CN100415964C

CN100415964C - Fiber bundling apparatus of spinning machine

Info

Publication number: CN100415964C
Application number: CNB2005100788839A
Authority: CN
Inventors: 中野勉; 石井隆久; 丸山直树; 藤井能理
Original assignee: Toyoda Automatic Loom Works Ltd
Current assignee: Toyota Industries Corp
Priority date: 2004-05-28
Filing date: 2005-05-27
Publication date: 2008-09-03
Anticipated expiration: 2025-05-27
Also published as: JP2005336672A; TW200606291A; CN1702209A; KR20050113129A; JP4179227B2; KR100589880B1; TWI287593B

Abstract

In the apparatus for collecting fiber bundle 11 installed on the downstream side of a final discharging roller pair 13 of a drafting device, comprising a discharging section provided with a bottom nip roller 20a, a suction pipe 29 placed on the upstream side of the moving direction of the fiber bundle F pinching a nipping point of the discharging section. The suction pipe 29 has a guide face 29b provided with suction holes 29a, the porous belt 18 is wound on a guiding member 19, bottom nip roller 20a and the suction pipe 29 in a state sliding on the guide face 29a, 29b. A part of the suction pipe 29 has a curved face section 29c of a shape following the periphery of the bottom nip roller 20a, the bottom nip roller 20a has a >=0.04 mm of depth d and has a channel 33 extending to the direction crossing with the peripheral direction of the bottom nip roller 20a on the width part on which the porous belt 18 is wound.

Description

Fiber bundling apparatus in the spinning machinery

Technical field

The present invention relates to the fiber bundling apparatus in a kind of spinning machinery, relate in particular to, for example, be positioned at the device in drawing machine downstream of spinning machine and the fibre bundle by the drawing-off of drawing machine boundling.

Background technology

Comprise the beaming device of boundling drawn fiber bundle before twisting process of several types in the prior art, purpose is to improve quality of yarn, for example reduces filoplume.A circulation perforated tape is used to boundling and transmits fibre bundle.For example, as the open 2003-113540 of Japan's special permission, International Application No. WO 02/084000 and the open 2002-235252 of Japan's special permission.

As shown in Figure 8, disclose a kind of fiber bundling apparatus and comprise 62, one suction section 63 of a pair of gripping roller and a perforated tape (perforation apron) 64 that is positioned at 61 pairs of downstreams of rear roller in JP2003-113540, these constitute a drawing-off machinery.Going up gripping roller 62b for one is pressed against down on the gripping roller 62a by perforated tape 64.Suction section 63 comprises that two are positioned at along the gripping point downstream of the following gripping roller 62a of boundling fiber bundle F moving direction and the suction tube 65,66 of upstream.Guide surface 65b, 66b comprise suction socket 65a, 66a, and it extends along boundling fiber bundle F moving direction, and described guide surface is respectively formed at the upstream of suction tube 65 and the downstream of suction tube 66.Grip the smooth surface of roller 62a down.

The brochure of International Application No. WO 02/084000 also discloses and the essentially identical a kind of device of the disclosed fiber bundling apparatus structure of JP2003-113540.Disclose in the WO02/084000 brochure that a kind of surface has a groove with grip down the identical roller of roller 62a.

As shown in Figure 9, a disclosed fiber bundling apparatus is positioned at final roller 61 downstream is formed drawing-off machinery among the JP2002-235252, has a suction tube 67, and this suction tube has a suction socket 67a and has oval-shaped substantially cross section.Perforated tape 64 is looped around on the excircle of suction tube 67 and tension roller 68 slidably.The rotation of a front upper roller 70 is delivered to one by a driving belt 69 and grips roller 71.One side will grip roller 71 and bear against one side driving gripping roller 71 on perforated tape 64, thereby drive perforated tape 64.

Tension roller 68 is irregular shape on the top, position facing to perforated tape 64.Tension roller 68 and is rotated according to the running of perforated tape between spring supporting bracket 72 and perforated tape 64.Tension roller 68 parts have irregularly shaped to prevent that the fiber and the cotton flyings that stick to perforated tape 64 inboards from accumulating in the wedge gap 73 of suction tube 67 and 64 formation of perforated tape.Because tension roller 68 rotary speeies are slower than perforated tape 64, the fiber that sticks to perforated tape 64 inboards is scraped off by irregular part.Prevent that like this fiber from arriving wedge gap 73.

According to disclosed structure among the JP2003-113540, following gripping roller 62a does not have particular design, has simply used a ganoid roller.Disclosed equipment is provided with such roller in International Application No. WO 02/084000, its be used to grip this roller and on grip perforated tape 64 between the roller 62b, as the roller that is widely used in traditional drawing-off machinery.Described roller has groove in its surface to increase the grasping force to perforated tape 64.

Suction tube 65 is placed along the periphery that grips roller 62a down, according to fibriilar type and spinning conditions, the cotton flyings that produce in the spinning process will be accumulated in one week in the periphery and the following gap that grips between the roller 62a of the suction tube 65 that has suction socket 65a significantly.If remarkable accumulation takes place in cotton flyings as mentioned above, will be applied in an improper tension force on the perforated tape 64, hinder the rotation of perforated tape 64.This can cause the fluctuation and the Yarn break of yarn qualities.Therefore, as precautionary measures, before cotton flyings accumulation reached the problem level, the fiber that pile up in the cleaning gap was to remove the fiber that is accumulated.Yet, as mentioned above, in short period, need expensive man-hour to clean on the parts that must be cleaned in a large number less than a week.And because spinning machine must be shut down during the cleaning, output also can reduce significantly.

In above-mentioned patent JP2002-235252, tension roller 68 is slower than the rotary speed of perforated tape 64, and irregularly shaped like this part scrapes off the fiber that sticks to perforated tape 64 inboards.Correspondingly, prevent that accumulation of fibers is at wedge gap 73.Yet, have erose described roller not act on down and grip on the roller 62a.This is because in the disclosed structure of JP.2003-113540, perforated tape 64 is preferably with the speed rotation identical with gripping roller down.If perforated tape 64 with respect under grip roller 62a rotation, the durability of perforated tape 64 is considerably reduced.

In addition, according to periphery and the following observation that grips the state of the gap middle cotton flyings accumulation between the roller 62a to suction tube 65, obviously, cotton flyings can not accumulate in the terminal upstream of periphery and the gap between the following gripping roller 62a of perforated tape 64 in moving direction of suction tube 65, but the position in Fig. 8 shown in the chain-dotted line begins accumulation, that is to say that begin accumulation inner the branch from the gap.Therefore, be pressed in the gap owing to stick to the cotton flyings of perforated tape 64 inboards, cotton flyings not necessarily can accumulate.Therefore, the disclosed structure of JP2002-235252 only can prevent that cotton flyings from adhering on the perforated tape 64, and differing stops the accumulation of cotton flyings surely.

Summary of the invention

An object of the present invention is to provide a kind of fiber bundling apparatus in spinning machine, its prevent cotton flyings be perforated band around the gripping roller and suction section between run up to certain quantity, this quantity can hinder spinning, but does not reduce the durability of perforated tape.

To achieve these goals, the invention provides a kind of fiber bundling apparatus of the fibre bundle that is used for the drawing-off of boundling drafting unit in spinning machine.This device comprises feeding portion, suction section, and perforated tape.Feeding portion be positioned at drawing-off portion a pair of final roller the downstream and comprise that grips a roller.Pumping unit has a guide surface, and it comprises a suction socket along the gripping point upstream of the feeding part of fibre bundle moving direction.Described perforated tape is around gripping roller, and this moment, described perforated tape slided along this guide surface.Described suction section comprises along gripping the curved surface that the roller periphery extends.Described gripping roller has groove, and this groove extends along the direction that the circumferencial direction with described gripping roller intersects, with corresponding with the width of perforated tape.The degree of depth of described groove is more than or equal to 0.04mm.

The fibre bundle of drafted partial draft along with the rotation of perforated tape by feeding portion.At this moment, the suction of suction socket acts on the fibre bundle by perforated tape, fibre bundle in the relevant position of suction socket by boundling.In the prior art, the cotton flyings that produce in the spinning process are accumulated in the gap that grips between roller and the suction section, and suction section is extended along the periphery that grips roller.According to spinning conditions, the quantity of the cotton flyings that accumulate in an about week can hinder spinning.Yet, according to device of the present invention, because the degree of depth is more than or equal to the crossing groove of circumferencial direction of 0.04mm and bearing of trend and gripping roller, form around the width that grips roller according to perforated tape, therefore can stop cotton flyings gripping roller and in the gap between the suction section of the extension that grips the roller circumferencial direction, running up to the amount that hinders spinning.This be because, the existence that grips the groove on the surface of roller has suppressed to grip roller and along the generation of the eddy current that grips the gap location between the suction section that the roller circumferential surface extends, and prevents that perhaps cotton flyings are owing to entering in the gap that the increase of above-mentioned gap internal pressure causes.In addition, even cotton flyings enter in the gap, cotton flyings are caught by groove and are removed in the gap easily.

The preferred degree of depth of groove is more than or equal to 0.05mm.In this case, prevent that further cotton flyings from gripping roller and accumulating in the gap between the suction section that grips the extension of roller circumferential surface.

The preferred degree of depth of groove is less than or equal to 10mm.If the width of groove is too wide, when perforated tape was compressed in a 's of gripping in the roller gripping point pressurized, the flexing of described perforated tape was excessive.This causes perforated tape tired easily.Yet, if the width of groove is less than or equal to 1.0mm, grips point and be squeezed in when gripping on the roller when perforated tape is compressed in, the flexing of perforated tape can be not excessive.Accordingly, the durability of perforated tape is enhanced.

The groove preferred parallel is extended in the axis direction that grips roller.In this case, the processing of gripping roller is easier than making channel shaped become the situation that tilts to extend with respect to the axis direction that grips roller.

Groove can form with respect to the axis direction that grips roller.In this case, if the width of groove is the same, perforated tape becomes the situation that is parallel to the axis direction extension that grips roller in the flexing amount that grips point and channel shaped and compares and be lowered.Accordingly, durability is enhanced.

Description of drawings

Fig. 1 (a) is the side diagrammatic sketch that part is cut, and it illustrates the fiber bundling apparatus corresponding to an embodiment;

Fig. 1 (b) is the partial view that an amplification of device among Fig. 1 (a) is shown;

Fig. 1 (c) illustrates an amplifier section view that grips roller;

Fig. 2 illustrates pumping unit and grips the part schematic diagram that concerns between the roller down;

Fig. 3 is the curve map that cotton flyings accumulated state is shown and concerns between the operating time;

Fig. 4 illustrates the curve map that concerns between cotton flyings accumulated state and the gash depth;

Fig. 5 (a) is the part front view of following gripping roller that the groove of the direction that parallels to the axis is shown;

Fig. 5 (b) illustrates a perforated tape to be gone up the schematic diagram that the gripping roller is pushed down state by one;

Fig. 6 (a) and 6 (b) are the following gripping roller schematic diagrames separately that illustrates corresponding to the embodiment of distortion;

Fig. 7 is the part side view that an improved embodiment is shown;

Fig. 8 is the part side view that common fiber bundling apparatus is shown; With

Fig. 9 is the cross section part side view that another common fiber bundling apparatus is shown.

The specific embodiment

Fiber bundling apparatus 11 in the spinning machine of one embodiment of the invention is described with reference to Fig. 1-5.Fig. 1 (a) is the side view of the cut-away section of fiber bundling apparatus.Fig. 1 (b) is the part schematic diagram of an amplification of Fig. 1 (a).Fig. 1 (c) is the part schematic diagram that grips the amplification of roller 20a down.Fig. 2 illustrates suction section 17 and the following relation that grips between the roller 20a, and is that a view that the upper left side is seen from Fig. 1 (a) has wherein saved front upper roller 15 etc.

The structure of fiber bundling apparatus 11 is identical with the disclosed beaming device of JP2003-113540 basically.Shown in Fig. 1 (a), fiber bundling apparatus 11 is positioned at the downstream of a pair of final feeding roller 13 of drawing-off part, and it is a drawing-off machinery 12 in the present embodiment.A pair of final feeding roller 13 comprises a preceding bottom roll 14 and front upper roller 15.

Fiber bundling apparatus 11 comprises paired gripping roller 16, suction section 17, and perforated tape 18 and guide member 19, it forms feeding portion.Every pair grips roller 16 and constitutes by being formed on one of following gripping roller 20a on the rotating shaft 20, and bottom roll 14 was provided with before rotating shaft was parallel, on grip roller 21 by corresponding perforated tape 18 near described gripping roller 20a.Be similar to the front upper roller 15 of drawing-off machinery 12, per two spindles, on grip roller 21 and just supported by a loading arm (not shown) by a support component 22.The support component of support component 22 and front upper roller 15 is integrally formed.

On the other hand, as shown in Figure 2, the bottom of fiber bundling apparatus 11 is shaped so that half spindle between the roller stand 23 of drawing-off machinery 12, that is to say, in the present embodiment, four spindles form a unit.Roller stand 23 is with the longitudinal direction setting of predetermined interval along machinery.Along the back shaft (not shown) that the longitudinal direction of machinery extends, be arranged on the middle part of paired adjacent roller stand 23 and the rear portion of back bottom roll (not shown).Support arm 24 of each back shaft assembling.Support between each rotating shaft 20 in roller stand 23 and the respective support arms 24.

The length correspondence of each rotating shaft 20 several spindles (being four spindles in the present embodiment) and the bearing (not shown) and the end plug 25 that are fixed on rotating shaft 20 ends are assembled together.The assembled portion 25a of end plug 25 is by being assemblied in the support component 23a on roller stand 23 and the support arm 24 respectively, and 24a supports.Like this, rotation is supported between each rotating shaft 20 in roller stand 23 and the respective support arms 24.Each

support component

23a, 24a can support two end plugs 25.That is to say, each

support section

23a, 24a can support and connection to the end plug 25 of the end of the rotating shaft 20 of phase adjacency pair.

Gear 26 is used to transmit the revolving force of drive source as the revolving force transfer member, and it is assembled in the longitudinal center of each rotating shaft 20.20 one-tenth as a whole formation of gear 26 and rotating shaft.In this embodiment, before preceding bottom roll 14 is formed on as the drive source of rotating shaft 20 with facing to the geared parts 14a of gear 26 on the bottom roll 14.An idler gear 28 is supported by 27 rotations of a support arm, and it is connected on each back shaft that is similar to support arm 24.This idler gear 28 and gear 26 and geared parts 14a cooperate.Therefore, the revolving force of preceding bottom roll 14 goes out opinion 28 by geared parts 14a, centre and gear 26 is transmitted to each rotating shaft 20.

On the base of spinning machine, a suction tube (not shown) extends (perpendicular to Fig. 1 (a) thin slice) along the longitudinal.Suction section 17 comprises suction tube 29, and it is parallel to rotating shaft 20 extension and tube connectors 30, and it links to each other with suction tube 29 and apply negative pressure and gives suction tube 29.Described tube connector 30 is positioned at the place ahead of corresponding gear 26, and the part of tube connector 30 is as the cover plate of gear 26 and idler gear 28 like this.Tube connector 30 near-ends are connected to described suction tube by the folding tube connector 31 of an accordion.Far-end of its first terminal assembling tube connector 30 of each suction tube 29 usefulness, and with the corresponding end plug 25 of its second tip engages.

Shown in Fig. 1 (a), the far-end of the suction nozzle 32 of the pneumatic means of single type be positioned at described guide member 19 below.When fiber bundle F ruptured, each suction nozzle 32 was drawn the fiber bundle F of supplying from drawing-off machinery 12 accordingly.The near-end of suction nozzle 32 is connected to the suction tube (not shown).

As Fig. 1 (a) with shown in 2, suction tube 29 is positioned at along the upstream of the gripping point of the paired gripping roller 16 of fiber bundle F moving direction.Each suction tube 29 has a guide surface 29b, forms suction socket 29a thereon.Described suction socket 29a extends in the upstream of the gripping point that grips roller 16 in pairs along fibre bundle (layer) F moving direction.Each suction tube 29 comprises a curved surface 29c, and it extends along the periphery that grips roller 20a down.

Guide member 19 is positioned at along the downstream of the gripping point of the paired gripping roller 16 of fibre bundle (layer) moving direction.Each guide member 19 comprises guide surface 19a, and it is PP pilot punch band 18 and a curved surface 19b movably, and this curved surface extends along the periphery that grips roller 20a down.Each guide member 19 is arranged so that at curved surface 19b and the gap that grips down between the periphery of roller 20a bigger than the curved surface 29c of suction tube 29 and the gap that grips down between the periphery of roller 20a.

Shown in Fig. 1 (a), each perforated tape 18 on one of suction tube 29, in the guide member 19 one and grip on the roller 20a down.Therefore, each perforated tape 18 is according to the corresponding rotation rotation that grips roller 20a down, and simultaneously along

guide surface

19a, 19b slides.

Shown in Fig. 1 (b) and 1 (c), each grips the groove 33 that roller 20a comprises some down, and its length that has is corresponding to the width of corresponding perforated tape 18.Groove 33 forms has trapezoidal cross-section, and wherein the width of open end is bigger than the width of bottom.The depth d of groove 33 is more than or equal to 0.04mm, and is preferably greater than or equals 0.05mm.And in order to prolong the service life of perforated tape 18, the width W of groove 33 preferably is arranged to be less than or equal to 1.0mm.In this embodiment.Groove 33 forms with constant spacing along the circumferencial direction C that each grips roller 20a down.Groove 33 for example forms by gear cutting.Suppose that the spacing between the adjacent grooves 33 represents that with L the pitch of groove 33 represents that with P the ratio of spacing L and pitch P ((L/P) * 100) preferably is set up more than or equal to 40%, more preferably is set up more than or equal to 50%.Described groove 33 is not illustrated in Fig. 1 (a).

Groove 33 forms the axis direction inclination that grips roller 20a as shown in Figure 2 relatively down or be parallel to the axis that grips roller 20a down shown in Fig. 5 (a).Selectable, groove 33 can be formed by the rhombus embossing.

The operation of aforesaid fiber bundling apparatus 11 is described now.

Open spinning machine, drafted mechanical 12 drawing-offs of fiber bundle F and be directed to fiber bundling apparatus 11 from a pair of final feeding roller 13.Each is to gripping roller 16 with the speed rotation faster slightly than the superficial velocity of a pair of final feeding roller 13.After with the gripping point of suitable tension force through paired gripping roller 16, fiber bundle F moves to the downstream and is rotated simultaneously and twists.

The suction of described pipe is applied on the suction tube 29 by tube connector 30, and suction further acts on the fiber bundle F formation suction socket 29a on guide surface 29a and perforated tape 18 by suction socket 29a.Each fiber bundle F moves to position corresponding to the suction socket 29a that links to each other with suction and boundling state then.Therefore, compare with the spinning machine that does not assemble fiber bundling apparatus 11, the generation of fluffing and waste cotton is suppressed and quality is enhanced.

In the prior art, the cotton flyings that spinning machine when running produces are accumulated in down in the gap between the curved surface 29c that grips roller 20a and suction tube 29, and suction tube is along the periphery extension that grips roller 20a down.Amount according to the accumulation in a week of the cotton flyings of spinning conditions hinders spinning.Yet,, have that the degree of depth is formed on each periphery that grips roller 20a down more than or equal to the groove 33 of the some of 0.04mm and extend along the direction that intersects with the circumferencial direction C that grips roller 20a down by the structure of preferred embodiment.Therefore, the existence of groove 33 causes that each grips down the eddy current in the gap between roller 20a and the curved surface 29c, and curved surface extends along the periphery that grips roller 20a down, perhaps improves pressure in the described gap according to the rotation that grips roller 20a down.Prevent that so cotton flyings from entering into the gap.Say that further even cotton flyings enter into the gap, cotton flyings are caught and removed by groove 33.Therefore, cotton flyings are easier is eliminated from the gap.

Used a kind of roller (case hardness Rz is 10z) that has smooth surface normally spins, the surface is polished the surperficial polished roller that hardness Rz reaches 0.4z, with the following roller 20a that grips, it has the groove 33 that is formed with different depth in its surface to suppress the accumulated state that each grips the fiber (cotton flyings) in the gap between roller 20a and the curved surface 29c down, and curved surface extends along the circumferential surface that grips rod 20a down.This test is not only finished on groove 33 that the axis direction that grips down rod 20a about each tilts to extend to form, and grips down on groove 33 that roller 20a extends to form and finish being parallel to each, and groove 33 extends to form with Argyle.

As table 1 Fig. 3 and result shown in Figure 4.Fig. 3 has under the situation of different surfaces state gripping roller 20a down, and the curve map of variation of the accumulated state of cotton flyings is shown, and Fig. 4 is the curve map that grips the relation of the case hardness of roller 20a or gash depth and cotton flyings accumulation rate down.In Fig. 4, gash depth is represented by logarithm, and following gripping roller 20a does not have groove 33 on the surface, and case hardness is illustrated with the form of gash depth.That is to say that it is 10z that the gash depth of 0.01mm is equivalent to case hardness Rz, it is 0.04z that the gash depth of 0.0004mm is equivalent to case hardness Rz.

When all measured when having accumulation to take place in the spinning ingots all on test machine, accumulation rate is defined as 100%.When the circumferential surface that grips roller 20a under each did not have groove 33, the area occupation ratio of outer circumference surface was defined as 100%.The area occupation ratio of external peripheral surface is to obtain by the area that deducts groove 33 during never the surface of roller of groove 33 amasss, and long-pending divided by the surface of roller that does not have groove 33 the acquisition value, the acquisition value multiply by 100 again.Therefore, according to the following gripping rod 20a that parallel groove 33 thereon is formed, the area occupation ratio of external peripheral surface equals the percentage of the ratio of spacing L and pitch P, supposes that the spacing between the adjacent grooves 33 is represented with L, and the pitch of groove 33 is represented with P.

Table 1

Can obviously find out from table 1 and Fig. 3,4, according to the following gripping roller 20a that smooth surface is arranged, first day accumulation rate be 16%, the six day be 50%.On the contrary, grip instantly that roller 20a is polished a low case hardness, cotton flyings are to reach 88% in 78%, the second day in first day accumulation rate of operation, and since then, keep constant up to the 6th day accumulation rate.Have under the situation of groove 33 gripping down on the roller 20a (the area ratio of external peripheral surface is 82%) with 0.04mm degree of depth, cotton flyings are 6% first day accumulation rate, reached 26% at the 3rd day and the 4th day, and after this, growth rate is lower and keep constant ratio.Cotton flyings accumulation rate approximately was half of smooth surface roller at the 6th day, and when gash depth be 0.05mm, accumulation rate was 0% up to the 4th day, accumulation rate was 1% at the 5th and six day.When gash depth during more than or equal to 0.09mm, accumulation rate even also be 0% at the 6th day.According to above test, prove that each surface that grips roller 20a down is smooth, cotton flyings are accumulation easily.According to Fig. 4, prove that the accumulation rate of cotton flyings descends suddenly when gash depth approximately is 0.05mm.

Because groove 33 forms by the gear cutting, gash depth is dark more, and the area of external peripheral surface is than more little.According to table 1, if prove gash depth more than or equal to 0.05mm, the area of external peripheral surface is than the accumulation rate that almost can not influence cotton flyings.Yet if gash depth increases and the area ratio of external peripheral surface reduces, the width W of the open end of each groove 33 increases.If the width W of open end increases, when perforated tape 18 is gripping roller 21 extruding towards the corresponding roller 20a that grips down on being linked to each other corresponding to one position in the groove 33, the crooked easily number of bends that increase of perforated tape 18 are shown in Fig. 5 (b).This causes perforated tape 18 tired easily.Therefore, from the aspect of durability, the degree of depth of groove should be too not dark.Make groove form the aspect of convenient and durability from increasing manufacturing tolerance, the degree of depth of groove preferably is about 0.2 to 0.3mm.

Preferred embodiment has the following advantages:

(1) fiber bundling apparatus 11 is assembled into right gripping roller 16, and it is positioned at the downstream of the final feeding roller 13 of drawing-off machinery 12, and comprise suction tube 29 and perforated tape 18 around following gripping roller 20a.In fiber bundling apparatus 11, each grips roller 20a down and has groove 33, and its degree of depth that has is extended more than or equal to 0.04mm and in the direction that the circumferencial direction with following gripping roller 20a intersects.Therefore, prevent that cotton flyings from running up to certain amount in the gap between the curved surface 29c of suction tube 29 and hinder spinning gripping roller 20a down and extend along the circumferential surface that grips roller 20a down.

(2) when the depth d of groove 33 more than or equal to 0.05mm, it becomes and accumulates in the gap between the curved surface 29c that is difficult in down the suction tube 29 that grips roller 20a and extend along the circumferential surface that grips roller 20a down for cotton flyings.

(3) groove width 33 that is formed is less than or equal to 1.0mm.Therefore, when each perforated tape 18 grips roller 21 and gripping point when nestling up adjacent following gripping roller 20a and being extruded by corresponding going up, the flexing amount of perforated tape 18 is no longer excessive.Accordingly, durability is enhanced.

(4) groove 33 can be formed by the gear cutting by constant pitch, and the area occupation ratio of external peripheral surface is more than or equal to 40%.Therefore, nestle up adjacent following gripping rod 20a by gripping rod 21 extruding on corresponding when each perforated tape 18 is gripping point, the total amount of perforated tape 18 flexings can be not excessive.Accordingly, durability is enhanced.When the area occupation ratio of external peripheral surface more than or equal to 50% the time, durability is further improved.

(5) when parallel each axis that grips rod 20a down of groove 33 extends to form, the manufacturing of following gripping rod 20a and groove 33 form that to tilt about each axis direction that grips rod 20a down that extension compares be easy.

(6) tilt to extend about each axis direction that grips down rod 20a and when forming when groove 33, if the width of groove 33 is the same, corresponding perforated tape 18 is lowered in the crooked total amount that grips point, and perforated tape 18 and groove 33 form parallel each grip situation that the axis of rod 20a extends down and compare and be prevented from excessive flexing.Corresponding durability is enhanced.

(7) groove 33 is formed in the width W of the open end mode wideer than the width of bottom.Therefore, when each root perforated tape 18 is gripped roller 21 extruding with respect to going up of adjacent following gripping roller 20a, form with groove 33 and to have rectangle or square cross section is compared, stop the perforated tape 18 and the open end edge of groove 33 to push strongly.

(8) each is positioned at along the guide member 19 in the gripping point downstream of the paired roller 16 of cotton fiber bundle F moving direction and is set up by this way, and promptly the curved surface 19b and the gap of external peripheral surface that grips roller 20a down are than the curved surface 29c of each suction tube 29 with the gap of the external peripheral surface of gripping roller 20a is big down.Therefore, when the cotton flyings that enter each curved surface 29c gap that grips down roller 20a and suction tube 29 are caught by groove 33 simultaneously by gripping point, cotton flyings are easy to from curved surface 19b and grip down the gap, downstream between the external peripheral surface of roller 20a be eliminated.

Preferred embodiment is not limited to above form, and following distortion is arranged.

The groove 33 that the surface (circumferential surface) of gripping roller 20a upward forms under each there is no need to the same evenly formation on whole surface of preferred embodiment.For example, shown in Fig. 6 (a).The groove 33 of smallest number can form on each surface that grips roller 20a down.The degree of depth is arranged is four of 0.7mm or eight groove 33 situations with the tested accumulation with inhibition fiber (cotton flyings) of the mode identical with preferred embodiment to grip roller 20a down.So in both cases, accumulation rate was 0% at the 6th day.Therefore, peanut groove 33 or have only a groove 33 to form.Equally in these cases, the width that has of groove 33 preferably is less than or equal to 1.0mm.If groove width surpasses 1.0mm, each perforated tape 18 is gripped the gripping point place that roller 21 is pressed against continuous following gripping roller 20a by corresponding going up, and the flexing amount of perforated tape 18 is excessive.This causes perforated tape 18 tired easily.Yet, the width of groove 33 to be arranged to less than 1.0mm, the flexing amount can be inexcessive, and durability improves.

Groove 33 there is no need to make up by this way, and promptly each groove 33 extends along the whole width that each grips roller 20a down.Shown in Fig. 6 (b), groove 33 can be configured to corresponding to whole width along the middle part extension that grips roller 20a width down.

The shape of groove 33 is not to form by the gear cutting, but can be by rolling formation.When the quantity of groove 33 after a little while, groove 33 can form by linear mobile cutting blade.

When the quantity of groove 33 was determined, the width of all grooves 33 there is no need all identical.Yet the groove 33 of making same widths is easy.

The external diameter that grips rod 20a down is not must be 24mm, can less than or greater than 24mm.

Suction socket 29a is positioned in the upstream of the gripping point of fiber bundle F in a preferred embodiment.In addition, suction socket can be set at and grip the some downstream.In this case, replace guide member 19, use the pipe that wherein is formed with suction socket, aforementioned tube links to each other with tube connector 30 with suction tube 29 identical forms.

As shown in Figure 7, guide member 19 can be removed, and each perforated tape 18 can center on and following of gripping among the roller 20a in the suction tube 29,

Suction tube is set at the upper back of drawing-off machinery 12 in the spinning frame, the suction (negative pressure) that applies suction tube give the tube connector 30 of suction tube 29 and similarly pipe can be set at suction tube 29 above.

Rotating shaft 20 and suction tube 29 are not to be designed to unit of per four ingots, can be designed to have between roller stand 23 a plurality of spindles as a unit (for example, eight spindles), or unit of two spindles.Selectable, all unit there is no need the spindle of equal number.Spindle between the roller stand 23 can be divided into the group (for example, six ingots and two ingots) of varying number spindle, and two types unit can be assembled respectively.

As long as the parts of each suction tube 29 have along gripping the curved surface that roller 20a periphery extends down, the type of suction tube 29 do not limit to preferred embodiment in type.For example, the shape of suction tube 29 can be as disclosed type among the above-mentioned publication No 2003-1 13540.

Forming the rotating shaft 20 that grips roller 20a down thereon can be used by all spindles, and by a motor by the serial gear drive on the gear end that is positioned at machinery, as the preceding bottom roll 14 on the drawing-off gap 12.

Perforated tape 18 and suction tube 29 can be arranged on the top,

The present invention is not the drawing-off machinery that must be used for spinning machine, and the drawing-off that can use the Other spinning machines tool mechanically.

Claims

1. the fiber bundling apparatus in spinning machine is used for the collection of filaments with drafted partial draft, and this device comprises:

Feeding portion is arranged on the drawing-off portion right downstream of final feeding roller, and comprises a pair of gripping roller;

Suction section has a guide surface, and this guide surface comprises one along the suction socket of fibre bundle moving direction in the gripping point upstream of these feeding parts; With

Perforated tape, described perforated tape along under this guide surface sliding mode around one that grips in the roller,

Wherein suction section comprises that the described gripping roller that contains groove extends so that corresponding with the width of perforated tape along the direction that the circumferencial direction with a gripping roller intersects along gripping the curved surface that the roller periphery extends, and the degree of depth of described groove is more than or equal to 0.04mm.

2. device as claimed in claim 1 is characterized in that the degree of depth of groove is more than or equal to 0.05mm.

3. device as claimed in claim 1 is characterized in that the degree of depth of described groove is less than or equal to 1.0mm.

4. as the described device of one of claim 1 to 3, it is characterized in that described channel shaped becomes along the axis direction that is parallel to described gripping roller and extends.

5. as the described device of one of claim 1 to 3, it is characterized in that described channel shaped becomes with respect to the axis direction that grips roller.

6. as the described device of one of claim 1 to 3, it is characterized in that the width of described groove open end is wideer than the width of bottom.

7. as the described device of one of claim 1 to 3, it is characterized in that described groove is one of a plurality of grooves, this groove is formed with the fixed knot distance that the gear cutting forms, and the area occupation ratio of external peripheral surface is more than or equal to 40%.

8. a fine spining machine comprises as the described device of one of claim 1 to 3.