A contact lens dry sheet demolding and sheeting method and system

Abstract

The present application relates to the technical field of contact lens automatic production, in particular to a contact lens dry piece mold splitting and taking method and system, which comprises a mold carrying unit, a mold stripping unit, a piece taking unit and a placing unit. In actual use, the mold carrying unit provides a batch of mold to be split and taken quickly, improving the mold feeding efficiency; the mold stripping unit and the piece taking unit are matched, the mold is quickly split after the mold is lowered, and then the dry pieces are taken out from the upper mold in batches, realizing automatic batch pickup of components quickly, improving the dry piece taking efficiency; and the dry pieces are placed into the tray efficiently by the placing unit, avoiding unnecessary turnover work, realizing quick tray feeding of dry pieces; the contact lens dry piece mold splitting and taking method and system have compact overall structure, reduce manual operation in the mold splitting and taking production stage, and improve the mold splitting and taking efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of contact lens automation production, in particular to a contact lens dry piece mold separation and taking method and system. BACKGROUND

[0002] In the production process of contact lens dry piece, after injecting liquid into the lower mold and combining with the upper mold, the upper mold and the lower mold need to be opened after curing, and the lens is separated from the mold and the complete contact lens (dry piece) is taken out.

[0003] In the production stage of mold separation and taking of dry piece, manual or semi-automatic mold separation is usually used. This way has high labor intensity, low production efficiency, and is easy to cause damage and pollution to the dry piece, resulting in low yield and low pass rate, which cannot meet the market demand, so a solution is needed. SUMMARY

[0004] The purpose of the present application is to provide a contact lens dry piece mold separation and taking method and system which can automatically carry and feed, quickly demold, efficiently separate and take the dry piece, and batch into the tray.

[0005] To achieve the above purpose, the present application provides the following technical scheme.

[0006] The present application provides a contact lens dry piece mold separation and taking method, which comprises a mold carrying unit for carrying the mold, a demolding unit for opening the upper mold and the lower mold of the mold, a taking unit for taking out and transferring the dry piece, and a placing unit for placing the dry piece.

[0007] The specific steps are as follows:

[0008] S10. The mold carrying unit carries a plurality of molds from the feeding tray to the demolding unit;

[0009] S20. The demolding unit separates the upper mold and the lower mold of the mold, and transfers the upper mold carrying the dry piece to the taking unit;

[0010] S30. The taking unit takes out the dry piece from the upper mold and transfers it to the placing unit;

[0011] S40. The placing unit transfers and places the dry piece into the receiving tray.

[0012] The present application also provides a contact lens dry piece mold separation and taking system for implementing the above contact lens dry piece mold separation and taking method, which comprises a mold carrying unit for carrying the mold, a demolding unit for opening the upper mold and the lower mold of the mold, a taking unit for taking out and transferring the dry piece, and a placing unit for placing the dry piece.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] In actual use, the disc moving unit provides the to-be-molded lens sheet mold in batches quickly, improves the mold feeding efficiency; the mold stripping unit and the lens sheet taking unit are matched, the lens sheet mold is quickly stripped from the lower mold, and then the dry lens sheet is taken out in batches from the upper mold, the automatic batch quick picking assembly is realized, and the dry lens sheet taking efficiency is improved; and the dry lens sheet is efficiently placed into the disc by the placing unit, the redundant turnover work is avoided, and the dry lens sheet is quickly placed into the disc and collected; the dry lens sheet mold stripping and taking method and system have compact overall structure, reduce manual operation in the mold stripping and taking production stage, and improve the mold stripping and taking efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a top view schematic diagram of the present application;

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

[0017] Figure 3 is a structure schematic diagram of the mold moving unit of the present application;

[0018] Figure 4 is a three-dimensional structure schematic diagram of the mold stripping unit of the present application;

[0019] Figure 5 is a three-dimensional structure schematic diagram of the mold pushing mechanism in the mold stripping unit of the present application;

[0020] Figure 6 is Figure 5 is an enlarged schematic diagram of A in the present application;

[0021] Figure 7 is a structure schematic diagram of the lens sheet taking unit of the present application;

[0022] Figure 8 is a three-dimensional structure schematic diagram of the upper mold processing mechanism in the lens sheet taking unit of the present application;

[0023] Figure 9 is a structure schematic diagram of the placing unit of the present application;

[0024] Figure 10 is a schematic diagram of the placing unit of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0026] Reference Figures 1-10As shown, a contact lens dry piece mold splitting and taking method includes a mold carrying unit 100 for carrying molds, a demolding unit 200 for opening the upper mold and the lower mold of the mold, a dry piece taking unit 700 for taking out and transferring the dry piece, and a placing unit 800 for placing the dry piece into a tray;

[0027] The specific steps are as follows:

[0028] S10. The mold carrying unit 100 carries a plurality of molds from the feeding tray 911 to the demolding unit 200;

[0029] S20. The demolding unit 200 separates the upper mold and the lower mold of the mold, and transfers the upper mold carrying the dry piece to the dry piece taking unit 700;

[0030] S30. The dry piece taking unit 700 takes out the dry piece from the upper mold and transfers it to the placing unit 800;

[0031] S40. The placing unit 800 transfers and places the dry piece into the receiving tray 921.

[0032] In actual use, the tray carrying unit 100 provides a plurality of molds to be split and taken in a batch, improving the mold feeding efficiency; the demolding unit 200 and the dry piece taking unit 700 cooperate to quickly split the lower mold of the mold and take out the dry piece in a batch from the upper mold, realizing automatic batch splitting and taking, improving the dry piece taking efficiency; and the placing unit 800 efficiently places the dry piece into the tray, avoiding unnecessary turnover work and realizing rapid dry piece tray feeding; the contact lens dry piece mold splitting and taking method has a simple overall process, reduces manual operation in the mold splitting and taking production stage, and improves the mold splitting and taking efficiency.

[0033] In this embodiment, the feeding end of the mold carrying unit 100 is provided with a feeding bin 910 for providing the feeding tray 911 to the mold carrying unit 100, and the discharging end of the placing unit 800 is provided with a receiving bin 920 for providing the receiving tray 921 to the placing unit 800. Specifically, the feeding bin 910 and the receiving bin 920 can continuously provide the feeding tray 911 and the receiving tray 921, improving the efficiency of the equipment at the feeding and receiving ends, so that the equipment can further adapt to the automatic production process.

[0034] In this embodiment, the mold carrying unit 100 includes a mold carrying tool 110, a mold carrying displacement mechanism 120 for driving the mold carrying tool to displace, a mold turning frame 130, a mold turning mechanism 140 for driving the mold turning frame 130 to turn and lift, and a mold feeding sliding table 160 for feeding the turned mold to the demolding unit 200; in step S10, the mold carrying unit 100 further includes:

[0035] S11. The mold carrying displacement mechanism 120 drives the mold carrying tool 110 to carry and place the mold on the mold turning frame 130;

[0036] S12. The mold fixing frame 130 fixes the mold; the mold feeding slide table mechanism 160 moves to the mold fixing frame 130;

[0037] S13. The mold turning mechanism 140 drives the mold fixing frame 130 to turn the mold, and places the mold on the mold feeding slide table mechanism 160;

[0038] S14. The mold feeding slide table mechanism 160 moves the mold to the demolding unit 200.

[0039] Specifically, the mold fixing frame 130 adopts the structure of a suction cup frame to fix and place the mold to be demolded; the mold moving tool 110 can adopt a suction cup or a gripper to realize the picking and placing of the mold; the mold turning mechanism 140 includes a mold turning rotary driving device 141 and a mold turning lifting driving device 142 driving the mold turning rotary driving device 141 to lift; the mold moving displacement mechanism 120 drives the mold moving tool 110 to pick and carry a batch of molds, and then the mold turning lifting driving device 142 cooperates with the mold turning rotary driving device 141 to turn the mold, so that the upper mold of the mold faces downward and the outer convex surface of the lower mold faces upward; the mold feeding slide table mechanism 160 is used to quickly move the mold to the demolding unit 200, so as to perform the demolding and separating operation, improve the demolding and piece taking efficiency, and greatly improve the mold feeding efficiency.

[0040] In the embodiment, the demolding unit 200 includes a demolding material feeding mechanism 220 feeding the mold to be demolded, a mold falling frame 230 placing the mold to be demolded, a mold separating mechanism 210 extruding and separating the mold, and a mold pushing mechanism 240 pushing the demolded mold into the demolding conveying mechanism 260;

[0041] The demolding unit 200 includes the demolding material feeding mechanism 220, the mold falling frame 230, the mold separating mechanism 210, and the mold pushing mechanism 240;

[0042] In step S20, it also includes

[0043] S21. The demolding material feeding mechanism 220 feeds the mold to be demolded from the discharge end of the mold moving unit 100 to the mold falling frame 230;

[0044] S22. The mold separating mechanism 210 extrudes the lower mold of the mold to separate the upper mold and the lower mold of the mold, and pushes the upper mold carrying the dry piece from the mold falling frame 230 into the mold pushing mechanism 240;

[0045] S23. The mold pushing mechanism 240 pushes the upper mold carrying the dry piece into the demolding conveying mechanism 260, and the demolding conveying mechanism 260 conveys and transfers the upper mold carrying the dry piece.

[0046] Specifically, the demolding and material handling mechanism 220 is responsible for transporting the molds to be demolded, achieving continuous mold material supply, and placing the molds to be demolded in the mold dropping frame 230 to achieve batch and rapid mold loading; the demolding removal mechanism 210 squeezes the lower mold, separating the upper mold carrying the dry film from the lower mold, and sends the upper mold carrying the dry film from the mold dropping frame 230 into the mold pushing mechanism 240 to achieve batch and rapid separation of the lower mold and the upper mold; then the mold pushing mechanism 240 pushes the upper mold carrying the dry film into the demolding conveying mechanism 260, and transports the upper mold carrying the dry film to the film picking unit 700 for subsequent dry film picking operations, which is very practical and versatile; this demolding unit 200 uses the demolding removal mechanism in conjunction with the mold dropping frame to complete the rapid demolding of the upper mold carrying the dry film, and the mold pushing mechanism cooperates with the demolding conveying mechanism to quickly transport the upper mold carrying the dry film after it has separated from the lower mold; thus improving the efficiency of contact lens dry film production.

[0047] In this embodiment, the die-dropping frame 230 is provided with a plurality of die-dropping holes 231; the die-dropping holes 231 are used to drop the upper die carrying the dry sheet; specifically, the diameter of the die-dropping holes 231 is larger than that of the upper die and smaller than that of the lower die.

[0048] In step S21, the demolding material conveying mechanism 220 transports the mold to be demolded to the mold drop hole 231; in step S22, the upper mold carrying the dry sheet passes through the mold drop hole 231 and enters the mold pushing mechanism 240; specifically, the mold drop hole 231 is used to block and position the lower mold after being separated and demolded, so that the upper mold carrying the dry sheet can smoothly enter the mold pushing mechanism 240.

[0049] In this embodiment, the demolding material conveying mechanism 220 includes a demolding material conveying displacement driving device 221, a demolding material conveying lifting driving device 222 drivenly connected to the execution end of the demolding material conveying displacement driving device 221, and a demolding material conveying fixture 223 drivenly connected to the execution end of the demolding material conveying lifting driving device 222; the side of the demolding material conveying fixture 223 is also provided with a residual material push plate 224;

[0050] The demolding material conveying displacement drive device 221 drives the demolding material conveying lifting drive device 222 to move, thereby driving the demolding material conveying fixture 223 to transport the mold to be demolded from the discharge end of the mold moving unit 100 to the demolding hole 231 on the demolding frame 230; when the demolding material conveying fixture 223 enters the demolding frame 230, the demolding material conveying fixture 223 drives the demolding platen 224 to push the demolded lower mold above the demolding hole 231 away from the demolding hole 231.

[0051] Specifically, the demolding material handling fixture 223 can be a tooling that can pick up molds in batches, such as a suction cup or a gripper; the demolding material handling displacement drive device 221 drives the demolding material handling lifting drive device 222 to move the demolding material handling fixture 223 to transport and load the molds to be demolded; during the loading process, each time the demolding material handling fixture 223 enters the mold dropping frame 230, the residual material push plate 244 pushes the lower mold that has been demolded away from the mold dropping hole 231, in order to facilitate the placement of the molds to be demolded, and to remove the residual material after the previous batch of demolding is completed.

[0052] In this embodiment, the demolding mechanism 210 includes a lower mold lifting drive device 211 and a plurality of upper mold columns 212 driven and connected to the execution end of the lower mold lifting drive device 211; the lower mold lifting drive device 211 drives the upper mold columns 212 to press the lower mold until the lower mold separates from the upper mold carrying the dry sheet.

[0053] Specifically, the top mold column 212 is a column with a top ball at the end. The lifting drive device 211 drives the top mold column 212 to descend, so that the top ball at the end of the top mold column 212 contacts and squeezes the outer convex surface of the lower mold. During the demolding process, the top mold column 212 continues to descend, pushing the dry sheet and the upper mold out of the inner concave wall of the lower mold, thus completing the mold demolding.

[0054] In this embodiment, the die-pushing mechanism 240 includes a die-pushing drive device 241, a die-pushing fork plate 242 driven and connected to the execution end of the die-pushing drive device 241, and a die-receiving groove plate 243 for supporting the upper die. After demolding, the upper die carrying the dry sheet enters the die-receiving groove plate 243 from the die-dropping frame 230, and the die-pushing drive device 241 drives the die-pushing fork plate 242 to push the upper die into the demolding conveying mechanism 260. The die-receiving groove plate 243 is provided with a plurality of guide grooves 246 for guiding the movement of the upper die, and the end of the die-pushing fork plate 242 is provided with a plurality of die-pushing forks 245 that match the guide grooves 246.

[0055] Specifically, the mold receiving plate 243 is provided with multiple mold guide grooves 246. Each mold guide groove 246 is used to independently guide an upper mold carrying dry sheets. When the mold pushing drive device 241 drives the mold pushing fork plate 242, the mold pushing fork 245 at the end of the demolding fork plate 242 pushes the upper mold in the corresponding mold guide groove 246, realizing the unified action of multiple upper molds, completing the batch and high-efficiency pushing of the upper molds, and sending the demolded upper mold carrying dry sheets to the demolding conveyor mechanism 260 for conveying and transferring to the next station.

[0056] In this embodiment, an upper mold positioning mechanism 250 is also provided at the mold receiving plate 243, and an upper mold positioning hole 244 is opened on the mold receiving plate 243. The execution end of the upper mold positioning mechanism 250 passes through the upper mold positioning hole 244 to position the upper mold carrying the dry sheet after demolding, which enters the mold receiving plate 243. The upper mold positioning mechanism 250 includes an upper mold positioning drive device 251 and an upper mold positioning column 252 driven and connected to the execution end of the upper mold positioning drive device 251. Before the upper mold carrying the dry sheet enters the mold receiving plate 243, the upper mold positioning drive device 251 drives the upper mold positioning column 252 to pass through the upper mold positioning hole 244. After demolding, the upper mold carrying the dry sheet falls on the end of the upper mold positioning column 252 and is positioned. When the push mold drive device 241 drives the push mold fork plate 242 to push the upper mold, the upper mold positioning drive device 251 drives the upper mold positioning column 252 to retract. Specifically, the upper mold positioning mechanism 250 is used to position the upper mold carrying the dry sheet that falls into the mold receiving plate 243 during the demolding process, so as to prevent it from shifting during the falling or entering process.

[0057] In this embodiment, the wafer picking unit 700 includes a wafer picking carrier plate 710 for the upper mold, an upper mold processing mechanism 720, an upper mold removal mechanism 740, and a dry wafer transfer mechanism 730.

[0058] Step S30 also includes:

[0059] S31. The upper mold carrying the dry film is placed at the film-receiving plate 710;

[0060] S32. The upper mold release mechanism 740 pushes the upper mold against the upper mold processing mechanism 720, and the upper mold release mechanism 740 continuously squeezes the upper mold to separate the upper mold from the dry sheet;

[0061] S33. The dry sheet transfer mechanism 730 picks up the dry sheet after demolding from the upper mold and transports the dry sheet to the placement unit 800;

[0062] S34. The upper mold processing mechanism 720 pushes the demolded upper mold away from the sheet removal carrier plate 710.

[0063] In practical use, the sheet-removing carrier plate 710 is used to place the upper mold containing the dry sheet that has been separated from the lower mold. The upper mold removal mechanism 740 pushes the upper mold to abut against the upper mold processing mechanism 720 and continuously pushes and squeezes the upper mold, causing it to deform to a certain extent so as to separate it from the dry sheet applied on it. The dry sheet transfer mechanism 730 picks up the dry sheet that has been separated from the upper mold and transfers it out of the sheet-removing carrier plate 710. The upper mold processing mechanism 720 pushes out the upper mold residue that has been separated from the dry sheet from the sheet-removing carrier plate 710, making room for the next sheet removal operation.

[0064] This lens extraction unit 700 uses a mold removal mechanism in conjunction with a mold processing mechanism to position and deform the upper mold together, completing the separation of the upper mold and the dry lens, and realizing batch demolding of dry lenses; and through the dry lens transfer mechanism and the upper mold processing mechanism, the separated dry lenses and the upper mold are quickly transported out of the lens extraction carrier plate 710, realizing rapid lens extraction and cleaning of mold residue; realizing automated dry lens extraction operation and improving the overall processing efficiency of contact lens dry lenses.

[0065] In this embodiment, the plate taking plate 710 is provided with a plurality of upper mold slots 711 for placing the upper mold; the upper mold removal mechanism 740 includes an upper mold driving device 741 and an extrusion push plate 742 that is driven and connected to the execution end of the upper mold driving device 741.

[0066] The top die drive device 741 drives the extrusion pusher 742 to move the upper die carrying the dry sheet in the upper die groove 711, and pushes the upper die carrying the dry sheet to the upper die processing mechanism 720 and continuously applies pressure until the upper die separates from the dry sheet.

[0067] Specifically, the upper surface of the wafer carrier plate 710 is provided with multiple upper mold grooves 711 for guiding the upper mold, so that the upper mold release mechanism 740 can push the upper mold to move, avoid the upper mold from shifting during movement, and improve the demolding and separation efficiency between the upper mold and the dry wafer.

[0068] In this embodiment, the edge of the extrusion push plate 742 is provided with extrusion concave teeth 743; specifically, the extrusion concave teeth 743 with a certain concave arc can prevent the upper mold from shifting during the pushing process.

[0069] In this embodiment, the dry sheet transfer mechanism 730 includes a transfer displacement driving device 731, a transfer rotation driving device 732, and a transfer fixture 733. The transfer displacement driving device 731 drives the transfer rotation driving device 732, which in turn drives the transfer fixture 733 to the sheet picking plate 710 to pick up the demolded dry sheet and transfer it out of the sheet picking plate 710. During the picking and transfer process, the transfer rotation driving device 732 drives the transfer fixture 733 to rotate so that the transfer fixture 733 can accurately pick up and place the sheet.

[0070] Specifically, the transfer displacement drive device 731 is an XZ axis dual-axis linear motor used to drive the transfer rotary drive device 732 and the transfer fixture 733 to move in a dual-axis manner. The transfer fixture 733 is a tool such as a suction cup or gripper that can pick up the dry sheet. The transfer rotary drive device 732 can rotate the transfer fixture 733 as needed. During the picking, transfer and placement process, the transfer fixture 733 is rotated as needed to improve the adaptability of the transfer action to various equipment layouts.

[0071] In this embodiment, the upper mold processing mechanism 720 includes an upper mold processing drive device 721 and an upper mold connecting plate 722 driven and connected to the execution end of the upper mold processing drive device 721; the upper mold connecting plate 722 is provided with a positioning tooth plate 723 at its end; the upper mold release mechanism 740 pushes the upper mold carrying the dry sheet into the positioning tooth plate 723 and continues to squeeze until the upper mold separates from the dry sheet; the upper mold processing drive device 721 drives the upper mold connecting plate 722 to move, thereby driving the positioning tooth plate 723 to push the upper mold after it has separated from the dry sheet to move, so that the upper mold leaves the sheet taking plate 710.

[0072] In this embodiment, the upper mold receiving hopper 770 is also provided at the sheet taking plate 710. The upper mold processing driving device 721 drives the upper mold connecting plate 722 to drive the positioning tooth plate 723 to push the upper mold after the dry sheet is separated into the receiving hopper 770.

[0073] In this embodiment, a shaping mechanism 750 and a shaping lifting mechanism 760 for driving the shaping mechanism 750 to rise and fall are also included. When the upper mold carrying the dry sheet is pushed and pressed against the upper mold processing mechanism 720, the shaping lifting mechanism 760 drives the shaping mechanism 750 to rise and fall, so that the execution end of the shaping mechanism 750 passes through the sheet-taking carrier plate 710 and extends into the concave surface of the upper mold.

[0074] Specifically, the execution end of the shaping mechanism 750 extends into the concave surface of the upper mold to provide a certain degree of support to the concave surface of the upper mold, thereby preventing the upper mold from being severely deformed during the extrusion demolding process of the upper mold demolding mechanism 740 and during the sheet removal process of the dry sheet transfer mechanism 730 after demolding. This reduces the damage or detachment of dry sheets caused by severe deformation of the upper mold, improves the success rate of sheet removal, and reduces waste sheets.

[0075] In this embodiment, the take-up plate 710 has a shaping hole 712 for the shaping mechanism 750 to pass through. The shaping mechanism 750 includes a shaping rod 752 and a rotary drive device 751 for driving the shaping rod 752 to rotate. The output end of the rotary drive device 751 is connected to several shaping rods 752, and the rotary drive device 751 drives the shaping rods 752 extending into the concave surface of the upper mold to rotate. Specifically, the shaping rods 752 extend into the concave surface of the upper mold to provide a certain degree of support to the concave surface of the upper mold, avoiding excessive compression, and the rotatable shaping rods 752 can be rotated as needed for easy demolding.

[0076] In this embodiment, a lifting guide rod 761 is also included. The execution end of the shaping lifting mechanism 760 is connected to and drives the shaping mechanism 750 to slide up and down on the lifting guide rod 761, thereby driving the shaping rod 752 of the shaping mechanism 750 to extend into the concave surface of the upper mold.

[0077] In this embodiment, the placement unit 800 includes a flipping assembly 810, a tray rack 840 for placing the receiving tray 921, a dry sheet flipping drive device 820 for driving the flipping assembly 810 to flip, and a tooling drive mechanism 830 for driving the dry sheet flipping drive device 820 to move.

[0078] Step S40 also includes:

[0079] S41. The dry sheet taken out from the mold is conveyed to the flipping assembly 810, and the flipping assembly 810 fixes the dry sheet;

[0080] S42. The dry film flipping drive device 820 drives the flipping assembly 810 to flip so that the dry film fixed on the flipping assembly 810 is flipped and reversed;

[0081] S43. The tooling drive mechanism 830 drives the dry film flipping drive device 820, which in turn moves the flipping assembly 810 to the plate rack 840.

[0082] S44. The flipping assembly 810 places the dry sheets into the receiving tray 921.

[0083] Specifically, the dry film flipping drive device 820 can be a rotary cylinder. The dry film flipping drive device 820 drives the flipping assembly 810 to flip and change the orientation of the fixed dry films, facilitating subsequent tray placement. The placement unit 800 uses the flipping assembly 810 to load and fix multiple dry films, increasing the number of trays placed at one time. The dry film flipping drive device realizes a secondary orientation change of the incoming dry films, adapting to various tray placement requirements. The tooling drive mechanism 830 drives the dry film flipping drive device 820 and the flipping assembly 810 to perform fast and stable operation, realizing automated and rapid batch placement of dry contact lenses, improving the overall production efficiency of contact lenses.

[0084] In this embodiment, the flipping assembly 810 includes a tooling frame 811 and a plurality of pickup assemblies 812 mounted on the tooling frame 811; the pickup assembly 812 fixes the dry film being transferred.

[0085] Specifically, the pickup component 812 can use a nozzle or gripper to pick up and place dry tablets; multiple pickup components 812 are installed on the fixture 811 to realize the synchronous tray placement of multiple dry tablets, thereby improving the efficiency of dry tablet tray placement.

[0086] In this embodiment, the tooling drive mechanism 830 includes a tooling displacement drive device 831 and a tooling lifting drive device 832 that is driven and connected to the execution end of the tooling displacement drive device 831. The tooling displacement drive device 831 drives the tooling lifting drive device 832 to move the flipping assembly 810 to the receiving tray 921 along with the dry sheet flipping drive device 820. Specifically, the tooling displacement drive device 831 can be a linear motor, and the tooling lifting drive device 832 can be a cylinder.

[0087] In this embodiment, an electrostatic dust removal component 880 is also provided at the flipping component 810; when the tooling drive mechanism 830 drives the dry sheet flipping drive device 820 to move the flipping component 810 past the electrostatic dust removal component 880, the electrostatic dust removal component 880 performs dust removal on the dry sheet, thereby improving the quality of the product.

[0088] In this embodiment, a transfer drive mechanism 850 is also provided at the tray rack 840, and a transfer fixture 860 is driven and connected to the execution end of the transfer drive mechanism 850; the transfer drive mechanism 850 drives the transfer fixture 860 to move the receiving tray 921 carrying dry sheets out of the tray rack 840.

[0089] In this embodiment, the transfer drive mechanism 850 includes a transfer displacement drive device 851, a transfer lifting drive device 852 driven and connected to the execution end of the transfer displacement drive device 851, and a tooling steering drive device 853 driven and connected to the execution end of the transfer lifting drive device 852. The transfer displacement drive device 851 drives the transfer lifting drive device 852 to move along with the tooling steering drive device 853, so that the transfer tooling 860 picks up the receiving tray 921 carrying the dry sheets at the tray rack 840.

[0090] Specifically, the transfer drive device 851 can be a linear motor, the transfer lifting drive device 852 can be a cylinder, and the transfer fixture 860 can be a gripper or a pneumatic plate, etc., which can pick up and place the receiving tray 921.

[0091] In this embodiment, the actuator of the tooling steering drive device 853 drives two transfer tooling 860s; when one transfer tooling 860 picks up the receiving tray 921 carrying dry sheets at the tray rack 840, the other transfer tooling 860 picks up the empty receiving tray 921 at the receiving tray; when the tooling steering drive device 853 rotates, it causes the transfer tooling 860 picking up the empty receiving tray 921 to rotate to the tray rack 840; at the same time, it causes the transfer tooling 860 picking up the receiving tray 921 carrying dry sheets to move to the receiving tray.

[0092] In this embodiment, two transfer tray fixtures are preferred to achieve synchronous clamping and placement of the two fixtures. The fixture steering drive device 853 rotates and reverses the positions of the empty and the receiving tray 921 carrying dry sheets, so as to achieve rapid loading and unloading of the receiving tray 921 in a single action.

[0093] In this embodiment, it also includes a mold trimming unit 300 located between the demolding unit 200 and the sheet taking unit 700 for trimming the burrs on the dry sheet, a softening unit 400 for softening the dry sheet, a pre-separation unit 500 for pre-separating the dry sheet from the upper mold, and a sheet taking and transferring unit 600 for transferring the upper mold containing the dry sheet between the pre-separation unit 500 and the sheet taking unit 700.

[0094] Between steps S10 and S20, the following is also included:

[0095] S101. The upper mold carrying the dry sheet enters the mold repair unit 300 from the demolding unit 200;

[0096] S102. The mold trimming unit 300 trims the edges of the dry sheet; the trimmed dry sheet and the upper mold enter the softening unit 400 at the mold trimming unit 300.

[0097] S103. The softening unit 400 softens the dry sheet; the softened dry sheet and the upper mold are moved to the pre-separation unit 500;

[0098] S104. The pre-separation unit 500 performs vacuum breaking treatment on the dry sheet attached to the upper mold to pre-separate the dry sheet from the upper mold;

[0099] S105. The pre-separated dry film and upper mold are moved to the film picking and transfer unit 600, and the film picking and transfer unit 600 transfers the upper mold carrying the dry film to the film picking unit 700.

[0100] Specifically, the mold repair unit 300 removes scraps from the dry contact lenses, improving the quality of the finished product and avoiding burrs and defects; the softening unit 400 humidifies and heats the dry lenses to facilitate demolding; the pre-mold separation unit 500 breaks the vacuum state that tightly adheres between the dry lenses and the upper mold, facilitating subsequent demolding and lens removal; the lens removal and transfer unit 600, completed by a heating table and a transfer robotic arm, temporarily places the vacuum-broken dry lenses on the heating table, further heats and softens the dry lenses and the lower mold, and then transfers the upper molds to the lens removal unit 700 in batches for automated and continuous feeding.

[0101] Specifically, the mold repair unit 300, softening unit 400, pre-mold separation unit 500, and wafer transfer unit 600 can all be implemented by the technical features and solutions described in the prior art, so this embodiment will not elaborate further.

[0102] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the scope defined by the spirit of the invention.

Claims

1. A method for separating and extracting dry contact lenses, characterized in that, It includes a mold-moving unit (100), a demolding unit (200), a sheet-retrieving unit (700), and a placement unit (800); the specific steps are as follows: S10. The mold transfer unit (100) transports multiple molds in batches from the loading tray (911) to the demolding unit (200); S20. The demolding unit (200) separates the upper mold from the lower mold and moves the upper mold containing the dry sheet to the sheet removal unit (700); S30. The sheet taking unit (700) takes the dry sheet from the upper mold and transfers it to the placement unit (800); S40. The placement unit (800) transfers the dry film and places it into the receiving tray (921); The wafer taking unit (700) includes a wafer taking carrier plate (710) for the upper mold, an upper mold processing mechanism (720), an upper mold removal mechanism (740), and a dry wafer transfer mechanism (730). Step S30 also includes: S31. The upper mold containing the dry sheet is placed at the sheet-removing carrier plate (710); S32. The upper mold release mechanism (740) pushes the upper mold against the upper mold processing mechanism (720), and the upper mold release mechanism (740) continuously squeezes the upper mold to separate the upper mold from the dry sheet; S33. The dry sheet transfer mechanism (730) picks up the dry sheet after demolding from the upper mold and transports the dry sheet to the placement unit (800); S34. The upper mold processing mechanism (720) pushes the demolded upper mold away from the sheet-removing carrier plate (710). The plate-receiving carrier (710) is provided with a plurality of upper mold slots (711) for placing the upper mold; the upper mold removal mechanism (740) includes a top upper mold drive device (741) and an extrusion push plate (742) driven and connected to the execution end of the top upper mold drive device (741); the edge of the extrusion push plate (742) is provided with extrusion teeth (743); when separating the upper mold from the dry sheet, the top upper mold drive device (741) drives the extrusion push plate (742) to push the upper mold carrying the dry sheet to move in the upper mold slot (711), and pushes the upper mold carrying the dry sheet to the upper mold processing mechanism (720) and continuously applies pressure until the upper mold and the dry sheet are separated; The upper mold processing mechanism (720) includes an upper mold processing drive device (721) and an upper mold connecting plate (722) that is driven to the execution end of the upper mold processing drive device (721); the upper mold connecting plate (722) is provided with a positioning tooth plate (723) at its end. The upper mold release mechanism (740) pushes the upper mold carrying the dry film into the positioning tooth plate (723) and continues to squeeze until the upper mold separates from the dry film; the upper mold processing drive device (721) drives the upper mold connecting plate (722) to drive the positioning tooth plate (723) to move the upper mold after it is separated from the dry film, so that the upper mold leaves the film taking plate (710).

2. The method for separating and extracting dry contact lenses according to claim 1, characterized in that, The feeding end of the mold moving unit (100) is provided with a feeding hopper (910) that provides a feeding tray (911) to the mold moving unit (100), and the discharging end of the placement unit (800) is provided with a receiving hopper (920) that provides a receiving tray (921) to the placement unit (800).

3. The method for separating and extracting dry contact lenses according to claim 1, characterized in that, The mold moving unit (100) includes a mold moving fixture (110), a mold moving displacement mechanism (120), a mold flipping frame (130), a mold flipping mechanism (140), and a mold feeding slide mechanism (160). Step S10 also includes: S11. The mold moving displacement mechanism (120) drives the mold moving fixture (110) to move the mold onto the mold flipping frame (130); S12. The mold-flipping frame (130) fixes the mold; the mold-feeding slide mechanism (160) moves to the mold-flipping frame (130); S13. The mold flipping mechanism (140) drives the mold flipping frame (130) to flip the mold and place the mold on the mold feeding slide mechanism (160); S14. The mold feeding slide mechanism (160) transfers the mold to the demolding unit (200).

4. The method for separating and extracting dry contact lenses according to claim 1, characterized in that, The demolding unit (200) includes a demolding material conveying mechanism (220), a demolding frame (230), a demolding removal mechanism (210), and a mold pushing mechanism (240). In step S20, it also includes S21. The demolding and material conveying mechanism (220) transports the mold from the discharge end of the mold moving unit (100) to the mold dropping frame (230); S22. Demolding mechanism (210) squeezes the lower die of the die to separate the upper die from the lower die, and pushes the upper die carrying the dry sheet from the die dropper (230) into the die pusher mechanism (240); S23. The die-pushing mechanism (240) pushes the upper die carrying the dry film into the die-demolding conveying mechanism (260), and the die-demolding conveying mechanism (260) transports and transfers the upper die carrying the dry film.

5. The method for separating and extracting dry contact lenses according to claim 4, characterized in that, The die-dropping frame (230) has a plurality of die-dropping holes (231), which are used to drop the upper die containing the dry sheet. In step S21, the demolding material conveying mechanism (220) transports the mold to the demolding hole (231); In step S22, the upper mold carrying the dry sheet passes through the die drop hole (231) and enters the die ejection mechanism (240).

6. The method for separating and extracting dry contact lenses according to claim 5, characterized in that, The demolding material conveying mechanism (220) includes a demolding material conveying displacement drive device (221), a demolding material conveying lifting drive device (222) driven by the execution end of the demolding material conveying displacement drive device (221), and a demolding material conveying fixture (223) driven by the execution end of the demolding material conveying lifting drive device (222); the side of the demolding material conveying fixture (223) is also provided with a residual material push plate (224). The demolding material conveying displacement drive device (221) drives the demolding material conveying lifting drive device (222) to move, thereby driving the demolding material conveying fixture (223) to transport the mold from the discharge end of the mold moving unit (100) to the mold dropping hole (231) on the mold dropping frame (230); when the demolding material conveying fixture (223) enters the mold dropping frame (230), the demolding material conveying fixture (223) drives the residual material push plate (224) to push the demolded lower mold above the mold dropping hole (231) away from the mold dropping hole (231). The demolding mechanism (210) includes a lower mold lifting drive device (211) and a plurality of upper mold columns (212) driven and connected to the execution end of the lower mold lifting drive device (211); the lower mold lifting drive device (211) drives the upper mold columns (212) to press the lower mold until the lower mold separates from the upper mold carrying the dry sheet.

7. The method for separating and extracting dry contact lenses according to claim 4, characterized in that, The ejector mechanism (240) includes an ejector drive device (241), an ejector fork plate (242) drivenly connected to the ejector drive device (241), and a mold receiving groove plate (243) for supporting the upper mold. After demolding, the upper mold carrying the dry sheet enters the mold receiving groove plate (243) from the demolding frame (230), and the mold pushing drive device (241) drives the mold pushing fork plate (242) to push the upper mold into the demolding conveying mechanism (260); The mold receiving plate (243) is provided with a plurality of mold guide grooves (246) for guiding the upper mold to move, and the end of the push mold fork plate (242) is provided with a plurality of push mold forks (245) that match the mold guide grooves (246).

8. The method for separating and extracting dry contact lenses according to claim 7, characterized in that, The mold receiving groove plate (243) is also provided with an upper mold positioning mechanism (250), and an upper mold positioning hole (244) is opened on the mold receiving groove plate (243). The actuator of the upper mold positioning mechanism (250) passes through the upper mold positioning hole (244) to position the upper mold carrying the dry sheet after demolding, which enters the mold receiving groove plate (243); The upper mold positioning mechanism (250) includes an upper mold positioning drive device (251) and an upper mold positioning column (252) that is driven and connected to the execution end of the upper mold positioning drive device (251). Before the upper mold carrying the dry sheet enters the mold receiving slot plate (243), the upper mold positioning drive device (251) drives the upper mold positioning pin (252) to pass through the upper mold positioning hole (244). After demolding, the upper mold carrying the dry sheet falls at the end of the upper mold positioning pin (252) and is positioned. When the upper mold push drive device (241) drives the push mold fork plate (242) to push the upper mold, the upper mold positioning drive device (251) drives the upper mold positioning pin (252) to retract.

9. The method for separating and extracting dry contact lenses according to claim 1, characterized in that, It also includes a shaping mechanism (750) and a shaping lifting mechanism (760) for driving the shaping mechanism (750) to rise and fall. When the upper mold carrying the dry sheet is pushed and pressed against the upper mold processing mechanism (720), the shaping lifting mechanism (760) drives the shaping mechanism (750) to rise and fall, so that the execution end of the shaping mechanism (750) passes through the sheet-taking carrier plate (710) and extends into the inner concave surface of the upper mold; the sheet-taking carrier plate (710) is provided with a shaping hole (712) to facilitate the passage of the shaping mechanism (750). The shaping mechanism (750) includes a shaping rod (752) and a rotary drive device (751) for driving the shaping rod (752) to rotate; the output end of the rotary drive device (751) is connected to a plurality of shaping rods (752), and the rotary drive device (751) drives the shaping rods (752) that extend into the concave surface of the upper mold to rotate. It also includes a lifting guide rod (761), the execution end of the shaping lifting mechanism (760) is connected to and drives the shaping mechanism (750) to slide up and down on the lifting guide rod (761), thereby driving the shaping rod (752) of the shaping mechanism (750) to extend into the concave surface of the upper mold.

10. The method for separating and extracting dry contact lenses according to claim 1, characterized in that, The placement unit (800) includes a flipping assembly (810), a tray rack (840), a dry film flipping drive device (820), and a tooling drive mechanism (830). Step S40 also includes: S41. The dry sheet taken out from the mold is conveyed to the flipping assembly (810), and the flipping assembly (810) fixes the dry sheet; S42. The dry film flipping drive device (820) drives the flipping assembly (810) to flip so that the dry film fixed on the flipping assembly (810) is flipped and reversed; S43. The tooling drive mechanism (830) drives the dry film flipping drive device (820) to move the flipping assembly (810) to the tray rack (840). S44. The flipping assembly (810) places the dry sheets into the receiving tray (921).

11. The method for separating and extracting dry contact lenses according to claim 10, characterized in that, The flipping assembly (810) includes a fixture (811) and a plurality of pick-up assemblies (812) mounted on the fixture (811); the pick-up assemblies (812) are used to pick up dry films; The tooling drive mechanism (830) includes a tooling displacement drive device (831) and a tooling lifting drive device (832) that is driven and connected to the execution end of the tooling displacement drive device (831); the tooling displacement drive device (831) drives the tooling lifting drive device (832) to move the flipping assembly (810) to the receiving tray (921) along with the dry sheet flipping drive device (820); An electrostatic dust removal component (880) is also provided at the flipping assembly (810); when the tooling drive mechanism (830) drives the dry film flipping drive device (820) to move the flipping assembly (810) past the electrostatic dust removal component (880), the electrostatic dust removal component (880) performs dust removal operation on the dry film.

12. The method for separating and extracting dry contact lenses according to claim 10, characterized in that, The plate rack (840) is also provided with a plate transfer drive mechanism (850), and a plate transfer fixture (860) is driven to the execution end of the plate transfer drive mechanism (850). The transfer drive mechanism (850) drives the transfer fixture (860) to move the receiving tray (921) containing dry sheets out of the tray rack (840) from the tray rack (840). The transfer drive mechanism (850) includes a transfer displacement drive device (851), a transfer lifting drive device (852) driven and connected to the execution end of the transfer displacement drive device (851), and a tooling steering drive device (853) driven and connected to the execution end of the transfer lifting drive device (852). The transfer displacement drive device (851) drives the transfer lifting drive device (852) to move along with the tooling steering drive device (853) so that the transfer tooling (860) picks up the receiving tray (921) containing dry sheets at the tray rack (840).

13. The method for separating and removing dry contact lenses according to claim 12, wherein the execution end of the tooling steering drive device (853) is driven to connect two transfer tooling (860); when one transfer tooling (860) picks up the receiving tray (921) carrying the dry lenses at the tray rack (840), the other transfer tooling (860) picks up the empty receiving tray (921) at the receiving tray. When the tooling steering drive device (853) rotates, it causes the transfer tool (860) that picks up the empty receiving tray (921) to rotate to the tray rack (840); at the same time, it causes the transfer tool (860) that picks up the receiving tray (921) containing dry sheets to move to the receiving position.

14. The method for separating and extracting dry contact lenses according to claim 1, characterized in that, It also includes a mold repair unit (300), a softening unit (400), a pre-mold separation unit (500), and a sheet transfer unit (600) located between the demolding unit (200) and the sheet taking unit (700) processes. Between steps S10 and S20, the following is also included: S101. The upper mold carrying the dry sheet enters the mold repair unit (300) from the demolding unit (200); S102. The mold repair unit (300) trims the dry sheet; the trimmed dry sheet and the upper mold enter the softening unit (400) from the mold repair unit (300). S103. The softening unit (400) softens the dry sheet; the softened dry sheet and the upper mold are moved to the pre-separation unit (500); S104. The pre-separation unit (500) performs vacuum breaking treatment on the dry sheet attached to the upper mold to pre-separate the dry sheet from the upper mold; S105. The pre-separated dry film and upper mold are moved to the film taking and transferring unit (600), and the upper mold carrying the dry film is transferred to the film taking unit (700) by the film taking and transferring unit (600).

15. A dry contact lens separation and extraction system, characterized in that, The method for separating and removing dry contact lenses according to any one of claims 1-14 includes a mold-moving unit (100) for transporting the mold, a demolding unit (200) for opening the upper and lower molds, a lens-removing unit (700) for removing and transferring the dry lenses, and a placement unit (800) for collecting and placing the dry lenses on a tray.

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