Multi-station detection device for PCB (Printed Circuit Board)

Abstract

The invention relates to the technical field of PCB detection, and discloses a PCB multi-station detection device which comprises a detection platform and a supporting box, a mounting frame is fixed to the supporting box, and the detection platform is fixed to the top of the mounting frame; the two limiting strips are symmetrically distributed and slidably connected to the detection platform in a penetrating mode, a first connecting plate and a second connecting plate are fixed to the tops and the bottoms of the limiting strips correspondingly, and an adjusting shaft is installed at the top end of the first connecting plate through a bearing seat; clamping units used for adapting to centering clamping of PCBs in different shapes are fixed to the ends, close to each other, of the two rotating adjusting shafts; according to the invention, the structure on the clamping unit is deformed to adapt to the shape and the size of the PCB, so that reliable clamping and positioning of the PCBs with different shapes are realized, high adaptability and flexibility are achieved, and an important role can be played in different detection occasions, so that the circuit board has high stability in the detection process, and the detection efficiency is improved. And loosening caused by a small clamping area is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of PCB circuit board detection, and in particular to a multi-station detection device for a PCB circuit board. Background Art

[0002] PCB, whose Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. Currently, companies need to conduct relevant quality inspections after mass production of PCB boards to avoid the use of defective products. There are existing PCB board inspection devices.

[0003] The existing Chinese patent document CN201811238665.0 discloses a PCB circuit board detection device, including a base, a moving structure, a sliding structure, a limiting structure, a first clamping structure, a rotating structure, a storage structure, a detection structure and a second clamping structure; a sliding structure is provided at the top of the base, and one side of the sliding structure is rotatably connected to the first clamping structure, and the second clamping structure on the same center line as the first clamping structure is fixed to the top of the base, and the distance between the first clamping structure and the second clamping structure can be achieved by sliding the sliding structure left and right on the base, so as to clamp PCB circuit boards of different sizes, and since both the first clamping structure and the second clamping structure can rotate, the detection surface can be replaced at any time during the detection, and there is no need to manually pick up the flange, which saves time and avoids damage to the PCB circuit board caused by hand handling.

[0004] In the above-mentioned detection device, although its design has the function of clamping the PCB circuit board, the PCB circuit board itself is closely connected and matched with various electronic products. Since different electronic products have different requirements for the shape and size of the circuit board, the shape of the PCB circuit board is not always a standard square rectangle. For example, the PCB circuit board installed inside the drone is often designed into a butterfly shape in order to meet the complex circuit connection requirements inside the drone. Similarly, the circuit board in the handle remote control is often non-rectangular; therefore, when clamping such non-standard PCB circuit boards, the clamping area is subject to certain limitations, which means that the clamping structure cannot fully cover the boundary of the circuit board for clamping and fixing, and if an attempt is made to improve this situation by increasing the clamping force, it is easy to cause damage to the circuit board itself; therefore, this clamping structure cannot provide sufficient stability when handling non-rectangular PCB circuit boards, and there is a risk of damaging the circuit board. Summary of the invention

[0005] The purpose of the present invention is to provide a PCB circuit board multi-station detection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-station detection device for a PCB circuit board, comprising a detection platform and a support box, a mounting frame is fixed on the support box, and the detection platform is fixed on the top of the mounting frame; it also includes: two limit bars that are symmetrically distributed and slidably penetrate and are connected to the detection platform, a No. 1 connecting plate and a No. 2 connecting plate are fixed on the top and bottom of the limit bars respectively, a rotation shaft is installed on the top of the No. 1 connecting plate through a bearing seat, and the mutually close ends of the two rotation shafts are fixed with clamping units for centering and clamping PCB circuit boards of different shapes; a centering drive unit installed inside the mounting frame, a power conversion unit is provided on one side of the centering drive unit, and a rotation transmission unit is provided on the top of the power conversion unit; an oil box fixed on the outer wall of the mounting frame, and an oil injection unit is installed on one side of the oil box.

[0007] Preferably, the clamping unit includes a positioning block, a telescopic column and a spring, the adjustment axis is fixedly connected to the middle part of one side of the positioning block, a plurality of guide holes are evenly opened on the side of the positioning block away from the adjustment axis, a telescopic column is slidably connected in each of the guide holes, one end of the telescopic column located inside the guide hole is fixedly connected to the spring, one end of the spring away from the telescopic column is fixedly connected to the bottom of the guide hole, a limit piece is provided on the outside of the positioning block, and the designed clamping unit can adapt to workpieces of different shapes and sizes, and precise positioning can be achieved by using multiple telescopic columns and multiple springs, thereby ensuring the accuracy and stability of measurement.

[0008] Preferably, the centering drive unit includes a fixed shaft, the middle part of the fixed shaft is rotatably connected to a No. 1 limit seat, the bottom of the No. 1 limit seat is fixed to the inner bottom of the mounting frame, both ends of the fixed shaft are fixed with a No. 1 screw rod through a coupling, the No. 1 screw rod is threadedly connected to the No. 2 connecting plate through a nut, one end of one of the No. 1 screw rods is transmission-connected with a linkage, the injection unit is transmission-connected with the output end of the linkage, the outer side of the fixed shaft is fixedly sleeved with a No. 1 gear, and the power conversion unit is arranged on one side of the No. 1 gear. The designed centering drive unit can realize the precise positioning of the clamping unit and can provide sufficient clamping force for the clamping unit.

[0009] Preferably, the power conversion unit includes an inner spline No. 1, the inner sliding sleeve of the inner spline No. 1 is connected to an outer spline No. 1, both ends of the outer spline No. 1 are fixed with a connecting shaft, the outer side of the connecting shaft No. 1 is rotatably connected with a limit seat No. 2, the bottom of the limit seat No. 2 is fixedly connected to the installation frame through a fixing plate, the outer side of the inner spline No. 1 is fixedly sleeved with a gear No. 2 and a gear No. 3, the middle part of the inner spline No. 1 is rotatably connected with a limit seat No. 3, the inner bottom of the installation frame is fixedly connected with a servo motor No. 1, the output end of the servo motor No. 1 is connected through a coupling. The device is fixed with a No. 2 screw rod, both ends of the No. 2 screw rod are rotatably connected with a No. 4 limit seat, the No. 4 limit seat is fixedly connected to the inner bottom of the mounting frame, the outer side of the No. 2 screw rod is connected with a moving block through a nut thread, the top of the moving block is fixed with a No. 3 connecting plate, the No. 3 connecting plate is fixedly connected to the bottom of the No. 2 limit seat, one end of one of the No. 1 connecting shafts is transmission-connected with a driving member, the switching transmission unit is arranged above the No. 1 external spline, and the designed power conversion unit facilitates the rapid switching of power between the centering drive unit and the switching transmission unit.

[0010] Preferably, the rotation transmission unit includes a No. 2 connecting shaft arranged parallel to the No. 1 external spline, a No. 4 gear is fixedly sleeved on the middle part of the No. 2 connecting shaft, a No. 2 external spline is fixedly mounted on both ends of the No. 2 connecting shaft, a No. 2 internal spline is slidably sleeved on the No. 2 external spline, a No. 5 limit seat is rotatably connected to the outer side of the No. 2 internal spline, a support plate is fixedly connected to the bottom of the No. 5 limit seat, one side of the support plate is fixedly connected to the No. 2 connecting plate, a driving pulley is fixedly sleeved on the outer side of the No. 2 internal spline, the driving pulley is connected to a driven pulley through a synchronous belt drive, and the driven pulley is fixedly sleeved on the rotation shaft. The designed rotation transmission unit can drive the rotation shaft to rotate, thereby rotating the clamped PCB circuit board, which is convenient for detecting different surfaces of the PCB circuit board.

[0011] Preferably, the driving member includes a No. 2 servo motor, which is fixedly connected to the inner bottom of the mounting frame, a worm is fixedly connected to the output end of the No. 2 servo motor, the worm is meshingly connected to a worm wheel, a No. 3 connecting shaft is fixed in the center hole of the worm wheel, and the No. 3 connecting shaft is fixedly connected to the No. 1 connecting shaft through a coupling. The designed driving member can provide power for the centering drive unit and the rotation transmission unit.

[0012] Preferably, the oil injection unit includes a cylinder, the cylinder is fixed to the outer wall of the installation frame, a piston block is slidably connected to the inside of the cylinder, an oil inlet pipe is fixedly connected to the lower left side of the cylinder through a one-way valve, an end of the oil inlet pipe away from the cylinder is connected to the bottom of the oil box through a valve seat, an oil outlet pipe is fixedly connected to the upper left side of the cylinder through a one-way valve, an end of the oil outlet pipe away from the cylinder extends into the interior of the installation frame and is fixedly connected to an oil delivery pipe, a plurality of oil spray heads are fixed to one side of the bottom of the oil delivery pipe, and the plurality of oil spray heads are directly facing the power Conversion unit, the lower right side of the cylinder is fixedly connected with an air inlet pipe through a one-way valve, the upper right side of the cylinder is fixedly connected with an air outlet pipe through a one-way valve, the end of the oil outlet pipe away from the cylinder extends into the interior of the installation frame and is fixedly connected with an air supply pipe, a plurality of nozzles are fixed to one side of the bottom of the air supply pipe, the plurality of nozzles are facing the power conversion unit, a reciprocating rod is fixed to the right side of the piston block, the output end of the linkage is transmission-connected to the reciprocating rod, and the designed oil injection unit can perform oil injection and lubrication treatment for the centering drive unit and the power conversion unit.

[0013] Preferably, the linkage part includes an active bevel gear fixedly connected to one end of the No. 1 screw rod, the active bevel gear is meshingly connected to the passive bevel gear, a transmission shaft is fixed in the center hole of the passive bevel gear, the outer side of the transmission shaft is rotatably connected to the No. 6 limit seat, the No. 6 limit seat is fixedly connected to the inner bottom of the installation frame, a crank is fixed to the end of the transmission shaft located outside the installation frame, the end of the crank away from the transmission shaft is slidably connected to a transmission plate through a limit pin, and the end of the reciprocating rod away from the piston block is fixedly connected to the middle of one side of the transmission plate. The designed linkage part can realize the linkage between the centering drive unit and the injection unit.

[0014] Preferably, the limiting member includes an arc-shaped plate fixed on one side of the No. 1 connecting plate, a limiting groove is provided on the arc-shaped plate, L-shaped blocks are fixed at both ends of the positioning block, a sliding column is fixed at one end of the L-shaped block, and the sliding column is slidably connected to the arc-shaped plate through the limiting groove. The designed limiting member makes it more stable when the adjusting shaft drives the positioning block to rotate.

[0015] Preferably, a tooth block is fixed on the top of the No. 3 limiting seat, and the tooth block is meshed and connected with the No. 4 gear. The designed tooth block can have a clamping effect on the No. 4 gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adapts to the shape and size of the PCB circuit board by deforming the structure on the clamping unit, thereby realizing reliable clamping and positioning of PCB circuit boards of different shapes. It has high adaptability and flexibility, and can play an important role in different detection occasions. During the detection process, the circuit board has high stability and will not loosen due to a small clamping area.

[0017] 2. In the present invention, the power conversion unit can realize the rapid conversion of output power between the centering drive unit and the switching transmission unit in different usage scenarios, ensuring that the PCB circuit board can be rotated while being clamped, and only the same set of driving parts is needed to provide power source for different operations, which not only reduces the use and maintenance costs of the device, but also significantly reduces energy consumption, making the entire system more efficient and economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal and external structure of the installation frame in the present invention; Figure 3 It is a structural schematic diagram of the clamping unit of the present invention; Figure 4 It is a structural schematic diagram of the centering drive unit of the present invention; Figure 5 It is a structural schematic diagram of the power conversion unit of the present invention; Figure 6 It is a structural schematic diagram of the transfer transmission unit of the present invention; Figure 7 It is a schematic diagram of the state when the second gear and the third gear of the present invention are respectively meshed with the first gear and the fourth gear; Figure 8 It is a schematic diagram of the overall structure of the fuel injection unit of the present invention; Fig. 9 It is a schematic diagram of the local structure of the fuel injection unit of the present invention; Fig.10 It is a structural schematic diagram of the position limiting member of the present invention; Fig.11 It is a schematic diagram of the state when the gear block and the fourth gear are meshing with each other.

[0019] In the figure: 1. detection platform; 2. support box; 3. installation frame; 4. limit strip; 5. No. 1 connecting plate; 6. No. 2 connecting plate; 7. rotation shaft; 8. clamping unit; 9. centering drive unit; 10. power conversion unit; 11. rotation transmission unit; 12. oil box; 13. oil injection unit; 14. positioning block; 15. telescopic column; 16. spring; 17. guide hole; 18. limit piece; 19. fixed shaft; 20. No. 1 limit seat; 21. No. 1 screw rod; 22. linkage member; 23. No. 1 gear; 24. No. 1 internal spline; 25. No. 1 external spline; 26. No. 1 connecting shaft; 27. No. 2 limit seat; 28. No. 2 gear; 29. ​​No. 3 gear; 30. No. 3 limit seat; 31. No. 1 servo motor; 32. No. 2 screw rod; 33. No. 4 limit seat; 34. moving block; 3 5. No. 3 connecting plate; 36. Driving member; 37. No. 2 connecting shaft; 38. No. 2 external spline; 39. No. 2 internal spline; 40. No. 5 limit seat; 41. Support plate; 42. Active pulley; 43. Driven pulley; 44. No. 2 servo motor; 45. Worm; 46. Worm wheel; 47. No. 3 connecting shaft; 48. Cylinder; 49. Piston block; 50. Oil inlet pipe; 51. Oil outlet pipe; 52 , oil pipeline; 53, fuel injection head; 54, air inlet pipe; 55, air outlet pipe; 56, air pipeline; 57, injection head; 58, reciprocating rod; 59, active bevel gear; 60, passive bevel gear; 61, transmission shaft; 62, No. 6 limit seat; 63, crank; 64, transmission plate; 65, arc plate; 66, limit groove; 67, L-shaped block; 68, sliding column; 69, gear block; 70, No. 4 gear. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 3, a multi-station detection device for a PCB circuit board shown in the figure comprises a detection platform 1 and a support box 2, a mounting frame 3 is fixed on the support box 2, and the detection platform 1 is fixed on the top of the mounting frame 3; it also comprises: two limit bars 4 which are symmetrically distributed and slidably penetrate and are connected to the detection platform 1, a No. 1 connecting plate 5 and a No. 2 connecting plate 6 are fixed to the top and bottom of the limit bars 4 respectively, a rotation shaft 7 is installed at the top of the No. 1 connecting plate 5 through a bearing seat, and the mutually close ends of the two rotation shafts 7 are fixed with clamping units 8 for centering and clamping PCB circuit boards of different shapes; a centering drive unit 9 installed inside the mounting frame 3, a power conversion unit 10 is provided on one side of the centering drive unit 9, and a rotation transmission unit 11 is provided on the top of the power conversion unit 10; an oil box 12 fixed on the outer wall of the mounting frame 3, and an oil injection unit 13 is installed on one side of the oil box 12.

[0022] In this solution, the designed centering drive unit 9 drives the two second connecting plates 6 to move closer to each other, and drives the two groups of clamping units 8 to move closer to each other under the limiting action of the limiting strip 4, and deforms the structure on the clamping unit 8 to adapt to the shape and size of the PCB circuit board, thereby realizing reliable clamping and positioning of PCB circuit boards of different shapes. It has high adaptability and flexibility, and can play an important role in different detection occasions, so that the circuit board has high stability during the detection process and will not loosen due to the small clamping area. At the same time, the power conversion unit 10 is used to switch the output power to the turning transmission unit 11, and the turning shaft 7 is driven to rotate by the turning transmission unit 11, so as to rotate the clamped PCB circuit board, which is convenient for detecting different surfaces of the PCB circuit board; in addition, the turning transmission unit 11 will start the oil injection unit 13 to work at the same time when it is running, and the oil injection unit 13 will evenly export the lubricating oil in the oil box 12, so that the centering drive unit 9 and the power conversion unit 10 can be lubricated and lubricated to ensure that both can work efficiently.

[0023] For further information, see Figure 3 The clamping unit 8 includes a positioning block 14, a telescopic column 15 and a spring 16. The adjustment shaft 7 is fixedly connected to the middle part of one side of the positioning block 14. A plurality of guide holes 17 are evenly opened on the side of the positioning block 14 away from the adjustment shaft 7. A telescopic column 15 is slidably connected in each of the guide holes 17. One end of the telescopic column 15 located inside the guide hole 17 is fixedly connected to the spring 16. One end of the spring 16 away from the telescopic column 15 is fixedly connected to the bottom of the guide hole 17. A limiter 18 is provided on the outside of the positioning block 14.

[0024] The principle of clamping the PCB circuit board by the clamping unit 8 is as follows: when the two positioning blocks 14 are close to each other to clamp the circuit board, the telescopic column 15 will generate a reaction force through the spring 16 after being subjected to the pressure of the PCB circuit board. This reaction force will cause a close contact between the telescopic column 15 and the circuit board. Since this contact is achieved through elastic deformation, the telescopic column 15 can adapt to slight unevenness and shape changes on the surface of the workpiece, and multiple telescopic columns 15 have multiple contact points, which can be distributed at different positions of the circuit board, thereby achieving all-round clamping. This multi-point contact method not only improves the stability of clamping, but also can adapt to the shape and size of the PCB circuit board.

[0025] For further information, see Figure 2 and Figure 4 The centering drive unit 9 includes a fixed shaft 19, the middle part of the fixed shaft 19 is rotatably connected to a No. 1 limit seat 20, the bottom of the No. 1 limit seat 20 is fixed to the inner bottom of the mounting frame 3, both ends of the fixed shaft 19 are fixed with a No. 1 screw rod 21 through a coupling, the No. 1 screw rod 21 is threadedly connected to the No. 2 connecting plate 6 through a nut, one end of one of the No. 1 screw rods 21 is transmission-connected with a linkage member 22, the injection unit 13 is transmission-connected with the output end of the linkage member 22, the outer side of the fixed shaft 19 is fixedly sleeved with a No. 1 gear 23, and the power conversion unit 10 is arranged on one side of the No. 1 gear 23.

[0026] Among them, see Figure 5 The power conversion unit 10 includes a No. 1 internal spline 24, the internal sliding sleeve of the No. 1 internal spline 24 is connected to a No. 1 external spline 25, both ends of the No. 1 external spline 25 are fixed with a No. 1 connecting shaft 26, the outer side of the No. 1 connecting shaft 26 is rotatably connected with a No. 2 limit seat 27, the bottom of the No. 2 limit seat 27 is fixedly connected to the installation frame 3 through a fixing plate, the outer side of the No. 1 internal spline 24 is fixedly sleeved with a No. 2 gear 28 and a No. 3 gear 29, the middle part of the No. 1 internal spline 24 is rotatably connected with a No. 3 limit seat 30, and the inner bottom of the installation frame 3 is fixedly connected with a No. 1 servo motor 31, The output end of the No. 1 servo motor 31 is fixed with a No. 2 screw rod 32 through a coupling, and both ends of the No. 2 screw rod 32 are rotatably connected with a No. 4 limit seat 33, and the No. 4 limit seat 33 is fixedly connected to the inner bottom of the mounting frame 3, and the outer side of the No. 2 screw rod 32 is connected with a moving block 34 through a nut thread, and a No. 3 connecting plate 35 is fixed on the top of the moving block 34, and the No. 3 connecting plate 35 is fixedly connected to the bottom of the No. 2 limit seat 27, and one end of one of the No. 1 connecting shafts 26 is transmission-connected with a driving member 36, and the rotation transmission unit 11 is arranged above the No. 1 external spline 25.

[0027] Also, see Figure 5The driving member 36 includes a No. 2 servo motor 44, which is fixedly connected to the inner bottom of the mounting frame 3. A worm 45 is fixedly connected to the output end of the No. 2 servo motor 44, and a worm gear 46 is meshingly connected to the worm gear 45. A No. 3 connecting shaft 47 is fixed in the middle hole of the worm gear 46, and the No. 3 connecting shaft 47 is fixedly connected to the No. 1 connecting shaft 26 through a coupling.

[0028] Specifically, see Figure 5 and Figure 7 By starting the No. 1 servo motor 31 to rotate, the No. 1 servo motor 31 drives the No. 2 screw rod 32 to rotate, the No. 2 screw rod 32 drives the moving block 34 and the No. 3 connecting plate 35 to move, so that the No. 3 connecting plate 35 drives the No. 3 limit seat 30 to move, and then drives the No. 1 internal spline 24 to slide outside the No. 1 external spline 25, drives the No. 2 gear 28 to move, so that the No. 2 gear 28 and the No. 1 gear 23 enter into meshing, and the No. 3 gear 29 does not mesh with any gear. At this time, the transfer unit 11 does not work, and when the clamping action is performed, the No. 2 servo motor 31 drives the No. 2 screw rod 32 to drive the No. 3 connecting plate 35 to move. The servo motor 44 drives the worm 45 to rotate, the worm 45 drives the worm wheel 46 to rotate, the worm wheel 46 drives the third connecting shaft 47 to rotate, the third connecting shaft 47 drives the first connecting shaft 26 to rotate, the first connecting shaft 26 drives the first external spline 25 to rotate, thereby driving the first internal spline 24 to rotate, and then drives the second gear 28 to rotate, the second gear 28 drives the first gear 23 to rotate, the first gear 23 drives the fixed shaft 19 to rotate, the fixed shaft 19 drives the two first screw rods 21 to rotate, and then drives the two second connecting plates 6 to move closer to each other.

[0029] Example 2: Please refer to Figure 6 , this embodiment further explains Example 1, the rotation transmission unit 11 shown in the figure includes a No. 2 connecting shaft 37 arranged parallel to the No. 1 external spline 25, a No. 4 gear 70 is fixedly sleeved on the middle part of the No. 2 connecting shaft 37, a No. 2 external spline 38 is fixedly sleeved on both ends of the No. 2 connecting shaft 37, a No. 2 internal spline 39 is slidably sleeved on the No. 2 external spline 38, a No. 5 limit seat 40 is rotatably connected to the outer side of the No. 2 internal spline 39, a support plate 41 is fixedly connected to the bottom of the No. 5 limit seat 40, one side of the support plate 41 is fixedly connected to the No. 2 connecting plate 6, a driving pulley 42 is fixedly sleeved on the outer side of the No. 2 internal spline 39, the driving pulley 42 is connected to the driven pulley 43 through a synchronous belt drive, and the driven pulley 43 is fixedly sleeved with the rotation shaft 7.

[0030] Specifically, see Figure 5-Figure 7, by starting the No. 1 servo motor 31 to rotate, the No. 1 servo motor 31 drives the No. 2 screw rod 32 to rotate, the No. 2 screw rod 32 drives the moving block 34 and the No. 3 connecting plate 35 to move, so that the No. 3 connecting plate 35 drives the No. 3 limit seat 30 to move, and then drives the No. 1 internal spline 24 to slide outside the No. 1 external spline 25, drives the No. 3 gear 29 to move, so that the No. 3 gear 29 and the No. 4 gear 70 enter into meshing, and the No. 2 gear 28 does not mesh with any gear. At this time, the centering drive unit 9 does not work. When the circuit board detection angle adjustment action is performed, the No. 2 servo motor 44 drives the worm 45 to rotate, the worm 45 drives the worm wheel 46 to rotate, and the worm wheel 46 drives the No. 3 connecting shaft 47 to rotate, and the No. 3 connecting shaft 4 7 drives the No. 1 connecting shaft 26 to rotate, the No. 1 connecting shaft 26 drives the No. 1 external spline 25 to rotate, thereby driving the No. 1 internal spline 24 to rotate, and then driving the No. 3 gear 29 to rotate, the No. 3 gear 29 drives the No. 4 gear 70 to rotate, the No. 4 gear 70 drives the No. 2 connecting shaft 37 to rotate, the No. 2 connecting shaft 37 drives the No. 2 external spline 38 to rotate, the No. 2 external spline 38 drives the No. 2 internal spline 39 to rotate, the No. 2 internal spline 39 drives the active pulley 42 to rotate, the active pulley 42 drives the driven pulley 43 to rotate, the driven pulley 43 drives the adjustment shaft 7 to rotate, the adjustment shaft 7 drives the positioning block 14 to rotate, thereby rotating the clamped PCB circuit board, which is convenient for detecting different surfaces of the PCB circuit board.

[0031] It should be noted that, see Fig.11 A tooth block 69 is fixed on the top of the No. 3 limit seat 30, and the tooth block 69 is meshed with the No. 4 gear 70. When the No. 2 gear 28 and the No. 1 gear 23 are meshed, the tooth block 69 will mesh with the No. 4 gear 70, which is equivalent to having a clamping effect on the No. 4 gear 70, so that the positioning block 14 will not swing up and down by itself during clamping.

[0032] It should be noted that, see Fig.10 The limiting member 18 includes an arc-shaped plate 65 fixed to one side of the No. 1 connecting plate 5, and a limiting groove 66 is provided on the arc-shaped plate 65. L-shaped blocks 67 are fixed to both ends of the positioning block 14, and a sliding column 68 is fixed to one end of the L-shaped block 67. The sliding column 68 is slidably connected to the arc-shaped plate 65 through the limiting groove 66. When the positioning block 14 rotates, the sliding column 68 will slide on the arc-shaped plate 65, so the positioning block 14 can maintain better circular motion without shaking.

[0033] Example 3: Please refer to Figure 8 and Fig. 9, this embodiment further explains other embodiments, the oil injection unit 13 shown in the figure includes a cylinder 48, the cylinder 48 is fixed to the outer wall of the installation frame 3, the piston block 49 is slidably connected to the inside of the cylinder 48, an oil inlet pipe 50 is fixedly connected to the lower left side of the cylinder 48 through a one-way valve, the end of the oil inlet pipe 50 away from the cylinder 48 is connected to the bottom of the oil box 12 through a valve seat, and an oil outlet pipe 51 is fixedly connected to the upper left side of the cylinder 48 through a one-way valve, the end of the oil outlet pipe 51 away from the cylinder 48 extends into the interior of the installation frame 3 and is fixedly connected to an oil delivery pipe 52, and the bottom of the oil delivery pipe 52 is fixedly connected to the bottom of the oil box 12. A plurality of oil spray heads 53 are fixed on the side, and the plurality of oil spray heads 53 are facing the power conversion unit 10. An air inlet pipe 54 is fixedly connected to the lower right side of the cylinder 48 through a one-way valve, and an air outlet pipe 55 is fixedly connected to the upper right side of the cylinder 48 through a one-way valve. The end of the oil outlet pipe 51 away from the cylinder 48 extends into the interior of the mounting frame 3 and is fixedly connected to an air supply pipe 56. A plurality of air spray heads 57 are fixed to one side of the bottom of the air supply pipe 56, and the plurality of air spray heads 57 are facing the power conversion unit 10. A reciprocating rod 58 is fixed to the right side of the piston block 49, and the output end of the linkage 22 is transmission-connected to the reciprocating rod 58.

[0034] Also, see Figure 8 The linkage member 22 includes an active bevel gear 59 fixedly connected to one end of the No. 1 screw rod 21, the active bevel gear 59 is meshedly connected to a passive bevel gear 60, a transmission shaft 61 is fixed in the middle hole of the passive bevel gear 60, the outer side of the transmission shaft 61 is rotatably connected to a No. 6 limit seat 62, the No. 6 limit seat 62 is fixedly connected to the inner bottom of the installation frame 3, a crank 63 is fixed to one end of the transmission shaft 61 located outside the installation frame 3, the end of the crank 63 away from the transmission shaft 61 is slidably connected to a transmission plate 64 through a limit pin, and the end of the reciprocating rod 58 away from the piston block 49 is fixedly connected to the middle of one side of the transmission plate 64.

[0035] When the PCB circuit board is clamped, one end of the first screw rod 21 drives the active bevel gear 59 to rotate, the active bevel gear 59 drives the passive bevel gear 60 to rotate, the passive bevel gear 60 rotates, the passive bevel gear 60 drives the transmission shaft 61 to rotate, the transmission shaft 61 drives the crank 63 to rotate, the crank 63 drives the transmission plate 64 to move left and right, and the transmission plate 64 drives the reciprocating rod 58 to move left and right; When the reciprocating plate moves from left to right, negative pressure is generated on the left side of the piston block 49. At this time, the one-way valve of the oil inlet pipe 50 opens, and the one-way valve of the oil outlet pipe 51 closes. The lubricating oil in the oil box 12 is sucked into the inner cavity of the cylinder 48 on the left side of the piston block 49. The right side of the piston block 49 is depressurized, the one-way valve of the air inlet pipe 54 is closed, and the one-way valve of the air outlet pipe 55 is opened. The air stored on the right side of the piston block 49 is discharged into the air supply pipe 56 through the air outlet pipe 55, and finally sprayed onto the No. 1 gear 23, the No. 2 gear 28, the No. 3 gear 29 and the No. 4 gear 70 through multiple nozzles 57 to purge the metal particles adsorbed on each gear, thereby ensuring the cleanliness and smoothness of the working environment of the gears. When the reciprocating plate moves from right to left, the left side of the piston block 49 is depressurized. At this time, the one-way valve of the oil inlet pipe 50 is closed, and the one-way valve of the oil outlet pipe 51 is opened. The lubricating oil sucked into the inner cavity of the cylinder 48 on the left side of the piston block 49 is discharged into the oil delivery pipe 52 through the oil outlet pipe 51, and finally discharged through multiple oil spray heads 53, which can realize automatic oil spray maintenance treatment of the gears, so that the centering drive unit 9 and the power conversion unit 10 can be lubricated and lubricated to ensure that both can work efficiently. Negative pressure is generated on the right side of the piston block 49, the one-way valve of the air inlet pipe 54 is opened, and the one-way valve of the air outlet pipe 55 is closed, so that the outside air is sucked into the inner cavity of the cylinder 48 on the right side of the piston block 49 for storage.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station detection device for a PCB circuit board, comprising: A detection platform (1) and a support box (2), wherein a mounting frame (3) is fixed on the support box (2), and the detection platform (1) is fixed on the top of the mounting frame (3); It is characterized by further comprising: Two limit bars (4) are symmetrically distributed and slidably penetrate and are connected to the detection platform (1); a first connecting plate (5) and a second connecting plate (6) are fixed to the top and bottom of the limit bar (4), respectively; a rotation shaft (7) is installed on the top of the first connecting plate (5) through a bearing seat; and clamping units (8) for centering and clamping PCB circuit boards of different shapes are fixed to the ends of the two rotation shafts (7) that are close to each other; A centering drive unit (9) installed inside the installation frame (3), a power conversion unit (10) being provided on one side of the centering drive unit (9), and a rotation transmission unit (11) being provided on the top of the power conversion unit (10); An oil box (12) is fixed on the outer wall of the installation frame (3), and an oil injection unit (13) is installed on one side of the oil box (12).

2. A PCB circuit board multi-station detection device according to claim 1, characterized in that: The clamping unit (8) comprises a positioning block (14), a telescopic column (15) and a spring (16); the rotation axis (7) is fixedly connected to the middle of one side of the positioning block (14); a plurality of guide holes (17) are evenly opened on a side of the positioning block (14) away from the rotation axis (7); a telescopic column (15) is slidably connected in each of the guide holes (17); one end of the telescopic column (15) located inside the guide hole (17) is fixedly connected to the spring (16); one end of the spring (16) away from the telescopic column (15) is fixedly connected to the bottom of the guide hole (17); and a stopper (18) is provided on the outside of the positioning block (14).

3. A PCB circuit board multi-station detection device according to claim 1, characterized in that: The centering drive unit (9) comprises a fixed shaft (19), the middle part of the fixed shaft (19) is rotatably connected to a first limit seat (20), the bottom of the first limit seat (20) is fixed to the inner bottom of the installation frame (3), both ends of the fixed shaft (19) are fixed with a first screw rod (21) through a coupling, the first screw rod (21) is threadedly connected to the second connecting plate (6) through a nut, one end of one of the first screw rods (21) is transmission-connected to a linkage member (22), the injection unit (13) is transmission-connected to the output end of the linkage member (22), the outer side of the fixed shaft (19) is fixedly sleeved with a first gear (23), and the power conversion unit (10) is arranged on one side of the first gear (23).

4. A PCB circuit board multi-station detection device according to claim 3, characterized in that: The power conversion unit (10) comprises a No. 1 internal spline (24), the No. 1 internal spline (24) is slidably sleeved with a No. 1 external spline (25), both ends of the No. 1 external spline (25) are fixed with a No. 1 connecting shaft (26), the outer side of the No. 1 connecting shaft (26) is rotatably connected with a No. 2 limit seat (27), the bottom of the No. 2 limit seat (27) is fixedly connected to the installation frame (3) through a fixing plate, the outer side of the No. 1 internal spline (24) is fixedly sleeved with a No. 2 gear (28) and a No. 3 gear (29), the middle part of the No. 1 internal spline (24) is rotatably connected with a No. 3 limit seat (30), and the inner bottom of the installation frame (3) is fixedly connected with a No. 1 servo motor (31), The output end of the No. 1 servo motor (31) is fixed with a No. 2 screw rod (32) via a coupling, and both ends of the No. 2 screw rod (32) are rotatably connected with a No. 4 limit seat (33), and the No. 4 limit seat (33) is fixedly connected to the inner bottom of the installation frame (3), and the outer side of the No. 2 screw rod (32) is connected with a moving block (34) via a nut thread, and the top of the moving block (34) is fixed with a No. 3 connecting plate (35), and the No. 3 connecting plate (35) is fixedly connected to the bottom of the No. 2 limit seat (27), and one end of one of the No. 1 connecting shafts (26) is transmission-connected with a driving member (36), and the rotation transmission unit (11) is arranged above the No. 1 external spline (25).

5. A PCB circuit board multi-station detection device according to claim 4, characterized in that: The rotation transmission unit (11) comprises a No. 2 connecting shaft (37) arranged parallel to the No. 1 external spline (25); a No. 4 gear (70) is fixedly sleeved on the middle part of the No. 2 connecting shaft (37); a No. 2 external spline (38) is fixedly sleeved on both ends of the No. 2 connecting shaft (37); a No. 2 internal spline (39) is slidably sleeved on the No. 2 external spline (38); a No. 5 limit seat (40) is rotatably connected to the outer side of the No. 2 internal spline (39); a support plate (41) is fixedly connected to the bottom of the No. 5 limit seat (40); one side of the support plate (41) is fixedly connected to the No. 2 connecting plate (6); a driving pulley (42) is fixedly sleeved on the outer side of the No. 2 internal spline (39); the driving pulley (42) is connected to a driven pulley (43) through a synchronous belt drive; the driven pulley (43) is fixedly sleeved on the rotation shaft (7).

6. A PCB circuit board multi-station detection device according to claim 4, characterized in that: The driving member (36) comprises a No. 2 servo motor (44), the No. 2 servo motor (44) being fixedly connected to the inner bottom of the mounting frame (3), the output end of the No. 2 servo motor (44) being fixedly connected to a worm (45), the worm (45) being meshingly connected to a worm wheel (46), a No. 3 connecting shaft (47) being fixed in a center hole of the worm wheel (46), the No. 3 connecting shaft (47) being fixedly connected to the No. 1 connecting shaft (26) via a coupling.

7. A PCB circuit board multi-station detection device according to claim 3, characterized in that: The oil injection unit (13) comprises a cylinder (48), wherein the cylinder (48) is fixed to the outer wall of the mounting frame (3), a piston block (49) is slidably connected to the interior of the cylinder (48), an oil inlet pipe (50) is fixedly connected to the lower left side of the cylinder (48) via a one-way valve, an end of the oil inlet pipe (50) away from the cylinder (48) is connected to the bottom of the oil box (12) via a valve seat, an oil outlet pipe (51) is fixedly connected to the upper left side of the cylinder (48) via a one-way valve, an end of the oil outlet pipe (51) away from the cylinder (48) extends into the interior of the mounting frame (3) and is fixedly connected to an oil delivery pipe (52), and a plurality of oil injection heads (53) are fixedly connected to one side of the bottom of the oil delivery pipe (52). , a plurality of the oil injection heads (53) are facing the power conversion unit (10); an air inlet pipe (54) is fixedly connected to the lower right side of the cylinder (48) via a one-way valve; an air outlet pipe (55) is fixedly connected to the upper right side of the cylinder (48) via a one-way valve; an end of the oil outlet pipe (51) away from the cylinder (48) extends into the interior of the installation frame (3) and is fixedly connected to an air supply pipe (56); a plurality of injection heads (57) are fixed to one side of the bottom of the air supply pipe (56); the plurality of injection heads (57) are facing the power conversion unit (10); a reciprocating rod (58) is fixed to the right side of the piston block (49); and an output end of the linkage member (22) is drivingly connected to the reciprocating rod (58).

8. A PCB circuit board multi-station detection device according to claim 7, characterized in that: The linkage member (22) comprises an active bevel gear (59) fixedly connected to one end of the first screw rod (21), the active bevel gear (59) being meshingly connected to a passive bevel gear (60), a transmission shaft (61) being fixed in a central hole of the passive bevel gear (60), a sixth limit seat (62) being rotatably connected to the outer side of the transmission shaft (61), the sixth limit seat (62) being fixedly connected to the inner bottom of the installation frame (3), a crank (63) being fixed to one end of the transmission shaft (61) located outside the installation frame (3), an end of the crank (63) away from the transmission shaft (61) being slidably connected to a transmission plate (64) via a limit pin, and an end of the reciprocating rod (58) away from the piston block (49) being fixedly connected to a middle portion of one side of the transmission plate (64).

9. A PCB circuit board multi-station detection device according to claim 2, characterized in that: The limiting member (18) comprises an arc-shaped plate (65) fixed to one side of the first connecting plate (5), a limiting groove (66) being provided on the arc-shaped plate (65), L-shaped blocks (67) being fixed at both ends of the positioning block (14), a sliding column (68) being fixed at one end of the L-shaped block (67), and the sliding column (68) being slidably connected to the arc-shaped plate (65) via the limiting groove (66).

10. A PCB circuit board multi-station detection device according to claim 5, characterized in that: A gear block (69) is fixed on the top of the No. 3 limiting seat (30), and the gear block (69) is meshingly connected with the No. 4 gear (70).

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