Sleeve self-adaptive to diameter of optical wand

Abstract

The utility model relates to the technical field of optical fiber production, in particular to a sleeve capable of self-adapting to the diameter of an optical wand, which aims to solve the technical problem that a sealing element in the prior art cannot adapt to the diameter of the optical wand, and is mainly realized by the following technical scheme: the sleeve capable of self-adapting to the diameter of the optical wand comprises a sleeve body, comprising a sleeve body and an adapting piece, the adapting piece is arranged at the position, close to the top, in the sleeve body, the sleeve body comprises a sealing barrel and an outer extending edge, the adapting piece comprises a graphite felt, an elastic piece, an expanding piece and an adjusting piece, the graphite felt is connected with the elastic piece, and the expanding piece is connected with the elastic piece and extends out of the sealing barrel; the adjusting part is arranged at one end of the top of the elastic part, the top of the sleeve body is heightened to seal the sleeve body and is matched with the internal adapting part to improve the large-diameter fluctuating preform wire drawing problem, it is guaranteed that the graphite felt is sealed stably, the using amount of the graphite felt can be saved during wire drawing, the graphite felt does not need to be frequently replaced according to the diameter of a light rod every time, and cost is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber production, in particular to a sleeve with an adaptive optical rod diameter. Background Art

[0002] Fiber drawing is to soften a large diameter fiber preform rod by heating, and then draw it into a small diameter fiber filament. Since the deposition technology of fiber preform rods is not fully mature, the diameters of some fiber rod products are uneven and the difference between the maximum and minimum diameters is large. Therefore, when drawing fiber, there is air leakage in the drawing furnace during the drawing process. The air entering the drawing furnace will cause the surface of the graphite heating element to oxidize. The oxidized particles peeling off the surface of the graphite element will adhere to the surface of the bare fiber, affecting the quality of the fiber and even causing waste fiber.

[0003] In the prior art, seals are used to seal the gap between the optical fiber preform and the furnace mouth. The seals are mostly graphite felt rings cut according to the minimum diameter of the optical rod. However, due to the large diameter deviation of some optical rods, when the maximum diameter enters the furnace, the graphite felt ring will sink and deform. When the minimum diameter enters, the graphite felt ring fails to reset and air leakage will occur, causing gas turbulence in the furnace. A small amount of oxygen will also enter and oxidize, resulting in gas leakage and gas turbulence in the furnace, and bare fiber fluctuations or fiber breakage. Therefore, a sleeve that can adaptively seal as the diameter of the optical rod changes is needed to achieve the purpose of firm sealing and stable wire drawing. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect in the prior art that the sealing member cannot adapt to the diameter of the optical rod, thereby providing a sleeve that is adaptive to the diameter of the optical rod.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A sleeve with an adaptive light rod diameter comprises a sleeve body and an adaptor, wherein the adaptor is arranged near the top of the sleeve body, the sleeve body comprises a sealing cylinder and an extension edge, the extension edge is extended outside the bottom of the sealing cylinder, the adaptor comprises a graphite felt, an elastic member, a support member and an adjusting member, the graphite felt is annular and connected to the elastic member, the support member is connected to the elastic member and extends outside the sealing cylinder, and the adjusting member is arranged at the top end of the elastic member.

[0007] By adopting the above technical scheme, the sealing cylinder is raised at the top of the sleeve body and cooperates with the internal adaptor to improve the wire drawing problem of preform rods with large diameter fluctuations. When the maximum diameter enters the furnace, the graphite felt sinks and deforms. When the minimum diameter enters, the graphite felt is elastically reset by the elastic part to ensure the stability of the graphite felt seal. The amount of graphite felt can be saved during wire drawing, and there is no need to frequently replace new graphite felt according to the diameter of the light rod each time, which effectively saves costs and effectively improves the wire drawing efficiency.

[0008] Furthermore, a light rod groove is provided through the middle of the sealing cylinder, the light rod groove is coaxially arranged with the sealing cylinder and the outer diameter of the light rod groove is smaller than the outer diameter of the sealing cylinder, an adaptation groove is provided at the top of the sealing cylinder corresponding to the adaptation part, the inner diameter of the adaptation groove is the same as the outer diameter of the light rod groove and the outer diameter of the adaptation groove is smaller than the outer diameter of the sealing cylinder, and the height of the outer extension edge does not exceed one eighth of the height of the sealing cylinder.

[0009] By adopting the above technical solution, the optical rod is set in the optical rod groove and the top is sealed by the original top air seal of the wire drawing furnace body. The outer edge is connected and fixed to the intersection of the wire drawing furnace, which ensures that the optical rod is in a good sealing state during the entire production process. The adaptation groove is used to carry the adaptation part without affecting the optical rod drawing process.

[0010] Furthermore, the elastic member includes a steel wire rope and a telescopic spring, the steel wire rope is spirally arranged in the adaptation groove, the spiral axis of the steel wire rope is coaxially arranged with the axis of the adaptation groove, the telescopic spring is sleeved on the steel wire rope and spirally wound along the outer circumference of the steel wire rope, and a receiving card is also extended in the optical rod groove corresponding to the telescopic spring, the receiving card is a plurality of discontinuous arcs and is spirally arranged along the steel wire rope, the receiving card is fixed to the inner wall of the optical rod groove and the width is smaller than the radius of the telescopic spring.

[0011] By adopting the above technical scheme, the steel wire rope provides support for the telescopic spring. When the large diameter of the light rod passes through the graphite felt and the elastic part during use, the graphite felt and the telescopic spring are squeezed, the pitch of the telescopic spring is enlarged and the overall diameter is enlarged, and the reaction force of the telescopic spring makes the graphite felt fit the outer diameter of the light rod. After the large diameter light rod passes, the smaller diameter passes through the graphite felt, and the telescopic spring loses the squeezing of the large diameter light rod. The telescopic spring resets and squeezes the graphite felt so that the graphite felt continues to fit the light rod. Therefore, when the diameter of the light rod fluctuates greatly, the graphite felt can still fit the outside of the light rod to ensure sealing at this location.

[0012] Furthermore, the elastic member is connected to the graphite felt through a connecting member, and the connecting member includes a plurality of connecting columns and a plurality of connecting strips, the connecting strips are vertically arranged in the adaptation groove and arranged in an array along the outer diameter of the adaptation groove, the steel wire rope and the telescopic spring pass through the connecting strips, and movable grooves are arranged on the connecting strips corresponding to the steel wire rope and the telescopic spring, and each connecting strip is provided with a plurality of connecting columns in an array along its height direction, and one end of each connecting column is fixed to the graphite felt and the other end is fixed to the corresponding connecting strip.

[0013] By adopting the above technical solution, the graphite felt is fixed and connected by a connecting piece, ensuring the connection between the graphite felt and the elastic piece and being able to transmit state and movement, so that the elastic piece can feedback force to the graphite felt, change the diameter of the graphite felt and fit the outer diameter of the light rod.

[0014] Furthermore, the connecting member and the expansion member are arranged alternately, and the expansion member includes a plurality of sleeve rings and a plurality of expansion rods. The sleeve ring is fixed to one end of the expansion rod and is sleeved on the telescopic spring. The expansion rod is radially slidably arranged along the sealing cylinder and extends out of the sealing cylinder. A plurality of the expansion rods are arranged in a circular array along the sealing cylinder, and a plurality of the expansion rods are also arranged in a vertical array along the axis of the sealing cylinder. The number of the expansion rods corresponds to the number of the connecting columns.

[0015] Furthermore, the expansion member also includes a plurality of relatively arranged operating handles, which are relatively arranged on both sides of the sealing cylinder and are also arranged in a vertical array along the axis of the sealing cylinder. The operating handles are arc-shaped and the inner side is fixed to the other end of the plurality of expansion rods on the same layer.

[0016] By adopting the above technical solution, the expansion piece is arranged to directly pull open the telescopic spring when changing the rod and replacing the graphite felt, which is convenient for installing the optical rod and reducing the replacement of the graphite felt.

[0017] Furthermore, the adjusting member includes an adjusting rod and an adjusting block, the adjusting block is fixed to one end of the top of the telescopic spring and is slidably arranged on the top of the sealing cylinder, the adjusting rod is threadedly connected to the adjusting block and controls the sliding of the adjusting block, and the sliding direction of the adjusting block is tangent to the outer diameter of the telescopic spring.

[0018] Furthermore, the adjusting member also includes a shielding block, which is arranged on the outer side of the top of the sealing cylinder and corresponds to the adjusting rod, and the top of the shielding block is hinged to the sealing cylinder.

[0019] By adopting the above technical solution, when the telescopic spring fails slightly due to high temperature, the position of the adjusting block is adjusted by the adjusting rod to shrink the telescopic spring, so that the telescopic spring wound on the wire rope is reduced and the elastic force of the telescopic spring is increased, thereby ensuring the adaptability of the adaptor.

[0020] In summary, the technical solution of the utility model has the following advantages:

[0021] 1. The utility model provides a sleeve with adaptive optical rod diameter. The top of the sleeve body is raised to seal the cylinder and cooperates with internal adaptors to improve the drawing problem of preform rods with large diameter fluctuations. When the maximum diameter enters the furnace, the graphite felt sinks and deforms. When the minimum diameter enters, the graphite felt is elastically reset by the elastic part to ensure the stability of the graphite felt sealing.

[0022] 2. The sleeve with adaptive optical rod diameter provided by the utility model is provided with a stretching piece, which can directly pull open the telescopic spring when changing the rod and replacing the graphite felt, and is convenient for installing the optical rod, saving the amount of graphite felt, and there is no need to frequently replace new graphite felt according to the diameter of the optical rod every time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of a sleeve with an adaptive light rod diameter provided in one embodiment of the utility model;

[0025] Figure 2 A cross-sectional view of a sleeve with an adaptive light rod diameter provided in one embodiment of the utility model;

[0026] Figure 3 A schematic diagram of a top view of a sleeve with an adaptive light rod diameter provided in one embodiment of the utility model;

[0027] Figure 4 The exploded structure diagram of a sleeve with adaptive light rod diameter provided in one embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1. Sleeve body; 11. Sealing cylinder; 111. Light rod groove; 1111. Acceptor card; 112. Adaptive groove; 12. Outer edge; 2. Adaptive part; 3. Graphite felt; 31. Connecting part; 311. Connecting column; 312. Connecting strip; 3121. Movable groove; 4. Elastic part; 41. Steel wire rope; 42. Telescopic spring; 5. Spreading part; 51. Sleeve ring; 52. Spreading rod; 53. Operating handle; 6. Adjusting part; 61. Adjusting rod; 62. Adjusting block; 63. Shielding block. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] A sleeve with an adaptive light rod diameter, such as Figure 1 , Figure 2 and Figure 4As shown, it includes a sleeve body 1 and an adaptor 2. The adaptor 2 is arranged near the top of the sleeve body 1. The sleeve body 1 includes a sealing cylinder 11 and an outer edge 12. The outer edge 12 is extended and arranged outside the bottom of the sealing cylinder 11. The adaptor 2 includes a graphite felt 3, an elastic member 4, a propping member 5 and an adjusting member 6. The graphite felt 3 is annular and connected to the elastic member 4. The propping member 5 is connected to the elastic member 4 and is extended and arranged outside the sealing cylinder 11. The adjusting member 6 is arranged at one end of the top of the elastic member 4. The sealing cylinder 11 is raised at the top of the sleeve body 1 and cooperates with the internal adaptor 2 to improve the wire drawing problem of preform rods with large diameter fluctuations. When the maximum diameter enters the furnace, the graphite felt 3 sinks and deforms. When the minimum diameter enters, the graphite felt 3 is elastically reset by the elastic member 4 to ensure the stability of the sealing of the graphite felt 3. The amount of graphite felt 3 can be saved when used for wire drawing. There is no need to frequently replace new graphite felt 3 according to the diameter of the light rod each time, which effectively saves costs and effectively improves the wire drawing efficiency.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, a light rod groove 111 is provided through the middle of the sealing cylinder 11, the light rod groove 111 is coaxially arranged with the sealing cylinder 11 and the outer diameter of the light rod groove 111 is smaller than the outer diameter of the sealing cylinder 11, and an adaption groove 112 is provided at the top of the sealing cylinder 11 corresponding to the adaptor 2, the inner diameter of the adaption groove 112 is the same as the outer diameter of the light rod groove 111 and the outer diameter of the adaption groove 112 is smaller than the outer diameter of the sealing cylinder 11, and the height of the outer edge 12 does not exceed one eighth of the height of the sealing cylinder 11. The light rod is arranged in the light rod groove 111 and the top is sealed by the original top air seal of the wire drawing furnace body, and the outer edge 12 is connected and fixed to the intersection of the wire drawing furnace, which ensures that the light rod is in a good sealing state during the entire production process as a whole, and the adaption groove 112 is used to carry the adaptor 2 without affecting the light rod wire drawing process.

[0033] like Figure 2 , Figure 3 and Figure 4As shown, the elastic member 4 includes a steel wire rope 41 and a telescopic spring 42. The steel wire rope 41 is spirally arranged in the adaptation groove 112. The spiral axis of the steel wire rope 41 is coaxially arranged with the axis of the adaptation groove 112. The telescopic spring 42 is sleeved on the steel wire rope 41 and spirally wound along the outer circumference of the steel wire rope 41. A receiving card 1111 is also extended to correspond to the telescopic spring 42 in the optical rod groove 111. The receiving card 1111 is a plurality of discontinuous arcs and is spirally arranged along the steel wire rope 41. The receiving card 1111 is fixed to the inner wall of the optical rod groove 111 and the extension width is smaller than the radius of the telescopic spring 42. The steel wire rope 41 provides support for the telescopic spring 42. When the large diameter of the light rod passes through the graphite felt 3 and the elastic member 4 during use, the graphite felt 3 and the telescopic spring 42 are squeezed. The pitch of the telescopic spring 42 is enlarged and the overall diameter is enlarged. The reaction force of the telescopic spring 42 makes the graphite felt 3 fit the outer diameter of the light rod. After the large diameter light rod passes, the smaller diameter passes through the graphite felt 3, and the telescopic spring 42 loses the squeezing of the large diameter light rod. The telescopic spring 42 resets and squeezes the graphite felt 3 so that the graphite felt 3 continues to fit the light rod. Therefore, when the diameter of the light rod fluctuates greatly, the graphite felt 3 can still fit the outside of the light rod to ensure sealing at this location.

[0034] The elastic member 4 is connected to the graphite felt 3 through a connecting member 31, and the connecting member 31 includes a plurality of connecting columns 311 and a plurality of connecting strips 312. Three connecting strips 312 are provided, and the connecting strips 312 are vertically arranged in the adapting groove 112 and arranged in an array along the outer diameter circumference of the adapting groove 112. The steel wire rope 41 and the telescopic spring 42 pass through the connecting strips 312. The connecting strips 312 are provided with movable grooves 3121 corresponding to the steel wire rope 41 and the telescopic spring 42, that is, the connecting strips 312 are sleeved on the telescopic spring 42 and the steel wire rope 41. Three connecting columns 311 are arranged in an array along the height direction of each connecting strip 312, and one end of each connecting column 311 is fixed to the graphite felt 3 and the other end is fixed to the corresponding connecting strip 312, and a total of eighteen connecting columns 311 are provided. The graphite felt 3 is fixed and connected by the connecting piece 31, ensuring the connection between the graphite felt 3 and the elastic piece 4 and being able to transmit state and movement, so that the elastic piece 4 can feedback force to the graphite felt 3, change the diameter of the graphite felt 3 and fit the outer diameter of the light rod.

[0035] like Figure 2 , Figure 3 and Figure 4As shown, the connecting member 31 and the opening member 5 are arranged alternately, and the opening member 5 includes a plurality of sleeve rings 51 and a plurality of opening rods 52. The sleeve ring 51 is fixed at one end of the opening rod 52 and sleeved on the telescopic spring 42. The number of the sleeve rings 51 is the same as the number of the opening rods 52. The opening rods 52 are radially slidably arranged along the sealing cylinder 11 and extend out of the sealing cylinder 11. There are a plurality of opening rods 52 arranged in a circumferential array along the sealing cylinder 11. There are also a plurality of opening rods 52 arranged in a vertical array along the axis of the sealing cylinder 11. The number of opening rods 52 corresponds to the number of the connecting column 311. There are also eighteen opening rods 52 arranged, which are divided into three layers of upper, middle and lower, and each layer of the circumferential array is arranged with six. The opening member 5 also includes six operating handles 53 arranged opposite to each other on the left and right. The operating handles 53 are divided into three layers of upper, middle and lower, and each layer is relatively arranged with two. The operating handles 53 are arc-shaped and the inner side is fixed to the other end of the three opening rods 52 on the same layer. The expansion member 5 is provided to directly pull open the telescopic spring 42 when changing the rod and replacing the graphite felt 3, so as to facilitate the installation of the optical rod and reduce the replacement of the graphite felt 3.

[0036] like Figure 3 and Figure 4 As shown, the adjusting member 6 includes an adjusting rod 61 and an adjusting block 62. The adjusting block 62 is fixed to one end of the top of the telescopic spring 42 and is slidably arranged on the top of the sealing cylinder 11. The adjusting rod 61 is threadedly connected to the adjusting block 62 and controls the sliding of the adjusting block 62. The sliding direction of the adjusting block 62 is tangent to the outer diameter of the telescopic spring 42. The adjusting member 6 also includes a shielding block 63. The shielding block 63 is arranged on the outer side of the top of the sealing cylinder 11 and corresponds to the adjusting rod 61. The top of the shielding block 63 is hinged to the sealing cylinder 11. When the telescopic spring 42 fails slightly due to high temperature, the position of the adjusting block 62 is adjusted by the adjusting rod 61 to shrink the telescopic spring 42, so that the telescopic spring 42 wrapped around the wire rope 41 is reduced, and the elastic force of the telescopic spring 42 is increased, thereby ensuring the adaptability of the adaptor 2.

[0037] The working principle and use method of the sleeve for adaptive light rod diameter are as follows: increase the height of the sealing cylinder 11 and set an adaptor 2 inside the sealing cylinder 11, place a steel wire rope 41 and sleeve a telescopic spring 42 thereon, set a connecting piece 31 to connect the graphite felt 3 and the telescopic spring 42, the end of the telescopic spring 42 away from the graphite felt 3 is connected to the expansion rod 52 by a sleeve ring 51, the other end of the expansion rod 52 is connected to the operating handle 53, set an adjustment block 62 to be fixed to the top of the telescopic spring 42, and adjust the position of the adjustment block 62 by the adjustment rod 61.

[0038] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A sleeve with an adaptive light rod diameter, characterized in that: The invention comprises a sleeve body (1) and an adaptor (2), wherein the adaptor (2) is arranged inside the sleeve body (1) near the top, the sleeve body (1) comprises a sealing cylinder (11) and an extension edge (12), the extension edge (12) is extended and arranged outside the bottom of the sealing cylinder (11), the adaptor (2) comprises a graphite felt (3), an elastic member (4), a propping member (5) and an adjusting member (6), the graphite felt (3) is annular and connected to the elastic member (4), the propping member (5) is connected to the elastic member (4) and is extended and arranged outside the sealing cylinder (11), and the adjusting member (6) is arranged at one end of the top of the elastic member (4).

2. The sleeve with adaptive optical rod diameter according to claim 1, characterized in that: A light rod groove (111) is provided through the middle of the sealing cylinder (11), the light rod groove (111) is coaxially arranged with the sealing cylinder (11) and the outer diameter of the light rod groove (111) is smaller than the outer diameter of the sealing cylinder (11), an adaption groove (112) is provided at the top of the sealing cylinder (11) corresponding to the adaption piece (2), the inner diameter of the adaption groove (112) is the same as the outer diameter of the light rod groove (111) and the outer diameter of the adaption groove (112) is smaller than the outer diameter of the sealing cylinder (11), and the height of the outer extension edge (12) does not exceed one eighth of the height of the sealing cylinder (11).

3. The sleeve with adaptive optical rod diameter according to claim 2, characterized in that: The elastic member (4) comprises a steel wire rope (41) and a telescopic spring (42), wherein the steel wire rope (41) is spirally arranged in the adapting groove (112), and the spiral axis of the steel wire rope (41) is coaxially arranged with the axis of the adapting groove (112), and the telescopic spring (42) is sleeved on the steel wire rope (41) and spirally wound along the outer circumference of the steel wire rope (41), and a receiving card (1111) is also extended in the optical rod groove (111) corresponding to the telescopic spring (42), and the receiving card (1111) is a plurality of discontinuous arcs and is spirally arranged along the steel wire rope (41), and the receiving card (1111) is fixed on the inner wall of the optical rod groove (111) and has a width smaller than the radius of the telescopic spring (42).

4. The sleeve with adaptive light rod diameter according to claim 3, characterized in that: The elastic member (4) is connected to the graphite felt (3) via a connecting member (31); the connecting member (31) comprises a plurality of connecting columns (311) and a plurality of connecting strips (312); the connecting strips (312) are vertically arranged in the adapting groove (112) and are arranged in an array along the outer diameter circumference of the adapting groove (112); the steel wire rope (41) and the telescopic spring (42) pass through the connecting strip (312); a movable groove (3121) is arranged on the connecting strip (312) corresponding to the steel wire rope (41) and the telescopic spring (42); each connecting strip (312) is arranged in an array along its height direction; one end of each connecting column (311) is fixed to the graphite felt (3) and the other end is fixed to the corresponding connecting strip (312).

5. The sleeve with adaptive optical rod diameter according to claim 4, characterized in that: The connecting member (31) and the expanding member (5) are arranged alternately. The expanding member (5) comprises a plurality of sleeve rings (51) and a plurality of expanding rods (52). The sleeve ring (51) is fixed to one end of the expanding rod (52) and sleeved on the telescopic spring (42). The expanding rod (52) is arranged to slide radially along the sealing cylinder (11) and extends out of the sealing cylinder (11). A plurality of the expanding rods (52) are arranged in a circular array along the sealing cylinder (11). A plurality of the expanding rods (52) are also arranged in a vertical array along the axis of the sealing cylinder (11). The number of the expanding rods (52) corresponds to the number of the connecting columns (311).

6. The sleeve with adaptive optical rod diameter according to claim 5, characterized in that: The expansion member (5) further comprises a plurality of operating handles (53) arranged opposite to each other. The operating handles (53) are arranged opposite to each other on both sides of the sealing cylinder (11) and are also arranged in a vertical array along the axis of the sealing cylinder (11). The operating handles (53) are arc-shaped and the inner side is fixed to the other end of the plurality of expansion rods (52) on the same layer.

7. The sleeve with adaptive optical rod diameter according to claim 6, characterized in that: The adjusting member (6) comprises an adjusting rod (61) and an adjusting block (62); the adjusting block (62) is fixed to one end of the top of the telescopic spring (42) and is slidably arranged on the top of the sealing cylinder (11); the adjusting rod (61) is threadedly connected to the adjusting block (62) and controls the sliding of the adjusting block (62); the sliding direction of the adjusting block (62) is tangent to the outer diameter of the telescopic spring (42).

8. The sleeve with adaptive optical rod diameter according to claim 7, characterized in that: The adjusting member (6) further comprises a shielding block (63), wherein the shielding block (63) is arranged outside the top of the sealing cylinder (11) and corresponds to the adjusting rod (61), and the top of the shielding block (63) is hingedly connected to the sealing cylinder (11).

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