Lens mounting structure

Abstract

The utility model provides a lens mounting structure, and relates to the technical field of laser processing equipment, and the mounting structure comprises a mounting seat which comprises a cavity for mounting a lens; the elastic pressing ring comprises an annular body and an elastic metal ring arranged below the annular body, and a gap used for deformation of the elastic metal ring under pressure is formed between the elastic metal ring and the annular body; the elastic pressing ring is used for being pressed on the lens installed in the cavity. The sealing ring is arranged in the cavity and is used for limiting the elastic pressing ring in the mounting seat; the lubricating sheets are arranged on the two sides of the mounting seat; or the lubricating piece is arranged on one side of the mounting seat and on the surface, far away from the lens, of the elastic pressing ring, has elasticity and protrudes out of the surface of the mounting seat and / or the elastic pressing ring. The problems that in the prior art, a screw or a thread locking structure is used for fixing the lens, metal chippings are prone to being taken out, and installation is complex are solved.

Description

Technical Field

[0001] This application relates to the technical field of laser processing equipment, and in particular to a lens mounting structure. Background Technology

[0002] Lasers are playing an increasingly important role in various fields, such as laser cutting and laser welding. The laser head, as a crucial component of laser cutting machine tools, directly affects the cutting quality of sheet metal. High-power laser cutting head protective lenses can prevent debris from splashing during laser cutting, avoiding damage to the internal lenses. They can also be placed at the top inside the cutting head to prevent dust from being introduced into the cutting head during laser fiber head installation and causing contamination. Currently, these protective lenses are relatively thick and use threaded locking mechanisms, making them prone to dust accumulation, difficult to replace, and requiring specialized tools for disassembly. Utility Model Content

[0003] The purpose of this application is to provide a lens mounting structure that uses an elastic metal ring that can deform under pressure and a sealing ring that is interference-fitted with the cavity of the mounting base to press the lens, thereby improving the problems of metal fragments and complicated removal and installation caused by using screw or threaded locking structures to fix lenses in the prior art.

[0004] To achieve the above-mentioned technical objectives, this application provides a lens mounting structure, comprising: a lens mounting structure comprising:

[0005] Mounting base, including a cavity for mounting the lens;

[0006] An elastic pressure ring includes an annular body and an elastic metal ring disposed below the annular body, wherein there is a gap between the elastic metal ring and the annular body for the elastic metal ring to deform under pressure; the elastic pressure ring is used to press against a lens installed in the cavity;

[0007] A sealing ring, disposed within the cavity, is used to confine the elastic pressure ring within the mounting base; and

[0008] A lubricating pad is disposed on both sides of the mounting base; or disposed on one side of the mounting base and on the surface of the elastic pressure ring away from the lens, the lubricating pad being elastic and protruding from the surface of the mounting base and / or the elastic pressure ring.

[0009] Furthermore, in some embodiments of this application, the elastic metal ring and the annular body are connected as one unit by at least two connecting blocks, and the at least two connecting blocks are arranged in a ring array along the center of the elastic metal ring.

[0010] Furthermore, in some embodiments of this application, at least two pressure blocks arranged in a circular array along the center of the elastic metal ring are provided on the side of the elastic metal ring away from the annular body, and the pressure blocks are connected to the elastic metal ring as a whole.

[0011] Furthermore, in some embodiments of this application, the cavity extends through the mounting base; a first annular step for mounting the lens is provided on the side wall surrounding the cavity;

[0012] The elastic metal ring is positioned corresponding to the first annular step.

[0013] Furthermore, in some embodiments of this application, a second annular step for installing the elastic pressure ring is also provided on the side wall surrounding the cavity;

[0014] The inner diameter of the first annular step is smaller than the inner diameter of the second annular step.

[0015] Furthermore, in some embodiments of this application, the vertical distance from the first annular step to the second annular step is less than the sum of the height of the elastic metal ring and the thickness of the lens.

[0016] Furthermore, in some embodiments of this application, an annular groove is provided on the outer surface of the annular body; the sealing ring is embedded in the annular groove and is interference-fitted with the annular groove;

[0017] The difference between the outer and inner diameters of the sealing ring is greater than the depth of the annular groove and greater than the distance between the bottom surface of the annular groove and the inner surface of the cavity.

[0018] The depth of the annular groove is 0.5–1.5 mm; and / or

[0019] The difference between the outer and inner diameters of the sealing ring and the difference between the depth of the annular groove is 0.2 to 0.3 mm.

[0020] Furthermore, in some embodiments of this application, the elastic pressure ring is any one of an aluminum ring, a copper ring, an aluminum alloy ring, or a copper alloy ring.

[0021] Furthermore, in some embodiments of this application, an annular groove is provided on both the upper and lower sides of the mounting base, and the annular groove is used to provide a lubricating sheet, the thickness of the lubricating sheet being greater than the depth of the annular groove.

[0022] Furthermore, in some embodiments of this application, an annular groove is provided on the surface of the annular body away from the lens, and an annular groove is also provided on the surface of the mounting base away from the surface of the body where the first annular groove is provided; each annular groove is used to provide a lubricating sheet, and the thickness of the lubricating sheet is greater than the depth of the annular groove.

[0023] This application provides a lens mounting structure. An elastic metal ring that deforms under pressure and a sealing ring that interferes with the cavity of the mounting base press the lens together. This improves upon the problems of existing technologies using screws or threaded locking structures to fix lenses, which easily lead to metal debris and are complex to remove and install. Lenses can be installed and removed without the need for other tools. It achieves lens installation and removal without threads or bolts, and absorbs thermal deformation of the lens. Its structure is simple and easy to manufacture and apply. Furthermore, the lens mounting structure provided in this application also includes a lubricating plate, which reduces direct contact friction between the mounting base and other metal structural components during installation, reducing debris generation. Simultaneously, it seals the external environment, preventing dust or debris from entering, thus improving lens cleanliness and lifespan. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the lens mounting structure in some embodiments provided in this application;

[0026] Figure 2 Cross-sectional views of the lens mounting structure in some embodiments provided in this application;

[0027] Figure 3 Exploded views of the lens mounting structure in some embodiments provided in this application;

[0028] Figure 4 Structural diagrams of the elastic retaining ring of the lens in some embodiments provided in this application;

[0029] Explanation of key component symbols:

[0030] 10-Mounting base, 11-Annular groove, 12-Cavity, 13-First annular step, 14-Second annular step, 20-Elastic pressure ring, 21-Annular body, 22-Elastic metal ring, 221-Metal connector, 222-Gap, 223-Metal ring, 23-Annular groove, 30-Sealing ring, 40-Lubricating sheet, 50-Mirror. Detailed Implementation

[0031] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be understood that the terms "upper," "lower," "rear," "left," "right," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0034] This application provides a lens mounting structure, see reference. Figures 1-4 The lens mounting structure includes:

[0035] Mounting base 10 includes a cavity 12 for mounting lens 50;

[0036] The elastic pressure ring 20 includes an annular body 21 and an elastic metal ring 22 disposed below the annular body 21. There is a gap 222 between the elastic metal ring 22 and the annular body 21 for the elastic metal ring 22 to deform under pressure. The elastic pressure ring 20 is used to press against the lens 50 installed in the cavity 12.

[0037] A sealing ring 30 is disposed within the cavity 12 to confine the elastic pressure ring 20 within the mounting base 10; and

[0038] Lubricating pads 40 are disposed on both sides of the mounting base 10; or disposed on one side of the mounting base 10 and on the surface of the elastic pressure ring 20 away from the lens 50, wherein the lubricating pads 40 are elastic and protrude from the surface of the mounting base 10 and / or the elastic pressure ring 20.

[0039] It should be noted that, in this application, the cavity provided on the mounting base is a through hole penetrating the mounting base. The lens is installed in the cavity, and the axis of the lens is parallel to the axis of the through hole. The elastic pressure ring is also a hollow and through metal ring, and the axis of the metal ring is also parallel to the axis of the through hole, allowing light to enter and pass through the lens and exit. The inner surface of the cavity of the mounting base is provided with a plurality of annular steps arranged sequentially from bottom to top, namely, a first annular step 13 and a second annular step 14; the inner diameter of the first annular step 13 is smaller than the inner diameter of the second annular step 14. The first annular step 13 is used to place the lens 50, and the axis of the first annular step 13 is on the same straight line or nearly on the same straight line as the axis of the lens 50. The sidewall of the first annular step 13 forms a wall to restrict the lateral movement of the lens 50.

[0040] The second annular step 14 is used to place the elastic pressure ring 20, providing support for the annular body portion of the elastic pressure ring 20. The elastic metal ring of the elastic pressure ring extends into the enclosure formed by the sidewall of the first annular step and presses against the lens. Therefore, in this application, the outer diameter of the annular body of the elastic pressure ring is larger than the maximum outer diameter of the elastic metal ring.

[0041] In order to make the elastic metal ring of the elastic pressure ring deform when it is pressed into the cavity, so that the elastic metal ring applies a certain pressure to the lens, the vertical distance from the first annular step to the second annular step is less than the sum of the height of the elastic metal ring and the thickness of the lens.

[0042] It should be noted that the elastic metal ring used in this application is made of metals with certain toughness or strength, such as copper, aluminum, or alloy materials, such as copper alloys or aluminum alloys, preferably made of copper or copper alloys.

[0043] In this application, the elastic metal ring is not a completely seamless ring with gaps in its sidewalls, but rather has certain gaps in its sidewalls. The material forming the elastic metal ring has a certain degree of toughness, rather than being a brittle metal or alloy, allowing it to deform under pressure. This causes the gaps to be compressed and deformed in the vertical direction, thus pressing the lens. Because this application uses an elastic metal ring to press the lens, it avoids the melting or aging of the pressing structure caused by the heat generated when the lens is exposed to high-energy laser light during use. At the same time, it avoids the insufficient elasticity or deformation capacity caused by using brittle materials or metal materials with insufficient deformation force to press the lens, which would make the lens difficult to press and easily cause lens displacement or damage.

[0044] In some embodiments, the elastic metal ring is a hollow metal ring.

[0045] In other embodiments, the elastic metal ring is a multi-layered metal ring connected by spiral connecting metal wires;

[0046] In other embodiments, the elastic metal ring 22 includes a metal ring 223 and at least two metal connectors 221; one end of each of the at least two metal connectors 221 is integrally connected to the metal ring 223, and the other end is integrally connected to the annular body 21; and the at least two metal connectors 221 are arranged in a ring array along the axis of the elastic metal ring 22, so that the metal connectors 221, the metal ring 223 and the annular body 21 form a plurality of gaps 222 for deformation.

[0047] Furthermore, a clamping platform for pressing the lens can be provided on the side of the metal ring away from the metal connector. Multiple clamping platforms can also be provided and arranged in a circular array along the axis of the annular body. It should be noted that the clamping platforms and the metal connector are alternately arranged relative to the metal ring; that is, the clamping platforms are positioned to correspond to the gap formed by the metal connector, the metal ring, and the annular body. This helps to improve the deformation and reset range of the elastic metal ring, further enhancing the clamping effect.

[0048] It should be noted that when the elastic metal ring presses against the lens, the elastic metal ring is in contact with the lens plane.

[0049] An annular groove 23 is provided on the outer wall of the annular body 21 of the elastic pressure ring 20. The sealing ring 30 is embedded in the annular groove 23 and is interference-fitted with the annular groove 23. There is a certain gap between the outer diameter of the annular body and the diameter of the surrounding wall on the second annular step of the mounting base. The outer diameter of the sealing ring is larger than the diameter of the surrounding wall of the second annular step, and the inner diameter of the sealing ring is smaller than the outer diameter of the annular body and smaller than or equal to the diameter of the circle containing the bottom surface of the annular groove. This ensures that when the annular body is pressed into the cavity of the mounting base, the sealing ring is deformed under pressure, preventing the elastic pressure ring from exiting the mounting base. The sealing ring is a resin ring or a rubber ring made of resin or rubber material.

[0050] The lens mounting structure provided in this application uses a sealing ring as a limiting structure to keep the elastic pressure ring in a compressed state on the lens. This avoids the problems of difficulty in installation, disassembly, and replacement caused by using screws and other fasteners to fix the structure used to compress the lens to the mounting base. Moreover, since the lens needs to be replaced and cleaned frequently, the fasteners need to be installed and disassembled frequently, which can easily bring in small contaminants such as debris. The sealing ring provided in this application as a fixing component can improve this defect.

[0051] In some embodiments, the depth of the annular groove is 0.5 to 1.5 mm, and the difference between the outer ring diameter and the inner ring diameter of the sealing ring and the difference between the depth of the annular groove is 0.2 to 0.3 mm, so that the elastic pressure ring is better confined in the cavity of the mounting base, while reducing the size of the elastic pressure ring and its obstruction to the lens and its strength.

[0052] The lens mounting structure is further provided with an annular lubricating plate for sealing. The inner diameter of the annular lubricating plate is larger than the diameter of the lens, and the annular lubricating plate is mounted on the mounting base and / or the annular body. The axis of the annular lubricating plate is collinear with or nearly collinear with the axis of the lens. The annular lubricating plate is a rubber or resin lubricating plate made of rubber or resin material. It is used to seal the environment in which the lens is located when the lens mounting structure is installed on other equipment, preventing dust or other impurities from entering the lens during operation, thereby improving the lens's service life and working accuracy.

[0053] In some embodiments, an annular groove 11 is provided on both the upper and lower sides of the mounting base. The annular groove 11 is used to provide a lubricating sheet 40. The thickness of the lubricating sheet 40 is greater than the depth of the annular groove 11, and it is used to seal the lens 50.

[0054] In other embodiments, the annular body 21 has an annular groove 11 on its surface away from the lens 50, and the mounting base 10 also has an annular groove 11 on its surface away from the annular body 21 where the annular groove 11 is located; the annular grooves 11 are respectively used to set the lubricating sheet 40, and the thickness of the lubricating sheet 40 is greater than the depth of the annular groove 11, for sealing the lens 50.

[0055] It should be noted that, in this application, the resins or rubbers used to prepare the sealing rings or annular lubricating sheets are all existing resins or rubbers that can achieve the same function, and these resins or rubbers are not improvements in this application, nor do they affect the understanding and application of the technical solutions claimed in this application by those skilled in the art. Similarly, the metals or alloys used to mold the elastic pressure rings in this application are also existing metals or alloys that can achieve the same function, and are not improvements in this application, nor do they affect the understanding and application of the technical solutions claimed in this application by those skilled in the art.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A mounting structure for a lens, characterized by, The utility model relates to a lens mounting seat, comprising: a mounting seat comprising a cavity for mounting a lens; a resilient pressure ring comprising a ring body and a resilient metal ring disposed below the ring body, the resilient metal ring and the ring body having a gap for the resilient metal ring to deform under pressure; the resilient pressure ring is used to press on the lens mounted in the cavity; a sealing ring disposed in the cavity for limiting the resilient pressure ring in the mounting seat; lubricating pieces disposed on both sides of the mounting seat; or disposed on one side of the mounting seat and on the surface of the resilient pressure ring away from the lens, the lubricating pieces are resilient and protrude from the surface of the mounting seat and / or the resilient pressure ring.

2. The mounting structure for a lens according to claim 1, wherein The resilient metal ring and the ring body are connected as a whole through at least two connecting blocks, and the at least two connecting blocks are arranged in a circular array along the resilient metal ring.

3. The mounting structure for a lens according to claim 1 or 2, characterized in that, The side of the resilient metal ring away from the ring body is provided with at least two pressing blocks arranged in a circular array along the resilient metal ring, and the pressing blocks are connected as a whole with the resilient metal ring.

4. The mounting structure for a lens according to claim 1, wherein The cavity penetrates through the mounting seat; a first annular step for mounting the lens is arranged on the side wall surrounding the cavity; The resilient metal ring is arranged corresponding to the first annular step.

5. The mounting structure for a lens according to claim 4, wherein A second annular step for mounting the resilient pressure ring is further arranged on the side wall surrounding the cavity; The first annular step and the second annular step have different inner diameters.

6. The mounting structure for a lens according to claim 5, wherein The vertical distance from the first annular step to the second annular step is less than the sum of the height of the resilient metal ring and the thickness of the lens.

7. The mounting structure for a lens according to any one of claims 1 to 2, 4 to 6, wherein An annular groove is arranged on the outer side of the ring body; the sealing ring is embedded in the annular groove and has an interference fit with the annular groove; The difference between the outer ring diameter and the inner ring diameter of the sealing ring is greater than the depth of the annular groove and greater than the distance between the bottom surface of the annular groove and the inner side of the cavity.

8. The mounting structure for a lens according to claim 7, wherein The depth of the annular groove is 0.5-1.5 mm; and / or The difference between the outer ring diameter and the inner ring diameter of the sealing ring and the depth of the annular groove is 0.2-0.3 mm.

9. The mounting structure for lenses according to claim 1, wherein The resilient pressure ring is any one of an aluminum ring, a copper ring, an aluminum alloy ring, or a copper alloy ring.

10. The mounting structure for lenses according to claim 1, characterized in that, Annular grooves are arranged on both the upper and lower sides of the mounting seat, the annular grooves are used to arrange lubricating pieces, and the thickness of the lubricating pieces is higher than the depth of the annular grooves; or An annular groove is arranged on the surface of the ring body away from the lens, and the surface of the mounting seat away from the ring body also has an annular groove; the annular grooves are used to arrange lubricating pieces, and the thickness of the lubricating pieces is higher than the depth of the annular grooves.

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