JP3053817B2 - Continuous paper cutting device - Google Patents

Description

The present invention relates to a pair of upper and lower rotating infeed rollers, a pair of upper and lower high-speed rollers rotating at a higher speed than these infeed rollers, and a pair of upper and lower rotating rollers. A continuous paper cutting device comprising a pair of upper and lower rollers for holding continuous paper, and utilizing the difference in transport speed to cut the continuous paper at a horizontal perforation position using the blade. And in particular, its blades.

2. Description of the Related Art Blades in a conventional continuous paper cutting device of this type are:
When roughly classified, there are a plate-shaped flat blade shape and a column-shaped spindle shape (in the present specification, the spindle shape means that a column-shaped central portion in the longitudinal direction is thicker than both end portions). In general, the spindle type is characterized in that, unlike the flat blade type, an extremely local force is not applied to the continuous paper, and a dispersed force is applied.

Problems to be Solved by the Invention For this reason, the spindle type blade has an advantage that a smoother cutting operation is performed than the flat blade type blade. However, on the other hand, when a dispersed force is applied, continuous paper provided with vertical perforations may also cut the vertical perforations when cutting at horizontal perforations.

SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous paper cutting device provided with a spindle-shaped blade that solves this problem.

Means for Solving the Problems In order to achieve the above object, the present invention provides a spindle shape in which a part of the peripheral surface is cut out, and a continuous state between a pair of upper and lower infeed rollers and a high speed roller during standby. While retracted from the paper transport path,
At the time of cutting, a blade provided so as to cut continuous paper by being rotationally displaced and protruding from the continuous paper transfer path is used.

Action While the advantages of the spindle type are maintained, the distribution of the force applied to the continuous paper is suppressed by notching a part of the peripheral surface. Thus, even when the continuous paper is provided with the vertical perforations, the vertical perforations are not cut when the horizontal perforations are cut.

Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Here, FIG. 1 is a schematic side view showing the whole continuous paper processing apparatus provided with a continuous paper cutting apparatus, FIG. 2 is a side view showing the continuous paper cutting apparatus in more detail, and FIG. FIG. 4 is a front view of the infeed roller.

As shown in FIG. 1, a continuous sheet 1 to be cut into unit paper 1a at a folding / cutting perforation 2, which is a horizontal perforation, is folded in a zigzag shape at the folding / cutting perforation 2 at a predetermined position. The transport holes (not shown), which are mounted on the tractor 4 and are pulled out upward and are provided at equal intervals in the marginal portions 3 (only one is shown) provided on both sides in the width direction, are engaged with the tractor pins of the tractor 4. The tractor 4 is configured to be transported rightward in FIG. 1 by being rotationally driven by a main motor (not shown). Then, the continuous paper 1 is cut off at the marginal portion 3 by a slitter 5 disposed near the end of the tractor 4 in the transport direction, is further transported in the same direction, and is supplied to the continuous paper cutting device 6.

 Next, the continuous paper cutting device 6 will be described.

As shown in FIG. 1, following the tractor 4, a pair of upper and lower infeed rollers 7a and 7b are disposed so as to be movable in the contact and separation directions at an interval of about 1 mm, and these infeed rollers 7a and 7b And a pair of upper and lower high-speed rollers 8 which are arranged opposite to each other at a predetermined interval in the transport direction of the continuous
a, 8b are provided. As can be understood from FIGS. 2 and 4, the upper and lower pair of infeed rollers 7a, 7b
And the high-speed rollers 8a and 8b have the same shape, each having a maximum diameter at the center in the longitudinal direction, and having a shape that gradually reduces the diameter by drawing a curve toward both ends. Since the pair of upper and lower infeed rollers 7a, 7b and the high speed rollers 8a, 8b have the same shape, only the infeed rollers 7a, 7b are shown in FIG. Although not shown, the pair of upper and lower infeed rollers is
The high-speed rollers 7a, 7b and the high-speed rollers 8a, 8b are connected to the above-described main motor (not shown), which is also a driving source of the tractor 4, via a suitable rotational driving force transmission mechanism. Also, the high-speed rollers 8a and 8b are configured to rotate at a higher speed.

As shown in FIGS. 1 and 2, a standby state (a state shown in FIG. 1 and an imaginary line in FIG. 2) is provided between the pair of upper and lower infeed rollers 7a, 7b and the high speed rollers 8a, 8b. In the illustrated state), the blade body 9 is disposed so as to be rotatable clockwise in FIGS. 1 and 2 so as to be positioned below the transfer path of the continuous paper 1. The blade body 9 is
As is clear from FIGS. 2 and 3, six identical spindle-shaped blades 9a are connected and fixed to the rotating shaft 10 in the same eccentric state, and the peripheral surface of each blade 9a is two places. Are cut out so as to extend in parallel with the rotating shaft 10, and two notched planes 9b and 9c are formed. The notch plane 9b is formed to be larger than the notch plane 9c, and in a standby state, the notch plane 9c is positioned parallel to the continuous paper transport path, while the blade body 9 is rotated together with the rotating shaft 10 so that the notch is formed. The continuous sheet 1 is configured to be cut when the peripheral surface near the flat surface 9b comes into contact with the folding / cutting perforation 2 (see the state shown by the solid line in FIG. 2). That is, the blade body 9
With the rotation of the paper, the notch plane 9b is
When passing through a position parallel to the transfer path of the continuous paper 1, the peripheral surface of the blade body 9 is projected from the transfer path of the continuous paper 1, and the peripheral surface near the notch plane 9 b becomes the folding and cutting perforation 2. In synchronization with the contact, the pair of upper and lower infeed rollers 7a, 7b and the high-speed rollers 8a, 8b sandwich the continuous paper 1 and apply tension to the continuous paper 1. The rotation control of the blade body 9 and the approach control of the in-feed rollers 7a, 7b and the high-speed rollers 8a, 8b, that is, the control of the cutting timing, are performed between the blade body 9 and the high-speed rollers 8a, 8b. A pair of paper edge detectors 11a and 11b arranged so as to sandwich the transport path of the continuous paper 1 up and down, based on a leading edge detection signal generated when detecting the leading edge of the transported continuous paper 1,
This is performed by a drive control signal issued from a control device (not shown).

Further, as described above, the pair of upper and lower infeed rollers 7a, 7b and the high-speed rollers 8a, 8b move closer to each other when cutting the continuous paper 1 in synchronization with the rotation of the blade body 9. While holding the paper 1, the blade 9
In the non-cutting state including the standby state, the in-feed rollers 7a and 7b and the high-speed rollers 8a and 8b are controlled by the control device so as to be in the separated state. The infeed rollers 7a, 7b
A guide plate 1 for guiding both ends in the width direction of the continuous paper 1 is provided on the front side in the transfer direction with the high-speed rollers 8a and 8b.
2,13 are provided.

Subsequent to the above-described continuous paper cutting device 6, as shown in FIG. 1, a pair of upper and lower transfer rollers 14a and 14b for transferring the cut unit sheet 1a is provided, and these transfer rollers 14a and 14b are provided.
The unit papers 1a transported by the above are configured to be sequentially stacked on the stacker 15.

Subsequently, the cutting operation of the continuous paper 1 in the present embodiment configured as described above will be described.

As shown in FIG. 1, the continuous paper 1 folded and placed in a predetermined state is pulled up, transported in a predetermined direction by a tractor 4, the marginal portion 3 is removed by a slitter 5, and further continuous paper cutting is performed. It is transferred to the device 6. When the leading edge of the continuous paper 1 is detected by the leading edge detectors 11a and 11b, the blade body 9 is rotated clockwise in FIGS. 1 and 2 by a drive control signal from a control device based on the detection signal. On the other hand, the upper and lower pairs of in-feed rollers 7a and 7b and the high-speed rollers 8a and 8b are moved in the approaching direction, respectively. When the continuous paper 1 is nipped by the in-feed rollers 7a, 7b and the high-speed rollers 8a, 8b, the blade body 9 that has been rotationally displaced projects into the state shown in FIG. It will be in the state of having done. Thereby, the infeed roller 7
A tension is applied to the continuous paper 1 by the difference in the transfer speed between the high speed rollers 8a and 8b and the high speed rollers 8a and 8b, and the peripheral surface near the notch plane 9b of each blade 9a is provided at the folding / cutting perforation 2 portion. , The continuous paper 1 is cut at the folding / cutting perforation 2 and becomes the unit paper 1a. The unit paper 1a is transferred from the high speed rollers 8a, 8b to the transfer rollers 14a, 1b.
4b, further transferred by the transfer rollers 14a, 14b, and sequentially stacked on the stacker 15. The continuous paper 1 is transferred from the high-speed rollers 8a and 8b to the transfer rollers 14a and 14b.
In the transfer operation for feeding the continuous paper 1, since each blade 9a is provided eccentrically to the rotation shaft 10,
The peripheral surface of 9a gradually retreats downward from the transport path of the continuous paper 1 so as to be smoothly performed. Further, in the present embodiment, the pair of upper and lower infeed rollers 7a, 7b and the high-speed rollers 8a, 8b are formed in a cylindrical shape whose central portion in the longitudinal direction is larger in diameter than both ends, so that it is continuous. There is an advantage that the force on the continuous paper 1 is uniformly applied when the paper 1 is clamped, and the cutting operation of the continuous paper 1 is performed more smoothly.

In addition, the present invention is not limited to the above-described embodiment.For example, the blade body 9 may not be configured by a plurality of blades 9a, but may be configured by a single spindle-shaped blade 9a that is enlarged. Even in the case of a plurality of blades, the number of blades 9a is not limited to six. The notch planes 9b and 9c are not two but one.
The shape may be only a surface, and the shape of the cutout portion is not limited to a flat shape or a curved surface. Further, the blade 9a may be fixed to the rotary shaft 10 not in an eccentric state but in a coaxial state. In addition, the blade 9a may be arranged above the transport path of the continuous paper 1 instead of below it. Furthermore, the cutting timing of the continuous paper 1 is determined by the in-feed rollers 7a and 7a.
b and the high-speed rollers 8a and 8b are controlled by the approach timing. In addition, the in-feed rollers 7a and 7b and the high-speed rollers 8a and 8b are configured to always hold the continuous paper 1 and the in-feed rollers The control may be performed by adjusting the distance in the transfer direction between the high-speed rollers 8a and 8b and the high-speed rollers 8a and 8b. In addition, the infeed roller
7a, 7b and one of the high-speed rollers 8a, 8b, or one of the upper and lower rollers 7a, 7b, 8a, 8b, and one of the rollers 7a, 7b, 8a, 8b. Only one of the rollers may be formed in a cylindrical shape whose central portion in the longitudinal direction is larger in diameter than both ends, or each of the rollers 7a, 7b, 8a, 8b is formed such that the peripheral surface extends parallel to the axis. Is also good. Further, since the paper leading edge detectors 11a and 11b are arranged between the in-feed rollers 7a and 7b and the high-speed rollers 8a and 8b, the leading edge of the continuous paper 1 can be detected every time the cutting operation is performed. The cutting position is corrected, and the sheet cutting operation at an accurate position can be performed at all times. By disposing a leading edge detector serving also as a jam sensor or the like on the subsequent side of 8b, and detecting the leading edge of the continuous paper 1 every time the cutting operation is performed by these detectors,
A similar effect can be obtained.

Effect As is apparent from the above description, according to the present invention, a part of the peripheral surface of the spindle-shaped blade is cut off, and during standby, it is retracted from the continuous paper transport path between the pair of upper and lower infeed rollers and the high-speed roller. On the other hand, by cutting the continuous paper by rotating and protruding with respect to the continuous paper transport path at the time of cutting, the advantage of the spindle type is maintained while the force applied to the continuous paper is dispersed. Suppressing, even in the case of continuous paper provided with vertical perforations, when cutting horizontal perforations, the vertical perforations are not cut, and the effect of always performing a smooth cutting operation can be achieved. Play.

[Brief description of the drawings]

FIG. 1 shows a preferred embodiment of the present invention. FIG. 1 is a schematic side view showing an entire continuous sheet processing apparatus provided with a continuous sheet cutting apparatus, and FIG. 2 shows the continuous sheet cutting apparatus in more detail. FIG. 3 is a front view of the blade, and FIG. 4 is a front view of the infeed roller. 1 continuous paper, 2 perforations for folding and cutting, 4
Tractor, 6 Continuous paper cutting device, 7a, 7b In-feed roller, 8a, 8b High-speed roller, 9
Blade body, 9a …… Blade, 9b, 9c …… Notched plane

Claims (1)

(57) [Claims] 1. A pair of upper and lower rotating infeed rollers, a pair of upper and lower high speed rollers rotating at a higher speed than these infeed rollers, and a blade disposed between the upper and lower pair of rollers. A continuous paper cutting device for nipping continuous paper between the pair of upper and lower rollers, and cutting the continuous paper at a horizontal perforation position using the blade by using a difference in transport speed between the rollers; The notched blade is in a state of retreating from the continuous paper transport path between the pair of upper and lower rollers at the time of standby, while it is rotated and protruded with respect to the continuous paper transport path during cutting to cut the continuous paper. A continuous paper cutting device provided for cutting.