CN2277846Y - Rolle wheel shape electrode and stator - Google Patents

Abstract

The utility model relates to a rolling wheel electrode roller which utilizes a seam resistor to carry out weld for an overlapped metal plate during the moulding of a tank body. In order to work under the harsh condition that tanks can be rapidly made through high current in a small size, the prior art uses liquid metal mercury or secondly only uses gallium to replace the mercury, and the mercury is toxic and the gallium used alone is easy to corrode. Because of using different liquid electricity conducting material, the utility model provides the innocuous and non-poisonous rolling wheel electrode roller with long service life; the utility model also uses a solid conducting ring and liquid electricity conducting material, and the rotor of the utility model uses material with high lubrication, high hardness and good electric conductivity. The favorable waterway structure of the utility model can ensure cooling at room temperature.

Description

Circular electrode rolls and fixed stator

The utility model relates to a kind of when metal can is shaped, and rolls and fixed stator for the coincidence part with its side seam utilizes seam resistance to weld the circular electrode that uses.

In the technology in the past, be to make metallic plate circular earlier,,, and roll by the circular electrode of its within and without its cramping, energising are welded by the copper cash electrode then to its seam coincidence part.Used electrode rolls when utilizing seam resistance to make tank body, and its standing part 4 is enclosed the liquid metals mercury with electric conductivity with the slight void portion of periphery rotor 2 and 3.

Exist following shortcoming in the above-mentioned technology:

1. owing to use mercury, when raising, temperature will produce toxic gas, so will use 5～8 ℃ cold water by cooler as conductive material.

2. when poorly sealed, mercury can flow out to the outside of roller.

3. because the electric conductivity not good (resistivity is 96 μ Ω cm) of mercury, in the time of be by big electric current, just require big conduction volume.

4. owing to only used with gallium and be conductive material, just must prevent the surface treatment of metal erosion as the low alloy that dissolves of main body.

5. it is big to prevent that mercury from leaking the rotational resistance of employed rubber packing material, thereby rotating torques is big.

6. the joint of left and right sides rotor connects by screw, silver soldering, and its electric conductivity and heat conductivity are not good.

7. when only using gallium alloy as conductive material, it is complicated that structure just becomes, and encloses the surface treatment in hole and also will be paid special attention to.

The purpose of this utility model is to provide the wear-resistant and circular electrode that conduct electricity very well of a kind of nontoxic, no burn into to roll and fixed stator.

The utility model is for achieving the above object, conducting ring is put in gap between rotor and stator, it is to keep suitably contacting with both sides' total surface, have and to make itself and the rotor inner surface slick and sly ripple that slides under low contact force, stator is necessary the contact pressure and the contact area that keep bigger, therefore the water route in stator is several radial holes, and stopple then is an orbicule etc.Be the slide area on the contact area of guaranteeing terminal, 3 places are provided with the different conducting ring of bellows-shaped respectively around stator, and its and stator are adjacent to, and with the polished inner surface of rotor maintenance tension force.

In addition, (number μ mm) has excellent conducting performance as the fluorocarbon oil film of conductive material, goes up more to reducing the sliding-frictional resistance of conducting ring, is mixed with the superfine powder of silver in oil, makes electric conductivity further improve.

Outside at above-mentioned fluorocarbon oil silver also is covered with the silicone oil that is mixed into the graphite superfine powder.

Have again, to low molten metal based on gallium, for example the mixture with Ga 62.3%, In20.5%, Sn 8.5%, Zn 3.8%, Ag 4.4%, Al 0.5% is the center, coat above-mentioned class oil in its outside, then it is enclosed the slip side of conducting ring and do not have the gap of conducting ring, seal with two lower resistance teflon seal spares in both sides again.So just having formed circular electrode rolls.

Also have, the joint of left and right rotor by friction press, 2 fluidity metal bond agent connect, so can save seal such as annular.

Like this, circular electrode of the present utility model rolls, and only depends on conducting ring just to have sufficient electric conductivity, and adds that than mercury silver, the graphite of better electric conductivity, the effect of gallium are arranged, and just makes this electrode roll and have high electric conductivity again in nontoxic situation.

The electric current that the stator two ends are flow through flows through rotor from stator through conducting ring and is communicated with wiring duct.The gallium that is being coated by fluorocarbon oil silver and silicone oil graphite is because of not directly and Metal Contact such as copper alloy, so can not take place corrosion of metal.

Come embodiment of the present utility model is described below by accompanying drawing.

Fig. 1 is the half sectional view that circular electrode rolls.

Fig. 2 is the cutaway view of welding with the articulated type connector.

Symbol is among the figure:

The A-conductive material

The wire insertion slot of B-electrode

The C-cooling water channel

The 1-conducting ring

The 2-left rotor

3-turns right sub

The 4-stator

The 5-seal

The 6-dead ring

The 7-bearing

The 8-insulating packing

The 9-spheroid

10-bearing locating snap ring

The 11-left terminal

The 12-right terminal

Among Fig. 1,, left rotor (2) is rotated with the son (3) of turning right from the electric current that the circumferential groove (B) as the left rotor (2) of rotary body flows out.It is to flow to conducting ring (1) and conductive material (A) as the stator (4) of fixed body from central division.Conducting ring (1) is the leaf spring type corrugated ring, is keeping contacting with the polished inner surface and the stator of rotor, and the gap of its periphery then is filled with conductive material.Conductive material is the mixture that is mixed into the superfine powder of silver in fluorocarbon oil, and in order to improve lubricity, also puts into the mixture of the superfine powder of silicone oil and graphite, and heart portion then puts into the low alloy that dissolves of gallium therein.

The leaf spring type conducting ring by refined copper thin plate and oxygen-free copper thin plate press forming, for keeping tension force, also has silver-plated surface.As the conducting ring of conductive bodies, it is left and right, periphery is pressed into 3 kinds of different shapes, is corrugated.

Playing the conductive material of additional conductive effect and only put into minimum amount, is the filler as the gap.What the stator of standing part (4) used is the very high chrome copper of electric conductivity.For making the water that provides by centre bore can reach conductive material nearby, adopted the shape water route, teflon bulb stopper is used in its end, when preventing to leak, has also strengthened conductive surface area like this.The left rotor of rotating part (2) electric conductivity is very high, and resistivity is 13.2 μ Ω cm, usefulness be that high rigidity (HRC38), lubricity are good, antifriction consumes bronze aluminium.Also fine (1 ℃ of the 0.16ca-1seccm-1), thereby the heat of weld part can be absorbed by cooling water of the heat conductivity of this material in addition.And 50 kilograms the abrasion at electric wire position of rotor that can also prevent to bear a heavy burden.

Right-hand rotation (3) of rotating part, use be the brass or the non-magnetic stainless steel material that can keep rigidity.Left and right sides rotor is being supported by two spring bearings (7) by dead ring (6).For preventing that the conductive material that is contained in space part from leaking, and is equipped with teflon lippacking (5).

Shown in Fig. 2 is about being the embodiment that uses on the welding robot of compound action.Illustrated is at place that can not the installing high-current cable, the articulated type connector of directly switching on from bonding machine.Hold the Spherical Clearance place of shape right terminal (12) at sphere shape left terminal (11) and sphere, owing to enclosed conductive material (A), rotary oscillation on one side just, keep switching on one side.This is one does not need the example with cable.

According to above explanation, circular electrode of the present utility model rolls the sliding conduction of having guaranteed by solid, simultaneously owing to enclosed liquid conductive material at the solid gap location, make and obtaining under the situation of high electric conductivity, this liquid also can reduce the contact resistance of solid greatly in conduction, the abrasion of conducting ring are reduced, the abrasion of rotor are reduced, thereby obtain the effect that the long-life circular electrode rolls.

And this circular electrode rolls, and do not have the toxicity of mercury; Even its conducting ring wearing and tearing, because the event of conductive material is arranged, its electric conductivity can not reduce; Its low torque running for a long time; Even the temperature that electrode rolls rises, because of do not have mercury from but safe; Because the temperature of its cooling water needs not to be such up to now low temperature, just do not need to use water chiller, and cool off just enough with the water of 10 ℃～50 ℃ of water temperatures.

Claims (2)

1. a circular electrode rolls and fixed stator, comprise standing part and the rotating part that can rotate freely along the standing part periphery, it is characterized in that, in the gap that between this standing part and rotating part, forms, several pressboard conducting rings have been enclosed, in the gap of conducting ring, supplementary means as conduction, enclosed again in a small amount be the low alloy that dissolves that the several metal of main component mixes with the gallium, coating the conductive oil of fluorocarbon oil silver and silicone oil graphite mixed liquor in this low outside that dissolves alloy.

2. a kind of circular electrode according to claim 1 rolls and fixed stator, it is characterized in that, the cooling water channel of this standing part, by radial several vertical holes, cross-drilled hole link from central division, aperture end in the hole, water route of returning centre bore prevents to leak with pole plug or bulb stopper.

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