JPH0631332A - Decoration shape material realized with stereographic pattern and forming method therefor - Google Patents

Abstract

PURPOSE:To provide a decoration shape material revealing various stereographic patterns and a method for forming such decoration shape material. CONSTITUTION:In the decoration shape material, a decoration wall 2 of a fundamental shape 10 having a hollow part 3 is made thinner than a common wall 4, unevennesses are repeated on the decoration wall in the inner and outer directions of the shape and a stereographic pattern continued in the extruding direction is revealed on the decoration wall with no fabrication. The stereographic pattern is revealed on both flat decoration wall 21 and isolated decoration wall 22, continued at an irregular interval in the extruding direction or continued in the extruding direction as it meanders right and left. In the forming method of the decoration shape material, the passing resistance of metal on the dressed wall forming land R is made remarkably smaller than the passing resistance of metal on the common wall forming land N, the unevennesses are repeated by the resistance difference on the decoration wall 2 in the inner and outer directions to reveal the stereographic pattern 5 continued in the extruding direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative mold material in which a decorative wall made of an aluminum basic mold material having an empty space is formed with a three-dimensional pattern which is continuous in the extruding direction by repeating unevenness inward and outward, and a method for molding the decorative mold material. Regarding

[0002]

BACKGROUND ART As means for forming a three-dimensional pattern on a decorative wall of an extruded mold material, (a) a rolling roller or a press molding die engraved on the surface of the molded material after extrusion molding is pressed to make a predetermined engraved line or An embossing method for engraving irregularities and (b) a corrosion method for engraving the original image by etching the surface of the die material after extrusion molding with a chemical using a photoengraving method are considered. (For example, Japanese Utility Model Laid-Open No. 53-143881 and Japanese Patent Laid-Open No. 53-127872)

As disclosed in Japanese Patent Publication No. 56-4324, which was previously invented by the applicant, the outer surface forming land of the die is provided with a notch so that the length of the outer surface forming land is shorter than that of the inner surface forming land, so that the center part of the decorative wall is formed. A decorative mold material that forms a three-dimensional pattern with horizontal stripes that forms a wavy shape in the extrusion direction of the mold material, and a crescent-shaped three-dimensional pattern in which both sides are curved in the opposite direction and bulges in the extrusion direction of the mold material at the center of the decorative wall. A decorative mold material that does is also known.

[0004]

In the embossing method, it is necessary to strongly press the marking die on the decorative wall of the extruded mold material or to press it strongly with the marking die, which is effective for the flat decorative wall. However, it is difficult to apply it to a curved decorative wall, and there is a problem that it requires a lot of labor and cost to manufacture the marking die. Further, the corrosion method is troublesome and requires post-treatment. In addition, when both means are used, each requires a mechanical equipment separate from the extrusion molding machine, and there is a problem that it is difficult to use the extrusion molding material having a particularly complicated shape.

In Japanese Patent Publication No. 56-4324 previously invented by the applicant, a horizontal striped three-dimensional pattern having a wavy shape in the extruding direction of the mold at the center of the decorative wall and an extruding of the mold at the center of the decorative wall. Although it is possible to form a crescent-shaped three-dimensional pattern that bulges in one direction and bends in the opposite direction on both sides, it has become desirable to develop a more versatile three-dimensional pattern. Accordingly, the present invention develops the idea of Japanese Patent Publication No. 56-4324, which was previously invented by the applicant, and provides a decorative mold material that stably reveals various three-dimensional patterns, and a method for molding the decorative mold material. It is in.

[0006]

In order to achieve the above object, the decorative mold material of the present invention is such that the decorative wall thickness of the basic mold material having an empty portion is made thinner than the normal wall thickness, and the decorative wall is covered with the inside and outside of the mold material. The three-dimensional pattern is repeated in the extrusion direction, and a three-dimensional pattern continuous in the extrusion direction is revealed without secondary processing. The three-dimensional pattern appears on at least one of the flat decorative wall and the arcuate decorative wall, and appears as a rope-shaped three-dimensional pattern that is wavy in the extruding direction and an S-shaped three-dimensional pattern that meanders left and right and is continuous in the extruding direction. .

Further, the method for forming a decorative molding material according to the present invention makes the metal passage resistance of the decorative wall forming land significantly smaller than the metal passage resistance of the normal wall forming land, thereby making the metal flow of the decorative wall forming land the normal wall forming land. It is made faster than the metal flow of No. 3 and the unevenness is repeated on the decorative wall in the inner and outer directions of the mold material due to the difference in the metal flow so that a three-dimensional pattern continuous in the extrusion direction can be revealed.

[0008] At the rear part of the outer surface forming land that comes into contact with the decorative wall surface, there is provided an escape port that widens in the extrusion direction, and at the front part of the inner surface forming land that comes into contact with the rear surface of the decorative wall, there is provided a guide port that widens toward the front. , The metal passage resistance of the decorative wall forming land is significantly smaller than the metal passage resistance of the normal wall forming land, and the metal flow along the inner and outer surface forming lands is made different, so that a three-dimensional pattern can be revealed by the difference in the metal flow. It was done like this.

[0009]

First, the structure of a decorative mold material according to the present invention will be described with reference to the drawings of an embodiment. The decorative mold material 1 has a wall thickness t of a decorative wall 2 of a enamel or semi-hollow basic mold material 10 having an empty portion 3. Usually, the wall thickness is made thinner than the wall thickness T of the wall 4, and the thin decorative wall 2 is alternately subjected to unevenness in the inner and outer directions of the mold material 10, and a three-dimensional pattern 5 continuous in the extrusion direction is subjected to chemical or mechanical secondary processing. It was the one that appeared without it. The three-dimensional pattern 5 may appear continuously on the flat plate-shaped decorative wall 21 as shown in FIG. 1 or may appear on the arc-shaped decorative wall 22 that bulges outward in an arc shape as shown in FIG. is there.

In the decorative mold material of FIG. 3, a partition wall 11 parallel to the left and right side walls 1b and 1c, or a partition wall 11 substantially parallel to the left and right side walls 1b and 1c is provided between the decorative wall 2 and the bottom wall 1a. Part 3, two vacant rooms 31,
It is divided into 32, and the three-dimensional pattern 5 appears on at least one of the decorative walls 21 and 22. The decorative mold material of FIG.
The partition wall 11 is provided to divide the empty portion 3 into three empty chambers 31, 32, 33,
The three-dimensional pattern 5 appears on at least one of the decorative walls 21, 22, 23.

In the three-dimensional pattern 5 appearing on the arcuate decorative wall 22,
Rope-shaped three-dimensional pattern 15 that repeats unevenness in the inner and outer directions of the basic mold material 10 and wavy in the extrusion direction, and S-shaped three-dimensional pattern that repeats unevenness in the inner and outer directions of the basic mold material 10 and continues in the extrusion direction while meandering left and right. There are 25. As shown in FIG. 5, the rope-shaped three-dimensional pattern 15 is a horizontal concave portion that intersects the extrusion direction at the top of the arcuate decorative wall 22.
5a appears at substantially constant intervals, the S-shaped three-dimensional patterns 25 are overlapped so as to be inclined in the extrusion direction, and the half width thereof is continuous while meandering in the extrusion direction.

Next, a method of molding the decorative mold material of the present invention will be described. In the die D composed of the pressing die d1 and the female die d2, among the lands continuous to the port P, the gap m between the decorative wall forming lands R is defined as the decorative wall. The gap M of the normal wall forming land N is formed to match the thickness t and the normal wall thickness T is formed, and the flow resistance of the metal passing through the decorative wall forming land R is the metal passing through the normal wall forming land N. It is formed so as to be significantly smaller than the flow resistance of For example, the decorative wall forming land length h is made shorter than the normal wall forming land length H.

Further, at the rear part of the decorative wall forming land R, there is provided an escape port 6 which is inclined and opened wide toward the extruding direction, and a guide port 7 which is obliquely opened toward the front and wide toward the front, for example, an inclination angle 30.
And the outer surface forming land r1 that comes in contact with the decorative wall surface 2a,
Land length h of inner surface forming land r2 touching the back surface 2b of the decorative wall
To shorten. The escape port 6 is formed on the die female die d2 and the guide port 7 is formed on the die pressing die d1, or conversely, the escape port 6 is formed on the die pressing die d1 and the guide port 7 is formed on the die female mold d2. It is desirable to form the guide port 7 and the guide port 7 in a staggered manner.

To extrude and mold a decorative mold material according to the present invention, a billet is placed in a container as in the conventional case, and the billet heated in the container is extruded toward a die D. N and land R
Since the metal flow resistance is different and a difference occurs in the flow of metal passing through both lands N and R, the decorative wall 2 extruded from the decorative wall forming land R has irregularities repeated inward and outward in the basic mold material 1. The three-dimensional pattern 5 continuous in the extrusion direction naturally appears.

Since the metal passing through the decorative wall forming land R flows along the inner surface forming land r2 having the guide port 7 in the front part and the outer surface forming land r1 having the escape hole 6 in the rear part, both lands r1 , R2 and the flow of metal along the normal wall forming land N cause a difference, and the three-dimensional pattern 5 clearly appears on the decorative wall 2 due to the difference.

The decorative mold material according to the present invention and its molding method will be described based on experimental examples. The shape of the basic mold material 10 used in the experiment is as shown in FIG.
A first vacant chamber 31 having a width of 20 mm and a width of 20 mm is formed, and on the left side of the first vacant chamber 31, a second vacant chamber 32 and a third vacant chamber 33 that descend and incline from a height of 20 mm to a right side wall 1b of 10 mm. The first vacant chamber 31 is provided with a plate-shaped decorative wall 21, the second vacant chamber 32 is bulged with a large arc-shaped decorative wall 22 with a radius of 7 mm, and the third vacant chamber 33 is bulged with a radius of 5 mm. The arcuate decorative wall 23 is formed.

Experimental Example 1 The clearance M of the normal wall forming land N is 2.0 mm, the land length H is 13 mm, the clearance m1 of the large arc-shaped decorative wall forming land R1 is 0.8 mm, the land length h1 is 3 mm, and the small arc shape. A die D1 having a gap m2 of a decorative wall forming land R2 of 0.8 mm and a land length h2 of 3 mm was manufactured, and a pure aluminum billet was heated to 480 ° C. and extruded using the die D1. Wall 2
The three-dimensional pattern 5 did not appear on 1,22,23.

Experimental Example 2 The normal wall forming land N of the die D1 was processed to change the land gap M from 2.0 mm to 1.2 mm, and the die female die d2 on the inlet side of the bottom wall forming land n was formed. A resistance portion E is provided so as to project to form a die D2 having a bad flow of the bottom wall forming land n. Pure aluminum billet with improved die D2
When heated to 480 ° C. and extruded, a three-dimensional pattern 5 slightly appeared on each decorative wall 21, 22, 23. However, when the extrusion speed was increased, the three-dimensional pattern 5 did not appear on the large arcuate decorative wall 22 and the small arcuate decorative wall 23. Later, the right side wall 1c was broken.

Experimental Example 3 The normal wall forming land N of the die D2 was processed, and a part of the land length H, specifically, the length of the side wall forming land n was processed.
While changing from 13 mm to 7 mm, an undercut K is provided in front of the small arc-shaped decorative wall forming land R2 of the male die d1.
Further, a die D3 having a flow reduction plate F attached to the lower port p1 leading to the bottom wall forming land n is manufactured. Improved Die D3
When a pure aluminum billet was heated to 480 ° C. and extruded by using, a three-dimensional pattern 5 appeared on each decorative wall 21, 22, 23. Even if the extrusion speed was increased, the three-dimensional pattern 5 appeared, but the three-dimensional pattern did not appear much.

Experimental Example 4 The small arc-shaped decorative wall forming land R2 of the die D3 was processed and the land length h2 was changed from 3 mm to 1.5 mm.
The resistance part E is attached to the die female die d2 on the inlet side of the right sidewall forming land n.
Produce a die D4 with added. When pure aluminum billets were heated to 500 ° C and extruded on the improved die D4, a dense and very complicated rope-shaped three-dimensional pattern 5 appeared on the small arc-shaped decorative wall 23 and a small uneven three-dimensional pattern 5 on the large arc-shaped decorative wall 22. Appeared. In the three-dimensional pattern 5 of the large arcuate decorative wall 22, the pitch of the three-dimensional pattern 5 is constant when the extrusion speed is increased, but the wave becomes small, while the wave of the three-dimensional pattern 5 becomes large when the extrusion speed is decreased, but the pitch is increased. It wasn't constant.

Experimental Example 5 Die D in which the large arc-shaped decorative wall forming land R1 of the die D4 was processed and the land length h1 was changed from 3 mm to 2 mm.
Produce 5. 60 pure aluminum billets on the improved die D5
When heated to 0 ° C. and extruded, a large wavy and complicated three-dimensional pattern 5 appeared on the large arc-shaped decorative wall 22. The wavy pitch of the small arcuate decorative wall 23 was not constant.

The results of Experimental Examples 1 to 5 are shown in Table 1.

[Table 1]

The cause of the appearance of the three-dimensional pattern 5 has not been completely clarified yet, but when the experiment was conducted by changing the land length h of the inner surface forming land r2 and the outer surface forming land r1, the billet's When the extrusion length is constant and the land lengths h of the inner and outer surface forming lands r2 and r1 are the same (all the lands of the conventional die were formed to have the same length), a mold material having a smooth wall surface can be obtained. Was given.

[0024]

Since the decorative mold material and the method for molding the same according to the present invention are as described above, the following effects can be obtained.
The flow resistance of the metal passing through the land for forming a decorative wall is made significantly smaller than the flow resistance of the metal passing through the land for forming a wall, thereby making it possible to perform three-dimensional processing without using chemical treatment or mechanical secondary processing on the decorative wall. The pattern can appear. Moreover, the three-dimensional pattern that appears on the decorative wall slightly reflects light, creating a high-quality aesthetic that cannot be represented by printing or coloring.

Even if the decorative wall is an arcuate decorative wall having an arcuate shape, similar to the plate-like decorative wall, unevenness is repeated inward and outward of the mold material, and a wavy three-dimensional pattern having a wavy shape in the extrusion direction and unevenness inward and outward. The S-shaped three-dimensional pattern which is continuous in the extrusion direction while meandering repeatedly can be continuously revealed by extrusion molding. As a result, a decorative mold material having a three-dimensional pattern can be manufactured much more easily and easily than ever before, and not only the productivity is dramatically improved, but also it can be provided at low cost.

Further, the decorative mold material of the present invention and the molding method thereof are extruded by adjusting the normal wall forming land interval and the decorative wall forming land interval, or the land length, which are mainly provided in the die, and adjusting the extrusion speed of the billet. Since it can be formed, the conventional equipment can be used as it is, and it is extremely easy to put it into practical use. The present invention provides a new design expression in the field of application of the decorative mold material.

[Brief description of drawings]

FIG. 1 is a perspective view of a decorative mold material according to the present invention.

FIG. 2 is a perspective view of a decorative mold material showing a three-dimensional pattern.

FIG. 3 is a perspective view of a decorative mold member in which a three-dimensional pattern is revealed on a plate-shaped decorative wall.

FIG. 4 is a perspective view of a decorative mold material in which a three-dimensional pattern is revealed on an arcuate decorative wall.

FIG. 5 is a perspective view of a decorative mold material showing a three-dimensional pattern.

FIG. 6 is a side view showing a structural example of a basic mold material.

FIG. 7 is a cross-sectional view of a die used for extruding the decorative mold material of the present invention.

8 (A) and 8 (B) are enlarged cross-sectional views of essential parts showing structural examples of a normal wall forming land and a decorative wall forming land.

FIG. 9 is an enlarged sectional view of an essential part showing a structural example of (A) and (B) decorative wall forming lands.

FIG. 10 is a sectional view of a die.

FIG. 11 is a side view of an undercut die pressing die.

FIG. 12 is a side view of a die showing a relationship between a land and a port.

FIG. 13 is a side view of a die showing an arrangement example of a resistance portion and a flow rate reducing plate.

[Explanation of symbols]

1 Decorative mold material 2,21,22,23 Decorative wall, 2a Decorative wall surface, 2b Decorative wall back surface 3 Empty space, 31,32,33 Vacancy 4 Normal wall 5 Three-dimensional pattern, 5a recess, 15 Rope-shaped three-dimensional pattern, 25 S
Character-shaped three-dimensional pattern 6 Escape 7 Guide port 10 Basic mold material D die, d1 die pressing die, d2 die female die, P, p1
Port E Resistance part, F Flow rate reducing plate, K Undercut N, n Normal wall forming land, R, R1, R2 Decorative wall forming land r1 Outer surface forming land, r2 Inner surface forming land H Normal wall forming land Length, h, h1 , h2 Decorative wall forming land length M Normal wall forming land gap, m, m1, m2 Decorative wall forming land gap T Normal wall thickness, t Decorative wall thickness

Claims (7)

[Claims] 1. A decorative wall (2) of a basic mold material (10) having an empty space (3), wherein unevenness is repeated inward and outward of the mold material, and a three-dimensional pattern (5) continuous in the extrusion direction is not secondarily processed. The cosmetic material that appeared in. 2. An empty part (3) of a basic mold material (10) is divided into several vacant rooms by a partition wall (11), and a three-dimensional pattern (5) appears on at least one vacant room (2). The decorative mold material according to claim 1. 3. The decorative wall (2) has a flat plate shape, and the decorative wall thickness (t) is thinner than the wall thickness (T) of the normal wall (4) to form a plate-like decorative wall (21). The decorative mold material according to claim 1 or 2, wherein the plate-shaped decorative wall has a three-dimensional pattern (5) which is continuous in the extruding direction by repeating unevenness inward and outward of the mold material. 4. The decorative wall thickness (t) is thinner than the normal wall thickness (T), and is formed into an arcuate decorative wall (22) that bulges outward in an arc shape. The decorative mold material according to claim 1 or 2, wherein a rope-shaped three-dimensional pattern (15) having a wavy shape in the extrusion direction is revealed by repeating unevenness in the inner and outer directions of the mold material. 5. An arcuate decorative wall (22) having a decorative wall thickness (t) smaller than that of a normal wall (4) and bulging toward the outside.
The decorative mold material according to claim 1 or 2, wherein the S-shaped three-dimensional pattern (25) which is continuous in the extrusion direction while meandering to the left and right is repeatedly formed on the surface of the mold material. 6. In the die land formed on the die (D), the flow resistance of the metal passing through the decorative wall forming land (R) is made significantly smaller than the flow resistance of the metal passing through the normal wall forming land (N). A method for molding a decorative mold material, which allows the decorative wall (2) of the mold material to have a three-dimensional pattern (5) that is continuous meandering in the extruding direction on the decorative wall (2) of the mold material due to the resistance difference. 7. An inner surface contacting the back surface (2b) of the decorative wall is provided at the rear portion of the outer surface forming land (r1) contacting the decorative wall surface (2a) with an escape opening (6) which is inclined and wide toward the extrusion direction. At the front part of the forming land (r2), a guide opening (7) is formed that is wide and inclined toward the front, and the flow of metal along both forming lands is made different, and the three-dimensional pattern (5) is created by the difference. The method for molding a decorative mold material according to claim 6, wherein: