Device for controlling a panel press for the assembly of _multil

Details Device for controlling a panel press for the assembly of _multil Device for controlling a panel press for the assembly of _multil

1981-10-13

1983-01-04

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Automatic and/or material-triggered control

100 51, G05G 1500

Patent

active

043671152

ABSTRACT:
A device for controlling a heated panel press in the switchover from a contact pressure mode to a curing pressure mode, in connection with the assembly of multilayer stacks of printed circuit boards with interposed thermosetting resinous bonding layers, the device consisting essentially of a displacement transducer measuring the decrease in the stack height in terms of displacement pulses and a pulse counter and count comparator producing a switchover signal at a predetermined threshold count which reflects attainment of the flux point in the bonding layer resin. After an adjustable delay, the switchover signal is transmitted to the control unit of the press.

REFERENCES:
patent: 3925139 (1975-12-01), Simmons
patent: 3935053 (1976-01-01), Armstrong
patent: 3979248 (1976-09-01), Kussmaul
patent: 4264394 (1981-04-01), Izumihava

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