EP3415669A1 - Transport device for a nonwoven fabric coiler - Google Patents

Abstract

A nonwoven winder (1) has a holding section (3), a transport section (100) and a guide section (20). The holding section (3) is designed to receive a winding shaft (7). The guide section (20) has a running surface (21) facing away from a bottom, on which the nonwoven winder (1) is erected, and is designed to receive the weight of the winding shaft (7). Transport section (100) and guide section (20) are designed to move the winding shaft (7) from the holding section (3) on the running surface (21) in the direction of a Anwickelposition (4), in which the nonwoven winder (1) is arranged, the winding shaft (7) to be wound up with a nonwoven located on a contact roller (8) of the nonwoven winder (1).

A method for operating the nonwoven winder (1) comprises a step of engaging the winding shaft (7) located in the holding section (3) at least from a side facing away from the contact roller (8) of the nonwoven winder (1) by means of the locking section (130) of the nonwoven winder (1) on. Subsequently, the moving section (120 - 123) is moved in the direction of the contact roller (8). Further, there is a step of detecting the presence of a state in which the winding shaft (7) has reached the winding position (4). If this condition is detected, the locking section is stopped.

Description

The invention relates to a device for transporting a winding shaft in a nonwoven winder from a waiting to a Anwickelposition and of this in a winding position of the nonwoven winder and a nonwoven winder equipped therewith.

Nonwoven winder are known per se. They serve to wind a fleece, for example coming out of a carding machine, onto a winding shaft. For this purpose, empty winding shafts are inserted in a magazine of the nonwoven winder and gradually brought into a waiting position. The waiting position serves, on the one hand, to separate the winding shaft from the other winding shafts and to put them on the other hand before the start of the actual winding process in rotation. In order to wind a winding shaft, it is provided to convey the winding shaft from the waiting position into a winding position, in which the winding shaft to be wound comes into frictional contact with a contact roll on which the fleece runs in the area of the nonwoven. In this conveying the winding shaft is locked on both sides by means of levers and quasi floating brought into the Anwickelposition. If a fault occurs, so that the transport is interrupted, it can happen that the winding shaft gets caught in the air. This is a very dangerous situation especially for an operator because the winding shaft could come loose and fall off.

The object of the invention is therefore to improve the safety of a nonwoven winder when conveying the winding shaft from the waiting position to the Anwickelposition.

This object is solved by the subject matter of claims 1 and 13. Advantageous developments are specified in the subclaims.

According to the invention, a nonwoven winder is provided, which has a holding section, a transport section and a guide section. The holding section is designed to receive a winding shaft. The guide portion has a running surface facing away from a bottom on which the nonwoven winder is erected, and is configured to receive the weight of the winding shaft. The transport section and guide section are further configured to move the winding shaft from the holding section on the running surface in the direction of a winding position in which the nonwoven winder is adapted to wind the winding shaft with a nonwoven located on a contact roller of the nonwoven winder. Ie. the weight of the winding shaft is supported on the guide section during the entire process. This has the advantage that the elements engaging the winding shaft must apply significantly less gripping force. In addition, the winding shaft can not fall off in the event of a fault, whereby the security is improved, especially for an operator.

Alternatively, the winding shaft is guided close to the tread, with an area close to a few millimeters or even below one millimeter. Although the transport section has to absorb the weight of the winding shaft, a disturbance does not cause the winding shaft which may be released to fall away uncontrollably or cause damage to the nonwoven winder. On the one hand, the low drop height causes hardly any damage to be feared on the running surface. On the other hand, due to its substantially larger diameter, the winding shaft can not leave the gap between transport section and running surface, so that it can continue to remain exclusively in the region of the transport section.

Seen transversely to the direction of movement of the winding shaft, the distance of the tread from the holding portion in the direction Anwickelposition preferably first increases and then falls off again. Thus, the travel of the winding shaft is quasi halved, along which the winding shaft in case of failure and possible loosening of the gripping device, which is to take the winding shaft, roll away. This reduces the final speed of the winding shaft and thus also serves the operational safety.

Preferably, the tread is continuous. Thus, there are hardly any vibrations on the nonwoven winder during the transport of the winding shaft.

In this case, the running surface, seen transversely to the direction of movement of the winding shaft, preferably formed like a circular arc or elliptical. These are particularly well suited to keep suitable tread shapes, in particular acceleration and final speed of a winding shaft winding within limits.

In any of the aforementioned nonwoven winder, the guide portion may be part of a frame wall of the nonwoven winder. This therefore assumes a dual function and allows in addition to maintaining the number of parts consistent outer dimensions of the nonwoven winder at least in width and length.

Additionally or alternatively, the nonwoven winder may have a sensor. This is set up to detect when the winding shaft is in the holding portion or in Anwickelposition. This allows a control of the nonwoven winder, for example, to initiate the application and / or separation of the web when the winding shaft is in Anwickelposition. The sensor can be optical, magnetic and / or mechanical nature. It can therefore be optimized for the respective requirements.

The transport section of each of the aforementioned nonwoven winder may have a locking portion. This is designed to attack the winding shaft of a side facing away from the contact roller. It is also attached to a moving portion which is adapted to move the locking portion in the direction of the contact roller. It may therefore be sufficient to move only the movement section to move the winding shaft from the waiting position to the Anwickelposition. This leads to a very simple and inexpensive construction.

Preferably, the movement section has a linear guide, by means of which the locking section is guided along its movement. The linear guide allows the use of a pneumatic drive.

In the two last-mentioned variants, the movement section preferably comprises a pivotably mounted lever. This is arranged rotatable about an axis of the contact roller. The nonwoven winder is arranged to tune the movements of the lever and the locking portion such that the winding shaft is securely taken along by the locking portion during its movement to the Anwickelposition. This makes it possible, in particular in the case of an initially rising running surface, not to let the pressure of the winding shaft on the running surface become too great, which benefits the operational safety.

Each of the aforementioned locking portions may be configured to fall out of the winding shaft safely. This increases the security that the winding shaft can not solve easily even in case of a fault. In addition, the guide section can be at least partially relieved of its weight by means of a slight lifting of the winding shaft, for example in the context of a few millimeters during the conveyance of the winding shaft.

In each of the aforementioned nonwoven winder, the holding section, the transport section and the guide section may each be provided in duplicate, on opposite sides of the nonwoven winder. This makes it possible to convey the winding shaft by means of their ends. Consequently, the area for receiving the fleece is not subject to any mechanical loading due to conveyance and can be optimized for winding up the fleece.

An inventive method for operating one of the aforementioned nonwoven winder first comprises a step of engaging the winding shaft located in the holding section at least from a side facing away from the contact roller of the nonwoven winder by means of a locking section of the nonwoven winder. Subsequently, the locking portion is moved in the process by means of the moving portion of the nonwoven winder in the direction of the contact roller. Further, there is a step of detecting the presence of a state in which the winding shaft has reached the winding position. If this condition is detected, the movement section is stopped. As a result, the invention provides a very simple method for conveying a winding shaft from the waiting position to the winding position.

Figur 1

einen Vlieswickler gemäß einer Ausführungsform der Erfindung,

Figur 2

den Vlieswickler von Figur 1 hinsichtlich dessen Verriegelungs- und Bewegungsabschnitts,

Figur 3

den Vlieswickler von Figur 1 hinsichtlich dessen Verriegelungs- und Bewegungsabschnitts von der in Figur 1 Rückseite her,

Figur 4

die Darstellung von Figur 2 in größerem Detail und ohne Kontaktwalzen-Antriebsmechanismus,

Figur 5

zwei vergrößerte Ansichten von Figur 4 und

Figur 6

eine zu Figur 5 ähnliche Ansicht des Vlieswicklers, wenn sich die Wickelwelle in Anwickelposition befindet.

Further features and advantages of the invention will become apparent from the following description of preferred embodiments. Show it:

FIG. 1

a nonwoven winder according to an embodiment of the invention,

FIG. 2

the nonwoven winder from FIG. 1 in terms of its locking and moving section,

FIG. 3

the nonwoven winder from FIG. 1 in terms of its locking and moving portion of the in FIG. 1 Back side,

FIG. 4

the representation of FIG. 2 in greater detail and without contact roller drive mechanism,

FIG. 5

two enlarged views of FIG. 4 and

FIG. 6

one too FIG. 5 similar view of the nonwoven winder when the winding shaft is in Anwickelposition.

FIG. 1 shows a nonwoven winder 1 according to an embodiment of the invention. The components which are immaterial to the invention are not explained further.

The nonwoven winder 1 essentially comprises two frame walls 20, which are combined by means of non-designated connectors to form a frame which receives or holds all other functional elements of the nonwoven winder 1.

The frame walls 20 have in a right area on a magazine 2, in which unnamed winding shafts (here: two) are.

Furthermore, the nonwoven winder 1 comprises on each frame wall 20 a recess which defines a waiting position 3 for a winding shaft 7. Since the winding shafts are held on both sides by a respective frame wall 20, a waiting position 3 is thus realized by means of the two frame walls 20. The frame walls 20 thus form a holding section for a winding winding shaft 7 by means of the waiting position.

In the waiting position 3, the winding shaft 7 arranged therein is set in rotation by means of a clamping section 11. The Andrehabschnitt 11 contacts the area of the winding shaft, which serves to receive fleece. Ie. not the entire winding shaft 7 is set in rotation but only here centrally arranged thus winding section, the circumference forms the actual winding surface.

In order to transfer a winding shaft from the magazine 2 to the waiting position 3, a first transport section 9 is provided.

Furthermore, the nonwoven winder 1 has a Anwickelposition 4, which is located in a bending region, as seen along the axis of rotation of the contact roller 8 of the web winder 1, between the frame wall 20 and a contact roller 8. The contact roller 8 leads in a known manner, the incoming fleece zoom to be wound on the winding shaft.

For automatically changing the nonwoven fabric from one winding shaft to the next, a separating section 12 is provided which comprises a cutting section not further described here.

Furthermore, the nonwoven winder 1 has a winding position 5, which is realized by means of a section arranged here on the left between frame wall 20 and contact roller 8. In this position 5, the corresponding winding shaft, which has already taken up fleece in the Anwickelposition 4, finally wound.

For transporting here the winding shaft 7 from the waiting position 3 on the Anwickelposition 4 to the winding position 5, a locking and moving portion 100 is used, which thus forms a second transport section.

After winding the respective winding shaft, the fleece is separated by means of the separating section 12, and the wound winding shaft is moved by means of a winding and Ausschubabschnitts 10 in a Ausschubposition 6 of the nonwoven winder 1.

Each rack wall 20 has an upwardly facing guide surface 21, which extends mainly from the waiting position 3 to the Anwickelposition 4.

FIG. 2 shows the nonwoven winder 1 with respect to its locking and moving portion 100th

The locking and moving portion 100 preferably comprises on both outer sides of the frame walls 20 elements which serve to move here the winding shaft 7 from the Andrehposition 3 in the Anwickelposition 4.

These elements each include a belt 113 looped around an associated pair of pulleys 116, 119. By rotating the respective, not visible here pulley 116, an associated pivot member 120 is co-rotated. A connecting shaft 114 is provided, both pulleys 119, of which only the front is visible, to connect with each other to move.

The connecting shaft 114 is freely rotatably received by both frame walls 20 by means of pivot bearings 22 in the frame walls 20.

A drive section 30 is provided to drive by means of a motor 31 and here a gear 32 via a belt 33 a preferably coaxial with the respective pulley 116 arranged pulley 34 which is non-rotatably to the contact roller 8, but freely rotatable with respect to the pulley 116, is arranged.

FIG. 3 shows the nonwoven winder 1 with respect to its locking and moving portion 100 of the in FIG. 1 Rear side and without drive section 30. This is visible in the direction of the contact roller 8, adjacent arranged pulley 116 visible. As can be seen, the arrangement is substantially the same as at the front of the nonwoven winder 1 in FIG FIG. 2 ,

Apart from that, a drive section 110 is provided, which in the example shown has a motor 111 with a gear 112. Through the gear 112, the motor 111 is able to set the associated lower pulley 119 in rotation, around which the belt 113 is looped. Via the connection to the connecting shaft 114, the motor 111 is thus capable of carrying out the in FIG. 2 shown locking and moving portion 100 also to move.

The drive section 110 is preferably fastened by means of a fastening element 101 to the frame wall 20 shown here.

In this case, the locking and moving section 100 includes by way of example two pivoting parts 120, which are arranged rotationally fixed relative to a respective belt pulley 116. Pulley 116 and pivot member 120 may as well be integrally formed with each other.

FIG. 4 is again a representation of FIG. 2 in greater detail and without contact roller drive section 30. Here it can be seen that preferably a tension roller 117 is provided to set the belt 113 under the necessary bias.

FIG. 5 includes two enlarged views of FIG. 4 ,

In the example shown, the pulley 116 and the pivoting member 120 are secured together by fasteners 118 such as screws. On the pivoting part 120, a pneumatic cylinder 121 together with a linear guide 123 is attached. The linear guide 123 leads a carriage 122 translationally from right to left and back. On the carriage 122, in turn, a locking portion 130 is attached.

The locking portion 130 comprises a pneumatic cylinder 131, which is pivotally attached to the slide 122 with an end facing away from its piston 132. The free end of the piston 132 of the pneumatic cylinder 131 in turn is pivotally mounted on a locking lever 133, which in turn is also pivotally mounted on the carriage 122.

By moving out of the piston 132 of the pneumatic cylinder 131 is able to move the pivot lever 133 in the winding shaft 7, so that is held by means of the locking portion 130.

The pneumatic cylinder 121 is able to move the carriage 122 along the linear guide 123 via its piston (not shown here).

If the winding shaft 7 is to be moved from the waiting position 3 into the winding position 4, the belt 113 is moved by means of the drive section 110, not visible here, in such a way that the belt pulley 116 is rotated counterclockwise in this case. Thus, the arrangement pivoting part 120, pneumatic cylinder 121, linear guide 123 and locking portion 130 is now co-rotated. In this case, the locking portion 130 first rotates about the axis of rotation of the contact roller. 8

In order to hold or guide the winding shaft 7 in contact with or very close to the running surface 21 of the frame wall 20, the carriage 122 is gradually moved in the direction of the axis of rotation of the pivoting part 120 during pivoting by means of the pneumatic cylinder 121 or by retracting its piston Guide 123 moves. Close means preferably in the millimeter range or below.

FIG. 6 shows one too FIG. 5 Similar view of the nonwoven winder 1, when the winding shaft 7 is in Anwickelposition 4.

In the Anwickelposition 4 the nonwoven fabric is transferred from the contact roller 8 to the winding shaft 7 by means of known Reibeschlusses between winding shaft 7 and contact roller 8 and thus the winding shaft 7 is wound.

If the winding shaft 7 is wound, the pivoting part 120 is according to FIG. 6 further rotated counterclockwise in the direction of winding position 5. It is now in the context of the linear guide 123 now taken to ensure that the winding shaft 7 is constantly in contact with the contact roller 8.

If the winding shaft 7 is in the winding position 5, the locking section 130 lets go of the winding shaft 7 again, and the pivoting part 120 is rotated back in the opposite direction, ie clockwise in accordance with FIG. 6, to take over the next winding shaft located in the waiting position 3 to be able to, when the winding shaft 7 now located in winding position 5 is almost fully wound and the web is to be transferred to a new winding shaft 7.

The invention is not limited to the described embodiment.

The running or guide surface 21 advantageously extends continuously and is preferably formed in the form of a circumferential line of a circle or an ellipse. In any case, it reduces their distance to the ground on which the nonwoven winder is placed, at least in the direction of waiting position 3 or 4 Anwickelposition.

The drive section 30 can also have an electric motor as drive means.

The same applies to the pneumatic cylinder 121. As a linear guide, for example, a preferably self-locking in the direction of the ground worm gear in question.

In addition, a sensor system can be provided to detect when the winding shaft 7 is in the waiting position 3, in the winding position 4 and / or in the winding position 5. The sensor may include optical sensors. Alternatively, touch-sensitive sensors such as switches are conceivable, which are advantageously actuated by the respective winding shaft when they reach the respective position 3-5.

As a locking portion 130 is any type of transport device in question, which is able to lift a winding shaft. It can be designed, for example, electromagnetically.

The carriage 122 is received on the linear guide 123, preferably guided by means of a dovetail guide.

The pulleys 34, 116 need not be coaxial with each other.

The belt drives may be replaced individually or in total by any other transmission mechanism.

As a result, the invention provides a simple and cost-effective way to move a winding shaft safely at least from the waiting position 3 in the Anwickelposition 4.

LIST OF REFERENCE NUMBERS

1

Fleece roller

2

magazine

3

waiting position

4

winding start

5

winding position

6

eject

7

winding shaft

8th

contact roller

9

transport section

10

Winding and Ausschubabschnitt

11

Andrehabschnitt

12

separating section

20

frame wall

21

tread

22

pivot bearing

30

locking section

31

engine

32

transmission

33

belt

34

pulley

100

Locking and moving section

101

fastener

110

movement section

111

engine

112

transmission

113

belt

114

connecting shaft

116

pulley

117

idler

118

fastener

119

pulley

120

attachment portion

121

pneumatic cylinder

122

carriage

123

linear guide

130

locking section

131

pneumatic cylinder

132

piston

133

locking lever

Claims (13)

Nonwoven winder (1), • having a holding section (3) designed to receive a winding shaft (7), a transport section (100) and - A guide portion (20), the A running surface (21) pointing away from a base on which the nonwoven winder (1) is set up, and Is designed to receive the weight of the winding shaft (7), Wherein the transport section (100) and the guide section (20) are designed to move the winding shaft (7) from the holding section (3) on or near the running surface (21) in the direction of a winding position (4), in which the nonwoven winder (1 ) is arranged to wind the winding shaft (7) with a on a contact roller (8) of the nonwoven winder (1) located nonwoven. Nonwoven winder (1) according to claim 1, wherein the running surface (21), seen transversely to the direction of movement of the winding shaft (7), the distance of the running surface (21) from the holding portion (3) in the direction Anwickelposition (4) rises and falls again. A nonwoven winder (1) according to claim 2, wherein the tread (21) is continuous. Nonwoven winder (1) according to claim 3, wherein the running surface (21), seen transversely to the direction of movement of the winding shaft (7), is formed like a circular arc or elliptical. Nonwoven winder (1) according to one of the preceding claims, wherein the guide section (20) is part of a frame wall (20) of the nonwoven winder (1). A nonwoven winder (1) according to any one of the preceding claims, further comprising a sensor adapted to detect when the winding shaft (7) is in the holding section (3) or in the winding position (4). Nonwoven winder (1) according to claim 6, wherein the sensor system is of optical, magnetic and / or mechanical nature. Nonwoven winder (1) according to one of the preceding claims, wherein the transport section (100) has a locking section (130) which • is designed to attack the winding shaft (7) from one of the contact roller (8) side facing away and • is attached to a movement section (120 - 123) which is arranged to move the locking section (130) in the direction of the contact roller (8). A nonwoven winder (1) according to claim 8, wherein the moving portion (120-123) comprises a linear guide (123) by means of which the locking portion (130) is guided along its movement. A nonwoven winder (1) according to claim 8 or 9, wherein • the moving portion (120 - 123) comprises a pivotally mounted lever (120) which is arranged rotatable about an axis of the contact roller (8) around, and • the nonwoven winder (1) is adapted to tune the movements of the lever (120) and the movement section (120-123) such that the winding shaft (7) is safely taken along by the locking section (130) during its movement to the winding position (4). A nonwoven winder (1) according to any one of claims 8 to 10, wherein the locking portion (130) is configured to resiliently grasp the winding shaft (7). A nonwoven winder (1) according to one of the preceding claims, wherein the holding section (3), the transport section (100) and the guide section (20) are each provided in duplicate, on opposite sides of the nonwoven winder (1). Method for operating a nonwoven winder (1) according to one of the preceding claims, comprising the steps Engaging a winding shaft (7) located in the holding section (3) at least from one side facing away from the contact roller (8) of the nonwoven winder (1) by means of the locking section (130) of the nonwoven winder (1), Moving the movement section (120-123) in the direction of the contact roller (8), • detecting the presence of a state in which the winding shaft (7) has reached the Anwickelposition (4), and Upon detection of the one state, stopping of the movement section (120-123).

Images