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AssigneeKoninklijke Philips Electronics N.V.
InventorsJohannes Peter Lodevicus Houben, Marinus Adrianus Maria Van De Veerdonk
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The invention relates to a method of operating a welding machine as well as to a welding machine comprising a frame, a first electrode (33) having a fixed position in the frame and a second electrode (35) which is mounted in the frame so as to be movable with respect to the frame, whereby said second electrode (35) can be moved towards the first electrode (33) for welding together components arranged between said two electrodes (33, 35). During displacement of the second electrode (35) from a starting position towards a welding position, the second electrode (35) is moved more rapidly at the beginning of the displacement than at the point where the second electrode is near the position suitable for welding. To obtain said displacement of the second electrode (35), a cam mechanism (10) has been provided between an operating member (12) and a lever (28), which cam mechanism supports the second electrode (35) and is pivotable with respect to the frame.
A method of operating a welding machine comprising a frame, an electrode (33) having a fixed position in the frame and an electrode (35) which has been mounted in the frame so as to be movable with respect to said frame, which latter electrode is moved towards the fixed electrode (33) to weld together components placed between the fixed and the movable electrode, characterized in that during displacing the movable electrode (35) from a starting position to a suitable position for welding, the movable electrode (35) is moved more rapidly at the beginning of the displacement than at a location near the suitable welding position of the movable electrode (35).
A welding machine comprising a frame, an electrode (33) having a fixed position in the frame and an electrode (35) which has been mounted in the frame so as to be movable with respect to said frame, which latter electrode can be moved by means of a manpower operated operating member (2) in the direction of the fixed electrode (33) by means of a transmission mechanism (3-12) arranged between the operating member and the movable electrode, characterized in that the transmission mechanism (3-12) is provided with a cam (10), which can be pivoted around a pivot pin (11) from a starting position through a certain angle by means of the operating member to displace the movable electrode (35) in the direction of the fixed electrode (33), which cam (10) co-operates, during operation, with an adjusting member (12) connected to the movable electrode (35), and the cam (10) and the adjusting member (12) co-operating with said cam being embodied such that at the beginning of the pivotal motion of the cam (10) for displacing the movable electrode (35) in the direction of the fixed electrode (33), the adjusting member (12) is displaced at a higher rate than during the pivotal motion of the cam (10) through the last part of the angle through which the cam (10) is pivotable around the pivot pin (10) for displacing the movable electrode (35) in the direction of the fixed electrode (33).
A welding machine as claimed in any one of the preceding claims, characterized in that the cam (10) is coupled to a lever (4) by means of a coupling rod (8), said lever being swingable with respect to the frame by means of the operating member (2).
A welding machine as claimed in any one of the preceding claims, characterized in that the electrodes (33, 35) are provided so as to be exchangeable.
Dependencies are inferred from the claim text.