Welding positioning device and laser welding apparatus

Abstract

The application discloses a welding positioning device and a laser welding equipment, which comprises a base plate, a first positioning mechanism, a second positioning mechanism and a third positioning mechanism. The first positioning mechanism is used for supporting and adsorbing a workpiece. The second positioning mechanism adopts a turnover clamping mode, can jointly clamp the workpiece with the first positioning mechanism, and performs abutting positioning on one side edge of the workpiece. The limiting piece of the third positioning mechanism performs abutting positioning on the other side edge of the workpiece, so that the position of the workpiece can be uniquely limited. A plurality of first positioning mechanisms, second positioning mechanisms and third positioning mechanisms are combined on the base plate, so that a plurality of workpieces can be quickly positioned and spliced, and subsequent tailor welding processing is facilitated. In addition, the adsorption assembly under the first positioning mechanism, the second positioning mechanism and the third positioning mechanism can also facilitate quick adjustment of the positions of the positioning mechanisms, so that quick changeover is facilitated, and the application range of the welding positioning device is improved.

Description

Technical Field

[0001] This application relates to the field of laser welding, and in particular to a welding positioning device and laser welding equipment. Background Technology

[0002] In the welding process of sheet metal, precise and stable clamping and positioning of the sheet metal is crucial, as it directly affects processing accuracy and product quality. Traditional positioning methods often use specially designed fixtures, where the outer contour of some limiting structures of the fixture matches the outer contour of the workpiece. However, such fixtures can only be used for one type of workpiece and cannot be quickly changed, limiting their applicability. Utility Model Content

[0003] This application proposes a welding positioning device and laser welding equipment, which can solve the problem of the limited applicability of fixtures in the process of plate welding.

[0004] This application proposes a welding positioning device, comprising:

[0005] substrate;

[0006] The first positioning mechanism includes a first adsorption component for adsorbing a substrate, a first mounting base disposed on the first adsorption component, and a second adsorption component disposed on the first mounting base, wherein the second adsorption component is used to receive and adsorb the workpiece.

[0007] The second positioning mechanism includes a third adsorption component for adsorbing a substrate, a second mounting base disposed on the third adsorption component, a pressure arm hinged at one end to the second mounting base, and a driving member for driving the pressure arm to flip. The section of the pressure arm away from the second mounting base is used to abut and position one side edge of the workpiece. The second adsorption component and the pressure arm can jointly clamp both sides of the workpiece.

[0008] The third positioning mechanism is located on one side of the second positioning mechanism and includes a fourth adsorption component for adsorbing the substrate, a third mounting base on the fourth adsorption component, and a limiting member on the third mounting base. The limiting member is used to abut and position the other edge of the workpiece.

[0009] In some embodiments, the limiting member includes a screw and a screw head disposed at the end of the screw. The screw is disposed on the upper end of the third mounting base and threadedly connected to the third mounting base. The screw head is eccentrically disposed with respect to the screw, and the side of the screw head is used to abut against the side of the workpiece.

[0010] In some embodiments, the first mounting base is provided with two second adsorption components, which are spaced apart and the gap between them forms a clearance groove.

[0011] In some embodiments, one end of the second adsorption component is provided with a mounting plate for closing one end of the clearance groove, and the other end of the second adsorption component is provided with a protective cover for closing the other end of the clearance groove. The protective cover is used to communicate with an external dust extraction device. The bottom of the second adsorption component is also provided with a bottom plate for closing the lower end of the clearance groove.

[0012] In some embodiments, the first positioning mechanism further includes an air blowing pipe disposed in the clearance groove, one end of the air blowing pipe being disposed on the mounting plate, and the pipe wall of the air blowing pipe having a plurality of air holes.

[0013] In some embodiments, the upper ends of the two side walls of the two second adsorption components spaced apart are provided with extensions facing each other, the two extensions closing the upper side of the clearance groove, and the air pipe is located directly below the extensions.

[0014] In some embodiments, the section of the pressure arm away from the second mounting base includes a clamping section for clamping a workpiece. The clamping section has a limiting portion on its lower side, which can be inserted into the clearance groove and is used to abut against the side of the workpiece.

[0015] In some embodiments, the second positioning mechanism further includes:

[0016] A buffer, disposed on the second mounting base, is used to abut against the pressure arm to buffer the downward pressure of the pressure arm;

[0017] The first positioning element is disposed on the first mounting base and located on one side of the buffer;

[0018] The second positioning element is disposed on the pressure arm and is used to dock with the second positioning element.

[0019] In some embodiments, the welding positioning device further includes a support platform disposed on one side of the first positioning mechanism, and a fifth adsorption component disposed on the lower side of the support platform. The fifth adsorption component is used to adsorb and install the support platform onto the substrate, and the support platform is used to support the workpiece.

[0020] This application also proposes a laser welding device, including a welding positioning device, and the laser welding device further includes a laser welding module disposed above the welding positioning device.

[0021] The welding positioning device and laser welding equipment in this embodiment include a substrate, a first positioning mechanism, a second positioning mechanism, and a third positioning mechanism. The first positioning mechanism supports and adsorbs the workpiece. The second positioning mechanism uses a flipping clamping method and can clamp the workpiece together with the first positioning mechanism, positioning one edge of the workpiece against it. The limiting component of the third positioning mechanism positions the other edge of the workpiece against it, thereby uniquely defining the position of the workpiece. Combining multiple first, second, and third positioning mechanisms on the substrate allows for rapid positioning and assembly of multiple workpieces for subsequent welding processing. Furthermore, the adsorption components under the first, second, and third positioning mechanisms facilitate rapid adjustment of their positions, enabling quick changeovers and expanding the applicability of this welding positioning device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the welding positioning device in one embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the first positioning mechanism and the second positioning mechanism in another embodiment of this application;

[0024] Figure 3 This is a cross-sectional view of the first positioning mechanism in another embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the structure of the second positioning mechanism in another embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the third positioning mechanism in another embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the support platform in another embodiment of this application.

[0028] Label Explanation:

[0029] 10. Substrate; 11. Workpiece; 20. First positioning mechanism; 21. First adsorption assembly; 22. First mounting base; 23. Second adsorption assembly; 24. Clearance groove; 25. Extension; 26. Air blowing pipe; 27. Mounting plate; 28. Protective cover; 30. Second positioning mechanism; 31. Third adsorption assembly; 32. Second mounting base; 33. Pressure arm; 34. Driving component; 35. Limiting part; 36. Buffer; 37. First positioning component; 38. Second positioning component; 40. Third positioning mechanism; 41. Fourth adsorption assembly; 42. Third mounting base; 43. Limiting component; 51. Fifth adsorption assembly; 52. Support platform;

[0030] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that all directional indicators, such as down, left, right, front, back, etc., in the embodiments of this application are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0033] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0034] Furthermore, the descriptions involving "first," "second," etc., in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0035] This application proposes a welding positioning device, referring to... Figures 1 to 6The welding positioning device includes: a substrate 10; a first positioning mechanism 20, including a first adsorption component 21 for adsorbing the substrate 10, a first mounting base 22 disposed on the first adsorption component 21, and a second adsorption component 23 disposed on the first mounting base 22, the second adsorption component 23 being used to receive and adsorb the workpiece 11; and a second positioning mechanism 30, including a third adsorption component 31 for adsorbing the substrate 10, a second mounting base 32 disposed on the third adsorption component 31, a pressure arm 33 with one end hinged to the second mounting base 32, and a drive mechanism. The driving member 34 for flipping the pressure arm 33, the section of the pressure arm 33 away from the second mounting seat 32 is used to abut and position one side edge of the workpiece 11, the second adsorption assembly 23 and the pressure arm 33 can jointly clamp both sides of the workpiece 11; the third positioning mechanism 40, located on one side of the second positioning mechanism 30, includes a fourth adsorption assembly 41 for adsorbing the substrate 10, a third mounting seat 42 on the fourth adsorption assembly 41, and a limiting member 43 on the third mounting seat 42, the limiting member 43 is used to abut and position the other side edge of the workpiece 11.

[0036] In this embodiment, the first positioning mechanism 20 is used to support and hold the workpiece 11. The second positioning mechanism 30 adopts a flipping clamping method and can clamp the workpiece 11 together with the first positioning mechanism 20. The second positioning mechanism 30 can abut and position one edge of the workpiece 11, and the limiting member 43 of the third positioning mechanism 40 abuts and positions the other edge of the workpiece 11, thereby uniquely defining the position of the workpiece 11. It is worth noting that the abutting and positioning of the two edges of the workpiece 11 should have a certain included angle. If the two edges are parallel, the position cannot be completely defined.

[0037] By combining multiple first positioning mechanisms 20, second positioning mechanisms 30 and third positioning mechanisms 40 on the substrate 10, multiple workpieces 11 can be quickly positioned and assembled for subsequent welding processing.

[0038] Specifically, each workpiece 11 has at least two welding ends. The second positioning mechanism 30 can be used to limit one of the welding ends, and the third positioning mechanism 40 can limit the side adjacent to the welding end, thus completing the positioning of the workpiece 11. Subsequently, the pressure arm 33 of the second positioning mechanism 30 corresponding to the workpiece 11 can be released to avoid another workpiece 11. Then, the welding end of the other workpiece 11 is brought against the welding end of the previous workpiece 11, and at the same time, the other side of the other workpiece 11 is limited by another set of third positioning mechanisms 40 to complete the limitation on the support surface of the first adsorption component 21. Then, the second adsorption component 23 adsorbs the other workpiece 11 to complete the limitation and fixation.

[0039] Figure 1The diagram illustrates welding scenarios for door rings, where workpieces 11 are connected end-to-end to form a ring or double-ring structure. The first positioning mechanism 20 and the second positioning mechanism 30 are located at the welding ends of workpieces 11, while the third positioning mechanism 40 can be located on the inner or outer side of the door ring. This allows for the positioning and assembly of the workpieces 11 within the door ring. Furthermore, the first adsorption assembly 21, the third adsorption assembly 31, and the fourth adsorption assembly 41 located below the first positioning mechanism 20, the second positioning mechanism 30, and the third positioning mechanism 40 can disconnect the adsorption during shape changes, allowing for rapid adjustment of the positions of these mechanisms. This facilitates quick shape changes to adapt to different workpieces 11 and different door ring models, thus expanding the applicability of this welding positioning device.

[0040] Further reference Figure 2 and Figure 3 The first positioning mechanism 20 serves as the basic support, and its first adsorption component 21 adsorbs and fixes the substrate 10, ensuring the stability of the entire device. The second adsorption component 23 on the first mounting base 22 receives the workpiece 11 and fixes it on the first positioning mechanism 20 through adsorption force, providing a reference for subsequent positioning and welding. The first adsorption component 21 and the second adsorption component 23 can be electromagnets or negative pressure adsorption methods. When energized, the electromagnet generates a strong magnetic field, which can firmly adsorb the ferromagnetic material substrate 10 and the workpiece 11, making it suitable for positioning heavy-duty workpieces 11.

[0041] The third adsorption component 31 of the second positioning mechanism 30 adsorbs the second mounting base 32 onto the substrate 10. One end of the pressure arm 33 is hinged to the second mounting base 32. The driving component 34 drives the pressure arm 33 to rotate, so that the section of the pressure arm 33 away from the second mounting base 32 abuts and positions one edge of the workpiece 11. The second adsorption component 23 and the pressure arm 33 together clamp both sides of the workpiece 11, ensuring the accurate positioning of the workpiece 11 during the welding process. The driving component 34 can be a pneumatic cylinder. Using a pneumatic cylinder as the driving component 34 can increase the rotation speed of the pressure arm 33, shorten the welding auxiliary time, improve production efficiency, and reduce the manufacturing cost of the equipment.

[0042] In some embodiments, further reference is made to Figure 5The limiting member 43 includes a screw and a screw head located at the end of the screw. The screw is located on the upper end of the third mounting base 42 and is threadedly connected to the third mounting base 42. The screw head is eccentrically positioned relative to the screw, and the side of the screw head is used to abut against the side of the workpiece 11. The eccentrically positioned screw head can be used to fine-tune the position of the limiting member 43. The screw head can be rotated so that each screw head abuts against the edge of the workpiece 11, further improving positioning efficiency. Two limiting members 43 are spaced apart on the third mounting base 42 so that both limiting members 43 abut against the side of the workpiece 11. The operator can fine-tune the lateral position of the screw head by rotating the screw to ensure that it tightly abuts against the edge of the workpiece 11. At the same time, two limiting members 43 are symmetrically positioned on the third mounting base 42, with the spacing preset according to the size of the workpiece 11. The two limiting members 43 work independently to achieve multi-directional positioning compensation, significantly improving positioning accuracy and flexibility.

[0043] Of course, the fourth adsorption component 41 of the third positioning mechanism 40 adsorbs the third mounting base 42 onto the substrate 10, and the limiting member 43 abuts against and positions the other edge of the workpiece 11, cooperating with the second positioning mechanism 30 to achieve complete positioning of the workpiece 11. Of course, the limiting member 43 can be an adjustable baffle instead of a screw and screw head. The baffle is connected to the third mounting base 42 via a slide rail, and can move along the slide rail and be fixed in different positions to accommodate workpieces 11 of different sizes. Using an adjustable baffle as the limiting member 43 simplifies the structure of the limiting member 43, reduces manufacturing costs, improves adaptability to workpieces 11 of different sizes, and reduces changeover time.

[0044] In some embodiments, the first mounting base 22 is provided with two second adsorption components 23, which are spaced apart, and the gap between them forms a clearance groove 24. Specifically, the second adsorption components 23 are electromagnetic adsorption heads or vacuum suction cups, mounted on the first mounting base 22, with an adjustable spacing of 20-50mm. The width of the clearance groove 24 is not less than the diameter of the laser beam (e.g., 5-15mm), ensuring that the laser beam can directly irradiate the joint of the workpiece 11. The surface of the second adsorption components 23 is coated with a high-temperature resistant ceramic coating to enhance durability. The clearance groove 24 effectively isolates the heat effect of the laser, reduces the damage rate of the adsorption components, and extends the equipment life. The laser beam can directly weld without obstruction, improving welding efficiency and joint strength, and avoiding quality problems caused by thermal deformation.

[0045] In some embodiments, one end of the second adsorption assembly 23 is provided with a mounting plate 27 for sealing one end of the clearance groove 24, and the other end of the second adsorption assembly 23 is provided with a protective cover 28 for sealing the other end of the clearance groove 24. The protective cover 28 is used to communicate with external dust extraction equipment. The bottom of the second adsorption assembly 23 is also provided with a bottom plate for sealing the lower end of the clearance groove 24. The mounting plate 27, the protective cover 28, and the bottom plate can seal the clearance groove 24 and create a protective gas atmosphere environment in the clearance groove 24. At the same time, the welding fumes and impurities generated are drawn to the external dust extraction equipment through the protective cover.

[0046] Specifically, the first positioning mechanism 20 also includes an air blowing pipe 26 disposed in the clearance groove 24. One end of the air blowing pipe 26 is mounted on the mounting plate 27, and the pipe wall of the air blowing pipe 26 has multiple air holes. The air blowing pipe 26 is a stainless steel or copper pipe with a diameter of 10-20mm. One end is fixed to the interface of the mounting plate 27, and the other end is connected to an air source. The pipe wall has 0.5-1mm air holes evenly distributed at intervals of 5-10mm. The holes are inclined at 45° towards the welding area, and inert gas is sprayed in a laminar flow to form a protective layer. The density of the air holes is optimized according to the welding heat input. The porous air blowing pipe 26 provides a uniform gas barrier, effectively preventing welding oxidation and spatter, and increasing the protective layer coverage by 30%. Combined with the design of the clearance groove 24, it reduces the risk of thermal damage to the equipment, ensures a defect-free weld, and extends the service life of the workpiece 11.

[0047] The external air blowing pipe 26 can be replaced by an adjustable air knife. By adjusting the angle of its blades, the air knife can precisely control the flow direction and coverage area of ​​the protective gas. Replacing the air blowing pipe 26 with an air knife improves the utilization rate of the protective gas, ensures adequate protection of the welding area, reduces welding defects, and improves welding quality.

[0048] In some embodiments, the upper ends of the side walls of the two second adsorption components 23, spaced apart, are provided with extensions 25 facing each other. The two extensions 25 narrow the upper side of the clearance groove 24, and the air blowing pipe 26 is located directly below the extensions 25. Specifically, the extensions 25 are L-shaped or U-shaped with a length of 10-30mm. They extend upward from the side wall of the adsorption component and then bend to form a narrow opening (reducing the groove width by 30-50%). The air blowing pipe 26 is installed directly below the extensions 25. The airflow is guided to the welding area through the narrowed opening, while the extensions 25 provide lateral support to prevent the workpiece 11 from sliding into the groove. The narrowed design focuses the airflow to enhance the protective effect and improves gas utilization. The extensions 25 act as physical guides to reduce the deviation of the workpiece 11 and also prevent foreign objects from entering the clearance groove 24, reducing the equipment failure rate.

[0049] In some embodiments, further reference is made to Figure 4The section of the pressure arm 33 away from the second mounting base 32 includes a clamping section for clamping the workpiece 11. The clamping section has a limiting part 35 that can be inserted into the clearance groove 24 and is used to abut against the side of the workpiece 11. Specifically, the side of the clamping section may have a V-shaped or U-shaped groove with a buffer silicone pad embedded in it, or a buffer sleeve may be fitted on the free end of the clamping section. The limiting part 35 has a needle-like or thin sheet structure, with an insertion depth covering the upper part of the clearance groove 24. When the pressure arm 33 is flipped, the limiting part 35 is precisely inserted into the groove and fits against the side wall of the workpiece 11. The limiting part 35 provides a precise positioning reference, eliminating lateral loosening; the buffer silicone or silicone sleeve reduces clamping impact.

[0050] In some embodiments, the second positioning mechanism 30 further includes: a buffer 36, disposed on the second mounting base 32, for abutting against the pressure arm 33 to buffer the downward pressure of the pressure arm 33; a first positioning member 37, disposed on the first mounting base 22, located on one side of the buffer 36; and a second positioning member 38, disposed on the pressure arm 33, for docking with the second positioning member 38. Specifically, a hydraulic buffer 36 or a spring buffer 36 can be used. The hydraulic buffer 36 has an adjustable damping system, and the oil pressure parameters are preset according to the weight of the workpiece 11. The first positioning member 37, disposed on the first mounting base 22, is a pin or a protrusion; the second positioning member 38, disposed on the pressure arm 33, is a groove or a magnetic interface. When the pressure arm 33 falls, the two dock to ensure consistent positioning. The installation position of the buffer 36 corresponds to the hinge point of the pressure arm 33, absorbing the downward pressure and mitigating impact vibration. The hydraulic buffer 36 provides stable buffering force, reducing the risk of impact damage to the workpiece 11; the first positioning member 37 and the second positioning member 38 ensure the reset accuracy of the pressure arm 33 and improve the stability of repeated positioning.

[0051] In some embodiments, further reference is made to Figure 6 The welding positioning device also includes a support platform 52 located on one side of the first positioning mechanism 20, and a fifth adsorption component 51 located below the support platform 52. The fifth adsorption component 51 is used to adsorb and install the support platform 52 onto the substrate 10, and the support platform 52 is used to support the workpiece 11. Specifically, the support platform 52 is a rectangular flat plate with customizable dimensions and a flat surface or with limiting grooves; the fifth adsorption component 51 uses electromagnetic or vacuum adsorption to provide fixing force; the height of the support platform 52 is adjustable to match the thickness of the workpiece 11, and quick-installation brackets are provided on both sides; when the workpiece 11 is too long or suspended, the support platform 52 provides auxiliary bearing points to distribute the load. The support platform 52 enhances the overall stability of the workpiece 11 and prevents welding deformation; the fifth adsorption component 51 supports quick disassembly and position adjustment to adapt to production line changes; it reduces vibration of the workpiece 11 and improves the reliability of the welding process. Of course, some height adjustment structures can also be set on the support platform 52 to adjust the support height of the support platform 52, so as to ensure that the workpiece can be horizontally supported when it is installed on the positioning device, and to ensure that the workpiece is laid flat without dents or bulges, so as to avoid affecting the splicing accuracy.

[0052] This application also proposes a laser welding device, including the aforementioned welding positioning device. The laser welding device further includes a laser welding module disposed above the welding positioning device. The laser welding module may include a laser welding head and a robotic arm that drives the laser welding head to move. The laser welding head can weld the welding ends of two assembled workpieces 11. When welding a door ring, the workpiece 11 can be welded at both ends.

[0053] In this embodiment, the working principle of the welding positioning device and laser welding equipment is as follows: The first positioning mechanism 20 is used to support and adsorb the workpiece 11. The second positioning mechanism 30 adopts a flipping clamping method, which can clamp the workpiece 11 together with the first positioning mechanism 20 and abut against one edge of the workpiece 11 for positioning. The limiting member 43 of the third positioning mechanism 40 abuts against the other edge of the workpiece 11 for positioning, thereby making the position of the workpiece 11 uniquely defined. Combining multiple first positioning mechanisms 20, second positioning mechanisms 30 and third positioning mechanisms 40 on the substrate 10 can quickly position and assemble multiple workpieces 11 for subsequent welding processing. In addition, the first adsorption component 21, the third adsorption component 31 and the fourth adsorption component 41 on the lower side of the first positioning mechanism 20, the second positioning mechanism 30 and the third positioning mechanism 40 can also be used to quickly adjust the position of the above positioning mechanism for quick changeover, thereby improving the applicability of this welding positioning device.

[0054] The above are only some or preferred embodiments of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A welding positioning device, characterized in that, include: substrate; The first positioning mechanism includes a first adsorption component for adsorbing a substrate, a first mounting base disposed on the first adsorption component, and a second adsorption component disposed on the first mounting base, wherein the second adsorption component is used to receive and adsorb the workpiece. The second positioning mechanism includes a third adsorption component for adsorbing a substrate, a second mounting base disposed on the third adsorption component, a pressure arm hinged at one end to the second mounting base, and a driving member for driving the pressure arm to flip. The section of the pressure arm away from the second mounting base is used to abut and position one side edge of the workpiece. The second adsorption component and the pressure arm can jointly clamp both sides of the workpiece. The third positioning mechanism is located on one side of the second positioning mechanism and includes a fourth adsorption component for adsorbing the substrate, a third mounting base on the fourth adsorption component, and a limiting member on the third mounting base. The limiting member is used to abut and position the other edge of the workpiece.

2. The welding positioning device according to claim 1, characterized in that, The limiting component includes a screw and a screw head disposed at the end of the screw. The screw is disposed on the upper end of the third mounting base and is threadedly connected to the third mounting base. The screw head is eccentrically disposed with respect to the screw. The side of the screw head is used to abut against the side of the workpiece.

3. The welding positioning device according to claim 2, characterized in that, The first mounting base is provided with two second adsorption components, which are spaced apart and the gap between them forms a clearance groove.

4. The welding positioning device according to claim 3, characterized in that, The second adsorption component has a mounting plate at one end for sealing one end of the clearance groove, and a protective cover at the other end for sealing the other end of the clearance groove. The protective cover is used to communicate with external dust extraction equipment. The bottom of the second adsorption component is also provided with a bottom plate for sealing the lower end of the clearance groove.

5. The welding positioning device according to claim 4, characterized in that, The first positioning mechanism also includes an air blowing pipe disposed in the clearance groove, one end of the air blowing pipe being disposed on the mounting plate, and the pipe wall of the air blowing pipe having a plurality of air holes.

6. The welding positioning device according to claim 5, characterized in that, The upper ends of the two side walls of the two second adsorption components are provided with extensions facing each other, and the two extensions close the upper side of the avoidance groove. The air pipe is located directly below the extension.

7. The welding positioning device according to claim 3, characterized in that, The section of the pressure arm away from the second mounting base includes a clamping section for clamping the workpiece. A limiting part is provided on the lower side of the clamping section. The limiting part can be inserted into the clearance groove and is used to abut against the side of the workpiece.

8. The welding positioning device according to claim 7, characterized in that, The second positioning mechanism also includes: A buffer, disposed on the second mounting base, is used to abut against the pressure arm to buffer the downward pressure of the pressure arm; The first positioning element is disposed on the first mounting base and located on one side of the buffer; The second positioning element is disposed on the pressure arm and is used to dock with the second positioning element.

9. The welding positioning device according to claim 8, characterized in that, The welding positioning device further includes a support platform disposed on one side of the first positioning mechanism, and a fifth adsorption component disposed on the lower side of the support platform. The fifth adsorption component is used to adsorb and install the support platform onto the substrate, and the support platform is used to support the workpiece.

10. A laser welding device, characterized in that, The laser welding equipment includes the welding positioning device according to any one of claims 1 to 9, and further includes a laser welding module disposed above the welding positioning device.

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