A multi-angle solder joint analysis and detection device for sheet metal parts

Abstract

The present invention discloses a multi-angle solder joint analysis and detection device for sheet metal parts, including a workbench, a detection component, and a fixing fixture. The fixing fixture is fixedly arranged at the upper end of the workbench. A driving device is fixedly arranged beside the fixing fixture at the upper end of the workbench. The driving device includes a driving box, and a sliding frame is slidably arranged above the driving box. Two groups of detection components are respectively slidably arranged at the upper and lower ends of the sliding frame. Each detection component is provided with a driving source and can move along the sliding groove. A CCD camera is rotatably arranged beside the detection component, which can perform appearance detection on the solder joints on the sheet metal parts.

Description

Technical Field

[0001] The present invention relates to the field of solder joint analysis of sheet metal parts, and particularly to a multi-angle solder joint analysis and detection device for sheet metal parts. Background Art

[0002] When performing multi-angle solder joint analysis and detection on sheet metal parts, in order to ensure their subsequent assembly or normal use, the welding deformation is detected. However, for products where a cylindrical sheet metal part is welded to an annular plate-shaped sheet metal part, due to the influence of welding deformation and welding technology, the perpendicularity between the cylindrical sheet metal part and the annular plate-shaped sheet metal part cannot be guaranteed 100%. And when the existing fixture clamps and detects it, it cannot automatically align the cylindrical sheet metal part. When performing multi-angle solder joint welding deformation detection, the inability to automatically align will directly affect the detection efficiency.

[0003] Therefore, it is necessary to provide a multi-angle solder joint analysis and detection device for sheet metal parts to solve the problems mentioned in the above background art. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: A multi-angle solder joint analysis and detection device for sheet metal parts, including a workbench, a detection component, and a fixed fixture. The fixed fixture is fixedly arranged at the upper end of the workbench. A driving device is fixedly arranged beside the fixed fixture at the upper end of the workbench. The driving device includes a driving box. A sliding frame is slidably arranged above the driving box. Two groups of the detection components are respectively slidably arranged at the upper and lower ends of the sliding frame. Each detection component is provided with a driving source and can move along the sliding frame. A CCD camera is rotatably arranged beside the detection component and can perform appearance detection on the solder joints on the sheet metal part.

[0005] As a preferred technical solution of the present invention, each detection component includes a sliding seat. A detection rod is perpendicularly fixed to the axis of the sheet metal part on the sliding seat. The detection rod is an elastic telescopic rod. A detection ball is rotatably arranged at the end of the detection rod.

[0006] As a preferred technical solution of the present invention, the fixed fixture includes a limiting disk rotatably arranged on the workbench. An external driving motor for driving the limiting disk to rotate is fixedly arranged at the lower end of the workbench. A plurality of first guiding grooves are circumferentially and equally spaced along the axis at the upper end of the limiting disk. A driving disk is rotatably arranged inside the limiting disk. A plurality of second guiding grooves are circumferentially and equally spaced along the axis at the upper end of the driving disk. A slider is slidably arranged in each second guiding groove. A fixing rod is fixedly arranged at the upper end of the slider. A limiting member is sleeved outside the fixing rod. The outer peripheral surface of the limiting member is a circular structure. The limiting member is slidably and rotatably matched with the fixing rod.

[0007] Among them, when the slider is located on one side close to the axis of the limit disk, the included angle between the first guide groove and the second guide groove is 45° ± 2°. By rotating the driving disk, the slider and the fixed rod can be driven to slide along the first guide groove.

[0008] As a preferred technical solution of the present invention, a pressure sensing unit is attached to the outer peripheral surface of the fixed rod.

[0009] As a preferred technical solution of the present invention, the outer peripheral surface of the limiting member can also be a polygonal structure, which can support and expand different sheet metal parts with a regular polygon cross-section.

[0010] As a preferred technical solution of the present invention, a strong magnetic coil is arranged inside the limit disk.

[0011] As a preferred technical solution of the present invention, a spring is arranged at the lower end of the limiting member. The spring is sleeved on the fixed rod, and the spring elastically supports between the limiting member and the slider.

[0012] Compared with the prior art, the present invention provides a multi-angle solder joint analysis and detection device for sheet metal parts, which has the following beneficial effects:

[0013] In the present invention, two sets of detection components are used to respectively detect the pressure at one end close to the solder joint and the end far from the solder joint on the outer side of the cylindrical sheet metal part, and judge the magnitude of its deformation according to the pressure difference between the two. At the same time, a limiting member and a strong magnetic coil that can elastically move longitudinally are set. After the limiting member finishes aligning the sheet metal part, the suspended part between the sheet metal part and the limit disk is fitted to improve the detection accuracy and avoid the problem of difficult alignment after the cylindrical sheet metal part is welded and deformed.

[0014] Furthermore, according to sheet metal parts with different regular polygon cross-sections, different shapes and numbers of limiting members are replaced, improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a multi-angle solder joint analysis and detection device for sheet metal parts;

[0016] Figure 2 It is a schematic diagram of the structure of the fixed fixture of a multi-angle solder joint analysis and detection device for sheet metal parts;

[0017] Figure 3 It is a schematic top view of the fixed fixture of a multi-angle solder joint analysis and detection device for sheet metal parts;

[0018] Figure 4 It is a schematic top view of the clamping of other types of sheet metal parts by a multi-angle solder joint analysis and detection device for sheet metal parts;

[0019] In the figure: 1, workbench; 2, fixed fixture; 21, external drive motor; 22, drive disk; 23, limit disk; 24, slider; 25, fixed rod; 26, limiting member; 27, spring; 28, first guide groove; 29, second guide groove; 3, drive device; 31, drive box; 32, carriage; 4, detection assembly; 41, sliding seat; 42, measuring rod; 43, detection ball; 5, CCD camera; 6, sheet metal part. Detailed implementation manner

[0020] Please refer to Figures 1-4 , the present invention provides a multi-angle solder joint analysis and detection device for a sheet metal part, including:

[0021] Workbench 1, detection assembly 4 and fixed fixture 2, the fixed fixture 2 is fixedly arranged at the upper end of the workbench 1, a drive device 3 is fixedly arranged beside the fixed fixture 2 at the upper end of the workbench 1, the drive device 3 includes a drive box 31, a carriage 32 is slidably arranged above the drive box 31, two groups of the detection assemblies 4 are respectively slidably arranged at the upper and lower ends of the carriage 32, each detection assembly 4 is provided with a drive source and can move along the carriage 32, and a CCD camera 5 is rotatably arranged beside the detection assembly 4, which can perform appearance detection on the solder joints on the sheet metal part 6.

[0022] Among them, first place the welded sheet metal part 6 on the fixed fixture 2, then start the fixture to automatically align and clamp the sheet metal part 6, and then use two groups of detection assemblies 4 to respectively perform pressure detection on one end of the sheet metal part close to the solder joint and the end far from the solder joint on the outer side of the sheet metal part, and judge the magnitude of the deformation amount according to the pressure difference between the two, and use the CCD camera 5 to detect the appearance defects of the solder joints.

[0023] In this embodiment, each detection assembly 4 includes a sliding seat 41, a measuring rod 42 is vertically fixed on the sliding seat 41 along the axis of the sheet metal part 6, the measuring rod 42 is an elastic telescopic rod, and a detection ball 43 is rotatably arranged at the end of the measuring rod 42.

[0024] It should be explained that the initial elongation amounts of the two groups of measuring rods 42 are the same, a pressure detection device is connected to the rear end of the measuring rod 42, the pressure detection device can output the detected pressure value to a computer, and the computer compares and analyzes the pressure values measured at both ends with the pressure value of the undeformed state to identify whether the deformation is within the qualified range. At the same time, the sliding seat 41 can be controlled to move to detect different positions of the sheet metal part 6, and multiple groups of data are obtained for comparison and analysis.

[0025] In this embodiment, the fixed fixture 2 includes a limit disk 23 rotatably arranged on the workbench 1. An external drive motor 21 for driving the limit disk 23 to rotate is fixedly arranged at the lower end of the workbench 1. A plurality of first guide grooves 28 are circumferentially and equiangularly spaced along the axis at the upper end of the limit disk 23. A drive disk 22 is rotatably arranged inside the limit disk 23. A plurality of second guide grooves 29 are circumferentially and equiangularly spaced along the axis at the upper end of the drive disk 22. A slider 24 is slidably arranged in each of the second guide grooves 29. A fixed rod 25 is fixedly arranged at the upper end of the slider 24. A limiting member 26 is sleeved outside the fixed rod 25. The outer peripheral surface of the limiting member 26 is of a circular structure. The limiting member 26 is in sliding and rotational fit with the fixed rod 25;

[0026] Wherein, when the slider 24 is located on the side close to the axis of the limit disk 23, the included angle between the first guide groove 28 and the second guide groove 29 is 45°±2°. By rotating the drive disk 22, the slider 24 and the fixed rod 25 can be driven to slide along the first guide groove 28.

[0027] It should be explained that the limiting member 26 is made of an elastic material. As the drive disk 22 rotates, the range of change of the inclination angle between the first guide groove 28 and the second guide groove 29 is 10°-45°. When the drive disk 22 rotates, all the limiting members 26 slide outwards along the corresponding first guide grooves 28 to support and expand the inner wall of the sheet metal part 6. An inner drive motor is arranged at the lower end of the drive disk 22, which can drive the drive disk 22 to rotate to control the fixed fixture 2 to clamp the sheet metal part 6.

[0028] In this embodiment, a pressure sensing unit is attached to the outer peripheral surface of the fixed rod 25.

[0029] That is to say, the operator can select an appropriate clamping force according to the anti-deformation ability of the sheet metal part 6 to avoid excessive clamping force, which may cause the sheet metal part 6 to deform and affect the accuracy of detection.

[0030] In this embodiment, the outer peripheral surface of the limiting member 26 can also be of a polygonal structure, which can support and expand different sheet metal parts 6 with a regular polygon cross-section.

[0031] In this embodiment, the operator can select the same number of limiting members 26 according to the number of sides of the inner hole cross-section of the sheet metal part 6 to support and limit the corners thereof. The number of limiting members is increased or decreased according to the number of sides of the cross-section of the sheet metal part. As the drive disk 22 rotates, the limiting members contact the inner wall of the sheet metal part 26 and perform adaptive self-rotation, or push the sheet metal part to rotate to automatically align the sheet metal part 26, eliminating the need for manual alignment after clamping.

[0032] In this embodiment, a strong magnetic coil is arranged inside the limit disc 23. By controlling the energization and de-energization of the strong magnetic coil, the limit disc 23 adsorbs and releases the sheet metal part 6.

[0033] In this embodiment, a spring 27 is arranged at the lower end of the limiting member 26. The spring 27 is sleeved on the fixed rod 25, and the spring 27 elastically supports between the limiting member 26 and the slider 24.

[0034] It should be noted that when the sheet metal part 6 is supported and expanded, due to factors such as the size, quantity, density of the welded solder joints and welding deformation, the sheet metal part 6 may be in a non-vertical state after welding (caused by welding deformation and welding technology). Therefore, after the limiting member 26 supports and expands its inner wall, it may cause the lower end face of one side of the sheet metal part 6 to be in a suspended state after the inner wall of the sheet metal part is fully positioned. At this time, the strong magnetic coil is energized to adsorb the lower end face of the sheet metal part 6, so that the limiting member 26 on the suspended side of the sheet metal part 6 slides downward to compress the spring 27, straightening the sheet metal part 6 and making the lower end face of the sheet metal part 6 fully fit with the upper end of the limit disc 23, ensuring the detection accuracy of the welding deformation of the sheet metal part 6.

[0035] During specific implementation, the welded cylindrical sheet metal part is sleeved on the fixed fixture with the positioning surface facing down, and then the inner drive motor is started to control the limiting member to move along the first guiding groove to support and expand the inner hole of the sheet metal part. After the expansion is in place, the strong magnetic coil is energized to generate a suction force on the sheet metal part, making the positioning surface of the connecting part fully fit with the upper end of the limit disc. Then, the two groups of detection components are controlled to move to one side close to the solder joint and the other side far from the solder joint respectively, and then the outer drive motor is started to control the limit disc to rotate to perform pressure detection on the outer peripheral surface of the sheet metal part. According to the difference in the pressure values, the amount of deformation of the outer peripheral surface of the sheet metal part is judged, reducing the error of the analysis and detection of the welding deformation of the multi-angle solder joints of the sheet metal part.

[0036] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A multi-angle solder joint analysis and detection device for sheet metal parts, comprising a workbench (1), a detection component (4) and a fixing fixture (2), characterized in that: The fixed fixture (2) is fixedly arranged at the upper end of the workbench (1). A driving device (3) is fixedly arranged beside the fixed fixture (2) at the upper end of the workbench (1). The driving device (3) includes a driving box (31). A sliding carriage (32) is slidably arranged above the driving box (31). Two groups of detection components (4) are arranged and are respectively slidably arranged at the upper and lower ends of the sliding carriage (32). Each detection component (4) is equipped with a driving source and can move along the sliding carriage (32). A CCD camera (5) is rotatably arranged beside the detection component (4) to perform appearance detection on the solder joints on the sheet metal part (6). The fixed fixture (2) includes a limiting disk (23) rotatably arranged on the workbench (1). An external driving motor (21) for driving the limiting disk (23) to rotate is fixedly arranged at the lower end of the workbench (1). A plurality of first guiding grooves (28) are circumferentially and equally angularly spaced along the axis at the upper end of the limiting disk (23). A driving disk (22) is rotatably arranged inside the limiting disk (23). A plurality of second guiding grooves (29) are circumferentially and equally angularly spaced along the axis at the upper end of the driving disk (22). A slider (24) is slidably arranged in each second guiding groove (29). A fixed rod (25) is fixedly arranged at the upper end of the slider (24). A limiting member (26) is sleeved outside the fixed rod (25). The outer peripheral surface of the limiting member (26) is of a circular structure, and the limiting member (26) is in sliding and rotational cooperation with the fixed rod (25). When the slider (24) is located on the side close to the axis of the limiting disk (23), the included angle between the first guiding groove (28) and the second guiding groove (29) is 45° ± 2°. By rotating the driving disk (22), the slider (24) and the fixed rod (25) can be driven to slide along the first guiding groove (28). The outer peripheral surface of the limiting member (26) can also be of a polygonal structure, which can support and expand different sheet metal parts (6) with a regular polygon cross-section. A spring (27) is arranged at the lower end of the limiting member (26). The spring (27) is sleeved on the fixed rod (25), and the spring (27) elastically supports between the limiting member (26) and the slider (24). Each detection component (4) includes a sliding seat (41). A detection rod (42) perpendicular to the axis of the sheet metal part (6) is fixedly arranged on the sliding seat (41). The detection rod (42) is an elastic telescopic rod, and a detection ball (43) is rotatably arranged at the end of the detection rod (42).

2. The multi-angle solder joint analysis and detection device for sheet metal parts according to claim 1, characterized in that: A pressure sensing unit is attached to the outer peripheral surface of the fixed rod (25).

3. The multi-angle solder joint analysis and detection device for sheet metal parts according to claim 1, characterized in that: A strong magnetic coil is arranged inside the limiting disk (23).

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