CN1702210A - Method for removing residual yarn from spinning machine - Google Patents
Method for removing residual yarn from spinning machine Download PDFInfo
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- CN1702210A CN1702210A CN 200510068747 CN200510068747A CN1702210A CN 1702210 A CN1702210 A CN 1702210A CN 200510068747 CN200510068747 CN 200510068747 CN 200510068747 A CN200510068747 A CN 200510068747A CN 1702210 A CN1702210 A CN 1702210A
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Abstract
This method for removing the residual thread in a loom is provided by being equipped with a tail thread-cutting member 23 at a blade 22a as capable of ascendable and descendable, also installing the tail thread-cutting member 23 in a state of fitted/inserted with a bobbin B as relatively rotatable with a spindle 4 and in a state of ascended to a prescribed height from a fitted position with the spindle 4 together with the bobbin B grasped by a bobbin-grasping device 35a, stopping a ring rail 8 in a state of winding the thread Y at a position at or lower than the grasping part of the tail thread-cutting member 23 on stopping doffing, starting the doffing action by a doffing device in that state, grasping the tube thread 38 by the bobbin-grasping device 35a, stopping once the doffing device in the ascended state of the tail thread-cutting member 23 to the prescribed height together with the bobbin B and rotating the spindle 4 in that state, i. e., the state of opening the grasping part.
Description
Technical field
The present invention relates to a kind of for example unnecessary method of yarn of ring throstle or ring ingot twisting mill of spinning machine that is used for removing.More particularly, the present invention relates to the method that the residual yarn in a kind of spinning machine that will be provided with the yarn gripping elements on spindle is removed, this yarn gripping elements is provided with and is used to grip the grip portions and the bobbin mounting portion that bobbin is installed that is connected to the yarn of cop from steel traveler, and this cop cooperates with the spindle sides grip portions.
Background technology
In spinning machine, for example in the ring throstle or in the ring ingot twisting mill, yarn is batched by steel traveler so that carry out the drum-changing operation automatically when expiring the bobbin state, the yarn that is connected on the roller part must be connected on the spindle, and yarn can batch on the empty bobbin automatically when restarting spinning machine with box lunch by steel traveler after creeling more simultaneously.In order to meet this requirement, generally to be provided with tail yarn cutting part on the spindle base portion and on the spindle base portion, to be provided with tail yarn reel-up; After having obtained full bobbin state, the ring rail that descends fast is so that tilt to batch, and yarn is wound up on the tail yarn winding part then, and the yarn (tail yarn) that is connected on the full packages yarn from tail yarn winding part is cut by tail yarn cutting part when the full packages yarn is pulled out.In ring throstle, term " roller part " is meant drafting system, in ring ingot twisting mill, is meant the roller part of many group feeding yarns.
Yet in this cutting method, the tail yarn that is wound up into tail yarn winding part is still stayed after doffing on this tail yarn winding part, and the quantity of residual yarn increases along with the repetition of doffing, thereby must often carry out the processing of residual yarn.In addition, because the coiling length of tail yarn is very big, so residual yarn is difficult to remove.
In order to solve the above problems, a kind of spinning machine has been proposed, be connected to from steel traveler wherein that yarn on the cop is cut and the spindle of spinning machine is provided with the yarn gripping elements, this gripping elements is provided with cooperating with the grip portions of spindle sides and grips the grip portions be connected to the yarn on the steel traveler and the bobbin mounting portion (seeing for example JP2002-173837A) that bobbin is installed after cutting.
In the spinning machine that discloses in JP2002-173837A, use special tail yarn cutting element, this element is arranged to: make it possible to rise and descend from the upwardly extending spindle blade of spindle base portion relatively.Shown in Figure 10 B of the application, tail yarn cutting element 51 is provided with bobbin mounting portion 51a that bobbin B has been installed and the cutting part 51b that is provided with below the 51a of bobbin mounting portion.
In addition, during stopping to doff, ring rail stops in following state: be connected to yarn on the cop by steel traveler by the position below the contact portion that tail yarn cutting element and spindle base portion contact with each other; Spindle is stopped, and the reel for yarn of about coiling of reeling or be less than is around the position below above-mentioned contact portion slightly.In this state, shown in Figure 10 A of the application, cop 53 is pulled up by doffing device 52, rise on the way with cop 53 by described this tail yarn cutting element 51 that pulls up, be connected to yarns Y on the steel traveler 56 of ring rail 55 from cop 53 and be directed into a position between tail yarn cutting element 51 and spindle base portion 54.
Therefore by adjusting device, regulate the rise of this tail yarn cutting element 51 shown in Figure 10 B of the application, the tail yarn cutting element 51 of throwing off with cop 53 drops to against the position of this spindle base portion 54.Then, the yarns Y that is connected to the steel traveler 56 of ring rail 55 from cop 53 is held between tail yarn cutting element 51 and the spindle base portion 54, and this cop further rises, and yarns Y is cut part 51b cutting.Bobbin B is installed on the spindle of extracting cop 53 then; Afterwards, spinning machine restarts, and automatically yarns Y is batched on the bobbin B.Therefore, be connected at the yarn that grips between tail yarn cutting element 51 and the spindle base portion 54 and batch on the bobbin B that newly is installed on the spindle, and during the next one doffed, this yarn rose with the full bobbin (full packages yarn) that will remove from this spindle base portion 54 automatically.
In the method that in JP2002-173837A, discloses, during the next one doffs, risen with full bobbin (full packages yarn) by the yarn of tail yarn cutting element 51 and 54 grippings of spindle base portion, and remove from this spindle base portion 54.Yet, after restarting this spinning machine, before obtaining full bobbin state, yarn is held between tail yarn cutting element 51 and the spindle base portion 54, and the yarn (connection yarn) that is connected on the bobbin B can be torn because of some reason or other.When tearing off this connection yarn, yarn residual on spindle base portion 54 is not removed during the next one doffs.If repeat down, this will cause problem, make operator or residual yarn removal device to handle.
Summary of the invention
Make the present invention according to above-mentioned the problems of the prior art.Target of the present invention provides a kind of method that is used for removing at spinning machine residual yarn, even connect yarn during spinning because some reason or other reason are torn, can prevent that also residual yarn is accumulated on the spindle base portion, simultaneously needn't the operator or the residual yarn removal device carry out any operation.
In order to obtain above-mentioned purpose, the invention provides a kind of method that is used for removing at the residual yarn of spinning machine, the spindle of this spinning machine is provided with the yarn gripping elements, and this gripping elements has the operation that pulls up cop by doffing device and cuts the function that is connected to the yarn on the cop from steel traveler.This yarn gripping elements is provided with and grips grip portions that is connected to the yarn on the steel traveler and the bobbin mounting portion that bobbin is installed after the cutting under cooperating by the spindle sides grip portions.Be elevated to this yarn gripping elements spindle rotation relatively under the state that cooperates position one predetermined altitude that spindle is installed apart from the yarn gripping elements at the yarn gripping elements.This cop is gripped by doffing device, and the yarn gripping elements rises to predetermined altitude with bobbin, highly locates the spindle rotation relatively of this bobbin at this, and this spindle rotates with two grip portions of opening.
In addition, the invention provides a kind of method of removing the residual yarn in the spinning machine, the spindle of this spinning machine is provided with the yarn gripping elements, and this yarn gripping elements has the operation cutting that pulls up cop by doffing device is connected to the yarn on the cop from steel traveler function.The yarn gripping elements is provided with and grips grip portions that is connected to the yarn on the steel traveler and the bobbin mounting portion that bobbin is installed after the cutting that cooperates by the spindle sides grip portions.Be elevated in the state of a predetermined height that cooperates the position that spindle is installed apart from the yarn gripping elements spindle rotation relatively of this yarn gripping elements at the yarn gripping elements.After doffing by doffing device, empty bobbin is installed on the spindle, spinning machine begins to reel the yarn of predetermined quantity to empty bobbin before stopping spinning machine then.This bobbin grips by doffing device, and the yarn gripping elements rises to this predetermined altitude with bobbin, highly locates bobbin spindle rotation relatively at this.After two opening retained part rotary spindles, this yarn gripping elements and bobbin are got back to and are batched the position so that discharged the yarn that is gripped by doffing device before restarting spinning machine.
Description of drawings
In the accompanying drawings:
Figure 1A-1C is used to be illustrated in the letter of operating when doffing according to first embodiment to show side view;
Fig. 2 A and 2B are used to illustrate the letter of operating when doffing according to first embodiment to show side view;
Fig. 3 illustrates the structure of ring throstle;
Fig. 4 A is office's cutaway view of spindle, and Fig. 4 B illustrates tail yarn cutting element and how to install;
Fig. 5 is that perspective view is shown in the letter of tail yarn cutting element and spindle base portion;
Fig. 6 A and 6B go out the relation between spinning machine and the doffing device;
Fig. 7 A and 7B are the side views that is illustrated in the operation when doffing according to a second embodiment of the present invention;
Fig. 8 be according to a second embodiment of the present invention tail yarn cutting element and spindle the office cutaway view;
Fig. 9 be according to another embodiment of the invention tail yarn cutting element and spindle the office cutaway view; With
Figure 10 A and 10B are the cutaway views of prior art.
The specific embodiment
(first embodiment)
Below, the first embodiment of the present invention that is used for ring throstle is described with reference to Figure 1A-6B.Figure 1A-1C and Fig. 2 A-2B are that side view is shown in letter, are illustrated in the operation when doffing; Fig. 3 is a schematic diagram, shows the structure of ring throstle; Fig. 4 A is that side view is shown in the letter that the office of spindle is cutd open; Fig. 4 B is a cutaway view, tail yarn cutting element is shown how installs; Fig. 5 is the perspective view of tail yarn cutting element and spindle base portion; With Fig. 6 A and 6B be schematic diagram, the relation between spinning machine and the doffing device is shown.
Ring throstle comprises the lifting drive system, and this system is configured to: make that can be independent of drawing-off part and spindle drive system unites and be driven control.As shown in Figure 3, the rotating shaft 2 that constitutes the front roller 1 of drawing-off part rotates by the one group of gear (not shown) that is provided with between rotating shaft 2 and the driving shaft 3 that driven by main motor M.Spindle 4 is by at spindle 4 be fixed to the spindle band (not shown) rotation of stretching between the rolling disk 5 on the driving shaft 3.RPM ratio between front roller 1 and spindle 4 is set according to spinning conditions (adding twisting count).Use the variable speed electric motors, particularly that drives by converter 6 as main motor M.Be fixed to making it possible to whole rotation near the gear 2a on the rotating shaft 2, be provided for being applicable to the sensor S1 of the rotation output pulse of front roller 1.In other words, this lifting drive system is independent of the drawing-off part and the spindle drive system system is driven control.
This lifting device causes ring rail 8 and lappet angle section 9 to rise and descend by jackshaft 7.(see Figure 1A-1C) be equipped with twizzle 10a, the yarns Y of sending from front roller 1 is directed into steel traveler 11 by twizzle 10a, and described steel traveler slides on rings 8a to be installed to lappet 10 on the lappet angle section 9.
Lifting device is identical with the apparatus structure that JP7-300728A discloses basically; Elevating lever stand-off 13 is supported for and can vertically moves relative to the frame (not shown) that spins, and along with the rotation of jackshaft 7 is risen and descended, this ring rail 8 is fixed to the upper end of elevating lever stand-off 13 to this lift stand-off 13 with ring rail 8.By similar rising/following descending mechanism, lappet angle section 9 can also be caused rising synchronously and descending with ring rail 8.By one group of gear (not shown), jackshaft 7 is connected to the driving shaft of servomotor 15, can freely change the rotary speed and the direction of rotation of jackshaft 7.These servomotor 15 controlled devices 16 pass through servo-driver 17 and drive controlling.This servomotor 15 has been equipped rotary encoder 18.
Shown in Fig. 4 A, by bearing 21 by bolster 20 these spindles of rotatable support that are fixed on the step rail (down rail) 19.Spindle 4 is provided with spindle blade part 22 and tightly is connected to ingot axle 4a on the following middle body of spindle blade part 22, and ingot axle 4a is supported by bolster 20 rotations.Except spindle base portion 22b, this spindle blade part 22 is formed by aluminium or aluminium alloy, and the spindle base portion 22b that is formed by resin is installed among the lower part 22a of this spindle blade.This spindle axis 4a embeds and is molded in the spindle blade part 22.
On the spindle blade 22a that upwards exceeds spindle base portion 22b extension, be provided with tail yarn cutting element 23, as the yarn gripping elements that can rise and descend.Shown in Fig. 4 B, this tail yarn cutting element 23 is provided with bobbin mounting portion 24 that bobbin B is installed and the cutting part 25 that is provided with below bobbin mounting portion 24.This cutting part 25 comprises independently annular cutting element 25a and is provided with a plurality of locking ledge 25b that are used for fixing this cutting element 25a.In this embodiment, the diameter of the fore-end of cutting element 25a is greater than the external diameter of the end portion of bobbin B.
This bobbin mounting portion 24 forms cylindrical structural, and side has the groove 24a that is used to hold disc spring 26 within it.The end portion of this tail yarn cutting element 23 keeps contacting with spindle base portion 22b, and making can be with tail yarn holding between tail yarn cutting element 23 and spindle base portion 22b.
The axle collar 27 is fixed on the spindle blade 22a.This axle collar 27 is fixed on the relative position in its underpart and bobbin mounting portion 24 under the state of tail yarn cutting element 23 contact spindle base portion 22b.Less than the internal diameter of this groove 24a, tail yarn cutting element 23 slides along the axle collar 27 external diameter of this collar 27 slightly.This bobbin mounting portion 24 is configured as: make its external diameter reduce to its upper end gradually.This disc spring 26 is contained among the groove 24a, the lower end of while its lower end abutment groove 24a, and its upper end is against the lower end of the axle collar 27.
Shown in Fig. 4 B and 5, on the end portion of this tail yarn cutting element 23 with on the upper part of the spindle base portion 22b relative with above-mentioned end portion, be provided with a plurality of ledge 28a that is engaged with each other and 28b and groove 29a and 29b that radially extend.Therefore the end portion of this tail yarn cutting element 23 and the upper part of spindle base portion 22b are provided with a plurality of teeth that are engaged with each other.Ledge 28a and groove 29a have constituted the grip portions of tail yarn cutting element 23, and ledge 28b and groove 29b have constituted the grip portions on spindle sides.
The end portion of this tail yarn cutting element 23 is configured as: a feasible part that constitutes the inclined-plane of an imaginary cone, the pivot of this imaginary cone is a spindle 4, and its summit is positioned on the plane of outer rim perpendicular to spindle 4 of containing above-mentioned end portion.The upper part of this spindle base portion 22 also constitutes: a feasible part that forms the inclined-plane of an imaginary cone, the pivot of this imaginary cone is a spindle 4, and its summit is positioned on the plane of outer rim perpendicular to spindle 4 of containing above-mentioned end portion.
Shown in Fig. 4 B, in the outer fringe surface of the bottom of bobbin mounting portion 24, be formed with cannelure 32, wherein hold rubber ring and make that part is stretched out from groove 32.This rubber ring 33 has constituted power increases device, is used to increase the power that bobbin mounting portion 24 and bobbin B cooperate together.
Shown in Fig. 6 A and 6B, ring throstle is equipped with and carries out the doffing device (drum-changing device) 34 that all spools are changed types known the time.This doffing device 34 is provided with the bar 35 that doffs, and this bar 35 that doffs is equipped with bobbin grip device 35a, and the empty bobbin E on the pin 36a of the feedway 36 that will be provided with below step rail 19 changes.As shown in Figure 6A, during doffing operation, this bobbin grip device 35a that is arranged on the bar 35 that doffs moves along the line shown in the arrow, will be installed to from the empty bobbin E that pin 36a extracts on the middle pin 37.Then, this bobbin grip device 35a moves to the position corresponding to the top of the cop on the spindle 4 38, and the line along Fig. 6 B indication after gripping this cop 38 moves, and extracts the cop 38 on spindle 4, attaches it to then on the pin 36a of feedway 36.Then, this bobbin grip device 35a moves along the line of the arrow of Fig. 6 A indication once more, and moves so that before getting back to holding fix on the pin 36a, the empty bobbin E on the middle pin 37 is installed on the spindle 4 at the line along the arrow indication of Fig. 6 B.
As shown in Figure 3, control device 16 is provided with CPU (central processing unit) 39, program storage 40, operational store 41 and input unit 42.This CPU39 operates according to the preset program data of storage in program storage 40, and controls main motor M and servomotor 15 by interface and drive circuit (not shown).In addition, this control device 16 is also controlled described doffing device 34.
Described program storage 40 comprises read-only storage (ROM), above-mentioned routine data and the multiple necessary data clauses and subclauses that are used to move of this read-only storage storage.This routine data comprises and is used for batching the control program that operating period controls main motor M and servomotor 15, be used for the control program controlling the control program of doffing device during the doffing operation (drum-changing operation) after stopping and being used to control main motor M doffing.The several data clauses and subclauses comprise spinning conditions, yam count for example to be spun and carry out the data of the cop conical surface up to the number of times that obtains full bobbin state at the spindle RPM of spinning operating period with corresponding to ring rail 8.In addition, be used for the procedure stores of temporary transient driving spindle 4 predetermined period of times during doffing operation at program storage 40.
This CPU39 is connected to sensor S1 by interface and goes up and rotary encoder 18.This CPU39 calculates the spinning amount according to the output signal from sensor S1.This CPU39 controls rising and descending motion corresponding to spinning conditions that this servomotor 15 makes that this ring rail 8 is scheduled to according to from the output signal of rotary encoder 18 and the direction of motion and the position of numerical value identification ring rail 8.In addition, CPU39 is according to the stage of discerning doffing operation from the signal of doffing device 34.
During doffing operation, control device 16 control doffing devices 34 make cop 38 locate not pulled up from spindle 4 a time, but when reaching predetermined altitude, temporarily stop, highly locating tail yarn cutting element 23 spindle 4 rotations relatively at this, cooperate simultaneously bobbin B is installed.Above-mentioned predetermined altitude is that tail yarn cutting element 23 does not have the height that separates with bobbin B because of the effect of disc spring 26.Highly locate at this, obtained such state: tail yarn cutting element 23 and spindle base portion 22b interval that is to say that in this state, the grip portions of spindle base portion 22b and tail yarn cutting element 23 is opened.In this state, control device 16 makes spindle 4 rotation predetermined period of times.Separate by centrifugal force from spindle base portion 22b for the yarn that will be adhered on the spindle base portion 22b, described predetermined period of time is necessary, and the described scheduled time is by test acquisition and predefined.Described predetermined period of time is 5 seconds or littler, is generally 1-2 second.
In addition, the operation of this device, such as mentioned above.Before the operation spinning machine, the spinning conditions data are for example treated the yarn number, at the spinning spindle RPM of operating period, and spinning length, lifting length, cop conical surface hypotenuse length is by input unit 42 inputs.Bobbin B is connected on the spindle 4 so that can have the top of locking member to rotate with joint in bobbin B lower part is installed to the state of bobbin mounting portion 24 of this tail yarn cutting element 23.
According to input unit spinning conditions 42 inputs and storage in operational store 41, control device 16 is drive controlling servomotor 15 and main motor M synchronously.When driving servomotor 15, by one group of gear, ring rail 8, lappet angle section 9 grades and the jackshaft 7 that is rotated is caused rising or descending.In addition, the yarns Y of sending from front roller 1 is batched on the bobbin B by twizzle 10a and steel traveler 11.
After continuous spinning, when arriving full bobbin and stop, shown in Figure 1A, formed bundle top and batched, step rail 8 reduces rapidly so that be formed on inclination on the cop (full bobbin) 38 (tube coiling) 38a that reels then, and this cop 38 is connected on the spindle 4.Afterwards, the position under the contact position that the yarns Y that is connected to by steel traveler 11 on the cop 38 contacts with each other through tail yarn cutting element 23 and spindle base portion 22b that is to say, stops this ring rail 8 in the location status under grip portions.Then, obtain the reel state of an about volume yarn of in position that tail yarn cutting element 23 and spindle base portion 22b the contact with each other position below slightly thereby brake to stop spindle 4, thus the state shown in acquisition Figure 1A.
Then, shown in Figure 1B, lappet 10 is arranged on punctured position, and lappet 10 does not disturb and doffs in this punctured position, and cop 38 is pulled up by doffing device 34 then.Tail yarn cutting element 23 is raised on the way by pulling up with cop 38, and the yarns Y that is connected to steel traveler 11 from cop 38 is directed into the position between tail yarn cutting element 23 and spindle base portion 22b.When tail yarn cutting element 23 rose with cop 38, the yarns Y of reeling around spindle base portion 22b was moved along the outer surface of spindle blade 22a.When tail yarn cutting element 23 arrives predetermined altitude, stop doffing device 34.In this state, tail yarn cutting element 23 keeps in a kind of following state: this tail yarn cutting element 23 cooperates to be installed on the bobbin B, along with tail yarn cutting element 23 rises, gap expansion between the outer surface of the interior perimeter surface of tail yarn cutting element 23 and spindle blade 22a, a plurality of ledge 28a have been discharged, 28b and groove 29a, the joint of 29b, thereby tail yarn cutting element 23 spindle 4 rotations relatively.
Then, main motor M is actuated to rotary spindle 4.This main motor M is driven predetermined period of time.As described in the prior art, the yarns Y that is cut off and remains on during predetermined doffing between spindle base portion 22b and the tail yarn cutting element 23 rises with cop 38 when tail yarn cutting element 23 is connected on the cop to be doffed 38, and separates so that remove automatically with spindle base portion 22b.Yet, in some cases, between tail yarn cutting element 23 and spindle base portion 22b, grip and be connected to yarn on the bobbin B (connecting yarn, not shown) before reaching full bobbin, for some reason or other and torn.When the connection yarn was torn, if cop 38 rises, then the yarn that keeps on spindle base portion 22b did not separate with spindle base portion 22b, that is to say, described yarn keeps not being removed.In this embodiment, spindle base portion 22b is with spindle 4 rotations, and tail yarn cutting element 23 separates with spindle base portion 22b, and promptly the grip portions of spindle base portion 22b and tail yarn cutting element 23 is opened.Then, because the centrifugal force of this moment, the residual yarn on spindle base portion 22b separates with spindle base portion 22b.
After stopping spindle 4, restart the doffing operation that is undertaken by doffing device.Shown in Fig. 1 C, although tail yarn cutting element 23 further rises with cop 38, the power of forcing of disc spring 26 exceeds the confining force that the cooperation between tail yarn cutting element 23 and bobbin B is installed, thereby tail yarn cutting element 23 separates with cop 38.Shown in Fig. 2 A, cutting element 23 drops to against the position of this spindle base portion 22b then, and the yarns Y that is connected on the steel traveler 11 from cop 38 is held between tail yarn cutting element 23 and the spindle base portion 22b.Afterwards, cop 38 further rises by doffing device 34, obtains such state: yarns Y with near 90 big angles of spending against this cutting part 25, reliably cut thereby yarns Y is cut part 25.In addition, the operation of doffing device 34 will continue, and cop 38 is doffed, and therefore obtain the state shown in Fig. 2 B.Therefore, empty bobbin is installed on the spindle 4.
The end that is connected to the yarns Y on the steel traveler 11 is held between tail yarn cutting element 23 and the spindle base portion 22b, in other words, and between ledge 28a and 28b and groove 29a and 29b, up to doff next time.Do not torn before time at doffing operation next time if connect yarn then, then the tail yarn that grips between tail yarn cutting element 23 and spindle base portion 22b is connected to when doffing on the cop 38 and with spindle 4 next time and separates.
Advantage below embodiment provides:
(1) during stopping to doff, stop ring rail 8, yarns Y is wound on the position of the grip portions that is not higher than tail yarn cutting element 23, in this state, has started doffing device 34 and has carried out doffing operation.During doffing operation, tail yarn cutting element 23 is elevated to predetermined altitude with bobbin B, rotary spindle 4, and grip portions is opened.Yet the yarn that has remained on the grip portions (promptly being adhered to spindle base portion 22b) unloads from grip portions by centrifugal force.Therefore, during spinning, torn for some reason, then can be carried out the accumulation that any operation just can prevent the residual yarn on spindle base portion 22b by operator or residual yarn removal device if connect yarn.
(2) spindle 4 time span of rotating with the base portion of opening of spindle base portion 22b and tail yarn cutting element 23 is not more than 5 seconds, if make that drafting system (drawing-off part) carries out work simultaneously, then can not relate to any problem.Therefore, needn't take a kind of like this structure: spindle drive system is unified, and drawing-off part drive system is separated from each other so that drafting system is not worked during spindle 4 rotations, thus the structure and the control that have slowed down spinning machine.
(3) yarns Y is held in following state: yarns Y be set at tail yarn cutting element 23 the bottom and with the upper part of above-mentioned bottom opposed spindle base portion 22b on a plurality of ledge 28a and 28b and groove 29a and 29b bendings of radially extending.Therefore, though when the power of tail yarn cutting element 23 being pressed to spindle base portion 22b little when not interfering the operation of doffing device 34, also can grip this yarns Y reliably.
(4) lower surface of the lower surface of the groove 29a of the end portion of formation tail yarn cutting element 23 and ledge 28a is configured as the part on the inclined-plane that can constitute an imaginary cone, the pivot of this imaginary cone is a spindle 4, and its summit is positioned on the plane of outer rim perpendicular to spindle 4 of containing above-mentioned end portion.When the power of extracting yarns Y from grip portions was applied to around spindle 4 coilings, one volume or is less than on the yarn of rolling up, radially outer power was applied on the yarns Y.When the lower surface of the lower surface of the ledge 28a that under this situation, constitutes grip portions and groove 29a downward-sloping, the resistance that offers yarns Y in the edge of ledge 28a and groove 29a is greater than the resistance that carries out offering in the edge of ledge 28a and groove 29a in the situation yarns Y at the yarns Y grip portions in a horizontal plane, and yarn is extracted easily.Therefore, the necessary pressure of the tail yarn cutting element 23 of gripping yarns Y can be littler than the horizontal situation of gripping surface.
(5) because tail yarn cutting element 23 is by disc spring 26 constant forcing towards spindle base portion 22b, thus can grip the yarns Y that is connected on the steel traveler 11 reliably, even tail yarn cutting element 23 weight are lighter.In addition, when throw off with bobbin B bobbin mounting portion 24, because forced tail yarn cutting element 23 downwards by disc spring 26, if yarns Y is cut when tail yarn cutting element 23 falls, this tail yarn cutting element 23 arrives contact spindle base portion 22b fast and can grip the position of yarns Y.
(second embodiment)
Below, with reference to Fig. 7 A and 7B the second embodiment of the present invention is described.This embodiment is identical with the first above-mentioned embodiment, have the spindle 4 of the grip portions of opening by rise tail yarn cutting element 23 with bobbin B to predetermined altitude and rotation, grip between spindle base portion 22b and the tail yarn cutting element 23 doffing during the yarn ends that is cut be removed.Yet this embodiment and first embodiment are very different aspect the time of removal.In this embodiment, after finishing doffing operation, bobbin B reinstalls on the spindle 4, carries out above-mentioned removal operation by restarted spinning machine by a plurality of cop conical surface hypotenuses that newly are wound up into the yarns Y on the bobbin B.The mechanical structure of this spinning machine and doffing device 34 is identical with the structure of first embodiment, but this embodiment is different in the method for control doffing device 34 and the running of control spinning machine with first embodiment.Element same as the previously described embodiments represents with identical Reference numeral, will be omitted their detailed description, and following explanation concentrates on not the same.
Different with first embodiment, in this embodiment, the doffing operation of doffing device 34 is not temporarily being interrupted by the way of doffing, and is directed the prior art but resemble.Then, after doffing device 34 is finished doffing operation, restart spinning machine, on the empty bobbin B that before temporarily stopping the spinning machine operation, a plurality of cop conical surfaces of yarns Y is reeled.Control the position that makes the lower end of rings 8a stop at the upper end that is higher than spindle base portion 22b this moment shown in Fig. 7 A.
Afterwards, operation doffing device 34, shown in Fig. 7 B, bobbin B is gripped by bobbin grip device 35a and is elevated to predetermined altitude with tail yarn cutting element 23.In this state, tail yarn cutting element 23 keeps cooperating installation with bobbin B and can rotating by relative spindle 4.Then, main motor M is driven in rotation spindle 4 predetermined period of times.This predetermined period of time necessary time that to be the yarn that will keep on spindle base portion 22b by centrifugal force separate with spindle base portion 22b, and obtain by test in advance and set.Predetermined period of time is 5 seconds or still less, general 1-2 second.Afterwards, operation doffing device 34, tail yarn cutter sweep 23 and bobbin B get back to and batch the position, discharge the gripping to bobbin B by bobbin grip device 35a here.Obtaining after doffing device 34 do not constitute state to any obstruction of spinning machine operation the operation of restarting spinning machine then.
Is such time at spindle 4 with the time that the grip portions of opening of spindle base portion 22b and tail yarn cutting element 23 rotates: after doffing, restart and batch slightly after batching by restarting spinning machine, it is very low to connect the possibility that yarns Y a (shown in Fig. 7 A) torn before when restarting spinning machine.Therefore, when tail yarn cutting element 23 rises with bobbin B, during the doffing formerly of a part of yarn end that between tail yarn cutting element 23 and spindle base portion 22b, grips and spindle 4 side grip portions throw off, this moment, this yarn was connected on the bobbin B.Because spindle 4 rotates in this state, go up the yarn end that exists at the grip portions (ledge and groove 28b and 29b) of spindle base portion 22b and separate by rotary spindle 4 and grip portions.Then, by restarting the starting stage of spinning machine rotation bobbin B, scattered in the yarn end that is connected on the bobbin B.Moreover when the connection yarn was torn, the yarns Y that has been bonded to the spindle sides grip portions discharged from this grip portions by centrifugal force.
This embodiment also provides following effect except having provided the effect identical with the effect of (2)-(5) of first embodiment:
(6) because tail yarn cutting element 23 is elevated to predetermined altitude, it is very low that connect the possibility that yarn torn this moment, so throw off from spindle 4 side grip portions on being connected to bobbin B the time a part of yarn end.Therefore, compare with first embodiment, can discharge yarns Y more reliably, and keep yarn by rotary spindle 4 during doffing on spindle 4 side grip portions in first embodiment, the grip portions of tail yarn cutting element 23 is opened.
(7) when carrying out yarn removal operation, ring rail 8 stops in such position: the lower end of rings 8a is higher than the upper end of spindle base portion 22b.Therefore, when the yarns Y on being connected to bobbin B was discharged by the rotation of centrifugal force by spindle 4, rings 8a did not interfere.In addition, can restart spinning machine, and not change the position of ring rail 8.
Embodiments of the invention are not limited to above-mentioned situation.For example can also be the following examples:
The time cycle that spindle 4 rotates together along with the grip portions of opening of tail yarn cutting element 23 and spindle base portion 22b was not limited to 5 seconds or still less; Can be longer than 5 seconds.Yet in this spindle drive system is unified the structure of drawing-off part drive system driving synchronized with each other, cause increasing from involving the length of yarn that part supplies with in the increase of the rotational time of spindle 4, this does not expect yet.
Rotated the time qualified of predetermined period of time at spindle during the doffing operation 4 in the time after tail yarn cutting element 23 reaches predetermined altitude and temporarily stops doffing device 34.For example, can also tail yarn cutting element 23 separate with spindle base portion 22b and cooperate bobbin B is installed in case can be relative spindle 4 rotations promptly pass this spindle 4 of rotation in the state of halfway of its rising.Yet,, more be desirably in doffing device 34 and temporarily stopped rotary spindle 4 afterwards from the viewpoint of control timing.
In a second embodiment, after restarting spinning machine, the bottom that the position that is used to remove operation that stops ring rail 8 during stopping spinning machine being not limited to rings 8a is higher than the position of the upper end of spindle base portion 22b.For example, can also be the position of the upper end of spindle base portion 22b corresponding to the inner surface of rings 8a, perhaps the upper end of rings 8a is lower than the position, bottom of spindle base portion 22b.
Be sure oing that this tail yarn cutting element 23 has been elevated to aspect the predetermined altitude during by doffing device 34 cop 38 being doffed, can also replace be sure oing that the position from the bar 35 that doffs be sure of it, be sure oing by some other method.For example, can be by being held from cop 38 and time of the beginning of doffing is measured time of continuity, perhaps the sensor that is provided for detecting the position of bobbin B for each spindle 4 or the representational spindle 4 selected comes it is be sure of in time.
When forming the spindle base portion 22b of metal, spindle base portion 22b can form with spindle blade part 22, rather than is formed separately from each other.
The grip portions of this tail yarn cutting element 23 and spindle base portion 22b is not limited to the combination of ledge 28a and 28b and groove 29a and 29b.Two grip portions can comprise flat surface.When two grip portions comprise flatly when surperficial, each grip portions can be formed by the circular cone inclined-plane, and the central axis on this circular cone inclined-plane is positioned at the center of spindle 4, and the summit on this circular cone inclined-plane is on upper side.
Cutting part 25 is not limited to the structure of cut edge element 25a for the element of separation; For example, as shown in Figure 8, tail yarn cutting element 23 can be that dish type cut edge part 24b is in the integrally formed structure in the bottom of bobbin mounting portion 24.
The external diameter of this cutting part 25 is less than the external diameter of the base section of bobbin B.In this situation, needn't worry that the yarns Y that is connected to steel traveler 11 from cop 38 was cut during doffing before being held between tail yarn cutting element 23 and the spindle base portion 22b.
Tail yarn cutting element 23 need not be confined to the structure that yarns Y is cut edge member 25a cutting; Can also adopt a kind of be provided with cop 38 by when spindle 4 pulls up against the structure of the marginal portion of yarns Y, therefore help the yarns Y that will be torn.
Be used to make the tail yarn cutting element 23 on the halfway that doffs to be not limited to use spring (for example disc spring 26) to force the structure of power with the structure that the bobbin B that is installed to bobbin mounting portion 24 throws off.For example, as shown in Figure 9, be fixed on the precalculated position on the spindle blade 22a such as the retainer of fast T-Ring 27a or pin.In this structure, when rising with bobbin B, tail yarn cutting element 23 engages with retainer, thereby controls its rising, and tail yarn cutting element 23 is thrown off with bobbin B.In this situation, the aspect ratio that tail yarn cutting element 23 and bobbin B throw off uses spring to force the height of situation of power more accurate.
In tail yarn cutting element 23 and spindle base portion 22b state of contact, can use magnet as forcing tail yarn cutting element 23 to force device to replace spring towards spindle base portion 22b side.For example magnet is embedded in the upper surface of this spindle base portion 22b, and magnet material (for example iron) is fixed on the bottom lower surface of tail yarn cutting element 23.Can also provide magnet for spindle base portion 22b and tail yarn cutting element 23, perhaps magnet is arranged on tail yarn cutting element 23 sides and and be arranged on the spindle base portion 22b side magnet material.Can also remove the above-mentioned device that forces.
The lower surface of the end surface of this ledge 28a and 28b and groove 29a and 29b is not must be outwards downward-sloping; They can also be levels.Yet, bigger in downward-sloping structure to the resistance of extracting of yarn when applying the power of extracting the yarns Y that is held, make that yarn is difficult to be pulled out.
Can also be provided for the sliding bearing of known resistance during the relative rotation of yarn gripping elements and spindle 4 at least a yarn gripping elements (tail yarn cutting element 23) and spindle 4.As sliding bearing, by the lining that the immersion oil sintering metal forms, metal bearing etc. can be used.For example, replace the axle collar 27, sliding bearing is installed on the spindle blade 22a.In addition, as shown in Figure 9, sliding bearing 43 can also be arranged on the inboard of tail yarn cutting element 23.When the yarn gripping elements of spindle in being maintained at the predetermined position that raises rotated, the rotational resistance of acquisition was compared littler with the situation that does not have sliding bearing, therefore the improved durability that obtains.
About being used for the drive system of spindle 4, can adopt a kind of structure of spindle 4 that drives with tangential belt to replace structure with the spindle belt drives spindle 4 of reeling around rolling disk.In addition, can also adopt so-called single spindle drive system system, wherein provide motor for each spindle.
The present invention not merely is used for ring throstle, can also be used to encircle the ingot twisting mill.
Claims (4)
1. method of removing the residual yarn in the spinning machine, the spindle of this spinning machine (4) is provided with yarn gripping elements (23), this gripping elements (23) have by doffing device (34) pull up cop (38) thus operation cutting be connected to the function of yarn on the cop (Y) from steel traveler (11), this yarn gripping elements (23) is provided with at the grip portions (28b by spindle (4) side, 29b) cooperate cutting down to grip the grip portions (28a that is connected to the yarn on the steel traveler (11) afterwards, 29a), with the bobbin mounting portion (24) that bobbin (B) is installed, be elevated to state that position one predetermined altitude of spindle cooperate to be installed apart from yarn gripping elements (23) at yarn gripping elements (23) and rotate this yarn gripping elements spindle relatively down, it is characterized in that
This method also comprises: this cop is gripped by doffing device (38), yarn gripping elements (23) rises to predetermined altitude with bobbin (B), highly locate spindle (4) rotation relatively of this yarn gripping elements (23) at this, and make spindle (4) and two grip portions (28a that open, 29a and 28b, 29b) rotation together.
2. method of removing the residual yarn in the spinning machine, the spindle of this spinning machine (4) is provided with yarn gripping elements (23), this yarn gripping elements (23) has the operation that pulls up cop (38) by doffing device (34) is connected to the yarn (Y) on the cop (38) from steel traveler (11) with cutting function, yarn gripping elements (23) is provided with at the grip portions (28b by spindle (4) side, 29b) grip the grip portions (28a that is connected to the yarn (Y) on the steel traveler (11) after the cutting of Pei Heing, 29a), with the bobbin mounting portion (24) that bobbin (B) is installed, this yarn gripping elements spindle relatively is elevated to relative spindle (4) rotation under the state of a predetermined height that cooperates the position that spindle (4) is installed apart from yarn gripping elements (23) at yarn gripping elements (23)
It is characterized in that this method comprises:
After doffing, empty bobbin (B) is installed on the spindle (4) by doffing device (34);
Spinning machine begins to reel the yarn (Y) of predetermined quantity to empty bobbin (B);
Stop spinning machine;
Grip this bobbin (B) by doffing device (34), yarn gripping elements (23) rises to this predetermined altitude with bobbin (B), highly locates bobbin (B) spindle (4) rotation relatively at this, with two grip portions (28a that open, 29a and 28b, 29b) rotary spindle (4) together;
This yarn gripping elements (23) and bobbin (B) are got back to and are batched the position so that discharged the bobbin (B) that is gripped by doffing device (34) before restarting spinning machine; With
Restart this spinning machine.
3. according to claim 1 or the 2 described methods that are used for removing the residual yarn of spinning machine, it is characterized in that,
(29b) time span of rotation is 5 seconds or still less together for 28a, 29a and 28b for this spindle (4) and two opening grip portions.
4. according to claim 1 or the 2 described methods that are used for removing the residual yarn of spinning machine, it is characterized in that at least one is provided with sliding bearing (43) so that the resistance that is suppressed at yarn gripping elements (23) and produces during the relative rotation of spindle (4) in yarn gripping elements (23) and the spindle (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP158107/04 | 2004-05-27 | ||
| JP2004158107A JP2005336662A (en) | 2004-05-27 | 2004-05-27 | Method for removing residual thread in loom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1702210A true CN1702210A (en) | 2005-11-30 |
| CN100415968C CN100415968C (en) | 2008-09-03 |
Family
ID=35490535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100687471A Expired - Fee Related CN100415968C (en) | 2004-05-27 | 2005-04-30 | Method for removing residual yarn from spinning machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005336662A (en) |
| CN (1) | CN100415968C (en) |
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 |
| CN101070652B (en) * | 2006-05-12 | 2010-06-16 | 株式会社丰田自动织机 | Tail yarn holding device of spinning machine |
| CN108468120A (en) * | 2017-02-23 | 2018-08-31 | 里特机械公司 | The method doffed for spinning machine and corresponding doffer |
| CN108796689A (en) * | 2018-07-02 | 2018-11-13 | 浙江日发纺织机械股份有限公司 | A kind of frame connector trolley signal visiting method |
| CN111850756A (en) * | 2020-07-09 | 2020-10-30 | 安庆师范大学 | Automatic yarn cleaning method and automatic yarn cleaning device for spinning frame |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112014006709B4 (en) * | 2014-06-30 | 2022-11-17 | Komatsu Ltd. | stroke detection device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1710057C3 (en) * | 1967-12-01 | 1978-09-21 | Zinser Textilmaschinen Gmbh | Method and tear-off device for tearing off yarns or threads |
| ITMI980853A1 (en) * | 1997-05-06 | 1999-10-22 | Rieter Ag Maschf | SPINNING DEVICE |
| EP0949366B1 (en) * | 1998-04-09 | 2003-05-07 | Zinser Textilmaschinen GmbH | Apparatus for clamping an underwound yarn wrap on the spindle of a ring spinning or ring twisting machine |
| 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 |
-
2004
- 2004-05-27 JP JP2004158107A patent/JP2005336662A/en not_active Withdrawn
-
2005
- 2005-04-30 CN CNB2005100687471A patent/CN100415968C/en not_active Expired - Fee Related
Cited By (7)
| 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 |
| CN101070652B (en) * | 2006-05-12 | 2010-06-16 | 株式会社丰田自动织机 | Tail yarn holding device of spinning machine |
| CN108468120A (en) * | 2017-02-23 | 2018-08-31 | 里特机械公司 | The method doffed for spinning machine and corresponding doffer |
| CN108468120B (en) * | 2017-02-23 | 2023-06-06 | 里特机械公司 | Method for doffing of spinning machine and corresponding doffer |
| CN108796689A (en) * | 2018-07-02 | 2018-11-13 | 浙江日发纺织机械股份有限公司 | A kind of frame connector trolley signal visiting method |
| CN108796689B (en) * | 2018-07-02 | 2021-02-26 | 浙江日发纺织机械股份有限公司 | Signal patrol method for joint trolley of spinning machine |
| CN111850756A (en) * | 2020-07-09 | 2020-10-30 | 安庆师范大学 | Automatic yarn cleaning method and automatic yarn cleaning device for spinning frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100415968C (en) | 2008-09-03 |
| JP2005336662A (en) | 2005-12-08 |
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