EP2635729A1 - Vliesbandleger und verfahren zum bilden eines vlieses - Google Patents
Vliesbandleger und verfahren zum bilden eines vliesesInfo
- Publication number
- EP2635729A1 EP2635729A1 EP11760769.7A EP11760769A EP2635729A1 EP 2635729 A1 EP2635729 A1 EP 2635729A1 EP 11760769 A EP11760769 A EP 11760769A EP 2635729 A1 EP2635729 A1 EP 2635729A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laying
- pile
- belt
- nonwoven
- counter
- 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.)
- Granted
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 9
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000000151 deposition Methods 0.000 claims abstract description 5
- 238000000605 extraction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G25/00—Lap-forming devices not integral with machines specified above
Definitions
- the invention relates to a nonwoven stripper according to the preamble of the device claim, or a method for forming a nonwoven fabric.
- EP 1 870 499 B1 and EP 0 865 521 B1 disclose the basic construction of a nonwoven strip layer.
- a nonwoven strip layer consists of an endlessly running infeed strip on which the pile to be laid is transported into the file.
- This infeed belt is additionally associated with a pile covering the pile, which runs in opposite directions and at the same rotational speed to the inlet belt. Between infeed belt and the shroud, the pile is kept out.
- a in the transport direction of the supplied pile movably mounted and periodic movements exporting superstructure has guide rollers for the cover and the infeed belt.
- the first held between inlet and shroud pile is now transferred to a counter-belt and kept following between counter and inlet belt.
- the counter-belt runs at the same speed as the infeed belt and is likewise deflected by a deflection roller arranged in the superstructure.
- the pile is conveyed to a movably mounted laying carriage, which has deflection rollers (laying rollers) for the two belts.
- the two parallel laying rollers for the infeed and the counterbelt form a delivery point (laying gap) for the pile to be laid, which is now deposited on a surface underneath the laying carriage, a discharge belt running perpendicular to the pile direction.
- the laying carriage leads to this periodic movements across the Width of the fleece to be laid on.
- the superstructure moves depending on the movement of the laying carriage.
- Inlet and counter-belt are guided over other deflection rollers around the storage conveyor around, there are arranged below the storage conveyor correspondingly mounted guide rollers which perform compensating movements in dependence of the movements of the upper and the laying carriage.
- EP 0 315 930 B1 discloses a nonwoven striping machine with at least two circulating belts and a reversing carriage which has been accelerated at the reversal points of the travel path.
- the travel path of the laying carriage is perpendicular to the storage conveyor arranged underneath, on which the pile is laid and transported in several layers to form a nonwoven.
- the bands and the laying carriage have independently controllable drives.
- a targeted decoupling between the speed of the laying carriage and that of the belts produces a distortion of the pile, so that the pile emerging from the laying carriage at least in regions between the turning points. can be stored with changing edge thickness.
- a profiling of the deposited nonwoven fabric is made possible. Density changes over the width of the nonwoven web, such as those resulting from influences in a downstream processing machine (e.g., mechanical stapling delays), can be compensated.
- the present invention is thus based on a nonwoven stripper for forming a nonwoven fabric from a plurality of pile layers, consisting of an endlessly circulating infeed belt, a counter-rotating and at the same speed endlessly circulating counter-belt, wherein inlet and counter belt led to two adjacent and a laying gap forming laying rollers are, wherein these laying rollers are arranged in a laying rack effecting a laying carriage, which is mounted above a the laying web to be stored storage conveyor movable transversely to the conveying direction and periodically reciprocates, and inlet and counter belt and the laying carriage via associated drives independently are controllable.
- the object of the present invention is to improve such a device, in particular in the direction of storage and product quality.
- a device by means of which the pile after leaving the laying nip can be subjected to a flow of air directed through it and directed in the direction of the depositing conveyor.
- the laying rollers form due to the wrap of inlet and counter belt a nip for the pile to be laid.
- the directed through the pile air flow in particular from the resultant suction of a negative pressure, it testifies ⁇ a force and holds the pile in the deposited form on the receiving surface, the discharge belt of the storage conveyor, firmly. Between Legespalt and the draw-off, this creates a defined draft zone for the pile.
- the pile can be stretched and compressed during laying, which allows the laying of a nonwoven over the width of different density, different basis weight, so profiling.
- the storage conveyor has in the area of the pile storage on a suction. According to such a configuration is provided ⁇ see that the tray conveyor in the region of the nap laying having a suction, by means of the specified web is acted upon by a fürstömung, a penetrating it airflow (Durchsaugung).
- the suction is designed as a suction, on the upper side of which an air permeable designed and laid
- the suction is in this case designed as a suction chamber connected to a suction, over whose upper side the air-permeable discharge belt of the storage conveyor runs, on which the pile is stored.
- the upper side of the suction chamber is here preferably designed as a surface on which the discharge belt slides. This surface has a plurality of openings in the region of the pile support so that a suction directed through the laid pile creates flow through the suction chamber connected to a suction generator.
- the suction chamber is connected to a controllable vacuum generator.
- the suction power of the suction chamber acting on the suction vacuum generator is controllable, such that the flow directed through the pile is adjustable in its thickness.
- the fan of the vacuum generator is provided with a corresponding control.
- the individual extraction chambers are controlled via controllable throttles or fresh air valves in the degree of pressurization of the vacuum.
- the suction area is thus zonal differently controllable according to the requirements.
- Such embodiments of the invention provide, in particular, that the air permeability of the upper side of the suction chamber can be influenced such that, in particular, the rich in the suction can be targeted.
- the suction area can be adapted to the width of the web to be laid.
- a further pair of adjustable plates and the suction area in the conveying direction of the web can be changed, so it is an adaptation to the width of the Flores to be laid and the overlap of the piles of the laid fleece possible.
- Further education is further possible to provide preferably adjustable air guide elements in the or the suction chambers. This also makes it possible to achieve an adjustment of the flow field which can be optimally adapted to the prevailing conditions.
- nonwovens are guided by conveyor belts through machines and systems. Due to the necessary belt tension and / or occurring loads from processes or due to the net mass resulting in the band-leading rollers deflections. Especially on roller wraps or
- Transfer points between belts are often desired fast running, oscillating, slender rolls for processes, which, however, often have only a low bending stiffness. What is often desired is a gap that is as constant as possible between opposing rolls or a defined gap that follows a predetermined profile.
- the necessary compensation can be realized at the support points of the intermediate support points by means of different spacers or by adjustable bearing points.
- At least one of the laying rollers LE, LG is divided longitudinally into a plurality of roller segments, which are independently adjustable with respect to the gap width of the laying gap LS.
- a pile F is placed on a continuous endless inlet belt E.
- the direction of movement of the pile F is indicated by the arrow.
- the pile F has the speed vF with which the infeed belt E circulates (FIG. 2).
- the infeed conveyor E is stretched around deflecting rollers UE1-UE5, and also a deflecting roller O arranged in a superstructure, not shown, which performs periodic reciprocating movements with the superstructure.
- a shroud D holding the pile F cooperates, which circulates in opposite directions to the infeed conveyor E and at its speed.
- the infeed belt E also runs around two laying rollers LE, LG, which are arranged in a laying carriage LW parallel to each other.
- the two laying rollers LE, LG form a laying gap LS.
- a counter belt G is guided around guide rollers UG1 - UG5, also still in the carriage LW to the laying roller LG.
- the counter belt G runs in the opposite direction to the infeed conveyor E and with the same rather speed like this.
- the pile F is transferred during the movements of the upper carriage of the guide roller O on the opposite belt G and then held in the area between guide roller O and roller LG between infeed and counter belt E, G.
- the pile F leaves the laying carriage LW and is placed on the moving draw-off belt AB of the depositing conveyor to the layers of the fleece V.
- the discharge belt AB runs at right angles to the direction of movement of the laying carriage LW and the belts E, G stretched by the laying rollers LE, LG to the deflection rollers UE1, UG1.
- the laying carriage LW which moves periodically across the width of the nonwoven web V to be laid, has the speed vLW.
- the pile F delivered from the laying nip LS at the speed vF is deposited at a speed vLW, so that the thickness of the stored pile and thus the total thickness of the non-woven V can be varied over its width by varying the laying carriage speed vLW.
- the situation is indicated in the illustration of Figure 2. In this example, a fleece V is laid, which has a smaller thickness in the edge region than in the central region.
- the take-off belt AB of the storage conveyor is permeable to air, for example in the form of a perforated belt or a sieve belt.
- the draw-off belt AB is slidably supporting a suction chamber AK with an upwardly permeable top surface, for example in the form of a surface with a plurality of openings or a grid.
- the suction chamber AK is coupled to a suction air generator SE, which is indicated in FIG.
- the negative pressure within the suction chamber AK causes a draft LZ through the laid pile F or the layers of the laid nonwoven fabric V, so that the pile F in the drafting zone between the clamping point of the two laying rollers LE, LG and the draw-off belt AB can be compressed or stretched in accordance with the current speed ratio vF / vLW.
- Fig. 3a shows a cross section through a segmented laying roller, the belt forces F, and the resulting belt force F Res, which acts on the support frame for the storage of the roll segments.
- 3b shows a plan view of the segmented laying roller with four roller segments, which are mounted in a support frame and their adjustability by a distance S1, S2, S3 at the support points to a preset bending line, which can be neutralized due to the belt tension, so that Slit width between the opposing laying rollers LE, LG is the same. If necessary, the bending line can even be overcompensated, so that the desired line can be a concave line.
- the laying roller LE, LG may be divided longitudinally into several successive roller segments, which different in terms of the gap to the opposite laying roller LG, LE are adjustable.
- the gap distance to the center of the bands is increasingly reduced and adjusted furthest at the outer roller sections, such that in operation due to the tension of the belt, a uniform or an increasing to the center of the laying rollers LE, LG gap distance between the laying rollers LE, LG over the length sets.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Advancing Webs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010050028A DE102010050028A1 (de) | 2010-11-02 | 2010-11-02 | Vliesbandleger |
| PCT/EP2011/066445 WO2012059273A1 (de) | 2010-11-02 | 2011-09-21 | Vliesbandleger und verfahren zum bilden eines vlieses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2635729A1 true EP2635729A1 (de) | 2013-09-11 |
| EP2635729B1 EP2635729B1 (de) | 2015-02-25 |
Family
ID=44675587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11760769.7A Not-in-force EP2635729B1 (de) | 2010-11-02 | 2011-09-21 | Vliesbandleger und verfahren zum bilden eines vlieses |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2635729B1 (de) |
| CN (1) | CN103221592A (de) |
| DE (1) | DE102010050028A1 (de) |
| WO (1) | WO2012059273A1 (de) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2245051A1 (de) * | 1972-09-14 | 1974-03-21 | Krupp Gmbh | Kreuzleger zum vlieslegen |
| DE3738190C2 (de) | 1987-11-10 | 1997-10-16 | Autefa Holding Gmbh | Verfahren zur Bildung eines Vlieses und Vliesbandleger |
| DE4128592A1 (de) * | 1991-08-28 | 1993-03-04 | Baehre & Greten | Verfahren zum kontinuierlichen herstellen eines vlieses aus faserteilchen sowie vorrichtung zur durchfuehrung des verfahrens |
| DE29518587U1 (de) | 1995-11-23 | 1997-04-10 | Autefa Maschinenfabrik GmbH, 86316 Friedberg | Vliesleger |
| DE102004063401A1 (de) * | 2004-12-23 | 2006-07-20 | Autefa Automation Gmbh | Vliesleger und Verfahren zum Führen eines Flors |
| EP1816243B1 (de) * | 2006-02-01 | 2008-06-18 | Oskar Dilo Maschinenfabrik KG | Vorrichtung zum Legen eines Vlieses |
| DE102006028448A1 (de) | 2006-06-21 | 2007-12-27 | ERKO Trützschler GmbH | Kreuzleger |
| DE202007009378U1 (de) | 2006-07-08 | 2007-09-27 | ERKO Trützschler GmbH | Vliesrandbesaugung |
| FR2905956A1 (fr) * | 2006-09-15 | 2008-03-21 | Asselin Thibeau Soc Par Action | Procede et installation pour fabriquer un textile comportant des intercouches, et dispositif s'y rapportant. |
| CN200988875Y (zh) * | 2006-12-08 | 2007-12-12 | 上海嘉翰轻工机械有限公司 | 高速宽幅成型器 |
| EP1975286A1 (de) * | 2007-03-30 | 2008-10-01 | Oskar Dilo Maschinenfabrik KG | Vliesleger |
| CN101126196B (zh) * | 2007-10-10 | 2010-05-19 | 东华大学 | 交叉铺网机上的一种底帘抽吸装置 |
| ATE543930T1 (de) * | 2008-08-21 | 2012-02-15 | Dilo Kg Maschf Oskar | Vorrichtung zum legen eines vlieses |
| EP2169095B1 (de) * | 2008-09-29 | 2012-06-06 | Oskar Dilo Maschinenfabrik KG | Anlage zum gleichmäßigen Legen eines Vlieses |
-
2010
- 2010-11-02 DE DE102010050028A patent/DE102010050028A1/de not_active Withdrawn
-
2011
- 2011-09-21 WO PCT/EP2011/066445 patent/WO2012059273A1/de not_active Ceased
- 2011-09-21 EP EP11760769.7A patent/EP2635729B1/de not_active Not-in-force
- 2011-09-21 CN CN2011800529946A patent/CN103221592A/zh active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012059273A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103221592A (zh) | 2013-07-24 |
| EP2635729B1 (de) | 2015-02-25 |
| WO2012059273A1 (de) | 2012-05-10 |
| DE102010050028A1 (de) | 2012-05-03 |
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