Optical fiber clamping mechanism for movable optical fiber grinding machine

Abstract

The invention discloses an optical fiber clamping mechanism for a movable optical fiber grinding machine. The optical fiber clamping mechanism comprises a fixing frame, a manual three-dimensional displacement table and an optical fiber clamp. Wherein the fixing frame is mounted on a machine body of the optical fiber grinding machine; the manual three-dimensional displacement table is mounted at the top of the fixing frame; the optical fiber clamp is installed at the top end of a sliding block of the manual type three-dimensional displacement table and used for clamping an optical fiber. The optical fiber grinding device ensures that the optical fibers are kept vertical in the grinding process, stress is uniform, bending is avoided, the multiple optical fiber clamps are supported to be nested to achieve simultaneous grinding of the multiple optical fibers, and the grinding quality and the operation efficiency are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of optical fiber grinding machines, and particularly relates to an optical fiber clamping mechanism for a mobile optical fiber grinding machine. BACKGROUND

[0002] An optical fiber grinding machine is a key device for processing optical fibers in the field of optical communication, and mainly processes the end face of an optical fiber ferrule through physical grinding. The grinding quality of the end face of the optical fiber directly affects important performance indicators such as optical transmission loss and connection loss of the optical fiber.

[0003] The existing optical fiber grinding machine comprises a clamping device and a grinding machine body, and a rotatable grinding disc is installed at the top end of the grinding machine body. The clamping device usually adopts a screw fastening or glue bonding method to fix the optical fiber. During the grinding process, the grinding disc rotates to grind the grinding end of the optical fiber installed on the clamping device, and the grinding disc and the clamping device move relative to each other in the height direction to set the amount of optical fiber grinding.

[0004] However, the existing optical fiber grinding machine has the following disadvantages during the grinding process: (1) the pressure between the optical fiber clamped by the clamping device and the grinding disc is unstable, resulting in uneven stress on the end face of the grinding end of the optical fiber, and the optical fiber is prone to breakage and scratches; (2) the angle between the large optical fiber and the grinding disc is difficult to ensure perpendicular, resulting in that the parameters such as grinding angle, apex offset and optical fiber height are out of tolerance after grinding, the detection is not passed, and then re-grinding is required, which is low in working efficiency; (3) during the existing grinding process, manual assistance is required for the fixation of the optical fiber throughout the process, and it is ensured that the optical fiber cannot be excessively bent and stressed during the grinding process. Two or more persons are required for large optical fiber bundles, which is low in efficiency. SUMMARY

[0005] The technical problem solved by the application is to overcome the deficiencies of the prior art and provide an optical fiber clamping mechanism for a mobile optical fiber grinding machine, which ensures that the optical fiber remains vertical, uniform in stress and avoids bending during the grinding process, and supports nesting of multiple optical fiber clamps to realize simultaneous grinding of multiple optical fibers, thereby improving the grinding quality and operation efficiency.

[0006] The application is achieved by the following technical scheme: an optical fiber clamping mechanism for a mobile optical fiber grinding machine, comprising: a fixing frame, a manual three-dimensional displacement table and an optical fiber clamp; wherein the fixing frame is installed on the body of the optical fiber grinding machine; the manual three-dimensional displacement table is installed at the top of the fixing frame; the optical fiber clamp is installed at the top end of the sliding block of the manual three-dimensional displacement table, and the optical fiber clamp is used to clamp the optical fiber.

[0007] The manual three-dimensional displacement table is used to drive the optical fiber clamp to move in three-dimensional space to adjust the relative position of the optical fiber clamp and the optical fiber ferrule clamp.

[0008] The manual three-dimensional displacement table comprises a first horizontal translation slide fixed to the top of the fixed frame, a vertical translation slide fixed to the slider of the first horizontal translation slide, and a second horizontal translation slide fixed to the slider of the vertical translation slide.

[0009] The optical fiber clamp comprises a fixed part provided with a movable slot penetrating in the first direction, a movable part movably mounted in the movable slot in the second direction, and two elastic parts extending in the second direction and abutting between the movable part and the slot wall of the movable slot.

[0010] The movable part and the movable slot have multi-segment arc-shaped surfaces in contact with the optical fiber.

[0011] The radius of the central segment of the arc-shaped surface is 15 mm, and the minimum gap between the central positions of the arc-shaped surfaces of the movable part and the movable slot is 2 mm when the movable part is in contact with the movable slot, so as to accommodate the optical fiber or fiber bundle with a diameter ranging from 2 mm to 30 mm.

[0012] The side of the movable part in contact with the optical fiber is provided with a protective strip.

[0013] The material of the protective strip is silica gel.

[0014] The second horizontal translation slide is provided with a plurality of sliders, and the top end of each slider is provided with the optical fiber clamp to simultaneously clamp and grind multiple optical fibers.

[0015] The application discloses a fiber grinder, which comprises a machine body, a fiber ferrule fixing mechanism and a movable fiber clamp mechanism.

[0016] Compared with the prior art, the application has the following advantages: (1) The application has high grinding quality and good stability: the relative position of the fiber and the grinding disc can be accurately adjusted through the three-dimensional displacement table, the fiber is vertically aligned, and the elastic constant pressure clamping mechanism is combined, so that the fiber grinding end face is uniformly stressed and the pressure is constant, end face scratches, damage and parameter out-of-tolerance are effectively avoided, and the grinding quality and consistency are significantly improved; (2) The application is convenient to operate and improves efficiency: the elastic compression type clamp is adopted, the fiber is quickly clamped and disassembled, one person can easily operate, and the disadvantages of low efficiency and the need for multiple people to cooperate in the traditional way are overcome. Multiple stations can be simultaneously ground to further improve the processing efficiency; (3) The application has strong universality and good protection: the unique arc-shaped contact surface and the silica gel protection strip design can adapt to the wide clamping needs of thin fiber to thick fiber bundle (2-30 mm), and effectively protect the surface and internal structure of the fiber from damage during clamping; (4) The application has simple structure and strong practicability: the whole mechanism is designed reasonably, the structure is compact, the manufacturing cost is low, it is easy to transform and implement on the existing fiber grinder, and has high practicality and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals are used throughout the several drawings to designate the same or similar parts. In the drawings: Figure 1 is a schematic diagram of the fiber grinder provided by the embodiment of the application; Figure 2 is a structural schematic diagram of the manual three-dimensional displacement table provided by the embodiment of the application; Figure 3 is a structural schematic diagram of the fiber clamp provided by the embodiment of the application; Figure 4 is a schematic diagram of the connection between the movable part and the movable groove provided by the embodiment of the application. DETAILED DESCRIPTION

[0018] Exemplary embodiments of the present disclosure will be described in detail below with reference to the drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict. The present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0019] Figure 1 is a schematic diagram of an optical fiber grinder provided by an embodiment of the present disclosure; Figure 2 is a structural schematic diagram of a manual three-dimensional displacement table provided by an embodiment of the present disclosure; Figure 3 is a structural schematic diagram of an optical fiber clamp provided by an embodiment of the present disclosure; Figure 4 is a schematic diagram of the connection between a movable member and a movable slot provided by an embodiment of the present disclosure.

[0020] As shown in Figure 1 and Figure 2 , the mobile optical fiber grinder uses an optical fiber clamping mechanism, which includes a fixed frame 31, a manual three-dimensional displacement table 32, and an optical fiber clamp 33. The fixed frame 31 is installed on the body 1 of the optical fiber grinder. The manual three-dimensional displacement table 32 is installed on the top of the fixed frame 31. The optical fiber clamp 33 is installed on the top end of the sliding block of the manual three-dimensional displacement table 32, and is used to clamp the optical fiber. The manual three-dimensional displacement table 32 is used to drive the optical fiber clamp 33 to move in three-dimensional space, so as to adjust the relative position of the optical fiber clamp 33 and the optical fiber ferrule clamp 22.

[0021] The manual three-dimensional displacement table 32 includes a first horizontal translation slide 321 fixed to the top of the fixed frame 31, whose extension direction is the second direction D2; a vertical translation slide 322 fixed to the sliding block 3211 of the first horizontal translation slide 321, whose extension direction is the third direction D3; and a second horizontal translation slide 323 fixed to the sliding block 3221 of the vertical translation slide 322, whose extension direction is the first direction D1. The optical fiber clamp 33 is installed on the sliding block 3231 of the second horizontal translation slide 323. The length direction of the first horizontal translation slide, i.e., the second direction, the length direction of the vertical translation slide, i.e., the third direction, and the length direction of the second horizontal translation slide, i.e., the first direction, are perpendicular to each other.

[0022] The optical fiber clamp 33 comprises a fixed part 333, a movable part 334, and two elastic parts 332. The movable part 334 is movably arranged in the movable slot 335 of the fixed part 333 along the second direction D2. The two elastic parts 332 are arranged between the movable part 334 and the slot wall of the movable slot 335 along the second direction D2. The movable part 334 can press and fix the optical fiber in the movable slot 335 under the elastic force of the elastic parts 332.

[0023] The pressing surface of the movable part 334 and the movable slot 335 in contact with the optical fiber is a multi-segment arc surface. The radius r of the central segment of the arc surface is 15 mm. When the movable part 334 is in contact with the movable slot 335, the minimum gap (h) between the central positions of the arc surfaces is 2 mm, so as to adapt to the optical fiber or fiber bundle with a diameter ranging from 2 mm (h) to 30 mm (2r).

[0024] The side of the movable part 334 in contact with the optical fiber is provided with a protective strip. The material of the protective strip is silica gel.

[0025] The second horizontal translation slide 323 is provided with a plurality of sliding blocks 3231. The top end of each sliding block 3231 is provided with an optical fiber clamp 33, so as to simultaneously clamp and grind a plurality of optical fibers.

[0026] As shown in Figure 1 The embodiment also provides an optical fiber grinding machine. The optical fiber grinding machine comprises a machine body 1, an optical fiber ferrule fixing mechanism 2, and a movable optical fiber clamping mechanism 3. The machine body 1 comprises a machine box 11 and a grinding disc 12. The optical fiber ferrule fixing mechanism 2 comprises a support frame 21 and an optical fiber ferrule clamp 22. The movable optical fiber clamping mechanism 3 comprises a fixed frame 31, a manual three-dimensional displacement table 32, and an optical fiber clamp 33. The grinding disc 12 and the support frame 21 are arranged on the top of the platform of the machine box 11. The support frame 21 is relatively fixed with respect to the machine box 11. The optical fiber ferrule clamp 22 is fixed to the lower end of the beam of the support frame 21. The position of the optical fiber ferrule clamp 22 can be adjusted along the first direction. The optical fiber ferrule clamp 22 is suitable for grinding ceramic ferrules and plastic ferrules. The first direction is the direction in which the support frame 21 is placed. Figure 1

[0027] The movable optical fiber clamping mechanism 3 is fixed to the side end of the machine box 11 through the I-shaped fixed frame 31. The manual three-dimensional displacement table 31 is arranged on the top of the fixed frame 31. Figure 2 ​As shown, a first horizontal translation slide 321 is fixed to the top of the mounting bracket 31 and extends along a second direction. It can be moved along the second direction by manually adjusting slider 3211. A vertical translation slide 322 is fixed to the top of the slider of the horizontal translation slide 321 and extends along a third direction. It can be moved along the third direction by manually adjusting slider 3221. A second horizontal translation slide 323 is fixed to the top of the slider of the translation slide 322 and extends along a first direction. It can be moved along the first direction by manually adjusting slider 3231. The moving area of ​​the horizontal translation slide 323 can cover the area of ​​the grinding disc. The second direction is perpendicular to the first direction in the horizontal plane, as shown below. Figure 2 D2 in the middle; the third direction is the vertical direction, such as... Figure 2 D3 in .

[0028] like Figure 3 and Figure 4 As shown, the fiber optic clamp 33 includes a main body 331, two elastic members 332, a fixing member 333, and a movable member 334. The fixing member is mounted on the top of the slider 3231 along a first direction; the movable member 334 is movably mounted in a movable slot 335 along a second direction, allowing the fiber optic cable to pass through the movable slot 335 along the first direction. The two elastic members 332 are arranged perpendicularly and extend along the second direction, resting between the movable member 334 and the movable slot 335. The movable member 334 can move along the second direction under the elastic deformation of the two elastic members 332, thereby pressing and fixing the fiber optic cable.

[0029] The surfaces of the movable component 334 and the movable slot 335 that contact the optical fiber adopt a multi-segment arc design. In this embodiment, considering that the diameter Ф of the optical fiber and optical fiber bundle is between 2-30 mm, the minimum gap at the middle position of the arc when the movable component 334 and the movable slot 335 contact is 2 mm (e.g., Figure 4 (h), the radius of the arc in the center section is 15 mm (e.g.) Figure 4 The arc-shaped contact surface ensures that optical fibers of different diameters can be fixed within the specified range. This design effectively prevents internal damage to the optical cable due to stress, and also allows the optical fiber to be more securely fixed at the center of the movable groove along the first direction, preventing it from shaking back and forth along the first direction during polishing.

[0030] A protective strip 336 is added to the side of the movable part 334 that contacts the optical fiber to further prevent damage to the optical fiber when the movable part 334 and the movable groove 335 clamp the optical fiber. The protective strip 336 is made of silicone.

[0031] Compared to fixing optical fibers by thread or glue, the optical fiber clamp body 33 in this embodiment uses two elastic elements 332, a movable element 334 and a movable groove 335 to clamp the optical fiber. The structure is simple, easy to install and remove the optical fiber, and has little impact on the optical fiber structure itself.

[0032] Before installing the fiber polishing, adjust the three translation sliders 3211 in the manual three-dimensional displacement slide 31 to ensure that the fiber clamp 33 and the fiber ferrule clamp 22 are on the same vertical axis.

[0033] In this embodiment, before the polishing machine is turned on, the optical fiber needs to be installed. The operator operates the movable part 334 to overcome the elastic part 332 and move it in the second direction to insert the optical fiber into the movable slot 335. The optical fiber extends downward from the bottom opening of the movable slot 335 until the end face of the optical fiber ferrule is inserted into the optical fiber ferrule clamp 22. The optical fiber ferrule is fixed in the optical fiber ferrule clamp. After installation, the operator releases the movable part 334, and the two elastic parts 332 return to their original deformation to push the movable part 334 to move in the second direction to press the optical fiber, so that the optical fiber is fixed on the clamp 33. The optical fiber remains vertical and there is no bending, ensuring that the end face of the optical fiber ferrule is subjected to uniform force during the polishing process, and constant pressure polishing is possible.

[0034] The movable groove 335 has an opening on one side, allowing the movable part 334 to extend a portion from the opening along the first direction, making it convenient for the operator to press and operate.

[0035] During the polishing process, the polishing disc 12 rotates within a limited range in the horizontal direction. The polishing disc 12 is used to clamp the end face of the fiber ferrule held by the fiber ferrule clamp 22. After the fiber is polished to the desired position, the operator first operates the fiber ferrule clamp 22 to release the polished fiber ferrule from the clamp 22, and then continues to operate the movable part 331 to move against the elastic part 332 in the second direction to release the fiber, so that the fiber can be taken out from the top opening of the movable slot 335.

[0036] On the horizontal translation slide 323, more sliders 3231 can be nested (considering the limitation of the grinding disc's grinding range for optical fiber ferrules, the upper limit is 3), and the tops of other sliders are simultaneously fixed with fiber optic clamps 33, allowing for the simultaneous grinding of multiple optical fibers. The fiber optic ferrule clamps 22 are perpendicularly corresponding to the multiple fiber optic clamps 33 and are fixed at different positions on the lower end of the support frame 21.

[0037] This embodiment solves the problems of unstable pressure between the optical fiber and the polishing disc caused by traditional clamping methods, uneven force on the polishing end face, and easy damage and scratches; it also solves the problem that it is difficult to ensure that large optical fibers or fiber bundles are perpendicular to the polishing disc during polishing, resulting in parameters such as polishing angle and vertex offset exceeding the tolerance and high rework rate; and it solves the problem that the existing optical fiber clamping operation is cumbersome and inefficient, especially when dealing with large fiber bundles, requiring multiple people to cooperate.

[0038] This embodiment boasts high grinding quality and stability: the three-dimensional displacement stage allows for precise adjustment of the relative position of the optical fiber and the grinding disc, ensuring vertical alignment of the fiber. Combined with an elastic constant-pressure clamping mechanism, it ensures uniform and constant force on the fiber grinding end face, effectively preventing end face scratches, damage, and parameter deviations, significantly improving grinding quality and consistency. This embodiment is also convenient and efficient: the elastic clamping fixture enables rapid clamping and disassembly of the optical fiber, allowing for easy operation by a single person. This overcomes the drawbacks of traditional methods, which are inefficient and require multiple operators. It supports simultaneous grinding at multiple stations, further improving processing efficiency. This embodiment is highly versatile and offers excellent protection: the unique arc-shaped contact surface and silicone protective strip design allow it to adapt to a wide range of clamping needs, from thin-diameter optical fibers to thick-diameter fiber bundles (2-30mm), effectively protecting the fiber surface and internal structure from damage during clamping. Finally, this embodiment is simple in structure and highly practical: the entire mechanism is rationally designed, compact, and has low manufacturing costs. It is easy to modify and implement on existing optical fiber grinding machines, possessing high practical and promotional value.

[0039] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A fiber clamping mechanism for a mobile fiber polishing machine, characterized by The utility model relates to a kind of mobile optical fiber grinding machine fiber clamping mechanism, including: fixed frame (31), manual three-dimensional displacement stage (32) and optical fiber clamp (33);Wherein, The fixed frame (31) is installed on the body (1) of optical fiber grinder; The manual three-dimensional displacement stage (32) is installed on the top of fixed frame (31); The optical fiber clamp (33) is installed on the slider top end of the manual three-dimensional displacement stage (32), and the optical fiber clamp (33) is used to clamp optical fiber. The manual three-dimensional displacement stage (32) is used to drive the optical fiber clamp (33) to move in three-dimensional space, to adjust the relative position of optical fiber clamp (33) and optical fiber ferrule clamp (22).

2. The optical fiber holding mechanism for a mobile optical fiber polisher according to claim 1, characterized by: The manual three-dimensional displacement stage (32) includes: first horizontal translation slide (321), fixed on the top of the fixed frame (31), the extension direction is second direction;Vertical translation slide (322), fixed on the slider (3211) of the first horizontal translation slide (321), the extension direction is third direction;Second horizontal translation slide (323), fixed on the slider (3221) of the vertical translation slide (322), the extension direction is first direction;Wherein, the optical fiber clamp (33) is installed on the slider (3231) of the second horizontal translation slide (323), the length direction of the first horizontal translation slide is second direction, the length direction of the vertical translation slide is third direction and the length direction of the second horizontal translation slide is first direction, which are perpendicular to each other.

3. The optical fiber holding mechanism for a mobile optical fiber polisher according to claim 1, characterized by: The optical fiber clamp (33) includes: fixed part (333), which is provided with movable slot (335) penetrating along first direction;Movable part (334), movably mounted in the movable slot (335) along second direction;Two elastic members (332) extend along second direction and abut between the movable part (334) and the slot wall of the movable slot (335);Wherein, the movable part (334) can press the optical fiber inserted in the movable slot (335) tightly under the elastic force of the elastic member (332).

4. The mobile optical fiber polishing machine fiber holding mechanism of claim 3, wherein: The compression surface of the movable part (334) and the movable slot (335) in contact with optical fiber is multi-arc surface.

5. The mobile optical fiber polishing machine fiber holding mechanism of claim 4, wherein: The radius of the central segment of the arc surface is 15 mm, and when the movable part (334) is in contact with the movable slot (335), the minimum gap between the central position of the arc surface of the movable part (334) and the central position of the arc surface of the movable slot (335) is 2 mm, to adapt to the optical fiber or optical fiber bundle with diameter ranging from 2 mm to 30 mm.

6. The optical fiber holding mechanism for a mobile optical fiber polisher according to claim 5, characterized in that: The side of the movable part (334) in contact with optical fiber is provided with a protective strip.

7. The mobile optical fiber polishing machine fiber holding mechanism of claim 4, wherein: The material of the protective strip is silica gel.

8. The mobile optical fiber polishing machine fiber holding mechanism of claim 7, wherein: The second horizontal translation slide (323) is provided with a plurality of sliders (3231), and the top end of each slider (3231) is provided with the optical fiber clamp (33), to realize simultaneous clamping and grinding of multiple optical fibers.

9. The mobile optical fiber polishing machine fiber holding mechanism of claim 3, wherein: The utility model relates to a kind of mobile optical fiber grinding machine fiber clamping mechanism, including: fixed frame (31), manual three-dimensional displacement stage (32) and optical fiber clamp (33);Wherein, 10. An optical fiber grinder characterized by ​ ​ The fiber ferrule fixing mechanism (2) and the mobile fiber grinding machine fiber clamping mechanism (3) are arranged on the machine body (1).

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