JPH0474268B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper threading preparation device for a web set in a paper feed section of a rotary printing press.

[Conventional technology and its problems]

Generally, when a roll of paper set in the paper feed section of a rotary press is passed through the paper threading path, it is impossible to thread the paper with the full width intact, so the tip is cut diagonally to make the tip thinner, and the tip is cut diagonally. I put reinforcing tape on it.

By the way, in the past, a piece of tape was attached to the tip of the paper roll to temporarily secure it, and then the paper was torn diagonally from a position several centimeters from the operating side while turning the paper roll by hand, and adhesive tape was applied to the narrow tip. It was very time-consuming because it had to be pasted on. In addition, it required a lot of effort and time to rotate the web, which weighs about 1000 kg, by hand.

Therefore, the present invention solves the above-mentioned inconveniences, and makes it possible to automatically and efficiently perform the work of cutting the leading end of the web paper diagonally and the preparation work of threading the paper to attach reinforcing adhesive tape to the leading end. The purpose of the present invention is to provide a paper threading preparation device.

[Means for solving problems]

In order to achieve the above object, the present invention provides a swing arm in a paper feed section of a rotary printing press, one end of which is swingably supported above the outer periphery of a web set in the paper feed section. The swing arm is provided opposite to the end thereof, and has an endless drive belt that contacts and rotates the web, a tape reel that supports a roll of adhesive tape, and the tape that is supported by the tape reel that is fed out onto the drive belt. A tape feeding device and a cutter device for cutting the tape into a predetermined length are provided, and the drive belt is provided with a holder capable of supporting the tip of the adhesive tape fed out onto the belt, and the tape is supported by the holder. A paper conveying device is disposed that guides the leading end of the paper web, which is fed out around the belt guiding tail pulley together with the drive belt, toward the nip roller provided on the swing arm, and a paper cutter is placed on the inlet side of the nip roller to guide the leading edge of the web paper, which is fed out around the belt guiding tail pulley. The structure is such that it can be moved in the width direction.

[Effect]

The paper threading preparation device with the above configuration rotates the web set in the paper feed section by contact with the drive belt, and supports the tip of the adhesive tape fed onto the drive belt with a holder, and the drive belt It is then moved along with the tape and attached to the outer circumferential surface of the paper roll.

Also, by pasting the adhesive tape, the leading edge of the paper web that moves with the drive belt is sent through the paper conveying device toward the nip roller, and when the leading edge is conveyed forward by the rotation of the nipping roller, the paper cutter is The leading end of the web is moved from one side to the other to cut the leading end of the web diagonally.

〔Example〕

Embodiments of the present invention will be described below based on the attached drawings.

As shown in FIG. 1, a support shaft 3 is installed on a web A that is supported by a three-pronged arm 2 of a paper feed section 1 of a rotary press, and the rear end is supported by the support shaft 3. As shown in FIG. 3, one of the two swing arms 4, 4 is
The other swing arm 4 faces the axial end of the web A, and the other swing arm 4 faces the center of the web A in the width direction.

Further, the rear end of an arm 5 is fixed to the shaft end of the support shaft 3, as shown in FIG. There is.

Therefore, by operating the cylinder 6, the swing arm 4 swings about the support shaft 3 toward the outer diameter surface of the web A.

Generally, a newspaper rotary press is provided with a swingable paster arm in its paper feeding section, so the swing arm may be attached to a shaft that supports the paster arm.

The swing arm 4 includes a head pulley 8, a tension pulley 9, and a tail pulley 10 from the tip.
is attached, and the tail pulley 10 is arranged coaxially with the support shaft 3. These three pulleys 8,
Endless drive belt 1 that spanned for 9 or 10 minutes
1 is moved in the direction of the arrow in FIG. 2 by rotating the head pulley 8 by driving a motor (not shown).

Further, as shown in FIG. 2, a support plate 12 is attached to the tip of the swing arm 4, and a tape reel 13 that rotatably supports the rolled adhesive tape B is attached to the support plate 12, and this tape reel 1
a pair of feed rolls 1 that feed the tip of the adhesive tape B supported by the tape B onto the drive belt 11;
4 and 15 are supported, and a pair of feeding rolls 1
Of the rolls 4 and 15, the feed roll 15 provided below is rotationally driven by a motor (not shown) attached to the back side of the support plate 12.

At the front of the adhesive tape B in the feeding direction, which is fed out by the pair of feeding rolls 14 and 15,
A roller arm 16 is arranged, one end of which is swingably supported by a support plate 12, and a presser roll 17 is attached to the other end. This roller arm 16 is swung by the operation of the cylinder 8 supported by the swing arm 4, and when swung downward, the pair of feed rolls 1
A presser roll 17 presses the tip of the adhesive tape B fed onto the drive belt 11 from the tapes 4 and 15 onto the drive belt 11.

Note that the adhesive tape B is fed out so that its adhesive surface faces the outer periphery of the presser roll 17. For this reason, the presser roll 17 is provided with releasability to prevent the adhesive tape B from adhering to the outer periphery.

A cutter device 20 for cutting the adhesive tape B between the pair of feed rolls 14 and 15 and the presser roll 17 is provided.

Here, the cutter device 20 moves the knife 22 by a cylinder 21, and the cylinder 21 is a pulse generator (not shown) that counts the number of rotations of the lower feed roll 15.
When the pulse generator detects that the number of revolutions of the lower feed roll 15 has reached a predetermined number, the cylinder 21 is activated to release the knife 2.
2, the adhesive tape B is cut.

A holder 2 is provided on a part of the surface of the drive belt 11 to support the tip of the adhesive tape B fed out onto the drive belt 11 and move it together with the drive belt 11.
3 is installed. Here, the holder 23 consists of a pin, and the pin is the adhesive tape B pressed onto the drive belt 11 by the presser roll 17.
The adhesive tape B is held by the piercing.

On the transfer path of the holder 23, there is a
A sensor 24 is provided to detect the holder 23, and when the sensor 24 detects the holder 23, the motor for driving the drive belt 11 is stopped.

By moving the drive belt 11, the tail pulley 1
The leading edge of the web A that is conveyed to around 0 is
Next, the pair of nip rollers 50, 5 disposed on the swing arm 4 are moved by the paper conveying device 30.
0'.

The paper conveying device 30 in this embodiment consists of a combination of a vertical feed conveyor device 31 and a horizontal feed conveyor device 41. The vertical feed conveyor device 31 includes a first belt conveyor 35 and a second belt conveyor 36, each of which has a belt 34 stretched between an upper pulley 32 and a lower pulley 33 in double rows, and which are arranged opposite to each other.
A lower pulley 33 of the first belt conveyor 35 is movably supported by the support shaft 3. Further, the upper pulleys 32 of the conveyors 35 and 36 are rotated in opposite directions by motors (not shown), and the leading end of the web A is held between the opposing belts 34 and 34 and conveyed upward. .

Note that when the holder 23 that pierces the adhesive tape B rotates around the tail pulley 10, there is a risk that the leading end of the paper roll A will rotate together, so a guide plate 37 is provided at the upper part of the outer circumference of the tail pulley 10. It is preferable to release the piercing of the holder 23 and the adhesive tape B by the tip of the adhesive tape B.

Upper pulley 32 of the first belt conveyor 35
A paper guide plate 38 is disposed above, and a notch (not shown) is formed in the leading edge of the paper guide plate 38 at a position facing the belt 34 of the second belt conveyor 36. The belt 34 of the second belt conveyor 36 is inserted through. Therefore, the direction of the leading end of the web A, which is conveyed upward by the pair of belts 34, 34, is changed by 90° by the paper guide plate 38.
It is fed into the horizontal feed conveyor device 41 arranged above and to the side of the first belt conveyor 35.

As shown in FIG. 4, the horizontal conveyor device 41 includes a suction box 42 and a belt roller 4.
A perforated belt 44 is passed in double rows between 3 and 3,
Each belt 4 is provided on the upper surface of the suction box 42.
A suction hole 45 is provided at a position opposite to the belt 44, and the suction force acting from the suction hole 45 to the hole 46 of the belt 44 attracts the leading end of the web A, and the belt 44 is rotated by the rotation of the belt roller 43. The movement causes the leading end of the web A to be fed horizontally.

Of the pair of nip rollers 50 and 50' provided on the unloading side of the horizontal feed device 41, the lower nip roller 50 is driven to rotate in one direction, and the upper nip roller 50' is moved up and down by the cylinder 51. .

A long rail 60 in the width direction of the web A is laid above the horizontal feed device 41, and the rail 60 is
A cutter holder 6 provided movably along the
1 is threadedly engaged with a threaded rod 62 arranged parallel to the rail 60, and the cutter holder 61 is moved by rotation of the threaded rod 62. This cutter holder 6
A circular paper cutter 63 is rotatably supported at 1.

In the preparation device configured as described above, when the swing arm 4 is swung toward the web A by the operation of the swing cylinder 6 of the swing arm 4, the drive belt 11
comes into contact with the outer diameter surface of the web A.

Further, when the adhesive tape B supported by the tape reel 13 is fed to a certain length by the rotation of the feed rolls 14 and 15, the cylinder 18 shown in FIG. 2 is activated and the roller arm 16 is swung. The presser roll 17 holds the tip of the adhesive tape B against the drive belt 11.
When pressed, the drive belt 11 is moved.

By moving the drive belt 11, the holder 2
3 pierces the tip of the adhesive tape B, and the adhesive tape B moves together with the drive belt 11. When the adhesive tape B is fed out for a certain length, the cutter device 20 is activated to cut the adhesive tape B.

On the other hand, the web A is rotated in the direction of the arrow in FIG. 11 due to contact with the drive belt 11, and the adhesive tape B, which moves together with the drive belt 11, is attached to the outer diameter surface of the web A.

By pasting the adhesive tape B, the leading end of the paper roll A is rewound and moves in the same direction as the drive belt 11.

Here, if there is a misalignment between the tip of the adhesive tape B attached to the outer diameter surface of the paper roll A and the tip of the paper roll A, when the leading edge of the paper roll A is fed out, the leading edge of the paper roll A will be As shown, the adhesive tape B is bent from the tip to become double and moves toward the tail pulley 10.

In addition, in order to ensure that the folded piece at the leading end of the paper roll A is overlapped with the portion unwound from the paper roll A, air may be blown onto the folded piece.

When the leading end portion unwound from the paper roll A is conveyed to the position of the tail pulley 10, the holder 23
moves around its tail pulley 10, while the leading end of the web A moves around the first belt conveyor 35.
Since the holder 23 is held between the belts 34, 34 of the second belt conveyor 36, the web A
On the other hand, the leading end of the paper roll A is held between a pair of belts 34 and 34 and conveyed upward. When the leading end moves to the position of the paper guide plate 38, the direction is changed by 90° and moves horizontally, and then it is attracted to the surface of the belt 44 of the horizontal conveyor device 41, and is conveyed horizontally together with the belt 44. It is sent between nip rollers 50 and 50'.

At this time, since the nip rollers 50 and 50' are in contact with each other and one of the nip rollers 50 is being rotated, the tip of the web A is
It is transported forward by a rotation of 0'. During the conveyance, the paper cutter 63 is moved from one side of the web A to the other side.

Therefore, the leading end of the web A is cut diagonally as shown in FIG. It is separated and sent to a waste container 70 arranged in front of the nip rollers 50, 50'.

When the leading edge of the web A is conveyed to a predetermined position by the rotation of the nip rollers 50, 50', the nip rollers 50, 50' and the drive belt 11 stop and wait until the clip of an automatic paper threading device (not shown) comes. do.

When the clip of the automatic paper threading device grasps the leading end of the paper, the drive belt 11 moves and at the same time the nip rollers 50, 50' rotate to feed out the web A.

When a signal indicating the completion of paper threading is issued, the nip roller 50' is released and the swing arm 4 is deflected upward by the operation of the cylinder 6. Further, the drive belt 11 stops at the position where the sensor 24 detects the holder 23.

In the case of the embodiment, two rows of adhesive tape B are attached to the leading end of the paper roll A, but the adhesive tape may be attached only to the side edges of the paper roll A.

〔effect〕

As described above, according to the present invention, it is possible to automatically and efficiently perform the work of diagonally cutting the leading end of a roll of paper and the preparation work of threading the paper to attach a reinforcing adhesive tape to the leading end. This can have a significant effect on labor savings.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of the paper threading preparation device according to the present invention, Fig. 2 is an enlarged view of the adhesive tape feeding portion of the same, Fig. 3 is a perspective view of the same, and Fig. 4 is a horizontal feed conveyor device of the same. It is a perspective view showing a part of. 1...Paper feed section, 4...Swing arm, 11...
...Drive belt, 13...Tape reel, 14,1
5... Feeding roll, 20... Cutting device, 2
3... Holder, 30... Paper conveyance device, 50,
50'...Nitsupurora, 63...Paper cutter.

Claims (1)

[Claims] 1. A swing arm, one end of which is swingably supported above the outer periphery of the web set in the paper feed unit, is provided in the paper feed unit of a rotary printing press, facing the shaft end of the web, and the swing arm is provided with a , an endless drive belt that contacts and rotates the web; a tape reel that supports the rolled adhesive tape; a tape feeding device that feeds out the tape supported by the tape reel onto the drive belt; and a tape feeding device that feeds the tape to a predetermined length. A cutter device for cutting is provided, and a holder is attached to the drive belt that can support the tip of the adhesive tape fed out onto the belt. A paper conveying device is arranged to guide the leading end of the unwound paper toward a nip roller provided on the swing arm, and a paper cutter is provided on the input side of the nip roller so as to be movable in the width direction of the paper roll. Threading preparation device.