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 rotary unit for driving a mold to be printed to flow, and one side of the rotary unit is a supply area and is provided with a feeding mechanism, a receiving mechanism and a full inspection assembly; a transfer printing area is arranged on the other side of the rotary unit and is provided with a plurality of transfer printing stations for carrying out pattern printing on the to-be-printed mold and a light curing mechanism for curing printing ink; according to the utility model, rapid switching of die material operation stations is realized; a working area is subjected to centralized layout, and partition rapid switching ferrying is realized through a connection device, so that the overall working efficiency is improved; the defects that the thread is long and the occupied space is large in a traditional linear layout are overcome, and the defects that under a rotary layout, the space of the center area of a rotary disc is wasted, and mold circulation needs to be achieved through multiple kinds of transfer equipment are overcome; and the quality of printed patterns is improved, color difference flaws are detected in time, and the good product and processing efficiency of mold transfer printing work are integrally improved.

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 pad printing device. Background Art

[0002] Colored contact lenses (cosmetic lenses) have various colored patterns on their irises. During the manufacturing process, there are usually several methods for printing patterns on colored lenses, among which mold (concave mold) pad printing is a commonly used method;

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

[0004] The utility model aims to provide a contact lens mold pad printing device with high automation, rotary layout, integrated pad printing defect color difference detection and visual guidance.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] A rotary contact lens color mold pad printing device includes a rotary unit that drives the mold to be printed. One side of the rotary unit is a supply area, which is equipped with a loading mechanism, a material receiving mechanism, and a full inspection component. The other side of the rotary unit is a pad printing area, which is equipped with several pad printing stations for printing patterns on the mold to be printed and a light curing mechanism for curing the ink.

[0007] The rotary unit includes at least two rotating devices arranged in parallel, a plurality of rotating rotors mounted on the rotating devices, and a docking device mounted at the end of the rotating device for ferrying the rotating rotors; each of the rotating rotors is mounted with a mold carrier for placing the mold; and a plurality of transfer and transport mechanisms for transporting the mold are mounted above the rotating device.

[0008] During the pad printing operation, the transfer transport mechanism transfers the mold to be printed from the loading mechanism to the mold carrier, and the rotary device drives the mold carrier to flow in the supply area. When it reaches the end of the stroke, the connecting device ferryes the mold carrier to the pad printing area; multiple pad printing stations are equidistant in the pad printing area, and a light-curing mechanism is installed on the side of each pad printing station, and a visual guidance component is set above each pad printing station; after the pad printing is completed, the connecting device on the side of the last light-curing mechanism ferries the mold carrier back to the supply area, and the pattern pad printing and color difference full inspection are carried out by the full inspection component, and finally the mold carrier is transported to the receiving mechanism by the transfer transport mechanism to complete the printing operation.

[0009] Furthermore, the docking device includes a docking module and a rotary drive for driving the docking module; the rotary device and the docking module are both magnetically driven linear motors; the rotary device is arranged in parallel, and the rotary drive drives the docking module to achieve alternating ferrying with the rotary device;

[0010] Furthermore, in the supply area, according to the mold flow direction, a dust removal component and a surface treatment mechanism for removing dust from the mold to be printed are provided at the rear end of the feeding mechanism; a laser marking component for marking the mold after inspection and identification is also provided between the full inspection component and the receiving mechanism; the receiving mechanism, feeding mechanism and surface treatment mechanism all use a matching transfer and handling mechanism to realize interaction with the rotating device.

[0011] Furthermore, the transfer transport mechanism includes a transfer transport drive mounted above the rotary device using a transfer bracket, an execution end of the transfer transport drive is provided with a transfer mounting plate, the transfer mounting plate is movably suspended with a transfer suction cup using a suction cup guide rod, and a transfer downward driving device for driving the transfer suction cup is installed on the transfer mounting plate;

[0012] During transfer handling, the transfer handling drive drives the transfer installation plate to move back and forth in the working area; after the transfer installation plate reaches the handling position, the transfer lowering drive drives the transfer suction cup to lower and rise, completing the grabbing and placing of the mold, thus realizing the flow of the color film between the rotary unit and the supply area;

[0013] Furthermore, the loading mechanism includes a barrel assembly for placing the mold, a material handling assembly for picking up and placing the mold, and a height adapter assembly for adjusting the height of the mold receiving and feeding material; the barrel assembly includes a rotating barrel, a barrel drive for driving the rotating barrel to rotate, a push rod for pushing the mold inside the rotating barrel, and a push rod module for driving the push rod to rise and fall;

[0014] During the loading action, the push rod module drives the push rod to extend into the rotating barrel, pushing the mold to the transport position of the material handling component. The material handling component absorbs the mold and places it on the height adaptation component. The height adaptation component suspends the mold at a specified height and waits for subsequent actions.

[0015] Furthermore, the rotating barrel includes several barrel groups, the bottoms of which are all mounted on a rotating base plate, and the barrel drive drives the rotating base plate to rotate; a push rod through hole is opened on the rotating base plate corresponding to the bottom of the barrel group to facilitate the push rod to extend into the barrel group, and the diameter of the push rod through hole is smaller than the diameter of the mold; the height of the barrel group matches the installation height of the material handling assembly;

[0016] Furthermore, the surface treatment mechanism includes a corona positive electrode head, a corona drive for driving the corona positive electrode head to rise and fall, a corona negative electrode group installed below the corona positive electrode head, a corona support plate for carrying the mold, and a support plate drive for driving the corona support plate;

[0017] One end of the corona support plate is supported by an auxiliary rail, and the support plate is driven to connect and drive the other end of the corona support plate; the corona support plate moves back and forth between the transfer and handling mechanism and the bottom of the corona positive head;

[0018] Furthermore, the pad printing station includes two pad printing rubber head assemblies, a pad head fine-tuning mechanism for fine-tuning the pad printing rubber head assemblies, a pad printing robot for driving the pad head fine-tuning mechanism, an ink scraping mechanism for supplying ink to the pad printing rubber head assemblies, and a cleaning mechanism; the pad printing rubber head assemblies are also provided with an air blowing structure;

[0019] During pad printing, the visual guidance component guides and positions the pad printing robot, which drives the pad head fine-motion adjustment mechanism and the pad printing head assembly installed at the end of the pad head fine-motion adjustment mechanism to work. The pad head fine-motion adjustment mechanism further fine-tunes the horizontal and height of the pad printing action of the pad printing head assembly. The scraper mechanism provides ink for the pad printing action of the pad printing head assembly, and the air blowing mechanism blows air to the pad printing head assembly and the scraper mechanism to control the ink viscosity. After a single pad printing operation is completed, the cleaning mechanism cleans the pad printing head assembly, and the printed mold enters the bottom of the light curing mechanism.

[0020] Furthermore, the visual guidance assembly includes a first camera for pad printing positioning and a second camera located above the ink scraping mechanism; the first camera and the second camera are both hoisted using a visual frame;

[0021] Furthermore, the full inspection assembly includes a full inspection base mounted on the side of the rotary unit and a full inspection camera mounted on the full inspection base using a full inspection bracket. The full inspection base is also provided with a full inspection drive, and the execution end of the full inspection drive is connected to a fill light cover; the full inspection bracket is provided with a camera cover;

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] During the specific pad printing operation, the loading mechanism supplies the mold to be printed. After the mold reaches the predetermined position, the transfer and transporting mechanism on the side of the loading mechanism transfers the mold to the mold carrier, and the rotary device drives the mold carrier to run to the end of the supply area. The connecting device drives the mold carrier to switch the corresponding rotary device, and then the mold carrier switches between the supply area and the pad printing area; the mold carrier prints the pattern multiple times in the pad printing area, and each printing is performed by the corresponding visual guidance component corresponding to the auxiliary pad printing station to print the image and text. After a single printing is completed, the pattern is cured by the light curing mechanism to ensure the quality of the printing; after the last printing and curing are completed, the connecting device drives the mold carrier to the supply area again; the rotary device drives the mold carrier to run to the full inspection component for pattern quality and color difference inspection, and then the transfer and transporting mechanism on the side of the receiving mechanism transports the mold from the mold carrier to the receiving mechanism, completing a complete pattern printing operation; the rotary device is equipped with and drives several rotary rotors to realize the continuous operation of multiple groups of mold carriers;

[0024] The utility model realizes the rapid switching of the working stations of the mold materials through the rotary flow conveying mode; the supply area and the pad printing area are divided to centrally arrange the working area, and the rapid switching and ferrying of the partitions is realized through the docking device, thereby improving the overall work efficiency; this layout not only improves the shortcomings of the traditional linear layout such as long thread length and large space occupation, but also avoids the defect of wasting space in the center area of ​​the turntable in the rotary layout and the need for multiple transfer equipment to realize the mold flow; in the pattern printing operation, the visual guidance component and the full inspection component are used to improve the quality of the printed pattern, timely detect color and color difference defects, and overall improve the quality and processing efficiency of the mold pad printing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a top view of the overall structure of the utility model;

[0027] Figure 3 This is a schematic structural diagram of the rotary unit of the present utility model;

[0028] Figure 4 This is a partial enlarged schematic diagram of point A of the present utility model;

[0029] Figure 5 This is a schematic structural diagram of the rotary rotor of the present invention;

[0030] Figure 6 This is a structural diagram of the transfer and transport mechanism of the present utility model;

[0031] Figure 7 It is the overall structure of the feeding mechanism of the utility model;

[0032] Figure 8 It is a side view of the feeding mechanism of the present utility model;

[0033] Figure 9 This is a schematic oblique rear view of the feeding mechanism of the present invention;

[0034] Figure 10 It is a structural diagram of the surface treatment mechanism of the utility model;

[0035] Figure 11 This is a schematic structural diagram of the pad printing station of the present invention;

[0036] Figure 12 This is a structural diagram of the micro-adjustment mechanism of the rubber head of the present invention;

[0037] Figure 13 This is a cross-sectional view of the structure of the pad printing rubber head assembly of the present invention;

[0038] Figure 14 It is a structural diagram of the full inspection component of the utility model. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments.

[0040] refer to Figure 1-14 As shown, a rotary contact lens color mold pad printing device includes a rotary unit 30 that drives the mold to be printed. One side of the rotary unit 30 is a supply area 301, which is equipped with a loading mechanism 10, a receiving mechanism 90, and a full inspection component 70. The other side of the rotary unit 30 is a pad printing area 302, which is equipped with several pad printing stations 40 for printing patterns on the mold to be printed and a light curing mechanism 50 for curing the ink.

[0041] The rotary unit 30 includes at least two parallel rotating devices 31, a plurality of rotating rotors 32 mounted on the rotating devices 31, and a docking device mounted at the end of the rotating devices 31 for ferrying the rotating rotors 32. Each rotating rotor 32 is mounted with a mold carrier 33 for placing the mold. A plurality of transfer and transport mechanisms 60 for transporting the mold are mounted above the rotating devices 31.

[0042] During the pad printing operation, the transfer transport mechanism 60 transfers the mold to be printed from the loading mechanism 10 to the mold carrier 33, and the mold carrier 33 is driven by the rotating device 31 to circulate in the supply area 301. When it reaches the end of the stroke, the connecting device ferryes the mold carrier 33 to the pad printing area 302; multiple pad printing stations 40 are equidistantly spaced in the pad printing area 302, and a light curing mechanism 50 is correspondingly installed on the side of each pad printing station 23, and a visual guide component is correspondingly set above each pad printing station 40; after the pad printing is completed, the connecting device on the side of the last light curing mechanism 50 ferries the mold carrier 33 back to the supply area 301, and the pattern pad printing and color difference full inspection are carried out by the full inspection component 70, and finally the transfer transport mechanism 60 transports it to the receiving mechanism 90 to complete the printing operation.

[0043] The light curing mechanism 50 is a UV curing device, which is used to cure the printed pattern of the front pad printing station 40 to improve the printing quality of the pattern;

[0044] In actual use, the rotary unit 30 is used to circulate and drive the molds, responsible for transferring the molds to be printed to various processing stations to complete the mold transfer work. The rotary unit 30 divides the working area into two sides. One side is the supply area 301, where the loading mechanism 10 is used to provide materials, the full inspection component 70 is used to check the printing quality and color difference of the pattern, and the material collection mechanism 90 is used to store the printed molds. The other side is the printing area, which is used to perform multiple pattern printing operations as needed. Each printing operation is completed by a group of pad printing stations 40 and light curing mechanism 50.

[0045] The rotary device 31 can drive the rotary rotor 32 to move a predetermined distance, thereby driving the mold carrier 33 to move in a controlled manner. The transfer mechanism 60 is mounted above the rotary device 31 and is correspondingly arranged on the sides of the loading mechanism 10 and the receiving mechanism 90 to assist in the transfer of molds and ensure the transfer of molds between the mold carrier 33 and the loading mechanism 10 and the receiving mechanism 90 in the supply area 301.

[0046] During the specific pad printing operation, the loading mechanism 10 supplies the mold to be printed. After the mold reaches the predetermined position, the transfer and transport mechanism 60 on the side of the loading mechanism 10 transfers the mold to the mold carrier 33. The rotary device 31 drives the mold carrier 33 to run to the end of the supply area 301. The connecting device drives the mold carrier 33 to switch the corresponding rotary device 31, and then the mold carrier 33 switches between the supply area 301 and the pad printing area 302; the mold carrier 33 performs multiple pattern printing in the pad printing area 302, and each printing is performed by the corresponding visual guidance component 401 corresponding to the auxiliary pad printing station 40 for image and text. Printing: After a single print run is completed, the pattern is cured by the light-curing mechanism 50 to ensure print quality. After the last print run and curing are complete, the docking device drives the mold carrier 33 to be transferred to the supply area 301 again. The rotary device 31 drives the mold carrier 33 to the full inspection component 70 for pattern quality and color difference inspection. After that, the transfer mechanism 60 on the side of the receiving mechanism 90 transfers the mold from the mold carrier 33 to the receiving mechanism 90, completing a complete pattern printing operation. The rotary device 31 is equipped with and drives a plurality of rotary rotors 32, thereby realizing continuous operation of multiple groups of mold carriers 33.

[0047] The rotary contact lens color mold pad printing equipment realizes the rapid switching of the working stations of the mold materials through the rotary flow conveying mode; the supply area 301 and the pad printing area 302 are divided to centrally arrange the working area, and the fast switching and ferrying of the partitions is realized through the docking device, thereby improving the overall work efficiency; this layout not only improves the shortcomings of the traditional linear layout of long thread length and large space occupation, but also avoids the defects of the rotary layout, such as the waste of space in the center area of ​​the turntable and the need for multiple transfer equipment to realize the mold flow; in the pattern printing operation, the visual guidance component (401) and the full inspection component are used to improve the quality of the printed pattern, timely detect color and color difference defects, and overall improve the quality and processing efficiency of the mold pad printing work.

[0048] In this embodiment, the docking device includes a docking module 35 and a rotary drive 34 that drives the docking module 35. The rotary device 31 and the docking module 35 are both magnetically driven linear motors. The rotary device 31 is arranged in parallel, and the rotary drive 34 drives the docking module 35 to achieve alternating movement with the rotary device 31.

[0049] During the rotation process, each of the rotating devices 31 is driven in one direction, driving the rotating rotor 32 to move to the docking module 35, and then the turnover drive 34 drives the docking module 35 to move to another rotating device 31 moving in the opposite direction, thereby realizing the turnover of the film carrier 33; the rotating device 31 is the main turnover track, and a plurality of rotating rotors 32 are slidably assembled on the rotating device 31, and the rotating rotors 32 are driven, and then the turnover drive 34 controls the movement of the docking module 32, so that the rotating rotor 32 running to the end is connected and shuttled, and rotated to another rotating device 31, thereby realizing the rapid and stable turnover rotation of the film carrier 33;

[0050] In this embodiment, the rotating device 31 and the docking module 35 are both magnetically driven linear motors; the rotating device 31 is arranged in parallel, and the turnover drive 34 drives the docking module 35 to achieve alternating ferrying with the rotating device 31; the magnetically driven linear motor has a small overall size, runs smoothly, and can freely select a stroke to display the drive of the rotating stator 32, thereby realizing the hovering of the membrane carrier 33 installed on the rotating stator 32 at a predetermined position; the rotating device 31 is arranged in parallel, and the installation direction of the turnover drive 34 is perpendicular to the rotating device 31, ensuring that the turnover drive 34 drives the docking module 35 to smoothly dock and ferry with the rotating device.

[0051] In this embodiment, the rotating device 31 and the connecting module 35 only differ in the driving stroke, and the other parameters are matched with each other; in this embodiment, the top of the rotating device 31 and the connecting module 35 are both installed with auxiliary upper rails 311, and the side end faces are both provided with auxiliary side rails 312; the rotating rotor 32 adopts the auxiliary upper rails 311 and the auxiliary side rails 312 to achieve sliding assembly; the rotating device 31 and the connecting module 35 are both provided with auxiliary upper rails 311 and auxiliary side rails 312 to achieve smooth operation of the rotating rotor 32.

[0052] In this embodiment, the rotary rotor 32 is an L-shaped plate; the auxiliary upper rail 311 and the auxiliary side rail 312 are both installed on the inner wall of the L-shaped plate, and the top of the L-shaped plate is connected to the film-bearing carrier 33; the rotary rotor 32 is also installed with an anti-roll plate 323; on the basis of the double sliding rails of the auxiliary upper rail 311 and the auxiliary side rail 312 to ensure stable operation, the addition of the anti-roll plate 323 can further avoid accidental tilting of the rotary rotor 32 during operation, thereby ensuring the safety of the conveying operation of the film-bearing carrier 33.

[0053] In this embodiment, the film carrier 33 includes a carrier plate 331 mounted on the rotary rotor 32, and an optical film clamp 334 for positioning the optical film; an opening and closing paddle 333 is provided at the bottom of the optical film clamp 334; the carrier plate 331 is provided with a clamp avoidance hole 332; the optical film clamp 334 is used to place the optical film that requires color film pad printing, and the optical film clamp 334 is a movable clamp. By operating the opening and closing paddle 333, it can be unlocked and locked to prevent the optical film from shifting or falling off during transportation; the clamp avoidance hole 332 provided on the carrier plate 331 can reduce weight and also achieve avoidance of the opening and closing paddle 333;

[0054] In this embodiment, it also includes an unlocking component 36 and a fill light component 37 arranged on the inner side of the rotating device 31; in this embodiment, the unlocking component 36 is a thin pneumatic finger; the unlocking component 36 is set as needed to lock and unlock the film carrier 33, which is convenient for loading and unloading of optical films; the fill light component 37 assists in light compensation for pad printing and detection related actions.

[0055] In this embodiment, in the supply area 301, according to the mold flow direction, the rear end of the feeding mechanism 10 is further provided with a dust removal component 21 and a surface treatment mechanism 22 for removing dust from the mold to be printed; a laser marking component 80 for marking the mold after detection and identification is also provided between the full inspection component 70 and the receiving mechanism 90; the receiving mechanism 90, the feeding mechanism 10 and the surface treatment mechanism 22 all adopt a matching transfer and conveying mechanism 60 to realize interaction with the rotary device 31; in the supply area 301, the dust removal component 21 can absorb dust from the mold to be printed to prevent dust or other foreign particles from affecting the pattern printing effect. The surface treatment mechanism 22 is a corona component, which can promote the surface oxidation of the mold to be printed, moderately increase the roughness, and contribute to the display effect of the pattern printing. The laser marking component 80 can laser mark the mold after the full inspection, which is helpful for subsequent further sorting work.

[0056] In this embodiment, the transfer transport mechanism 60 includes a transfer transport drive 61 mounted above the rotating device 31 using a transfer bracket 66, and the execution end of the transfer transport drive 61 is provided with a transfer mounting plate 63, and the transfer mounting plate 63 is movably suspended with a transfer suction cup 65 using a suction cup guide rod 641, and a transfer downward drive 62 for driving the transfer suction cup 65 is installed on the transfer mounting plate 63; during transfer transport, the transfer transport drive 61 drives the transfer mounting plate 63 to travel back and forth in the working area; after the transfer mounting plate 63 reaches the transport position, the transfer downward drive 62 drives the transfer suction cup 65 to move downward and upward to complete the grabbing and placement of the mold, thereby realizing the flow of the color film between the rotating unit 30 and the supply area 301.

[0057] Specifically, a transfer and transport mechanism 60 is provided on the side of the loading mechanism 10, the receiving mechanism 90, and the surface treatment mechanism 22. The transfer and transport drive 61 is a linear motor, which is mounted above the rotating device 31 through a transfer bracket 66. One end of the transfer mounting plate 63 is slidably mounted on the transfer bracket 66 using an auxiliary rail, and the other end is driven by the transfer and transport drive 61; under the drive of the transfer and transport drive 61, the transfer mounting plate 63 carries the transfer suction cup 65 to and from the top of the rotating device 31 and the work station of the supply area 301, completing the transportation and transfer of the mold, and improving the material transfer speed between the processing station and the rotary unit 30.

[0058] In this embodiment, the loading mechanism 10 includes a barrel assembly 11 for placing the mold, a material handling assembly 13 for picking up and placing the mold, and a height adapter assembly 12 for adjusting the height of the mold receiving and feeding material; the barrel assembly 11 includes a rotating barrel 112, a barrel drive 111 for driving the rotating barrel 112 to rotate, a pusher rod 114 for pushing the mold inside the rotating barrel 112, and a pusher module 113 for driving the pusher rod 114 to rise and fall;

[0059] During the loading action, the push rod module 113 drives the push rod 114 to extend into the rotating barrel 112, pushing the mold to the transport position of the material handling component (13), and the material handling component 13 absorbs the mold and places it on the height adaptation component 12, and the height adaptation component 12 suspends the mold at a specified height, waiting for subsequent actions; during the unloading action, the external component places the mold on the height adaptation component 12, and the height adaptation component 12 lifts the mold to the working position of the material handling component 13, and the material handling component 13 absorbs the mold and places it in the rotating barrel 112, and the push rod module 113 drives the push rod 114 to support the mold and gradually descend;

[0060] In this embodiment, the feeding mechanism 10 and the receiving mechanism 90 have the same structural features and only differ in function. The two adopt the same technical features.

[0061] In actual use, it can be freely selected for loading or unloading according to the layout requirements; in the loading action, the rotating barrel 112 is used as the feeding part to temporarily store the mold, and the push rod module 113 is a linear motor, which is used to drive the push rod 114 to extend into the rotating barrel 112, and can push the mold in the rotating barrel 112 to rise, so that the uppermost mold is always located at the starting transport position of the material handling component 13; the transporting component 13 sucks the mold from the rotating barrel 112 and transports it to the height adaptation component 12, and the height adaptation component 12 moves the mold to a height that matches the external assembly line or other turnover components; improve the overall loading efficiency and ensure that the loading stage can adapt to various types of equipment layouts; in the unloading action, the overall process is that the mold is received into the rotating barrel 112, and the mold is transported to the height adaptation component 12. In the rotating barrel 112, after the external assembly line or other turnover components place the mold on the height adaptation component 12, the height adaptation component 12 moves the mold to the working position height of the conveying component 13, and the conveying component 13 conveys the mold into the rotating barrel 112. During the mold collection process, the push rod module 113 drives the push rod 114 to gradually descend, reserving placement space for each mold to be collected; the overall structure is streamlined, and functional differentiation can be performed as needed to meet the requirements of loading and unloading actions; the cylinder-type temporary storage of materials makes rational use of the longitudinal space, reduces the area occupied by the equipment, improves the overall loading and unloading efficiency, and is equipped with a height adjustment structure to meet and adapt to various types of material conveying structures, thereby improving the overall adaptability of the loading and unloading mechanism.

[0062] In this embodiment, the rotating barrel 112 includes several barrel groups 1121, and the bottoms of the barrel groups 1121 are all installed on the rotating base plate 1122, and the barrel drive 111 drives the rotating base plate 1122 to rotate; the present application adopts a double barrel group 1121 design, which is centrally symmetrically installed on the rotating base plate 1122; when the mold in one barrel group 1121 is completed or the storage warehouse is full, the barrel drive 111 is used to rotate the rotating base plate 1122, and the other group of rotating barrels 1121 is rotated again to the working position of the conveying structure 13, so as to realize one backup and one use of the barrel group 1121; the barrel group 1121 can be adjusted in multiple groups according to the actual working conditions, thereby improving the production capacity release of one-time loading and unloading and the adjustment of product storage capacity.

[0063] In this embodiment, a push rod through hole 1123 is provided on the rotating base plate 1122 at the bottom of the corresponding barrel group 1121 to facilitate the push rod 114 to extend into the barrel group 1121. The diameter of the push rod through hole 1123 is smaller than the diameter of the mold; the height of the barrel group 1121 matches the installation height of the material handling assembly 13; the push rod 114 enters the barrel group 1121 through the push rod through hole 1123, and the mold can be smoothly stored or taken out in the barrel group 1121 that matches its size. The diameter of the push rod through hole 1123 is smaller than the mold to prevent the mold from falling out of the barrel group 1121; the push rod 114 is driven by the push rod module 113 to push the mold up and down to meet the different height changes of the mold material during the loading and unloading process.

[0064] In this embodiment, the material handling assembly 13 includes a material handling suction cup 135, a material handling frame plate 132 for assembling the material handling suction cup 135, and a material handling drive 131 for driving the material handling frame plate 132; the material handling suction cup 135 is connected to the material handling frame plate 132 by a material handling guide rod 134; in this embodiment, a suction cup push cylinder 133 is also installed on the material handling frame plate 132 for pushing the material handling suction cup 135 downward, and the telescopic end of the suction cup push cylinder 133 passes through the material handling frame plate 132 and is connected to the material handling suction cup 135, and the material handling suction cup 135 is connected to an external air source; the material handling suction cup 135 is a multi-head suction cup, which is connected to an external air source to adsorb the mold, and the suction cup push cylinder 133 is used to control the downward exploration height of the material handling suction cup 135, and the material handling guide rod 134 ensures that the material handling suction cup 135 can slide smoothly with the material handling frame plate 132 to ensure that the material handling suction cup 135 can completely adsorb the mold.

[0065] In this embodiment, the material handling drive 131 is supported and installed by a material handling frame 136, and the height adaptation component 12 is installed on the material handling frame 136; in this embodiment, the height adaptation component 12 includes a height-adjusting film frame 121 for temporarily storing the mold and a height adaptation drive 122 for driving the height-adjusting film frame 121 to rise and fall; the height-adjusting film frame 121 is installed at the moving end of the height adaptation drive 122, and the placement hole position opened on the height-adjusting film frame 121 corresponds to the material handling suction cup 135; the height adaptation drive 122 is a linear motor module, which is installed on the material handling frame 126 and is used to drive the height-adjusting film frame 121 to rise and fall; the height-adjusting film frame 121 is movably installed at the moving end of the height adaptation drive 122, and can be quickly replaced according to the material handling suction cup 135 or the rear-end conveying equipment as needed; ensuring that the mold can be quickly turned over between the handling component 13 and the conveying equipment; and adapting more equipment layout types and conveying equipment of various heights and sizes through the height adaptation component 12.

[0066] In this embodiment, the dust removal component 21 is a pneumatic dust blowing device, which is connected to an external air source and blows air to the mold on the mold carrier 33 to blow away the attached dust or other particulate impurities.

[0067] In this embodiment, the surface treatment mechanism 22 includes a corona positive head 225, a corona drive 223 that drives the corona positive head 225 to rise and fall, a corona negative electrode group 227 installed below the corona positive head 225, a corona support plate 222 that carries the mold, and a support plate drive 221 that drives the corona support plate 222; one end of the corona support plate 222 is supported by an auxiliary rail, and the support plate drive 221 is connected to and drives the other end of the corona support plate 222; the corona support plate 222 travels back and forth between the transfer and handling mechanism 60 and the bottom of the corona positive head 225;

[0068] The surface treatment mechanism 22 is a corona assembly. When performing the treatment operation, the rotary unit 30 transfers the mold to the bottom of the transfer and transport mechanism 60 on the side of the surface treatment mechanism 22, and the transfer and transport mechanism 60 transfers the mold to the corona pallet 222. The pallet drive 221 drives the corona pallet 222 to move to the treatment station; the corona negative electrode group 227 is pushed up by the negative electrode cylinder 226, and the corona positive electrode head 225 is pushed down by the corona drive 223. After the positive and negative electrodes are in contact with the mold, corona treatment is performed to increase the surface roughness of the mold, so as to improve the quality of subsequent mold pattern printing work.

[0069] In this embodiment, the pad printing station 40 includes two pad printing head assemblies 42, a pad head fine-tuning mechanism 43 for fine-tuning the pad printing head assemblies 42, a pad printing robot 41 for driving the pad head fine-tuning mechanism 43, an ink scraping mechanism 45 for supplying ink to the pad printing head assemblies 42, and a cleaning mechanism 44; the pad printing head assemblies 42 are also provided with an air blowing structure;

[0070] During the pad printing operation, the visual guidance component (401) guides and positions the pad printing manipulator 41, and the pad printing manipulator 41 drives the pad head fine-motion adjustment mechanism 43 and the pad printing head assembly 42 installed at the end of the pad head fine-motion adjustment mechanism 43 to work, and the pad head fine-motion adjustment mechanism 43 further fine-tunes the level and height of the pad printing action of the pad printing head assembly 42; the scraping mechanism 45 provides ink for the pad printing action of the pad printing head assembly 42, and the air blowing structure blows air to the pad printing head assembly 42 and the scraping mechanism 45 to control the viscosity of the ink; after a single pad printing is completed, the cleaning mechanism 44 cleans the pad printing head assembly 42, and the printed mold enters the bottom of the light curing mechanism 50;

[0071] In actual application, the pad printing robot 41 drives the pad printing rubber head assembly 42 to perform the main action. During the pad printing process, the ink scraping mechanism 45 prepares the ink for the pad printing operation, and the pad printing rubber head assembly 42 is driven by the pad printing robot 41 to the top of the ink scraping mechanism 45 for ink dipping; during the dipping process, the air blowing structure can blow air to the ink scraping mechanism 45 and the pad printing rubber head assembly 42, and the blowing can volatilize the water in the ink, thereby realizing the adjustment and control of the ink viscosity; after dipping the ink, the pad printing of the mold to be printed is carried out; the visual guidance component (401) 25 is used to capture the image of the execution end of the pad printing robot 41 to obtain 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 43. The pad head fine-motion adjustment mechanism 43, in conjunction with the pad printing robot 41, further fine-tunes the position and height of the two pad printing pad head assemblies 42. After a single pad printing is completed, the cleaning mechanism 44 cleans the pad printing pad head assembly 42; and then the next pad printing cycle of the mold to be printed is carried out;

[0072] The visual guidance component (401) obtains position information in real time, performs visual guidance, and accurately controls the double-station pad printing rubber head component 42 and fine-tunes the printing color position; in order to adapt to the pad printing of eyeglass molds with different printing requirements, the added air blowing structure realizes the control of ink viscosity during the ink dipping process, improves the pattern writing quality and color quality, and the overall structure is sophisticated and versatile, thereby improving the overall contact lens pad printing quality and efficiency.

[0073] In this embodiment, the visual guidance component (401) includes a first camera 46 for pad printing positioning and a second camera 47 located above the ink scraping mechanism 45; the first camera 46 and the second camera 47 are both hoisted by a visual frame 48; a visual guidance component (401) is correspondingly arranged above each pad printing station 40; the dual-camera layout can more accurately obtain the position information of the execution end of the pad printing robot 41, ensuring the accuracy of the movement of the pad printing robot 41 during the ink dipping process and the printing process; and through the auxiliary positioning and guidance of the guiding camera 46, the difficulty of adjusting and debugging the double-station pad printing rubber head assembly 42 at the execution end of the pad printing robot 41 is further reduced.

[0074] In this embodiment, each of the pad printing rubber head components 42 includes a pad head sensor 424 mounted on the pad head fine adjustment mechanism 43, a pad head fixing seat 425 disposed at the end of the pad head sensor 424, and a pad printing rubber head 421 mounted at the end of the pad head fixing seat 425;

[0075] In this embodiment, the air blowing structure includes an air blowing ring 422 disposed on a pad holder 425 and located on the upper edge of the pad printing pad 421; a plurality of air blowing holes 423 are formed on the lower end surface of the air blowing ring 422; the upper ends of the plurality of air blowing holes 423 are connected to an external air source through an air blowing valve 426;

[0076] The pad sensor 424 is a tensile pressure sensor that 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 422 is connected to the external air source through the air blowing valve 426, 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 423 to control the water volatilization of the ink on the scraping mechanism 45 and the pad printing pad 421, and appropriately adjust the ink viscosity, thereby improving the quality of pad printing.

[0077] In this embodiment, the pad printing robot 41 is connected to the pad printing frame 411 with the pad head fine-motion adjustment mechanism 43, and the pad head fine-motion adjustment mechanism 43 includes a height fine-adjustment slide 431 vertically mounted on the pad printing frame 411, a first translation slide 432 horizontally mounted on the pad printing frame 411, and a second translation slide 433 mounted on the execution end of the first translation slide 432; the execution ends of the second translation slide 433 and the height fine-adjustment slide 431 are each installed with a pad printing pad assembly 42; the pad head fine-motion adjustment mechanism 43 cooperates with the pad printing robot 41 to realize the pad printing pad assembly 4 2 double-station control; the specific pad printing robot 41 can adjust and control the overall position of the two pad printing rubber head assemblies 42 and the downward pressure stroke during the pad printing operation; and adjust the relative position between the two pad printing rubber head assemblies 42 through the second translation slide 433 at the execution end of the first translation slide 432, and adjust the relative height between the two pad printing rubber head assemblies 42 through the height fine-tuning slide 431; thereby achieving adaptation to the printing effects of various patterns; for the needs of double-station operation, it is only necessary to control the height position of one horizontal position pad printing rubber head assembly 42 and the other.

[0078] In this embodiment, the height fine-tuning slide 431 , the first translation slide 432 and the second translation slide 433 are all electric slides; and the pad printing robot 41 is a high-precision Scara robot.

[0079] In this embodiment, the ink scraping mechanism includes a pad printing steel plate 453, a base plate mounting seat 453 for mounting the pad printing steel plate 453, a pad printing ink cartridge 452 in sliding contact with the pad printing steel plate 453 and provided with a scraper at the bottom, and an ink cartridge driving cylinder 451 for driving the pad printing ink cartridge 452 to move back and forth; the ink driving cylinder 451 is a reciprocating cylinder, which can drive the pad printing ink cartridge 452 to move back and forth on the pad printing steel plate 453 through the ink driving cylinder 451. The scraper in the pad printing ink cartridge 452 can scrape the pad printing steel plate 453 to ensure that the ink is evenly spread on the pad printing steel plate 453; the pad printing steel plate 453 can be quickly replaced on demand on the base plate mounting seat 454, thereby improving the scalability of the overall pad printing work.

[0080] In this embodiment, the full inspection assembly 70 includes a full inspection base 76 mounted on the side of the rotary unit 30 and a full inspection camera 71 mounted on the full inspection base 76 using a full inspection bracket 711. The full inspection base 76 is also provided with a full inspection driver 73, and the execution end of the full inspection driver 73 is connected to a fill light cover 72; the full inspection bracket 711 is provided with a camera cover 75;

[0081] The full inspection component 70 performs color pattern quality and color difference inspection on the mold that has been pad-printed and transferred from the rotary unit 30; a full inspection camera 71 is used to acquire the pattern and color. During this process, the full inspection drive 73 pushes down the fill light lampshade 72 to better fill light the mold to be inspected, and a camera shield 75 is added to the outside to prevent other external light from interfering with the image acquisition of the full inspection camera 71.

[0082] 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 with similar methods, without departing from the scope defined by the spirit of the present invention.

Claims

1. A rotary contact lens color mold printing device, characterized in that: The invention comprises a rotary unit (30) for driving the mold to be printed to rotate, wherein one side of the rotary unit (30) is a supply area (301) provided with a feeding mechanism (10), a receiving mechanism (90) and a full inspection component (70); the other side of the rotary unit (30) is a pad printing area (302) provided with a plurality of pad printing stations (40) for printing patterns on the mold to be printed and a light curing mechanism (50) for curing ink; The rotary unit (30) comprises at least two rotating devices (31) arranged in parallel, a plurality of rotating rotors (32) mounted on the rotating devices (31), and a connecting device mounted at the end of the rotating device (31) for ferrying the rotating rotors (32); a mold carrier (33) for placing a mold is mounted on each of the rotating rotors (32); a plurality of transfer and transport mechanisms (60) for transporting the mold are mounted above the rotating device (31); During the pad printing operation, the transfer mechanism (60) transfers the mold to be printed from the loading mechanism (10) to the mold carrier (33), and the rotary device (31) drives the mold carrier (33) to circulate in the supply area (301). When it reaches the end of the stroke, the connecting device transfers the mold carrier (33) to the pad printing area (302); a plurality of pad printing stations (40) are equidistantly spaced in the pad printing area (302), and a light curing mechanism (50) is correspondingly installed on the side of each pad printing station (40), and a visual guide component (401) is correspondingly set above each pad printing station (40); after the pad printing is completed, the connecting device on the side of the last light curing mechanism (50) transfers the mold carrier (33) back to the supply area (301), and the pattern pad printing and color difference full inspection are carried out by the full inspection component (70), and finally the transfer mechanism (60) transfers it to the receiving mechanism (90) to complete the printing operation.

2. The rotary contact lens color mold pad printing device according to claim 1, characterized in that: The docking device comprises a docking module (35) and a rotary drive (34) for driving the docking module (35) to move; the rotary device (31) and the docking module (35) are both magnetically driven linear motors; the rotary device (31) is arranged in parallel, and the rotary drive (34) drives the docking module (35) to achieve alternating ferrying with the rotary device (31).

3. The rotary contact lens color mold pad printing device according to claim 1, characterized in that: In the supply area, according to the mold flow direction, a dust removal component (21) and a surface treatment mechanism (22) for removing dust from the mold to be printed are further provided at the rear end of the feeding mechanism (10); a laser marking component (80) for marking the mold after detection and identification is also provided between the full inspection component (70) and the receiving mechanism (90); the receiving mechanism (90), the feeding mechanism (10) and the surface treatment mechanism (22) all use a matching transfer and handling mechanism (60) to achieve interaction with the rotary device (31).

4. The rotary contact lens color mold pad printing device according to claim 2, characterized in that: The transfer transport mechanism (60) includes a transfer transport drive (61) mounted on the top of the rotary device (31) by using a transfer bracket (66); a transfer mounting plate (63) is provided at the execution end of the transfer transport drive (61); a transfer suction cup (65) is movably mounted on the transfer mounting plate (63) by using a suction cup guide rod (641); and a transfer downward driving (62) for driving the transfer suction cup (65) is installed on the transfer mounting plate (63); During transfer transportation, the transfer transportation drive (61) drives the transfer installation plate (63) to move back and forth in the working area; after the transfer installation plate (63) reaches the transportation position, the transfer downward driving (62) drives the transfer suction cup (65) to move downward and upward to complete the grabbing and placing of the mold, thereby realizing the flow of the color film between the rotary unit (30) and the supply area.

5. The rotary contact lens color mold pad printing device according to claim 2, characterized in that: The loading mechanism (10) comprises a barrel assembly (11) for placing the mold, a material handling assembly (13) for picking up and placing the mold, and a height adaption assembly (12) for adjusting the height of the mold receiving and feeding material; the barrel assembly (11) comprises a rotating barrel (112), a barrel drive (111) for driving the rotating barrel (112) to rotate, a push rod (114) for pushing the mold inside the rotating barrel (112), and a push rod module (113) for driving the push rod (114) to move up and down; During the loading action, the push rod module (113) drives the push rod (114) to extend into the rotating barrel (112), pushing the mold to the transport position of the material handling component (13), and the material handling component (13) adsorbs the mold and places it on the height adaptation component (12). The height adaptation component (12) suspends the mold at a specified height and waits for subsequent actions.

6. The rotary contact lens color mold pad printing device according to claim 5, characterized in that: The rotating barrel (112) includes a plurality of barrel groups (1121), the bottoms of the barrel groups (1121) are all mounted on a rotating base plate (1122), and the barrel drive (111) drives the rotating base plate (1122) to rotate; a push rod through hole (1123) is provided on the rotating base plate (1122) corresponding to the bottom of the barrel group (1121) to facilitate the push rod (114) to extend into the barrel group (1121), and the diameter of the push rod through hole (1123) is smaller than the diameter of the mold; the height of the barrel group (1121) matches the installation height of the material handling assembly (13).

7. The rotary contact lens color mold pad printing device according to claim 3, characterized in that: The surface treatment mechanism (22) includes a corona positive electrode head (225), a corona drive (223) for driving the corona positive electrode head (225) to rise and fall, a corona negative electrode group (227) installed below the corona positive electrode head (225), a corona support plate (222) for carrying a mold, and a support plate drive (221) for driving the corona support plate (222); One end of the corona support plate (222) is supported by an auxiliary rail, and a support plate driver (221) is connected to and drives the other end of the corona support plate (222); the corona support plate (222) travels back and forth between the transfer and transport mechanism (60) and the bottom of the corona positive electrode head (225).

8. The rotary contact lens color mold pad printing device according to claim 5, characterized in that: The pad printing station (40) comprises two pad printing rubber head assemblies (42), a pad printing head fine-motion adjustment mechanism (43) for fine-tuning the pad printing rubber head assemblies (42), a pad printing robot (41) for driving the pad printing head fine-motion adjustment mechanism (43) to move, an ink scraping mechanism (45) for providing ink to the pad printing rubber head assemblies (42), and a cleaning mechanism (44); an air blowing structure is also provided on the pad printing rubber head assembly (42); During the pad printing operation, the visual guidance component (401) guides and positions the pad printing robot (41), and the pad printing robot (41) drives the pad head fine-motion adjustment mechanism (43) and the pad printing rubber head component (42) installed at the end of the pad head fine-motion adjustment mechanism (43) to work, and the pad head fine-motion adjustment mechanism (43) further fine-tunes the horizontal and height of the pad printing action of the pad printing rubber head component (42); the scraping mechanism (45) provides ink for the pad printing action of the pad printing rubber head component (42), and the air blowing structure blows air to the pad printing rubber head component (42) and the scraping mechanism (45) to control the viscosity of the ink; after a single pad printing is completed, the cleaning mechanism (44) cleans the pad printing rubber head component (42), and the printed mold enters the bottom of the light curing mechanism (50).

9. The rotary contact lens color mold pad printing device according to claim 8, characterized in that: The visual guide assembly (401) comprises a first camera (46) for pad printing positioning and a second camera (47) located above the ink scraping mechanism (45); the first camera (46) and the second camera (47) are both hoisted using a visual frame (48).

10. The rotary contact lens color mold pad printing device according to claim 1, characterized in that: The full inspection assembly (70) comprises a full inspection base (76) mounted on the side of the rotary unit (30) and a full inspection camera (71) mounted on the full inspection base (76) by using a full inspection bracket (711); the full inspection base (76) is further provided with a full inspection drive (73); the execution end of the full inspection drive (73) is connected to a fill light cover (72); and the full inspection bracket (711) is provided with a camera shield (75).

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