CN117309890A - PCB product appearance detection equipment and detection method thereof - Google Patents
PCB product appearance detection equipment and detection method thereof Download PDFInfo
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- CN117309890A CN117309890A CN202311598948.7A CN202311598948A CN117309890A CN 117309890 A CN117309890 A CN 117309890A CN 202311598948 A CN202311598948 A CN 202311598948A CN 117309890 A CN117309890 A CN 117309890A
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- 238000001514 detection method Methods 0.000 title claims abstract description 44
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/13—Moving of cuvettes or solid samples to or from the investigating station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Life Sciences & Earth Sciences (AREA)
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- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Signal Processing (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to the technical field of PCB detection, in particular to PCB product appearance detection equipment and a detection method thereof, comprising an equipment seat, wherein a guide rail is arranged on the equipment seat, an electromagnetic switch is arranged on the guide rail, and a camera is movably arranged on the equipment seat and used for adjusting a detection position along with the movement of a product; the repeated feeding component comprises a feeding frame for pushing products and further comprises a spiral blade which is rotatably arranged on the equipment seat and is in driving connection with the feeding frame; the stirring assembly comprises a movable block which is elastically arranged on the bottom surface of the equipment seat and is used for automatically resetting after the movement of the product is finished, and an electromagnet is arranged on the movable block; and the magnetic movable piece is arranged on the movable block in a sliding manner, a plurality of groups of matching grooves which are distributed at equal intervals and matched with the spiral blade are arranged on the magnetic movable piece, and the matching grooves are separated from the spiral blade without contact in the initial electromagnet power-off state. According to the invention, the appearance of the product can be detected without fixing the product piece, the detection period is shortened, and the detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of PCB detection, in particular to PCB product appearance detection equipment and a detection method thereof.
Background
The circuit board can be called a printed circuit board or a printed circuit board, the English name is (Printed Circuit Board) PCB, the (Flexible Printed Circuit board) FPC circuit board (the FPC circuit board is also called a flexible circuit board) is a novel product which is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility, and has the characteristics of high wiring density, light weight, thin thickness and good flexibility) and a flexible-rigid board (reeshas, soft and hard combination plate) -the birth and development of FPC and PCB and the promotion of the flexible-rigid board. Therefore, the soft and hard combined board is a circuit board which is formed by combining a flexible circuit board and a hard circuit board together according to related technological requirements through the procedures of pressing and the like and has FPC characteristics and PCB characteristics.
At present, PCB appearance detection equipment on the market gathers the detection to the PCB through image acquisition equipment, and one side detects the back with the PCB upset, detects the opposite side, because the PCB passes through clamping assembly centre gripping, so can't be fine detect whether the appearance of PCB has the defect, the PCB needs the centre gripping when detecting in addition to the upset when follow-up detection has increased the fixed step of product, makes the detection cycle duration of product increase to some extent, leads to the detection efficiency of product to reduce.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the PCB product appearance detection equipment and the detection method thereof, which can effectively solve the problems that the detection period is increased and the detection efficiency is reduced because the product needs to be additionally fixed and turned over during detection in the prior art.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a PCB product appearance detection device, comprising:
the device comprises a device seat, wherein a guide rail for guiding the product to move is arranged on the device seat, an electromagnetic switch is arranged on the guide rail, and a camera positioned at one side of the guide rail is movably arranged on the device seat and used for adjusting the detection position along with the movement of the product;
the reciprocating feeding assembly comprises a feeding frame for pushing products and a spiral blade which is rotatably arranged on the equipment seat and is in driving connection with the feeding frame;
the stirring assembly comprises a movable block which is elastically installed on the bottom surface of the equipment seat and is always pulled away from the spiral blade, the movable block is used for automatically resetting after the movement of the product is finished, and an electromagnet which is electrically connected with the electromagnetic switch is arranged on the movable block;
and the magnetic movable piece is arranged in the movable block in a sliding manner and positioned above the electromagnet, a plurality of groups of matching grooves which are distributed at equal intervals and matched with the spiral blade are arranged on the magnetic movable piece, and the matching grooves are separated from the spiral blade without contact in the initial electromagnet power-off state.
Further, the guide rail is L-shaped, and is provided with a first limiting part and a second limiting part which are elastically installed, the first limiting part is located on one side of the guide rail, which is transversely contacted with a product, the second limiting part is located on one side of the guide rail, which is longitudinally contacted with the product, and is used for preventing the product from slipping back in the conveying process, and the equipment seat is provided with two groups of reflectors which are respectively located on the upper side and the lower side of the guide rail and are used for being matched with the camera to collect image information of the product.
Further, the projection shape of the second limiting part in the vertical direction is triangular, and the second limiting part is used for enabling the product to be pushed by the feeding frame to pass through the center of the second limiting part and still be capable of being displaced for a distance under the pushing of the second limiting part in a resetting mode when the feeding frame is pulled back.
Further, the feeding frame is in sliding connection with the guide rail, a rack and a gear set matched with the rack are arranged on the feeding frame, the gear set comprises a first gear meshed with the rack and a second gear coaxial with the first gear, and further comprises a third gear coaxial with the helical blade and meshed with the second gear, and the third gear, the first gear, the second gear and the third gear are used for configuring different diameter ratios to set different path ratios, namely the longitudinal moving distance of the product is correspondingly adjusted to the transverse moving distance of the product.
Further, the movable block is slidably mounted on the equipment seat, a spring is arranged on one side, away from the spiral blade, of the movable block, and a deflector rod is arranged on one side, close to the spring, of the movable block and used for poking a product to move on the guide rail.
Further, the camera is arranged on the equipment seat through the driving column, a second guide groove which is vertically distributed is formed in the driving column, a starting switch which is electrically connected with the driving column is further arranged on the equipment seat, the starting switch is located in the spring, and the starting switch is used for closing the driving column by contacting the starting switch after the movable block resets.
Further, the equipment seat further comprises a fixed sleeve sleeved on the driving column, a first guide groove is formed in the fixed sleeve, and a clockwork spring is arranged between the fixed sleeve and the driving column and used for resetting when the driving column does not rotate.
Further, the first guide groove is an arc-shaped groove, and the angle between the top of the camera and the bottom of the camera is a, and a is smaller than 90 degrees.
The detection method of the appearance of the PCB product is applied to the detection equipment of the appearance of the PCB product, and comprises the following steps:
s1, pushing a product into one transverse end of a guide rail through a feeding frame, touching an electromagnetic switch after the product falls on the guide rail, and electrifying and magnetizing the electromagnet to push a magnetic movable piece to be in contact with a spiral blade;
s2, resetting the feeding frame and preparing to push the next group of products, and when the feeding frame is reset and moved, driving the rack to cooperate with the gear set to drive the spiral blade to rotate, wherein the spiral blade cooperates with the cooperation groove on the magnetic movable piece to integrally pull the movable block, and the product is pushed to move transversely through the deflector rod on the movable block;
s3, when the movable block moves, the starting switch is separated from the starting switch, at the moment, the starting switch is started, the driving column is controlled to rotate clockwise, and the camera moves and turns to the direction in which the feeding component is arranged, so that appearance detection is carried out on the upper part of a transversely moving product by matching with the first guide groove on the fixed sleeve and the second guide groove on the driving column;
s4, after the product passes over the electromagnetic switch, the detection of the upper part is finished, the electromagnet is powered off to enable the magnetic movable piece to be separated from the spiral blade, at the moment, under the action of the spring, the movable piece is reset to be ready for pushing the material next time, meanwhile, the extrusion starting switch is closed, the driving column rotates anticlockwise under the reset action of the spring, the camera is moved to the lower part of the product, and appearance detection is carried out on the lower part of the longitudinally moved product when the material is pushed by the material loading frame;
s5, the steps are circulated, feeding pushing of the product is automatically achieved, and appearance of two sides of the product is detected.
Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the feeding frame pushes the product to be in contact with the electromagnetic switch on the guide rail to start the electromagnet to repel or attract the magnetic movable piece, so that the position between the magnetic movable piece and the spiral blade is changed, the movable block is driven to drive the product to move when the feeding frame is reset and retracted, the appearance of the product is detected by matching with the camera, the product is not required to be fixed, the appearance of the product can be detected, the detection period is shortened, and the detection efficiency is improved;
2. the movable block moves to cooperate with the feeding frame to carry out cyclic reciprocating feeding, and the position relation of the movable block changes whether the driving column rotates or not, and the first guide groove on the fixed sleeve and the second guide groove on the driving column are matched with the spring, so that the camera can overturn and automatically carry out height adjustment, the two sides of a product can be detected, the detection range is wider, the product which is required to be detected on one side or two sides can be used, and the application range is wider.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the guide rail of the present invention;
FIG. 3 is a schematic illustration of the connection of the toggle assembly and the rack of the present invention;
FIG. 4 is a partial cross-sectional view of the magnetically active member of FIG. 3;
FIG. 5 is a schematic view of the structure of the feeding frame of the present invention;
FIG. 6 is a schematic diagram of the mounting structure of the camera and the driving column of the present invention;
FIG. 7 is a partial cross-sectional view of the connection of the drive post and the retaining sleeve of the present invention;
fig. 8 is a top view of the camera of the present invention in different positions.
Reference numerals: 1. an equipment seat; 11. a guide rail; 12. an electromagnetic switch; 13. a first limiting piece; 14. a second limiting piece; 15. a fixed sleeve; 151. a guide groove I; 16. a drive column; 161. a guide groove II; 17. a camera; 18. a clockwork spring; 19. starting a switch; 2. repeating the feeding assembly; 21. a feeding frame; 211. a rack; 212. a gear set; 22. a helical blade; 3. the assembly is stirred; 31. a movable block; 311. a deflector rod; 32. a magnetic movable member; 321. a mating groove; 33. an electromagnet; 35. and (3) a spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, 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. It will be apparent that the described embodiments are 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.
The invention is further described below with reference to examples.
Examples:
a PCB product appearance inspection apparatus, referring to fig. 1-8, comprising:
the equipment seat 1, the equipment seat 1 is provided with a guide rail 11 for guiding the movement of the product, the product can move in the guide rail 11 when pushing the product, so as to perform gradual detection, the guide rail 11 is provided with an electromagnetic switch 12, the electromagnetic switch 12 is pressed to control or release the connection relation between the movable block 31 and the spiral blade 22, the guide rail 11 is L-shaped, the guide rail 11 is provided with a first limiting piece 13 and a second limiting piece 14 which are elastically installed, the first limiting piece 13 and the second limiting piece 14 are both in sliding connection with the guide rail 11, an elastic piece is arranged between the first limiting piece 13 and the second limiting piece 14 and used for always pushing the first limiting piece 13 and the second limiting piece 14 out of the guide rail 11, the first limiting piece 13 is positioned at one side of the guide rail 11 which transversely contacts the product and is used for separating the product which transversely moves and longitudinally, so as to prevent mutual interference, the second limiting piece 14 is positioned at one side of the guide rail 11 which longitudinally contacts the product, the second limiting part 14 is triangular in projection shape in the vertical direction and is used for preventing a product from sliding back in the conveying process, when the product is pushed by the second feeding part 14 and the second feeding part 21 is pulled back, the product can still move for a distance under the pushing of the second limiting part 14, two groups of reflectors which are respectively positioned on the upper side and the lower side of the guide rail 11 are arranged on the equipment seat 1 and are used for being matched with the camera 17 to collect image information of the product, lamp beads are respectively arranged on the reflectors and are used for being clear when the camera 17 collects images, one group of reflectors is positioned above the guide rail 11 and forms 45 degrees with the product, and the other group of reflectors is positioned below the guide rail 11 and faces the driving column 16 and forms 45 degrees with the bottom of the product, and the two groups of reflectors respectively correspond to two extreme positions of the camera 17, and referring to fig. 8;
the equipment seat 1 is movably provided with a camera 17 positioned at one side of the guide rail 11 and used for adjusting the detection position along with the movement of the product;
further, the camera 17 is disposed on the device seat 1 through the driving post 16, and the driving post 16 is provided with two vertically distributed guide grooves 161 for guiding the movement of the camera 17, the device seat 1 is further provided with a start switch 19 electrically connected with the driving post 16, and the start switch 19 is located in a spring 35 for contacting the start switch 19 to close the driving post 16 after the movable block 31 is reset, and at this time, the driving post 16 is powered off.
The device seat 1 further comprises a fixing sleeve 15 sleeved on the driving column 16, a first guide groove 151 is arranged on the fixing sleeve 15, the first guide groove 151 is used for guiding the camera 17 to change in angle, after the camera 17 is located at the extreme position of the upper end of the first guide groove 151, the camera 17 faces the reciprocating feeding assembly 2, after the camera 17 is located at the extreme position of the lower end of the first guide groove 151, the camera 17 faces the second limiting part 14, a spring 18 is arranged between the fixing sleeve 15 and the driving column 16 and used for resetting when the driving column 16 does not rotate, the camera 17 is enabled to move to the extreme position of the lower end of the first guide groove 151 under the action of the spring 18 when the driving column 16 is powered off and faces the lower part of the second limiting part 14 to be aligned with a product, and when the feeding frame 21 pushes the product, image acquisition detection is carried out on the lower part of the product in the guide rail 11.
In addition, the first guide groove 151 is an arc-shaped groove, and the angle between the top of the camera 17 and the bottom of the camera 17 is a which is smaller than 90 degrees, so that the camera 17 can detect products timely.
The reciprocating feeding assembly 2 comprises a feeding frame 21 for pushing products, driving equipment such as an air cylinder, a hydraulic cylinder, an electric air cylinder and the like is arranged between the feeding frame 21 and the equipment seat 1, any power equipment capable of reciprocating can be selected, and the reciprocating feeding assembly 2 further comprises a spiral blade 22 which is rotatably arranged on the equipment seat 1 and is in driving connection with the feeding frame 21;
specifically, the feeding frame 21 is slidably connected with the guide rail 11, and the feeding frame 21 is provided with a rack 211 and a gear set 212 matched with the rack 211, the gear set 212 comprises a first gear meshed with the rack 211 and a second gear coaxial with the first gear, and further comprises a third gear coaxial with the helical blade 22 and meshed with the second gear, and the third gear, the first gear, the second gear and the third gear are used for configuring different diameter ratios to set different path ratios, namely, the longitudinal moving distance of a product corresponds to the transverse moving distance of the product, so that different gear ratios can be set according to the size of the product to adapt to different products, and the application range of the product is improved.
The stirring assembly 3, stirring assembly 3 includes the movable block 31 that elastic mounting is in equipment seat 1 bottom surface and draw to keeping away from helical blade 22 all the time, be used for promoting automatic re-setting after the product removes, make things convenient for the pushing material feeding of next time, concretely, movable block 31 slidable mounting is on equipment seat 1, and one side that movable block 31 kept away from helical blade 22 is equipped with spring 35, one side that is close to spring 35 on the movable block 31 is equipped with driving lever 311, be used for stirring the product and remove on guide rail 11, be equipped with on the movable block 31 with electromagnetic switch 12 electric connection's electro-magnet 33, contact with electromagnetic switch 12 and energize electro-magnet 33 through the product after the place, thereby connect magnetic movable part 32 and helical blade 22, make the material loading frame 21 draw movable block 31 when withdrawing, and break away from after product and electromagnetic switch 12, make magnetic movable part 32 break away from with helical blade 22, thereby realize the reseing of movable block 31, and slidable mounting is equipped with multiunit equidistance distribution and with helical blade 22 cooperation with the electro-magnet 33 on the movable part 32 of electro-magnet 32, be equipped with the electro-magnet 33 that is easy to take off with helical blade 22 initial mating with helical blade 22, the electro-magnet 33 is broken away from the time, the direction is the electromagnetic switch 33 is no change when the electromagnetic switch 33 is broken from the initial mating with helical blade 22, the time, the current is broken from the electromagnetic switch 33 is more than the complete with the electromagnetic switch 33, and the situation is no change, and the current is more than the time when the electromagnetic switch is changed and the electromagnetic switch 33 is in time when the complete with the helical blade is in the state under the condition of the state of the extrusion of the state of the helical blade, and the state of the 12, and the situation is more than the contact with the electromagnetic switch 33.
The detection method of the appearance of the PCB product is applied to the detection equipment of the appearance of the PCB product, and comprises the following steps:
s1, pushing a product into one transverse end of a guide rail 11 through a feeding frame 21, touching an electromagnetic switch 12 after the product falls on the guide rail 11, and electrifying and magnetizing an electromagnet 33 to push a magnetic movable piece 32 to be in contact with a spiral blade 22, or changing the current direction of the electromagnet 33 to enable the electromagnet 33 to repel the magnetic movable piece 32, and pushing the magnetic movable piece 32 downwards to be in contact with the spiral blade 22;
s2, resetting the feeding frame 21 and preparing to push the next group of products, when resetting and retracting the feeding frame 21, driving the rack 211 to cooperate with the gear set 212 to drive the spiral blade 22 to rotate, and because the spiral blade 22 contacts with the magnetic movable piece 32 at this time, the spiral blade 22 cooperates with the cooperation groove 321 to integrally pull the movable block 31 and stretch the spring 35, and pushing the products to transversely move through the deflector rod 311 arranged on the movable block 31;
s3, when the movable block 31 moves and is separated from the starting switch 19, the starting switch 19 starts and controls the driving column 16 to rotate clockwise, and the first guide groove 151 on the fixed sleeve 15 and the second guide groove 161 on the driving column 16 are matched, so that the camera 17 moves and turns to the direction in which the feeding assembly 2 is arranged, and the product is continuously driven to move transversely along with the continuous retraction of the feeding frame 21, and the appearance of the upper part of the product is detected by the camera 17;
s4, after the product completely passes through the electromagnetic switch 12, the upper detection is finished, the electromagnet 33 is powered off to enable the magnetic movable piece 32 to be separated from the spiral blade 22, or the current direction of the electromagnet 33 is changed to enable the magnetic movable piece 32 and the electromagnet 33 to be attracted to and separated from the spiral blade 22, at the moment, under the reset action of the spring 35, the movable block 31 is pulled to reset for the next pushing, meanwhile, the extrusion starting switch 19 is closed, the driving column 16 rotates anticlockwise under the reset action of the spring 18, the camera 17 is moved from the upper extreme position of the first guide groove 151 to the lower extreme position, namely, the camera is moved to the lower extreme position of the product and aligned with the reflector, when the feeding frame 21 pushes the product again, appearance detection is carried out on the lower part of the longitudinally moved product, the feeding frame 21 can push the two groups of products simultaneously, one end of the feeding frame 21 is short and the other end is long, the other end is used for feeding, and the long end is used for pushing the product to longitudinally move in the guide rail 11;
s5, the steps are circulated, feeding pushing of the product is automatically achieved, and appearance of two sides of the product is detected.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A PCB product appearance inspection apparatus, comprising:
the device comprises a device seat (1), wherein a guide rail (11) for guiding a product to move is arranged on the device seat (1), an electromagnetic switch (12) is arranged on the guide rail (11), and a camera (17) positioned at one side of the guide rail (11) is movably arranged on the device seat (1) and used for adjusting a detection position along with the movement of the product;
the reciprocating feeding assembly (2) comprises a feeding frame (21) for pushing products, and further comprises a spiral blade (22) which is rotatably arranged on the equipment seat (1) and is in driving connection with the feeding frame (21);
the stirring assembly (3), the stirring assembly (3) comprises a movable block (31) which is elastically installed on the bottom surface of the equipment seat (1) and is always pulled away from the helical blade (22), the movable block is used for automatically resetting after the movement of the product is pushed, and an electromagnet (33) which is electrically connected with the electromagnetic switch (12) is arranged on the movable block (31);
and the magnetic movable piece (32) is slidably arranged in the movable block (31) and is positioned above the electromagnet (33), a plurality of groups of matching grooves (321) which are distributed at equal intervals and matched with the spiral blade (22) are arranged on the magnetic movable piece (32), and the matching grooves (321) are separated from the spiral blade (22) in a non-contact state when the electromagnet (33) is in an initial power-off state.
2. The device for detecting the appearance of the PCB product according to claim 1, wherein the guide rail (11) is L-shaped, a first limiting part (13) and a second limiting part (14) which are elastically installed are arranged on the guide rail (11), the first limiting part (13) is positioned on one side of the guide rail (11) which is transversely contacted with the product, the second limiting part (14) is positioned on one side of the guide rail (11) which is longitudinally contacted with the product and is used for preventing the product from slipping back in the conveying process, and two groups of reflectors which are respectively positioned on the upper side and the lower side of the guide rail (11) are arranged on the device seat (1) and are used for being matched with a camera (17) to collect image information of the product.
3. The device for detecting the appearance of the PCB product according to claim 2, wherein the projection shape of the second limiting member (14) in the vertical direction is triangular, and the device is used for enabling the product to still displace for a certain distance under the pushing of the reset of the second limiting member (14) when the product is pushed by the feeding frame (21) to pass through the center of the second limiting member (14) and the feeding frame (21) is pulled back.
4. A PCB product appearance inspection apparatus according to claim 3, wherein the feeding frame (21) is slidably connected to the guide rail (11), and a rack (211) and a gear set (212) matched with the rack (211) are provided on the feeding frame (21), the gear set (212) includes a first gear meshed with the rack (211) and a second gear coaxial with the first gear, and further includes a third gear coaxial with the helical blade (22) and meshed with the second gear, and the third gear, the second gear, the third gear and the third gear are configured to have different diameter ratios, so as to set different path ratios, that is, the distance of the longitudinal movement of the product is correspondingly adjusted to the distance of the transverse movement of the product.
5. A PCB product appearance inspection apparatus according to claim 4, wherein the movable block (31) is slidably mounted on the apparatus base (1), and a spring (35) is provided on a side of the movable block (31) away from the spiral blade (22), and a lever (311) is provided on a side of the movable block (31) close to the spring (35) for moving the product on the guide rail (11).
6. The device for detecting the appearance of the PCB product according to claim 5, wherein the camera (17) is arranged on the device seat (1) through the driving column (16), the driving column (16) is provided with a guide groove II (161) which is vertically distributed, the device seat (1) is also provided with a starting switch (19) which is electrically connected with the driving column (16), the starting switch (19) is positioned in the spring (35), and the starting switch (19) is contacted with the starting switch (19) to close the driving column (16) after the movable block (31) is reset.
7. The device for detecting the appearance of a PCB product according to claim 6, wherein the device holder (1) further comprises a fixing sleeve (15) sleeved on the driving post (16), the fixing sleeve (15) is provided with a first guide groove (151), and a spring (18) is arranged between the fixing sleeve (15) and the driving post (16) for resetting when the driving post (16) is not rotated.
8. A PCB product appearance inspection apparatus according to claim 7, wherein the first guide groove (151) is an arc groove and the angle between the top of the camera (17) and the bottom of the camera (17) is a < 90 °.
9. A method for detecting appearance of a PCB product, applied to a device for detecting appearance of a PCB product according to claim 8, comprising the steps of:
s1, pushing a product into one transverse end of a guide rail (11) through a feeding frame (21), touching an electromagnetic switch (12) after the product falls on the guide rail (11), and electrifying and magnetizing an electromagnet (33) to push a magnetic movable part (32) to be in contact with a spiral blade (22);
s2, resetting the feeding frame (21) and preparing to push the next group of products, when the feeding frame (21) is reset and moved, driving the rack (211) to cooperate with the gear set (212) to drive the spiral blade (22) to rotate, and the spiral blade (22) cooperates with the cooperation groove (321) on the magnetic movable piece (32) to integrally pull the movable block (31), so that the product is pushed to transversely move by the deflector rod (311) on the movable block (31);
s3, when the movable block (31) moves, the movable block is separated from the starting switch (19), at the moment, the starting switch (19) is started, the driving column (16) is controlled to rotate clockwise, and the first guide groove (151) on the fixed sleeve (15) and the second guide groove (161) on the driving column (16) are matched, so that the camera (17) moves and turns to a direction in which the feeding component (2) is arranged repeatedly, and appearance detection is carried out on the upper part of a transversely moved product;
s4, after the product passes through the electromagnetic switch (12), the detection of the upper part is finished, the electromagnet (33) is powered off to enable the magnetic movable piece (32) to be separated from the spiral blade (22), at the moment, under the action of the spring (35), the movable block (31) is reset to be ready for pushing the next time, meanwhile, the extrusion starting switch (19) is closed, the driving column (16) rotates anticlockwise under the reset action of the spring (18), the camera (17) is moved to the lower part of the product, and appearance detection is carried out on the lower part of the longitudinally moved product when the feeding frame (21) pushes the material;
s5, the steps are circulated, feeding pushing of the product is automatically achieved, and appearance of two sides of the product is detected.
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| CN117309890B (en) | 2024-01-26 |
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