JPH0719739Y2 - Round blade type cutter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cutter device used for cutting roll paper used in a facsimile or a copying machine, and more particularly, a circular blade is run along a straight blade. The present invention relates to a round blade type cutter device for cutting paper.

[Prior Art] Conventionally, as a cutter device of this type, a device that feeds a round blade for cutting by a rack gear (for example, the actual cutting machine 62-11
No. 7096) or, as shown in FIG. 3, there is one in which the round blade base 10 is fed by the wire rope 3 and the pulleys 4a, 4b, 4c.
It was difficult to send smoothly, the transmission efficiency was poor, and the cost was high.

[Problems to be solved by the device]

Among the conventional technologies, the rack gear method has a drawback in that the round blade can be fed smoothly, which often results in poor cutting, and it cannot be priced to use a highly accurate gear. It remains a problem. On the other hand, the wire rope feeding method has a drawback that the device cannot be downsized due to the pulley diameter, the number of pulleys, and the like, and the loss of transmitted power cannot be avoided. In addition, since the wire rope is a mini size with a diameter of less than 1 mm, it is difficult to average its safety and quality, and the possibility of wire cutting accidents is unavoidable.

[Means for Solving the Problems]

The present invention has considered screw feeding as a mechanism for eliminating the drawbacks of the prior art, aiming at a small size for measurement.

However, since measuring a screw with a small size and a long one would be expensive, we decided to use a very long and thin wire with a wire wound around it as the screw of the screw.

That is, a wire screw was constructed by winding and adhering a wire having a diameter of 1.0 mmφ on a wire having a wire diameter of 2.0 to 3.0 mmφ, and the wire screw was made to reverse by conduction from a motor.

Next, the assembly cost could be reduced by dividing the round blade base by a plane substantially parallel to the side surface of the round blade so that the running female screw formed on the round blade base was divided into two.

By the meshing of the wire screw and the female screw of the round blade base, we were able to obtain a feeding device that was small in size and weighed significantly less. This device has good transmission efficiency and can save labor in the drive source.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, the shaft wire 15 which is the first wire
A threaded wire 16 of a second wire is wound around the wire and these are adhered to each other to form a wire screw 17. On the other hand, the goal is to make a lightweight, compact, and low-cost screw. Therefore, it is desirable that the shaft wire 15 that is the shaft center be as thin as possible, but it is necessary to have rigidity, and in particular, it is necessary to give strength to the twist. . In this regard, the inventor tested various thicknesses and found that the
2.0mmφ wire is suitable for 300mm, length 40mm
It was found that a wire of 3.0 mmφ is suitable for 0 mm. Also, the screw part wire 16 to be wound can be used with a wire of 0.5 mmφ, but it is 1.0 m in view of safety from the endurance.
The wire was mφ. One end of wire screw 17 is gear 1
It is fixed on the rotating shaft of 8, and the other end is held by a wire receiver rotatably provided on the body 21. Gear 18 is gear
It meshes with 19 and is given rotation by a motor 20.
The round blade base 10 rotatably supporting the round blade 30 is configured so that the guide frame 22 integrally formed with the body 21 can reciprocate only in the cutting movement direction.
Mounted on 22. Further, the circular blade base 10 is provided with a female thread 13 for traveling having an axis in the cutting movement direction, and meshes with the wire screw 17. Then, the rotation of the gear 18 moves the round blade base 10 in the axial direction of the wire screw 17, that is, in the cutting movement direction, and the straight blade (not shown) attached to the body 21 and the round blade base 10 are rotatable. Further, the roll paper and the like are cut by the straight blade and the round blade 30 which is axially supported so that the blade edge is in contact with the straight blade.

On the other hand, the round blade base 10 may be an integral block, and the wire screw 17 may be screwed into the running female screw 13 at the time of assembly, but since the assembly work becomes complicated,
As shown in Fig. (A), the circular blade base 10 is divided by a plane substantially parallel to the side surface of the circular blade 30 so that the female screw 13 for traveling is divided into two, and the wire screw 17 is assembled at the time of assembly. Side block
The circular blade side block 11 and the inner block are sandwiched by the anti-broken female screw 11 and the semi-broken female screw of the inner block 12.
12 are bonded together. As a result, the assembly work is facilitated and the assembly cost can be reduced. Also, without attaching the inner block 12 to the round blade side block 11 by adhesion, only the half-cut female screw of the round blade side block 11 is
Just by engaging with the wire screw 17, the circular blade stand 10
Moves along the guide frame 22, so that the inner block 12 may be omitted.

[Effect of device]

INDUSTRIAL APPLICABILITY As described above, the present invention is effective as a lightweight, compact, and low-cost product as a round-blade feeding device of a round-blade type cutter device for cutting roll paper in a facsimile machine, a copying machine, etc. It is possible to move by smoothness and low power. Therefore, it is highly used as a feeder for other OA equipment.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the wire screw part of the present invention, FIGS. 2 (a) and 2 (b) show a round blade stand, (a) is a sectional view taken along line AA of (b), and (b) is A front view and FIG. 3 are front views showing a conventional round blade feeding mechanism. 10 …… Round blade stand, 11 …… Round blade side block, 12 …… Inner block, 13 …… Female thread for running, 17 …… Wire screw,
21 …… Body, 22 …… Guide frame, 30 …… Round blade.

Claims (1)

[Scope of utility model registration request] 1. A round blade type cutter device for cutting a paper by running a round blade along a straight blade, and a round blade base rotatably supporting the round blade and formed with a female screw for running. , First
It is configured by winding a second wire along the wire of
A round blade type cutter device comprising: a wire screw that meshes with the running female screw; and a mechanism that rotates the wire screw.