JP3229063B2 - Continuous paper cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous paper cutting apparatus for cutting a continuous paper while transporting the same, and more particularly to applying a tension to a continuous paper by using a difference in the transport speed between an in-feed roller and a high-speed roller to apply a blade to the continuous paper. The present invention relates to a continuous paper cutting device that cuts by abutting a cutting perforation.

[0002]

2. Description of the Related Art Conventionally, this type of continuous paper cutting apparatus has been known, but no measures have been taken to reduce noise during cutting.

[0003]

For this reason, conventionally, noise generated at the time of cutting has become a problem, and improvement thereof has been demanded. SUMMARY OF THE INVENTION The present invention has been made to meet this demand, and has as its object to provide a continuous paper cutting device in which noise during cutting is reduced.

[0004]

The inventor of the present invention has focused on the fact that one of the causes of noise at the time of cutting is due to the fluttering of the paper immediately after the cutting, and the noise can be reduced by suppressing the fluttering. A vertically displaceable guide member that guides the vicinity of the cut portion of the continuous paper upward during cutting, for example, an eccentric roller that protrudes into the transfer path of the continuous paper, and a conveyance that can move up and down near the cut portion of the continuous paper A belt and the like are provided.

[0005]

When the continuous paper is cut, the vicinity of the cut end is pressed from below by a guide member, so that the cut end is undulated up and down, thereby suppressing fluttering and reducing noise.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Here, FIG. 1 is a side view schematically showing a state immediately before cutting a sheet of the entire sheet processing apparatus provided with a continuous sheet cutting apparatus, FIG. 2 is an enlarged side view of the continuous sheet cutting apparatus, and FIG. It is an enlarged side view of the continuous paper cutting apparatus shown.

As shown in FIG. 1, near a lower end of the inside of a front door 2 that can be opened and closed of a sheet processing apparatus 1,
A guide plate 5 for guiding the continuous paper 3 placed in a predetermined state and pulled upward is provided above the placement section 4. Although not shown, the continuous paper 3 is provided with marginal portions provided with marginal holes on both sides in the width direction, and a large number of unit papers are connected via cut perforations. Subsequent to the guide plate 5, there is provided a tractor 6 that has a pin into which a marginal hole of the continuous paper 3 is fitted, and that pulls out and transports the continuous paper 3. On the guide plate 5 side of the tractor 6, a depinning sensor (not shown) for detecting that the continuous paper 3 has been detached from the pins of the tractor 6 is provided. Subsequent to the tractor 6, there is provided a transport belt 7 for transporting the continuous paper 3, comprising a plurality of thin belts stretched at predetermined intervals circulating in a counterclockwise direction in the drawing. Is provided with a pair of upper and lower marginal slitters 8 for cutting the marginal portion of the continuous paper 3.

Next, the cutting device will be described. A pair of low-speed upper and lower in-feed rollers 9 and a pair of high-speed upper and lower high-speed rollers 10 for applying tension to the continuous paper 3 by a difference in peripheral speed, that is, a difference in transport speed.
And a blade 11 that comes into contact with a cutting perforation of the continuous paper 3 and cuts the unit paper. The cut unit papers 3a are configured to be sequentially stacked on the stacker 17 that can be moved up and down. Also,
A rotatable eccentric roller 12 is provided between the belts corresponding to the forward path near the blades 11 of the conveyor belt 7. The eccentric roller 12 is located below the transport belt 7 in the standby state shown in FIG. 1, while the infeed roller 9 and the high-speed roller 10 hold the continuous paper 3 and apply tension to the paper during cutting.
As shown in FIG. 2, it is configured to be rotationally displaced and protrude on the transfer path to press the vicinity of the cut end of the continuous paper 3 from below.

A drive motor 13 for the in-feed roller 9 and a drive motor 14 for the high-speed roller 10
The control unit 15 is connected to an operation unit 16. Although not clear in the figure, the drive motor 1
Reference numeral 4 also serves as a drive source for the eccentric roller 12. Then, according to the conditions set by the operation unit 16, the control unit 15 controls each drive source of the in-feed roller 9, the high-speed roller 10, and the eccentric roller 12, and performs a rotation operation at a predetermined timing, As described above, the eccentric roller 12 is configured to protrude onto the transfer path at the time of cutting.

Next, the operation of the continuous paper processing apparatus 1 will be described. After pulling out the continuous paper 3 placed on the loading portion 4 in a predetermined state through the guide plate 5, the marginal hole is fitted to a pin of the tractor 6 and set in a predetermined state, and then the continuous paper processing device 1 is set. To start. The continuous paper 3 transported by the tractor 6 has its marginal portion cut and removed by a marginal slitter 8, and is transported via an infeed roller 9 toward a high-speed roller 10. At this time,
The eccentric roller 12 is in a standby state located below the transport belt 7 (see FIG. 1).

When the continuous paper 3 is cut by the high-speed roller 10 and the in-feed roller 9 to apply tension, the eccentric roller 12 in the standby state shown in FIG.
Is rotated to protrude into the transfer path of the continuous paper 3 as shown in FIG. 2 and press the cut end from below. In this state, the blade 11 abutting the cut perforation of the continuous paper 3 causes the perforation to be cut. Is broken and cut into unit paper 3a. Therefore, the cut end of the unit paper 3a is prevented from flapping in the vertical direction by the eccentric roller 12, so that no loud noise is generated. The unit sheets 3a cut in this way are sequentially stacked on the stacker 17.

Next, another embodiment of the guide member will be described with reference to FIG. In this embodiment, a pair of right and left fixed plates 21 to which both ends of a roller 22 extending below the conveyor belt 7 are fixed are supported by a rotating shaft 20.
The drive source of the rotating shaft 20 can be shared by the drive motor 14 as in the first embodiment. Then, in the standby state, the conveying belt 7 in which the roller 22 is in the normal state is used.
Of the fixing plate 2 when cutting is performed.
1 is rotated clockwise in FIG. 3 with the rotation of the rotation shaft 20, the roller 22 is displaced upward, and rises near the paper cut end of the conveyor belt 7, and the continuous paper 3 The cut end is pressed from below. Other configurations and operations are the same as those of the above-described first embodiment.
The description is omitted.

The present invention is not limited to the above-described embodiments.
A guide roller located in the vicinity of the blade 11 over which the belt is stretched may also be used, and the belt that moves up and down does not need to be all the transport belts 7. Further, the transfer of the continuous paper 3 may be performed not by the tractor 6 but by a transfer roller. Further, it goes without saying that the drive sources of the eccentric roller 12 and the rotating shaft 20 may be provided independently without being shared with the drive motor 14 of the high speed roller 10.

[0014]

As is clear from the above description,
According to the present invention, when cutting continuous paper, the guide member is raised to hold the cut end from below, and the cut end is suppressed from flapping in the vertical direction, thereby reducing noise generated at the time of cutting. The effect that it can be made is produced.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing a state immediately before sheet cutting of an entire sheet processing apparatus including a continuous sheet cutting apparatus.

FIG. 2 is an enlarged side view of the continuous paper cutting device.

FIG. 3 is an enlarged side view of a continuous paper cutting device showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper processing apparatus 3 Continuous paper 3a Unit paper 5 Guide plate 6 Tractor 7 Conveying belt 9 In-feed roller 10 High speed roller 11 Blade 12 Eccentric roller 13, 14 Drive motor 15 Control part 17 Stacker 20 Rotating shaft 21 Fixed plate 22 Roller

Claims (1)

(57) [Claims] A pair of upper and lower rotating in-feed rollers, a pair of upper and lower high-speed rollers rotating at a higher speed than the in-feed rollers, and a blade disposed between the pair of rollers. The pair of upper and lower rollers sandwich a continuous sheet formed by connecting a large number of unit sheets through a cutting perforation, apply tension using a difference in transfer speed, and apply the blade to the cutting perforation. A continuous sheet cutting device for cutting by contacting a continuous sheet, wherein a guide member displaceable in a vertical direction for guiding a vicinity of a cutting portion of the continuous sheet upward at the time of cutting is provided.