JPS6018231A - Bulging device for hollow member - Google Patents

Abstract

PURPOSE:To provide an optional pattern, etc. to a tubular hollow member with a smaller-sized device by supporting the outside surface of the hollow member with a master mold provided with a recess, fitting an elastic material to the inside circumference of the hollow member and providing a means for compressing the elastic material. CONSTITUTION:A cam member 12 presses a holder 5 via cam surfaces 13, 15 toward a member P side and the recessed surfaces 2 of a pair of horizontal dies support the end P' of the member over the entire circumference. When a bed 11 descends further, a cam member 26 of a driving mechanism pushes a holder 21 to a stopper 22 side and the holder 21 pulls a rod 17. Then an elastic material 16 fitted to the inside circumference of the member is supported by backing plate 25 and is compressed in this state by the head part 19 of the rod so that the force in the direction of expanding diameter is exerted from the outside circumferential surface of the body 16 to the end P'. The part of the end P' facing a groove 30 is then expanded and is intruded in the tight contact state into the groove 30, by which an annular projecting part 31 is formed to the end P'.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for performing bulge processing on a hollow member such as an extruded aluminum member made of FiAi.

In Utility Model Application Publication No. 58-Stan, the applicant of the present invention proposes to provide a frame material for fittings, etc. with a high decorative effect by adding an uneven pattern to the surface of a hollow member through bulge processing. With the common bulge processing method, even if you want to form an uneven part in only one part (one place or multiple places) of a long hollow member (such as the material of a frame material for a fitting before cutting),
Since the entire inner circumference of the hollow member is pressurized,
Problems such as an increase in the size of the device may occur.

The present invention provides a bulge processing apparatus that solves the above problems, and is configured as follows. That is, the present invention provides an outer mold with a concave portion that supports the outer surface of a tubular hollow member, an elastic body that fits on the inner circumference of the hollow member at a portion in the longitudinal direction of the hollow member, and a mold that supports both ends of the elastic body. It is characterized by comprising a pair of support parts and a support part drive mechanism that moves the support parts and compresses the elastic body. Next, embodiments will be described with reference to the drawings.

FIG. 1 is a partially cutaway schematic front view of a processing device according to the present invention, and FIG. =1 is a schematic cross-sectional view.

In FIG. 1, a pair of horizontal molds 1 (outer molds) are provided on both left and right sides of a horizontally arranged hollow member P. Horizontal type 1 is member P
It has four faces 2 with a semicircular cross section on the facing faces, and by aligning both horizontal molds 1 as described later, both four faces 2
is adapted to fit around the entire outer periphery of the member P. Horizontal type 1 l-J: The die halter 5 on the base 3 can be accessed. One end of a guide rod 6 is fixed to a portion of the die holder 5 on the side opposite to the horizontal mold 1. The rod 1'6 extends in the opposite direction (perpendicular and horizontal direction to the member P), and is connected to the base 3.
It is slidably supported in a hole in the upper vertical column 7.

The rod 6 ) is equipped with a flange-shaped spring receiver 9 at the end opposite to the J die holder 5, and the spring receiver 9 and the column 70
A compression spring mechanism 10 is provided between them.

An elevating bed 11 is provided above the horizontal mold 1.

J pairs of cam members 12 are fixed to the bed 1 in a downwardly protruding position. The cam part A12 is provided with a cam surface 13 with an inclination of 6.1 mm (a portion near the lower end);
The end of the die holder 5 is inserted between the die holder 5 and the column 7. A 13 cam surface is attached to the die holder 5. The Goui Holter 5 is provided with a p,'Y inclined cam surface 15 that slidably contacts the cam surface 13.

In FIG. 2, only one end of the member)) is located between the transversals l of the I pair. Inside the end P' is a cylindrical elastic body 1.
6 are inserted in a substantially tight state, and a bolt-shaped rod 17 is inserted into the elastic body 16.

The rod 17 has a large diameter head 19 (elastic body support part) at one end, and the head 19 is in contact with one end of the elastic body 16 within the member P. A portion of the rod 17 opposite to the keel 19 protrudes from the end P° and the elastic body 16, and a threaded portion 20 at the tip of the protruding portion is fixed to a screw hole of the rod holder 21. The rod boulder 21 is mounted on the base 3 so as to be movable in the longitudinal direction of the rod 17. The end surface of the rod holder 21 opposite to the elastic body 17 faces the stopper 22 on the base a, and the rod holder 21
A compression spring mechanism 23 is provided between the stopper 22 and the stopper 22 .

An abutment plate 25 (elastic body support part) is fixed on the base 3 between the horizontal mold 1 and the rod holder 21. Toban 2
5 is in contact with the end P" and the end surface of the elastic body 16, and the rod 17 is slidably fitted into the hole of the contact plate 25. Between the contact plate 25 and the holder 2I there are vertical The lower part of the extending cam member 26 (motion mechanism) is inserted.The cam member 21 is provided with an inclined cam surface 27 on the surface on the holder 21 side in the middle part, and the upper end is fixed to the bed 11.Holder 2
1 is provided with an inclined cam surface 29 which is vertically opposed to the cam surface 27.

As shown in FIG. 3, which is an enlarged partial view of FIG. 2, grooves 80 (concave portions) each having a generally semicircular shape are provided in an annular manner on the four sides 2 of the horizontal type (2). Note that the other end (not shown) and the intermediate portion of the portion IP are supported by appropriate means (not shown).

The entire processing method will be explained. In FIG. 1, when the bed 11 is lowered from the illustrated raised position to a predetermined position, the cam member I2
Then, 13. Remove the holder 5 through 15.
Pushed toward the P side, the concave surfaces 2 of the pair of horizontal molds 1 support the member end P' over the entire circumference. When the bed 11 is further lowered after the horizontal die l holds the member end IF
1g to the stopper 22 side, and the holder 21 is attached to the rod 1
Pull 7. Then, the elastic body 16 is compressed by the rod head 19 with one end supported by the contact plate 25, and a force in the direction of diameter expansion is applied from the entire outer peripheral surface of the elastic body 16 to the member end P''. As a result, the portion of the end P° facing the groove 30 extends and enters the groove 80 in a tight state, and an annular convex portion 81 is formed at the end P′ as shown in FIG.

When the above processing is completed, the bed is raised by 1 liter.

Then, the rod holder 21 in FIG.
The compressive force from the rod 17 on the elastic body 161C is released. Further, the horizontal mold 1 shown in FIG. 1 is separated from the member P by the action of the spring mechanism 10, and then the member P is removed from the elastic body 16.

The member P formed as described above can be used, for example, as a header tube for a solar heat collector as shown in FIG.

The header pipe (P) is a part to which a large number of heat collecting pipes 38 (branch pipes) to which heat collecting plates 32 are attached are connected, and an external pipe 34 is fixed to one end P' using the annular convex part 31. be done.

In addition, when used as a header pipe, the member PFi
For example, it is made of copper pipes.

The member P can also be used for a cap, which is a kind of frame material for transoms, etc., as shown in FIGS. 5 and 6. As shown in Figure 6, Kasagi (P
A joiner 36 is tightly fitted to the inner periphery of the end P" of the J). The joiner 36 is a short hollow member, and the part protruding from the end J]" is fitted with another scorching etc. By mating, Kasagi (P),! = It is designed to connect the frame crusher. Also, the joiner 36 and Kasagi (Plj) are made of extruded shapes of Fulminium. In the embodiment shown in FIG. Convex portions 87 and 88 are provided on the entire circumference or part of the joiner 36. The convex portion 38 is tightly fitted to the inner surface (concave surface) of the convex portion 37, and This prevents the joiner 86 from slipping out of the end P' or entering into the end P'.

Next, another bulge processing device will be explained. In the embodiment shown in FIG. 7 (schematic cross-sectional view), a cylindrical elastic body 16 is tightly fitted to the inner periphery of a plurality of longitudinal portions P1 and P2 of a cylindrical member P. A cylindrical spacer 4 made of iron or the like is provided between the adjacent elastic bodies 16 and between the contact plate 25 and the adjacent elastic body 16.
0 is inserted. A series of elastic bodies 16 and spacers 4
0, the rod 17 passes through the reed, and the head 1 of the rod 17
9 is in contact between the ends of the elastic body 16 furthest from the contact plate 25. In the elastic body assembly configured as described above, all the elastic bodies 16' are removed by pulling the rod 17.
It is possible to simultaneously compress the parts P1 and P2 of the member P and perform bulge processing on the parts P1 and P2.

In the embodiment shown in FIG. 8, a plurality of elastic bodies 16 are arranged in a member P with a spacer 40 sandwiched therebetween, and the elastic bodies 16 at both ends are pushed by a pair of pressers 42 from the opposite side to the spacer 40. . Also in this structure, all the elastic bodies 16 can be simultaneously compressed by the presser metal 42, and a plurality of longitudinal portions P3 and P4 of the member P can be subjected to bulge processing.

As a mechanism for driving the pusher 42 in FIG. 8 and the rod 17 in FIG. 7, a cam mechanism can be used as in the embodiment shown in FIG. 2, or other mechanisms can also be used.

By processing a member P made of an extruded aluminum profile using the apparatus shown in FIGS. 7 and 8, it is possible to form a crushed material for fittings as shown in FIGS. 9 to 20.

The part shown in FIGS. 9 and 10 has one generally rectangular surface, and a convex portion 44 is formed by bulge processing on the wall surface 481C which becomes the outer surface of the fitting. In this way, since the convex portions 44 can form a 48-wall pattern, a frame material (,1'') f with a high coaxial effect can be obtained.

When performing the t' bulge process as shown in FIGS. 9 and 10, the pressure is gf, and a mold as shown in FIG. 1081 is used. Chapter 10a
In the figure, there is a section on the surface of the holder 46 which also serves as the f type.
is supported with the wall surface 43 facing upward.

A pair of molds 47 are attached to the holder 46VC, and the molds 47Vi fit tightly into the grooves 49 on both sides of the member P to support the wall surfaces of the grooves 49. An elevating bed 50 of a brake press or other press is provided above the member P, and an engraving mold 51 is provided on the underside of the bed 50. The engraving die 51 has a concave portion (not shown) on the lower surface having a shape corresponding to the convex portion 44 in FIG. As a result, a convex portion corresponding to the concave portion of the mold 51 is formed on the wall surface 43. Furthermore, engraving type 51! -J: It can be easily manufactured by forming four parts by applying electrical discharge machining, NO machining, etc. to a thin iron plate or the like (engraved type).

Of course, the total length of the engraving mold 51 can also be made sufficiently large to correspond to the total length of the head 50. Note that the engraving mold 51 may be provided with holes (a kind of four parts) instead of the four parts described above for forming the pattern. A recess is also provided in the lower mold (holder 46),
A pattern (convex portion) can also be provided on the lower wall surface 52 of the member P.

A member P+ having a flat inclined wall surface 53 as shown in FIG.
As shown in Figure 12, it is also possible to perform a bulge process on the member P having the curved sloping wall surface 54, and to provide a pattern formed by the convex portions 44 on the inclined wall surface 58,54. Such a member P can be used as a frame for a window frame 55 as shown in FIG. 13, a frame around a decorative plate of a door, etc. Moreover, with such a picture frame, a higher design effect can be obtained compared to conventional products that do not have a pattern on the inclined wall surface.

Part 1-IP in Fig. 14 is used as the core (centre) of doors and sliding doors, and convex part 4 that forms patterns.
In addition to 4, a hole 56 that serves as a mailbox is provided in a portion.

This is the part punched out by the hole 56 bulge process, and when forming this hole 56, the punched part 5 is
It is preferable to form the groove 58 in the green of No. 7 in advance.
．． By doing so, as shown in FIG. 16, the portion 57 can be punched out accurately and easily (with a small force) with the groove 5B as the boundary.

As shown in Fig. 17, a convex portion 6° (also known as a four-dimensional part) is provided in the embossed double-breasted portion, and a convex portion 44″f can be provided on the convex portion 60 by bulge processing as shown in Fig. 18. can.

Part 1'J J' tj in Figs. The uneven portion 59 is provided by bulge processing.

In addition, a large number of decorative convex portions 44 are provided on the surface of the member P in areas other than the concavo-convex portions 59. When comparing the above-mentioned member P with the conventional product, in the conventional product only the annular uneven portion 59 is provided by drawing process (spatula processing), and the other convex portions 44 are not provided, so the member P according to the present invention is It is possible to obtain a higher decorative effect than conventional products. In addition, compared to a button using a drawing process as in the past, the processing cost is lower when a bulge process is used as in the present invention.

The convex portions 44, holes 56, and uneven portions 59 as shown in FIGS. 9 to 20 above can be formed only in the parts of the member P where patterns and holes are required using the apparatus shown in FIGS. 7 and 8. . Also the 7th
It is also possible to apply the bulge process to the same member P multiple times using the apparatus shown in FIG. The hole 56 and the convex portion 44 in FIG. 14 can also be formed in separate bulging steps. Of course, when performing bulge processing on the entire member, an apparatus as shown in FIG. 21 can be used.

In the device shown in FIG. 21, the elastic body 16 extends over the entire length of the member P.
are fitted, and the pair of holders 60 driven by the cam member 63 compresses the elastic body 16 via the pusher 61.

Next, the process of processing the frame material for fittings will be explained. After extrusion molding, the frame material for fittings is subjected to tempering treatment (age hardening treatment), then bulged as described above, and then subjected to alumite treatment, cutting, etc., to become a predetermined product. Further, bulge processing may be performed following extrusion molding, and then tempering may be performed. In any of the above cases, since the bulge process is performed on the long member P before cutting, the alumite treatment can be performed by hanging the long member P vertically, which improves the work efficiency of the alumite treatment. will improve. Furthermore, when performing bulge processing, fine linear protrusions may be formed along the mating surfaces of the horizontal die 111 (Fig. 1), but by performing alumite treatment after bulge processing as described above, these protrusions can be removed. It can be hidden with an amite layer to improve its appearance.

As explained above, according to the present invention, since the convex portion 44 etc. are formed by the bulge processing, it is possible to arbitrarily attach patterns etc. to the member P with various cross-sectional shapes, and it is highly decorative. The member P can be manufactured at low cost. Also, in the case of the header pipe (P) as shown in FIG. 4, the forming procedure can be simplified compared to the conventional case where the convex portion 81 is formed by lathe spatula drawing. Furthermore, in the present invention, since the bulge process is applied only to the parts of the member P that require convex parts, etc., it is difficult to apply force from the elastic body to the entire member P.
The device can be made smaller compared to Furthermore, it is possible to prevent the elastic body 16 from being compressed unnecessarily and to accurately deform a predetermined portion of the member P.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of a processing device according to the present invention.
The figure is an I-M sectional view of Figure 1, Figure 8 is an enlarged partial view of Figure 2, Figure 4 is a schematic plan view of the solar collector, and Figures 5 and 6 are perspective views of the Kasagi connection. Figures and cross-sectional views, Figures 7 and 8 are schematic cross-sectional views of processing equipment of different embodiments, Figures 9 and 10 are perspective views and cross-sectional views of frame materials for fittings, and Figure 10a1
The figure is a schematic cross-sectional view of the processing device for frame materials shown in Figure 1O, Figures 11 and 12 are cross-sectional views of other frame materials for fittings, Figure 13 is a perspective partial view of a picture frame, and Figure 14 is a backbone. The front view, FIGS. 15 and 16 are partial cross-sectional views of the punched hole processing section, and FIGS. 17 and 18.
The figure is a partial cross-sectional view of a protrusion processing part, FIGS. 19 and 20 are a partial cross-sectional view and a partial perspective view of yet another powder for fittings, and FIG. 21 is a schematic cross-sectional view of a processing device. 16... Elastic body, 19... Head (support part), 25...
...Plate (support part), 26...Cam part (drive mechanism)
, 30...Groove (4 parts), P...Hollow member Patent applicant: Japan Aluminum Industry Co., Ltd. (1 other person)
Agent Patent Attorney Tadaka Omori

Claims (2)

[Claims] (1) An outer mold with a recess that supports the outer surface of the tubular hollow member, an elastic body that fits onto the inner periphery of the hollow member at a portion in the longitudinal direction of the hollow member, and a pair of support parts that support both ends of the elastic body. What is claimed is: 1. A bulging device for a hollow member, comprising: and a support drive mechanism that moves the support and compresses the elastic body. (2) The apparatus for bulging a hollow member according to claim 1, wherein the hollow member is an extruded aluminum section for a fitting frame material.