Visual lens centering equipment

Abstract

The utility model discloses a visual lens centering device. The visual lens centering device comprises a light source emitting module and an imaging receiving module. The centering rotary drum and the centering clamping drum are each provided with a light hole penetrating in the axial direction. The light source emitting module and the imaging receiving module are provided with optical axes which are coaxial with the centering rotary drum and the centering clamping drum. And the centering rotating drum and the centering clamping drum are arranged between the light source emitting module and the imaging receiving module. According to the visual lens centering equipment, the centering rotating cylinder and the centering clamping cylinder are arranged to be of a hollow structure, and the lens to be machined is detected in real time through the light source emitting module and the imaging receiving module, so that the eccentric clamping condition is avoided, and the centering precision of lens machining is improved.

Description

Technical Field

[0001] This utility model relates to the field of lens processing equipment technology, and in particular to a visual lens centering device. Background Technology

[0002] Lenses are a crucial component of optical products such as lenses. The centering accuracy of a lens plays a critical role in the overall image quality of the lens; errors in centering accuracy directly affect the lens's resolving power. Therefore, optical manufacturers have set higher requirements for the centering accuracy of lenses, aiming to produce lenses with higher centering precision. When grinding lenses using a centering edging machine, the lens needs to be clamped. While mechanical centering is efficient, its accuracy is low; the lens's centering can only be checked and determined after processing. To produce lenses with high centering accuracy, the centering clamping method during lens processing also needs improvement. Utility Model Content

[0003] The purpose of this invention is to provide a visual lens centering device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0005] A visual lens centering device includes: a centering rotary cylinder, a centering clamp, a clamping drive mechanism, and a rotation drive mechanism. The centering rotary cylinder and the centering clamp are coaxially arranged. The clamping drive mechanism drives the centering clamp to move axially, and the rotation drive mechanism drives the centering rotary cylinder and the centering clamp to rotate. It also includes a light source emitting module and an imaging receiving module. Both the centering rotary cylinder and the centering clamp have axially penetrating light-transmitting holes. The light source emitting module and the imaging receiving module have optical axes coaxially arranged with the centering rotary cylinder and the centering clamp. The centering rotary cylinder and the centering clamp are disposed between the light source emitting module and the imaging receiving module. This visual lens centering device uses a hollow structure for the centering rotary cylinder and the centering clamp, and performs real-time detection of the lens to be processed through the light source emitting module and the imaging receiving module, thereby avoiding eccentric clamping and improving the centering accuracy of lens processing.

[0006] The visual lens centering device provided by this utility model has at least the following beneficial effects: the clamping drive mechanism can drive the centering clamp to press against the centering rotating cylinder, thereby clamping the lens between the centering clamp and the centering rotating cylinder. After the lens is clamped, the light source emitting module can emit light, which passes through the lens along the light-transmitting hole and is received by the imaging receiving module, thereby determining the lens clamping misalignment based on the imaging result of the light. When the rotation drive mechanism drives the centering rotating cylinder and the centering clamp to rotate, it can also further determine the correction range of the lens clamping based on the image sway rotation.

[0007] As a further improvement to the above technical solution, a base is included, the base having a processing space, and the centering rotary cylinder and the centering clamp are respectively disposed on the front and rear sides of the processing space and connected to the base.

[0008] As a further improvement to the above technical solution, the base has a cylindrical cavity that extends through the front and rear, and the centering clamp is movably disposed in the cavity so that the centering clamp can rotate and move back and forth relative to the base.

[0009] As a further improvement to the above technical solution, the clamping drive mechanism includes a clamping drive unit and a clamping drive component. The clamping drive component is rotatably connected to the centering clamp, and the clamping drive unit is used to drive the clamping drive component to move back and forth relative to the base.

[0010] As a further improvement to the above technical solution, the clamping drive component includes a first drive member and a second drive member, the first drive member and the second drive member are elastically connected in the front-rear direction, and the first drive member and the second drive member are respectively connected to the clamping drive unit and the centering clamp.

[0011] As a further improvement to the above technical solution, the base is fixedly provided with a control handle, and the end of the control handle has a control button that is electrically connected to the rotary drive mechanism.

[0012] As a further improvement to the above technical solution, the centering drum and the centering clamp are synchronously driven and connected.

[0013] As a further improvement to the above technical solution, the rotary drive mechanism includes two synchronously rotating drive gears, and both the centering drum and the centering clamp are coaxially provided with driven gears, and the two drive gears respectively engage with the two driven gears.

[0014] As a further improvement to the above technical solution, the imaging receiving module includes a CCD camera and a display screen, wherein the CCD camera is connected to the display screen.

[0015] As a further improvement to the above technical solution, the CCD camera is also provided with a centering focusing lens and a magnifying lens on the side facing the centering rotating cylinder. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a side sectional view of an embodiment of the visual lens centering device provided by this utility model;

[0018] Figure 2 This is a side sectional view of an embodiment of the visual lens centering device provided by this utility model;

[0019] Figure 3 This is a top view of an embodiment of the visual lens centering device provided by this utility model.

[0020] In the diagram: 100-Base, 110-Processing space, 120-Control handle, 121-Control button, 200-Centering rotary drum, 300-Centering clamp, 400-Clamping drive mechanism, 410-Clamping drive unit, 420-Clamping drive component, 421-First drive component, 422-Second drive component, 500-Rotation drive mechanism, 510-Rotation drive unit, 520-Drive shaft, 530-Drive gear, 540-Driven gear, 600-Light source emitting module, 610-Detection light source, 620-Light source lens, 700-Imaging receiving module, 710-CCD camera, 720-Display screen, 730-Centering focusing lens, 740-Magnifying lens. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Reference Figures 1 to 3 The present invention provides the following embodiments of a visual lens centering device:

[0026] A visual lens centering device includes: a centering rotary cylinder 200, a centering clamping cylinder 300, a clamping drive mechanism 400, and a rotation drive mechanism 500.

[0027] The centering drum 200 and the centering clamp 300 are coaxially arranged. The clamping drive mechanism 400 is used to drive the centering clamp 300 to move axially, so that the centering clamp 300 can axially abut against the centering drum 200. The rotation drive mechanism 500 is used to drive the centering drum 200 and the centering clamp 300 to rotate.

[0028] The visualization lens centering device further includes a light source emitting module 600 and an imaging receiving module 700. Both the centering rotating cylinder 200 and the centering clamping cylinder 300 have axially penetrating light-transmitting holes. The light source emitting module 600 and the imaging receiving module 700 have optical axes coaxially arranged with the centering rotating cylinder 200 and the centering clamping cylinder 300. The centering rotating cylinder 200 and the centering clamping cylinder 300 are located between the light source emitting module 600 and the imaging receiving module 700.

[0029] In practical use, the clamping drive mechanism 400 can drive the centering clamp 300 to press against the centering rotating cylinder 200, thereby clamping the lens between the centering clamp 300 and the centering rotating cylinder 200. After the lens is clamped, the light source emitting module 600 can emit light. The light passes through the lens along the light-transmitting hole and is received by the imaging receiving module 700, thereby determining the lens clamping misalignment based on the imaging result of the light. When the rotation drive mechanism 500 drives the centering rotating cylinder 200 and the centering clamp 300 to rotate, it can also further determine the correction range of the lens clamping based on the image sway rotation.

[0030] The visualization lens centering device of this embodiment has a base 100. The centering rotating cylinder 200, the centering clamping cylinder 300, the clamping drive mechanism 400, and the rotation drive mechanism 500 are all mounted on the base 100.

[0031] The base 100 has a machining space 110 in its middle. The centering rotary cylinder 200 and the centering clamp 300 are respectively disposed on the front and rear sides of the machining space 110 and are both connected to the base 100. In this embodiment, the centering rotary cylinder 200 and the centering clamp 300 are arranged front to back, with the centering rotary cylinder 200 disposed on the front side of the machining space 110. The rear section of the centering rotary cylinder 200 and the front end of the centering clamp 300 are both disposed within the machining space 110.

[0032] The processing space 110 has an open opening. In actual use, the lens is placed through the opening and clamped within the processing space 110 by the centering rotary cylinder 200 and the centering clamp 300. A grinding mechanism is located on the other side of the processing space 110 away from the opening to grind the edge of the lens. To prevent grinding debris or polishing fluid from splashing, the opening is equipped with a flip-open cover. The cover can be opened to clamp or remove the lens, and can be closed during the grinding process to prevent splashing, affecting the equipment environment, or causing safety accidents. In this embodiment, the cover is made of transparent material to facilitate observation of the lens processing.

[0033] The base 100 has a cylindrical rotating cavity extending front to back. The rotating cavity passes through the base 100 and through the machining space 110. The centering cylinder 200 is coaxially rotatably disposed in the rotating cavity at the front of the machining space 110. The centering clamp 300 is movably disposed in the rotating cavity at the rear of the machining space 110, so that the centering clamp 300 can rotate relative to the base 100 about its own axis of rotation and move back and forth relative to the base 100.

[0034] The clamping drive mechanism 400 of this embodiment includes a clamping drive unit 410 and a clamping drive member 420. The clamping drive member 420 is rotatably connected to the centering clamp 300. The clamping drive unit 410 has a clamping drive end that is drively connected to the clamping drive member and causes the clamping drive member to move back and forth relative to the base 100.

[0035] The clamping drive unit 410 can be a linear drive component such as a cylinder, electric push rod, hydraulic push rod, or lead screw and nut drive assembly. The clamping drive unit 410 drives the clamping drive component 420 to move the centering clamp 300 back and forth relative to the base 100, thereby achieving axial clamping between the centering clamp 300 and the centering rotary drum 200.

[0036] Furthermore, the clamping drive component 420 includes a first drive member 421 and a second drive member 422. The first drive member 421 and the second drive member 422 are elastically connected in the front-rear direction, and the first drive member 421 and the second drive member 422 are respectively connected to the clamping drive unit 410 and the centering clamp 300.

[0037] In this embodiment, both the first driving member 421 and the second driving member 422 are in the shape of thin plates. The first driving member 421 is perpendicular to the axial direction of the centering clamp 300. The rear part of the centering clamp 300 is coaxially provided with an annular extending groove. One end of the first driving member 421 is rotatably sleeved in the groove, so that the centering clamp 300 can rotate relative to the first driving member 421, and at the same time move back and forth synchronously with the first driving member 421.

[0038] The first driving member 421 and the second driving member 422 are elastically connected front and rear, so that when the clamping driving unit 410 drives the first driving member 421 to press forward, the centering clamp 300 can clamp the lens under the action of elastic force, avoiding the situation where the clamping force between the centering clamp 300 and the centering rotating cylinder 200 is too large and damages the lens. In this embodiment, the clamping driving unit 410 is a telescopic cylinder arranged front and rear. The first driving member 421 and the second driving member 422 can be elastically connected by a spring provided between them. A cylinder can also be provided between the first driving member 421 and the second driving member 422 to form a gas spring structure to achieve elastic connection. It is worth noting that the cylinder diameter between the first driving member 421 and the second driving member 422 is smaller than the cylinder diameter of the clamping driving unit 410.

[0039] In some embodiments, the rotary drive mechanism 500 includes two drive motors respectively drivenly connected to the centering drum 200 and the centering clamp 300. To avoid obstructing imaging by avoiding the light-transmitting hole and the optical axis of the light source emitting module 600 and the imaging receiving module 700, both drive motors are eccentrically arranged with respect to the centering drum 200 and the centering clamp 300. The drive motors are connected to the centering drum 200 and the centering clamp 300 by other transmission methods such as belt drive, gear drive, chain drive, or worm gear drive.

[0040] To avoid damage to the lens caused by relative sliding between the centering drum 200 and the centering clamp 300 due to the difference in rotation speed between them, in this embodiment, the centering drum 200 and the centering clamp 300 are synchronously connected.

[0041] Specifically, the rotary drive mechanism 500 includes a rotary drive unit 510, a drive shaft 520, and two drive gears 530.

[0042] The drive shaft 520 extends in the front-to-back direction and is rotatably connected to the base 100. Two drive gears 530 are coaxially and fixedly connected to the drive shaft 520. The output shaft of the rotary drive unit 510 is driveably connected to the drive shaft 520. Both the centering drum 200 and the centering clamp 300 are coaxially provided with driven gears 540. The two drive gears 530 respectively engage with the driven gears 540 of the centering drum 200 and the centering clamp 300.

[0043] When the rotary drive unit 510 drives the drive shaft 520 to rotate, the two drive gears 530 rotate synchronously, thereby driving the centering drum 200 and the centering clamp 300 to rotate synchronously through meshing transmission. The two driven gears 540 are coaxially and fixedly connected to the centering drum 200 and the centering clamp 300, respectively. Both driven gears 540 are annular in shape, with their central portions extending through the front and rear and aligned with the light-transmitting holes.

[0044] Referring to the accompanying drawings, the rear end of the centering clamp 300 is exposed outside the rotating cavity of the base 100, the driven gear 540 is coaxially disposed on the rear side of the centering clamp 300, and the first driving member 421 is disposed on the front side of the driven gear 540 and rotatably sleeved on the centering clamp 300.

[0045] The light source emitting module 600 includes a detection light source 610 and a light source lens 620. The detection light source 610 has an exit end facing the centering rotating cylinder 200. The light source lens 620 is a convex lens or a concave lens. The light source lens 620 is adjustable in the front-to-back direction at the exit end. The light source lens 620 enables the light from the detection light source 610 to be better imaged onto the lens to be processed.

[0046] The imaging receiving module 700 includes a CCD camera 710 and a display screen 720, with the CCD camera 710 electrically connected to the display screen 720. The CCD camera 710 is positioned forward-facing behind the centering clamp 300. The CCD camera 710 captures an image of the processed lens, and the image pattern is displayed in real-time on the display screen 720. The display screen 720 can be a color LCD screen with imaging scale, allowing for intuitive viewing of image shift and convenient adjustment.

[0047] Furthermore, to achieve clearer imaging, the CCD camera 710 is also equipped with a focusing lens 730 and a magnifying lens 740 on the side facing the centering rotor 200. The focusing lens 730 corrects the refraction of the imaging light as it passes through the lens to be processed, enabling the CCD camera 710 to capture a clear image of the pattern. The magnifying lens 740 magnifies the image pattern for easier observation.

[0048] In this embodiment, a control handle 120 is fixedly provided on the base 100. The lower end of the control handle 120 is fixedly connected to the base 100, and the other end has a control button 121, which is electrically connected to the rotation drive unit 510. In actual use, the rotation drive unit 510 can be manually started and stopped by the control button 121, thereby facilitating simultaneous observation of the imaging shift during lens rotation on the display screen 720.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art can make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention. All such changes, modifications, equivalent alterations or substitutions are included within the scope defined by the claims of this application, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A visual lens centering device, comprising: The device comprises a centering rotating cylinder, a centering clamping cylinder, a clamping drive mechanism, and a rotation drive mechanism. The centering rotating cylinder and the centering clamping cylinder are coaxially arranged. The clamping drive mechanism is used to drive the centering clamping cylinder to move axially, and the rotation drive mechanism is used to drive the centering rotating cylinder and the centering clamping cylinder to rotate. The device is characterized by further comprising a light source emitting module and an imaging receiving module. Both the centering rotating cylinder and the centering clamping cylinder have axially penetrating light-transmitting holes. The light source emitting module and the imaging receiving module have optical axes coaxially arranged with the centering rotating cylinder and the centering clamping cylinder. The centering rotating cylinder and the centering clamping cylinder are disposed between the light source emitting module and the imaging receiving module.

2. The visual lens centering device according to claim 1, characterized in that: Includes a base, the base having a processing space, and a centering rotary cylinder and a centering clamping cylinder respectively disposed on the front and rear sides of the processing space and connected to the base.

3. The visual lens centering device according to claim 2, characterized in that: The base has a cylindrical cavity extending through the front and back, and the centering clamp is movably disposed in the cavity so that the centering clamp can rotate and move back and forth relative to the base.

4. The visual lens centering device according to claim 3, characterized in that: The clamping drive mechanism includes a clamping drive unit and a clamping drive component. The clamping drive component is rotatably connected to the centering clamp. The clamping drive unit is used to drive the clamping drive component to move back and forth relative to the base.

5. The visual lens centering device according to claim 4, characterized in that: The clamping drive component includes a first drive member and a second drive member, which are elastically connected in the front-rear direction. The first drive member and the second drive member are respectively connected to the clamping drive unit and the centering clamp.

6. The visual lens centering device according to claim 2, characterized in that: The base is fixedly provided with a control handle, and the end of the control handle has a control button that is electrically connected to the rotary drive mechanism.

7. The visual lens centering device according to claim 1, characterized in that: The centering drum and the centering clamp are synchronously driven.

8. The visual lens centering device according to claim 7, characterized in that: The rotary drive mechanism includes two synchronously rotating drive gears. Both the centering drum and the centering clamp are coaxially equipped with driven gears, and the two drive gears are respectively engaged with the two driven gears.

9. The visual lens centering device according to claim 1, characterized in that: The imaging receiving module includes a CCD camera and a display screen, with the CCD camera connected to the display screen.

10. The visual lens centering device according to claim 9, characterized in that: The CCD camera is also equipped with a centering focusing lens and a magnifying lens on the side facing the centering rotating cylinder.

Images