Lensometer capable of stably clamping special-shaped lens

Abstract

The invention provides a lensometer capable of stably clamping a special-shaped lens, and belongs to the technical field of lensometers, the lensometer comprises a machine body, a lens clamping mechanism is arranged on the machine body, the lens clamping mechanism comprises a bearing table, and a main bearing mechanism, a limiting mechanism and an auxiliary bearing mechanism which are arranged on the bearing table, the detected lens is clamped by the main bearing mechanism and the limiting mechanism, and the non-detected lens is supported by the auxiliary bearing mechanism, so that the detected lens and the non-detected lens are fixed at the same time, an operator does not need to hold the glasses with hands during detection, and the labor intensity is effectively reduced. Through self-adaptive adjustment of a lower pressing rod of the self-adjusting limiting assembly, the irregular upper surface of the lens is adapted, and excessive local stress is avoided; manual adjustment is not needed, operation is simplified, an auxiliary bearing mechanism is matched, a non-detected lens does not need to be held by hands, and efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of focimeters, and in particular relates to a focimeter capable of stably clamping special-shaped lenses. Background Art

[0002] Existing lens-fixing mechanisms in focal meters are mostly based on standard circular lens designs, employing fixed-size rigid jaws or suction devices for clamping. These mechanisms, with their fixed clamping points, are only effective for lenses with regular edges. For lenses with irregular shapes (e.g., polygonal, chamfered, or irregularly curved edges), the edge contours do not align with the fixed clamping points, leading to force imbalance during clamping. This can cause lens displacement and increased measurement error, while in severe cases, localized overextrusion can lead to edge damage or surface scratches. These mechanisms struggle to meet the stable fixation requirements for lenses with irregular shapes.

[0003] During the testing process, both lenses of a pair of glasses need to be inspected separately. When one of the lenses being tested is fixed, the other lens is often suspended in the air. Existing focal meters lack a support structure for the non-tested lens. The lens drooping due to gravity may cause the frame to deform or collide with equipment components and be damaged. To avoid these problems, operators must continuously support the non-tested lens with their hands. This not only increases labor intensity but can also interfere with the stability of the lens being tested due to hand shaking, further reducing test accuracy. This also limits the operating space for both hands and leads to low test efficiency.

[0004] With the diversification of eyeglass designs, the application of special-shaped lenses is becoming more and more extensive. The limitations of existing focal meters in clamping adaptability, support for non-inspected lenses and ease of operation are becoming increasingly prominent. There is an urgent need for a focal meter structure that can stably clamp special-shaped lenses and simultaneously solve the problem of supporting non-inspected lenses to meet actual testing needs. Summary of the Invention

[0005] The present invention provides a lensometer capable of stably holding irregularly shaped lenses. The lensometer can stably hold irregularly shaped lenses. The self-adjusting limiter assembly's downward pressure rod adaptively adjusts to the lens's irregular upper surface, preventing excessive localized force. Manual adjustment is unnecessary, simplifying operation. Combined with an auxiliary support mechanism, the lens not being tested needs manual support, improving efficiency. This application addresses the issues with existing lensometers, such as difficulty stably holding irregularly shaped lenses, which can easily cause them to shift or break, and the lack of support for lenses not being tested, requiring manual support, which increases labor intensity and affects detection accuracy and efficiency.

[0006] The embodiment of the present application provides a lens meter capable of stably clamping a special-shaped lens, comprising a body, wherein the body is provided with a lens clamping mechanism; The lens clamping mechanism includes a carrying platform and a main supporting mechanism, a limiting mechanism and an auxiliary supporting mechanism provided on the carrying platform. The main supporting mechanism and the limiting mechanism are configured to clamp the inspected lens, and the auxiliary supporting mechanism is configured to support a non-inspected lens. The limiting mechanism includes a longitudinal lifting mechanism and a self-adjusting limiting assembly provided at the moving end of the longitudinal lifting mechanism, wherein the self-adjusting limiting assembly includes an annular tube, a cylinder, a first piston and a pressing rod; The annular tube is connected to the moving end of the longitudinal lifting mechanism, the top end of the cylinder is connected to the annular tube, and multiple cylinders are evenly distributed around the axis of the annular tube. The first piston is arranged in the cylinder, one end of the downward pressure rod is connected to the first piston, and the other end extends vertically downward through the cylinder, and multiple downward pressure rods and the main supporting mechanism clamp the lens to be inspected.

[0007] In a feasible implementation, the self-adjusting limit assembly further includes a tube body, a second piston, a display rod and a spring; The tube body is arranged at the moving end of the longitudinal lifting mechanism, and one end of the tube body is connected to the annular tube; The second piston is disposed in the tube body, one end of the display rod is connected to the second piston, the other end of the display rod passes through the other end of the tube body, and a scale mark is provided on the outer wall of the display rod; The spring is sleeved on the display rod, and two ends of the spring respectively abut against the outer wall of the second piston and the inner wall of the tube body.

[0008] In a feasible implementation, the longitudinal lifting mechanism includes a sleeve, a damping member and a connecting rod; The sleeve is arranged on the bearing platform, and the damping member is arranged in the sleeve; The connecting rod is inserted into the sleeve, the connecting rod is slidably connected to the damping member, and the top end of the connecting rod is connected to the outer wall of the tube body.

[0009] In a feasible implementation, the damping member is a rubber ring, and a plurality of the rubber rings are evenly arranged on the inner wall of the sleeve from top to bottom. The rubber rings are sleeved on the connecting rod, and the outer wall of the connecting rod is slidably connected to the inner wall of the rubber ring.

[0010] In a feasible implementation, the main supporting mechanism includes a disc, which is disposed on the supporting platform and is vertically opposite to the annular tube; The disc body is provided with a radial adjustment mechanism, and a plurality of the radial adjustment mechanisms are evenly distributed around the axis of the disc body, and the moving ends of the plurality of radial adjustment mechanisms are all provided with a main support rod; The plurality of pressing rods and the plurality of main supporting rods clamp the lens to be inspected.

[0011] In a feasible implementation, a slide groove is provided on the upper surface of the disc body, a through hole communicating with the slide groove is provided on the side wall of the disc body, and the radial adjustment mechanism is arranged in the slide groove, and the radial adjustment mechanism includes a screw and a slider; The screw rod passes through the through hole from outside to inside, the end of the screw rod is rotatably connected to the inner wall of the slide groove, the slider is slidably connected to the slide groove, a screw hole is provided in the middle of the slider, and the screw rod is screwed to the screw hole of the slider; One end of the main support rod is connected to the slider, and the other end extends vertically upward.

[0012] In a feasible implementation, the auxiliary supporting mechanism includes a transverse adjustment mechanism, a longitudinal adjustment mechanism and an auxiliary support rod; The transverse adjustment mechanism is arranged on the supporting platform, the longitudinal adjustment mechanism is arranged at the moving end of the transverse adjustment mechanism, and the auxiliary support rod is arranged at the moving end of the longitudinal adjustment mechanism.

[0013] In a feasible implementation, the lateral adjustment mechanism includes an extension plate and a sliding member, and the sliding member is slidably connected to the extension plate; The extension plate is provided with a through slot; The sliding member includes an upper plate, a connecting plate and a lower plate. The upper plate and the lower plate are respectively arranged on the upper and lower sides of the extension plate. The connecting plate is arranged in the through groove, and its two ends are respectively connected to the upper plate and the lower plate.

[0014] In a feasible implementation, the longitudinal adjustment mechanism includes an inner screw tube, an outer screw rod, a horizontal plate and a limit rod; The middle and side portions of the sliding member are respectively provided with a mounting hole and a limiting hole, the inner screw tube is rotatably connected to the mounting hole of the sliding member, the outer screw rod is screwed to the inner screw tube, and the top end of the outer screw rod is connected to the horizontal plate; The limiting rod is plugged into the limiting hole, and the top end of the limiting rod is connected to the horizontal plate; One end of the auxiliary support rod is connected to the horizontal plate, and the other end extends vertically upward.

[0015] In a feasible implementation, the plurality of auxiliary support rods are evenly distributed on the horizontal plate along a first direction, and the first direction is perpendicular to the movement direction of the lateral adjustment mechanism.

[0016] The embodiment of the present application provides a focal meter capable of stably clamping irregularly shaped lenses. The main supporting mechanism and the limiting mechanism clamp the lens under test, while the auxiliary supporting mechanism supports the non-tested lens. This allows the tested lens and the non-tested lens to be fixed simultaneously. During testing, the operator does not need to hold the glasses with their hands, effectively reducing labor intensity. In addition, the self-adjusting limit assembly of the limit mechanism cooperates with the annular tube, the cylinder, the first piston and the lower pressure rod, and utilizes the pressure conduction between the annular tube and the medium inside the cylinder to enable multiple lower pressure rods to adaptively adjust the extension length. When clamping special-shaped lenses, even if the upper surface of the lens is not horizontal, the lower pressure rod that contacts the lens first will push the uncontacted lower pressure rods to extend through the medium pressure, and finally all the lower pressure rods are in contact with the upper surface of the lens, forming a stable clamp with the main support mechanism, avoiding unstable clamping or displacement caused by the irregular shape of the lens, and ensuring the stability of the lens during the inspection process. At the same time, the lower pressure rod achieves synchronous adaptive pressure through the medium pressure, rather than rigid contact, and can automatically distribute pressure according to the surface morphology of the lens to ensure uniform force at each contact point. Even when facing irregular surfaces, it can avoid excessive squeezing of the lens by a single or partial lower pressure rod, effectively preventing damage to the lens edge or surface scratches, and protecting the integrity of the inspected lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a focal meter provided by the present application that can stably hold special-shaped lenses; Figure 2 It is a structural diagram of the lens clamping mechanism; Figure 3 It is the front view of the lens holding mechanism; Figure 4 It is a front cross-sectional view of the lens clamping mechanism; Figure 5 is a top cross-sectional view of the lens clamping mechanism; Figure 6 is a cross-sectional view of the auxiliary support mechanism; Figure 7 It is a schematic diagram of the lens clamping mechanism in use.

[0018] Description of reference numerals: 1-body; 2-lens clamping mechanism; 100-carrying platform; 200-main supporting mechanism; 300-limiting mechanism; 400-auxiliary supporting mechanism; 210 - disk; 220 - radial adjustment mechanism; 230 - main support rod; 310 - longitudinal lifting mechanism; 320 - self-adjusting limit assembly; 410 - transverse adjustment mechanism; 420 - longitudinal adjustment mechanism; 430 - auxiliary support rod; 211-slide groove; 212-through hole; 221-screw; 222-slider; 311-sleeve; 312-damping element; 313-connecting rod; 321-annular tube; 322-cylinder; 323-first piston; 324-downward pressure rod; 325-tube; 326-second piston; 327-display rod; 328-spring; 411-extension plate; 412-sliding element; 421-inner screw tube; 422-outer screw; 423-horizontal plate; 424-limiting rod. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0020] Existing lensometers have issues with clamping irregularly shaped lenses and lacking support for lenses not being tested. The clamping points of existing fixing mechanisms don't effectively align with the lens edges, leading to unstable clamping and lens shifting, which can increase measurement errors. Furthermore, existing fixing mechanisms typically only secure the lens being tested, leaving non-tested lenses suspended in the air. These lenses are prone to sagging due to gravity, potentially deforming the frame or damaging the non-tested lenses by colliding with equipment components.

[0021] The focal meter provided in the present application can stably clamp special-shaped lenses. The main supporting mechanism 200 and the limiting mechanism 300 clamp the lens to be tested, and the auxiliary supporting mechanism 400 supports the non-tested lens, so that the tested lens and the non-tested lens are fixed at the same time. During testing, there is no need for the operator to hold the glasses with his hands, which effectively reduces the labor intensity. The lower pressure rod 324 of the self-adjusting limiting component 320 is adaptively adjusted to adapt to the irregular upper surface of the lens to avoid excessive local force. There is no need for manual adjustment, which simplifies operation. With the auxiliary supporting mechanism, there is no need to hold the non-tested lens with hands, which improves efficiency.

[0022] The specific structure of the focal meter provided by the present application that can stably clamp special-shaped lenses is described in detail below with reference to the accompanying drawings.

[0023] Reference Figure 1-Figure 7 As shown, an embodiment of the present application provides a lens meter that can stably clamp special-shaped lenses, including a body 1, which can be a conventional lens meter host. The body 1 is provided with a lens clamping mechanism 2, which is used to fix the lens of the eyeglasses to be examined; The lens clamping mechanism 2 includes a carrier platform 100 and a main supporting mechanism 200, a limiting mechanism 300, and an auxiliary supporting mechanism 400 arranged on the carrier platform 100. The carrier platform 100 can be rectangular and is fixedly connected to the body 1. The main supporting mechanism 200 and the limiting mechanism 300 are used to clamp the inspected lens, and the auxiliary supporting mechanism 400 is used to support the non-inspected lens, thereby achieving the simultaneous fixation of the inspected lens and the non-inspected lens. During the inspection, the operator does not need to hold the glasses with his hands, which effectively reduces the labor intensity. The limiting mechanism 300 includes a longitudinal lifting mechanism 310 and a self-adjusting limiting assembly 320 provided at the movable end of the longitudinal lifting mechanism 310 . The longitudinal lifting mechanism 310 is provided on the carrying platform 100 . Reference Figure 2-Figure 4 As shown, in some embodiments, the self-adjusting limit assembly 320 includes an annular tube 321, a cylinder 322, a first piston 323 and a lower pressing rod 324; The annular tube 321 may be an annular metal tube body, and the annular tube 321 is connected to the moving end of the longitudinal lifting mechanism 310, and the annular tube 321 is horizontally arranged and vertically opposite to the main supporting mechanism 200; Both ends of the cylinder 322 are open ends, the top end of the cylinder 322 is connected to the annular tube 321, and a plurality of the cylinders 322 are evenly distributed around the axis of the annular tube 321. Figure 2 As shown, three cylinders 322 are provided at the lower portion of the annular tube 321 . The three cylinders 322 are all vertically arranged and evenly distributed around the axis of the annular tube 321 . The first piston 323 is disposed in the cylinder 322. One end of the pressing rod 324 is connected to the first piston 323, and the other end extends vertically downward through the cylinder 322. A rubber cap is provided at the bottom end of the pressing rod 324. The multiple pressing rods 324 and the main supporting mechanism 200 clamp the lens to be inspected. The annular tube 321 and the cylinder 322 are filled with air or hydraulic oil. In the natural state, the bottom ends of the three pressing rods 324 are located at the same horizontal plane. When the self-adjusting limit assembly 320 fixes the irregularly shaped lens to be inspected, the longitudinal lifting mechanism 310 drives the annular tube 321 to move downward. When the upper surface of the irregularly shaped lens to be inspected is horizontal, the rubber caps of the three downward pressing rods 324 simultaneously abut against the upper surface of the lens to be inspected, clamping the irregularly shaped lens to be inspected with the main supporting mechanism 200, so that the irregularly shaped lens to be inspected is stably fixed. When the upper surface of the irregularly shaped lens to be inspected is a non-horizontal surface, such as an inclined surface, a spherical surface or an irregular shape, the vertical distances between the three lower pressure rods 324 and the irregularly shaped lens to be inspected are not equal, and the annular tube 321 moves downward, then the rubber caps of one or two lower pressure rods 324 first abut against the upper surface of the lens to be inspected. As the longitudinal lifting mechanism 310 continues to move downward, the lower pressure rod 324 abutting against the lens to be inspected and the first piston 323 connected thereto remain in position, the annular tube 321 and the three cylinders 322 continue to move downward, and the air pressure or hydraulic pressure in the annular tube 321 and the cylinder 322 increases, causing the other lower pressure rods 324 that are not abutting against the lens to be inspected to extend downward until the rubber caps of the three lower pressure rods 324 abut against the upper surface of the irregularly shaped lens to be inspected, and clamp the irregularly shaped lens to be inspected with the main supporting mechanism 200, so that the irregularly shaped lens to be inspected is stably fixed; In summary, no matter what shape the upper surface of the irregularly shaped lens is, the three lower pressure rods 324 of the self-adjusting limit assembly 320 can be self-adjusted, and the ends abut the upper surface of the lens, thereby clamping the irregularly shaped lens to be inspected with the main supporting mechanism 200, so that the irregularly shaped lens to be inspected is stably fixed.

[0024] Furthermore, in some embodiments, in order to control the pressure of the pressing rod 324 on the lens, the self-adjusting limit assembly 320 further includes a tube 325, a second piston 326, a display rod 327 and a spring 328; The tube body 325 may be a metal tube body, and the tube body 325 is disposed at the moving end of the longitudinal lifting mechanism 310 , and one end of the tube body 325 is connected to the annular tube 321 ; The second piston 326 is disposed in the tube body 325. The display rod 327 can be a metal rod. The outer wall of the display rod 327 is provided with a scale mark. One end of the display rod 327 is connected to the second piston 326, and the other end of the display rod 327 passes through the other end of the tube body 325. The spring 328 is sleeved on the display rod 327. The two ends of the spring 328 respectively abut against the outer wall of the second piston 326 and the inner wall of the tube body 325. The spring 328 is always in a compressed state, exerting an inward thrust on the second piston 326, thereby increasing the pressure in the tube body 325 and the annular tube 321, causing the three downward pressing rods 324 to extend out of the cylinder 322 to their maximum length. At this time, the bottom ends of the three downward pressing rods 324 are located at the same horizontal plane. When the self-adjusting limit assembly 320 is working, the longitudinal lifting mechanism 310 drives the annular tube 321 to move downward until the three downward pressure rods 324 all abut against the upper surface of the inspected irregular-shaped lens. The longitudinal lifting mechanism 310 then continues to move downward, and the air pressure or hydraulic pressure in the annular tube 321 increases, pushing the second piston 326 and the display rod 327 outward. The display rod 327 extends out of the tube body 325. The scale mark on the display rod 327 can be read to determine the downward pressure of the downward pressure rod 324 on the inspected lens, thereby ensuring that the inspected lens is stably fixed while avoiding damage to the inspected lens. After operation, the longitudinal lifting mechanism 310 drives the annular tube 321 to move upward, and the three pressing rods 324 are separated from the inspected irregular-shaped lens, and the pressing rods 324 are reset under the elastic force of the spring 328.

[0025] The embodiment of the present application provides a focimeter capable of stably clamping special-shaped lenses, which has the following advantages over existing focimeters: 1. Achieve stable clamping of special-shaped lenses: The self-adjusting limit assembly 320 of the limit mechanism 300, through the coordination of the annular tube 321, the cylinder 322, the first piston 323, and the lower pressure rods 324, utilizes the pressure transmission from the medium within the annular tube 321 and the cylinder 322 to enable the multiple lower pressure rods 324 to adaptively adjust their extension length. When clamping an irregularly shaped lens, even if the lens's upper surface is non-horizontal, the lower pressure rod 324 that first contacts the lens will use the pressure of the medium to push the lower pressure rods 324 that are not in contact to extend. Ultimately, all lower pressure rods 324 abut the lens's upper surface, forming a stable clamp with the main support mechanism 200. This prevents unstable clamping or displacement caused by the irregular shape of the lens, ensuring the stability of the lens during inspection.

[0026] 2. Adapt to various special-shaped lenses: Multiple cylinders 322 are evenly distributed around the axis of annular tube 321. Combined with the self-adjusting function of downward pressure rod 324, this device can accommodate lenses with varying top surface shapes without requiring structural adjustments for specific, irregularly shaped lenses. Compared to traditional lens meters, which are limited to standard-shaped lenses, this device significantly improves its versatility for irregularly shaped lenses, meeting the diverse testing needs of eyewear designs.

[0027] 3. Avoid excessive local force that may damage the lens: The self-adjusting stopper assembly 320's push-down rod 324 uses medium pressure to achieve synchronized, adaptive pressure, rather than rigid contact. This automatically distributes pressure based on the lens' surface morphology, ensuring uniform force at all contact points. Even on irregular surfaces, this prevents excessive compression of the lens by a single or partial push-down rod 324, effectively preventing edge breakage and surface scratches, and protecting the integrity of the lens being inspected.

[0028] 4. Simplify the operation process and improve detection efficiency: The longitudinal lift mechanism 310 drives the self-adjusting limiter assembly 320 upward and downward as a whole. Combined with the automatic adaptability of the lower pressure rods 324, the operator can quickly clamp and secure irregularly shaped lenses without having to manually adjust the position of each lower pressure rod 324. The auxiliary support mechanism 400 supports non-inspected lenses, eliminating the need for manual support. This reduces operational steps, reduces labor intensity, and improves inspection efficiency.

[0029] 5. Quantify pressure and protect lenses: The combination of tube 325, second piston 326, indicator rod 327, and spring 328 enables the self-adjusting limiter assembly 320 to achieve "adaptive clamping of irregularly shaped lenses" while also enhancing pressure controllability and operational safety. The indicator rod 327 serves as the "visual window" of the entire pressure control structure. Its core function is to convert abstract air or hydraulic pressure into directly observable mechanical displacement, enabling precise monitoring of the pressure applied by the lower pressure rod. A scale visually reflects the pressure applied by the lower pressure rod on the lens, preventing over- or under-pressure caused by relying on empirical judgment and ensuring that pressure remains within a safe range. This ensures stable lens fixation while preventing damage to irregularly shaped lenses caused by excessive pressure. Furthermore, the scale provides a unified pressure benchmark, reducing operator variability and improving consistency during inspection or processing.

[0030] Reference Figure 4 As shown, in some embodiments, the longitudinal lifting mechanism 310 includes a sleeve 311, a damping member 312, and a connecting rod 313; The sleeve 311 is a vertically arranged metal tube. The sleeve 311 is arranged on the supporting platform 100 , and the damping member 312 is arranged in the sleeve 311 . The connecting rod 313 is a vertically arranged metal rod, and its diameter is loosely matched with the inner diameter of the sleeve 311. The connecting rod 313 is inserted into the sleeve 311, and the connecting rod 313 is slidably connected to the damping member 312. The top end of the connecting rod 313 is connected to the outer wall of the tube body 325. There is a large damping between the damping member 312 and the connecting rod 313, which realizes self-locking. Manual operation is required to make the connecting rod 313 move up and down relative to the sleeve 311. When in use, a handle can be provided at the bottom end of the connecting rod 313, and the staff uses the handle to drive the connecting rod 313 and the self-adjusting limit assembly 320 to move up and down.

[0031] Furthermore, in some embodiments, the damping member 312 is a rubber ring, and a plurality of the rubber rings are evenly arranged on the inner wall of the sleeve 311 from top to bottom. The rubber rings are sleeved on the connecting rod 313, and the outer wall of the connecting rod 313 is slidably connected to the inner wall of the rubber ring. The outer wall of the rubber ring is tapered, and its inner end extends upward, so that the damping force on the connecting rod 313 when it moves upward relative to the rubber ring is smaller than the damping force on it when it moves downward relative to the rubber ring. Furthermore, when in use, it is convenient to fix the connecting rod 313, and after use, it is convenient to reset the connecting rod 313 upward.

[0032] Reference Figure 1-Figure 5 As shown, in some embodiments, the main supporting mechanism 200 includes a disk 210, which is a circular disk and can be horizontally arranged on the upper surface of the supporting platform 100. The disk 210 is opposite to the annular tube 321 in the upper and lower directions; The disk body 210 is provided with a radial adjustment mechanism 220. A plurality of the radial adjustment mechanisms 220 are evenly distributed around the axis of the disk body 210. The moving ends of the radial adjustment mechanisms 220 move along the diameter direction of the disk body 210. The moving ends of the plurality of radial adjustment mechanisms 220 are each provided with a main support rod 230 so that the position of the main support rod 230 is adjustable, so that the plurality of main support rods 230 support the edge area of ​​the lens to be inspected. The plurality of pressing rods 324 and the plurality of main supporting rods 230 clamp the lens to be inspected.

[0033] Reference Figure 4 and Figure 5 As shown, in some embodiments, the upper surface of the disk body 210 is provided with a slide groove 211, which can be a rectangular groove body, and its length direction passes through the center of the disk body 210, and the side wall of the disk body 210 is provided with a through hole 212 connected to the slide groove 211. Figure 5 In the embodiment, the disc body 210 is provided with three chutes 211 and three through holes 212. The three chutes 211 are evenly distributed around the axis of the disc body 210, and the three through holes 212 correspond to the three chutes 211 one by one. The radial adjustment mechanism 220 is disposed in the slide groove 211 , and the radial adjustment mechanism 220 includes a screw 221 and a slider 222 ; The screw 221 passes through the through hole 212 from outside to inside, and the screw 221 is rotatably connected to the through hole 212. The inner end of the screw 221 is rotatably connected to the inner end inner wall of the chute 211. The screw 221 can be set in the middle of the chute 211. The slider 222 may be a rectangular parallelepiped structure, the slider 222 is slidably connected to the slide groove 211, a screw hole is provided in the middle of the slider 222, the screw 221 is screwed into the screw hole of the slider 222, one end of the main support rod 230 is connected to the slider 222, and the other end extends vertically upward, and a rubber cap is provided on the top of the main support rod 230; A knob is provided at the outer end of the screw rod 221. When the screw rod 221 is rotated clockwise by the knob, the slider 222 drives the main support rod 230 to move outward in the slide groove 211. Conversely, when the knob is rotated counterclockwise, the slider 222 drives the main support rod 230 to move inward in the slide groove 211, thereby adjusting the position of the main support rod 230 so that the rubber cap of the main support rod 230 supports the edge of the lens to be inspected.

[0034] Reference Figure 4-Figure 6 As shown, in some embodiments, the auxiliary supporting mechanism 400 includes a transverse adjustment mechanism 410, a longitudinal adjustment mechanism 420, and an auxiliary support rod 430; The lateral adjustment mechanism 410 is arranged on the supporting platform 100, and the moving end of the lateral adjustment mechanism 410 can move laterally. The longitudinal adjustment mechanism 420 is arranged at the moving end of the lateral adjustment mechanism 410, and the moving end of the longitudinal adjustment mechanism 420 can move longitudinally. The auxiliary support rod 430 is arranged at the moving end of the longitudinal adjustment mechanism 420, and a rubber cap is provided on the top of the auxiliary support rod 430. The distance between the auxiliary support rod 430 and the main support rod 230 is adjusted by the lateral adjustment mechanism 410, and the height of the auxiliary support rod 430 is adjusted by the longitudinal adjustment mechanism 420, so that the auxiliary support rod 430 supports the appropriate position of the non-inspected lens, so that the non-inspected lens and the inspected lens are almost in a horizontal state, which is convenient for detection and avoids deformation or collision damage of the frame due to suspension of the non-inspected lens, thereby protecting the overall structure of the glasses; in addition, the operator's hands are freed, which is convenient for simultaneous operations such as parameter adjustment of the focal meter, significantly improving the detection efficiency.

[0035] Furthermore, in some embodiments, the transverse adjustment mechanism 410 includes an extension plate 411 and a sliding member 412 , wherein the sliding member 412 is slidably connected to the extension plate 411 , and the longitudinal adjustment mechanism 420 is disposed on the sliding member 412 ; The extension plate 411 may be a rectangular plate, and the extension plate 411 is fixed to the upper surface of the carrier 100. The disc 210 may be disposed on the upper surface of the extension plate 411. The extension plate 411 is provided with a through slot, which may be rectangular. The sliding member 412 includes an upper plate, a connecting plate, and a lower plate. The upper plate and the lower plate are respectively disposed on the upper and lower sides of the extension plate 411. The connecting plate is disposed in the through groove, and its two ends are respectively connected to the upper plate and the lower plate. During use, the sliding member 412 can be manually pushed to move laterally, thereby driving the longitudinal adjustment mechanism 420 and the auxiliary support rod 430 to move.

[0036] Furthermore, in some embodiments, the longitudinal adjustment mechanism 420 includes an inner screw tube 421 , an outer screw rod 422 , a horizontal plate 423 , and a limiting rod 424 ; The middle and side portions of the sliding member 412 are respectively provided with mounting holes and limiting holes. The inner screw tube 421 is a vertically arranged metal tube body, and the inner screw tube 421 is rotatably connected to the mounting hole of the sliding member 412. The outer screw rod 422 is screwed to the inner screw tube 421, and the top end of the outer screw rod 422 is connected to the horizontal plate 423, which is a horizontally arranged rectangular plate body. The limiting rod 424 is a vertically arranged metal rod body, the limiting rod 424 is plugged into the limiting hole, and the top end of the limiting rod 424 is connected to the horizontal plate 423; One end of the auxiliary support rod 430 is connected to the horizontal plate 423, and the other end extends vertically upward; A knob is provided at the bottom end of the inner screw tube 421. When the inner screw tube 421 is rotated clockwise by the knob, the outer screw rod 422 cannot rotate due to the limiting action of the horizontal plate 423 and the limiting rod 424, thereby driving the horizontal plate 423 and the auxiliary support rod 430 to move upward; conversely, when the inner screw tube 421 is rotated counterclockwise by the knob, the outer screw rod 422 drives the horizontal plate 423 and the auxiliary support rod 430 to move downward, thereby adjusting the height of the auxiliary support rod 430 so that the auxiliary support rod 430 supports the non-inspected lens.

[0037] Reference Figure 5 As shown, in some embodiments, the plurality of auxiliary support rods 430 are evenly distributed on the horizontal plate 423 along a first direction, and the first direction is perpendicular to the movement direction of the lateral adjustment mechanism 410; exist Figure 5 In the embodiment, two auxiliary support rods 430 are provided, and the arrangement direction of the two auxiliary support rods 430 is perpendicular to the movement direction of the lateral adjustment mechanism 410, so as to facilitate supporting lenses of different widths.

[0038] According to the above technical features, the working principle of the focal meter capable of stably clamping special-shaped lenses provided by this application in actual application scenarios is as follows: Reference Figure 7 As shown, Figure 7 A is the lens to be tested, and B is the lens not to be tested; When in use, the position of the main support rod 230 is adjusted according to the size of the lens A to be inspected, and then the lens A to be inspected is placed on the main support rod 230 so that multiple main support rods 230 support the edge of the lens A to be inspected; According to the position and height of the non-inspected lens B, adjust the position and height of the auxiliary support rod 430 so that the auxiliary support rod 430 supports the non-inspected lens B; Pull down the connecting rod 313 to move the annular tube 321 downward. The three pressing rods 324 all abut against the upper surface of the inspected lens A. Observe the scale marks on the display rod 327 and control the downward pressure of the pressing rods 324 on the inspected lens, thereby ensuring that the inspected lens is stably fixed while avoiding damage to the inspected lens.

[0039] In this application, the main supporting mechanism 200 and the limiting mechanism 300 clamp the inspected lens, and the auxiliary supporting mechanism 400 supports the non-inspected lens, so that the inspected lens and the non-inspected lens are fixed at the same time. During the inspection, the operator does not need to hold the glasses with his hands, which effectively reduces the labor intensity. In addition, the position of the main support rod 230 in the main supporting mechanism 200 can be adjusted by the radial adjustment mechanism 220, so that multiple main support rods 230 can stably support the edge of the special-shaped lens, and the lower pressure rod 324 of the self-adjusting limit assembly 320 can be adaptively adjusted to adapt to the irregular upper surface of the lens to avoid excessive local force; no manual adjustment is required, which simplifies the operation, and with the auxiliary supporting mechanism, there is no need to hold the non-inspected lens by hand, which improves efficiency.

[0040] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on the several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0041] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. A focal meter capable of stably holding special-shaped lenses, characterized by: It comprises a machine body (1), wherein the machine body (1) is provided with a lens clamping mechanism (2); The lens clamping mechanism (2) comprises a carrier platform (100), and a main supporting mechanism (200), a limiting mechanism (300), and an auxiliary supporting mechanism (400) arranged on the carrier platform (100); the main supporting mechanism (200) and the limiting mechanism (300) are configured to clamp a lens to be inspected, and the auxiliary supporting mechanism (400) is configured to support a lens not to be inspected; The limiting mechanism (300) comprises a longitudinal lifting mechanism (310) and a self-adjusting limiting assembly (320) provided at a moving end of the longitudinal lifting mechanism (310), wherein the self-adjusting limiting assembly (320) comprises an annular tube (321), a cylinder (322), a first piston (323), and a lower pressing rod (324); The annular tube (321) is connected to the moving end of the longitudinal lifting mechanism (310), the top end of the cylinder (322) is connected to the annular tube (321), and a plurality of cylinders (322) are evenly distributed around the axis of the annular tube (321), the first piston (323) is arranged in the cylinder (322), one end of the pressing rod (324) is connected to the first piston (323), and the other end extends vertically downward through the cylinder (322), and the plurality of pressing rods (324) and the main supporting mechanism (200) clamp the lens to be inspected.

2. The lens meter capable of stably holding special-shaped lenses according to claim 1, characterized in that: The self-adjusting limit assembly (320) further includes a tube body (325), a second piston (326), a display rod (327), and a spring (328); The tube body (325) is arranged at the moving end of the longitudinal lifting mechanism (310), and one end of the tube body (325) is connected to the annular tube (321); The second piston (326) is disposed in the tube body (325), one end of the display rod (327) is connected to the second piston (326), the other end of the display rod (327) passes through the other end of the tube body (325), and a scale mark is provided on the outer wall of the display rod (327); The spring (328) is sleeved on the display rod (327), and two ends of the spring (328) respectively abut against the outer wall of the second piston (326) and the inner wall of the tube body (325).

3. The focal meter capable of stably holding special-shaped lenses according to claim 2, characterized in that: The longitudinal lifting mechanism (310) comprises a sleeve (311), a damping member (312), and a connecting rod (313); The sleeve (311) is arranged on the supporting platform (100), and the damping member (312) is arranged in the sleeve (311); The connecting rod (313) is plugged into the sleeve (311), the connecting rod (313) is slidably connected to the damping member (312), and the top end of the connecting rod (313) is connected to the outer wall of the tube body (325).

4. The focal meter capable of stably holding special-shaped lenses according to claim 3, characterized in that: The damping member (312) is a rubber ring, and a plurality of the rubber rings are evenly arranged on the inner wall of the sleeve (311) from top to bottom. The rubber rings are sleeved on the connecting rod (313), and the outer wall of the connecting rod (313) is slidably connected to the inner wall of the rubber ring.

5. The lens meter capable of stably holding special-shaped lenses according to claim 1, characterized in that: The main supporting mechanism (200) comprises a disc (210), wherein the disc (210) is arranged on the supporting platform (100) and is vertically opposite to the annular tube (321); The disk body (210) is provided with a radial adjustment mechanism (220), a plurality of the radial adjustment mechanisms (220) are evenly distributed around the axis of the disk body (210), and a main support rod (230) is provided at the moving end of each of the plurality of radial adjustment mechanisms (220); The plurality of lower pressing rods (324) and the plurality of main supporting rods (230) clamp the inspected lens.

6. The focal meter capable of stably holding special-shaped lenses according to claim 5, characterized in that: A slide groove (211) is provided on the upper surface of the disk body (210), a through hole (212) communicating with the slide groove (211) is provided on the side wall of the disk body (210), and the radial adjustment mechanism (220) is arranged in the slide groove (211), and the radial adjustment mechanism (220) includes a screw (221) and a slider (222); The screw rod (221) passes through the through hole (212) from the outside to the inside, the end of the screw rod (221) is rotatably connected to the inner wall of the slide groove (211), the slider (222) is slidably connected to the slide groove (211), a screw hole is provided in the middle of the slider (222), and the screw rod (221) is screwed to the screw hole of the slider (222); One end of the main support rod (230) is connected to the slider (222), and the other end extends vertically upward.

7. The focal meter capable of stably holding special-shaped lenses according to claim 1, characterized in that: The auxiliary supporting mechanism (400) comprises a transverse adjustment mechanism (410), a longitudinal adjustment mechanism (420), and an auxiliary support rod (430); The transverse adjustment mechanism (410) is arranged on the supporting platform (100), the longitudinal adjustment mechanism (420) is arranged at the moving end of the transverse adjustment mechanism (410), and the auxiliary support rod (430) is arranged at the moving end of the longitudinal adjustment mechanism (420).

8. The focal meter capable of stably holding special-shaped lenses according to claim 7, characterized in that: The lateral adjustment mechanism (410) comprises an extension plate (411) and a sliding member (412), wherein the sliding member (412) is slidably connected to the extension plate (411); The extension plate (411) is provided with a through slot; The sliding member (412) comprises an upper plate, a connecting plate and a lower plate. The upper plate and the lower plate are respectively arranged on the upper and lower sides of the extension plate (411). The connecting plate is arranged in the through groove, and its two ends are respectively connected to the upper plate and the lower plate.

9. The focal meter capable of stably holding special-shaped lenses according to claim 8, characterized in that: The longitudinal adjustment mechanism (420) comprises an inner screw tube (421), an outer screw rod (422), a horizontal plate (423), and a limiting rod (424); The middle and side portions of the sliding member (412) are respectively provided with a mounting hole and a limiting hole, the inner screw tube (421) is rotatably connected to the mounting hole of the sliding member (412), the outer screw rod (422) is screwed to the inner screw tube (421), and the top end of the outer screw rod (422) is connected to the horizontal plate (423); The limiting rod (424) is plugged into the limiting hole, and the top end of the limiting rod (424) is connected to the horizontal plate (423); One end of the auxiliary support rod (430) is connected to the horizontal plate (423), and the other end extends vertically upward.

10. The focal meter capable of stably holding special-shaped lenses according to any one of claims 7 to 9, characterized in that: The plurality of auxiliary support rods (430) are evenly distributed on the horizontal plate (423) along a first direction, wherein the first direction is perpendicular to the movement direction of the lateral adjustment mechanism (410).

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