Automatic film taking equipment and method

Abstract

According to one aspect of the disclosure, the invention discloses an automatic lens taking device which is used for taking down a corneal contact lens from an upper mold and comprises an upper mold feeding device, an excess material ring residue removing device, an upper mold pre-extrusion device and an extrusion demolding device which are connected in sequence, and the lens is taken down by the lens taking device, turned over by a tray placing device and placed on a tray receiving device. The material disc material receiving device comprises a material distributing disc position, a lens placing position and a material receiving disc position. On the other hand, the invention discloses an automatic sheet taking method using the automatic sheet taking equipment. According to the technical scheme, the efficiency of lens taking operation is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of corneal contact lens demolding, and in particular, to an automatic lens removal device and method. Background Art

[0002] In the production of contact lenses (such as contact lenses), contact lenses (hereinafter referred to as lenses) are manufactured by combining upper and lower molds. After the contact lenses are baked and cured in the mold, before demolding, the overall structure includes a lower mold, an upper mold, and a lens sandwiched between the lower and upper molds. In the process of removing the lens, the upper and lower molds need to be separated manually or semi-automatically. At this time, the lens will adhere to the curved surface of the upper mold (the whole is called a mold), and then the lens will be removed from the upper mold to complete the operation of removing the lens.

[0003] At present, manual removal and manual placement of corneal contact lenses are mostly used in the process of removing corneal contact lenses. This traditional manual operation method has many disadvantages. On the one hand, during manual operation, the lens frequently contacts the operator's hands or other tools, increasing the risk of scratching the lens. Once scratches appear on the lens surface, it will directly affect the optical performance and user experience of the lens. At the same time, manual operation is also difficult to ensure the absolute cleanliness of the operating environment, which can easily cause the lens surface to be contaminated, reducing the quality and pass rate of the product.

[0004] On the other hand, the efficiency of manual lens removal and plate placement is low and cannot meet the growing market demand. With the continuous expansion of the corneal contact lens market, especially the contact lens market, the requirements for production efficiency are getting higher and higher. The speed and capacity of manual operation are far from meeting the needs of large-scale production. Moreover, manual operation requires a lot of manpower costs. With the continuous increase in labor costs, this undoubtedly increases the production costs of enterprises and reduces their market competitiveness.

[0005] In addition, there are large individual differences in manual operations, and different operators have different operating techniques and proficiency, which makes it difficult to maintain consistent product quality and results in a low yield.

[0006] In summary, the existing equipment and methods for removing corneal contact lenses have obvious deficiencies in terms of quality, efficiency, cost and consistency. There is an urgent need for a more advanced, efficient, stable and highly automated lens removal (removing the lens from the upper mold) equipment to solve the problems of low efficiency of manual lens removal operations, unstable product quality, high cost, etc., and to meet the development needs of the modern corneal contact lens production industry. Summary of the invention

[0007] In order to overcome the above defects, the present invention provides an automatic lens taking device and method, which solves the technical problem of low operating efficiency caused by manual lens taking from the mold in the prior art. According to one aspect, the present invention provides an automatic lens removal device for removing a corneal contact lens from an upper mold, comprising: An upper mold feeding device, used for supplying an upper mold containing a lens; A residual material ring residue removal device, used for receiving and squeezing the upper die to remove the residue remaining in the upper die; An upper mold pre-extrusion device, used for receiving and further extruding the upper mold, so that the lens is initially separated from the upper mold; An extrusion demoulding device, used for receiving and further extruding the upper mold, so that the lens is basically separated from the upper mold; A lens taking device, comprising a first suction nozzle, for taking the lens from the extrusion demoulding device; The plate swing device comprises a second suction nozzle for sucking lenses from the first suction nozzle; the plate swing device also comprises a flipping mechanism for flipping the second suction nozzle 180 degrees; A material tray receiving device, comprising a material tray placing table for carrying the material tray, wherein the material tray placing table can move between a material tray distributing position, a material tray placing position and a material tray receiving position; When the tray placement platform is located at the material distribution tray position, it is used to take out the empty tray; When the tray placement table is located at the lens placement position, it is used to receive lenses from the second suction nozzle; When the material tray is placed at the material receiving tray position, it is used to place a fully loaded material tray.

[0008] Optionally, the tray receiving device further comprises: A transverse movement module, which can drive the tray placement table to move transversely; A vertical movement module is provided, wherein the vertical movement module can drive the tray supporting part of the tray placement table to move vertically.

[0009] Optionally, the tray receiving device further comprises: An empty tray taking platform is located above the material distribution tray, and the empty tray taking platform is used to stack and place empty trays; the empty tray taking platform includes: A tray taking opening is used to enable the tray supporting portion to vertically contact an empty tray; The telescopic member is used to extend laterally into the tray taking opening and support the empty tray.

[0010] Optionally, the tray receiving device further comprises: A fully loaded tray stacking platform is located above the receiving tray position, and is used to stack fully loaded trays; the fully loaded tray stacking platform comprises: A fully loaded tray placement opening is used to allow the tray support portion to pass vertically; A supporting block is elastically swingably arranged on the fully loaded tray stacking platform, and the supporting block has a free end, and the free end of the supporting block is located in the fully loaded tray placement opening, and the free end can be pushed upward by the tray to allow the fully loaded tray to pass through and rebound to be supported under the tray.

[0011] Optionally, it also includes an empty tray limiting rod, which is arranged on the empty tray taking platform, and the empty tray limiting rods are arranged around the tray taking opening.

[0012] Optionally, a fully loaded tray limiting rod is provided on the fully loaded tray stacking platform, and the fully loaded tray limiting rod is provided around the opening for placing the fully loaded tray.

[0013] Optionally, an ion wind rod is further included, which is arranged on one side of the lens placement position and is used to eliminate static electricity on the lens.

[0014] Optionally, it also includes: A mold tray support, wherein the mold tray support is provided with a mold tray placement slot, and the mold tray placement slot has a mold discharge port; A mold tray, used to be placed in the mold tray placement slot, the opening of the mold tray being communicated with the mold discharge port; A vibrator is arranged on the mold tray support.

[0015] Optionally, a heating element is also included for heating the upper die feeding device, the residual material ring residue removing device and the upper die on the upper die pre-extrusion device.

[0016] According to another aspect of the present disclosure, an automatic film taking method using the automatic film taking device is disclosed, comprising the following steps: S1, supplying an upper mold containing a lens; S2, receiving and squeezing the upper die to remove the residue remaining in the upper die; S3, receiving and further squeezing the upper mold to initially separate the lens from the upper mold; S4, receiving and further squeezing the upper mold to make the lens basically detach from the upper mold; S5, sucking the lens through the first suction nozzle; S6, sucking the lens from the first suction nozzle through the second suction nozzle; turning the second suction nozzle 180 degrees; S7, take an empty material tray from the material distribution tray; S8, moving the empty tray to the lens placement position, and receiving the lenses from the second suction nozzle; S9. Place the fully loaded tray on the receiving tray.

[0017] In the present disclosure, after the mold passes through the residual material removal device, the upper mold pre-extrusion device, and the extrusion demoulding device in sequence, the lens is separated from the upper mold, the lens is removed by the film taking device, and the lens is reversed by the plate swinging device and placed in an empty material tray; the material tray takes the empty material tray at the material separation tray position, receives the lens at the lens placement position, and then places it in the material receiving tray position. Compared with traditional manual operations, the manual intervention links are greatly reduced, the labor cost and the product quality differences caused by human factors are reduced, the production efficiency is significantly improved, and the consistency and stability of the products are also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following is a brief introduction to 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 ordinary technicians in this field, other drawings can be obtained based on the content of the exemplary embodiments of the present disclosure and these drawings without creative work. Figure 1 It is a schematic diagram of the three-dimensional structure of the automatic film taking device disclosed in the present invention; Figure 2 It is a schematic diagram of the top view of the automatic film taking device disclosed in the present invention; Figure 3 It is a structural schematic diagram of the mold disclosed in the present invention; Figure 4 It is a structural schematic diagram of the mold tray and the mold tray bracket disclosed in the present invention; Figure 5 It is a schematic diagram of the exploded structure of the mold tray and the mold tray support disclosed in the present invention; Figure 6 It is a structural schematic diagram of the upper mold feeding device disclosed in the present invention; Figure 7 It is a schematic structural diagram of the residual material ring residue removal device disclosed in the present invention; Figure 8 It is a structural schematic diagram of the upper die pre-extrusion device disclosed in the present invention; Fig. 9 It is a schematic structural diagram of the extrusion demoulding device disclosed in the present invention; Fig.10 It is a structural schematic diagram of the slice taking and plate placing device disclosed in the present invention; Fig.11 It is a structural schematic diagram of the material tray receiving device disclosed in the present invention; Fig.12 It is a structural schematic diagram of the empty tray taking station disclosed in the present invention; Fig.13 It is a schematic structural diagram of a fully loaded tray stacking station disclosed in the present invention; Fig.14 The present invention is a flowchart of the automatic film taking method.

[0019] In the figure: 1-frame, 10-upper mold, 11-mold material tray support, 12-mold material tray placement slot, 13-mold discharge port, 14-vibrator, 20-lens, 100-mold material tray, 200-upper mold feeding device, 210-straight vibration track, 220-humidifying component, 300-residue ring residue removal device, 310-residue removal channel entrance, 320-residue removal channel exit, 330-first platform, 340-first turntable, 350-first stopper, 360-residue removal channel, 370-dust suction assembly, 400-upper mold pre-extrusion device, 410-pre-extrusion channel entrance, 420 pre-extrusion channel exit, 430-second platform, 440-second turntable, 450-second stopper, 460-pre-extrusion channel, 490-strip accommodating groove, 500-extrusion demoulding device, 510-moving Clamp, 520-fixed clamp, 530-driving device, 540-extrusion gap, 550-slideway, 560-static removal device, 600-sheet picking and plate swinging device, 610-sheet picking device, 611-first suction nozzle, 620-plate swinging device, 621-second suction nozzle, 622-turning mechanism, 700-tray receiving device, 710-tray placing table, 711-base, 712-vertical mold Group, 713-tray support part, 720-transverse module, 740-empty tray pick-up table, 741-tray pick-up opening, 742-telescopic part, 743-empty tray limit rod, 750-full tray stacking table, 751-full tray placement opening, 752-support block, 753-full tray limit rod, 760-ion wind rod, 800-heating element, 900-mechanical arm, 1000-tray DETAILED DESCRIPTION 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.

[0020] 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".

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] The accompanying drawings are intended only to illustrate embodiments of the present disclosure. Those skilled in the art may derive alternative embodiments from the following description without departing from the spirit and scope of the present disclosure.

[0026] According to one aspect of the present disclosure, an automatic film-taking device is provided. Figure 1 is a schematic diagram of the three-dimensional structure of the automatic film taking device disclosed in the present invention, Figure 2 FIG. 1 is a schematic diagram of the top view of the automatic lens removal device disclosed in the present invention. In the previous process, the corneal contact lens is solidified and formed in a mold formed by an upper mold 10 and a lower mold, and the upper and lower molds are separated. After the separation, the lens 20 is located on the curved surface of the upper mold 10 (such as Figure 3 As shown in Figure 1-Figure 2 As shown, the automatic lens taking device of the present disclosure is configured to automatically take out the lens 20 from the mold (the upper mold 10 containing the lens 20).

[0027] See also Figure 1 and Figure 2 The automatic film taking device disclosed in the present invention comprises an upper die feeding device 200, a residual ring residue removal device 300, an upper die pre-extrusion device 400, an extrusion demoulding device 500, a film taking and plate swinging device 600 and a material tray receiving device 700 which are connected in sequence. The frame 1 is located below the above devices as the base of each device.

[0028] The upper mold feeding device 200 can supply the upper mold 10 (i.e., mold) containing the lens 20 to the residual ring residue removing device 300, and the lens 20 is sequentially squeezed through the residual ring residue removing device 300 to remove the residue, further squeezed through the upper mold pre-extrusion device 400 to make the lens 20 initially separated from the upper mold 10, and further squeezed through the extrusion demoulding device 500 to make the lens 20 basically separated from the upper mold 10. The sheet taking and tray placing device 600 absorbs the lens 20 from the extrusion demoulding device 500 and places it on the tray receiving device 700.

[0029] Alternatively, see Figure 1 and Figure 2 , the upper die feeding device 200, the residual ring residue removal device 300, and the upper die pre-extrusion device 400 are arranged linearly in sequence, and the die passes through each device in sequence. After the die is extruded by the upper die pre-extrusion device 400, it is transferred to the extrusion demoulding device 500 by the robot arm 900 for extrusion demoulding. The extrusion demoulding device 500, the sheet taking and plate swinging device 600, and the tray receiving device 700 are arranged linearly in sequence and arranged on one side of the linearity of the upper die feeding device 200, the residual ring residue removal device 300, and the upper die pre-extrusion device 400. Another set of extrusion demoulding devices 500, sheet taking and plate swinging devices 600, and tray receiving devices 700 can also be arranged on the other side of the linearity of the upper die feeding device 200, the residual ring residue removal device 300, and the upper die pre-extrusion device 400. In this way, the same robot arm 900 can supply upper dies for two sets of extrusion demoulding devices 500 to improve demoulding efficiency.

[0030] Continue to see Figure 2 , the upper die feeding device 200, the residual material ring residue removal device 300, and the upper die pre-extrusion device 400 are all disc-shaped. The upper die feeding device 200 is a vibrating disk and has a straight vibration track 210. The vibrating disk can transport the mold to the straight vibration track 210 in an orderly manner through its own vibration. The straight vibration track 210 is connected to the entrance 310 of the residue removal channel of the residual material ring residue removal device 300. The residue removal channel is composed of a rotatable turntable and a block surrounding the turntable, and the turntable and the block have teeth on the opposite surfaces. The mold is driven forward by the rotating turntable in the channel while being squeezed by the teeth. The debris remaining in the upper die is squeezed out and removed by the dust collection component above the channel.

[0031] The mold from which the residue is removed travels along the channel to the residue removal channel outlet 320, which is connected to the pre-extrusion channel inlet of the upper mold pre-extrusion device 400. The structure of the upper mold pre-extrusion device 400 is similar to that of the residual ring residue removal device 300, except that the position of the extrusion mold is different. Figure 3 The upper mold 10 is positioned further upward.

[0032] After being pre-extruded by the upper mold pre-extrusion device 400, the mold leaves the extrusion channel and gathers in the strip receiving groove 490. After two extrusions, most of the lens 20 is separated from the upper mold 10, and only the central area is adhered to the upper mold curved surface.

[0033] In an optional embodiment, a heating element 800 is provided on the upper mold feeding device 200, the residual material ring residue removal device 300, and the upper mold pre-extrusion device 400. The mold is always heated during the whole process of feeding vibration, residue removal extrusion and pre-extrusion. On the one hand, heating the mold can reduce the hardness of the mold material, making it easier to plastically deform, thereby improving the extrusion effect and precision, and reducing problems such as uneven extrusion or mold damage caused by too hard materials; on the other hand, it increases the deformation of the upper mold when extruding the mold, reduces the attachment area between the upper mold and the lens, and makes it more convenient to remove the lens from the mold; secondly, in the stage of vibrating the loading tray, heating can prevent the mold from generating excessive friction with the surface of the equipment due to too low temperature, affecting the smoothness of loading, and ensuring that the mold can move according to the predetermined trajectory and speed; thirdly, in the residue removal component, heating helps to reduce the bonding force between the residual material residue and the mold surface, making it easier to be removed, and improving the efficiency and quality of residue removal.

[0034] In an optional embodiment, if Figure 1 and Figure 2 As shown, the upper mold feeding device 200 provides molds from the mold tray 100. Figure 4 and Figure 5 As shown, the mold tray 100 is supported by a mold tray support 11, and the mold tray support 11 has a mold tray placement groove 12, and the mold tray placement groove 12 has a mold discharge port 13. Optionally, the mold tray 100 is manually placed in the mold tray placement groove 12 and fixed, and the opening of the mold tray 100 is connected to the mold discharge port 13.

[0035] Optionally, a vibrator 14 is further provided on the mold tray support 11. The mold tray support 11 is tilted downwardly with an opening, and the molds in the mold tray 100 are poured into the upper mold feeding device 200 by the vibration of the vibrator 14. During shutdown, the mold tray support 11 can be adjusted to be horizontal, thereby suspending the supply of molds to the upper mold feeding device 200.

[0036] Optionally, the mold discharge port 13 of the mold tray support 11 is funnel-shaped to ensure that the molds are poured into the central area of ​​the upper mold feeding device 200 .

[0037] Optionally, a switch valve is provided on the mold outlet 13 .

[0038] The upper die feeding device 200, the residual ring residue removal device 300, the upper die pre-extrusion device 400, the extrusion demoulding device 500, the sheet taking and plate swinging device 600 and the material tray receiving device 700 are respectively introduced below. It should be noted that the following are only exemplary optional embodiments, and those skilled in the art can make various changes and modifications based on the inventive concept of the present disclosure.

[0039] Upper die feeding device 200 See also Figure 6 , which shows a schematic diagram of the structure of the upper die feeding device 200. As mentioned above, the main body of the upper die feeding device 200 is a vibrating plate, and a circular vibration plate is arranged below the vibrating plate to transport the dispersed dies in an orderly manner to the residual material ring residue removal device 300. A support frame is arranged below the circular vibration plate, and the support frame is fixed on the frame 1 through a shock-absorbing material.

[0040] A humidifier 220 is arranged on the circumference of the vibration plate to humidify the mold on the vibration plate. Since the mold is usually made of plastic or some polymer materials, static electricity is easily generated in a dry environment, causing the mold to be affected by static electricity adsorption on the vibration plate. Moisture is blown into the vibration plate through the humidifier 220 to reduce the static electricity charge on the mold surface and reduce the static electricity adsorption force between the molds.

[0041] In addition, after the mold is humidified, the possibility of adhesion can be reduced when the lens is removed and placed later, thereby increasing the success rate of collecting the lens.

[0042] Alternatively, if Figure 6 As shown, the humidifying element 220 is a humidifying tube, which surrounds the vibration disk. The humidifying tube is connected to an atomization generating device and has an air outlet for blowing out moisture.

[0043] like Figure 6 As shown, the circle formed by the humidifying pipe has a gap, through which a straight vibration track 210 is provided on the outer side of the vibration plate. After the dispersed molds are vibrated by the circular vibration, they sequentially enter the straight vibration track 210 to be transported to the residue removal channel inlet 310 of the residual material ring residue removal device 300 downstream.

[0044] Residue ring residue removal device 300 See also Figure 7The residual material ring residue removal device 300 includes a first platform 330, a first rotating disk 340 and a first stopper 350. The first rotating disk 340 is rotatably arranged on the first platform 330; the first stopper 350 is arranged on the first platform 330, and the first stopper 350 is located outside the first rotating disk 340. An arc-shaped residue removal channel 360 is formed between the edge of the first rotating disk 340 and the first stopper 350. The width of the arc-shaped residue removal channel 360 is smaller than the diameter of the mold. One end of the arc-shaped residue removal channel 360 is a residue removal channel inlet 310, and the other end is a residue removal channel outlet 320.

[0045] Optionally, the inlet 310 of the residue removal channel receives the mold delivered by the straight vibration track 210, and the mold enters the arc-shaped residue removal channel 360. Since the width of the channel is smaller than the diameter of the mold, the mold is driven to move while the residual material and residue of the mold are removed during the rotation of the first rotating disk 340. While achieving the removal of residue, it also has a certain extrusion effect on the mold.

[0046] Optionally, a dust suction assembly 370 is disposed above the arc-shaped residue removal channel 360 to suck away residual material residues.

[0047] Optionally, an annular first rack is provided on the outer ring of the first rotating disk 340, and an arc-shaped second rack is provided on one side of the first stopper 350; the circle where the first rack is located is horizontally arranged, and the second racks of the plurality of first stoppers 350 gradually increase in height along the rotation direction of the first rotating disk 340. The first rack and the second rack cooperate with the extrusion die, and extrudes the die in a progressively raised manner to remove the residual material residue on the die, and the residual material residue can be sucked away by the dust suction assembly 370.

[0048] Optionally, the spacing between the racks is adjustable to accommodate molds of different sizes.

[0049] Upper die pre-extrusion device 400 See also Figure 8 The upper die pre-extrusion device 400 includes a second platform 430, a second rotating disk 440 and a second stopper 450. The second rotating disk 440 is rotatably disposed on the second platform 430, and the second stopper 450 is disposed on the second platform 430, and the second stopper 450 is located outside the second rotating disk 440. An arc-shaped pre-extrusion channel 460 is formed between the edge of the second rotating disk 440 and the second stopper 450, and the width of the arc-shaped pre-extrusion channel 460 is smaller than the diameter of the die, and one end of the arc-shaped pre-extrusion channel 460 is a pre-extrusion channel inlet 410, and the other end is a pre-extrusion channel outlet 420.

[0050] Optionally, the pre-extrusion channel inlet 410 receives the mold delivered by the residue removal channel outlet 320, and the mold enters the arc-shaped pre-extrusion channel 460. Since the channel width is smaller than the mold diameter, the mold is further extruded during the rotation of the second rotating disk 440. This structural design can accurately control the extrusion process of the mold, and can adapt to the extrusion requirements of different molds by adjusting parameters such as the rotation speed of the second rotating disk 440 and the size of the arc-shaped pre-extrusion channel 460.

[0051] Optionally, the structure of the pre-extrusion channel 460 may be the same as or different from the structure of the residue removal channel 360 .

[0052] Continue to see Figure 8 The upper die pre-extrusion device 400 further includes a strip-shaped receiving groove 490, which is connected to the pre-extrusion channel outlet 420. The strip-shaped receiving groove 490 is used to receive the pre-extruded die. The robot arm 900 can be used to clamp the die in the strip-shaped receiving groove 490 into the extrusion demoulding device 500.

[0053] Extrusion demoulding device 500 See also Fig. 9 The extrusion demoulding device 500 includes a movable clamping plate 510 and a fixed clamping plate 520. The movable clamping plate 510 can be driven by a driving device 530 to approach the fixed clamping plate 520 to extrude the mold. An extrusion gap 540 is formed between the movable clamping plate 510 and the fixed clamping plate 520.

[0054] Optionally, the extrusion demoulding device 500 further includes a slide 550 , which is disposed below the extrusion slit 540 , and the outlet end of the slide is used to communicate with a waste bin. The slide 550 is used to receive the upper mold 10 dropped from the extrusion slit 540 .

[0055] As described above, after two extrusions by the residual ring residue removal device 300 and the upper mold pre-extrusion device 400, most of the lens 20 is separated from the upper mold 10, and only the central area is adhered to the upper mold curved surface. After the mechanical arm 900 clamps the mold located in the strip receiving groove 490 into the extrusion gap 540 of the extrusion demoulding device 500, the driving device 530 drives the movable clamping plate 510 to approach the fixed clamping plate 520 to perform the final extrusion demoulding on the mold, and the lens 20 is basically separated from the upper mold 10. After the lens 20 is taken away by the subsequent film taking and plate swinging device 600, the driving device 530 releases the movable clamping plate 510, and the remaining upper mold 10 will fall from the extrusion gap 540 into the slide 550 and fall into the waste box. Compared with the traditional method of manually collecting upper mold waste, this automatic collection method greatly improves work efficiency and reduces the time and labor intensity of manual operation. At the same time, it avoids the scattering and accumulation of upper mold waste in the working area of ​​the equipment, keeps the working environment clean and safe, and reduces the risk of equipment failure caused by waste accumulation. In addition, the design of the slide also facilitates the centralized management and treatment of upper mold waste, improving the efficiency and standardization of waste treatment.

[0056] Optionally, the extrusion demoulding device 500 further includes a static electricity removal device 560 for removing static electricity from the obtained lens 20 to improve the accuracy of subsequent transfer of the lens 20 .

[0057] Slice removal and plate placement device 600 The lens taking and tray placing device 600 is used to take the lens 20 from the extrusion demoulding device 500 and place it on the target lens material tray 1000. Fig.10 The film taking and plate swinging device 600 includes a film taking device 610 and a plate swinging device 620. The film taking device 610 has a plurality of first suction nozzles 611 adapted to the extrusion gap 540. Optionally, through the existing three-dimensional moving structure, the plurality of first suction nozzles 611 can simultaneously suck a plurality of squeezed and detached lenses 20 from the extrusion gap 540.

[0058] Optionally, the tray swing device 620 includes a plurality of second suction nozzles 621 for sucking the lens 20 from the first suction nozzle 611. Optionally, the tray swing device 620 also includes a flipping mechanism 622 for flipping the second suction nozzle 621 by 180 degrees. The concave surface of the lens sucked by the first suction nozzle 611 is at the bottom, and after being flipped by the second suction nozzle 621, the concave surface is at the top, and the lens is placed in the tray 1000 in this position to prevent the edge of the lens from being worn.

[0059] Optionally, the lens 20 sucked by the first suction nozzle 611 is firstly subjected to the static electricity removal device 560 to remove static electricity, and then sucked by the second suction nozzle 621 to prevent the problem of inaccurate positioning caused by static electricity adsorption.

[0060] Tray receiving device 700 The tray receiving device 700 can receive the lens 20 sucked by the second suction nozzle 621. Fig.11 The tray receiving device 700 includes a tray placement table 710 for carrying the tray 1000. The tray placement table 710 can move between the tray distribution position, the lens placement position and the tray receiving position. When the tray placement table 710 is located at the tray distribution position, it is used to take an empty tray. When the tray placement table 710 is located at the lens placement position, it is used to receive the lens 20 from the second suction nozzle 621. When the tray placement table 710 is located at the lens receiving position, it is used to place a fully loaded tray.

[0061] Optionally, the receiving tray placement platform 710 includes a base 711, a vertical movement module 712, and a tray support portion 713. The tray support portion 713 is disposed on the base 711, and is used to carry the tray 1000, and can be driven to rise and fall by the vertical movement module 712. The tray support portion 713 can be adaptively adjusted according to the size and weight of the tray 1000 to ensure the stability of the tray 1000 during placement and use. By placing the lenses 20 in the tray 1000, the lenses 20 are arranged and stored in an orderly manner, which facilitates the management and handling of the lenses.

[0062] Optionally, the material tray receiving device 700 further includes a transverse movement module 720 for driving the material tray placement platform 710 to move transversely between the material distribution tray position, the lens placement position and the material receiving tray position.

[0063] Optionally, an empty tray fetching platform 740 is provided above the material distribution tray position, and the empty tray fetching platform 740 is used to stack and place empty trays. Optionally, a full tray stacking platform 750 is provided above the material receiving tray position, and the full tray stacking platform 750 is used to stack and place full trays.

[0064] When the tray placement platform 710 reaches the material distribution tray position driven by the lateral movement module 720, the tray support part 713 can be raised and lowered to take the empty tray from the empty tray taking platform 740; when the tray placement platform 710 reaches the lens placement position driven by the lateral movement module 720, the tray support part 713 can be raised and lowered to a suitable position to receive the lens 20 from the second suction nozzle 621; when the tray placement platform 710 reaches the material receiving tray position driven by the lateral movement module 720, the tray support part 713 can be raised and lowered to place the full tray on the full tray stacking platform 750. This cycle is repeated until all the trays 1000 on the empty tray taking platform 740 are taken, and a stack of trays 1000 is manually or mechanically placed on the empty tray taking platform 740.

[0065] Optionally, for the empty tray pick-up station 740, see Fig.11 and Fig.12The empty tray taking platform 740 includes a tray taking opening 741 and a telescopic member 742. The tray taking opening 741 allows the tray supporting portion 713 to vertically contact the bottom of the empty tray; the telescopic member 742 is used to extend horizontally into the tray taking opening 741 and into the slot of the tray 1000 to support the empty tray.

[0066] The empty tray taking platform 740 can neatly stack and place multiple empty trays, saving space. The tray taking opening 741 allows the tray support portion 713 of the tray placement platform 710 to smoothly enter the bottom of the empty tray. When the telescopic member 742 retracts, the tray support portion 713 drops by a tray height, and the telescopic member 742 re-extends into the slot of the tray 1000 to support the empty tray, and the tray support portion 713 can take away the empty tray at the bottom. In this way, the automatic supply of the empty trays at the bottom layer is realized. Compared with manually placing empty trays, this method of automatically supplying empty trays greatly improves work efficiency and reduces the time and labor intensity of manual operation. At the same time, the neat stacking and automatic acquisition of empty trays also ensure the orderly use of empty trays, and improves the automation and stability of the material collection process.

[0067] Optionally, the tray receiving device 700 further includes an empty tray limiting rod 743, which is disposed on the empty tray taking platform 740, and the empty tray limiting rod 743 is disposed around the tray taking opening 741. In this way, the stability and safety of the empty trays during stacking and taking are further enhanced. The empty tray limiting rod 743 can accurately position and limit the empty trays, prevent the empty trays from being offset or tilted during the stacking process, and ensure that the empty trays can be neatly stacked on the empty tray taking platform 740.

[0068] Optionally, for a fully loaded tray stacking station 750, see Fig.11 and Fig.13 , the fully loaded tray stacking platform 750 includes a fully loaded tray placement opening 751 and a supporting block 752. The fully loaded tray placement opening 751 allows the tray supporting portion 713 to pass vertically; the supporting block 752 is elastically swingingly arranged on the fully loaded tray stacking platform 750, and the supporting block 752 has a free end, and the free end is located in the fully loaded tray placement opening 751. The free end can be pushed upward by the tray 1000 to swing and allow the fully loaded tray to pass through and rebound to be supported under the tray 1000. In this way, automatic stacking and stable storage of fully loaded trays are achieved. The fully loaded tray stacking platform 750 can neatly stack multiple fully loaded trays, thereby improving space utilization. Compared with manual stacking, it improves work efficiency and reduces the time and labor intensity of manual operation. At the same time, the neat stacking and automatic stacking functions of the fully loaded trays ensure the orderly management and storage of the fully loaded trays, which is convenient for subsequent handling and processing.

[0069] Optionally, similar to the empty tray taking platform 740, the fully loaded tray stacking platform 750 may also be provided with fully loaded tray limiting rods 753, and fully loaded tray limiting rods 753 are provided around the fully loaded tray placement opening 751. In this way, the fully loaded tray can be accurately positioned and limited to prevent the fully loaded tray from being offset, tilted or falling during the stacking process. The accuracy and reliability of the stacking of fully loaded trays are improved, the stability of the fully loaded trays during the stacking and storage process is ensured, the subsequent handling and management are facilitated, and the equipment failure and production delay caused by the instability of the fully loaded trays are reduced.

[0070] Optionally, the tray receiving device 700 also includes an ion wind rod 760, which is arranged on one side of the lens placement position to eliminate static electricity on the lens 20. During the production process of the lens, static electricity is easily generated on the lens surface due to the influence of various factors. Static electricity will absorb tiny particles such as dust and impurities in the surrounding environment. These particles attached to the surface of the lens will affect the optical performance of the lens and reduce the clarity and quality of the lens. The ion wind rod 760 effectively eliminates static electricity by generating ions with opposite charges, which neutralize the static electricity on the surface of the lens. The ion wind rod is set at the lens placement position to eliminate static electricity in time before the lens is placed on the tray, ensuring the smooth placement of the lens and the cleanliness during subsequent processing.

[0071] According to another aspect of the present disclosure, there is also provided an automatic film taking method using the automatic film taking device, which comprises the following steps.

[0072] S1, supplying an upper mold 10 containing a lens 20; S2, receiving and squeezing the upper mold 10 to remove the residue remaining in the upper mold 10; S3, receiving and further squeezing the upper mold 10, so that the lens 20 is initially separated from the upper mold; S4, receiving and further squeezing the upper mold 10, so that the lens 20 is basically separated from the upper mold 10; S5, sucking the lens 20 through the first suction nozzle 611; S6, suck the lens 20 from the first suction nozzle 611 through the second suction nozzle 621; turn the second suction nozzle 621 180 degrees; S7, take an empty material tray from the material distribution tray; S8, moving the empty tray to the lens placement position, and receiving the lens 20 from the second suction nozzle 621; S9. Place the fully loaded tray on the receiving tray.

[0073] Through the teachings given in the above description and the related drawings, many modifications and other embodiments of the present disclosure given here will be recognized by those skilled in the art of the present disclosure. Therefore, it is to be understood that the embodiments of the present disclosure are not limited to the specific embodiments disclosed, and modifications and other embodiments are intended to be included in the scope of the present disclosure. In addition, although the above description and the related drawings describe the example embodiments in the context of some example combinations of parts and / or functions, it should be appreciated that different combinations of parts and / or functions can be provided by alternative embodiments without departing from the scope of the present disclosure. In this regard, for example, other combinations of parts and / or functions that are different from those clearly described above are also expected to be within the scope of the present disclosure. Although specific terms are used here, they are only used in a general and descriptive sense and are not intended to be limited.

Claims

1. An automatic lens removal device for removing a contact lens from an upper mold, comprising: An upper mold feeding device (200) for supplying an upper mold (10) containing a lens (20); A residual material ring residue removing device (300) is used to receive and squeeze the upper die (10) to remove the residue remaining in the upper die (10); An upper mold pre-extrusion device (400) is used to receive and further extrude the upper mold (10) so as to preliminarily separate the lens (20) from the upper mold (10); An extrusion demoulding device (500) for receiving and further extruding the upper mold (10) so that the lens (20) is substantially separated from the upper mold (10); It is characterized in that Also includes A lens taking device (610), comprising a first suction nozzle (611) for taking the lens (20) from the extrusion demoulding device (500); A plate swinging device (620) comprising a second suction nozzle (621) for sucking a lens (20) from the first suction nozzle (611); the plate swinging device (620) further comprises a flipping mechanism (622) for flipping the second suction nozzle (621) by 180 degrees; A material tray receiving device (700), comprising a material tray placement platform (710) for carrying a material tray (1000), wherein the material tray placement platform (710) is movable between a material distribution tray position, a material placement tray position and a material receiving tray position; The material tray placement platform (710) is used to take out empty material trays when it is located at the material distribution tray position; When the tray placement table (710) is located at the lens placement position, it is used to receive the lens (20) from the second suction nozzle (621); The material tray placement platform (710) is used to place fully loaded material trays when it is located at the material receiving tray position.

2. The automatic film taking device according to claim 1, characterized in that: The material tray receiving device (700) further comprises: A transverse movement module (720), wherein the transverse movement module (720) is capable of driving the tray placement platform (710) to move transversely; A vertical movement module (712), wherein the vertical movement module (712) can drive the tray supporting portion (713) of the tray placement platform (710) to move vertically.

3. The automatic film taking device according to claim 2, characterized in that: The material tray receiving device (700) further comprises: An empty tray taking platform (740) is located above the material distribution tray position, and the empty tray taking platform (740) is used to stack and place empty trays; the empty tray taking platform (740) comprises: A tray taking opening (741) is used to enable the tray supporting portion (713) to vertically contact an empty tray; The telescopic member (742) is used to extend laterally into the tray taking opening (741) and support the empty tray.

4. The automatic film taking device according to claim 2, characterized in that: The material tray receiving device (700) further comprises: A fully loaded tray stacking platform (750) is located above the receiving tray position, and the fully loaded tray stacking platform (750) is used to stack fully loaded trays; the fully loaded tray stacking platform (750) comprises: A fully loaded tray placement opening (751) is used to allow the tray support portion (713) to pass vertically; A support block (752) is elastically swingably arranged on the fully loaded tray stacking platform (750), the support block (752) having a free end, the free end of the support block (752) being located in the fully loaded tray placement opening (751), the free end being able to be pushed upward by the tray (1000) to swing so as to allow the fully loaded tray to pass through and rebound to be supported under the tray (1000).

5. The automatic film taking device according to claim 3, characterized in that: It also includes an empty tray limiting rod (743) which is arranged on the empty tray taking platform (740), and the empty tray limiting rod (743) is arranged around the tray taking opening (741).

6. The automatic film taking device according to claim 4, characterized in that: It also includes a fully loaded tray limiting rod (753) which is arranged on the fully loaded tray stacking platform (750), and the fully loaded tray limiting rod (753) is arranged around the fully loaded tray placement opening (751).

7. The automatic film taking device according to any one of claims 1 to 6, characterized in that: It also includes an ion wind rod (760) which is arranged on one side of the lens placement position and is used to eliminate static electricity on the lens (20).

8. The automatic film taking device according to any one of claims 1 to 6, characterized in that: Also includes: A mold tray support (11), wherein the mold tray support (11) is provided with a mold tray placement groove (12), and the mold tray placement groove (12) is provided with a mold discharge port (13); A mold tray (100) is used to be placed in the mold tray placement groove (12), and the opening of the mold tray (100) is connected to the mold discharge port (13); A vibrator (14) is arranged on the mold tray support (11).

9. The automatic film taking device according to any one of claims 1 to 6, characterized in that: It also includes a heating element (800) for heating the upper die feeding device (200), the residual material ring residue removing device (300) and the upper die (10) on the upper die pre-extrusion device (400).

10. An automatic film taking method using the automatic film taking device according to claim 1, characterized in that: The following steps are involved: S1, supplying an upper mold (10) containing a lens (20); S2, receiving and squeezing the upper mold (10) to remove residues remaining in the upper mold (10); S3, receiving and further squeezing the upper mold (10) so that the lens (20) is initially separated from the upper mold; S4, receiving and further squeezing the upper mold (10) so that the lens (20) is basically separated from the upper mold (10); S5, sucking the lens (20) through the first suction nozzle (611); S6, sucking the lens (20) from the first suction nozzle (611) through the second suction nozzle (621); turning the second suction nozzle (621) 180 degrees; S7, take an empty material tray from the material distribution tray; S8, moving the empty material tray to a lens placement position, and receiving the lens (20) from the second suction nozzle (621); S9. Place the fully loaded tray on the receiving tray.

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