Contact lens color mold color difference detection device

Abstract

The utility model relates to the technical field of contact lens automatic production, in particular to a contact lens color mold color difference detection device which comprises a detection carrying mechanism, a detection displacement module for driving the detection carrying mechanism to perform reciprocating displacement and an optical detection mechanism, during detection work, the detection carrying mechanism adjusts the static posture of a to-be-detected color mold, the detection displacement module drives the detection carrying mechanism to the position above the backlight structure, the detection lifting module drives the front light structure to change the illumination height of front light, and the visual camera detects the to-be-detected color mold in different illumination environments. The device is high in automation degree, and integrates posture adjustment and visual detection of the color mold to be detected; by adjusting supplied materials, the positions and postures required by specified detection are achieved, and subsequent operation can be completed only by carrying a color mold to the detection carrying mechanism; a backlight structure and a height-controllable positive light structure are integrated, simulation of various light conditions is achieved, and more comprehensive color difference detection of the contact lens color mold is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automated production of contact lenses, in particular to a device for detecting color differences in color molds of contact lenses. Background Art

[0002] Colored contact lenses (cosmetic lenses) have patterns of various colors on their irises. In the manufacturing process, there are usually a variety of methods for printing patterns on colored glasses, among which color mold (concave mold or convex mold) pad printing is a commonly used method; the color mold is usually a light-transmitting optical mold. In the existing pad printing equipment and related mechanisms, the color mold after pad printing will not be visually inspected for color difference or other adverse parameters, which puts greater pressure on the production capacity and quality of the subsequent equipment and production processes;

[0003] Even if some equipment can detect color difference of color molds, conventional visual inspection methods and equipment have the following disadvantages: 1. Its detection action can only perform simple identification or detection, and is still in its infancy; 2. It is impossible to perform detection under multiple light source conditions at one time, and cannot perform detailed detection of defect color difference and pattern quality. Utility Model Content

[0004] The utility model aims to provide an automated contact lens color mold color difference detection device which provides a variety of lighting conditions and can perform defect and color difference detection.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] A contact lens color mold color difference detection device, comprising a detection and transport mechanism, a detection displacement module driving the detection and transport mechanism to move back and forth, and an optical detection mechanism;

[0007] The optical detection mechanism includes a backlight structure, a positive light structure, a detection lifting module for driving the positive light structure to rise and fall, and a visual camera; during detection, the detection transport mechanism adjusts the static posture of the color model to be tested, the detection displacement module drives the detection transport mechanism to the top of the backlight structure, the detection lifting module drives the positive light structure to change the positive light illumination height, and the visual camera detects the color model to be tested under different lighting environments.

[0008] Furthermore, it also includes a detection frame and a detection stand arranged on the detection frame; the detection displacement module and the backlight structure are arranged on the detection frame; the detection lifting module is arranged on the detection stand to drive the positive light structure to rise and fall above the backlight structure;

[0009] Furthermore, the detection and transport mechanism includes a rotating mechanism and a pitch-changing mechanism, the rotating mechanism is connected to the detection displacement module by a detection displacement frame, and the pitch-changing mechanism is installed at the output end of the rotating mechanism;

[0010] Furthermore, one end of the detection displacement frame is connected to the output end of the detection displacement module, and the other end is slidably mounted on the displacement auxiliary rail;

[0011] Furthermore, the pitch-changing mechanism comprises a pitch-changing frame installed at the output end of the rotating mechanism, a pitch-changing cylinder installed in the pitch-changing frame, and a detection carrier plate slidably installed on the pitch-changing frame; the pitch-changing cylinder drives the detection carrier plate to slide on the pitch-changing frame to change the pitch;

[0012] Furthermore, the pitch-changing cylinder is provided with a set of pitch-changing slides that move relative to each other, and each of the pitch-changing slides is connected to the detection carrier plate by a pitch-changing connecting frame;

[0013] Furthermore, the detection carrier plate is provided with a pitch-changing guide wheel, and the pitch-changing connecting frame is provided with a pitch-changing guide groove; when the pitch is changed, the pitch-changing guide wheel slides in the pitch-changing guide groove;

[0014] Furthermore, the displacement detection module and the lifting detection module are both linear modules;

[0015] Furthermore, the visual camera is a visual image detector;

[0016] Furthermore, the rotating mechanism is a rotating motor or a rotating cylinder, and the variable pitch cylinder is a double-headed cylinder;

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] In actual use, the utility model detects and transports the color model to be tested that is transferred from the front-end equipment. After the color model to be tested enters the detection and transport mechanism, the product is transported and adjusted to reach a predetermined posture. Then, the detection displacement module displaces the detection and transport mechanism and the color model to be tested to the optical detection mechanism. The backlight structure provides backlight fill light from below the color model. The displacement lifting module drives the positive light structure to change the predetermined height. During this period, the visual camera obtains image data of the color model to be tested under different lighting conditions to complete the color difference detection operation. During the detection process, the displacement lifting module drives the detection and transport mechanism to displace, and implements side-by-side single-piece detection of dual cameras. Each camera detects one piece at a time, and one detection cycle completes the color model detection of a fixture.

[0019] This contact lens product testing device has a high degree of automation and integrates the posture adjustment and visual inspection of the color model to be tested. By adjusting the incoming materials to achieve the position and posture required for the specified inspection, the subsequent operations can be completed by simply transporting the color model to the inspection and transportation mechanism. The integrated backlight structure and the highly controllable positive light structure can detect color model defects, color difference space, and pattern color difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a side view of the overall structure of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the detection and carrying mechanism of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the pitch-changing mechanism of the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] refer to Figure 1-4 As shown, a color difference detection device for a color model of a contact lens comprises a detection and transport mechanism 261, a detection displacement module 262 for driving the detection and transport mechanism 261 to move back and forth, and an optical detection mechanism 263; the optical detection mechanism 263 comprises a backlight structure 2631, a positive light structure 2632, a detection lifting module 2634 for driving the positive light structure 2632 to rise and fall, and a visual camera 2633; during the detection operation, the detection and transport mechanism 261 adjusts the static posture of the color model to be tested, the detection displacement module 262 drives the detection and transport mechanism 261 to the top of the backlight structure 2631, the detection lifting module 2634 drives the positive light structure 2632 to change the positive light illumination height, and the visual camera 2633 detects the color model to be tested under different illumination environments.

[0026] The backlight structure 2631 is a light board structure to achieve back-lighting, and the front light structure 2632 is an environmentally friendly lampshade structure, which can be installed with various types of light beads as needed to simulate different lighting conditions.

[0027] In actual use of the utility model, the detection and transport mechanism 261 carries the color model to be tested transferred by the front-end equipment. After the color model to be tested enters the detection and transport mechanism 261, the product is transported and adjusted to reach a predetermined posture; then the detection displacement module 262 displaces the detection and transport mechanism 261 and the color model to be tested to the optical detection mechanism 263, and the backlight structure 2631 provides backlight fill light from below the color model, and the displacement lifting module 2634 drives the positive light structure 2632 to change the predetermined height. During this period, the visual camera obtains the image data of the color model to be tested under different lighting conditions to complete the color difference detection operation; during the detection process, the displacement lifting module drives the detection and transport mechanism to displace, and implements side-by-side single-piece detection of dual cameras, with each camera detecting one piece at a time, and one detection cycle completes the color model detection of a fixture.

[0028] This contact lens product testing device has a high degree of automation and integrates the posture adjustment and visual inspection of the color model to be tested. By adjusting the incoming materials to achieve the position and posture required for the specified inspection, the subsequent operations can be completed by simply transporting the color model to the inspection and transportation mechanism. The integrated backlight structure and the highly controllable positive light structure can detect color model defects, color difference space, and pattern color difference.

[0029] In this embodiment, it also includes a detection frame 264 and a detection platform 265 arranged on the detection frame 264; the detection displacement module 262 and the backlight structure 2631 are arranged on the detection frame 264; the detection lifting module 2634 is arranged on the detection platform 265 to drive the positive light structure 2632 to rise and fall above the backlight structure 2631.

[0030] In this embodiment, the detection and transport mechanism 261 includes a rotating mechanism 2611 and a pitch-changing mechanism 2612. The rotating mechanism 2611 is connected to the detection displacement module 262 by a detection displacement frame 2622. The pitch-changing mechanism 2612 is installed at the output end of the rotating mechanism 2611; one end of the detection displacement frame 2622 is connected to the output end of the detection displacement module 262, and the other end is slidably installed on the displacement auxiliary rail 2621; the detection and transport mechanism 261 is composed of a rotating mechanism 2611 and a pitch-changing mechanism 2612; one end of the detection displacement frame 2622 is connected to the output end of the detection displacement module 262, and the other end is slidably installed on the displacement auxiliary rail 2621 and driven by the detection displacement module 262, so as to drive the reciprocating movement of the rotating mechanism 2611.

[0031] In this embodiment, the pitch changing mechanism 2612 includes a pitch changing frame 2617 installed at the output end of the rotating mechanism 2611, a pitch changing cylinder 2613 installed in the pitch changing frame 2617, and a detection carrier 2616 slidably installed on the pitch changing frame 2617; the pitch changing cylinder 2613 drives the detection carrier 2616 to slide and change the pitch on the pitch changing frame 2617; the pitch changing cylinder 2613 is provided with a group of pitch changing slides 2614 that move relative to each other, and each of the pitch changing slides 2614 and the detection carrier 2616 The variable pitch connecting frame 2615 is used for connection; the variable pitch cylinder 2613 is a double-headed cylinder, and the double heads are respectively equipped with a variable pitch slide 2614, and the variable pitch slide 2614 is connected to the detection carrier 2616 through the variable pitch connecting frame 2615. The detection carrier 2616 is used to carry the color mold to be tested. The variable pitch cylinder 2613 drives the variable pitch slide 2614 and then pulls the detection carrier 2616 to adjust the position of the detection carrier 2616, ensuring that the spacing of the detection carrier 2616 is consistent with the spacing of the optical detection mechanism 263.

[0032] In this embodiment, the detection carrier 2616 is provided with a pitch-changing guide wheel 2618, and the pitch-changing connecting frame 2615 is provided with a pitch-changing guide groove 2619; when changing the pitch, the pitch-changing guide wheel 2618 slides in the pitch-changing guide groove 2619; the pitch-changing connecting frame 2618 is an inclined connecting rod, and an inclined pitch-changing guide groove 2619 is opened on the connecting rod, and the pitch-changing guide wheel 2618 of the detection carrier 2616 is arranged in the pitch-changing guide groove 2619. During the traction process, the longitudinal movement of the pitch-changing slide 2614 is changed into a lateral translation of the detection carrier 2616 by the pitch-changing guide groove 2619 and the pitch-changing guide wheel 2618; thereby realizing the opening and closing pitch change of both sides of the detection carrier 2616; to cope with products with different needs, it is only necessary to replace the detection carrier 2616 to achieve the adaptation and coverage of various product size types.

[0033] In this embodiment, the detection displacement module 262 and the detection lifting module 2634 are both linear modules; the visual camera 2633 is a visual image detector; the rotating mechanism 2611 is a rotating motor or a rotating cylinder, and the variable pitch cylinder 2613 is a double-headed cylinder.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A contact lens color mold color difference detection device, characterized in that: It comprises a detection transport mechanism (261), a detection displacement module (262) for driving the detection transport mechanism (261) to move back and forth, and an optical detection mechanism (263); The optical detection mechanism (263) comprises a backlight structure (2631), a positive light structure (2632), a detection lifting module (2634) for driving the positive light structure (2632) to lift and lower, and a visual camera (2633); during detection, the detection transport mechanism (261) adjusts the static posture of the color model to be tested, the detection displacement module (262) drives the detection transport mechanism (261) to the top of the backlight structure (2631), the detection lifting module (2634) drives the positive light structure (2632) to change the positive light illumination height, and the visual camera (2633) detects the color model to be tested under different illumination environments.

2. A contact lens color mold color difference detection device according to claim 1, characterized in that: It also includes a detection frame (264) and a detection platform (265) arranged on the detection frame (264); the detection displacement module (262) and the backlight structure (2631) are arranged on the detection frame (264); and the detection lifting module (2634) is arranged on the detection platform (265) to drive the positive light structure (2632) to rise and fall above the backlight structure (2631).

3. A contact lens color mold color difference detection device according to claim 1, characterized in that: The detection and transport mechanism (261) comprises a rotating mechanism (2611) and a pitch-changing mechanism (2612); the rotating mechanism (2611) is connected to the detection displacement module (262) by using a detection displacement frame (2622); and the pitch-changing mechanism (2612) is installed at the output end of the rotating mechanism (2611).

4. A contact lens color mold color difference detection device according to claim 3, characterized in that: One end of the detection displacement frame (2622) is connected to the output end of the detection displacement module (262), and the other end is slidably mounted on the displacement auxiliary rail (2621).

5. A contact lens color mold color difference detection device according to claim 3, characterized in that: The pitch changing mechanism (2612) comprises a pitch changing frame (2617) installed at the output end of the rotating mechanism (2611), a pitch changing cylinder (2613) installed in the pitch changing frame (2617), and a detection carrier plate (2616) slidably installed on the pitch changing frame (2617); the pitch changing cylinder (2613) drives the detection carrier plate (2616) to slide on the pitch changing frame (2617) to change the pitch.

6. A contact lens color mold color difference detection device according to claim 5, characterized in that: The pitch-changing cylinder (2613) is provided with a group of pitch-changing slides (2614) that move relative to each other, and each of the pitch-changing slides (2614) is connected to the detection carrier plate (2616) by a pitch-changing connecting frame (2615).

7. A contact lens color mold color difference detection device according to claim 6, characterized in that: The detection carrier plate (2616) is provided with a pitch-changing guide wheel (2618), and the pitch-changing connecting frame (2615) is provided with a pitch-changing guide groove (2619); when the pitch is changed, the pitch-changing guide wheel (2618) slides in the pitch-changing guide groove (2619).

8. A contact lens color mold color difference detection device according to claim 1, characterized in that: The detection displacement module (262) and the detection lifting module (2634) are both linear modules.

9. A contact lens color mold color difference detection device according to claim 1, characterized in that: The visual camera (2633) is a visual image detector.

10. The device for detecting color difference of color molds of contact lenses according to claim 5, characterized in that: The rotating mechanism (2611) is a rotating motor or a rotating cylinder, and the variable pitch cylinder (2613) is a double-headed cylinder.

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