Lens dismounting device for optical lens and use method of lens dismounting device
By designing a lens removal device for optical lenses, the device expands the gap between the lens barrel and the lens through slight elastic deformation, solving the problem of lens removal difficulties, realizing lossless disassembly and semi-automated operations, reducing the risk of lens breakage.
Patent Information
- Application Number
- CN202411850890.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-02-25
AI Technical Summary
The sliding fit between the lens and the lens barrel in an optical lens makes it difficult to disassemble the lens, and the existing disassembly method is prone to damage the lens and the lens barrel.
By designing a lens disassembly device, the lens barrel undergoes slight elastic deformation, expands the installation gap between the lens barrel and the lens, and uses the mechanical transmission form of the "umbrella" and the control degree of freedom to achieve lossless disassembly of the lens.
The lossless disassembly of the lens is achieved, the risk of lens breakage is reduced, the cost of error is reduced, the project cycle is ensured, semi-automated operation is available, the structure is durable, and it does not rely on operation proficiency.
Smart Images
Figure CN119511489A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of optical lenses, and in particular relates to a lens disassembly device for an optical lens and a use method thereof. Background Art
[0002] When designing an optical lens, due to the curvature of the lens, the coaxiality requirements of the lens barrel and the lens after installation are relatively high. Therefore, during the production process of the lens barrel and the lens, the requirements for cylindricity and coaxiality are simultaneously increased. There are four main reasons for the difficulty in disassembling and assembling the lens. The first is the problem of processing accuracy. Machined products generally have accuracy errors. Optical lenses are a combination of metal products and glass products. The processing technology of the lens barrel is relatively simple and the accuracy is easy to control. The processing technology of the lens is complex, with more processing processes and it is not easy to control the accuracy. According to the existing debugging experience, the larger the lens size, the more difficult it is to ensure the accuracy. The second is that the air in the lens barrel cavity is compressed during the assembly of the lens barrel and the lens, generating resistance. On the contrary, during the disassembly process, the pressure difference between the inside and the outside causes the lens to not slide out naturally. You can set The exhaust hole solves this kind of problem, but the disadvantage is that it may contaminate the lens; third, material deformation. During the debugging process, whether it is temperature changes or accidental external forces, the cylindrical accuracy of the lens barrel will be destroyed, causing the lens to be squeezed and difficult to remove; fourth, the lens barrel and the lens are not absolutely round, but can be compared to two ellipses. When assembling, the long axes of the two ellipses must be aligned to smoothly install them. In actual operation, the lens needs to be rotated and adjusted to complete the assembly. However, the lens is fixed in the axial direction by spinning, with a threaded pressing ring, non-metallic gasket, and the lens rotates relative to each other during the spinning process. This process will cause a certain angle between the long axis of the lens and the long axis of the lens barrel, resulting in the lens being squeezed radially by the lens barrel, so there is resistance when removing the lens. The above four points can be understood as the gap between the lens barrel and the lens is too small, which makes it difficult to remove the lens. The existing disassembly methods will more or less damage the specifications and integrity of the lens barrel, and rely on experience.
[0003] At present, lens disassembly includes the knocking vibration method, the suction cup method and the heating method, but there are many problems. The knocking vibration method uses a leather hammer or other non-metallic material to knock the outer wall of the lens barrel, transmit vibration and produce deformation to make the lens loose and slide off. In this process, the deformation of the lens barrel squeezes the edge of the lens, resulting in different degrees of breakage of the lens. If the broken edge of the lens is too large and affects the aperture, the lens will be scrapped; the suction cup method uses a suction cup to absorb the spherical surface of the lens to provide axial tension. The disadvantage of this method is that the suction force is too small and the effect is poor, and the suction force is too large to easily damage the lens coating layer, and the suction cup position is easy to contaminate the film layer, affecting the light transmittance of the lens; the heating method uses a heating plate to heat the lens barrel, and uses the difference in thermal expansion coefficients between metal and glass to make the lens slide off. During the heating process, the temperature and time will affect the properties of the metal material (refer to the principle of heat treatment), and baking the lens will damage the film layer, and the volatiles generated by heating will adhere to the lens, affecting the optical parameters of the lens. Summary of the invention
[0004] In order to meet the design requirements of the divergence angle of the beam expander of the laser equipment, the distance between the lenses in the lens needs to be adjusted during the optical debugging process. Therefore, the lenses need to be disassembled and the distance needs to be adjusted by adding gaskets. However, due to the sliding fit accuracy between the lenses and the lens barrel and material deformation, the lenses may get stuck. The existing disassembly methods will more or less damage the lenses and the lens barrel. Based on this, the present invention provides a lens disassembly device for an optical lens and a method of using the same. The device causes a slight elastic deformation of the lens barrel to expand the installation gap between the lens barrel and the lens, thereby achieving the purpose of non-destructive disassembly of the lens.
[0005] The present invention achieves this object through the following technical solutions:
[0006] A lens disassembly device for an optical lens comprises a lens supporting portion, an expansion pressure block is arranged below the lens supporting portion, the expansion pressure block is connected to a lifting rod, the lifting rod is provided with a trapezoidal screw, a vibration guide seat is arranged directly below the expansion pressure block, a straight support rod is arranged circumferentially on the vibration guide seat, one end of the straight support rod is movably connected to the vibration guide seat, and the other end is provided with a support block, the support block is used to support the inner wall of the lens barrel, the straight support rod is linked to the expansion pressure block through an oblique support rod, one end of the oblique support rod is movably connected to the expansion pressure block, and the other end is movably connected to the straight support rod, the expansion pressure block is arranged on the lifting rod During the raising and lowering process of the lowering rod, the straight support rod is driven to move inward and outward. The vibration guide seat is installed in the through hole of the top plate of the cover shell base. The vibration guide seat is respectively provided with limiting structures above and below the top plate. The slider of the trapezoidal lead screw is arranged in the axial through hole of the vibration guide seat and passes through the slot on the vibration guide seat and is fixedly connected to the top plate of the cover shell base. The lifting rod is connected to the lifting control assembly through the transmission gear assembly. One end of the lifting rod is sleeved with the driven gear of the transmission gear assembly and can slide up and down. The lifting control assembly is connected to the transmission gear of the transmission gear assembly.
[0007] Furthermore, a vibrator is provided under the vibration guide seat, and the vibrator is provided with a shell, and the shell is fixed to the top plate of the cover base, a sliding sleeve is provided inside the shell, the lifting rod passes through the through hole of the sliding sleeve, and a spring is provided between the sliding sleeve and the shell, the top end of the spring abuts against the outward convex edge of the top of the sliding sleeve, and the bottom end of the spring abuts against the inward convex edge of the bottom of the shell, the top of the sliding sleeve abuts against the bottom of the vibration guide seat, and a shift block is provided at the bottom of the sliding sleeve, and the shift block is located between the gear teeth of the dial wheel, and the dial wheel is connected to the rotation control assembly.
[0008] Furthermore, the lifting control assembly and the rotation control assembly are both seat bearings, which are respectively fixedly mounted on the side plates of the cover base, and the seat bearings are equipped with a torque wrench.
[0009] Furthermore, the distance between the limiting mechanisms on the upper and lower parts of the top plate of the vibration guide seat is slightly greater than the thickness of the top plate of the cover shell base, and the sliding displacement of the top plate of the cover shell base between the upper and lower limiting mechanisms does not exceed 0.5 mm.
[0010] Furthermore, the housing is provided with a limiting groove, and the limiting groove cooperates with a limiting mechanism on the sliding sleeve to prevent the sliding sleeve from rotating.
[0011] Furthermore, the lens supporting portion adopts a rubber pad.
[0012] Furthermore, the support block is provided with a TPU protective pad.
[0013] Furthermore, the contact surface between the shift block and the pull wheel teeth is an inclined surface, and the impeller teeth opposite to the shift block inclined surface are arc-shaped.
[0014] Furthermore, a limiting plate is provided at the bottom of the support block for supporting the lens barrel.
[0015] The present invention also provides a method for using the above-mentioned lens disassembly device for an optical lens, comprising the following steps:
[0016] Step 1, adjusting the lifting and lowering of the lifting rod through the lifting control assembly, adjusting the opening and closing size of the support block according to the size of the lens, and placing the lens barrel on the limit plate of the support block;
[0017] Step 2, by fine-tuning the lifting control assembly, the support block is expanded to reach a torque that causes slight deformation of the lens material, and the trapezoidal lead screw slider locks the position of the lifting rod at this time;
[0018] Step 3, applying downward force to the spring of the vibrator through the rotation control component, the spring rebounds and vibrates the vibration guide seat, and the support block vibrates the lens through conduction, vibrating the lens to the lens supporting part, completing the lens removal.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] The present invention combines the mechanical transmission form of "holding an umbrella" with the method of controlling the degree of freedom to form a vibration expansion structure that allows the circular structure to move slightly outward, and performs expansion vibration from the inner wall of the lens barrel. Stress concentration is avoided by multiple support blocks, the gap between the inner wall of the lens barrel and the lens is enlarged, and the lens is slightly moved by vibration, so that the major and minor axes of the lens barrel and the lens coincide and slide naturally. The lens disassembly device for an optical lens provided by the present invention has good economy, reduces the risk of lens breakage, reduces error costs and ensures project cycle; semi-automatic operation does not rely on operator proficiency; the structure has high durability, and even if the free space at the connection increases, it will not affect the use; the force direction of the lens barrel structure is reasonable and uniform, and no damage is caused to the lens and the lens barrel; the operation is convenient, and the lens can be used immediately whether in the laboratory or in field maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0022] Figure 1 This is an appearance diagram of an embodiment of the present invention;
[0023] Figure 2 This is an internal structure diagram of an embodiment of the present invention;
[0024] Figure 3 for Figure 1 Longitudinal section at midline position;
[0025] Figure 4 for Figure 1 Partial transverse section at midline position;
[0026] Figure 5 This is a schematic diagram of the structure of a vibration guide seat according to an embodiment of the present invention;
[0027] Figure 6 This is a schematic diagram of the structure of a vibrator according to an embodiment of the present invention;
[0028] Figure 7 The figure is a schematic diagram of the structure of the driven bevel gear according to an embodiment of the present invention.
[0029] Reference numerals in the figure: 1-rubber pad, 2-expansion pressure block, 3-lifting rod, 4-trapezoidal screw slider, 5-vibration guide seat, 6-straight support rod, 7-oblique support rod, 8-support block, 9-vibrator, 10-driven bevel gear, 11-transmission bevel gear, 12-cover base, 13-push wheel, 14-seat bearing, 15-torque wrench, 16-lens, 501-limiting convex edge, 502-limiting block, 503-slot, 801-limiting plate, 802-TPU protective pad, 901-housing, 902-sleeve, 903-spring, 904-push block. DETAILED DESCRIPTION
[0030] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to be able to fully convey the scope of the present invention to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
[0031] See also Figures 1 to 7The present invention discloses an embodiment of a lens disassembly device for an optical lens, comprising a rubber pad 1 for supporting a lens 16, an expansion pressure block 2 is arranged below the rubber pad 1, the expansion pressure block 2 is connected to a lifting rod 3, a trapezoidal screw is arranged on the lifting rod 3, a vibration guide seat 5 is arranged directly below the expansion pressure block 2, and a straight support rod 6 is arranged circumferentially on the vibration guide seat 5, one end of the straight support rod 6 is movably connected to the vibration guide seat 5, and the other end is provided with a support block 8, the support block 8 is used to support the inner wall of the lens barrel, a limit plate 801 is arranged at the bottom of the support block 8 for supporting the lens barrel, and a TPU protective pad 802 is also arranged on the support block 8.
[0032] The straight support rod 6 is linked to the expansion pressure block 2 through the oblique support rod 7. One end of the oblique support rod 7 is movably connected to the expansion pressure block 2, and the other end is movably connected to the upper middle part of the straight support rod 6. The expansion pressure block 2 drives the straight support rod 6 to move inward and outward during the rising and falling process of the lifting rod. The vibration guide seat 5 is installed in the through hole of the top plate of the cover shell base 12. The vibration guide seat 5 is respectively provided with a limiting convex edge 501 and a limiting block 502 on the upper and lower parts of the top plate. The distance between the limiting convex edge 501 and the limiting block 502 on the vibration guide seat 5 is slightly larger than the thickness of the top plate of the cover shell base 12, so that the gap between the limiting convex edge 501, the limiting block 502 and the top plate of the cover shell base 12 does not exceed 0.5mm. The trapezoidal lead screw slider 4 is arranged in the axial through hole of the vibration guide seat 5 and passes through the slot 503 on the vibration guide seat 5 to be fixedly connected to the top plate of the cover base 12. The end of the lifting rod 3 is sleeved with the driven bevel gear 10 of the transmission gear assembly. The driven bevel gear 10 is provided with a slot. The driven bevel gear 10 is fixedly connected to the cover base 12. The transmission bevel gear 11 is connected to the seat bearing 14, and the seat bearing 14 is installed on the side plate of the cover base 12.
[0033] A vibrator 9 is provided below the vibration guide seat 5. The vibrator 9 is provided with a shell 901. The shell 901 is fixed to the top plate of the housing base 12. A sleeve 902 is provided inside the shell 901. The lifting rod 3 passes through the through hole of the sleeve 902. A spring 903 is provided between the sleeve 902 and the housing 901. The top of the spring 903 abuts against the outward convex edge of the top of the sleeve 902. The bottom of the spring 903 abuts against the inward convex edge of the bottom of the housing 901. The top of the sleeve 902 abuts against the bottom of the vibration guide seat 5. The housing 901 is provided with a limiting groove. The limiting groove cooperates with the limiting mechanism on the sleeve 902 to prevent the sleeve 902 from rotating. Two shifting blocks 904 are provided at the bottom of the sleeve 902. The shifting blocks 904 are located between the gear teeth of the thumbwheel 13. The thumbwheel 13 is connected to another seat bearing 14 installed on the side plate of the housing base 12. The seat bearing 14 is equipped with a torque wrench 15. The contact surface between the shift block 904 and the gear teeth of the pull wheel 13 is an inclined surface, and the gear teeth of the impeller 13 relative to the inclined surface of the shift block 904 are arc-shaped.
[0034] The specific steps of using the lens removal device are as follows:
[0035] Step 1: Use a torque wrench 15 to insert the seat bearing 14 connected to the transmission bevel gear 11 into the socket outside the side panel, adjust the opening and closing size of the support block 8 according to the size of the lens (the adjustable range of the device is between φ60 and φ110), and buckle the optical lens onto the 6 support blocks 8.
[0036] Step 2: The maximum torque value of the torque wrench 15 is set to the minimum torque value that causes elastic deformation of the lens material to prevent the operator from damaging the lens barrel during use. Continue to expand and twist. At this time, the torque is transmitted to the trapezoidal screw through the bevel gear. The trapezoidal screw slider 4 is fixed to the top plate of the cover base 12, so that the expansion pressure block 2 moves downward, thereby driving the diagonal support rod 7 to unfold, and pushing the straight support rod 6 to transmit the torque to the inner wall of the lens barrel through the 6 support blocks 8. The support block 8 and the lens barrel are separated by the TPU protection pad 802. The TPU protection pad 802 is compressed to protect the inner wall thread of the lens barrel and provide a buffer for subsequent vibrations. Screw until the torque wrench 15 slips off. At this time, the lens barrel is completely fixed and produces a slight elastic deformation.
[0037] Step 3: Insert the torque wrench 15 into the connecting jack of another bearing 14 with a seat connected to the dial wheel 13, and twist it to drive the dial wheel 13 to rotate. The dial wheel 13 presses down the dial block 904 of the vibrator 9, and at the same time compresses the spring 903 in the vibrator 9 to store energy. The shell 901 of the vibrator 9 is fixed to the top plate of the cover base 12. When the dial wheel 13 rotates 40°, the pressing block loses the downward pressure, and the spring 903 rebounds to release the pressure to impact the vibration guide seat 5. The vibration guide seat 5 slides with the top plate of the cover base 12, and the sliding distance is limited to 0.5mm by the limiting structure on the vibration guide seat 5; when the vibration guide seat 5 is impacted, since the relative position of the trapezoidal screw slider 4 and the expansion slider 2 has been fixed in step 2, Figure 3 From the force relationship shown, it can be known that the vibration guide seat 5 transmits the impact of the spring 903 to the support block 8 through the straight support rod 6, and combined with the buffering effect of the TPU pad 802, the impact effect on the inner wall of the lens barrel is achieved. The dial wheel 13 has 9 teeth distributed on the circumference, that is, it rotates one circle and moves the vibrator 8 to 9 times, thereby achieving the effect of low-frequency vibration; the lens 16 slides off the lens barrel and falls on the rubber pad 1, and the lens barrel is removed, and the operation is completed.
[0038] The lifting control component and the rotation control component in the present invention can also be controlled by a motor, and automatic control can be achieved by equipping them with sensors and control plug-ins.
[0039] The present invention has been described in detail above through embodiments, but the contents described are only exemplary embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. The protection scope of the present invention is defined by the claims. Anyone who utilizes the technical solution described in the present invention, or a technician in the field, inspired by the technical solution of the present invention, designs a similar technical solution within the essence and protection scope of the present invention to achieve the above technical effects, or makes equal changes and improvements to the scope of application, shall still belong to the scope of protection covered by the patent of the present invention. It should be noted that in order to make a clear statement, the description of some components and processes that have no direct and obvious connection with the scope of protection of the present invention but are known to those skilled in the art are omitted in the description of the present invention.
[0040] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0041] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
Claims
1. A lens disassembly device for an optical lens, characterized in that: It includes a lens supporting portion, an expansion pressure block is provided below the lens supporting portion, the expansion pressure block is connected to a lifting rod, the lifting rod is provided with a trapezoidal screw, a vibration guide seat is provided directly below the expansion pressure block, a straight support rod is provided circumferentially of the vibration guide seat, one end of the straight support rod is movably connected to the vibration guide seat, and the other end is provided with a support block, the support block is used to support the inner wall of the lens barrel, the straight support rod is linked to the expansion pressure block through an oblique support rod, one end of the oblique support rod is movably connected to the expansion pressure block, and the other end is movably connected to the straight support rod, and the expansion pressure block is in the process of rising and falling of the lifting rod. The straight support rod is driven to move inward and outward, the vibration guide seat is installed in the through hole of the top plate of the cover shell base, and the vibration guide seat is respectively provided with limiting structures above and below the top plate, the slider of the trapezoidal lead screw is arranged in the axial through hole of the vibration guide seat and passes through the slot on the vibration guide seat and is fixedly connected to the top plate of the cover shell base, the lifting rod is connected to the lifting control assembly through the transmission gear assembly, one end of the lifting rod is sleeved with the driven gear of the transmission gear assembly and can slide up and down, and the lifting control assembly is connected to the transmission gear of the transmission gear assembly.
2. A lens disassembly device for an optical lens according to claim 1, characterized in that: A vibrator is provided under the vibration guide seat, and the vibrator is provided with a shell, and the shell is fixed to the top plate of the cover base, a sliding sleeve is provided inside the shell, the lifting rod passes through the through hole of the sliding sleeve, a spring is provided between the sliding sleeve and the shell, the top end of the spring abuts against the outward convex edge of the top of the sliding sleeve, the bottom end of the spring abuts against the inward convex edge of the bottom of the shell, the top of the sliding sleeve abuts against the bottom of the vibration guide seat, and a shift block is provided at the bottom of the sliding sleeve, the shift block is located between the gear teeth of the dial wheel, and the dial wheel is connected to the rotation control component.
3. A lens disassembly device for an optical lens according to claim 2, characterized in that: The lifting control assembly and the rotation control assembly are both seat bearings, which are respectively fixedly mounted on the side plates of the cover base, and the seat bearings are equipped with torque wrenches.
4. The lens disassembly device for an optical lens according to claim 2, characterized in that: The distance between the limiting mechanisms on the upper and lower parts of the vibration guide seat is slightly greater than the thickness of the top plate of the cover shell base, and the sliding displacement of the top plate of the cover shell base between the limiting mechanisms on the upper and lower parts does not exceed 0.5 mm.
5. The lens disassembly device for an optical lens according to claim 2, characterized in that: The housing is provided with a limiting groove, and the limiting groove cooperates with a limiting mechanism on the sliding sleeve to prevent the sliding sleeve from rotating.
6. The lens disassembly device for an optical lens according to claim 1, characterized in that: The lens supporting portion adopts a rubber pad.
7. The lens disassembly device for an optical lens according to claim 1, characterized in that: The support block is provided with a TPU protection pad.
8. The lens disassembly device for an optical lens according to claim 1, characterized in that: The contact surface between the shift block and the pull wheel teeth is an inclined surface, and the impeller teeth opposite to the shift block inclined surface are arc-shaped.
9. The lens disassembly device for an optical lens according to claim 4, characterized in that: A limiting plate is provided at the bottom of the support block for supporting the lens barrel.
10. A method for using the lens disassembly device for an optical lens as claimed in claim 9, characterized in that: The following steps are involved: Step 1, adjusting the lifting and lowering of the lifting rod through the lifting control assembly, adjusting the opening and closing size of the support block according to the size of the lens, and placing the lens barrel on the limit plate of the support block; Step 2, by fine-tuning the lifting control assembly, the support block is expanded to reach a torque that causes slight deformation of the lens material, and the trapezoidal lead screw slider locks the position of the lifting rod at this time; Step 3, applying downward force to the spring of the vibrator through the rotation control component, the spring rebounds and vibrates the vibration guide seat, and the support block vibrates the lens through conduction, vibrating the lens to the lens supporting part, completing the lens removal.