Weld control structure for and method of delaying initiation of

Details Weld control structure for and method of delaying initiation of Weld control structure for and method of delaying initiation of

1984-01-30

1992-07-07

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

B23K 1124

Patent

active

051285070

ABSTRACT:
A weld control structure and method for delaying initiating a weld until the voltage of a source of welding energy is at a preselected variable value or a variable preselected number of cycles a source of welding energy have occurred without the voltage reaching the preselected value and providing a fault indication when the weld is initiated as a result of the preselected number of cycles being reached without the voltage reaching the preselected voltage. The structure includes a voltage checker for checking the voltage in each cycle of a single phase source of electrical welding energy, a counter for counting each cycle of the energy source in which the voltage is checked after a weld is requested, a fault indicator and a central processing unit programmed to initiate a weld only when the voltage of the energy source has reached the preselected value or the counter has reached the preselected count without the voltage reaching the preselected value operably connected to the voltage checker, counter, fault indicator and welder. The method includes sensing the voltage in each cycle of a single phase welding energy source and initiating a weld when the voltage reaches a predetermined variable value or initiating a weld and energizing a fault indicator when a counter for counting the cycles of the energy source in which the voltage has been checked has reached a preselected variable member of counts without the voltage reaching the preselected value.

REFERENCES:
patent: 4063075 (1977-12-01), Collom
patent: 4329561 (1982-05-01), Schafer et al.
patent: 4456810 (1984-06-01), Schumacher et al.

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