Automatic rotating spot welding device

Abstract

The utility model discloses an automatic rotary spot welding device, which relates to the technical field of welding equipment, and comprises an electric rotary table, three six-axis adjusting frames are arranged on the periphery of the electric rotary table at equal intervals, and an XY hollow adjusting table is fixed on the electric rotary table, so that the coordinate position of a limiting block can be adjusted by the XY hollow adjusting table. A positioning sleeve is arranged in the limiting block in a limiting mode, an electric rotating table is matched with laser emission of a laser head, the welding task of a complex structure can be completed, accurate angle adjustment can be achieved, the automation degree is high, the welding process is more accurate, and the welding quality and efficiency are improved; the positioning sleeve and the limiting block are used in a matched mode, the laparoscope can be fixed only by screwing the pressing bolt, the laparoscope is easy and fast to install and position, the operation difficulty is lowered, forward installation welding and reverse installation welding are supported, and repeated positioning is not needed.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to an automatic rotary spot welding device. Background Technology

[0002] Rotary spot welding is a highly efficient and high-quality welding technology that achieves welding by rotating electrodes or welding heads. It can significantly improve production efficiency and welding quality. This technology is highly adaptable and suitable for a variety of materials and workpieces, including automotive parts, batteries, and home appliances. Rotary spot welding equipment is usually equipped with real-time monitoring and automatic alarm functions to ensure the stability and consistency of the welding process. In addition, it can achieve multi-angle welding and reduce welding defects such as porosity and spatter, making it particularly suitable for large-scale production environments.

[0003] In the process of 360° rotational welding of the connection parts of a laparoscope using a laser welding machine, after each spot weld, the workpiece needs to be manually rotated 2° and rested for more than 2 seconds before the next welding. Because three-point welding is used, a single part needs to be spot welded 60 times. This welding method has the following disadvantages: First, manual rotation is prone to error, resulting in uneven welds. It is also tiring for operators and prone to mistakes, leading to time-consuming and slow welding. Second, the laparoscope needs to be mounted in both directions. After the upper part of the laparoscope is welded, it needs to be inverted and placed on another set of machines to weld the lower part. The position needs to be adjusted repeatedly each time, which is time-consuming and labor-intensive. Third, it is impossible to view and record the welding status in real time, which is not conducive to error correction and debugging of the welding equipment. Therefore, this utility model discloses an automatic rotational spot welding device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an automatic rotary spot welding device to solve the problems of the shortcomings of traditional rotary electric welding equipment mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:

[0006] An automatic rotary spot welding device includes an electric rotary table, three six-axis adjustment frames equidistantly arranged around the periphery of the electric rotary table, an XY hollow adjustment platform fixed on the electric rotary table so that the coordinate position of the limit block can be adjusted by the XY hollow adjustment platform, a positioning sleeve is provided inside the limit block, a laparoscope is detachably connected inside the positioning sleeve, and a video microscope and a laser head are installed on each of the three six-axis adjustment frames, with the video microscope and laser head facing the welding position of the laparoscope.

[0007] As a further embodiment of this utility model, the limiting block has an insertion hole in the middle, and multiple baffles are fixed on the upper edge of the limiting block, and the multiple baffles are all set to fit against the outer wall of the positioning sleeve.

[0008] As a further embodiment of this utility model, a guide groove is provided between the upper and lower end faces of the positioning sleeve, and a notch is provided on one side of the guide groove.

[0009] As a further embodiment of this utility model, the positioning sleeve is provided with at least two threaded holes, the two threaded holes being located on adjacent sides of the positioning sleeve respectively, and each threaded hole is threaded with a clamping bolt.

[0010] As a further embodiment of this invention, the central axis of the video microscope intersects the central axis of the laser head at a point, and this point is located at the welding position of the laparoscope.

[0011] As a further embodiment of this utility model, the XY hollow adjustment platform includes a base fixed to the surface of an electric rotary table with screws. An X-axis adjustment platform is fixedly connected to one side of the base. An X-axis screw is threadedly connected to the X-axis adjustment platform. One end of the X-axis screw is threadedly connected to an X-axis slider that can slide linearly along the X-axis adjustment platform. Two parallel X-axis guide rails are fixed to the upper side of the base with screws. An intermediate seat is slidably connected between the two X-axis guide rails, and the intermediate seat is bolted to the X-axis slider.

[0012] As a further embodiment of this utility model, the XY hollow adjustment platform also includes a Y-axis adjustment platform fixed to one side of the intermediate seat. A Y-axis screw is threadedly connected to the Y-axis adjustment platform, and a Y-axis slider that can slide linearly along the Y-axis adjustment platform is threadedly connected to one end of the Y-axis screw. Two parallel Y-axis guide rails are screwed to the upper side of the intermediate seat, and an assembly seat that is screwed to the limit block is slidably connected between the two Y-axis guide rails.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model discloses an automatic rotary spot welding device. The electric rotary table, in conjunction with the laser emission of the laser head, can complete welding tasks of complex structures. It can achieve precise angle adjustment, has a high degree of automation, makes the welding process more accurate, and improves welding quality and efficiency.

[0015] This utility model discloses an automatic rotary spot welding device. The XY hollow adjustment table can adjust the coordinate position of the limiting block to achieve precise adjustment of the welding position. The positioning sleeve and the limiting block are used together. The laparoscope can be fixed by simply tightening the clamping bolt, which makes the installation and positioning of the laparoscope simple and quick, reduces the operation difficulty, and supports both upright and inverted welding without the need for repeated positioning.

[0016] This invention relates to an automatic rotating spot welding device. Three sets of video microscopes can simultaneously observe and record the welding status of three weld points. With the help of an HDMI splitter and recorder, the operator can monitor the welding process in real time on the monitor, which is convenient for subsequent quality inspection and problem tracking. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a perspective view of an automatic rotary spot welding device according to the present invention;

[0019] Figure 2 This is a top view of an automatic rotary spot welding device according to the present invention;

[0020] Figure 3 This is a side view of an automatic rotary spot welding device according to the present invention;

[0021] Figure 4 This is a schematic diagram of the positioning structure of the laparoscope in an automatic rotating spot welding device according to the present invention.

[0022] Figure 5 This is an exploded view of the XY hollow adjustment table in an automatic rotary spot welding device of this utility model.

[0023] Figure 6 This is an exploded view of the positioning structure of the laparoscope in an automatic rotating spot welding device according to this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Electric rotary table; 2. Six-axis adjustment frame; 3. XY hollow adjustment table; 31. Base; 32. X-axis adjustment platform; 33. X-axis screw; 34. X-axis slider; 35. X-axis guide rail; 36. Intermediate seat; 37. Y-axis adjustment platform; 38. Y-axis screw; 39. Y-axis slider; 310. Y-axis guide rail; 311. Assembly seat; 4. Limit block; 41. Insertion hole; 42. Baffle; 5. Positioning sleeve; 51. Guide groove; 52. Notched groove; 53. Threaded hole; 54. Clamping bolt; 6. Laparoscope; 7. Video microscope; 8. Laser head. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Please see Figure 1-6 This utility model provides an automatic rotary spot welding device, including an electric rotary table 1. Three six-axis adjustment frames 2 are equidistantly arranged around the electric rotary table 1, and a video microscope 7 and a laser head 8 are installed on each of the three six-axis adjustment frames 2.

[0028] Specifically, the electric rotary table 1 can achieve circumferential rotation on the horizontal plane to change the welding position of the laparoscope 6, and the six-axis adjustment frame 2 can perform welding tasks with precise positioning in six degrees of freedom (three spatial coordinate axes X, Y, and Z, and rotation around these three axes). The two work together to realize an automated welding and monitoring process. It is worth noting that the electric rotary table 1, the six-axis adjustment frame 2, the video microscope 7, and the laser head 8 are all existing technologies. This application does not limit the specific models of the electric rotary table 1, the six-axis adjustment frame 2, the video microscope 7, and the laser head 8.

[0029] Furthermore, both the video microscope 7 and the laser head 8 are oriented toward the welding position of the laparoscope 6, and the central axis of the video microscope 7 intersects the central axis of the laser head 8 at a point located at the welding position of the laparoscope 6.

[0030] Specifically, the video microscope 7 is used to observe and monitor the welding process, while the laser head 8 is used to perform the actual welding task, allowing the operator to observe the welding point in real time.

[0031] Furthermore, an XY hollow adjustment platform 3 is fixed on the electric rotary table 1 so that the coordinate position of the limit block 4 can be adjusted by the XY hollow adjustment platform 3. The XY hollow adjustment platform 3 includes a base 31 fixed to the table surface of the electric rotary table 1 by screws. An X-axis adjustment platform 32 is fixedly connected to one side of the base 31. An X-axis screw 33 is threadedly connected to the X-axis adjustment platform 32. An X-axis slider 34 that can slide linearly along the X-axis adjustment platform 32 is threadedly connected to one end of the X-axis screw 33. Two parallel X-axis guide rails 35 are fixed to the upper side of the base 31 by screws. An intermediate seat 36 is slidably connected between the two X-axis guide rails 35, and the intermediate seat 36 is bolted to the X-axis slider 34.

[0032] Specifically, when the X-axis screw 33 rotates, it drives the X-axis slider 34 to move along the X-axis adjustment platform 32, and the X-axis slider 34 drives the intermediate seat 36 to move synchronously, which can realize displacement in the X-axis direction. The X-axis guide rail 35 can ensure the precise sliding of the intermediate seat 36. It is worth noting that a handle is provided at one end of the X-axis screw 33 for easy gripping and operation.

[0033] Furthermore, the XY hollow adjustment platform 3 also includes a Y-axis adjustment platform 37 fixed to one side of the intermediate seat 36. A Y-axis screw 38 is threadedly connected to the Y-axis adjustment platform 37. One end of the Y-axis screw 38 is threadedly connected to a Y-axis slider 39 that can slide linearly along the Y-axis adjustment platform 37. Two parallel Y-axis guide rails 310 are screwed to the upper side of the intermediate seat 36. An assembly seat 311 that is screwed to the limit block 4 is slidably connected between the two Y-axis guide rails 310.

[0034] Specifically, when the Y-axis screw 38 rotates, it drives the Y-axis slider 39 to move along the Y-axis adjustment platform 37, and the Y-axis slider 39 drives the assembly seat 311 to move synchronously, which can realize displacement in the Y-axis direction. The Y-axis guide rail 310 can ensure the precise sliding of the assembly seat 311. It is worth noting that a handle is provided at one end of the Y-axis screw 38 for easy gripping and operation.

[0035] Furthermore, a positioning sleeve 5 is provided inside the limiting block 4, and a laparoscope 6 is detachably connected inside the positioning sleeve 5. An insertion hole 41 is provided in the middle of the limiting block 4, and multiple baffles 42 are fixed on the upper edge of the limiting block 4, and the multiple baffles 42 are all set to fit against the outer wall of the positioning sleeve 5.

[0036] Specifically, the insertion hole 41 is used to place the laparoscope 6 parts, and the baffle 42 restricts the movement of the positioning sleeve 5 to ensure its stability during welding. The inner edge of the baffle 42 can be designed with a certain chamfer or rounded corner so that the positioning sleeve 5 can be smoothly inserted into the limiting block 4, which improves the convenience of operation and reduces the risk of wear and damage to parts. After the upright welding is completed, the positioning sleeve 5 and the laparoscope 6 are removed together and then placed upside down on the limiting block 4 to achieve inverted welding. It is worth noting that since the positioning sleeve 5 and the laparoscope 6 have been precisely aligned during the upright welding, reversing the assembly of the positioning sleeve 5 and the laparoscope 6 eliminates the need to realign the positioning sleeve 5 and the laparoscope 6, thereby improving production efficiency and ensuring the welding effect.

[0037] Furthermore, a guide groove 51 is provided between the upper and lower end faces of the positioning sleeve 5, and a notch 52 is provided on one side of the guide groove 51.

[0038] Specifically, the guide groove 51 provides a guide path for the laparoscope 6, allowing the laparoscope 6 to be smoothly inserted into or removed from the positioning sleeve 5 along the guide groove 51. The notch 52 can serve as an operating space, providing a position for the operator to apply force with their fingers or tools when installing or removing the laparoscope 6, making it easier to grasp or push the laparoscope 6.

[0039] Furthermore, the positioning sleeve 5 is provided with at least two threaded holes 53, the two threaded holes 53 are respectively located on adjacent sides of the positioning sleeve 5, and each threaded hole 53 is threaded with a clamping bolt 54.

[0040] Specifically, the clamping bolt 54 can be rotated to adjust its depth in the threaded hole 53, thereby adjusting the pressure on the laparoscope 6. The clamping bolt 54 is set at multiple angles, so that the clamping bolt 54 can fix the laparoscope 6 from different angles, ensuring the stability of the laparoscope 6.

[0041] The working principle and usage steps are as follows:

[0042] Initial Installation Preparation: First, the operator needs to accurately place the positioning sleeve 5, which houses the laparoscope 6, onto the limiting block 4. During this process, the guide groove 51 on the positioning sleeve 5 plays a crucial guiding role. Its precisely designed width, depth, and length (e.g., width 5mm ± 0.1mm, depth 3mm ± 0.05mm, length determined according to the actual length of the positioning sleeve 5) allow the laparoscope 6 to be smoothly and accurately inserted into the positioning sleeve 5 along the guide groove 51, avoiding deviation or jamming during insertion. Simultaneously, the presence of the guide groove 51 also provides a certain constraint for the laparoscope 6 within the positioning sleeve 5, ensuring its stable axial position during subsequent operations. Once the positioning sleeve 5 is in place, the clamping bolts 54 located in at least two threaded holes 53 on adjacent sides of the positioning sleeve 5 begin to provide fixation. The operator rotates the clamping bolts 54 to gradually push them deeper into the threaded holes 53. Because multiple clamping bolts 54 apply pressure to the laparoscope 6 from different angles, they work together to effectively fix the laparoscope 6 within the positioning sleeve 5, preventing any slight displacement or rotation during welding. This multi-angle fixing method is based on mechanical principles. Through a rationally distributed clamping force, it counteracts various external forces that may interfere with the welding process, such as vibration and torque, ensuring the absolute stability of the laparoscope 6 during welding, thus providing a solid foundation for high-quality welding.

[0043] Formal Welding Process: During the formal welding stage, the PLC controller, as the core control unit of the entire device, begins to perform its precise control function. Based on the preset welding program or operator input, the PLC controller sends control signals to the electric rotary table 1, precisely adjusting its rotation angle. The electric rotary table 1 possesses high-precision rotation capability, with a rotation angle range of 0 to 360 degrees and a rotation speed that can be precisely adjusted between 0.1 and 10 degrees per minute, achieving a rotation angle accuracy of ±0.1 degrees. This precise angle adjustment accurately positions the welding area of ​​the laparoscope 6 within the welding working area of ​​the laser head 8, ensuring that the laser head 8 can perform welding operations in the correct position. After receiving the welding command, the laser head 8 emits a high-energy laser beam according to the set welding parameters. The laser beam is focused on the welding area of ​​the laparoscope 6, melting the metal material through instantaneous high temperature to achieve a weld connection. During the welding process, the laser focusing adjustment device of the laser head 8 (with a focusing accuracy of ±0.05mm) can be finely adjusted according to the actual situation of the welding area to ensure that the laser beam is always accurately focused on the welding point, thereby obtaining a high-quality weld joint and ensuring that the welding strength, sealing performance, and appearance quality meet the requirements. Simultaneously, three sets of video microscopes 7, mounted on three six-axis adjustment frames 2, monitor the welding process in real time. The central axis of the video microscope 7 intersects precisely with the central axis of the laser head 8 at the welding position of the laparoscope 6. Its magnification ranges from 10x to 100x, and it features automatic focusing (with a focusing accuracy of ±0.1mm) and image enhancement functions, enabling it to clearly capture image details of the welding point. The image signals acquired by the three sets of video microscopes 7 are uniformly connected to an HDMI splitter. The HDMI splitter divides the video signal into multiple streams. One stream is transmitted to an HDMI recorder for real-time recording. The recorder stores the video data during the welding process for subsequent quality inspection, analysis, and problem tracing. The other stream is transmitted through the recorder to a monitor, allowing the operator to visually observe the welding status of the three weld points simultaneously. Through this real-time monitoring and recording mechanism, operators can promptly identify potential problems during the welding process, such as welding misalignment, uneven weld seam, and porosity, and take corresponding measures to adjust or correct them in a timely manner, ensuring the stability and consistency of welding quality.

[0044] Inverted Welding Operation: After the upright welding is completed, inverted welding is required to complete the welding task on the other side of the laparoscope 6. At this time, the operator removes the positioning sleeve 5, which already holds the laparoscope 6, from the limiting block 4. During this process, the notch 52 on the positioning sleeve 5 facilitates the operation. The shape and position design of the notch 52 allows the operator's fingers or tools to be easily inserted into the notch 52, applying appropriate force to remove the positioning sleeve 5 and the laparoscope 6 from the limiting block 4, avoiding difficulties or damage caused by insufficient operating space; after removal, the positioning sleeve 5 and the laparoscope 6 are rotated 180 degrees and then placed upside down on the limiting block 4. The insertion hole 41 in the middle of the limiting block 4 and the multiple baffles 42 fixed on the upper edge again play a role. The insertion hole 41 provides space for the laparoscope 6 components, ensuring that the inverted laparoscope 6 has a suitable position to accommodate within the limiting block 4. The baffle 42 fits tightly against the outer wall of the positioning sleeve 5, restricting its movement from multiple directions and ensuring its stable position during the inverted welding process. Similar to the upright welding process, after the inverted position is completed, the clamping bolts 54 on the positioning sleeve 5 are tightened again to secure the laparoscope 6 within the positioning sleeve 5, ready for inverted welding. The inverted welding process is essentially the same as the upright welding process. The PLC controller controls the electric rotary table 1 to adjust the welding angle, the laser head 8 emits a laser for welding, and the video microscope 7 monitors and records the welding process in real time, thus completing the entire welding work of the laparoscope 6. Through this design of both upright and inverted welding functions, this automatic rotary spot welding device can conveniently and quickly complete the all-around welding task of the laparoscope 6 without changing equipment or readjusting complex tooling, greatly improving production efficiency, reducing equipment space occupation, and ensuring the consistency and reliability of welding quality, adapting to the requirements of different welding processes.

Claims

1. An automatic rotary spot welding device comprising an electric rotary table (1), characterized in that, The electric rotating table (1) is provided with three six-axis adjusting frames (2) at equal intervals on the periphery, an XY hollow adjusting table (3) is fixed on the electric rotating table (1), so that the XY hollow adjusting table (3) can adjust the coordinate position of a limiting block (4), a positioning sleeve (5) is arranged in the limiting block (4) in a limiting manner, a laparoscope (6) is detachably connected in the positioning sleeve (5), video microscopes (7) and laser heads (8) are installed on the three six-axis adjusting frames (2), and the video microscopes (7) and the laser heads (8) are all directed to the welding position of the laparoscope (6).

2. An automatic rotary spot welding apparatus according to claim 1, wherein: A bushing (41) is formed in the middle of the limiting block (4), a plurality of baffle plates (42) are fixed to the upper side edge of the limiting block (4), and the baffle plates (42) are all arranged in abutment with the outer wall of the positioning sleeve (5).

3. An automatic rotary spot welding apparatus according to claim 1, wherein: Guide grooves (51) are arranged between the upper and lower side end faces of the positioning sleeve (5), and a missing groove (52) is arranged on one side of the guide groove (51).

4. An automatic rotary spot welding apparatus according to claim 1, wherein: At least two threaded holes (53) are arranged on the positioning sleeve (5), the threaded holes (53) are arranged on the adjacent side faces of the positioning sleeve (5), and compression bolts (54) are threadedly connected in the threaded holes (53).

5. An automatic rotary spot welding apparatus according to claim 1, wherein: The central axis of the video microscope (7) intersects with the central axis of the laser head (8) at a point, and the point is located on the welding position of the laparoscope (6).

6. An automatic rotary spot welding apparatus according to claim 1, wherein: The XY hollow adjusting table (3) comprises a base (31) fixed on the table top of the electric rotating table (1) by screws, an X-axis pitch adjusting platform (32) is fixedly connected to one side of the base (31), an X-axis screw rod (33) is threadedly connected to the X-axis pitch adjusting platform (32), one end of the X-axis screw rod (33) is threadedly connected to an X-axis sliding block (34) capable of linearly sliding along the X-axis pitch adjusting platform (32), two X-axis guide rails (35) parallel to each other are fixed to the upper side of the base (31) by screws, and an intermediate base (36) is slidably connected between the X-axis guide rails (35), and the intermediate base (36) is bolted with the X-axis sliding block (34).

7. An automatic rotary spot welding apparatus according to claim 6, wherein: The XY hollow adjusting table (3) further comprises a Y-axis pitch adjusting platform (37) fixed to one side of the intermediate base (36), a Y-axis screw rod (38) is threadedly connected to the Y-axis pitch adjusting platform (37), one end of the Y-axis screw rod (38) is threadedly connected to a Y-axis sliding block (39) capable of linearly sliding along the Y-axis pitch adjusting platform (37), two Y-axis guide rails (310) parallel to each other are fixed to the upper side of the intermediate base (36) by screws, and an assembly base (311) fixed with the limiting block (4) is slidably connected between the Y-axis guide rails (310).

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