A PMMA plastic optical fiber tapering technique
By using vertical and horizontal guide rail mechanisms in conjunction with heating tanks and heat transfer oil, the problems of temperature control and diameter uniformity during the tapering process of plastic optical fibers are solved, thus achieving uniform tapering of plastic optical fibers and ensuring the optical performance of the target size.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN YOUSHI OPHTHALMOLOGY TECH CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-29
AI Technical Summary
The tapering of plastic optical fibers is difficult, mainly due to the influence of PMMA material, which has a low melting temperature and is sensitive to temperature. It is difficult to maintain the uniformity of the diameter during the stretching process, resulting in uneven light guiding performance.
A vertical guide rail mechanism and a horizontal guide rail mechanism are used in conjunction with a heating tank. The plastic optical fiber is heated by heat-conducting oil, and the plastic optical fiber is stretched uniformly by the axial movement of the left and right optical fiber clamps. Temperature and movement speed are controlled to ensure optical performance.
This method achieves uniform thinning of plastic optical fibers, ensuring that the fibers maintain good light guiding performance at the target size, and solves the difficult problems in the tapering process of plastic optical fibers.
Smart Images
Figure CN224303882U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical fiber taper technology, and more specifically, to a PMMA plastic optical fiber taper technology. Background Technology
[0002] Currently, PMMA plastic optical fiber (hereinafter referred to as plastic optical fiber) is widely used in various fields due to its unique physical properties. However, the processing technology of plastic optical fiber has been rarely studied, especially the tapering technology. Thinning plastic optical fiber has significant practical implications. Ultra-thin plastic optical fiber plays an irreplaceable role in communication, sensing, and medical fields. Especially in the medical and medical imaging fields, plastic optical fiber possesses unparalleled flexibility and ductility compared to quartz optical fiber, making it safer and more reliable inside the human body.
[0003] Similar to fused silica fiber taper technology, tapering softens plastic optical fibers by heating them while applying axial tension to thin and lengthen them, thereby reducing the outer diameter of the plastic fiber. However, due to the influence of PMMA material, tapering plastic optical fibers is very difficult, mainly for the following reasons: First, plastic optical fibers have a low melting temperature but are sensitive to temperature; excessively high or low temperatures are detrimental to tapering. Second, plastic optical fibers are easily deformed under tension, and it is difficult to maintain diameter uniformity during the stretching process. Third, high temperature consistency is required; during tapering, excessive temperature differences at various points in the hot zone can easily lead to uneven diameter of the taper region of the plastic optical fiber, thus losing its light-guiding performance. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a PMMA plastic optical fiber tapering technology to solve the problem that the tapering of plastic optical fibers is very difficult due to the influence of PMMA material in the prior art.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a PMMA plastic optical fiber taper technology, including...
[0006] Vertical guide rail mechanism;
[0007] A horizontal guide rail mechanism is provided, wherein the surface of the back side of the middle part of the horizontal guide rail mechanism is fixedly installed with the surface of the vertical guide rail mechanism, and a left fiber optic clamp and a right fiber optic clamp are movably installed on the outer surface of the horizontal guide rail mechanism, and the left fiber optic clamp and the right fiber optic clamp are symmetrically arranged.
[0008] The heater has a heating tank fixedly installed on its upper surface. The heating tank is electrically connected to the heater, and the interior of the heating tank is filled with heat-conducting oil.
[0009] Preferably, the heater heats the heat-conducting oil inside the heating tank at a temperature range of 140-150℃, the vertical guide rail mechanism moves at a speed of 100-300mm / s, the horizontal guide rail mechanism moves at a speed of 100-300mm / s, and the left and right fiber optic clamps extend into the heat-conducting oil inside the heating tank to a depth of 20-50mm.
[0010] Preferably, the assembly also includes a processing chassis and a fixed back plate. The inner wall of one side of the back of the processing chassis is fixedly installed with the side of the fixed back plate, and the side of the fixed back plate away from the back of the processing chassis is fixedly installed with the side of the vertical guide rail mechanism away from the horizontal guide rail mechanism.
[0011] Preferably, the bottom ends of both the left and right fiber clamps are fixedly equipped with clamping and fixing mechanisms for plastic optical fibers, and the width of the clamping and fixing mechanisms is smaller than the gap size of the transverse groove opened in the middle of the heating tank.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] In the above scheme, by setting up a vertical guide rail mechanism, a horizontal guide rail mechanism, a left fiber clamp, and a right fiber clamp, this technology uses the liquid inside the heating tank to heat the plastic optical fiber. The plastic optical fiber is fixed to the bottom of the left and right fiber clamps installed on the horizontal guide rail mechanism, which can move axially at a uniform speed, so that the optical fiber is kept taut. Then, the vertical guide rail mechanism controls the horizontal guide rail mechanism and the left and right fiber clamps and the plastic optical fiber fixed at their bottom ends to move downward until they pass through the heating tank and are submerged in the heating liquid. By using the relative movement of the two clamps away from each other, the plastic optical fiber is stretched, thinned and lengthened, so that the plastic optical fiber can be tapered. And while ensuring the optical performance of the optical fiber, the optical fiber is thinned to the target size. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the vertical guide rail mechanism of this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the left fiber optic clamp and right fiber optic clamp of this utility model.
[0017] [Figure Labels]
[0018] 1. Processing chassis; 2. Fixed back plate; 3. Vertical guide rail mechanism; 4. Horizontal guide rail mechanism; 5. Left fiber optic clamp; 6. Right fiber optic clamp; 7. Heater; 8. Heating tank. Detailed Implementation
[0019] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.
[0020] As attached Figure 1 To be continued Figure 3 An embodiment of this utility model provides a PMMA plastic optical fiber tapering technology, including...
[0021] Vertical guide rail mechanism 3;
[0022] The horizontal guide rail mechanism 4 has its back side surface fixedly installed with the surface of the vertical guide rail mechanism 3. The outer surface of the horizontal guide rail mechanism 4 is movably installed with a left fiber optic clamp 5 and a right fiber optic clamp 6, which are symmetrically arranged.
[0023] Heater 7, with a heating tank 8 fixedly installed on the upper surface of the top of heater 7, the heating tank 8 being electrically connected to heater 7, and the interior of heating tank 8 being filled with heat-conducting oil.
[0024] Preferably, the heater 7 heats the heat transfer oil inside the heating tank 8 at a temperature range of 140-150℃, the vertical guide rail mechanism 3 moves at a speed of 100-300mm / s, the horizontal guide rail mechanism 4 moves at a speed of 100-300mm / s, and the left fiber optic clamp 5 and the right fiber optic clamp 6 extend into the heat transfer oil inside the heating tank 8 to a depth of 20-50mm.
[0025] Preferably, the assembly also includes a processing chassis 1 and a fixed back plate 2. The inner wall of the back side of the processing chassis 1 is fixedly installed to the side of the fixed back plate 2, and the side of the fixed back plate 2 away from the back side of the processing chassis 1 is fixedly installed to the side of the vertical guide rail mechanism 3 away from the horizontal guide rail mechanism 4.
[0026] Preferably, the bottom ends of the left fiber clamp 5 and the right fiber clamp 6 are both fixedly equipped with clamping and fixing mechanisms for plastic optical fibers, and the width of the clamping and fixing mechanism is smaller than the gap size of the transverse groove opened in the middle of the heating tank 8.
[0027] The working process of this utility model is as follows:
[0028] As shown in the attached diagram, firstly, the initial spacing between the left fiber clamp 5 and the right fiber clamp 6 is determined according to the required length and diameter of the plastic tapered rod. Then, the two ends of the PMMA plastic fiber are sequentially fixed inside the clamping and fixing mechanisms at the bottom of the left fiber clamp 5 and the right fiber clamp 6. The distance between the two symmetrically arranged left fiber clamps 5 and right fiber clamps 6 is adjusted by the horizontal guide rail mechanism 4 to keep the PMMA plastic fiber taut. After that, the vertical guide rail mechanism 3 is controlled to drive the surface-mounted horizontal guide rail mechanism 4 to move downward. During this process, the left fiber clamp 5 and right fiber clamp 6 mounted on the surface of the horizontal guide rail mechanism 4 and the PMMA plastic fiber fixed at the bottom gradually pass through the gap in the middle of the heating tank 8, extend into the interior of the heating tank 8 containing heat-conducting oil, and are submerged in the heat-conducting oil. After that, the left fiber clamp 5 and right fiber clamp 6 on the horizontal guide rail mechanism 4 are controlled to move axially and move away from each other to stretch the PMMA plastic fiber at the bottom. Finally, after the stretching is completed, the vertical guide rail mechanism 3 is controlled to remove the optical fiber from the heating oil, thereby completing the plastic optical fiber tapering operation. Under the premise of ensuring the optical performance of the optical fiber, the optical fiber is drawn thin to the target size.
[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0030] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A PMMA plastic optical fiber tapering technology, characterized in that, include Vertical guide rail mechanism (3); A horizontal guide rail mechanism (4) is fixedly installed on the surface of the back side of the middle part of the horizontal guide rail mechanism (4) and the surface of the vertical guide rail mechanism (3). A left fiber optic clamp (5) and a right fiber optic clamp (6) are movably installed on the outer surface of the horizontal guide rail mechanism (4). The left fiber optic clamp (5) and the right fiber optic clamp (6) are symmetrically arranged. Heater (7), a heating groove (8) is fixedly installed on the upper surface of the top of the heater (7), the heating groove (8) is electrically connected to the heater (7), and the interior of the heating groove (8) is filled with heat-conducting oil.
2. The PMMA plastic optical fiber taper technology according to claim 1, characterized in that, The heater (7) heats the heat-conducting oil inside the heating tank (8) at a temperature range of 140-150℃. The vertical guide rail mechanism (3) moves at a speed of 100-300mm / s. The horizontal guide rail mechanism (4) moves at a speed of 100-300mm / s. The left fiber clamp (5) and the right fiber clamp (6) extend into the heat-conducting oil inside the heating tank (8) to a depth of 20-50mm.
3. The PMMA plastic optical fiber tapering technology according to claim 1, characterized in that, It also includes a processing chassis (1) and a fixed back plate (2). The inner wall of the back side of the processing chassis (1) is fixedly installed with the side of the fixed back plate (2). The side of the fixed back plate (2) away from the back side of the processing chassis (1) is fixedly installed with the side of the vertical guide rail mechanism (3) away from the horizontal guide rail mechanism (4).
4. The PMMA plastic optical fiber tapering technology according to claim 1, characterized in that, The bottom ends of the left fiber clamp (5) and the right fiber clamp (6) are both fixedly equipped with clamping and fixing mechanisms for plastic optical fibers, and the width range of the clamping and fixing mechanism is smaller than the gap size of the horizontal groove opened in the middle of the heating tank (8).