Workpiece detection device

Abstract

The utility model relates to the technical field of workpiece detection, in particular to a workpiece detection device which comprises a rack and a detection assembly, a workbench is fixedly arranged on the rack, the detection assembly is movably arranged on the workbench, the workpiece detection device further comprises a moving assembly, the moving assembly comprises a sliding seat, a positioning frame and a backlight plate, the sliding seat is movably arranged on the workbench, and the backlight plate is arranged on the positioning frame. The positioning frame and the backlight plate are fixedly arranged on the sliding seat, a groove and an opening which are communicated are formed in the positioning frame, the groove is located above the opening, the size of the groove is larger than that of the opening, the detection assembly is located above the groove, and the backlight plate is located below the opening. According to the workpiece detection device provided by the utility model, the detection camera and the telecentric lens are used for shooting, and meanwhile, the backlight plate acts, so that the detection camera and the telecentric lens can clearly and accurately shoot details of a workpiece, and the detection accuracy is high; the workpiece is loaded and unloaded by people through the sliding seat and the positioning frame more conveniently, the loading and unloading speed is increased, and the detection efficiency of the workpiece is further improved.

Description

Technical Field

[0001] This utility model relates to the field of workpiece inspection technology, and specifically to a workpiece inspection device. Background Technology

[0002] With the continuous advancement and development of workpiece inspection, vision inspection devices are being used in an increasing number of fields. However, existing vision inspection devices require manual loading and unloading of workpieces, which necessitates avoiding the inspection camera and other components, resulting in slow loading and unloading speeds and consequently reducing inspection efficiency. Therefore, there is an urgent need for a workpiece inspection device to solve these problems. Utility Model Content

[0003] To address the technical problem of slow workpiece loading and unloading speeds caused by manual handling in existing visual inspection devices, this invention provides a workpiece inspection device. A detection camera and telecentric lens capture images, while a backlight panel ensures clear and accurate imaging of workpiece details, resulting in high inspection precision. Workpiece loading and unloading are performed by a human using a sliding block and positioning frame, making the process more convenient and faster, thereby improving workpiece inspection efficiency.

[0004] This utility model provides a workpiece inspection device, including a frame and an inspection component. A worktable is fixedly mounted on the frame, and the inspection component is movably mounted on the worktable. The device also includes a moving component, which includes a slide, a positioning frame, and a backlight plate. The slide is movably mounted on the worktable, and the positioning frame and the backlight plate are fixedly mounted on the slide. The positioning frame has a communicating groove and an opening. The groove is located above the opening, and the size of the groove is larger than the size of the opening. The inspection component is located above the groove, and the backlight plate is located below the opening.

[0005] Furthermore, a screw is rotatably mounted on the worktable, a handle is fixedly mounted at the end of the screw, and a nut seat is threaded onto the middle of the screw. A sliding groove is fixedly mounted on the worktable, and the nut seat is located within the sliding groove and can slide. The nut seat is fixedly connected to the slide block. When a person rotates the handle, the screw rotates, causing the nut seat to slide back and forth within the sliding groove, which in turn causes the slide block to slide back and forth.

[0006] Furthermore, the positioning frame is inverted U-shaped, and the groove and opening are provided on the top of the positioning frame; a T-shaped positioning block is detachably provided on the top of the positioning frame, the protrusion of the T-shaped positioning block is located above the groove, and a flexible pad is fixedly provided on the protrusion of the T-shaped positioning block.

[0007] Furthermore, both the positioning frame and the T-shaped positioning block are provided with threaded holes, and the threaded holes on the positioning frame and the T-shaped positioning block are fixedly connected by bolts. The positioning frame and the T-shaped positioning block can be disassembled and connected through the threaded holes and bolts.

[0008] Furthermore, the detection assembly includes a displacement sensor, a detection camera, and a telecentric lens fixedly connected to the lower end of the detection camera. A support frame is movably mounted on the worktable, and a first linear module is mounted on the support frame. A first mounting plate is fixedly mounted on the first slide of the first linear module. The displacement sensor is fixedly mounted on the first mounting plate, and a second mounting plate is movably mounted on the first mounting plate. The detection camera and the displacement sensor are fixedly mounted on the second mounting plate, and the displacement sensor is located to the side of the telecentric lens.

[0009] Furthermore, a corresponding slide rail and a second linear module are fixedly mounted on the worktable. A slider is slidably mounted within the slide rail. Both ends of the support frame are fixedly connected to the slider and the second slide table of the second linear module, respectively. A third linear module is fixedly mounted on the first mounting plate, and the third slide table of the third linear module is fixedly connected to the second mounting plate. When the second linear module is activated, it drives the second slide table and the support frame to slide back and forth, while the slider slides back and forth within the slide rail. When the third linear module is activated, it drives the third slide table and the second mounting plate to slide up and down. The up and down movement of the second mounting plate, in turn, drives the detection camera and the telecentric lens to slide up and down.

[0010] Furthermore, a first connecting plate is fixedly mounted on the displacement sensor and is fixedly connected to a first mounting plate. A connecting block is fixedly mounted on the detection camera, and a second connecting plate is fixedly mounted on the telecentric lens. The connecting block and the second connecting plate are connected to the second mounting plate. The first connecting plate is fixed to the first mounting plate, and the detection camera and the telecentric lens are fixed to the second mounting plate.

[0011] Furthermore, multiple support columns are evenly fixedly arranged on the frame, and each position of the worktable corresponding to a support column is provided with an embedded groove, with the top of the support column engaging the embedded groove. With the top of the support column engaging the embedded groove, the worktable is fixed to the frame and remains stable.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model's workpiece inspection device uses a detection camera and telecentric lens for imaging, while a backlight panel further enhances the clarity and accuracy of capturing workpiece details, resulting in high inspection precision. Workpieces are loaded and unloaded manually via a sliding block and positioning frame, making loading and unloading more convenient and faster, thereby improving workpiece inspection efficiency. Attached Figure Description

[0014] Figure 1 This is a top view of a workpiece inspection device according to this utility model;

[0015] Figure 2 This is a utility model Figure 1 Enlarged structural diagram of A in the middle;

[0016] Figure 3 This is a front view structural schematic diagram of the workpiece inspection device of this utility model;

[0017] Figure 4 This is a utility model Figure 3 Enlarged structural diagram of B in the middle;

[0018] Figure 5 This is a schematic diagram of the structure of the workpiece of this utility model when it is stuck on the positioning frame;

[0019] The numbers in the attached diagram are:

[0020] 1. Frame; 11. Worktable; 12. Screw; 13. Handle; 14. Nut seat; 15. Slide groove; 16. Slide rail; 17. Slider; 18. Support column; 2. Detection assembly; 21. Displacement sensor; 211. First connecting plate; 22. Detection camera; 221. Connecting block; 23. Telecentric lens; 231. Second connecting plate; 3. Moving assembly; 31. Slide; 32. Positioning frame; 321. Groove; 322. Opening; 323. T-shaped positioning block; 33. Backlight panel; 4. Support frame; 5. First linear module; 51. First slide; 6. First mounting plate; 7. Second mounting plate; 8. Second linear module; 81. Second slide; 9. Third linear module; 91. Third slide. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 5As shown, a workpiece inspection device includes a frame 1 and an inspection component 2. A worktable 11 is fixedly mounted on the frame 1, and the inspection component 2 is movably mounted on the worktable 11. The device also includes a moving component 3, which comprises a slide 31, a positioning frame 32, and a backlight plate 33. The slide 31 is movably mounted on the worktable 11, and the positioning frame 32 and backlight plate 33 are fixedly mounted on the slide 31. The positioning frame 32 has a communicating groove 321 and an opening 322. The groove 321 is located above the opening 322, and the size of the groove 321 is larger than the size of the opening 322. The size of the groove 321 is larger than the size of the workpiece to ensure that the workpiece can be fixed in the groove 321. The height of the groove 321 is less than the thickness of the workpiece to facilitate removal of the workpiece from the groove 321. The inspection component 2 is located above the groove 321, and the backlight plate 33 is located below the opening 322. The inspection component 2 is electrically connected to an external computer.

[0023] The workpiece is a production mold plate for photovoltaic modules. The edges of the workpiece are made of aluminum, while the center is made of transparent material. The transparent material in the center of the workpiece needs to be inspected.

[0024] The inspection process of the workpiece inspection device: The slide block 31 slides backward, driving the positioning frame 32 and the backlight plate 33 to the edge of the worktable 11. The lower part of the workpiece is manually placed into the groove 321, and the workpiece is fixed on the positioning frame 32. The transparent material of the workpiece faces the opening 322 and is located above the backlight plate 33 (there is a gap between the workpiece and the backlight plate 33 to avoid scratching the backlight plate 33). The slide block 31 then slides forward, driving the positioning frame 32 and the backlight plate 33 to the center of the worktable 11, and the workpiece is loaded. The inspection component 2 moves above the transparent material of the workpiece (once the position of the inspection component 2 is determined, it is generally not adjusted in subsequent inspection processes). The inspection component 2 inspects the transparent material of the workpiece. During inspection, the backlight plate 33 ensures that the inspection component 2 can clearly and accurately capture the details of the transparent material of the workpiece, resulting in high inspection accuracy. After the inspection is completed, the slide block 31 slides backward, moving the positioning frame 32 and the backlight plate 33 to the edge of the worktable 11. The workpiece is then manually removed from the groove 321, and the workpiece is unloaded. The above process is repeated to complete the inspection of all workpieces. The loading and unloading of workpieces avoids the location of the inspection component 2, making workpiece loading and unloading more convenient.

[0025] Generally, the detection component 2 then transmits the detection information to an external computer, which performs defect detection and defect classification and grading on the detection information, ultimately achieving the grading of the workpiece and determining whether the workpiece meets the quality requirements.

[0026] In this embodiment of the workpiece inspection device, a person can load and unload workpieces through the slide 31 and the positioning frame 32, which is more convenient, speeds up the loading and unloading process, and thus improves the workpiece inspection efficiency.

[0027] In one possible implementation, a screw 12 is rotatably mounted on the worktable 11. Preferably, two bearing seats are arranged opposite each other on the worktable 11. The two ends of the screw 12 pass through the bearings in the two bearing seats and can rotate. A handle 13 is fixedly mounted on the end of the screw 12, and a nut seat 14 is threadedly mounted on the middle of the screw 12. A slide groove 15 is fixedly mounted on the worktable 11, and the nut seat 14 is located in the slide groove 15 and can slide back and forth. The nut seat 14 is fixedly connected to the slide block 31. When a person rotates the handle 13, the screw 12 rotates, and the nut seat 14 slides back and forth in the slide groove 15, thereby causing the slide block 31 to slide back and forth.

[0028] In one possible implementation, the positioning frame 32 is inverted U-shaped, with the groove 321 and opening 322 located on the top of the positioning frame 32. A T-shaped positioning block 323 is detachably mounted on the top of the positioning frame 32, with the protrusion of the T-shaped positioning block 323 located above the groove 321. A flexible pad is fixedly mounted on the protrusion of the T-shaped positioning block 323. The lower part of the workpiece is manually inserted into the groove 321, with the transparent material of the workpiece facing the opening 322 and located above the backlight panel 33. The T-shaped positioning block 323 is manually fixed onto the positioning frame 32. The flexible pad on the protrusion contacts the edge of the workpiece and restricts its movement. Because each workpiece has slight thickness variations, the flexible pad ensures that the workpiece is fixed on the positioning frame 32 while preventing scratches. After the inspection is completed, the T-shaped positioning block 323 is removed from the positioning frame 32, and the workpiece is manually removed from the groove 321.

[0029] In one possible implementation, both the positioning frame 32 and the T-shaped positioning block 323 are provided with threaded holes, and the threaded holes on the positioning frame 32 and the T-shaped positioning block 323 are fixedly connected by bolts. The positioning frame 32 and the T-shaped positioning block 323 can be disassembled and connected through the threaded holes and bolts.

[0030] In one possible implementation, the detection component 2 includes a displacement sensor 21, a detection camera 22, and a telecentric lens 23 fixedly connected to the lower end of the detection camera 22. A support frame 4 is movably mounted on the worktable 11, and a first linear module 5 is mounted on the support frame 4. A first mounting plate 6 is fixedly mounted on the first slide 51 of the first linear module 5. The displacement sensor 21 is fixedly mounted on the first mounting plate 6, and a second mounting plate 7 is movably mounted on the first mounting plate 6. The detection camera 22 and the displacement sensor 21 are fixedly mounted on the second mounting plate 7, and the displacement sensor 21 is located to the side of the telecentric lens 23. The displacement sensor 21 is a laser sensor. The structure and movement of the first linear module 5 are existing technologies and will not be described in detail here. It should be noted that after the first linear module 5 is started, it can drive its first slide 51 to slide. The movement of the support frame 4 can drive the first linear module 5, the first mounting plate 6, the second mounting plate 7, the displacement sensor 21, the detection camera 22, and the telecentric lens 23 to slide back and forth, thereby achieving front-to-back position adjustment. When the first linear module 5 is activated, it can drive the first slide table 51, the first mounting plate 6, the second mounting plate 7, the displacement sensor 21, the detection camera 22, and the telecentric lens 23 to slide left and right, thereby adjusting their left and right positions. The second mounting plate 7 moves on the first mounting plate 6, thereby driving the detection camera 22 and the telecentric lens 23 to slide up and down, thereby adjusting their height positions.

[0031] Adjust the positions of the detection camera 22, telecentric lens 23 and displacement sensor 21 as needed. Generally, after the front-back and left-right positions of the detection camera 22, telecentric lens 23 and displacement sensor 21 are determined (the detection camera 22, telecentric lens 23 and displacement sensor 21 are located at the center of the worktable 11), in actual detection, only the height position of the detection camera 22 and telecentric lens 23 needs to be adjusted accordingly.

[0032] Specifically, the workpiece is fixed on the positioning frame 32 and located at the center of the worktable 11. The transparent material of the workpiece faces the opening 322 and is positioned above the backlight panel 33. The displacement sensor 21 is aligned with the edge of the workpiece, while the detection camera 22 and telecentric lens 23 are aligned with the transparent material of the workpiece. The displacement sensor 21 detects its distance from the workpiece. Because the thickness of each workpiece has slight variations, the detection camera 22 and telecentric lens 23 are adjusted accordingly based on the distance from the displacement sensor 21 to the workpiece. After the height of the detection camera 22 and telecentric lens 23 is determined, they take pictures. Simultaneously, the backlight panel 33 ensures that the detection camera 22 and telecentric lens 23 can clearly and accurately capture the details of the transparent material of the workpiece. The detection camera 22 is electrically connected to an external computer, and it subsequently transmits the detection information to the external computer.

[0033] In one possible implementation, the workbench 11 is fixedly equipped with opposing slide rails 16 and a second linear module 8. A slider 17 is slidably disposed within the slide rails 16. The two ends of the support frame 4 are fixedly connected to the slider 17 and the second slide table 81 of the second linear module 8, respectively. A third linear module 9 is fixedly disposed on the first mounting plate 6. The third slide table 91 of the third linear module 9 is fixedly connected to the second mounting plate 7 and can be driven to slide up and down. The structure and movement of the second linear module 8 and the third linear module 9 are existing technologies and will not be described in detail here. It should be noted that after the second linear module 8 is activated, it can drive its own second slide table 81 to slide; after the third linear module 9 is activated, it can drive its own third slide table 91 to slide.

[0034] When the second linear module 8 is activated, it drives the second slide 81 and the support frame 4 to slide back and forth, while the slider 17 slides back and forth within the slide rail 16. When the third linear module 9 is activated, it drives the third slide 91 and the second mounting plate 7 to slide up and down. The up and down movement of the second mounting plate 7, in turn, drives the detection camera 22 and the telecentric lens 23 to slide up and down to adjust their height positions.

[0035] In one possible implementation, a first connecting plate 211 is fixedly mounted on the displacement sensor 21, and the first connecting plate 211 is fixedly connected to the first mounting plate 6. The first connecting plate 211 is L-shaped. A connecting block 221 is fixedly mounted on the detection camera 22 by screws and nuts. A second connecting plate 231 is fixedly mounted on the lens barrel of the telecentric lens 23. Preferably, the second connecting plate 231 has a through hole, and the lens barrel of the telecentric lens 23 is engaged in the through hole. The connecting block 221 and the second connecting plate 231 are fixedly connected to the second mounting plate 7. With the connecting block 221 and the second connecting plate 231 connected to the second mounting plate 7, the detection camera 22 and the telecentric lens 23 are fixed to the second mounting plate 7.

[0036] In one possible implementation, a plurality of support columns 18 are uniformly fixedly arranged on the top of the frame 1, and an embedded groove is provided at the position corresponding to the support columns 18 on the worktable 11. The top of the support column 18 is inserted into the embedded groove. With the top of the support column 18 inserted into the embedded groove, the worktable 11 is fixed on the frame 1 and remains stable.

[0037] The inspection process of the workpiece inspection device: A person rotates handle 13 clockwise, causing screw 12 to rotate clockwise. Nut seat 14 slides backward within slide groove 15, causing slide block 31 to slide backward. Positioning frame 32 and backlight plate 33 move to the edge of worktable 11. The person manually places the lower part of the workpiece into groove 321. T-shaped positioning block 323 is fixed on positioning frame 32. The flexible pad of the protrusion contacts the edge of the workpiece and restricts its movement. The transparent material of the workpiece faces opening 322 and is located above backlight plate 33. The person rotates handle 13 counterclockwise, causing screw 12 to rotate counterclockwise. Nut seat 14 slides forward within slide groove 15, causing slide block 31 to slide forward. Positioning frame 32 and backlight plate 33 move to the center of worktable 11, thus loading the workpiece. The first linear module 5 and the second linear module 8 are activated, moving the detection camera 22, the telecentric lens 23, and the displacement sensor 21 to the center position of the worktable 11. The displacement sensor 21 detects its distance from the workpiece. In actual detection, due to slight deviations in the thickness of each workpiece, the third linear module 9 is activated based on the distance from the displacement sensor 21 to the workpiece, and the detection camera 22 and the telecentric lens 23 are adjusted accordingly. After the height of the detection camera 22 and the telecentric lens 23 is determined, the detection camera 22 and the telecentric lens 23 take pictures. At the same time, the backlight 33 is activated, enabling the detection camera 22 and the telecentric lens 23 to clearly and accurately capture the details of the transparent material of the workpiece, resulting in high detection accuracy.

[0038] The embodiments described above are merely preferred embodiments of this utility model and are only used to explain this utility model. They are not intended to limit the scope of implementation of this utility model. For those skilled in the art, other implementation methods can be easily made by substitution or modification based on the technical content disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A workpiece inspection device, comprising a frame (1) and an inspection component (2), wherein a worktable (11) is fixedly disposed on the frame (1), and the inspection component (2) is movably disposed on the worktable (11), characterized in that, It also includes a moving component (3), which includes a slide (31), a positioning frame (32) and a backlight plate (33). The slide (31) is movably mounted on the worktable (11). The positioning frame (32) and the backlight plate (33) are fixedly mounted on the slide (31). The positioning frame (32) is provided with a groove (321) and an opening (322) that are connected. The groove (321) is located above the opening (322) and the size of the groove (321) is larger than the size of the opening (322). The detection component (2) is located above the groove (321) and the backlight plate (33) is located below the opening (322).

2. The workpiece inspection device according to claim 1, characterized in that, A screw (12) is rotatably mounted on the workbench (11). A handle (13) is fixedly mounted at the end of the screw (12). A nut seat (14) is threadedly mounted in the middle of the screw (12). A slide groove (15) is fixedly mounted on the workbench (11). The nut seat (14) is located in the slide groove (15) and can slide. The nut seat (14) is fixedly connected to the slide block (31).

3. The workpiece inspection device according to claim 1, characterized in that, The positioning frame (32) is inverted U-shaped, and the groove (321) and opening (322) are set on the top of the positioning frame (32); a T-shaped positioning block (323) is detachably provided on the top of the positioning frame (32), the protrusion of the T-shaped positioning block (323) is located above the groove (321), and a flexible pad is fixedly provided on the protrusion of the T-shaped positioning block (323).

4. The workpiece inspection device according to claim 3, characterized in that, Both the positioning frame (32) and the T-shaped positioning block (323) are provided with threaded holes, and the threaded holes on the positioning frame (32) and the T-shaped positioning block (323) are fixedly connected by bolts.

5. The workpiece inspection device according to claim 1, characterized in that, The detection component (2) includes a displacement sensor (21), a detection camera (22), and a telecentric lens (23) fixedly connected to the lower end of the detection camera (22). A support frame (4) is movably arranged on the worktable (11). A first linear module (5) is arranged on the support frame (4). A first mounting plate (6) is fixedly arranged on the first slide (51) of the first linear module (5). The displacement sensor (21) is fixedly arranged on the first mounting plate (6). A second mounting plate (7) is movably arranged on the first mounting plate (6). The detection camera (22) and the displacement sensor (21) are fixedly arranged on the second mounting plate (7). The displacement sensor (21) is located to the side of the telecentric lens (23).

6. The workpiece inspection device according to claim 5, characterized in that, The workbench (11) is fixedly provided with opposing slide rails (16) and a second linear module (8). A slider (17) is slidably provided in the slide rail (16). The two ends of the support frame (4) are fixedly connected to the slider (17) and the second slide table (81) of the second linear module (8), respectively. A third linear module (9) is fixedly provided on the first mounting plate (6). The third slide table (91) of the third linear module (9) is fixedly connected to the second mounting plate (7).

7. The workpiece inspection device according to claim 5, characterized in that, A first connecting plate (211) is fixedly installed on the displacement sensor (21), and the first connecting plate (211) is fixedly connected to the first mounting plate (6). A connecting block (221) is fixedly installed on the detection camera (22), and a second connecting plate (231) is fixedly installed on the telecentric lens (23). The connecting block (221) and the second connecting plate (231) are fixedly connected to the second mounting plate (7).

8. The workpiece inspection device according to claim 1, characterized in that, Multiple support columns (18) are evenly fixed on the frame (1). The workbench (11) is provided with an embedded groove at the position corresponding to the support column (18). The top of the support column (18) is inserted into the embedded groove.

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