CN116840156A

CN116840156A - Detection device for cutting edge of PCB

Info

Publication number: CN116840156A
Application number: CN202310818043.XA
Authority: CN
Inventors: 沈志刚; 沈国良
Original assignee: Yuekaite Science & Technology Tongling Co ltd
Current assignee: Yuekaite Science & Technology Tongling Co ltd
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2023-10-03

Abstract

The invention discloses a detection device for a cutting edge of a PCB (printed Circuit Board), which relates to the field of detection equipment and comprises a feeding table and a detection table, wherein the feeding table comprises a first workbench, two bearing seats are fixedly arranged at the top end of the first workbench and close to one side, a feeding plate is rotatably arranged between the two bearing seats, a first positive and negative motor is rotatably arranged at one side of the feeding plate, one side of the first positive and negative motor is fixedly arranged at one side of one of the bearing seats, a fixed table is fixedly arranged at the top end of the first workbench and close to two sides of the feeding plate, and a first sliding groove is formed in the top ends of the two fixed tables. According to the invention, the PCB entering the feeding plate is clamped and centered through the two positioning plates, and then the PCB is placed on the light source plate through the overturning of the feeding plate, so that the centering in the feeding process is realized, the probability of misjudgment of the detector is reduced, the detection accuracy is improved, and the detection efficiency is improved.

Description

Detection device for cutting edge of PCB

Technical Field

The invention relates to the technical field of detection equipment, in particular to a detection device for a cutting edge of a PCB.

Background

The PCB is a printed circuit board, which mainly appears in each electronic device, electronic parts are arranged in different devices, almost all of the electronic parts are embedded on PCBs with different sizes, along with rapid development of the age, the PCB is widely applied to various fields, and the existing PCB needs to be cut in the production and processing process, so that the cut PCB can meet the production requirements.

In the prior art, for example, the Chinese patent number is: the detection device of the cutting edge of the PCB comprises a bracket, a camera module, a projection module and a control module, wherein the camera module and the projection module are movably arranged on the bracket, and are connected with the control module and controlled by the control module; the projection module comprises a light source component and a suction component for sucking the PCB, wherein the suction component is connected with the light source component, and the suction component and the PCB are contacted with the light source component in the use state of the device.

But among the prior art, this detection device is before detecting, needs to fix the PCB circuit board on the light source board through the cooperation of sucking disc and suction bar, because the PCB board is placed on the light source board after, does not carry out centering location for when the PCB board skew is too big, its detection edge exceeds the detection area of industry camera, leads to the PCB board to detect the misjudgement easily, causes economic loss.

Disclosure of Invention

The invention aims to provide a detection device for a cutting edge of a PCB (printed Circuit Board), which aims to solve the problems that the PCB is easy to detect and misjudge and economic loss are caused by the fact that the detection device provided by the background technology needs to fix the PCB on a light source plate through the matching of a sucker and a sucker rod before detection, and the PCB is not centered and positioned after being placed on the light source plate, so that the detection edge of the PCB exceeds a detection area of an industrial camera when the PCB is excessively offset.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a PCB circuit board cutting edge's detection device, includes material loading platform and detection platform, the material loading platform includes a workstation, a workstation top just is close to one side position department fixed mounting and has two bearing frames, two rotate between the bearing frame and install the material loading board, material loading board one side rotates and installs a positive and negative motor, a positive and negative motor one side with one of them bearing frame one side fixed mounting, a workstation top just is close to material loading board both sides position department fixed mounting has the fixed station, two the spout has all been seted up on the fixed station top, two a equal slidable mounting in spout has a slider, two a slider top equal fixed mounting has the locating plate, two the locating plate top all rotates and installs three rubber gyro wheels, two equal fixed mounting in fixed station both sides has the microcylinder, two microcylinder opposite side respectively with locating plate internally mounted, the detection platform is located material loading platform one side, it has the fixed station to detect the workstation top, no. two the workstation top has a spout, no. two inside equal slidable mounting has a slider, two slider top fixed mounting has a locating plate, no. two workstation top and two fixed mounting has a backup pad.

Preferably, square through holes are formed in one side of the supporting plate in a penetrating mode, a screw is installed on one side of the square through holes in a rotating mode, one end of the screw penetrates through the inner side wall of the square through holes to one side of the supporting plate, a second positive and negative motor is installed on one end of the screw in a rotating mode, one side of the second positive and negative motor is fixedly installed on one side of the supporting plate, a moving block is arranged on the outer surface of the screw in a threaded mode, the top end and the bottom end of the moving block are fixedly installed on one side of the moving block in a sliding mode, two adjusting rods are fixedly installed on one side of the connecting plate, two installing blocks are installed in the inner portion of the adjusting rods in a sliding mode, an installing plate is fixedly installed on one side of the installing blocks, an absorbing frame is fixedly installed on the bottom end of the installing blocks, and an adjusting cylinder is fixedly installed on one side of the adjusting cylinder and one side of the connecting plate.

Preferably, two connecting columns are fixedly arranged at the bottom end of the second workbench, two fixing bottom plates are fixedly arranged at the bottom ends of the two connecting columns, supporting air cylinders are fixedly arranged at the top ends of the fixing bottom plates and close to four corners, eight supporting air cylinders penetrate through the bottom end of the second workbench, and two placing plates are fixedly arranged at the top ends of the supporting air cylinders respectively.

Preferably, the detector is fixedly arranged at the bottom end of the fixing frame, two first adsorption discs are fixedly communicated with the top surface of the feeding plate, four second adsorption discs are fixedly communicated with the top end of the light source plate, and four third adsorption discs are fixedly arranged in the adsorption frame.

Preferably, a triangular plate is fixedly arranged on one side of the mounting block and close to the edge positions of the two sides, and the bottom ends of the two triangular plates are fixedly arranged on the top ends of the mounting plates.

Preferably, a buffer rubber pad is fixedly arranged on one side of the feeding plate, a first limiting groove is formed in two side walls of the inside of the first sliding groove, a first limiting rod is fixedly connected to two side walls of the first sliding block, and the outer surfaces of the first limiting rods are respectively and slidably arranged on the inner surfaces of the first limiting grooves.

Preferably, the air pump is fixedly installed on the top end of the mounting plate and between the two triangular plates, the two inner side walls of the adjusting rods are provided with two sliding grooves, two sliding blocks are fixedly connected to two sides of the mounting block, and the inner surfaces of the two sliding grooves are respectively and slidably installed on the outer surfaces of the two sliding blocks.

Preferably, the top end of the second workbench is fixedly provided with two control boards at positions on two sides of the light source board, one side of each control board is provided with a through hole in a penetrating mode, the inner surfaces of the two through holes are fixedly provided with infrared detectors, and eight supporting cylinders are in telecommunication connection with the two infrared detectors respectively.

Preferably, the square through hole is inside top surface and bottom surface all have seted up No. two spacing grooves, the equal fixedly connected with of movable block upper end and bottom No. two gag lever posts, two No. two spacing groove internal surfaces respectively with two No. two gag lever post surface slidable mounting.

Preferably, the size of the inside of the first limiting groove is the same as the size of the first limiting rod, and the size of the inside of the first sliding groove is the same as the size of the first sliding block.

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

1. according to the invention, the PCB entering the feeding plate is clamped and centered through the two positioning plates, and then the PCB is placed on the light source plate through the overturning of the feeding plate, so that the centering in the feeding process is realized, the probability of misjudgment of the detector is reduced, the detection accuracy is improved, and the detection efficiency is improved.

2. According to the invention, the screw is driven to rotate by the positive and negative motor II, so that the moving block slides in the square through hole, the adsorption frame is driven to move in the sliding process of the moving block, the adjusting cylinder pushes the mounting block to descend in the two adjusting rods after moving to the position right above the light source plate, the adsorption frame is contacted with the surface of the detected PCB and is adsorbed, after adsorption is finished, the adsorption frame is sent to different placing plates according to the detection result of the detector to carry out classification placement of qualified products and unqualified products, and sorting is carried out while material is taken, so that the sorting efficiency is improved.

3. According to the invention, the infrared detector arranged in the control panel is blocked, so that the shrinkage of the four supporting cylinders on the corresponding fixed bottom plate is controlled, the placing plate is moved downwards until the infrared detector is not blocked, the placing capacity of the placing plate is realized, the distance of the adsorbing plate during placing can be kept fixed, the collapse phenomenon is prevented, and the safety is improved.

Drawings

Fig. 1 is a schematic perspective view of a cutting edge of a PCB according to the present invention;

fig. 2 is a schematic diagram showing the disassembly of a part of the structure of a feeding table at the cutting edge of a PCB according to the present invention;

fig. 3 is a schematic perspective view of a inspecting stand for cutting edges of a PCB according to the present invention;

fig. 4 is a schematic structural view of a feeding table for cutting edges of a PCB according to the present invention;

fig. 5 is a schematic structural view of a connection board and an adsorption frame at a cutting edge of a PCB circuit board according to the present invention;

fig. 6 is a schematic diagram showing the disassembly of the internal structures of the connecting plate and the adsorption frame at the cutting edge of the PCB circuit board according to the present invention;

fig. 7 is a schematic structural diagram of a portion of a test stand for cutting edges of a PCB according to the present invention.

In the figure: 1. a feeding table; 2. a first workbench; 3. a bearing seat; 4. a loading plate; 5. a first positive and negative motor; 6. a fixed table; 7. a first chute; 8. a first sliding block; 9. a positioning plate; 10. rubber rollers; 11. a micro cylinder; 12. a first adsorption plate; 13. a buffer rubber pad; 14. a first limit groove; 15. a first limit rod; 16. a detection table; 17. a support plate; 18. square through holes; 19. a screw; 20. a moving block; 21. a connecting plate; 22. an adjusting rod; 23. a mounting block; 24. adjusting a cylinder; 25. a mounting plate; 26. an adsorption frame; 27. a triangle; 28. an air pump; 29. a fixing frame; 30. a detector; 31. a light source board; 32. a control board; 33. mounting through holes; 34. an infrared detector; 35. a support cylinder; 36. placing a plate; 37. a connecting column; 38. and fixing the bottom plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1-4: the utility model provides a PCB circuit board cutting edge's detection device, including loading table 1 and detection platform 16, loading table 1 includes workstation 2, workstation 2 top just is close to one side position department fixed mounting has two bearing frames 3, install loading plate 4 between two bearing frames 3 rotation, loading plate 4 one side rotation is installed a positive and negative motor 5, positive and negative motor 5 one side and one of them bearing frame 3 side fixed mounting, workstation 2 top just is close to loading plate 4 both sides position department fixed mounting has fixed station 6, a spout 7 has all been seted up on two fixed station 6 tops, slider 8 has been installed to slider 8 in the inside of two spouts 7, locating plate 9 has been installed to slider 8 top all fixed mounting, three rubber gyro wheel 10 has been installed in the rotation of two locating plate 9 tops, miniature cylinder 11 has been installed to two fixed station 6 both sides all fixed mounting, the opposite side of two microcylinders 11 respectively with locating plate 9 inside fixed mounting, the detection platform 16 is located material loading platform 1 one side, the detection platform 16 includes No. two work tables, no. two work table tops just are located central point department fixed mounting and have light source board 31, no. two work table tops fixed mounting has backup pad 17, backup pad 17 one side fixed mounting has mount 29, material loading plate 4 one side fixed mounting has cushion rubber pad 13, no. one spacing groove 14 has been seted up to the inside both sides wall of two No. one spouts 7, the equal fixedly connected with of two slider 8 both sides walls limit lever 15, no. two limit lever 15 surface respectively with two spacing groove 14 internal surface slidable mounting, no. one spacing groove 14 inside size is the same with No. one spacing lever 15 size, no. one spout 7 inside size is the same with No. one slider 8 size.

In this embodiment, when carrying out the material loading, the conveyer belt is transported the PCB board to on the upper material plate 4, and enter into on the upper material plate 4 completely under the thrust of conveyer belt, afterwards, the miniature cylinder 11 of upper material plate 4 both sides promotes locating plate 9 and slides in spout 7, rubber gyro wheel 10 on the locating plate 9 extrudees and centers the PCB board, accomplish the back in the centering, two locating plates 9 resume the normal position under the pulling of two miniature cylinders 11 respectively, simultaneously take off 9 and leave the back at the locating plate, two adsorption discs 12 on the upper material plate 4 adsorb the PCB board, positive and negative motor 5 drive upper material plate 4 rotates and transport the light source board 31 through the mode of upset, because the PCB board has been fixed a position on upper material plate 4, so the PCB board also is the location completion state on light source board 31, through setting up positive and negative motor 5, can make upper material plate 4 rotate along two bearing frame 3 insidely, through setting up two miniature cylinders 11, can make two locating plates 9 carry out the normal position respectively in two spout 7 insidely, simultaneously, it is through setting up a stop lever 14 and setting up the limit lever, prevent that the position of the PCB board from falling, it is a limit plate 13 to prevent that the limit pad from leading to the damage in the process, the PCB board is through setting up the limit position limit 13, the limit pad is set up through setting up the limit position stop bar, the limit pad 13, the limit pad is can prevent the damage in the process, the PCB is through setting up the limit pad 13, and the limit pad is through setting up the limit pad 13 is the position is 13.

Example two

As shown in fig. 1-6, a square through hole 18 is formed through one side of a supporting plate 17, a screw 19 is rotatably mounted on one side of the square through hole 18, one end of the screw 19 penetrates through the inner side wall of the square through hole 18 to one side of the supporting plate 17, a second positive and negative motor is rotatably mounted on one end of the screw 19, one side of the second positive and negative motor is fixedly mounted on one side of the supporting plate 17, a moving block 20 is arranged on the outer surface of the screw 19 in a threaded manner, the top end and the bottom end of the moving block 20 are slidably mounted on the upper surface and the lower surface of the square through hole 18, a connecting plate 21 is fixedly mounted on one side of the moving block 20, two adjusting rods 22 are fixedly mounted on one side of the connecting plate 21, a mounting block 23 is slidably mounted in the two adjusting rods 22, a mounting plate 25 is fixedly mounted on one side of the mounting block 23, an adsorption frame 26 is fixedly mounted on the bottom end of the mounting plate 25, an adjusting cylinder 24 is fixedly mounted on the top end of the mounting block 23, the air cylinder 24 is fixedly mounted on one side of the adjusting air cylinder 24 and one side of the connecting plate 21, the detector 30 is fixedly mounted at the bottom end of the fixing frame 29, two first adsorption discs 12 are fixedly communicated with the top surface of the feeding plate 4, four second adsorption discs are fixedly communicated with the top end of the light source plate 31, four third adsorption discs are fixedly mounted inside the adsorption frame 26, the air pump 28 is fixedly mounted between the two triangular plates 27 on the top end of the mounting plate 25, second sliding grooves are formed in the inner side walls of the two adjusting rods 22, second sliding blocks are fixedly connected to the two sides of the mounting block 23, second limiting grooves are formed in the inner surfaces of the two second sliding grooves and are respectively slidably mounted on the outer surfaces of the two second sliding blocks, second limiting grooves are formed in the inner top surfaces and the bottom surfaces of the square through holes 18, second limiting rods are fixedly connected to the inner surfaces of the two second limiting grooves and the outer surfaces of the two second limiting rods respectively.

In this embodiment, after the detection of the detector 30 is completed, the second positive and negative motor drives the screw 19 to rotate, so that the moving block 20 slides in the square through hole 18, the adsorption frame 26 is driven to move in the sliding process of the moving block 20, after moving to a position right above the light source plate 31, the adjusting cylinder 24 pushes the mounting block 23 to descend in the two adjusting rods 22, so that the adsorption frame 26 contacts the surface of the detected PCB board and adsorbs, after the adsorption is completed, according to the detection result of the detector 30, the adsorption frame is sent to different placing plates 36 to sort and place the qualified products and the unqualified products, by arranging the second positive and negative motor and the screw 19, the moving block 20 can move left and right in the square through hole 18, by arranging the adjusting rods 22 and the adjusting cylinder 24, can make installation piece 23 slide from top to bottom in No. two spouts, the vertical adjustment of adsorption stand 26 has been realized, through setting up detector 30, can detect the edge of PCB board, through setting up mount 29, can fix detector 30, through setting up air pump 28, can make adsorption stand 26 normally adsorb, can promote the stability of installation piece 23 and mounting panel 25 through setting up set-square 27, no. two spacing grooves have all been seted up to square through-hole 18 inside top surface and bottom surface, two No. two spacing groove internal surfaces respectively with two No. two spacing rod surface smooth installations, can improve the stability of movable block 20 at the removal in-process, through setting up No. two spouts and No. two sliders, the stability of installation piece 23 can be guaranteed.

Example III

According to the fig. 2 and 7, two connecting columns 37 are fixedly installed at the bottom end of the second workbench, two fixing base plates 38 are fixedly installed at the bottom ends of the two connecting columns 37, supporting air cylinders 35 are fixedly installed at the top ends of the two fixing base plates 38 and near four corners, the top ends of eight supporting air cylinders 35 penetrate through the bottom end of the second workbench, two placing plates 36 are fixedly installed at the top ends of the eight supporting air cylinders 35 respectively, mounting through holes 33 are formed in the top ends of the second workbench and located on one side of the two control plates 32 of the control plate 32 fixedly installed at the positions of two sides of the light source plate 31 in a penetrating mode, infrared detectors 34 are fixedly installed on the inner surfaces of the two mounting through holes 33, and the eight supporting air cylinders 35 are in telecommunication connection with the two infrared detectors 34 respectively.

In this embodiment, after the adsorption frame 26 places the detected PCB board on the placement board 36, the infrared detector 34 installed in the control board 32 is blocked, so as to control the four supporting cylinders 35 on the corresponding fixing base board 38 to shrink, and the placement board 36 is moved downward until the infrared detector 34 stops after not being blocked, fixing the fixing base board 38 is achieved by setting the connecting column 37, height control of the placement board 36 is achieved by setting the supporting cylinders 35, and stability of the placement board 36 can be improved by setting the four supporting cylinders 35.

The application method and the working principle of the device are as follows: when feeding, the conveying belt conveys the PCB to the feeding plate 4 and completely enters the feeding plate 4 under the thrust of the conveying belt, then the micro air cylinders 11 at two sides of the feeding plate 4 push the positioning plates 9 to slide in the first sliding groove 7, the rubber rollers 10 on the positioning plates 9 squeeze and center the PCB, after the centering is completed, the two positioning plates 9 are respectively restored to the original positions under the pulling of the two micro air cylinders 11, simultaneously after the positioning plates are separated from 9, the PCB is adsorbed by the two first adsorption plates 12 on the feeding plate 4, the first positive and negative motor 5 drives the feeding plate 4 to rotate and conveys the PCB to the light source plate 31 in a turnover mode, the PCB is positioned on the light source plate 31, after the feeding is completed, the second adsorption plate on the light source plate 31 fixes the PCB again, the detector 30 fixed on the fixing frame 29 detects the PCB, the second positive and negative motor drives the screw 19 to rotate after the detection is finished, the moving block 20 slides in the square through hole 18, the adsorption frame 26 is driven to move in the sliding process of the moving block 20, after the moving block moves to the position right above the light source plate 31, the adjusting cylinder 24 pushes the mounting block 23 to descend in the two adjusting rods 22, the adsorption frame 26 contacts with the surface of the detected PCB and adsorbs, after the adsorption is finished, the PCB is sent to different placing plates 36 according to the detection result of the detector 30 to carry out classification placement of qualified products and unqualified products, after the detected PCB is placed on the placing plates 36, the infrared detector 34 arranged in the control plate 32 is blocked, thereby controlling the four supporting cylinders 35 on the corresponding fixing bottom plate 38 to shrink, the placing plates 36 are moved downwards, until the infrared detector 34 is stopped after it is unobstructed.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims

1. The utility model provides a PCB circuit board cutting edge's detection device, includes material loading platform (1) and detects platform (16), its characterized in that: the feeding table (1) comprises a first workbench (2), two bearing seats (3) are fixedly arranged at the top end of the first workbench (2) and near one side, a feeding plate (4) is rotatably arranged between the two bearing seats (3), a first positive and negative motor (5) is rotatably arranged at one side of the feeding plate (4), one side of the first positive and negative motor (5) is fixedly arranged at one side of one bearing seat (3), a fixed table (6) is fixedly arranged at the top end of the first workbench (2) and near the two side positions of the feeding plate (4), a first sliding groove (7) is formed at the top ends of the two fixed tables (6), the inside sliding mounting of a sliding block (8) of a chute (7), the fixed mounting of a sliding block (9) on the top of a sliding block (8), the rotating mounting of a rubber roller (10) on the top of a positioning plate (9), the fixed mounting of a micro cylinder (11) on two sides of a fixed table (6), the fixed mounting of a micro cylinder (11) on the other side of a micro cylinder (11) and the fixed mounting of a positioning plate (9) in the interior, a detection table (16) on one side of a feeding table (1), the detection table (16) comprising a second workbench, a light source plate (31) on the top of the second workbench and at the center position, the top end of the second workbench is fixedly provided with a supporting plate (17), and one side of the supporting plate (17) is fixedly provided with a fixing frame (29).

2. The device for detecting a cutting edge of a PCB in a PCB circuit as set forth in claim 1, wherein: square through-hole (18) has been seted up in running through on backup pad (17) one side, square through-hole (18) one side rotation is installed screw rod (19), screw rod (19) one end runs through square through-hole (18) inside lateral wall extremely backup pad (17) one side, screw rod (19) one end rotation is installed No. two positive and negative motors, no. two positive and negative motors one side with backup pad (17) one side fixed mounting, screw rod (19) surface screw thread is provided with movable block (20), movable block (20) top and bottom with square through-hole (18) upper surface and lower surface slidable mounting, movable block (20) one side fixed mounting has connecting plate (21), connecting plate (21) one side fixed mounting has two regulation pole (22), two regulation pole (22) inside slidable mounting has installation piece (23), installation piece (23) one side fixed mounting has mounting plate (25), installation plate (25) bottom fixed mounting has adsorption frame (26), installation piece (23) top fixed mounting has adjusting cylinder (24), adjusting cylinder (24) one side with connecting plate (21) one side fixed mounting.

3. The device for detecting a cutting edge of a PCB in a PCB circuit as set forth in claim 1, wherein: two spliced poles (37) are fixedly arranged at the bottom end of the second workbench, two fixed bottom plates (38) are fixedly arranged at the bottom ends of the spliced poles (37), two supporting air cylinders (35) are fixedly arranged at the top ends of the fixed bottom plates (38) and close to four corners, eight supporting air cylinders (35) penetrate through the bottom end of the second workbench, and two placing plates (36) are fixedly arranged at the top ends of the supporting air cylinders (35).

4. The device for detecting a cutting edge of a PCB according to claim 2, wherein: the detector (30) is fixedly arranged at the bottom end of the fixing frame (29), two first adsorption discs (12) are fixedly communicated with the top surface of the feeding plate (4), four second adsorption discs are fixedly communicated with the top end of the light source plate (31), and four third adsorption discs are fixedly arranged inside the adsorption frame (26).

5. The device for detecting a cutting edge of a PCB according to claim 2, wherein: and a triangular plate (27) is fixedly arranged at one side of the mounting block (23) and close to the edge positions of the two sides, and the bottom ends of the two triangular plates (27) are fixedly arranged at the top ends of the mounting plates (25).

6. The device for detecting a cutting edge of a PCB in a PCB circuit as set forth in claim 1, wherein: the feeding plate (4) is fixedly provided with a buffer rubber pad (13) on one side, a first limiting groove (14) is formed in two side walls inside the first sliding groove (7), a first limiting rod (15) is fixedly connected to two side walls of the first sliding block (8), and the outer surfaces of the first limiting rods (15) are respectively and slidably mounted on the inner surfaces of the first limiting grooves (14).

7. The device for detecting a cutting edge of a PCB in a PCB manufacturing apparatus of claim 5, wherein: the utility model discloses a sliding device for the automobile, including mounting panel (25) top and fixed mounting has air pump (28) between set square (27), two No. two spouts have all been seted up to regulation pole (22) inside wall, mounting block (23) both sides fixedly connected with No. two sliders, two No. two spout internal surfaces respectively with two No. two slider surface slidable mounting.

8. A device for inspecting a cut edge of a PCB according to claim 3, wherein: two control boards (32) are fixedly arranged at the top end of the second workbench and positioned at the positions of two sides of the light source board (31), one side of each control board (32) is provided with a through hole (33) in a penetrating mode, the inner surfaces of the two through holes (33) are fixedly provided with infrared detectors (34), and eight supporting cylinders (35) are in telecommunication connection with the two infrared detectors (34) respectively.

9. The device for detecting a cutting edge of a PCB according to claim 2, wherein: the square through hole (18) is inside top surface and bottom surface all have seted up No. two spacing grooves, no. two gag lever posts of equal fixedly connected with in movable block (20) upper end and bottom, two No. two spacing groove internal surfaces respectively with two No. two gag lever post surface slidable mounting.

10. The device for detecting a cutting edge of a PCB in a PCB circuit as set forth in claim 6, wherein: the inner size of the first limiting groove (14) is the same as that of the first limiting rod (15), and the inner size of the first sliding groove (7) is the same as that of the first sliding block (8).