CN117226234A - Double-head floating type welding machine and welding method - Google Patents

Abstract

The invention discloses a double-head floating welding machine, which comprises a frame, wherein a first linear guide rail and an adjusting mechanism are arranged on the frame, and floating mechanisms are respectively arranged at two ends of the frame; the two groups of floating mechanisms are oppositely arranged and are respectively connected with the first linear guide rail and the adjusting mechanism, and the adjusting mechanism drives the two groups of floating mechanisms to move oppositely or back to back on the first linear guide rail; the floating mechanism is provided with an outer electrode group and an inner electrode group, and the outer electrode group and the inner electrode group are oppositely arranged. According to the double-head floating type welding machine, the distance between the two groups of floating mechanisms is adjusted through the adjusting mechanism, so that workpieces with different sizes can be welded conveniently, one device is used for welding the workpieces with different sizes, the device is not required to be replaced, the cost is reduced, and the adaptability of the welding machine is improved; meanwhile, the floating mechanism can also avoid excessive extrusion of the welding part and the workpiece during welding, so that the welding quality of the workpiece is improved.

Description

Double-head floating type welding machine and welding method

Technical Field

The invention relates to the technical field of welding, in particular to a double-head floating type welding machine and a welding method.

Background

The butt welding machine is also called a resistance welding machine, and the two metals contacted with each other are melted and fused through resistance heat at the moment through instant high voltage and high current, so that the aim of welding the two metals together is fulfilled. Welding is a common technological process in the metal production and processing process, and the quality of welding directly determines the final quality of the product.

At present, when articles for daily use such as stainless steel barrels, pans and the like are manufactured, handles are required to be welded on two sides of the articles for daily use respectively, and a traditional welding method is to use manual operation, wherein the handles on one side are welded firstly, and then the handles on the other side are welded, but the manual welding has the defects of low efficiency, large quality fluctuation and the like. With the progress of technology, the traditional manual welding method is gradually replaced by an automatic equipment welding method, and when the existing automatic welding equipment is used for welding articles for daily use such as stainless steel barrels, pots and the like, workpieces with different sizes cannot be welded through one piece of equipment, and the welding quality cannot be guaranteed, so that a new welding equipment is designed by the creator aiming at the improvement, so that the quality of the articles for daily use such as the stainless steel barrels, the pots and the like during welding is guaranteed.

Disclosure of Invention

The invention aims to provide a double-head floating type welding machine and a welding method, which have good adaptability and can improve welding quality.

In order to solve the technical problems, the invention can be realized by adopting the following technical scheme:

the double-head floating type welding machine comprises a frame, wherein a first linear guide rail and an adjusting mechanism are arranged on the frame, and floating mechanisms are respectively arranged at two ends of the frame;

the two groups of floating mechanisms are oppositely arranged and are respectively connected with the first linear guide rail and the adjusting mechanism, and the adjusting mechanism drives the two groups of floating mechanisms to move oppositely or back to back on the first linear guide rail;

the floating mechanism is provided with an outer electrode group and an inner electrode group, and the outer electrode group and the inner electrode group are oppositely arranged.

In one embodiment, the floating mechanism comprises a base, a driving piece and a floating group, wherein the base is arranged on the first linear guide rail, the driving piece is arranged at one end of the base, and the inner electrode group is arranged at the other end of the base;

the middle part of the seat body is provided with a second linear guide rail, the second linear guide rail is provided with a movable seat, the movable seat is connected with a driving piece, the outer electrode group is arranged on the movable seat, and the driving piece drives the movable seat to move on the second linear guide rail so that the outer electrode group and the inner electrode group move oppositely or back to each other;

the floating group is arranged at the bottom of the seat body and is connected with the adjusting mechanism.

In one embodiment, the moving seat comprises a first moving seat and a second moving seat, the first moving seat and the second moving seat are arranged on the second linear guide rail side by side, a sliding rod is arranged between the first moving seat and the second moving seat, one end of the sliding rod is abutted to the second moving seat, the first moving seat is sleeved on the sliding rod and can slide along the sliding rod, a first elastic piece is sleeved on the sliding rod, and two ends of the first elastic piece are respectively abutted to the first moving seat and the second moving seat.

In one embodiment, the outer electrode assembly includes a first outer weld joint disposed on the first movable mount and a second outer weld joint disposed on the second movable mount, the first outer weld joint being located above the second outer weld joint.

In one embodiment, the inner electrode group comprises an inner welding head, and the inner welding head is respectively opposite to the first outer welding head and the second outer welding head and is mutually matched for welding.

In one embodiment, the floating group comprises an adjusting plate, a floating rod and a fixing plate, wherein the fixing plates are provided with two fixing plates and are respectively arranged at the bottom of the seat body, the floating rod is positioned between the two fixing plates, one end of the adjusting plate is sleeved with the floating rod, the other end of the adjusting plate is connected with the adjusting mechanism, a second elastic piece is sleeved on the floating rod, and two ends of the second elastic piece are respectively abutted to the adjusting plate and one fixing plate.

In one embodiment, the adjusting mechanism comprises a servo motor and a screw, one end of the screw is connected with the servo motor, the adjusting plate is sleeved on the screw, the servo motor drives the screw to rotate, and the adjusting plate moves on the screw when the screw rotates.

In addition, the invention also provides a welding method of the double-head floating type welding machine, which comprises the following steps:

s1, adjusting the space between the two groups of floating mechanisms through an adjusting mechanism to enable the space to correspond to a workpiece;

s2, respectively placing two sides of a workpiece between an outer electrode group and an inner electrode group on the two groups of floating mechanisms, and placing welding parts on the outer electrode groups;

s3, the driving piece drives the welding part on the outer electrode group to move towards the direction of the workpiece until the outer electrode group cannot move forwards any more after the welding part is abutted against the outer side wall of the workpiece;

s4, the driving piece continuously drives the outer electrode group, at the moment, the outer electrode group cannot move, and the reaction force drives the floating mechanism to drive the inner electrode group to move towards the inner side wall of the workpiece until the inner electrode group is abutted with the inner side wall of the workpiece;

s5, when the outer electrode group drives the welding component to be abutted against the outer side wall of the workpiece and the inner electrode group is abutted against the inner side wall of the workpiece, the outer electrode group and the inner electrode group work to weld the workpiece and the welding component.

In one embodiment, in S2, the welding component may be placed on the outer electrode group on one of the sets of floating mechanisms, or on both sets of floating mechanisms.

The beneficial effects of the invention are as follows:

1. the two ends of the frame are respectively provided with the floating mechanisms, and the two groups of floating mechanisms are driven to move in opposite directions or back directions on the first linear guide rail through the adjusting mechanism, so that workpieces with different sizes can be welded, and the adaptability of the floating welding machine is improved;

2. the welding quality is improved, the driving piece drives the outer electrode group to move towards the direction of the inner electrode group, so that after two workpieces to be welded are abutted, the outer electrode group cannot move any more, the driving piece can continue to work, at the moment, the reaction force drives the floating mechanism to drive the inner electrode group to move towards the direction of the outer electrode group until the outer electrode group and the inner electrode group are respectively contacted with the two workpieces, the welding is finished, and in the welding process, the outer electrode group on the two floating mechanisms cannot cause extrusion deformation on the workpieces, so that the welding quality of the workpieces can be improved;

3. the welding modes are diversified, the side edges of the workpiece can be independently welded through the two groups of floating mechanisms, and the outer electrode group and the inner electrode group which are arranged on the floating mechanisms, the two sides of the workpiece can be welded successively, the two sides of the workpiece can be welded simultaneously, and finally, the welding modes of the floating welding machine are diversified.

Drawings

FIG. 1 is a schematic diagram of a double-ended floating welder of the present invention;

FIG. 2 is a schematic view of the structure of an adjustment mechanism in the double-head floating welder of the present invention;

FIG. 3 is a schematic view of the structure of the floating mechanism in the double-head floating welder of the present invention;

FIG. 4 is a schematic view of a mobile seat in a double-head floating welder according to the present invention;

FIG. 5 is a schematic view of the structure of a floating group in a double-head floating welder according to the present invention;

FIG. 6 is a schematic view of the working state of the double-head floating type welding machine of the present invention.

As shown in the accompanying drawings:

100. a frame;

200. a first linear guide rail;

300. an adjusting mechanism; 310. a servo motor; 320. a screw;

400. a floating mechanism; 410. a base; 420. a driving member; 430. a floating group; 431. an adjusting plate; 432. a floating rod; 433. a fixing plate; 434. a second elastic member; 440. a second linear guide rail; 450. a movable seat; 451. a first movable seat; 452. a second movable seat; 453. a slide bar; 454. a first elastic member;

500. an outer electrode group; 510. a first outer weld joint; 520. a second outer weld joint;

600. an inner electrode group; 610. an inner welding head;

700. a workpiece;

800. and welding the parts.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, 2 and 6, a double-head floating welding machine includes a frame 100, wherein a first linear guide rail 200 and an adjusting mechanism 300 are disposed on the frame 100, and floating mechanisms 400 are disposed at two ends of the frame 100 respectively;

the two sets of floating mechanisms 400 are oppositely arranged and respectively connected with the first linear guide rail 200 and the adjusting mechanism 300, and the adjusting mechanism 300 drives the two sets of floating mechanisms 400 to move oppositely or back to back on the first linear guide rail 200;

the floating mechanism 400 is provided with an outer electrode group 500 and an inner electrode group 600, and the outer electrode group 500 and the inner electrode group 600 are disposed opposite to each other.

Specifically, in this embodiment, the outer electrode group 500 and the inner electrode group 600 are disposed on the floating mechanisms 400 at two ends, during welding, two sides of the workpiece 700 are disposed between the outer electrode group 500 and the inner electrode group 600 of the two groups of floating mechanisms 400 respectively, and the two groups of floating mechanisms 400 can move in opposite directions or opposite directions along the first linear guide rail 200 under the driving of the adjusting mechanism 300, so as to adjust the distance between the two groups of floating mechanisms 400, thereby placing workpieces of different sizes between the two groups of floating mechanisms 400, realizing welding of workpieces 700 of different sizes by one device without changing the device, reducing the cost, and improving the adaptability of the welding machine.

In addition, the two groups of floating mechanisms 400 are adopted in the method, one side of the workpiece 700 can be welded independently during welding, two sides of the workpiece 700 can be welded successively, two sides of the workpiece 700 can be welded simultaneously, so that diversified welding of the floating type welding machine is realized, and welding quality is good.

Referring to fig. 3, in order to realize floating welding of the workpiece 700, the floating mechanism 400 of the present invention includes a base 410, a driving member 420 and a floating group 430, wherein the base 410 is disposed on the first linear guide rail 200, the driving member 420 is disposed at one end of the base 410, and the inner electrode group 600 is disposed at the other end of the base 410; the middle part of the seat body 410 is provided with a second linear guide rail 440, a movable seat 450 is arranged on the second linear guide rail 440, the movable seat 450 is connected with a driving piece 520, the outer electrode group 500 is arranged on the movable seat 450, and the driving piece 420 drives the movable seat 450 to move on the second linear guide rail 440 so as to enable the outer electrode group 500 and the inner electrode group 600 to move oppositely or back to each other; the floating group 430 is disposed at the bottom of the seat 410 and is connected to the adjusting mechanism 300.

When the workpiece 700 is welded, the distance between the two groups of floating mechanisms 400 is adjusted through the adjusting mechanism 300 to enable the distance to correspond to the size of the workpiece 700, then two sides of the workpiece 700 are respectively placed between the outer electrode group 500 and the inner electrode group 600 of the two groups of floating mechanisms 400, the welding part 800 is placed on the outer electrode group 500, the driving piece 420 is started, the driving piece 420 drives the outer electrode group 500 to move forwards, the outer electrode group 500 drives the welding part 800 to move towards the workpiece 700 until the welding part 800 abuts against the outer side wall of the workpiece 700, after the welding part 800 abuts against the outer side wall of the workpiece 700, the outer electrode group 500 can not move any more, but the driving piece 420 continues to work, at the moment, the reaction force of the driving piece 420 can drive the seat 410 to reversely move on the first linear guide rail 200 through the floating group 430, and the seat 410 can drive the inner electrode group 600 to move towards the inner side wall of the outer electrode group 500 until the inner electrode group 600 abuts against the inner side wall of the workpiece 700, and the welding part 800 and the workpiece 700 can be welded after the outer electrode group 500, the welding part 800 and the inner electrode group 600 abut against each other; the floating mechanism 400 can move reversely through the floating set 430 and the first linear guide rail 200, so that excessive extrusion of the outer side wall of the workpiece 700 can be avoided when the driving member 420 drives the outer electrode set 500 to move, and the quality of the workpiece 700 during welding can be improved.

Referring to fig. 4, when welding the welding member 800 to the workpiece 700, since both the upper and lower ends of the welding member 800 are kept in contact with the workpiece 700, the outer electrode assembly 500 in the present invention includes the first outer welding joint 510 and the second outer welding joint 520, and the first outer welding joint 510 is located above the second outer welding joint 520, and when welding, the welding member 800 is placed on the second outer welding joint 520, the upper end of the welding member 800 is pressed by the first outer welding joint 510, and the lower end of the welding member 800 is pressed by the second outer welding joint 520, so that both the upper and lower ends thereof are kept in contact with the workpiece 700, thereby ensuring the welding quality thereof.

Meanwhile, in order to facilitate placing the welding member 800 on the second outer welding head 520 and ensure that the welding member 800 does not excessively squeeze the workpiece 700, the moving seat 450 of the present invention includes a first moving seat 451 and a second moving seat 452, the first moving seat 451 and the second moving seat 452 are disposed on the second linear guide 440 side by side, a sliding rod 453 is disposed therebetween, one end of the sliding rod 453 is abutted to the second moving seat 452, the first moving seat 451 is sleeved on the sliding rod 453 and can slide along the sliding rod 453, a first elastic member 454 is further sleeved on the sliding rod 453, two ends of the first elastic member 454 are respectively abutted to the first moving seat 451 and the second moving seat 452, the first outer welding joint 510 is disposed on the first moving seat 451, and the second outer welding head 520 is disposed on the second moving seat 452.

Because the second outer welding head 520 is located below the first outer welding head 510, and when the welding member 800 is placed, the first outer welding head 510 will keep a certain distance from the second outer welding head 520 under the action of the first elastic member 454 and the first moving seat 451, at this time, the welding member 800 can be conveniently placed on the second outer welding head 520,

after the welding member 800 is placed, the driving member 420 drives the first moving seat 451 to move, and when the first moving seat 451 moves, the second moving seat 452 is pushed to move, so that the second outer welding head 520 drives the welding member 800 to contact with the outer side wall of the workpiece 700, the second outer welding head 520 presses the lower end of the welding member 800, and the driving member 420 continues to drive the first moving seat 451 to move, and when the first moving seat 451 moves, the first elastic member 454 presses the first outer welding head 510 until the upper end of the welding member 800 is pressed, so that the upper end and the lower end of the welding member 800 are pressed by the first outer welding head 510 and the second outer welding head 520, and the pressing force of the first outer welding head 510 and the second outer welding head 520 is kept in a moderate state by the sliding rod 453 and the first elastic member 454, so that the outer electrode assemblies 500 on the two sets of floating mechanisms 400 cannot excessively press and deform the workpiece 700, thereby ensuring good welding quality of the workpiece 700.

Of course, in order to realize the welding function, the inner electrode set 600 of the present invention includes an inner welding head 610, and the inner welding head 610 is disposed opposite to the first outer welding head 510 and the second outer welding head 520, respectively, the first outer welding head 510 and the second outer welding head 520 are abutted against the welding member 800, and the welding member 800 is contacted with the outer side wall of the workpiece 700, and the inner welding head 610 is abutted against the inner side wall of the workpiece 700, so as to realize the welding of the welding member 800 and the workpiece 700.

Referring to fig. 2 and 5, in order to achieve the adjustment of the space between the floating mechanisms 400 and ensure that the floating mechanisms can be welded in a floating manner without excessive extrusion to the workpiece 700, the floating set 430 of the present invention includes two adjusting plates 431, floating rods 432 and fixing plates 433, wherein the fixing plates 433 are respectively disposed at the bottom of the seat 410, the floating rods 432 are disposed between the two fixing plates 433, one end of the adjusting plate 431 is sleeved on the floating rods 432, the other end is connected with the adjusting mechanism 300, a second elastic member 434 is further sleeved on the floating rods 432, and two ends of the second elastic member 434 are respectively abutted against the adjusting plate 431 and one of the fixing plates 433.

The adjusting mechanism 300 comprises a servo motor 310 and a screw 320, one end of the screw 320 is connected with the servo motor 310, an adjusting plate 431 is sleeved on the screw 320, the servo motor 310 drives the screw 320 to rotate, and the adjusting plate 431 moves on the screw 320 when the screw 320 rotates.

When the distance between the two sets of floating mechanisms 400 needs to be adjusted, the servo motor 310 is started to drive the screw 320 to rotate, and when the screw 320 rotates, the adjusting plate 431 is driven to move, the adjusting plate 431 drives the base 410 to move, so that the floating mechanisms 400 integrally move, and finally, the two sets of floating mechanisms 400 move in opposite directions or back directions, so that the distance between the two sets of floating mechanisms 400 is adjusted.

When welding, after the outer electrode set 500 drives the welding part 800 to abut against the outer side wall of the workpiece 700, at this time, the outer electrode set 500 cannot move any more, and the driving part 420 continues to work, by the reaction force of the driving part, the base 410 is driven to move reversely, and when the base 410 moves, the fixing plate 433 drives the floating rod 432 to move on the adjusting plate 431 and extrudes the second elastic part 434, so that the second elastic part 434 compresses, and when the base 410 moves, the inner electrode set 600 is driven to move towards the outer electrode set 500 until the inner welding head 610 of the inner electrode set 600 abuts against the inner wall of the workpiece 700, so that welding is realized, finally, the distance between the floating mechanisms 400 can be adjusted by the adjusting mechanism 300 and the floating set 430, reverse movement of the floating mechanism 400 can be realized, welding of workpieces 700 with different sizes is facilitated, damage caused by excessive extrusion deformation of the workpieces 700 can be avoided, and welding quality is ensured.

In summary, according to the double-head floating type welding machine disclosed by the invention, the distance between the two groups of floating mechanisms 400 is adjusted through the adjusting mechanism 300, so that workpieces 700 with different sizes can be conveniently welded, one device is realized for welding the workpieces 700 with different sizes, the device is not required to be replaced, the cost is reduced, the adaptability of the production is improved, and meanwhile, excessive extrusion deformation of the workpieces 700 by the outer electrode groups 500 on the two groups of floating mechanisms 400 can be avoided during welding through the floating mechanisms 400, so that the welding quality of the workpieces 700 is improved.

In addition, the invention also provides a welding method of the double-head floating type welding machine, which comprises the following steps:

s1, adjusting the space between the two groups of floating mechanisms 400 through the adjusting mechanism 300 to enable the space to correspond to the workpiece 700;

s2, respectively placing two sides of a workpiece 700 between the outer electrode group 500 and the inner electrode group 600 on the two groups of floating mechanisms 400, and placing a welding part 800 on the outer electrode group 500;

s3, the driving piece 420 drives the welding part 800 on the outer electrode group 500 to move towards the direction of the workpiece 700 until the outer electrode group 500 cannot move forwards any more after the welding part 800 is abutted against the outer side wall of the workpiece 700;

s4, the driving piece 420 continues to drive the outer electrode set 500, at this time, the outer electrode set 500 cannot move, and the reaction force drives the floating mechanism 400 to drive the inner electrode set 600 to move towards the inner side wall of the workpiece 700 until the inner electrode set is abutted against the inner side wall of the workpiece 700;

s5, when the outer electrode set 500 drives the welding member 800 to abut against the outer side wall of the workpiece 700 and the inner electrode set 600 abuts against the inner side wall of the workpiece 700, the outer electrode set 500 and the inner electrode set 600 work to weld the workpiece 700 and the welding member 800.

Specifically, when welding the welding member 800 and the workpiece 700, the adjusting mechanism 300 adjusts the distance between the two sets of floating mechanisms 400 to make the distance correspond to the size of the workpiece 700, then the welding member 800 is placed on the outer electrode set 500, then the driving member 420 is started, the driving member 420 drives the outer electrode set 500 to move towards the direction of the workpiece 700 with the welding member 800 until the welding member 800 abuts against the outer side wall of the workpiece 700, at this time, the welding member 800 at both sides abuts against the workpiece 700 and cannot be moved any more, and the driving member 420 continues to work, under the reaction force of the driving member, the floating mechanisms 400 are reversely moved to drive the inner electrode set 600 to move towards the direction of the inner side wall of the workpiece 700 until the inner side wall abuts against the workpiece 700, and then the welding between the welding member 800 and the workpiece 700 can be realized.

In the present invention, the welding member 800 may be mounted to one side of the work 700, or the welding member 800 may be mounted to both sides of the work 700, so that the welding member 800 may be placed on the external electrode group 500 on one of the floating mechanisms 400, or the welding member 800 may be placed on the external electrode group 500 on both of the floating mechanisms 400.

When only one side of the workpiece 700 is required to be provided with the welding part 800, the two sides of the workpiece 700 are firstly placed between the outer electrode group 500 and the inner electrode group 600 of the two groups of floating mechanisms 400, and the welding part 800 is placed on one outer electrode group 500, the driving part 420 of the group of floating mechanisms 400 is started to drive the outer electrode group 500 to move towards the workpiece 700 with the welding part 800 until the welding part 800 is abutted against the workpiece 700, and the other side of the workpiece 700 is blocked by the outer electrode group 500 on the other group of floating mechanisms 400 and cannot move, so that the group of outer electrode groups 500 cannot drive the welding part 800 any more, at this time, the driving part 420 continues to work, and the group of floating mechanisms 400 is reversely moved by the reaction force of the driving part 420 and drives the group of inner electrode group 600 to move towards the inner side wall of the workpiece 700 until the inner wall is abutted against the inner side wall, so that the welding of the single welding part 800 and the workpiece 700 is completed.

When the welding parts 800 are required to be mounted on both sides of the workpiece 700, the two sides of the workpiece 700 are placed between the outer electrode groups 500 and the inner electrode groups 600 of the two sets of floating mechanisms 400, the welding parts 800 are placed on the two sets of outer electrode groups 500, the two sets of driving parts 420 are started, and the outer electrode groups 500 are driven to move towards the workpiece 700 with the welding parts 800 until the two welding parts 800 are respectively abutted against both sides of the workpiece 700, at this time, the workpiece 700 is in a clamped state and cannot move, the two sets of driving parts 420 continue to work, and the two sets of floating mechanisms 400 are reversely moved by the reaction force of the two sets of driving parts, so that the two sets of inner electrode groups 600 are driven to move towards the inner side walls of the workpiece 700 respectively until the two sets of inner electrode groups are respectively abutted against the inner side walls, and the welding of the two welding parts 800 and the workpiece 700 is completed simultaneously.

In addition, when the welding parts 800 are mounted on both sides of the workpiece 700, the welding parts 800 on one side may be welded first, after the welding parts 800 on the one side are welded with the workpiece 700 by the group of floating mechanisms 400, the welding parts 800 on the other side are welded with the workpiece 700 by the other group of floating mechanisms 400, so as to realize the sequential welding of the welding parts 800 on both sides.

Finally, by the welding method, the side edges of the workpiece 700 can be independently welded, the two sides of the workpiece 700 can be welded successively, and the two sides of the workpiece 700 can be welded simultaneously, so that the welding method of the floating type welding machine is more diversified.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art can practice the invention smoothly as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.

Claims (9)

1. The utility model provides a double-end floating welding machine, includes frame, its characterized in that: the frame is provided with a first linear guide rail and an adjusting mechanism, and floating mechanisms are respectively arranged at two ends of the frame;

the two groups of floating mechanisms are oppositely arranged and are respectively connected with the first linear guide rail and the adjusting mechanism, and the adjusting mechanism drives the two groups of floating mechanisms to move oppositely or back to back on the first linear guide rail;

the floating mechanism is provided with an outer electrode group and an inner electrode group, and the outer electrode group and the inner electrode group are oppositely arranged.

2. The double-headed floating welder of claim 1, wherein: the floating mechanism comprises a seat body, a driving piece and a floating group, wherein the seat body is arranged on the first linear guide rail, the driving piece is arranged at one end of the seat body, and the inner electrode group is arranged at the other end of the seat body;

the middle part of the seat body is provided with a second linear guide rail, the second linear guide rail is provided with a movable seat, the movable seat is connected with a driving piece, the outer electrode group is arranged on the movable seat, and the driving piece drives the movable seat to move on the second linear guide rail so that the outer electrode group and the inner electrode group move oppositely or back to each other;

the floating group is arranged at the bottom of the seat body and is connected with the adjusting mechanism.

3. The double-headed floating welder of claim 2, wherein: the movable seat comprises a first movable seat and a second movable seat, the first movable seat and the second movable seat are arranged on the second linear guide rail side by side, a sliding rod is arranged between the first movable seat and the second linear guide rail, one end of the sliding rod is abutted to the second movable seat, the first movable seat is sleeved on the sliding rod and can slide along the sliding rod, a first elastic piece is sleeved on the sliding rod, and two ends of the first elastic piece are respectively abutted to the first movable seat and the second movable seat.

4. A double-ended floating welder as defined in claim 3, wherein: the outer electrode group comprises a first outer welding joint and a second outer welding joint, the first outer welding joint is arranged on the first movable seat, the second outer welding joint is arranged on the second movable seat, and the first outer welding joint is located above the second outer welding joint.

5. The double-headed floating welder of claim 4, wherein: the inner electrode group comprises an inner welding head which is respectively arranged opposite to the first outer welding head and the second outer welding head and is mutually matched for welding.

6. The double-headed floating welder of claim 2, wherein: the floating group comprises an adjusting plate, a floating rod and a fixing plate, wherein the fixing plate is provided with two fixing plates, the fixing plates are respectively arranged at the bottom of the seat body, the floating rod is positioned between the two fixing plates, one end of the adjusting plate is sleeved with the floating rod, the other end of the adjusting plate is connected with the adjusting mechanism, the floating rod is further sleeved with a second elastic piece, and two ends of the second elastic piece are respectively abutted to the adjusting plate and one fixing plate.

7. The double-headed floating welder of claim 6, wherein: the adjusting mechanism comprises a servo motor and a screw rod, one end of the screw rod is connected with the servo motor, the adjusting plate is sleeved on the screw rod, the servo motor drives the screw rod to rotate, and the adjusting plate moves on the screw rod when the screw rod rotates.

8. The welding method of a double-headed floating welding machine according to any one of claims 1-7, comprising the steps of:

s1, adjusting the space between the two groups of floating mechanisms through an adjusting mechanism to enable the space to correspond to a workpiece;

s2, respectively placing two sides of a workpiece between an outer electrode group and an inner electrode group on the two groups of floating mechanisms, and placing welding parts on the outer electrode groups;

s3, the driving piece drives the welding part on the outer electrode group to move towards the direction of the workpiece until the outer electrode group cannot move forwards any more after the welding part is abutted against the outer side wall of the workpiece;

s4, the driving piece continuously drives the outer electrode group, at the moment, the outer electrode group cannot move, and the reaction force drives the floating mechanism to drive the inner electrode group to move towards the inner side wall of the workpiece until the inner electrode group is abutted with the inner side wall of the workpiece;

s5, when the outer electrode group drives the welding component to be abutted against the outer side wall of the workpiece and the inner electrode group is abutted against the inner side wall of the workpiece, the outer electrode group and the inner electrode group work to weld the workpiece and the welding component.

9. The welding method of the double-head floating type welding machine according to claim 8, wherein: in S2, the welding parts may be placed on the outer electrode groups on one of the sets of floating mechanisms, or on the outer electrode groups on both sets of floating mechanisms.