Lens automatic centering structure and lens ink coating equipment

Abstract

The utility model relates to a lens automatic centering structure and a lens ink coating device, the lens automatic centering structure comprises a mounting base plate and a cam, the mounting base plate is provided with a guide rail, the guide rail is provided with a pair of slide blocks, the pair of slide blocks are respectively provided with a left connecting plate and a right connecting plate, and the left connecting plate and the right connecting plate are respectively provided with a left centering jig and a right centering jig; the cam is mounted between the left connecting plate and the right connecting plate, and the left connecting plate and the right connecting plate can be moved and opened in opposite directions along the guide rail by driving the cam to rotate; compared with an existing structure, the centering device is simpler, more efficient, more labor-saving, superior in stability, controllable in centering clamping force, high in repeatability centering precision and easy to disassemble, centering efficiency is improved, and operation and follow-up maintenance are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical lens processing and preparation, in particular to an automatic centering structure for lenses and lens ink coating equipment. Background Art

[0002] With the development of society, the application scope of optical lenses has expanded from the initial film cameras, microscopes, telescopes, simple medical devices and other products to digital cameras, laptops, mobile phones, security surveillance cameras, vehicle-mounted visual systems, smart homes and aerial drones, which are closely related to human life. Many optical imaging fields have penetrated, making optical lenses occupy an important position in our daily life. Since the shape and size accuracy of the limiter set on the optical device are not easy to guarantee, it is not easy for the lens and the limiter to fit fully. If the fit is not sufficient, light leakage will occur from the side edge of the lens. This light leakage will interfere with the imaging of the optical device and affect the performance of the optical device. Therefore, an ink coating process is required around the non-working surface of the lens, which can not only improve the fit between the lens and the limiter and reduce the light leakage at the edge of the lens, but also enhance the lens's absorption of edge light and reflected light, reduce the stray light coefficient of the optical system, and make the lens more coordinated and beautiful. Traditional ink coating machines use manual ink coating, which has low production efficiency, poor uniformity, and difficult to ensure quality. Some ink coating equipment has appeared in the prior art to realize the ink coating operation of optical lenses, thereby achieving the purpose of improving processing efficiency and product consistency and reducing harm to personnel. In the process of optical lens processing and preparation and lens assembly, accurate correction of optical lens center positioning is particularly important. Center positioning mostly uses pneumatic method for centering and centering. When centering and centering to adjust lenses of different machine sizes, it is necessary to adjust the concentric position of the centering clamp, and the clamping force is difficult to effectively control, resulting in the inability to effectively improve automation. Therefore, when changing different machine lens processing during the processing, the adjustment operation should have many links that require manual adjustment operation, which is time-consuming and labor-intensive, and the manual adjustment operation has low accuracy, which reduces the overall processing efficiency and leads to the failure to achieve the best use effect and work efficiency in terms of performance. Therefore, there are still many shortcomings. Utility Model Content

[0003] The utility model aims at solving many problems existing in the centering and centering of the current lens ink coating operation, and proposes an automatic centering and centering structure for lenses and a lens ink coating device which can overcome the shortcomings of the prior art.

[0004] The utility model solves the technical problem by adopting the following technical solutions:

[0005] The automatic centering structure of the lens comprises a mounting base plate and a cam, a guide rail is arranged on the mounting base plate, a pair of sliders are arranged on the guide rail, a left connecting plate and a right connecting plate are arranged on the pair of sliders, and a left centering fixture and a right centering fixture are arranged on the left connecting plate and the right connecting plate respectively;

[0006] The cam is installed between the left connecting plate and the right connecting plate, and the left connecting plate and the right connecting plate can be moved to opposite directions along the guide rail and opened by driving the cam to rotate;

[0007] It also includes a reset module, which can cooperate with the cam to rotate so that the left connecting plate and the right connecting plate move closer to or open to each other along the guide rail.

[0008] Furthermore, the reset module includes a spring, and two ends of the spring are respectively mounted on the left connecting plate and the right connecting plate.

[0009] Furthermore, a left cam bearing follower and a right cam bearing follower are respectively installed on the left connecting plate and the right connecting plate. The left cam bearing follower and the right cam bearing follower are respectively on both sides of the cam and in contact with the cam.

[0010] Furthermore, the position where the left connecting plate and / or the right connecting plate is installed with the centering fixture is a restrictive structure, and the restrictive structure restricts the centering fixture from moving toward the outside of the centering product.

[0011] Furthermore, the shapes of the contact surfaces of the left centering jig, the right centering jig and the centering product match the shape of the centering product.

[0012] Furthermore, a left anti-collision block is installed at one end of the guide rail, and a right anti-collision block is installed at the other end.

[0013] Furthermore, a motor is installed on the mounting base plate, and the cam is installed on the rotating main shaft of the motor.

[0014] Furthermore, the contact surfaces between the left centering jig and the right centering jig and the centering product are in a section shape or a V shape.

[0015] The lens ink coating device comprises the above-mentioned lens automatic centering structure.

[0016] The advantages and positive effects of the utility model are:

[0017] 1. The centering structure of the utility model can be used to center and align various lens shapes such as diamond lenses and circular lenses and lens assemblies of different shapes. The centering and centering are brought together and separated by a cam, thereby realizing the centering and centering of the centering product. Compared with the existing structure, the structure is simpler, more efficient and labor-saving, with superior stability, controllable centering clamping force, high repeatability and centering accuracy, and easy to disassemble, which not only improves the centering efficiency, but also facilitates operation and subsequent maintenance;

[0018] 2. The lens inking device of the present invention can better center the lens, and the Z-axis material storage mechanism configured in the inking device can move up and down according to demand, realizing the dual functions of taking and collecting materials according to needs, and the material bin has a multi-layer structure, realizing layer-by-layer storage of materials and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for the purpose of explanation and are not intended to limit the scope of the utility model. In addition, unless otherwise specified, these drawings are only intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0020] Figure 1 It is a structural schematic diagram of the lens ink coating device of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure on the machine platform of the lens ink coating equipment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the X-axis moving mechanism of the lens ink coating device of the utility model;

[0023] Figure 4 This is a structural schematic diagram of the automatic centering structure of the lens of the utility model after the product is centered;

[0024] Figure 5 This is a structural schematic diagram of the automatic centering structure of the lens of the utility model in an open state;

[0025] Figure 6 It is an exploded schematic diagram of the automatic centering structure of the lens of the utility model;

[0026] Figure 7 It is a schematic diagram of the cam motion state of the automatic centering structure of the lens of the utility model;

[0027] Figure 8 It is a schematic diagram of the cam motion state of the automatic centering structure of the lens of the utility model;

[0028] Fig. 9It is a structural schematic diagram of the Z-axis material storage mechanism of the lens ink coating device of the utility model;

[0029] Fig.10 It is a structural schematic diagram of the A-axis rotating shaft device of the lens ink coating equipment of the utility model;

[0030] Fig.11 It is a structural schematic diagram of the Y-axis carriage mechanism of the lens ink coating device of the utility model;

[0031] Fig.12 It is a structural schematic diagram of the ink coating manipulator of the lens ink coating device of the utility model; DETAILED DESCRIPTION

[0032] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked in only one place in the same drawing.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0034] Example 1

[0035] like Figure 1 , 2 As shown, the lens ink coating device provided in this embodiment includes a frame 12 and a platform 5; the frame 12 is arranged below the platform 5, and the platform 5 is provided with an X-axis moving mechanism 1, a Y-axis transporting mechanism 6, a T-axis pick-and-place device 10, an ink coating device 3, and a Z-axis material storage mechanism 11, wherein the Z-axis material storage mechanism 11 is arranged on the frame 12 or the bottom surface of the platform 5, or the frame 12 and the platform 5 are mutually perpendicular and extend from one side of the platform 5, and its fixing method is not limited by this description, but any method that can meet the actual requirements can be used; the ink coating device 3 includes an A-axis rotating shaft device 13 arranged on the platform, and a lens automatic centering structure 2 and an ink coating robot 18 arranged on either side of the A-axis rotating shaft device 13. Among them, a housing can be placed on the platform 5, and the four sides of the housing can be opened to form an open space, or closed to form a closed space, and the housing covers all the devices, structures, mechanisms on the platform 5 and the inside of the housing.

[0036] Specifically, Figure 3As shown, the X-axis moving mechanism 1 includes two side pillars 21 fixed on the machine table 5 and a rectangular frame 20 supported by the two side pillars 21. The shape and length of the rectangular frame 20 are not limited by the description, and any shape that can meet the actual requirements can be used. The function of the X-axis moving mechanism 1 is to act on the transport of lenses between the Y-axis shipping mechanism 6 and the A-axis rotating shaft device 13. As long as the existing products or mechanisms that can achieve this function are used, the specific structure or shape is not limited. A first fixed base 22 is provided in the rectangular frame 20, and the double guide slider is connected to the T-axis pick-up and placement device 10 through the first fixed base 22. The first fixed base 22 is provided with a T-axis pick-up and placement device 10 used in conjunction with the X-axis moving mechanism 1; wherein the T-axis pick-up and placement device 10 is used to pick up and place lenses to be coated with ink and lenses after ink coating. The currently disclosed pick-up and placement devices in the art can be used, as long as the pick-up and placement of lenses to be coated with ink and lenses after ink coating can be achieved, without being restricted to specific structures or shapes.

[0037] like Fig.11As shown, the Y-axis transport mechanism 6 includes a support plate 623, which is divided by the Z-axis material storage mechanism 11. The front end of the support plate 623 is cut into a left support plate 623-2 and a right support plate 623-1. The left support plate 623-2 is used to carry the first material plate 8, on which the first material plate 8 is loaded with a first material tray 15 of unprocessed lenses, and the right support plate 623-1 is used to carry the second material plate 9, on which the second material plate 9 is loaded with a second material tray 16 of processed lenses; the support plate 623 is fixedly connected to the third connecting plate 601 below it, and a protective cover 600 passes through the middle of the two, and the machine platform A front mounting plate 608 and a rear mounting plate 621 are fixedly arranged on the top, and the front and rear ends of the protective cover 600 are fixedly connected to the front mounting plate 608 and the rear mounting plate 621, respectively. A double guide rail slider 616 is arranged between the front mounting plate 608 and the rear mounting plate 621, and both ends of the middle bottom of the third connecting plate 601 are installed on the double guide rail slider 616, and the double guide rail slider 616 is arranged on the mounting side plate 606. Of course, it is not limited by this description, and any method that can meet the actual installation requirements is acceptable. A pair of mounting side plates 606 are fixedly arranged on the machine table 5 and connected to the front mounting plate 608 and the rear mounting plate 621. After the installation, the plate 621 is formed into a rectangular shape or a square shape, which is of course not limited by the present description, and any method that can meet the actual requirements can be used. The middle bottom of the third connecting plate 601 is connected to the fixed block 602, and a rotatable first lead screw 618 is provided between a pair of mounting side plates 606. One end of the first lead screw 618 is provided with a first support seat 620 that supports the first lead screw 618, and the other end is provided with a first fixing seat 613 that fixes the first lead screw 618. A lead screw nut 605 that can rotate and move with the first lead screw 618 is provided on the first lead screw 618, and the lead screw nut 605 can rotate and move with the first lead screw 618. 5 is connected to the fixed block 602, the connecting wheel set at the front end of the rotatable first lead screw 618 is connected to the first motor 612 through the connecting belt 611, the support plate 623 drives the connecting belt 611 to rotate through the first motor 612, the rotatable first lead screw 618 rotates, drives the fixed block 602 connected to the lead screw nut 605 to move, the fixed block 602 drives the third connecting plate 601 to move so as to move the support plate 623, the moving position of the support plate 623 is relatively horizontal with the Y-axis transport mechanism 6 and the Z-axis storage mechanism 11 extending from the cutout on one side of the machine table 5, so as to realize automatic feeding.

[0038] like Fig. 9As shown, the Z-axis material storage mechanism 11 includes a linear guide rod 303, a linear bearing seat 308, a second lead screw 305, a second motor 310, a reducer 309, a fixed base plate 306, a fixed base 312, and a reinforcing plate 313. The Z-axis material storage mechanism 11 is a three-bin structure, with the three bins being two large and one small. The lead screw nut is arranged on the bottom surface of the small bin in the middle of the material storage bin, the lead screw fixing seat 319 is arranged on the fixed base plate 306, the bottom surface of the fixed base plate 306 is provided with a fixed base 312, and the fixed base 312 is provided with a reducer 309, one end of the reducer 309 is connected to the second lead screw 305, and the other end is connected to the second lead screw 305. The motor 310 is connected, and the second lead screw 305 passes through the lead screw fixing seat 319, the fixed bottom plate 306, and the lead screw nut in sequence, and the end thereof is located inside the middle small warehouse 302. The second motor 310 drives the reducer 309 to drive the second lead screw 305 to rotate to make the storage warehouse rise and fall, so as to realize the movement of the storage warehouse to any position up and down. A left large warehouse 300 and a right large warehouse 301 are respectively arranged on both sides of the middle small warehouse 302, and the left large warehouse 300 is a material taking warehouse. A first linear guide rod 303 is fixedly arranged under the material taking warehouse, and the first linear guide rod 303 passes through the fixed bottom plate 306 and is fixedly connected to the reinforcing plate 313, wherein, The first linear guide rod 303 on the fixed bottom plate 306 is provided with a first flange linear bearing 308, and the first linear guide rod 303 on the surface of the fixed bottom plate 306 and the reinforcing plate 313 is also provided with a first anti-collision sleeve 311. The right large bin 301 is a material receiving bin, and a second linear guide rod 303-1 is fixedly provided below the material receiving bin. The second linear guide rod 303-1 passes through the fixed bottom plate 306 and is fixedly connected to the reinforcing plate 313. The second linear guide rod 303-1 passing through the fixed bottom plate 306 is provided with a second flange linear bearing 308-1, and the surface of the fixed bottom plate 306 and the reinforcing plate 313 is provided with a first anti-collision sleeve 311. A second anti-collision sleeve 311-1 is also installed on the second linear guide rod 303-1, and the fixed base plate 306 is fixed to the frame 12, and the fixed rear extension extends out from the notch on one side of the machine table 5. The fixing method is not limited by this description, and any method that can meet the actual requirements can be used; the first material plate 8 and the second material plate 9 of the Y-axis consignment mechanism 6 follow the pallet 623 into the left large warehouse 300 and the right large warehouse 301, and then the first material plate 8 and the second material plate 9 are dragged out and dragged in through a set action mode. Of course, the left large warehouse 300 can also be a material receiving warehouse, and the right large warehouse 301 can be a material taking warehouse, and any method that can meet the actual requirements can be used.When the second motor 310 rotates, it drives the reducer 309 to rotate, thereby rotating the second screw 305, and the material bin moves along the second screw. The linear guide rod guides the material bin, and the reinforcing plate 313 is provided with a space for the second motor to pass through, so that when the linear guide rod moves, it drives the reinforcing plate to move up and down, and drives the upper storage bin to rise and fall; at this time, one end of the second screw rod 305 extends or retracts inside the middle small bin 302 to realize the rising and falling of the storage bin. The storage bin is provided with more than one layer of material plates that can be taken out or put in one by one. The material plates are used to carry the material tray and the lenses placed in the material tray. A first origin coordinate switch 318 of the moving position is provided between the fixed bottom plate 306 of the storage bin and the reinforcing plate to control the lifting origin coordinates and the moving distance.

[0039] like Fig.10 As shown, the A-axis rotating axis device 13 includes a third motor 353. The physical form of the third motor 353 is a through hole in the center of the main axis. Threads are arranged at the front and rear ends of the through hole. The threads can be either internal threads or external threads, and are not limited by this description or can be any threads that meet actual requirements; a second origin coordinate switch 352. The center of the spindle 351 is a through hole, and a suction fixture 350 is set at the top of the spindle 351. The spindle 351 passes through a spindle sleeve 356 with a bearing inside and locked with a bearing lock nut. The spindle sleeve 356 is connected to the spindle base 358, and then the spindle position is locked by the spindle lock nut. The tail end of the spindle 351 is a thread, which is screwed into and locked with the front thread of the spindle of the third motor 353. The thread at the tail end of the spindle of the third motor 353 can be an external thread or an internal thread, which is not limited by this description or can be said to be any that meets actual requirements; the third motor 353 is set on a fixed base 355 on the bottom surface of the machine table 5. If it is a round lens, when the suction nozzle sucks the lens to be inked, the lens is adjusted by the automatic centering and centering structure of the lens. The center position accuracy is achieved by vacuuming the lens on the suction nozzle on the rotating shaft through the central through hole at the tail end of the third motor 353. At the same time, the rotation of the third motor 353 drives the rotating shaft and the lens on the suction fixture 350 to rotate together, ensuring the stable completion of the inking process. If the rhombus lens is inked, the center position accuracy of the lens is adjusted by the lens automatic centering structure 2. The lens on the suction fixture 350 on the rotating shaft is vacuumed through the central through hole at the tail end of the third motor spindle. The A-axis rotating shaft device 13 sets the designated edge inking point of the rhombus lens to position the rotation angle to ink the lens. The A-axis rotating shaft device 13 is vertically arranged on the machine table 5 with the top of the suction fixture 350 as the top surface.

[0040] Among them, the A-axis rotating shaft device is used to place the lenses to be inked and the lenses that have been inked. The existing rotating shaft device can be used, and the device in the above-mentioned embodiment can also be used. As long as it can achieve the function of placing the lenses to be inked, it can be used in conjunction with the automatic centering and positioning structure of the lenses.

[0041] After the T-axis pick-up and placement device 10 reaches the designated material tray position in the Y-axis consignment mechanism 6 through the X-axis moving mechanism 1, the T-axis pick-up and placement device 10 is used to absorb the lens. The lens automatic centering and centering structure 2 is used to adjust the center position of the product to be inked. The A-axis rotating shaft device 13 is used to absorb the fixed lens. When the lens to be inked is absorbed, the lens automatic centering and centering structure 2 centers the lens at the center position. After the centering and centering, the lens automatic centering and centering structure 2 automatically returns to the origin. The A-axis rotating shaft device 13 starts to rotate and drives the lens fixedly adsorbed on the suction fixture 350 to rotate. If the lens is a circular lens, it rotates all the way, but the rotation action mode and rotation speed can be controlled by the control system. If the lens is a diamond lens, it is positioned and rotated according to the set rotation angle to ensure the accuracy of the rotation position while ensuring the smooth progress of the inking work. The inking robot 18 is used to ink the lens to be inked. It should be noted that the T-axis pick-up and placement device 10 can also adopt the currently disclosed products or structures to realize the function of using the T-axis pick-up and placement device 10 to absorb the lens;

[0042] like Fig.12 As shown, the inking robot 18 is arranged on the machine table 5 through the support base plate 509. The rotation angle component 502 in the inking robot 18 includes a motor 515, a linear optical axis 505, a flange linear bearing 503, a fixed seat 508 and a detachable inking connecting rod 506. The fixed seat 508 is arranged on the front end surface of the connecting plate 511, and the rear end surface of the connecting plate 511 is provided with a motor 515. The physical type of the motor 515 can be any one of a stepping motor and a servo motor, as long as it meets the actual functional requirements; the front end surface of the fixed seat 508 is provided with a flange linear bearing 503, and the linear optical axis 505 passes through the center hole of the flange linear bearing 503. One end of the linear optical axis 505 is connected to the motor main shaft through a coupling provided with a third origin coordinate switch 513, and the other end is provided with a detachable inking connecting rod 506. The motor 515 can make the rotation angle of the detachable inking connecting rod 506 more accurate and stable.

[0043] When working, the inking robot 18 drives the rotating angle component 502 by making two-dimensional movement through the left-right moving module 501 and the up-down moving module 500. The left-right moving module 501 and the up-down moving module 500 can adopt existing structures to realize their functions. The motor 515 in the rotating angle component 502 drives the detachable inking connecting rod 506 to rotate the angle. The inking robot 18 sets the trajectory through the control system to adapt to the inking of lenses of various sizes and shapes. It should be noted that the inking robot 18 can adopt the currently disclosed products or structures to realize the inking of the lenses to be inked, or can adopt the device in the present embodiment described above.

[0044] like Figure 4 , 5, 6, 7, and 8, the automatic centering structure of the lens provided in this embodiment includes a mounting base plate 218, a fixing plate 217 is provided on the mounting base plate 218, a guide rail 214 is provided on the fixing plate 217, a left anti-collision block 216 is provided at one end of the guide rail 214, and a right anti-collision block 215 is provided at the other end, and a left correction component 181 and a right correction component 180 are provided on the guide rail 214;

[0045] The left correction assembly 181 includes a left slider 213, which is slidably mounted on a guide rail 214, a left connecting plate 206 is fixed on the left slider 213, a left centering fixture 202 is mounted on the front end of the left connecting plate 206, and a left cam bearing follower 208 is mounted on the rear end of the left connecting plate 206;

[0046] The right correction assembly 180 includes a right slider 212, a right connecting plate 205 is fixed on the right slider 212, a right centering fixture 201 is provided at the front end of the right connecting plate 205, and a right cam bearing follower 207 is provided at the rear end of the right connecting plate 205;

[0047] The left connecting plate 206 and the right connecting plate 205 are fixedly connected to the two ends of the spring 200 by the left spring support 204 arranged on the left connecting plate and the right spring support 203 arranged on the right connecting plate. The tension, torsion or thrust of the spring 200 shall be based on the entity type of the spring 200. The entity of the spring 200 may be a tension spring, a torsion spring or a compression spring, which is not limited by the present description or any entity that can achieve the same function. A mounting base 211 is also provided on the mounting base plate 218, and a motor 219 is installed on the mounting base 211. The motor 219 may be a stepping motor, a servo motor, a stepping motor with a reducer or a servo motor with a reducer, which is not limited by the present description or any entity that can achieve the same function. The rotating spindle of the motor 219 extends along the mounting base, and a cam 210 is provided on the rotating spindle head. The entity of the cam 210 may be any entity of an elliptical, semicircular or rectangular shape or any entity that can meet the requirements of the embodiment. Any shape required by the actual situation can be adopted, and an elliptical cam 210 can be preferred; the cam bearing follower fixed at the tail end of the left connecting plate 206 and the right connecting plate 205 follows the cam 210 on the main shaft of the motor 219 to move. When opening, the motor 219 drives the cam 210 to rotate an angle to open the left connecting component 181 and the right connecting component 180; when closing, the motor 219 drives the cam 210 to rotate an angle with the help of the spring 200 to pull or torsion or thrust the left connecting component 181 and the right connecting component 180 mutually, and an origin coordinate switch 209 is provided on either side of the tail of the left connecting plate 206 or the right connecting plate 205. The origin coordinate switch 209 cooperates with a photoelectric switch to limit the maximum moving distance of the left connecting plate 206 or the right connecting plate 205 to the origin position; the cam bearing follower can be any one of a roller bearing, a needle bearing, a roller screw, and a coated bearing, which is not subject to this restriction, but any one that can meet the actual requirements can be adopted;

[0048] In this embodiment, the front end of the left connecting plate 206 is a restrictive structure, and the restrictive structure is that the front end of the left connecting plate 206 forms a forward baffle structure, and the left centering fixture 202 is installed at the front end of the left connecting plate 206 and its right side is restricted by the baffle structure; in this way, the left centering fixture 202 can be limited to avoid the movement of the left centering fixture 202 when the product is centered; it should be noted that under the premise of frequent replacement of the centering fixture, the reference position point of the centering fixture uses the restrictive structure as the limit position 183 of the reference position to limit the movement of the centering fixture. However, the front end of the left connecting plate 206 may be a restrictive structure or / and the front end of the right connecting plate 205 may also be a restrictive structure, so the limiting position 183 restricting the movement of the centering jig may be on one side of the left connecting plate 206 or on one side of the right connecting plate 205, or the left connecting plate 206 and the right connecting plate 205 may be provided with the limiting position 183 at the same time, or the left connecting plate 206 or / and the right connecting plate 205 may be installed at the position of the centering jig as a non-restrictive structure, which is not limited by this description, and any structure that can meet the actual requirements and the shape of the centering jig may be used;

[0049] In addition, in the present embodiment, the top end of the left centering jig 202 is in a section shape, and the top ends of the right centering jig 201 are in a double V shape or a single-ended V shape. Of course, if the left connecting plate 206 is a non-restrictive structure, the top ends of the left centering jig 202 may also be in a double V shape or a single-ended V shape, or the shape of the top end of the centering jig may be changed according to the centering product to match the shape of the centering product M.

[0050] The automatic centering and aligning structure for lenses provided by the utility model is used for accurately locating the centering and aligning position of the lens to be coated with ink in the ink coating device, so as to better complete the ink coating process, realize the control of the size of the centering clamping force and the higher repeatability of the centering accuracy and the automatic control and adjustment method, greatly improve the production efficiency, save the time-consuming and labor-intensive manual adjustment and tedious steps, and when replacing lenses of different sizes, the operation of the centering and aligning device only needs to control the position of the closing and separating opening, and when the lenses of the same model have been set and saved in the control system, it is only necessary to repeatedly call the parameters of this model in the control system. The method of this centering and aligning device for the existing ink coating machine is more automated, saves time and labor when adjusting the lenses of different models and sizes, simplifies the operation steps, improves the degree of automation of the ink coating equipment in the centering and aligning link, and improves the ink coating efficiency and quality of the ink coating equipment.

[0051] like Figure 7As shown, in the closed state, the left and right sides of the elliptical cam are divided by a vertical line with an equal relationship, the distance c is equal to the distance d, the cam 210 and the center of the left cam bearing follower 208 and the right cam bearing follower 207 are on the same horizontal line, when the cam 210 rotates left or right by an angle, it drives the left cam bearing follower 208 to move in the direction of b and the right cam bearing follower 207 to move in the direction of a, the distance c needs to move and the distance d needs to move, this distance is set by the product size to achieve the opening of the centering and centering.

[0052] like Figure 8 As shown, in the open state, the maximum moving distance c is equal to the maximum moving distance d, and the centers of the cam 210, the left cam bearing follower 208 and the right cam bearing follower 207 are on the same horizontal line. The maximum moving distance c is equal to the maximum moving distance d. When the rotation angle of the cam 210 is in the initial position, the cam 210 rotates so that the left cam bearing follower 208 and the right cam bearing follower 207 are relatively pulled back by the spring 200. The left cam bearing follower 208 follows the elliptical cam to move in the direction a, and the right cam bearing follower 207 follows the elliptical cam to move in the direction b. This distance is set according to the product size to achieve centering and centering.

[0053] During operation, if a circular lens is inked, the left centering fixture 202 at the front end of the left connecting plate 206 in the automatic centering structure of the lens is in a section shape, and the right centering fixture 201 at the front end of the right connecting plate 205 is in a double V-shape or a single-end V-shape at both ends. The left centering fixture 202 at the front end of the left connecting plate 206 and the right centering fixture 201 at the front end of the right connecting plate 205 are driven by a cam to move closer to and open each other to clamp the centering lens. Under the premise of frequent replacement of the centering fixture, the reference position point of the centering fixture is a limit position 183 that limits the movement of the centering fixture as the reference position. The limit position 183 that limits the movement of the centering fixture can be the left connecting plate 206. One side of the connecting plate, or the right connecting plate, or the left connecting plate 206 and the right connecting plate 205 are provided with a limiting position 183 at the same time, or the left connecting plate 206 or / and the right connecting plate 205 are installed at the position of the centering jig as a non-restrictive structure, which is not limited by this description, but can meet the actual requirements and the shape of the centering jig. After the reference contact point is adjusted according to the radius size of the lens, the right centering jig 201 at the front end of the right connecting plate 205 is pushed forward to contact the upper lens and fix the right centering jig 201. The right centering jig 201 only needs to be adjusted once to the specified position to meet the requirements of lenses of different sizes. When the initial lens size is adjusted, the distance of the closing and separation opening size of the centering structure can be set according to the different lens sizes. After setting the current size, save it. When processing lenses of the same size in the future, you only need to call the parameters repeatedly in the control system.

[0054] During operation, if a diamond-shaped lens is inked, the left centering jig 202 and the right centering jig 201 in the lens automatic centering and centering structure are close to each other and move relative to the open center line position. The left centering jig 202 at the front end of the left connecting plate 206 is in a single or double end in a cut-off shape or a semicircular arc, V-shape, L-shape, U-shape or a special shape, which is not limited by the description of the shape, but any shape that can meet the actual requirements is acceptable. The right centering jig 201 at the front end of the right connecting plate 205 is in a single or double end in a cut-off shape or a semicircular arc, V-shape, L-shape, U-shape or a special shape, which is not limited by the description of the shape, but any shape that can meet the actual requirements is acceptable. Under the premise of frequent replacement of the centering jig, the reference position point of the centering jig is restricted by the restricted centering jig. The limit position 183 used as the reference position is moved. The limit position 183 limits the movement of the centering jig. It can be on one side of the left connecting plate 206, or on one side of the right connecting plate 205, or the left connecting plate 206 and the right connecting plate 205 are provided with the limit position 183 at the same time, or the left connecting plate 206 or / and the right connecting plate 205 are installed at the position of the centering jig. It is not limited by this description. Any structure that can meet the actual requirements and the shape of the centering jig is acceptable. After the reference contact point is adjusted according to the radius size of the lens, the right centering jig 201 on the front end of the right connecting plate 205 is pushed forward to contact the upper lens and fix the right centering jig. The right centering jig 201 only needs to be adjusted once to the specified position to meet the requirements of lenses of different sizes. When the initial lens size is adjusted, the distance of the closing and separation opening size of the centering structure can be set according to different lens sizes. After setting the current size, save it. When processing lenses of the same size in the future, you only need to call the parameters repeatedly in the control system.

[0055] Example 2

[0056] Specifically, when the diamond-shaped lens is inked, the X-axis moving mechanism 1 is set to drive the position of the T-axis pick-up and placement device 10 to realize automatic control, the Y-axis transport mechanism 6 is set to move and the position of the in-and-out material plate is set to realize automatic control, the T-axis pick-up and placement device 10 is set to take and receive material positions to realize automatic control, the centering structure 2 is set to realize automatic control, the A-axis rotating shaft device 13 is set to locate and speed to realize automatic control, and the inking trajectory position of the inking robot 18 is set to realize automatic control, and the whole process is realized automatically. Automatic control; put in the software (actual sponge) that has been cut to be suitable for the current diamond-shaped lens to be processed and can absorb and lock the ink in the inking, the single-action inking robot 18 and the A-axis rotating shaft device 13 cooperate with the centering and centering structure 2 to test the coating effect. The test coating effect is qualified. After all adjustments are completed, the origin position is manually reset, and the pre-prepared diamond-shaped lens to be processed is placed in the special diamond-shaped material tray. After it is full, the material tray is placed on the fixed position of the material plate, and then the material plate is placed on the supporting layer in the storage bin device. After the placement is completed in sequence, everything is ready and the equipment is started.

[0057] First, the second motor 310 of the Z-axis material storage bin device 11 drives the reducer 309 to drive the second screw rod 305 to move up and down through the transmission, so as to adjust the height of the material storage bin of the Z-axis material storage bin device 11. After the Y-axis shipping mechanism 6 moves into the shipping position of the specified number of layers in the material storage bin of the Z-axis material storage bin device 11 according to the set position, the material bin of the Z-axis material storage bin device 11 places the material plate according to the set position. At this time, the material storage bin of the Z-axis material storage bin device 11 descends to the specified position, and the material plate is supported by the Y-axis shipping mechanism 6 waiting below, and the current placement position of the material plate is temporarily fixed by the positioning pin in the Y-axis shipping mechanism 6. Then the Y-axis shipping mechanism 6 moves the Z-axis material storage bin The material plate in the storage bin of the device 11 is lifted out to the set specified position, and then the X-axis moving mechanism 1 and the picking position in the T-axis picking and placing device 10 on the X-axis moving mechanism 1 move through the set specified position to absorb the lens in the first material tray 15 in the first material plate 8. After absorbing the lens, the X-axis moving mechanism 1 drives the T-axis picking and placing device 10 to move so that the lens absorbed by the picking position in the T-axis picking and placing device 10 moves to just above the A-axis rotating shaft device 13, and then the T-axis picking and placing device 10 descends. After descending to the set position, the A-axis rotating shaft device 13 absorbs the lens on the picking position in the T-axis picking and placing device 10 through the suction nozzle fixture 350 to absorb and fix the lens. After the A-axis rotating axis device 13 is sucked, the material picking position in the T-axis picking and placing device 10 returns to the origin, and then the X-axis moving mechanism 1 and the material picking position in the T-axis picking and placing device 10 on the X-axis moving mechanism 1 move through the set specified position to suck the lens in the first material tray in the first material plate. After sucking the lens, the X-axis moving mechanism 1 drives the T-axis picking and placing device 10 to move to the waiting position, and waits at the waiting position. After the lens is fixed on the nozzle fixture 350 in the A-axis rotating shaft device 13, the centering structure 2 drives the cam 210 to rotate the angle through the motor 219 to complete the precise centering positioning of the lens position; after the centering positioning is completed, the centering structure 2 returns to the original position, and the A-axis rotating shaft device 13 drives the lens on the nozzle fixture 350 in the A-axis rotating shaft device 13 to rotate the angle according to the actual set rotation mode or the combination of angle rotation and uniform speed rotation. At this time, the inking robot 18 applies ink to the lens. After the inking is completed, the X-axis moving mechanism 1 in the waiting position drives the receiving position in the T-axis picking and placing device 10 to move to the positive position of the A-axis rotating shaft device 13. After it is above, it is lowered through the T-axis pick-and-place device 10. After it is lowered to the set position, the lens after inking is sucked through the receiving position in the T-axis pick-and-place device 10. While sucking the lens, the suction nozzle of the A-axis rotating shaft device 13 stops vacuum suction. After the suction of the receiving position is completed, the receiving position in the T-axis pick-and-place device 10 returns to the origin. At this time, the X-axis moving mechanism 1 drives the picking position in the T-axis pick-and-place device 10 to move to just above the A-axis rotating shaft device 13, and then it is lowered through the T-axis pick-and-place device 10. After it is lowered to the set position, the A-axis rotating shaft device 13 sucks the lens on the picking position in the T-axis pick-and-place device 10 through the suction nozzle fixture 350 to suck and fix the lens.After the A-axis rotating axis device 13 is sucked, the material picking position in the T-axis picking and placing device 10 returns to the origin, and then the X-axis moving mechanism 1 and the material receiving position in the T-axis picking and placing device 10 on the X-axis moving mechanism 1 move to the second material tray 16 in the second material plate 9 of the Y-axis consignment mechanism 6 to receive the material, and the material picking and receiving process is circulated in sequence for inking. When all the lenses to be inked in the material tray in the first material plate are taken out and all the lenses to be inked in the material tray in the second material plate are received and inked, the Y-axis consignment mechanism consigns and drags the material plate to the specified supporting layer in the storage bin of the Z-axis storage bin device 11. After the dragging is completed, the Y-axis consignment mechanism 6 returns to the waiting position. After arriving at the waiting position, the storage bin of the Z-axis storage bin device 11 moves down to the upper layer, and the cyclic inking work of the upper layer is performed one by one until all the lenses to be inked in all the storage bins are completed.

[0058] It should be noted that the number of the first material tray 15 in the first material plate 8 and the second material tray 16 in the second material plate 9 is multiple material trays, and the shape of the material trays is not limited by this description. Any placement method and material tray shape that meet actual requirements are acceptable.

[0059] It is further necessary to explain that the X-axis moving mechanism 1, Y-axis conveying mechanism 6, T-axis picking and placing device 10, A-axis rotating shaft device 13, inking robot 18, Z-axis storage mechanism 11, and lens automatic centering and positioning structure 2 in the present application can all be connected to the control module circuit, and connected to the control module circuit through a touch screen, and automatic control is achieved through the touch screen. Of course, the control module can adopt an existing control circuit or microprocessor, as long as it can achieve action control or joint control of the X-axis moving mechanism 1, Y-axis conveying mechanism 6, T-axis picking and placing device 10, A-axis rotating shaft device 13, inking robot 18, Z-axis storage mechanism 11, and lens automatic centering and positioning structure 2.

[0060] When inking lenses of different shapes, the control parameters are changed through the touch screen so that the control module can adapt to the shape of the lens when controlling the X-axis moving mechanism 1, the Y-axis shipping mechanism 6, the T-axis picking and placing device 10, the A-axis rotating shaft device 13, the inking robot 18, the Z-axis material storage mechanism 11, and the lens automatic centering and centering structure 2.

[0061] The above embodiments describe the present invention in detail, but the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of application of the present invention shall still fall within the scope of the patent coverage of the present invention.

Claims

1. The lens automatic centering structure is characterized by: It includes a mounting base plate and a cam, a guide rail is arranged on the mounting base plate, a pair of sliders are mounted on the guide rail, a left connecting plate and a right connecting plate are mounted on the pair of sliders, and a left centering fixture and a right centering fixture are mounted on the left connecting plate and the right connecting plate respectively; The cam is installed between the left connecting plate and the right connecting plate. By driving the cam to rotate, the left connecting plate and the right connecting plate can be moved to opposite directions along the guide rail and opened.

2. The automatic centering structure for lenses according to claim 1, characterized in that: It also includes a reset module, which can cooperate with the cam to rotate so that the left connecting plate and the right connecting plate move closer to or open to each other along the guide rail.

3. The automatic centering structure for lenses according to claim 2, characterized in that: The reset module comprises a spring, and two ends of the spring are respectively mounted on the left connecting plate and the right connecting plate.

4. The automatic centering structure for lenses according to claim 1, characterized in that: A left cam bearing follower and a right cam bearing follower are respectively mounted on the left connecting plate and the right connecting plate. The left cam bearing follower and the right cam bearing follower are respectively located on both sides of the cam and in contact with the cam.

5. The automatic centering structure for lenses according to claim 1, characterized in that: The position where the left connecting plate and / or the right connecting plate is installed with the centering fixture is a restrictive structure, and the restrictive structure restricts the centering fixture from moving toward the outside of the centering product.

6. The automatic centering structure for lenses according to claim 1, characterized in that: The shapes of the contact surfaces of the left centering jig, the right centering jig and the centering product match the shape of the centering product.

7. The automatic centering structure for lenses according to claim 1, characterized in that: A left anti-collision block is installed at one end of the guide rail, and a right anti-collision block is installed at the other end.

8. The automatic centering structure for lenses according to claim 1, characterized in that: A motor is installed on the installation base plate, and the cam is installed on the rotating main shaft of the motor.

9. The automatic centering structure for lenses according to claim 1, characterized in that: The contact surfaces between the left centering jig, the right centering jig and the centering product are in a section shape or a V shape.

10. Lens ink coating equipment, characterized in that: The invention comprises the automatic centering structure for a lens as described in any one of claims 1 to 9.

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