CN114935713A

CN114935713A - PCB testing device and using method thereof

Info

Publication number: CN114935713A
Application number: CN202210423466.7A
Authority: CN
Inventors: 方少平; 赵彪; 丰富贵; 李德军
Original assignee: Hunan Sanlicheng Technology Co ltd
Current assignee: Hunan Sanlicheng Technology Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-08-23
Anticipated expiration: 2042-04-21
Also published as: CN114935713B

Abstract

The invention relates to a PCB testing device and a using method thereof, belonging to the technical field of detecting devices, comprising a workbench, wherein the top of the workbench is fixedly connected with two supporting plates, the top of the workbench is provided with a conveyer belt, a plurality of PCBs are placed on the top of the conveyer belt, a first rotating shaft and a second rotating shaft are rotatably connected between the two supporting plates, and the outer wall of the first rotating shaft is fixedly sleeved with a detecting component for quickly detecting the PCBs, avoid the circuit on the PCB board to appear damaging in the transportation of later stage PCB board.

Description

PCB testing device and using method thereof

Technical Field

The invention belongs to the technical field of detection devices, and relates to a PCB testing device and a using method thereof.

Background

The PCB is used as the most important core component in electronic products, and has higher and higher requirements for performance testing, and the quality of the PCB directly affects the quality of the whole electronic device.

When current PCB board is tested, need the handheld test probe of staff to aim at the test port on the PCB board, and then test the PCB board one by one, can't accurate in-process that artifical detected aim at the port and detect, and detect through the manual work, detection efficiency is extremely low, and after detecting, directly transport the PCB board to next process, because the PCB board makes the PCB board damage easily at the in-process of transportation after detecting, and then the spoilage of PCB board is high at present, the cost of direct PCB board production, in addition when detecting the PCB board, because PCB board surface layer is covered with the dust, consequently test probe is examining the time measuring to the PCB board, test probe can't the accuracy detect.

Disclosure of Invention

In view of this, the invention provides a PCB testing device to solve the problems in the prior art that the detection efficiency is low, the PCB is easily damaged during transportation, and the surface of the PCB is covered with dust.

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

a PCB testing device comprises a workbench, wherein two supporting plates are fixedly connected to the top of the workbench, a conveying belt is arranged on the top of the workbench, a plurality of PCBs are placed on the top of the conveying belt, and a first rotating shaft and a second rotating shaft are rotatably connected between the two supporting plates;

the outer wall of the first rotating shaft is fixedly sleeved with a detection assembly for rapidly detecting the PCB;

the outer wall of the second rotating shaft is fixedly sleeved with a film pasting component for pasting and protecting a PCB;

one side of one of the supporting plates is provided with a driving component for driving the detection component and the film sticking component simultaneously.

Further, the determine module establishes the sleeve at first pivot outer wall including fixed cover, a plurality of spouts of annular arrangement in the sleeve, the spout is close to the first spring of one side inner wall fixedly connected with of first pivot, sliding connection has the slide bar with first spring other end fixed connection in the spout, the one end fixedly connected with rectangular rod of first pivot is kept away from to the slide bar, one side fixedly connected with detection box of first pivot is kept away from to the rectangular rod.

Further, the pad pasting subassembly is including fixed cover establishing the rotor arm at second pivot outer wall, be equipped with the rectangular channel in the rotor arm, the rectangular channel is close to one side inner wall fixedly connected with third spring of second pivot, sliding connection has the rectangle slider with third spring other end fixed connection in the rectangular channel, the other end fixedly connected with flitch of rectangle slider, one side that the second pivot was kept away from to the flitch is fixed to be inlayed and is equipped with vacuum chuck, two fixedly connected with places the case between the backup pad.

Further, drive assembly is including setting up the driving motor in one of them backup pad one side, driving motor's the first gear of output shaft fixedly connected with, the one end of first pivot is rotated and is run through backup pad and fixedly connected with second gear, and the second gear meshes with first gear mutually, one of them one side of backup pad is rotated and is connected with the third gear, and the third gear meshes with the second gear mutually, the skew one side fixedly connected with cylinder in the centre of a circle of third gear, the cylindrical outer wall is rotated the cover and is equipped with the connecting rod, the other end of connecting rod is rotated and is connected with the rack, and rack and one of them backup pad sliding connection, the one end of second pivot is rotated and is run through backup pad and fixedly connected with fourth gear, and fourth gear meshes with the rack mutually.

Furthermore, two one side that the backup pad is close to each other all is equipped with ring channel and first chute, and the ring channel is linked together with first chute, two equal sliding connection in one side that the ring channel is close to each other has a plurality of round bars, the round bar is close to detection box one end and rectangular pole fixed connection, and first pivot drives the sleeve and rotates, when the round bar aligns with first chute position, detects the box and under the cooperation of first chute, slide bar and first spring, can make detection box downstream detect the PCB board, and then first pivot rotation round can detect a plurality of PCB boards.

Further, two one side that the backup pad is close to each other all is equipped with arc wall, second chute and third chute, and third chute all is linked together, two with the arc wall with the second chute equal sliding connection in one side that the third chute is close to each other has the slide bar, the one end and the flitch fixed connection of backup pad are kept away from to the slide bar, drive the reciprocal 90 rotations of rotor arm along with the second pivot, when the slide bar aligns with second chute and third chute respectively, the flitch can be to keeping away from one side removal of second pivot under the spring action of third spring, can make vacuum chuck adsorb the protection film of placing in the case then to laminate the protection film at the top of PCB board.

Furthermore, sliding connection has the sliding plate in the detection box, one side fixedly connected with a plurality of second springs of sliding plate near first pivot, and the other end of a plurality of second springs all with the detection box be close to one side inner wall fixed connection of first pivot, a plurality of test probe of one side fixedly connected with of first pivot are kept away from to the sliding plate, and test probe's the other end slides and runs through the detection box, and when test probe touched with the arc wall, test probe received the resistance promotion sliding plate extrusion second spring of PCB board, and then the cooperation of sliding plate and second spring can play the cushioning effect to test probe, avoids appearing damaging between test probe and the PCB board.

Furthermore, one side fixedly connected with fixed plate of backup pad, and the bottom of fixed plate and the top sliding connection of rack, through the sliding fit of rack and fixed plate, can make the steady reciprocal slip that carries on of rack, and then make the second pivot drive the rotor arm and reciprocate, accomplish the pad pasting to the PCB board.

Further, two one side that the backup pad is close to each other is rotated and is connected with same axis of rotation, the fixed cover of outer wall of axis of rotation is equipped with the cleaning wheel, the one end of axis of rotation is rotated and is run through one of them backup pad and the first synchronizing wheel of fixedly connected with, and one side fixedly connected with second synchronizing wheel of backup pad is kept away from to first gear, be connected through synchronous belt drive between second synchronizing wheel and the first synchronizing wheel, start the first gear of driving motor drive and rotate, and first gear drives the second synchronizing wheel and rotates, and the second synchronizing wheel passes through the synchronous belt and drives first synchronizing wheel and axis of rotation and rotate, and the axis of rotation drives the cleaning wheel and rotates, and the cleaning wheel can clean the PCB board top that the conveyer belt was carried, avoids the subsequent detection of dust influence at PCB board top.

The use method of the PCB testing device comprises the following steps:

s1, starting a driving motor to drive a first gear to rotate, driving a second synchronous wheel to rotate by the first gear, driving the first synchronous wheel and a rotating shaft to rotate by the second synchronous wheel through a synchronous belt, driving a cleaning wheel to rotate by the rotating shaft, cleaning the top of the PCB conveyed by a conveying belt by the cleaning wheel, and avoiding the influence of dust on the top of the PCB on subsequent detection;

s2, along with conveying of the PCB by the conveying belt, when the PCB is aligned with the first inclined groove, the first gear drives the second gear and the first rotating shaft to rotate, the first rotating shaft drives the sleeve, the sliding rod and the detection box to rotate, and the sliding rod extrudes the first spring at all times as the detection box and the round rod are restrained by the annular groove;

s3, the sleeve and the detection box are driven to rotate along with the first rotating shaft, when one of the round rods is located at the lowest end, the round rod moves downwards under the action of the elastic force of the first spring, the round rod drives the rectangular rod and the detection box to move downwards, the detection probe is in contact with the top of the PCB to detect the PCB, when the detection probe is in contact with the top of the PCB, the second spring is matched with the sliding plate, when the detection probe is in contact with the PCB, the second spring can start a buffering effect on the detection probe, and the detection probe and the PCB are prevented from colliding with each other to damage the detection probe and the PCB;

s4, when the PCB is detected by the detection probe, the second gear is engaged with the third gear, the second gear drives the third gear to rotate, the third gear drives the cylinder to rotate, the cylinder drives the rack to slide towards the fourth gear through the connecting rod along with the rotation of the third gear and the cylinder, the rack is engaged with the fourth gear, the rack drives the fourth gear and the second rotating shaft to rotate 90 degrees, the second rotating shaft drives the rotating arm and the pasting plate to rotate 90 degrees clockwise, the sliding rod retracts into the arc-shaped groove under the action of the third chute, the third spring starts to compress, the vacuum chuck drives the adsorbed protective film to separate from the placing box, the vacuum chuck drives the protective film to rotate clockwise along the track of the arc-shaped groove until the sliding rod moves to the second chute, and the sliding rod, the pasting plate and the rectangular sliding block move downwards under the action of the elasticity of the third spring, the vacuum chuck attaches the adsorbed protective film to the top of the PCB, so that the PCB is protected and dust is prevented from covering the PCB again;

s5, when the second gear drives the first rotating shaft and the sleeve to rotate, when one of the round rods is separated from the first chute and the other round rod enters the first chute, the second gear can drive the third gear to rotate for a circle, and the third gear can drive the fourth gear to rotate for 90 degrees in a reciprocating manner by the aid of the third gear rotating for a circle.

The invention has the beneficial effects that:

1. according to the PCB testing device disclosed by the invention, the driving motor is started to drive the first gear to rotate, the first gear drives the second synchronous wheel to rotate, the second synchronous wheel drives the first synchronous wheel and the rotating shaft to rotate through the synchronous belt, the rotating shaft drives the cleaning wheel to rotate, and the cleaning wheel can clean the top of the PCB conveyed by the conveying belt, so that the influence of dust on the top of the PCB on subsequent detection is avoided;

2. according to the PCB testing device disclosed by the invention, the first rotating shaft and the sleeve are driven to rotate through the second gear, when the round rod rotates into the first chute, the sliding rod and the detection box move downwards under the action of the elastic force of the first spring, the detection probe can detect the PCB, and then the detection boxes can respectively move downwards when the first rotating shaft and the sleeve rotate for one circle, so that the PCB can be quickly detected, and the detection efficiency is improved;

3. according to the PCB testing device disclosed by the invention, the detection probe moves downwards through the detection box, when the detection probe is contacted with the PCB, the detection probe is extruded by the resistance of the PCB to the second spring, and further, the detection probe and the PCB can be prevented from being damaged when the detection probe detects the PCB through the matching of the second spring and the sliding plate;

4. according to the PCB testing device disclosed by the invention, the fourth gear can be driven to rotate 90 degrees in a reciprocating manner through the reciprocating movement of the rack, when the second rotating shaft drives the rotating arm to rotate in a reciprocating manner, the sliding rod can adsorb and attach the protective film in the placing box to the top of the PCB through the vacuum chuck under the matching of the arc-shaped groove, the second chute, the third chute and the third spring, so that the PCB is protected, and dust can be prevented from covering the PCB again.

According to the PCB cleaning device, the driving motor can be started to drive the first gear to rotate, so that dust on the top of the PCB can be cleaned at the same time, the PCB is detected, the protective film is attached to the top of the PCB, a plurality of operations can be completed at the same time through rotation of the first gear, the detection efficiency of the PCB is greatly improved, the detection accuracy of the detection probe is ensured, the PCB can be protected, and the circuit on the PCB is prevented from being damaged in the later transportation process of the PCB.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a three-dimensional view of a PCB testing apparatus according to the present invention;

FIG. 2 is an internal three-dimensional view of a PCB testing device according to the present invention;

fig. 3 is a three-dimensional cross-sectional view of a sleeve of a PCB testing apparatus according to the present invention;

FIG. 4 is a three-dimensional cross-sectional view of a testing box of a PCB testing device according to the present invention;

FIG. 5 is a three-dimensional view of an arc-shaped groove and an annular groove of the PCB testing device provided by the invention;

FIG. 6 is a three-dimensional cross-sectional view of a film assembly of a PCB testing device according to the present invention;

FIG. 7 is a three-dimensional view of a driving assembly of a PCB testing device according to the present invention;

FIG. 8 is an enlarged view at A in FIG. 7;

fig. 9 is a three-dimensional view of a PCB testing apparatus according to a second embodiment of the present invention.

Reference numerals: 1. a work table; 2. a conveyor belt; 3. a support plate; 4. an annular groove; 5. a first rotating shaft; 6. a sleeve; 7. a round bar; 8. a rectangular bar; 9. a PCB board; 10. a detection cartridge; 11. a first chute; 12. a chute; 13. a first spring; 14. a slide bar; 15. a sliding plate; 16. a second spring; 17. detecting a probe; 18. a second rotating shaft; 19. an arc-shaped slot; 20. a second chute; 21. a third chute; 22. a slide bar; 23. a rotating arm; 24. a rectangular groove; 25. a third spring; 26. a rectangular slider; 27. pasting a board; 28. a vacuum chuck; 29. placing a box; 30. a drive motor; 31. a first gear; 32. a second gear; 33. a third gear; 34. a cylinder; 35. a connecting rod; 36. a rack; 37. a fixing plate; 38. a fourth gear; 39. a rotating shaft; 40. cleaning wheels; 41. a first synchronizing wheel; 42. a second synchronizing wheel; 43. and (4) a synchronous belt.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Example one

Referring to fig. 1-8, a PCB testing device comprises a workbench 1, two supporting plates 3 are fixedly connected to the top of the workbench 1 through bolts, a conveyor belt 2 is arranged on the top of the workbench 1, a plurality of PCBs 9 are placed on the top of the conveyor belt 2, a first rotating shaft 5 and a second rotating shaft 18 are rotatably connected between the two supporting plates 3, a detection assembly for rapidly detecting the PCBs 9 is fixedly sleeved on the outer wall of the first rotating shaft 5, a film pasting assembly for pasting and protecting the PCBs 9 is fixedly sleeved on the outer wall of the second rotating shaft 18, a driving assembly for simultaneously driving the detection assembly and the film pasting assembly is arranged on one side of one of the supporting plates 3, a fixing plate 37 is fixedly connected to one side of one of the supporting plates 3 through bolts, the bottom of the fixing plate 37 is slidably connected to the top of a rack 36, and is slidably matched with the fixing plate 37 through the rack 36, the rack 36 can slide back and forth stably, and the second rotating shaft 18 drives the rotating arm 23 to move back and forth, so that the film sticking of the PCB 9 is completed.

In the invention, the detection assembly comprises a sleeve 6 fixedly sleeved on the outer wall of a first rotating shaft 5, a plurality of sliding grooves 12 are annularly arranged in the sleeve 6, a first spring 13 is fixedly connected to the inner wall of one side of the sliding groove 12 close to the first rotating shaft 5, a sliding rod 14 fixedly connected with the other end of the first spring 13 is slidably connected in the sliding groove 12, one end of the sliding rod 14 far away from the first rotating shaft 5 is fixedly connected with a rectangular rod 8 through a bolt, one side of the rectangular rod 8 far away from the first rotating shaft 5 is fixedly connected with a detection box 10 through a bolt, the first rotating shaft 5 and the sleeve 6 are driven to rotate through a second gear 32, when a round rod 7 rotates into a first chute 11, the sliding rod 14 and the detection box 10 move downwards under the elastic force of the first spring 13, at the moment, a detection probe 17 can detect a PCB 9, and further, the detection boxes 10 can respectively move downwards when the first rotating shaft 5 and the sleeve 6 rotate for one circle, the PCB board 9 can be detected quickly, and the detection efficiency is improved.

In the invention, the film sticking component comprises a rotating arm 23 fixedly sleeved on the outer wall of the second rotating shaft 18 through a bolt, a rectangular groove 24 is arranged in the rotating arm 23, the inner wall of one side of the rectangular groove 24, which is close to the second rotating shaft 18, is fixedly connected with a third spring 25, a rectangular sliding block 26 fixedly connected with the other end of the third spring 25 through a bolt is slidably connected in the rectangular groove 24, the other end of the rectangular sliding block 26 is fixedly connected with a sticking plate 27 through a bolt, a vacuum chuck 28 is fixedly embedded in one side of the sticking plate 27, which is far away from the second rotating shaft 18, through a bolt, a placing box 29 is fixedly connected between the two supporting plates 3, through the reciprocating movement of a rack 36, a fourth gear 38 can be driven to rotate for 90 degrees in a reciprocating manner, when the rotating arm 23 is driven by the second rotating shaft 18 to rotate in a reciprocating manner, a sliding rod 22 can be used for adsorbing and sticking the protective film in the placing box 29 on the top of the PCB 9 through the vacuum chuck 28 under the cooperation of the arc-shaped groove 19, the second chute 20, the third chute 21 and the third spring 25, the PCB board 9 is protected while preventing dust from covering the PCB board 9 again.

In the invention, the driving assembly comprises a driving motor 30 arranged on one side of one of the support plates 3, an output shaft of the driving motor 30 is fixedly connected with a first gear 31, one end of a first rotating shaft 5 rotatably penetrates through the support plates 3 and is fixedly connected with a second gear 32, the second gear 32 is meshed with the first gear 31, one side of one of the support plates 3 is rotatably connected with a third gear 33, the third gear 33 is meshed with the second gear 32, one side of the third gear 33, which is deviated from the center of a circle, is fixedly connected with a cylinder 34 through a bolt, the outer wall of the cylinder 34 is rotatably sleeved with a connecting rod 35, the other end of the connecting rod 35 is rotatably connected with a rack 36, the rack 36 is slidably connected with one of the support plates 3, one end of a second rotating shaft 18 rotatably penetrates through the support plates 3 and is fixedly connected with a fourth gear 38, and the fourth gear 38 is meshed with the rack 36.

According to the invention, the annular groove 4 and the first chute 11 are arranged on the mutually close sides of the two supporting plates 3, the annular groove 4 is communicated with the first chute 11, the mutually close sides of the two annular grooves 4 are connected with a plurality of round rods 7 in a sliding manner, one ends of the round rods 7 close to the detection box 10 are fixedly connected with the rectangular rods 8 through bolts, the first rotating shaft 5 drives the sleeve 6 to rotate, when the round rods 7 are aligned with the first chute 11, the detection box 10 can move downwards to detect the PCB 9 under the matching of the first chute 11, the sliding rods 14 and the first spring 13, and then the first rotating shaft 5 rotates for one circle to detect a plurality of PCBs 9.

According to the invention, the arc-shaped groove 19, the second chute 20 and the third chute 21 are respectively arranged on the sides, close to each other, of the two support plates 3, the third chute 21 and the second chute 20 are communicated with the arc-shaped groove 19, the sides, close to each other, of the two third chutes 21 are respectively connected with the sliding rod 22 in a sliding manner, one end, far away from the support plates 3, of the sliding rod 22 is fixedly connected with the attachment plate 27 through a bolt, the rotating arm 23 is driven by the second rotating shaft 18 to rotate for 90 degrees in a reciprocating manner, when the sliding rod 22 is respectively aligned with the second chute 20 and the third chute 21, the attachment plate 27 can move towards the side, far away from the second rotating shaft 18, under the elastic force action of the third spring 25, and then the vacuum chuck 28 can adsorb the protective film in the placing box 29 and attach the protective film to the top of the PCB 9.

According to the invention, the sliding plate 15 is connected in the detection box 10 in a sliding manner, one side of the sliding plate 15 close to the first rotating shaft 5 is fixedly connected with the plurality of second springs 16, the other ends of the plurality of second springs 16 are fixedly connected with the inner wall of one side of the detection box 10 close to the first rotating shaft 5, one side of the sliding plate 15 far away from the first rotating shaft 5 is fixedly connected with the plurality of detection probes 17 through bolts, the other ends of the detection probes 17 penetrate through the detection box 10 in a sliding manner, when the detection probes 17 touch the arc-shaped groove 19, the detection probes 17 are pushed by the sliding plate 15 to extrude the second springs 16 under the resistance of the PCB 9, and the sliding plate 15 is matched with the second springs 16 to buffer the detection probes 17, so that the detection probes 17 and the PCB 9 are prevented from being damaged.

Example two

As a further improvement of the previous embodiment, referring to fig. 1 to 9, the present embodiment is a PCB testing apparatus, which includes a workbench 1, two supporting plates 3 are fixedly connected to the top of the workbench 1 through bolts, a conveyor belt 2 is disposed on the top of the workbench 1, a plurality of PCBs 9 are disposed on the top of the conveyor belt 2, a first rotating shaft 5 and a second rotating shaft 18 are rotatably connected between the two supporting plates 3, a detecting assembly for rapidly detecting the PCBs 9 is fixedly sleeved on the outer wall of the first rotating shaft 5, a film attaching assembly for attaching and protecting the PCBs 9 is fixedly sleeved on the outer wall of the second rotating shaft 18, a driving assembly for simultaneously driving the detecting assembly and the film attaching assembly is disposed on one side of one of the supporting plates 3, a fixing plate 37 is fixedly connected to one side of one of the supporting plates 3 through bolts, and the bottom of the fixing plate 37 is slidably connected to the top of a rack 36, through the sliding fit of the rack 36 and the fixing plate 37, the rack 36 can slide back and forth stably, and then the second rotating shaft 18 drives the rotating arm 23 to move back and forth, so that the film pasting of the PCB 9 is completed.

In the invention, the detection component comprises a sleeve 6 fixedly sleeved on the outer wall of a first rotating shaft 5, a plurality of sliding grooves 12 are annularly arranged in the sleeve 6, the inner wall of one side of each sliding groove 12, which is close to the first rotating shaft 5, is fixedly connected with a first spring 13, a sliding rod 14 fixedly connected with the other end of the first spring 13 is slidably connected in each sliding groove 12, one end, which is far away from the first rotating shaft 5, of each sliding rod 14 is fixedly connected with a rectangular rod 8 through a bolt, one side, which is far away from the first rotating shaft 5, of each rectangular rod 8 is fixedly connected with a detection box 10 through a bolt, the first rotating shaft 5 and the sleeve 6 are driven to rotate through a second gear 32, when a round rod 7 rotates into a first chute 11, each sliding rod 14 and each detection box 10 move downwards under the elastic force of the first spring 13, at the moment, a detection probe 17 can detect a PCB 9, and further, when the first rotating shaft 5 and the sleeve 6 rotate for one circle, the detection boxes 10 can respectively move downwards, the PCB board 9 can be detected quickly, and the detection efficiency is improved.

In the invention, the film sticking component comprises a rotating arm 23 fixedly sleeved on the outer wall of the second rotating shaft 18 through a bolt, a rectangular groove 24 is arranged in the rotating arm 23, a third spring 25 is fixedly connected on the inner wall of one side of the rectangular groove 24 close to the second rotating shaft 18, a rectangular sliding block 26 fixedly connected with the other end of the third spring 25 through a bolt is connected in the rectangular groove 24 in a sliding manner, the other end of the rectangular sliding block 26 is fixedly connected with a pasting plate 27 through a bolt, a vacuum chuck 28 is fixedly embedded on one side of the pasting plate 27 far away from the second rotating shaft 18 through a bolt, a placing box 29 is fixedly connected between the two supporting plates 3 through a bolt, a fourth gear 38 can be driven to rotate 90 degrees in a reciprocating manner through the reciprocating movement of a rack 36, when the rotating arm 23 is driven to rotate in a reciprocating manner by the second rotating shaft 18, a sliding rod 22 can suck and stick the protective film in the placing box 29 on the top of the PCB 9 through the vacuum chuck 28 under the cooperation of the arc-shaped groove 19, the second chute 20, the third chute 21 and the third spring 25, the PCB board 9 is protected while preventing dust from covering the PCB board 9 again.

According to the invention, the annular grooves 4 and the first chute 11 are respectively arranged on the sides, close to each other, of the two supporting plates 3, the annular grooves 4 are communicated with the first chute 11, the sides, close to each other, of the two annular grooves 4 are respectively connected with the round rods 7 in a sliding manner, one ends, close to the detection box 10, of the round rods 7 are fixedly connected with the rectangular rods 8 through bolts, the first rotating shaft 5 drives the sleeve 6 to rotate, when the round rods 7 are aligned with the first chute 11, the detection box 10 can move downwards to detect the PCB 9 under the matching of the first chute 11, the sliding rods 14 and the first spring 13, and then the first rotating shaft 5 rotates one circle to detect the PCB 9.

In the invention, one side of the two support plates 3 close to each other is rotatably connected with the same rotating shaft 39, the outer wall of the rotating shaft 39 is fixedly sleeved with a cleaning wheel 40, one end of the rotating shaft 39 rotatably penetrates through one of the support plates 3 and is fixedly connected with a first synchronizing wheel 41, one side of the first gear 31 far away from the support plate 3 is fixedly connected with a second synchronizing wheel 42, the second synchronizing wheel 42 is in transmission connection with the first synchronizing wheel 41 through a synchronous belt 43, the driving motor 30 is started to drive the first gear 31 to rotate, the first gear 31 drives the second synchronizing wheel 42 to rotate, the second synchronizing wheel 42 drives the first synchronizing wheel 41 and the rotating shaft 39 to rotate through the synchronous belt 43, the rotating shaft 39 drives the cleaning wheel 40 to rotate, and the cleaning wheel 40 can clean the top of the PCB 9 conveyed by the conveying belt 2, thereby avoiding the influence of dust on the top of the PCB 9 on subsequent detection.

The advantages of the second embodiment over the first embodiment are: one side that two backup pads 3 are close to each other rotates and is connected with same axis of rotation 39, and the fixed cover of the outer wall of axis of rotation 39 is equipped with cleaning wheel 40, and the one end of axis of rotation 39 is rotated and is run through one of them backup pad 3 and fixedly connected with first synchronizing wheel 41, and one side fixedly connected with second synchronizing wheel 42 that backup pad 3 was kept away from to first gear 31 is connected through the synchronous belt 43 transmission between second synchronizing wheel 42 and the first synchronizing wheel 41.

A use method of a PCB testing device comprises the following steps:

s1, the driving motor 30 is started to drive the first gear 31 to rotate, the first gear 31 drives the second synchronizing wheel 42 to rotate, the second synchronizing wheel 42 drives the first synchronizing wheel 41 and the rotating shaft 39 to rotate through the synchronizing belt 43, the rotating shaft 39 drives the cleaning wheel 40 to rotate, the cleaning wheel 40 can clean the top of the PCB 9 conveyed by the conveying belt 2, and the influence of dust on the top of the PCB 9 on subsequent detection is avoided;

s2, along with the conveying of the PCB 9 by the conveying belt 2, when the PCB 9 is aligned with the first chute 11, the first gear 31 drives the second gear 32 and the first rotating shaft 5 to rotate, the first rotating shaft 5 drives the sleeve 6, the slide bar 14 and the detection box 10 to rotate, and as the detection box 10 and the round bar 7 are restrained by the annular groove 4, the slide bar 14 always extrudes the first spring 13;

s3, the sleeve 6 and the detection box 10 are driven to rotate along with the first rotating shaft 5, when one of the round rods 7 is located at the lowest end, the round rod 7 moves downwards under the elastic force of the first spring 13, the round rod 7 drives the rectangular rod 8 and the detection box 10 to move downwards, the detection probe 17 touches the top of the PCB 9 to detect the PCB 9, when the detection probe 17 touches the top of the PCB 9, the second spring 16 is matched with the sliding plate 15, and when the detection probe 17 touches the PCB 9, the second spring 16 can start a buffering effect on the detection probe 17 to prevent the detection probe 17 and the PCB 9 from colliding with each other to damage the detection probe 17 and the PCB 9;

s4, when the PCB 9 is detected by the detection probe 17, the second gear 32 is engaged with the third gear 33, the second gear 32 drives the third gear 33 to rotate, the third gear 33 drives the cylinder 34 to rotate, along with the rotation of the third gear 33 and the cylinder 34, the cylinder 34 drives the rack 36 to slide towards the fourth gear 38 through the connecting rod 35, the rack 36 is engaged with the fourth gear 38, the rack 36 drives the fourth gear 38 and the second rotating shaft 18 to rotate 90 degrees, the second rotating shaft 18 drives the rotating arm 23 and the pasting plate 27 to rotate 90 degrees clockwise, the sliding rod 22 retracts into the arc-shaped groove 19 under the action of the third chute 21, the third spring 25 starts to compress, the vacuum chuck 28 drives the adsorbed protective film to separate from the placing box 29, the vacuum chuck 28 drives the protective film to rotate clockwise along the track of the arc-shaped groove 19 until the sliding rod 22 moves to the second chute 20, the sliding rod 22, the pasting plate 27 and the rectangular sliding block 26 move downwards under the action of the elastic force of the third spring 25, and the vacuum chuck 28 attaches the adsorbed protective film to the top of the PCB 9, so that the PCB 9 is protected and dust is prevented from covering the PCB 9 again;

s5, when the second gear 32 drives the first rotating shaft 5 and the sleeve 6 to rotate, when one of the round rods 7 is disengaged from the first chute 11 and the other round rod 7 enters the first chute 11, the second gear 32 can drive the third gear 33 to rotate for one turn, and the third gear 33 can make the rack 36 drive the fourth gear 38 to rotate for 90 ° in a reciprocating manner.

However, as the working principle and wiring method of the driving motor 30, the PCB board 9 and the detecting probe 17 are well known to those skilled in the art, they are not described herein and may be arbitrarily selected by those skilled in the art according to their needs or convenience.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. A PCB testing device comprises a workbench (1), and is characterized in that two supporting plates (3) are fixedly connected to the top of the workbench (1), a conveying belt (2) is arranged at the top of the workbench (1), a plurality of PCBs (9) are placed at the top of the conveying belt (2), and a first rotating shaft (5) and a second rotating shaft (18) are rotatably connected between the two supporting plates (3);

a detection assembly for rapidly detecting the PCB (9) is fixedly sleeved on the outer wall of the first rotating shaft (5);

a film sticking component for sticking and protecting a film on the PCB (9) is fixedly sleeved on the outer wall of the second rotating shaft (18);

one side of one of the supporting plates (3) is provided with a driving component for driving the detection component and the film sticking component simultaneously.

2. The PCB testing device of claim 1, wherein the detecting component comprises a sleeve (6) fixedly sleeved on the outer wall of the first rotating shaft (5), a plurality of sliding grooves (12) are annularly arranged in the sleeve (6), a first spring (13) is fixedly connected to the inner wall of one side of the sliding groove (12) close to the first rotating shaft (5), a sliding rod (14) fixedly connected with the other end of the first spring (13) is slidably connected in the sliding groove (12), a rectangular rod (8) is fixedly connected to one end of the sliding rod (14) far away from the first rotating shaft (5), and a detecting box (10) is fixedly connected to one side of the rectangular rod (8) far away from the first rotating shaft (5).

3. The PCB testing device of claim 1, wherein the film pasting component comprises a rotating arm (23) fixedly sleeved on the outer wall of the second rotating shaft (18), a rectangular groove (24) is formed in the rotating arm (23), a third spring (25) is fixedly connected to the inner wall of one side, close to the second rotating shaft (18), of the rectangular groove (24), a rectangular sliding block (26) fixedly connected with the other end of the third spring (25) is connected in the rectangular groove (24) in a sliding mode, a pasting plate (27) is fixedly connected to the other end of the rectangular sliding block (26), a vacuum sucking disc (28) is fixedly embedded on one side, far away from the second rotating shaft (18), of the pasting plate (27), and a placing box (29) is fixedly connected between the two supporting plates (3).

4. The PCB testing device according to claim 1, wherein the driving assembly comprises a driving motor (30) arranged at one side of one of the supporting plates (3), an output shaft of the driving motor (30) is fixedly connected with a first gear (31), one end of the first rotating shaft (5) rotatably penetrates through the supporting plate (3) and is fixedly connected with a second gear (32), the second gear (32) is meshed with the first gear (31), one side of one of the supporting plates (3) is rotatably connected with a third gear (33), the third gear (33) is meshed with the second gear (32), and one side of the third gear (33) deviating from the center of a circle is fixedly connected with a cylinder (34).

5. The PCB testing device of claim 4, wherein the driving assembly further comprises a connecting rod (35) rotatably sleeved on the outer wall of the cylinder (34), the other end of the connecting rod (35) is rotatably connected with a rack (36), the rack (36) is slidably connected with one of the support plates (3), one end of the second rotating shaft (18) rotatably penetrates through the support plate (3) and is fixedly connected with a fourth gear (38), and the fourth gear (38) is meshed with the rack (36).

6. The PCB testing device of claim 1, wherein one side of each of the two support plates (3) close to each other is provided with an annular groove (4) and a first inclined groove (11), the annular groove (4) is communicated with the first inclined groove (11), one side of each of the two annular grooves (4) close to each other is slidably connected with a plurality of round rods (7), and one end of each round rod (7) close to the detection box (10) is fixedly connected with the rectangular rod (8).

7. The PCB testing device of claim 1, wherein an arc-shaped groove (19), a second inclined groove (20) and a third inclined groove (21) are formed in the mutually close sides of the two support plates (3), the third inclined groove (21) and the second inclined groove (20) are communicated with the arc-shaped groove (19), a sliding rod (22) is connected to the mutually close sides of the two third inclined grooves (21) in a sliding mode, and one end, far away from the support plates (3), of the sliding rod (22) is fixedly connected with the pasting plate (27).

8. The PCB testing device according to claim 2, wherein a sliding plate (15) is slidably connected in the testing box (10), one side of the sliding plate (15) close to the first rotating shaft (5) is fixedly connected with a plurality of second springs (16), the other ends of the plurality of second springs (16) are fixedly connected with the inner wall of one side of the testing box (10) close to the first rotating shaft (5), one side of the sliding plate (15) far away from the first rotating shaft (5) is fixedly connected with a plurality of testing probes (17), and the other ends of the testing probes (17) slide to penetrate through the testing box (10).

9. The PCB testing device of claim 1, wherein one side of the two support plates (3) close to each other is rotatably connected with the same rotating shaft (39), a cleaning wheel (40) is fixedly sleeved on the outer wall of the rotating shaft (39), one end of the rotating shaft (39) is rotatably connected with a first synchronizing wheel (41) penetrating through one of the support plates (3), a second synchronizing wheel (42) is fixedly connected with one side of the first gear (31) far away from the support plates (3), the second synchronizing wheel (42) is in transmission connection with the first synchronizing wheel (41) through a synchronous belt (43), one side of the support plate (3) is fixedly connected with a fixing plate (37), and the bottom of the fixing plate (37) is in sliding connection with the top of the rack (36).

10. The use method of the PCB board testing device according to any one of the claims 1 to 9, characterized by comprising the following steps:

s1, starting a driving motor (30) to drive a first gear (31) to rotate, driving a second synchronous wheel (42) to rotate by the first gear (31), driving a first synchronous wheel (41) and a rotating shaft (39) to rotate by the second synchronous wheel (42) through a synchronous belt (43), driving a cleaning wheel (40) to rotate by the rotating shaft (39), and cleaning the top of a PCB (9) conveyed by a conveying belt (2) by the cleaning wheel (40);

s2, along with conveying of the conveying belt (2) to the PCB (9), when the PCB (9) is aligned with the first chute (11), the first gear (31) drives the second gear (32) and the first rotating shaft (5) to rotate, the first rotating shaft (5) drives the sleeve (6), the sliding rod (14) and the detection box (10) to rotate, and due to the fact that the detection box (10) and the round rod (7) are restrained by the annular groove (4), the sliding rod (14) extrudes the first spring (13) at all times;

s3, along with the rotation of the sleeve (6) and the detection box (10) driven by the first rotating shaft (5), when one of the round rods (7) is located at the lowest end, the round rod (7) moves downwards under the elastic action of the first spring (13), and then the round rod (7) drives the rectangular rod (8) and the detection box (10) to move downwards, the detection probe (17) touches the top of the PCB (9), the PCB (9) is detected, when the detection probe (17) touches the top of the PCB (9), the second spring (16) is matched with the sliding plate (15), when the detection probe (17) touches the PCB (9), the second spring (16) can start the buffer action on the detection probe (17), and the detection probe (17) and the PCB (9) are prevented from colliding with each other to cause the damage of the detection probe (17) and the PCB (9);

s4, when the PCB (9) is detected by the detecting probe (17), the second gear (32) is engaged with the third gear (33), the second gear (32) drives the third gear (33) to rotate, the third gear (33) drives the cylinder (34) to rotate, along with the rotation of the third gear (33) and the cylinder (34), the cylinder (34) drives the rack (36) to slide towards the fourth gear (38) through the connecting rod (35), the rack (36) is engaged with the fourth gear (38), the rack (36) drives the fourth gear (38) and the second rotating shaft (18) to rotate 90 degrees, the second rotating shaft (18) drives the rotating arm (23) and the pasting plate (27) to rotate clockwise 90 degrees, the sliding rod (22) retracts into the arc-shaped groove (19) under the action of the third chute (21), the third spring (25) starts to compress, and the vacuum sucker (28) drives the adsorbed protecting film to separate from the placing box (29), the vacuum sucker (28) drives the protective film to rotate clockwise along the track of the arc-shaped groove (19) until the sliding rod (22) moves to the second inclined groove (20), the sliding rod (22), the pasting plate (27) and the rectangular sliding block (26) move downwards under the action of the elastic force of the third spring (25), the vacuum sucker (28) enables the adsorbed protective film to be pasted on the top of the PCB (9), and dust can be prevented from covering the PCB (9) again while the PCB (9) is protected;

s5, when the second gear (32) drives the first rotating shaft (5) and the sleeve (6) to rotate, when one of the round rods (7) is separated from the first chute (11) and the other round rod (7) enters the first chute (11), the second gear (32) can drive the third gear (33) to rotate for a circle, and the third gear (33) can drive the fourth gear (38) to rotate for 90 degrees in a reciprocating manner by the rack (36) when rotating for a circle.