A method for manufacturing a linear lighting device (100), the method comprising the steps of providing (S1) a sheet of optically transmissive material (102), a sheet of thermally conductive material (104), and a plurality of light sources (106), arranging (S2) the light sources on the sheet of thermally conductive material, roll forming (S3) the sheet of thermally conductive material into a supporting heat spreader profile, roll forming (S4) the sheet of optically transmissive material into a first shape to cover the light sources and define an optical chamber, attaching (S5) end portions of the sheet of optically. The method enables the use of a lower amount of material and provides an efficient method for mass manufacturing linear lighting devices.

A method is provided for roll-forming a sheet metal strip (35) by driving the sheet metal strip through a row of forming stations (17, 18) having pairs of rollers (19, 20; 29, 30) directed towards each other and both holding the sheet metal strip therebetween and forming the sheet metal strip over roller edges. In every second forming station (12), two angles (41, 42) are gradually formed and in every second forming station two other angles (43, 44) are gradually formed.

A method for joining edges and/or surfaces of a profile in a profiling installation for longitudinally forming a virtually endless material strip into an at least partially closed profile shape. The material strip or profile is formed roll forming tools into a profile which is closed or partially closed, and is fixed in a joining zone, with a longitudinally running joining seam being formed. The profile passes in the joining zone through a joining roller arrangement and/or planar joining arrangement to feed the profile to a joining point and to stabilize the profile there, and/or to ensure that it is dimensionally stable during and after joining. Forces or magnitudes of force components which act on the profile from at least one of the joining rollers and/or a subsection of the planar joining arrangement are detected in the joining zone. A planar joining arrangement and a profiling installation are also provided.

An apparatus for roll stamping that is capable of expanding a shape range of a product without limitation due to, for example, a radius of curvature or a height of a variable section includes: an inclined roll set including a first rotation roll and a second rotation roll rotating while facing each other, have fixed positions and angles, and are inclined with respect to a traveling material, in which a first forming portion for forming the material is formed on an outer surface of the first rotation roll, the first forming portion includes a first circumferential groove portion inclined at an oblique angle rather than a right angle with respect to a rotation shaft of the first rotation roll.

A method of manufacturing an operating beam of a sunshade assembly having a variable height while controlling the width in manufacturing is provided. An operating beam manufactured as such and the use of said operating beam in a vehicle are also provided.

A method for manufacturing a rollforming frame includes: forming a first vertical wall and a first horizontal wall connected to each other at two opposite ends of a to-be-machined plate; rolling and bending the first horizontal wall to form a stepped bent structure; rolling and bending the first horizontal wall to form a second vertical wall, a second horizontal wall, and a third horizontal wall; rolling and bending the second horizontal wall to form a third vertical wall and a fourth horizontal wall; rolling and bending the third horizontal wall to form a fourth vertical wall and a fifth horizontal wall; rolling and bending one end of the fifth horizontal wall away from the fourth vertical wall to form a connecting edge and a sixth horizontal wall; rolling and bending the sixth horizontal wall to form a fifth vertical wall and a seventh horizontal wall.