Fixture for glass optical fiber drawing heating furnace

Abstract

The utility model discloses a fixture for a glass optical fiber drawing heating furnace, which is applied to the field of optical fiber production and comprises a shell, a bottom plate is bolted at the bottom of the shell, a furnace cover covers the top of the shell, a fixed tube is fixedly sleeved on the inner walls of the bottom plate and the shell, and an optical shaft is slidably sleeved on the inner wall of the fixed tube; by rotating the rotating cylinder, the clamping head is separated from the clamping hole, the optical shaft is taken out, the required optical shaft is mounted, the clamping head is clamped with the clamping hole under the action of the first spring, and the clamping head and the clamping hole are fixed, so that the purpose of using preforms with different sizes can be achieved, the production cost is reduced, and the practicability and the applicability are improved; by moving the clamping rod, the clamping rod is separated from the fixing groove, the fixing rod is separated from the fixing hole under the action of the third spring, and the cover plate is opened for maintenance, so that the purpose of facilitating maintenance can be achieved, the workload is reduced, and the maintenance efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of optical fiber production, especially relates to a clamp for glass optical fiber drawing heating furnace. BACKGROUND

[0002] Through searching Chinese patent, the announcement number is: CN218089362U, a kind of optical fiber drawing heating furnace, including furnace body, center tube and muffle tube, the center tube and muffle tube are installed in the furnace body and the muffle tube is located below the center tube, the outer side of the center tube is sleeved with heat preservation cylinder, the outer side of the heat preservation cylinder is provided with heating coil, sealing assembly is arranged between the center tube and the furnace body, the sealing assembly is provided with air hole for passing into inert gas into furnace body, the outer side of the muffle tube is sleeved with heat preservation piece.This application has good heat preservation performance, the quality of drawn optical fiber is high and stable, and ordinary inert gas can be used, which reduces production cost.

[0003] The existing heating furnace cannot be used for different sizes of preform rods. The optical axis size in the general heating furnace is fixed, which causes the use of only fixed size preform rods. If different size preform rods need to be used, the corresponding heating furnace needs to be replaced, which increases the production cost, reduces the practicability and applicability, and is not convenient to maintain. The preform furnace needs to be maintained regularly during use. When maintaining, the furnace cover needs to be opened. The furnace cover is fixed by multiple bolts. When assembling and disassembling, tools are needed for disassembly and assembly. The disassembly and assembly process is relatively cumbersome, which increases the workload and reduces the maintenance efficiency. In order to solve the above problems, a clamp for glass optical fiber drawing heating furnace is proposed. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of clamp for glass optical fiber drawing heating furnace, its advantage is that different size preform rods can be used and it is convenient to maintain.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a clamp for glass optical fiber drawing heating furnace, including shell, the bottom of the shell is bolted with bottom plate, the top of the shell is covered with furnace cover, the inner wall of the bottom plate and shell is fixedly sleeved with fixed tube, the inner wall of the fixed tube is slidably sleeved with optical axis, the surface of the optical axis is slidably sleeved with fixed cylinder, and the surface of the fixed cylinder is bolted with the surface of the furnace cover, the surface of the fixed cylinder is rotatably sleeved with rotating cylinder, the inner wall of the rotating cylinder is hinged with connecting rod, the other end of the connecting rod is hinged with clamping head, the first spring is arranged between the clamping head and the inner wall of the fixed cylinder, the surface of the optical axis is provided with clamping hole, and the clamping hole is clamped with the clamping head.

[0006] By adopting the above technical solution, the clamping connector is disengaged from the clamping hole by rotating the rotating cylinder, the optical shaft is taken out, and the required optical shaft is installed. The clamping connector is engaged with the clamping hole under the action of the first spring, thus fixing it. This method can achieve the purpose of using precast bars of different sizes, reducing production costs and improving practicality and applicability.

[0007] The present invention is further configured such that: a fixing rod is slidably sleeved on the inner wall of the outer shell; a fixing hole is provided on the surface of the furnace cover, and the fixing hole is engaged with one end of the fixing rod; a snap-fit ​​rod is slidably sleeved on the inner wall of the outer shell; a limiting plate is fixedly sleeved on the surface of the snap-fit ​​rod; a second spring is provided between the limiting plate and the inner wall of the outer shell; and a fixing groove is provided on the surface of the fixing rod, and the fixing groove is engaged with the snap-fit ​​rod.

[0008] By adopting the above technical solution, the locking rod is disengaged from the fixing groove by moving the locking rod, and the fixing rod is disengaged from the fixing hole by the third spring, allowing the cover plate to be opened for maintenance. This method can facilitate maintenance, reduce workload, and improve maintenance efficiency.

[0009] The present invention is further configured such that: a furnace core shell is fixedly sleeved on the surface of the fixed tube, and a heating tube is bolted to the inner wall of the furnace core shell.

[0010] The above technical solution involves heating the preformed rods by setting up a furnace core shell and heating tubes.

[0011] The present invention is further configured such that: the inner wall between the furnace core shell and the outer shell is filled with heat-insulating material.

[0012] By adopting the above technical solution, heat preservation is achieved by setting up insulation materials.

[0013] The present invention is further provided that the surface of the rotating cylinder is provided with anti-slip texture.

[0014] By adopting the above technical solution, anti-slip texture is set to prevent hand slippage and facilitate operation.

[0015] The present invention is further configured such that one end of both the snap-fit ​​connector and the snap-fit ​​rod is wedge-shaped.

[0016] By adopting the above technical solution, and by setting one end of both the snap-fit ​​connector and the snap-fit ​​rod to be wedge-shaped, it is easy to fix the optical axis and the furnace cover.

[0017] The present invention is further configured such that a third spring is sleeved on the surface of the fixing rod.

[0018] By adopting the above technical solution, a third spring is provided to facilitate the separation of the fixing rod from the fixing hole.

[0019] The present invention is further configured such that a sealing gasket is provided between the furnace cover and the outer shell.

[0020] By adopting the above technical solution, the sealing performance is improved by setting a sealing gasket.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This utility model uses a rotating cylinder to disengage the snap-fit ​​connector from the snap-fit ​​hole, allowing the optical shaft to be removed and the required optical shaft to be installed. The snap-fit ​​connector engages with the snap-fit ​​hole under the action of the first spring, thus fixing it in place. This method can be used for precast bars of different sizes, reducing production costs and improving practicality and applicability.

[0023] 2. This utility model achieves the purpose of convenient maintenance, reduces workload, and improves maintenance efficiency by moving the locking rod to disengage it from the fixing groove, and the fixing rod disengages from the fixing hole under the action of the third spring, thus opening the cover plate for maintenance. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a bottom view sectional view of a partial structure of this utility model;

[0027] Figure 4 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0028] Figure 5 This is a utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0029] Reference numerals in the attached drawings: 1. Outer shell; 2. Base plate; 3. Furnace cover; 4. Fixing tube; 5. Optical axis; 6. Fixing cylinder; 7. Rotating cylinder; 8. Connecting rod; 9. Snap-fit ​​connector; 10. First spring; 11. Snap-fit ​​hole; 12. Fixing rod; 13. Fixing hole; 14. Snap-fit ​​rod; 15. Limiting plate; 16. Second spring; 17. Fixing groove; 18. Furnace core shell; 19. Heating tube; 20. Insulation material; 21. Anti-slip texture; 22. Third spring; 23. Sealing gasket. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] refer to Figure 1 ,Figure 2 , Figure 3 and Figure 4 A fixture for a glass fiber drawing heating furnace includes a housing 1, a base plate 2 bolted to the bottom of the housing 1, a furnace cover 3 covering the top of the housing 1, a fixing tube 4 fixedly sleeved between the base plate 2 and the inner wall of the housing 1, an optical axis 5 slidably sleeved on the inner wall of the fixing tube 4, a fixing cylinder 6 slidably sleeved on the surface of the optical axis 5 and bolted to the surface of the furnace cover 3, a rotating cylinder 7 rotatably sleeved on the surface of the fixing cylinder 6, a connecting rod 8 hinged to the inner wall of the rotating cylinder 7, and a clamping connector 9 hinged to the other end of the connecting rod 8. A first spring 10 is provided between the snap-fit ​​connector 9 and the inner wall of the fixing cylinder 6. The surface of the optical shaft 5 is provided with a snap-fit ​​hole 11, and the snap-fit ​​hole 11 is snapped into the snap-fit ​​connector 9. By rotating the rotating cylinder 7, the snap-fit ​​connector 9 is disengaged from the snap-fit ​​hole 11, the optical shaft 5 is taken out, and the required optical shaft 5 is installed. The snap-fit ​​connector 9 is snapped into the snap-fit ​​hole 11 under the action of the first spring 10. This method of fixing can achieve the purpose of using precast bars of different sizes, reduce production costs, and improve practicality and applicability.

[0033] refer to Figure 2 A furnace core shell 18 is fixedly sleeved on the surface of the fixed tube 4, and a heating tube 19 is bolted to the inner wall of the furnace core shell 18. The preform is heated by setting the furnace core shell 18 and the heating tube 19.

[0034] refer to Figure 2 The inner wall of the furnace core shell 18 and the outer shell 1 is filled with heat insulation material 20. By setting the heat insulation material 20, heat preservation is achieved.

[0035] refer to Figure 3 The surface of the rotating cylinder 7 is provided with anti-slip texture 21. By setting the anti-slip texture 21, the hand slips and the operation is facilitated.

[0036] Example 2:

[0037] refer to Figure 1 , Figure 2 and Figure 5 A fixing rod 12 is slidably sleeved on the inner wall of the outer shell 1. A fixing hole 13 is opened on the surface of the furnace cover 3, and the fixing hole 13 is engaged with one end of the fixing rod 12. A snap-fit ​​rod 14 is slidably sleeved on the inner wall of the outer shell 1. A limit plate 15 is fixedly sleeved on the surface of the snap-fit ​​rod 14. A second spring 16 is provided between the limit plate 15 and the inner wall of the outer shell 1. A fixing groove 17 is opened on the surface of the fixing rod 12, and the fixing groove 17 is engaged with the snap-fit ​​rod 14. By moving the snap-fit ​​rod 14, the snap-fit ​​rod 14 is disengaged from the fixing groove 17. Under the action of the third spring 22, the fixing rod 12 is disengaged from the fixing hole 13. The method of opening the cover for maintenance can achieve the purpose of convenient maintenance, reduce the workload, and improve the maintenance efficiency.

[0038] refer to Figure 4and Figure 5 Both the snap connector 9 and the snap rod 14 have a wedge-shaped end, which facilitates the fixing of the optical axis 5 and the furnace cover 3.

[0039] refer to Figure 1 and Figure 5 A third spring 22 is fitted on the surface of the fixing rod 12. By setting the third spring 22, it is easy to disengage the fixing rod 12 from the fixing hole 13.

[0040] refer to Figure 2 and Figure 5 A sealing gasket 23 is provided between the furnace cover 3 and the outer shell 1. The sealing performance is improved by providing the sealing gasket 23.

[0041] Brief description of the usage process: Rotate the rotating cylinder 7, which drives the connecting rod 8 to move. The movement of the connecting rod 8 drives the snap-fit ​​connector 9 to move, causing the snap-fit ​​connector 9 to disengage from the snap-fit ​​hole 11. Remove the optical shaft 5 from the fixed tube 4, and then insert the required optical shaft 5 into the fixed tube 4. The snap-fit ​​connector 9 engages with the snap-fit ​​hole 11 under the action of the first spring 10, fixing it in place. This eliminates the need to replace the entire heating furnace, thus achieving the purpose of using preforms of different sizes. Move the snap-fit ​​rod 14 to disengage from the fixed groove 17. The fixed rod 12 disengages from the fixed hole 13 under the action of the third spring 22. Remove the cover plate for maintenance. After maintenance, replace the cover plate. Move the fixed rod 12 to engage with the fixed hole 13. The snap-fit ​​rod 14 engages with the fixed groove 17 under the action of the second spring 16, fixing the fixed rod 12 in place. This completes the maintenance, thus facilitating the maintenance process.

[0042] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A fixture for a glass fiber drawing heating furnace, comprising a housing (1), characterized in that, A base plate (2) is bolted to the bottom of the outer shell (1), and a furnace cover (3) is provided on the top of the outer shell (1). A fixing tube (4) is fixedly sleeved on the inner wall of the base plate (2) and the outer shell (1). An optical axis (5) is slidably sleeved on the inner wall of the fixing tube (4). A fixing cylinder (6) is slidably sleeved on the surface of the optical axis (5), and the fixing cylinder (6) is bolted to the surface of the furnace cover (3). A rotating cylinder (7) is rotatably sleeved on the surface of the fixing cylinder (6). A connecting rod (8) is hinged to the inner wall of the rotating cylinder (7). A snap-fit ​​connector (9) is hinged to the other end of the connecting rod (8). A first spring (10) is provided between the snap-fit ​​connector (9) and the inner wall of the fixing cylinder (6). A snap-fit ​​hole (11) is opened on the surface of the optical axis (5), and the snap-fit ​​hole (11) snaps into the snap-fit ​​connector (9).

2. The fixture for a glass fiber drawing heating furnace according to claim 1, characterized in that, A fixing rod (12) is slidably sleeved on the inner wall of the outer shell (1). A fixing hole (13) is opened on the surface of the furnace cover (3), and the fixing hole (13) is engaged with one end of the fixing rod (12). A snap-fit ​​rod (14) is slidably sleeved on the inner wall of the outer shell (1). A limiting plate (15) is fixedly sleeved on the surface of the snap-fit ​​rod (14). A second spring (16) is provided between the limiting plate (15) and the inner wall of the outer shell (1). A fixing groove (17) is opened on the surface of the fixing rod (12), and the fixing groove (17) is engaged with the snap-fit ​​rod (14).

3. The fixture for a glass fiber drawing heating furnace according to claim 1, characterized in that, The surface of the fixed tube (4) is fixedly sleeved with a furnace core shell (18), and a heating tube (19) is bolted to the inner wall of the furnace core shell (18).

4. A fixture for a glass fiber drawing heating furnace according to claim 3, characterized in that, The inner wall of the furnace core shell (18) and the outer shell (1) is filled with thermal insulation material (20).

5. A fixture for a glass fiber drawing heating furnace according to claim 1, characterized in that, The surface of the rotating cylinder (7) is provided with anti-slip texture (21).

6. A fixture for a glass fiber drawing heating furnace according to claim 2, characterized in that, Both the snap-fit ​​connector (9) and the snap-fit ​​rod (14) have a wedge shape at one end.

7. A fixture for a glass fiber drawing heating furnace according to claim 2, characterized in that, A third spring (22) is fitted onto the surface of the fixing rod (12).

8. A fixture for a glass fiber drawing heating furnace according to claim 1, characterized in that, A sealing gasket (23) is provided between the furnace cover (3) and the outer shell (1).

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