Thickness detection device for optical lens

Abstract

The utility model relates to a thickness detection device for an optical lens, which comprises a slide rail, a slide block slidably arranged on the slide rail, a detection head arranged on the left side of the slide block, a mounting plate arranged on the right side of the slide rail, a baffle arranged at the bottom of the mounting plate, a first guide rail arranged on the left side of the bottom of the baffle, a first guide frame slidably arranged in the first guide rail, and two slots arranged on the first guide frame. And a second guide frame is hinged between the tops of the swing rods, and a containing groove is formed in the top of the second guide frame. According to the utility model, the lifting path of the second guide frame driven by the push rod is doubly limited by the guide rail and the baffle, the lens is ensured to only move to the initial position of the detection head, the residual thickness is fed back and measured through the elastic piece, the traditional mechanical scale error is avoided, and the lens actively approaches the detection head, so that the risk of lens indentation or breakage caused by overshoot is reduced; the elastic piece (such as a spring) automatically resets the detection head to an initial point after measurement is completed, manual adjustment is not needed, rapid and continuous detection is achieved, and efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of optical lens testing technology, specifically relating to an optical lens thickness testing device. Background Technology

[0002] In the production and quality inspection of optical lenses, thickness is one of the most basic and critical indicators. Currently, the industry generally adopts a contact thickness detection solution: a stepper motor or manual mechanism drives the "detection head" to approach the lens surface until it contacts the lens surface, and then the thickness value is read according to the mechanical scale.

[0003] In actual testing, the displacement of the detection head is often controlled by a fixed step distance or manual experience. However, when the lens thickness is less than the preset value or the zero point of the equipment drifts, the detection head will continue to move forward, causing overshoot. This can result in indentations on the lens surface or even breakage. Therefore, a thickness detection device is designed to drive the optical lens to contact the detection head and reduce lens wear. Utility Model Content

[0004] The purpose of this invention is to provide a thickness detection device for optical lenses to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thickness detection device for an optical lens, comprising a slide rail, a slider slidably mounted on the slide rail, a detection head on the left side of the slider, a mounting plate on the right side of the slide rail, a baffle at the bottom of the mounting plate, a first guide rail on the left side of the bottom of the baffle, a first guide frame slidably mounted inside the first guide rail, the first guide frame having two slots, each slot having a swing arm rotatably mounted inside, a second guide frame hinged between the tops of the swing arms, and a placement slot at the top of the second guide frame.

[0006] Preferably, a second guide rail is symmetrically provided on the top of the first guide rail, and the second guide frame is slidably disposed between the second guide rails.

[0007] Preferably, a push rod is installed on the left side of the first guide rail, and the output end of the push rod is connected to the first guide frame.

[0008] Preferably, the mounting plate has a slide bar on the right side, a slide frame is slidably mounted on the slide bar, and the left side of the slide frame is connected to the slider.

[0009] Preferably, an elastic element is provided on the slide rod above the slide frame.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] In this invention, the lifting path of the second guide frame driven by the push rod is doubly limited by the guide rail and the baffle, ensuring that the lens only moves to the initial position of the detection head. The remaining thickness is measured by feedback from the elastic element, avoiding the error of traditional mechanical scale. At the same time, by having the lens actively approach the detection head, the risk of lens indentation or breakage due to overshoot is reduced. After the measurement is completed, the elastic element (such as a spring) of this invention automatically resets the detection head to the initial point without manual adjustment, realizing rapid and continuous detection and improving efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a partial exploded view of the present invention;

[0014] Figure 3 This is a schematic diagram of the first partial structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the second part of the structure of this utility model.

[0016] The numbers in the diagram are: 1-slide rail, 2-slider, 3-detection head, 4-mounting plate, 5-baffle, 6-first guide rail, 7-first guide frame, 8-slot, 9-swing rod, 10-second guide frame, 11-placement slot, 12-second guide rail, 13-push rod, 14-slide rod, 15-slide frame, 16-elastic element. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1

[0019] like Figures 1 to 4The optical lens thickness detection device shown includes a slide rail 1, a slider 2 slidably mounted on the slide rail 1, and a detection head 3 on the left side of the slider 2. The device is characterized by a mounting plate 4 on the right side of the slide rail 1, a baffle 5 at the bottom of the mounting plate 4, a first guide rail 6 on the left side of the bottom of the baffle 5, a first guide frame 7 slidably mounted within the first guide rail 6, the first guide frame 7 having two slots 8, each slot 8 containing a swing rod 9 rotatably mounted, a second guide frame 10 hinged between the tops of the swing rods 9, and a placement groove 11 at the top of the second guide frame 10; symmetrical second guide rails 12 on the top of the first guide rail 6, with the second guide frame 10 slidably positioned between the second guide rails 12; a push rod 13 mounted on the left side of the first guide rail 6, the output end of the push rod 13 connected to the first guide frame 7; a slide rod 14 on the right side of the mounting plate 4, a slide frame 15 slidably mounted on the slide rod 14, the left side of the slide frame 15 connected to the slider 2; and an elastic element 16 located above the slide frame 15 on the slide rod 14.

[0020] In this invention, the lifting path of the second guide frame 10 driven by the push rod 13 is doubly limited by the guide rail and the baffle 5, ensuring that the lens only moves to the initial position of the detection head 3. The remaining thickness is measured by feedback through the elastic element 16, avoiding the error of traditional mechanical scale. At the same time, by having the lens actively approach the detection head 3, the risk of lens indentation or breakage caused by overshoot is reduced. After the measurement is completed, the elastic element 16 (such as a spring) automatically resets the detection head 3 to the initial point without manual adjustment, realizing rapid and continuous detection and improving efficiency.

[0021] Example 2

[0022] like Figures 1 to 4 The optical lens thickness detection device shown includes a slide rail 1, a slider 2 slidably mounted on the slide rail 1, and a detection head 3 on the left side of the slider 2. The detection head 3 can move up and down by moving the slider 2 up and down on the slide rail 1. When a lens to be tested is placed below the detection head 3, the detection head 3 can be adjusted to contact the surface of the lens to achieve physical measurement of the lens.

[0023] In this embodiment, a first guide rail 6 is also provided, with a baffle 5 on the right side of the first guide rail 6. A first guide frame 7 is slidably provided inside the first guide rail 6, meaning the first guide frame 7 can move left and right within the first guide rail 6. The first guide frame 7 has two slots 8 on the left and right sides, and a rocker arm 9 is rotatably provided in each slot 8. A second guide frame 10 is hinged between the tops of the rocker arms 9. Correspondingly, a second guide rail 12 is symmetrically provided on the top of the first guide rail 6, so that the second guide frame 10 is slidably provided between the second guide rails 12. That is, in the initial state, the second guide frame 10 will be located between the second guide rails 12, and its right edge will extend beyond the first guide frame 7. When a push rod 13 is installed on the left side of the first guide rail 6 and the output end of the push rod 13 is connected to the first guide frame 7, the first guide frame 7 and above can be driven by driving the push rod 13. The second guide frame 10 moves to the right until it moves out of the second guide rail 12 and abuts against the baffle 5. Then, the push rod 13 continues to push the first guide frame 7 and the second guide frame 10 above it to the right. The second guide frame 10 abuts against the baffle 5 and cannot move. At this time, the first guide frame 7 continues to move, and the swing rod 9 can drive the second guide frame 10 to move upward until the first guide frame 7 also moves to abut against the baffle 5 and is located below the second guide frame 10. Conversely, the drive push rod 13 drives the first guide frame 7 and the second guide frame 10 above it to move to the left. This will drive the first guide frame 7 to move to the left first, and drive the second guide frame 10 to gradually move downward until it is parallel to the second guide rail 12. The first guide frame 7 continues to move to the left, and the swing rod 9 can drive the second guide frame 10 to return to the second guide rail 12.

[0024] It should be noted that during the lens inspection process, if the inspection head 3 is only driven to approach the lens, the stroke may become uncontrollable and the lens may be damaged. Therefore, this application specifically sets the placement slot 11 for placing the lens to be adjustable, that is, the action of the aforementioned drive push rod 13 can drive the lens to gradually move upward to the inspection plane, that is, to the position below the inspection head 3, and complete the thickness inspection of the lens by squeezing the inspection head 3 to move upward.

[0025] Then, the slide rail 1 is installed above the baffle 5 via the mounting plate 4. After the drive push rod 13 is activated, the lens can be moved to the underside of the detection head 3. Then, a slide rod 14 is provided on the right side of the mounting plate 4. A slide frame 15 is slidably mounted on the slide rod 14. The left side of the slide frame 15 is connected to the slider 2. An elastic element 16 is provided on the slide rod 14 above the slide frame 15. That is, the highest point of the placement groove 11 is the initial detection point of the detection head 3. The remaining thickness of the lens will squeeze the detection head 3 to move upward, realizing the physical measurement of the lens. At the same time, the upward movement of the detection head 3 drives the slide frame 15 to move upward through the slider 2, and the elastic element 16 is compressed. After the measurement is completed, the lens is automatically reset and retracted, no longer squeezing the detection head 3. The elastic element 16 resets and drives the detection head 3 back to the initial detection point for the next measurement.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A thickness detection device for an optical lens, comprising a slide rail, a slider slidably mounted on the slide rail, and a detection head disposed on the left side of the slider, characterized in that, The slide rail is provided with a mounting plate on the right side, and a baffle is provided at the bottom of the mounting plate. A first guide rail is provided on the left side of the bottom of the baffle. A first guide frame is slidably provided in the first guide rail. The first guide frame is provided with two slots. A swing rod is rotatably provided in each slot. A second guide frame is hinged between the tops of the swing rods. The top of the second guide frame is provided with a placement slot.

2. The thickness detection device for an optical lens according to claim 1, characterized in that, A second guide rail is symmetrically provided on the top of the first guide rail, and the second guide frame is slidably disposed between the second guide rails.

3. The optical lens thickness detection device according to claim 1, characterized in that, A push rod is installed on the left side of the first guide rail, and the output end of the push rod is connected to the first guide frame.

4. The thickness detection device for an optical lens according to claim 1, characterized in that, The mounting plate has a slide bar on the right side, and a slide frame is slidably mounted on the slide bar. The left side of the slide frame is connected to the slider.

5. The thickness detection device for an optical lens according to claim 4, characterized in that, An elastic element is provided on the slide rod above the slide frame.

Images