CN1702208A - Pressure bar and spinning preparation machine with pressure bar - Google Patents
Pressure bar and spinning preparation machine with pressure bar Download PDFInfo
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- CN1702208A CN1702208A CN 200510076078 CN200510076078A CN1702208A CN 1702208 A CN1702208 A CN 1702208A CN 200510076078 CN200510076078 CN 200510076078 CN 200510076078 A CN200510076078 A CN 200510076078A CN 1702208 A CN1702208 A CN 1702208A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000009987 spinning Methods 0.000 title claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000002699 waste material Substances 0.000 claims abstract description 7
- 238000009960 carding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 230000032258 transport Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
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- 238000010521 absorption reaction Methods 0.000 description 3
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- 230000002349 favourable effect Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
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- 241001672694 Citrus reticulata Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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Abstract
It is proposed to use a pressure bar which, over the width of a drawing zone (HF) of a drawing frame (4), can be deflected between two nip lines of the drawing zone (4) to form a fiber binding sliver (FB'). The pressure bar is characterized in that at least one connecting device (29) for external compressed air or suction air is connected to the at least one connecting device (29) via at least one hollow section (30) and to the external environment via at least one opening (30) of the at least one hollow section in order to remove fiber waste and/or dirt in the region of the drawing zone (HF) by means of compressed air or suction air. It is also proposed to use a method for removing fibers and/or dirt from the drafting zone of a spinning preparation machine.
Description
Technical field
The present invention relates to a kind of pressure bar, a fiber web can be proofreaied and correct or turn to this pressure bar between two jaw lines of draw zone in the width range of a drafting system draw zone.In addition, the invention still further relates to the spinning preparation machine that has this pressure bar, and the method for from draw zone, removing fiber and dirt.
Background technology
When pressure bar particularly uses, be used for guiding so-called floating fiber on adjustable and uncontrollable drawing frame.Floating fiber short-term by in the drafting system course of conveying, by up roller to descending roller to the draw zone that constitutes in, neither can be by descending roller to clamping, also can be by up roller to clamping.In most of the cases, draw zone be by middle roller to the main drawing area of front roller to constituting.But also it is contemplated that by rear roller to a pressure bar being placed in the preliminary draft district that constitutes with middle roller.
But run into problem when the working pressure rod, particularly the upper surface at it has deposited some fiber and other particulates that branched away in conjunction with strip by fiber.Its reason is, derives from fiber skein and rests in the drafting system scope at main drawing area staple fibre and the dirt that comes that raise up, and major part drops on the pressure bar, even falls back on the fiber skein.Both of these case does not wish to take place, because at interval necessary at regular intervals on the one hand cleaning pressure rod, the result of dirt falling can damage the quality of drafted fiber skein on the other hand.According to the prior art level, suggestion utilizes the suction pipe that stretches to main drawing area from above to absorb as solution, because can reach bigger air mass flow and higher air velocity like this.But such result who reaches seldom can be satisfactory.
Summary of the invention
Task of the present invention is the problem that eliminating or the draw zone that reduces drafting system are at least stain.According to the present invention, above-mentioned task is that the feature by some independently claims solves.As pressure bar, in the width range of the draw zone of a drafting system, can turn to a fiber in conjunction with strip between the two jaw lines at draw zone, wherein, the jockey that has a connection external compression or suction air source at least, by at least one hollow section that is connected with at least one jockey, and, fiber waste-material and dirt are removed in the scope of draw zone (HF) so that utilize compressed air or suck air by at least one opening that at least one hollow section is connected with external environment condition.
Advantage of the present invention as can be seen particularly in, utilize pressure bar to influence the interior liquidity ratio of draw zone, take other measure (from top absorption) according to the present art in case of necessity, to reduce fiber and dirt are rested on the size and/or the quantity of the turbulent flow of draw zone, reduce to cause fiber and dirt to be deposited on the interior flow dead of draw zone, reach higher dirt and transport rate.According to two measures of the present invention, be to utilize pressure bar to add compressed air and suction air on the one hand, be the moulding of optimizing pressure bar on the other hand, can be used alternatingly, under the situation of having only a unique pressure bar, also can use together.
According to a first aspect of the invention, pressure bar has a jockey that connects the external compression air source or suck air source at least, whereby, perhaps fiber, dirt and the hot-air that will stay in the draw zone are in case of necessity excluded by the compressed air that from least one opening, flows out, perhaps they are sucked, and transport through a jockey by at least one opening.Wherein the first string is directly compressed air to be sent into main drawing area, and strengthens the air-flow that comes out from main drawing area.
According to a preferable enforcement pattern, have at least a hollow section to be designed to tubular wall extending therebetween in pressure bar.Preferably, on the next door of pressure bar, preset an opening simultaneously at least, in order to cavity and external environment condition are connected.Pressure bar thereby a kind of hollow section shapes is just arranged not only is very suitable for bearing known fiber control, and is very beneficial for being used for a fiber and dirt and transports.
As alternative scheme, on pressure bar,, a hollow lath (for example on the gummed) with hollow section function is installed for example in its longitudinal extension section, this lath has a jockey on the one hand at least, has an opening on the other hand at least.
According to the enforcement pattern of an excellence, its hollow section is in the section configuration that a kind of variation is vertically arranged.Whereby, can be compensated, particularly increase gradually along with the distance of leaving jockey and when attenuating when the section configuration of hollow section along with the pressure that occurs under certain condition away from jockey gradually descends.
Additional or alternative design respectively is provided with a jockey on two end faces of its pressure bar according to another, uses compressed air and sucks air through these two jockeys respectively.
On pressure bar according to the present invention, can design a plurality of hollow section and replace a unique hollow section, hollow section can be for example from the end face of pressure bar to the middle part, and with one intermediate bulkheads they are separated mutually in the centre.
In view of having an opening at least, opening can preferentially design conglobate, polygonal or microscler (slit-shaped openings).In addition, a plurality of adjacent openings preferentially are distributed in the width range of draw zone basically, so that remove fiber and dirt as far as possible effectively.If adopt one or more gap openings, same principle also suits to follow.
At least one opening is paid the utmost attention to the draw zone orientation with respect to the needs cleaning, guarantee fiber and dirt are carried out the best removing.In a flexible program, at least one opening upwards (in other words, leaving fiber skein) is directed.In another flexible program, at least one opening is directed facing to descending top roller (front roller on main drawing area is), thereby can raise up and transport the free-fiber that produces near in wedge place and the wedge.
Also can predesignate default two parallel longitudinal slot openings, gap opening also can interrupt, perhaps default a plurality of openings are lined up two row or multiple rows, and wherein a row opening can face toward described roller orientation, the direction orientation that another row gap opening then goes to leave fiber skein.Perhaps a row opening is oriented in the wedge of two front rollers formations, and another row opening is facing to last front roller.Also can predesignate, two row or multiple row slit or opening are by constituting at the some slits or the opening that vertically are staggeredly arranged.
A kind of preferable design according to the present invention, at least two openings have different cross sectional dimensions, in the hope of realize the optimal flow ratio in draw zone.Particularly, if the cross sectional dimensions that several openings at least arranged has confirmed that according to a kind of pattern of implementing that relates to these characteristics this is favourable from the work that the end face of pressure bar successively decreases successively to the pressure bar middle part.According to a corresponding design, (under the situation that adopts circular open successively) centre from the outer surface to the pressure bar, the diameter of open cross-section is followed successively by 4mm, 3.5mm, 3mm, 2.5mm, or the like.
In addition, if having at least several openings a chamfering or rounding to be arranged, then be favourable at its outlet side, because can realize uniform air-distribution at draw zone like this, and can avoid occurring the dead band effectively.
In a preferred configuration according to the pressure bar of root invention, having several openings at least is centroclinal towards pressure bar from inside to outside.And verified, by this measure, draw zone can obtain more uniform air-distribution.
Useful is, at least can adjust the orientation of an opening with respect to drafting system, so that physical dimension (for example two right straight lines of roller are adjusted length between vices) according to drafting system, stretch and draw type of material, rate of delivery, and the liquidity ratio in the relevant therewith draw zone, the coating of top roller and/or other parameter are carried out a suboptimization orientation.For this purpose, pressure bar can use bearing material at its end face, rotates so that can be bearing on the drafting system.
In addition, at least one opening is preferably 0 ° to 90 ° to the air-supply angle α of horizontal plane, and wherein angle α should open facing to descending roller.In the time of 0 °, in the wedge of front roller, blow, facing to last front roller air-supply, upwards blow in the time of 90 ° and blow between supreme middle roller and the last front roller in the time of 45 °.
As indicated above, pressure bar also can have a suction opening at least, and this opening is connected surrounding environment and hollow section.Like this, fiber and dirt can by on the pressure bar and the hollow section in the pressure bar get rid of, but be noted that at least one opening, at least one hollow section and at least one jockey must not stop up.At least one suction opening preferably can be directed on the fiber web of drafting system.Under the situation of a plurality of suction openings, suction opening can be at the zones of different interior orientation of draw zone.
In another specific design, pressure bar adopts the mode of water jet pump to work.During work, when at least one hollow section is carried out the compressed air loading.Air and fiber can suck by the air-breathing opening of on the pressure bar or in the pressure bar at least one, and can be discharged into the external environment condition from draw zone by at least one exhaust port on the pressure bar or in the pressure bar and remove.
According to a second aspect of the invention, pressure bar is characterised in that to have a kind of section configuration, this section configuration can influence the liquidity ratio in the draw zone, makes the quantity and/or relative the reducing of size (comparing with the known pressure rod) of the flow dead between the draw zone top roller.By the pressure bar of this shape, can reach the purpose that improves air velocity through optimizing.Turbulent flow position in the draw zone may be shifted, and perhaps may partly thoroughly avoid the formation of turbulent flow.The flow velocity of the air that will take away dirt from draw zone may be improved, thereby or improves the effect of removing.
In the embodiment of a crosssection shape design through optimization, pressure bar has one along its longitudinally extending surface, matches with the aspectant circumferential surface of adjacent descending top roller in this surface.Wherein, particularly the surface of described pressure bar is imitated according to the part drum surface of top roller basically.
To have the pressure bar of optimizing section configuration another surface of designing in order contacting with fiber web can also to be arranged, this surface is made of a plane basically, can be parallel to fibroreticulate the trend and arrange.
As the replacement scheme of described feature or replenish, the cross section of described preferable pressure bar along down direction (being the direction of travel of fiber skein) be tapered to.
In a preferable flexible program, the lower surface of pressure bar has a recessed arc curve.Simultaneously, lower surface narrows down gradually along descending pointed edge, points to the wedge of two descending rollers of draw zone.The advantage of recessed arc curve is, up edge guides fiber in conjunction with strip in the conventional mode, but aduncate part does not contact in conjunction with strip with fiber, therefore can not produce interference, and descending edge works to optimize liquidity ratio between pressure bar and last front roller, to the almost not influence of drawing-off state of fiber skein.
In order further to improve the flow condition of draw zone, pressure bar does not have or does not almost pass through the edge of rounding at it on the upper surface of fiber skein, so that reduce the dead band in this scope.
The cross section of described various pressure bars each cross section in its length range is preferably identical.But do not get rid of the cross section that slightly changes yet.
The present invention also comprises a kind of spinning preparation machine, particularly a kind of drawing frame, combing machine, combing preparation machine or carding machine, and is furnished with drafting system, this drafting system has at least one to constitute two draw zones that roller is right, and machine has a pressure bar that is arranged in the draw zone according to the invention at least simultaneously.
Have the further design of superiority according to the present invention, machine has a kind of device, is used for regulating the degree that compressed air loads, so that can regulate the removing to fiber and dirt more accurately.Simultaneously, the degree of compressed air loading can adapt with the speed of producing and/or the dirty degree of machined material.
According to another preferable Machinery Design, pressure bar arranges with respect to middle roller that at main drawing area it can move thereupon when the draw zone wide variety under situation about keeping the middle roller same distance.In this case, pressure bar can be connected with the stand-off of for example going up middle roller.
In addition, when presetting a suction apparatus above draw zone, suction apparatus assists to transport fiber waste-material and/or the dirt that produces at draw zone, and fiber waste-material and/or dirt utilize pressure bar of the present invention to raise up and be transported to the direction of suction apparatus.
Object of the present invention also is simultaneously to utilize the pressure bar of the invention described above from the draw zone removing fiber of drafting system and/or the method for dirt.
The preferable further design of the present invention has the described feature of every claim.
Description of drawings
Below, the invention will be further described with reference to the accompanying drawings.Among the figure:
Fig. 1 represents the side view (not having regulator) of a drawing frame with schematic diagram;
Flow simulating figure when Fig. 2 represents to adopt a circular cross-section pressure bar with side view;
Flow simulating figure when Fig. 3 is traditional pressure bar;
Flow simulating figure when Fig. 4 optimizes the pressure bar of shape of cross section for using employing of the present invention;
Fig. 5 implements the flow simulating figure of pattern for using the another kind of optimizing the shape of cross section pressure bar;
Fig. 6 is according to the drafting system of Fig. 1 diagrammatic side view when pressure bar loads with compressed air;
Fig. 7 is the vertical view according to the drafting system of Fig. 6;
Fig. 8 is the pressure bar after amplifying according to Fig. 7;
Fig. 9 is another enforcement pattern with pressure bar of air-breathing and exhaust port;
The flow simulating figure of Figure 10 during for the pressure bar that adopts non-compressed air and load;
The same Figure 10 of Figure 11, but have compressed air to load;
Figure 12 is the cross-sectional view of Figure 11;
The same Figure 12 of Figure 13, but its pressure bar can rotate around the longitudinal axis;
Figure 14 is that the another kind when adopting the pressure bar that the compressed air loading is arranged is implemented pattern;
Figure 15 a)-f) for having the different pressures rod that compressed air loads, represents with side view and front view respectively; And
Figure 16 represents with front view and another embodiment of the pressure bar seen from end face.
The specific embodiment
Shown in Figure 1 is the diagrammatic side view of a drawing frame, and this drawing frame is as shown in the embodiment of spinning preparing machine (the more definite here spinning preparation machine of saying so).According to this example, many untwisted basically fiber skein FB (having only these fiber skein to make in front here) are arranged and be emitted on the front of drawing frame.Also might only introduce a fiber skein FB, this fiber skein FB is placed directly in the front of preposition carding machine or combing machine to drawing frame.Have a head of the trumpet 12 to be arranged in the porch of drawing frame, it is with the fiber skein compacting.Scheme also can be used other compaction apparatus as an alternative.Pass a scanning means 2,3, it constitutes drawing frame core component drafting system 4 to the conpressed fibers strip FB ' introducing of being made up of many single fiber skein FB as a part of charging detector.Drafting system generally has three drafters or roller right, two rollers between carry out drawing-off.They be rear roller to 5a, 5b, middle roller to 6a, 6b and output or front roller to 7a, 7b.They rotate with the peripheral speed that improves gradually in this order.Because the right peripheral speed of roller do not wait, the fiber skein FB ' that is processed to fibrous web-like in drafting system is stretched according to the corresponding proportion of peripheral speed.Rear roller constitutes so-called preliminary draft district VF to 5a, 5b and middle roller to 6a, 6b, and middle roller constitutes so-called main drawing area HF to 6a, 6b and front roller to 7a, 7b.
In addition, arranged a pressure bar 20 in main drawing area, pressure bar is used for making fiber skein FB ' to proofread and correct or turns to, and carries out fibre guide better, particularly for be not sandwiched in two rollers between fiber (so-called floating fiber).The fiber skein FB ' that is stretched is by means of turning to top roller 9 and become strip device 10 to join, and through pressure roller to 13,14 be arranged in fiber skein passage 16 in the rotating disk 17 that rotates with angular velocity omega with v
LSpeed be placed in the bar tube 18.
Fig. 2 with Figure 3 shows that main drawing area HF in two different computer flow simulating figure, wherein, Fig. 2 shows the pressure bar 20 of a circular cross section.Show among the figure that (German: Todzone), that is to say almost do not have streamline to exist, dirt particles can be deposited on the pressure bar 20 to have formed a dead band before pressure bar 20.Under the situation that adopts the normal pressure rod 20 with oval cross section shown in Figure 3, though also there is such dead band to occur, distinct much less, because go up space between middle roller 6b and the pressure bar 20 2mm that only has an appointment.
According to simulation drawing as can be seen, the cross sectional shape of pressure bar 20 has a significant impact the formation of air turbulence (closed line).By the shape of improving pressure bar 20 position of turbulent flow is shifted, perhaps partly avoids the formation of turbulent flow.The pressure bar of adopt optimizing also can improve the flow velocity of the air of dirt being taken away from draw zone, thereby also can improve the efficient of removing contamination.
When adopting Fig. 4 and pressure bar 20 of the present invention shown in Figure 5, the circular camber line (see figure 3) on oval normal pressure rod top is replaced by the edge line 21 of the pressure bar limit wall of the vertical mutual butt joint of twice.Shown in flow simulating figure, original in this case dead band of causing almost all disappears.
Be in the one side in downstream at pressure bar 20, turbulent flow appears near the fiber skein FB '.Employing such turbulent flow (German: Wirbel sees the mark among Fig. 4) all occurs during according to Fig. 2, all three kinds of pressure bars of 3 and 4.According to the present invention, the remedial measure of taking is, the lower surface 22 of the pressure bar shown in Fig. 5 20 extended to the wedge Z that constitutes near by two roller 7a, 7b, and hospitalizing with wedge Z opposed edges line 26 places, with edge line 26 roundings, and be bent upwards slightly.Utilize such shape-designing can limit turbulent flow on the fiber skein FB ' effectively, thereby can take away the dirt that discharges at main drawing area from wedge district and main drawing area HF by refluxing.This effect will could realize that this surface play the guiding role for fiber that comes from main drawing area and dirt by the surface 24 adjacent with top roller 7b that is elongated equally.
All load at all pressure bars 20 shown in Fig. 6-15 with compressed air.Pressure bar 20 shown in Fig. 6 figure 8 illustrates detail drawing, and is the same with traditional pressure bar (see figure 3), and its hollow section 30 has an oval external cross section, and in pressure bar inside, hollow section is stretched over its whole length range.According to the present invention,, be designed to gap opening according to this opening of Fig. 7 at the default opening 40 of the upper surface of pressure bar 20.
In addition, as can be seen, two end faces of pressure bar 20 are provided with a jockey 29, are respectively connecting a compressed air source 90 on each jockey from the vertical view of Fig. 7.Can adjust the intensity (for simplicity, not being shown being connected between this device 91 and another compressed air source) of compressed air stream through a device 91 of representing with schematic diagram.Two jockeys 29 also can only use a unique compressed air source 90.In addition, also can only on the end face of pressure bar 20, preset a jockey 29.
The compressed air of compressed air source 90 enters hollow section 30 through jockey 29, and is entered the periphery of main drawing area HF through opening 40 by hollow section.At this place, compressed air is the upwards pulling of fiber, dirt and heat in main drawing area.
Arranged a traditional absorption device 80 on the top of drafting system 4, by this device the fiber in the drafting system scope, dirt and heat have been siphoned away and (see arrow f
1).Moulding according to pressure bar 20 of the present invention can impel fiber, dirt and heat to flow to absorption device 80 effectively.
In an enforcement pattern according to Fig. 9, preset another opening 50, it makes pressure bar have the function of similar water jet pump.Compressed air is imported into hollow section 30 when using pressure bar shown in Figure 8, outwards derives through opening 40 then.The structure of hollow section 30 can guarantee that air is sucked through opening 50 by zone line, upwards leaves pressure bar 20 again through opening 40 then.
Flow simulating result when being to use open circles pressure bar 20 shown in Figure 10 and 11, wherein, compressed air is sucked main drawing area HF vertically upward, the compressed air among Figure 10 is turned off then, among Figure 11 by open-minded.As can be seen from Figure 10, similar with the situation of Fig. 2, around pressure bar 20, formed several turbulent flows and dead band.When not having air to enter, between last centre and last front roller 6b, 7b, also formed a dead band (Todzone) (seeing mark), this is owing to the cleaning rod 60 (being used to clean the clad of top roller) that uses generally speaking impels and causes.The particle of separating out from fiber skein FB ' rests in this dead band, and is deposited on the cleaning rod 60.It is pointed out that experimental study and simulation are not arrange (though this device is generally all arranged) of carrying out under the situation of absorbing device on drafting system top on drawing frame.Therefore, problem is at least in order to get rid of the dead band that produces under the situation that does not have air inlet between the cleaning rod, whether resorption is abundant.
On the contrary, how described as can be seen dead band is excluded in Figure 11, because the air velocity between last middle roller and last front roller 6b, the 7b in the gap obviously increases, enter feeding and the airflow flowing that makes progress in fiber and dust particle then separated with higher probability.This situation is shown in the detail drawing of Figure 12.
The airintake direction that enters main drawing area HF tilts, and as shown in figure 13, like this, the boundary layer of last front roller 7b directly becomes a mandarin and also can improve the separation of dirt, because air-flow can be collected more particle.Should be noted in the discussion above that in this case by changing air inlet angle, do not produce new dead band as far as possible, avoid dirt may deposit on the pressure bar 20.
Can clearly be seen that from Figure 11 to 13 when air entered main drawing area HF, pressure bar 20 and cleaning rod 60 all were clean.If air enters main drawing area HF through hollow pressure bar 20, then can not form the dead band.Particle is taken away by air-flow.The cleaning rod 60 (seeing Figure 11) of last middle roller 6b, is not had particle and deposits around purge by air ring, and drafting system keeps clean.Such air flow condition helps absorbing the System Cleaning dirt with drafting system.
Shown in the flow simulating result among Fig. 2-5 and Figure 10-13, not only pass through the geometry design of pressure bar 20, and utilize pressure bar 20 to enter main drawing area HF by air, can improve air and flow.Pressure bar 20 according to the viewpoint optimization of flow technique is avoided forming the dead band as far as possible in whole flow region.Figure 14 shows that a kind of corresponding possible pressure bar embodiment.The elongated shape of pressure bar 20, the particularly lower surface of its length can reduce directly to form turbulent flow on fibrous material.The outflow direction of pressure air tilts, and direction is facing to last front roller 7b.In addition, the surface 24 adjacent with last front roller 7b is complementary with its cross section of part circular basically.Therefore produce a kind of windstream that helps separate particles generally.Air enters main drawing area HF and improves approach stream velocity, and improve proton with kinetic force.Thereby avoid forming the dead band at the position that particle may deposit.
Shown in Figure 15 for the varying cross-section of pressure bar 20 of the present invention and corresponding front view.The position of pressure bar 20 is with identical shown in the prior figures.Enforcement pattern among Fig. 15 a), c), e) and f), air (representing with arrow) enters main drawing area HF with a flow inlet angle α (with respect to the horizontal plane being 45 ° here) by several openings side by side.Flow through front roller 7b after entering especially.Implementing pattern b) in, flow inlet angle is 90 °, and is implementing pattern d) in, the air inlet of horizontal plane orientation is to realize by a plurality of openings arranged side by side 41 in addition.
Have only and implement pattern and opening 4 has been shown in a) and has different designs.Seven circular opens arranged side by side 40 are arranged in the diagram of on the left side, three long slits 40 are then arranged in the diagram on the right.Certainly, also can only establish a long opening (see figure 7).For simplicity, these replacement schemes that can Gong select for use are at the enforcement pattern b of Figure 15)-do not illustrate in f).
Implement pattern a) in, top edge is a rounding, and is implementing pattern b)-still keep acute angle in f), as mentioned above, this is favourable on flow technique.
In addition, according to implementing pattern c), d) and the lower surface of pressure bar f) a recessed arc curve 23 is arranged, it preferably is stretched in the whole length range of pressure bar 20.(should be noted that as if the pressure bar shown in all figure all has identical cross section in its whole length range).On the contrary, according to e) 20 of pressure bars the lower surface 22 of level trend is arranged.The advantage of arc curve 23 is, can obtain long pressure bar shape on the one hand, will reach so preferably the flow section shape this in the advantage of being discussed in conjunction with the enforcement pattern of Fig. 5.Can accomplish also that on the other hand original main drawing area can not shorten because a recessed arc curve 23 is arranged, because may bring other shortcoming on the textile technology like that.Pressure bar 20 followed the function of getting off originally and was accepted by the upstream edge 25 on the lower surface 22 of pressure bar 20.26 of following right hand edges are used for constituting the cross sectional shape of the pressure bar 20 of the wedge that points to front roller 7a, 7b.
Figure 16 illustrates the longitudinal section of implementing pattern according to the another kind of pressure bar 20 of the present invention, the same with Figure 15, for simplicity, do not provide jockey.A plurality of openings are arranged on the surface thereon, and its cross-sectional area terminal point to pressure bar more is more little.In addition, opening has the inclination angle of tending to the pressure bar centre from inside to outside.As another characteristics, opening 40 side of giving vent to anger of (towards draw zone) outwardly has a chamfering 44.Above-mentioned measure has at draw zone and realizes the uniform air-distribution advantage of (air-flow is represented with arrow), thereby can avoid the dead band effectively, and proof can be improved fiber and other particle and hot-air and discharges from draw zone.Above-mentioned measure according to the enforcement pattern of Figure 16 also can realize on a single pressure bar according to the present invention.The cross section of the pressure bar 20 of Figure 16 can adopt different designs according to embodiment different among the figure mentioned above.
In the pressure bar shown in the different figure 20 can concentrate on according to a kind of spinning preparation machine of the present invention (at preliminary draft district or main drawing area), but also can be used as single part,, constitute a part of the present invention particularly as spare part.
Claims (32)
1. in the width range of the draw zone (HF) of a drafting system (4), can turn to the pressure bar of a fiber between the two jaw lines at draw zone (FB ') in conjunction with strip (FB '), it is characterized in that, the jockey (29) that has a connection external compression or suction air source (90) at least, by at least one hollow section (30) that is connected with at least one jockey (29), and, fiber waste-material and dirt are removed in the scope of draw zone (HF) so that utilize compressed air or suck air by at least one opening (40) that at least one hollow section (30) is connected with external environment condition.
2. pressure bar according to claim 1 is characterized in that, at least one hollow section (30) is designed to longitudinally extending cavity in pressure bar (20).
3. pressure bar according to claim 1 and 2 is characterized in that, is provided with an opening (40) on the wall of pressure bar (20) at least, and hollow section (30) is linked to each other with external environment condition.
4. pressure bar according to claim 3 is characterized in that, hollow section (30) cross sectional shape is along vertical variation of pressure bar (20).
5. pressure bar according to claim 4 is characterized in that, the cross sectional shape of hollow section (30) is along with from the increase of the distance of jockey (90) and attenuate.
6. according at least one described pressure bar of claim in above-mentioned all the claim, it is characterized in that, on two end face, respectively establish a jockey (90), can use compressed air through these two jockeys respectively.
7. according at least one described pressure bar of claim in above-mentioned all the claim, it is characterized in that opening (40) can be designed conglobate, polygonal or microscler (slot-shaped).
8. according at least one described pressure bar of claim in above-mentioned all the claim, it is characterized in that a plurality of adjacent openings (40) are arranged in the width range of draw zone (HF) basically.
9. according at least one described pressure bar of claim in above-mentioned all the claim, it is characterized in that, have at least two openings (40) to have different cross-sectional areas.
10. according at least one described pressure bar of claim in above-mentioned all the claim, it is characterized in that the centre of the cross-sectional area that has several openings (40) at least from the end face of pressure bar to pressure bar diminishes gradually.
11. according at least one described pressure bar of claim in above-mentioned all the claim, it is characterized in that, have at least several openings (40) chamfering (44) or rounded to be arranged in the side of giving vent to anger.
12., it is characterized in that having several openings at least according at least one described pressure bar of claim in above-mentioned all the claim from inside to outside towards the intermediate, inclined of pressure bar.
13. pressure bar according to claim 7 is characterized in that, stretch in the whole width range of draw zone (HF) slit (40).
14., it is characterized in that having an opening (40) at least is adjustable according at least one described pressure bar of claim in above-mentioned all the claim on the orientation with respect to drafting system (4).
15., it is characterized in that at least one opening (40) flow inlet angle (α) of horizontal plane relatively is 0 ° to 90 ° according at least one described pressure bar of claim in above-mentioned all the claim, wherein angle (α) opens descending roller (7b).
16. according at least one described pressure bar of claim in above-mentioned all the claim, it is characterized in that pressure bar has a suction opening (50) at least, this opening is connected external environment condition with hollow section (30).
17. pressure bar according to claim 16 is characterized in that, when compressed air loaded, air and fiber can suck by at least one air-breathing opening (50), and can be discharged in the surrounding environment again by at least one exhaust port (40) and go.
18. pressure bar, particularly according to the described pressure bar of one of above-mentioned all claim, in the width range of the draw zone (HF) of a drafting system (4), can turn to a fiber skein (FB ') between the two jaw lines at draw zone (HF), it is characterized in that having a kind of cross sectional shape, can influence the interior liquidity ratio of draw zone (HF), thus can reduce between the top roller (6b, 7b) of draw zone (HF) and (perhaps) on the quantity and the size of flow dead.
19. pressure bar according to claim 18, it is characterized in that, have a surface (24) along the longitudinal extension of pressure bar (22) at least, this surface has the moulding that the circumferential surface of the adjacent top roller of (7a, 7b) is complementary with the descending roller of draw zone (HF).
20. according to claim 18 or 19 described pressure bars, it is characterized in that the surface (22) that has one to establish in order to contact with fiber web (FB '), this surface is the plane basically, can be parallel to fiber web (FB ') move towards arrange.
21., it is characterized in that its cross section is designed to along down direction tapered according at least one described pressure bar of claim in the claim 18 to 20.
22., it is characterized in that the descending edge (26) of its lower surface (22) connects with the wedge (Z) that is made of two descending rollers (7a, 7b) of draw zone (HF) according at least one described pressure bar of claim in the claim 18 to 21.
23., it is characterized in that its lower surface has a recessed arc curve (23) according at least one described pressure bar of claim in the claim 18,19,21 or 22.
24., it is characterized in that avoiding on the upper surface of fiber in conjunction with strip (FB ') of it, edge (21) are not rounding or rounding hardly according at least one described pressure bar of claim in the claim 18 to 23.
25., it is characterized in that in whole length range, cross-sectional area equates according at least one described pressure bar of claim in above-mentioned all the claim.
26. spinning preparation machine, particularly drawing frame, combing machine or carding machine are furnished with a drafting system (4), this drafting system have at least one by two rollers to (6a, 6b; 7a, 7b) draw zone (HF) that constitutes, it is characterized in that, in draw zone (HF), arrange a pressure bar (20) that meets one of above-mentioned all claim at least.
27., it is characterized in that having a device (91) to be used for adjusting the intensity that compressed air loads according to 26 described machines in the claim.
28., it is characterized in that the intensity that compressed air loads can adapt with the speed of producing and/or the pollution level of machined material according to 27 described machines in the claim.
29. according at least one described machine of claim in the claim 26 to 28, it is characterized in that, pressure bar (20) is to arrange like this in main drawing area (HF), promptly when the width of draw zone changes, under the equidistant situation that is retained to middle roller (6a, 6b), pressure bar together moves.
30., it is characterized in that according at least one described machine of claim in the claim 26 to 29, above draw zone, absorb device (80) for default one, be used for absorbing fiber waste-material and/or the dirt that in draw zone (HF), generates.
31. spinning preparation machine, particularly drawing frame, combing machine or carding machine, comprising a drafting system (4), this drafting system have at least one by two rollers to (6a, 6b; 7a, 7b) draw zone (HF) that constitutes, get rid of the method for fiber and/or dirt in such draw zone, it is characterized in that, air is sent into draw zone (HF), in the scope of draw zone (HF), obtain and take away fiber waste-material and/or dirt.
32. method according to claim 31, it is characterized in that, pressure bar (20) according to one of above-mentioned all claim is arranged in the draw zone (HF), by at least one opening (40) on the pressure bar (20) compressed air is imported in the draw zone (HF).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004026758 | 2004-05-29 | ||
| DE102004026758.8 | 2004-05-29 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110330319.7A Division CN102443888B (en) | 2004-05-29 | 2005-05-30 | Pressure bar and spinning preparation machine with pressure bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1702208A true CN1702208A (en) | 2005-11-30 |
| CN1702208B CN1702208B (en) | 2012-01-04 |
Family
ID=35632162
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110330319.7A Expired - Fee Related CN102443888B (en) | 2004-05-29 | 2005-05-30 | Pressure bar and spinning preparation machine with pressure bar |
| CN 200510076078 Expired - Fee Related CN1702208B (en) | 2004-05-29 | 2005-05-30 | Pressure bar and spinning preparation machine with pressure bar |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110330319.7A Expired - Fee Related CN102443888B (en) | 2004-05-29 | 2005-05-30 | Pressure bar and spinning preparation machine with pressure bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN102443888B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911756A (en) * | 2015-06-09 | 2015-09-16 | 安徽华茂纺织股份有限公司 | Fore-trench rear-wheel type spinning back-drafting-zone pressure bar |
| CN110172760A (en) * | 2019-03-08 | 2019-08-27 | 东华大学 | A kind of combing Yarn spinning method with comb process in parallel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116163038B (en) * | 2023-03-27 | 2023-07-25 | 无锡万诺智能科技有限公司 | Aggregation spinning device and spinning method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304584A (en) * | 1964-10-07 | 1967-02-21 | Maremont Corp | Drafting mechanism |
| DE3016409A1 (en) * | 1980-04-29 | 1981-11-05 | W. Schlafhorst & Co, 4050 Mönchengladbach | Sliver drafting system - has suction channel in main draft zone to extract dust and short fibres |
| CN85201569U (en) * | 1985-05-13 | 1986-11-26 | 江苏省纺织研究所 | Pressure stick pulling device with combined pressing for cotton drawing frame |
| CN87208807U (en) * | 1987-06-04 | 1988-04-06 | 中国纺机总公司设计研究所 | Dustproof pressure bar |
| CN2075661U (en) * | 1989-02-21 | 1991-04-24 | 葛估兴 | Radius curve pressure stick of drawing frame graduated curvature |
| CN2070303U (en) * | 1990-06-09 | 1991-01-30 | 陈乃族 | Drawing frame |
| CN2139942Y (en) * | 1992-10-23 | 1993-08-11 | 柳志强 | Pressure stick |
| DE4242722A1 (en) * | 1992-12-17 | 1994-06-23 | Rieter Ingolstadt Spinnerei | Pressure rod |
| DE50101978D1 (en) * | 2000-11-28 | 2004-05-19 | Truetzschler Gmbh & Co Kg | Method and device on a spinning machine for drawing a textile fiber structure, e.g. made of cotton, chemical fibers and. like. |
-
2005
- 2005-05-30 CN CN201110330319.7A patent/CN102443888B/en not_active Expired - Fee Related
- 2005-05-30 CN CN 200510076078 patent/CN1702208B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911756A (en) * | 2015-06-09 | 2015-09-16 | 安徽华茂纺织股份有限公司 | Fore-trench rear-wheel type spinning back-drafting-zone pressure bar |
| CN110172760A (en) * | 2019-03-08 | 2019-08-27 | 东华大学 | A kind of combing Yarn spinning method with comb process in parallel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102443888A (en) | 2012-05-09 |
| CN102443888B (en) | 2015-06-10 |
| CN1702208B (en) | 2012-01-04 |
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