JPH05138631A - Extrusion molding machine - Google Patents

Abstract

PURPOSE:To form a molded body having patterns due to the semi-kneading of two raw materials by connecting a second extruder to the vacuum chamber of a vacuum extruder when a clayey material is molded into a plate shape by extrusion molding and providing a shutter part becoming a lid and an edge to the extrusion port of the second extruder. CONSTITUTION:In a vacuum extruder 1, a raw material B is kneaded in a first screw part 3 to be degassed and reduced in moisture in a vacuum chamber 4 and re-kneaded in a second screw part 5 to be extruded. In a second extruder 7, the leading end of a screw is connected to the vacuum chamber 4 and a shutter part 11 equipped with a lid and edge 12 is provided to an extrusion port 10. The raw material C extruded from the second extruder 7 is formed into a definite amount of a lumpy shape by the rotation and vertical movement of the lid and edge 12 and the lumps of the raw material C can be charged in the vacuum chamber 4 at every definite time. The raw material C charged in the vacuum chamber 4 to be degassed and adjusted in moisture is brought to a semi-kneaded state along with the raw material B by the second screw part 5. A molded body excellent in design effect is formed by mechanical patterning due to semi-kneading and the charging interval of the raw material C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extrusion molding apparatus for continuously extruding a porcelain plate used as an interior material, a floor material, an exterior material or the like using a clay material as a main raw material.

[0002]

2. Description of the Related Art Conventional ceramic building materials include cement building materials, roof tiles, tiles, etc., and in the case of long products, most of them are extruded.

[0003]

However, in the case of ordinary extrusion molding, several raw materials are put into the extrusion molding apparatus through the raw material feeding port, and these are extruded while being kneaded by the screw, so that the material is almost uniform. The extruded product itself is monotonous and has the disadvantage of lacking design. For this reason, there is a disadvantage that only a monotonous texture can be produced unless the surface is made up with paint or glaze.

[0004]

In order to eliminate such disadvantages, the present invention uses at least two extruders as an extrusion molding device, and uses a first screw portion and a second extruder as a main first extruder. A vacuum extruder having a vacuum chamber between screw parts is used, a second extruder is connected to the vacuum chamber of the first extruder, and a shutter part composed of a wiper-shaped blade is provided at the extrusion port of the second extruder. When the material is provided and extrusion molding is performed by the first extruder, a semi-kneaded pattern is formed from the two materials by extruding from the second extruder and adding different materials in a constant amount by the shutter section in the vacuum chamber. The present invention proposes an extrusion-molding apparatus capable of forming an extrusion-molded product having excellent texture by making it possible to form the extrusion-molded product.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The extrusion molding apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory view showing a typical embodiment of the extrusion molding machine. In the figure, A is an extrusion molding apparatus, which is composed of a first extruder 1 and a second extruder 7.

That is, the first extruder 1 has a raw material charging port 2 for charging the raw material B into the extrusion molding apparatus A, and a first screw section 3 for kneading the raw material B charged from the raw material charging port 2.
A vacuum chamber 4 for removing air and reducing water of the raw material B kneaded by the first screw part 3, and a raw material B passing through the vacuum chamber 4.
Are kneaded again, and the spinneret 6 is used, for example, as shown in FIG. 2 and FIG.
It is a vacuum extrusion molding machine configured with a second screw portion 5 that performs extrusion molding in a predetermined shape as shown in (a) to (g). The raw material B is, for example, clay material obtained by crushing pottery stone, feldspar, kaolinite, halloysite, metahalloysite, chamotte, kibushi clay, frog eye clay, Shigaraki clay, etc. and kneading them with water, or asbestos, It is a clay-based material in which mineral fibers such as rock wool, carbon fibers, steel fibers, and aggregates such as beads are mixed, and the extrusion molded body P is obtained by drying and firing after extrusion molding. This is the raw material C supplied from the second extruder 7 as described later.
As shown in FIG. 2, it is extruded in a semi-kneaded state by the second screw section 5, and the raw materials B and C are partially melted by firing, and the pattern becomes natural, and the pattern is extruded P. Make it look like a solid stone,
In addition, this is also to prevent deterioration in designability due to wear.

The second extruder 7 comprises a raw material inlet 8 for introducing a raw material C having a color at least different from that of the raw material B for the first extruder 1, and a screw portion 9 for kneading the raw material C. The tip of the part 9 is connected to the vacuum chamber 4 of the first extruder 1. The raw material C is the raw material B,
For example, the raw material B is changed by the second extruder 7, or the raw material B is mixed with an inorganic pigment, or the raw material B is mixed with a pigment having a color different from that of the raw material B. 1 to 1 parts of raw material C
It is added in an amount of 100 parts by weight and becomes a pattern of an extrusion molded body P molded by the extrusion molding apparatus A. To further explain, the second extruder 7 is for adding the raw material C to the vacuum chamber 4 of the first extruder 1. Therefore, the raw material C kneaded by the second extruder 7 is the raw material in the vacuum chamber 4. The air is removed and the water content is adjusted together with B, and the raw material B is kneaded by the second screw portion 5 of the first extruder 1 and extruded from the die 6. In other words, the raw materials B and C are kneaded only by the second screw portion 5 and are extruded in a semi-kneaded state, but since the raw material C is put into the vacuum chamber 4, the raw material B is , C does not include air, and the adhesion between the raw materials B and C is high, so that the extrusion molded body P can be prevented from being broken. In addition, such an extruded body P has a pattern in which the raw material C is randomly mixed with the raw material B along the extrusion direction as shown in FIG. It will be improved. The extrusion speed of the second extruder 7 is determined by the raw material C added to the raw material B of the first extruder 1. For this reason,
The raw materials B and C are kneaded and extruded at a substantially constant ratio.

Further, the second extruder 7 is provided with a shutter portion 11 at an extrusion outlet 10 connected to the vacuum chamber 4 of the first extruder 1. As shown in FIGS. 4 (a) and 4 (b), this shutter portion 11 has a rotary-type semi-circular lid / cutting tool 12,
The lid / cutler 12 rotates, reciprocally rotates, or reciprocates up and down as shown in FIG.
The raw material C extruded from the extrusion outlet 10 of the extruder 7 can be put into the vacuum chamber 4 in a certain amount in a lump form, and the lid / cutting tool 12 closes the extrusion outlet 10 so that the raw material C can be put in at regular intervals. it can. Therefore, the extruded product P has a mechanical pattern in which the raw materials B and C are extruded in a semi-kneading state by the second screw portion 5 of the first extruder 1 and a pattern is thinned due to the feeding interval of the raw material C. The extruded product P has improved design.

The above description is merely one example of the extrusion molding apparatus A according to the present invention. As shown in FIG. 6, a plurality of second extruders 7 are provided in the vacuum chamber 4 of the first extruder 1. It can also be connected. Although not shown, the second extruder 7 can also be a vacuum extruder.

[0010]

As described above, according to the extrusion molding apparatus of the present invention, it is not a monotonous extrusion molded body as in the prior art,
Mechanical mixing of the two kinds of raw materials along the longitudinal direction and random pattern or pattern strength are generated, and an extruded product excellent in designability and solid feeling can be manufactured. In addition, the mixing ratio of the raw materials can be adjusted by the extrusion speed of the first extruder and the second extruder, and the opening and closing of the shutter part. Further, since the extruded product molded according to the present invention has a pattern added to the base material itself, it is possible to prevent deterioration in designability due to abrasion. Further, since the second extruder is connected to the vacuum chamber of the first extruder, the adhesion between the raw materials is high and the strength of the extruded product is not impaired even in the semi-kneaded form. There are effects and features.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a typical embodiment of an extrusion molding apparatus according to the present invention.

FIG. 2 is an explanatory view showing an example of an extruded body formed by the extruding apparatus according to the present invention.

FIG. 3 is an explanatory view showing another example of an extrusion molded body molded by the extrusion molding device according to the present invention.

FIG. 4 is an explanatory view showing a shutter portion of the extrusion molding apparatus according to the present invention.

FIG. 5 is an explanatory view showing a shutter portion of the extrusion molding apparatus according to the present invention.

FIG. 6 is an explanatory diagram showing another embodiment.

[Explanation of symbols]

 A Extrusion molding apparatus B Raw material C Raw material 1 First extruder 3 First screw part 4 Vacuum chamber 7 Second extruder 10 Extrusion outlet 11 Shutter part

Claims (1)

[Claims] 1. In an extrusion molding apparatus for extruding a clayey material into a plate shape, a main first extruder is a vacuum extrusion molding machine having a vacuum chamber, and a second extrusion is performed in the vacuum chamber of the first extruder. An extrusion molding apparatus, characterized in that a shutter portion that is a lid and a blade is provided at the extrusion outlet of the second extruder in the vacuum chamber of the first extruder while connecting the machines.