Full-automatic lens centering device

Abstract

The utility model belongs to the technical field of optical lens machining equipment, and particularly relates to a full-automatic lens centering device. Comprising a rack, a mounting base, a suction assembly, a cross curve transmitting lens, an imaging receiving lens, a computer and a correction mechanism, and an imaging cross emitted by the cross curve transmitting lens sequentially penetrates through the suction assembly and a to-be-processed lens and then is received by the imaging receiving lens. Through cooperation of the cross curve transmitting lens and the imaging receiving lens, the imaging cross position of the lens in the rotating process is monitored in real time, and the computer calculates the circle center of the lens according to data and generates a reference cross coordinate. And then, the computer drives the suction assembly to adjust the lens to a position to be adjusted, and further generates an imaging cross coordinate. Through comparison with the reference cross coordinate, the computer can accurately calculate the offset of the lens and guide the correction mechanism to carry out corresponding position correction.

Description

TECHNICAL FIELD

[0002] The application belongs to the technical field of optical lens processing equipment, and particularly relates to a full-automatic lens centering device. BACKGROUND

[0004] The lens centering and edging machine is a mechanical equipment for processing spectacle lenses. Through the lens centering and 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 adsorbing the lens through the suction assembly and rotating at high speed. However, for lenses with large curvature, the lens cannot be stably centered due to the significant centrifugal force when rotating at high speed. 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, the lenses with large curvature need to be centered manually by manual calibration. However, this method depends on the skills and experience of the operator, and is prone to unstable centering accuracy, low efficiency, high labor intensity and errors. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the problem of unstable centering accuracy and low efficiency caused by manual centering of lenses with large curvature in the prior art, the application provides a full-automatic lens centering device.

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

[0008] A full-automatic lens centering device, comprising a rack, a mounting base provided on the rack, a suction assembly provided on the mounting base and used for adsorbing and driving a lens to be processed to rotate, a cross line emission lens provided on the rack at one side of the suction assembly, an imaging receiving lens provided on the rack and coaxially arranged with the cross line emission lens and the suction assembly, a computer electrically connected with the imaging receiving lens and the suction assembly and used for deriving a center of a circle according to an imaging cross and generating a reference cross coordinate, driving the suction assembly to drive the lens to be processed to rotate to a position to be adjusted and generating the imaging cross coordinate, and a correction mechanism electrically connected with the computer and used for correcting the position of the lens to be processed, the imaging cross emitted by the cross line emission lens is sequentially received by the imaging receiving lens after passing through the suction assembly and the lens to be processed.

[0009] The correction mechanism of the full-automatic lens centering device as described above comprises:

[0010] A horizontal module, which is provided on the rack and can move on the rack in the horizontal direction;

[0011] A lifting module is arranged on the horizontal module and can be lifted along the vertical direction on the horizontal module;

[0012] A positioning module is arranged on the lifting module and is used to push the lens to be processed from an adjusted position to a reference position, and the horizontal module cooperates with the lifting module to move the positioning module to a processing station.

[0013] The full-automatic lens centering device as described above, wherein the suction assembly is provided with an imaging channel penetrating through the suction assembly along the axial direction.

[0014] The full-automatic lens centering device as described above, wherein the positioning module comprises a pushing frame arranged on the driving end of the lifting module, the pushing frame is provided with a lifting driving part capable of being lifted along the vertical direction, and the driving end of the lifting driving part is provided with an abutting part used to push the lens to be processed.

[0015] The full-automatic lens centering device as described above, wherein the horizontal module comprises:

[0016] An X-axis sliding rail is arranged on the rack and extends along the X-axis direction.

[0017] An X-axis sliding seat is slidingly arranged on the X-axis sliding rail.

[0018] An X-axis driving part is arranged on the rack and is used to drive the X-axis sliding seat to move along the X-axis sliding rail.

[0019] A Y-axis sliding rail is arranged on the X-axis sliding seat and extends along the Y-axis direction perpendicular to the X-axis.

[0020] A Y-axis sliding seat is slidingly arranged on the Y-axis sliding rail and is connected with the lifting module.

[0021] A Y-axis driving part is arranged on the X-axis sliding seat and is used to drive the Y-axis sliding seat to move along the Y-axis sliding rail.

[0022] The full-automatic lens centering device as described above, wherein the suction assembly comprises a suction rotating shaft arranged on the mounting base, a suction device arranged at one end of the suction rotating shaft, and a first driving device arranged at the other end of the suction rotating shaft, and the suction rotating shaft drives the suction device to rotate through the first driving device.

[0023] The full-automatic lens centering device as described above, wherein the reference position corresponds to the X coordinate and the Y coordinate of the imaging cross being zero and coinciding with the coordinates of the reference cross, and the adjusted position corresponds to the X coordinate of the imaging cross being zero and the Y-axis coordinate being positive.

[0024] The full-automatic lens centering device as described above further comprises a display screen electrically connected to the computer and displaying the relative positions of the imaging cross and the reference cross.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] The full-automatic lens centering device of the present application, through the cooperation of the cross line emitting lens and the imaging receiving lens, monitors the imaging cross position of the lens in the rotating process in real time, and the computer calculates the center of the lens and generates the reference cross coordinates according to the data. Subsequently, the computer drives the suction assembly to adjust the lens to the position to be adjusted, and further generates the imaging cross coordinates. By comparing with the reference cross coordinates, the computer can accurately calculate the offset of the lens and guide the correction mechanism to perform the corresponding position correction. The dependence on the skills and experience of the operator is eliminated, the stability of the centering accuracy is ensured, and the production efficiency is improved. In addition, since this process does not require manual intervention, the occurrence of human errors is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0028] 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 labor.

[0029] Figure 1 is a three-dimensional view in the embodiments of the present application;

[0030] Figure 2 is a top view of Figure 1 ;

[0031] Figure 3 is a sectional view of Figure 2 at A-A;

[0032] Figure 4 is a three-dimensional view of the correction mechanism in the embodiments of the present application;

[0033] Figure 5 is a centering schematic view in the embodiments of the present application;

[0034] Figure 6 is a schematic view of the position to be adjusted and the reference position in the embodiments of the present application.

CONCRETE EMBODIMENT

[0036] 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.

[0037] Please refer to Figures 1 to 6 An automatic lens centering device, comprising a frame 1, a mounting base 2 arranged on the frame 1, a suction assembly 3 arranged on the mounting base 2 and used for sucking and rotating a lens to be processed, a cross line emitting lens 4 arranged on the frame 1 and located on one side of the suction assembly 3, an imaging receiving lens 5 arranged on the frame 1 and coaxially arranged with the cross line emitting lens 4 and the suction assembly 3, a computer 9 electrically connected with the imaging receiving lens 5 and the suction assembly 3 and used for obtaining a center of a circle and generating a reference cross 7 coordinate according to a rotating path of an imaging cross 6, and a correction mechanism 10 electrically connected with the computer 9 and used for correcting a position of the lens to be processed, the imaging cross 6 emitted by the cross line emitting lens 4 is received by the imaging receiving lens 5 after sequentially passing through the suction assembly 3 and the lens to be processed.

[0038] In the embodiment, the imaging cross position of the lens in the rotating process is monitored in real time through the cooperation of the cross line emitting lens and the imaging receiving lens. The computer obtains the highest point, the lowest point, the leftmost point and the rightmost point of the rotating path of the imaging cross, then connects the highest point and the lowest point into a straight line and connects the leftmost point and the rightmost point into a straight line, takes the intersection point as the center of the circle, and generates the reference cross coordinate. Subsequently, the computer drives the suction assembly to adjust the lens to a to-be-adjusted position and further generates the imaging cross coordinate. Through comparison with the reference cross coordinate, the computer can accurately calculate the offset of the lens and guide the correction mechanism to perform corresponding position correction. The dependence on the skills and experience of operators is eliminated, the stability of the centering accuracy is ensured, and the production efficiency is improved. In addition, since the process does not require manual intervention, the occurrence of human errors is reduced;

[0039] The computer calculates an included angle a between the reference cross positive Y axis according to a straight line connecting the current origin coordinate of the imaging cross and the origin coordinate of the reference cross, drives the suction assembly to rotate the lens to be processed to the to-be-adjusted position when the included angle a is 0°, and stops rotating to reach the to-be-adjusted position. When the included angle a is less than 5°, the rotating speed is slowed down to ensure the accuracy;

[0040] The computer calculates the offset along the Y-axis according to the origin coordinates of the imaging cross at the position to be adjusted and the origin coordinates of the reference cross, drives the correction mechanism to move and push the lens to be processed to the alignment position to achieve the automatic correction, and approaches the reference position. When the offset along the Y-axis is less than 5mm, the moving speed is slowed down to ensure the accuracy.

[0041] Further, as a preferred embodiment of the present scheme but not limited, the correction mechanism 10 comprises:

[0042] A horizontal module 101 is arranged on the rack 1 and can move on the rack 1 in the horizontal direction;

[0043] A lifting module 102 is arranged on the horizontal module 101 and can lift on the horizontal module 101 in the vertical direction;

[0044] A positioning module 103 is arranged on the lifting module 102 and is used to push the lens to be processed from the position to be adjusted 8 to the reference position 11. The horizontal module 101 and the lifting module 102 cooperate to move the positioning module 103 to the processing station 12.

[0045] In the embodiment, the positioning module 103 can be accurately positioned in the three-dimensional space, so that the lens to be processed can be accurately pushed from the position to be adjusted 8 to the reference position 11. This design not only improves the accuracy and stability of the centering operation, but also significantly improves the production efficiency.

[0046] Further, as a preferred embodiment of the present scheme but not limited, the suction assembly 3 is provided with an imaging channel 31 penetrating the suction assembly 3 along the axial direction.

[0047] In the embodiment, the imaging cross 6 emitted by the cross line emitting lens 4 can pass through the suction assembly 3 without obstruction and be accurately projected onto the lens to be processed, and then be clearly received by the imaging receiving lens 5. This structure avoids imaging errors caused by the blocking of the suction assembly 3, and improves the centering accuracy.

[0048] Further, as a preferred embodiment of the present scheme but not limited, the positioning module 103 comprises a pushing frame 1031 arranged on the driving end of the lifting module 102, the pushing frame 1031 is provided with a lifting driving piece 1032 which can lift in the vertical direction, and the driving end of the lifting driving piece 1032 is provided with an abutting piece 1033 for pushing the lens to be processed.

[0049] In this embodiment, the precise pushing positioning of the lens to be processed is achieved by setting a pushing frame 1031 at the driving end of the lifting module 102 and configuring a lifting driving piece 1032 capable of lifting in the vertical direction on the pushing frame 1031. This design ensures that the lens can obtain stable and controllable displacement when being pushed to the reference position 11, thereby improving the accuracy and reliability of the centering operation. The abutting piece 1033 on the driving end of the lifting driving piece 1032 directly contacts the lens, and the precise adjustment of the lens is realized through the vertical movement of the abutting piece 1033, thereby reducing the deviation caused by mechanical errors or human operation.

[0050] Further, as a preferred embodiment of the present scheme but not limited, the horizontal module 101 comprises:

[0051] An X-axis sliding rail 1011 is arranged on the rack 1 and extends along the X-axis direction;

[0052] An X-axis sliding seat 1012 is slidingly arranged on the X-axis sliding rail 1011;

[0053] An X-axis driving piece 1013 is arranged on the rack 1 and is used to drive the X-axis sliding seat 1012 to move along the X-axis sliding rail 1011;

[0054] A Y-axis sliding rail 1014 is arranged on the X-axis sliding seat 1012 and extends along the Y-axis direction perpendicular to the X-axis;

[0055] A Y-axis sliding seat 1015 is slidingly arranged on the Y-axis sliding rail 1014 and is connected with the lifting module 102;

[0056] A Y-axis driving piece 1016 is arranged on the X-axis sliding seat 1012 and is used to drive the Y-axis sliding seat 1015 to move along the Y-axis sliding rail 1014.

[0057] In this embodiment, the X-axis driving piece and the Y-axis driving piece are driven by servo motors, and the structure design of double-axis linkage enables the alignment module 103 to cover a wider working range and realize positioning at any position in the horizontal plane, thereby improving the flexibility and accuracy of the centering operation. The independent control of the X-axis and Y-axis driving pieces enables the module to quickly respond to the instructions of the computer and perform efficient position adjustment, meeting the dual requirements of speed and accuracy for automatic processing.

[0058] 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 at one end of the suction rotating shaft 32, and a first driving device 34 arranged at the other end of the suction rotating shaft 32. The suction rotating shaft 32 drives the suction device 33 to rotate through the first driving device 34.

[0059] In this embodiment, the first driving device adopts a servo motor, a stepper motor, etc., to realize stable adsorption and precise rotation of the lens to be processed. This design ensures that the lens can be firmly fixed during the centering process, avoiding deviation or falling due to poor adsorption, and improving the reliability and safety of the centering operation. The first driving device 34 directly drives the adsorption device 33 to rotate through the suction shaft 32, simplifying the transmission structure, reducing energy loss, and improving the precision and efficiency of the rotary motion.

[0060] Further, as a preferred embodiment of the present scheme but not limited, the reference position 11 corresponds to the X and Y coordinates of the imaging cross 6 being zero and coinciding with the coordinates of the reference cross 7, and the to-be-adjusted position 8 corresponds to the X coordinate of the imaging cross 6 being zero and the Y axis coordinate being positive.

[0061] In this embodiment, it is ensured that the optical center of the lens is accurately aligned with the rotation axis of the edging machine after the centering operation is completed, thereby ensuring the accuracy and consistency of the processing. The to-be-adjusted position 8 is set to the X coordinate of the imaging cross 6 being zero and the Y axis coordinate being positive, facilitating the position adjustment of the correction mechanism 10 from top to bottom. The computer 9 can accurately calculate the deviation of the lens and guide the correction mechanism 10 to perform accurate adjustment operation, improving the efficiency and precision of the centering.

[0062] Further, as a preferred embodiment of the present scheme but not limited, it further includes a display screen 13 electrically connected with the computer 9 and displaying the relative positions of the imaging cross 6 and the reference cross 7.

[0063] In this embodiment, the relative positions of the imaging cross 6 and the reference cross 7 are displayed in real time, and the operator can intuitively observe the centering process and result of the lens. This visual design not only improves the convenience of operation, but also enhances the confidence in the centering precision. The display screen 13 can update the position change of the imaging cross 6 in real time, so that the operator can timely find and correct the deviation, ensuring the accuracy of the centering operation. In addition, the display screen 13 can also display other related information, such as the deviation of the lens, the adjustment steps and the processing state, etc., to provide comprehensive decision support for the operator. The function of the display screen 13 can be further expanded, for example, integrating a touch operation interface, so that the operator can directly set parameters, input commands and troubleshoot on the screen, improving the efficiency and experience of human-computer interaction. Or, the display screen 13 is combined with remote control technology to realize remote monitoring and operation of the centering equipment, facilitating equipment maintenance and technical support in the production site.

[0064] The working principle of the present embodiment is as follows:

[0065] The application discloses a full-automatic lens centering device. The cross line emitting lens and the imaging receiving lens are matched to monitor the imaging cross position of the lens in the rotating process in real time. The computer calculates the center of the lens and generates the reference cross coordinate according to the data. Then, the computer drives the suction assembly to adjust the lens to the position to be adjusted and further generates the imaging cross coordinate. By comparison with the reference cross coordinate, the computer can accurately calculate the offset of the lens and guide the correction mechanism to perform the corresponding position correction. The dependence on the skills and experience of operators is eliminated, the stability of the centering accuracy is ensured, and the production efficiency is improved. In addition, since the process does not need manual intervention, the occurrence of human errors is reduced.

[0066] The above is the embodiment provided in combination with the specific content, and it is not considered that the specific implementation of the application is limited to the description. Any similar structure or method as the application or any technical deduction or replacement made on the basis of the concept of the application should be regarded as the protection scope of the application.

Claims

1. A fully automatic lens centering device, 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 sucking and rotating a lens to be processed, a cross line emitting lens (4) arranged on the rack (1) and located on one side of the suction assembly (3), an imaging receiving lens (5) arranged on the rack (1) and coaxially arranged with the cross line emitting lens (4) and the suction assembly (3), a computer (9) electrically connected with the imaging receiving lens (5) and the suction assembly (3) and used for obtaining a center of a circle according to a rotating path of an imaging cross (6) and generating a reference cross (7) coordinate, and a correction mechanism (10) electrically connected with the computer (9) and used for correcting a position of the lens to be processed, and the imaging cross (6) emitted by the cross line emitting lens (4) is received by the imaging receiving lens (5) after sequentially passing through the suction assembly (3) and the lens to be processed.

2. The full-automatic lens centering device according to claim 1, characterized in that, The correction mechanism (10) comprises: a horizontal module (101) arranged on the rack (1) and capable of moving on the rack (1) in a horizontal direction; a lifting module (102) arranged on the horizontal module (101) and capable of lifting on the horizontal module (101) in a vertical direction; a positioning module (103) arranged on the lifting module (102) and used for pushing the lens to be processed from an adjusting position (8) to a reference position (11), and the horizontal module (101) and the lifting module (102) are cooperated to move the positioning module (103) to a processing station (12).

3. The full-automatic lens centering device according to claim 1, characterized in that, An imaging channel (31) penetrating the suction assembly (3) in an axial direction is arranged in the suction assembly (3).

4. The full-automatic lens centering device according to claim 2, characterized in that, The positioning module (103) comprises a pushing frame (1031) arranged on a driving end of the lifting module (102), a lifting driving part (1032) arranged on the pushing frame (1031) and capable of lifting in a vertical direction, and an abutting part (1033) arranged on a driving end of the lifting driving part (1032) and used for pushing the lens to be processed.

5. The fully automatic lens centering device according to claim 2, characterized in that, The horizontal module (101) comprises: an X-axis sliding rail (1011) arranged on the rack (1) and extending in an X-axis direction; an X-axis sliding seat (1012) slidingly arranged on the X-axis sliding rail (1011); an X-axis driving part (1013) arranged on the rack (1) and used for driving the X-axis sliding seat (1012) to move along the X-axis sliding rail (1011); a Y-axis sliding rail (1014) arranged on the X-axis sliding seat (1012) and extending in a Y-axis direction perpendicular to the X-axis; a Y-axis sliding seat (1015) slidingly arranged on the Y-axis sliding rail (1014) and connected with the lifting module (102). A Y-axis driving member (1016) is arranged on the X-axis sliding seat (1012) and used to drive the Y-axis sliding seat (1015) to move along the Y-axis sliding rail (1014).

6. The fully automatic lens centering device of claim 1, wherein, The suction assembly (3) comprises a suction rotating shaft (32) arranged on the mounting base (2), a suction device (33) arranged at one end of the suction rotating shaft (32), and a first driving device (34) arranged at the other end of the suction rotating shaft (32), wherein the suction rotating shaft (32) drives the suction device (33) to rotate through the first driving device (34).

7. The fully automatic lens centering device according to claim 2, characterized in that The reference position (11) corresponds to the X coordinate and Y coordinate of the imaging cross (6) being zero and coinciding with the coordinate of the reference cross (7), and the position to be adjusted (8) corresponds to the X coordinate of the imaging cross (6) being zero and the Y coordinate being positive.

8. The fully automatic lens centering device according to claim 3, wherein, The display screen (13) is electrically connected with the computer (9) and displays the relative positions of the imaging cross (6) and the reference cross (7).

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