JPS58219030A - Manufacture of gutter - Google Patents

Abstract

PURPOSE:To obtain an angular edge part having reinforcing effect, by a method wherein the raw synthetic resin sheet of which the lateral central part is inserted with metal sheet of broad width for main body and of which both side parts of said metal sheet are inserted with metal sheet of narrow width for edge part, is in gutter shape bent at the metal sheet part for main body and further bent in U-shaped form at the part without the metal sheet. CONSTITUTION:The raw material plate 4 for gutter is formed by inserting the metal sheet 2 of broad width for main body into the lateral central part of synthetic resin plate 1 and by inserting the metal sheets 3 and 3 of narrow width for edge part into the parts on both sides of said metal sheet 2. The said raw material plate 4 is in gutter shape bent at the metal sheet 2 part for main body to form the main body 5 of gutter, and at the same time the edge parts on lateral both sides of above-mentioned raw material plate 4 are in U-shape bent at the part having no metal sheet to form the angular edge part 4. The bent tip of said edge part 6 is bent upwards and the upward bent piece 7 is fixed to the outer surface of gutter main body 5. Then, the gutter having angular edge part can be obtained without injuring the reinforcing effect.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing an eaves gutter in which a metal plate is inserted.

BACKGROUND ART Various types of eaves gutters in which metal plates (8) such as copper plates are inserted have been provided because of their excellent strength. This is a flat synthetic resin plate (9
) Insert K metal plate (8) to make raw plate for eaves gutter (10)
and is formed into an eaves gutter shape as shown in FIG.

However, since the main body part of the eaves gutter has a simple shape, it can be relatively easily formed even if it is a blank plate for eaves gutter (lO) with a metal plate (8) inserted.
The part II) has a complicated shape and has to be molded finely, resulting in poor moldability.In particular, it is difficult to form the corners and shaped ears (0) because the metal plate (8) is inserted. It was difficult to form an angular selvage (I) in which the bent portion was inevitably rounded and squared. The present invention was made in view of the above points, and The object of the present invention is to provide a method for manufacturing an eaves gutter with a metal plate inserted, which can easily form an accurately square edge without impairing the reinforcing effect.

In the invention, a medium wide metal plate for the main body (2) is inserted in the central part in the middle direction of the synthetic resin plate fx over the entire length in the longitudinal direction, and the synthetic resin plate is supported on both sides of the metal plate for the main body (2). F
1) Metal plate for the ears with a middle part at both ends in the middle direction (3) (3)
A blank plate for eaves gutter (4) is formed by inserting it over the entire length in the longitudinal direction, and the blank plate for eaves gutter (4) is bent into the shape of eaves gutter at the main body and the metal plate (2). When the eaves gutter main body (5) is formed, both ends of the eaves gutter blank plate (4) in the middle direction are aligned with the main body metal plate (2) and the ear metal plate (3).
1 (A part other than 31 is bent in a U-shape on the outside of the eaves gutter main body (5) to form a square ear part (6), and this square ear part (6
) bend the bent end of this upwardly bent piece (
The above object has been achieved by a method of manufacturing an eaves gutter characterized by stacking and fixing the eaves gutter 7) on the outer surface of the eaves gutter body (6), and the present invention will be described in detail below with reference to examples.
″′: Figure 2 shows the base plate for eaves gutters (4) used in the present invention, which is made of a thermoplastic hard synthetic resin plate such as hard polyvinyl chloride.
When extruding 1), use a wide metal plate for the main body (2)
It is formed by inserting a narrow metal plate +31 for an ear portion over the entire length in the longitudinal direction. A thin strip steel plate or the like is used as the main body metal plate (2) and the ear metal plate (3). The above-mentioned raw plate for eaves gutter (4) is 0-leaf-shaped in the shape of an eave at the metal plate for the main body (2) to form the eave gutter main body (6), and then the eaves gutter body (6) is made as shown in the drawing (a). By bending both end portions of the gutter blank plate (4) at parts other than the main body metal plate (2) and the ear metal plate (3) to form square ears (6). A square eaves gutter as shown in Figure 3 is obtained. At this time, when forming the ear part (6), the bending process is too busy if the synthetic resin plate f1) is bent in the part where the metal plate for the main body (2) or the metal plate for the ear part (3) is not inserted. This allows the bending process to be easily performed by applying heat, etc., and since it does not involve bending the main body metal plate (2) or the ear metal plate +31, it can be accurately squared without being rounded. It is possible to perform Kfr bending processing. Also, here, the portion of the bent end of the ear (6) where the metal plate for the ear (3) is not inserted is bent upward, and this upwardly bent piece (7) is inserted into the eaves gutter body ( 6) is fixed to the upper outer surface by adhesion with adhesive or welding by high frequency heating. FIG. 4(b) shows another embodiment, in which the bending line segment at the ear (6) is made of a soft thermoplastic resin such as soft polyvinyl chloride, and the ear (6) is bent. It is designed to make it easier.

In this embodiment, three metal plates (3) for the ears are inserted into each side end of the synthetic resin plate f1+, and the ears (6) are inserted.
), one metal plate (3) for the ears is present on each of the upper, lower and vertical pieces.

In addition, in the present invention, as shown in FIGS. 5(a) and 5(b), by forming the base plate (4) for the eaves gutter using the metal plate (2) for the main body having various medium dimensions, It is possible to mold eaves gutters of various sizes.

As described above, in the present invention, both ends in the middle direction of the blank plate for eaves gutter formed by inserting the metal plate for the main body and the metal plate for the ears into the synthetic resin plate are inserted into the metal plate for the main body. Since the part other than the metal plate for the ear part is bent to form a square ear part, the synthetic resin plate part can be easily bent by applying heat, and the metal plate for the main body can be easily bent. Since it does not involve bending the plate or the metal plate for the ears, it is possible to accurately bend it into a square shape without making it round. In addition, a metal plate for the ears is inserted into the ears, and the bent ends of the ears are bent upwards, and the pieces are stacked and fixed on the outer surface of the eaves gutter body. Since a double overlapping portion is formed in the ear portion, the strength of the ear portion is high, and the reinforcing effect of the ear portion does not deteriorate in any way.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are a partially cutaway perspective view and a sectional view of a conventional example, Figure 2 is a partially cutaway perspective view of a raw plate for eaves gutters according to the present invention, and Figure 3 is an eaves manufactured from the above. Cross-sectional view of the gutter, Figure 4 (
a) (b) is an enlarged sectional view of the ear part of the eaves gutter, Fig. 5 (a)
(b) is a sectional view showing a blank plate for eaves gutters. +11 is a synthetic apple/fat plate, (2) is a metal plate for the main body, (3)
(6) is the metal plate for the ears, (6) is the eaves gutter body, (6) is the square ear, and (7) is the upwardly bent piece. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 (b) Figure 2 3 2 3 Figure 3

Claims (1)

[Claims] (1) Insert a medium-wide metal plate for the main body over the entire length in the longitudinal direction in the central part of the synthetic resin plate, and insert ears in between at both ends of the synthetic resin plate in the middle direction on both sides of the main body metal plate. A blank plate for the eaves gutter is formed by inserting the metal plate for the part along the entire length in the longitudinal direction, and the blank plate for the eaves gutter is bent into the shape of the eaves gutter at the metal plate for the main body to form the eaves gutter main body. At the same time, both ends of the blank plate for the eaves gutter are bent in a U-shape to the outside of the eaves gutter body using parts other than the metal plate for the main body and the metal plate for the ears to form square ears. A method for manufacturing an eaves gutter, characterized in that the bent tip of the rectangular ear portion is bent upward, and the upwardly bent piece is stacked and fixed on the outer surface of the eaves gutter body.