JPH042331B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a method for forming a metal water collector, and more specifically, to a method for forming a water collector made of metal, and more specifically, to form a rectangular tube-shaped water collector with a decorative plate at one place on the upper end using a single metal plate. This article relates to a method for forming metal water collectors made from metal water collectors.

[Background technology]

Generally, in order to form a water collector with a metal plate that has a decorative plate protruding from one place on the upper end of the rectangular cylindrical water collector body, two or more points that have been previously formed into a predetermined shape are used. In many cases, the main body of the water collector is constructed by joining the members together by soldering, and a separately formed decorative plate is joined to the upper end of the main body by soldering or screwing. However, with this method, it is necessary to perform soldering in several places just to construct the water collector body, which increases the number of man-hours, and furthermore, the decorative body must be connected to the water collector body by soldering or screwing. Because of this, there was a problem that molding took time.

[Purpose of the invention]

The present invention has been made in view of the above points, and its main purpose is to create a water collector with a decorative plate protruding from the upper end of the rectangular tubular water collector body from a single metal plate. It is an object of the present invention to provide a method for forming a metal water collector that can be easily formed with a small number of man-hours.

[Disclosure of the invention]

In the method for forming a metal water collector according to the present invention, a flat metal blank having a protruding piece extending in the same plane from one side of the substrate is cut out, and this metal blank is bent into a cylindrical shape. A cylindrical metal tube is formed by abutting the substrates at their edges other than the side having the protrusion and joining these abutted points, and then pressurizing this metal tube from both the inside and outside of its peripheral wall to form a corner. A metal product that is formed into a projecting shape to form a rectangular cylindrical water collector body with openings at both upper and lower ends using a substrate, and pressurizes the protrusions from both the inside and outside to form a decorative plate on the upper edge of the water collector body. A method of forming a water collector is disclosed.

The present invention will be described in detail below based on embodiments shown in the figures. Water collector C obtained by the molding method of the present invention
As shown in FIG. 1c and FIG. It is formed by a protruding decorative plate 4, and an uneven pattern 6 is formed by punching out this part on the front surface of the water collector main body 3. As shown in FIG. 1a, this water collector C is made of a single metal blank A that is cut into a shape in which a protruding piece 2 extends within the same plane from the center of one long side of a rectangular substrate 1. The base plate 1 forms the water collector body 3, and the protrusion 2 forms the decorative plate 4. As shown in FIG. 1b, the metal blank A is first bent into a cylindrical shape, the short pieces of the substrate 1 are butted against each other, and the butt points X are joined by welding to form a cylindrical metal tube B. be done. Next, molds (not shown) are placed inside and outside of this metal cylinder B, and the substrate 1 in the metal cylinder B is
Then, pressurize the protrusion piece 2 with the inner surface exposed to form the substrate 1 into a rectangular tube shape, form the rectangular tube-shaped water collector main body 3 with the substrate 1, and make the protrusion piece 2 have a U-shaped planar shape. A decorative plate 4 is formed by pressure molding and protrudes from the front edge of the upper end of the water collector body 3 to the left and right side edges.
At the same time, the front surface of the water collector body 3 is stamped to create the above-mentioned uneven pattern 6, and the lower end of the water collector body 3 is used for connection with the vertical gutter. A circular connecting cylinder 5 is formed. still,
In the above embodiment, a metal blank A having a rectangular substrate 1 is bent into a cylindrical shape to form a metal cylinder B having a substantially uniform diameter vertically, and this metal cylinder B is press-formed. Although an example of creating the water collector C has been shown, the present invention is not necessarily limited to this.
For example, a metal blank with a fan-shaped substrate is bent into a cylindrical shape to form a tapered metal cylinder B with a tapered bottom end as shown in Figure 3, and from this tapered metal cylinder B, The water collector may be formed by pressure molding.

〔Effect of the invention〕

As described above, the present invention involves cutting out a flat metal blank from which protrusions extend from one side of the substrate on both sides of the same plane, and bending this metal blank into a cylindrical shape to form a cylindrical metal tube. Next, this metal tube is pressurized from both the inner and outer surfaces of its peripheral wall to form a rectangular tube shape, and the base plate forms a rectangular tube-shaped water collector body with openings at both upper and lower ends. Since the decorative plate is formed on the upper edge of the water collector body by applying pressure, the rectangular tube-shaped water collector with the decorative plate protruding from the upper end is made from a single metal plate by welding in one place. It can be easily produced by bonding and one-time pressure molding, and requires fewer man-hours, unlike conventional molding that requires many man-hours of soldering and screwing at several points. It has the advantage that metal water collectors can be easily formed.

[Brief explanation of drawings]

Figures 1a, b, and c are schematic process diagrams showing the molding process in one embodiment of the present invention, Figure 2 is a schematic front view of a water collector obtained in the same manner, and Figure 3 is a diagram of another embodiment of the present invention. It is a schematic perspective view showing a metal tube in the forming process of an example, A is a metal base plate, B is a metal tube, C is a water collector, 1 is a board|substrate, 2 is a protrusion, 3 is a water collector main body, 4
is a plaque.

Claims (1)

[Claims] 1. Cut out a flat metal plate with a protruding piece extending in the same plane from one side of the board, bend this metal plate into a cylindrical shape, and poke the board with the edge other than the side with the protruding piece. A cylindrical metal tube is formed by joining the butt points together, and then this metal tube is pressurized from both the inside and outside of the peripheral wall to form a rectangular tube shape, and the top and bottom of the rectangular tube shape are formed using a substrate. A method for forming a metal water collector, comprising forming a water collector body with both ends open, and pressurizing the protruding pieces from both the inside and outside to form a decorative plate on the upper edge of the water collector body.