JPH0342970Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The invention is for attaching and fixing a cutting line such as a wire or thread used when cutting semi-plastic materials such as lightweight aerated concrete to a cutting line attachment member. This relates to the gripping structure used in this case.

<Prior art> For example, a device for cutting semi-plastic materials such as lightweight aerated concrete with a cutting line such as a wire was developed in the Japanese Patent Publication Publication No. 1973-
As is known from Japanese Utility Model Publication No. 28107 and Japanese Utility Model Application Publication No. 59-91807, when attaching a cutting line to these cutting devices, it is necessary to prevent local bending stress from being applied to the cutting line. It was hot. However, a conventional gripping structure for attaching a cutting line for cutting a semi-plastic body to a cutting line attachment member has generally been implemented as shown in FIG.

That is, in FIG. 4, a metal cylindrical nipple 2 having a hole 1 in the center in the axial direction is used, a wire 3 serving as a cutting line is inserted through the nipple 2, and the end of the wire 3 exposed from the end is inserted. Crush part 4 and make it large and flat so that it does not come out through hole 1.
Next, horizontal pressure is applied to the nipple 2 to crush and deform it as a whole, thereby bringing the wire 3 into close contact with the hole 1 of the nipple 2 and firmly fixing both of them. The structure was such that the wire 3 would not fall off from the wire 6.

<Problems to be solved by the invention> However, in the conventional gripping structure described above, the wire 3, which is the cutting line, is completely in close contact with the entire length of the hole 6 of the nipple 2, When cutting a plastic body with the wire 3, the wire 3 subjected to tensile force is subjected to concentrated bending stress at the outlet of the nipple 2 and is broken, resulting in a disadvantage that the life of the wire 3 is significantly shortened. .

For example, if wire 3 with a diameter of less than 0.7 mm is used, the life will be particularly short, so 0.8 mm
Although it was necessary to use the above thick wire 3, there was a drawback that when this thick wire 3 was used, the cut surface of the cut block became rough and smoothness could not be obtained.

The grip structure according to the present invention is a new technology developed in view of these conventional drawbacks, and is a completely new technology that can prevent bending stress from being concentrated on a part of the cutting line of a wire, etc. The aim is to provide a gripping structure that is easy to use.

<Means for solving the problem> The present invention fixes the end of the cutting line, and wraps the cutting line along the outer peripheral surface of a cylindrical body fixed to the cutting line attachment member. This is a structure for holding a cutting line of a semi-plastic block body, characterized in that the cutting line is inserted through a mounting hole of a cutting line mounting member.

<Function> As described above, the gripping structure according to the present invention is configured so that the cutting line with the fixed end is wrapped around the outer peripheral surface of the cylindrical body fixed to the cutting line attachment member.
Unlike conventional methods, the cutting line does not come into direct contact with the tip entrance of the nipple, which prevents local bending stress from being applied to the cutting line, thereby reducing breakage and wear of the cutting line. This can significantly extend its lifespan.

<Example> To specifically explain an example of the gripping structure according to the present invention using figures, in FIGS. 1 and 2,
Reference numeral 7 denotes an iron nipple with a diameter of 10 mm, and a hole 8 of 0.8 mm is bored in its axis. 3 is a cutting line, which is a wire made of piano wire with a diameter of 0.5 mm. After being inserted into the hole 8 of the nipple 7, the exposed end 4 is crushed into a flat shape and is removed from the nipple 7. It is constructed so that it does not fall out. Reference numeral 5 denotes a cutting line attachment member, in which two attachment holes 6 are bored at a predetermined interval. 10 is
It is a metal cylinder with a circumference of 10φ.

In assembling the structure of the present invention, as shown in FIGS. 1 and 2, the wire 3, which is the cutting line,
After inserting the wire 3 into one hole 6 of the member 5, winding the wire 3 around the cylindrical body 10 provided on the back side of the member 5, and then pulling out the wire 3 from the other hole 6 of the member 5. It can be configured.

The structure of the above embodiment can be further improved as shown in FIG. That is, in Figure 5,
The tip of the wire 3 and the nipple 7 are fixed to the nipple holding plate 11, and the wire 3 is inserted through a stopper plate 13 provided opposite the holding plate 11 via a coil spring 12, and then the wire 3 is inserted into a cylinder. It is also possible to wrap the holding plate 11 around the body 10 and pull it out, so that the holding plate 11 can be slid within the hollow portion 5a of the mounting member 5.

The cutting distance W when using the gripping structure according to the present invention was measured and compared with the conventional gripping structure, and the following results were obtained. In other words, when an ALC mortar block 9 with a height of 600 mm as shown in Fig. 3 A and B was cut with the wire 3, the wire 3 was broken after the conventional structure could only cut 65 m on average. On the other hand, using the structure of the present invention, it was possible to cut an average of 150 m (cutting distance W).

<Effects of the invention> Since the gripping structure according to the invention has the structure and function described above, when cutting a semi-plastic body along the cutting line, no local bending stress is applied to the cutting line. Breakage of the cutting line and breakage due to wear can be significantly reduced, and its lifespan can be greatly extended.This also makes it possible to use a cutting line with a small diameter, making it easy to create semi-plastic blocks with beautiful cut surfaces. It has the characteristics that it can be obtained reliably.

[Brief explanation of drawings]

Fig. 1 is a front view showing the structure of the present application, Fig. 2 is a perspective view thereof, Fig. 3 A is an explanatory drawing showing the cutting distance, Fig. 3 B is an explanatory drawing showing the state of use, and Fig. 4 is a conventional example. FIG. 5 is an explanatory diagram showing another embodiment. 3 is a cutting line, 4 is an end of the cutting line, 5 is a cutting line mounting member, 6 is a mounting hole, 9 is a block, and 10 is a cylindrical body.

Claims (1)

[Scope of utility model registration request] The end of the cutting line is fixed, the cutting line is wound around the outer peripheral surface of a cylindrical body fixed to the cutting line mounting member, and the cutting line is inserted into the mounting hole of the cutting line mounting member. A gripping structure of a semi-plastic block body cutting line.