JP2911013B2 - Method of forming continuous floating pattern on extruded product - Google Patents

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 continuous floating pattern along the extrusion direction on a surface of a long extruded product by an extrusion process or only a subsequent process.

[0002]

2. Description of the Related Art Heretofore, in order to form a pattern on the surface of a long extruded product, printing, transfer, lamination, hot stamping, embossing, and the like are performed in a separate process after the extrusion. . Since the formation of the pattern by these methods is performed in a step different from the extrusion molding, the number of steps is increased, and a separate means for forming the pattern is required, resulting in an increase in cost. .

[0003]

SUMMARY OF THE INVENTION According to the present invention, a continuous floating pattern is formed along the extrusion direction on the surface of a long extruded product by an extrusion molding step or a subsequent step alone without using a separate step. It was made with the task of forming.

[0004]

Means for Solving the Problems To solve the above problems, a means adopted by the present invention is to form a surface layer portion of an extruded product continuously extruded from an extrusion opening of a basic forming die into a plurality of layers having different foaming rates. By molding with various kinds of molding raw materials and exposing the molding part by each molding raw material to the surface, the part molded by the molding raw material having a high foaming rate is raised, and continuously raised on the surface of the extruded product. It is to form a pattern.

[0005]

According to the present invention, a portion molded with a molding material having a high foaming rate foams greatly, and emerges from a portion molded with another material, thereby forming an extruded product by an extrusion molding process or a subsequent process only. A continuous embossed pattern is formed on the surface of.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a description will be given of a molding apparatus used for carrying out a method for forming a continuous floating pattern on an extruded product according to a first embodiment of the present invention. 1 and 2, the first die D ₁ is a basic molding die is cylindrical, the inside, the second and third each die D _2, D ₃ of are arranged respectively . Each die D ₂ of the second and _3, D ₃ is a disk-shaped. The first central portion of the die D _1, extrusion opening A ₁ of a rectangular shape are formed, formed on the second central portion of the die D _2, as shown in FIG. 3, the upper side is uneven It is formed substantially rectangular opening a ₂ that is, the upper end is missing. As shown in FIG. 4, each of the first and second dies D _1,
The central portion of the third die D ₃ disposed between the D _2, wherein the extrusion opening A ₁ and the opening A ₃ of the same shape is formed, on its rear surface, is connected to the opening A ₃ A raw material supply groove 1 is provided in a vertical direction.

In the above molding apparatus, the second die D
The first molding material M ₁ is supplied from the _second opening A _2, and the second molding material M ₂ is supplied from the material supply groove 1 of the second die D ₂ . Each of the molding raw materials M _{1 and} M ₂ is a rubber raw material, and the molding raw material M ₂ has a foaming property.
Forming material M ₁ is non-effervescent. The upper surface of the raw material passing through the opening A ₂ of the second die D _2, but in a state where the linear grooves are formed a plurality of corresponding to the shape of the opening A _2, the third die D When entering the _third opening a _3, the second forming material M ₂ enters the portion of the linear groove, extruded continuously in this state from the extrusion port a ₁ of the first die D ₁ is a basic forming die Is done. Therefore, the cross-sectional shape of the extrudate B ₁ immediately after extrusion, as shown in FIG. 6, but corresponds to the shape of the extrusion opening A _1, when performing vulcanization after extrusion, in FIG. 7 as shown, the second straight molding portion by the forming material M ₂ in having a foaming property and foaming, and raised from the surface of the molded portion of the first forming material M _1, and continuously along the direction of extrusion A floating pattern is formed. Further, in the above embodiment, even if both the first and second molding materials M _{1 and} M ₂ have foamability, the foaming rate of the _second molding material M ₂ is equal to the first molding material. Raw material M ₁
If it is larger than that of, a floating pattern can be formed. Thus, by extrusion molding the extrusion B ₁ by the forming apparatus, which only vulcanized to form a浮出pattern that continuously along the extrusion direction on the surface of the extrudate B _1.

Next, a method of forming a continuous floating pattern at the extrusion port according to a second embodiment of the present invention will be described. 8 to 13 show a molding apparatus for carrying out this method. This molding apparatus is composed of a first molding die,
Inside of the die D _11, the second and third each die D _12, D ₁₃
Is arranged. The second and third dies D ₁₂ ,
D ₁₃ is a portion for forming a multi-layer material in which the heterogeneous material in multilayer form. This embodiment includes a first raw material M _1, the two kinds of raw materials of the second material M ₂ is a multilayer material M ₃ is molded, the two types of raw materials, materials, colors and the like are going . As shown in FIG. 11, in the center of the second die D _12, the basic opening A for supplying the first raw material M _1
12 are mounted on the upper side of the base opening A _12, the opening 1 again in two for supplying a first raw material M ₁ rectangular
1 are formed horizontally separated from each other in the vertical direction. Basic opening A ₁₂ has a substantially rectangular shape, the portion constituting the upper side are formed in a wave shape. A front surface of the second die D _12, Around the opening 11 located below, the raw material feed channel 12 for supplying a second material M ₂ from both sides are provided. In addition, as shown in FIG. 12, a third die D ₁₃ disposed between the first and second dies D ₁₁ and D _12.
At the center portion of the basic opening A ₁₃ of the base opening A ₁₂ having the same shape provided at the center portion of the second die D ₁₂ is provided,
Above the base opening A _13, each of the first and second raw material M
_1, a multilayer raw material M ₃ in which M ₂ is alternately laminated to form a multilayer.
Opening 13 is provided. Between the multi-layer material M ₃ of the opening 13 and the base aperture A ₁₃ on the front surface of the third die D _13, passage 14 of the multilayer material M ₃ is provided. Between the passage 14 and the base aperture A _13, a multi-layer material M _3, and the anti-collision plate 15 for preventing provided from the first raw material M ₁ through the base opening A ₁₃ collides I have. As shown in FIG. 13, the first die D extrusion port A ₁₁ in the center of ₁₁ is formed a base forming die. The extrusion port A _11, the second and substantially have the same shape as the third respective basic opening A ₁₂ provided on each die D _12, D _{13 of,} A _13, the portion constituting the upper side is corrugated Is formed.
A first upper portion of the raw material M ₁ supplied from the second and third of each die D _12, each provided on D ₁₃ base opening A _12, A _13,
For forming material in a state where the multilayer material M ₃ are laminated is extruded from the extrusion molding opening A _11, the height of the extrusion port A ₁₁ is slightly above the height of the basic opening A _12, A ₁₃ (by the amount corresponding to the thickness of the multilayer material M ₃ to be extruded) it is larger.

As shown in FIG. 8 to FIG.
Shutter -17 by a pair of guide bodies 16 on the front surface of the die D ₁₁ is provided movably in the vertical direction P. The moving direction of the shutter -17 is the stacking direction of the multilayer material M _3. At the center of the shutter 17, a first die D
Moldings opening 18 for the passage of the extrusion B ₂ which is extruded from the extrusion molding opening A ₁₁ of ₁₁ is provided, a pair of cutters in the portion of the opening 18 - Contact predetermined interval section 19 in the vertical direction It is provided horizontally.

[0010] Each forming material M _1, M ₂ is the same as that of the embodiment, both a raw material rubber, the forming material M ₂ has a foaming, molding material M ₁ is non-foam Sex. The second raw material M ₁ first each of the two openings 11 of the die D _12, also from the raw material feed channel 12 is a second material M _2, is supplied, the third die D ₁₃ stacked in layers in a portion of the opening 13 the multilayer material M _3, and the second through passage 14 as it is first die D ₁₁
It is extruded from the extrusion molding opening A ₁₁ of. On the other hand, the second and third
Each die D _12, the first raw material M ₁ which is supplied to the base opening A _12, A ₁₃ of D _13, and the multilayer material M ₃ are, part of the extrusion port A ₁₁ of the first die D ₁₁ of And the first raw material M
_The multilayer raw material M ₃ is extruded in a state of being stacked on top of the _first raw material ₁ . Moreover, the first, second, and third dies D _11, D _12,
Since the upper side portion of the D extrusion port A ₁₁ of generally square shape provided on the ₁₃ and the base aperture A _12, A ₁₃ is formed in a wave shape, the multilayer material M ₃ with respect to the first raw material M ₁ when laminated, the multilayer material M ₃ are being stacked becomes wavy, its surface is made uneven in the width direction.

FIG. 14 shows that a multilayer raw material M ₃ is added to the first raw material M _1.
There is a cross-sectional view of a laminated molded material, FIG. 15 is a pattern that appears to extrusion B ₂ of the surface, 16 to 18, the upper cutter of the shutter -17 - Part 19 each The lines E ₁ -E ₁ , E ₂ -E ₂ and E _3-in FIG.
E is a cross-sectional view of the extrusion B ₂ which is extruded in a state located in the _3-wire. Therefore, the upper cutter of the shutter -17 - by section 19, while cutting the multilayer portion of the forming material (part of the multilayer material M _3), the forming raw material Extrusion, 15
As shown in FIG. 3, the first and second raw materials M _{1 and} M ₂ are respectively exposed on the cut surface (surface) of the extruded product B ₂ , and the boundary line 21 appears, and the concave portion 22 is partially formed. Is formed, and a predetermined pattern including a three-dimensional pattern is formed simultaneously with the extrusion molding. During extrusion molding, the shutter
17 is slightly moved to gradually change the cutting position of the multilayer part of the forming raw material.
For 1 disappears intersect, the pattern of the cut surface becomes wood (15, there is shown a portion molded during movement of the shutter -17 in F _1, F _2). When the extrudates B ₂ vulcanizing process, as shown in FIGS. 16 to 18, and the second forming material M ₂ is the partial foamed stand out, the extrudate B ₂ cut surface ( On the front surface), a composite pattern is formed by adding a floating pattern due to the foaming of the _second molding material M2 to the woodgrain pattern. Incidentally, a pair of upper and lower cutters - the spacing of the parts 19 is constant, the lower the cutter - even by part 19, since the molding material is cut, the thickness of the extrudate B ₂ becomes constant.

[0012]

According to the present invention, the surface layer portion of an extruded product continuously extruded from the extrusion opening of the basic forming die is molded from a plurality of types of molding materials having different foaming rates, and a molding portion is formed by each molding material. By exposing on the surface, the part molded by the molding raw material with a high foaming rate is raised,
Since the structure is such that a continuous floating pattern is formed on the surface of the extruded product, the extruded product can be extruded onto the surface of a long extruded product only by an extrusion process or a process subsequent to this process without a separate process. A floating pattern along a direction can be formed.

[Brief description of the drawings]

FIG. 1 is a front view of a molding apparatus for performing a method according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line Y ₁ -Y ₁ of FIG. 1;

FIG. 3 is a front view of a _second die D2.

FIG. 4 is a rear view of a _third die D3.

5 is a plan view of the extrusion B _1.

6 is a cross-sectional view of an extrusion molded article B ₁ immediately after extrusion.

7 is a cross-sectional view of an extrusion molded article B ₁ after vulcanization.

FIG. 8 is a front view of a molding apparatus for performing the method according to the second embodiment of the present invention.

FIG. 9 is a sectional view taken along line X ₂ -X _{2 in} FIG. 8;

FIG. 10 is a sectional view taken along line Y ₂ -Y ₂ of FIG. 8;

11 is a front view of a second die D _12.

12 is a front view of a third die D _13.

13 is a front view of a first die (base molding die) D _11.

14 is a cross-sectional view of the forming material is extruded from the extrusion molding opening A ₁₁ of the molding apparatus.

15 is a plan view of the extrusion B ₂ synthesis pattern has been formed between the grain pattern and the浮出pattern on the surface.

FIG. 16 is a sectional view of a portion (E ₁ ) in FIG. 14;

FIG. 17 is a sectional view of a portion (E ₂ ) in FIG. 14;

FIG. 18 is a sectional view of a portion (E ₃ ) in FIG. 14;

[Explanation of symbols]

A _1, A _11: extrusion port B _1, B _2: extrusion D _1, D _11: first die (base molding die) M _1: first raw material (non-foaming) M _2: second Raw material (foaming)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B29C 47/00-47/96

Claims (1)

(57) [Claims] 1. A surface layer portion of an extruded product continuously extruded from an extrusion molding opening of a basic molding die is molded from a plurality of types of molding materials having different foaming rates, and a molding portion of each molding material is exposed on the surface. Forming a continuous floating pattern on the extruded product, characterized in that a portion formed by a molding material having a high foaming ratio is raised to form a continuous floating pattern on the surface of the extruded product. how to.