EP3036180B1 - Hem winder for strip-shaped material - Google Patents

Description

The invention relates to a hem winder according to the preamble of claim 1.

Trimming shears are usually used in belt treatment plants in order to cut the treated strips in width to specific finished dimensions. Such bridles are usually in the outlet part of the belt treatment plants, these scissors may be formed according to the prior art as Kreismesserbesäumscheren. The seam processing takes place either via scrap or hem presses, seam cutters or reel devices in the form of so-called hem winder.

Conventionally known Saumpressen have the disadvantage that they are structurally complex and therefore expensive.

As an alternative to hem presses, the use of hem cutters is possible. However, these devices are subject to the disadvantage that they are prone to failure especially at high tape speeds and relatively thin tapes.

So-called hem waders have proved to be an unproblematic and inexpensive alternative to the winding of strip material, especially in so-called cold-rolled continuous-contact systems.

DE 25 51 506 A1 shows a hem winder for winding after falling along the longitudinal trimming of a strip at the strip edges hem strip, in which a winding mandrel protrudes from one side into a winding segment or in a winding chamber and is cantilevered. Such storage of the winding mandrel is critical for high speeds. Another disadvantage is that by the use of only one winding mandrel whose travel for withdrawal from the winding chamber is comparatively long, so that from this results in a long idle time for ejecting a skirt.

EP 0 431 280 P1 shows a hem winder in the form of a winding machine for strip-shaped material, in particular for a fringing strip arising during the trimming of strips. In this winding machine side windows are provided, which limit or define the area in which the belt is wound on a winding mandrel in a winding chamber. The side windows are rotatably mounted and driven. However, the distance of the side windows is not variable to each other, so that jamming or the like may occur when ejecting a finished wound hemisphere.

A generic hem winder is out DE 28 44 882 A1 known, this hem winder in the FIGS. 9 and 10 each shown in a side view, with apart driven mandrels or with converged mandrels. As shown by FIG. 10 let the free end faces of the two mandrels bring in juxtaposition, so that in this winding segment band material can be wound on the mandrels. When a hem bale is finished wound on the mandrels, so it can be removed from the hem winder suitably when the two mandrels as in FIG. 9 shown apart.

The drive of the seam winder according to DE 28 44 882 A1 via a motor, which cooperates via a gear with one of the two mandrels. The other of the two mandrels is unpowered and is set in rotation when brought into contact with the opposite driven mandrel via its free end face. The two mandrels are each cantilevered and axially adjustable via adjusting cylinder relative to a base frame of the hem winder. This construction has the disadvantage that the mandrels for high belt speeds, especially in Continuous annealing systems for fine tape may occur, are only partially suitable, so that a mechanical stability is not sufficiently ensured during the winding process. Furthermore, by means of the adjusting cylinder, an axial displacement of the mandrels with only limited speed is possible, so that the so-called secondary time for ejecting a finished wound up hemstitch can not be shortened sufficiently.

WO 2009/048407 A1 shows a generic seam winder according to the preamble of claim 1.

Accordingly, the invention has for its object to provide a hem winder, with a reliable winding of hem balls at high speeds and ejection of hem bales with short non-productive times is possible.

This object is achieved by a seam winder with the features of claim 1. Advantageous developments of the invention are defined in the dependent claims.

In the context of the present description, the term "coaxial" in the sense of "aligned" to understand.

A seam winder according to the invention is used for processing strip-shaped material, in particular for hem strips, which fall off at the longitudinal trimming of a strip at the strip edges, and comprises two winding mandrels rotatably mounted about their longitudinal axis, which are arranged coaxially with one another in their longitudinal axis and can each be displaced axially relative to each other , And a winding segment, in which the respective free end faces of the mandrels can be brought in opposition. Both winding mandrels are mounted on a displaceable relative to a base frame of the hem winder Verschiebeuntersatz.

The winding segment is delimited by opposite side walls, which are arranged parallel to one another in an operating position of the hem winder and can be pivoted laterally outwards in a removal position for a hem bale of the band-shaped material. As a result, a funnel-shaped removal opening for the hem ball forms with a generous opening path, so that jamming of a finished wound hem bar is effectively prevented during its expulsion from the hem winder.

The invention is based on the essential finding that the storage of a respective winding mandrel takes place on a separate displacement base, which can be moved relative to the base frame with high speed and high precision, namely in the direction of the winding segment or away from the winding segment. By this displacement of a displacement pedestal relative to the base frame of the hem winder at high speed, short non-productive times can be achieved in order to eject a ready-wound hem ball. The separate sliding support for the storage of a respective winding mandrel also allows robust rolling bearings for the winding mandrel, so that it is possible to realize high speeds of rotation for the winding mandrel with high reliability.

In an advantageous not claimed embodiment of the invention, a winding mandrel is mounted on its associated sliding base by two storage facilities. Here, the two storage facilities to each other on a bearing distance corresponding to at least 40% of the axial length of the winding mandrel. Preferably, this bearing distance corresponds to at least 50% of the axial length of the winding mandrel. This comparatively large bearing distance of the two bearing devices to one another enables a robust and stable mounting of a winding mandrel, especially at very high speeds, which is advantageous for the reliability and at the same time to a uniform winding quality.

In an advantageous not claimed embodiment of the invention, both winding mandrels can be driven by a respective separate drive unit. This means that a separate drive unit is provided per winding mandrel. This makes it possible to quickly overcome the inertial forces of the mandrels after a standstill of the hem winder and to approach the hem winder in a short time or to bring the mandrels to a desired speed. In this context, it should be noted that the two mandrels are not positively connected to each other with their free end faces. This makes it possible that the mandrels may have a slightly different speed compared to each other, which can be dispensed with a synchronization of the two drive units.

In an advantageous not claimed embodiment of the invention, a drive unit for a respective winding mandrel may be mounted on the correspondingly associated displacement base of a winding mandrel. This has the consequence that a distance or the position of a drive unit to the respectively associated winding mandrel in an opening or closing of the seam winder when the Verschiebeuntersätze be moved relative to the base frame, not changed. In that regard, for the hem winder invention, the use of a costly and error-prone telescopic coupling, the DE 28 44 882 A1 is known and compensates for a change in distance between a mandrel and an associated drive unit, not required.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

The invention is illustrated schematically below with reference to preferred embodiments in the drawing and will be described in detail with reference to the drawings.

Figur 1

eine vereinfachte Seitenansicht eines erfindungsgemäßen Saumwicklers, wobei dessen Wickeldorne sich in einer Betriebsposition zum Aufwickeln von Bandmaterial befinden,

Figur 2

eine Seitenansicht des Saumwicklers von Figur 1, wobei dessen Wickeldorne auseinandergefahren sind und sich in einer Entnahmeposition für den Saumballen befinden,

Figur 3

eine vereinfachte Teilansicht des Bereichs I von Figur 1,

Figur 4

eine vereinfachte Teilansicht der gegenüberliegenden Stirnseiten der beiden Wickeldorne in der Entnahmeposition gemäß Figur 2,

Figur 5

eine vereinfachte Draufsicht eines erfindungsgemäßen Saumwicklers nach einer weiteren Ausführungsform,

Figur 6

eine vereinfachte seitliche Querschnittsansicht eines Wickelsegments des erfindungsgemäßen Saumwicklers in einer Betriebsposition,

Figur 7

eine vereinfachte Seitenansicht eines Wickelsegments des erfindungsgemäßen Saumwicklers in einer Entnahmeposition, und

Figur 8

eine Querschnittsansicht entlang der Linie A-A von Figur 1 bzw. entlang der Linie B-B von Figur 5.

Show it:

FIG. 1

a simplified side view of a hem winder according to the invention, wherein the mandrels are in an operating position for winding strip material,

FIG. 2

a side view of the seam winder of FIG. 1 whose winding mandrels have moved apart and are in a removal position for the hem bale,

FIG. 3

a simplified partial view of the area I of FIG. 1 .

FIG. 4

a simplified partial view of the opposite end faces of the two mandrels in the removal position according to FIG. 2 .

FIG. 5

a simplified plan view of a seam winder according to the invention according to a further embodiment,

FIG. 6

2 a simplified lateral cross-sectional view of a winding segment of the hem winder according to the invention in an operating position,

FIG. 7

a simplified side view of a winding segment of the hem winder according to the invention in a removal position, and

FIG. 8

a cross-sectional view along the line AA of FIG. 1 or along the line BB of FIG. 5 ,

FIG. 1 shows a simplified side view of a hem winder 10 according to the invention. The hem winder 10 comprises two about its longitudinal axis 12 rotatably mounted mandrels 14, 15 which are arranged in its longitudinal axis 12 coaxial with each other and each can be moved axially to each other. The hem winder 10 further includes a winding segment 16, below referred to as a winding box, in which the respective free end faces 18, 19 of the two winding mandrels 14, 15 can be brought into juxtaposition.

The hem winder 10 has a base frame 20. This base frame 20 is preferably formed in one piece and accordingly has an excellent rigidity for absorbing weight and / or operating forces. The mandrels 14, 15 are each received on a separate displacement base 22, 23 mounted, wherein the sliding pedestals 22, 23 via roller means 24 relative to the base frame 20 axially in the direction of the winding box 16 and away from it can be moved. For this purpose, actuating cylinders 26 are provided, which are attached on the one hand to the base frame 20 and on the other hand to the sliding bases 22, 23. By an actuation of these actuating cylinders 26, the sliding pedestals 22, 23 are reciprocated relative to the base frame 20, as in FIG. 1 indicated by double arrows. By means of a bearing of the displacement substructures 22, 23 on the base frame 20 by means of the roller devices 24 it is ensured that weight and / or operating forces can be derived in a simple and structurally robust manner from the sliding bases 22, 23 in the base frame 20.

The winding mandrels, 14, 15 are mounted on their respective displacement base 22, 23 supported by two storage facilities, namely by a movable bearing 28 and a fixed bearing 30. The floating bearing 28 and the bearing 30 are spaced from each other by a bearing distance x. In this regard, it may be pointed out that the bearing distance x corresponds to at least 40% of an axial length of a respective winding mandrel 14, 15, the bearing distance x preferably corresponding to at least 50% of the axial length of a winding mandrel.

Each of the two winding mandrels 14, 15 is coupled to its own drive unit 34, 35, which is mounted on the corresponding displacement base 22, 23 of a respective winding mandrel 14, 15. The drive units 34, 35 are in this case firmly on the sliding bases 22, 23 positioned so that a distance of these drive units 34, 35 to the mandrels 14, 15 is immutable. With an axial displacement of the sliding pedestals 22, 23, the drive units 34, 35 are moved together with the mandrels 14, 15.

The drive units 34, 35 serve to rotationally drive the mandrels 14, 15 about their longitudinal axes 12. By the above-mentioned bearing distance x between the movable bearing 28 and the fixed bearing 30, the mandrels 14, 15 are driven at high speeds without disturbing Umwuchten or the like occur.

The hem winder 10 is in FIG. 1 shown in an operating position in which the free end faces 18, 19 of the mandrels 14, 15 are brought into juxtaposition in juxtaposition. This is also in FIG. 3 1, which is an enlarged view of area I of FIG FIG. 1 shows. Herein it can be seen that the free end face 18 of the winding mandrel 14 is conical convex. Complementarily, the free end face 19 of the winding mandrel 15 is conically concave, so that the conically convex end face 18 engages in the conically concave front side 19. In addition, the conically concave front side 19 is formed serrated in its edge region. If the winding mandrels 14, 15 are moved towards each other by a method of the sliding pedestals 22, 23, strip material may by the in FIG. 3 illustrated operating position of the mandrels 14, 15 are clamped therebetween, to subsequently by rotation of the mandrels 14, 15 about its longitudinal axis 12 on the mandrels 14, 15 to a hem bale 11 (see. FIG. 1 ) to be wound up. In this context, it should be noted that the end faces 18, 19 of the mandrels 14, 15 in the operating position according to FIG. 1 respectively. FIG. 3 are not positively connected with each other. This makes it possible that the drive units 34, 35 have a low speed difference, which then between the non-positively connected end faces can be compensated suitably. This has the consequence that a rotational speed synchronization between the two drive units 34, 35 is not required.

In FIG. 2 the hem winder 10 is shown in a so-called removal position, in which the displacement sub-sets 22, 23 in each case by a travel v, the in FIG. 1 symbolized above the winding box 16, are moved to the outside. As a result, the free end faces 18, 19 of the winding mandrels 14, 15 spaced from each other, which in the illustration of FIG. 4 is illustrated. In this removal position of the hem winder 10, it is possible to eject a finished wound hem bale 11 from the winding box 16 or to remove what is in FIG. 1 is illustrated by the arrow R.

FIG. 5 shows a simplified plan view of a hem winder 10 according to the invention according to a further embodiment. In comparison to the example too FIG. 1 are the same features provided with the same reference numerals herein. In contrast to the embodiment of FIG. 1 are in the hem winder 10 according to FIG. 5 the drive units 34, 35 arranged axially parallel to the respective mandrels 14, 15 and thereby suitably mounted on the sliding bases 22, 23. A power transmission from the drive units 34, 35 to the respective mandrels 14, 15 is ensured in each case via a front side gear 36. The axis-parallel arrangement of the drive units 34, 35 as shown by FIG. 5 leads compared to the embodiment of FIG. 1 to the advantage that a total length of the sliding sub-bases 22, 23 in the direction of the longitudinal axis 12 of the mandrels 14, 15 is smaller. This is expressed by the relationship I ₂ <I ₁ , where I ₂ or I ₁ symbolizes a total length of the displacement subset 22, 23 in the direction of the longitudinal axis 12 of the mandrels 14, 15 (cf. Fig. 2 . Fig. 5 ). In this regard, it may be pointed out that the drawings in Fig. 2 and Fig. 5 not to scale.

The embodiment according to FIG. 5 is shown in an operating position in this illustration, when the two winding mandrels 14, 15 are brought with their free end faces in the winding box 16 in juxtaposition and on a hem bale 11 is wound up. In this regard, it is understood that the embodiment according to FIG. 5 in the same way as in FIG. 2 shown in a removal position can be transferred, in which the winding mandrels 14, 15 are moved away from each other to eject a finished wound hem bale 11.

Alternatively to the representation of FIG. 5 an axially parallel arrangement of the drive units 34, 35 can also be designed in addition to the mandrels 14, 15 to the effect that the drive units are arranged above or below the winding mandrels and are suitably fastened to the displacement bases 22, 23. This leads to the further advantage that the sliding bases 22, 23 require less installation space in their width.

The winding box 16 is bounded laterally by side walls 38, 39. In the FIGS. 6 and 7 are constructive details with respect to these side walls 38, 39 explained, in the removal position of the hem winder 10 (see Fig. 2 ) to allow a funnel-shaped opening of the winding box 16 for a jamming-free ejection of the hem bale 11.

FIG. 6 shows a simplified side cross-sectional view of the winding box 16 together with the two side walls 38, 39 which are each pivotally mounted on a pivot bearing 40. The side walls 38, 39 each have a passage opening 42 through which the mandrels 14, 15 can be guided into the winding box 16. For the sake of simplicity, the mandrels 14, 15 in the FIGS. 6 and 7 Not shown.

On the two side walls 38, 39 each rotatably mounted flanged wheels 44, 45 are mounted, the storage of a flanged wheel is ensured by a suitable roller bearing 46. The flanges 44, 45 face an interior of the winding box 16 and thus limit this interior. In accordance with the side walls 38, 39, the passage openings 42 are also formed in the flanged wheels 44, 45, as explained, the winding mandrels 14, 15 thereby process into the winding box 16 into it.

On the side walls 38, 39 drives in the form of an electric motor 50, 51 may be provided, with which the flanged wheels 44, 45 are rotationally driven about a longitudinal axis L of the hem winder 10. In this regard, it is understood that the direction and speed at which the flanges 44, 45 are driven by the electric motors 50, 51 are chosen in accordance with the driving direction and speed of the mandrels 14, 15. As an alternative to the electric motors 50, 51, it is also possible to couple the flanged wheels 44, 45 to the drive units 34, 35 in order to ensure a synchronous drive in accordance with the winding mandrels 14, 15.

In FIG. 6 the side walls 38, 39 are shown in an operating position of the hem winder 10, in which the flanged wheels 44, 45 are aligned substantially parallel to one another. In this operating position, strip-shaped material is wound into a hem bale 11 on the mandrels 14, 15. In FIG. 7 the side walls 38, 39 are shown in a removal position of the Daumwicklers 10, in which the two side walls 38, 39 are pivoted about the pivot bearings 40 to the outside, that their free ends 48, 49, which are opposite to the pivot bearings 40, to the outside of the winding box 16 are moved away. In this regard, it should be understood that prior to pivoting the side walls 38, 39 outwardly, the mandrels 14, 15 have been moved away from the winding box 16 by a displacement of the slide bases 22, 23 such that the free ends of the mandrels 14, 15 are out of the through holes 42 are moved out.

FIG. 7 illustrates that in the removal position, the two free ends 48, 49 each have moved away from the base frame 20 by the distance y, so that in each case a gap opening with the distance s forms between a lateral edge of the hem bale 11 and the flanged wheels 44, 45. Thus, the distance of the opposing flange plates 44, 45 opens funnel-shaped in the direction of the ejection direction R, this arrangement ensures a stable, low-vibration attachment of flanges 44, 45 by means of the side walls 38, 39 on the base frame 20 at the same time generous opening.

To clarify further details of the winding box 16 shows FIG. 8 a cross-sectional view along the line AA of FIG. 1 or along the line BB of FIG. 5 , Adjacent to the winding mandrels 14, 15 or to a hem bale 11 wound thereon, a pressure roller 52 is provided, which can be moved by a pressure cylinder 54 in the direction of the hem bale 11. By the pressure roller 52 a uniform and homogeneous winding of strip material is ensured. Below the mandrels 14, 15 an ejector flap 56 is provided, which is coupled to an ejection cylinder 58. The ejection flap 56 has the purpose that therein a hem bale 11 is collected when the two mandrels 14, 15 have been moved laterally out of the winding box 16. The winding box 16 is on its front side between the two side walls 38, 39 closed by a pivotable flap device 60. The flapper 60 is in FIG. 8 shown by a thick solid line in its closed position. For ejecting a ready-wound hemisphere, the flap means 60 can be opened and the ejection flap 56 can be lowered down by an operation of the ejection cylinder 58 (in FIG FIG. 8 each shown by dashed lines), so that consequently the hem bale 11 is ejected from the winding box 16. For this purpose, the base frame 20 below the winding box 16 has a recess 32 to facilitate ejection of the hem bale 11.

The invention now works as follows:

Ribbon-shaped material is fed into the winding box 16 from above from a direction Z (cf. Fig. 6 . Fig. 8 ). In this case, the winding mandrels 14, 15 are brought into juxtaposition with their free end faces 18, 19 by a corresponding method of the displacement substructures 22, 23, so that the band-shaped material is detected between the two free end faces 18, 19. Subsequently, the winding mandrels 14, 15 are set in rotation by the drive units 34, 35, so that the band-shaped material is wound onto the winding mandrels 14, 15 to form a hem bale 11. Here are the side walls 38, 39 in their operating position, such as in FIG. 6 shown. By simultaneously driving the flanged wheels 44, 45 in synchronism with the winding mandrels 14, 15 jamming of the strip-shaped material 11 on the side walls of the winding box 16 is effectively prevented.

Once a hem bale 11 is finished wound in the winding box 16, the mandrels 14, 15 are pulled out by moving the sliding sub-assemblies 22, 23 in a short time from the winding box 16 and then the side walls 38, 39 pivoted about the pivot bearing 40 to the outside. As a result, the hem ball 11 falls down onto the ejector flap 56. By opening the flapper 60 (see FIG. FIG. 8 ) and a lowering of the ejection flap 56 is the hem ball 11 in the direction R (see. FIG. 1 . FIG. 7 ) ejected from the winding box 16. Subsequently, by transferring the components of the hem winder 10 back into the respective operating position, further strip-shaped material can be wound up into a new hem bale 11.

LIST OF REFERENCE NUMBERS

10

Saumwickler

11

Hem ball / band-shaped material

12

Longitudinal axis (the mandrels)

14, 15

mandrels

16

Winding segment / winding box

18, 19

Free end faces of the mandrels

20

base frame

22, 23

Sliding pedestal

24

roller device

26

actuating cylinder

28

movable bearing

30

fixed bearing

32

recess

34, 35

Drive unit (s)

36

Front side gear

38, 39

side walls

40

pivot bearing

42

Through opening

44, 45

flanged wheels

46

roller bearing

32

recess

48

Free ends of the side walls

50, 51

Electric motor (s)

52

capstan

54

pressure cylinder

56

discharge flap

58

out cylinder

60

Valve device

L

Longitudinal axis of the seam winder 10

Claims (5)

1. Edging-strip winder (10) for strip-shaped material, particularly for edging strips left over when longitudinally trimming a strip (11) at the strip edges, comprising
   two winding mandrels (14, 15), which are mounted to be rotatable about the longitudinal axes (12) thereof and arranged coaxially relative to one another by their longitudinal axes (12) and which are respectively axially displaceable relative to one another and
   a winding segment (16) into which the respective free ends (18, 19) of the winding mandrels (14, 15) can be brought into juxtaposition, wherein the two winding mandrels (14, 15) are mounted so as to be borne on a displacement base (22, 23) displaceable relative to a base frame (20) of the edging-strip winder (10),
   characterised in that
   the winding segment (16) is bounded by opposite side walls (38, 39), which are arranged parallel to one another in an operating position of the edging-strip winder (10) and are pivotable laterally outwardly into a removal position of an edging-strip roll (11) of the strip-shaped material so that a funnel-shaped removal opening for the edging-strip roll (11) arises.
2. Edging-strip winder (10) according to claim 1, characterised in that respective passage openings (42) are formed in the side walls (38, 39), wherein the winding mandrels (14, 15) in the operating position of the edging-strip winder (10) are guided through the passage openings (42) and in that case protrude into the winding segment (16).
3. Edging-strip winder (10) according to claim 1 or 2, characterised in that a rotatably mounted flanged wheel (44, 45) facing an interior space of the winding segment (16) is mounted on at least one side wall (38, 39).
4. Edging-strip winder (10) according to claim 3, characterised in that the flanged wheel (44, 45) is driven in the winding direction of the strip-shaped material (11).
5. Edging-strip winder (10) according to claim 4, characterised in that the flanged wheel (44, 45) has an individual drive or is coupled with the drive of the respectively associated winding mandrel (14, 15).

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