Plastics welding plant - with monitoring system for amt of thermal energy supplied

Independent of the main regulation loop for control of the power/energy feed to the resistance welding head, a separate sensor for current or voltage at the head is passed via an integrator to a comparator whose other input is the preset desired energy level for a satisfactory weld, the difference s...

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Bibliographische Detailangaben
Hauptverfasser:	STURM,WERNER, HUEGLI,WALTER
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Independent of the main regulation loop for control of the power/energy feed to the resistance welding head, a separate sensor for current or voltage at the head is passed via an integrator to a comparator whose other input is the preset desired energy level for a satisfactory weld, the difference signal from the comparator is amplified and passed via limit discriminators to under and over indicators so that the absence of an indication shows a satisfactory weld. Improved uniformity of product quality.