Optical fiber end surface glue-spreading device and method

Abstract

The invention discloses a device and method for gluing optical fiber end faces, comprising a vibration reduction base, a power module and an optical fiber fixing module. The power module comprises a motor fixing frame, a DC motor is arranged on the motor fixing frame, an upper motor shaft and a lower motor shaft are arranged at two ends of the DC motor respectively, a speed sensor is arranged below the DC motor, the speed sensor comprises a sensor fixing frame and a photoelectric code disk, a speed measuring base is arranged on the sensor fixing frame, the sensor fixing frame is fixedly mounted on the motor fixing frame, the optical fiber fixing module comprises an optical fiber fixing seat, a U-shaped frame and a cylindrical base, a plurality of optical fiber fixing seats can be symmetrically arranged on the upper surface of the U-shaped frame with the upper shaft of the DC motor as the symmetry axis, an optical fiber is arranged on the optical fiber fixing seat, the invention provides a special device and method for gluing optical fiber end faces, can perform gluing on a plurality of optical fiber end faces at the same time, is conducive to improving work efficiency, has a simple structure, and is convenient for people to operate.

Description

Technical Field

[0001] The present invention relates to the field of adhesive spreading technology, and in particular to an optical fiber end face adhesive spreading device and method. Background Art

[0002] Optical fiber devices are widely used in the fields of communications, aerospace, life sciences, etc. Photolithography processing technology is one of the commonly used methods for processing optical fiber devices, which usually includes process steps such as coating, exposure, development, and etching. Among them, coating is usually an indispensable step, and its purpose is to obtain a uniform photoresist film on the surface of the substrate. Most of the existing coating devices are based on spin coating and spraying methods, which are suitable for large-area substrates such as round wafers and optical glass. Single coating can usually only be operated on a single substrate. For optical fibers, due to factors such as small end face area and special structural characteristics that make fixing difficult, most of the existing coating devices are not suitable for coating the end face of optical fibers. There are few reports on coating devices and methods specifically used for optical fiber end faces. Therefore, in view of the shortcomings of the prior art in terms of applicability and coating efficiency, the present invention proposes a coating device and method for optical fiber end faces, which provides a special device and method for coating the end face of optical fibers, while effectively improving the coating efficiency. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problems existing in the prior art and to provide a device and method for applying glue to the end face of an optical fiber.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a fiber end face glue-smoothing device, comprising a vibration reduction base, a power module and a fiber fixing module, the power module comprising a motor fixing frame arranged on the vibration reduction base, a DC motor being arranged on the motor fixing frame, a motor upper shaft and a motor lower shaft being arranged at both ends of the DC motor, a speed sensor being arranged below the DC motor, the speed sensor comprising a sensor fixing frame and a photoelectric encoder arranged on the lower shaft of the motor, a speed measuring base cooperating with the photoelectric encoder being arranged on the sensor fixing frame, the sensor fixing frame being fixedly mounted on the motor fixing frame, the fiber fixing module comprising a fiber fixing seat, a U-shaped frame and a cylindrical base, the lower surface of the cylindrical base being vertically connected to the upper shaft of the DC motor through a flange coupling, the U-shaped frame being invertedly mounted on the upper surface of the cylindrical base through two legs, the fiber fixing seat being located on the upper surface of the U-shaped frame, the fiber fixing seat can be symmetrically arranged in a plurality of arrangements on the upper surface of the U-shaped frame with the upper shaft of the DC motor as the symmetry axis, and an optical fiber being arranged on the fiber fixing seat.

[0005] Preferably, the vibration-damping base comprises supporting legs and a bottom plate, the supporting legs are fixed at the four corners of the lower surface of the bottom plate, and the supporting legs are covered with PVC soft rubber tubes.

[0006] Preferably, the cylindrical base is a hollow structure, and notches are symmetrically cut on both sides of the cylindrical base, one end of the optical fiber is arranged on the optical fiber fixing seat, and the other end of the optical fiber is arranged in the notch.

[0007] The present invention also discloses a method for applying glue to an optical fiber end face, comprising any one of the optical fiber end face applying glue devices described above, the method comprising the following steps:

[0008] (1) With the end of the optical fiber to be glued facing upward, insert the optical fiber fixing seat from bottom to top to a fixed height position;

[0009] (2) dripping glue onto the end surface of the optical fiber, and rotating the optical fiber fixing module at a low speed for the first time to spread the photoresist on the end surface of the optical fiber;

[0010] (3) rotating the optical fiber fixing module at a high speed so that the photoresist in step (2) forms a uniform thin film on the end surface of the optical fiber to form a photoresist layer;

[0011] (4) Rotate the optical fiber fixing module at a low speed for the second time to remove excess solvent in the photoresist layer in step (3).

[0012] Preferably, the first low-speed rotation speed of the optical fiber fixing module in step (2) is 400-500 rpm, and the rotation time is 8-10 s.

[0013] Preferably, the method comprises the following steps: the optical fiber fixing module in step (3) rotates at a high speed of 2000-8000 rpm for a rotation time of 20-30 s.

[0014] Preferably, the method comprises the following steps: the second low-speed rotation speed of the optical fiber fixing module in step (4) is 400-500 rpm, and the rotation time is 10-15 s.

[0015] Beneficial effects of the present invention:

[0016] The present invention provides a special device and method for gluing the end face of an optical fiber. A plurality of optical fiber fixing seats are symmetrically arranged with the upper axis of a DC motor as the symmetry axis. A single gluing operation can be performed on a plurality of optical fiber end faces at the same time, which is beneficial to improving work efficiency. The present invention has a simple structure and is easy to operate. It is a gluing device and method specially used for gluing the end face of an optical fiber, and effectively solves the problem of the inapplicability of existing gluing devices in gluing the end face of an optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of optical fiber installation of the present invention.

[0020] Figure annotation:

[0021] 10-vibration reduction base 11-power module 12-optical fiber fixing module 13-optical fiber 101-support leg 102-base plate 111-DC motor 112-motor fixing bracket 113-photoelectric encoder 114-sensor fixing bracket 115-motor upper shaft 116-motor lower shaft 117-speed measuring base 121-flange coupling 122-cylindrical base 123-U-shaped frame 124-optical fiber fixing seat. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Reference Figure 1-Figure 2In a preferred embodiment of the present invention, a fiber end face glue-smoothing device comprises a vibration reduction base 10, a power module 11 and a fiber fixing module 12, wherein the power module 11 comprises a motor fixing frame 112 arranged on the vibration reduction base 10, a DC motor 111 is arranged on the motor fixing frame 112, a motor upper shaft 115 and a motor lower shaft 116 are arranged at both ends of the DC motor 111, a speed sensor is arranged below the DC motor 111, the speed sensor comprises a sensor fixing frame 114 and a photoelectric encoder 113 arranged on the motor lower shaft 116, and a measuring sensor cooperating with the photoelectric encoder 113 is arranged on the sensor fixing frame 114 The sensor fixing frame 114 is fixedly mounted on the motor fixing frame 112. The optical fiber fixing module 12 includes an optical fiber fixing seat 124, a U-shaped frame 123 and a cylindrical base 122. The lower surface of the cylindrical base 122 is connected to the upper shaft 115 of the motor through a flange coupling 121. The U-shaped frame 123 is invertedly mounted on the upper surface of the cylindrical base 122 through two legs. The optical fiber fixing seat 124 is located on the upper surface of the U-shaped frame 123. A plurality of optical fiber fixing seats 124 can be symmetrically arranged on the upper surface of the U-shaped frame 123 with the upper shaft 115 of the motor as the symmetry axis. The optical fiber fixing seat 124 is provided with an optical fiber 13.

[0027] The speed sensor uses a photoelectric code disk speed measurement method. The photoelectric code disk speed measurement method is to fix a photoelectric disk on the end shaft of the motor rotor. The photoelectric disk is provided with one or more light-transmitting gratings, and each grating has a corresponding photosensitive element behind it. As the motor rotates, the photoelectric disk also rotates. When a fixed light source shines on the photoelectric disk, the light passing through the grating is received by the photosensitive element and generates a pulse electrical signal. If the number of codes on the photoelectric disk is 1, and the number of pulses measured within time t is N, then the speed n = 60N / (t*1). The more codes on the code disk, the higher the measurement accuracy.

[0028] Specifically, the photoelectric code disk speed measurement method is a method known to those skilled in the art. Those skilled in the art can learn about it through technical manuals or obtain its principle through conventional experimental methods. It is briefly introduced here without further elaboration.

[0029] As a preferred embodiment of the present invention, it may also have the following additional technical features:

[0030] In this embodiment, the vibration-damping base 10 includes support legs 101 and a bottom plate 102. The support legs 101 are fixed at the four corners of the lower surface of the bottom plate 102. The support legs 101 are covered with PVC soft rubber tubes to reduce vibration during the glue-spinning process.

[0031] In this embodiment, the cylindrical base 122 is a hollow structure, and notches are symmetrically cut on both sides of the cylindrical base 122. One end of the optical fiber 13 is arranged on the optical fiber fixing seat 124, and the other end of the optical fiber 13 is arranged in the notch, which facilitates the installation of the optical fiber 13.

[0032] The present invention also discloses a method for applying glue to an optical fiber end face, comprising any one of the optical fiber end face applying glue devices described above, the method comprising the following steps:

[0033] (1) With the end of the optical fiber 13 to be coated facing upward, insert the optical fiber 13 fixing seat from bottom to top to a fixed height position;

[0034] (2) dripping glue onto the end surface of the optical fiber 13, rotating the optical fiber fixing module 12 at a low speed for the first time, and spreading the photoresist on the end surface of the optical fiber 13;

[0035] (3) rotating the optical fiber fixing module 12 at a high speed so that the photoresist in step (2) forms a uniform thin film on the end surface of the optical fiber 13 to form a photoresist layer;

[0036] (4) Rotate the optical fiber fixing module 12 at a low speed for the second time to remove excess solvent in the photoresist layer in step (3).

[0037] In this embodiment, the first low-speed rotation speed of the optical fiber fixing module 12 in step (2) is 400-500 rpm, and the rotation time is 8-10 s.

[0038] In this embodiment, the optical fiber fixing module 12 in step (3) rotates at a high speed of 2000-8000 rpm, and the rotation time is 20-30 seconds.

[0039] In this embodiment, the second low-speed rotation of the optical fiber fixing module 12 in step (4) is 400-500 rpm, and the rotation time is 10-15 s.

[0040] The present invention provides a special device and method for gluing the end face of an optical fiber 13. A plurality of optical fiber fixing seats 124 are symmetrically arranged with the upper shaft 115 of the motor as the symmetry axis. A single gluing operation can be performed on the end faces of a plurality of optical fibers 13 at the same time, which is beneficial to improving work efficiency. The present invention has a simple structure and is easy to operate. It is a gluing device and method specially used for the end face of an optical fiber 13, and effectively solves the problem of the inapplicability of the existing gluing device in gluing the end face of an optical fiber 13.

[0041] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0042] The above description is only a preferred implementation mode of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means belongs to the protection scope of the present invention.

Claims

1. A method for coating the end face of an optical fiber, characterized in that: A fiber end surface glue-smoothing device is used, the fiber end surface glue-smoothing device comprises a vibration reduction base, a power module and a fiber fixing module, the power module comprises a motor fixing frame arranged on the vibration reduction base, a DC motor is arranged on the motor fixing frame, a motor upper shaft and a motor lower shaft are arranged at two ends of the DC motor respectively, a speed sensor is arranged below the DC motor, the speed sensor comprises a sensor fixing frame and a photoelectric encoder arranged on the lower shaft of the motor, a speed measuring base matched with the photoelectric encoder is arranged on the sensor fixing frame, the sensor fixing frame is fixedly installed on the motor fixing frame, the fiber fixing module comprises a fiber fixing seat, a U-shaped frame and a cylindrical base, the lower surface of the cylindrical base is vertically connected to the upper shaft of the DC motor through a flange coupling, the U-shaped frame is invertedly installed on the upper surface of the cylindrical base through two legs, the fiber fixing seat is located on the upper surface of the U-shaped frame, a plurality of fiber fixing seats are symmetrically arranged on the upper surface of the U-shaped frame with the upper shaft of the DC motor as the symmetry axis, and an optical fiber is arranged on the fiber fixing seat; The method of gluing the optical fiber end face is: (1) With the end of the optical fiber to be glued facing upward, insert the optical fiber fixing seat from bottom to top to a fixed height position; (2) dripping glue onto the end surface of the optical fiber, and rotating the optical fiber fixing module at a low speed for the first time to spread the photoresist on the end surface of the optical fiber; (3) rotating the optical fiber fixing module at a high speed so that the photoresist in step (2) forms a uniform thin film on the end surface of the optical fiber to form a photoresist layer; (4) rotating the optical fiber fixing module at a low speed for a second time to remove excess solvent in the photoresist layer in step (3); The first low-speed rotation speed of the optical fiber fixing module in step (2) is 400-500 rpm; The optical fiber fixing module in step (3) rotates at a high speed of 2000-8000 rpm; The second low-speed rotation speed of the optical fiber fixing module in step (4) is 400-500 rpm.

2. A method for coating an optical fiber end face according to claim 1, characterized in that: The vibration-damping base comprises supporting legs and a bottom plate. The supporting legs are fixed at the four corners of the lower surface of the bottom plate, and the supporting legs are covered with PVC soft rubber tubes.

3. A method for coating an optical fiber end face according to claim 1, characterized in that: The cylindrical base is a hollow structure, and notches are symmetrically cut on both sides of the cylindrical base. One end of the optical fiber is arranged on the optical fiber fixing seat, and the other end of the optical fiber is arranged in the notch.

4. A method for coating an optical fiber end face according to claim 1, characterized in that: The method comprises the following steps: in step (2), the first low-speed rotation of the optical fiber fixing module takes place for 8-10 seconds.

5. The method for coating an optical fiber end face according to claim 1, characterized in that: The method comprises the following steps: in step (3), the optical fiber fixing module rotates at high speed for a time period of 20-30 seconds.

6. A method for coating an optical fiber end face according to claim 1, characterized in that: The method comprises the following steps: in step (4), the optical fiber fixing module rotates at a low speed for a second time for a rotation time of 10-15 seconds.

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