CN1550585A - Method of cutting yarn during doffing in spinning machine - Google Patents
Method of cutting yarn during doffing in spinning machine Download PDFInfo
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- CN1550585A CN1550585A CNA2004100445904A CN200410044590A CN1550585A CN 1550585 A CN1550585 A CN 1550585A CN A2004100445904 A CNA2004100445904 A CN A2004100445904A CN 200410044590 A CN200410044590 A CN 200410044590A CN 1550585 A CN1550585 A CN 1550585A
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- spindle
- yarn
- cop
- bobbin
- tail
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/38—Arrangements for winding reserve lengths of yarn on take-up packages or spindles, e.g. transfer tails
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
- D01H9/16—Yarn-severing arrangements, e.g. for cutting transfer tails; Separating of roving in flyer
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
A tail yarn cutting member is provided so as to be capable of ascending and descending along a blade. A spindle is stopped, with a roll or less of yarn wound at a position not higher than the portion where the tail yarn cutting member is in contact with a spindle base portion. Halfway through the pulling up of cop by a bobbin grasping device of a doffing device, yarn Y connected from the cop to a traveler is guided to a position between the tail yarn cutting member and the spindle base portion. Thereafter, the tail yarn cutting member is detached from the cop and lowered to grasp the yarn Y between the tail cutting member and the spindle base portion. Next, the spindle is rotated to attain a state in which an oblique winding formed on the cop extends straight from the top portion of the cop to the grasping position, and then the cop is raised by the bobbin grasping device, enabling the yarn Y to be reliably cut by a cutter portion.
Description
Technical field
The present invention relates to cut off method of yarn during a kind of spinning machine at for example ring spinner or ring doubling frame doffs.More especially, the present invention relates to cut off method of yarn during a kind of spinning machine in following type doffs, wherein the bobbin of sky is installed to and realizes batching of yarn when restarting machine after the spindle of cop being extracted from it by doffing device automatically.
Background technology
In the spinning machine of for example ring spinner or ring doubling frame, wherein yarn batches by steel traveler, in order under the full packages state, to carry out the bobbin change operation automatically, the yarn that need be connected on the roller part is connected in by steel traveler on the spindle, makes that yarn can automatically batch on bare bobbin when restarting machine after change of bobbins more.In order to address this need, in the spindle bottom tail yarn cut-off parts to be set traditionally, and below the spindle bottom, tail yarn winding part to be set; When acquisition full packages state, ring rail descends suddenly so that tilt coiling, and then yarn is reeled around tail yarn winding part, is connected to the yarn (tail yarn) of full packages yarn by the cut-out of tail yarn cut-off parts from tail yarn winding part when the full packages yarn is extracted.In ring spinner, term " roller part " refers to doffing device, and in ring doubling frame, it refers to the roller part of many group feeding yarns.
But in this cutting-off method, after doffing, the tail yarn of reeling around tail yarn winding part keeps on it, and when doffing repetition, residual amount of thread increases, and makes and need often carry out the processing of residual yarn.In addition, because tail yarn coiling length is very big, residual yarn is difficult to remove.
In order to solve the described problem of prior art, ((paragraph [0021] is to [0028] to see for example Japanese 2002-173837A to have proposed a kind of tail yarn cutting-off method, Fig. 1-3), wherein the yarn that is connected on the cop from steel traveler is kept by retaining part that can opened/closed, and wherein is connected to the operation that the yarn on the cop extracts cop by doffing device from retaining part and is cut off by cutter.
In the method that discloses in JP 2002-173837 A, use special tail yarn to cut off member, it is arranged to can be with respect to rising and descend from the upwardly extending spindle blade in spindle bottom.Shown in the application Fig. 9 B, the tail yarn cuts off the bobbin mounting portion 51 that member 51 equipment bobbin B are installed on it and is arranged on cutter part 51b below the 51a of bobbin mounting portion.At the interval that doffs, ring rail stops under following state, wherein is connected to yarn on the bobbin by the position below the contact portion by steel traveler, and on this contact portion, the tail yarn cuts off member and the spindle bottom is in contact with one another; Spindle stops, and a wherein about circle or the yarn that still less encloses are reeled on the position that is lower than described contact portion slightly.In this case, shown in the application Fig. 9 A, cop 53 is extracted by doffing device 52, and the tail yarn cuts off member 51 and cop 53 rises together in withdrawal process, and is directed to the tail yarn from the yarns Y that cop 53 is connected to the steel traveler 56 of ring rail 55 and cuts off the position between 54 bottom member 51 and the spindle.
After this, the rising of tail yarn cut-out member 51 is regulated by adjusting device.And shown in Fig. 9 B of the present invention, the tail yarn cut-out member 51 of throwing off with cop 53 drops to the position that it abuts spindle bottom 54.Then, be connected to yarns Y on the steel traveler 56 of ring rail 55 from cop 53 and be maintained at the tail yarn and cut off between member 51 and the spindle bottom 54, and cop 53 further rises, yarns Y is cut off device part 51b cut-out thus.
In addition, ((paragraph [0009] is to [0014] for example to see JP 10-317233A also to propose a kind of method, Fig. 1,2 and 9), wherein the yarn that is connected to cop from steel traveler remains on the fixedly underwinding flange that is arranged in the spindle bottom and is provided with between in its lower section the sleeve, so that can rise and descend, and wherein cause the yarn that is connected to retaining part from cop withdrawal process, to abut the marginal portion, so that do not use any cutter to cut off yarn.
When using the major diameter cop when the low number yarn of spinning in spinning or in twisting thread, it is littler than high-count yarn around the angle of the bobbin coiling angle of horizontal plane (promptly with respect to) to form the yarns Y of inclination coiling 53a, shown in Fig. 9 c.When under the very little situation of described winding angle, carrying out the method for JP2002-17837A, what can occur is, remaining on the tail yarn from yarns Y cuts off under the state between member 51 and the spindle bottom 54, between 53 further rising stages, the yarns Y that is connected to retaining part from cop 53 is reeled around bobbin mounting portion 51a and spindle at cop.In this case, yarns Y is not cut off device part 51b and cuts off, but tear fracture, consequently the yarn end of Duan Kaiing is bigger than the situation that yarn is cut off device part 51b cut-out.When disconnection yarn end became longer, rotating the energy requirement consumption of spindle institute when take-up increased, and discarded cotton dispersion of expecting occurred.When the increasing diameter added-time of cutter part 51b, yarns Y can be cut off on the position that abuts cutter part 51b.But this relates to the increase of batching operating period energy consumption.
Simultaneously, as the method that JP 10-317233A discloses, cause when cop is extracted yarn abut will tear fracture the marginal portion, have major diameter if yarn is low number and cop, from retaining part be connected to the yarn of cop and angle that the marginal portion forms very little.Therefore, yarn is tear fracture not in the edge part office, and the yarn end becomes very long, causes described same problem.
Summary of the invention
Consider that the described problem of prior art makes the present invention, the object of the present invention is to provide a kind of method of yarn of during spinning machine doffs, cutting off, even make at yarn it is to realize that also yarn cuts off under the big situation of low number and cop diameter, so that obtain short yarn end.
According to the present invention, be installed at the bobbin of sky and batch automatically the spinning machine of yarn when after the spindle of wherein extracting cop, restarting machine by doffing device, cutting off method of yarn during doffing comprises: forms on cop at the interval that is used to doff and be connected to yarn on the cop by spindle bottom and retaining member maintenance from steel traveler after tilting to reel, retaining member is installed in bottom the spindle upward so that can rise and descend; Keep cop by doffing device; Can rotate spindle with respect to cop in relative rotation under the state at spindle obtains to be formed on inclination on the cop thus and reels to extend to from cop top straight line and wherein realize by retaining member on the holding position that yarn keeps; And further make cop rise so that cut off yarn by doffing device.
In the present invention, the interval that doffs on cop, form tilt to reel after, be connected to yarn on the cop from steel traveler and remain on the spindle bottom and be installed between the retaining member on the spindle bottom, so that can rise and descend with respect to the spindle bottom.Then, cop keeps by doffing device, and spindle can rotate under the state in relative rotation with respect to cop, obtains to be formed on inclination on the cop thus and reels and extend to wherein on the position of realizing keeping by retaining member from the top straight line of cop.After this, cop rises so that cut off yarn by doffing device.When using the major diameter cop when the spinning that is hanging down the number yarn with in twisting thread, the yarn of form reeling is very little with respect to the winding angle of the bobbin angle of horizontal plane (promptly with respect to), if make that cop so rises, the thread segment under tilting to reel can be reeled around spindle.When extracting cop under this state, yarn partly or on the corresponding position, marginal portion (if any) cutting off with cutter, does not cause long relatively yarn end.But in the present invention, the yarn that is connected to cop from steel traveler is held the device maintenance, and cop changes so that straight line rises after extending at the coiling that tilts, make that can obtain yarn abuts the state of cutter part or marginal portion with wide-angle, and yarn cuts off by cutter part or marginal portion.Therefore, have major diameter, can realize cutting off, so that obtain short yarn end even yarn is low number and cop.
Preferably, retaining member comprises the bobbin mounting portion that bobbin is installed on it and is equipped with the tail yarn that is arranged on the cutter part below the bobbin mounting portion and cuts off member, the tail yarn cuts off member can be along rising and descend from the upwardly extending spindle blade in spindle bottom and can cutting off the yarn that keeps being connected to from steel traveler cop between member and the spindle bottom at the tail yarn, and this method is further comprising the steps of: stop ring rail under following state, wherein at the interval that doffs, the yarn that is connected on the cop by steel traveler cuts off position below the contact portion that member and spindle bottom be in contact with one another by the tail yarn; Under following state, stop spindle, wherein a circle or still less reel on the position of yarn below the tail yarn cuts off the contact portion that member and spindle bottom be in contact with one another of circle; During extracting cop, make tail yarn cut-out member and cop rise together; Guiding is connected to the yarn of steel traveler to the position tail yarn cut-out member and the spindle bottom from cop; Keep yarn between the tail yarn cuts off bottom member and the spindle, this tail yarn cut-out member rises by adjusting device adjusting tail yarn cut-out member and throws off with cop.
In this case, use the tail yarn be equipped with the bobbin mounting portion that bobbin is installed on it and be arranged on the cutter part below the bobbin mounting portion to cut off member as retaining member.Stop spindle, wherein a circle or still less the yarn of circle reel not being higher than on the position that the tail yarn cuts off the contact portion that member and spindle bottom be in contact with one another.Then, lappet is directed to retracted position, and then extracts cop by doffing device, makes in withdrawal process the yarn that is connected to steel traveler from cop be directed to the tail yarn and cuts off on the position between member and the spindle bottom.After this, regulate the rising that the tail yarn cuts off member by adjusting device, the tail yarn cuts off member throws off and decline from cop, and the tail yarn that yarn remains on and cop is thrown off cuts off between member and the spindle bottom.In this case, spindle rotates, and obtain to be formed on inclination on the cop and reel and extend on the position of realizing keeping, and then make cop further rise to cut off reliably so that cause yarn to be cut off the device part by doffing device by retaining member from the top straight line of cop.
In addition, can also adopt following configuration, wherein this method also comprise the steps: by doffing device after spindle is extracted cop, by lappet is turned back to yarning position, stretchingly be connected to the yarn of steel traveler, reel around spindle simultaneously from lappet; And once more the motion lappet to retracted position so that the bobbin of sky is installed on the spindle.
At this moment, kept by doffing device and spindle can be with respect to cop in relative rotation under the state at cop, spindle rotates so that cause inclination coiling straight line to extend, and obtains to center on from the Yarn relaxation ground that lappet extends to steel traveler the state of incidental looping thus.In this case, rise and when spindle is extracted, obtain to extend to the state that the yarn of steel traveler is reeled around spindle from lappet at cop, and since so the yarn of reeling accumulate, the bobbin of sky is installed in the difficulty that becomes on the spindle.After cop doffs, and before the bobbin with sky was installed in spindle, lappet turned back to yarning position, had eliminated the coiling of yarn thus but in the present invention.Then, empty bobbin is installed on the spindle, and lappet is arranged in not and the retracted position that doffs and interfere once more.Thus, can prevent that the yarn that extends to steel traveler from lappet from being kept by the bobbin of sky, and can avoid extending to the situation of the yarn of empty bobbin (spindle), make and when restarting machine, to begin batching of yarn with normal mode without steel traveler from lappet.
Can also adopt following configuration, wherein this method also comprises the steps: under following state the bobbin of sky is installed on the spindle, promptly using doffing device after spindle is extracted cop, ring rail rises, and makes to be connected on the steel traveler and to have moved on the position that yarn do not keep by bobbin around the yarn that spindle is reeled from lappet.
Because described configuration, at state that cop has doffed and before the bobbin with sky is installed in spindle, ring rail rises, and the yarn movement (reeling around spindle simultaneously) that extends to steel traveler from lappet is to the position that is not kept by bobbin when the bobbin with sky is installed in spindle thus.In this case, Kong bobbin is installed on the spindle.Can prevent that thus extending to steel traveler from lappet is kept by the bobbin of sky, and can avoid extending to the situation of the yarn of empty bobbin (spindle), make and when restarting machine, to begin batching of yarn with normal mode without steel traveler from lappet.
Description of drawings
Figure 1A and 1B, 2A-2C and 3A-3C are the diagrammatic side view that is illustrated in the major part of operating when doffing in the embodiment of the invention;
Fig. 4 is the schematic diagram of the structure of expression ring spinner;
Fig. 5 A is the diagrammatic side view (part is a section form) of spindle;
Fig. 5 B represents how the sectional view that the tail yarn cuts off member is installed;
Fig. 6 is the perspective illustration that the tail yarn cuts off member and spindle bottom;
Fig. 7 A and 7B are the schematic diagrames that concerns between expression spinning machine and the doffing device;
Fig. 8 is the sectional view that the tail yarn of another embodiment of the present invention cuts off member;
Fig. 9 A and 9B are the schematic section of expression prior art in the major part of doffing operation; And
Fig. 9 C is the major part schematic section that uses the situation of low number yarn and major diameter cop in the expression prior art.
The specific embodiment
Be applicable to the embodiments of the invention of ring spinner below with reference to Figure 1A-7B.Figure 1A and 1B, 2A-2C and 3A-3C are the diagrammatic side view that expression is operated when doffing; Fig. 4 is the schematic diagram of the structure of expression ring spinner; Fig. 5 A is the diagrammatic side view (part is a section form) of spindle; Fig. 5 B is that expression tail yarn cuts off the sectional view how member is installed; Fig. 6 is the perspective illustration that the tail yarn cuts off member and spindle bottom; And Fig. 7 A and 7B are the schematic diagrames that concerns between expression spinning machine and the doffing device.
As shown in Figure 4, promote drive system, drawing-off part and spindle drive system and carry out independent drive controlling.The turning cylinder 2 that constitutes drawing-off front roller 1 partly is via being arranged in turning cylinder 2 and being rotated by the toothrow wheel between the driving shaft 3 of main motor M rotation.Spindle 4 is by at spindle 4 be fixed on the spindle band (not shown) that extends between the rolling disk 5 on the driving shaft 3 and rotate.RPM ratio between front roller 1 and the spindle 4 is set with respect to spinning conditions (twist).The variable speed driver that use is driven by converter 6 is as main motor M.Be fixed on the turning cylinder 2 in case gear 2a that can unitary rotation near layout be suitable for exporting sensor S1 with the corresponding pulse signal of rotation of front roller 1.
Lifting device causes ring rail 8 and lappet angle 9 to rise and descend via line shaft 7.The lappet 10 that is equipped with twizzle 10a is installed on the lappet angle 9, and is directed on the steel traveler 11 that rings 8a slides by twizzle 10a from the yarns Y of front roller 1 output.
Lifting device is the structure of the disclosed device of JP7-300728A basically.Line shaft 7 is along vertical layout of the frame of spinning machine, and is installed on the line shaft so that can unitary rotation with the helical gear 12 (Fig. 4 only represents one of them) of arranged at predetermined intervals.Ring rail 8 is by a plurality of elevating lever stand-off 13 supportings (Fig. 4 only illustrates one of them).Elevating lever stand-off 13 is bearing on the frame (not shown), so that can vertical motion, and has threaded portion 13a in its underpart.Each threaded portion 13a is threadedly engaged with the nut member 14 that is rotatably supported on the desired height position of frame.On the periphery of each nut member 14, integrally formed helical gear (not shown) and helical gear 12 engagements.Also can cause lappet angle 9 and ring rail 8 one startings to rise and descend by similar rising/following descending mechanism.
Line shaft 7 is connected on the driving shaft of servo motor 15 via toothrow wheel (not shown), and its velocity of rotation and rotation direction can freely change.Servo motor 15 passes through control device 16 drive controlling via servo-driver 17.Servo motor 15 is equipped with rotary encoder 18.
Shown in Fig. 5 A, spindle 4 is via acting on by being fixed on bolster 20 rotatably supports on the step rail 19 in the middle of the bearing 21.Spindle 4 is equipped with spindle blade part 22 and is connected spindle shaft 4a on the following mid portion of spindle blade part 22 securely, and spindle shaft 4a is by bolster 20 rotatably supports.Except the 22b of spindle bottom, spindle blade part 22 is made by aluminum or aluminum alloy, and the spindle that is formed from a resin bottom 22b is installed on the lower part of spindle blade 22a.Spindle shaft 4a inserted mode system is in spindle blade part 22, and it is made by aluminum or aluminum alloy.
The tail yarn that is provided with as the retaining member that can rise and descend on the spindle blade 22a that extends upward above spindle bottom 22b cuts off member 23.Shown in Fig. 5 B, the tail yarn cuts off member 23 and is equipped with the bobbin mounting portion 24 that bobbin B is installed on it and is arranged on cutter part 25 below the bobbin mounting portion 24.Cutter part 25 comprises annular cutter member 25a separately and is equipped with a plurality of locking protuberance 25b so that fixing cutter member 25a.In this embodiment, the diameter of the fore-end of cutter member 25a is greater than the overall diameter of the end portion of bobbin B.
Under the tail yarn cut off member 23 and situation that spindle bottom 22b contacts, the flange 27 that is used as backstop was fixed on the spindle blade 22a on the relative position in its underpart and bobbin mounting portion 24.The overall diameter of flange 27 is slightly less than the interior diameter of recess 24a, and the tail yarn cuts off member 23 and slides along flange 27.Bobbin mounting portion 24 forms its overall diameter is reduced gradually to its upper end.
As Fig. 5 B and shown in Figure 6, on the upper part of end portion that cuts off member 23 at the tail yarn and the spindle bottom 22b relative a plurality of protuberance 28a that radially extend and be bonded with each other and 28b and recess 29a and 29b are set with described lower part.Therefore, the upper part of the end portion of tail yarn cut-out member 23 and spindle bottom 22b is equipped with a plurality of intermeshing teeth.What wish is that the height of protuberance 28a and 28b and the degree of depth of recess 29a and 29b approximately are 2 millimeters.
The end portion that the tail yarn cuts off member 23 forms a part that constitutes imaginary cone slope, and the center of rotation of this cone is a spindle 4, and its top be positioned at comprise on the periphery and plane of fast end portion perpendicular to spindle 4.The upper part of spindle bottom 22b also forms the part on the slope that constitutes imaginary cone, and the center of rotation of this cone is a spindle 4, and its top is positioned on the periphery and the plane perpendicular to spindle 4 that comprises described end portion.
Form annular groove 32 on the following outer surface of bobbin mounting portion 24, rubber ring 33 holds wherein, so that part is outstanding from groove 32.The installing force that rubber ring 33 constitutes increase power increases device, bobbin mounting portion 24 and bobbin B is linked together via assembling by this power.
Shown in Fig. 7 A and 7B, ring spinner is equipped with the doffing device (bobbin change device) 34 of known type.Doffing device 34 is equipped with the bar 35 that doffs, and it is equipped with bobbin holding device 35a, changes empty bobbin E on the peg 36a of feeding mechanism 36, feeding mechanism 36 be arranged in cop on step rail 19 and the spindle 4 below.Shown in Fig. 7 A, during doffing operation, be arranged on the line that the cop holding device 35a on the bar 35 that doffs represents along arrow and move, in the middle of will being installed in from the bare bobbin E that peg 26a extracts on the peg 37.Then bobbin holding device 35a move to spindle 4 on corresponding position, cop top on, and then it is installed on the peg 36a of feeding mechanism 36.Then, bobbin holding device 35a moves along the line shown in Fig. 7 A arrow once more, and move along the line shown in Fig. 7 B arrow turn back to ready position above the peg 36a before, the bobbin E of the sky on the middle peg 37 is installed on the spindle 4.
The result of calculation that operational store 41 comprises the memory (RAM) that can read and write again, obtain by the temporary storaging data of input unit 42 inputs, by CPU 39 etc.Operational store 41 is equipped with the stand-by power supply (not shown).
Then, with the explanation device operation of structure as mentioned above.Before the spinning machine operation, for example the spinning conditions of the yam count that will spin, spinning operating period spindle RPM, spinning length, lifting length and cop conical surface hypotenuse length is by input unit 42 inputs.Bobbin B is connected on the spindle 4 so that unitary rotation can be installed on the bobbin mounting portion 24 that the tail yarn cuts off member 23 in the lower part of bobbin B the time, and its top engages with locking component.
Shown in Figure 1A, after continuing spinning, when arrival full packages dwell time, form the top wire harness and reel, and then ring rail 8 decline suddenly tilts to reel (tubular coiling) 38a so that form on the cop (full packages) 38 that is connected on the spindle 4.After this ring rail 8 stops at following state, and wherein the yarns Y that is connected to cop 38 via steel traveler 11 is cut off position below the contact portion that member 23 and spindle bottom 22b be in contact with one another by the tail yarn.Then, brake, so that stop spindle 4, thereby the yarn that obtains a circle roughly cuts off the state of reeling on the position of the contact portion that member 23 and spindle bottom 22b be in contact with one another being lower than the tail yarn slightly, obtains the state shown in Figure 1B thus.
Then shown in Fig. 2 A, lappet 10 be arranged in its not with the retracted position of interfering that doffs on, and then cop (full packages) 38 extracted by doffing device 34.The tail yarn cuts off member 23 and cop 38 lifts together in withdrawal process, and is directed to the tail yarn from the yarns Y that cop 38 is connected to steel traveler 11 and cuts off on the position between member 23 and the spindle bottom 22b.When the tail yarn cuts off member 23 and cop 38 when lifting together, the yarns Y of reeling around spindle bottom 22b is moved along the outer surface of spindle blade 22a.When the tail yarn cuts off member 23 and cop 38 when arriving predetermined altitude together, by the compressing power of helical spring 26, the tail yarn cuts off member 23 and throws off with cop 38.
Then, shown in Fig. 2 B, the tail yarn cuts off member 23 and drops on its position that abuts spindle bottom 22b, and remains on the tail yarn from the yarns Y that cop 38 is connected to steel traveler 11 and cut off between member 23 and the spindle bottom 22b.After yarns Y remained between tail yarn cut-out member 23 and the spindle bottom 22b, spindle 4 can relatively rotate with respect to the cop 38 that keeps by doffing device 34.Then obtain to be formed on inclination coiling 38a on the cop 38 and extend to yarn from the top straight line of cop 38 and cut off the locational state that member 23 keeps, therefore obtain the state shown in Fig. 2 C by the tail yarn.At this moment, the twizzle 10a from lappet 10 extends to the yarns Y of steel traveler 11 loosely around cop 38 coilings.
After this, cop 38 further lifts by doffing device 34, and obtains yarns Y and abut the state of cutter part 25 with the wide-angles near 90 degree, and cuts off yarns Y reliably by cutter part 25.In addition, continue the operation of doffing device 34, and cop 38 is through doffing, till obtaining the state shown in Fig. 3 A.
Then, shown in Fig. 3 B, lappet 10 turns back to yarning position, eliminates the coiling of yarns Y around spindle 4 thus.Then, lappet 10 is backwards to retracted position once more, and shown in Fig. 3 C, acquisition is straight state via the yarns Y that lappet 10 extends to steel traveler 11.After this, Kong bobbin is installed on the spindle 4.
When making major diameter cop 38 so that during the low number yarn of spinning, the yarns Y that forms inclination coiling 38a is very little with respect to the winding angle (with respect to the angle of horizontal plane) of bobbin B, make that when cop 38 rises the part that is positioned at the yarns Y below the inclination coiling 38A can be reeled around spindle 4.When extracting cop 38 in this case, no matter the existence of cutter part 25, yarns Y is not cut off device part 25 and cuts off, but on cutter part 25 tear fracture, cause long yarn end.But in the present invention, cop 38 does not rise from the position shown in Fig. 2 B, but rises after changing, so that cause inclination coiling 38a straight line to extend, make yarns Y abut cutter part 25, cut off yarns Y reliably by cutter part 25 thus with wide-angle.
When bare bobbin was installed on the spindle 4 under the state shown in Fig. 3 A, promptly when the yarns Y that extends to steel traveler 11 from lappet 10 is loosely reeled around spindle, the accumulation of the yarn that is used to reel was difficult to bare bobbin is installed in spindle 4 relatively.But before bare bobbin being installed on the spindle 4, lappet 10 turns back to yarning position, eliminates the coiling of yarns Y thus, and then before bare bobbin is installed in spindle 4, lappet 10 is arranged in retracted position once more, wherein it not with the interference of doffing.Therefore, can prevent that the yarns Y that extends to steel traveler 11 from lappet 10 from being kept by bare bobbin, and can avoid extending to the situation of the yarns Y of bare bobbin, and when restarting machine, begin to batch yarns Y with normal mode without steel traveler 11 from lappet 10.
The end that is connected to the yarns Y on the steel traveler 11 remains on the tail yarn and cuts off between member 23 and the spindle bottom 22b, till doffing next time.Remaining on the tail yarn cuts off tail yarn between member 23 and the spindle bottom 22b and is connected to when doffing on the cop 38 and with spindle 4 next time and throws off.
This embodiment provides following advantage:
(1) during doffing, spindle 4 rotates, wherein the yarns Y that is connected on the cop 38 from steel traveler 11 keeps by cutting off member 23 with respect to the tail yarn that spindle bottom 22b rises and descends, cop 38 rises and also cuts off under following state, and the coiling 38a that promptly tilts extends to from the top straight line of cop 38 and cuts off member 23 by the tail yarn and realize the locational state that keeps.Therefore, even yarn is low number, the cop 38 of use has major diameter, and yarns Y abuts cutter part 25 with wide-angle (near the angle of 90 degree), and yarns Y is cut off by cutter part 25.Therefore, even yarn is low number, the cop 38 of use has major diameter, can realize cutting off, so that realize the shorter yarn end, and does not increase the overall diameter of cutter part 25.Therefore, rotate spindle 4 required energy consumption and dispersions in the time of can preventing to batch and discard cotton increase of expecting.
(2) the tail yarn cut-out member 23 that is equipped with cutter part 25 rises with cop 38 when doffing, and then descend, the yarns Y that is connected to steel traveler 11 from cop 38 remains on the tail yarn and cuts off between member 23 and the spindle bottom 22b thus, and cuts off by cutter part 25.Therefore reel so that the conventional apparatus of Bao Chiing is compared thus around spindle 4 with tail yarn wherein, do not need to reel the tail yarn repeatedly, make it can reduce the upward quantity of residual yarn (tail yarn) of spindle bottom 22b.In addition, the tail yarn that remains between tail yarn cut-out member 23 and the spindle bottom 22b is connected on the cop 38 when doffing next time, and throws off with spindle 4, makes that not needing to carry out the removal of tail yarn operates.
(3) cop 38 by doffing device 34 when spindle 4 is extracted, lappet 10 turns back to yarning position, be connected to steel traveler 11 and become straight around the yarns Y that spindle 4 is reeled from lappet 10 thus, then bare bobbin is installed on the spindle 4, wherein lappet 10 moves to retracted position once more.Therefore, can prevent that the yarns Y that extends to steel traveler 11 from lappet 10 from being kept by bare bobbin, and avoid extending to the situation of the yarns Y of bare bobbin (spindle 4), make when restarting machine, to begin to batch yarns Y with normal mode without steel traveler from lappet 10.
(4) yarns Y remains under its state by the protuberance 28a that radially extends on a plurality of upper parts that are arranged on end portion that the tail yarn cuts off member 23 and the spindle bottom 22 relative with described end portion and 28b and recess 29a and 29b bending.Therefore, very little even the tail yarn cuts off member 23 towards the pressure that spindle bottom 22b is subjected to, and can not with the operation interference of doffing device 34, also can keep yarns Y reliably.
(5) basal surface of the lower surface of the protuberance 28a of the end portion of formation tail yarn cut-out member 23 and recess 29a forms the part on the slope that constitutes imaginary cone, the center of rotation of cone is a spindle 4, and its top is positioned on the periphery and the plane perpendicular to spindle 4 that comprises end portion.When the masterpiece of pulling out yarn from retaining part was used on the yarns Y that spindle 4 coilings one enclose or still less enclose, radially outward the masterpiece of Zhi Xianging was used on the yarns Y.In this case, when the basal surface of lower surface that constitutes the protuberance 28a that keeps the surface and recess 29a is downward-sloping, the resistance ratios that acts on the edge of protuberance 28a and recess 29a on the yarns Y realizes that at horizontal plane the situation of yarns Y maintenance is bigger, and yarn is not easy to pull out.Therefore, being used to keep required pressure that the tail yarn of yarns Y cuts off member 23 is that the situation of level compares can be littler with keeping the plane.
(6) fixing coaxially for the tail yarn being cut off member 23 with respect to spindle bottom 22b, alignment device is set.Therefore, because the effect of alignment device, the tail yarn cuts off member 23 with spindle 4 coaxial rotation, makes to be not easy vibration to occur in rotation process, even also can realize stable rotation under the situation of high speed rotating.
(7) spindle bottom 22b is formed by resin, and the part of the tail yarn cut-out member 23 that engages with spindle bottom 22b is made of metal.If spindle bottom 22b and tail yarn cut off member 23 and all be made of metal, the tail yarn cuts off member 23 and cop 38 disengagements and descends; Under the situation of tissue of threads, when yarns Y remains between the 22b of retaining part and spindle bottom because the impact of retaining part effect, worry be that the end that yarns Y is held part cuts off.But,,, also can prevent because the yarns Y that keeps impulsive force to cause is held the phenomenon that the end of part cuts off even under the situation of tissue of threads because spindle bottom 22b is formed from a resin.
(8) pass through helical spring 26 towards the constant pressurized of spindle bottom 22b because the tail yarn cuts off member 23,, also can remain connected to the yarns Y on the steel traveler reliably even tail yarn cut-out member 23 is in light weight.In addition, when throw off with bobbin B bobbin mounting portion 24, because helical spring 26 causes the tail yarn to cut off member 23 downward pressurizeds, if cutting off between member 23 decrement phases at the tail yarn, yarns Y cuts off, the tail yarn cuts off member 23 and arrives the position that contacts and keep yarns Y with spindle bottom 22b fast.
Above-described embodiment should not be considered as has limitation.For example, the present invention also can carry out following modification:
Except initiatively turning over spindle 4 scheduled volume, cut off member 23 and the 22b maintenance of spindle bottom from the yarns Y that steel traveler 11 is connected on the cop 38 by the tail yarn, spindle 4 passive rotation can also be extended to by the state on the holding position of tail yarn cut-out member 23 realization maintenances from cop 38 straight lines so that obtain inclination coiling 38a.For example, under the situation of thick yarn (yam count is 10 or more), the tension force of yarns Y that can be by extracting cop 38 rotates spindle 4.Equally in this case, yarns Y abuts cutter part 25 with wide-angle (near the angle of 90 degree), and yarns Y is cut off by cutter part 25.In addition, because cop 38 does not rotate, can prevent to reel around spindle 4 from the yarns Y that twizzle 10a extends to steel traveler 11, and before bare bobbin is installed and lappet 10 is arranged in yarning position after, do not need to carry out once more the operation that motion lappet 10 arrives retracted position.
Except described modification, by doffing device 34 after spindle 4 is extracted cop 38 and before bare bobbin being installed on the spindle 4, when bare bobbin is installed, can use additive method to prevent that being connected to steel traveler 11 from lappet 10 also remains between bobbin B and the spindle 4 around the yarns Y that spindle 4 is reeled.For example, by lifting ring rail 8, can prevent that being connected to the yarns Y of also reeling around spindle 4 simultaneously on the steel traveler 11 from lappet 10 remains between bobbin and the spindle 4 when bare bobbin is installed.By lifting ring rail 8, be connected to steel traveler 11 and the yarns Y of reeling around spindle 4 simultaneously moves to when bare bobbin being installed on the spindle 4 yarn and do not remain on the position between bobbin B and the spindle 4 from lappet 10.Equally in this case, embodiment is such as described, lappet 10 moves to yarning position from retracted position, and be arranged in yarning position once more, after the yarns Y change directly that is connected to from lappet 10 on the steel traveler 11 bare bobbin is installed, yarns Y does not remain between bare bobbin and the spindle 4 when worrying being installed in bare bobbin on the spindle 4.Therefore, can avoid extending to the situation of the yarns Y of bare bobbin (spindle 4), and when restarting machine, begin to batch yarns Y with normal mode without steel traveler 11 from lappet 10.
Though in described embodiment, determine that by the position of the bar 35 that doffs tail yarn cut-out member 23 is thrown off with cop 38 during extracting cop 38 by doffing device 34, and determine that the tail yarn of throwing off cuts off member 23 and dropped to the maintained position of yarns Y that is connected to steel traveler 11 from cop 38, this can determine by some additive method equally.For example, can and begin to extract institute's elapsed time from maintenance cop 38 determines.Can also provide sensor for each spindle 4.
The structure that the tail yarn cuts off member 23 is not limited to following situation, wherein protuberance 28a and recess 29a be formed on spindle bottom 22b facing surfaces on.In addition, the structure of cutter part 25 is not limited to following situation, and wherein edge member 25a is parts separately.For example, as shown in Figure 8, can also be at the whole dish type marginal portion 24b (cutting off member 23) that forms of the lower end of bobbin mounting portion 24 as the tail yarn.The external configuration of marginal portion 24b is not limited to circular configuration; It can also be the zigzag configuration.
Except spring, the tail yarn cuts off member 23 so that the [that tail yarn cut-out member 23 and spindle bottom 22b are in contact with one another as pressing towards spindle bottom 22b can also to use magnet.For example, magnet is embedded in the upper surface of spindle bottom 22b, and magnet material (for example iron) is fixed on the tail yarn and cuts off on the lower surface of bottom of member 23.Can also on the either side of spindle bottom 22b and tail yarn cut-out member 23, magnet be set, perhaps cut off member 23 1 sides magnet is set, and magnetic material is set in spindle bottom 22b one side at the tail yarn.In this case, be fixed on the precalculated position of spindle blade 22a, to cut off the adjusting device that member 23 rises as regulating the tail yarn as the retaining ring or the pin of backstop.With cop between 38 rising stages, the tail yarn cuts off member 23 and abuts retaining ring or pin, throws off with cop 38 thus.
The basal surface of the end surfaces of protuberance 28a and 28b and recess 29a and 29b does not outwards need and is downward-sloping; They can also be levels.But so that when pulling out maintained yarns Y, the resistance of pulling out yarn is bigger in downward-sloping structure when power of effect, makes that yarn is more difficult to pull out.
Installing force increases device and is not limited to rubber ring 33; Can also be plate shape or Hookean spring material.Spring material is not limited to annular completely; Can also adopt the spring of partial cut-out form of springs.In addition, spring member can also be contained in the recess, recess is formed on the outer surface of bobbin mounting portion 24, and its arch section is stretched out.Button by the spring compressing can also be set.
The overall diameter of cutter part 25 can be less than the overall diameter of the bottom of bobbin B.In this case, do not worry that the yarns Y that is connected to steel traveler 11 from cop 38 is cut off during doffing and before remaining between tail yarn cut-out member 23 and the spindle bottom 22b.
During doffing, can be not limited to following situation in conjunction with the structure that spindle bottom 22b keeps being connected to the retaining member of the yarns Y on the cop 38 from steel traveler 11, promptly cut off the situation of member 23 as the tail yarn, after cop 38 rises overally, descend so that keep yarns Y.For example, can also adopt following structure, as the situation of JP10-317233A, the yarn that is connected to cop from steel traveler is set at the fixedly underwinding flange in the spindle lower part and the sleeve that rises in its lower section and descend keeps.In addition, except cutter part 25 is set, the marginal portion can also be set, during the doffing of cop 38, cause yarns Y to abut the marginal portion so that tear fracture.
For the drive system of spindle 4, the structure that the spindle band that twines around rolling disk 5 except the spindle quilt drives, can adopt the structure that drives spindle by the V-belt.In addition, can also adopt so-called single spindle drive system, wherein a motor is set for each spindle.
The present invention is not only applicable to ring spinner, also applicable to ring doubling frame.
Claims (6)
1. one kind is installed in to batch automatically when restarting machine after doffing device is from the spindle of wherein extracting cop at the bobbin with sky in spinning machine and cuts off method of yarn during yarn doffs, and this method may further comprise the steps:
Form on cop at the interval that doffs and to keep being connected to yarn on the cop from steel traveler by spindle bottom and retaining member after tilt reeling, retaining member is installed in bottom the spindle upward so that can rise and descend;
Keep cop by doffing device;
Can rotate spindle under the state in relative rotation with respect to cop at spindle, the inclination coiling that obtains thus to be formed on the cop extends to wherein by the state on the holding position of retaining member realization maintenance from cop top straight line; And
Further make cop rise so that cut off yarn by doffing device.
2. the method for claim 1, it is characterized in that, retaining member comprises the bobbin mounting portion that bobbin is installed on it and is equipped with the tail yarn that is arranged on the cutter part below the bobbin mounting portion and cuts off member, the tail yarn cuts off member can also can cut off the yarn that keeps being connected to from steel traveler cop between member and the spindle bottom at the tail yarn along rising and descend from the upwardly extending spindle blade in spindle bottom, and this method is further comprising the steps of:
Stop ring rail under following state, wherein at the interval that doffs, the yarn that is connected on the cop by steel traveler cuts off position below the contact portion that member and spindle bottom be in contact with one another by the tail yarn;
Under following state, stop spindle, wherein a circle or still less reel on the position of yarn below the tail yarn cuts off the contact portion that member and spindle bottom be in contact with one another of circle;
During extracting cop, make tail yarn cut-out member and cop rise together;
Guiding is connected to the yarn of steel traveler to the position tail yarn cut-out member and the spindle bottom from cop; And
Keep yarn between the tail yarn cuts off bottom member and the spindle, this tail yarn cut-out member is regulated the rising of tail yarn cut-out member by adjusting device and is thrown off with cop.
3. method as claimed in claim 2 is characterized in that this method also comprises the steps:
By doffing device after spindle is extracted cop, by lappet is turned back to yarning position, stretchingly be connected to the yarn of steel traveler from lappet, reel around spindle simultaneously; And
Once more the motion lappet to retracted position so that the bobbin of sky is installed on the spindle.
4. method as claimed in claim 2 is characterized in that this method also comprises the steps:
Bobbin with sky under following state is installed on the spindle, promptly using doffing device after spindle is extracted cop, make ring rail rise, thus from lappet be connected on the steel traveler and the yarn movement of reeling around spindle to the position that yarn is not kept by bobbin.
5. the method for claim 1 is characterized in that, this method also comprises the steps:
Make spindle turn over scheduled volume, wherein spindle can relatively rotate with respect to cop.
6. method as claimed in claim 2 is characterized in that, cuts off member to spindle bottom compressing tail yarn.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP134871/2003 | 2003-05-13 | ||
| JP134871/03 | 2003-05-13 | ||
| JP2003134871A JP4001052B2 (en) | 2003-05-13 | 2003-05-13 | Yarn cutting method during doffing in a spinning machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1550585A true CN1550585A (en) | 2004-12-01 |
| CN100335696C CN100335696C (en) | 2007-09-05 |
Family
ID=33028349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100445904A Expired - Fee Related CN100335696C (en) | 2003-05-13 | 2004-05-12 | Method of cutting yarn during doffing in spinning machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1477596B1 (en) |
| JP (1) | JP4001052B2 (en) |
| CN (1) | CN100335696C (en) |
| DE (1) | DE602004018422D1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058908B (en) * | 2006-04-17 | 2010-06-02 | 株式会社丰田自动织机 | Yarn end cutting method for spinning machine |
| CN106904491A (en) * | 2017-03-17 | 2017-06-30 | 杭州锐冠科技有限公司 | A kind of wire-insertion device |
| CN111441112A (en) * | 2020-05-09 | 2020-07-24 | 安徽日发纺织机械有限公司 | Spinning device and automatic doffing and feeding method thereof |
| CN112048793A (en) * | 2019-06-06 | 2020-12-08 | 拉克施米机械制造有限公司 | Warp floating and tilting device for automatic yarn connector assembly |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113604915A (en) * | 2021-07-07 | 2021-11-05 | 湖北天门纺织机械股份有限公司 | Adjusting system for doffing and yarn breaking of spinning frame and optimization method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5720613Y2 (en) * | 1973-12-27 | 1982-05-04 | ||
| IT1208008B (en) * | 1987-02-13 | 1989-06-01 | Savio Spa | MIXTURE COMPOSITIONS WITH WATER ABASE OF A HYDROPHILIC CATIONIC POLYMEO AND ANIONIC TENSION-ACTIVE AGENT, AND USEFUL AS FLOCCULATING AGENTS |
| DE19537687A1 (en) * | 1995-10-11 | 1997-04-17 | Spindelfabrik Hartha Gmbh | Precise yarn cutter at a spinning or twisting machine spindle |
| JP4284863B2 (en) * | 2000-12-07 | 2009-06-24 | 株式会社豊田自動織機 | Bottom thread cutting method and bottom thread cutting device in spinning machine |
-
2003
- 2003-05-13 JP JP2003134871A patent/JP4001052B2/en not_active Expired - Fee Related
-
2004
- 2004-04-16 EP EP20040009105 patent/EP1477596B1/en not_active Expired - Lifetime
- 2004-04-16 DE DE200460018422 patent/DE602004018422D1/en not_active Expired - Lifetime
- 2004-05-12 CN CNB2004100445904A patent/CN100335696C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058908B (en) * | 2006-04-17 | 2010-06-02 | 株式会社丰田自动织机 | Yarn end cutting method for spinning machine |
| CN106904491A (en) * | 2017-03-17 | 2017-06-30 | 杭州锐冠科技有限公司 | A kind of wire-insertion device |
| CN112048793A (en) * | 2019-06-06 | 2020-12-08 | 拉克施米机械制造有限公司 | Warp floating and tilting device for automatic yarn connector assembly |
| CN112048793B (en) * | 2019-06-06 | 2023-05-12 | 拉克施米机械制造有限公司 | Warp float tipping arrangement for automatic yarn splicing assembly |
| CN111441112A (en) * | 2020-05-09 | 2020-07-24 | 安徽日发纺织机械有限公司 | Spinning device and automatic doffing and feeding method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1477596A3 (en) | 2005-11-09 |
| JP2004339621A (en) | 2004-12-02 |
| CN100335696C (en) | 2007-09-05 |
| EP1477596A2 (en) | 2004-11-17 |
| DE602004018422D1 (en) | 2009-01-29 |
| EP1477596B1 (en) | 2008-12-17 |
| JP4001052B2 (en) | 2007-10-31 |
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