Seho Systemtechnik Gmbh

Rudolf Ullrich

Rolf Diehm

Johann Alfred Blohmann

Thomas Schlembach

A process chamber of an installation for the thermal treatment of printed circuit boards is described. The process chamber may include a fan wheel supported on a shaft parallel to the printed circuit boards, the fan wheel being disposed between two walls of the process chamber. The fan wheel is open at its two end faces and the two end faces are at such a distance from the walls of the process chamber that gas flows in unimpeded in two substreams between the end faces of the fan wheel and the walls and flows out from the cylindrical surface of the fan wheel over the length thereof and in the extent of the process chamber in the form of a ribbon-shaped gas stream, the gas stream being directed essentially in the cross section through a channel onto the printed circuit boards.

Process chamber of an installation for the thermal treatment of printed circuit boards

The invention relates to a supporting device of the transport device of a soldering apparatus for the conveying of printed-circuit boards with at least two revolving, endless transport chains, said transport chains running in guide rails in the transport zone and each passing through two guide elements at the ends of the transport zone, wherein, for adaptation to the width of the respective printed-circuit boards, the guide elements are mounted on a carrier such as to be displaccable transverse to the conveying direction. The guide elements, each associated with a respective conveying chain, are interconnected by flexible tension elements, said tension elements being adjustable with regard to their tensile stress and running parallel to the respective conveying chain in the transport zone, the value of the tensile stress being so highly adjusted that the tension elements prevent the guide rails from deviating from a straight line.

Supporting device of a transport device of a soldering apparatus

An apparatus for the temperature regulation processing of electronic components such as semiconductor circuits, printed circuit boards and the like comprises a temperature regulated housing through which the components are conveyed on carriers. The carriers enter through an inlet slot in the housing provided with temperature regulating members and are conveyed onto a magazine and then out through an outlet slot opposite the inlet slot once processing is complete. Inside the housing, the carriers are loaded on a progressively loaded magazine provided with adjacently arranged holders. Once all the holders are loaded, the magazine is filled and in an end position. The magazine is then displaced to its starting position in a fast reverse run. A new carrier is conveyed in through the inlet slot thereby causing the temperature regulated carrier occupying the holder to be conveyed out through the outlet slot.

Apparatus for the temperature regulation of electronic components

A method and apparatus for the temperature regulation of components such as semiconductor circuits, printed circuit boards and the like. The components are conveyed on carriers through an inlet slot into a temperature regulating housing provided with temperature regulating members and are convey out through an outlet slot opposite the inlet slot. In the housing, the carriers are loaded on a magazine provided with adjacently arranged holders. After the first holder is loaded in the starting position, the magazine is displaced progressively in one direction into successive positions in which the remaining holders of the magazine are loaded one after the other. Once all the holders are loaded, the magazine is filled and in an end position. Thereupon the magazine is displaced back to its starting position in a fast reverse run in the opposite direction. Back in the starting position, a new carrier is conveyed in through the inlet slot thereby causing the temperature regulated carrier occupying the holder to be conveyed out through the outlet slot. Successive loading of the holders in the magazine causes off-loading of the temperature regulated carriers. By this process a temperature regulated carrier is replaced by a new carrier and the residence time of each carrier in the magazine corresponds to the period of time between two reverse runs until all the holders are loaded again and in the end position.

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Kreuzwertheim, Germany

Rudolf Ullrich