CN1733994A - Method for withdrawing yarn wheel in tophan pot spinning process - Google Patents
Method for withdrawing yarn wheel in tophan pot spinning process Download PDFInfo
- Publication number
- CN1733994A CN1733994A CN 200510092349 CN200510092349A CN1733994A CN 1733994 A CN1733994 A CN 1733994A CN 200510092349 CN200510092349 CN 200510092349 CN 200510092349 A CN200510092349 A CN 200510092349A CN 1733994 A CN1733994 A CN 1733994A
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- CN
- China
- Prior art keywords
- spinning
- yarn
- reel
- pot
- spindle
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
- D01H9/04—Doffing arrangements integral with spinning or twisting machines
- D01H9/06—Removing yarn from centrifugal cups on to yarn carriers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
When using the pot spinning, the yarn coil stacking on the inner wall of the rotary spinning pot must be catched after spinning course. A doffing spindle is inserted into the top and yarn ball, the spindle and top are brought to a synchronous rotating speed, the rotating speed is reduced and the ball is transferred onto the spindle under lessening centrifugal force. According to the invention, the spinning tension during spinning is modified so that on subsequent removal of the ball no yarn layers with strongly deviating spinning tensions are transferred to the spindle.
Description
Technical field
The present invention relates to a kind of method that is used to take out the reel for yarn preparatory process, its thread layers is utilizing spinning tension to be stacked on the inwall of rotary spinning jar during the spinning process, wherein, the doff spindle is immersed in spinning pot and the reel for yarn, make doff spindle and reel for yarn generation synchronous rotational speed and reduce rotating speed, and transfer on the doff spindle under the situation that reel for yarn is under centrifugal force fallen.
Background technology
Prior art DE 195 48 674 A1 disclose a kind of method of the type.In disclosed this method, made full use of this situation, promptly when the centrifugal force that stops for taking-up reel for yarn spinning pot descends, reel for yarn is no longer on the inwall attached to spinning pot, but owing to its inner tension force that exists roughly shrinks, and can be contracted in seemingly on the doff spindle thus, and needn't be for taking out the reel for yarn rewinding.Yet for the thread layers that makes reel for yarn can not be offset and be damaged thus when being received by the doff spindle, before spinning pot and the parking of doff spindle, the doff spindle is temporarily with the rotation speed operation identical with spinning pot.
DE 30 12 469 A1 disclose similar method, but wherein reel for yarn is not to be contracted on the doff spindle, but the doff spindle roughly opens when taking out reel for yarn, thereby can reliably reel for yarn be taken out from spinning pot.
Yet fact proved, directly take out the reel for yarn existing problems by the doff spindle, even because carefully also can not prevent unfinished in this regard thread layers again from the slippage of doff spindle and make subsequently rewinding become the cross winding bobbin difficulty that becomes, if be not not if possible.The reason of this situation is, the centrifugal force that in spinning process, occurs under big thread layers internal diameter situation, be in than have less under the higher tension force of the thread layers of warp.Therefore because very different spinning tensions appears in the instantaneous internal diameter of the interior thread layers of spinning pot, after taking out reel for yarn, be delivered to the there by the doff spindle.Compare the outer of reel for yarn therefore be on the doff spindle under the obviously stronger tension force with internal layer.This tension force distributes and causes alleged layer skew, and this is very unfavorable for the rewinding on cross-winding bobbin winder.
Summary of the invention
The objective of the invention is to, carry out following perfectly, avoid as far as possible receiving later skew by the doff spindle in the thread layers of reel for yarn to starting method that described type has an advantage itself.
This purpose is achieved thus, promptly during the spinning process-as considering that the back transfers to reel for yarn preparatory process on the doff spindle-just spinning tension is exerted one's influence, make doff spindle thread layers when taking out reel for yarn not bear the spinning tension that obviously differs from one another.
That is to say, difference from prior art is, be not after reel for yarn is for example by this processing of rotating speed of synchronous and reduction spinning pot and doff spindle, just to take preparation measures, but this preparatory process just carried out during spinning process never to have up to now with brand-new mode for taking out reel for yarn.Recognizing that the rotating speed with spinning pot changes now, makes the centrifugal force that acts on thread layers at least almost constant under spinning tension and the situation that centrifugal force is directly proportional during normal spinning process.That is to say the rotating speed of spinning pot is controlled like this, make it along with thread layers instantaneous internal diameter varies at that time.The rotating speed of spinning pot is therefore minimum under the highest situation of centrifugal force, that is to say, if thread layers is in the spinning pot inner wall area, and rotating speed is the highest under the inwall situation farthest in thread layers.Therefore, though usually in the terminus of reel for yarn, just can be reached for cost with the maximum (top) speed of spinning pot, this situation since be improved significantly the end characteristic be compensated more when rewinding becomes cross winding bobbin on bobbin winder.
Being worth when needing pursuing when centrifugal jar like spinning keeps the constant fact of spinning tension itself to obtain open by inhomogeneous DE 24 196 47 by the control rotating speed.Yet what exist here is a diverse target, because be used for stretching or the centrifugal spinning jar of the chemical fibre silk that part stretches, the spinning that should avoid being stacked on the spinning pot inwall fractures owing to tension force is too high.Thus, do not relate to spinning tension, because yarn spins, and spinning pot only has the function of coiler device here, because described chemical fibre silk no longer can utilize normal cross winding device to reel.In addition, reel for yarn is not transferred on the doff spindle that immerses in the reel for yarn at all.
The invention still further relates to a kind of device that is used to implement described method, have one and be connected the spinning pot that to regulate on the rotary actuator, to treat that twisted yarn is transported to the spinning pot inwall to form the yarn-guide tube of reel for yarn thread layers for one, one for taking out the synchronized device of rotary actuator that reel for yarn immerses in the spinning pot and is connected the doff spindle that can regulate on the rotary actuator and is used to make spinning pot and doff spindle.
According in this device of the present invention, be speed regulator of rotary actuator distribution of spinning pot, it improves the rotating speed of spinning pot along with the increasing of thread layers and spinning pot inwall distance.
What have advantage is that speed regulator is adjusted like this, the product that makes the rotating speed of spinning pot and thread layers internal diameter root during spinning process at least near constant.This adjustment of speed regulator relates to this understanding, and the skew when promptly thread layers is taken out by the doff spindle is to be caused by different centrifugal force, and makes great efforts now centrifugal force is just remained unchanged during spinning process as far as possible.
Description of drawings
Embodiment by accompanying drawing describes other advantages of the present invention and feature below.Wherein:
Fig. 1 illustrates spinning pot axial section during first winding method soon after spinning process begins;
Fig. 2 illustrates spinning process and finishes not long ago identical axial section;
Fig. 3 was illustrated in before importing the doff spindle taking-up reel for yarn in the spinning pot and has the spinning pot of putting reel for yarn in order;
Fig. 4 illustrate reel for yarn be contracted on the doff spindle after according to the axial section of Fig. 3;
Fig. 5 is depicted as the curve map that explanation is used to take out method first winding method of reel for yarn preparatory process;
The axial section of spinning pot when Fig. 6 illustrates second winding method during the spinning process;
Fig. 7 is depicted as the curve map that explanation is used to take out method second winding method of reel for yarn preparatory process.
The specific embodiment
Fig. 1 and 2 illustrates one-sided unlimited rotary spinning jar 1 first winding method in top during the spinning process.The rotating shaft 2 of spinning pot 1 is connected on the rotary actuator adjusted 3 that only schematically illustrates.Corresponding with C reciprocating yarn-guide tube 4 with direction of arrow B is in top immersion spinning pot 1 during the spinning.Hollow shaft by yarn-guide tube 4 will yarn 5 centerings from a unshowned drafter import in the spinning pot 1 on direction A.Yarn 5 comprises a crank-type guide portion 6, and yarn 5 is rotated when it is stacked on spinning pot 1 inwall 7 thus.Inwall 7 has diameter d
0Yarn 5 is guided there, makes it because the centrifugal force of rotary spinning jar 1 remains on the inwall 7.
On inwall 7, produce during spinning and a kind ofly form reel for yarn 8, that is to say that the internal diameter of thread layers 9 and reel for yarn 8 constantly dwindles to internal expansion by thread layers 9.According to Fig. 1, the inner diameter d of thread layers 9
1Also quite big, because spinning process just begins.According to Fig. 2, the inner diameter d of thread layers 9
2Very little, it is big that therefore reel for yarn 8 has become, because spinning process is near finishing.
Be under the spinning tension that particularly produces in the thread layers 9 that forms on the reel for yarn 8 by centrifugal force.Obviously, this spinning tension precondition under the intermediateness of Fig. 1 is that rotating speed is constant, greater than the intermediateness of Fig. 2, because diameter d
1Greater than diameter d
2, and centrifugal force is bigger in the increasing diameter added-time.
If reel for yarn 8 reaches the fully loaded degree of its regulation, situation roughly is equivalent to the state of Fig. 2, reel for yarn 8 must be taken out from spinning pot 1 in some way so, so that therefrom produce a kind of processing cross winding bobbin commonly used to be asked that on loom or this class device, continues subsequently.
Known aspect centrifugal jar like spinning have a various scheme that is used to take out reel for yarn 8.
In the flexible program that present case does not have to use, on the phase I is in reel for yarn in the spinning pot, only form the final spinning twisting of a part, and yarn just obtains remaining spinning twisting in second stage, promptly when the reel for yarn rewinding is on cross winding bobbin, wherein, spinning pot continues rotation.
In same here another known method of not using, spinning twists in spinning pot inside and becomes a spinning bobbin that is applicable to Peg-trays commonly used with regard to rewinding.
According to the present invention, with the so-called contraction doff of the beginning corresponding employing of described prior art, referring to Fig. 3, according to this contraction doff doff spindle 10 is immersed in spinning pot 1 and the reel for yarn 8, make doff spindle 10 and spinning pot 1 enter synchronous rotational speed and reduce rotating speed, so that reel for yarn 8 is contracted on the doff spindle 10 under the situation that centrifugal force reduces.
Self-evident, before importing doff spindle 10, pull out yarn-guide tube 4.It is emphasized that spinning pot 1 also will continue rotation, therefore the centrifugal force that reel for yarn 8 is fixed on the inwall 7 is existed when importing doff spindle 10 in the spinning pot 1 after spinning process finishes.
Continue under the situation of rotation at spinning pot 1 for taking out reel for yarn 8 according to Fig. 3, doff spindle 10 immerses the inside of reel for yarn 8 according to direction of arrow D.The tube core diameter de that exists on the reel for yarn 8 when spinning process finishes is slightly larger than the diameter of doff spindle 10, thereby does not temporarily also contact between the thread layers 9 of reel for yarn 8 and the doff spindle 10.
At first, drive doff spindle 10 now and be rotated motion, make doff spindle 10 and spinning pot 1 have synchronous rotating speed.Doff spindle 10 also is connected on adjustable rotary actuator 11 for this reason.Thus, there is the device 12 that is used for synchronization in Reference numeral 12 expressions.Therefore at first make synchronizationization, then reduction of speed exactly drops to centrifugal force is obviously reduced.From a limit of determining, reel for yarn 8 separates with the inwall 7 of spinning pot 1 and is contracted on the doff spindle 10.This point is actually unexpected generation.
After Fig. 4 is illustrated in centrifugal force now and fully descends, separate with the inwall 7 of spinning pot 1 and be contracted in reel for yarn 8 on the doff spindle 10.No matter be that spinning pot 1 or doff spindle 10 all can stop, and doff spindle 10 is upwards pulled out from spinning pot 1 corresponding to direction E now.
If the rotating speed of spinning pot 1 remains unchanged during spinning process, so according to the instantaneous inner diameter d of thread layers 9
1, d
2, because different spinning tensions also appears in different centrifugal force.These different spinning tensions can be delivered on the reel for yarn 8 that is contracted on the doff spindle 10.Correspondingly the skin of this pulled down yarn coil of wire 8 is compared with internal layer and is under the obviously stronger tension force then.If reel for yarn 8 is contracted on the doff spindle 10, this different tension force distribution can cause thread layers 9 skews.
For avoiding this point, according to the present invention during the spinning process-as considering that the back transfers to preparatory process on the doff spindle 10-just spinning tension is exerted one's influence with reel for yarn 8, promptly doff spindle 10 thread layers 9 when taking out reel for yarn 8 is not born the spinning tension that obviously differs from one another.This situation is exactly that the rotating speed of spinning pot 1 changes during spinning process, makes the centrifugal force that acts on thread layers 9 at least near constant.
Therefore the rotary actuator 3 of distributing to spinning pot 1 according to Fig. 3 and 4 is connected on the speed regulator 13, and this speed regulator changes the rotating speed of spinning pot 1 during spinning process, make the centrifugal force that acts on thread layers 9 approaching at least constant.Minimum as shown in Figure 1 in the rotating speed of spinning pot 1 so first winding method when spinning process begins, and the highest as shown in Figure 2 when spinning process finishes.
The angular velocity omega of inner diameter d is relevant at random with crank-type circulation yarn district 6 thread layers 9, is applicable to the following relationship formula under the situation of centrifugal force considering:
m？ω
2(d)d/2＝m？ω
2(d
0)d
0/2
Therefrom draw:
Therefrom produce relational expression for rotation speed n:
N (d)? √ d=n (d
0)? √ d
0=constant
The explanation of this relational expression should be adjusted speed regulator 13 like this, and the product that makes the rotation speed n of spinning pot 1 and thread layers 9 inner diameter d roots is at least near constant.
Now otherwise introduce the present invention once more according to Fig. 1-4 first winding method by the curve map of Fig. 5.Curve map is in the rotation speed n that spinning pot 1 is shown on the ordinate and time t is shown on abscissa.Part abscissa selects to adopt the inner diameter d of spinning pot 1 inwall 7 as another kind
0, the inner diameter d of thread layers on 9 blanking times
1, d
2And the tube in-core footpath d of the reel for yarn 8 of finished product spinning
e
The hypothesis spinning process begins on time point 0 now.According to curve 14 spinning pots 1 begin the rotation, that is to say, spinning pot 1 from static at first to initial rotation speed n
0Quicken, it is at time point t
0On reach.Having only could from real here spinning process.At time point t
0Also do not have reel for yarn 8 on the inwall 7 of last spinning pot 1, thus with time point t
0Corresponding is the diameter d of inwall 7
0
At time point t
0And t
eBetween carry out real spinning process now.Curve 14 is therefore with the decline of centrifugal force is corresponding rises gradually during the spinning, until at final time point t
eOn reach maximum speed n
eWith time point t
eThat corresponding is the tube core diameter d of thread layers 8
e
Two intermediatenesses are shown, promptly at a time point t in the real spinning range of curve 14
1On rotation speed n
1With at a time point t
2On higher rotation speed n
2With rotation speed n
1Corresponding is the inner diameter d of thread layers 9
1, with rotation speed n
2Corresponding is the instantaneous inner diameter d of thread layers 9
2
Suppose that now real spinning process is at time point t
eLast end.Then yarn-guide tube 4 is shifted out and doff spindle 10 is delivered to the inside of spinning pot 1 from the inside of spinning pot 1.The rotating speed of doff spindle 10 adopts dotted line 15 to illustrate.
As can be seen, at time point t
eAnd t
sBetween doff spindle 10 quicken according to its rotating speeds of curve 15, and the rotating speed of spinning pot 1 descends now according to curve 14 simultaneously.Suppose at time point t
sThe rotating speed of last spinning pot 1 and doff spindle 10 adopts rotation speed n
sAccurately synchronously, it more unexpectedly is equivalent to rotation speed n here in expression
0Self-evident, the rotating speed of spinning pot 1 does not need part to descend, but this point is preferred.
From time point t
sRise, the synchronization of spinning pot 1 and doff spindle 10 changes and descends, until at time point t
uLast parking.Yet rotation speed n before this
DAt time point t
DLast process is not enough to reel for yarn 8 be remained on the inwall 7 of spinning pot 1 at centrifugal force under this rotating speed.At slow-speed of revolution n
DDown, almost sudden contraction is on the external diameter of doff spindle 10 for reel for yarn 8, and wherein, reel for yarn 8 separates simultaneously with the inwall 7 of spinning pot 1.
If spinning pot 1 and doff spindle 10 stops, pull out 1 along direction of arrow E from spinning pot referring to Fig. 4 doff spindle 10 so.
Such as can be seen from Figure 5, at time point t
0And t
eBetween be not with the spinning of the not variable speed of spinning pot 1.According to the present invention, the rotation speed n of spinning pot 1 improves during real spinning process, and spinning tension is almost remained unchanged on each inner diameter d of thread layers 9.If thread layers 9 is transferred on the doff spindle 10 by shrinking doff, avoid above-mentioned difficulties thus.
Therefore core of the present invention is, is just taking the preparatory process that just needed when spinning process finishes originally during the spinning process.
Now introduce the spinning process of second winding method by Fig. 6 and 7.
Mainly being with the difference according to Fig. 1-5 embodiment, now is not reel for yarn 8 continuous inner diameter d from spinning pot 1 inwall 7
0Until tube in-core footpath d
eConstitute, but thread layers 9 corresponding with F conical wall 17 along spinning pot 1 with direction of arrow E during the reciprocating motion of yarn-guide tube 4 constitutes now.Therefore do not exist as according to from outside to inside reel for yarn 8 in Fig. 1-5 embodiment, but, wherein,, constantly occur inner diameter d now continuously each thread layers 9 according to the reel for yarn 8 that Fig. 6 and 7 another kinds constitute from bottom to top
0And d
eThe instantaneous inner diameter d of thread layers 9 for example shown in Figure 6
3
In this second winding method, continuously through speed curves 18, wherein, according to the instantaneous inner diameter d of thread layers 9, transient speed n is constantly at slow-speed of revolution n during the spinning process of foundation Fig. 7 for spinning pot 1
0With high rotation speed n
eBetween change.With rotation speed n
0Corresponding is the inner diameter d of spinning pot 1 inwall 7
0, with rotation speed n
eThat corresponding is an in-core footpath d
e
In this second winding method, also during spinning process, just take out reel for yarn 16 operation of getting ready from spinning pot 1 for the back.
Claims (4)
1. be used to take out the method for reel for yarn preparatory process, its thread layers is utilizing spinning tension to be stacked on the inwall of rotary spinning jar during the spinning process, wherein, the doff spindle is immersed in spinning pot and the reel for yarn, make doff spindle and spinning pot generation synchronous rotational speed and reduce rotating speed, and transfer on the doff spindle under the situation that reel for yarn is under centrifugal force fallen, it is characterized in that, during the spinning process-as considering that the back transfers to reel for yarn preparatory process on the doff spindle-just spinning tension is exerted one's influence, make doff spindle thread layers when taking out reel for yarn not bear the spinning tension that obviously differs from one another.
2. by the described method of claim 1, it is characterized in that the rotating speed of spinning pot changes during spinning process, make the centrifugal force that acts on thread layers at least near constant.
3. be used to implement device, have one and be connected the spinning pot (1) that to regulate on the rotary actuator (3), will treat that twisted yarn (5) is transported to spinning pot (1) inwall (7) to form reel for yarn (8 for one by claim 1 or 2 described methods; 16) yarn-guide tube (4) of thread layers (9), one in order to take out reel for yarn (8; 16) immerse in the spinning pot (1) and be connected the doff spindle (10) that to regulate on the rotary actuator (11) and be used for spinning pot (1) and the rotary actuator of doff spindle (10) (3,11) synchronized device (12), it is characterized in that, be rotary actuator (a 3) distribution speed regulator (13) of spinning pot (1), it improves the rotating speed (n) of spinning pot (1) along with the thread layers (9) and the increasing of spinning pot (1) inwall (7) distance.
4. by the described device of claim 3, it is characterized in that, adjust speed regulator (13), make the rotating speed (n) and thread layers (9) internal diameter (d of spinning pot (1)
1, d
2, d
3) product of root during spinning process at least near constant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410036891 DE102004036891A1 (en) | 2004-07-19 | 2004-07-19 | Removal of yarn ball formed by top spinning, with adjustment of spinning tension to inhibit displacement of yarn layers on subsequent transfer of yarn ball to doffing spindle |
| DE102004036891.0 | 2004-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1733994A true CN1733994A (en) | 2006-02-15 |
Family
ID=35668655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510092349 Pending CN1733994A (en) | 2004-07-19 | 2005-07-19 | Method for withdrawing yarn wheel in tophan pot spinning process |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1733994A (en) |
| DE (1) | DE102004036891A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080821A (en) * | 2019-06-14 | 2020-12-15 | 株式会社丰田自动织机 | Centrifugal spinning frame |
-
2004
- 2004-07-19 DE DE200410036891 patent/DE102004036891A1/en not_active Withdrawn
-
2005
- 2005-07-19 CN CN 200510092349 patent/CN1733994A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080821A (en) * | 2019-06-14 | 2020-12-15 | 株式会社丰田自动织机 | Centrifugal spinning frame |
| CN112080821B (en) * | 2019-06-14 | 2022-06-17 | 株式会社丰田自动织机 | Centrifugal spinning frame |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004036891A1 (en) | 2006-02-16 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |