CN1021065C - Vacuum spinning of fasciafed yarn from fibre strip - Google Patents

Abstract

The fasciated yarn comprises vacuum spun yarn consisting of fibers including core fibers and wrapper fibers, the wrapper fibers being predominantly individual fibers although having some groups of wrapper fibers. The groups of wrapper fibers appear as non-uniform, non-consistent groups and provide a relatively smooth appearance. The wrapper fibers are wrapped at a helix angle of about 30.degree, and about 20-30 percent of the fiber mass comprises the wrapper fibers. Initial threading of the vacuum spinning apparatus is provided by a vacuum tube mounted for rotation about an axis parallel to and spaced from the axis of rotation of the shaft, the vacuum tube being connected up to a vacuum reservoir and source of vacuum and rotatable from an inoperative to an operative position.

Description

Vacuum spinning of fasciafed yarn from fibre strip

The present invention relates to a kind of vacuum resultant yarn equipment, particularly relate to a kind of direct equipment by ribbon vacuum spinning wrapped yarn.

Up to date, ring spinning apparatus accounts for 90% of all spinning equipments.Yet, there are several new high-speed spinning process to use recently, comprise open-end spinning, friction-type spinning, open-core type spinning and air-jet spinning.But, by the suitability for industrialized production system that these new technologies form, do not have a kind ofly can successfully produce long fibered yarn, particularly successfully produce the fabric yarn that is suitable for doing dress material.Yet vacuum is spun to produce and is suitable for doing the long fibered yarn that the dress material fabric is used, and its performance approaches ring spun yarn.

Vacuum is spun than common RING SPINNING many advantages.Its productivity ratio be at least suitability for industrialized production ring spinning 6-8 doubly.Except productivity ratio increases, the performance of yarn more is connected to the performance of ring spun yarn than open-end spinning and air-jet spinning.It is few to produce the power that power ratio that every pound of yarn consumed uses compressed-air actuated air-jet spinning to consume.Vacuum spinning also is suitable for automatic joint, automatic tight knot, automatically adaptive, produce big finished product package, and use big yarn feeding package (as 25 pounds bar tube), long stapled number wide ranges, for 55% terylene, the long fibered yarn of 45% wool, the number scope is at least 1/8 ' S-1/6 ' S, for the long fibered yarn of 100% wool, the number scope is at least 1/8 ' S-1/40 ' S.It is lower than the ring spinning production labour cost that every pound of yarn consumed.

No. 4507913 disclosed apparatus and method of the applicant's United States Patent (USP) can be produced performance and the approaching yarn of ring spinning effectively, and with higher speed production.The basic fundamental of this patent is a vacuum spinning, and it is compared with ordinary skill and has many good qualities.Therefore but the diameter of the axis hole shown in it is thick-and-thin, does not propose a cavity that has enlarged and is communicated with said through hole, and the present invention is actually the improvement project to this patent.

In the Czech patents document of CS143050, the top shape such as the funnel of its inlet device, but the penetrating via that is communicated with through hole is shown as fixing diameter in its Fig. 1, or is shown as a diameter that slightly amplifies in its Fig. 3, and said through hole applies vacuum action through this passage.The document be provided with demonstrate said through hole with the device entrance point expansion cavity directly be communicated with.Moreover in above-mentioned document, rove or strip are fed into a revolving part by a Tapered Cup, and this revolving part can be connected with vacuum source by pipeline.When allowing said strip to rotate freely in taper import department, the purpose of this structure is that the yarn bundle is clamped in the gap of straining roller to produce actual afterturn in yarn; When obtaining actual afterturn, the yarn in revolving part is pulled to one side of revolving part and is close to basically on the wall of revolving part, and like this, all ribbon all obtains actual afterturn.And in the present invention, have at least the fiber of 20-40% will be in the core of finished product yarn, have only those free ends twining yarn core by the fiber that vacuum action moved.Consequently obtain a kind of yarn that is different from actual afterturn in the above-mentioned patent documentation.Even the effect of yam surface also is different.

Must be increased to greatest extent from the air flow that head end goes to vacuum source in the present invention, also will be conditional path of mobile outfit of ribbon simultaneously, because the effect of vacuum, ribbon is sucked out outside the axle 30 to prevent.Above-mentioned document US 4507913 and CS143050 are provided with a such cavity and connection of direct and said through hole of having amplified at the fiber entrance point.

Other advantages of the present invention are as follows: this technology high draw ratio (as 10-80) that suits, can produce long fibered yarn and short fibre yarn through regulating.And yarn can have " S " or " Z " to pick up.It also can produce a lot of other novel peculiar yarns.This device is simple, easy to maintenance, can control noise by vavuum pump is isolated to install, thereby guarantees to meet employment security and health care regulations (OSHA) regulation.This device processing cleaning, because of vacuum can be got rid of flyings automatically, and other foul and oily dirt can access to plant inside, because the effect that the preventing of draw zone breaked end, refuse yarn reduces, and because of there not being tension force in the yarn, compares with ring spinning, broken end reduces 400%, and the knot of picking up of broken end can be finished by minimum operating personnel.Can use the greater weight ribbon and operate as normal, as single thread 55 grains, and commonsense method is only limited to the 35-40 grain, can also and use bigger ozzle by the lengthening draw zone, processes carpet yarn.

Although require uniform stainability, and yarn steaming is easy to realize, can not make yarn steaming for most of blended yarns and handle.

Yarn produced according to the invention comprises core fibre and wrapper fibre.Wrapper fibre mainly is made of single fiber, also has the some fibre bundle, and these fibre bundles look like uneven, and are inconsistent, its surperficial smoother.On the other hand, core fibre basically with wrapper fibre direction consistent, the produced according to the invention yarn of looping around it, be essentially different with common ring spinning although outward appearance resembles common ring spun yarn very much.For example it is than the cladded yarn in the prior art, open-end spinning, and the Mang Saier air-jet spinning, eastern beautiful yarn or DREF II type yarn are more near ring spun yarn.

As previously mentioned, yarn of the present invention, its core fibre are the direction unanimity basically.Wrapper fibre be evenly distributed in core fibre around.Wrapper fibre helical angle of looping around core fibre is approximately 30 ° of wrapper fibres in the ribbon and accounts for 20-30%.

Wrapped yarn of the present invention also can be described as a kind of yarn that is formed yarn core by the fiber of direction unanimity basically that has, have the wrapper fibre that twines yarn core with 30 ° of-50 ° of helical angles, and wrapper fibre is answered the aptychus folding and is oppositely curled up, and essentially no helically twisted state, and smooth in appearance.

Wrapped yarn of the present invention can be by the major part of non-thermoplastic fiber as the fiber that forms yarn core and cladding.The Main Ingredients and Appearance of core fibre and wrapper fibre can be selected cotton, hair, artificial silk for use, mohair, flax, peaceful fiber crops, silk and their blend fibre, wrapped yarn of the present invention in addition also can select for use a thermoplastic fibres part or whole to constitute, as polypropylene, polyester and other thermoplastic fibre or their blended fiber.

Yarn of the present invention has unexpected and gratifying intensity.For example the yarn that props up by 45% terylene of the present invention and 55% wool blended 1/18 ' S has the fracture strength at least about 5500 grams.The yarn that 1/18 ' S of the wool by of the present invention 100% props up has the fracture strength at least about 175 grams.Therefore the yarn of being made by 100% wool according to the present invention also is suitable for making clothing cloth.

Equipment that the application proposes and method have the general vacuum of mentioning previously and spin identical basically advantage.

When the objective of the invention is to adopt rove to produce wrapped yarn, can constitute the ozzle of vacuum spinning equipment with more simple and favourable mode, by an interior shape is that conical vacuum chamber replaces cylindrical vacuum chamber, processes more conveniently, and can produce the higher yarn of fracture strength.

Another object of the present invention is also very convenient from sliver to yarn spinning.The present invention by strip spinning, and obtains good strength characteristics for directly, adopts a kind of special ozzle.Its inner chamber is generally taper shape.Be generally wedge shape with the through hole of intracavity inter-connection.The diameter of the axle internal channel of the internal channel of axle between the diameter that approaches head end and inner chamber and shaft tail end is compared many greatly, and its shape can be the nose cone shape of abscissusing.The space of inner chamber will be even as big as making the fiber freely-movable, like this fiber will be holded up by air-flow and more firmly looping around the core of ribbon.But the space of inner chamber again can not be excessive, in order to avoid fiber is by the formed suction inspiration of vacuum through hole.The head end of through hole and axle and the channel sized between the throughhole portions should guarantee that best looping action is achieved.That is to say.Its inner space will be flow through even as big as allowing enough air, and does not influence best looping action, uses this quadrat method, and best looping process can realize under any given condition.

Although vacuum spinning is easy and simple to handle, but when spinning beginning, fiber is drawn passage and delivered to but some difficulty of spooler, this process can not be finished fully automatically, and in the past be by using a lead that fiber is penetrated passage, then with wrapped yarn on winding off spindle or on the similar spooler. always

Method and apparatus provided by the invention can make fiber pass elongated passage easily during beginning.Feeding fiber at first according to the present invention is to finish semi-automatedly by a vacuum tube is high efficiency.This straight blank pipe can rotate with respect to vacuum tank.A position is movably to second end of vacuum tube from first position to the second.Primary importance, promptly the non-operative position is closed at this position blow vent.Second position, promptly the operating position is opened at this position blow vent.First end by vacuum tube makes vacuum tank be in vacuum state like this, and the rotation of vacuum tube is generally parallel with the rotation of the slender axles of spinning apparatus.When vacuum tube forwarded second position to and is the operating position, first end of vacuum tube was immediately near the hollow shaft tail end of spinning apparatus, attract fiber by axle whole passage and pass the tail end of axle.When the second place was rotated, the application specific device cooperated the vacuum of cutting off elongated hollow axle outside at vacuum tube.

The embodiment the description of the drawings is as follows:

Fig. 1 is that 70 of vacuum spinning of the present invention shows little enlarged photograph.

Fig. 2 is that 35 of the yarn identical with Fig. 1 shows little enlarged photograph.

Fig. 3 to Fig. 8 is the micro-enlarged photograph of the yarn made of other common spinning system, comprises ring spinning, Mang Saier air-jet spinning, eastern beautiful yarn and DREF II type yarn.

Fig. 9 is the side view of the embodiment of equipment of the present invention, has represented the part relevant with vacuum source and feeding roller.

Figure 10 is the cutaway view of embodiment that is used for " ozzle " of equipment shown in Figure 9.

Figure 11～Figure 18 is the cutaway view that can be used for the example of other ozzles in the vacuum spinning operation.

Figure 19 is the front view of conventional vacuum spinning equipment, and it has represented the vacuum tube in the equipment under the off position and the relation of vacuum spinning equipment.

Figure 20 is the cutaway view vertically of embodiment of elongated hollow axle of the vacuum spinning equipment of standard, and it has represented the relation between the axle of first end of vacuum tube of the present invention under off working state and vacuum spinning equipment.

Figure 21 is the front view of Figure 19 and yarn withdrawal device shown in Figure 20.

Figure 22 is the decomposition view of device shown in Figure 21.

Figure 23 is the vertical view of Figure 21 and device shown in Figure 22, and this device is installed on the vacuum spinning device shown in Figure 19.

Basic vacuum spinning device 14 shown in Fig. 9 is similar to the device shown in the United States Patent (USP) 4507913.This device 14 comprises a shell 16, and it is by metal, and materials such as pottery are made.Link to each other with vacuum source 18 by a built-up joint 17 down in working order, vacuum source can be vavuum pump.This vavuum pump is when 19 cubes of Foot/shunt volume, and mercury pressure is 20 inches.The inside of this shell 16 is hollow, installs 14 ozzle inside by reference number 20 expressions, and it comprises head end 21 and tail end 22.Will put a gear 24 at tail end 22 places, it links to each other with other gear (not shown), rotates thereby drive " ozzle " 20.It can rotate by clockwise or counterclockwise two directions, and Z picks up or S picks up thereby form as required.

From drafting system (not shown) slot of ribbon S by 26 of feeding rollers that come out, the yarn Y that processes is come out by the tail end 22 of device 14.

Directly by the detailed structure of " ozzle " 20 of fiber production yarn as shown in figure 10, ozzle 20 is made of an elongated hollow axle 30 that has head end 21 and tail end 22 in the present invention.22 have an elongated passage from head end 21 to tail end.This passage consists of the following components, near the passage first 31 of head end 21, near head end 21, and the inner chamber 32 that separates with head end 21,22 the third part 33 from inner chamber 32 1 through to tail end, as shown in figure 10, the diameter at third part 33 places is 1/16 inch.The diameter of this part is essentially constant.

Protruding for ad hoc bearing 35,36, one collar flanges 37 of hollow shaft rotatably are installed in shell 16 by axle 30, and with axle be one, and adjacent with tail end 22, bearing 36 is close on the flange 37.The outer surface 38 and the gear 24 of axle 30 are tight fit, drive axle 30 rotations to guarantee gear 24.

Mainly be suitable for directly spinning at the axle 30 shown in Figure 10, rather than spin by rove by strip.Reduced the relevant devices in the rove spinning process like this.So directly a lot of advantages is arranged by the strip spinning.Have now found that, need to amplify from head end 21 to vacuum source 18 air flow, meanwhile, the path that the restriction ribbon moves, because the effect of vacuum, fiber is sucked out outside the axle 30 to prevent.In specific embodiment shown in Figure 10, amplifying air flow is that this realizes, promptly increases the first 31 of passage.The size that makes this part is morely greater than passage third part 33.Total effective flow area of through hole 40 and effective flow area of passage first 31 are complementary, and reach best fiber looping effect with this.

The cross section at channel part 31 places is the garden tee section substantially, and in the embodiment shown in Figure 10, the diameter of channel part 31 is about 0.387 inch, and this part external diameter of hollow shaft 30 is at least about 0.5 inch.The mid portion 32 of this passage is a taper, this shape is substantially positive taper, there is bigger space at 32 places, fiber is inside moved freely, in by ribbon spinning yarn Y, make fiber can be holded up and come the looping yarn core with sizable one section, to ad hoc structure shown in Figure 10, channel part 31,32 can be processed by following method.

-use No. 41 centre drills, in head end 21 places centering boring, brill is about 0.51 inch deeply.

-use 15/64 inch drill bit, at head end 21 places, centering boring once more, brill is about 0.497 inch deeply.

-use 1/4 inch end mill(ing) cutter, at head end 21 places, centering processing once more, working depth is about 0.42 inch.

-use 3/8 inch 60 ° countersunk head drill bit, at head end 21 places, centering boring once more is deep to 0.52 inch.

The processing at channel part 33 places is only holed 22 end place centerings with 1/16 inch drill bit and is finished, the channel part 32 that directly gets into and have through hole communicates, other of axle 30 is of a size of: spacing 42 is about 3/8 inch, the diameter of head end 22 is about 0.503 inch, the thickness of flange 37 is about 0.125 inch, the diameter that matches with bearing 36 is about 0.501 inch, 30 from head end 21 to flange about 1.5625 inches of 37 length.

Should note between channel part that has hole 40 and channel part 33, being the taper wall, by reference number shown in Figure 10 44 expressions.This taper wall structure and same shape do not have a taper wall axle 30 compare, can cause a goodish effect.

Hole count for through hole 40 embodiment illustrated in fig. 10 is preferably 4, and will be evenly distributed on the outer surface of axle 30.Each through hole 40 is generally wedge shape.On axle 30 outer surfaces, the width of through hole 40 is approximately 0.34 inch, and this width is by reference number 46 expressions.Processing through hole 40 is to adopt 3/32 inch drill bit, with an angle that is about 34 °, is drilled through to channel part 32 by the outside of axle.Carry out reaming processing then, process a vertical surface 48.Surface 48 is basically perpendicular to the extension of the third part 33 of passage.Do not make the structure of reaming processing with only boring 3/32 inch hole with 34 ° angle and compare, process the surface 48 perpendicular to passage third part 33, this special adaptations can obtain fabulous effect.

According to the shape that other pipes of the present invention are chewed, represent by Figure 11 to Figure 15.Though these pipes are chewed in spinning and all are suitable for, by contrast test, as can be seen.Wherein certain pipe is chewed imitated yarn and is chewed imitated yarn with another kind of pipe and compare, and performance is better.

The diameter that pipe shown in Figure 11 is chewed 120 long-channel 133 is 1/8 inch, and the holes 140 of 4 rows, 1/16 inch diameter are arranged, and each hole is all perpendicular to passage 133.

Pipe shown in Figure 12 chews 220, and it is the hole 240 of 1/8 inch long-channel 233 and 4 1/16 inch diameters that a diameter is arranged, relatively the certain angle of tail end 222 inclinations.

Pipe shown in Figure 13 chews 320, there is a passage 333 to be connected with passage tail end 322, the diameter in hole is 1/16 inch, lean on the diameter of the channel part 331 of passage head end 321 to be about 1/8 inch, the diameter of the vacuum chamber 332 between passage 331 and 333 is 1/4 inch, the inclined hole 340 of 4 1/16 inch diameters outwards stretches from vacuum chamber 332.

The diameter that pipe shown in Figure 14 is chewed 420 channel part 433 is 1/16 inch, and the diameter of channel part 431 is 1/8 inch, and channel part 432 can be regarded vacuum chamber as, and it is shaped as taper, and 4 1/16 inch inclined hole 440 communicates with vacuum chamber 432.

Pipe among Figure 15 chew 520 with Figure 10 in pipe to chew 20 are essentially identical (Figure 15 are a schematic diagram).Having only not together, is exactly that whole channel part 531 is the butt taper, and channel part 532(is on the continuous therewith structure in hole 40) slightly different.

The pipe of Figure 11 to Figure 14 is chewed and is suitable for being spinned by rove, is unsuitable for by strip spinning intensity yarn higher or that be suitable for.And the pipe among Figure 15 chew 520 and Figure 10 in pipe chew 20 owing to increased from the passage head end, can spin the yarn of higher-strength by strip by total throughput of through hole to vacuum source 18.The mid portion of passage 32,532 allows fiber to move freely, and fiber just can be holded up like this, and snarls yarn core more firmly.Yet, passage 32,532 should be not excessive, to the effect that makes fiber owing to vacuum source 18, and be sucked out hole 40 and 540, and in these embodiments, total effective cross section of through hole is long-pending, and should to be equivalent to the effective cross section of the head end of axle and the channel part between the through hole long-pending, come to determine the size of through hole and channel part like this, the looping effect of the best that obtains fiber is restricted, according to this method, under any specified criteria, all can obtains best looping effect.

The pipe of Figure 11 to Figure 15 is chewed result of the test when using the infed material of same composition shown in the following table I.Adopt 1/19 wash the wool blend fiber, the i.e. wool blended fiber of the T-655 type dacron (polyester fiber) of 55% 3d * 3 1/2 " * 21/2 " and 45% WP644, the vacuum of vacuum source 18 is 14～15 Inches Of Mercury height, but the vacuum pneumatic amount of the embodiment of Figure 15 obviously increases than other embodiment.

The table I

Pipe is chewed raw material pattern fracture strength (gram/order) extension at break

Figure 11 rove 308 13.66%

Figure 12 rove 349 15.65%

Figure 13 rove 390 17.72%

Figure 14 rove 424 14.8%

Figure 15 strip 518 9.0%

Amazingly be, the pipe of Figure 15 is chewed and is processed, directly the fracture strength of chewing the yarn that is spinned by rove that processes than the pipe of Figure 14 (its structure and Figure 15 are similar) by the fracture strength of the yarn of strip spinning is higher, note, the pipe of Figure 11 to Figure 13 is chewed and is suitable for being used with openings of different aperture, and the pipe of Figure 14 and Figure 15 is chewed and is not suitable for being used with openings of different aperture.

It shall yet further be noted that the channel part 432 that the pipe of Figure 14 is chewed is the taper shape, it spins the yarn that comes than the spherical vacuum chamber 332 of Figure 13 higher fracture strength.Vacuum chamber 332,432 also also has other effect, provides the radial deflection space of fiber as it, and this looping to fiber is more favourable.

Equipment of the present invention comprises: an elongated hollow axle 30 that has head end 21 and tail end 22, this hollow shaft 30 have a passage 31,32,33 that extends continuously, and by the device that bearing 35,36 and shell 16 are formed, this device can be used for installing rotating shaft.The device of forming by gear 24 and power part (not shown), but this device drive sleeve 30 makes it rotate around axis.By feeding the device that rod 26 and other parts are formed, this device can make textile fabric S be fed into head end 21, and point-blank, basically pass the passage 31-33 of axle 30 along the rotation of axle, vacuum is put on the vacuum source 18 of axle 30 outsides, and it can make fiber and the free end of fiber of at least a portion by axle be attracted to through hole 40 on the axle, and when fiber point-blank, basically when rotation moves, will rotate along with axle.Form enough vacuum at channel part 32, so that yarn core is holded up and twined to fiber.By outlet roller or work beam or the similar device that constitutes of normal elements, the yarn Y that this device can be used for being spun into pulls out or batches from tail end 22.Utilize the embodiment shown in Figure 10 and 15 directly to make the yarn approaching by ribbon with ring spun yarn character.

Utilize in test Figure 16 to chew the yarn of processing different mixing match and different spinning numbers respectively, obtained following result (all results should add deduct error E, " SS " expression " cut-out staple fibre ") to pipe shown in Figure 180.

As can be seen from the test results, yarn of the present invention has higher fracture strength, what can be used as comparison is that 1/18 ' S(that 55% terylene and 45% wool are made props up) yarn, fracture strength with at least 500 gram/dawn, also test for similar ozzle shown in Figure 17, this ozzle has the inner-cavity structure of chamber 646 reality that are similar among Figure 18.In such test, the terylene by 45% props up with the 55% wool blended 1/18 ' S(that becomes) yarn, its fracture strength is 518, percentage elongation is 8.4%.Be spun into the yarn of same number by 100% wool, its fracture strength is 248, and percentage elongation is 14.1%.Therefore, by the yarn that the present invention is made by non-thermoplastic material, its intensity can satisfy the requirement of making the dress material fabric fully.

Should note, ozzle 620 shown in Figure 16, have a channel part that links to each other with tail end 624 and a channel part that links to each other with head end 621, at channel part 621,624, the chute hole 623 of 622,4 1/16 inch diameters of spherical vacuum chamber of one 1/4 inch diameter is arranged, stretch out by chamber 622.

Among Figure 17, ozzle 630 has a passage head end 631 and that is shaped as frustum to be equivalent to the passage tail end 634 of the passage 624 shown in Figure 16, it also has center-aisle part 632, this part passage can be thought a vacuum chamber, be shaped as taper shape, and have 4 1/16 inch inclined hole 633 to be attached thereto logical.

The ozzle 640 of Figure 18 comprises a tapered channel head end 641, a passage tail end 644 and an a pair of center-aisle 642,646 that is equivalent to passage shown in Figure 16 624, passage 642,646 is generally taper, and 4 1/16 inch inclined hole 643 is arranged, 647, the outside is stretched to by passage respectively in each hole.

See Fig. 1, the yarn of vacuum spinning of the present invention shown in Figure 2, can see that wrapped yarn is to be made of the fiber that comprises core fibre and wrapper fibre, although some pencil wrapper fibre in the structure of yarn, but the major part of wrapper fibre is a single fiber, these wrapper fibre bundles are heterogeneous, or incomparable inconsistent, and form more smooth surface, core fibre is consistent with the wrapper fibre direction that is evenly distributed on around it basically, and core fibre is identical with the stainability of wrapper fibre.

On the other hand, wrapped yarn illustrated in figures 1 and 2 has substantially parallel core part fiber and the wrapper fibre of equally distributed looping around yarn core, and wrapper fibre carries out looping with about 30 ° helical angle (for example in about 30 °-50 ° scope).About 20～30% fiber is a wrapper fibre in the resultant yarn ribbon, and wrapper fibre does not have bending, no barb, and the strand of essentially no fiber self turns round or twines, but have smooth surface

The vacuum spinning of Fig. 1 and Fig. 2 and common ring spun yarn and other some yarns as Fig. 3 and Fig. 5 to Fig. 8 are compared, will see, Fig. 1 and Fig. 2 outward appearance are near the ring spun yarn of Fig. 5.

Notice that the cladded yarn of Fig. 3 is different with wrapped yarn, yarn core is parallel around the yarn body with the long filament of gaining in strength with what added sth. made by twisting (very sth. made by twisting).

The open-end-spinning of Fig. 4 also has true sth. made by twisting, and its surface is loose, is a mass of the fiber of looping, and this neither wrapped yarn.

The MJS air spinning of Fig. 6 is secondly to approach most general ring spun yarn (promptly being only second to the vacuum yarn the most similar to the ingot yarn), and MJS yarn wrapper fibre is 55 ° of angles approximately, and the yarn core twist is less.The percentage of wrapper fibre approximately is 10%, and they more or less are single fibers.

The wrapper fibre of the eastern beautiful yarn of Fig. 7 is arranged with about 45 and is compared with other yarn, and wrapped yarn seems and nuzzles deeplyer in the sandwich layer fiber, formed the outward appearance that hinge twines.Surface fibre is wrapped in the ribbon that is similar to the Taslan yarn.Beautiful yarn surface, east wrapper fibre accounts for 20%, and the surface that the outward appearance that eastern beautiful yarn hinge twines and vacuum spinning are smooth is compared, and very big difference is arranged.

The DREF II type yarn of Fig. 8 is the friction spun yarn with true sth. made by twisting, but the fiber of the no any looping in surface, it neither wrapped yarn.

Attention: according to wrapped yarn of the present invention, it can be by non-thermoplastic fiber's spinning of 100%, or the major part of yarn core and cladding is made of the non-thermoplastic fiber, promptly according to the wrapped yarn of the present invention spinning, the fiber of main part at least can be by following various selections: cotton, mohair, flax, ramie, silk, wool, artificial fibre and their mixture thereof.Yet, according to wrapped yarn of the present invention, also being not limited to the non-thermoplastic fiber, it also can be by acrylic fiber, polyester fiber, and other fiber, or make by the mixture of their (with the non-thermoplastic fiber).

Note, vacuum spinning has been compared many difference with other existing wrapped yarn, some characteristics of vacuum spinning (these characteristics not exclusively are that other wrapped yarn has) are as follows: vacuum spinning needn't be used thermoplastic fibre, because the looping of surface fiber is controlled, wrapper fibre has identical character (not by hot melt) with core fibre, because molecular structure is constant, the dyeing property of yarn is identical, yarn core has identical stainability with the surface, wrapper fibre is same direction, rather than kinks mutually in inconsistent mode.

According to the present invention, a kind of yarn that is suitable for doing dress material, promptly the wrapped yarn that is constituted has good intensity and appearance characteristics, and approaches ring spun yarn most, and, according to the present invention, can produce yarn with the speed much higher, and shorten operation greatly than RING SPINNING.For example, in long fine RING SPINNING, be to grow fine the mixing earlier, then carry out drafting, divide comb, four road draftings.Past is normal through rove, and spun yarn batches, and comes into operation at last.According to the present invention, the step of the vacuum spinning that is made by long fiber is: mixing, drafting, combing, three road draftings, vacuum are spun, and come into operation then.Therefore, long stapled vacuum is spun more long stapled RING SPINNING and has been lacked three process.In the vacuum of staple fibre is spun, adopted the operation identical with Air-Jet Spinning, promptly mix, divide comb, two road draftings, spinning, come into operation then.

The present invention also provides a kind of vacuum yarn withdrawal device that is used for vacuum spinning, sees Figure 19 to Figure 23.

Referring to Figure 19,20 and 23, vacuum spinning device 714 common parts comprise shell 716, has continuous passage 721(that the hollow shaft 718 of head end 719 and tail end 720 and one is communicated with to tail end 720 by head end 719 with reference to Figure 20), on the complete circumference of axle 718, have at least a part to have through hole, as hole 722(referring to Figure 20), a typical structure is equidistantly to wear 4 holes 722 on the circumference of axle 718.Installation shaft 718, make it can be,, rotate around the A-A axle as by means of being contained in bearing arrangement between axle 718 and the shell 716 (among Figure 20 shown in 724) around axle A-A rotation, shell 716 duct couplings 726 and valve 727(are referring to Figure 19) up to vacuum source 728, vacuum source can be common vavuum pump.Hollow shaft is by motor 729 or similarly the power source drive is around axle A-A rotation, and this power source is by gear 730 or similar standard drive unit, and as belt wheel or chain, power transmission shaft 718 effectively.

An embodiment of vacuum spinning device 714 is that the drafting system (not shown) grips ribbon or rove S, and ribbon or rove S(are comprised by a cover feed roller 732) feed the head end 719 of axle 718.Circumference outside at axle 718, utilize negative pressure of vacuum, produce a air flow from head end 719, by hole 722, make fiber by hollow shaft the time, the free end of at least some fibers or fiber will be inhaled to axis hole 722, simultaneously, when these fibers usually along rotation A-A when mobile point-blank, also will be along with axle rotates.What coaxial effectively 718 tail ends interrelated is a common spooler.This spooler such as Figure 19 and Taper Pipe 734 shown in Figure 23.

According to yarn withdrawal device of the present invention, generally can be referring to 740 shown in Figure 21-23, first main member of device 740 is a vacuum tank 742, and it has the wall that comprises antetheca 744, and container 742 is connected to vacuum source 728 effectively by general pipeline 743.

Second main member of this yarn withdrawal device is vacuum tube 745, the tail end 747 that vacuum tube has the head end 746 and opened to open.Yarn withdrawal device 740 defines device and an installation vacuum tube 745 of a perforate 749 by one on container wall 744, and the device of this pipe rotation is constituted.In the cited in the drawings example, the device that rotatable vacuum tube 745 is installed is to be made of cylinder 750.Cylinder 750 has projecting shaft 751, and projecting shaft 751 is general parallel with vacuum tube 745 tail ends 747, and coaxial with cylinder 750.Axle 751 is by container wall 744 upper bearing (metal) holes 753, and its free end is fixed in the container 742 by E type hoop 754 or similar connector.Vacuum tube 745 comes down to by straight-through mid portion 756, and head 757 and afterbody 758 are formed.Head 757 comprises the head end of opening 746, and head 757 generally is perpendicular with middle part 756.Afterbody 758 comprises tail end 747, and general afterbody 758 is perpendicular with middle part 756, and is parallel to head 757.Afterbody 758 is loaded in the cylinder 750, but leaves central shaft one segment distance, and promptly afterbody 747 and axle 751 are radially with a certain distance from having, as shown in Figure 22.

Cylinder 750, axle 751, dead eye 753 and similar member thereof have been formed such device.This device can rotate pipe 745, promptly managing 745 can rotate around axis B-B with respect to vacuum tank 742, can be so that manage 745 from its first position, be off-position (referring to Figure 21-23), forward the second place to, be operating position (the chain-dotted line position of Figure 22, and Figure 19 and position shown in Figure 20).On off-position, pipe 745 is not connected to container 742 effectively, and on the operating position, pipe 745 is communicated on the container 742 effectively.The perforate 749 on the vacuum tank wall 744 has been aimed in the tail end perforate 747 of vacuum tube, on this operating position, the effect of the vacuum that is provided by vacuum source 728 makes air flow through the head end 746 of vacuum tube 745, flow through whole vacuum tube 745, by perforate 749, enter container 742, finally flow to vacuum source 728 by pipeline 743.

For vacuum tube 745 is stopped operating in the operating position that perforate 747 is aimed at perforate 749, can on cylinder 750 and container 742, provide and its corresponding detent mechanism (not shown), in addition, can provide spring assembly (not shown).For example, the torsionspring of wall 744 on a kind of connecting axle 751 and the container 742 is set in container 742, applies a moment of torsion, make it to be inclined to its off-position managing 745.

Also have a very high requirement to be, when the operating position of vacuum tube 745, prevent that the circumference outside of axle 718 from also supplying with vacuum at it.In this operating position, head end 746 is directly adjacent with the tail end 720 of axle 718, and aims at passage 721, as Figure 19 and shown in Figure 20.Cut off being communicated with of vacuum source 728 and shell 716, can be connected to an electric switch (referring to shown in Figure 19 761) effectively and realize by managing 745.This switch can be reacted to the rotation of operating position by off-position to vacuum tube 745.Switch 761 can be a kind of mercoid switch that is installed on the pipe 745, or a kind of tongue switch that is installed in the cylinder 750, this tongue switch and the magnet cooperating that is associated on the wall 744, perhaps switch 761 can be other any ready-made device of coml that is widely used in.Electric switch 761 is linked on power supply 762 and the common electromagnetic controller 763 effectively, comes control valve 727.

Embodiment as shown in figure 19, when pipe 745 when turning to its operating position, switch 761 cuts out, and electromagnetic controller 763 is had an effect and valve 727 is moved on to the position that it is closed, thereby disconnect being communicated with of vacuum source and shell 716.When pipe 745 primary importances of getting back to it, promptly during off-position, switch 761 is opened, and has removed the effect of electromagnetic controller 763, so that valve 727 moves on to the position that it is often opened.

As shown in figure 23, the rotating shaft B-B of vacuum tube 745 is installed preferably, make its axis A-A with hollow shaft 718 parallel, and stand away with axis A-A in the horizontal direction, the installation of vacuum tube 745 also should not hinder batching apparatus 734 or other similar spooler.

In a typical course of work of yarn withdrawal device, with the fiber F(that interconnecting referring to Figure 20) feed the head end 719 of hollow shaft 718, particularly when interconnective fiber itself is rove or ribbon, fiber F can through or without drawing-off, in case during the head end of fiber F feeding perforate 719, the spinner manually operates vacuum tube 745, make its off-position (Figure 21 from it, Figure 23, and the solid line position of Figure 22), move on to its operating position 1 Figure 19, Figure 20, and the dotted line position of Figure 22.Pipe 745 rotates around the axis B-B of axle 751, so that head end 746 is adjacent with the tail end 720 of hollow shaft 718, and head end 746 is aimed at passage 721.In this position, pipe 745 effectively connects perforates 747 and 749 and vacuum tank 742, up to vacuum source 728.Manage 745 simultaneously and draw the fiber F that interosculates, one section fiber that interosculates is pulled through whole passage 721(participates in Figure 20).Manually will manage 745 operating positions that turn to it during this period of time in, switch 761 cuts out, valve 727 also correspondingly cuts out along with cutting out of switch.

In case the part of the fiber F that interosculates was inhaled passage 721 fully, and vacuum tube 745 just is moved back to its off-position.Then, the fiber that this section interosculates, i.e. a part that is stretched out from the tail end of axle 718 is connected to effectively and batches awl tube 734 or similarly on the spooler.Open motor 729 then, this just begins to carry out the anti-yarn of vacuum to vacuum spinning equipment 714.

Just in case be necessary to draw yarn once more under the situation of broken end, when drawing yarn once more and finish, motor 729 can continue driving shaft 718.

Claims (3)

1, resultant yarn equipment comprises: an elongated hollow axle 20, and it has a head end 21 and a tail end 22, and a passage 31,33 that extends is continuously arranged from the head end of hollow shaft to tail end, on this whole circumference, has at least a part to be passed by through hole 40; Be used to install the device 35,36 of the said axle that rotates around axis; Be used for the device 24 that the said axle of transmission rotates around its axis; Be used to make the textile fabric device 26 of the continuous extension passage by said axle point-blank, this device can be fed into fiber the head end of axle along the axis of rotating shaft; With the device 18 of vacuum feed to axle 30 outsides, this device can make fiber and the free end of fiber of at least a portion by axle be attracted to through hole on the axle, and when fiber point-blank, when rotation moves, will rotate with the axis basically; Be used for batching from the tail end of said axle the device 734 of resultant yarn, this tail end is relative with the head end of said axle; It is characterized in that:

Setting device 31,32 between said head end and tail end, this device allows free-fiber to move therein, with convenient fiber the time, have at least the free end of the fiber of the contiguous said through hole of a part or fiber to hold up and twine the core of fiber by passage;

Said device 31,32 comprises a cavity that has been prescribed, and the sectional dimension of this cavity is more much bigger than the sectional dimension of said tail end passage, and said through hole 40 is communicated with this cavity;

Said to allow device that free-fiber moves therein be that conical part 31 constitutes by the general fixed limit of said passage, and this part is bigger at its cross section of part of the head end that approaches axle, and in the part of the tail end that approaches axle, its cross section is less.

2, equipment according to claim 1 is characterized in that: said conical portion is made of with the normal cone that the center line of said head end and tail end aligns mutually a center; Said through hole is generally wedge shape, and leads to the outside of said axle from said tapered segment.

3, a kind of spinning method comprises the following steps: through the strip of drawing-off ribbon to be carried out drawing-off for obtaining; Feed strip through drawing-off along rectilinear direction A, strip is a pencil; It is characterized in that:

Make fiber enter the inside of a hollow shaft 20, this can around with the axis rotation of A direction basically identical, on the part circumference of axle, be provided with through hole 40, in the part that has through hole an inner chamber 32 that has enlarged is arranged;

Vacuum is applied to the circumference outside of the part that has through hole of axle, and its vacuum will be enough to the part of the ribbon in the axle is inhaled inner surface to axle;

Make axle rotation at a high speed, when the fiber in the axle when the A direction moves, the end of certain a part of fiber will rotate along with axle in these fibers, and the end of these fibers reaches the inner chamber 32 that has enlarged and final looping is lived the other parts of ribbon, thereby makes final finished product yarn.

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