Welding apparatus

Abstract

The application discloses a welding equipment, wherein the welding equipment comprises a rack, a pressing mechanism, a welding mechanism and at least one pressure compensation device; the pressing mechanism is arranged on the rack, the pressing mechanism comprises a driving piece and a driving shaft, the driving piece is drivingly connected to one end of the driving shaft; the welding mechanism comprises at least two first electrodes and a second electrode; the pressure compensation device is arranged between the first electrode and the driving shaft, the pressure compensation device comprises an elastic piece and a connecting piece, one end of the connecting piece is movably connected to the driving shaft, the other end of the connecting piece is connected to the first electrode, the elastic piece is sleeved on the connecting piece, two ends of the elastic piece are respectively abutted against the first electrode and the driving shaft, and one pressure compensation device is correspondingly arranged between one first electrode and the driving shaft. The technical scheme of the application realizes pressure balance among the multi-layer electrodes, thereby ensuring that the welding pressure of the multi-layer electrodes in the welding process is consistent, and improving the welding effect.

Description

Technical Field

[0001] The present invention relates to the technical field of resistance welding, in particular to a welding device. Background Art

[0002] Resistance welding uses the resistance heat generated by an electric current passing through the weldment and the contact points as a heat source to locally heat the weldment, while simultaneously applying pressure to weld. This method requires no filler metal, resulting in high productivity, minimal weld deformation, and ease of automation.

[0003] In existing welding equipment, multi-layer electrodes are sometimes required during the welding process to achieve synchronous welding of multiple weld points between metals in the vertical direction. However, since the multi-layer electrodes only use one pressurizing mechanism for pressurization, uneven pressure distribution will occur between the multi-layer electrodes, which will lead to poor welding effect. Summary of the Invention

[0004] The main purpose of the present invention is to provide a welding device, aiming to achieve the effect of uniform pressure distribution during welding of multiple layers of electrodes in the welding device.

[0005] To achieve the above-mentioned object, the welding equipment proposed by the present invention includes:

[0006] frame;

[0007] A pressurizing mechanism, the pressurizing mechanism being arranged on the frame and comprising a driving member and a driving shaft, the driving member being drivingly connected to one end of the driving shaft;

[0008] a welding mechanism, the welding mechanism comprising at least two first electrodes and a second electrode, the at least two first electrodes being connected to the other end of the drive shaft, the second electrode being disposed on a side of the first electrode away from the drive shaft and spaced apart from the first electrode, the driving member driving the drive shaft and the first electrode toward or away from the second electrode; and

[0009] At least one pressure compensation device is provided between the first electrode and the drive shaft, the pressure compensation device includes an elastic member and a connecting member, one end of the connecting member is movably connected to the drive shaft, and the other end is connected to the first electrode, the elastic member is sleeved on the connecting member, and the two ends of the elastic member are respectively supported against the first electrode and the drive shaft, and one pressure compensation device is correspondingly provided between one of the first electrodes and the drive shaft.

[0010] Optionally, the elastic member is a coil spring, one end of the coil spring is connected to the driving shaft, and the other end is elastically connected to the first electrode.

[0011] Optionally, the welding mechanism further includes a mounting plate, one side surface of the mounting plate is connected to the drive shaft, and the other opposite side surface is connected to at least two of the first electrodes, and the at least two first electrodes are arranged in parallel along the vertical direction.

[0012] Optionally, the drive shaft is connected to the midpoint of the mounting plate.

[0013] Optionally, the midpoint of the mounting plate and the midpoint of the second electrode are located on the same horizontal line.

[0014] Optionally, a length of the second electrode in the vertical direction is greater than a distance from the uppermost first electrode to the lowermost first electrode.

[0015] Optionally, the number of the first electrodes is two, the two first electrodes are arranged at intervals in the vertical direction, and the pressure compensation device is provided between the first electrode located at the bottom and the driving shaft.

[0016] Optionally, the number of the first electrodes is three, the three first electrodes are arranged at intervals in the vertical direction, and the pressure compensation device is provided between the two first electrodes located above and below and the driving shaft.

[0017] Optionally, the frame includes a support base at the bottom and fixed plates connected to opposite sides of the support base, the pressure mechanism is provided on one of the fixed plates, the drive shaft passes through the fixed plate, and the second electrode is provided on the other fixed plate.

[0018] Optionally, center lines of the two fixing plates are located on the same horizontal line.

[0019] The welding mechanism of the welding equipment of the technical solution of the present invention is provided with at least two first electrodes and one second electrode, and a pressure compensation device is provided between one or more of the at least two first electrodes and the driving shaft of the pressurizing mechanism. The pressure compensation device includes an elastic member and a connecting member. When the first electrode contacts the welded tool, the elastic member is squeezed to form a reaction force of the elastic member, and then the compression elastic force of the elastic member is used to perform pressure compensation for adjusting the pressure between the first electrode and the second electrode. The connecting member is used to stabilize the position of the first electrode. By arranging a pressure compensation device between one or more of the first electrodes and the pressurizing mechanism, pressure balance is achieved between the multi-layer electrodes, thereby ensuring that the welding pressure of the multi-layer electrodes remains consistent during the welding process, thereby improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without any creative effort.

[0021] Figure 1 Structure schematic view of an embodiment of the welding equipment of the present application.

[0022] Figure 2 Structure schematic view of another embodiment of the welding equipment of the present application.

[0023] Explanation of reference numerals:

[0024] Label name Label name 1 welding equipment 10 frame 11 Support seat 13 Fixed plate 20 Pressurizing mechanism 21 Drive parts 23 drive shaft 30 Welding mechanism 31 First electrode 33 Second electrode 35 Mounting plate 40 Pressure compensation device 41 elastic parts 43 Connectors

[0025] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the protection scope of the present application.

[0027] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0028] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is also not within the protection scope of the present application.

[0029] The present application proposes a welding equipment 1.

[0030] In the embodiment of the present invention, Figure 1 、 Figure 2 As shown, the welding device 1 includes a frame 10, a pressurizing mechanism 20, a welding mechanism 30 and at least one pressure compensation device 40; the pressurizing mechanism 20 is provided on the frame 10, the pressurizing mechanism 20 includes a driving member 21 and a driving shaft 23, the driving member 21 drives one end connected to the driving shaft 23; the welding mechanism 30 includes at least two first electrodes 31 and a second electrode 33, at least two first electrodes 31 are connected to the other end of the driving shaft 23, the second electrode 33 is provided on a side of the first electrode 31 away from the driving shaft 23, and is spaced apart from the first electrode 31. The driving member 21 drives the driving shaft 23 and the first electrode 31 to move closer to or away from the second electrode 33; the pressure compensation device 40 is arranged between the first electrode 31 and the driving shaft 23, and the pressure compensation device 40 includes an elastic member 41 and a connecting member 43. One end of the connecting member 43 is movably connected to the driving shaft 23, and the other end is connected to the first electrode 31. The elastic member 41 is sleeved on the connecting member 43, and the two ends of the elastic member 41 are respectively held against the first electrode 31 and the driving shaft 23. A pressure compensation device 40 is correspondingly arranged between one of the first electrodes 31 and the driving shaft 23.

[0031] The pressurizing mechanism 20 is provided on the frame 10, and the welding mechanism 30 and the pressure compensating device 40 are also provided on the frame 10. The frame 10 can serve as a support and mounting frame for the pressurizing mechanism 20, the welding mechanism 30 and the pressure compensating device 40, and has the function of stabilizing the installation and protection of the pressurizing mechanism 20 and the welding mechanism 30, and has the function of stabilizing the position of the pressure compensating device 40. The pressurizing mechanism 20 includes a driving member 21 and a driving shaft 23. The driving member 21 can be a pneumatic cylinder, an oil cylinder, etc. The driving member 21 is provided on one side of the frame 10. One end of the driving shaft 23 is connected to the output end of the driving member 21, and the other end of the driving shaft 23 is connected to at least two first electrodes 31. The driving shaft 23 is connected to the first electrodes 31 and can have the effect of driving the first electrodes 31 to move. The driving member 21 drives the driving shaft 23 to extend or shorten, thereby driving the driving shaft 23 to move, thereby driving the first electrodes 31 to move. In this embodiment, the driving member 21 and the driving shaft 23 are both arranged in the horizontal direction, so the first electrode 31 is also connected to the driving shaft 23 in the horizontal direction. The driving member 21 can drive the driving shaft 23 to move, thereby driving the first electrode 31 to move back and forth in the horizontal direction. The second electrode 33 is arranged on the side of the first electrode 31 away from the driving shaft 23 and is spaced apart from the first electrode 31. Thus, the first electrode 31 can be driven by the driving member 21 to move closer to or away from the second electrode 33. When the first electrode 31 is close to the second electrode 33, the weld to be welded is placed between the first electrode 31 and the second electrode 33, and the first electrode 31 and the second electrode 33 are respectively in contact with the two opposite surfaces to be welded. By applying pressure by the pressurizing mechanism 20 and applying current to the first electrode 31 and the second electrode 33, the weld can be locally heated by using the resistance heat generated by the current passing through the weld and the contact point as a heat source, and pressure is applied to weld to achieve the butt connection of the weld.

[0032] Furthermore, the welding device 1 also includes at least one pressure compensating device 40, which is arranged between the first electrode 31 and the drive shaft 23. The pressure compensating device 40 includes an elastic member 41 and a connecting member 43. One end of the connecting member 43 is movably inserted into the drive shaft 23, and the other end is connected to the first electrode 31. The elastic member 41 is sleeved outside the connecting member 43, so that the first electrode 31 can move relative to the drive shaft 23. When the first electrode 31 moves toward the drive shaft 23, the elastic member 41 can be compressed, thereby generating elastic potential energy. When the first electrode 31 moves in a direction away from the drive shaft 23, the elastic member 41 recovers, and the elastic potential energy is converted into kinetic energy. In this embodiment, since different numbers of welding heads are provided on the first electrodes 31 of different layers, the number of welding heads is proportional to the welding pressure. Therefore, for the first electrode 31 with a large number of welding heads, a greater welding pressure is required, and a pressure compensating device 40 needs to be provided to compensate and increase the welding pressure. After the pressure compensation device 40 is set, the first electrode 31 of the pressure compensation device 40 layer is set. Due to the elastic deformation of the elastic member 41 itself, the distance between the first electrode 31 of this layer and the second electrode 33 is greater than the first electrode 31 without the pressure compensation device 40. Then, when multiple first electrodes 31 move toward the second electrode 33 at the same time, the first electrode 31 with the pressure compensation device 40 preferentially contacts the welding part and compresses the elastic member 41. When all the first electrodes 31 reach the welding part, the first electrode 31 with the pressure compensation device 40 compensates for the pressure due to the elastic potential energy of the elastic member 41, thereby increasing the welding pressure of this layer, thereby achieving the effect of matching the welding pressure with the number of welding heads in this layer, thereby achieving the purpose of achieving the same welding effect between multiple layers of electrodes, and ensuring the welding effect.

[0033] It can be understood that different welding pressures can be determined based on the elastic coefficient of the elastic part 41 or the initial compression of the elastic part 41, and then the changes in different welding pressures can be achieved by changing different elastic parts 41 or changing the preset initial compression of the elastic part 41 by the connecting part 43, thereby achieving the supplementation of different welding pressures.

[0034] At least two first electrodes 31 and one second electrode 33 are provided in the welding mechanism 30 of the welding equipment 1 of the technical solution of the present invention, and a pressure compensation device 40 is provided between one or more of the at least two first electrodes 31 and the drive shaft 23 of the pressurizing mechanism 20. The pressure compensation device 40 includes an elastic member 41 and a connecting member 43. When the first electrode 31 contacts the welded tool, the elastic member 41 is squeezed to form a reaction force of the elastic member 41, and then the compression elastic force of the elastic member 41 is used to perform pressure compensation for adjusting the pressure between the first electrode 31 and the second electrode 33. The connecting member 43 is used to stabilize the position of the first electrode 31. By arranging the pressure compensation device 40 between one or more of the first electrodes 31 and the pressurizing mechanism 20, pressure balance is achieved between the multi-layer electrodes, thereby ensuring that the welding pressure of the multi-layer electrodes remains consistent during the welding process, thereby improving the welding effect.

[0035] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, the elastic member 41 is a coil spring, one end of which is connected to the driving shaft 23 , and the other end of which is elastically connected to the first electrode 31 .

[0036] Coil springs are made of spring steel and can be manufactured with equal pitch and stiffness or with variable stiffness and pitch. The helical spring facilitates stretching and compression, resulting in sensitive pressure changes. The spring's deformation can be clearly observed, making it easier to control the spring's deformation coefficient. The helical spring, when stretched or compressed, does not stretch or compress the steel wire itself; it only changes its curvature. This increases the number of uses of the elastic object and improves the service life of the elastic member 41.

[0037] Furthermore, the elastic member 41 may also be an air spring, etc., which is not limited here.

[0038] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, the welding mechanism 30 further includes a mounting plate 35 , one side surface of the mounting plate 35 is connected to the driving shaft 23 , and the other side surface opposite thereto is connected to at least two first electrodes 31 , which are arranged in parallel along the vertical direction.

[0039] The mounting plate 35 is arranged such that one side of the mounting plate 35 is connected to the drive shaft 23, and the other side of the mounting plate 35 is connected to at least two first electrodes 31. The at least two first electrodes 31 are arranged in parallel along a vertical direction. In this embodiment, the mounting plate 35 is arranged in a vertical direction, so that the ends of the multiple first electrodes 31 can be located on the same vertical line, and one end of the multiple first electrodes 31 can be located on the same vertical line, thereby maintaining the consistency of the movement direction and movement distance of the multiple first electrodes 31, and the movement stroke remains consistent.

[0040] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, the drive shaft 23 is connected to the midpoint of the mounting plate 35 .

[0041] The drive shaft 23 is connected to the midpoint of the mounting plate 35, ensuring that the force point of the drive shaft 23 on the mounting plate 35 is located in the middle of the mounting plate 35, so that the force applied by the drive shaft 23 at different positions of the mounting plate 35 remains consistent, and the connection direction and connection effect of the drive shaft 23 and the mounting plate 35 are ensured, thereby ensuring that the moving direction and moving distance of multiple first electrodes 31 remain consistent, thereby improving the welding effect.

[0042] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, the midpoint of the mounting plate 35 and the midpoint of the second electrode 33 are located on the same horizontal line.

[0043] The midpoint of the mounting plate 35 and the midpoint of the second electrode 33 are located on the same horizontal line, ensuring that the midpoints of the plurality of first electrodes 31 and the midpoints of the second electrodes 33 are located on the same horizontal line, thereby ensuring the stability and accuracy of the docking of the plurality of first electrodes 31 and the second electrodes 33, ensuring the connection direction and connection effect of the first electrode 31 and the second electrode 33, ensuring the connection effect of the first electrode 31 and the second electrode 33, and improving the welding effect.

[0044] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, the length of the second electrode 33 in the vertical direction is greater than the distance from the uppermost first electrode 31 to the lowermost first electrode 31 .

[0045] The vertical length of the second electrode 33 is greater than the distance from the top first electrode 31 to the bottom first electrode 31, and the vertical length of the second electrode 33 is greater than the length of the connecting line of multiple first electrodes 31, thereby ensuring that multiple first electrodes 31 can be connected to the second electrode 33, thereby ensuring the stability and accuracy of the connection between multiple first electrodes 31 and the second electrode 33, ensuring the connection direction and connection effect of the first electrode 31 and the second electrode 33, ensuring the connection effect of the first electrode 31 and the second electrode 33, and improving the welding effect.

[0046] In one embodiment of the present invention, Figure 1 As shown, there are two first electrodes 31 , which are spaced apart in the vertical direction, and a pressure compensation device 40 is provided between the lower first electrode 31 and the driving shaft 23 .

[0047] There are two first electrodes 31, and a pressure compensation device 40 is provided between the lower first electrode 31 and the drive shaft 23. When the pressure compensation device 40 is provided on the lower first electrode 31, the elastic deformation of the elastic member 41 itself causes the lower first electrode 31 to have a greater travel distance from the second electrode 33 than the upper first electrode 31. Then, when the two first electrodes 31 move toward the second electrode 33 at the same time, the lower first electrode 31 preferentially contacts the welding part and compresses the elastic member 41. When the two first electrodes 31 reach the welding part, the lower first electrode 31 compensates for the pressure due to the elastic potential energy of the elastic member 41, thereby increasing the welding pressure of the layer, thereby achieving the effect of matching the welding pressure with the number of welding heads of the layer, thereby achieving the purpose of achieving the same welding effect of the two layers of electrodes, and ensuring the welding effect.

[0048] In one embodiment of the present invention, Figure 2 As shown, there are three first electrodes 31 , which are spaced apart in the vertical direction, and a pressure compensation device 40 is provided between the upper and lower first electrodes 31 and the driving shaft 23 .

[0049] There are three first electrodes 31, and a pressure compensation device 40 is provided between the top and bottom first electrodes 31 and the drive shaft 23. After the pressure compensation device 40 is provided at the top and bottom first electrodes 31, due to the elastic deformation of the elastic member 41 itself, the distance between the top and bottom first electrodes 31 and the second electrode 33 is greater than the first electrode 31 located in the middle. Then, when the three first electrodes 31 move toward the second electrode 33 at the same time, the top and bottom first electrodes 31 preferentially contact the welding part and compress the elastic member 41. When the three first electrodes 31 reach the welding part, the top and bottom first electrodes 31 compensate for the pressure due to the elastic potential energy of the elastic member 41, thereby increasing the welding pressure of the two layers, thereby achieving the effect of matching the welding pressure with the number of welding heads in this layer, thereby achieving the purpose of achieving the same welding effect of the three layers of electrodes, and ensuring the welding effect.

[0050] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, the frame 10 includes a support base 11 at the bottom and fixed plates 13 connected to opposite sides of the support base 11, the pressurizing mechanism 20 is arranged on one fixed plate 13, the driving shaft 23 passes through the fixed plate 13, and the second electrode 33 is arranged on the other fixed plate 13.

[0051] The setting of the support plate has the function of stabilizing the installation and protecting the pressure compensation device 40 and the welding mechanism 30; the setting of the fixed plate 13, one fixed plate 13 has the function of stabilizing the position of the pressurizing mechanism 20, and the other fixed plate 13 has the function of stabilizing the position of the second electrode 33. The setting of the two fixed plates 13 can stabilize the horizontal position of the driving member 21, the driving shaft 23 and the mounting plate 35, thereby maintaining the position of the first electrode 31 and the second electrode 33, thereby ensuring the stability and accuracy of the docking of multiple first electrodes 31 and the second electrode 33, ensuring the connection direction and connection effect of the first electrode 31 and the second electrode 33, ensuring the connection effect of the first electrode 31 and the second electrode 33, and improving the welding effect.

[0052] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, the center lines of the two fixing plates 13 are located on the same horizontal line.

[0053] The center lines of the two fixed plates 13 are located on the same horizontal line, maintaining the horizontal position of the driving member 21, the driving shaft 23 and the mounting plate 35, thereby maintaining the position of the first electrode 31 and the second electrode 33, thereby ensuring the stability and accuracy of the docking of multiple first electrodes 31 and the second electrodes 33, ensuring the connection direction and connection effect of the first electrode 31 and the second electrode 33, ensuring the connection effect of the first electrode 31 and the second electrode 33, and improving the welding effect.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A welding device, characterized in that: include: frame; A pressurizing mechanism, the pressurizing mechanism being arranged on the frame and comprising a driving member and a driving shaft, the driving member being drivingly connected to one end of the driving shaft; a welding mechanism, the welding mechanism comprising a second electrode and at least two first electrodes, the at least two first electrodes being connected to the other end of the drive shaft, the second electrode being disposed on a side of the first electrode away from the drive shaft and spaced apart from the first electrode, the driving member driving the drive shaft and the first electrode toward or away from the second electrode; and at least one pressure compensating device, the pressure compensating device being disposed between the first electrode and the drive shaft, the pressure compensating device comprising an elastic member and a connecting member, one end of the connecting member being movably connected to the drive shaft, and the other end being connected to the first electrode, the elastic member being sleeved on the connecting member, the two ends of the elastic member respectively abutting against the first electrode and the drive shaft, and one pressure compensating device being correspondingly disposed between one of the first electrodes and the drive shaft; Different numbers of welding heads are provided on the first electrodes at different vertical heights, the number of welding heads being proportional to the welding pressure, and the pressure compensation device is provided on the first electrode with a larger number of welding heads to compensate and increase the welding pressure; There are two first electrodes, the two first electrodes are spaced apart in the vertical direction, and the pressure compensation device is provided between the first electrode located at the bottom and the driving shaft; or there are three first electrodes, the three first electrodes are spaced apart in the vertical direction, and the pressure compensation device is provided between the two first electrodes located at the top and the bottom and the driving shaft; The frame includes a support base at the bottom and fixed plates connected to opposite sides of the support base, the pressurizing mechanism is provided on one of the fixed plates, the driving shaft passes through the fixed plate, and the second electrode is provided on the other fixed plate; The length of the second electrode in the vertical direction is greater than the distance between the uppermost first electrode and the lowermost first electrode.

2. The welding device according to claim 1, wherein: The elastic member is a coil spring, one end of which is connected to the driving shaft, and the other end of which is elastically connected to the first electrode.

3. The welding device according to claim 2, characterized in that The welding mechanism further includes a mounting plate, one side surface of the mounting plate is connected to the driving shaft, and the other opposite side surface is connected to at least two first electrodes, and the at least two first electrodes are arranged in parallel along the vertical direction.

4. The welding device according to claim 3, wherein: The driving shaft is connected to the midpoint of the mounting plate.

5. The welding device according to claim 4, wherein: The midpoint of the mounting plate and the midpoint of the second electrode are located on the same horizontal line.

6. The welding device according to claim 5, characterized in that The center lines of the two fixing plates are located on the same horizontal line.

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