| 主权项 |
1. A system for framing motor-vehicle bodies or sub-assemblies thereof having:
a framing station; a conveyor line for supplying the framing station with a sequence of component parts of a motor-vehicle body, the component parts being at least one of lower body sub-assemblies or pre-assembled bodies, and for transferring a framed body out of the framing station; wherein said framing station comprises locator means for locating and clamping component parts in a proper assembling position and assembling means for applying a plurality of at least one of welds or clinched joints or riveted joints to located and clamped component parts; wherein said locator means comprises multiple pairs of side locating and clamping structures which are interchangeable at an operative position at the framing station to operate on the component parts of respective different types of motor-vehicle bodies, each of said pairs of locating and clamping structures being provided at two opposing sides of the conveyor line at the framing station and each provided with a plurality of locating and clamping devices for engaging component parts, said locating and clamping devices being shaped and arranged so as to be adapted to engage the component parts of a specific model of a motor-vehicle body; wherein each of the pairs of side locating and clamping structures, when at the operative position at the framing station, are movable along a transverse direction with respect to the conveyor line between a closed operative position for engaging component parts positioned at the framing station and an opened operative position in which they are relatively spaced more apart from each other, for at least one of activation of the conveyor line in order to replace a framed body with new component parts or for positioning new component parts on the side locating and clamping structures; wherein the side locating and clamping structures each comprise a rigid supporting structure and a frame carrying said locating and clamping devices and supported by said supporting structure; wherein said supporting structure of each side locating and clamping structure is slidably movable along longitudinal guides on a respective side of the conveyor line between its operative position and a waiting position, upstream or downstream of the framing station, and when the side locating and clamping structure is at said operative position, it is received above separate sections of said guides which are in the form of rail sections carried by a structure which is movable along a direction transverse to the conveyor line, each supporting structure having a base platform and at least two pillars for supporting a respective frame, the pillars removably connected to the platform at positions substantially aligned with each other along a longitudinal direction parallel to the conveyor line, the positions of said pillars relative to said platform both in the longitudinal direction parallel to the conveyor line and in a direction transverse with respect to said longitudinal direction being different for different frames provided for respective different types of motor-vehicle bodies, each platform forming part of the respective supporting structures of each of the side locating and clamping structures being identical for all of the different frames. |
