JP2003305709A - Apparatus for extrusion molding and method for extrusion molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for extrusion molding and a method for extrusion molding wherein when an extrusion molding material is extrusion- molded, there exists no possibility of impairing linearity and uniformity of the thickness of an extrusion-molded original sheet, generating a cut on the surface or back surface of the original sheet, and deterioration of formation of the surface and the back surface. <P>SOLUTION: A plurality of vibration means (6) which can be especially vibrated are uniformly or approximately uniformly arranged in parallel over the whole length in the width direction of at least the upper and lower inner faces (3) and (4) in the neighborhood of an extrusion hole (2) of a mold (1) for extrusion molding. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The invention of this application relates to an extrusion molding apparatus and an extrusion molding method. More specifically, the invention of this application, when extruding an extrusion molding material, impairs the linearity and thickness uniformity of the extruded original plate, causes scratches on the front surface and the back surface of the original plate, and the front surface and the back surface. The present invention relates to an extrusion molding apparatus and an extrusion molding method that do not cause deterioration of formation.

[0002]

2. Description of the Related Art Conventionally, an extrusion molding material such as a hydraulic composition is extruded by an extrusion molding device to form an outer wall material of a building such as a house, an exterior material such as a roof material, an inner wall material, a ceiling material, etc. When manufacturing an inorganic plate to be used as an interior material, for example, an extrusion molding material is extruded from an extrusion opening of an extrusion molding die that constitutes an extrusion molding device, and has a width of 0.45 m, a length of 3 m, and a thickness of 3 m. By forming a sheet-shaped original plate of about 15 to 70 mm and curing it by extrusion until curing, or by roll-forming at the same time as extrusion, or by press-forming after extrusion, the desired unevenness can be obtained. After patterning such as a pattern, it was cured and cured to produce an inorganic plate.

[0003]

However, when the extrusion molding material is extrusion molded from the extrusion opening of the extrusion molding die as described above, the extrusion molding die is rubbed by the friction between the inner surface of the extrusion molding die and the extrusion molding material. There is a difference (velocity distribution) in the extrusion speed of the extrusion molding material in the width direction of the extrusion port of the mold (usually, the center portion in the width direction of the extrusion port is fast, both sides are slow), Problems such as linearity being impaired, partial thickness differences causing uneven thickness uniformity, scratches on the front and back surfaces of the original plate, and poor texture on the front and back surfaces was there.

In order to solve such a problem, for example, a plate called a choke is provided in a part of the extrusion molding die, and the width of the flow path of the extrusion molding material is adjusted by moving the plate, or It may be possible to eliminate the difference in the extrusion speed of the extrusion molding material (velocity distribution) by providing vibrators on both sides of the extrusion molding die to increase the extrusion speed of the extrusion molding material on both sides. However, even if it is possible to eliminate the difference in extrusion speed (velocity distribution) of the plate or the part where the vibrator is provided, eliminate the difference in extrusion speed (velocity distribution) over the entire extrusion opening of the extrusion mold. Therefore, there is a problem that the above-mentioned problems cannot be completely solved.

The invention of this application has been made in view of the above circumstances, and solves the above problems and, when an extrusion molding material is extrusion-molded, the linearity and thickness of the extrusion-molded original plate. As a problem to be solved, it is desirable to provide an extrusion molding apparatus and an extrusion molding method that do not impair the uniformity of the original plate, cause scratches on the front surface or the back surface of the original plate, and do not deteriorate the formation of the front surface or the back surface. There is.

[0006]

The invention of this application was made in order to solve the above-mentioned problems. The first invention is at least the upper and lower inner surfaces in the vicinity of the extrusion opening of an extrusion molding die. The present invention provides an extrusion molding apparatus characterized in that a plurality of vibrating means that can vibrate separately are arranged side by side evenly or substantially evenly over the entire length in the width direction.

A second aspect of the present invention is the extrusion molding apparatus, wherein the vibrating means is a plate that vibrates ultrasonically, and a third aspect of the invention is a hollow molding core inside the extrusion molding die. According to the fourth aspect of the invention, the embossing roll is provided in the vicinity of the extrusion opening of the extrusion die, and the vibrating unit located on the embossing roll contact surface side is interlocked with the embossing roll. The extrusion molding apparatus according to any one of the above, which is capable of vibrating.

Further, according to a fifth aspect of the present invention, when the extrusion molding is performed by any one of the above-mentioned extrusion molding apparatuses, by vibrating the vibrating means located at a portion where the extrusion speed of the extrusion molding material is slow, the extrusion speed is made uniform or substantially. Provided is an extrusion molding method, which is characterized by uniform adjustment and extrusion molding.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The invention of this application has the characteristics as described above, and the embodiments thereof will be described below.

FIG. 1 illustrates an embodiment of the invention of this application. FIG. 1A is a cross-sectional view of a main part, and FIG. 1B is a perspective view of the main part.

As illustrated in FIGS. 1 (a) and 1 (b), the invention of this application is such that at least the upper inner surface (in the vicinity of the extrusion port (2) of the extrusion mold (1) constituting the extrusion molding apparatus ( 3) and a plurality of vibrating means (6) capable of individually vibrating over the entire width in the width direction of the lower inner surface (4) (upper and lower inner surfaces).
The present invention relates to an extrusion-molding apparatus, which is characterized in that they are arranged side by side at equal or substantially equal intervals.

In the invention of this application, when the vibrating means (6) is provided in parallel on the upper and lower inner surfaces in the vicinity of the extrusion opening (2) of the extrusion molding die (1), for example, the extrusion molding die ( 1) forming an upper mold (1a) and a lower mold (1a)
A vibrating means (6) capable of imparting microvibration by various mechanisms is vibratably attached to a part near the extrusion port (2) of b), and the vibrating surface of the vibrating means (6) is attached to the upper die ( 1a) and the lower inner surface (4) of the lower mold (1b) may be exposed and arranged side by side.

Further, as described above, the vibrating means (6) is juxtaposed over the entire width in the width direction of the upper inner surface (3) and the lower inner surface (4) in the vicinity of the extrusion port (2) of the extrusion molding die (1). In addition, as illustrated in FIGS. 1A and 1B, the left and right side molds (1
By attaching a vibrating means (6) to a portion near the extrusion port (2) of c) so that it can vibrate, and exposing the vibrating surface of the vibrating means (6) to the inner side surface (5) of the side die (1c), The vibrating means (6) may be provided in parallel on the side inner surface (5) near the extrusion opening (2) of the molding die (1).

As described above, in the invention of this application,
A plurality of vibrating means (6) capable of vibrating in particular are arranged in parallel or substantially evenly over at least the entire length in the width direction of the upper and lower inner surfaces in the vicinity of the extrusion port (2) of the extrusion molding die (1). Therefore, in FIGS. 1A and 1B, the extrusion molding material to be filled in the extrusion molding die (1) as shown by the arrow (A) is extruded as shown by the arrow (B). In doing so, as described above, the linearity and thickness uniformity of the original plate are impaired, scratched, and the texture is easily deteriorated. Adjusting the extrusion speed of the extrusion molding material in the width direction of the extrusion port (2) of the extrusion mold (1) by vibrating the desired vibrating means (6) on the upper and lower inner surfaces near the extrusion port (2). And extrusion speed It is possible to prevent the difference (velocity distribution) from occurring, and therefore, the linearity and thickness uniformity of the extruded original plate is impaired, the front and back surfaces of the original plate are scratched, and the background It is possible to prevent the extrusion molding material from adhering to the vicinity of the extrusion port (2) by vibrating the vibrating means (6) without the possibility of deterioration of the fit.

In addition to the above, in the invention of this application, as described above, the left and right inner surfaces (3) and the lower inner surface (4) in the vicinity of the extrusion port (2) of the extrusion molding die (1) are formed. When the vibrating means (6) is also provided in parallel on the inner side surface (5), the vibrating means (6) at a desired position can be vibrated over the entire inner peripheral surface of the extrusion port (2), so extrusion molding is possible. The extrusion speed of the extrusion molding material can be adjusted over the entire circumference of the extrusion port (2) of the mold (1) to accurately prevent a difference (velocity distribution) in the extrusion speed.

Further, in the invention of the above application, FIG.
As illustrated in (a) and (b), as the vibrating means (6), for example, an ultrasonic motor or the like has a frequency of 20 kHz to 20 kHz.
When a plate that vibrates ultrasonically at 0 MHz is used, the extrusion molding is smoothly performed without impairing the extrusion moldability of the extrusion molding material, and a difference (velocity distribution) occurs in the extrusion speed of the extrusion molding material. Can be prevented.

FIG. 2 illustrates a different embodiment of the invention of this application. (A) is a lateral cross-sectional view of a main part and (b) is a vertical cross-sectional view of the main part.

In FIG. 2, the same parts as those in the embodiment shown in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 2 (a) and 2 (b), the invention of this application is such that, in the invention shown in FIG. 1, the hollow portion is formed inside the extrusion molding die (1). The present invention relates to an extrusion molding device provided with a core (7) for hollow molding.

In the extrusion molding apparatus having the core (7) provided inside the extrusion molding die (1) as described above, as compared with the extrusion molding apparatus illustrated in FIG. 1, which does not have the core (7). Therefore, when extrusion molding is performed, a difference (velocity distribution) is easily generated in the extrusion speed of the extrusion molding material.
As illustrated in (a) and (b), similar to the invention illustrated in FIG. 1, the upper inner surface (3) and the lower inner surface (4) [4] near the extrusion opening (2) of the extrusion molding die (1). And a plurality of vibrating means (6) capable of vibrating particularly on the inner side surface (5)], even if the core (7) is provided, even if the vibrating means (6) are arranged side by side. Similar to the invention exemplified in 1, it is possible to prevent a difference (velocity distribution) in the extrusion speed of the extrusion molding material.

In the invention of this application, for example,
As illustrated in FIG. 2B, an extrusion molding die (1)
A metal or rubber embossing roll (8) having a desired concavo-convex pattern is provided in the vicinity of the extrusion port (2), and the vibrating means (6) located on the contact surface side of the embossing roll (8) is embossed. When it is made possible to vibrate in conjunction with (8), the embossing roll (8) is brought into contact with the vibrating surface of the original plate extruded while vibrating by the vibrating means (6) to form the uneven pattern, A sharp concavo-convex pattern can be formed smoothly, and a difference (velocity distribution) in the extrusion speed of the extrusion molding material can be prevented as in the invention illustrated in FIG.

The embossing roll (8) illustrated in FIG. 2B is provided in the vicinity of the extrusion opening (2) of the extrusion molding die (1) illustrated in FIG. 1 as in the case of FIG. 2B. Of course, it is okay.

Further, when extrusion molding is carried out by the extrusion molding apparatus illustrated in FIGS. 1 and 2, for example, a hydraulic material such as cement and a reinforcing fiber such as pulp fiber, vinylon fiber and polypropylene fiber are used as main components, and necessary. According to the above, silica stone powder, fly ash, aggregate such as slag, etc. are added, and when extrusion-molding an extrusion molding material such as a hydraulic composition formed by mixing with a required amount of water, the extrusion speed is slow. Extrusion molding is performed by vibrating the vibrating means (6) located, so-called, the vibrating means (6) located in a portion where the friction between the extrusion molding die (1) and the extrusion molding material is large in accordance with the extrusion speed. When the extrusion speed of the material is adjusted to be uniform or nearly uniform and extrusion is performed, a difference (velocity distribution) occurs in the extrusion speed of the extrusion molding material. The accurately the, can be reliably prevented, excellent uniformity of linearity and thickness, there is no sharp front and back surfaces, even the front and back surfaces of the texture can be extruded good master plate.

Of course, the invention of this application is not limited to the above-mentioned embodiments, and various aspects are possible in details such as the shape and structure of the extrusion molding die and the structure of the vibrating means. Needless to say.

[0025]

As described in detail above, according to the invention of this application, when an extrusion molding material is extrusion-molded, the straightness and the uniformity of the thickness of the extrusion-molded original plate are impaired, and the front surface and the back surface of the original plate are scratched. There is no risk of causing damage or deterioration of the texture of the front or back surface.

[Brief description of drawings]

FIG. 1 illustrates an embodiment of the invention of this application, (a) is a cross-sectional view of a main part, and (b) is a perspective view of the main part.

FIG. 2 illustrates a different embodiment of the invention of this application,
(A) is a horizontal cross-sectional view of a main part, and (b) is a vertical cross-sectional view of the main part.

[Explanation of symbols]

1 Extrusion mold 1a Upper mold 1b Lower mold 1c Side type 2 Extrusion 3 Upper inner surface 4 Lower inner surface 5 side inner surface 6 Vibration means 6a plate 7 core 8 embossing roll

Claims (5)

[Claims] 1. An extruding die near an extruding port,
An extrusion molding apparatus, wherein a plurality of vibrating means capable of vibrating separately are arranged side by side evenly or substantially evenly over at least the entire length of the upper and lower inner surfaces in the width direction. 2. The extrusion molding apparatus according to claim 1, wherein the vibrating means is a plate that vibrates ultrasonically. 3. The extrusion molding apparatus according to claim 1, wherein a hollow molding core is provided inside the extrusion molding die. 4. The embossing roll is provided in the vicinity of the extrusion opening of the extrusion molding die, and the vibrating means located on the side of the contact surface of the embossing roll is allowed to vibrate in conjunction with the embossing roll. The extrusion molding apparatus according to. 5. When the extrusion molding apparatus according to any one of claims 1 to 4 is used for extrusion molding, by vibrating a vibrating means located in a portion where the extrusion speed of the extrusion molding material is slow, the extrusion speed is made uniform or substantially uniform. An extrusion molding method characterized by uniformly adjusting and extruding.