Double-head floating welding machine and welding method

Abstract

The present invention discloses a double-head floating welding machine, comprising a frame, wherein the frame is provided with a first linear guide rail and an adjustment mechanism, and floating mechanisms are respectively provided at both ends of the frame; two groups of floating mechanisms are arranged opposite to each other and are respectively connected to the first linear guide rail and the adjustment mechanism, and the adjustment mechanism drives the two groups of floating mechanisms to move toward or away from each other on the first linear guide rail; an outer electrode group and an inner electrode group are provided on the floating mechanism, and the outer electrode group and the inner electrode group are arranged opposite to each other. The double-head floating welding machine of the present invention can adjust the spacing between the two groups of floating mechanisms through the adjustment mechanism, and can facilitate welding of workpieces of different sizes, so that one device can weld workpieces of different sizes without replacing the equipment, thereby reducing costs and improving the adaptability of the invention; at the same time, the floating mechanism can also avoid excessive extrusion of the welding parts and the workpiece during welding, thereby improving the welding quality of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to a double-head floating welding machine and a welding method. Background Art

[0002] Butt welding machines, also known as resistance welding machines, use instantaneous high voltage and high current to melt and fuse two metal surfaces together through resistance heat. Welding is a common process in metal production and processing, and the quality of the weld directly determines the final quality of the product.

[0003] Currently, stainless steel buckets, pots, and other daily necessities require handles to be welded to both sides during production. The traditional welding method involves manual operation, where one handle is welded first, followed by the other. However, manual welding suffers from low efficiency and large quality fluctuations. With technological advancements, traditional manual welding methods are gradually being replaced by automated equipment. However, existing automated welding equipment cannot weld workpieces of different sizes using a single device, and welding quality cannot be guaranteed. Therefore, the authors have designed a new welding device to ensure the quality of stainless steel buckets, pots, and other daily necessities during welding. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-head floating welding machine and a welding method which have good adaptability and can improve welding quality.

[0005] To solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

[0006] A double-head floating welding machine comprises a frame, a first linear guide rail and an adjustment mechanism are provided on the frame, and floating mechanisms are provided at both ends of the frame;

[0007] The two groups of floating mechanisms are arranged opposite to each other and are respectively connected to the first linear guide rail and the adjustment mechanism. The adjustment mechanism drives the two groups of floating mechanisms to move toward or away from each other on the first linear guide rail.

[0008] An outer electrode group and an inner electrode group are provided on the floating mechanism, and the outer electrode group and the inner electrode group are arranged opposite to each other.

[0009] In one embodiment, the floating mechanism includes a base, a driving member, and a floating group, wherein the base is disposed on a first linear guide rail, the driving member is disposed at one end of the base, and the inner electrode group is disposed at the other end of the base;

[0010] A second linear guide rail is provided in the middle of the base body, and a movable base is provided on the second linear guide rail, and the movable base is connected to a driving member. The outer electrode group is provided on the movable base, and the driving member drives the movable base to move on the second linear guide rail, so that the outer electrode group and the inner electrode group move toward or away from each other;

[0011] The floating group is arranged at the bottom of the seat body and is connected with the adjusting mechanism.

[0012] In one embodiment, the movable seat includes a first movable seat and a second movable seat, the first movable seat and the second movable seat are arranged side by side on the second linear guide rail, and a sliding rod is provided between them, one end of the sliding rod abuts against the second movable seat, and the first movable seat is sleeved on the sliding rod and can slide along the sliding rod, and a first elastic member is also sleeved on the sliding rod, and the two ends of the first elastic member abut against the first movable seat and the second movable seat respectively.

[0013] In one embodiment, the external electrode group includes a first external welding head and a second external welding head, the first external welding head is arranged on the first movable seat, the second external welding head is arranged on the second movable seat, and the first external welding head is located above the second external welding head.

[0014] In one embodiment, the inner electrode group includes an inner welding joint, and the inner welding joint is respectively arranged opposite to the first outer welding joint and the second outer welding joint, and cooperates with each other for welding.

[0015] In one embodiment, the floating group includes an adjustment plate, a floating rod and a fixed plate, wherein two fixed plates are provided and are respectively arranged at the bottom of the base body, and the floating rod is located between the two fixed plates. One end of the adjustment plate is sleeved on the floating rod, and the other end is connected to the adjustment mechanism. A second elastic member is also sleeved on the floating rod, and the two ends of the second elastic member are respectively abutted against the adjustment plate and one of the fixed plates.

[0016] In one embodiment, the adjustment mechanism includes a servo motor and a screw, one end of the screw is connected to the servo motor, and the adjustment plate is sleeved on the screw. The servo motor drives the screw to rotate, and when the screw rotates, the adjustment plate moves on the screw.

[0017] In addition, the present invention also provides a welding method of the double-head floating welding machine, comprising the following steps:

[0018] S1. Adjust the distance between the two sets of floating mechanisms through the adjustment mechanism so that the distance corresponds to the workpiece;

[0019] S2. Place both sides of the workpiece between the outer electrode group and the inner electrode group on the two floating mechanisms, and place the welding parts on the outer electrode group;

[0020] S3, the driving member drives the welding component on the outer electrode assembly to move toward the workpiece until the welding component abuts against the outer wall of the workpiece and the outer electrode assembly cannot move forward any further;

[0021] S4, the driving member continues to drive the outer electrode group. At this time, because the outer electrode group cannot move, its reaction force drives the floating mechanism to drive the inner electrode group to move toward the inner side wall of the workpiece until it abuts against the inner side wall of the workpiece;

[0022] S5. After the outer electrode group drives the welding component to abut against the outer wall of the workpiece and the inner electrode group to abut against the inner wall of the workpiece, the outer electrode group and the inner electrode group work to weld the workpiece and the welding component.

[0023] In one embodiment, in S2 , welding components may be placed on the outer electrode groups on one of the floating mechanisms, or on the outer electrode groups on both floating mechanisms.

[0024] The beneficial effects of the present invention are:

[0025] 1. Good adaptability. Floating mechanisms are set at both ends of the frame, and the two sets of floating mechanisms are driven by the adjustment mechanism to move toward or away from each other on the first linear guide rail, so that workpieces of different sizes can be welded, thereby improving the adaptability of the floating welding machine;

[0026] 2. Improve welding quality. The driving member drives the outer electrode group to move toward the inner electrode group. After the two workpieces to be welded abut each other, the outer electrode group cannot be moved any further, and the driving member continues to work. At this time, the reaction force drives the floating mechanism to drive the inner electrode group toward the outer electrode group until the outer electrode group and the inner electrode group respectively contact the two workpieces, thereby completing the welding. During the welding process, the outer electrode groups on the two floating mechanisms will not cause extrusion and deformation on the workpieces, thereby improving the welding quality of the workpieces.

[0027] 3. Diversified welding methods. Through two sets of floating mechanisms and the outer electrode group and inner electrode group arranged on the floating mechanism, it is possible to weld the side of the workpiece separately, weld both sides of the workpiece successively, or weld both sides of the workpiece simultaneously. Ultimately, the floating welding machine has a variety of welding methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the double-head floating welding machine of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the adjustment mechanism in the double-head floating welding machine of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the floating mechanism in the double-head floating welding machine of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the movable base in the double-head floating welding machine of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the floating group in the double-head floating welding machine of the present invention;

[0033] Figure 6 This is a schematic diagram of the working state of the double-head floating welding machine of the present invention.

[0034] As shown in the attached figure:

[0035] 100, rack;

[0036] 200, first linear guide rail;

[0037] 300, adjustment mechanism; 310, servo motor; 320, screw;

[0038] 400, floating mechanism; 410, seat; 420, driving member; 430, floating group; 431, adjustment plate; 432, floating rod; 433, fixed plate; 434, second elastic member; 440, second linear guide rail; 450, movable seat; 451, first movable seat; 452, second movable seat; 453, sliding rod; 454, first elastic member;

[0039] 500, external electrode group; 510, first external welding joint; 520, second external welding joint;

[0040] 600, inner electrode group; 610, inner welding joint;

[0041] 700, workpiece;

[0042] 800. Welding parts. DETAILED DESCRIPTION

[0043] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only."

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] See also Figure 1 and Figure 2 、 Figure 6 A double-head floating welding machine includes a frame 100, a first linear guide rail 200 and an adjustment mechanism 300 are provided on the frame 100, and floating mechanisms 400 are provided at both ends of the frame 100;

[0047] The two sets of floating mechanisms 400 are arranged opposite to each other and are respectively connected to the first linear guide rail 200 and the adjustment mechanism 300. The adjustment mechanism 300 drives the two sets of floating mechanisms 400 to move toward or away from each other on the first linear guide rail 200.

[0048] An outer electrode group 500 and an inner electrode group 600 are provided on the floating mechanism 400 , and the outer electrode group 500 and the inner electrode group 600 are arranged opposite to each other.

[0049] Specifically, in this embodiment, an outer electrode group 500 and an inner electrode group 600 are provided on the floating mechanisms 400 at both ends. During welding, the 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, and the two groups of floating mechanisms 400 can be driven by the adjustment mechanism 300 to move toward or away from each other along the first linear guide rail 200 to adjust the distance between the two groups of floating mechanisms 400, so that workpieces of different sizes can be placed between the two groups of floating mechanisms 400, and one device can be used to weld workpieces 700 of different sizes without replacing equipment, thereby reducing costs and improving the adaptability of this invention.

[0050] In addition, the invention adopts two sets of floating mechanisms 400, which can weld one side of the workpiece 700 separately, weld both sides of the workpiece 700 successively, or weld both sides of the workpiece 700 simultaneously, thereby realizing diversified welding of the floating welding machine with good welding quality.

[0051] See also Figure 3 In order to achieve floating welding of the workpiece 700, the floating mechanism 400 of the present invention includes a base body 410, a driving member 420 and a floating group 430. The base body 410 is arranged on the first linear guide rail 200, the driving member 420 is arranged at one end of the base body 410, and the inner electrode group 600 is arranged at the other end of the base body 410; a second linear guide rail 440 is provided in the middle of the base body 410, and a movable base 450 is provided on the second linear guide rail 440, and the movable base 450 is connected to the driving member 420, and the outer electrode group 500 is arranged on the movable base 450. The driving member 420 drives the movable base 450 to move on the second linear guide rail 440, so that the outer electrode group 500 and the inner electrode group 600 move toward or away from each other; the floating group 430 is provided at the bottom of the base body 410 and is connected to the adjustment mechanism 300.

[0052] When welding the workpiece 700, the spacing between the two sets of floating mechanisms 400 is first adjusted by the adjustment mechanism 300 to correspond to the size of the workpiece 700. Then, the two sides of the workpiece 700 are placed between the outer electrode group 500 and the inner electrode group 600 of the two sets of floating mechanisms 400, and the welding component 800 is placed on the outer electrode group 500. The driving member 420 is started and drives the outer electrode group 500 to move forward, while the outer electrode group 500 drives the welding component 800 to move toward the workpiece 700 until the welding component 800 contacts the outer wall of the workpiece 700. After the contact, the outer electrode group 500 can no longer move, but the driving member 420 continues to move the workpiece. At this time, the driving member 420 is driven by its reaction. The floating group 430 can drive the seat 410 to move in the opposite direction on the first linear guide rail 200 through the floating group 430, and the seat 410 will drive the inner electrode group 600 to move toward the outer electrode group 500 until the inner electrode group 600 abuts against the inner side wall of the workpiece 700. When the outer electrode group 500, the welding component 800, the workpiece 700 and the inner electrode group 600 are respectively abutted, the welding component 800 and the workpiece 700 can be welded. The present invention can realize the reverse movement of the floating mechanism 400 through the floating group 430 and the first linear guide rail 200, thereby avoiding excessive squeezing of the outer side wall of the workpiece 700 when the driving member 420 drives the outer electrode group 500 to move, thereby improving the quality of the workpiece 700 during welding.

[0053] See also Figure 4When welding the welding component 800 and the workpiece 700, since the upper and lower ends of the welding component 800 must maintain contact with the workpiece 700, the external electrode group 500 in the present invention includes a first external welding head 510 and a second external welding head 520, and the first external welding head 510 is located above the second external welding head 520. During welding, the welding component 800 is placed on the second external welding head 520, and the upper end of the welding component 800 is pressed by the first external welding head 510, and the lower end of the welding component 800 is pressed by the second external welding head 520, so that the upper and lower ends thereof maintain contact with the workpiece 700, thereby ensuring the welding quality.

[0054] At the same time, in order to facilitate the placement of the welding component 800 on the second external welding joint 520 and ensure that the welding component 800 does not over-extrude the workpiece 700, the movable seat 450 of the present invention includes a first movable seat 451 and a second movable seat 452. The first movable seat 451 and the second movable seat 452 are arranged side by side on the second linear guide rail 440, and a slide rod 453 is provided between them. One end of the slide rod 453 abuts against the second movable seat 452, and the first movable seat 451 is sleeved on the slide rod 453 and can slide along the slide rod 453. A first elastic member 454 is also sleeved on the slide rod 453, and the two ends of the first elastic member 454 abut against the first movable seat 451 and the second movable seat 452 respectively, and the first external welding head 510 is arranged on the first movable seat 451, and the second external welding head 520 is arranged on the second movable seat 452.

[0055] Because the second outer welding joint 520 is located below the first outer welding joint 510, when the welding component 800 is placed, the first outer welding joint 510 will maintain a certain distance from the second outer welding joint 520 under the action of the first elastic member 454 and the first movable seat 451. At this time, the welding component 800 can be conveniently placed on the second outer welding joint 520.

[0056] After the welding component 800 is placed, the driving member 420 drives the first movable seat 451 to move, and when the first movable seat 451 moves, it pushes the second movable seat 452 to move, so that the second outer welding head 520 drives the welding component 800 to contact the outer side wall of the workpiece 700, and the second outer welding head 520 presses the lower end of the welding component 800, and the driving member 420 continues to drive the first movable seat 451 to move. When the first movable seat 451 moves, it squeezes the first elastic member 454. Press until the first outer welding head 510 presses the upper end of the welding component 800, thereby pressing the upper and lower ends of the welding component 800 through the first outer welding head 510 and the second outer welding head 520, and through the sliding rod 453 and the first elastic member 454, the pressing force of the first outer welding head 510 and the second outer welding head 520 on the welding component 800 is maintained in a moderate state, and the outer electrode groups 500 on the two groups of floating mechanisms 400 will not cause excessive extrusion and deformation to the workpiece 700, thereby improving the welding quality of the workpiece 700.

[0057] Of course, in order to realize the welding function, the internal electrode group 600 of the present invention includes an internal welding head 610, and the internal welding head 610 is respectively arranged opposite to the first external welding head 510 and the second external welding head 520. The first external welding head 510 and the second external welding head 520 are in contact with the welding component 800, and the welding component 800 is in contact with the outer wall of the workpiece 700. The internal welding head 610 is in contact with the inner wall of the workpiece 700, thereby realizing the welding of the welding component 800 and the workpiece 700.

[0058] See also Figure 2 and Figure 5 In order to adjust the spacing between the floating mechanisms 400 and ensure that they can be floated for welding without causing excessive extrusion on the workpiece 700, the floating group 430 of the present invention includes an adjustment plate 431, a floating rod 432 and a fixed plate 433, wherein two fixed plates 433 are provided and are respectively arranged at the bottom of the base body 410, and the floating rod 432 is located between the two fixed plates 433. One end of the adjustment plate 431 is sleeved on the floating rod 432, and the other end is connected to the adjustment mechanism 300. A second elastic member 434 is also sleeved on the floating rod 432, and the two ends of the second elastic member 434 are respectively abutted against the adjustment plate 431 and one of the fixed plates 433.

[0059] The adjustment mechanism 300 includes a servo motor 310 and a screw 320 . One end of the screw 320 is connected to the servo motor 310 , and the adjustment plate 431 is sleeved on the screw 320 . The servo motor 310 drives the screw 320 to rotate, and when the screw 320 rotates, the adjustment plate 431 moves on the screw 320 .

[0060] When the distance between the two groups of floating mechanisms 400 needs to be adjusted, the servo motor 310 is started to drive the screw 320 to rotate. When the screw 320 rotates, it drives the adjustment plate 431 to move. The adjustment plate 431 drives the base 410 to move, causing the floating mechanism 400 to move as a whole. Finally, the two groups of floating mechanisms 400 move toward or away from each other, thereby adjusting the distance between the two groups of floating mechanisms 400.

[0061] During welding, when the outer electrode group 500 drives the welding component 800 to abut against the outer wall of the workpiece 700, the outer electrode group 500 can no longer move, and the driving member 420 continues to work, and its reaction force drives the base 410 to move in the opposite direction. When the base 410 moves, the fixed plate 433 drives the floating rod 432 to move on the adjustment plate 431 and squeezes the second elastic member 434, causing the second elastic member 434 to be compressed. When the base 410 moves, it drives the inner electrode group 500 to move. The electrode group 600 moves toward the outer electrode group 500 until the inner welding head 610 of the inner electrode group 600 abuts the inner wall of the workpiece 700, thereby achieving welding. Finally, through the adjustment mechanism 300 and the floating group 430, the spacing of the floating mechanism 400 can be adjusted, and the floating mechanism 400 can be moved in the opposite direction, thereby facilitating the welding of workpieces 700 of different sizes and avoiding damage to the workpiece 700 caused by excessive extrusion and deformation, thereby ensuring its welding quality.

[0062] To sum up, the double-head floating welding machine of the present invention can adjust the spacing between the two groups of floating mechanisms 400 through the adjustment mechanism 300, so as to facilitate welding of workpieces 700 of different sizes, and realize welding of workpieces 700 of different sizes by one device without the need to replace equipment, thereby reducing costs and improving the adaptability of the invention. At the same time, the floating mechanism 400 can also prevent the outer electrode groups 500 on the two groups of floating mechanisms 400 from causing excessive extrusion and deformation of the workpiece 700 during welding, thereby improving the welding quality of the workpiece 700.

[0063] In addition, the present invention also provides a welding method of the double-head floating welding machine, comprising the following steps:

[0064] S1. Adjust the distance between the two sets of floating mechanisms 400 through the adjustment mechanism 300 so that the distance corresponds to the workpiece 700;

[0065] S2. Place both sides of the workpiece 700 between the outer electrode group 500 and the inner electrode group 600 on the two floating mechanisms 400, and place the welding component 800 on the outer electrode group 500;

[0066] S3, the driving member 420 drives the welding component 800 on the outer electrode assembly 500 to move toward the workpiece 700 until the welding component 800 abuts against the outer wall of the workpiece 700 and the outer electrode assembly 500 cannot move forward any further;

[0067] S4: The driving member 420 continues to drive the outer electrode assembly 500. At this time, because the outer electrode assembly 500 cannot move, its reaction force drives the floating mechanism 400 to move the inner electrode assembly 600 toward the inner sidewall of the workpiece 700 until it contacts the inner sidewall of the workpiece 700.

[0068] S5. After the outer electrode group 500 drives the welding component 800 to abut against the outer wall of the workpiece 700 and the inner electrode group 600 to abut against the inner wall of the workpiece 700, the outer electrode group 500 and the inner electrode group 600 work to weld the workpiece 700 and the welding component 800.

[0069] Specifically, when welding the welding component 800 and the workpiece 700, the adjustment mechanism 300 is first used to adjust the distance between the two groups of floating mechanisms 400 so that the distance corresponds to the size of the workpiece 700. Then, the welding component 800 is placed on the outer electrode group 500, and then the driving member 420 is started. The driving member 420 drives the outer electrode group 500 to move with the welding component 800 toward the workpiece 700 until the welding component 800 abuts the outer wall of the workpiece 700. At this time, since the welding components 800 on both sides abut against the workpiece 700, they cannot be moved anymore, and the driving member 420 continues to work. Under its reaction force, the floating mechanism 400 is moved in the opposite direction, driving the inner electrode group 600 to move toward the inner wall of the workpiece 700 until it abuts against the inner wall of the workpiece 700. After abutment, the welding between the welding component 800 and the workpiece 700 can be achieved.

[0070] In the present invention, the welding component 800 can be installed on one side of the workpiece 700, or on both sides of the workpiece 700. Therefore, the welding component 800 can be placed on the outer electrode group 500 on one set of floating mechanisms 400, or on the outer electrode groups 500 on both sets of floating mechanisms 400.

[0071] When the welding component 800 only needs to be installed on one side of the workpiece 700, both sides of the workpiece 700 are first placed between the outer electrode assemblies 500 and the inner electrode assemblies 600 of the two floating mechanisms 400. The welding component 800 is then placed on one of the outer electrode assemblies 500. The driving member 420 of this floating mechanism 400 is activated, driving the outer electrode assembly 500 and the welding component 800 toward the workpiece 700 until the welding component 800 contacts the workpiece 700. The other side of the workpiece 700 is blocked by the outer electrode assembly 500 on the other floating mechanism 400 and cannot move. Therefore, this outer electrode assembly 500 can no longer drive the welding component 800 to move. At this time, due to the continued operation of the driving member 420, its reaction force causes this floating mechanism 400 to reverse direction and drive this inner electrode assembly 600 toward the inner wall of the workpiece 700 until it contacts the inner wall, completing the welding of the single welding component 800 to the workpiece 700.

[0072] When it is necessary to install welding components 800 on both sides of the workpiece 700, similarly, both sides of the workpiece 700 are placed between the outer electrode group 500 and the inner electrode group 600 of the two sets of floating mechanisms 400, and the welding components 800 are placed on both sets of outer electrode groups 500. The two sets of driving members 420 are started, and at the same time, the outer electrode groups 500 are driven to move with the welding components 800 toward the workpiece 700 until the two welding components 800 respectively abut against the two sides of the workpiece 700. At this time, the workpiece 700 is in a clamped state and cannot move, while the two sets of driving members 420 continue to work. Due to their reaction force, the two sets of floating mechanisms 400 move in the opposite direction, driving the two sets of inner electrode groups 600 to move toward the inner side walls of the workpiece 700 respectively until they abut against the inner side walls respectively, thereby completing the welding of the two welding components 800 and the workpiece 700 at the same time.

[0073] In addition, when welding components 800 are installed on both sides of the workpiece 700, the welding components 800 on one side can be welded first. After welding the welding components 800 on this side to the workpiece 700 through this set of floating mechanisms 400, the welding components 800 on the other side and the workpiece 700 can be welded through another set of floating mechanisms 400, thereby realizing the successive welding of the welding components 800 on both sides.

[0074] Finally, through the above welding method, the sides of the workpiece 700 can be welded separately, the two sides of the workpiece 700 can be welded successively, and the two sides of the workpiece 700 can be welded simultaneously, making the welding methods of the floating welding machine more diversified.

[0075] The above shows and describes the basic principles, main features, and advantages of the present invention. Any person skilled in the art can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications, and evolutions made by any person skilled in the art, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above, are equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A double-head floating welding machine, comprising a frame, characterized in that: The frame is provided with a first linear guide rail and an adjustment mechanism, and floating mechanisms are respectively provided at both ends of the frame; The two groups of floating mechanisms are arranged opposite to each other and are respectively connected to the first linear guide rail and the adjustment mechanism. The adjustment mechanism drives the two groups of floating mechanisms to move toward or away from each other 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 arranged opposite to each other; The floating mechanism includes a base, a driving member and a floating group, wherein the base is arranged on a first linear guide rail, the driving member is arranged at one end of the base, and the inner electrode group is arranged at the other end of the base; A second linear guide rail is provided in the middle of the base body, and a movable base is provided on the second linear guide rail, and the movable base is connected to a driving member. The outer electrode group is provided on the movable base, and the driving member drives the movable base to move on the second linear guide rail, so that the outer electrode group and the inner electrode group move toward or away from each other; The floating group is arranged at the bottom of the seat body and is connected to the adjustment mechanism; The movable seat includes a first movable seat and a second movable seat, the first movable seat and the second movable seat are arranged side by side on the second linear guide rail, and a sliding rod is provided between them, one end of the sliding rod abuts against the second movable seat, and the first movable seat is sleeved on the sliding rod and can slide along the sliding rod, and a first elastic member is further sleeved on the sliding rod, and two ends of the first elastic member abut against the first movable seat and the second movable seat respectively; The outer electrode group includes 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; The inner electrode group includes an inner welding joint, and the inner welding joint is respectively arranged opposite to the first outer welding joint and the second outer welding joint, and cooperates with each other for welding; The floating group includes an adjustment plate, a floating rod and a fixed plate, wherein two fixed plates are provided and are respectively arranged at the bottom of the base body, and the floating rod is located between the two fixed plates. One end of the adjustment plate is sleeved on the floating rod, and the other end is connected to the adjustment mechanism. A second elastic member is also sleeved on the floating rod, and the two ends of the second elastic member are respectively in contact with the adjustment plate and one of the fixed plates.

2. The double-head floating welding machine according to claim 1, characterized in that: The adjustment mechanism includes a servo motor and a screw, one end of the screw is connected to the servo motor, and the adjustment plate is sleeved on the screw. The servo motor drives the screw to rotate, and when the screw rotates, the adjustment plate moves on the screw.

3. The welding method of the double-head floating welding machine according to claim 1 or 2, characterized in that: The following steps are involved: S1. Adjust the distance between the two sets of floating mechanisms through the adjustment mechanism so that the distance corresponds to the workpiece; S2. Place both sides of the workpiece between the outer electrode group and the inner electrode group on the two floating mechanisms, and place the welding parts on the outer electrode group; S3, the driving member drives the welding component on the outer electrode assembly to move toward the workpiece until the welding component abuts against the outer wall of the workpiece and the outer electrode assembly cannot move forward any further; S4, the driving member continues to drive the outer electrode group. At this time, because the outer electrode group cannot move, its reaction force drives the floating mechanism to drive the inner electrode group to move toward the inner side wall of the workpiece until it abuts against the inner side wall of the workpiece; S5. After the outer electrode group drives the welding component to abut against the outer wall of the workpiece and the inner electrode group to abut against the inner wall of the workpiece, the outer electrode group and the inner electrode group work to weld the workpiece and the welding component.

4. The welding method of the double-head floating welding machine according to claim 3, characterized in that: In S2, welding components may be placed on the outer electrode groups on one of the floating mechanisms, or on the outer electrode groups on both floating mechanisms.

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