Detection devices and circuit board detection equipment

Abstract

This application discloses a detection device and a circuit board detection apparatus. The detection device includes a receiving component, a first detection component, and a protective component. The receiving component is used to receive radiation from a radiation source. The first detection component has a first detection element. The protective component includes a first protective element and a driving component. The first protective element is connected to the driving component. The driving component is configured to drive the first protective element to move along a linear first direction to switch between a first position and a second position. In the first position, the first protective element at least blocks the first detection element, and in the second position, at least the first detection element is exposed. In this embodiment, the first protective element switches by moving along a linear first direction, occupying a relatively small space, thereby helping to reduce the size of the detection device.

Description

Technical Field

[0001] This application relates to the field of X-ray detection technology, and in particular to a detection device and a detection equipment for circuit boards. Background Technology

[0002] In the manufacturing process of products such as circuit boards, there are inspection steps. One inspection process involves using an X-ray source to emit X-rays onto the circuit board, and then receiving the X-rays through a detector head of a detection device, thereby achieving non-destructive testing of the circuit board. Before performing non-destructive testing, it is also necessary to use a ranging instrument within the detection device to determine the distance between the detector head and the circuit board to be tested.

[0003] In related technologies, the detection device is equipped with a protective plate to prevent the ranging instrument from being damaged by long-term exposure to X-rays. However, the protective plate in these technologies requires a large space to move, which increases the size of the detection device. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the main objective of this application is to provide a detection device and a detection equipment for a circuit board using the detection device.

[0005] To achieve the above objectives, this application adopts the following technical solution.

[0006] According to a first aspect of the embodiments of this application, a detection device is provided, comprising: A receiving component for receiving radiation from a radiation source; A first detection component is used to acquire first information, and the first detection component has a first detection element; A protective component includes a first protective element and a driving element, wherein the first protective element is connected to the driving element; The driving member is configured to drive the first protective member to move along a linear first direction to switch between a first position and a second position. When the first protective member is in the first position, it at least blocks the first detection member. When the first protective member is in the second position, at least the first detection member is exposed.

[0007] The detection device according to the embodiments of this application has at least the following beneficial effects: In this embodiment, the first protective component can move between a first position and a second position, thus avoiding obstruction when the first detection component acquires the first information and protecting the first detection component when the receiving component receives radiation, thereby improving the service life of the first detection component. Furthermore, in this embodiment, the first protective component switches by moving along a linear first direction, occupying relatively little space, which helps to reduce the size of the detection device.

[0008] Optionally, the detection device further includes a second detection component, which is used to acquire second information that is different from the first information, and the second detection component has a second detection element; Wherein, when the first protective component is in the first position, it at least covers the first detection component and the second detection component, and when the first protective component is in the second position, at least the first detection component and the second detection component are exposed.

[0009] Optionally, along the first direction, the first detection component and the second detection component are both located on the same side of the receiving component, and the first detection component and the second detection component are distributed along the second direction, which intersects with the first direction; Alternatively, along the second direction, the first detection component and the second detection component are both located on the same side of the receiving component, the first detection component and the second detection component are distributed along the first direction, and the second direction intersects with the first direction.

[0010] Optionally, the receiving component and the first detection component are distributed along the first direction, and the first protective member includes a first protective part and a first connecting part connected to the first protective part. When the first protective member is in the first position, it at least blocks the first detection component through the first protective part. Wherein, along the direction from the first detection component to the receiving component, the first connecting portion has an extension that extends relative to the first protective portion, and the driving member is connected to the extension.

[0011] Optionally, the protective component may also include fasteners; The first protective member has a first mounting groove extending along the first direction, and the first protective member and the driving member are connected to the fastener through the first mounting groove; Alternatively, the first protective member has a second mounting groove extending along a second direction, and the first protective member and the drive member are connected to the fastener through the second mounting groove, the second direction intersecting the first direction.

[0012] Optionally, the receiving assembly includes a receiver and a connector connected to the receiver, the receiver having a receiving portion for receiving radiation, and the protective assembly further includes a second protective member that at least blocks the connector and at least exposes the receiving portion.

[0013] Optionally, the receiving part is disposed on the first side of the receiving component, and the connector is connected to the second side of the receiving component, wherein the second side is disposed adjacent to the first side; The second protective member includes a second protective portion and a second connecting portion connected to the second protective portion. The second connecting portion extends along the second side. The second protective portion is bent relative to the second connecting portion to extend along the first side. The second connecting portion, the second protective portion, and the receiving member together define a receiving cavity. The connector is located within the receiving cavity.

[0014] Optionally, the second protective component includes a protective layer and a reinforcing layer stacked together, wherein the protective layer is made of lead and the hardness of the reinforcing layer is greater than that of the protective layer.

[0015] Optionally, the driving component includes a driving body and a driving shaft connected to the driving body, the driving shaft being capable of extending and retracting relative to the driving body in the first direction, and the first protective component being connected to the driving shaft; Alternatively, the drive member includes a primary extending along the first direction and a secondary capable of moving relative to the primary along the first direction, the first protective member being connected to the secondary.

[0016] Optionally, the first protective member includes a first protective part, and when the first protective member is in the first position, the first protective part at least blocks the first detection member along the irradiation direction of the radiation. The first protective component further includes a third protective part, which is disposed circumferentially along the first protective part and extends toward the first detection component. The third protective part is used to at least block the first detection component from the side.

[0017] Optionally, the first protective member includes a first protective part, and when the first protective member is in the first position, the first protective part at least blocks the first detection member along the irradiation direction of the radiation. The first protective part has a clearance groove, and when the first protective part is in the second position, the first detection part passes through the clearance groove to be exposed.

[0018] Optionally, the first protective part includes a first side and a second side disposed opposite to each other. The first side and the second side are arranged sequentially along the moving direction of the first protective member from the first position to the second position, and the first side is provided with the clearance groove.

[0019] According to a second aspect of the embodiments of this application, a circuit board detection device is provided, comprising: A support platform is used to support the workpiece to be tested. A radiation source for emitting radiation onto the workpiece to be tested, which is placed on the support platform; The detection device, wherein the receiving component is used to receive rays that penetrate the workpiece to be tested; A first driving device, connected to the detection device, is used to drive the detection device to move relative to the support platform; The second driving device is connected to the radiation source and is used to drive the radiation source to move relative to the support platform.

[0020] Optionally, the first driving device is used to drive the detection device to move relative to the support platform along the first direction and the second direction, wherein the second direction intersects the first direction; The detection device has an initial position and a first extreme position in its travel along the first direction, and the first detection component and the receiving component are distributed along the direction from the initial position to the first extreme position. Alternatively, the detection device has an initial position and a second extreme position in its travel in the second direction, and the first detection component and the receiving component are distributed along the direction from the initial position to the second extreme position.

[0021] Optionally, the detection device and the first driving device are disposed on the upper side of the support platform, and the radiation source and the second driving device are disposed on the lower side of the support platform.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the detection device in the embodiments of this application; Figure 2 for Figure 1 A schematic diagram of the detection device from another direction; Figure 3 for Figure 1 A schematic diagram of the structure of the first protective component of the detection device when it is in the first position; Figure 4 for Figure 1 A schematic diagram of the structure of the first protective component of the detection device when it is in the second position; Figure 5 for Figure 1 A simplified schematic diagram of the first protective component of the detection device; Figure 6 for Figure 1 A schematic diagram of the structure of the first protective component of the detection device; Figure 7 for Figure 1 Schematic diagram of the structure of the second protective component of the detection device; Figure 8This is a simplified schematic diagram of the detection device in the embodiments of this application.

[0024] Figure label: Detection device 10; First drive unit 20; Second drive unit 30; Support platform 40; X-ray source 50; First detection component 100, first detection element 110; Second detection component 200, second detection element 210; Receiver component 300, receiver 310, receiver unit 311; Protective component 400, first protective member 410, first protective part 411, clearance groove 411a, first connecting part 412, extension part 412a, first mounting groove 413, third protective part 414, second protective member 420, second protective part 421, second connecting part 422, protective layer 420a, reinforcing layer 420b, wire hole 423, driving member 430, cylinder seat 431, slide table 432; Mounting base 500; Initial position A, first extreme position B. Detailed Implementation

[0025] The following will clearly and completely describe the concept and technical effects of this application in conjunction with embodiments, so as to fully understand the purpose, features and effects of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application.

[0026] In the description of the embodiments of this application, if directional descriptions are involved, such as "up", "down", "front", "back", "left", "right" etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] In the description of the embodiments of this application, if a feature is referred to as "setting," "fixing," "connecting," or "installing" on another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of this application, if "several" is involved, it means one or more; if "multiple" is involved, it means two or more; if "greater than," "less than," or "exceeds," it should be understood as excluding the stated number; if "above," "below," or "within," it should be understood as including the stated number. If "first" or "second" is involved, it should be understood as used to distinguish technical features, and not as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0028] The fabrication process of a circuit board includes drilling, back drilling, pattern processing, and solder mask processing. Drilling creates holes connecting different layers of the circuit board. Back drilling removes unwanted traces by drilling holes from the back side of already formed holes. Pattern processing transfers the designed circuitry to the copper foil surface, forming conductive lines. Solder mask processing creates an insulating layer covering non-pad areas. These processes may result in internal defects, such as misaligned drill holes. These defects require detection using methods like X-ray inspection. To prevent X-ray damage to components, protective mechanisms such as shielding plates are needed. As mentioned earlier, in related technologies, shielding plates switch between a blocked and open position by rotating around an axis, thus requiring significant space and increasing the size of the detection device. Therefore, this application proposes a detection device 10 where the protective component can move linearly to reduce space occupancy. The following description, in conjunction with the accompanying drawings and specific embodiments, will illustrate this.

[0029] The first aspect of this application provides a detection device 10. The detection device 10 in this embodiment can be applied to non-destructive testing of workpieces. For ease of understanding, the detection steps are roughly described using a circuit board as an example: During detection, the X-ray source and the detection device 10 are respectively arranged on opposite sides of the circuit board (for example, the X-ray source is on the lower side and the detection device 10 is on the upper side). The X-ray source emits X-rays into the circuit board. After the X-rays penetrate, they are received by the receiving component in the detection device 10. The X-rays received by the detection device 10 are converted into electrical signals, and internal defects of the circuit board are identified based on the electrical signals. In addition, in order to ensure the receiving effect, the distance between the receiving component and the circuit board needs to be measured by an instrument such as a rangefinder before detection.

[0030] Reference Figure 1 , Figure 2In this embodiment, the detection device 10 includes a first detection component 100, a receiving component 300, a protective component 400, and a mounting base 500. The mounting base 500 serves as a mounting foundation for directly or indirectly mounting the aforementioned first detection component 100, receiving component 300, and protective component 400. The receiving component 300 receives radiation from a radiation source. The first detection component 100 acquires first information, which may be the distance between the receiving component 300 and the workpiece to be measured, or other information. In some specific embodiments, the first information may also include the distance between the receiving component 300 and the radiation source window. After acquiring this distance information, the height of the radiation source can be adjusted to change the distance from the detector to the radiation source window, thereby changing the resolution and magnification. For example, the first detection component 100 is configured as a laser ranging component.

[0031] Specifically, the receiving assembly 300 has a receiving element 310, and the receiving element 310 has a receiving section 311 for receiving rays (shown in...). Figure 3 The receiving part 311 is positioned facing the workpiece to be tested. For example, when the detection device 10 is positioned above the workpiece to be tested, the receiving part 311 is located below the receiving part 310. The first detection assembly 100 has a first detection element 110, which refers to a device within the first detection assembly 100 used to obtain first information and susceptible to damage from radiation, such as a device related to laser ranging.

[0032] As shown in the figure, since the receiving component 300 and the first detection element 110 are both integrated and installed on the same mounting base 500, when the receiving component 300 is performing non-destructive testing to receive radiation, the first detection element 110 will also be irradiated by radiation. Since the first detection element 110 itself does not have a specific design for radiation protection, long-term exposure to radiation can easily lead to damage. Therefore, the detection device 10 in this embodiment is protected by a protective component 400. Specifically, the protective component 400 includes a first protective element 410 and a driving element 430. The first protective element 410 is made of a material capable of blocking radiation, such as lead. The first protective element 410 is connected to the driving element 430, which is configured to drive the first protective element 410 to move along a linear first direction to switch between a first position and a second position. When the first protective element 410 is in the first position, as... Figure 3 As shown, the first protective member 410 at least blocks the first detection member 110, thereby at least preventing radiation from reaching the first detection member 110; when the first protective member 410 is in the second position, as Figure 4As shown, at least the first detection element 110 is in an exposed state, meaning the first protective element 410 no longer obstructs the first detection element 110, thus facilitating the first detection element 110 to acquire the first information. The first protective element 410 obstructing the first detection element 110 can be understood as follows: along the distribution direction of the first detection element 110 and the radiation source, the first protective element 410 is located between the two, and the projection of the first detection element 110 on a projection plane is entirely within the projection of the first protective element 410 on that projection plane. The first detection element 110 being in an exposed state can be understood as follows: the projection of the first detection element 110 on the projection plane is entirely outside the projection of the first protective element 410 on that projection plane.

[0033] It should be noted that in some scenarios, the first protective component 410 blocks the first detection component 110 when it is in the first position, but does not block other devices on the first detection assembly 100 that are not easily damaged by radiation; as an alternative to the above solution, the first protective component 410 blocks the entire first detection component 110 when it is in the first position.

[0034] As described above, the first protective element 410 can move between the first position and the second position, thus not obstructing the first detection element 110 from acquiring the first information, and protecting the first detection element 110 from receiving radiation when the receiving element 310 receives radiation, thereby improving the service life of the first detection element 110. Furthermore, to achieve the same effect, the rotation angle of the protective plate in related technologies must be at least greater than 90°. For example, it must be in a horizontal state when protection is needed and in a vertical state when avoidance is needed, resulting in the protective plate occupying a large space during rotation. In this embodiment, the first protective element 410 switches by moving along a linear first direction, occupying relatively less space, thereby helping to reduce the size of the detection device 10.

[0035] Reference Figure 1 , Figure 2 The detection device 10 also includes a second detection component 200, which is used to acquire second information that is different from the first information. For example, the first information is the distance information between the receiver 310 and the workpiece to be tested, and the second information is the image information of the workpiece to be tested. Based on the image information, the workpiece to be tested can be positioned. Specifically, the workpiece to be tested is moved to the underside of the detection device 10 along a linear direction by a transmission device. However, in actual transmission, there is a problem that the workpiece to be tested cannot accurately reach the detection position. Therefore, after acquiring the image information, the current position of the workpiece to be tested can be identified through the image information. When it deviates from the detection position, the transmission device can be further precisely controlled to transmit the workpiece to the detection position to ensure the detection effect.

[0036] The second detection component 200 has a second detection element 210, which refers to a device within the second detection component 200 used to obtain second information and is susceptible to damage from radiation, such as a device related to optical imaging. The second detection component 200 is connected to the mounting base 500. As mentioned earlier, since the second detection component 200 and the receiving component 300 are integrated and mounted on the same mounting base 500, when the receiving component 300 is performing non-destructive testing to receive radiation, the second detection element 210 will also be irradiated by radiation. Since the second detection element 210 itself does not have a specific radiation protection design, long-term exposure to radiation can easily lead to damage. Therefore, when the first protective element 410 is in the first position, such as... Figure 3 As shown, the first protective member 410 at least shields the first detection member 110 and the second detection member 210, thereby at least blocking radiation from reaching the first detection member 110 and the second detection member 210; when the first protective member 410 is in the second position, as Figure 4 ( Figure 4 As shown in the diagram (the dotted cone represents the illumination light transmitted from the light source in the second detection component 200), at least the first detection element 110 and the second detection element 210 are in an exposed state, thereby facilitating the first detection element 110 to acquire first information and the second detection element 210 to acquire second information. The occlusion and exposure states in this embodiment can be understood with reference to the aforementioned embodiments.

[0037] In this embodiment, by setting the second detection component 200, the detection device 10 can acquire more information, thereby increasing the detection function of the detection device 10, while reducing the damage of radiation to the second detection element 210, thereby extending the service life of the second detection element 210.

[0038] It should be noted that in some scenarios, the first protective component 410 blocks the second detection component 210 when it is in the first position, but does not block other devices on the second detection assembly 200 that are not easily damaged by radiation; as an alternative to the above solution, the first protective component 410 blocks the entire second detection assembly 200 when it is in the first position.

[0039] When the detection device 10 also includes a second detection component 200, refer to Figure 3 , Figure 4 Along the first direction, the first detection component 100 and the second detection component 200 are both located on the same side of the receiving component 300. The first detection component 100 and the second detection component 200 are distributed along the second direction, which intersects with the first direction. In this way, the first detection component 100, the second detection component 200 and the receiving component 300 can be compactly installed.

[0040] For example, the first direction is Figure 3 , Figure 4The front and back directions, the second direction is Figure 3 , Figure 4 In the left and right directions, the receiving component 300 is installed on the bottom surface of the mounting base 500. The bottom surface is set as a rectangle, with the length direction of the rectangle being the first direction and the width direction being the second direction. The first detection component 100 and the second detection component 200 are both installed on the front side of the mounting base 500, and the driving component 430 is installed on the left side of the mounting base 500.

[0041] It should be noted that the first detection component 100 and the second detection component 200 may also be located on the same side of the receiving component 300 along the second direction, and the first detection component 100 and the second detection component 200 may be distributed along the first direction. Alternatively, the first detection component 100 and the second detection component 200 may also be located on opposite sides of the receiving component 300 along either the first or second direction. Furthermore, the first detection component 100 and the second detection component 200 may be located on adjacent sides of the receiving component 300.

[0042] Reference Figure 3 , Figure 4 The receiving component 300 and the first detection component 100 are distributed along a first direction, that is, they are distributed along the moving direction of the first protective member 410. It can be understood that the receiving component 300 and the first detection component 100 may also be distributed along a second direction, that is, they are distributed along the direction perpendicular to the moving direction of the first protective member 410.

[0043] Reference Figure 5 The first protective member 410 includes a first protective part 411 and a first connecting part 412 connected to the first protective part 411. Specifically, when the first protective member 410 is in the first position, it shields the first detection member 110 through the first protective part 411. When the detection device 10 also includes a second detection component 200, the first protective member 410 specifically shields the first detection member 110 and the second detection member 210 through the first protective part 411 when it is in the first position.

[0044] Along the direction from the first detection component 100 to the receiving component 300 (e.g.) Figures 3 to 5 (From front to back), the first connecting part 412 has a protrusion 412a that extends relative to the first protective part 411 (in) Figure 5 The area of ​​the protrusion 412a is roughly indicated by a dashed box. A clearance space exists between the protrusion 412a and the first protective part 411, which can be formed by removing material. The drive member 430 is connected to the protrusion 412a. When the first detection component 100... Figure 3 , Figure 4When the device is installed on the first side of the mounting base 500, the first protective part 411 needs to move a relatively large distance away from the mounting base 500 along the first direction to expose the first detection element 110. In this embodiment, by providing a protrusion 412a extending towards the mounting base 500, the drive element 430 can also maintain connection with the first connecting part 412 when it is installed on the mounting base 500. Furthermore, when the first protective part 410 is in the first position, the aforementioned clearance space prevents the first protective part 411 from obstructing the receiver element 310 of the receiving component 300, thereby allowing the first detection component 100 and the receiving component 300 to be closer together for compact installation.

[0045] For example, the first connecting portion 412 is larger in size in the first direction than the first protective portion 411 in the first direction, and the front side of the first connecting portion 412 is flush with the front side of the first protective portion 411.

[0046] It should be noted that, referring to Figure 5 The first connecting portion 412 can be bent relative to the first protective portion 411. The first protective portion 411 is horizontally arranged, and the first connecting portion 412 is vertically arranged and extends upward relative to the first protective portion 411. In this way, the first protective portion 411 can be positioned below the first detection element 110 to provide shielding, and the first connecting portion 412 is connected to the drive element 430 mounted on the side of the mounting base 500. Alternatively, the first connecting portion 412 and the first protective portion 411 can also be in the same plane.

[0047] Reference Figures 3 to 5 The first protective member 410 has a first mounting groove 413 extending along a first direction. The first protective member 410 and the driving member 430 are connected to a fastener through the first mounting groove 413. An exemplary fastener is a threaded fastener, and the driving member 430 has a corresponding threaded hole. When the threaded fastener passes through the first mounting groove 413 and connects to the threaded hole, the first protective member 410 is fixed to the driving member 430. When the threaded fastener is loosened from the threaded hole, the first protective member 410 can move along the first mounting groove 413. Compared to setting fixed holes on the first protective member 410, the operator does not need to precisely align the holes on the first protective member 410 and the driving member 430 when installing the first protective member 410, thereby reducing installation difficulty.

[0048] When the first protective member 410 includes the aforementioned first protective part 411 and first connecting part 412, the first mounting groove 413 is disposed in the first connecting part 412 and extends at least to the protrusion 412a.

[0049] It should be noted that in some embodiments, the first protective member 410 has multiple parallel first mounting slots 413. The first protective member 410 is connected to the driving member 430 through each first mounting slot 413, which can enhance the connection reliability of the first protective member 410.

[0050] As an alternative to the above solution, the first protective member 410 has a second mounting groove extending along a second direction. The first protective member 410 and the driving member 430 are connected to fasteners through the second mounting groove, and the second direction intersects with the first direction. Referring to the foregoing embodiments, this embodiment can also reduce the difficulty of installation.

[0051] The receiving assembly 300 includes a receiver 310 and a connector connected to the receiver 310. The receiver 310 has a receiving part 311 for receiving radiation, and the connector is connected to a cable. The receiving assembly 300 transmits signals and power to other devices through the connector and the cable connected to the connector. For example, the receiver 310 has a socket, which can be a power port, a USB port, etc., and the connector is inserted into the socket.

[0052] Prolonged exposure to radiation can also damage the connector; therefore, refer to... Figures 1 to 4 The protective assembly 400 also includes a second protective element 420, which can be connected to the receiver 310 or to other structures, such as the aforementioned mounting base 500. The second protective element 420 at least blocks the connector, and at least the receiving part 311 of the receiver 310 is exposed, thereby preventing radiation from irradiating the connector, extending the service life of the connector, and without affecting the receiving part 311's ability to receive radiation.

[0053] In some scenarios, the second protective member 420 does not obstruct the receiving part 311, but obstructs other areas of the receiving part 310 that are different from the receiving part 311; as an alternative to the above solution, the second protective member 420 does not obstruct the entire receiving part 310.

[0054] When the protective assembly 400 also includes a second protective element 420, refer to Figure 3 , Figure 4 The receiving part 311 is disposed on the first side of the receiving member 310, for example... Figure 3 , Figure 4 The lower side of the receiving part 311 is positioned to facilitate its orientation toward the workpiece to be measured. The connector is attached to the second side of the receiving part 310 and protrudes relative to the receiving part 310. The second side is adjacent to the first side; for example, the second side is... Figure 3 , Figure 4 The rear side of the connector. When the receiving part 311 receives the radiation, some of the radiation will irradiate the protruding connector, thereby damaging the connector.

[0055] Based on the above structure, referring to Figure 7 The second protective member 420 includes a second protective portion 421 and a second connecting portion 422 connected to the second protective portion 421. The second connecting portion 422 extends along a second side, and the second protective portion 421 is bent relative to the second connecting portion 422 to extend along a first side. For example, the second connecting portion 422 is vertically arranged, and the second protective portion 421 is horizontally arranged, such that the second connecting portion 422, the second protective portion 421, and the receiving member 310 together define a receiving cavity for accommodating the connector. Thus, the second protective portion 421 can block radiation from irradiating the connector, thereby improving the connector's service life.

[0056] The second protective component 420 is mounted to other structures via the second connecting portion 422. For example, the second protective component 420 is mounted to the mounting base 500 via the second connecting portion 422. It should be noted that the second connecting portion 422 can also have a protective function. It cooperates with the second protective component 421 to block rays in different directions, thereby further improving the shielding effect of the second protective component 420.

[0057] When the protective assembly 400 also includes a second protective element 420, refer to Figure 7 The second protective element 420 is configured as a multi-layer structure, specifically, it includes a protective layer 420a and a reinforcing layer 420b stacked together. The protective layer 420a is made of lead, which can effectively isolate X-rays. The hardness of the reinforcing layer 420b is greater than that of the protective layer 420b, that is, greater than that of lead, which can strengthen the structure and reduce the deformation of the second protective element 420. For example, the reinforcing layer 420b is made of iron alloy.

[0058] Specifically, the protective layer 420a and the reinforcing layer 420b have the same shape, a portion of which together form the aforementioned second protective part 421, and the other portion together forms the aforementioned second connecting part 422.

[0059] Reference Figure 3 , Figure 4 The receiving part 311 is spaced at least a certain distance from the edge of the bottom surface of the receiving member 310 adjacent to the second side, thereby forming an edge region. For example, the receiving part 311 is spaced at least a certain distance from the rear edge of the bottom surface. The second protective part 421 blocks at least part of this edge region, thereby further enhancing the protective effect on the connector without affecting the receiving part 311's reception of rays. As an alternative to the above solution, the second protective part 421 abuts against the second side of the receiving member 310.

[0060] The driving component 430 is configured as a linear motor, which specifically includes a primary and a secondary. The primary extends along the first direction and contains multiple coils. The secondary is equipped with a permanent magnet. Through the magnetic field generated by the coils, the secondary can move relative to the primary along the first direction, thereby driving the first protective component 410 connected to the secondary to move.

[0061] As an alternative to the above solution, the drive unit 430 includes a drive body and a drive shaft connected to the drive body. The drive body is fixedly connected to the mounting base 500, and the drive shaft is extendable and retractable relative to the drive body in a first direction, thereby moving the first protective member 410 connected to the drive shaft. For example, the drive unit 430 is configured as a slide cylinder or a lead screw stepper motor. (Refer to...) Figure 2 The slide cylinder includes a cylinder seat 431 as the driving body, a cylinder shaft as the driving shaft, and a slide 432. A guide rail is provided on the cylinder seat 431. The slide 432 is fixedly connected to the cylinder shaft and slidably connected to the guide rail on the cylinder seat 431. A first protective member 410 is fixedly connected to the slide 432. Thus, as the cylinder shaft extends and retracts, the slide 432 and the first protective member 410 slide synchronously.

[0062] Reference Figure 3 , Figure 4 and Figure 6 The first protective member 410 includes a first protective portion 411. When in a first position, the first protective member 410 at least blocks the first detection member 110 along the irradiation direction of the radiation through the first protective portion 411. For example, if the radiation source is located below the first detection member 110, the irradiation direction of the radiation is from bottom to top, and the first protective portion 411 is horizontally arranged so that it can block the radiation from below the first detection member 110.

[0063] Based on the above structure, the first protective member 410 further includes a third protective portion 414. The third protective portion 414 is disposed circumferentially along the first protective portion 411 and extends toward the first detection member 110. The third protective portion 414 is used to at least laterally shield the first detection member 110. Besides directly irradiating the first detection member 110, rays may also be reflected from other structures and irradiate the first detection member 110. In this embodiment, by providing the third protective portion 414, the first detection member 110 can be laterally shielded, thereby reducing the amount of reflected rays irradiating the first detection member 110. For example, the third protective portion 414 is perpendicular to the first protective portion 411.

[0064] It should be noted that the first protective part 411 can be understood as including a protective layer and a reinforcing layer with reference to the foregoing embodiments. The protective layer is made of lead, thereby providing good shielding against X-rays. The hardness of the reinforcing layer is greater than that of the protective layer, that is, greater than the hardness of lead, thereby providing structural reinforcement and reducing deformation of the second protective component. Furthermore, the third protective part 414 can also be understood as including a protective layer and a reinforcing layer with reference to the foregoing embodiments. The reinforcing layers of the first protective part 411 and the third protective part 414 can be connected as a single structure, for example... Figure 6 As shown, the main body of the plate forms a reinforcing layer of the first protective part 411. A portion of the side of the plate is bent relative to the main body to form a reinforcing layer of the third protective part 414. In addition, another portion of the side of the plate is bent relative to the main body to form the aforementioned first connecting part 411. The protective layers of the first protective part 411 and the third protective part 414 can also be connected as a single structure.

[0065] Reference Figure 3 , Figure 4 and Figure 6 The first protective member 410 includes a first protective portion 411. When in a first position, the first protective member 410 at least blocks the first detection member 110 along the irradiation direction of the radiation through the first protective portion 411. For example, if the radiation source is located below the first detection member 110, the irradiation direction of the radiation is from bottom to top, and the first protective portion 411 is horizontally arranged so that it can block the radiation from below the first detection member 110.

[0066] Based on the above structure, the first protective part 411 has a clearance groove 411a. When the first protective member 410 is in the second position, the first detection member 110 is exposed through the clearance groove 411a. For example, when the first protective member 410 is in the second position, the first detection member 110 is located above the clearance groove 411a, thereby enabling the first detection member 110 to obtain first information about the workpiece below through the clearance groove 411a.

[0067] When the first protective part 411 has a clearance groove 411a, the first protective part 411 includes a first side and a second side disposed opposite to each other. The first side and the second side are arranged sequentially along the moving direction of the first protective member 410 from the first position to the second position. For example, the first side is... Figure 6 The rear side, the second side is Figure 6On the front side, the first protective member 410 moves from the first position to the second position in a direction from back to front. The first side is provided with a clearance groove 411a. Thus, when the first protective member 410 moves from the first position to the second position to expose the first detection member 110, compared to a design without the clearance groove 411a, the distance it moves can be shortened (the shortened distance is the dimension of the clearance groove 411a along the moving direction), thereby helping to reduce the travel distance of the first protective member 410 and thus reducing the overall volume.

[0068] A second aspect of this application provides a circuit board detection device, referring to... Figure 8 It includes a first driving device 20, a second driving device 30, a support platform 40, an X-ray source 50, and the detection device 10 in the aforementioned embodiments. The detection device of this embodiment can detect internal defects in circuit boards.

[0069] The support platform 40 is used to support the workpiece. The detection device 10 and the X-ray source 50 are located on opposite sides of the support platform 40. For example, the detection device 10 and the first driving device 20 are located on the upper side, and the X-ray source 50 and the second driving device 30 are located on the lower side. The first driving device 20 is connected to the detection device 10 and is used to drive the detection device 10 to move relative to the support platform 40. The second driving device 30 is connected to the X-ray source 50 and is used to drive the X-ray source 50 to move relative to the support platform 40. Through the coordinated movement of the detection device 10 and the X-ray source 50, different areas of the workpiece to be tested can be detected.

[0070] Specifically, the first driving device 20 can at least drive the detection device 10 to move along the aforementioned first and second directions, and the second driving device 30 can at least drive the X-ray source 50 to move along the aforementioned first and second directions. In some specific embodiments, the first and second directions are both horizontal, and the second driving device 30 can also drive the X-ray source 50 to move vertically. The first driving device 20 and the second driving device 30 can be selected from a drive system based on a rotary motor, a lead screw and a lead screw seat, or a drive system based on a rotary motor, a synchronous pulley and a synchronous belt. For example, the workpiece to be tested is set as a PCB board, and the second driving device 30 can simultaneously control the driving components to move in the first and second directions, so that the X-ray source 50 can move along a circular trajectory. The first driving device 20 drives the detection device 10 to move in accordance with the X-ray source 50 in the first and second directions to receive X-rays passing through the PCB board. Thus, the X-ray source 50 and the detection device 10 move synchronously to complete the 3D image scanning and construction, which is suitable for detecting the copper layer spacing of the PCB board before back drilling, so that the PCB board drilling equipment can obtain the depth value of the back drilling, thereby controlling the PCB board drilling equipment to complete the back drilling process; secondly, the circuit board detection device is also suitable for detection after the back drilling process is completed. By scanning the back drill hole with X-rays, the STUB value of the actual back drill hole is detected, thereby judging the drilling quality of the back drilling process.

[0071] When the first driving device 20 is capable of driving the detection device 10 to move along at least the aforementioned first and second directions, refer to Figure 8 The detection device 10 has an initial position A and a first extreme position B along its travel in the first direction. The figure shows the detection device 10 at the initial position A with a solid line and the detection device 10 at the first extreme position B with a dashed line. The initial position A is the position of the detection device 10 after it has been reset, and the first extreme position B is the farthest position that the detection device 10 can reach along the first direction.

[0072] In this embodiment, the first detection component 100 and the receiving component 300 are distributed along the direction from the initial position A to the first extreme position B. For example, they are distributed along... Figure 8 The components are distributed from right to left. Compared to other schemes, for example, the first detection component 100 and the receiving component 300 are arranged along... Figure 8 Compared to a scheme where the receiver component is distributed from left to right, when the receiver component 300 detects the left edge of the workpiece under test, it moves a shorter distance to the left from the initial position A, thus helping to improve detection efficiency. Alternatively, when the distance the receiver component 300 moves from the initial position A to the first extreme position B is fixed, this embodiment can detect larger workpieces under test.

[0073] As an alternative to the above solution, when the first driving device 20 is capable of driving the detection device 10 to move along the aforementioned first and second directions, the detection device 10 has an initial position and a second extreme position in the second direction, and the first detection component 100 and the receiving component 300 are distributed along the direction from the initial position to the second extreme position. The initial position A is the position of the detection device 10 after reset, and the second extreme position is the farthest position that the detection device 10 can reach along the second direction.

[0074] In this embodiment, the first detection component 100 and the receiving component 300 are distributed along the direction from the initial position to the second extreme position. When the receiving component 300 detects the left edge of the workpiece to be tested, the distance it moves from the initial position A to the second extreme position is shorter, thereby helping to improve detection efficiency. Alternatively, when the distance the receiving component 300 moves from the initial position A to the second extreme position is fixed, this embodiment can detect larger workpieces to be tested.

[0075] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A detection device, characterized in that, include: A receiving component for receiving radiation from a radiation source; A first detection component is used to acquire first information, and the first detection component has a first detection element; A protective component includes a first protective element and a driving element, wherein the first protective element is connected to the driving element; The driving member is configured to drive the first protective member to move along a linear first direction to switch between a first position and a second position. When the first protective member is in the first position, it at least blocks the first detection member. When the first protective member is in the second position, at least the first detection member is exposed.

2. The detection device according to claim 1, characterized in that, The detection device further includes a second detection component, which is used to acquire second information that is different from the first information, and the second detection component has a second detection element. Wherein, when the first protective component is in the first position, it at least covers the first detection component and the second detection component, and when the first protective component is in the second position, at least the first detection component and the second detection component are exposed.

3. The detection device according to claim 2, characterized in that, Along the first direction, the first detection component and the second detection component are both located on the same side of the receiving component, and the first detection component and the second detection component are distributed along the second direction, which intersects with the first direction; Alternatively, along the second direction, the first detection component and the second detection component are both located on the same side of the receiving component, the first detection component and the second detection component are distributed along the first direction, and the second direction intersects with the first direction.

4. The detection device according to claim 1, characterized in that, The receiving component and the first detection component are distributed along the first direction. The first protective member includes a first protective part and a first connecting part connected to the first protective part. When the first protective member is in the first position, it at least blocks the first detection component through the first protective part. Wherein, along the direction from the first detection component to the receiving component, the first connecting portion has an extension that extends relative to the first protective portion, and the driving member is connected to the extension.

5. The detection device according to claim 1, characterized in that, The protective components also include fasteners; The first protective member has a first mounting groove extending along the first direction, and the first protective member and the driving member are connected to the fastener through the first mounting groove; Alternatively, the first protective member has a second mounting groove extending along a second direction, and the first protective member and the drive member are connected to the fastener through the second mounting groove, the second direction intersecting the first direction.

6. The detection device according to claim 1, characterized in that, The receiving assembly includes a receiver and a connector connected to the receiver. The receiver has a receiving portion for receiving radiation. The protective assembly further includes a second protective member that at least blocks the connector and at least exposes the receiving portion.

7. The detection device according to claim 6, characterized in that, The receiving part is disposed on the first side of the receiving component, and the connector is connected to the second side of the receiving component, wherein the second side is disposed adjacent to the first side; The second protective member includes a second protective portion and a second connecting portion connected to the second protective portion. The second connecting portion extends along the second side. The second protective portion is bent relative to the second connecting portion to extend along the first side. The second connecting portion, the second protective portion, and the receiving member together define a receiving cavity. The connector is located within the receiving cavity.

8. The detection device according to claim 6, characterized in that, The second protective component includes a protective layer and a reinforcing layer stacked together. The protective layer is made of lead, and the hardness of the reinforcing layer is greater than that of the protective layer.

9. The detection device according to any one of claims 1 to 8, characterized in that, The driving component includes a driving body and a driving shaft connected to the driving body. The driving shaft is capable of extending and retracting relative to the driving body in the first direction, and the first protective component is connected to the driving shaft. Alternatively, the drive member includes a primary extending along the first direction and a secondary capable of moving relative to the primary along the first direction, the first protective member being connected to the secondary.

10. The detection device according to any one of claims 1 to 8, characterized in that, The first protective component includes a first protective part, and when the first protective component is in the first position, the first protective part at least blocks the first detection component along the direction of radiation of the radiation. The first protective component further includes a third protective part, which is disposed circumferentially along the first protective part and extends toward the first detection component. The third protective part is used to at least block the first detection component from the side.

11. The detection device according to any one of claims 1 to 8, characterized in that, The first protective component includes a first protective part, and when the first protective component is in the first position, the first protective part at least blocks the first detection component along the direction of radiation of the radiation. The first protective part has a clearance groove, and when the first protective part is in the second position, the first detection part passes through the clearance groove to be exposed.

12. The detection device according to claim 11, characterized in that, The first protective part includes a first side and a second side disposed opposite to each other. The first side and the second side are arranged sequentially along the moving direction of the first protective member from the first position to the second position. The first side is provided with the clearance groove.

13. A circuit board detection device, characterized in that, include: A support platform is used to support the workpiece to be tested. A radiation source for emitting radiation onto the workpiece to be tested, which is placed on the support platform; The detection device according to any one of claims 1 to 12, wherein the receiving component is used to receive rays that penetrate the workpiece to be tested in order to obtain detection information of the workpiece to be tested; A first driving device, connected to the detection device, is used to drive the detection device to move relative to the support platform; The second driving device is connected to the radiation source and is used to drive the radiation source to move relative to the support platform.

14. The circuit board detection device according to claim 13, characterized in that, The detection device and the first driving device are disposed on the upper side of the support platform, and the radiation source and the second driving device are disposed on the lower side of the support platform.

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