Manufacturing container or tube from paper; or other manufacturi – Control means energized in response to activator stimulated... – Responsive to work material – the product or means engaging...
Patent
1995-08-30
1998-06-30
Carone, Michael J.
Manufacturing container or tube from paper; or other manufacturi
Control means energized in response to activator stimulated...
Responsive to work material, the product or means engaging...
493 10, 493 27, 493193, 493209, 53 77, 53570, B31B 4900, B31B 2360
Patent
active
057725659
ABSTRACT:
A seal assembly for packaging machines facilitates the heat sealing of layers of material at the mouth of loaded bags. An operator may insert the layers of material between a pressure pad and a seal member positioned in a spaced position. Upon activation of a switch by the operator, an oscillating signal is applied to a solenoid to actuate movement of the pressure pad toward the seal member with a relatively soft force. An optical sensor senses when the pressure pad moves within a predetermined distance from the seal member and generates a sensor signal. In response to the sensor signal, a relatively constant voltage signal is applied to the solenoid to actuate movement of the pressure pad with a relatively high seal or clamping force to secure the layers of material against the seal member. The sensor signal also triggers energization of a heating element carried by the seal member to effectuate the heat seal between the layers of material. In this manner, damage to an object that becomes situated or jammed between the pressure pad and the seal member is minimized or avoided as such jammed objects prevent application of the clamping force and energization of the heating element. Such objects may be also be removed in a relatively easy manner because of the relatively soft force with which the pressure member exerts upon such objects.
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Ark Darren
Automated Packaging Systems, Inc.
Carone Michael J.
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