CN204509526U - The spray silk structure of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber - Google Patents
The spray silk structure of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber Download PDFInfo
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- CN204509526U CN204509526U CN201520058378.7U CN201520058378U CN204509526U CN 204509526 U CN204509526 U CN 204509526U CN 201520058378 U CN201520058378 U CN 201520058378U CN 204509526 U CN204509526 U CN 204509526U
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Abstract
The spray silk structure of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber, comprise all uncovered cylinder in top and bottom, the lower Sha Beihe being provided with collar plate shape in cylinder is positioned at the spinnerets below lower husky cup, cylinder lower end inner wall is provided with spacing ring, is provided with seal washer between spacing ring and spinnerets lower end.The utility model is reasonable in design, and structure is unique, and spinning efficiency is high, and filter area is large, not easily produces eddy current, and not easily break during spray silk, all parts quality of fit is high, and operating pressure is stablized, and easy accessibility, improves melt quality, facilitates spinning and produces.
Description
Technical field
The utility model belongs to chemical fibre spinning technical field, is specifically related to the spray silk structure of the two spray orifice parallel type filament spinning component of a kind of PLA bi-component composite fiber.
Background technology
Chemical fibre spinning comprises the preparation of spinning melt or solution, fibre forming and winding and last handling process.Last handling process then has the stretching of as-spun fibre, heat setting to series of processes such as finished product packings.
Existing spinning process has melt spinning and solution-polymerized SBR two class.Usually the fibre-forming polymer not occurring in the molten state significantly to decompose adopts melt spinning, such as polyester fiber, polyamide fiber etc.Melt spinning process is simple, and spinning speed is high.The fibre-forming polymer that solution spinning will decompose when being applicable to melting, dissolves the spinning solution of obtained thickness in a solvent, then carries out spinning by fibre-forming polymer.By the solidification mode of the spinning solution thread extruded from capillary spinneret orifice, solution-polymerized SBR is divided into again wet spinning and dry spinning two kinds.It is lower that solution-polymerized SBR spins speed, especially wet spinning.For improving spinning capability, the spinning head that hole count is a lot of need be adopted.Spinning of dry spinning is fast higher than wet spinning, but far below melt spinning.
The filament spinning component that existing PLA bi-component composite fiber adopts also exists following defect or deficiency: 1, filter area is little, affects spinning operating efficiency; 2, cross the part corner angle such as filter sand cup clearly demarcated, polylactic acid melt easily produces vortex phenomenon in flow process; 3, because polylactic acid melt viscosity is large, the stress fluctuation of melt is comparatively large, and melt easily breaks at capillary spinneret orifice place; 4, each parts are located not too accurate mutually, and quality of fit difference causes operating pressure unstable, and dismounting is also not too convenient.
Utility model content
The utility model, in order to solve weak point of the prior art, not easily breaks when providing a kind of filter area greatly, not easily to produce eddy current, spray silk, all parts quality of fit is high, operating pressure is stablized, the spray silk structure of the PLA bi-component composite fiber of easy accessibility pair spray orifice parallel type filament spinning component.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the spray silk structure of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber, comprise all uncovered cylinder in top and bottom, the lower Sha Beihe being provided with collar plate shape in cylinder is positioned at the spinnerets below lower husky cup, cylinder lower end inner wall is provided with spacing ring, is provided with seal washer between spacing ring and spinnerets lower end;
Lower husky cup inner bottom part is provided with first time screen pack, and lower husky cup top is provided with second time screen pack, is loaded with to descend filter sand in lower husky cup between first time screen pack and second time screen pack, be provided with low groove bottom lower husky cup, the base plate of lower husky cup is provided with the lower dispensing orifice for being communicated with low groove and first time screen pack, and the wall of cup of lower husky cup is provided with vertical channel penetrating up and down, spinnerets upper surface is along the circumferential direction provided with inner conical groove and the male-tapered groove of annular, inner conical groove upper end is communicated with the low groove bottom lower husky cup, male-tapered groove upper end is communicated with vertical channel lower end, the cross section of inner conical groove and male-tapered groove is up big and down small structure, an inner conical groove is corresponding adjacent with a male-tapered groove, spinnerets is circumferentially evenly provided with several the same number of interior capillary spinneret orifice and outer capillary spinneret orifice, interior capillary spinneret orifice and outer capillary spinneret orifice are all obliquely installed, interior capillary spinneret orifice upper end is communicated with inner conical trench bottom, outer capillary spinneret orifice upper end is communicated with male-tapered trench bottom, adjacent interior capillary spinneret orifice and outer capillary spinneret orifice are 0.3mm in the beeline of spinnerets lower surface, the center line of adjacent interior capillary spinneret orifice and the center line of outer capillary spinneret orifice intersect at below spinnerets.
Described vertical channel, interior capillary spinneret orifice and outer capillary spinneret orifice are up big and down small conical structure.
Adopt technique scheme, the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber also comprises the clamp nut be located at successively in cylinder, melt distribution plate, upper husky cup and feed distribution plate from top to bottom, feed distribution plate is positioned at lower Sha Beishang, and clamp nut is threaded with cylinder upper inside wall;
Melt distribution plate is respectively equipped with PLA component A charging aperture and PLA B component charging aperture, PLA component A charging aperture lower end is communicated with upper husky cup, upper husky cup inner bottom part is provided with screen pack on first, upper husky cup top is provided with screen pack on second, PLA B component charging aperture is positioned at melt distribution plate center, PLA B component charging aperture lower end be connected with downwards successively through upper husky cup, upper screen pack and feed distribution plate tube connector, tube connector lower end to be positioned at above second time screen pack and to be communicated with lower husky cup; The upper filter sand excessively on first on screen pack and second between screen pack is loaded with in upper husky cup; The base plate of upper husky cup is provided with dispensing orifice, and be provided with upper groove between upper husky cup bottom surface and feed distribution plate upper surface, the vertical channel on the wall of cup of lower husky cup is upward through feed distribution plate, and vertical channel upper end is communicated with upper groove.
Described melt distribution plate is respectively equipped with T-shaped aluminum sealing ring at PLA component A charging aperture and PLA B component charging aperture place, melt distribution plate upper end outward flange is up-small and down-big conical structure, cannelure is formed between this conical structure and cylinder inwall, be provided with O type aluminum sealing ring in cannelure, clamp nut lower end compresses melt distribution plate by O type aluminum sealing ring.
The edges and corners of described husky cup and lower husky cup are arc transition structure.
Described tube connector and feed distribution plate are structure as a whole.
Located by horizontally disposed straight pin between described feed distribution plate and lower husky cup.
The specific works process of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber is as follows:
A, B two kinds of melts enter filament spinning component respectively by the PLA component A charging aperture and PLA B component charging aperture that T-shaped aluminum sealing ring is housed.A melt first on second the filtration of screen pack enter into upper mistake in the middle of filter sand, the essence filter of screen pack in upper filtration and first of crossing filter sand again in upper husky cup, flow in upper groove from the upper dispensing orifice bottom upper husky cup, vertical channel under warp in husky cup enters in male-tapered groove downwards, finally by the outer capillary spinneret orifice ejection on spinnerets, form the outer most circular portion of single fiber.
B melt first enters on second time screen pack through tube connector, through the filtration of second time screen pack, entered in the middle of filter sand, the descended filtration of filter sand and the essence of first time screen pack again in lower husky cup are filtered, flow in low groove from the lower dispensing orifice bottom lower husky cup, B melt enters into downwards in inner conical groove again, finally by capillary spinneret orifice ejection on spinnerets, forms the interior most circular portion of single fiber.
A, B two parts melt is when spraying from spinnerets, due to the bulking effect that injection direction intersects below spinnerets and melt is extruded from capillary spinneret orifice of interior capillary spinneret orifice and outer capillary spinneret orifice, two kinds of melts are just being sticked together after spinnerets ejection.
The two spray orifice parallel type filament spinning component of PLA bi-component composite fiber, owing to adopting the husky cup of Dual-layer structured filter, fully increases filter area, improves filter effect, and improve filter efficiency.
The parts such as the upper husky cup in the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber and lower husky cup have employed designed arc-shaped appearance; The position of fluid process all adopts arc-shaped edges to design, and reduces the generation of eddy current in bath movement process.
Outer capillary spinneret orifice in the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber and interior capillary spinneret orifice all have employed up big and down small conical structure; The feature large according to polylactic acid melt viscosity, melt stress fluctuation can be reduced like this, prevent melt fracture, the dry trend of ribbon can be made evenly, have employed taper capillary spinneret orifice design (the aperture draw ratio of capillary spinneret orifice outlet is reduced to below 1:1, is as the criterion with the precision of satisfied outlet circular hole and technological requirement).
Feed distribution plate in the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber and the location between lower husky cup adopt and coordinate flat circle pin location fit, and be characterized in accurate positioning, disassembly and assembly are convenient.Compress as long as the half round cut of upper component is aimed at straight pin by half round cut again that during assembling, straight pin is placed on mating surface lower plane.
Because melt has flowed in the male-tapered groove of spinnerets from the vertical channel of lower husky cup periphery, this spinnerets is without the need to allowing the male-tapered groove of lower husky cup periphery vertical channel centering spinnerets, namely hole is to hole feeding, therefore, between this spinnerets and lower husky cup does not need alignment pin to locate.
Vertical channel in the utility model outside lower husky cup periphery adopts up big and down small conical bore form, and quality of fit more easily ensures, melt pressure is more stable.
By the polylactic acid melt of A, B two kinds of different molecular weights and two kinds of different components by two overlapping independently melting, a kind of bicomponent fibers that metering, melt delivery system will be extruded, be spun in the capillary spinneret orifice of spinnerets in two kinds of melt Conveying to the utility model.After this fibrid is stretched, the stretching due to bi-material is shunk physical property difference, is drawn high the textured fibre that rear different shrinkage factor can make a kind of three-dimensional crimp shape of processbearing astrocyte.The viscosity of polylactic acid melt is comparatively large, needs larger filter area, and the utility model is a kind of for high-viscosity melt custom-designed stack-type component filters parts.
In sum, the two spray orifice parallel type spin pack design of PLA bi-component composite fiber is reasonable, and structure is unique, and spinning efficiency is high, filter area is large, not easily produce eddy current, not easily break during spray silk, all parts quality of fit is high, operating pressure is stablized, easy accessibility, improves melt quality, facilitates spinning and produces.
Accompanying drawing explanation
Fig. 1 is the structural representation of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber;
Fig. 2 is the enlarged drawing of spinnerets in Fig. 1;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the sectional schematic diagram of the composite fibre adopting the two spray orifice parallel type filament spinning component spinning moulding of PLA bi-component composite fiber.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber, comprise all uncovered cylinder 1 in top and bottom, cylinder 1 inside is provided with clamp nut 2, melt distribution plate 3, upper husky cup 4, feed distribution plate 5, lower husky cup 6 and spinnerets 7 from top to bottom successively, cylinder 1 lower end inner wall is provided with spacing ring 8, be provided with seal washer 9 between spacing ring 8 and spinnerets 7 lower end, clamp nut 2 is threaded with cylinder 1 upper inside wall.
Melt distribution plate 3 is respectively equipped with PLA component A charging aperture 10 and PLA B component charging aperture 11, PLA component A charging aperture 10 lower end is communicated with upper husky cup 4, upper husky cup 4 inner bottom part is provided with screen pack 12 on first, upper husky cup 4 top is provided with screen pack 13 on second, PLA B component charging aperture 11 is positioned at melt distribution plate 3 center, PLA B component charging aperture 11 lower end is connected with downwards successively through upper husky cup 4, upper screen pack and feed distribution plate 5 tube connector 14, lower husky cup 6 inner bottom part is provided with first time screen pack 15, lower husky cup 6 top is provided with second time screen pack 16, tube connector 14 lower end to be positioned at above second time screen pack and to be communicated with lower husky cup 6, to be loaded with on first screen pack 12 and second between screen pack 13 in upper husky cup 4 upper crosses filter sand 17, is loaded with to descend filter sand 18 in lower husky cup 6 between first time screen pack 15 and second time screen pack 16.
Low groove 19 is provided with bottom lower husky cup 6, the base plate of upper husky cup 4 is provided with dispensing orifice 20, the base plate of lower husky cup 6 is provided with the lower dispensing orifice 21 for being communicated with low groove 19 and first time screen pack 15, upper groove 22 is provided with between upper husky cup 4 bottom surface and feed distribution plate 5 upper surface, wall of cup and feed distribution plate 5 correspondence of lower husky cup 6 are provided with vertical channel 23 penetrating up and down, and vertical channel 23 upper end is communicated with upper groove 22, spinnerets 7 upper surface is along the circumferential direction provided with inner conical groove 24 and the male-tapered groove 25 of annular, inner conical groove 24 upper end is communicated with the low groove 19 bottom lower husky cup 6, male-tapered groove 25 upper end is communicated with vertical channel 23 lower end, the cross section of inner conical groove 24 and male-tapered groove 25 is up big and down small structure, an inner conical groove 24 is corresponding adjacent with a male-tapered groove 25, spinnerets 7 is circumferentially evenly provided with several the same number of interior capillary spinneret orifice 26 and outer capillary spinneret orifice 27, interior capillary spinneret orifice 26 and outer capillary spinneret orifice 27 are all obliquely installed, interior capillary spinneret orifice 26 upper end is communicated with bottom inner conical groove 24, outer capillary spinneret orifice 27 upper end is communicated with bottom male-tapered groove 25, adjacent interior capillary spinneret orifice 26 and outer capillary spinneret orifice 27 are 0.3mm in the beeline of spinnerets 7 lower surface, the center line of adjacent interior capillary spinneret orifice 26 and the center line of outer capillary spinneret orifice 27 intersect at below spinnerets 7.
Melt distribution plate 3 is respectively equipped with T-shaped aluminum sealing ring 28 at PLA component A charging aperture 10 and PLA B component charging aperture 11 place, melt distribution plate 3 upper end outward flange is up-small and down-big conical structure, cannelure 29 is formed between this conical structure and cylinder 1 inwall, be provided with O type aluminum sealing ring 30 in cannelure 29, clamp nut 2 lower end compresses melt distribution plate 3 by O type aluminum sealing ring 30.
The edges and corners of upper husky cup 4 and lower husky cup 6 are arc transition structure.
Vertical channel 23, interior capillary spinneret orifice 26 and outer capillary spinneret orifice 27 are up big and down small conical structure.
Tube connector 14 and feed distribution plate 5 are structure as a whole.
Located by horizontally disposed straight pin 31 between feed distribution plate 5 and lower husky cup 6.
Specific works process of the present invention is as follows:
A, B two kinds of melts enter filament spinning component respectively by the PLA component A charging aperture 10 and PLA B component charging aperture 11 that T-shaped aluminum sealing ring 28 is housed.A melt first on second the filtration of screen pack 13 enter into upper mistake in the middle of filter sand 17, the essence filter of screen pack 12 in upper filtration and first of crossing filter sand 17 again in upper husky cup 4, flow in upper groove 22 from the upper dispensing orifice 20 bottom upper husky cup 4, vertical channel 23 under warp in husky cup 6 enters in male-tapered groove 25 downwards, spray finally by the outer capillary spinneret orifice 27 on spinnerets 7, form the outer most circular portion of single fiber.
B melt first enters on second time screen pack 16 through tube connector 14, through the filtration of second time screen pack 16, entered in the middle of filter sand 18, the descended filtration of filter sand 18 and the essence of first time screen pack 15 again in lower husky cup 6 are filtered, flow in low groove 19 from the lower dispensing orifice 21 bottom lower husky cup 6, B melt enters into downwards in inner conical groove 24 again, sprays finally by capillary spinneret orifice 26 on spinnerets 7, forms the interior most circular portion of single fiber.
A, B two parts melt is when spraying from spinnerets 7, due to the bulking effect that injection direction intersects below spinnerets 7 and melt is extruded from capillary spinneret orifice of interior capillary spinneret orifice 26 and outer capillary spinneret orifice 27, two kinds of melts are just sticked together after spraying from spinnerets 7.
The present invention, owing to adopting the husky cup of Dual-layer structured filter, fully increases filter area, improves filter effect, and improves filter efficiency.
The parts such as the upper husky cup 4 in the present invention and lower husky cup 6 have employed designed arc-shaped appearance; The position of fluid process all adopts arc-shaped edges to design, and reduces the generation of eddy current in bath movement process.
Outer capillary spinneret orifice 27 in the present invention and interior capillary spinneret orifice 26 all have employed up big and down small conical structure; The feature large according to polylactic acid melt viscosity, melt stress fluctuation can be reduced like this, prevent melt fracture, make the dry trend of ribbon evenly, have employed taper capillary spinneret orifice design (the aperture draw ratio of capillary spinneret orifice outlet is reduced to below 1:1, is as the criterion with the precision of satisfied outlet circular hole and technological requirement).
Feed distribution plate 5 in the present invention adopts with the location between lower husky cup 6 and coordinates flat circle pin 31 location fit, is characterized in accurate positioning, and disassembly and assembly are convenient.Compress as long as the half round cut of upper component is aimed at straight pin 31 by half round cut again that during assembling, straight pin 31 is placed on mating surface lower plane.
Because melt has flowed in the male-tapered groove 25 of spinnerets 7 from the vertical channel 23 of lower husky cup 6 periphery, this spinnerets 7 is without the need to allowing the male-tapered groove 25 of lower husky cup 6 periphery vertical channel 23 centering spinnerets 7, namely hole is to hole feeding, therefore, between this spinnerets 7 and lower husky cup 6 does not need alignment pin to locate.
Vertical channel 23 in the present invention outside lower husky cup 6 periphery adopts up big and down small conical bore form, and quality of fit more easily ensures, melt pressure is more stable.
By the polylactic acid melt of A, B two kinds of different molecular weights and two kinds of different components by two overlapping independently melting, a kind of bicomponent fibers that metering, melt delivery system will be extruded, be spun in the capillary spinneret orifice of spinnerets 7 in two kinds of melt Conveying to the present invention.After this fibrid is stretched, the stretching due to bi-material is shunk physical property difference, is drawn high the textured fibre that rear different shrinkage factor can make a kind of three-dimensional crimp shape of processbearing astrocyte.The viscosity of polylactic acid melt is comparatively large, needs larger filter area, and the present invention is a kind of for high-viscosity melt custom-designed stack-type component filters parts.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (2)
1. the spray silk structure of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber, it is characterized in that: comprise all uncovered cylinder in top and bottom, the lower Sha Beihe being provided with collar plate shape in cylinder is positioned at the spinnerets below lower husky cup, cylinder lower end inner wall is provided with spacing ring, is provided with seal washer between spacing ring and spinnerets lower end;
Lower husky cup inner bottom part is provided with first time screen pack, and lower husky cup top is provided with second time screen pack, is loaded with to descend filter sand in lower husky cup between first time screen pack and second time screen pack, be provided with low groove bottom lower husky cup, the base plate of lower husky cup is provided with the lower dispensing orifice for being communicated with low groove and first time screen pack, and the wall of cup of lower husky cup is provided with vertical channel penetrating up and down, spinnerets upper surface is along the circumferential direction provided with inner conical groove and the male-tapered groove of annular, inner conical groove upper end is communicated with the low groove bottom lower husky cup, male-tapered groove upper end is communicated with vertical channel lower end, the cross section of inner conical groove and male-tapered groove is up big and down small structure, an inner conical groove is corresponding adjacent with a male-tapered groove, spinnerets is circumferentially evenly provided with several the same number of interior capillary spinneret orifice and outer capillary spinneret orifice, interior capillary spinneret orifice and outer capillary spinneret orifice are all obliquely installed, interior capillary spinneret orifice upper end is communicated with inner conical trench bottom, outer capillary spinneret orifice upper end is communicated with male-tapered trench bottom, adjacent interior capillary spinneret orifice and outer capillary spinneret orifice are 0.3mm in the beeline of spinnerets lower surface, the center line of adjacent interior capillary spinneret orifice and the center line of outer capillary spinneret orifice intersect at below spinnerets.
2. the spray silk structure of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber according to claim 1, is characterized in that: described vertical channel, interior capillary spinneret orifice and outer capillary spinneret orifice are up big and down small conical structure.
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| CN201520058378.7U CN204509526U (en) | 2015-01-28 | 2015-01-28 | The spray silk structure of the two spray orifice parallel type filament spinning component of PLA bi-component composite fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107531442A (en) * | 2015-05-29 | 2018-01-02 | 东丽株式会社 | By the meristogenetic cylindric package body of poly lactic acid series |
| CN107938003A (en) * | 2017-11-10 | 2018-04-20 | 南通华盛高聚物科技股份有限公司 | For the spinneret and spinning process in parallel composite fiber new material technology |
| CN108130606A (en) * | 2017-11-10 | 2018-06-08 | 南通华盛高聚物科技股份有限公司 | A kind of preparation method of polylactic acid parallel composite fiber |
| CN111155180A (en) * | 2020-01-14 | 2020-05-15 | 北京服装学院 | Polylactic acid parallel composite fiber and preparation method thereof |
-
2015
- 2015-01-28 CN CN201520058378.7U patent/CN204509526U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107531442A (en) * | 2015-05-29 | 2018-01-02 | 东丽株式会社 | By the meristogenetic cylindric package body of poly lactic acid series |
| CN107938003A (en) * | 2017-11-10 | 2018-04-20 | 南通华盛高聚物科技股份有限公司 | For the spinneret and spinning process in parallel composite fiber new material technology |
| CN108130606A (en) * | 2017-11-10 | 2018-06-08 | 南通华盛高聚物科技股份有限公司 | A kind of preparation method of polylactic acid parallel composite fiber |
| CN107938003B (en) * | 2017-11-10 | 2019-08-09 | 南通华盛高聚物科技股份有限公司 | For the spinneret and spinning process in parallel composite fiber new material technology |
| CN108130606B (en) * | 2017-11-10 | 2019-08-09 | 南通华盛高聚物科技股份有限公司 | A kind of preparation method of polylactic acid parallel composite fiber |
| CN111155180A (en) * | 2020-01-14 | 2020-05-15 | 北京服装学院 | Polylactic acid parallel composite fiber and preparation method thereof |
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