Dynamic adjustment device and method for optical fiber drawing coating die

Abstract

This application relates to the field of optical fiber production technology, and in particular to a dynamic adjustment device and method for an optical fiber drawing and coating mold. The device includes a fixed frame, a first adjustment seat, a second adjustment seat, and a coating mold. The first adjustment seat is disposed on the fixed frame and can move on a preset plane. The second adjustment seat is disposed on the fixed frame and can move on the preset plane. The coating mold is disposed between the first adjustment seat and the second adjustment seat. The upper end of the coating mold is connected to the first adjustment seat, and the lower end of the coating mold is connected to the second adjustment seat. The coating mold can be moved to a position coaxial with the optical fiber core under the action of the first adjustment seat and the second adjustment seat, so that the coating device can accurately and uniformly coat the coating material around the optical fiber core, ensuring that the coating layer and the optical fiber core maintain good concentricity.

Description

Technical Field

[0001] This application relates to the field of optical fiber production technology, and in particular to a dynamic adjustment device and method for optical fiber drawing and coating mold. Background Technology

[0002] Optical fibers have extremely high requirements for signal transmission quality in fields such as communications. The uniformity of the coating thickness and the concentricity between the coating and the fiber core directly affect the performance of the fiber. Poor concentricity will cause changes in the transmission mode of the optical signal within the fiber, leading to signal distortion and increased loss, thus reducing the communication quality of the fiber. Calibration allows the coating device to accurately and uniformly coat the coating material around the fiber core, ensuring good concentricity between the coating and the fiber core.

[0003] Currently, coating equipment is recalibrated after the production line has stopped and the furnace has completely cooled down, relying on human judgment to determine if it is centered. This means that when coating deviation occurs and centering needs to be calibrated, the line must be stopped and the furnace cooled down for calibration, impacting fiber coating efficiency. Summary of the Invention

[0004] This application provides a dynamic adjustment device and method for optical fiber drawing and coating molds, which solves the problem in the prior art that when the center value needs to be calibrated for coating off-center layer, the line must be stopped and cooled down for calibration, resulting in low optical fiber coating efficiency.

[0005] On the one hand, this application provides a dynamic adjustment device for an optical fiber drawing and coating mold, comprising:

[0006] Fixture;

[0007] The first adjustment seat is mounted on the fixed frame and can move on a preset plane;

[0008] The second adjustment seat is mounted on the fixed frame and can move on a preset plane;

[0009] The coating mold is positioned between the first adjustment seat and the second adjustment seat. The upper end of the coating mold is connected to the first adjustment seat, and the lower end of the coating mold is connected to the second adjustment seat. The coating mold can be moved to a position coaxial with the optical fiber core under the action of the first adjustment seat and the second adjustment seat.

[0010] In one possible design, the first adjustment seat includes:

[0011] The first fixing plate is installed on the fixing frame;

[0012] The first movable plate is disposed on the upper surface of the first fixed plate;

[0013] The first driver, at least three, has its non-driving end hinged to the first fixed plate and its driving end hinged to the first movable plate;

[0014] The second adjustment seat includes:

[0015] The second fixing plate is installed on the fixing frame;

[0016] The second movable plate is located on the upper surface of the second fixed plate;

[0017] The second actuator, at least three in number, has its non-driving end hinged to the second fixed plate and its driving end hinged to the second movable plate.

[0018] In one possible design, the device also includes:

[0019] The first elastic pad has its two opposite ends connected to the upper end face of the coating mold and the first movable plate, respectively.

[0020] The second elastic pad has its two ends connected to the lower end face of the coating mold and the second movable plate, respectively.

[0021] In one possible design, the first elastic pad and the second elastic pad each include a rubber base pad and an airbag pad, with the airbag pad sandwiched between two adjacent rubber base pads.

[0022] In one possible design, rolling parts are provided between the first fixed plate and the first movable plate, and between the second fixed plate and the second movable plate.

[0023] In one possible design, displacement sensors are installed on the drive ends of the first driver and the second driver, respectively; angle rotary encoders are installed at the hinge points between the non-drive ends of the first driver and the first fixed plate, and at the hinge points between the non-drive ends of the second driver and the second fixed plate, respectively.

[0024] In one possible design, the first actuator and the second actuator are respectively driving cylinders, which are connected to the hydraulic oil tank through multi-position proportional valves.

[0025] In one possible design, the device also includes:

[0026] The first optical image measuring instrument is used to detect the position of the intersection point between the fiber core and the upper end face of the coating mold;

[0027] The second optical image measuring instrument is used to detect the angle between the cladding layer of the optical fiber core and the lower end face of the coating mold.

[0028] On the other hand, this application also provides a method for dynamically adjusting an optical fiber drawing and coating die, which employs the optical fiber drawing and coating die dynamic adjustment device described above, and the method includes:

[0029] The first adjustment seat moves along the preset plane so that the fiber cores intersect at the center point of the upper end face of the coating mold;

[0030] The second adjustment seat moves along the preset plane so that the included angle between the cladding layer of the optical fiber core and the lower end face of the coating mold is equal.

[0031] The beneficial effects of this application are as follows:

[0032] The optical fiber drawing and coating mold dynamic adjustment device of this application, by setting a first adjustment seat and a second adjustment seat, connects the upper end of the coating mold to the first adjustment seat and the lower end of the coating mold to the second adjustment seat. During the fiber drawing process, once the optical fiber deviates from the center position of the coating mold, the coating mold can move to a position coaxial with the optical fiber core under the action of the first adjustment seat and the second adjustment seat. This allows the coating device to accurately and evenly coat the coating material around the optical fiber core, ensuring that the coating layer and the optical fiber core maintain good concentricity.

[0033] The optical fiber drawing and coating mold dynamic adjustment method provided in this application, because it adopts the optical fiber drawing and coating mold dynamic adjustment device of this application, also includes all the above-mentioned advantages of the optical fiber drawing and coating mold dynamic adjustment device. Attached Figure Description

[0034] 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.

[0035] Figure 1 This is a front view of the dynamic adjustment device for the optical fiber drawing and coating mold provided in an embodiment of this application;

[0036] Figure 2 This is a top view of the dynamic adjustment device for the optical fiber drawing and coating mold provided in the embodiments of this application;

[0037] Figure 3 for Figure 2 Sectional view of AA;

[0038] Figure 4 This is a schematic diagram of the structure of the first elastic pad and the second elastic pad of the dynamic adjustment device for optical fiber drawing and coating mold provided in the embodiment of this application.

[0039] Figure 5 This is a schematic diagram of the optical fiber core in the coating mold.

[0040] Figure label:

[0041] 100, First adjusting seat; 110, First fixing plate; 120, First movable plate; 130, First driver; 200, Second adjusting seat; 210, Second fixing plate; 220, Second movable plate; 230, Second driver; 300, Fixing frame; 400, Coating mold; 500, First elastic pad; 600, Second elastic pad; 610, Rubber base pad; 620, Airbag pad; 700, Fiber optic core. Detailed Implementation

[0042] 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.

[0043] The following is combined with Figures 1-5 This application describes the dynamic adjustment device for optical fiber drawing and coating molds provided in the embodiments of this application.

[0044] Reference Figure 1 As shown, the dynamic adjustment device for fiber drawing and coating molds provided in this application embodiment includes a fixed frame, a first adjustment seat 100, a second adjustment seat 200, and a coating mold 400. The fixed frame 300 includes several fixed rods, for example, four fixed rods arranged vertically. The first adjustment seat is sleeved on the fixed rods and can move on a preset plane, which is a plane perpendicular to the length direction of the fixed rods. The second adjustment seat 200 is sleeved on the fixed rods and can move on a plane perpendicular to the length direction of the fixed rods. The coating mold 400 is disposed between the first adjustment seat and the second adjustment seat 200. The upper end of the coating mold 400 is connected to the first adjustment seat, and the lower end of the coating mold 400 is connected to the second adjustment seat 200. The first adjustment seat, the coating mold 400, and the second adjustment seat 200 are each provided with vertically penetrating clearance holes. The fiber core 700 enters from the upper end of the coating mold 400 and exits from the lower end of the coating mold 400. During the coating process, the central axis of the coating mold 400 should remain coaxial with the fiber core 700. However, during the coating process, the fiber core 700 may deviate from the central axis of the coating mold 400. At this time, the coating mold 400 can be moved to a position coaxial with the fiber core 700 under the drive of the first adjustment seat and the second adjustment seat 200, so that the coating layer on the outer surface of the fiber core 700 maintains good concentricity with the fiber core 700.

[0045] Reference Figure 2 , Figure 3As shown, in some embodiments, the first adjusting seat includes a first fixed plate 110, a first movable plate 120, and a first driver 130. The first fixed plate 110 is a square plate with holes at its four corners, and is fitted onto a fixed rod. The first movable plate 120 rests on the upper surface of the first fixed plate 110, is square, and can move on the first fixed plate 110. Both the first fixed plate 110 and the first movable plate 120 have clearance holes at their centers. There are at least three first drivers 130, for example, four. The non-driving ends of the four first drivers 130 are hinged to the first fixed plate 110, and the driving ends of the four first drivers 130 are hinged to the four corners of the first movable plate 120. Thus, the four first drivers 130 cooperate to drive the first movable plate 120 to move slightly laterally, longitudinally, and diagonally along the first fixed plate 110.

[0046] The second adjustment seat 200 includes a second fixed plate 210, a second movable plate 220, and a second actuator 230. The second fixed plate 210 is a square plate with holes at its four corners and is fitted onto a fixed rod. The second movable plate 220 rests on the upper surface of the second fixed plate 210. The second movable plate 220 is also square and can move on the second fixed plate 210. Both the second fixed plate 210 and the second movable plate 220 have clearance holes at their centers. There are at least three second actuators 230, for example, four. The non-driving ends of the four second actuators 230 are hinged to the second fixed plate 210, and the driving ends of the four second actuators 230 are hinged to the four corners of the second movable plate 220. Thus, the four second actuators 230 cooperate to drive the second movable plate 220 to move slightly laterally, longitudinally, and diagonally along the second fixed plate 210.

[0047] Reference Figure 3As shown, a first elastic pad 500 is provided between the upper end face of the coating mold 400 and the first movable plate 120. The opposite ends of the first elastic pad 500 are connected to the upper end face of the coating mold 400 and the first movable plate 120, respectively. For example, the first elastic pad 500 is a rubber pad. The first elastic pads 500 are distributed circumferentially along the upper end face of the coating mold 400, and the upper and lower ends of each first elastic pad 500 are bonded and fixed to the upper end face of the coating mold 400 and the first movable plate 120, respectively. A second elastic pad 600 is provided between the lower end face of the coating mold 400 and the second movable plate 220. The opposite ends of the second elastic pad 600 are connected to the lower end face of the coating mold 400 and the second movable plate 220, respectively. For example, the second elastic pad 600 is a rubber pad. The second elastic pads 600 are distributed circumferentially along the lower end face of the coating mold 400, and the upper and lower ends of each second elastic pad 600 are bonded and fixed to the lower end face of the coating mold 400 and the second movable plate 220, respectively.

[0048] Thus, since the first elastic pad 500 and the second elastic pad 600 have elastic shrinkage, when the fiber core 700 is offset, causing the central axis of the coating mold 400 to no longer be coaxial with the fiber core 700, when the first movable plate 120 drives the upper end of the coating mold 400 and the second movable plate 220 drives the lower end of the coating mold 400 to move in the corresponding directions, the first elastic pad 500 and the second elastic pad 600 in the corresponding positions will produce different degrees of elastic deformation, thereby causing the coating mold 400 to tilt and making the central axis of the coating mold 400 coaxial with the fiber core 700.

[0049] Reference Figure 4 As shown, in some specific embodiments, the first elastic pad 500 and the second elastic pad 600 respectively include a rubber base pad 610 and an airbag pad 620. The airbag pad 620 is integrally formed between two adjacent rubber base pads 610, and the bladder of the airbag pad 620 is made of rubber and filled with gas. In this way, the elasticity of the first elastic pad 500 and the second elastic pad 600 can be improved. When the first movable plate 120 and the second movable plate 220 move in the corresponding directions, the first elastic pad 500 and the second elastic pad 600 in the corresponding positions will more easily generate elastic deformation, thereby causing the coating mold 400 to tilt and making the central axis of the coating mold 400 coaxial with the optical fiber core 700.

[0050] In some specific embodiments, rolling portions are respectively provided between the first fixed plate 110 and the first movable plate 120, and between the second fixed plate 210 and the second movable plate 220. For example, multiple rolling portions are distributed in a rectangular array, and the rolling portions are rotatably mounted on the top surface of the first fixed plate 110 / second fixed plate 210 and respectively abut against the bottom surface of the first movable plate 120 / second movable plate 220 to reduce the resistance encountered by the first movable plate 120 / second movable plate 220 during translation, thereby reducing kinetic energy loss and improving motion control accuracy. In some embodiments, the rolling portion is a omnidirectional ball.

[0051] In some specific embodiments, the device further includes a first optical image measuring instrument and a second optical image measuring instrument. The first optical image measuring instrument is used to detect the position of the intersection point between the fiber core 700 and the upper end face of the coating mold 400; the second optical image measuring instrument is used to detect the angle between the cladding layer of the fiber core 700 and the lower end face of the coating mold 400.

[0052] In some specific embodiments, displacement sensors are respectively installed at the driving ends of the first driver 130 and the second driver 230 to detect the displacement of the corresponding first driver 130 or second driver 230; angle rotary encoders are respectively installed at the hinge points of the non-driving ends of the first driver 130 and the first fixed plate 110, and at the hinge points of the non-driving ends of the second driver 230 and the second fixed plate 210 to detect the rotation angle of the corresponding hinge points. The first driver 130 and the second driver 230 are respectively driving cylinders, and the first driver 130 and the second driver 230 are respectively connected to the hydraulic oil tank through multi-position multi-way proportional valves. The device also includes a controller, which is electrically connected to each displacement sensor, each angle rotary encoder, each multi-position multi-way proportional valve, the first optical image measuring instrument, and the second optical image measuring instrument. The controller can receive position signals detected by the first optical image measuring instrument and cladding angle signals detected by the second optical image measuring instrument. It can also receive displacement signals detected by the displacement sensors and rotation angle signals detected by the angle rotary encoders. Based on these signals, the controller controls each multi-position multi-way proportional valve to operate, thereby controlling the displacement and swing angle of each first driver 130 and each second driver 230. This drives the coating mold 400 to move to a position coaxial with the optical fiber core 700, so that the coating layer on the outer surface of the optical fiber core 700 maintains good concentricity with the optical fiber core 700.

[0053] Reference Figure 5 As shown, this application embodiment also provides a method for dynamically adjusting an optical fiber drawing and coating mold 400, which uses the dynamic adjustment device for the optical fiber drawing and coating mold 400 in the above embodiment. The method includes:

[0054] The first adjusting seat is moved along a preset plane so that the fiber cores 700 intersect at the center point of the upper end face of the coating mold 400. Specifically, based on the position signal detected by the first optical image measuring instrument, one or more corresponding first drivers 130 generate corresponding displacement and swing angles, causing the first movable plate 120 to move the upper end of the coating mold 400 until the intersection point of the fiber cores 700 on the upper end face of the coating mold 400 coincides with the center point of the upper end face of the coating mold 400.

[0055] The second adjusting seat is moved along a preset plane so that the included angle α between the cladding layer of the fiber core 700 and the lower end face of the coating mold 400 is equal. Specifically, based on the included angle signal of the cladding layer detected by the second optical image measuring instrument, one or more corresponding second drivers 230s generate corresponding displacement and swing angles, causing the second movable plate 220 to move the lower end of the coating mold 400 until the included angle α between the front, rear, left, and right sides of the cladding layer of the fiber core 700 and the lower end face of the coating mold 400 are all equal. At this point, it indicates that the coating material is uniformly coated around the fiber core 700, the coating layer and the fiber core 700 maintain good concentricity, and the fiber performance is good after coating.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A dynamic adjustment device for an optical fiber drawing and coating mold, characterized in that, include: Fixture; The first adjustment seat is mounted on the fixed frame and can move on a preset plane; The second adjustment seat is mounted on the fixed frame and can move on a preset plane; A coating mold is disposed between the first adjustment seat and the second adjustment seat. The upper end of the coating mold is connected to the first adjustment seat, and the lower end of the coating mold is connected to the second adjustment seat. The coating mold can be moved to a position coaxial with the optical fiber core under the drive of the first adjustment seat and the second adjustment seat. The first adjustment seat includes: The first fixing plate is installed on the fixing frame; The first movable plate is disposed on the upper end surface of the first fixed plate; The first driver, at least three, has its non-driving end hinged to the first fixed plate and its driving end hinged to the first movable plate; The second adjustment seat includes: The second fixing plate is installed on the fixing frame; The second movable plate is disposed on the upper end surface of the second fixed plate; The second actuator, at least three in number, has its non-driving end hinged to the second fixed plate and its driving end hinged to the second movable plate. Also includes: The first elastic pad has its two opposite ends connected to the upper end face of the coating mold and the first movable plate, respectively. The second elastic pad has its two ends connected to the lower end face of the coating mold and the second movable plate, respectively.

2. The dynamic adjustment device for optical fiber drawing and coating mold according to claim 1, characterized in that: The first elastic pad and the second elastic pad each include a rubber base pad and an airbag pad, with the airbag pad sandwiched between two adjacent rubber base pads.

3. The dynamic adjustment device for optical fiber drawing and coating mold according to claim 1 or 2, characterized in that: Rolling parts are respectively provided between the first fixed plate and the first movable plate, and between the second fixed plate and the second movable plate.

4. The dynamic adjustment device for optical fiber drawing and coating mold according to claim 1 or 2, characterized in that: Displacement sensors are installed on the driving ends of the first driver and the second driver, respectively; angle rotary encoders are installed at the hinge points of the non-driving ends of the first driver and the first fixed plate, and at the hinge points of the non-driving ends of the second driver and the second fixed plate, respectively.

5. The dynamic adjustment device for optical fiber drawing and coating mold according to claim 4, characterized in that: The first driver and the second driver are respectively driving cylinders, and are connected to the hydraulic oil tank through multi-position multi-way proportional valves.

6. The dynamic adjustment device for optical fiber drawing and coating mold according to claim 5, characterized in that, Also includes: The first optical image measuring instrument is used to detect the position of the intersection point between the fiber core and the upper end face of the coating mold; The second optical image measuring instrument is used to detect the angle between the cladding layer of the optical fiber core and the lower end face of the coating mold.

7. A method for dynamically adjusting an optical fiber drawing and coating mold, characterized in that, The method of using the dynamic adjustment device for optical fiber drawing and coating mold according to any one of claims 1-6 includes: The first adjustment seat moves along the preset plane so that the fiber cores intersect at the center point of the upper end face of the coating mold; The second adjustment seat moves along the preset plane so that the included angle between the cladding layer of the optical fiber core and the lower end face of the coating mold is equal.

Images