JPH09109089A - Circular cutting method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut out a circular plate neatly and easily from a thin plate by providing a center positioning member at the lower face center part of a lower holding member extended in a diametrical direction, and providing a cutting edge in a position away from the center of the center positioning member, on a line extended toward the center in such a way as to be adjustable in longitudinal movement. SOLUTION: A parallel recessed groove 2 is provided on the centerline of a lower holding member 1, and an upper holding member 3 is jointed to the upper face of the lower holding member 1 by countersunk head machine screws 4. A positioning member 6 is provided at the lower face center of the lower holding member 1, and a small width cutout groove 8 for fitting a cutting edge fitting member 7 is provided at the lower face of the recessed groove 2, outward from a center area. The cutting edge fitting member 7 is positioned by fixing an L-shape holding part 7, inserted in a bolt insert cutout groove 9 formed at the upper holding member 3, by a bolt 10. While holding the upper holding member 3 with a hand, a cutting edge 5 is rotated around a center positioning member 6 to cut out a disc from a cut member by a cutting edge 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circular cutting capable of neatly and easily cutting a circular plate material from a thin plate material such as paper or plastic to which an adhesive agent is added, synthetic resin plate, cardboard or veneer plate. The present invention relates to a method and an apparatus.

[0002]

2. Description of the Related Art Generally, in order to form a circular plate material from a thin plate, a method is generally used in which a circular material required for the plate material is drawn in advance or is cut out with scissors in accordance with a drawn line. In this case, it is difficult to cut out an accurate circle with the scissors, and when the adhesive material is present, the adhesive material sticks to the scissors and cannot be cut accurately. It has the drawbacks of making the protective material rupture and sticking it out to the surface of the adhesive or sticking it, or causing pain when it comes into contact with an incompletely cut surface, which may cause unpleasant feelings.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional drawbacks and to provide a circular cutting method and device which can neatly and easily perform circular cutting.

[0004]

A circular cutting method and apparatus of the present invention is a combination of a lower holding member and an upper holding member for holding a cutting blade, and a cutting blade for rotating the cutting blade at the center of the lower surface of the lower holding member. A center positioning member is provided, a cutting blade is provided at a position distant from the positioning member so as to be movable back and forth on a line toward the center, and the cutting blade is provided at a position perpendicular to the line toward the center, and the cutting is performed. A disk is hollowed out by a cutting blade by rotating the blade around a central positioning member, and the invention of claim 2 is characterized in that the lower holding member and the lower portion are formed with a groove having the same width parallel to the center line. The upper holding member is joined to the upper surface of the holding member with screws or rivets, and a central positioning member for rotating the cutting blade is attached to the central portion of the lower surface of the lower holding member. Further, a small-width cutout groove for the cutting blade attachment member is provided outward from the vicinity of the center on the lower surface of the groove of the lower holding member, while the upper holding member corresponds to the cutout groove of the concave groove. A notch groove for a mounting bolt is provided at a position, and an L-shaped holding portion of a cutting blade mounting member is inserted into the concave groove, and then a lower holding member and an upper holding member are combined to mount the cutting blade in the concave groove. The member is held so as to be movable back and forth, the cutting blade mounting member is mounted so as to be movable and fixed from the upper holding member side by a mounting bolt, the cutting blade is mounted on the cutting blade mounting member, and the distance from the center is set. The cutting blade mounting member is fixed by, and the cutting blade of the circular cutting device is rotated about the center positioning member to cut a circular plate material from the plate material to be cut. According to a third aspect of the present invention, a circular cutting device formed by combining an upper holding member and a lower holding member has an outer peripheral shape of a circular shape, and a jagged or corrugated shape is provided on the circular outer circumference. 5. The circular cutting device according to claim 4, wherein the outer peripheral surface is formed in a shape such that it has a triangular shape or more and a polygonal shape such as a triangle or more, and the outer peripheral surface projects toward the side where the cutting blade is provided and is easy to hold. The center positioning member provided in the above is formed in a cylindrical shape or a cylindrical tip having a pointed shape capable of being pierced into a mating member. 7. A container having a hole for accommodating a member provided near the center of the bottom is formed, and the circular cutting device is positioned and fixed in the container through the hole to be housed therein. Is the bottom of the container A hole for inserting the center positioning member of the circular cutting device from the outside is provided in the central part of the container, and a recess for mounting the plate material to be cut is provided on the outside of the bottom surface, and the bottom surface of this container faces upward to be cut. After positioning the plate material, insert the center positioning member into the hole of the central part and attach the circular cutting device, adjust the moving position of the cutting blade, and then rotate the circular cutting device to cut the plate material to be cut into a circle. It is a feature.

[0005]

The circular cutting method and cutting apparatus of the present invention have the advantages that they can be easily carried out due to their simple structure and that a circular plate material having a much cleaner cutting surface than the conventional scissors cutting surface can be obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will now be described in more detail with reference to the drawings. FIGS. 1 to 4 show embodiments of a circular cutting method and a cutting device according to the present invention. FIG. 3 is a plan view of the circular cutting device according to the present invention viewed from the lower holding member side, in which a groove 2 parallel to the center line of the lower holding member 1 is provided, and an upper holding member 3 is provided on the upper surface of the lower holding member 1. It is joined with screw 4. A center positioning member 6 for rotating the cutting blade 5 is provided at the center of the lower surface of the lower holding member 1, and a cutting blade attachment member 7 is attached to the lower surface of the groove 2 from the vicinity of the center toward the outside. A narrow cutout groove 8 is provided for this purpose. On the other hand, the upper holding member 3 is provided with a notch groove 9 for inserting a bolt for fixing the cutting blade mounting member 7 at a position corresponding to the notch groove 8 provided in the concave groove 2, and cuts in the concave groove. After inserting the L-shaped holding portion 7 ′ of the blade mounting member 7, the lower holding member 1 and the upper holding member 3 are combined and the cutting blade mounting member 7 is inserted and held in the concave groove 2 so as to be movable back and forth, Bolts 10 are provided in the notch grooves 9 provided in the holding member 3.
After the cutting blade mounting member 7 is positioned by inserting, the cutting blade mounting member 7 is screwed and fixed in the bolt hole 11 of the L-shaped holding portion 7 '. On the upper part of the cutting blade attachment member 7, a cutting blade 5 made of a thin steel plate is fixed by bolts 12 so as to be vertically movable. In this embodiment, the lower holding member 1 is formed by using a square plate and is inserted into the upper holding member 3. However, a circular shape that matches the shape of the upper holding member is used. You may form. Further, the upper holding member 3 is formed by corrugating the periphery and providing a corrugated shape, and is further formed by bending the periphery inward. However, if the shape is easy to hold, only the circle is provided, or the circular periphery is provided with a notch, The shape is not particularly limited as long as it has a shape that is easy to hold, such as a polygon having a triangular shape or more. Further, in the present embodiment, the center positioning member 6 has a shape in which a container 13 for positioning the circular cutting device is formed and a hole 14 is provided at the center of the bottom surface of the container 13 for insertion, so that the circular cutting device is positioned. However, when the plate material 15 to be cut is a plate-shaped wood, the center positioning member 6 is used.
The tip may be formed into a pointed shape that can be pierced into the mating material. Alternatively, as shown in FIGS. 7 and 8, a member 17 having a hole 16 at one end and a sharp tip at the other end may be separately formed at the tip end of the cylindrical shape to be inserted. It should be noted that the structure in which an interference member such as a spring is inserted as shown in FIG. 8 is more preferable because the cutting can be performed while reducing the cutting resistance of the work material at the time of cutting.

In the case of the present embodiment, it is necessary that the plate material 15 to be cut is a protective sheet for artificial anus, and after it is cut into a neat circle, the sheet on the surface is peeled off and attached to the artificial anus. , If the outer circumference of the sheet is cut off, it causes irritation to the skin when it is attached around the artificial anus and causes discomfort, so it is necessary to use a thin blade cutter with excellent cutting sharpness, so such a small size cutter is required. Although configured, the size of this device is not particularly limited. Further, in order to house this circular cutting device and to allow the plate material 15 to be cut easily, a box-shaped container 13 is prepared, and the center positioning member 6 of the circular cutting device 6 is provided near the center of the bottom portion thereof. A hole 18 into which the hole is inserted is provided, and the center positioning member 6 is inserted into the hole 18 to accommodate the circular cutting device, which is easy to carry. When using this cutting device, a concave portion 19 for accommodating the plate material 15 to be cut is provided on the outer side of the bottom surface of the container 13, and a hole 1 for accommodating the center positioning member 6 in the central portion thereof.
4, the circular cutting device is attached, and the plate material to be cut 1
5 is cut into a required circular shape.

[0008]

As described above, according to the circular cutting device of the present invention, the lower holding member and the upper holding member are combined to hold the cutting blade so that its position can be adjusted, and the thin steel blade of the circular cutting device is used as the center positioning member. Since it is formed so as to cut the plate material to be cut into a circle by rotating it through, there is an advantage that it can cut into a clean circle despite the simple structure. The present invention has an excellent advantage that a circular cutting device and a plate material to be cut can be positioned using the bottom surface of the container to cut a clean circular plate material.

[Brief description of the drawings]

FIG. 1 is a plan view of a circular cutting device according to the present invention viewed from a lower holding member side.

FIG. 2 is a plan view seen from the opposite side of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a plan view of the container accommodating the cutting device of the present invention as seen from the bottom side.

FIG. 6 is a sectional view taken along line CC of FIG. 5;

FIG. 7 is a side view of a piercing member having a pointed shape formed at its tip so that it can pierce a mating material.

8 is a side view showing a modified example in which a spring is inserted inside the member shown in FIG.

[Explanation of symbols]

 1. Lower holding member. 2. Groove. 3. Upper holding member. 4. Plate screw. 5. Cutting blade. 6. Center positioning member. 7. Cutting blade mounting member. L-shaped holding part for 7'cutting blade mounting member. 8. Notch groove provided in the concave groove 2. 9. Notch groove for bolt insertion. 10. bolt. 11. Bolt holes. 12. bolt. 13. container. 14． A hole in the container. 15. Plate material to be cut. 16. hole. 17． Separate member. 18. A hole in the container. 19. The recess of the container. 20. Puncture member.

Claims (6)

[Claims] 1. A circular cutting method and apparatus for hollowing a disc from a thin plate material, wherein a lower holding member and an upper holding member are combined to hold a cutting blade, and a cutting blade is rotated at a central portion of a lower surface of the lower holding member. A central positioning member for use in the positioning is provided, and a cutting blade is provided between the upper and lower holding members at a position away from the center of the positioning member so that the cutting blade can be moved forward and backward. A circular cutting method and device, characterized in that they are provided at right angles to each other, and the cutting blade is rotated around a central positioning member to hollow a disc from a plate material. 2. A circular cutting device comprising a lower holding member in which a groove having the same width is formed parallel to the center line and an upper holding member joined to the surface of the lower holding member with a screw, a rivet or the like. A central positioning member for rotating the cutting blade is attached to the central portion of the lower holding member, and a small width for the cutting blade attachment member is attached to the lower surface of the concave groove of the lower holding member outward from the vicinity of the center. A notch groove is provided, and on the other hand, an upper holding member is provided with a notch groove for inserting a mounting bolt at a position corresponding to the notch groove of the concave groove,
After inserting the L-shaped holding portion of the cutting blade attaching member into the groove, the lower holding member and the upper holding member are combined to hold the cutting blade attaching member in the groove so as to be movable back and forth, and the upper holding member. From the side, the cutting blade mounting member is movably mounted by a mounting bolt, the cutting blade is mounted on the cutting blade mounting member and the distance from the center is set, and then the cutting blade mounting member is fixed by the bolt, and the circular cutting is performed. A circular cutting device, characterized in that the device is configured to rotate around the central positioning member to cut a circular plate material. 3. The outer peripheral shape of a circular cutting device formed by combining an upper holding member and a lower holding member is a circle, a shape in which a jagged or corrugated shape is provided on the outer circumference of a circle, a polygon with three or more triangles, or the like. The circular cutting device according to claim 1 or 2, wherein the outer peripheral surface of the circular cutting device is formed in a shape that makes it easy to hold by projecting to the side where the cutting blade is provided. 4. The center positioning member provided in the circular cutting device has a columnar shape or a columnar tip formed in a pointed shape capable of being pierced into a mating member. The circular cutting device described. 5. A container having a hole for accommodating a center positioning member of a circular cutting device is provided near the center of the bottom,
A container with a lid, wherein the circular cutting device is configured to be positioned and fixed in the container through the hole to be housed. 6. A hole for inserting a center positioning member included in a circular cutting device from the outside is provided at the center of the bottom of the container, and a recess for placing a plate material to be cut is provided on the outside of the bottom surface of the container. After positioning the plate material to be cut in the recess with the bottom surface facing upward, insert the center positioning member into the hole at the center to attach the circular cutting device, and after rotating the circular cutting device after adjusting the moving position of the cutting blade. A circular cutting method and a cutting device, characterized in that a plate material to be cut is cut into a circular shape.