Tailored blank laser welding seam detection device

Abstract

The utility model discloses a tailored blank laser welding seam detection device which comprises a welding seam detection part and a conveying unit, the conveying unit is used for stably conveying tailored blanks in the conveying direction, and the welding seam detection part is used for detecting the welding seam quality of the tailored blanks; the adjusting unit is positioned at the top of the conveying unit; the adjusting unit comprises a first adjusting mechanism and a second adjusting mechanism capable of controlling the position of the welding seam detection component according to the position of the welding seam, and the first adjusting mechanism can adjust the distance between the welding seam detection component and the welding seam; a visual detection part is arranged at the front end of the adjusting unit and used for detecting the welding seam track of the tailor-welded part. The position of the welding seam is determined through the visual detection part, then the second adjusting mechanism controls the welding seam detection part to move along with the welding seam to detect the welding seam, the first adjusting mechanism can adjust the distance between the welding seam detection part and the welding seam, and therefore the welding seam detection device is suitable for detecting welding seams of tailor-welded parts of different materials or thicknesses; and the detection accuracy and universality can be improved.

Description

Technical Field

[0001] This application relates to the field of weld inspection technology, and in particular to a laser-welded weld inspection device. Background Technology

[0002] Laser welding is a process that uses a laser as a heat source to weld two or more metal sheets together. This technology is commonly used in automotive manufacturing, aerospace, and other fields because laser welding is fast, precise, and produces high-quality welds. However, welds may have defects such as porosity, cracks, and incomplete fusion, requiring inspection. Due to factors such as the material or thickness of the metal sheets being welded, the distance between the probe and the weld needs to be adjusted. Traditional handheld non-contact ultrasonic probes, which move along the weld to inspect it, are difficult to accurately determine the distance between the probe and the weld and are prone to vibration, affecting the accuracy of the inspection.

[0003] Existing automatic weld quality inspection devices determine the weld position through visual inspection devices and control the ultrasonic detection head for automatic inspection. Although they can replace manual inspection of welds, they cannot adjust the distance between the detection head and the weld. Therefore, they can only inspect welded parts of the same material or thickness, which is not very versatile and will affect the accuracy of weld quality inspection. Utility Model Content

[0004] To address the aforementioned problems, this application provides a laser-based weld seam inspection device that can adjust the distance between the weld seam and the inspection head, thereby enabling the inspection of weld seams from welded components of different materials or thicknesses, and improving inspection accuracy. The technical solution adopted is as follows:

[0005] A laser welding seam inspection device includes a weld seam inspection component and a conveying unit. The conveying unit is used to stably convey the welded parts along the conveying direction, and the weld seam inspection component is used to inspect the weld seam quality of the welded parts.

[0006] An adjustment unit located at the top of the conveying unit; the adjustment unit includes a first adjustment mechanism and a second adjustment mechanism that can control the position of the weld detection component according to the weld position, wherein the first adjustment mechanism can adjust the distance between the weld detection component and the weld.

[0007] The front end of the adjustment unit is equipped with a vision inspection component for detecting the weld seam trajectory of the welded parts.

[0008] Preferably, the first adjustment mechanism includes a bracket, a first link and a second link, and a synchronous drive assembly with one end moving closer to or further away from each other. A support platform is provided between the first link and the second link for placing the second adjustment mechanism.

[0009] More preferably, the synchronous drive assembly includes a power component and a bidirectional lead screw, as well as a movable nut sleeved on the outside of the bidirectional lead screw and connecting the first connecting rod and the second connecting rod respectively. The power component is used to drive the bidirectional lead screw.

[0010] Preferably, the conveying unit includes a linear drive mechanism and a vacuum adsorption platform disposed on top of the linear drive mechanism for adsorbing and fixing the welded parts, and the linear drive mechanism is used to drive the vacuum adsorption platform to move along the conveying direction.

[0011] More preferably, the vacuum adsorption platform fixes the welded parts by adsorption.

[0012] Preferably, the second adjustment mechanism includes a transmission belt and a mounting plate, as well as a power component for driving the transmission belt to rotate, wherein the mounting plate is connected to the transmission belt and the weld detection component is connected to the mounting plate.

[0013] Preferably, it further includes a control device, which is electrically connected to the visual inspection component, the adjustment unit, the weld inspection component, and the conveying unit, respectively.

[0014] Preferably, the second adjustment mechanism is further provided with a distance detection component for detecting the distance between the weld detection component and the weld.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] (1) In this application, the weld position is first determined by the visual inspection component, and then the weld inspection component is controlled by the second adjustment mechanism to move with the weld to inspect the weld. The first adjustment mechanism can adjust the distance between the weld inspection component and the weld, so as to inspect the welds of welded parts of different materials or thicknesses, which can improve the inspection accuracy.

[0017] (2) The vacuum adsorption platform can stably adsorb and fix the welded parts, avoiding displacement of the welded parts during movement, and further improving the accuracy of detection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 This is a three-dimensional schematic diagram of this application;

[0020] Figure 3 This application Figure 2 Enlarged view of a portion of point A in the middle.

[0021] In the picture:

[0022] 1. Conveying unit; 11. Linear drive mechanism; 12. Vacuum adsorption platform;

[0023] 2. Adjustment unit;

[0024] 3. First adjustment mechanism; 31. Bracket; 32. Synchronous drive assembly; 32.1. First power component; 32.2. Movable nut; 32.3. Double-acting lead screw; 33. Connecting rod one; 34. Connecting rod two; 35. Support platform;

[0025] 4. Second adjustment mechanism; 41. Second power component; 42. Transmission belt; 43. Mounting plate;

[0026] 5. Weld inspection components, 6. Visual inspection components, 10. Welded parts, 100. Welds. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments of this application, and not all 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.

[0028] See Figures 1 to 3 To further elaborate on this application:

[0029] Combination Figure 1 and Figure 2 A laser-welded weld inspection device includes a weld inspection component 5 and a conveying unit 1. The conveying unit 1 stably conveys the welded component 10 along the conveying direction, and the weld inspection component 5 is used to inspect the quality of the weld 100 of the welded component 10. The weld inspection component 5 is an ultrasonic testing instrument. The conveying unit 1 has a loading mechanism and a unloading mechanism connected to both ends. The loading mechanism and the unloading mechanism can be robotic arms used for loading and unloading the welded component 10.

[0030] An adjustment unit 2 is located at the top of the conveying unit 1; the adjustment unit 2 includes a first adjustment mechanism 3 and a second adjustment mechanism 4 that can control the position of the weld detection component 5 according to the position of the weld 100, wherein the first adjustment mechanism 3 can adjust the distance between the weld detection component 5 and the weld 100.

[0031] The front end of the adjustment unit 2 is provided with a visual inspection component 6 for detecting the trajectory of the weld seam 100 of the welded component 10.

[0032] Combination Figure 2In this embodiment, the first adjustment mechanism 3 includes a bracket 31, a first connecting rod 33, and a second connecting rod 34, as well as a synchronous drive assembly 32 that drives one end of each other to move closer or further apart. A support platform 35 is provided between the first connecting rod 33 and the second connecting rod 34 for placing the second adjustment mechanism 4. In an embodiment not shown, the support platform 35 may be driven by a reciprocating drive mechanism (such as a cylinder) to adjust its position.

[0033] The synchronous drive assembly 32 includes a first power component 32.1 and a bidirectional lead screw 32.3, as well as a movable nut 32.2 sleeved on the outside of the bidirectional lead screw 32.3 and connecting the first connecting rod 33 and the second connecting rod 34 respectively. The first power component 32.1 is used to drive the bidirectional lead screw 32.3. The first power component 32.1 can be a motor. When the bidirectional lead screw 32.3 rotates, the first connecting rod 33 and the second connecting rod 34 move the same distance, so the support platform 35 can always be kept in a horizontal state. At the same time, the bidirectional lead screw 32.3 has self-locking property. When power is cut off, the movable nut 32.2 will not move along the bidirectional lead screw 32.3, thereby ensuring that the weld detection component 5 will not collide with the welded part 10, which has good safety.

[0034] Due to the mechanical vibration of the welded component 10 during the transportation process, the welded component 10 will be displaced to a certain extent, making it difficult for the weld detection component 5 to align with the weld 100, thus affecting the accuracy of the weld 100 detection.

[0035] In this embodiment, the conveying unit 1 includes a linear drive mechanism 11 and a material conveying mechanism disposed on top of the linear drive mechanism 11 for adsorbing and fixing the welded part 10. The linear drive mechanism 11 can be a linear drive module, and the material conveying mechanism is a vacuum adsorption platform 12, capable of quickly fixing the welded part 10. Alternatively, it can be fixed by magnetic adsorption using a magnetic suction component. The linear drive mechanism 11 drives the material conveying mechanism to move along the conveying direction. In embodiments not shown, a screw mechanism, rack and pinion mechanism, or hydraulic cylinder, etc., can also be used, as long as they can drive the conveying mechanism to move along the conveying direction; no limitation is made here.

[0036] It is understood that the surface of the vacuum adsorption platform 12 is distributed with a number of negative pressure adsorption holes. The negative pressure adsorption holes are evacuated by a vacuum pumping device, thereby adsorbing and fixing the welded parts 10.

[0037] In embodiments not shown, the fastening mechanism can also be used, such as using a cylinder to press and fix the welded parts 10.

[0038] Combination Figure 3The second adjustment mechanism 4 includes a transmission belt 42 disposed at the bottom of the support platform 35, and a second power component 41 for driving the transmission belt 42 to rotate, wherein the second power component 41 may be a motor; a mounting plate 43 is disposed on the transmission belt 42, and the weld detection component 5 is connected to the mounting plate 43. When it is necessary to adjust the position of the weld detection component 5, the second power component 41 drives the transmission belt 42 to rotate, thereby driving the mounting plate 43 to move the weld detection component 5.

[0039] In some embodiments, the second adjustment mechanism is further provided with a distance detection component for detecting the distance between the weld detection component 5 and the weld 100. The distance detection component may be a distance sensor to detect the distance between the weld detection component 5 and the weld 100 in real time.

[0040] In this embodiment, a control device is also included, which is electrically connected to the visual inspection component 6, the adjustment unit 2, the weld inspection component 5, and the conveying unit 1, respectively. The control device is used to control the visual inspection component 6, the adjustment unit 2, the weld inspection component 5, and the conveying unit 1 to work together.

Claims

1. A laser weld seam inspection apparatus, characterized by: It includes a weld inspection component and a conveying unit, wherein the conveying unit is used to stably convey the welded parts along the conveying direction, and the weld inspection component is used to inspect the weld quality of the welded parts; An adjustment unit located at the top of the conveying unit; the adjustment unit includes a first adjustment mechanism and a second adjustment mechanism that can control the position of the weld detection component according to the weld position, wherein the first adjustment mechanism can adjust the distance between the weld detection component and the weld. The front end of the adjustment unit is equipped with a vision inspection component for detecting the weld seam trajectory of the welded parts.

2. The laser stitch weld detection apparatus of claim 1, wherein: The first adjustment mechanism includes a bracket, a first link and a second link, and a synchronous drive assembly that drives one end to move closer or further away from each other. A support platform is provided between the first link and the second link for placing the second adjustment mechanism.

3. The laser stitch weld detection apparatus of claim 2, wherein: The synchronous drive assembly includes a power component and a bidirectional lead screw, as well as a movable nut sleeved on the outside of the bidirectional lead screw and connecting the first connecting rod and the second connecting rod respectively. The power component is used to drive the bidirectional lead screw.

4. The laser stitch weld detection apparatus of claim 1, wherein: The conveying unit includes a linear drive mechanism and a vacuum adsorption platform located on top of the linear drive mechanism for adsorbing and fixing the welded parts. The linear drive mechanism is used to drive the vacuum adsorption platform to move along the conveying direction.

5. The laser stitch weld detection apparatus of claim 4, wherein: The vacuum adsorption platform fixes the welded parts by adsorption.

6. The laser stitch weld detection apparatus of claim 1, wherein: The second adjustment mechanism includes a transmission belt and a mounting plate, as well as a power component that drives the transmission belt to rotate. The mounting plate is connected to the transmission belt, and the weld detection component is connected to the mounting plate.

7. The laser stitch weld detection apparatus of claim 1, wherein: It also includes a control device, which is electrically connected to the vision inspection component, the adjustment unit, the weld inspection component, and the conveying unit, respectively.

8. The laser stitch weld detection apparatus of claim 1, wherein: The second adjustment mechanism is also provided with a distance detection component for detecting the distance between the weld detection component and the weld.

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