Dry contact lens color printing method and system

Abstract

The invention relates to the technical field of contact lens automatic production, in particular to a contact lens dry sheet color printing method and system, and the method comprises the following specific steps: S10, moving a dry sheet to be subjected to transfer printing to a carrying unit; a dry sheet to be subjected to transfer printing is carried and placed on the dry sheet carrier; s20, the dry sheet carrier with the dry sheet to be subjected to transfer printing is moved to a dry sheet color printing unit, and pattern color printing is conducted on the dry sheet to be subjected to transfer printing; s30, moving the dry sheet carrier loaded with the printed dry sheet to a dry sheet receiving unit; and the printed dry sheet is carried to a material receiving disc, and dry sheet discharging is completed. According to the dry contact lens color printing method and system, a traditional die printing production process is replaced, complex process steps are reduced, and the production efficiency is greatly improved; the dry sheets can be stored in advance, and the stored dry sheets are subjected to rapid color printing according to market requirements, so that rapid on-demand production is realized, the scheduling is reduced, the production efficiency of a production line is improved, and the market adaptability is extremely high.

Description

Technical Field

[0001] The invention relates to the technical field of automated production of contact lenses, in particular to a contact lens dry sheet printing method and system. Background Art

[0002] In the production of colored contact lenses, conventional lens pattern printing is to print the pattern in a mold, and then shape the liquid raw material in the mold to achieve the color printing effect. This method is relatively complicated and cannot produce colored contact lenses in batches quickly.

[0003] Dry lens printing is a special contact lens manufacturing process. The printing color is placed after the mold is separated and the lens is taken out. It can be mass-produced according to the colorless transparent lens, which is convenient for production scheduling and saving production costs. After the mold is separated and the lens is taken out, the dry lens is printed with different patterns and colors to create different cosmetic contact lens products with distinctive personalities.

[0004] At present, the technical support for related equipment is relatively weak, and there is no mature equipment that can print colors directly on dry films, which cannot meet market demand and urgently needs to provide a solution. Summary of the invention

[0005] The object of the present invention is to provide a contact lens dry sheet printing method and system which can realize rapid on-demand production, reduce scheduling, and improve production efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention discloses a contact lens dry sheet printing method, comprising a dry sheet loading unit, a carrying unit, a dry sheet printing unit, and a dry sheet receiving unit; the specific steps are as follows:

[0008] S10. The dry sheet loading unit moves the dry sheet to be printed to the carrier unit; the dry sheet loading unit moves the dry sheet to be printed and places it on the dry sheet carrier in the carrier unit;

[0009] S20. The transport unit moves the dry film carrier on which the dry film to be printed is placed to the dry film printing unit, and the dry film printing unit performs pattern printing on the dry film to be printed;

[0010] S30. The transport unit moves the dry film carrier on which the printed dry film is placed to the dry film receiving unit; the dry film receiving unit moves the printed dry film from the dry film carrier to the receiving tray;

[0011] S40. Repeat the above steps S10 to S30 to achieve batch dry film printing.

[0012] The present invention also provides a contact lens dry film printing system for implementing the above-mentioned contact lens dry film printing method, including a dry film loading unit, a dry film carrier for carrying the dry film, a transport unit for operating the dry film carrier, a dry film printing unit for printing patterns on the dry film, and a dry film collecting unit for collecting the printed dry film.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present contact lens dry sheet printing method and system coordinate the loading, operation, printing and unloading of contact lens dry sheets, and realize direct printing on dry sheets, which can realize automated batch production. The contact lens dry sheet printing equipment replaces the traditional mold printing production process, reduces complex process steps, and greatly improves production efficiency; in actual application, the dry sheets can be stored in advance, and according to market demand, the present contact lens dry sheet printing method and system can be used to quickly print the stored dry sheets, thereby realizing rapid on-demand production, reducing scheduling, and improving the production efficiency of the production line. It has strong market adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the dry sheet loading unit of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the dry sheet loading unit of the present invention;

[0019] Figure 5 It is a schematic structural diagram of the carrier unit of the present invention;

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the carrier unit of the present invention;

[0021] Figure 7 for Figure 6 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 8 is a schematic diagram of the three-dimensional structure of the carrier unit of the present invention from another perspective;

[0023] Fig. 9 It is a schematic diagram of the internal structure of the dry film carrier of the present invention;

[0024] Fig.10 It is a three-dimensional structural schematic diagram of the dry sheet printing unit of the present invention;

[0025] Fig.11 for Fig.10 A schematic diagram of the enlarged structure at A in the middle;

[0026] Fig.12 It is a structural schematic diagram of the dry film printing unit of the present invention;

[0027] Fig.13 It is a structural schematic diagram of the dry film printing unit of the present invention from another perspective;

[0028] Fig.14 It is a schematic diagram of the three-dimensional structure of the material receiving unit of the present invention. DETAILED DESCRIPTION

[0029] 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 the embodiments.

[0030] refer to Figure 1-14 As shown, a contact lens dry film printing method includes a dry film loading unit 200, a carrying unit 300, a dry film printing unit 400, and a dry film receiving unit 500; the specific steps are as follows:

[0031] S10. The dry sheet loading unit 200 moves the dry sheet to be printed to the carrier unit 300; the dry sheet loading unit 200 transports the dry sheet to be printed and places it on the dry sheet carrier 800 in the carrier unit 300;

[0032] S20. The transport unit 300 moves the dry film carrier 800 on which the dry film to be printed is placed to the dry film printing unit 400, and the dry film printing unit 400 performs pattern printing on the dry film to be printed;

[0033] S30. The transport unit 300 moves the dry film carrier 800 on which the printed dry film is placed to the dry film receiving unit 500; the dry film receiving unit 500 moves the printed dry film from the dry film carrier 800 to the receiving tray 710;

[0034] S40. Repeat the above steps S10 to S30 to achieve batch dry film printing.

[0035] The present contact lens dry sheet color printing method coordinates the loading, operation, color printing and unloading of contact lens dry sheets to realize direct color printing on dry sheets, which can realize automated batch production. The contact lens dry sheet color printing equipment replaces the traditional mold printing production process, reduces the complicated process steps, and greatly improves the production efficiency; in actual application, the dry sheets can be stored in advance, and according to market demand, the stored dry sheets can be quickly printed with the contact lens dry sheet color printing equipment, thereby realizing rapid on-demand production, reducing scheduling, and improving the production efficiency of the production line, and it has strong market adaptability.

[0036] In this embodiment, the dry film loading unit 200 includes a tray transport mechanism 210, a visual mechanism 220, a stage mechanism 230, and a dry film transport robot arm 240.

[0037] In step S10, it also includes:

[0038] S11. The tray transport mechanism 210 transports the dry film tray 110 to the stage mechanism 230;

[0039] S12. The stage mechanism 230 moves the dry film carrier 110 to the visual mechanism 220, and the visual mechanism 220 visually locates the dry film to be printed in the dry film carrier 110;

[0040] S13. The dry film transport robot 240 transports the dry film to be printed from the dry film carrier 110 to the dry film carrier 800, completing the dry film loading.

[0041] In this embodiment, the tray transport mechanism 210 is used to transport and load the dry film tray 110, thereby improving the efficiency of dry film loading; the visual mechanism 220 visually locates the dry film to be printed in the dry film tray 110, so as to assist the dry film transport robot 240 in accurate positioning and grasping, thereby improving the accuracy of the dry film loading and transporting process; the empty dry film tray 110 is moved by the stage mechanism 230 to the tray transport mechanism 210, and the tray transport mechanism 210 moves the empty dry film tray 110 out, and moves the loaded dry film tray 110 back into the stage mechanism 230, thereby improving the efficiency of dry film loading, so as to expand and adapt to multiple types of automated production lines.

[0042] The dry film loading unit 200 coordinates the actions of tray transport, dry film identification and dry film transport. It cooperates with a visual mechanism to visually locate and guide the dry films, and combines with a dry film transport robot 240 to achieve efficient and accurate loading of dry films.

[0043] In this embodiment, the tray transport mechanism 210 includes a tray moving drive device 211, a tray lifting drive device 212 drivingly connected to the execution end of the tray moving drive device 211, and a tray fixture 213 drivingly connected to the execution end of the tray lifting drive device 212; the tray lifting drive device 212 drives the tray fixture 213 to move up and down, so that the tray fixture 213 can pick up and place the dry film tray 110; the tray moving drive device 211 drives the tray lifting drive device 212 and the tray fixture 213 to move, so as to transport the dry film to be printed.

[0044] Specifically, the carrier moving drive device 211 can adopt a linear motor, and the carrier lifting drive device 212 can adopt a lifting cylinder; the carrier tooling 213 can adopt a tooling such as a clamping claw or a suction cup that can realize the carrier clamping and placement.

[0045] In this embodiment, the carrier mechanism 230 includes a turntable drive device 231 and a tray table 232 which is drive-connected to the execution end of the turntable drive device 231, and a plurality of tray positioning grooves 233 are provided on the tray table 232; the tray transport mechanism 210 transports the dry film tray 110 to the tray positioning grooves 233, and the turntable drive device 231 drives the tray table 232 to move, driving the dry film tray 110 placed in the tray positioning grooves 233 to enter the visual mechanism 220. After the tray table 232 is transported to complete the transfer of the dry film to be printed, the turntable drive device 231 drives the tray table 232 to move, and moves the empty dry film tray 110 to the tray transport mechanism 210 and moves it out.

[0046] Specifically, the turntable drive device 231 can adopt a rotating motor. The present carrier mechanism 230 has a compact structure. The turntable drive device 231 is adopted to drive the tray table 232 to rotate, so that it rotates and feeds between the tray transport mechanism 210 and the dry film transport robot arm 240, which is convenient for the dry film carrier 110 to carry the dry film and to move out the empty dry film carrier 110, thereby improving the production efficiency.

[0047] In this embodiment, a fill light board 250 is further provided below the tray table 232. Specifically, the light of the fill light board 250 passes through the tray positioning groove 233 to fill light on the bottom of the dry film tray 110, and assists the visual mechanism 220 in visually identifying the dry film.

[0048] In this embodiment, a tray bin 100 is also provided at the tray transport mechanism 210; the tray transport mechanism 210 transports the dry film tray 110 carrying the dry film to be transferred from the tray bin 100 to the stage mechanism 230; and the tray transport mechanism 210 transports the empty dry film tray 110 from the stage mechanism 230 to the tray bin 100.

[0049] In this embodiment, the visual mechanism 220 includes an identification lens 223 for identifying dry films and an identification column 221 for installing the identification lens 223; the identification column 221 is installed at one end of the stage mechanism 230 close to the dry film transport robot 240; the identification lens 223 is slidably installed on the identification column 221 using a sliding track module 222.

[0050] In actual application, the recognition lens 223 obtains the image of the dry film in the dry film carrier 110, accurately locates the position of the dry film, and transmits the location to the dry film transport robot 240, thereby providing precision calibration and assistance for the transport work of the dry film transport robot 240; improving the transport efficiency and accuracy to avoid damaging the fragile dry film and reduce the loss of the dry film.

[0051] In this embodiment, the dry film printing unit 400 includes a pad printing head assembly 410, a pad printing lifting mechanism 430 for driving the pad printing head assembly 410 to lift and lower, a plate mechanism 440 for providing pad printing patterns for the pad printing head assembly 410, and a cleaning mechanism 420 for cleaning the pad printing head assembly 410; the pad printing lifting mechanism 430 includes a lifting connecting plate 432 for mounting the pad printing head assembly 410, and a pad printing lifting drive 431 for driving the lifting connecting plate 432 to lift and lower;

[0052] In step S20, it also includes:

[0053] S21. The pad printing lifting mechanism 430 drives the pad printing head assembly 410 to the cleaning mechanism 420, and the cleaning mechanism 420 cleans the execution end of the pad printing head assembly 410;

[0054] S22. The pad printing lifting mechanism 430 drives the pad printing head assembly 410 to the drawing plate mechanism 440, so that the execution end of the pad printing head assembly 410 contacts the drawing plate mechanism 440 to obtain the pattern to be pad printed;

[0055] S23 . The pad printing lifting mechanism 430 drives the pad printing head assembly 410 to the dry film carrier 800 , so that the ink on the execution end of the pad printing head assembly 410 is printed on the dry film on the dry film carrier 800 .

[0056] In actual application, the pad printing lifting mechanism 430 can adjust the height of the pad printing head assembly 410 to meet the different height requirements of cleaning, ink dipping and printing actions in the dry film pad printing operation; the pad printing lifting mechanism 430 simultaneously drives multiple pad printing head assemblies 410 to the cleaning mechanism 420, and the cleaning mechanism 420 cleans the execution end of the pad printing head assembly 410 to avoid excess ink residue affecting the quality of the printing operation; the drawing plate mechanism 440 prepares the pattern ink with pad printing, and the pad printing head assembly 410 performs contact acquisition; the pad printing lifting mechanism 430 drives the pad printing head assembly 410 that has been dipped in the pattern ink to be printed to the dry film carrier 800, and drives the pad printing head assembly 410 to contact the dry film on the dry film carrier 800, and prints the pattern ink on the dry film.

[0057] The dry sheet printing unit 400 completes cleaning, inking and printing operations at one station, and can realize single batch pattern printing on demand. It has a compact structure, occupies a small space, and has high pad printing efficiency. Specifically, the pad printing lifting drive 431 can use a linear motor to realize the lifting drive of the lifting connecting plate 432 at different height requirements; and multiple groups of pad printing head assemblies 410 can be assembled on demand through the pad printing connecting plate 432.

[0058] In this embodiment, the pad printing head assembly 410 includes a pad printing rubber head 411, a fine-tuning slide 412 for adjusting the Y-axis installation position of the pad printing rubber head 411, and an upper adjustment end of the fine-tuning slide 412 is provided with an adjustment buckle 413 for connecting with the lifting connecting plate 432. Specifically, the fine-tuning slide 412 is a miniature slide that can be adjusted manually or electrically, and the pad printing rubber head 411 is installed at the lower adjustment end of the fine-tuning slide 412 to achieve fine-tuning of the Y-axis installation position of the pad printing rubber head 411; the upper adjustment end of the fine-tuning slide 412 is connected to the lifting connecting plate 432 by an adjustment buckle 413, and an assembly hole is provided on the adjustment buckle 413, and the installation position of the fine-tuning slide 412 can be quickly adjusted by bolts. The adjustment buckle 413 is provided with a fine-tuning scale for marking the offset position, so as to achieve fine-tuning of the X-axis position of the pad printing rubber head 411 and improve adaptability.

[0059] In this embodiment, the cleaning mechanism 420 includes a cleaning flip drive device 421, a reel assembly 423, and a wiping drive device 422 that drives the reel assembly 423 to wipe the pad printing head assembly 410; the reel assembly 423 and the wiping drive device 422 are both installed on a cleaning connecting plate 424, and the cleaning connecting plate 424 is drivingly connected to the execution end of the cleaning flip drive device 421;

[0060] During the cleaning operation, the cleaning flip driving device 421 drives the cleaning connecting plate 424 to move the tape reel assembly 423 to below the pad printing head assembly 410, and the pad printing lifting mechanism 430 drives the pad printing head assembly 410 to contact the tape reel assembly 423 to achieve cleaning and wiping.

[0061] Specifically, the cleaning flipping driving device 421 can use a rotary cylinder to rotate the cleaning connecting plate 424; after cleaning, the cleaning flipping driving device 421 drives the reel assembly 423 to rotate back to avoid the subsequent pad printing action from colliding with the pad printing head assembly 410.

[0062] In this embodiment, the reel assembly 423 includes a cleaning reel 4231 and a cleaning auxiliary roller 4233 for tensioning the cleaning belt; the cleaning reel 4231 is installed on the cleaning connecting plate 424, and the cleaning reel 4231 is connected to the output end of the wiping drive device 422; multiple cleaning auxiliary rollers 4233 are installed on the roller frame 4232 to tension and support the cleaning belt, and the pad printing head assembly 410 contacts the tensioned cleaning belt to achieve ink erasure; the roller frame 4232 is connected to the cleaning connecting plate 424. Specifically, there are two cleaning reels 4231, one for winding the cleaning belt of the cleaning pad printing head assembly 410, and the other for winding the cleaning belt after cleaning; the wiping drive device 422 can use a rotary motor.

[0063] In this embodiment, the drawing board mechanism 440 includes a printed board body 443, a board driving device 441 for driving the printed board body 443 to move, an ink cartridge 444 for coating ink, and a top box frame 445 for supporting the ink cartridge 444 to slide against the printed board body 443; the printed board body 443 and the ink cartridge 444 are always in sliding contact; when the board driving device 441 drives the printed board body 443 to move to the pad printing head assembly 410, the printed board body 443 and the ink cartridge 444 slide relative to each other, and the ink is coated on the printed board body 443, waiting for the pad printing head assembly 410 to contact the printed board body 443 and dip in ink.

[0064] Specifically, the printed circuit board 443 can be made of a patterned steel plate, and the top box frame 445 is used to install the ink cartridge 444, and the ink cartridge 444 is always in contact with the printed circuit board 443; the printed circuit board 443 moves under the drive of the board driving device 441, so that the ink in the ink cartridge 444 is coated on the printed circuit board 443.

[0065] Specifically, the printed board body 443 is a patterned steel plate, and when the ink cartridge 444 abuts against the printed board body 443, the printed board body 443 moves under the drive of the board displacement driving device 441, so that the ink in the ink cartridge 444 is coated on the printed board body 443. The execution end of the board displacement driving device 441 is also connected to a board fine-tuning frame 442 for manually fine-tuning the position of the printed board body 443.

[0066] In this embodiment, the pad printing lifting mechanism 430 , the plate mechanism 440 and the cleaning mechanism 420 are all installed on the pad printing frame 450 ; the pad printing lifting mechanism 430 is located above the dry film carrier 800 .

[0067] In this embodiment, the transport unit 300 includes a transport ring frame 320, a plurality of transport slides 340 for loading dry film carriers 800, a positioning assembly 330 for positioning the transport slides 340, and a transport drive device 310 for driving the transport ring frame 320 to feed; the transport slide 340 is assembled on the transport ring frame 320, and the transport drive device 310 drives the transport ring frame 320 to rotate along the pad printing direction, driving the transport slide 340 to move on the transport ring frame 320, and further driving the dry film carrier 800 to move; the positioning assembly 330 positions the transport slide 340, thereby realizing the positioning of the dry film carrier 800.

[0068] The transport drive device 310 can use a drive motor, and the positioning component 330 can position the transport slide 340, and the auxiliary transport slide 340 can stop at the predetermined position for loading, unloading and printing dry films as needed; the transport unit 300 can realize continuous feeding of multiple dry film carriers 800, which is convenient for continuous pad printing of multiple dry films and improves pad printing efficiency.

[0069] In this embodiment, the carrier ring frame 320 includes an annular track 321, a transmission wheel 322 and a transmission belt 323; the transmission belt 323 is wound around two transmission wheels 322, and a plurality of transmission protrusions 324 for connecting the carrier slide 340 are arranged on the transmission belt 323; the carrier slide 340 is slidably assembled on the annular track 321, and the carrier slide 340 is assembled and connected with the transmission protrusions 324. The output end of the carrier drive device 310 is connected to and drives the transmission wheel 322 to rotate, the transmission wheel 322 drives the transmission belt 323 to rotate, and the transmission belt 323 drives the carrier slide 340 to move on the annular track 321 through the transmission protrusions 324, so as to realize the circular circulation of the dry film carrier 800, continuously transport the dry film to be printed in the printing direction, and improve the printing efficiency.

[0070] In this embodiment, the transport slide 340 includes a slide carrier plate 342 for mounting the dry film carrier 800 and slide side plates 341 mounted on both sides of the slide carrier plate 342; the lower end of the slide side plate 341 on one side is provided with a slide slot 343 for assembling and connecting with the transmission protrusion 324, and the outer end face of the slide side plate 341 on the other side is provided with a positioning slot plate 345 for cooperating with the positioning assembly 330; the inner side of the slide side plate 341 is provided with a sliding roller 344 for assembling with the annular track 321.

[0071] Specifically, the dry film carrier 800 is installed on the slide plate 342, and the slide side plates 341 are arranged on both sides of the slide plate 342; the inner end surface of the slide side plate 341 is installed with a sliding roller 344, which is used to roll against the annular track 321 and assist the slide plate 342 to slide; the lower end of one side of the slide side plate 341 is provided with a slide groove 343 for assembly with the sliding protrusion 324; the outer end surface of the other side of the slide side plate 341 is provided with a positioning groove plate 345, which is convenient for the positioning component 330 to position the transport slide 340.

[0072] In this embodiment, the positioning assembly 330 includes a positioning wedge block 335 and a positioning drive device 331 for driving the positioning wedge block 335 to embed into the positioning slot plate 345 ; specifically, the positioning drive device 331 may use a cylinder to drive the positioning wedge block 335 to embed into the positioning slot plate 345 .

[0073] In this embodiment, multiple positioning wedge blocks 335 are all installed on the positioning rod 333, and the positioning rod 333 is rotatably installed on the positioning shaft seat 332; the execution end of the positioning drive device 331 is driven and connected with a driving connecting rod 334, one end of the driving connecting rod 334 is rotatably connected to the positioning drive device 331, and the other end of the driving connecting rod 334 is connected to the positioning rod 333; the positioning drive device 331 pushes the driving connecting rod 334 so that the driving connecting rod 334 drives the positioning rod 333 to rotate with the positioning shaft seat 332 as a reference, and then the positioning rod 333 drives the positioning wedge block 335 to rotate and embed the positioning wedge block 335 into the positioning slot plate 345, thereby completing the overall positioning of the transport slide 340, and then realizing the positioning function of the predetermined position of the dry film carrier 800.

[0074] In this embodiment, the dry film carrier 800 includes a carrier base 810 and a dry film suction head 830 installed on the carrier base 810 for sucking the dry film; the carrier base 810 is provided with an air pipe port 820, and the air pipe port 820 is connected to the dry film suction head 830;

[0075] The carrier base 810 is provided with an internal air circuit 811, the dry film suction head 830 is provided with a plurality of film suction air holes 831, the air circuit pipe opening 820 is installed at one side port of the internal air circuit 811, and the dry film suction head 830 is installed at the other side port of the internal air circuit 811; the air circuit pipe opening 820, the internal air circuit 811 and the film suction air holes 831 are connected; the plurality of air circuit pipe openings 820 are all connected to the air-electric slip ring 840, and the air-electric slip ring 840 is connected to an external air extraction device.

[0076] Specifically, air is extracted by an external air extraction device, branched through a gas-electric slip ring 840 , and connected to a plurality of air path pipe openings 820 . When a dry sheet is placed on a dry sheet suction head 830 , the suction hole 831 is blocked to form a negative pressure, thereby adsorbing the dry sheet on the dry sheet suction head 830 .

[0077] In this embodiment, the unloading position of the dry sheet receiving unit 500 is provided with a tray moving device 600 and a receiving tray device 700; the dry sheet receiving unit 500 includes a receiving mechanism 510 and a receiving tool 520; the receiving tray device 700 includes a receiving mechanism 720, a receiving tool 730 and a receiving tray bin 740;

[0078] In step S30, it also includes:

[0079] S31. The receiving mechanism 510 drives the receiving tool 520 to the dry film carrier 800 on the transport mechanism 300; the receiving tool 520 picks up the printed dry film from the dry film carrier 800;

[0080] S32. The receiving mechanism 510 drives the receiving tool 520 to move, thereby driving the printed dry film to move to the tray shifting device 600, and placing the printed dry film on the receiving tray 710 at the tray shifting device 600;

[0081] S33. The tray shifting device 600 moves the receiving tray 710 carrying the printed dry film to the receiving tray device 700;

[0082] S34. The closing mechanism 720 drives the closing tooling 730 to move the receiving tray 710 carrying the printed dry film from the tray moving device 600 to the receiving tray bin 740, and then the closing mechanism 720 drives the closing tooling 730 to move the empty receiving tray 710 from the receiving tray bin 740 to the tray moving device 600.

[0083] Specifically, the material receiving mechanism 510 includes a material receiving X-axis driving device 512, a material receiving Y-axis driving device 511, and a material receiving lifting driving device 513. The material receiving mechanism 510 can realize an XYZ three-axis driving structure; the material receiving tool 520 can use a suction cup or a clamping claw, etc., which can pick up and place multiple dry sheets. The tray closing mechanism 720 includes a tray closing displacement driving device 723, a tray closing lifting driving device 722, and a turntable driving device 721; the tray closing tool 730 can use a clamping claw or a suction cup, etc., which can realize a tool for grabbing and placing the tray 710.

[0084] The present invention also provides a contact lens dry film printing system for implementing the above-mentioned contact lens dry film printing method, including a dry film loading unit 200, a dry film carrier 800 for carrying the dry film, a transport unit 300 for operating the dry film carrier 800, a dry film printing unit 400 for printing patterns on the dry film, and a dry film receiving unit 500 for receiving the printed dry film.

[0085] This contact lens dry sheet color printing system coordinates the loading, operation, color printing and unloading of contact lens dry sheets, and realizes direct color printing on dry sheets, which can realize automated mass production. This contact lens dry sheet color printing equipment replaces the traditional mold printing production process, reduces complex process steps, and greatly improves production efficiency; in actual application, the dry sheets can be stored in advance, and according to market demand, the contact lens dry sheet color printing equipment can be used to quickly print the stored dry sheets, thereby realizing rapid on-demand production, reducing scheduling, and improving the production efficiency of the production line. It has strong market adaptability.

[0086] 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 without departing from the scope defined by the spirit of the present invention.

Claims

1. A contact lens dry sheet printing method, characterized in that: The invention comprises a dry film loading unit (200), a carrying unit (300), a dry film printing unit (400), and a dry film receiving unit (500); the specific steps are as follows: S10. The dry sheet loading unit (200) moves the dry sheet to be printed to the carrier unit (300); the dry sheet loading unit (200) moves the dry sheet to be printed and places it on the dry sheet carrier (800) in the carrier unit (300); S20. The transport unit (300) moves the dry sheet carrier (800) on which the dry sheet to be printed is placed to the dry sheet printing unit (400), and the dry sheet printing unit (400) performs pattern printing on the dry sheet to be printed; S30. The transport unit (300) moves the dry film carrier (800) on which the printed dry film is placed to the dry film receiving unit (500); the dry film receiving unit (500) moves the printed dry film from the dry film carrier (800) to the receiving tray (710); S40. Repeat the above steps S10 to S30 to achieve batch dry film printing.

2. A contact lens dry sheet printing method according to claim 1, characterized in that: The dry film loading unit (200) comprises a tray transport mechanism (210), a visual mechanism (220), a stage mechanism (230), and a dry film transport mechanical arm (240); In step S10, it also includes: S11. The tray transport mechanism (210) transports the dry film tray (110) to the stage mechanism (230); S12. The stage mechanism (230) moves the dry film carrier (110) to the visual mechanism (220), and the visual mechanism (220) visually locates the dry film to be printed in the dry film carrier (110); S13. The dry film transporting robot arm (240) transports the dry film to be printed from the dry film loading tray (110) to the dry film carrier (800), completing the dry film loading.

3. A contact lens dry sheet printing method according to claim 2, characterized in that: The tray transport mechanism (210) comprises a tray moving drive device (211), a tray lifting drive device (212) drivingly connected to the execution end of the tray moving drive device (211), and a tray tooling (213) drivingly connected to the execution end of the tray lifting drive device (212); The tray lifting drive device (212) drives the tray loading tool (213) to move up and down, so that the tray loading tool (213) can pick up and place the dry film tray (110); the tray moving drive device (211) drives the tray lifting drive device (212) and the tray loading tool (213) to move, so as to transport the dry film to be printed.

4. A contact lens dry sheet printing method according to claim 2, characterized in that: The platform mechanism (230) comprises a turntable driving device (231) and a disk-carrying table (232) drivingly connected to the execution end of the turntable driving device (231); a plurality of disk-carrying positioning grooves (233) are provided on the disk-carrying table (232); The tray transport mechanism (210) transports the dry film tray (110) to the tray positioning groove (233), and the turntable driving device (231) drives the tray table (232) to rotate, driving the dry film tray (110) placed in the tray positioning groove (233) to enter the visual mechanism (220); after the transportation of the dry film to be printed on the tray table (232) is completed, the turntable driving device (231) drives the tray table (232) to rotate, and moves the empty dry film tray (110) to the tray transport mechanism (210), and the tray transport mechanism (210) moves the empty dry film tray (110) out.

5. A contact lens dry sheet printing method according to claim 2, characterized in that: A tray material bin (100) is also provided at the tray transport mechanism (210); the tray transport mechanism (210) transports the dry film tray (110) carrying the dry film to be printed from the tray material bin (100) to the platform mechanism (230); and the tray transport mechanism (210) transports an empty dry film tray (110) from the platform mechanism (230) to the tray material bin (100).

6. A contact lens dry sheet printing method according to claim 2, characterized in that: The visual mechanism (220) comprises an identification lens (223) for identifying a dry film and an identification column (221) for mounting the identification lens (223); the identification column (221) is mounted on one end of the stage mechanism (230) close to the dry film transporting mechanical arm (240); the identification lens (223) is slidably mounted on the identification column (221) using a sliding track module (222).

7. A contact lens dry sheet printing method according to claim 1, characterized in that: The dry sheet printing unit (400) comprises a pad printing head assembly (410), a pad printing lifting mechanism (430) for driving the pad printing head assembly (410) to lift and lower, a plate mechanism (440) for providing a pad printing pattern for the pad printing head assembly (410), and a cleaning mechanism (420) for cleaning the pad printing head assembly (410); the pad printing lifting mechanism (430) comprises a lifting connecting plate (432) for mounting the pad printing head assembly (410), and a pad printing lifting drive (431) for driving the lifting connecting plate (432) to lift and lower; In step S20, it also includes: S21. The pad printing lifting mechanism (430) drives the pad printing head assembly (410) to the cleaning mechanism (420), and the cleaning mechanism (420) cleans the execution end of the pad printing head assembly (410); S22. The pad printing lifting mechanism (430) drives the pad printing head assembly (410) to the drawing plate mechanism (440), so that the execution end of the pad printing head assembly (410) contacts the drawing plate mechanism (440) to obtain the pattern to be pad printed; S23. The pad printing lifting mechanism (430) drives the pad printing head assembly (410) to the dry film carrier (800) so that the ink on the execution end of the pad printing head assembly (410) is printed on the dry film on the dry film carrier (800).

8. A contact lens dry sheet printing method according to claim 7, characterized in that: The pad printing head assembly (410) comprises a pad printing rubber head (411), a fine-tuning slide (412) for adjusting the Y-axis installation position of the pad printing rubber head (411), and an upper adjustment end of the fine-tuning slide (412) is provided with an adjustment buckle (413) for connecting with a lifting connecting plate (432).

9. A contact lens dry sheet printing method according to claim 7, characterized in that: The cleaning mechanism (420) comprises a cleaning flipping driving device (421), a reel assembly (423) and a wiping driving device (422) for driving the reel assembly (423) to wipe the pad printing head assembly (410); the reel assembly (423) and the wiping driving device (422) are both mounted on a cleaning connecting plate (424), and the cleaning connecting plate (424) is drivingly connected to an execution end of the cleaning flipping driving device (421); During the cleaning operation, the cleaning flip driving device (421) drives the cleaning connecting plate (424) to move the tape reel assembly (423) to below the pad printing head assembly (410), and the pad printing lifting mechanism (430) drives the pad printing head assembly (410) to contact the tape reel assembly (423) to achieve cleaning and wiping.

10. A contact lens dry sheet printing method according to claim 9, characterized in that: The belt reel assembly (423) includes a cleaning belt reel (4231) and a cleaning auxiliary roller (4233) for tensioning the cleaning belt; the cleaning belt reel (4231) is installed on the cleaning connecting plate (424), and the cleaning belt reel (4231) is connected to the output end of the wiping drive device (422); multiple cleaning auxiliary rollers (4233) are installed on a roller frame (4232) to tension and support the cleaning belt, and the pad printing head assembly (410) contacts the tensioned cleaning belt to achieve ink erasure; the roller frame (4232) is connected to the cleaning connecting plate (424).

11. A contact lens dry sheet printing method according to claim 7, characterized in that: The drawing board mechanism (440) includes a printed board body (443), a board displacement driving device (441) for driving the printed board body (443) to move, an ink cartridge (444) for applying ink, and a top box frame (445) for supporting the ink cartridge (444) to slide against the printed board body (443); The printed board body (443) and the ink cartridge (444) are always in sliding contact; when the board body displacement driving device (441) drives the printed board body (443) to move to the pad printing head assembly (410), the printed board body (443) and the ink cartridge (444) slide relative to each other, so that ink is coated on the printed board body (443), waiting for the pad printing head assembly (410) to contact the printed board body (443) and dip in ink.

12. A contact lens dry sheet printing method according to claim 1, characterized in that: The transport unit (300) comprises a transport ring frame (320), a plurality of transport slides (340) for loading the dry film carriers (800), a positioning assembly (330) for positioning the transport slides (340), and a transport driving device (310) for driving the transport ring frame (320) to feed materials; The transport slide (340) is mounted on the transport ring frame (320); the transport driving device (310) drives the transport ring frame (320) to rotate along the pad printing direction, driving the transport slide (340) to move on the transport ring frame (320), thereby driving the dry film carrier (800) to move; the positioning component (330) positions the transport slide (340), thereby realizing the positioning of the dry film carrier (800).

13. A contact lens dry sheet printing method according to claim 12, characterized in that: The carrying ring frame (320) comprises an annular track (321), a transmission wheel (322) and a transmission belt (323); the transmission belt (323) is wound around two transmission wheels (322), and a plurality of transmission protrusions (324) for connecting to a carrying slide (340) are arranged on the transmission belt (323); the carrying slide (340) is slidably assembled on the annular track (321), and the carrying slide 340 is assembled and connected to the transmission protrusions (324); The output end of the transport driving device (310) is connected to and drives the transmission wheel (322) to rotate, the transmission wheel (322) drives the transmission belt (323) to rotate, and the transmission belt (323) drives the transport slide (340) to move on the circular track (321) through the transmission protrusion (324).

14. A contact lens dry sheet printing method according to claim 13, characterized in that: The transport slide (340) comprises a slide carrier plate (342) for mounting a dry film carrier (800) and slide side plates (341) mounted on both sides of the slide carrier plate (342); a slide slot (343) for assembly and connection with a transmission protrusion (324) is provided at the lower end of the slide side plate (341) on one side, and a positioning slot plate (345) for cooperating with a positioning assembly (330) is provided on the outer end surface of the slide side plate (341) on the other side; and a sliding roller (344) for assembly with a circular track (321) is provided on the inner side of the slide side plate (341).

15. A contact lens dry sheet printing method according to claim 14, characterized in that: The positioning assembly (330) includes a positioning wedge (335) and a positioning drive device (331) for driving the positioning wedge (335) to embed into the positioning slot plate (345); The plurality of positioning wedges (335) are all mounted on a positioning rod (333), and the positioning rod (333) is rotatably mounted on a positioning shaft seat (332); the execution end of the positioning drive device (331) is drivingly connected to a driving connecting rod (334), one end of the driving connecting rod (334) is rotatably connected to the positioning drive device (331), and the other end is connected to the positioning rod (333); The positioning drive device (331) pushes the driving connecting rod (334) so ​​that the driving connecting rod (334) drives the positioning rod (333) to rotate with the positioning shaft seat (332) as a reference, and then the positioning rod (333) drives the positioning wedge block (335) to rotate and embed the positioning wedge block (335) into the positioning slot plate (345).

16. A contact lens dry sheet printing method according to claim 1, characterized in that: The dry film carrier (800) comprises a carrier base (810) and a dry film suction head (830) mounted on the carrier base (810) for sucking the dry film; the carrier base (810) is provided with an air pipe opening (820), and the air pipe opening (820) is connected to the dry film suction head (830); The carrier base (810) is provided with an internal air circuit (811), the dry film suction head (830) is provided with a plurality of film suction air holes (831), the air circuit pipe opening (820) is installed at a port on one side of the internal air circuit (811), and the dry film suction head (830) is installed at a port on the other side of the internal air circuit (811); the air circuit pipe opening (820), the internal air circuit (811) and the film suction air holes (831) are connected.

17. A contact lens dry sheet printing method according to claim 1, characterized in that: The unloading position of the dry sheet receiving unit (500) is provided with a tray moving device (600) and a receiving tray device (700); the dry sheet receiving unit (500) comprises a receiving mechanism (510) and a receiving tool (520); the receiving tray device (700) comprises a receiving mechanism (720), a receiving tool (730) and a receiving tray bin (740); In step S30, it also includes: S31. The receiving mechanism (510) drives the receiving tool (520) to the dry film carrier (800) on the transport mechanism (300); the receiving tool (520) picks up the printed dry film from the dry film carrier (800); S32. The receiving mechanism (510) drives the receiving tool (520) to move, thereby driving the printed dry film to move to the tray moving device (600), and placing the printed dry film on the receiving tray (710) at the tray moving device (600); S33. The tray moving device (600) moves the receiving tray (710) carrying the printed dry film to the receiving tray device (700); S34. The tray closing mechanism (720) drives the tray closing tool (730) to move the receiving tray (710) carrying the printed dry film from the tray moving device (600) to the receiving tray material bin (740), and then the tray closing mechanism (720) drives the tray closing tool (730) to move the empty receiving tray (710) from the receiving tray material bin (740) to the tray moving device (600).

18. A contact lens dry printing system, characterized in that: A contact lens dry film printing method for implementing any one of claims 1 to 17, comprising a dry film loading unit (200), a dry film carrier (800) for carrying a dry film, a transport unit (300) for operating the dry film carrier (800), a dry film printing unit (400) for printing patterns on the dry film, and a dry film collecting unit (500) for collecting the printed dry film.

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