Positioning system for vertical welding seam of welding head

Abstract

The utility model relates to the technical field of laser welding equipment, in particular to a welding head vertical welding seam positioning system which comprises a welding mechanism, the welding mechanism comprises a welding head, the welding head can emit a welding laser beam, the welding laser beam is used for welding two workpieces, and a centering mechanism is axially installed on the side face of the welding head through an adjusting assembly. The centering mechanism comprises a second laser generator, the second laser generator can emit a second laser beam, and the adjusting assembly is used for adjusting the posture of the second laser generator. According to the laser welding device, the centering mechanism is arranged, the second laser beam is parallel to the welding laser beam through the adjusting assembly, the posture of the welding laser beam can be reflected through the second laser beam, the position relation between the welding laser beam and the butt joint seam can be judged in an auxiliary mode by observing the position relation between the second laser beam and the butt joint seam, and the welding mechanism can be adjusted conveniently; the second laser beam and the welding laser beam are different in color, so that a user can observe conveniently.

Description

Technical Field

[0001] This utility model relates to the field of laser welding equipment technology, specifically a vertical weld seam positioning system for welding heads. Background Technology

[0002] Laser welding uses a high-power laser beam to focus and control the irradiation of a material surface. The material surface absorbs the laser energy and converts it into heat energy, causing the material to locally heat up and melt. After cooling and solidification, the same or different materials are joined together.

[0003] Before laser welding, the welding head needs to be adjusted so that the laser focus falls on the joint between the two workpieces. However, this adjustment method can only ensure that the laser spot is on the weld, not that the welding head is completely perpendicular to the weld. This has little impact when welding thinner workpieces, but when welding thicker workpieces, the weld and the butt joint of the workpieces may not coincide on the same axis, causing the weld to deviate from the butt joint and thus affecting the weld strength. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a vertical weld seam positioning system for welding heads.

[0005] The technical solution of this utility model is:

[0006] A vertical weld seam positioning system for welding joints, comprising:

[0007] A welding mechanism includes a welding head that emits a welding laser beam for welding two workpieces. An alignment mechanism is axially mounted on the side of the welding head via an adjustment component. The alignment mechanism includes a second laser generator that emits a second laser beam. The adjustment component is used to adjust the posture of the second laser generator.

[0008] Preferably, the welding head is mounted on a motion mechanism, which can be a machine tool or a robotic arm.

[0009] Preferably, the second laser generator is located in the direction of movement of the welding head during welding.

[0010] Preferably, the welding laser beam and the second laser beam are different colors.

[0011] Preferably, the second laser beam is cylindrical, the width of the second laser beam is 1-2 mm, and the power of the second laser beam does not exceed 5 mW.

[0012] Preferably, there is a butt joint between the workpieces, and the line connecting the light spots generated by the welding laser beam and the second laser beam irradiating the plane is parallel to the top surface of the butt joint between the workpieces.

[0013] Preferably, during positioning, the second laser beam needs to coincide with the starting end of the joint, and then move along the joint to the end, where the second laser beam also needs to coincide with the end of the joint.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, by setting up a centering mechanism and using an adjustment component to make the second laser beam and the welding laser beam parallel, can use the second laser beam to reflect the attitude of the welding laser beam. By observing the positional relationship between the second laser beam and the butt joint, it can help determine the positional relationship between the welding laser beam and the butt joint, which is convenient for adjusting the welding mechanism. The second laser beam and the welding laser beam are different colors, which makes it easy for the user to observe. Attached Figure Description

[0016] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the adjustment component structure in this utility model.

[0020] The meanings of the labels in the diagram are as follows:

[0021] 1. Welding mechanism; 11. Welding head; 12. Welding laser beam;

[0022] 2. Adjustment assembly; 21. Mounting block; 22. Fixing bracket; 23. Fixing bolt; 24. Adjustment bracket; 25. Elastic element; 26. Clip rod; 27. Adjustment stud; 28. Locking screw;

[0023] 3. Centering mechanism; 31. Second laser generator; 32. Second laser beam;

[0024] 4. Workpiece; 5. Butt joint. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Please see Figure 1-4 The present invention will describe the above technical solution in detail through the following embodiments:

[0028] A vertical weld seam positioning system for welding joints, comprising:

[0029] Welding mechanism 1 includes a welding head 11, which can emit a welding laser beam 12. The welding laser beam 12 is used for welding two workpieces 4. A centering mechanism 3 is axially mounted on the side of the welding head 11 through an adjustment component 2. The centering mechanism 3 includes a second laser generator 31, which can emit a second laser beam 32. The adjustment component 2 is used to adjust the posture of the second laser generator 31 so that the axis of the second laser beam 32 is parallel to the axis of the welding laser beam 12.

[0030] The adjustment component 2 includes a mounting block 21, which is fixedly mounted on the outer side of the welding head 11 by bolts. The outer side of the mounting block 21 is parallel to the axis of the welding laser beam 12.

[0031] A mounting bracket 22 is fixedly installed on the front side of the mounting block 21 by fixing bolts 23. An adjustment bracket 24 is provided parallel below the mounting bracket 22. An elastic element 25 is fixedly installed between the mounting bracket 22 and the adjustment bracket 24 by a snap-fit ​​rod 26.

[0032] The elastic element 25 can be a tension spring, and the elastic force of the elastic element 25 can drive the adjusting frame 24 to move towards the fixed frame 22.

[0033] The top surface of the fixed frame 22 is threaded with three adjusting studs 27, and the tail end of the adjusting stud 27 passes through the fixed frame 22 and abuts against the adjusting frame 24.

[0034] The axial orientation of the adjusting bracket 24 can be changed by rotating the adjusting stud 27.

[0035] The adjustment bracket 24 has a circular through hole in the middle and an opening on one side. A locking screw 28 is threadedly connected to the opening of the adjustment bracket 24. By rotating the locking screw 28, the size of the opening of the adjustment bracket 24 can be controlled.

[0036] The second laser generator 31 is inserted into the adjusting bracket 24 and coincides with the axis of the adjusting bracket 24. The second laser generator 31 can be fixed by tightening the locking screw 28. The posture of the second laser generator 31 can be adjusted by rotating one or more adjusting studs 27, thereby adjusting the axis of the second laser beam 32 to be parallel to the axis of the welding laser beam 12.

[0037] The welding head 11 is mounted on the motion mechanism, which can be a machine tool or a robotic arm.

[0038] The motion mechanism is used to drive the welding head 11 to move, thereby using the welding laser beam 12 to perform welding.

[0039] The second laser generator 31 is located in the direction of movement of the welding head 11 during welding.

[0040] The second laser generator 31 is located in the direction of movement of the welding head 11, which ensures that the second laser beam 32 and the welding laser beam 12 have the same movement path.

[0041] The welding laser beam 12 and the second laser beam 32 are different colors.

[0042] The welding laser beam 12 uses a red laser, while the second laser beam 32 uses a green laser. The different laser colors make it easier to observe.

[0043] The second laser beam 32 is cylindrical, with a width of 1-2 mm and a power not exceeding 5 mW.

[0044] In this embodiment, the second laser beam 32 has a width of 1 mm and a power of 2 mW. The second laser beam 32 is used to reflect the attitude of the welding laser beam 12 and does not need to participate in the welding process. Therefore, its power needs to be limited to within 5 mW to facilitate observation and avoid damaging the observer's eyes.

[0045] There is a butt joint 5 between the workpieces 4. The line connecting the light spots generated by the welding laser beam 12 and the second laser beam 32 irradiating the plane is parallel to the top surface of the butt joint 5 between the workpieces 4.

[0046] The butt joint 5 is used for welding between two workpieces 4. The width of the butt joint 5 is adjusted according to the thickness and material of the workpieces 4. The width of the second laser beam 32 also needs to be adjusted according to the width of the butt joint 5. The width of the second laser beam 32 needs to be greater than the width of the butt joint 5.

[0047] The line connecting the light spot generated by the welding laser beam 12 and the second laser beam 32 irradiating the plane is parallel to the top surface of the butt joint 5 between the workpieces 4, which ensures that when the second laser beam 32 moves along the butt joint 5, the welding laser beam 12 will also move along the butt joint 5.

[0048] During positioning, the second laser beam 32 needs to coincide with the starting end of the butt joint 5, and then move along the butt joint 5 to the end, where the second laser beam 32 also needs to coincide with the end of the butt joint 5.

[0049] When the second laser beam 32 coincides with the starting end of the butt joint 5, it indicates that the welding laser beam 12 is completely perpendicular to the starting end of the butt joint 5.

[0050] When the second laser beam 32 moves to the end of the butt joint 5, it also coincides with the end of the butt joint 5, indicating that the welding laser beam 12 is also completely perpendicular to the end of the butt joint 5.

[0051] It is important to note that during the movement, the spot of the second laser beam 32 must always fall on the center of the joint 5.

[0052] In this embodiment, when the operator uses this device, the adjustment component 2 is used to adjust the posture of the second laser generator 31 to ensure that the second laser beam 32 is parallel to the welding laser beam 12.

[0053] Then adjust the welding head 11 so that the line connecting the light spots generated by the welding laser beam 12 and the second laser beam 32 irradiating the plane is parallel to the top surface of the butt joint 5 between the workpieces 4.

[0054] Using a motion structure, the welding head 11 is driven to move, so that the second laser beam 32 coincides with the starting end of the butt joint 5.

[0055] Then control the welding head 11 to move along the butt joint 5 to the end. Observe whether the second laser beam 32 coincides with the end of the butt joint 5.

[0056] It is also necessary to observe that during the movement, the second laser beam 32 spot always moves along the butt joint 5.

[0057] When the second laser beam 32 coincides with both the starting and ending ends of the butt joint 5 simultaneously, and remains aligned with the butt joint 5 throughout its movement, it can be determined that the welding laser beam 12 is completely perpendicular to the butt joint 5.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vertical weld seam positioning system for welding joints, characterized in that, include: Welding mechanism (1), the welding mechanism (1) includes a welding head (11), the welding head (11) is capable of emitting a welding laser beam (12), the welding laser beam (12) is used for welding two workpieces (4), the welding head (11) is axially mounted with a centering mechanism (3) on its side via an adjustment component (2), the centering mechanism (3) includes a second laser generator (31), the second laser generator (31) is capable of emitting a second laser beam (32), the adjustment component (2) is used to adjust the posture of the second laser generator (31).

2. The vertical weld seam positioning system for welding joints as described in claim 1, characterized in that: The welding head (11) is mounted on a motion mechanism, which can be a machine tool or a robotic arm.

3. The vertical weld seam positioning system for welding joints as described in claim 2, characterized in that: The second laser generator (31) is located in the direction of movement of the welding head (11) during welding.

4. The vertical weld seam positioning system for welding joints as described in claim 3, characterized in that: The welding laser beam (12) and the second laser beam (32) are different colors.

5. A vertical weld seam positioning system for a welding joint as described in claim 4, characterized in that: The second laser beam (32) is cylindrical, the width of the second laser beam (32) is 1-2mm, and the power of the second laser beam (32) does not exceed 5mw.

6. A vertical weld seam positioning system for a welding joint as described in claim 1, characterized in that: There is a butt joint (5) between the workpieces (4), and the line connecting the light spots generated by the welding laser beam (12) and the second laser beam (32) irradiating the plane is parallel to the top surface of the butt joint (5) between the workpieces (4).

7. A vertical weld seam positioning system for a welding joint as described in claim 6, characterized in that: During positioning, the second laser beam (32) needs to coincide with the starting end of the butt joint (5), and then move along the butt joint (5) to the end, where the second laser beam (32) also needs to coincide with the end of the butt joint (5).

Images