Automatic liquid injection mold closing equipment

Abstract

The invention relates to the technical field of corneal contact lens production equipment. The embodiment of the invention provides automatic liquid injection and mold closing equipment which is used for producing corneal contact lenses and provided with a feeding and discharging station, a liquid injection station, an upper mold feeding station and a pressing station which are sequentially and circumferentially arranged, and the automatic liquid injection and mold closing equipment further comprises a rotating disc, a feeding mechanism and a discharging mechanism, the lower die material tray moving device is arranged at the feeding and discharging station and used for conveying the lower die material tray provided with the lower die to the material position; the liquid injection module is arranged at the liquid injection station and is used for injecting liquid into the lower mold in the lower mold tray at the material position; the upper die supply device is arranged at the upper die feeding station and is used for conveying the upper die to the lower die in the lower die tray; and the pressing device is arranged at the pressing station and is used for pressing the upper die and the lower die. By means of the technical scheme, the technical problem that in the prior art, the liquid injection mold closing efficiency is low is solved.

Description

Technical Field

[0001] The present disclosure and the technical field of corneal contact lens production equipment, in particular, relate to an automatic liquid injection and mold closing device for corneal contact lenses such as contact lenses and cosmetic contact lenses. Background Art

[0002] Contact Lens (CL) is a lens that directly contacts the surface of the cornea and is widely used in vision correction, eye disease treatment and beauty. Common contact lenses include invisible myopia glasses and cosmetic lenses. The processing of CL usually includes upper and lower mold preparation, lower mold injection, upper and lower mold closing, curing and mold opening and edge trimming.

[0003] In the manufacturing process of corneal contact lenses (such as contact lenses), automatic mold filling and mold closing is usually the second process. After the lower mold is positioned, the contact lens liquid is injected into the mold, and then the upper mold is placed into the lower mold for pressing. After completing this process, the pressed mold is placed in a tunnel oven for baking and molding.

[0004] In the prior art, liquid injection and mold closing equipment mostly adopts manual operation to position the mold. Manual liquid injection not only increases the risk of liquid contamination of contact lenses and generates bubbles, but also has high labor costs, low yields, and low production efficiency. Even if there are related equipment for liquid injection and mold closing in the prior art, there are still problems such as low automation and unreasonable equipment layout, resulting in low production efficiency. Summary of the invention

[0005] In order to overcome the above-mentioned defects, the present disclosure provides an automatic liquid injection and mold closing device, which solves the technical problem of low liquid injection and mold closing efficiency when manufacturing contact lenses in the prior art.

[0006] According to one aspect, the present disclosure provides an automatic liquid injection and mold closing device for producing corneal contact lenses, comprising a lower mold loading station, a liquid injection station, an upper mold loading station, a pressing station and a material unloading station arranged in a circumferential manner; and further comprising: A turntable having a material level, wherein the turntable is configured such that when the turntable rotates, the material level sequentially passes through the lower die loading station, the liquid injection station, the upper die loading station, the pressing station and the unloading station.

[0007] Optionally, in the automatic liquid injection mold clamping equipment, the lower mold loading station and the unloading station are the same loading and unloading station.

[0008] Optionally, the automatic liquid injection mold clamping equipment also includes: A lower die material tray shifting device, which is arranged at the lower die loading station and is used to deliver the lower die material tray equipped with the lower die to the material position; A liquid injection module, the liquid injection module is arranged at the liquid injection station, and is used to inject liquid into the lower mold in the lower mold material tray placed on the material position; An upper die feeding device, which is arranged at the upper die feeding station and is used to feed the upper die to the lower die in the lower die tray; A pressing device is arranged at the pressing station and is used for pressing the upper mold and the lower mold.

[0009] Optionally, the automatic liquid injection mold clamping equipment also includes: A lower mold material tray supply device, the lower mold material tray supply device is arranged on one side of the lower mold material tray shifting device, and is used to supply a lower mold material tray equipped with a lower mold to the lower mold material tray shifting device; An upper mold material tray supply device is arranged on one side of the upper mold supply device and is used to supply the upper mold to the upper mold supply device.

[0010] Optionally, the automatic liquid injection mold clamping equipment also includes: A lower mold dust removal device, which is arranged between the lower mold material tray supply device and the lower mold material tray moving device, and is used to remove dust from the lower mold; An upper mold dust removal device is arranged between the upper mold material tray supply device and the upper mold supply device, and is used to remove dust from the upper mold.

[0011] Optionally, in the automatic liquid injection and mold closing equipment, the moving path of the lower mold material tray moving device is configured to pass through the lower mold material tray supply device, the lower mold loading station and the unloading station, and can deliver the lower mold material tray with the lower mold to the material position, and can deliver the lower mold material tray loaded with the upper mold and lower mold that have completed the pressing from the material position to the tunnel oven.

[0012] Optionally, the liquid injection module includes: A liquid injection track, the liquid injection track is located above the liquid injection station; A liquid injection transverse moving member, the liquid injection transverse moving member is movably arranged on the liquid injection track; A liquid injection lifting member, the liquid injection lifting member is arranged on the liquid injection transverse moving member for lifting and lowering movement; An injection type liquid injection machine, which is arranged on the liquid injection lifting member and has a plurality of injection heads; A liquid tank, which is arranged below the liquid injection track and located on one side of the injection liquid injection machine, and has a plurality of liquid suction positions, and the injection liquid injection machine is configured to suck the liquid in the liquid suction positions through the injection head; A peristaltic pump, the peristaltic pump is used to supply liquid to the liquid suction level to keep the liquid level constant; A temperature sensor is arranged on the liquid tank.

[0013] Optionally, the upper mold supply device includes: An upper die feeding track, wherein the upper die feeding track is located at the upper die feeding station; A first suction module, which is movably disposed on the upper die feeding track and is configured to be movable so as to suck and deliver the upper die on the upper die material tray feeding device to the upper die dust removal device; The second suction module is movably arranged on the upper mold supply track and is configured to be movable so as to suck the upper mold on the upper mold dust removal device into the lower mold in the lower mold material tray.

[0014] Optionally, the pressing device includes: A pressing lifting member, wherein the pressing lifting member is arranged at the pressing station; A pressing piece is used to press the lower mold equipped with the upper mold. The pressing piece is configured to move following the pressing lifting piece and can be lifted and lowered relative to the pressing lifting piece. The pressing piece is configured to press the upper mold downward by gravity.

[0015] Optionally, in the automatic liquid injection mold clamping device, the pressing and lifting member has a vertical hole, and the pressing member includes: A rod body, the rod body being movably disposed in the vertical hole; An adjusting weight is arranged at the upper end and / or the lower end of the rod body. The rod body or the adjusting weight is used to press down the upper mold. The adjusting weight is used to adjust the downward force.

[0016] Optionally, in the automatic liquid injection mold clamping device, the adjusting weight has a through hole in the axial direction and a screw hole in the radial direction, the rod body passes through the through hole, and the pressing piece further includes: A locking screw is threadedly connected to the screw hole and is used to lock the adjustment weight.

[0017] Optionally, the lower mold material tray supply device includes: A lower mold material tray feeding position, which is arranged on one side of the lower mold material tray moving device and is used to stack and place a plurality of lower mold material trays equipped with lower molds; The lower mold material tray clamp is movably and liftably arranged between the lower mold material tray feeding position and the lower mold material tray shifting device, and the lower mold material tray clamp is configured to clamp the uppermost lower mold material tray on the lower mold material tray feeding position and send it to the lower mold material tray shifting device.

[0018] Optionally, the upper mold material tray supply device includes: An upper mold material tray feeding position and an upper mold material tray closing position, wherein the upper mold material tray feeding position and the upper mold material tray closing position are respectively arranged on both sides of the upper mold supply device, the upper mold material tray feeding position is used to stack and place a plurality of upper mold material trays equipped with upper molds, and the upper mold material tray closing position is used to receive the upper mold material tray after the upper mold is taken out; The upper mold material tray clamp is movably and liftably arranged between the upper mold material tray feeding position and the upper mold material tray closing position, and the upper mold material tray clamp is configured to have a moving path passing through the upper mold supply device and can be removed from the upper mold by the upper mold supply device.

[0019] Optionally, the lower mold dust removal device includes: A dust collection box, which is lifted and arranged above the moving path of the clamping claws of the lower die material plate and is used to vacuum the lower die; A static eliminator is connected to the dust collection box.

[0020] Optionally, the upper mold dust removal device includes: A dust suction block, wherein the dust suction block has a plurality of negative pressure dust suction grooves, and the negative pressure dust suction grooves are used to place the upper mold; A dust extraction pipe is connected to the negative pressure dust suction groove.

[0021] The automatic liquid injection and mold closing equipment disclosed in the present invention adopts a design concept of arranging workstations in a circle around a turntable, and transporting materials between each workstation through the rotation of the turntable, aiming to achieve automation and efficiency of the production process. By closely linking each process, the material transportation distance and time between workstations are shortened, and production efficiency is improved. Each key component, such as the lower mold material tray moving device, the liquid injection module, the upper mold supply device, and the pressing device, respectively, use automated operation and precise control technology to accurately control the mold handling, liquid injection, upper mold placement, and pressing processes, avoid errors and contamination risks caused by manual operation, and thus improve product quality and production efficiency. Among them, the high-precision rotation control of the turntable and the adaptive design of the material level and the lower mold material tray ensure the stability and accuracy of the mold flow; the clamping claws of the lower mold material tray moving device realize the precise handling of the lower mold material tray; the various components of the injection module work together to ensure the accuracy and sterility of the injection; the feeding and positioning device of the upper mold feeding device ensures the accurate placement of the upper mold; the pressure mechanism and control system of the pressing device realize the precise control of the pressing parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments of the present disclosure. Obviously, the drawings described below are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on the contents of the exemplary embodiments of the present disclosure and these drawings without creative work.

[0023] Figure 1 A schematic diagram of the production process of corneal contact lenses in one embodiment of the present disclosure; Figure 2 It is a schematic diagram of a top view of an automatic liquid injection and mold clamping device in one embodiment of the present disclosure; Figure 3 for Figure 2 A schematic diagram of the structure of an automatic liquid injection and mold clamping device containing a tunnel oven in an embodiment; Figure 4 for Figure 2 A schematic structural diagram of a lower die tray shifting device in an embodiment of the present invention; Figure 5 for Figure 2 A schematic structural diagram of a liquid injection module in an embodiment of the present invention; Figure 6 for Figure 2 A schematic structural diagram of an upper mold supply device in an embodiment of the present invention; Figure 7 for Figure 2 A schematic structural diagram of a pressing device in an embodiment of the present invention; Figure 8 for Figure 2 A schematic structural diagram of a lower mold material tray supply device in an embodiment; Fig. 9 for Figure 2 A schematic structural diagram of an upper mold material tray supply device in an embodiment; Fig.10 for Figure 2 A schematic structural diagram of a lower mold dust removal device in an embodiment of the present invention; Fig.11 for Figure 2 A schematic structural diagram of an upper mold dust removal device in an embodiment of the present invention; In the figure: turntable 110, material position 111, loading and unloading station 200, lower die material tray 201, lower die 202, lower die material tray moving device 210, material taking track 211, material taking mechanism 212, lower die material tray feeding device 220, lower die material tray feeding position 221, lower die material tray clamping claw 222, tray lifting mechanism 223, tray lifting cylinder 224, lower die material tray Mold dust removal device-230, dust collection box-231, static eliminator-232, liquid injection station-300, liquid injection module-310, liquid injection track-311, liquid injection traverse-312, liquid injection lifting part-313, injection liquid injection machine-314, injection head-315, liquid tank-316, liquid suction level-317, liquid suction level-317, peristaltic pump-318, temperature sensor-31 9. Upper mold loading station-400, upper mold tray-401, upper mold-402, upper mold feeding device-410, upper mold feeding track-411, first suction module-412, second suction module-413, upper mold tray feeding device-420, upper mold tray feeding position-421, upper mold tray closing position-422, upper mold tray clamp-423, upper mold dust removal device-430, dust removal Block-431, negative pressure suction groove-432, dust suction pipe-433, pressing station-500, pressing device-510, pressing lifting member-511, pressing member-512, vertical hole-513, rod body-514, adjusting weight-515, through hole-516, screw hole-517, locking screw-518, tunnel oven-610, tunnel entrance-611, tunnel exit-612. DETAILED DESCRIPTION

[0024] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0025] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0026] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0027] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0029] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] like Figure 1As shown, when producing corneal contact lenses (such as contact lenses, cosmetic lenses, etc.), the mold is prepared first: prepare the upper mold 402 (convex mold) and the lower mold 202 (concave mold) that match each other to ensure that the mold is clean and undamaged. Then the lower mold is injected with liquid, and the prepared liquid is accurately injected into the lower mold 202 using the liquid injection equipment to ensure the accuracy of the injection amount and position. After that, the mold is closed, and the upper mold 402 and the lower mold 202 are tightly fitted by the mold closing device to ensure accurate position and appropriate clamping force. Then, curing is performed, and the mold after mold closing is heated to solidify the liquid, and the heating temperature and time are accurately controlled. Finally, the mold is opened and trimmed, and the lens is taken out of the mold, and the edges are trimmed with professional equipment to remove the burrs to obtain the finished product. In the prior art, the above steps mostly use manual operation to position the mold and manually inject liquid, which not only increases the risk of liquid contamination of the contact lens and generates bubbles, but also has high labor costs, low yields, and low production efficiency. Even if there are related equipment for liquid injection and mold closing in the prior art, there are also problems such as low automation and unreasonable equipment layout, resulting in low production efficiency.

[0031] like Figure 2 As shown, it shows an automatic liquid injection and mold closing device in one embodiment of the present disclosure, which can automate the whole process of corneal contact lens processing. Figure 2 As shown, the automatic liquid injection mold clamping equipment in this embodiment has a loading and unloading station 200, a liquid injection station 300, an upper mold loading station 400 and a pressing station 500 arranged in a circle in sequence. Compared with the traditional layout, this circular arrangement layout can make the mold flow between the various stations more efficient, reduce the detour and waiting time during material transportation, and improve the overall production efficiency. In an optional alternative embodiment, the loading and unloading stations 200 can be different, but adjacent or non-adjacent. For example, the automatic liquid injection mold clamping equipment has a lower mold loading station, a liquid injection station 300, an upper mold loading station 400, a pressing station 500 and a blanking station arranged in a circle in sequence. The lower mold loading station and the blanking station are not the same station, and the two are adjacent, or there are other stations or components between the two.

[0032] The turntable 110 can rotate by itself and has a material level 111, on which a mold can be placed. The turntable 110 can drive the mold on the material level 111 to move between various stations. According to the production rhythm, it rotates at a certain speed and angle to ensure that the material level 111 can accurately pass through the loading and unloading station 200, the injection station 300, the upper mold loading station 400 and the pressing station 500 in sequence. For example, the turntable 110 can be driven by a high-precision motor, and with a suitable control system, the angle and time of each rotation can be accurately controlled to ensure the operation time and connection accuracy of each station. The material level 111 is designed to place and position the lower mold material disc 201, and its shape and size match the material level 111 to ensure that the lower mold material disc 201 will not deviate or shake during the rotation of the turntable 110, thereby ensuring the stability and accuracy of the subsequent operation of each station.

[0033] The lower mold material tray shifting device 210 is arranged at the loading and unloading station 200 (in an optional alternative embodiment, the lower mold material tray shifting device 210 is arranged at the lower mold loading station and the unloading station), and is used to accurately deliver the lower mold material tray 201 equipped with the lower mold 202 to the material level 111. The shifting device can be in the form of a mechanical arm, which is equipped with a positioning sensor and a grasping device. First, the positioning sensor can accurately identify the position and posture of the lower mold material tray 201, and then the grasping device firmly grasps the lower mold material tray 201 through vacuum adsorption or mechanical clamping, and then places it steadily on the material level 111 of the turntable 110 according to a preset path. Compared with manual placement, this automated tray shifting operation is not only faster, but also can ensure the position accuracy of the lower mold material tray 201, greatly reducing the possibility of problems in subsequent processes due to inaccurate placement.

[0034] The liquid injection module 310 is arranged at the liquid injection station 300, and is used to inject liquid into the lower mold 202 in the lower mold material tray 201 placed on the material level 111. The liquid injection module 310 generally includes a liquid storage tank, an infusion pipeline, an injection head, and a precise flow control device. The liquid storage tank is used to store the contact lens molding liquid, and the infusion pipeline transports the liquid in the liquid storage tank to the injection head. The injection head must be compatible with the injection port of the lower mold 202 and can accurately inject the liquid into the lower mold 202. The precise flow control device can accurately control the volume of each injection according to the preset injection amount, avoiding the problem of inconsistent injection amount caused by unskilled operation during manual injection, thereby ensuring the stability of product quality. At the same time, the injection process is carried out in a clean environment, reducing the risk of contamination.

[0035] The upper die feeding device 410 is arranged at the upper die feeding station 400, and is used to deliver the upper die 402 to the lower die 202 in the lower die tray 201. The upper die feeding device 410 can use a suitable feeding method to neatly arrange the upper dies 402 and deliver them one by one or in rows to the designated position. During the conveying process, a positioning detection device is also equipped to ensure that the upper die 402 can be accurately placed in the lower die 202, and the placement posture meets the requirements. For example, the positioning device can monitor the position and angle of the upper die 402 in real time through an optical sensor or a mechanical positioning structure. When a position or angle deviation is found, it is corrected in time through an adjustment mechanism to ensure that the upper die 402 and the lower die 202 are accurately docked.

[0036] The pressing device 510 is arranged at the pressing station 500, and is used for pressing the upper mold 402 and the lower mold 202. The pressing device 510 generally includes a pressure mechanism and a control system. The pressure mechanism needs to be able to provide stable and adjustable pressure to ensure that the upper mold 402 and the lower mold 202 are tightly pressed together, so that the contact lens liquid is evenly distributed in the mold, and the molding quality of the product is guaranteed. The control system can accurately control the parameters such as the pressing pressure, pressing time and pressing speed according to different product requirements. For example, for contact lenses of different materials and thicknesses, by adjusting these parameters, the best pressing effect can be achieved, and the yield of the product can be further improved.

[0037] This automatic liquid injection and mold closing equipment adopts the design concept of arranging workstations in a circle around the turntable 110, and transporting materials between the workstations through the rotation of the turntable 110, aiming to achieve automation and efficiency of the production process. By closely connecting each process, the material transportation distance and time between workstations are shortened, and production efficiency is improved. Each key component, such as the lower mold material tray moving device 210, the liquid injection module 310, the upper mold supply device 410 and the pressing device 510, respectively, uses automated operation and precise control technology to accurately control the mold handling, liquid injection, upper mold placement and pressing processes, avoid errors and contamination risks caused by manual operation, and thus improve product quality and production efficiency. Among them, the high-precision rotation control of the turntable 110 and the adaptive design of the material level 111 and the lower mold material tray 201 ensure the stability and accuracy of the mold flow; the mechanical arm and positioning grasping device of the lower mold material tray moving device 210 realize the precise transportation of the lower mold material tray 201; the various components of the injection module 310 work together to ensure the accuracy and sterility of the injection; the feeding and positioning detection device of the upper mold supply device 410 ensures the accurate placement of the upper mold 402; the pressure mechanism and control system of the pressing device 510 realize the precise control of the pressing parameters.

[0038] The circular arrangement of workstations and the material conveying method of the turntable 110 enable the mold to flow smoothly between the workstations, reduce the material transportation time, and realize continuous production. Compared with traditional manual operation, the production cycle of a single product is greatly shortened, and the overall production efficiency is significantly improved. For example, in the same time, the number of products produced by this equipment can be increased several times compared with the traditional method. This is due to the efficient rotation of the turntable 110 and the close connection of each workstation. Driven by the turntable 110, the lower mold material tray 201 can quickly and accurately reach each workstation, reducing waiting time.

[0039] The automated operation process of each key component, such as the automatic tray moving of the lower mold tray moving device 210, the automatic liquid injection of the liquid injection module 310, the automatic upper mold supply of the upper mold supply device 410, and the automatic pressing of the pressing device 510, greatly reduces the time of manual intervention and further improves production efficiency. The automated operation is not only fast, but also can maintain a stable working rhythm and is not affected by factors such as manual fatigue.

[0040] The precise injection control and flow rate adjustment device of the injection module 310 ensures that the amount of liquid injected each time is highly consistent, effectively avoiding product quality problems caused by uneven injection amount, such as inconsistent lens thickness, etc. The precise matching of the injection head and the injection port of the lower mold 202 ensures uniform injection of liquid and improves product quality stability.

[0041] The positioning detection and adjustment mechanism of the upper mold supply device 410 and the precise pressure, time and speed control of the pressing device 510 ensure that the upper mold 402 and the lower mold 202 are accurately docked and tightly pressed, so that the contact lens liquid is evenly distributed in the mold, the product molding quality is improved, and the product yield rate is improved. For example, the yield rate can be increased by several percentage points compared with traditional manual operation.

[0042] Compared with the existing contact lens production technology, it reduces manual operations in multiple links, significantly reduces dependence on manual labor, and effectively reduces labor costs. The process that originally required the collaboration of multiple people now only requires a few people to monitor the operation of the equipment, greatly reducing labor costs.

[0043] In some examples, such as Figure 2 As shown, in order to further optimize the production process, realize the automation and efficiency of material supply, and reduce the time cost and potential risks brought by manual intervention in the material supply link, a lower mold material tray supply device 220 and an upper mold material tray supply device 420 can be added to improve the entire production system, so that the equipment can achieve automation and seamless connection of the entire process from material supply to final product molding.

[0044] The lower mold material tray supply device 220 is arranged on one side of the lower mold material tray shifting device 210. It generally includes a tray storage rack, a conveying mechanism and a positioning device. The tray storage rack is used to store multiple lower mold material trays 201 equipped with lower molds 202, which can be a multi-layer or tower structure to save space and facilitate management. The conveying mechanism is used to convey the lower mold material trays 201 on the storage rack one by one to the position where the lower mold material tray shifting device 210 can grab them. The conveying mechanism can be in the form of a belt conveyor, a chain conveyor or a roller conveyor, etc., and is selected according to actual production needs and site conditions. The positioning device ensures that the lower mold material tray 201 stops accurately at the specified position so that the lower mold material tray shifting device 210 can grab it accurately. For example, the positioning device can be a photoelectric sensor or a mechanical positioning block. When it is detected that the lower mold material tray 201 reaches the specified position, the conveying mechanism stops running. In this way, the lower mold material tray supply device 220 realizes automatic and continuous supply of the lower mold material tray 201 to the lower mold material tray moving device 210, reducing the time and labor cost of manual handling of the trays, and also improving the accuracy and stability of material supply.

[0045] The upper die tray supply device 420 is arranged on one side of the upper die supply device 410. Its structure is similar to that of the lower die tray supply device 220, and it also includes a tray storage unit, a transmission component and a positioning component. The tray storage unit is used to neatly arrange the upper die 402, and a special storage slot or tray can be designed according to the shape and size of the upper die 402 to prevent the upper die from being damaged or deformed during storage. The transmission component transports the upper die 402 from the storage unit to the material taking position of the upper die supply device 410, and the transmission method can be a linear slide rail, a screw conveyor, etc., which is specifically determined according to the equipment layout and production rhythm. The positioning component ensures that the upper die 402 accurately stays at a position where the die supply device 410 can be smoothly grasped, for example, by magnetic positioning, mechanical bayonet positioning, etc. to achieve precise positioning. Through the upper die tray supply device 420, the upper die 402 can be supplied to the upper die supply device 410 in an orderly and efficient manner, avoiding the delays and errors that may be caused by manual die removal, and further improving the automation and production efficiency of the entire production process.

[0046] The design of the lower mold material tray supply device 220 and the upper mold material tray supply device 420 follows the principle of automated material supply, and is intended to be organically combined with the existing liquid injection and mold clamping equipment to achieve seamless docking of material supply and processing procedures. By setting up a special storage, conveying and positioning mechanism, the lower mold material tray 201 and the upper mold 402 can be accurately supplied to the corresponding operating device according to the production rhythm. This design reduces the manual participation in the material supply link and reduces the interference of human factors in the production process. At the same time, the automation mechanism is used to improve the efficiency and accuracy of material supply, ensuring that the entire automatic liquid injection and mold clamping equipment can operate stably and efficiently.

[0047] The lower die tray supply device 220 and the upper die tray supply device 420 realize the automatic supply of materials, and there is no need for manual frequent handling and placement of the lower die tray 201 and the upper die 402, which saves a lot of time. The lower die tray supply device 220 can continuously provide the lower die tray 201 to the lower die tray transfer device 210, and the upper die tray supply device 420 can also timely supply the upper die 402 to the upper die supply device 410, ensuring that each station will not stagnate due to waiting for materials, further shortening the production cycle of the product and improving the overall production efficiency.

[0048] The automated material supply method matches the other automated workstations of the equipment, forming a smoother production line, reducing time waste in the production process, and enabling the equipment to perform production operations at a higher frequency, thereby increasing product output per unit time.

[0049] Since the lower mold material tray supply device 220 and the upper mold material tray supply device 420 use precise positioning and conveying mechanisms, the position and posture of the lower mold 202 and the upper mold 402 are accurately and consistently supplied each time. This provides a stable basic condition for subsequent processes such as liquid injection and mold closing, helps to improve the consistency and stability of products, reduces product quality problems caused by inaccurate material placement, and further improves product yield.

[0050] The manual contact with materials link is reduced, and the risk of damage to the lower mold 202 and the upper mold 402 due to improper manual operation is reduced, thereby ensuring the accuracy and service life of the mold, and indirectly improving the stability of product quality.

[0051] The lower mold material tray supply device 220 and the upper mold material tray supply device 420 improve the automation system of the automatic liquid injection and mold closing equipment, so that all links from material supply to product molding can be automated, further improving the overall automation level of the equipment. The addition of the lower mold material tray supply device 220 and the upper mold material tray supply device 420 significantly optimizes the production process of the automatic liquid injection and mold closing equipment, improves the performance of the equipment, and provides a strong guarantee for the efficient and high-quality production of corneal contact lenses.

[0052] In some examples, such as Figure 2 As shown, in order to further improve product quality, it is necessary to add a dust removal step for the lower mold 202 and the upper mold 402 in the material supply link. The setting of the lower mold dust removal device 230 and the upper mold dust removal device 430 is intended to ensure that the mold surface entering the liquid injection and mold closing process is clean and reduce product quality problems caused by mold contamination.

[0053] The lower mold dust removal device 230 is arranged between the lower mold material tray supply device 220 and the lower mold material tray moving device 210. It can include a dust collection component, a purge component and a transmission mechanism. The dust collection component usually includes a dust hood and a vacuum pump. The shape and size of the dust collection hood are adapted to the lower mold 202, and can effectively cover the surface of the lower mold to ensure that the dust generated during the purge process is sucked away in time. The vacuum pump provides a strong suction force to transport the dust collected by the dust collection hood to the dust collection box through a pipeline. For example, the dust collection hood can be designed to be adjustable, and the shape and position can be fine-tuned according to the lower mold 202 of different specifications to achieve the best dust collection effect. The purge component adopts a high-pressure air gun or an ultrasonic nozzle. The high-pressure air gun blows up the dust attached to the surface of the lower mold 202 by ejecting a high-speed airflow, making it easier to be collected by the dust collection component. The ultrasonic nozzle uses the high-frequency vibration of ultrasonic waves to loosen the dust on the surface of the lower mold, and then it is sucked away by the dust collection component. In practical applications, a suitable blowing method can be selected according to the material of the lower mold 202 and the degree of dust adhesion. For example, for a lower mold with a relatively smooth surface, a high-pressure air gun may be sufficient to remove dust; while for some lower molds with complex structures or stubborn dust adhesion, an ultrasonic nozzle may be used.

[0054] The upper mold dust removal device 430 is arranged between the upper mold material tray supply device 420 and the upper mold supply device 410, and its structure and working principle are similar to those of the lower mold dust removal device 230. It is also equipped with a dust hood and a vacuum pump adapted to the upper mold 402. Since the shape and size of the upper mold may be different from that of the lower mold, the design of the dust hood will be adjusted accordingly to ensure effective dust collection on the entire upper mold surface. Purge component: Select a suitable purge method according to the characteristics of the upper mold 402, such as a high-pressure air gun or an ultrasonic nozzle. For example, if there are some small grooves or gaps on the surface of the upper mold, an ultrasonic nozzle may be more conducive to removing dust therein.

[0055] The design of the lower mold dust removal device 230 and the upper mold dust removal device 430 is based on the principle of cleaning the mold surface to improve product quality. Through the coordinated work of the dust collection component, the purge component and the transmission mechanism, the dust on the mold surface is first loosened or blown up by the purge component, and then collected in time by the dust collection component, and finally the transmission mechanism is used to ensure that all parts of the mold can be cleaned. This design can effectively remove dust and impurities on the mold surface during the material supply link to prevent them from entering the liquid injection and mold closing process, thereby ensuring product quality. At the same time, the dust removal device is set between the tray supply device and the mold supply device to achieve the continuity of the production process without affecting the overall production rhythm.

[0056] The lower mold dust removal device 230 and the upper mold dust removal device 430 can effectively remove dust and impurities on the mold surface, greatly reducing product defects, bubbles and other problems caused by mold contamination. After dust removal, the mold entering the liquid injection and mold closing process is cleaner, making the quality of the produced corneal contact lenses more stable and the product yield significantly improved. The clean mold surface helps the uniformity of liquid injection and the close fit of the mold, further improving the molding quality of the product, so that the produced corneal contact lenses have better performance in optical performance, comfort and other aspects.

[0057] The lower mold dust removal device 230 and the upper mold dust removal device 430 are organically combined with the existing material supply and liquid injection and mold closing equipment, further improving the automation process of the entire production system. From material supply, mold dust removal to liquid injection and mold closing, each link is automatically connected, reducing manual intervention and improving the degree of automation of production. This coherent production process helps to improve production efficiency, reduce waiting time and human errors in the production process, and make the entire production process smoother and more efficient.

[0058] In some examples, such as Figure 3 As shown, the tunnel oven 610 is introduced and the moving path of the lower mold tray moving device 210 is optimized, aiming to improve the entire production process, achieve seamless connection from liquid injection and mold closing to heating and curing, and further improve the continuity and automation of production.

[0059] The tunnel oven 610 is arranged at one side of the unloading station (or the unloading station 200), and is a key device for achieving heating and curing of corneal contact lenses. The two ends of the tunnel oven 610 are respectively provided with a tunnel entrance 611 and a tunnel exit 612. The oven has a heating system, a temperature control system and a conveying device inside.

[0060] The lower die tray moving device 210 was originally responsible for delivering the lower die tray 201 equipped with the lower die 202 to the material position 111 of the turntable 110. Now, its moving path is further extended to the unloading station, and thus passes through the lower die tray supply device 220, the lower die loading station, the unloading station (when the lower die loading station and the unloading station are at the same position, it passes through the loading and unloading station 200) and the tunnel entrance 611. This means that the lower die tray moving device 210 can not only complete the loading task, but also take out the lower die tray 201 from the material position 111 after the mold is pressed, and send it to the tunnel entrance 611 of the tunnel oven 610.

[0061] The lower mold tray moving device 210 can use a multi-axis robotic arm to achieve a complex moving path. The robotic arm is equipped with a visual recognition system and a motion control system. The visual recognition system is used to accurately locate the position and posture of the lower mold tray 201, and the motion control system controls the movement of each joint of the robotic arm according to the preset path instructions to achieve precise grasping and transfer. For example, when it is necessary to take out the lower mold tray 201 that has completed the pressing from the material position 111 and send it to the tunnel entrance 611, the visual recognition system first identifies the position of the tray, and the motion control system controls the robotic arm to move above the tray, grabs the tray by vacuum adsorption or mechanical grippers, and then smoothly delivers the tray to the tunnel entrance 611 according to the planned path to ensure accurate docking with the conveying device of the tunnel oven 610.

[0062] By setting the tunnel oven 610 on one side of the loading and unloading station 200 and optimizing the moving path of the lower mold tray moving device 210, a continuous and efficient production process is constructed. The tunnel oven 610 uses a heating system, a temperature control system and a conveying device to provide stable conditions for the curing of corneal contact lenses. This design reduces manual handling and intervention, and improves production efficiency and product quality stability.

[0063] The close connection between the tunnel oven 610 and the existing liquid injection and mold closing equipment eliminates the waiting time and manual transfer time of the mold from pressing to curing. The lower mold material tray moving device 210 can quickly send the pressed mold into the tunnel oven 610, making the entire production process more compact and significantly shortening the product production cycle. Now through automated connection, the product output per unit time has been greatly improved. The efficient heating and conveying system inside the tunnel oven 610 can handle multiple molds at the same time, realize continuous production, and further improve production efficiency. The integration of the tunnel oven 610 with existing equipment further improves the automation system of the automatic liquid injection and mold closing equipment, so that the entire production process from material supply, liquid injection, mold closing to curing has achieved a higher degree of automation. The operator only needs to monitor the operation of the equipment, which reduces tedious manual operations and improves the convenience of production management.

[0064] In some examples, such as Figure 4 As shown, in order to further improve the working efficiency and accuracy of the lower mold material tray moving device 210, the device is refined and divided into a material picking track 211 and a material picking mechanism 212.

[0065] The material picking track 211 is arranged above the lower die material tray supply device 220, the lower die loading station, the unloading station (when the lower die loading station and the unloading station are in the same position, it is the loading and unloading station 200) and the tunnel entrance 611. It is the path basis for the movement of the material picking mechanism 212. The shape and layout of the material picking track 211 are designed according to the positions of the various components of the equipment to ensure that the material picking mechanism 212 can move smoothly along the track to various key positions. For example, the track starts from above the lower die material tray supply device 220, extends to above the loading and unloading station 200, and then extends to above the tunnel entrance 611, forming a spatial track covering the key nodes of material transfer. Positioning marks or sensor installation grooves can be set on the track to accurately determine the position of the material picking mechanism 212 and provide a position reference for its accurate docking at each station.

[0066] The material taking mechanism 212 is movably (eg, slidably) arranged on the material taking track 211, and is a core component for realizing the grabbing and transfer of the lower mold material tray 201. The material taking mechanism 212 may include a driving device, a grabbing device, and a control system.

[0067] By designing the lower mold material tray shifting device 210 as a combination of a material picking track 211 and a material picking mechanism 212, the material picking track 211 is used to provide a stable moving path, on which the material picking mechanism 212 moves and performs grabbing and transferring operations. The layout of the material picking track 211 ensures that the material picking mechanism 212 can cover the key position of material transfer, and the driving device, grabbing device and control system of the material picking mechanism 212 work together to achieve efficient and accurate transfer of the lower mold material tray 201. This design makes the lower mold material tray shifting device 210 work more orderly and stable, and cooperates more closely with other parts of the equipment, thereby improving the operating efficiency of the entire automatic liquid injection and mold clamping equipment.

[0068] The reasonable layout of the material-collecting track 211 enables the material-collecting mechanism 212 to move to each station in the shortest path, reducing the transfer time. For example, compared with the traditional trackless movement method, the material-collecting mechanism 212 moves faster on the material-collecting track 211, and there is no need to find a path in a complex space. It can quickly complete the transfer task from the lower mold material tray supply device 220 to the loading and unloading station 200 and from the loading and unloading station 200 to the tunnel entrance 611, greatly improving the material transfer efficiency, thereby improving the efficiency of the entire production process. The efficient drive device of the material-collecting mechanism 212 can achieve fast start and stop and high-speed movement, further shortening the time interval of each transfer, enabling the equipment to process more lower mold material trays 201 per unit time, and improving production efficiency.

[0069] The relatively independent design of the material-collecting track 211 and the material-collecting mechanism 212 makes it more convenient to maintain and upgrade the equipment. If the material-collecting track 211 is worn or damaged, it can be replaced or repaired alone without affecting other parts of the material-collecting mechanism 212. Similarly, the upgrade of the drive device, gripping device or control system of the material-collecting mechanism 212 can also be carried out without affecting the material-collecting track 211, reducing the difficulty and cost of maintenance and upgrading. This modular design also facilitates the flexible adjustment and optimization of the lower mold material tray shifting device 210 according to changes in production needs, thereby improving the adaptability and scalability of the equipment.

[0070] In some examples, such as Figure 5 As shown, in order to achieve more accurate, efficient and stable injection operation, the injection module 310 is designed in detail. The injection module 310 includes an injection track 311, an injection traverse member 312, an injection lift member 313, an injection injection machine 314, a liquid tank 316, a peristaltic pump 318 and a temperature sensor 319.

[0071] The injection track 311 is arranged above the injection station 300 and is usually made of a high-precision linear guide rail. It provides a moving path for the injection traverse member 312 to ensure that the injection traverse member 312 can move smoothly and accurately along the track. The length of the injection track 311 is designed according to the actual needs of the injection station 300 and the moving range of the injection injection machine 314, and generally covers the area of ​​the suction position 317 above the liquid tank 316 and the injection area above the lower mold 202.

[0072] The injection lateral moving member 312 is movably arranged on the injection track 311 (for example, the injection lateral moving member 312 is a slider structure), and realizes lateral movement by cooperating with the injection track 311. A driving device, such as a ball screw driven by a motor or a linear motor, is installed inside the injection lateral moving member 312 to provide power to move it on the injection track 311. When the liquid needs to be sucked, the driving device drives the injection lateral moving member 312 to move along the injection track 311 to the liquid suction position 317 above the liquid tank 316; when liquid injection is required, the injection lateral moving member 312 can be moved to a suitable position above the lower mold 202.

[0073] The injection lifting member 313 is set on the injection transverse moving member 312 for lifting and lowering, and generally adopts an electric push rod, a cylinder or a screw lifter to realize the lifting function. When the injection transverse moving member 312 moves to the top of the lower mold 202, the injection lifting member 313 drives the injection type injection machine 314 to descend according to the height of the lower mold 202 and the injection requirements, so that the injection head 315 approaches the injection port of the lower mold 202. After the injection is completed, the injection lifting member 313 lifts the injection type injection machine 314 again to prevent the injection head 315 from colliding with the lower mold 202.

[0074] The injection type liquid injection machine 314 is arranged on the liquid injection lifting member 313. It is one of the core components of the liquid injection module 310 and is equipped with a plurality of injection heads 315 arranged in sequence. The number and spacing of these injection heads 315 are designed according to the shape of the lower mold 202 and the liquid injection requirements to ensure that the liquid can be uniformly and accurately injected into the lower mold 202 at different positions. For example, for a circular lower mold 202, the injection heads 315 may be arranged in a circle; for a rectangular lower mold 202, the injection heads 315 may be arranged in rows and columns. The injection type liquid injection machine 314 realizes accurate liquid injection of the lower mold 202 by working in coordination with the liquid injection transverse moving member 312 and the liquid injection lifting member 313. When the injection type liquid injection machine 314 moves to the liquid suction position 317 above the liquid tank 316, the injection head 315 can absorb the liquid; when it moves to the upper part of the lower mold 202, the injection head 315 injects the liquid into the lower mold 202.

[0075] The liquid tank 316 is arranged below the liquid injection track 311 and on one side of the injection liquid injection machine 314, and has a plurality of liquid suction positions 317 arranged in sequence. The liquid tank 316 is used to store the liquid required for contact lens production, and its material is usually corrosion-resistant stainless steel or plastic to prevent the liquid from chemically reacting with the tank. The number of liquid suction positions 317 matches the number of injection heads 315 of the injection liquid injection machine 314, and the positions correspond to ensure that the injection heads 315 can accurately absorb the liquid. The liquid tank 316 can ensure the uniform distribution of the liquid and avoid precipitation or stratification. For example, a stirring device may be provided inside the liquid tank 316 to stir the liquid regularly without affecting the performance of the liquid to maintain the uniformity of the liquid.

[0076] The peristaltic pump 318 is used to supply liquid to the liquid suction level 317. It delivers liquid by squeezing an elastic hose, and has the advantages of high precision, no pollution, and adjustable flow. The flow of the peristaltic pump 318 can be accurately adjusted according to production requirements. One end of the peristaltic pump 318 is connected to the liquid storage tank, and the other end is connected to the liquid suction level 317 of the liquid tank 316. According to the set flow rate and time interval, the liquid is accurately delivered to the liquid suction level 317 to ensure that the liquid level is constant, so as to ensure that the injection injection machine 314 absorbs the liquid at the same insertion depth each time.

[0077] The temperature sensor 319 is arranged on the liquid tank 316, and is used to monitor the temperature of the liquid in the liquid tank 316 in real time. The temperature has an important influence on the performance of the contact lens liquid and the effect of the liquid injection. For example, if the temperature is too high or too low, the viscosity of the liquid may change, thereby affecting the uniformity of the liquid injection and the quality of the final product. The temperature sensor 319 feeds back the real-time monitored temperature data to the control system, and the control system adjusts the heating or cooling device of the liquid tank 316 according to the preset temperature range to ensure that the liquid is always kept within the appropriate temperature range. For example, for a certain contact lens liquid, the temperature range may be set within a certain range. Through the coordinated work of the temperature sensor 319 and the control system, the liquid temperature is stabilized within this range, thereby improving the liquid injection quality and product stability.

[0078] The design of the injection module 310 is based on the principles of precise injection and liquid control. The injection track 311, the injection transverse member 312 and the injection lifting member 313 work together to provide the injection injection machine 314 with precise three-dimensional movement capabilities, so that it can accurately locate the suction position 317 of the liquid tank 316 to absorb the liquid, and move to the top of the lower mold 202 for injection. The liquid tank 316 stores the liquid, and the peristaltic pump 318 supplies the liquid in a quantitative manner to ensure the continuous supply of the liquid and the stability of the liquid level. The temperature sensor 319 monitors the liquid temperature in real time, and adjusts the liquid temperature through the control system to ensure the stability of the liquid performance. This design makes the injection process more accurate and efficient, and improves the consistency and stability of product quality.

[0079] The high-precision injection head 315 of the injection-type liquid injection machine 314 and its precise cooperation with the liquid injection traverse member 312 and the liquid injection lifting member 313 can control the error of the liquid injection amount within a very small range, ensuring that each lower mold 202 can obtain an accurate and consistent amount of liquid injection. This greatly improves the consistency of the product, reduces product quality problems caused by differences in liquid injection amount, such as uneven lens thickness, inconsistent optical performance, etc., and improves the product yield.

[0080] The high-precision movement control of the injection track 311, the injection transverse movement member 312 and the injection lifting member 313 enables the injection head 315 to be accurately aligned with the injection port of the lower mold 202, further improving the accuracy of injection and avoiding waste of liquid or product defects caused by injection position deviation.

[0081] The reasonable arrangement of multiple injection heads 315 and their coordinated work can simultaneously inject liquid into different positions of the lower mold 202, ensuring that the liquid is more evenly distributed in the mold, reducing lens deformation, bubbles and other problems caused by uneven liquid injection, and improving the molding quality of the product. The stirring device and reasonable structural design inside the liquid tank 316, as well as the quantitative feeding of the peristaltic pump 318, ensure the uniformity of the liquid, so that the composition and performance of each injection are consistent, further improving the uniformity of the injection and the stability of the product quality.

[0082] The automated operation and efficient injection process of the injection module 310 reduce the time and labor cost required for manual injection. The injection injection machine 314 can quickly and accurately complete the injection operation, and the rapid movement of the injection transverse moving member 312 and the injection lifting member 313 also shortens the injection cycle, allowing the equipment to process more lower molds 202 per unit time, thereby improving production efficiency.

[0083] The continuous quantitative feeding of the peristaltic pump 318 and the reasonable design of the liquid tank 316 ensure the continuity of the injection process, reduce the production downtime caused by the interruption of the liquid supply, and further improve the production efficiency.

[0084] In some examples, such as Figure 6 As shown, in order to further optimize the upper mold supply process and improve its accuracy and efficiency, the upper mold supply device 410 is finely designed. The upper mold supply device 410 includes an upper mold supply track 411, a first suction module 412 and a second suction module 413.

[0085] The upper mold feeding track 411 is set at the upper mold loading station 400, which is the path basis for transferring the upper mold 402. The length and shape of the track are arranged according to the relative positions of the upper mold loading station 400, the upper mold material tray feeding device 420 and the upper mold dust removal device 430. For example, the track may be "L" shaped or straight, ensuring that the first suction module 412 and the second suction module 413 can move smoothly to various key positions along the track. At the same time, high-precision position sensor installation grooves or scale marks are installed on the track to facilitate accurate determination of the position of the suction module and provide a position reference for its accurate docking at each station.

[0086] The first suction module 412 is movably (eg, slidably) disposed on the upper mold supply track 411, and is used to suck the upper mold 402 on the upper mold material tray supply device 420 to the upper mold dust removal device 430. The first suction module 412 may include a driving component, an adsorption component, and a control component.

[0087] The driving component generally adopts a driving mode of a servo motor and a ball screw pair. When the servo motor receives a command from the control system, it accurately controls the rotation angle and speed of the motor, thereby driving the ball screw to rotate, so that the first suction module 412 moves smoothly along the upper mold supply track 411. For example, the encoder of the servo motor can accurately feedback the rotation position of the motor, and the control system adjusts the operating state of the motor in real time according to the feedback signal to ensure the positioning accuracy of the first suction module 412.

[0088] The adsorption component usually adopts a vacuum suction cup or a magnetic suction cup, which is selected according to the material of the upper mold 402. If the upper mold 402 is made of metal, the magnetic suction cup adsorbs the upper mold 402 through electromagnetic force, which is easy to operate and has strong adsorption force; if the upper mold 402 is made of non-metallic material, the vacuum suction cup uses the negative pressure generated by the vacuum pump to adsorb the upper mold 402, which can provide a reliable adsorption effect. The number and layout of the suction cups on the adsorption component are optimized according to the shape and size of the upper mold 402 to ensure that the upper mold 402 can remain stable without tilting or shaking during the adsorption and transfer process. For example, for a larger upper mold 402, multiple suction cups may be evenly distributed for adsorption.

[0089] The control component receives signals from various sensors such as position sensors and adsorption sensors, and accurately controls the actions of the drive component and the adsorption component according to a preset program. When the first material suction module 412 moves to the upper mold material tray supply device 420, the position sensor feeds back a signal to the control component to start the adsorption component to absorb the upper mold 402; then the drive component drives the module to move to the upper mold dust removal device 430, and after being positioned again by the position sensor, the adsorption component is controlled to release the upper mold 402.

[0090] The second suction module 413 is also movably (e.g., slidably) disposed on the upper mold supply rail 411, and is used to suck and deliver the dust-removed upper mold 402 on the upper mold dust removal device 430 to the lower mold 202 in the lower mold material tray 201. Its structure and working principle are similar to those of the first suction module 412, and it may also include a driving component, an adsorption component, and a control component.

[0091] The upper mold supply track 411 provides a stable and precise moving path for the first suction module 412 and the second suction module 413, ensuring the position accuracy of the upper mold 402 during the transfer process. The first suction module 412 and the second suction module 413 achieve high-precision position movement through the driving component, the adsorption component ensures the reliable grasping and transfer of the upper mold 402, and the control component cooperates with the driving component and the adsorption component according to the preset program and the sensor feedback signal to achieve the orderly and precise transfer of the upper mold 402 from the supply tray device to the dust removal device, and then to the lower mold 202, thereby optimizing the upper mold supply process and improving the automation and production efficiency of the entire production process.

[0092] The high-precision processing and position marking of the upper mold supply rail 411, as well as the high-precision drive components and control components of the first suction module 412 and the second suction module 413, make the positioning accuracy of the upper mold 402 extremely high during the transfer process. Whether it is sucking the upper mold 402 from the supply tray device or placing the upper mold 402 on the lower mold 202, the position error can be controlled within a very small range, ensuring that the upper mold 402 and the lower mold 202 are accurately docked, improving the accuracy of mold closing, reducing product quality problems caused by upper mold position deviation, such as lens eccentricity, uneven edges, etc., and improving the product yield. The optimized design of the adsorption component and the reasonable layout of the suction cup according to the shape and size of the upper mold 402 ensure the stability of the posture of the upper mold 402 during the transfer process, and further improve the accuracy and reliability of the upper mold supply.

[0093] The independent arrangement of the first suction module 412 and the second suction module 413 allows the suction, dust removal and placement processes of the upper mold 402 to be carried out in parallel or closely connected, reducing waiting time and improving the overall efficiency of the upper mold supply. For example, after the first suction module 412 delivers the upper mold 402 to the dust removal device, the first suction module 412 can return to suck the next upper mold 402 without waiting for the second suction module 413 to take away the upper mold 402; and in this process, the second suction module 413 can take away the dust-free upper mold 402 and place it in the lower mold 202, shortening the cycle of upper mold supply, thereby improving the efficiency of the entire production process.

[0094] The modular design of the first suction module 412 and the second suction module 413 and the stable driving, adsorption and control technology make the operation of each component highly reliable and easy to maintain. At the same time, the precise monitoring and adjustment of the entire transfer process by the control component can timely discover and correct possible problems, further improving the reliability and stability of the equipment.

[0095] The modular design of the upper mold supply device 410 allows for the convenient replacement or improvement of individual components during production if the equipment needs to be upgraded or optimized without affecting the normal operation of other components. For example, if the transfer speed of the upper mold 402 needs to be increased, the drive component can be upgraded alone; if the shape or size of the upper mold 402 changes, only the suction component needs to be adjusted accordingly.

[0096] This design also facilitates flexible adjustment of the upper die supply process according to different production requirements and product types. For example, different upper die supply sequences or beats can be achieved by modifying the program of the control component, improving the adaptability and scalability of the equipment to meet diverse production needs.

[0097] In some examples, such as Figure 7As shown, in order to optimize the pressing process, some unstable pressure providing methods in the prior art, such as spring force, are abandoned to ensure the improvement of product precision, and the pressing device 510 is designed in a targeted and detailed manner. By adopting the method of cooperating the pressing part 512 with the pressing lifting part 511, the pressing is achieved only by the gravity of the pressing part 512 itself, aiming to achieve an accurate, stable and high-quality pressing effect, thereby improving product quality and production efficiency.

[0098] The pressing lifting member 511 is arranged at the pressing station 500 so as to be movable (e.g., slidable) in a lifting manner. It generally includes a linear guide rail and a driving mechanism. The driving mechanism may be an electric push rod, a hydraulic cylinder, or a pneumatic cylinder, etc., to provide the power required for the pressing lifting member 511 to lift and lower.

[0099] A plurality of pressing parts 512 are specially used for pressing the lower mold 202 equipped with the upper mold 402. These pressing parts 512 are designed to move with the pressing lifting part 511 and to move up and down relative to the pressing lifting part 511.

[0100] Specifically, the pressing part 512 can be designed to be guided and suspended on the pressing lifting part 511. Specifically, a vertical slide rail can be set on the pressing lifting part 511. The pressing part 512 cooperates with the slide rail through a slider, so that the pressing part 512 can freely rise and fall and slide on the slide rail and remain on the pressing lifting part 511. At the same time, when the pressing lifting part 511 is lifted and moved as a whole, the pressing part 512 will also move synchronously with it. When the pressing lifting part 511 moves downward with the pressing part 512, after the pressing part 512 touches the upper mold 402, the pressing lifting part 511 continues to move downward, but the pressing part 512 is pressed on the upper mold 402 to achieve the pressing of the upper mold 402 and the lower mold 202.

[0101] The shape and size of the pressing piece 512 can be designed according to the structural characteristics of the upper mold 402 and the lower mold 202. For example, for a circular mold, the pressing piece 512 can be designed as a circular flat plate with a diameter slightly larger than the outer diameter of the mold. Such a design can ensure that the pressure is evenly distributed on the edge and center of the mold, avoiding quality problems such as deformation and bubbles in the product caused by uneven pressure.

[0102] In the actual pressing process, when the pressing lifting member 511 moves downward, the pressing member 512 follows and moves downward synchronously. Once the pressing member 512 contacts the upper mold 402, it generates a downward pressure on the upper mold 402 by its own gravity. Compared with some complex and potentially unstable pressure application methods, such as the downward pressure method with spring action, this method of pressing down by gravity alone can ensure that the contact lens liquid in the mold fully fills the mold cavity, thereby improving the precision and quality stability of the product.

[0103] The pressing lifting member 511 relies on a high-precision linear guide to ensure the smooth and accurate lifting movement. The driving mechanism provides power to achieve precise control of the pressing height and speed, providing a stable movement basis for the pressing process. Multiple pressing members 512 can move relative to the pressing lifting member 511, so that they can follow the overall movement and move relative to each other. When the pressing member 512 contacts the upper mold 402, it uses its own gravity to press down to achieve a stable and uniform pressing effect, meet the molding process requirements of corneal contact lens products, and improve product quality.

[0104] The stable connection structure and relative motion design between the pressing member 512 and the pressing lifting member 511 ensure the reliability of the pressing process. The pressing member 512 can work stably within the preset range without abnormal movement or separation, reducing the risk of production interruption due to equipment failure and improving the overall reliability of the equipment.

[0105] The quick response and precise control of the pressing lifting member 511 enable the pressing process to be carried out efficiently. Under the premise of ensuring product quality, the pressing speed and stroke can be flexibly adjusted according to production needs, shortening the pressing time of a single product, increasing the production output per unit time, and meeting the needs of large-scale production.

[0106] Multiple pressing parts 512 work simultaneously, and can press multiple molds at one time, further improving production efficiency. For example, in large-scale production equipment, multiple pressing stations are equipped with multiple pressing parts 512 at the same time, which can realize simultaneous pressing of multiple molds, greatly improving production efficiency.

[0107] The driving mechanism of the pressing lifting member 511 is precisely controlled by the control system, and the operator can adjust the pressing speed, stroke and other process parameters conveniently and quickly according to the requirements of different products. For example, for corneal contact lens products of different materials or thicknesses, the pressing process can be quickly adjusted by simply modifying the corresponding parameters in the control system to meet the diverse production needs.

[0108] The number, shape and size of the pressing parts 512 can be flexibly adjusted according to the changes in the mold, which enhances the adaptability of the equipment to different molds and products. If it is necessary to produce corneal contact lenses of different specifications, it is only necessary to replace the corresponding pressing parts 512 and adjust the pressing process parameters accordingly to achieve production conversion, thereby improving the flexibility and scalability of the equipment.

[0109] In this alternative embodiment, the driving mechanism of the pressing lifting member 511 can be designed to be able to drive the pressing lifting member 511 to rise and fall and move laterally, and the pressing members 512 on the lifting member 511 are designed to be arranged in a matrix, with the number being half of the number of lower molds 202 in the lower mold material tray 201 (and also half of the number of upper molds 402 in the lower mold material tray 201).

[0110] During the specific pressing process, the material level 111 on the turntable 110 is rotated to the pressing station 500. When it is detected that the upper mold 402 and the lower mold 202 to be pressed are placed on the lower mold material disk 201 (also arranged in a matrix), the pressing lifting member 511 is driven by the driving mechanism to move laterally, so that the pressing member 512 arranged in the matrix is ​​aligned with the upper mold 402 on the upper half of the lower mold material disk 201, and the pressing lifting member 511 is driven down again, so that the pressing member 512 presses down the upper half of the lower mold material disk 201; thereafter, the pressing lifting member 511 is driven by the driving mechanism to move upward and laterally, so that the pressing lifting member 511 arranged in the matrix is ​​aligned with the upper mold 402 on the other half of the lower mold material disk 201, and the pressing lifting member 511 is driven down again, so that the pressing member 512 presses down the upper mold 402 on the other half of the lower mold material disk 201. Through the lifting and lateral movement design and matrix arrangement design of the pressing part 512, the pressing part 512 can press a larger number of upper molds 402 and lower molds 202, and can also ensure the pressing quality of the product, thereby improving production efficiency while ensuring product quality.

[0111] In some examples, such as Figure 7 As shown, in order to further optimize the pressing process, a vertical hole 513 is set on the pressing lifting member 511, and the pressing member 512 adopts a structure of a rod body 514 and an adjusting weight 515, aiming to achieve precise adjustment of the pressing force, thereby further improving product quality and production flexibility.

[0112] The pressing lifting member 511 is provided with vertical holes 513, which are distributed along the vertical direction of the pressing lifting member 511, and the number of the vertical holes 513 matches the number of the pressing members 512. The inner wall of the vertical hole 513 is precisely processed and has a low roughness to reduce the friction when the rod body 514 slides therein, ensuring that the rod body 514 can slide up and down smoothly in the vertical hole 513. The diameter of the vertical hole 513 is closely matched with the outer diameter of the rod body 514, ensuring the stability of the rod body 514 during the sliding process, preventing shaking or deviation, thereby ensuring that the pressing force can be vertically and accurately transmitted to the upper mold 402.

[0113] The rod body 514 is slidably disposed in the vertical hole 513, and its material is usually selected from high-strength alloy steel. The length of the rod body 514 is designed according to the overall height of the pressing device 510 and the actual pressing requirements, ensuring that during the pressing process, the rod body 514 can not only follow the pressing lifting member 511 to descend to contact the upper mold 402, but also provide sufficient downward pressing stroke under the action of the adjustment weight 515. The surface of the rod body 514 is subjected to wear-resistant treatment, such as chrome plating, to further reduce friction with the inner wall of the vertical hole 513 and extend the service life.

[0114] The upper end and / or the lower end of the rod body 514 are provided with an adjustment weight 515. The adjustment weight 515 is usually a metal block of standard mass, such as an iron block or a lead block, and its mass is graded according to the pressing force required by different products. For example, the adjustment weights 515 of different specifications such as 5g, 10g, and 20g can be prepared. By adding or reducing the adjustment weight 515 on the rod body 514, the downward pressure of the pressing part 512 on the upper mold 402 can be accurately adjusted.

[0115] In actual operation, the operator selects an adjustment weight 515 of appropriate mass and installs it on the upper or lower end of the rod body 514, or installs the adjustment weight 515 on both ends at the same time, according to the specific requirements of the product. When the pressing lifting member 511 drives the pressing member 512 to descend, the rod body 514 or the adjustment weight 515 directly contacts the upper mold 402, and the total gravity of the rod body 514 and the adjustment weight 515 is used to generate a downward pressure on the upper mold 402 to achieve the pressing and forming of the product. For example, for corneal contact lens products made of thicker materials, a greater pressing force is required, and the operator can install multiple heavier adjustment weights 515 on the rod body 514; for products made of thinner materials, the number of adjustment weights 515 is reduced or a lighter adjustment weight 515 is selected to avoid damage to the product due to excessive pressing.

[0116] This design of the pressing device 510 is based on the principle of accurately adjusting the pressing force. The vertical hole 513 of the pressing lifting member 511 provides a stable sliding channel for the rod body 514 of the pressing member 512, ensuring that the pressing force can be transmitted vertically. By setting an adjustment weight 515 on the rod body 514, the total gravity of the pressing member 512 can be flexibly adjusted according to the needs of different products, thereby accurately adjusting the downward pressure on the upper mold 402. This design enables the pressing process to better adapt to the pressing process requirements of different products and improve the consistency and stability of product quality.

[0117] The setting of the adjustment weight 515 enables the pressing force to be precisely adjusted according to the material, thickness and other characteristics of different products. Whether it is a thinner soft corneal contact lens or a thicker hard corneal contact lens, the appropriate pressing force can be obtained by adjusting the mass of the adjustment weight 515, avoiding quality problems such as product deformation and uneven thickness caused by improper pressing force, greatly improving the adaptability of product quality and meeting diversified production needs.

[0118] Precise pressing force adjustment ensures that the contact lens liquid in the mold can evenly fill the mold cavity, further improving the accuracy and quality stability of the product. For example, for some corneal contact lens products that require extremely high thickness accuracy, by fine-tuning the mass of weight 515, the pressing force can be accurately matched to the product requirements, and the thickness error of the produced lenses can be controlled within a very small range, improving the product yield.

[0119] Since the pressing force can be flexibly adjusted by adjusting the weight 515, the same pressing device 510 can be applied to the production of a variety of different specifications and types of corneal contact lens products, and there is no need to design a pressing device for each product separately, which reduces the equipment cost and enhances the versatility and applicability of the equipment. This design enables the equipment to quickly adjust the configuration of the weight 515 to meet the new pressing process requirements when facing product upgrades or new product development, improves the flexibility and response speed of the equipment, and helps enterprises quickly adapt to market changes.

[0120] Precise adjustment of the pressing force reduces product rework or scrapping due to inappropriate pressing force, saves production time and raw material costs, and improves production efficiency. For example, in the past, unstable pressing force may cause some products to be unqualified and need to be re-produced. Now, by accurately adjusting the pressing force, the yield rate of one-time molding is greatly improved, and production efficiency is significantly improved.

[0121] The stable structure of the pressing lifting member 511 and the pressing member 512, as well as the good cooperation between the vertical hole 513 and the rod body 514, ensure the stability of the pressing process. Even in a long-term, high-frequency production process, the pressing force can remain stable, reducing the probability of equipment failure and improving the stability and continuity of production.

[0122] The installation and removal of the adjustment weight 515 is simple and convenient, and the operator can quickly adjust the pressing force according to product requirements. This intuitive and convenient adjustment method reduces the technical threshold of the operator and improves the operating efficiency.

[0123] The structure of the pressing device 510 is relatively simple, and the maintenance and replacement of each component are also relatively easy. For example, when the rod 514 is worn, it can be easily taken out from the vertical hole 513 for replacement; if the adjustment weight 515 is damaged or needs to be updated, it can also be quickly replaced, which reduces the maintenance cost and downtime of the equipment.

[0124] In some examples, such as Figure 7 As shown, in order to ensure the stable installation of the adjusting weight 515 on the rod body 514 and prevent it from loosening and shifting during the pressing process, which would affect the pressing effect and product quality, a through hole 516 and a screw hole 517 are provided on the adjusting weight 515, and a locking screw 518 is screwed into the screw hole 517 to strengthen the connection stability between the adjusting weight 515 and the rod body 514, thereby further improving the reliability of the pressing device 510 and the stability of the product quality.

[0125] The adjusting weight 515 has an axial through hole 516 and a radial screw hole 517. The through hole 516 is located at the center of the adjusting weight 515, and its diameter is equal to the outer diameter of the rod 514, which ensures that the rod 514 can freely pass through the through hole 516 and ensures the coaxiality of the adjusting weight 515 on the rod 514, avoiding the situation where the eccentric installation causes uneven pressing force.

[0126] The screw hole 517 vertically penetrates the radial direction of the adjustment weight 515 and is connected to the through hole 516. The inner diameter of the screw hole 517 matches the outer diameter of the locking screw 518, and the two adopt standard thread specifications to ensure the tightness and reliability of the threaded connection. The number of screw holes 517 can be set according to the size of the adjustment weight 515 and actual needs, generally 1 to 4, evenly distributed in the circumferential direction of the adjustment weight 515, to ensure that the locking force on the adjustment weight 515 is uniform and prevent it from rotating or sliding on the rod body 514.

[0127] The locking screw 518 is threadedly connected to the screw hole 517. After the rod 514 passes through the through hole 516, the locking screw 518 is screwed into the screw hole 517 so that the end of the locking screw 518 is in close contact with the surface of the rod 514. By rotating the locking screw 518, the adjustment weight 515 is firmly fixed on the rod 514 by the friction force of the thread. When tightening the locking screw 518, it is necessary to use a suitable tool, such as a wrench or a screwdriver, and operate according to the specified torque to ensure that the locking force is appropriate. If the locking force is too small, the adjustment weight 515 may loosen during the pressing process; if the locking force is too large, the adjustment weight 515 or the surface of the rod 514 may be damaged.

[0128] For example, in actual operation, for a relatively large adjustment weight 515, multiple locking screws 518 may need to be installed and tightened step by step in order to ensure that the adjustment weight 515 is installed balanced and stable on the rod 514. After the adjustment weight 515 is installed and locked, the pressing member 512 is ready as a whole. Driven by the pressing lifting member 511, the total gravity of the rod 514 and the adjustment weight 515 can be used to apply a stable downward pressure to the upper mold 402 to achieve the pressing and forming of the corneal contact lens product.

[0129] This design is based on the principle of enhancing the stability of the connection between the adjustment weight 515 and the rod body 514. The adjustment weight 515 can be easily installed on the rod body 514 through the perforation 516, and the cooperation between the screw hole 517 and the locking screw 518 provides a reliable locking mechanism. When the locking screw 518 is screwed into the screw hole 517 and contacts the rod body 514, the friction force generated by the thread prevents the adjustment weight 515 from moving axially and circumferentially on the rod body 514, ensuring that during the pressing process, regardless of the size of the pressing force and the vibration situation, the adjustment weight 515 can stably move with the rod body 514, ensuring the stable transmission of the pressing force, thereby improving the reliability of the pressing device 510 and the stability of product quality.

[0130] The threaded connection design between the locking screw 518 and the adjusting weight 515 effectively prevents the adjusting weight 515 from loosening and shifting on the rod 514. During the pressing process, no matter how the pressing speed and pressure change, the adjusting weight 515 can always remain in the predetermined position to ensure the stable output of the pressing force. This greatly improves the stability of the pressing process, avoids the fluctuation of the pressing force caused by the loosening of the adjusting weight 515, and thus prevents the product from having quality problems such as uneven thickness and deformation, thereby improving the molding quality and yield rate of the product.

[0131] The even distribution of the multiple screw holes 517 and the symmetrical installation of the locking screws 518 ensure that the adjustment weight 515 is evenly stressed on the rod 514, further enhancing the stability of the pressing process. Even in high-speed and high-frequency pressing operations, the adjustment weight 515 can work stably with the rod 514 to provide a consistent and reliable pressing force for the product.

[0132] The stable installation method of the adjustment weight 515 reduces the risk of equipment failure caused by the looseness of the adjustment weight 515. In long-term production operation, since the adjustment weight 515 will not accidentally shift or fall off, damage to other parts of the equipment is avoided, the service life of the equipment is extended, and the overall reliability of the equipment is improved. This reduces the number of equipment repairs and downtime, reduces production costs, and improves production efficiency.

[0133] The standardized threaded connection between the locking screw 518 and the adjusting weight 515 makes it easy and convenient to replace the adjusting weight 515 or to maintain the equipment. The operator can quickly remove and install the adjusting weight 515, which improves the efficiency of equipment maintenance and further enhances the reliability and maintainability of the equipment.

[0134] Since the stability of the adjustment weight 515 during the pressing process is guaranteed, the pressure applied to the upper mold 402 during each pressing can be kept consistent. This is crucial for the production of high-precision corneal contact lens products, which can ensure that the quality of each lens is highly consistent and reduce the discreteness of product quality. For example, when mass-producing corneal contact lenses, the thickness error of the product can be controlled within a smaller range, improving the quality consistency and market competitiveness of the product.

[0135] Stable pressing force also helps the contact lens liquid in the mold to fill the mold cavity more evenly, further improving the accuracy and quality stability of the product. This not only improves the optical performance of the product, but also reduces product defects caused by unstable pressing force, such as bubbles and uneven surfaces, providing a strong guarantee for the production of high-quality corneal contact lens products.

[0136] The connection between the adjusting weight 515 and the rod body 514 through the through hole 516 and the screw hole 517 makes it more convenient for the operator to adjust the pressing force. The adjusting weight 515 can be easily replaced or increased or decreased by simply loosening or tightening the locking screw 518, and the pressing force can be adjusted quickly to meet the production requirements of different products. This simple and intuitive operation method reduces the difficulty of the operator's work and improves the operating efficiency.

[0137] Standardized threaded connections and universal tool use allow operators to skillfully install and adjust the adjustment weight 515 without special training. This helps new employees quickly get started, improves the overall work efficiency of the production team, and also reduces the company's costs.

[0138] In some examples, such as Figure 8 As shown, in order to more efficiently and accurately supply the lower mold tray 201 equipped with the lower mold 202 to the lower mold tray moving device 210, the lower mold tray supply device 220 includes a lower mold tray feeding position 221 and a lower mold tray clamp 222.

[0139] The lower mold material tray feeding position 221 is set on one side of the lower mold material tray moving device 210. It is the area for storing the lower mold material tray 201 equipped with the lower mold 202. Multiple lower mold material trays 201 stacked in sequence can be placed, thereby reducing the floor space occupied by the lower mold material tray feeding position 221, and at the same time facilitating the delivery of the next batch of lower mold material trays 201 stacked in sequence.

[0140] The lower mold material tray feeding position 221 can also be provided with a sensor, such as a photoelectric sensor, for detecting whether a lower mold material tray 201 is placed on each layer, and feeding back a signal to the control system so that the control system can grasp the inventory status of the lower mold material tray 201 in real time and correctly arrange the action of the lower mold material tray clamp 222.

[0141] The lower die tray clamp 222 is movable and can be raised and lowered, and is configured to be able to move between the lower die tray feeding position 221 and the lower die tray shifting device 210. The lower die tray clamp 222 includes a driving mechanism, a clamping mechanism and a control mechanism. The driving mechanism enables the lower die tray clamp 222 to move and rise and fall. The moving part usually adopts a combination of a linear guide and a ball screw pair, and is powered by a motor. The motor drives the ball screw to rotate, so that the clamp body connected to the screw nut moves in the horizontal direction along the linear guide, and realizes the position switching from the lower die tray feeding position 221 to the lower die tray shifting device 210. The lifting part can adopt an electric push rod or a cylinder, and a suitable driving method is selected according to actual needs. For example, the electric push rod drives the screw through the motor, so that the push rod performs a linear lifting motion, driving the clamp to rise and fall in the vertical direction to adapt to the stacking position of the lower die tray 201 of different heights.

[0142] The clamping mechanism is the part that directly contacts and grasps the lower mold material plate 201. It is usually composed of one or more pairs of clamping fingers. The shape and size of the clamping fingers are designed according to the edge structure of the lower mold material plate 201 to ensure that the lower mold material plate 201 can be firmly clamped. The clamping action of the clamping fingers is driven by a cylinder or a motor, and the clamping fingers are opened or closed by controlling the action of the cylinder or the motor. For example, when the cylinder is driven, when compressed air is passed into the cylinder, the piston movement drives the clamping fingers to close and clamp the lower mold material plate 201; when the cylinder is exhausted, the clamping fingers open under the action of the reset spring and release the lower mold material plate 201.

[0143] When it is detected that there is a lower mold material tray 201 at the tray delivery position and the lower mold material tray shifting device 210 is ready to receive it, the control mechanism controls the driving mechanism to move the clamping claw to the uppermost end of the lower mold material tray delivery position 221, and then controls the lifting mechanism to descend so that the clamping finger is aligned with the lower mold material tray 201. Next, the control mechanism controls the clamping mechanism to clamp the lower mold material tray 201, and then controls the driving mechanism to move the clamping claw to the upper part of the lower mold material tray shifting device 210, and finally controls the lifting mechanism to descend to transport the lower mold material tray 201 to the lower mold dust removal device 230 for dust removal.

[0144] In an alternative embodiment, a stack of lower mold material trays 202 can be carried on the lower mold material tray feeding position 221, and the feeding position is equipped with a limiting structure, such as a protrusion or a baffle plate set on the edge to prevent the lower mold material tray 201 from shifting or falling during placement or waiting for transfer. In addition, the feeding position can also be provided with a sensor, such as a photoelectric sensor, for detecting the stacking height of the mold material trays 201 and feeding back the signal to the control system so that the control system can grasp the inventory status of the lower mold material trays 201 in real time and correctly arrange the action of the lower mold material tray clamp 222.

[0145] like Figure 8As shown, in this alternative embodiment, the lower die tray feeding position 221 can be designed to be fixed and immovable, or can be designed to be driven to rise and fall. Specifically, the lower die tray feeding device 220 is provided with a tray lifting mechanism 223 and a tray lifting cylinder 224. When it is detected that the lower die tray 201 on the lower die tray feeding position 221 needs to be sent to the lower die dust removal device 230, the control mechanism controls the driving mechanism to move the tray lifting mechanism 223 to the lower die tray feeding position 221, and then controls the tray lifting mechanism 223, the clamping mechanism opens the clamping fingers, and clamps the top one of the stacked lower die trays 201. Next, the control mechanism controls the tray lifting mechanism 223 to rise, the clamping mechanism clamps the lower die tray 201, and finally controls the lifting mechanism to descend, and the lower die tray 201 is transported to the lower die dust removal device 230 for dust removal.

[0146] When the clamping fingers of the clamping mechanism need to clamp the next lower mold material tray 201, the material tray lifting cylinder 224 drives the lower mold material tray feeding position 221 to rise one material tray position, so that the uppermost lower mold material tray 201 can be moved into the action range of the clamping fingers of the clamping mechanism to enable the next lower mold material tray 201 to be clamped.

[0147] In this alternative embodiment, after the lower die tray feeding position 221 is designed to be driven to rise and fall by the tray lifting cylinder 224, the lower die tray clamping jaw 222 only needs to be designed to have a fixed lifting stroke to clamp the lower die tray 201, because the lower die tray feeding position 221 can lift and deliver the lower die tray 201 to the lower side of the lower die tray clamping jaw 222 to reach the action range of the clamping mechanism. The advantage of this design is that the fixed stroke of the lower die tray clamping jaw 222 can be designed to be a shorter moving distance without long-distance movement, which simplifies the action complexity of the lower die tray clamping jaw 222 and shortens the stroke of the lower die tray clamping jaw 222.

[0148] The automated operation of the lower mold tray clamp 222 can quickly and accurately deliver the lower mold tray 201 to the lower mold tray moving device 210. Compared with manual tray delivery, it greatly shortens the tray delivery time, improves the rhythm of the entire production process, and thus improves production efficiency.

[0149] The automated tray delivery process is closely coordinated with other automated processes of the automatic liquid injection and mold clamping equipment to form a continuous production line, reduce the waiting time between processes, and further improve production efficiency. For example, when the lower mold tray moving device 210 completes the transfer of the previous lower mold tray 201, the lower mold tray clamping claw 222 can quickly deliver the new lower mold tray 201 to ensure continuous and stable operation of the equipment.

[0150] The limit design of the lower die tray feeding position 221 and the stable driving and clamping mechanism of the lower die tray clamp 222 ensure the stability of the tray feeding process. During the operation of the equipment, the lower die tray 201 will not shift or fall due to vibration or other factors, reducing the probability of equipment failure and improving the overall stability of the equipment. The automated tray feeding operation reduces manual intervention and avoids damage to the equipment caused by improper manual operation, further enhancing the stability and reliability of the equipment and extending the service life of the equipment.

[0151] In some examples, such as Fig. 9 As shown, in order to achieve orderly supply of the upper mold 402 and recovery of the material tray after taking the upper mold, the upper mold material tray supply device 420 includes an upper mold material tray feeding position 421, an upper mold material tray closing position 422 and an upper mold material tray clamp 423 that can move between the two.

[0152] The upper mold material tray feeding position 421 is arranged at one side of the upper mold supply device 410, and is used to stack and place a plurality of upper mold material trays 401 equipped with upper molds 402. Its structure is similar to the lower mold material tray feeding position, and adopts a multi-layer stacking design, and each layer can be placed with an upper mold material tray 401. Each layer is equipped with a limiting structure, such as a protrusion or a baffle on the edge, to prevent the upper mold material tray 401 from shifting or falling. At the same time, a sensor such as a photoelectric sensor is arranged to detect whether an upper mold material tray 401 is placed on each layer, and the signal is fed back to the control system, so as to grasp the inventory status of the upper mold material tray 401 in real time.

[0153] The upper mold material tray closing position 422 is arranged at the other side of the upper mold supply device 410, and is used to receive the upper mold material tray 401 after taking out the upper mold 402. The closing position also adopts a multi-layer structure, and each layer is also provided with a limit structure and a sensor. When the upper mold material tray 401 after taking out the upper mold 402 is sent back to the tray position, the limit structure ensures that it is accurately in place, and after the sensor detects that the material tray is in place, the feedback signal is sent to the control system for recording.

[0154] The upper mold material tray clamp 423 is movable and lifted between the upper mold material tray feeding position 421 and the upper mold material tray closing position 422, and its moving path passes through the upper mold supply device 410. The clamp is composed of a driving mechanism, a clamping mechanism and a control mechanism. The upper mold material tray supply device 420 is designed based on the principle of orderly material flow and automatic control. The upper mold material tray feeding position 421 and the closing position 422 are responsible for the supply and recovery tasks of the upper mold material tray 401 respectively, and the orderly management and real-time monitoring of materials are realized through the limit structure and the sensor. The driving mechanism of the upper mold material tray clamp 423 ensures accurate position movement and height adjustment, the clamping mechanism realizes reliable grasping and releasing, and the control mechanism coordinates the actions of each part according to the preset program based on the sensor feedback signal, so as to realize the automatic and orderly flow of the upper mold material tray 401 from the feeding position through the upper mold supply device 410 to the closing position, and optimize the production process of the automatic liquid injection and mold clamping equipment.

[0155] The multi-layer stacking design of the upper mold tray feeding position 421 increases the storage capacity of the upper mold tray 401, reduces the number of times the upper mold tray 401 is frequently replenished, and saves time. The automatic operation of the upper mold tray clamp 423 can quickly deliver the upper mold tray 401 to the mold supply device, which greatly shortens the tray delivery time compared to manual operation, speeds up the production rhythm, and improves the overall production efficiency. The setting of the upper mold tray closing position 422 allows the tray to be recovered in time after the upper mold 402 is taken, avoiding the accumulation of trays in the working area, ensuring a clean and orderly production environment, and preparing for the next material supply, further improving the continuity and efficiency of production.

[0156] The limit structure and sensor of the upper die tray feeding position 421 and the closing position 422, as well as the precise drive and positioning system of the upper die tray clamp 423, ensure the position accuracy of the upper die tray 401 during the circulation process. The clamp can accurately grab the upper die tray 401 at the feeding position and place it at the designated position of the die supply device and the closing position as required, avoiding the upper die supply problem caused by the position deviation of the tray and improving the stability of product quality.

[0157] The control mechanism accurately controls the action of the clamping jaws based on the sensor feedback. Each material flow is accurately executed according to the preset program. Even if it is operated for a long time and at a high frequency, it can ensure the consistency of the flow and reduce production interruptions or product quality problems caused by material flow errors. The sensors at the feeding and closing positions provide real-time feedback on the inventory and location information of the upper mold material tray 401. The operator can clearly understand the material situation through the control system, which is convenient for timely replenishment of the upper mold material tray 401 and reasonable planning of production plans. The automatic operation and programmable control of the clamping jaws 423 of the upper mold material tray make it easy to monitor and adjust the material flow. If there is an abnormality in the flow process, the control system will promptly alarm and record data, which is convenient for operators to troubleshoot and maintain equipment, and improve the convenience and efficiency of production management.

[0158] In this alternative embodiment, the upper mold material tray feeding position 421 is similar to the lower mold material tray feeding position 221, and can be designed to be fixed in position and not move, or can be designed to be driven to rise and fall. Specifically, through a tray lifting mechanism 223 and a tray lifting cylinder 224 similar to the lower mold material tray feeding position 221, the lifting and lowering drive of the upper mold material tray clamp 423 and the lifting and lowering drive of the upper mold material tray feeding position 421 can be realized, thereby realizing the fixed stroke of the upper mold material tray clamp 423 designed to be a shorter moving distance without the need for long-distance movement, which simplifies the movement complexity of the upper mold material tray clamp 423 and shortens the stroke of the upper mold material tray clamp 423.

[0159] In some examples, such as Fig.10 As shown, in order to further improve the dust removal effect and ensure that the lower mold 202 reaches a very high cleanliness before entering the subsequent process, the lower mold dust removal device 230 includes a dust suction box 231 that can be raised and lowered and an electrostatic eliminator 232.

[0160] The dust box 231 is lifted and arranged above the moving path of the lower mold material plate clamp 222. The lower mold dust removal device 230 is designed based on the principle of efficient dust collection and static elimination. The dust box 231 adjusts its position through the lifting drive mechanism so that the bottom opening of the dust box 231 maintains a suitable distance from the surface of the lower mold 202, and utilizes the suction force generated by the dust suction fan and the filtering effect of the filtering device to effectively remove the dust on the surface of the lower mold 202. The static eliminator 232 cooperates with the dust box 231 to neutralize the electrostatic charge on the surface of the lower mold 202 by emitting ions, thereby solving the problem of dust being difficult to remove due to electrostatic adsorption, thereby improving the cleanliness of the lower mold 202 and ensuring that the lower mold 202 entering the subsequent process meets the requirements for producing high-quality products.

[0161] In some examples, such as Fig.11 As shown, in order to ensure that the upper mold 402 reaches a high standard of cleaning before being molded with the lower mold 202, the upper mold dust removal device 430 is provided with a dust suction block 431 with a negative pressure dust suction groove 432 and a dust suction pipe 433 connected thereto.

[0162] The dust collecting block 431 is the core component of the upper mold dust removing device 430, and is usually made of a high-density, wear-resistant and well-sealed material, such as engineering plastics or metal alloys. Its shape and size are designed according to the outer contour of the upper mold 402 to ensure that it can fit tightly to the upper mold 402 and achieve efficient dust collection.

[0163] The dust suction block 431 is provided with a number of negative pressure dust suction grooves 432, the number, shape and distribution of which match the upper mold 402. For example, if the upper mold 402 is circular and has a specific convex or concave structure on the surface, the negative pressure dust suction grooves 432 will be distributed around the circumference of the upper mold 402 and the corresponding convex and concave positions, and the shape is adapted thereto to ensure full coverage of the surface of the upper mold 402. The inner wall of the negative pressure dust suction groove 432 is smooth to reduce the adhesion of dust in the groove, and the depth and width of the groove are optimized to ensure sufficient negative pressure space and effective fixation of the upper mold 402.

[0164] When the upper mold 402 is dusted, the upper mold 402 is placed in the negative pressure dust suction groove 432, and the dust suction block 431 forms a relatively sealed space with the surface of the upper mold 402. Air is extracted through the dust suction pipe 433 to generate negative pressure in the negative pressure dust suction groove 432, thereby sucking dust and impurities on the surface of the upper mold 402 into the groove.

[0165] The dust extraction pipe 433 is connected to the negative pressure dust suction groove 432, and is responsible for conveying the dust and air in the negative pressure dust suction groove 432 to the subsequent filtering and processing system. The dust extraction pipe 433 is generally made of a flexible, wear-resistant material with a smooth inner wall, such as rubber or plastic, to ensure efficient dust conveying without affecting the normal operation of the dust suction block 431.

[0166] One end of the dust extraction pipe 433 is tightly connected to the negative pressure dust suction groove 432, and the connection adopts a sealing design to prevent dust leakage. The other end is connected to a dust extraction device, such as an exhaust fan or a vacuum cleaner. The dust extraction device generates a strong suction force to ensure that sufficient negative pressure is formed in the negative pressure dust suction groove 432 to achieve efficient dust collection. At the same time, in order to ensure the stability and reliability of the entire dust collection system, the diameter of the dust extraction pipe 433 is reasonably selected according to the dust collection requirements to ensure that air and dust can pass smoothly and avoid blockage.

[0167] The upper mold dust removal device 430 is designed based on the negative pressure dust suction principle. The dust suction block 431 is closely matched with the upper mold 402 through a specially designed negative pressure dust suction groove 432 to form a relatively sealed space. The dust suction pipe 433 connects the negative pressure dust suction groove 432 and the dust suction device. When the dust suction device is working, negative pressure is generated in the negative pressure dust suction groove 432, and the dust and impurities on the surface of the upper mold 402 are sucked into the groove by the negative pressure, and transported to the subsequent processing system through the dust suction pipe 433, thereby achieving efficient dust removal of the upper mold 402 and ensuring the cleanliness of the upper mold 402 before entering the mold closing process.

[0168] The matching design of the negative pressure dust suction groove 432 and the upper mold 402 ensures that the dust suction block 431 can fit tightly to the surface of the upper mold 402, fully covering the areas where dust may exist. This precise fitting method greatly improves the dust suction effect, and can effectively remove dust and impurities from various parts of the surface of the upper mold 402, including some hard-to-reach corners and gaps. Compared with traditional dust suction methods, the dust removal efficiency is higher.

[0169] Multiple negative pressure suction grooves 432 work simultaneously, increasing the suction area and negative pressure action points, further improving the suction efficiency. In a short time, a large amount of dust on the surface of the upper mold 402 can be sucked away, providing a clean upper mold 402 for the subsequent mold closing process, and reducing product defects caused by dust.

[0170] After being processed by the dust removal system composed of the dust suction block 431 and the dust extraction pipe 433, the dust and impurities on the surface of the upper mold 402 are effectively removed, reducing the risk of dust mixing into the product during the mold closing process. This makes the quality of the produced corneal contact lenses more stable, reduces lens defects, bubbles and other problems caused by upper mold contamination, and improves the product yield. The clean upper mold 402 helps to better fit with the lower mold 202, ensures uniform injection, and improves the molding quality of the product. The produced corneal contact lenses perform better in terms of optical performance, comfort, etc., improving the quality of the product.

[0171] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, which should be included in the scope of the claims of the present disclosure.

Claims

1. An automatic liquid injection and mold closing device for producing corneal contact lenses, characterized in that: The invention comprises a lower die loading station, a liquid injection station (300), an upper die loading station (400), a pressing station (500) and a material unloading station which are sequentially arranged in a circle; and further comprises: A turntable (110), the turntable (110) having a material level (111), the turntable (110) being configured such that when rotating, the material level (111) sequentially passes through the lower die loading station, the liquid injection station (300), the upper die loading station (400), the pressing station (500), and the unloading station.

2. The automatic liquid injection mold clamping equipment according to claim 1, characterized in that: The lower die loading station and the unloading station are the same loading and unloading station (200).

3. The automatic liquid injection mold clamping equipment according to claim 1, characterized in that: Also includes: A lower die material tray moving device (210), the lower die material tray moving device (210) being arranged at the lower die loading station and used for moving the lower die material tray (201) equipped with the lower die (202) to the material position (111); a liquid injection module (310), the liquid injection module (310) being arranged at the liquid injection station (300) and being used for injecting liquid into a lower mold (202) in a lower mold material tray (201) placed on the material level (111); An upper die feeding device (410), the upper die feeding device (410) being arranged at the upper die feeding station (400) and being used for feeding the upper die (402) into the lower die (202) in the lower die material tray (201); A pressing device (510), the pressing device (510) is arranged at the pressing station (500) and is used for pressing the upper mold (402) and the lower mold (202).

4. The automatic liquid injection mold clamping equipment according to claim 1, characterized in that: Also includes: a lower mould material tray supply device (220), the lower mould material tray supply device (220) being arranged on one side of the lower mould material tray shifting device (210) and being used for supplying the lower mould material tray (201) equipped with the lower mould (202) to the lower mould material tray shifting device (210); An upper mould material tray supply device (420), wherein the upper mould material tray supply device (420) is arranged on one side of the upper mould supply device (410) and is used to supply an upper mould (402) to the upper mould supply device (410).

5. The automatic liquid injection mold clamping equipment according to claim 4, characterized in that: Also includes: a lower mould dust removal device (230), the lower mould dust removal device (230) being arranged between the lower mould material tray supply device (220) and the lower mould material tray shifting device (210), and being used for removing dust from the lower mould (202); An upper mold dust removal device (430) is arranged between the upper mold material tray supply device (420) and the upper mold supply device (410) and is used to remove dust from the upper mold (402).

6. The automatic liquid injection mold clamping equipment according to claim 5, characterized in that: in, The moving path of the lower mold material tray moving device (210) is configured to pass through the lower mold material tray supply device (220), the lower mold loading station and the unloading station, and can deliver the lower mold material tray (201) equipped with the lower mold (202) to the material position (111), and can deliver the lower mold material tray (201) loaded with the upper mold (402) and the lower mold (202) that have completed pressing from the material position (111) to the tunnel oven (610).

7. The automatic liquid injection mold clamping equipment according to any one of claims 1 to 6, characterized in that: The liquid injection module (310) comprises: A liquid injection track (311), the liquid injection track (311) being located above the liquid injection station (300); A liquid injection transverse moving member (312), wherein the liquid injection transverse moving member (312) is movably arranged on the liquid injection track (311); A liquid injection lifting member (313), the liquid injection lifting member (313) being arranged on the liquid injection transverse moving member (312) in a manner of lifting and lowering movement; An injection-type liquid injection machine (314), the injection-type liquid injection machine (314) being arranged on the liquid injection lifting member (313) and having a plurality of injection heads (315); a liquid tank (316), the liquid tank (316) being arranged below the liquid injection track (311) and located on one side of the injection liquid injection machine (314), and having a plurality of liquid suction positions (317); the injection liquid injection machine (314) being configured to suck the liquid in the liquid suction positions (317) through the injection head (315); a peristaltic pump (318), the peristaltic pump (318) being used to supply liquid to the liquid suction level (317) to keep the liquid level constant; A temperature sensor (319), wherein the temperature sensor (319) is arranged on the liquid tank (316).

8. The automatic liquid injection mold clamping equipment according to any one of claims 3 to 6, characterized in that: The upper mold supply device (410) comprises: An upper die feeding track (411), wherein the upper die feeding track (411) is located at the upper die feeding station (400); a first material suction module (412), the first material suction module (412) being movably disposed on the upper mold supply track (411) and being configured to be movable so as to suck the upper mold (402) on the upper mold material tray supply device (420) to the upper mold dust removal device (430); A second material suction module (413), the second material suction module (413) is movably arranged on the upper mold supply track (411), and is configured to be able to move to suck the upper mold (402) on the upper mold dust removal device (430) into the lower mold (202) in the lower mold material tray (201).

9. The automatic liquid injection mold clamping equipment according to any one of claims 1 to 6, characterized in that: The pressing device (510) comprises: A pressing lifting member (511), wherein the pressing lifting member (511) is arranged at the pressing station (500); A pressing piece (512) is used to press the lower mold (202) equipped with the upper mold (402). The pressing piece (512) is configured to move following the pressing lifting piece (511) and can be lifted and lowered relative to the pressing lifting piece (511). The pressing piece (512) is configured to be able to press the upper mold (402) downward by gravity.

10. The automatic liquid injection mold clamping equipment according to claim 9, characterized in that: The pressing and lifting member (511) has a vertical hole (513), and the pressing member (512) comprises: A rod body (514), the rod body (514) being movably disposed in the vertical hole (513); An adjusting weight (515) is arranged at the upper end and / or the lower end of the rod body (514); the rod body (514) or the adjusting weight (515) is used to press down the upper mold (402); and the adjusting weight (515) is used to adjust the downward pressure.

11. The automatic liquid injection mold clamping equipment according to claim 10, characterized in that: The adjusting weight (515) has an axial through hole (516) and a radial screw hole (517), and the rod body (514) passes through the through hole (516). The pressing piece (512) further comprises: A locking screw (518), the locking screw (518) being threadedly connected to the screw hole (517) and used for locking the adjustment weight (515).

12. The automatic liquid injection mold clamping equipment according to any one of claims 4 to 6, characterized in that: The lower die material tray supply device (220) comprises: A lower mold material tray feeding position (221), the lower mold material tray feeding position (221) being arranged on one side of the lower mold material tray moving device (210) and being used for stacking a plurality of lower mold material trays (201) equipped with lower molds (202); A lower mold material tray clamp (222), the lower mold material tray clamp (222) being movably and liftably arranged between the lower mold material tray feeding position (221) and the lower mold material tray shifting device (210), the lower mold material tray clamp (222) being configured to clamp the uppermost lower mold material tray (201) on the lower mold material tray feeding position (221) and deliver it to the lower mold material tray shifting device (210).

13. The automatic liquid injection mold clamping equipment according to any one of claims 4 to 6, characterized in that: The upper mold material tray supply device (420) comprises: An upper mold material tray feeding position (421) and an upper mold material tray closing position (422), wherein the upper mold material tray feeding position (421) and the upper mold material tray closing position (422) are respectively arranged on both sides of the upper mold supply device (410), the upper mold material tray feeding position (421) is used to stack a plurality of upper mold material trays (401) equipped with upper molds (402), and the upper mold material tray closing position (422) is used to receive the upper mold material tray (401) after the upper mold (402) has been removed; An upper mold material tray clamp (423), wherein the upper mold material tray clamp (423) is movably and liftably arranged between the upper mold material tray feeding position (421) and the upper mold material tray closing position (422), and the upper mold material tray clamp (423) is configured to have a moving path passing through the upper mold supply device (410) and capable of removing the upper mold (402) from the upper mold supply device (410).

14. The automatic liquid injection mold clamping equipment according to claim 5 or 6, characterized in that: The lower mold dust removal device (230) comprises: A dust collection box (231), the dust collection box (231) being arranged in a lifting manner above the moving path of the lower die material plate clamping claw (222) and being used for dusting the lower die (202); A static eliminator (232), wherein the static eliminator (232) is connected to the dust collection box (231).

15. The automatic liquid injection mold clamping equipment according to claim 5 or 6, characterized in that: The upper mold dust removal device (430) comprises: A dust suction block (431), the dust suction block (431) having a plurality of negative pressure dust suction grooves (432), the negative pressure dust suction grooves (432) being used to place the upper mold (402); A dust extraction pipe (433), wherein the dust extraction pipe (433) is in communication with the negative pressure dust extraction groove (432).

Images