CN106770368B - Lighting mechanism applied to circuit board detection machine - Google Patents
Lighting mechanism applied to circuit board detection machine Download PDFInfo
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- CN106770368B CN106770368B CN201611255585.7A CN201611255585A CN106770368B CN 106770368 B CN106770368 B CN 106770368B CN 201611255585 A CN201611255585 A CN 201611255585A CN 106770368 B CN106770368 B CN 106770368B
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- lamp
- clamping
- mounting plate
- arm
- circuit board
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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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95607—Inspecting patterns on the surface of objects using a comparative method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
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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
- G01N21/8806—Specially adapted optical and illumination features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/403—Lighting for industrial, commercial, recreational or military use for machines
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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
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8812—Diffuse illumination, e.g. "sky"
- G01N2021/8816—Diffuse illumination, e.g. "sky" by using multiple sources, e.g. LEDs
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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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
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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]
Abstract
The invention relates to the technical field of circuit board detection. An illumination mechanism applied to a circuit board is arranged on a circuit board detector; the LED light source module comprises a camera mounting plate, an LED light source module and a laser module; a plurality of groups of cameras are arranged on the camera mounting plate; the light bar mounting side plate is connected with the camera mounting plate through a side plate connecting shaft; the light bars are arranged from top to bottom, the cross section of the array shape of the light bar group is in a horn shape with a downward opening, and the light sources of the light bars are aligned with a circuit board to be detected; the laser module comprises a plurality of lateral laser irradiation devices and a plurality of forward laser irradiation devices; the lateral laser irradiation devices are respectively arranged below the camera mounting plate and are arranged at the front end and the rear end of the camera; the forward laser irradiation device is arranged in the middle of the lower part of the camera mounting plate and between the plurality of groups of cameras; and the light beams emitted by the lateral laser irradiation device and the forward laser irradiation device are aligned with the circuit board to be detected.
Description
Technical Field
The invention relates to the technical field of circuit board detection, in particular to a lighting mechanism applied to a circuit board.
Background
Along with the continuous development of technology, the printed circuit board is made thinner and thinner, so that the circuit is denser and denser, and the layer number is more and more. The conventional technology is generally implemented by detecting the printed circuit board with human eyes. In the prior art, a circuit board detector is used for detecting the printed circuit board, and the principle is that the detected printed circuit board is detected to be a non-qualified part by comparing the acquired image information of the detected printed circuit board with the image information of the qualified circuit board, so that the PCB (namely the printed circuit board) is detected by the circuit board detector to be far more mature, accurate and efficient than manual testing.
In the prior art, in order to improve the detection efficiency of a circuit board, two groups of camera detection devices are generally used to collect images of the circuit board at the same time. The two groups of image pick-up detection devices are arranged on the frame, are generally arranged right above and below, and are respectively an upper image pick-up detection device and a lower image pick-up detection device. The upper image pick-up detection device and the lower image pick-up detection device are both provided with an array of cameras and auxiliary illuminating lamps, namely LED lamp bars, because the circuit board detection machine is a high-precision multi-component machine, light sources outside the machine are difficult to enter the machine, and when the circuit board is detected, photos shot by the cameras are blurred. Therefore, in the prior art, a plurality of groups of LED light bars are generally arranged on the rack so as to enhance the irradiation to the circuit board, and a clear and bright photo is shot so as to truly reflect the quality of the circuit board. However, the size of the circuit board detector can be increased by installing a plurality of groups of LED light bars, the light bars can generate heat even if being used for a long time, and light diffraction can be generated when the LED light bars are intersected, so that the color formation of a photo is affected, and the inaccurate detection result is caused. In addition, when some LED lamp strips are not bright due to reasons, the circuit board detector stops detecting the circuit board, so that production is affected, and because the camera lacks illumination of lamplight when photographing the circuit board, an unclear photo can be taken, and detection results are affected.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a lighting mechanism applied to a circuit board.
To achieve the purpose, the invention adopts the following technical scheme: an illumination mechanism applied to a circuit board is arranged on a circuit board detector; the LED light source module comprises a camera mounting plate, an LED light source module and a laser module;
a plurality of groups of cameras are arranged on the camera mounting plate; the camera is arranged in the middle of the camera mounting plate; the cameras are arranged on the camera mounting plate at equal intervals;
the LED light source module comprises two light bar installation side plates and a light bar group; a lamp strip group is fixedly arranged between the two lamp strip mounting side plates; the light bar mounting side plate is connected with the camera mounting plate through a side plate connecting shaft;
the lamp bar group comprises at least four rows of lamp bars, the number of the lamp bars in each row is not less than two, the lamp bars are arranged from top to bottom, the cross section of the array shape of the lamp bar group is in a horn shape with a downward opening, and the light source of the lamp bars is aligned with a circuit board to be detected;
the laser module comprises a plurality of lateral laser irradiation devices and a plurality of forward laser irradiation devices;
the lateral laser irradiation devices are respectively arranged below the camera mounting plate and are arranged at the front end and the rear end of the camera;
the forward laser irradiation device is arranged in the middle of the lower part of the camera mounting plate and between the plurality of groups of cameras;
and the light beams emitted by the lateral laser irradiation device and the forward laser irradiation device are aligned with the circuit board to be detected.
Preferably, a plurality of side plate supporting rods are further arranged between the light bar installation side plates.
Preferably, a view finding device is arranged at the bottom of the lighting device, the view finding device is a rectangular plate, a light inlet hole is formed in the view finding device, and the light inlet hole is a strip-shaped through hole; the longitudinal section of the view finding device is funnel-shaped; the light beam emitted by the illumination mechanism faces and is aligned with the light inlet.
Preferably, the view finding device further comprises a light shielding plate, the light shielding plate is a square long plate, and the light shielding plate is used for shielding light rays emitted by an illumination mechanism arranged on the lower frame.
Preferably, the forward laser irradiation device comprises a lamp mounting plate, a forward laser lamp and a connecting vertical rod;
the forward laser lamp is arranged on the lamp mounting plate, one end of the connecting vertical rod is connected with the lamp mounting plate, and the other end of the connecting vertical rod is connected with the camera mounting plate.
Preferably, the lateral laser irradiation device comprises a lateral laser lamp, a mounting vertical rod, a vertical arm, a connecting plate and a lamp mounting arm;
the two vertical arms are respectively a front vertical arm and a rear vertical arm; one end of the front vertical arm is arranged on one side of the bottom of the connecting plate, and one end of the rear vertical arm is arranged on the other side of the bottom of the connecting plate;
the lateral laser lamp is arranged at one end of the lamp mounting arm, and the other end of the lamp mounting arm is arranged between the front vertical arm and the rear vertical arm and is hinged with the front vertical arm and the rear vertical arm;
the connecting plate is connected with the camera mounting plate through a mounting vertical rod;
the front and rear surfaces of the other ends of the front vertical arm and the rear vertical arm are provided with vertical arm through holes; the other ends of the front vertical arm and the rear vertical arm are cut into two elastic parts from the end parts to the vertical arm through holes, elastic part threaded holes are formed in the left side surface and the right side surface of the elastic parts, and the elastic parts of the vertical arm through holes are realized through the matching of elastic part studs and the elastic part threaded holes;
the lamp mounting arm is characterized in that a rotary through hole is formed in the front side face and the rear side face of the other end of the lamp mounting arm, the rotary through hole is aligned with the vertical arm through holes of the front vertical arm and the rear vertical arm, the rotary column sequentially penetrates through the vertical arm through holes and the rotary through holes of the front vertical arm and the rear vertical arm, and the lamp mounting arm and the rotary column are mutually fixed.
Preferably, one end of the lamp mounting arm is a fixture end; the clamp end is provided with a clamping part and a free part;
the clamping part is a mounting through hole which is arranged at one end of the lamp mounting arm and penetrates through the upper surface and the lower surface of the lamp mounting arm, the lateral laser lamp is arranged in the mounting through hole, and the outlet of the lateral laser lamp light source faces downwards;
one end of the lamp mounting arm is cut into two free parts from the end part to the clamping part; the front side surface and the rear side surface of the free part are provided with first threaded through holes, and the tightness of the free part is realized through the tightness of the first stud and the first threaded through holes;
the lamp fixture further comprises an upper lamp clamping lantern ring, a lower lamp clamping lantern ring, an adjusting knob and a side mounting plate;
the upper lamp clamping lantern ring and the lower lamp clamping lantern ring have the same shape and structure;
the middle part of the lower lamp clamping lantern ring is provided with a lower clamping through hole, and the outer edge of the lower lamp clamping lantern ring is provided with a lower adjusting lug and a lower clamping lug which are symmetrical; the lower clamping lug is cut into two pieces from the end part to the lower clamping through hole; the front side surface and the rear side surface of the lower clamping lug are respectively provided with a second threaded through hole, and the tightness of the lower clamping lug is realized by matching a second stud with the second threaded through holes;
the upper lamp clamping lantern ring is arranged on the upper surface of the lamp mounting arm, the lower lamp clamping lantern ring is arranged on the lower surface of the lamp mounting arm, the upper clamping through hole and the lower clamping through hole are aligned to the clamping part, and the lateral laser lamp sequentially penetrates through the upper clamping through hole, the clamping part and the lower clamping through hole;
the side mounting plate is fixed on the lower surface of the other end of the lamp mounting arm, the side mounting plate is a concave solid plate, knob through holes are formed in the front surface and the rear surface of two vertical lugs of the side mounting plate, the lower adjusting lug of the lower lamp clamping lantern ring is arranged at a notch of the side mounting plate, and the adjusting knob penetrates through the knob through holes and is propped against the lower adjusting lug.
The invention has the beneficial effects that: the LED light source module irradiates LED light on the circuit board, so that a photo shot by the camera is clear, and in addition, when the newly added laser module is used as a supplementary light source, the irradiated brightness can be brighter. Because the LED light source module generates heat greatly, burn out easily, even when the LED light source module burns out, the effect of illumination can be undertaken to the laser module. And the laser module comprises a lateral laser lamp and a forward laser lamp, can comprehensively irradiate illumination laser on the circuit board, ensures that the shot photo is clear, and facilitates subsequent detection.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the structure of an illumination mechanism of the present invention;
FIG. 2 is a schematic view of a viewfinder according to the present invention;
FIG. 3 is a schematic view of the structure of the forward laser irradiation apparatus of the present invention;
FIG. 4 is a schematic view of a lateral laser irradiation apparatus according to the present invention;
FIG. 5 is a schematic view of a lateral laser irradiation apparatus according to the present invention;
FIG. 6 is a schematic view of the lower lamp clamping collar of the present invention;
fig. 7 is a lamp mounting arm of the present invention.
Wherein: the camera mounting board 1, the led light source module 2, the camera 11, the light bar mounting side board 21, the side board connecting shaft 22, the light bar 23, the side board support bar 24, the finder 3, the light inlet hole 31, the light shielding plate 32, the forward laser irradiation device 4, the lamp mounting board 41, the forward laser lamp 42, the connecting rod 43, the side laser irradiation device 5, the side laser lamp 51, the lamp mounting arm 52, the clamping portion 521, the free portion 522, the first screw through hole 523, the first stud 524, the rotation through hole 525, the upper lamp clamping collar 531, the lower lamp clamping collar 532, the adjusting knob 533, the side mounting board 534, the lower clamping through hole 5321, the lower adjusting lug 5322, the lower clamping lug 5323, the second screw through hole 5324, the second stud 5325, the front vertical arm 541, the rear vertical arm 542, the mounting 543, the rotation column 544, the connecting plate 545, the vertical arm through hole 5411, the tightening portion 5412, the tightening portion screw hole 5413, and the tightening portion stud 14.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
An illumination mechanism applied to a circuit board is arranged on a circuit board detector; the LED light source module comprises a camera mounting plate 1, an LED light source module 2 and a laser module;
an array of cameras 11 are arranged on the camera mounting plate 1; the camera 11 is arranged in the middle of the camera mounting plate 1; the cameras 11 are arranged on the camera mounting plate 1 at equal intervals;
the LED light source module 2 comprises two light bar installation side plates 21 and a light bar group; a lamp strip group is fixedly arranged between the two lamp strip mounting side plates 21; the light bar mounting side plate 21 is connected with the camera mounting plate 1 through a side plate connecting shaft 22;
the lamp bar group comprises at least four rows of lamp bars 23, the number of the lamp bars 23 in each row is not less than two, the lamp bars 23 are arranged from top to bottom, the cross section of the arrangement array of the lamp bar group is in a horn shape with a downward opening, and the light source of the lamp bars 23 is aligned with a circuit board to be detected;
the laser module comprises a plurality of lateral laser irradiation devices 5 and a plurality of forward laser irradiation devices 4;
the lateral laser irradiation devices 5 are respectively arranged below the camera mounting plate 1 and are arranged at the front end and the rear end of the camera 11;
the forward laser irradiation device 4 is arranged in the middle of the lower part of the camera mounting plate 1 and between the plurality of groups of cameras 11;
the light beams emitted by the lateral laser irradiation device 5 and the forward laser irradiation device 4 are aligned with the circuit board to be inspected.
The LED light source module 2 irradiates LED light on a circuit board, so that the photo taken by the camera 11 is clear, and in addition, when the newly added laser module is used as a supplementary light source, the irradiated brightness can be brighter. Because the LED light source module 2 generates heat greatly, the LED light source module 2 is easy to burn out, and even if the LED light source module 2 burns out, the laser module can take on the function of illumination. And the laser module comprises a forward laser irradiation device 4 and a lateral laser irradiation device 5, so that illumination laser can be irradiated in all directions on the circuit board, the shot photo is ensured to be clear, and the follow-up detection is convenient.
Further, a plurality of side plate supporting rods 24 are arranged between the light bar mounting side plates 21.
Because the lamp strip 23 is installed on the lamp installation side plate, the side plate supporting rods 24 are used for reinforcing and supporting the two lamp strip installation side plates 21, so that unstable installation of two ends of the lamp strip 23 is prevented.
Furthermore, a view finding device 3 is arranged at the bottom of the lighting device, the view finding device 3 is a rectangular plate, a light inlet hole 31 is formed in the rectangular plate, and the light inlet hole 31 is a strip through hole; the longitudinal section of the view finding device 3 is funnel-shaped; the light beam emitted by the illumination mechanism is directed towards and aligned with the light entrance aperture 31.
The funnel-shaped section of the view finding device 3 can play a role in shielding light, so that other brightness interference or interference of a self light source to other lighting devices is avoided.
Still further, the viewfinder 3 further includes a light shielding plate 32, where the light shielding plate 32 is a square long plate, and the light shielding plate 32 is used for shielding light emitted by the illumination mechanism disposed on the lower frame.
The function of the light shielding plate 32 is used for avoiding mutual interference of light rays and avoiding influence on shooting detection effect of the other surface of the circuit board after the light rays pass through the circuit board.
Further, the forward laser irradiation device 4 comprises a lamp mounting plate 41, a forward laser lamp 42 and a connecting vertical rod 43;
the forward laser lamp 42 is arranged on the lamp mounting plate 41, one end of the connecting vertical rod 43 is connected with the lamp mounting plate 41, and the other end of the connecting vertical rod 43 is connected with the camera mounting plate 1.
The light beam of the forward laser lamp 42 is vertically irradiated on the circuit board, and the brightness is enough, and the forward laser lamp is used as a main power irradiation lamp source, so that the light source support can be provided when the circuit board is used for detection.
Further, the lateral laser irradiation device 5 includes a lateral laser lamp 51, a mounting vertical rod 543, a vertical arm, a connecting plate 545 and a lamp mounting arm 52;
the number of the vertical arms is two, namely a front vertical arm 541 and a rear vertical arm 542; one end of the front vertical arm 541 is disposed at one side of the bottom of the connection plate 545, and one end of the rear vertical arm 542 is disposed at the other side of the bottom of the connection plate 545;
the lateral laser lamp 51 is disposed at one end of the lamp mounting arm 52, and the other end of the lamp mounting arm 52 is disposed between the front vertical arm 541 and the rear vertical arm 542 and hinged to the front vertical arm 541 and the rear vertical arm 542;
the connecting plate 545 is connected with the camera mounting plate 1 through a mounting vertical rod 543;
vertical arm through holes 5411 are provided on the front and rear surfaces of the other ends of the front and rear vertical arms 541 and 542; the other ends of the front vertical arm 541 and the rear vertical arm 542 are cut into two elastic parts 5412 from the end to the vertical arm through hole 5411, elastic part threaded holes 5413 are formed in the left and right sides of the elastic parts 5412, and the elastic parts of the vertical arm through hole 5411 are achieved through the matching of elastic part studs 5414 and the elastic part threaded holes 5413;
the front and rear sides of the other end of the lamp mounting arm 52 are provided with a rotation through hole 525, the rotation through hole 525 is aligned with the vertical arm through holes 5411 of the front vertical arm 541 and the rear vertical arm 542, the rotation column 544 sequentially passes through the vertical arm through holes 5411 and the rotation through holes 525 of the front vertical arm 541 and the rear vertical arm 542, and the lamp mounting arm 52 and the rotation column 544 are mutually fixed.
When detecting different types and specifications of printed circuit boards or debugging a circuit board detector, because the connecting plate 545 is fixed on the camera mounting plate 1, the lamp mounting arm 52 can be properly controlled to rotate relative to the front vertical arm 541 and the rear vertical arm 542, so that the light beam emitted by the lateral laser lamp 51 translates when irradiated on the printed circuit board, so as to adapt to the change of the printed circuit board, increase the detection range of the circuit board detector, make the shot photo clear and bright, and facilitate the next photo comparison.
The direction from the front vertical arm 541 to the upper lamp clamping collar 531 is from left to right, when the two elastic parts 5412 are loosened, the lamp mounting arm 52 is rotated clockwise or anticlockwise along the paper surface, at this time, the light beam emitted by the lateral laser lamp 51 is translated in the whole printed board, and when the machine is installed and debugged, the debugging plays a considerable role, so that the production requirements of different types of printed circuit boards are met. In addition, when the lateral laser lamp 51 is damaged, the fixing of the mounting vertical rod 543 and the camera mounting plate 1 is directly released, so that the replacement product can be immediately mounted on the camera mounting plate 1, the mounting is convenient, and the influence on production is avoided.
Further, one end of the lamp mounting arm 52 is a fixture end; the clamp end is provided with a clamping part 521 and a free part 522;
the clamping part 521 is a mounting through hole which is arranged at one end of the lamp mounting arm 52 and penetrates through the upper and lower surfaces of the lamp mounting arm 52, the lateral laser lamp 51 is arranged in the mounting through hole, and the light source outlet of the lateral laser lamp 51 faces downwards;
one end of the lamp mounting arm 52 is cut into two free portions 522 from the end to the clamping portion 521; the front and rear sides of the free part 522 are provided with first threaded through holes 523, and the tightness of the free part 522 is realized by the tightness of the first stud 524 and the first threaded through holes 523;
also included are an upper lamp clamping collar 531, a lower lamp clamping collar 532, an adjustment knob 533, and a side mounting plate 534;
the shape and structure of the upper lamp clamping collar 531 and the lower lamp clamping collar 532 are the same;
the middle part of the lower lamp clamping lantern ring 532 is provided with a lower clamping through hole 5321, and the outer edge of the lower lamp clamping lantern ring is provided with a lower adjusting lug 5322 and a lower clamping lug 5323 which are symmetrical; the lower clamping ear 5323 is cut in two pieces from the end to the lower clamping through hole 5321; the front side surface and the rear side surface of the lower clamping lug 5323 are respectively provided with a second threaded through hole 5324, and the tightness of the lower clamping lug 5323 is realized by matching a second stud 5325 with the second threaded through holes 5324;
the upper lamp clamping collar 531 is disposed on the upper surface of the lamp mounting arm 52, the lower lamp clamping collar 532 is disposed on the lower surface of the lamp mounting arm 52, and aligns the upper clamping through hole and the lower clamping through hole 5321 with the clamping portion 521, and the lateral laser lamp 51 sequentially passes through the upper clamping through hole, the clamping portion 521 and the lower clamping through hole 5321;
the side mounting plate 534 is fixed on the lower surface of the other end of the lamp mounting arm 52, the side mounting plate 534 is a concave solid plate, knob through holes are formed in the front and rear surfaces of two vertical lugs of the side mounting plate 534, the lower adjusting lug 5322 of the lower lamp clamping collar 532 is arranged at a notch of the side mounting plate 534, and the adjusting knob 533 is propped against the lower adjusting lug 5322 through the knob through holes.
Since the lateral laser lamp 51 has a certain service life, it is also difficult to prevent the lateral laser lamp 51 from being damaged during the inspection, and the lateral laser lamp 51 can be conveniently taken out from the mounting hole by unscrewing the first stud 524 from the first threaded hole 523, thereby releasing the free portion 522. The upper lamp clamping collar 531 to lower lamp clamping collar 532 are oriented top-to-bottom. The upper lamp clamping collar 531 clamps the lateral laser lamp 51 against falling. By rotating the adjustment knob 533, the lower adjustment lug 5322 of the lower lamp clamping collar 532 is rotated, and the lateral laser lamp 51 is rotated accordingly, since the lower lamp clamping collar 532 is already clamping the lateral laser lamp 51, and the linear laser beam emitted therefrom is rotated by a certain angle accordingly. Even if the circuit boards with different specifications are irradiated, the light beam emitted by the lateral laser lamp 51 can adapt to the change of the printed circuit board by adjusting the adjusting knob 533, so that the camera 11 can conveniently discharge clear pictures. In addition, when the lateral laser lamp 51 is damaged and needs to be replaced, the lateral laser lamp 51 is then removed by releasing the upper clamping lugs 5323 of the upper lamp clamping collar 531 and the lower clamping lugs 5323 of the lower lamp clamping collar 532. The maintenance process is convenient and quick and the damage to the lateral laser lamp 51 can be effectively and timely handled.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (5)
1. An illumination mechanism applied to a circuit board is arranged on a circuit board detector; the LED light source module comprises a camera mounting plate, an LED light source module and a laser module;
a plurality of groups of cameras are arranged on the camera mounting plate; the camera is arranged in the middle of the camera mounting plate; the cameras are arranged on the camera mounting plate at equal intervals;
the LED light source module comprises two light bar installation side plates and a light bar group; a lamp strip group is fixedly arranged between the two lamp strip mounting side plates; the light bar mounting side plate is connected with the camera mounting plate through a side plate connecting shaft;
the lamp bar group comprises at least four rows of lamp bars, the number of the lamp bars in each row is not less than two, the lamp bars are arranged from top to bottom, the cross section of the array shape of the lamp bar group is in a horn shape with a downward opening, and the light source of the lamp bars is aligned with a circuit board to be detected;
the method is characterized in that: the laser module comprises a plurality of lateral laser irradiation devices and a plurality of forward laser irradiation devices;
the lateral laser irradiation devices are respectively arranged below the camera mounting plate and are arranged at the front end and the rear end of the camera;
the forward laser irradiation device is arranged in the middle of the lower part of the camera mounting plate and between the plurality of groups of cameras;
the light beams emitted by the lateral laser irradiation device and the forward laser irradiation device are aligned to the circuit board to be detected;
the lateral laser irradiation device comprises a lateral laser lamp, a mounting vertical rod, a vertical arm, a connecting plate and a lamp mounting arm;
the two vertical arms are respectively a front vertical arm and a rear vertical arm; one end of the front vertical arm is arranged on one side of the bottom of the connecting plate, and one end of the rear vertical arm is arranged on the other side of the bottom of the connecting plate;
the lateral laser lamp is arranged at one end of the lamp mounting arm, and the other end of the lamp mounting arm is arranged between the front vertical arm and the rear vertical arm and is hinged with the front vertical arm and the rear vertical arm;
the connecting plate is connected with the camera mounting plate through a mounting vertical rod;
the front and rear surfaces of the other ends of the front vertical arm and the rear vertical arm are provided with vertical arm through holes; the other ends of the front vertical arm and the rear vertical arm are cut into two elastic parts from the end parts to the vertical arm through holes, elastic part threaded holes are formed in the left side surface and the right side surface of the elastic parts, and the elastic parts of the vertical arm through holes are realized through the matching of elastic part studs and the elastic part threaded holes;
the lamp mounting arm and the rotating column are mutually fixed;
one end of the lamp mounting arm is a clamp end; the clamp end is provided with a clamping part and a free part;
the clamping part is a mounting through hole which is arranged at one end of the lamp mounting arm and penetrates through the upper surface and the lower surface of the lamp mounting arm, the lateral laser lamp is arranged in the mounting through hole, and the outlet of the lateral laser lamp light source faces downwards;
one end of the lamp mounting arm is cut into two free parts from the end part to the clamping part; the front side surface and the rear side surface of the free part are provided with first threaded through holes, and the tightness of the free part is realized through the tightness of the first stud and the first threaded through holes;
the lamp fixture further comprises an upper lamp clamping lantern ring, a lower lamp clamping lantern ring, an adjusting knob and a side mounting plate;
the upper lamp clamping lantern ring and the lower lamp clamping lantern ring have the same shape and structure;
the middle part of the lower lamp clamping lantern ring is provided with a lower clamping through hole, and the outer edge of the lower lamp clamping lantern ring is provided with a lower adjusting lug and a lower clamping lug which are symmetrical; the lower clamping lug is cut into two pieces from the end part to the lower clamping through hole; the front side surface and the rear side surface of the lower clamping lug are respectively provided with a second threaded through hole, and the tightness of the lower clamping lug is realized by matching a second stud with the second threaded through holes;
the upper lamp clamping lantern ring is arranged on the upper surface of the lamp mounting arm, the lower lamp clamping lantern ring is arranged on the lower surface of the lamp mounting arm, the upper clamping through hole and the lower clamping through hole are aligned to the clamping part, and the lateral laser lamp sequentially penetrates through the upper clamping through hole, the clamping part and the lower clamping through hole;
the side mounting plate is fixed on the lower surface of the other end of the lamp mounting arm, the side mounting plate is a concave solid plate, knob through holes are formed in the front surface and the rear surface of two vertical lugs of the side mounting plate, the lower adjusting lug of the lower lamp clamping lantern ring is arranged at a notch of the side mounting plate, and the adjusting knob penetrates through the knob through holes and is propped against the lower adjusting lug.
2. The lighting mechanism for a circuit board of claim 1, wherein: a plurality of side plate supporting rods are further arranged between the light bar installation side plates.
3. The lighting mechanism for a circuit board of claim 1, wherein: the bottom of the lighting mechanism is provided with a view finding device, the view finding device is a rectangular plate, a light inlet hole is formed in the view finding device, and the light inlet hole is a strip-shaped through hole; the longitudinal section of the view finding device is funnel-shaped; the light beam emitted by the illumination mechanism faces and is aligned with the light inlet.
4. A lighting mechanism for a circuit board as recited in claim 3, wherein: the view finding device further comprises a light shielding plate, the light shielding plate is a square long plate, and the light shielding plate is used for shielding light rays emitted by an illumination mechanism arranged on the lower frame.
5. The lighting mechanism for a circuit board of claim 1, wherein: the forward laser irradiation device comprises a lamp mounting plate, a forward laser lamp and a connecting vertical rod;
the forward laser lamp is arranged on the lamp mounting plate, one end of the connecting vertical rod is connected with the lamp mounting plate, and the other end of the connecting vertical rod is connected with the camera mounting plate.
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