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

Abstract

The application discloses a graphite ring for heating optical devices and a graphite heating device for processing optical devices, and relates to the field of graphite heating in the optical device manufacturing industry. The graphite ring for heating optical devices comprises two coaxial and spaced closed ring bodies, the first ends of the two closed ring bodies are connected through a connecting arm, the connecting arm is arranged parallel to the axial direction of the two closed ring bodies, and the second ends of the two closed ring bodies are respectively provided with a positive electrode pin and a negative electrode pin. The graphite heating device for processing optical devices comprises a base, a graphite heating part, a water cooling part and a heat preservation part, and the graphite heating part comprises the above graphite ring for heating optical devices. The graphite heating device is used for processing optical devices based on a graphite heating source, the water cooling part and the heat preservation part are arranged around the graphite heating part, a stable heat source temperature field can be quickly and accurately provided, external temperature radiation has little influence, the service life of the graphite heating device can be prolonged, material waste can be avoided, and the working range can heat and draw products with a maximum outer diameter of 3 mm.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of photoelectric communication, relates to a graphite heating technology in the optical device manufacturing industry, and in particular to a graphite ring for optical device heating and a graphite heating device for optical device processing comprising the graphite ring. BACKGROUND

[0002] In the core process of the optical device manufacturing industry, the heat source is mainly traditional hydrogen-oxygen flame and graphite heating, the traditional hydrogen-oxygen flame heat source has unstable temperature field fluctuation, which leads to low optical device processing precision and production efficiency, high cost of gas source consumables, and large overall size of the equipment, so the graphite heating heat source is more and more favored.

[0003] At present, the mainstream graphite heating technology at home and abroad is graphite filament heating technology, which adopts an "Ω"-shaped graphite ring with an opening. Figure 1 As shown, when in use, the opening of the "Ω"-shaped graphite ring faces upward, the opening of the "Ω"-shaped graphite ring is clamped from both sides by electrodes, left-right scanning is performed, and the molten optical fiber in the ring is heated; however, when the "Ω"-shaped graphite ring is vertically heated, the opening part will cause uneven temperature field, and it is difficult to process. Moreover, the "Ω"-shaped graphite ring is a small-diameter graphite heat source, has a short service life, the longest continuous service life is only 200 minutes on average, the consumable is expensive, and the maximum can only heat and draw a 1.5mm outer diameter product, which is difficult to meet the modern optical device processing demand in some special working conditions.

[0004] Based on the above problems, the application provides a new type of graphite ring for optical device heating and a graphite heating device for optical device processing comprising the graphite ring to meet the modern optical device processing demand. SUMMARY

[0005] The purpose of the application is to provide a new type of graphite ring for optical device heating and a graphite heating device for optical device processing comprising the graphite ring, the graphite ring for optical device heating adopts a closed ring structure, can quickly and accurately provide a stable heat source temperature field on the basis of meeting the vertical heating scene, ensures the uniformity of the heat source temperature field, reduces the device processing difficulty, prolongs the continuous service life, and solves the problems existing in the prior art.

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

[0007] In one aspect, the application provides a graphite ring for heating optical devices, comprising two coaxially and spaced closed ring bodies, a first end of the two closed ring bodies being connected by a connecting arm, and the connecting arm being arranged parallel to the axial direction of the two closed ring bodies; a positive electrode pin and a negative electrode pin are respectively arranged at a second end of the two closed ring bodies, the positive electrode pin and the negative electrode pin are both arranged parallel to the axial direction of the closed ring 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 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 a reference section and a side wall of the closed ring body, and the reference section passes through the central axis of the two closed 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 ring 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 respectively smoothly connected to the outer wall surface of the closed ring body through a circular arc transition surface one; the positive electrode pin and the negative electrode pin are respectively integrally formed with the two closed ring bodies, and the two sides of the positive electrode pin are respectively smoothly connected to the outer wall surface of the corresponding closed ring body through a circular arc transition surface two, and the two sides of the negative electrode pin are respectively smoothly connected to the outer wall surface of the corresponding closed ring body through the circular arc transition surface two.

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

[0010] In some embodiments, the axial ends of the connecting arms are respectively aligned with the outer ends of the two closed circular ring bodies; and the positive electrode pin and the negative electrode pin respectively extend outside the outer ends of the two closed circular ring bodies.

[0011] In another aspect, the present application provides a graphite heating device for processing optical devices, comprising 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 comprises a clamping piece one, a clamping piece two, an electrode terminal one, an electrode terminal two and an optical device heating graphite ring. The optical device heating graphite ring is used for passing through the optical device to be processed. The positive electrode pin is fixed by the clamping piece one and is electrically connected with the clamping piece one. The negative electrode pin is fixed by the clamping piece two and is electrically connected with the clamping piece two. The clamping piece one and the clamping piece two are respectively electrically connected with 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 electrode and the negative electrode of the voltage, so that a loop load is formed on the optical device heating graphite ring, and the optical device to be processed is heated.

[0013] The water cooling part comprises a water cooling cover. The water cooling cover is internally provided with a heat insulation cavity and a water cooling channel. The water cooling channel is located at the outer periphery of the heat insulation cavity. The water cooling cover is fixed on the base and buckles the optical device heating graphite ring inside the heat insulation cavity. The side wall of the water cooling cover is provided with an opening which is in communication with the heat insulation cavity and is used for passing the optical device to be processed into the optical device heating graphite ring. The water cooling channel is used for externally connecting a cooling medium source and is used for cooling the outside of the heat insulation cavity.

[0014] The heat preservation part comprises a heat preservation insulation layer arranged on the inner wall of the heat insulation cavity. The heat preservation insulation layer forms a closed heat preservation cavity. The optical device heating graphite ring is located in the closed heat preservation cavity.

[0015] In some embodiments, the water cooling cover is provided with a connector one which is in communication with the inside of the closed heat preservation cavity. The connector one is used for externally connecting a constant temperature inert gas source to introduce constant temperature inert gas into the closed heat preservation cavity.

[0016] In some embodiments, the water cooling cover comprises a cover body and a cover plate. The heat insulation cavity is arranged in the cover body, and the two ends of the heat insulation cavity respectively pass through the two ends of the cover body. The first end of the cover body is fixedly attached to the base. The cover plate is arranged on the second end of the cover body to close the heat insulation cavity. The connector one is arranged on the cover plate.

[0017] In some embodiments, the heat insulation layer comprises a heat insulation end plate one, a heat insulation end plate two and a closed heat insulation side plate, the closed heat insulation side plate is arranged on the inner side wall of the heat insulation cavity, the heat insulation end plate one is arranged at one end of the closed heat insulation side plate facing the base, the top of the clamping part one and the clamping part two penetrates the heat insulation end plate one and extends into the closed heat insulation side plate, the heat insulation end plate two is arranged at one end of the closed heat insulation side plate facing the cover plate, and the heat insulation end plate two is provided with capillary holes for the constant temperature inert gas to pass through.

[0018] In some embodiments, the cover plate is a C-shaped cover plate with a concave middle part, so that the middle part of the cover plate is spaced from the heat insulation end plate two and a buffer gas cavity is formed, and the joint one and the capillary hole are both in communication with the buffer gas cavity.

[0019] In some embodiments, the clamping part one comprises:

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

[0021] a clamping block one arranged on the clamping seat one;

[0022] a clamping block two, which is detachably connected with the clamping block one through a clamping screw, and the clamping block two can clamp the positive electrode lead together with the clamping block one;

[0023] the clamping part two comprises:

[0024] a clamping seat two, one end of which is fixedly connected with the electrode terminal two through the clamping part fixing screw, and the other end is connected with the base through the clamping part fixing screw; the clamping seat two is arranged in parallel with the clamping seat one;

[0025] a clamping block three arranged on the clamping seat two;

[0026] a clamping block four, which is detachably connected with the clamping block three through the clamping screw, and the clamping block four can clamp the negative electrode lead together with the clamping block three.

[0027] In some embodiments, the graphite heating part further comprises a cable one for connecting a positive voltage and a cable two for connecting a negative voltage, and the cable one and the cable two are electrically connected with the electrode terminal one and the electrode terminal two respectively.

[0028] In some embodiments, the graphite heating device for processing optical devices further comprises a cable fixing seat fixed to one side of the water-cooled cover, and the cable one and the cable two penetrate 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 the side wall of the water cooling cover, and the two ends of the C-shaped water cooling channel are respectively provided with joint two and joint three.

[0030] In some embodiments, the joint two and the joint three are respectively connected with a cooling medium inlet pipe and a cooling medium outlet pipe.

[0031] The present application has the following technical effects relative to the prior art:

[0032] The graphite ring for heating optical devices provided by the present application has a simple structure, a small size, and is easy to process. The closed ring structure can quickly and accurately provide a stable heat source temperature field to ensure uniform heat source temperature field, reduce the difficulty of device processing, prolong the service life, and can work continuously for up to 12 hours without failure. This not only makes efficient and full use of graphite consumables, avoids waste of consumables, but also can heat and draw products with a maximum outer diameter of 3mm, solves the problems of short service life of existing graphite heating sources, the longest continuous use life of only 200 minutes, high cost of consumables, and the maximum outer diameter of products that can be heated and drawn of only 1.5mm.

[0033] The graphite heating device for processing optical devices provided by the present application can quickly and accurately provide a stable heat source temperature field to ensure uniform temperature inside the cavity, isolate high temperature loss to the outside, prevent external thermal damage, prolong the service life of graphite heating, and can work continuously for up to 12 hours without failure. This not only makes efficient and full use of graphite consumables, avoids waste of consumables, but also can heat and draw products with a maximum outer diameter of 3mm, solves the problems of short service life of existing graphite heating sources, the longest continuous use life of only 200 minutes, high cost of consumables, and the maximum outer diameter of products that can be heated and drawn of only 1.5mm.

[0034] The graphite heating device for processing optical devices provided by the present application has a stable heat source temperature field, a long service life, low consumable consumption, and low cost. The components are modularly designed, easy to disassemble, maintain, and have a small structure size, which is suitable for a wide range of applications and can overcome the limitations of existing equipment in operation space, and can meet the needs of modern optical device processing in some special working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

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

[0038] Figure 3 for Figure 2 Side view of the graphite ring used for heating the optical device;

[0039] Figure 4 for Figure 2 Front view of the graphite ring used for heating the optical device;

[0040] Figure 5 for Figure 2 Schematic diagram of parameter marking of graphite ring used for heating of optical devices;

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

[0042] Figure 7 for Figure 6 Bottom view of

[0043] Figure 8 for Figure 6 Side view of;

[0044] Figure 9 for Figure 6 A top view of

[0045] Figure 10 for Figure 7 AA cross-sectional structural diagram;

[0046] Figure 11 for Figure 10 Schematic diagram of CC cross-section structure;

[0047] Figure 12 for Figure 10 Schematic diagram of the II cross-sectional structure;

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

[0049] Figure 14A top view structure of the water cooling part disclosed in the embodiment of the present application is shown in an enlarged schematic view;

[0050] Figure 15 A cross-sectional structure of the heat preservation part disclosed in the embodiment of the present application is shown in an enlarged schematic view;

[0051] Figure 16 A structure and installation of the heat preservation layer disclosed in the embodiment of the present application are shown in a schematic view;

[0052] Figure 17 A partial structure of the graphite heating part disclosed in the embodiment of the present application is shown in a schematic view.

[0053] In the figure, the reference signs are:

[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 body; 212, connecting arm; 213, positive electrode pin; 214, negative electrode pin; 215, reference section; 216, circular arc transition surface one; 217, circular arc transition surface two; 22, clamping part one; 221, clamping seat one; 222, clamping block one; 223, clamping block two; 23, clamping part two; 231, clamping seat two; 232, clamping block three; 233, clamping block four; 24, electrode terminal one; 25, electrode terminal two; 26, clamping part 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 preservation part; 41, heat preservation and insulation layer; 411, heat insulation end plate one; 412, heat insulation end plate two; 413, closed heat insulation side plate; 414, capillary hole; 42, joint one; 43, buffer gas cavity;

[0059] 5, cable fixing seat;

[0060] 6, internal hexagonal cylindrical head screw. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0062] One of the objectives of the present application is to provide a new type of graphite ring for optical device heating, which adopts a closed ring structure, can quickly and accurately provide a stable heat source temperature field on the basis of meeting the vertical heating scene, ensures the uniformity of the heat source temperature field, reduces the difficulty of device processing, and prolongs the service life, so as to solve the problems existing in the prior art.

[0063] Another objective of the present application is to provide a graphite heating device for optical device processing comprising the above-mentioned graphite ring for optical device heating, which can prolong the heating life of the graphite ring by configuring a water cooling part and a heat preservation part in the graphite heating part.

[0064] In order to make the above-mentioned objectives, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0065] Embodiment 1

[0066] In order to break through the tapering of products with an outer diameter greater than 1.5 mm, overcome the problems of gravity and uneven temperature field of the "Ω" shaped graphite ring 200, the present embodiment proposes a graphite ring 21 for optical device heating, as shown in Figure 2 The graphite ring 21 for optical device heating comprises two coaxial and spaced closed ring bodies 211, the outer diameter, inner diameter and wall thickness of the two closed ring bodies 211 are the same, that is, the structures of the two closed ring bodies 211 are completely consistent; 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 arranged parallel to the axial direction of the closed ring body 211, the positive electrode pin 213 and the negative electrode pin 214 are completely the same in structure, and the positive electrode pin 213 and the negative electrode pin 214 are arranged in alignment as shown in Figures 2-4 The positive electrode pin 213 and the negative electrode pin 214 both extend towards the direction away from the connecting arm 212, so as to protrude the closed ring body 211, and facilitate clamping by a clamp.

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

[0068] Further, the connecting arm 212, the positive electrode pin 213 and the negative electrode pin 214 are all symmetrical structures with the reference section 215 as the center. Based on this, the entire graphite ring 21 for heating optical devices is a symmetrical structure with the reference section 215 as the center.

[0069] Further, the connecting arm 212 and the two closed circular ring bodies 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 connected to the outer wall surface of the closed circular ring body 211 through the circular arc transition surface one 216, and the two circular arc transition surface one 216 are symmetrical with the reference section 215 as the center. The positive electrode pin 213 and the negative electrode pin 214 are respectively integrally formed with the two closed circular ring bodies 211, and the two sides of the positive electrode pin 213 are respectively connected to the outer wall surface of the corresponding closed circular ring body 211 through the circular arc transition surface two 217. The two sides of the negative electrode pin 214 are respectively connected to the outer wall surface of the corresponding closed circular ring body 211 through the circular arc transition surface two 217. The circular arc transition surface two 217 on the two sides of the negative electrode pin 214 and the circular arc transition surface two 217 on the two sides of the positive electrode pin 213 are all symmetrical with the reference section 215 as the center.

[0070] In some embodiments, as shown in Figure 2 and Figure 3 Preferably, the axial ends of the connecting arm 212 are respectively aligned with the outer ends of the two closed circular ring bodies 211.

[0071] In some embodiments, the mutually distant ends of the positive electrode pin 213 and the negative electrode pin 214 are respectively arranged to extend outwardly from the outer ends of the two closed circular ring bodies 211, that is, as shown in Figure 2 and Figure 3 As shown, the end of the positive electrode pin 213 away from the negative electrode pin 214 is longer than the outer end of the corresponding closed circular ring body 211. Correspondingly, the end of the negative electrode pin 214 away from the positive electrode pin 213 is longer than the outer end of the corresponding closed circular ring body 211.

[0072] Further, as shown in Figures 2-5As shown, the inner diameter φ of the two closed circular ring bodies 211 in the graphite ring 21 for heating the optical device can be 3.2 mm to 4.9 mm; the wall thickness D of the two closed circular ring bodies 211 can 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 arc transition surface one 216 can be 0.45 mm to 0.6 mm, and the minimum distance d1 between the two arc transition surfaces one 216 (i.e. the length of the connecting line segment between the outermost convex portions of the two arc transition surfaces one 216) can be 0.78 mm to 0.95 mm; the radius R3 of the arc transition surface two 217 can be 0.55 mm to 0.65 mm, and the minimum distance d2 between the two arc transition surfaces two 217 (i.e. the length of the connecting line segment between the outermost convex portions of the two arc transition surfaces two 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 be 1.4 mm to 1.6 mm; the vertical distance L1 of the center of the connecting arm 212 from the central axis of the closed circular ring body 211 can be 3.9 mm to 4.5 mm; the vertical distance L2 of the end surface of the positive electrode pin 213 (or the negative electrode pin 214) away from the connecting arm 212 from the central axis of the closed circular ring body 211 can be 5.0 mm to 5.8 mm; the distance d3 between the two closed circular 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 two ends of the positive electrode pin 213 and the negative electrode pin 214 away from each other can be 6.8 mm to 7.5 mm; and the depth d6 of the distance between the two closed circular ring bodies 211 can be 7.5 mm to 8.2 mm.

[0073] As a preferred solution, the inner diameter φ of the closed circular ring body 211 is generally preferably two specifications of 3.60 mm and 4.50 mm. When the inner diameter φ of the closed circular ring body 211 is 3.60 mm, the wall thickness D of the two closed circular ring bodies 211 is preferably 0.60 mm, the radius R1 of the connecting arm 212 is preferably 1.03 mm, the radius R2 of the circular arc transition surface one 216 is preferably 0.5 mm, the minimum distance d1 between the two circular arc transition surfaces one 216 is preferably 0.80 mm, the radius R3 of the circular arc transition surface two 217 is preferably 0.60 mm, the minimum distance d2 between the two circular arc transition surfaces two 217 is preferably 0.99 mm, the thickness t of the positive electrode lead 213 and the negative electrode lead 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 circular ring body 211 is preferably 4.0 mm, the vertical distance L2 from the end surface of the positive electrode lead 213 (or the negative electrode lead 214) away from the connecting arm 212 to the central axis of the closed circular ring body 211 is preferably 5.5 mm; the distance d3 between the two closed circular ring bodies 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 two ends of the positive electrode lead 213 and the negative electrode lead 214 away from each other is preferably 7.0 mm; and the depth d6 of the distance between the two closed circular ring bodies 211 is preferably 8.0 mm. When the inner diameter φ of the closed circular ring body 211 is 4.50 mm, the wall thickness D of the two closed circular ring bodies 211 is preferably 0.60 mm, the radius R1 of the connecting arm 212 is preferably 0.80 mm, the radius R2 of the circular arc transition surface one 216 is preferably 0.47 mm, the minimum distance d1 between the two circular arc transition surfaces one 216 is preferably 0.95 mm, the radius R3 of the circular arc transition surface two 217 is preferably 0.60 mm, the minimum distance d2 between the two circular arc transition surfaces two 217 is preferably 0.99 mm, the thickness t of the positive electrode lead 213 and the negative electrode lead 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 circular ring body 211 is preferably 4.0 mm, the vertical distance L2 from the end surface of the positive electrode lead 213 (or the negative electrode lead 214) away from the connecting arm 212 to the central axis of the closed circular ring body 211 is preferably 5.5 mm; the distance d3 between the two closed circular ring bodies 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 two ends of the positive electrode lead 213 and the negative electrode lead 214 away from each other is preferably 7.0 mm; and the depth d6 of the distance between the two closed circular ring bodies 211 is preferably 8.0 mm.

[0074] The graphite ring 21 for heating the optical device has simple structure, small size and is easy to process. The graphite ring 21 adopts a closed ring structure, can quickly and accurately provide a stable heat source temperature field on the basis of meeting the vertical heating scene, ensures the uniformity of the heat source temperature field, reduces the processing difficulty of the device, and prolongs the service life. In practical application, the structure of the graphite ring 21 for heating the optical device can be optimized according to the material characteristics, reference to Maxwell calculation resistance, and simulation by Ansys.

[0075] Example 2

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

[0077] The graphite heating device 100 for processing optical devices can process optical devices based on a graphite heating heat source, can ensure uniform temperature inside the heat insulation cavity 32 while isolating high temperature from the outside, thereby preventing damage from the outside and prolonging the service life of the graphite heating device, which can reach 12 hours of continuous failure-free operation. This not only makes efficient and full use of graphite consumables and avoids waste of consumables, but also enables the device to heat and draw products with a maximum outer diameter of 3 mm, thereby solving the problems of short service life of existing graphite heating heat sources, high cost of consumables, and the maximum outer diameter of products that can be heated and drawn being only 1.5 mm.

[0078] In some possible implementations, as shown in Figure 6 and Figure 10 , the water-cooled cover 31 is provided with a joint one 42 in communication with the inside of the closed heat insulation cavity, and the joint one 42 is used to externally connect a constant-temperature inert gas source to introduce constant-temperature inert gas into the closed heat insulation cavity, thereby playing a role in heat preservation of the graphite ring 21 for heating optical devices and also playing a role in replacing oxygen in the closed heat insulation cavity by introducing constant-temperature inert gas into the closed heat insulation cavity. This design can not only ensure the cleanliness of the gas in the closed heat insulation cavity, but also play a role in oxidation protection, reduce the oxidation speed of the graphite ring 21 for heating optical devices in a high-temperature state, increase the service life of the graphite ring 21 for heating optical devices, and further improve the processing effect and processing efficiency. The constant-temperature inert gas includes but is not limited to argon and the like.

[0079] In some possible implementations, the water-cooled cover 31 includes a cover body 311 and a cover plate 312, as shown in Figure 15 , the heat insulation cavity 32 is arranged in the cover body 311, and the upper and lower ends of the heat insulation cavity 32 respectively penetrate 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, the cover plate 312 is arranged at the top end (upper end) of the cover body 311 to close the heat insulation cavity 32, and the joint one 42 is arranged on the cover plate 312. The front and rear ends of the cover body 311 are closed and are each provided with an opening 34, as shown in Figure 15 , and the cover body 311 is generally preferably fixed to the base 1 by using an internal hexagonal cylindrical head screw 6.

[0080] In some possible implementations, as shown in Figure 15 and Figure 16 , the heat insulation and heat preservation layer 41 includes a heat insulation end plate one 411, a heat insulation end plate two 412, and a closed heat insulation side plate 413, the closed heat insulation side plate 413 is a columnar side plate with open ends, such as a cylindrical or prismatic side plate, and the heat insulation end plate one 411 and the heat insulation end plate two 412 are respectively used to block the axial two ends of the closed heat insulation side plate 413. Specifically, as shown in Figure 10 and Figure 15 , the heat insulation and heat preservation layer 41 is arranged in the graphite ring 21 for heating optical devices, and the closed heat insulation side plate 413 is arranged in the graphite ring 21 for heating optical devices.As shown, the closed heat insulation side plate 413 is vertically arranged in the heat insulation cavity 32, the shape of the heat insulation cavity 32 is adapted to the outer contour of the closed heat insulation side plate 413, and it is generally preferred that the closed heat insulation side plate 413 is arranged in close contact with the inner side wall of the heat insulation cavity 32. Correspondingly, the shapes of the heat insulation end plate one 411 and the heat insulation end plate two 412 are both adapted to the cross-sectional shape of the closed heat insulation side plate 413. For example, if the closed heat insulation side plate 413 is cylindrical, the heat insulation end plate one 411 and the heat insulation end plate two 412 are both circular end plates. If the closed heat insulation side plate 413 is prismatic, the heat insulation end plate one 411 and the heat insulation end plate two 412 are both corresponding polygonal end plates. The heat insulation end plate one 411 is located at one end (i.e. the lower end) of the closed heat insulation side plate 413 facing the base 1, and the top portions of the clamping member one 22 and the clamping member two 23 penetrate through the heat insulation end plate one 411 and extend into the interior of the closed heat insulation side plate 413. The position where the clamping member one 22 and the clamping member two 23 penetrate through the heat insulation end plate one 411 is generally provided with a sealing ring to ensure the sealing of the interior of the closed heat insulation cavity. The heat insulation end plate two 412 is located at one end (the upper end) of the closed heat insulation side plate 413 facing the cover plate, and the heat insulation end plate two 412 is provided with capillary holes 414 for the passage of the constant-temperature inert gas. The constant-temperature inert gas introduced by the joint one 42 can enter the closed heat insulation cavity through the capillary holes 414. It should be noted that the position of the heat insulation layer 41 corresponding to the opening 34 is also provided with a corresponding through hole for the passage of the light device.

[0081] As shown in some feasible embodiments, Figure 10 and Figure 15 The cover plate 312 is preferably a C-shaped cover plate (here, the "C" shape refers to the cross-sectional shape of the cover plate 312) with a recessed middle portion, and the cover plate 312 can be directly welded with the cover body 311 or fixedly connected with the cover body 311 through screws. The edge of the cover plate 312 is in sealing contact with the top end (the upper end) of the cover body 311, and the middle portion of the cover plate 312 is recessed and spaced from the cover body 311, thereby forming a buffer gas cavity 43 with a closed periphery between the middle portion of the cover plate 312 and the heat insulation end plate two 412 in the cover body 311. The joint one 42 on the cover plate 312 and the capillary holes 414 on the heat insulation end plate two 412 are both in communication with the buffer gas cavity 43. The buffer gas cavity 43 is mainly used for buffering the gas flow introduced by the joint one 42. In order to improve the gas flow buffering effect and homogenization effect, it is preferred that the joint one 42 is located at the center of the cover plate 312, and the position of the heat insulation end plate two 412 opposite to the outlet of the joint one 42 is a closed area which is not provided with capillary holes 414. A plurality of capillary holes 414 are uniformly arranged on the outer periphery of the closed area. Figure 15 and Figure 16As shown, the central region of the heat insulation end plate two 412 is the aforementioned closed region, and a plurality of capillary holes 414 are uniformly arranged on both sides of the closed region. Based on this, the gas flow sprayed from the outlet of the joint one 42 is first sprayed directly on the central closed region of the heat insulation end plate two 412, and then sprayed into the heat insulation layer 41 through the capillary holes 414 on both sides after buffering, so as to ensure that the gas flow is uniformly replaced with oxygen in the heat insulation layer 41.

[0082] In some feasible embodiments, as shown in Figure 13 As shown, the clamping piece one 22 includes a clamping seat one 221, a clamping block one 222, and a clamping block two 223. One end of the clamping seat one 221 is fixedly connected with the electrode terminal one 24 through the clamping piece fixing screw 26, and the other end of the clamping seat one 221 is connected with the base 1 through the clamping piece fixing screw 26. The clamping block one 222 is arranged on the clamping seat one 221, and the clamping block one 222 can be integrally formed with the clamping seat one 221 or assembled and fixed with the clamping seat one 221 through a screw. The clamping block two 223 is separately arranged with the clamping block one 222 and the clamping seat one 221. The clamping block two 223 can be detachably connected with the clamping block one 222 through the clamping screw 27, and the clamping block two 223 can clamp the positive lead 213 of the graphite ring in cooperation with the clamping block one 222. When the graphite ring needs to be disassembled, the clamping screw 27 is disassembled, so that the clamping block two 223 is separated from the clamping block one 222, and the graphite ring can be disassembled. The clamping piece two 23 has the same structure as the clamping piece one 22, and specifically includes a clamping seat two 231, a clamping block three 232, and a clamping block four 233. One end of the clamping seat two 231 is fixedly connected with the electrode terminal two 25 through the clamping piece fixing screw 26, and the other end of the clamping seat two 231 is connected with the base 1 through the clamping piece fixing screw 26. The clamping block three 232 is arranged on the clamping seat two 231, and the clamping block three 232 can be integrally formed with the clamping seat two 231 or assembled and fixed with the clamping seat two 231 through a screw. The clamping block four 233 is separately arranged with the clamping block three 232 and the clamping seat two 231. The clamping block four 233 can be detachably connected with the clamping block three 232 through the clamping screw 27, and the clamping block four 233 can clamp the negative lead 214 of the graphite ring in cooperation with the clamping block three 232. When the graphite ring needs to be disassembled, the clamping screw 27 is disassembled, so that the clamping block four 233 is separated from the clamping block three 232, and the graphite ring can be disassembled. Figure 15 As shown, the top ends of the clamping block one 222, the clamping block two 223, the clamping block three 232, and the clamping block four 233 are preferably inserted into the closed heat preservation cavity, and the clamping screws 27 of the clamping piece one 22 and the clamping piece two 23 are also located in the closed heat preservation cavity. Based on this, the clamping screw 27 is preferably a high-temperature-resistant screw. The above-mentioned clamping piece fixing screw 26 is preferably a red copper screw.

[0083] In some possible implementation manners, the graphite heating part 2 further comprises a cable one 28 for external connection of a positive voltage and a cable two 29 for external connection of a negative voltage, and the cable one 28 and the cable two 29 are electrically connected with the electrode terminal one 24 and the electrode terminal two 25 respectively. Specifically, the electrode terminal one 24 is locked and conducted with the cable one 28 through the wire adapter sleeve 2102 and the cable fixing screw 210, and the electrode terminal two 25 is locked and conducted with the cable two 29 through the wire adapter sleeve 2102 and the cable fixing screw 210. The cable one 28 and the cable two 29 can both be large-current silver-plated cables.

[0084] In some possible implementation manners, as shown in Figure 6 、 Figure 13 and Figure 15 , the graphite heating device for optical device processing 100 further comprises a cable fixing seat 5 which is fixed to one side of the water-cooled cover 31 through screws or bolts, and the cable one 28 and the cable two 29 pass through the cable fixing seat 5, and the cable fixing seat 5 plays a role of stabilizing the cables.

[0085] In some possible implementation manners, as shown in Figure 14 , the water-cooled channel 33 is preferably a C-shaped water-cooled channel, and the C-shaped water-cooled channel is semi-enclosed outside the heat insulation cavity 32, both ends of the C-shaped water-cooled channel pass through the side wall of the cable fixing seat 5 of the water-cooled cover 31, and both ends of the C-shaped water-cooled channel are respectively provided with a connector two 35 and a connector three 36, and the connector two 35 and the connector three 36 are respectively connected with a cooling medium inlet pipe 37 and a cooling medium outlet pipe 38. Due to the arrangement of the processing technology, the side wall of the water-cooled cover 31 generally also has a processing technology hole which is in communication with the water-cooled channel 33, and after the processing is completed, the processing technology hole can be sealed by a laser welding process plug 313 to seal the water-cooled channel 33, and after the welding is completed, the whole needs to be treated with hard insulation and non-conductive natural oxidation. The connector two 35 and the connector three 36 are preferably quick connectors, and the quick connectors are finished products, which will not be described in detail here; the cooling medium inlet pipe 37 and the cooling medium outlet pipe 38 are preferably PU water-cooled 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 use method and working principle of the graphite heating device 100 for optical device processing in the embodiment will be described in detail as follows:

[0087] The graphite ring 21 for heating optical device is fixed by the holder one 22 and the holder two 23 respectively to the positive and negative pins and is conducted, the positive direct current voltage passes through the cable one 28, the electrode terminal one 24 and the holder one 22 in turn, and then is connected to the positive pin 213 of the graphite ring 21 for heating optical device through the holding screw 27, the negative direct current voltage passes through the cable two 29, the electrode terminal two 25 and the holder two 23 in turn, and then is connected to the negative pin 214 of the graphite ring 21 for heating optical device through the holding screw 27, so that a loop load is formed in the graphite ring 21 for heating optical device, and the electrical performance of the graphite ring material and its structure are strictly calculated, so that a corresponding temperature field temperature is generated under a specific direct current voltage, so that the temperature field temperature can be used to heat the optical device.

[0088] The cooling medium inlet pipe 37 of the water cooling cover 31 is connected to a water cooling machine, when the water cooling machine outputs a set constant temperature high pressure liquid, the liquid enters the water cooling channel 33 through the cooling medium inlet pipe 37 and the joint two 35 in turn, and then returns to the water cooling machine through the joint three 36 and the cooling medium outlet pipe 38 after taking away the temperature, so that the circulation cooling is realized. The above constant temperature high pressure liquid includes but is not limited to high pressure water flow.

[0089] The heat preservation part 4 not only has a heat preservation function, but also has an anti-oxidation protection function. Specifically, the joint one 42 adopts a finished product quick joint, the joint one 42 is connected to an argon source, and considering that the argon cannot be directly sprayed on the surface of the graphite ring 21 for heating optical device when the argon is input into the closed heat preservation cavity, otherwise the airflow will affect the heating temperature field of the graphite ring 21 for heating optical device, based on this, the buffer gas cavity 43 and the capillary hole 414 are arranged to reduce the airflow impact force and homogenize the cavity gas, specifically, the argon gas input is divided into a first stage direct input and a second stage homogenization and scattering, the first stage argon enters the buffer gas cavity 43 to reduce the impact force, and then enters the second stage, the argon with reduced impact force is uniformly scattered into the closed heat preservation cavity through the capillary hole 414, and there is no direct spraying on the graphite ring 21 for heating optical device.

[0090] In the working state of the graphite ring 21 for heating optical device, an extremely high radiation temperature is generated and rapidly diffuses outward, and the oxidation speed of the graphite ring 21 for heating optical device is rapidly increased, at this time, the graphite ring 21 for heating optical device is wrapped up by the heat preservation and insulation layer 41 to prevent the high temperature diffusion of the graphite ring 21 for heating optical device, 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, high purity argon 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 prolong the heating life of the graphite ring 21 for heating optical device. The cooling medium is circulated into the water cooling channel 33 to take away part of the high temperature which is not completely isolated by the heat preservation and insulation layer 41. The processed optical device can be inserted into the opening 34 to be heated.

[0091] In actual operation, the graphite ring D17 can be selected as the optical device heating graphite ring 21. The surfaces of the optical device heating graphite ring 21, the clamping piece one 22, the clamping piece two 23 and the water-cooled cover 31 are provided with a coating layer, which is processed by special materials. The coating layer has remarkable effects on low resistance, high temperature resistance, high insulation reinforcement and stable physical performance under high temperature and large current conditions.

[0092] In summary, the optical device processing graphite heating device 100 is essentially a water-cooled heat preservation type long-life graphite heating device. By setting the closed heat preservation cavity and the water-cooled channel, a stable heat source temperature field can be quickly and accurately provided, the temperature inside the cavity can be uniformly ensured, the high temperature is isolated from the outside, the external temperature radiation is basically prevented, and the external thermal damage is prevented. The argon gas is filled in the closed heat preservation cavity to replace the oxygen, which can reduce the oxidation speed of the optical device heating graphite ring and increase the working life, and the maximum continuous fault-free working time can reach 12 hours. The optical device processing graphite heating device 100 has a metal part with a conductive function, and the remaining metal parts are provided with a reinforced high-temperature insulation coating to obtain stable mechanical strength, and the working range can heat and draw a large fiber diameter product with a maximum outer diameter of 3 mm.

[0093] The optical device processing graphite heating device 100 has stable heat source temperature field, long service life, low material consumption and low cost. In addition, the device adopts modular design, is convenient to disassemble and maintain, has small structure size, is widely applicable, can overcome the limitation of the operation space of the existing equipment, and can meet the modern optical device processing requirements under some special working conditions.

[0094] It should be understood that the structures, proportions, sizes and the like shown in the drawings of the present application are only used to cooperate with the disclosed content, to enable those skilled in the art to understand and read, and do not limit the implementation conditions of the present application, and therefore do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose of the present application, should still fall within the scope of the disclosed technical content. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" in the present application are only used for clear description, and do not limit the implementation range of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation range of the present application.

[0095] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the method of the present application and its core idea; meanwhile, for the general technical personnel in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed. In conclusion, the content of the present specification should not be understood as the limitation of the present application.

Claims

1. A graphite ring for heating an optical device, characterized in that: The invention comprises two coaxial and spaced-apart closed annular bodies, wherein the first ends of the two closed annular bodies are connected by a connecting arm, and the connecting arm is arranged parallel to the axial direction 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 arranged parallel to the axial direction of the closed annular bodies, 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; the first end and the second end are respectively located on two axial intersection lines of a reference section and a side wall of the closed annular body, and the reference section passes through the central axis of the two closed annular 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. Both sides of the connecting arm are smoothly connected to the outer wall surface of the closed annular body through a circular arc transition surface. The positive electrode pin and the negative electrode pin are respectively integrally formed with the two closed circular bodies, and the two sides of the positive electrode pin are respectively smoothly connected with the outer wall surface of the corresponding closed circular body through the second circular arc transition surface, and the two sides of the negative electrode pin are respectively smoothly connected with the outer wall surface of the corresponding closed circular body through the second circular arc transition surface.

2. The graphite ring for heating an optical device according to claim 1, characterized in that: The inner diameter φ of the two closed circular bodies is 3.2mm~4.9mm; the wall thickness D of the two closed circular bodies is 0.5mm~0.7mm; the radius R1 of the connecting arm is 0.75mm~1.10mm; the radius R2 of the arc transition surface one is 0.45mm~0.6mm, and the minimum spacing d1 between the two arc transition surfaces one is 0.78mm~0.95mm; the radius R3 of the arc transition surface two is 0.55mm~0.65mm, and the minimum spacing d2 between the two arc transition surfaces two is 0.96mm~1.02mm; the thickness t of the positive pin and the negative 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.

3. The graphite ring for heating an optical device according to claim 1 or 2, characterized in that: The axial ends of the connecting arm are aligned with the outer ends of the two closed circular 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 bodies.

4. 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 includes a clamping member 1, a clamping member 2, an electrode terminal 1, an electrode terminal 2 and the graphite ring for heating an optical device according to any one of claims 1 to 3, the graphite ring for heating an optical device is used to penetrate the optical device to be processed, the positive pin is fixed by the clamping member 1 and is electrically connected to the clamping member 1, the negative 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 used for externally connecting a positive voltage and a negative voltage, respectively, 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 includes a water-cooling cover, which is provided with an insulating cavity and a water-cooling channel. The water-cooling channel is located on the periphery of the insulating cavity. The water-cooling cover is fixed to the base, and the graphite ring cover for heating the optical device is buckled inside the insulating cavity. The side wall of the water-cooling cover is provided with an opening communicating with the insulating cavity, and the opening is used for allowing the optical device to be processed to pass through the graphite ring for heating the optical device. The water-cooling channel is used to connect to an external cooling medium source for cooling the outside of the insulating cavity. The heat preservation part includes a heat preservation and heat insulation layer arranged on the inner wall of the heat insulation cavity, a closed heat preservation cavity is formed in the heat preservation and heat insulation layer, and the graphite ring for heating the optical device is located in the closed heat preservation cavity.

5. The graphite heating device for optical device processing according to claim 4, characterized in that: The water-cooling cover includes a cover body and a cover plate. The insulation cavity is opened in the cover body, and the two ends of the insulation 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 insulation cavity; a connector 1 connected to the interior of the closed insulation cavity is provided on the cover plate, and the connector 1 is used to connect to an external constant temperature inert gas source to introduce constant temperature inert gas into the closed insulation cavity.

6. The graphite heating device for optical device processing according to claim 5, characterized in that: The thermal insulation layer includes an insulating end plate 1, an insulating end plate 2 and a closed insulating side plate, the closed insulating side plate is arranged on the inner side wall of the insulating cavity, the insulating end plate 1 is located at the end of the closed insulating side plate facing the base, the tops of the clamping member 1 and the clamping member 2 pass through the insulating end plate 1 and extend into the interior of the closed insulating side plate, the insulating end plate 2 is located at the end of the closed insulating side plate facing the cover plate, and the insulating 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 insulating 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.

7. The graphite heating device for optical device processing according to any one of claims 4 to 6, characterized in that: The first clamping member comprises: a first clamping seat, one end of which is fixedly connected to the first electrode terminal via a clamping member fixing screw, and the other end of which is connected to the base via the clamping member fixing screw; A first clamping block, disposed on the first clamping seat; A second clamping block is detachably connected to the first clamping block via a clamping screw, and the second clamping block cooperates with the first clamping block to clamp the positive electrode pin; The second clamping member includes: A second clamping seat, one end of which is fixedly connected to the second electrode terminal via the clamping member fixing screw, and the other end of which is connected to the base via 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 provided 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 cooperates with the clamping block three to clamp the negative electrode pin.

8. The graphite heating device for optical device processing according to any one of claims 4 to 6, 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 external positive voltage and cable 2 for the external negative 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.

9. The graphite heating device for optical device processing according to any one of claims 4 to 6, characterized in that: The water cooling channel is a C-shaped water cooling channel, and both ends of the C-shaped water cooling channel pass through the side wall of the water cooling cover. The two ends of the C-shaped water cooling channel are respectively provided with a second joint and a third joint.

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