CN103056503A

CN103056503A - Seam welder rolling wheel electrode holder device

Info

Publication number: CN103056503A
Application number: CN2012105474096A
Authority: CN
Inventors: 刘国瑛
Original assignee: GUANGZHOU SONGXING WELDING EQUIPMENT CO Ltd
Current assignee: Guangzhou Songxing Electric Co ltd; Guangzhou Songxing Electrical Co ltd
Priority date: 2012-12-17
Filing date: 2012-12-17
Publication date: 2013-04-24
Anticipated expiration: 2032-12-17
Also published as: CN103056503B

Abstract

The invention discloses a seam welder rolling wheel electrode holder device and relates to the technical field of seam welders. The device comprises a rolling wheel, a rotating shaft, electric conduction sliding blocks, electric conduction wedge blocks, an electric conduction casing, a pull rod, a pressure spring, a rolling bearing, an insulation sleeve, a seal ring, a transmission gear and the like. The device is characterized in that upper and lower electric conduction wedge blocks on left and right sides are in a series connection through the pull rod, the electric conduction wedge blocks can be closely contacted with a casing and the electric conduction sliding blocks under the action of the pressure spring, inner side arc surfaces of the electric conduction sliding blocks are forced to be tightly attached to the rotating shaft, a self-locking function is achieved by an inclined surface, the contact is reliable and stable, the carrying capacity of the novel device is greatly improved, the service life of the novel device is greatly prolonged, and defects existing in prior art are effectively overcome by the improved structure.

Description

Seam welder circular electrode base device

Technical field

The invention belongs to industrial manufacturing technology, relate to the technical field of seam welder.Seam welder circular electrode base device is the critical component of resistor welding line welder low-voltage and high-current transmission, and the electric current of the secondary output of welder transformer has realized that by this device roller conducting welds to workpiece.

Background technology

The conduction of seam welder roller is that the sliding-contact of main shaft and static conductive slider by rotation comes delivered current, on traditional structure, the main shaft of slide block and rotation should keep sliding-contact, need again simultaneously and conduction transition block maintenance Static Contact, or with the soft copper sheet and fixedly conductive shell be flexible coupling, like this could be with the current delivery of conductive shell to the roller that rotates, slide block is directly held out against to keep to contact by spring 21 and spring 26, see Fig. 1 and Fig. 2, when it is subject to the factor affecting such as electromagnetic force of the vibrations of transmission process or galvanization, because slide block is in unsteady labile state, make the poor reliability of conducting surface contact, can not effectively transmit large electric current, reduce the load capacity of circular electrode base device, directly had influence on the stable of transmission current, and because the conducting surface loose contact produces spark phenomenon, also can cause the damage of circular electrode base device, this is the weak point of prior art existence just.

Summary of the invention

The object of the invention is to by improving structure, improve the conductive contact reliability of conductive slider and rotating shaft, conductive shell and the stability of roller delivered current, make the load capacity of circular electrode base device improve 1.5～2 times, can be when rotating speed be 20r/mim, load current reaches 16～20kA, prolong 3～4 times service life, fault-free is used more than the 10000h.

Structure of the present invention is that seam welder circular electrode base device is comprised of roller, rotating shaft, conductive slider, conduction voussoir, conductive shell, pull bar, compression spring, rolling bearing, insulation sleeve, sealing ring, travelling gear etc.Wherein: front axle head, travelling gear that roller is fixed on rotating shaft are fixed on rear axle head, rotating shaft is bearing on the conductive shell by two rolling bearings, outer ring installing insulating cover and the conductive shell isolated insulation of rolling bearing, two conductive sliders are close to respectively the left and right sides of rotating shaft, be installed between conductive slider and the conductive shell after the conduction voussoir penetrates pull bar and compression spring and form Static Contact, sealing ring is installed in the outside of rolling bearing.

Conductive slider is symmetrically distributed in the rotating shaft left and right sides, having four conduction voussoirs divides up and down each one to be symmetrically distributed in the conductive slider outside, and be close to the conductive shell inboard, the conduction voussoir of arranging up and down is cascaded by pull bar, and apply certain pressure by compression spring, at the conductive slider intrados, can inlay the thick silver bullion of 2～3mm for improving electric conductivity.

Conductive shell and interior of rotating shaft are provided with cooling-water duct, by cooling water conductive shell are conducted electricity the heat that voussoir, conductive slider and rotating shaft produce when the delivered current and in time take away.

Operation principle is: conductive shell is by a pair of roller bearings rotating shaft, roller and rotating shaft are rigidly connected, because the electric current of conductive shell can not send rotating shaft to by rolling bearing, need to pass to rotating shaft by conduction voussoir and conductive slider, the top of conductive slider has gathering sill can effectively prevent endwisely slipping of conductive slider, the inboard of conductive slider is an arc surface, thereby its when axle rotate maintenance sliding-contact consistent with the curved surface of rotating shaft, the conductive slider outside is a cammed surface, it forms Static Contact by conduction voussoir and conductive shell and conducts electricity, but utilize pull bar and compression spring to make the conduction voussoir produce the lateral pressure of a self-locking to conductive slider, the Long Term Contact wearing and tearing make conductive slider with rotating shaft in the situation that still can be kept stable contact pressure and good contacting, in addition, for the ease of making processing, I﹠M, the spy makes split type connection with conductive shell left and right sides plate, rolling bearing insulate with insulation sleeve and conductive shell, effectively avoid bearing to burn out, rotating shaft and conductive shell all are connected with cooling-water duct, need the position of sealing to seal with sealing ring.

The invention effect

Show from above-mentioned operation principle, but the good contact key of guaranteeing conductive slider and rotating shaft is to utilize pull bar and compression spring to make the conduction voussoir produce the lateral pressure of a self-locking to conductive slider, and conductive slider, the conduction voussoir is keeping relative static contact with the conductive shell three, the possibility of quick condition can not appear in conductive slider, conductive slider and rotating shaft just can keep reliable sliding-contact, the electric current of transmission is brought up to 16～20kA from 8～10kA and also can not produced the sparking damage device, simultaneously because the contact of conductive slider and rotating shaft is kept constant, make the no-failure life of auto levelizer from 2500～3000h, extend to more than the 10000h, therefore of the present invention by improving structure, effectively overcome the deficiency of prior art.

Description of drawings

Fig. 1 is the circular electrode holder structure of original technology, along Fig. 2 A-A cutaway view

Fig. 2 is the left view of Fig. 1, and along Figure 1B-B cutaway view, wherein: 21--spring, 22--pull bar, 23--conduct electricity transition block, 24--rotating shaft, 25--conductive slider, 26--spring;

Fig. 3 is front view of the present invention, along Fig. 4 C-C cutaway view;

Fig. 4 is Fig. 3 left view, along Fig. 3 D-D cutaway view.

The specific embodiment

As shown in Figure 3 and Figure 4, seam welder circular electrode base device is comprised of roller 1, rotating shaft 2, conductive slider 10, conduction voussoir 9, conductive shell 3, pull bar 8, compression spring 11, rolling bearing 5, insulation sleeve 4, sealing ring 6, travelling gear 7 etc.Wherein: front axle head, travelling gear 7 that roller 1 is fixed on rotating shaft 2 are fixed on rear axle head, rotating shaft 2 is bearing on the conductive shell 3 by two rolling bearings 5, outer ring installing insulating cover 4 and conductive shell 3 isolated insulations of rolling bearing 5, two conductive sliders 10 are close to respectively the left and right sides of rotating shaft 2, be installed between conductive slider 10 and the conductive shell 3 after conduction voussoir 9 penetrates pull bar 8 and compression spring 11 and form Static Contact, sealing ring 6 is installed in the outside of rolling bearing 5.

Conductive slider 10 is symmetrically distributed in rotating shaft 2 left and right sides, have four conduction voussoirs 9 minutes up and down each one be symmetrically distributed in conductive slider 10 outsides, and be close to conductive shell 3 inboards, the conduction voussoir of arranging up and down is cascaded by pull bar 8, and apply certain pressure by compression spring 11, at conductive slider 10 intrados, can inlay the thick silver bullion of 2～3mm for improving electric conductivity.

Conductive shell 3 is provided with cooling-water duct with rotating shaft 2 inside, by cooling water the heat that conductive shell 3 conduction voussoirs 9, conductive slider 10 and rotating shaft 2 produce when the delivered current is in time taken away.

The conducting process of circular electrode base device from the housing to the roller is such:

Pass to the electric current of housing from the outside at first by transmitting with the flat contacts side surfaces of conduction voussoir, prism through the conduction voussoir contacts conduction with the outer inclined-plane of conductive slider again, at last contact conduction by the sliding intrados of conducting block with rotating axial plane, thereby so that electric current be delivered on the roller of rotation from static housing.

The voussoir that conducts electricity up and down is cascaded by pull bar, under the effect of compression spring, respectively with housing and conductive slider close contact, and force the inboard cambered surface of conductive slider to be close to rotating shaft, utilize the inclined-plane to produce self-locking action, so that this contact is more reliable and stable.

Claims

1. seam welder circular electrode base device, by roller (1), rotating shaft (2), conductive slider (10), conduction voussoir (9), conductive shell (3), pull bar (8), compression spring (11), rolling bearing (5), insulation sleeve (4), sealing ring (6), the compositions such as travelling gear (7), it is characterized in that: roller (1) is fixed on the front axle head of rotating shaft (2), travelling gear (7) is fixed on rear axle head, rotating shaft (2) is bearing on the conductive shell (3) by two rolling bearings (5), the outer ring installing insulating cover (4) of rolling bearing (5) and conductive shell (3) isolated insulation, two conductive sliders (10) are close to respectively the left and right sides of rotating shaft (2), be installed between conductive slider (10) and the conductive shell (3) after conduction voussoir (9) penetrates pull bar (8) and compression spring (11) and form Static Contact, sealing ring (6) is installed in the outside of rolling bearing (5).

2. seam welder circular electrode base device according to claim 1, it is characterized in that conductive slider (10) is symmetrically distributed in rotating shaft (2) left and right sides, have four conduction voussoirs (9) minute up and down each one be symmetrically distributed in conductive slider (10) outside, and be close to conductive shell (3) inboard, the conduction voussoir of arranging up and down is cascaded by pull bar (8), and apply certain pressure by compression spring (11), at conductive slider (10) intrados, inlay the thick silver bullion of 2～3mm.

3. seam welder circular electrode base device according to claim 1, it is characterized in that conductive shell (3) and rotating shaft (2) inside are provided with cooling-water duct, by cooling water the heat that conductive shell (3) conduction voussoir (9), conductive slider (10) and rotating shaft (2) produce when the delivered current is in time taken away.