JPS59118414A - Method of cutting extruded shape by electroendosmosis - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Misfire 1 relates to a method for cutting an extruded body by electroosmosis, in which a clay having plasticity is extruded, and the entire extruded body obtained by the extrusion is cut by causing an electroosmosis phenomenon. It is.

In the conventional wet tile manufacturing method, as shown in FIG. A piano wire 3 for cutting is cut into the extrusion molded body 2, and the extrusion molded body 2'lf is cut into a predetermined size to obtain a tile blank 4.

However, the cutting in this case simply involves cutting the cut piece of piano wire 3 into the extrusion molded body 2, so the contact resistance (cutting resistance) with the extrusion molded body 2 at that time is large, and the piano wire 3 The piano wire 3 was frequently broken due to severe wear.Therefore, it was necessary to replace it after a short period of time.

Conventionally, the piano wire 3 has been replaced every day, which requires a lot of time and effort, and also has the disadvantage of increasing the amount of piano wire 3 used and increasing the cost. As mentioned above, when the cutting resistance of the piano wire 3 is large, there is a drawback that the cutting edges 5 occur in several parts of the extruded body 2 along the cutting direction. For this reason, it is necessary to remove this cutting edge 5 in a subsequent process, which causes an increase in the number of stripping processes. Moreover, the shape of the tile after removing the cutting paris 5 deteriorates.
The quality of the tiles as a product deteriorated.

In view of the above-mentioned drawbacks of the conventional extrusion molding cutting method, the present invention is intended to improve and eliminate the drawbacks. In the wet tile manufacturing method in which a tile green material is obtained by cutting the extrusion molded product in item 111, an anode voltage is applied to the extrusion molded product, and a cathode voltage is applied to the conductive metal wire of the cutter. It is an object of the present invention to provide a cutting method for cutting an extrusion molded body by causing an air permeation phenomenon between the conductive metal wire and the clay of the extrusion molded body by biting the metal wire + i+1 into the extrusion housing body. and
Is this the cutting resistance that is applied to the conductive metal wire during cutting?
The method of reducing the risk of cutting to less than 0, which aims to extend the life of the metal wire and completely eliminate the occurrence of cut chips, is explained as follows based on an example shown in the drawings. be.

In FIG. 2, 6 is a mold of an extrusion molding machine for extrusion molding clay having plasticity, and 7 is a conductive material that receives 8 extruded molded bodies. It is a board. Trigrams 9 and 10 are conductive metal wires for cutting the extrusion molded body 8 described in - into predetermined dimensions, and piano wire is used. In the case of this embodiment, the conductive metal wire 9 is stretched between the open ends of a U-shaped movable frame 11, and the movable frame 11 is rotated in accordance with the extrusion speed of the extrusion molded product 8. While moving in the extrusion direction, it moves in the width direction of the extruded body 8 and bites into it (cutting operation), cutting the eight extruded bi-shaped bodies to a predetermined length l. Also, the 4-density metal wire 10 is placed between the upper and lower frames of the fixed frame 12! The extruded body 8 cut into a predetermined length L using the metal wire 9 is cut into a predetermined width W1 to obtain a tile base 13.

On the other hand, the cutting method of the present invention is carried out by applying an anodic voltage to the extruded body 8 and applying a cathode voltage to the conductive metal wires 9 and 10 to cause a bidirectional V7c electroosmotic phenomenon. .

Next, a method for cutting the extrusion molded body 8 using electroosmotic phenomenon will be explained based on a specific example. I do it. In this case, the moisture content of the clay having plasticity is 22-23%, and the cutting speed is 3c.
The width W of the extrusion molded body 8 was 47 tnm, and the conductive wires 9 and 10 were ordinary piano wires of O65 diameter. When cutting is performed by applying the anode side voltage to the extrusion molded body 8 through the metal plate 7 and the cathode side voltage to the conductive metal wires 9 and 10 as described above, the moisture in the extrusion molded body 8 is removed. As the charge moves, the field i1]IK concentrates on the conductive metal wires 9 and 10 on the cathode side. A film is formed.For this reason, the cutting resistance of the metal wires 9 and 10 becomes extremely small, and the wear rate of the metal wires 9 and 10 is reduced.Therefore, in the cutting method in this example, the cutting resistance of the metal wires 9 and 10 is reduced. As shown in f, it is possible to reduce the contact resistance by as much as 24% by simply applying a voltage of +2V to the extruded body 8, and it is possible to extend the paternity period of the metal wires 9 and 10 to about one month. In addition, the numbers within 0 in Figure 3 indicate the ratio of the cutting resistance when the anode side voltage is sequentially applied, assuming that the cutting resistance is 100 when the anode side voltage is 0. Also, due to the formation of the water film, the cutting action of the conductive metal wires 9 and 10 becomes smooth, and no burrs are generated unlike in the conventional cutting process. 7) UJ's ability is to significantly increase the same as compared to the conventional case.

By the way, in the above embodiment, when applying the full positive voltage to the extrusion molded body 8, it is discussed that it is applied through the conductive receiving material, that is, the metal plate 7, but the positive voltage is applied to the mold 6. Even if you do something like that, ■'' is Noh.

The type and thickness of the material of the primary conductive metal wires 9 and 10,
It is sufficient that the wire does not break easily and in a short period of time when 8 extruded bodies are cut, and that the extruded body 8 is not deformed during cutting. A piano wire with a diameter of approximately 2 mm or less is suitable for this.

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. The resistance is extremely small.As a result, there is less wear on the conductive metal wire, making it possible to extend its lifespan.
It is possible to extend this period. In addition, the cutting speed can be increased to improve work efficiency. In the zero history, which can be improved, the formation of the above-mentioned water film results in smooth cutting, and there is no occurrence of cutting burrs as in the conventional case. This method has many advantages, such as eliminating the need to remove cut chips and improving the appearance of the finished tile.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a mold and an extrusion molded body for explaining a conventional method for cutting an extrusion molded product, and Fig. 2 is a perspective view of a mold for using the cutting method for an extrusion molded product according to the present invention. 3 is a perspective view of an extrusion molded body, and FIG. 3 is a drawing showing the relationship with ti resistance. 8... Extrusion molded body 13... Tile raw material 9.10
... Conductive Metal Wire Special A Participation Participating in Ina Kyoto Co., Ltd. Agent 9F Riju Uchida Toshishi Figure 1 Figure 3

Claims (1)

[Claims] (2) In the 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 a predetermined size, an anode side voltage is applied to the extrusion molded body described in 11j. At the same time, a cathode voltage is applied to the conductive metal wire for cutting, and the conductive metal wire is
By cutting into the extruded molded body described in +iJ, an electroosmosis phenomenon occurs between the conductive metal wire and the clay of the extruded molded body, and -CmJ is cut into the extruded molded body? Features of extrusion by electroosmosis; cutting method for molded bodies 0