Electric heating – Metal heating – For bonding with pressure
Patent
1982-01-08
1985-02-19
Envall, Jr., Roy N.
Electric heating
Metal heating
For bonding with pressure
219 85G, B23K 1110
Patent
active
045007683
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns an electrode mounting support for a welding or soldering apparatus, which includes a conveyor carriage including an electrode holder that is vertically movable with regard to the electrode working area and has a force measurement device for measuring the force between the electrode and a workpiece.
PRESENT STATE OF TECHNOLOGY
A welding installation is known from DE-OS No. 27 38 854 which includes a supply sled. This device is powered to move the conveyor carriage and also includes an electrode holder; the latter also being movable lineally with respect to the supply sled. A spring arrangement, between the electrode holder and supply sled, takes up the force between the electrode and the workpiece. The electrode force from the relative displacement of the electrode holder and supply sled can be regulated with the aid of a dial control. With the aid of an adjusting element, the pretension of the spring can be adjusted between the supply sled and electrode holder. This device has a major disadvantage in that different electrodes with different working areas (depending on their use) can be used, but with the changing of the electrodes, requirements for equal pressure have to be taken into account and the operator might take a correspondingly altered reading or change the preloading of the spring. This necessitates relatively high skill requirements for the operator.
DESCRIPTION OF THE INVENTION
The aim of the present invention is to create an electrode mounting support of the above-mentioned type in which the electrodes can be changed without any difficulties, and where the operator does not have to consider the regulated force required for different electrodes. This is accomplished by the electrode mounting support being constructed as a removable fixed head in relation to a conveyor carriage, with at least one mounting part movably mounting the electrode mounting to support the conveyor carriage. A force measurement device is disposed between the holder and the mounting part. The force measurement device includes a spring element which can be exchanged by means of a removable support part mounted on the holder or mounting part. When the electrodes have to be exchanged, the whole head with the force measurement device and a specific spring can be exchanged, or in an alternate embodiment, at least the spring element can be exchanged.
Preferably, the holder on the mounting part is guided lineally and vertically to the electrode working area. Therefore, with such a head, the electrodes are brought into contact without any rotational movement being imparted to the workpiece.
As a force measurement device, an intermediate holder and a mounting part is preferably provided along with an inductive displacement pickup acting with a spring arrangement. With a raised electrode, the provision of a spring element between the mounting portion and holder ensures that the holder is maintained in a floating condition with regard to the mounting parts.
Especially for aperture welding electrodes, it is proposed that the mounting part includes at least an intermediate holder which supports an electrode holder whereby the intermediate holder can be regulated on the mounting part parallel to the electrode working area, preferably through linear displacement. As a result, two parts are provided which are movable in the desired direction relative to each other and on each an electrode can be mounted whose distance can be adjusted by the intermediate holder. Preferably, a force measurement device is also placed on the intermediate holder and electrode holder, especially when it is necessary to specifically regulate the force at each electrode, such as with aperture welding electrodes. When two intermediate holders are provided on the mounting part, which can be positioned symmetrically in a direction parallel to the electrode working area by means of an adjusting element, displacing of the electrode symmetrically is possible.
By the use of the mentioned inductive displacement pickup, the result is
REFERENCES:
patent: 2179326 (1939-11-01), Eckman
patent: 2286104 (1942-06-01), Platz
patent: 3234354 (1966-02-01), Penberg
patent: 3475582 (1969-10-01), Cox et al.
patent: 3727822 (1973-04-01), Umbaugh
patent: 4229637 (1980-10-01), Dederer et al.
Envall Jr. Roy N.
Keve Alfred S.
Rossell Electronique SA
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