摘要:
A process and device are provided for welding a flat multiwire cable onto a printed circuit, the wires of the cable being evenly spaced and the printed circuit comprising conductive strips of equal spacing. In accordance with the invention, the conductors are stripped close to their end, bent so that their lower portion is of the same length as the conductive strip and undergo a preliminary cut. The lower portion of the wire is there inserted onto the conductive strip and heated. The portion which is preliminary cut, is removed by plying.
摘要:
A device for soldering chips (e.g. integrated circuit chips) to a metallized substrate, said chips being previously mounted on a carrier film having metallizations thereon. This device comprises a plate for supporting the film having chips mounted thereon, said plate being provided with a die on which each chip of the film is successively adjusted, each adjusted chip overhanging said die. This device further comprises a bonding head, the peen of which is shaped to be engaged in said die for cutting the leads of each adjusted chip, each chip being thus detached from the film and carried by the bonding head to be soldered on the substrate.
摘要:
A device is provided for detecting the absence of a finger in a printer, comprising a mobile support provided with print-type support-fingers and with an equal number of synchronization marks, and a fixed detector of synchronization marks which sends a so-called synchronization pulse to a strike triggering member, whenever a mark is passing before it. The device is characterized in that it comprises a second fixed detector placed at the lever of the finger associated with the mark, which, during the displacement, passes before the first detector and delivers a pulse indicating the presence of a finger each time a finger is passing before it, and a two input recognition circuit, each input receiving respectively pulses delivered by the first and the second detector.
摘要:
A velocity modulator device is provided for printer type supports driven by rotary members comprising at least one driving mechanism including a motor causing a rotary member to rotate by means of a resilient torsion bar, said mechanism having a mechanical resonance frequency F. In accordance with the invention, the velocity modulator device is characterized in that the motor is a low inertia direct current motor supplied by a periodic current of the frequency F, the intensity of the current being such as to periodically bring the velocity of the rotary member to zero, at the frequency F, without changing its direction the motion of said member, resulting from superposition of a rotary uniform driving motion and an oscillatory motion at the frequency F.