JPS58199626A - Elbow - Google Patents

Abstract

PURPOSE:To obtain an elbow which has no joint, is steep in its angle and excellent in its strength, by executing hydraulic pressure bulge working in a forming die, as to a metallic blank pipe which is roughly curved in advance. CONSTITUTION:A metallic blank pipe 8 is roughly curved in advance, and is contained in a forming die 7. Subsequently, pressurized oil is supplied from an oil port 14, the blank pipe 8 is projected into a forming hole 9, and hydraulic pressure bulge working is executed. In this way, the blank pipe 8 is formed to a steep angle elbow 5 having a corner part 6. Said elbow 5 has no joint and is excellent in its strength.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elbow suitable for use in residential rain gutters and the like.

Conventionally, for elbows that have been used for residential rain gutters, etc., molded handles have been used. With such prior art, the service life is short due to intense sunlight, wind damage, chemical components in rainwater, etc., and the scissor performance is poor. In addition, it is strongly hoped that elbows such as these with handle and fat carvings will be exhibited on a large scale throughout the city.

In the prior art of pulverizing such ash, the ash was carved using a kabura, and the tsuzono map is shown in Figure 1, and the 5-piece surface view is shown in Figure 2. With such prior art,
The copper plates 1.2 are all pressed and softened to form a roughly semi-circular shape, and are joined at a joint 3. In such advanced technology, by press pattern processing of 111.2i and by the presence of seam 3, the moon or 4
It is only possible to make the -rate radius smaller. Once upon a time,
As mentioned in IJ, the total length is longer compared to the elbow made of paulownia molded material, which makes it difficult to install piping in the dark in narrow spaces. In addition, the processing is poor, the cost is inferior, and the dimensional accuracy is poor.

Note that if you try to bend a piece without tleF or i as shown in Figure 1, wrinkles or swells will occur on the site, making it impossible to obtain a piece with a good shape. It is an object of the present invention to provide an elbow that is easy to manufacture, is curved, and is curved at a steep angle.

In addition, with such a prior art value, there are 3 seams, so the rusting state of the en-yoi is evened out, and the outer part has an original block pattern, which increases the decorative value of the piece. In addition, rust has progressed on the lever sister 3, and the strength has decreased by 1, and the water
Another object of the present invention is to provide a decorative material which is easy to apply and which is also strong.

Hereinafter, the implementation of the present invention will be explained through one song.

Figure 3 is a front view of the elbow used in the present invention, and Figure 4 is its left side view. It is formed by pressure bulge processing, and its corner h6 is formed by oil and angle h0. This is a side view of the stone. A straight cylindrical seamless copper tube 8 is roughly bent in advance and housed in a forming hole 9 of a forming mold 7. A portion of the raw tube 8 is added to the mold 7 by bolts between the 7 langes 1O and the closing body 11. 3, the other end of the tube 8 is connected to the flange 12 and the base body 13 by one bolt. This L? The base body 13 is provided with a narrow opening 14 through which pressure oil is supplied. In the vicinity of the outer chest of the closed IIi 13, an air vent 15 is formed.This air vent 1st is the air vent 1st, which is joined by the outer area of the system v8 and the molded sushi 9, and the le type 7 is , as shown in the 6th evil, the stones are symmetrically formed δ
The thread tube 8 is housed in the double-shaped hole 9 that opposes the two molds 7a and 7b, and the mold 7a is opened.

7b Furthermore, molds 7a and 7b rotate into Japanese tiles.
To prevent this, 1I8J is redundant by Knockin 21.22.

When pressure oil is supplied through the narrow hole 14, the raw pipe 8 is pushed out into the J forming hole 9, and hydraulic bulge processing is performed.

The living air within the space defined by the outer circumferential direction of the thread tube 8 and the topographic holes 9 is discharged from the living air vent [J15].

In this way, the woodwind 8r was processed into the shape shown by the one-point edge in FIG.
It is formed into a steeply angled elbow 5.

In addition, in Shangsha's implementation 10, t, Taku, 7a, 7b and k
jii! &K l l · 13 rotation t-hold, it is best to hold this in a pressure cylinder etc. during molding. To! 7a, 7b and t#J't#; body it
, +3' is applied with a pressure of K1mV by the cylinder, and when the workpiece is released from the shield, the temporarily retracted portion of each is released so that the workpiece can be quickly installed and removed (it is possible to do so by rubbing). Needless to say, it's worth it.

In the present invention, the elbow may be made of gold other than copper, for example gold such as aluminum. The shape 1fc may have other polygonal shadows.

As described above, according to the present invention, a roughly pre-curved yarn tube' (f) is housed in a forming mold, and a hydraulic bulge process is performed by applying a Honjo T to the yarn tube and causing the tube to bulge. So,
A seamless elbow is formed, and the chest has a steep angle.As a result, the neck length is short, making piping easier in narrow spaces. Also, all of them are made of 1M4, so Ii! The armpits are excellent. (I don't like it, so I mentioned it in relation to Figures 1 and 2.) Like the fc former Nakuga, Midoriyo's tip axis state is inner compared to the joint sister, In addition, it is possible to attach solid lumps to the outside area, improving the physical strength of the button, and eliminating problems such as problems such as the progress of mackerel in the frame, which reduces strength and causes water stains. Rather, it's the inner part of the elbow or a rainbow.
Figure 1 is a front view of the advanced technology, Figure 2 is a five-dimensional diagram of the advanced technology marked in Figure 1, and Figure 3 a. Front view 1 of one embodiment of the "Main Party Small", Fig. 4 is a left axis view of the embodiment with a 3rd mark, Fig. 5 is a side view of the mold 7], and Fig. 6 is a view of the completed Le-shaped 70-stone plane
Get on the plane.

5... Elbow, b, 16... Corner hole, 7... Molding mold, 8... Thread tube, 9... Molding hole, 11.13... Closed base body, 14... Narrow opening , 15... Air Vent Agent Patent Attorney Kei Nishi Part Figure 1 Figure 3 Figure 2 Figure 4

Claims (1)

[Claims] Roughly pre-curved gold M woodwind? il- An elbow characterized by being housed in a mold and applying hydraulic pressure inside the raw pipe to heat the wood pipe and perform a hydraulic bulge process.