JPH0818267B2 - Cutting tool - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cutting tool, and more specifically,
The present invention relates to a cutting tool suitable for cutting a cylindrical article at right angles to its longitudinal direction and making a notch in the circumferential direction of a cylindrical article.

[Prior Art] Conventionally, a cylindrical article made of plastic or cardboard is cut at right angles to its longitudinal direction, or a cylindrical article made of rubber or soft plastic or a cylindrical food product is cut in the circumferential direction. Cutting knives have been used to insert.

[Problems to be Solved by the Invention] However, when the material of the cylindrical article or the cylindrical article is tough, there is a problem that the cutting edge of the slicing knife may slip and may cut a finger or a hand, and a fixed position. There is a problem that a great deal of skill is required to cut into a certain size with a certain size or to accurately make a notch in a circumferential direction at a certain position.

Therefore, the inventors of the present invention have devised the present invention as a result of intensive research to solve the above-mentioned problems of the conventional technology.

INDUSTRIAL APPLICABILITY The present invention is capable of safely and safely cutting a cylindrical article at a fixed position at right angles to its longitudinal direction, and makes a safe incision on a cylindrical article at a fixed position in its circumferential direction with good reproducibility. An object of the present invention is to provide a cutting tool capable of cutting.

[Means for Solving Problems] The object is to provide a cylindrical main body having an end plate having an opening formed at the center at one end and a perforated portion on a peripheral wall, and a concave groove on a surface parallel to the end surface of the cylindrical main body. A handle that is provided upright on the peripheral wall so that the concave groove communicates with the perforated portion at one end thereof; and a cutting blade that is inserted into the concave groove so that the concave groove can be grasped in the longitudinal direction of the handle. A support base, a cutting blade fixed to the support base in parallel with the groove forming surface of the handle and with its sharp end facing the perforated portion, and a bearing hole formed in the longitudinal direction of the handle. A bearing tool erected on the cutting blade support, a rotating shaft inserted through a bearing hole of a bearing body erected on the handle and screwed into the bearing hole of the bearing tool, This is achieved by a cutting tool that is configured by a locking tool that is slidably in contact with both side surfaces and that is fixed or formed on a rotating shaft.

[Operation] In the cutting tool of the present invention, when the rotating shaft is rotated in the clockwise direction or the counterclockwise direction, the bearing tool moves in the direction of the cylindrical body or in the opposite direction, and at the same time, the cutting blade support bases the peripheral wall in the concave groove. Sliding in the direction of the piercing part or in the opposite direction, and at the same time, the tip of the cutting edge loosely inserts the piercing part of the peripheral wall to advance into the internal space of the cylindrical body, or retracts into the piercing part and further into the concave groove. However, it does not move back and forth, left and right and up and down from its stop position.

Therefore, the cylindrical article or the circular shape where the tip of the cutting edge is in contact with the lower surface of the end plate in the inner space of the cylindrical body with the tip end of the cutting edge housed in the perforated portion of the peripheral wall or in the groove of the handle. Insert a columnar article, then rotate the rotating shaft to advance the tip of the cutting blade into the internal space of the cylindrical body and push it into the body of the cylindrical article or the cylindrical article, and then the handle and the cylindrical body. When is rotated in the direction in which the blade edge of the cutting blade is oriented, the cylindrical article can be cut at a fixed position at a right angle to its longitudinal direction, or a cylindrical article can be cut at a fixed position in the circumferential direction.

[Embodiment] A cutting tool according to an embodiment of the present invention will be described with reference to the drawings.

An end plate 3 having an opening 2 at the center thereof is present at the upper end of the cylindrical main body 1, and the lower end remains open. A rectangular perforated portion 5 is formed at a slightly upper portion of the peripheral wall 4 of the cylindrical main body 1, and its long side is located parallel to the end plate 3.

A square bar-shaped handle 6 having a groove 7 on the upper surface is provided upright on the peripheral wall 4 so as to communicate with the perforated portion 5 at one end of the groove 7. The groove 7 has a rectangular planar shape, and is elongated in the longitudinal direction of the handle 6. As shown in FIGS. 6 and 7, the concave groove 7 has a flat bottom, and the projecting edges 6 are provided on both sides of the groove entrance.
a and 6a are overhanging. The end of the groove 7 in contact with the peripheral wall 4 is open, but the end on the opposite side is closed.

A plate-shaped cutting blade support 8 is inserted in the groove 7. The lower edges of the projecting edges 6a, 6a at the groove entrance of the concave groove 7 and both edges of the upper surface of the cutting blade support base 7 are in close contact with each other, and both side surfaces of the cutting blade support base 8 and both inner side surfaces of the concave groove 7 are in contact with each other. Are in close contact with each other, and since the bottom surface of the cutting blade support base 8 and the bottom surface of the concave groove 7 are in close contact with each other,
The cutting blade support base 8 is slidable in the concave groove 7 in the longitudinal direction thereof, but is never removed from the concave groove 7. Cutting blade support 8
A flat-bottomed cutting edge accommodating groove is formed in a portion near the peripheral wall 4 at the upper part of the above, and the base of the cutting edge 9 is fixedly fastened to the cutting edge accommodating groove by a screw 10.

The tip 9a of the cutting blade 9 faces the perforated portion 5 of the peripheral wall 4, and the upper surface of the cutting blade 9 and the upper surface of the cutting blade support base 8 form the same plane.

An opening is formed in the lower part of the handle 6 toward the peripheral wall 4 from the center in the longitudinal direction.
11 are formed. The opening 11 has a rectangular planar shape, and its long side is positioned parallel to the longitudinal direction of the handle 6.

The opening 11 communicates with the concave groove 7, and a bearing tool 13 erected on the lower surface of the cutting blade support base 8 via a coupling tool 12 loosely inserts the opening 11 and projects to the lower surface of the handle 6. . A bearing hole having a circular cross section is formed in the bearing 13 in the longitudinal direction of the handle 6.
A thread is formed on the inner surface of the bearing hole.

A bearing body 15 is erected on the lower surface of the end of the handle 6 which is not in contact with the cylindrical main body 1, and a hole having a circular cross section is formed in the bearing body 15 in parallel with the longitudinal direction of the handle 6. . Bearing tool 13
And the hole of the bearing body 15 are located on the concentric shaft.

The rotating shaft 14 is provided with threads, and the rotating shaft 14 is screwed into the bearing hole of the bearing tool 13, is screwed into the nut 16, and is rotatably inserted into the bearing hole of the bearing body 15. And is screwed into the nut 17 and has a disc shape and has a non-slip outer peripheral surface.
Is planted in the center of. The nut 17 is fixed to the side surface of the knob 18. Since the nut 16 and the nut 17 are only in sliding contact with the side surface of the bearing body 15, both rotate together with the rotating shaft 14, but the rotating shaft 14 does not move axially. The nut 16 and the nut 17 function as a locking tool for the movement of the rotating shaft 14 in the axial direction. Here, the cylindrical body 1, the handle 6, the cutting blade support 8, the bearing tool 13, the rotating shaft 14, the bearing body 15,
The nuts 16 and 17 may be made of, for example, stainless steel, metal such as steel, polyacetal, or hard plastic such as fluororesin, and the cutting edge 9 is made of, for example, scrap or ceramic. May be. A pin penetrating the rotary shaft 14 may be used instead of the nut 16. The nut 17 may be omitted if the diameter of the knob 18 is sufficiently large.

In the cutting tool of this embodiment, when the knob 18 is rotated in the counterclockwise direction, the rotary shaft 14 also rotates in the counterclockwise direction, so that the bearing tool 13, the cutting blade support 8, and the cutting blade 9 move away from the cylindrical body 1. Move to
The tip 9a of the cutting blade 9 stops at the entrance of the perforated portion 5 (second
(See FIGS. 4, 4 and 7).

On the contrary, when the knob 18 is rotated clockwise, the rotary shaft 14 also rotates clockwise, and the bearing 13, the cutting blade support 8, and the cutting blade 9 move toward the cylindrical main body 1 and finally the cutting blade 9 The pointed portion 9a of the end plate 3 loosely inserts the perforated portion 5 and projects into the internal space of the cylindrical main body 1,
It stops at the same position as the tip of the (see FIG. 5).

That is, the tip portion 9a of the cutting blade 9 is formed by turning the knob 18 by hand, as shown in FIGS. 1 and 2, the entrance portion of the perforated portion 5, and the end plate 3 as shown in FIG. It can move between the same positions as the tip of the and can stop at any position between them.

Since the rotary shaft 14 is locked in the axial movement by the nuts 16 and 17, the tip portion 9a of the cutting blade 9 does not move from its stop position.

In order to cut a cylindrical article, for example, a main body of a cylindrical cartridge for sealant having a discharge port at its tip end, at a right angle to the longitudinal direction by the cutting tool of this embodiment, the position of the cutting blade 9 of the cutting tool is set to the first position. After the position shown in FIG. 2, the cylindrical cartridge for sealant is inserted into the internal space of the cylindrical main body 1 of the cutting tool, and the week edge of the tip end portion of the cartridge contacts the lower surface of the end plate 3 of the cutting tool. Contact. Then the knob
18 is rotated clockwise to slide the cutting blade support base 8 in the direction of the cylindrical main body 1, and the tip portion 9a of the cutting blade 9 passes through the perforated portion 5 of the peripheral wall 4 of the cylindrical main body 1 to form the cylindrical main body 1. By advancing into the internal space of the cartridge, the cartridge main body portion is made to bite. Next, when the cylindrical main body 1 and the handle 6 are rotated once clockwise around the main body of the cartridge, the main body of the cartridge is cut by the cutting edge of the cutting blade 9 at a right angle to its longitudinal direction.

The upper end of the cylindrical body has an end plate, and the bearing tool that is erected on the lower surface of the cutting blade support via the connecting tool projects to the lower surface of the handle,
Although the cutting tool in which the bearing body is erected on the lower surface of the handle has been described, the bearing tool is erected directly on the upper surface of the cutting blade support base,
A cutting tool in which the bearing body is erected on the upper surface of the handle may be used.
Further, the cutting tool may be one in which a groove is formed on the lower surface of the handle, the bearing tool is projected on the upper surface of the handle, and the bearing body is erected on the upper surface of the handle.

[Effect of the Invention] Since the cutting tool of the present invention has the configuration as described in the claims, the cutting blade tip portion of the cylindrical main body is rotated by rotating the rotary shaft clockwise or counterclockwise. It can be stopped at an arbitrary position by advancing into the internal space or retracting into the perforated portion and further into the concave groove, and does not move back and forth, left and right, and up and down from the stop position.

Therefore, with the tip of the cutting blade housed in the perforated portion of the peripheral wall or in the groove, insert the cylindrical article or the columnar article into the cylindrical body so that the tip contacts the lower surface of the end plate. Then, by rotating the rotary shaft, the tip of the cutting blade is advanced into the internal space of the cylindrical body and butted against the body of the cylindrical or cylindrical article, and then the cylindrical or cylindrical article When the cylindrical body and handle are rotated in the direction of the cutting edge of the cutting blade, the cylindrical article is cut at a fixed position at a right angle to its longitudinal direction, or a cylindrical article is cut at a fixed position in the circumferential direction. It can be inserted reproducibly and safely.

[Brief description of drawings]

FIG. 1 is a perspective view of a cutting tool according to an embodiment of the present invention,
2 is a plan view thereof, FIG. 3 is a side view thereof, FIGS. 4 and 5 are bottom views thereof, and FIG. 6 is a second view thereof.
FIG. 7 is a cross-sectional view taken along the line I-I of FIG. 7, and FIG. 7 is an enlarged view of a main part of a cross-section taken along the line II-II of FIG. 1 ... Cylindrical body, 2 ... Opening 3 ... End plate, 4 ... Peripheral wall, 5 ... Perforated part, 6 ... Handle, 7 ... Recessed groove, 8 ... Cutting blade support base, 9 ... Cutting blade, 9a …… Cutting edge point 11 …… Opening, 13 …… Bearing tool 14 …… Rotating shaft, 15 …… Bearing body 16 …… Nut, 17 …… Nut 18 …… Knob

Claims (1)

[Claims] 1. A cylindrical main body having an end plate having an opening formed at the center at one end and a perforated portion on a peripheral wall, and a concave groove on a surface parallel to the end surface of the cylindrical main body. A handle that is erected on the peripheral wall so as to communicate with the perforated portion at one end thereof, a cutting blade support that is inserted into the groove so as to be movable in the longitudinal direction of the handle, and the handle. A cutting edge fixed to the cutting edge support so that its tip faces the perforated part in parallel with the groove forming surface of the cutting edge, and a bearing hole is formed in the longitudinal direction of the grip. A bearing tool that is erected on the support base, a rotating shaft that is inserted through the bearing hole of the bearing body that is erected on the handle and screwed into the bearing hole of the bearing tool, and slides on both sides of the bearing body. A cutting tool comprising a locking tool that is in contact with and fixed to or formed on a rotating shaft.