Lens edge thickness detection mechanism

Abstract

The utility model relates to the technical field of optical lens detection, in particular to a lens edge thickness detection mechanism. The suction component comprises a rotating module; the rotating module is connected with a grabbing module used for fixing a lens. The rotating module is used for driving the grabbing module to rotate; the moving module is used for driving the rotating module to move between the material table and the camera module. When the device is used, the device can quickly and accurately detect whether the edge surface of the lens is not formed, broken, cracked, broken and broken, and the like, can accurately measure the edge thickness value of the lens, and records the value change of the edge thickness of the whole peripheral edge surface of the lens. The lenses with the edge thickness within a certain range or the lenses with the edge thickness change within a certain range can be screened out, and damage to human eyes is reduced.

Description

Technical Field

[0001] This utility model relates to the field of optical lens testing technology, and in particular to a lens edge thickness testing mechanism. Background Technology

[0002] After thermoforming or edging optical lenses, defects such as incomplete forming of the outer circumferential surface (i.e., edge surface), uneven edge thickness, and edge chipping often occur. Because these defects are small and the lenses are nearly transparent, current inspection methods require rotating the lens at a specific angle and observing it with a single eye using lighting and a magnifying glass. This method has many drawbacks: it is difficult to inspect, inefficient, and prolonged observation can cause significant eye damage. Furthermore, it cannot accurately determine the edge thickness of the lens. Therefore, there is an urgent need for an instrument to replace human eye inspection. Utility Model Content

[0003] The purpose of this invention is to provide a lens edge thickness detection mechanism to address the shortcomings and deficiencies of existing technologies.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] The present invention discloses a lens edge thickness detection mechanism, comprising a material platform, a camera module, and a moving module; the moving module is provided with a suction component; the suction component includes a rotating module; and the rotating module is connected to a gripping module for fixing the lens.

[0006] The rotating module is used to drive the gripping module to rotate; the moving module is used to drive the rotating module to move between the material platform and the camera module.

[0007] Furthermore, the rotating module is a hollow motor; the gripping module is fixed to the hollow motor shaft; the gripping module is a suction pen; and a high-pressure rotary joint is connected to the top of the hollow motor shaft.

[0008] Furthermore, a sensor is fixed on the outer shell of the hollow motor; a contact piece for use with the sensor is fixed on the hollow shaft of the motor.

[0009] Furthermore, a slider is fixed on the rotating module; a guide rail is slidably connected to the slider; a fixing plate is fixed on the guide rail; the fixing plate is fixed on the moving module; and a buffer cylinder is provided between the slider and the fixing plate.

[0010] Furthermore, the camera module includes a support body; a ring light and an industrial camera are fixed on the support body; the ring light and the industrial camera are coaxially arranged.

[0011] Furthermore, the support body includes a lower support, a locking bolt, and an upper support slidably connected to the lower support; the upper support has a strip groove; the lower support has a threaded hole; and the locking bolt passes through the strip groove and is threadedly connected to the threaded hole.

[0012] Furthermore, an anti-glare plate is provided at the opposite position of the ring-shaped supplementary light.

[0013] Furthermore, the moving module includes a longitudinal linear module, a transverse linear module connected to the longitudinal linear module, and a lifting linear module connected to the transverse linear module; the moving module is connected to the lifting linear module.

[0014] The beneficial effects of this invention after adopting the above structure are as follows: the moving module moves the lens on the grasping module to the front of the camera module; the rotating module drives the lens to rotate in front of the camera module, and the camera module acquires images of various positions on the side surface of the lens, compares them on the computer, and then determines whether the thickness change of the lens is within the set range, and whether the lens has chipped or broken edges; qualified products are placed in the qualified area, and unqualified products are placed in the unqualified area; in this structure, it is possible to quickly and accurately detect whether the lens has defects such as unformed edge surface, broken core, cracked edge, broken edge, chipped edge, etc., and it can also accurately measure the edge thickness value of the lens, and record the value change of the edge thickness of the entire circumference of the lens. It can screen out lenses with edge thickness within a certain range or lenses with edge thickness changes within a certain range, reducing damage to the human eye. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a structural diagram of the suction component;

[0017] Figure 3 This is a structural diagram of the camera module;

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Material table; 2. Camera module; 201. Ring fill light; 202. Industrial camera;

[0020] 203. Upper bracket; 20301. Strip groove; 204. Lower bracket; 205. Locking bolt;

[0021] 3. Suction component; 301. High-pressure rotary joint; 302. Sensor; 303. Hollow motor;

[0022] 30301, Hollow motor shaft; 304, Contact piece; 305, Pen pen; 306, Slider; 307, Guide rail;

[0023] 308. Buffer cylinder; 309. Fixed plate; 4. Lifting linear module; 5. Lateral linear module;

[0024] 6. Vertical linear module; 7. Matte plate. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 3 As shown, the lens edge thickness detection mechanism of this utility model includes a material platform 1, a camera module 2, and a moving module; the moving module is provided with a suction component 3; the suction component 3 includes a rotating module; the rotating module is connected to a gripping module for fixing the lens;

[0027] The rotating module is used to drive the gripping module to rotate; the moving module is used to drive the rotating module to move between the material platform 1 and the camera module 2;

[0028] The material platform 1 is equipped with an inspection area, a qualified area, and a defective area. A moving module drives a gripping module to move to the inspection area and grips a lens. The moving module moves the lens on the gripping module to the front of the camera module 2. A rotating module rotates the lens in front of the camera module 2, and the camera module 2 acquires images of various positions on the side surface of the lens. These images are compared on a computer to determine whether the thickness variation of the lens is within a set range and whether the lens has chipped or broken edges. Qualified products are placed in the qualified area, and defective products are placed in the defective area. This structure can quickly and accurately detect defects such as unformed edges, broken cores, cracked edges, broken edges, and chipped edges in lenses. It can also accurately measure the edge thickness of the lens and record the value of the edge thickness variation of the entire circumference of the lens. Lenses with edge thickness within a certain range or edge thickness variation within a certain range can be screened, reducing damage to the human eye.

[0029] In a preferred embodiment of this utility model, the rotating module is a hollow motor 303; the gripping module is fixed to the hollow motor shaft 30301 of the hollow motor 303; the gripping module is a suction pen 305; and a high-pressure rotary joint 301 is connected to the top of the hollow motor shaft 30301.

[0030] The hollow motor 303, high-pressure rotary joint 301, and suction pen 305 are not fundamentally different from existing technologies, so they will not be described in detail. The high-pressure rotary joint 301 is connected to the external air circuit. The hollow motor shaft 30301 is the motor output shaft, which is not fundamentally different from existing technologies, so it will not be described in detail. The high-pressure rotary joint 301 creates negative pressure in the hollow motor shaft 30301 and suction pen 305, which then lifts the lens.

[0031] One end of the hollow motor shaft 30301 is connected to the high-pressure rotary joint 301, and the other end of the hollow motor shaft 30301 is connected to the suction pen 305. The hollow motor 303 drives the hollow motor shaft 30301 to rotate, causing the suction pen 305 to rotate, thus realizing the circular motion of the lens.

[0032] In a preferred embodiment of this utility model, a sensor 302 is fixed on the outer shell of the hollow motor 303; a contact piece 304 for use in conjunction with the sensor 302 is fixed on the hollow rotating shaft 30301 of the motor.

[0033] Sensor 302 is used to sense the position of contact piece 304. When contact piece 304 reaches the position of sensor 302, it indicates that hollow motor 303 is reset.

[0034] In a preferred embodiment of this utility model, a slider 306 is fixed on the rotating module; a guide rail 307 is slidably connected to the slider 306; a fixing plate 309 is fixed on the guide rail 307; the fixing plate 309 is fixed on the moving module; and a buffer cylinder 308 is provided between the slider 306 and the fixing plate 309.

[0035] When the gripping module on the rotating module comes into contact with the lens, the impact force between the lens and the gripping module is reduced by the buffer cylinder 308, which can protect the lens and the gripping module.

[0036] In a preferred embodiment of the present invention, the camera module 2 includes a support body; a ring light 201 and an industrial camera 202 are fixed on the support body; the ring light 201 and the industrial camera 202 are coaxially arranged.

[0037] The industrial camera 202 is not fundamentally different from existing technology, so it will not be described in detail. The ring light 201 emits light in a ring shape, which can provide supplemental lighting for the lens. The industrial camera 202 acquires the image of the lens and then transmits it to the computer via a data cable.

[0038] In a preferred embodiment of this utility model, the support body includes a lower support 204, a locking bolt 205, and an upper support 203 slidably connected to the lower support 204; the upper support 203 has a strip groove 20301; the lower support 204 has a threaded hole; the locking bolt 205 passes through the strip groove 20301 and is threadedly connected to the threaded hole;

[0039] After loosening the locking bolt 205, the upper bracket 203 can slide on the lower bracket 204 to adjust the height of the industrial camera 202.

[0040] As a preferred embodiment of this utility model, a matting plate 7 is provided at the opposite position of the ring-shaped supplementary light 201; the matting plate 7 is a black background plate, and during inspection, the lens is placed between the matting plate 7 and the ring-shaped supplementary light 201, so as to reduce the influence of ambient stray light on the inspection through the matting plate 7.

[0041] In a preferred embodiment of this utility model, the moving module includes a longitudinal linear module 6, a transverse linear module 5 connected to the longitudinal linear module 6, and a lifting linear module 4 connected to the transverse linear module 5; the moving module is connected to the lifting linear module 4; the lifting linear module 4, the transverse linear module 5, and the longitudinal linear module 6 are all powered linear modules, which are not fundamentally different from the prior art, and therefore will not be described in detail; the longitudinal linear module 6 drives the transverse linear module 5 to perform transverse movement, the transverse linear module 5 drives the lifting linear module 4 to perform lifting movement, and the lifting linear module 4 drives the moving module to perform lifting movement.

[0042] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A lens edge thickness detection mechanism, characterized in that: It includes a material platform (1), a camera module (2), and a moving module; the moving module is provided with a suction component (3); the suction component (3) includes a rotating module; the rotating module is connected to a gripping module for fixing the lens; The rotating module is used to drive the gripping module to rotate; the moving module is used to drive the rotating module to move between the material platform (1) and the camera module (2).

2. The lens edge thickness detection mechanism according to claim 1, characterized in that: The rotating module is a hollow motor (303); the gripping module is fixed to the hollow motor shaft (30301) of the hollow motor (303); the gripping module is a suction pen (305); a high-pressure rotary joint (301) is connected to the top of the hollow motor shaft (30301).

3. The lens edge thickness detection mechanism according to claim 2, characterized in that: A sensor (302) is fixed on the outer shell of the hollow motor (303); a contact piece (304) for use in conjunction with the sensor (302) is fixed on the hollow shaft (30301) of the motor.

4. The lens edge thickness detection mechanism according to claim 1, characterized in that: A slider (306) is fixed on the rotating module; a guide rail (307) is slidably connected to the slider (306); a fixing plate (309) is fixed on the guide rail (307); the fixing plate (309) is fixed on the moving module; a buffer cylinder (308) is provided between the slider (306) and the fixing plate (309).

5. The lens edge thickness detection mechanism according to claim 1, characterized in that: The camera module (2) includes a support body; a ring light (201) and an industrial camera (202) are fixed on the support body; the ring light (201) and the industrial camera (202) are coaxially arranged.

6. The lens edge thickness detection mechanism according to claim 5, characterized in that: The support body includes a lower support (204), a locking bolt (205), and an upper support (203) slidably connected to the lower support (204); the upper support (203) has a strip groove (20301); the lower support (204) has a threaded hole; the locking bolt (205) passes through the strip groove (20301) and is threadedly connected to the threaded hole.

7. The lens edge thickness detection mechanism according to claim 5, characterized in that: A matting plate (7) is provided at the opposite position of the ring-shaped fill light (201).

8. The lens edge thickness detection mechanism according to claim 1, characterized in that: The moving module includes a longitudinal linear module (6), a transverse linear module (5) connected to the longitudinal linear module (6), and a lifting linear module (4) connected to the transverse linear module (5); the moving module is connected to the lifting linear module (4).

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