Spot welding electrode protector
A protection device, spot welding electrode technology, applied in welding equipment, resistance welding equipment, metal processing equipment and other directions, can solve the problems of large volume, complex structure, unreasonable detail design, etc., to achieve small size, simple structure, easy to use. effect of implementation
Inactive Publication Date: 2012-10-24
TIANJIN UNIV
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Problems solved by technology
The above-mentioned resistance spot welding electrode life extension device has complex structure, large volume, and unreasonable detail design, for example, the step counting device is not accurate, which makes it impossible to install it in the corresponding equipment
Method used
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[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0033] The spot welding electrode protection device of the present invention is composed of two groups of protection units with the same structure and respectively fixing upper and lower electrodes. The following takes one of the protection units as an example to describe in detail.
[0034] like Figure 2-3 and Figure 2-4 As shown, the protection unit includes a support body 103, the top of the support body 103 is a fork structure, and one end of the support body 103 is provided with a mobile support 101 that is fixedly connected with the electrode 130 and can move up and down; The bottom of support body 103 is " door " word frame 105, and described " door " word frame 105 is provided with the inner support 113 that can move up and down, and the bottom of described " door " word frame 105 is provided with base 114, and described b...
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Abstract
The invention discloses a spot welding electrode protector which comprises two groups of protecting units, wherein the two groups of protecting units have the same structure and are used for fixing an upper electrode and a lower electrode respectively; each protecting unit comprises a support body, and one end of the support body is provided with a movable support which is fixedly connected with electrodes and can move up and down; the lower part of the support body is provided with a portal frame, the portal frame is internally provided with an inner support which can move up and down, the bottom of the portal frame is provided with a base, and the bottom surface of the base is coated with an insulating coating; the inner support is internally provided with a transverse shaft which is fixedly connected with a pair of gears and is provided with a replaceable metal piece, and the two sides of the transverse shaft are provided with racks which are matched with the pair of gears; the pair of gears are provided with ratchet pawl mechanisms, pawls in the ratchet pawl mechanisms are connected with the support bodies via tension springs, and the pawls are pressed on the gear teeth of theratchet wheels at any time under the tension of the tension springs; and the ratchet pawl mechanisms drive the two gears to rotate, and the two gears drive the metal piece to move. By the invention, the defects of the electrodes such as alloying, abrasion, pointed corrosion, thermal fatigue and the like can be reduced, and the service life of the electrodes can be prolonged, thus achieving the aim of electrode protection.
Description
technical field [0001] The invention relates to a device for improving the service life of spot welding electrodes, in particular to a spot welding electrode protection device. Background technique [0002] At present, in modern aviation, automobile and home appliance industries, galvanized steel sheets and aluminum alloy sheets with better anti-rust ability and long service life are increasingly used. Due to the extensive use of thin plate structures, spot welding is generally used to obtain good welding quality during welding. [0003] In the spot welding process, the main function of the spot welding electrode is to transmit current, pressurize and dissipate heat. The welding current during spot welding can be as high as thousands to tens of thousands of amperes, the electrode pressure can reach hundreds of MPa, and the diameter of the electrode head will be It will increase with the increase of the electrode use time, which will lead to a decrease in the current density...
Claims
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IPC IPC(8): B23K11/36
Inventor 罗震刘伟孟繁亮左迪
Owner TIANJIN UNIV