A double-sided back-drilling inspection apparatus

Abstract

The application relates to a double-sided back-drilling detection device, which comprises a workbench, a feeding module installed on the workbench, a discharging module installed on the workbench, a detection moving module comprising a clamping jaw and a moving assembly, the clamping jaw being connected with the moving assembly and used for clamping a detected piece, the moving assembly being installed on the workbench and extending from the feeding module to the discharging module, and a detection module comprising a first detection assembly and a second detection assembly, the first detection assembly and the second detection assembly being located on two sides of the detected piece. The double-sided back-drilling synchronous detection on the PCB can be realized, the detection error caused by the positioning reference deviation is avoided, the detection precision is improved, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a double-sided back-drilling testing device. Background Technology

[0002] Currently, manual microscope inspection is commonly used in the double-sided back drilling inspection process of PCB boards. This method relies on manual operation, has low inspection efficiency, and is prone to a decrease in accuracy due to fatigue.

[0003] In order to overcome the reliance on manual labor, some automated appearance inspection equipment has emerged to perform double-sided step-by-step inspection of PCBs. However, when using existing automated inspection equipment to inspect double-sided back-drilled holes on PCBs, it is necessary to inspect different sides step-by-step. Since double-sided back drilling involves drilling in both the front and back directions, there may be different reference deviations between the front and back sides of the PCB during the two inspections, such as differences in board flatness or different degrees of wear on positioning holes. This makes it difficult to establish a unified and accurate positioning reference, thus introducing new inspection errors.

[0004] Therefore, there is a need to provide a testing device that can perform double-sided back-drilling inspection. Utility Model Content

[0005] Therefore, it is necessary to provide a double-sided back-drilling inspection device, the specific technical solution of which is as follows.

[0006] A double-sided back-drilling inspection device, comprising: Workbench; The feeding module is installed on the workbench; The material feeding module is installed on the workbench; The detection moving module includes a gripper and a moving component; the gripper is connected to the moving component and is used to hold the workpiece to be detected; the moving component is mounted on the worktable and extends from the loading module to the unloading module. The detection module includes a first detection component and a second detection component; the first detection component and the second detection component are located on both sides of the object being detected.

[0007] Furthermore, it also includes an auxiliary support assembly; the auxiliary support assembly includes a lower support roller assembly and an upper pressure roller assembly; the lower support roller assembly is located below the workpiece being tested; the upper pressure roller assembly is located above the workpiece being tested.

[0008] Furthermore, the lower support roller assembly includes a lower support roller bracket, a first lifting component, and a lower support roller body; the first lifting component connects the lower support roller bracket and the lower support roller body. The upper pressure roller assembly includes an upper pressure roller bracket, a second lifting assembly, and an upper pressure roller body; the second lifting assembly connects the upper pressure roller bracket and the upper pressure roller body.

[0009] Furthermore, it includes at least two sets of auxiliary support components; one set of auxiliary support components is provided at the end of the feeding module near the unloading module, and another set of auxiliary support components is provided at the end of the unloading module near the feeding module.

[0010] Furthermore, the feeding module is provided with at least two sets of auxiliary support components at one end near the unloading module; the unloading module is provided with at least two sets of auxiliary support components at one end near the feeding module.

[0011] Furthermore, the gripper includes a lower gripper plate, an upper gripper plate, and a gripping drive component; a rotating shaft is mounted on the lower gripper plate, and the upper gripper plate is connected to the rotating shaft; the gripping drive component is mounted on the lower gripper plate and connected to the upper gripper plate, and is used to drive the upper gripper plate to rotate around the rotating shaft.

[0012] Furthermore, the moving component includes a first linear moving unit and a second linear moving unit; the first linear moving unit is mounted on the worktable, the second linear moving unit is mounted on the first linear moving unit, and the gripper is connected to the second linear moving unit; the first linear moving unit extends from the loading module to the unloading module, and the extension direction of the second linear moving unit is perpendicular to the extension direction of the first linear moving unit.

[0013] Furthermore, the feeding module includes two sets of conveying components arranged side by side, and a spacing adjustment component; the spacing adjustment component is connected to at least one set of conveying components and is used to adjust the spacing between the two sets of conveying components.

[0014] Furthermore, the feeding module also includes a fixed side baffle assembly, a movable side baffle assembly, a side baffle adjusting component, and a lifting front baffle assembly; the fixed side baffle assembly is connected to the worktable and located on one side of the conveying assembly; the movable baffle assembly is located on the other side of the conveying assembly; the side baffle adjusting component is connected to the movable side baffle and is used to adjust the distance between the movable side baffle and the fixed side baffle, and the side baffle adjusting component is installed on the worktable; the lifting front baffle assembly is located at one end of the conveying assembly near the unloading module.

[0015] Furthermore, detection moving modules are provided on both sides of the part being tested.

[0016] Beneficial effects: The double-sided back-drilling hole inspection device provided by this utility model can replace manual inspection with equipment, thereby improving inspection efficiency. By clamping the edge of the workpiece to be inspected with grippers, it passes through the inspection station where the inspection module is located. Through the first and second inspection components arranged on the upper and lower sides of the workpiece to be inspected, the double-sided back-drilling holes on the PCB board can be inspected simultaneously, avoiding inspection errors caused by positioning reference deviations and improving inspection accuracy. The double-sided synchronous inspection also further improves inspection efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the testing equipment; Figure 2 for Figure 1 The diagram shows the rear side view of the lower frame and worktable, which is hidden in the middle. Figure 3 for Figure 2 A schematic diagram showing the other side of the detection module that is further hidden; Figure 4 This is a schematic diagram of the lower support roller assembly; Figure 5 This is a schematic diagram of the upper pressure roller assembly; Figure 6 A schematic diagram for detecting the moving module; Figure 7 This is a partial schematic diagram of the feeding module.

[0019] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Loading module; 3. Unloading module; 4. Detection moving module; 5. First detection component; 6. Second detection component; 7. Lower support roller assembly; 8. Upper pressure roller assembly; 9. PCB board; 21. Fixed conveyor assembly; 22. Movable conveyor assembly; 23. Spacing adjustment assembly; 24. Fixed side baffle assembly; 25. Movable side baffle assembly; 26. Side baffle adjusting component; 27. Lifting front baffle assembly; 41. Gripper; 42. First linear motion unit; 43. Second linear motion unit; 411. Lower clamping plate; 412. Upper clamping plate; 413. Clamping drive component; 414. Rotating shaft; 71. Lower support roller bracket; 72. First lifting assembly; 73. Lower support roller body; 81. Upper pressure roller bracket; 82. Second lifting assembly; 83. Upper pressure roller body. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Example Reference Figure 1 and Figure 3 As shown, this embodiment provides a double-sided back-drilled hole inspection device, including a worktable 1, a loading module 2, a unloading module 3, an inspection moving module 4, and an inspection module. The worktable 1 is mounted on a lower frame. The loading module 2 and the unloading module 3 are respectively mounted on the worktable 1, forming an inspection station between them. The loading module 2 and the unloading module 3 are used to transport the workpiece to be inspected to the inspection station or from the inspection station to the storage area. In this embodiment, the workpiece to be inspected is a PCB board 9.

[0027] The detection moving module 4 includes a gripper 41 and a moving component; the gripper 41 is connected to the moving component and is used to grip the workpiece to be inspected; the moving component is installed on the worktable 1 and extends from the loading module 2 to the unloading module 3; the PCB board 9 is transported to the inspection station through the loading module 2, the edge of the PCB board 9 is gripped by the gripper 41, and the PCB board 9 is moved through the inspection station and transferred to the unloading module 3.

[0028] The detection module includes a first detection component 5 and a second detection component 6; the first detection component 5 and the second detection component 6 are located on both sides of the workpiece being inspected. During the process of the gripper 41 holding the PCB board 9 through the inspection station, the first detection component 5 and the second detection component 6 simultaneously inspect the double-sided back-drilled holes of the PCB board 9. It should be noted that in this embodiment, the detection components can be optical imaging equipment. It should also be noted that, to facilitate the placement of the detection components under the PCB board 9, a cutout portion can be provided on the worktable 1, and the detection components are located within the cutout portion.

[0029] The double-sided back-drilling hole inspection device provided in this embodiment can replace manual inspection with equipment, thereby improving inspection efficiency. By clamping the edge of the workpiece to be inspected by the gripper 41, it can pass through the inspection station where the inspection module is located. Through the first inspection component 5 and the second inspection component 6 arranged on the upper and lower sides of the workpiece to be inspected, the double-sided back-drilling hole on the PCB board 9 can be inspected simultaneously, avoiding inspection errors caused by positioning reference deviation, improving inspection accuracy, and the double-sided synchronous inspection further improves inspection efficiency.

[0030] Specifically, it also includes an auxiliary support assembly; the auxiliary support assembly includes a lower support roller assembly 7 and an upper pressure roller assembly 8; the lower support roller assembly 7 is located below the workpiece being inspected; the upper pressure roller assembly 8 is located above the workpiece being inspected. The auxiliary support assembly is disposed between the loading module 2 and the unloading module 3, and can provide auxiliary support for the PCB board 9 within the inspection station and position the PCB vertically.

[0031] Specifically, refer to Figure 4 and Figure 5 As shown, the lower support roller assembly 7 includes a lower support roller bracket 71, a first lifting assembly 72, and a lower support roller body 73; the first lifting assembly 72 connects the lower support roller bracket 71 and the lower support roller body 73; the upper pressure roller assembly 8 includes an upper pressure roller bracket 81, a second lifting assembly 82, and an upper pressure roller body 83; the second lifting assembly 82 connects the upper pressure roller bracket 81 and the upper pressure roller body 83. The first lifting assembly 72 and the second lifting assembly 82 can be cylinders, lead screw structures, or hydraulic cylinders, etc. At least two sets of auxiliary support assemblies are included; one set of auxiliary support assemblies is provided at the end of the feeding module 2 near the unloading module 3, and another set of auxiliary support assemblies is provided at the end of the unloading module 3 near the feeding module 2. In this embodiment, a total of four sets of auxiliary support assemblies are provided, arranged along the moving direction of the PCB board 9 within the inspection station.

[0032] On the one hand, the PCB board 9 is clamped by the upper pressure roller body 83 and the lower support roller body 73, which also corrects the flatness of the PCB board 9, further improving the detection accuracy. On the other hand, when the PCB board 9 is transferred between the loading module 2 and the gripper 41, the height of the lower support roller body 73 and the upper pressure roller body 83 is adjusted by the first lifting component 72 and the second lifting component 82, which can transfer the PCB board 9 to detach it from the loading module 2. When the PCB board 9 is transferred between the gripper 41 and the unloading module 3, the height of the lower support roller body 73 and the upper pressure roller body 83 is adjusted by the first lifting component 72 and the second lifting component 82, which can ensure that the PCB board 9 falls smoothly onto the unloading module 3.

[0033] Reference Figure 6As shown, the gripper 41 includes a lower clamping plate 411, an upper clamping plate 412, and a clamping drive component 413. A rotating shaft 414 is mounted on the lower clamping plate 411, and the upper clamping plate 412 is connected to the rotating shaft 414. The clamping drive component 413 is mounted on the lower clamping plate 411 and connected to the upper clamping plate 412. The upper clamping plate 412 includes a clamping end, and the clamping drive component 413 is connected to one end of the upper clamping plate 412, enabling the clamping drive component 413 to drive the upper clamping plate 412 to rotate around the rotating shaft 414, thereby achieving the clamping and releasing of the PCB board 9. The clamping drive component 413 can be a cylinder, a lead screw structure, or a hydraulic cylinder, etc.

[0034] Specifically, continue to refer to Figure 1 As shown, the moving assembly includes a first linear moving unit 42 and a second linear moving unit 43. The first linear moving unit 42 is mounted on the worktable 1, and the second linear moving unit 43 is mounted on the first linear moving unit 42. The gripper 41 is connected to the second linear moving unit 43. The first linear moving unit 42 extends from the loading module 2 to the unloading module 3, and the extension direction of the second linear moving unit 43 is perpendicular to the extension direction of the first linear moving unit 42. The first linear moving unit 42 enables the gripper 41 to hold the PCB board 9 through the inspection station, and the second linear moving unit 43 allows the position of the gripper 41 to be adjusted to accommodate PCB boards 9 of different widths.

[0035] For ease of understanding, in this embodiment, the moving direction of the first linear moving unit 42 can be defined as the X-axis direction, and the moving direction of the second linear moving unit 43 can be defined as the Y-axis direction; correspondingly, the moving directions of the first lifting component 72 and the second lifting component 82 are the Z-axis directions.

[0036] In this embodiment, both the first linear motion unit 42 and the second linear motion unit 43 can adopt a guide rail slider structure and be driven by a lead screw structure.

[0037] Specifically, refer to Figure 7 As shown, the feeding module 2 includes two sets of conveying components arranged in parallel, and a spacing adjustment component 23. The spacing adjustment component 23 is connected to at least one set of conveying components and is used to adjust the spacing between the two sets of conveying components. In this embodiment, the conveying components are divided into a fixed conveying component 21 and a movable conveying component 22. The position of the fixed conveying component 21 is kept fixed, while the movable conveying component 22 is connected to the spacing adjustment component 23. The spacing adjustment component 23 adjusts the position of the movable conveying component 22, thereby adjusting the spacing.

[0038] In other embodiments, the spacing adjustment component 23 can be connected to two sets of conveying components respectively, and the spacing can be adjusted by synchronously adjusting the positions of the two sets of conveying components.

[0039] By adjusting the spacing between the two conveying components, the conveying components can be adapted to PCB boards 9 of different sizes. By keeping the fixed conveying component 21 in a fixed position and using the spacing adjustment component 23 to drive the movable conveying component 22 to move, it is easier to set the side positioning, so that PCB boards 9 of different sizes can be positioned using a positioning standard.

[0040] It should be noted that in this embodiment, the conveying component adopts a belt conveyor structure. Other forms of conveying structures may also be used in other embodiments.

[0041] The structure and principle of the unloading module 3 are the same as those of the loading module 2, and will not be described again in this embodiment.

[0042] Specifically, refer to Figure 1 and Figure 7 As shown, the feeding module 2 further includes a fixed side baffle assembly 24, a movable side baffle assembly 25, a side baffle adjusting component 26, and a lifting front baffle assembly 27. The fixed side baffle assembly 24 is connected to the worktable 1 and located on one side of the conveying assembly. The movable baffle assembly is located on the other side of the conveying assembly. The side baffle adjusting component 26 is connected to the movable side baffle and is used to adjust the distance between the movable side baffle and the fixed side baffle. The side baffle adjusting component 26 is installed on the worktable 1. The lifting front baffle assembly 27 is located at one end of the conveying assembly near the unloading module 3. The side baffle assembly and the front baffle assembly can be used to initially position the PCB board 9. It should be noted that in this embodiment, the movable front baffle assembly and the fixed side baffle assembly 24 are respectively provided with lifting structures to adjust the height of the baffle. The lifting structure can be a pneumatic cylinder or a hydraulic cylinder.

[0043] Specifically, detection moving modules 4 are provided on both sides of the component being inspected. By clamping the PCB board 9 on both sides, the stability of the clamping can be improved.

[0044] Specifically, it also includes a control module, which can control the coordinated actions of the feeding module 2, the unloading module 3, the detection and movement module 4, the detection module, and auxiliary support components.

[0045] In this embodiment, the PCB is transferred to the inspection station via the loading module 2, and the PCB board 9 is held by the gripper 41 and passes through the inspection station. During the process of the PCB board 9 passing through the inspection station, the flatness of the PCB board 9 is corrected by the lower support roller body 73 and the upper pressure roller body 83, and the double-sided back-drilled holes are inspected by the inspection module. The inspection items include, but are not limited to, hole deviation detection. Finally, the PCB board 9 is transferred to the unloading module 3. This allows different PCB boards 9 to be loaded, inspected, and scanned separately, improving inspection efficiency; it can adapt to PCB boards 9 of different sizes, increasing the applicability; and it can be directly integrated into the production line for back-drilled holes of PCB boards 9 to achieve fully automated operation.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A double-sided back-drilling inspection device, characterized in that, include: Workbench; The feeding module is installed on the workbench; The material feeding module is installed on the workbench; Detection of moving modules, including grippers and moving components; The gripper is connected to the moving component and is used to grip the workpiece to be inspected; the moving component is mounted on the worktable and extends from the loading module to the unloading module. The detection module includes a first detection component and a second detection component; the first detection component and the second detection component are located on both sides of the object being detected.

2. The double-sided back-drilling inspection device according to claim 1, characterized in that, It also includes an auxiliary support assembly; the auxiliary support assembly includes a lower support roller assembly and an upper pressure roller assembly; the lower support roller assembly is located below the workpiece being tested; the upper pressure roller assembly is located above the workpiece being tested.

3. The double-sided back-drilling inspection device according to claim 2, characterized in that: The lower support roller assembly includes a lower support roller bracket, a first lifting component, and a lower support roller body; the first lifting component connects the lower support roller bracket and the lower support roller body. The upper pressure roller assembly includes an upper pressure roller bracket, a second lifting assembly, and an upper pressure roller body; the second lifting assembly connects the upper pressure roller bracket and the upper pressure roller body.

4. The double-sided back-drilling inspection device according to claim 2, characterized in that, It includes at least two sets of auxiliary support components; one set of auxiliary support components is provided at the end of the feeding module near the unloading module, and another set of auxiliary support components is provided at the end of the unloading module near the feeding module.

5. The double-sided back-drilling inspection device according to claim 2, characterized in that, The feeding module is provided with at least two sets of auxiliary support components at one end near the unloading module; the unloading module is provided with at least two sets of auxiliary support components at one end near the feeding module.

6. The double-sided back-drilling inspection device according to claim 1, characterized in that, The gripper includes a lower gripper plate, an upper gripper plate, and a gripping drive component; a rotating shaft is mounted on the lower gripper plate, and the upper gripper plate is connected to the rotating shaft; the gripping drive component is mounted on the lower gripper plate and connected to the upper gripper plate, and is used to drive the upper gripper plate to rotate around the rotating shaft.

7. The double-sided back-drilling inspection device according to claim 1, characterized in that, The moving component includes a first linear moving unit and a second linear moving unit; the first linear moving unit is mounted on the worktable, the second linear moving unit is mounted on the first linear moving unit, and the gripper is connected to the second linear moving unit; the first linear moving unit extends from the loading module to the unloading module, and the extension direction of the second linear moving unit is perpendicular to the extension direction of the first linear moving unit.

8. The double-sided back-drilling inspection device according to claim 1, characterized in that, The feeding module includes two sets of conveying components arranged side by side, and a spacing adjustment component; the spacing adjustment component is connected to at least one set of conveying components and is used to adjust the spacing between the two sets of conveying components.

9. A double-sided back-drilling inspection device according to claim 8, characterized in that, The feeding module further includes a fixed side baffle assembly, a movable side baffle assembly, a side baffle adjusting component, and a lifting front baffle assembly; the fixed side baffle assembly is connected to the worktable and located on one side of the conveying assembly; the movable side baffle assembly is located on the other side of the conveying assembly; the side baffle adjusting component is connected to the movable side baffle and is used to adjust the distance between the movable side baffle and the fixed side baffle, and the side baffle adjusting component is installed on the worktable; the lifting front baffle assembly is located at one end of the conveying assembly near the unloading module.

10. A double-sided back-drilling inspection device according to claim 1, characterized in that, Detection moving modules are provided on both sides of the part being inspected.

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