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Sheet metal bending machine and production line incorporating a machine of this type

A metal sheet and production line technology, which is applied in the field of roll bending presses and roll bending presses, and can solve the problems of inability to obtain

Inactive Publication Date: 2007-10-03
JAMES IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a system cannot obtain a truly cylindrical tube with a diameter close to 80 mm and a length close to 1.20 m

Method used

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  • Sheet metal bending machine and production line incorporating a machine of this type
  • Sheet metal bending machine and production line incorporating a machine of this type
  • Sheet metal bending machine and production line incorporating a machine of this type

Examples

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Embodiment Construction

[0028] A sheet metal bending machine 1 called a "roll bending press" shown in FIG. 1 includes a substantially H-shaped main body portion 2 . The spacing between the H-shaped uprights 3 and 4 is adapted to the desired final length of the tube T to be produced. The transverse bar 5 of the body 2 of the machine supports a stationary transverse bar 6 which is kept substantially horizontal. The crossbar 6 has on its top face three notches 7 inclined at approximately 45° with respect to the longitudinal axis A-A' of the crossbar 5 . The crossbar 6 is movable longitudinally by a hydraulic device 60 in a direction parallel to the axis A-A'.

[0029] A second crossbar 9 , which is equipped on its bottom face with at least two partitions 8 , rests on the crossbar 6 . Therefore when the cross bar 6 and the partition plate 8 move from left to right or from right to left in Fig. 2 at the same time, the cross bar 6 and the partition plate 8 are on the slope of the notch 7-the partition pl...

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Abstract

The invention relates to a roller-type sheet metal bending machine comprising a so-called bending roller (20), which is rotationally driven and around which the sheet metal winds, and comprising at least two supporting rollers (19) designed for receiving, while being pressed against by, a sheet metal that is being bent around the bending roller (20). The supporting rollers (19) are mounted so they can freely rotate on a support (11) and can be adjusted in the height thereof whereby adapting the clearance between the bending roller (20) and the supporting rollers (19) to the thickness of the sheet metal. The bending roller (20) is associated with at least one set of means (21, 23) for compensating for, at least in part, its deflection. The supporting rollers (19) are associated with at least one set of means (11) for compensating for their deflection, this set being able to be adjusted according to the potential residual deflection of the bending roller (20). The set of means (21, 23) for compensating for the deflection of the bending roller (20) comprises an arm (21) provided with a housing (22) inside of which the roller (20) is partially accommodated, as well as means (23A, 23B) for holding the roller (20) inside the housing (22). The invention particularly serves to produce tubes with a high ratio of length to diameter.

Description

technical field [0001] The present invention relates to a machine for bending sheet metal, in particular to a machine of the roll bender type. The invention also relates to a production line for producing tubes or cylinders by bending sheets, the (production line) equipment comprising a bending machine. The term "roll bending press" refers to any machine capable of forming tubes or ferrules from sheet metal material, especially sheet metal, of relatively small thickness. The tube or ferrule may be made by bending the sheet, ie bending the sheet around a radius of curvature corresponding to the radius of curvature of the tube or ferrule. In particular, the invention relates to roll bending presses for producing tubes or ferrules whose diameter is as small as possible depending on the length of the tube and the thickness of the tube wall, for example in the case of a length of about 1 meter (m) and a thickness of 0.5 mm A tube with a diameter of 60 millimeters (mm). Backgrou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D5/14
CPCB21D5/14
Inventor M·格拉维耶
Owner JAMES IND INC
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