Lens grinding, polishing and clamping equipment for low-distortion ultraviolet optical lens

Abstract

The utility model relates to lens grinding, polishing and clamping equipment for a low-distortion ultraviolet optical lens, which comprises a slidable base and a clamping mechanism, according to the technical key points, the clamping mechanism comprises a bottom plate, a lifting mechanism, a horizontal supporting plate arranged at the top of the lifting mechanism, a front positioning plate, a rear positioning plate, a front positioning column, a rear positioning column, a front clamping hoop body and a rear clamping hoop body, wherein the front positioning plate and the rear positioning plate are arranged above the horizontal supporting plate; the front positioning column and the rear positioning column are arranged on the front positioning plate and the rear positioning plate; the front clamping hoop body and the rear clamping hoop body are oppositely arranged, the left end and the right end of the front clamping hoop body and the left end and the right end of the rear clamping hoop body are fixedly connected, supporting bodies are arranged at the positions, on the left side and the right side of the lifting mechanism, of the bottom plate respectively, small short shafts are arranged on the upper portions of the two supporting bodies respectively, the axes of the two small short shafts coincide, and one small short shaft is connected with the output end of the overturning motor. And the opposite ends of the two small short shafts are fixedly connected with the left end parts and the right end parts of the front clamping hoop body and the rear clamping hoop body. The equipment does not need manual secondary positioning of the lens, the machining efficiency is remarkably improved, the positioning precision is high, and the machining quality is good.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment for low-distortion ultraviolet optical lenses, in particular to a lens grinding, polishing and clamping device for low-distortion ultraviolet optical lenses. Background Art

[0002] At present, optical lenses are mainly concentrated in the visible light and infrared bands, and there are fewer products in the ultraviolet band. However, due to the specificity of the surface absorption of the ultraviolet spectrum, the details of the surface of the object can be seen more clearly, such as scratches, welding scars or fingerprints on the surface, so it is very suitable for product detection and identification in the industrial production process. In the fields of measurement and detection, distortion will cause errors, thereby reducing measurement accuracy. The use of low-distortion ultraviolet optical lenses can significantly reduce this error, improve measurement accuracy, and ensure the accuracy and reliability of measurement results.

[0003] Low-distortion ultraviolet optical lenses are generally composed of multiple lenses arranged along the optical axis, among which the lenses are fused quartz lenses or calcium fluoride lenses. During processing, the calcium fluoride or fused quartz material is first milled to obtain a lens blank, and then the optical surface of the lens blank is polished to achieve the set surface accuracy and surface defect level.

[0004] For example, CN 219562505 U discloses a lens grinding and polishing device, which includes a device base and a lens body, a grinding table is arranged in the middle position of the top surface of the device base, pillars are arranged on the upper end surfaces of the device base on both sides of the grinding table, a fixing frame is arranged between the top surfaces of the two pillars, a protective seat is arranged in the middle position of the top surface of the fixing frame, an electric push rod is installed inside the protective seat, a lifting seat is arranged on the lower end surface of the electric push rod, a grinding head is arranged at the lower end of the lifting seat, a fixing seat is installed in the middle position inside the grinding table, a lens body is arranged on the surface of the fixing seat, and a negative pressure fan is arranged inside the grinding table on one side of the lens body. The device realizes the effect of automatic dust collection and cleaning of the polished surface of the lens grinding and polishing by arranging a negative pressure fan, a dust collecting box and a grinding table. However, the following problems still exist during use: since both the object side and the image side of the lens need to be ground and polished, after completing the grinding and polishing of the object side or the image side, the staff needs to remove the lens, flip it over and then reposition it, which not only wastes time, but also has low positioning accuracy, affecting the processing quality. Utility Model Content

[0005] The purpose of the utility model is to provide a lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens with a reasonable structure and reliable use to solve the above-mentioned problems. It does not require manual secondary positioning of the lens, significantly improves processing efficiency, and has high positioning accuracy and good processing quality.

[0006] The technical solution of the utility model is:

[0007] A lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens comprises a slidable base and a clamping mechanism arranged above the slidable base, and the technical key points are: the clamping mechanism comprises a bottom plate, a lifting mechanism arranged in the middle of the bottom plate, a horizontal support plate arranged at the top of the lifting mechanism, a front positioning plate and a rear positioning plate arranged above the horizontal support plate, a plurality of front positioning columns arranged on the front positioning plate, a plurality of rear positioning columns arranged on the rear positioning plate, a front clamping body supported above each front positioning column, and a rear clamping body supported above each rear positioning column, the front clamping body and the rear clamping body are arranged opposite to each other and the left and right ends of the two are fixedly connected, the bottom plate is respectively provided with support bodies at the left and right sides of the lifting mechanism, the upper parts of the two support bodies are respectively provided with small short shafts, the axis center lines of the two small short shafts coincide and one of the small short shafts is connected to the output end of the flip motor, and the opposite ends of the two small short shafts are connected and fixed to the left and right ends of the front and rear clamping bodies.

[0008] The lens grinding and polishing clamping equipment for the above-mentioned low-distortion ultraviolet optical lens has two groups of front and rear positioning pins on the horizontal support plate, the front positioning plate is provided with first front and rear adjustment holes that cooperate with the positioning pins, and the rear positioning plate is provided with second front and rear adjustment holes that cooperate with the positioning pins.

[0009] The lens grinding and polishing clamping equipment for the above-mentioned low-distortion ultraviolet optical lens has reducing heads on the top ends of the front positioning column and the rear positioning column respectively, and rings matching the reducing heads are provided on the outer peripheral walls of the front and rear clamp bodies, and the top ends of the reducing heads are conical to facilitate insertion into the rings.

[0010] The lens grinding and polishing clamping equipment of the above-mentioned low-distortion ultraviolet optical lens has C-shaped connectors fixed on the opposite ends of the two short shafts respectively, and the open ends of the C-shaped connectors clamp the left connecting end or the right connecting end of the front and rear clamp bodies on the corresponding sides. The C-shaped connector is provided with an extrusion plate pressed above the left connecting end or the right connecting end, and the upper surface of the C-shaped connector is provided with a screw sleeve, a screw is connected to the screw sleeve and the lower end of the screw presses the extrusion plate, and the upper end of the screw is connected to a locking nut.

[0011] The lens grinding and polishing clamping device for the low-distortion ultraviolet optical lens mentioned above has guide vertical plates on the upper surface of the base plate at the left and right sides of the horizontal support plate, and the upper end of the guide vertical plate is higher than the upper dead point of the horizontal support plate.

[0012] In the lens grinding and polishing clamping device for the low-distortion ultraviolet optical lens, the lifting mechanism is a lifting cylinder, and the top end of the telescopic part of the lifting cylinder is connected and fixed to the horizontal support plate.

[0013] The lens grinding and polishing clamping equipment for the above-mentioned low-distortion ultraviolet optical lens is characterized in that the bottom of the slidable base is provided with a horizontal track extending toward the grinding and polishing station, a material transport linear module is suspended above the starting side of the horizontal track, the material transport linear module is parallel to the horizontal track, a multi-section telescopic cylinder is connected to the lower surface of the slider of the material transport linear module, a suction cup is fixed to the lower end of the cylinder rod of the multi-section telescopic cylinder, a peripheral edge is provided on the edge of the lower surface of the suction cup, vacuum suction heads connected to the inner cavity of the suction cup are evenly provided near the peripheral edge on the lower surface of the suction cup, and an air suction port connected to the inner cavity of the suction cup is provided on the upper surface of the suction cup.

[0014] In the lens grinding and polishing clamping device for the low-distortion ultraviolet optical lens, a proximity switch for detecting whether the suction cup reaches above the clamping mechanism is provided on the lower surface of the material transport linear module.

[0015] The beneficial effects of the utility model are:

[0016] 1. The front clamp body and the rear clamp body of the clamping mechanism are buckled to clamp the lens blank, and the front and rear positioning columns provide working support for the front clamp body and the rear clamp body. After completing the grinding and polishing of one side of the lens blank, the lifting mechanism descends to drive the front and rear positioning columns downward and detach from the front and rear clamp bodies. The flip motor is started to drive the two small short shafts, the front and rear clamp bodies and the clamped lens blank to flip 180 degrees. The lifting mechanism is reset, and the front and rear positioning columns support the front and rear clamp bodies again. In this state, the other side of the lens blank can be ground and polished, and the staff does not need to re-clamp the lens blank, so there is no need for manual secondary positioning of the lens blank. On the one hand, the processing efficiency is significantly improved, and on the other hand, the positioning deviation caused by re-positioning is avoided, the positioning accuracy is significantly improved, and the processing quality is guaranteed.

[0017] 2. Use the vacuum suction heads of the suction cup to suck the lens blanks on the material rack, and then drive them to the top of the clamping mechanism under the drive of the material transport linear module, and place the lens blanks into the encirclement of the front and rear clamping hoops of the clamping mechanism. After being clamped and fixed by the front and rear clamping hoops, the suction cup is reset, and the sliding base is moved to the grinding and polishing station for grinding and polishing operations. It is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the lifting mechanism of the utility model when it is in the downward direction;

[0020] Figure 3 yes Figure 2 A top view of

[0021] Figure 4 This is a schematic diagram of the utility model after the lens blank is turned over;

[0022] Figure 5 It is a structural schematic diagram of the lifting mechanism of the utility model after it is lifted up.

[0023] In the figure: 1. material transport linear module, 2. multi-section telescopic cylinder, 3. exhaust port, 4. suction cup, 5. vacuum suction head, 6. horizontal track, 7. bottom plate, 8. support body, 9. flip motor, 10. C-type connector, 11. screw, 12. front clamp body, 13. lens blank, 14. collar, 15. front positioning column, 16. front positioning plate, 17. horizontal support plate, 18. lifting cylinder, 19. proximity switch, 20. guide vertical plate, 21. locking nut, 22. extrusion plate, 23. screw sleeve, 24. reducing head, 25. small short shaft, 26. rear positioning plate, 27. rear clamp body, 28. rear positioning column, 29. positioning pin, 30. second front and rear adjustment hole, 31. first front and rear adjustment hole. DETAILED DESCRIPTION

[0024] The utility model is described in detail according to the accompanying drawings of the specification.

[0025] like Figure 1 to Figure 5 As shown, the lens grinding and polishing clamping device of the low-distortion ultraviolet optical lens includes a slidable base and a clamping mechanism arranged above the slidable base.

[0026] The clamping mechanism includes a bottom plate 7, a lifting mechanism disposed in the middle of the bottom plate 7, a horizontal support plate 17 disposed at the top of the lifting mechanism, a front positioning plate 16 and a rear positioning plate 26 disposed above the horizontal support plate 17, a plurality of front positioning posts 15 disposed on the front positioning plate 16, a plurality of rear positioning posts 28 disposed on the rear positioning plate 26, a front clamp body 12 supported above each front positioning post 15, and a rear clamp body 27 supported above each rear positioning post 28. The front clamp body 12 and the rear clamp body 27 are arranged opposite to each other and the left and right ends of the two are fixedly connected. In this embodiment, the horizontal support plate 17 is provided with front and rear two groups of positioning pins 29, the front positioning plate 16 is provided with a first front and rear adjustment hole 31 matched with the positioning pin 29, and the rear positioning plate 26 is provided with a second front and rear adjustment hole 30 matched with the positioning pin 29. The top ends of the front positioning column 15 and the rear positioning column 28 are respectively provided with reducing heads 24 , and the outer peripheral walls of the front and rear clamp bodies are provided with collars 14 that cooperate with the reducing heads 24 . The top ends of the reducing heads 24 are conical to facilitate insertion into the collars 14 .

[0027] The bottom plate 7 is provided with support bodies 8 at the positions of the left and right sides of the lifting mechanism, respectively. The upper parts of the two support bodies 8 are provided with small short shafts 25, respectively. The axis lines of the two small short shafts 25 coincide and one of the small short shafts 25 is connected to the output end of the flip motor 9. The opposite ends of the two small short shafts 25 are connected and fixed to the left and right ends of the front and rear clamp bodies. In this embodiment, the opposite ends of the two small short shafts 25 are respectively fixed with C-shaped connectors 10, the open end of the C-shaped connector 10 clamps the left connecting end or the right connecting end of the front and rear clamp bodies on the corresponding side, and the C-shaped connector 10 is provided with an extrusion plate 22 pressed above the left connecting end or the right connecting end, and the upper surface of the C-shaped connector 10 is provided with a screw sleeve 23, the screw sleeve 23 is connected with a screw rod 11, and the lower end of the screw rod 11 presses the extrusion plate 22, and the upper end of the screw rod 11 is connected with a locking nut 21.

[0028] The upper surface of the bottom plate 7 is provided with guide vertical plates 20 at the left and right sides of the horizontal support plate 17, and the upper ends of the guide vertical plates 20 are higher than the upper dead point of the horizontal support plate 17. The lifting mechanism is a lifting cylinder 18, and the top end of the telescopic part of the lifting cylinder 18 is connected and fixed to the horizontal support plate 17.

[0029] The bottom of the slidable base is provided with a horizontal track 6 extending toward the grinding and polishing station, and a material transport linear module 1 is suspended above the starting side of the horizontal track 6, and the material transport linear module 1 is parallel to the horizontal track 6. The lower surface of the slider of the material transport linear module 1 is connected to a multi-section telescopic cylinder 2, and a suction cup 4 is fixed to the lower end of the cylinder rod of the multi-section telescopic cylinder 2. The lower surface edge of the suction cup 4 is provided with a surrounding edge, and the lower surface of the suction cup 4 is evenly provided with a vacuum suction head 5 connected to the inner cavity of the suction cup near the surrounding edge, and the upper surface of the suction cup 4 is provided with an air extraction port 3 connected to its inner cavity. The lower surface of the material transport linear module 1 is provided with a proximity switch 19 for detecting whether the suction cup 4 reaches the top of the clamping mechanism.

[0030] Working principle:

[0031] 1. The suction cup 4 sucks the lens blank 13 on the material rack, the cylinder rod of the multi-section telescopic cylinder 2 retracts, and then reaches the top of the clamping mechanism under the drive of the material transport linear module 1. The cylinder rod of the multi-section telescopic cylinder 2 extends downward to place the lens blank 13 into the encirclement range of the front and rear clamping hoops of the clamping mechanism. The staff clamps and fixes the opposite ends of the two front and rear clamping hoops, rotates the screw 11 to press the extrusion plate 22, and rotates and tightens the locking nut 21.

[0032] 2. The front and rear positioning columns rise under the action of the lifting mechanism and are connected to the collar 14 to provide working support for the front clamp body 12 and the rear clamp body 27. The slidable base moves to the grinding and polishing station for grinding and polishing operations.

[0033] 3. After completing the grinding and polishing of one side of the lens blank 13, the lifting mechanism descends to drive the front and rear positioning columns downward to disengage the front and rear clamping bodies, and the flip motor 9 is started to drive the two small short shafts 25, the front and rear clamping bodies and the clamped lens blank 13 to flip 180 degrees. The lifting mechanism is reset, and the front and rear positioning columns support the front and rear clamping bodies again. In this state, the other side of the lens blank 13 can be ground and polished.

[0034] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens, comprising a slidable base and a clamping mechanism disposed above the slidable base, characterized in that: The clamping mechanism includes a base plate, a lifting mechanism arranged in the middle of the base plate, a horizontal support plate arranged on the top of the lifting mechanism, a front positioning plate and a rear positioning plate arranged above the horizontal support plate, a plurality of front positioning posts arranged on the front positioning plate, a plurality of rear positioning posts arranged on the rear positioning plate, a front clamp body supported above each front positioning post, and a rear clamp body supported above each rear positioning post, the front clamp body and the rear clamp body are arranged opposite to each other and the left and right ends of the two are fixedly connected, the base plate is respectively provided with support bodies at the left and right sides of the lifting mechanism, and small short shafts are respectively provided on the upper parts of the two support bodies, the axial center lines of the two small short shafts coincide and one of the small short shafts is connected to the output end of the flip motor, and the opposite ends of the two small short shafts are connected and fixed to the left and right ends of the front and rear clamp bodies.

2. The lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens according to claim 1 is characterized in that: The horizontal support plate is provided with front and rear groups of positioning pins, the front positioning plate is provided with first front and rear adjustment holes matched with the positioning pins, and the rear positioning plate is provided with second front and rear adjustment holes matched with the positioning pins.

3. The lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens according to claim 1, characterized in that: The top ends of the front positioning column and the rear positioning column are respectively provided with reducing heads, and the outer peripheral walls of the front and rear clamp bodies are provided with sleeve rings matched with the reducing heads. The top ends of the reducing heads are conical so as to facilitate insertion into the sleeve rings.

4. The lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens according to claim 1, characterized in that: The opposite ends of the two small short shafts are respectively fixed with C-shaped connectors, and the open ends of the C-shaped connectors clamp the left connecting end or the right connecting end of the front and rear clamp bodies on the corresponding sides. The C-shaped connector is provided with an extrusion plate pressed above the left connecting end or the right connecting end, and the upper surface of the C-shaped connector is provided with a screw sleeve, a screw rod is connected to the screw sleeve, and the lower end of the screw rod presses the extrusion plate, and the upper end of the screw rod is connected with a locking nut.

5. The lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens according to claim 1, characterized in that: The upper surface of the bottom plate is provided with guide vertical plates at the positions of the left and right sides of the horizontal support plate, and the upper ends of the guide vertical plates are higher than the upper dead points of the horizontal support plate.

6. The lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens according to claim 1, characterized in that: The lifting mechanism is a lifting cylinder, and the top end of the telescopic part of the lifting cylinder is connected and fixed to the horizontal supporting plate.

7. The lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens according to claim 1, characterized in that: The bottom of the slidable base is provided with a horizontal track extending to the grinding and polishing station, and a material transport linear module is suspended above the starting side of the horizontal track. The material transport linear module is parallel to the horizontal track, and the lower surface of the slider of the material transport linear module is connected to a multi-section telescopic cylinder, and a suction cup is fixed to the lower end of the cylinder rod of the multi-section telescopic cylinder, and a peripheral edge is provided on the edge of the lower surface of the suction cup, and vacuum suction heads connected to the inner cavity of the suction cup are evenly provided near the peripheral edge on the lower surface of the suction cup, and an air suction port connected to the inner cavity of the suction cup is provided on the upper surface of the suction cup.

8. The lens grinding and polishing clamping device for a low-distortion ultraviolet optical lens according to claim 7, characterized in that: A proximity switch for detecting whether the suction cup reaches above the clamping mechanism is arranged on the lower surface of the material transport linear module.

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