JPS6033650B2 - Method for cutting extruded bodies by electroosmosis - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cutting an extrusion molded body by electroosmosis, which involves extruding potting clay having plasticity and cutting the extrusion molded body obtained by the extrusion 1 by causing an electroosmosis phenomenon. It is.

In the conventional wet tile manufacturing method, as shown in FIG. A cutting piano wire 3 is inserted into the extrusion molded body 2 to cut the extrusion molded body 2 into a predetermined size to obtain a tile raw material 4.

However, since the cutting in this case simply involves cutting the cutting piano wire 3 into the extrusion molded body 2, the contact resistance (cutting resistance) with the extrusion molded body 2 at that time is large, and the piano wire 3 The wear had become severe and piano wire 3 was on the verge of breaking. Therefore, it was necessary to replace it within a short period of time. Conventionally, the piano wire 3 has to be replaced every day, which has the disadvantage of requiring a great deal of time and effort, as well as increasing the amount of piano wire 3 used and increasing costs. Further, as described above, when the cutting resistance of the piano wire 3 is large, there is a drawback that cutting burrs 5 are generated on the side surface of the extruded body 2 along the cutting direction. Therefore, it is necessary to remove the cutting burr 5 in a subsequent process, which causes an increase in the number of work steps. Furthermore, the shape of the tile after the cutting burrs 5 were removed deteriorated, resulting in a decrease in the quality of the tile as a product. The present invention improves and eliminates the above-mentioned drawbacks of the conventional extrusion molding cutting method, and involves extruding a plastic cup and cutting the extrusion molded product obtained by the extrusion into predetermined dimensions. In the wet tile manufacturing method, a voltage on the anode side is applied to the extruded body and a voltage on the cathode side is applied to the conductive metal wire for cutting, and the conductive metal wire is The present invention aims to provide a cutting method for cutting the extruded body by causing an electroosmotic phenomenon between the conductive metal wire and the cup of the extruded body by biting into the extruded body, and thereby cutting the extruded body. The purpose of this invention is to reduce the cutting resistance applied to the conductive metal wire, extend the life of the metal wire, and eliminate the occurrence of cutting burrs.

The method of the present invention will be explained below based on the embodiments shown in the drawings. In FIG. 2, 6 is a mold of an extrusion molding machine for extruding a plastic cup, and 7 is a conductive material, such as a metal plate, that receives the extruded body 8. .

9 and 10 are conductive metal wires for cutting the extruded body 8 into predetermined dimensions, and piano wires are used.

In this embodiment, the conductive metal wire 9 is stretched between the open ends of a U-shaped moving frame 11, and the moving frame 11 moves in the extrusion direction in synchronization with the extrusion speed of the extrusion molded body 8. At the same time, it moves in the width direction of the extrusion molded body 8 and bites into it (cutting operation), cutting the extrusion molded body 8 into a predetermined length dimension 1. Further, a conductive metal wire 10' is stretched between the upper and lower frames of the fixed frame 12, and the extrusion molded body 8 cut into a predetermined length dimension 1 by the metal wire 9 is cut into a predetermined width dimension w. Then, a tile raw material 13 is obtained. The cutting method of the present invention is carried out by applying an anodic voltage to the extruded body 8 and applying a cathodic voltage to the conductive metal wires 9 and 10 to cause an electroosmotic phenomenon between them. .

Next, a method for cutting the extruded body 8 using electroosmotic phenomenon will be explained based on a specific example.

In this case, the water content of the plastic cup is 22-23%.
, the cutting speed is 3 arc/mjn, and the width w of the extruded body 8 is 47
The conductive metal wires 9 and 10 are ordinary piano wires of 0.5 willow thickness. As described above, when cutting is performed by applying an anode side voltage to the extrusion molded body 8 through the metal plate 7 and a cathode side voltage to the conductive metal wire 9, the moisture in the extrusion molded body 8 is removed. As the charges move, they concentrate at the interface with the conductive metal wires 9 and 10 on the cathode side. That is, a water film is formed around the contact surfaces of the conductive metal wires 9 and 10 with the extruded body 8. Therefore, the metal wires 9 and 10
The cutting resistance becomes very small, and the wear rate of the metal wires 9 and 10 is reduced. Therefore, in the cutting method of this embodiment, as shown in FIG.
It was possible to reduce the contact resistance by as much as 24% by simply applying a voltage of 1, and it became possible to extend the replacement period for metal wires 9 and 10 to approximately one month. In addition, the numbers in parentheses in FIG. 3 indicate the ratio of the cutting resistance when the anode side voltage is applied sequentially, with the cutting resistance when the anode side voltage is OV being 100. Further, due to the formation of the water film, the cutting action of the conductive metal wires 9 and 10 becomes smooth, and cutting burrs do not occur as in the case of secondary wires. Moreover, the cutting speed can be significantly improved compared to the conventional case. By the way, in the above embodiment, when applying the anode side voltage to the weighed compact 8,
Although this is done through the conductive receiving material, ie, the metal plate 7, it is also possible to apply an anodic voltage to the mold 6.

In addition, the type and thickness of the material of the conductive metal wires 9 and 10 are as follows:
It is sufficient that the wire does not break easily and in a short period of time when the extrusion molded body 8 is cut, and that it does not deform the extrusion molded body 8 during cutting. Is this about the 2nd side if it is a piano wire? The following are suitable. As explained above, according to the present invention, the extrusion molded product can be cut by forming a water film around the conductive metal wire in the portion that comes into contact with the extrusion molded product, so that the conductive metal wire can be cut. resistance becomes very small.

As a result, the wear of the conductive metal wire is reduced, making it possible to extend its life and extend its replacement period.
It is also possible to increase cutting speed and improve work efficiency. Furthermore, the formation of the water film results in smooth cutting, and no cutting burrs occur as in the conventional case. Therefore, there are many advantages, such as eliminating the need to remove cutting burrs and giving the finished tile a good-looking shape.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a mold and an extrusion molded body for explaining a conventional cutting method for an extrusion molded body, and FIG. 2 is a perspective view of a mold and an extrusion molded body for explaining a cutting method for an extrusion molded body according to the present invention. FIG. 3, a perspective view of the molded body, is a diagram showing the relationship between the applied voltage of the extrusion molded body and the cutting resistance of the conductive metal wire according to the cutting method of the present invention. 8... Extrusion molded body, 13... Tile raw material, 9
, 10... Conductive metal wire. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A wet tile manufacturing method in which a tile base is obtained by extruding a clay having plasticity and cutting the extrusion molded body obtained by the extrusion into predetermined dimensions, in which a voltage on the anode side is applied to the extrusion molded body. At the same time, by applying a cathode voltage to the conductive metal wire for cutting and causing the conductive metal wire to bite into the extrusion molded body, an electroosmosis phenomenon is caused between the conductive metal wire and the clay of the extrusion molded body. A method for cutting an extrusion molded body by electroosmosis, characterized in that the extrusion molded body is cut by cutting the extrusion molded body.