CN2206167Y

CN2206167Y - Special-shaped section-bending forming die

Info

Publication number: CN2206167Y
Application number: CN 94212764
Authority: CN
Inventors: 曹永和; 王耀文; 康敬武; 徐丽艳
Original assignee: HARBIN AIRPLANE Manufacturing Co
Current assignee: HARBIN AIRPLANE Manufacturing Co
Priority date: 1994-05-31
Filing date: 1994-05-31
Publication date: 1995-08-30
Anticipated expiration: 2004-05-31

Abstract

The utility model relates to a special-shaped section bending forming die. Before the utility model is bent and formed, the lower part of an I-shaped integral snake-shaped block connected in series by a steel cable is sheathed in the special-shaped section and arranged in the bent part of the special-shaped section. The upper part of the I-shaped integral snake-shaped block is supported by baffle plates arranged on both sides of the curved face position of the die body. Thus, the special-shaped section can be prevented from generating flexing and section distortion in the process of bending and forming, and the special-shaped section can achieve the requirement of deformation. The utility model has the characteristics simple structure, convenient assembly and disassembly, and high efficiency.

Description

Special-shaped section-bending forming die

The utility model relates to a kind of mould, particularly a kind ofly makes mould inserts, that make special-shaped section bar stretch wrap forming with whole snakelike of I shape.

At present, adopt snakelike of combination or low-melting alloy as inserts usually during special-shaped section bar stretch wrap forming.Adopt its installation of mould, the dismounting of snakelike of combination inconvenient, and when stretch wrap forming, local snakelike is extruded easily, makes special-shaped section bar section produce distortion; Adopt low-melting alloy to make the mould of inserts, it needs earlier low-melting alloy to be melted, and is poured onto in the section bar that needs moulding, carry out stretch wrap forming after the alloy cooling, and then heat low-melting alloy is melted away, make operation various like this, the cost height, efficient is low.

Snakelike of the distortionless usefulness of its section was made the special-shaped section bar stretch wrap forming mould of inserts after the purpose of this utility model provided that cover installation and removal are convenient, efficient is high, cost is low and makes special-shaped section bar stretch wrap forming.

The utility model comprises die body, baffle plate, whole snakelike and steel wire rope, and the curved portion shape of die body and special-shaped section bar need the shape of stretch wrap forming to adapt, and the cross section of the groove of die body and the section of special-shaped section bar adapt; Be separately installed with baffle plate in die body working portion both sides, the upper surface of baffle plate and die body curved surface are consistent; Whole snakelike cross section is I shape, and by the steel wire rope serial connection, its length should be greater than the length of the special-shaped section bar that needs the stretch bending distortion; The lower part of I shape is inserted in the inner chamber of special-shaped section bar, and upper part is placed on the baffle plate and is supported by baffle plate, makes special-shaped section bar meet the curvature of stretch bending mould like this behind the stretch bending.

For installing, dismantle the convenience of special-shaped section bar, die body can make combined type, and it assemblies the die body that meets special-shaped section bar cross-sectional shape by some minutes die body processes.

Stretch wrap forming mould with the whole snakelike block of inserts during as special-shaped section bar stretch wrap forming of the I shape of steel wire rope serial connection has simple in structure, installation, convenient disassembly, the efficient height, cost is low, can overcome deflection and section distortion that special-shaped section bar produces in the stretch wrap forming process, make special-shaped section bar reach deformation requirements.

Fig. 1 is the structural representation of special-shaped section bar stretch wrap forming mould;

Fig. 2 is Figure 1A-A generalized section;

Fig. 3 is the enlarged diagram of Fig. 1 I.

Below in conjunction with accompanying drawing the utility model is described further.

The die body of this mould is bound to join with general screw pin and is formed and be installed on the stretch benders by a minute die body (1), branch die body (5), the degree of crook of the curved portion of die body wants the degree of stretch bending to determine by special-shaped section bar (6), and the groove cross section shape of die body is by the section shape decision of special-shaped section bar (6); The corresponding to baffle plate of sweep (2) of two upper surfaces and die body is installed in the both sides of branch die body (1), (5) curve working portion respectively; With I shape whole snakelike (3) serial connection, the total length that I shape is whole snakelike should surpass the curve line length that needs crooked special-shaped section bar (6) with two steel wire ropes (4).Be inserted in the lower part of I shape whole snakelike (3) before the stretch wrap forming from the termination that is placed on special-shaped section bar (6) on the die body groove, make it to place special-shaped section bar (6) to need sweep, the upper part of I shape whole snakelike (3) is pressed in the baffle plate (2) that is installed on branch die body (1), (5) and goes up and supported by it.Abnormity section bar (6) two ends are clipped in respectively in the stretch bending chuck consistent with special-shaped section bar section on the stretch benders.Behind the stretch bending, the whole snakelike termination from special-shaped section bar of the I shape of serial connection taken out, finish the stretch bending process of special-shaped section bar.

Claims

1, a kind of special-shaped section bar stretch wrap forming mould, mainly comprise die body, baffle plate and whole snakelike, the curved portion shape of die body and special-shaped section bar need the shape of stretch wrap forming to adapt, the cross section of the groove of die body and the section of special-shaped section bar adapt, it is characterized in that: whole snakelike cross section is I shape, form by the steel wire rope serial connection, the lower part of I shape is inserted in the inner chamber of special-shaped section bar, upper part is placed on to be installed on die body working portion two side shields and by baffle plate and supports, and the upper surface of baffle plate and die body curved surface are consistent.

2, according to claims 1 described special-shaped section bar stretch wrap forming mould, it is characterized in that described die body adopts combined type, it assemblies the die body that meets special-shaped section bar cross-sectional shape by some minutes die body processes.