Rotary contact lens color mold transfer printing equipment

Abstract

The utility model relates to the technical field of contact lens automatic production, in particular to rotary contact lens color mold transfer printing equipment which comprises a feeding and discharging processing unit, a color mold transfer printing full-inspection unit and a rotary feeding mechanism. During transfer printing operation, after the rotary feeding mechanism takes out a to-be-printed color mold from the feeding and discharging processing unit, the to-be-printed color mold is carried into the color mold transfer printing full-inspection unit to be subjected to pattern transfer printing and color difference full-inspection, and finally the to-be-printed color mold is carried into the feeding and discharging processing unit through the rotary feeding mechanism to complete printing operation. According to the utility model, color mold material processing and color mold transfer printing actions are integrated; the integration and miniaturization of equipment are realized; and the transfer printing work station is guided and positioned through the visual guiding assembly, the precision and quality of the transfer printing action are improved, finally defect and chromatic aberration detection is conducted on the transfer printing pattern, the quality of the pattern of the contact lens color mold is overall improved, the efficiency of the transfer printing action of the color mold is improved, and the equipment cost is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of automated production of contact lenses, in particular to a rotary contact lens color mold transfer printing device. Background Art

[0002] Colored contact lenses (cosmetic lenses) have patterns of various colors set on their iris. During the manufacturing process, there are usually many methods for printing patterns on colored glasses, among which color mold (color mold) pad printing is a commonly used method;

[0003] At present, there are many types of contact lens color mold pad printing equipment, but all of them have certain defects and shortcomings; 1. Some equipment pursues cost-effectiveness and adopts equidistant transport mechanism to achieve it, which is relatively simple to implement, but the synchronous printing color does not support visual automatic alignment, and the products produced often have pad printing offset defects; 2. Another type of equipment has a relatively high degree of automation and is equipped with visual automatic alignment function, but its performance in color difference detection is average, and the linear layout equipment is not user-friendly for operation and maintenance. Utility Model Content

[0004] The utility model aims to provide a high degree of automation and a rotary layout.

[0005] , a contact lens color mold pad printing device with integrated pad printing next color difference detection and vision guidance.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] A rotary contact lens color mold pad printing device, comprising a loading and unloading processing unit, a color mold pad printing full inspection unit, and a rotary feeding mechanism for conveying the color mold to be printed between the loading and unloading processing unit and the color mold pad printing full inspection unit;

[0008] The color mold pad printing full inspection unit includes a jig rotating assembly that drives the color mold to be printed, a pad printing station that prints patterns on the color mold to be printed, a visual guidance assembly that assists in positioning the pad printing station, a light curing mechanism that cures the ink, and a color mold full inspection device that detects the pad printing quality;

[0009] The plurality of pad printing stations are equidistantly distributed on the outer side of the fixture rotating assembly, a light curing mechanism is installed on the side of each pad printing station, and a visual guidance component is installed above the pad printing station; a color mold full inspection device is installed on the side of the last light curing mechanism;

[0010] During pad printing operation, the rotary feeding mechanism takes the color mold to be printed from the loading and unloading processing unit, and transports it to the color mold pad printing full inspection unit for pattern pad printing and color difference full inspection, and finally the rotary feeding mechanism transports it to the loading and unloading processing unit to complete the printing operation.

[0011] Furthermore, the loading and unloading processing unit includes a loading mechanism for providing the color mold to be printed, a dust removal mechanism for removing dust from the color mold to be printed, a laser engraving marking mechanism for marking the printed color mold, and a unloading mechanism for collecting the printed color mold;

[0012] Furthermore, the feeding mechanism and the dust removal mechanism are connected through a feeding transfer mechanism, the laser engraving marking mechanism and the unloading mechanism are connected through a unloading transfer mechanism, and the sides of the feeding mechanism and the unloading mechanism are both provided with a transplanting mechanism for color mold transportation;

[0013] Furthermore, the initial end of the loading transfer mechanism is docked with the rotating feeding mechanism, and the initial end of the unloading transfer mechanism is docked with the rotating feeding mechanism;

[0014] Furthermore, the color mold pad printing full inspection unit also includes a surface treatment mechanism, the fixture rotating assembly includes a rotating platform, and a plurality of positioning carriers arranged on the rotating platform at equal intervals; the setting position spacing of the surface treatment mechanism, the pad printing station and the light curing mechanism is the same as the spacing of the positioning carriers;

[0015] Furthermore, the pad printing station includes two pad printing rubber head assemblies, a pad head fine-motion adjustment mechanism for fine-tuning the pad printing rubber head assemblies, a pad printing manipulator for driving the pad head fine-motion adjustment mechanism to move, an ink scraping mechanism for providing ink to the pad printing rubber head assemblies, and a cleaning mechanism; an air blowing structure is also provided on the pad printing rubber head;

[0016] During pad printing, the visual guidance component guides and positions the pad printing robot, and the pad printing robot drives the pad head fine-motion adjustment mechanism and the pad printing rubber head assembly installed at the end of the pad head fine-motion adjustment mechanism to work, and the pad head fine-motion adjustment mechanism fine-adjusts the pad printing rubber head assembly to perform actions; the ink scraping mechanism provides ink for the pad printing action of the pad printing rubber head assembly, and the air blowing structure blows air to the pad printing rubber head assembly and the ink scraping mechanism to control the ink viscosity; after a single pad printing is completed, the cleaning mechanism cleans the pad printing rubber head assembly, and the printed color mold enters the bottom of the light curing mechanism;

[0017] Furthermore, a visual guidance component is correspondingly arranged above each pad printing station; the visual guidance component is a dual-camera layout and is mounted on a rack, wherein one camera is located above the ink scraping mechanism, and the other camera is located above the positioning carrier corresponding to the pad printing station;

[0018] Furthermore, the color mold full inspection device includes a detection transport mechanism, a detection displacement module that drives the detection transport mechanism to move back and forth, an optical detection mechanism, a detection frame, and a detection stand arranged on the detection frame;

[0019] The optical detection mechanism includes a backlight structure, a positive light structure, a detection lifting module for driving the positive light structure to lift and lower, and a visual camera; the detection displacement module and the backlight structure are arranged on the detection frame; the detection lifting module is arranged on the detection frame;

[0020] During the inspection, the rotary feeding mechanism moves the color mold under the last light-curing mechanism to the inspection and transport mechanism, the inspection and transport mechanism adjusts the static posture of the color mold to be tested, the inspection displacement module drives the inspection and transport mechanism to the top of the backlight structure, the inspection lifting module drives the positive light structure to change the positive light illumination height, and the visual camera inspects the color mold to be tested under different lighting environments; after the inspection, the rotary feeding mechanism transfers the color mold to the loading and unloading processing unit;

[0021] Further, the detection and transport mechanism includes a rotating mechanism and a pitch-changing mechanism. The rotating mechanism adopts a detection displacement frame to connect with the detection displacement module. The pitch-changing mechanism is installed at the output end of the rotating mechanism. One end of the detection displacement frame is connected with the output end of the detection displacement module, and the other end is slidably installed on the displacement auxiliary rail. The pitch-changing mechanism includes a pitch-changing frame installed at the output end of the rotating mechanism, a pitch-changing cylinder installed in the pitch-changing frame, and a detection carrier plate slidably installed on the pitch-changing frame. The pitch-changing cylinder drives the detection carrier plate to slide and change the pitch on the pitch-changing frame.

[0022] Furthermore, the pitch-changing cylinder is provided with a group of pitch-changing slides that move relative to each other, and each of the pitch-changing slides is connected to the detection carrier plate by a pitch-changing connecting frame; the detection carrier plate is provided with a pitch-changing guide wheel, and the pitch-changing connecting frame is provided with a pitch-changing guide groove; when the pitch is changed, the pitch-changing guide wheel slides in the pitch-changing guide groove;

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] In actual use, the loading and unloading processing unit performs loading and unloading related processing of the color mold, and the rotary feeding mechanism sends the color mold to be printed into the color mold pad printing full inspection unit. In the color mold pad printing full inspection unit, the color mold to be printed is rotated and transferred in the jig rotating component, and the pad printing station performs multiple pattern printing. During the printing process, the visual guidance component is used to guide the movement and assist the positioning of the pad printing station, and a light curing mechanism is set after each pad printing station to quickly cure the pattern ink to ensure the quality of the pattern pad printing; and after the last light curing is completed, the color mold full inspection device is used to perform online detection of defects and color differences of the printed color mold; after the inspection is completed, the rotary feeding mechanism transports the printed color mold to the loading and unloading processing unit for subsequent material collection processing.

[0025] The rotary contact lens color mold pad printing equipment combines the color mold material processing and the color mold pad printing action by combining the rotary conveying action with the rotary turnover action, realizes the integration and miniaturization of the equipment, and guides and positions the pad printing station through the visual guidance component to improve the accuracy and quality of the pad printing action, and finally detects defects and color differences of the pad printing pattern, thereby improving the overall quality of the contact lens color mold pattern, improving the efficiency of the color mold pad printing action, and optimizing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a side view schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the loading and unloading processing unit of the utility model;

[0028] Figure 3 This is a structural schematic diagram of the color mold pad printing full inspection unit of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the pad printing station of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the micro-adjustment mechanism of the rubber head of the utility model;

[0031] Figure 6 This is a structural cross-sectional view of the pad printing rubber head assembly of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the color mold full inspection device of the utility model;

[0033] Figure 8 This is a structural side view of the color mold full inspection device of the utility model;

[0034] Fig. 9 It is a structural schematic diagram of the pitch-changing mechanism of the utility model;

[0035] Fig.10 It is an oblique upward schematic diagram of the pitch-changing mechanism of the utility model. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] refer to Figure 1-10As shown, a rotary contact lens color mold pad printing device includes a loading and unloading processing unit 10, a color mold pad printing full inspection unit 20, and a rotary feeding mechanism 30 for conveying the color mold to be printed between the loading and unloading processing unit 10 and the color mold pad printing full inspection unit 20;

[0038] The color mold pad printing full inspection unit 20 includes a jig rotating assembly 21 for driving the color mold to be printed, a pad printing station 23 for printing patterns on the color mold to be printed, a visual guidance assembly 25 for assisting the positioning of the pad printing station 23, a light curing mechanism 24 for curing the ink, and a color mold full inspection device 26 for detecting the pad printing quality;

[0039] The plurality of pad printing stations 23 are equidistantly distributed on the outer side of the fixture rotating assembly 21, and a light curing mechanism 24 is installed on the side of each pad printing station 23, and a visual guide assembly 25 is installed on the top of the pad printing station 23; a color mold full inspection device 26 is installed on the side of the last light curing mechanism 24;

[0040] During the pad printing operation, the rotary feeding mechanism 30 takes the color mold to be printed from the loading and unloading processing unit 10 and transports it to the color mold pad printing full inspection unit 20 for pattern pad printing and color difference full inspection, and finally the rotary feeding mechanism 30 transports it to the loading and unloading processing unit 10 to complete the printing operation.

[0041] The light curing mechanism 24 is a UV ultraviolet curing device, which is used to cure the printed pattern of the front pad printing station 23 to improve the printing quality of the pattern; the rotary feeding mechanism 30 is composed of three groups of gripping mechanisms and a rotary lifting motor mechanism, which is used to transport the color mold, reduce the equipment space occupied by the linear feeding color mold material, and better realize the equipment integration and automation.

[0042] In actual use, the loading and unloading processing unit 10 performs the loading and unloading related processing work in the color mold pad printing operation, and the rotating feeding mechanism 30 sends the color mold to be printed into the color mold pad printing full inspection unit 20. In the color mold pad printing full inspection unit 20, the color mold to be printed is rotated and transferred in the fixture rotating component 21, and then the pad printing station 23 performs multiple pattern printing. During the printing process, the visual guidance component 25 is used to guide the movement and assist the positioning of the pad printing station 23, and a light curing mechanism 24 is set after each pad printing station 23 to quickly cure the pattern ink to ensure the quality of the pattern pad printing; and after the last light curing is completed, the color mold full inspection device 26 is used to perform online detection of defects and color differences of the printed color mold; after the detection is completed, the printed color mold is transported to the loading and unloading processing unit 10 by the rotating feeding mechanism 30 for subsequent material collection processing.

[0043] The rotary contact lens color mold pad printing equipment integrates the color mold concave mold transport action and the color mold pad printing action by combining the rotary transport action with the rotary turnover action, realizes the integration and miniaturization of the equipment, and guides and positions the pad printing station through the visual guidance component to improve the accuracy and quality of the pad printing action, and finally detects defects and color differences of the pad printing pattern, thereby improving the overall quality of the contact lens color mold pattern, improving the efficiency of the color mold pad printing action, and optimizing the equipment cost.

[0044] In this embodiment, the loading and unloading processing unit 10 includes a loading mechanism 11 for providing color molds to be printed, a dust removal mechanism 12 for removing dust from the color molds to be printed, a laser engraving marking mechanism 13 for marking the printed color molds, and a unloading mechanism 14 for collecting the printed color molds; the loading mechanism 11 is connected to the dust removal mechanism 12 through a loading transfer mechanism 16, and the laser engraving marking mechanism 13 is connected to the unloading mechanism 14 through a unloading transfer mechanism 17. The sides of the loading mechanism 11 and the unloading mechanism 14 are both provided with a transplanting mechanism 15 for transporting the color molds; the initial end of the loading transfer mechanism 16 is docked with the rotating feeding mechanism 30, and the initial end of the unloading transfer mechanism 17 is docked with the rotating feeding mechanism 30;

[0045] The feeding mechanism 11 and the unloading mechanism 14 are both material frames composed of multiple material barrels, used to carry the color mold concave mold; the feeding transfer mechanism 16 and the unloading transfer mechanism 17 are both composed of linear modules and fixtures, which play the role of transfer operation; the transplanting mechanism 15 is a lifting mechanical arm for transportation;

[0046] The feeding mechanism 11 is equipped with a color mold concave mold to be printed. The color mold to be printed is transported to the jig at the initial end of the feeding transfer mechanism 16 through the transferring mechanism 15, and the feeding transfer mechanism 16 drives the jig and the color mold to the bottom of the dust removal mechanism 12 for dust removal. After dust removal, the rotating feeding mechanism 30 transports the color mold to the color mold pad printing full inspection unit 20 for pad printing full inspection. After pad printing is completed and the inspection is completed, the rotating feeding mechanism 30 transports the color mold to the jig at the initial end of the unloading transfer mechanism 17, and the unloading transfer mechanism 17 drives the jig and the color mold to the bottom of the laser engraving marking mechanism 13 for laser marking of defective and defective products. After marking, it is transported to the end of the unloading transfer mechanism 17 and transported to the unloading mechanism 14 by the transferring mechanism 15 to complete the unloading, dust removal, marking and receiving operations of the color mold in the loading and unloading parts.

[0047] In this embodiment, the color mold pad printing full inspection unit 20 further includes a surface treatment mechanism 22, and the fixture rotating assembly 21 includes a rotating platform 211 and a plurality of positioning carriers 212 arranged on the rotating platform 211 at equal intervals; the spacing between the surface treatment mechanism 22, the pad printing station 23 and the light curing mechanism 24 is the same as the spacing between the positioning carriers 212;

[0048] The surface treatment mechanism 22 is a corona treatment device, which performs the pre-surface treatment operation of pad printing; the jig rotating assembly 21 is composed of a rotating platform 211 and a plurality of positioning carriers 212. In the present application, there are 5 pad printing stations 23 and 5 photocuring mechanisms 24. Combined with the surface treatment mechanism 22 and the workstations for handling and transfer, a total of 12 positioning carriers 212 are arranged; the 12 positioning carriers are arranged in a circular distribution manner, the first position is the handling and transfer workstation, and then according to the rotation direction of the rotating platform, the surface treatment mechanism 22 and 5 sets of pad printing stations 23 are arranged in sequence at the positioning carriers 212, and a photocuring mechanism 24 is arranged behind each pad printing station 23.

[0049] In this embodiment, the pad printing station 23 includes two pad printing rubber head assemblies 232, a pad head fine-motion adjustment mechanism 233 for fine-tuning the pad printing rubber head assemblies 232, a pad printing robot 231 for driving the pad head fine-motion adjustment mechanism 233 to move, an ink scraping mechanism 235 for providing ink to the pad printing rubber head assemblies 232, and a cleaning mechanism 234; the pad printing rubber head assembly 232 is also provided with an air blowing structure;

[0050] During the pad printing operation, the visual guidance component 25 guides the pad printing manipulator 231 for positioning, and the pad printing manipulator 231 drives the pad head fine-motion adjustment mechanism 233 and the pad printing rubber head component 232 installed at the end of the rubber head fine-motion adjustment mechanism 233 to work, and the rubber head fine-motion adjustment mechanism 233 fine-adjusts the action performed by the pad printing rubber head component 232; the ink scraping mechanism 235 provides ink for the pad printing action of the pad printing rubber head component 232, and the air blowing structure blows air to the pad printing rubber head component 232 and the ink scraping mechanism 235 to control the viscosity of the ink; after a single pad printing is completed, the cleaning mechanism 234 cleans the pad printing rubber head component 232, and the printed color mold enters the bottom of the light curing mechanism 24;

[0051] In actual application, the pad printing robot 231 drives the pad printing rubber head assembly 232 to perform the main action. During the pad printing process, the ink scraping mechanism 235 prepares the ink for the pad printing operation, and the pad printing rubber head assembly 232 is driven by the pad printing robot 231 to the top of the ink scraping mechanism 235 to dip the ink; during the dipping process, the air blowing structure can blow air to the ink scraping mechanism 235 and the pad printing rubber head assembly 232, and the blowing can volatilize the water in the ink, so as to adjust and control the viscosity of the ink; after dipping the ink, the pad printing of the color mold to be printed is carried out; visual guidance The guide component 25 is used to capture the image of the execution end of the pad printing robot 231 to obtain the image information of the ink dipping and pad printing process. The control host processes and feeds back the image information, and further outputs the control signal to the pad head fine-motion adjustment mechanism 233. The pad head fine-motion adjustment mechanism 233 combines with the pad printing robot 231 to further fine-tune the position and height of the two pad printing pad head components 232. After a single pad printing is completed, the cleaning mechanism 234 cleans the pad printing pad head components 232; and then the pad printing work cycle of the next color mold to be printed is carried out;

[0052] The visual guidance component 25 obtains the position information in real time, performs visual guidance, and accurately controls the double-station pad printing rubber head component 232 and fine-tunes the printing color position; in order to adapt to the color mold pad printing of glasses with different printing requirements, the added air blowing structure can realize the control of ink viscosity during the ink dipping process, improve the pattern writing quality and color quality, the overall structure is exquisite, the versatility is strong, and the overall contact lens pad printing quality and efficiency are improved

[0053] In the present embodiment, a visual guidance component is correspondingly arranged above each pad printing station 23; the visual guidance component 25 is a dual-camera layout and is mounted on a frame 251, wherein one camera is located above the ink scraping mechanism 235, and the other camera is located above the positioning carrier 212 corresponding to the pad printing station 23; the dual-camera layout can more accurately obtain the position information of the execution end of the pad printing robot 231, thereby ensuring the accuracy of the movement of the pad printing robot 231 during the ink dipping process and the printing process; and through the auxiliary positioning and guidance of the guiding camera 236, the difficulty of adjusting and debugging the double-station pad printing rubber head component 232 at the execution end of the pad printing robot 231 is further reduced.

[0054] In this embodiment, each of the pad printing rubber head components 232 includes a rubber head sensor 2324 installed on the rubber head fine-motion adjustment mechanism 233, a rubber head fixing seat 2325 arranged at the end of the rubber head sensor 2324, and a pad printing rubber head 2321 installed at the end of the rubber head fixing seat 2325;

[0055] In this embodiment, the air blowing structure includes an air blowing ring 2322 disposed on the rubber head fixing seat 2325 and located on the upper edge of the pad printing rubber head 2321; a plurality of air blowing holes 2323 are formed on the lower end surface of the air blowing ring 2322; the upper ends of the plurality of air blowing holes 2323 are connected and connected to an external air source by an air blowing valve 2326;

[0056] The pad head sensor 2324 is a tensile pressure sensor, which can collect the pad printing pressure applied by the pad printing pad during operation, which helps to improve the transfer quality and display effect of the pattern; the air blowing ring 2322 is connected to the external air source through the air blowing valve 2326, and the air is supplied by the external air source. During the ink dipping process, the external gas is blown out through the air blowing hole 2323 to control the volatilization of water in the ink scraping mechanism 235 and the pad printing pad 2321, and appropriately adjust the ink viscosity, thereby improving the quality of pad printing.

[0057] In this embodiment, the pad printing robot 231 is connected to the pad printing frame 2311 with the pad head fine-motion adjustment mechanism 233, and the pad head fine-motion adjustment mechanism 233 includes a height fine-adjustment slide 2331 vertically installed on the pad printing frame 2311, a first translation slide 2332 horizontally installed on the pad printing frame 2311, and a second translation slide 2333 installed at the execution end of the first translation slide 2332; the execution ends of the second translation slide 2333 and the height fine-adjustment slide 2331 are each installed with a pad printing pad head assembly 232; the pad head fine-motion adjustment mechanism 233 cooperates with the pad printing robot 231 to realize the pad printing pad Double-station control of the component 232; the specific pad printing robot 231 can adjust and control the overall position of the two pad printing rubber head components 232 and the downward pressure stroke during the pad printing operation; and adjust the relative position between the two pad printing rubber head components 232 through the second translation slide 2333 at the execution end of the first translation slide 2332, and adjust the relative height between the two pad printing rubber head components 232 through the height fine-tuning slide 2331; thereby achieving adaptation to the printing effects of various patterns; for the need for double-station operation, it is only necessary to control the height position of one of the horizontal position pad printing rubber head components 232 and the other.

[0058] In this embodiment, the height fine-tuning slide 2331 , the first translation slide 2332 and the second translation slide 2333 are all electric slides; and the pad printing robot 231 is a high-precision Scara robot.

[0059] In this embodiment, the ink scraping mechanism includes a pad printing steel plate 2353, a bottom plate mounting seat 2353 for mounting the pad printing steel plate 2353, a pad printing ink cartridge 2352 that is in sliding contact with the pad printing steel plate 2353 and has a scraper at the bottom, and an ink cartridge driving cylinder 2351 that drives the pad printing ink cartridge 2352 to reciprocate; the ink driving cylinder 2351 is a reciprocating cylinder, and the pad printing ink cartridge 2352 can be driven to reciprocate on the pad printing steel plate 2353 by the ink driving cylinder 2351. The scraper in the pad printing ink cartridge 2352 can scrape the pad printing steel plate 2353 to ensure that the ink is evenly spread on the pad printing steel plate 2353; the pad printing steel plate 2353 can be quickly replaced on the bottom plate mounting seat 2354 as needed, thereby improving the expandability of the overall pad printing work.

[0060] Furthermore, the color mold full inspection device 26 includes a detection transport mechanism 261, a detection displacement module 262 that drives the detection transport mechanism 261 to move back and forth, an optical detection mechanism 263, a detection frame 264, and a detection stand 265 disposed on the detection frame 264;

[0061] The optical detection mechanism 263 includes a backlight structure 2631, a positive light structure 2632, a detection lifting module 2634 for driving the positive light structure 2632 to lift and lower, and a visual camera 2633; the detection displacement module 262 and the backlight structure 2631 are arranged on the detection frame 264; the detection lifting module 2634 is arranged on the detection frame 265;

[0062] During the inspection, the rotary feeding mechanism 30 transports the color mold under the last light-fixing mechanism 24 to the inspection transport mechanism 261, the inspection transport mechanism 261 adjusts the static posture of the color mold to be inspected, the inspection displacement module 262 drives the inspection transport mechanism 261 to the top of the backlight structure 2631, the inspection lifting module 2634 drives the positive light structure 2632 to change the positive light illumination height, and the visual camera 2633 inspects the color mold to be inspected under different lighting environments; after the inspection, the rotary feeding mechanism 30 transports the color mold to the loading and unloading processing unit 10;

[0063] The backlight structure 2631 is a lamp panel structure to realize back-lighting, and the front light structure 2632 is an embracing lampshade structure, which can be equipped with various types of light beads as needed to simulate different lighting conditions.

[0064] In actual use, the detection and transport mechanism 261 carries the color model to be tested transferred by the front-end equipment. After the color model to be tested enters the detection and transport mechanism 261, the product is transported and adjusted to reach a predetermined posture; then the detection displacement module 262 displaces the detection and transport mechanism 261 and the color model to be tested to the optical detection mechanism 263, and the backlight structure 2631 provides backlight fill light from below the color model, and the displacement and lifting module 2634 drives the positive light structure 2632 to change the predetermined height. During this period, the visual camera 2633 obtains the image data of the color model to be tested under different lighting conditions to complete the color difference detection operation; during the detection process, the displacement and lifting module 2643 drives the detection and transport mechanism 261 to displace, and implements side-by-side single-piece detection with dual cameras. Each camera detects one piece at a time, and one detection cycle completes the color model detection of a fixture.

[0065] This contact lens product testing device has a high degree of automation and integrates the posture adjustment and visual inspection of the color model to be tested. By adjusting the incoming materials to achieve the position and posture required for the specified inspection, the subsequent operations can be completed by simply transporting the color model to the inspection and transportation mechanism. The integrated backlight structure and the highly controllable positive light structure can detect color model defects, color difference space, and pattern color difference.

[0066] In this embodiment, the detection and transport mechanism 261 includes a rotating mechanism 2611 and a pitch-changing mechanism 2612. The rotating mechanism 2611 is connected to the detection displacement module 262 by a detection displacement frame 2622. The pitch-changing mechanism 2612 is installed at the output end of the rotating mechanism 2611; one end of the detection displacement frame 2622 is connected to the output end of the detection displacement module 262, and the other end is slidably installed on the displacement auxiliary rail 2621; the detection and transport mechanism 261 is composed of a rotating mechanism 2611 and a pitch-changing mechanism 2612; one end of the detection displacement frame 2622 is connected to the output end of the detection displacement module 262, and the other end is slidably installed on the displacement auxiliary rail 2621 and driven by the detection displacement module 262, so as to drive the reciprocating movement of the rotating mechanism 2611.

[0067] In this embodiment, the pitch changing mechanism 2612 includes a pitch changing frame 2617 installed at the output end of the rotating mechanism 2611, a pitch changing cylinder 2613 installed in the pitch changing frame 2617, and a detection carrier 2616 slidably installed on the pitch changing frame 2617; the pitch changing cylinder 2613 drives the detection carrier 2616 to slide and change the pitch on the pitch changing frame 2617; the pitch changing cylinder 2613 is provided with a group of pitch changing slides 2614 that move relative to each other, and each of the pitch changing slides 2614 and the detection carrier 2616 The variable pitch connecting frame 2615 is used for connection; the variable pitch cylinder 2613 is a double-headed cylinder, and the double heads are respectively equipped with a variable pitch slide 2614, and the variable pitch slide 2614 is connected to the detection carrier 2616 through the variable pitch connecting frame 2615. The detection carrier 2616 is used to carry the color mold to be tested. The variable pitch cylinder 2613 drives the variable pitch slide 2614 and then pulls the detection carrier 2616 to adjust the position of the detection carrier 2616, ensuring that the spacing of the detection carrier 2616 is consistent with the spacing of the optical detection mechanism 263.

[0068] In this embodiment, the detection carrier 2616 is provided with a pitch-changing guide wheel 2618, and the pitch-changing connecting frame 2615 is provided with a pitch-changing guide groove 2619; when changing the pitch, the pitch-changing guide wheel 2618 slides in the pitch-changing guide groove 2619; the pitch-changing connecting frame 2618 is an inclined connecting rod, and an inclined pitch-changing guide groove 2619 is opened on the connecting rod, and the pitch-changing guide wheel 2618 of the detection carrier 2616 is arranged in the pitch-changing guide groove 2619. During the traction process, the longitudinal movement of the pitch-changing slide 2614 is changed into a lateral translation of the detection carrier 2616 by the pitch-changing guide groove 2619 and the pitch-changing guide wheel 2618; thereby realizing the opening and closing pitch change of both sides of the detection carrier 2616; to cope with products with different needs, it is only necessary to replace the detection carrier 2616 to achieve the adaptation and coverage of various product size types.

[0069] In this embodiment, the detection displacement module 262 and the detection lifting module 2634 are both linear modules; the visual camera 2633 is a visual image detector; the rotating mechanism 2611 is a rotating motor or a rotating cylinder, and the variable pitch cylinder 2613 is a double-headed cylinder.

[0070] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A rotary contact lens color mold pad printing device, characterized in that: It comprises a loading and unloading processing unit (10), a color mold pad printing full inspection unit (20), and a rotary feeding mechanism (30) for conveying the color mold to be printed between the loading and unloading processing unit (10) and the color mold pad printing full inspection unit (20); The color mold pad printing full inspection unit (20) comprises a jig rotating assembly (21) for driving the color mold to be printed, a pad printing station (23) for printing patterns on the color mold to be printed, a visual guidance assembly (25) for assisting the positioning of the pad printing station (23), a light curing mechanism (24) for curing ink, and a color mold full inspection device (26) for detecting the pad printing quality; The plurality of pad printing stations (23) are equidistantly distributed on the circumferential outer side of the fixture rotating assembly (21); a light-curing mechanism (24) is correspondingly installed on the side of each pad printing station (23); and a visual guidance assembly (25) is correspondingly installed above the pad printing station (23); and a color mold full inspection device (26) is arranged on the side of the last light-curing mechanism (24); During the pad printing operation, the rotary feeding mechanism (30) takes the color mold to be printed from the loading and unloading processing unit (10), and then transports it to the color mold pad printing full inspection unit (20) for pattern pad printing and color difference full inspection, and finally the rotary feeding mechanism (30) transports it to the loading and unloading processing unit (10) to complete the printing operation.

2. The rotary contact lens color mold pad printing device according to claim 1, characterized in that: The loading and unloading processing unit (10) comprises a loading mechanism (11) for providing the color mold to be printed, a dust removal mechanism (12) for removing dust from the color mold to be printed, a laser engraving marking mechanism (13) for marking the printed color mold, and a unloading mechanism (14) for collecting the printed color mold.

3. The rotary contact lens color mold pad printing device according to claim 2, characterized in that: The feeding mechanism (11) is connected to the dust removal mechanism (12) via a feeding transfer mechanism (16), the laser engraving marking mechanism (13) is connected to the unloading mechanism (14) via a unloading transfer mechanism (17), and the sides of the feeding mechanism (11) and the unloading mechanism (14) are both provided with a transplanting mechanism (15) for transporting the color mold.

4. The rotary contact lens color mold pad printing device according to claim 3, characterized in that: The initial end of the loading transfer mechanism (16) is docked with the rotating feeding mechanism (30), and the initial end of the unloading transfer mechanism (17) is docked with the rotating feeding mechanism (30).

5. The rotary contact lens color mold pad printing device according to claim 1, characterized in that: The color mold pad printing full inspection unit (20) further comprises a surface treatment mechanism (22); the fixture rotating assembly (21) comprises a rotating platform (211), and a plurality of positioning carriers (212) arranged at equal intervals on the rotating platform (211); the spacing between the arrangement positions of the surface treatment mechanism (22), the pad printing station (23) and the light curing mechanism (24) is the same as the spacing between the positioning carriers (212).

6. The rotary contact lens color mold pad printing device according to claim 5, characterized in that: The pad printing station (23) comprises two pad printing rubber head assemblies (232), a pad printing head fine-motion adjustment mechanism (233) for fine-tuning the pad printing rubber head assemblies (232), a pad printing robot (231) for driving the pad printing head fine-motion adjustment mechanism (233) to move, an ink scraping mechanism (235) for providing ink to the pad printing rubber head assemblies (232), and a cleaning mechanism (234); an air blowing structure is also provided on the pad printing rubber head assemblies (232); During the pad printing operation, the visual guidance component (25) guides and positions the pad printing robot (231), and the pad printing robot (231) drives the pad head fine-motion adjustment mechanism (233) and the pad printing rubber head component (232) installed at the end of the pad head fine-motion adjustment mechanism (233) to work, and the pad head fine-motion adjustment mechanism (233) fine-adjusts the action performed by the pad printing rubber head component (232); the ink scraping mechanism (235) provides ink for the pad printing action of the pad printing rubber head component (232), and the air blowing structure blows air to the pad printing rubber head component (232) and the ink scraping mechanism (235) to control the viscosity of the ink; after a single pad printing is completed, the cleaning mechanism (234) cleans the pad printing rubber head component (232), and the printed color mold enters the bottom of the light curing mechanism (24).

7. The rotary contact lens color mold pad printing device according to claim 6, characterized in that: A visual guidance component is correspondingly arranged above each pad printing station (23); the visual guidance component (25) is a dual-camera layout and is mounted on a frame (251), wherein one camera is located above the ink scraping mechanism (235) and the other camera is located above the positioning carrier (212) corresponding to the pad printing station (23).

8. The rotary contact lens color mold pad printing device according to claim 1, characterized in that: The color mold full inspection device (26) comprises an inspection transport mechanism (261), an inspection displacement module (262) driving the inspection transport mechanism (261) to move back and forth, an optical inspection mechanism (263), an inspection frame (264), and an inspection stand (265) arranged on the inspection frame (264); The optical detection mechanism (263) comprises a backlight structure (2631), a positive light structure (2632), a detection lifting module (2634) for driving the positive light structure (2632) to lift and lower, and a visual camera (2633); the detection displacement module (262) and the backlight structure (2631) are arranged on the detection frame (264); the detection lifting module (2634) is arranged on the detection frame (265); During the detection operation, the rotary feeding mechanism (30) moves the color model under the last light-curing mechanism (24) to the detection transport mechanism (261), the detection transport mechanism (261) adjusts the static posture of the color model to be tested, the detection displacement module (262) drives the detection transport mechanism (261) to the top of the backlight structure (2631), the detection lifting module (2634) drives the positive light structure (2632) to change the positive light illumination height, and the visual camera (2633) detects the color model to be tested under different illumination environments; after the detection, the rotary feeding mechanism (30) transfers the color model to the loading and unloading processing unit (10).

9. The rotary contact lens color mold pad printing device according to claim 8, characterized in that: The detection and transport mechanism (261) comprises a rotating mechanism (2611) and a pitch-changing mechanism (2612); the rotating mechanism (2611) is connected to the detection and displacement module (262) by means of a detection and displacement frame (2622); the pitch-changing mechanism (2612) is installed at the output end of the rotating mechanism (2611); one end of the detection and displacement frame (2622) is connected to the output end of the detection and displacement module (262), and the other end is slidably installed on the displacement auxiliary rail (2621); the pitch-changing mechanism (2612) comprises a pitch-changing frame (2617) installed at the output end of the rotating mechanism (2611), a pitch-changing cylinder (2613) installed in the pitch-changing frame (2617), and a detection carrier plate (2616) slidably installed on the pitch-changing frame (2617); the pitch-changing cylinder (2613) drives the detection carrier plate (2616) to slide and change the pitch on the pitch-changing frame (2617).

10. The rotary contact lens color mold pad printing device according to claim 9, characterized in that: The pitch-changing cylinder (2613) is provided with a group of pitch-changing slides (2614) that move relative to each other. Each pitch-changing slide (2614) is connected to the detection carrier (2616) by a pitch-changing connecting frame (2615). The detection carrier (2616) is provided with a pitch-changing guide wheel (2618), and the pitch-changing connecting frame (2615) is provided with a pitch-changing guide groove (2619). When the pitch is changed, the pitch-changing guide wheel (2618) slides in the pitch-changing guide groove (2619).

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