CN220812213U - Novel preform cutting device used in optical fiber preform extension process - Google Patents

Abstract

The utility model relates to the technical field of optical fiber perform processing, and particularly discloses a novel perform cutting device used in an optical fiber perform extension procedure, which comprises a perform used for optical fiber manufacture, a heating component and a cooling component, wherein the heating component and the cooling component are arranged outside the perform; the heating part is positioned at the inner side of the heating assembly and is used for heating the preform rod to make the preform rod soft; the heating assembly comprises an outer barrel, two rotating rings are arranged on the inner side of the outer barrel, and tubular heating pieces which keep a certain distance with the heating part are arranged between the two rotating rings and are used for heating the heating part; according to the utility model, the clamping assembly, the butt joint part and the clamping block are matched with the heating assembly, so that the extending part can be broken according to the actual requirement in the use process in a reciprocating mode, and the cooling assembly and/or the cutting assembly can be broken, so that the requirements of use can be met.

Description

Novel preform cutting device used in optical fiber preform extension process

Technical Field

The utility model relates to the technical field of optical fiber perform processing, in particular to a novel preform cutting device used in an optical fiber perform extension procedure.

Background

Along with the aggravation of competition in the field of optical fiber preforms, the manufacturing of the optical fiber preforms is required to be continuously reduced in cost, and one important direction of the cost reduction is energy conservation and consumption reduction, various material consumption reduction and waste reduction. In the optical fiber preform production, there is an optical fiber preform stretching process in which the preform is fed into a heating furnace and the heated and softened preform is stretched at a speed faster than the feeding speed. The extended preform is scratched with a deeper wound by a cutting blade at the lower part of the heating furnace, and is cut into a proper length in the next process. When cutting, the preform rod is contacted with the cutting blade, so that the preform rod can be subjected to stronger impact;

The impact may cause a large bending of the preform softened in the heating furnace, and the bent preform needs to be corrected on a lathe in order to obtain stable characteristics in the subsequent process, which increases the manufacturing man-hour. In addition, when the cutting blade is used for a plurality of times, the blade is worn and deteriorated, and when the deteriorated blade cuts the preform, the cut surface of the preform is broken, and in order to avoid such a situation, it is necessary to perform troublesome processing such as frequent replacement of the blade, or change of the cutting condition according to the deterioration. And meanwhile, dust pollution is caused by cutting, so that the operation parts of all mechanisms are deteriorated, and personnel are injured by glass fragments. Based on this, improvements are needed.

Disclosure of utility model

The utility model provides a novel preform cutting device used in an optical fiber preform extension process, which aims to solve the problems of the prior art.

The utility model relates to a novel preform cutting device used in an optical fiber preform extension process, which comprises a preform used for optical fiber manufacture, a heating component and a cooling component, wherein the heating component and the cooling component are arranged outside the preform;

The heating part is positioned at the inner side of the heating assembly and is used for heating the preform rod to make the preform rod soft;

The heating assembly comprises an outer barrel, two rotating rings are arranged on the inner side of the outer barrel, and tubular heating pieces which keep a certain distance with the heating part are arranged between the two rotating rings and are used for heating the heating part;

The cooling assembly comprises a cover body, an inner cavity is formed in the inner side of the cover body and used for allowing high-speed liquid carbon dioxide to pass through, and the extension portion of the preform rod is cooled and is convenient to cut off.

As a further improvement of the utility model, the middle part of the outer side of the outer cylinder is provided with a gear ring which is used for controlling the outer cylinder to rotate by matching with a driving part.

As a further improvement of the utility model, an arc-shaped plate is arranged between the two rotating rings, the arc-shaped plate is in contact with the tube array heaters, and a heating area is arranged between the two tube array heaters and is used for processing the prefabricated rod.

As a further improvement of the utility model, the ends of the heating part and the extending part are provided with clamping and assembly, and the clamping assembly is used for respectively controlling the heating part and the extending part;

As a further improvement of the utility model, a clamping block is arranged at one end of the clamping assembly, a butt joint piece is arranged at one side of the clamping block, and one side of the butt joint piece is connected with one end of the prefabricated rod.

As a further improvement of the utility model, a cutting assembly is arranged at the position, below the cooling assembly, of the extension part of the preform rod, the cutting assembly comprises a fixed ring and a stirring ring, an aperture structure is arranged between the stirring ring and the fixed ring, and the outer side of the aperture structure reciprocates through a guide groove arranged at one side of the stirring ring.

As a further improvement of the present utility model, a deflector rod is integrally formed at the outer side of the deflector ring for controlling the diameter of a cutting area provided at the middle of the diaphragm structure so as to cut off the extension of the preform.

As a further improvement of the utility model, the inner side of the cover body is provided with one or more convex strips in an annular array, a spraying area is arranged between every two convex strips, one side of each convex strip is provided with a nozzle, and the nozzle is communicated with the inner cavity of the cover body.

Compared with the prior art, the utility model has the following beneficial effects:

According to the utility model, the clamping assembly, the butt joint part and the clamping block are matched with the heating assembly, so that the extending part can be broken according to the actual requirement in the use process in a reciprocating mode, the cooling assembly and/or the cutting assembly can be broken, the use requirement can be met, in the use process, the spraying area arranged on the inner side of the cooling assembly is matched with the inner cavity, the cooling requirement of the extending part can be met, and the cooling is realized by adopting carbon dioxide cooling, so that the cooling requirement is met, the requirement of fracture is met in a cold-hot alternating mode, and the cutting requirement can be realized by utilizing the aperture structure in the cutting assembly when the cooling part is not broken after the cooling.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of a preform, heating assembly and cooling assembly combination according to the present utility model;

FIG. 2 is a schematic view showing a combination structure of a preform and a heating element according to the present utility model;

FIG. 3 is a schematic view of the cross-sectional structure of FIG. 3 A-A in accordance with the present utility model;

FIG. 4 is a schematic elevational view of a preform, heating assembly, cooling assembly, and clamping assembly of the present utility model;

FIG. 5 is a schematic side view of a heating assembly and preform according to the present utility model;

FIG. 6 is a schematic view of the internal structure of the heating assembly of the present utility model;

FIG. 7 is a schematic diagram of a front view of a rotary ring according to the present utility model;

FIG. 8 is a schematic view of the cross-sectional structure A-A of FIG. 7 in accordance with the present utility model;

FIG. 9 is a schematic perspective view of a cooling assembly in embodiment 1 of the present utility model;

FIG. 10 is a schematic diagram showing the front view of the cooling assembly in embodiment 1 of the present utility model;

FIG. 11 is a schematic view of the cross-sectional structure A-A of FIG. 10 in accordance with the present utility model;

FIG. 12 is a schematic perspective view of a severing assembly of the present utility model;

FIG. 13 is a schematic elevational view of a severing assembly of the present utility model;

FIG. 14 is a schematic view showing a combination structure of a preform, a heating member and a cooling member in example 2 of the present utility model.

In the figure: 1. a preform; 2. a heating assembly; 3. a cooling assembly; 4. a clamping assembly; 5. a butt joint member; 6. a clamping block; 7. cutting off the assembly;

11. a heating section; 12. an extension;

21. An outer cylinder; 22. a gear ring; 23. a tube array heating element; 24. a rotating ring; 25. a heating zone; 26. an arc-shaped plate;

31. a cover body; 32. a spray zone; 33. a nozzle; 34. a convex strip; 35. an inner cavity;

71. A fixing ring; 72. a dial ring; 73. an aperture structure; 74. a guide groove; 75. a deflector rod; 76. cutting the area.

Detailed Description

Various embodiments of the present utility model are disclosed in the following drawings, which are presented in sufficient detail to provide a thorough understanding of the present utility model. However, it should be understood that these physical details should not be used to limit the utility model. That is, in some embodiments of the present utility model, these physical details are not necessary. Moreover, for the sake of simplicity of illustration, some well-known and conventional structures and components are shown in the drawings in a simplified schematic manner.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The preform 1 is produced by a process of stretching the optical fiber preform 1, in which the preform 1 is fed into a heating furnace and the heated and softened preform 1 is stretched at a speed faster than the feeding speed in the process of stretching the preform 1. The extended preform 1 is cut into a suitable length by a cutting blade at the lower part of the heating furnace by drawing a deeper wound. When cutting, the preform 1 and the cutting blade are required to be contacted, so that the preform 1 can be subjected to strong impact;

The impact may cause a large bending of the preform 1 softened in the heating furnace, and based on this, the present application provides a novel preform 1 cutting device for use in an optical fiber preform 1 extension process, comprising a preform 1 for optical fiber manufacture and a heating assembly 2 and a cooling assembly 3 disposed outside the preform 1;

The preform 1 comprises a heating part 11 and an extension part 12, wherein the heating part 11 is positioned on the inner side of the heating assembly 2 and is used for heating the preform 1 so as to be soft;

The heating assembly 2 comprises an outer cylinder 21, two rotating rings 24 are arranged on the inner side of the outer cylinder 21, and a tube array heating piece 23 which keeps a certain distance with the heating part 11 is arranged between the two rotating rings 24 and is used for heating the heating part 11;

The cooling module 3 comprises a cover 31, and an inner cavity 35 is arranged on the inner side of the cover 31 and used for allowing high-speed liquid carbon dioxide to pass through so as to cool the extension part 12 of the preform 1 and facilitate cutting.

The preform 1 is composed of a heating portion 11 and an extension portion 12. The heating part 11 is located inside the heating element 2, and softens the preform 1 by heat treatment. The heating unit 2 is composed of an outer tube 21 and two rotary rings 24, and a tube array heating member 23 for heating the heating portion 11 is disposed between the two rotary rings 24. In this way, the preform 1 can reach a suitable softening temperature, ready for the elongation process.

After the extension process is completed, high-speed liquid carbon dioxide is sprayed through the inner cavity 35 to cool the extension portion 12 of the preform 1. The purpose of this cooling process is to strengthen the structure of the extension 12, facilitating the subsequent cutting process.

By the cooperation of the heating assembly 2 and the cooling assembly 3, the heating and cooling process of the preform 1 is achieved. After the preform 1 is subjected to the heat treatment, it becomes soft to accommodate the requirements of the elongation process. After the extension is completed, the high-speed liquid carbon dioxide in the cooling component 3 cools the extension part 12, so that the structure of the extension part is solidified and is easy to break, the preform 1 becomes more stable, and good conditions are provided for the subsequent cutting process, and the heating and cooling processes in the manufacturing process of the optical fiber preform 1 are efficiently and accurately controlled by the novel preform 1 cutting device.

The middle part of the outer side of the outer cylinder 21 is provided with a gear ring 22 for controlling the outer cylinder 21 to rotate in cooperation with a driving part.

An arc-shaped plate 26 is further arranged between the two rotating rings 24, the arc-shaped plate 26 is in contact with the tube array heaters, and a heating area 25 is arranged between the two tube array heaters and is used for processing the prefabricated rod 1.

By rotating the outer cylinder 21, the tube array heater and the rotating ring 24 in the heating assembly 2 are also rotated, and uniform heating treatment of the preform 1 is realized.

Furthermore, an arcuate plate 26 is provided between the two rotating rings 24. These arcuate plates 26 are in close contact with the array heater to ensure sufficient heat transfer to allow uniform heating of the preform 1. Between the two tube array heaters, a heating zone 25 is provided, which is dedicated to the heat treatment of the preform 1. By the arrangement of the heating zone 25, the preform 1 can reach a suitable softening temperature, ready for the extension process.

In combination with the foregoing, the workflow of the entire preform 1 cutting device becomes more complete and efficient. The outer cylinder 21 can be rotated by the control of the driving part, so that the tube array heater and the rotating ring 24 in the heating assembly 2 also follow the rotation, and uniform heating of the preform 1 is realized. At the same time, the provision of the arcuate plate 26 ensures a sufficient heat transfer and the design of the heating zone 25 ensures that the preform 1 can reach a softened state, providing good conditions for the extension process.

The design of this new preform 1 cut-off device makes the heating process more uniform and enables precise control of the preform 1. This can improve the quality and productivity of the preform 1

The ends of the heating part 11 and the extending part 12 are provided with clamping assemblies, and the clamping assemblies 4 are used for respectively controlling the heating part 11 and the extending part 12;

One end of the clamping component 4 is provided with a clamping block 6, one side of the clamping block 6 is provided with a butt joint piece 5, and one side of the butt joint piece 5 is connected with one end of the prefabricated rod 1.

By the arrangement of the clamping assembly 4, the heating portion 11 and the extension portion 12 can be controlled separately. One end of the preform 1 is connected to the butt joint member 5, and the clamp block 6 plays a role of fixing the preform 1. In this way, the heating portion 11 and the extension portion 12 can maintain stable positions in the cutting device and perform corresponding operations.

In combination with the foregoing, the entire novel preform 1 cutting device is more complete and fine in design. Through the use of the clamping assembly 4, both the heating portion 11 and the extension portion 12 can be independently controlled and fixed. The preform 1 is reliably positioned by the connection of the abutment 5 and the fixture 6. In this way, the preform 1 can be stably subjected to heating, stretching and cutting operations during cutting.

The extension 12 of the preform 1 is provided with a cutting assembly 7 at a position below the cooling assembly 3, the cutting assembly 7 comprises a fixed ring 71 and a poking ring 72, an aperture structure 73 is arranged between the poking ring 72 and the fixed ring 71, and the outer side of the aperture structure 73 reciprocates through a guide groove 74 arranged at one side of the poking ring 72.

A deflector rod 75 is integrally formed on the outer side of the deflector ring 72 for controlling the diameter of a cutting area 76 provided in the middle of the diaphragm structure 73 so as to cut off the extension 12 of the preform 1.

The outside of the toggle ring 72 is integrally formed with a toggle lever 75 for controlling the diameter of a cut-off area 76 in the middle of the diaphragm structure 73. Thus, when the cutting operation is performed, the movement of the dial ring 72 changes the diameter of the cutting area 76 in the aperture structure 73 so as to perform precise cutting with the extension 12 of the preform 1.

In combination with the foregoing, the design of the entire severing assembly 7 increases the accuracy and controllability of the severing of the preform 1. By the combination of the fixing ring 71 and the toggle ring 72, and the arrangement of the aperture structure 73, accurate cutting of the extension 12 of the preform 1 can be achieved. The outside lever 75 of the toggle ring 72 controls the diameter of the cut-off area 76 so that the cut-off process is finer and more reliable.

In order to improve the cutting precision, a component for detecting the cutting position, such as a camera, an infrared sensor and the like, may be arranged on one side of the toggle ring 72;

By matching with the use of the cooling assembly 3, the possibility that the preform 1 is broken is caused by the way of thermal expansion and cold contraction, the cutting assembly 7 is not required to cut off the preform 1, and once the preform 1 is not broken, the cutting assembly 7 can be adopted to cut off the preform;

The design of the novel preform 1 cutting device enables the cutting process to be more automatic and accurate. With the cutting assembly 7, the extension 12 of the preform 1 can be easily cut, improving the manufacturing efficiency and the cutting quality. Meanwhile, the reciprocation of the diaphragm structure 73 is performed through the guide groove 74, further enhancing the stability and reliability of cutting.

One or a plurality of raised strips 34 are arranged on the inner side of the cover body 31 in an annular array, a spraying area 32 is arranged between every two raised strips 34, a nozzle 33 is arranged on one side of each raised strip 34, and the nozzle 33 is communicated with an inner cavity 35 of the cover body 31.

Such a design makes the cooling process more efficient and uniform. When the extension process is completed, the high-speed liquid carbon dioxide is introduced into the inner cavity 35 of the cover 31 and enters the injection region 32 of each ridge 34 through the nozzle 33. The injected carbon dioxide cools the extension 12 of the preform 1, ensuring rapid cooling and solidification thereof.

At least one of the cover bodies 31 may be disposed outside the extension portion 12 to maintain a certain distance from the extension portion 12, and the air of high-speed liquid carbon dioxide may be injected to the outside of the extension portion 12 to achieve the cooling effect by the distance;

By the design of the annular array of ribs 34 and nozzles 33, the cooling area covers the entire extension 12 of the preform 1, so that the cooling process is uniform and efficient. Each rib 34 acts as a focusing and directional cooling to ensure that the extension 12 of the preform 1 reaches the desired solidification state before cutting.

The design of this new preform 1 cutting device, combined with the foregoing, further optimizes the cooling process. By providing the annular array of ribs 34 and nozzles 33, a uniform and efficient cooling of the cooling area in the cutting device is achieved. The design can improve the solidification speed and quality of the prefabricated rod 1, and provides better conditions for the subsequent cutting process.

Example 2:

Referring to fig. 14, this is a second form of cooling module 3, which is used to fully wrap the extension 12 of the preform 1, and to cool it by using high-speed liquid carbon dioxide in the same manner as in embodiment 1, and by this fully wrapping manner, the cooling and cutting effects can still be achieved and the cooling uniformity can be better ensured by matching with the cutting module 7.

Example 3:

on the basis of the cooling assembly 3, when the extending part 12 is not cooled, the extending part 12 is in a high-temperature state, and the extending part is rotated once by the metal blade on the surface of the extending part, so that the extending part enters the cooling assembly 3 again, and the cooling assembly is cooled by the high-speed liquid carbon dioxide, so that the position rotated once by the metal blade can be expanded with heat and contracted with cold, thereby realizing the purpose of breaking, and even if the extending part is not broken, the extending part can still break at the position of the metal blade turning-out trace in cooperation with the cutting assembly 7 arranged below.

The foregoing description is only illustrative of the utility model and is not to be construed as limiting the utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principle of the present utility model, should be included in the scope of the claims of the present utility model.

Claims (9)

1. A novel preform cutting device used in an optical fiber preform extension process comprises a preform (1) used for optical fiber manufacture, a heating component (2) and a cooling component (3) which are arranged outside the preform (1);

The method is characterized in that:

The preform (1) comprises a heating part (11) and an extending part (12), wherein the heating part (11) is positioned at the inner side of the heating assembly (2) and is used for heating the preform (1) to be soft;

The heating assembly (2) comprises an outer cylinder (21), two rotating rings (24) are arranged on the inner side of the outer cylinder (21), and a tubular heating piece (23) which keeps a certain distance with the heating part (11) is arranged between the two rotating rings (24) and is used for heating the heating part (11);

The cooling assembly (3) comprises a cover body (31), an inner cavity (35) is formed in the inner side of the cover body (31) and used for allowing high-speed liquid carbon dioxide to pass through, and the extension portion (12) of the preform (1) is cooled and is convenient to cut off.

2. A novel preform cutting device for use in an optical fiber preform extension process according to claim 1, wherein: the middle part of the outer side of the outer cylinder (21) is provided with a gear ring (22) which is used for controlling the outer cylinder (21) to rotate by matching with a driving part.

3. A novel preform cutting device for use in an optical fiber preform extension process according to claim 1, wherein: an arc-shaped plate (26) is further arranged between the two rotating rings (24), the arc-shaped plate (26) is in contact with the tube array heaters, and a heating area (25) is arranged between the two tube array heaters and used for processing the prefabricated rod (1).

4. A novel preform cutting device for use in an optical fiber preform extension process according to claim 1, wherein: the ends of the heating part (11) and the extending part (12) are respectively provided with a clamping assembly (4), and the clamping assemblies (4) are used for respectively controlling the heating part (11) and the extending part (12).

5. A novel preform cutting device for use in an optical fiber preform extension process according to claim 4, wherein: one end of the clamping component (4) is provided with a clamping block (6), one side of the clamping block (6) is provided with a butt joint piece (5), and one side of the butt joint piece (5) is connected with one end of the prefabricated rod (1).

6. A novel preform cutting device for use in an optical fiber preform extension process according to claim 1, wherein: the extension (12) of the preform (1) is provided with a cutting assembly (7) below the cooling assembly (3).

7. A novel preform cutting device for use in an optical fiber preform extension process according to claim 6, wherein: the cutting-off assembly (7) comprises a fixed ring (71) and a stirring ring (72), wherein an aperture structure (73) is arranged between the stirring ring (72) and the fixed ring (71), and the outer side of the aperture structure (73) reciprocates through a guide groove (74) arranged on one side of the stirring ring (72).

8. A novel preform cutting device for use in an optical fiber preform extension process according to claim 7, wherein: the outside of the toggle ring (72) is integrally formed with a toggle lever (75) for controlling the diameter of a cutting area (76) arranged in the middle of the aperture structure (73) so as to cut off the extension part (12) of the preform (1).

9. A novel preform cutting device for use in an optical fiber preform extension process according to claim 1, wherein: the inner side of the cover body (31) is provided with one or more raised strips (34) in an annular array, a spraying area (32) is arranged between every two raised strips (34), one side of each raised strip (34) is provided with a nozzle (33), and the nozzle (33) is communicated with an inner cavity (35) of the cover body (31).