JPH06226331A - Manufacture of wire width shape by extrusion - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] A wide profile having a hollow portion 1 that exceeds the container diameter is easily manufactured using a normal extruder. [Structure] A hollow member 1 and a single plate portion 2 are provided in the width direction, and a shape member bent in the width direction so as to be included in a size range of a container diameter in the single plate portion 2 is extruded, and then, A method for producing a wide profile by extrusion molding, which comprises expanding the bent single plate portion 2 of the bent extrusion profile.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a wide profile material such as aluminum or aluminum alloy by extrusion molding.

[0002]

2. Description of the Related Art Conventionally, in extrusion molding of an aluminum alloy shaped material in which a billet inserted into a container of an extruder is extruded from a die into a predetermined cross-sectional shape by high pressure, the cross-sectional shape and dimensions of the extruded shape material are However, it is limited within the range of the container diameter depending on the capacity of the extruder.Therefore, in the extrusion molding of wide profile that exceeds the range of the container diameter, it is necessary to increase the size of the container. There is a disadvantage that the entire extruder has to be large and high capacity without
Therefore, there has been a strong demand for the development of a new method for forming a wide profile using an ordinary extruder, and the request is particularly strong for a method for producing a wide profile having a hollow portion often used for building materials and the like.

[0003]

The first invention of the present application aims to provide a method for manufacturing a wide profile having a hollow portion by extrusion molding, and the second invention of the present application facilitates handling after extrusion. An object of the present invention is to provide a method for manufacturing a wide profile by extrusion molding.

[0004]

As a means for solving the above problems, the first invention of the present application has a hollow portion and a single plate portion in the width direction, and the single plate portion is included within the size range of the container diameter. Extrude a shape bent in the width direction, then,
Expanding the bent single plate portion of the bent extruded profile, proposing a method for producing a wide profile by extrusion molding,

In the second invention of the present application, a tubular shaped member which is bent in the width direction and closed so as to be included in the size range of the container diameter is extruded, and then the tubular extruded shaped member is extruded. The present invention proposes a method for manufacturing a wide profile by extrusion molding, which comprises cutting and expanding in the direction of the generatrix.

The "cylindrical shape" in the second aspect of the invention includes cylindrical shapes such as cylinders, oblong cylinders, square cylinders, polygonal cylinders, and other various cross-sectional shapes. Embodiments of the present invention will be described below with reference to the drawings.

[0007]

EXAMPLE First, as shown in FIG. 1 (a), a die hole (M) formed in a die (D) of a container (C) is a hollow portion forming hole (M) corresponding to two hollow portions. _1), (M ₁₎ and corresponding to the veneer part veneer portion forming holes (M ₂₎ has, they are single-plate portion forming the hole to fall within the size range of container diameters (M ₂₎ Is bent in half at.

When the aluminum alloy billet is extruded using the container (C) and the die (D), a rectangular hollow portion (1) in cross section, as shown in FIG.
A bent extruded profile (B) with a hollow portion, which has (1) and a single plate portion (2) and is formed by folding the single plate portion (2) in an arc shape, is extruded.

Next, the bent extruded profile (B) is formed by expanding the bent single plate part (2) into a flat wide part (S) with a hollow portion as shown in FIG. . The expansion is preferably performed after the bent extruded profile (B) is subjected to solution treatment and naturally aged.

For the expanding process, a roll form method,
A stretch bender method, a press method, etc. are appropriately used.

Further, in order to prevent the single plate portion (2) from being cracked or wrinkled due to the expanding process, it is preferable to partially provide a thick portion (3) at the bent portion as shown in FIG.

After the above-mentioned expansion process, the wide profile (S) with a hollow portion is heat-treated (cured).

FIG. 3 shows that a hollow chamber is further added to the wide profile (S) with a hollow portion obtained by the method for producing a wide profile of FIGS. 1 (a), (b) and (c). In extrusion molding, stepped portions (4a) and (4a) are formed at the corners of the hollow portions (1a) and (1a) that are adjacent to each other with the single plate portion (2a) interposed therebetween, and are formed flat by expansion processing. With respect to the wide section material with a hollow part, the both end portions of the cover plate (5a) are placed on the both step portions (4a) and (4a) and joined by welding, bonding, screwing, riveting, etc. It is formed into a wide profile (Sa) with a cover hollow chamber in which a hollow chamber (6a) is formed between the single plate portion (2a).

As another example of joining the cover plates, as shown in FIG.
Are adjacent hollow portions (1b), step portions (4b), (4b) at the corner portions of the adjacent hollow portions (1b), and locking grooves (7b) at the corners of the step portions,
(7b) is formed, and locking ridges (8b), (8) formed by bending the cover plate (5b) at both ends thereof in an L shape.
b) is provided, and the locking ridges (8b) and (8b) of the cover plate are provided.
Is attached to the locking grooves (7b) and (7b) with an adhesive.

FIG. 5 shows another method for manufacturing a wide profile material. First, a single plate (2c) as shown in FIG. 1 (a) is bent in the width direction by an extruder to form a closed cylindrical shape. A tubular extruded shape (Bc) is formed by extruding protrusions (1c) having a T-shaped cross section on the inner peripheral surface of the plate (2c) at regular intervals.

Next, the veneer (2c) of the tubular extruded shape (Bc) is cut along a line in the generatrix direction, and the cut veneer is spread flat as shown in FIG. It is formed into a wide profile (Sc) with a ridge. The expanding method, processing time, etc. are substantially the same as those in FIG.

After the expansion processing, heat treatment is performed.

FIG. 6 shows a structure in which a hollow chamber is further added to the wide profile material (Sc) obtained by the wide profile material manufacturing method of FIGS. 5 (a) and (b), and each wide cover plate (5d) is provided. Ridge (1
d) The hollow chamber (6d) ...
To form. The method of joining the cover plates (5d) may be performed according to FIG.

FIG. 7 shows another embodiment of the manufacturing method of FIG.
As shown in FIG. 4 (a), the extruder has alternating hollow portions (1e) ... and single plate portions (2e) ..., and each single plate portion (2e) ... is turned in an arc shape in the width direction. Cylindrical extruded shape material (Be) with a hollow portion that is bent to close the entire body and has a substantially cylindrical shape
Is extruded.

Next, one of the single plate portions (2e) of the tubular extruded shape material (Be) is cut in the generatrix direction, and each single plate portion (2) is cut.
e) are spread flat as shown in FIG. 8B to form a wide profile member (Se) with a hollow portion.

FIG. 8 shows a structure in which a hollow chamber is further added to the wide profile member (Se) with a hollow portion obtained by the method of FIGS. 7 (a) and 7 (b), and sandwiches the single plate portion (2f). In each of the hollow portions (1f) (1f), ...
f) The two ends of each of the ... are joined, whereby the single plate part (2
f) is formed with the cover hollow chamber wide hollow member (Sf) in which the hollow chambers (6f) are formed. The cover plate (5
The joining of f) ... may be performed by an appropriate method according to FIG.

In the manufacturing method shown in FIGS. 5, 6, 7, and 8 above, since the tubular extruded shape extruded from the extruder is tubular, it cannot be transferred forward from the die or conveyed to the next step. Easy to do.

[0023]

According to the method for producing a wide profile by extrusion molding of the first invention of the present application, even a profile with a hollow portion having a width far exceeding the container diameter of the extruder is bent at its single plate portion. Thereby, it can be easily extrusion-molded by an ordinary extruder, and after extrusion, since only the bent single plate portion needs to be expanded, the hollow portion has a shape as designed,
It is possible to obtain a product having a size, and it is possible to meet the demand for a wide profile with a hollow portion which is often used for building materials and the like.

According to the method for producing a wide profile by extrusion molding of the second invention of the present application, even a wide profile that far exceeds the container diameter of the extruder can be easily extrusion-molded by a normal extruder. Moreover, since the shape is extruded in a tubular shape from the extruder, not only the extrusion balance (extrudability) of the extruder is good, but also the extrusion shape is transferred from the die to the front, and the extrusion shape for the next process. This facilitates the handling of the extruded shape in the transportation of, and contributes to the efficiency of the work.

[Brief description of drawings]

FIG. 1A is a front view of a container and a die. (B) It is an end view of the bent extruded profile with a hollow part. (C) It is an end view of the wide profile with a hollow part.

FIG. 2 is an end view of a bent extruded shape member having a hollow portion in another embodiment.

FIG. 3 is an end view of a wide profile member with a cover hollow chamber according to still another embodiment.

FIG. 4 is an end view of a wide profile member with a cover hollow chamber according to another embodiment.

FIG. 5 (a) is an end view of a tubular extruded profile in another method for manufacturing a wide profile. (B) Same as above, It is an end view of a wide profile with a ridge.

6 is an end view of a wide profile with a wide cover hollow chamber in another embodiment of FIG. 5. FIG.

7 (a) is an end view of a tubular extruded profile with a hollow portion in yet another embodiment of FIG. 5. FIG. (B) It is an end view of the wide profile with a hollow part.

FIG. 8 is an end view of a wide profile member with a cover hollow chamber according to another embodiment of FIG.

[Explanation of symbols]

 1, 1a, 1b, 1e, 1f Hollow part 2, 2a, 2b, 2e, 2f Single plate part 2c Single plate 5a, 5b, 5d, 5f Cover plate 6a, 6b, 6d, 6f Hollow chamber B Bending extrusion with hollow part Profile Bc Cylindrical extruded profile with ridge Be Cylindrical extruded profile with hollow part S, Se Wide width profile with hollow part Sa, Sb, Sf Wide profile with cover hollow chamber Sc Wide profile with ridge Sd Wide width Wide profile with hollow chamber cover

Claims (5)

[Claims] 1. A shape member having a hollow portion and a single plate portion in the width direction, and bent in the width direction so as to be included in the size range of the container diameter in the single plate portion is extruded, A method of manufacturing a wide profile by extrusion molding, which comprises expanding a bent single plate portion of a bent extruded profile. 2. The wide width by extrusion molding according to claim 1, wherein a cover plate is further covered on all or part of the single plate portion after the expanding process to form a hollow chamber between the cover and the single plate portion. Manufacturing method of profile. 3. A tubular shaped material which is bent by being bent in the width direction so as to be included in the size range of the container diameter and closed, and then the tubular shaped material is cut in the generatrix direction. A method for manufacturing a wide profile by extrusion molding. 4. A tubular shape member having a hollow portion and a single plate portion in the width direction and being bent and closed in the width direction so as to be included in the size range of the container diameter in the single plate portion is extruded. A method for manufacturing a wide profile by extrusion molding, which comprises forming and then expanding the tubular profile by cutting in the direction of the generatrix in the curved single plate portion. 5. The extrusion molding according to claim 4, wherein a cover plate is further covered on the whole or a part of the single plate portion after the expanding process to form a hollow chamber between the cover and the single plate portion. Method for manufacturing wide profile.