Optical detection device and PCB detection equipment

Abstract

The utility model belongs to the technical field of optical detection, and particularly relates to an optical detection device and PCB detection equipment. The optical detection device comprises a supporting frame, a light source assembly, a camera assembly and a cooling assembly, and the light source assembly and the camera assembly are arranged on the supporting frame; the cooling assembly comprises a first cooling element, a second cooling element and a flow guide unit, the first cooling element is installed on the supporting frame, the flow guide unit is used for guiding air around the camera assembly to the first cooling element for cooling, and cooling is achieved through heat exchange between the first cooling element and the air; the second cooling element is arranged on the light source assembly, heating and heat dissipation of the light source assembly are balanced, cooling of the light source assembly is achieved, the influence of the environment on the optical detection device is reduced through the cooling assembly, expansion and shrinkage of the optical lens at the high temperature are reduced, and then the accuracy of the optical detection result is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical detection, and particularly relates to an optical detection device and a PCB detection device. Background Art

[0002] During the manufacturing process of a PCB, due to being easily affected by process limitations and environmental factors, various defects often occur on the PCB, such as short circuits, open circuits, broken wires, poor solder joints, etc. In order to ensure the quality of the PCB, an online optical detection method is usually adopted to detect and identify these defects.

[0003] During online optical detection, an image of the product is captured through an optical lens. After being used for a period of time, the temperature near the optical lens rises, and the material constituting the optical lens expands and contracts at high temperatures, resulting in the captured image becoming blurred or deformed, reducing the accuracy of the detection result. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: aiming at the problem that the accuracy of the detection result of the existing optical lens decreases at high temperatures, an optical detection device and a PCB detection device are provided.

[0005] To solve the above technical problem, on the one hand, an embodiment of the utility model provides an optical detection device, including a support frame, a light source assembly, a camera assembly, and a cooling assembly. The light source assembly and the camera assembly are arranged on the support frame;

[0006] The cooling assembly includes a first cooling element, a second cooling element, and a first guiding unit. The first cooling element is installed on the support frame, and the first guiding unit is used to guide the air around the camera assembly to the first cooling element for cooling;

[0007] The second cooling element is arranged on the light source assembly and is used to cool the light source assembly.

[0008] Optionally, the first cooling element includes a first cooling pipe, and the first cooling pipe is installed on the support frame. The first cooling pipe is used to connect a refrigeration device to introduce a cooling medium, thereby cooling the air around the first cooling element.

[0009] Optionally, the first cooling element further includes first fins, and the first fins are arranged on the outer peripheral surface of the first cooling pipe;

[0010] The first fins extend spirally around the first cooling pipe; or;

[0011] A plurality of the first fins are provided, and the plurality of first fins are arranged at intervals along the axis of the first cooling pipe.

[0012] Optionally, the first flow guiding unit includes a connecting member and a plurality of first flow guiding members. The connecting member is connected to the support frame, and the plurality of first flow guiding members are spaced apart on the connecting member.

[0013] Optionally, the light source assembly includes a light box and a light source disposed inside the light box. The light box includes a first end plate, a second end plate, and a surrounding plate. The first end plate and the second end plate are connected to opposite ends of the surrounding plate.

[0014] The second cooling element is disposed inside the light box and connected between the first end plate and the second end plate. A plurality of air vents are sequentially spaced apart on the surrounding plate.

[0015] Optionally, a plurality of the second cooling elements are provided.

[0016] The second cooling element includes a second cooling pipe connected between the first end plate and the second end plate. The second cooling pipe is used to connect to a refrigeration device to introduce a cooling medium, thereby cooling the light source assembly.

[0017] Optionally, the second cooling element further includes second fins disposed on an outer peripheral surface of the second cooling pipe.

[0018] Optionally, the second fins extend spirally around the second cooling pipe; or;

[0019] A plurality of the second fins are provided, and the plurality of second fins are spaced apart along an axis of the second cooling pipe.

[0020] On the other hand, an embodiment of the present invention provides a PCB detection device, including a machine cover, a refrigeration device, and the optical detection device as described above. The optical detection device is disposed inside the machine cover, and the refrigeration device is disposed outside the machine cover.

[0021] The refrigeration device is used to provide a cooling medium to the first cooling element and the second cooling element.

[0022] Optionally, a second flow guiding unit is provided on the machine cover. The second flow guiding unit is used to drive the convection of air inside and outside the machine cover.

[0023] The optical detection device provided by the embodiment of the present utility model causes the air temperature around it to rise during the working process of the camera assembly. Through the guidance of the air around the camera assembly by the first diversion unit, heat exchange occurs between the relatively hot air and the first cooling element, so that the heat at the camera assembly can be dissipated as soon as possible, realizing the cooling of the camera assembly. The light source assembly generates a large amount of heat during the working process. The air around the light source assembly is cooled by the second cooling element, so that the heat generation and heat dissipation of the light source assembly are relatively balanced, realizing the cooling of the light source assembly. Through the cooling assembly, the influence of the environment on the optical detection device can be reduced, and the expansion and contraction of the optical lens at high temperature can be reduced, thereby improving the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of an optical detection device provided by an embodiment of the present utility model;

[0025] Figure 2 is an assembly drawing of a camera assembly and a cooling assembly provided by an embodiment of the present utility model;

[0026] Figure 3 is Figure 2 a side schematic diagram;

[0027] Figure 4 is a schematic diagram of a cooling assembly provided by an embodiment of the present utility model.

[0028] The reference numerals in the specification are as follows:

[0029] 1, support frame;

[0030] 2, light source assembly; 21, light box; 211, first end plate; 212, enclosing plate; 2121, air outlet; 22, light source;

[0031] 3, camera assembly;

[0032] 4, cooling assembly; 41, first cooling element; 411, first cooling pipe; 412, first fin; 42, second cooling element; 43, first diversion unit; 431, connecting piece; 432, first diversion piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0034] As Figures 1 to 4As shown in the figure, an optical detection device provided by an embodiment of the present invention includes a support frame 1, a light source assembly 2, a camera assembly 3, and a cooling assembly 4. The light source assembly 2 and the camera assembly 3 are arranged on the support frame 1.

[0035] The cooling assembly 4 includes a first cooling element 41, a second cooling element 42, and a first guiding unit 43. The first cooling element 41 is installed on the support frame 1. The first guiding unit 43 is used to guide the air around the camera assembly 3 to the first cooling element 41 for cooling. The air guided past is cooled by the first cooling element 41, so that heat can be dissipated in time. The second cooling element 42 is arranged on the light source assembly 2 and is used to cool the light source assembly 2 to ensure the stable performance of the light source 22.

[0036] During long-term operation, the camera assembly 3 generates more heat, causing the temperature of the air around it to rise. Through the guidance of the air around the camera assembly 3 by the first guiding unit 43, heat exchange occurs between the hotter air and the first cooling element 41, so that the heat at the camera assembly 3 can be dissipated as soon as possible, realizing the cooling at the camera assembly 3, maintaining the temperature of the camera assembly 3 within a suitable range, and ensuring that the camera assembly 3 can stably obtain high-quality images.

[0037] A large amount of heat is generated during the light-emitting process of the light source assembly 2. The light source assembly 2 is cooled by the second cooling element 42 near the light source assembly 2, so that the light source assembly 2 is maintained within a suitable temperature range. During the long-term optical detection process, through the cooling effect of the cooling assembly 4, the performance of the camera assembly 3 and the light source assembly 2 can be kept relatively stable, thereby enhancing the detection stability of the entire optical detection device.

[0038] In one embodiment, as Figure 4 shown, the first cooling element 41 includes a first cooling pipe 411. The first cooling pipe 411 is installed on the support frame 1. The first cooling pipe 411 is used to connect a refrigeration device to introduce a cooling medium, and then cool the air around the first cooling element 41.

[0039] The first cooling pipe 411 is connected to a refrigeration device to introduce a cooling medium, which can achieve efficient heat transfer. After the cooling medium is cooled to a lower temperature in the refrigeration device, it circulates through the first cooling pipe 411. Since the cooling medium is in direct contact with the inner wall of the first cooling pipe 411, after the air around the camera assembly 3 is guided to the first cooling pipe 411, heat can be quickly conducted from the surrounding air to the first cooling pipe 411 and then taken away by the cooling medium, so that heat can be dissipated in time, with good heat dissipation efficiency, and a suitable temperature can be maintained near the camera assembly 3.

[0040] Among them, the first cooling pipe 411 is made of a material with good thermal conductivity and has relatively good thermal conductivity. The first cooling pipe 411 can be, but is not limited to, a stainless steel pipe, and the first cooling pipe 411 is a cylindrical pipe.

[0041] In one embodiment, as Figure 4 shown, the first cooling element 41 further includes a first fin 412. The first fin 412 is arranged on the outer peripheral surface of the first cooling pipe 411. After the first fin 412 exchanges heat with the surrounding air, the heat is conducted from the first fin 412 to the first cooling pipe 411 for cooling. In this embodiment, the heat dissipation area can be increased through the first fin 412, the area of contact between the first cooling element 41 and the surrounding air is increased, and the heat dissipation efficiency of the first cooling element 41 is improved.

[0042] Among them, the first fin 412 extends spirally around the first cooling pipe 411; or; a plurality of first fins 412 are provided, and the plurality of first fins 412 are arranged at intervals along the axis of the first cooling pipe 411. When the first flow guiding unit 43 guides air to flow through the first fin 412, the channels formed between the first fins 412 can guide the air flow, making the air flow more disordered and rapid, so that the hot air is more easily replaced by the cold air, further improving the heat dissipation efficiency of the first cooling element 41. In this embodiment, "a plurality" means greater than or equal to two, and the meaning of "a plurality" is the same in each embodiment and will not be repeated hereinafter.

[0043] In other alternative embodiments, the first fin 412 is square, and a plurality of first fins 412 are provided, and the plurality of first fins 412 are arranged at intervals in the circumferential direction around the first cooling pipe 411.

[0044] In one embodiment, the first fin 412 is an aluminum fin and has good thermal conductivity.

[0045] In one embodiment, as Figure 3 、 Figure 4 shown, the first flow guiding unit 43 includes a connecting member 431 and a plurality of first flow guiding members 432. The connecting member 431 is connected to the support frame 1, and the plurality of first flow guiding members 432 are arranged at intervals on the connecting member 431. In the optical detection device, the air temperature around the camera assembly 3 may be unevenly distributed. Through the plurality of first flow guiding members 432, the air in different regions can be effectively guided, and the air around the camera assembly 3 is evenly guided to the first cooling element 41 for cooling, avoiding the situation that part of the air cannot be guided and resulting in uneven cooling, so as to ensure that the air around the entire camera assembly 3 can be cooled and maintain the uniformity of the working temperature of the camera assembly 3.

[0046] The quantity of the first air guide member 432 is optimized and arranged according to the shape of the camera assembly 3 and the heat dissipation requirements. For different camera assemblies 3, the best air guiding effect can be achieved by adjusting the spacing and position of the first air guide member 432.

[0047] In one embodiment, the first air guide member 432 includes, but is not limited to, a fan, a deflector, or a ventilator. Preferably, the first air guide member 432 is a fan, which has good air guiding ability and does not occupy too much space of the optical detection device.

[0048] In one embodiment, as Figure 1 , Figure 2 shown, the light source assembly 2 includes a light box 21 and a light source 22 disposed inside the light box 21. The light box 21 includes a first end plate 211, a second end plate, and a surrounding plate 212. The first end plate 211 and the second end plate are connected to opposite ends of the surrounding plate 212. The second cooling element 42 is disposed inside the light box 21 and is connected between the first end plate 211 and the second end plate. After the light source 22 emits light and generates heat inside the light box 21, the heat can be conducted through the second cooling element 42, providing a direct heat conduction path for heat dissipation inside the light box 21 and being able to quickly absorb the heat generated by the light source 22.

[0049] As Figure 4 shown, a plurality of air vents 2121 are sequentially and spacedly disposed on the surrounding plate 212, and these air vents 2121 promote the circulation of the air inside the light box 21 and the external environment. When the air inside the light box 21 is heated by the light source 22, in addition to being cooled by the second cooling element 42, the hot air can also be discharged from the light box 21 through the air vents 2121, and the cold air from the outside can enter the light box 21 from other air vents 2121, forming natural convection, thereby further improving the heat dissipation efficiency and preventing the internal temperature of the light box 21 from being too high and affecting the performance of the light source assembly 2.

[0050] In one embodiment, as Figure 3 shown, a plurality of second cooling elements 42 are provided, which can further improve the cooling efficiency of the light source assembly 2.

[0051] The second cooling element 42 includes a second cooling pipe, and the second cooling pipe is connected between the first end plate 211 and the second end plate. The second cooling pipe is used to connect to a refrigeration device to introduce a cooling medium, thereby cooling the light source assembly 2.

[0052] During long - term operation, the light source assembly 2 generates a large amount of heat, causing the air temperature in the light box 21 to rise. The second cooling pipe is connected to a refrigeration device to introduce a cooling medium, enabling efficient heat transfer. After the cooling medium is cooled to a lower temperature in the refrigeration device, it circulates through multiple second cooling pipes. Since the cooling medium is in direct contact with the inner wall of the second cooling pipe, the heat in the light box 21 can be quickly conducted into the multiple second cooling pipes and then carried away by the cooling medium, allowing the heat to be dissipated in a timely manner. It has a good heat dissipation efficiency, enabling the area near the light source assembly 2 to maintain an appropriate temperature.

[0053] Among them, the second cooling pipe is made of a material with good thermal conductivity and has relatively good thermal conductivity. The second cooling pipe can be, but is not limited to, a stainless - steel pipe, and the second cooling pipe is a cylindrical pipe.

[0054] In one embodiment, the second cooling element 42 further includes second fins. The second fins are arranged on the outer circumferential surface of the second cooling pipe. After the second fins exchange heat with the air in the light box 21, the heat is conducted from the second fins to the second cooling pipe for cooling. In this embodiment, the second fins can increase the heat dissipation area, increase the contact area between the second cooling element 42 and the air in the light box 21, and improve the heat dissipation efficiency of the second cooling element 42.

[0055] In one embodiment, the first fin 412 is an aluminum fin, which has good thermal conductivity.

[0056] In one embodiment, the second fins extend spirally around the second cooling pipe; or; there are multiple second fins, and the multiple second fins are arranged at intervals along the axis of the second cooling pipe. When the air in the light box 21 flows through the second fins, the channels formed between the second fins can guide the air flow, making the air flow more disorderly and rapid, so that the hot air is more easily replaced by the cold air, further improving the heat dissipation efficiency of the second cooling element 42.

[0057] In other alternative embodiments, the second fins are square, and there are multiple second fins, and the multiple second fins are arranged at intervals around the circumference of the second cooling pipe.

[0058] On the other hand, an embodiment of the present utility model provides a PCB detection device, including a machine cover, a refrigeration device, and the optical detection device of the above - mentioned embodiment. The optical detection device is arranged inside the machine cover, and the refrigeration device is arranged outside the machine cover. The refrigeration device is used to provide a cooling medium to the first cooling element 41 and the second cooling element 42.

[0059] The hot air around the camera assembly 3 is diverted to the first cooling element 41 through the first diversion unit 43. The cooling medium in the first cooling pipe 411 can exchange heat with the surrounding air to achieve the cooling of the camera assembly 3. The cooling medium in the second cooling pipe can exchange heat with the air in the light box 21 to achieve the cooling of the light source assembly 2.

[0060] In one embodiment, a second diversion unit is provided on the hood. The second diversion unit is used to drive the convection of the air inside and outside the hood, and can effectively dissipate the heat generated inside the hood, further improving the heat dissipation efficiency of the camera assembly 3 and the light source assembly 2.

[0061] In one embodiment, the second diversion unit includes at least one second diversion member, which can achieve the convection of different regions inside the hood and the outside air, improving the heat dissipation effect inside the hood.

[0062] Among them, the second diversion member includes, but is not limited to, a fan, a diversion plate or a ventilator. Preferably, the second diversion member is a fan, which has good air guiding ability and does not occupy too much space in the hood.

[0063] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical detection device, characterized in that, It includes a support frame, a light source assembly, a camera assembly, and a cooling assembly. The light source assembly and the camera assembly are arranged on the support frame; The cooling assembly includes a first cooling element, a second cooling element, and a first flow guiding unit. The first cooling element is installed on the support frame, and the first flow guiding unit is used to guide the air around the camera assembly to the first cooling element for cooling; The second cooling element is arranged on the light source assembly and is used to cool the light source assembly.

2. The optical detection device according to claim 1, wherein The first cooling element includes a first cooling pipe, and the first cooling pipe is installed on the support frame. The first cooling pipe is used to connect a refrigeration device to introduce a cooling medium, thereby cooling the air around the first cooling element.

3. The optical detection device according to claim 2, wherein, The first cooling element further includes first fins, and the first fins are arranged on the outer peripheral surface of the first cooling pipe; The first fins extend spirally around the first cooling pipe; or; There are multiple first fins, and the multiple first fins are arranged at intervals along the axis of the first cooling pipe.

4. The optical detection device according to any one of claims 1-3, characterized in that, The first flow guiding unit includes a connecting member and multiple first flow guiding members. The connecting member is connected to the support frame, and the multiple first flow guiding members are arranged at intervals on the connecting member.

5. The optical detection device according to claim 1, characterized in that, The light source assembly includes a lamp box and a light source arranged in the lamp box. The lamp box includes a first end plate, a second end plate, and a surrounding plate. The first end plate and the second end plate are connected to opposite ends of the surrounding plate; The second cooling element is arranged inside the lamp box and is connected between the first end plate and the second end plate. Multiple air vents are arranged on the surrounding plate at intervals in sequence.

6. The optical detection device according to claim 5, characterized in that, There are multiple second cooling elements; The second cooling element includes a second cooling pipe, and the second cooling pipe is connected between the first end plate and the second end plate. The second cooling pipe is used to connect a refrigeration device to introduce a cooling medium, thereby cooling the light source assembly.

7. The optical detection device according to claim 6, characterized in that, The second cooling element further includes second fins, and the second fins are arranged on the outer peripheral surface of the second cooling pipe.

8. The optical detection device according to claim 7, characterized in that, The second fins extend spirally around the second cooling pipe; or; There are multiple second fins, and the multiple second fins are arranged at intervals along the axis of the second cooling pipe.

9. A PCB detection device, characterized in that, It includes a hood, a refrigeration device, and the optical detection device according to any one of claims 1-8. The optical detection device is arranged inside the hood, and the refrigeration device is arranged outside the hood; The refrigeration device is used to provide a cooling medium to the first cooling element and the second cooling element.

10. The PCB detection device according to claim 9, wherein, A second flow guiding unit is arranged on the hood, and the second flow guiding unit is used to drive the convection of the air inside and outside the hood.

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