Seal arm latching mechanism for heat sealing apparatus

Details Seal arm latching mechanism for heat sealing apparatus Seal arm latching mechanism for heat sealing apparatus

1983-01-10

1984-05-08

Wityshyn, Michael G.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With timing means

53373, 100 93P, 156515, 1565831, 1565832, 1565839, 335 77, 335170, 493193, 493209, B30B 1516, B30B 1534, H05B 100

Patent

active

044472846

ABSTRACT:
A pneumatic-electromagnetic latch is disclosed as applied to bring the sealing jaws of an L-sealer into pressure engagement without impact. An electromagnet mounted on a piston rod of a pneumatic actuator attracts and retains an armature attached to the sealing jaws when the jaws are brought close to the sealing bed. The cylinder of the actuator is attached to the frame and when actuated it draws the sealing jaws into smooth pressure contact with the sealing bed. Upon deenergization of the electromagnet the jaws are released to open for the next sealing cycle and the release of fluid pressure in the actuator extends the piston rod to position for the next operation.

REFERENCES:
patent: 3015600 (1962-01-01), Cook
patent: 3428512 (1969-02-01), Cooper
patent: 3490981 (1970-01-01), Shanklin
patent: 4082941 (1978-04-01), Sukow et al.
patent: 4221626 (1980-09-01), Clay

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