JPS5927722A - Roll forming device - Google Patents

Abstract

PURPOSE:To mass-produce tapered plate material products of modified cross section easily with high precision by using a male roll dowel which has a tilt angle to a shaft core and a female roll dowel which corresponds to it when a tapered plate material having flange parts on both sides is formed. CONSTITUTION:The roll forming device consisting of the male die roll dowel 1 whose one end surface slants to the revolving shaft core at the necessary tilt angle and the female die roll dowel 2 which has a groove 2a meshing with the roll dowel 1 is used; the plate material 3 is held and both roll dowels are rotated in the opposite directions to manufacture plate products which have the flange parts 3a on both sides and vary in sectional shape lengthwise easily and successively. In this case, size L is the circumferential length of both roll dowels 1 and 2, and the long-sized plate material 3 is formed successively and then cut to length L or L/2 to obtain numbers of tapered sashes of the same length.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll forming apparatus for forming, for example, a 7-lung portion (=1 taper-shaped plate material) having an irregular cross section whose cross-sectional shape changes in the longitudinal direction.

In the automobile industry, tapered plates whose cross-sectional shape changes in the longitudinal direction are used, such as wide door frames and belt moldings with irregular cross-sections. Conventionally, when forming a tapered plate material having a flange part a on the flange part a, a hydraulic press apparatus was mainly used to process the seven flange parts a on one side at a time. Therefore, in such a conventional method, -l is
There was a problem of poor processing efficiency.

The present invention was made in view of these circumstances.

The purpose is to provide a roll forming apparatus that can efficiently and accurately form a tapered plate material with flange portions 1' on both sides.

Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIG. 2, a male roll piece 1 whose one end surface has a required inclination angle with respect to the rotation axis, and the male roll piece 1
A female roll piece 2 and the like which engages tM 2 a on the right side are supported on a stand (not shown) so as to be rotatably driven so as to grip the molding line from above and below, and also to be movable up and down.

These A-type roll piece 1 and female type [1-ru piece 2] have a correspondence in advance between the surface length of the male type roll piece 1 facing the axis 15 and the surface length of the axis direction groove 28 of the female type roll piece 2. It should be placed in the correct position.

With such a configuration, 1 = using a roll forming device (- When forming the plate 3, the male type roll piece 1 and the female type roll piece 2 are used.
A predetermined gap is maintained between the plate material 3 and the plate material 3, and the plate material 3 is rotated at a constant speed in opposite directions. The plate material 3 thus formed has flanges 3a on both sides, as shown in FIG. 3, and is a product whose cross section changes in the longitudinal direction. In Fig. 3, one dimension is the circumferential length of the male roll piece 1 and the female roll piece 2, and after continuously forming a long plate material 3, it is lengthened or l-/2. A large number of tapered sashes of the same length can be obtained by cutting the same length.

As described above, when the plate material 3 is formed using the male roll piece 1 and the female roll piece 2, a tapered plate product with a flange portion 3a having an irregular cross section in the longitudinal direction can be obtained. At this time, the change in the cross section of the product is
The inclination angle of the roll pieces 1 and 2 is selected, the rising height of the flange portion 3a is determined by the engagement depth of both roll pieces 1 and 2, and the length of the product is determined by the diameter of both roll pieces 1 and 2. This allows for easy changes.

In the above embodiment, one end surface of the male roll piece 1 and one groove surface 2a of the female roll piece 2 are perpendicular to the shaft center, but depending on the shape of the product to be obtained, An angle of inclination may be provided on both end faces).

As explained above, the roll forming apparatus of the present invention includes A-shaped roll pieces each having an inclined angle with respect to the axis, and a female-type roll having a groove corresponding to the A-shaped roll pieces. The pieces allow continuous roll forming of the plate material,
It is possible to easily and efficiently produce a one-piece plate product with an irregular cross section with high precision, and it is also possible to produce large quantities of the product.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a tapered plate material, Fig. 2 is an explanatory diagram of a tapered plate material, and Fig. 2 is an explanatory diagram of a tapered plate material.
FIG. 3 is an explanatory diagram showing the shape of a molded plate. 1...A-shaped roll piece 2...Female type roll piece 2a...Groove Fig. 1 Fig. M3

Claims (1)

[Claims] A male type roll piece whose end face has a required inclination angle with respect to the core of the rotating shaft 111, a female type roll piece having a corresponding groove that engages with the A-spool L1-le piece A roll forming device comprising: