PCB detection device

Abstract

The utility model provides a PCB (printed circuit board) detection device, which comprises a rack, a rotating device connected to the top surface of the rack, a test fixture connected to the top surface of the rotating device, a test needle bed arranged on the upper side of the test fixture, a lifting driving mechanism connected to the top surface of the test needle bed in a driving manner, and the lifting driving mechanism connected to the top surface of the rack through a support. And the test fixture and the test needle bed are correspondingly arranged. The testing clamps are arranged around the rotating device in an array mode. According to the utility model, a plurality of PCBs can be detected at the same time, automatic detection of the PCBs is realized, the detection efficiency is improved, and the labor cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to PCB board detection technical field, concretely relates to a PCB board detection device. BACKGROUND

[0002] PCB board is also called as printed circuit board, is the carrier of electrical connection of electronic components, and various electronic components are installed on the PCB board, and the electronic components are connected through various circuit lines. In order to detect the mounting quality of various electronic components, whether the pin is welded well, whether the installation is correct, the PCB board needs to be detected. The commonly used PCB board detection method includes ICT online detection, flying probe detection, etc., and the existing ICT detection usually needs to design a special test fixture, connects the test point on the PCB board, inputs analog electric signal to the circuit board, then detects the function of the inspection component, and finds the fault in time. The existing ICT detection device can only detect single, and the detection efficiency is low, and the detection labor cost is high.

[0003] Therefore, the above problems are urgent to be solved. UTILITY MODEL CONTENT

[0004] The utility model discloses a PCB board detection device, can automatically detect the PCB board, and a time clamping can detect multiple PCB boards simultaneously, and the detection efficiency is high, reduces the artificial cost, can display the unqualified product in real time, requires low to detection personnel, reduces personnel training cost.

[0005] Technical scheme: in order to realize the above object, the utility model provides a PCB board detection device, including frame, the top surface of frame is connected with rotating device, the top surface of rotating device is connected with test fixture, and the upper side of test fixture is equipped with test needle bed, and the top surface drive connection of test needle bed has lifting drive mechanism, and lifting drive mechanism is connected to the top surface of frame through support. Test fixture and test needle bed are correspondingly arranged. Test fixture is arranged around rotating device. When detecting the PCB board, the PCB board is placed in test fixture in proper order, and test fixture is positioned to the PCB board, and lifting drive mechanism is started, and lifting drive mechanism drives test needle bed to move down, and the test probe of test needle bed is abutted on the test point on the PCB board, and the electrical parameter between each test point is measured through test needle bed, and the parameter of test and design value are compared, and whether the circuit board exists the fault is judged, and the test personnel is reminded. The utility model can detect multiple PCB boards simultaneously, realizes automatic detection to the PCB board, improves the detection efficiency, and reduces the artificial cost. The PCB board mentioned above and subsequently refers to printed circuit board.

[0006] Further, the PCB detection device, the rotating device includes a circular plate and a rotating motor, the rotating motor and the circular plate are drivingly connected, and the rotating motor drives the circular plate to rotate. During placing the PCB, the rotating motor drives the circular plate to rotate, and the test fixture without the PCB is rotated to the side close to the tester, so that the tester can place the PCB to be tested, and the labor intensity of the tester is reduced. After the detection of the PCB is completed, the rotating motor drives the circular plate to rotate, and the test fixture with the PCB is rotated to the side close to the tester in sequence, so that the tester can take away the PCB, the labor intensity of the tester is reduced, and the convenience of testing is improved.

[0007] Further, the PCB detection device, the test fixture includes a base connected to the top surface of the circular plate, the base is provided with a through groove, the through groove penetrates the base and the circular plate, a support step is arranged at the upper opening of the through groove, and the support step supports the workpiece to be tested. During testing, the PCB is placed on the support step, the support step supports the PCB, the side wall of the support step limits the PCB, the displacement of the PCB during testing is avoided, the testing probe can accurately contact the test point, and the testing stability and accuracy are improved.

[0008] Further, the PCB detection device, the through groove is connected with a positioning needle, the positioning needle is arranged at opposite angles of the through groove, the positioning needle includes a fixed positioning needle and an adjustable positioning needle, the fixed positioning needle is arranged on the boss arranged on the inner wall of the through groove, and the adjustable positioning needle is connected to the through groove through a movable block. The positioning needle is arranged in the through groove, the PCB is fixed on the support step through the positioning needle, the positioning accuracy of the PCB is improved, and the stability and accuracy of the detection are improved. Different movable blocks are replaced to adjust the positioning position of the adjustable positioning needle, different PCB detection requirements are adapted, and the adaptability of the device is improved.

[0009] Further, the PCB detection device, the base top surface is connected with an auxiliary positioning block, the auxiliary positioning block is arranged at the upper opening of the through groove, and the auxiliary positioning block is provided with one or more than one. The auxiliary positioning block arranged at the upper opening of the through groove can provide preliminary positioning for the tester to place the PCB, the tester can place the PCB on the support step, the detection convenience is improved, and the testing efficiency is improved.

[0010] Further, the PCB detection device, the top surface of the rack is connected with a workbench, and the rotating device and the support are connected to the top surface of the workbench. The workbench is square, the support is arranged along three edges of the workbench, and the side of the workbench without the support extends out of the rack to form a material placing table. The tester can temporarily place materials on the material placing table, the number of times of turning around or bending of the tester is reduced, the tester is facilitated to place materials, and the testing efficiency is improved.

[0011] Further, the PCB detection device has the driving cylinder arranged at the lower side of the workbench, the driving cylinder is connected with the frame, the driving cylinder is vertically arranged upwards, the cylinder shaft of the driving cylinder is connected with the negative probe, the negative probe penetrates through the workbench and extends into the through groove.

[0012] Further, the PCB detection device has the lifting driving mechanism including the cylinder, the cylinder is vertically arranged downwards, the cylinder shaft of the cylinder is connected with the connecting plate, and the connecting plate is connected with the test needle bed.

[0013] Further, the PCB detection device has the test needle bed including the top plate, the top plate is connected with the connecting plate, the lower side of the top plate is connected with the needle plate through the supporting plate, and the needle plate is connected with the probe.

[0014] Further, the PCB detection device has the top plate connected with the display device, and the display screen of the display device is arranged close to the rotation center of the rotating device.

[0015] The technical scheme can have the following beneficial effects: the PCB detection device can simultaneously detect multiple PCBs, realize automatic detection of the PCBs, improve detection efficiency and reduce labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1The utility model discloses a PCB detection device's structure schematic view.

[0017] Figure 2 It is partial close -up drawing of the test fixture.

[0018] Figure 3 The utility model discloses a PCB detection device's plan view.

[0019] Figure 4 It is front view of the drive cylinder and negative probe.

[0020] Figure 5 It is Figure 1 partial close -up drawing.

[0021] In the drawing: 1, frame, 2, rotating device, 21, round plate, 22, rotating motor, 3, test fixture, 31, base, 32, through groove, 321, fixed positioning needle, 322, adjustable positioning needle, 323, movable block, 33, support step, 34, auxiliary positioning block, 4, test needle bed, 41, top plate, 42, support plate, 43, needle plate, 44, probe, 45, display device, 461, circular guide pillar, 462, oval guide pillar, 5, lifting drive mechanism, 51, cylinder, 52, connecting plate, 6, support, 7, workbench, 71, material placing table, 72, drive cylinder, 73, negative probe. DETAILED DESCRIPTION

[0022] Example 1

[0023] As Figure 1 shown in a kind of PCB detection device, including frame 1, frame 1 top surface is connected with rotating device 2, rotating device 2 top surface is connected with test fixture 3, test fixture 3 upper side is equipped with test needle bed 4, test needle bed 4 top surface is driven connection with lifting drive mechanism 5, lifting drive mechanism 5 is connected to frame 1 top surface by support 6.Test fixture 3 and test needle bed 4 are correspondingly set up.Test fixture 3 is arranged around rotating device 2.Rotating device 2 includes round plate 21 and rotating motor 22, rotating motor 22 and round plate 21 drive connection, rotating motor 22 drives round plate 21 rotation.

[0024] As Figure 2The PCB board testing device shown includes a test fixture 3 comprising a base 31 connected to the top surface of a circular plate 21. The base 31 has a through groove 32 that passes through both the base 31 and the circular plate 21. A support step 33 is provided along the upper opening of the through groove 32, supporting the workpiece to be tested. Positioning pins are connected to the inner wall of the through groove 32, positioned diagonally. Each positioning pin includes a fixed positioning pin 321 and an adjustable positioning pin 322. The fixed positioning pin 321 passes through a boss on the inner wall of the through groove 32, and the adjustable positioning pin 322 is connected to the through groove 32 via a movable block 323. An auxiliary positioning block 34 is connected to the top surface of the base 31, positioned along the upper opening of the through groove 32. One or more auxiliary positioning blocks 34 are provided.

[0025] like Figure 3 The PCB board inspection device shown has a worktable 7 connected to the top surface of the frame 1, and a rotating device 2 and a support 6 connected to the top surface of the worktable 7. The worktable 7 is square, and the support 6 is set along three sides of the worktable 7. The side of the worktable 7 not connected to the support 6 extends out of the frame 1 to form a material placement platform 71.

[0026] like Figure 4 The PCB board inspection device shown has a drive cylinder 72 on the lower side of the workbench 7. The drive cylinder 72 is connected to the frame 1 and is set vertically upward. The cylinder shaft of the drive cylinder 72 is connected to a negative probe 73. The negative probe 73 passes through the workbench 7 and extends into the through groove 32.

[0027] like Figure 5 The PCB board inspection device shown includes a lifting drive mechanism 5 comprising a cylinder 51, which is vertically downward. A connecting plate 52 is connected to the cylinder shaft of the cylinder 51, and the connecting plate 52 is connected to the test probe bed 4. The test probe bed 4 includes a top plate 41, which is connected to the connecting plate 52. A needle plate 43 is connected to the lower side of the top plate 41 via a support plate 42, and probes 44 are connected to the needle plate 43. Guide posts are connected to the needle plate 43 at opposite corners, including circular guide posts 461 and elliptical guide posts 462. The base 31 has through holes for the circular guide posts 461 and elliptical guide posts 462 to pass through. A display device 45 is connected to the top plate 41, and the display screen of the display device 45 is positioned near the rotation center of the rotating device 2.

[0028] The tester places the PCB to be tested on the placing table 71, and places the PCB against the auxiliary positioning block 34, then fixes the positioning needle 321 and the adjustable positioning needle 322 to penetrate the PCB, and places the PCB on the support step 33. Then the rotating motor 22 drives the rotating of the circular plate 21, and rotates the test fixture 3 without the PCB to the side close to the tester, and the tester repeats the above steps to place the PCB to be tested, until the test fixture 3 under the test needle bed 4 is placed with the PCB. Then the lifting driving mechanism 5 is started, the cylinder 51 drives the test needle bed 4 to move downward, the probe 44 provided on the test needle bed 4 abuts against the test point on the PCB, the driving cylinder 72 drives the negative probe 73 to rise, the negative probe 73 contacts the PCB, the probe 44 forms an electric circuit through the PCB and the negative probe 73, the test device measures the electrical parameters between each test point contacted by the probe 44, and compares the measured parameters with the design value, if the measured data does not exceed the design value, the PCB is qualified, the display device 45 displays qualified, otherwise, the display device 45 displays unqualified, and an alarm is sent to remind the tester. After the test is completed, the rotating motor 22 drives the rotating of the circular plate 21, and rotates the test fixture 3 with the PCB to the side close to the tester, and the tester takes away the PCB, and the test is completed.

[0029] The above examples are exemplary, and the purpose is to illustrate the technical concept and characteristics of the utility model, so that those skilled in the art can understand the content of the utility model and implement it, and the protection scope of the utility model cannot be limited thereby. Any equivalent change or modification according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A PCB board inspection device, characterized in that: The device includes a frame (1), a rotating device (2) connected to the top surface of the frame (1), a test fixture (3) connected to the top surface of the rotating device (2), a test needle bed (4) provided on the upper side of the test fixture (3), a lifting drive mechanism (5) driven to the top surface of the test needle bed (4), and the lifting drive mechanism (5) connected to the top surface of the frame (1) through a bracket (6); the test fixture (3) and the test needle bed (4) are arranged correspondingly; the test fixture (3) is arranged in an array around the rotating device (2).

2. The PCB board testing device according to claim 1, characterized in that: The rotating device (2) includes a circular plate (21) and a rotary motor (22), which are connected in a driving manner, and the rotary motor (22) drives the circular plate (21) to rotate.

3. The PCB board inspection device according to claim 2, characterized in that: The test fixture (3) includes a base (31) connected to the top surface of the circular plate (21). The base (31) is provided with a through groove (32) that passes through both the base (31) and the circular plate (21). A support step (33) is provided along the upper opening of the through groove (32) to support the workpiece to be tested.

4. The PCB board inspection device according to claim 3, characterized in that: The inner wall of the through groove (32) is connected to a positioning pin. The positioning pin is located diagonally in the through groove (32). The positioning pin includes a fixed positioning pin (321) and an adjustable positioning pin (322). The fixed positioning pin (321) passes through a boss provided on the inner wall of the through groove (32). The adjustable positioning pin (322) is connected to the through groove (32) through a movable block (323).

5. The PCB board inspection device according to claim 3, characterized in that: The base (31) is connected to an auxiliary positioning block (34) on its top surface. The auxiliary positioning block (34) is set along the upper opening of the through groove (32). There is one or more auxiliary positioning blocks (34).

6. The PCB board inspection device according to claim 4, characterized in that: The top surface of the frame (1) is connected to a workbench (7), and the rotating device (2) and the support (6) are connected to the top surface of the workbench (7). The workbench (7) is square, and the support (6) is set along three sides of the workbench (7). The side of the workbench (7) not connected to the support (6) extends out of the frame (1) to form a material placement platform (71).

7. The PCB board inspection device according to claim 6, characterized in that: The workbench (7) is provided with a drive cylinder (72) on the lower side. The drive cylinder (72) is connected to the frame (1). The drive cylinder (72) is set vertically upward. The cylinder shaft of the drive cylinder (72) is connected to a negative electrode probe (73). The negative electrode probe (73) passes through the workbench (7) and extends into the through groove (32).

8. The PCB board testing device according to claim 3, characterized in that: The lifting drive mechanism (5) includes a cylinder (51), which is set vertically downward. The cylinder shaft of the cylinder (51) is connected to a connecting plate (52), and the connecting plate (52) is connected to the test needle bed (4).

9. The PCB board testing device according to claim 8, characterized in that: The test needle bed (4) includes a top plate (41), which is connected to a connecting plate (52). A needle plate (43) is connected to the lower side of the top plate (41) via a support plate (42). A probe (44) is connected to the needle plate (43). A guide post is connected to the needle plate (43) at a diagonal angle. The guide post includes a circular guide post (461) and an elliptical guide post (462). The base (31) has through holes for the circular guide post (461) and the elliptical guide post (462) to pass through.

10. The PCB board inspection device according to claim 9, characterized in that: The top plate (41) is connected to a display device (45), and the display screen of the display device (45) is set close to the rotation center of the rotating device (2).

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