Resistance welding method, resistance welding apparatus, and method for manufacturing electronic component
AssigneeMurata Manufacturing Co., Ltd.
InventorKatsuhiro Onishi
Life of this patent
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Abstract
In a resistance welding method and a resistance welding apparatus which prevent a decrease in bonding strength between a lead wire and a metal member due to a partially formed current flow path and which immediately removes a defective component from a manufacturing line, a plurality of second welding electrodes in contact with the metal member is provided so as to provide a plurality of current flow paths, and accordingly, to prevent an unevenly distributed current flow. The bonding strength is measured to determine whether it is satisfactory or not on the basis of currents flowing through the second welding electrodes. Also, the electronic component is fixed by the second welding electrodes after resistance welded.
Claims17
A resistance welding method for bonding a lead wire and a metal member to each other by resistance welding, comprising the steps of:
- pressing the lead wire which is clamped by a first welding electrode so as to be in contact with the metal member;
- providing a plurality of second welding electrodes;
- and
- passing currents through the plurality of second welding electrodes in contact with the metal member from the first welding electrode via the lead wire and the metal member;
- wherein
- in the step of passing currents through the plurality of second welding electrodes, each of the plurality of second welding electrodes are biased upward and into contact with the metal member by springs.
A resistance welding apparatus, comprising:
- a welding power source;
- a first welding electrode for clamping a lead wire;
- and
- a plurality of second welding electrodes;
- wherein
- the first welding electrode and the second welding electrodes are connected to the welding power source, and by passing currents through the second welding electrodes from the first welding electrode via the lead wire and a metal member, the lead wire and the metal member are bonded to each other via resistance welding;
- and
- the resistance welding apparatus further comprises an inspection lead-wire chuck for checking a bonding strength between the lead wire and the metal member by clamning and pulling the lead wire.
A resistance welding apparatus, comprising:
- a welding power source;
- a first welding electrode for clamping a lead wire;
- a plurality of second welding electrodes;
- and
- springs for biasing the plurality of second welding electrodes upward;
- wherein
- the first welding electrode and the second welding electrodes are connected to the welding power source, and by passing currents through the second welding electrodes from the first welding electrode via the lead wire and a metal member, the lead wire and the metal member are bonded to each other via resistance welding.
Dependencies are inferred from the claim text.