Grinding device and grinding method for 3D optical lens

Abstract

The invention relates to the technical field of grinding, in particular to a grinding device and method for a 3D optical lens, and the grinding device comprises a base and further comprises two clamping assemblies located above the base and used for clamping and fixing the lens; the switching assembly is located between the two clamping assemblies; the grinding tool assembly is located below one clamping assembly, and the grinding tool assembly is located above the base; the driving assembly is located between the base and the grinding tool assembly; and the lifting assembly and the driving assembly are located below one clamping assembly. Through the arrangement of the clamping assembly, the switching assembly, the grinding tool assembly, the driving assembly and the lifting assembly, the automatic grinding device has the functions of rapid material changing, grinding tool switching and automatic grinding.

Description

Technical Field

[0001] The present invention relates to the field of grinding technology, and in particular to a grinding device and a grinding method for a 3D optical lens. Background Art

[0002] Grinding is a finishing process (such as cutting) of the machined surface by means of abrasive particles coated or pressed on the grinding tool, through the relative movement of the grinding tool and the workpiece under a certain pressure. Grinding can be used to process various metal and non-metal materials. The machined surface shapes include planes, internal and external cylindrical and conical surfaces, convex and concave spherical surfaces, threads, tooth surfaces and other surfaces.

[0003] 3D optical lenses are transparent media composed of two front and back refractive surfaces, also known as lenses. The two refractive surfaces of the lens are usually spherical, cylindrical or toric. These shapes refract light when passing through the lens, thereby changing the direction of light propagation and helping us see objects clearly. 3D optical lenses mainly have two types of material choices: resin and optical glass. Resin lenses are light, safe, and impact-resistant, but have poor wear resistance; while optical glass lenses have clear imaging and are not easy to wear, but are thicker and easier to break. In addition, 3D optical lenses have a wide range of functions and applications, including single-vision lenses, functional lenses such as anti-fatigue lenses, bifocal lenses, and progressive multifocal lenses. These lenses can be selected according to different eye needs. During the production and manufacturing period, 3D optical lenses need to be ground using a grinder.

[0004] After grinding, the existing grinder needs to remove the ground lens and then install the next lens to be ground before the next grinding can be carried out. This material replacement method is slow and will result in low grinding efficiency. Moreover, when the current grinder needs to grind a lens of another specification, the grinding head needs to be removed and then a suitable grinding head needs to be installed before it can be used. This method of replacing the grinding head is slow and will result in low grinding efficiency. For this reason, we propose a grinding device for 3D optical lenses to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing grinding machine's slow material replacement method and slow grinding head replacement method, which will cause low grinding efficiency, and to propose a grinding device and grinding method for 3D optical lenses.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A 3D optical lens grinding device comprises a base and also comprises: Two clamping assemblies, the clamping assemblies are located above the base, and the clamping assemblies are used to clamp and fix the lens; A switching assembly, wherein the switching assembly is located between the two clamping assemblies; A mold assembly, the mold assembly is located below a clamping assembly, and the mold assembly is located above a base; A drive assembly, the drive assembly being located between the base and the mold assembly; A lifting assembly, wherein the lifting assembly and the driving assembly are located below a clamping assembly.

[0007] Preferably, the clamping assembly includes a clamping cylinder, a gantry is fixedly provided on the outer periphery of the clamping cylinder, a cross plate is fixedly provided on the inner side of the gantry, a plurality of cross holes are provided on the upper side of the cross plate, clamping claws are slidably provided in the cross holes, a lifting plate is fixedly provided on the axial end of the clamping cylinder, a connecting rod is rotatably provided on the upper side of the clamping claw, and the upper end of the connecting rod rotates on the lower side of the lifting plate.

[0008] Preferably, the switching assembly includes a switching shaft, a circular hole is provided on the upper side of the base, the switching shaft rotates on the inner side of the circular hole, a switching frame is fixedly provided on the upper end of the switching shaft, the gantry is fixed on the switching frame, a gear is fixedly provided on the outer periphery of the switching shaft, a reciprocating seat is slidably provided on the upper side of the base, a rack is fixedly provided on one side of the reciprocating seat, the rack and the gear are connected by meshing transmission, a reciprocating cylinder is fixedly provided on the upper side of the base, and the shaft end of the reciprocating cylinder is fixed on the reciprocating seat.

[0009] Preferably, the mold assembly includes a guide column, the lower end of which is fixed on the upper side of the base, a guide ring is slidably sleeved on the outer periphery of the guide column, a support frame is rotatably provided on the outer periphery of the guide ring, a plurality of through holes are provided on the upper side of the support frame, a rotating shaft is rotatably provided on the inner side of the through holes, a grinding head is fixedly provided on the upper end of the rotating shaft, and the specifications of the grinding heads are different.

[0010] Preferably, the driving assembly includes a rotating column, a rotating sleeve is slidably sleeved on the outer circumference of the rotating column, a through hole is provided on the upper side of the base, the rotating sleeve rotates on the inner side of the through hole, a motor is fixedly provided on the top lower side of the base, the shaft end of the motor is connected to the outer circumference of the rotating sleeve through a bevel gear transmission, a hexagonal groove is provided on the lower side of the rotating shaft, and the rotating column is disassembled and inserted into the hexagonal groove.

[0011] Preferably, the lifting assembly includes a lifting cylinder, a mounting hole is provided on the upper side of the base, the lifting cylinder is fixed in the mounting hole, a connecting ring is slidingly sleeved on the outer periphery of the rotating column, a driving frame is rotatably provided on the outer periphery of the connecting ring, the shaft end of the lifting cylinder is fixed on the lower side of the driving frame, a plurality of connecting blocks are fixed on the lower side of the support frame, and the connection between one of the connecting blocks and the driving frame is detachable.

[0012] Preferably, the number of the connecting blocks is the same as the number of the rotating shafts.

[0013] Preferably, the connection block and the driving frame are detachably connected via bolts and nuts.

[0014] A grinding method of a grinding device for a 3D optical lens comprises the following steps: S1, clamping and fixing the lens by means of a clamping assembly; S2, automatically grinding the lens by cooperating with the grinding tool assembly, the lifting assembly and the driving assembly; S3, after the grinding is completed, the lifting assembly and the switching assembly cooperate to quickly replace the next lens to be ground; S4. When the grinding specifications need to be changed, the grinding specifications are changed through the lifting assembly and the grinding tool assembly.

[0015] The present invention provides a 3D optical lens grinding device and grinding method, which have the following beneficial effects: (1) The present invention has a quick material changing function by providing a base, a clamping assembly, a switching assembly, and a lifting assembly, and can quickly switch to the next lens to be ground, has a faster material changing speed, and thus has a higher grinding efficiency.

[0016] (2) The present invention has a grinding tool switching function by providing a grinding tool assembly and a lifting assembly. There is no need to remove and replace the grinding tool. Different grinding tools can be switched for use, and the grinding head can be quickly switched, thereby having a higher grinding efficiency.

[0017] (3) The present invention has an automatic grinding function by providing a clamping assembly, a switching assembly, a grinding tool assembly, a driving assembly, and a lifting assembly, and can automatically grind the lens with high grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front three-dimensional structure of a grinding device for a 3D optical lens proposed by the present invention; Figure 2 A schematic diagram of the back three-dimensional structure of a grinding device for a 3D optical lens proposed by the present invention; Figure 3 This is a front cutaway three-dimensional structural schematic diagram of a 3D optical lens grinding device proposed by the present invention; Figure 4 The present invention proposes Figure 3 A schematic diagram of the partial enlarged structure of the middle A area; Figure 5 The present invention proposes Figure 3 Schematic diagram of the local enlarged structure of area B in the middle.

[0019] In the figure: 1. base; 2. clamping cylinder; 3. gantry; 4. cross plate; 5. clamping claw; 6. lifting plate; 7. connecting rod; 8. switching shaft; 9. switching frame; 10. gear; 11. reciprocating seat; 12. rack; 13. reciprocating cylinder; 14. guide column; 15. guide ring; 16. support frame; 17. rotating shaft; 18. grinding head; 19. rotating column; 20. rotating sleeve; 21. motor; 22. lifting cylinder; 23. connecting ring; 24. driving frame; 25. connecting block. DETAILED DESCRIPTION

[0020] 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 the embodiments.

[0021] Reference Figures 1 to 5 A 3D optical lens grinding device includes a base 1, and also includes: two clamping components, a switching component, a mold component, a driving component, and a lifting component.

[0022] like Figure 1 , Figure 4 As shown, the clamping assembly is located above the base 1, and the clamping assembly is used to clamp and fix the lens. The clamping assembly includes a clamping cylinder 2, and the clamping cylinder 2 is externally connected to an electromagnetic valve through an air pipe. A gantry 3 is fixedly provided on the outer periphery of the clamping cylinder 2, and a cross plate 4 is fixedly provided on the inner side of the gantry 3. A plurality of cross holes are provided on the upper side of the cross plate 4, and a clamping claw 5 is slidably provided in the cross hole. A lifting plate 6 is fixedly provided on the axial end of the clamping cylinder 2, and a connecting rod 7 is rotatably provided on the upper side of the clamping claw 5. The upper end of the connecting rod 7 rotates on the lower side of the lifting plate 6. When it is needed When grinding a lens, it is necessary to first clamp and fix the lens on the clamping assembly. When the lens is clamped and fixed by the clamping assembly, it is necessary to first control the clamping cylinder 2 to extend so that the clamping jaws 5 are away from each other, and then place the lens between the multiple clamping jaws 5. Then control the clamping cylinder 2 to retract. At this time, the clamping jaws 5 will approach each other and clamp the lens, thereby completing automatic clamping, and the center of the lens can be controlled below the center of the cross plate 4, so as to facilitate grinding of lenses of different specifications, and it has strong versatility.

[0023] like Figures 1 to 3As shown, the switching assembly is located between the two clamping assemblies, and the switching assembly is used to make the two clamping assemblies quickly interchange with each other. The switching assembly includes a switching shaft 8, a circular hole is provided on the upper side of the base 1, and the switching shaft 8 rotates on the inner side of the circular hole. A switching frame 9 is fixedly provided on the upper end of the switching shaft 8, and the gantry 3 is fixed on the switching frame 9. A gear 10 is fixedly provided on the outer periphery of the switching shaft 8, and a reciprocating seat 11 is slidably provided on the upper side of the base 1. A rack 12 is fixedly provided on one side of the reciprocating seat 11. The rack 12 is connected to the gear 10 through meshing transmission. A reciprocating cylinder 13 is fixedly provided on the upper side of the base 1, and the reciprocating cylinder 13 is externally connected to an electric motor through an air pipe. Magnetic valve, the shaft end of the reciprocating cylinder 13 is fixed on the reciprocating seat 11. When in use, when the lens grinding is completed and the next lens needs to be ground, the next ground lens needs to be clamped on another clamping assembly first, and then after the lens grinding is completed, the reciprocating cylinder 13 is controlled to extend or retract. When the reciprocating cylinder 13 extends or retracts, it will drive the reciprocating seat 11 and the rack 12 to move. When the rack 12 moves, it will drive the gear 10 and the switching shaft 8 to rotate one hundred and eighty degrees, so that the other clamping assembly and the lens to be ground can be quickly switched to the grinding position, so that fast material replacement can be achieved, with higher grinding efficiency.

[0024] like Figure 1 , Figure 3 As shown, the mold assembly is used to provide a mold for grinding. The mold assembly is located below a clamping assembly. The mold assembly is located above the base 1. The mold assembly includes a guide column 14. The guide column 14 is an octagonal structure. The lower end of the guide column 14 is fixed to the upper side of the base 1. A guide ring 15 is slidably sleeved on the outer periphery of the guide column 14. A support frame 16 is rotatably provided on the outer periphery of the guide ring 15. A plurality of through holes are provided on the upper side of the support frame 16. A rotating shaft 17 is rotatably provided on the inner side of the through holes. A grinding head 18 is fixedly provided on the upper end of the rotating shaft 17. The specifications of the grinding head 18 are different. Before grinding the lens, a grinding head 18 of appropriate specifications needs to be selected for use, so that it has strong versatility.

[0025] like Figure 3 , Figure 5As shown, the driving assembly is used to drive the mold assembly for grinding. The driving assembly is located between the base 1 and the mold assembly. The driving assembly includes a rotating column 19. The rotating column 19 is a hexagonal structure. A rotating sleeve 20 is slidably sleeved on the outer periphery of the rotating column 19. A through hole is provided on the upper side of the base 1. The rotating sleeve 20 rotates on the inner side of the through hole. A motor 21 is fixedly provided on the top lower side of the base 1. The motor 21 is connected to an external power supply and a switch through a wire. The shaft end of the motor 21 is connected to the outer periphery of the rotating sleeve 20 through a bevel gear transmission connection. A hexagonal groove is provided on the lower side of the rotating shaft 17. The rotating column 19 is disassembled and inserted into the hexagonal groove. When the lens needs to be ground, the rotating column 19 needs to be inserted into the hexagonal groove of the corresponding rotating shaft 17 first, and then the motor 21 is turned on. The motor 21 will drive the rotating sleeve 20 and the rotating column 19 to rotate through the bevel gear. When the rotating column 19 rotates, it will drive the corresponding rotating shaft 17 and the grinding head 18 to rotate. When the grinding head 18 rotates, the lower surface of the lens can be automatically ground, which can achieve automatic grinding.

[0026] like Figure 3 , Figure 5As shown, the lifting assembly is used to drive the mold assembly to rise or fall. The lifting assembly and the driving assembly are located below a clamping assembly. The lifting assembly includes a lifting cylinder 22. A mounting hole is provided on the upper side of the base 1. The lifting cylinder 22 is fixed in the mounting hole. The lifting cylinder 22 is externally connected to the electromagnetic valve through an air pipe. A connecting ring 23 is slidably sleeved on the outer periphery of the rotating column 19. A driving frame 24 is rotatably provided on the outer periphery of the connecting ring 23. The shaft end of the lifting cylinder 22 is fixed to the lower side of the driving frame 24. The lower side of the support frame 16 is fixed A plurality of connecting blocks 25 are provided, and the connecting blocks 25 and the rotating shaft 17 are evenly distributed on the circumference. The number of the connecting blocks 25 is the same as that of the rotating shaft 17. One connecting block 25 is detachably connected to the driving frame 24. The connecting block 25 and the driving frame 24 are detachably connected by bolts and nuts. Specifically, bolt holes are provided on one side of the connecting block 25 and the driving frame 24. The bolts penetrate the two bolt holes. The outer periphery of the bolts is connected to the nuts by threads. One side of the driving frame 24 and the connecting block 25 is an arc-shaped structure. The driving frame 24 and the connecting block 25 are detachably connected to the driving frame 24. The arc surface on the guide ring 15 is a concentric structure. When the lens needs to be ground, the lifting cylinder 22 needs to be controlled to extend first. The extension of the lifting cylinder 22 will drive the support frame 16, the guide ring 15, the rotating shaft 17, the grinding head 18 and the rotating column 19 to rise, so that the grinding head 18 can contact the lower surface of the lens, and then the motor 21 is turned on for grinding. When the lens grinding is completed and the material needs to be changed, the lifting cylinder 22 needs to be controlled to retract first so that the grinding head 18 descends, and then the reciprocating cylinder 13 is controlled to extend or retract to change the material, thereby preventing the grinding head 18 from hitting the lens. When the grinding head 18 needs to be replaced, the lifting cylinder 22 needs to be controlled to retract first, and then the connecting block 25 is separated from the driving frame 24, and then the support frame 16 is lifted, so that the rotating column 19 is separated from the hexagonal groove, and then the supporting frame 16 is rotated to select a suitable grinding head 18 for use. After the selection is completed, the reverse step is performed, and the driving frame 24 is connected to the corresponding connecting block 25 for continued use, thereby facilitating the replacement of the grinding head 18.

[0027] A grinding method of a grinding device for a 3D optical lens comprises the following steps: S1, clamping and fixing the lens by means of a clamping assembly; S2, automatically grinding the lens by cooperating with the grinding tool assembly, the lifting assembly and the driving assembly; S3, after the grinding is completed, the lifting assembly and the switching assembly cooperate to quickly replace the next lens to be ground; S4. When the grinding specifications need to be changed, the grinding specifications are changed through the lifting assembly and the grinding tool assembly.

Claims

1. A 3D optical lens grinding device, comprising a base (1), characterized in that: Also includes: Two clamping assemblies, the clamping assemblies being located above the base (1) and being used to clamp and fix the lens; A switching assembly, wherein the switching assembly is located between the two clamping assemblies; A mold assembly, the mold assembly is located below a clamping assembly, and the mold assembly is located above a base (1); A drive assembly, the drive assembly being located between the base (1) and the mold assembly; A lifting assembly, wherein the lifting assembly and the driving assembly are located below a clamping assembly.

2. A 3D optical lens grinding device according to claim 1, characterized in that: The clamping assembly comprises a clamping cylinder (2), a gantry (3) is fixedly provided on the outer periphery of the clamping cylinder (2), a cross plate (4) is fixedly provided on the inner side of the gantry (3), a plurality of cross holes are provided on the upper side of the cross plate (4), a clamping claw (5) is slidably provided in the cross hole, a lifting plate (6) is fixedly provided on the axial end of the clamping cylinder (2), a connecting rod (7) is rotatably provided on the upper side of the clamping claw (5), and the upper end of the connecting rod (7) is rotatably disposed on the lower side of the lifting plate (6).

3. A 3D optical lens grinding device according to claim 2, characterized in that: The switching assembly comprises a switching shaft (8), a circular hole is provided on the upper side of the base (1), the switching shaft (8) rotates inside the circular hole, a switching frame (9) is fixedly provided on the upper end of the switching shaft (8), the gantry frame (3) is fixed on the switching frame (9), a gear (10) is fixedly provided on the outer periphery of the switching shaft (8), a reciprocating seat (11) is slidably provided on the upper side of the base (1), a rack (12) is fixedly provided on one side of the reciprocating seat (11), the rack (12) is connected to the gear (10) through meshing transmission, and a reciprocating cylinder (13) is fixedly provided on the upper side of the base (1), the shaft end of the reciprocating cylinder (13) is fixed on the reciprocating seat (11).

4. The grinding device for a 3D optical lens according to claim 1, characterized in that: The abrasive tool assembly comprises a guide column (14), the lower end of the guide column (14) is fixed on the upper side of the base (1), a guide ring (15) is slidably sleeved on the outer periphery of the guide column (14), a support frame (16) is rotatably provided on the outer periphery of the guide ring (15), a plurality of through holes are provided on the upper side of the support frame (16), a rotating shaft (17) is rotatably provided inside the through holes, a grinding head (18) is fixedly provided on the upper end of the rotating shaft (17), and the specifications of the grinding heads (18) are different.

5. A 3D optical lens grinding device according to claim 4, characterized in that: The driving assembly comprises a rotating column (19), a rotating sleeve (20) being slidably sleeved on the outer periphery of the rotating column (19), a through hole being provided on the upper side of the base (1), the rotating sleeve (20) rotating on the inner side of the through hole, a motor (21) being fixedly provided on the lower side of the top of the base (1), the shaft end of the motor (21) being connected to the outer periphery of the rotating sleeve (20) via a bevel gear transmission, a hexagonal groove being provided on the lower side of the rotating shaft (17), the rotating column (19) being disassembled and inserted into the hexagonal groove.

6. A 3D optical lens grinding device according to claim 5, characterized in that: The lifting assembly comprises a lifting cylinder (22), a mounting hole is provided on the upper side of the base (1), the lifting cylinder (22) is fixed in the mounting hole, a connecting ring (23) is slidably sleeved on the outer periphery of the rotating column (19), a driving frame (24) is rotatably provided on the outer periphery of the connecting ring (23), the shaft end of the lifting cylinder (22) is fixed on the lower side of the driving frame (24), a plurality of connecting blocks (25) are fixed on the lower side of the supporting frame (16), and one of the connecting blocks (25) is detachably connected to the driving frame (24).

7. A 3D optical lens grinding device according to claim 6, characterized in that: The number of the connecting blocks (25) is the same as the number of the rotating shafts (17).

8. The grinding device for a 3D optical lens according to claim 6, characterized in that: The connection block (25) and the driving frame (24) are detachably connected via bolts and nuts.

9. A grinding method for a 3D optical lens grinding device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, clamping and fixing the lens by means of a clamping assembly; S2, automatically grinding the lens by cooperating with the grinding tool assembly, the lifting assembly and the driving assembly; S3, after the grinding is completed, the lifting assembly and the switching assembly cooperate to quickly replace the next lens to be ground; S4. When the grinding specifications need to be changed, the grinding specifications are changed through the lifting assembly and the grinding tool assembly.

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