Graphite ring for heating optical device and graphite heating device for processing optical device

Abstract

The invention discloses a graphite ring for heating an optical device and a graphite heating device for processing the optical device, and relates to the field of graphite heating in the optical device manufacturing industry. The graphite ring for heating the optical device comprises two closed circular ring bodies which are coaxial and arranged at an interval, the first ends of the two closed circular ring bodies are connected through a connecting arm, the connecting arm is arranged parallel to the axial direction of the two closed circular ring bodies, and the second ends of the two closed circular ring bodies are provided with a positive electrode pin and a negative electrode pin respectively. The graphite heating device for processing the optical device comprises a base, a graphite heating part, a water cooling part and a heat preservation part, wherein the graphite heating part comprises the graphite ring for heating the optical device. An optical device is processed based on a graphite heating source, and the water cooling part and the heat preservation part are arranged around the graphite heating part, so that a stable heat source temperature field can be quickly and accurately provided, the external part is basically free of temperature radiation influence, the graphite heating life can be prolonged, the waste of consumables is avoided, and a product with the maximum outer diameter of 3mm can be heated and drawn in the working range.

Description

Technical Field

[0001] The present invention belongs to the field of optoelectronic communication, relates to the graphite heating technology in the optical device manufacturing industry, and particularly relates to a graphite ring for heating an optical device and a graphite heating device for processing an optical device including the graphite ring. Background Art

[0002] In the core process link of the optical device manufacturing industry, the heat sources are mainly traditional hydrogen-oxygen flame and graphite heating. The temperature field of the traditional hydrogen-oxygen flame heat source fluctuates unstably, resulting in low processing accuracy and production efficiency of optical devices, high cost of gas source consumables, and a relatively large overall volume of the equipment. Therefore, the graphite heating heat source is becoming more and more popular.

[0003] Currently, the mainstream graphite heating technology at home and abroad is the graphite filament heating technology, which uses an "Ω"-shaped graphite ring with an opening. As Figure 1 shown, when in use, the opening of the "Ω"-shaped graphite ring faces upward, and the electrodes on both sides of the opening of the "Ω"-shaped graphite ring are clamped from both sides, and scanned left and right to heat the molten optical fiber inside the ring; however, when the "Ω"-shaped graphite ring is heated in the vertical direction, the temperature field will be uneven due to the opening part, making it difficult to process. Moreover, the "Ω"-shaped graphite ring is a graphite heat source with a small fiber diameter, has a short service life, and the longest continuous service life is only 200 minutes on average. The consumable price is expensive, and it can only heat and draw products with an outer diameter of 1.5 mm at most, and it is difficult to meet the processing requirements of modern optical devices under some special working conditions.

[0004] Based on the above problems, the present invention proposes a new graphite ring for heating an optical device and a graphite heating device for processing an optical device including the graphite ring to meet the processing requirements of modern optical devices. Summary of the Invention

[0005] The purpose of the present invention is to provide a new graphite ring for heating an optical device and a graphite heating device for processing an optical device including the graphite ring. The graphite ring for heating an optical device adopts a closed circular ring structure, which can quickly and accurately provide a stable heat source temperature field on the basis of meeting the vertical heating scenario, ensure the uniformity of the heat source temperature field, reduce the processing difficulty of the device, and extend the continuous service life, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above purpose, the present invention provides the following solutions:

[0007] On the one hand, the present invention provides a graphite ring for heating an optical device, which includes two coaxially arranged and spaced closed circular ring bodies. The first ends of the two closed circular ring bodies are connected by a connecting arm, and the connecting arm is arranged parallel to the axial direction of the two closed circular ring bodies. The second ends of the two closed circular ring bodies are respectively provided with a positive electrode pin and a negative electrode pin. The positive electrode pin and the negative electrode pin are both arranged parallel to the axial direction of the closed circular ring body, and the positive electrode pin and the negative electrode pin are aligned and extend in a direction away from the connecting arm.

[0008] In some embodiments, the first end and the second end are respectively located on two axial intersection lines of the reference section and the side wall of the closed circular ring body, and the reference section passes through the central axes of the two closed circular ring bodies. The connecting arm, the positive electrode pin and the negative electrode pin are all symmetric structures centered on the reference section. The connecting arm and the two closed circular ring bodies are integrally formed, and the outer wall surface of the connecting arm is a cylindrical surface. The two sides of the connecting arm are respectively smoothly transitionally connected to the outer wall surface of the closed circular ring body through a first arc transition surface. The positive electrode pin and the negative electrode pin are respectively integrally formed with the two closed circular ring bodies. The two sides of the positive electrode pin are respectively smoothly transitionally connected to the outer wall surface of the corresponding closed circular ring body through a second arc transition surface, and the two sides of the negative electrode pin are respectively smoothly transitionally connected to the outer wall surface of the corresponding closed circular ring body through the second arc transition surface.

[0009] In some embodiments, the inner diameter φ of the two closed circular ring bodies is 3.2 mm to 4.9 mm; the wall thickness D of the two closed circular ring bodies is 0.5 mm to 0.7 mm; the radius R1 of the connecting arm is 0.75 mm to 1.10 mm; the radius R2 of the first arc transition surface is 0.45 mm to 0.6 mm, and the minimum distance d1 between the two first arc transition surfaces is 0.78 mm to 0.95 mm; the radius R3 of the second arc transition surface is 0.55 mm to 0.65 mm, and the minimum distance d2 between the two second arc transition surfaces is 0.96 mm to 1.02 mm; the thickness t of the positive electrode pin and the negative electrode pin is 1.4 mm to 1.6 mm; the vertical distance L1 from the center of the connecting arm to the central axis of the closed circular ring body is 3.9 mm to 4.5 mm; the vertical distance L2 from the end surface of the positive electrode pin facing away from the connecting arm to the central axis of the closed circular ring body is 5.0 mm to 5.8 mm; the distance d3 between the two closed circular ring bodies is 0.48 mm to 0.55 mm; the axial length d4 of the connecting arm is 3.8 mm to 5.5 mm; the distance d5 between the mutually remote ends of the positive electrode pin and the negative electrode pin is 6.8 mm to 7.5 mm; the depth d6 of the distance between the two closed circular ring bodies is 7.5 mm to 8.2 mm.

[0010] In some embodiments, the axial two ends of the connecting arm are respectively aligned with the outer ends of the two closed toroids; the positive electrode pin and the negative electrode pin respectively extend outwardly from the outer ends of the two closed toroids.

[0011] On the other hand, the present invention provides a graphite heating device for processing optical devices, including a base, a graphite heating part, a water cooling part, and a heat preservation part, wherein:

[0012] The graphite heating part is arranged on the base, and the graphite heating part includes a clamping member one, a clamping member two, an electrode terminal one, an electrode terminal two, and the above-mentioned graphite ring for heating the optical device. The graphite ring for heating the optical device is used for threading the optical device to be processed. The positive electrode pin is fixed by the clamping member one and electrically connected to the clamping member one. The negative electrode pin is fixed by the clamping member two and electrically connected to the clamping member two. The clamping member one and the clamping member two are respectively electrically connected to the electrode terminal one and the electrode terminal two. The electrode terminal one and the electrode terminal two are respectively used for externally connecting the positive voltage and the negative voltage, so as to form a loop load on the graphite ring for heating the optical device and heat the optical device to be processed;

[0013] The water cooling part includes a water cooling cover. An insulating cavity and a water cooling channel are arranged in the water cooling cover. The water cooling channel is located on the outer periphery of the insulating cavity. The water cooling cover is fixed on the base and covers the graphite ring for heating the optical device inside the insulating cavity. An opening communicating with the insulating cavity is arranged on the side wall of the water cooling cover, and the opening is used for the optical device to be processed to penetrate into the graphite ring for heating the optical device. The water cooling channel is used for externally connecting a cooling medium source to cool the outside of the insulating cavity;

[0014] The heat preservation part includes a heat preservation and insulation layer arranged on the inner wall of the insulating cavity. A closed heat preservation cavity is formed in the heat preservation and insulation layer, and the graphite ring for heating the optical device is located in the closed heat preservation cavity.

[0015] In some embodiments, a joint one communicating with the inside of the closed heat preservation cavity is arranged on the water cooling cover, and the joint one is used for externally connecting a constant temperature inert gas source to introduce a constant temperature inert gas into the closed heat preservation cavity.

[0016] In some embodiments, the water cooling cover includes a cover body and a cover plate. The insulating cavity is arranged in the cover body, and both ends of the insulating cavity respectively penetrate through both ends of the cover body. The first end of the cover body is fixedly attached to the base, and the cover plate is arranged at the second end of the cover body to close the insulating cavity. The joint one is arranged on the cover plate.

[0017] In some embodiments, the thermal insulation layer includes a first heat insulation end plate, a second heat insulation end plate, and a closed heat insulation side plate. The closed heat insulation side plate is disposed on the inner sidewall of the heat insulation cavity. The first heat insulation end plate is located at one end of the closed heat insulation side plate facing the base. The tops of the first clamping member and the second clamping member penetrate through the first heat insulation end plate and extend into the interior of the closed heat insulation side plate. The second heat insulation end plate is located at one end of the closed heat insulation side plate facing the cover plate. Capillary pores for the passage of the thermostatic inert gas are formed in the second heat insulation end plate.

[0018] In some embodiments, the cover plate is a C-shaped cover plate with a concave middle portion, so that a gap is formed between the middle portion of the cover plate and the second heat insulation end plate to form a buffer gas cavity. The first joint and the capillary pores are both communicated with the buffer gas cavity.

[0019] In some embodiments, the first clamping member includes:

[0020] A first clamping seat, one end of which is fixedly connected to the first electrode terminal through a clamping member fixing screw, and the other end is connected to the base through the clamping member fixing screw;

[0021] A first clamping block, which is disposed on the first clamping seat;

[0022] A second clamping block, which is detachably connected to the first clamping block through a clamping screw, and the second clamping block can cooperate with the first clamping block to clamp the positive electrode pin;

[0023] The second clamping member includes:

[0024] A second clamping seat, one end of which is fixedly connected to the second electrode terminal through the clamping member fixing screw, and the other end is connected to the base through the clamping member fixing screw; the second clamping seat is arranged side by side with a spacing from the first clamping seat;

[0025] A third clamping block, which is disposed on the second clamping seat;

[0026] A fourth clamping block, which is detachably connected to the third clamping block through the clamping screw, and the fourth clamping block can cooperate with the third clamping block to clamp the negative electrode pin.

[0027] In some embodiments, the graphite heating part further includes a first cable for connecting to the positive pole of the external voltage and a second cable for connecting to the negative pole of the external voltage. The first cable and the second cable are electrically connected to the first electrode terminal and the second electrode terminal respectively.

[0028] In some embodiments, the graphite heating device for optical device processing further includes a cable fixing seat, which is fixed on one side of the water cooling cover. The first cable and the second cable penetrate through the cable fixing seat.

[0029] In some embodiments, the water-cooling channel is a C-shaped water-cooling channel, and both ends of the C-shaped water-cooling channel penetrate through the side wall of the water-cooling cover. A second connector and a third connector are respectively arranged at both ends of the C-shaped water-cooling channel.

[0030] In some embodiments, a cooling medium inlet pipe and a cooling medium outlet pipe are respectively connected to the second connector and the third connector.

[0031] The present invention has achieved the following technical effects compared with the prior art:

[0032] The graphite ring for heating an optical device proposed by the present invention has a simple structure, a small volume, and is easy to process. It adopts a closed circular ring structure. On the basis of satisfying the heating scenario in the vertical direction, it can quickly and accurately provide a stable heat source temperature field, ensure the uniformity of the heat source temperature field, reduce the processing difficulty of the device, extend the continuous service life, and can work continuously without failure for up to 12 hours at most. This not only makes the graphite consumables be utilized efficiently and fully, avoiding waste of consumables, but also the working range can heat and draw products with a maximum outer diameter of 3 mm, solving the problems of the short service life of the existing graphite heating heat source, the longest continuous service life being only 200 minutes, the high price of the consumables, and the maximum ability to heat and draw products with an outer diameter of 1.5 mm.

[0033] The graphite heating device for processing an optical device proposed by the present invention processes the optical device based on the above-mentioned graphite ring for heating an optical device. By configuring a water-cooling part and a heat-insulating part around the graphite heating part, it can not only quickly and accurately provide a stable heat source temperature field, ensure the uniformity of the temperature inside the cavity, isolate the loss of high temperature to the outside, make the outside basically free from the influence of temperature radiation, prevent thermal damage to the outside, but also extend the service life of the graphite heating, and can work continuously without failure for up to 12 hours at most. This not only makes the graphite consumables be utilized efficiently and fully, avoiding waste of consumables, but also the working range can heat and draw products with a maximum outer diameter of 3 mm, solving the problems of the short service life of the existing graphite heating heat source, the longest continuous service life being only 200 minutes, the high price of the consumables, and the maximum ability to heat and draw products with an outer diameter of 1.5 mm.

[0034] The graphite heating device for processing an optical device of the present invention not only has a stable heat source temperature field, a long service life, low consumption of consumables and low cost, but also each component adopts a modular design. While being convenient for disassembly, installation and maintenance, it has a small structural volume and a wide range of applicable scenarios, can overcome the problem of limitations in the operating space of the existing equipment, and can meet the processing requirements of modern optical devices under some special working conditions. Description of the Drawings

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 It is a schematic diagram of the structure and working principle of the existing "Ω"-shaped graphite ring;

[0037] Figure 2 It is a schematic diagram of the overall structure of the graphite ring for heating an optical device disclosed in the embodiment of the present invention;

[0038] Figure 3 It is Figure 2 a side view of the graphite ring for heating an optical device in

[0039] Figure 4 It is Figure 2 a front view of the graphite ring for heating an optical device in

[0040] Figure 5 It is Figure 2 a schematic diagram of parameter markings of the graphite ring for heating an optical device in

[0041] Figure 6 It is a schematic diagram of the overall structure of the graphite heating device for processing an optical device disclosed in the embodiment of the present invention;

[0042] Figure 7 It is Figure 6 a bottom view of

[0043] Figure 8 It is Figure 6 a side view of

[0044] Figure 9 It is Figure 6 a top view of

[0045] Figure 10 It is Figure 7 a schematic diagram of the A-A sectional structure of

[0046] Figure 11 It is Figure 10 a schematic diagram of the C-C sectional structure of

[0047] Figure 12 It is Figure 10 a schematic diagram of the I-I sectional structure of

[0048] Figure 13 It is a schematic diagram of the enlarged structure of the graphite heating part disclosed in the embodiment of the present invention;

[0049] Figure 14Schematic enlarged top - view planar structure of the water - cooling part disclosed in the embodiments of the present invention;

[0050] Figure 15 Schematic enlarged sectional structure of the heat - insulation part disclosed in the embodiments of the present invention;

[0051] Figure 16 Schematic diagram of the structure and installation of the heat - insulation and heat - shielding layer disclosed in the embodiments of the present invention;

[0052] Figure 17 Schematic partial exploded view of the graphite heating part disclosed in the embodiments of the present invention.

[0053] In the figure, the reference numerals are as follows:

[0054] 100, graphite heating device for optical device processing; 200, "Ω" - shaped graphite ring;

[0055] 1, base;

[0056] 2, graphite heating part; 21, graphite ring for optical device heating; 211, closed circular ring body; 212, connecting arm; 213, positive electrode pin; 214, negative electrode pin; 215, reference section plane; 216, first arc transition surface; 217, second arc transition surface; 22, clamping member one; 221, clamping seat one; 222, clamping block one; 223, clamping block two; 23, clamping member two; 231, clamping seat two; 232, clamping block three; 233, clamping block four; 24, electrode terminal one; 25, electrode terminal two; 26, clamping member fixing screw; 27, clamping screw; 28, cable one; 29, cable two; 210, cable fixing screw; 2101, insulating sheath; 2102, wiring adapter sleeve;

[0057] 3, water - cooling part; 31, water - cooling cover; 311, cover body; 312, cover plate; 313, process plug; 32, heat - insulation cavity; 33, water - cooling channel; 34, opening; 35, joint two; 36, joint three; 37, cooling medium inlet pipe; 38, cooling medium outlet pipe;

[0058] 4, heat - insulation part; 41, heat - insulation and heat - shielding layer; 411, first heat - insulation end plate; 412, second heat - insulation end plate; 413, closed heat - insulation side plate; 414, capillary pores; 42, joint one; 43, buffer air cavity;

[0059] 5, cable fixing seat;

[0060] 6, internal hexagonal socket head screw. Detailed implementation manners

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0062] One of the purposes of the present invention is to provide a novel graphite ring for heating an optical device. The graphite ring for heating the optical device adopts a closed ring structure. On the basis of meeting the heating scenario in the vertical direction, it can quickly and accurately provide a stable heat source temperature field, ensure the uniformity of the heat source temperature field, reduce the processing difficulty of the device, and extend the continuous service life to solve the problems existing in the prior art.

[0063] Another purpose of the present invention is to provide a graphite heating device for processing an optical device including the above-mentioned graphite ring for heating the optical device. By configuring a water cooling part and a heat insulation part in the graphite heating part, the heating life of the graphite ring can be extended.

[0064] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] Embodiment 1

[0066] To break through the taper of products with an outer diameter greater than 1.5 mm and overcome problems such as gravity and uneven temperature field existing in the "Ω"-shaped graphite ring 200, this embodiment proposes a graphite ring 21 for heating an optical device. As Figure 2 shown, the graphite ring 21 for heating the optical device includes two coaxially arranged and spaced closed ring bodies 211. The outer diameters, inner diameters, and wall thicknesses of the two closed ring bodies 211 are the same, that is, the structures of the two closed ring bodies 211 are completely identical; the first ends of the two closed ring bodies 211 are connected by a connecting arm 212, and the connecting arm 212 is arranged parallel to the axial direction of the two closed ring bodies 211; the second ends of the two closed ring bodies 211 are respectively provided with a positive electrode pin 213 and a negative electrode pin 214. The positive electrode pin 213 and the negative electrode pin 214 are both arranged parallel to the axial direction of the closed ring body 211. The positive electrode pin 213 and the negative electrode pin 214 have completely the same structure, and the positive electrode pin 213 and the negative electrode pin 214 are arranged in alignment as Figures 2 to 4 shown, and the positive electrode pin 213 and the negative electrode pin 214 both extend in a direction away from the connecting arm 212 to protrude from the closed ring body 211, facilitating clamping by a fixture.

[0067] In some embodiments, as Figure 4As shown, the first end and the second end of the aforementioned closed toroid 211 are respectively located on the two axial (parallel to the axis of the closed toroid 211) intersection lines of the reference section plane 215 and the side wall of the closed toroid 211, and the reference section plane 215 passes through the central axes of the two closed toroids 211. It should be noted that the reference section plane 215 is an auxiliary plane for assisting in understanding the structure of this patent and is not a structural component of the graphite ring 21 for heating the optical device.

[0068] Furthermore, the connecting arm 212, the positive electrode pin 213, and the negative electrode pin 214 are all symmetric structures centered on the reference section plane 215. Based on this, the entire graphite ring 21 for heating the optical device is a symmetric structure centered on the reference section plane 215.

[0069] Furthermore, the connecting arm 212 and the two closed toroids 211 are integrally formed, and the outer wall surface of the connecting arm 212 is preferably a cylindrical surface. The two sides of the connecting arm 212 are respectively and smoothly transitionally connected to the outer wall surface of the closed toroid 211 through the first arc transition surface 216, and the two first arc transition surfaces 216 are symmetric centered on the reference section plane 215; the positive electrode pin 213 and the negative electrode pin 214 are respectively integrally formed with the two closed toroids 211, and the two sides of the positive electrode pin 213 are respectively and smoothly transitionally connected to the outer wall surface of the corresponding closed toroid 211 through the second arc transition surface 217, and the two sides of the negative electrode pin 214 are respectively and smoothly transitionally connected to the outer wall surface of the corresponding closed toroid 211 through the second arc transition surface 217; the second arc transition surfaces 217 on both sides of the negative electrode pin 214 and the second arc transition surfaces 217 on both sides of the positive electrode pin 213 are all symmetric centered on the reference section plane 215.

[0070] In some embodiments, such as Figure 2 and Figure 3 shown, it is preferred that the two axial ends of the connecting arm 212 are respectively aligned with the outer ends of the two closed toroids 211.

[0071] In some embodiments, the mutually remote ends of the positive electrode pin 213 and the negative electrode pin 214 respectively extend outwardly beyond the outer ends of the two closed toroids 211, that is, as Figure 2 and Figure 3 shown, the end of the positive electrode pin 213 remote from the negative electrode pin 214 is longer than the outer end of the corresponding side closed toroid 211, and correspondingly, the end of the negative electrode pin 214 remote from the positive electrode pin 213 is longer than the outer end of the corresponding side closed toroid 211.

[0072] Furthermore, as Figures 2 to 5As shown, in the graphite ring 21 for heating an optical device: the inner diameter φ of the two closed ring bodies 211 can each be 3.2 mm to 4.9 mm; the wall thickness D of the two closed ring bodies 211 can each be 0.5 mm to 0.7 mm; the radius R1 of the connecting arm 212 can be 0.75 mm to 1.10 mm; the radius R2 of the first arc transition surface 216 can be 0.45 mm to 0.6 mm, and the minimum distance d1 between the two first arc transition surfaces 216 (i.e., the length of the line segment connecting the outermost convex points of the two first arc transition surfaces 216) can be 0.78 mm to 0.95 mm; the radius R3 of the second arc transition surface 217 can be 0.55 mm to 0.65 mm, and the minimum distance d2 between the two second arc transition surfaces 217 (i.e., the length of the line segment connecting the outermost convex points of the two second arc transition surfaces 217) can be 0.96 mm to 1.02 mm; the thickness t of the positive electrode pin 213 and the negative electrode pin 214 can each be 1.4 mm to 1.6 mm; the vertical distance L1 from the center of the connecting arm 212 to the central axis of the closed ring body 211 can be 3.9 mm to 4.5 mm; the vertical distance L2 from the end face of the positive electrode pin 213 (or the negative electrode pin 214) facing away from the connecting arm 212 to the central axis of the closed ring body 211 can be 5.0 mm to 5.8 mm; the distance d3 between the two closed ring bodies 211 can be 0.48 mm to 0.55 mm; the axial length d4 of the connecting arm 212 can be 3.8 mm to 5.5 mm; the distance d5 between the mutually remote ends of the positive electrode pin 213 and the negative electrode pin 214 can be 6.8 mm to 7.5 mm; the depth d6 of the distance between the two closed ring bodies 211 can be 7.5 mm to 8.2 mm.

[0073] As a preferred solution, the inner diameter φ of the closed toroid 211 is generally preferably two specifications of 3.60 mm and 4.50 mm. Among them, when the inner diameter φ of the closed toroid 211 is 3.60 mm, the wall thickness D of the two closed toroids 211 is preferably 0.60 mm, the radius R1 of the connecting arm 212 is preferably 1.03 mm, the radius R2 of the first arc transition surface 216 is preferably 0.5 mm, the minimum distance d1 between the two first arc transition surfaces 216 is preferably 0.80 mm, the radius R3 of the second arc transition surface 217 is preferably 0.60 mm, the minimum distance d2 between the two second arc transition surfaces 217 is preferably 0.99 mm, the thickness t of the positive electrode pin 213 and the negative electrode pin 214 is preferably 1.50 mm, the vertical distance L1 from the center of the connecting arm 212 to the central axis of the closed toroid 211 is preferably 4.0 mm, the vertical distance L2 from the end face of the positive electrode pin 213 (or the negative electrode pin 214) facing away from the connecting arm 212 to the central axis of the closed toroid 211 is preferably 5.5 mm; the distance d3 between the two closed toroids 211 is preferably 0.5 mm; the axial length d4 of the connecting arm 212 is preferably 5.0 mm; the distance d5 between the mutually remote ends of the positive electrode pin 213 and the negative electrode pin 214 is preferably 7.0 mm; the depth d6 of the distance between the two closed toroids 211 is preferably 8.0 mm. When the inner diameter φ of the closed toroid 211 is 4.50 mm, the wall thickness D of the two closed toroids 211 is preferably 0.60 mm, the radius R1 of the connecting arm 212 is preferably 0.80 mm, the radius R2 of the first arc transition surface 216 is preferably 0.47 mm, the minimum distance d1 between the two first arc transition surfaces 216 is preferably 0.95 mm, the radius R3 of the second arc transition surface 217 is preferably 0.60 mm, the minimum distance d2 between the two second arc transition surfaces 217 is preferably 0.99 mm, the thickness t of the positive electrode pin 213 and the negative electrode pin 214 is preferably 1.50 mm, the vertical distance L1 from the center of the connecting arm 212 to the central axis of the closed toroid 211 is preferably 4.0 mm, the vertical distance L2 from the end face of the positive electrode pin 213 (or the negative electrode pin 214) facing away from the connecting arm 212 to the central axis of the closed toroid 211 is preferably 5.5 mm; the distance d3 between the two closed toroids 211 is preferably 0.5 mm; the axial length d4 of the connecting arm 212 is preferably 4.0 mm; the distance d5 between the mutually remote ends of the positive electrode pin 213 and the negative electrode pin 214 is preferably 7.0 mm; the depth d6 of the distance between the two closed toroids 211 is preferably 8.0 mm.

[0074] The graphite ring 21 for heating the optical device has a simple structure, small volume, and is easy to process. It adopts a closed ring structure. On the basis of meeting the heating scenario in the vertical direction, it can quickly and accurately provide a stable heat source temperature field, ensure the uniformity of the heat source temperature field, reduce the processing difficulty of the device, and extend the continuous service life. In practical applications, the structure of the graphite ring 21 for heating the optical device can be optimized by referring to the resistance value calculated by Maxwell according to the material characteristics and performing simulations with Ansys.

[0075] Example 2

[0076] Such as Figures 6 to 17As shown in the figure, this embodiment proposes a graphite heating device 100 for optical device processing, which includes a base 1, a graphite heating part 2, a water cooling part 3, and a heat insulation part 4. The graphite heating part 2 is arranged on the base 1. The graphite heating part 2 includes a graphite ring 21 for heating the optical device in Embodiment 1, a clamping part one 22, a clamping part two 23, an electrode terminal one 24, and an electrode terminal two 25. Among them, the graphite ring 21 for heating the optical device is used to pass through the optical device to be processed (generally an optical fiber). The graphite ring 21 for heating the optical device has a positive electrode pin 213 and a negative electrode pin 214. The positive electrode pin 213 is fixed by the clamping part one 22 and is electrically connected to the clamping part one 22. The negative electrode pin 214 is fixed by the clamping part two 23 and is electrically connected to the clamping part two 23. The clamping part one 22 and the clamping part two 23 are respectively electrically connected to the electrode terminal one 24 and the electrode terminal two 25. The electrode terminal one 24 and the electrode terminal two 25 are respectively used to connect to the positive voltage terminal and the negative voltage terminal externally, so as to form a loop load on the graphite ring 21 for heating the optical device and heat the optical device to be processed inside the heating ring. The water cooling part 3 includes a water cooling cover 31. An insulating cavity 32 and a water cooling channel 33 are provided inside the water cooling cover 31. The water cooling channel 33 is located on the outer periphery of the insulating cavity 32. The water cooling cover 31 is fixed on the base 1 and covers the graphite ring 21 for heating the optical device inside the insulating cavity 32. The insulating cavity 32 provides a heating place for the graphite heating part 2. An opening 34 communicating with the insulating cavity 32 is provided on the side wall of the water cooling cover 31. The opening 34 is used for the optical device to be processed to penetrate into the insulating cavity 32 and penetrate through the graphite ring 21 for heating the optical device. Taking the optical device to be processed as an optical fiber as an example, the opening 34 and the graphite ring 21 for heating the optical device are generally coaxially arranged, and openings 34 are provided at positions corresponding to both ends of the graphite ring 21 for heating the optical device in the insulating cavity 32. Both openings 34 are coaxially arranged with the graphite ring 21 for heating the optical device; the water cooling channel 33 is used to connect to a cooling medium source, mainly for cooling the outside of the insulating cavity 32 to prevent the heat outside the insulating cavity 32 from interfering with the heating of the graphite ring 21 for heating the optical device inside the cavity. The heat insulation part 4 includes a heat insulation layer 41 provided on the inner wall of the insulating cavity 32. A closed heat insulation cavity is formed inside the heat insulation layer 41. The graphite ring 21 for heating the optical device penetrates through the heat insulation layer 41 and is located inside the closed heat insulation cavity. The heat insulation layer 41 is used to prevent the heat in the closed heat insulation cavity from dissipating, which can improve the processing effect and processing efficiency.

[0077] The above-mentioned graphite heating device 100 for optical device processing processes optical devices based on a graphite heating heat source. By arranging a water-cooling part 3 and a heat-insulating part 4 around the graphite heating part 2, while ensuring the uniform temperature inside the heat-insulating cavity 32, the loss of high temperature to the outside can be isolated, thereby preventing damage to the outside, prolonging the service life of the graphite heating, and achieving continuous trouble-free operation for up to 12 hours at most. This not only makes efficient and full use of the graphite consumables, avoiding waste of consumables, but also the working range can heat and draw products with a maximum outer diameter of 3 mm, solving the problems of the short service life of the existing graphite heating heat source, with the longest continuous service life being only 300 minutes, the high price of consumables, and the maximum ability to heat and draw products with an outer diameter of only 1.5 mm.

[0078] In some feasible embodiments, such as Figure 6 and Figure 10 shown, a connector one 42 communicating with the inside of the closed heat-insulating cavity is provided on the water-cooling cover 31. The connector one 42 is used to externally connect to a constant-temperature inert gas source to introduce a constant-temperature inert gas into the closed heat-insulating cavity, which not only plays a role in insulating the graphite ring 21 for optical device heating, but also can extrude the oxygen in the closed heat-insulating cavity by introducing a constant-temperature inert gas into the closed heat-insulating cavity to realize the replacement of the oxygen in the closed heat-insulating cavity. This design can not only ensure the cleanliness of the gas inside the closed heat-insulating cavity, but also play an anti-oxidation protection role, reduce the oxidation rate of the graphite ring 21 for optical device heating at high temperature, increase its service life, and thus improve the processing effect and processing efficiency. The constant-temperature inert gas includes but is not limited to argon, etc.

[0079] In some feasible embodiments, the water-cooling cover 31 includes a cover body 311 and a cover plate 312. As Figure 15 shown, the heat-insulating cavity 32 is opened in the cover body 311, and the upper and lower ends of the heat-insulating cavity 32 respectively penetrate through the upper and lower ends of the cover body 311. The bottom end (lower end) of the cover body 311 is fixedly attached to the base 1, and the cover plate 312 is arranged at the top end (upper end) of the cover body 311 to close the heat-insulating cavity 32. The connector one 42 is arranged on the cover plate 312. The front and rear ends of the cover body 311 are closed, and openings 34 are respectively opened. As Figure 15 shown, generally, it is preferably to use an internal hexagonal socket head screw 6 to fix the cover body 311 to the base 1.

[0080] In some feasible embodiments, such as Figure 15 and Figure 16 shown, the heat-insulating layer 41 includes a heat-insulating end plate one 411, a heat-insulating end plate two 412, and a closed heat-insulating side plate 413. The closed heat-insulating side plate 413 is a columnar side plate with openings at both ends, such as a cylindrical or prismatic side plate. The heat-insulating end plate one 411 and the heat-insulating end plate two 412 are respectively used to block the axial ends of the closed heat-insulating side plate 413. Specifically, as Figure 10 and Figure 15As shown, the closed heat-insulating side plate 413 is vertically arranged in the heat-insulating cavity 32. The shape of the heat-insulating cavity 32 is adapted to the outer contour of the closed heat-insulating side plate 413. Generally, it is preferably arranged that the closed heat-insulating side plate 413 fits against the inner side wall of the heat-insulating cavity 32. Correspondingly, the shapes of the first heat-insulating end plate 411 and the second heat-insulating end plate 412 are both adapted to the cross-sectional shape of the closed heat-insulating side plate 413. For example, if the closed heat-insulating side plate 413 is cylindrical, then both the first heat-insulating end plate 411 and the second heat-insulating end plate 412 are circular end plates. If the heat-insulating side plate 413 is prismatic, then both the first heat-insulating end plate 411 and the second heat-insulating end plate 412 are corresponding polygonal end plates. The first heat-insulating end plate 411 is located at one end (i.e., the lower end) of the closed heat-insulating side plate 413 facing the base 1. The tops of the first clamping member 22 and the second clamping member 23 penetrate through the first heat-insulating end plate 411 and extend into the interior of the closed heat-insulating side plate 413. Sealing rings are generally arranged at the positions where the first clamping member 22 and the second clamping member 23 penetrate through the first heat-insulating end plate 411 to ensure the sealing inside the closed heat-insulating cavity. The second heat-insulating end plate 412 is located at one end (the upper end) of the closed heat-insulating side plate 413 facing the cover plate, and capillary holes 414 for the passage of the thermostatic inert gas are provided on the second heat-insulating end plate 412. The thermostatic inert gas introduced by the first connector 42 can enter the closed heat-insulating cavity through the capillary holes 414. It should be noted that corresponding through holes are also provided at the position of the heat-insulating layer 41 corresponding to the opening 34 for the optical device to pass through.

[0081] In some feasible embodiments, such as Figure 10 and Figure 15 As shown, the cover plate 312 is preferably a C-shaped cover plate with a recess in the middle of the bottom plate (the "C" shape here refers to the cross-sectional shape of the cover plate 312). The cover plate 312 can be directly welded to the cover body 311 or fixedly connected to the cover body 311 by screws. The edge of the cover plate 312 is hermetically attached to the top (upper end) of the cover body 311. Due to the recess in the middle of the cover plate 312, there is a gap between the cover plate 312 and the cover body 311, so a buffer air cavity 43 with a closed outer periphery is formed between the middle of the cover plate 312 and the second heat-insulating end plate 412 inside the cover body 311. The first connector 42 on the cover plate 312 and the capillary holes 414 on the second heat-insulating end plate 412 are both communicated with the buffer air cavity 43. The buffer air cavity 43 is mainly used to buffer the air flow introduced by the first connector 42. In order to improve the air flow buffering effect and homogenization effect, it is preferably that the first connector 42 is located at the center of the cover plate 312, and the position of the second heat-insulating end plate 412 opposite to the outlet of the first connector 42 is a closed area where no capillary holes 414 are provided, and a number of capillary holes 414 are evenly provided on the outer periphery of this closed area, such as Figure 15 and Figure 16As shown, the central region of the second heat-insulating end plate 412 is the aforementioned closed region. A number of capillary holes 414 are evenly opened on both sides of the closed region. Based on this, the air flow ejected from the outlet of the first joint 42 first directly impacts the central closed region of the second heat-insulating end plate 412, and after being buffered, it is sprayed into the heat-insulating layer 41 through the capillary holes 414 on both sides, ensuring that the air flow is evenly replaced with oxygen in the heat-insulating layer 41.

[0082] In some feasible implementation manners, such as Figure 13 As shown, the first clamping member 22 includes a first clamping seat 221, a first clamping block 222, and a second clamping block 223. One end of the first clamping seat 221 is fixedly connected to the first electrode terminal 24 through a clamping member fixing screw 26, and the other end of the first clamping seat 221 is fixedly connected to the base 1 through a clamping member fixing screw 26; the first clamping block 222 is disposed on the first clamping seat 221, and the first clamping block 222 can be integrally formed with the first clamping seat 221 or assembled and fixed to the first clamping seat 221 through screws; the second clamping block 223 is separately disposed from both the first clamping block 222 and the first clamping seat 221. The second clamping block 223 can be detachably connected to the first clamping block 222 through a clamping screw 27. The second clamping block 223 can cooperate with the first clamping block 222 to clamp the positive electrode pin 213 of the graphite ring. When the graphite ring needs to be disassembled, the clamping screw 27 is disassembled to separate the second clamping block 223 from the first clamping block 222, and then the graphite ring can be disassembled. The structure of the second clamping member 23 is the same as that of the first clamping member 22, and specifically includes a second clamping seat 231, a third clamping block 232, and a fourth clamping block 233. One end of the second clamping seat 231 is fixedly connected to the second electrode terminal 25 through a clamping member fixing screw 26, and the other end of the second clamping seat 231 is fixedly connected to the base 1 through a clamping member fixing screw 26; the third clamping block 232 is disposed on the second clamping seat 231, and the third clamping block 232 can be integrally formed with the second clamping seat 231 or assembled and fixed to the second clamping seat 231 through screws; the fourth clamping block 233 is separately disposed from both the third clamping block 232 and the second clamping seat 231. The fourth clamping block 233 can be detachably connected to the third clamping block 232 through a clamping screw 27. The fourth clamping block 233 can cooperate with the third clamping block 232 to clamp the negative electrode pin 214 of the graphite ring. When the graphite ring needs to be disassembled, the clamping screw 27 is disassembled to separate the fourth clamping block 233 from the third clamping block 232, and then the graphite ring can be disassembled. As Figure 15 As shown, it is preferred that the tops of the first clamping block 222, the second clamping block 223, the third clamping block 232, and the fourth clamping block 233 are all inserted into the closed heat-insulating cavity, and the clamping screws 27 of the first clamping member 22 and the second clamping member 23 are also located in the closed heat-insulating cavity. Based on this, the clamping screw 27 is preferably a high-temperature-resistant screw. The aforementioned clamping member fixing screw 26 is preferably a copper screw.

[0083] In some feasible embodiments, the graphite heating part 2 further includes a first cable 28 for externally connecting to the positive pole of the voltage and a second cable 29 for externally connecting to the negative pole of the voltage. The first cable 28 and the second cable 29 are respectively electrically connected to the first electrode terminal 24 and the second electrode terminal 25. Specifically: The first electrode terminal 24 is locked and conducted with the first cable 28 through a wiring adapter sleeve 2102 and a cable fixing screw 210, and the second electrode terminal 25 is locked and conducted with the second cable 29 through a wiring adapter sleeve 2102 and a cable fixing screw 210. Both the first cable 28 and the second cable 29 can be large-current silver-plated cables.

[0084] In some feasible embodiments, such as Figure 6 , Figure 13 and Figure 15 shown, the graphite heating device 100 for optical device processing further includes a cable fixing seat 5, which is fixed to one side of the water-cooling cover 31 by screws or bolts. The first cable 28 and the second cable 29 pass through the cable fixing seat 5, and the cable fixing seat 5 plays a role in stabilizing the cables.

[0085] In some feasible embodiments, such as Figure 14 shown, preferably, the water-cooling channel 33 is a C-shaped water-cooling channel, and the C-shaped water-cooling channel semi-surrounds the outer periphery of the heat-insulating cavity 32. Both ends of the C-shaped water-cooling channel penetrate the side wall of the water-cooling cover 31 where the cable fixing seat 5 is installed. A second joint 35 and a third joint 36 are respectively arranged at both ends of the C-shaped water-cooling channel. The second joint 35 and the third joint 36 are respectively connected with a cooling medium inlet pipe 37 and a cooling medium outlet pipe 38. Due to the processing process arrangement, a processing process hole communicating with the water-cooling channel 33 is generally reserved on the side wall of the water-cooling cover 31. After processing, the water-cooling channel 33 can be sealed by laser welding a plug 313 in this processing process hole. After welding, the whole needs to be subjected to hard insulation non-conductive natural color oxidation treatment. Both the second joint 35 and the third joint 36 are preferably quick-connect joints, and the quick-connect joints are finished products, which will not be elaborated here specifically; both the cooling medium inlet pipe 37 and the cooling medium outlet pipe 38 are preferably PU water-cooling pipes, and the cooling medium inlet pipe 37 and the cooling medium outlet pipe 38 can also pass through the cable fixing seat 5 and be supported by the cable fixing seat 5.

[0086] The following specifically describes the usage method and working principle of the graphite heating device 100 for optical device processing in this embodiment:

[0087] The graphite ring 21 for heating the optical device is fixed to the positive and negative pins respectively by the clamping member one 22 and the clamping member two 23 and is electrically connected. After the positive DC voltage passes through the cable one 28, the electrode terminal one 24, and the clamping member one 22 in sequence, it is connected to the positive pin 213 of the graphite ring 21 for heating the optical device through the clamping screw 27. After the negative DC voltage passes through the cable two 29, the electrode terminal two 25, and the clamping member two 23 in sequence, it is connected to the negative pin 214 of the graphite ring 21 for heating the optical device through the clamping screw 27, thereby forming a loop load in the graphite ring 21 for heating the optical device. The electrical properties and its structure of the graphite ring material are strictly calculated to generate a corresponding temperature field temperature under a specific DC voltage, so that the optical device can be heated by using this temperature field temperature.

[0088] The cooling medium inlet pipe 37 of the water-cooling cover 31 is connected to the water-cooling machine. When the water-cooling machine outputs a set constant-temperature high-pressure liquid, the liquid sequentially enters the water-cooling channel 33 through the cooling medium inlet pipe 37 and the joint two 35. After taking away the temperature, it returns to the water-cooling machine through the joint three 36 and the cooling medium outlet pipe 38 in sequence to achieve circulating cooling. The above-mentioned constant-temperature high-pressure liquid includes but is not limited to high-pressure water flow.

[0089] In addition to the heat preservation function, the heat preservation part 4 also plays a role in anti-oxidation protection. Specifically: The joint one 42 adopts a finished product quick-connect joint, and this joint one 42 is externally connected to an argon gas source. Considering that when argon gas is input into the closed heat preservation cavity, it cannot directly spray on the surface of the graphite ring 21 for heating the optical device first, otherwise the air flow will affect the heating temperature field of the graphite ring 21 for heating the optical device. Based on this, this solution sets up a buffer gas cavity 43 and capillary holes 414 to reduce the air flow impact force and homogenize the gas in the cavity. Specifically: The argon gas inlet is divided into a first stage of direct input and a second stage of homogenized diffusion. In the first stage, argon gas enters the buffer gas cavity 43 to reduce the impact force, and then enters the second stage. The argon gas with reduced impact force is evenly diffused into the closed heat preservation cavity through the capillary holes 414 without directly spraying on the graphite ring 21 for heating the optical device.

[0090] When the graphite ring 21 for heating the optical device is in the working state, it will generate an extremely high radiation temperature and quickly spread outwards. At the same time, the oxidation rate of the graphite ring 21 for heating the optical device is rapidly increased. At this time, the heat insulation layer 41 is used to wrap the graphite ring 21 for heating the optical device to prevent the high temperature of the graphite ring 21 for heating the optical device from spreading, and a closed heat preservation cavity is formed. At the same time, a certain number of capillary holes 414 are opened on the closed heat preservation cavity, and high-purity argon gas is injected into the heat preservation cavity through the capillary holes 414 to replace part of the oxygen in the closed heat preservation cavity. The replaced oxygen can be discharged through the opening 34 or the gap on the side of the water-cooling cover to extend the heating life of the graphite ring 21 for heating the optical device. The cooling medium is circulated in the water-cooling channel 33 to take away a part of the high temperature that is not completely isolated by the heat insulation layer 41. The optical device to be processed can be inserted through the opening 34 for heating.

[0091] In actual operation, the graphite ring 21 for heating the optical device can be selected as graphite ring D17. Coatings are provided on the surfaces of the graphite ring 21 for heating the optical device, the first clamping member 22, the second clamping member 23, and the water-cooling cover 31. The coating is processed with special materials and has remarkable physical performance effects for low resistance, high temperature resistance, high insulation strengthening, and stability under high-temperature and high-current conditions.

[0092] In summary, the graphite heating device 100 for processing optical devices in this solution is essentially a water-cooled and heat-insulated long-life graphite heating device. By setting a closed heat-insulating cavity and a water-cooling channel, it can quickly and accurately provide a stable heat source temperature field. While ensuring uniform temperature inside the cavity, it isolates the loss of high temperature to the outside, so that there is basically no temperature radiation effect outside, preventing thermal damage to the outside. Argon is filled inside the closed heat-insulating cavity to displace oxygen, which can reduce the oxidation rate of the graphite ring for heating the optical device and increase its service life, and it can work continuously without failure for up to 12 hours at most. Except for the metal parts that need to have the conductive function in the graphite heating device 100 for processing optical devices as a whole, the remaining metal parts are all coated with strengthened high-temperature insulation coatings to obtain overall stable mechanical strength, and the working range can heat and draw products with a maximum outer diameter of 3 mm for large fiber diameters.

[0093] The graphite heating device 100 for processing optical devices in this solution not only has a stable heat source temperature field, long service life, low consumption of consumables and low cost, but also each component is designed modularly. While being convenient for disassembly, installation, maintenance, it has a small structural volume and a wide range of applicable scenarios. It can overcome the problem of limitations in the operation space of existing equipment and can meet the processing requirements of modern optical devices under some special working conditions.

[0094] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present invention can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for convenience of description and are not used to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present invention can be implemented.

[0095] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A graphite ring for heating an optical device, characterized in that: It comprises two coaxial and spaced closed annular bodies, wherein the first ends of the two closed annular bodies are connected by a connecting arm, and the connecting arm is parallel to the axial arrangement of the two closed annular bodies; the second ends of the two closed annular bodies are respectively provided with a positive electrode pin and a negative electrode pin, the positive electrode pin and the negative electrode pin are both parallel to the axial arrangement of the closed annular bodies, and the positive electrode pin and the negative electrode pin are aligned, and the positive electrode pin and the negative electrode pin both extend in a direction away from the connecting arm.

2. The graphite ring for heating an optical device according to claim 1, characterized in that: The first end and the second end are respectively located on two axial intersection lines of the reference section and the side wall of the closed circular ring body, and the reference section passes through the central axes of the two closed circular ring bodies; the connecting arm, the positive electrode pin and the negative electrode pin are all symmetrical structures centered on the reference section; The connecting arm and the two closed annular bodies are integrally formed, and the outer wall surface of the connecting arm is a cylindrical surface, and the two sides of the connecting arm are smoothly transitioned and connected with the outer wall surface of the closed annular body through a circular arc transition surface 1; The positive electrode pin and the negative electrode pin are respectively integrally formed with the two closed circular ring bodies, and the two sides of the positive electrode pin are respectively smoothly transitioned to the outer wall surface of the corresponding closed circular ring body through the second arc transition surface, and the two sides of the negative electrode pin are respectively smoothly transitioned to the outer wall surface of the corresponding closed circular ring body through the second arc transition surface.

3. The graphite ring for heating an optical device according to claim 2, characterized in that: The inner diameter φ of the two closed annular bodies is 3.2mm to 4.9mm; the wall thickness D of the two closed annular bodies is 0.5mm to 0.7mm; the radius R1 of the connecting arm is 0.75mm to 1.10mm; the radius R2 of the arc transition surface 1 is 0.45mm to 0.6mm, and the minimum spacing d1 of the two arc transition surfaces 1 is 0.78mm to 0.95mm; the radius R3 of the arc transition surface 2 is 0.55mm to 0.65mm, and the minimum spacing d2 of the two arc transition surfaces 2 is 0.96mm to 1.02mm; the thickness t of the positive electrode pin and the negative electrode pin are both 1.4mm ~1.6mm; the vertical distance L1 between the center of the connecting arm and the central axis of the closed circular body is 3.9mm~4.5mm; the vertical distance L2 between the end face of the positive pin facing away from the connecting arm and the central axis of the closed circular body is 5.0mm~5.8mm; the spacing d3 between the two closed circular bodies is 0.48mm~0.55mm; the axial length d4 of the connecting arm is 3.8mm~5.5mm; the spacing d5 between the two ends of the positive pin and the negative pin away from each other is 6.8mm~7.5mm; the depth d6 of the spacing between the two closed circular bodies is 7.5mm~8.2mm.

4. The graphite ring for heating an optical device according to claim 2 or 3, characterized in that: The two axial ends of the connecting arm are aligned with the outer ends of the two closed circular ring bodies respectively; the positive electrode pin and the negative electrode pin are respectively extended to the outside of the outer ends of the two closed circular ring bodies.

5. A graphite heating device for optical device processing, characterized in that: It includes a base, a graphite heating part, a water cooling part and a heat preservation part, among which: The graphite heating part is arranged on the base, and the graphite heating part comprises a clamping member 1, a clamping member 2, an electrode terminal 1, an electrode terminal 2 and a graphite ring for heating an optical device according to any one of claims 1 to 4, the graphite ring for heating an optical device is used to penetrate the optical device to be processed, the positive electrode pin is fixed by the clamping member 1 and is electrically connected to the clamping member 1, the negative electrode pin is fixed by the clamping member 2 and is electrically connected to the clamping member 2, the clamping member 1 and the clamping member 2 are electrically connected to the electrode terminal 1 and the electrode terminal 2 respectively, the electrode terminal 1 and the electrode terminal 2 are respectively used for externally connecting a positive voltage and a negative voltage, so that a loop load is formed on the graphite ring for heating an optical device to heat the optical device to be processed; The water cooling part comprises a water cooling cover, a heat insulation cavity and a water cooling channel are provided in the water cooling cover, the water cooling channel is located at the periphery of the heat insulation cavity, the water cooling cover is fixed on the base, and the graphite ring cover for heating the optical device is buckled inside the heat insulation cavity, and an opening communicating with the heat insulation cavity is provided on the side wall of the water cooling cover, and the opening is used for the optical device to be processed to pass through the graphite ring for heating the optical device; the water cooling channel is used for connecting an external cooling medium source to cool the outside of the heat insulation cavity; The heat-insulating part comprises a heat-insulating layer arranged on the inner wall of the heat-insulating cavity, a closed heat-insulating cavity is formed in the heat-insulating layer, and the graphite ring for heating the optical device is located in the closed heat-insulating cavity.

6. The graphite heating device for optical device processing according to claim 5, characterized in that: The water-cooling cover includes a cover body and a cover plate, the heat-insulating cavity is opened in the cover body, and the two ends of the heat-insulating cavity respectively pass through the two ends of the cover body, the first end of the cover body is fitted and fixed to the base, and the cover plate is arranged at the second end of the cover body to close the heat-insulating cavity; a joint 1 connected to the inside of the closed heat-insulating cavity is arranged on the cover plate, and the joint 1 is used for connecting an external constant temperature inert gas source to introduce constant temperature inert gas into the closed heat-insulating cavity.

7. The graphite heating device for optical device processing according to claim 6, characterized in that: The thermal insulation layer comprises an insulation end plate 1, an insulation end plate 2 and a closed insulation side plate, the closed insulation side plate is arranged on the inner wall of the insulation cavity, the insulation end plate 1 is located at the end of the closed insulation side plate facing the base, the tops of the clamping piece 1 and the clamping piece 2 pass through the insulation end plate 1 and extend into the closed insulation side plate, the insulation end plate 2 is located at the end of the closed insulation side plate facing the cover plate, and the insulation end plate 2 is provided with capillary holes for the constant temperature inert gas to pass through; the cover plate is a C-shaped cover plate with a recessed middle portion, so that the middle portion of the cover plate is spaced from the insulation end plate 2 and a buffer air cavity is formed, and the joint 1 and the capillary holes are both connected to the buffer air cavity.

8. The graphite heating device for optical device processing according to any one of claims 5 to 7, characterized in that: The first clamping member comprises: A clamping seat 1, one end of which is fixedly connected to the electrode terminal 1 through a clamping member fixing screw, and the other end of which is connected to the base through the clamping member fixing screw; A clamping block 1, arranged on the clamping seat 1; A clamping block 2 is detachably connected to the clamping block 1 through a clamping screw, and the clamping block 2 can cooperate with the clamping block 1 to clamp the positive electrode pin; The second clamping member comprises: A second clamping seat, one end of which is fixedly connected to the second electrode terminal through the clamping member fixing screw, and the other end of which is connected to the base through the clamping member fixing screw; the second clamping seat and the first clamping seat are arranged side by side with an interval; A clamping block three is arranged on the clamping seat two; The clamping block four is detachably connected to the clamping block three via the clamping screw, and the clamping block four can cooperate with the clamping block three to clamp the negative electrode pin.

9. The graphite heating device for optical device processing according to any one of claims 5 to 7, characterized in that: It also includes a cable fixing seat, which is fixed to one side of the water cooling cover; the graphite heating part also includes cable 1 for the positive pole of the external voltage and cable 2 for the negative pole of the external voltage, the cable 1 and the cable 2 are electrically connected to the electrode terminal 1 and the electrode terminal 2 respectively, and the cable 1 and the cable 2 pass through the cable fixing seat.

10. The graphite heating device for optical device processing according to any one of claims 5 to 7, characterized in that: The water cooling channel is a C-shaped water cooling channel, and both ends of the C-shaped water cooling channel penetrate the side wall of the water cooling cover, and the two ends of the C-shaped water cooling channel are respectively provided with a second joint and a third joint.

Images