CN103189554A

CN103189554A - Cross-lapper

Info

Publication number: CN103189554A
Application number: CN2011800526897A
Authority: CN
Inventors: 伯恩哈德·吕贝纳克
Original assignee: Truetzschler Nonwovens GmbH
Current assignee: Truetzschler Nonwovens GmbH
Priority date: 2010-11-02
Filing date: 2011-09-21
Publication date: 2013-07-03
Anticipated expiration: 2031-09-21
Also published as: WO2012059271A1; DE102010050027A1; EP2635728A1; CN103189554B; EP2635728B1

Abstract

The invention relates to a cross-lapper for forming a nonwoven fabric made of a plurality of pile layers, consisting of a continuously revolving feed belt, and a counter belt continuously revolving at the same speed and in the opposite direction, wherein the feed belt and the counter belt are guided around two adjacent laying rollers which form a laying gap, wherein said laying rollers are arranged in a laying carriage, which is movably mounted transversely to and above a discharge belt receiving the nonwoven fabric to be laid and moves back and forth periodically, wherein the two belts run on both sides of the laying gap, parallel to the plane of the discharge belt, under tension with respect to deflection rollers arranged in the lapper. According to the invention, switching means (SSE, SSG) are provided, by means of which the feed belt and the counter belt (E, G) can be deflected out of the plane extending parallel to the plane of the discharge belt (AB).

Description

Cross lapping machine

The present invention relates separately to according to the cross lapping machine of the preamble of device claim and claim to a method (cross-lapper, intersect lapper) and is used to form the method for nonwoven (nonwoven, bondedfibre fabric).

Cross lapping machine in common type shown in EP1870499B1 and the EP0865521B1.This cross lapping machine is formed by ring rotation feeding belt (endless revolving feed belt, band is supplied with in rotation for no reason), and the fine hair (pile, matte, heap) that is laid on this ring rotation feeding belt is delivered into laying unit.This feeding belt also has associated (associated) cover tape thereon, and this cover tape covers fine hair and advances in the direction opposite with feeding belt with identical rotating speed.Fine hair keeps being pressed between feeding belt and the cover tape.Bracket (upper carriage) (its throughput direction movement and its execution cycle property that is supported at the fine hair that is supplied to moves back and forth) comprises the deflection roll (deflecting roller) for cover tape and feeding belt.Being maintained at fine hair between feeding belt and the cover tape at first is transported to reverse band (counter belt) then and goes up and be maintained at afterwards between reverse band and the feeding belt.Oppositely band carries out deflection with the deflection roll that the speed identical with feeding belt moves and also is disposed in the bracket.

Be maintained between reverse band and the feeding belt, tomentum is transported on the laying carriage that is supported movably, and this laying carriage comprises the deflection roll (lay down roller) for two bands.Two laying device rollers arranged side by side that are parallel to each other that are used for feeding belt and oppositely are with have formed for unloading of fine hair to be laid and have put (discharge, unloading, discharge) (laying gap, position), this fine hair to be laid is placed in perpendicular to or is orthogonal on the direction of pile direction is at this moment laying unloading to put and being with of advancing below the carriage.

Be this purpose, the periodicity that the laying carriage is carried out the width that crosses nonwoven to be laid moves.Bracket depends on the movement of laying carriage and moves.Center on other deflection roll, feeding belt and reverse band center on to unload to put to be with to be directed into and unload the below of putting band, are furnished with the deflection roll that supports accordingly at this place, and this deflection roll execution depends on the compensation of the movement of bracket and laying carriage and moves.

Transverse to unloading the bottom side place of putting the laying carriage that band advances periodically, feeding belt and oppositely band unload the deflection roll of putting outside the band and advance towards being positioned in the mode of level tension.The direction that depends on the movement of laying carriage, feeding belt and the speed of oppositely being with are the twices of laying the speed (fine hair laying speed) of carriage.High relative velocity between band and fine hair surface (surface of the nonwoven of laying) produced before laying carriage, and this is at its direct of travel,, does not have tomentum guiding place that is.

Put in the zone the tight guiding of material and expect unloading; But horizontal puller strap also shows some and relaxes.This cause with fine hair between friction with contact, this may cause electrostatic effect.Produce uncontrolled movement by it.Therefore, the band of cross lapping machine and unload the reduction that greatest differences on the speed between the surface of putting fine hair causes product surface quality.

EP1 975 286A1 have described a kind of laying unit of carrier types, wherein lay carriage and comprise two lay down roller, and conveyer belt is directed around these two lay down roller.The upper and lower slideway of two conveyer belts is by separately apparatus for widen directed parallel, and deflection roll separately is configured in height convertible, and roller has the diameter less than distance between the slideway.Therefore, when deflection roll was lowered, the fine hair that is laid crossed whole laying width and covers.Deflection roll (it is guide reel in lay-up operation) is raised, makes in this deflection roll and between the guide reel of the apparatus for widen before the lay down roller, and band is upwards advanced with acute angle.Between the guide reel and lay down roller of apparatus for widen, band is parallel to unload to be put band and advances and contact with the fine hair of laying possibly.

Therefore the present invention comes from a kind of cross lapping machine that is used to form the supatex fabric of being made by a plurality of tapetums, this cross lapping machine comprises continuous rotary feeding band, with with identical speed and the continuous reverse band of rotation in the opposite direction, wherein feeding belt and reverse band are directed around forming two adjacent lay down roller of laying the gap, wherein said lay down roller is disposed in lays in the carriage, this laying carriage is put band and is installed movably above the band and periodically move around unloading to put transverse to unloading, and wherein two bands are on the both sides of laying the gap, be parallel to and unload the plane of putting band, advance under tension force with respect to the deflection roll that is arranged in the lapping machine.

The objective of the invention is to be conceived to especially unload put with product quality to improve this device.

Feature by device claim and claim to a method realizes this purpose.Useful embodiment of the present invention is produced by appended claims.

According to the present invention, provide conversion equipment (switching means), by this conversion equipment feeding belt and oppositely band can be deflected to be parallel to and unload outside the plane of the plane of putting band extending.Conversion equipment depends on the movement of laying carriage and is controlled.The feasible so supported roller of the place ahead band (leading belt) (at the direct of travel of laying carriage) separately raises continuously and therefore upwards advances with an angle and be in and is parallel at first outside the plane of unloading the plane extension of putting band.Tail band (trailing belt, traction belt, dilatory band) (last the seeing of direct of travel of laying band) is not raised and remains in the initial parallel plane and therefore covers the fine hair that just has been laid.

Use conversion equipment of the present invention, the corresponding lay down roller of laying carriage directly make feeding belt and oppositely band with continuously and the mode that replaces deflect into to be parallel to and unload outside the plane of the plane of putting band extending.

By promoting the place ahead band (looking up in the side of advancing), avoided with double lay band that carriage velocities advances contact and with the contacting of the fine hair of in preceding circulation, laying.Some adverse influences have also been avoided, for example the influence that is caused by drag flow.Therefore, conversion equipment (depend on lay carriage and move the circulation of carrying out band and rise and fall by this conversion equipment) carries out signal with controller communicates by letter, and this controller is controlled the driver of cross lapping machine.

According to embodiments of the invention, what can be provided is that conversion equipment is associated with deflection roll respectively, can regulate movably thereby this deflection roll is supported.In this embodiment, feeding belt and oppositely the deflection roll that advances on it of band supported fully, thereby in the vertical direction can deflection, these rollers are coupled to corresponding conversion equipment and therefore are suitable for and lay carriage and move synchronously and controlled.

According to another embodiment of the invention, conversion equipment by be associated with respectively act on feeding belt and oppositely with on backing roll.In this embodiment, corresponding backing roll is associated with feeding belt and lays band in the zone between the lay down roller of deflection roll and laying carriage, and backing roll can activate respectively by the conversion equipment that is hinged on it.In actuating state not, corresponding band is parallel to and unloads the plane of putting band and advance.Corresponding to belt tension, band contacts backing roll slightly.

When associated conversion equipment activated, band upwards advanced to backing roll and advances to the deflection roll that is fixedly fastened on the cross lapping machine downwards from backing roll from lay down roller with an angle.Therefore, band is deflected three times.It is outside and put the band next door unloading that backing roll and deflection roll are positioned at laying work area.

An advantage of the backing roll that this is extra is that band is not supported yet when band has in the shape body that is being raised.Here, backing roll can directly be placed on unloads the edge of putting band, make between lay down roller and the backing roll with lax distance be minimized.

Cause with rise and the conversion equipment of falling can be motor driver, control this lifting and fall movement according to predetermined this motor driver that moves through.By this way, promote and fall movement and can be performed, do not act on the process of deployment and there is disadvantageous masterpiece to be used on the Tape movement and therefore.

Conversion equipment also can be designed as the driver that is suitable for using fluid media (medium) (hydraulically namely/pneumatically) operation, and wherein, in this embodiment, working media is applied to corresponding driver or cylinder via dynamoelectric switching valve.Again, can realize that the motion that is fit to is used for promoting and falling movement.

Hereinafter be explaining to embodiments of the invention with reference to the accompanying drawings.

In the accompanying drawings:

Fig. 1 and Fig. 2 illustrate cross lapping machine, and one illustrates the laying carriage of advancing forward and another and shows it and advance backward, and

Fig. 3 shows an interchangeable embodiment, and wherein deflection roll is suitable for being raised unloading the both sides of putting band.

Fine hair F is disposed on the annular feeding belt E of rotation.Direct of travel by arrow indication fine hair F.Fine hair F moves with speed v F, and wherein feeding belt E is with this speed circulation.Feeding belt E centers on deflection roll UE1-UE5 and also tightens and guide around the first deflection roll O that is disposed among the bracket OW that does not at length illustrate, and this deflection roll moves back and forth with bracket OW execution cycle property.In Fig. 1, the bracket with deflection roll O moves to the right side from the left side on the direction of arrow.

Feeding belt E also advances around two lay down roller LE, LG, and these two lay down roller are arranged in parallel to each other lays among the carriage LW.These two lay down roller LE, LG form and lay gap L S.Oppositely band G centers on deflection roll UG1-UG5 and is laying carriage LW inside, also is being directed around lay down roller LG.Oppositely band G advances on the direction opposite with feeding belt E and with identical speed.During bracket moved, fine hair F was transported to reverse band G and is clamped between feeding belt and reverse band E, the G the zone between deflection roll O and lay down roller LG then from deflection roll O.Fine hair F leaves to lay carriage LW and be placed on mobile unloading via the laying gap L S between lay down roller LE and the LG puts band AB upward to form the layer of nonwoven V.Unload and put band AB and meet at right angles with the moving direction of laying carriage LW and advance, and and be tightened up band E, G between lay down roller LE, LG and deflection roll UE1, UG1 and meet at right angles and advance.

With respect to the moving direction (by the arrow indication) of feeding belt and reverse band E, G, backing roll SE, SG are disposed in the upstream of deflection roll UE1, UG1, and the vertical position of backing roll is adjustable by corresponding conversion equipment SSE, the SSG that is associated with on it.

Under the situation shown in Fig. 1, lay carriage LW and cross and put band AB be used to unloading of nonwoven V to be laid and enter the right side from left row.The feed speed of fine hair F is vF.In the diagram laying stage, has the bracket of deflection roll O also with 0.5 * V _FSpeed move to the right side from the left side.

Lay carriage with average speed V _FCross to unload and put platform and move.Simultaneously, feeding belt E drops on the layer of nonwoven V and does not have a relative velocity in the zone between lay down roller LE and deflection roll UE1.Again, owing to oppositely take identical speed in the zone of band G and feeding belt their common extension between roller O and lay down roller LG, therefore do not have relative velocity to be used to unload and put purpose, and therefore, leave laying carriage LW and must take to double the speed V that lays carriage towards the reverse band of deflection roll UG1 _G=2 * V _LW, that is, it must cross and unloaded the nonwoven of putting and move to double the speed of laying carriage.During this laying stage, namely, when laying carriage LW moves to the right side from the left side, the conversion equipment SSG that is associated with backing roll SG is activated, and the reverse band G that makes between lay down roller LG and deflection roll UG1 tension advance is upward deflected and therefore no longer is parallel to and unloads the plane of putting band AB and extend.Contacting between the reverse band G that has therefore avoided disturbing nonwoven structure and the nonwoven V.Left side backing roll SE is positioned at its lower position, does not have the deflection of feeding belt E at this place.As explaining in the preamble, lay band and be placed on the nonwoven V.

Fig. 2 illustrates the second stage of process of deployment, wherein lays carriage LW and advances to the left side from the right side and correspondingly lay another layer.Backing roll SG is lowered now, makes oppositely band G be placed on the nonwoven and does not relatively move.Left side backing roll SE promotes by the activation of conversion equipment SSE now, and is similar to the situation among Fig. 1, causes feeding belt E to promote from nonwoven V.The feeding belt E that advances in backing roll and the direction of returning roller SE, UE1 from laying carriage LW has the speed of VE=2 * VF with respect to nonwoven V.

Conversion equipment SSE, the SSG of backing roll SE, SG is connected with unshowned controller here, and this controller is also carried out the control to being used for each band E, G and being used for laying the driver of carriage LW.Therefore, the activation of conversion equipment SSE, SSG is accurately synchronously carried out with the movement of laying carriage LW.

Fig. 3 illustrates the embodiment that wherein deflection roll UE1, UG1 form backing roll SE, SG simultaneously, feeding belt E and oppositely band G utilize these backing rolls respectively and can alternately deflect into to be parallel to and unload outside the plane of the plane of putting band AB extending.

The reference number inventory

F fine hair

The E feeding belt

G oppositely is with

O deflection roll bracket

LW lays carriage

The V nonwoven

LE lay down roller (feeding belt)

LG lay down roller (oppositely band)

LS lays the gap

UE1-UE5 deflection roll (feeding belt)

UG1-UG5 deflection roll (oppositely band)

SE backing roll feeding belt

The SG backing roll oppositely is with

SSE conversion equipment backing roll feeding belt

SSG conversion equipment backing roll oppositely is with

VF fine hair F speed

VE feeding belt E speed (with respect to nonwoven V)

AB unloads puts band

Claims

1. cross lapping machine that is used to form the supatex fabric of being made by a plurality of tapetums, comprise ring rotation feeding belt (E) with identical speed and the reverse band (G) of ring rotation in the opposite direction, wherein said feeding belt and described reverse band (E, G) around forming two adjacent lay down roller (LE that lay gap (LS), LG) be directed, wherein said lay down roller is disposed in lays in the carriage (LW), described laying carriage transverse to unload put band (AB) and described unload to put install movably above the band and periodically move around, described unloading put band reception described supatex fabric to be laid

These two bands (E, G) are parallel in the both sides in described laying gap (LS) and describedly unload the plane of putting band (AB) and advance under tension force with respect to the deflection roll (UE1, UG1) that is arranged in the described cross lapping machine,

It is characterized in that, be provided with conversion equipment (SSE, SSG), described feeding belt and described reverse band (E, G) can deflect into by described conversion equipment and be parallel to described unloading outside the plane of the plane of putting band (AB) extending.

2. cross lapping machine according to claim 1 is characterized in that, the backing roll (SE, SG) that described conversion equipment (SSE, SSG) is acted on described feeding belt and oppositely is with (E, G) by being associated with respectively.

3. cross lapping machine according to claim 2 is characterized in that, is associated with described feeding belt in the zone of described backing roll (SE, SG) between described lay down roller (LE, LG) and stationary yaw roller (UE1, UG1) and oppositely is with (E, G).

4. cross lapping machine according to claim 1 is characterized in that, thereby described conversion equipment (SSE, SSG) is associated with the deflection roll (UE1, UE2) that is supported in the described cross lapping machine respectively can be regulated movably.

5. according to a described cross lapping machine in the aforementioned claim, it is characterized in that described conversion equipment (SSE, SSG) is designed to electronic driver.

6. according to a described cross lapping machine among the claim 1-4, it is characterized in that described conversion equipment (SSE, SSG) designed to be able to the driver that activates by fluid media (medium).

7. method that is used for forming at cross lapping machine the nonwoven of a plurality of tapetums, described method is passed through

At ring rotation feeding belt (E) and the fine hair of carrying in the opposite direction and between with the reverse band (G) of identical speed ring rotation in feeding belt (E) supply (F), wherein said feeding belt and reverse band (E, G) around two adjacent lay down roller (LE that form the laying carriage (LW) of laying gap (LS), LG) be directed, and described laying carriage (LW) is supported laterally mobile and periodically move around in order to put band (AB) top unloading of reception described nonwoven to be laid, wherein said two bands are returned in the back in described laying gap (LS) and in both sides

It is characterized in that,

To be positioned at be laid on the described described feeding belt that unloads the front of putting the corresponding fine hair on the band (AB) or oppositely band (E, G) rise to described and unload outside the parallel plane plane of putting band (AB).

8. method according to claim 7 is characterized in that, will be positioned at the described band (E of the front of described laying carriage (LW) respectively at the direct of travel of described laying carriage; G) promote continuously and alternately from deflection or backing roll, thereby described band deflects into initial and described unloading outside the parallel plane plane of putting band (AB) from the described fine hair of having laid (F), wherein the described band that trails at the direct of travel of described laying carriage (LW) is maintained at and is parallel to described unloading in the plane of putting band (AB) at first, covers the described fine hair of just having laid (F) thus.

9. according to claim 7 or 8 described methods, it is characterized in that promote described feeding belt respectively or oppositely be with (E, G) by backing roll (SE, SG), corresponding band be controlled and be associated with to described backing roll can by conversion equipment (SSE, SSG).

10. method according to claim 9 is characterized in that, is associated with described feeding belt in the zone of described backing roll (SE, SG) between described lay down roller (LE, LG) and stationary yaw roller (UE1, UG1) and oppositely is with (E, G).

11. according to claim 7 or 8 described methods, it is characterized in that, utilize deflection roll (UE1, UG1) to carry out described feeding belt and the oppositely alternately lifting of band (E, G) respectively, described deflection roll can and be associated with corresponding band (E by conversion equipment (SSE, SSG) control in described cross lapping machine; G) thus and supported can the adjusting movably.

12. according to claim 9 or 11 described methods, it is characterized in that, motor is driven, preferably electronic driver or the driver that can activate by fluid media (medium) promote backing roll (SE, SG) or deflection roll (UE1, UE2) as described conversion equipment (SSE, SSG) by described driver.