Two-component composite fiber spinning assembly

Abstract

The invention discloses a two-component composite fiber spinning assembly, and belongs to the technical field of composite spinning equipment. The two-component composite fiber spinning assembly comprises a barrel, a spinneret plate, a melt distribution plate, a two-cavity filter barrel and a barrel cover, wherein the spinneret plate is arranged at the bottom of a barrel cavity, and spinneret plate capillary spinneret holes are formed in the spinneret plate; the melt distribution plate is arranged above the spinneret plate in an overlapped mode, melt distribution holes are formed in the melt distribution plate, and a left material collecting cavity and a right material collecting cavity of the melt distribution plate are formed in one side of the melt distribution plate; the two-cavity filter barrel is arranged on the upper portion of the barrel cavity and provided with a left filter cavity and a right filter cavity, a first-component melt filter mechanism is arranged in the left filter cavity, and a second-component melt filter mechanism is arranged in the right filter cavity; and the barrel cover is fixed to the top face of the barrel. The two-component composite fiber spinning assembly is characterized in that the spinneret plate capillary spinneret holes comprise a first-component melt discharging hole and a second-component melt discharging hole of the spinneret plate; themelt distribution holes comprise a first-component melt guide hole, a second-component melt guide hole, a first-component melt annular guide groove and a second-component melt annular guide groove ofthe melt distribution plate; and the first-component melt guide hole and the second-component melt guide hole are formed in the barrel cover. The quality of two-component fibers is guaranteed, the melt leakage probability is reduced, the height is reduced, inspection and protection are facilitated, and the structure is simplified.

Description

technical field [0001] The invention belongs to the technical field of composite spinning equipment, and in particular relates to a two-component composite fiber spinning component. Background technique [0002] A typical example of the above-mentioned two-component composite fiber is a polylactic acid two-component composite fiber spun from a high-molecular-weight polylactic acid melt and a low-molecular-weight polylactic acid melt with a wide difference in molecular weight. For this, see The "polylactic acid two-component composite fiber spinning process" introduced by the Chinese invention patent application publication number CN105714391A. However, the above-mentioned two-component composite fiber is not limited to the above-mentioned polylactic acid two-component composite fiber, for example, it can also be the two-component composite fiber mentioned by CN101109110A, CN101798714B and CN104195673B. [0003] Taking polylactic acid two-component composite fiber as an exam...

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Problems solved by technology

[0004] In the disclosed Chinese patent literature, it can be seen that all the technical information related to the two-component composite fiber spinning pack is typically such as the "internal filter structure of the polylactic acid two-component composite fiber spinning pack" recommended by CN204509515U. Although this patent can Reach the purpose of the invention recorded in paragraph 0005 of its description and embody the technical effects mentioned in paragraph 0010 to 0024 of the description, but there are the following shortcomings: one, due to the two polylactic acid melts filtered through the upper and lower sand cups respectively After arriving at the feeding trough of the spinneret, it flows into the same capillary spinneret hole and is sprayed out from the same capillary spinneret hole. Therefore, the homogeneity of the two different polylactic acid melts is difficult to guarantee. The quality of the polylactic acid two-component composite fiber is affected; secondly, because the two melts are from the two feed ports at the top of the height direction, that is, the polylactic acid component A feed port and the polylactic acid B group The feed inlets are respectively introduced into the upper sand cup filter sand and the lower sand cup filter sand for filtration, so it is required to use the box melt conveying pipeline between the spinning box and the two feeding inlets, which not only increases the size of the spinning box and the two feeding ports. The connection difficulty of the spinning assembly increases the probability of leakage; thirdly, due to the need to use the upper sand cup and the lower sand cup for filtering the two kinds of melts respectively and to arrange a feed distribution with a connecting pipe between the upper and lower sand cups plate, so the structure is relatively complex

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