CN112921423A - Double-component fiber spinning assembly - Google Patents
Double-component fiber spinning assembly Download PDFInfo
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- CN112921423A CN112921423A CN202110084849.1A CN202110084849A CN112921423A CN 112921423 A CN112921423 A CN 112921423A CN 202110084849 A CN202110084849 A CN 202110084849A CN 112921423 A CN112921423 A CN 112921423A
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- melt
- spinning
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/106—Filtering
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
A double-component fiber spinning assembly belongs to the technical field of spinning equipment. Including first, second spinning case and spinning mechanism, establish first measuring pump in the first spinning incasement, establish the second measuring pump in the second spinning incasement, spinning mechanism is including establishing first spinning fuse-element filter equipment in first spinning case, establishing second spinning fuse-element filter equipment and the spinning device in the second spinning incasement, characteristics: the spinning mechanism further comprises a spinning device box, the spinning device box corresponds to the lower portions of the first spinning box and the second spinning box, the spinning device is arranged in the spinning device box, the lower portions of the first spinning melt filtering device and the second spinning melt filtering device stretch into the spinning device box, the left end of the spinning device is matched and connected with the first spinning melt filtering device and receives the first melt to be spun, and the right end of the spinning device is matched and connected with the second spinning melt filtering device and receives the second melt to be spun. The probability of mutual influence of polylactic acid melts with different melt temperatures in the same shell is reduced, the fiber forming efficiency is improved, and the strength of the polylactic acid fiber is guaranteed.
Description
Technical Field
The invention belongs to the technical field of spinning equipment, and particularly relates to a two-component fiber spinning assembly.
Background
The above-mentioned bicomponent fiber means a polylactic acid composite fiber spun from two melts having relatively large or even great difference in molecular structure and correspondingly different melting points, such as a polylactic acid melt, and for this purpose, reference may be made to the "polylactic acid bicomponent composite fiber spinning process" described in chinese patent application publication No. CN105714391A, however, the above-mentioned bicomponent fiber is not limited to the polylactic acid bicomponent fiber, and may be, for example, bicomponent fibers such as those mentioned in CN101109110A and patent publication nos. CN101798714B and CN 104195673B.
As is known in the art, the spinning of component fibers is carried out by feeding two melts of different materials into respective spinning manifolds through respective screw extruders, each spinning manifold being provided with a spinning metering pump associated with the screw extruder, and a spinning assembly being provided in one of the manifolds. After the dried slice raw materials are melted and extruded by a screw extruder, melt is quantitatively extruded into a filtering mechanism of a structural system of a spinning assembly by the spinning metering pump through a melt pipeline for precise filtering, the melt pressure is balanced, and then the melt is extruded out from a spinneret orifice on a spinneret plate of the structural system of the spinning mechanism below the filtering mechanism and cooled to form fibers. As is also known in the art, the spinning assembly, screw extruder and metering pump are important and are referred to as three major elements of a complete spinning apparatus.
FIG. 5 is a schematic view of a prior art bicomponent fiber spinning apparatus. The spinning device comprises a first spinning box I1, a second spinning box II 2 and a spinning mechanism 3, spinning raw materials serving as a first component are melt-extruded by a first screw extruder I100 and are introduced into a first metering pump I11 arranged in the first spinning box I1 through a first melt conveying pipeline, spinning raw materials serving as a second component are melt-extruded by a second screw extruder II 200 and are introduced into a second metering pump II 21 arranged in the second spinning box II 2 through a second melt conveying pipeline, spinning melts from the first metering pump I11, namely the first component spinning melt, and spinning melts from the second metering pump II 21, namely the second component spinning melt are converged to the spinning mechanism 3 (also called a spinneret plate assembly) arranged in the first spinning box I1, and are sprayed from spinneret holes in a spinneret plate of the spinning mechanism and formed into composite fibers. The foregoing structure is fully suitable for conventional chemical fiber spinning, but since the spinning mechanism 3 is disposed in the first spinning manifold i 1 (and may be disposed in the second spinning manifold ii 2, of course) and it is necessary to ensure excellent fluidity of the melt, the problem of serious degradation of the low melting point substance is caused for polylactic acid fiber spinning, and finally the strength of the obtained polylactic acid fiber cannot meet the requirement expected by the industry.
Technical information related to the bicomponent fiber spinning module such as CN211620677U (bicomponent composite fiber spinning module), CN208762611U (spinning module for bicomponent fiber), CN108893790B (PLA and PTT bicomponent semi-embedded composite fiber and its preparation method), and CN108707987A (spinning module for bicomponent semi-embedded composite fiber), etc. can be found in the published chinese patent documents. Even multicomponent spin packs, such as CN211620676U (spin pack for multicomponent fibers) are found. However, none of the above-cited patents teach the solution to the problem of degradation of low melting point materials in two-component materials, and the solutions described below are based on this background.
Disclosure of Invention
The invention aims to provide a bicomponent fiber spinning component which is helpful for ensuring good melting effect of the melt, ideal fluidity, excellent pressure-stabilizing filtration and effectively avoiding the degradation of low-melting-point substances so as to ensure the proper strength of fibers.
The object of the present invention is achieved by a bicomponent fiber spinning assembly comprising a first spinning beam I, a second spinning beam II and a spinning mechanism, wherein a first metering pump I for receiving a first spinning melt as a first component melt-extruded by a first screw extruder and introduced by a first melt pipe is provided in the first spinning beam I, a second metering pump II for receiving a second spinning melt as a second component melt-extruded by a second screw extruder and introduced by a second melt pipe is provided in the second spinning beam II, the spinning mechanism comprises a first spinning melt filtering device I for receiving the first spinning melt as a first component melt introduced by the first spinning beam I, which is provided in the first spinning beam I and is coupled to the first metering pump I at a position corresponding to a lower part of the first metering pump I, a first spinning melt filtering device I provided in the second spinning beam II and is coupled to the second metering pump II at a position corresponding to a lower part of the second metering pump II A second spinning melt filtering device II and a spinning device which are matched and connected with the two metering pumps II and are used for receiving the second spinning melt led out by the second metering pumps II, and is characterized in that the spinning mechanism also comprises a spinning device box, the spinning device boxes are commonly corresponding to the lower parts of the first spinning box I and the second spinning box II, the spinning device is arranged in a spinning device box, the lower parts of the first spinning melt filtering device I and the second spinning melt filtering device II are inserted into the spinning device box, the left end of the spinning device is connected with the first spinning melt filtering device I in a matching mode and receives a first to-be-spun melt which is led out after being filtered by the first spinning melt filtering device I, the right end of the spinning device is connected with the second spinning melt filtering device II in a matched mode and receives the second to-be-spun melt which is led out after being filtered by the second spinning melt filtering device.
In a specific embodiment of the present invention, the second spinning melt filtering device ii disposed in the second spinning manifold ii is the same in structure as the first spinning melt filtering device i disposed in the first spinning manifold i, the first spinning melt filtering device i includes a filtering cylinder, a gland defining ring nut, an upper filtering net, a lower filtering net, a melt guiding disc and a filtering melt guiding nozzle, the filtering cylinder is disposed in the first spinning manifold i, the filtering cylinder has a filtering cylinder cavity, in a use state, a filtering medium is disposed in the filtering cylinder cavity, the upper filtering net is laid on the filtering medium, the gland is supported on the upper filtering net, a gland melt introducing hole penetrating through the gland in a height direction is formed at a central position of the gland, the first melt from the first metering pump i is introduced through the gland melt introducing hole, the gland limiting ring nut is sleeved outside the gland and the gland limiting ring nut external thread on the outer wall of the gland limiting ring nut is matched with the filtering cylinder inner wall thread formed on the inner wall of the filtering cylinder, the upper part of the filtering melt outlet nozzle is positioned at the lower part of the filtering cylinder body cavity and supported at the lower part of the filtering cylinder body, the lower part of the filtering melt outlet nozzle extends out of the filtering cylinder body cavity and is connected with the spinning device, a filtering melt outlet hole is arranged at the central position of the filtering melt outlet nozzle, the upper part of the filtering melt outlet hole is communicated with the filtering cylinder body cavity, the lower part of the filtering melt outlet hole is communicated with the spinning device arranged in the box of the spinning device, the lower filtering net is arranged between the lower part of the filtering medium and the upward side of the melt outlet disc, and the melt outlet disc is supported at the peripheral edge part of the upward side of the filtering melt outlet nozzle, and melt leading-out disc through holes are arranged on the melt leading-out disc at intervals.
In another specific embodiment of the present invention, the gland is in the shape of a truncated cone, and a metering pump melt outlet interface mating stack ring extends from the upper part of the gland, the central area of the metering pump melt outlet interface mating stack ring is communicated with the gland melt inlet hole, and a metering pump melt outlet interface mating internal thread is formed on the inner wall of the metering pump melt outlet interface mating stack ring; a gland buffering sealing ring is arranged between the outer wall of the gland and the lower part of the gland limiting ring nut; the first metering pump I is provided with a metering pump melt leading-out interface, and the metering pump melt leading-out interface extends into the metering pump melt leading-out interface matching stack ring and is matched and connected with the metering pump melt leading-out interface matching internal thread.
In a further embodiment of the invention, a downwardly recessed, flared melt receiving chamber is formed in the central region of the upwardly facing side of the filtered melt outlet nozzle, which corresponds to the central position of the bottom of the melt receiving chamber and communicates with the melt receiving chamber; the filter medium is sea sand, glass beads or carborundum.
In a further embodiment of the present invention, a cartridge filter melt outlet nozzle holder support ring is formed at the bottom of the filter cartridge in a direction toward the cavity of the filter cartridge, a filter melt outlet nozzle holder is formed at the peripheral edge portion of the upper portion of the filter melt outlet nozzle, the filter melt outlet nozzle holder is supported on the cartridge filter melt outlet nozzle holder support ring, and a holder seal is provided between the filter melt outlet nozzle holder and the cartridge filter melt outlet nozzle holder support ring.
In still another specific embodiment of the present invention, a housing fixing bolt hole is provided at the bottom of the filtering melt outlet and around the filtering melt outlet at intervals, and the housing fixing bolt hole is connected to the spinning device disposed in the spinning device housing; and an aluminum sealing gasket for sealing the spinning device is arranged at the orifice of the filtered melt outlet hole of the filtered melt outlet nozzle.
In a more specific embodiment of the present invention, the spinning apparatus includes a housing, a spinneret, a melt distribution plate, a melt guide plate, and a cover plate, the housing is disposed in the spinning apparatus casing, a spinneret support ring is formed at a lower portion of a housing cavity of the housing and around the housing cavity, housing fixing bolts are disposed at left and right ends of the housing at intervals, cover plate fixing bolts are further disposed at the periphery of the housing at intervals, the filtered melt discharge nozzle is fixedly connected to the housing fixing bolts through the housing fixing bolt holes, the spinneret is disposed in the housing cavity, and a peripheral edge portion of the spinneret is supported on the spinneret support ring, a spinneret hole group penetrating from an upper surface to a lower surface of the spinneret plate is disposed at intervals on the spinneret plate, the melt distribution plate is stacked on a side of the spinneret plate facing upward in the housing cavity, a left melt receiving cavity of a distribution plate is formed at the left end of the upward side of the melt distribution plate, a left melt receiving cavity melt leading-out hole is formed in the left melt receiving cavity of the distribution plate, a right melt receiving cavity of the distribution plate is formed at the left end of the upward side of the melt distribution plate, a right melt receiving cavity melt leading-out hole is formed in the right melt receiving cavity of the distribution plate, a melt distribution groove set is formed at the bottom of the melt distribution plate and communicated with the left melt receiving cavity melt leading-out hole, the right melt receiving cavity melt leading-out hole and the spinneret hole set, a melt guide plate is superposed on the melt distribution plate in the shell cavity, a left melt guide plate guide column is formed at the left end of the upward side of the melt guide plate, a left guide column guide hole is formed at the central position of the left melt guide plate guide column, and the left guide column guide hole corresponds to and is communicated with the left melt receiving cavity of the melt distribution plate, a right material guiding column of the melt guiding plate is formed at the right end of the upward side of the melt guiding plate, a right material guiding column guide hole is formed at the central position of the right material guiding column of the melt guiding plate, the guide hole of the right guide post corresponds to and is communicated with the right receiving cavity of the melt of the distribution plate, the cover plate is arranged on one side of the melt guide plate facing upwards, the peripheral edge part of the cover plate is matched with the upper surface of the shell, a left guide post sleeve hole is arranged at the left end of the cover plate, a right guide post sleeve hole is arranged at the right end of the cover plate, the left guide post sleeve hole is sleeved on the left guide post of the melt guide plate, the right guide post sleeve hole is sleeved on the right guide post of the melt guide plate, cover plate fixing bolt holes are arranged at the peripheral edge of the cover plate at intervals, the cover plate fixing bolts are fixed with the cover plate fixing bolt holes, the shell fixed connecting bolt penetrates through a bolt abdicating hole formed in the cover plate and then is screwed into the shell fixed connecting bolt hole.
In a further specific embodiment of the present invention, the left receiving cavity melt lead-out hole includes a pair of left receiving cavity outer side runner melt guide holes and a pair of left receiving cavity inner side runner melt guide holes; the right material receiving cavity melt leading-out hole comprises a pair of right material receiving cavity outer side runner melt guide holes and a pair of right material receiving cavity inner side runner melt guide holes; the melt distribution groove group comprises a first annular groove I, a second annular groove II, a third annular groove III and a fourth annular groove IV which are communicated from the left end to the right end of the bottom of the melt distribution plate and are communicated with the spinneret hole group on the spinneret plate, the third annular groove III is positioned on the inner side of the first annular groove I, the second annular groove II is positioned on the inner side of the third annular groove III, the fourth annular groove IV is positioned on the inner side of the second annular groove II, the pair of melt guide holes on the outer side of the left receiving cavity are communicated with the first annular groove I, the pair of melt guide holes on the inner side of the left receiving cavity are communicated with the second annular groove II, and the pair of melt guide holes on the outer side of the right receiving cavity are communicated with the third annular groove III, the pair of melt guide holes of the inner side runners of the right receiving cavity are communicated with a fourth annular channel IV; the spinneret orifice group comprises a first spinneret orifice I, a second spinneret orifice II and a third spinneret orifice III, wherein a first annular channel I and a third annular channel III are communicated with the upper part of the first spinneret orifice I together, a third annular channel III and a second annular channel II are communicated with the upper part of the second spinneret orifice II together, and a second annular channel II and a fourth annular channel IV are communicated with the upper part of the third spinneret orifice III together.
In a still more specific embodiment of the present invention, the upper filter screen and the lower filter screen have the same structure, and both the upper filter screen and the lower filter screen are stainless steel screens.
In yet another embodiment of the present invention, the upper portions of the first orifice i, the second orifice ii and the third orifice iii are all oval in shape.
The technical scheme provided by the invention has the technical effects that: because the spinning device box is additionally arranged at the lower parts of the first spinning box I and the second spinning box II, the spinning devices of the spinning mechanism are arranged in the spinning device box in a combined manner, the lower parts of the first spinning melt filtering device I and the second spinning melt filtering device II which are used as the structural systems of the spinning mechanism and are respectively arranged in the first spinning box I and the second spinning box II are inserted into the spinning device box, the left end of the spinning device is connected with the first spinning melt filtering device I in a matching manner, and the right end of the spinning device is connected with the second spinning melt filtering device II in a matching manner, the requirement that melts of two components are converged into a spinneret plate of the structural system of the spinning device which is independent and arranged in the spinning device box to generate bicomponent fibers can be met, the probability that polylactic acid melts of different melt temperatures influence each other in the same shell can be reduced, the good melting effect, ideal fluidity and excellent pressure-stabilizing filtering effect of the melt are guaranteed, the degradation of the low-melting-point body is effectively avoided, the fiber forming efficiency is improved, and the strength of the polylactic acid fiber is guaranteed.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
FIG. 2 is a schematic view of the first spinning melt filtration unit I shown in FIG. 1.
Fig. 3 is a detailed structural view of the spinning device shown in fig. 1.
FIG. 4 is a bottom view of the melt distribution plate shown in FIG. 3.
FIG. 5 is a schematic diagram of a prior art two-component spinning apparatus.
Detailed Description
In order to clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, should be considered as the technical scope of the present invention.
In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are exemplified by the illustrated position status, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.
Referring to FIG. 1, there are shown a first spinning beam I1, a second spinning beam II 2 and a spinning mechanism 3, a first metering pump I11 for receiving a first spinning melt of a first composition melt extruded from a first screw extruder and introduced from a first melt pipe is provided in the first spinning beam I1, a second metering pump II 21 for receiving a second spinning melt of a second composition melt extruded from a second screw extruder and introduced from a second melt pipe is provided in the second spinning beam II 2, the spinning mechanism 3 comprises a first spinning melt filtering device I31 for receiving the first spinning melt of the first composition melt introduced from the first spinning beam I11, which is provided in the first spinning beam I1 and coupled with the first metering pump I11 at a position corresponding to a lower part of the first metering pump I11, a second spinning melt filtering device I31 provided in the second spinning beam II 2 and coupled with the second metering pump II at a position corresponding to a lower part of the second metering pump II 21 II 21 is connected to a second spinning melt filter II 32 and a spinning device 33 for receiving the second spinning melt from the second metering pump II 21. Since the aforementioned first screw extruder and second screw extruder are known in the art and reference is also made to the structure of fig. 5, which the applicant refers to in the background art column, although not shown in fig. 1, it does not cause any confusion to the understanding.
The technical key points of the technical scheme provided by the invention are as follows: the spinning mechanism 3 further includes a spinning device box 34, the spinning device box 34 corresponds to the lower portions of the first spinning box i 1 and the second spinning box ii 2 in common and preferably forms an integral structure with the lower portions of the first spinning box i 1 and the second spinning box ii 2, the spinning device 33 is disposed in the spinning device box 34, the lower portions of the first spinning melt filtering device i 31 and the second spinning melt filtering device ii 32 extend into the spinning device box 34, the left end of the spinning device 33 is coupled to the first spinning melt filtering device i 31 and receives the first to-be-spun melt filtered by the first spinning melt filtering device i 31, and the right end of the spinning device 33 is coupled to the second spinning melt filtering device ii 32 and receives the second to-be-spun melt filtered by the second spinning melt filtering device.
Preferably, a heat insulating layer 341, i.e., a heat insulating jacket is provided around the outside of the spinning device tank 34.
Referring to fig. 2 in conjunction with fig. 1, since the second spin melt filter device ii 32 provided in the second spin pack ii 2 has the same structure as the first spin melt filter device i 31 provided in the first spin pack i 1, the applicant will describe in detail only the first spin melt filter device i 31 below, the first spin melt filter device i 31 includes a filter cylinder 311, a gland 312, a gland defining ring nut 313, an upper filter screen 314, a lower filter screen 315, a melt discharge disc 316, and a filtered melt discharge nozzle 317, the filter cylinder 311 is provided in the first spin pack i 1, the filter cylinder 311 has a filter cylinder chamber 3111, in a use state, a filter medium 318 is provided in the filter cylinder chamber 3111, the upper filter screen 314 is laid on the filter medium 318, the gland 312 is supported on the upper filter screen 314, a cover melt introduction hole 3121 passing through the cover 312 in the height direction is formed at the center of the cover 312, the first melt from the first metering pump i 11 is introduced through the cover melt introduction hole 3121, the cover limiting ring nut 313 is fitted to the outside of the cover 312 and a cover limiting ring nut external thread (not shown) on the outer wall of the cover limiting ring nut 313 is engaged with a filter cylinder inner wall thread (not shown) formed on the inner wall of the filter cylinder 311, the upper portion of the filter melt outlet 317 is located at the lower portion of the filter cylinder body cavity 3111 and supported at the lower portion of the filter cylinder body 311, and the lower portion of the filter melt outlet 317 extends to the outside of the filter cylinder body cavity 3111 and is connected to the spinning device 33, a filter melt outlet hole 3171 is formed at the center of the filter melt outlet 317, the upper portion of the filter melt outlet hole 3171 is communicated with the filter cylinder body cavity 3111, and the lower part is communicated with the spinning device 33 arranged in the spinning device box 34, the lower filter screen 315 is arranged between the lower part of the filter medium 318 and the upward side of the melt discharge disk 316, the melt discharge disk 316 is supported at the peripheral edge part of the upward side of the filtered melt discharge nozzle 317, and the melt discharge disk 316 is provided with melt discharge disk through holes 3161 at intervals.
The gland 312 is in a shape of a truncated cone, a metering pump melt leading-out interface matching stack ring 3122 extends from the upper part of the gland 312, the central area of the metering pump melt leading-out interface matching stack ring 3122 is communicated with the gland melt leading-in hole 3121, and a metering pump melt leading-out interface matching internal thread 31221 is formed on the inner wall of the metering pump melt leading-out interface matching stack ring 3122; a gland buffering sealing ring 3123 is set between the external wall of the gland 312 and the lower portion of the gland limiting ring nut 313; the first metering pump i 11 has a metering pump melt outlet port 111, the metering pump melt outlet port 111 protrudes into the metering pump melt outlet port mating stack ring 3122 and is mated with the metering pump melt outlet port mating internal thread 31221, and preferably, a gland melt inlet hole sealing pad 31211 may be further provided at a position of an upper orifice of the gland melt inlet hole 3121.
As shown in fig. 1 and 2, a downward recessed trumpet-shaped melt receiving chamber 3172 is formed in a central region on the upward facing side of the filtered melt outlet 317, and the filtered melt outlet 3171 corresponds to a central position of the bottom of the melt receiving chamber 3172 and communicates with the melt receiving chamber 3172; in the present embodiment, the filter medium is sea sand, but glass beads, silicon carbide or other equivalent filter media may be used.
With reference to fig. 2 and fig. 1, a cylinder filtered melt outlet cradle 3112 is formed at the bottom of the filter cylinder 311 in the direction of the filter cylinder body cavity 3111, a filtered melt outlet cradle 3173 is formed at the peripheral edge of the upper part of the filtered melt outlet 317, the filtered melt outlet cradle 3173 is supported by the cylinder filtered melt outlet cradle 3112, and a cradle seal 31731 is provided between the filtered melt outlet cradle 3173 and the cylinder filtered melt outlet cradle 3112.
A housing fixing bolt hole 3174 is formed at the bottom of the filtered melt outlet 317 and around the filtered melt outlet 317 at intervals, and the housing fixing bolt hole 3174 is connected to the spinning device 33 disposed in the spinning device housing 34, that is, the spinning device 33 is fixedly connected thereto; an aluminum packing 31711 (shown in fig. 1) for sealing with the spinning device 33 is provided at the opening of the filtered melt outlet hole 3171 of the filtered melt outlet nozzle 317.
The metered first melt is introduced into the gland melt introduction hole 3121 by the metering pump melt introduction port 111 of the first metering pump i 11, filtered by the upper filter mesh 314, introduced into the filter medium 318, filtered as the aforementioned sea sand, filtered by the lower filter mesh 315, introduced into the melt accommodating chamber 3172 through the melt discharge disc through hole 3161 on the melt discharge disc 316, and introduced downward through the filtered melt discharge hole 3171 to the spinning device 33 to be described in detail later. Since the second melt metered by the second metering pump II 21 is guided to the spinning device 33 in the same manner as in the former, further description is omitted.
Referring to fig. 3, the spinning apparatus 33 includes a housing 331, a spinneret plate 332, a melt distribution plate 333, a melt guide plate 334, and a cover plate 335, the housing 331 is disposed in the spinning apparatus case 34, a spinneret plate support ring 33111 is formed at a lower portion of a housing chamber 3311 of the housing 331 and around the housing chamber 3311, housing fixing bolts 3312 are disposed at left and right ends of the housing 331 at intervals, cover plate fixing bolts 3313 are disposed at a periphery of the housing 331 at intervals, the filtered melt discharge nozzle 317 is fixedly connected to the housing fixing bolts 3312 through the housing fixing bolt holes 3174, the spinneret plate 332 is disposed in the housing chamber 3311, a peripheral edge portion of the spinneret plate 332 is supported on the spinneret plate support ring 33111, a spinneret hole group 3321 penetrating from an upper surface to a lower surface of the spinneret plate 332 is formed at intervals on the spinneret plate 332, the melt distribution plate 333 is stacked on the upward side of the spinneret 332 in the housing chamber 3311, a basin-shaped distribution plate melt left receiving chamber 3331 is formed at the left end of the upward side of the melt distribution plate 333, a left receiving chamber melt lead-out hole 3332 is formed in the distribution plate melt left receiving chamber 3331, a basin-shaped distribution plate melt right receiving chamber 3333 is formed at the left end of the upward side of the melt distribution plate 333, a right receiving chamber melt lead-out hole 3334 is formed in the distribution plate melt right receiving chamber 3333, a melt distribution groove group 3335 is formed at the bottom of the melt distribution plate 333, the melt distribution groove group 3335 communicates with the left receiving chamber melt lead-out hole 3332, the right receiving chamber melt lead-out hole 3334 and the above mentioned melt hole group 3321, the melt guide plate is stacked on the melt distribution plate 333 in the housing chamber 3311, and a melt guide plate left guide post 3341 is formed at the left end of the upward side of the melt guide plate 334, a left guide post 33411 is formed at the center of the left guide post 3341 of the melt guide plate, the left guide post 33411 corresponds to and communicates with the left receiving chamber 3331 of the distribution plate melt, a right guide post 3342 of the melt guide plate is formed at the right end of the upward side of the melt guide plate 334, a right guide post 33421 is formed at the center of the right guide post 3342 of the melt guide plate, the right guide post 33421 corresponds to and communicates with the right receiving chamber 3333 of the distribution plate melt, the cover plate 335 is disposed at the upward side of the melt guide plate 334 and the peripheral edge portion of the cover plate 335 is fitted to the upper surface of the housing 331, a left guide post receiving hole 3351 is formed at the left end of the cover plate 335, a right guide post receiving hole 3352 is formed at the right end of the cover plate 335, the left guide post receiving hole 3351 is fitted to the left guide post 3341 of the melt guide plate, and the right guide post receiving hole 3352 is fitted to the right guide post receiving hole 3342 of the melt guide plate, cover plate fixing bolt holes 3353 are formed at a position spaced apart from the peripheral edge of the cover plate 335, the cover plate fixing bolts 3313 are fixed to the cover plate fixing bolt holes 3353, and the case fixing bolts 3312 are screwed into the case fixing bolt holes 3174 after passing through bolt escape holes 3354 formed in the cover plate 335. Fig. 1 clearly shows the connection of the entire spinning device 33 to the first spinning melt filter device i 31 and the second spinning melt filter device ii 32 described above.
Referring to fig. 4 in combination with fig. 3, the left receiving cavity melt lead-out hole 3332 includes a pair of left receiving cavity outer side channel melt guide holes 33321 and a pair of left receiving cavity inner side channel melt guide holes 33322; the right receiving cavity melt leading-out hole 3334 comprises a pair of right receiving cavity outer side runner melt guide holes 33341 and a pair of right receiving cavity inner side runner melt guide holes 33342; the set 3335 includes a first annular channel I33351, a second annular channel II 33352, a third annular channel III 33353 and a fourth annular channel IV 33354, each of the first I33351, second II 33352, third III 33353 and fourth IV 33354 communicating from the left end to the right end of the bottom of the melt distribution plate 333 and with the set 3321 of orifices in the spinneret 332, the third III 33353 is located inside the first I33351 annular channel, the second II 33352 is located inside the third III 33353 annular channel, the fourth IV 33354 is located inside the second II 33352 annular channel, the pair of left catcher chamber outer side melt guide openings 33321 communicate with the first I33351, the pair of left catcher chamber inner side melt guide openings 33322 communicate with the second II 33352, the pair of right catcher chamber outer side melt guide openings 33341 communicate with the third III channel 33353, the pair of right receiving chamber inner side runner guide holes 33342 are communicated with the fourth annular channel IV 33354.
Continuing with FIGS. 3 and 4, the set of orifices 3321 includes a first orifice I33211, a second orifice II 33212 and a third orifice III 33213, the first annular channel I33351 and the third annular channel III 33353 collectively communicating with an upper portion of the first orifice I33211, the third annular channel III 33353 and the second annular channel II 33352 collectively communicating with an upper portion of the second orifice II 33212, and the second annular channel II 33352 and the fourth annular channel IV 33354 collectively communicating with an upper portion of the third orifice III 33213.
From the above description of fig. 3 and 4 it can be determined that: the melts guided by the pair of left receiving chamber outer side channel melt guiding holes 33321 and the pair of left receiving chamber inner side channel melt guiding holes 33322 are first melts, and the melts guided by the pair of right receiving chamber outer side channel melt guiding holes 33341 and the pair of right receiving chamber inner side channel melt guiding holes 33342 are second melts, wherein the first melt is from the first spinning melt filtering device i 31, and the second melt is from the second spinning melt filtering device ii 32.
In this embodiment, the structures of the upper filter screen 314 and the lower filter screen 315 are the same, and the upper filter screen 314 and the lower filter screen 315 are both stainless steel filter screens; the upper portions of the first spinneret hole i 33211, the second spinneret hole ii 33212, and the third spinneret hole iii 33213 are all oval in shape.
Since the whole spinning process is the same as the known technology, the description is not repeated.
In conclusion, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the invention task and truly realizes the technical effects of the applicant in the technical effect column.
Claims (10)
1. A two-component fiber spinning assembly comprises a first spinning box I (1), a second spinning box II (2) and a spinning mechanism (3), wherein a first metering pump I (11) used for receiving a first spinning melt which is extruded by a first screw extruder in a melting mode and is led in by a first melt pipeline and used as a first component is arranged in the first spinning box I (1), a second metering pump II (21) used for receiving a second spinning melt which is extruded by a second screw extruder in a melting mode and is led in by a second melt pipeline and used as a second component is arranged in the second spinning box II (2), the spinning mechanism (3) comprises a first melt filtering device I (31) and a spinning melt filtering device (3), wherein the first melt filtering device I (31) is arranged in the first spinning box I (1) and is matched with the first metering pump I (11) at a position corresponding to the lower portion of the first metering pump I (11) and used for receiving the first spinning melt led out by the first metering pump I (11), A second spinning melt filtering device II (32) and a spinning device (33) which are arranged in the second spinning beam II (2) and are connected with the second metering pump II (21) at the position corresponding to the lower part of the second metering pump II (21) for receiving the second spinning melt led out by the second metering pump II (21), characterized in that the spinning mechanism (3) further comprises a spinning device beam (34), the spinning device beam (34) is jointly corresponding to the lower parts of the first spinning beam I (1) and the second spinning beam II (2), the spinning device (33) is arranged in the spinning device beam (34), the lower parts of the first spinning melt filtering device I (31) and the second spinning melt filtering device II (32) are inserted into the spinning device beam (34), the left end of the spinning device (33) is connected with the first spinning melt filtering device I (31) and is received by the first spinning melt filtering device I (31) 31) And the right end of the spinning device (33) is matched and connected with a second spinning melt filtering device II (32) and receives the second spinning melt which is filtered by the second spinning melt filtering device and then is led out.
2. The bicomponent fiber spinning assembly according to claim 1, wherein the second spinning melt filter device II (32) arranged in the second spinning beam II (2) is of the same construction as the first spinning melt filter device I (31) arranged in the first spinning beam I (1), the first spinning melt filter device I (31) comprising a filter cylinder (311), a gland (312), a gland-defining ring nut (313), an upper filter screen (314), a lower filter screen (315), a melt discharge disk (316) and a filter melt discharge nozzle (317), the filter cylinder (311) being arranged in the first spinning beam I (1), the filter cylinder (311) having a filter cylinder chamber (3111), in the use state a filter medium (318) being arranged in the filter cylinder chamber (3111), the upper filter screen (314) being laid over the filter medium (318), a gland (312) is supported on the upper filter screen (314), a gland melt introducing hole (3121) which penetrates through the height direction of the gland (312) is arranged at the central position of the gland (312), the first melt from the first metering pump I (11) is introduced through the gland melt introducing hole (3121), a gland limiting ring nut (313) is sleeved outside the gland (312) and is in threaded fit with a gland limiting ring nut external thread on the outer wall of the gland limiting ring nut (313) and a filter cylinder inner wall thread formed on the inner wall of the filter cylinder body (311), the upper part of a filter melt guiding-out nozzle (317) is positioned at the lower part of the filter cylinder body cavity (3111) and is supported at the lower part of the filter cylinder body (311311), and the lower part of the filter melt guiding-out nozzle (317) extends outside the filter cylinder body cavity (3111) and is connected with the spinning device (33), a filtered melt outlet hole (3171) is formed in the center of the filtered melt outlet nozzle (317), the upper part of the filtered melt outlet hole (3171) is communicated with the filter cartridge body cavity (3111), the lower part is communicated with the spinning device (33) arranged in the spinning device box (34), a lower filter screen (315) is arranged between the lower part of the filter medium (318) and the upward side of the melt outlet disc (316), the melt outlet disc (316) is supported at the peripheral edge part of the upward side of the filtered melt outlet nozzle (317), and melt outlet disc through holes (3161) are formed in the melt outlet disc (316) at intervals.
3. The bicomponent fiber spinning pack according to claim 2, wherein the gland (312) is in the shape of a truncated cone and a metering pump melt outlet port coupling stack ring (3122) extends from an upper portion of the gland (312), a central region of the metering pump melt outlet port coupling stack ring (3122) communicates with the gland melt inlet hole (3121), and a metering pump melt outlet port coupling female screw thread (31221) is formed on an inner wall of the metering pump melt outlet port coupling stack ring (3122); a gland buffering sealing ring (3123) is arranged between the outer wall of the gland (312) and the lower part of the gland limiting ring nut (313); the first metering pump I (11) is provided with a metering pump melt leading-out interface (111), and the metering pump melt leading-out interface (111) extends into the metering pump melt leading-out interface matching stack ring (3122) and is matched and connected with the metering pump melt leading-out interface matching internal thread (31221).
4. The bicomponent fiber spinning pack according to claim 2, wherein a downward recessed trumpet-shaped melt receiving chamber (3172) is formed in a central region of an upward facing side of the filtered melt outlet nozzle (317), and the filtered melt outlet hole (3171) corresponds to a central position of a bottom of the melt receiving chamber (3172) and communicates with the melt receiving chamber (3172); the filter medium is sea sand, glass beads or carborundum.
5. The bicomponent fiber spinning pack according to claim 2, wherein a cartridge filter melt outlet nozzle holder support ring (3112) is formed at the bottom of the filter cartridge (311) in the direction of the filter cartridge body cavity (3111), a filter melt outlet nozzle holder (3173) is formed at the peripheral edge portion of the upper portion of the filter melt outlet nozzle (317), the filter melt outlet nozzle holder (3173) is supported on the cartridge filter melt outlet nozzle holder support ring (3112), and a holder seal (31731) is provided between the filter melt outlet nozzle holder (3173) and the cartridge filter melt outlet nozzle holder support ring (3112).
6. The bicomponent fiber spinning assembly according to claim 2, wherein housing fixing bolt holes (3174) are provided at the bottom of the filtering melt outlet nozzle (317) and around the circumference of the filtering melt outlet nozzle (317) at intervals, the housing fixing bolt holes (3174) being connected to the spinning device (33) disposed in the spinning device housing (34); an aluminum sealing gasket (31711) for sealing with the spinning device (33) is arranged at the opening position of the filtered melt outlet hole (3171) of the filtered melt outlet nozzle (317).
7. The bicomponent fiber spinning pack according to claim 6, wherein the spinning device (33) comprises a housing (331), a spinneret plate (332), a melt distribution plate (333), a melt guide plate (334), and a cover plate (335), the housing (331) is disposed in the spinning device case (34), a spinneret plate support ring (33111) is formed at a lower portion of a housing chamber (3311) of the housing (331) and around the housing chamber (3311), housing fixing bolts (3312) are provided at intervals at left and right ends of the housing (331), cover plate fixing bolts (3313) are provided at intervals around the housing (331), the filtered melt outlet nozzle (317) is fixedly connected to the housing fixing bolts (3312) through the housing fixing bolt holes (3174), the spinneret plate (332) is disposed in the housing chamber (3311), and the peripheral edge part of the spinneret plate (332) is supported on a spinneret plate supporting ring (33111), a spinneret hole group (3321) penetrating from the upper surface to the lower surface of the spinneret plate (332) is arranged on the spinneret plate (332) at intervals, a melt distribution plate (333) is superposed on the upward side of the spinneret plate (332) in the housing cavity (3311), a distribution plate melt left receiving cavity (3331) is formed at the left end of the upward side of the melt distribution plate (333), a left receiving cavity melt leading-out hole (3332) is arranged in the distribution plate melt left receiving cavity (3331), a distribution plate melt right receiving cavity (3333) is formed at the left end of the upward side of the melt distribution plate (333), a right receiving cavity melt leading-out hole (3334) is arranged in the distribution plate melt right receiving cavity (3333), a melt distribution groove group (3335) is arranged at the bottom of the melt distribution plate (333), the melt distribution groove set (3335) is communicated with the left receiving cavity melt outlet (3332), the right receiving cavity melt outlet (3334) and the spinneret hole set (3321), the melt guide plate (334) is superposed on the melt distribution plate (333) in the housing cavity (3311), and a left guide post (3341) of the melt guide plate is formed at the left end of the upward side of the melt guide plate (334), a left guide post guide hole (33411) is formed at the center position of the left guide post (3341) of the melt guide plate, the left guide post guide hole (33411) is corresponding to and communicated with the left receiving cavity (3331) of the distribution plate melt, a right guide post (3342) of the melt guide plate is formed at the right end of the upward side of the melt guide plate (334), a right guide post guide hole (33421) is formed at the center position of the right guide post guide (3342) of the melt guide plate, and the right guide post guide hole (33421) is corresponding to and communicated with the right receiving cavity (3333) of the melt guide plate, a cover plate (335) is provided on the side of the melt guide plate (334) facing upward and the peripheral edge portion of the cover plate (335) is fitted to the upper surface of the case (331), a left material guiding column sleeve hole (3351) is arranged at the left end of the cover plate (335), a right material guiding column sleeve hole (3352) is arranged at the right end of the cover plate (335), the left material guiding column sleeve hole (3351) is sleeved on the left material guiding column (3341) of the melt guiding plate, the right guide post sleeve hole (3352) is sleeved on the right guide post (3342) of the melt guide plate, cover plate fixing bolt holes (3353) are arranged at the peripheral edge of the cover plate (335) at intervals, the cover plate fixing bolt (3313) is fixed with the cover plate fixing bolt hole (3353), and the shell fixed connecting bolt (3312) passes through a bolt abdicating hole (3354) formed in the cover plate (335) and then is screwed into the shell fixed connecting bolt hole (3174).
8. The bicomponent fiber spinning assembly of claim 7, wherein said left receiving chamber melt outlet port (3332) comprises a pair of left receiving chamber outside channel melt guiding holes (33321) and a pair of left receiving chamber inside channel melt guiding holes (33322); the right receiving cavity melt leading-out hole (3334) comprises a pair of right receiving cavity outer side runner melt guide holes (33341) and a pair of right receiving cavity inner side runner melt guide holes (33342); said set of melt distribution channels (3335) comprising a first annular channel I (33351), a second annular channel II (33352), a third annular channel III (33353) and a fourth annular channel IV (33354), said first annular channel I (33351), said second annular channel II (33352), said third annular channel III (33353) and said fourth annular channel IV (33354) each communicating from a left end to a right end of the bottom of said melt distribution plate (333) and with said set of spinneret orifices (3321) on said spinneret plate (332), said third annular channel III (33353) being located inside said first annular channel I (33351), said second annular channel II (33352) being located inside said third annular channel III (33353), said fourth annular channel IV (33354) being located inside said second annular channel II (33352), said pair of left catcher chamber outside melt feed channel guide bores (33321) communicating with said first annular channel I (33351), the pair of left receiving cavity inner side runner melt guide holes (33322) are communicated with a second annular channel II (33352), the pair of right receiving cavity outer side runner melt guide holes (33341) are communicated with a third annular channel III (33353), and the pair of right receiving cavity inner side runner melt guide holes (33342) are communicated with a fourth annular channel IV (33354); the spinneret orifice group (3321) comprises a first spinneret orifice I (33211), a second spinneret orifice II (33212) and a third spinneret orifice III (33213), wherein the first annular channel I (33351) and the third annular channel III (33353) are jointly communicated with the upper part of the first spinneret orifice I (33211), the third annular channel III (33353) and the second annular channel II (33352) are jointly communicated with the upper part of the second spinneret orifice II (33212), and the second annular channel II (33352) and the fourth annular channel IV (33354) are jointly communicated with the upper part of the third spinneret orifice III (33213).
9. The bicomponent fiber spinning assembly of claim 2, wherein the upper filter (314) and the lower filter (315) are identical in structure, and the upper filter (314) and the lower filter (315) are both stainless steel filters.
10. The bicomponent fiber spinning pack of claim 8, wherein the upper portions of said first orifice i (33211), second orifice ii (33212), and third orifice iii (33213) are all oval in shape.
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