JP2761082B2 - Method of manufacturing gutter bend - Google Patents

Description

The present invention relates to a method for manufacturing a metal gutter bend for connecting eaves gutters at corners.

[Prior Art] Conventionally, a metal rain gutter bend is arranged so that a pair of rain gutter bend halves formed so as to be fitted to the outer surface of an eaves gutter by metal are substantially L-shaped when viewed from a plane. The connecting edges of the pair of rain gutter bent halves are connected to each other by soldering.

[Problems to be Solved by the Invention] However, there is a problem that the connection by soldering is troublesome and costly, and there is a problem that connection quality varies and the stability of the quality is poor. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above description, and an object of the present invention is to provide a method for manufacturing a gutter bend which can be easily connected and has a stable connection quality.

Means for Solving the Problems In order to achieve the above object, the method for manufacturing a gutter bend according to the present invention is a method for forming a pair of gutter bend halves 1 formed so as to fit to the outer surface of an eaves gutter with a metal. Are arranged so as to be substantially L-shaped when viewed from above, and the rising pieces raised at the connection end edges of the pair of rain gutter bent halves 1 are in contact with each other, and arc-shaped provided at the tips of the pair of rising pieces 2 respectively. Are bent so as to bend in opposite directions, and an opening having a width capable of inserting the pair of rising pieces 2 is provided in the swaging band 3 having a partially cut-out annular shape, and the swaging band 3 is raised from the opening. The caulking band 3 is arranged so as to cover the piece 2, and is opposed to the concave portion 10 of the caulking band 3 at the center of the caulking band 3 and the bent portion 9 of the rising piece 2. Stand by crushing Caulking Band 3, wherein the caulked so as to be in close contact with defeat to wrap rising piece 2.

[Operation] The caulking band 3 can be mechanically connected simply by squeezing it with a mold along the rising piece 2, so that it can be manufactured easily, can be manufactured at low cost, and has stable connection with no variation in connection. I do.

[Embodiment] A pair of rain gutter bent halves 1 are formed of metal to have a cross-sectional shape fitted to the outer surface of the eaves gutter. This gutter curved half 1
Has a bottom wall 4 at the bottom and side walls 5, 6 on both sides, and has ears 7, 8 at the upper end of the side walls 5, 6. The connection edge of the pair of rain gutter bent halves 1 is an edge inclined at 45 °, and has a rising piece 2 rising upward at the connection edge, and an arc-shaped bent portion 9 is provided at the tip of the rising piece 2. have. The caulking band 3 has a partially cut-out annular cross section and is formed by bending the whole into an arc shape. The caulking band 3 has an opening through which a pair of rising pieces 2 including a bent portion 9 can be inserted. The caulking band 3 has a concave portion 10 that is concave in an arc shape at the center. The pair of rain gutter bending halves 1 are arranged so as to be L-shaped when viewed from a plane, and the connection edges are caulked and connected by the caulking band 3.
The connecting dies are formed as shown in FIGS. An upper die 12 is integrally provided on the lower surface of the movable base 11, and the upper die 12 is formed in a shape that follows a cross-sectional shape along the outer surface of the bent half gutter 1. A lower mold 14 is provided on the fixed base 13 so as to be movable up and down, and the lower mold 14 is formed in a shape along the inner surface of the rain gutter bending half 1. A lower mold 14 is supported on a fixed base 13 by a lower mold support spring 15, and the lower mold 14 is usually
Is floating on the fixed base 13, and the lower die 14 is pushed downward against the lower die supporting spring 15, so that the lower die 14 descends onto the fixed base 13. A gap 16 having the same width as the cross-sectional width of the caulking band 3 is provided at a corner of the lower die 14, and a bottom caulking cone 17 and side caulking cones 18 a and 18 b on both sides are arranged in the gap 16. Bottom caulking cone 17
The caulking cone biasing spring 27 is supported so as to float on the fixed base 13, and the side caulked cones 18 a, 18 b on both sides are slidable left and right on the fixed base 13 and the side caulked cones 18 a, 18 b
Are urged to approach. Bottom caulking cone 17 and side caulking cone with bottom caulking cone 17 lowered
The shape of the outer surface formed by 18a and 18b is the same as that of the lower die 14.
The end surface of the gap 16 of the lower die 14 serves as a guide surface 19 for preventing the swaging band 3 from spreading and deforming. The caulking connection of the pair of rain gutter bending halves 1 with the caulking band 3 is performed as follows. The caulking band 3 is set in the gap 16 of the lower mold 14, the pair of rain gutter bent halves 1 is turned upside down, and set on the lower mold 14, and the rising pieces 2 are positioned in the gap 16 and a pair of rising pieces are formed. 2 is abutted. In this state, the swaging band 3 is arranged along the rising piece 2 as shown in FIGS. 2 and 4 (a). And upper mold
Lower 12 to close the mold. Lower the upper mold 12 and lower the upper mold
12 and the lower mold 14 coincide with each other, and the rain gutter bending half 1 is sandwiched between the upper mold 12 and the lower mold 14, and further descends to lower the mold 14.
Is lowered together with the upper mold 12, and the bottom caulking cone 17 and the upper mold 12
The caulking band 3 at the bottom is crushed in between, and the lower caulking cone 17 is lowered together with the upper mold 12 and the lower mold 14 by further lowering the upper mold 12, and the side caulking cones 18a, 18b
The side of the swaging band 3 is swaged between the upper die 12 and the upper die 12. As a result, as shown in FIG. 4 (b), the end face 3a of the swaging band 3 comes into close contact with the inner surface of the rain gutter bent half 1, the rising piece 2 overlaps the end face 3a, and the swaging band 3 The central surface 3b closely adheres to and overlaps the rising piece 2. In this manner, the pair of rain gutter bending halves 1 are waterproofly connected by the swaging band 3 to form the rain gutter bending A. The upper pieces 7a, 8a of the ears 7, 8 on both sides of the gutter bend A are connected to a pair of gutter bend halves 1 and then horizontally bent as shown in FIG. At the upper end of the outer corner of the gutter bend A, the joining pieces 20 and 21 at the ends of the respective gutter halves 1 are horizontally laid down and overlap each other, and the caulked portion 22 is caulked and joined. The pair of rain gutter bending halves 1 reinforced by the joining of the joining pieces 20 and 21
Is more firmly connected. Eave gutter holding members 24 are attached to the inner surfaces of both ends of the rain gutter bend A.
Thus, an eave gutter end insertion gap 25 is formed. At both ends of the gutter bend A, the mounting piece 26 is extended upward from the tip of the upper piece 7a of the ear part 7, and after the eaves gutter is connected, the mounting piece 26 is connected.
Can be bent to hold the eaves gutter.

[Effects of the Invention] As described above, the present invention arranges a pair of rain gutter bent halves so as to be substantially L-shaped when viewed from a plane, and rises at a connection edge of the pair of rain gutter bent halves. The pieces come into contact with each other and the arc-shaped bent portions provided at the tips of the pair of rising pieces are opposed to each other so as to bend in opposite directions,
An opening having a width that allows the pair of rising pieces to be inserted is provided in the caulking band having a partially notched oval cross section, and the caulking band is arranged so as to cover the rising piece from the opening, and a concave portion at the center of the caulking band is provided. Since the bent concave portion and the bent portion of the rising piece are opposed to each other, the caulking band is pressed down with a mold and crushed so that the rising piece is folded back and the caulking band is caulked so that the band is in close contact. Can be mechanically connected by caulking the gutter half of the gutter, and the workability of the connection is good and it can be manufactured at a low cost, and the quality of the connection is uniform due to the connection by caulking The connection can be made with stable quality, and the band is raised along the rising piece with the pair of rising pieces in contact with each other. By simply placing it over the piece and pressing it from above and below with a mold, the rising piece can be folded down and crimped so that the caulking band adheres tightly, and a pair of rain gutter bent halves Can be easily connected by caulking even if the connecting portion is not linear.

[Brief description of the drawings]

FIGS. 1 (a) and 1 (b) are a plan view and a front view of a bent gutter obtained by the manufacturing method of the present invention, and FIG. 1 (c) is a cross-sectional view taken along line CC of FIG. 1 (a). FIG. 1 (d) is FIG. 1 (a)
1 (e) is a sectional view taken along line DD of FIG.
1 (f) is a sectional view taken along line FF of FIG. 1 (a), FIG. 1 (g) is a line GG of FIG. 1 (a), and FIG. ) Is a cross-sectional view taken along the line H-H in FIG. 1 (a), FIG. 2 is a front view of a state in which a caulking band is arranged along a rising piece of the bent half of the rain gutter, and FIG. FIG. 3 (b) is a perspective view showing a gap of a lower die, and FIGS. 4 (a) and 4 (b) are cross-sectional views showing a state where the swaging band is swaged. 1 is a gutter bent half,
2 is a rising piece and 3 is a swage band.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁶ , DB name) B21D 39/02 E04D 13/068 502

Claims (1)

(57) [Claims] 1. A pair of rain gutter bent halves formed of metal so as to fit on the outer surface of an eave gutter so as to be substantially L-shaped when viewed from a plane. The rising pieces raised at the connection end edges of the pair abut against each other, and the arc-shaped bent portions provided at the tips of the pair of rising pieces are opposed to each other so as to bend in opposite directions. The band is provided with an opening having a width into which the pair of rising pieces can be inserted, and the caulking band is disposed along the rising piece so as to cover the rising piece from the opening. The creeping band is characterized by pressing the staking band with a mold and squeezing it so that the rising piece is folded back and swaging so that the staking band is in close contact. The method of production.