JP2006035665A - Extrusion molding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extrusion molding machine constituted so as to subject a raw material comprising an inorganic kneading material, for example, a raw material based on clay to extrusion molding to continuously form an extrusion molded product having an embossed pattern formed on its decorative surface without causing strain. <P>SOLUTION: In the extrusion molding machine P constituted so as to extrude the raw material 2a comprising the inorganic kneading material from an extrusion molding part A to form the embossed pattern α1 on the extrusion molded product α subjected to extrusion molding by a decorative surface processing part F, a die 3 is connected to an extruder 2 and the sheetlike continuous molded product α extruded from the die 3 is processed by the first embossing roll part E integrally arranged to the outlet of the die 3. Thereafter, the processed continuous molded product α is processed by a second embossing roll part G composed of a plurality of roll parts 10 different in rotational speed to form the embossed pattern γ on the decorative surface α1 of the extrusion molded product α. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to an extrusion molding apparatus for continuously forming an extrusion-molded body formed by extruding a raw material made of an inorganic kneading material, for example, a raw material mainly composed of clay, and having an uneven pattern on a decorative surface without distortion. .

  In order to produce ceramic plates using clay, such as Kibushi clay, Sasame clay, Shigaraki clay, etc., it is produced by extruding a continuous preform with an extrusion molding device and then forming an uneven pattern on the decorative surface. It was. (For example, see Patent Documents 1 to 3).

JP-A-55-093410 JP 56-159139 A JP 59-143603 A

  According to Patent Literatures 1 to 3, a roll for forming a concavo-convex pattern is formed on the die part for molding, and the concavo-convex pattern is formed without deformation in appearance even if the decorative surface is pressed with a large pressure in order to form the concavo-convex pattern. Can be formed. However, when an embossed pattern is formed on the entire surface, a large pressure causes distortion in the molded body, and in the subsequent drying process, cutting process, firing process, cooling process, etc. The adverse effects such as warpage, cracking of the extruded product, deformation of the extruded product, etc. occurred, and it was very difficult to control the pressing force for forming the uneven pattern.

  In order to solve such drawbacks, the present invention provides an extrusion apparatus for extruding a raw material made of an inorganic kneaded material by an extrusion molding unit, and forming a concavo-convex pattern on the extruded molded body by a decorative surface processing unit. A plate-like continuous molded body that is extruded from the die while the die is connected to the machine is processed by a first embossing roll portion that is integrally installed at the die outlet, and then a second portion that comprises a plurality of roll portions having different rotational speeds. The present invention provides an extrusion molding apparatus which is processed by an embossing roll part and has a concavo-convex pattern formed on the decorative surface of the extrusion molded body.

  According to the roofing material according to the present invention, (1) since the internal distortion at the first embossing roll part can be removed by the second embossing roll part, the warp of the extrusion molded body, the crack of the extrusion molded body, the extrusion molded body No deformation, etc. occur. (2) No warpage of the extrusion molded product, cracking of the extrusion molded product, deformation of the extrusion molded product, or the like occurs in subsequent processes such as a drying process, a cutting process, a firing process, and a cooling process after the extrusion molding apparatus. (3) An infinite uneven pattern can be formed by a combination of the first embossing roll part and the second embossing roll part. (4) The pattern of the pattern can be made difficult to understand, and a textured surface with a natural texture can be formed. There are features and effects.

  Hereinafter, an embodiment of an extrusion molding apparatus according to the present invention will be described in detail with reference to the drawings. FIGS. 1A and 1B are explanatory views showing a typical example of the extrusion molding apparatus P, which includes an extrusion molding portion A and a decorative surface processing portion F. FIG. The extrusion-molded product α in which the concave and convex pattern γ is formed on the decorative surface α1 is continuously extruded.

  In FIG. 1A, reference numeral 1 denotes an extruding part, and 2 an extruder, which extrudes a raw material 2 a and forms an extruded product α by a die 3.

  As an example of the raw material 2a, a clay material, a cement material, or the like obtained by crushing porcelain stone, feldspar, kaolinite, halloysite, metahalloysite, kibushi clay, glazed clay, Shigaraki clay, etc. and adding water to knead.

  The extrusion molding part A comprises a raw material supply part B, an extrusion molding machine C, a base part D, and a first embossing roll part E.

  The 1st embossing roll part E consists of the decorative surface processing apparatus 4 which consists of the embossing roll 6 in which the uneven | corrugated processed part 6a was formed, and the receiving part 5, and is integrally formed in the nozzle | cap | die 3.

  The embossing roll 6 rotates in the direction of the arrow in synchronization with the extrusion speed of the extrusion-molded body α, thereby forming a concavo-convex pattern γ on the decorative surface α1 of the extrusion-molded body α immediately after being extruded.

  The receiving portion 5 is in a state of supporting the extrusion molded body α when the concavo-convex pattern γ is formed on the extruded molded body α by the embossing roll 6, and the cross-sectional shape of the extruded molded body α is not deformed. Of course, the receiving part 5 preferably has the same shape as the lower mold of the base 3.

  The decorative surface processing portion F is composed of a second embossing roll portion G and a gantry H.

  The second embossed roll part G is formed by a gantry 7, a plurality of roll parts 10 composed of a roll 8 and an embossed roll 9, a vertical movement part 11, and a concavo-convex part 12.

  In further explanation, as shown in detail in FIG. 3 (side view) and FIG. 4 (front view), the second embossing roll portion G is installed so as to sandwich the extruded product α from above and below. A roll portion 10 is formed by a plurality of rolls 8 and a plurality of embossing rolls 9 that are fixed on a base 7 and are driven by a driving device such as a motor (not shown).

  Further, the pressing force of the second embossing roll part G to the extrusion molded body α varies depending on various conditions such as the shape, material, extrusion speed and the like of the extruded molded body α, and is not particularly limited.

  Of course, the portion of the second embossing roll part G that is in contact with the extruded product α is the same as the cross-sectional shape of the extruded product α. Moreover, when processing the extrusion molded object (alpha) as shown to Fig.7 (a)-(d), the roll 8 is by the some divided | segmented roll 8 in the cross-sectional shape of the back surface of the extrusion molded object (alpha), The back surface of the extrusion-molded product α is supported to form a concavo-convex pattern γ.

  As shown in the figure, the embossing roll 9 is formed from a plurality (five steps in the figure) of embossing rolls 9a to 9e, and the rotational speed of the embossing rolls 9a to 9e (indicating strength by arrows) is changed to 9a, In 9b, the extruded product α is slipped in the direction opposite to the traveling direction, and in 9d and 9e, the extruded product α is formed so as to slip in the same direction as the traveling direction, thereby forming an unnatural natural texture pattern. It is.

Furthermore, the 2nd embossing roll part G is made into the some embossing roll 9a-9e,
(1) Change the concavo-convex portion 12 (pattern) of each of the emboss rolls 9a to 9e.
(2) Depth / design / formation range, etc., of each concavo-convex portion 12 (pattern) of the embossing rolls 9a to 9e is changed for each embossing roll 9a to 9e.
(3) The diameter of each of the embossing rolls 9a to 9e is changed.
(4) Change the depth of the uneven portion 12 (pattern) of each of the embossing rolls 9a to 9e.
(5) The rotational speed of the embossing rolls 9a to 9e is synchronized with the speed of the extruded product α.
(6) The rotational speed of the embossing rolls 9a to 9e is not synchronized with the speed of the extruded product α.
(7) The rotational speed of the embossing rolls 9a to 9e is changed.
(8) The embossing rolls 9a to 9e are not driven. (Left to move the extruded product α)
(9) A combination of (1) to (8).
and,
(10) A combination of (1) to (9) and the first emboss roll E.
In this way, an uneven surface γ (pattern) that has never been obtained without causing adverse effects such as warpage of the extruded product α, cracks in the extruded product α, and deformation of the extruded product α. Can be formed. Furthermore, it is possible to make the pattern of the uneven surface γ (pattern) difficult to understand, and to form the uneven surface γ having a natural texture.

  In addition, although the 2nd embossing roll part G is 5 steps | paragraphs of the embossing rolls 9a-9e in the figure, it should just be a multi-stage | paragraph together with the 1st embossing roll part E at least.

Of course, if the number of steps of the embossing roll 9 in the second embossing roll part G is larger (multi-step formation), it is possible to suppress the embossing from being applied to the extruded product α. Generation of adverse effects such as deformation of the body α is further suppressed.

  5 (a) to 5 (g) to 7 (a) to 7 (d) are cross-sectional views showing examples of the extruded product α.

  FIG. 8 also shows a post-process of the extrusion molding apparatus P. In the post-process of the extrusion molding apparatus P, a drying unit I, a cutting unit J, a transfer unit K, a firing unit L, and the like are installed, and the extrusion molded product α The ceramic board manufacturing process which manufactures is shown. Of course, depending on the raw material 2a, the post-process of the extrusion molding apparatus P may be a ceramic board production process of a cutting part-autoclave curing process.

  In the figure, the upper side is shown as the decorative surface α1, but the lower side can be used as the decorative surface α1, and the upper and lower surfaces can be processed by the extrusion apparatus P as the decorative surface α1.

  According to the extrusion molding apparatus according to the present invention, the extrusion molded body α free from warpage, cracking, deformation, etc. can be produced with a high yield, which can contribute to cost reduction and energy saving.

It is explanatory drawing which shows the representative example of the extrusion molding apparatus which concerns on this invention. It is explanatory drawing which shows the representative example of the extrusion molding apparatus which concerns on this invention. It is explanatory drawing which shows the representative example of the extrusion molding apparatus which concerns on this invention. It is explanatory drawing which shows the representative example of the extrusion molding apparatus which concerns on this invention. It is sectional drawing which shows the example of the extrusion molded object shape | molded by the extrusion molding apparatus. It is sectional drawing which shows the example of the extrusion molded object shape | molded by the extrusion molding apparatus. It is sectional drawing which shows the example of the extrusion molded object shape | molded by the extrusion molding apparatus. It is explanatory drawing which shows the structure of the whole ceramic board manufacturing line using the extrusion molding apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS P Extrusion molding apparatus A Extrusion molding part B Raw material supply machine C Extrusion molding machine D Base part E 1st embossing roll part F Cosmetic surface processing apparatus G 2nd embossing roll part H Mounting frame I Drying part J Cutting part K Transfer machine L Firing part α Extrusion product α1 Decorative surface β Concavity and convexity processing surface γ Concavity and convexity pattern 1 Extrusion part 2 Extruder 2a Raw material 3 Die 4 Cosmetic surface processing device 5 Receiving part 6 Embossing roll 6a Concavity and convexity processing part 7 Mounting base 8 Roll 9 Embossing roll 9a Embossing roll 9b Embossing roll 9c Embossing roll 9d Embossing roll 9e Embossing roll 10 Roll part 11 Vertical movement part 12 Concavity and convexity processing part

Claims (1)

In an extrusion molding apparatus in which a raw material made of an inorganic kneading material is extruded by an extrusion molding section and a concavo-convex pattern is formed by a decorative surface processing section on an extruded molded body, a die is connected to the extruder and extruded from the die. A plate-like continuous molded body is processed by a first embossing roll portion integrally installed at the die outlet, and then processed by a second embossing roll portion composed of a plurality of roll portions having different rotational speeds, and the decorative body of the extruded molded body An extrusion apparatus characterized by forming a concavo-convex pattern on a surface.

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