Detection device

Abstract

The utility model discloses detection equipment, and belongs to the technical field of optical detection. The detection equipment comprises a cross beam, a first guide rail installed on the side wall of the cross beam, a second guide rail installed on the side wall of the cross beam, an organ cover assembly with a first sliding connection part and a second sliding connection part, a first motion module installed on the cross beam and located between the first guide rail and the second guide rail, and an installation plate. The second guide rail and the first guide rail are vertically spaced and arranged in parallel, the mounting plate is slidably arranged on the first guide rail and the second guide rail and connected with the organ cover assembly, the first sliding connection part is slidably arranged on the first guide rail, the second sliding connection part is slidably arranged on the second guide rail, the first sliding connection part is slidably arranged on the first guide rail, and the second sliding connection part is slidably arranged on the second guide rail. The first movement module is in transmission connection with the mounting plate, and drives the organ cover assembly to stretch out and draw back by driving the mounting plate to move. The detection equipment provided by the utility model is simple in structure, and improves the movement stability and reliability of the mounting plate and the organ cover assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of optical detection, and in particular to a detection device. Background Technology

[0002] In existing technologies, AOI optical inspection equipment is generally used to detect defects on the surface of circuit boards. The AOI optical inspection equipment uses a drive module to move the imaging components and other parts on the mounting plate to a designated position on the circuit board for defect detection. When inspecting the bottom surface of the circuit board, the drive module is located below the circuit board. However, due to the inevitable occurrence of occasional solder balls and solder dross residues on the circuit board during the manufacturing process, there is a risk that solder balls, solder dross, or small components on the circuit board may fall and contaminate the drive module, which can easily affect the stability and reliability of the drive module's movement. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a testing device with a simple structure, which improves the stability and reliability of the movement of the mounting plate and bellows cover assembly.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A testing device is provided, comprising:

[0006] beam;

[0007] The first guide rail and the second guide rail are fixedly installed on the side wall of the crossbeam. The first guide rail and the second guide rail are arranged vertically spaced and parallel to each other.

[0008] The bellows cover assembly has a first sliding joint and a second sliding joint;

[0009] A first motion module is mounted on the crossbeam and located between the first guide rail and the second guide rail; and

[0010] The mounting plate is slidably mounted on the first guide rail and the second guide rail and is connected to the bellows cover assembly;

[0011] The first sliding joint is slidably mounted on the first guide rail, the second sliding joint is slidably mounted on the second guide rail, the first motion module is connected to the mounting plate in a transmission manner, and by driving the mounting plate to move, the bellows cover assembly is driven to extend and retract along the extension direction of the first guide rail and the second guide rail.

[0012] Optionally, the testing device further includes a first limiting member and a second limiting member; the first limiting member is disposed above the first guide rail and forms a first limiting groove between the first guide rail and the first limiting groove, the second limiting member is disposed above the second guide rail and forms a second limiting groove between the second guide rail, the first sliding part of the bellows cover assembly is installed in the first limiting groove, and the second sliding part of the bellows cover assembly is installed in the second limiting groove to prevent the bellows cover assembly from falling off.

[0013] Optionally, the first guide rail is provided with a first guide groove, the second guide rail is provided with a second guide groove, the first sliding part is slidably disposed in the first guide groove, and the second sliding part is slidably disposed in the second guide groove, thereby realizing the limiting and guiding of the extension and retraction of the bellows cover assembly.

[0014] Optionally, the first limiting member is provided with a third guide groove, the first guide groove and the third guide groove are disposed opposite to each other on the inner wall of the first limiting groove, the second guide groove is disposed on the inner wall of the second limiting groove, the first sliding part of the bellows cover assembly is provided with a first locking platform that slides on the first guide groove and a third locking platform that slides on the third guide groove, and the second sliding part is provided with a second locking platform that slides on the second guide groove. The bellows cover assembly is not easy to slide out and has high reliability.

[0015] Optionally, the crossbeam further has a mounting bottom, the first guide rail and the second guide rail both extend along a first horizontal straight line direction, the mounting bottom is provided with a first mounting seat and a second mounting seat, both for mounting on the second motion module to move the crossbeam along a second horizontal straight line direction, the first horizontal straight line direction is perpendicular to the second horizontal straight line direction, the first mounting seat and the second mounting seat are spaced apart along the first horizontal straight line direction on the mounting bottom, the first guide groove is located on the upper end face of the first guide rail, the second guide groove is located on the upper end face of the second guide rail, the second locking platform is located at the lower end of the bellows cover assembly and extends downward relative to the lower end of the bellows cover assembly, to prevent the lower end of the bellows cover assembly from interfering with the first mounting seat and the second mounting seat when the bellows cover assembly extends or retracts.

[0016] Optionally, the testing device further includes a first extension rail installed on the side wall of the crossbeam and connected to the first guide rail, and a second extension rail installed on the side wall of the crossbeam and connected to the second guide rail; the first extension rail is provided with a fourth guide groove communicating with the first guide groove, the second extension rail is provided with a fifth guide groove communicating with the second guide groove, the lower end of the second extension rail is higher than the lower end of the second guide rail, the lower end face of the second extension rail and one end of the second guide rail together form a clearance groove, at least part of the first mounting seat extends upward into the clearance groove, the first extension rail and the second extension rail provide Z-axis support for the bellows cover assembly and prevent the bellows cover assembly from detaching.

[0017] Optionally, the mounting plate is provided with a first sensing plate for triggering the first photoelectric sensor, and the first mounting base and / or the second mounting base is provided with a second sensing plate for triggering the second photoelectric sensor, so as to facilitate the control of the movement of the detection device.

[0018] Optionally, the crossbeam is provided with a plurality of pressure blocks spaced apart along the extension direction of the first guide rail; the first limiting member is installed on the crossbeam through each of the pressure blocks, and each of the pressure blocks is located between the first limiting member and the first guide rail and abuts against the first guide rail, thereby improving the installation space for convenient installation of the first motion module.

[0019] Optionally, the testing device further includes a third motion module disposed on the mounting plate; the output end of the third motion module slides vertically relative to the mounting plate, thereby improving the flexibility of the testing device.

[0020] Optionally, the accordion assembly includes a first accordion cover and a second accordion cover; the first motion module includes a first lead screw rotatably mounted on the side wall of the crossbeam; the first accordion cover and the second accordion cover are spaced apart along the axial direction of the first lead screw;

[0021] The first bellows cover also has a first connecting end and a first movable end arranged at intervals along the axial direction of the first lead screw. The second bellows cover also has a second connecting end and a second movable end arranged at intervals along the axial direction of the first lead screw. Both the first connecting end and the second connecting end are connected to the crossbeam. The mounting plate is located between the first movable end and the second movable end, and both the first movable end and the second movable end are connected to the mounting plate. The first lead screw is protected by the linkage between the first bellows cover and the second bellows cover.

[0022] Optionally, the testing device further includes a first connector and a second connector; the first connector and the second connector are spaced apart along the axial direction of the first lead screw on the crossbeam, the first guide rail, the second guide rail, the first limiting member, the second limiting member, and the first lead screw are all located between the first connector and the second connector, the first connecting end is connected to the first limiting member, and the second connecting end is connected to the second limiting member, thereby fixing and limiting the left and right ends of the bellows cover assembly.

[0023] Optionally, the testing device further includes a third connector and a fourth connector; the mounting plate is connected to the first movable end through the third connector, and the mounting plate is connected to the second movable end through the fourth connector, thereby realizing the connection between the first and second bellows covers and the mounting plate.

[0024] Optionally, the testing equipment further includes a first cable chain for routing the first motion module; the crossbeam also has a routing section, the routing section being opposite to the side wall of the crossbeam, and the first cable chain is installed on the routing section to route the first motion module.

[0025] Optionally, the testing equipment further includes a first bracket disposed on the wiring section and an adapter connected to the mounting plate; the first cable chain has a third connecting end connected to the first bracket and a third movable end connected to the adapter to ensure the connection of the line.

[0026] Optionally, the testing equipment further includes a cover plate; the cover plate is installed on the adapter and together with the adapter to form a wiring channel, and the cover plate serves to prevent dust.

[0027] Optionally, the testing equipment further includes a second bracket and a second cable chain for routing the second motion module; the second cable chain is mounted on the crossbeam via the second bracket, and the second cable chain and the crossbeam are arranged sequentially along the extension direction of the first guide rail or the second guide rail to facilitate the routing of the second motion module.

[0028] Optionally, the detection device further includes a first anti-collision pad and a second anti-collision pad spaced apart on the side wall of the crossbeam; the mounting plate is located between the first anti-collision pad and the second anti-collision pad, and both the first anti-collision pad and the second anti-collision pad are located on the moving path of the mounting plate, thereby reducing the damage caused by the impact generated when the mounting plate slides.

[0029] Optionally, a cable guard is installed on the crossbeam to facilitate cable routing and protect the cable from being cut by the sharp edge of the crossbeam.

[0030] Optionally, the crossbeam is made of aluminum profile, and the crossbeam has a rectangular cross-section along the extension direction perpendicular to the first guide rail, with multiple reinforcing ribs between adjacent sides of the rectangle.

[0031] The beneficial effects of this utility model are as follows:

[0032] The testing equipment of this invention is equipped with a first guide rail and a second guide rail. The mounting plate is simultaneously mounted on both the first and second guide rails, which provide support and guidance for the movement of the mounting plate. Meanwhile, the first and second sliding joints of the bellows cover assembly are respectively mounted on the first and second guide rails, allowing the first and second guide rails to also provide support and guidance for the bellows cover assembly's telescopic movement. This improves the stability and reliability of the movement of the mounting plate and the bellows cover assembly. The testing equipment does not require a support frame, resulting in a simpler structure. Attached Figure Description

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0034] Figure 1 This is a schematic diagram of the testing equipment. The middle parts of both the first and second bellows covers are omitted in the diagram.

[0035] Figure 2 This is a structural schematic diagram of the testing equipment from another perspective. The middle part of both the first and second bellows covers is omitted in the diagram.

[0036] Figure 3 An exploded view of the testing equipment;

[0037] Figure 4 for Figure 3 An enlarged view of point A, in which the first accordion cover is hidden;

[0038] Figure 5 This is a cross-sectional view of the testing equipment along the X direction;

[0039] Figure 6 This is a schematic diagram of the structure of the first bellows cover;

[0040] Figure 7 This is a schematic diagram of the second bellows cover.

[0041] Explanation of reference numerals in the attached figures:

[0042] 11. Crossbeam; 12. First guide rail; 13. Second guide rail; 14. Bellows cover assembly; 15. First motion module; 16. Mounting plate; 17. First limiting component; 18. Second limiting component; 19. First limiting groove; 20. Second limiting groove; 21. Pressure block; 22. First mounting base; 23. Second mounting base; 24. First extension rail; 25. Second extension rail; 26. Clearance groove; 27. First sensing plate; 28. Second sensing plate 29. First connector; 30. Second connector; 31. Third connector; 32. Fourth connector; 33. First cable chain; 34. First bracket; 35. Adapter; 36. Cover plate; 37. Second bracket; 38. Second cable chain; 39. First anti-collision pad; 40. Second anti-collision pad; 41. Cable sleeve; 42. First positioning seat; 43. Second positioning seat; 44. Bracket; 45. First slider; 46. Second slider;

[0043] 111. Side wall; 112. Bottom mounting; 113. Cable routing section; 114. Top mounting;

[0044] 121. First guide groove;

[0045] 131. Second guide groove;

[0046] 141. First accordion cover; 142. Second accordion cover; 143. First sliding joint; 144. Second sliding joint;

[0047] 151. First lead screw; 153. Driver; 154. Support; 155. Ball bearing; 156. Coupling;

[0048] 171. Third guide groove;

[0049] 241. Fourth guide groove;

[0050] 251. Fifth guide groove;

[0051] 1411, First connecting end; 1412, First movable end;

[0052] 1421. Second connecting end; 1422. Second movable end;

[0053] 1431, First card table; 1432, Third card table;

[0054] 1441, Second Card Station. Detailed Implementation

[0055] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0056] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "fixed," "linked," "communicated," "abutting," "clamping," 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description herein, it should be understood that the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationships shown in the accompanying drawings, and are used only for ease of description and simplification of operation. They 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 utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0059] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0061] Unless otherwise stated or defined, the term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0062] For ease of description, unless otherwise stated, the left and right directions mentioned below are the same as... Figure 1 The X direction is consistent with the front-back direction mentioned below. Figure 1 The Y-direction is consistent with the vertical direction mentioned below. Figure 1 The Z-direction is consistent.

[0063] In related technologies, existing AOI (Auto Optical Inspection) equipment can inspect the A-side and B-side of a circuit board individually, or simultaneously on both sides. When the circuit board is placed horizontally, there are scenarios where the bottom surface of the circuit board needs to be inspected. This optical inspection equipment uses a gantry structure to achieve multi-dimensional movement of the imaging module. The gantry structure includes a crossbeam mounted on symmetrical guide rails, a linear drive module mounted on the crossbeam, and a mounting plate for the imaging module suspended on the crossbeam. The linear drive module drives the mounting plate to move along a horizontally set X-axis. For AOI optical inspection equipment, some scenarios require inspection of the bottom surface of the circuit board (PCB). In such cases, a gantry structure needs to be placed underneath the circuit board. During circuit board inspection, because many small components on the circuit board are fixed with solder paste, there is a risk that solder paste and small components may fall and contaminate the linear drive module during circuit board processing, affecting the smoothness and reliability of the linear drive module's movement. During the research and development process, the inventors conceived of using a bellows-shaped cover assembly to protect the linear drive module, utilizing the extension and retraction of the bellows-shaped cover assembly to achieve protection. However, in some devices, the bellows-shaped cover assembly is fixed at its connecting end, while its movable end is connected to the linear drive module. The extension and retraction area between the connecting and movable ends lacks support and limiting guidance, making the extension and retraction area prone to wobbling. Furthermore, the entire load of the mounting plate and the bellows-shaped cover is applied to the linear drive module, significantly reducing the smoothness and reliability of the bellows-shaped cover assembly and mounting plate's movement. In other devices, the bellows-shaped cover assembly is mounted on the equipment using a support frame, and the mounting plate is mounted on the equipment via guide rails. The support frame supports the bellows-shaped cover assembly and limits its extension and retraction, while double guide rails support the mounting plate and limit its sliding. However, this method is structurally complex and cumbersome to install.

[0064] To address the problems in the aforementioned related technologies, this application provides a testing device with a simple structure that ensures the smooth and reliable movement of the bellows cover assembly and the mounting plate without requiring a support frame. This testing device utilizes a first guide rail and a second guide rail to support, limit, and guide the telescopic movement of the bellows cover assembly and the sliding of the mounting plate, resulting in a simpler overall structure and improved stability and reliability of the movement of the mounting plate and the bellows cover assembly.

[0065] like Figures 1 to 7As shown, the testing equipment provided in this application includes a crossbeam 11, a first guide rail 12, a second guide rail 13, a bellows cover assembly 14, a first motion module 15, and a mounting plate 16. The mounting plate 16 is used to mount imaging components such as cameras. The crossbeam 11 extends horizontally and has sidewalls 111 or mounting sides. When performing bottom surface testing of a circuit board, the crossbeam 11 is below the bottom surface of the circuit board, and the mounting plate 16 is used to mount the camera assembly. The first guide rail 12 and the second guide rail 13 are both mounted on the sidewalls 111 of the crossbeam 11. The second guide rail 13 is arranged vertically at intervals from the first guide rail 12, and the second guide rail 13 is parallel to the first guide rail 12. The first motion module 15 is mounted on the crossbeam 11 and located between the first guide rail 12 and the second guide rail 13. The output end of the first motion module 15 can move along the extension direction of the first guide rail 12 or the extension direction of the second guide rail 13. The output end of the first motion module 15 is connected to the mounting plate 16, thereby allowing the mounting plate 16 to move horizontally in the left-right direction. The bellows cover assembly 14 has a first sliding part 143 and a second sliding part 144, which are spaced apart along a direction perpendicular to the extension direction of the bellows cover assembly 14. The cross section of the bellows cover assembly 14 perpendicular to the extension direction is C-shaped. The mounting plate 16 slides on both the first guide rail 12 and the second guide rail 13. The first guide rail 12 and the second guide rail 13 not only support the mounting plate 16 but also provide limiting guidance for the sliding of the mounting plate 16, allowing the mounting plate 16 to move smoothly along a horizontal straight line and improving the stability of the mounting plate 16 during movement. The mounting plate 16 is connected to the bellows cover assembly 14. When the mounting plate 16 slides left and right, it can drive the bellows cover assembly 14 to extend and retract. One part of the bellows cover assembly 14 is located on the right side of the mounting plate 16, and the other part is located on the left side of the mounting plate 16. The extension and retraction movements of the bellows cover assemblies 14 on the left and right sides of the mounting plate 16 are opposite, realizing linkage. The first sliding joint 143 is slidably mounted on the first guide rail 12, and the second sliding joint 144 is slidably mounted on the second guide rail 13. The first motion module 15 is connected to the bellows cover assembly 14 through the mounting plate 16 so that the bellows cover assembly 14 extends and retracts along the extension direction of the first guide rail 12 or the second guide rail 13. When the bellows cover assembly 14 extends and retracts, it also uses the first guide rail 12 and the second guide rail 13 to achieve support and limit guidance, which improves the stability and reliability of the extension and retraction movement of the bellows cover assembly 14. The bellows cover assembly 14 does not need to be provided with an additional support frame to achieve support and limit guidance, and the overall structure of the testing equipment is simpler. Thus, by setting the first guide rail 12 and the second guide rail 13, this application can simultaneously support and limit the sliding movement of the mounting plate 16 and the telescopic movement of the bellows cover assembly 14, thereby improving the stability and reliability of the movement of the mounting plate 16 and the bellows cover assembly 14.

[0066] Optionally, the testing equipment also includes a first limiting member 17 and a second limiting member 18. Both the first limiting member 17 and the second limiting member 18 are elongated sheet metal parts, extending horizontally in the left-right direction. The first limiting member 17 is positioned above the first guide rail 12, forming a first limiting groove 19 between them. The second limiting member 18 is positioned above the second guide rail 13, forming a second limiting groove 20 between them. The first sliding part 143 of the bellows cover assembly 14 is installed in the first limiting groove 19, and the second sliding part 144 of the bellows cover assembly 14 is installed in the second limiting groove 20. When the first motion module 15 is installed on the side wall 111, the first limiting member 17 and the second limiting member 18 can restrict the degrees of freedom of the bellows cover assembly 14 in the Y-axis and Z-axis directions, preventing the bellows cover assembly 14 from falling off and allowing the bellows cover assembly 14 to extend and retract along the X-axis.

[0067] In one embodiment, the crossbeam 11 has a sidewall 111 located on the front side of the crossbeam 11. A first guide rail 12 and a second guide rail 13 are spaced apart from top to bottom on the sidewall 111. A first slider 45 connected to a mounting plate 16 slides on the first guide rail 12, and a second slider 46 connected to the mounting plate 16 slides on the second guide rail 13. A first motion module 15 is drive-connected to the mounting plate 16. The mounting plate 16 is mounted on the sidewall 111. Compared to existing testing equipment that places the mounting plate 16 on the top of the crossbeam 11, this application mounts the mounting plate 16 on the side of the crossbeam 11, facilitating the installation of a third motion module according to testing needs. The output end of the third motion module moves vertically up and down.

[0068] Furthermore, the crossbeam 11 is provided with a plurality of pressure blocks 21 spaced apart along the extension direction of the first guide rail 12. The first limiting member 17 is installed on the crossbeam 11 through each pressure block 21. Each pressure block 21 is located between the first limiting member 17 and the first guide rail 12 and abuts against the first guide rail 12. The pressure blocks 21 can restrict the degree of freedom of the first guide rail 12. The number of pressure blocks 21 is set according to the length of the first guide rail 12. Specifically, the first limiting member 17 and the pressure block 21 are bolted to the mounting top 114 of the crossbeam 11, so that the first guide rail 12 can be mounted on the upper end of the side wall 111 and spaced apart from the first limiting member 17 to form the first limiting groove 19. The second guide rail 13 is mounted at the lower end of the side wall 111, increasing the distance between the first guide rail 12 and the second guide rail 13, thereby allowing a larger mounting plate 16 to be installed, improving the rigidity and load-bearing capacity of the mounting plate 16, making the sliding of the mounting plate 16 smoother, and also making the space between the first guide rail 12 and the second guide rail 13 larger, which facilitates the installation of the first motion module 15.

[0069] Optionally, the first guide rail 12 is provided with a first guide groove 121 and a second guide groove 131. The first sliding part 143 is slidably disposed in the first guide groove 121 and the second sliding part 144 is slidably disposed in the second guide groove 131. The engagement of the first sliding part 143 with the first guide groove 121 and the engagement of the first sliding part 143 with the second guide groove 131 realizes the limiting and guiding of the extension and retraction of the bellows cover assembly 14.

[0070] Furthermore, the first limiting member 17 is provided with a third guide groove 171, the first guide groove 121 and the third guide groove 171 are disposed opposite to each other on the inner wall of the first limiting groove 19, the second guide groove 131 is disposed on the inner wall of the second limiting groove 20, the first sliding part 143 of the bellows cover assembly 14 is provided with a first locking platform 1431 sliding on the first guide groove 121 and a third locking platform 1432 sliding on the third guide groove 171, and the second sliding part 144 is provided with a second locking platform 1441 sliding on the second guide groove 131. Specifically, the first guide groove 121 is set upwards, the third guide groove 171 is set downwards, the second guide groove 131 is set upwards, the first locking platform 1431 and the third locking platform 1432 extend downwards, and the second locking platform 1441 extends upwards. Through the engagement of the first locking platform 1431 with the first guide groove 121, the engagement of the second locking platform 1441 with the second guide groove 131, and the engagement of the third locking platform 1432 with the third guide groove 171, the degrees of freedom of the bellows cover assembly 14 in the Y-axis and Z-axis directions are restricted, and only the degree of freedom in the X-axis direction is released. The bellows cover assembly 14 is not easy to slide out and has high reliability.

[0071] In one embodiment, the first guide groove 121 is located on the upper end face of the first guide rail 12, the second guide groove 131 is located on the upper end face of the second guide rail 13, and the second mounting plate 1441 is located at the lower end of the bellows cover assembly 14 and extends downward relative to the lower end of the bellows cover assembly 14. The crossbeam 11 also has a mounting base 112. The first guide rail 12 and the second guide rail 13 both extend along a first horizontal straight line direction. The mounting base 112 is provided with a first mounting seat 22 and a second mounting seat 23, both for mounting on the second motion module to move the crossbeam 11 along the second horizontal straight line direction. The first horizontal straight line direction is perpendicular to the second horizontal straight line direction. The first mounting seat 22 and the second mounting seat 23 are spaced apart along the first horizontal straight line direction on the mounting base 112. When the imaging assembly is mounted on the mounting plate 16, the second motion module can be mounted on the mounting plate 16. The imaging assembly is mounted on the output end of the second motion module, and the output end of the second motion module can drive the imaging assembly to move up and down.

[0072] Since the crossbeam 11 is mounted on the second motion module via both the first mounting base 22 and the second mounting base 23, the crossbeam 11 forms a gantry structure on the second motion module, enabling the crossbeam 11 to move in both the X-axis and Y-axis directions. To facilitate the mounting of the crossbeam 11 on the second motion module, the first mounting base 22 and the second mounting base 23 are located on the lower end face of the crossbeam 11. Simultaneously, the first mounting base 22 and the second mounting base 23 extend at least partially forward and / or backward, i.e., protruding forward in front of the side wall 111, to facilitate the connection of the first mounting base 22 and the second mounting base 23 to the second motion module using mounting bolts. Currently, during installation, the lower end of the bellows assembly 14 interferes with the forward-protruding portions of the first mounting base 22 and the second mounting base 23. In this application, the second guide groove 131 is disposed on the upper end surface of the second guide rail 13, and the second mounting plate 1441 is located at the lowest end of the bellows cover assembly 14, so that the entire bellows cover assembly 14 is located above the second guide rail 13, preventing the lower end of the bellows cover assembly 14 from interfering with the first mounting base 22 and the second mounting base 23 when the bellows cover assembly 14 is extended or retracted.

[0073] Due to space constraints in the work area, the second motion module includes a second lead screw, a second nut block mounted on the second lead screw, and two support columns spaced apart along the X-axis. The left and right ends of the crossbeam 11 are slidably mounted on the two support columns via a first mounting base 22 and a second mounting base 23, respectively. The second lead screw is mounted on one of the support columns, and the second nut block is connected to the crossbeam 11 in a transmission manner.

[0074] Optionally, the testing equipment also includes a first positioning seat 42 and a second positioning seat 43. The second mounting seat 23 is mounted on the crossbeam 11 via the first positioning seat 42 and the second positioning seat 43. The first positioning seat 42 prevents the second mounting seat 23 from moving along the X-axis, and the second positioning seat 43 prevents the second mounting seat 23 from moving along the Y-axis. The second mounting seat 23 is more stable under the constraints of the first positioning seat 42 and the second positioning seat 43, which helps to improve the stability of the crossbeam, thereby improving the imaging stability and testing accuracy of the testing equipment.

[0075] Furthermore, since the connection position between the first mounting base 22 and the side wall 111 is prone to interference with the second guide rail 13, there is a certain distance between the two ends of the second guide rail 13 and the end face of the side wall 111. For ease of processing, the length of the first guide rail 12 can be set to be consistent with the length of the second guide rail 13. To ensure the stroke of the first motion module, the testing equipment also includes a first extension rail 24 mounted on the side wall 111 and connected to the first guide rail 12, and a second extension rail 25 mounted on the side wall 111 and connected to the second guide rail 13. The first extension rail 24 is provided with a fourth guide groove 241 communicating with the first guide groove 121, and the second extension rail 25 is provided with a fifth guide groove 251 communicating with the second guide groove 131. The first extension rail 24 and the second extension rail 25 provide Z-axis support for the bellows cover assembly 14 and prevent the bellows cover assembly 14 from detaching.

[0076] The lower end of the second extension rail 25 is higher than the lower end of the second guide rail 13, so that the lower end face of the second extension rail 25 and one end of the second guide rail 13 together form a clearance groove 26, and at least part of the first mounting seat 22 extends upward into the clearance groove 26. The lower end of the second guide rail 13 is flush with the lower end of the crossbeam 11. The first mounting base 22 is close to the left end of the crossbeam 11, and the second mounting base 23 is close to the right end of the crossbeam 11. The driver 153 of the first linear drive module is arranged above the second mounting base 23. The driver 153 is located at the right end of the first lead screw 151 and the second guide rail 13. The driver 153 is located outside the stroke of the second bellows cover 142 of the bellows cover assembly 14. The second mounting base 23 located at the right end of the crossbeam 11 is also located outside the stroke of the second bellows cover 142 of the bellows cover assembly 14. Therefore, the right end of the second bellows cover 142 will not interfere with the second mounting base 23. However, the driver 153 will affect the total stroke of the bellows cover assembly 14. In order to increase the total stroke of the bellows cover assembly 14, the left end of the bellows cover assembly 14 extends to the left end of the crossbeam 11 and is directly above the first mounting base 22. To improve the connection strength of the first mounting base 22, it is generally necessary to increase the thickness of the first mounting base 22, that is, the front end of the first mounting base 22 protrudes upward, and the lower end of the second extension rail 25 is higher than the lower end of the second guide rail 13, so as to avoid interference between the second extension rail 25 and the first mounting base 22.

[0077] In one embodiment, the mounting plate 16 is provided with a first sensing element 27 for triggering the first photoelectric sensor, and the first mounting base 22 and / or the second mounting base 23 are provided with a second sensing element 28 for triggering the second photoelectric sensor, facilitating the control of the movement of the detection device. Specifically, the first photoelectric sensor is mounted on the crossbeam 11. When the mounting plate 16 slides, the position information of the mounting plate 16 is obtained through the first photoelectric sensor and the first sensing element 27, facilitating the control of the movement of the mounting plate 16 in the X-axis direction. The second mounting base 23 is provided with a second sensing element 28 for triggering the second photoelectric sensor, and the second motion module is equipped with a second photoelectric sensor. The position information of the mounting plate 16 is obtained through the second photoelectric sensor and the second sensing element 28, facilitating the control of the movement of the crossbeam 11 in the Y-axis direction.

[0078] Optionally, the testing equipment also includes a third motion module disposed on the mounting plate 16. The third motion module is not shown in the figure. The output end of the third motion module slides vertically relative to the mounting plate 16, and the output end of the third motion module can move along the Z-axis, improving the flexibility of the testing equipment.

[0079] In one embodiment, the bellows assembly 14 includes a first bellows cover 141 and a second bellows cover 142. The first motion module 15 includes a first lead screw 151 rotatably mounted on the side wall 111, a first nut block mounted on the first lead screw 151 and connected to the mounting plate 16, and a driver 153 driven by the first lead screw 151. The driver 153 is a motor. The first lead screw 151 is located between the first guide rail 12 and the second guide rail 13. The first bellows cover 141 and the second bellows cover 142 are spaced apart along the axial direction of the first lead screw 151. The first guide rail 12 and the second guide rail 13 are high-precision guide rails symmetrically distributed on the upper and lower sides of the first lead screw. The high-precision first lead screw is centrally located, with a small off-center load and high precision, thus making the overall structure of the detection equipment compact and lightweight.

[0080] The first bellows cover 141 also has a first connecting end 1411 and a first movable end 1412 arranged at intervals along the axial direction of the first lead screw 151. The second bellows cover 142 also has a second connecting end 1421 and a second movable end 1422 arranged at intervals along the axial direction of the first lead screw 151. Both the first connecting end 1411 and the second connecting end 1421 are connected to the crossbeam 11. The mounting plate 16 is located between the first movable end 1412 and the second movable end 1422 and covers the area between the first bellows cover 141 and the second bellows cover 142. Both the first movable end 1412 and the second movable end 1422 are connected to the mounting plate 16. The first lead screw 151 is driven to rotate by a motor, causing the first nut block to drive the mounting plate 16 to move along the X-axis. When the mounting plate 16 moves along the X-axis, the first bellows cover 141 and the second bellows cover 142 are linked together to protect the first lead screw 151.

[0081] The first motion module 15 also includes a support 154 mounted on the side wall 111 and a ball bearing 155 mounted on the support 154. One end of the first lead screw 151 is mounted on the ball bearing 155, and the other end of the first lead screw 151 is connected to the output shaft of the driver 153 via a coupling 156. The ball bearing 155 has a small clearance fit within the support 154, and the ball bearing 155 can make a certain displacement along the axial direction of the support 154 in order to absorb the influence of thermal expansion and contraction displacement of the first lead screw.

[0082] Optionally, the testing equipment also includes a first connector 29 and a second connector 30. Both the first connector 29 and the second connector 30 are sheet metal parts, and are spaced apart along the axial direction of the first lead screw 151 on the crossbeam 11. The first connector 29 is located at the left end of the first lead screw 151. The first guide rail 12, the second guide rail 13, the first limiting member 17, the second limiting member 18, and the first lead screw 151 are all located between the first connector 29 and the second connector 30. The first connecting end 1411 is connected to the first limiting member 17, and the second connecting end 1421 is connected to the second limiting member 18. The first connector 29 and the second connector 30 fix and limit the left and right ends of the bellows cover assembly 14.

[0083] Optionally, the testing equipment also includes a third connector 31 and a fourth connector 32, both of which are sheet metal parts. The mounting plate 16 is connected to the first movable end 1412 via the third connector 31, and to the second movable end 1422 via the fourth connector 32. The first bellows cover 141 and the second bellows cover 142 are connected to the mounting plate 16 via the third connector 31 and the fourth connector 32.

[0084] Furthermore, the first extension rail 24, the second extension rail 25, the first limiting member 17, the second limiting member 18, the first connector 29, the second connector 30, the fourth connector 32, and the fourth connector 32 are all bolted to the crossbeam 11 for easy installation and disassembly. For the inspection of the PCB upper surface, since there is no contamination from falling foreign objects, the bellows cover assembly 14 is not required for protection. The inspection equipment of this application can be used for the inspection of the PCB upper surface by removing the bellows cover assembly 14, the first extension rail 24, the second extension rail 25, the first limiting member 17, the second limiting member 18, the first connector 29, the second connector 30, the fourth connector 32, and the fourth connector 32, thus maximizing the versatility of the inspection equipment.

[0085] In one embodiment, the detection device further includes a first cable chain 33 for routing cables for the first motion module 15. The crossbeam 11 also has a cable routing section 113 located on the rear end face of the crossbeam 11. The cable routing section 113 is opposite to the side wall 111, and the first cable chain 33 is mounted on the cable routing section 113, which not only facilitates cable routing for the first motion module 15 but also reduces the space occupied by the detection device in the height direction.

[0086] Optionally, the testing equipment also includes a first bracket 34 located on the wiring section 113 and an adapter 35 connected to the mounting plate 16. The first cable chain 33 has a third connecting end connected to the first bracket 34 and a third movable end connected to the adapter 35. The adapter 35 is connected to the third movable end via a bracket 44. When the mounting plate 16 slides, the third movable end slides together to ensure the connection of the wiring.

[0087] Furthermore, the testing equipment also includes a cover plate 36. The cover plate 36 is installed on the adapter 35 and together with the adapter 35 forms a wiring channel, and the cover plate 36 serves to prevent dust.

[0088] In one embodiment, the testing equipment further includes a second bracket 37 and a second cable chain 38 for routing the wiring of the second motion module. The second cable chain 38 is mounted on the crossbeam 11 via the second bracket 37, and the second cable chain 38 and the crossbeam 11 are arranged sequentially along the extension direction of the first guide rail 12 or the second guide rail 13. The second cable chain 38 facilitates the routing of the wiring of the second motion module. Due to the need for bottom surface testing of the circuit board, a crossbeam 11 that can slide along the X and Y axes needs to be arranged on the bottom surface of the PCB. The second cable chain 38 is arranged on the left side of the crossbeam 11 to facilitate communication between the right side of the crossbeam 11 and the second lead screw drive of the second motion module. Moreover, it can reduce the space occupied by the testing equipment in the height direction. When the testing equipment is used on a gantry structure, the height dimension of the gantry structure is designed to be as small as possible to avoid interference with the frame.

[0089] Furthermore, the first drag chain 33, the second drag chain 38, and the crossbeam 11 are roughly in a horizontal plane, which can ensure that the overall height of the testing equipment has a specific advantage and can meet the spatial layout constraints in the height direction.

[0090] Optionally, the detection device also includes a first anti-collision pad 39 and a second anti-collision pad 40 spaced apart on the side wall 111. The mounting plate 16 is located between the first anti-collision pad 39 and the second anti-collision pad 40, and both the first anti-collision pad 39 and the second anti-collision pad 40 are located on the moving path of the mounting plate 16. The first anti-collision pad 39 and the second anti-collision pad 40 are mounted on the side wall 111 by pads. The first anti-collision pad 39 and the second anti-collision pad 40 can limit the mounting plate 16, and the buffering effect of the first anti-collision pad 39 and the second anti-collision pad 40 reduces the damage caused by the impact when the mounting plate 16 slides.

[0091] In one embodiment, a cable sheath 41 is installed on the crossbeam 11. The cable sheath 41 is located at the top of the mounting 114 to facilitate cable routing and protect the cable from being cut by the sharp edge of the crossbeam 11.

[0092] Furthermore, the crossbeam 11 is made of aluminum profile and manufactured using an aluminum profile extrusion process. The crossbeam 11 has high rigidity and relatively light weight, making it suitable for use in high-precision equipment. The crossbeam 11 has a rectangular outer profile along its extension direction perpendicular to the first guide rail 12. The length of the rectangle in the vertical direction and the width in the horizontal direction are both 180mm to 280mm. Increasing the rigidity of the gantry crossbeam 11 can improve the accuracy of the equipment. The aluminum profile crossbeam 11 used in this application has a large cross-sectional dimension, and multiple reinforcing ribs are provided between adjacent sides of the rectangle, resulting in high overall structural rigidity.

[0093] The testing equipment also includes a second motion module, which is connected to the crossbeam 11 to drive the crossbeam 11 to move along the Y-axis.

[0094] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A testing device, characterized in that, include: Crossbeam (11); The first guide rail (12) and the second guide rail (13) are fixedly installed on the side wall of the crossbeam (11). The first guide rail (12) and the second guide rail (13) are spaced apart vertically and arranged in parallel. The accordion cover assembly (14) has a first sliding part (143) and a second sliding part (144); The first motion module (15) is installed on the crossbeam (11) and located between the first guide rail (12) and the second guide rail (13); Mounting plate (16) is slidably mounted on the first guide rail (12) and the second guide rail (13) and connected to the bellows cover assembly (14); The first sliding joint (143) is slidably mounted on the first guide rail (12), and the second sliding joint (144) is slidably mounted on the second guide rail (13). The first motion module (15) is connected to the mounting plate (16) in a transmission manner. By driving the mounting plate (16) to move, the bellows cover assembly (14) is driven to extend and retract along the extension direction of the first guide rail (12) and the second guide rail (13).

2. The detection device according to claim 1, characterized in that, It also includes a first limiting member (17) and a second limiting member (18); the first limiting member (17) is disposed above the first guide rail (12) and forms a first limiting groove (19) between the first guide rail (12); the second limiting member (18) is disposed above the second guide rail (13) and forms a second limiting groove (20) between the second guide rail (13); the first sliding part (143) of the bellows cover assembly (14) is installed in the first limiting groove (19); and the second sliding part (144) of the bellows cover assembly (14) is installed in the second limiting groove (20).

3. The detection device according to claim 2, characterized in that, The first guide rail (12) is provided with a first guide groove (121), the second guide rail (13) is provided with a second guide groove (131), the first sliding part (143) is slidably disposed in the first guide groove (121), and the second sliding part (144) is slidably disposed in the second guide groove (131).

4. The detection device according to claim 3, characterized in that, The first limiting member (17) is provided with a third guide groove (171). The first guide groove (121) and the third guide groove (171) are disposed opposite to each other on the inner wall of the first limiting groove (19). The second guide groove (131) is disposed on the inner wall of the second limiting groove (20). The first sliding part (143) of the bellows cover assembly (14) is provided with a first locking platform (1431) sliding on the first guide groove (121) and a third locking platform (1432) sliding on the third guide groove (171). The second sliding part (144) is provided with a second locking platform (1441) sliding on the second guide groove (131).

5. The detection device according to claim 4, characterized in that, The crossbeam (11) also has a mounting base (112), the first guide rail (12) and the second guide rail (13) both extend along a first horizontal straight line direction, the mounting base (112) is provided with a first mounting seat (22) and a second mounting seat (23) for mounting on the second motion module to move the crossbeam (11) along a second horizontal straight line direction, the first horizontal straight line direction is perpendicular to the second horizontal straight line direction, the first mounting seat (22) and the second mounting seat (23) are spaced apart along the first horizontal straight line direction on the mounting base (112), the first guide groove (121) is located on the upper end face of the first guide rail (12), the second guide groove (131) is located on the upper end face of the second guide rail (13), and the second mounting plate (1441) is located at the lower end of the bellows cover assembly (14) and extends downward relative to the lower end of the bellows cover assembly (14).

6. The detection device according to claim 5, characterized in that, It also includes a first extension rail (24) installed on the side wall (111) of the crossbeam (11) and connected to the first guide rail (12), and a second extension rail (25) installed on the side wall (111) of the crossbeam (11) and connected to the second guide rail (13); the first extension rail (24) is provided with a fourth guide groove (241) communicating with the first guide groove (121), and the second extension rail (25) is provided with a fifth guide groove (251) communicating with the second guide groove (131). The lower end of the second extension rail (25) is higher than the lower end of the second guide rail (13), and the lower end face of the second extension rail (25) and one end of the second guide rail (13) together form a clearance groove (26). At least part of the first mounting seat (22) extends upward into the clearance groove (26).

7. The detection device according to claim 2, characterized in that, The crossbeam (11) is provided with a plurality of pressure blocks (21) spaced apart along the extension direction of the first guide rail (12); the first limiting member (17) is installed on the crossbeam (11) through each of the pressure blocks (21), and each of the pressure blocks (21) is located between the first limiting member (17) and the first guide rail (12) and abuts against the first guide rail (12).

8. The testing equipment according to any one of claims 1 to 7, characterized in that, The accordion assembly (14) includes a first accordion cover (141) and a second accordion cover (142); the first motion module (15) includes a first lead screw (151) rotatably mounted on the side wall (111) of the crossbeam (11); the first accordion cover (141) and the second accordion cover (142) are spaced apart along the axial direction of the first lead screw (151); The first bellows cover (141) also has a first connecting end (1411) and a first movable end (1412) arranged at intervals along the axial direction of the first lead screw (151), and the second bellows cover (142) also has a second connecting end (1421) and a second movable end (1422) arranged at intervals along the axial direction of the first lead screw (151). The first connecting end (1411) and the second connecting end (1421) are both connected to the crossbeam (11). The mounting plate (16) is located between the first movable end (1412) and the second movable end (1422), and the first movable end (1412) and the second movable end (1422) are both connected to the mounting plate (16).

9. The testing equipment according to any one of claims 1 to 7, characterized in that, It also includes a first cable chain (33) for routing the first motion module (15); the crossbeam (11) also has a routing section (113) which is opposite to the side wall (111) of the crossbeam (11), and the first cable chain (33) is mounted on the routing section (113).

10. The detection device according to any one of claims 1 to 7, characterized in that, It also includes a second drag chain (38) for routing the cables of the second motion module; the second drag chain (38) is mounted on the crossbeam (11), and the second drag chain (38) and the crossbeam (11) are arranged sequentially along the extension direction of the first guide rail (12) or the second guide rail (13).

11. The detection device according to any one of claims 1 to 7, characterized in that, It also includes a first anti-collision pad (39) and a second anti-collision pad (40) spaced apart on the side wall (111) of the crossbeam (11); the mounting plate (16) is located between the first anti-collision pad (39) and the second anti-collision pad (40), and both the first anti-collision pad (39) and the second anti-collision pad (40) are located on the moving path of the mounting plate (16).

12. The testing equipment according to any one of claims 1 to 7, characterized in that, The crossbeam (11) is made of aluminum profile. The crossbeam (11) has a rectangular cross section along the extension direction perpendicular to the first guide rail (12). Multiple reinforcing ribs are provided between adjacent sides of the rectangle.

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