Pad printing device and pad printing method suitable for optical glass lenses

Abstract

The present invention discloses a pad printing device and a pad printing method suitable for optical glass lenses, belonging to the field of pad printing devices, comprising a frame and a mounting plate, wherein the mounting plate is arranged on the left side of the frame and is fixedly connected to the frame; a motor, wherein the motor is mounted on the upper surface of the mounting plate; a rotating disk, wherein the rotating disk is fixedly mounted on the upper end of the motor; and a mounting cylinder, wherein the upper and lower ends of the mounting cylinder penetrate the rotating disk. By comparing the image features of two groups of glass lenses collected, unqualified products can be quickly screened out. After the image features of the two groups of glass lenses overlap, the image features of one group of glass lenses are randomly selected and compared one by one with the image features of qualified glass lenses in the storage module, so as to further determine whether the detected glass lenses are qualified glass lenses, and then screen out unqualified glass lenses, thereby avoiding unnecessary pad printing operations, and thus improving the pad printing efficiency of glass lenses.

Description

Technical Field

[0001] The present invention relates to the field of pad printing equipment, and more specifically, to a pad printing equipment and a pad printing method suitable for optical glass lenses. Background Art

[0002] Pad printing equipment is a printing device that uses a soft and deformable silicone rubber head (commonly known as a pad printing rubber head) to transfer the ink on the printing plate to the surface of the product. This equipment is widely used in the printing and decoration of various materials such as plastics, toys, glass, metal, ceramics, electronics, IC packaging, etc.

[0003] Optical glass is a glass material specially used for making optical components. It has excellent light transmittance, heat resistance, mechanical properties and chemical stability. After the production of optical glass products is completed, it is often necessary to use pad printing equipment to print anti-counterfeiting marks on the optical glass products. In addition, pad printing equipment can also be used as part of the coating process to evenly coat the functional coating on the glass surface, such as coating a layer of coating with special functions on the optical glass, such as anti-scratch coating, anti-fingerprint coating, anti-reflection coating, etc.

[0004] Existing pad printing equipment often only has pad printing function, and the optical glass lenses produced have pitting, spots, scratches and broken edges. These defective optical glasses will directly affect the uniform distribution of ink during pad printing, resulting in blurred and unclear pad printing patterns, and even missing printing and ghosting. Scratches and broken edges may cause ink accumulation or loss in these areas, resulting in uneven color and affecting the overall quality of the product. The defects may also reduce the ink adhesion due to uneven surface or damaged material, making it easy to fall off or wear.

[0005] Therefore, before pad printing optical glass lenses, strict quality inspection must be carried out on the lenses. However, the pad printing equipment currently on the market generally lacks the function of automatic quality inspection of lenses before pad printing. When the equipment pad prints on defective lenses, the pad printing head will wear out faster due to repeated contact with the uneven surface, thereby shortening the service life of the equipment, which not only affects production efficiency, but also increases equipment maintenance costs and downtime.

[0006] In view of this, in view of the above-mentioned deficiencies, the present invention improves and optimizes the pad printing equipment in the prior art, and develops a pad printing equipment and a pad printing method suitable for optical glass lenses. Summary of the invention

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to provide a pad printing device and a pad printing method suitable for optical glass lenses, which can realize the rapid screening out of unqualified products by comparing the image features of two groups of glass lenses collected. After the image features of the two groups of glass lenses overlap, the image features of one group of glass lenses are randomly selected and compared one by one with the image features of qualified glass lenses in the storage module to further determine whether the detected glass lenses are qualified glass lenses, and then screen out unqualified glass lenses, thereby avoiding unnecessary pad printing operations, thereby improving the pad printing efficiency of glass lenses.

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A pad printing device suitable for optical glass lenses, comprising:

[0010] A frame and a mounting plate, wherein the mounting plate is arranged on the left side of the frame and is fixedly connected to the frame;

[0011] a motor mounted on an upper surface of the mounting plate;

[0012] A rotating disk, wherein the rotating disk is fixedly mounted on the upper end of the motor;

[0013] An installation tube, wherein the upper and lower ends of the installation tube penetrate the rotating disk, and the installation tubes are arranged in multiple groups, and the multiple groups of the installation tubes are distributed in a ring shape;

[0014] A rotating assembly, the rotating assembly is used to drive the mounting tube to deflect, the rotating assembly includes a first cylinder, and the mounting tube is deflected by controlling the extension and contraction of the first cylinder;

[0015] A detection mechanism, the detection mechanism is used to detect the glass lenses to be pad printed, the detection mechanism includes a detection chamber, the detection chamber is arranged above one of the groups of mounting tubes, an illumination lamp is installed on the inner wall of the detection chamber, a camera is installed on the top of the detection chamber, after each group of glass lenses enters the detection chamber, the image features of one group of glass lenses are obtained by the camera, and then the rotating component drives the mounting tube to deflect, and the camera obtains the image features of another group of glass lenses, and a processing module is also installed outside the detection chamber, the processing module compares the image features of the two groups of glass lenses and outputs the comparison result;

[0016] A material unloading component is installed at the lower end of the rotating disk. The material unloading component includes a barrier sheet, which is arranged at the lower end of the mounting tube. The barrier sheet leaves the mounting tube to realize material unloading to screen the glass lenses.

[0017] The present embodiment describes a pad printing device suitable for optical glass lenses, wherein:

[0018] The detection mechanism also includes a storage module installed outside the detection chamber, and the storage module stores image features of qualified glass lenses. When the processing module finds that the image features of two groups of glass lenses overlap through comparison, the processing module arbitrarily selects the image features of one group of glass lenses and compares them one by one with the image features of qualified glass lenses in the storage module, and outputs the comparison results.

[0019] The pad printing device for optical glass lenses described in this embodiment, wherein the detection mechanism further comprises:

[0020] A cloth curtain is installed at the openings at both ends of the detection room, and the color of the cloth curtain is black.

[0021] The pad printing device for optical glass lenses described in this embodiment, wherein the blanking component further includes:

[0022] An upper blocking ring plate, the upper blocking ring plate being mounted on a side surface of the mounting cylinder, the upper blocking ring plate being arranged above the rotating disk;

[0023] A lower blocking ring plate, the lower blocking ring plate is installed on the side surface of the mounting cylinder near the lower end, and the lower blocking ring plate is arranged below the rotating disk;

[0024] The barrier sheets are arranged in two groups, and the two groups of barrier sheets are in a ring shape when in contact. The barrier sheets are arranged below the lower barrier ring plate, and the barrier sheets are slidably arranged with the lower barrier ring plate;

[0025] An inclined plate, wherein the inclined plate is fixedly mounted on one end of the barrier plate, and the inclined surfaces of two groups of the inclined plates are arranged adjacent to each other;

[0026] An extrusion block, the extrusion block is arranged at one end of the inclined plate, the extrusion block is slidably connected to the lower blocking ring plate, the end of the extrusion block close to the inclined plate is designed with a sharp angle, the sharp corner of the extrusion block can be inserted into the two groups of inclined plates to squeeze the two groups of inclined plates away from each other, and the end of the extrusion block away from the inclined plate is designed to be inclined;

[0027] Limiting posts, the limiting posts are installed at the lower end of the rotating disk, the number of the limiting posts corresponds to the number of the extrusion blocks, and when the extrusion blocks rotate with the lower blocking ring plate, the inclined surface of the extrusion blocks will squeeze the limiting posts;

[0028] A first fixing block, wherein the first fixing block is provided in two groups and is fixedly installed at the lower end of the barrier sheet;

[0029] A first spring, wherein the first spring is disposed between the two sets of first fixing blocks, and both ends of the first spring are fixedly connected to the first fixing blocks;

[0030] A second fixing block, wherein the second fixing block is provided in two groups and is fixedly mounted on the lower end of the barrier sheet;

[0031] A moving rod is fixedly mounted on one group of second fixing blocks, and one end of the moving rod not connected to the second fixing block slides through another group of second fixing blocks.

[0032] The pad printing device for optical glass lenses described in this embodiment, wherein the blanking component further includes:

[0033] a third fixing block, the third fixing block being fixedly mounted on the outer side surface of the mounting tube;

[0034] a second spring, one end of which is fixedly connected to the third fixing block;

[0035] A connecting block is fixedly mounted on an end of the second spring away from the third fixing block, and a lower end of the connecting block is fixedly connected to the rotating disk.

[0036] The pad printing device for optical glass lenses described in this embodiment, wherein the rotating assembly comprises:

[0037] A tooth group, the tooth group is mounted on the side surface of the mounting cylinder;

[0038] a first connecting rod, the first connecting rod being mounted at an output end of the first cylinder;

[0039] The rack is fixedly connected to the upper end of the first connecting rod, and a hole for the rack to move is provided at the lower end of the detection chamber. The rack will mesh with the tooth group when moving.

[0040] The pad printing device for optical glass lenses described in this embodiment includes:

[0041] Extrusion heads, which are installed at the edge of the rotating disk. The number of the extrusion heads corresponds to the number of the installation cylinders, and multiple groups of the extrusion heads are distributed in a ring shape;

[0042] A spring piece, which is mounted on the frame and is made of conductive material;

[0043] Conductive block, the frame is provided with a groove near the spring sheet, the conductive block is installed in the groove, and the extrusion head will squeeze the spring sheet when rotating with the rotating disk, so that the spring sheet contacts the conductive block.

[0044] The pad printing device for optical glass lenses described in this embodiment includes:

[0045] A second cylinder, the second cylinder is mounted on the side surface of the frame near the upper end;

[0046] A moving block, the moving block being mounted at an output end of the second cylinder;

[0047] a third cylinder, the third cylinder being mounted on the moving block;

[0048] A rubber head, the rubber head is installed at the lower end of the third cylinder;

[0049] A second connecting rod, the second connecting rod being fixedly connected to the lower end of the moving block;

[0050] A fixing plate, the fixing plate being fixedly mounted on the lower end of the second connecting rod;

[0051] Ink scrapers, the ink scrapers are arranged in two groups and are fixedly installed below the fixed plate;

[0052] A roller frame, wherein the roller frame is arranged at the right side of the ink scraper;

[0053] An inking roller, the inking roller being rotatably connected to the lower end of the roller frame;

[0054] A third spring, wherein the third spring is fixedly mounted on the upper end of the roller frame, and the upper end of the third spring is fixedly connected to the fixing plate;

[0055] Limiting plates, the limiting plates are provided in two groups, the two groups of limiting plates are respectively provided on both sides of the left side of the roller frame, and the upper ends of the limiting plates are fixedly connected to the fixing plate;

[0056] An ink cartridge, the ink cartridge is arranged below the ink supply roller and is mounted on a frame;

[0057] A template, the template being installed in the ink cartridge;

[0058] A guide block is installed in the ink cartridge at a position close to the template.

[0059] The pad printing device for optical glass lenses described in this embodiment includes:

[0060] A scraper, the scraper being arranged on the right side of the ink scraper;

[0061] The support plates are provided in two groups, and the two groups of support plates are respectively fixedly mounted on the two ends of the scraper, and one end of the support plate is fixedly connected to the roller frame.

[0062] The present invention also provides a pad printing method applicable to the above-mentioned optical glass lens pad printing device, comprising the following steps:

[0063] S1: Glass loading: Take the glass lens manually or by a robotic arm, and place the glass lens in the rotating disk mounting cylinder to complete the loading;

[0064] S2: Testing glass: The rotating disk rotates, and the glass lens enters the testing room for testing to determine whether the glass lens is a qualified glass lens;

[0065] S3: Separating glass: When the glass lenses are judged to be unqualified, the two sets of barrier sheets are opened, and the glass lenses are introduced into the guide tube to screen out the unqualified glass lenses;

[0066] S4: Moving glass: After the qualified glass lens comes from the inspection room, the rubber head is inked on the template, and the inked rubber head then performs pad printing on the qualified glass lens;

[0067] S5: Remove the glass: After the pad printing is completed, the rotating disk is deflected 90°, and the glass lens that has been moved can be removed manually or by a robotic arm.

[0068] Compared with the prior art, the present invention has the following beneficial effects:

[0069] This solution can quickly screen out unqualified products by first comparing the two groups of collected glass lens image features. After the two groups of glass lens image features overlap, the image features of one group of glass lenses are arbitrarily selected to be compared one by one with the image features of qualified glass lenses in the storage module to further determine whether the detected glass lenses are qualified glass lenses, and then screen out unqualified glass lenses, avoiding unnecessary pad printing operations, thereby improving the pad printing efficiency of glass lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0071] Figure 1 This is an appearance view of the overall structure of the present invention;

[0072] Figure 2 It is a structural schematic diagram of the detection chamber of the present invention;

[0073] Figure 3 It is a display diagram of the interior of the detection chamber of the present invention;

[0074] Figure 4 It is a schematic diagram of the structure of the upper end surface of the rotating disk of the present invention;

[0075] Figure 5 For the present invention Figure 4 Magnified view at A in the middle;

[0076] Figure 6 This is a state diagram of the defective glass lens of the present invention before and after deflection;

[0077] Figure 7 A schematic diagram showing the symmetry of the glass lens of the present invention;

[0078] Figure 8 It is a structural schematic diagram of the lower end surface of the rotating disk of the present invention;

[0079] Fig. 9 It is a schematic structural diagram of the lower end surface of the lower blocking ring plate of the present invention;

[0080] Fig.10 This is a schematic diagram of the structure of the installation tube of the present invention;

[0081] Fig.11 A bottom view of the installation tube of the present invention;

[0082] Fig.12 It is a schematic diagram of the structure of the barrier sheet of the present invention;

[0083] Fig.13 It is a structural schematic diagram of the moving block of the present invention;

[0084] Fig.14 For the present invention Fig.13 Magnified view at B in the middle;

[0085] Fig.15 It is a structural schematic diagram of the ink scraper of the present invention;

[0086] Fig.16 It is a structural schematic diagram of the roller frame of the present invention;

[0087] Fig.17 It is a cross-sectional view of the ink cartridge of the present invention.

[0088] Description of the numbers in the figure:

[0089] 1. Frame; 2. Mounting plate; 3. Motor; 4. Rotating plate; 5. Mounting cylinder; 6. Blocking plate; 7. Detection chamber; 8. Camera; 9. Illumination lamp; 10. Support frame; 11. Guide tube; 12. Curtain; 13. First cylinder; 14. First connecting rod; 15. Rack; 16. Upper blocking ring plate; 17. Lower blocking ring plate; 19. Inclined plate; 20. Extrusion block; 21. Limiting column; 22. First fixed block; 23. First spring; 24. Moving rod; 25. Second fixed block; 26. Gear Tooth group; 27, connecting block; 28, second spring; 29, third fixed block; 30, extrusion head; 31, spring; 32, conductive block; 33, second cylinder; 34, moving block; 35, third cylinder; 36, rubber head; 37, second connecting rod; 38, fixed plate; 39, ink scraper; 40, third spring; 41, limit plate; 42, roller frame; 43, inking roller; 44, support plate; 45, scraper; 46, ink cartridge; 47, template; 48, guide block; 49, slide groove; 50, slider. DETAILED DESCRIPTION

[0090] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0091] See also Figures 1 to 17 , a pad printing device suitable for optical glass lenses, comprising a frame 1 and a mounting plate 2, the mounting plate 2 is arranged on the left side of the frame 1, and the mounting plate 2 is fixedly connected to the frame 1; a motor 3, the motor 3 is mounted on the upper surface of the mounting plate 2; a rotating disk 4, the rotating disk 4 is fixedly mounted on the upper end of the motor 3; a mounting cylinder 5, the upper and lower ends of the mounting cylinder 5 pass through the rotating disk 4, and the mounting cylinder 5 is arranged in multiple groups, and the multiple groups of mounting cylinders 5 are distributed in an annular shape; a barrier sheet 6, the barrier sheet 6 is arranged at the lower end of the mounting cylinder 5; a rotating assembly, ... The assembly is used to drive the mounting tube 5 to deflect. The rotating assembly includes a first cylinder 13, through which the mounting tube 5 is deflected by the extension and contraction of the first cylinder 13, a tooth group 26, and the tooth group 26 is installed on the side surface of the mounting tube 5; a first connecting rod 14, and the first connecting rod 14 is installed at the output end of the first cylinder 13; a rack 15, and the rack 15 is fixedly connected to the upper end of the first connecting rod 14. A hole for the rack 15 to move is opened at the lower end of the detection chamber 7, and the rack 15 will be meshed and connected with the tooth group 26 when moving;

[0092] The detection mechanism is used to detect the glass lenses to be pad printed. The detection mechanism includes a detection chamber 7, which is arranged above one group of mounting tubes 5. An irradiation lamp 9 is installed on the inner wall of the detection chamber 7. A camera 8 is installed on the top of the detection chamber 7. After each group of glass lenses enters the detection chamber 7, the image features of one group of glass lenses are obtained by the camera 8, and then the rotating component drives the mounting tube 5 to deflect, and the camera 8 obtains the image features of another group of glass lenses. A processing module is also installed on the outside of the detection chamber 7. The processing module compares the image features of the two groups of glass lenses and outputs the comparison result.

[0093] When in use, first load the material at the leftmost end of the rotating disk 4, and place the glass lens in the mounting tube 5 at the leftmost end of the rotating disk 4 manually or by a mechanical arm. The edge of the glass lens is supported by the barrier sheet 6 and placed in the mounting tube 5, and then the motor 3 drives the rotating disk 4 to rotate 90°. At this time, the mounting tube 5 without the glass lens will also rotate to the previous loading position accordingly, and continue the loading operation. The mounting tube 5 with the glass lens will be transferred into the detection chamber 7, and the camera 8 in the detection chamber 7 will take pictures of the glass lens to obtain a group of image features of the glass lens first, and then the first cylinder 13 will contract, driving the first connecting rod 14 and the rack 15 to move synchronously. The rack 15 will mesh with the tooth group 26 during the movement, thereby driving the tooth group 26 and the mounting tube 5 to rotate and deflect, and at the same time, the glass lens in the mounting tube 5 will also deflect. After the glass lens deflects a certain angle, The angle of body deflection can be set according to actual conditions. After the glass lens is deflected, the camera 8 takes a picture of the glass lens again and obtains another set of image features of the glass lens. Then the processing module processes the two sets of image features of the glass lens and compares the image features of the two sets of glass lenses. If there are defects on the glass lens, such as scratches, bubbles, broken edges, etc., the defects of the glass lens will also rotate when it rotates, and the position of the defects has changed. When the image features of the two sets of glass lenses are compared, if the glass lens is intact, even if the position has changed, the image features of the two sets of glass lenses can completely overlap. The processing module determines that the glass lens in the detection chamber 7 is qualified; if the glass lens has defects, when the comparison is performed, because the positions of the defects in the two sets of image features are different, the image features of the two sets of glass lenses are different and cannot be completely overlapped, then the glass lens in the detection chamber 7 is judged to be unqualified;

[0094] An illumination lamp 9 is installed in the detection room 7. The illumination lamp 9 is tilted to illuminate the glass lens. The illumination lamp 9 can emit blue light, purple light, red light, etc. In this way, when the light is irradiated on the glass lens, the defects on the glass lens will be reflected, and the reflection point of the colored light will be more obvious, so it is easier for the camera 8 to capture the image features of the glass lens more clearly, thereby improving the detection results.

[0095] In some embodiments, a storage module is also installed outside the detection chamber 7, and the storage module stores the image features of qualified glass lenses. When the processing module finds that the image features of two groups of glass lenses overlap through comparison, the processing module arbitrarily selects the image features of one group of glass lenses and compares them one by one with the image features of qualified glass lenses in the storage module, and outputs the comparison results.

[0096] When some defects are symmetrical, even if the glass lens is deflected, the image feature data collected twice by the camera 8 is still the same. When two sets of image features overlap, the processing module arbitrarily selects one set of image features of the glass lens and compares them one by one with the image features of the qualified glass lenses in the storage module. If there is no difference in the comparison result, the glass lens in the detection room 7 is judged to be qualified. If there is a difference in the comparison result, the glass lens in the detection room 7 is judged to be unqualified, thereby further improving the detection result of the glass lens.

[0097] In some embodiments, a cloth curtain 12 is included, and the cloth curtain 12 is installed at the openings at both ends of the detection chamber 7, and the color of the cloth curtain 12 is black.

[0098] The cloth curtain 12 is only connected to the top of the detection chamber 7, and is not connected to the inner wall of the detection chamber 7. This ensures that the glass lens can enter and exit the detection chamber 7. By sealing the detection chamber 7, during detection, external light is prevented from entering the detection chamber 7 and interfering with the results obtained by the camera 8, thereby improving the accuracy of image feature acquisition. The cloth curtain 12 is black in color to prevent the irradiation light 9 from reflecting on the cloth curtain 12 and affecting the results obtained by the camera 8.

[0099] In some embodiments, it includes an upper blocking ring plate 16, which is installed on the side surface of the mounting tube 5, and the upper blocking ring plate 16 is arranged at the upper position of the rotating disk 4; a lower blocking ring plate 17, which is installed on the side surface of the mounting tube 5 near the lower end, and the lower blocking ring plate 17 is arranged at the lower position of the rotating disk 4; the blocking piece 6 is arranged in two groups, and the two groups of blocking pieces 6 are in a ring shape when in contact, and the blocking piece 6 is arranged at the lower position of the lower blocking ring plate 17, and the blocking piece 6 and the lower blocking ring plate 17 are slidingly arranged; an inclined plate 19, the inclined plate 19 is fixedly installed at one end of the blocking piece 6, and the inclined surfaces of the two groups of inclined plates 19 are adjacent to each other; an extrusion block 20, the extrusion block 20 is arranged at one end of the inclined plate 19, the extrusion block 20 is slidably connected to the lower blocking ring plate 17, and the end of the extrusion block 20 close to the inclined plate 19 is designed with a sharp angle, and the sharp corner of the extrusion block 20 can be inserted into the two groups of inclined plates 19 to squeeze the two groups of inclined plates The plates 19 are away from each other, and the end of the extrusion block 20 away from the inclined plate 19 is designed to be inclined; the limiting column 21, the limiting column 21 is installed at the lower end of the rotating disk 4, the number of the limiting columns 21 corresponds to the number of the extrusion blocks 20, and when the extrusion block 20 rotates with the lower blocking ring plate 17, the inclined surface of the extrusion block 20 will squeeze the limiting column 21; the first fixed block 22, the first fixed block 22 is set in two groups, and the first fixed block 22 is fixedly installed at the lower end of the blocking plate 6; the first spring 23, the first spring 23 is set between the two groups of first fixed blocks 22, and the two ends of the first spring 23 are fixedly connected to the first fixed block 22; the second fixed block 25, the second fixed block 25 is set in two groups, and the second fixed block 25 is fixedly installed at the lower end of the blocking plate 6; the moving rod 24, the moving rod 24 is fixedly installed on one group of the second fixed blocks 25, and the end of the moving rod 24 that is not connected to the second fixed block 25 slides through the other group of the second fixed blocks 25.

[0100] By adopting the above technical solution, when it is detected that the glass lens in the detection chamber 7 is unqualified, the first cylinder 13 will continue to contract and drive the installation tube 5 to continue to deflect. When the installation tube 5 is deflected, it will drive the extrusion block 20 to rotate synchronously. Finally, the inclined surface of the extrusion block 20 will contact the limiting column 21. Because the extrusion block 20 and the lower blocking ring plate 17 are connected by the slide groove 49 and the slider 50, the slider 50 is fixed on the extrusion block 20, and the slide groove 49 is provided on the lower blocking ring plate 17. As the installation tube 5 continues to deflect, the extrusion block 20 will squeeze the limiting column 21. At this time, the extrusion block 20 will move along the slide groove 49, and the sharp corner of the extrusion block 20 will enter between the two sets of inclined plates 19. As the squeezing block 20 gradually goes deeper, the two groups of inclined plates 19 will gradually move away from each other, because the inclined plates 19 are also connected to the lower blocking ring plate 17 through the slide groove 49 and the slider 50. The two groups of inclined plates 19 will move along the slide groove 49 when moving away from each other. When the inclined plates 19 move, they will drive the blocking plate 6 to move synchronously. Finally, the blocking plate 6 no longer supports the glass lens above, and the defective glass lens will fall down and fall into the guide tube 11. The guide tube 11 is installed under the rotating disk 4, and the guide tube 11 is fixedly connected to the detection chamber 7 through the support frame 10. A collection box or collection frame can be placed under the guide tube 11 to collect defective glass lenses.

[0101] In addition, when the two groups of inclined plates 19 move away from each other, the first spring 23 will be stretched, and the moving rod 24 will slide in the corresponding second fixed block 25. After the defective glass lens falls from the mounting tube 5, the first cylinder 13 is controlled to return to the initial position, and the first cylinder 13 pushes the rack 15 to move in the opposite direction and return to the initial position. The previously stretched first spring 23 contracts and pulls the two groups of inclined plates 19 closer to each other. At the same time, the extrusion block 20 moves outward from between the two groups of inclined plates 19 and returns to the initial position.

[0102] In some embodiments, it includes a third fixed block 29, which is fixedly mounted on the outer surface of the mounting tube 5; a second spring 28, one end of the second spring 28 is fixedly connected to the third fixed block 29; and a connecting block 27, which is fixedly mounted on one end of the second spring 28 away from the third fixed block 29, and the lower end of the connecting block 27 is fixedly connected to the rotating disk 4.

[0103] In order to prevent the mounting cylinder 5 from deflecting when the rotating disk 4 rotates, causing the rack 15 to be unable to engage with the tooth group 26 when moving back and forth, the invention provides a second spring 28, which can not only ensure the rotation of the mounting cylinder 5, but also prevent the mounting cylinder 5 from deflecting when the rotating disk 4 rotates.

[0104] In some embodiments, it includes an extrusion head 30, which is installed at the edge of the rotating disk 4. The number of extrusion heads 30 corresponds to the number of mounting tubes 5, and multiple groups of extrusion heads 30 are distributed in a ring shape; a spring piece 31, which is installed on the frame 1 and is made of conductive material; a conductive block 32, a groove is provided at a position of the frame 1 close to the spring piece 31, and the conductive block 32 is installed in the groove. When the extrusion head 30 rotates with the rotating disk 4, it will squeeze the spring piece 31 so that the spring piece 31 contacts the conductive block 32.

[0105] In the present invention, when the motor 3 controls the rotating disk 4 to rotate, the extrusion head 30 will squeeze the spring piece 31 to make the spring piece 31 contact with the conductive block 32. The frame 1 is installed with a controller, and the spring piece 31 and the conductive block 32 are electrically connected to the controller. When the spring piece 31 contacts the conductive block 32, the controller receives a signal that the spring piece 31 and the conductive block 32 are closed, and the controller controls the motor 3 to stop rotating. By installing the spring piece 31 and the conductive block 32, the motor 3 can control the deflection angle of the rotating disk 4, thereby avoiding the problem that the motor 3 controls the deflection angle through the program, and the motor 3 loses step when the motor 3 is out of step, causing the deflection angle of the rotating disk 4 to be abnormal.

[0106] In some embodiments, it includes a second cylinder 33, which is installed on the side surface of the frame 1 near the upper end; a moving block 34, which is installed at the output end of the second cylinder 33; a third cylinder 35, which is installed on the moving block 34; a rubber head 36, which is installed at the lower end of the third cylinder 35; a second connecting rod 37, which is fixedly connected to the lower end of the moving block 34; a fixed plate 38, which is fixedly installed at the lower end of the second connecting rod 37; a scraper 39, which is arranged in two groups and fixedly installed at the lower position of the fixed plate 38; a roller frame 42, which is arranged on the scraper 39; an inking roller 43, the inking roller 43 is rotatably connected to the lower end of the roller frame 42; a third spring 40, the third spring 40 is fixedly mounted on the upper end of the roller frame 42, and the upper end of the third spring 40 is fixedly connected to the fixed plate 38; a limiting plate 41, the limiting plates 41 are arranged in two groups, and the two groups of limiting plates 41 are respectively arranged on both sides of the left side of the roller frame 42, and the upper ends of the limiting plates 41 are fixedly connected to the fixed plate 38; an ink cartridge 46, the ink cartridge 46 is arranged at a position below the inking roller 43, and the ink cartridge 46 is installed on the frame 1; a template 47, the template 47 is installed in the ink cartridge 46; a guide block 48, the guide block 48 is installed in the ink cartridge 46 at a position close to the template 47.

[0107] By adopting the above technical solution, the second cylinder 33 is used to control the moving block 34 to move left and right, and the third cylinder 35 is used to control the rubber head 36 to move up and down. When the moving block 34 moves left and right, the second connecting rod 37 controls the fixed plate 38 to move synchronously. In the initial position, the inking roller 43 is at the right end of the ink cartridge 46, and the ink cartridge 46 is filled with ink, and the liquid level of the ink is lower than the upper end surface of the template 47. When the qualified glass lens rotates to the left end of the ink cartridge 46, the rubber head 36 is directly above the template 47, and the third cylinder 35 controls the rubber head 36 to move downward to dip the ink on the template 47. Then the third cylinder 35 contracts to control the rubber head 36 to move upward, and the second cylinder 33 pushes the moving block 34 to move left, and the fixed plate 38 will also move together. The inking roller 43 moves with the fixed plate 38, and the inking roller 43 is immersed in the ink. As the inking roller 43 moves to the left, the inking roller 43 moves along the guide block 4 8 moves and gradually compresses the third spring 40. Finally, the inking roller 43 will stick to the upper plane of the template 47 to apply ink, and fill the ink into the groove of the template 47. When the moving block 34 moves to the left end, the rubber head 36 is just above the qualified glass lens. At this time, the third cylinder 35 controls the rubber head 36 to move down and finally contact the glass lens to achieve inking of the glass lens. Then the third cylinder 35 is reset, and the second cylinder 33 is reset to control the moving block 34 to move to the right. At the same time, the ink scraper 39 will also move to the right. The ink scraper 39 moves along the surface of the template 47, and the ink scraper 39 will scrape off the excess ink on the template 47. The present invention adopts a double ink scraper 39 design, which can improve the ink scraping effect on the template 47 and avoid the problem that the rubber head 36 dips excess ink on the template 47 and affects the moving quality. After the pad printing is completed, the rotating disk 4 is deflected 90°, and the glass lens that has been moved can be removed manually or by a robotic arm.

[0108] Unqualified glass lenses fall from the installation tube 5 during detection, and there is no glass lens in the installation tube 5. When the empty glass lens is rotated to the ink cartridge 46, the second cylinder 33 does not work, that is to say, the pad printing work is not performed.

[0109] In some embodiments, it includes a scraper 45, which is fitted on the right side of the ink scraper 39; a support plate 44, which is provided in two groups, and the two groups of support plates 44 are respectively fixedly installed at both ends of the scraper 45, and one end of the support plate 44 is fixedly connected to the roller frame 42.

[0110] In the present invention, when the inking roller 43 moves to the right along the guide block 48, the inking roller 43 will move downward along the inclined surface of the guide block 48, and the previously compressed third spring 40 will push the roller frame 42 to move downward. The downward movement of the roller frame 42 will drive the support plate 44 and the scraper 45 to move downward together, and the scraper 45 will move downward along the surface of the ink scraper 39, thereby scraping off excess ink on the ink scraper 39, avoiding the problem of too much ink on the ink scraper 39, which will make it difficult for the ink scraper 39 to scrape off excess ink on the template 47 and affect the movement quality.

[0111] The present invention also provides a pad printing method applicable to the above-mentioned optical glass lens pad printing device, comprising the following steps:

[0112] S1: Glass loading: Take the glass lens manually or by a robot arm, and place the glass lens in the rotating disk 4 mounting cylinder 5 to complete the loading;

[0113] S2: Testing glass: the rotating disk 4 rotates, and the glass lens enters the testing chamber 7 for testing to determine whether the glass lens is a qualified glass lens;

[0114] S3: Separating glass: When the glass lenses are judged to be unqualified, the two sets of barrier sheets 6 are opened, and the glass lenses are introduced into the guide tube 11 to screen out the unqualified glass lenses;

[0115] S4: Moving glass: After the qualified glass lens comes from the inspection chamber 7, the rubber head 36 is inked on the template 47, and the inked rubber head 36 then performs pad printing on the qualified glass lens;

[0116] S5: Removing the glass: After the pad printing is completed, the rotating plate 4 is deflected by 90°, and the glass lens that has been moved can be removed manually or by a robotic arm.

[0117] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pad printing device suitable for optical glass lenses, characterized in that: include: A frame body (1) and a mounting plate (2), wherein the mounting plate (2) is arranged on the left side of the frame body (1), and the mounting plate (2) is fixedly connected to the frame body (1); A motor (3), wherein the motor (3) is mounted on an upper surface of the mounting plate (2); A rotating disk (4), wherein the rotating disk (4) is fixedly mounted on the upper end of the motor (3); An installation tube (5), wherein the upper and lower ends of the installation tube (5) penetrate the rotating disk (4), and the installation tubes (5) are arranged in multiple groups, and the multiple groups of the installation tubes (5) are distributed in a ring shape; A rotating assembly, the rotating assembly being used to drive the mounting cylinder (5) to deflect, the rotating assembly comprising a first cylinder (13), and the mounting cylinder (5) is deflected by controlling the extension and retraction of the first cylinder (13); A detection mechanism, the detection mechanism is used to detect glass lenses to be pad printed, the detection mechanism comprises a detection chamber (7), the detection chamber (7) is arranged above one of the groups of mounting tubes (5), an illumination lamp (9) is installed on the inner wall of the detection chamber (7), a camera (8) is installed on the top of the detection chamber (7), after each group of glass lenses enters the detection chamber (7), the image features of the group of glass lenses are obtained by the camera (8), then the rotating component drives the mounting tube (5) to deflect, and the camera (8) obtains the image features of another group of glass lenses, and a processing module is also installed outside the detection chamber (7), the processing module compares the image features of the two groups of glass lenses and outputs the comparison result; A material unloading component, the material unloading component is mounted at the lower end of the rotating disk (4), the material unloading component comprises a barrier sheet (6), the barrier sheet (6) is arranged at the lower end of the mounting tube (5), and the barrier sheet (6) leaves the mounting tube (5) to realize material unloading to screen the glass lenses; The detection mechanism further comprises a storage module installed outside the detection chamber (7), wherein the image features of qualified glass lenses are stored in the storage module, and when the processing module finds through comparison that the image features of two groups of glass lenses overlap, the processing module arbitrarily selects the image features of one group of glass lenses and compares them one by one with the image features of qualified glass lenses in the storage module, and outputs the comparison result; A cloth curtain (12), the cloth curtain (12) being installed at the openings at both ends of the detection chamber (7), and the cloth curtain (12) being black in color; The blanking assembly also includes: an upper blocking ring plate (16), the upper blocking ring plate (16) being mounted on a side surface of the mounting cylinder (5), the upper blocking ring plate (16) being arranged at a position above the rotating disk (4); A lower blocking ring plate (17), the lower blocking ring plate (17) being mounted on a side surface of the mounting cylinder (5) near a lower end thereof, the lower blocking ring plate (17) being arranged below the rotating disk (4); The barrier sheets (6) are arranged in two groups, and the two groups of barrier sheets (6) are in a ring shape when in contact. The barrier sheets (6) are arranged below the lower barrier ring plate (17), and the barrier sheets (6) are slidably arranged with the lower barrier ring plate (17); An inclined plate (19), the inclined plate (19) being fixedly mounted on one end of the barrier plate (6), and the inclined surfaces of two groups of the inclined plates (19) being arranged adjacent to each other; an extrusion block (20), the extrusion block (20) being arranged at one end of the inclined plate (19), the extrusion block (20) being slidably connected to the lower blocking ring plate (17), the end of the extrusion block (20) close to the inclined plate (19) being designed with a sharp angle, the sharp angle of the extrusion block (20) being insertable into the two groups of inclined plates (19) to extrude the two groups of inclined plates (19) away from each other, and the end of the extrusion block (20) away from the inclined plate (19) being designed with an inclined angle; A limiting column (21), wherein the limiting column (21) is mounted at the lower end of the rotating disk (4), the number of the limiting columns (21) corresponds to the number of the extrusion blocks (20), and when the extrusion blocks (20) rotate with the lower blocking ring plate (17), the inclined surface of the extrusion blocks (20) will squeeze the limiting columns (21); A first fixing block (22), wherein the first fixing blocks (22) are provided in two groups, and the first fixing blocks (22) are fixedly mounted on the lower end of the barrier sheet (6); A first spring (23), wherein the first spring (23) is arranged between the two sets of first fixing blocks (22), and both ends of the first spring (23) are fixedly connected to the first fixing blocks (22); A second fixing block (25), wherein the second fixing block (25) is provided in two groups, and the second fixing block (25) is fixedly mounted on the lower end of the barrier sheet (6); A moving rod (24), wherein the moving rod (24) is fixedly mounted on one set of second fixing blocks (25), and an end of the moving rod (24) not connected to the second fixing block (25) slides through another set of second fixing blocks (25).

2. The pad printing device suitable for optical glass lenses according to claim 1, characterized in that: The blanking assembly also includes: a third fixing block (29), the third fixing block (29) being fixedly mounted on the outer side surface of the mounting tube (5); a second spring (28), one end of the second spring (28) being fixedly connected to a third fixing block (29); A connecting block (27), wherein the connecting block (27) is fixedly mounted on an end of the second spring (28) away from the third fixing block (29), and the lower end of the connecting block (27) is fixedly connected to the rotating disk (4).

3. The pad printing device suitable for optical glass lenses according to claim 2, characterized in that: The rotating assembly includes: A tooth group (26), wherein the tooth group (26) is mounted on a side surface of the mounting tube (5); A first connecting rod (14), the first connecting rod (14) being mounted on an output end of the first cylinder (13); A rack (15) is fixedly connected to the upper end of the first connecting rod (14); a hole is provided at the lower end of the detection chamber (7) for the rack (15) to move; and the rack (15) meshes with the tooth set (26) when moving.

4. The pad printing device for optical glass lenses according to claim 3, characterized in that: include: An extrusion head (30), the extrusion head (30) being mounted at an edge of the rotating disk (4), the number of the extrusion heads (30) corresponding to the number of the mounting cylinders (5), and a plurality of groups of the extrusion heads (30) being distributed in a ring shape; A spring piece (31), the spring piece (31) being mounted on the frame (1), and the spring piece (31) being made of a conductive material; A conductive block (32), wherein a groove is provided on the frame (1) at a position close to the spring sheet (31), and the conductive block (32) is installed in the groove. When the extrusion head (30) rotates with the rotating disk (4), it will squeeze the spring sheet (31), so that the spring sheet (31) and the conductive block (32) are in contact.

5. The pad printing device for optical glass lenses according to claim 4, characterized in that: include: A second cylinder (33), the second cylinder (33) being mounted on a side surface of the frame body (1) near an upper end; A moving block (34), the moving block (34) being mounted on an output end of the second cylinder (33); a third cylinder (35), the third cylinder (35) being mounted on the moving block (34); A rubber head (36), the rubber head (36) being mounted on the lower end of the third cylinder (35); a second connecting rod (37), the second connecting rod (37) being fixedly connected to the lower end of the moving block (34); A fixing plate (38), wherein the fixing plate (38) is fixedly mounted on the lower end of the second connecting rod (37); Ink scrapers (39), the ink scrapers (39) are arranged in two groups, and the ink scrapers (39) are fixedly installed at a position below the fixed plate (38); A roller frame (42), wherein the roller frame (42) is arranged at the right side of the ink scraper (39); An inking roller (43), the inking roller (43) being rotatably connected to the lower end of the roller frame (42); a third spring (40), the third spring (40) being fixedly mounted on the upper end of the roller frame (42), the upper end of the third spring (40) being fixedly connected to the fixing plate (38); Limiting plates (41), the limiting plates (41) being provided in two groups, the two groups of limiting plates (41) being respectively provided on both sides of the left side of the roller frame (42), the upper ends of the limiting plates (41) being fixedly connected to the fixing plate (38); An ink cartridge (46), the ink cartridge (46) being arranged below the ink application roller (43), and the ink cartridge (46) being mounted on the frame (1); A template (47), wherein the template (47) is installed in the ink cartridge (46); A guide block (48) is installed in the ink cartridge (46) at a position close to the template (47).

6. The pad printing device for optical glass lenses according to claim 5, characterized in that: include: A scraper (45), wherein the scraper (45) is disposed in close contact with the right side of the ink scraper (39); Support plates (44), wherein the support plates (44) are provided in two groups, and the two groups of support plates (44) are respectively fixedly mounted on two ends of the scraper (45), and one end of the support plate (44) is fixedly connected to the roller frame (42).

7. A pad printing method, applicable to the pad printing device applicable to optical glass lenses as claimed in claim 6, characterized in that: The steps include: S1: Glass loading: Take the glass lens manually or by a robot arm and place the glass lens in the rotating disk (4) mounting cylinder (5) to complete the loading; S2: Testing glass: the rotating disk (4) rotates, and the glass lens enters the testing chamber (7) for testing to determine whether the glass lens is a qualified glass lens; S3: Separating glass: when the glass lenses are judged to be unqualified, the two sets of barrier sheets (6) are opened, and the glass lenses are introduced into the guide tube (11) to screen out the unqualified glass lenses; S4: Moving glass: After the qualified glass lens comes out of the inspection room (7), the rubber head (36) is inked on the template (47), and the inked rubber head (36) then performs pad printing on the qualified glass lens; S5: Removing the glass: After the pad printing is completed, the rotating disk (4) is deflected by 90°, and the glass lens that has been moved can be removed manually or by a robotic arm.

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