Graphite piece extracting device for optical fiber drawing furnace

Abstract

The utility model relates to the technical field of optical fiber drawing, and discloses a graphite piece extracting device for an optical fiber drawing furnace. The graphite piece extracting device for the optical fiber drawing furnace comprises an outer sleeve rod, the outer sleeve rod is of a hollow structure, and a sliding assembly used for sliding displacement is installed in an inner cavity of the outer sleeve rod; the top of the outer sleeve rod is provided with a compressed spring assembly used for resetting, and the compressed spring assembly is arranged above the sliding assembly. The device is inserted into a lower support, the lower part of the device penetrates through a central hole of the lower support, then a first locking nut at the top of the device is loosened, at the moment, the compressed spring which is extruded originally can restore to the original shape, the compressed spring gasket located at the top is extruded, and then the whole lead screw is driven to move upwards. And the support frame is separated from the inner cavity of the fixed gasket and is naturally unfolded due to the gravity effect. The supporting frame is in contact with the lower edge of the center hole in the bottom of the lower support after being unfolded, and the graphite piece lower support can be taken out smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber drawing, in particular to a graphite piece extraction device used for an optical fiber drawing furnace. Background Art

[0002] Fiber optic drawing is a process in which a drawing machine melts a preform rod at high temperature and draws it into an optical fiber with an outer diameter of 125 microns. The quartz fiber optic drawing machine is more than 10 meters high. The preform rod is installed in a heating furnace at the top of the drawing machine. When the furnace temperature rises to about 2200 degrees, the viscosity of the tip of the rod becomes lower, and it gradually droops and becomes thinner by its own weight to become a bare optical fiber. The bare optical fiber passes through a laser diameter measuring monitor and then enters the coating and curing system. The coated optical fiber is then pulled onto the reel via a traction roller.

[0003] Since the lower support of the graphite part is large in size and generally has a high temperature, an additional extraction rod is required for operation. However, during operation, the existing extraction rods require multiple sets of rod bodies to contact and fix the edges of the lower support of the graphite part, which makes the operation difficult. After extraction, the rod body also needs to be separated from the lower support of the graphite part, which also takes a certain amount of time and affects the efficiency of graphite extraction. Utility Model Content

[0004] In view of this, the utility model aims to provide a graphite parts extraction device for an optical fiber drawing furnace, in order to solve at least one of the above-mentioned technical problems.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A graphite piece extraction device for an optical fiber drawing furnace comprises an outer sleeve rod, the outer sleeve rod is a hollow structure and a sliding assembly for sliding displacement is installed in the inner cavity of the outer sleeve rod;

[0007] A compression spring assembly for resetting is installed on the top of the outer sleeve rod, and the compression spring assembly is arranged above the sliding assembly;

[0008] The outer wall of the outer sleeve rod is welded with a support assembly for clamping and fixing, and the support assembly is installed on the outer side of the sliding assembly.

[0009] As a preferred technical solution of the utility model, the sliding assembly includes a lead screw, which is slidably connected in the inner cavity of the outer sleeve rod, and a first locking nut is installed on the top of the lead screw.

[0010] As a preferred technical solution of the present invention, a second locking nut is installed on the outer wall of the bottom of the screw, there are two groups of the second locking nuts and they are located on both sides of the screw, and fixing washers are installed between the second locking nuts, there are two groups of the fixing washers and they are located on both sides of the screw.

[0011] It can be known from the above technical solution that the first locking nut at the top of the pressing device causes the bottom lead screw to move downward as a whole. Compression spring washers are installed at the bottom of the first locking nut and the top of the outer rod, and a compression spring is arranged between the compression spring washers. During the downward movement of the lead screw, the compression spring will be squeezed, so that the compression spring is in a compressed state. A fixed washer is arranged at the bottom of the lead screw. During the downward movement of the lead screw, the fixed washer at the bottom will move downward, thereby squeezing the support frame, and the support frame and the three-claw base are rotatably connected by bolts, so that the support frame contracts and rotates in the direction close to the outer rod. The second locking nut can limit the position of the fixed washer to prevent the fixed washer from moving.

[0012] As a preferred technical solution of the utility model, the compression spring assembly includes a compression spring, which is sleeved on the outer ring of the lead screw, and a compression spring gasket is installed between the bottom of the first locking nut and the top of the outer sleeve rod, and the two ends of the compression spring are fixedly connected to the compression spring gaskets located at the top and bottom respectively.

[0013] As the preferred technical solution of the utility model, the support assembly includes a three-claw base, the outer rod is made of stainless steel and is welded and fixed to the three-claw base, the bottom of the three-claw base is rotatably connected to a support frame, and there are two groups of three-claw bases and support frames distributed on both sides of the outer rod.

[0014] As a preferred technical solution of the utility model, the three-claw base and the support frame are rotationally connected by bolts, and the rotation connection between the three-claw base and the support frame is at the same height as the fixed gasket.

[0015] Through the above technical solution, it can be known that the device is inserted into the lower support, and the lower part of the device is passed through the center hole of the lower support. Then the first locking nut on the top of the device is loosened. At this time, the originally squeezed compression spring will return to its original state, squeezing the compression spring gasket at the top, thereby driving the lead screw to move upward as a whole. During the upward movement of the lead screw, the support frame is separated from the inner cavity of the fixed gasket and naturally unfolds due to the influence of gravity. After the support frame is unfolded, it contacts the lower edge of the center hole at the bottom of the lower support, and the device is moved upward as a whole, so that the graphite lower support can be smoothly removed.

[0016] As a preferred technical solution of the utility model, a side of the support frame close to the fixed gasket is provided with a rounded structure that matches the gap size between the fixed gaskets, and a side of the support frame away from the outer sleeve rod is provided with an inclined surface.

[0017] It can be seen from the above technical solution that the existence of the inclined surface makes it easier to clamp the lower support, and the rounded corner structure also makes it easier for the support frame to rotate between the fixed gaskets.

[0018] As a preferred technical solution of the utility model, a gasket is installed on the outer wall of the lead screw, and the gasket is arranged on both sides of the lead screw and located in the gap between the fixed gaskets.

[0019] It can be seen from the above technical solution that the presence of the gasket can provide certain protection for the rotation of the support frame.

[0020] Compared with the prior art, the device for extracting graphite parts from an optical fiber drawing furnace described in the utility model has the following beneficial effects:

[0021] 1) The utility model cooperates with the lead screw and the support frame, and the device is inserted into the lower support, and the lower part of the device passes through the center hole of the lower support. Then, the first locking nut on the top of the device is loosened. At this time, the originally squeezed compression spring will return to its original state, squeezing the compression spring gasket at the top, thereby driving the lead screw to move upward as a whole. The support frame is separated from the inner cavity of the fixed gasket and unfolds naturally due to the influence of gravity. After the support frame is unfolded, it contacts the lower edge of the center hole at the bottom of the lower support, and the graphite lower support can be smoothly taken out. Through the operation of the compression spring and the lead screw, the whole process of extraction and resetting can be realized, and at the same time, the operation of disassembling and assembling the graphite lower support is avoided, which saves time and improves the working efficiency of the device.

[0022] 2) The utility model cooperates with the support frame and the three-claw base to press the first locking nut at the top of the device, so that the bottom lead screw moves downward as a whole. During the downward movement of the lead screw, the fixed gasket at the bottom moves downward, thereby squeezing the support frame, and the support frame and the three-claw base are connected by bolts, so that the support frame shrinks and rotates in the direction close to the outer rod. The size of the bottom of the device is reduced, and it can be inserted into the lower support to fix the lower support, which is also convenient for subsequent extraction tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the graphite piece extraction device according to an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the three-claw base part described in an embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the graphite parts extraction device in the state where the lead screw is pressed down according to an embodiment of the utility model;

[0027] Figure 4This is a schematic diagram of the structure of the three-claw base part in the downward pressing state of the screw according to an embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1. Outer rod; 2. Lead screw; 3. First locking nut; 4. Second locking nut; 5. Fixed washer; 6. Compression spring; 7. Compression spring washer; 8. Three-claw base; 9. Support frame; 10. Inclined surface; 11. Washer ring. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0034] like Figure 1-3 As shown: a graphite piece extraction device for an optical fiber drawing furnace, comprising an outer sleeve rod 1, the outer sleeve rod 1 is a hollow structure and a sliding assembly for sliding displacement is installed in the inner cavity of the outer sleeve rod 1;

[0035] A compression spring assembly for resetting is installed on the top of the outer sleeve rod 1, and the compression spring assembly is arranged above the sliding assembly;

[0036] A support assembly for clamping and fixing is welded to the outer wall of the outer sleeve rod 1, and the support assembly is installed on the outer side of the sliding assembly.

[0037] The sliding assembly includes a screw 2, which is slidably connected in the inner cavity of the outer sleeve rod 1. A first locking nut 3 is installed on the top of the screw 2, and a second locking nut 4 is installed on the outer wall of the bottom of the screw 2. There are two groups of second locking nuts 4 and they are located on both sides of the screw 2. Fixed gaskets 5 are installed between the second locking nuts 4. There are two groups of fixed gaskets 5 and they are located on both sides of the screw 2.

[0038] In the embodiment of the utility model, when extracting the lower support of the graphite part, the device is first moved to the top of the lower support of the graphite part, and the first locking nut 3 at the top of the device is pressed to make the bottom lead screw 2 move downward as a whole. During the downward movement of the lead screw 2, the fixed gasket 5 at the bottom moves downward, thereby squeezing the support frame 9, and the support frame 9 is connected to the three-claw base 8 by bolts, so that the support frame 9 shrinks and rotates in the direction close to the outer rod 1.

[0039] like Figure 1-4 As shown: the compression spring assembly includes a compression spring 6, which is sleeved on the outer ring of the lead screw 2, and a compression spring gasket 7 is installed between the bottom of the first locking nut 3 and the top of the outer sleeve rod 1, and the two ends of the compression spring 6 are fixedly connected to the compression spring gasket 7 located at the top and bottom respectively.

[0040] The supporting assembly includes a three-claw base 8, the outer sleeve rod 1 is made of stainless steel and is welded and fixed to the three-claw base 8, the bottom of the three-claw base 8 is rotatably connected to a support frame 9, there are two groups of three-claw bases 8 and support frames 9 and are distributed on both sides of the outer sleeve rod 1, the three-claw base 8 and the support frame 9 are rotatably connected by bolts, the rotating connection between the three-claw base 8 and the support frame 9 is at the same height as the fixed gasket 5, the side of the support frame 9 close to the fixed gasket 5 is provided with a rounded structure and matches the gap size between the fixed gasket 5, the side of the support frame 9 away from the outer sleeve rod 1 is provided with an inclined surface 10, the outer wall of the screw 2 is installed with a gasket 11, the gasket 11 is arranged on both sides of the screw 2 and is located in the gap position between the fixed gaskets 5.

[0041] In the embodiment of the utility model, the device is inserted into the lower support, and the lower part of the device is passed through the center hole of the lower support. Then, the first locking nut 3 on the top of the device is loosened. At this time, the originally squeezed compression spring 6 will return to its original state, squeezing the compression spring gasket 7 at the top, thereby driving the lead screw 2 to move upward as a whole. During the upward movement of the lead screw 2, the support frame 9 is separated from the inner cavity of the fixed gasket 5, and is naturally unfolded due to the influence of gravity. After the support frame 9 is unfolded, it contacts the lower edge of the center hole at the bottom of the lower support, and the device is moved upward as a whole, so that the graphite lower support can be smoothly taken out. Through the operation of the compression spring 6 and the lead screw 2, the whole process of extraction and resetting can be realized, and at the same time, the operation of disassembling and assembling the graphite lower support is avoided, which saves time and improves the working efficiency of the device.

[0042] When in use, when extracting the support under the graphite part, first move the device to just above the support under the graphite part, press the first locking nut 3 at the top of the device, so that the lead screw 2 at the bottom moves downward as a whole.

[0043] Compression spring washers 7 are installed between the bottom of the first locking nut 3 and the top of the outer sleeve rod 1, and compression springs 6 are arranged between the compression spring washers 7. When the lead screw 2 moves downward, the compression spring 6 will be squeezed so that the compression spring 6 is in a compressed state.

[0044] A fixed gasket 5 is provided at the bottom of the screw 2. When the screw 2 moves downward, the fixed gasket 5 at the bottom will move downward, thereby squeezing the support frame 9. The support frame 9 and the three-claw base 8 are rotatably connected by bolts, so that the support frame 9 contracts and rotates in the direction close to the outer rod 1.

[0045] The second locking nut 4 can limit the position of the fixing gasket 5 to prevent the fixing gasket 5 from moving.

[0046] Then the device is inserted into the lower support, and the lower part of the device is passed through the central hole of the lower support, and then the first locking nut 3 on the top of the device is loosened, at which time the originally squeezed compression spring 6 will return to its original state, squeezing the compression spring gasket 7 at the top, thereby driving the lead screw 2 to move upward as a whole. During the upward movement of the lead screw 2, the support frame 9 is separated from the inner cavity of the fixed gasket 5 and is naturally unfolded due to the influence of gravity.

[0047] After the support frame 9 is unfolded, it contacts the lower edge of the center hole at the bottom of the lower support, and the device is moved upward as a whole, so that the graphite lower support can be smoothly taken out. Through the operation of the compression spring 6 and the lead screw 2, the whole process of extraction and resetting can be realized, and the operation of disassembling and assembling the graphite lower support is also avoided, which saves time and improves the working efficiency of the device.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A graphite piece extraction device for an optical fiber drawing furnace, comprising an outer sleeve rod (1), characterized in that: The outer sleeve rod (1) is a hollow structure and a sliding component for sliding displacement is installed in the inner cavity of the outer sleeve rod (1); A compression spring assembly for resetting is installed on the top of the outer sleeve rod (1), and the compression spring assembly is arranged above the sliding assembly; A support assembly for clamping and fixing is welded to the outer wall of the outer sleeve rod (1), and the support assembly is installed on the outer side of the sliding assembly.

2. The device for extracting graphite parts from an optical fiber drawing furnace according to claim 1, characterized in that: The sliding assembly comprises a lead screw (2), the lead screw (2) is slidably connected in the inner cavity of the outer sleeve (1), and a first locking nut (3) is installed on the top of the lead screw (2).

3. The device for extracting graphite parts from an optical fiber drawing furnace according to claim 2, characterized in that: A second locking nut (4) is installed on the outer wall at the bottom of the lead screw (2), and there are two sets of the second locking nuts (4) located on both sides of the lead screw (2). A fixing gasket (5) is installed between the second locking nuts (4), and there are two sets of the fixing gasket (5) located on both sides of the lead screw (2).

4. The device for extracting graphite parts from an optical fiber drawing furnace according to claim 2, characterized in that: The compression spring assembly comprises a compression spring (6), wherein the compression spring (6) is sleeved on the outer ring of the lead screw (2), a compression spring gasket (7) is installed between the bottom of the first locking nut (3) and the top of the outer sleeve rod (1), and the two ends of the compression spring (6) are fixedly connected to the compression spring gasket (7) located at the top and the bottom, respectively.

5. The device for extracting graphite parts from an optical fiber drawing furnace according to claim 1, characterized in that: The support assembly comprises a three-claw base (8), the outer sleeve rod (1) is made of stainless steel and is welded and fixed to the three-claw base (8), the bottom of the three-claw base (8) is rotatably connected to a support frame (9), and there are two groups of the three-claw base (8) and the support frame (9) and they are distributed on both sides of the outer sleeve rod (1).

6. The device for extracting graphite parts from an optical fiber drawing furnace according to claim 5, characterized in that: The three-claw base (8) and the support frame (9) are rotatably connected via bolts, and the rotatably connected portion of the three-claw base (8) and the support frame (9) is at the same height as the fixed gasket (5).

7. The device for extracting graphite parts from an optical fiber drawing furnace according to claim 5, characterized in that: The side of the support frame (9) close to the fixed gasket (5) is provided with a rounded structure and matches the gap size between the fixed gasket (5), and the side of the support frame (9) away from the outer sleeve rod (1) is provided with an inclined surface (10).

8. The device for extracting graphite parts from an optical fiber drawing furnace according to claim 2, characterized in that: A gasket (11) is installed on the outer wall of the lead screw (2), and the gasket (11) is arranged on both sides of the lead screw (2) and located in the gap between the fixed gaskets (5).

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