A multifunctional light source detection device

Abstract

The utility model relates to optical detection equipment technical field discloses a kind of multifunctional light source detection device, the device includes symmetrical linkage's clamping assembly and the fixed assembly of quick positioning locking: clamping assembly is linked through connecting rod, bottom plate with sliding slot and spring linkage, realizes workpiece automatic centring clamping;Fixed assembly adopts limit pin positioning, again through L type board, threaded rod and nut compression, realize the high-precision reset and quick locking of CCD.The utility model significantly improves the accuracy of workpiece clamping and the positioning accuracy of camera repeated installation, effectively guarantees the consistency of detection reference, and convenient operation, greatly improves production and maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical testing equipment technology, and in particular to a multifunctional light source testing device. Background Technology

[0002] In modern industrial production, Automated Optical Inspection (AOI) technology is widely used in product quality control. It uses a high-precision camera (such as CCD) in conjunction with a light source to perform non-contact measurement and defect screening of products. In order to ensure the accuracy and consistency of the test results, the relative position between the workpiece under test and the camera must be precisely and stably controlled.

[0003] In practical applications, inspection systems typically need to rapidly inspect large quantities of workpieces, especially those with axisymmetric features (such as cylinders and ring-shaped parts). Currently, workpiece positioning usually relies on simple clamps or manual placement onto a support platform. However, when using ordinary clamps with one side fixed and the other moving, the workpiece's center will shift as its diameter changes due to the single reference plane, making it difficult to ensure that the workpiece's center is precisely aligned with the camera's optical axis after each clamping. Manual placement is even more prone to introducing random positional errors, which directly cause deviations in the inspection software when performing dimensional measurements or feature recognition, thus affecting the accuracy and reliability of the inspection.

[0004] Furthermore, cameras and light sources in optical inspection systems are precision components that require regular maintenance, cleaning, or replacement due to changes in production tasks. Traditional fixing methods often involve directly bolting the camera bracket to the equipment frame. When the camera is disassembled and reinstalled, the unavoidable gaps between the bolts and the mounting holes make it almost impossible to restore it to the exact same position and orientation as before disassembly. This slight positional change is fatal to high-precision optical systems, causing the calibration parameters of the entire inspection system to fail and resulting in inaccurate inspection results. To restore inspection accuracy, professional technicians must spend a significant amount of time recalibrating the system, which greatly reduces production efficiency and increases maintenance costs. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multifunctional light source detection device, which aims to improve the problems of inaccurate positioning and difficulty in automatic centering when optical detection devices are clamping axisymmetric workpieces.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A multifunctional light source detection device includes: a non-closed-loop tunnel, a glass turntable, a coaxial light source, a CCD, a fixing plate disposed on the CCD, a clamping assembly disposed above the glass turntable, a fixing assembly for fixing the CCD, and a limiting pin.

[0007] The clamping assembly is a symmetrical linkage structure, which includes a connecting plate, a slide rail disposed on the connecting plate, two clamping plates that move along the slide rail, and a connecting rod and a base plate with a sliding groove for driving the two clamping plates to move synchronously in opposite directions; the fixing assembly is a quick-locking structure, which includes an L-shaped plate, a threaded rod, a fixing block and a nut.

[0008] Furthermore, the fixing block and the fixing plate on the CCD are connected by a plug-in method, and the L-shaped plate is pressed and fixed by tightening the nut; at the same time, the connecting rod of the clamping assembly slides with the base plate with the sliding groove to realize automatic centering clamping of the workpiece.

[0009] Furthermore, the clamping assembly also includes a fixed post and a sliding rod. The connecting rod is pivotally connected to the connecting plate via the fixed post, and the two clamping plates are slidably mounted on the slide rail via the sliding rod to ensure the stability and accuracy of the movement.

[0010] Furthermore, the fixing assembly also includes a fixing rod, a first rotating shaft, and a second rotating shaft. The L-shaped plate is pivotally connected to the fixing post via the first rotating shaft, and the threaded rod is pivotally connected to one end of the L-shaped plate via the second rotating shaft, forming a double rotating shaft structure to facilitate the swinging of the fixing block and quick assembly and disassembly.

[0011] Furthermore, the fixing post of the fixing component and the limiting pin are both set on the second fixing plate, providing a uniform and stable mounting reference for the camera.

[0012] Furthermore, one end of the first connecting rod is pivotally connected to the bottom of one of the clamping plates, and one end of the second connecting rod is pivotally connected to the bottom of the other clamping plate, so as to accurately transmit the swinging motion of the connecting rod to the clamping plate.

[0013] Furthermore, the spring is a tension spring, with its two ends connected to the bottom of the two clamping plates respectively, to provide power for automatic clamping and resetting.

[0014] Furthermore, the nut is sleeved on the outer wall of the threaded rod, and one end face of the nut is used to press against the upper surface of the L-shaped plate, thereby achieving efficient and reliable locking through the threaded pair.

[0015] Furthermore, the device also includes a plug through which the CCD and the coaxial light source are electrically connected, facilitating unified power supply and signal transmission.

[0016] This utility model has the following beneficial effects: 1. In this utility model, by setting up symmetrically linked clamping components, automatic centering can be achieved when clamping cylindrical or annular workpieces, ensuring that the workpiece is always located in the center of the detection area, which significantly improves the accuracy of clamping and positioning; at the same time, its ingenious structure allows for bidirectional clamping through unidirectional operation, making operation convenient and improving the efficiency of loading and unloading.

[0017] 2. In this utility model, a fixing component combining a positioning pin and a clamping locking mechanism is used to achieve rapid disassembly and high-precision reset of the inspection camera. Each time it is reinstalled, the camera can be restored to the preset precise position, ensuring the consistency of the inspection benchmark between different batches or before and after maintenance, avoiding the time waste and accuracy loss caused by repeated adjustments, and the structure is stable and has strong vibration resistance after locking. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a multifunctional light source detection device proposed in this utility model; Figure 2 This is a schematic diagram of the clamping component of a multifunctional light source detection device proposed in this utility model. Figure 3 This is a schematic diagram of the clamping plate portion of a multifunctional light source detection device proposed in this utility model; Figure 4 This is a schematic diagram of the spring portion of a multifunctional light source detection device proposed in this utility model; Figure 5 This is a schematic diagram of the CCD component of a multifunctional light source detection device proposed in this utility model. Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0019] Legend: 1. Non-closed-loop tunnel; 2. Glass turntable; 3. Coaxial light source; 4. CCD; 5. Plug; 6. Fixing plate one; 7. Clamping assembly; 701. Connecting plate; 702. Slide rail; 703. Clamping plate; 704. Base plate; 705. Sliding rod; 706. Spring; 707. Slide groove; 708. Connecting rod one; 709. Connecting rod two; 710. Fixing column; 8. Fixing plate two; 9. Fixing assembly; 901. Fixing column; 902. L-shaped plate; 903. Fixing groove; 904. Threaded rod; 905. Fixing block; 906. Rotating shaft one; 907. Rotating shaft two; 908. Nut; 10. Limit pin. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figure 1 - Figure 6 This utility model provides an embodiment of a multifunctional light source detection device. The overall structure of the device includes a non-closed-loop tunnel 1, a glass turntable 2 rotatably disposed inside the non-closed-loop tunnel 1, and a clamping assembly 7 disposed above the glass turntable 2. The device also includes a coaxial light source 3 and a CCD 4 for optical detection, with a fixing plate 6 fixedly connected to the outer wall of the CCD 4. The device further includes a fixing assembly 9 and a limiting pin 10 that cooperate with the fixing plate 6, the fixing assembly 9 and the limiting pin 10 working together to detachably fix the CCD 4.

[0022] Reference Figure 2 - Figure 3 The clamping assembly 7 includes a connecting plate 701 serving as a base, a slide rail 702 fixedly connected to the upper surface of the connecting plate 701, and two clamping plates 703 slidably connected to the slide rail 702 via a sliding rod 705, allowing the two clamping plates 703 to move towards or away from each other along the length of the slide rail 702. The clamping assembly 7 also includes a movable base plate 704, which has two symmetrically shaped slide grooves 707 inside, and two connecting rods, namely connecting rod one 708 and connecting rod two 709, one end of which is rotatably connected to the connecting plate 701 via a fixing post 710. The other ends of connecting rod one 708 and connecting rod two 709 are integrally formed with protrusions, which slide in cooperation with the slide grooves 707 in the base plate 704. A spring 706 serves as a component providing clamping force; it is a tension spring, and its two ends are fixedly connected to the lower part of the two clamping plates 703 respectively.

[0023] Reference Figure 5 - Figure 6The device includes a second fixing plate 8, which serves as the mounting base for the fixing component 9 and the limiting pin 10. The fixing component 9 includes a fixing rod 901, which is vertically fixed to the second fixing plate 8. An L-shaped plate 902 is rotatably connected to the fixing rod 901 via a first rotating shaft 906 located inside the L-shaped plate 902. One end of a threaded rod 904 is rotatably connected to the end of the L-shaped plate 902 away from the fixing rod 901 via a second rotating shaft 907. A fixing block 905 is fixedly connected to the other end of the threaded rod 904. A nut 908 is connected to the threaded rod 904. 4. Threaded connection: The fixing plate 6 on the CCD4 has a positioning hole for positioning and engaging with the limiting pin 10 and a fixing groove 903 for precise positioning and engaging with the fixing block 905. During installation, the fixing plate 6 first engages with the limiting pin 10 on the fixing plate 8. Then, the L-shaped plate 902 and the threaded rod 904 rotate, causing the fixing block 905 to be inserted into the fixing groove 903. The nut 908 is then tightened, and the end face of the nut 908 contacts and presses against the upper surface of the L-shaped plate 902, thereby achieving a firm fixation of the CCD4.

[0024] Reference Figure 4 When workpiece inspection is required, the clamping assembly 7 is operated first. By pulling one of the clamping plates 703, the clamping plate 703 moves outward along the slide rail 702, causing the base plate 704 to move synchronously. This process stretches the springs 706, which are connected to the bottom of the two clamping plates 703 at both ends. When the base plate 704 moves, the slide groove 707 inside it forces the protrusions on the connecting rod 1 708 and connecting rod 2 709 to slide along the groove wall. Since both connecting rod 1 708 and connecting rod 2 709 are rotated through the fixed column 710, Connected to the connecting plate 701, this linkage structure drives another clamping plate 703 to move synchronously in the opposite direction along the slide rail 702, thereby opening the clamping opening. After the workpiece is placed between the two clamping plates 703, it is released, and the spring 706 rebounds. Its elastic force drives the two clamping plates 703 to move towards each other, realizing automatic centering clamping and fixing of the workpiece. In this structure, one end of the connecting rod 708 is rotatably connected to the bottom of one of the clamping plates 703, and one end of the connecting rod 709 is rotatably connected to the bottom of the other clamping plate 703.

[0025] Reference Figure 6 For the installation and fixing of CCD4, firstly, align the fixing plate 6 on CCD4 with the limiting pin 10 on fixing plate 8 to achieve initial positioning. Then, rotate L-shaped plate 902 around its internal pivot 906, which will drive threaded rod 904 to rotate around pivot 907, so that fixing block 905 is aligned and inserted into fixing groove 903 on fixing plate 6. Finally, tighten the nut 908 sleeved on the outer wall of threaded rod 904. The end face of nut 908 presses against the upper surface of L-shaped plate 902, completing the precise positioning and locking of CCD4. Disassembly is performed by reversing the operation.

[0026] Reference Figure 4The clamping assembly 7 also includes a fixing post 710, which is fixedly connected to the connecting plate 701 and provides a rotation fulcrum for connecting rod 1 708 and connecting rod 2 709. The two clamping plates 703 are slidably mounted on the slide rail 702 via a sliding rod 705, which supports the clamping plates 703 and ensures their smooth movement along the slide rail 702.

[0027] Reference Figure 6 In order to achieve the quick assembly and disassembly function of the fixing component 9, the fixing component 9 also includes a first rotating shaft 906 and a second rotating shaft 907. The L-shaped plate 902 is rotatably connected to the fixing rod 901 through the first rotating shaft 906 inside it, and the threaded rod 904 is rotatably connected to one end of the L-shaped plate 902 through the second rotating shaft 907. The double rotating shaft structure formed by the first rotating shaft 906 and the second rotating shaft 907 is used to allow the fixing block 905 to swing smoothly out of the fixing groove 903 when the CCD4 is disassembled.

[0028] To provide a stable mounting reference for the fixed component 9, the device also includes a second fixing plate 8. The fixing rod 901 and the limiting pin 10 are all fixedly mounted on the second fixing plate 8. The second fixing plate 8 is used to integrate the mounting base and the initial positioning reference of the fixed component 9, ensuring the constancy of the positional relationship between the two, thereby improving the positioning accuracy of repeated installation of the CCD4.

[0029] Reference Figure 2 - Figure 6 One end of the first connecting rod 708 inside the clamping assembly 7 is rotatably connected to the bottom of one of the clamping plates 703, and the other end of the connecting rod is provided with a protrusion. One end of the second connecting rod 709 is rotatably connected to the bottom of another clamping plate 703, and the other end of the connecting rod is also provided with a protrusion. This connection method is used to accurately convert the swing of the connecting rod into the linear reciprocating motion of the clamping plate.

[0030] Spring 706 is specifically a tension spring. Both ends of spring 706 are fixedly connected to the bottom of two clamping plates 703. When spring 706 is stretched, it stores elastic potential energy, which is used to release energy when released and drive the two clamping plates 703 to move towards each other to clamp the workpiece. Nut 908 is sleeved on the outer wall of threaded rod 904. The rotational motion of nut 908 is converted into linear motion along the axial direction of threaded rod 904 through threaded pair. Its end face is used to apply pressure to the upper surface of L-shaped plate 902, thereby firmly pressing the entire CCD4 on the positioning reference and avoiding displacement caused by vibration or external force.

[0031] The device also includes a plug 5, through which the CCD 4 and coaxial light source 3 are electrically connected to an external power supply and control system. The plug 5 is used to provide power to the CCD 4 and coaxial light source 3 and to transmit data signals.

[0032] For the driving mechanism of the glass turntable 2, the internal light-emitting circuit of the coaxial light source 3, and the internal imaging principle of the CCD 4, those skilled in the art can choose mature products on the market or adopt conventional designs according to actual needs. Their specific implementation methods are well-known technologies in this field and will not be elaborated here.

[0033] Working Principle: When using the multi-functional light source detection device to clamp the workpiece, the operator first pulls outward on any one of the clamping plates 703. The clamping plate 703 then slides outward along the slide rail 702, driving the connected base plate 704 to move synchronously. This action stretches the tension spring 706 connected below the two clamping plates 703, storing elastic potential energy. During the movement of the base plate 704, the two internal slide grooves 707 constrain and guide the protrusions on connecting rod 1 708 and connecting rod 2 709 to slide along a specific trajectory. Since the other ends of connecting rod 1 708 and connecting rod 2 709 are rotatably connected to the fixed connecting plate 701 via a fixed post 710, the connecting rods will swing around the fixed post 710. This swinging motion acts on the other clamping plate 703 through the other end of the connecting rod, driving it to move synchronously in the opposite direction along the slide rail 702. This linkage process makes the opening between the two clamping plates 703 open evenly. After the workpiece to be tested is placed between the two clamping plates 703, the operator releases the external force, and the elastic force stored in the spring 706 drives the two clamping plates 703 to close towards each other. Through the symmetrical linkage structure, the workpiece is automatically clamped in the center position, thereby solving the eccentricity problem caused by manual placement and improving the accuracy of subsequent testing. When installing or fixing the CCD4, first align the fixing plate 6 on the CCD4 with the vertically set limiting pin 10 on the fixing plate 8, and insert the limiting pin 10 into the positioning hole of the fixing plate 6 to complete the initial rough positioning. Then, rotate the L-shaped plate 902 around the rotating shaft 906 inside it, and drive the threaded rod 904 to rotate around the rotating shaft 907, so that the fixing block 905 is accurately inserted into the fixing groove 903 on the fixing plate 6 to complete the precise positioning. Finally, tighten the nut 908 sleeved on the outer wall of the threaded rod 904 by hand. The nut 908 moves down along the thread and presses the upper surface of the L-shaped plate 902 with its end face. Through the leverage and the self-locking property of the thread, a stable and firm locking force is applied to the entire CCD4, thereby solving the problem of the camera shifting due to vibration or accidental contact. When disassembling, simply reverse the operation, loosen the nut 908, swing the L-shaped plate 902 away, and the CCD4 can be quickly removed.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multifunctional light source detection device, comprising a non-closed-loop tunnel (1), a glass turntable (2) disposed in the non-closed-loop tunnel (1), a coaxial light source (3) and a CCD (4), wherein a fixing plate (6) is provided on the CCD (4), and a clamping assembly (7) is provided above the glass turntable (2). The device further comprises a fixing assembly (9) and a limiting pin (10) for fixing the CCD (4). Its features are, The clamping assembly (7) includes a connecting plate (701), a slide rail (702) disposed on the connecting plate (701), two clamping plates (703) disposed opposite to each other along the slide rail (702), a movable base plate (704), a spring (706), two connecting rods (708 and 709), the base plate (704) is provided with two sliding grooves (707), and both connecting rods (708 and 709) are provided with protrusions, which are slidably disposed in the sliding grooves (707); The fixing component (9) includes an L-shaped plate (902), a threaded rod (904), a fixing block (905), and a nut (908). The fixing plate (6) is provided with a fixing groove (903). The fixing block (905) is inserted into the fixing groove (903). The L-shaped plate (902) is pressed by the nut (908).

2. The multifunctional light source detection device according to claim 1, characterized in that: The clamping assembly (7) further includes a fixing post (710); the two clamping plates (703) are slidably mounted on the slide rail (702) via a sliding rod (705); the first connecting rod (708) and the second connecting rod (709) are pivotally connected to the connecting plate (701) via the fixing post (710).

3. The multifunctional light source detection device according to claim 1, characterized in that: The fixing component (9) further includes a fixing rod (901), a first rotating shaft (906) and a second rotating shaft (907); the L-shaped plate (902) is pivotally connected to the fixing rod (901) through the first rotating shaft (906) inside it; the threaded rod (904) is pivotally connected to one end of the L-shaped plate (902) through the second rotating shaft (907).

4. The multifunctional light source detection device according to claim 3, characterized in that: Both the fixing rod (901) and the limiting pin (10) are mounted on the fixing plate (8).

5. The multifunctional light source detection device according to claim 1, characterized in that: One end of the first connecting rod (708) is pivotally connected to the bottom of one of the clamping plates (703), and the other end of the connecting rod is provided with the protrusion; one end of the second connecting rod (709) is pivotally connected to the bottom of another clamping plate (703), and the other end of the connecting rod is also provided with the protrusion.

6. The multifunctional light source detection device according to claim 1, characterized in that: The spring (706) is a tension spring, with its two ends connected to the bottom of the two clamping plates (703).

7. The multifunctional light source detection device according to claim 1, characterized in that: The nut (908) is sleeved on the outer wall of the threaded rod (904), and one end face of the nut (908) is used to press against the upper surface of the L-shaped plate (902).

8. The multifunctional light source detection device according to claim 1, characterized in that: The CCD (4) and the coaxial light source (3) are electrically connected via a plug (5).

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