Plug hole inspection device for single-sided printed circuit board

Abstract

The utility model discloses a single-sided printed circuit board plug hole inspection device which comprises a first conveying belt, a second conveying belt, a bearing plate, a fixed clamping mechanism, a hydraulic cylinder and a detection probe, a circuit board is conveyed to the bearing plate through the first conveying belt, and a suction cup on a second mounting plate is driven to descend through a second electric push rod; a circuit board is preliminarily adsorbed and fixed through a suction cup and is lifted, a first electric push rod drives a connecting rod to move, so that a sliding rod is driven to move in a sliding groove, a first mounting plate is driven to move, the first mounting plate moves to enable the distance between clamping plates on the two sides to be adjustable, and the side end of the circuit board is clamped through the clamping plates on the two sides; according to the circuit board fixing device, the circuit boards of different sizes can be lifted and fixed through cooperation of the clamping plates, the supporting plates and the suction cups, good universality is achieved, the detection probe shoots the circuit boards for imaging, comparison with a database is carried out, and the circuit boards are prevented from shaking to affect imaging of the detection probe. And assembly line detection of the circuit board is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of printed circuit board processing, and particularly relates to a plug hole inspection device for a single-sided printed circuit board. Background Art

[0002] A printed circuit board, also known as a PCB board, is an important electronic component, a support for electronic components, and a carrier for electrical interconnection of electronic components. To prevent tin from penetrating through the via holes during wave soldering of the PCB and causing short circuits, and to prevent tin beads from popping out during wave soldering and causing short circuits in the PCB circuit board, corresponding plug hole process treatments are carried out on the circuit board. During the processing of plug holes, problems such as unqualified plug hole fullness, hole mouth cracks, false copper leakage, and the presence of air bubbles and cavities inside will affect the overall yield of the circuit board. Usually, on the production line, manual sampling inspection is used to batch detect the circuit board, which requires a high level of proficiency for workers and has low detection efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a plug hole inspection device for a single-sided printed circuit board to solve the technical problems in the prior art that during the processing of plug holes, problems such as unqualified plug hole fullness, hole mouth cracks, false copper leakage, and the presence of air bubbles and cavities inside will affect the overall yield of the circuit board. Usually, on the production line, manual sampling inspection is used to batch detect the circuit board, which requires a high level of proficiency for workers and has low detection efficiency.

[0004] The technical problems to be solved by the utility model can be realized through the following technical solutions:

[0005] A plug hole inspection device for a single-sided printed circuit board, comprising:

[0006] A bracket, on which a supporting plate is fixedly installed. One end of the bracket is provided with a conveyor belt one, and the other end of the bracket is provided with a conveyor belt two. Above the supporting plate, a horizontally arranged hydraulic cylinder is provided, the driving end of the hydraulic cylinder is arranged towards the conveyor belt two, a connecting end is arranged at the driving end of the hydraulic cylinder, a through groove is opened on the supporting plate, and a detection probe is arranged in the through groove;

[0007] The fixed clamping mechanism includes a fixed block. The upper end of the fixed block is fixedly connected to the connection end. On both sides of the fixed block, electric push rods I are symmetrically arranged and fixedly connected. The driving end of the electric push rod I is fixedly connected to a telescopic rod. A connecting rod is fixedly connected to the telescopic rod. The lower end of the fixed block is fixedly connected to a connecting plate. At both ends of the connecting plate, chute plates are fixedly connected. The chute plates are arranged parallel to the electric push rod I. A chute is penetrated along the length direction of the chute plate. A sliding rod is movably arranged in the chute. The upper and lower ends of the sliding rod are respectively fixedly connected to a limiting plate I and a limiting plate II. Both ends of the connecting rod are fixedly connected to the limiting plate I. An installation plate I is fixedly connected to the limiting plate II. A clamping plate is arranged below the installation plate I. A support plate is fixedly connected to the lower end of the clamping plate. A liftable installation plate II is arranged below the connecting plate. A suction cup is fixedly connected to the installation plate II.

[0008] As a further solution of the present utility model: A vertically arranged electric push rod II is fixedly connected to the lower end of the connecting plate. The driving end of the electric push rod II is arranged downward. A lifting rod is fixedly connected to the driving end of the electric push rod II. The installation plate II is fixedly connected to the lifting rod. A connecting rod is fixedly connected to the lower end of the installation plate I. The clamping plate is fixedly connected to the connecting rod.

[0009] As a further solution of the present utility model: It further includes: a probe installation plate. A detection probe is fixedly connected to the probe installation plate. A bracket is fixedly connected to the lower end of the probe installation plate.

[0010] As a further solution of the present utility model: Support plates are fixedly connected to both sides of the bracket. Lifting mechanisms are arranged on both sides of the bracket. The driving end of the lifting mechanism is fixedly connected to the support plate. The lifting mechanism is arranged on the supporting plate.

[0011] As a further solution of the present utility model: A fixed frame is fixedly connected to the bracket. A fixed plate is fixedly connected to the fixed frame. A hydraulic cylinder is fixedly connected to the fixed plate. A hydraulic cylinder telescopic rod is fixedly connected to the driving end of the hydraulic cylinder. The hydraulic cylinder telescopic rod is fixedly connected to the connection end.

[0012] As a further solution of the present utility model: A guiding plate is arranged at the gap between the conveyor belt I and the supporting plate. A guiding plate is fixedly connected to the supporting plate.

[0013] The beneficial effects of the present utility model:

[0014] 1. The utility model conveys the circuit board to the supporting plate through conveyor belt 1. The sucker on mounting plate 2 is driven by electric push rod 2 to descend, and the circuit board is initially adsorbed and fixed by the sucker and lifted. Electric push rod 1 drives the connecting rod to move, thereby driving the sliding rod to move in the sliding groove, and then driving mounting plate 1 to move. The distance between the two clamping plates on mounting plate 1 can be adjusted. The side ends of the circuit board are clamped by the two clamping plates, further firmly fixing the circuit board to prevent the circuit board from shaking and affecting the imaging of the detection probe. The supporting plate arranged below the clamping plate can prevent the circuit board from accidentally falling off, enabling both ends of the circuit board to be lapped on the supporting plate, thereby reducing the clamping force of the clamping plate on the circuit board and preventing damage to the circuit board when clamping and fixing it. This device can lift and fix circuit boards of different sizes through the cooperation of the clamping plate, supporting plate and sucker, with good versatility. After the circuit board is fixed and lifted by the clamping mechanism, the detection probe takes pictures of the circuit board for imaging and compares it with the database to achieve the linear detection of the circuit board in a production line;

[0015] 2. The utility model raises the detection probe from the through groove through the lifting mechanism, so that the imaging field of view of the detection probe is not interfered by the through groove, ensuring the imaging quality. During the transportation of the circuit board, the detection probe can be hidden in the through groove to prevent interference with the transportation of the circuit board. After the imaging of the circuit board is completed, the driving end of the hydraulic cylinder drives the whole clamping mechanism to move above conveyor belt 2 and put down the circuit board, thus completing the automatic transportation of the circuit board after imaging and improving the automation degree of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model with reference to the drawings.

[0017] Figure 1 is a schematic three-dimensional structure of the present utility model Figure 1 ;

[0018] Figure 2 is a schematic three-dimensional structure of the present utility model Figure 2 ;

[0019] Figure 3 is a schematic diagram of the connection relationship among the supporting plate through groove, the probe mounting plate and the detection probe in the present utility model;

[0020] Figure 4 is a schematic three-dimensional structure of the clamping mechanism of the present utility model Figure 1 ;

[0021] Figure 5 is a schematic three-dimensional structure of the clamping mechanism of the present utility model Figure 2 ;

[0022] Figure 6 is a schematic diagram of a partially sectional structure of the clamping mechanism of the present utility model.

[0023] In the figure: 1. First conveyor belt; 2. Second conveyor belt; 3. First support frame; 4. Second support frame; 5. Bracket; 6. Supporting plate; 7. Fixed clamping mechanism; 71. Fixed block; 72. First electric push rod; 73. Connecting plate; 74. Telescopic rod; 75. Connecting rod; 76. Chute plate; 77. Chute; 78. Slide rod; 79. First limiting plate; 710. Second limiting plate; 711. First mounting plate; 712. Connecting rod; 713. Clamping plate; 714. Supporting plate; 715. Second electric push rod; 716. Second mounting plate; 717. Suction cup; 8. Fixed frame; 9. Fixed plate; 10. Hydraulic cylinder; 11. Connection end; 12. Guide plate; 13. Guide board; 14. Through groove; 15. Probe mounting plate; 16. Detection probe; 17. Bracket; 18. Lifting mechanism. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] As Figures 1 - 6 shown, a single-sided printed circuit board plug hole inspection device includes:

[0026] A bracket 5, on which a supporting plate 6 is fixedly installed. At one end of the bracket 5, a first conveyor belt 1 is provided, and at the other end of the bracket 5, a second conveyor belt 2 is provided. Above the supporting plate 6, a horizontally arranged hydraulic cylinder 10 is provided, and the driving end of the hydraulic cylinder 10 faces the second conveyor belt 2. A connection end 11 is provided at the driving end of the hydraulic cylinder 10. A through groove 14 is opened on the supporting plate 6, and a detection probe 16 is arranged in the through groove 14;

[0027] The clamping mechanism 7 includes a fixed block 71, the upper end of the fixed block 71 is fixedly connected to the connecting end 11, the two sides of the fixed block 71 are symmetrically arranged and fixedly connected with an electric push rod 72, the driving end of the electric push rod 72 is fixedly connected with a telescopic rod 74, and the telescopic rod 74 is fixedly connected with a connecting rod 75, the lower end of the fixed block 71 is fixedly connected with a connecting plate 73, and both ends of the connecting plate 73 are fixedly connected with a slide plate 76, the slide plate 76 is arranged parallel to the electric push rod 72, and a plurality of slide plates 76 are provided along the length direction of the slide plate 76. A slide groove 77, in which a slide rod 78 is movably arranged, and the upper and lower ends of the slide rod 78 are respectively fixedly connected to a limit plate 1 79 and a limit plate 2 710, and the two ends of the connecting rod 75 are fixedly connected to the limit plate 1 79, and a mounting plate 1 711 is fixedly connected to the limit plate 2 710, and a clamping plate 713 is arranged below the mounting plate 1 711, and a support plate 714 is fixedly connected to the lower end of the clamping plate 713, and a liftable mounting plate 2 716 is arranged below the connecting plate 73, and a suction cup 717 is fixedly connected to the mounting plate 2 716.

[0028] The lower end of the connecting plate 73 is fixedly connected to a vertically arranged electric push rod 2 715, the driving end of the electric push rod 2 715 is set downward, a lifting rod is fixedly connected to the driving end of the electric push rod 2 715, the mounting plate 2 716 is fixedly connected to the lifting rod, the lower end of the mounting plate 1 711 is fixedly connected to a connecting rod 712, and the clamping plate 713 is fixedly connected to the connecting rod 712.

[0029] A single-sided printed circuit board plugging inspection device also includes: a probe mounting plate 15, a detection probe 16 fixedly connected to the probe mounting plate 15, a bracket 17 fixedly connected to the lower end of the probe mounting plate 15, support plates fixedly connected to both sides of the bracket 17, a lifting mechanism 18 is arranged on both sides of the bracket 17, a driving end of the lifting mechanism 18 is fixedly connected to the support plate, the lifting mechanism 18 is arranged on the supporting plate 6, and the lifting mechanism 18 is a slide cylinder.

[0030] The bracket 5 is fixedly connected with a fixing frame 8, the fixing frame 8 is fixedly connected with a fixing plate 9, the hydraulic cylinder 10 is fixedly connected with the fixing plate 9, the driving end of the hydraulic cylinder 10 is fixedly connected with a hydraulic cylinder telescopic rod, and the hydraulic cylinder telescopic rod is fixedly connected with the connecting end 11.

[0031] In some specific embodiments, a guide plate 13 is provided in the gap between the conveyor belt 1 and the supporting plate 6, and a guide plate 12 is fixedly connected to the supporting plate 6. The guide plate 13 is used to prevent the gap between the conveyor belt 1 and the supporting plate 6 from blocking the transportation of the circuit board, and the guide plate 12 is used to prevent the circuit board from deviating during the transportation process.

[0032] In some specific embodiments, one end of the bracket 5 is fixedly connected to the mounting plates on both sides of the conveyor belt 1, and the other end of the bracket 5 is fixedly connected to the mounting plates on both sides of the conveyor belt 2.

[0033] In some specific embodiments, the bottom surfaces of the mounting plates on both sides of the conveyor belt 1 are fixedly connected with a first support frame 3 for supporting the conveyor belt 1, and the bottom surfaces of the mounting plates on both sides of the conveyor belt 2 are fixedly connected with a second support frame 4 for supporting the conveyor belt 2.

[0034] To facilitate the understanding of this solution embodiment by those skilled in the art, the working principle of this solution will be briefly described below in combination with a specific application scenario:

[0035] The circuit board is conveyed to the supporting plate 6 through the conveyor belt 1. The electric push rod 715 drives the suction cup 717 on the mounting plate 716 to descend. The circuit board is initially adsorbed and fixed by the suction cup 717 and lifted. The electric push rod 72 drives the connecting rod 75 to move, thereby driving the sliding rod 78 to move in the sliding groove 77, and then driving the mounting plate 711 to move. The movement of the mounting plate 711 makes the distance between the two clamping plates 713 adjustable. The side ends of the circuit board are clamped by the two clamping plates 713, further firmly fixing the circuit board to prevent the circuit board from shaking and affecting the imaging of the detection probe 16. The support plate 714 arranged below the clamping plate 713 can prevent the circuit board from accidentally falling off, so that both ends of the circuit board can be lapped on the support plate 714, thereby reducing the clamping force of the clamping plate 713 on the circuit board and preventing damage to the circuit board when clamping and fixing it. This device can lift and fix circuit boards of different sizes through the cooperation of the clamping plate 713, the support plate 714 and the suction cup 717, and has good versatility;

[0036] After the fixed clamping mechanism 7 fixes and lifts the circuit board, the detection probe 16 takes a picture of the circuit board for imaging and compares it with the database to realize the flowing linear detection of the circuit board. The lifting mechanism 18 raises the detection probe 16 from the through groove 14, so that the imaging field of view of the detection probe 16 is not interfered by the through groove 14, ensuring the imaging quality. During the transportation of the circuit board, the detection probe 16 can be hidden in the through groove 14 to prevent interference with the transportation of the circuit board. After the imaging of the circuit board is completed, the driving end of the hydraulic cylinder 10 drives the whole fixed clamping mechanism 7 to move above the conveyor belt 2 and put down the circuit board, thus completing the automatic transportation of the circuit board after imaging and improving the automation degree of the device.

[0037] The above has described several embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto and cannot be considered as limiting the scope of implementation of the present invention. All equal changes and improvements made according to the scope of the present invention application should still fall within the patent coverage scope of the present invention.

Claims

1. A single-sided printed circuit board plugging inspection device, characterized in that: include: A bracket (5), a supporting plate (6) is fixedly mounted on the bracket (5), a conveyor belt 1 (1) is arranged at one end of the bracket (5), a conveyor belt 2 (2) is arranged at the other end of the bracket (5), a horizontally arranged hydraulic cylinder (10) is arranged above the supporting plate (6), a driving end of the hydraulic cylinder (10) is arranged toward the conveyor belt 2 (2), a connecting end (11) is arranged at the driving end of the hydraulic cylinder (10), a through groove (14) is opened on the supporting plate (6), and a detection probe (16) is arranged in the through groove (14); The clamping mechanism (7) comprises a fixed block (71), the upper end of the fixed block (71) is fixedly connected to the connecting end (11), the two sides of the fixed block (71) are symmetrically arranged and fixedly connected with an electric push rod (72), the driving end of the electric push rod (72) is fixedly connected with a telescopic rod (74), the telescopic rod (74) is fixedly connected with a connecting rod (75), the lower end of the fixed block (71) is fixedly connected with a connecting plate (73), both ends of the connecting plate (73) are fixedly connected with a slide plate (76), the slide plate (76) is arranged parallel to the electric push rod (72), and a slide groove is provided along the length direction of the slide groove plate (76). A groove (77) is provided in the slide groove (77), a slide bar (78) is movably provided in the slide groove (77), the upper and lower ends of the slide bar (78) are respectively fixedly connected to the limit plate 1 (79) and the limit plate 2 (710), the two ends of the connecting rod (75) are fixedly connected to the limit plate 1 (79), the limit plate 2 (710) is fixedly connected to the mounting plate 1 (711), a clamping plate (713) is provided below the mounting plate 1 (711), the lower end of the clamping plate (713) is fixedly connected to the supporting plate (714), a liftable mounting plate 2 (716) is provided below the connecting plate (73), and a suction cup (717) is fixedly connected to the mounting plate 2 (716).

2. A single-sided printed circuit board plugging inspection device according to claim 1, characterized in that: The lower end of the connecting plate (73) is fixedly connected to a vertically arranged electric push rod 2 (715), the driving end of the electric push rod 2 (715) is arranged downward, the driving end of the electric push rod 2 (715) is fixedly connected to a lifting rod, the second mounting plate (716) is fixedly connected to the lifting rod, the lower end of the mounting plate 1 (711) is fixedly connected to a connecting rod (712), and the clamping plate (713) is fixedly connected to the connecting rod (712).

3. A single-sided printed circuit board plugging inspection device according to claim 1, characterized in that: Also includes: A probe mounting plate (15) is fixedly connected to the detection probe (16) on the probe mounting plate (15), and a bracket (17) is fixedly connected to the lower end of the probe mounting plate (15).

4. A single-sided printed circuit board plugging inspection device according to claim 3, characterized in that: Support plates are fixedly connected to both sides of the bracket (17), and lifting mechanisms (18) are arranged on both sides of the bracket (17). The driving end of the lifting mechanism (18) is fixedly connected to the support plates, and the lifting mechanism (18) is arranged on the supporting plate (6).

5. The single-sided printed circuit board plugging inspection device according to claim 1, characterized in that: The bracket (5) is fixedly connected to a fixing frame (8), the fixing frame (8) is fixedly connected to a fixing plate (9), the hydraulic cylinder (10) is fixedly connected to the fixing plate (9), the driving end of the hydraulic cylinder (10) is fixedly connected to a hydraulic cylinder telescopic rod, and the hydraulic cylinder telescopic rod is fixedly connected to a connecting end (11).

6. The single-sided printed circuit board plugging inspection device according to claim 1, characterized in that: A guide plate (13) is arranged in the gap between the conveyor belt 1 (1) and the supporting plate (6), and a guide plate (12) is fixedly connected to the supporting plate (6).

Images