JPS6182932A - Method and device for continuously bending long-sized member along its axial line - Google Patents

Abstract

PURPOSE:To perform efficiently and precisely a continuous three-dimensional bending work by bending a long-sized member having a profiled cross-sectional shape, sent out after being bent in the horizontal direction by a pair of right and left bending rolls, is bent in the vertical direction by a pair of upper and lower bending rolls, working in cooperation with said vertical rolls, while following the curved axial line of the member. CONSTITUTION:A molding stock M2 sent out from guides 20, 30, after being formed into a profiled cross-sectional shape by forming rolls 10, is bent in the horizontal direction by a pair of right and left bending rolls 61, 62 supported vertically by supporting axis 42. Successively, the stock M2 is bent in the vertical direction while changing its direction by the axis 75 of a pair of upper and lower bending rolls 70a, 70b working in cooperation with the rolls 61, 62. At that time, the rolls 70a, 70b bend the stock M2 along its curved axial line, while depending on the movements of axes 71, 72 and the changes of the inclinations of spherical bushes 77, 78. Accordingly, the stock M2 is efficiently and precisely formed into a prescribed shape by said three-dimensional work.

Description

DETAILED DESCRIPTION OF THE INVENTION The industrial field of application relates to a method and apparatus for continuously bending an elongated member such as a molding material formed into an irregular cross-sectional shape.

Conventional technology Wind molding M etc. for automobiles (see Figure 36 1)
111. ), a metal strip or strip material such as stainless steel is pre-folded into a continuous molding material having a predetermined transverse i/j shape using a roll forming machine, and then it is bent in the IhII direction. The molding material is then sent to a kite device that is supported by a slide 'uf function, and the molding material linearly sent out from the guide device is sent to a +th line bending device for the molding material that swings uniaxially, and is prepared for the bending device. When bending is performed in two dimensions using a pair of left and right bending rolls, axial bending is performed in a three-dimensional direction by swinging a pair of upper and lower bending rolls spaced apart from each other up or down. It has already been proposed to
No. 793).

Problems to be Solved by the Invention In this type of continuous axial bending process, after a long member is bent in two dimensions between a kite device and a pair of left and right bending rolls, the curvature remains unchanged. Since the long member is inserted through the pair of upper and lower bending rolls located at the rear, the long member is axially bent to a small curvature and then bent to a large curvature. When moving and swinging back, a pair of left and right bending rolls and up and down -t
Since the curvatures of the elongated members inserted through the respective bending rolls of =J are different t), the pair of upper and lower bending rolls acts to weaken the bending of the axial portion that has already been bent as desired.

Means for Solving the Problems In the continuous axial bending process of a long member according to the present invention, the long member is slidably supported along the axial direction by a guide device, sent out in a straight line, A long member is slidably inserted and supported by a pair of bending rolls and a pair of upper and lower bending rolls with an interval apart, and the rolls are moved together to uniaxially swing at a desired angle in the direction of the plumber. By moving the position and freely tilting and deflecting a pair of upper and lower bending rolls following the uniaxial rocking motion of each pair of rolls, each pair of rolls inserts the @ line portion of the elongated member with a different curvature. The long member can be bent in two or three dimensions while being supported, and the long member can be slid behind the guide device that supports the long member by sliding it along the +lI line direction and sends it out in a straight line. An I1SII wire bending device, which is a long member equipped with a pair of left and right bending rolls and a pair of upper and lower bending rolls inserted at a distance, is arranged in a horizontal direction so that it can oscillate by -+il, and each pair of rolls is In the rear position, a continuous axis bending device is used, in which a lower pair of bending rolls are attached so as to be able to tilt and deviate in accordance with the -@ swing of the i-edge bending device.

Function: In this process of continuous axial bending of long members, the upper and lower pairs of bending rolls follow the uniaxial oscillation of each pair of rolls and freely tilt and deviate. Even if the edge bending device is swung back in order to change the curvature of It can be made to pass according to the curvature.

Example It is.

This bending process is performed using a metal plate material that can be plastically deformed to produce a window molding for an automobile similar to that shown in FIG. 6.

The devices (see Figure 1.2) include a roll forming filo which forms a continuous molding material M2 by forming a fully bent strip and a molding material M into a predetermined cross-sectional shape, and a linear molding material M2. An insertion guide fitting 20 that prevents buckling from occurring in the molding material M2, a guide device 30 that slides and guides the molding material M2 while maintaining it in a straight line, and an axial line bending device 4 that curves and forms the molding material M2 to a desired curvature.
0 are arranged in series in sequence.

The kite device 30 inserts the molding material M2 1ii
A plurality of sets 31, 32, 33 of a pair of left and right idling rollers facing each other at one interval are arranged in front and back, so that the molding material M2 can be linearly slid and supported in the @Ju direction.

Ak ωdi+ IJ ** 5'r A I"l (
Woman') 7 r'V We R) I+ Support the plate 41 on the machine base 50 with the support shaft 42, and attach the base plate 4
1 in the horizontal direction by a cam plate (not shown) that can be oscillated in three-dimensional directions to the left or right. This @line surface bevelling device 40 is equipped with a left and right bending roll 60 and a pair of upper and lower bending rolls 70 via an upright plate 43 defined on the plate surface of the base plate 41. The left-right and diagonal bending rolls 60 are vertical rolls 61 and 62 through which the molding material M2 is slidably inserted within the diagonal interval, and the axial bending rolls 60 are bent between the fulcrum of the molding material M2 and the fulcrum of the guide device 30 by the support shaft 42. By swinging the device 40, the axis of the molding material M2 can be bent in two-dimensional directions. Top and bottom - phantom bending roll 7
0 is attached via bracket plates 44 and 45 that protrude from the rising plate 43 and bracket plates 73 and 74 that bear the respective roll shafts 71 and 72.

Each bracket plate 44, 73, 45.74 has a support shaft 7
By connecting the support shaft 75 on one side with a rotational drive source and swinging the bracket plate 73.74 by −+b, the molding material M2 inserted between the rolls is rotated into the upper or lower tertiary shape. It can be bent in the original direction. Moreover, this bending roll 70 is made up of stepped calls 70a and 70b that fit into each other so that the molding material M2 can be inserted therethrough within opposing intervals, and each of the rolls 70a,
Reference numeral 70b is a repellent bush bearing 77,78 which is attached to the roll shaft 71.degree. 72 so as to be tiltable and swingable. Each bearing 7
7.78 are locked by the flange 71a, 72a formed on the roll shaft 71.72. Also.

The roll shafts 71.72 are supported on bracket plates 73° and 74 so as to be movable left and right, and their movement is controlled by stoppers 71b and 72 attached to one side of the roll shafts 71.72.
b is stopped by coming into contact with the bracket plate 74.

By using this bending device, the guide device 30 also straightens the molding material M2 along its axis! j, feed it into the equipment 4 (see Figure 2), and from that state, transfer it to the axis bending equipment 4.
After the axis of the molding member M2 is bent over a desired length in a two-dimensional direction with a desired curvature using a pair of left and right bending rolls 60 by swinging the entire molding member M2 around a support shaft 42 (fourth
(see figure a), to change this curvature to a larger curvature (by swinging back the line facing device 40 in the direction of the feeding linear position of the molding material M2, the guide device 3o and the left and right tabs 4
The molding material M2 can be bent with a relatively large bend between the bending rolls 60 of
70b is a spherical bearing 77°78 that tilts and deviates the posture according to the curvature of the molding material M that has been bent so far, and together with this, it rolls! ! b71,72 slide laterally from the bracket plate 74, thereby deflecting each roll 70a, 70b by R8. Due to these deflection movements, the bending rolls 70 in the upper and lower directions - By swinging at 75, bending in a three-dimensional direction can be performed as necessary.

In addition, the left and right pair of bending rolls are spherical bushes 77.78
It is also possible to configure the tilt deflection to be movable following the uniaxial movement of the axial line bending device 40 without using the axial line bending device 40. it is,
It can be configured by using a circularly curved roll as each roll @71' (only one side is shown), and by forming the bearing hole 79 of each roll 708' in a shape that expands from side to side.
: i'rJ5), in this case, each roll 708
' may be positioned and locked at the center using a stopper flange 71a' provided on the roll shaft 71'.

As described above, the continuous 8th line bending method for a long member according to the present invention and! According to J, 21, the axis of a long member bent by left and right bending rolls can be slid through a pair of upper and lower bending rolls while keeping the formed curvature, so even if the bending curvature is changed sequentially as necessary, it is extremely accurate. This makes it possible to continuously and efficiently bend the axis of a long member.

[Brief explanation of the drawing]

11th ffl a is a side view of the continuous axial bending processing device for a long member according to the present invention, 11th peeling is a top view of the same J device,
Fig. 2 is a partially cutaway plan view showing the relationship between the guide device and the axis bending device in Kasumi 1, Fig. 3 is a partially cutaway front view of the axis bending device in the same device, and Figs. 4a and b are FIG. 5 is a partially cutaway front view of an edge bending device according to another embodiment. FIG. 6 is a perspective view showing an example of the elongated member. M2: Long member, 30 guide devices, 40 + fi line bending equipment, 60: A pair of left and right bending rolls, 70: A pair of upper and lower bending rolls. Procedural amendment December 12, 1982

Claims (2)

[Claims] (1) A continuous long member, such as a molding material formed into an irregular cross-sectional shape, is supported so as to be slidable along the axial direction by a guide device, and sent out in a straight line, and behind it, a pair of left and right bending rolls are placed on the upper and lower sides. A long member is slidably inserted and supported at a distance between a pair of bending rolls, and each of the rolls is moved together by swinging uniaxially at a desired angle in the horizontal direction, thereby causing deviation movement of each of the rolls. By freely tilting and deflecting a pair of upper and lower bending rolls following the uniaxial oscillation of the roll pair, each pair of rolls can insert and support the axial portion of a long member with a different curvature, and can be used to create a two-dimensional or three-dimensional piece. 1. A continuous axial bending method for a long member, characterized in that the bending process can be performed in a direction. (2) Left and right sides where the long member is slidably inserted behind a guide device that slides and supports a continuous long member such as a molding material formed into an irregular cross-sectional shape along the axial direction and sends it out in a straight line. An axial bending device for a long member, which is equipped with a pair of bending rolls and a pair of upper and lower bending rolls spaced apart from each other, is arranged so as to be able to swing uniaxially in the horizontal direction. The bending rolls are mounted so that they can tilt and shift freely following the uniaxial swing of the axial bending device, and each pair of rolls inserts and supports the axial portions of the elongated member with different curvatures, allowing bending in two-dimensional or three-dimensional directions. 1. A continuous axial bending device for a long member, characterized in that it is configured to perform the following.