Projection detection device

Abstract

The utility model belongs to the technical field of image detection equipment, and particularly provides a projection detection device which comprises an imaging mechanism and a detection mechanism, the imaging mechanism comprises a first fixing frame and a projection plate arranged on the first fixing frame, and the projection plate can rotate around a first axis relative to the first fixing frame. The detection mechanism comprises a lifting assembly and a pattern detection unit arranged on the lifting assembly, the lifting assembly can drive the pattern detection unit to move in the vertical direction, the pattern detection unit can rotate around a second axis relative to the lifting assembly, and the second axis and the first axis are parallel and are horizontally arranged. The projection angle of the projection equipment relative to the projection plate can be adjusted by rotating the projection plate around the first axis, meanwhile, the height of the pattern detection unit is adjusted through the lifting assembly, the pattern detection unit is made to rotate around the second axis, the pattern detection unit is kept right opposite to the projection plate, and therefore multi-angle detection can be achieved; and the detection requirements of different application scenes are met.

Description

Technical Field

[0001] This application belongs to the field of image detection equipment technology, and specifically relates to a projection detection device. Background Technology

[0002] The PGU, also known as the optical engine, is a core component of a vehicle head-up display system, primarily responsible for generating patterns. During the production of the optical engine, the generated pattern is typically projected onto a projection board, and then pattern inspection equipment is used to detect the pattern on the projection board. However, the angles of the projection board and the pattern inspection equipment are often fixed and cannot be adjusted, thus failing to meet the inspection requirements of different application scenarios. Utility Model Content

[0003] The purpose of this application is to provide a projection inspection device that solves the technical problem that the angle of the projection board and pattern inspection equipment in the prior art is fixed and cannot be adjusted, thus failing to meet the inspection needs of different application scenarios.

[0004] To achieve the above objectives, the technical solution adopted in this application is: a projection detection device, including an imaging mechanism and a detection mechanism. The imaging mechanism includes a first fixed frame and a projection plate disposed on the first fixed frame. The projection plate is rotatable relative to the first fixed frame around a first axis. The detection mechanism includes a lifting assembly and a pattern detection unit connected to the moving end of the lifting assembly. The lifting assembly is rotatable to drive the pattern detection unit to move in a vertical direction. The pattern detection unit is used to detect the projected pattern on the projection plate. The pattern detection unit is rotatable relative to the lifting assembly around a second axis. The second axis moves along the vertical direction following the pattern detection unit. The second axis is parallel to the first axis and is horizontally arranged.

[0005] Furthermore, the detection mechanism also includes a horizontal moving component, the moving end of which is connected to the pattern detection unit. The horizontal moving component can drive the pattern detection unit to move horizontally to approach or move away from the projection plate, and the second axis follows the pattern detection unit to move horizontally.

[0006] Furthermore, the horizontal moving component includes a first horizontal moving module, a first auxiliary guide rail, and a crossbeam. The first horizontal moving module and the first auxiliary guide rail are arranged parallel to each other and spaced apart along the direction of the second axis. One end of the crossbeam is fixed to the moving end of the first horizontal moving module, and the other end of the crossbeam is slidably connected to the first auxiliary guide rail. The crossbeam is driven by the first horizontal moving module to move in the horizontal direction, and a lifting component is arranged on the crossbeam.

[0007] Furthermore, the lifting assembly includes a lifting module, a second auxiliary guide rail, and a mounting component. Both the lifting module and the second auxiliary guide rail are mounted on the crossbeam, and the lifting module and the second auxiliary guide rail are arranged parallel to each other along the direction of the second axis. One end of the mounting component is fixed to the moving end of the lifting module, and the other end of the mounting component is slidably connected to the second auxiliary guide rail. The mounting component is driven by the lifting module to move in the vertical direction, and the pattern detection unit is rotatably mounted on the mounting component.

[0008] Furthermore, the imaging mechanism also includes a first driver disposed on the first fixture, the first driver being used to drive the projection panel to rotate relative to the first fixture about a first axis; and / or,

[0009] The detection mechanism also includes a second driver, which drives the pattern detection unit to rotate relative to the lifting assembly about a second axis.

[0010] Furthermore, the projection detection device also includes a transport mechanism, which is used to drive the projection equipment to move toward or away from the projection panel.

[0011] Furthermore, the transport mechanism includes a second horizontal moving module and a clamp. The clamp is disposed on the moving end of the second horizontal moving module and is used to fix the projection device. The second horizontal moving module is used to drive the clamp to move in the horizontal direction, thereby moving the projection device closer to or away from the projection panel.

[0012] Furthermore, the testing mechanism also includes a first support member, a second support member, and a crossbeam. The first support member and the second support member are spaced apart along the direction of the second axis. The two ends of the crossbeam are connected to the first support member and the second support member, respectively. The lifting assembly is installed on the crossbeam, and the transport mechanism is located below the crossbeam and between the first support member and the second support member.

[0013] Furthermore, the projection detection device also includes a base plate, on which the imaging mechanism, detection mechanism, and transport mechanism are all mounted.

[0014] Furthermore, the projection testing device also includes a housing, in which the imaging mechanism, testing mechanism, and transport mechanism are all housed. The housing has an operating port, through which the projection equipment can be placed on the transport mechanism.

[0015] Compared with existing technologies, the projection inspection device provided in this application has the following advantages: During operation, the pattern detection unit of the inspection mechanism is positioned directly opposite the projection plate of the imaging mechanism. Light from a projection device, such as an optical engine, is projected onto the projection plate, creating a projected pattern. The pattern detection unit then inspects the projected pattern on the projection plate. During the inspection process, the user can adjust the projection angle of the projection device relative to the projection plate by rotating the projection plate relative to the first fixed frame around a first axis. Simultaneously, the height of the pattern detection unit can be adjusted using the lifting component of the inspection mechanism, and the pattern detection unit can be rotated relative to the lifting component around a second axis to maintain the pattern detection unit facing the projection plate. This enables multi-angle inspection, meeting the inspection needs of different application scenarios. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the projection detection device provided in the embodiments of this application;

[0018] Figure 2 for Figure 1 The diagram shows the structure of the projection detection device after it is hidden in the housing.

[0019] Figure 3 for Figure 2 A schematic diagram of the imaging mechanism of the projection detection device shown;

[0020] Figure 4 for Figure 2 The diagram shows the structure of the detection mechanism of the projection detection device behind the hidden pattern detection unit.

[0021] The following are the labeling elements in the figure:

[0022] 10. Imaging mechanism; 11. First fixture; 111. Mounting base; 12. First rotating shaft; 13. Projection panel; 14. First driver;

[0023] 20. Detection mechanism; 21. Lifting assembly; 211. Lifting module; 212. Second auxiliary guide rail; 213. Mounting component; 22. Second rotating shaft; 23. Pattern detection unit; 24. Horizontal movement assembly; 241. First horizontal movement module; 242. First auxiliary guide rail; 243. Crossbeam; 25. Second driver; 26. Second fixing frame; 261. First support member; 262. Second support member;

[0024] 30. Transportation mechanism; 31. Second horizontal movement module; 32. Fixture;

[0025] 40. Base plate;

[0026] 50. Housing; 51. Operating port. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] Please refer to the following: Figures 2 to 4This application provides a projection detection device, including an imaging mechanism 10 and a detection mechanism 20. The imaging mechanism 10 includes a first fixed frame 11 and a projection plate 13 disposed on the first fixed frame 11. The projection plate 13 is rotatable relative to the first fixed frame 11 around a first axis. The detection mechanism 20 includes a lifting assembly 21 and a pattern detection unit 23 connected to the moving end of the lifting assembly 21. The lifting assembly 21 is rotatable relative to the lifting assembly 21 around a second axis. The second axis moves along the vertical direction with the pattern detection unit 23. The second axis is parallel to the first axis and is horizontally disposed.

[0032] During operation, the pattern detection unit 23 of the detection mechanism 20 is positioned directly opposite the projection plate 13 of the imaging mechanism 10. Light from a projection device, such as an optical engine, is projected onto the projection plate 13, displaying a projected pattern. The pattern detection unit 23 then detects the projected pattern on the projection plate 13. During the detection process, the user can adjust the projection angle of the projection device relative to the projection plate 13 by rotating the projection plate 13 relative to the first fixed frame 11 around a first axis. Simultaneously, the user can adjust the height of the pattern detection unit 23 using the lifting component 21 of the detection mechanism 20 and rotate the pattern detection unit 23 relative to the lifting component 21 around a second axis to maintain the pattern detection unit 23 facing the projection plate 13. This enables multi-angle detection, meeting the detection needs of different application scenarios.

[0033] Since both the first axis and the second axis 2 are set horizontally, the angle adjustment of the projection plate 13 and the pattern detection unit 23 is specifically manifested as the adjustment of the pitch angle.

[0034] Specifically, the imaging mechanism 10 also includes a first rotating shaft 12, and the projection plate 13 is rotatably connected to the first fixed frame 11 through the first rotating shaft 12. The axis of the first rotating shaft 12 is the first axis. The detection mechanism 20 also includes a second rotating shaft 22, and the pattern detection unit 23 is rotatably connected to the lifting assembly 21 through the second rotating shaft 22. The axis of the second rotating shaft 22 is the second axis. The lifting assembly 21 can drive the pattern detection unit 23 and the second rotating shaft 22 to move synchronously in the vertical direction, thereby realizing that the second axis follows the pattern detection unit 23 to move in the vertical direction.

[0035] In one embodiment, such as Figure 3As shown, the first mounting frame 11 includes two mounting bases 111, which are spaced apart along the first axis. There are two first rotating shafts 12, each rotatably mounted on one of the mounting bases 111, with their axes coinciding. The projection plate 13 is located between the two mounting bases 111, and its opposite sides are fixed to the two first rotating shafts 12. By providing two mounting bases 111 and two first rotating shafts 12, with each mounting base 111 supporting one of the first rotating shafts 12 and each first rotating shaft 12 fixed to the opposite sides of the projection plate 13, the stability of the projection plate 13 during rotation is improved, thus facilitating precise adjustment of the projection plate 13's angle.

[0036] Specifically, a bearing seat is provided on the mounting base 111, and a bearing is provided inside the bearing seat. The bearing passes through the end of the first rotating shaft 12 away from the projection plate 13.

[0037] In one embodiment, such as Figure 3 As shown, the imaging mechanism 10 also includes a first driver 14 disposed on the first fixed frame 11. The first driver 14 is used to drive the projection plate 13 to rotate relative to the first fixed frame 11 around a first axis. By using the first driver 14 to drive the projection plate 13 to rotate, the angle of the projection plate 13 can be adjusted more precisely compared to manually controlling the rotation of the projection plate 13.

[0038] Specifically, the first driver 14 can be a servo motor, which can precisely control the rotation angle of the projection panel 13.

[0039] Specifically, the first driver 14 is mounted on any one of the mounting bases 111. The moving end of the first driver 14 is connected to the first rotating shaft 12 on the mounting base 111. By driving the first rotating shaft 12 to rotate, the projection panel 13 is driven to rotate. The other first rotating shaft 12 is a driven component that can rotate with the projection panel 13.

[0040] Specifically, the projection plate 13 is perpendicular to the horizontal plane in the initial state. The angle adjustment range of the projection plate 13 can be selected as ±35°, that is, the maximum angle of rotation of the projection plate 13 in the clockwise direction is 35°, and the maximum angle of rotation of the projection plate 13 in the counterclockwise direction is also 35°. Using this angle adjustment range can meet the detection needs of most application scenarios.

[0041] In one embodiment, such as Figure 2As shown, the detection mechanism 20 also includes a horizontal moving component 24. The moving end of the horizontal moving component 24 is connected to the pattern detection unit 23. The horizontal moving component 24 can drive the pattern detection unit 23 to move horizontally to approach or move away from the projection plate 13, and the second axis follows the pattern detection unit 23 to move horizontally. By driving the pattern detection unit 23 to move horizontally to approach or move away from the projection plate 13 through the horizontal moving component 24, the distance between the pattern detection unit 23 and the projection plate 13 can be adjusted, thereby meeting different detection requirements. Specifically, the lifting component 21 is disposed on the moving end of the horizontal moving component 24, that is, the pattern detection unit 23 is connected to the horizontal moving component 24 through the lifting component 21. The horizontal moving component 24 can drive the lifting component 21 to move horizontally, thereby causing the pattern detection unit 23 to approach or move away from the projection plate 13. During operation, the horizontal moving component 24 drives the lifting component 21 to move horizontally, and the lifting component 21 then drives the pattern detection unit 23 and the second rotating shaft 22 to move horizontally together, thereby realizing that the second axis follows the pattern detection unit 23 to move horizontally.

[0042] In one embodiment, such as Figure 2 As shown, the horizontal movement component 24 includes a first horizontal movement module 241, a first auxiliary guide rail 242, and a crossbeam 243. The first horizontal movement module 241 and the first auxiliary guide rail 242 are arranged parallel to each other along the direction of the second axis. One end of the crossbeam 243 is fixed to the first horizontal movement module 241, and the other end of the crossbeam 243 is slidably connected to the first auxiliary guide rail 242. The crossbeam 243 is driven by the first horizontal movement module 241 to move horizontally. The lifting component 21 is disposed on the crossbeam 243. The first horizontal movement module 241 is driven and fixedly connected to one end of the crossbeam 243, which can drive the crossbeam 243 to move horizontally. When the crossbeam 243 moves horizontally, the end of the crossbeam 243 away from the first horizontal movement module 241 can be slidably connected to the first auxiliary guide rail 242. The setting of the first auxiliary guide rail 242 can improve the stability of the crossbeam 243 when it moves, thereby helping to improve the positioning accuracy of the pattern detection unit 23. The lifting assembly 21 is mounted on the crossbeam 243. When the crossbeam 243 moves, it can drive the lifting assembly 21 to move together in the horizontal direction, thereby driving the pattern detection unit 23 to move closer to or further away from the projection plate 13.

[0043] Specifically, the first horizontal moving module 241 can be a linear module, which can be a synchronous belt type or a lead screw type. The linear module has the advantage of high positioning accuracy, which can realize the precise positioning of the pattern detection unit 23, thereby improving the detection accuracy. The linear module also has the advantages of simple structure, smooth movement and low noise.

[0044] In one embodiment, such as Figure 2As shown, the lifting assembly 21 includes a lifting module 211, a second auxiliary guide rail 212, and a mounting component 213. Both the lifting module 211 and the second auxiliary guide rail 212 are mounted on the crossbeam 243, and are parallel and spaced apart along the second axis. One end of the mounting component 213 is fixed to the moving end of the lifting module 211, and the other end is slidably connected to the second auxiliary guide rail 212. The mounting component 213 is driven by the lifting module 211 to move vertically, and the pattern detection unit 23 is rotatably mounted on the mounting component 213. The lifting module 211 is fixedly connected to one end of the mounting component 213, enabling it to drive the mounting component 213 to move vertically. When the mounting component 213 moves vertically, the end furthest from the lifting module 211 can slidably connect to the second auxiliary guide rail 212. The second auxiliary guide rail 212 improves the stability of the mounting component 213 during movement, thereby enhancing the positioning accuracy of the pattern detection unit 23. The pattern detection unit 23 is rotatably mounted on the mounting component 213. When the mounting component 213 moves, it can drive the pattern detection unit 23 to move together in the vertical direction, thereby realizing the height adjustment of the pattern detection unit 23.

[0045] Specifically, the lifting module 211 can be a linear module, which can be either a synchronous belt type or a lead screw type. The linear module has the advantage of high positioning accuracy, which can realize the precise positioning of the pattern detection unit 23, thereby improving the detection accuracy. The linear module also has the advantages of simple structure, smooth movement and low noise.

[0046] Specifically, the mounting component 213 is provided with two bearing seats, and bearings are installed in the bearing seats. Two bearings are respectively installed at both ends of the second rotating shaft 22, so that the second rotating shaft 22 can rotate relative to the mounting component 213. The pattern detection unit 23 is fixed on the second rotating shaft 22 by the mounting plate.

[0047] In one embodiment, such as Figure 4 As shown, the detection mechanism 20 also includes a second driver 25, which drives the pattern detection unit 23 to rotate relative to the lifting assembly 21 around a second axis. Using the second driver 25 to drive the pattern detection unit 23 to rotate allows for more precise adjustment of the angle of the pattern detection unit 23 compared to manually controlling its rotation, thereby improving detection accuracy.

[0048] Specifically, the second driver 25 can be a servo motor, which can precisely control the rotation angle of the pattern detection unit 23.

[0049] Specifically, the second driver 25 is mounted on the mounting component 213, and the power output end of the second driver 25 is connected to one end of the second rotating shaft 22. By driving the second rotating shaft 22 to rotate, the pattern detection unit 23 is driven to rotate.

[0050] Specifically, in the initial state, the pattern detection unit 23 is directly opposite the projection plate 13. The angle adjustment range of the pattern detection unit 23 is consistent with the angle adjustment range of the projection plate 13, which is ±35°. That is, the maximum angle of the pattern detection unit 23 rotating clockwise is 35°, and the maximum angle of the pattern detection unit 23 rotating counterclockwise is also 35°. Using this angle adjustment range can meet the detection needs of most application scenarios.

[0051] Specifically, the pattern detection unit 23 can be a colorimeter, which can be used to detect the clarity, color coordinates, color uniformity, illuminance uniformity, contrast, projection center position offset, projection size, etc. of the projected pattern.

[0052] In one embodiment, such as Figure 2 As shown, the detection mechanism 20 also includes a second fixed frame 26, and the horizontal moving assembly 24 is disposed on the second fixed frame 26. Specifically, as Figure 4 As shown, the second fixed frame 26 includes a first support member 261 and a second support member 262. The first support member 261 and the second support member 262 are spaced apart along the direction of the second axis. The first horizontal moving module 241 of the horizontal moving component 24 is disposed on the first support member 261, and the first auxiliary guide rail 242 of the horizontal moving component 24 is disposed on the second support member 262.

[0053] In one embodiment, such as Figure 2 As shown, the projection inspection device also includes a transport mechanism 30, which is used to drive the projection device to move closer to or further away from the projection plate 13. By driving the projection device to move closer to or further away from the projection plate 13 through the transport mechanism 30, the distance between the projection device and the projection plate 13 can be adjusted, thereby meeting different inspection requirements.

[0054] In one embodiment, such as Figure 2 As shown, the transport mechanism 30 includes a second horizontal moving module 31 and a clamp 32. The clamp 32 is disposed on the moving end of the second horizontal moving module 31. The clamp 32 is used to fix the projection device, and the second horizontal moving module 31 is used to drive the clamp 32 to move horizontally, thereby moving the projection device closer to or away from the projection panel 13. In operation, the projection device to be tested is first fixed on the clamp 32, and then the second horizontal moving module 31 is used to drive the clamp 32 and the projection device to move horizontally, thereby adjusting the distance between the projection device and the projection panel 13.

[0055] Specifically, the second horizontal moving module 31 can be a linear module, which can be a synchronous belt type or a lead screw type. The linear module has the advantage of high positioning accuracy, which can realize the precise positioning of the pattern detection unit 23, thereby improving the detection accuracy. The linear module also has the advantages of simple structure, smooth movement and low noise.

[0056] In one embodiment, such as Figure 2 As shown, the transport mechanism 30 is located below the crossbeam 243 of the horizontal moving assembly 24 and between the first support member 261 and the second support member 262 of the second fixed frame 26. By setting the first support member 261 and the second support member 262 to support both ends of the crossbeam 243, the structural stability can be improved, meeting the installation requirements of the lifting module 211 and the second auxiliary guide rail 212. On the other hand, a passageway for the transport mechanism 30 to pass through can be formed below the crossbeam 243 and between the first support member 261 and the second support member 262. This not only makes the overall structure more compact but also does not obstruct the projection light of the projection device. The projection light of the projection device can pass through the space between the first support member 261 and the second support member 262 and be projected onto the projection panel 13.

[0057] In one embodiment, such as Figure 2 As shown, the projection detection device also includes a base plate 40, on which the imaging mechanism 10, the detection mechanism 20, and the transport mechanism 30 are all mounted. By integrating the imaging mechanism 10, the detection mechanism 20, and the transport mechanism 30 onto the base plate 40, a modular structure is formed, which facilitates transportation and subsequent assembly with other components. Specifically, the first fixing frame 11 of the imaging mechanism 10, the second fixing frame 26 of the detection mechanism 20, and the second horizontal moving module 31 of the transport mechanism 30 are all mounted on the base plate 40.

[0058] In one embodiment, such as Figure 1 As shown, the projection detection device also includes a housing 50. The imaging mechanism 10, the detection mechanism 20, and the transport mechanism 30 are all housed within the housing 50. The housing 50 has an operation port 51, through which the projection device can be placed on the transport mechanism 30. During operation, the projection device to be tested is placed on the transport mechanism 30 inside the housing 50 through the operation port 51. The transport mechanism 30 drives the projection device to move towards the projection plate 13. Once the projection device has moved to a suitable position, the projected pattern can be detected. After detection, the transport mechanism 30 drives the projection device to move away from the projection plate 13. When the projection device moves to the operation port 51, the projection device is removed from the housing 50.

[0059] It should be noted that the above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A projection detection device, characterized by, The imaging mechanism comprises a first fixed frame and a projection plate arranged on the first fixed frame, the projection plate is capable of rotating relative to the first fixed frame around a first axis, and the detection mechanism comprises a lifting assembly and a pattern detection unit connected to a moving end of the lifting assembly, the lifting assembly is capable of driving the pattern detection unit to move along a vertical direction, the pattern detection unit is used for detecting a projection pattern projected on the projection plate, the pattern detection unit is capable of rotating relative to the lifting assembly around a second axis, the second axis moves along the vertical direction with the pattern detection unit, and the second axis is parallel to the first axis and is horizontally arranged.

2. The shadow detection device of claim 1, wherein: The detection mechanism further comprises a horizontal moving assembly, a moving end of the horizontal moving assembly is connected to the pattern detection unit, and the horizontal moving assembly is capable of driving the pattern detection unit to move along a horizontal direction to approach or move away from the projection plate, and the second axis moves along the horizontal direction with the pattern detection unit.

3. The shadow detection device of claim 2, wherein: The horizontal moving assembly comprises a first horizontal moving module, a first auxiliary guide rail and a crossbeam, the first horizontal moving module and the first auxiliary guide rail are arranged in parallel along a direction of the second axis, one end of the crossbeam is fixed to a moving end of the first horizontal moving module, and the other end of the crossbeam is slidably connected to the first auxiliary guide rail, the crossbeam is driven by the first horizontal moving module to move along the horizontal direction, and the lifting assembly is arranged on the crossbeam.

4. The shadow detection device of claim 3, wherein: The lifting assembly comprises a lifting module, a second auxiliary guide rail and a mounting piece, the lifting module and the second auxiliary guide rail are arranged on the crossbeam, and the lifting module and the second auxiliary guide rail are arranged in parallel along the direction of the second axis, one end of the mounting piece is fixed to a moving end of the lifting module, and the other end of the mounting piece is slidably connected to the second auxiliary guide rail, the mounting piece is driven by the lifting module to move along the vertical direction, and the pattern detection unit is rotatably arranged on the mounting piece.

5. The shadow detection apparatus of claim 1, wherein: The imaging mechanism further comprises a first driver arranged on the first fixed frame, the first driver is used for driving the projection plate to rotate relative to the first fixed frame around the first axis; and / or, The detection mechanism further comprises a second driver, the second driver is used for driving the pattern detection unit to rotate relative to the lifting assembly around the second axis.

6. The shadow detection apparatus of claim 1, wherein: The projection detection device further comprises a transportation mechanism, the transportation mechanism is used for driving a projection device to move along a direction of approaching or moving away from the projection plate.

7. The shadow detection device of claim 6, wherein: The transportation mechanism comprises a second horizontal moving module and a clamp, the clamp is arranged on a moving end of the second horizontal moving module, the clamp is used for fixing the projection device, and the second horizontal moving module is used for driving the clamp to move along the horizontal direction, so that the projection device approaches or moves away from the projection plate.

8. The shadow detection device of claim 6, wherein: The detection mechanism further comprises a first support, a second support and a crossbeam, the first support and the second support are arranged in a direction of the second axis, two ends of the crossbeam are connected with the first support and the second support respectively, the lifting assembly is arranged on the crossbeam, the conveying mechanism is located below the crossbeam and between the first support and the second support.

9. The shadow detection apparatus of claim 6, wherein: The projection detection device further comprises a bottom plate, the imaging mechanism, the detection mechanism and the conveying mechanism are arranged on the bottom plate.

10. The shadow detection device of claim 6, wherein: The projection detection device further comprises a machine shell, the imaging mechanism, the detection mechanism and the conveying mechanism are arranged in the machine shell, the machine shell is provided with an operation port, and the projection equipment can be placed on the conveying mechanism through the operation port.

Images