Testing device for printed circuit board

Abstract

The utility model relates to the technical field of circuit board testing, in particular to a testing device of a printed circuit board, which comprises a base, a conveyor is embedded in the center of the top of the base, a mounting frame is mounted at one end of the top of the base, and an image capturing detector is mounted on the mounting frame. A material pushing and sweeping mechanism is installed on the base and the installation frame, material collecting boxes are installed at the two ends of the base, multiple sets of limiting rollers are rotationally connected to the positions, located on the two sides of the conveyor, of the top of the base, the material pushing and sweeping mechanism comprises a material pushing assembly, a sweeping assembly and a material sucking assembly, and the material pushing assembly can block and limit a circuit board; the cleaning assembly is used for brushing and sweeping the surfaces of the circuit boards; the device is simple in structure and convenient to operate, a worker does not need to manually brush and sweep the circuit board and pick up fallen components, the labor amount of the worker is reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board testing, in particular to a testing device for a printed circuit board. Background Art

[0002] Printed circuit boards are an indispensable and important component in electronic equipment. They play a dual role of electrical and mechanical connection in electronic equipment, making testing extremely important in the production of printed circuit boards. If there is a problem with the product, it will cause serious consequences in the future use. The current detection method is mostly for staff to manually sweep the surface of the printed circuit board, sweep some components that are not firmly welded or poorly soldered, and then use the CCD imaging device to compare the image of the circuit board to be tested with a preset reference image to determine whether the product is qualified. The loose electrical components that are swept need to be picked up and collected one by one by the staff, which increases the workload of the staff and affects the detection efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a testing device for a printed circuit board to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A testing device for a printed circuit board comprises a base, a conveyor is embedded and installed at the top center of the base, a mounting frame is installed at one end of the top of the base, an imaging detector is installed on the mounting frame, a material pushing and cleaning mechanism is installed on the base and the mounting frame, a material receiving box is installed at both ends of the base, the top of the base is located on both sides of the conveyor and is rotatably connected to multiple groups of limiting rollers, the material pushing and cleaning mechanism comprises a material pushing component, a cleaning component and a material suction component, the material pushing component can block and limit the circuit board and push away unqualified circuit boards, the cleaning component is used to brush the surface of the circuit board, and the material suction component is used to centrally collect components with unqualified welding swept down by the cleaning component.

[0006] As a preferred scheme of the utility model, the pushing assembly includes a fixing column installed at one end of the base, one side of the fixing column is provided with a first adjusting slot, the inner side of the first adjusting slot is rotatably connected to the first threaded rod, the outer side of the first threaded rod is threadedly connected to the first adjusting block, one end of the first adjusting block is installed with a material stopping rack, and one end of the top of the material stopping rack is installed with a mounting column. One side of the mounting column is provided with a second adjusting slot, the inner side of the second adjusting slot is rotatably connected to the second threaded rod, and the outer side of the second threaded rod is threadedly connected to the baffle. One end of the fixing column is installed with a first motor, the driving end of the first motor extends to the inner side of the fixing column and is fixedly connected to the first threaded rod, one end of the mounting column is installed with a second motor, and the driving end of the second motor extends to the inner side of the mounting column and is fixedly connected to one end of the second threaded rod.

[0007] As a preferred solution of the utility model, the cleaning component includes a movable groove opened on one side of the material blocking frame, a reciprocating screw is rotatably connected to the inner side of the movable groove, a scraping plate is threadedly connected to the outer side of the reciprocating screw, a soft brush is installed at the bottom end of the scraping plate, and a third motor is installed on one side of the material blocking frame, and the driving end of the third motor extends to the inner side of the movable groove and is fixedly connected to one end of the reciprocating screw.

[0008] As a preferred solution of the utility model, the suction assembly includes a collecting box installed on one side of the mounting frame, a sealing cover is installed on the top of the collecting box through a clamping assembly, a suction pump is installed on the top of the sealing cover, an air outlet pipe extending to the interior of the collecting box is installed at the air outlet end of the suction pump, an air suction pipe is installed at the air intake end of the suction pump, three groups of bellows are arranged and installed on one side of the air suction pipe, a suction head is installed on the other end of the bellows, and multiple groups of placement racks are arranged and installed on the top of the scraping plate, and one end of the placement rack is fixedly connected to one end of the suction head.

[0009] As a preferred solution of the utility model, the snap-on assembly includes a positioning groove opened at the top corner of the collection box, and the bottom end of the sealing cover is equipped with multiple groups of positioning blocks snap-connected with the positioning groove, and the bottom end of the positioning block is embedded with a first fixing member.

[0010] As a preferred solution of the utility model, a second fixing piece corresponding to the first fixing piece is embedded and installed inside the collection box, and an observation window is embedded and installed on one side of the collection box.

[0011] As a preferred solution of the utility model, one of the first fixing member and the second fixing member is a first magnet, and the other of the first fixing member and the second fixing member is a second magnet, and the magnetic poles of the first magnet and the second magnet are opposite and attract each other.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the circuit board is placed on the conveyor for transportation, and the conveyor stops after it is transported to the bottom of the image detector. At this time, one side of the circuit board is in contact with the material blocking rack, and the second motor is started to drive the second threaded rod to rotate and cooperate with the second adjusting groove to drive the baffle to descend to block one side of the circuit board. The third motor is started to cooperate with the reciprocating screw rod to drive the soft brush at the bottom end of the scraping plate to brush back and forth on the circuit board. At the same time, the suction pump can be started to cooperate with the suction pipe, the exhaust pipe and the bellows to absorb and collect the fallen components into the inner side of the collection box. The structure is simple and the operation is convenient. There is no need for staff to manually brush the circuit board and pick up the fallen components, which reduces the workload of staff and improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A;

[0016] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure of part B.

[0017] In the figure: 1. base; 2. conveyor; 3. mounting frame; 4. image detector; 5. material collecting box; 6. limit roller; 7. fixing column; 8. first threaded rod; 9. first adjusting block; 10. material blocking frame; 11. mounting column; 12. second threaded rod; 13. baffle; 14. first motor; 15. second motor; 16. reciprocating screw rod; 17. scraping plate; 18. soft brush; 19. collecting box; 20. sealing cover; 21. suction pump; 22. bellows; 23. suction head; 24. positioning block; 25. first fixing piece; 26. observation window. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] Example:

[0020] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0021] A printed circuit board testing device comprises a base 1, a conveyor 2 is embedded and installed at the top center of the base 1, a mounting frame 3 is installed at one end of the top of the base 1, an image detector 4 is installed on the mounting frame 3, a material pushing and cleaning mechanism is installed on the base 1 and the mounting frame 3, both ends of the base 1 are installed with a material receiving box 5, the top of the base 1 is located on both sides of the conveyor 2 and is rotatably connected to multiple groups of limiting rollers 6, the material pushing and cleaning mechanism comprises a material pushing component, a cleaning component and a material suction component, the material pushing component can block and limit the circuit board and push away the unqualified circuit board, the cleaning component is used to brush the surface of the circuit board, and the material suction component is used to collect the unqualified welding components swept down by the cleaning component, and the testing device can be used when in use. The circuit board is placed on the conveyor 2 for transportation, and the conveyor 2 stops after it is transported to the bottom of the image detector 4. At this time, one side of the circuit board is in contact with the material blocking rack 10, and then the second motor 15 is started to drive the second threaded rod 12 to rotate and cooperate with the second adjusting groove to drive the baffle 13 to descend to block one side of the circuit board. The third motor is started to cooperate with the reciprocating screw rod 16 to drive the soft brush 18 at the bottom of the scraping plate 17 to brush back and forth on the circuit board. At the same time, the suction pump 21 can be started to cooperate with the suction pipe, the exhaust pipe and the bellows 22 to absorb and collect the fallen components into the inner side of the collection box 19. The structure is simple and the operation is convenient. There is no need for staff to manually brush the circuit board and pick up the fallen components, which reduces the workload of staff and improves the detection efficiency.

[0022] The second motor 15 is installed at one end of the mounting column 11, and the driving end of the second motor 15 extends to the inner side of the mounting column 11 and is fixedly connected to one end of the second threaded rod 12. The cleaning assembly includes a moving groove opened on one side of the material blocking frame 10, and a reciprocating screw rod 16 is rotatably connected to the inner side of the moving groove, and a scraping plate 17 is threadedly connected to the outer side of the reciprocating screw rod 16, and a soft brush 18 is installed at the bottom end of the scraping plate 17. A third motor is installed on one side of the material blocking frame 10, and the driving end of the third motor extends to the inner side of the moving groove and is fixedly connected to one end of the reciprocating screw rod 16. First, the circuit board is placed on the conveyor 2 for transportation. After it is transported to the bottom of the image detector 4, the conveyor 2 stops. At this time, one side of the circuit board is in contact with the material blocking frame 10, and then the second motor 15 is started to drive the second threaded rod 12 to rotate and cooperate with the second adjusting groove to drive the baffle 13 to descend to block one side of the circuit board. The third motor is started to cooperate with the reciprocating screw rod 16 to drive the soft brush 18 at the bottom end of the scraping plate 17 to brush back and forth on the circuit board.

[0023] The suction assembly includes a collecting box 19 installed on one side of the mounting frame 3, a sealing cover 20 is installed on the top of the collecting box 19 through a snap-on assembly, a suction pump 21 is installed on the top of the sealing cover 20, and an outlet pipe extending to the inside of the collecting box 19 is installed on the outlet end of the suction pump 21, and an air suction pipe is installed on the air suction end of the suction pump 21, and three groups of bellows 22 are arranged and installed on one side of the air suction pipe, and a suction head 23 is installed on the other end of the bellows 22, and a plurality of groups of placement racks are arranged and installed on the top of the scraping plate 17, one end of the placement rack is fixedly connected to one end of the suction head 23, and then, the suction pump 21 is started to cooperate with the suction pipe, the air outlet pipe and the bellows 22 to absorb and collect the fallen components into the inner side of the collecting box 19. The structure is simple and the operation is convenient. There is no need for the staff to manually brush the circuit board and pick up the fallen components, which reduces the workload of the staff and improves the detection efficiency.

[0024] The push assembly includes a fixed column 7 installed at one end of the base 1, a first adjusting groove is provided on one side of the fixed column 7, a first threaded rod 8 is rotatably connected to the inner side of the first adjusting groove, a first adjusting block 9 is threadedly connected to the outer side of the first threaded rod 8, a material blocking frame 10 is installed at one end of the first adjusting block 9, a mounting column 11 is installed at one end of the top of the material blocking frame 10, a second adjusting groove is provided on one side of the mounting column 11, a second threaded rod 12 is rotatably connected to the inner side of the second adjusting groove, a baffle 13 is threadedly connected to the outer side of the second threaded rod 12, and a first adjusting block 10 is installed at one end of the fixed column 7. A motor 14, the driving end of the first motor 14 extends to the inner side of the fixed column 7 and is fixedly connected to the first threaded rod 8. Furthermore, after the scraping is completed, the image detector 4 can be used for detection. If the circuit board is qualified, the first motor 14 is started to drive the first threaded rod 8 to rotate, and the first adjustment block 9 and the first adjustment slot are cooperated to drive the material stopper 10 to push the circuit board into one group of receiving boxes 5. If the circuit board is unqualified, the baffle 13 can be raised, and then the material stopper 10 can be retracted, and the conveyor 2 is started to drive the circuit board into the inner side of another group of receiving boxes 5 for classification and collection.

[0025] The snap-on assembly includes a positioning groove opened at the top corner of the collection box 19, and a plurality of positioning blocks 24 that are snap-connected to the positioning groove are installed at the bottom end of the sealing cover 20. A first fixing piece 25 is embedded and installed at the bottom end of the positioning block 24, and a second fixing piece corresponding to the first fixing piece 25 is embedded and installed inside the collection box 19. An observation window 26 is embedded and installed on one side of the collection box 19. One of the first fixing piece 25 and the second fixing piece is a first magnet, and the other of the first fixing piece 25 and the second fixing piece is a second magnet. The magnetic poles of the first magnet and the second magnet are opposite and attract each other. Furthermore, the amount of collected components can be determined by checking the observation window 26. If the stock is too much, the sealing cover 20 can be pulled upward to separate the first fixing piece 25 and the second fixing piece. Otherwise, the positioning block 24 can be inserted into the positioning groove for adsorption during installation.

[0026] The implementation principle of a printed circuit board testing device in the embodiment of the present application is as follows: when in use, the testing device can be placed on a conveyor 2 for transportation, and after it is transported to the bottom of the image detector 4, the conveyor 2 stops, at which time one side of the circuit board is in contact with the material blocking rack 10, and then the second motor 15 is started to drive the second threaded rod 12 to rotate and cooperate with the second adjusting groove to drive the baffle 13 to descend to block one side of the circuit board, and the third motor is started to cooperate with the reciprocating screw rod 16 to drive the soft brush 18 at the bottom of the scraping plate 17 to brush back and forth on the circuit board, and at the same time, the suction pump 21 can be started to cooperate with the suction pipe, the exhaust pipe and the bellows 22 to absorb and collect the fallen components into the inner side of the collection box 19, which has a simple structure and is easy to operate, and there is no need for staff to manually brush the circuit board and pick up the fallen components. The components of the packaging are cleaned, the workload of the staff is reduced, and the inspection efficiency is improved. After the scraping is completed, the imaging detector 4 can be used for inspection. If the circuit board is qualified, the first motor 14 is started to drive the first threaded rod 8 to rotate, and the first adjusting block 9 and the first adjusting groove are cooperated to drive the material stopper 10 to push the circuit board into one of the groups of receiving boxes 5. If the circuit board is unqualified, the baffle 13 can be raised, and then the material stopper 10 can be retracted, and the conveyor 2 is started to drive the circuit board into the inner side of another group of receiving boxes 5 for classified collection. The amount of collected components can be judged by checking the observation window 26. If the stock is too much, the sealing cover 20 can be pulled upward to separate the first fixing member 25 and the second fixing member. On the contrary, the positioning block 24 can be inserted into the positioning groove for adsorption during installation.

[0027] The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0028] Although the 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 printed circuit board testing device, comprising a base (1), characterized in that: A conveyor (2) is embedded and installed at the center of the top of the base (1); a mounting frame (3) is installed at one end of the top of the base (1); an image detector (4) is installed on the mounting frame (3); a material pushing and cleaning mechanism is installed on the base (1) and the mounting frame (3); a material receiving box (5) is installed at both ends of the base (1); the top of the base (1) is located on both sides of the conveyor (2) and is rotatably connected to multiple groups of limiting rollers (6); the material pushing and cleaning mechanism includes a material pushing component, a cleaning component and a material suction component; the material pushing component can block and limit the circuit board and push away unqualified circuit boards; the cleaning component is used to brush the surface of the circuit board; the material suction component is used to collect unqualified welding components swept off by the cleaning component.

2. A printed circuit board testing device according to claim 1, characterized in that: The pusher assembly comprises a fixed column (7) mounted on one end of the base (1), a first adjustment slot is provided on one side of the fixed column (7), a first threaded rod (8) is rotatably connected to the inner side of the first adjustment slot, a first adjustment block (9) is threadedly connected to the outer side of the first threaded rod (8), a material blocking frame (10) is mounted on one end of the first adjustment block (9), a mounting column (11) is mounted on one end of the top of the material blocking frame (10), a second adjustment slot is provided on one side of the mounting column (11), and the second adjustment slot is provided on the inner side of the first adjustment slot. A second threaded rod (12) is rotatably connected to the inner side of the groove, and a baffle (13) is threadedly connected to the outer side of the second threaded rod (12). A first motor (14) is installed at one end of the fixed column (7), and a driving end of the first motor (14) extends to the inner side of the fixed column (7) and is fixedly connected to the first threaded rod (8). A second motor (15) is installed at one end of the mounting column (11), and a driving end of the second motor (15) extends to the inner side of the mounting column (11) and is fixedly connected to one end of the second threaded rod (12).

3. A printed circuit board testing device according to claim 2, characterized in that: The cleaning assembly comprises a movable groove opened on one side of the material blocking frame (10), a reciprocating screw (16) is rotatably connected to the inner side of the movable groove, a scraping plate (17) is threadedly connected to the outer side of the reciprocating screw (16), a soft brush (18) is installed at the bottom end of the scraping plate (17), and a third motor is installed on one side of the material blocking frame (10), and the driving end of the third motor extends to the inner side of the movable groove and is fixedly connected to one end of the reciprocating screw (16).

4. A printed circuit board testing device according to claim 3, characterized in that: The suction assembly comprises a collecting box (19) mounted on one side of the mounting frame (3); a sealing cover (20) is mounted on the top of the collecting box (19) via a snap-on assembly; a suction pump (21) is mounted on the top of the sealing cover (20); an air outlet pipe extending into the interior of the collecting box (19) is mounted on the air outlet end of the suction pump (21); an air suction pipe is mounted on the air intake end of the suction pump (21); three groups of bellows (22) are arranged on one side of the air suction pipe; a suction head (23) is mounted on the other end of the bellows (22); and a plurality of placement racks are arranged on the top of the scraping plate (17); one end of the placement rack is fixedly connected to one end of the suction head (23).

5. A printed circuit board testing device according to claim 4, characterized in that: The snap-fit ​​assembly comprises a positioning groove opened at the top corner of the collection box (19), and the bottom end of the sealing cover (20) is equipped with a plurality of positioning blocks (24) snap-fitted with the positioning groove, and the bottom end of the positioning block (24) is embedded with a first fixing member (25).

6. A printed circuit board testing device according to claim 5, characterized in that: A second fixing piece corresponding to the first fixing piece (25) is embedded and installed inside the collection box (19), and an observation window (26) is embedded and installed on one side of the collection box (19).

7. A printed circuit board testing device according to claim 6, characterized in that: One of the first fixing member (25) and the second fixing member is a first magnet, and the other of the first fixing member (25) and the second fixing member is a second magnet. The magnetic poles of the first magnet and the second magnet are opposite and attract each other.

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