Graphite furnace for glass rod slitting and glass rod slitting method

Abstract

The invention discloses a graphite oven for slitting a glass rod and a method for slitting the glass rod. The graphite oven comprises a cooling water system, a gas protection system, and an oven body, wherein the oven body comprises a hearth, a first cooling tube, a second cooling tube, a middle drivepipe, a first insulation quilt, a second insulation quilt, a heating body, an electrode, a first sealing mechanism, a second sealing mechanism, a first fixture and a second fixture, the hearth is surrounded by the wall of the hearth, the first cooling tube and the second cooling tube are respectively in sealed connection with two ends of the hearth,, the middle drivepipe penetrates through the interiors of the hearth, the first cooling tube and the second cooling tube, the first insulation quilt and the second insulation quilt sheath outside the middle drivepipe, are arranged in axial direction of the middle drivepipe, and are arranged in the hearth, a clearance exists between the first insulation quilt and the second insulation quilt, the heating body is opposite to the clearance between the first insulation quilt and the second insulation quilt, and the first fixture and the second fixture can clamp two ends of the glass rod to be slit and can rotate and move toward the direction far from or close to the other fixture under the action of a driving device. The graphite oven can solve the problem of low efficiency in slitting the glass rod and trimming the ends.

Description

technical field [0001] The invention relates to the field of optical fiber technology, more specifically, to a graphite furnace for cutting glass rods and a method for cutting glass rods. Background technique [0002] Optical fiber preform is an important basic mechanism for producing optical fiber. At present, VAD (verticalaxialdeposition, vertical axial deposition method) method and OVD (outside vapor deposition method, external vapor phase deposition method) method are one of the main technical routes for the manufacture of optical fiber preforms. After cladding the preformed rod completed in the OVD method to form a glass rod, one end needs to be shaped, that is, the end should be trimmed into a tapered shape to meet the requirements of the wire drawing furnace. Wherein, when trimming one end of the glass rod, it needs to be cut so that the length of the trimmed glass rod meets the standard. At present, there are mainly two methods for trimming one end of the glass rod...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the first object of the present invention is to provide a graphite furnace for cutting glass rods. The structural design of the graphite furnace for cutting glass rods can effectively solve the problem of cutting glass rods and trimming the ends. Lower problem, the second object of the present invention is to provide a kind of method that utilizes above-mentioned graphite furnace to cut glass rod

Images