Hollowed-out sensing optical fiber unit manufacturing system

Abstract

The invention discloses a hollow sensing optical fiber unit manufacturing system which comprises a stainless steel band, a punching machine, a pipe forming die, an optical fiber grating and a laser welding machine. The stainless steel band is located below the punching machine. The punching machine is used for punching the stainless steel band according to the preset punching shape, punching size and punching number; the pipe forming die is used for longitudinally wrapping the punched stainless steel band, curling the stainless steel band in a flat state, molding the stainless steel band into a stainless steel pipe with a circular section, and embedding the fiber grating into the stainless steel pipe; and the laser welding machine is used for welding a pipe body seam of the stainless steel pipe after the fiber bragg grating is embedded into the stainless steel pipe to obtain the hollow-out sensing fiber unit with the hollow-out stainless steel pipe. According to the invention, the sensing precision and response speed of the optical fiber can be improved.

Description

Technical Field

[0001] The present invention relates to the field of sensing optical fiber technology, and in particular to a hollow sensing optical fiber unit manufacturing system. Background Art

[0002] With the continuous expansion of the application scenarios of long-span cables and the surge in demand, ensuring the continuous monitoring of their performance has become a major issue related to structural safety and maintenance efficiency. Cable damage, regardless of the cause, will not only weaken its load-bearing and durability capabilities, but may also suddenly cause catastrophic accidents, especially in the fields of bridge cables and aerial ropeways. Such risks are particularly significant. Although many protective measures have been incorporated into the design, environmental factors, long-term wear of the cables themselves and other factors will still lead to a surge in maintenance costs.

[0003] There is currently an advanced built-in sensing fiber optic unit manufacturing technology, which relies on a stainless steel tube built-in sensing fiber optic unit. The optical fiber is directly placed in a stainless steel tube welded by laser, and a special buffer material is filled in the steel tube. The stainless steel tube and the buffer provide good protection for the optical fiber.

[0004] The packaging structure design of the built-in sensing fiber unit often forms a protective layer. However, while this layer of protection enhances the durability and environmental adaptability of the optical fiber, it may also constitute a "barrier" that hinders the optical fiber from directly and sensitively capturing subtle changes in the external environment. Especially when the changes in external physical quantities are very small and high-precision detection is required, this "barrier" effect will be more significant, making the built-in sensing fiber unit relatively slow in sensing and responding to these subtle changes, thereby affecting its overall monitoring sensitivity. Summary of the invention

[0005] The present invention provides a hollow sensing optical fiber unit manufacturing system to solve the technical problem that in a built-in sensing optical fiber unit, when the optical fiber is directly placed in a stainless steel tube formed by laser welding, the optical fiber will appear relatively slow in sensing and responding to subtle changes, thereby affecting its overall monitoring sensitivity.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a hollow sensing optical fiber unit manufacturing system, including: a stainless steel belt, a punching machine, a tube forming mold, a fiber Bragg grating and a laser welding machine;

[0007] The stainless steel belt is located below the punching machine;

[0008] The punching machine is used to punch holes in the stainless steel strip according to a preset punching shape, punching size and punching quantity;

[0009] The tube forming die is used to longitudinally wrap the punched stainless steel strip, curl and shape the flat stainless steel strip into a stainless steel tube with a circular cross section, and embed the optical fiber Bragg grating into the stainless steel tube;

[0010] The laser welding machine is used to weld the joints of the stainless steel tube after the optical fiber grating is embedded in the stainless steel tube, so as to obtain a hollow sensing optical fiber unit having a hollow stainless steel tube.

[0011] As a preferred solution, the hollow sensing optical fiber unit further includes: a sensing monitoring window;

[0012] The sensor monitoring window is located on the tube wall of the stainless steel tube;

[0013] The sensing monitoring window is used to connect the fiber grating in the stainless steel tube with the external environment, so that the fiber grating can sense the changes of the temperature parameter, humidity parameter, pressure parameter and vibration parameter inside the corresponding cable in real time through the sensing monitoring window.

[0014] As a preferred solution, the punching machine is used to punch the stainless steel strip according to a preset punching shape, punching size and punching quantity, and comprises:

[0015] The punching machine is used to select a corresponding punching die according to a preset punching shape and punching size, and generate the position coordinates of each hole to be punched in the stainless steel strip according to the punching shape, punching size, number of holes and size information of the stainless steel strip, and then punch the stainless steel strip according to the selected punching die and the position coordinates.

[0016] As a preferred solution, the punching die includes: a die depth adjustment module;

[0017] The die depth adjustment module is used to adjust the depth of the punching die according to the size information of the stainless steel strip after selecting the corresponding punching die.

[0018] As a preferred solution, the punching machine further includes: a punching depth adjustment module;

[0019] The punching depth adjustment module is used to obtain the pressing depth of the punch position of the punching machine during the punching process of the punching machine, and compare the pressing depth with the depth of the corresponding punching die. When the pressing depth is less than the depth of the corresponding punching die, the pressing force of the punch of the punching machine is increased to make the pressing depth consistent with the depth of the corresponding punching die.

[0020] As a preferred solution, the laser welding machine is used to weld the joint of the stainless steel tube after the fiber grating is embedded in the stainless steel tube to obtain a hollow sensing optical fiber unit with a hollow stainless steel tube, comprising:

[0021] The laser welding machine is used to generate a laser beam of preset power and a moving path of the laser beam after the fiber grating is embedded in the stainless steel tube, and then control the laser beam to weld the tube body joint of the stainless steel tube according to the moving path to obtain a hollow sensing optical fiber unit with a hollow stainless steel tube.

[0022] As a preferred solution, the laser welding machine comprises: a laser generator;

[0023] The laser generator is used to generate a laser beam of preset power by adjusting the output power.

[0024] As a preferred solution, the laser welding machine further comprises: a laser beam path control module;

[0025] The laser beam path control module is used to generate a moving path for the laser beam, focus the divergent laser beam on the welding point at the joint of the stainless steel pipe body, and control the laser beam to move along the moving path so that the laser beam welds the joint of the stainless steel pipe body.

[0026] As a preferred solution, the laser beam path control module is also used to obtain the real-time path of the laser beam during the welding process, and to correct the real-time path of the laser beam when the real-time path deviates from the moving path.

[0027] As a preferred solution, the tube forming die comprises: a roller;

[0028] The roller is used to longitudinally wrap the punched stainless steel strip and apply a preset uniform pressure to the stainless steel strip so that the stainless steel strip gradually deforms under the uniform pressure and then curls and shapes from a flat state into a stainless steel tube with a circular cross-section.

[0029] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0030] The present invention provides a hollow sensing optical fiber unit manufacturing system, comprising: a stainless steel belt, a punching machine, a tube forming mold, an optical fiber grating and a laser welding machine; the stainless steel belt is located below the punching machine; the punching machine is used to punch the stainless steel belt according to a preset punching shape, punching size and punching quantity; the tube forming mold is used to longitudinally wrap the punched stainless steel belt, curl and shape the flat stainless steel belt into a stainless steel tube with a circular cross-section, and embed the optical fiber grating into the stainless steel tube; the laser welding machine is used to weld the tube body joint of the stainless steel tube after the optical fiber grating is embedded in the stainless steel tube, so as to obtain a hollow sensing optical fiber unit with a hollow stainless steel tube.

[0031] Different from the traditional method of manufacturing a sensing optical fiber unit, which places the optical fiber inside a stainless steel tube, the present invention designs a hollow sensing optical fiber unit manufacturing system, punches holes in a stainless steel strip to form a stainless steel tube with a hollow structure. This hollow structure increases the contact area between the optical fiber in the stainless steel tube and the external environment, so that the optical fiber can more sensitively sense changes in external physical quantities, such as temperature, humidity, pressure, strain, etc. The present invention can improve the sensing accuracy and response speed of the optical fiber, providing a strong guarantee for the accurate measurement of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a hollow-type sensing optical fiber unit manufacturing system provided by one embodiment of the present invention;

[0033] Figure 2 It is a structural schematic diagram of an automated rewinding device. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0036] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0039] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0040] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] Embodiment 1

[0042] Please refer to Figure 1 , is a schematic structural diagram of a hollow type sensing optical fiber unit manufacturing system provided by an embodiment of the present invention, comprising: a stainless steel belt, a punching machine, a tube forming mold, an optical fiber Bragg grating and a laser welding machine;

[0043] The stainless steel belt is located below the punching machine;

[0044] The punching machine is used to punch holes in the stainless steel strip according to a preset punching shape, punching size and punching quantity;

[0045] The tube forming die is used to longitudinally wrap the punched stainless steel strip, curl and shape the flat stainless steel strip into a stainless steel tube with a circular cross section, and embed the optical fiber Bragg grating into the stainless steel tube;

[0046] The laser welding machine is used to weld the joints of the stainless steel tube after the optical fiber grating is embedded in the stainless steel tube, so as to obtain a hollow sensing optical fiber unit having a hollow stainless steel tube.

[0047] Preferably, the hollow sensing optical fiber unit further includes: a sensing monitoring window; the sensing monitoring window is located on the wall of the stainless steel tube; the sensing monitoring window is used to connect the optical fiber Bragg grating in the stainless steel tube with the external environment, so that the optical fiber Bragg grating can sense the changes in the temperature parameters, humidity parameters, pressure parameters and vibration parameters inside the corresponding cable in real time through the sensing monitoring window.

[0048] Specifically, the present invention proposes an innovative hollow structure sensing optical fiber unit manufacturing system and its corresponding process. The core of the present invention is to use sensing optical fiber as the basic material, and through integrated punching technology, continuous laser welding technology and other advanced process means, to create a stainless steel tube sensing optical fiber unit with hollow characteristics.

[0049] The structure diagram of the hollow type sensing optical fiber unit manufacturing system is as follows Figure 1 As shown, in Figure 1 In the figure, 1 is a stainless steel belt, 2 is a tube forming mold, 3 is a fiber grating, 4 is a stainless steel tube, 5 is a sensor monitoring window, 6 is a laser welding machine, and 7 is a precision punching machine.

[0050] The connection relationship of the above components is as follows: the stainless steel strip 1 is located below the precision punching machine 7, the stainless steel strip 1 enters the tube forming mold 2 after laser punching, the tube forming mold 2 wraps the stainless steel strip 1 longitudinally, the optical fiber Bragg grating 3 is put in synchronously, and the laser welding machine 6 welds the middle gap of the longitudinally wrapped steel strip, thereby manufacturing a stainless steel tube (4 and 5) with a sensor monitoring window.

[0051] The functions of the above components are as follows: (1) Stainless steel strip: the main raw material of the stainless steel tube optical fiber unit; (2) Tube forming mold: stainless steel strip longitudinal wrapping molding; (3) Fiber Bragg grating: temperature sensing, strain sensing, pressure sensing (4) Stainless steel tube: a component composed of optical fiber and protective material, which can accommodate optical fiber and protect it from damage caused by environmental changes, external forces, long-term and short-term thermal effects, moisture, etc.; (5) Sensing monitoring window: the stainless steel tube optical fiber unit can provide a more stable and reliable sensing environment, thereby improving sensing accuracy; (6) Laser welding machine: using a high-energy-density laser beam to perform local heating of stainless steel materials in a small area to achieve precise welding; (7) Precision punching machine: the precision punching machine adopts advanced control systems and drive mechanisms, which can achieve high-speed and high-precision punching operations.

[0052] Preferably, the punching machine is used to punch the stainless steel strip according to a preset punching shape, punching size and punching number, including: the punching machine is used to select a corresponding punching die according to the preset punching shape and punching size, and generate the position coordinates of each hole to be punched in the stainless steel strip according to the punching shape, punching size, punching number and size information of the stainless steel strip, and then punch the stainless steel strip according to the selected punching die and the position coordinates.

[0053] Preferably, the punching die comprises: a die depth adjustment module; the die depth adjustment module is used to adjust the depth of the punching die according to the size information of the stainless steel strip after selecting the corresponding punching die.

[0054] Preferably, the punching machine also includes: a punching depth adjustment module; the punching depth adjustment module is used to obtain the pressing depth of the punch position of the punching machine during the punching process of the punching machine, and compare the pressing depth with the depth of the corresponding punching mold. When the pressing depth is less than the depth of the corresponding punching mold, the pressing force of the punch of the punching machine is increased to make the pressing depth consistent with the depth of the corresponding punching mold.

[0055] Specifically, the workflow of the hollow structure sensing optical fiber unit manufacturing system is as follows:

[0056] 1. Mechanical punching manufacturing process: The stainless steel strip is first punched mechanically by a precision punching machine (7). The punching size is precisely set according to the specific design requirements, which can realize the continuous and automatic punching operation of the stainless steel strip. The high-precision transmission device and intelligent control system are adopted to ensure that the stainless steel strip maintains a constant speed and position accuracy during the conveying process. The punching mechanism consists of a high-strength mold and a high-speed moving punch. The mold is carefully designed and precision-machined, with extremely high dimensional accuracy and surface quality, which can ensure that the shape and size of the punching meet strict industrial standards. The control system uses advanced sensor technology and intelligent algorithms, which can monitor various parameters in the punching process in real time, such as the position, speed, impact force, etc. of the punch, and make precise adjustments according to the preset program. This not only ensures the accuracy and quality of the punching, but also improves the working efficiency and stability of the punching machine.

[0057] The mold of the precision punching machine (7) is manufactured using high-precision CNC processing technology to achieve hollow punching of multiple holes and multiple shapes (circular, square, rectangular, hexagonal, spiral, wavy, grid, etc.). The precise control of the multiple holes relies on an advanced CNC system. The position coordinates of each punching hole can be accurately planned according to the preset program. Through high-precision sensors and precise transmission devices, it is ensured that the punch of the punching machine can move to the specified position accurately. Whether it is a complex array-type multi-hole layout or an irregular dispersed multi-hole distribution, the CNC system can achieve precise control of each punching position with its excellent computing power and precise control performance.

[0058] For punching holes of different shapes, the key lies in the design of replaceable dies. Through careful design and precision machining, various shapes of punching holes can be presented. When punching holes of different shapes is required, the shape can be switched by quickly replacing the corresponding dies. These dies are made of high-strength materials, and after precision machining and heat treatment, they have extremely high dimensional accuracy and durability. At the same time, with the advanced die positioning system, the die is ensured to always maintain a stable position during the punching process, thereby ensuring the accuracy of the punching shape.

[0059] At the same time, the mold is also equipped with an automatic adjustment mechanism, which can automatically adjust the punching position and depth according to the different sizes of stainless steel pipes. When the stainless steel pipe enters the working area of ​​the punching machine, a high-precision dimension measurement sensor will first accurately measure the key dimensions of the stainless steel pipe, such as the outer diameter and length. After receiving the data fed back by the sensor, the intelligent control system will perform complex calculations based on the pre-set mathematical model and punching process requirements. It will regard the stainless steel pipe as a geometric body in a three-dimensional space and determine the coordinates of the punching position by analyzing the size of the pipe body.

[0060] For automatic adjustment of the punching depth, the punching machine is equipped with a depth sensor, which will monitor the pressing depth of the punch position in real time. The sensor will compare the actual punching depth with the preset depth. If the actual punching depth is less than the preset depth, the control system will increase the downward force of the punch until the preset depth is reached.

[0061] The precision punching machine (7) performs laser punching operations on the surface of the stainless steel strip (1) with extremely high accuracy and uniformity. For application scenarios that require higher mechanical strength and a small number of optical fibers, the hole diameter can be relatively small, usually between 1 mm and 3 mm. This size not only ensures the mechanical stability of the stainless steel tube, but also allows the optical fibers to have enough space in the hole for arrangement. For general application scenarios, the hole diameter can be selected between 3 mm and 5 mm. The hole size within this range is suitable for the arrangement requirements of most optical fibers and can maintain good sensing sensitivity and mechanical strength. In application scenarios that require higher sensing sensitivity or special optical fiber arrangement methods, the hole diameter can be appropriately increased to more than 5 mm.

[0062] The layout of these holes has been carefully designed, not only taking into account the subsequent installation requirements of the fiber grating (3), but also ensuring the structural stability of the stainless steel strip during the forming process. After punching, the surface of the stainless steel strip is covered with fine holes, laying a solid foundation for the subsequent steps.

[0063] Preferably, the tube forming die comprises: a roller; the roller is used to longitudinally wrap the punched stainless steel strip and apply a preset uniform pressure to the stainless steel strip so that the stainless steel strip gradually deforms under the uniform pressure, and then curls and shapes from a flat state into a stainless steel tube with a circular cross-section.

[0064] 2. The punched stainless steel strip (1) is fed into a tube forming die (2). The die uses advanced rolling technology to apply uniform pressure to the stainless steel strip through a series of precisely controlled rollers, causing it to gradually deform, curl and shape from a flat state into a tubular structure with a circular cross-section (4). In this process, the rolling process of the die ensures the uniformity and smoothness of the tube wall, providing an important guarantee for the quality of the final product.

[0065] Preferably, the laser welding machine is used to weld the tube body seams of the stainless steel tube after the optical fiber Bragg grating is embedded in the stainless steel tube to obtain a hollow sensing optical fiber unit with a hollow stainless steel tube, comprising: the laser welding machine is used to generate a laser beam of preset power and a moving path of the laser beam after the optical fiber Bragg grating is embedded in the stainless steel tube, and then control the laser beam to weld the tube body seams of the stainless steel tube according to the moving path to obtain a hollow sensing optical fiber unit with a hollow stainless steel tube.

[0066] Preferably, the laser welding machine comprises: a laser generator; the laser generator is used to generate a laser beam of preset power by adjusting the output power.

[0067] Preferably, the laser welding machine also includes: a laser beam path control module; the laser beam path control module is used to generate a moving path of the laser beam, focus the divergent laser beam on the welding point at the joint of the stainless steel pipe body, and control the laser beam to move along the moving path so that the laser beam welds the joint of the stainless steel pipe body.

[0068] Preferably, the laser beam path control module is also used to obtain the real-time path of the laser beam during the welding process, and to correct the real-time path of the laser beam when the real-time path deviates from the moving path.

[0069] 3. The formed stainless steel pipe is sent to the laser welding equipment (6), which uses a high-energy-density laser beam to quickly and accurately weld the pipe joints, achieving a seamless welding effect. Laser welding not only has the advantages of narrow welds, small heat-affected zones, and small deformation, but also greatly improves welding efficiency and product quality.

[0070] Specifically, after punching, the stainless steel strip is then accurately wound into a disc by an automated rewinding device. The structural schematic diagram of the automated rewinding device is shown in FIG. Figure 2 As shown, it then enters the laser welding process synchronously with the sensing optical fiber. By precisely controlling the energy and path of the laser beam, efficient and precise welding of the stainless steel tube optical fiber unit with a hollow pattern is achieved. The control of the laser beam energy is first determined by the laser generator, and the energy of the laser beam is controlled by adjusting its output power. In terms of controlling the laser beam path, the optical focusing system focuses the originally divergent laser beam on the welding point through a series of lens combinations. The scanning system can accurately change the direction of the laser beam. This system usually includes a galvanometer and a motor. The galvanometer can swing quickly and the motor can be driven accurately. The two cooperate to allow the laser beam to move along a pre-programmed path to ensure that the laser is accurately irradiated at the position where welding is required. In addition, during the welding process, the path of the laser beam can be corrected in real time through the computer control system and sensor feedback. Even if there is a slight vibration or change in the position of the workpiece during the welding process, it can ensure that the laser beam falls accurately on the welding area. This process not only retains the excellent performance of the stainless steel strip itself, but also gives the hollow sensing optical fiber unit a unique structure and function to meet the needs of specific application scenarios.

[0071] The formed stainless steel pipe is sent to the laser welding equipment (6). The equipment uses a high energy density laser beam to perform rapid and accurate welding at the pipe body joints, achieving a seamless welding effect. Laser welding not only has the advantages of narrow welds, small heat-affected zones, and small deformation, but also greatly improves welding efficiency and product quality.

[0072] It can be seen that the present invention provides a hollow sensing optical fiber unit manufacturing system. The hollow structure of the present invention increases the contact area between the optical fiber and the external environment, so that the optical fiber can more sensitively sense changes in external physical quantities, such as temperature, humidity, pressure, strain, etc. The sensing accuracy and response speed are improved, providing a strong guarantee for accurate measurement. The online punching technology can directly perform punching operations during the production process without the need for additional steps. The online punching technology is seamlessly integrated with the production process of the stainless steel tube optical fiber unit to improve production efficiency. Through a high-precision positioning system and an optimized punching process, precise punching operations can be achieved to ensure the size accuracy and position accuracy of the hole. The hollow stainless steel tube optical fiber unit reduces the overall weight to a certain extent without affecting its mechanical strength, making it suitable for various complex application scenarios, such as structural health monitoring, power communications, etc.

[0073] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A hollow type sensing optical fiber unit manufacturing system, characterized in that: include: Stainless steel strips, punching machines, tube forming dies, fiber grating and laser welding machines; The stainless steel belt is located below the punching machine; The punching machine is used to punch holes in the stainless steel strip according to a preset punching shape, punching size and punching quantity; The tube forming die is used to longitudinally wrap the punched stainless steel strip, curl and shape the flat stainless steel strip into a stainless steel tube with a circular cross section, and embed the optical fiber Bragg grating into the stainless steel tube; The laser welding machine is used to weld the joints of the stainless steel tube after the optical fiber grating is embedded in the stainless steel tube, so as to obtain a hollow sensing optical fiber unit having a hollow stainless steel tube.

2. The hollow type sensing optical fiber unit manufacturing system according to claim 1, characterized in that: The hollow-out sensing optical fiber unit further includes: a sensing monitoring window; The sensor monitoring window is located on the tube wall of the stainless steel tube; The sensing monitoring window is used to connect the fiber grating in the stainless steel tube with the external environment, so that the fiber grating can sense the changes of the temperature parameter, humidity parameter, pressure parameter and vibration parameter inside the corresponding cable in real time through the sensing monitoring window.

3. The hollow type sensing optical fiber unit manufacturing system according to claim 1, characterized in that: The punching machine is used to punch holes in the stainless steel strip according to a preset punching shape, punching size and punching quantity, and comprises: The punching machine is used to select a corresponding punching die according to a preset punching shape and punching size, and generate the position coordinates of each hole to be punched in the stainless steel strip according to the punching shape, punching size, number of holes and size information of the stainless steel strip, and then punch the stainless steel strip according to the selected punching die and the position coordinates.

4. The hollow type sensing optical fiber unit manufacturing system according to claim 3, characterized in that: The punching die comprises: a die depth adjustment module; The die depth adjustment module is used to adjust the depth of the punching die according to the size information of the stainless steel strip after selecting the corresponding punching die.

5. The hollow type sensing optical fiber unit manufacturing system according to claim 4, characterized in that: The punching machine further includes: a punching depth adjustment module; The punching depth adjustment module is used to obtain the pressing depth of the punch position of the punching machine during the punching process of the punching machine, and compare the pressing depth with the depth of the corresponding punching die. When the pressing depth is less than the depth of the corresponding punching die, the pressing force of the punch of the punching machine is increased to make the pressing depth consistent with the depth of the corresponding punching die.

6. The hollow type sensing optical fiber unit manufacturing system according to claim 1, characterized in that: The laser welding machine is used to weld the joint of the stainless steel tube after the optical fiber grating is embedded in the stainless steel tube to obtain a hollow sensing optical fiber unit with a hollow stainless steel tube, comprising: The laser welding machine is used to generate a laser beam of preset power and a moving path of the laser beam after the fiber grating is embedded in the stainless steel tube, and then control the laser beam to weld the tube body joint of the stainless steel tube according to the moving path to obtain a hollow sensing optical fiber unit with a hollow stainless steel tube.

7. The hollow type sensing optical fiber unit manufacturing system according to claim 6, characterized in that: The laser welding machine comprises: a laser generator; The laser generator is used to generate a laser beam of preset power by adjusting the output power.

8. The hollow type sensing optical fiber unit manufacturing system according to claim 7, characterized in that: The laser welding machine further includes: a laser beam path control module; The laser beam path control module is used to generate a moving path for the laser beam, focus the divergent laser beam on the welding point at the joint of the stainless steel pipe body, and control the laser beam to move along the moving path so that the laser beam welds the joint of the stainless steel pipe body.

9. The hollow type sensing optical fiber unit manufacturing system according to claim 8, characterized in that: The laser beam path control module is also used to obtain the real-time path of the laser beam during the welding process, and to correct the real-time path of the laser beam when the real-time path deviates from the moving path.

10. The hollow type sensing optical fiber unit manufacturing system according to claim 1, characterized in that: The tube forming die comprises: a roller; The roller is used to longitudinally wrap the punched stainless steel strip and apply a preset uniform pressure to the stainless steel strip so that the stainless steel strip gradually deforms under the uniform pressure and then curls and shapes from a flat state into a stainless steel tube with a circular cross-section.

Images