Positioning mechanism for bus processing and automatic welding machine

Abstract

The invention discloses a positioning mechanism for bus processing and an automatic welding machine, and belongs to the technical field of welding, the positioning mechanism for bus processing comprises a platform, the upper end of the platform is fixedly provided with a horizontally arranged placing plate, the placing plate is provided with a first station and a second station, and the first station and the second station are staggered in the vertical direction and correspond to each other in the horizontal direction; the second station is configured to be capable of ascending and descending in the vertical direction so as to drive the workpiece on the second station to make contact with or be separated from the workpiece on the first station. A stand column and two sets of limiting plates are fixedly installed on the platform, and a first limiting strip and a second limiting strip are movably arranged on the stand column. According to the positioning mechanism for bus machining and the automatic welding machine, by adopting an up-down staggered butt joint mode, the splicing precision and adjustment convenience of workpieces are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of welding technology, and particularly relates to a positioning mechanism and an automatic welding machine for busbar processing. Background Technology

[0002] As a crucial component of power transmission systems, busbars are typically constructed from multiple metal elements, with right-angled trapezoidal components being widely used in the manufacturing process. In actual production, to form a complete conductive path, the inclined surfaces of two right-angled trapezoidal components must be precisely aligned and welded together along the joint. This fuses two independent components into a stable whole, and this splicing and welding process directly determines the final mechanical strength and conductivity of the busbar.

[0003] Currently, the industry generally adopts the traditional method of side limiting combined with corner positioning for the splicing and positioning of such components. The specific operation process is to place the two components to be spliced ​​flat on the same horizontal working surface, and use the vertical baffles on both sides to hold the straight edges of the two components to keep them in a vertical position. Then, the horizontal position of the two components is continuously finely adjusted by manual or mechanical devices so that the inclined surfaces of the two components are completely superimposed and aligned in the same plane, thereby completing the subsequent welding preparation.

[0004] However, this positioning method of directly aligning the inclined plane in the same plane has certain drawbacks. Due to the small contact area of ​​the inclined plane and the lack of an effective pre-guided structure, the components are prone to lateral sliding or angular displacement during repeated alignment adjustments, resulting in misalignment at the joint. Operators often need to spend a lot of time on fine correction, which not only significantly reduces production efficiency but also makes it difficult to ensure the consistency of accuracy for each splicing, and the welding quality is easily affected by inaccurate alignment. Summary of the Invention

[0005] To address the aforementioned shortcomings, the present invention aims to provide a positioning mechanism and an automatic welding machine for busbar processing, which can improve positioning accuracy and efficiency through misalignment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A positioning mechanism for busbar processing and an automatic welding machine include a platform. A horizontally arranged placement plate is fixedly installed on the upper end of the platform. The placement plate is provided with a first station and a second station. The first station and the second station are offset in the vertical direction and correspond to each other in the horizontal direction. The second station is configured to be able to move up and down in the vertical direction to drive the workpiece located at the second station to contact or separate from the workpiece at the first station. The platform is fixedly equipped with columns and two sets of limiting plates. The columns are movably equipped with a first limiting strip and a second limiting strip. When the first and second limiting strips are in the first position, they can cooperate with the limiting plates to limit the workpieces placed at the first and second workstations respectively, so that the workpieces at the first and second workstations are in corresponding positions in the horizontal direction. When the first and second limiting strips are in the second position, the workpiece at the second workstation can move downward and contact the workpiece at the first workstation.

[0007] Preferably, the first station is located on the upper surface of the placement plate, and the second station includes a mounting groove. A lifting plate is provided in the mounting groove. The lifting plate is driven by a driving mechanism and can move in the vertical direction. When the lifting plate is above the placement plate, the second station is higher than the first station. When the lifting plate is in the mounting groove, the upper surface of the lifting plate is flush with the upper surface of the placement plate, so that the first station and the second station are flush.

[0008] Preferably, a positioning protrusion is fixedly connected in the mounting groove. The distance from the upper surface of the positioning protrusion to the upper surface of the placement plate is equal to the thickness of the lifting plate. When the lifting plate descends to contact the positioning protrusion, the upper surface of the lifting plate can be flush with the upper surface of the placement plate.

[0009] Preferably, a vertical hole is provided in the mounting groove, and a sliding rod is slidably disposed in the vertical hole. The upper end of the sliding rod is fixedly connected to the lower surface of the lifting plate, and a return spring is sleeved on the sliding rod. The two ends of the return spring abut against the bottom wall of the mounting groove and the lower surface of the lifting plate, respectively.

[0010] Preferably, a first rotating sleeve and a second rotating sleeve are coaxially rotatably connected on the column, the position of the second rotating sleeve is higher than the position of the first rotating sleeve, the first limiting strip is fixedly connected to the side wall of the first rotating sleeve, and the second limiting strip is fixedly connected to the side wall of the second rotating sleeve. The column is provided with a driving component that acts on the first rotating sleeve and the second rotating sleeve simultaneously. When the driving component is in the initial position, the first limiting strip and the second limiting strip are in the first position. When the driving component moves up or down a certain distance along the column, it will drive the first rotating sleeve and the second rotating sleeve to rotate in opposite directions and drive the first limiting strip and the second limiting strip to move to the second position.

[0011] Preferably, the inner wall of the driving component has an arc surface, and both the first rotating sleeve and the second rotating sleeve are connected to the arc surface through a sliding groove mechanism, so that when the driving component moves up and down, the first rotating sleeve and the second rotating sleeve can rotate synchronously in opposite directions.

[0012] Preferably, a cylinder is fixedly installed on the upper end of the platform, and a connector is fixedly connected to the input end of the cylinder. The connector is fixedly connected to the side wall of the driving component, so that the cylinder can drive the driving component to move up and down.

[0013] Preferably, a first sliding groove and a second sliding groove are provided on the arc surface, and a first sliding column and a second sliding column are fixedly connected to the side walls of the first rotating sleeve and the second rotating sleeve. The first sliding column is slidably disposed in the first sliding groove, and the second sliding column is slidably disposed in the second sliding groove.

[0014] Preferably, the driving component is a semi-circular tube, the upper end of which is fixedly connected to a top plate, and the lower end of which is fixedly connected to a positioning rod with a non-circular cross-section. The upper end of the column is provided with a positioning groove, the lower end of which is inserted into the positioning groove, and a positioning spring is provided between the positioning rod and the bottom of the positioning groove.

[0015] This application also discloses an automatic welding machine for busbar processing, including the aforementioned positioning mechanism and welding robotic arm.

[0016] In summary, the technical effects and advantages of this invention are as follows: This busbar processing positioning mechanism and automatic welding machine significantly improve the splicing accuracy and adjustment convenience of the workpieces by adopting a staggered docking method. In traditional planar positioning, the two workpieces are prone to mutual friction and interference during adjustment, leading to positioning difficulties. However, this solution utilizes the spatial difference in the vertical direction, allowing the horizontal position adjustments of the two workpieces to be completely independent and unaffected. Operators can first adjust their respective workpieces to the ideal state, and then achieve precise closure by vertical downward movement. This step-by-step independent adjustment logic effectively eliminates the risk of misalignment and greatly improves positioning efficiency and final accuracy.

[0017] Furthermore, this application incorporates a pre-positioning mechanism consisting of a limiting plate and a limiting strip, which, in conjunction with the vertical downward movement of the second station, enables a rapid transition from coarse positioning to fine bonding. Compared to existing angular positioning methods that rely on point or line contact, the limiting surface in this solution forms a large-area surface contact support with the straight edge of the workpiece. This large contact area constraint method greatly enhances the rigidity and stability of the positioning system, effectively suppressing minor shaking or displacement of the workpiece before welding. This not only shortens auxiliary time but also structurally ensures the consistency of the bonding of the inclined surfaces to be welded, thereby significantly improving the overall processing quality of the busbar. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the position of virtual surface a in this invention; Figure 3 This is a schematic diagram of the working state in this invention.Figure 1 ; Figure 4 for Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 This is a schematic diagram of the slide mechanism in this invention; Figure 6 This is a schematic diagram of the working state in this invention. Figure 2 ; Figure 7 This is a schematic diagram of the working state in this invention. Figure 3 ; Figure 8 This is a schematic diagram showing the positional relationship between the connector and the functional part in this invention.

[0019] In the diagram: 1. Platform; 2. Placement plate; 3. Limiting plate; 4. Column; 5. Second rotating sleeve; 6. Driving component; 7. First rotating sleeve; 21. First station; 22. Second station; 221. Lifting plate; 222. Slide rod; 223. Return spring; 23. Mounting groove; 24. Positioning protrusion; 41. Positioning pin; 51. Second limiting strip; 512. Second sliding column; 61. Semicircular tube; 611. Second sliding groove; 612. First sliding groove; 62. Top plate; 63. Connecting piece; 631. Actuating part; 64. Cylinder; 65. Drive plate; 66. Positioning rod; 71. First limiting strip; 712. First sliding column. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] The inventors of this invention discovered that in the traditional busbar right-angle trapezoidal component splicing process, the two components are usually placed flat on the same plane and limited by the side baffle. Then, they are repeatedly fine-tuned to align the inclined surfaces. This same-plane adjustment method lacks effective guidance when the inclined surfaces are in contact, and is very prone to misalignment during friction and sliding, resulting in a cumbersome alignment process, low efficiency, and difficulty in ensuring welding accuracy.

[0022] Based on this discovery, the present invention proposes a novel approach: one of the components is raised vertically to create a spatial misalignment, and after the horizontal position is initially aligned, it is controlled to move vertically downwards to its final position. The forced guiding action from top to bottom is used to eliminate horizontal friction interference, thereby achieving automatic and precise fitting and efficient splicing of the inclined surface.

[0023] like Figures 1-8As shown, in one embodiment of the present invention, the positioning mechanism for busbar processing includes a platform 1, which is positioned directly below a welding robot arm to facilitate welding operations on the workpiece on the platform 1. A horizontally positioned placement plate 2 is fixedly installed on the upper end of the platform 1, with a certain distance between the placement plate 2 and the platform 1. In this embodiment, this distance can be set to 15mm-20mm to facilitate raising the placement height of the workpiece. A first station 21 and a second station 22 are provided on the placement plate 2, which are used to place the two parts of the busbar to be welded.

[0024] It is important to note that the first workstation 21 and the second workstation 22 are vertically offset. This offset refers to a state that includes, but is not limited to, offset between the first workstation 21 and the second workstation 22. Specifically, the second workstation 22 is configured to move vertically upwards and downwards. When the second workstation 22 moves above the first workstation 21, the two are offset. However, when the second workstation 22 moves to the plane where the first workstation 21 is located, the two are aligned.

[0025] At the same time, the first station 21 and the second station 22 correspond to each other in the horizontal direction, meaning that the edges of the first station 21 and the second station 22 are close to each other, such as... Figure 2 As shown, there is a vertical virtual surface a between the first station 21 and the second station 22, and the edges of the workpieces on both stations 21 and 22 are attached to this virtual surface a. The second station 22 can be raised and lowered to drive the workpieces located on the second station 22 to contact or separate from the workpieces on the first station 21.

[0026] In other words, this application aligns the workpieces by offsetting them vertically. This positioning method improves the docking accuracy of the workpieces and makes it easier to adjust their positions during the docking process. Compared to existing positioning methods, this solution allows the positions of the two workpieces to be adjusted independently without affecting each other, thus improving positioning accuracy and efficiency.

[0027] Furthermore, to improve the positioning accuracy of the workpiece, a column 4 and two sets of limiting plates 3 are fixedly installed on platform 1. The two limiting plates 3 are vertically arranged on the sides of the first station 21 and the second station 22, and the side walls of the limiting plates 3 are attached to the side walls of the placement plate 2, which can limit the workpiece. It should be noted that the limiting plates 3 and the placement plate 2 are fixedly welded together. This is to fix their relative positions for positioning, and also to achieve the fixed installation of platform 1 and placement plate 2 through the fixed welding.

[0028] The column 4 is movably provided with a first limiting bar 71 and a second limiting bar 51. The column 4 is provided with a driving mechanism that can act on the first limiting bar 71 and the second limiting bar 51 to make them move.

[0029] When the first limiting bar 71 and the second limiting bar 51 are in the first position, they can cooperate with the limiting plate 3 to limit the workpieces placed on the first station 21 and the second station 22 respectively, so that the workpieces located on the first station 21 and the second station 22 are in corresponding positions in the horizontal direction; for example Figure 1 and Figure 2 As shown, the first limiting bar 71 and the second limiting bar 51 have vertical limiting surfaces that can coincide with the aforementioned virtual surface a. Thus, under the action of the limiting plate 3 and the limiting surfaces, the two sides of the workpiece can be limited, fixing the position of the workpiece. Initially, the two workpieces are placed on the first station 21 and the second station 22 respectively, in a vertically offset state, and are positioned by the limiting bars and the limiting plate 3.

[0030] When the first limiting bar 71 and the second limiting bar 51 are in the second position, such as Figure 3 As shown, the first limiting bar 71 will move away from directly below the second station 22 to prevent interference. This allows the workpiece on the second station 22 to move downwards and contact the workpiece on the first station 21. Specifically... Figure 6 As shown, in the docking state, the two workpieces are brought together on the sidewalls of virtual surface a, providing a basis for subsequent welding.

[0031] In other words, this application pre-positions the workpiece using the limiting plate 3 and the limiting strip, and then brings the surfaces of the two workpieces to be welded together by moving the second station 22 downward. This method not only quickly positions the workpiece, improving efficiency, but also, compared to the angular positioning method in the prior art, has a larger contact area between the limiting surface and the workpiece, resulting in higher positioning accuracy.

[0032] In the embodiments of this application, the lifting method of the second workstation 22 specifically includes the following scheme: the first workstation 21 is located on the upper surface of the placement plate 2, and the second workstation 22 includes a mounting groove 23. A lifting plate 221 is provided in the mounting groove 23. The lifting plate 221 is driven by a driving mechanism and can move in the vertical direction. When the lifting plate 221 is above the placement plate 2, the second workstation 22 is higher than the first workstation 21. When the lifting plate 221 is in the mounting groove 23, the upper surface of the lifting plate 221 is flush with the upper surface of the placement plate 2, so that the first workstation 21 and the second workstation 22 are flush. At the same time, the contour of the lifting plate 221 is adapted to the contour of the mounting groove 23, so that the lifting plate 221 can form a complete planar structure with the placement plate 2.

[0033] Specifically, a drive plate 65 is fixedly connected to the side wall of the lifting plate 221. The drive mechanism can be a cylinder or an electric cylinder, etc. The cylinder or electric cylinder acts on the drive plate 65 to drive the lifting plate 221 to move up and down.

[0034] Furthermore, the drive plate 65 is connected to the lifting plate 221 by a fixed strip that is fixedly welded. The limiting plate 3 located at the second station 22 has a through groove in the vertical direction, and the fixed strip is located in the through groove to facilitate the stable sliding of the lifting plate 221 in the vertical direction.

[0035] To ensure that the lifting plate 221 is flush with the upper surface of the placement plate 2, and that the two workpieces to be welded are at the same height, a positioning protrusion 24 is fixedly connected in the mounting groove 23. The distance from the upper surface of the positioning protrusion 24 to the upper surface of the placement plate 2 is equal to the thickness of the lifting plate 221. When the lifting plate 221 descends to contact the positioning protrusion 24, the upper surface of the lifting plate 221 is flush with the upper surface of the placement plate 2.

[0036] Meanwhile, to further ensure the stable vertical sliding of the lifting plate 221 and to provide it with a reset function, a vertical hole is provided in the mounting groove 23. A sliding rod 222 is slidably mounted within the vertical hole. A linear bearing can also be installed between the sliding hole and the sliding rod 222 to reduce resistance. The upper end of the sliding rod 222 is fixedly connected to the lower surface of the lifting plate 221. A reset spring 223 is fitted over the sliding rod 222, with its two ends abutting against the bottom wall of the mounting groove 23 and the lower surface of the lifting plate 221, respectively. When the lifting plate 221 descends to its lowest position, the reset spring 223 is compressed. When the downward pressure on the lifting plate 221 is removed, the reset spring 223 releases its elastic potential energy, causing the lifting plate 221 to move upward, thus achieving the reset function.

[0037] It should be noted that the depth of the mounting groove 23 is designed to accommodate the compressed return spring 223, preventing the return spring 223 from lifting the lifting plate 221, thereby ensuring that the upper surface of the lifting plate 221 is flush with the upper surface of the placement plate 2.

[0038] In addition, the reset function of the return spring 223 serves two purposes: firstly, it moves the second station 22 to its initial position to prepare for the next welding operation; secondly, it allows the welded busbar to detach from the upper surface of the placement plate 2 by moving the lifting plate 221 upwards via the return spring 223 after the two workpieces are welded together, facilitating unloading. Figure 7 As shown.

[0039] In one embodiment, a first limiting strip 71 and a second limiting strip 51 are movably disposed on the column 4, meaning that the first limiting strip 71 and the second limiting strip 51 are rotatably connected to the column 4. Specifically, a first rotating sleeve 7 and a second rotating sleeve 5 are coaxially rotatably connected to the column 4, with the second rotating sleeve 5 positioned higher than the first rotating sleeve 7. The first limiting strip 71 is fixedly connected to the side wall of the first rotating sleeve 7, and the second limiting strip 51 is fixedly connected to the side wall of the second rotating sleeve 5. The length direction of the first limiting strip 71 and the second limiting strip 51 is along the radial direction of the column 4, and the width direction of the first limiting strip 71 and the second limiting strip 51 is along the axial direction of the column 4, that is, the vertical direction.

[0040] The column 4 is equipped with a driving member 6 that acts simultaneously on the first rotating sleeve 7 and the second rotating sleeve 5. When the driving member 6 is in the initial position, the first limiting strip 71 and the second limiting strip 51 are in the first position. When the driving member 6 moves up or down a certain distance along the column 4, it drives the first rotating sleeve 7 and the second rotating sleeve 5 to rotate in opposite directions, and moves the first limiting strip 71 and the second limiting strip 51 to the second position. That is to say, in this embodiment, through the linkage structure between the driving member 6 and the first rotating sleeve 7 and the second rotating sleeve 5, when the driving member 6 moves up and down, it can drive the first rotating sleeve 7 and the second rotating sleeve 5 to rotate, thereby changing the position of the first limiting strip 71 and the second limiting strip 51.

[0041] In addition, to ensure precise positioning of the first limiting strip 71 and the second limiting strip 51, a positioning pin 41 is fixedly installed on the side wall of the column 4, such as... Figure 1 , Figure 6 As shown, the positioning pins 41 are located on both sides of the virtual surface a. When the first limiting strip 71 and the second limiting strip 51 come into contact with the positioning pins 41, the limiting surfaces of the first limiting strip 71 and the second limiting strip 51 can coincide with the virtual surface a.

[0042] The transmission method of the driving component 6 and the first rotating sleeve 7 and the second rotating sleeve 5 specifically refers to the following: the inner wall of the driving component 6 has an arc surface, and both the first rotating sleeve 7 and the second rotating sleeve 5 are connected to the arc surface through a sliding groove mechanism, so that when the driving component 6 moves up and down, the first rotating sleeve 7 and the second rotating sleeve 5 can rotate synchronously in opposite directions. That is to say, in this embodiment, the driving component 6 achieves transmission through a sliding groove mechanism, so that changing the vertical position of the driving component 6 drives a change in the rotation angle of the first rotating sleeve 7 and the second rotating sleeve 5.

[0043] It should be noted that, in one embodiment, the driving method of the driving component 6 is as follows: a cylinder 64 is fixedly installed on the upper end of the platform 1, and a connector 63 is fixedly connected to the input end of the cylinder 64. The connector 63 is fixedly connected to the side wall of the driving component 6, so that the cylinder 64 can drive the driving component 6 to move up and down.

[0044] Furthermore, in this embodiment, it is defined that when the driving member 6 moves downward, the first rotating sleeve 7 and the second rotating sleeve 5 rotate outward in opposite directions respectively, and when the driving member 6 resets upward, the first rotating sleeve 7 and the second rotating sleeve 5 reset to their initial positions.

[0045] Meanwhile, the chute mechanism, such as Figure 5 As shown, a first sliding groove 612 and a second sliding groove 611 are formed on the arc surface. A first sliding column 712 and a second sliding column 512 are fixedly connected to the side walls of the first rotating sleeve 7 and the second rotating sleeve 5. The first sliding column 712 is slidably disposed in the first sliding groove 612, and the second sliding column 512 is slidably disposed in the second sliding groove 611. Both the first sliding groove 612 and the second sliding groove 611 consist of a first vertical section, a second vertical section, and an inclined section connecting the first and second vertical sections. The inclined sections in the first sliding groove 612 and the second sliding groove 611 have opposite inclination directions, so that when the first sliding groove 612 and the second sliding groove 611 act on the first sliding column 712 and the second sliding column 512, they can drive the first rotating sleeve 7 and the second rotating sleeve 5 to rotate in opposite directions. Simultaneously, to accommodate the height difference between the first rotating sleeve 7 and the second rotating sleeve 5, the position of the first sliding groove 612 is lower than the position of the second sliding groove 611.

[0046] In one embodiment, the driving component 6 is a semi-circular tube 61, and the first sliding groove 612 and the second sliding groove 611 are disposed on the inner wall of the semi-circular tube 61. The semi-circular tube 61 has vertical sidewalls on both sides. When the first limiting strip 71 and the second limiting strip 51 move from the positioning position to an area outside the placement plate 2, after the first rotating sleeve 7 and the second rotating sleeve 5 rotate into place, the sidewalls of the first limiting strip 71 and the second limiting strip 51 act on the vertical sidewalls of the semi-circular tube 61, further limiting the first limiting strip 71 and the second limiting strip 51.

[0047] In other words, internal limiting is achieved through the interaction of the sliding groove and the sliding column, and external limiting is achieved through the limiting strip and the side wall of the semi-circular tube 61, thereby ensuring that the positions of the first limiting strip 71 and the second limiting strip 51 are in a stable state.

[0048] A top plate 62 is fixedly connected to the upper end of the semicircular tube 61, and a positioning rod 66 with a non-circular cross-section is fixedly connected to the lower end of the top plate 62. In this embodiment, the positioning rod 66 has a regular hexagonal cross-section. A positioning groove is provided at the upper end of the column 4, and the lower end of the positioning rod 66 is inserted into the positioning groove. The shape of the positioning groove matches the shape of the positioning rod 66. Thus, the semicircular tube 61 can be positioned by utilizing the restriction of the positioning rod 66 and the positioning groove, so that the semicircular tube 61 can only move in the vertical direction and cannot rotate. In order to achieve the reset of the semicircular tube 61, a positioning spring is also provided between the positioning rod 66 and the bottom of the positioning groove. When the semicircular tube 61 moves downward, the top plate 62 will act on the positioning spring through the positioning rod 66, compressing it and storing elastic potential energy. When the external force is removed, the positioning spring will release the elastic potential energy, so that the semicircular tube 61 returns to its initial position.

[0049] In this embodiment, a connector 63 is fixedly welded to the outside of the semicircular tube 61, and a cylinder 64 is fixedly installed on the platform 1. The output end of the cylinder 64 is connected to the connector 63, so that the semicircular tube 61 can be driven to move up and down vertically by the cylinder 64. In this embodiment, the connector 63 can be a connecting piece or a connecting plate structure, such as... Figure 6 As shown.

[0050] In another embodiment, the connector 63 has an actuating part 631 that can act on the drive plate 65 to drive the lifting plate 221. This allows the lifting plate 221 and the semi-circular tube 61 to share a common drive source, such as... Figure 8 As shown, in this embodiment, the connector 63 is a connecting frame, while the actuating part 631 is a protrusion offset from the cylinder 64. Specifically, the actuating part 631 of the connector 63 is initially positioned above the drive plate 65. After the semicircular tube 61 acts downward on the first rotating sleeve 7 and the second rotating sleeve 5, and the first limiting strip 71 and the second limiting strip 51 rotate into position, the actuating part 631 of the connector 63 begins to contact the drive plate 65, driving the drive plate 65, the lifting plate 221, and the workpiece to move downward. After the busbar welding is completed, the connector 63 moves upward, causing the actuating part 631 of the connector 63 to separate from the drive plate 65. Under the action of the return spring 223, the lifting plate 221 moves upward, driving the welded busbar to move upward. As the connector 63 continues to move, the first rotating sleeve 7 and the second rotating sleeve 5 are reset, thereby causing the first limiting strip 71 and the second limiting strip 51 to rotate to the middle limiting position, waiting for the next welding.

[0051] This driving method, through the design of the separable operation of the action part 631 and the drive plate 65, can limit the order of lifting of the limit bar and the lifting plate 221 from the hardware, avoiding interference. At the same time, the two share the same power source, which can simplify the device and reduce costs.

[0052] In another embodiment, an automatic welding machine for busbar processing is also disclosed, comprising the positioning mechanism and welding robotic arm of any of the above embodiments. The welding robotic arm is a three-axis automated laser welding arm. After the connecting surfaces of two workpieces are aligned at a specific position, the robotic arm only needs to weld along the connecting surfaces. In addition, to improve stability, besides the aforementioned positioning mechanism, a pressing module can be provided. After the two workpieces to be welded are aligned, the pressing module can fix them onto the placement plate 2 from top to bottom, preventing slight shaking from affecting the docking accuracy.

[0053] The working principle is as follows: During positioning, the two workpieces to be welded are first placed on the lifting plate 221 of the second station 22 and the first station 21, respectively. The specific operation is as follows: The workpiece placed on the first station 21 has its straight sidewall aligned with the sidewall of the limiting plate 3, and its oblique sidewall aligned with the sidewall of the first limiting strip 71, thus positioning the workpiece. The workpiece placed on the lifting plate 221 has its straight sidewall aligned with the sidewall of the limiting plate 3, and its oblique sidewall aligned with the sidewall of the second limiting strip 51. Since the sidewalls of the first limiting strip 71 and the second limiting strip 51 coincide in the vertical direction, the two workpieces are brought together in the vertical projection direction.

[0054] Subsequently, the semicircular tube 61 is controlled to move downwards, and under the action of the slide groove, the first rotating sleeve 7 and the second rotating sleeve 5 are driven to rotate in opposite directions, so that the first limiting strip 71 and the second limiting strip 51 move to the outer space of the placement plate 2 to avoid interference.

[0055] Next, the lifting plate 221 is controlled to move downward, so that the workpiece located at the second station 22 moves downward and aligns with the workpiece located at the first station 21. Then, the welding robot arm is controlled to weld along the contact surface of the two workpieces.

[0056] After welding is completed, the lifting plate 221 returns to its original position and moves the welded busbar upward, away from the area of ​​the placement plate 2, so that the busbar can be removed.

[0057] Finally, control the semi-circular tube 61 to move upward and reset, so that the first limit bar 71 and the second limit bar 51 are reset to their initial positions, waiting for the next welding operation.

[0058] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A positioning mechanism for busbar processing, comprising a platform, characterized in that, A horizontally arranged placement plate is fixedly installed on the upper end of the platform. The placement plate is provided with a first workstation and a second workstation. The first workstation and the second workstation are offset in the vertical direction and correspond to each other in the horizontal direction. The second workstation is configured to be able to move up and down in the vertical direction to drive the workpiece located on the second workstation to contact or separate from the workpiece on the first workstation. The platform is fixedly equipped with columns and two sets of limiting plates. The columns are movably equipped with a first limiting strip and a second limiting strip. When the first and second limiting strips are in the first position, they can cooperate with the limiting plates to limit the workpieces placed at the first and second workstations respectively, so that the workpieces at the first and second workstations are in corresponding positions in the horizontal direction. When the first and second limiting strips are in the second position, the workpiece at the second workstation can move downward and contact the workpiece at the first workstation.

2. The positioning mechanism for busbar processing according to claim 1, characterized in that, The first station is located on the upper surface of the placement plate, and the second station includes a mounting groove. A lifting plate is provided in the mounting groove. The lifting plate is driven by a driving mechanism and can move in the vertical direction. When the lifting plate is above the placement plate, the second station is higher than the first station. When the lifting plate is in the mounting groove, the upper surface of the lifting plate is flush with the upper surface of the placement plate, so that the first station and the second station are flush.

3. The positioning mechanism for busbar processing according to claim 2, characterized in that, A positioning protrusion is fixedly connected in the mounting groove. The distance from the upper surface of the positioning protrusion to the upper surface of the placement plate is equal to the thickness of the lifting plate. When the lifting plate descends to contact the positioning protrusion, the upper surface of the lifting plate can be flush with the upper surface of the placement plate.

4. The positioning mechanism for busbar processing according to claim 2, characterized in that, A vertical hole is provided in the mounting groove, and a sliding rod is slidably installed in the vertical hole. The upper end of the sliding rod is fixedly connected to the lower surface of the lifting plate. A return spring is sleeved on the sliding rod, and the two ends of the return spring abut against the bottom wall of the mounting groove and the lower surface of the lifting plate, respectively.

5. A positioning mechanism for busbar processing according to claim 1, characterized in that, The column is coaxially rotatably connected to a first rotating sleeve and a second rotating sleeve. The position of the second rotating sleeve is higher than that of the first rotating sleeve. The first limiting strip is fixedly connected to the side wall of the first rotating sleeve, and the second limiting strip is fixedly connected to the side wall of the second rotating sleeve. The column is provided with a driving component that acts on the first rotating sleeve and the second rotating sleeve simultaneously. When the driving component is in the initial position, the first limiting strip and the second limiting strip are in the first position. When the driving component moves up or down a certain distance along the column, it will drive the first rotating sleeve and the second rotating sleeve to rotate in opposite directions and drive the first limiting strip and the second limiting strip to move to the second position.

6. A positioning mechanism for busbar processing according to claim 5, characterized in that, The inner wall of the driving component has an arc surface. The first rotating sleeve and the second rotating sleeve are both connected to the arc surface through a sliding groove mechanism, so that when the driving component moves up and down, the first rotating sleeve and the second rotating sleeve can rotate synchronously in opposite directions.

7. A positioning mechanism for busbar processing according to claim 5, characterized in that, A cylinder is fixedly installed on the upper part of the platform. A connector is fixedly connected to the input end of the cylinder. The connector is fixedly connected to the side wall of the driving component, so that the cylinder can drive the driving component to move up and down.

8. A positioning mechanism for busbar processing according to claim 6, characterized in that, The arc surface is provided with a first sliding groove and a second sliding groove. A first sliding column and a second sliding column are fixedly connected to the side walls of the first rotating sleeve and the second rotating sleeve. The first sliding column is slidably disposed in the first sliding groove, and the second sliding column is slidably disposed in the second sliding groove.

9. A positioning mechanism for busbar processing according to claim 6, characterized in that, The driving component is a semi-circular tube. A top plate is fixedly connected to the upper end of the semi-circular tube, and a positioning rod with a non-circular cross-section is fixedly connected to the lower end of the top plate. A positioning groove is opened at the upper end of the column, and the lower end of the positioning rod is inserted into the positioning groove. A positioning spring is also provided between the positioning rod and the bottom of the positioning groove.

10. An automatic welding machine for busbar processing, characterized in that, The positioning mechanism and welding robotic arm are included in any one of claims 1-9.

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