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CN-122013337-A - Composite spinning box for producing superfine denier ES fibers

CN122013337ACN 122013337 ACN122013337 ACN 122013337ACN-122013337-A

Abstract

The application discloses a composite spinning box for producing superfine denier ES fibers, which comprises a box body and a spinning component, wherein the box body is provided with a spinning chamber, the spinning component is arranged in the spinning chamber, the spinning component comprises a spinneret plate and a partition plate, the spinneret plate comprises a first plate body and a second plate body, the first plate body and the second plate body are connected into a whole, a skin component circulation gap is reserved between the first plate body and the second plate body, the first plate body is provided with a composite spinneret hole, one side of the second plate body, which is far away from the first plate body, is provided with a core spinneret body, the core spinneret body is concentric with a mounting hole, the core spinneret body is provided with a core spinneret hole communicated with the composite spinneret hole, the spinneret plate is positioned on one side of the partition plate, the partition plate is provided with a skin component supply hole and a core component supply hole, the core component supply hole is communicated with a gap between the second plate body and the partition plate, and the skin component drainage hole communicated with the skin component supply hole is arranged on the spinneret plate. The application can improve the coaxiality of the sheath spinning channel and the core spinning channel in the spinning component.

Inventors

  • CHEN HANZHAO
  • LIU LISHUI
  • WANG CHENGFENG
  • ZHENG RONGBIN

Assignees

  • 福建省福地新材料股份有限公司

Dates

Publication Date
20260512
Application Date
20260407

Claims (10)

  1. 1. A composite spinning box for producing ultra-fine ES fibers is characterized by comprising a box body (1) and a spinning component (2), wherein the box body (1) is provided with a spinning chamber (11), the spinning component (2) is installed in the spinning chamber (11), the spinning component (2) comprises a spinneret plate (21) and a baffle plate (22), the spinneret plate (21) comprises a first plate body (211) and a second plate body (212) which are parallel to each other, the first plate body (211) and the second plate body (212) are connected into a whole, a skin component circulation gap (213) is reserved between the first plate body (211) and the second plate body (212), the first plate body (211) is provided with composite spinneret holes (214), one side of the second plate body (212) away from the first plate body (211) is provided with a core spinneret body (23), the second plate body (212) is provided with mounting holes (215) for mounting the core spinneret body (23), the core spinneret body (23) and the composite spinneret holes (23) are arranged in a mode of being communicated with the composite spinneret plate (23) and the inner side of the composite spinneret plate (23), the spinneret plate (21) is positioned on one side of the partition plate (22), the partition plate (22) is provided with a skin component supply hole (221) and a core component supply hole (222), the core component supply hole (222) is communicated with a gap between the second plate body (212) and the partition plate (22), and the spinneret plate (21) is provided with a skin component drainage hole (216) communicated with the skin component supply hole (221).
  2. 2. A composite spinning manifold for producing ultra-fine ES fibers according to claim 1, wherein said mounting hole (215) comprises a circular hole section (2151) and a tapered hole section (2152), a large end of said tapered hole section (2152) is engaged with said circular hole section (2151), a small end of said tapered hole section (2152) faces said composite spinning hole (214), said core spinning body (23) comprises a cylindrical section (231) and a tapered section (232), said cylindrical section (231) is in transition fit with said circular hole section (2151), and said tapered section (232) is fitted with said tapered hole section (2152).
  3. 3. The composite spinning box for producing superfine denier ES fibers according to claim 2, wherein a limit sleeve (27) is arranged at one end of the core spinning body (23) away from the first plate body (211) in an interference fit mode, the limit sleeve (27) is abutted against the surface of the first plate body (211) away from the second plate body (212), the end face of the limit sleeve (27) close to the first plate body (211) and the surface of the first plate body (211) away from the second plate body (212) are polished surfaces, and the length of the limit sleeve (27) is longer than the fit length between the core spinning body (23) and the limit sleeve (27).
  4. 4. A composite spinning manifold for producing ultrafine ES fibers according to claim 1, wherein a core component filter layer (26) is provided between the separator (22) and the spinneret plate (21), the core component filter layer (26) is tapered, the convex side of the core component filter layer (26) faces away from the spinneret plate (21), the separator (22) is provided with an inner conical surface (223) adapted to the convex side of the core component filter layer (26), and the position of the core component supply hole (222) corresponds to the center of the core component filter layer (26).
  5. 5. A composite spinning box for producing ultrafine denier ES fibers according to claim 4, wherein a metal mesh (28) is arranged between the core component filter layer (26) and the spinneret plate (21), the metal mesh (28) is of a wave-shaped structure, the metal mesh (28) is in a pre-pressing deformation state, the spinneret plate (21) and the partition plate (22) are connected through a threaded fastener (24), and the threaded fastener (24) is simultaneously connected with the box body (1).
  6. 6. A composite manifold for use in the production of ultra-fine ES fibers as set forth in claim 5, wherein said core component filter layer (26) comprises a primary filter layer (261) and a secondary filter layer (262), said primary filter layer (261) being tapered, said secondary filter layer (262) being plate-like, said primary filter layer (261) being less accurate than said secondary filter layer (262), said secondary filter layer (262) being located on a side of said primary filter layer (261) adjacent to said spinneret (21), said convex side of said primary filter layer (261) being mated with said tapered surface of said separator (22).
  7. 7. The composite spinning manifold for producing ultrafine ES fibers according to claim 6, wherein the separator (22) is inserted with a plurality of guide pipes (25) through the sheath component supply holes (221), and the guide pipes (25) are inserted with the sheath component guide holes (216) in one-to-one correspondence.
  8. 8. A composite manifold for ultra-fine ES fiber production according to claim 7, wherein said sheath component introduction holes (216) are distributed along a central circumferential array of said spinneret plate (21), said sheath component introduction holes (216) include through holes (2161) and turning holes (2162), said through holes (2161) are straight through said sheath component circulation gap (213), said turning holes (2162) include longitudinal holes (2163) and transverse holes (2164) that are in communication with each other, said longitudinal holes (2163) are parallel to said through holes (2161), an end of said longitudinal holes (2163) remote from said transverse holes (2164) is in communication with said sheath component supply holes (221), and an end of said transverse holes (2164) remote from said longitudinal holes (2163) is in communication with said sheath component circulation gap (213).
  9. 9. The composite spinning box for producing superfine denier ES fibers according to claim 8, wherein the threaded fasteners (24) comprise bolts (241) and nuts (242), the number of the threaded fasteners (24) is smaller than that of the guide pipes (25), holes for the bolts (241) to penetrate are formed in the partition plate (22) and the spinneret plate (21), the bolts (241) penetrate through the guide pipes (25) when installed, and the holes for the bolts (241) to penetrate through are communicated with the sheath component guide holes (216) through the spinneret plate (21).
  10. 10. The composite spinning box for producing superfine denier ES fibers according to claim 9, wherein a primary step surface (111) and a secondary step surface (112) are arranged on the inner wall of the spinning chamber (11), the spinneret plate (21) is abutted against the primary step surface (111), a first sealing gasket (113) is arranged between the spinneret plate (21) and the primary step surface (111), a second sealing gasket (114) is arranged between the partition plate (22) and the secondary step surface (112), an arch support gasket (243) is sleeved on the bolt (241), the bolt (241) penetrates through the arch part of the arch support gasket (243), the bolt cap of the bolt (241) is abutted against the arch part of the arch support gasket (243), the arch support gasket (243) is abutted against the partition plate (22), and one end of the arch support gasket (243) is opposite to the secondary step surface (112).

Description

Composite spinning box for producing superfine denier ES fibers Technical Field The application relates to the field of spinning technology, in particular to a composite spinning box for producing superfine denier ES fibers. Background ES fibers are a typical sheath-core bicomponent composite fiber. The production process includes compounding two kinds of polymer together in molten state, extruding, cooling, drawing, packing, drawing, post drawing, crimping, stoving and cutting to form short fiber. The core component of the composite spinning box is a composite spinning component. Two polymers with different properties or structures respectively pass through a sheath spinning channel and a core spinning channel of the composite spinning component, and are surrounded by one component along the fiber axial direction to continuously form a sheath layer and a core layer, and the sheath layer and the core layer are compositely formed at the tail end of a filament outlet hole of a spinneret plate to form the fiber with a special cross-section shape. Both have an interface and only one component has an outer boundary. The coaxiality of the sheath spinning channel and the core spinning channel has an important influence on the molding quality of the sheath-core composite fiber, but the sheath spinning channel and the core spinning channel are often arranged on structural members with different composite spinning components, so that the coaxiality of the sheath spinning channel and the core spinning channel is difficult to ensure, the quality of the sheath-core composite fiber is difficult to ensure, and the quality influence on the superfine denier ES fiber is particularly obvious. Disclosure of Invention In order to improve the coaxiality of a sheath spinning channel and a core spinning channel in a spinning assembly, the application provides a composite spinning box for producing superfine denier ES fibers. The application provides a composite spinning box for producing superfine denier ES fibers, which adopts the following technical scheme: A composite spinning box for producing superfine denier ES fibers comprises a box body and a spinning component, wherein the box body is provided with a spinning cavity, the spinning component is installed in the spinning cavity, the spinning component comprises a spinneret plate and a partition plate, the spinneret plate comprises a first plate body and a second plate body which are parallel to each other, the first plate body and the second plate body are connected into a whole, a skin component circulation gap is reserved between the first plate body and the second plate body, the first plate body is provided with a composite spinneret hole, one side of the second plate body far away from the first plate body is provided with a core spinneret body, the second plate body is provided with a mounting hole for mounting the core spinneret body, the core spinneret body and the mounting hole are kept concentric, the core spinneret body and the composite spinneret hole are arranged in one-to-one correspondence, the partition plate is used for separating an inner side space of the spinning cavity, one side of the partition plate is provided with a skin component supply hole, and a skin component supply hole are arranged between the partition plate and the skin component supply hole, and the skin component supply hole are communicated with the partition plate. Through adopting above-mentioned technical scheme, spout the silk core and install in the mounting hole on first plate body, the core composition supply hole on the silk core aligns with the compound silk spraying hole on the second plate body. Because the first plate body and the second plate body are connected into a whole, the composite spinneret hole and the mounting hole can be formed by one-time processing on a machine tool, so that coaxiality error factors generated by assembly connection between the first plate body and the second plate body are removed, the coaxiality between the composite spinneret hole and the mounting hole is guaranteed, and the quality of skin-core composite spinning is improved. The coaxiality precision of the sheath-core composite spinning can be reliably controlled, and the processing requirement of the superfine denier ES fiber can be met. Optionally, the mounting hole includes round hole section and taper hole section, the big end of taper hole section with the round hole section links up, the tip of taper hole section is towards compound spinneret orifice, the core spinneret body includes cylinder section and cone section, the cylinder section with the round hole section adopts transition fit, the cone section with taper hole section adaptation. Through adopting above-mentioned technical scheme, the cone section of core spinning body cooperates with the taper hole section of mounting hole, can make the core spinning body keep higher concentricity with the mounting hole between. The cylindric