CN114562501A - Planar light pipe focusing machine - Google Patents

Planar light pipe focusing machine Download PDF

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Publication number
CN114562501A
CN114562501A CN202210221948.4A CN202210221948A CN114562501A CN 114562501 A CN114562501 A CN 114562501A CN 202210221948 A CN202210221948 A CN 202210221948A CN 114562501 A CN114562501 A CN 114562501A
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CN
China
Prior art keywords
laser diode
pentaprism
light
glass tube
seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210221948.4A
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Chinese (zh)
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CN114562501B (en
Inventor
杨小儿
逯伟
周永
周海军
秦思毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Freibo Automation Equipment Co ltd
Original Assignee
Shenzhen Freibo Automation Equipment Co ltd
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Publication date
Application filed by Shenzhen Freibo Automation Equipment Co ltd filed Critical Shenzhen Freibo Automation Equipment Co ltd
Priority to CN202210221948.4A priority Critical patent/CN114562501B/en
Publication of CN114562501A publication Critical patent/CN114562501A/en
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Publication of CN114562501B publication Critical patent/CN114562501B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B11/00Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
    • F16B11/006Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00Gripping heads and other end effectors
    • B25J15/06Gripping heads and other end effectors with vacuum or magnetic holding means
    • B25J15/0616Gripping heads and other end effectors with vacuum or magnetic holding means with vacuum
    • B25J15/065Gripping heads and other end effectors with vacuum or magnetic holding means with vacuum provided with separating means for releasing the gripped object after suction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74Feeding, transfer, or discharging devices of particular kinds or types
    • B65G47/90Devices for picking-up and depositing articles or materials
    • B65G47/91Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/05Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
    • B65G49/06Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for fragile sheets, e.g. glass
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Laser Beam Processing (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

The invention discloses a plane light pipe focusing machine, which comprises a rack, a feeding and discharging mechanism, a material transfer mechanism, an assembly calibration mechanism and a control circuit, wherein the material transfer mechanism takes out a laser diode and a conical glass pipe from the feeding and discharging mechanism, transfers the laser diode and the conical glass pipe to the assembly calibration mechanism, assembles and calibrates the laser diode and the conical glass pipe; and the assembled and calibrated finished product of the plane light pipe is sent back to the feeding and discharging mechanism by the material transfer mechanism. The plane light pipe focusing machine has high automation degree and high adjustment efficiency for assembling and calibrating the plane light pipe.

Description

Planar light pipe focusing machine
[ technical field ]
The invention relates to a plane light pipe assembling device, in particular to a plane light pipe focusing machine.
[ background art ]
The planar light pipe is one kind of laser light pipe and may be used in level measuring instrument to measure the level of horizontal plane. The structure of the planar light pipe is shown in fig. 15 and 16, and is formed by bonding a laser diode 80 and a tapered glass tube 90 by using a UV adhesive 93, wherein the laser diode 80 includes a light emitting diode 81 and a cylindrical aluminum base 82, and the tapered glass tube 90 includes a tapered reflector 91 and a glass tube 92. When the planar light pipe is in operation, the conical reflective mirror 91 reflects the light emitted from the light emitting diode 81 into planar light to be emitted outwards. The assembled planar lightpipe requires that the light path is on the plane orthogonal to the axis of the planar lightpipe and should not be inclined, and the light intensity or power emitted by the planar lightpipe along different directions is consistent. In order to meet the requirements, the optical path of the planar light pipe needs to be measured and adjusted during assembly, and the traditional adjustment method is manual adjustment, so that the production efficiency is low.
[ summary of the invention ]
The invention aims to provide a planar lightpipe focusing machine with high adjustment efficiency.
In order to solve the technical problems, the technical scheme adopted by the invention is that the plane light tube focusing machine comprises a rack, a feeding and discharging mechanism, a material transfer mechanism, an assembly calibration mechanism and a control circuit, wherein the material transfer mechanism takes out a laser diode and a conical glass tube from the feeding and discharging mechanism, transfers the laser diode and the conical glass tube to the assembly calibration mechanism, assembles and calibrates the laser diode and the conical glass tube; and the assembled and calibrated finished product of the plane light pipe is sent back to the feeding and discharging mechanism by the material transfer mechanism.
The plane light pipe focusing machine comprises a frame, a base plate and a focusing frame, wherein the base plate is arranged at the top of the base; the feeding and discharging mechanism comprises a conical glass tube clamp and a laser diode clamp, and the conical glass tube clamp and the laser diode clamp are arranged above the bedplate; the material transfer mechanism is arranged on the bedplate and comprises a longitudinal and transverse movement mechanism and a manipulator; the middle portion of the bedplate comprises a through hole, the lower portion of the assembly and calibration mechanism is arranged in the machine base and supported by the machine base, and the upper portion of the assembly and calibration mechanism penetrates through the through hole of the bedplate.
In the planar light pipe focusing machine, the longitudinal and transverse movement mechanism comprises an X-axis movement mechanism and a Y-axis movement mechanism, the X-axis movement mechanism comprises a first linear module, and the Y-axis movement mechanism comprises two second linear modules; the two second linear modules are arranged at two ends of the bedplate along the X-axis direction, and the axes of the second linear modules are arranged along the Y-axis direction; the axis of the first linear module is arranged along the X-axis direction, and two ends of the first linear module are respectively fixed on the sliding blocks of the two second linear modules; the manipulator is installed on the slider of first straight line module.
The manipulator of the plane optical tube focusing machine comprises a vertical plate, a connecting plate, a first servo motor, two sets of first linear guide rail pairs, a first screw-nut pair, a synchronous belt mechanism, a rotating table, a clamping cylinder and a suction nozzle, wherein the vertical plate is arranged on a longitudinal and transverse movement mechanism; the guide rails of the two sets of first linear guide rail pairs are vertically fixed on the vertical plate; a screw rod of the first screw rod nut pair is vertically arranged on the vertical plate; the first servo motor is arranged between the guide rails of the two sets of first linear guide rail pairs and driven by a synchronous belt mechanism; the connecting plate is fixed on the sliding blocks of the two sets of first linear guide rail pairs and is connected with the nuts of the first screw rod nut pair, and the rotating table driven by the second servo motor is fixed at the lower part of the connecting plate; the suction nozzle is vertically fixed at the lower part of the rotating platform and is coaxial with the rotating axis of the rotating platform; the clamping cylinder is fixed at the lower end of the rotating platform, and the plane where the clamping cylinder is located is orthogonal to the rotating axis of the rotating platform.
The plane light pipe focusing machine comprises a machine cover and a machine cover, wherein the machine cover covers the upper part of a machine frame, a feeding and discharging mechanism, a longitudinal and transverse movement mechanism, a mechanical arm and an assembling and calibrating mechanism are arranged below the machine cover, and the machine cover comprises a protective door; the feeding and discharging mechanism comprises a bottom plate, a protective door opening and closing mechanism, a support, three opposite emission type photoelectric sensors and a first limited reflection type miniature photoelectric sensor, the bottom plate is fixed on the top surface of the bedplate, and the support is fixed on the bottom plate and positioned behind the protective door; the top surface of the support comprises a conical glass tube clamp positioning groove and a laser diode clamp positioning groove, the conical glass tube clamp is placed in the conical glass tube clamp positioning groove, and the laser diode clamp is placed in the laser diode clamp positioning groove; the protective door opening and closing mechanism comprises a second linear guide rail pair and a first air cylinder; the guide rail of the second linear guide rail pair is fixed on the bottom plate and is parallel to the protective door; the lower part of the protective door is fixed on a sliding block of the second linear guide rail pair, the first air cylinder is fixed on the bottom plate and is parallel to the second linear guide rail pair, and the protective door is connected with a piston rod of the first air cylinder; the three pairs of correlation photoelectric sensors are arranged above the support and are respectively used for detecting the in-place of the conical glass tube, the laser diode and the assembled finished product; the first limited reflection micro photoelectric sensor is arranged at the bottom of the positioning groove of the laser diode clamp and used for detecting the in-place of the laser diode clamp.
The assembling and calibrating mechanism of the planar lightpipe focusing machine comprises an assembling mechanism and a calibrating mechanism, wherein the calibrating mechanism comprises a bracket, N collimators, N pentaprisms, and N is more than or equal to 3; the N collimators are vertically fixed on the bracket and uniformly distributed along the circumferential direction of the bracket, and the bracket is supported by the machine base; the N pentaprisms are fixed on the bracket and are positioned right above the corresponding collimators; the light outlet of the pentaprism faces the light inlet of the corresponding collimator, and the signal output end of the collimator is connected with the control circuit; the assembling mechanism comprises an installation frame, a lifting mechanism and a light guide plate, and the installation frame is vertically fixed at the central part of the bracket; the lifting mechanism is positioned in the mounting frame and is coaxial with the central axis of the support, and the top of the lifting mechanism comprises a seat hole of the laser diode clamp; the light guide plate is fixed at the top of the mounting frame, is positioned above the seat hole of the laser diode clamp and comprises a central hole and N radial light guide holes, the inlets of the radial light guide holes are communicated with the central hole, and the outlets of the radial light guide holes face to the light inlet of the corresponding pentaprism; the light guide plate comprises a plurality of UV lamps, and the UV lamps are arranged on the inner wall of the central hole of the light guide plate and are uniformly distributed along the circumferential direction of the central hole; the laser diode clamp comprises a power supply circuit of the laser diode, and when the laser diode clamp is located in a seat hole of the laser diode clamp, the power supply circuit is connected with a power supply of the laser diode.
In the planar lightpipe focusing machine, N is 8, the calibration mechanism includes two cameras and 4 power probes, and signal output ends of the cameras and signal output ends of the 4 power probes are respectively connected to the control circuit; the pentaprism comprises a pentaprism body and a pentaprism seat, the pentaprism body is arranged in the pentaprism seat, and the pentaprism seat comprises the pentaprism light inlet and the pentaprism light outlet; the pentaprism light inlet is positioned at the front part of the pentaprism seat, and the pentaprism light outlet is positioned at the bottom of the pentaprism seat; the support comprises a base, an annular top plate and 8 stand columns, the top plate is fixed at the top ends of the 8 stand columns, the lower ends of the 8 stand columns are connected with the base, and the base is supported by the base; the top plate comprises 8 light through holes, the light outlet of the pentaprism faces to the corresponding light through holes, and the pentaprism seat is arranged on the top plate and is positioned above the light through holes; the rear part of the pentaprism seat comprises a light transmission hole, the two cameras and the 4 power probes are respectively arranged at the rear parts of the 8 pentaprism seats, and the corresponding central angle between the two cameras is 90 degrees; the corresponding central angle between adjacent power probes is 90 °.
The mounting rack of the planar lightpipe focusing machine comprises 4 vertical plates and a motor plate. The 4 vertical plates are uniformly distributed along the circumferential direction of the mounting rack, the upper ends of the vertical plates are connected with the light guide plate, and the lower ends of the vertical plates are connected with the motor plate; the lifting mechanism comprises a third servo motor, a second screw rod nut pair, two sets of third linear guide rail pairs and a lifting platform; the guide rails of the two sets of third linear guide rail pairs are respectively fixed on the inner sides of the two opposite vertical plates, and the sliding blocks of the two sets of third linear guide rail pairs are respectively fixed on two sides of the lifting platform; the lower end of a screw rod of the second screw rod nut pair penetrates through the motor plate to be connected with a third servo motor arranged below the motor plate, and a nut of the second screw rod nut pair is arranged at the lower part of the lifting platform; the top plate of the lifting platform comprises the laser diode clamp seat hole.
The working process of the planar light pipe focusing machine comprises the following steps:
901) an operator puts a laser diode into a laser diode clamp and puts a conical glass tube into a conical glass tube clamp;
902) the vertical and horizontal movement mechanism drives the mechanical arm to move above a support of the feeding and discharging mechanism, a clamping cylinder of the mechanical arm clamps the laser diode clamp, and a suction nozzle of the mechanical arm sucks the conical glass tube;
903) the vertical and horizontal movement mechanism drives the manipulator to move above the assembly and calibration mechanism, and a lifting platform of the assembly mechanism is positioned at the lower end in the vertical direction; the manipulator firstly puts the laser diode clamp with the laser diode into a laser diode clamp seat hole of a top plate of an assembly mechanism lifting platform from the side surface of an assembly mechanism mounting frame and then withdraws, and the laser diode is electrified to emit light; starting a lifting mechanism to lift the laser diode clamp to the upper end in the vertical direction;
904) a suction nozzle of the manipulator sucks the conical glass tube to move right above the light guide plate of the assembly mechanism and then moves downwards, the conical glass tube is placed on the top surface of the laser diode, and the conical glass tube is positioned in a central hole of the light guide plate;
905) the light emitted by the laser diode is irradiated on a conical reflector of the conical glass tube and is reflected by the conical reflector to be diffused in a plane; the plane light emitted by the conical glass tube passes through the radial light guide holes of the light guide plate to form N light beams, the N light beams pass through the light inlets of the N pentaprisms to irradiate onto the bodies of the N pentaprisms, and the N pentaprism bodies respectively refract the incident light downwards and irradiate the incident light to the light inlets of the N collimators;
906) the collimator sends the obtained collimation data to the control circuit, the control circuit controls the transverse movement mechanism to drive the conical glass tube to horizontally displace, the control circuit controls the rotary table of the manipulator to drive the conical glass tube to rotate through the suction nozzle, when the N collimators send collimation signals to the control circuit, the rotary table stops rotating, the suction nozzle breaks vacuum, and the manipulator is lifted;
907) curing the bonding glue between the tapered glass tube and the laser diode by the plurality of UV lamps on the light guide plate, and assembling the tapered glass tube and the laser diode into a finished product;
908) starting the lifting mechanism, and descending the laser diode clamp to the lower end in the vertical direction; a chuck of the manipulator clamping cylinder enters from the side surface of the assembling mechanism mounting frame, clamps the laser diode clamp with the finished product and takes out the laser diode clamp from the assembling mechanism mounting frame;
909) the longitudinal and transverse movement mechanism drives the mechanical arm to move above the feeding and discharging mechanism, and the laser diode clamp with the finished product is placed on the feeding and discharging mechanism; the operator takes the finished product away, places a new laser diode into the laser diode clamp, places a new tapered glass tube into the tapered glass tube clamp, and begins a new work cycle.
In the planar lightpipe focusing machine, N is 8, the calibration mechanism includes two cameras and 4 power probes, and signal output ends of the cameras and signal output ends of the 4 power probes are respectively connected to the control circuit; the pentaprism comprises a pentaprism body and a pentaprism seat, the pentaprism body is arranged in the pentaprism seat, and the pentaprism seat comprises the pentaprism light inlet and the pentaprism light outlet; the pentaprism light inlet is positioned at the front part of the pentaprism seat, and the pentaprism light outlet is positioned at the bottom of the pentaprism seat; the support comprises a base, an annular top plate and 8 stand columns, the top plate is fixed at the top ends of the 8 stand columns, the lower ends of the 8 stand columns are connected with the base, and the base is supported by the base; the top plate comprises 8 light through holes, the light outlet of the pentaprism faces to the corresponding light through holes, and the pentaprism seat is arranged on the top plate and is positioned above the light through holes; the rear part of the pentaprism seat comprises a light transmission hole, the two cameras and the 4 power probes are respectively arranged at the rear parts of the 8 pentaprism seats, and the corresponding central angle between the two cameras is 90 degrees; the corresponding central angle between the adjacent power probes is 90 degrees; the working process of the plane light pipe focusing machine comprises the primary adjusting and correcting steps: before step 906, the two cameras and the 4 power probes respectively obtain the light intensity of the light beam from the light-transmitting holes at the rear part of the pentaprism seat, the captured light intensity signal is sent to the control circuit for preliminary adjustment, and the control circuit controls the longitudinal and transverse movement mechanism to move the conical glass tube along the X-axis direction and/or the Y-axis direction, so that the power readings of the 4 power probes are consistent.
The plane light pipe focusing machine has high automation degree and high adjustment efficiency for assembling and calibrating the plane light pipe.
[ description of the drawings ]
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a front view of a planar lightpipe focusing machine according to an embodiment of the present invention.
FIG. 2 is a top view of a planar lightpipe focusing machine according to an embodiment of the present invention.
FIG. 3 is a perspective view of a planar lightpipe focusing machine according to an embodiment of the present invention.
Fig. 4 is a perspective view of the loading and unloading mechanism according to the embodiment of the invention.
Fig. 5 is a front view of a robot according to an embodiment of the present invention.
Fig. 6 is a perspective view of a robot according to an embodiment of the present invention.
FIG. 7 is a front view of an assembled alignment mechanism according to an embodiment of the present invention.
FIG. 8 is a top view of an assembled alignment mechanism according to an embodiment of the present invention.
Fig. 9 is a sectional view a-a in fig. 8.
Fig. 10 is a sectional view B-B in fig. 7.
FIG. 11 is a perspective view of an assembled alignment mechanism according to an embodiment of the present invention.
FIG. 12 is a perspective view of an assembly mechanism according to an embodiment of the present invention.
Fig. 13 is a perspective view of the lifting mechanism according to the embodiment of the present invention.
Fig. 14 is a perspective view of an elevating platform according to an embodiment of the present invention.
FIG. 15 is a front view of a planar lightpipe according to an embodiment of the present invention.
Fig. 16 is a cross-sectional view taken along line C-C of fig. 15.
[ detailed description of the invention ]
The structure and principle of the planar light pipe focusing machine according to the embodiment of the invention are shown in fig. 1 to 14, and the planar light pipe focusing machine comprises a frame 10, a hood (not shown in the figure), a loading and unloading mechanism 20, a material transfer mechanism, an assembly calibration mechanism and a control circuit. The assembly and calibration mechanism comprises an assembly mechanism 50 and a calibration mechanism 60, and the material transfer mechanism comprises a longitudinal and transverse movement mechanism 30 and a mechanical arm 40. The control circuit comprises an industrial personal computer which is used as a main body for running a test program.
The frame 10 includes a base 11 and a platen 12, the platen 12 being disposed on top of the base 11. The hood is covered above the frame 10, and the loading and unloading mechanism 20, the longitudinal and transverse movement mechanism 30, the manipulator 40 and the assembly and calibration mechanism are arranged below the hood, and the hood comprises a protective door 71 for loading and unloading.
The platen 12 has a through hole 121 in the middle thereof, and the lower part of the assembly alignment mechanism is disposed in the housing 11 and supported by the housing 11, and the upper part of the assembly alignment mechanism passes through the through hole 121 of the platen 12 and is located above the platen 12.
The loading and unloading mechanism 20 comprises a bottom plate 21, a conical glass tube clamp 22, a laser diode clamp 23, a protective door opening and closing mechanism 24, a support 25, three pairs of correlation type photoelectric sensors and a first limited reflection micro photoelectric sensor 26. The base plate 21 is fixed to the top surface of the platen 12, and the holder 25 is fixed above the base plate 21 and behind the protection door 71. The top surface of the support 25 has a tapered glass tube holder positioning groove 251 in which the tapered glass tube holder 22 is placed, and a laser diode holder positioning groove 252 in which the laser diode holder 23 is placed.
The guard door opening/closing mechanism 24 includes a second linear guide pair 241 and a first cylinder 242. The guide rail of the second linear guide pair 241 is fixed to the bottom plate 21 in parallel with the moving direction of the guard door 71. The lower part of the protective door 71 is fixed on the slide block of the second linear guide rail pair 241, the first air cylinder 242 is fixed on the bottom plate 21 and is positioned in the cavity at the lower part of the support 25 and is parallel to the guide rail of the second linear guide rail pair 241, and the protective door 71 is connected with the piston rod of the first air cylinder 242.
Three pairs of correlation photoelectric sensors are arranged above the support 25, a first correlation photoelectric sensor 27 is used for detecting the in-place of the conical glass tube, a second correlation photoelectric sensor 28 is used for detecting the in-place of the laser diode, and a third correlation photoelectric sensor 29 is used for detecting the in-place of the finished product after being installed. The first defined reflective micro photosensor 26 is mounted at the bottom of the positioning groove 252 of the laser diode holder for in-position detection of the laser diode holder 23. The signal outputs of the three pairs of correlation photosensors (27, 28, and 29) and the signal output of the first definite reflection micro photosensor 26 are connected to a control circuit, respectively.
The longitudinal and transverse movement mechanism 30 includes an X-axis movement mechanism including a first linear module 31 and a Y-axis movement mechanism including two second linear modules 32. Two second linear modules 32 are arranged at both ends of the platen 12 in the X-axis direction, and the axes of the second linear modules 32 are arranged in the Y-axis direction. The axis of the first linear module 31 is arranged along the X-axis direction, and both ends of the first linear module 31 are respectively fixed on the sliders of the two second linear modules 32. The robot 40 is mounted on the slide 311 of the first linear module 31.
The manipulator 40 comprises a vertical plate 41, an L-shaped connecting plate 42, a first servo motor 43, two sets of first linear guide rail pairs 44, a first screw nut pair 45, a synchronous belt mechanism 46, a rotating table 47, a clamping cylinder 48 and a suction nozzle 49, wherein the vertical plate 41 is installed on a sliding block 311 of the first linear module 31. The guide rails 441 of the two sets of first linear guide rail pairs 44 are vertically fixed to the vertical plates 41. The spindle 451 of the first spindle-nut pair 45 is mounted vertically on the riser 41. Is arranged between the guide rails 441 of the two sets of first linear guide rail pairs 44 and is driven by a first servo motor 43 through a timing belt mechanism 46. An L-shaped connecting plate 42 is fixed to the sliders 442 of the two sets of first linear guide rail pairs 44, is connected to the nuts 452 of the first lead screw nut pair 45, and a rotary table 47 driven by a second servo motor 471 is fixed to the lower portion of the connecting plate 42. The suction nozzle 49 is vertically fixed to a rotary portion at a lower portion of the rotary table 47 coaxially with the rotation axis of the rotary table 47. The clamp cylinder 48 is fixed to the lower end of the rotating portion of the rotating table 47, and the plane on which the clamp cylinder 48 is located is orthogonal to the rotation axis of the rotating table 47. The rotating part of the rotating table 47 is provided with a U-shaped photosensor 472, and the rotating part of the rotating table 47 is provided with a light blocking plate 473 of the U-shaped photosensor 472. The signal output terminal of the U-shaped photosensor 472 is connected to a control circuit for controlling the rotation angle of the rotary table 47 and the clamping cylinder 48. The U-shaped photoelectric sensor 411 and the U-shaped photoelectric sensor 412 are attached to the vertical plate 41 and located at the upper and lower ends of the stroke of the rotating table 47. The signal output ends of the U-shaped photosensors 411 and 412 are connected to a control circuit for controlling the stroke of the rotary table 47.
The alignment mechanism 60 includes a carriage 60A, 8 collimators 61, 8 pentaprisms 62, two cameras 63, and 4 power probes 64. And the signal output end of the collimator 61, the signal output end of the camera 63 and the signal output ends of the 4 power probes 64 are respectively connected with a control circuit and are in communication connection with an industrial personal computer.
The bracket 60A comprises a marble base 65, an annular top plate 66, a bottom plate 67 and 8 upright posts 68, wherein the 8 upright posts 68 are uniformly distributed along the circumferential direction of the bracket 60A. The top plate 66 is fixed on the top ends of the 8 upright posts 68, the lower ends of the 8 upright posts are fixed on the bottom plate 67, the bottom plate 67 is fixed on the marble base 65, and the marble base 65 is supported by the machine base 11. 8 light through holes 661 are evenly distributed on the annular top plate 66 along the circumferential direction,
the pentaprism 62 includes a pentaprism body 621 and a pentaprism base 622, the pentaprism body 621 is installed in the pentaprism base 622, and the pentaprism base 622 includes a pentaprism light inlet 623 and a pentaprism light outlet 624. The pentaprism light inlet 623 is located at the front of the pentaprism housing 622, and the pentaprism light outlet 624 is located at the bottom of the pentaprism housing 622. The pentaprism base 622 is mounted on the top plate 66 above the light-passing holes 661, and the light-exiting port 624 of the pentaprism 62 faces the corresponding light-passing hole 661.
The 8 collimators 61 are vertically fixed on the 8 columns 68 of the bracket 60A, and are uniformly distributed along the circumference of the bracket 60A, the pentaprism seat 622 is located right above the corresponding collimator 61, and the light outlet 624 of the pentaprism 62 faces the light inlet 611 of the corresponding collimator 61.
The rear part of the pentaprism seat 622 is provided with a light transmission hole 625, the two cameras 63 and the 4 power probes 64 are respectively arranged at the rear parts of the 8 pentaprism seats 622, the corresponding central angle between the two cameras 63 is 90 degrees and is uniformly distributed along the circumferential direction, and the corresponding central angle between the adjacent power probes 64 is 90 degrees.
The assembling mechanism 50 includes a mounting frame 50A, a lifting mechanism 50B, and a light guide plate 51, and the mounting frame 50A is vertically fixed to a central portion of the bracket 60A. The lifting mechanism 50B is located in the mounting frame 50A and is coaxial with the central axis of the support 60A, the light guide plate 51 is fixed at the top end of the mounting frame 50A and is located above the laser diode clamp seat hole 611, the light guide plate 51 is provided with a central hole 511 and 8 radial light guide holes 512, the inlets of the radial light guide holes 512 are communicated with the central hole 511, and the outlets of the radial light guide holes 512 face the light inlet 623 corresponding to the pentaprism. The light guide plate 51 includes 4 UV lamps 513, and the 4 UV lamps 513 are installed on an inner wall of the central hole 511 of the light guide plate, and are uniformly distributed along a circumferential direction of the central hole 511.
The mounting bracket 50A includes 4 vertical plates 52 and a motor plate 53. The 4 vertical plates 52 are uniformly distributed along the circumference of the mounting frame 50A, the upper ends of the vertical plates are connected with the light guide plate 51, and the lower ends of the vertical plates are connected with the motor plate 53. The lifting mechanism 50B comprises a third servo motor 54, a second screw nut pair 55, two sets of third linear guide rail pairs 56 and a hollow lifting platform 57. The guide rails 561 of the two sets of third linear guide rail pairs 56 are respectively fixed on the inner sides of the two opposite vertical plates 52A, and the sliders 562 of the two sets of third linear guide rail pairs 56 are respectively fixed on both sides of the lifting platform 57. The lower end of a screw 551 of the second screw-nut pair 55 penetrates through the motor plate 53 to be connected with a third servo motor 54 arranged below the motor plate 53 through a coupler, the upper end of the screw of the second screw-nut pair 55 is supported by a bearing block 552, and the bearing block 552 is fixed on the other two vertical plates 52B. The nut 553 of the second lead screw nut pair 55 is mounted on the lower portion of the elevating table 57. The top plate 571 of the lift platform 57 has a laser diode fixture seat 572, and the gap between the adjacent vertical plates 52A and 52B is the access way for the laser diode fixture 23. A second limited reflection micro-photo-sensor 573 and a positioning block 574 are mounted on a top plate 571 of the elevating table 57, and the second limited reflection micro-photo-sensor 573 senses whether the laser diode clamp 23 is in place. After the laser diode clamp 23 is in place, the positioning block 574 positions the laser diode clamp 23.
In the laser diode holder 23 there is a power supply circuit for the laser diode, which comprises a socket arranged inside the laser diode holder 23, a conductive line and three metal contacts arranged outside the laser diode holder 23. The socket is connected to the metal contacts by conductive traces. When the laser diode 80 is inserted into the laser diode holder 23, three pins of the laser diode 80 are inserted into a socket inside the laser diode holder 23. Three probes are arranged on the top plate 571 of the lifting platform 57 and are connected with an external laser diode power supply, when the laser diode clamp 23 with the laser diode 80 is seated in the laser diode clamp seat hole 572 on the top plate 571 of the lifting platform 57, the three probes arranged on the top plate 571 of the lifting platform 57 are electrically connected with three metal contacts on the laser diode clamp 23, so that the laser diode 80 is electrified and emits light.
The working process of the planar light pipe focusing machine provided by the embodiment of the invention comprises the following steps:
1) the protective door opening and closing mechanism 24 opens the protective door 71, an operator places the laser diode 80 into the laser diode clamp 23, the laser diode clamp 23 clamps the laser diode 80, the conical glass tube 90 with the bottom surface coated with the UV glue 93 is placed into the conical glass tube clamp 22, and the protective door opening and closing mechanism 24 closes the protective door 71;
2) the first correlation photoelectric sensor 27 senses that the conical glass tube is in place, the second correlation photoelectric sensor 28 senses that the laser diode is in place, and the longitudinal and transverse movement mechanism 30 drives the mechanical arm 40 to move above the support 25 of the loading and unloading mechanism 20; the clamping cylinder 48 of the manipulator 40 clamps the laser diode clamp 23, and the suction nozzle 49 of the manipulator 40 sucks the conical glass tube 90;
3) the longitudinal and transverse movement mechanism 30 drives the manipulator 40 to move above the assembly calibration mechanism, and the lifting platform 57 of the assembly mechanism 50 is positioned at the lower end in the vertical direction; the manipulator 40 firstly puts the laser diode clamp 23 with the laser diode 80 into the laser diode clamp seat hole 572 of the assembly mechanism lifting table top plate 571 from the side surface of the assembly mechanism 50 mounting frame and then retreats; when the laser diode clamp 23 is placed in the laser diode clamp seat hole 572, three metal contacts on the laser diode clamp 23 are connected with the probe, and the laser diode 80 is electrified to emit light; the lifting mechanism 50B is started to lift the lifting table 57 and the laser diode jig 23 to the upper end in the vertical direction;
4) the suction nozzle 49 of the manipulator 40 sucks the tapered glass tube 90, moves to the right above the light guide plate 51 of the assembly mechanism, then descends, and places the tapered glass tube 90 on the top surface of the laser diode 80, and at this time, the tapered glass tube 90 is positioned in the central hole 511 of the light guide plate 51;
5) the light emitted by the laser diode 80 is irradiated on the conical reflector 91 of the conical glass tube 90 and is reflected by the conical reflector 91 to be diffused in a plane; the plane light emitted by the tapered glass tube 90 passes through the 8 radial light guide holes 512 of the light guide plate 51 to form 8 light beams 93, and the 8 light beams 93 pass through the light inlets 623 of the 8 pentaprisms 62 and irradiate onto the bodies 621 of the 8 pentaprisms 62;
6) the two cameras 63 and the 4 power probes 64 respectively obtain the light intensity of the light beam 93 from the light transmission hole 625 at the rear part of the pentaprism seat 622, the captured light intensity signal is sent to the industrial personal computer for preliminary adjustment, and the industrial personal computer controls the longitudinal and transverse movement mechanism 30 to move the conical glass tube 90 along the X-axis direction and/or the Y-axis direction, so that the readings of the 4 power probes 64 are consistent, and the power is consistent; at this time, the 8 light beams 93 emitted by the tapered glass tube 90 are on the same radius and have consistent intensity;
7) the 8 pentaprism bodies 621 respectively refract the incident light downward and emit the light toward the light inlets 611 of the 8 collimators 61; the collimator sends the obtained collimation data to the industrial personal computer, the industrial personal computer drives the conical glass tube 90 to horizontally displace by controlling the transverse movement mechanism 30, the rotary table 47 of the manipulator 40 drives the conical glass tube 90 to rotate by the suction nozzle 49, when 8 collimators 61 send out qualified collimation signals to the control circuit, the rotary table 47 stops rotating, the suction nozzle 49 breaks vacuum, and the manipulator 40 is lifted;
8) 4 UV lamps 513 on the light guide plate 51 cure the UV glue 93 between the tapered glass tube 90 and the laser diode 80, and the tapered glass tube 90 and the laser diode 80 are assembled into a finished product 100;
9) the lifting mechanism 50B is started to lower the lifting table 57 and the laser diode jig 23 to the lower end in the vertical direction; the clamping head of the clamping cylinder 48 of the manipulator 40 enters from the side of the mounting frame of the assembly mechanism 50, clamps the laser diode clamp 23 with the finished product 100 and takes out from the mounting frame of the assembly mechanism 50;
10) the longitudinal and transverse movement mechanism 30 drives the mechanical arm 40 to move above the support 25 of the loading and unloading mechanism 20, and the laser diode clamp with the finished product 100 is placed in the positioning groove 252 of the laser diode clamp; the third correlation photosensor 29 and the first limited reflection micro photosensor 26 respectively send signals to the control circuit;
11) the protective door opening and closing mechanism 24 opens the protective door 71, the operator takes the finished product 100 away, places a new laser diode 80 into the laser diode holder 23, places a new tapered glass tube 90 into the tapered glass tube holder 22, and starts a new work cycle.
The assembling and adjusting process of the planar light tube focusing machine of the embodiment of the invention has high automation degree and high adjusting efficiency.

Claims (10)

1. A plane light pipe focusing machine comprises a frame, a feeding and discharging mechanism and a control circuit, and is characterized by comprising a material transfer mechanism and an assembly calibration mechanism, wherein the material transfer mechanism takes out a laser diode and a conical glass pipe from the feeding and discharging mechanism, transfers the laser diode and the conical glass pipe to the assembly calibration mechanism, assembles and calibrates the laser diode and the conical glass pipe; and the assembled and calibrated finished product of the plane light pipe is sent back to the feeding and discharging mechanism by the material transfer mechanism.
2. The planar lightpipe focusing machine of claim 1, wherein the frame comprises a base and a platen, the platen disposed on top of the base; the feeding and discharging mechanism comprises a conical glass tube clamp and a laser diode clamp, and the conical glass tube clamp and the laser diode clamp are arranged above the bedplate; the material transfer mechanism is arranged on the bedplate and comprises a longitudinal and transverse movement mechanism and a mechanical arm; the middle portion of the bedplate comprises a through hole, the lower portion of the assembly and calibration mechanism is arranged in the machine base and supported by the machine base, and the upper portion of the assembly and calibration mechanism penetrates through the through hole of the bedplate.
3. The planar lightpipe focusing machine of claim 2, wherein the cross-bar mechanism comprises an X-axis mechanism and a Y-axis mechanism, the X-axis mechanism comprising a first linear module and the Y-axis mechanism comprising two second linear modules; the two second linear modules are arranged at two ends of the bedplate along the X-axis direction, and the axes of the second linear modules are arranged along the Y-axis direction; the axis of the first linear module is arranged along the X-axis direction, and two ends of the first linear module are respectively fixed on the sliding blocks of the two second linear modules; the material transfer mechanism is arranged on the sliding block of the first linear module.
4. The planar lightpipe focusing machine of claim 2, wherein the manipulator comprises a vertical plate, a connecting plate, a first servo motor, two sets of first linear guide rail pairs, a first screw nut pair, a synchronous belt mechanism, a rotary table, a clamping cylinder and a suction nozzle, wherein the vertical plate is mounted on the longitudinal and transverse movement mechanism; the guide rails of the two sets of first linear guide rail pairs are vertically fixed on the vertical plate; a screw rod of the first screw rod nut pair is vertically arranged on the vertical plate; the first servo motor is arranged between the guide rails of the two sets of first linear guide rail pairs and driven by a synchronous belt mechanism; the connecting plate is fixed on the sliding blocks of the two sets of first linear guide rail pairs and is connected with the nuts of the first screw rod nut pair, and the rotating table driven by the second servo motor is fixed at the lower part of the connecting plate; the suction nozzle is vertically fixed at the lower part of the rotating platform and is coaxial with the rotating axis of the rotating platform; the clamping cylinder is fixed at the lower end of the rotating platform, and the plane where the clamping cylinder is located is orthogonal to the rotating axis of the rotating platform.
5. The planar lightpipe focusing machine of claim 2, comprising a hood, the hood covering the upper side of the frame, the loading and unloading mechanism, the longitudinal and transverse movement mechanism, the robot and the assembly and calibration mechanism being disposed under the hood, the hood comprising a protective door; the feeding and discharging mechanism comprises a bottom plate, a protective door opening and closing mechanism, a support, three opposite emission type photoelectric sensors and a first limited reflection type miniature photoelectric sensor, the bottom plate is fixed on the top surface of the bedplate, and the support is fixed on the bottom plate and positioned behind the protective door; the top surface of the support comprises a conical glass tube clamp positioning groove and a laser diode clamp positioning groove, the conical glass tube clamp is placed in the conical glass tube clamp positioning groove, and the laser diode clamp is placed in the laser diode clamp positioning groove; the protective door opening and closing mechanism comprises a second linear guide rail pair and a first air cylinder; the guide rail of the second linear guide rail pair is fixed on the bottom plate and is parallel to the protective door; the lower part of the protective door is fixed on a sliding block of the second linear guide rail pair, the first air cylinder is fixed on the bottom plate and is parallel to the second linear guide rail pair, and the protective door is connected with a piston rod of the first air cylinder; the three pairs of correlation photoelectric sensors are arranged above the support and are respectively used for detecting the in-place of the conical glass tube, the laser diode and the assembled finished product; the first limited reflection micro photoelectric sensor is arranged at the bottom of the positioning groove of the laser diode clamp and used for detecting the in-place of the laser diode clamp.
6. The planar lightpipe focusing machine of claim 2, wherein the assembling calibration mechanism comprises an assembling mechanism and a calibration mechanism, the calibration mechanism comprises a bracket, N collimators and N pentaprisms, N is greater than or equal to 3; the N collimators are vertically fixed on the bracket and uniformly distributed along the circumferential direction of the bracket, and the bracket is supported by the machine base; the N pentaprisms are fixed on the bracket and are positioned right above the corresponding collimators; the light outlet of the pentaprism faces to the light inlet of the corresponding collimator, and the signal output end of the collimator is connected with the control circuit; the assembling mechanism comprises an installation frame, a lifting mechanism and a light guide plate, and the installation frame is vertically fixed at the central part of the bracket; the lifting mechanism is positioned in the mounting frame and is coaxial with the central axis of the support, and the top of the lifting mechanism comprises a seat hole of the laser diode clamp; the light guide plate is fixed at the top of the mounting frame, is positioned above the seat hole of the laser diode clamp and comprises a central hole and N radial light guide holes, the inlets of the radial light guide holes are communicated with the central hole, and the outlets of the radial light guide holes face to the light inlet of the corresponding pentaprism; the light guide plate comprises a plurality of UV lamps, and the UV lamps are arranged on the inner wall of the central hole of the light guide plate and are uniformly distributed along the circumferential direction of the central hole; the laser diode clamp comprises a power supply circuit of the laser diode, and when the laser diode clamp is located in a seat hole of the laser diode clamp, the power supply circuit is connected with a power supply of the laser diode.
7. The planar lightpipe focusing machine of claim 6, wherein N-8, the calibration mechanism comprises two cameras and 4 power probes, the signal output terminals of the cameras and the signal output terminals of the 4 power probes are respectively connected to the control circuit; the pentaprism comprises a pentaprism body and a pentaprism seat, the pentaprism body is arranged in the pentaprism seat, and the pentaprism seat comprises a pentaprism light inlet and a pentaprism light outlet; the pentaprism light inlet is positioned at the front part of the pentaprism seat, and the pentaprism light outlet is positioned at the bottom of the pentaprism seat; the support comprises a base, an annular top plate and 8 stand columns, the top plate is fixed at the top ends of the 8 stand columns, the lower ends of the 8 stand columns are connected with the base, and the base is supported by the base; the top plate comprises 8 light through holes, the light outlet of the pentaprism faces to the corresponding light through holes, and the pentaprism seat is arranged on the top plate and is positioned above the light through holes; the rear part of the pentaprism seat comprises a light transmission hole, the two cameras and the 4 power probes are respectively arranged at the rear parts of the 8 pentaprism seats, and the corresponding central angle between the two cameras is 90 degrees; the corresponding central angle between adjacent power probes is 90 °.
8. The planar lightpipe focusing machine of claim 6, wherein the mounting frame comprises 4 vertical plates and a motor plate, wherein the 4 vertical plates are uniformly distributed along the circumference of the mounting frame, the upper end of the vertical plates is connected with the light guide plate, and the lower end of the vertical plates is connected with the motor plate; the lifting mechanism comprises a third servo motor, a second screw rod nut pair, two sets of third linear guide rail pairs and a lifting platform; the guide rails of the two sets of third linear guide rail pairs are respectively fixed on the inner sides of the two opposite vertical plates, and the sliding blocks of the two sets of third linear guide rail pairs are respectively fixed on two sides of the lifting platform; the lower end of a screw rod of the second screw rod nut pair penetrates through the motor plate to be connected with a third servo motor arranged below the motor plate, and a nut of the second screw rod nut pair is arranged at the lower part of the lifting table; the top plate of the lifting platform comprises the laser diode clamp seat hole.
9. The planar lightpipe focusing machine of claim 6, wherein the operation of the planar lightpipe focusing machine comprises the steps of:
901) an operator puts a laser diode into a laser diode clamp and puts a conical glass tube into a conical glass tube clamp;
902) the vertical and horizontal movement mechanism drives the mechanical arm to move above the support of the feeding and discharging mechanism, a clamping cylinder of the mechanical arm clamps the laser diode clamp, and a suction nozzle of the mechanical arm sucks the conical glass tube;
903) the vertical and horizontal movement mechanism drives the manipulator to move above the assembly and calibration mechanism, and a lifting platform of the assembly mechanism is positioned at the lower end in the vertical direction; the manipulator firstly puts the laser diode clamp with the laser diode into a laser diode clamp seat hole of a top plate of an assembly mechanism lifting platform from the side surface of an assembly mechanism mounting frame and then withdraws, and the laser diode is electrified to emit light; starting a lifting mechanism to lift the laser diode clamp to the upper end in the vertical direction;
904) a suction nozzle of the manipulator sucks the conical glass tube to move right above the light guide plate of the assembly mechanism and then moves downwards, the conical glass tube is placed on the top surface of the laser diode, and the conical glass tube is positioned in a central hole of the light guide plate;
905) the light emitted by the laser diode is irradiated on a conical reflector of the conical glass tube and is reflected by the conical reflector to be diffused in a plane; the plane light emitted by the conical glass tube passes through the radial light guide holes of the light guide plate to form N light beams, the N light beams pass through the light inlets of the N pentaprisms to irradiate onto the bodies of the N pentaprisms, and the N pentaprism bodies respectively refract the incident light downwards and irradiate the incident light to the light inlets of the N collimators;
906) the collimator sends the obtained collimation data to the control circuit, the control circuit controls the transverse movement mechanism to drive the conical glass tube to horizontally displace, the control circuit controls the rotary table of the manipulator to drive the conical glass tube to rotate through the suction nozzle, when the N collimators all send out qualified collimation signals to the control circuit, the transverse movement mechanism stops moving, the rotary table stops rotating, the suction nozzle breaks vacuum, and the manipulator is lifted;
907) curing the bonding glue between the tapered glass tube and the laser diode by the plurality of UV lamps on the light guide plate, and assembling the tapered glass tube and the laser diode into a finished product;
908) starting the lifting mechanism, and descending the laser diode clamp to the lower end in the vertical direction; a chuck of the manipulator clamping cylinder enters from the side surface of the assembling mechanism mounting frame, clamps the laser diode clamp with the finished product and takes out the laser diode clamp from the assembling mechanism mounting frame;
909) the longitudinal and transverse movement mechanism drives the manipulator to move above the feeding and discharging mechanism, and the laser diode clamp with the finished product is placed on the feeding and discharging mechanism; the operator takes the finished product away, places a new laser diode into the laser diode clamp, places a new tapered glass tube into the tapered glass tube clamp, and begins a new work cycle.
10. The planar lightpipe focusing machine of claim 9, wherein N-8, the calibration mechanism comprises two cameras and 4 power probes, and the signal output terminals of the cameras and the signal output terminals of the 4 power probes are respectively connected to the control circuit; the pentaprism comprises a pentaprism body and a pentaprism seat, the pentaprism body is arranged in the pentaprism seat, and the pentaprism seat comprises a pentaprism light inlet and a pentaprism light outlet; the pentaprism light inlet is positioned at the front part of the pentaprism seat, and the pentaprism light outlet is positioned at the bottom of the pentaprism seat; the support comprises a base, an annular top plate and 8 stand columns, the top plate is fixed at the top ends of the 8 stand columns, the lower ends of the 8 stand columns are connected with the base, and the base is supported by the base; the top plate comprises 8 light through holes, the light outlet of the pentaprism faces to the corresponding light through holes, and the pentaprism seat is arranged on the top plate and is positioned above the light through holes; the rear part of the pentaprism seat comprises a light transmission hole, the two cameras and the 4 power probes are respectively arranged at the rear parts of the 8 pentaprism seats, and the corresponding central angle between the two cameras is 90 degrees; the corresponding central angle between the adjacent power probes is 90 degrees; the working process of the plane light pipe focusing machine comprises the primary adjusting and correcting steps: before step 906, the two cameras and the 4 power probes respectively acquire the light intensity of the light beam from the light-transmitting hole in the rear part of the pentaprism seat, the captured light intensity signal is sent to the control circuit for preliminary adjustment, and the control circuit controls the longitudinal and transverse movement mechanism to move the tapered glass tube along the X-axis direction and/or the Y-axis direction, so that the power readings of the 4 power probes are consistent.
CN202210221948.4A 2022-03-09 2022-03-09 Plane light pipe focusing machine Active CN114562501B (en)

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