Full-page foreign matter scanning device of printed circuit board

Abstract

The invention discloses a full-page foreign matter scanning device for a printed circuit board, and belongs to the technical field of printed circuit board detection, and the main points of the technical scheme are that a detection table is connected with a mounting rack, and the two sides of the mounting rack are provided with transportation devices; the scanning device comprises a mounting plate, a camera and a lighting lamp, the mounting plate is located at the outlet end of the detection table and connected with the mounting frame, and the camera and the lighting lamp are both connected with the mounting plate; the clamping device comprises a first clamping block and a second clamping block, the first clamping block and the second clamping block are both connected with the mounting frame, the first clamping block and the second clamping block are located on the two sides of the circuit board conveying direction respectively, a first clamping groove is formed in the first clamping block, a second clamping groove is formed in the second clamping block, and the circuit board is inserted into the first clamping groove and the second clamping groove at the same time to achieve clamping of the circuit board; the pushing device is used for pushing the circuit board to approach the output end of the detection table; and the rotating device is connected with the mounting frame and is used for driving the clamping device to rotate, so that the effect of efficiently and accurately completing comprehensive detection of the printed circuit board is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of printed circuit board detection, and in particular to a device for scanning foreign matter on the entire printed circuit board. Background Art

[0002] Printed circuit boards (PCBs) are one of the core components of modern electronic devices and are widely used in various high-tech products. With the rapid development of the electronic product market and the continuous improvement of technology, the quality requirements for PCBs are becoming increasingly stringent. In order to ensure the reliability and stability of the product, PCBs must be fully and carefully inspected, especially for various physical defects that may occur, such as poor solder joints, missing components, surface scratches, etc. Therefore, it is particularly important to develop efficient and accurate PCB inspection technology.

[0003] Among the existing PCB inspection methods, automated inspection equipment based on machine vision systems is usually used. These devices generally include transport devices, cameras, and lighting systems to transport the PCB to the inspection scanning position and collect images. Common transport devices are mostly belt transmission or roller transmission, which is used to transport the PCB into the inspection area. In addition, there are some manually operated inspection platforms, which are mainly used for small batch production and sample inspection. In either case, the purpose is to capture the details of the PCB surface through a high-precision camera in order to identify potential defects.

[0004] However, traditional transport devices often grab the edge of the PCB, which results in the inability to fully cover the entire PCB surface during the inspection process, especially the edge area. Since the edge area is prone to burrs, notches, scratches and other problems, if these problems are not discovered and handled in time, they will seriously affect the quality of the final product. Summary of the invention

[0005] In order to complete comprehensive inspection of a printed circuit board efficiently and accurately, the present invention provides a device for scanning foreign matter on the entire printed circuit board.

[0006] The present invention provides a printed circuit board whole-page foreign matter scanning device adopts the following technical solution: A device for scanning foreign matter on the entire printed circuit board, comprising: A testing platform connected to a mounting frame, with transport devices for transporting circuit boards provided on both sides of the mounting frame; A scanning device, comprising a mounting plate, a camera and a lighting, wherein the mounting plate is located at the exit end of the inspection table and is connected to the mounting frame, and the camera and the lighting are both connected to the mounting plate and are used to scan and inspect the circuit board; A clamping device, comprising a first clamping block and a second clamping block, wherein the first clamping block and the second clamping block are both connected to the mounting frame, and the first clamping block and the second clamping block are respectively located on both sides of the circuit board transportation direction and are centrally symmetrically arranged, the first clamping block is provided with a first clamping groove, and the second clamping block is provided with a second clamping groove, and when the circuit board is inserted into the first clamping groove and the second clamping groove at the same time, the circuit board is clamped; a pushing device, connected to the mounting frame, for pushing the circuit board clamped by the clamping device toward the output end of the testing station; and The rotating device is arranged between the clamping device and the mounting frame, and is used to drive the clamping device to rotate 180 degrees.

[0007] By adopting the above technical solution, during use, when it is necessary to scan the printed circuit board for foreign objects in the whole page, the circuit board is first placed on the transport device, and the transport device transports the circuit board to the inspection table. Subsequently, the first clamping block and the second clamping block of the clamping device clamp the circuit board from both sides respectively to ensure its stability. Next, the pushing device is started to push the circuit board clamped by the clamping device to the output end of the inspection table, so that the circuit board enters the inspection scanning position. At this time, the camera and the light in the scanning device work together to perform a comprehensive scanning and detection of the circuit board, and effectively identify possible foreign objects. Further, the rotating device drives the clamping device to rotate 180 degrees, and the positions of the second clamping block and the second clamping block are interchanged, maintaining the transportation route of the circuit board. The pushing device is used again to push the circuit board to the inspection scanning position of the camera and perform scanning and detection. This process can scan the initial position of the circuit board when it is initially clamped by the first clamping block and the second clamping block, thereby realizing a comprehensive and efficient scanning and detection of the circuit board, and improving the accuracy and reliability of the detection.

[0008] Preferably, in an initial state, the first clamping block and the second clamping block are staggered along a circuit board transportation direction.

[0009] By adopting the above technical solution, the problem of uneven force caused by symmetrical arrangement during the clamping process can be effectively avoided, thereby improving the clamping stability and reliability.

[0010] Preferably, the pushing device includes a plurality of support plates, a sliding block, a connecting rod, a pushing plate and a cylinder, the plurality of support plates are vertically arranged and parallel to each other, the support plates are connected to the mounting frame, a sliding groove is provided on the support plate, the sliding groove includes a first sliding part and a second sliding part, the first sliding part and the second sliding part are bent, the first sliding part and the second sliding part are distributed in sequence along the transportation direction of the circuit board, and the first sliding part is inclined downward from one end close to the second sliding part to the other end; the sliding block is provided in each of the sliding grooves, the sliding block is slidably connected to the support plate, the connecting rod is provided between the two support plates, and both ends of the connecting rod are connected to the sliding block, and the pushing plate is fixedly connected to the connecting rod; one end of the cylinder is hinged to the mounting frame, and the other end is hinged to the bottom end of the pushing plate, so as to drive the connecting rod to move, and when the sliding block moves on the second sliding part, the pushing plate can push the circuit board to move.

[0011] By adopting the above technical solution, during use, when the circuit board needs to be pushed from the input end to the output end of the test bench, the cylinder starts and drives the connecting rod and the push plate to move along the slide groove. First, the push plate slides on the first sliding part, and because this part is inclined, the push plate gradually rises; then, the push plate enters the second sliding part, at which time the push plate continues to move forward and gradually decreases in height, and finally the push plate stably pushes the circuit board toward the output end of the test bench along the curved path of the slide groove. This design ensures the stability of the circuit board during the entire pushing process.

[0012] Preferably, the rotating device includes a motor, a rotating shaft and a rotating plate, the motor is connected to the mounting frame, the rotating shaft is connected to the motor, the rotating plate is connected to the rotating shaft, and the first clamp block and the second clamp block are both fixedly connected to the rotating plate.

[0013] By adopting the above technical solution, the rotating device can drive the clamping device and the circuit board thereon to rotate accurately 180 degrees, ensuring that the circuit board can complete a full range of scanning inspections during the inspection process, thereby improving the comprehensiveness and accuracy of the inspection. The motor, as a power source, ensures the stability and reliability of the rotation process and reduces the false detection rate caused by mechanical failures. The design of the rotating plate enables the first clamping block and the second clamping block to always maintain synchronous movement during the rotation process, thereby avoiding the risk of the circuit board being offset or falling off during the rotation process.

[0014] Preferably, the first clamp block and the second clamp block are both connected to a reinforcement device, a plurality of movable grooves are opened on the rotating plate, and the reinforcement device includes a slide bar and a reinforcement plate, the slide bar is arranged in the movable groove and is slidably connected to the rotating plate; the reinforcement plate corresponding to the first clamp block is arranged in the first clamping groove, and the corresponding slide bar passes through the first clamp block and is connected to the reinforcement plate; the reinforcement plate corresponding to the second clamp block is arranged in the second clamping groove, and the corresponding slide bar passes through the second clamp block and is connected to the reinforcement plate; the rotating plate is connected to multiple sets of control devices, the slide bar is connected to the control device, and the control device can control whether the reinforcement plate abuts against the circuit board, and when the reinforcement plate abuts against the top of the circuit board, it is used to achieve reinforcement of the circuit board.

[0015] By adopting the above technical solution, the device can effectively reinforce the circuit board during the detection process. Specifically: the setting of the reinforcement device enables the first clamping block and the second clamping block to further enhance the clamping force through the sliding rod and the reinforcement plate when clamping the circuit board, thereby ensuring the stability of the circuit board during transportation and rotation. When the reinforcement plate abuts against the top of the circuit board, the possibility of the circuit board shaking or falling off during the detection process can be reduced, thereby ensuring the accuracy and reliability of the detection results. The control device can flexibly control the contact state between the reinforcement plate and the circuit board, reduce unnecessary interference, and improve the flexibility and safety of operation.

[0016] Preferably, the control device includes a control component and a movable component, the control component is connected to the mounting frame, each two groups of the control components are symmetrically arranged about the axis center of the rotating shaft, the movable component is connected to the rotating plate, the sliding rod is connected to the movable component, and in the initial state, the movable component is connected to the control component, which can enable the reinforcement plate to be separated from the circuit board.

[0017] By adopting the above technical solution, the control device can ensure that the slide bar is connected to the movable component in the initial state, so that the reinforcement plate is separated from the circuit board, and when the circuit board enters the clamping device or the pushing device pushes the circuit board, unnecessary friction and damage between the reinforcement plate and the circuit board are reduced. At the same time, each two groups of control components are symmetrically arranged about the axis center of the rotating shaft. After the first clamp block and the second clamp block exchange positions, the movable component can still be connected to the control component, which effectively avoids interference with the circuit board again. When the circuit board needs to be reinforced, the reinforcement plate can be abutted against the circuit board through simple operations, which improves the safety and reliability of the clamping and scanning process.

[0018] Preferably, the control assembly comprises a push rod and a spring, the push rod is arranged above the rotating block, one end of the spring is fixedly connected to the push rod, and the other end is fixedly connected to the mounting plate; The rotating plate is provided with an active cavity, the movable component is arranged in the active cavity, the movable component includes a gear, a first rack, a second rack and a lower pressure block, the gear, the first rack and the second rack are all arranged in the active cavity, the gear is rotatably connected with the rotating plate, the first rack and the second rack are respectively arranged on both sides of the gear, and both are meshed with the gear, the movable groove is communicated with the active cavity, the sliding rod extends into the active cavity and is connected to the first rack, the top of the rotating plate is provided with a socket connecting the active cavity and the outside, the lower pressure block is arranged in the socket, and the bottom of the lower pressure block is connected with the second rack; When the pressing rod is inserted into the insertion hole and abuts against the pressing block, the reinforcing plate can be separated from the circuit board; when the pressing rod is separated from the insertion hole, the reinforcing plate abuts against the circuit board.

[0019] By adopting the above technical solution, when it is necessary to release the circuit board from the clamping device, the pressing rod and spring of the control assembly are inserted into the socket and abut against the pressing block. At this time, the pressing block pushes the second rack to move downward, and the second rack drives the gear to rotate, thereby causing the first rack to move upward, thereby driving the slide bar and the reinforcement plate thereon to separate from the circuit board, thereby achieving a quick release of the circuit board. On the contrary, when it is necessary to tighten the circuit board, the rotating plate rotates to separate the pressing rod from the socket, and the pressing block no longer applies pressure to the second rack. The first rack moves downward under the action of gravity, driving the slide bar and the reinforcement plate to re-abut against the circuit board, ensuring that the circuit board is firmly clamped, thereby improving the convenience and stability of the device.

[0020] Preferably, the jack is expanded at one end close to the pressing rod.

[0021] By adopting the above technical solution, the expansion setting of one end of the socket close to the push-down rod can reduce the friction when the push-down rod is inserted into the socket, making it easier for the push-down rod to enter the socket, thereby improving the convenience and reliability of operation.

[0022] Preferably, a plurality of first conveying rollers are arranged in the first clamping groove, and the plurality of first conveying rollers are arranged side by side and are rotatably connected to the first clamping block. The axis of the first conveying roller is perpendicular to the transportation direction of the circuit board. When the first clamping block clamps the circuit board, the circuit board abuts against the first conveying roller.

[0023] By adopting the above technical solution, the multiple first conveying rollers in the first clamping groove can ensure that the circuit board maintains stable transmission during the clamping process, avoiding damage or position displacement of the circuit board due to excessive friction, thereby improving the accuracy and reliability of scanning detection.

[0024] Preferably, a plurality of second conveying rollers are arranged in the second clamping groove, and the plurality of second conveying rollers are arranged side by side and are rotatably connected to the second clamping block. The axis of the second conveying roller is perpendicular to the transportation direction of the circuit board. When the second clamping block clamps the circuit board, the circuit board abuts against the second conveying roller.

[0025] By adopting the above technical solution, the multiple second conveying rollers in the second clamping groove can effectively support the circuit board and reduce friction, thereby ensuring that the circuit board is smoothly transmitted during the clamping process and avoiding scratches or damage.

[0026] In summary, the present invention has the following beneficial effects: During use, when it is necessary to scan the printed circuit board for foreign objects in the entire page, the circuit board is first placed on the transport device, and the transport device transports the circuit board to the inspection table. Subsequently, the first clamping block and the second clamping block of the clamping device clamp the circuit board from both sides respectively to ensure its stability. Next, the pushing device is started to push the circuit board clamped by the clamping device toward the output end of the inspection table, so that the circuit board enters the inspection scanning position. At this time, the camera and the light in the scanning device work together to perform a comprehensive scan and detection of the circuit board, and effectively identify possible foreign objects. Further, the rotating device drives the clamping device to rotate 180 degrees, and the positions of the second clamping block and the second clamping block are interchanged, maintaining the transportation route of the circuit board. The pushing device is used again to push the circuit board to the inspection scanning position of the camera and perform scanning and detection. This process can scan the initial position of the circuit board when it is initially clamped by the first clamping block and the second clamping block, thereby realizing a comprehensive and efficient scanning and detection of the circuit board, and improving the accuracy and reliability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The invention discloses a schematic diagram of the overall structure of a device for scanning foreign matter on a printed circuit board.

[0028] Figure 2 It is a structural schematic diagram of the transport device.

[0029] Figure 3 Schematic diagram of the structure of the scanning device.

[0030] Figure 4 It is a structural schematic diagram of the clamping device.

[0031] Figure 5 Schematic diagram of the position of the clamping device.

[0032] Figure 6 It is a structural schematic diagram of the rotating device.

[0033] Figure 7 yes Figure 6 Cross-sectional view along AA direction.

[0034] Figure 8 yes Figure 6 Cross-sectional view along direction BB.

[0035] Fig. 9 It is a structural schematic diagram of the propulsion device.

[0036] Fig.10 It is a structural diagram of the chute.

[0037] Description of reference numerals: 1. Inspection table; 11. Mounting frame; 12. Pallet; 2. Transport device; 21. Transport frame; 22. Transport roller; 23. Transport belt; 24. Transport motor; 3. Scanning device; 31. Mounting plate; 32. Camera; 33. Light; 4. Clamping device; 41. First clamping block; 411. First clamping groove; 412. First conveying roller; 42. Second clamping block; 421. Second clamping groove; 422. Second conveying roller; 5. Rotating device; 51. Rotating motor; 52. Rotating Axis; 53, rotating plate; 531, moving groove; 532, movable cavity; 533, jack; 6, reinforcement device; 61, slide rod; 62, reinforcement plate; 7, control device; 71, push rod; 72, spring; 73, first rack; 74, gear; 75, second rack; 76, push block; 8, pushing device; 81, support plate; 82, slide block; 83, connecting rod; 84, pushing plate; 85, cylinder; 9, slide groove; 91, first sliding part; 92, second sliding part. DETAILED DESCRIPTION

[0038] In order to enable technicians in this field to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0039] In the description of the embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0040] In the description of the embodiments of the present application, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0041] A device for scanning foreign matter on the entire printed circuit board, referring to Figure 1 , Figure 2 and Figure 3 , including a testing platform 1, a scanning device 3, a clamping device 4, a pushing device 8 and a rotating device 5. The testing platform 1 is fixedly connected to a mounting frame 11, and a transport device 2 for transporting a circuit board is provided on both sides of the mounting frame 11. The scanning device 3 is used to scan and detect foreign objects on the circuit board.

[0042] Reference Figure 1 and Figure 4 The clamping device 4 includes a first clamping block 41 and a second clamping block 42. The first clamping block 41 and the second clamping block 42 are both connected to the mounting frame 11. The first clamping block 41 and the second clamping block 42 are respectively located on both sides of the circuit board transportation direction and are centrally symmetrically arranged. The first clamping block 41 is provided with a first clamping groove 411, and the second clamping block 42 is provided with a second clamping groove 421. When the circuit board is inserted into the first clamping groove 411 and the second clamping groove 421 at the same time, it is used to clamp the circuit board. The pushing device 8 is connected to the mounting frame 11, and is used to push the circuit board clamped by the clamping device 4 to approach the output end of the detection table 1. The rotating device 5 is arranged between the clamping device 4 and the mounting frame 11, and is used to drive the clamping device 4 to rotate horizontally 180 degrees.

[0043] During use, when it is necessary to scan the printed circuit board for foreign objects throughout the board, the circuit board is first placed on the transport device 2, and the transport device 2 transports the circuit board to the detection table 1. Subsequently, the first clamping block 41 and the second clamping block 42 of the clamping device 4 clamp the circuit board from both sides respectively to ensure its stability. Next, the pushing device 8 is started to push the circuit board clamped by the clamping device 4 to approach the output end of the detection table 1, so that the circuit board enters the detection scanning position. At this time, the scanning device 3 performs a comprehensive scanning and detection on the circuit board to effectively identify possible foreign objects. Further, the rotating device 5 drives the clamping device 4 to rotate 180 degrees, and the positions of the second clamping block 42 and the second clamping block 42 are interchanged, maintaining the transportation route of the circuit board. The pushing device 8 is used again to push the circuit board to the detection scanning position of the scanning device 3 and perform scanning and detection. This process can scan the initial position of the circuit board when it is initially clamped by the first clamping block 41 and the second clamping block 42, thereby realizing a comprehensive and efficient scanning and detection of the circuit board, and improving the accuracy and reliability of the detection.

[0044] Reference Figure 2 The transport device 2 includes a transport frame 21, a transport roller 22, a transport belt 23 and a transport motor 24. Two transport frames 21 are symmetrically arranged, and the two transport frames 21 form a transport channel, which can grab the two edges of the circuit board for transportation.

[0045] The two transport racks 21 are both connected to a transport structure for transporting circuit boards, and each transport structure is composed of a plurality of transport rollers 22 and a transport belt 23, wherein the number of transport rollers 22 can be set according to actual conditions. A plurality of transport rollers 22 in a group of transport structures are arranged in parallel, and are all rotatably connected to the corresponding transport racks 21. The transport belt 23 is sleeved on the plurality of transport rollers 22 in the same group, and abuts against the plurality of transport rollers 22. Two transport motors 24 are provided, and the two transport motors 24 correspond to the two transport racks 21 one by one. The transport motor 24 is fixedly connected to any transport roller 22 in the corresponding transport structure.

[0046] When the transport motor 24 is started, the transport roller 22 can drive the transport belt 23 to move, thereby enabling the transport belt 23 to transport the circuit board.

[0047] Reference Figure 1 and Figure 2 , the testing platform 1 is provided with pallets 12 at both ends along the circuit board transportation direction. Each transport device 2 is provided with two pallets 12, and the two transport racks 21 in each group correspond to the two pallets 12. The pallets 12 are fixedly connected to the corresponding transport racks 21, and the top surface of the pallets 12 is flush with the top of the corresponding transport belt 23.

[0048] When the circuit board is separated from the transport device 2 or is about to enter the transport device 2 , the support plate 12 can play a supporting role.

[0049] Reference Figure 1 The clamping device 4 and the scanning device 3 are arranged in sequence along the transportation direction of the circuit board.

[0050] Reference Figure 1 and Figure 3 The scanning device 3 includes a mounting plate 31, a camera 32 and a lighting fixture 33. The mounting plate 31 is located at the exit end of the detection platform 1 and is fixedly connected to the mounting frame 11. The camera 32 is fixedly connected to the bottom of the mounting plate 31. A plurality of lighting fixtures 33 are provided and evenly distributed around the camera 32, and the lighting fixtures 33 are fixedly connected to the bottom of the mounting plate 31.

[0051] Reference Figure 5 The first clamping block 41 and the second clamping block 42 are staggered along the transportation direction of the circuit board.

[0052] It effectively avoids the problem of uneven force caused by symmetrical arrangement during clamping, thereby improving clamping stability and reliability.

[0053] Reference Figure 4 A first conveying roller 412 is disposed in the first clamping groove 411. A plurality of first conveying rollers 412 are disposed horizontally, and the axis of the first conveying roller 412 is perpendicular to the transport direction of the circuit board. The plurality of first conveying rollers 412 are disposed side by side and are all rotatably connected to the first clamping block 41. When the first clamping block 41 clamps the circuit board, the circuit board abuts against the first conveying roller 412.

[0054] The plurality of first conveying rollers 412 in the first clamping groove 411 can ensure that the circuit board is stably transported during the clamping process, avoiding damage or positional displacement of the circuit board due to excessive friction, thereby improving the accuracy and reliability of scanning detection.

[0055] Reference Figure 4 A second conveying roller 422 is disposed in the second clamping groove 421. A plurality of second conveying rollers 422 are disposed horizontally, and the axis of the second conveying roller 422 is perpendicular to the transport direction of the circuit board. The plurality of second conveying rollers 422 are disposed side by side and are all rotatably connected to the second clamping block 42. When the second clamping block 42 clamps the circuit board, the circuit board abuts against the second conveying roller 422.

[0056] The plurality of second conveying rollers 422 in the second clamping groove 421 can effectively support the circuit board and reduce friction, thereby ensuring that the circuit board is smoothly conveyed during the clamping process and avoiding scratches or damages.

[0057] Reference Figure 6The rotating device 5 includes a rotating motor 51, a rotating shaft 52 and a rotating plate 53. The rotating motor 51 is fixedly connected to the mounting frame 11. The driving shaft of the rotating motor 51 passes through the mounting frame 11 and is fixedly connected to the rotating shaft 52. The rotating plate 53 is fixedly connected to the rotating shaft 52. The first clamping block 41 and the second clamping block 42 are both fixedly connected to the rotating plate 53.

[0058] The rotating device 5 can drive the clamping device 4 and the circuit board thereon to rotate accurately by 180 degrees, ensuring that the circuit board can complete a full range of scanning inspections during the inspection process, thereby improving the comprehensiveness and accuracy of the inspection.

[0059] Reference Figure 7 and Figure 8 The first clamping block 41 and the second clamping block 42 are both connected with a set of reinforcing devices 6, and the reinforcing devices 6 include a slide bar 61 and a reinforcing plate 62. A moving groove 531 is provided on the rotating plate 53, and two moving grooves 531 are provided, and the two moving grooves 531 correspond to the two reinforcing devices 6 one by one.

[0060] Reference Figure 7 and Figure 8 The slide bar 61 is vertically arranged, and the slide bar 61 is arranged in the moving groove 531 and is slidably connected to the rotating plate 53. The reinforcement plate 62 is horizontally arranged, and the reinforcement plate 62 corresponding to the first clamping block 41 is horizontally arranged in the first clamping groove 411, and the slide bar 61 passes through the first clamping block 41 and is fixedly connected to the reinforcement plate 62. The reinforcement plate 62 corresponding to the second clamping block 42 is horizontally arranged in the second clamping groove 421, and the slide bar 61 passes through the second clamping block 42 and is fixedly connected to the reinforcement plate 62.

[0061] The reinforcement device 6 is provided so that when the first clamping block 41 and the second clamping block 42 clamp the circuit board, the clamping force can be further enhanced through the slide bar 61 and the reinforcement plate 62, thereby ensuring the stability of the circuit board during transportation and rotation.

[0062] Reference Figure 7 The rotating plate 53 is connected to a control device 7, which is provided with two groups, and the control device 7 includes a control component and a movable component. Among them, the control component is connected to the mounting frame 11, and the movable component is connected to the rotating plate 53 and rotates with the rotating plate 53. The movable components correspond to the reinforcement device 6 one by one, and each group of movable components is provided with a corresponding set of control components.

[0063] The control device 7 can ensure that the slide bar 61 is connected to the movable assembly in the initial state, so that the reinforcing plate 62 is separated from the circuit board, and when the circuit board enters the clamping device 4 or the pushing device 8 pushes the circuit board, unnecessary friction and damage between the reinforcing plate 62 and the circuit board are reduced. At the same time, each two sets of control assemblies are symmetrically arranged about the axis center of the rotating shaft 52. After the first clamp block 41 and the second clamp block 42 exchange positions, the movable assembly can still be connected to the control assembly, which effectively avoids interference with the circuit board again.

[0064] Reference Figure 7 The control assembly includes a push rod 71 and a spring 72. The push rod 71 is vertically arranged between the rotating plate 53 and the mounting frame 11, and the push rod 71 is located above the rotating plate 53. The spring 72 is vertically arranged, and one end of the spring 72 is fixedly connected to the push rod 71, and the other end is fixedly connected to the mounting frame 11.

[0065] Reference Figure 7 and Figure 8 The rotating plate 53 is provided with an active cavity 532 and a socket 533. There are two active cavities 532 and two sockets 533. The two active cavities 532 correspond to the two control devices 7 one by one, and the two sockets 533 correspond to the two control devices 7 one by one. The socket 533 is provided at the top of the rotating plate 53. The socket 533 connects the corresponding active cavity 532 with the outside world. The top of the socket 533 is expanded. The two sockets 533 are symmetrically arranged about the axis center of the rotating shaft 52.

[0066] Reference Figure 7 and Figure 8 The movable assembly includes a first rack 73, a gear 74, a second rack 75 and a lower pressing block 76. The first rack 73, the gear 74 and the second rack 75 are all arranged in the movable cavity 532, the gear 74 is rotatably connected to the rotating plate 53, the first rack 73 and the second rack 75 are respectively arranged on both sides of the gear 74, and the first rack 73 and the second rack 75 are both meshed with the gear 74. The movable groove 531 is connected to the bottom of the movable cavity 532, and the top end of the sliding rod 61 extends into the movable cavity 532 and is fixedly connected to the first rack 73.

[0067] Reference Figure 7 and Figure 8 The lower pressing block 76 is disposed in the insertion hole 533, and the bottom of the lower pressing block 76 is fixedly connected to the second rack 75. When the lower pressing rod 71 extends into the insertion hole 533 and abuts against the lower pressing block 76, the lower pressing block 76 drives the second rack 75 to move downward, so that the reinforcing plate 62 is separated from the circuit board. When the lower pressing rod 71 is separated from the insertion hole 533, the reinforcing plate 62 abuts against the circuit board.

[0068] When the circuit board needs to be released from the clamping device 4, the pressing rod 71 and the spring 72 of the control assembly are inserted into the insertion hole 533 and abut against the pressing block 76. At this time, the pressing block 76 pushes the second rack 75 to move downward, and the second rack 75 drives the gear 74 to rotate, thereby causing the first rack 73 to move upward, thereby driving the slide bar 61 and the reinforcing plate 62 thereon to separate from the circuit board, thereby realizing the quick release of the circuit board.

[0069] On the contrary, when the circuit board needs to be tightened, the rotating plate 53 rotates to disengage the pressing rod 71 from the socket 533. At this time, the pressing block 76 no longer applies pressure to the second rack 75. The first rack 73 moves downward under the action of gravity, driving the sliding rod 61 and the reinforcing plate 62 to re-engage with the circuit board, ensuring that the circuit board is firmly clamped, thereby improving the operating convenience and stability of the equipment.

[0070] Reference Figure 1 , Fig. 9 and Fig.10 The pushing device 8 includes a support plate 81, a sliding block 82, a connecting rod 83, a pushing plate 84 and a cylinder 85. Two support plates 81 are vertically arranged, and the two support plates 81 are parallel to each other and are fixedly connected to the mounting frame 11. A slide groove 9 is provided on the side walls of the two support plates 81 close to each other, and the slide groove 9 includes a first sliding part 91 and a second sliding part 92. The first sliding part 91 is inclined, and the second sliding part 92 is horizontally arranged. The first sliding part 91 is inclined downward from one end close to the second sliding part 92 to the other end. The first sliding part 91 and the second sliding part 92 are distributed in sequence along the transportation direction of the circuit board.

[0071] Reference Fig. 9 and Fig.10 The sliding block 82 is provided with arc surfaces at both ends along the length direction of the slide slot 9. Two sliding blocks 82 are provided, and they correspond to the two slide slots 9 one by one. The sliding block 82 is provided in the corresponding slide slot 9 and is slidably connected to the corresponding support plate 81. The connecting rod 83 is provided between the two sliding blocks 82 and is fixedly connected to both sliding blocks 82.

[0072] Reference Fig. 9 and Fig.10 The push plate 84 is fixedly connected to the middle section of the connecting rod 83, one end of the cylinder 85 is hinged to the mounting frame 11, and the other end is hinged to the connecting rod 83. When the sliding block 82 is located at the second sliding portion 92, the push plate 84 can push the circuit board to move.

[0073] During use, when the circuit board needs to be pushed from the input end to the output end of the test bench 1 , the cylinder 85 starts and drives the push plate 84 to move along the slide groove 9 , so that the push plate 84 stably pushes the circuit board toward the output end of the test bench 1 .

[0074] The use principle of the present application is as follows: During use, when it is necessary to perform a full-page foreign body scan on the printed circuit board, first place the circuit board on the transport device 2, and the transport device 2 transports the circuit board to the detection table 1. Subsequently, the first clamping block 41 and the second clamping block 42 of the clamping device 4 clamp the circuit board from both sides respectively to ensure its stability. Next, the pushing device 8 is started to push the circuit board clamped by the clamping device 4 toward the output end of the detection table 1, so that the circuit board enters the detection scanning position. At this time, the camera 32 and the light 33 in the scanning device 3 work together to perform a comprehensive scan and detection of the circuit board, and effectively identify possible foreign bodies.

[0075] Furthermore, the rotating device 5 drives the clamping device 4 to rotate 180 degrees, and the positions of the second clamping block 42 and the second clamping block 42 are interchanged, thereby maintaining the transportation route of the circuit board. The pushing device 8 is used again to push the circuit board to the detection scanning position of the camera 32 and perform scanning detection. This process can scan the initial position of the circuit board when it is initially clamped by the first clamping block 41 and the second clamping block 42, thereby achieving comprehensive and efficient scanning detection of the circuit board, and improving the accuracy and reliability of the detection. After the detection is completed, the pushing plate 84 can push the circuit board to the transportation device 2 at the exit end of the detection table 1.

[0076] Among them, in the initial position, the control component is connected to the movable component, and the reinforcement plate 62 of the reinforcement device 6 is separated from the circuit board. During the rotation of the rotating device 5, the rotating plate 53 drives the first clamping block 41, the second clamping block 42, the two groups of reinforcement devices 6 and the two groups of movable components to rotate, while the position of the control component remains unchanged. Therefore, the rotating plate 53 causes the lower pressure rod 71 of the control component to be separated from the lower pressure block 76, thereby causing the reinforcement plate 62 to abut against the circuit board to enhance the clamping force. After the rotating block rotates 180 degrees, the control component abuts against the movable component again, and the reinforcement plate 62 is separated from the circuit board again. When the circuit board enters the clamping device 4 or the pushing device 8 pushes the circuit board, unnecessary friction and damage between the reinforcement plate 62 and the circuit board are reduced.

[0077] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for scanning foreign matter on the entire printed circuit board, characterized in that: include: A testing platform (1) is connected to a mounting frame (11), and both sides of the mounting frame (11) are provided with transport devices (2) for transporting circuit boards; A scanning device (3), comprising a mounting plate (31), a camera (32) and a lighting fixture (33), wherein the mounting plate (31) is located at the exit end of the detection platform (1) and is connected to the mounting frame (11), and the camera (32) and the lighting fixture (33) are both connected to the mounting plate (31) and are used to scan and detect the circuit board; The clamping device (4) comprises a first clamping block (41) and a second clamping block (42), wherein the first clamping block (41) and the second clamping block (42) are both connected to the mounting frame (11), the first clamping block (41) and the second clamping block (42) are respectively located on both sides of the circuit board transportation direction and are centrally symmetrically arranged, the first clamping block (41) is provided with a first clamping groove (411), and the second clamping block (42) is provided with a second clamping groove (421), and when the circuit board is inserted into the first clamping groove (411) and the second clamping groove (421) at the same time, the circuit board is clamped; a pushing device (8), connected to the mounting frame (11), and used for pushing the circuit board clamped by the clamping device (4) toward the output end of the testing platform (1); and The rotating device (5) is arranged between the clamping device (4) and the mounting frame (11), and is used to drive the clamping device (4) to rotate 180 degrees.

2. The device for scanning foreign matter on the entire printed circuit board according to claim 1, characterized in that: In an initial state, the first clamping block (41) and the second clamping block (42) are arranged in a staggered manner along a circuit board transportation direction.

3. A printed circuit board whole-page foreign matter scanning device according to claim 1 or 2, characterized in that: The pushing device (8) comprises a plurality of supporting plates (81), sliding blocks (82), connecting rods (83), pushing plates (84) and cylinders (85); the plurality of supporting plates (81) are vertically arranged and parallel to each other; the supporting plates (81) are connected to the mounting frame (11); a slide groove (9) is provided on the supporting plate (81); the slide groove (9) comprises a first sliding portion (91) and a second sliding portion (92); the first sliding portion (91) and the second sliding portion (92) are bent and arranged; the first sliding portion (91) and the second sliding portion (92) are sequentially distributed along the transportation direction of the circuit board; the first sliding portion (91) is provided with a portion close to the second sliding portion (92); The sliding block (82) is arranged obliquely downward from one end to the other end; each of the sliding grooves (9) is provided with the sliding block (82), the sliding block (82) is slidably connected to the support plate (81), the connecting rod (83) is arranged between the two support plates (81), and both ends of the connecting rod (83) are connected to the sliding block (82), and the pushing plate (84) is fixedly connected to the connecting rod (83); one end of the cylinder (85) is hinged to the mounting frame (11), and the other end is hinged to the bottom end of the pushing plate (84), which is used to drive the connecting rod (83) to move, and when the sliding block (82) moves on the second sliding part (92), the pushing plate (84) can push the circuit board to move.

4. A printed circuit board whole-page foreign matter scanning device according to claim 1 or 2, characterized in that: The rotating device (5) comprises a rotating motor (51), a rotating shaft (52) and a rotating plate (53); the rotating motor (51) is connected to the mounting frame (11); the rotating shaft (52) is connected to the rotating motor (51); the rotating plate (53) is connected to the rotating shaft (52); and the first clamping block (41) and the second clamping block (42) are both fixedly connected to the rotating plate (53).

5. The device for scanning foreign matter on the entire printed circuit board according to claim 4, characterized in that: The first clamping block (41) and the second clamping block (42) are both connected to a reinforcing device (6); a plurality of movable grooves (531) are provided on the rotating plate (53); the reinforcing device (6) comprises a sliding rod (61) and a reinforcing plate (62); the sliding rod (61) is arranged in the movable groove (531) and is slidably connected to the rotating plate (53); the reinforcing plate (62) corresponding to the first clamping block (41) is arranged in the first clamping groove (411); the corresponding sliding rod (61) passes through the first clamping block (41) and is connected to the reinforcing plate (62); The reinforcing plate (62) is connected with the second clamping block (42); the reinforcing plate (62) corresponding to the second clamping block (42) is arranged in the second clamping groove (421), and the corresponding sliding rod (61) passes through the second clamping block (42) and is connected with the reinforcing plate (62); the rotating plate (53) is connected with a plurality of control devices (7), the sliding rod (61) is connected with the control device (7), and the control device (7) can control whether the reinforcing plate (62) abuts against the circuit board, and when the reinforcing plate (62) abuts against the top of the circuit board, it is used to reinforce the circuit board.

6. The device for scanning the entire printed circuit board for foreign matter according to claim 5, characterized in that: The control device (7) comprises a control component and a movable component, wherein the control component is connected to the mounting frame (11), and each two groups of the control components are symmetrically arranged about the axis center of the rotating shaft (52), the movable component is connected to the rotating plate (53), and the sliding rod (61) is connected to the movable component. In an initial state, the movable component is connected to the control component, so that the reinforcing plate (62) can be separated from the circuit board.

7. The device for scanning foreign matter on the entire printed circuit board according to claim 6, characterized in that: The control assembly comprises a push rod (71) and a spring (72), wherein the push rod (71) is arranged above the rotating block, and one end of the spring (72) is fixedly connected to the push rod (71) and the other end is fixedly connected to the mounting plate (31); The rotating plate (53) is provided with an active cavity (532), the active component is arranged in the active cavity (532), the active component comprises a gear (74), a first rack (73), a second rack (75) and a lower pressing block (76), the gear (74), the first rack (73) and the second rack (75) are all arranged in the active cavity (532), the gear (74) is rotatably connected to the rotating plate (53), the first rack (73) and the second rack (75) are respectively arranged On both sides of the gear (74), and both are meshed with the gear (74), the movable groove (531) is connected with the movable cavity (532), the sliding rod (61) extends into the movable cavity (532) and is connected with the first rack (73), the top of the rotating plate (53) is provided with a plug hole (533) connecting the movable cavity (532) and the outside, the lower pressing block (76) is arranged in the plug hole (533), and the bottom of the lower pressing block (76) is connected with the second rack (75); When the lower pressing rod (71) is inserted into the insertion hole (533) and abuts against the lower pressing block (76), the reinforcing plate (62) can be separated from the circuit board; when the lower pressing rod (71) is separated from the insertion hole (533), the reinforcing plate (62) abuts against the circuit board.

8. The device for scanning foreign matter on the entire printed circuit board according to claim 7, characterized in that: The insertion hole (533) is expanded at one end close to the pressing rod (71).

9. The device for scanning foreign matter on the entire printed circuit board according to claim 1, characterized in that: A plurality of first conveying rollers (412) are arranged in the first clamping groove (411); the plurality of first conveying rollers (412) are arranged side by side and are rotatably connected to the first clamping block (41); the axes of the first conveying rollers (412) are perpendicular to the transport direction of the circuit board; when the first clamping block (41) clamps the circuit board, the circuit board abuts against the first conveying rollers (412).

10. The device for scanning foreign matter on the entire printed circuit board according to claim 1, characterized in that: A plurality of second conveying rollers (422) are arranged in the second clamping groove (421); the plurality of second conveying rollers (422) are arranged side by side and are rotatably connected to the second clamping block (42); the axes of the second conveying rollers (422) are perpendicular to the transport direction of the circuit board; when the second clamping block (42) clamps the circuit board, the circuit board abuts against the second conveying rollers (422).

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