EP1921034A2 - Coiling machine for coiling part of a material sheet created from a material sheet - Google Patents

Abstract

The winder has winding cores (4) provided with multiple perforations in its core bodies. The winding cores slide on a temporarily suckable and perforated expansion winding shaft (9) such that the perforations of the cores are completely overlapped. The winding cores are clamped on the expansion winding shaft by using a mechanical, pneumatic, or hydraulic expansion device, during the start winding phase. A partial material web on the winding core is sucked to the winding shaft by using a vacuum device (19).

Description

The invention relates to a winding machine for winding material webs produced from a web of material, in particular paper or board webs, each having a winding tube to a respective winding roll on which a Anpresstrommel abuts when winding, wherein the Anpresstrommel a device for producing the Teilmaterialbahnen in the running direction of the web upstream.

Such a winding machine for winding material webs produced from a material web at the end of a production line, for example, from the two documents EP 0 828 677 B1 and EP 0 943 569 B1 known.

A known winding machine for winding a machine-wide material web, as for example from the document WO 98/52858 A1 is known, comprises a Anpresstrommel on which the winding roll is applied and thus forms a winding nip, the so-called nip with the Anpresstrommel. The winding is wound on a fixed core, the spool, and carried away according to the diameter increase usually pressure controlled by the Anpresstrommel.

To change the machine-width material web to a new spool, a new spool is applied to the Anpresstrommel above the first winding nip and by releasing the web tension or a Bandumschlingung the web is forced to wind up on the new spool. The finished wound spool can be transported away to a slitter be lowered while the newly resulting winding in the preferably horizontal main winding position. In this way, uninterrupted winding of the machine-width material web is possible.

The use of an upstream device for the production of partial material webs in the winding machine now provides the disadvantage of a noticeably difficult roll change due to the necessary transfer of several web beginnings on the cores.

It is the object of the invention to develop a winding machine of the type mentioned in such a way that a roll change can be performed much faster, more reliable and universal.

This object is achieved according to the invention in a winding machine of the type mentioned in that the cores are each provided with a plurality of perforations in their sleeve bodies and that the cores are applied to an at least temporarily besaugbare and perforated expansion winding such, preferably pushed, that several, preferably all Perforations of the cores with the perforations of the expansion winding shaft at least partially, preferably predominantly, in particular completely overlap can be brought.

The object of the invention is completely solved in this way.

Due to the internal suction of the cores, the advantage is achieved that the web starts the Teilmaterialbahnen safely taken up and sufficiently fixed. Thus, the roll change can be completed with significantly reduced change times overall process reliability. In addition, the committee is reduced during the roll change and created a way to retain known and proven winding concepts with better overall winding qualities. Also, the role change without intervention of the operator team can be fully automatic, so user-friendly be designed. And finally, individual webs can be continuously wound from the outset, where so far only machine-wide webs were manageable online.

In a first preferred embodiment, the expansion winding shaft clamps the winding sleeves, preferably pushed on, at least during the winding phase by means of at least one mechanical, pneumatic or hydraulic expansion device. Among other things, the anti-rotation device achieved thereby ensures effective initial winding of the web starts of the partial material webs.

Furthermore, the expansion winding shaft can be sucked onto the winding tubes by means of at least one preferably controllable / controllable and preferably detachable vacuum device, at least during the winding phase of the partial material webs. Hereby, inter alia, an effective initial winding of the web beginnings of the partial material webs is ensured. A possible coupling and uncoupling of the negative pressure device during the main winding phase favors a reduced energy requirement with simultaneously longer service lives and lifetimes of any wearing parts of the system comprising the vacuum device.

Depending on the geometry of the web starts of the partial material webs, the perforations of the cores and / or the perforations of the expansion winding shaft can be arranged parallel to the axis, spirally or arbitrarily aligned and / or along at least one line, in at least one area or as desired. Furthermore, the perforations of the cores and / or the perforations of the expansion winding shaft can have round, oval or polygonal cross-sectional contours. Thus, the possibility is created to be able to offer optimal recording and fixing geometries for every possible geometry of the web beginnings of the partial material webs.

So that the web beginnings of the partial material webs can be produced safely and gently, a web-width perforation or separation unit is preferably integrated in the Anpresstrommel, which is controllable and produce the means in the activated state at least one perforation on the surface of the Anpresstrommel. Moreover, the means of the perforation or separation unit in the non-activated state in a preferred embodiment can be lowered below the surface of the Anpresstrommel so that they exert no effects and influences during the main winding phase.

The means of the perforation or separation unit advantageously comprise a multiplicity of perforation teeth, which are preferably designed such that they indent and perforate the part material webs to be wound up during the perforation into the surfaces of the winding sleeves. Thus, the transfer of the web beginnings of the partial material webs on the cores is favored noticeably.

Furthermore, the device for producing the partial material webs comprises a known and well-proven longitudinal cutting device.

Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

Figur 1

eine schematische Seitenansicht einer Wickelmaschine gemäß einer Ausführungsform der Erfindung;

Figur 2

einen schematischen Längsschnitt durch eine Expansionswickelwelle samt aufgebrachter Wickelhülsen;

Figur 3

einen schematischen Querschnitt durch eine Anpresstrommel gemäß einer Ausführungsform der Erfindung;

Figuren 4.1 bis 4.4

verschiedene schematische Ansichten eines erfindungsgemäßen Perforier- und Kerbmessers; und

Figuren 5.1 bis 5.3

verschiedene Phasen des erfindungsgemäßen Wickelprozesses in schematischen Darstellungen.

Show it

FIG. 1

a schematic side view of a winding machine according to an embodiment of the invention;

FIG. 2

a schematic longitudinal section through an expansion winding shaft together with applied cores;

FIG. 3

a schematic cross section through a Anpresstrommel according to an embodiment of the invention;

Figures 4.1 to 4.4

different schematic views of a perforating and notching knife according to the invention; and

Figures 5.1 to 5.3

various phases of the winding process according to the invention in schematic representations.

FIG. 1 shows a schematic side view of a winding machine 1 for winding partial material webs 3 produced from a material web 2 onto in each case one winding sleeve 4 to a respective winding roll 5 against which a pressure drum 6 is wound during winding.

The material web 2 to be wound up may in particular be a paper or board web. However, other material webs, such as metal or plastic films, can be wound up.

The Anpresstrommel 6 of the winding machine 1 is a merely indicated device 7 for the formatted production of the partial material webs 3 in the direction of L (arrow) of the web 2 upstream. This device 7 comprises a longitudinal cutting device of known type and known operation.

It is also a Tamboureinlegearm 8 is provided which brings a stuffed with winding tubes 4, at least temporarily sucked and perforated expansion winding shaft 9 in a primary scooter 10. The cores 4 are previously pushed onto the expansion winding shaft 9 and thus clamped after expansion. The cores 4 are each provided with a plurality of perforations 13 in their sleeve bodies 12. The winding tubes 4 can be applied, preferably pushed onto the expansion winding shaft 9 in such a way that several, preferably all, perforations 13 of the winding sleeves 4 can be brought into overlap with the perforations 11 of the expansion winding shaft 9 at least partially, preferably predominantly, in particular completely (see FIG.

The expansion winding shaft 9 clamps the applied thereto, preferably deferred winding tubes 4, at least during the Anwickelphase means at least one mechanical, pneumatic or hydraulic expansion device 14.

The primary roller 10 brings by a pivoting movement, the winding tubes 4 in contact with the Anpresstrommel 6 and the Teilmaterialbahnen 3. Both the expansion winding shaft 9 and the Anpresstrommel 6 have suction lines 15, 16 with rotary joints 17, pressure control 18 and a common exhaust (vacuum device) 19th The respective rotary coupling 17 is flexibly connected to the common exhaust 19 and can be connected to the respective axis of the Anpresstrommel 6 and the expansion winding shaft 9 or decoupled.

In the Anpresstrommel 6 a web-width perforation or separation unit 20 is integrated, which is controllable and the means 21 in the activated state at least one perforation line, not shown, on the surface 22 of the Anpresstrommel 6 produce. The means 21 of the perforation or separation unit 20 can be lowered below the surface 22 of the pressure drum 6 in the non-activated state.

Furthermore, on the surface 22 of the Anpresstrommel 6, in particular in the direction of L (arrow) of the web 2 after the perforation or separation unit 20 preferably a particularly high negative pressure to be generated in order to fix the Teilmaterialbahnen 3 regulated on her and separate. The Anpresstrommel 6 is grooved in the extent or smooth and coated if necessary, to possibly influence the quality of winding can.

After changing the reel, the cores 4 are lowered into the main roller 23. The downward movement of the main controller 23 can be regulated Nipdruck or run as a free-winders. Under the main roller 23 is a known and movable traction roller pair 24 is arranged. This can be driven and it can be realized if necessary, large roll diameter similar to a normal carrier roll. The main roller 23 passes in the course of the winding, the load is controlled and regulated to the carrier roll scooter.

After completion of the winding process outside the winding machine 1, the expansion axes 9 are pulled out of the finished wound bobbins 5 and equipped with new cores 4. The finished wound bobbins 5 can then be packaged in a known manner.

FIG. 2 shows a schematic longitudinal section through an expansion winding shaft 9 together with wound cores 4.

The expansion winding shaft 9 has several, acted upon by an expansion device 14, not shown, expansion areas 18, which are formed radially acting. Likewise, the radial perforation 13 is shown in the winding tubes 4 and the expansion winding shaft 9 visible. A possible seal for the vacuum areas is not highlighted. To clarify the principle of operation, an exhaust 19 with rotary coupling 19.2, suction line 16 and exhaust fan (vacuum device) 19.1 is shown.

Furthermore, the expansion winding shaft 9 clamps the winding sleeves 4 applied thereto, preferably at least during the winding phase, by means of at least the mechanical, pneumatic or hydraulic expansion device 14.

Furthermore, the winding tubes 4 can be applied to the expansion winding shaft 9, preferably pushed, that a plurality, preferably all perforations 13 of the winding tubes 4 with the perforations 11 of the expansion winding shaft 9 at least partially, preferably predominantly, in particular completely overlap can be brought. The perforations 13 of the cores 4 and / or the perforations 11 of the expansion winding shaft 9 are generally parallel to the axis, spirally or arbitrarily aligned. Farther they are arranged along at least one line, in at least one area or arbitrarily and / or have a round, oval or polygonal cross-sectional contour.

3 shows a schematic cross section through a Anpresstrommel 6 according to an embodiment of the invention.

In the Anpresstrommel 6 a web width, preferably pneumatically actuated perforation or separation unit 20 is integrated, which is controllable and the means 21 in the activated state at least one perforation 25 on the surface 22 of the Anpresstrommel 6 produce. The means 21 of the perforation or separation unit 20 are lower in the non-activated state below the surface 22 of the Anpresstrommel 6 and they preferably include perforating and notching knife 26. The movement of the perforation or separation unit 20 is indicated by a double arrow.

Figures 4.1 to 4.4 show various schematic views of a perforating and notching blade 26 of the perforation or separation unit 20 according to the invention in a side view (Figure 4.1), a longitudinal view (Figure 4.2), a plan view (Figure 4.3) and a partial sectional view (FIG 4.4).

The perforating and notching knife 26 has, according to the illustrations of FIGS. 4.1 and 4.2, a plurality of knife portions 27 with perforation notches and a plurality of notched pins 28. The knife portions 27 with perforation notches and the grooved pins 28 are, as shown in FIG. 4.3, spaced along a respective line L27, L28 and arranged adjacent to one another.

FIG. 4.4 shows a part of the material web 2 during its severing through the perforating and notching knife 26 of the indicated perforation or separation unit 20. The material web 2 is fixed in the course of its severing in a notch 29 of the winding tube 4.

Figures 5.1 to 5.3 show various phases of the winding process according to the invention in schematic representations.

The illustration of Figure 5.1 shows the laying of the expansion winding shaft 9 on the Anpresstrommel, whereas the illustration of Figure 5.2 illustrates the perforation of the partial material webs 3 of the web 2, the notches of the cores 4 and the subsequent separation of the partial material webs 3 of the web 2. In this case, new beginnings are taken from the expansion winding shaft 9, while the web ends 30 are wound up on the full finished rolls. Particularly important are in each case the prevailing pressure conditions p2, p9 in the Anpresstrommel 2 and in the expansion winding shaft 9, which are high in Figures 5.1 and 5.2.

In the figure 5.2 also still separated from the means 21 material web 30 is shown. And in FIG. 5.3, the normal winding process for the partial material webs 3 of the material web 2 has already begun again.

• Beim Einziehen der Materialbahn 2 wird die Materialbahn 2 kurze Zeit ungeschnitten auf die Expansionswickelwelle 9 aufgewickelt und dann werden die Längsmesser der Einrichtung 7 in den Schnitt gefahren. Daraufhin wird eine neue Expansionswickelwelle 9 mit den entsprechenden Wickelhülsen 4 eingewechselt.

The mode of operation of the winding machine 1 according to the invention can be described with reference to FIGS. 1 to 3 as follows, for example:

• When pulling the material web 2, the web 2 is wound uncut for a short time on the expansion winding shaft 9 and then the longitudinal blades of the device 7 are driven into the cut. Then a new expansion winding shaft 9 is loaded with the corresponding winding tubes 4.

At the time of change, a negative pressure in the pressure roller and the expansion winding shaft 9 is generated and the material web 2 is sucked to the surface of the Anpresstrommel 6 in different thickness to support the separation process. However, the negative pressure is higher at the expansion winding shaft 9 in order to prefer the plant here, without the material web 2 tearing.

Subsequently, the web tension between the pressure roller and the winding roller 5 is increased and also the suction pressure at the surface of the new winding roller 5 is further increased. At the same time the perforation or separation unit 20 is activated in the pressure roller. A perforation of the material web 2 takes place even before the nip of the new expansion winding shaft 9 and the separation of the material web 2 should take place at the latest in the nip. The separated material web 2 is wound on the one hand in the main roller 23 by the air pressure difference and on the other hand the other end will remain on the surface of the winding tube 4 and form a new winding roller 5.

The teeth of the perforation line should be designed such that the tail of the web to be wound is notched into the surface of the winding tube 4. An elastic surface of the winding tube 4, such as polyurethane, and a support sleeve made of metal would certainly be advantageous for the winding quality, as well as a reusability.

If the first separation attempt fails, the outer layers of the finished winding roll 5 are to be waited. This could also apply to the winding core of the new winding roll 5, if the new material web 2 would only partially change over. In the worst case, a new expansion winding shaft 9 would have to be changed with new cores 4.

The wound expansion winding shaft 9 is now moved out in the main roller 23 and the material web 2 waited and fed back into the production process. The new expansion winding shaft 9 is lowered and further wound in the main roller 23 until the next change.

In order to produce larger bobbins 5, below the receiving of the main roller 23 a movable in a horizontal and vertical position support roller pair 24 is arranged to reduce the weight load of the expansion winding shaft 9 and to adjust a winding hardness setting for large roll diameter can. The support rollers 6 can, if necessary, a flexible cover received to further increase the quality of winding. A setting of the winding hardness is independently adjustable and adjustable between pressure roller, main roller holder, the two support rollers 6 and leader or operator side.

In summary, it should be noted that a winding machine of the type mentioned above is improved by the invention such that a roll change can be performed much faster, more reliable and universal.

LIST OF REFERENCE NUMBERS

1

winder

2

web

3

Part web

4

mandrel

5

reel

6

pressure drum

7

Facility

8th

Tamboureinlegearm

9

Expansion winding shaft

10

primary Roller

11

perforation

12

sleeve body

13

perforation

14

expander

15

suction

16

suction

17

rotary joint

18

pressure control

19

suction

19.1

exhaust

19.2

rotary joint

20

Perforation or separation unit

21

medium

22

surface

23

main Roller

24

Carrying roller pair

25

perforation

26

Perforating and notching knife

27

diameter portion

28

Kerbstift

30

tail

L

Running direction (arrow)

L27

line

L28

line

p2

pressure ratio

p9

pressure ratio

Claims (10)

Winding machine (1) for winding material webs (3), in particular paper or board webs, produced from a material web (2) onto in each case a winding tube (4) to a respective winding roll (5) on which a roll (6) is wound during winding, preferably a support roller rests, wherein the roller (6) is preceded by a device (7) for producing the partial material webs (3) in the running direction (L) of the material web (2),
characterized,
that the winding tubes (4) are each provided with a plurality of perforations (13) in their sleeve bodies (11) and
in that the winding tubes (4) can be applied, preferably pushed onto, a perforation expansion winding shaft (9) which can be sucked on at least temporarily, that several, preferably all perforations (13) of the winding tubes (4) with the perforations (11) of the expansion winding shaft (9) at least partially, preferably predominantly, in particular completely can be brought into overlap. Winding machine (1) according to claim 1,
characterized,
in that the expansion winding shaft (9) clamps the winding sleeves (4) applied thereto, preferably at least during the winding phase, by means of at least one mechanical, pneumatic or hydraulic expansion device (14). Winding machine (1) according to claim 1 or 2,
characterized,
that the expansion winding shaft (9) at least during the Anwickelphase the Teilmaterialbahnen (3) on the winding tubes (4) by means of at least one preferably controllable / controllable and preferably detachable vacuum device (19) is aspirated. Winding machine (1) according to one of the preceding claims,
characterized,
that the perforations (13) of the winding cores (4) and / or the perforations (11) of the expansion winding shaft (9) axially parallel, helically or in any orientation. Winding machine (1) according to one of the preceding claims,
characterized,
in that the perforations (13) of the winding sleeves (4) and / or the perforations (11) of the expansion winding shaft (9) are arranged along at least one line, in at least one region or in any desired manner. Winding machine (1) according to one of the preceding claims,
characterized,
that have the perforations (13) of the winding cores (4) and / or the perforations (11) of the expansion winding shaft (9), round, oval or polygonal cross-sectional contours. Winding machine (1) according to one of the preceding claims,
characterized,
in that a roller-width perforation or separation unit (20) is integrated in the roller (6) and the means (21) in the activated state produce at least one perforation line (25) on the surface (22) of the roller (6) , Winding machine (1) according to claim 7,
characterized,
that the means (21) of the perforation or separation unit (20) in the non-activated state below the surface (22) of the roller (6) are lowered. Winding machine (1) according to claim 7 or 8,
characterized,
in that the means (21) of the perforation or separation unit (20) comprise a multiplicity of perforation teeth, which are preferably designed such that they indent the wound partial material webs (3) into the surfaces of the cores (4) during the perforation. Winding machine (1) according to one of the preceding claims,
characterized,
that the device (7) for generating the partial material webs (3) comprises a longitudinal cutting device.

Images