CN85105438A - Be wound into the method and apparatus of cross-wound bobbin for yarn with constant speed - Google Patents

Abstract

When with constant speed for yarn [10] when being wound into a cross-wound bobbin [11], the tension fluctuation of yarn be compensated and can be by way of parenthesis variation by winding speed prevent to surmount given yarn tension limit.The yarn tension fluctuation that occurs for compensating for periodic is provided with a first order control apparatus [96].And be provided with second stage control apparatus [51] for the scope that departs from regulation that compensates yarn tension.

Description

Be wound into the method and apparatus of cross-wound bobbin for yarn with constant speed

The present invention relates to a kind of device that is wound into the method for cross-wound bobbin and realizes this method for yarn with constant speed.

The coiling of this cross-wound bobbin (cone) by friction roller garden Zhou Chuandong, therefore, will guarantee that in transmission range linear velocity constant is constant.Supply yarn consistently, as in rotor spinner and some up-coiler, coming to this.Only need make cotton yarn impartial apart from maintenance at the Width of bobbin, generally adopt this simpler method, for example adopt the guide rail of a bending to realize in different traverses.When coming transmission by the segment section on the bobbin length, that can have nothing in common with each other in work area and district's exterior portion diameter, has therefore caused the difference of linear velocity.Become particularly outstanding for the tapered bobbin problem, also there is unequal this factor of the distance of yarn traverse on the bobbin Width in tapered bobbin, this is because the bobbin tapering causes very big vary in diameter, so whenever around a commentaries on classics, the coiling length of yarn all tangible fluctuation can occur.The bobbin of coiled can be uneven like this, also can cause layer to come off, and the further processing of back is met difficulty, up to broken yarn takes place.

In order to compensate the difference in length of yarn, such suggestion had been arranged, i.e. bobbin speed change transmission (DE-OS2,458,853).In order to achieve this end, on the device that people are familiar with, transmission position is put the outside face that is parallel to tapered bobbin and is moved.Illustrate that with example the Transmission self that will occur tapered bobbin like this is along tapered bobbin vertically move around (Fig. 3 and 4).At this moment cotton yarn is worn and torn terribly along the Transmission of tapered bobbin longitudinal movement, and load also increases, and the bobbin of winding shaping is big more, then Transmission since bobbin weight be increased in its reel in institute's pressurized severe more.Such device is not allow self to be under the very big pressure, the situation that particularly can cause yarn to damage thus.Because this mobile Transmission width is very little, and is very unfavorable for the transmission of transmission, so that can not accurately regulate the speed of being desireed by sliding.The transmission position displacement of tapered bobbin vis-a-vis has a kind of form (Fig. 1 and 2) in addition, and promptly tapered bobbin by several anvil roll holders, and each roller can both be born main gear selectively among them.This just needs an axially movable live roll, and its stroke range can be from first carrying roller of bobbin one end to last carrying roller of the bobbin other end.Because the live roll stroke is very big, it also is subjected to considerable wear.In addition with the carrying roller of cross-wound bobbin respective numbers, the variation of its transmission speed can only have level.If carrying roller is few, then classification transmission stepping is very big.If carrying roller is more, the part that then is used for transmitting main gear is just very little, equally also can cause bad result to transmission.In both cases, the tension force of yarn is not carried out consideration at all, so can not wind the taper cross-wound bobbin equably.

In another well-known device (DE-PS1,912,374), its friction roller is made up of two or more rollers, and they can be connected as driving type with their imput shaft of supporting selectively by the power-transfer clutch that can handle.Power-transfer clutch is handled by a swing arm, make the taper cross-wound bobbin come winder in the mode in reciprocal loop, and according to the loop size, friction roller drives it with different linear velocities.The coupling that changes by such yarn tension that device obtains is very coarse, because structural reason, the number of power-transfer clutch is limited between main driving axle and the friction roller.

Friction roller be contained in one can wave and along transmission shafts on transportable friction roller frame, the friction wheel of conical friction wheel drive mechanism is contained in (DE-PS2 on imput shaft and the friction roller respectively, 328,993), control winder speed with them, this also is that people are known, in such a way, when winder speed changes, friction roller can produce the axial motion with respect to bobbin, and this can cause the infringement to cotton yarn.The major defect of this well-known device is, moves in order to make the bobbin support, must leave sizable position on the next door of each bobbin.

Task of the present invention is for avoiding above-mentioned shortcoming and corresponding method and apparatus is provided, come winding line equably, and particularly the taper cross-wound bobbin is reeled and mechanism's simple structure compactness them with uniform yarn tension on each station.

This task is resolved like this, promptly by the compensation wire tension fluctuation, adds the variation that prevents winding speed in addition and surpasses given yarn tension limit.Wind the line from the beginning at the bobbin mandrel on the new clothes and will compensate the tension fluctuation that occurs when yarn is being reeled by the deflection of yarn.If one to be wound into one deck around big more bobbin more loose, the skew of then consequent yarn tension fluctuation range can be remedied by the variation of winding speed.

In order to get rid of the feedback of winding speed and yarn tension compensation, thereby get rid of the error in the control reliably, and adopted the arrangement of this invention, and cross-wound bobbin is driven by the determined maximum line velocity of the tension force of being desireed, and prevents that when needs the amplitude offset of yarn tension fluctuation from then will underspeed.In this case, just can guarantee that tapered bobbin tensile stress in its forming process is uniformly, interference-free.

For the process of carrying out introducing has above been used the secondary control setup by the present invention, first order control setup is in order to the yarn tension fluctuation of compensating for periodic, and second stage control setup is in order to the amplitude offset of compensation yarn tension.Can regulate reliably by simple method thus, make yarn in winding process, keep invariable tensile stress.

According to structure setting of the present invention, constitute first order control setup by a yarn tension sensor, this sensor can make second stage control setup play a role when giving fixed yarn tension scope departing from.So first order control setup still is a monitor unit, monitoring whether yarn tension is gone to beyond the scope of giving elder generation's regulation.So just saved the monitor unit that is used for handling second stage control setup and needs to be provided with in addition.

According to the present invention, it is very favorable being used as this version of second stage control setup with the adjustable speed-changing driving device, the driving part of variable-speed drive links to each other with a plurality of 2 imput shaft, its secondary part links to each other with friction roller, driving part comes the driven transmission parts by transfer element, with certain transmission speed ratio, defeated element is connected with first order control setup.A end and secondary part axially all can not move, exist certain transmission speed ratio between A end and the secondary part, there is not such element that moves along cross-wound bobbin or friction roller, so the sort of interference that the wearing and tearing owing to the element that moves along friction roller cause can not occur.Because friction roller not only links to each other with power-transfer clutch, but also be used for controlled adjustable speed-changing device, so the rotative speed of main gear is not directly to pass to friction roller simply.Or rather, friction roller generally is to drive like this, and promptly the speed of its rotative speed and institute's transmission is different, so by means of controlled adjustable speed-changing device the winding speed of friction roller can be changed in very wide scope.The adjusting of the transfer element by detecting yarn tension and first order control apparatus, make the taper cross-wound bobbin can around not only evenly but also good.The interface width of friction roller and bobbin needn't determine by desirable winding speed, but can freely select, and this is the subsidiary preceence that obtains.

As " friction roller ", this part should be understood that in meaning of the present invention, by it garden week drive tapered bobbin, and whether let it be length the same with the whole length of bobbin or its a part just.

According to the version that the present invention adopts, variable-speed drive is adjustable under the situation that is no more than maximum transmission gear shift ratio, and finishing winding speed in a simple manner by means of it is not all right to the feedback that yarn tension compensates.

The favourable aspect of transfer element is can step-less adjustment, can accurately be complementary with various adjusting speed ratios, is wound into tapered bobbin by desirable situation from start to finish, makes back step processing be in concours condition.

The adjustable speed-changing device form is different in principle, and can have multi-form transfer element, and for example eddy current clutch is with eddy current or magnetic-powder clutch magnetic, their rotative speed of input by required size output.These instantaneous power-transfer clutchs are to the reaction difference of each action.In order to solve above-mentioned situation, adopt so a kind of transfer element of form, survey the rotative speed of friction roller and regulate power-transfer clutch according to the desirable condition and the rotating speed of the friction roller of reality.

Lack for fear of using expensive electronic component and realization that friction roller economy is reasonably controlled to take up an area of simultaneously,, defeated element can be regulated vertically between two cone pulleys so A end and secondary part all adopt the garden cone pulley.For such variable transmission mechanism, do transfer element with regulating ring and have unique advantages.Friction roller can remain the unmodified radial position like this, and is irrelevant with the adjustment of transfer element, and the bobbin diameter can be monitored with fixing grating simply like this.The version that the present invention proposes, variable-speed drive can mate rapidly with the variation of condition especially.

In order to determine that the desirable maximum transmission ratio of driving device also obtains the linear velocity of cross-wound bobbin maximum thus in simple mode, the present invention has such mechanism, be that transfer element has an adjustable initial position and a reset attachment, use so that transfer element turns back to the initial position of maximum transmission ratio.If transfer element is the part of garden cone pulley transmission device, determine that with the subsidiary stop tab of transfer element the initial position is very favourable so.The benefit of doing like this is that adjustable stop tab is attached to the transfer element shift fork that is driven by reset attachment.And confirmed adjustable stop tab is placed on the shift fork and meeted the requirements.

Can use a retracing spring as reset attachment in the present invention very simply, especially garden cone pulley conical surfaces also is used for as reset attachment.The conical surfaces of driving wheel and flower wheel is given power of transfer element, makes transfer element turn back to initial position.In order to realize this purpose, driven cone pulley is contained on the wheel shaft, this wheel shaft and main driving axle relative tilt, and initiatively the garden cone pulley just is contained on this root main driving axle.The degree of dip of wheel shaft is adjustable simultaneously.Its advantage also has adjustable wheel axle to be contained on the lever in addition, and lever has adjustable eccentric mechanism.

Two bevel wheeies are selected different taperings for use, if at this moment transfer element have with the tapering of cone pulley be complementary but different taperings, this is to have very much a preceence.Reset attachment also has a subsidiary benefit to be, transferring power is come in the transfer element different position that moves around between two cone pulleys, has so just avoided excessive wearing and tearing on the contour of a certain garden of garden cone pulley.

Variable-speed drive of the present invention is simple in structure, has the transmitting ratio of single-stage, and friction roller becomes and imput shaft off-centre by the design bearing of admitting imput shaft, and secondary part is the inner conical face.Since friction roller remain the unmodified radial position and with the location independent of transfer element, so the bobbin diameter can monitor with a grating very simply that this mechanism can meet this requirement.It is exactly the outside that main driving axle is contained in friction roller that this device also has an advantage.

The invention has the advantages that drive roll is to be installed in friction roller inside with one heart, this variable-speed drive by another driving device and friction roller with or imput shaft link to each other.Rotation conducts to adapter shaft from main driving axle, transfer element, or on the suchlike parts again by their rotate to the concentric friction roller of main driving axle on.This other connection transmission is installed in conforms with the purpose requirement between passive element and the friction roller.

Speed change can realize by diverse ways, for example by gear or friction wheel or chain.The method of simple possible is as other transmission rope sheave.

Between the second stage control setup that first order control setup of being made up of yarn tension sensor and variable transmission mechanism are formed, aspect control, be connected with various general-duties or familiar mode, for example electric device.Verified, solving with mechanical method is most economical actv..Connect yarn tension sensor and variable-speed drive by selected mechanical means, the yarn tension sensor demonstrates the stress that feeler lever produces when bobbin winding device supplies yarn, and this feeler lever links to each other with the transfer element of variable-speed drive by means of a guide rod.

For make the yarn tension sensor can be when the automatic place in operation can be by means of can be along the fender guard of a plurality of station manipulations; lift from the yarn of this row; as on rotor spinner must do; the yarn tension sensor has a flange that extends in parallel with friction roller in device of the present invention; it can block the fender guard of certain station of appointment in a plurality of stations with an adjust bar.

Moving especially accurately in order to obtain first order control setup, is favourable so make the yarn tension sensor with plastics.

Be directed at the variation of speed ratio for fear of minimum and instantaneous peak stress, can not work in given yarn tension fluctuation range to this first order control setup to second stage control setup, it is very favourable arranging a slotted hole between feeler lever and guide rod, and the size of slotted hole can be regulated.Make that thus the sensitivity of this contrive equipment or the scope of yarn tension all are adjustable.

In this favourable constructional device, the yarn tension sensor is the guide piece of guide rod, guide rod is the part of drive link, drive link has adjustable, shift to the stop tab of device from the yarn tension sensor limit, by this device transfer element is shifted out by the initial position, can adorns a relatively-movable transmission resilient coupling for fear of damage between drive link and transfer element, occurring.

Occur in order to give anti-such danger, promptly the tail yarn that tapered bobbin major diameter one end forms at the beginning when the coiling tapered bobbin falls into variable-speed drive, preferably minor diameter one end is contained in the variable-speed drive.

Because the tapered bobbin of rotation is because its tapering exists the difference of linear velocity in the different length scope, so friction roller should have two dance rollers at least, and a drive roll that is contained between these two degrees of tightness accent rollers drives bobbin.When bobbin during by the drive roll independent drive, dance roller only plays the effect of rest bobbin.Drive roll is not on the midway location of bobbin, but the large diameter one side of bobbin ， And and be positioned at two dance rollers relatively, at this moment the dance roller that number does not wait also can be adorned in the bobbin both sides.

The present invention is on structure design, and size can be narrow especially, so " spacing " of multistation wind2 is especially little, and drive roll can drive by outer garden.

If the drive roll impassabitity garden week of multi-stage friction roller drives bobbin, then adopt the attaching parts of a sleeve cast, make it and be contained in friction roller one end, and the drive disk assembly that is outwards transmitted power by variable-speed drive links to each other, and the dance roller that at this moment is contained between drive roll and the drive disk assembly just is placed on the attaching parts of this tubular.There is a tube-shaped flange this end that is seated in the main drive roller on the tube-shaped attaching parts, can put a dance roller at least.

Whether friction roller is by its whole outer garden or just drive bobbin by one section outer garden, and this is inessential, and in order to drive the cross-wound bobbin rotation better, the lasso that is enclosed within the friction roller surface should be selected the material that suits or texturing line on the lasso surface.

The present invention structurally is very simple, and Ke Kao And saves the space on function.Regulate yarn tension easily and the ratio of reeling.This device still can be controlled under the situation of high-speed winding exactly, therefore can go out good cylindricality and taper cross-wound bobbin by network.

The detailed explanation of various piece further specifies below in conjunction with the accompanying drawings.

Fig. 1 uses first example of design-calculated winder station of the present invention, the part front elevation, and the variable-speed drive of this device is made up of bevel wheel.

Fig. 2, the part figure of improvement part of the present invention.

Fig. 3, the further improved local figure of the present invention, at this, this device with instantaneous power-transfer clutch as transfer element, and friction roller with sectional construction.

Fig. 4, the constructional drawing of device transmission shaft outside friction roller.

Fig. 5, the present invention use the transparent view of mechanical type tenslator.

Fig. 6, the present invention use the reset attachment sketch that has control transfer element shift fork.

Fig. 7 can be in the yarn tension sensor lateral plan of diverse location.

Fig. 8, the constructional drawing of the transfer element reset attachment of another version.

Fig. 9, the lateral plan of the transfer element reset attachment of another version.

The wind2 (1) of at first wanting Jie Shao And to provide in Fig. 1 is the part in the rotor spinner, is used for coiling taper cross-wound bobbin (11).Certainly this invention can be used on the spinning machine of other type equally, and what draw among the figure is to cylindricality or taper cross-wound bobbin (11) from wind the line station or wind2 (1).

Shown in figure one, each wind2 (1) mainly is made up of following parts: bobbin support (2), unique axial immovable friction roller (3), one drives adjustable speed-changing driving device (5) and the axial immovable main driving axle (4) that friction roller (3) rotates.

Bobbin support (2) has two bobbin arms (20) and (21), as shown in FIG., in order to the bobbin (22) of laying tapered bobbin, with yarn (10) coiled taper cross-wound bobbin (being cone) (11), the driving of bobbin is realized by friction force by friction roller (3) on this bobbin.

Friction roller (3) is installed on the main driving axle (4) with two antifriction-bearing boxs (30) and (31), and friction roller can freely rotate.One end fixed engagement of gear (71) and friction roller (3).Gear is the part of the spur gear transmission mechanism (7) between variable-speed drive above-mentioned (5) and the friction roller (3).

Main driving axle (4) is a common axis, a plurality of wind2s adjacent one another are (1) are housed, the length of main driving axle (4) is consistent with the number of wind2, for each bobbin (11) can be driven independently, the transmission of friction roller (3) is not directly transmitted by main driving axle (4), but middle speed-changing mechanism by adjustable speed-changing driving device (5) carries out.

Variable-speed drive shown in Figure 1 (5) has an adjustable cone pulley transmission device (6) and a nonadjustable straight gear transmission device (7).The one active cone pulley (60) that installs with main driving axle (4) is arranged in the variable-speed drive (5), and its moves with driven cone pulley (62) through transfer element (61).Transfer element (61) is made the form of regulating ring as shown in the figure, and it can be parallel to the appearance profile line of cone pulley (60) and (62) regulates, and also will introduce as the back.Cone pulley (62) is contained on the wheel shaft (65) by means of antifriction-bearing box (63) and (64), and wheel shaft (65) is bearing on the bearing (66).What be solidly installed with cone pulley (62) is straight gear (70), it and straight gear (71) engagement that is contained on the friction roller (3).

Transfer element (61) is stirred by shift fork (80), and it belongs to corresponding driving device (8).For instance, driving device (8) is a stepping motors that can just change and reverse, and it is by the miniature gears tooth bar engagement continuous with being connected shift fork (80).Such stepper motor just should And on price and is not needed to come it is controlled with control apparatus, can reduce the expense that is used in the control aspect thus.With the exception of this, such driving device can also the classification of very fine ground, and the transmitting element of practical application (61) is exactly a step-less adjustment.Driving device (8) links to each other with setting device (9), and setting device links to each other with yarn tension sensor again, constitutes a control system.

As want as described in, constitute first order control setup (96) by yarn tension sensor (90), constitute second stage control setup (51) by variable-speed drive (5).

Rotor spinner situation shown in the figure, yarn (10) is continuously supplied with ， And by spinning apparatus (12) and by means of outlet roller (13) and (14) yarn is drawn from spinning apparatus.Yarn (10) passes a fixing thread-carrier (15) and tension compensating bar (16) then.Yarn (10) is gone up formation intersection cone (11) with the yarn network at bobbin (22) by means of the reciprocally swinging of fro guiding-yarn device (17) (dotting).

In general coiled garden cylindricality bobbin (not shown) also is possible, and these will be by means of yarn tension compensation bar (16), compensates for the yarn tension that winding method the caused fluctuation of reciprocal variation.Taper cross-wound bobbin (11) is because its tension fluctuation changes quite greatly.Its forming process can sustain damage.With a representative type tapered bobbin is example, and bobbin minor diameter and large diameter garden week ratio changed between 10: 16 to 10: 11 continuously.This just shows that with fixing compensating part, such as the yarn tension compensation bar is such, and the tension fluctuation that tapered bobbin (11) is occurred in winding process compensates well, is impossible.Sometimes both made is that coiling garden cylindricality bobbin (11) also is difficult.

In front on the device of Jie Shaoing, the yarn (10) that winding device (1) is supplied with is detected by yarn tension sensor (90), each variation of yarn tension is all passed to control setup (9) there, driving device (8) is controlled by the yarn tension variation by this control setup, the transfer element (61) in the cone pulley mechanism (6) is made parallel sliding with respect to cone pulley (60) and (62).Make also corresponding the changing of transmission speed ratio of variable-speed drive (5) thus.Pass to the speed of tapered bobbin (11) by the friction roller (3) of variable-speed drive (5) driving by imput shaft (4), also synchronous change along with the variation of tension force, therefore consider the variation of yarn operation, resulting yarn winding speed will remain and by outlet roller (13) and (14) yarn (10) be drawn from spinning apparatus (12) with this speed for the consistent ， And of yarn speed.The first order control setup (96) that is made of yarn tension sensor (90) makes yarn (10) to stablize unmodified tension force winder with the second stage control setup (51) that is made of variable-speed drive (5).

Fig. 5 is the bevel wheel (62) of cone pulley transmission device (6), the transparent view of transfer element (61) and shift fork (80).As clearly representing in this drawing, transfer element (61) is a regulating ring that the bus that can be parallel to cone pulley (60), (62) appearance profile axially moves, the size of regulating ring should come like this to determine promptly where all it should be in and can rotate around cone pulley (62) all the time.The internal diameter that has only regulating ring greater than by it around cone pulley (62) external diameter the time, could satisfy such requirement.Regulating ring (61) is in two pairs of pins (800) and (801) sandwich, but can only see pin on one side in Fig. 5.

Wear-resistant especially with regulating ring as transfer element (61), the long service life of comparing with the transfer element of rope and belt and so on.With the exception of this, regulating ring is swift in response to the adjusting motion that gives, and it is had can be along with the timely governing speed promptly of the variation of condition.

In the design example that provides previously, except adjustable speed-changing device (5), also has a nonadjustable transmission device of speed ratio (7).This mechanism as shown in Figure 1, main driving axle (4) places the inner advantageous particularly of friction roller (3), because just can make like this friction roller (3) and main driving axle (4) concentric device.In addition, by mode shown in Figure 1, adjustable speed-changing device (5) is disposed between main driving axle (4) and the nonadjustable straight gear transmission device (7), its reason is, the power wheel (as garden cone pulley 60) that is supported for fixing main driving axle (4) should leave certain vacant position on friction roller (3) next door, And and also will to be contained in the friction roller (3) of the inside to spur gear (71) other.Because the cone pulley of cone pulley transmission device (6) need be than the wideer adjustability of spur gear mechanism (7), so the adjustable cone pulley transmission device (6) of transmitting ratio is arranged in the centre of main driving axle (4) and another transmission device of the nonadjustable gear of transmitting ratio (7).

The version that the front was introduced has the two-stage speed ratio, also can replace with one-level speed governing or multistep speed regulation fully certainly.

The example of single line speed change is seen Fig. 2, and on each wind2 (1), main driving axle (4) is installed on the fixed type bearing (40) with antifriction-bearing box (41), and the aspect also is contained in an end of friction roller (3) on the bearing (40) with antifriction-bearing box (30) in addition.The other end of friction roller (3) is made inner conical surface shape (32), and the inner conical surface of this spill (32) just becomes the cone pulley transmission device (6) that is fixed together with friction roller (3), the running part of the variable-speed drive of formation (5).Inner conical surface (32) by transfer element (61) be contained in that main driving axle (4) is gone up and can not constitute transmission device by axially movable cone pulley (60).As what introduced among Fig. 1, regulating ring (61) controls to adjust transmission speed ratio by shift fork (80).

Variable-speed drive (5) is installed between main driving axle (4) and the friction roller (3), and friction roller (3) is installed on the eccentric position of main driving axle (4), could guarantee that like this regulating ring (61) plays regulating action.

When taper cross-wound bobbin (11) was driven owing to its tapering, although the cireular frequency of each point is identical on its each length direction, linear velocity was different.Yarn (10) on the bobbin (11) bears bigger friction along its length, and the linear velocity of bobbin (11) and friction roller (3) has difference on this direction, and this has a negative impact to yarn (10).So as a kind of corrective measure, as shown in Figure 2, friction roller (3) is done roll surface at the centre portion of its length areas with a lasso (33).Other length field of friction roller (3) is also just little to the friction coefficient of yarn (10), and these parts only play the effect of rest.Texturing line or both dual-purposes are gone up in material or surface that lasso surface (33) should be selected to suit, do like this for bobbin (11) and can play good booster action.There is not dependence in other length field that only plays the rest effect on lasso (33) and the friction roller (3) in the variation of speed, so in decision during its size, pass to bobbin (11) as long as can guarantee that lasso (33) will rotatablely move.

Friction roller (3) further progress has been done introduction by Fig. 3.Adopt antifriction-bearing box (30) and (31) that friction roller (3) is contained on the main driving axle (4).Friction roller (3) has a drive roll (34), and its sleeve shaped attaching parts (340) extends to rope sheave from drive roll (34), and (721 〕 And and it are solidly installed.By means of antifriction-bearing box (350) and (351) dance roller is contained on the axle sleeve shape attaching parts (340), the side that main drive roller (34) stops from rope sheave (721) continues ， And in the mode of sleeve-like lengthening (341) equally to the end of friction roller (3) and supports another dance roller with antifriction-bearing box (360) and (361).Lasso (33) is housed as roll surface on the drive roll (34).When yarn (10) when bobbin (11) go up to be reeled, dance roller (35) and (36) be can't help main driving axle (4) and are driven, but are driven by bobbin (11).Slide owing to existing between dance roller (35) under bobbin (11) and friction roller (3) part and (36) like this, friction force significantly reduces.

As shown in Figure 4, can be designed to plural dance roller (35) and (36), nor necessarily must be arranged in the middle of dummy roll to the drive roll of friction roller (3) (34).Because the big one section friction force of bobbin (11) diameter is bigger, if as shown in Figure 4, drive roll (34) is arranged in relies on the big one side of bobbin (11) diameter, and be not placed on the middle part of friction roller (3), more suitable like this.By shown in Figure 4, for making varying in size of drive roll (34) both sides dance roller, can three dance rollers (35,37,38) be housed on one side of bobbin (11) minor diameter, and only adorn a dance roller (36) on the large diameter one side of bobbin (11), compare with dance roller (35,37,38), roller (36) is wideer a little.

Variable-speed drive shown in Figure 3 (5) is different with frame mode shown in Figure 1.Because for taper cross-wound bobbin (11), sometimes may wish that the tail yarn stays bobbin (a 22) end (Fig. 1) all the time, it is bobbin (11) major diameter one side, loose thread so just might occur and fall the problem of going in the variable-speed drive (5), the result not only can make the tail yarn come off from bobbin (22), but also can disturb the operation of variable-speed drive (5).As a kind of ancillary method, it is such to press Fig. 3, and variable-speed drive (5) is contained in bobbin (11) minor diameter one side, and bobbin (11) is inserted on the bobbin bank (2).

By shown in Figure 3, adjustable speed-changing driving device (5) is installed between two groups of rope sheave drivings device (72) and (73), transfer element adopts instantaneous power-transfer clutch (50) simultaneously, the rope sheave (730) of first group of rope sheave driving device (73) is fixed on the main driving axle (4), come transmission rope sheave (731) by rope (732), rope sheave (731) is contained on the same axle (65) with first group of rope sheave (720), and this root axle is being supported by bearing (66).Two rope sheaves (731) and (720) are interconnecting by instantaneous power-transfer clutch (50), and this instantaneous power-transfer clutch is eddy current clutch or magnetic-powder clutch for example, and it is controlled by control setup (9).Rope sheave (721) obtains the power that transmits from rope sheave (720) via rope (722).

Same in such version, the transmission speed of bobbin (11) can accurately be mated with desirable tension force.Because instantaneous power-transfer clutch (50) can make rope sheave (731) pass to rope sheave (720) to desirable amount of spin.Drive roll (34) and bobbin (11) be not by main driving axle (4) direct drive.Exactly their speed is subjected to instantaneous power-transfer clutch (50) control.

According to desired degree of regulation, instantaneous power-transfer clutch (50) by control setup (9) by multistage or preferably regulate in stepless mode.But with regard to the classification adjusting of instantaneous power-transfer clutch (50) itself, it is much accurate that the power-transfer clutch of other type of knowing compared with those people is wanted.

Because the straight gear transmission device (7) among Fig. 1 is uncontrollable, equally also available rope sheave transmission (72) substitutes.

Shown in Figure 4, friction roller (3) also is by the transmission of garden week, and friction roller (3) has a lasso (33) not only can also can drive friction roller itself by variable-speed drive (5) in order to drive bobbin (11).Therefore for instance, replace straight gear (70) also to be fine with friction wheel in Fig. 1, friction wheel and lasso (33) the ， And that is close together drives friction roller (3) or drive roll (34) with this.

According to Fig. 4, main driving axle (4) is arranged in the outside ， And of friction roller (3) and the variable-speed drive (5) by the outside comes transmission.Variable-speed drive (5) is one the transmission device (6) of cone pulley to be housed in the drawings, as what describe among Fig. 1.Cone pulley (62) and a friction wheel (74) the ， And that connects together drives the whole of friction roller (3) or only drives drive roll (34) with it, and friction wheel (74) is being supported by bearing (66) together with cone pulley (62).In the example that this structure forms, friction roller (3) is installed on the axle (39), and this root axle is being supported by two bearings (390) and (391).The transmission of bobbin (11) as previously mentioned.The passive element of the friction drive that invests variable-speed drive (5) of captiveing joint with friction roller (3) is lasso (33), and the driving part of the transmission device of friction wheel is a friction wheel (74) that links to each other with cone pulley (62).

In the version example of introducing in front, the transfer element (61) of cone pulley transmission device (6) and second stage control setup (51) are all regulated by device (9).The adjusting of this respect is that yarn tension sensor (90) is undertaken by electric adjusting, that is to say to realize by first order control setup (96).Here the version of yarn tension sensor (90) how, do not play what effect basically.Therefore for instance, yarn tension sensor does not contact yarn and can work yet, and the numerical function of the line that the quilt that the tension force of yarn can pass through to be measured draged is tried to achieve or tried to achieve with other method.

In the version shown in Figure 5, transfer element (61) is mechanically regulated by yarn tension sensor (90).Yarn tension sensor (90) is for lightly made of plastic, and it has a feeler lever (91), is contained in swingably on the little axle (93) by bracket (92).Little axle (93) by bearing (94) rest.Feeler lever (91) is remained feeler lever by the effect of a torque spring (95) Ding lives in And by this torque spring (95) and contacts with yarn (10), so the size of yarn tension is just depended in the swing of feeler lever.For this purpose, an end of torque spring (95) is fixed in the bearing (94), and the other end is fixed on the bracket (92).

Bracket (92) middle side part outside the end face (920) of its garden shape is equipped with a pin (921), it inserts in the slotted hole (820) of fritter spare (82), this fritter spare (82) is parts of guide rod (81), and it links up feeler lever (91) and shift fork (80).Fritter spare (82) is contained on the push rod (83), and fritter spare (84) also is equipped with in the other end of push rod.The piece spare of other end (84) is by being contained in the elbow pole (85) on the frame (18).Link to each other with another root drive link (86), make drive link and main driving axle (4) keeping parallelism by means of pilot hole (87).Adorn shift fork (80) on the drive link (86), having two pairs of pins (800) and (801) (can only see a pin sometimes) to stir transport element (61) (see figure 1) of bevel gear drive unit (6) on it.

In the version shown in Figure 5, a slotted hole (820) of opening according to the sense of motion of push rod (83) is arranged on piece spare (82), when yarn tension is little, can not regulate transfer element (61) immediately like this, so Yarn senser (90) can not take place transfer element (61) is regulated when compensating less tension fluctuation.As what introduced, yarn tension sensor (90) constitutes first order control setup (96) and is used for the fluctuation of compensating for periodic yarn tension, and this tension fluctuation is a (see figure 1) of impelling yarn (10) to swing back and forth and cause owing to fro guiding-yarn device (17).When just having begun coiling when coiling tapered bobbin (11) or on the bobbin (22) at sky, this first order control setup (96) is enough to be used for bearing the tension fluctuation of yarn fully.

The yarn after a bit of time of reeling will be filled in space (seeing from (110) to (111) this section among Fig. 6) between friction roller (3) and the bobbin (11) in sleeve (33) part in addition.So the garden week of bobbin is more great than transmission those a bit of (112) in (110) arrive (111) this segment limit, so that when the transmission speed of cross-wound bobbin (11) was corresponding with its transmission range (112), bigger around (110) and (111) scope be interior understood the more yarn (10) of coiling.This just makes the tension force on the yarn (10) increase, so yarn tension sensor (90) just swings among this segment limit of II-III (see figure 7) in original scope I-II.This drives piece spare to pin (921), and (82 〕 And are by the control of lever (81) realization to transfer element (61), so the also corresponding change of the speed ratio of variable-speed drive (5).So when exceeding the pre-determined yarn tension limit, the winding speed of yarn (10) will descend.Device (90) and the piece spare (82) of yarn tension limit by the yarn tension sensor comes definite.Thereby the fluctuation of yarn tension returns to again in the original variation range.Yarn tension sensor (90) moves around in this segment limit of I-II again, and the yarn tension fluctuation that the cycle changes in this interval is compensated by fork, and at this time adjustable transfer element (61) has guaranteed higher winding speed.

Therefore variable-speed drive (5) just becomes the second stage control setup of having mentioned the front (51), is used for compensating the amplitude offset of yarn tension fluctuation.

Because amplitude offset is relevant with the diameter of bobbin (11), second stage control setup (51) can be different with the version of having introduced, can be independent of first order control setup (96) and come work, the recruitment of bobbin diameter is depended in the adjusting of second stage control setup (51) at this moment.If second stage control setup (51) can be taken over first order control setup (96) and regulate when surpassing the yarn tension scope of stipulating, just can control yarn tension and tube quality very accurately.

To the out-of-action yarn tension fluctuation range of second stage control setup (51),, can regulate according to Fig. 5.As represented among this figure, in order to obtain desirable adjusting accuracy all the time, being parallel to push rod (83) on piece spare (82) has one to regulate bolt (821), and it reaches in the slotted hole (820) always and goes.Changing simultaneously by size of adjusting this adjusting bolt (821), slotted hole (820), the action sensitivity of this device also changes thereupon.

If the variation of every bit yarn tension has all required to regulate action, then can adjust accordingly or substitute slotted hole (820) and match with pin (921) to adjusting bolt (821) with post hole, a garden.

In order to make on the station of doff not, feeler lever (91) though remain static also can move, and backing pin (940) is housed on bearing (94), and two piece spares (82) are not captiveed joint with push rod (83) with (84).As shown in Figure 5, (from viewer's direction) all has resilient coupling (830) and (833) of usefulness pressure spring formation in each piece spare (82) and (84) front, headed on by the regulating ring (831) and (834) that are enclosed within on the push rod (83).Stop tab (832) and piece spare (835) also are housed on piece spare (82) and (84).

For the structure of introducing, resilient coupling (830) is all passed through in each action of feeler lever (91) and (833) pass to drive link (86).

According to Fig. 5, yarn feeler lever (91) is positioned at the next door of block pin (940).If yarn feeler lever (91) is just being pushed away by block pin (940) and is swinging.That pin (921) is done is garden Zhou Yundong, and there is a component motion all the time in the pin (921) that is arranged in slotted hole (820) on the direction of joint piece (830).When drive link (86) when being blocked, because this station is a winder not, so transfer element (61) is not just regulated, so the piece spare (82) that cooperates with pin (921) just can only drive push rod (83) by resilient coupling (830), till baffle ring (835) is run into piece spare (84).The continuation campaign of piece spare (82) is limited by resilient coupling (830).

When feeler lever (91) moved towards backing pin (940) opposite sense, piece spare (82) was blocked by baffle ring (832).If drive link (86) is plugged, then piece spare (84) can not be along with push rod (83) motion, so the continuation campaign of push rod (83) is limited by elastic coupling spare (833).

Device through remodeling provides in Fig. 6, by means of the device of this remodeling equally can compensating for periodic yarn tension Bo Dong And and prevent that by changing winding speed yarn tension from surpassing the limit of regulation by way of parenthesis.First order control setup (96) has a yarn tension sensor (90) (identical with the structure example that provides) in Fig. 5 it can be given by torque spring (94) around little axle (93) Zhuan Dong And and tightening.Yarn (10), guides by the thread-carrier (150) that is contained on the frame (18) in the top of feeler lever (91) by outlet roller (13) and (14) guiding in feeler lever (91) below.

With the guides of yarn tension sensor (90), a stop tab (832) is arranged on the push rod as push rod (83).Block (832) is that the And that can regulate and it have such effect on push rod (83), be that yarn tension sensor (90) (see figure 7) yarn tension fluctuation of periodically occurring of motion compensation freely in this section of I-II interval changes, and can not collide on the block (832).The adjusting of block (832) on push rod (83) therefore also just determined the boundary ， And of interval I-II and interval II-III and also determined the limit of yarn tension thus.

Push rod (83) is being supportted by regulating ring (834) and resilient coupling (833) by guides (880) the guiding ， And of elbow pole (88) one ends.Elbow pole (88) is contained in frame (18) and goes up And and block the pin (802) of shift fork (80) with its empty end, there are two slotted holes (803) and (804) and two guide bolt (180) and (181) that are contained on the frame (18) to make shift fork be parallel to the transmission shaft of friction roller (3) (4) motion on the shift fork.

Block (805) is housed on the shift fork (80), and it is used with the position block (182) that is fixed on the frame (18).In the structure example of having introduced, in the middle of these two blocks one, promptly the block (805) on the shift fork (80) can be regulated, so do this block with an adjusting bolt.Also has a reset attachment (89) in addition.According to shown in Figure 6, it is a retracing spring (890), and one of spring is fixed on the frame (18), and the other end is fixed on the shift fork (80).

Because the effect of reset attachment (89) makes shift fork (80) and transfer element (61), at first order control setup (96) not in second stage control setup (51) transfer function power, be in the initial position, this initial position is determined by block (182) and (805).The determining of initial position directly has influence on determining variable-speed drive (5) transmission speed ratio.So the size of tensile stress just depends on position block (182) and (805) and position or adjusting on this station.Just can must not determine the maximum transmission ratio that surmounts, the i.e. maximum line velocity of bobbin (11) by regulating block (805).

When bobbin (11) constantly when big, owing to the expansion in (110) and (111) these two sections intervals has surpassed normal ratio, caused the winding speed rising thus, this just makes the tension range of the yarn tension overshoot that periodically occurs, at this moment yarn tension sensor (90) will react to some extent, is displaced in interval II-III.Yarn tension sensor (90) is run into block, and (832 〕 Shang And lift shift fork (80) by push rod (83) and elbow pole (88) from block (182) there.Shift fork (80) leaves its initial position so promote transmission regulating ring (61), is moved to the major diameter district of cone pulley (60) and the minor diameter district of cone pulley (62).At this moment reduce the rotating speed of the bobbin (11) that drives by friction roller (3), thereby avoided yarn tension to surpass the scope of regulation.Thereby reduced the linear velocity of the bobbin (11) that rotates by friction roller (3).At this moment winding speed also descends, and yarn tension also weakens, and yarn tension sensor turns back to interval I-II again.Because the effect of retracing spring (890) makes shift fork (80) have such trend, transmission regulating ring (61) is turned back on the initial position.The linear velocity of bobbin (11) is improved, make the fluctuation of yarn tension be offset to II-III interval thereby cause yarn tension to rise again.This fluctuation will last till that always I-II and II-III occur till the transient equilibrium between the district.Percentum diameter difference between these several sections is just more and more littler in (110) on the bobbin (11), (111) and (112) when bobbin constantly increases in addition, so the skew of yarn tension sensor (90) is also more and more littler.

The structure example that reset attachment (89) also can adopt among Fig. 1 to Fig. 5 to be introduced.It has been avoided when yarn tension sensor (90) leaves interval I-II, transmit the mobile excessive of regulating ring (61), to such an extent as to producing yarn tension thus descends, and must oppositely regulate yarn tension sensor (90) at once, for example, use connector (830) and regulating ring (831) (Fig. 5).Also such danger can occur at this, i.e. yarn tension fluctuation finally no longer can be compensated, but fluctuates severely more more.This phenomenon has only with reset attachment and could prevent reliably.

According to Fig. 6 and Fig. 7 yarn tension sensor (90) flange (900) is arranged, its basic and Hang And of main driving axle (4) Ping stretches to friction roller (3).This flange (900) use that can match with the arm of fender guard, the arm of fender guard does not draw, and it can for example when beginning to spin, put yarn tension sensor (90) on the position of IV from the yarn road along vertical operation of machine always.Because shift fork (80) can not be realized this motion by block (182), so be contained in push rod (83) and transmission regulating ring (61) connector (833) between the shift fork (80) just, one accessory channel arranged when putting the position of IV at yarn tension sensor.

What Fig. 8 drew is the structure of another kind of reset attachment (89).Cone pulley (62) is installed on the little axle (65), and it has a bevelled angle with respect to the transmission shaft that cone pulley (60) are housed (4).Although cone pulley (60) has identical tapering with (62), but because this angle of inclination converges at some cone pulley (60) and extension line of the side surface of (62), therefore have a component P to act on the transmission regulating ring (61), this power can make regulating ring (61) turn back to the initial position.

By shown in Figure 8, convergent angle (angle α) can be adjusted, and at this moment cone pulley (62) is contained on the elbow pole (68) by middle lever (67).Elbow pole (68) can have a slotted hole (681) around little axle (680) swing on its free end, adjusting cotter (682) is stuck in the hole.Middle lever (67) withstands on the compression spring (670), and spring is fixed on the frame (18) by rights.

(angle α) obtains like this according to Fig. 9 convergent angle, and promptly two cone pulleys (60) have different taperings with (62) and (see angle β ₁And β ₂), component P acts on the transmission regulating ring (61), and this component makes regulating ring turn back to the initial position.In order to ensure transmission ring (61) long service life, the tapering of the interior garden side face of ring and outer garden side face is identical with two bevel wheeies (60) and (62), therefore transmits the tapering of regulating ring (61) and being complementary of cone pulley (60) and (62).

Above-mentioned introduction points out that multiple mode conversion can be made in the theme of being applied for, can continue remodeling by feature exchange or equivalent substitute and combination with one another, and these all belong to scope of the present invention.For instance, can replace block (805) and (182), they belong to the part of shift fork (80), with a block, transmission ring (61) are blocked, so this block just defines transmission ring (61) maximal regulated stroke in one direction.

Claims (40)

1, the method for yarn that the coiling constant speed is supplied with on a cross-wound bobbin is characterized by, the fluctuation of yarn tension be compensated and can be by way of parenthesis variation by winding speed prevent to surpass given yarn tension limit.

2, this method is characterized by according to claim 1, and cross-wound bobbin is driven by the determined maximum line velocity of desired tensile stress, fluctuates for fear of yarn tension and departs from the scope of regulation, and this speed will slow down.

3, in order to realize the device of this method, according to claim 1 or 2, at a friction roller that a supporting cross-wound bobbin is arranged and drive on reeling the position by its garden week, it is characterized by, first order control apparatus (96) is in order to the cyclic fluctuation of compensation yarn tension, and second stage control apparatus (51) is used for compensating the scope that departs from regulation of yarn tension.

4, this device is characterized as according to claim 3, and first order control apparatus (96) is made up of a yarn tension sensor (90), when it has departed from given scope at yarn tension, can be given to second stage control apparatus and make it to work.

5, at the multireel that such device is arranged in the spinning machine of position, according to claim 3 or 4, be characterized as, second stage control apparatus (51) is an adjustable variable-speed drive (5), its driving link (60,731) is connected with a plurality of imput shaft (4) of reeling the position are arranged, its driven member (62,720) links to each other with friction roller (3), be connected with drive element (62,720) with certain gear ratio by transfer element (61,50) at this driving link (60,731), transfer element is controlled with first order control apparatus (96) and is connected.

6, this device is characterized as according to claim 5, and variable transmission mechanism (5) can be regulated under the situation that does not surmount maximum transmission ratio.

7, this device is characterized as according to claim 5 or 6, and transfer element (61,50) can step-less adjustment.

8, this device is characterized as according to one of in the claim 5 to 7 or several, and driving link (60) and driven member (62) all are the garden cone pulleys, can make axial adjustment by the transfer element between them (61).

9, this device according to Claim 8, be characterized as, with a regulating ring as transfer element (61).

10, this device is characterized as according to Claim 8 or 9, and transfer element (61,50) has an adjustable initial position and a Bringing-back mechanism (89), in order to turn back to according to maximum transmission ratio and definite initial position.

11, this device is characterized as according to Claim 8 with 10, and the initial position can be determined by stop tab (805,182).

12, this device is characterized as according to claim 11, and adjustable stop tab (805,182) has the shift fork of an adjustment transfer element (61), and shift fork is driven by reset attachment (89).

13, this device is characterized as according to claim 12, and an adjustable stop tab (805) is arranged on the shift fork (80).

14, this device is characterized as according to one of in the claim 10 to 13 or several, and reset attachment (89) is a retracing spring (890).

15, this device is characterized as according to one of in the claim 10 to 14 or several, and the conical surface of bevel wheel (60,62) is used for as reset attachment (89).

16, this device is characterized as according to claim 15, and driven member garden cone pulley (62) is contained on the wheel shaft (65), this wheel shaft and imput shaft (4) relative tilt, and driving link garden cone pulley (60) just is installed on the imput shaft.

17, this device is characterized as according to claim 16, and wheel shaft (65) degree of dip of driven member garden cone pulley (62) can be regulated.

18, this device is characterized as according to claim 17, and adjustable wheel shaft (65) is installed on the lever (68), and this lever has an adjusting eccentric stiffener (682).

19, this device is characterized as according to claim 15, and garden cone pulley (60,62) has different taperings.

20, this device is characterized as the tapering that the side surface of transfer element (61) provides the different taperings with garden cone pulley (60,62) to be complementary according to claim 19.

21, this device is according to Claim 8 one of in 20 or several, be characterized as, friction roller (3) is an accentric with respect to imput shaft (4), friction roller (3) admits the eccentric bearing of installing (40) of imput shaft (4) and imput shaft (4) supporting by one, and the secondary part of friction roller (3) is an inner conical face (32).

22, this device is characterized as according to one of in the claim 3 to 21 or several, and imput shaft (4) is installed in the outside of friction roller (3).

23, this device is characterized as according to one of in the claim 3 to 22 or several, variable-speed drive (5) by an other transmission device (7,72,73) and friction roller (3) with or link to each other with imput shaft (4).

24, this device is characterized as according to claim 23, and other transmission device (7,72) is contained between driven member (62,7201) and the friction roller (3).

25, this device is characterized as according to claim 23 or 24, and other transmission device (72,73) is the rope sheave transmission.

26, this device is according to one of in the claim 4 to 25 or several, be characterized as, yarn tension sensor (90) has a feeler lever (91) to survey the tension force of the yarn (10) of supplying with wind2 (1), and this feeler lever (91) links to each other with the transfer element (61) of variable-speed drive (5) by a lever (81).

27, this device is according to one of in the claim 4 to 26 or several; be characterized as; yarn tension sensor (90) has a flange (900) that extends in parallel with friction roller (3); it can block the protection mechanism of certain specified in a plurality of positions of reeling coiling position selectively with an adjustment (adjusting) lever.

28, this device is characterized as according in the claim 4 to 27 one or several, and yarn tension sensor (90) is made of plastics.

29, this device is characterized as according in the claim 26 to 28 one or several, is connected with a slotted hole (820) between feeler lever (91) and the guide rod (81).

30, this device is characterized as according to claim 29, and the size of slotted hole (820) can be regulated.

31, this device is according in the claim 26 to 28 one or several, be characterized as, yarn tension sensor (90) is the guide piece (81) of guide rod, it is the part of drive link, it is one adjustable that drive link has, shift to the thrust block (832) of device from yarn tension sensor (90) limit, make transmission part (61) leave the initial position by this device.

32, this device is characterized by according to claim 31, and a relatively-movable transmission elastic coupling spare (833) is arranged between drive link (83) and transfer element (61).

33, this device, is characterized by for coiling taper cross-wound bobbin according in the claim 5 to 32 one or several, and variable-speed drive (5) places taper cross-wound bobbin (11) minor diameter one end of wind2.

34, this device is characterized as according to claim 33, and friction roller (3) has two dance rollers (35,36,37,38) at least, and among these dance rollers (35,36,37,38), a drive roll (34) is arranged.

35, this device is characterized as according to claim 34, the taper cross-wound bobbin (11) of drive roll (34) in inserting wind2 large diameter axially on, Traverse Displacement Unit is between dance roller (35,37,38,36).

36, this device is characterized as according to claim 34 or 35, and drive roll (34) is by its outer garden surface drive bobbin.

37, this device is according in the claim 34 to 36 one or several, be characterized as, drive roll (34) is to be connected with a Transmission (721) by a tube-shaped attaching parts (340), this Transmission is at an end of friction roller (3), driven by variable-speed drive (5), at this moment the dance roller of settling between drive roll (34) and Transmission (721) (35) is seated on the tube-shaped attaching parts (340).

38, this device is characterized by according to claim 37, and the other end of the tube-shaped attaching parts (340) of drive roll (34) has a bobbin shape to prolong (341) can also refill a dance roller (36) at least.

39, this device is characterized as according in the claim 3 to 38 one or several, the roll surface that friction roller (3) surface has a lasso (33) to constitute.

40, this device is characterized as according to claim 39, and lasso (33) is carved with decorative pattern on the surface.

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