A welding device

Abstract

This utility model discloses a welding device, belonging to the field of automated mechanical device technology. It includes a frame and a first linear drive assembly, a second linear drive assembly, and a welding head assembly arranged from top to bottom on the frame. It also includes a lateral adjustment assembly disposed between the second linear drive assembly and the welding head assembly, which drives the welding head assembly to move laterally relative to the second linear drive assembly. By providing the lateral adjustment assembly, this utility model can drive the welding head assembly to move laterally relative to the second linear drive assembly; this allows adjustment of the lateral position of the welding head assembly, especially the welding head, thereby achieving precise lateral alignment with the welding position on the welding seat. Furthermore, this utility model also uses a pressure sensor disposed between the drive end of the second linear drive assembly and the lateral adjustment assembly to sense the force exerted on the welding head assembly during welding, and to adjust the downward pressure on the welding head assembly in a timely manner, effectively protecting the welding head.

Description

Technical Field

[0001] This utility model belongs to the field of automated mechanical devices technology, specifically relating to a welding device. Background Technology

[0002] Welding is a core process in industries such as machinery manufacturing, automobile production, and shipbuilding. It can replace traditional processes such as casting and forging to achieve lightweight structural design and the manufacture of complex components. For example, spot welding or ultrasonic welding is a common key step in lithium battery manufacturing, involving connecting internal or external metal components of the battery (such as tabs and electrodes, cover plates and shells) together by welding. When performing welding processes on lithium batteries, the welding head needs to be driven to move towards the welding position and a certain pressure needs to be applied to the weld.

[0003] In traditional technology, welding equipment uses cylinders to directly drive the welding head assembly to lift and lower for welding. However, due to the influence of the welding head stroke, the single cylinder structure has low efficiency when driving the welding head. As the welding head stroke increases, the efficiency of the single cylinder structure when driving the welding head will be even lower. Moreover, the welding head wears out quickly in the traditional method, which greatly reduces the welding head life.

[0004] To address the problems in traditional technologies, existing techniques employ a servo motor linear drive assembly mounted on the frame of the welding device. This servo motor linear drive assembly drives a cylinder linear drive assembly to move up and down, which in turn drives the welding head assembly to move up and down. Specifically, the servo motor linear drive assembly, the cylinder linear drive assembly, and the welding head assembly are arranged sequentially from top to bottom, as described in patent document CN119501264A. While this existing technology can solve the problem of low efficiency in lithium battery welding equipment, it still suffers from low welding control precision. Utility Model Content

[0005] This utility model provides a welding device, which aims to further improve the welding control precision. This utility model is achieved through the following technical solution.

[0006] A welding apparatus includes: a frame, a first linear drive assembly mounted on the frame, a second linear drive assembly connected to the drive end of the first linear drive assembly, and a welding head assembly connected to the drive end of the second linear drive assembly; the first linear drive assembly, the second linear drive assembly, and the welding head assembly are arranged from top to bottom; characterized in that it further includes a lateral adjustment assembly disposed between the second linear drive assembly and the welding head assembly, the lateral adjustment assembly driving the welding head assembly to lateral displacement relative to the second linear drive assembly.

[0007] As a preferred technical solution, the lateral adjustment component includes a lateral fixing mechanism, a lateral displacement mechanism, and a lateral adjustment mechanism. The lateral fixing mechanism is longitudinally and synchronously displaced to the driving end of the second linear drive component. The lateral displacement mechanism is laterally and synchronously displaced to the welding head component. The lateral adjustment mechanism drives the lateral displacement mechanism to laterally displace relative to the lateral fixing mechanism.

[0008] As a preferred technical solution, the lateral adjustment component includes a micrometer adjustment component arranged laterally.

[0009] As a preferred technical solution, the welding device further includes a pressure sensor disposed between the drive end of the second linear drive assembly and the lateral adjustment assembly.

[0010] As a preferred technical solution, the welding device further includes a longitudinal displacement monitoring component for monitoring the longitudinal displacement of the drive end of the first linear drive component.

[0011] As a preferred technical solution, the longitudinal displacement monitoring component includes a grating ruler sensor, wherein the scale grating and the grating reading head of the grating ruler sensor are respectively disposed on the drive end of the first linear drive component and the frame.

[0012] As a preferred technical solution, the welding head assembly includes a support frame, a welding head mounting mechanism, a welding head mechanism, and a leveling spring; the support frame is connected to the lateral displacement mechanism in a synchronous lateral displacement manner; the welding head mechanism is laterally arranged on two spaced-apart welding head mounting mechanisms, and the two welding head mounting mechanisms are rotatably arranged below the support frame; each welding head mounting mechanism is elastically connected to the support frame on its front and rear sides relative to the axis of the welding head mechanism through a leveling spring.

[0013] As a preferred technical solution, the support frame includes a support plate and an arc-shaped groove seat; the two arc-shaped groove seats are spaced apart from each other and are each disposed below the support plate with their arc-shaped grooves facing downwards; the upper part of each of the two welding head mounting mechanisms has an arc-shaped boss portion that matches the arc-shaped groove and slides along the arc-shaped groove.

[0014] As a preferred technical solution, the welding device further includes a welding head leveling adjustment component that drives the two welding head mounting mechanisms to rotate back and forth relative to the support frame.

[0015] As a preferred technical solution, the welding head leveling adjustment assembly includes a knob, a worm gear, a worm gear seat, a turbine, a turbine seat, an assembly seat, a screw, a nut seat, and a connector. The assembly seat is fixedly mounted on the lateral displacement mechanism, the turbine seat is fixedly mounted on the assembly seat, the turbine is longitudinally mounted on the turbine seat, and the screw is connected below the turbine. The worm gear is laterally mounted on the worm gear seat, with a knob at one end and the other end meshing with the turbine. The nut seat cooperates with the screw and is driven up and down by the screw. The connector is connected to the nut seat on one side and to the front or rear side of the two welding head mounting mechanisms relative to the welding head mechanism axis on the other side.

[0016] The welding device provided by this utility model has the following advantages: By setting a lateral adjustment component between the second linear drive component and the welding head component, the welding head component can be driven to move laterally relative to the second linear drive component. This allows adjustment of the lateral position of the welding head component, especially the welding head, so that it can be precisely aligned laterally with the welding position of the welding seat (used in conjunction with the welding device to support the workpiece to be welded, generally fixed on the ground or machine base). Furthermore, by setting a pressure sensor between the drive end of the second linear drive component and the lateral adjustment component, the driving force transmitted from the second linear drive component to the welding head component or the reaction force borne by the welding head component during welding can be sensed in real time, allowing for timely adjustment of the downward pressure on the welding head component during welding, effectively protecting the welding head. Moreover, by setting a longitudinal displacement monitoring component, the longitudinal displacement of the drive end of the first linear drive component can be monitored, providing an effective reference for precise control of the welding depth. Finally, by setting a welding head leveling adjustment component, the two welding head mounting mechanisms are driven to rotate back and forth relative to the support frame, thereby precisely adjusting the level of the welding head relative to the welding seat, ensuring welding accuracy and reducing welding head wear. Attached Figure Description

[0017] Figure 1 A front view of the welding apparatus provided for a specific embodiment of this utility model.

[0018] Figure 2 A perspective view of the welding device from the lower right side, provided for a specific embodiment of this utility model.

[0019] Figure 3 A further view of the welding apparatus provided for a specific embodiment of this utility model.

[0020] Figure 4 An exploded rear view of the welding apparatus provided for a specific embodiment of this utility model.

[0021] Figure 5 A perspective view from the upper left side of the welding device provided for a specific embodiment of this utility model, showing the lateral adjustment component, pressure sensor, welding head level adjustment component, and other parts.

[0022] Figure 6 This is a perspective view of the lower right side of the welding device, including the lateral adjustment component, pressure sensor, and welding head leveling component, provided for a specific embodiment of this utility model.

[0023] Figure 7 A perspective view of the welding head leveling component and other parts in the welding device provided for a specific embodiment of this utility model from the left rear side. Detailed Implementation

[0024] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", "front", "back", etc., indicating the orientation or positional relationship, are all based on the orientation or relative positional relationship shown in the accompanying drawings. They are intended to facilitate a clear description of the structure of the product or device and are not intended to limit the actual orientation of the product or device during production, use, sales, etc.

[0026] Furthermore, the terms "first" and "second" are used only for distinguishing purposes in the description and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0027] Please see Figures 1 to 4 One basic embodiment of this utility model provides a welding device 100 for use in conjunction with a welding stand. The welding stand is used to support the workpiece to be welded (e.g., electrode sheet and electrode tab). The welding stand is generally fixed on the ground or machine platform, and the welding device 100 is disposed above the welding stand.

[0028] The welding apparatus 100 includes a frame 10, a first linear drive assembly 20, a second linear drive assembly 30, a welding head assembly 40, and a lateral adjustment assembly 50. The frame 10 is fixedly installed to provide assembly space. The first linear drive assembly 20 is mounted on the frame 10 and has a drive end that moves up and down. The second linear drive assembly 30 is connected to the drive end of the first linear drive assembly 20 and moves up and down under the drive of the first linear drive assembly 20. The welding head assembly 40 is indirectly connected to the drive end of the second linear drive assembly 30 through the lateral adjustment assembly 50 and moves up and down under the drive of the second linear drive assembly 30. The first linear drive assembly 20, the second linear drive assembly 30, and the welding head assembly 40 are arranged from top to bottom. The lateral adjustment assembly 50 is located between the second linear drive assembly 30 and the welding head assembly 40. Under the drive of the second linear drive assembly 30, the lateral adjustment assembly 50 drives the welding head assembly 40 to move up and down, and at the same time, the lateral adjustment assembly 50 drives the welding head assembly 40 to move laterally relative to the second linear drive assembly 30.

[0029] As a specific implementation method, combined with Figure 4 As shown, the first linear drive assembly 20 includes a servo motor 21, a lead screw 22, and a lead screw nut seat 23. The servo motor is mounted on the frame 10 with its drive shaft facing downwards. The lead screw 22 is coaxially connected to the drive shaft of the servo motor 21. The lead screw nut seat 23 is mounted on the frame 10 in a sliding manner and cooperates with the lead screw 22, moving up and down under the drive of the lead screw 22. In this configuration, the lead screw nut seat 23 serves as the drive end of the first linear drive assembly 20. Of course, the first linear drive assembly 20 can also adopt other structures, as long as it has a drive end capable of driving the second linear drive assembly 30 to move up and down; these will not be elaborated upon here.

[0030] In one specific implementation, the second linear drive assembly 30 can be a cylinder, the cylinder body of which is connected to the drive end of the first linear drive assembly 20, and its drive arm is set downwards; in this way, the drive arm of the cylinder is the drive end of the second linear drive assembly 30, which is used to connect directly or indirectly to the lateral adjustment assembly 50.

[0031] Combination Figure 5 and Figure 6 As shown, in one specific embodiment, the lateral adjustment component 50 includes a lateral fixing mechanism 51, a lateral displacement mechanism 52, and a lateral adjustment mechanism 53. The lateral fixing mechanism 51 is longitudinally and synchronously displaced with the driving end of the second linear drive component 30. The lateral displacement mechanism 52 is laterally and synchronously displaced with the welding head component 40. The lateral adjustment mechanism 53 drives the lateral displacement mechanism 52 to move laterally relative to the lateral fixing mechanism 51.

[0032] As can be seen from the above, by providing a lateral adjustment component 50 between the second linear drive component 30 and the welding head component 40, the welding head component 40 can be driven to move laterally relative to the second linear drive component 30. This allows adjustment of the lateral position of the welding head component 40, especially the welding head of the welding head component 40, thereby achieving precise lateral alignment with the welding position of the welding seat. Furthermore, to improve the accuracy of the lateral displacement adjustment, the lateral adjustment component 50 is preferably a laterally arranged micrometer adjustment component.

[0033] See also Figures 1 to 4 In a preferred embodiment, the welding apparatus 100 further includes a pressure sensor 60 disposed between the drive end of the second linear drive assembly 30 and the lateral adjustment assembly 50. This preferred embodiment, by placing a pressure sensor between the drive end of the second linear drive assembly 30 and the lateral adjustment assembly 50, can sense in real time the driving force transmitted from the second linear drive assembly 30 to the welding head assembly 40 or the reaction force borne by the welding head assembly 40 during welding, thereby adjusting the downward pressure on the welding head assembly 40 in a timely manner and effectively protecting the welding head of the welding head assembly 40.

[0034] Specifically, see Figure 4 As shown, a connecting block slot 61 is provided above the transverse fixing mechanism 51, and the pressure sensor 60 is disposed in the connecting block slot 61. In addition, a connecting block 62 is provided at the driving end of the second linear drive assembly 30. The connecting block 62 is engaged in the connecting block slot 61 and is connected and cooperates with the pressure sensor 60. Furthermore, in order to make the second linear drive assembly 30 drive the pressure sensor 60 to move up and down more stably, a guide seat 63 is also provided on the periphery of the connecting block slot 61.

[0035] See also Figures 1 to 4 In a preferred embodiment, the welding apparatus 100 further includes a longitudinal displacement monitoring component 70 for monitoring the longitudinal displacement of the drive end of the first linear drive component 20. Specifically, the longitudinal displacement monitoring component 70 includes a grating ruler sensor, wherein the scale grating and the grating reading head of the grating ruler sensor are respectively disposed on the drive end of the first linear drive component and the frame, and their positions can be interchanged. Thus, by setting the longitudinal displacement monitoring component 70, the longitudinal displacement of the drive end of the first linear drive component 20 can be monitored, providing an effective reference for precise control of the welding depth.

[0036] See Figure 4 , Figure 5 and Figure 6In a preferred embodiment, the welding head assembly 40 includes a support frame 41, a welding head mounting mechanism 42, a welding head mechanism 43, and a leveling spring 44; the support frame is connected to the lateral displacement mechanism 52 in a lateral synchronous displacement manner; the welding head mechanism 43 is laterally arranged on two spaced welding head mounting mechanisms 42, and the two welding head mounting mechanisms are rotatably arranged below the support frame 41; each welding head mounting mechanism 42 is elastically connected to the support frame 41 on its front and rear sides relative to the axis of the welding head mechanism 43 through a leveling spring 44.

[0037] Specifically, the support frame 41 includes a support plate 411 and an arc-shaped groove seat 412; two arc-shaped groove seats 412 are spaced apart from each other and each is arranged below the support plate 411 with its arc-shaped groove 4121 facing downward; the upper part of each of the two welding head mounting mechanisms 42 has an arc-shaped boss portion 421 that matches the arc-shaped groove 4121 and slides along the arc-shaped groove 4121 (see details). Figure 6 ).

[0038] See Figures 1 to 5 and Figure 7 In a preferred embodiment, the welding apparatus 100 further includes a welding head leveling adjustment assembly 80 that drives the two welding head mounting mechanisms 42 to rotate back and forth relative to the support frame 41.

[0039] Specifically, the welding head leveling adjustment assembly 80 includes a knob 81, a worm gear 82, a worm gear seat 83, a turbine 84, a turbine seat 85, an assembly seat 86, a screw 87, a nut seat 88, and a connector 89. The assembly seat 86 is fixedly mounted on the transverse displacement mechanism 52, the turbine seat 85 is fixedly mounted on the assembly seat 86, the turbine 84 is longitudinally mounted on the turbine seat 85, and the screw 87 is connected below the turbine 84. The worm gear 82 is transversely mounted on the worm gear seat 83, with a knob 81 at one end and the other end engaging with the turbine 84. The nut seat 88 cooperates with the screw 87 and is driven up and down by the screw 87. The connector 89 is connected to the nut seat 88 on one side and to the rear side (or front side) of the two welding head mounting mechanisms 42 relative to the axis of the welding head mechanism 43 on the other side.

[0040] In the aforementioned welding head leveling adjustment assembly 80, rotating the knob 81 drives the worm gear 82 to rotate, which in turn drives the turbine 84 to rotate, converting the transverse transmission into a longitudinal transmission. Then, the screw 87 drives the nut seat 88 to move up and down, and drives the connecting piece 89 to move up and down. Since the connecting piece 89 connects the front or rear sides of the two welding head mounting mechanisms 42 and the axis of the welding head mechanism 43, it can drive the welding head mechanism 43, thereby adjusting the level of the welding head.

[0041] As can be seen from the above, by setting the welding head level adjustment component 80, the two welding head mounting mechanisms 42 are driven to rotate back and forth relative to the support frame 41, thereby accurately adjusting the level of the welding head of the welding head assembly 40 relative to the welding seat, ensuring welding accuracy and reducing welding head wear.

[0042] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent component transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A welding apparatus, comprising: The equipment includes a frame, a first linear drive assembly mounted on the frame, a second linear drive assembly connected to the drive end of the first linear drive assembly, and a welding head assembly connected to the drive end of the second linear drive assembly; the first linear drive assembly, the second linear drive assembly, and the welding head assembly are arranged from top to bottom; characterized in that it further includes a lateral adjustment assembly disposed between the second linear drive assembly and the welding head assembly, the lateral adjustment assembly driving the welding head assembly to laterally displace relative to the second linear drive assembly.

2. The welding apparatus according to claim 1, characterized in that, The lateral adjustment assembly includes a lateral fixing mechanism, a lateral displacement mechanism, and a lateral adjustment mechanism. The lateral fixing mechanism is longitudinally and synchronously displaced to the driving end of the second linear drive assembly. The lateral displacement mechanism is laterally and synchronously displaced to the welding head assembly. The lateral adjustment mechanism drives the lateral displacement mechanism to move laterally relative to the lateral fixing mechanism.

3. The welding apparatus according to claim 1, characterized in that, The lateral adjustment assembly includes a micrometer adjustment assembly arranged laterally.

4. The welding apparatus according to claim 1, characterized in that, The welding device also includes a pressure sensor, which is disposed between the drive end of the second linear drive assembly and the lateral adjustment assembly.

5. The welding apparatus according to claim 1, characterized in that, The welding apparatus further includes a longitudinal displacement monitoring component for monitoring the longitudinal displacement of the drive end of the first linear drive component.

6. The welding apparatus according to claim 5, characterized in that, The longitudinal displacement monitoring component includes a grating ruler sensor, wherein the scale grating and the grating reading head of the grating ruler sensor are respectively disposed on the drive end of the first linear drive component and the frame.

7. The welding apparatus according to claim 2, characterized in that, The welding head assembly includes a support frame, a welding head mounting mechanism, a welding head mechanism, and a leveling spring; the support frame is connected to the lateral displacement mechanism in a synchronous lateral displacement manner; the welding head mechanism is laterally arranged on two spaced-apart welding head mounting mechanisms, and the two welding head mounting mechanisms are rotatably arranged below the support frame; each welding head mounting mechanism is elastically connected to the support frame on its front and rear sides relative to the axis of the welding head mechanism through a leveling spring.

8. The welding apparatus according to claim 7, characterized in that, The support frame includes a support plate and an arc-shaped groove seat; The two arc-shaped groove seats are spaced apart from each other and are each disposed below the support plate with its arc-shaped groove facing downward; the upper part of each of the two welding head mounting mechanisms has an arc-shaped boss that matches the arc-shaped groove and slides along the arc-shaped groove.

9. The welding apparatus according to claim 8, characterized in that, The welding device also includes a welding head leveling adjustment assembly that drives the two welding head mounting mechanisms to rotate back and forth relative to the support frame.

10. The welding apparatus according to claim 9, characterized in that, The welding head leveling adjustment assembly includes a knob, a worm gear, a worm gear seat, a turbine, a turbine seat, an assembly seat, a screw, a nut seat, and a connector. The assembly seat is fixedly mounted on the lateral displacement mechanism, the turbine seat is fixedly mounted on the assembly seat, the turbine is longitudinally mounted on the turbine seat, and the screw is connected below the turbine. The worm gear is laterally mounted on the worm gear seat, with a knob at one end and the other end meshing with the turbine. The nut seat cooperates with the screw and is driven up and down by the screw. The connector is connected to the nut seat on one side and to the front or rear side of the two welding head mounting mechanisms relative to the welding head mechanism axis on the other side.

Images