Circuit board testing device

Abstract

The invention discloses a circuit board testing device, and relates to the technical field of circuit board testing. The first adjusting assembly comprises a first bottom adjusting part and a second bottom adjusting part, and the distance between the first bottom adjusting part and the second bottom adjusting part is adjusted through the first driving assembly; the two positioning side plates are symmetrically arranged and connected to the tops of the first bottom adjusting piece and the second bottom adjusting piece correspondingly. Each positioning side plate is provided with a second adjusting assembly, each second adjusting assembly comprises two side adjusting frames distributed in the vertical direction, the distance between the two side adjusting frames is adjusted through a second driving assembly, each side adjusting frame is connected with a conveying belt assembly, and the conveying belt assemblies are suitable for conveying circuit boards; the detection device is connected to the fixing frame through the telescopic structure, can position and test circuit boards with different widths and thicknesses, can flexibly adapt to the circuit boards with different sizes, and is good in universality.

Description

Technical Field

[0001] This application relates to the field of circuit board testing technology, and more particularly to circuit board testing apparatus. Background Technology

[0002] A PCB (Printed Circuit Board) is an essential electronic component. Through specific circuit wiring, it connects various electronic components such as resistors, capacitors, and chips, creating a stable electrical connection path for electronic devices. It carries the crucial functions of signal transmission and power distribution, and is the fundamental support for the normal operation of electronic devices. From everyday smartphones and tablets to complex industrial control systems and communication base stations, almost all electronic devices rely on PCBs, and their quality directly affects the performance and stability of these devices.

[0003] Electronic devices come in a wide variety of types, and PCB circuit board sizes vary greatly, from tiny wearable device circuit boards to large server motherboards. The testing equipment for related technologies is difficult to flexibly handle circuit boards of different sizes, and often requires customized testing equipment for specific board types, which is costly and inefficient. This leads to the need to frequently change testing equipment, wasting a lot of time and resources. Summary of the Invention

[0004] This application provides a circuit board testing apparatus to at least address the problem that testing apparatuses in related technologies are difficult to flexibly handle circuit boards of different sizes.

[0005] This application provides a circuit board testing device, including:

[0006] Fixture;

[0007] The first adjustment component includes a first bottom adjustment member and a second bottom adjustment member, and the distance between the first bottom adjustment member and the second bottom adjustment member is adjusted by a first drive component;

[0008] Two positioning side plates are provided symmetrically and are respectively connected to the top of the first bottom adjusting member and the second bottom adjusting member;

[0009] The second adjustment assembly is provided for each of the positioning side plates. The second adjustment assembly includes two side adjustment frames distributed in the vertical direction. The distance between the two side adjustment frames is adjusted by the second drive assembly. Each side adjustment frame is connected to a conveyor belt assembly, which is adapted to convey the circuit board.

[0010] The detection device is connected to the fixed frame via a telescopic structure.

[0011] According to this application, when a circuit board needs to be tested, a conveyor belt assembly transports the circuit board. One side of the circuit board is located between two conveyor belt assemblies on two side adjustment frames on that side, and the other side of the circuit board is located between two conveyor belt assemblies on two side adjustment frames on the other side. Four conveyor belt assemblies work together to transport the circuit board. Two conveyor belt assemblies on the same side transport and clamp the circuit board to one side. After the circuit board is clamped and positioned by the four conveyor belt assemblies, the testing device adjusts its height via a telescopic structure to test the circuit board. By setting a first adjustment assembly, which includes a first bottom adjustment member and a second bottom adjustment member, the distance between the first bottom adjustment member and the second bottom adjustment member is adjusted by a first drive assembly. Since two positioning side plates are respectively set on the first bottom adjustment member and the second bottom adjustment member, when the first drive assembly adjusts the distance between the first bottom adjustment member and the second bottom adjustment member, the distance between the two positioning side plates will be adjusted synchronously. Each positioning side plate is connected to two side adjustment frames, and each side adjustment frame is connected to a conveyor belt assembly. Therefore, the spacing between the conveyor belt assemblies on both sides will be adjusted synchronously, thus making it suitable for testing circuit boards of different widths. By incorporating a second adjustment component, which includes two vertically distributed side adjustment frames, the distance between which is adjusted by a second drive component, and since each side adjustment frame is connected to a conveyor belt assembly, adjusting the vertical distance between the two side adjustment frames by the second drive component synchronously adjusts the distance between the two conveyor belt assemblies on the same side. This allows for the transport and clamping of circuit boards of varying thicknesses. Therefore, this circuit board testing device can position and test circuit boards of different widths and thicknesses, flexibly handling circuit boards of different sizes and demonstrating good versatility. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments 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.

[0013] Figure 1 A schematic diagram of a circuit board testing device provided in an embodiment of this application. Figure 1 ;

[0014] Figure 2 A schematic diagram of a circuit board testing device provided in an embodiment of this application. Figure 2 ;

[0015] Figure 3 A schematic diagram of a circuit board testing device provided in an embodiment of this application after removing the fixing frame, turntable and fourth drive motor;

[0016] Figure 4 This is a schematic diagram showing the first adjustment component and the positioning side plate connected together.

[0017] Figure 5 This is a partial structural schematic diagram of a circuit board testing device provided in an embodiment of this application;

[0018] Figure 6 This is a schematic diagram of a conveyor belt assembly;

[0019] Figure 7 This is a schematic diagram showing the assembly of the connecting sleeve, rotating frame, and auxiliary pulley.

[0020] The above figures include the following reference numerals:

[0021] 1. Fixed frame; 101. Bottom fixed plate; 102. Support leg; 103. Horizontal boom; 2. First bottom adjusting component; 201. Sliding groove; 3. Second bottom adjusting component; 4. Positioning side plate; 401. First mounting part; 402. Second mounting part; 403. Mounting plate; 5. Side adjusting frame; 501. Horizontal frame; 502. Vertical frame; 6. Telescopic structure; 7. Detection device; 8. First drive motor; 9. One-way screw; 10. Second drive motor; 11. 12. Bidirectional screw; 12. Connecting sleeve; 1201. Main body; 1202. Protrusion; 13. Rotating frame; 1301. Mounting groove; 14. Auxiliary pulley; 15. First baffle; 16. Drive pulley; 17. Belt body; 18. Third drive motor; 19. Rotating rod; 20. Rotating roller; 21. Conveyor belt; 22. Second baffle; 23. Elastic element; 24. Adaptive slider; 25. Turntable; 2501. Slide groove; 26. Fourth drive motor; 27. Moving block. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0023] It should be noted 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," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] To enable those skilled in the art to better understand the solution of this application, the following is combined with... Figures 1 to 7 This application will now be described in further detail.

[0025] The embodiments of this application provide a circuit board testing device, and the circuit board testing device is described in detail in conjunction with its structure and working principle.

[0026] In one embodiment, the circuit board testing device includes a mounting bracket 1, a first adjustment component, a positioning side plate 4, a second adjustment component, and a testing device 7.

[0027] The first adjustment assembly includes a first bottom adjustment member 2 and a second bottom adjustment member 3. The distance between the first bottom adjustment member 2 and the second bottom adjustment member 3 is adjusted by a first drive assembly. Two positioning side plates 4 are symmetrically arranged and are respectively connected to the top of the first bottom adjustment member 2 and the second bottom adjustment member 3. Each positioning side plate 4 is provided with a set of second adjustment assemblies. The second adjustment assembly includes two side adjustment frames 5 distributed in the vertical direction. The distance between the two side adjustment frames 5 is adjusted by a second drive assembly. Each side adjustment frame 5 is connected to a conveyor belt assembly, which is suitable for conveying circuit boards. The detection device 7 is connected to the fixed frame 1 through a telescopic structure 6.

[0028] In this embodiment, when the circuit board needs to be tested, the conveyor belt assembly transports the circuit board. One side of the circuit board is located between two conveyor belt assemblies on two side adjustment frames 5 on that side, and the other side of the circuit board is located between two conveyor belt assemblies on two side adjustment frames 5 on the other side. The four conveyor belt assemblies work together to transport the circuit board. The two conveyor belt assemblies on the same side transport and clamp the circuit board to one side. After the circuit board is clamped and positioned by the four conveyor belt assemblies, the detection device 7 adjusts its height through the telescopic structure 6 to detect the circuit board. By setting a first adjustment assembly, which includes a first bottom adjustment member 2 and a second bottom adjustment member 3, the distance between the first bottom adjustment member 2 and the second bottom adjustment member 3 is adjusted by a first drive assembly. Since the two positioning side plates 4 are respectively set on the first bottom adjustment member 2 and the second bottom adjustment member 3, when the first drive assembly adjusts the distance between the first bottom adjustment member 2 and the second bottom adjustment member 3, the distance between the two positioning side plates 4 will be adjusted synchronously. Each positioning side plate 4 is connected to two side adjustment frames 5, and each side adjustment frame 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will be adjusted synchronously, thus making it suitable for testing circuit boards of different widths. By incorporating a second adjustment component, which includes two vertically distributed side adjustment frames 5, the distance between the two side adjustment frames 5 is adjusted by a second drive component. Since each side adjustment frame 5 is connected to a conveyor belt assembly, when the second drive component adjusts the vertical distance between the two side adjustment frames 5, the distance between the two conveyor belt assemblies on the same side is adjusted synchronously. This allows for the conveying and clamping positioning of circuit boards of different thicknesses. Therefore, this circuit board testing device can position and test circuit boards of different widths and thicknesses, flexibly handling circuit boards of different sizes and exhibiting good versatility.

[0029] Specifically in one embodiment, such as Figure 4 As shown, the first bottom adjusting member 2 is L-shaped, and a positioning side plate 4 is connected to the top of the first bottom adjusting member 2.

[0030] Specifically in one embodiment, such as Figure 4As shown, the second bottom adjusting member 3 is L-shaped, and a positioning side plate 4 is connected to the top of the second bottom adjusting member 3.

[0031] In one embodiment, the first drive assembly includes a one-way screw 9 and a first drive motor 8. The one-way screw 9 passes through the first bottom adjusting member 2 and is threadedly connected to the second bottom adjusting member 3, and the one-way screw 9 is rotatably engaged with the first bottom adjusting member 2; the first drive motor 8 is fixed to the first bottom adjusting member 2 and connected to the one-way screw 9.

[0032] In this embodiment, when the first drive motor 8 is working, it drives the one-way screw 9 to rotate. The one-way screw 9 rotates in conjunction with the first bottom adjusting member 2, and the first bottom adjusting member 2 remains stationary. The one-way screw 9 is connected to the second bottom adjusting member 3 by a thread, which causes the second bottom adjusting member 3 to move, thereby changing the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2. Since the two positioning side plates 4 are respectively set on the first bottom adjusting member 2 and the second bottom adjusting member 3, when the distance between the first bottom adjusting member 2 and the second bottom adjusting member 3 changes, the distance between the two positioning side plates 4 will be adjusted synchronously. Each positioning side plate 4 is connected to two side adjusting brackets 5, and each side adjusting bracket 5 is connected to a conveyor belt assembly. Therefore, the spacing between the conveyor belt assemblies on both sides will be adjusted synchronously, thus making it suitable for testing circuit boards of different widths.

[0033] It should be noted that the first drive motor 8 can rotate forward and backward. When the first drive motor 8 rotates forward, it drives the second bottom adjustment member 3 to move away from the first bottom adjustment member 2, increasing the distance between the second bottom adjustment member 3 and the first bottom adjustment member 2. Since the two positioning side plates 4 are respectively set on the first bottom adjustment member 2 and the second bottom adjustment member 3, the increase in the distance between the second bottom adjustment member 3 and the first bottom adjustment member 2 will cause the distance between the two positioning side plates 4 to increase synchronously. Each positioning side plate 4 is connected to two side adjustment brackets 5, and each side adjustment bracket 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will increase synchronously, thus making it suitable for testing circuit boards with a wider width. When the first drive motor 8 reverses, it drives the second bottom adjustment member 3 to move closer to the first bottom adjustment member 2, reducing the distance between the second bottom adjustment member 3 and the first bottom adjustment member 2. Since the two positioning side plates 4 are respectively set on the first bottom adjustment member 2 and the second bottom adjustment member 3, when the distance between the second bottom adjustment member 3 and the first bottom adjustment member 2 decreases, the distance between the two positioning side plates 4 will decrease synchronously. Each positioning side plate 4 is connected to two side adjustment frames 5, and each side adjustment frame 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will decrease synchronously, making it suitable for testing circuit boards with smaller widths.

[0034] In one specific embodiment, the first bottom adjusting member 2 is provided with a mounting through hole, and the one-way screw 9 passes through the mounting through hole and can rotate within the mounting through hole.

[0035] In one specific embodiment, the second bottom adjusting member 3 is provided with a threaded hole, and the one-way screw 9 is engaged with the threaded hole.

[0036] In one specific embodiment, the one-way screw 9 is fixedly connected to the output end of the first drive motor 8.

[0037] In one specific embodiment, the first drive motor 8 is fixed to the outer wall of the first bottom adjustment member 2, which is opposite to the second bottom adjustment member 3.

[0038] In one embodiment, the first bottom adjusting member 2 and the second bottom adjusting member 3 are slidably engaged, which can guide and limit the movement of the second bottom adjusting member 3.

[0039] In one specific embodiment, the first bottom adjusting member 2 is provided with a sliding groove 201, and a portion of the second bottom adjusting member 3 is slidably disposed in the sliding groove 201. The sliding groove 201 can guide and limit the movement of the second bottom adjusting member 3.

[0040] More specifically, the cross-section of the sliding groove 201 is square, and the part of the second bottom adjusting member 3 located in the sliding groove 201 is also square. The sliding groove 201 can also restrict the rotation of the second bottom adjusting member 3, so that when the first drive motor 8 drives the one-way screw 9 to rotate, the second bottom adjusting member 3 can only move under the drive of the one-way screw 9 and does not rotate.

[0041] More specifically, the first bottom adjusting member 2 is a hollow structure, with the mounting through hole and the sliding groove 201 connected.

[0042] In an alternative embodiment, the first bottom adjusting member 2 remains stationary, and the first driving assembly may include a cylinder, the cylinder's push rod being connected to the second bottom adjusting member 3. When the cylinder operates, the cylinder's push rod extends or retracts, thus moving the second bottom adjusting member 3, thereby changing the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2. Since two positioning side plates 4 are respectively disposed on the first bottom adjusting member 2 and the second bottom adjusting member 3, when the distance between the first bottom adjusting member 2 and the second bottom adjusting member 3 changes, the distance between the two positioning side plates 4 will be adjusted synchronously. Each positioning side plate 4 is connected to two side adjusting brackets 5, and each side adjusting bracket 5 is connected to a conveyor belt assembly, thus causing the spacing between the conveyor belt assemblies on both sides to be adjusted synchronously, thereby accommodating the testing of circuit boards of different widths.

[0043] For example, when the cylinder is located on the right side of the second bottom adjusting member 3, the retraction of the cylinder's push rod will cause the second bottom adjusting member 3 to move away from the first bottom adjusting member 2, increasing the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2. Since the two positioning side plates 4 are respectively located on the first bottom adjusting member 2 and the second bottom adjusting member 3, the increase in the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2 will cause the distance between the two positioning side plates 4 to increase synchronously. Each positioning side plate 4 is connected to two side adjusting brackets 5, and each side adjusting bracket 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will increase synchronously, thus making it suitable for testing circuit boards with a wider width. When the cylinder push rod extends, it causes the second bottom adjusting member 3 to move closer to the first bottom adjusting member 2, reducing the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2. Since the two positioning side plates 4 are respectively set on the first bottom adjusting member 2 and the second bottom adjusting member 3, when the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2 decreases, the distance between the two positioning side plates 4 will decrease synchronously. Each positioning side plate 4 is connected to two side adjusting brackets 5, and each side adjusting bracket 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will decrease synchronously, making it suitable for testing circuit boards with smaller widths.

[0044] For example, when the cylinder is located on the left side of the second bottom adjusting member 3, the extension of the cylinder will cause the second bottom adjusting member 3 to move away from the first bottom adjusting member 2, increasing the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2. Since the two positioning side plates 4 are respectively set on the first bottom adjusting member 2 and the second bottom adjusting member 3, the increase in the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2 will cause the distance between the two positioning side plates 4 to increase synchronously. Each positioning side plate 4 is connected to two side adjusting brackets 5, and each side adjusting bracket 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will increase synchronously, thus making it suitable for testing circuit boards with a wider width. The retraction of the cylinder will cause the second bottom adjusting member 3 to move closer to the first bottom adjusting member 2, reducing the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2. Since the two positioning side plates 4 are respectively set on the first bottom adjusting member 2 and the second bottom adjusting member 3, when the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2 decreases, the distance between the two positioning side plates 4 will decrease synchronously. Each positioning side plate 4 is connected to two side adjusting brackets 5, and each side adjusting bracket 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will decrease synchronously, thus making it suitable for testing circuit boards with smaller widths.

[0045] In another alternative embodiment, the first bottom adjusting member 2 remains stationary, the first drive assembly includes a gear and rack structure, and a rack is provided on one side of the second bottom adjusting member 3. The drive motor is connected to the gear and fixed on the fixed frame 1. The gear meshes with the rack, and the drive motor drives the gear to rotate, which in turn drives the rack to move, thereby changing the distance between the second bottom adjusting member 3 and the first bottom adjusting member 2. Since the two positioning side plates 4 are respectively set on the first bottom adjusting member 2 and the second bottom adjusting member 3, when the distance between the first bottom adjusting member 2 and the second bottom adjusting member 3 changes, the distance between the two positioning side plates 4 will be adjusted synchronously. Each positioning side plate 4 is connected to two side adjusting frames 5, and each side adjusting frame 5 is connected to a conveyor belt assembly. Therefore, the spacing between the conveyor belt assemblies on both sides will be adjusted synchronously, thus making it suitable for testing circuit boards of different widths.

[0046] Specifically, for example, when the drive motor rotates forward, it drives the gear to rotate forward, which in turn drives the rack to move to the right, causing the second bottom adjustment member 3 to move away from the first bottom adjustment member 2. The distance between the second bottom adjustment member 3 and the first bottom adjustment member 2 increases. Since the two positioning side plates 4 are respectively set on the first bottom adjustment member 2 and the second bottom adjustment member 3, when the distance between the second bottom adjustment member 3 and the first bottom adjustment member 2 increases, the distance between the two positioning side plates 4 will increase synchronously. Each positioning side plate 4 is connected to two side adjustment brackets 5, and each side adjustment bracket 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will increase synchronously, thus making it suitable for testing circuit boards with a wider width. When the drive motor reverses, it moves the rack to the left, causing the second bottom adjustment member 3 to move closer to the first bottom adjustment member 2. The distance between the second bottom adjustment member 3 and the first bottom adjustment member 2 decreases. Since the two positioning side plates 4 are respectively set on the first bottom adjustment member 2 and the second bottom adjustment member 3, when the distance between the second bottom adjustment member 3 and the first bottom adjustment member 2 decreases, the distance between the two positioning side plates 4 will decrease synchronously. Each positioning side plate 4 is connected to two side adjustment brackets 5, and each side adjustment bracket 5 is connected to a conveyor belt assembly. Therefore, the distance between the conveyor belt assemblies on both sides will decrease synchronously, thus making it suitable for testing circuit boards with smaller widths.

[0047] In yet another alternative embodiment, the first drive component may simultaneously drive the first bottom adjustment member 2 and the second bottom adjustment member 3 to move, or the first drive component may drive the first bottom adjustment member 2 to move while the second bottom adjustment member 3 remains stationary.

[0048] In one embodiment, the side adjustment frame 5 includes a horizontal frame 501 and a plurality of vertical frames 502 disposed on the horizontal frame 501. The two side adjustment frames 5 are staggered so that the vertical frames 502 on one horizontal frame 501 are slidably disposed between two adjacent vertical frames 502 on the other horizontal frame 501.

[0049] In this embodiment, the side adjustment frame 5 includes a horizontal frame 501 and a plurality of vertical frames 502 disposed on the horizontal frame 501. The vertical frames 502 on the two horizontal frames 501 are staggered in the horizontal direction, so that the vertical frame 502 on one horizontal frame 501 is slidably disposed between two adjacent vertical frames 502 on the other horizontal frame 501. Therefore, the two side adjustment frames 5 guide and limit each other, ensuring that the two side adjustment frames 5 can slide smoothly.

[0050] Specifically, a guide groove is formed between two adjacent vertical frames 502 on one horizontal frame 501, and the vertical frame 502 on the other horizontal frame 501 is located in the guide groove.

[0051] Specifically, a horizontal frame 501 is located above, with a vertical frame 502 extending vertically downwards on it, and another horizontal frame 501 is located below, with a vertical frame 502 extending vertically upwards on it.

[0052] It should be noted that the number of vertical frames 502 on the two horizontal frames 501 can be the same or different.

[0053] In one embodiment, the second adjustment assembly includes a bidirectional screw 11 and a second drive motor 10. The bidirectional screw 11 is arranged vertically and is threadedly connected to two side adjustment brackets 5 respectively; the second drive motor 10 is fixed to the positioning side plate 4 and connected to the bidirectional screw 11.

[0054] In this embodiment, the second drive motor 10 drives the bidirectional screw 11 to rotate. Since the bidirectional screw 11 is connected to the two side adjustment frames 5 by threads, it will simultaneously drive the two side adjustment frames 5 to move in the vertical direction, thereby changing the distance between the two side adjustment frames 5 in the vertical direction. Since each side adjustment frame 5 is connected to a conveyor belt assembly, when the second drive assembly adjusts the distance between the two side adjustment frames 5 in the vertical direction, the distance between the two conveyor belt assemblies on the same side will be adjusted synchronously, thereby adapting to the conveying and clamping positioning of circuit boards of different thicknesses.

[0055] It should be noted that the bidirectional screw 11 has two sections of thread with different directions of rotation, which allows the two side adjustment brackets 5 connected to the bidirectional screw 11 to move away from or closer to each other.

[0056] Specifically, the second drive motor 10 can rotate forward or reverse. When the second drive motor 10 rotates forward, it drives the bidirectional screw 11 to rotate forward, reducing the vertical distance between the two side adjustment frames 5. Since each side adjustment frame 5 is connected to a conveyor belt assembly, when the vertical distance between the two side adjustment frames 5 decreases, the distance between the two conveyor belt assemblies on the same side also decreases, thus enabling the conveying and clamping of thinner circuit boards. When the second drive motor 10 rotates in reverse, it drives the bidirectional screw 11 to rotate in reverse, increasing the vertical distance between the two side adjustment frames 5. Since each side adjustment frame 5 is connected to a conveyor belt assembly, when the vertical distance between the two side adjustment frames 5 increases, the distance between the two conveyor belt assemblies on the same side also increases, thus enabling the conveying and clamping of thicker circuit boards.

[0057] Specifically, the top of the positioning side plate 4 is provided with a horizontal first mounting part 401, and the second drive motor 10 is fixed to the first mounting part 401. The bottom of the positioning side plate 4 is provided with a horizontal second mounting part 402, and the lower end of the bidirectional screw 11 is rotatably provided in the second mounting part 402.

[0058] Specifically, such as Figure 5 As shown, the side adjustment frame 5 includes a horizontal frame 501 and a vertical frame 502, and the bidirectional screw 11 is threadedly connected to the horizontal frame 501.

[0059] In an alternative embodiment, the second drive assembly may include a gripper cylinder, one gripper of which is connected to the upper side adjustment frame 5, and the other gripper of which is connected to the lower side adjustment frame 5. The two grippers are parallel to each other and can open and close in parallel. The gripper cylinder drives the two side adjustment frames 5 to move closer or further apart, thereby changing the vertical distance between the two side adjustment frames 5. Since each side adjustment frame 5 is connected to a conveyor belt assembly, when the second drive assembly adjusts the vertical distance between the two side adjustment frames 5, the distance between the two conveyor belt assemblies on the same side is adjusted synchronously, thereby adapting to the conveying and clamping positioning of circuit boards of different thicknesses.

[0060] In another alternative embodiment, one of the side adjustment frames 5 can be kept stationary, and the second drive assembly is connected to the other side adjustment frame 5. The vertical distance between the two side adjustment frames 5 is adjusted by driving the other side adjustment frame 5 to move. For example, the lower side adjustment frame 5 can be kept stationary, and the second drive assembly can be connected to the upper side adjustment frame 5. When the second drive assembly drives the upper side adjustment frame 5 downward, the vertical distance between the two side adjustment frames 5 decreases. Since each side adjustment frame 5 is connected to a conveyor belt assembly, the decrease in the vertical distance between the two side adjustment frames 5 reduces the distance between the two conveyor belt assemblies on the same side, thereby enabling the conveying and clamping of thinner circuit boards. When the second drive assembly drives the upper side adjustment frame 5 upward, the vertical distance between the two side adjustment frames 5 increases. Since each side adjustment frame 5 is connected to a conveyor belt assembly, the increase in the vertical distance between the two side adjustment frames 5 increases the distance between the two conveyor belt assemblies on the same side, thereby enabling the conveying and clamping of thicker circuit boards.

[0061] Furthermore, the lower side adjustment frame 5 remains stationary, and the second drive assembly is connected to the upper side adjustment frame 5. Specifically, the second drive assembly can be a cylinder, with its push rod connected to the upper side adjustment frame 5. When the cylinder push rod extends, driving the upper side adjustment frame 5 downwards, the vertical distance between the two side adjustment frames 5 decreases. Since each side adjustment frame 5 is connected to a conveyor belt assembly, the decrease in the vertical distance between the two side adjustment frames 5 reduces the distance between the two conveyor belt assemblies on the same side, thus enabling the conveying and clamping of thinner circuit boards. When the cylinder push rod retracts, driving the upper side adjustment frame 5 upwards, the vertical distance between the two side adjustment frames 5 increases. Since each side adjustment frame 5 is connected to a conveyor belt assembly, the increase in the vertical distance between the two side adjustment frames 5 increases the distance between the two conveyor belt assemblies on the same side, thus enabling the conveying and clamping of thicker circuit boards.

[0062] Alternatively, the lower side adjustment frame 5 remains stationary, and the second drive assembly is connected to the upper side adjustment frame 5. Specifically, the second drive assembly can be a gear and rack mechanism. The drive motor is fixed to the positioning side plate 4, connected to the gear, which meshes with the rack, which is located on the upper side adjustment frame 5. When the drive motor rotates forward, it drives the gear to rotate, which in turn drives the rack to move downwards. This causes the upper side adjustment frame 5 to move downwards, reducing the vertical distance between the two side adjustment frames 5. Since each side adjustment frame 5 is connected to a conveyor belt assembly, the reduction in the vertical distance between the two side adjustment frames 5 will reduce the distance between the two conveyor belt assemblies on the same side, thus enabling the conveying and clamping of thinner circuit boards. When the drive motor reverses, it drives the gear to rotate, which in turn drives the rack to move upward. When the upper side adjustment frame 5 moves upward, the vertical distance between the two side adjustment frames 5 increases. Since each side adjustment frame 5 is connected to a conveyor belt assembly, when the vertical distance between the two side adjustment frames 5 increases, the distance between the two conveyor belt assemblies on the same side will increase, thereby enabling the conveying and clamping of thicker circuit boards.

[0063] In one embodiment, the conveyor belt assembly includes a connecting sleeve 12, a first baffle 15, a third drive motor 18, a rotating rod 19, and a conveyor belt 21.

[0064] Each side adjustment frame 5 is connected to multiple connecting sleeves 12. Both ends of the connecting sleeve 12 are connected to rotating frames 13. The rotating frames 13 are rotatably equipped with auxiliary pulleys 14. A first baffle 15 is connected to multiple connecting sleeves 12. The first baffle 15 is located on the side of the connecting sleeve 12 away from the side adjustment frame 5. The first baffle 15 is rotatably connected to the auxiliary pulley 14 and the drive pulley 16. The drive pulley 16 and the auxiliary pulley 14 are connected by a belt body 17. A positioning side plate 4 is fixedly connected to a mounting plate 403. A third drive motor 18 is fixed to the mounting plate 403 and connected to the drive pulley 16. A rotating rod 19 is connected to the drive pulley 16. A rotating roller 20 is provided outside the rotating rod 19. A conveyor belt 21 is wound around the rotating roller 20. The conveyor belt 21 is suitable for conveying circuit boards.

[0065] In this embodiment, each side adjustment frame 5 is connected to multiple connecting sleeves 12, and the multiple connecting sleeves 12 are connected to the first baffle 15. Therefore, the first baffle 15, the connecting sleeves 12, and the side adjustment frame 5 are connected as a whole. The two ends of the first baffle 15 are connected to rotating frames 13. The rotating frames 13 are rotatably provided with auxiliary pulleys 14. The first baffle 15 is rotatably connected to the auxiliary pulleys 14 and the drive pulleys 16. The drive pulleys 16 and the auxiliary pulleys 14 are connected by a belt body 17. The third drive motor 18 is connected to the drive pulleys 16. When the third drive motor 18 drives the drive pulleys 16 to rotate, it drives each auxiliary pulley 14 to rotate together through the belt body 17. Since the rotating rod 19 is connected to the drive pulleys 16, and a rotating roller 20 is provided outside the rotating rod 19, and the conveyor belt 21 is wound around the rotating roller 20, when the third drive motor 18 drives the drive pulleys 16 to rotate, it will synchronously drive the rotating rod 19, the rotating roller 20, and the conveyor belt 21 to move. The structure is compact.

[0066] In one specific embodiment, each positioning side plate 4 is provided with two mounting plates 403. The two mounting plates 403 on each positioning side plate 4 are asymmetrically arranged, with one mounting plate 403 located at the top and the other mounting plate 403 located at the bottom.

[0067] Specifically, mounting plate 403 is L-shaped.

[0068] In one specific embodiment, the side adjustment frame 5 includes a horizontal frame 501 and a plurality of vertical frames 502 disposed on the horizontal frame 501, and the connecting sleeve 12 is specifically connected to the horizontal frame 501.

[0069] In one specific embodiment, the horizontal frame 501 is provided with multiple vertically penetrating grooves, and the connecting sleeve 12 is engaged in the grooves to facilitate the positioning and connection between the horizontal frame 501 and the connecting sleeve 12.

[0070] Specifically in one embodiment, such as Figure 7 As shown, the connecting sleeve 12 is T-shaped and includes a body part 1201 and a protrusion part 1202. The body part 1201 is fitted into the groove and extends in the vertical direction. The protrusion part 1202 protrudes from the body part 1201 in the horizontal direction. The first baffle 15 is specifically connected to the protrusion part 1202. By setting the protrusion part 1202, a certain gap can be left between the first baffle 15 and the side adjustment frame 5 in the horizontal direction, thereby ensuring that the auxiliary pulley 14 on the rotating frame 13 can rotate smoothly.

[0071] In one embodiment, the rotating frame 13 and the connecting sleeve 12 are slidably engaged, and an elastic element 23 is provided between the rotating frame 13 and the connecting sleeve 12.

[0072] In this embodiment, the rotating frame 13 and the connecting sleeve 12 are slidably engaged, and an elastic element 23 is provided between the rotating frame 13 and the connecting sleeve 12. Therefore, the rotating frame 13 can move to a certain extent in the vertical direction relative to the connecting sleeve 12. During the transmission of the circuit board, it can play a certain role in self-adaptive protection of the circuit board, ensuring the stability of the conveyor belt 21 during the transmission process, and can adapt to the tension of the belt body 17.

[0073] In one specific embodiment, the elastic element 23 is a strong spring, one end of which is fixed to the end of the connecting sleeve 12, and the other end is connected to the rotating frame 13.

[0074] Specifically in one embodiment, such as Figure 7 As shown, the rotating frame 13 is provided with a mounting groove 1301. The end of the connecting sleeve 12 is slidably disposed in the mounting groove 1301. One end of the elastic member 23 is fixed to the end of the connecting sleeve 12, and the other end abuts against the bottom of the mounting groove 1301.

[0075] In one embodiment, the conveyor belt assembly further includes a second baffle 22, with one end of each rotating rod 19 away from the drive pulley 16 rotatably disposed on the second baffle 22, and each rotating rod 19 is rotatably connected to two symmetrically distributed adaptive sliders 24, the two adaptive sliders 24 slidingly engaging with the first baffle 15 and the second baffle 22 respectively.

[0076] In this embodiment, during the process of conveying circuit boards, the adaptive slider 24 can rotate relative to the rotating rod 19 and slide relative to the first baffle 15 and the second baffle 22. When the conveyor belt 21 experiences positional shift due to the transmission of circuit boards of different thicknesses, the action of the elastic element 23, or vibration, the adaptive slider 24 compensates for the position and angle changes of the rotating rod 19 by rotating and sliding, avoiding damage to the rotating rod 19 due to excessive force, ensuring the tension and transmission efficiency of the conveyor belt 21, absorbing impact to maintain transmission stability, and thus adapting to different working conditions.

[0077] In one embodiment, the circuit board testing device further includes a turntable 25 and a fourth drive motor 26 for driving the turntable 25 to rotate, with the first bottom adjusting member 2 and the second bottom adjusting member 3 slidingly engaged with the turntable 25.

[0078] In this embodiment, the circuit board testing device also includes a turntable 25 and a fourth drive motor 26 that drives the turntable 25 to rotate. The first bottom adjustment member 2 and the second bottom adjustment member 3 are slidably engaged with the turntable 25. When the fourth drive motor 26 drives the turntable 25 to rotate, it will synchronously drive the first bottom adjustment member 2 and the second bottom adjustment member 3 to rotate. The position of the first bottom adjustment member 2 and the second bottom adjustment member 3 can be adjusted, providing more flexible space and angle conditions for width adjustment. This ensures that the circuit board of different widths can be adapted at different angles, thereby cooperating with the width adjustment work of the first bottom adjustment member 2 and the second bottom adjustment member 3.

[0079] In one specific embodiment, the fixing frame 1 is a gantry frame, including a bottom fixing plate 101, a support leg 102 located at the corner of the bottom fixing plate 101, a turntable 25 rotatably mounted on the bottom fixing plate 101, and a drive motor fixed to the lower side of the bottom fixing plate 101.

[0080] In one embodiment, the turntable 25 is provided with a slide groove 2501, and the bottom of the first bottom adjusting member 2 and the second bottom adjusting member 3 are respectively provided with moving blocks 27. The moving blocks 27 provided on the first bottom adjusting member 2 and the moving blocks 27 provided on the second bottom adjusting member 3 are symmetrically distributed, and the moving blocks 27 slide in cooperation with the slide groove 2501.

[0081] In this embodiment, by providing a slide groove 2501 on the turntable 25, and providing a moving block 27 at the bottom of the first bottom adjusting member 2 and the second bottom adjusting member 3 respectively, the moving block 27 on the first bottom adjusting member 2 and the moving block 27 on the second bottom adjusting member 3 are symmetrically distributed, and the moving block 27 slides in cooperation with the slide groove 2501, which can guide and limit the movement of the second bottom adjusting member 3.

[0082] In one specific embodiment, only one slide groove 2501 can be provided, and a moving block 27 is provided at the bottom of the second bottom adjusting member 3. The moving block 27 slides and engages with the slide groove 2501, and the first bottom adjusting member 2 can be fixed to the turntable 25. Alternatively, only one slide groove 2501 can be provided, and a moving block 27 is provided at the bottom of the first bottom adjusting member 2. The moving block 27 slides and engages with the slide groove 2501, and the second bottom adjusting member 2 is fixed to the turntable 25.

[0083] In one embodiment, the fixed frame 1 is a gantry frame, including a transverse boom 103, and the telescopic structure 6 includes an electrically operated telescopic rod disposed on the transverse boom 103.

[0084] In this embodiment, the transverse boom 103 is equipped with an electric telescopic rod, which is connected to a detection device 7. The detection device 7 can be adjusted in height under the drive of the electric telescopic rod, thus making it suitable for detecting circuit boards at different heights.

[0085] Specifically, the detection device 7 is an optical detection device 7, which can perform optical detection on the circuit board to detect whether there are defects or abnormalities in the components and lines on the circuit board.

[0086] The circuit board testing device provided in this embodiment operates as follows:

[0087] The fourth drive motor 26 starts, and its output drives the turntable 25 to rotate on the base plate of the gantry. The moving block 27 in the slide groove 2501 on the turntable 25 rotates accordingly. When it is necessary to adjust the distance between the first bottom adjusting member 2 and the second bottom adjusting member 3, the first drive motor 8 starts, and its output drives the one-way screw 9 to rotate in the first bottom adjusting member 2. Since the one-way screw 9 is threadedly connected to the second bottom adjusting member 3, the second bottom adjusting member 3 will move relative to the first bottom adjusting member 2 under the action of the one-way screw 9, thereby realizing the adjustment of the bottom width to accommodate circuit boards of different widths. When it is necessary to adjust the position of the side adjusting bracket 5, the second drive motor 10 starts, and its output drives the bidirectional screw 11 to rotate on the positioning side plate 4. Since the side adjusting bracket 5 is threadedly connected to the bidirectional screw 11 and slides on the positioning side plate 4, when the bidirectional screw 11 rotates, the staggered side adjusting brackets 5 will move relative to the positioning side plate 4. The system is designed to position the side of the circuit board and adapt to different circuit board thicknesses. A third drive motor 18 starts, its output driving a drive pulley 16 to rotate. The drive pulley 16, via a belt body 17, drives an auxiliary pulley 14 to rotate. As the drive pulley 16 rotates, it drives a rotating roller 20 via a rotating rod 19. The conveyor belt 21 on the outer wall of the roller 20 begins to operate, transporting the circuit board. A rotating frame 13 slides on a connecting sleeve 12. A strong spring provides adaptive protection for the circuit board, ensuring the stability of the conveyor belt 21 during transport. An adaptive slider 24 rotates on the rotating rod 19 and slides on either the first baffle 15 or the second baffle 22, adapting to different working conditions. An electric telescopic rod can extend or shorten as needed, its output driving an optical inspection device 7 to move up and down, performing optical inspection on the circuit board on the conveyor belt 21 to detect defects or abnormalities in components and circuitry.

[0088] In addition, the circuit board testing device in this embodiment adopts a modular architecture, with independent modules for width adjustment, side adjustment, conveying, and detection. During installation, each module can be flexibly combined as needed. In case of failure, maintenance personnel can quickly locate and replace the faulty module individually, saving maintenance time and costs. It also facilitates the upgrading of specific modules according to technology and needs, extending the equipment's lifespan and improving cost-effectiveness.

[0089] It should be noted that the circuit board testing device in this embodiment is used to test PCB circuit boards.

[0090] The circuit board testing device provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A circuit board testing device, characterized in that, include: Fixture (1); The first adjustment component includes a first bottom adjustment member (2) and a second bottom adjustment member (3), and the distance between the first bottom adjustment member (2) and the second bottom adjustment member (3) is adjusted by a first drive component; Positioning side plates (4) are provided symmetrically in two and are respectively connected to the top of the first bottom adjusting member (2) and the second bottom adjusting member (3); The second adjustment assembly is provided on each of the positioning side plates (4). The second adjustment assembly includes two side adjustment frames (5) distributed in the vertical direction. The distance between the two side adjustment frames (5) is adjusted by the second drive assembly. Each side adjustment frame (5) is connected to a conveyor belt assembly, which is adapted to convey a circuit board. The detection device (7) is connected to the fixed frame (1) via a telescopic structure (6).

2. The circuit board testing device according to claim 1, characterized in that, The first driving component includes: One-way screw (9), the one-way screw (9) passes through the first bottom adjusting member (2) and is threadedly connected to the second bottom adjusting member (3), the one-way screw (9) and the first bottom adjusting member (2) are rotatably engaged; The first drive motor (8) is fixed to the first bottom adjustment member (2) and connected to the one-way screw (9).

3. The circuit board testing device according to claim 1, characterized in that, The side adjustment frame (5) includes a horizontal frame (501) and a plurality of vertical frames (502) disposed on the horizontal frame (501). The vertical frames (502) on two horizontal frames (501) are staggered in the horizontal direction, so that the vertical frame (502) on one horizontal frame (501) is slidably disposed between two adjacent vertical frames (502) on another horizontal frame (501).

4. The circuit board testing apparatus according to claim 1, characterized in that, The second adjustment component includes: A bidirectional screw (11) is arranged in the vertical direction, and the bidirectional screw (11) is connected to the two side adjustment brackets (5) by threads respectively; The second drive motor (10) is fixed to the positioning side plate (4) and connected to the bidirectional screw (11).

5. The circuit board testing apparatus according to claim 1, characterized in that, The conveyor belt assembly includes: Connecting sleeve (12), each of the side adjustment brackets (5) is connected to multiple connecting sleeves (12), and the two ends of the connecting sleeve (12) are connected to rotating brackets (13), and the rotating brackets (13) are rotatably provided with auxiliary pulleys (14); A first baffle (15) is connected to a plurality of connecting sleeves (12). The first baffle (15) is located on the side of the connecting sleeve (12) away from the side adjustment frame (5). The first baffle (15) is rotatably connected to an auxiliary pulley (14) and a drive pulley (16). The drive pulley (16) and the auxiliary pulley (14) are connected by a belt body (17). The third drive motor (18) is fixedly connected to the mounting plate (403) on the positioning side plate (4), and the third drive motor (18) is fixed to the mounting plate (403) and connected to the drive pulley (16). A rotating rod (19) is connected to the drive pulley (16), and a rotating roller (20) is provided outside the rotating rod (19); A conveyor belt (21) is wound around the outside of the roller (20), and the conveyor belt (21) is adapted to transport circuit boards.

6. The circuit board testing apparatus according to claim 5, characterized in that, The rotating frame (13) is slidably engaged with the connecting sleeve (12), and an elastic element (23) is provided between the rotating frame (13) and the connecting sleeve (12).

7. The circuit board testing apparatus according to claim 5, characterized in that, The conveyor belt assembly also includes a second baffle (22). The end of each of the rotating rods (19) away from the drive pulley (16) is rotatably disposed on the second baffle (22). Each of the rotating rods (19) is rotatably connected to two symmetrically distributed adaptive sliders (24). The two adaptive sliders (24) are respectively in sliding cooperation with the first baffle (15) and the second baffle (22).

8. The circuit board testing apparatus according to any one of claims 1 to 7, characterized in that, The circuit board testing device also includes a turntable (25) and a fourth drive motor (26) for driving the turntable (25) to rotate. The first bottom adjustment member (2) and the second bottom adjustment member (3) are slidably engaged with the turntable (25).

9. The circuit board testing apparatus according to claim 8, characterized in that, The turntable (25) is provided with a slide groove (2501). The bottom of the first bottom adjusting member (2) and the second bottom adjusting member (3) are respectively provided with moving blocks (27). The moving blocks (27) provided on the first bottom adjusting member (2) and the moving blocks (27) provided on the second bottom adjusting member (3) are symmetrically distributed. The moving blocks (27) slide in cooperation with the slide groove (2501).

10. The circuit board testing apparatus according to any one of claims 1 to 7, characterized in that, The fixed frame (1) is a gantry frame, including a horizontal boom (103), and the telescopic structure (6) includes an electric telescopic rod provided on the horizontal boom (103).

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