Optical lens eccentricity automatic detection device

Abstract

The utility model relates to the technical field of optical lens detection equipment, in particular to an optical lens eccentricity automatic detection device which comprises a rack, a detection platform and an eccentric meter are arranged on the rack, the eccentric meter is located over the detection platform, and the detection platform comprises a centering clamp driven by an electric rotary table to rotate. A feeding device, a mechanical arm and a conveying device are arranged beside the rack; the feeding device comprises a vertical cylindrical stock bin, a spacer is arranged in the stock bin to separate the upper and lower adjacent lenses, a blanking table is arranged below the cylindrical stock bin, a gap is formed between the blanking table and the stock bin, a blower device is arranged beside the blanking table, and an air outlet of the blower device faces the gap between the blanking table and the stock bin; the optical lenses in the stock bin are separated one by one, automatic blanking is achieved by means of gravity, and the optical lenses fall down one by one; when the centering clamp is used for clamping, the optical lens is not easy to damage due to overlarge force; optical lenses with different sizes can be clamped; and finally, qualified and unqualified optical lenses are conveyed in a split way.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lens detection equipment, in particular to an automatic detection device for optical lens eccentricity. Background Art

[0002] In the production process of optical lenses, the degree of lens eccentricity has an important influence on the optical performance of the lens. However, if the traditional manual lens eccentricity detection method is used, the efficiency is low and it is easy to cause inaccurate detection results due to human factors. Therefore, using automation technology to develop a device that can automatically detect the degree of eccentricity of optical lenses is of great significance to improving the production efficiency and quality of lenses. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide an automatic detection device for optical lens eccentricity, which can automatically, quickly and on a large scale detect the optical lens.

[0004] To achieve the above purpose, the solution adopted by the utility model is:

[0005] An automatic detection device for eccentricity of an optical lens comprises a frame, a detection platform and an eccentricity meter are arranged on the frame, the eccentricity meter is located directly above the detection platform, the detection platform comprises a centering fixture driven to rotate by an electric turntable, and a feeding device, a mechanical arm and a transmission device are arranged on the side of the frame;

[0006] The feeding device includes a vertically placed cylindrical silo, in which a partition is arranged to separate upper and lower adjacent lenses, a drop table is arranged under the cylindrical silo, a gap is arranged between the drop table and the silo, and an air blowing device is arranged on the side, and the air outlet of the air blowing device is flat and faces the gap between the drop table and the silo.

[0007] Furthermore, the centering fixture includes a shell connected to the electric turntable, an adjustment disk driven to rotate by a pneumatic motor is arranged inside the shell, a threaded convex strip is arranged on the upper surface of the adjustment disk, a movable clamping block is connected above, a threaded groove cooperating with the threaded convex strip is arranged on the bottom surface of the movable clamping block, a linear groove for horizontal movement of the movable clamping block is arranged on the upper part of the shell, and an adaptive clamping jaw is arranged on the movable clamping block.

[0008] Furthermore, the adaptive clamp is hinged to the upper part of the movable block, and is provided with an opening facing the rotation center axis of the centering fixture, the inner angle of the opening is ≤50°, and a compression spring is provided between the bottom of the adaptive clamp and the movable block.

[0009] Furthermore, the number of the movable clamping blocks is 3 to 6 and they are evenly arranged around the rotation center axis of the centering fixture.

[0010] Furthermore, a protective pad is arranged in the opening, and the compression spring is arranged obliquely.

[0011] Furthermore, the eccentric meter and the frame are connected via a vertical slide rail.

[0012] Furthermore, the air outlet of the air blowing device is provided with an arc-shaped notch.

[0013] Furthermore, the upper portion of the silo is open.

[0014] Furthermore, the transmission device is composed of two parallel but non-synchronous transmission belts.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides an automatic detection device for optical lens eccentricity, which has the advantages of scientific structure and reasonable layout. The optical lenses in the silo are separated one by one, and automatic material dropping is realized by utilizing gravity. The optical lenses fall one by one and are taken away by a mechanical arm for detection. The pneumatic motor has an overload protection characteristic, and the edge of the optical lens is not easily damaged due to excessive force. The centering fixture can clamp optical lenses of various sizes and specifications without replacing different fixing fixtures. Finally, qualified and unqualified optical lenses are transported in separate routes according to the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0019] Figure 3 for Figure 1 Schematic diagram of the cross section along the BB direction;

[0020] Figure 4 for Figure 3 The enlarged schematic diagram at C in the middle;

[0021] Figure 5 It is a schematic diagram of the top view structure of the utility model;

[0022] Figure 6 It is a connection diagram of the adjustment disk and the movable clamping block in the utility model;

[0023] Figure 7 It is a structural schematic diagram of the air blowing device in the utility model.

[0024] In the figure: 1. frame; 2. platform; 2a. electric turntable; 2b. centering fixture; 2b-1. housing; 2b-2. adjusting disk; 2b-3. movable block; 2b-4. adaptive clamp; 3. eccentricity meter; 4. feeding device; 4a. silo; 4b. spacer; 4c. blanking table; 4d. blowing device; 5. mechanical arm; 6. transmission device. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] like Figure 1 to Figure 6 As shown, an automatic detection device for eccentricity of an optical lens comprises a frame 1, on which a detection platform 2 and an eccentricity meter 3 are arranged, the eccentricity meter 3 is located directly above the detection platform 2, and the eccentricity meter 3 and the frame 1 are connected by a vertical slide rail, so that the height thereof can be adjusted as required;

[0027] The detection platform 2 includes a centering fixture 2b driven to rotate by an electric turntable 2a. A feeding device 4, a robotic arm 5 and a transmission device 6 are arranged on the side of the frame 1. A pneumatic clamp is arranged at the execution end of the robotic arm 5. It takes one material (optical lens) from the feeding device 4 at a time, sends it to the centering fixture 2b and clamps it firmly, then starts the eccentricity meter 3 for detection, and finally transmits it to the transmission device 6 according to the detection result.

[0028] Specifically, the feeding device 4 includes a vertical cylindrical silo 4a, the upper part of the silo 4a is open, which is convenient for placing the optical lens, and a spacer 4b is provided in the silo 4a to separate the upper and lower adjacent lenses, and the spacer 4b plays a role in protecting the surface of the optical lens, and a drop table 4c is provided under the cylindrical silo 4a, and a gap is provided between the drop table 4c and the silo 4a, and a blast device 4d is provided on the side. For details, refer to Figure 7 The air outlet of the blowing device 4d is flat and has an arc-shaped notch, which faces the gap between the blanking platform 4c and the silo 4a. The blowing device 4d is used to blow away the partition 4b that falls into the gap. The above scheme realizes automatic blanking by gravity, and the optical lenses fall one by one and are taken away by the robot arm 5 for detection.

[0029] In order to ensure the accuracy of the detection, a centering fixture 2b is used to clamp the optical lens. The centering fixture 2b includes a shell 2b-1 connected to the electric turntable 2a. During the detection process, the centering fixture 2b needs to rotate with the optical lens. An adjusting disk 2b-2 driven to rotate by a pneumatic motor is arranged in the shell 2b-1. The upper surface of the adjusting disk 2b-2 is provided with a threaded convex strip, and an active block 2b-3 is connected to the top. The number of active blocks 2b-3 is 3 to 6 and they are evenly arranged around the rotation center axis of the centering fixture 2b. The bottom surface of the active block 2b-3 is provided with a threaded convex strip. The thread grooves matched with the ribbed strips, the upper part of the housing 2b-1 is provided with a linear groove for the horizontal movement of the movable block 2b-3, the pneumatic motor is a device that converts the pressure energy of compressed air into rotational mechanical energy, and it drives the adjustment disk 2b-2 to rotate, and the thread grooves and the threaded ribs can be matched to make the movable block 2b-3 move linearly away from or close to the rotation center axis of the centering fixture 2b, because the pneumatic motor has an overload protection function, so when it drives the movable block 2b-3 to clamp the optical lens, it is not easy to damage the edge of the optical lens due to excessive force. The distances between all the movable blocks 2b-3 and the rotation center axis of the centering fixture 2b are synchronously adjustable, so that the centering fixture 2b can clamp a variety of optical lenses of different sizes and specifications without replacing different fixed fixtures.

[0030] In order to achieve a further clamping function, an adaptive clamp 2b-4 is provided on the movable clamp block 2b-3. The adaptive clamp 2b-4 is hinged to the upper part of the movable clamp block 2b-3, and is provided with an opening facing the rotation center axis of the centering fixture 2b. A flexible protective pad is provided in the opening to prevent contact and damage to the surface of the optical lens. The inner angle of the opening is ≤50°. An inclined compression spring is provided between the bottom of the adaptive clamp 2b-4 and the movable clamp block 2b-3. When clamping the optical lens, the edge of the optical lens is stuck in the inner angle of the opening. The hinged connection design and spring support enable the adaptive clamp 2b-4 to be tilted up and down at a certain angle for better clamping.

[0031] The transmission device 6 for implementing the last process is composed of two parallel but non-synchronous transmission belts. According to the detection result of the eccentricity meter 3, one belt conveys the optical lenses that have passed the detection, and the other belt conveys the optical lenses that have failed the detection.

[0032] The above description is only a preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present utility model, changes, modifications or additions should all fall within the protection scope of the present utility model.

Claims

1. An automatic detection device for optical lens eccentricity, characterized in that: The machine frame (1) comprises a detection platform (2) and an eccentricity meter (3) arranged on the frame (1); the eccentricity meter (3) is located directly above the detection platform (2); the detection platform (2) comprises a centering fixture (2b) driven to rotate by an electric turntable (2a); and a feeding device (4), a mechanical arm (5) and a transmission device (6) are arranged on the side of the frame (1); The feeding device (4) comprises a vertically placed cylindrical material bin (4a), a spacer (4b) is arranged inside the material bin (4a) to separate upper and lower adjacent lenses, a material drop table (4c) is arranged under the cylindrical material bin (4a), a gap is arranged between the material drop table (4c) and the material bin (4a), and an air blowing device (4d) is arranged on the side, and the air outlet of the air blowing device (4d) is flat and faces the gap between the material drop table (4c) and the material bin (4a).

2. The automatic detection device for optical lens eccentricity according to claim 1, characterized in that: The centering fixture (2b) comprises a shell (2b-1) connected to the electric turntable (2a); an adjustment disk (2b-2) driven to rotate by a pneumatic motor is arranged in the shell (2b-1); a threaded protrusion is arranged on the upper surface of the adjustment disk (2b-2); a movable clamping block (2b-3) is connected above; a threaded groove matching the threaded protrusion is arranged on the bottom surface of the movable clamping block (2b-3); a linear groove for horizontal movement of the movable clamping block (2b-3) is arranged on the upper part of the shell (2b-1); and an adaptive clamping claw (2b-4) is arranged on the movable clamping block (2b-3).

3. The automatic detection device for optical lens eccentricity according to claim 2, characterized in that: The adaptive clamping jaw (2b-4) is hingedly connected to the upper part of the movable clamping block (2b-3), and is provided with an opening facing the rotation center axis of the centering clamp (2b), the inner angle of the opening being ≤50°, and a compression spring is provided between the bottom of the adaptive clamping jaw (2b-4) and the movable clamping block (2b-3).

4. The automatic detection device for optical lens eccentricity according to claim 3, characterized in that: The number of the movable clamping blocks (2b-3) is 3 to 6 and they are evenly arranged around the rotation center axis of the centering clamp (2b).

5. The automatic detection device for optical lens eccentricity according to claim 3, characterized in that: A protective pad is arranged in the opening, and the compression spring is arranged obliquely.

6. The automatic detection device for optical lens eccentricity according to claim 1, characterized in that: The eccentric meter (3) and the frame (1) are connected via a vertical slide rail.

7. The automatic detection device for optical lens eccentricity according to claim 1, characterized in that: The air outlet of the air blowing device (4d) is provided with an arc-shaped notch.

8. The automatic detection device for optical lens eccentricity according to claim 1, characterized in that: The upper part of the silo (4a) is open.

9. The automatic detection device for optical lens eccentricity according to claim 1, characterized in that: The transmission device (6) consists of two parallel but non-synchronous transmission belts.

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