JPS62137128A - Production of expanded metal - Google Patents

Abstract

PURPOSE:To expand a plate-like metal blank by pulling it to the right and left and to obtain the expanded metal having large expanding width by arranging in zigzags plural longitudinal slots in three lines in the upper and lower, right and left directions of the late-like metal blank having reinforcing part at both sides and by linking the middle of each longitudinal slot at both sides with a horizontal slot. CONSTITUTION:A plate-like metal blank 11 is composed of plural angular tube like reinforcing parts 12 which are in parallel each other and the linking wall part 13 which links integrally at the medium part of the thickness thereof. Two projecting bars 14 extending to the upper and lower directions at the prescribed intervals in the right and left directions respectively are provided on the upper and lower both faces of the linking wall part 13, then. The slot line in three rows is then made by forming plural longitudinal slots 15, 16, 17 between the mutual projecting bars 14 and between the projecting bar 14 and angular tube like reinforcing part 12. In this case, the longitudinal slots 16, 17 at the right and left both sides and the longitudinal slot 15 at the center are made in zigzags in the upper and lower directions. The longitudinal slot 16 and 17 are connected by forming a horizontal slot 18 between the mutual intermediate part in the length of the longitudinal slots 16, 17. Thereafter, the expanded metal 1 is made by enlarging the blank 11 by pulling it in the right and left directions.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method of manufacturing expanded metal used for partitions, fences, gates, lattices, etc.

In this specification, up and down, left and right refer to Figures 1 and 3.
Let's say facing the figure.

Conventional technology and its problems Conventionally, expanded metal has been made by forming a large number of vertical slots in a staggered arrangement in a plate-shaped metal material, and then pulling and expanding this material in the left-right direction. However, with conventional manufacturing methods, it was not possible to increase the width of the stretched metal, and it was not possible to manufacture wide expanded metal.

An object of the present invention is to provide a method that can expand the width of expanded metal in the left and right direction compared to conventional methods, and can manufacture expanded metal with a wider width than conventional methods. .

In the following description, the term "aluminum" includes not only pure aluminum but also aluminum alloys.

Means for Solving the Problems The method for manufacturing expanded metal according to the present invention includes slots consisting of a plurality of vertical slots spaced apart from each other at predetermined intervals in the vertical direction in a plate-shaped metal material having reinforcing portions on both left and right edges. A plurality of sets of rows are formed at predetermined intervals in the left and right direction, each set of three rows, and the vertical slots of the left and right slot rows of each set and the vertical slots of the central slot row are arranged in a staggered manner in the vertical direction, The feature is that a horizontal slot is formed between the intermediate portions of the length of each vertical slot in the left and right slot rows of each set to connect the vertical slots, and finally the plate metal material is stretched in the left and right direction. It is something to do.

In the above, the plate metal materials include aluminum,
Materials made from iron, copper, iron alloys, copper alloys, etc. are used.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 4 shows an aluminum expanded metal manufactured by the method of the present invention.

The expanded metal (1) has a plurality of hollow reinforcing parts (2) arranged at predetermined intervals in the left-right direction and extending in the vertical direction and having a vertically rectangular cross section, and adjacent reinforcing parts (2).
) a plurality of 6s provided at predetermined intervals in the vertical direction between
It consists of a square mesh (3). Reinforced parts on both left and right edges (2
) are formed with screw holes (not shown) that will be used for later frame processing. Hexagonal mesh (3)
The left and right vertical straight parts (4) parallel to each other are provided in one direction with the reinforcing part (2), and both vertical straight parts (4) are parallel to each other.
, (4), a pair of left and right upper inclined straight portions (5), (5) extending from the upper ends toward the other side, and left and right vertical straight portions (4), (4) extending toward each other from the lower ends. A pair of left and right lower inclined straight parts extending downward to the sides (6), (6
).

Next, a method for manufacturing the expanded metal (1) will be explained with reference to FIGS. 1 to 3.

First, a plurality of rectangular cylindrical reinforcing parts (12) parallel to each other extending in the vertical direction, and a connecting wall part ( 13)
Plate metal material made of extruded aluminum material (1
Prepare 1). The square tubular reinforcing part (12) has a hollow shape with a vertically rectangular cross section, and the square tubular reinforcing part (12) has a vertically rectangular cross section.
When the expanded metal (1) is manufactured from 11), it becomes the reinforcing part (2). On both the upper and lower surfaces of the connecting wall portion (13), two protrusions (
14) is provided. Then, the protrusions (14
) and between the protrusions (14) and the rectangular cylindrical reinforcement (12).
), a plurality of vertical slots (15), (16), and (17) are formed at predetermined intervals in the vertical direction, thereby creating three rows of slots extending in the vertical direction.

The vertical slots (16, 17) in the left and right slot rows in each connecting wall (13) and the vertical slots (15) in the central slot row are staggered in the vertical direction. Furthermore, a horizontal slot (18) is formed between the intermediate portions of the lengths of the vertical slots (16) and (17) of the left and right slot rows in each connecting wall portion (13).
and the vertical slot (17) are connected.

After that, if this material (11) is expanded by pulling it in the left-right direction over its entire length, the protrusions (14) of each connecting wall (13) will be expanded.
) (14) is deformed to form left and right vertical straight parts (4
), upper inclined straight part (5) and lower inclined straight part (6)
The vertical slots (15) in the central slot row are expanded to form a hexagonal mesh (3).

The square tubular reinforcing portion (12) then becomes the reinforcing portion (2).

Further, the horizontal slot (18) is also expanded in the vertical direction.

If the horizontal slot (18) is not formed, the material (10
) when expanding it in the left and right direction, the hexagonal mesh (
The angle between the upper inclined straight parts (5) and the lower inclined straight parts (6) forming the horizontal slot (1
8), and as a result, the spacing between adjacent reinforcing portions (2) becomes smaller.

In the above embodiment, the rectangular cylindrical reinforcing portions (
12), but this is not necessarily required.

Effects of the Invention The method for manufacturing expanded metal according to the present invention includes three rows of slots each consisting of a plurality of vertical slots spaced apart from each other at a predetermined interval in the vertical direction on a plate metal material having reinforcing portions on both left and right edges. A plurality of sets are formed at predetermined intervals in the left and right direction as one set, and the vertical slots of the left and right slot rows of each set and the vertical slots of the center slot row are arranged staggered in the vertical direction, and the left and right sides of each set are A horizontal slot l- is formed between the lengthwise intermediate portions of each vertical slot in the slot row to connect the vertical slots, and finally the plate-shaped metal material is stretched in the left-right direction. Because of this, the width of the tensile expansion can be increased compared to conventional methods for manufacturing expanded metal, making it possible to manufacture wide expanded metal. Furthermore, the expanded metal manufactured by the method of the present invention has a more unique shape than conventional metals due to the presence of horizontal slots formed in the material. In general, since the expanded metal manufactured by the method of the present invention has reinforcing portions on both left and right edges, the framing process etc. can be easily performed by utilizing these reinforcing portions.

[Brief explanation of drawings]

Fig. 1 is a front view of a plate metal material used in the method according to the present invention, Fig. 2 is a partially enlarged view of Fig. 1, Fig. 3 is an enlarged sectional view taken along the line FIG. 4 is a front view of an expanded metal manufactured by the method of the present invention. (11)... Plate metal material, (12)... Rectangular cylindrical reinforcement, (15) (16) (17)... Vertical slot, (
18)...Horizontal slot. 4 people other than the above

Claims (1)

[Claims] A plurality of slot rows each consisting of a plurality of vertical slots spaced at predetermined intervals in the vertical direction are formed at predetermined intervals in the left and right direction, each set consisting of three rows, on a plate-shaped metal material having reinforcing portions on both left and right edges; Vertical slots in the slot rows on both the left and right sides of each set,
The vertical slots in the central slot row are arranged in a staggered manner in the vertical direction, and horizontal slots are formed between the intermediate lengths of the vertical slots in the left and right slot rows of each set to connect the vertical slots. , an expanded metal manufacturing method characterized by finally stretching and expanding the sheet metal material in the left and right direction.