JPS6241731Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field This invention can be used, for example, to form grooves on the surface of the butt portions of resin tiles in order to prevent the butt portions of resin tiles from lifting up due to moisture impregnation. This relates to a groove cutter.

Prior Art Conventionally, when pasting resin tiles, if they were left butted together as shown in Figure 1a, there was a defect that the butt portion 11 would absorb moisture and float up as shown in Figure 1b. . Therefore, a groove 12 is formed in the butt portion 11 as shown in FIG.
The exposed portion of the wire 13 is cut off and finished with paper as shown in Figure 2c. In this work, the groove cutter used to form the groove 12 of the butt portion 11 had a blade integrated into the handle. When the blade became dull, the craftsman would sharpen it each time. However, sharpening the cutting edge not only requires a lot of effort, but also requires great skill.

Purpose The purpose of this invention is to make the blade disposable in this type of cutter, and by making it possible to do so, it is possible to eliminate the labor of sharpening the cutting edge and to reduce the amount of chips. To provide a thin slice cutter that does not easily accumulate in a formed groove.

Structure of the Invention In order to achieve this objective, the present invention has a blade body whose tip is bent in a substantially U-shape to one side with respect to the blade attachment part at the tip of the handle, and the lower end of the U-shaped bend is the cutting edge. , which is removably attached.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
and a metal stay 3 protruding from the handle 2, and a blade attachment part 4 is provided at the tip of the stay 3. This blade attachment part 4 includes a blade attachment part 5 bent at an obtuse angle at the tip of the stay 3, and a pair of engagement protrusions 6 protruding from one side of this blade attachment part 5.
and a clamping member 7 having a U-shaped cross section and rotatably supported by a support shaft 7a to the tip of the blade mounting portion 5.

The blade body 8 is formed separately from the handle 1, and its tip is bent in a substantially J-shape toward the one side so that chips can be discharged to one side, and the J-shaped bent portion 9 A cutting edge 8a is formed at the lower end of the blade body 8, and a pair of engagement holes 10 are formed at the base of the blade body 8. The base of this blade body 8 is overlapped with one side of the blade attachment part 5, and at this time, the engagement hole 10 of the blade body 8 is fitted into the engagement protrusion 6 of the blade attachment part 5, and the blade body 8 is It is positioned relative to one side of the blade attachment part 5. Then, when the holding member 7 is rotated about the support shaft 7a and the base of the blade 8 is held together with the blade attachment part 5, the blade 8 is assembled to the handle 1.

After using the grooving cutter assembled in this way, if the cutting edge 8a becomes dull, rotate the holding member 7 in the opposite direction to separate it from the blade attachment part 5 and the blade body 8, and Pull out the engagement hole 10 of 8 from the engagement protrusion 6 of the blade attachment part 5, and insert the blade body 8 into the handle 1.
Remove from. Then, the blade body 8 is replaced with another blade body 8, and the same blade body 8 is attached to the handle 1 in the same manner as described above.

In this way, since the blade body 8 can be detachably attached to the handle 1, the blade body 8 can be made disposable, and unlike the conventional example described above, there is no need for any effort to sharpen the blade edge 8a. This is very convenient in practice.

Furthermore, the chips that are generated during the grooving operation and adhere to the cutting edge 8a are expelled to one side through the inner circumferential surface of the J-shaped bent portion 9, so that the chips are kept in the formed groove. Hard to accumulate. Therefore, there is no need for troublesome work such as removing chips accumulated in the groove after the groove cutting operation.

Note that the present invention is not limited to the above-mentioned embodiment, and it is also possible to make the holding member 7 of a sliding type or to make the holding member 7 separate from the blade attachment portion 5. Alternatively, a pair of engagement holes may be formed in the blade attachment portion 5, and an engagement protrusion formed on the blade body 8 may be fitted into the engagement holes.

Effects According to the present invention described in detail above, the tip is moved approximately J to one side so that chips can be discharged to one side.
By removably attaching the base of the blade 8 bent in a letter shape, and making the lower end of this J-shaped bent part 9 the cutting edge 8a, for example, the groove 12 of the butt part 11 of the resin tile is formed. In consideration of the fact that conventionally, there is no grooving cutter that can make this blade disposable, we have made it possible not only to eliminate the labor of sharpening the cutting edge 8a, but also to eliminate the need to sharpen the cutting edge 8a. Since the chips adhering to the cutting edge 8a are expelled to one side through the inner peripheral surface of the J-shaped bent portion 9, it is difficult for the chips to accumulate in the formed groove, which is very convenient in practice. It has a certain effect.

[Brief explanation of the drawing]

Fig. 1a is a partial cross-sectional view showing the state in which the resin tiles are bonded together, Fig. 1b is a partial cross-sectional view showing the abutting portion of the resin tile in a floating state, and Fig. 2a is a groove in the butt-butting portion of the resin tile. Fig. 2b is a partial sectional view showing a state in which a wire of the same quality is pasted in this groove, and Fig. 2c is a state in which the exposed part of this wire is cut out and finished with paper. 3 is an exploded perspective view showing a grooving cutter according to an embodiment of the present invention, FIG. 4 is a front view showing the blade body superimposed on the blade attachment part of the handle, and FIG. Figure 5 is an assembled front view of the same groove cutter, Figure 6 is the same rear view, Figure 7 is the same top view, Figure 8 is the same bottom view, Figure 9 is the same right side view, and Figure 10 is the same. It is a left side view. Handle 1, handle 2, stay 3, blade attachment part 4, blade attachment part 5, engagement protrusion 6, clamping member 7, support shaft 7a,
Blade body 8, cutting edge 8a, bent portion 9, and engagement hole 10.

Claims (1)

[Claims for Utility Model Registration] 1. The tip of the blade mounting portion 4 at the tip of the handle 1 is bent toward one side in a substantially J-shape so that chips can be discharged to one side. A grooving cutter characterized in that the base of a blade body 8 is detachably attached, and the lower end of this J-shaped bent part 9 is a cutting edge 8a. 2. The blade mounting part 4 has a blade mounting part 5 on one side of which the base of the blade 8 is overlapped, and a blade mounting part 5 formed in such a way that the engagement hole 10 formed in the base of the blade 8 is fitted. It includes an engagement protrusion 6 for positioning the blade protruding from one side, and a clamping member 7 that clamps the base of the blade 8 superimposed on one side of the blade attachment part 5 together with the blade attachment part 5. A grooving cutter according to claim 1 of the utility model registration claim. 3. The grooving cutter according to claim 2, wherein the holding member 7 is rotatably supported by a support shaft 7a with respect to the blade attachment portion 5.