CN218812385U

CN218812385U - Multifunctional filament spinning drafting and winding combination machine for polyester fine denier industry

Info

Publication number: CN218812385U
Application number: CN202222506557.5U
Authority: CN
Inventors: 满晓东; 徐凯; 毛育博; 李雅迪; 任玉国; 侯伯; 毛绪欣; 李惊涛; 刘凯亮; 董文涛; 李晓磊; 王志强; 刘鹏
Original assignee: Beijing Chonglee Machinery Engineering Co Ltd
Current assignee: Beijing Chonglee Machinery Engineering Co Ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-04-07
Anticipated expiration: 2032-09-21

Abstract

The utility model discloses a long filament spinning draft winding combination machine for multi-functional polyester fine denier industry relates to spinning production technical field, has solved spinning equipment and can not all be used for the technical problem of PET, PBT, PTT fine denier industry with long filament production. The drawing and winding device comprises a spinning device and a drawing and winding device arranged in parallel with the spinning device, wherein the drawing and winding device comprises an oiling mechanism, a pre-interlacer, a feeding roller, a yarn dividing roller, a first pair of low-temperature hot rollers, a second pair of high-temperature drawing hot rollers, a third pair of high-temperature drawing hot rollers, a fourth pair of drawing and shaping hot rollers, a fifth pair of drawing and shaping hot rollers, a guide disc, a final interlacer and a winding head which are sequentially arranged according to a production process, and the spinning device conveys any one of PET (polyethylene terephthalate) tows, PBT (polybutylene terephthalate) tows and PTT (polytrimethylene terephthalate) tows to the oiling mechanism. The filament bundles are subjected to retraction setting of the fourth pair and the fifth pair, and the temperature of the filament bundles is gradually increased by arranging enough hot rollers, so that the gradual orientation and crystallization of fibers are facilitated, and the mechanical properties of different filaments for the polyester fine denier industry are achieved.

Description

Multifunctional filament spinning, drafting and winding combination machine for polyester fine denier industry

Technical Field

The utility model relates to a spinning production technical field especially relates to a long filament spinning drafting and winding combination machine for multi-functional polyester fine denier industry.

Background

The polyester fiber includes polyethylene terephthalate (PET) fiber, polybutylene terephthalate (PBT) fiber, and polytrimethylene terephthalate (PTT) fiber, which are respectively spun into filaments by different production apparatuses. With the continuous enlargement of the scale of the polyester fine denier capacity, manufacturers need to configure different devices, and have the defects of increasingly large production line, wider occupied area and the like, which finally affects the production cost, weakens the competitive power, hinders the high-speed development of the polyester fine denier industrial yarn, and needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The application provides a multi-functional polyester fine denier industry is with long filament spinning drafting winding combine, has solved the technical problem that spinning equipment can not all be used for PET, PBT, PTT fine denier industry with long filament production among the correlation technique.

The application provides a multi-functional fine denier polyester is filament spinning draft winding combine for industry, including spinning equipment and the draft take-up device with spinning equipment parallel arrangement, the draft take-up device is including the oiling machine who sets gradually according to production technology, the interlacer in advance, feeding roller and branch silk roller, first pair of low temperature hot-rolling, the second pair of high temperature draft hot-rolling, the third pair of high temperature draft hot-rolling, the fourth pair of draft design hot-rolling, the fifth pair of draft design hot-rolling, the direction guide dish, net ware and winding head end, spinning equipment is used for producing in the PET silk bundle, the PBT silk bundle, arbitrary kind in the PTT silk bundle, and convey the silk bundle to the oiling machine and construct.

Optionally, the speed of the feeding roller and the dividing roller is 550-650m/min; the temperature of the first pair of low-temperature hot rollers is set to be 65-90 ℃, the speed is 577-683m/min, and the first pair of low-temperature hot rollers, the feeding roller and the filament separating roller are kept at a speed of 1.05: a speed ratio of 1; the temperature of the second pair of high-temperature drafting hot rollers is set to be 130-160 ℃, the speed is 1443-2390m/min, and the drafting multiple of the second pair of high-temperature drafting hot rollers and the first pair of low-temperature hot rollers is 2.5-3.5 times; the temperature of the third pair of high-temperature drafting hot rollers is set to be 140-220 ℃, the spinning speed is 2900-4200m/min, and the drafting multiple of the third pair of high-temperature drafting hot rollers and the second pair of high-temperature drafting hot rollers is 1.2-2.5 times; the temperature of the fourth pair of drafting and shaping hot rollers is set to be 160-240 ℃, the spinning speed is 2800-3900m/min, and the drafting multiple of the fourth pair of drafting and shaping hot rollers and the third pair of high-temperature drafting hot rollers is 0.92-0.98 times; the temperature of the fifth pair of drafting and shaping hot rollers is set to be 200-250 ℃, the spinning speed is 2750-3800m/min, and the drafting multiple of the fifth pair of drafting and shaping hot rollers and the fourth pair of drafting and shaping hot rollers is 0.92-0.98 times.

Optionally, when the filament bundle formed by the PET slice in the spinning device enters the oiling mechanism, the speed of the feeding roller and the filament separating roller is 580m/min, the temperature of the first pair of low-temperature hot rollers is 80 ℃ and the speed is 609m/min, the temperature of the second pair of high-temperature drafting hot rollers is 140 ℃ and the speed is 1827m/min, the temperature of the third pair of high-temperature drafting hot rollers is 220 ℃ and the spinning speed is 3654m/min, the temperature of the fourth pair of drafting shaping hot rollers is 240 ℃ and the spinning speed is 3581m/min, and the temperature of the fifth pair of drafting shaping hot rollers is 240 ℃ and the spinning speed is 3502m/min.

Optionally, when the filament bundle formed by the PBT slice in the spinning device enters the oiling mechanism, the speed of the feeding roller and the filament separating roller is 570m/min, the temperature of the first pair of low-temperature hot rollers is 85 ℃ and the speed is 599m/min, the temperature of the second pair of high-temperature drawing hot rollers is 145 ℃ and the speed is 1736m/min, the temperature of the third pair of high-temperature drawing hot rollers is 220 ℃ and the spinning speed is 3472m/min, the temperature of the fourth pair of drawing shaping hot rollers is 235 ℃ and the spinning speed is 3367m/min, and the temperature of the fifth pair of drawing shaping hot rollers is 240 ℃ and the spinning speed is 3232m/min.

Optionally, when the filament bundle formed by the PTT chips in the spinning device enters the oiling mechanism, the speeds of the feeding roller and the filament separating roller are 565m/min, the temperature of the first pair of low-temperature hot rollers is 75 ℃ and is 594m/min, the temperature of the second pair of high-temperature drafting hot rollers is 135 ℃ and is 1839m/min, the temperature of the third pair of high-temperature drafting hot rollers is 225 ℃ and is at the spinning speed of 3678m/min, the temperature of the fourth pair of drafting shaping hot rollers is 230 ℃ and is at the spinning speed of 3531m/min, and the temperature of the fifth pair of drafting shaping hot rollers is 235 ℃ and is at the spinning speed of 3460m/min.

Optionally, the draft winding device further comprises:

the first godet wheel and the second godet wheel are respectively arranged in front of and behind the pre-interlacer according to the tow paths;

the first yarn guide is arranged between the oiling mechanism and the spinning device according to a yarn bundle path;

the second yarn guide is arranged among the second yarn guide wheel, the feeding roller and the yarn dividing roller according to a yarn bundle path;

the third yarn guide is arranged among the feeding roller, the yarn dividing roller and the first pair of low-temperature hot rollers according to a yarn bundle path; and

and the fourth yarn guide is arranged between the guide disc and the final yarn guide according to the yarn bundle path.

Optionally, the spinning device comprises a screw extruder, a screw of the screw extruder comprises a feeding section, a compression section and a metering section which are connected in sequence, the metering section comprises a first metering section, a second metering section, a third metering section and a conical torpedo head which are connected in sequence, the first metering section is connected with the compression section, a plurality of straight grooves are formed in the bottoms of the screw grooves of the first metering section, the length direction of the straight grooves is the same as the axial direction of the screw, the second metering section is arranged in an equidistant thread mode, and diamond blocks are uniformly arranged on the periphery of the third metering section to form splines.

Optionally, the spinning device comprises a spinning box, the horizontal section of the spinning box comprises a transverse center line along the length direction and a longitudinal center line perpendicular to the transverse center line, the spinning box comprises two rows of spinning assemblies, the two rows have the same arrangement direction, the transverse center line direction and the axial direction of a hot roller in a drawing and winding device configured by the spinning box are all parallel, the two rows are formed with a stacking direction parallel to the longitudinal center line direction, the spinning assemblies in the two rows are arranged in a staggered mode in the transverse center line direction, and the distance between every two adjacent spinning assemblies in one row is not smaller than the outer diameter of the spinning assemblies.

Optionally, the spinning device further comprises a spinning assembly, the spinning assembly comprises an assembly body, a gland, a melt distributor and a spinneret plate, the gland, the melt distributor and the spinneret plate are sequentially arranged in the inner channel of the assembly body along the flow direction of the melt, a distribution plate is arranged at the tail end of the inner channel of the melt distributor, the gland is provided with at least two feed inlets which are mutually parallel, the melt distributor forms at least one inner channel, one end of the inner channel is communicated with the feed inlets, and the other end of the inner channel is communicated with the distribution plate.

Optionally, the spinning device comprises a screw extruder, a spinning box, a spinning assembly, a slow cooling device, a slow cooling air device, a circular air cooling device and a channel which are sequentially arranged according to a production process, wherein the slow cooling air device comprises a hot air box body and a hot air inlet pipeline, the top of the hot air box body is communicated with the slow cooling device, the bottom of the hot air box body is communicated with the circular air cooling device, one end of the hot air inlet pipeline is communicated with the hot air box body at the side part of the hot air box body, and the other end of the hot air inlet pipeline is used for introducing hot air.

The beneficial effects of this application are as follows: the utility model provides a multifunctional filament spinning drafting and winding combination machine for polyester fine denier industry, which comprises a spinning device and a drafting and winding device arranged in parallel with the spinning device; in the prior art, the PET, PBT and PTT filaments are produced by three spinning devices, and in consideration that the elasticity limit of the PBT and PTT filaments is larger than that of the PET filaments, the drawing and winding device comprises an oiling mechanism, a pre-interlacer, a feeding roller, a splitting roller, a first pair of low-temperature hot rollers, a second pair of high-temperature drawing hot rollers, a third pair of high-temperature drawing hot rollers, a fourth pair of drawing and shaping hot rollers, a fifth pair of drawing and shaping hot rollers, a guide disc, a final interlacer and a winding head which are sequentially arranged according to the production process; the filament bundles are sequentially subjected to oiling, pre-networking, feeding and splitting, five pairs of rollers, guiding, final networking and winding, a second pair and a third pair are drafted, a fourth pair is subjected to retraction setting, and the filament bundles are subjected to retraction setting of a fifth pair, so that three fine denier industrial filaments of PET, PBT and PTT can be spun, and the PET filament subjected to the retraction setting of the fifth pair can obtain better quality; aiming at different polyester materials, different drafting and setting temperatures and different drafting ratios of rollers are adopted, so that physical indexes such as strength, modulus, elongation, dry heat shrinkage rate and the like required by different filaments for the polyester fine denier industry are formed in the processes of tensioning, stretching orientation, stretching crystallization, setting, drafting and winding; by arranging enough hot rollers, the temperature of the filament bundle can be gradually increased, which is beneficial to gradually orienting and crystallizing fibers so as to achieve the mechanical properties of different filaments for the polyester fine denier industry; the production equipment can be used for producing the PET, PBT and PTT three fine denier industrial filaments, thereby simplifying plant equipment and a spinning production line, reducing the production cost and being beneficial to maintaining the competitiveness of enterprises.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

FIG. 1 is a schematic view of the overall structure of a multifunctional polyester fine denier industrial filament spinning drafting and winding combination machine of example 1;

FIG. 2 is a schematic view of the drafting and winding device shown in FIG. 1;

FIG. 3 is a schematic view showing the overall structure of a screw extruder provided in example 5;

FIG. 4 is a schematic view of the screw of FIG. 3;

FIG. 5 is a schematic view of the detailed structure of the metering section in FIG. 4;

FIG. 6 is a schematic view of the screw heating zone of FIG. 4;

FIG. 7 is an enlarged view of a portion of the cone-shaped torpedo of FIG. 3;

FIG. 8 is a front view of the manifold provided in example 6;

FIG. 9 is a left side cross-sectional view of the structure shown in FIG. 8;

FIG. 10 is a top cross-sectional view of the structure shown in FIG. 8;

FIG. 11 is a first schematic view of the discharge and hot rolls of the two rows of spinning assemblies of FIG. 8;

FIG. 12 is a second schematic view of the discharge and hot rolls of the two rows of spinning assemblies of FIG. 8;

FIG. 13 is a schematic diagram of several practical configurations of the spin pack assembly provided in example 7;

FIG. 14 is a schematic diagram of the second row of the lower row of the patterns in FIG. 13;

FIG. 15 is a schematic diagram of the detailed structure of the lower row pattern of the third column in FIG. 13;

FIG. 16 is a schematic view of a part of the spinning apparatus in FIG. 1;

FIG. 17 is a schematic view of the intercooler unit of FIG. 16;

FIG. 18 is a schematic structural view of the slow cooling air device in FIG. 16;

FIG. 19 is a top cross-sectional view of the structure shown in FIG. 18;

fig. 20 is a detailed structural view of the circular air blow cooling part in fig. 16.

Detailed Description

The embodiment of the application provides a multifunctional filament spinning, drafting and winding combination machine for polyester fine denier industry, and solves the technical problem that spinning equipment cannot be used for producing filaments for PET, PBT and PTT fine denier industry in the related technology.

Example 1

Referring to fig. 1, the present embodiment provides a multifunctional filament spinning, drafting and winding combination machine for polyester fine denier industry, which includes a spinning device 100 and a drafting and winding device 200 arranged in parallel with the spinning device 100. In order to avoid damage due to strong deflection and entanglement and to avoid different physical properties, it is known that a defined limit value is not allowed to be exceeded during the deflection of the thread, and the thread bundle coming from the spinning device 100 enters the drafting and winding device 200 in a non-deflected manner, which solves the above-mentioned problems.

Referring to fig. 2, the drawing and winding apparatus 200 includes an oiling mechanism 10, a pre-networking device 14, a feeding roller and a dividing roller 15, a first pair of low temperature hot rollers 16, a second pair of high temperature drawing hot rollers 17, a third pair of high temperature drawing hot rollers 18, a fourth pair of drawing and shaping hot rollers 19, a fifth pair of drawing and shaping hot rollers 20, a guiding disc, a final networking device 22 and a winding head 23, which are sequentially arranged according to a production process. Wherein, fig. 2 shows two sets of guiding discs, two sets of net terminating machines and two sets of winding heads.

In the spinning, drawing and winding combination machine of the present embodiment, the spinning device 100 can input any one of PET chips, PBT chips and PTT chips to the screw extruder 1, and send out any one of PET tows, PBT tows and PTT tows from the shaft 7, and convey the tows in parallel to the oiling mechanism 10. The parallel transfer further includes that the arrangement direction of the plurality of the oiling rollers in the draft winding device 200, the axial direction of the heat roller, and the arrangement direction of the spin pack 3 in the spinning box 2 are the same.

The spinning drafting and winding combination machine of the embodiment is used for producing the filaments for PET, PBT and PTT fine denier industry, any one of the PET, PBT and PTT slices is input into the spinning device 100, the spinning device 100 produces any one of the PET tows, PBT tows and PTT tows, the tows are conveyed to the oiling mechanism 10, and the tows sequentially pass through oiling, pre-meshing, feeding and splitting, five pairs of rollers, guiding, final meshing and winding.

The feeding roller and the filament separating roller 15 have no heating function, and have the function of holding the nascent filament bundle and giving the filament bundle certain filament bundle. The first pair of low temperature hot rolls 16 cooperate with the upper pair of rolls to maintain the tow at a tension and to preheat the tow at a low temperature. The second pair of high temperature drawing heat rollers 17 heats the yarn bundle to a higher temperature and performs drawing operation, and has a larger drawing ratio in cooperation with the upper pair of rollers. The third pair of high temperature drafting heat rollers 18 heats the tows to a higher temperature and performs drafting operation, and has a larger drafting multiple by matching with the upper pair of rollers. The fourth pair of drawing and shaping hot rollers 19 also has a heating function to maintain the temperature of the filament bundle and has a drawing multiple slightly less than 1 in cooperation with the upper pair of rollers, so that the filament bundle is subjected to one-time retraction shaping. The fifth pair of drawing and shaping hot rollers 20 also has a heating function and has a drawing multiple slightly smaller than 1 in cooperation with the upper pair of rollers, so that the tow is subjected to the drawing and shaping again.

In summary, with the spinning, drafting and winding combination machine of the present embodiment, the second pair of high temperature drafting hot rollers 17 and the third pair of high temperature drafting hot rollers 18 are used for drafting, the fourth pair of drafting and shaping hot rollers 19 are used for retraction and shaping, and the combination machine is used for spinning three fine denier industrial filaments of PET, PBT and PTT through the retraction and shaping of the fifth pair of drafting and shaping hot rollers 20; the fifth pair of idle drawing and shaping hot rollers 20 can be selected for the PET tows, and the PET filaments obtained by the method can be further retracted and shaped by the fifth pair of drawing and shaping hot rollers 20, so that the obtained PET filaments have better quality.

In the combination machine, different polyester materials are subjected to different drafting and setting temperatures and different drafting ratios of rollers, so that physical indexes such as strength, modulus, elongation, dry heat shrinkage rate and the like required by different polyester fine denier industrial filaments are formed in the processes of tensioning, stretching orientation, stretching crystallization, setting drafting and winding. By arranging enough hot rollers, the temperature of the filament bundle can be gradually increased, which is beneficial to gradually orienting and crystallizing the fiber so as to achieve the mechanical properties of different filaments for the polyester fine denier industry. Therefore, the production of the filaments for the PET, PBT and PTT three types of fine denier industries can be finished through one production device of the multifunctional filament spinning, drafting and winding combination machine for the polyester fine denier industry, the plant equipment and the spinning production line are simplified, the requirements on the production plant land and the building area are reduced, the production cost of the filament fibers for the polyester fine denier industry is reduced, the competitive capacity of enterprises is increased, the high-speed development of the filaments for the polyester fine denier industry is maintained, and the filament spinning, drafting and winding combination machine is widely applied to the fields of high-grade clothes, bags, shoes and hats, personal protection, military supplies and the like.

Optionally, referring to fig. 2, the draft winding device 200 further includes a first godet wheel 13-1 and a second godet wheel 13-2 respectively disposed before and after the pre-interlacer 14, the tow from the front passes through the first godet wheel 13-1 and then enters the pre-interlacer 14, and the tow coming out of the pre-interlacer 14 is conveyed to the second godet wheel 13-2 and then is continuously conveyed backwards. The godet wheel not only plays a role in guiding the tows, but also can unload a part of tension of the tows, so that the tows smoothly enter and exit the pre-interlacer 14 and the operation in the pre-interlacer 14 is completed.

Referring to fig. 2, the draft winding device 200 further includes a plurality of yarn guides capable of maintaining tension of the filament bundle in addition to a basic guiding function of the filament bundle, and specifically includes a first yarn guide 12-1 disposed between the oiling mechanism 10 and the spinning device 100 according to the filament bundle path, a second yarn guide 12-2 disposed between the second godet wheel 13-2 and the feeding and dividing rollers 15 according to the filament bundle path, a third yarn guide 12-3 disposed between the feeding and dividing rollers 15 and the first pair of low temperature hot rollers 16 according to the filament bundle path, and a fourth yarn guide 12-4 disposed between the guiding guide tray and the final yarn guide 22 according to the filament bundle path.

Referring to fig. 1 and 2 in combination, 2 rows of tows come out from the spinning assembly 3, the drafting and winding device 200 is provided with two sets of first godet devices 12-1, two sets of oiling mechanisms 10, two sets of first godet wheels 13-1, two sets of pre-networking devices 14 and two sets of second godet wheels 13-2, the two sets of second godet wheels 13-2 are arranged close to each other in height and are arranged left and right horizontally, and the two rows of tows form a row of tows after passing through the second godet wheels 13-2, and the specific structure supporting the above processes will be described in detail in other embodiments.

The above description explains that different polyester materials are different drafting and setting temperatures and different drafting ratios of the rollers, and in the scheme of the embodiment, the polyester materials are mainly based on three polyester materials of PET, PBT and PTT. Specifically, the method comprises the following steps:

the surfaces of the shell of the feeding roller and the filament separating roller 15 are made of ceramic, the size of the feeding roller can be phi 220x500mm, the size of the filament separating roller can be phi 110x500mm, the surface roughness Ra =0.8-1.2um, no heating is performed, the function of the feeding roller and the filament separating roller is to hold the nascent filament bundle and give the filament bundle a certain speed of 550-650m/min, and the filament bundle is wound on the rollers for 3 circles and is conveyed to the first pair of low-temperature hot rollers 16.

The surface of the roller shell of the first pair of low-temperature hot rollers 16 is ceramic, the surface roughness Ra =2.1-2.5um, the size of the roller can be phi 250mmx550mm, and the first pair of low-temperature hot rollers 16, the feeding roller and the filament separating roller 15 are kept in a proportion of 1.05:1, the tows keep certain tension, are stably spread on the surface of a first pair of low-temperature hot rollers 16 and are preheated at low temperature, the temperature is set to be 65-90 ℃, the speed is 577-683m/min, and the tows are wound on the first pair of low-temperature hot rollers 16 and then are conveyed to a second pair of high-temperature drafting hot rollers 17.

The surface of the roller shell of the second pair of high-temperature drawing hot rollers 17 is ceramic, the surface roughness Ra =2.1-2.5um, the size of the roller can be phi 250mmx550mm, the drawing multiple of the second pair of high-temperature drawing hot rollers 17 and the first pair of low-temperature hot rollers 16 is 2.5-3.5 times, the temperature of the second pair of high-temperature drawing hot rollers 17 is set to be 130-160 ℃, and the speed is 1443-2390m/min. The filament bundle is wound on the second pair of high temperature drawing heat rolls 17 and then conveyed to the third pair of high temperature drawing heat rolls 18.

The third pair of high temperature drafting hot rollers 18 can have the size of phi 250mmx550mm, the surface of the roller shell is made of ceramic, the surface roughness Ra =2.1-2.5um, the drafting multiple of the third pair of high temperature drafting hot rollers 18 and the second pair of high temperature drafting hot rollers 17 is 1.2-2.5 times, the temperature is set to be 140-220 ℃, the spinning speed is 2900-4200m/min, and the filament bundle is wound on the third pair of high temperature drafting hot rollers 18 and then conveyed to the fourth pair of drafting shaping hot rollers 19.

The fourth pair of drawing and shaping hot rollers 19 can have the size of phi 250mmx550mm, the roller shell surface is made of ceramic, the surface roughness Ra =2.1-2.5um, the drawing multiple of the fourth pair of drawing and shaping hot rollers 19 and the third pair of high-temperature drawing hot rollers 18 is 0.92-0.98 times, the temperature is set to be 160-240 ℃, the spinning speed is 2800-3900m/min, and the filament bundle is wound on the fourth pair of drawing and shaping hot rollers 19 and then conveyed to the fifth pair of drawing and shaping hot rollers 20.

The fifth pair of drafting and shaping hot rollers 20 can have the size of phi 250mmx550mm, the surface of the roller shell is made of ceramic, the surface roughness Ra =2.1-2.5um, the drafting multiple of the fifth pair of drafting and shaping hot rollers 20 and the fourth pair of drafting and shaping hot rollers 19 is 0.92-0.98 times, the temperature is set to be 200-250 ℃, the spinning speed is 2750-3800m/min, preferably 2865m/min, and the filament bundle is wound on the fifth pair of drafting and shaping hot rollers 20 and then conveyed to a relaxation guide disc.

It should be noted that the spinning draft winding combination machine of the present embodiment can spin 12-end and 24-end industrial polyester fine denier filaments due to the structural features of the spinning device 100. When spinning 12 heads, referring to fig. 2, only one guide disc enters into operation, for example, the filament bundle is sequentially conveyed from the fifth pair of drawing and shaping hot rollers 20 to the first guide disc 21-1, the fourth filament guide 12-4 right below the first guide disc 21-1, the final yarn guide 22 right below the fourth filament guide 12-4 to the winding head 23; when spinning 24 ends, the filament bundle is respectively conveyed from the fifth pair of drafting and shaping hot rollers 20 to the first guide disc 21-1 and the second guide disc 21-2, and then respectively conveyed to the corresponding fourth filament guide 12-4, the final network device 22 and the winding head 23.

The optional size of the relaxation guide disc is phi 220x300mm, the surface of the roller shell is ceramic, the surface roughness Ra =2.1-2.5um, the guide disc has no heating function, and the spinning speed is 2700-3700m/min.

As described above, in the present embodiment, there are two main schemes of spinning 12 ends and 24 ends, when spinning 12 ends, the filament bundle is wound on the first pair of low-temperature heat roller 16, the second pair of high-temperature drawing heat roller 17, the third pair of high-temperature drawing heat roller 18, the fourth pair of drawing shaping heat roller 19 and the fifth pair of drawing shaping heat roller 20 for 9 turns; when 24 ends are spun, the filament bundle is wound on the first pair of low-temperature heat rollers 16, the second pair of high-temperature drawing heat rollers 17, the third pair of high-temperature drawing heat rollers 18, the fourth pair of drawing shaping heat rollers 19 and the fifth pair of drawing shaping heat rollers 20 for 5 turns, which is less than 9 turns.

The 12-head and 24-head spinning are examples, and the number of heads is specifically related to the size of the spinning beam, the spinning pack, each roller, and the like, and 10-head and 20-head spinning can be performed.

Example 2

Based on the filament spinning drafting winding combination machine for the multifunctional polyester fine denier industry in the embodiment 1, the PET chips are adopted to spin the filament for the polyester fine denier industry, the filament is spun at 33dtex-111dtex and 24 ends, the filament is spun at 125dtex-333dtex and 12 ends; the raw silk is oiled by a left-right moving opposite oiling mechanism 10, enters a pre-interlacer 14 through a first silk guide wheel 13-1, then enters a second silk guide wheel 13-2, then enters a second silk guide 12-2, is conveyed to a feeding roller and a silk dividing roller 15, is wound on the feeding roller and the silk dividing roller 15 for 3 circles without heating, has the function of holding the raw silk and gives a certain speed to the silk, the speed is 580m/min, and is conveyed to a first pair of low-temperature hot rollers 16 after being wound on the feeding roller and the silk dividing roller 15. The feeding roller and the filament separating roller 15 are kept 1:1.05 The tow is kept at a certain tension, is stably spread on the surface of a first pair of low-temperature hot rollers 16, and is preheated at low temperature, the temperature is set to 80 ℃, and the speed is 609m/min.

The filament bundle is wound on the first pair of low-temperature hot rollers 16 for 5 circles (24 ends) to 9 circles (12 ends) and then transferred to the second pair of high-temperature drafting hot rollers 17, the drafting times of the second pair of high-temperature drafting hot rollers 17 and the first pair of low-temperature hot rollers 16 are generally 3 times, the temperature is set to be 140 ℃, and the speed is 1827m/min. The filament bundle is wound on the second pair of high-temperature drafting hot rollers 17 for 5 circles (24 heads) to 9 circles (12 heads) and then conveyed to the third pair of high-temperature drafting hot rollers 18, the drafting multiples of the third pair of high-temperature drafting hot rollers 18 and the second pair of high-temperature drafting hot rollers 17 are generally 2 times, the temperature is set to be 220 ℃, and the spinning speed is 3654m/min. The filament bundle is wound on the third pair of high temperature drafting heat rollers 18 for 5 circles (24 ends) to 9 circles (12 ends) and then conveyed to the fourth pair of drafting and shaping heat rollers 19. The draft times of the fourth pair of draft setting hot rollers 19 and the third pair of high temperature draft hot rollers 18 are generally 0.98 times, the temperature is set to 240 ℃, and the spinning speed is 3581m/min. The filament bundle is wound on the fourth pair of drafting and shaping hot rollers 19 for 5 circles (24 ends) to 9 circles (12 ends) and then conveyed to the fifth pair of drafting and shaping hot rollers 20. The draft times of the fifth pair of draft shaping hot rollers 20 and the fourth pair of draft shaping hot rollers 19 are generally 0.97 times, the temperature is set to 240 ℃, and the spinning speed is 3502m/min.

The filament bundle is wound on the fifth pair of drafting and shaping hot rollers 20 for 5 circles (24 circles) to 9 circles (12 circles) and then conveyed to the first guide disc 21-1 and/or the second guide disc 21-2. If 12 tows are spun, a winding device 23 is adopted, the tows are conveyed to a guide disc 21-1, the tows are conveyed to a final net 22 to be knotted after tension winding is eliminated, and the tows are sequentially conveyed to an iBWA series winding device 23 to be wound after being knotted; if 24 tows are spun, two winding devices 23 are adopted, the tows are divided into two strands, one strand is conveyed to a first guide disc 21-1, the other strand enters a second guide disc 21-2 through the first guide disc 21-1, the strands are sent to a final net 22 to be knotted after tension is eliminated and wound, and the strands are sequentially conveyed to an iBWA series winding device 23 to be wound after being knotted.

First direction guide disc 21-1 and second direction guide disc 21-2, the roller shell surface is pottery, and surface roughness Ra =2.1-2.5um, does not have the heating function. The spinning speed is 3502m/min. After tension is eliminated, the filament bundles are wound to respective final nets 22 to be knotted, the filament bundles are sequentially conveyed to an iBWA series winding device 23 to be wound after being knotted, 12 ends are finished by adopting 1 winding device 23, and 24 ends are finished by adopting 2 winding devices 23. The spinning speed is 3500m/min. It is characterized by being capable of producing 12-24-end Polyester (PET) fine denier industrial filament.

Example 3

Based on the filament spinning drafting winding combination machine for the multifunctional polyester fine denier industry in the embodiment 1, PBT slices are adopted to spin the filament for the polyester fine denier industry, and the filament is spun at 33dtex-111dtex and 24 ends and is spun at 125dtex-333dtex and 12 ends. The crude filament bundle is held and given a certain speed of 570m/min by the action of no heating, and is conveyed to a first pair of low-temperature hot rollers 16 after being wound on a feeding roller and a filament dividing roller 15. The feeding roller, the dividing roller and the first pair of low-temperature hot rollers are kept in a ratio of 1:1.05 The tow is kept at a certain tension, is stably spread on the surface of a first pair of low-temperature hot rollers 16, and is preheated at low temperature, the temperature is set to 85 ℃, and the speed is 599m/min.

The filament bundle is wound on the first pair of low-temperature hot rollers 16 for 5 circles (24 circles) to 9 circles (12 circles) and then conveyed to the second pair of high-temperature drafting hot rollers 17, the drafting times of the second pair of high-temperature drafting hot rollers 17 and the first pair of low-temperature hot rollers 16 are generally 2.9 times, the temperature is set to 145 ℃, and the speed is 1736m/min. The filament bundle is wound on the second pair of high-temperature drafting hot rollers 17 for 5 circles (24 heads) to 9 circles (12 heads) and then conveyed to the third pair of high-temperature drafting hot rollers 18, the drafting times of the third pair of high-temperature drafting hot rollers 18 and the second pair of high-temperature drafting hot rollers 17 are generally 2 times, the temperature is set to be 220 ℃, and the spinning speed is 3472m/min. The filament bundle is wound on the third pair of high-temperature drawing hot rollers 18 for 5 circles (24 ends) to 9 circles (12 ends) and then conveyed to the fourth pair of drawing and shaping hot rollers 19. The draft times of the fourth pair of hot drawing and shaping rollers 19 and the third pair of hot drawing and shaping rollers 18 are generally 0.97 times, the temperature is set to 235 ℃, and the spinning speed is 3367m/min. The filament bundle is wound on the fourth pair of drafting and shaping hot rollers 19 for 5 circles (24 ends) to 9 circles (12 ends) and then conveyed to the fifth pair of drafting and shaping hot rollers 20. The draft times of the fifth pair of draft setting hot rollers 20 and the fourth pair of draft setting hot rollers 19 are generally 0.96 times, the temperature is set to 240 ℃, and the spinning speed is 3232m/min.

The filament bundle is wound on the fifth pair of drafting and shaping hot rollers 20 for 5 circles (24 circles) to 9 circles (12 circles) and then conveyed to the first guide disc 21-1 and/or the second guide disc 21-2. If 12 tows are spun, a winding device 23 is adopted, the tows are conveyed to a guide disc 21-1, are sent to a final network 22 to be knotted after tension is eliminated and are sequentially conveyed to an iBWA series winding device 23 to be wound after being knotted. If 24 tows are spun, two winding devices 23 are adopted, the tows are divided into two strands, one strand is conveyed to a first guide disc 21-1, the other strand enters a second guide disc 21-2 through the first guide disc 21-1, the strands are sent to a final net 22 to be knotted after tension is eliminated and wound, and the strands are sequentially conveyed to an iBWA series winding device 23 to be wound after being knotted.

First direction guide disc 21-1 and second direction guide disc 21-2, the roller shell surface is pottery, and surface roughness Ra =2.1-2.5um, does not have the heating function. The spinning speed is 3232m/min. And after tension is eliminated, the filament bundle is wound and sent to a final network 22 to be knotted, the filament bundle is sequentially sent to an iBWA series winding device 23 to complete winding after being knotted, 12 ends are completed by adopting 1 winding device 23, and 24 ends are completed by adopting 2 winding devices 23. The spinning speed is 3250m/min. The method is characterized in that the method can produce 12-24-end Polyester (PBT) fine denier industrial filaments.

Example 4

Based on the filament spinning drafting winding combination machine for the multifunctional polyester fine denier industry in the embodiment 1, the PTT chip is adopted to spin the filament for the polyester fine denier industry, the filament is spun at 33dtex-111dtex and 24 ends, and the filament is spun at 125dtex-333dtex and 12 ends. The raw silk is oiled by a left-right moving opposite oiling mechanism 10, enters a pre-interlacer 14 through a first silk guide wheel 13-1, then enters a second silk guide wheel 13-2, then enters a second silk guide 12-2, is conveyed to a feeding roller and a silk dividing roller 15, is wound on the feeding roller and the silk dividing roller 15 for 3 circles, is not heated, has the function of holding the raw silk and gives a certain speed to the silk, the speed is 565m/min, and is conveyed to a first pair of low-temperature hot rollers 16 after being wound on the feeding roller and the silk dividing roller 15. The feeding roller, the dividing roller and the first pair of low-temperature hot rollers are kept in a ratio of 1:1.05 The speed ratio of (1) is to keep the tow at a certain tension, to stably spread the tow on the surface of the first pair of low-temperature hot rollers 16, and to preheat the tow at low temperature, the temperature is set at 75 ℃ and the speed is 594m/min.

The filament bundle is wound on the first pair of low temperature hot rollers 16 for 5 turns (24 ends) to 9 turns (12 ends) and then transferred to the second pair of high temperature drafting hot rollers 17, the drafting times of the second pair of high temperature drafting hot rollers 17 and the first pair of low temperature hot rollers 16 are generally 3.1 times, the temperature is set to 135 ℃, and the speed is 1839m/min. The filament bundle is wound on the second pair of high temperature drafting hot rollers 17 for 5 circles (24 heads) to 9 circles (12 heads) and then conveyed to the third pair of high temperature drafting hot rollers 18, the drafting times of the third pair of high temperature drafting hot rollers 18 and the second pair of high temperature drafting hot rollers 17 are generally 2 times, the temperature is set to be 225 ℃, and the spinning speed is 3678m/min. The filament bundle is wound on the third pair of high-temperature drawing hot rollers 18 for 5 circles (24 ends) to 9 circles (12 ends) and then conveyed to the fourth pair of drawing and shaping hot rollers 19. The draft times of the fourth pair of draft setting hot rolls 19 and the third pair of high temperature draft hot rolls 18 are generally 0.96 times, the temperature is set to 230 ℃, and the spinning speed is 3531m/min. The filament bundle is wound on the fourth pair of drafting and shaping hot rollers 19 for 5 circles (24 ends) to 9 circles (12 ends) and then conveyed to the fifth pair of drafting and shaping hot rollers 20. The draft times of the fifth pair of draft setting hot rollers 20 and the fourth pair of draft setting hot rollers 19 are generally 0.98 times, the temperature is set to 235 ℃, and the spinning speed is 3460m/min.

The filament bundle is wound on the fifth pair of drafting and shaping hot rollers 20 for 5 circles (24 circles) to 9 circles (12 circles) and then conveyed to the first guide disc 21-1 and/or the second guide disc 21-2. If 12 tows are spun, a winding device 23 is adopted, the tows are conveyed to a guide disc 21-1, the tows are conveyed to a final net 22 to be knotted after tension winding is eliminated, and the tows are sequentially conveyed to an iBWA series winding device 23 to be wound after being knotted. If 24 tows are spun, two winding devices 23 are adopted, the tows are divided into two strands, one strand is conveyed to a first guide disc 21-1, the other strand enters a second guide disc 21-2 through the first guide disc 21-1, the two strands are conveyed to a final network 22 to be knotted after tension is eliminated and wound, and the tows are sequentially conveyed to an iBWA series winding device 23 to be wound after being knotted.

First direction guide disc 21-1 and second direction guide disc 21-2, the roller shell surface is pottery, and surface roughness Ra =2.1-2.5um, does not have the heating function. The spinning speed is 3460m/min. And after tension is eliminated, the filament bundle is wound to a final net 22 to be knotted, and after the filament bundle is knotted, the filament bundle is sequentially conveyed to an iBWA series winding device 23 to be wound, 12 ends are finished by adopting 1 winding device 23, and 24 ends are finished by adopting 2 winding devices 23. The spinning speed is 3480m/min. It is characterized by being capable of producing 12-24-end Polyester (PTT) fine denier industrial filaments.

Example 5

The present example further defines the screw extruder of the spinning apparatus based on the multifunctional filament spinning, drafting and winding combination machine for polyester fine denier industry of examples 1-4.

The embodiment provides a screw extruder, please refer to fig. 3, which includes a barrel 1-2, a screw 1-1 inserted into the barrel 1-2, and a heating ring 1-3 installed outside the barrel 1-2, please refer to fig. 4, the screw 1-1 includes a feeding section 1-1-1, a compression section 1-1-2, and a metering section 1-1-3, and the feeding section 1-1-1, the compression section 1-1-2, and the metering section 1-1-3 are connected in sequence.

In the screw extruder of this embodiment, referring to fig. 4, along the axial direction of the screw 1-1, the metering section 1-1-3 is divided into 4 parts in total, namely, a first metering section 1-1-3a, a second metering section 1-1-3b, a third metering section 1-1-3c and a conical torpedo head 1-1-3d, wherein the first metering section 1-1-3a, the second metering section 1-1-3b, the third metering section 1-1-3c and the conical torpedo head 1-1-3d are sequentially connected, and one end of the first metering section 1-1-3a far from the second metering section 1-1-3b is connected with one end of the compression section 1-1-2 far from the feeding section 1-1-1. In addition, referring to fig. 5, a plurality of straight grooves 1-1-3a-1 are formed at the bottoms of the spiral grooves of the first metering sections 1-1-3a, the length direction of the straight grooves 1-1-3a-1 is the same as the axial direction of the screw rod 1-1, the second metering sections 1-1-3b are arranged in an equidistant threaded manner, and diamond blocks are uniformly arranged on the peripheries of the third metering sections 1-1-3c to form splines.

Specifically, the screw 1-1 of the screw extruder has a uniquely determined length-diameter ratio and a compression ratio, and different polyester chips are fused into a melt by using the same extruder, and the inventor adopts a mode of increasing the length of the screw 1-1 on the current equipment specification, which is characterized in that the length-diameter ratio of the original screw is increased.

The inventor decides to lengthen the metering sections 1-1-3 by the angle of increasing the length of the original screw. Furthermore, the original equipment specification is taken as a reference, and the metering section 1-1-3 is lengthened, so that the positive flow of the melt is increased, and the shearing action of the polyester melt is reduced; however, the lengthening of the metering sections 1-1-3 brings about a situation that the overall heating efficiency of the screw extruder is somewhat reduced, and also causes a reduction in the viscosity drop of the polyester in the region from the head to the tail of the screw, and a corresponding reduction in the melt backflow.

In detail, referring to the above solution of the embodiment, as shown in fig. 5, the first metering section 1-1-3a includes screw ridges between which screw grooves are formed, and the first metering section 1-1-3a has a plurality of straight grooves 1-1-3a-1 at the bottom of the screw grooves, wherein the straight grooves 1-1-3a-1 have a length direction which is the same as the axial direction of the screw 1-1. When the compression section 1-1-2 feeds materials to the first metering section 1-1-3a, the melt enters the spiral groove of the first metering section 1-1-3a and advances along the spiral groove, and when the melt passes through the area of the straight groove 1-1-3a-1, the melt is influenced by the straight groove 1-1-3a-1, a turnover movement area exists near the straight groove 1-1-3a-1, and the melt is turned over, wherein the turnover has a rotation direction similar to the length direction of the straight groove 1-1-3 a-1; when the turnover movement is generated near the straight groove 1-1-3a-1, the melt is influenced by the screw edge at the same time, and the melt can generate three-dimensional turnover under the combined action of the straight groove 1-1-3a-1 and the screw edge, so that the split-flow mixing effect can be realized.

On the other hand, the first metering section 1-1-3a with the straight groove 1-1-3a-1 also reduces the shear rate of the melt, so that the melt is less prone to decomposition; the first metering section 1-1-3a having the straight groove 1-1-3a-1 has a larger contact area with the melt than a circular cross section of a conventional screw, which improves the melt extrusion effect, and the screw 1-1 of this embodiment has a higher conveying capacity than a conventional screw at the same rotation speed of the screw 1-1.

In addition, the first metering section 1-1-3a forms a concave-convex structure through the arrangement of the straight groove 1-1-3a-1, the contact area of the melt and the screw 1-1 is increased, the friction force between the melt and the screw 1-1 is increased, the capability of the screw 1-1 for conveying the melt is increased, the melt is easier to move between the screw 1-1 and the screw sleeve 1-2, the moving speed of the melt is increased, the energy loss of the melt in the first metering section 1-1-3a can be reduced, and the shearing heat of the melt is reduced.

In conclusion, the first metering section 1-1-3a has smaller shearing force to the melt and also has larger mixing effect to the melt by arranging the straight groove 1-1-3a-1, so that the temperature of the melt tends to be uniform, the melt passing through the compression section 1-1-2 has higher uniformity, and finally the spinning quality is improved, including the increase of the strength of the filament bundles, the reduction of the end breakage rate and the increase of the full-lap rate.

The melt enters a region of a second metering section 1-1-3b after passing through a first metering section 1-1-3a, the second metering section 1-1-3b is longer, and the second metering section 1-1-3b is arranged in an equidistant thread manner; the melt passes through the second metering section 1-1-3b and then enters the area of the third metering section 1-1-3c, the third metering section 1-1-3c is provided with splines, one possible embodiment of the splines is that diamond blocks with a large number are uniformly arranged on the periphery as shown in figure 5, and the melt is scattered by the splines and then enters the conical torpedo head 1-1-3d. The conical torpedo 1-1-3d is used for forming a channel with gradually reduced cross-sectional area with the periphery as shown in figure 7, so that the melt can smoothly enter a melt conveying pipeline connected with the outlet of the screw extruder after flowing through the conical torpedo 1-1-3d. Wherein the conical torpedo head 1-1-3d also has a guiding function on the melt.

From the integral angle, when the melt enters the metering section 1-1-3 from the compression section 1-1-2, the melt is mixed and the movement direction is changed in the first metering section 1-1-3a, so that the mixing effect is improved, and the melt is more molten; the melt moving direction is changed once again when the melt enters the second metering section 1-1-3b from the first metering section 1-1-3a, so that the mixing effect is improved, the full melting effect is achieved, and the shearing heat is reduced due to the change of the flow direction; the spline entering the third metering section 1-1-3c from the second metering section 1-1-3b changes the movement direction of the melt once again, so that the mixing effect is improved, the full melting effect is achieved, and the shearing heat is reduced due to the change of the flow direction; finally, the molten material is smoothly guided into a melt conveying pipeline through the conical torpedo head 1-1-3d.

The moving direction of the melt is changed through the three times, so that the melt is fully mixed, the melt is more fully melted, the shearing heat is further reduced, the shearing heat can be reduced and the shearing speed can be reduced by combining the design of the straight groove 1-1-3a-1 of the first metering section 1-1-3a, the melt can move forward in a screw extruder more easily, the larger length can be designed for the screw 1-1 of the screw extruder, and various polyester materials such as PET, PBT and PTT can be heated, melted, compressed and mixed in a longer process, so that the spinning quality is improved, the purpose that the same screw extruder is used for producing various polyester spinning is realized, and a foundation is provided for producing various polyester spinning by one device.

In a preferred embodiment, as shown in FIG. 5, a greater number of straight grooves 1-1-3a-1 are provided at the bottom of the spiral groove of the first metering section 1-1-3a, and the plurality of straight grooves 1-1-3a-1 are arranged at the bottom of the groove in a uniformly spaced manner. The length of the straight groove 1-1-3a-1 is further limited, and two ends of the length of the straight groove are limited to be respectively arranged at the positions of the spiral edges of the first metering section 1-1-3a, namely the groove walls at two ends of the length of the straight groove 1-1-3a-1 are respectively arranged on the spiral edges of the first metering section 1-1-3a, so that the function of the straight groove 1-1-3a-1 is increased as much as possible.

The length-diameter ratio of a screw extruder for spinning terylene is 25:1. alternatively, the screw extruder of the embodiment is used for producing the filament for the polyester fine denier industry, and the length-diameter ratio L/D of the screw 1-1 is controlled to be 26:1 to 30:1, so as to relatively increase the length of the screw 1-1 and realize the purpose that the same screw extruder is used for producing various polyester spinning yarns.

After the length-diameter ratio is increased, the metering section 1-1-3 of the screw rod 1-1 is correspondingly lengthened, the countercurrent and the leakage flow are correspondingly reduced, so the extrusion amount is correspondingly increased, meanwhile, the residence time of the polyester material in the screw groove 1-1 of the screw rod is increased, the plasticizing capacity is increased, the rotating speed of the screw rod 1-1 can be properly increased, and the production capacity of a screw extruder is improved. Meanwhile, the polyester material is melted uniformly, so that the plasticizing quality is good, and the root cause of fluctuation is reduced.

The inventor further limits the compression ratio of the screw 1-1, controls the compression ratio to be 2.19-2.5, ensures the discharge of material gas on one hand, is beneficial to uniformity, can improve the blockage problem possibly caused by solid materials on the other hand, improves the defect of pressure fluctuation, has enough screw diameter of a feeding section area, and ensures the screw strength of the feeding section area.

A preferred embodiment, L =28D, the length of the feed section 1-1-1 is 9D, the length of the compression section 1-1-2 is 5D, the length of the first metering section 1-1-3a is 3D, the length of the second metering section 1-1-3b is 7D, the length of the third metering section 1-1-3c is 3D, and the length of the conical torpedo head 1-1-3D is 1D.

When different polyester chips, such as PET, PBT and PTT, are subjected to different head pressures and different temperature settings by adopting the screw 1-1 with the same length-diameter ratio and compression ratio, the different polyester chips are uniformly melted to be a melt and are ready to enter the next mechanism.

The heating zone of the screw 1-1 is divided into 6 zones in the axial direction, namely a first zone 1-1-4a, a second zone 1-1-4b, a third zone 1-1-4c, a fourth zone 1-1-4d, a fifth zone 1-1-4e and a sixth zone 1-1-4f, as shown in fig. 6, the first zone 1-1-4a and the second zone 1-1-4b correspond to a feeding section 1-1-1 together, the third zone 1-1-4c corresponds to a compression section 1-1-2, and the fourth zone 1-1-4d, the fifth zone 1-1-4e and the sixth zone 1-1-4f correspond to a metering section 1-1-3 together. It is further defined that the first zone 1-1-4a is of equal length to the second zone 1-1-4b and that the fourth zone 1-1-4d, the fifth zone 1-1-4e and the sixth zone 1-1-4f are of equal length.

When PET slices are adopted to spin polyester fine denier industrial filaments: the slice viscosity is 0.95 to 1.05, preferably 0.98; the compression ratio of the screw 1-1 is 2.19-2.5, preferably 2.21; the length-diameter ratio of the screw 1-1 adopts 26:1-30:1, preferably 28:1; the set temperature of the first zone 1-1-4a is 285 ℃, the set temperature of the second zone 1-1-4b is 292 ℃, the set temperature of the third zone 1-1-4c is 295 ℃, the set temperature of the fourth zone 1-1-4d is 295 ℃, the set temperature of the fifth zone 1-1-4e is 291 ℃, and the set temperature of the sixth zone 1-1-4f is 287 ℃; the head pressure of the screw extruder is 12MPa.

When the PBT slice is adopted to spin the filament for the polyester fine denier industry, the slice viscosity is 0.95-1.05, and preferably the slice viscosity is 0.95; the compression ratio of the screw 1-1 is 2.19-2.5, preferably 2.21; the length-diameter ratio of the screw rod 1-1 adopts 25:1-30:1, preferably 28; the set temperature of the first zone 1-1-4a is 280 ℃, the set temperature of the second zone 1-1-4b is 295 ℃, the set temperature of the third zone 1-1-4c is 292 ℃, the set temperature of the fourth zone 1-1-4d is 290 ℃, the set temperature of the fifth zone 1-1-4e is 290 ℃, and the set temperature of the sixth zone 1-1-4f is 285 ℃; the head pressure of the screw extruder was 10MPa.

When the PTT chip is adopted to spin the filament for the polyester fine denier industry, the chip viscosity is 0.95-1.05, and preferably the chip viscosity is 1.0; the compression ratio of the screw 1-1 is 2.19-2.5, preferably 2.21; the length-diameter ratio of the screw rod 1-1 adopts 25:1-30:1, preferably 28; the set temperature of the first zone 1-1-4a is 285 ℃, the set temperature of the second zone 1-1-4b is 290 ℃, the set temperature of the third zone 1-1-4c is 296 ℃, the set temperature of the fourth zone 1-1-4d is 296 ℃, the set temperature of the fifth zone 1-1-4e is 293 ℃, and the set temperature of the sixth zone 1-1-4f is 288 ℃; the head pressure of the screw extruder was 11MPa.

Referring to fig. 3, the screw extruder further includes: the device comprises a screw extruder heat preservation cover 1-10 covered outside a heating ring 1-3, a screw extruder frame 1-9 used as an installation base, a screw extruder driving part 1-5 used for driving, a hopper 1-7 used as a feeding port, a temperature measuring element 1-4 used for measuring temperature and a pressure measuring element 1-11 used for measuring pressure.

The screw extruder further comprises the following: a rack 1-9 of the screw extruder is fixedly connected with a heat preservation cover 1-10 of the screw extruder, a driving part 1-5 of the screw extruder is in driving connection with a screw 1-1, a driving part 1-5 of the screw extruder is connected with a rack 1-9 of the screw extruder, and a temperature measuring element 1-4 is connected with a screw sleeve 1-2; the hopper 1-7 is communicated with the screw sleeve 1-2 through the blanking cooling part 1-6, and the hopper 1-7 is also provided with a nitrogen inlet 1-8.

The load cell 1-11 is used for measuring the melt pressure at the outlet of the screw extruder, and the measured melt pressure is used for regulating and controlling the screw 1-1. The control principle of the screw extruder is that melt pressure is converted into a pressure signal by a load cell 1-11, the pressure signal is transmitted to a transmitter and converted into a standard electrical signal by the transmitter, a regulating instrument for obtaining the electrical signal transmits a regulating signal, the regulating signal is output as a speed signal through a frequency converter, a driving part 1-5 of the screw extruder is regulated and controlled through the speed signal, the purpose of controlling the melt pressure is achieved, and a closed-loop control system is formed in such a circulating manner.

Example 6

The present example further defines the spinning box of the spinning device based on the multifunctional filament spinning drafting and winding combination machine for polyester fine denier industry of examples 1-5.

Referring to fig. 8 to 12, in a spinning beam 2 of the present embodiment, fig. 10 shows a horizontal section of the spinning beam 2, and fig. 10 shows a transverse centerline 2-a and a longitudinal centerline 2-b of the horizontal section, the transverse centerline 2-a is arranged along the length direction of the section, and the longitudinal centerline 2-b is perpendicular to the transverse centerline 2-a.

Referring to fig. 10, the manifold 2 is provided with the spin packs 3, and all the spin packs 3 form two rows having the same arrangement direction 3-a, and the arrangement direction 3-a is parallel to the transverse centerline 2-a. The two rows are also arranged in a stack, as shown in fig. 10, which accordingly defines a stacking direction 3-b, which stacking direction 3-b is seen to be parallel to the longitudinal centerline 2-b.

Spinning case 2 belongs to spinning draft winding combine's partial structure, and spinning draft winding combine still includes draft take-up unit, and draft take-up unit is provided with the hot-roller that is used for the draft to wind, and spinning case 2 has still been injectd: the direction of the transverse central line 2-a is parallel to the axial direction of the hot roller; the spinning assemblies 3 in two rows are arranged in a staggered mode in the direction of the transverse center line 2-a, and the distance between every two adjacent spinning assemblies 3 in one row is not smaller than the outer diameter of each spinning assembly 3.

Specifically, referring to fig. 11 and 12, two rows of spinning assemblies 3 are divided into a closer row and a farther row according to the path length to the hot roller, obviously, the filament bundle discharged from the closer row of spinning assemblies 3 can smoothly move onto the hot roller, and the distance between two adjacent spinning assemblies 3 in one row is not less than the setting of the outer diameter of the spinning assemblies 3 by arranging the two rows of spinning assemblies 3 in a staggered manner in the direction of the transverse center line 2-a, so that most of the filament bundle discharged from the farther row of spinning assemblies 3 passes through the gap of the filament bundle discharged from the closer row, and only a small part of the filament bundle passes through the edge of the spinning assembly 3 in the closer row, thereby being capable of being sent onto the hot roller.

Referring to fig. 11 and 12, the relationship between the arrangement of the spinning assembly and the arrangement of the tows on the hot roll in a stacked manner is shown, and the distance between the filament feeding position of the hot roll and the two rows of tows can be equal or unequal.

From the functional point of view, the outer diameter of the spinning pack 3 described above, which is generally the size of a circular structure; the scheme does not limit the spinning components to be in a circular structure, and only the requirement that tows coming out of a far row of spinning components 3 can pass through the gaps of tows coming out of a near row can be met.

Therefore, by adopting the spinning box 2 of the embodiment, the number of the spinning assemblies 3 can be doubled on the basis of only one row of the original spinning assemblies, and the aim of improving the integral spinning efficiency is fulfilled by increasing the number of the spinning assemblies 3; moreover, the tows sprayed by each component can be uniformly bunched on the hot roller, so that a precondition is provided for consistent drafting, and the aim of consistent drafting of the tows is finally fulfilled; in addition, the spinning assembly 3 of the embodiment is arranged in a double-row staggered manner, so that the whole structure of the spinning box 2 is more compact, the space is utilized to the maximum extent, and the length of a melt pipeline in the box body is shortened, thereby shortening the residence time of the melt, reducing the pressure drop of the melt and improving the spinning manufacturability.

Further defining a spinning box 2, referring to fig. 9 and 10, the spinning box 2 further comprises two metering pumps 2-6-3, the two metering pumps 2-6-3 are respectively arranged at two sides of the longitudinal center line 2-b, each row of spinning assemblies 3 comprises 2n spinning assemblies 3 which are uniformly arranged, the spinning box 2 is provided with 4n spinning assemblies 3, n is a positive integer and is not less than 2 and not more than 4, one metering pump 2-6-3 is connected with the n spinning assemblies 3 which are positioned at the same side in each row, and the other metering pump 2-6-3 is connected with the n spinning assemblies 3 which are positioned at the other side in each row. As will be described with reference to fig. 10, the metering pumps 2 to 6 to 3 on the left side are connected to the spinning assemblies 3 on the left side in the figure through pipes, and the metering pumps 2 to 6 to 3 on the right side are connected to the spinning assemblies 3 on the right side in the figure through pipes.

Referring to fig. 8 to 10, the spinning manifold 2 further includes a melt inlet header pipe 2-1 for receiving the melt, the melt inlet header pipe 2-1 is connected to the two metering pumps 2-6-3 through two melt branch pipes, respectively, the two melt branch pipes are a first melt branch pipe 2-1-1 and a second melt branch pipe 2-1-2 in the figure; the metering pump 2-6-3 and the spinning component 3 are connected through a melt pipeline secondary branch pipe, such as a first melt pipeline secondary branch pipe 2-4-1, a second melt pipeline secondary branch pipe 2-4-2, a third melt pipeline secondary branch pipe 2-4-3, a fourth melt pipeline secondary branch pipe 2-4-4, a fifth melt pipeline secondary branch pipe 2-4-5 and a sixth melt pipeline secondary branch pipe 2-4-6 shown in fig. 10.

And, each melt pipeline branch pipe and the sum of the lengths of the corresponding melt branch pipes are limited to be a certain value. Specifically, referring to FIG. 10, the sum of the lengths of the first melt branch 2-1-1 and any melt line sub-branch connected thereto, and the sum of the lengths of the second melt branch 2-1-2 and any melt line sub-branch connected thereto, are equal. And two metering pumps 2-6-3 are respectively arranged on two sides of the longitudinal center line 2-b, because the lengths of the first melt branch pipe 2-1-1 and the second melt branch pipe 2-1-2 are equal, the lengths of all the sub-branch pipes of the melt pipelines are limited to be equal. The length of the branch pipe mentioned above means the extension length of the branch pipe, and also the melt path length in the branch pipe.

Therefore, the length limitation is combined with the double-row staggered arrangement of the spinning components 3 in the spinning box 2, so that the length difference of the corresponding pipelines in the box body is approximate to the minimum, the melt distribution of the spinning components 3 tends to be consistent, the spun filaments are more uniform, and the uniform drafting result is more favorably realized.

Optionally, referring to fig. 10, at least one of the melt line sub-branches connected to one metering pump 2-6-3 and at least one of the melt line sub-branches connected to the other metering pump 2-6-3 are both provided with a melt pressure sensor 2-7, and the melt pressure sensor 2-7 obtains information to realize real-time monitoring of the working state of the melt line sub-branch.

Referring to fig. 8 and 9, the manifold 2 includes an upper manifold 2-3-1 and a lower manifold 2-3-2 located below the upper manifold 2-3-1. FIG. 8 also shows that the upper spinning box 2-3-1 is provided with an upper spinning box heating medium inlet 2-9-1 and an upper spinning box heating medium outlet 2-9-2, and the lower spinning box 2-3-2 is provided with a lower spinning box heating medium inlet 2-10-1 and a lower spinning box heating medium outlet 2-10-2, which are respectively communicated with independently controllable heating medium systems, so as to realize independent temperature control of the upper spinning box 2-3-1 and the lower spinning box 2-3-2. The temperature of the upper spinning box 2-3-1 and the temperature of the lower spinning box 2-3-2 can be independently adjusted, the temperature of the upper spinning box 2-3-1 in the space is kept at a set temperature value through a heating medium, and then the melt in the melt pipeline pipe is kept at the set temperature; the lower spinning beam 2-3-2 maintains the temperature in its space at a set temperature value by means of a heating medium, which in turn maintains the melt of the assembly at the set temperature.

Through the independent temperature control of the upper spinning box 2-3-1 and the lower spinning box 2-3-2, in the production of polyester fine denier fiber spinning, the degradation of polyester fine denier melt is greatly reduced, the uniformity of the titer, crystallinity and orientation degree of finished yarn is ensured, the tensile property of the finished yarn is improved, the fiber strength and the elongation unevenness are reduced, and the spinning of high-quality polyester fine denier industrial filament is facilitated.

The heating medium can be heat conducting oil, which is beneficial to controlling the heating temperature and protecting the environment.

Furthermore, the upper spinning box 2-3-1 adopts relatively low temperature, so that the degradation of polyester is reduced as much as possible, and the conveying and distributing effects are achieved; the lower spinning box 2-3-2 adopts relatively high temperature, so that the apparent viscosity of the melt in the assembly is approximately consistent, the uniformity of the fineness, the crystallinity and the orientation degree of the finished yarn is ensured, the tensile property of the finished yarn is improved, and the fiber strength and the elongation irregularity are reduced.

Referring to fig. 8, each metering pump 2-6-3 is provided with a metering pump transmission part 2-11, and the metering pump 2-6-3 is required to have high precision metering accuracy, the metering pump transmission part 2-11 is driven by a permanent magnet synchronous motor direct connection cycloid pin gear reducer and is subjected to variable frequency speed regulation, each pump is driven independently, a transmission shaft can stretch out and draw back, and the transmission shaft is provided with a universal coupling and a safety pin protection device.

Referring to fig. 10, the outer edge of the spinning box 2 is further provided with a layer of insulation can 2-8, the spinning box 2 shown in the figure is a rectangular box, and the central space of the rectangular box is a working area. In addition, the spinning box 2 is designed to be airtight.

The spin pack 3 mounted in the manifold 2 of this embodiment can be a circular double chamber bottom mounted pack having two melt inlets and a spinneret with two sets of orifices.

Referring to fig. 10, the embodiment further provides a spinning manifold 2, wherein the value of n is 3, each row of spinning assemblies 3 includes 6 spinning assemblies 3 uniformly arranged, each metering pump 2-6-3 is connected to 6 spinning assemblies 3 through 12 sub-branch pipes of the melt pipeline, and the spinning manifold can spin 12 or 24 filaments for polyester fine denier industry.

Referring to fig. 9, the manifold 2 further includes a component seat 2-2, and the component seat 2-2 is used for mounting the spinning component 3; the installation of the metering pump 2-6-3 in the spinning manifold 2 specifically relates to the structures of a pump base 2-5, a pump pad 2-6-1, a pump plate 2-6-2, a soaking block 2-6-4 and the like shown in fig. 9, and the specific principle is consistent with the prior art and is not described herein again. It should be noted that, in the spinning drafting and winding combination machine, the arrangement direction 3-a of the two rows of spinning assemblies 3 in the spinning box 2 is parallel to the axial direction of the hot roller.

When the spinning box 2 is used for polyethylene terephthalate fiber in polyester fiber, PET fiber for short, PET chips are adopted to spin polyester fine denier industrial filaments, the upper spinning box 2-3-1 adopts a relatively low temperature method to reduce degradation of polyester as much as possible and play a role in conveying and distribution, and the set temperature of the upper spinning box 2-3-1 is 280-298 ℃, preferably 283-295 ℃, and further preferably 287 ℃. The lower spinning box 2-3-2 adopts relatively high temperature, so that the apparent viscosity of a melt in the spinning assembly 3 is approximately consistent, the fineness, the crystallinity and the uniformity of the orientation degree of the finished yarn are ensured, the tensile property of the finished yarn is improved, the fiber strength and the elongation unevenness are reduced, and the set temperature of the lower spinning box 2-3-2 is 290-300 ℃, preferably 293-298 ℃, and further preferably 295 ℃.

When the spinning box 2 is used for polybutylene terephthalate fiber in polyester fiber, also called PBT fiber, PBT slice is adopted to spin filament for polyester fine denier industry, the upper spinning box 2-3-1 adopts a relatively low temperature method to reduce degradation of polyester as much as possible and play a role in conveying and distributing, and the set temperature of the upper spinning box 2-3-1 is 280-298 ℃, preferably 285-293 ℃, and further preferably 286 ℃. The lower spinning box 2-3-2 adopts relatively high temperature, so that the apparent viscosity of the melt in the component is nearly consistent, the uniformity of the fineness, the crystallinity and the orientation degree of the finished yarn is ensured, the tensile property of the finished yarn is improved, and the fiber strength and the elongation irregularity are reduced. The set temperature of the lower manifold 2-3-2 is 290 ℃ to 300 ℃, preferably 292 ℃ to 296 ℃, and further preferably 293 ℃.

When the spinning box 2 is used for polytrimethylene terephthalate fiber in polyester fiber, also called PTT fiber, PTT chips are adopted to spin filaments for polyester fine denier industry, the upper spinning box 2-3-1 adopts a relatively low temperature method to reduce the degradation of polyester as much as possible and play a role in conveying and distributing, and the set temperature of the upper spinning box 2-3-1 is 280-298 ℃, preferably 287-293 ℃, and further preferably 289 ℃. The lower spinning box 2-3-2 adopts relatively high temperature, so that the apparent viscosity of the melt in the component is nearly consistent, the uniformity of the fineness, the crystallinity and the orientation degree of the finished yarn is ensured, the tensile property of the finished yarn is improved, and the fiber strength and the elongation irregularity are reduced. The set temperature of the lower manifold 2-3-2 is 290 ℃ to 300 ℃, preferably 293 ℃ to 298 ℃, and more preferably 296 ℃.

Example 7

The present embodiment further defines the spinning assembly 3 of the spinning apparatus based on the multifunctional filament spinning, drafting and winding combination machine for polyester fine denier industry of embodiments 1-6.

Referring to fig. 13 and 14 in combination, the present embodiment provides a spinning assembly 3, the spinning assembly 3 includes an assembly body 3-5, a gland 3-2, a melt distributing body 3-3 and a spinneret 3-4, which are sequentially disposed in an inner channel of the assembly body 3-5 along a melt flow direction, a distribution plate 3-13 is disposed at a terminal of the inner channel of the melt distributing body 3-3, the gland 3-2 is provided with at least two feed ports 3-11 which are parallel to each other, the melt distributing body 3-3 forms at least one inner channel, one end of the inner channel is communicated with the feed ports 3-11, and the other end is communicated with the distribution plate 3-13, so that the feed ports are communicated with the spinneret.

As shown in FIG. 13, the first row of graphs from left to right is provided with an inner channel communicated with two feed inlets 3-11, the second row of graphs and the third row of graphs are provided with two inner channels communicated with two feed inlets 3-11, respectively, the fourth row of graphs is provided with 4 inner channels, and the top ends of the two inner channels are communicated with one feed inlet 3-11.

Specifically, at least two feed inlets 3-11 are arranged on the gland 3-2, and the butt joint of the spinning assembly 3 and the spinning manifold can be still smoothly realized without changing the design of the feed inlets 3-11 of the gland 3-2 under the condition that the structure of the spinning manifold in the same equipment is unique. Please follow the four-column graph in fig. 13, the number of the inner channels from left to right of the melt distributor 3-3 is 1, 2 and 4, which correspond to 1-end filament, 2-end filament, 1-end composite spinning and 2-end composite spinning, respectively.

The number of the inner channels of the melt distributor 3-3 is set, the number of the inner channels of the melt distributor is set in a differentiated mode, the number of the spinning heads of the spinning equipment is adjusted in a mode of replacing the spinning assemblies 3 in the spinning box, the number of the spinning assemblies 3 does not need to be changed in the same equipment, the purpose of achieving different head numbers and compositing or not can be achieved only by replacing different spinning assemblies 3, and the multifunctional effect is achieved.

Optionally, referring to fig. 14, the inner channel of the melt distributor 3-3 further includes a ball layer 3-7, a sintered metal plate 3-8 and a multi-layer filter screen 3-9, and the ball layer 3-7, the sintered metal plate 3-8, the multi-layer filter screen 3-9 and the distribution plate 3-13 are sequentially disposed in the inner channel of the melt distributor 3-3 along the flow direction of the melt and in layers. The ball layer 3-7 can adopt stainless steel balls, the ball layer 3-7 and the sintered metal plate 3-8 can replace well-known sea sand, metal sand and a multi-layer filter screen 3-9, the filtering area and the volume of the sintered metal plate 3-8 are 50% more than those of the multi-layer filter screen 3-9, and the stainless steel balls are adopted for filtering to play a role in preventing the melt and the sea sand from rapidly agglomerating, so that the melt is more fully mixed in the inner channel of the melt distributor 3-3, the treatment time is prolonged, the uniform heat transfer is ensured, and the uniformity of the melt is improved.

Alternatively, referring to fig. 14, the spin pack assembly 3 includes a first sealing gasket 3-6, and the first sealing gasket 3-6 is disposed between the pressing cover 3-2 and the melt distributing body 3-3 to perform sealing at a contact portion of the pressing cover 3-2 and the melt distributing body 3-3.

Optionally, referring to fig. 14, the spin pack assembly 3 includes a second sealing pad 3-12, the second sealing pad 3-12 is installed at an inlet end of the feed inlet 3-11, and the second sealing pad 3-12 is configured to be pressed by the spin pack, which is equivalent to that two sides of the second sealing pad 3-12 are respectively pressed by the spin pack and the gland 3-2 of the spin pack assembly 3, thereby ensuring the tightness of the melt entering the spin pack assembly 3 from the spin pack.

Optionally, referring to the enlarged partial view of fig. 14, the spin pack assembly 3 further includes a third sealing pad 3-10, and the third sealing pad 3-10 is disposed between the melt distributor 3-3 and the spinneret 3-4 to ensure the sealing property at the position where the melt distributor 3-3 and the spinneret 3-4 are connected.

Optionally, referring to fig. 14, the spinning assembly 3 further includes a locking nut 3-1, an outer circumference of the locking nut 3-1 is in threaded connection with an inner side of the assembly body 3-5, and a bottom side of the locking nut 3-1 abuts against a plane of the gland 3-2; one side of the inner edge of the component body 3-5, which is far away from the locking nut 3-1, is provided with a limiting part 3-5-1, and the limiting part 3-5-1 is in concave-convex fit with the spinneret plate 3-4 so as to limit the spinneret plate 3-4 in the component body 3-5. The locking nut 3-1 is matched with the limiting part 3-5-1 to form a state that the gland 3-2, the first sealing gasket 3-6, the melt distributor 3-3, the third sealing gasket 3-10 and the spinneret plate 3-4 are sequentially tightened, and the components are firmly installed in the component body 3-5.

Optionally, referring to fig. 14, the top of the gland 3-2 is provided with bolt holes 3-2-1, the bolt holes 3-2-1 are arranged along the direction of the inner channel of the assembly body 3-5, the spinning assembly 3 of the scheme can adopt a bottom-mounted design, and the bolt holes 3-2-1 of the gland 3-2 are matched with mounting bolts in the spinning box to realize the mounting of the spinning assembly 3 in the spinning box.

When the scheme of the embodiment relates to composite spinning, please refer to fig. 15, the spinning assembly 3 further includes a manifold plate 3-14, the manifold plate 3-14 is disposed between the melt distributor 3-3 and the spinneret plate 3-4, the manifold plate 3-14 is provided with manifold chambers 3-14-1 equal to the number of the channels in the melt distributor 3-3, top openings formed in the top of the manifold plate 3-14 by the manifold chambers 3-14-1 are located at the lower edge of the distribution plate 3-13, the manifold chambers 3-14-1 correspond to the channels in the melt distributor 3-3 one by one, bottom openings formed in the bottom of the manifold plate 3-14 by the manifold chambers 3-14 are located at the upper edge of the spinneret plate 3-4, the top openings are relatively larger than the bottom openings, and the spinneret plates 3-4 are disposed in a multilayer manner. Corresponding channels are arranged in the multi-layer spinneret plates 3-4, so that two different melts from the two feed inlets 3-11 are mixed, and finally the composite filament bundle is sprayed out of the spinneret plates 3-4.

The opening at the top, which defines the manifold chamber 3-14-1, is relatively larger than the opening at the bottom, which is characterized by a reduced cross-section of the melt, so that the melt can smoothly enter the two entry slots in the uppermost layer of the multilayer spinneret 3-4.

In the composite spinning scheme, referring to fig. 15, the spinning assembly 3 is also provided with a third sealing gasket 3-10, and the third sealing gasket 3-10 is arranged between the melt distributor 3-3 and the bus plate 3-14 to complete sealing of the position.

Example 8

The present example further defines the spinning apparatus based on the multifunctional filament spinning drafting and winding combination machine for polyester fine denier industry of examples 1-7.

Referring to fig. 16, 18 and 19, the present embodiment provides a slow cooling air component 5, which includes a hot air box 5-2 and a hot air inlet pipe 5-1, one end of the hot air inlet pipe 5-1 is communicated with the hot air box 5-2 at the side of the hot air box 5-2, the other end is used for introducing hot air, the top of the hot air box 5-2 is used for being communicated with the slow cooler component 4, and the bottom is used for being communicated with the circular blowing cooling component 6.

Through ventilating the hot air box body 5-2, a slow cooling air area is formed in the hot air box body 5-2, and the slow cooling air area replaces an airless area between an original slow cooler part and a circular blowing cooling part. By continuously supplementing hot air to the hot air box body 5-2, the air flow disturbance and temperature fluctuation in a calm zone are greatly improved, and the spinning stability and the fiber uniformity are ensured.

On the other hand, slow cooling wind part 5 still plays certain slow cooling effect to the silk bundle that passes through, makes the silk bundle be unlikely to too fast cooling, compares in the natural wind form in original windless district, and this scheme has more effectual slow cooling effect. The slow cooling air component 5 provided by this embodiment improves the controllability of the spinning condition and the uniformity of the mechanical properties of the nascent fiber as a whole.

Optionally, referring to fig. 18 and 19, the slow cooling air component 5 further includes an integrated filter screen 5-3, the integrated filter screen 5-3 is installed in the hot air box body 5-2, the integrated filter screen 5-3 is arranged along a vertical section of the hot air box body 5-2, and the integrated filter screen 5-3 is transversely arranged between a nozzle of the hot air inlet pipeline 5-1 and a channel for the tows to pass through. The hot air passing through the integrated filter screen 5-3 plays roles of filtering and rectifying, and the formed slow cooling air area is further favorable for improving the beneficial effects of air flow disturbance and temperature fluctuation.

The connection of the hot air box body 5-2 and the intercooler component 4 and the connection of the hot air box body 5-2 and the circular blowing cooling component 6 are fixed connection and can adopt the modes of screw connection, bonding and the like.

Optionally, one end of the hot air inlet pipe 5-1 is used for introducing hot air, the hot air comprises hot air of a spinning floor, and a screw extruder and a part of a spinning box are arranged in the spinning floor. In detail, a general spinning apparatus is provided with 3 floors, a screw extruder is located at the uppermost floor, a slow cooling device 4, a circular blowing cooling device 6 and the like are located at the second floor, a spinning box is located between the uppermost floor and the second floor, and the spinning floors are relatively sealed environments, and a large amount of heat energy is generated by the screw extruder and the spinning box during operation. Hotter air in the spinning floor is pumped into a hot air inlet pipeline 5-1 and enters a hot air box body 5-2 after being filtered and rectified, so that the method has the effects of reasonably utilizing resources and reducing energy consumption, and is slightly beneficial to temperature control in the spinning floor.

Optionally, referring to fig. 18 in combination with fig. 19, the hot air box 5-2 includes a main body 5-2-1, a transition section 5-2-2 and a connector 5-2-3, the transition section 5-2-2 includes a large opening end and a small opening end respectively located at two opposite sides, the large opening end is communicated with the main body 5-2-1, the small opening end is connected with one end of the connector 5-2-3, and the other end of the connector 5-2-3 is communicated with the hot air inlet pipe 5-1. The reducing transition section 5-2-2 is arranged, so that the hot air inlet pipeline 5-1 is thin, hot air is conveyed conveniently, and the main body 5-2-1 of the hot air box body 5-2 is thick, so that a slow cooling air area with relatively large thickness is formed.

Optionally, the slow cooling air part 5 is used for producing the polyester fine denier industrial filament, the temperature of slow cooling air formed by hot air in the hot air box body 5-2 is 30-40 ℃, and the air speed is 0.3-0.7 m/min.

The slow cooling air device 5 provided in this embodiment can be used in a spinning apparatus for spinning a polyester fine denier industrial filament, and the above data will be further described in connection with the production of a polyester fine denier industrial filament.

PET (polyethylene terephthalate) slices are adopted to spin long yarns for polyester fine denier industry, the yarns are spun to be 33dtex to 111dtex, the slow cooling air speed is 0.3m/min to 0.7m/min, the preferred speed is 0.5m/min, and the temperature is 30 ℃ to 40 ℃; spinning 125dtex-333dtex, slow cooling wind speed 0.3m/min-0.7m/min, preferably 0.6m/min.

Adopting PBT (polybutylene terephthalate) slices to spin the filament for polyester fine denier industry, spinning 33dtex-111dtex, and controlling the slow cooling air speed to be 0.3m/min-0.7m/min, preferably 0.4m/min and the temperature to be 30-40 ℃; spinning 125dtex-333dtex, slow cooling wind speed 0.3m/min-0.7m/min, preferably 0.5m/min.

Spinning 33dtex-111dtex by using PTT (polytrimethylene terephthalate) slices and spinning polyester filament for fine denier industry, wherein the slow cooling air speed is 0.3m/min-0.7m/min, preferably 0.4m/min, and the temperature is 30-40 ℃; spinning 125dtex-333dtex, slow cooling wind speed 0.3m/min-0.7m/min, preferably 0.5m/min.

As shown in fig. 16, the spinning device comprises a slow cooler part 4, a slow cooling air part 5 and a circular blowing cooling part 6 which are connected in sequence, and a passage for the tows to pass through is formed by the slow cooler part 4, the hot air box body 5-2 of the slow cooling air part 5 and the circular blowing cooling part 6 together.

Alternatively, referring to fig. 17, the slow cooler device 4 includes an upper slow cooler 4-1, a lower slow cooler 4-4, and a first heat insulation pad 4-7 disposed between the upper slow cooler 4-1 and the lower slow cooler 4-4, and the upper slow cooler 4-1 and the lower slow cooler 4-4 are configured to regulate temperatures, respectively. Therefore, the temperature of the upper intercooler 4-1 and the temperature of the lower intercooler 4-4 can be respectively adjusted, and the mutual influence of the temperature of the upper intercooler 4-1 and the temperature of the lower intercooler 4-4 is improved through the first heat insulation pad 4-7. The upper slow cooler 4-1 and the lower slow cooler 4-4 are at different slow cooling temperatures, so that the slow cooling effect on the tows is more facilitated.

The slow cooling device part 4 is arranged to reduce the orientation degree of the nascent fiber, reduce the influence of a sheath-core structure and improve the draft multiple of the nascent fiber, thereby improving the mechanical property of the terminal fiber. The operating temperatures of the upper and lower annealers 4-1 and 4-4 are illustrated below based on the spinning of polyester fine denier industrial filaments.

Spinning 33dtex-111dtex filament for polyester fine denier industry by adopting PET slices, wherein the temperature of an upper slow cooler 4-1 is set to be 250-300 ℃, preferably 280 ℃, and the temperature of a lower slow cooler 4-4 is set to be 250-300 ℃, preferably 270 ℃; the temperature of the slow cooler 4-1 on the spinning (125 dtex-333 dtex) is set to 250-300 ℃, preferably 288 ℃, and the temperature of the slow cooler 4-4 is set to 250-300 ℃, preferably 275 ℃.

Adopting PBT slices to spin polyester filaments for fine denier industry, setting the temperature of an upper slow cooler 4-1 of 33dtex-111dtex to be 250-300 ℃, preferably 282 ℃, and setting the temperature of a lower slow cooler 4-4 to be 250-300 ℃, preferably 272 ℃; the temperature of an upper slow cooler 4-1 of the spinning (125 dtex-333 dtex) is set to be 250-300 ℃, preferably 287 ℃, the temperature of a lower slow cooler 4-4 is set to be 250-300 ℃, preferably 274 ℃,

the PTT slices are adopted to spin the filaments for the polyester fine denier industry, the temperature of an upper slow cooler 4-1 of a 33dtex-111dtex spinning machine is set to be 250-300 ℃, preferably 282 ℃, and the temperature of a lower slow cooler 4-4 is set to be 250-300 ℃, preferably 269 ℃; the temperature of the upper slow cooler 4-1 of the spinning (125 dtex-333 dtex) is set to be 250-300 ℃, preferably 284 ℃, and the temperature of the lower slow cooler 4-4 is set to be 250-300 ℃, preferably 271 ℃.

Optionally, a heat-insulating layer is arranged outside the upper intercooler 4-1 and the lower intercooler 4-4, and the temperature change in the upper intercooler 4-1 and the lower intercooler 4-4 is slow through the heat-insulating layer, so that the temperature uniformity is ensured, and the heat energy loss is reduced.

Referring to fig. 17, an upper intercooler heating coil 4-2 is arranged on an upper intercooler 4-1, and an upper intercooler front temperature measuring element 4-3a and an upper intercooler rear temperature measuring element 4-3b are respectively arranged on both sides of the upper intercooler, and the temperature measuring elements are connected with a temperature control cabinet, so that the temperature of the upper intercooler 4-1 can be automatically controlled. Correspondingly, a lower intercooler heating coil 4-5 is arranged on the lower intercooler 4-4, a lower intercooler front temperature measuring element 4-6a and a lower intercooler rear temperature measuring element 4-6b are respectively arranged on two sides of the lower intercooler, and the temperature measuring elements are also connected with a temperature control cabinet, so that the temperature of the lower intercooler 4-4 can be automatically controlled.

Optionally, referring to fig. 16 and 20, second heat insulation pads 6-10a, 6-10b are installed between the hot air box 5-2 and the circular air-blowing cooling component 6, the second heat insulation pads 6-10a, 6-10b surround the passage for the tows to pass through, and the heat insulation treatment of the hot air box 5-2 and the circular air-blowing cooling component 6 is performed through the second heat insulation pads 6-10a, 6-10 b.

Referring to fig. 20, the circular blowing cooling part 6 may be configured as a double-row circular blowing cooling part 6; the circular blowing cooling part 6 comprises an air duct 6-7 for air intake, a filtering combined perforated plate and filter screen assembly 6-8 transversely arranged in the air duct, a filtering drawer 6-9 arranged on the air duct 6-7, an air inlet box 6-6 connected with the air outlet end of the air duct 6-7, a circular blowing box 6-4 positioned above the air inlet box 6-6 and communicated with the air inlet box 6-6, and a horizontal perforated plate and filter screen assembly 6-5 positioned at the joint of the air inlet box 6-6 and the circular blowing box 6-4; the interior of the circular blowing box 6-4 is provided with double rows of channels for the tows to pass through, specifically, the interior of the circular blowing box 6-4 is provided with a front row of high-density non-woven fabrics 6-3a, a front row of circular porous plates 6-1a and a front row of combined filter screens 6-2a which are sequentially arranged from outside to inside as shown in fig. 20, and the interior of the circular blowing box 6-4 is provided with a rear row of high-density non-woven fabrics 6-3b, a rear row of circular porous plates 6-1b and a rear row of combined filter screens 6-2b which are sequentially arranged from outside to inside as shown in fig. 20.

For example, the front row of circular porous plate 6-1a, the front row of combined filter screen 6-2a and the front row of high-density non-woven fabric 6-3a form a circular blowing cylinder, and the front row of circular porous plate 6-1a can adopt sintered metal by coating the high-density non-woven fabric 6-3a outside the front row of circular porous plate 6-1 a. The circular blowing adopts cooling air with the temperature of 18-25 ℃, and the air supply system provides stable and clean cooling air for the circular blowing device to effectively control the structural uniformity of the polyester fine-denier nascent fiber passing through the slow cooling air part 5, thereby improving the spinnability and the processing performance of the polyester fine-denier nascent fiber. The circular blowing cylinder with the damping material can ensure even wind speed and stable wind pressure, and tows surrounded by cold air are slowly cooled.

The circular blow cooling part 6 forms a large effective blow height. In the production of the polyester fine denier industrial filament, the viscosity of the polyester fine denier melt is large, so the spinning process requirement is severe compared with that of common chemical fiber, the embodiment provides a practical scheme that a channel for the tow to pass through comprises a main air duct positioned in a circular air blowing cooling part 6, the gauge pressure of the main air duct is 600-1000pa, preferably 800pa, and the absolute pressure of the gauge pressure is the sum of atmospheric pressure and gauge pressure of 600-1000 pa; the selection range of the air temperature of the main air duct is 18-25 ℃, actual errors of +/-1 ℃ are configured, specifically, any temperature value of 18-25 ℃ can be selected for the air temperature, and fluctuation of 1 ℃ up and down is allowed; the wind speed irregularity of the main air duct is less than or equal to +/-3 percent; the relative humidity of the main air duct is 85 +/-5%; the wind speed of the main wind channel is 0.4-0.8m/s.

Alternatively, the circular-blowing cooling part 6 is supplied with a stable, clean cooling wind by the air conditioning system. The above data are further explained, which specifically includes the following steps:

spinning 33dtex to 111dtex by using PET slices and spinning polyester filament for fine denier industry, wherein the air speed of circular blowing is 0.3m/min to 0.7m/min, preferably 0.4m/min, the relative humidity is 75 +/-5%, and the temperature is 19-25 ℃, preferably 21 ℃; spinning 125dtex-333dtex, wherein the air speed of circular blowing is 0.3m/min-0.7m/min, preferably 0.6m/min, the relative humidity is 78 +/-5%, and the temperature is 19-25 ℃, preferably 20 ℃.

Adopting PBT slices to spin the filament for polyester fine denier industry, spinning 33dtex-111dtex, and blowing air speed of 0.3m/min-0.7m/min, preferably 0.3m/min, relative humidity of 77 +/-5%, temperature of 19-25 ℃, preferably 22 ℃; spinning 125dtex-333dtex, wherein the air speed of circular blowing is 0.3m/min-0.7m/min, preferably 0.4m/min, the relative humidity is 77 +/-5%, and the temperature is 19-25 ℃, preferably 21 ℃.

PTT slices are adopted to spin the filament for the polyester fine denier industry, 33dtex to 111dtex is spun, the air speed of circular blowing is 0.3m/min to 0.7m/min, preferably 0.35m/min, the relative humidity is 78 +/-5 percent, the temperature is 19 ℃ to 25 ℃, and preferably 22 ℃; spinning 125dtex-333dtex with the air speed of circular blowing of 0.3m/min-0.7m/min, preferably 0.45m/min, the relative humidity of 78 plus or minus 5%, the temperature of 19-25 ℃, preferably 21 ℃.

The technical problem that the temperature of the melt cannot be controlled independently is solved by arranging an upper spinning box and a lower spinning box which can control the temperature independently, the temperature of the two boxes can be adjusted independently, the degradation of different polyester fine-denier melts is reduced greatly, the fineness, the crystallinity and the uniformity of orientation of finished yarns are ensured, the tensile property of the finished yarns is improved, and the fiber strength and the elongation unevenness are reduced. Meanwhile, the double rows of components are arranged in a staggered manner, so that the number of the components is doubled compared with the number of the components in the conventional layout, the number of the ends of the tows is increased, the yield is improved, and the slow cooling device is adopted to rapidly cool the fine flow refining areas of different polyester melts, so that the improvement of the orientation uniformity and the orientation degree of the strand silk during stretching are facilitated, the crystallinity of the nascent fiber is well controlled, and the difference of the nascent fiber is reduced. The slow cooling air part is adopted, hot air of a spinning floor is sucked in according to the principle of energy conservation and emission reduction, a section of hot air is in transition between the slow cooler and the cooling circular air blower, the filament bundle is prevented from being cooled too fast, the introduced hot air can reduce energy consumption and can provide a more effective slow cooling effect on the filament bundle than natural air, the spinning working condition is controllable, and the uniformity of the mechanical property of nascent fibers is improved. The double rows of circular air blowing cooling components are used for cooling each bundle of wires in a refining mode, so that each bundle of wires is prevented from being interfered by the external environment temperature and the wind direction, and stable and clean cooling air is obtained. The physical properties of the fiber finished product, the processing performance of the finished fiber and the related technical indexes of the fiber can be directly influenced. Double-oil tanker oiling can effectively avoid the defect that single oiling brings uneven oiling. Making the tow have beaming property; and a good oil film is formed during hot drawing, so that the friction force among monofilaments and between a tow and a godet is reduced, the phenomenon of broken filaments is prevented, and the broken ends are reduced. Meanwhile, the staggered arrangement enables the filament bundles to be sequentially and orderly arranged on the drafting hot roller, the filament separation and the winding are clear, the condition that each bundle of filaments is heated, stretched and relaxed to be shaped consistently is ensured, and different polyesters adopt different drafting and shaping temperatures and different drafting ratios of rollers, so that the physical indexes of different polyesters, such as strength, modulus, elongation, dry heat shrinkage, and the like are formed in the technical process of tensioning, stretching orientation, stretching crystallization, shaping, drafting and winding equipment. Due to enough hot rollers, the temperature of the filament bundle can be gradually and stably increased, and the gradual orientation and crystallization of fibers are facilitated, so that different mechanical properties of polyester are achieved. Thereby being capable of stably producing 12-24 different varieties of differentiated polyester (PET, PBT, PTT) fine denier industrial filaments.

By adopting three raw materials of PET, PBT and PTT in polyester and adopting a 12-24-head spinning multifunctional technology, the production efficiency is improved, the cost is reduced, the energy consumption is reduced, meanwhile, the product quality, the uniformity and the dyeing property are improved by adopting a novel multifunctional technology, and the requirements of the market on differentiation, high-grade and individuation are met.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The multifunctional filament spinning, drafting and winding combination machine for the polyester fine denier industry is characterized by comprising a spinning device and a drafting and winding device which is arranged in parallel with the spinning device;

the drafting and winding device comprises an oiling mechanism, a pre-networking device, a feeding roller, a yarn dividing roller, a first pair of low-temperature hot rollers, a second pair of high-temperature drafting hot rollers, a third pair of high-temperature drafting hot rollers, a fourth pair of drafting and shaping hot rollers, a fifth pair of drafting and shaping hot rollers, a guide disc, a final networking device and a winding head which are sequentially arranged according to a production process;

the spinning device is used for producing any one of PET tows, PBT tows and PTT tows and conveying the tows to the oiling mechanism.

2. The combination spin draw-winding machine according to claim 1, wherein the speed of the feed roller and the dividing roller is 550 to 650m/min;

the temperature of the first pair of low-temperature hot rollers is set to be 65-90 ℃, the speed is 577-683m/min, and the first pair of low-temperature hot rollers, the feeding roller and the yarn separating roller are kept at a speed of 1.05: a speed ratio of 1;

the temperature of the second pair of high-temperature drawing hot rollers is set to be 130-160 ℃, the speed is 1443-2390m/min, and the drawing multiple of the second pair of high-temperature drawing hot rollers and the first pair of low-temperature hot rollers is 2.5-3.5 times;

the temperature of the third pair of high-temperature drafting hot rollers is set to be 140-220 ℃ and the spinning speed is 2900-4200m/min, and the drafting multiple of the third pair of high-temperature drafting hot rollers and the second pair of high-temperature drafting hot rollers is 1.2-2.5 times;

the temperature of the fourth pair of drafting and shaping hot rollers is set to be 160-240 ℃ and the spinning speed is 2800-3900m/min, and the drafting multiple of the fourth pair of drafting and shaping hot rollers and the third pair of high-temperature drafting hot rollers is 0.92-0.98 times;

the temperature of the fifth pair of drawing and shaping hot rollers is set to be 200-250 ℃, the spinning speed is 2750-3800m/min, and the drawing multiple of the fifth pair of drawing and shaping hot rollers and the fourth pair of drawing and shaping hot rollers is 0.92-0.98 times.

3. The spinning, drawing and winding combination as recited in claim 2 wherein the speed of the feed roll and the splitting roll is 580m/min, the temperature of the first pair of low temperature hot rolls is 80 ℃ and the speed is 609m/min, the temperature of the second pair of high temperature drawing hot rolls is 140 ℃ and the speed is 1827m/min, the temperature of the third pair of high temperature drawing hot rolls is 220 ℃ and the speed is 3654m/min, the temperature of the fourth pair of drawing and shaping hot rolls is 240 ℃ and the speed is 3581m/min, and the temperature of the fifth pair of drawing and shaping hot rolls is 240 ℃ and the speed is 3502m/min when the tow formed by the spinning device using PET chips enters the oiling mechanism.

4. The spinning, drawing and winding combination as recited in claim 2, wherein the speed of the feeding roller and the dividing roller is 570m/min, the temperature of the first pair of low temperature hot rollers is 85 ℃ and the speed is 599m/min, the temperature of the second pair of high temperature drawing hot rollers is 145 ℃ and the speed is 1736m/min, the temperature of the third pair of high temperature drawing hot rollers is 220 ℃ and the spinning speed is 3472m/min, the temperature of the fourth pair of drawing and shaping hot rollers is 235 ℃ and the spinning speed is 3367m/min, and the temperature of the fifth pair of drawing and shaping hot rollers is 240 ℃ and the spinning speed is 3232m/min when the filament bundle formed by the PBT slice enters the oiling mechanism.

5. The combined spin draw-winding machine of claim 2, wherein the speed of the feed roll and the splitting roll is 565m/min, the temperature of the first pair of low temperature hot rolls is 75 ℃ and the speed is 594m/min, the temperature of the second pair of high temperature draw hot rolls is 135 ℃ and the speed is 1839m/min, the temperature of the third pair of high temperature draw hot rolls is 225 ℃ and the spinning speed is 3678m/min, the temperature of the fourth pair of draw shaping hot rolls is 230 ℃ and the spinning speed is 3531m/min, and the temperature of the fifth pair of draw shaping hot rolls is 235 ℃ and the spinning speed is 3460m/min when the tow formed by PTT chips is fed into the oiling mechanism.

6. The spinning draft winding combination according to claim 1, wherein said draft winding means further comprises:

the first yarn guide wheel and the second yarn guide wheel are respectively arranged in front of and behind the pre-interlacer according to the yarn bundle paths;

a third filament guide arranged between the feeding roller, the filament separating roller and the first pair of low-temperature hot rollers according to a filament bundle path; and

and the fourth yarn guide is arranged between the guide disc and the final yarn guide according to a yarn bundle path.

7. The spinning, drafting and winding combination machine according to any one of claims 1 to 6, wherein the spinning device comprises a screw extruder, a screw of the screw extruder comprises a feeding section, a compression section and a metering section which are connected in sequence, the metering section comprises a first metering section, a second metering section, a third metering section and a conical torpedo head which are connected in sequence, the first metering section is connected with the compression section, a plurality of straight grooves are formed at the bottoms of the grooves of the first metering section, the length direction of the straight grooves is the same as the axial direction of the screw, the second metering section is arranged in an equidistant thread manner, and diamond blocks are uniformly arranged on the periphery of the third metering section to form splines.

8. The spinning draft winding combination according to any one of claims 1 to 6, wherein the spinning device includes a spinning beam, the horizontal section of the spinning beam includes a transverse center line along the length direction and a longitudinal center line perpendicular to the transverse center line, the spinning beam includes two rows of spinning units, the two rows have the same arrangement direction, the transverse center line direction and the axial direction of the hot roller in the drawing and winding device in which the spinning beam is disposed are all parallel, the two rows are formed with a stacking direction parallel to the longitudinal center line direction, the spinning units in the two rows are arranged in a staggered manner in the transverse center line direction, and the distance between two adjacent spinning units in one row is not less than the outer diameter of the spinning units.

9. The spinning, drafting and winding combination machine as claimed in any one of claims 1 to 6, characterized in that the spinning device further comprises a spinning assembly, the spinning assembly comprises an assembly body, a gland, a melt distributing body and a spinneret, which are arranged in the inner channel of the assembly body in sequence along the flow direction of the melt, a distribution plate is arranged at the end of the inner channel of the melt distributing body, the gland is provided with at least two feed inlets which are mutually juxtaposed, the melt distributing body forms at least one inner channel, one end of the inner channel is communicated with the feed inlets, and the other end of the inner channel is communicated with the distribution plate.

10. The spinning, drafting and winding combination machine according to any one of claims 1 to 6, wherein the spinning device comprises a screw extruder, a spinning box, a spinning assembly, a slow cooling device, a circular blowing and cooling device and a duct, which are arranged in sequence according to the production process, the slow cooling device comprises a hot air box body and a hot air inlet pipeline, the top of the hot air box body is communicated with the slow cooling device, the bottom of the hot air box body is communicated with the circular blowing and cooling device, one end of the hot air inlet pipeline is communicated with the hot air box body at the side part of the hot air box body, and the other end of the hot air inlet pipeline is used for introducing hot air.