Contact lens filling and mold closing method and system

Abstract

The invention relates to the technical field of contact lens automatic production, in particular to a contact lens filling and mold closing method and system.The contact lens filling and mold closing method comprises the following specific steps that S10, a feeding unit mold is carried to a jig assembly; s20, the turnover unit drives the jig assembly to enter a filling liquid injection area; s30, the mold opening and closing unit opens the mold, the liquid injection unit is filled with injection liquid, and the mold opening and closing unit performs mold closing on the mold; s40, the turnover unit drives the jig assembly to enter a discharging area, and the visual inspection assembly conducts quality visual inspection; s50, the discharging unit carries the mold to an empty tray, and material receiving and discharging are conducted; s60, the turnover unit drives the jig assembly to enter a feeding area for feeding, and operation is cycled in this way; the mold opening, filling and mold closing actions are integrated, the overall structure is compact, the function integration degree is high, liquid injection and filling are synchronously conducted in multiple filling and liquid injection areas in batches, the overall operation period of the mold is shortened, and the liquid injection and filling efficiency is improved; the automatic feeding and discharging unit is matched, so that the manual operation risk is reduced, and the overall production and processing quality and processing efficiency of contact lenses are improved.

Description

Technical Field

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

[0002] Contact lenses are becoming increasingly popular because of their role in vision correction and beautification;

[0003] At present, compression molding is a new contact lens molding process. In the process of preparing contact lenses by compression molding, liquid materials such as high molecular polymers are mostly used; injection is an important part of the process of preparing contact lenses by compression molding, and the injection process has also been partially automated. However, in conventional automated equipment, the specific actions of the raw materials are also separated by injection and suction. The overall injection operation is complicated and prone to failure. The injection precision is poor, and the upper and lower molds are not concentric and level during the closing process, resulting in thick and thin edges of the lens, affecting the quality of the finished contact lenses; the pressing process is not synchronized and stable, and the bubbles in the mold are not completely eliminated, which can easily lead to a high bubble rate in the lens, which will also affect the qualified rate of the lens. Summary of the invention

[0004] The object of the present invention is to provide a contact lens filling and mold closing method and system with automatic mold opening and closing, multi-cavity synchronization, high functional integration and stable operation.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a contact lens filling and mold clamping method, comprising a turnover unit for a turnover fixture assembly, wherein the turnover unit is provided with a loading area, a filling and liquid injection area, and a unloading area, and the specific steps are as follows:

[0007] S10. The loading unit moves the mold to be filled to the fixture assembly located in the loading area;

[0008] S20. The turnover unit drives the fixture assembly and the mold to be filled into the filling and liquid injection area;

[0009] S30. In the filling and liquid injection area, the mold opening and closing unit opens the upper mold and the lower mold of the mold, and after the liquid injection unit fills the liquid injection in the lower mold, the mold opening and closing unit closes the upper mold and the lower mold of the mold;

[0010] S40. The turnover unit drives the fixture assembly and the mold after filling and injection into the unloading area, and the visual inspection component inspects the quality of the mold after filling and injection, and waits for unloading;

[0011] S50. The unloading unit moves the mold after quality inspection to the empty tray to complete the material collection and unloading;

[0012] S60. The turnover unit drives the unloaded fixture assembly to enter the loading area again, and the loading unit loads the material again, thus cyclically operating.

[0013] Furthermore, the loading unit includes a tray transport trolley, a set of tray moving modules arranged in parallel and a tray temporary storage table; the front end of each tray moving module is provided with a tray moving gripper and a tray moving module for driving the tray moving gripper to move; the ends of the two tray moving modules are provided with a material moving manipulator;

[0014] The tray moving module drives the tray moving gripper to move the tray with the mold on the tray transport trolley to the tray moving module, and the tray moving module moves the tray with the mold to the side of the loading area; the material moving robot moves the mold on the tray to the fixture assembly located in the loading area; the material moving robot moves the empty tray after it is half empty to the tray temporary storage table for caching.

[0015] Further, in step S30:

[0016] S31. The lower mold positioning mechanism of the mold opening and closing unit fixes the lower mold of the mold from below the mold to be filled;

[0017] S32. After the upper mold positioning mechanism of the mold opening and closing unit fixes the upper mold of the mold from above the mold to be filled, the mold opening mechanism of the mold opening and closing unit opens the upper mold of the mold, and the upper mold positioning mechanism moves the upper mold away from the lower mold;

[0018] S33. The injection unit is filled with liquid into the lower mold;

[0019] S34. The upper mold positioning mechanism moves the upper mold back to the lower mold and places the upper mold in the lower mold;

[0020] S35. The upper mold positioning mechanism applies pressure to the upper mold to press the upper mold and the lower mold together;

[0021] Further, in step S33:

[0022] S331. The injection unit is in the pumping action, the injection valve group of the injection unit is in the pumping state, and the injection unit injector assembly extracts the raw material from the constant temperature bin for temporary storage;

[0023] S332. When the injection unit is in the injection action, the injection valve group of the injection unit is switched to the injection state, and the needle group module of the injection unit drives the injection needle group to the top of the fixture assembly;

[0024] S333. The injector assembly pushes the liquid into the injection needle assembly and fills it into the lower mold, completing the injection and filling.

[0025] Further, the lower mold positioning mechanism includes a lower mold positioning nozzle arranged below the fixture assembly and a lower mold positioning drive for pushing the lower mold positioning nozzle up and down; the mold opening mechanism includes at least one mold opening drive, a fork connecting plate installed at the execution end of the mold opening drive, and a mold opening fork installed on the fork connecting plate for inserting and separating the upper mold and the lower mold of the contact lens;

[0026] The upper mold positioning mechanism includes a nozzle assembly and an upper mold mold group that pushes the nozzle assembly to rise and fall; the upper mold mold group includes an upper mold lifting drive fixed on the upper mold bracket, and the execution end of the upper mold lifting drive is equipped with an upper mold sliding frame, and the upper mold sliding frame is slidably installed on the upper mold bracket, and a nozzle mounting frame for installing the nozzle assembly is provided at the bottom of the upper mold sliding plate; the nozzle assembly includes a plurality of nozzle slide bars slidably installed on the nozzle mounting frame, and an upper mold nozzle is installed at the end of each nozzle slide bar, and a mold counterweight is installed on the rod body of each nozzle slide bar; the upper mold nozzle is located above the fixture assembly.

[0027] Furthermore, the syringe assembly and the constant temperature chamber are both installed on the injection main frame; the injection needle group is connected to the injection valve group using an injection hose; the injection needle group is installed at the execution end of the needle group module, and the needle group module is installed on the side of the injection main frame using an injection side frame.

[0028] Furthermore, the visual inspection unit includes a detection camera, a visual inspection driver for driving the detection camera to move horizontally, a fill light board, a light board driver for driving the fill light board to move horizontally, and a plurality of top mold assemblies for lifting molds; the visual inspection driver is located above the unloading area of ​​the turnover unit, driving the detection camera to scan the fixture assembly; the light board driver is located below the unloading area, driving the fill light board to move to below the fixture assembly;

[0029] The top mold assembly includes a top mold rubber head installed below the unloading area of ​​the turnover unit, and a top mold cylinder driving the top mold rubber head to rise and fall.

[0030] Further, the jig assembly includes a jig plate installed on the turnover unit; the jig plate is provided with a first row of mold grooves and a second row of mold grooves arranged in parallel; the side surfaces of the first mold groove and the side surfaces of the second mold groove are respectively provided with mold opening mechanisms; the lower mold positioning mechanism is located below the jig plate, and the upper mold positioning mechanism is located above the jig plate;

[0031] The turnover unit includes a turnover ring rail, a plurality of turnover plates slidably arranged on the turnover ring rail, a turnover drive mechanism for driving the turnover plates to rotate around the turnover ring rail, the jig plate is arranged on the turnover plate, and the turnover drive mechanism is connected by chain drive or belt drive and drives the turnover plates to slide on the turnover slide rail; there are two filling and liquid injection areas, the two filling and liquid injection areas are located on the sides of the turnover ring rail, and the two filling and liquid injection areas are located between the processes of the loading area and the unloading area.

[0032] The present invention also provides a contact lens filling and clamping system for implementing the contact lens filling and clamping method described above, comprising a turnover unit for rotating the jig assembly, and a mold opening and closing unit, a liquid injection unit, a loading unit for providing a mold to be filled, a unloading unit for collecting the filled mold, and a visual inspection unit distributed on the side of the turnover unit;

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] In actual use, the turnover unit is a rectangular loop-type circulation track, and the fixture assembly is used to carry the contact lens mold. The turnover unit is divided into a loading area, multiple filling and liquid injection areas, and a unloading area according to functional areas; the loading area is adjacent to the unloading area, and the two filling and liquid injection areas are adjacent, so the rectangular layout and equipment space are reasonably utilized to reduce the equipment volume; each filling and liquid injection area is provided with two groups of mold opening and closing units and liquid injection units; during the filling and mold closing operation, the turnover unit drives multiple fixture assemblies to enter the filling and liquid injection area at the same time, and the two filling and liquid injection areas respectively operate on half of the number of fixture assemblies; make full use of the rectangular distribution structure, disperse the layout of the workstations, and reasonably reserve the installation space of the mold opening and closing units and the liquid injection unit, and through the rapid synchronous turnover of the turnover unit, reduce the overall operation time of the mold and the time of the filling operation; after the liquid injection and filling of the raw material is completed, after visual inspection by the visual inspection lifting assembly, the mold is lifted from the fixture assembly and waits for the unloading unit to collect the material and load it onto the tray, completing the automated operation of the contact lens mold from mold opening, liquid injection and filling to mold closing;

[0035] The contact lens filling and mold closing device integrates the mold opening, filling and mold closing actions, has a compact overall structure, and a high degree of functional integration. It can perform batch and synchronous filling in multiple filling and injection zones, thereby reducing the overall operation cycle of the mold and improving the filling and injection efficiency. It cooperates with the automatic loading and unloading unit to reduce the risk of manual operation and improve the overall production and processing quality and efficiency of contact lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the present invention after partially hiding;

[0038] Figure 3 It is a top view schematic diagram of the feeding unit of the present invention;

[0039] Figure 4 It is a schematic diagram of the overall structure of the present invention;

[0040] Figure 5 It is a schematic diagram of the structure of the mold opening and closing unit of the present invention;

[0041] Figure 6It is a partial enlarged schematic diagram of the opening and closing mold unit D of the present invention;

[0042] Figure 7 It is a side view of the mold opening and closing unit structure of the present invention;

[0043] Figure 8 It is a partial enlarged schematic diagram of the opening and closing mold unit B of the present invention;

[0044] Fig. 9 It is a partial enlarged schematic diagram of the opening and closing mold unit C of the present invention;

[0045] Fig.10 It is a schematic diagram of the structure of the liquid injection unit of the present invention;

[0046] Fig.11 It is a partial enlarged schematic diagram of the injection unit A of the present invention;

[0047] Fig.12 It is a structural schematic diagram of the visual inspection unit of the present invention;

[0048] Fig.13 It is a schematic diagram of the structure of the turnover unit and the fixture assembly of the present invention. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0050] refer to Figure 1-13 As shown, the present invention provides a contact lens filling and mold closing method, including a turnover unit 200 for a turnover fixture assembly 300, wherein the turnover unit 200 is provided with a loading area, a filling and liquid injection area, and a unloading area, and the specific steps are as follows:

[0051] S10. The loading unit 100 transports the mold to be filled to the fixture assembly 300 located in the loading area;

[0052] S20. The turnover unit 200 drives the fixture assembly 300 and the mold to be filled into the filling and liquid injection area;

[0053] S30. In the filling and injection area, the mold opening and closing unit 500 opens the upper and lower molds of the mold, and after the injection unit 400 fills the injection in the lower mold, the mold opening and closing unit 500 closes the upper and lower molds of the mold;

[0054] S40. The turnover unit 200 drives the fixture assembly 300 and the mold after filling and injection into the unloading area, and the inspection assembly 600 inspects the quality of the mold after filling and injection, and waits for unloading;

[0055] S50. The unloading unit 700 transports the mold after quality inspection to the empty tray to complete the material collection and unloading;

[0056] S60. The turnover unit 200 drives the unloaded fixture assembly 300 to enter the loading area again, and the loading unit 100 loads again, thereby cyclically operating;

[0057] In actual use of the present invention, the turnover unit 200 is a rectangular loop-type circulation track, the fixture assembly 300 is used to carry the contact lens mold, and the turnover unit 200 is divided into a loading area, multiple filling and liquid injection areas, and a unloading area according to functional areas; the loading area is adjacent to the unloading area, and the two filling and liquid injection areas are adjacent, so that the rectangular layout and equipment space are reasonably utilized to reduce the equipment volume; each filling and liquid injection area is provided with two sets of mold opening and closing units 500 and liquid injection units 400; during the filling and mold closing operation, the turnover unit 200 drives multiple fixture assemblies 300 to enter the filling and liquid injection area at the same time, and the two filling and liquid injection areas are adjacent to each other. The liquid area operates on half of the fixture components 300 respectively; the rectangular distribution structure is fully utilized, the workstations are dispersedly arranged, and the installation space of the mold opening and closing unit 500 and the liquid injection unit 400 is reasonably reserved. The turnover unit 200 quickly and synchronously turns over to reduce the overall operation time of the mold and the time of the filling operation; after the liquid injection and filling of the raw material is completed, the mold is lifted from the fixture component 300 after visual inspection by the visual inspection lifting component 600, waiting for the unloading unit 700 to collect the material and load it onto the tray, completing the automated operation of the contact lens mold from mold opening, liquid injection and filling to mold closing.

[0058] The contact lens filling and mold closing method integrates the mold opening, filling and mold closing actions, has a compact overall structure, a high degree of functional integration, and multiple filling and liquid injection zones are filled and filled synchronously in batches, which reduces the overall operation cycle of the mold and improves the liquid injection and filling efficiency. In conjunction with the automatic loading and unloading unit, the risk of manual operation is reduced, and the overall production and processing quality and processing efficiency of the contact lenses are improved.

[0059] In this embodiment, the loading unit 100 includes a tray transport trolley 110, a group of parallel tray moving modules 140 and a tray temporary storage table 150; the front end of each tray moving module 140 is provided with a tray moving gripper 130 and a tray moving module 120 for driving the tray moving gripper 130 to move; the ends of the two tray moving modules 140 are provided with a material moving robot 160; the tray moving module 120 drives the tray moving gripper 130 to move and transports the tray equipped with the mold on the tray transport trolley 110 to the tray moving module 140, and the tray moving module 140 moves the tray equipped with the mold to the side of the loading area; the material moving robot 160 transports the mold on the tray to the fixture assembly 300 located in the loading area; the material moving robot 160 transports the empty tray after half empty to the tray temporary storage table 150 for caching;

[0060] Among them, the tray transport trolley 110 is an AGV trolley, which can carry the tray to the specified position, and the tray moving module 120 is a linear motor module; the tray moving module 120 drives the tray moving gripper 130 to grab the tray containing the mold to be filled from the AGV trolley to the tray moving module 140; the tray moving module 140 transports the tray to the side of the loading area, and the mold on the tray is moved to the fixture assembly 300 via the material moving robot 160; the emptied tray is transferred by the tray moving module 140 to the tray temporary storage table 150; the loading unit 100 has a transport robot 160 responsible for two tray moving modules 140, further improving the overall production efficiency of the equipment.

[0061] In this embodiment, S30 includes the following steps:

[0062] In step S30:

[0063] S31. The lower mold positioning mechanism 560 of the mold opening and closing unit 500 fixes the lower mold of the mold from below the mold to be filled;

[0064] S32. After the upper mold positioning mechanism of the mold opening and closing unit 500 fixes the upper mold of the mold from above the mold to be filled, the mold opening mechanism 550 of the mold opening and closing unit 500 opens the upper mold of the mold, and the upper mold positioning mechanism moves the upper mold away from the lower mold;

[0065] S33. The injection unit 400 is filled with liquid in the lower mold;

[0066] S34. The upper mold positioning mechanism moves the upper mold back to the lower mold and places the upper mold in the lower mold;

[0067] S35. The upper mold positioning mechanism applies pressure to the upper mold to press the upper mold and the lower mold together;

[0068] In step S33:

[0069] S331. The injection unit 400 is in the pumping action, the injection valve group 450 of the injection unit 400 is in the pumping state, and the injection unit 400's injector assembly 460 extracts the raw material from the constant temperature bin 430 for temporary storage;

[0070] S332. When the injection unit 400 is in the injection action, the injection valve group 450 of the injection unit 400 is switched to the injection state, and the needle group module 420 of the injection unit 400 drives the injection needle group 410 to the top of the fixture assembly 300;

[0071] S333. The liquid injector assembly 460 pushes the liquid into the injection needle assembly 410 and fills it into the lower mold to complete the injection filling;

[0072] During liquid injection and filling, the injection valve group 450 is a reversible three-way valve group, and the syringe assembly 460 performs the extraction and injection filling actions of the raw materials. During the extraction action, the injection valve group 450 is in the extraction mode, and the injector assembly 460 extracts the raw materials from the constant temperature warehouse 430 for temporary storage. The constant temperature warehouse 430 is a small constant temperature refrigerator; during the injection action, the injection valve group 450 switches to the injection mode, and the needle group module 420 drives the injection needle group 410 to move to the top of the fixture assembly 300, and the injector assembly 460 pushes the raw materials into the injection needle group 410 to complete the filling and liquid injection action.

[0073] In this embodiment, the lower mold positioning mechanism 560 includes a lower mold positioning nozzle 562 disposed below the fixture assembly 300 and a lower mold positioning driver 561 for driving the lower mold positioning nozzle 562 to move up and down; the mold opening mechanism 550 includes at least one mold opening driver 551, a fork connecting plate 552 installed at the execution end of the mold opening driver 551, and a mold opening fork 553 installed on the fork connecting plate 552 for inserting and separating the upper mold and the lower mold of the contact lens;

[0074] The upper mold positioning mechanism includes a suction nozzle assembly 540 and an upper mold module 520 that pushes the suction nozzle assembly 540 to rise and fall; the upper mold module 520 includes an upper mold lifting drive 521 fixed on the upper mold bracket 510, and the execution end of the upper mold lifting drive 521 is equipped with an upper mold sliding frame 522, and the upper mold sliding frame 522 is slidably installed on the upper mold bracket 510, and a suction nozzle mounting frame 530 for mounting the suction nozzle assembly 540 is arranged at the bottom of the upper mold sliding plate 522; the suction nozzle assembly 540 includes a plurality of suction nozzle slides 542 slidably installed on the suction nozzle mounting frame 530, and an upper mold suction nozzle 541 is installed at the end of each suction nozzle slide 542, and a mold counterweight 541 is installed on the rod body of each suction nozzle slide 542; the upper mold suction nozzle 541 is located above the fixture assembly 300.

[0075] When the jig assembly 300 enters the workstation, the lower mold positioning drive 561 is used to push the lower mold positioning suction nozzle 562 up for adsorption positioning; the lower mold positioning suction nozzle 562 is used to adsorb and fix the lower mold in the jig assembly 300 to ensure the stability of the lower mold during mold opening, filling and mold closing; after mold closing, the lower mold positioning drive 561 is used to push the lower mold positioning suction nozzle 562 down, waiting for the next jig assembly 300 to enter the workstation and start the next work cycle; the mold opening mechanism 550 is located at the side of the liquid injection and filling station, and the mold opening drive 551 is a cylinder, and each mold opening drive 551 corresponds to a mold on the jig assembly 300; the mold opening drive 551 pushes the fork connecting plate 552 forward to insert the mold opening fork 553 into the mold on the jig assembly 300. Since the mold has been positioned by the lower mold positioning assembly 560, only the upper mold is inserted by the mold opening fork 553 and hovers on the mold opening fork 5 53, waiting for the suction nozzle assembly 540 to be adsorbed; multiple upper mold modules 520 can be set on the upper mold bracket 510 as needed, and the upper mold lifting drive 521 is an electric cylinder module. The upper mold lifting drive 521 can push the upper mold sliding frame 522 to perform lifting movement, thereby driving the suction nozzle assembly 540 to achieve the lifting movement of the upper mold after suction; a number of suction nozzle slide bars 542 are slidably installed on the suction nozzle mounting frame 530, and a sliding installation method is adopted to avoid the downward movement during the mold closing process, which is directly transmitted to the mold, thereby reducing the risk of damage to the mold; the bottom of each suction nozzle slide bar 542 is connected to the upper mold suction nozzle 541, and the weight of the mold closing counterweight 543 corresponding to each upper mold suction nozzle 541 is consistent; the use of a reasonable weight of counterweight can not only effectively realize the mold closing action, but also avoid damage to the mold; corresponding to different mold closing requirements, it is only necessary to replace the mold closing counterweight 543 on the suction nozzle slide bar 542.

[0076] In this embodiment, the syringe assembly 460 and the constant temperature chamber 430 are both mounted on the injection main frame 470; the injection needle group 410 is connected to the injection valve group 450 using an injection hose 411; the injection needle group 410 is mounted on the execution end of the needle group module 420, and the needle group module 420 is mounted on the side of the injection main frame 470 using an injection side frame 412;

[0077] The injection valve group 450 realizes the switching of the pumping and injection actions of the raw materials, reduces the overall volume and complexity of the injection and filling equipment, and improves the injection efficiency.

[0078] In this embodiment, the needle group module 420 includes a needle group forward drive 421 installed on the injection side frame 412, a displacement adjustment platform 422 installed on the execution end of the needle group forward drive 421, and a needle group downward drive 423 installed on the execution end of the displacement adjustment platform 422; the needle group forward drive 421 is a linear module, and the needle group downward drive 423 is a cylinder; the needle group forward drive 421 is used to drive the needle group downward drive 423 to move above the fixture assembly 300, and the needle group downward drive 423 drives the needle group module 420 to probe downward for injection; a manually adjustable displacement adjustment platform 422 is also provided between the needle group forward drive 421 and the needle group downward drive 423 to realize precise position adjustment of the execution end to avoid quality problems caused by errors.

[0079] In this embodiment, the execution end of the needle group downward drive 423 is installed with a needle group mounting plate 424; a plurality of injection needles are installed on the needle group mounting plate 424 to form an injection needle group 410; when the number of injection needles needs to be adjusted, it is only necessary to replace the corresponding needle group mounting plate 424, thereby realizing rapid equipment adjustment and debugging to adapt to more types of contact lens-related fixtures.

[0080] In this embodiment, a leakage collection bucket 480 is also installed under the injection needle group 410; after the injection is completed, the injection needle group 410 returns to the initial static position under the drive of the needle group module 420, and the leakage collection bucket 480 can prevent the residual raw material from the needle tip from dripping.

[0081] In this embodiment, the visual inspection unit 600 includes a detection camera 620, a visual inspection driver 610 that drives the detection camera 620 to move horizontally, a fill light board 630, a light board driver 650 that drives the fill light board 630 to move horizontally, and a plurality of top mold assemblies for lifting molds; the visual inspection driver 610 is located above the unloading area of ​​the turnover unit 200, and drives the detection camera 620 to scan the fixture assembly 300; the light board driver 650 is located below the unloading area, and drives the fill light board 630 to move below the fixture assembly 300; the top mold assembly includes a top mold rubber head 660 installed below the unloading area of ​​the turnover unit 200, and a top mold cylinder 670 that drives the top mold rubber head 660 to rise and fall;

[0082] The visual inspection drive 610 is a linear module, and its execution end is connected to a group of detection cameras 620 through a frame plate; the visual inspection drive 610 drives the detection cameras 620 to move to cover all the fixture components 300 in the unloading area to achieve visual inspection; the light board driver 620 is a cylinder. When performing visual inspection, the light board driver 620 moves the fill light board 630 to the bottom of the fixture component 300 to allow light to pass through the mold for fill light, which is convenient for the detection camera 620 to perform visual inspection and shooting; after the visual inspection is completed, the light board driver 620 pushes the fill light board 630 away, and the top mold cylinder 670 pushes the top mold rubber head 660 to push up the mold in the fixture component 300 and wait for the operation of the unloading unit 700.

[0083] In this embodiment, the structural features of the unloading unit 700 are the same as those of the loading unit 100, and the working state process is opposite; therefore, in the unloading process, the tray transport trolley 110 is used to carry empty trays, and the tray moving module 120 drives the tray moving gripper 130 to grab the empty tray from the AGV trolley to the tray moving module 140; the tray moving module 140 transports the empty tray to the side of the unloading area, waiting for the inspection unit 600 to complete the work. When the mold is lifted up, the mold after filling on the fixture assembly 300 is moved to the empty tray by the material moving robot 160. After the full tray is transported, the tray with the filled mold is transferred from the tray moving module 140 to the tray temporary storage table 150, and the material is collected after filling.

[0084] In this embodiment, the jig assembly 300 includes a jig plate 310 installed on the turnover unit 200; the jig plate 310 is provided with a first row of mold grooves 320 and a second row of mold grooves 330 arranged in parallel; the side surfaces of the first mold grooves 320 and the side surfaces of the second mold grooves 330 are respectively provided with mold opening mechanisms 550; the lower mold positioning mechanism 560 is located below the jig plate 310, and the upper mold positioning mechanism is located above the jig plate 310;

[0085] Preferably, at each liquid injection filling station, two mold opening mechanisms 550 are provided on both sides of the double mold slot jig assembly 300 for opening the upper mold and the lower mold; and an upper mold positioning mechanism and a lower mold positioning mechanism 560 are provided to perform the positioning and suction operations of the upper mold and the lower mold; the double slot design for holding the mold, combined with the double mold opening mechanism 550, makes the overall structure more compact, thereby improving the efficiency of one-time liquid injection filling.

[0086] The turnover unit 200 includes a turnover ring rail 210, a plurality of turnover plates 220 slidably arranged on the turnover ring rail 210, a turnover drive mechanism 230 for driving the turnover plates 220 to rotate around the turnover ring rail 210, the fixture plate 310 is arranged on the turnover plate 220, and the turnover drive mechanism 230 is connected by a chain drive or a belt drive and drives the turnover plate 220 to slide on the turnover slide rail 210; two filling and liquid injection areas are arranged, the two filling and liquid injection areas are located on the sides of the turnover ring rail 210, and the two filling and liquid injection areas are located between the processes of the loading area and the unloading area;

[0087] Among them, the turnover drive mechanism 230 is a motor, the turnover ring track 210 is a rounded rectangular ring track with four sides, the output end of the turnover drive mechanism 230 drives the gear plate, and the gear plate then drives the tooth chain, and a number of turnover plates 220 are connected to the tooth chain. Under one rotation action of the turnover drive mechanism 230, the turnover plates 220 on a single side are batch-synchronized and turned over at one time; on the four sides, between the loading area and the unloading area, two adjacent filling and liquid injection areas are provided; in a single filling and liquid injection area, the mold filling of some fixture components 300 is realized, for example, there are 4 fixture components on a single side, and the first and third fixture components 300 are filled and liquid injected in the first filling and liquid injection area, and the second and fourth fixture components 300 are filled and liquid injected in the second filling and liquid injection area; the overall structural layout is compact and reasonable, and synchronous turnover and batch operation are carried out to improve the overall processing efficiency.

[0088] The present invention also provides a contact lens filling and mold clamping system. The above-mentioned contact lens filling and mold clamping method includes a turnover unit 200 for a turnover fixture assembly 300, and a mold opening and closing unit 500, an injection unit 400, a loading unit 100 for providing a mold to be filled, a unloading unit 700 for collecting the filled mold, and a visual inspection unit 600 distributed on the side of the turnover unit.

[0089] The contact lens filling and mold closing system integrates mold opening, filling and mold closing actions, with a compact overall structure and high functional integration. Multiple filling and liquid injection zones can be filled in batches synchronously, which reduces the overall operation cycle of the mold and improves the efficiency of liquid injection and filling. With the automatic loading and unloading unit, it reduces the risk of manual operation and improves the overall production and processing quality and efficiency of contact lenses.

[0090] 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 filling and mold closing method, characterized in that: The invention comprises a turnover unit (200) for rotating a fixture assembly (300), wherein the turnover unit (200) is provided with a loading area, a filling and liquid injection area, and a unloading area. The specific steps are as follows: S10. The loading unit (100) moves the mold to be filled to the jig assembly (300) located in the loading area; S20. The turnover unit (200) drives the fixture assembly (300) and the mold to be filled into the filling and liquid injection area; S30. In the filling and liquid injection area, the mold opening and closing unit (500) opens the upper mold and the lower mold of the mold, and after the liquid injection unit (400) fills the liquid injection in the lower mold, the mold opening and closing unit (500) closes the upper mold and the lower mold of the mold; S40. The turnover unit (200) drives the fixture assembly (300) and the mold after filling and injection into the unloading area, and the visual inspection assembly (600) performs a quality visual inspection on the mold after filling and injection, and then waits for unloading; S50. The unloading unit (700) moves the mold after quality inspection to an empty tray to complete the unloading of the material; S60. The turnover unit (200) drives the unloaded fixture assembly (300) to enter the loading area again, and the loading unit (100) performs loading again, thus completing the cycle.

2. A contact lens filling and mold closing method according to claim 1, characterized in that: The loading unit (100) comprises a tray transport trolley (110), a group of tray moving modules (140) arranged in parallel, and a tray temporary storage table (150); the front end of each tray moving module (140) is provided with a tray moving gripper (130) and a tray moving module (120) for driving the tray moving gripper (130) to move; the ends of the two tray moving modules (140) are provided with material moving manipulators (160); The tray moving module (120) drives the tray moving gripper (130) to move the tray with the mold on the tray transport trolley (110) to the tray moving module (140), and the tray moving module (140) moves the tray with the mold to the side of the loading area; the material moving robot (160) moves the mold on the tray to the fixture assembly (300) located in the loading area; the material moving robot (160) moves the empty tray after it is half empty to the tray temporary storage table (150) for buffering.

3. A contact lens filling and mold closing method according to claim 1, characterized in that: In step S30: S31. The lower mold positioning mechanism (560) of the mold opening and closing unit (500) fixes the lower mold of the mold from below the mold to be filled; S32. After the upper mold positioning mechanism of the mold opening and closing unit (500) fixes the upper mold of the mold from above the mold to be filled, the mold opening mechanism (550) of the mold opening and closing unit (500) opens the upper mold of the mold, and the upper mold positioning mechanism moves the upper mold away from the lower mold; S33. The injection unit (400) fills the lower mold with liquid; S34. The upper mold positioning mechanism moves the upper mold back to the lower mold and places the upper mold in the lower mold; S35. The upper die positioning mechanism applies pressure to the upper die, so that the upper die and the lower die are pressed together.

4. A contact lens filling and mold closing method according to claim 3, characterized in that: In step S33: S331. The injection unit (400) is in the liquid extraction action, the injection valve group (450) of the injection unit (400) is in the liquid extraction state, and the injection device assembly (460) of the injection unit (400) extracts the raw material from the constant temperature bin (430) for temporary storage; S332. When the injection unit (400) is in the injection action, the injection valve group (450) of the injection unit (400) is switched to the injection state, and the needle group module (420) of the injection unit (400) drives the injection needle group (410) to the top of the fixture assembly (300); S333. The liquid injector assembly (460) pushes the liquid into the liquid injection needle assembly (410) and fills the liquid into the lower mold, completing the liquid injection and filling.

5. A contact lens filling and mold closing method according to claim 3, characterized in that: The lower mold positioning mechanism (560) comprises a lower mold positioning suction nozzle (562) arranged below the fixture assembly (300) and a lower mold positioning drive (561) for driving the lower mold positioning suction nozzle (562) to move up and down; the mold opening mechanism (550) comprises at least one mold opening drive (551), a shift fork connecting plate (552) mounted on the execution end of the mold opening drive (551), and a mold opening fork (553) mounted on the shift fork connecting plate (552) for inserting and separating the upper mold and the lower mold of the contact lens; The upper mold positioning mechanism includes a nozzle assembly (540) and an upper mold assembly (520) that pushes the nozzle assembly (540) to rise and fall; the upper mold assembly (520) includes an upper mold lifting drive (521) fixed on the upper mold bracket (510), and an upper mold sliding frame (522) is installed at the execution end of the upper mold lifting drive (521), and the upper mold sliding frame (522) is slidably installed on the upper mold bracket (510), and the bottom of the upper mold sliding plate (522) is provided with A nozzle mounting frame (530) for mounting a nozzle assembly (540); the nozzle assembly (540) comprises a plurality of nozzle slide bars (542) slidably mounted on the nozzle mounting frame (530), an upper mold nozzle (541) being mounted at the end of each nozzle slide bar (542), and a mold counterweight (543) being mounted on the rod body of each nozzle slide bar (542); the upper mold nozzle (541) being located above the fixture assembly (300).

6. A contact lens filling and mold closing method according to claim 4, characterized in that: The syringe assembly (460) and the constant temperature chamber (430) are both mounted on a liquid injection main frame (470); the liquid injection needle group (410) is connected to the liquid injection valve group (450) by means of a liquid injection hose (411); the liquid injection needle group (410) is mounted on the execution end of the needle group module (420), and the needle group module (420) is mounted on the side of the liquid injection main frame (470) by means of a liquid injection side frame (412).

7. A contact lens filling and mold closing method according to claim 1, characterized in that: The visual inspection unit (600) comprises a detection camera (620), a visual inspection driver (610) for driving the detection camera (620) to move laterally, a fill light board (630), a light board driver (650) for driving the fill light board (630) to move horizontally, and a plurality of top mold assemblies for lifting molds; The visual inspection drive (610) is located above the unloading area of ​​the turnover unit (200) and drives the detection camera (620) to scan the fixture assembly (300); the light board drive (650) is located below the unloading area and drives the fill light board (630) to move to the bottom of the fixture assembly (300); The top mold assembly comprises a top mold rubber head (660) installed below the unloading area of ​​the turnover unit (200), and a top mold cylinder (670) for driving the top mold rubber head (660) to rise and fall.

8. A contact lens filling and mold closing method according to claim 3, characterized in that: The jig assembly (300) comprises a jig plate (310) mounted on a turnover unit (200); the jig plate (310) is provided with a first row of mold grooves (320) and a second row of mold grooves (330) arranged in parallel; the side surfaces of the first mold grooves (320) and the side surfaces of the second mold grooves (330) are respectively provided with mold opening mechanisms (550); the lower mold positioning mechanism (560) is located below the jig plate (310), and the upper mold positioning mechanism is located above the jig plate (310).

9. A contact lens filling and mold closing method according to claim 8, characterized in that: The turnover unit (200) comprises a turnover ring rail (210), a plurality of turnover plates (220) slidably arranged on the turnover ring rail (210), a turnover drive mechanism (230) for driving the turnover plates (220) to rotate around the turnover ring rail (210), the fixture plate (310) is arranged on the turnover plate (220), and the turnover drive mechanism (230) is connected by a chain drive or a belt drive and drives the turnover plate (220) to slide on the turnover slide rail (210); two filling and liquid injection areas are arranged, the two filling and liquid injection areas are located on the sides of the turnover ring rail (210), and the two filling and liquid injection areas are located between the processes of the loading area and the unloading area.

10. A contact lens filling and clamping system, characterized in that: A contact lens filling and mold closing method for implementing the above-mentioned claims 1-9 comprises a turnover unit (200) for a turnover fixture assembly (300), and a mold opening and closing unit (500) distributed on the side of the turnover unit (200), a liquid injection unit (400), a loading unit (100) for providing a mold to be filled, a unloading unit (700) for collecting the filled mold, and a visual inspection unit (600).

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