Optical cable preform surface treatment equipment

Abstract

The utility model relates to surface treatment equipment, and provides optical cable preform surface treatment equipment which comprises a barrel body, a barrel cover, a film material inlet pipe, a hot flow inlet pipe, a film material outlet pipe, a hot flow outlet pipe, an airflow inlet pipe, a hanging piece and the like, a cylinder cover is rotatably arranged at the front part of the cylinder body, when the cylinder cover is closed, a closed processing space is formed in the cylinder body, an airflow inlet pipe is arranged at the lower part of the cylinder body in a penetrating manner, a film material inlet pipe and a hot flow inlet pipe are respectively arranged at the upper and lower sides of the rear part of the cylinder body, and a hot flow outlet pipe and a film material outlet pipe are respectively arranged at the left and right sides of the upper part of the cylinder body; a notch is formed in the front end of the hanging piece. According to the optical fiber preform surface treatment device, the closed machining space is arranged, various conditions required by optical fiber preform surface treatment are orderly provided in the machining space, the machining steps such as deposition treatment, high-temperature melting shrinkage and surface polishing are sequentially completed, the machining steps do not need to be completed in different devices respectively, and the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a surface treatment device, and more particularly to a surface treatment device for optical cable preforms. Background Technology

[0002] Optical fiber preforms are the parent material used to produce optical fibers, and their surface quality has a significant impact on the fiber drawing performance. During the fiber drawing process, extremely high requirements are placed on the cleanliness and smoothness of the preform surface.

[0003] Before fiber drawing, optical fiber preforms require surface treatment, primarily focusing on cleaning and polishing to optimize their surface quality. Specific steps typically include deposition processing, high-temperature melting and shrinking, and surface polishing. These steps reduce surface contamination and improve smoothness, thereby optimizing fiber drawing performance and ensuring the production of high-quality optical fiber products. However, in current industrial production, these processes involve multiple surface treatment techniques and related equipment to ensure the cleanliness and smoothness of the preform surface. This means these steps must be completed in different processing equipment, increasing material transfer and waiting time between multiple stations, reducing overall production efficiency, and while each station requires quality control, differences between stations can increase the difficulty of quality control. Utility Model Content

[0004] To overcome the shortcomings of existing processing steps that require multiple surface treatment processes and related equipment to ensure the cleanliness and smoothness of the preform surface, which means that these steps must be completed in different processing equipment, the material transfer and waiting time between multiple stations will increase, the overall production efficiency will decrease, and each station needs to perform quality control, but the differences between stations may increase the difficulty of quality control. The purpose of this utility model is to provide a surface treatment equipment for optical cable preforms that integrates multiple processing steps.

[0005] The technical implementation scheme of this utility model is as follows: A surface treatment device for optical cable preforms includes a cylinder, a cylinder cover, a film material inlet pipe, a hot flow inlet pipe, a film material outlet pipe, a hot flow outlet pipe, an airflow inlet pipe, a hanging component, a coating core cylinder, a support component, a fixing block one, a sliding block, a spring, a rotating block, a fixing block two, and a top rod. The cylinder cover is rotatably mounted at the front of the cylinder. When the cover is closed, it forms a closed processing space with the inside of the cylinder. An airflow inlet pipe passes through the lower part of the cylinder. Film material inlets and hot flow inlets are respectively located on the upper and lower sides of the rear of the cylinder. Hot flow outlet pipes and film material outlet pipes are respectively located on the left and right sides of the upper part of the cylinder. A polishing mechanism is provided on the cylinder wall. A hanging component is provided on the upper inner side of the cylinder. The front end of the hanging component has a notch. A coating core cylinder is hung on the hanging component. The coating core cylinder consists of a hollow mesh cylinder, a shaft, and a support component located on the upper part of the shaft. Its interior is hollow. The coating core cylinder is supported by the top support. The component contacts the hanging component. The support component has a bearing inside. The inner ring of the bearing is connected to the shaft at the top of the coating core cylinder. Through the bearing, the coating core cylinder can rotate on the hanging component. A fixing block 1 is provided on the lower outer side of the coating core cylinder. Multiple fixing blocks 1 are evenly spaced. A sliding block is provided in the fixing block 1. A rotating block is provided on the top of the sliding block. A spring is provided at the bottom of the sliding block. The two ends of the spring are connected to the fixing block 1 and the bottom of the sliding block, respectively. The upper part of the coating core cylinder has a fixing block 2 with the same number of fixing blocks 1. The fixing blocks 2 are arranged in a one-to-one correspondence with the fixing blocks 1. A top rod is provided in the fixing block 2. The top rods in the fixing block 2 are all in a concentric position with the sliding rod of the fixing block 1 below. The space between the top rod and the sliding block is used to vertically place the preform. The coating core cylinder and the preform between the top rod and the sliding block are all driven to rotate by a rotation auxiliary mechanism.

[0006] Furthermore, the rotating auxiliary mechanism includes a first rotating wheel, a friction plate, a second rotating wheel, a motor, and a third rotating wheel. The second rotating wheel is fixedly installed at the upper end of the shaft of the coating core cylinder. A motor is installed at the top of the cylinder, and the output shaft of the motor extends vertically downward into the cylinder. The third rotating wheel is installed at the end of the output shaft of the motor. The third rotating wheel is in contact with the second rotating wheel. The motor drives the second rotating wheel to rotate, which in turn drives the third rotating wheel to rotate, thereby driving the coating core cylinder to rotate within the cylinder. Each of the two fixed blocks is equipped with a first rotating wheel, and each first rotating wheel is connected to a top rod on the same two fixed block. A friction plate is installed on the inner wall of the cylinder near the upper part of the polishing mechanism. The friction plate is arc-shaped. As the first rotating wheel rotates with the coating core cylinder, it will contact the friction plate, causing the first rotating wheel to rotate, thereby driving the top rod to rotate.

[0007] Furthermore, the polishing mechanism includes a flame generator, a connecting pipe, a spray module, and nozzles. A flame generator is vertically installed on one side of the cylinder wall, and one side of the flame generator extends into the cylinder. An inner groove is opened on this side, and a spray module is vertically installed in the inner groove. A connecting pipe is installed on the other side of the flame generator. Multiple nozzles are evenly spaced on the spray module, and all nozzles face the coating core cylinder.

[0008] Furthermore, it also includes a cylinder, a heat shield, and a baffle. A cylinder is provided on the side of the flame generator that penetrates the cylinder body, a heat shield is provided on the outside of the cylinder, and a baffle is provided on the moving rod of the cylinder. The baffle is in sliding contact with the flame generator. When the moving rod of the cylinder is fully extended, the baffle will completely close the opening of the inner groove.

[0009] Furthermore, it also includes a support plate and ball bearings. The bottom of the cylinder is provided with a support plate and several ball bearings. When the coating core cylinder is hung on the hanger, its bottom will contact the ball bearings.

[0010] Furthermore, a groove is provided in the lower part of the fixed block, and a circular block is provided in the lower part of the sliding block to cover the lower end of the groove. The spring is arranged in the groove of the fixed block.

[0011] Furthermore, it also includes a transparent window, which is provided on the cylinder cover.

[0012] This invention has the following advantages: By setting up a closed processing space, this invention provides various conditions required for the surface treatment of optical fiber preforms in an orderly manner within this processing space, and sequentially completes processing steps such as deposition treatment, high-temperature melting and shrinking, and surface polishing. These processing steps do not need to be completed separately in different equipment, which improves processing efficiency, reduces the transfer time and cost between equipment, and also ensures close connection and quality control between each processing link, thereby effectively guaranteeing the final quality and performance consistency of the optical fiber preforms.

[0013] This invention incorporates a support plate and ball bearings inside the cylinder. The bottom of the coating core cylinder 4 is in close contact with these ball bearings. The presence of the ball bearings not only reduces the friction when the coating core cylinder rotates, but also allows the coating core cylinder to slide through the ball bearings on the support plate when hanging and taking it out. This facilitates labor-saving operation and makes it easier to connect to automatic material handling equipment, thereby improving the applicability and automation of the equipment.

[0014] In the preform deposition process and high-temperature melting and shrinkage process, this invention uses a shielding plate to cover the main processing components on the flame generator, thereby reducing the impact of other processing steps on them. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the first part of this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of the second part of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the coating core cylinder and its components of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the fixed block, sliding block, and spring of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the concealed coating core cylinder and its components according to this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the polishing mechanism and protective mechanism of this utility model.

[0021] Figure 7 This is a three-dimensional structural diagram of the motor and the three-wheeled wheel of this utility model.

[0022] In the attached diagrams: 1: Cylinder body, 2: Cylinder cover, 21: Film material inlet pipe, 22: Hot flow inlet pipe, 23: Film material outlet pipe, 24: Hot flow outlet pipe, 25: Airflow inlet pipe, 3: Hanging component, 4: Coating core cylinder, 41: Support component, 42: Fixed block one, 421: Sliding block, 422: Spring, 423: Rotating block, 43: Fixed block two, 431: Top rod, 5: Rotating wheel one, 51: Friction plate, 52: Rotating wheel two, 53: Motor, 54: Rotating wheel three, 6: Transparent window, 7: Flame generator, 71: Connecting pipe, 72: Spray module, 73: Nozzle, 8: Cylinder, 81: Heat insulation cover, 82: Blinding plate, 9: Support plate, 91: Ball bearing. Detailed Implementation

[0023] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Example 1: A surface treatment device for optical cable preforms, such as... Figure 1-4 As shown, the cylinder 1 and the rotatable cap 2 together form a closed processing space, providing a stable environment for the processing of preforms and providing the necessary conditions for subsequent deposition, melting and polishing steps. At the lower part of the cylinder 1, the airflow inlet pipe 25 penetrates in and is used to connect the external airflow to the inside of the cylinder 1, promoting the airflow circulation inside the cylinder 1. This not only regulates the temperature distribution but also promotes the uniform transfer of film material and heat. At the rear of the cylinder 1, the film material inlet pipe 21 and the heat flow inlet pipe 22 are located on the upper and lower sides, respectively. They are responsible for introducing the deposition material and the high-temperature airflow, respectively. Correspondingly, at the upper part of the cylinder 1, the heat flow outlet pipe 24 and the film material outlet pipe 23 are located on the left and right sides, respectively, for discharging waste film material and heat.

[0025] The upper inner side of the cylinder 1 is provided with a hanging member 3, which has a notch at the front end for securely hanging the coating core cylinder 4. The coating core cylinder 4 is composed of a hollow mesh cylinder, a shaft, and a support member 41. Its interior is hollow and can contact the hanging member 3 through the support member 41 at the top. The support member 41 has a bearing embedded in it, which allows the coating core cylinder 4 to rotate freely on the hanging member 3. Multiple fixing blocks 42 are evenly distributed on the lower outer side of the coating core cylinder 4. Each fixing block 42 has a sliding block 421. The top of the sliding block 421 is provided with a rotating block 423, and the bottom is provided with a spring 422 to provide stability. For elastic support, a second fixing block 43 is provided on the upper part of the coating core cylinder 4, which is the same number as the first fixing block 42. They are in a one-to-one correspondence with the first fixing block 42. A top rod 431 is rotatably provided in the second fixing block 43, which is used to clamp the preform rod together with the sliding block 421 below. The preform rod does not contact the coating core cylinder 4. A groove is opened in the lower part of the first fixing block 42. A round block is provided at the lower part of the sliding block 421 to cover the lower end of the groove. The spring 422 is arranged in the groove of the first fixing block 42. When not processed, the spring 422 is stably installed in the groove, and the intrusion of external impurities is also prevented.

[0026] To drive the rotation of the coating core cylinder 4 and the preform inside it, the equipment incorporates a rotational auxiliary mechanism, such as... Figure 1-6 As shown, it includes a first rotating wheel 5, a friction plate 51, a second rotating wheel 52, a motor 53, and a third rotating wheel 54. The upper end of the shaft of the coating core cylinder 4 is fixed with the second rotating wheel 52, while the top of the cylinder 1 is provided with a motor 53. The output shaft of the motor 53 is vertically inserted into the cylinder 1, and the third rotating wheel 54 is provided at its end. Rotating wheel 3 54 and rotating wheel 2 52 are in contact with each other. Driven by motor 53, rotating wheel 2 52 starts to rotate, which in turn drives rotating wheel 3 54 to rotate, thereby driving the coating core cylinder 4 to rotate inside the cylinder 1. At the same time, rotating wheel 1 5 on fixed block 2 43 is connected to the top rod 431 on the same fixed block 2 43. When rotating wheel 1 5 rotates with the coating core cylinder 4, it will contact the arc-shaped friction plate 51 on the inner wall of the cylinder 1. Through friction, rotating wheel 1 5 rotates, which in turn drives the top rod 431 to rotate, realizing the double rotation of the preform. The automatic rotation of the coating core cylinder 4 and its internal preform is realized through the rotation auxiliary mechanism, which greatly reduces the burden of manual operation, while ensuring the uniformity and controllability of the rotation speed.

[0027] Specifically, during processing, the air inlet pipe 25 not only circulates the air inside the cylinder but also helps regulate the temperature distribution within the processing space, preventing localized overheating and ensuring uniform heating of the preform. This is crucial for maintaining consistent material properties. The design of the hanger 3 allows the coating core cylinder 4 to be stably suspended and rotate freely. This not only facilitates the batch loading and unloading of the preform but also ensures uniform heating and film deposition throughout the process. Furthermore, the contact between the rotating wheel 5 and the friction plate 51 utilizes friction to drive the top rod 431 to rotate, thereby achieving dual rotation of the preform without adding an additional power source. This further enhances the uniformity and efficiency of surface treatment, improving processing efficiency and finished product quality.

[0028] In addition, such as Figure 2 , Figure 6 and Figure 7 As shown, a polishing mechanism is also provided on the wall of the cylinder 1. This mechanism includes a flame generator 7, a connecting pipe 71, a spray module 72, and a nozzle 73. The flame generator 7 is vertically arranged on one side of the cylinder 1 and inside it. An inner groove is opened on one side of the flame generator 7 and the spray module 72 is vertically arranged in the inner groove. The other side of the flame generator 7 is provided with a connecting pipe 71 for connecting external combustible materials and pipelines. Multiple nozzles 73 are evenly distributed on the spray module 72, all of which face the coating core cylinder 4 and are used to accurately spray high-temperature flames onto the surface of the preform for flame polishing.

[0029] The equipment provides all the necessary conditions for optical fiber preform surface treatment within a closed processing space: starting with deposition, deposited material is introduced through the film inlet pipe 21 to form the required outer cladding layer on the preform; followed by high-temperature shrinkage treatment: a high-temperature airflow is introduced through the hot flow inlet pipe 22 to bring the deposited preform to the required diameter and shape, and improve the uniformity and density of the material; finally, surface polishing is performed, using flame polishing by the polishing mechanism to remove surface defects and enhance material properties. This series of steps is completed continuously within the closed space, which not only significantly improves processing efficiency and reduces transfer time and costs between equipment, but also ensures close connection and quality control between each processing stage, thereby effectively guaranteeing the final quality and performance consistency of the optical fiber preform.

[0030] Example 2: Based on Example 1, such as Figure 6-7As shown, it also includes a cylinder 8. A cylinder 8 is added to the side of the flame generator 7 that penetrates into the cylinder 1. The cylinder 8 is wrapped with a heat insulation cover 81 to effectively isolate high temperature and protect the normal operation of the cylinder. A baffle 82 is installed on the movable rod of the cylinder 8. The baffle and the flame generator 7 adopt a sliding contact design. When the movable rod of the cylinder 8 is fully extended, the baffle 82 will completely close the opening of the inner groove of the flame generator 7. This design can effectively shield the main processing parts on the flame generator during the deposition treatment and high temperature melting and shrinking of the preform, thereby reducing the interference caused by other processing steps and ensuring the stability and accuracy of the processing.

[0031] At the same time, such as Figure 6 As shown, to enhance the stability and ease of operation of the coating core cylinder 4 during rotation, a support plate 9 is provided at the bottom inner part of the cylinder 1, and several ball bearings 91 are carefully arranged on the support plate 9. When the coating core cylinder 4 is hung on the hanging part 3, its bottom will be in close contact with the ball bearings 91. The presence of the ball bearings 91 not only significantly reduces the friction of the coating core cylinder 4 during rotation, making the rotation more stable, but also allows the operator to easily slide the coating core cylinder 4 through the ball bearings 91 on the support plate during the hanging and removal process. This not only saves effort but also facilitates subsequent connection with automatic material handling equipment, thereby improving the applicability and automation level of the equipment.

[0032] In addition, such as Figure 1 , Figure 2 and Figure 6 As shown, in order to facilitate operators to observe the processing status inside the cylinder 1 in real time, a transparent window 6 is opened on the cylinder cover 2. This design allows operators to keep track of the equipment's operating status and the processing progress of the preforms at any time, providing them with a basis for timely adjustment of operating parameters and ensuring the efficiency and accuracy of optical fiber preform processing.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A surface treatment device for optical cable preforms, comprising a cylinder (1) and a cylinder cover (2), wherein the cylinder cover (2) is rotatably provided at the front of the cylinder (1); Its characteristics are: It also includes a film material inlet pipe (21), a hot flow inlet pipe (22), a film material outlet pipe (23), a hot flow outlet pipe (24), an airflow inlet pipe (25), a hanging component (3), a coating core cylinder (4), a support component (41), a fixing block one (42), a sliding block (421), a spring (422), a rotating block (423), a fixing block two (43), and a top rod (431). The front of the cylinder (1) is equipped with a rotating cylinder cover (2). When the cylinder cover (2) is closed, it forms a closed processing space with the inside of the cylinder (1). The lower part of the cylinder (1) is equipped with an airflow inlet pipe (25). The rear part of the cylinder (1) has two... The sides are respectively provided with a film material inlet pipe (21) and a hot flow inlet pipe (22). The upper left and right sides of the cylinder (1) are respectively provided with a hot flow outlet pipe (24) and a film material outlet pipe (23). The cylinder wall of the cylinder (1) is provided with a polishing mechanism. The upper inner side of the cylinder (1) is provided with a hanging part (3). The front end of the hanging part (3) is provided with a notch. A coating core cylinder (4) is hung on the hanging part (3). The coating core cylinder (4) is composed of a hollow mesh cylinder, a shaft and a support part (41) set on the upper part of the shaft. Its interior is hollow. The coating core cylinder (4) contacts the hanging part (3) through the support part (41) at the top. The coating core cylinder (4) is equipped with a bearing. The inner ring of the bearing is connected to the shaft at the top of the coating core cylinder (4). Through the bearing, the coating core cylinder (4) can rotate on the hanger (3). The lower outer side of the coating core cylinder (4) is equipped with a fixing block (42). Multiple fixing blocks (42) are evenly spaced. A sliding block (421) is provided inside the fixing block (42). A rotating block (423) is provided on the top of the sliding block (421). A spring (422) is provided at the bottom of the sliding block (421). The two ends of the spring (422) are connected to the fixing block (42) and the bottom of the sliding block (421) respectively. The upper part is provided with a fixed block two (43) in the same number as the fixed block one (42), and the fixed block two (43) is arranged in a one-to-one correspondence with the fixed block one (42). The fixed block two (43) is provided with a top rod (431) in a rotating manner. The top rod (431) in the fixed block two (43) is in a concentric position with the sliding rod of the fixed block one (42) below. The top rod (431) and the sliding block (421) are used to vertically place the preform. The coating core cylinder (4) and the preform between the top rod (431) and the sliding block (421) are all driven to rotate by a rotation auxiliary mechanism.

2. The surface treatment equipment for optical cable preforms according to claim 1, characterized in that: The rotating auxiliary mechanism includes a first rotating wheel (5), a friction plate (51), a second rotating wheel (52), a motor (53), and a third rotating wheel (54). The second rotating wheel (52) is fixedly installed on the upper end of the shaft of the coating core cylinder (4). The motor (53) is installed on the top of the cylinder (1). The output shaft of the motor (53) is vertically inserted into the cylinder (1). The third rotating wheel (54) is installed at the end of the output shaft of the motor (53). The third rotating wheel (54) is in contact with the second rotating wheel (52). The motor (53) drives the second rotating wheel (52) to rotate, thereby driving the rotation of the core cylinder (4). The three wheels (54) rotate, thereby driving the coating core cylinder (4) to rotate inside the cylinder (1). Each of the two fixed blocks (43) is equipped with a first rotating wheel (5), and each first rotating wheel (5) is connected to the top rod (431) on the same two fixed blocks (43). A friction plate (51) is provided on the inner wall of the cylinder (1) near the upper position of the polishing mechanism. The friction plate (51) is arc-shaped. During the rotation of the first rotating wheel (5) with the coating core cylinder (4), it will contact the friction plate (51). The contact causes the rotating wheel to rotate, thereby driving the top rod (431) to rotate.

3. The surface treatment equipment for optical cable preforms according to claim 2, characterized in that: polishing... The mechanism includes a flame generator (7), a connecting pipe (71), a spray module (72), and a nozzle (73). The flame generator (7) is vertically installed on one side of the cylinder wall of the cylinder (1). One side of the flame generator (7) extends into the interior of the cylinder (1). An inner groove is opened on this side, and the spray module (72) is vertically installed in the inner groove. The connecting pipe (71) is installed on the other side of the flame generator (7). Multiple nozzles (73) are evenly spaced on the spray module (72), and all nozzles (73) face the coating core cylinder (4).

4. The surface treatment equipment for optical cable preforms according to claim 3, characterized in that: It also includes a cylinder (8), a heat shield (81) and a baffle (82). The cylinder (8) is provided on the side of the flame generator (7) that penetrates the cylinder (1). The heat shield (81) is provided on the outside of the cylinder (8). The baffle (82) is provided on the moving rod of the cylinder (8). The baffle (82) is in sliding contact with the flame generator (7). When the moving rod of the cylinder (8) is fully extended, the baffle (82) will completely close the opening of the inner groove.

5. The surface treatment equipment for optical cable preforms according to claim 4, characterized in that: It also includes a support plate (9) and balls (91). The bottom of the cylinder (1) is provided with a support plate (9) and a number of balls (91) are provided on the support plate (9). When the coated core cylinder (4) is hung on the hanger (3), its bottom will contact the balls (91).

6. The surface treatment equipment for optical cable preforms according to claim 5, characterized in that: The lower part of the fixed block (42) has a groove, and the lower part of the sliding block (421) has a round block that covers the lower end of the groove. The spring (422) is arranged in the groove of the fixed block (42).

7. The surface treatment equipment for optical cable preforms according to claim 6, characterized in that: It also includes a transparent window (6), and the cylinder cover (2) is provided with a transparent window (6).

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