Heat drafting device used during carbon fiber precursor production
A carbon fiber raw silk, thermal drawing technology, applied in fiber processing, fiber chemical characteristics, rayon filament physical therapy and other directions, can solve problems such as broken and residual silk, to prevent local overheating, avoid injury, and avoid boiling. The effect of silk phenomenon
Active Publication Date: 2017-05-10
HARBIN TIANSHUN CHEM TECH DEV CO LTD
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Problems solved by technology
[0004] The present invention aims to solve the technical problem that the existing thermal drafting device is prone to broken filaments; and provides a thermal drafting device in the production of carbon fiber precursors
Method used
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specific Embodiment approach 1
[0015] Specific implementation mode one: combine figure 1 and 2 To illustrate, a thermal drafting device in the production of carbon fiber precursors in this embodiment includes a drafting roller 1, a bath 3 and a heating pipe 4, and the thermal drafting device also includes an upper cover orifice plate 5, which is close to the inner wall of the bath 3 Two drafting rollers 1 are symmetrically arranged at both ends of the two drafting rollers 1, and the bottom edge line of the two drafting rollers 1 is lower than the upper surface of the bath 3, and heating pipes 4 are evenly arranged near the bottom of the bath 3; the upper part of the heating pipe 4 is covered with a cover The orifice plate 5, the upper cover orifice plate 5 is composed of a connected top plate 51 and inclined plates 52 symmetrically arranged at both ends of the top plate 51, the arc transition between the top plate 51 and the inclined plate 52, the other two of the top plate 51 The end is fixed on the inner...
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Abstract
The invention discloses a heat drafting device used during carbon fiber precursor production, and belongs to the field of carbon fiber precursor textile equipment. The heat drafting device is characterized in that the heat drafting device is symmetrically provided with two drafting rolls which are close to two ends of the inner wall of bath, and heating pipes are uniformly arrayed and are close to the bottom of the bath; an upper cover orifice plate covers positions above the heating pipes and comprises a top plate and oblique plates, the top plate and the oblique plates are integrally connected with one another, the oblique plates are symmetrically arranged at two ends of the top plate, the mesh-shaped top plate and the oblique plates are in arc transition, the bottoms of the two oblique plates are fixedly connected with the bottom of the bath, and the top plate is positioned between the drafting rolls and the heating pipes. The heat drafting device has the advantages that technical problems of pot boiling phenomena, easiness in yarn boiling phenomena and increase of broken yarns and residual yarns, roll winding phenomena in subsequent working procedures or deterioration of integral physical and mechanical properties of strands due to easiness in local overheating of the peripheries of existing heating pipes of existing heat drafting devices during heating can be solved; the heat drafting device can be used for carrying out heat drafting during carbon fiber precursor production.
Description
technical field [0001] The invention belongs to the field of carbon fiber precursor textile equipment, and in particular relates to a thermal drafting device in the production of carbon fiber precursor. Background technique [0002] The drafting device is an indispensable equipment throughout the whole process of carbon fiber raw silk spinning. Its main function is to apply external force in the axial direction of the tow under certain conditions to thin the single fiber in the tow and increase the The degree of orientation changes the plastic state of a single fiber from a low-strength, high-elongation plastic state to a high-strength, low-elongation elastic state. [0003] When the existing hot drawing device adopts the heating tube to heat, local overheating around the heating tube is easy to occur and bubbles are easy to be generated. The disturbance of the liquid medium and the impact of the bubbles on the wire are easy to produce the phenomenon of broken wire and resid...
Claims
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IPC IPC(8): D01F9/12D01D10/00
CPCD01D10/00D01F9/12
Inventor 孟凡钧孟子顺
Owner HARBIN TIANSHUN CHEM TECH DEV CO LTD