JPH0525832Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a structure for gripping the end of a wire such as a wire or thin wire used when cutting a semi-plastic material such as lightweight cellular concrete. It is something.

[Conventional technology]

As a device for cutting semi-plastic materials such as lightweight aerated concrete with wire rods, for example,
As shown in FIG. 4, a semi-plastic body 9 is gripped at both ends and moved to the right by the rightward movement of the upper and lower mounting members, as shown in FIG. The end portion is placed in a cylindrical storage body 13 fixed to a pedestal 15 movable on a rail 16, as shown in FIG. A device for cutting a semi-plastic body 9 using a wire rod 3 housed therein is known.

The gripping structure of the end of the wire rod for cutting the semi-plastic material in such an apparatus is as follows.

That is, in the cutting device shown in FIG. 4, as shown in FIG. By crushing the end of the wire 3 and applying pressure to the horizontal part to prevent it from coming out through the hole 1, the entire wire is crushed and deformed, thereby bringing the wire 3 into close contact with the hole 1 of the nipple 2 of the cylindrical body, and making both of them strong. The end of the wire 3 is held in place so that the wire 3 does not slip out from the hole 6 of the cutting wire attachment device 5.

However, with the above gripping structure, local bending stress is applied to the cutting line, resulting in a short cutting life of the wire when cutting the semi-plastic body. Therefore, in 1988,
Publication No. 97711 proposes the use of a circular nipple 7 as shown in FIG. 6. After inserting the wire 3 into the hole 8 as shown in FIG. It has also been proposed to crush and use it.

Furthermore, in Japanese Patent Application Laid-Open No. 60-54809, which describes the cutting device shown in FIG. , is fixed to the winding drum 12 by crushing the elongated cylindrical nipple 19, and as shown in FIG.
2 is housed in a cylindrical accommodating body 13 in which a spring 14 is inserted, and the cylindrical accommodating body 13 is fixed to a pedestal 15. As shown in FIG. 8, the cylindrical storage body 13
guided by a guide roller 17 fixed to
The wire rod 3, which is held at both ends in the two left and right cylindrical storage bodies 13, is configured such that both ends are pulled by the action of the spring 14 in response to the resistance of the semi-plastic body 9 when cutting. There is.

[The problem that the idea aims to solve]

However, even if the circular nipple 7 proposed in Japanese Utility Model Application Laid-Open Publication No. 62-97711 is used as shown in FIG. 6 or FIG. 7, the smooth cut surface of the semi-plastic body 9 cannot be obtained if a wire having a diameter of less than 0.7 mm is used.
Compared to the cylindrical nipple in Figure 4, the life of the wire (the life until the wire breaks) is extended, but
There is still a drawback in that the wire is easily cut on the gripping structure side due to local bending stress on the wire.

Furthermore, if the winding drum system shown in FIG. 10 is used at the end as shown in FIG. 4, the life of the wire will be short.
Therefore, if the force of the spring 14 is utilized as shown in FIGS. 8 and 9, the life will be extended. However, even this did not mean that a sufficient lifespan could be obtained.

The purpose of the present invention is to provide a wire end gripping structure for cutting semi-plastic materials that can extend the life of the wire (the lifespan until the wire breaks) than these conventional gripping structures. .

[Means to solve the problem]

The end gripping structure of the wire rod for cutting a semi-plastic body of the present invention is such that the wire rod for cutting the semi-plastic body is inserted into the hole of a spherical nipple, and the nipple and the wire are brought into close contact with each other by pressure. In the wire rod end gripping structure for use, a hollow wire exists between the nipple and the wire such that the upper end of the hollow wire protrudes above the wire attachment device on the upper part of the nipple,
This is a structure for gripping the end of a wire for semi-plastic cutting, characterized in that the hollow wire is closely attached to the nipple and the wire.

The spherical nipple used in the present invention is made of the same material as conventionally used nipples, such as iron, shell, brass, etc., and has a hole formed in the center. It is preferable that the hardness of this material be the same as that of the wire rod described later, or a material with a slightly lower hardness because it will not put a burden on the wire rod.

Further, the wire material for cutting the semi-plastic body is a conventionally used piano wire, wire, thin wire, or the like.

The hollow wire used in this invention is made of iron,
The body can be made of metal such as brass or plastic, and it is preferable that the material has the same hardness as the wire or slightly lower than that of the wire because it will not put a burden on the wire. Further, it is essential that the length of the hollow wire is such that the upper end of the hollow wire protrudes above the wire attachment device above the nipple;
Although it differs slightly depending on the relationship with the mounting device, the dimension where the nipple protrudes above the hole of the mounting device is 5 to 20 mm.
It is preferable to keep it to a certain extent. If the end of the hollow wire exists inside the attachment device, the nipple effect cannot be achieved, and if it is too long, the hollow wire will dig into the bottom of the semi-plastic body, which is undesirable.

In addition, pressure is applied to the nipple to prevent the wire from falling off the nipple.
The pressing force should be determined so that the hollow wire rod and the wire rod for cutting semi-plastic materials are brought into complete contact. Furthermore, in addition to these pressurizations, it is also effective to press the end of the wire 3 in advance to make it flat.

[Effect]

As mentioned above, the gripping structure according to the present invention uses a hollow wire rod longer than the length of the hole in the nipple between the wire rod for cutting the semi-plastic body and the nipple.
The wire rod subjected to tensile force can be prevented from receiving local bending stress at the hole portion of the attachment member, and the life of the wire rod 3 can be significantly extended.

〔Example〕

An embodiment of the gripping structure according to the present invention shown in the drawings will be specifically described.

FIG. 1 shows a wire end gripping structure for cutting a semi-plastic material, and FIG. 2 shows a perspective view of the structure shown in FIG. 1.

The nipple 7 is an iron sphere with a diameter of 10 mm, and a hole 8 of 0.8 mm is bored in the center. This hole 8
hole 1 with a length of 20 mm and a diameter of 0.6 mm in the center.
A hollow cylindrical copper wire 10 with holes 1 and 1 is inserted therethrough. Furthermore, the hole 11 of the hollow wire 10 has a diameter
A 0.5 mm piano wire 3 is inserted, and the end of the wire 3 protruding from the hole 8 of the nipple 7 is flattened to prevent the wire 3 from falling out of the nipple 7. Finally, the nipple 7 and Hollow wire rod 10
By pressing from the horizontal direction, the wire rod 3, the hollow wire rod 10, and the nipple 7 are completely brought into close contact and connected.

The end of the wire rod 3 gripped in this way is
As shown in the figure, the upper end of the hollow wire 10 is connected to the mounting device 5.
It was housed in the mounting device 5 so that it protruded outside the hole 6.

As shown in FIG. 3A, by moving the device 5 and the upper wire rod attachment device 18 to the right, the semi-plastic body 9, which was an ALC mortar block with a height of 600 mm, was cut with the wire rod 3.

The cutting length W of the semi-plastic body 9 by the wire rod 3 shown in FIG.

The end gripping structure according to the present invention has an average of 620
It became possible to cut m.

[Comparative example]

For comparison, the fourth method introduced as the conventional technology
The cuttable distance was measured using the end grip structures shown in FIGS. 6 and 7 in the same manner as in the example.

In the case of Fig. 4, the wire rod 3 was broken after cutting only 65 m on average, and in the cases of Fig. 6 and Fig. 7, the wire rod 3 was broken at an average of 150 m.

For reference, the winding drum method shown in FIG. 10, the end gripping method using the spring 14 shown in FIG. 9, and the methods shown in FIG. 3A and FIG. When the cuttable distance was measured under the same conditions as in the example, the wire 3 broke at an average distance of 300 m.

[Effect of the invention] The wire rod end gripping structure for cutting semi-plastic bodies according to the present invention has the above-described configuration, so that a wire rod with a small diameter can be used when cutting a semi-plastic body with the wire rod. Since no local bending stress is applied to the wire even when the wire is bent, breakage of the wire or breakage due to abrasion is significantly reduced, and its lifespan is greatly extended. You can get a large amount of body.

[Brief explanation of the drawing]

Figure 1 is a front view of the structure of the present invention, Figure 2 is a perspective view thereof, Figure 3 A is a diagram showing the state of cutting a semi-plastic body, Figure 3 B is a diagram showing the cutting distance, and Figure 4 is an explanatory diagram of a conventional cutting device, FIGS. 5, 6, and 7 are front views of a conventional end gripping structure, FIG. 8 is an explanatory diagram of another conventional cutting device, and FIGS. 10 is a detailed partial view of the apparatus of FIG. 8; DESCRIPTION OF SYMBOLS 1... Hole of cylindrical nipple, 2... Cylindrical nipple, 3... Wire rod, 4... Flat end of wire rod, 5...
...Mounting device, 6...hole, 7...spherical nipple,
8... Hole of spherical nipple, 9... Semi-plastic body,
10...Hollow wire rod, 11...Hole of hollow wire rod, 12
... winding drum, 13 ... cylindrical storage body, 14 ... spring,
15... Frame, 16... Rail, 17... Guide roller, 18... Upper wire attachment device, 19... Cylindrical nipple.

Claims (1)

[Scope of utility model registration request] In a structure for holding the end of a wire for cutting a semi-plastic body, in which a wire for cutting a semi-plastic body is inserted into a hole of a spherical nipple, and the nipple and the wire are brought into close contact with each other by pressure, A semi-plastic cutting characterized in that a hollow wire exists between the two so that the upper end of the hollow wire protrudes upward from a wire attachment device at the upper part of the nipple, and the hollow wire is closely attached to the nipple and the wire. End gripping structure for wire rods.