CN101006213A - Fiber guiding duct for an open ended spinning device - Google Patents
Fiber guiding duct for an open ended spinning device Download PDFInfo
- Publication number
- CN101006213A CN101006213A CNA2005800280143A CN200580028014A CN101006213A CN 101006213 A CN101006213 A CN 101006213A CN A2005800280143 A CNA2005800280143 A CN A2005800280143A CN 200580028014 A CN200580028014 A CN 200580028014A CN 101006213 A CN101006213 A CN 101006213A
- Authority
- CN
- China
- Prior art keywords
- pipe insert
- guiding duct
- fiber guiding
- slide block
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 12
- 239000000835 fiber Substances 0.000 title claims description 95
- 238000000034 method Methods 0.000 claims description 34
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 238000004512 die casting Methods 0.000 claims description 18
- 238000001746 injection moulding Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000007383 open-end spinning Methods 0.000 claims description 9
- 230000002706 hydrostatic effect Effects 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 5
- 238000003825 pressing Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000012856 packing Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/38—Channels for feeding fibres to the yarn forming region
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to a fiber-guiding duct for an open-ended spinning device in order to pneumatically connect a sliver-dissolving device in an uninterrupted manner to a spinning rotor that revolves in a vacuum-impinged rotor housing at a great rotational speed. Said fiber-guiding duct is composed of at least one wear-resistant, tubular duct insert. According to the invention, an oversized duct insert (18A or 18B) is cast into an injection-molded or diecast component (12, 43), said duct insert (18A or 18B) obtaining its final dimensions only during the casting process by pressing the duct insert (18A or 18B) against at least one associated interior supporting slide.
Description
Technical field
The present invention relates to a kind of fiber guiding duct feature, that be used for open-end spinning device and a kind of method (claim 2) of producing such fiber guiding duct with claim 1 preamble.
Background technology
Fiber guiding duct is known with free-end spinning machine (for example free-end air-flow spinner) in various embodiments already, and in many documents this is described in detail.In this case, known single part fiber guiding duct and two element fiber guide pipes, two element fiber guide pipes for example are made up of fiber guiding duct entry element in the connecting hole that is fixed on the opening roller housing and the fiber guiding duct outlet element that is combined in tube sheet (duct plate) adapter.
Such two element fiber guide pipes have for example been described in DE 197 12 881 A1 or DE 195 11 084 A1.
In this case, to the design of fiber guiding duct (each fiber is transported to spinning rotor via this fiber guiding duct from the opening roller of open-end spinning device), especially geometry or the surface quality for inner surface has very high requirement.In other words, the flox condition in these fiber guiding ducts must guarantee that fiber keeps stretching or being stretched during carrying.And the surface of these elements must be smooth continuously, thereby can not stop any fiber during the pneumatic conveying of fiber.And avoided the destruction eddy current that can in the boundary layer region of fiber guiding duct, form.
The fiber guiding duct that uses in the practice is configured to die casting usually as described at DE 197 12 881 A1, perhaps made by steel plate, as described at DE 195 11 084 A1.
According to DE 195 11 084 A1, the fiber guiding duct entry element for example is designed to the cold-shaping steel plate for example made by deep draw (deep drawing), and this cold-shaping steel plate is fixed in the corresponding receiver hole of opening roller housing replaceably.In this case, this fibre guide tube elements by be placed on the fiber guiding duct periphery O-ring packing and with the opening roller housing seal.This well known elements seals with respect to tube sheet by hose coupling.Yet in practice, in the steel plate structure that constitutes like this and arrange, shown to produce sealing problem that this makes correct spinning operate in difficulty in fact more.
In DE 28 00 795 A1 or EP 0 825 282 B1, the fiber guiding duct of being made by steel plateelement has been described also.
In this case, DE 28 00 795 A1 have described the single part fiber guiding duct that also is cast directly in the opening roller housing.In the production of such fiber guiding duct, at first in first procedure of processing, make the pipe insert with steel plate.With for example liquid aluminium this prefabricated elements is cast in the compression mod around then, this compression mod preferably has and the corresponding interior shape of opening roller housing.Yet described production method does not also try out, because solve the problem that produces unsatisfactorily.For example, the verified pipe insert that is prefabricated into by steel plate usually since high pressure and in compression mod gross distortion.
Shown in EP 0 825 282 B1 and described the fibre guide tube portion in the tubesheet region of being arranged on outlet side.This fibre guide tube portion is configured to steel plateelement, and this steel plateelement is for example by hydrostatic forming production and be cast in the tube sheet of open-end spinning device or via being clamped and connected and removably be fastened on this tube sheet.Can not from this patent application, release about the many fine details how this steel plateelement is cast in the tube sheet.
For example in DE 197 12 881 A1 or EP 0 311 988 A1, the fiber guiding duct that is produced die casting has been described.
These die castings are preferably made of aluminum, yet they have such shortcoming, and promptly used material is not very wear-resisting, thereby during operation because the conveying of each fiber and produce higher relatively wearing and tearing at the fiber guiding duct place.
And, proposed by electro-plating method producd fibers guide pipe.In this method of describing in EP 0 275 516 A1, metal is deposited on the so-called bolster (bolster), the external dimensions of this bolster is corresponding with the internal geometry of fiber guiding duct.After making electrodeposited coating, thereby remove the fiber guiding duct that bolster obtains seamless-molding.Yet described method is very complicated and expensive, does not therefore also try out.
At last, known fiber guiding pipe fitting from DE 297 17 211 U1 and DE 196 03 730 A1, they are made of plastic material and are made for the injection moulding part.
According to DE 297 17 211 U1, the fibre guide tube portion on the entrance side for example is incorporated in the opening roller housing of being made by the Fibreglass Reinforced Plastics material.In this case, the opening roller housing is equipped with wear-resisting removable pipe insert, and this pipe insert for example is made of pottery or metal material.
DE 196 03 730 A1 have described a kind of so-called tube sheet adapter, have promptly proposed to form the interchangeable elements of the fibre guide tube portion on the oral-lateral.In this case, the pipe insert of being made by steel plate is combined in the injection moulding part of plastic material.
In this case, these productions by the element that plastic material and steel are made are problematic, because the plastic material that injects with high pressure or make the inner part gross distortion that is formed from steel, perhaps inner part is pressed on the support core forcefully, makes and under the situation of not damaging pipe insert inner surface, almost can't remove support core.Therefore, for open-end rotor spinning device, particularly for fiber guiding duct, said elements or known manufacture method fail in practice.
Summary of the invention
From above-mentioned prior art, the objective of the invention is to improve known fiber guiding duct, a kind of method has especially been proposed, this method can be produced wear-resisting mobile optimized fiber guiding duct economically.
According to the present invention, this purpose realizes by fiber guiding duct as claimed in claim 1 or the method that is used to produce such fiber guiding duct as claimed in claim 2.
The favourable structure of the method according to this invention is the theme of dependent claims.
Structure according to fiber guiding duct of the present invention has wear-resisting pipe insert, this pipe insert is at first made and is cast in injection moulding part or the die casting with oversized dimensions, and only, this pipe insert forming its final size in the process that at least one interior support slide block (supporting slide) casts by being pressed, the advantage of the structure of described fiber guiding duct is, not only can relatively economical ground such parts be produced and have point-device cooperation, even for more relatively number of spare parts, can guarantee that also the inner surface that contacts with fiber of described pipe insert has fabulous surface quality.
In this case, described interior support slide block is formed for the abutting part of preformed pipe insert in simple and reliable mode, and this pipe insert is only by forming relative profile final on its technology against this supporting slide block.In other words, accurately pre-determine the net section of the expectation of described pipe insert, specifically, the inwall of described pipe insert is carried out very soft processing by described interior support slide block.
In this case, the described method that is used for producing described fiber guiding duct of claim 2 comprises: at first make wear-resisting and excessive slightly tubular bulb insert in first process.Will this preformed excessive slightly pipe insert in second process insert and be lined with being injected in pattern or the compression mod of (line) at least one supporting slide block and (be inserted in the casting die in this case).With high pressure liquid cast material (be plastic material in injection moulding, be preferably aluminum or aluminum alloy in die casting) is fed in the mold then, and the interior profile that mildly makes described pipe insert in this process is against described supporting slide block.
In other words, described pipe insert only forms profile inside the Pass the phase final on its technology by casting, and this makes each fibre transportation optimization in described fiber guiding duct.Thereby not only supplying with to each fibre transportation and to fiber, the surface quality of can the method according to this invention producing of described fiber guiding duct has positive impact, and has such advantage, promptly, producd fibers guide pipe by this way when can substantially avoid substandard products, described positive impact can easily be seen by means of the improved yarn value that obtains by mechanism according to the present invention.
As described in claim 3 to 5, in described mold, use supporting slide block, the outline of this supporting slide block corresponds essentially to the clean interior profile of expectation of the fiber guiding duct of completion.Described supporting slide block also preferably constitutes two parts, and these two supporting slide block parts insert from opposition side and are made for the excessive slightly described pipe insert of size in advance.
Proved the foregoing description of supporting slide block and handled advantageous particularly, because it allows repeatedly to produce accurate in size fiber guiding duct, described fiber guiding duct is very smooth in the zone of fiber sliding surface.
As described in claim 6, in a preferred embodiment, at first finish described pipe insert by deep draw.In other words, described pipe insert inserts the described final form that it provides that in fact had when being injected in pattern or the compression mod at it.
In optional embodiment, can also produce preform and the excessive slightly pipe insert (claim 7) of size by hydrostatic forming.This manufacturing process is for example being described among DE 41 03 082 A1, and prove success for many years, particularly when combining with the production of complicated ducted body, this method can further be produced the oversize pipe insert with very smooth inwall economically.
In advantageous embodiment, described pipe insert has＜0.5mm, the oversized dimensions (claim 8) of preferred＜0.2mm.This size guarantees that on the one hand described supporting slide block can correctly be positioned in the described pipe insert and can the described inwall of described pipe insert do not caused damage, and guarantees to avoid when being pressed into aluminium steel plate folding of described pipe insert on the other hand.
As described in claim 9,, so also be favourable if described pipe insert is preferably made by the steel plate of preannealing.By this preannealing, can produce active influence to the structure of the material of described pipe insert, because during hydrostatic forming and press casting procedure, all guaranteed steel plate fully against profile or against described supporting slide block.
In order to ensure making the described pipe insert that is shaped on oversized dimensions in advance complete like this and up hill and dale against described supporting slide block, in advantageous embodiment, the operating pressure of described injection molding machine or die casting machine is at least 800 crust (claim 10) in press casting procedure.
Description of drawings
Below will the present invention be described in more detail by the embodiment shown in the accompanying drawing, in the accompanying drawing:
Fig. 1 represents the side view of the partly cut-away of open-end spinning device, and this open-end spinning device has the fiber guiding duct that is plugged between fiber band shredding mechanism and the rotor case;
Fig. 2 represents the layout of two element fiber guide pipes, and it has at the fibre guide tube portion on the entrance side and be combined in fibre guide tube portion in the tube sheet adapter on outlet side;
Fig. 3 represents according to the fibre guide tube portion on the entrance side of fiber guiding duct of the present invention with sectional view;
Fig. 4 represents according to the fibre guide tube portion on the entrance side of Fig. 3 with positive view;
Fig. 5 represents the stereogram according to the partly cut-away of the fibre guide tube portion on the outlet side of fiber guiding duct of the present invention.
The specific embodiment
Known is, the open-end rotor spinning device 1 shown in Fig. 1 has rotor case 2, and spinning rotor 3 is in this rotor case 2 high speeds rotation.In this case, spinning rotor 3 is bearing in the space of supporting disk support 5 by its armature spindle, and by regulate by pressure roller 7 tangentially the length along machine loads with 6.The rotor case 2 that self opens wide towards the place ahead is closed by the cover piece of installing 8 that can pivot during operation, and cover piece 8 has the tube sheet that comprises seal 9.Rotor case 2 also is connected on the vacuum source 11 by the suction tube 10 of correspondence, the essential spinning vacuum that vacuum source 11 produces in the rotor case 2.
In the reception opening that is not shown in further detail of tube sheet 37, be provided with preferred removable tube sheet extension, promptly so-called tube sheet adapter 12.Tube sheet adapter 12 has screw thread draw-off nozzle 13 and according to the mouth region of fiber guiding duct 14 of the present invention.Screw thread extraction tube 15 and screw thread draw-off nozzle 13 adjacency.Opening roller housing 17 is fixed on the cover piece 8, and cover piece 8 is installed into and can carries out the rotation of limited extent ground around pivotal pin 16.
Cover piece 8 has the rear support bracket 19,20 that is used to install opening roller 21 or fiber band feeding tube 22.In the embodiment shown, opening roller 21 tangentially is with 24 to drive by what rotate along machine length in the zone of its wharve 23, and fiber band feeding tube 22 is preferably driven by the worm-gear driven structure (not shown) that is connected on the driving shaft 25 of machine length.Significantly, also can adopt the single-motor driver that is used for opening roller 21 and/or fiber band feeding tube 22.Opening roller housing 17 has the emissions mouth 28 that is provided with along the rotation direction of opening roller 21 from the downstream of fiber band feeding tube 22 in lower region thereof.The dirt particle that discharges from fiber band is separated opening by this emissions mouth 28, and be transferred away by for example dirt processing mechanism.
Fig. 2 represents according to two element fiber guide pipes 14 of the present invention with side view.As shown in the figure, fiber guiding duct 14 pneumatically is connected to opening roller 21 on the spinning rotor 3 in a continuous manner.In this case, fiber guiding duct 14 has tube portion 31 on the entrance side and the tube portion 32 on the outlet side.Tube portion 31 on the entrance side comprises by steel plate and forms and be cast in pipe insert 18A in injection moulding body or the die casting body 43.The pipe insert 18B of the tube portion 32 on the outlet side is combined in the injection moulding body or die casting body that is configured to tube sheet adapter 12.
As shown in Figure 1, the tube portion 31 of the fiber guiding duct 14 on the entrance side is fixed in the hole (not shown) of opening roller 17, and in this case by be arranged on injection moulding body or the die casting body 43 fixed-site mechanism 34 and with accurate angle orientation.Also by the connecting hole sealing of O-ring packing and opening roller housing 17, this O-ring packing is positioned in the corresponding groove of injection moulding body or die casting body 43 fiber guiding duct 14.
As can be seen from Figure 3, injection moulding body or die casting body 43 have the recessed circular portion 48 that is suitable for opening roller 21.Fiber guiding duct 14 is by hose coupling 38 and with respect to tube sheet 37 sealings, and hose coupling 38 is clamped between the contact shoulder 41 on tube sheet 37 and the die casting body 43.
Fig. 3 and Fig. 4 represent according to the tube portion on the entrance side of fiber guiding duct 14 of the present invention 31 with sectional view or front cross sectional view.As shown in the figure, pipe insert 18A is cast in the injection moulding body or die casting body 43 that is made of plastic material or aluminum or aluminum alloy, and this pipe insert is preferably made by steel or steel alloy.In this case, can see all from Fig. 3 and Fig. 4 that pipe insert 18A is tapered conically along fibre transportation direction F, and preferably terminate in and cut and be in the circular exit opening 51.In other words, pipe insert 18A has about 3: 1 width/ratio in its entrance area, and is tapered towards relative mouth 51 from this.As shown in Figure 4, in this case, the wall of pipe insert 18A preferably extends with angle beta with respect to the central longitudinal axis 26 of fiber guiding duct 14.In the side view (Fig. 3) of fiber guiding duct 14, also provide similar situation.Here, the wall of pipe insert 18A extends with angle [alpha] with respect to the central longitudinal axis 26 of fiber guiding duct 14.This conical structure of pipe insert 18A not only has active influence to the flow process of the conveying air in the fibre guide tube portion 31, and help using the supporting slide block (not shown), this supporting slide block support column insert 18A reliably during injection moulding or die-casting process.
The operating process of the method according to this invention:
The blank of pipe insert 18A and 18B is for example made by deep draw by steel plate.These blanks that are configured to ducted body at first have with their net shape compares excessive slightly size.
Around the pipe insert of oversized dimensions it is cast in corresponding being injected in pattern or the compression mod with plastic material or aluminum or aluminum alloy then.Be injected in pattern or the compression mod at these, the pipe insert is supported by supporting slide block, the outline of this supporting slide block under each situation corresponding to profile in the relevant tube insert of fiber guiding duct final.In other words, being pushed down into the founding materials that is injected into pattern or compression mod at least 800 pressure that cling to makes initial excessive pipe insert against the supporting slide block that for example is configured to two parts.
In the production of tube sheet adapter 12, the core component of these two parts carry slide blocks is for example from inlet opening 35 inlet tube insert 18B, and the packing elements of supporting slide block is positioned at the pipe insert 18B from groove shape mouth 36 simultaneously.
After in being cast in injection moulding body or die casting body 12 or 43, the size that is provided not only is provided tube portion 31,32, and it is also very smooth to be directly connected to the interior profile of fibre transportation.In other words, guaranteeing not have fiber hangs on the inwall.
Claims (10)
1. fiber guiding duct that is used for open-end spinning device, this fiber guiding duct pneumatically is connected to fiber band shredding mechanism on the spinning rotor in a continuous manner, this spinning rotor rotates in the rotor case high speed that can load vacuum, wherein said fiber guiding duct comprises the pipe insert of the tubulose that at least one is wear-resisting, described fiber guiding duct is characterised in that, initially be made for oversize described pipe insert (18A or 18B) and be cast in injection moulding part or the die casting (12 or 43), wherein said pipe insert (18A or 18B) is only just forming its final size by described pipe insert (18A or 18B) is pressed in the process that at least one relevant interior support slide block casts.
2. method that is used to produce fiber guiding duct according to claim 1; the method is characterized in that; be injected in pattern or the compression mod initially being formed into oversize pipe insert insertion; the described described pipe insert that is injected in pattern or the compression mod is lined with at least one supporting slide block; and under high pressure founding materials is pressed into described being injected in pattern or the compression mod, makes the interior profile of described pipe insert against described supporting slide block.
3. method according to claim 2 is characterized in that, has used supporting slide block, and the outline of this supporting slide block corresponds essentially to the interior profile of the fiber guiding duct of completion.
4. method according to claim 3 is characterized in that, uses two parts carry slide blocks as described supporting slide block.
5. method according to claim 4 is characterized in that, two parts of described supporting slide block are introduced described pipe insert from opposition side.
6. method according to claim 2 is characterized in that, uses the ducted body of making by deep draw as described pipe insert.
7. method according to claim 2 is characterized in that, uses the ducted body of making by the hydrostatic pressure moulding as described pipe insert.
8. method according to claim 2 is characterized in that, described pipe insert initially is made for to have＜0.5mm, the oversized dimensions of preferred＜0.2mm.
9. according to each described method in the aforementioned claim, it is characterized in that described pipe insert is made by the steel plate of preannealing.
10. method according to claim 2 is characterized in that, described be injected in the pattern described pipe insert at least 800 the crust operating pressures under against described supporting slide block.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410040875 DE102004040875A1 (en) | 2004-08-24 | 2004-08-24 | Fiber guide channel for an open-end spinning device |
| DE102004040875.0 | 2004-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101006213A true CN101006213A (en) | 2007-07-25 |
Family
ID=34966262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800280143A Pending CN101006213A (en) | 2004-08-24 | 2005-04-22 | Fiber guiding duct for an open ended spinning device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1784530A1 (en) |
| CN (1) | CN101006213A (en) |
| DE (1) | DE102004040875A1 (en) |
| WO (1) | WO2006021241A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011010925A1 (en) * | 2011-02-11 | 2012-08-16 | Oerlikon Textile Gmbh & Co. Kg | Faserleitkanaleinrichtung for an open-end spinning device |
| DE102011102883A1 (en) * | 2011-05-31 | 2012-12-06 | Oerlikon Textile Gmbh & Co. Kg | Open-end spinning device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2800795A1 (en) * | 1978-01-09 | 1979-07-19 | Schlafhorst & Co W | FIBER FEED CHANNEL FOR A ROTOR SPINNING MACHINE |
| JPH0737047B2 (en) * | 1990-03-29 | 1995-04-26 | 東海ゴム工業株式会社 | Vulcanization molding equipment for rubber products with inner cylinder fittings |
| JP3468388B2 (en) * | 1995-05-19 | 2003-11-17 | 新日本石油化学株式会社 | Reinforced tubular laminate and method for producing the same |
| DE19603730A1 (en) * | 1996-02-02 | 1997-08-07 | Schlafhorst & Co W | Fibre guide plate and doffing tube adaptor for open end rotor spinning unit |
| DE19632888A1 (en) * | 1996-08-16 | 1998-02-19 | Rieter Ingolstadt Spinnerei | Open-end spinning device and method for producing a transport channel |
| DE29717211U1 (en) * | 1997-09-26 | 1997-11-13 | Legrom, Friedrich, 71540 Murrhardt | Fiber feed element of a rotor spinning machine |
| DE19742498A1 (en) * | 1997-09-26 | 1999-04-01 | Friedrich Legrom | Fiber feeding guide for rotary spinning machine used for textile manufacture |
-
2004
- 2004-08-24 DE DE200410040875 patent/DE102004040875A1/en not_active Withdrawn
-
2005
- 2005-04-22 WO PCT/EP2005/004368 patent/WO2006021241A1/en active Application Filing
- 2005-04-22 EP EP05738164A patent/EP1784530A1/en not_active Withdrawn
- 2005-04-22 CN CNA2005800280143A patent/CN101006213A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP1784530A1 (en) | 2007-05-16 |
| WO2006021241A1 (en) | 2006-03-02 |
| DE102004040875A1 (en) | 2006-03-02 |
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