Lens core adjusting machine capable of achieving multi-angle curing

Abstract

The utility model discloses a lens core adjusting machine capable of achieving multi-angle curing, and belongs to the technical field of optical lens core adjusting. The bottom of the core adjusting machine frame is connected with the chassis, the chassis is connected with the core adjusting pneumatic device, the core adjusting pneumatic device is connected with the core adjusting lifting plate, the core adjusting lifting plate is connected with the X / Y workbench, the X / Y workbench is connected with the lens core adjusting device, the autocollimator lens is connected with the supporting frame, and the supporting frame is connected with the left sliding way and the right sliding way. According to the utility model, the constraint of single-plane angle UV curing of the conventional core adjusting machine is broken through, and the problems that the space of a lens cone structure needing core adjusting is small, the structure shields light rays, and UV curing is not thorough are solved.

Description

Technical Field

[0001] The utility model relates to a lens core-adjusting machine capable of multi-angle curing, belonging to the technical field of optical lens core-adjusting. Background Art

[0002] In the current lens manufacturing, the requirements for the use environment and imaging of the lens are getting higher and higher. Therefore, the precision of lens assembly in the lens is also getting higher and higher. One of the factors that has a greater impact on the precision in lens assembly is the degree of lens eccentricity. If you want to minimize this eccentricity, you need to align two or more lenses.

[0003] When assembling the lens, a large eccentricity may lead to problems such as reduced image quality and reduced focusing range. Specifically, a large eccentricity will affect the center position of the lens, causing the imaging point to deviate from the theoretical focus, thereby reducing the image quality. In addition, too much eccentricity may also cause a change in focal length, reducing the focusing range, and thus causing a decline in lens performance.

[0004] Because the processing of lenses has limitations, it is impossible to ensure that the outer diameter of each lens is consistent. The inner diameter of the metal and injection-molded lens barrel and the lens cannot be completely consistent in different batches. In the actual assembly process of the lens, the degree of eccentricity of the different lenses in each lens is different. Therefore, in order to compensate for the eccentricity caused by the material itself and the assembly, it is necessary to adjust the lens in a targeted manner. Most of the lenses that are adjusted need to be fixed with UV glue after the adjustment. Whether the UV glue can be fully cured within a limited space plays a decisive role in the final adjustment result. At present, in order to meet market demand, the dimensions of many lenses are getting smaller and smaller. This also makes the space for adjustment less and less. The fixture that can control the curing of UV glue from multiple angles can solve the curing problem of some lenses with tricky glue dispensing positions. Utility Model Content

[0005] The utility model solves the technical problems existing in the prior art, thereby providing a lens core-adjusting machine capable of multi-angle curing.

[0006] The existing technical problems are solved by the following technical solutions: a lens core-adjusting machine capable of multi-angle curing, wherein the bottom of the core-adjusting machine frame is connected to the chassis, the chassis is connected to the core-adjusting pneumatic device, the core-adjusting pneumatic device is connected to the core-adjusting lifting plate, the core-adjusting lifting plate is connected to the X / Y workbench, the X / Y workbench is connected to the lens core-adjusting device, the autocollimator lens is connected to the support frame, the support frame is respectively connected to the left slide and the right slide, the left slide and the right slide are fixedly connected to the core-adjusting machine frame, the core-adjusting front bearing platform of the lens core-adjusting device is connected to the core-adjusting rear bearing platform, the lower part of the core-adjusting front bearing platform has 3 notches, and the core-adjusting gripper The inner cavity has three straight beams, the front centering support platform is connected to the centering gripper, the straight beam is inserted into the notch of the front centering support platform, the upper part of the cavity of the front centering support platform is connected to the L1 fixing ring, and the bottom of the cavity of the rear centering support platform is connected to the L9 fixing ring. The L9 fixing ring is an annular external thread structure, which cooperates with the internal M12 thread in the rear centering support platform to fix one of the lenses of the centering lens on the rear centering support platform. The front centering support platform has three inclined holes, and the UV curing guns are respectively inserted into the inclined holes of the front centering support platform. There are threaded holes above the inclined holes, and the UV curing guns are connected and fixed by screws to the threaded holes.

[0007] The straight beam of the center-aligning gripper forms an angle of 45° with the contact portion of the lens.

[0008] The advantages of the utility model: it breaks the constraints of the previous single-plane angle UV curing of the core-adjusting machine, and solves the problems of small space for the core-adjusting barrel structure, light blocking by the structure, and incomplete UV curing. By adjusting the three-dimensional angle and the position of the UV light, even small-structure lenses on the market can meet the needs of automated or semi-automated core-adjustment. Some products can only cure the UV glue at a single angle due to structural limitations, resulting in incomplete curing, and some even require a conveyor furnace for secondary curing. After adopting this structure, the secondary conveyor furnace curing can be cancelled, effectively reducing the defects and wasted working hours caused by secondary curing. Some products, due to complex structural factors, block the UV light, and ultimately cause poor UV curing. After adopting the modified fixture, the structural obstruction can be effectively avoided to reduce the occurrence of defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. As shown in the figure:

[0010] Figure 1 It is a partial structural schematic diagram of the utility model.

[0011] Figure 2This is a schematic diagram of the structure of the lens to be aligned.

[0012] Figure 3 It is a partial structural cross-sectional view of the utility model.

[0013] Figure 4 It is a schematic diagram of the C-section structure of the present utility model.

[0014] Figure 5 It is a schematic diagram of the core-adjusting grip structure of the utility model.

[0015] Figure 6 It is a schematic diagram of the side cross-section structure of the utility model.

[0016] Figure 7 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a lens centering machine capable of multi-angle curing, the bottom of the centering machine frame 7 is connected to the chassis 12, the chassis 12 is connected to the centering pneumatic device 10, the centering pneumatic device 10 is connected to the centering lifting plate 9, the centering lifting plate 9 is connected to the X / Y workbench 8, the X / Y workbench 8 is connected to the lens centering device 1, the autocollimator lens 11 is connected to the support frame 13, the support frame 13 is respectively connected to the left slide 14 and the right slide 15, the left slide 14 and the right slide 15 are fixedly connected to the centering machine frame 7.

[0019] The front alignment platform 6 of the lens alignment device 1 is connected to the rear alignment platform 3. The lower part of the front alignment platform 6 has three notches. The inner cavity of the alignment gripper 2 has three straight beams 17. The front alignment platform 6 is connected to the alignment gripper 2, that is, the straight beams 17 are inserted into the notches of the front alignment platform 6.

[0020] The centering gripper 2 has three straight beams 17, which control the direction of the lens. The hollow structure in the middle of the ring of the centering gripper 2 extends through the three straight beams 17 to cooperate with the chamfered edge of the lens barrel to be adjusted, and applies force in the horizontal and vertical directions to push the centering lens barrel, so that the center of the centering lens barrel coincides with the optical axis, thereby achieving the purpose of centering.

[0021] The upper part of the cavity of the front-aligning support platform 6 is connected to the L1 fixing ring 5, and the bottom of the cavity of the rear-aligning support platform 3 is connected to the L9 fixing ring 6. The L9 fixing ring is an annular external thread structure, which cooperates with the internal M12 thread in the rear-aligning support platform 3 to fix one of the lenses of the alignment lens on the rear-aligning support platform 3.

[0022] The front-aligning carrier 6 has three oblique holes, and the UV curing guns 4 are respectively inserted into the oblique holes of the front-aligning carrier 6. There are threaded holes above the oblique holes, and the UV curing guns 4 are fixed by connecting the threaded holes with screws.

[0023] One end of the UV curing gun 4 is connected to a UV light source (different brands and models of UV light sources have different corresponding interfaces).

[0024] The straight beam 17 of the alignment gripper 2 is at a 45° angle to the contact part of the lens or lens barrel, because when the force surface is 45°, the angle between the direction of the resultant force and the direction of motion is 45°, its magnitude is F, and the mass of the object is m. According to vector decomposition, the resultant force can be decomposed into horizontal and vertical components:

[0025] F_h=F*cos(45°);

[0026] F_v=F*sin(45°).

[0027] Among them, F_h and F_v are the horizontal and vertical components of the force on the object respectively. The mass m of the equipment is known. At this time, when aligning, the centering can be performed by applying a force greater than Fv in the horizontal direction, so that the horizontal and numerical forces on the lens / lens barrel to be adjusted can be more balanced. The horizontal direction is adjusted manually with the help of the X / Y workbench 8. The vertical direction is adjusted by the pneumatic device 10 to rise and fall, and the descent and pressure stages are controlled by the deadweight of the centering machine lifting plate 9.

[0028] The lens alignment device 1 plays a role in fixing one of the lens groups and the UV curing gun 4. The fixing of the group mainly relies on another part, the front group (an assembly unit in the front of the lens) auxiliary fixing ring 5. Through the internal thread of the auxiliary fixing ring 5 and the external thread of the alignment device 1, a group of lenses in the front group of the lens is fixed on the alignment device 1.

[0029] The UV curing gun is fixed at multiple angles by processing multi-angle holes (different angles can be adjusted according to different needs) on the core adjustment device 1. Minimizing the sliding fit amount (H7 / g6) of the front and rear bearing platforms 3 can make the core adjustment more accurate. H7 / g6 is a very precise basic hole system clearance fit. "H" represents the lower deviation of the hole, "7" is the tolerance grade of the hole, which is very close to the basic size; "g" represents the upper deviation of the shaft, and "6" represents the tolerance grade of the shaft, which is slightly smaller than the basic size. Since the size of the hole is slightly larger than the basic size and the size of the shaft is slightly smaller than the basic size, the two form a clearance fit. The matching relationship H7 is the hole, and g6 is the requirement for the shaft. This is a basic hole system clearance fit, specifically a sliding fit with very small clearance. It is used when free rotation is not desired but free movement and sliding are allowed and precise positioning is required. It can also be used for clear positioning fit.

[0030] The upper portion contains threads for use with the L1 auxiliary retaining ring to secure the front group of the core-aligning lens.

[0031] The large-diameter countersunk hole is processed outside the thread, and there is a circular groove outside the thread. The depth is greater than the height of the thread. When subjected to external force, it will bear the external force more than the lens fixed by the thread, so it can protect the lens and prevent scratches on the lens.

[0032] The outer diameter is processed from three different planes, and three cutting planes are added to the outer diameter side of the core alignment device 1. Drilling on this plane will make positioning more accurate.

[0033] The three straight beams are in contact with the lens to be adjusted and are connected to the core adjustment lifting plate to play a supporting role.

[0034] Example 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a lens alignment machine capable of multi-angle curing includes a rear bearing platform 3 for bearing a table-shaped structure, and an L9 fixing ring 6 for fixing one of the lenses. The L9 fixing ring is an annular external thread structure, which cooperates with the M12 threaded hole in the rear bearing platform 3 to fix one of the lenses of the alignment lens on the rear bearing platform.

[0035] It includes an alignment gripper 2 for controlling the direction of the lens, a hollow structure in the middle of the ring, and three claws extending to the middle to cooperate with the chamfered edge of the lens barrel to be adjusted, respectively applying force in the horizontal and vertical directions to push the alignment lens barrel, so that the center of the alignment lens barrel coincides with the optical axis, thereby achieving the purpose of alignment. The horizontal force needs to be adjusted manually with the help of the X / Y workbench 8. The vertical force requires the pneumatic device 10 of the alignment machine to rise in the rising stage, and the descending and pressure stages need to be controlled by the deadweight of the lifting plate 9 of the alignment machine.

[0036] In addition, a front support platform is included, which mainly plays a role in fixing one of the lens groups and the UV curing gun 4. A group of lenses in the front part of the lens are fixed on the front support platform through the internal thread and the front support platform. The UV curing gun is fixed at multiple angles through multi-angle holes processed on the front support platform. Minimizing the sliding fit amount (H7 / g6) between the front support platform and the rear support platform 3 as much as possible can make the core adjustment more precise. It is best when the core adjustment gripper 2 is at a 45° angle to the contact part of the lens / lens barrel, so that the horizontal and numerical forces on the lens / lens barrel to be adjusted are more balanced.

[0037] The front and rear platforms of the fixture, including two fixing rings, are made of A6061 aluminum alloy with good machinability, and are treated with black electro-anodized matte treatment to reduce the influence of stray light. The upper part contains M24 threads, which are used to fix the front group of the core-adjusting lens with the L1 auxiliary fixing ring. Large-diameter countersunk holes are processed outside the threads to prevent scratches on the lens. The outer diameter is processed with fixing holes from 3 different planes. The entire platform is made of A6061 aluminum alloy and treated with black electro-anodized matte treatment.

[0038] The structure adopts the EDM wire cutting process to process the internal hollow structure, leaving only 3 straight beams in contact with the lens to be adjusted, and at the same time connected to the core adjustment lifting plate to play a supporting role. The core adjustment grip structure is made of SUS304 stainless steel for processing.

[0039] The upper part uses a CNC milling machine to wash out the bearing groove that is consistent with the shape of the lens barrel to be adjusted. The internal lathe processes the step hole, which is matched with the L9 fixing ring thread to assemble the core adjustment auxiliary lens. The rear bearing platform is made of A6061 aluminum alloy and black electro-anodized matte treatment.

[0040] The centering machine adopts the existing general technology, and plays a fixing role by connecting the outer frame of the reticle to the rear bearing platform. The X / Y workbench on the lifting plate is connected to the centering gripper to align the lens barrel to be adjusted. It includes a pneumatic device to control the lifting plate to realize the loading and unloading of the lens barrel. It includes a stepper motor structure, and its own light source and reticle are raised and lowered. It includes an autocollimation lens and a shooting camera to collect the reticle image. It includes a computer and system software to analyze and calculate the collected image.

[0041] In the embodiment provided by the present utility model, the transmission mode of the driving device and the pneumatic device and the computing system after the imaging acquisition are arranged according to the existing technology and will not be described in detail here.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lens alignment machine capable of multi-angle curing, characterized in that: The bottom of the core aligning machine frame is connected to the chassis, the chassis is connected to the core aligning pneumatic device, the core aligning pneumatic device is connected to the core aligning lifting plate, the core aligning lifting plate is connected to the X / Y workbench, the X / Y workbench is connected to the lens core aligning device, the autocollimator lens is connected to the support frame, the support frame is respectively connected to the left slide and the right slide, the left slide and the right slide are fixedly connected to the core aligning machine frame, The front centering platform of the lens centering device is connected to the rear centering platform. The lower part of the front centering platform has three notches. The inner cavity of the centering gripper has three straight beams. The front centering platform is connected to the centering gripper. The straight beams are inserted into the notches of the front centering platform. The upper part of the cavity of the front bearing platform is connected to the L1 fixing ring, and the bottom of the cavity of the rear bearing platform is connected to the L9 fixing ring. The L9 fixing ring is a ring-shaped external thread structure, which cooperates with the internal M12 thread in the rear bearing platform to fix one of the lenses of the core adjustment lens on the rear bearing platform. The front bearing platform for core alignment has three inclined holes, and the UV curing guns are respectively inserted into the inclined holes of the front bearing platform for core alignment. There are threaded holes above the inclined holes, and the UV curing guns are connected and fixed by screws connecting the threaded holes.

2. The lens alignment machine capable of multi-angle curing according to claim 1, characterized in that: The straight beam of the center-aligning gripper forms an angle of 45° with the contact portion of the lens.

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