A device for detecting changes in the shape of a tapered fiber drawing tower

Abstract

This invention discloses a device for detecting change points in tapered optical fiber drawing towers, relating to the field of tapered optical fiber production technology. The invention includes a frame and a set of symmetrically arranged roller mechanisms. Each roller mechanism includes a sleeve body with a hollow cylindrical air-filled sleeve fixed to its circumferential side. A sealing plate and a sealing ring are respectively provided at both ends of the sleeve body. A partition ring within the sleeve body separates a main chamber and a secondary chamber near the sealing plate. By using two roller structures and ensuring soft contact between the optical fiber and the rollers through the gas-filled air-filled sleeve, this invention protects the optical fiber surface. The design of a piston and spring within the sleeve body, along with the pressure change within the air-filled sleeve detected by a distance sensor, allows for the determination of change points in the tapered optical fiber, ensuring effective fiber drawing while improving detection accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of tapered optical fiber production technology, and in particular relates to a device for detecting change points in tapered optical fiber drawing towers. Background Technology

[0002] In fiber optic drawing towers, the length of optical fibers can be measured by a length measuring mechanism. This involves detecting the length of the fiber by using an encoder to detect the rollers rolling along the fiber. However, for the processing of tapered optical fibers, not only is length measurement required, but also marking points need to be set on the coated fiber surface. Therefore, it is also necessary to detect the position of the change points to ensure the accuracy of the inkjet markings at the fiber diameter change points (tapered sections) in the subsequent marking process.

[0003] Since the diameter of tapered optical fibers is uniform after coating, it is not easy to measure the point of change. Therefore, the measurement is carried out before coating. However, due to the variation in the fiber diameter, traditional rollers, even with pressure roller structures, cannot effectively measure the change. At the same time, the drawing tower has a high drawing speed, and hard contact may affect the fiber drawing speed, thus affecting the drawing effect and efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a device for detecting the change point of a tapered optical fiber drawing tower. By setting up two roller structures and having a gas-filled airbag sleeve in contact with the optical fiber, a soft contact is ensured between the optical fiber and the rollers, which can protect the surface of the optical fiber. Through the design of a piston and spring inside the sleeve, the pressure change inside the airbag sleeve can be measured by detecting the position of the piston body through a distance sensor. This allows for the determination of the change point of the tapered optical fiber, ensuring the optical fiber drawing effect while improving the detection accuracy.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a change point detection device for a tapered fiber drawing tower, comprising a frame and a set of symmetrically arranged roller mechanisms; The roller mechanism includes a sleeve body, on which a hollow cylindrical airbag sleeve is fixed on the circumferential side. A sealing plate and a sealing ring are respectively provided at both ends of the sleeve body. A partition ring is provided inside the sleeve body to separate a main chamber and a secondary chamber near the sealing plate. The inner side of the airbag sleeve is provided with an interface extending to the secondary chamber. A piston body is slidably connected in the main chamber. A spring with a diameter larger than the inner hole of the sealing ring is fixed between the piston body and the sealing ring. Both ends of the sleeve are connected to bearing seats by bearings. A distance measuring sensor is fixed to the outside of the bearing seat near the sealing ring by a bracket. The distance measuring sensor is horizontally oriented towards the inner hole of the sealing ring. The frame includes a set of slide rails, the bottom surface of the bearing seat is provided with a linear module, and the two roller mechanisms are slidably mounted on the two slide rails through the linear module and are distributed perpendicularly to the slide rails. Limit plates are fixed between both ends of the two slide rails. A cylinder is fixed on the outside of the limit plate and distributed parallel to the slide rail. The end of the telescopic rod of the cylinder is fixed to the roller mechanism. An encoder mounting position is fixed at one end of the sleeve body away from the ranging sensor.

[0006] Furthermore, the limiting plate is provided with an installation edge, and the cylinder is fixed on the outside of the installation edge.

[0007] Furthermore, a connecting plate is fixed to the outer side between the two bearing seats of the roller mechanism, and the end of the telescopic rod of the cylinder is fixed to the outer side of the connecting plate.

[0008] Furthermore, both ends of the sleeve body are integrally connected to shaft ends, the shaft ends are hollow end tubes, and the bearing seats are disposed on the shaft ends.

[0009] Furthermore, the bracket has a Z-shaped plate structure and is fixed to the bearing seat by fasteners.

[0010] Furthermore, the width of the bearing housing is smaller than the outer diameter of the sleeve body.

[0011] This utility model has the following beneficial effects: 1. This utility model, by setting up two roller structures and contacting the optical fiber with an air-filled sleeve, ensures that the optical fiber and the rollers are in soft contact, which can protect the surface of the optical fiber. Through the design of piston and spring inside the sleeve, the pressure change inside the air-filled sleeve can be measured by detecting the position of the piston body through a distance sensor. This allows for the determination of the change point of the tapered optical fiber, ensuring the optical fiber drawing effect while improving the detection accuracy.

[0012] 2. Through the design of the frame, this utility model can adjust the distance between the two roller mechanisms, enabling rapid wire threading after the preform is assembled and before stable wire drawing, which facilitates the operation of the staff.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a change point detection device for a tapered optical fiber drawing tower according to the present invention; Figure 2 This is a structural cross-sectional view of a roller mechanism of this utility model; The attached diagram lists the components represented by each number as follows: 1-Frame, 2-Roller mechanism, 3-Encoder mounting position, 101-Slide rail, 102-Linear module, 103-Limit plate, 104-Cylinder, 105-Mounting edge, 201-Sleeve body, 202-Airbag sleeve, 203-Sealing plate, 204-Sealing ring, 205-Main chamber, 206-Secondary chamber, 207-Spacer ring, 208-Interface, 209-Piston body, 210-Spring, 211-Bearing seat, 212-Bracket, 213-Distance sensor, 214-Connecting plate, 215-Shaft end. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-2 As shown, this utility model is a change point detection device for a tapered fiber drawing tower, including a frame 1 and a set of symmetrically arranged roller mechanisms 2; The roller mechanism 2 includes a sleeve body 201, and a hollow cylindrical airbag sleeve 202 is fixed on the periphery of the sleeve body 201. The sleeve body 201 has a sealing plate 203 and a sealing ring 204 at both ends. The sleeve body 201 has a partition ring 207 that divides it into a main chamber 205 and a secondary chamber 206 near the sealing plate 203. The airbag sleeve 202 has an interface 208 extending to the secondary chamber 206 on the inner side. A piston body 209 is slidably connected in the main chamber 205. A spring 210 with a diameter larger than the inner hole of the sealing ring 204 is fixed between the piston body 209 and the sealing ring 204. Both ends of the sleeve body 201 are connected to bearing seats 211 by bearings. A distance sensor 213 is fixed to the outside of the bearing seat 211 near the sealing ring 204 by a bracket 212. The distance sensor 213 is horizontally facing the inner hole of the sealing ring 204. The frame 1 includes a set of slide rails 101, the bottom surface of the bearing seat 211 is provided with a linear module 102, and the two roller mechanism 2 is slidably mounted on the two slide rails 101 through the linear module 102 and is distributed perpendicularly to the slide rails 101. Limiting plates 103 are fixed between the two ends of the two slide rails 101. Cylinders 104 are fixed on the outside of the limiting plates 103 and are distributed parallel to the slide rails 101. The end of the telescopic rod of the cylinders 104 is fixed to the roller mechanism 2. An encoder mounting position 3 is fixed at one end of the sleeve body 201, which is away from the ranging sensor 213.

[0018] Among them, such as Figure 1 As shown, the limiting plate 103 is provided with an installation edge 105, and the cylinder 104 is fixed on the outside of the installation edge 105.

[0019] Among them, such as Figure 1-2 As shown, a connecting plate 214 is fixed on the outer side between the two bearing seats 211 of the roller mechanism 2, and the end of the telescopic rod of the cylinder 104 is fixed to the outer side of the connecting plate 214.

[0020] Among them, such as Figure 1-2 As shown, both ends of the sleeve body 201 are integrally connected to shaft ends 215, which are hollow end tubes, and bearing seats 211 are set on the shaft ends 215.

[0021] Among them, such as Figure 1-2 As shown, bracket 212 has a Z-shaped plate structure and is fixed to bearing seat 211 by fasteners.

[0022] Among them, such as Figure 1 As shown, the width of the bearing housing 211 is smaller than the outer diameter of the sleeve body 201.

[0023] Among them, frame 1 is installed on the drawing tower and is located in front of the coating section.

[0024] The working principle of this utility model is as follows: When the preform is initially drawn into the fiber in the drawing tower, the cylinder 104 is in a retracted state to make way. The optical fiber passes through the two roller mechanisms 2. When the optical fiber is officially drawn, the drive cylinder 104 extends and drives the two roller mechanisms 2 to move relative to each other, clamping the optical fiber between the two airbag sleeves 202. The pressure inside the airbag sleeve 202 is balanced with the elastic force of the spring 210. As the diameter of the optical fiber changes, such as when the diameter increases, it will put pressure on the airbag sleeve 202. After being pressed, the gas inside the airbag sleeve 202 is input into the secondary chamber 206 through the interface 208, thereby pushing the piston 209 to slide in the main chamber 205 and compress the spring 210. The corresponding distance sensor 213 detects the movement of the piston 209, thus indicating that this is a point of change. Similarly, when the optical fiber diameter decreases, the pressure inside the airbag sleeve 202 decreases, and the elastic force provided by the spring 210 drives the piston 209 to move, thereby replenishing the gas in the secondary chamber 206 into the airbag sleeve 202.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for detecting change points in a tapered fiber drawing tower, characterized in that: It includes a frame (1) and a set of symmetrically arranged roller mechanisms (2); The roller mechanism (2) includes a sleeve body (201), and a hollow cylindrical airbag sleeve (202) is fixed on the periphery of the sleeve body (201). The sleeve body (201) has a sealing plate (203) and a sealing ring (204) at both ends. The sleeve body (201) has a partition ring (207) that separates the main chamber (205) and a secondary chamber (206) near the sealing plate (203). The airbag sleeve (202) has an interface (208) extending to the secondary chamber (206) on its inner side. A piston body (209) is slidably connected in the main chamber (205). A spring (210) with a diameter larger than the inner hole of the sealing ring (204) is fixed between the piston body (209) and the sealing ring (204). Both ends of the sleeve body (201) are connected to bearing seats (211) by bearings. A distance sensor (213) is fixed on the outside of the bearing seat (211) near the sealing ring (204) by a bracket (212). The distance sensor (213) is horizontally oriented towards the inner hole of the sealing ring (204). The frame (1) includes a set of slide rails (101), and the bottom surface of the bearing seat (211) is provided with a linear module (102). The two roller mechanisms (2) are slidably arranged on the two slide rails (101) through the linear module (102) and are distributed perpendicularly to the slide rails (101). Limiting plates (103) are fixed between the two ends of the two slide rails (101). A cylinder (104) is fixed on the outside of the limiting plate (103) and is distributed parallel to the slide rail (101). The end of the telescopic rod of the cylinder (104) is fixed to the roller mechanism (2). An encoder mounting position (3) is fixed at one end of the sleeve body (201) away from the ranging sensor (213).

2. The device for detecting change points in a tapered optical fiber drawing tower according to claim 1, characterized in that, The limiting plate (103) is provided with an installation edge (105), and the cylinder (104) is fixed on the outside of the installation edge (105).

3. The device for detecting change points in a tapered fiber drawing tower according to claim 2, characterized in that, A connecting plate (214) is fixed on the outer side between the two bearing seats (211) of the roller mechanism (2), and the end of the telescopic rod of the cylinder (104) is fixed to the outer side of the connecting plate (214).

4. The device for detecting change points in a tapered optical fiber drawing tower according to claim 1, characterized in that, Both ends of the sleeve body (201) are integrally connected to a shaft end (215), the shaft end (215) is a hollow end tube, and the bearing seat (211) is set on the shaft end (215).

5. The device for detecting change points in a tapered optical fiber drawing tower according to claim 1, characterized in that, The bracket (212) is a Z-shaped plate structure, and the bracket (212) is fixed to the bearing seat (211) by fasteners.

6. The device for detecting change points in a tapered optical fiber drawing tower according to claim 1, characterized in that, The width of the bearing housing (211) is smaller than the outer diameter of the sleeve body (201).

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