CN1026712C - Process and apparatus for feeding at two drawn rovings to respectives ring spinning stations - Google Patents

Abstract

In order to avoid the need for providing expensive fine rovings, a process is proposed in which two rovings are supplied to respective ring spinning stations (3). A common primary roving (2) is drawn and is subsequently divided into two separate rovings (2a, 2b) for feeding respective ring spinning stations (3). The primary roving (2) is divided into two separate rovings (2a and 2b) by conveying means (11), which comprise two juxtaposed suction zones (12a, 12b), which extend in the direction of conveyance.

Description

Process and apparatus for feeding at two drawn rovings to respectives ring spinning stations

The present invention relates to a kind of equipment that at least two drawing-off rove is fed corresponding ring spinning position.

Has a drafter before each spinning position of known ring spinner, in drafter, a meticulous rove is extracted out from a thread-carrier, delivers on the bobbin at the steel traveler that moves on the rings by one then, and this bobbin non-rotatably is installed on the driven spindle.In this machine, steel traveler whenever rotates a circle one of yarn generation is picked up, and the speed difference between guiding bobbin and the trailing steel traveler will determine the coiling speed of yarn.If supply with the weight of rove on unit length of drafter is not enough light, then the spun yarn of just impossible production high-quality.Just because of this reason, said rove is quite expensive preprocessing process of experience earlier, so that make a meticulous rove, its intensity and the uniformity can both satisfy the needs of ring spinning.

For these reasons, the purpose of this invention is to provide a kind of equipment, adopt this equipment, can provide the drawing-off rove to the spinning position of ring spinner, and not need to provide the meticulous rove of the sort of cost height, very light in weight.

The object of the present invention is achieved like this: an elementary rove that is used to feed two ring spinning positions is carried out drawing-off, and the elementary rove after the drawing-off is divided at least two rove, so that on the feeding ring spinning position separately.

Since the elementary rove after the drawing-off be divided into two stocks from rove, the meticulous rove that provides cost high more just is provided.Consequently the rove that is provided has suitably big unit weight, and it will bring adverse influence can not for the spinning situation of contiguous each spinning position.In addition, the frictional resistance between the unit fiber in the fibre structure is depended in the drawing-off of rove, therefore, the sizable elementary rove of weight can not wanted any special method and can be stretched, and still can satisfy whole requirements of making very fine yarn by several strands of rove that elementary rove was divided into.What need indicate is that the elementary rove after drawing-off is divided into after two strands, if necessary, can also further carry out share split.

Said method can realize by a kind of like this equipment, and it comprises the drafter and at least two the ring spinning positions that are used for elementary rove is carried out drawing-off, and this spinning position is immediately following after drafter.This equipment is characterised in that: a transport was arranged before the ring spinning position, be used for carrying the elementary rove of common drawing-off, this transport comprises the feed surface of a rotation, this feed surface comprises two independently suction zones at least, they one extend on the direction of carrying against a ground, they can be divided into elementary rove independently several strands of rove, and feed ring spinning position separately respectively.Why the elementary rove that enters above-mentioned two suction zones can be divided into two independently rove, is will be drawn back towards suction zone owing to being in two fibr tissues between the suction zone, thereby has formed two strands of yarns.

For making elementary rove by share split, must retrain them at least two suction zone motions arranged side by side, a transport with rotation feed surface so just need be provided.This feed surface can be made of a rotation belt or rotating disc.Optimal situation is the feeding roller that transport comprises a rotation, and this roller has at least two axial suction zones arranged side by side, and suction zone is in the continuity of the part circumferential surface of roller, is separated into two independently rove along the elementary rove of suction zone drawing-off.In this case, the elementary rove of drawing-off does not make the motion road of constraint through dropping to minimum.In the end, feeding roller can carry roller form by one in the drafter, and this drafter is used for the elementary rove of drawing-off.In the case, elementary rove is divided into two strands of independently rove immediately after drawing-off.

Can also assemble a nozzle of aiming at feed surface, in this case, also force two stocks from the air-flow that blows out in by nozzle of rove separately, simultaneously, to can not bring any adverse influence in the transmission of feed surface, and separate the alignment of the fiber in the rove in can the interfere with subsequent step the rove of separating.Because the fiber in the rove that separates will be inhaled into the district and remain on the feed surface, the air-flow that impels two strands of rove to separate makes rove be tending towards deflated state simultaneously.

Consider two distribution situations of separating rove, the preferably rectangular hole of nozzle, it extends along throughput direction, thereby can put in order the rove that has separated on long landline.

With common elementary rove be divided into several strands independently rove can realize like this: be provided with one and be bell mouth shape expand the non-suction mesozone open on throughput direction, this district is between two suction zones, and is tapered on the suction zone throughput direction.In this case, distance between two strands of rove that are separated from each other will increase gradually, be between the suction zone and non-suction zone line be toroidal on throughput direction will constitute a refractive surface, the air-flow from any one nozzle that is provided is reflected.Consequently this strand air-flow will be divided into the air-flow of the opposite separation of two bursts of directions, and this air-flow cross-current is taken away at suction zone to the rove that separates, and air-flow is put in order the rove that separates, and guarantees that the rove that has separated is in desirable deflated state.The suction zone that on throughput direction, is taper with separate rove move towards consistent, and also guarantee to make and suck air-flow and distribute consistently with residing environment facies, make it to distribute along the path that suction zone extends on throughput direction.For the elementary rove with drawing-off is separated into two rove that are separated from each other, partly need more intense suction in the acceptance of suction zone, and just passable in the function of only finishing guiding near near the suction the nozzle.Just because of this reason, the variation of the width of suction zone and should be able to guarantee to use ideally energy facing to the condition of nozzles that is positioned at the non-suction zone line in the middle of the suction zone is because it is more much bigger than jet to suck the required energy of air-flow.

Be divided at least two independently rove equably in order to ensure rove, and unlikely appearance is dangerous, when this danger was present in rove and separates, isolated rove may interact.Can provide a blast area at the non-suction zone line that is between the suction zone, for the air flow of the feed surface of flowing through is carried, the suction zone that this air flow is transferred the surface suitably separates, and this suction zone of suction.At this moment, the elementary rove that has soon entered the said flow zone can carry out share split ideally.

Move if blast area has produced on throughput direction, then air flow also will change to the effect that rove produced of separating.From minimum to the influence that the separation of elementary rove produces near the air flow of the blast area of the output end of suction zone, this moment, the separation of elementary rove was that the suction air-flow that is produced by suction zone is finished, but will be helpful to the arrangement of the rove separated at the air flow at the output position of suction zone.Just because of this, if blast area extend to always near suction zone near end, the then separation that can realize ideal.

If a blast area is combined with a nozzle, said blast area is that the air flow of the feed surface of flowing through is carried, said nozzle is the nozzle facing to feed surface, if nozzle faces zone line, it is right after after the delivery end of blast area along throughput direction, at this moment, can produce different effects from the air-flow of blast area and nozzle, and these two kinds effects are additional mutually, and the separation that so just can be elementary rove provides a highly desirable condition.In this case, will help to make elementary rove to be separated into two strands of independently rove from the air flow of blast area, and will be cotton helpful to the stretching, extension and the collection of the independently rove that is separated into by elementary rove from the air-flow of nozzle.

For with drawing-off elementary rove be divided into two strands of required energy and reduce to minimum, suction zone should shorten as far as possible.Suction zone can finish on the segment distance before the output of transport.Find that unexpectedly these two strands of rove are in case by after separating effectively, even no longer be subjected to any suction, their also channeling conducts on feed surface their this moments.

The rove of separating can make them carry out delivery on feed surface by a roller, and this roller matches with a delivery element, and the rove of separating is exerted pressure.Define the dispersal point that separates rove in the case, also help rove collection cotton simultaneously effectively.To act on the rove by the cross force of separating that air-flow produced, and make it to keep laterally moving towards output.In order to satisfy the drawing-off that elementary rove carries out high tractive force, need between the transmission roller of drafter, produce a chucking power, and this power is unnecessary for the guide clearance that the pressure roller is limited, and only needs to apply one at this place and prevents that the laterally mobile directed force of yarn is just passable.For this reason, when the separation rove that tightens during by above-mentioned guiding gap, their width can suitably not increase, because the section configuration of separation rove is consistent basically with the shape of the spun yarn that they are copied out, can on corresponding continuous loop ingot spinning position, successfully twist so separate rove.

If the pressure roller before the output of transport has jaw, then be applied to picking up and to extend along transport on the separation rove on the ring spinning position, jaw position between pressure roller and feed surface, like this, the fiber end of giving prominence to from separate rove is along with their rotation will be twined around separating rove.This is because the rotation of rove will cause the result of outstanding fiber end towards rove axis lateral shift.This skew causes by feed surface, and causes said fiber end to twine around separately rove.Outstanding fiber end causes the mutual deflation of fiber around the additional winding that separates rove, thereby has improved the alignment trend of fiber, and has suitably improved the intensity of yarn.

Because elementary rove is divided at least two strands independently during rove, fiber in the elementary rove will be drawn back, one end of single fiber is extracted out towards a suction zone, and its other end may be extracted out towards another suction zone, like this, at contiguous suction zone, these fibers have just formed and have connected the bridge that separates between the rove.These bridges will impel the rove of separation approaching mutually.If a stripping device is installed on the conveyor surface of non-suction mesozone, this mesozone is between suction zone and/or at follow-up circumferential section, can prevent thisly, separate rove because the stripping device allows to make transverse fiber only to send into one by the arch formation that single transverse fiber caused.

The stripping device can be that any in several forms can also comprise the elastic pressure element, but being the stripping device, the simplest situation comprises a stripping brush at least, the stripping brush moves it is meshed with feed surface, to prevent to be in two continuation campaigns that separate the fiber bridge between the rove.

Want in the spinning operation, to obtain the result of a satisfaction, the independent rove that the elementary rove of drawing-off is divided into must have constant proportion of fibers, and this ratio depends on that the elementary rove of drawing-off is with respect to two residing positions of suction zone and the distribution situation of fiber on the rove cross section.If a thread-carrier that matches with drafting unit in the drafter is installed, drafting unit is positioned to be carried before the roller, this thread-carrier can be regulated on the width in crack betwixt, thread-carrier the ratio of two strands of fibers in the independent rove regulated accurately, because can influence the distribution situation of fiber on the elementary rove bundle cross section.Adopt this method, can make fiber on the width of the elementary rove of drawing-off, obtain the distribution of a satisfaction,, can guarantee to obtain a gratifying separating resulting if elementary rove is proper with respect to the position selection of separator.

Fig. 1 is for feeding two drawing-off rove respectively the simplification front view of the present device of corresponding ring spinning position.

Fig. 2 is the partial cross sectional views of this equipment.

Fig. 3 is the profile along III among Fig. 2-the III line is cut open.

Fig. 4 is the enlarged partial view that passes through the high draw zone of drafter on the feeding plane.

Fig. 5 is and unit affinity shown in Figure 2, but made the present device partial enlarged view of some modifications.

Fig. 6 is the part sectioned view along VI among Fig. 5-the VI line is cut open.

Fig. 7 has represented the device view that another and Fig. 5 have similarly retrofited.

Fig. 8 is the part sectioned view along VII among Fig. 7-the VII line is cut open.

Fig. 9 another part sectioned view for cutting open along IX among Fig. 7-IX line.

The example that is provided with reference to the accompanying drawings below, the present invention will be described.

In the described embodiment of Fig. 1 to Fig. 4, has a common drafter 1 before two ring spinning positions 3, so that elementary rove 2 is carried out drawing-off.The ring spinning position is a common form, and it comprises a ring rail 4 that has rings on it, and steel traveler 6 is installed on the rings 5 movingly, and bobbin 8 can be driven by wharve 7.

Roller 9 in a pair of conveying roller 9 and 10 of drafter is feeding rollers, links with follow-up ring spinning position 3, and its diameter carries the diameter of roller 10 big than another, and they constitute transport 11 jointly, so that the elementary rove 2 of counter extensioin is carried.Transport 11 comprises two suction zone 12a and 12b, and they extend on throughput direction side by side, and the corresponding suction pieces 13 by on the feeding roller 9 has acted on a kind of suction on it, and this point can obviously be found out from Fig. 3.

Because drawing-off rove 2 is at apparent motion to two the suction zone 12a and the 12b of feeding roller 9, these two suction zones are being separated from each other near end at them at least, will be separated between two suction zone 12a and 12b by the fibre bundle that elementary rove 2 is formed, and draw back towards suction zone, so elementary rove 2 just is divided into two gangs of independently rove 2a and 2b, along transport 11 they are delivered to pressure roller 14, pressure roller 14 has constituted a jaw jointly with feeding roller 9, can prevent to separate laterally moving of rove 2a and 2b.This jaw can also be controlled and separate rove 2a and 2b by the inlet thread-carrier 15 in the throughput direction steering ring ingot spinning position 3 in the transport 11.

Two suction zone 12a and 12b can force elementary rove 2 to be separated into two independently rove 2a and 2b, they are fed ring spinning position 3 separately respectively again.This separation has brought lot of advantages.Only need common drafter 1 and two ring spinning positions are interrelated and get final product, the weight of elementary rove of feeding drafter can be two times of rove weight that are used to spin a spun yarn, like this, otherwise producing the step of the costliness of meticulous rove just can omit, and this omission will bring any adverse influence will can not for spinning operation result, because this moment, the fineness of yarn depended on the weight of separating rove 2a and 2b, and do not depend on the weight of elementary rove 2.

In order to help that elementary rove 2 is separated into independent rove 2a and 2b, between separation rove 2a and 2b, provide a nozzle 16, its direction faces feed surface.Like this, the air-flow of sending from nozzle 16 faces non-suction mesozone 17, and air-flow will impel two gangs of rove 2a and 2b to separate, and the distance between it is strengthened.Non-suction mesozone flare on outbound course, and suction zone 12a and 12b are corresponding tapered, and separation rove 2a and 2b are tightened gradually.Especially pressure roller 14 will prevent to separate rove 2a and 2b and laterally move, the section configuration of therefore guaranteeing rove and being had is similar to the section configuration of its spun yarn of copying, like this, the twisting process to the separation rove that carries out will be greatly facilitated on ring spinning position 3.This is based on the following fact, leaves the roomy rove bundle in the height stretching location in drawing-off zone, when rove is twisted, no longer need tighten, to have formed the circular cross section identical, like this with yarn in the trigonum, improve the arrangement trend of fiber, produced the bigger yarn of intensity.In addition, before the output 18 of transport 11, pressure roller 14 has spacing, and after roller 14, rove is sent to the rove guide groove on feeding roller, to guarantee like this to twine around rove from separating the outstanding rove fiber of rove 2a, 2b, because will extend to by pressure roller 14 and feeding roller 9 formed guiding gap locations always, outstanding fiber is through with the contact on the surface of feeding roller 9 and twines around separating rove 2a and 2b by picking up of being produced on the ring spinning position.

Want to make elementary rove 2 accurately to be divided into two independent rove 2a and 2b, need give and determine the position of good elementary rove earlier, and make the distribution appropriateness of fiber on the rove cross section with respect to two suction zone 12a and 12b.Drafting unit on a slubbing guide 20 and the drafter 1 can be linked, drafter 1 is positioned to be carried before the roller 9 and 10, constitute by drawing-off belt 19, said slubbing guide 20 can be regulated on the width in gap, this gap is that said thread-carrier limits, can pass through a governor motion 21, for example a screw device moves it.This moving will be to adjusting position and fiber the distribution situation generation very responsive influence on rove cross section of the elementary rove 2 of drawing-off with respect to suction zone 12a and 12b.

The embodiment that Fig. 5 and Fig. 6 are represented and Fig. 1 are different to embodiment shown in Figure 4, its basic difference be with a stripping device 22 after the direction of rotation of feeding roller 9 is contained in nozzle 16, it faces non-suction mesozone 17, and this mesozone 17 is between suction zone 12a and 12b, and the mesozone is along the throughput direction flare and expand gradually and open.In this embodiment, stripping device 22 is made up of a brush 23, and it can prevent to form the fiber bridge at two stocks between rove 2a and 2b.Otherwise after pressure roller 14, this fiber bridge will make separation rove 2a and 2b influence each other when twisting.When the fiber of elementary rove 2 is drawn back, the fiber that each root is laterally arranged all will only be incorporated under the effect of brush in the middle of one that separates among rove 2a and the 2b.Tighten owing to separate rove, after the separation rove left jaw, fiber did not need to make motion mutually through the triangular structure of a very wide bottom surface again.After leaving pressure roller 14 and feeding roller 9 formed gaps, separate rove 2a and 2b and can twist equably, do not disturb mutually each other, although rove was positioned on the feeding roller before arriving the guiding gap always, this point still can realize.

Fig. 7 also comprises a blast area 24 to embodiment shown in Figure 9, its zone line 17 between two suction zone 12a and 12b, and suction zone is tapered along throughput direction.This blast area 24 is extended the approaching end near suction zone always, provides compressed air by a compressed air hose 25.The air flow that penetrates from feeding roller 9 sends towards suction zone 12a and 12b near blast area 24 and turns back, and is divided into two stock air-flows and is sucked away then.Because the effect of this strand air-flow is split the fibre structure branch that enters the elementary rove 2 of feeding roller 9, and is drawn back towards two suction zone 12a and 12b, thereby forms two independently rove 2a and 2b.By two suction zone 12a, 12b and the blast area between them 24, force elementary rove 2 to be divided into two gangs of independently rove 2a and 2b, rove 2a and 2b are fed corresponding ring spinning position 3, face non-suction mesozone immediately following nozzle 16 ejection air-flows in blast area, it helps to make rove 2 to separate, and forces independently rove 2a and 2b to divide to open.

Claims (14)

1, a kind of equipment that at least two strands of drawing-off rove is fed corresponding ring spinning position respectively, it comprises the drafter and at least two the ring spinning positions that are used for elementary rove is carried out drawing-off, this spinning position is connected on after the drafter, it is characterized in that: a transport that is used for carrying the elementary rove of conventional draft was housed before the ring spinning position, transport comprises the conveyor surface feeding roller of a rotation, conveyor surface comprises the suction zone of two separation at least, suction zone extends on throughput direction side by side, its effect is that elementary rove is divided into several strands of independently rove, so that they are fed corresponding ring spinning position respectively.

2, according to the described equipment of claim 1, it is characterized in that: feeding roller carries roller to constitute by one in the drafter, and drafter is used for the elementary rove of drawing-off.

3, according to the described equipment of claim 1, it is characterized in that: which comprises at least a nozzle, nozzle and faces feed surface between the rove that separates.

4, according to the described equipment of claim 3, it is characterized in that: described nozzle is a rectangular nozzle, and it extends along throughput direction.

5, according to the described equipment of claim 1, it is characterized in that: suction zone is taper along throughput direction, and one is trumpet-shaped mesozone between suction zone along throughput direction.

6, according to the equipment described in the claim 1, it is characterized in that: a blast area is positioned at the zone line of non-suction zone, and blast area can be carried the air flow of the feed surface of flowing through, and the mesozone is between suction zone.

7, according to the described equipment of claim 1, it is characterized in that: blast area extends to the receiving terminal of contiguous suction zone always.

8, according to claim 3 and 7 described equipment, it is characterized in that: said nozzle faces the mesozone, and this zone tightens the output that is connected on blast area in the direction of carrying.

9, according to the described equipment of claim 1, it is characterized in that: suction zone stops on the segment distance before the output of transport.

10, according to the described equipment of claim 1, it is characterized in that: the roller that the separation rove is exerted pressure interrelates with transport.

11, according to the described equipment of claim 1, it is characterized in that: the pressure roller has spacing in output the place ahead of transport.

12, according to the described equipment of claim 1, it is characterized in that: on non-suction mesozone, two suction zone circumferential sections middle and/or that be right after thereafter have a stripping device to link mutually with feed surface.

13, according to the described equipment of claim 1, it is characterized in that: the stripping device is made up of a stripping brush at least.

14, a kind of equipment that at least two strands of drawing-off rove is fed corresponding ring spinning position respectively, it comprises a drafter, this mechanism carries out drawing-off to elementary rove, and interrelate with at least two ring spinning positions, has a rotation drafting unit, this equipment also comprises the device that elementary rove is divided at least two strands of independent rove, this device is between drafter and ring spinning position, a slubbing guide will interrelate with those drafting units at least, drafting unit is positioned to be carried before the roller, it is characterized in that: it is adjustable on the width that forms the gap that the installation slubbing guide makes it, those drafting units in thread-carrier and the drafter interrelate, and drafter is to be positioned to carry before the roller.

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