivity can be improved.

[Brief description of drawings]

FIG. 1 is a plan view of a gravure printing machine including a plate cylinder transport device of the present invention.

FIG. 2 is a perspective view of a plate cylinder

[Figure 3] Front view of the stockyard

[Figure 4] Plan view of the stockyard

FIG. 5 is a front view of the loading / unloading device.

FIG. 6 is a plan view of the transfer conveyor.

FIG. 7 is a front view of the transfer conveyor.

FIG. 8 is a plan view of a long conveyor.

FIG. 9 is a plan view of a turntable device.

FIG. 10 is a front view of a turntable device.

FIG. 11 is a front view of a carrying device.

FIG. 12 is a plan view of a carrying device.

FIG. 13 is an operation explanatory diagram of the plate cylinder transport device.

FIG. 14 is an operation explanatory diagram of the plate cylinder transport device.

FIG. 15 is an operation explanatory diagram of the plate cylinder transport device.

FIG. 16 is an operation explanatory diagram of the plate cylinder transport device.

FIG. 17 is an operation explanatory view of the plate cylinder transport device.

FIG. 18 is an operation explanatory diagram of the plate cylinder transport device.

FIG. 19 is an operation explanatory view of the plate cylinder transport device.

FIG. 20 is an operation explanatory diagram of the plate cylinder transport device.

FIG. 21 is an operation explanatory view of the plate cylinder transport device.

FIG. 22 is an operation explanatory view of the plate cylinder transport device.

FIG. 23 is an operation explanatory view of the plate cylinder transport device.

FIG. 24 is an operation explanatory view of the plate cylinder transport device.

FIG. 25 is an operation explanatory diagram of the plate cylinder transport device.

[Explanation of symbols]

 1 Gravure printing machine 2 Printing unit 10 Turntable device 12 Stockyard 13 Conveyor 14 Plate cylinder

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65G 47/80 A 8010-3F

Claims (1)

[Claims] 1. A turntable device having two conveyors for holding a plate cylinder for supplying to the printing unit and a plate cylinder carried out from the printing unit is arranged for each printing unit of the gravure printing machine. A plate cylinder transfer device for a gravure printing machine, which is also provided with a transfer conveyor that transfers the plate cylinder between the stockyard where the replacement plate cylinder is stocked and the turntable device.