JPH0688690B2 - Printing machine side lathe - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sidelay device for aligning the side edges of a new paper roll and an old paper roll during splicing of a printing machine to perform splicing correctly.

[Prior art and its problems]

In the printing machine, when the remaining amount of the old paper roll held on the turret arm becomes small, the new paper roll and the old paper roll held at the other end of the turret arm are spliced together to continuously transfer the print paper into the printing machine. I am trying to supply it. At this time, conventionally, the operator operates the chucking device holding the new web while visually confirming that the side edges of the old and new web are aligned.

In this way, if the side edges of both paper rolls are manually aligned, efficiency is poor and time is required.

[Object of the Invention]

SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to provide a sidelay device of a printing machine that can accurately and automatically perform side edges of both webs at the time of splicing paper in a short time.

[Structure of Invention]

For this purpose, there is provided a first detection device which is held at one end of a rotatable turret arm and detects a side end position of an old paper roll that is supplying a printing paper to a printing machine, and the turret arm which is spliced to the old paper roll. Detection device for detecting the side edge of the new paper roll held at the other end of the core, a chucking device for holding the core paper roll and moving the new paper roll in its axial direction, and the first and second detection devices. This is accomplished by a sideley device comprising a controller that controls the operation of the chucking device based on a signal from the device.

Example of Invention

In FIG. 1, the turret arm 22 has a new paper roll P
The old web P ₀ that is running is rotatably supported, and the old web P ₀ is guided by the guide roller 23 projectingly installed at the center of the turret arm while the printing paper is loaded into the printing machine through the accumulator 41. We are supplying. The new paper roll P
A paper splicing device 26 that is swingably attached to the frame 1 is provided on the side of the sheet splicing device, and the sidelay device 24 according to the present invention is attached to the paper splicing device 26.

Further, on the upper part of the frame 1, there is provided a gluing device 25 for sticking a double-sided tape for splicing the paper to the front end of the web of the new paper roll P. As shown in FIG. 2, the paper splicing device 26 has swinging arms 27, 27 which are swingably provided at intervals on the left and right sides.
A roller 29a for guiding the web is rotatably attached to the shaft 1 by means of the frame 1.

Between the swing arms 27, there are provided a brush 28 for pressing the web of the old web P ₀ onto the new web P at the time of paper splicing, and a cutter 29 for cutting the old web P ₀ after the paper splicing.

The sidelay device 24 has a casing 24a as shown in FIGS. 2 and 3, and a sensor holder 70 is supported along the side surface of the casing 24a. The sensor holder 70 is attached to the tip of a rack member 71. The rack member 71 meshes with the pinion 73 attached to the motor 72, and the sensor holder 70 moves left and right by the rotation of the motor 72 provided in the casing 24a. A bar member 75 is provided below the rack member 71, and two limit switches 76 and 77 are fixed on the bar member 75. The limit switch 76 on the left side of the figure is the sensor holder 70.
Is stopped at its left limit point, and the limit switch 77 on the right side in the figure is for stopping the sensor holder 70 at the origin. These limit switches 76 and 77 cooperate with a limit switch operating piece 78 mounted on the lower surface of the rack member 71.

A transmission sensor 79, 80 (first detection device) for detecting the traveling old paper (web) is attached to the upper part of the sensor holder 70 (position corresponding to the old paper), and the optical sensor 79, 80 An air compressor 81 is provided on the rear side of the sensor holder 70 in order to remove dust (paper dust) from the lens 80. Limit switches 82 and 83 (second detection device) that come into contact with the end face of the new paper roll (roll) are provided at the lower portion of the detection frame 70 (position corresponding to the new paper roll), and the limit switch 82 is for detection and the limit switch 83.
Operates as a safety measure. The sensors 79, 80 and the limit switches 82, 83 take positions corresponding to old paper and new paper when the paper joining device 26 is moved from the standby position to the paper joining position.

The sidelay device 24 operates so as to stop the motor 72 via the control circuit 84 when old paper (wave) enters between the transmission sensors 79 and 80 for detection and the phototube detects the end surface of the old paper, In this state, the new paper roll P supported by the turret arm 22 is moved to the right side of the drawing by the chucking devices 53 and 54 shown in FIG. 5, and when its end face comes into contact with the limit switch 82, it passes through the control circuit 84. Stop the chucking devices 53, 54. The new paper roll P is supported between the turret arms, but before the sidelay work, it is placed on the left side of the drawing so that the detecting transmissive sensors 79 and 80 always detect the end face of the old paper and then the new paper roll P. Contact the limit switch 82 (4th
Figure).

The rotary shaft 21 rotatably supported by the frame 20 has a fifth
As shown in the figure, it has a gear 50 at one end,
Meshes with a drive gear 51, and this drive gear 51 is driven by a motor 52, and this mechanism (turret arm rotating device)
This causes the turret arm 22 to rotate. A chucking device 5 for holding the paper P is attached to the tip of the arm 20.
3,54 are installed. The chucking device 53,
A motor 56, a gear 57 of the motor 56, a gear 58 meshing with the gear 57, and a gear 59 meshing with the gear 57,
The gear 59 is attached to the rear end of the cone shaft 60, and the gear 59 is connected to the powder brake 61 attached to the arm 22 via the gear 100, and the brake 61 stops the rotation of the cone shaft 60. The cone shaft 60 is rotatably held in a moving sleeve 62 that moves in the left-right direction, a rack 62a is formed around the moving sleeve 62, and a pinion 63 meshes with the rack 62a. 55 gears 164 mesh, and these parts form part of the Sideley device.

The other chucking device 54 is an air cylinder.
64 and a pinion 65 connected to this hydraulic cylinder 64
And a moving member 66 having a rack portion 66a meshing with the pinion 65, and a cone shaft 67 rotatably held in the member 66.

[Action]

 Next, the operation will be described.

The turret arm 22 is appropriately rotated to bring it to the paper splicing position as shown in FIG. At this time, the paper splicing device 26 also swings from the standby position to the operating position indicated by the solid line. The sideley operation is performed in this state.
That is, when the swing frame 27 has reached the operating position is detected by a limit (not shown), the motor 72 is rotated and the sensor holder 70 is moved to the left side in FIG. 3 (steps S1 and 2 in FIG. 6). At this time, when the old paper roll P ₀ is inserted between the sensors 79, 80 and the sensors 79, 80 detect the side edge thereof, the control circuit 84 stops the motor 72 (step S3). Next, the chucking motor 55 (Fig. 5) is driven to move the new web P to the right in Fig. 3 (step S4), and the end face of the new web P contacts the limit switch 82 as shown in Fig. 4. When the contact is made, the chucking motor 55 is stopped (step S5). At this time, the old and new paper rolls P ₀ , P are aligned with each other in the axial direction. Next, move the sensor holder 70 to the right side in the figure,
That is, the sideley process of moving to the standby position is completed (step S7).

Normally, the current sidelay process is performed. However, in step S3, when the new web P is detected before the old web P ₀ (step S2a), the chucking devices 53, 54 (fifth). The new paper P is moved to the left by the sideley motor 55 and cylinder 64 shown in the figure so that the side edge of the old paper P ₀ is always detected first (step S2).
b). At this time, the motor 55
Is rotated in the reverse direction to move the winding to the left, and since the cylinder 64 always works in the direction of pushing the winding paper to the left, the cone shaft 67 follows and moves. After this, paper splicing is performed.

〔The invention's effect〕

Since the present invention is configured as described above, there is an effect that the side edges of the old and new paper rolls can be accurately and automatically aligned at the time of paper splicing, and accurate paper splicing is possible.

[Brief description of drawings]

FIG. 1 is a side view of a paper feed section of a printing machine to which the sidelay device of the present invention is applied, FIG. 2 is a perspective view of a paper splicing device, FIG. 3 is a schematic diagram of the sidelay device, and FIG. Illustration,
FIG. 5 is a block diagram of the chucking device, and FIG. 6 is a flow chart of the sideley operation. 1 ... frame, 24 ... sideley device, 26 ... paper splicing device, 70 ... sensor holder, 79,80 ... first detection device, 82,83 ... second detection device.

Claims (1)

[Claims] 1. A first detection device, which is held at one end of a rotatable turret arm, for detecting a side edge position of an old paper roll that supplies printing paper to a printing machine; and the turret that is spliced to the old paper roll. A second detection device that detects the side edge of the new web that is held at the other end of the arm, a chucking device that holds the new web and moves the new web in the axial direction, and the first and second A sidelay device for a printing press, comprising a control device for controlling the operation of the chucking device based on a signal from a detection device.