Contact lens color mold transfer printing device

Abstract

The utility model relates to the technical field of contact lens automatic production, in particular to a contact lens color mold transfer printing device. Comprising two pad printing rubber head assemblies, a rubber head micro-motion adjusting mechanism for finely adjusting the pad printing rubber head assemblies, a pad printing mechanical arm for driving the rubber head micro-motion adjusting mechanism to move, an ink scraping mechanism for providing ink for the pad printing rubber head assemblies and a cleaning mechanism. The pad printing rubber head is further provided with an air blowing structure. The air blowing structure blows air to the pad printing rubber head assembly and the ink scraping mechanism so as to control the viscosity of the ink, and the rubber head micro-motion adjusting mechanism performs actions on the pad printing rubber head assembly so as to perform fine adjustment; the position of the tail end rubber head can be adjusted according to needs so as to adapt to glasses color mold transfer printing with different printing requirements of double stations, an air blowing structure is additionally arranged, control over the viscosity of printing ink in the ink dipping process is guaranteed, the quality of transfer printing patterns is improved, the overall structure is exquisite, universality is high, and the contact lens transfer printing quality and efficiency are integrally improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automated production of contact lenses, in particular to a color mold transfer printing device for contact lenses. Background Art

[0002] Colored contact lenses (cosmetic lenses) have patterns of various colors set on their iris. During the manufacturing process, there are usually many methods for printing patterns on colored glasses, among which color mold (color mold) pad printing is a commonly used method;

[0003] Although the existing technology provides ideas and structural solutions for robot pad printing, there are still some deficiencies in the details: 1. The overall single-pad pad printing is adopted, and the pad printing pad is fixedly connected, its production speed is slow, and its adaptability to the concave molds of multiple working positions is poor; 2. The viscosity of the ink in the conventional pad printing operation is too low, which affects the ink dipping and subsequent printing effects, and the overall pad printing effect is poor. Utility Model Content

[0004] The utility model aims to provide a contact lens color mold transfer printing device which is automated, has flexible fine adjustment of double-station glue heads, and can control the viscosity of ink.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] A contact lens color mold pad printing device, comprising two pad printing rubber head assemblies, a pad head fine-motion adjustment mechanism for fine-tuning the pad printing rubber head assemblies, a pad printing robot for driving the pad printing robot to move, a guide camera for obtaining position information of the pad printing robot execution end, an ink scraping mechanism for providing ink to the pad printing rubber head assemblies, and a cleaning mechanism; the pad printing rubber head is also provided with an air blowing structure;

[0007] During pad printing, the guiding camera guides and positions the pad printing robot, and the pad printing robot drives the pad head fine-motion adjustment mechanism and the pad printing rubber head assembly installed at the end of the pad head fine-motion adjustment mechanism to work. The pad head fine-motion adjustment mechanism fine-tunes the action of the pad printing rubber head assembly; the ink scraping mechanism provides ink for the pad printing action of the pad printing rubber head assembly, and the air blowing structure blows air to the pad printing rubber head assembly and the ink scraping mechanism to control the viscosity of the ink; after a single pad printing is completed, the cleaning mechanism cleans the pad printing rubber head assembly.

[0008] Furthermore, each of the pad printing rubber head components includes a rubber head sensor installed on the rubber head fine-motion adjustment mechanism, a rubber head fixing seat arranged at the end of the rubber head sensor, and a pad printing rubber head installed at the end of the rubber head fixing seat;

[0009] Furthermore, the air blowing structure comprises an air blowing ring arranged on the rubber head fixing seat and located at the upper edge of the pad printing rubber head; a plurality of air blowing holes are opened on the lower end surface of the air blowing ring; the upper ends of the plurality of air blowing holes are connected and connected to an external air source by an air blowing valve;

[0010] Furthermore, the guiding camera is a dual-camera layout, one of which is located above the ink scraping mechanism, and the other is located above the color mold to be printed;

[0011] Furthermore, the pad printing robot is connected with a pad printing frame and a pad head micro-adjustment mechanism;

[0012] Furthermore, the pad fine-motion adjustment mechanism includes a height fine-adjustment slide vertically mounted on the pad printing frame, a first translation slide horizontally mounted on the pad printing frame, and a second translation slide mounted on the execution end of the first translation slide; the execution ends of the second translation slide and the height fine-adjustment slide are each mounted with a pad printing pad assembly;

[0013] Furthermore, the height fine-adjustment slide, the first translation slide and the second translation slide are all electric slides;

[0014] Furthermore, the pad printing robot is a high-precision Scara robot;

[0015] Furthermore, the cleaning mechanism is arranged on the side of the ink scraping mechanism;

[0016] Furthermore, the ink scraping mechanism includes a pad printing steel plate, a base plate mounting seat for mounting the pad printing steel plate, a pad printing ink cartridge which is in sliding contact with the pad printing steel plate and has a scraper at the bottom, and an ink cartridge driving cylinder for driving the pad printing ink cartridge to reciprocate;

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] In actual applications, the pad printing robot drives the pad printing rubber head assembly to perform the main actions. During the pad printing process, the ink scraper mechanism prepares the ink for the pad printing operation, and the pad printing rubber head assembly is driven by the pad printing robot to the top of the ink scraper mechanism for ink dipping. During the dipping process, the air blowing structure can blow air to the ink scraper mechanism and the pad printing rubber head assembly. The air blowing can take away the moisture of the ink and thus adjust the ink viscosity. After dipping the ink, the pad printing of the color mold to be printed is carried out. During the pad printing operation, the rubber head micro-adjustment mechanism can fine-tune the position and height of the two pad printing rubber head assemblies. After a single pad printing is completed, the rubber head is cleaned on the cleaning mechanism; and then the pad printing work cycle of the next color mold to be printed is carried out.

[0019] The contact lens color mold pad printing device has an end rubber head position that can be adjusted as needed to adapt to the color mold pad printing of glasses with different printing requirements in the double-station. The added air blowing structure ensures the control of ink viscosity during the ink dipping process and improves the pattern writing quality. The overall structure is sophisticated and has strong versatility, which improves the contact lens pad printing quality and efficiency as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the micro-adjustment mechanism of the rubber head of the utility model;

[0022] Figure 3 This is a cross-sectional view of the structure of the pad printing rubber head assembly of the utility model. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] refer to Figure 1-3 As shown, a contact lens color mold pad printing device includes two pad printing rubber head components 232, a pad head fine adjustment mechanism 233 for fine-tuning the pad printing rubber head components 232, a pad printing robot 231 for driving the pad head fine adjustment mechanism 233 to move, a guide camera 236 for obtaining the position information of the execution end of the pad printing robot 231, an ink scraping mechanism 235 for providing ink to the pad printing rubber head components 232, and a cleaning mechanism 234; the pad printing rubber head components 232 are also provided with an air blowing structure; during the pad printing operation, the pad printing robot 231 drives the rubber head fine-motion adjustment mechanism 233 and the pad printing rubber head assembly 232 installed at the end of the rubber head fine-motion adjustment mechanism 233 to work, and the rubber head fine-motion adjustment mechanism 233 fine-tunes the action performed by the pad printing rubber head assembly 232; the ink scraping mechanism 235 provides ink for the pad printing action of the pad printing rubber head assembly 232, and the air blowing structure blows air to the pad printing rubber head assembly 232 and the ink scraping mechanism 235 to control the viscosity of the ink; after a single pad printing is completed, the cleaning mechanism 234 cleans the pad printing rubber head assembly 232.

[0025] In actual application, the pad printing robot 231 drives the pad printing rubber head assembly 232 to perform the main action. During the pad printing process, the ink scraping mechanism 235 prepares the ink for the pad printing operation, and the pad printing rubber head assembly 232 is driven by the pad printing robot 231 to the top of the ink scraping mechanism 235 to dip the ink; during the dipping process, the air blowing structure can blow air to the ink scraping mechanism 235 and the pad printing rubber head assembly 232, and the air blowing can volatilize the water in the ink, so as to adjust and control the viscosity of the ink; after dipping the ink, the pad printing of the color mold to be printed is carried out; guide the camera The camera 236 is used to capture images of the execution end of the pad printing robot 231 to obtain image information during the ink dipping and pad printing process. The control host processes and feeds back the image information, and further outputs a control signal to the pad head fine-motion adjustment mechanism 233. The pad head fine-motion adjustment mechanism 233 combines with the pad printing robot 231 to further fine-tune the position and height of the two pad printing rubber head assemblies 232. After a single pad printing is completed, the cleaning mechanism 234 cleans the pad printing rubber head assembly 232; and then the next pad printing work cycle for the next color mold to be printed is carried out.

[0026] The contact lens color mold pad printing device uses a guiding camera 236 to obtain position information in real time, perform visual guidance, and accurately control the double-station pad printing rubber head assembly 232 and fine-tune the printing color position; in order to adapt to the color mold pad printing of glasses with different printing requirements, an additional air blowing structure is added to control the viscosity of the ink during the ink dipping process, improve the quality of pattern writing, the overall structure is sophisticated, and the versatility is strong, which overall improves the contact lens pad printing quality and efficiency.

[0027] In this embodiment, each of the pad printing rubber head components 232 includes a rubber head sensor 2324 installed on the rubber head fine-motion adjustment mechanism 233, a rubber head fixing seat 2325 arranged at the end of the rubber head sensor 2324, and a pad printing rubber head 2321 installed at the end of the rubber head fixing seat 2325;

[0028] In this embodiment, the air blowing structure includes an air blowing ring 2322 disposed on the rubber head fixing seat 2325 and located on the upper edge of the pad printing rubber head 2321; a plurality of air blowing holes 2323 are formed on the lower end surface of the air blowing ring 2322; the upper ends of the plurality of air blowing holes 2323 are connected and connected to an external air source by an air blowing valve 2326;

[0029] The pad head sensor 2324 is a tensile pressure sensor, which can collect the pad printing pressure applied by the pad printing pad during operation, which helps to improve the transfer quality and display effect of the pattern; the air blowing ring 2322 is connected to the external air source through the air blowing valve 2326, and the air is supplied by the external air source. During the ink dipping process, the external gas is blown out through the air blowing hole 2323 to control the volatilization of water in the ink scraping mechanism 235 and the pad printing pad 2321, and appropriately adjust the ink viscosity, thereby improving the quality of pad printing.

[0030] In this embodiment, the guiding camera 236 is a dual-camera layout, one of which is located above the ink scraping mechanism 235, and the other is located above the color mold to be printed; the guiding camera 236 with a dual-camera layout can more accurately obtain the position information of the execution end of the pad printing robot 231, ensuring the accuracy of the movement of the pad printing robot 231 during the ink dipping process and the printing process; and through the auxiliary positioning and guidance of the guiding camera 236, the difficulty of adjusting and debugging the double-station pad printing rubber head assembly 232 at the execution end of the pad printing robot 231 is further reduced.

[0031] In this embodiment, the pad printing robot 231 is connected to the pad printing frame 2311 with the pad head fine-motion adjustment mechanism 233, and the pad head fine-motion adjustment mechanism 233 includes a height fine-adjustment slide 2331 vertically installed on the pad printing frame 2311, a first translation slide 2332 horizontally installed on the pad printing frame 2311, and a second translation slide 2333 installed at the execution end of the first translation slide 2332; the execution ends of the second translation slide 2333 and the height fine-adjustment slide 2331 are each installed with a pad printing pad head assembly 232; the pad head fine-motion adjustment mechanism 233 cooperates with the pad printing robot 231 to realize the pad printing pad Double-station control of the component 232; the specific pad printing robot 231 can adjust and control the overall position of the two pad printing rubber head components 232 and the downward pressure stroke during the pad printing operation; and adjust the relative position between the two pad printing rubber head components 232 through the second translation slide 2333 at the execution end of the first translation slide 2332, and adjust the relative height between the two pad printing rubber head components 232 through the height fine-tuning slide 2331; thereby achieving adaptation to the printing effects of various patterns; for the need for double-station operation, it is only necessary to control the height position of one of the horizontal position pad printing rubber head components 232 and the other.

[0032] In this embodiment, the height fine-tuning slide 2331 , the first translation slide 2332 and the second translation slide 2333 are all electric slides; and the pad printing robot 231 is a high-precision Scara robot.

[0033] In this embodiment, the ink scraping mechanism includes a pad printing steel plate 2353, a bottom plate mounting seat 2353 for mounting the pad printing steel plate 2353, a pad printing ink cartridge 2352 that is in sliding contact with the pad printing steel plate 2353 and has a scraper at the bottom, and an ink cartridge driving cylinder 2351 that drives the pad printing ink cartridge 2352 to reciprocate; the ink driving cylinder 2351 is a reciprocating cylinder, and the pad printing ink cartridge 2352 can be driven to reciprocate on the pad printing steel plate 2353 by the ink driving cylinder 2351. The scraper in the pad printing ink cartridge 2352 can scrape the pad printing steel plate 2353 to ensure that the ink is evenly spread on the pad printing steel plate 2353; the pad printing steel plate 2353 can be quickly replaced on the bottom plate mounting seat 2354 as needed, thereby improving the expandability of the overall pad printing work.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A contact lens color mold transfer printing device, characterized in that: The invention comprises two pad printing rubber head assemblies (232), a rubber head fine-motion adjustment mechanism (233) for fine-tuning the pad printing rubber head assemblies (232), a pad printing robot (231) for driving the rubber head fine-motion adjustment mechanism (233) to move, a guiding camera (236) for acquiring position information of the execution end of the pad printing robot (231), an ink scraping mechanism (235) for providing ink to the pad printing rubber head assemblies (232), and a cleaning mechanism (234); the pad printing rubber head assemblies (232) are also provided with an air blowing structure; During the pad printing operation, the guiding camera (236) guides and positions the pad printing robot (231), and the pad printing robot (231) drives the rubber head fine-motion adjustment mechanism (233) and the pad printing rubber head assembly (232) installed at the end of the rubber head fine-motion adjustment mechanism (233) to work, and the rubber head fine-motion adjustment mechanism (233) fine-adjusts the action performed by the pad printing rubber head assembly (232); the ink scraping mechanism (235) provides ink for the pad printing action of the pad printing rubber head assembly (232), and the air blowing structure blows air to the pad printing rubber head assembly (232) and the ink scraping mechanism (235) to control the viscosity of the ink; after a single pad printing is completed, the cleaning mechanism (234) cleans the pad printing rubber head assembly (232).

2. A contact lens color mold transfer printing device according to claim 1, characterized in that: Each of the pad printing rubber head components (232) comprises a rubber head sensor (2324) mounted on the rubber head fine-motion adjustment mechanism (233), a rubber head fixing seat (2325) arranged at the end of the rubber head sensor (2324), and a pad printing rubber head (2321) mounted at the end of the rubber head fixing seat (2325).

3. A contact lens color mold transfer printing device according to claim 2, characterized in that: The air blowing structure comprises an air blowing ring (2322) which is arranged on a rubber head fixing seat (2325) and located at the upper edge of a pad printing rubber head (2321); a plurality of air blowing holes (2323) are provided on the lower end surface of the air blowing ring (2322); the upper ends of the plurality of air blowing holes (2323) are connected and connected to an external air source through an air blowing valve (2326).

4. A contact lens color mold transfer printing device according to claim 1, characterized in that: The guiding camera (236) is a dual-camera layout, one of which is located above the ink scraping mechanism (235) and the other is located above the color mold to be printed.

5. The contact lens color mold transfer printing device according to claim 1, characterized in that: The pad printing robot (231) is connected to the pad printing connecting frame (2311) and the pad head micro-motion adjustment mechanism (233).

6. A contact lens color mold transfer printing device according to claim 5, characterized in that: The pad head fine-motion adjustment mechanism (233) comprises a height fine-adjustment slide (2331) vertically mounted on the pad printing frame (2311), a first translation slide (2332) horizontally mounted on the pad printing frame (2311), and a second translation slide (2333) mounted on the execution end of the first translation slide (2332); the execution ends of the second translation slide (2333) and the height fine-adjustment slide (2331) are each mounted with a pad printing pad head assembly (232).

7. A contact lens color mold transfer printing device according to claim 6, characterized in that: The height fine-tuning slide (2331), the first translation slide (2332) and the second translation slide (2333) are all electric slides.

8. The contact lens color mold transfer printing device according to claim 1, characterized in that: The pad printing robot (231) is a high-precision Scara robot.

9. The contact lens color mold transfer printing device according to claim 1, characterized in that: The cleaning mechanism (234) is arranged on the side of the ink scraping mechanism (235).

10. The contact lens color mold transfer printing device according to claim 1, characterized in that: The ink scraping mechanism (235) comprises a pad printing steel plate (2353), a bottom plate mounting seat (2354) for mounting the pad printing steel plate (2353), a pad printing ink cartridge (2352) which is in sliding contact with the pad printing steel plate (2353) and has a scraper at the bottom, and an ink cartridge driving cylinder (2351) for driving the pad printing ink cartridge (2352) to reciprocate.

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