CN111551840A

CN111551840A - PCB board on-line measuring device

Info

Publication number: CN111551840A
Application number: CN201910111876.6A
Authority: CN
Inventors: 朱奎锋
Original assignee: Tianjin Fly Tech Co ltd
Current assignee: Tianjin Fly Tech Co ltd
Priority date: 2019-02-12
Filing date: 2019-02-12
Publication date: 2020-08-18

Abstract

The invention relates to the technical field of circuit board testing equipment, in particular to an online PCB testing device which comprises a PCB body, wherein the PCB body comprises a circuit board and a virtual circuit board, a plurality of groups of detection points are regularly arranged on the virtual circuit board, a testing device is arranged outside the PCB body and comprises a jig frame, a mounting plate is arranged at the front end of the jig frame, a moving block is sleeved on the mounting plate, a probe supporting seat is arranged at the front end of the moving block, and an air cylinder is arranged at the top end of the moving block. The PCB detection method is convenient to use, simple to operate, high in safety, high in universality, capable of avoiding possible accidents caused by manual operation, capable of detecting PCBs of different models, and capable of improving detection efficiency and saving a large amount of production cost compared with a traditional detection method.

Description

PCB board on-line measuring device

Technical Field

The invention relates to the technical field of circuit board testing equipment, in particular to an online PCB testing device.

Background

The printed circuit board, also called printed circuit board, printed board for short, PCB or PWB for short, uses insulating board as base material, and is cut into a certain size, on which at least one conductive pattern is attached, and is equipped with holes (for example, element hole, fastening hole and metallized hole), and can be used for replacing chassis of electronic component and implementing interconnection of electronic component and device.

General PCB boards need to be detected after production and molding, but the existing detection method has many defects, such as: 1. the detection equipment needs to contain the same number of PIN as the detection points on the PCB (if the PIN is bad, the whole detection equipment needs to be disassembled and then replaced, the operation is not easy, the specification of the PIN is fine, the operation is not easy, a large amount of time is wasted, and the cost is increased by the same number of PIN as the PIN on the PCB); 2. when the PCB model is replaced, the whole detection equipment needs to be replaced, and a large amount of time is wasted; 3. when the operation, when the check out test set upper plate was pressed down through atmospheric pressure and is examined, because the PIN needle is tiny, easily cause the stab bad to the product. The circuit board is abandoned, and the production cost is increased; 4. single layer detection is inefficient and time consuming, resulting in increased production costs. Most of the existing detection methods rely on manual operation, the detection efficiency is low, and meanwhile, industrial accidents caused by misoperation are easy to occur. In view of this, we propose an online testing device for PCB.

Disclosure of Invention

The invention aims to provide an online testing device for a PCB (printed circuit board), which is used for solving the problem that the existing method for detecting the PCB in the background technology has more defects.

In order to achieve the purpose, the invention provides the following technical scheme:

an online PCB testing device comprises a PCB body, wherein the PCB body comprises a circuit board, the outer side of the circuit board is connected with a virtual circuit board through a plurality of connection points, a plurality of groups of detection points are regularly arranged on the virtual circuit board, a testing device is arranged outside the PCB body and comprises a jig frame, a mounting plate is arranged at the front end of the jig frame, a fixed block is arranged in the middle of the mounting plate, a sliding block is arranged in the middle of the fixed block, a moving block is sleeved on the sliding block, a sliding groove is arranged at the rear end of the moving block, a clamping groove is arranged at the front end of the moving block, a probe supporting seat is arranged at the front end of the moving block, a plurality of probes are regularly arranged on the probe supporting seat, a clamping block is arranged in the middle of the rear end of the probe supporting seat, fixing wings are arranged at the left end and, the cylinder is fixed on the jig frame through the support frame.

Preferably, the virtual circuit board is annular, the virtual circuit board and the circuit board are of an integrally formed structure, and the detection points are welded and fixed on the virtual circuit board.

Preferably, the mounting plate is fixed on the jig frame through a bolt, and the fixed block, the sliding block and the mounting plate are of an integrally formed structure.

Preferably, the moving block is in sliding clamping connection with the sliding block through a sliding groove.

Preferably, the probes penetrate through the horizontal part of the probe supporting seat, the probes are fixedly embedded on the probe supporting seat, and the number and the position distribution of the probes are the same as those of one group of the detection points.

Preferably, the fixture block, the fixed wing and the probe supporting seat are of an integrally formed structure, and the fixture block is in clamping fit with the clamping groove.

Preferably, the fixed wing is fixed to the moving block by a bolt.

Preferably, the support frame is welded and fixed on the jig frame, and the cylinder is fixed on the support frame through a bolt.

Preferably, a piston rod is arranged at the bottom end of the air cylinder, and the bottom end of the piston rod is welded and fixed on the moving block.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the PCB body with the virtual circuit board is arranged, the detection points are arranged on the virtual circuit board, the virtual circuit board can be broken off after the detection of the PCB body is finished so as to be directly used, and the cost waste caused by stabbing and abandoning of the PCB during operation can be saved;

2. according to the invention, by arranging the detachable testing device, when different types of PCBs are tested, only the probe supporting seat of the testing device needs to be replaced, and the combined PCB or single-board PCB can be simultaneously detected in multiple layers, so that the detection efficiency of the PCBs is improved, and the cost is saved.

In conclusion, the PCB detection method is convenient to use, simple to operate, high in safety, high in universality, capable of avoiding accidents possibly caused by manual operation, capable of detecting PCBs of different models, and capable of improving detection efficiency and saving a large amount of production cost compared with a traditional detection method.

Drawings

FIG. 1 is a schematic view of the overall structure of the PCB on-line testing device of the present invention;

FIG. 2 is an enlarged schematic view of the invention at A of FIG. 1;

FIG. 3 is a schematic diagram of the overall structure of the testing device of the present invention;

FIG. 4 is a schematic structural view of a jig frame according to the present invention;

FIG. 5 is a schematic structural view of a mounting plate of the present invention;

FIG. 6 is a schematic diagram of the structure of the motion block of the present invention;

FIG. 7 is a schematic structural view of the front and back of the probe holder of the present invention.

In the figure: 1. a PCB body; 10. a connection point; 11. a circuit board; 12. a virtual circuit board; 13. detecting points; 2. a testing device; 21. a jig frame; 22. mounting a plate; 221. a fixed block; 222. a slider; 23. a motion block; 231. a chute; 232. a card slot; 24. a probe supporting seat; 241. a probe; 242. a clamping block; 243. a fixed wing; 25. a cylinder; 251. a piston rod; 252. a support frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "middle", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least one, e.g., one, two, etc., unless specifically defined otherwise.

Example 1

A PCB board is shown in figures 1-2 and comprises a PCB board body 1, wherein the PCB board body 1 comprises a circuit board 11, the outer side of the circuit board 11 is connected with a virtual circuit board 12 through a plurality of connecting points 10, and a plurality of groups of detecting points 13 are regularly arranged on the virtual circuit board 12.

Specifically, the circuit board 11 may be a single board PCB or a jointed board PCB, and in this embodiment, the circuit board 11 is preferably a jointed board PCB.

In this embodiment, the virtual circuit board 12 is annular, and the virtual circuit board 12 and the circuit board 11 are integrally formed, so that the overall structure of the PCB body 1 is solid and stable.

Further, the width of the connection point 10 is preferably 0.5mm, so that the connection point 10 is thin and easy to break, and the dummy circuit board 1212 can be removed by directly breaking the connection point 10 after the test is finished.

Further, the detection point 13 is fixed on the virtual circuit board 12 by soldering, and the PCB is detected by contacting the detection probe with the detection point 13.

Example 2

In order to improve the work efficiency of testing the PCB, the present inventor provides an online PCB testing device based on embodiment 1, as shown in fig. 3-7, including a testing device 2, the testing device 2 includes a jig frame 21, a mounting plate 22 is disposed at the front end of the jig frame 21, a fixing block 221 is disposed in the middle of the mounting plate 22, a slider 222 is disposed in the middle of the fixing block 221, a moving block 23 is sleeved on the slider 222, a sliding groove 231 is disposed at the rear end of the moving block 23, a clamping groove 232 is disposed at the front end of the moving block 23, a probe supporting seat 24 is disposed at the front end of the moving block 23, a plurality of probes are disposed on the probe supporting seat 241 regularly, a clamping block 242 is disposed in the middle of the rear end of the probe supporting seat 24, fixing wings 243 are disposed at both left and right ends of the clamping block 242, an air cylinder 25 is disposed at the top end of the.

In this embodiment, the mounting plate 22 is fixed on the jig frame 21 by bolts, so that the mounting plate 22 is stably connected with the jig frame 21.

Specifically, the fixing block 221, the slider 222 and the mounting plate 22 are integrally formed, so that the mounting plate 22 is solid and stable in overall structure.

Further, the mounting plate 22 can be adjusted in position from side to side as required, and is fixed by bolts.

In this embodiment, the moving block 23 is slidably engaged with the slider 222 through the sliding slot 231.

Specifically, the width of the end of the slider 222 away from the fixed block 221 is smaller than the width of the end of the slider 222 close to the fixed block 221, so that the sliding groove 231 and the slider 222 are clamped more firmly, and the moving block 23 is prevented from slipping out.

In this embodiment, the probes 241 penetrate through the horizontal portion of the probe supporting base 24, the probes 241 are fixedly embedded on the probe supporting base 24, the number and the position distribution of the plurality of probes 241 are the same as those of one group of the detecting points 13, and the probes 241 contact the detecting points 13 to detect the PCB body 1.

In addition, the testing device 2 should be provided with a plurality of probe supporting seats 24 of different types, and the number and the position distribution of the probes 241 thereon are different, and the probes can be respectively matched with the detecting points 13 of different types so as to detect the PCB body 1.

In this embodiment, the fixture block 242, the fixing wing 243 and the probe supporting seat 24 are integrally formed, so that the overall structure of the probe supporting seat 24 is firm and stable.

Further, the latch 242 is snap-fitted to the latch 232, the fixing wing 243 is fixed to the moving block 23 by a bolt, the probe supporting seat 24 can be fixed to the moving block 23 by the bolt and the fixing wing 243, and the probe supporting seat 24 of different types can be replaced by detaching the bolt.

In this embodiment, the supporting frame 252 is welded and fixed on the jig frame 21, and the air cylinder 25 is fixed on the supporting frame 252 by bolts, so that the structure of the air cylinder 25 is firm.

Further, a piston rod 251 is disposed at the bottom end of the cylinder 25, the bottom end of the piston rod 251 is welded and fixed on the moving block 23, and when the cylinder 25 is started, the piston rod 251 pushes the moving block 23 and moves the probe supporting seat 24 up and down, so that the probe 241 contacts the detecting point 13 on the PCB body 1.

Specifically, the cylinder 25 in the present embodiment is a small aluminum alloy cylinder manufactured and provided by marathon pneumatic components factory, le qing, with model number MAL16-250, and its matching pneumatic system and accessories are also provided by the manufacturer. Moreover, the cylinder 25 referred to in the present embodiment is prior art and can be fully implemented by those skilled in the art, and it goes without saying that the protection of the present invention does not relate to the improvement of the structure and the operating principle of the cylinder 25.

In addition, in this embodiment, still should be equipped with full-automatic arm on testing arrangement 2, be convenient for snatch PCB board body 1 voluntarily and carry out automatic positioning, make testing arrangement 2 can detect a large amount of PCB board bodies 1 fast.

Further, the mechanical arm involved in this embodiment is a mechanical arm manufactured and provided by shenzhen zhen limited science and technology, and the model is LOBOT, and the power supply and the accessories matched with the mechanical arm are also provided by the manufacturer. Furthermore, the robot arm referred to in this embodiment is prior art and can be fully implemented by those skilled in the art, and it goes without saying that the protection of the present invention does not relate to the improvement of the structure and working principle of the robot arm.

When the PCB online testing device is used, firstly, a plurality of PCB bodies 1 are vertically arranged in sequence, the air cylinder 25 is started to enable the PCB bodies to work, the mechanical arm is started to grab and position the PCB bodies 1, then the probe supporting seat 24 vertically moves up and down under the action of the air cylinder 25 to realize the test of the probe and the detection hole, after the detection is finished, the detected PCB bodies 1 are moved out while the probe supporting seat 24 is reset, meanwhile, the next PCB to be detected is positioned, the detection efficiency of the PCB is effectively improved, and after the detected qualified PCB bodies 1 are moved out, the connecting points 10 are broken off to remove the virtual circuit board 12, so that the PCB online testing device can be normally used; when the PCB body 1 of different types needs to be detected, the corresponding probe supporting seat 24 is replaced first, and then the above process is repeated.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a PCB board on-line testing device, includes PCB board body (1), its characterized in that: the PCB board body (1) comprises a circuit board (11), the outer side of the circuit board (11) is connected with a virtual circuit board (12) through a plurality of connecting points (10), the virtual circuit board (12) is regularly provided with a plurality of groups of detecting points (13), a testing device (2) is arranged outside the PCB board body (1), the testing device (2) comprises a jig frame (21), the front end of the jig frame (21) is provided with a mounting plate (22), the middle of the mounting plate (22) is provided with a fixing block (221), the middle of the fixing block (221) is provided with a sliding block (222), the sliding block (222) is sleeved with a moving block (23), the rear end of the moving block (23) is provided with a sliding groove (231), the front end of the moving block (23) is provided with a clamping groove (232), the front end of the moving block (23) is provided with a probe supporting seat (24), the probe supporting seat (24) is regularly provided with, a clamping block (242) is arranged in the middle of the rear end of the probe supporting seat (24), fixing wings (243) are arranged at the left end and the right end of the clamping block (242), an air cylinder (25) is arranged at the top end of the moving block (23), and the air cylinder (25) is fixed on the jig frame (21) through a supporting frame (252).

2. The PCB board on-line testing device of claim 1, wherein: the virtual circuit board (12) is annular, the virtual circuit board (12) and the circuit board (11) are of an integrally formed structure, and the detection point (13) is welded and fixed on the virtual circuit board (12).

3. The PCB board on-line testing device of claim 1, wherein: the mounting plate (22) is fixed on the jig frame (21) through bolts, and the fixing block (221), the sliding block (222) and the mounting plate (22) are of an integrally formed structure.

4. The PCB board on-line testing device of claim 1, wherein: the moving block (23) is in sliding clamping connection with the sliding block (222) through a sliding groove (231).

5. The PCB board on-line testing device of claim 1, wherein: the probes (241) penetrate through the horizontal part of the probe supporting seat (24), the probes (241) are fixedly embedded on the probe supporting seat (24), and the number and the position distribution of the plurality of probes (241) are the same as those of one group of the detection points (13).

6. The PCB board on-line testing device of claim 1, wherein: the fixture block (242), the fixing wing (243) and the probe supporting seat (24) are of an integrally formed structure, and the fixture block (242) is in clamping fit with the clamping groove (232).

7. The PCB board on-line testing device of claim 1, wherein: the fixed wing (243) is fixed on the moving block (23) through a bolt.

8. The PCB board on-line testing device of claim 1, wherein: the supporting frame (252) is welded and fixed on the jig frame (21), and the air cylinder (25) is fixed on the supporting frame (252) through bolts.

9. The PCB board on-line testing device of claim 1, wherein: the bottom end of the air cylinder (25) is provided with a piston rod (251), and the bottom end of the piston rod (251) is welded and fixed on the moving block (23).