JPH08294908A - Stereoscopic pattern-forming method for extrusion molding - Google Patents

Abstract

PURPOSE: To simply and effectively mold a stereoscopic pattern to a decorating surface by tearing a protrusion molding material by utilizing the speed difference between an extrusion molding and the protrusion molding material, forming it in a protrusion state, and integrating it with the molding. CONSTITUTION: The body D of an extruded molding A extruded by a main extruder from the head 15 of a mold 14 and a decorating plate E extruded by a sub-extruder are extruded at the same extruding speed V1. The protrusion molding material S extruded by a protrusion extruder is extruded slower extruding speed V2 than the speed V1 of the body D. Thus, the body D and the plate E are brought into contact with each other to be extruded while they are passing a body molding port 16 and a decorating port 17. The material S is torn by the pressure of the decorating surface F and the adhesive force of the viscosity after it is extruded by the surface F of the softened state, and dispersed as protrusion G on the surface F.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a three-dimensional pattern on a decorative surface of an extruded product which is incorporated between wall panels of a structure such as a building or a fence.

[0002]

2. Description of the Related Art Conventionally, a wall panel may have a three-dimensional pattern having irregularities on its surface in order to improve the appearance of a building. In general, a plurality of such wall panels are arranged side by side to form a wall surface, and thus a gap may occur between the wall panels. Therefore, a long extruded product (gasket) made of rubber or synthetic resin is incorporated in the gap, and the decorative surface of the extruded product is designed to eliminate discomfort with the wall panel. A three-dimensional pattern with unevenness similar to that is often formed.

The three-dimensional pattern of such an extrusion-molded product is conventionally a graining roller in which a decorative surface of an extrusion-molded product sent at a constant speed is engraved with a grain pattern (a three-dimensional pattern having irregularities such as wrinkles). Is formed by pressing.

[0004]

However, in such a method for forming a three-dimensional pattern, the decorated surface of the extruded product is flat,
Moreover, since it has a certain degree of hardness, it is not possible to form an uneven pattern with a very deep depth even if the graining roller with a deep grain pattern is strongly pressed against the decorative surface of the extrusion molded product. have. There is also a problem that the shape of the extrusion-molded product and the extrusion speed may be changed when the grain-pressing roller is strongly pressed.

Therefore, an object of the present invention is to provide a method for surely forming a three-dimensional pattern on the decorative surface of an extruded product.

[0006]

SUMMARY OF THE INVENTION The present invention is, firstly, a molding material for a convex portion, which is slower than the constant speed, on a decorative surface of an extrusion molded product which is molded by a molding die and is fed at a constant speed. By extruding, by the speed difference between the extrusion molded product and the molding material for the convex portion to tear off the molding material for the convex portion to form a projection, by the convex portion molding port of the die provided in the molding die Secondly, an extrusion molded article that moves in a softened state by a method for forming a three-dimensional pattern of an extrusion molded article, characterized by forming a three-dimensional pattern in which the projections are scattered on the decorative surface. Dropping the convex pellets on the decorative surface, pressing the convex pellets to the decorative surface by a roller, integrating the extrusion molded product and the convex pellets by the heat of vulcanization, Form a three-dimensional pattern in which the pellets for protrusions are scattered on the decorative surface Up by three-dimensional pattern forming method of the extrudate, characterized in, it has solved the above problems.

[0007]

The operation of the first three-dimensional pattern forming method will be described. The molding material for convex portions is extruded onto the decorated surface of the extrusion-molded product fed at a constant speed at a speed slower than the constant speed. The molding material for convex parts is
Since the extrusion speed is slower than the extrusion speed of the extruded product, the extruded product is pulled by the extruded product, and is torn and cut into a protrusion.

[0008] The shape of the projection is adjusted by the convex molding opening when passing through the convex molding opening of the die. In this way, a three-dimensional pattern in which protrusions are scattered is formed on the decorative surface.

When the protrusion is pressed against the decorative surface by the graining roller, the softened protrusion is deformed, and a deeper grain pattern with unevenness is formed on the decorative surface. When the die is reciprocally moved in the width direction of the extruded product, a three-dimensional pattern having protrusions arranged in a wavy pattern is formed on the decorative surface.

The second three-dimensional pattern forming method will be described. The convex pellets are dropped onto the decorative surface of the extruded product that moves in the softened state. After that, the convex pellets are pressed against the decorative surface by a roller, and the extrusion molded product and the convex pellets are integrated by the heat of vulcanization. The convex pellets are pushed into the decorative surface by the roller to some extent, and when they are vulcanized and softened, they are brought into close contact with the decorative surface and are reliably integrated with the decorative surface. As a result, a three-dimensional pattern in which the pellets for convex portions are scattered is formed on the decorative surface. In addition,
If a roller is used for the grain, a deeper grain pattern with unevenness is formed on the decorative surface.

[0011]

Embodiments of the present invention will be described below with reference to FIGS. Three-dimensional pattern forming apparatus 1 shown in FIGS. 1 and 2.
1 is an apparatus for forming a three-dimensional pattern on the decorative surface F of the extruded product A. The molding die 14 of the three-dimensional pattern forming device 11 includes a die body 23 and a die 15.

The die main body 23 and the die 15 are provided with main body molding ports 16 and 16 for molding the main body D of the extrusion molded product A, and a decorative plate molding port 17 for forming the decorative plate E of the extrusion molded product A. (The decorative plate forming port formed on the base 15 is not shown.). Furthermore, the mold body 23 and the base 15 are
A convex molding port 18 for adjusting the shape of the protrusion G is also formed.

On the downstream side of the die 15, support pieces 19, 19 for horizontally supporting the body D molded while being extruded from the molding die 14 by a main extruder (not shown) are horizontally provided. Further, on the downstream side of the base 15, there is provided a graining roller 13 which can rotate and move up and down.

Next, the order of forming a three-dimensional pattern on the decorative surface F of the decorative plate E of the extruded product A using the three-dimensional pattern forming device 11 will be described. The main body D extruded from the die 15 of the molding die 14 by the main extruder and the decorative plate E extruded by the sub extruder (not shown) are extruded at the same extrusion speed V1. The convex molding material S extruded by a convex molding material extruder (not shown) is extruded at an extrusion speed V2 slower than the extrusion speed V1 of the main body D and the decorative plate E.

Therefore, the main body D and the decorative plate E are extruded in close contact with each other while passing through the main body forming port 16 and the decorative plate forming port 17, but the convex forming material S is in a softened state. After being extruded on the decorative surface F of the decorative plate E, the decorative surface F is torn off by the adhesive force due to the pressure and viscosity of the decorative surface F.
Are formed as protrusions G and are scattered.

EPDM (ethylene / propylene / diene copolymer rubber) is used as an example of the material of the main body D of the extrusion molded product A, the decorative plate E, and the molding material S for the convex portion. The convex molding material S may be another material as long as it has a property of being stretchable and cut. For example, when a soft material such as rubber is used for the convex molding material S and a material harder than rubber is used for the decorative board E, the convex molding material S is easily broken.

The shape of the protrusion G attached to the decorative surface F is adjusted while the protrusion G passes through the convex molding port 18. As shown in FIG. 5 (a), the protrusion forming ports 18 are formed in a plurality of substantially square shapes and are formed at equal intervals in the width direction of the extruded product A. Therefore, the intervals between the protrusions G in the width direction of the extrusion-molded product A are substantially equal as shown in FIG.

The interval between the protrusions G in the longitudinal direction of the extrusion molded article A is determined by the difference between the extrusion speeds V1 and V2 and the extrusion amount of the convex molding material S by the convex molding material extruder. If the difference between the extrusion speeds V1 and V2 and the extrusion amount are set to be constant, the intervals between the protrusions G in the longitudinal direction of the extrusion-molded product A become substantially equal as shown in FIG. 4 (a). Become. If the extrusion speeds V1 and V2 are the same, the convex molding material S becomes a ridge W as shown in FIG. 4 (b).

Further, the protruding portion forming port is formed in a rectangular shape or a trapezoidal shape like the protruding portion forming ports 20, 21 and 22 shown in FIGS. They may be formed at unequal intervals. In this case, the cross-sectional shape of the protrusion G in the width direction of the extruded product A is rectangular or trapezoidal, and the intervals are non-uniform.

Therefore, as for the shape and arrangement of the projections G, the extrusion molded article A is attached by changing the shape of the convex molding port, the extrusion speeds V1 and V2, or the extrusion amount of the convex molding material. It can be set so that a pattern that matches the pattern of the wall or fence is formed. By the way, the numerical value is shown as a reference example, the extrusion speed V1 of the extrusion molded product A is about 5 m / min, and the extrusion speed V2 of the protrusion G is about (1/2) of the speed V1.
0) to (1/2) is about 25 cm to 2.5 m per minute. The height of the protrusion G is about 2 to 4 mm and the diameter is about 2 m.
m.

Thus, the decorative board E in the softened state
After the protrusions G are integrated with each other, the extrusion-molded product A is passed through a vulcanization tank (not shown) to promote cross-linking between EPDM molecules, and to have a practical elasticity. When the convex molding material is integrated with the decorative plate E by forming the projection G, if the projection G is pressed against the decorative plate E by the graining roller 13 before the extrusion molded article A is put into the vulcanization tank, As the protrusion G in the softened state is deformed, the decorative surface F is formed into a deeper grain pattern with unevenness. Finally, the extruded product A is cut into a desired length to obtain a product.

Further, in the above embodiment, the protrusions G are arranged in parallel with the longitudinal direction of the extruded product.
As shown in FIGS. 6A and 6B, the three-dimensional pattern forming device 111 shown in FIGS. The molding die 114 of the three-dimensional pattern forming apparatus 111 also includes a die body 123 (see FIG. 6) and a die 115 (see FIG. 7). However, unlike the extrusion molded product A molded by the three-dimensional pattern forming device 11 of FIG. 1, the extrusion molded product B molded by the three-dimensional pattern forming device 111 is a molded product without a decorative plate. Therefore, the protrusion G is provided on the decorative surface F of the extruded product B.

The mold body 123 is formed with an extrusion molded product molding port 116 for molding the extrusion molded product B. Base 1
Three convex-portion forming ports 118 are formed in 15. The base 115 is fixed to the shutter 124. The shutter 124 is supported by support pieces 125, 125, guided by a shutter guide 126, and horizontally reciprocated integrally with the base 115 by a reciprocating linear drive device (not shown).

The shutter 124 has a discharge port 127 through which the convex molding material S formed on the molding die 114 is pushed out.
And a horizontal convex molding material receiving groove 128 connected to each other, and three convex molding material guide grooves 129 connected to the convex molding material receiving groove 128 and each convex molding port 118. Has been formed. Therefore, the molding material S for the convex portion includes the discharge port 127, the molding material receiving groove 128 for the convex portion, and three molding material guiding grooves 1 for the convex portion.
It is adapted to be extruded from the three convex portion forming ports 118 via 29.

A three-dimensional pattern forming device 111 having such a configuration
In the above, while the die 115 is horizontally reciprocated in the width direction of the extrusion-molded product B, the extrusion speed V1 of the extrusion-molded product B by the main extruder (not shown) is controlled by the sub-extruder (not-illustrated). When the extruded product A and the convex molding material S are extruded from the molding die 114 at a speed higher than the extrusion speed V2 of the above, the convex molding material S becomes a protrusion G, as shown in FIG. The extruded products B are arranged in a wavy pattern at intervals in the longitudinal direction.

The extrusion speed V1 of the extrusion-molded product B and the extrusion speed V2 of the molding material S for the convex portion are set to be the same, and the extrusion-molded product B is
When the convex molding S and the convex molding S are extruded from the molding die, the convex molding material S becomes the protrusion W of FIG.
Are arranged in a wavy manner in the longitudinal direction. Even when this three-dimensional pattern forming apparatus 111 is used, when the graining roller 113 is pressed against the decorative surface F with the protrusion G protruding,
As the protrusion G in the softened state is deformed, the decorative surface F is formed in a deeper grain pattern with unevenness.

The three-dimensional pattern forming devices 11 and 111 described above are
Inside the molding dies 14 and 114, the convex molding material S is projected G
Although it is integrated with the decorative surface F of the extrusion-molded product, as in the three-dimensional pattern forming device 211 shown in FIG.
Instead of the protrusion G, the convex pellets H may be dropped on the decorative surface F of the extruded product outside the unit 14.

The three-dimensional pattern forming device 211 is mainly composed of a molding die 214, a hopper 240, and a roller 213, and the extrusion molding product molding port 2 of the molding die 214.
After dropping the convex pellets H from the hopper 240 onto the decorated surface F of the plate-shaped extruded product B in the softened state extruded from 16, the rollers 213 are applied to the scattered convex pellets H.
By pressing, the decorative surface F of the extruded product B can be formed into a three-dimensional pattern as shown in FIG.

Since the convex pellets H pressed against the decorative surface F by the roller 213 are in a softened state, they are crushed to some extent. Moreover, the base portion of the pellet H for the convex portion is pushed into the decorative surface F to increase the contact area with the decorative surface F, and when the extruded product is then passed through the vulcanization tank, The heat causes it to be brought into close contact with the decorative surface F. In this way, the convex portion pellets H are reliably integrated with the extrusion-molded product B and do not fall off from the decorative surface F.

The roller 2 having a flat surface (not shown)
13 (see FIG. 9) instead of the graining roller (see FIG. 11).
See also) may be used. By using this graining roller 313, the pellets H for each convex portion are pressed against the decorative surface F with different indented amounts (immersed amounts).
Further, the entire decorative surface can be made into a grain pattern as shown in FIG.

The graining rollers 13, 113 and 313 are
It is possible to form a grain pattern only by following the rotation of the extruded product when it is pressed against the extruded product, but if it is designed to rotate by a rotating device (not shown), A clear grain pattern can be formed.

When a grain pattern is formed by using the graining roller 313, it is easier for the convex pellet H to be formed into a grain pattern when the hardness is softer than that of the protrusion G formed by splitting. . On the other hand, in the case of the protrusion G formed by being cut into pieces, it is better to make the extruded product harder without softening the convex molding material, and the convex molding material has better tearing property. The protrusion itself tends to be formed in a grain pattern.

The extruded product A having the three-dimensional pattern formed in this manner is incorporated into the space between the wall panels B having the grain pattern, as shown in FIGS. 14 and 15.

[0034]

According to the three-dimensional pattern forming method of claim 1,
By utilizing the speed difference between the extruded product and the convex molding material, the convex molding material is torn up and formed into protrusions that are integrated with the extruded product. It can be easily and surely formed on the decorative surface. As in the three-dimensional pattern forming method of the second aspect, when the protrusion is pressed against the decorative surface by the graining roller, it is possible to surely and easily form the grained pattern having a large unevenness difference.

When the die is moved in the width direction of the extrusion-molded article as in the three-dimensional pattern forming method of the third aspect, the protrusions are arranged in a wavy shape, and the three-dimensional pattern of the decorative surface can be changed.

According to the method for forming a three-dimensional pattern of claim 4, the convex pellets dropped onto the decorative surface of the extruded product are pressed by the roller and then adhered to the decorative surface by the heat of vulcanization. Since the convex pellets are reliably integrated with the decorative surface, it is possible to prevent the convex pellets from falling off, and the convex pellets form a three-dimensional pattern on the decorative surface. It can be formed reliably and easily.

As in the method for forming a three-dimensional pattern according to claim 5, when the pellets for convex portions are pressed against the decorative surface by the graining roller, it is possible to surely and easily form a grain pattern having a large unevenness. .

[Brief description of drawings]

FIG. 1 is a front view of a three-dimensional pattern forming apparatus, which is a view taken along arrow 1-1 of FIG.

FIG. 2 is a right side view of FIG.

FIG. 3 is a perspective view of an extrusion-molded product in which a three-dimensional pattern including protrusions is formed on a decorative surface by the three-dimensional pattern forming device of FIG.

4 (a) is a plan view of the extrusion-molded article of FIG. 3. FIG. FIG. 2B is a plan view of an extrusion-molded product in which a three-dimensional pattern forming device of FIG.

5 (a) is a right side view of FIG. 1, and is a view showing only a convex molding port. (B) It is the figure which showed the convex part molding port of another Example. (C) It is the figure which showed the convex part molding port of another Example.

FIG. 6 is a front view of a three-dimensional pattern forming apparatus according to another embodiment, which is a cross-sectional view taken along the extrusion direction of an extrusion molded product.

FIG. 7 is a right side view of FIG.

8 (a) is a plan view of an extrusion-molded product in which a three-dimensional pattern is formed on a decorative surface by projections arranged in a wave shape by the three-dimensional pattern forming device of FIG. FIG. 7B is a plan view of an extruded product in which a three-dimensional pattern having wavy ridges is formed on the decorative surface by the three-dimensional pattern forming device of FIG. 6.

FIG. 9 is a front view of a three-dimensional pattern forming apparatus according to another embodiment, which is a cross-sectional view taken along the extrusion direction of an extruded product.

10 is a plan view of an extruded product in which a three-dimensional pattern formed by pellets for convex portions is formed on the decorative surface by the three-dimensional pattern forming device of FIG.

FIG. 11 is a side view of a roller according to another embodiment.

12 is a plan view of an extruded product having a grain pattern formed by the roller of FIG. 11. FIG.

FIG. 13 is a view of the extrusion-molded article of FIG. 12 seen from the end.

FIG. 14 is a plan view showing a state where the extrusion-molded article having the grain pattern of FIG. 12 is incorporated in the gap of the wall panel.

15 is a sectional view taken along the line 15-15 of FIG.

[Explanation of symbols]

A, B Extrusion-molded product F Decorative surface of extrusion-molded product G Protrusion H Pellets for convex part 13,313 Graveling roller 14,114 Molding die 15,115 Die cap 18,118 Convex part forming port 213 Roller

Claims (5)

[Claims] 1. A molding material for a convex portion is extruded at a speed slower than the constant speed onto a decorative surface of an extrusion molded product that is molded by a molding die and sent at a constant speed, and the extrusion molded product and the convex portion are formed. The convex molding material is cut into pieces by a speed difference with the molding material to form a projection, and the shape of the projection is adjusted by the convex molding opening of the die provided in the molding die, and the decorative surface is formed. Forming a three-dimensional pattern in which the protrusions are scattered,
A method for forming a three-dimensional pattern of an extruded product. 2. The method for forming a three-dimensional pattern of an extrusion-molded article according to claim 1, wherein the convex molding material is pressed against the decorative surface by a graining roller. 3. The method for forming a three-dimensional pattern of an extruded product according to claim 1, wherein the die is provided so as to be movable in a width direction of the extruded product. 4. A pellet for a convex portion is dropped on a decorated surface of an extruded product that moves in a softened state, and the pellet for a convex portion is pressed against the decorated surface by a roller to form the extruded product and the convex portion. A method for forming a three-dimensional pattern of an extrusion-molded product, comprising forming a three-dimensional pattern in which the pellets for protrusions are scattered on the decorated surface by integrating the pellets with heat of vulcanization. 5. The method for forming a three-dimensional pattern of an extrusion molded article according to claim 4, wherein the roller is a graining roller.