CN111618547A - Positioning and assembling method of lens assembling equipment - Google Patents
Positioning and assembling method of lens assembling equipment Download PDFInfo
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- CN111618547A CN111618547A CN202010331159.7A CN202010331159A CN111618547A CN 111618547 A CN111618547 A CN 111618547A CN 202010331159 A CN202010331159 A CN 202010331159A CN 111618547 A CN111618547 A CN 111618547A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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Abstract
The invention provides a positioning and assembling method of a lens assembling device, wherein the lens assembling device comprises: a lens transport structure, a mirror base transport structure and a beam assembly structure mounted in parallel with each other on a frame structure having a standard plane, wherein the mirror base transport structure provides an assembly platform for assembly between the lens and the mirror base; and a control module electrically connecting the lens transport structure, the lens mount transport structure, and the beam assembly structure, respectively, the method comprising: the lens transport structure is controlled by the control module to transport the lens material tray to a preset position so as to facilitate the cross beam type assembly structure to absorb materials, the lens seat transport structure is controlled to take out the lens seat material tray from the lens seat material bin and transport the lens seat, the cross beam type assembly structure is controlled by the control module to absorb the lens from the lens material tray conveyed on the lens transport structure and assemble the lens into the lens seat received and fixed by the lens seat transport structure, and then the lens seat transport structure is transported back to the original lens seat material bin.
Description
Technical Field
The present invention generally provides an automated lens positioning and assembling method for a lens of an electronic device, and more particularly, to an automated lens positioning and assembling method for assembling and optically precisely positioning a lens and a lens holder of an electronic device (e.g., an intelligent electronic device, a personal computer, etc.).
Background
With the increasing performance demands of the market on the lenses of electronic devices and the continuous shortening of the updating period of electronic devices, especially when it is desired to install the lenses with better optical performance in more compact electronic devices, the number of lenses and the requirements on the optical performance of the lenses for the electronic devices are gradually increased, so that the requirements on the assembly of such lenses are also increased.
At present, the precision of manual assembly cannot meet the requirement of the existing lens with high pixel and high definition. Meanwhile, the number of cameras of the electronic equipment is increasing day by day, and a configuration mode of a single combined camera (for example, 6 or more than 6 cameras) has been developed from the previous mode of installing one camera on a single equipment. Moreover, the number of lenses in a lens of a single electronic device has also evolved to a multi-piece or even greater number of stacked installations.
Based on the practical production problem, the automatic integrated assembling equipment which can realize the high-efficiency and high-precision production of lens assembly of the electronic equipment lens and meet the requirement of the current lens production needs to be designed.
Disclosure of Invention
The technical scheme of the invention mainly provides a full-automatic lens assembly method, which can ensure that the processes of loading, assembling and returning the lens assembly are all automatically completed by equipment according to programming. The assembling equipment provided by the invention can be compatible with most specifications of lenses in the industry, and the assembling requirements of electronic equipment lenses with different specifications can be compatible only by replacing each assembling module.
The technical scheme provided by the invention is as follows: a positioning assembly method of a lens assembly apparatus, the lens assembly apparatus comprising: a lens transport structure, a mirror base transport structure and a beam assembly structure mounted in parallel with each other on a frame structure having a standard plane, wherein the mirror base transport structure provides an assembly platform for assembly between the lens and the mirror base; and a control module electrically connecting the lens transport structure, the lens mount transport structure, and the beam assembly structure, respectively, the method comprising: the lens transport structure is controlled by the control module to transport the lens material tray to a preset position so as to facilitate the cross beam type assembly structure to absorb materials, the lens seat transport structure is controlled to take out the lens seat material tray from the lens seat material bin and transport the lens seat, the cross beam type assembly structure is controlled by the control module to absorb the lens from the lens material tray conveyed on the lens transport structure and assemble the lens into the lens seat received and fixed by the lens seat transport structure, and then the lens seat transport structure is transported back to the original lens seat material bin.
As an improvement, the method further comprises: the lifting cylinder is controlled to ascend to lift the discharging pull rod and the discharging pull rod adjusting block which are oppositely arranged at two sides of the assembling platform, the clamping cylinder is in a lifting state at the moment, the discharging pull rod is driven to extend out of the assembling platform along the guide rail, a lens base material tray separated from the lens base material bin is received and placed on the discharging pull rod, the screw rod motor is controlled to act to stretch the discharging pull rod to be right above the assembling platform, then the lifting cylinder is controlled to descend and reset, so that the discharging pull rod and the microscope base material tray descend and are placed on the upper surface of the assembling platform, the discharging pull rod is controlled to be separated from the material tray to be assembled, at the moment, an electric signal stored on the assembling platform is sensed and received through an optical fiber sensor, the clamping cylinder is controlled to stretch and contract, the positioning of the microscope base material tray in the Y direction is the same each time under the action of the positioning stop piece, and the positioning in the X direction is determined by the guide groove; controlling the clamping cylinders which are opposite at two sides of the assembling platform to simultaneously descend and reset so as to tightly press and fix the microscope base material tray on the surface of the assembling platform; controlling the double-rotor motor to carry the lens to move in the X direction, and controlling the suction nozzle structure to move in the Z direction through the linear module arranged on the suction structure so as to suck and convey the lens for assembling a lens base material tray; after the assembly is completed, the clamping cylinder is controlled to lift, and the lifting cylinder is controlled to lift the screw rod motor so as to convey the microscope base material disc out of the current assembly platform, and the microscope base material disc is arranged in the microscope base material bin under the synchronous mechanical driving effect of the microscope base material bin lifting mechanism.
In a variation on this basis, the method further comprises: controlling the straight-upward shooting structure to respectively identify the lens transportation structure, the lens conveyed on the lens base transportation structure, defective products of the lens base and coordinate positioning identification so as to drive coordinate fine adjustment of the lens transportation structure and the lens base transportation structure; and controlling the direct type shooting structure to recognize the coordinate positioning of the cross beam type assembly structure sucking the lens from the lens transportation structure and performing corresponding coordinate position compensation by combining the lens base transportation structure so as to perform accurate positioning of assembly.
Preferably, in the above solution, the microscope stand transporting structure comprises a microscope stand assembling platform, the microscope stand assembling platform has a body, and comprises a screw motor, a lifting cylinder, a discharging pull rod adjusting block, an optical fiber sensor, a clamping cylinder, a positioning block piece, an assembling platform, a guide rail and a guide groove, which are installed on the body, wherein the discharging pull rod and the lifting cylinder are tightly connected to the screw motor, the lifting cylinder is used for lifting or lowering the discharging pull rod and the discharging pull rod adjusting block which are oppositely arranged at two sides of the assembling platform, the discharging pull rod can stretch relative to the assembling platform under the guide rail guiding action to receive and bear a microscope stand charging tray, the optical fiber sensor is installed on the assembling platform for sensing the existence of the microscope stand charging tray to drive and control the stretching of the clamping cylinder, and the common limiting action of the positioning block piece is used for positioning the microscope stand charging tray in one direction, the guide groove is used for limiting the positioning of the microscope base material tray in the orthogonal direction, and the positioning cylinder is arranged on the assembling platform and used for fixing the current microscope base material tray.
As a variant, the lens magazine lifting structure and/or the lens holder magazine lifting structure is provided with a hand-held magazine which is arranged on a magazine bottom plate, wherein a stop dog is arranged at the outer circumference of the magazine bottom plate for positioning the hand-held magazine.
Wherein, one or more lateral parts of this feed bin bottom plate are equipped with the elbow and press from both sides for fasten portable feed bin on this feed bin bottom plate under screwing up the effect, install the guiding axle and link up the feed bin bottom plate to the portable feed bin in the motor that runs through at the bracket bottom side of this feed bin bottom plate, under the mechanical drive effect of this motor that runs through, urge this portable feed bin to go up and down in order to switch the lens/mirror seat charging tray of arranging in different layer eminences, this guiding axle is used for this guide effect of running through motor to lens/mirror seat charging tray lift in the portable feed bin. The semi-closed portable storage bin provides a brand-new loading mode, and can obviously reduce secondary pollution caused by lenses and lens bases in the transportation process. On the basis, more than 10 trays can be accommodated in a single bin in the actual production process, the changing time of operators can be shortened to a greater extent, the labor is saved, and the unit hour productivity (UPH) is effectively increased.
On this basis, set up charging tray inductive transducer at this portable feed bin lateral part for whether detect the preset position department in this portable feed bin and have the charging tray and give detection signal transmission.
As another improvement, the lens transport structure comprises an X-direction linear motor, a Y-direction linear motor and a lens carrying platform, wherein the X-direction linear motor is arranged on the Y-direction linear motor and can reciprocate along a preset track in the Y direction along with the driving of the motor, and the lens carrying platform is arranged on the X-direction linear motor and can reciprocate in the X direction along the preset track.
In addition, the X-direction linear motor and the Y-direction linear motor are respectively provided with a high-precision grating ruler for performing optical alignment on the moving boundary of the lens carrying platform.
As a further improvement, the mirror base transport structure includes an X-direction linear motor mounted on the Y-direction linear motor and capable of reciprocating adjustment movement in the Y direction along a predetermined track in accordance with motor driving, a Y-direction linear motor mounted on the X-direction linear motor and capable of reciprocating movement in the X direction along a predetermined track, and a mirror base assembly platform mounted on the X-direction linear motor and capable of reciprocating movement in the X direction along a predetermined track.
As an improvement, the beam type assembly structure comprises a double-rotor motor and two material suction structures arranged on two end sides, wherein the two material suction structures are fixedly arranged on the double-rotor motor.
Specifically, the double-rotor motor is used for carrying materials to move in the X direction, a linear module is arranged on any one of the material suction structures and used for the movement of the suction nozzle structure in the Z direction, the material suction structure is also provided with a pressure maintaining cylinder used for ensuring the constant assembling pressure when the lens and the lens base are assembled, and the bottom of the pressure maintaining cylinder is further provided with a floating joint (502-04) used for preventing the operation of the pressure maintaining cylinder from being blocked.
In a preferred example, the lower end of the hollow motor is a force-bearing structure of the suction nozzle, and the force-bearing structure consists of a central shaft, an angular contact bearing, a deep groove ball bearing, a centering structure and the suction nozzle. The center shaft is used for bearing the hollow motor and the suction nozzle, the angular contact bearing is used for bearing the axial force generated when the lens is assembled, the deep groove ball bearing is used for increasing the rotation coaxiality, and the centering structure is used for adjusting the coaxiality of the suction nozzle and the hollow motor during working. The device is additionally provided with the constant pressure structure in the Z axis, so that the lens cannot be crushed due to uncontrolled stress during assembly, and the assembly consistency of the lens can be ensured.
As a modified configuration of any of the above improved aspects, the lens assembling apparatus of the present invention is further provided with: the straight-up shooting structure is used for respectively identifying defective products and coordinates of the lens and the lens base on the lens transportation structure and the lens base transportation structure so as to drive the lens transportation structure and the lens base transportation structure to perform coordinate fine adjustment; the direct type shooting structure is used for recognizing the coordinate positioning of the lens absorbed by the cross beam type assembly structure from the lens transportation structure and compensating the corresponding coordinate position by combining the lens base transportation structure so as to perform accurate positioning.
Preferably, the direct-type photographing structure includes an integrated optical detection system composed of a light source, a lens and a camera. The optical detection system is fixed on a rotary adjusting platform, and the rotary adjusting platform is mainly used for avoiding the problem that a Z-axis light path is not vertical due to the reasons of processing, assembling and the like. The rotary adjusting platform is also fixedly arranged on the Z-direction adjusting part, and the Z-direction adjusting part is used for adapting to adjustable lenses with different optical depth of field. On this basis, the entire optical detection system is fixed to a Y-direction adjustment section for solving the Y-axis positional deviation that occurs during assembly.
The straight-up shooting structure is used for identifying the position of the lens absorbed by the beam type assembly structure from the lens transportation platform and feeding back the position to the optical detection system processor to execute position compensation. Similarly, the optical detection system of the shooting structure mainly comprises a light source, a lens and a camera, the whole set of optical detection system is fixed on a Z-direction adjusting part, the Z-direction adjusting part is mainly used for Z-direction camera position compensation and is suitable for adjustable lenses with different depth of field requirements similarly to the direct-type shooting structure, the whole optical detection system is carried on a Y-direction adjusting part, and the Y-direction adjusting part is mainly used for compensating Y-direction offset of the camera. The optical detection system has the function of automatically identifying the NG lenses, so that the NG lenses do not need to be picked out during loading, and the NG lenses are automatically skipped without subsequent assembly after the optical detection. The camera modules are provided with adjusting structures, and requirements of different lens specifications and sizes can be met. In addition, the invention meets the lens assembly function and simultaneously increases the defect rapid detection function, thereby greatly ensuring the yield of the subsequent process.
The invention further provides a lens assembly system, which comprises the lens assembly devices arranged in pairs, wherein each pair of lens assembly devices share one beam type assembly structure. The symmetrical double-station design can ensure that no interference exists when equipment runs, can realize higher efficiency and capacity, adopts a full-automatic assembly line detection mode, and has extremely high detection efficiency because all stations detect in parallel.
Specifically, the cross beam type assembly structure comprises a double-rotor motor, and a material suction structure which are arranged on two sides of the double-rotor motor. Wherein two are inhaled the material structure and are fixed mounting on this double-rotor motor, and these two are inhaled the material structure and are used for inhaling on left and right station respectively and assemble, and both mutually noninterfere. In a preferred example, the two suction structures on the left and right sides are similar, and only the directions of the linear die sets are different.
In addition, the complete set of transportation structure modules in the assembly equipment provided by the invention adopt high-precision motors, and higher automatic assembly precision can be obtained. The invention adopts the fixed positioning of the camera, and the equipment can obtain higher assembly precision and higher efficiency.
The invention has the following beneficial effects: (1) the full automation of lens assembly is realized, and the production efficiency is greatly improved; (2) the assembling equipment realizes the functions of automatic feeding and discharging, automatic assembling, automatic identification of defective lenses and the like, and greatly reduces the manual detection cost; (3) the system is provided with two symmetrical stations, so that the equipment UPH can be greatly improved, the two stations which are symmetrical left and right do not interfere with each other during operation, and the normal production operation of the other side is not influenced by the single-side fault of the equipment; (4) each material transportation structure module adopts a high-precision motor and is combined with visual detection, so that higher assembly precision can be obtained; (5) the equipment adopts a portable detachable bin to complete feeding and discharging, and the bin adopts a semi-closed structure to greatly increase the assembly yield; (6) the assembly pressing structure provided by the equipment has constant pressure, so that the assembly consistency can be ensured; (7) the device provided by the invention has the advantages that the defect detection function is added on the basis of assembling the lens, and the yield of the subsequent process is ensured.
Drawings
FIG. 1 is a top perspective view of a body construction of an embodiment of a lens assembly system of the present invention;
FIG. 2 is a perspective view of the body construction of the lens ejection pin structure;
FIG. 3 is a perspective view of the main body structure of the lens bin lifting structure;
FIG. 4 is a perspective view of the main structure of the mirror base bin lifting mechanism;
FIG. 5 is a perspective view of the body construction of the lens transport structure;
FIG. 6 is a perspective view of the body construction of the lens carrier platform;
FIG. 7 is a perspective view of the body construction of the mirror base transport structure;
FIG. 8 is a perspective view of the main body structure of the lens holder assembly platform;
FIG. 9 is a perspective view of the main body structure of the cross member type assembling structure;
FIG. 10 is a perspective view of the main body structure of the double-rotor motor and its suction structure;
FIG. 11 is a perspective view of the main structure of the direct type photographing structure;
FIG. 12 is a perspective view of the main structure of the direct type photographing structure;
fig. 13 schematically depicts a top view of an assembly structure of respective modules of an optical detection system in the lens assembly apparatus of the present invention;
FIG. 14 is a perspective view of the optical detection system shown in FIG. 13;
fig. 15 schematically depicts an exemplary configuration of a lens assembling apparatus assembly using such a lens assembling apparatus.
Detailed Description
The technical solution of the present invention and its outstanding advantages are described in detail below with reference to the accompanying drawings. In some embodiments, since the apparatus is a bilaterally symmetric mechanism, for simplicity of illustration, the following examples of the present invention will be described primarily with reference to the mechanism of the left portion of the apparatus, which is structurally symmetric or similar to the apparatus.
FIG. 1 schematically depicts the body construction of an embodiment of the present invention. In one general aspect, the lens assembly apparatus mainly comprises a frame structure 800 (e.g., a rigid frame structure, which may be metal/alloy, hard insulating material, etc. with a pressure-bearing function and low flexibility) that is flat (e.g., aligned with a standard reference plane), and a lens discharging push rod structure 900, a lens bin lifting structure 100, a lens holder bin lifting structure 200, a lens transport structure 300, a lens holder transport structure 400, a beam assembly structure 500, an upper straight shooting structure 600, and a lower straight shooting structure 700 that are disposed on the frame structure 800.
The lens discharging push rod structure 900 is mainly used for pushing the lenses to be assembled from the lens bin to the lens transportation structure 300, the lens bin lifting structure 100 is mainly used for storing and switching lens trays with different layer heights, the lens bin lifting structure 200 is mainly used for storing and switching lens seat trays with different layer heights and lens seat holders, the lens transportation structure 300 is mainly used for transporting the lens trays to a preset position so as to facilitate the cross beam type assembly structure 500 to perform material suction, the lens seat transportation structure 400 is mainly used for taking out and putting back the lens seat trays from the lens seat bin and transporting the lens seat, and meanwhile, an assembly platform is provided for assembly between the lenses and the lens seat, the cross beam type assembly structure 500 is mainly used for sucking the lenses from the lens trays conveyed from the lens transportation structure 300 and assembling the lenses into the lens seat received and fixed by the lens seat transportation structure 400, and the straight-up type shooting structure 600 is mainly used for the lens transportation structure 300, respectively, Lens, mirror seat's defective products (no good, NG) discernment and coordinate location discernment on mirror seat transport structure 400 to do the coordinate fine setting to lens transport structure 300 and mirror seat transport structure 400, directly following formula shooting structure 700 is mainly used for discerning the coordinate location of this crossbeam formula package assembly 500 lens of absorbing from lens transport structure 300 and combine mirror seat transport structure 400 to do corresponding coordinate position compensation, so that carry out accurate location.
In any embodiment of the present invention, the terms "material" and "materials" are used to generally refer to the lens, lens and their attachments of an electronic device that are required to be manufactured and/or assembled during the actual manufacturing process. As understood herein, "tray" refers to lens holding devices, containers, etc. that are manufactured for transport, transfer, or dust free environment during certain manufacturing processes, and "silo" refers to a container or closed/semi-closed chamber for stacking, etc. the trays. In some embodiments of the invention, the silo is also provided with a programmed and/or manually controlled mechanical, electromechanical transfer, propulsion mechanism to facilitate automated production.
The definition of the features related to the moving direction/direction mentioned in any embodiment listed in the present invention can be referred to in terms of the angle of view presented in the drawings of the specification, and of course, can also be defined in terms of some feature elements, for example, a uniform reference coordinate system is marked in the drawings. According to the reference coordinate system, the X-o-Y plane is a standard reference plane, i.e. a plane orthogonal to the direction of gravitational acceleration, according to which the reference plane involved in the recognition, measurement and compensation of the optical detection system mentioned in the present invention is calculated. Of course, "right and left", "up and down" may be discriminated in accordance with the view angle provided in the drawings, but these characteristic elements are not limited thereto.
As shown in fig. 2, in a preferred embodiment of the lens discharging and pushing rod structure 900, the lens discharging and pushing rod structure 900 includes a discharging and pushing rod 901, a discharging motor 902, a sliding track 903 and a supporting rack 905, wherein the bottom of the supporting rack 905 is fixed on the surface of the frame structure 800 and the top of the supporting rack 905 is fixed with the sliding track 903, the discharging and pushing rod 901 is mainly fixed on the nut of the discharging motor 902 by screws and is fixed on the sliding block of the sliding track 903, and an axial end of the sliding track 903 is coupled to the discharging motor 902 so that under the mechanical driving of the discharging motor 902, the discharging and pushing rod 901 pushes the trays stored in the storage bins of the lens storage bin lifting structure 100 into the lens transporting structure 300 one by. Preferably, an optical fiber sensor 904 is installed at the other axial end of the sliding rail 903 (i.e. the side facing the lens bin lifting structure 100), mainly for detecting whether the bin is filled or not or for detecting a preset amount of material.
Preferably, the magazine is a portable magazine 101, and in the preferred embodiment of the lens magazine lifting structure 100 shown in fig. 3, the portable magazine 101 is disposed on a magazine bottom 106, and a plurality of stoppers 102 are disposed around the circumference of the magazine bottom 106 for positioning the portable magazine 101.
In addition, one or more sides of the silo floor 106 are provided with elbow clamps 103, and the hand-held silo 101 is secured in place on the silo floor 106 by screw tightening of the elbow clamps 103. The bottom side of a bracket 107 at the bottom of the bin bottom plate 106 is provided with a guide shaft 105 and a penetrating motor 104 penetrating the bin bottom plate 106 into the portable bin 101, so that the portable bin 101 is lifted under the mechanical driving action of the penetrating motor 104 to switch trays with different layer heights, and the guide shaft 105 is used for guiding the penetrating motor 104 to lift the trays in the portable bin 101.
Similarly, as shown in fig. 4, the main structure of the mirror base bin lifting mechanism 200 is similar to the lens bin lifting mechanism 100, and mainly comprises a portable bin 201, a stop block 202, an elbow clamp 203, a through motor 204 and a plurality of guide shafts 205, wherein the functional principle of the corresponding name/labeled component features is the same. In contrast, a tray sensing sensor 206 (e.g., fixed to the stopper 202) is provided at a side of the portable storage bin 201 for detecting whether a tray exists at each level (or predetermined level height) in the portable storage bin 201.
In a preferred embodiment, the main structure of the lens transport structure 300 is shown in fig. 5. the lens transport structure 300 mainly comprises an X-direction linear motor 302, a Y-direction linear motor 303 and a lens carrying platform 301. Wherein the X-direction linear motor 302 is mounted on the Y-direction linear motor 303 and can reciprocate along the track in the Y-direction with the motor drive, and similarly, the lens carrying platform 301 is mounted on the X-direction linear motor 302 and can reciprocate along the track in the Y-direction. Preferably, high-precision grating scales 304 are respectively arranged on the X-direction linear motor and the Y-direction linear motor for optically aligning the moving boundary of the lens carrying platform 301.
Specifically, as shown in fig. 6, a preferred example of the detailed structure of the lens carrying platform 301 is that a tray stored in its bin is pushed onto the lens tray guide rails 301-06 by the lens discharging push rod mechanism 900, and after the tray sensing sensor 301-03 senses the presence of the tray, the tray is clamped by the clamping cylinders 301-04. The lower light source 301-05 is used for light source detection of the tray lens. The push rod 301-07 is tightly installed on a nut of the blanking screw motor 301-01 through a screw, for example, and is used for pushing the material tray back to the original bin. The guide rails 301-02 are used for pushing and guiding the push rods 301-07.
As shown in fig. 7, similar to the principle of the above embodiment, the mirror base transportation structure 400 mainly includes an X-direction linear motor 402, a Y-direction linear motor 401 and a mirror base assembling platform 403, and the installation manner of the components is the same as that shown in fig. 5. Wherein, the linear motors in the X direction and the Y direction are both provided with high-precision grating scales 404 for aligning the boundary of the lens holder assembling platform 403.
As shown in fig. 7 and 8, the microscope stand assembly platform 403 is mounted on the X-direction linear motor 402 for positioning the microscope stand tray. In some implementations, the lens mount assembly platform 403, in cooperation with the lens mount bin lifting structure 200, can implement automatic loading and unloading of a lens mount tray and clamping and positioning functions of the lens mount tray.
According to the above embodiments, the lens assembling apparatus of the present invention is further provided with a control module. In any embodiment of the present invention, the control module is a programmed device assembly, and may be a distributed logic circuit component, for example, disposed in each transport structure and electrically coupled to the sensors to receive and process the triggering electrical signals. The control module may be an on-site compilable logic Array (ASIC), a Digital Signal Processor (DSP), and corresponding port components. The positioning and assembling method can comprise the following steps:
s1, the control module controls the lens transportation structure to transport the lens tray to a preset position so as to facilitate the absorption of the cross beam type assembly structure, and controls the microscope base transportation structure to take out the microscope base tray from the microscope base bin and transport the microscope base,
s2, the control module controls the crossbeam type assembly structure to suck the lens from the lens tray conveyed by the lens transportation structure and assemble the lens into the lens base received and fixed by the lens base transportation structure, and then the lens base is transported back to the original lens base bin by the lens base transportation structure.
In a preferred embodiment, the positioning and assembling method using the microscope base assembling platform 403 comprises:
(1) the lifting cylinder 403-02 is lifted to raise the discharging pull rod 403-03 and the discharging pull rod adjusting block 403-04 opposite to the two sides of the assembling platform 403-09, and the clamping cylinder 403-06 is in a lifting state. The discharging pull rod adjusting block 403-04 can be adjusted back and forth to be suitable for charging trays with different length sizes, and the discharging pull rod 403-03 and the lifting cylinder 403-02 can be tightly connected to a nut of the screw rod motor 403-01 through screws for example.
(2) Under the guiding action of the guide rail 403-10, the discharging pull rod 403-03 can extend out of the assembly platform 403. Under the mechanical lifting action of the microscope base bin lifting structure 200, the microscope base tray is separated from the portable bin 201 and is placed on the left and right discharging pull rods 403-03.
(3) The discharging pull rod 403-03 is stretched to the position right above the assembling platform 403-09 under the action of the screw rod motor 403-01, then the lifting cylinder 403-02 descends and resets, so that the microscope base material tray and the discharging pull rod 403-03 descend and the microscope base material tray is placed on the upper surface of the assembling platform 403-09, and the discharging pull rod 403-03 is separated from the material tray to be assembled. At the moment, the optical fiber sensor 403-05 senses and receives an electric signal stored on the assembly platform 403-09, controls the clamping cylinder 403-06 to stretch and contract, and enables the positioning of the lens holder tray in the Y direction to be the same each time under the action of the positioning baffle plate 403-08, and the positioning in the X direction is determined by the guide groove 403-11.
(4) Then, the clamping cylinders 403-06 on the left and right sides of the assembling platform 403-09 are controlled to simultaneously descend and reset so as to tightly press and fix the microscope base tray on the assembling platform 403-09.
(5) After the assembly is finished, the clamping cylinder 403-05 is controlled to lift, the lifting cylinder 403-02 lifts the screw rod motor 403-01 to convey the microscope base material disc out of the current assembly platform 403-09, and the microscope base material disc is placed in the handheld bin 201 under the synchronous mechanical driving action of the microscope base bin lifting mechanism 200.
Preferably, the assembly platform 403-09 has one or more M5 through holes formed at the center thereof for connecting a vacuum line, so that the lens holder can be tightly attached to the tray of the lens holder by combining the surface adhesion force of the tray.
As shown in fig. 9, an exemplary structure of the beam type assembly structure 500 mainly includes a double-rotor motor 501, and a suction structure 502 and a suction structure 503 which are respectively installed on the left and right end sides. The two material suction structures are fixedly installed in the sliding track 504 of the double-rotor motor 501, and the two material suction structures are respectively used for sucking and assembling the lenses conveyed from the corresponding stations at the left and right end sides. Due to the design, the double stations do not interfere with each other. In a preferred example, the two suction structures on the left and right sides are similar in configuration, and in practical implementations, only the linear die set direction sometimes differs.
Specifically, the double-rotor motor 501 is used for moving and driving the material to move in the X direction. A specific exemplary configuration of such a suction structure is shown in fig. 10, and any suction structure 502 is provided with a linear module 502-01 for movement of the nozzle structure in the Z direction as shown in the figure. The material suction structure is also provided with a pressure maintaining cylinder 502-03 for ensuring the constancy of the assembling pressure when the lens and the lens seat are assembled. The bottom of the pressure maintaining cylinder 502-03 is further provided with a floating joint 502-04 for ensuring that the pressure maintaining cylinder does not have a clamping fault during operation.
In addition, two linear guide rails 502-02 are provided for guiding the front suction nozzle. The front section of the suction nozzle is connected with hollow motors 502-06, and the hollow motors 502-06 are matched with a positioning camera to keep the assembly angles of the lens and the lens base consistent. The rear ends of the hollow motors 502-06 are provided with bearing pipe joints 502-05 for connecting a vacuum air source.
In a preferred example, the lower end of the hollow motor 502-06 is a force-bearing structure of the suction nozzle, which is composed of a central shaft 502-07, an angular contact bearing 502-08, a deep groove ball bearing 502-09, a centering structure 502-10 and the suction nozzle 502-11. The central shaft 502-07 is used for bearing the hollow motor and the suction nozzle, the angular contact bearing 502-08 is used for bearing the axial force generated when the lens is assembled, the deep groove ball bearing 502-09 is used for increasing the rotation coaxiality, and the centering structure 502-10 is used for adjusting the coaxiality of the suction nozzle 502-11 and the hollow motor 502-06 in working.
Preferably, the suction nozzle 502-11 and the centering structure 502-10 are replaceable structures, and the suction nozzle can be replaced according to different lenses.
An exemplary configuration of a direct-lit camera configuration 600 is shown in fig. 11, which may generally include an integral optical inspection system consisting of a light source 606, a lens 605, and a camera 604. The optical detection system is fixed on a rotation adjustment platform 603, and the rotation adjustment platform 603 is mainly used for avoiding the problem that the Z-axis optical path is not vertical due to the reasons of processing, assembling and the like. The rotation adjusting platform 603 is also fixedly mounted on a Z-direction adjusting portion 602, which is mainly used for adapting to adjustable lenses with different optical depths of field. On this basis, the entire optical detection system is fixed to a Y-direction adjustment portion 601 for solving the Y-axis positional deviation occurring during the assembly. In some implementations, a set of such photographing structures is mounted on the respective transportation platforms of the lens and the lens holder tray, wherein the optical detection system arranged above the lens mainly plays a role in positioning and identifying the dotting lens, and the photographing structures above the lens holder mainly play a role in positioning the lens holder.
An exemplary configuration of the direct photographing structure 700 is shown in fig. 12, and the structure is mainly used for recognizing the positioning position of the lens sucked by the beam assembly structure 500 from the lens transport structure 300 and feeding back to the optical detection system for position compensation. Similarly, the optical detection system of the imaging structure mainly comprises a light source 701, a lens 702 and a camera 703, the whole optical detection system is fixed on a Z-direction adjusting part 704, similarly to the direct-type imaging structure 600, the Z-direction adjusting part 704 is mainly an adjustable lens for compensating the position of the camera 703 in the Z direction and adapting to different depth of field requirements, and the whole optical detection system is mounted on a Y-direction adjusting part which is mainly used for compensating possible offset of the camera 703 in the Y direction.
Referring to fig. 13 and 14, more specifically, the lens assembling apparatus of the present invention adds the optical detection system to complete the function of detecting defects of the lens and/or the lens holder based on the automatic assembling of the lens product, thereby ensuring the product yield of the subsequent assembling process. In the embodiment of the present invention, the detection action performed on the lens and the lens base by using the optical detection system can be embodied in detail by an assembly method:
after the lens material tray and the microscope base material tray are respectively loaded into the respective corresponding portable bins to complete the loading, the lens material tray and the microscope base material tray are respectively transmitted to the lens transportation platform 100 and the microscope base assembly platform 200 under the driving of the motor mechanism by being installed on the respective bin bottom plates.
The lens tray and the lens holder tray are respectively clamped by the corresponding assembly platform and transferred to the material suction position corresponding to the cross beam type assembly structure 500.
In this transportation process, the direct-type camera 600 performs photographing positioning and optical recognition on the lens elements carried in the lens trays, identifies the lenses in the trays that are not point-marked (or generally called "dotting") (that is, the dotted trays are not transported to the beam assembly structure 500 for assembly), positions the lenses, and then performs fine adjustment on the assembly platform on the lens transport structure 300 through the light source detection system.
The double-mover motor 501 on the beam assembly structure 500 mechanically moves to a position right above the lens tray to perform the lens sucking action. Meanwhile, when the mirror base tray is transported on the mirror base transportation structure 400, the direct type photographing structure 600 mechanically performs positioning photographing and position compensation on the mirror base tray.
After the material suction action is completed, the double-rotor motor drives the material suction structure 502 to mechanically move to the position above the straight upper shooting structure 700 between the lens transportation structure 300 and the lens base transportation structure 400 so as to perform positioning shooting on the lens and perform position compensation. Then, the assembly platform carries the lens to mechanically move to the upper part of the lens base assembly platform 403 to assemble the lens to the lens base;
after the lens bases on the entire lens base tray are assembled, the lens base tray is automatically transported to the portable bin 201 by the lens base transport structure 400, and the next lens is assembled to the lens base tray.
After the entire portable storage bin 201 is filled with the assembled lens holder tray, the sensing sensor 206 senses that the set threshold has been exceeded and generates an electrical signal to alert the unloading.
On the basis of the above-described embodiments, a lens assembling apparatus assembly 800 may be provided. As shown in fig. 15, the exemplary main frame structure of the equipment assembly can be mainly divided into an upper frame and a lower frame spliced with the upper frame, and the lower frame is composed of a square steel frame 804 (which may include a sheet metal frame structure, for example). At the bottom of the lower housing are mounted casters/feet 806 for stationary and mobile handling of the equipment. Preferably, the upper frame is mainly composed of an aluminum frame (for example, an acrylic plate may be inserted) 805. The display 802 is installed on the front part of the upper frame, and the operation buttons 803 are installed on the front part of the lower frame corresponding to the display. Safety warning lamps 807 are respectively installed on two sides of the top of the equipment, and an FFU 801 is installed on the top of the equipment and used for preventing external dust from entering the equipment.
Claims (3)
1. A positioning and assembling method of a lens assembling apparatus, characterized in that the lens assembling apparatus comprises:
a lens transport structure, a mirror base transport structure and a beam assembly structure mounted in parallel with each other on a frame structure having a standard plane, wherein the mirror base transport structure provides an assembly platform for assembly between the lens and the mirror base; and
a control module electrically connected to the lens transport structure, the lens mount transport structure and the beam assembly structure, respectively, the method comprising:
the lens transport structure is controlled by the control module to transport the lens tray to a preset position so as to facilitate the absorption of the cross beam type assembly structure, and the lens base transport structure is controlled to take out the lens base tray from the lens base bin and transport the lens base,
the control module controls the cross beam type assembly structure to absorb the lenses from the lens trays conveyed by the lens conveying structure and assemble the lenses to the lens base received and fixed by the lens base conveying structure, and then the lenses are conveyed back to the original lens base bin through the lens base conveying structure.
2. The positioning and assembling method according to claim 1, further comprising:
the lifting cylinder is controlled to ascend to lift the discharging pull rod and the discharging pull rod adjusting block which are arranged oppositely at two sides of the assembling platform, at the moment, the clamping cylinder is in a lifting state,
the discharging pull rod is driven to extend out of the assembling platform along the guide rail, a lens seat material tray separated from the lens seat material bin is received and placed on the discharging pull rod, the screw rod motor is controlled to act so as to stretch the discharging pull rod to be right above the assembling platform, then the lifting cylinder is controlled to descend and reset, the discharging pull rod and the lens seat material tray are made to descend and placed on the upper surface of the assembling platform, the discharging pull rod is controlled to be separated from the material tray to be assembled, at the moment, an electric signal stored on the assembling platform is sensed and received through the optical fiber sensor, the clamping cylinder is judged to be controlled to stretch and contract, under the action of the positioning blocking piece, the positioning of the lens seat material tray in the Y direction is the same, and the positioning in the X direction is determined by the guide groove;
controlling the clamping cylinders which are opposite at two sides of the assembling platform to simultaneously descend and reset so as to tightly press and fix the microscope base material tray on the surface of the assembling platform;
controlling the double-rotor motor to carry the lens to move in the X direction, and controlling the suction nozzle structure to move in the Z direction through the linear module arranged on the suction structure so as to suck and convey the lens for assembling a lens base material tray;
after the assembly is completed, the clamping cylinder is controlled to lift, and the lifting cylinder is controlled to lift the screw rod motor so as to convey the microscope base material disc out of the current assembly platform, and the microscope base material disc is arranged in the microscope base material bin under the synchronous mechanical driving effect of the microscope base material bin lifting mechanism.
3. The positioning and assembling method according to claim 2, further comprising:
controlling the straight-upward shooting structure to respectively identify the lens transportation structure, the lens conveyed on the lens base transportation structure, defective products of the lens base and coordinate positioning identification so as to drive coordinate fine adjustment of the lens transportation structure and the lens base transportation structure; and
and controlling the direct type shooting structure to recognize the coordinate positioning of the cross beam type assembly structure sucking the lens from the lens transportation structure and performing corresponding coordinate position compensation by combining the lens base transportation structure so as to perform accurate positioning of assembly.
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| CN202010331159.7A CN111618547A (en) | 2020-04-24 | 2020-04-24 | Positioning and assembling method of lens assembling equipment |
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| CN113731740A (en) * | 2021-09-16 | 2021-12-03 | 深圳市鑫锐华自动化设备有限公司 | Automatic lens kludge is glued to point |
| CN113953811A (en) * | 2021-07-28 | 2022-01-21 | 深圳市新创佳光电科技有限公司 | Improve intelligent equipment platform of structure in a poor light of home key light leak |
| CN114559247A (en) * | 2022-02-24 | 2022-05-31 | 成都美数科技有限公司 | Assembly equipment for radio frequency front end of ultra-wideband receiver |
| CN115351754A (en) * | 2022-10-20 | 2022-11-18 | 歌尔股份有限公司 | Lens assembling equipment |
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Application publication date: 20200904 |