Circuit board carbon ink layer testing device and circuit board

Abstract

The present invention discloses a circuit board carbon ink layer testing device and a circuit board, which belongs to the field of circuit board detection, and comprises: a conveying mechanism, an exhaust pipe, a pressing frame and an ultrasonic probe; the conveying mechanism is installed on a workbench; the conveying mechanism is provided with a circulating conveyor belt; the workbench is provided with an exhaust pipe and a pressing frame which move along the vertical direction; the exhaust pipe is connected to the exhaust fan; the workbench is symmetrically fixed with electric push rods; the electric push rods are all fixedly installed with movable frames; the movable frames are all slidably connected to the workbench; the movable frames are all rotatably connected with a screw rod; the movable frame is fixedly installed with a motor; compared with the prior art, the circuit board carbon ink layer testing device of the present application detects the adhesion of the carbon ink layer on the circuit board by exhausting air through the exhaust pipe; detects whether the carbon ink layer is defective by using an ultrasonic probe, and marks the circuit board with problems with a marker pen.

Description

Technical Field

[0001] The invention relates to the field of circuit board detection, and in particular to a circuit board carbon ink layer testing device and a circuit board. Background Art

[0002] Here, the copper pads on the circuit board can be protected by coating with a carbon ink layer. This surface treatment method can be used for radio frequency shielding, keyboards, keyboards, remote controls, automobiles and welding equipment. When the carbon ink layer is used for treatment, the adhesion and flatness of the carbon ink layer need to be tested, but the current adhesion and flatness detection of the carbon ink layer requires manual detection. The operator needs to use tools to detect the adhesion and flatness, and needs to screen the quality of the circuit board according to the detection standard. This manual testing method is not only slow in testing speed and labor-intensive, but also the accuracy of the test is easily affected by human factors; therefore, a circuit board carbon ink layer testing device is proposed. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention proposes a circuit board carbon ink layer testing device and a circuit board. The device exhausts air toward the surface of the circuit board through an exhaust pipe, and uses an ultrasonic probe to detect the circuit board that has passed the exhaust test, thereby screening out qualified circuit boards.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A circuit board carbon ink layer testing device and a circuit board, comprising: a conveying mechanism, an exhaust pipe, a pressing frame and an ultrasonic probe; the conveying mechanism is installed on a workbench; the conveying mechanism is provided with a circulating conveyor belt; the workbench is equipped with an exhaust pipe and a pressing frame that move along the vertical direction; the exhaust pipe is connected to the exhaust fan; the workbench is symmetrically fixed with electric push rods; the electric push rods are all fixedly installed with a movable frame; the movable frames are all slidably connected to the workbench; the movable frames are all rotatably connected with screw rod 1; the movable frame is fixedly installed with motor 1; the motor 1 is connected with screw rod 1; the screw rod 1 is threadedly connected with a movable plate; the movable plate is symmetrically fixedly installed with a screw seat; the screw seat is rotatably connected with screw 2 and screw 3; the screw 2 is driven by motor 6; the screw 2 and the screw 3 are both fixedly installed with spur gears; the spur gears mesh with each other;

[0006] The movable plate is slidably connected with a movable block; the movable block is fixedly installed with a driving rod; the driving rod is fixedly installed with an intermediate shaft between the screw rod 2 and the screw rod 3; the intermediate shaft is rotatably connected with the transmission rod 1 and the transmission rod 2; the driving rod is provided with limiting columns on both sides of the transmission rod 1; the transmission rod 1 is fixedly installed with a driving block between the screw rod 2 and the screw rod 3; the driving block is provided with a thread groove on one side close to the screw rod 2 and the screw rod 3; the thread grooves are adapted to the screw rod 2 and the screw rod 3; the driving block is connected with the screw rod 2 through the screw rod 3; the screw rod 3 ... The groove is meshed with the screw rod 2 or the screw rod 3; the transmission rod 1 and the transmission rod 2 are connected by a spring; the movable plate is fixedly installed with two parallel guide plates between the screw rod seats; the angle between the guide plate and the axis of the screw rod 2 is less than 90 degrees; the transmission rod 2 is fixedly installed with a guide column between the guide plates; the movable block is fixedly installed with motor 2; the motor 2 is fixedly installed with detection seat 1 and detection seat 2; the detection seat 1 is fixedly installed with an ultrasonic probe; the detection seat 2 is fixedly installed with a marker pen; the movable block is installed with a clamping block.

[0007] In some embodiments, the workbench is symmetrically and fixedly installed with two lifting seats; the lifting seats are rotatably connected with screw rods four; the screw rods four are fixedly installed with sprockets; the sprockets are connected by chains; one of the screw rods four is driven by motor three; the screw rods four are threadedly connected with lifting columns; the lifting columns are fixedly installed with mounting plates; the mounting plate is fixedly installed with the exhaust duct; the lifting columns are fixedly installed with the pressing frame; the pressing frame includes a fixed frame, a pressing block one and a pressing block two; the pressing frame is rotatably connected with screw rods five; the screw rods five are threadedly connected with the pressing block one; the pressing block one is slidably connected with an optical axis; the optical axis and the pressing block two are connected to the fixed frame.

[0008] In some embodiments, the conveying mechanism includes a motor four, a rotating shaft and a support roller; the workbench is symmetrically rotatably connected to the rotating shaft; the rotating shafts are fixedly mounted with rollers; the rollers are connected through the conveyor belts; the support rollers are arranged between the conveyor belts; the support rollers rest against the side of the conveyor belt close to the ultrasonic probe; the workbench is symmetrically and fixedly mounted with the motor four; and the motor four is respectively connected to one of the rotating shafts.

[0009] In some embodiments, a pneumatic suction cup is fixedly mounted on the workbench; and a camera is arranged on one side of the workbench close to the pneumatic suction cup.

[0010] In some embodiments, the workbench is provided with at least two storage boxes.

[0011] The present invention also provides a circuit board to be tested by the circuit board carbon ink layer testing device as described above, wherein the surface of the circuit board is coated with a carbon ink layer.

[0012] Beneficial effects of the present invention:

[0013] The circuit board carbon ink layer testing device of the present invention detects the adhesion of the carbon ink layer on the circuit board by exhausting air through an exhaust pipe; detects whether the carbon ink layer is defective by an ultrasonic probe, and marks the circuit board with problems with a marker pen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0016] Figure 2 This is a schematic diagram of the lateral structure of the present application;

[0017] Figure 3 This is an enlarged structural diagram of location A of this application;

[0018] Figure 4 This is an enlarged structural diagram of point B of this application. DETAILED DESCRIPTION

[0019] 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.

[0020] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0022] A circuit board carbon ink layer testing device and a circuit board, comprising: a conveying mechanism, an exhaust pipe 2, a pressing frame and an ultrasonic probe 24; the conveying mechanism is installed on a workbench; the conveying mechanism is provided with a circulating conveyor belt 1; the workbench is provided with an exhaust pipe 2 and a pressing frame moving along a vertical direction; the exhaust pipe 2 is connected to an exhaust fan; the exhaust pipe 2 performs exhaust on the circuit board under the action of the exhaust fan, thereby giving suction to the carbon ink layer, the carbon ink layer with qualified adhesion will not be separated from the circuit board, and the carbon ink layer with unqualified adhesion will be separated from the circuit board, and the pressing frame presses the circuit board to prevent the circuit board from being sucked away;

[0023] The workbench is symmetrically fixedly installed with electric push rods 3; the electric push rods 3 are all fixedly installed with movable frames 4; the electric push rods 3 are used to drive the movable frames 4 to move; the movable frames 4 are all slidably connected to the workbench; the movable frames 4 are all rotatably connected with screw rods 15; the movable frame 4 is fixedly installed with motor 16; motor 16 is connected to screw rod 15; screw rod 15 is threadedly connected with movable plates 7; the movable plate 7 is symmetrically fixedly installed with screw seats 8; screw seats 8 are rotatably connected with screw rods 2 9 and screw rods 3 10; screw rod 2 9 is driven by motor 6; screw rods 2 9 and screw rods 3 10 are both fixedly installed with spur gears 11; the spur gears 11 are meshed with each other, so the directions of screw rods 2 9 and screw rods 3 10 are opposite;

[0024] The movable plate 7 is slidably connected with a movable block 12; the movable block 12 is fixedly installed with a driving rod; the driving rod is fixedly installed with an intermediate shaft between the screw rod 2 9 and the screw rod 3 10; the intermediate shaft is rotatably connected with the transmission rod 1 13 and the transmission rod 2 14; the driving rod is provided with limiting posts 15 on both sides of the transmission rod 13; the transmission rod 1 13 is fixedly installed with a driving block 16 between the screw rod 2 9 and the screw rod 3 10; the driving block 16 is provided with a thread groove 17 on one side close to the screw rod 2 9 and the screw rod 3 10; the thread groove 17 is adapted to the screw rod 2 9 and the screw rod 3 10; the driving block 16 is meshed with the screw rod 2 9 or the screw rod 3 10 through the thread groove 17; the transmission rod 1 13 and the transmission rod 2 14 are connected by a spring 18; the movable plate 7 is fixedly installed with two parallel guide plates 19 between the screw seats 8; the angle between the guide plate 19 and the axis of the screw rod 2 9 is less than 90 degrees; the transmission rod 2 14 is fixedly installed with a guide post 20 between the guide plates 19;

[0025] When the motor 6 drives the screw rod 2 9 to rotate, the screw rod 3 10 also rotates, and the rotation direction is opposite to that of the screw rod 2 9; the screw rod 2 9 or the screw rod 3 10 moves with the driving block 16 through the thread groove 17, and the driving block 16 drives the transmission rod 1 13, the transmission rod 2 14, the driving rod and the movable block 12 to move; until the guide column 20 of the transmission rod 2 14 contacts the guide plate 19, at this time the guide column 20 moves along the guide plate 19, so that the transmission rod 2 14 swings, when the transmission rod 2 14 pulls the transmission rod 1 13 to swing through the spring 18, so that the transmission rod 1 13 and the driving block 16 deflect to the other side and mesh with the other screw, because the screw rod 2 9 and the screw rod 3 10 rotate in opposite directions, the movable block 12 moves in the opposite direction;

[0026] The movable block 12 is fixedly mounted with a second motor 21; the second motor 21 is fixedly mounted with a first detection seat 22 and a second detection seat 23; the first detection seat 22 is fixedly mounted with an ultrasonic probe 24; the second detection seat 23 is fixedly mounted with a marker pen 38; the movable block 12 is mounted with a pressing block 25;

[0027] During use, the circuit board is transported by the conveyor belt 1; the pressing frame is driven to move downward to press the circuit board to prevent the circuit board from being sucked away, and then the exhaust fan is started, and the exhaust fan exhausts the circuit board through the exhaust pipe 2, thereby giving suction to the carbon ink layer; at the same time, the motor 6 drives the screw 5 to rotate, so that the movable plate 7 moves downward along the movable frame 4, so that the ultrasonic probe 24 on the movable plate 7 approaches the circuit board that has been exhausted; then the motor 6 is started, so that the screw 2 9 and the screw 3 10 drive the driving block 16 to move back and forth, thereby driving the transmission rod 1 13, the transmission rod 2 14, the driving rod and the movable block 12 to move, so that the ultrasonic probe 24 on the movable plate 7 is close to the circuit board that has been exhausted. The ultrasonic probe 24 moves back and forth in a straight line direction to detect the carbon ink layer of the circuit board. Since the exhaust fan is working at this time, the conveyor belt 1 is stopped, and the movable frame 4 needs to be driven by the electric push rod 3 to move so that the ultrasonic probe 24 can completely detect the circuit board; the carbon ink layer with qualified adhesion will not be separated from the circuit board, and the carbon ink layer with unqualified adhesion will be separated from the circuit board; when unqualified products are detected, the movable plate 7 is driven to move downward so that the clamping block 25 is against the circuit board; then the motor 21 drives the detection seat 1 22 and the detection seat 2 23 to rotate, so that the marker pen 38 contacts the circuit board and leaves a mark, indicating that there is a problem with the circuit board and the location of the problem.

[0028] In some embodiments, the workbench is symmetrically fixedly installed with two lifting seats 26; the lifting seats 26 are rotatably connected with screw rods 27; the screw rods 27 are fixedly installed with sprockets 28; the sprockets 28 are connected by chains; one screw rod 27 is driven by motor 3; the screw rods 27 are threadedly connected with lifting columns 29; the lifting columns 29 are fixedly installed with mounting plates 30; the mounting plates 30 are fixedly installed with exhaust pipes 2; the lifting columns 29 are fixedly installed with pressing frames; the pressing frames include fixed frames 32, pressing blocks 1 33 and pressing blocks 2 34; the pressing frames are rotatably connected with screw rods 5 35; the screw rods 5 35 are threadedly connected with Pressing block 1 33; pressing block 1 33 is slidably connected with an optical axis 36; the optical axis 36 and pressing block 2 34 are connected to the fixed frame 32; due to the inconsistency in length and width of different circuit boards, by rotating screw rod 5 35, screw rod 5 35 drives pressing block 1 33 to move along the optical axis 36, thereby adjusting the distance between pressing block 1 33 and pressing block 2 34; screw rod 4 27 is driven to rotate by motor 3, and screw rod 4 27 drives lifting column 29, mounting plate 30, exhaust pipe 2 and fixed frame 32 to move, so that exhaust pipe 2 approaches circuit board, and pressing block 1 33 and pressing block 2 34 press both sides of the circuit board.

[0029] In some embodiments, the conveying mechanism includes a motor 4 37, a rotating shaft and a support roller; the workbench is symmetrically rotatably connected to the rotating shaft; the rotating shafts are fixedly installed with rollers; the rollers are connected through the conveyor belt 1; the support rollers are arranged between the conveyor belts 1; the support rollers are against the side of the conveyor belt 1 close to the ultrasonic probe 24; the workbench is symmetrically fixedly installed with motor 4 37; the motor 4 37 is respectively connected to a rotating shaft.

[0030] In some embodiments, a pneumatic suction cup is fixedly installed on the workbench; a camera is arranged on one side of the workbench close to the pneumatic suction cup; the marking point is identified by the camera, and then the circuit board with problems is grabbed by the pneumatic suction cup.

[0031] In some embodiments, the workbench is provided with at least two storage boxes; one storage box is used to place qualified products, and the other is used to place unqualified products.

[0032] The present invention also provides a circuit board to be tested by the circuit board carbon ink layer testing device as described above, wherein the surface of the circuit board is coated with a carbon ink layer.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A circuit board carbon ink layer testing device, wherein the surface of the circuit board is coated with a carbon ink layer, characterized in that: include: A conveying mechanism, an exhaust pipe (2), a pressing frame and an ultrasonic probe (24); the conveying mechanism is installed on a workbench; the conveying mechanism is provided with a circulating conveyor belt (1); the workbench is provided with an exhaust pipe (2) and a pressing frame that move along the vertical direction; the exhaust pipe (2) is connected to the exhaust fan; the workbench is symmetrically fixed with electric push rods (3); the electric push rods (3) are fixedly installed with movable frames (4); the movable frames (4) are slidably connected to the workbench; the movable frames (4) are rotatably connected There is a screw rod (5); the movable frame (4) is fixedly mounted with a motor (6); the motor (6) is connected to the screw rod (5); the screw rod (5) is threadedly connected with a movable plate (7); the movable plate (7) is symmetrically fixedly mounted with a screw rod seat (8); the screw rod seat (8) is rotatably connected with a screw rod (9) and a screw rod (10); the screw rod (9) is driven by the motor (6); the screw rod (9) and the screw rod (10) are fixedly mounted with a spur gear (11); the spur gears (11) are meshed with each other; The movable plate (7) is slidably connected with a movable block (12); the movable block (12) is fixedly installed with a driving rod; the driving rod is fixedly installed with an intermediate shaft between the second screw rod (9) and the third screw rod (10); the intermediate shaft is rotatably connected with the first transmission rod (13) and the second transmission rod (14); the driving rod is provided with limiting columns (15) on both sides of the first transmission rod (13); the first transmission rod (13) is fixedly installed with a driving block (16) between the second screw rod (9) and the third screw rod (10); the driving block (16) is provided with a thread groove (17) on one side close to the second screw rod (9) and the third screw rod (10); the thread groove (17) is adapted to the second screw rod (9) and the third screw rod (10); the driving block (16) is connected to the second screw rod (9) and the third screw rod (10) through the thread groove (17). The screw rod 2 (9) or the screw rod 3 (10) is meshed; the transmission rod 1 (13) and the transmission rod 2 (14) are connected by a spring (18); the movable plate (7) is fixedly mounted with two parallel guide plates (19) between the screw rod seats (8); the angle between the guide plates (19) and the axis of the screw rod 2 (9) is less than 90 degrees; the transmission rod 2 (14) is fixedly mounted with a guide column (20) between the guide plates (19); the movable block (12) is fixedly mounted with a motor 2 (21); the motor 2 (21) is fixedly mounted with a detection seat 1 (22) and a detection seat 2 (23); the detection seat 1 (22) is fixedly mounted with an ultrasonic probe (24); the detection seat 2 (23) is fixedly mounted with a marker pen (38); the movable block (12) is mounted with a pressing block (25).

2. The circuit board carbon ink layer testing device according to claim 1, characterized in that: The workbench is symmetrically fixedly installed with two lifting seats (26); the lifting seats (26) are rotatably connected with screw rods (27); the screw rods (27) are fixedly installed with sprockets (28); the sprockets (28) are connected by chains; one of the screw rods (27) is driven by a motor (3); the screw rods (27) are threadedly connected with lifting columns (29); the lifting columns (29) are fixedly installed with mounting plates (30); the mounting plates (30) are fixedly installed The exhaust pipe (2) is provided; the lifting column (29) is fixedly mounted with the pressing frame; the pressing frame comprises a fixing frame (32), a pressing block 1 (33) and a pressing block 2 (34); the pressing frame is rotatably connected with a screw rod 5 (35); the screw rod 5 (35) is threadedly connected with the pressing block 1 (33); the pressing block 1 (33) is slidably connected with an optical axis (36); the optical axis (36) and the pressing block 2 (34) are connected to the fixing frame (32).

3. The circuit board carbon ink layer testing device according to claim 2, characterized in that: The conveying mechanism comprises a fourth motor (37), a rotating shaft and supporting rollers; the workbench is symmetrically rotatably connected to the rotating shaft; the rotating shafts are fixedly mounted with rollers; the rollers are connected via the conveyor belt (1); the supporting rollers are arranged between the conveyor belts (1); the supporting rollers abut against a side of the conveyor belt (1) close to the ultrasonic probe (24); the fourth motor (37) is symmetrically fixedly mounted on the workbench; the fourth motor (37) is respectively connected to one of the rotating shafts.

4. The circuit board carbon ink layer testing device according to claim 1, characterized in that: A pneumatic suction cup is fixedly mounted on the workbench; a camera is arranged on one side of the workbench close to the pneumatic suction cup.

5. The circuit board carbon ink layer testing device according to claim 4, characterized in that: The workbench is provided with at least two storage boxes.

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