CN117146728B - Warp detection device is used in PCB board production - Google Patents
Warp detection device is used in PCB board production Download PDFInfo
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- CN117146728B CN117146728B CN202311417928.5A CN202311417928A CN117146728B CN 117146728 B CN117146728 B CN 117146728B CN 202311417928 A CN202311417928 A CN 202311417928A CN 117146728 B CN117146728 B CN 117146728B
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- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims description 21
- 239000011324 bead Substances 0.000 claims description 14
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 abstract description 75
- 238000012545 processing Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000012937 correction Methods 0.000 abstract description 4
- 150000003071 polychlorinated biphenyls Chemical class 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000002950 deficient Effects 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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Abstract
The invention discloses a warp detection device for PCB production, which belongs to the field of PCBs and comprises two detection platforms and a conveying belt for conveying a substrate to be detected, wherein the tops of the two detection platforms are connected with equal-height plates, one sides of the two equal-height plates, which are outwards, are respectively provided with a height measurement laser and an induction plate, the tops of the detection platforms are connected with a driving motor through a support plate, and the output end of the driving motor is connected with a sprocket assembly through a driving shaft. According to the invention, through the arrangement of the upper and lower conveyor belts and the belt wheels, the unqualified copper-clad substrate can be split after the warp detection, and the tilting position of the copper-clad substrate is judged in the splitting process, so that the subsequent correction of the tilting position of the substrate is facilitated, and meanwhile, through the arrangement of the electric push rod and the rechecking guide rail, the unqualified copper-clad substrate with the warp can be hot-pressed and then placed on the conveyor belt for rechecking, so that the warp of the copper-clad substrate used before subsequent processing is qualified, and the waste of subsequent processing resources is reduced.
Description
Technical Field
The invention relates to the technical field of PCB (printed circuit board), in particular to a warp detection device for PCB production.
Background
The name of the PCB is printed circuit board, also called printed circuit board, which is an important electronic component, is a support of electronic components, and is a carrier for the electrical interconnection of the electronic components. It is called a "printed" circuit board because it is made using electronic printing.
The PCB board can design and plan the circuit according to customer's customization demand before production, cut the copper-clad base plate of fixed size in batches, and multilayer PCB board production then needs the laminating of polylith copper-clad base plate cover copper foil under the environment of vacuum high temperature, will carry out subsequent processing after the base plate is handled, at present all detect the warp of fashioned PCB board in production, and part copper-clad base plate is before subsequent processing, just because self or earlier processing have the higher problem of warp, if not directly put into subsequent production through the detection, can cause the yields of PCB board to reduce, cause the waste of subsequent processing production resource simultaneously, so put forward a PCB board production and use warp detection device.
Disclosure of Invention
The invention aims to solve the problem that part of copper-clad substrates in the prior art have higher warpage before subsequent processing, and if the copper-clad substrates are directly put into subsequent production without detection, the yield of the PCB is reduced, and meanwhile, the problem of waste of subsequent processing production resources is caused.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a PCB board production is with warp detection device, includes two testing platform and is used for carrying the conveyer belt of waiting to detect the base plate, two testing platform top all is connected with the contour plate, two contour plate outside one side is provided with height measurement laser and induction plate respectively, testing platform top is connected with driving motor through the backup pad, the driving motor output is provided with sprocket assembly through drive shaft connection, the driving shaft other end is connected with the transition board, the transition board terminal surface is connected with four fixed plates, and is relative two be connected with axis of rotation and sliding shaft between the fixed plate, axis of rotation and sliding shaft lateral wall all are connected with the band pulley, two be located on the sliding shaft be connected with firm board through two compression spring, be located compression spring one side firm board lateral wall is connected with pressure sensor, the testing platform top is connected with the pneumatic cylinder through the mounting panel fixedly connected with, the pneumatic cylinder output is connected with the gland plate, the flat board below is provided with the bearing plate, be provided with a plurality of perforation on the clamp plate, be provided with the perforation in the bearing plate, the valve is provided with the band pulley, be connected with the closing plate through the valve, be provided with the closing plate is connected with on the closing plate one side of the side.
Preferably, two detection platform sets up respectively in the both sides of conveyer belt, detection platform bottom fixedly connected with base, two detection platform side terminal surface is two auxiliary wheel of equal fixedly connected with, detection platform top and contour plate bottom fixed connection.
Preferably, the height measurement laser and the induction plate correspond to each other, the top ends of the two detection platforms are fixedly connected with the bottom ends of the height measurement laser and the induction plate respectively, and the side wall of the driving motor is fixedly connected with the top ends of the detection platforms through the vertical plates.
Preferably, the sprocket assembly comprises a driving wheel, a transmission chain and a driven wheel, the output end of the driving motor is fixedly connected with the inner side wall of the driving wheel through a driving shaft, the driving wheel is connected with the driven wheel through the transmission chain, and the other end of the driving shaft is fixedly connected with the side end face of the transition plate.
Preferably, the driven wheel side wall is fixedly connected with a rotating shaft end part positioned below, four fixed plate end parts are fixedly connected with a transition plate side wall, two rotating shaft end parts are respectively and rotatably connected with the four fixed plate side walls, two sliding shaft end parts are respectively and slidably connected with the four fixed plate side walls, the top end of the transition plate is rotatably connected with a guide plate through two opposite pin shafts, and a torsion spring is arranged on the outer side wall of each pin shaft.
Preferably, the rotation shaft and the outer side wall of the sliding shaft are fixedly connected with the inner side walls of the two pulleys respectively, the outer side wall of the pulley on the sliding shaft is fixedly connected with the side wall of the stabilizing plate through two compression springs, the side wall of the stabilizing plate is fixedly connected with the side wall of the pressure sensor, and the side walls of the stabilizing plate are fixedly connected with the side walls of the fixing plates on the two sides through transverse rods.
Preferably, the pneumatic cylinder output and the clamp plate top fixed connection, a plurality of preheating holes have been seted up to the clamp plate bottom, the clamp plate below is provided with spacing frame, spacing frame lateral wall fixedly connected with hydraulic push rod, hydraulic push rod output fixedly connected with push pedal, spacing frame inside wall and bearing plate lateral wall sliding connection, two relative storage tanks have been seted up on the bearing plate top, storage tank inside wall fixedly connected with sensitization board, equal fixedly connected with telescopic link in bearing plate bottom corner.
Preferably, the valve assembly comprises a one-way bucket, a tension spring and valve beads, wherein the top end of the one-way bucket is fixedly connected with a pore plate, the side wall of the pore plate is fixedly connected with the inner side wall of a valve port on the sealing plate, and two ends of the tension spring are respectively fixedly connected with the bottom end of the pore plate and the top end of the valve beads.
Preferably, the valve pearl bottom fixedly connected with magnetism post, electric putter output lateral wall fixedly connected with annular plate, annular plate top fixedly connected with a plurality of electromagnetism posts, a plurality of electromagnetism post and a plurality of magnetism post one-to-one, the slope of reinspection guide rail sets up in testing platform's top.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, through the arrangement of the contour plate and the height measuring laser, the warping degree of the copper-clad substrate can be measured and calculated before the follow-up fine processing of the PCB, and the situation that the warping degree does not meet the requirement is avoided when the substrate is subjected to the follow-up processing.
2. According to the scheme, through the arrangement of the upper and lower conveyor belts and the belt wheels, unqualified copper-clad substrates can be split after warp detection, and the position of the copper-clad substrates, which is tilted, is judged in the splitting process, so that the follow-up correction of the tilting positions of the substrates is facilitated.
3. According to the scheme, through the arrangement of the electric push rod and the rechecking guide rail, the copper-clad substrate with unqualified warping degree can be placed on the conveying belt for rechecking after hot pressing, so that the warping degree of the copper-clad substrate used before subsequent fine processing is qualified, the waste of subsequent processing resources is reduced, and the defective rate of the produced PCB is reduced.
Drawings
Fig. 1 is a schematic diagram of a three-dimensional structure of a warp detection device for PCB production according to the present invention;
fig. 2 is a schematic diagram of a three-dimensional structure of a warp detection device for PCB production according to the present invention;
fig. 3 is a schematic structural diagram of two detection platform positions in a warp detection device for PCB production according to the present invention;
fig. 4 is a schematic structural view of a downward tilting state of a transition plate in a warp detection device for PCB production according to the present invention;
fig. 5 is a schematic structural diagram of the upper and lower fixing plates in the warp detection device for PCB production according to the present invention;
fig. 6 is a schematic structural diagram of a position of a pressure sensor in a warp detection device for PCB production according to the present invention;
fig. 7 is a schematic structural diagram of the cooperation of the electric push rod and the bearing plate in the warp detection device for PCB production;
fig. 8 is a schematic structural diagram of connection between a sealing plate and a suction cup in the warp detection device for PCB production according to the present invention;
fig. 9 is a schematic structural diagram of the positions of the magnetic column and the electromagnetic column in the warp detection device for PCB production according to the present invention;
fig. 10 is a schematic structural diagram of a valve assembly in a warp detection device for PCB production according to the present invention;
fig. 11 is an enlarged view at a in fig. 1.
In the figure: 1. a detection platform; 2. a conveyor belt; 3. a base; 4. an auxiliary wheel; 5. a contour plate; 6. height measurement laser; 7. an induction plate; 8. a drive motor; 9. a driving wheel; 10. a drive chain; 11. driven wheel; 12. a transition plate; 13. a fixing plate; 14. a rotating shaft; 15. a sliding shaft; 16. a belt wheel; 17. a conveyor belt; 18. a compression spring; 19. a stabilizing plate; 20. a pressure sensor; 21. a guide plate; 22. a hydraulic cylinder; 23. a flattening plate; 24. a limit frame; 25. a hydraulic push rod; 26. a push plate; 27. a pressure bearing plate; 28. a photosensitive plate; 29. a telescopic rod; 30. a suction cup; 31. a sealing plate; 32. an electric push rod; 33. an orifice plate; 34. a one-way bucket; 35. a tension spring; 36. a valve bead; 37. a magnetic column; 38. a ring plate; 39. an electromagnetic column; 40. and rechecking the guide rail.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1-11, a warp detection device for PCB production includes two detection platforms 1 and a conveyor belt 2 for conveying a substrate to be detected, wherein the top ends of the two detection platforms 1 are connected with equal-height plates 5, and an altitude measurement laser 6 and an induction plate 7 are respectively arranged on one outward side of the two equal-height plates 5;
further, the two detection platforms 1 are respectively arranged at two sides of the conveyor belt 2, the bottom ends of the detection platforms 1 are fixedly connected with the base 3, the side end faces of the two detection platforms 1 are fixedly connected with the two auxiliary wheels 4, the top ends of the detection platforms 1 are fixedly connected with the bottom ends of the equal-height plates 5, the height measurement lasers 6 are corresponding to the induction plates 7, the top ends of the two detection platforms 1 are respectively fixedly connected with the height measurement lasers 6 and the bottom ends of the induction plates 7, and the side walls of the driving motors 8 are fixedly connected with the top ends of the detection platforms 1 through vertical plates;
it should be noted that: the copper-clad substrates to be detected are sequentially placed on a conveying belt 2 for conveying, the substrates are driven by the conveying belt 2 to enter a contour plate 5 on a detection platform 1 through an auxiliary wheel 4, the contour plate 5 enables the two ends of the substrates to be kept at the same height, the contour plate 5 is used as the initial height during height measurement, meanwhile, the height measuring laser 6 is matched with an induction plate 7 to measure the highest height of the passing substrates, the length size of the cut substrates is fixed, and therefore the warping degree of the passing substrates is calculated;
the adoption of the method has the following further advantages: therefore, the warping degree of the copper-clad substrate can be measured and calculated before the subsequent fine processing of the PCB, and the situation that the warping degree does not meet the requirement before the subsequent processing of the PCB is avoided.
1-11, the top end of the detection platform 1 is connected with a driving motor 8 through a support plate, the output end of the driving motor 8 is connected with a chain wheel assembly through a driving shaft, the other end of the driving shaft is connected with a transition plate 12, the end face of the transition plate 12 is connected with four fixed plates 13, a rotating shaft 14 and a sliding shaft 15 are connected between the two opposite fixed plates 13, the outer side walls of the rotating shaft 14 and the sliding shaft 15 are both connected with belt wheels 16, a conveyor belt 17 is connected between the two belt wheels 16, one side wall of the belt wheel 16 positioned on the sliding shaft 15 is connected with a stabilizing plate 19 through two compression springs 18, and the side wall of the stabilizing plate 19 positioned on one side of the compression springs 18 is connected with a pressure sensor 20;
further, the chain wheel assembly is composed of a driving wheel 9, a transmission chain 10 and a driven wheel 11, the output end of the driving motor 8 is fixedly connected with the inner side wall of the driving wheel 9 through the driving shaft, the driving wheel 9 is fixedly connected with the driven wheel 11 through the transmission chain 10, the other end of the driving shaft is fixedly connected with the side end face of a transition plate 12, the side wall of the driven wheel 11 is fixedly connected with the end part of a rotating shaft 14 positioned below, the end parts of four fixing plates 13 are fixedly connected with the side wall of the transition plate 12, the end parts of two rotating shafts 14 are respectively and rotatably connected with the side walls of the four fixing plates 13, the end parts of two sliding shafts 15 are respectively and slidably connected with the side walls of the four fixing plates 13, the top end parts of the transition plate 12 are rotatably connected with a guide plate 21 through two opposite pin shafts, torsion springs are arranged on the outer side walls of the pin shafts, the outer side walls of the rotating shaft 14 and the sliding shafts 15 are respectively and fixedly connected with the inner side walls of two belt wheels 16, the outer side walls of the belt wheels 16 positioned on the sliding shafts 15 are fixedly connected with the side walls of a stabilizing plate 19 through two compression springs 18, the side walls of the stabilizing plate 19 are fixedly connected with the side walls of the pressure sensor 20, and the side walls of the stabilizing plate 19 are fixedly connected with the side walls of the fixing plate 13 are fixedly connected with the side walls of the side torsion springs, and the side wall of the side wall is fixedly connected with the side torsion springs, and the side torsion springs are respectively;
it should be noted that: if the measured substrate warping degree is qualified, the measured substrate warping degree is continuously conveyed forwards along the conveying belt 2 to a subsequent processing stage, if the measured substrate warping degree is unqualified, the driving motor 8 drives the transition plate 12 to rotate downwards through the driving shaft, so that a bracket on the transition plate 12 is flush with the conveying belt 2, the conveyed substrate moves upwards, the driving shaft rotates to drive the driving wheel 9 to rotate, the driving wheel 9 rotates to drive the driven wheel 11 through the driving chain 10, the driven wheel 11 rotates to drive the rotating shaft 14 to rotate, the rotating shaft 14 rotates to drive the other belt wheel 16 on the sliding shaft 15 through one belt wheel 16 on the rotating shaft 14, the unqualified substrate enters between the upper conveying belt 17 and the lower conveying belt 17 to be continuously conveyed, the position of the substrate warping degree can squeeze the conveying belt 17 in the conveying process, the conveying belt 17 is deformed under compression, the belt wheel 16 fixed on the sliding shaft 15 is driven to move, the belt wheel 16 is enabled to squeeze the compression spring 18, the belt wheel 16 is enabled to be in contact with the pressure sensor 20 on the stabilizing plate 19 to squeeze, and therefore the unqualified substrate is detected to be tilted, and the position of the unqualified substrate is detected to enter the position between the two guide plates 21 to be calibrated;
the adoption of the method has the following further advantages: therefore, the unqualified copper-clad substrate can be split after the warp degree is detected, and the position of the tilting of the copper-clad substrate is judged in the splitting process, so that the subsequent correction of the tilting position of the substrate is facilitated.
Referring to fig. 1-11, the top end of the detection platform 1 is fixedly connected with a hydraulic cylinder 22 through a mounting plate, the output end of the hydraulic cylinder 22 is connected with a pressing plate 23, a bearing plate 27 is arranged below the pressing plate 23, a plurality of through holes are formed in the bearing plate 27, a sucking disc 30 is arranged in each through hole, the bottom end of the sucking disc 30 is fixedly connected with an electric push rod 32 through a sealing plate 31, a plurality of valve ports are formed in the sealing plate 31, the inner side wall of each valve port is connected with a valve assembly, and a reinspection guide rail 40 is arranged above one side of the bearing plate 27;
further, the output end of the hydraulic cylinder 22 is fixedly connected with the top end of the pressing plate 23, a plurality of preheating holes are formed in the bottom end of the pressing plate 23, a limiting frame 24 is arranged below the pressing plate 23, the outer side wall of the limiting frame 24 is fixedly connected with a hydraulic push rod 25, the output end of the hydraulic push rod 25 is fixedly connected with a push plate 26, the inner side wall of the limiting frame 24 is in sliding connection with the side wall of the bearing plate 27, two opposite containing grooves are formed in the top end of the bearing plate 27, the inner side wall of the containing grooves is fixedly connected with a photosensitive plate 28, telescopic rods 29 are fixedly connected to corners at the bottom end of the bearing plate 27, a valve assembly consists of a one-way bucket 34, a tension spring 35 and a valve bead 36, the top end of the one-way bucket 34 is fixedly connected with a pore plate 33, the side wall of the pore plate 33 is fixedly connected with the inner side wall of a valve port on the sealing plate 31, two ends of the tension spring 35 are respectively fixedly connected with the bottom end of the pore plate 33 and the top end of the valve bead 36, the bottom end of the valve bead 36 is fixedly connected with a magnetic column 37, the outer side wall of the limiting frame 32 is fixedly connected with a ring plate 38, the top end of the ring plate 38 is fixedly connected with a plurality of electromagnetic columns 39, the electromagnetic columns 39 are in one-to-one correspondence with the plurality of magnetic columns 37, and the detection guide rails 40 are obliquely arranged above the detection platform 1;
it should be noted that: after the substrate enters the bearing plate 27 in the limit frame 24, the preheating hole at the bottom end of the bearing plate 27 can preheat the previously detected raising part, meanwhile, lamplight in the preheating hole can be projected on the substrate, screw holes and positioning holes formed at two ends of the substrate can enter the photosensitive plate 28 on the bearing plate 27 through lamplight, whether the holes are leaked or not and the situation that the holes are not formed on the substrate are detected, after the substrate is preheated, the hydraulic cylinder 22 is started to press the bearing plate 23 downwards, the substrate is flattened, after the bearing plate 27 is slowly moved downwards through the telescopic rod 29 until the pressing is finished, the substrate can be in pressing contact with the sucking disc 30 in the perforation of the bearing plate 27, at the moment, the electric push rod 32 moves upwards at the lowest retraction position, the electric push rod 32 pushes the substrate to the high position of the weight detection guide rail 40 by utilizing the sucking disc 30, meanwhile, the electric push rod 32 is pushed to a circuit connected with the electromagnetic column 39 is connected, the electromagnetic column 37 can magnetically attract the magnetic column 37 to drive the valve beads 36 to stretch the stretching spring 35, and accordingly the valve beads 36 to stretch the stretching spring 35, the valve beads can be pushed downwards to the sucking disc 30 to the position of the bearing plate 30, and the sucking force of the bearing plate 30 can be stopped when the sucking disc 30 is pushed upwards, and the sucking force of the bearing plate 30 can enter the bearing plate 30 to the position of the bearing plate 30, and the bearing plate 30 is reset to the position of the bearing plate 30;
the adoption of the method has the following further advantages: therefore, the copper-clad substrate with unqualified warpage can be placed on the conveying belt 2 for re-detection after hot pressing, so that the warpage of the copper-clad substrate used before subsequent fine processing is qualified, the waste of subsequent processing resources is reduced, and the defective rate of the produced PCB is reduced.
When the invention is used, the copper-clad substrates to be detected are sequentially put on the conveyor belt 2 for conveying, the substrates enter the equal-height plates 5 on the detection platform 1 through the auxiliary wheels 4 under the drive of the conveyor belt 2, the equal-height plates 5 keep the same height at the two ends of the substrates, the equal-height plates 5 are taken as the initial height during height measurement, meanwhile, the height measurement laser 6 is matched with the induction plate 7 to measure the highest height of the passing substrates, the length dimension of the cut substrates is fixed, thus the warping degree of the passing substrates is calculated, the warping degree of the copper-clad substrates can be measured before the follow-up fine processing of the PCB, and the situation that the warping degree of the substrates does not meet the requirement before the follow-up processing is avoided;
if the measured warp degree of the substrate is qualified, the substrate is continuously conveyed forwards along the conveying belt 2 to a subsequent processing stage, if the measured warp degree of the substrate is unqualified, the driving motor 8 drives the transition plate 12 to rotate downwards through the driving shaft, so that a bracket on the transition plate 12 is flush with the conveying belt 2, the conveyed substrate moves upwards, the driving shaft rotates to drive the driving wheel 9 to rotate, the driving wheel 9 rotates to drive the driven wheel 11 to rotate through the driving chain 10, the driven wheel 11 rotates to drive the rotating shaft 14 to rotate, the rotating shaft 14 rotates to drive the other belt pulley 16 on the sliding shaft 15 through one belt pulley 16 thereon, the substrate with the unqualified warp degree enters between the upper conveying belt 17 and the lower conveying belt 17 to be continuously conveyed, the tilting position of the substrate can squeeze the conveyor belt 17 in the conveying process, the conveyor belt 17 is pressed and deformed, and the belt pulley 16 fixed on the sliding shaft 15 is driven to move, so that the belt pulley 16 extrudes the compression spring 18, the belt pulley 16 is in contact with the pressure sensor 20 on the stabilizing plate 19 to extrude, and therefore the position of the unqualified substrate is detected to tilt, and the unqualified substrate enters the position between the two guide plates 21 to calibrate, so that the unqualified copper-clad substrate can be split after the detection of the warping degree, and the tilting position of the copper-clad substrate can be judged in the splitting process, and the follow-up correction of the tilting position of the substrate is facilitated;
after the substrate enters the bearing plate 27 in the limiting frame 24, the preheating hole at the bottom end of the bearing plate 23 can preheat the previously detected raising part, meanwhile, the lamplight in the preheating hole can be projected on the substrate, the screw holes and the positioning holes formed at the two ends of the substrate can enter the photosensitive plate 28 on the bearing plate 27 through lamplight, whether the holes are leaked or not and the situation that the holes are not formed on the substrate are detected, the hydraulic cylinder 22 is started to press the bearing plate 23 after the preheating is finished, the bearing plate 27 is pressed down to flatten the substrate, after the bearing plate 27 is pressed down through the telescopic rod 29, the substrate can be in pressing contact with the sucking disc 30 in the perforation of the bearing plate 27, at the moment, the electric push rod 32 moves upwards at the lowest retraction position, the electric push rod 32 pushes the substrate to the high position of the weight detection guide rail 40 by using the sucking disc 30, meanwhile, when the electric push rod 32 is pushed up to the height, a circuit connected with the electromagnetic column 39 is connected, the electromagnetic column 39 can magnetically attract the magnetic column 37 above, so that the magnetic column 37 drives the valve bead 36 to stretch the stretching spring 35, gaps are formed between the valve bead 36 and the unidirectional hopper 34, air can enter the unidirectional hopper 34 and enter the sucker 30 through the valve port on the sealing plate 31, suction force between the sucker 30 and a substrate disappears, the hydraulic push rod 25 is started to push the push plate 26 to push the substrate onto the rechecking guide rail 40, the substrate enters the conveyer belt 2 under the action of self gravity to carry out the warpage detection again, thus the copper-clad substrate with unqualified warpage can be put on the conveyer belt 2 to be rechecked after hot pressing, the warpage of the copper-clad substrate used before subsequent fine processing is qualified, the waste of subsequent processing resources is reduced, the defective rate of the produced PCB is reduced.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a warp detection device for PCB board production, includes two testing platform (1) and is used for carrying conveyer belt (2) of waiting to detect the base plate, its characterized in that, two testing platform (1) top all is connected with contour plate (5), two contour plate (5) outside one side is provided with height measurement laser (6) and induction plate (7) respectively, testing platform (1) top is connected with driving motor (8) through the extension board, driving motor (8) output is connected with sprocket assembly through the drive shaft, the drive shaft other end is connected with transition board (12), transition board (12) terminal surface is connected with four fixed plates (13), is connected with axis of rotation (14) and sliding shaft (15) between relative two between fixed plate (13), axis of rotation (14) and sliding shaft (15) lateral wall all are connected with band pulley (16), are connected with conveyer belt (17) between two band pulley (16), are located on (16) lateral wall is connected with firm spring (18) through two compression spring (18), be connected with firm board (19) and be located compression cylinder (19) one side is connected with hydraulic pressure sensor (20) lateral wall (20), the hydraulic cylinder (22) output end is connected with a pressing plate (23), pressing plate (23) below is provided with a bearing plate (27), a plurality of perforations are formed in the bearing plate (27), a sucker (30) is arranged in each perforation, the bottom end of each sucker (30) is fixedly connected with an electric push rod (32) through a sealing plate (31), a plurality of valve ports are formed in each sealing plate (31), the inner side wall of each valve port is connected with a valve component, a rechecking guide rail (40) is arranged above one side of the bearing plate (27), the sprocket component consists of a driving wheel (9), a transmission chain (10) and a driven wheel (11), the output end of a driving motor (8) is fixedly connected with the inner side wall of the driving wheel (9) through a driving shaft, the driving wheel (9) is connected with the driven wheel (11) through the transmission chain (10), the other end of the driving shaft is fixedly connected with the side end face of a transition plate (12), the side wall of the driven wheel (11) is fixedly connected with the end of a rotating shaft (14) positioned below, the end of each fixing plate (13) is fixedly connected with the side wall of the transition plate (12), the two end of the rotating shaft (14) are fixedly connected with the four side walls of the four sliding plates (13) respectively, the transition board (12) top is connected with deflector (21) through two relative round pins rotation, be provided with the torsional spring on the lateral wall of round pin axle, pneumatic cylinder (22) output and gland plate (23) top fixed connection, a plurality of preheating holes have been seted up to gland plate (23) bottom, gland plate (23) below is provided with spacing frame (24), spacing frame (24) lateral wall fixedly connected with hydraulic push rod (25), hydraulic push rod (25) output fixedly connected with push pedal (26), spacing frame (24) inside wall and bearing plate (27) lateral wall sliding connection, two relative storage tanks have been seted up on bearing plate (27) top, storage tank inside wall fixedly connected with photosensitive plate (28), equal fixedly connected with telescopic link (29) in bearing plate (27) bottom corner.
2. The warp detection device for PCB production according to claim 1, wherein two detection platforms (1) are respectively arranged on two sides of a conveying belt (2), bases (3) are fixedly connected to the bottom ends of the detection platforms (1), two auxiliary wheels (4) are fixedly connected to side end faces of the two detection platforms (1), and the top ends of the detection platforms (1) are fixedly connected with the bottom ends of the equal-height plates (5).
3. The warp detection device for PCB production according to claim 1, wherein the height measurement lasers (6) and the induction plates (7) correspond to each other, the top ends of the two detection platforms (1) are fixedly connected with the height measurement lasers (6) and the bottom ends of the induction plates (7) respectively, and the side walls of the driving motors (8) are fixedly connected with the top ends of the detection platforms (1) through vertical plates.
4. The warp detection device for PCB production according to claim 1, wherein the rotating shaft (14) and the outer side wall of the sliding shaft (15) are fixedly connected with the inner side walls of two pulleys (16) respectively, the outer side wall of the pulleys (16) on the sliding shaft (15) is fixedly connected with the side wall of the stabilizing plate (19) through two compression springs (18), the side wall of the stabilizing plate (19) is fixedly connected with the side wall of the pressure sensor (20), and a plurality of side walls of the stabilizing plate (19) are fixedly connected with the side walls of the fixing plates (13) on two sides through transverse rods.
5. The warping degree detection device for producing the PCB according to claim 1, wherein the valve assembly is composed of a unidirectional hopper (34), an extension spring (35) and a valve bead (36), the top end of the unidirectional hopper (34) is fixedly connected with a pore plate (33), the side wall of the pore plate (33) is fixedly connected with the inner side wall of a valve port on the sealing plate (31), and two ends of the extension spring (35) are respectively fixedly connected with the bottom end of the pore plate (33) and the top end of the valve bead (36).
6. The warp detection device for PCB production according to claim 5, wherein the bottom end of the valve bead (36) is fixedly connected with a magnetic column (37), the outer side wall of the output end of the electric push rod (32) is fixedly connected with a ring plate (38), the top end of the ring plate (38) is fixedly connected with a plurality of electromagnetic columns (39), the electromagnetic columns (39) are in one-to-one correspondence with the magnetic columns (37), and the reinspection guide rail (40) is obliquely arranged above the detection platform (1).
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