Glued lens automatic centering structure

Abstract

The invention relates to a glued lens automatic centering structure which comprises a mounting table, and an aligning device is mounted on the mounting table. The aligning device comprises a second precise displacement table, the second precise displacement table is mounted on the mounting table, a concentric device and a microscope are further mounted on the mounting table, and a jacking assembly is mounted on the microscope; the concentric device comprises a centering base, a centering side plate is vertically and fixedly installed on the upper portion of the centering base, a centering mechanism and a precise movement assembly are arranged on the centering side plate, and the precise movement assembly can drive the centering mechanism to move up and down. The concentric device further comprises a height assembly, the height assembly comprises a first microdrum and a first air cylinder, the first microdrum is installed on the centering mechanism, the first air cylinder is installed on the centering bottom plate, and a detector is installed at the extending end of the first air cylinder. The aligning device is matched with the concentric device and the microscope to detect the concentricity of the glued lens; the device is more convenient to operate, high in automation degree, capable of improving the gluing efficiency and high in reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of optical lens preparation, and in particular relates to an automatic centering structure for a glued lens. Background Art

[0002] In the field of optical technology, the centering process of optical lenses plays an extremely important role. In the prior art, the lens centering operation is performed manually. In the process of centering the glued lens, it is very important to use a centering instrument to adjust the concentricity of the upper lens and the lower lens. Generally, after adjusting the height, applicable distance and reference of the microscope, the upper lens and the lower lens are glued and the glued lens after the bubbles are exhausted is placed on the lower fixture of the centering instrument. After fixing the lower lens in the glued lens on the loading position of the lower fixture with the thumb and index finger, use the other hand to operate the ejector fixture under the microscope to slightly adjust the upper lens, and at the same time observe whether the cross cursor on the display has moved to the reference point. This process is the centering process of the glued lens. When it moves to the cross cursor point position, the centering is completed, and the foot pedal turns on the UV lamp to fix the upper and lower lenses. This process requires repeated manual operations to adjust the concentricity of the upper lens and the lower lens. In addition, the manual handheld ejector fixture needs to carefully control the force applied to the upper lens while slightly adjusting the upper lens. Excessive force may cause the special glue used between the upper lens and the lower lens to overflow or cause poor appearance, thereby increasing the defective rate and affecting production efficiency. It is time-consuming and labor-intensive, not only inefficient and costly, but also harmful to the human body due to long-term exposure to ultraviolet light. In addition, manual operation is highly subjective and has a high error rate, resulting in poor product consistency and low automation.

[0003] There are some centering devices on the market now. Although they can complete the centering, they are too cumbersome to adjust when changing different products due to the different sizes of the glued lenses. The force applied to the glued lenses cannot allow the operator to obtain the current actual force value at a glance, and the height (thickness) difference before and after the replacement cannot be adjusted when adjusting different products (glue-bonded lenses). The force applied to the glued lenses before and after the replacement cannot be controlled and cannot be kept the same, which makes the centering process adjustment method cumbersome. In the centering process, the concentricity and eccentricity of the glued lenses are frequently offset by external factors. In view of the above problems, it is necessary to study an automatic centering structure for glued lenses. Summary of the invention

[0004] The present invention is aimed at solving the above-mentioned problems and proposes an automatic centering structure for a glued lens.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] An automatic centering structure for a glued lens comprises a mounting platform, on which a centering device is mounted;

[0007] The centering device comprises a second precision displacement stage, which is mounted on a mounting platform, a zoom light-emitting tube assembly is mounted above the second precision displacement stage, and the second precision displacement stage can move the zoom light-emitting tube assembly in the front-back and / or left-right directions, a concentric device and a microscope are also mounted on the mounting platform, and a top holding assembly is mounted on the microscope;

[0008] The concentric device comprises a centering base, a centering side plate is vertically fixedly installed on the upper part of the centering bottom plate, a centering mechanism and a precision motion component are arranged on the centering side plate, and the precision motion component can drive the centering mechanism to move up and down; the concentric device also comprises a height component, and the height component comprises a first differential cylinder and a first cylinder, the first differential cylinder is installed on the centering mechanism, the first cylinder is installed on the centering bottom plate, a detector is installed on the extended end of the first cylinder, when the centering mechanism moves downward, the measuring rod of the first differential cylinder can contact the detector, the detector can detect the pressure applied by the centering mechanism to the upper and lower lenses of the glued lens, and the first differential cylinder can adjust the pressure applied by the centering mechanism to the upper and lower lenses of the glued lens by adjusting the extended length of its measuring rod;

[0009] The centering device detects the concentricity of the glued lens by cooperating with the concentric device and the microscope.

[0010] Furthermore, the concentric device also includes a side fixing block, one end of which is fixed to the protruding end of the first cylinder, and the other side is freely inserted into the centering base plate. The detector is mounted on the side fixing block and is located directly above the protruding end of the first cylinder. When the measuring rod of the first differential cylinder presses the detector downward, the protruding end of the first cylinder drives the side fixing block to move downward, and the side fixing block prevents the protruding end of the cylinder from rotating.

[0011] Furthermore, a lifting plate is fixedly mounted on the centering mechanism, and the lifting plate is mounted on the precision motion component. The precision motion component can prevent the centering mechanism from moving downward under the action of gravity through the lifting plate, and can drive the centering mechanism to move upward through the lifting plate.

[0012] Furthermore, the zoom light-emitting tube assembly includes a light source tube base, an inner slide tube is provided inside the light source tube base, the center of the inner slide tube is a through hole, a light source is provided inside the inner slide tube, a cross scale is provided on the top of the inner slide tube, and a focusing lens tube is provided on the top of the light source tube base, and the light source can move up and down inside the light source tube base.

[0013] Furthermore, the microscope includes a microscope base, which extends forward to form a middle through hole structure, and a fixture seat is arranged on the surface of the through hole structure; the microscope base forms a bracket upward, and a lens barrel is arranged on the bracket, an objective lens is arranged below the lens barrel, an eyepiece is arranged above the lens barrel, and a CCD camera is arranged on the eyepiece. The lens barrel can move up and down to obtain image information of the concentricity of the lower lens and the upper lens on the loading position of the fixture seat presented in the microscope.

[0014] Furthermore, the centering mechanism includes a guide rail slider, which is fixedly mounted on the centering side plate, a lifting fixed block is slidably mounted on the guide rail slider, a centering fixed block is provided on the lifting fixed block, a horizontal plate is mounted on the centering fixed block, and a centering cover is mounted on the front end of the horizontal plate.

[0015] Furthermore, the precision motion component is a lead screw structure or a cylinder lifting structure.

[0016] Furthermore, it also includes a first precision displacement stage, wherein the first precision displacement stage is fixedly mounted on the centering base, and the centering bottom plate is fixedly mounted on the upper surface of the first precision displacement stage.

[0017] Furthermore, at least one pair of baffles is provided on the front surface of the lifting and fixing block, the centering and fixing block is fixedly installed on the front surface of the lifting and fixing block, and the centering and fixing block is limited by the baffles.

[0018] Furthermore, a left fixed block is fixedly installed on the top end of the centering side plate to limit the centering mechanism.

[0019] The advantages and positive effects of the present invention are:

[0020] The present invention realizes automatic centering and positioning of the upper lens and the lower lens of the glued lens, can more accurately control the gravity (pressure) applied between the upper lens and the lower lens of the glued lens, is more flexible to operate, has high repeatability and strong consistency, and can clearly know the current gravity (pressure) value at a glance when replacing glued lenses of different products (glue lenses) with different outer diameters and overlapping heights, can make fine adjustments according to the gravity (pressure) value applied to the upper and lower lenses of the glued lens, and can effectively adjust and control the different heights (thicknesses) required before and after the replacement of different products (glue lenses). The adjustment method can keep the same gravity (pressure) before and after the replacement of different products (glue lenses), better realize the automatic centering of the upper lens and the lower lens of the glued lens, make the operation more convenient, have a high degree of automation, improve the gluing efficiency and have strong reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0022] Figure 1 is a structural schematic diagram of an automatic centering structure for a glued lens provided in Example 1 of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a concentric device of an automatic centering structure for a glued lens provided in Example 1 of the present invention;

[0024] Figure 3 2 is a schematic structural diagram of a concentric device of an automatic centering structure for a glued lens provided in Example 2 of the present invention;

[0025] Figure 4 It is a structural cross-sectional view of a microscope with a glued lens automatic centering structure provided in Example 1 of the present invention;

[0026] Figure 5 It is a structural schematic diagram of one side of a microscope with a glued lens automatic centering structure provided in Example 1 of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the other side of a microscope having an automatic centering structure for a glued lens provided in Example 1 of the present invention;

[0028] Figure 7 It is a structural cross-sectional view of a zoom light-emitting tube assembly with a glued lens automatic centering structure provided in Example 1 of the present invention; DETAILED DESCRIPTION

[0029] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted arbitrarily between these technical features (or their equivalents), so as to obtain more other embodiments of the present invention that may not be directly mentioned in this document; in addition, in order to simplify the drawings, the same or similar technical features may be marked only in one place in the same drawing.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0031] Example 1

[0032] like Figure 1 , 2 As shown in Figures 4, 5, 6 and 7, an automatic centering structure for a glued lens includes a mounting table 3, on which a centering device 1 is installed; specifically, the mounting table 3 includes a shock-absorbing plate, on which a mounting plate is provided. It should be noted that the mounting table 3 reduces external vibrations and makes the devices, microscopes and other mechanisms installed on the mounting table more stable.

[0033] The centering device 1 includes a second precision displacement stage 62, which is mounted on the mounting platform 3. A zoom light-emitting tube assembly 50 is mounted above the second precision displacement stage 62. The second precision displacement stage 62 can move the zoom light-emitting tube assembly 50 in the front-back and / or left-right directions. The mounting platform 3 is also mounted with a concentric device 2 and a microscope 6, and a top holding assembly 5 is mounted on the microscope 6.

[0034] Specifically, the centering device 1 includes a fixed base plate 33, on which a second precision displacement platform 62 is provided, the center of the second precision displacement platform 62 is a through hole, on which a fixed plate 61 is provided, the center of the fixed plate 61 is a through hole, and on which a zoom light-emitting tube assembly 50 is provided. The centering device 1 adjusts the zoom light-emitting tube assembly 50 through the second precision displacement platform 62 to move and cooperate with the concentric device 2 and the microscope 6 to detect the concentricity of the glued lens.

[0035] Specifically, the zoom light-emitting tube assembly 50 includes a light source tube base 60, the center of the light source tube base 60 is a through hole, an inner slide 59 is provided inside the light source tube base 60, the center of the inner slide 59 is a through hole, a light source fixing seat 58 is provided inside the inner slide 59, a light source 56 is provided on the light source fixing seat 58, the light source fixing seat 58 is fixed to the inner slide 59, a cross scale piece 53 is provided on the top of the inner slide 59, a focusing lens tube 51 is provided on the top of the light source tube base 60, and the light source can move up and down inside the light source tube base 60. Specifically A rotating hand wheel 55 is sleeved on the outer wall of the light source tube base 60. After the rotating hand wheel 55 is inserted, the locking ring 52 is set on the outer ring of the top of the light source tube base 60 and tightened. A fixing column 63 is provided on the middle side of the inner slide 59. One end of the fixing column 63 extends out of the light source tube base 60, and the extended fixing column 63 is embedded in the rotating hand wheel 55. When the rotating hand wheel 55 is rotated, the fixing column 63 rotates and moves with the rotating hand wheel 55, so that the inner slide 59 moves up and down along the inner wall of the light source tube base 60. In addition, a focusing lens tube 51 is provided on the top of the light source tube base 60;

[0036] The microscope 6 includes a microscope base 32, which extends forward to form a middle through-hole structure, and a fixture seat 30 is arranged on the surface of the through-hole structure; the microscope base 32 forms a bracket 29 upward, and a lens barrel 22 is arranged on the bracket 29, an objective lens 28 is arranged below the lens barrel 22, an eyepiece 21 is arranged above the lens barrel 22, and a CCD camera 20 is arranged on the eyepiece 21. The lens barrel 22 can move up and down to obtain image information of the concentricity of the lower lens and the upper lens on the loading position of the fixture seat 30 presented in the microscope 6.

[0037] Specifically, the microscope 6 includes a microscope base 32, which is fixedly connected to a fixed bottom plate 33. The microscope base 32 extends forward to form a middle through-hole structure, and an adjustment plate 35 is installed on the through-hole structure. The center of the adjustment plate 35 is a through-hole. A jig adapter 31 is installed on the adjustment plate 35. The center of the jig adapter 31 is a through-hole. A jig seat 30 is installed on the jig adapter 31. The center of the jig seat 30 is a through-hole. The structure of the jig seat 30 is not subject to this limitation, and any shape and structure that can meet the actual effect required for the glued lens can be used. The jig seat 30 is used to carry the upper lens that has been glued and exhausted. and the lower lens; a bracket 29 is provided at the rearward extension position of the fixed base 32, a dovetail slide assembly 25 is provided on the bracket 29, a fixed block 23 is provided at the other end of the dovetail slide assembly 25, the vertical center of the fixed block 23 is a through hole, a lens barrel 22 is installed in the through hole of the fixed block 23, an objective lens 28 is provided below the lens barrel 22, an eyepiece 21 is provided above the lens barrel 22, a CCD camera 20 is provided on the eyepiece 21, a fixed block fastening wheel 26 is provided at the front end of the fixed block 23, the fixed block 23 is locked while fixing the lens barrel 22, so as to obtain image information of the concentricity of the lower lens and the upper lens on the loading position of the fixture seat 30 presented in the microscope 6.

[0038] Specifically, the dovetail slide assembly 25 includes a dovetail base 251 and a dovetail slider 256. A rack 253 is installed on the dovetail base 251, and a gear 252 is installed on the dovetail slider 256. The rack 253 interacts with the gear 252. An extension rod at one end of the gear 252 is installed in the gear fixing cylinder on the dovetail slider 256 and is fixed through a knurled handwheel 259. A fastening plate 255 is provided inside one side of the dovetail slider 256. The fastening plate 255 fixes the up and down moving positions of the dovetail base 251 and the dovetail slider 256 in the dovetail slide assembly 25 through a locking knob 258 on the outside of the dovetail slider.

[0039] Figure 2As shown, the concentric device 2 provided in this embodiment includes a centering base 109, a first precision displacement stage 103 is provided on the centering base 109, a centering bottom plate 100 is provided on the first precision displacement stage 103, a centering side plate 83 is vertically provided on the centering bottom plate 100, a centering mechanism and a precision motion component 123 are provided on the centering side plate 83, and the precision motion component 123 can drive the centering mechanism to move up and down;

[0040] The lens assembly 122 further includes a height assembly 122, the height assembly 122 includes a first differential cylinder 110 and a first cylinder 111, the first differential cylinder 110 is mounted on a centering mechanism, the first cylinder 111 is mounted on a centering base plate 100, a detector 106 is mounted on the extended end of the first cylinder 111, when the centering mechanism moves downward, the measuring rod of the first differential cylinder 110 can contact the detector 106, the detector 106 can detect the gravity (pressure) applied to the upper and lower lenses of the laminated lens by the centering mechanism, and the first differential cylinder 110 can adjust the pressure applied to the upper and lower lenses of the laminated lens by the centering mechanism by adjusting the extended length of its measuring rod;

[0041] It also includes a side fixing block 105, one end of which is fixed to the protruding end of the first cylinder 111, and the other side is freely inserted into the centering base plate 100. The detector 106 is mounted on the side fixing block 105 and is located directly above the protruding end of the first cylinder 111. When the measuring rod of the first differential cylinder 110 presses the detector 106 downward, the protruding end of the first cylinder 111 drives the side fixing block 105 to move downward, and the side fixing block 105 prevents the protruding end of the first cylinder 111 from rotating.

[0042] A lifting plate 82 is fixedly installed on the centering mechanism, and the lifting plate 82 is mounted on the precision motion component 123. The precision motion component 123 can prevent the centering mechanism from moving downward under the action of gravity through the lifting plate 82, and can drive the centering mechanism to move upward through the lifting plate 82. In this embodiment, the precision motion component 123 is a cylinder lifting structure, specifically, Figure 2As shown, the second cylinder 85 is fixedly mounted on the fixed bracket 80, and the fixed bracket 80 is fixedly mounted on the centering side plate 83, and the lifting plate 82 is overlapped on the top of the extended end of the cylinder lifting structure. In order to increase the stability of the up and down movement of the centering mechanism, it can be considered to install a lifting column on the top of the extended end of the cylinder lifting structure. At this time, it passes through the reserved circular hole on the lifting plate 82 and overlaps on the lifting column, and when the extended end of the second cylinder 85 is extended, it can drive the lifting plate 82 to move upward, and the reserved circular hole cooperates with the lifting column to stabilize the lifting plate 82; when the extended end of the second cylinder 85 retracts, the centering mechanism slides downward along the centering side plate 83 under the action of gravity, and when the extended end of the second cylinder 85 is extended, it drives the lifting plate to move upward, thereby causing the centering mechanism to move upward, and in order to prevent the centering mechanism from escaping from the centering side plate 83 when moving upward, it can be considered to fix a left fixed block 81 on the top of the centering side plate 83 to limit the centering mechanism;

[0043] Specifically, the centering mechanism includes a guide rail slider 98, the guide rail slider 98 is fixedly installed on the centering side plate 83, the lifting and fixing block 88 is slidably installed on the guide rail slider 98, the lifting and fixing block 88 is fixedly installed on the centering fixing block 91, the horizontal plate 89 is installed on the centering fixing block 91, and the centering cover 90 is installed at the front end of the horizontal plate 89; in order to better ensure the horizontal stability of the horizontal plate 89 during the centering process, it can be considered that at least one pair of baffles are provided on the front surface of the lifting and fixing block 88, the centering fixing block 91 is fixedly installed on the front surface of the lifting and fixing block 88, and the centering fixing block 91 is limited by the baffle.

[0044] In order to increase the stability of the centering mechanism, it can be considered to further include a centering support plate 95 , which is fixedly mounted on the back of the centering side plate 83 , and the centering support plate 95 is fixedly connected to the centering bottom plate 100 .

[0045] It should be noted that the first precision translation stage 103 is a two-dimensional platform, which can adopt existing products and can move in the X-axis and Y-axis directions to more accurately adjust the concentricity of the lower lens and the upper lens of the glued lens; similarly, the second precision translation stage 62 is also a two-dimensional platform, which can adopt existing products and can move in the X-axis and Y-axis directions.

[0046] like Figure 1 , 2As shown, in actual operation, when the centering mechanism moves downward, the measuring rod of the first differential cylinder 110 can contact the detector 106, and the detector 106 can detect the gravity (pressure) given to the upper and lower lenses of the laminated lens by the centering mechanism. When replacing different products (laminated lenses), the height component 122 is adjusted according to the height (thickness) required before and after replacement when replacing different products (laminated lenses), and can more accurately control the position of the centering cover 90 contacting the lower lens and the upper lens of the laminated film on the loading position of the jig seat; the detector 106 cooperates with the height component 122 to more accurately control the centering cover 90 to apply the gravity (pressure) of the lower lens and the upper lens of the laminated lens on the loading position of the jig seat, and the consistency and the same gravity (pressure) given to the upper and lower lenses of the laminated lens by the centering mechanism before and after replacement when replacing different products (laminated lenses), effectively avoiding glue overflow and poor appearance.

[0047] The supporting component 5 can adopt existing products, and its main function is to fix the glued lens on the loading position of the fixture seat to keep it in a fixed position to achieve better centering. As long as the structure can achieve the above functions, it is not limited to a specific structure.

[0048] The microscope 6, the concentric device 2, and the centering device 1 cooperate with each other to more accurately measure the concentricity of the lower lens and the upper lens of the laminated lens on the loading position of the fixture seat 30; at the same time, the concentric device 2 can better realize the precise, convenient and fast control of the centering cover 90 and the gravity (pressure) of the upper lens and the lower lens of the laminated lens, better ensure the consistency of repeated automatic centering, and better solve the adjustment method of the height (thickness) difference before and after replacement when different products (laminated lenses) need to be replaced frequently in actual work, so that the operation is simple and easy to understand, and the repeatability accuracy is high. The centering cover 90 is a circular fixture, which can be fixed in four directions. The centering cover 90 can be circular or square and is not limited by the present appearance. Any shape and structure that meets the actual effect can be used to adjust the concentricity of the lower lens and the upper lens of the laminated film.

[0049] As an example, when the automatic centering mechanism is used, the centering cover 90 in the concentric device 2 repeatedly moves up and down to fit the glued lenses. Sometimes, glue overflow occurs when the two glued lenses stacked together are centered. At this time, the height component 122 and the detector 106 in the concentric device 2 cooperate to control the gravity (pressure) applied to the glued lenses by the centering cover 90 in contact with the glued lenses, and the gravity (pressure) value currently applied to the glued lenses by the centering cover 90 is determined according to the gravity (pressure) value set on the touch screen. When it is greater than or less than the value set on the touch screen, the centering device automatically alarms and stops to wait for confirmation of the current problem, effectively and urgently controlling the glue overflow or poor appearance of the two glued lenses stacked together. During the automatic centering process, when different products (glue lenses) are replaced, the difference between before and after the replacement is When the height (thickness) value changes, the operator only needs to adjust the first differential cylinder 110 in the height component 122 in the concentric device 2 to actually control the gravity (pressure) and the required height (thickness) applied by the centering cover 90 to the glued lens, and can maintain the same gravity (pressure) before and after the replacement when changing different products (glue lenses), and more efficiently control the gravity (pressure) required for the centering cover 90 to move the glued lens in contact; when the centering device 1 is automatically centered, it better cooperates with the microscope, and the position is better adjusted and locked through the precision displacement stage, and the zoom light tube assembly 50 is easier to operate; when the microscope is automatically centered, the glued lens in the loading position of the fixture seat 30 on the microscope is more stable during the centering process, solving the problem of eccentric offset caused by external vibration.

[0050] In actual operation, first put the standard glued lens into the loading position of the fixture seat 30, click the holding component 5 on the touch screen to move forward, and the holding component 5 holds and fixes the lower lens in the standard glued lens; observe the cross center point generated by the standard glued lens and whether the cross cursor line appears on the display of the microscope 6, if the cross cursor line appears and coincides with the cross center point fixed on the display, the cross center point fixed on the display is the visual fixed reference point, if the cross cursor line is not displayed and does not coincide, adjust the precision displacement stage 62 of the centering device 1 and the zoom light tube assembly 50, so that the cross center point generated by the standard glued lens coincides with the visual fixed reference point, after adjustment, lock the precision displacement stage 62; then, start to calibrate the position of the concentric device 2 with the lens to be processed, put the glued lens to be centered into the loading position of the fixture seat 30, click the holding component 5 on the touch screen to move forward, and the holding component 5 holds and fixes the lower lens in the glued lens; then click the concentric device 2 on the touch screen to open The precision motion component 123 in the concentric device 2 moves the centering cover 90, and its force is adjusted by the height component 122 to press the centering cover 90 to the required position when the contact glued lens is in contact. At the same time, the detector obtains the actual gravity (pressure) value of the centering cover 90 pressing on the contact glued lens. The actual effect can meet the actual requirements according to the adjustment setting parameters. Finally, after the glued lens to be processed is put in, the start button is pressed, and the supporting component 5 will support and fix the lower lens in the glued lens to be processed. The concentric device 2 automatically descends, and the centering cover 90 is pressed down according to the adjustment setting parameters and slightly moves the upper lens. After the cross center point of the glued lens to be processed coincides with the visual reference point, the UV lamp is automatically turned on according to the setting of the touch screen. After the upper and lower lenses are UV-irradiated and fixed, the centering cover 90 rises, the supporting component 5 is retracted, and the processed glued lens is taken out. At this time, one cycle is completed, and then the glued lens to be processed is continued to be put in, and the automatic centering can be cyclically performed.

[0051] This mechanism can automatically center the glued lenses and automatically detect after positioning. Especially in the actual operation process, different products (glued lenses) are often replaced with different outer diameters and overlapping heights. Its advantages are more prominent, such as convenient operation, strong consistency, high repetition accuracy, high degree of automation, reduced labor costs, increased production efficiency, and guaranteed yield rate.

[0052] This mechanism realizes the automatic centering and positioning of the upper lens and the lower lens of the glued lens, and can more accurately control the gravity (pressure) applied between the upper lens and the lower lens, with more flexible operation, high repeatability and strong consistency. Especially when different products (glue lenses) are replaced and their outer diameters and overlapping heights are different, they can be adjusted according to the required height (thickness), which better reflects the convenience of simple machine adjustment operation, better realizes the automatic centering of the upper lens and the lower lens, has a high degree of automation, improves the gluing efficiency and has strong reliability.

[0053] Example 2

[0054] In this embodiment, the precision motion component can adopt a lead screw structure, and the lifting plate 82 is overlapped on the upper surface of the lead screw fixing block 86 of the lead screw structure, and other structures are consistent with those in Example 1.

[0055] Specifically, Figure 3 As shown, the precision motion component 123 in this embodiment is arranged on the right part of the centering side plate 83, and the precision motion component 123 includes a screw nut 130, and the screw nut 130 is arranged on the screw fixing block 86, and the screw fixing block 86 is sleeved on the guide rod 96 and the screw 85, one end of the guide rod 96 is fixed on the left fixed bracket 80, and the other end of the guide rod 96 is fixed on the right fixed bracket 99, and the left fixed bracket 80 and the right fixed bracket 99 are provided with bearings and fix the screw 85, one end of the screw 85 extends out through the coupling 101 and is connected to the motor 108, and the motor 108 is arranged on the motor fixing seat 102, and the motor fixing seat 102 is arranged on the centering side plate 83; the precision motion component 123 can respond faster to achieve fast and slow up and down movement and more accurate position positioning, and better cooperate with the up and down displacement position of the centering cover 90.

[0056] The above embodiments describe the present invention in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An automatic centering structure for a laminated lens, characterized in that: It includes a mounting platform, on which a centering device is installed; The centering device comprises a second precision displacement stage, which is mounted on a mounting platform, a zoom light-emitting tube assembly is mounted above the second precision displacement stage, and the second precision displacement stage can move the zoom light-emitting tube assembly in the front-back and / or left-right directions, a concentric device and a microscope are also mounted on the mounting platform, and a top holding assembly is mounted on the microscope; The concentric device comprises a centering base, a centering side plate is vertically fixedly installed on the upper part of the centering bottom plate, a centering mechanism and a precision motion component are arranged on the centering side plate, and the precision motion component can drive the centering mechanism to move up and down; the concentric device also comprises a height component, and the height component comprises a first differential cylinder and a first cylinder, the first differential cylinder is installed on the centering mechanism, the first cylinder is installed on the centering bottom plate, a detector is installed on the extended end of the first cylinder, when the centering mechanism moves downward, the measuring rod of the first differential cylinder can contact the detector, the detector can detect the pressure applied by the centering mechanism to the upper and lower lenses of the glued lens, and the first differential cylinder can adjust the pressure applied by the centering mechanism to the upper and lower lenses of the glued lens by adjusting the extended length of its measuring rod; The centering device detects the concentricity of the glued lens by cooperating with the concentric device and the microscope.

2. The automatic centering structure of a laminated lens according to claim 1, characterized in that: The concentric device also includes a side fixing block, one end of which is fixed to the protruding end of the first cylinder, and the other side is freely inserted into the centering base plate. The detector is mounted on the side fixing block and is located directly above the protruding end of the first cylinder. When the measuring rod of the first differential cylinder presses the detector downward, the protruding end of the first cylinder drives the side fixing block to move downward, and the side fixing block prevents the protruding end of the cylinder from rotating.

3. The automatic centering structure of a laminated lens according to claim 1, characterized in that: A lifting plate is fixedly mounted on the centering mechanism, and the lifting plate is mounted on the precision motion component. The precision motion component can prevent the centering mechanism from moving downward under the action of gravity through the lifting plate, and can drive the centering mechanism to move upward through the lifting plate.

4. The automatic centering structure of a laminated lens according to claim 1, characterized in that: The zoom light-emitting tube assembly includes a light source tube base, an inner slide tube is provided inside the light source tube base, the center of the inner slide tube is a through hole, a light source is provided inside the inner slide tube, a cross scale is provided on the top of the inner slide tube, and a focusing lens tube is provided on the top of the light source tube base. The light source can move up and down inside the light source tube base.

5. The automatic centering structure of a laminated lens according to claim 1, characterized in that: The microscope includes a microscope base, which extends forward to form a middle through-hole structure, and a fixture seat is arranged on the surface of the through-hole structure; the microscope base forms a bracket upward, and a lens barrel is arranged on the bracket, an objective lens is arranged below the lens barrel, an eyepiece is arranged above the lens barrel, and a CCD camera is arranged on the eyepiece. The lens barrel can move up and down to obtain image information of the concentricity of the lower lens and the upper lens on the loading position of the fixture seat presented in the microscope.

6. The automatic centering structure of a laminated lens according to claim 1, characterized in that: The centering mechanism includes a guide rail slider, which is fixedly installed on the centering side plate. A lifting fixed block is slidably installed on the guide rail slider. A centering fixed block is provided on the lifting fixed block. A horizontal plate is installed on the centering fixed block, and a centering cover is installed at the front end of the horizontal plate.

7. The automatic centering structure of a laminated lens according to claim 3, characterized in that: The precision motion component is a lead screw structure or a cylinder lifting structure.

8. The automatic centering structure of a laminated lens according to claim 1, characterized in that: The first precision displacement stage is fixedly mounted on the centering base, and the centering base plate is fixedly mounted on the upper surface of the first precision displacement stage.

9. The automatic centering structure of a laminated lens according to claim 6, characterized in that: At least one pair of baffles is provided on the front surface of the lifting and fixing block, the centering and fixing block is fixedly installed on the front surface of the lifting and fixing block, and the centering and fixing block is limited by the baffles.

10. The automatic centering structure of a laminated lens according to claim 1, characterized in that: A left fixed block is fixedly mounted on the top end of the centering side plate to limit the centering mechanism.

Images