Lens centering device suitable for edge grinding machine

Abstract

The utility model belongs to the technical field of optical lens machining equipment, and particularly relates to a lens centering device suitable for an edge grinding machine. Comprising a rack, a mounting base, a suction assembly, a clamping assembly, a cross curve transmitting lens arranged on the rack and located on one side of the suction assembly, an imaging receiving lens arranged on the rack and located on one side of the clamping assembly, and a computer electrically connected with the imaging receiving lens. The cross curve emission lens, the suction assembly, the clamping assembly and the imaging receiving lens are coaxially arranged, and the computer comprises a processing module which obtains an imaging cross rotation path emitted by the cross curve emission lens through the imaging receiving lens so as to obtain a circle center and generate a reference cross. And the display screen is used for displaying the imaging cross and the reference cross. An operator can intuitively contrast the display screen and manually adjust the position of the lens workpiece, so that the imaging cross coincides with the reference cross, and the centering operation is completed.

Description

TECHNICAL FIELD

[0002] The application belongs to the technical field of optical lens processing equipment, and particularly relates to a lens centering device suitable for an edging machine. BACKGROUND

[0004] The lens centering edging machine is a mechanical device for processing spectacle lenses. Through the lens centering edging machine, the edges of the spectacle lenses can be trimmed and processed, so that the size, shape and surface quality of the spectacle lenses meet the requirements of lens fitting. Before edging, the lens needs to be centered. For lenses with small curvature, the traditional edging machine can automatically adjust the lens to the center position by rotating at high speed after the lens is adsorbed by the suction assembly. However, for lenses with large curvature, the centering operation cannot be completed by this method. The reason is that the lens with large curvature will be significantly affected by centrifugal force when rotating at high speed, which makes it difficult to be centered. The centrifugal force will cause the lens to deviate outward along the curved edge, and the lens cannot be kept at the center of rotation. Therefore, it is difficult to accurately center the lens with large curvature by high-speed rotation. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the problem that the lens centering edging machine in the prior art cannot center the lens with large curvature by high-speed rotation, the application provides a lens centering device suitable for an edging machine.

[0007] The application is implemented by the following technical solutions:

[0008] A lens centering device suitable for an edging machine, comprising a rack, a mounting base provided on the rack, a suction assembly provided on the mounting base and used for adsorbing a workpiece and driving the workpiece to rotate, a clamping assembly provided on the mounting base and corresponding to the suction assembly to clamp the workpiece, a cross line emission lens provided on the rack on one side of the suction assembly, an imaging receiving lens provided on the rack on one side of the clamping assembly, and a computer electrically connected to the imaging receiving lens, wherein the cross line emission lens, the suction assembly, the clamping assembly and the imaging receiving lens are coaxially arranged, the computer comprises a processing module for obtaining a center of a circle and generating a reference cross by acquiring an imaging cross rotation path emitted by the cross line emission lens through the imaging receiving lens, and a display screen for displaying the imaging cross and the reference cross.

[0009] The lens centering device suitable for the edging machine as described above, wherein the suction assembly is provided with a first imaging channel penetrating the suction assembly along the axial direction, the clamping assembly is provided with a second imaging channel penetrating the clamping assembly along the axial direction thereof, and the workpiece is located between the first imaging channel and the second imaging channel.

[0010] The lens centering device for the lens edger as described above, the suction assembly comprises a suction rotating shaft arranged on the mounting base, a suction device arranged on the suction rotating shaft and close to one end of the clamping assembly, and a first driving device arranged on the suction rotating shaft and away from the other end of the clamping assembly, the suction rotating shaft drives the suction device to rotate through the first driving device.

[0011] The lens centering device for the lens edger as described above, the clamping assembly comprises a clamping rotating shaft movably arranged on the mounting base, and a second driving device arranged on the clamping rotating shaft and away from the suction device, the second driving device drives the clamping rotating shaft to rotate to clamp and process the workpiece together with the suction device.

[0012] The lens centering device for the lens edger as described above, further comprises a clamping adjusting assembly arranged on the mounting base and connected with the clamping rotating shaft and movable along the axial direction of the clamping rotating shaft.

[0013] The lens centering device for the lens edger as described above, the clamping adjusting assembly comprises a first clamping adjusting mechanism connected with the clamping rotating shaft and driving the clamping rotating shaft to move close to or away from the suction device, and a second driving member connected with the first clamping adjusting mechanism, the output end of the second driving member is connected with the first clamping adjusting mechanism, so that the second driving member drives the first clamping adjusting mechanism and the clamping rotating shaft to move relative to each other along the axial direction of the clamping rotating shaft, the first clamping adjusting mechanism comprises a first sliding rail arranged on the outer wall of the mounting base and arranged along the axial direction of the clamping rotating shaft, a first sliding seat slidingly connected with the first sliding rail, and a first driving member connected with the first sliding seat and driving the clamping rotating shaft to move close to or away from the suction device.

[0014] The lens centering device for the lens edger as described above, further comprises a bottom plate connected with the mounting base, a toothed rail connected with the first sliding seat, a gear meshing with the toothed rail, and a handle connected with the gear through the bottom plate, the handle drives the gear to rotate, and in turn drives the toothed rail to drive the clamping rotating shaft to move close to or away from the suction device.

[0015] The lens centering device for the lens edger as described above, the first driving device comprises a servo motor, a driving gear connected with the output end of the servo motor, a left shaft linkage gear meshing with the driving gear, and a left shaft driven gear meshing with the left shaft linkage gear, the left shaft driven gear is connected with the suction rotating shaft and coaxially arranged.

[0016] The second driving device comprises a middle shaft linkage rod connected with the left shaft linkage gear, a right shaft linkage gear connected with the middle shaft linkage rod, and a right shaft driven gear engaged with the right shaft linkage gear, which is connected with the clamping shaft coaxially.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The lens centering device for the lens edger disclosed in the present application can solve the problem that the lens with large curvature cannot be precisely centered by high-speed rotation. By introducing the optical alignment system, the accuracy and efficiency of the centering operation are improved. The operator can adjust the lens workpiece according to the real-time image on the display screen to ensure the centering accuracy of the lens workpiece, which provides a reliable basis for subsequent lens edging and improves the processing quality and production efficiency of the spectacle lenses. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0021] Figure 1 is a three-dimensional view in the embodiments of the present application;

[0022] Figure 2 is a top view of Figure 1 ;

[0023] Figure 3 is a sectional view of Figure 2 at A-A;

[0024] Figure 4 is a partial three-dimensional view in the embodiments of the present application;

[0025] Figure 5 is a partial exploded view of Figure 4 ;

[0026] Figure 6 is a centering schematic view in the embodiments of the present application. DETAILED DESCRIPTION

[0028] In order to make the technical problems and beneficial effects of the technical solutions of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only intended to explain the present application and not to limit the present application.

[0029] Please refer to Figures 1 to 6 A lens centering device suitable for an edging machine, comprising a rack 1, a mounting base 2 arranged on the rack 1, a suction assembly 3 arranged on the mounting base 2 and used for adsorbing a workpiece and driving the workpiece to rotate, a clamping assembly 4 arranged on the mounting base 2 and corresponding to the suction assembly 3 to clamp the workpiece, a cross line emitting lens 5 arranged on the rack 1 at one side of the suction assembly 3, an imaging receiving lens 6 arranged on the rack 1 at one side of the clamping assembly 4, and a computer 7 electrically connected to the imaging receiving lens 6, wherein the cross line emitting lens 5, the suction assembly 3, the clamping assembly 4 and the imaging receiving lens 6 are coaxially arranged, the computer 7 comprises a processing module for obtaining a rotating path of an imaging cross 8 emitted by the cross line emitting lens 5 through the imaging receiving lens 6, thereby obtaining a center of a circle and generating a reference cross 9, and a display screen 10 for displaying the imaging cross 8 and the reference cross 9.

[0030] The lens centering device suitable for the edging machine of the present application drives the lens workpiece to rotate after adsorbing the lens workpiece through the suction assembly, the imaging cross emitted by the cross line emitting lens is captured by the imaging receiving lens after passing through the lens workpiece, and the center of the rotating imaging cross is obtained by the computer to obtain the reference cross. Then the suction assembly stops rotating, and the positional relationship between the imaging cross and the reference cross is displayed on the display screen. The operator can intuitively compare the display screen and manually adjust the position of the lens workpiece to make the imaging cross coincide with the reference cross, thereby completing the centering operation. This method not only solves the problem that the lens with large curvature is difficult to accurately center through high-speed rotation, but also improves the accuracy and efficiency of centering by introducing an optical alignment system. The operator can adjust according to the real-time image on the display screen to ensure the centering accuracy of the lens workpiece, providing a reliable basis for subsequent edging processing, thereby improving the processing quality and production efficiency of the spectacle lens.

[0031] Further, as a preferred embodiment of the present solution but not limited, the suction assembly 3 is provided with a first imaging channel 31 penetrating the suction assembly 3 along the axial direction, the clamping assembly 4 is provided with a second imaging channel 41 penetrating the clamping assembly 4 along the axial direction thereof, and the workpiece is located between the first imaging channel 31 and the second imaging channel 41.

[0032] In this embodiment, it is ensured that the imaging cross 8 emitted by the cross line emitting lens 5 can be captured clearly and accurately by the imaging receiving lens 6 after sequentially passing through the first imaging channel 31, the workpiece, and the second imaging channel 41. This not only improves the accuracy of the centering operation, but also simplifies the structure of the device and reduces error sources.

[0033] Further, as a preferred embodiment of the present scheme but not limited, the suction assembly 3 comprises a suction rotating shaft 32 arranged on the mounting base 2, a suction device 33 arranged on the suction rotating shaft 32 close to one end of the clamping assembly 4, and a first driving device 34 arranged on the suction rotating shaft 32 away from one end of the clamping assembly 4. The suction rotating shaft 32 drives the suction device 33 to rotate through the first driving device 34.

[0034] In this embodiment, the automatic suction and rotation function of the workpiece is realized. It is ensured that the workpiece can be stably adsorbed and rotated. When the suction assembly adsorbs the lens workpiece not in the center position, the imaging cross obtained by the imaging receiving lens will have a circular motion, thereby providing a basis for subsequent centering operation.

[0035] Further, as a preferred embodiment of the present scheme but not limited, the clamping assembly 4 comprises a clamping rotating shaft 42 movably arranged on the mounting base 2, and a second driving device 43 arranged on the clamping rotating shaft 42 away from one end of the suction device 33. The second driving device 43 drives the clamping rotating shaft 42 to rotate to clamp and process the workpiece in cooperation with the suction device 33.

[0036] In this embodiment, the processing error caused by the loosening of the workpiece is avoided. The second driving device 43 is further used to drive the clamping rotating shaft 42 to rotate, thereby improving the flexibility and precision of processing, ensuring that the workpiece always maintains the correct position and angle during the edge grinding process, and thereby improving the processing quality and efficiency.

[0037] Further, as a preferred embodiment of the present scheme but not limited, it further comprises a clamping adjusting assembly 11 arranged on the mounting base 2 and connected with the clamping rotating shaft 42 and movable relative to the clamping rotating shaft 42 along the axial direction of the clamping rotating shaft 42.

[0038] In this embodiment, the clamping adjusting assembly drives the clamping rotating shaft to move relative to the clamping rotating shaft along the axial direction of the clamping rotating shaft, which is beneficial to improve the stability of the clamping rotating shaft in clamping the workpiece, so that the workpiece has better centering effect and higher edge grinding precision.

[0039] Further, as a preferred embodiment of the present scheme but not limited, the clamping adjusting assembly 11 comprises a first clamping adjusting mechanism 111 connected with the clamping rotating shaft 42 and driving the clamping rotating shaft 42 to approach or move away from the adsorption device 33, and a second driving member 112 connected with the first clamping adjusting mechanism 111, the output end of the second driving member 112 being connected with the first clamping adjusting mechanism 111, so that the second driving member 112 simultaneously drives the first clamping adjusting mechanism 111 and the clamping rotating shaft 42 to relatively move along the axis direction of the clamping rotating shaft 42, and the first clamping adjusting mechanism 111 comprises a first sliding rail 1111 arranged on the outer wall of the mounting base 2 and arranged along the axis direction of the clamping rotating shaft 42, a first sliding seat 1112 in sliding connection with the first sliding rail 1111, and a first driving member 1113 connected with the first sliding seat 1112 and used for driving the clamping rotating shaft 42 to approach or move away from the adsorption device 33.

[0040] In the embodiment, the first sliding rail serves as a support structure, can provide stable support and guiding effect, ensures the first sliding seat to keep stable during movement, helps to reduce vibration of the first sliding seat during movement, and effectively improves the stability of the whole device. The cooperation of the first sliding rail and the first sliding seat enables the clamping rotating shaft to move accurately in the axial direction. By arranging the first sliding rail and the first sliding seat in cooperation, the friction and wear between parts can be reduced, and the service life of the device is effectively prolonged. Optionally, the first driving member can be a telescopic air cylinder or a telescopic hydraulic cylinder.

[0041] Further, as a preferred embodiment of the present scheme but not limited, the clamping adjusting assembly 11 comprises a first clamping adjusting mechanism 111 connected with the clamping rotating shaft 42 and driving the clamping rotating shaft 42 to approach or move away from the adsorption device 33, and a second driving member 112 connected with the first clamping adjusting mechanism 111, the output end of the second driving member 112 being connected with the first clamping adjusting mechanism 111, so that the second driving member 112 simultaneously drives the first clamping adjusting mechanism 111 and the clamping rotating shaft 42 to relatively move along the axis direction of the clamping rotating shaft 42, and the first clamping adjusting mechanism 111 comprises a first sliding rail 1111 arranged on the outer wall of the mounting base 2 and arranged along the axis direction of the clamping rotating shaft 42, a first sliding seat 1112 in sliding connection with the first sliding rail 1111, and a first driving member 1113 connected with the first sliding seat 1112 and used for driving the clamping rotating shaft 42 to approach or move away from the adsorption device 33.

[0042] In the embodiment, by connecting the bottom plate 12 on the mounting base 2, connecting the toothed rail 13 on the first sliding seat 1112, engaging the toothed gear 14, and connecting the handle 15 through the bottom plate 12 and the toothed gear 14, the rotation of the toothed gear 14 is driven by manually operating the handle 15, and then the toothed rail 13 drives the clamping rotating shaft 42 to approach or move away from the adsorption device 33. A simple and intuitive manual adjustment mode is provided, so that the operator can flexibly adjust the clamping position according to needs, and the reliability and stability of mechanical transmission ensure the accuracy and controllability of the adjustment process.

[0043] Further, as a preferred embodiment of the present scheme but not as a limitation, the first driving device 34 comprises a servo motor 341, a driving gear 342 connected to the output end of the servo motor 341, a left shaft linkage gear 343 meshing with the driving gear 342, and a left shaft driven gear 344 meshing with the left shaft linkage gear 343, the left shaft driven gear 344 being connected with and coaxially arranged with the suction shaft 32.

[0044] In the present embodiment, the rotational movement of the servo motor 341 is transmitted to the suction shaft 32 through the meshing transmission of the driving gear 342 and the left shaft linkage gear 343, and the further transmission of the left shaft linkage gear 343 and the left shaft driven gear 344, realizing the precise control and smooth driving of the suction device 33. This design takes advantage of the high precision and high response characteristics of the servo motor 341, enabling precise control of the rotational angle and speed of the suction shaft 32, thereby ensuring the accuracy and stability of the workpiece rotation, providing a reliable foundation for subsequent centering operations. The output end of the servo motor 341 is connected to the driving gear 342, the driving gear 342 meshes with the left shaft linkage gear 343, the left shaft linkage gear 343 meshes with the left shaft driven gear 344, and finally the left shaft driven gear 344 drives the suction shaft 32 to rotate. This multi-stage gear transmission not only provides sufficient torque and rotational speed, but also enables precise control of the rotational speed and acceleration of the suction shaft 32 through reasonable gear ratio design.

[0045] Further, as a preferred embodiment of the present scheme but not as a limitation, the second driving device 43 comprises a middle shaft linkage rod 431 connected to the left shaft linkage gear 343, a right shaft linkage gear 432 connected to the middle shaft linkage rod 431, and a right shaft driven gear 433 meshing with the right shaft linkage gear 432, the right shaft driven gear 433 being connected with and coaxially arranged with the clamping shaft 42.

[0046] In the present embodiment, the middle shaft linkage rod 431 drives the right shaft linkage gear 432 to rotate, and finally the right shaft driven gear 433 meshing with the right shaft linkage gear 432 drives the clamping shaft 42 to rotate. This design realizes the linkage of the first driving device 34 and the second driving device 43, enabling the suction assembly 3 and the clamping assembly 4 to rotate synchronously, ensuring the stability and consistency of the workpiece during machining.

[0047] The working principle of the present embodiment is as follows:

[0048] The lens centering device suitable for an edger of the application is characterized in that: the lens workpiece is attracted and rotated by the suction assembly, the imaging cross emitted by the cross line emission lens is captured by the imaging receiving lens after passing through the lens workpiece, the center of the imaging cross rotation is obtained by the computer to obtain the reference cross, then the suction assembly stops rotating, the position relationship between the imaging cross and the reference cross is displayed on the display screen, the operator can visually compare the display screen and manually adjust the position of the lens workpiece, so that the imaging cross and the reference cross coincide, thereby completing the centering operation. This way not only solves the problem that the lens with large curvature is difficult to achieve accurate centering through high-speed rotation, but also improves the accuracy and efficiency of centering by introducing an optical alignment system. The operator can adjust according to the real-time image on the display screen to ensure the centering accuracy of the lens workpiece, providing a reliable basis for subsequent edging processing, thereby improving the processing quality and production efficiency of the spectacle lens.

[0049] The above is an embodiment provided in combination with specific content, and it is not intended that the specific implementation of the application is limited to these descriptions. Any approximation to the method structure of the application, or any technical deduction or replacement made on the basis of the concept of the application, should be considered as the protection scope of the application.

Claims

1. A lens centering device for an edger, characterized in that, The device comprises a rack (1), a mounting base (2) arranged on the rack (1), a suction assembly (3) arranged on the mounting base (2) and used for adsorbing a workpiece and driving the workpiece to rotate, a clamping assembly (4) arranged on the mounting base (2) and corresponding to the suction assembly (3) to clamp the workpiece, a cross line emitting lens (5) arranged on the rack (1) at one side of the suction assembly (3), an imaging receiving lens (6) arranged on the rack (1) at one side of the clamping assembly (4), and a computer (7) electrically connected to the imaging receiving lens (6), wherein the cross line emitting lens (5), the suction assembly (3), the clamping assembly (4) and the imaging receiving lens (6) are coaxially arranged, the computer (7) comprises a processing module for obtaining a rotating path of an imaging cross (8) emitted by the cross line emitting lens (5) through the imaging receiving lens (6) to obtain a center of a circle and generate a reference cross (9), and a display screen (10) for displaying the imaging cross (8) and the reference cross (9).

2. A lens centering device for an edger as claimed in claim 1, characterized in that The suction assembly (3) is provided with a first imaging channel (31) penetrating the suction assembly (3) along an axial direction, the clamping assembly (4) is provided with a second imaging channel (41) penetrating the clamping assembly (4) along an axial direction thereof, and the workpiece is located between the first imaging channel (31) and the second imaging channel (41).

3. A lens centering device for an edger as claimed in claim 1, wherein, The suction assembly (3) comprises a suction rotating shaft (32) arranged on the mounting base (2), a suction device (33) arranged on the suction rotating shaft (32) and close to one end of the clamping assembly (4), and a first driving device (34) arranged on the suction rotating shaft (32) and away from one end of the clamping assembly (4), wherein the suction rotating shaft (32) drives the suction device (33) to rotate through the first driving device (34).

4. A lens centering device for an edger as claimed in claim 3, wherein, The clamping assembly (4) comprises a clamping rotating shaft (42) movably arranged on the mounting base (2), and a second driving device (43) arranged on the clamping rotating shaft (42) and away from one end of the suction device (33), wherein the second driving device (43) drives the clamping rotating shaft (42) to rotate to clamp and process the workpiece in cooperation with the suction device (33).

5. A lens centering device for an edger as claimed in claim 4, wherein, The device further comprises a clamping adjusting assembly (11) arranged on the mounting base (2) and connected to the clamping rotating shaft (42) and capable of moving relatively along an axial direction of the clamping rotating shaft (42).

6. A lens centering device for an edger as claimed in claim 5, wherein, The clamping adjusting assembly (11) comprises a first clamping adjusting mechanism (111) connected with the clamping rotating shaft (42) and driving the clamping rotating shaft (42) to move close to or away from the adsorption device (33), and a second driving member (112) connected with the first clamping adjusting mechanism (111), and the output end of the second driving member (112) is connected with the first clamping adjusting mechanism (111), so that the second driving member (112) drives the first clamping adjusting mechanism (111) and the clamping rotating shaft (42) to move relatively along the axis direction of the clamping rotating shaft (42), and the first clamping adjusting mechanism (111) comprises a first sliding rail (1111) arranged on the outer wall of the mounting base (2) and arranged along the axis direction of the clamping rotating shaft (42), a first sliding seat (1112) slidably connected with the first sliding rail (1111), and a first driving member (1113) for driving the clamping rotating shaft (42) to move close to or away from the adsorption device (33) and connected with the first sliding seat (1112).

7. A lens centering device for an edger as claimed in claim 6, characterized in that Further comprising a bottom plate (12) connected with the mounting base (2), a toothed rail (13) connected with the first sliding seat (1112), a gear (14) engaged with the toothed rail (13), and a handle (15) connected with the gear (14) through the bottom plate (12), the handle (15) drives the gear (14) to rotate, and in turn drives the toothed rail (13) to drive the clamping rotating shaft (42) to move close to or away from the adsorption device (33).

8. A lens centering device for an edger as claimed in claim 4, wherein, The first driving device (34) comprises a servo motor (341), a driving gear (342) connected with the output end of the servo motor (341), a left shaft linkage gear (343) engaged with the driving gear (342), and a left shaft driven gear (344) engaged with the left shaft linkage gear (343), and the left shaft driven gear (344) is connected with the suction rotating shaft (32) and coaxially arranged.

9. A lens centering device for an edger as claimed in claim 8, characterized in that The second driving device (43) comprises a middle shaft linkage rod member (431) connected with the left shaft linkage gear (343), a right shaft linkage gear (432) connected with the middle shaft linkage rod member (431), and a right shaft driven gear (433) engaged with the right shaft linkage gear (432), and the right shaft driven gear (433) is connected with the clamping rotating shaft (42) and coaxially arranged.

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