Double seam tightness monitor

Details Double seam tightness monitor Double seam tightness monitor

1984-11-09

1986-07-15

Gilden, Leon

Sheet metal container making

Apparatus applying closure to receptacle

413 6, 413 30, 72 19, 73774, B21D 5132

Patent

active

046003479

ABSTRACT:
This relates to a double seam tightness monitor wherein the second operation track of a cam of a double seaming apparatus or can closing machine is modified so as to permit the high dwell portion of the lobe thereof to deflect under loading from the associated cam follower which forces the second operation roll against the double seam component. Suitable strain gauges are associated with the deformable cam track portion and these are coupled in a bridge having a voltage output which is directed to a microprocessor. The microprocessor is provided with selected inputs which in combination with the voltage input from the bridge may be utilized to provide various signals including a high force condition signal, a pass condition signal, and a low force condition signal. There may also be associated with the microprocessor a printer for identifying the station where an abnormal condition exists, the specific force of the abnormal condition, the machine number, the time and the date. There may also be an output signal from the microprocessor which may be observed in several customary manners so as to permit a complete monitoring of the forces effected during the repeated seaming operations. There may also be a fault indicator for indicating when the same fault occurs at the same station repeatedly for a preset number of cans. The monitoring operation is entirely automatic except for the resetting of the fault indicator and for the manual control of the printing of high and low forces for those stations which are forming double seams that are passable. This abstract is not to be construed as limiting the claims of the application.

REFERENCES:
patent: 3465703 (1969-09-01), Jantze
patent: 4205617 (1980-06-01), Chmielowiec

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