EP3328767A1

EP3328767A1 - Arrangement for winding a web of material

Info

Publication number: EP3328767A1
Application number: EP15770800.9A
Authority: EP
Inventors: Klaus Hasenack; Bernhard Müller
Original assignee: Textilcord Steinfort SA
Current assignee: Textilcord Steinfort SA
Priority date: 2015-07-31
Filing date: 2015-09-24
Publication date: 2018-06-06
Anticipated expiration: 2035-09-24
Also published as: DE202015005443U1; CN107848731B; CN107848731A; WO2017020920A1; EP3328767B1

Abstract

The invention relates to an arrangement for winding a web of material, in particular a web of tire cord fabric, comprising a sleeve-like winding body (1), which can be set into rotation by a shaft coupled thereto, onto which the web of material is wound, and a holding mechanism that is based on a clamping force in order to hold an edge of the web of material to be wound to the winding body at the beginning of the winding process. The winding body (1) is operable for the adjustment of the clamping force caused by means of the shaft coupling.

Description

ARRANGEMENT FOR CREATING A MATERIAL RAILWAY

The invention relates to an arrangement for winding a material web, in particular tire cord fabric web, with a sleeve-like, can be set in rotation by a coupling shaft winding body on which the material web is wound, and based on a clamping force holding mechanism to an edge of the wound material web Start the Aufwickeins to keep the bobbin, and application of this arrangement.

Such arrangements are used, for example, when producing textile fabrics used to reinforce rubber products such as tires, conveyor belts or hoses and, in the course of their manufacturing process, being pulled from a roll, treated and then rewound with such an arrangement. An example of such a method is the so-called dipping in the production of tire cord fabric, in which the textile reinforcing material is coated with an adhesion-promoting latex layer. This happens at the of the Roll withdrawn material before rewinding. The textile fabric is wetted by a dip bath or by spraying with a latex suspension, for example, the resorcinol-formaldehyde-Iatex dip, dried and subjected to a thermo-fixation, and after rewinding the heat-set Reifencordgewebes still subjected to a measure to prevent aging processes For example, by wrapping in a light, air and water-impermeable film.

As a winding body are used for winding tire cord fabrics metal cores, coated with a paper sheath metal cores or cores having a central rectangular opening into which a mating rectangular shaft or adapter is used in positive engagement, which is rotatably driven and the winding body in rotation added.

The use of wood cores is considered to be disadvantageous in US 5,535,961 in terms of low life and due to injury hazards. In this document, it is proposed to form the wound body of a polyethylene material. The ability to be coupled to a rectangular shaft or drive rod is ensured by spacing disks distributed over the axial length inside the cylinder jacket-like polyethylene sleeve, which support the sleeve and have a central rectangular recess into which the shaft can be inserted, as on page 5, rows 12 to 15 of this document is described. The remaining interior is filled after placing end caps with an expanding foam.

A similar shell construction as in US Pat. No. 5,535,961 is disclosed in DE 102 50 955 A1, but with a cylindrical body not of polyethylene, but of metal, on which a paper layer is applied thinly.

In order to hold the tire cord to be wound on the winding body at the beginning of the winding, several techniques are also known. In US Pat. No. 5,535,961 A, an axial groove is formed in the polyethylene sleeve, over which the front edge of the tire cord track is laid, after which a strip which fits the groove is introduced into the groove by means of a rubber hammer. In another nowadays mainly used fastening technology, however, the front end of the web is fixed by means of adhesive slip-free on the winding body, preferably double-sided tapes are used. The invention has for its object to further improve an arrangement of the type mentioned in particular with regard to the Aufwickelqualität and variability.

This object is achieved by the invention in terms of device technology by a development of an arrangement of the type mentioned above, which is characterized essentially in that the winding body is operated by means of the shaft coupling adjustment of the clamping force.

In this way, a simple and slip-free fixing of the material web on the winding body succeeds. In addition, the shaft coupling can synergistically take on an additional function.

The arrangement is preferred for winding material webs in the form of textile fabrics, in particular textile reinforcing materials such as e.g. Tire cord fabrics are designed, which are suitable for reinforcing rubber products. In addition, the arrangement for carrying a wound weight of the wound sheet of 100 kg, preferably at least 500 kg, in particular at least 1000 kg, wherein the arrangement may well carry a weight of 1, 5 1 or more, in particular 2 1.

For this purpose, it is preferably provided that the winding body has an axial length of at least 50 cm, more preferably at least 100 cm, in particular at least 150 cm.

In a particularly preferred embodiment, the winding body has a topological structural property, due to its effective diameter is elastically reversible changeable. The term "effective" diameter takes into account the fact that seen in cross section, the outer contour of the winding body in one or more of its ingestible states no longer necessarily correspond to the perfect mathematical circular shape, so that you use the effective circumference of the outer contour / π as an effective diameter can.

In a particularly preferred embodiment, the topological structure property lies in the opening of the topology of a closed ring. The sleeve-like body thus has at least partially material weakenings in the form of (radially extending) penetrations of the sleeve. It is preferably provided that the opening extends over the full axial length of the winding body. This leaves For example, achieve that the wound body is axially slit during or after it has received its basic shape. With radial, acting from the inside on the inner surface of the sleeve, outward forces, the sleeve can be bent elastically reversible within an elastic deformation range.

Considering the preferred case of extending over the full axial length opening, a gap is thus created through the opening, the gap width is preferably infinitely adjustable by means of the shaft coupling. In a particularly preferred embodiment, this gap width (on the outside of the sleeve) in the unloaded state of the wound body is less than 1 cm, preferably less than 6 mm, in particular less than 2 mm. In addition, the winding body is preferably elastic due to its material / material combinations in a deformation region, in that the gap widens by the mechanism described above to preferably more than 6 mm, more preferably more than 9 mm, in particular more than 12 mm, up to a widening of preferably less than 30 mm, more preferably less than 25 mm, in particular less than 20 mm elastically, so that the basic shape reverts to the basic shape after the Aufbiegekraft has been canceled. The bobbin is when coupling (or at its beginning and still of the production of the clamp) to the shaft in this basic form produced before.

It is then preferably provided that a holding portion of the holding mechanism is at least partially located on the walls of the opening. In one possible embodiment, the material to be wound up could be clamped directly between the two split walls thus formed, for example, by first adjusting the gap to a larger gap width, and then clamping it by reducing the bending force.

However, in another preferred embodiment, the clamping of the material web edge takes place between the opening walls and one or more counterparts (s) of the arrangement inserted into the opening. As a counterpart in a simplest embodiment would be sufficient, for example, an elongated rod which is inserted from the outside into the gap, wherein the rod preferably has an outwardly tapering cross-section. In this case, the inserted into the continuous gap bar by at least 50%, preferably at least 66% of the gap depth (corresponding to the sleeve wall thickness) penetrate, while its outer surface is preferably aligned with the sleeve outer surface. In numbers, this could preferably mean at least a depth of 1 cm. Alternatively, could also have multiple counterparts, for example, shorter Rods are used, it is preferred that the length of a single rod should be at least 20% of the axial sleeve length.

In addition, it is preferred that at least one edging of the opening in its direction of extension deviates from an orthogonal to the winding body outer surface, in particular recedes inwards, preferably by more than 3 °, and preferably by less than 15 °, in particular by less than 12 °. The gap shape is thus at least on one side trapezoidal, in particular a total of trapezoidal. This allows in conjunction with a preferred complementary shape of the mold formed counterpart a reliable clamping, over which a satisfactory winding is ensured.

In a particularly preferred embodiment, the material of the wound body in particular multi-ply glued paper, preferably more than 70%, in particular more than 90%, and in particular consists thereof. The sleeves may consist predominantly of recycled paper, but also new paper can be used. Thus, depending on the logistical organization, on the one hand, it is possible to guide the winding body between tire cord manufacturer and user in a circle and thus to use it several times. However, there is also the possibility of single use, which can be concretely not only economically, but also ecologically more meaningful. In this context, it is preferably provided that the adhesive for gluing the paper layers is a natural product, such as dextrin. In addition, in case of paperboils, surface roughness (for application purposes) and color (for identification purposes) can be easily varied and they are printable. The inventive clamping without adhesive also prevents sticking of paper to the tire cord fabric.

The radial wall thickness of the winding body is preferably at least 8 mm, more preferably at least 12 mm, in particular at least 15 mm. The combination of the above material selection with this wall thickness is considered sufficient to wind web / sheet of the above weights.

It is preferably provided that the arrangement has an expansion clamping shaft for rotationally fixed coupling to the winding body. For this purpose, pneumatically operated expansion clamping shafts are preferably used in a preferred pressure range between 4 and 10 bar. But also mechanical expansion waves are conceivable. In principle, clamping shafts can be used, in which a comprehensive uniform outer diameter increase occurs during their actuation. In a preferred embodiment, the enlargement of the effective diameter by circumferentially spaced clamping bars, of which preferably at least 6, in particular at least 8 are provided. It is preferably provided that the diameter of the expansion clamping shaft in the unexpanded state is preferably in the range between 1 mm and 6 mm, in particular between 2 mm and 4 mm smaller than the inner diameter of the non-elastically stretched bobbin. The length of the radial tensioning path is preferably at least 1%, more preferably at least 2%, in particular at least 3% of the diameter of the unexpanded expansion span shaft, with 5% or even already 4% being sufficient.

In addition, a drive unit can also be provided, preferably with a torque range between 200 Nm and 800 Nm, in particular 400 Nm to 650 Nm.

In a preferred embodiment it is provided that a clamping bar of the expansion clamping shaft in the rotationally fixed coupled state (at least partially) protrudes into the opening. In this variant, the structure of the winding body is matched to the dimension of the tensioning strip system that a secure clamping of the material web by means of the counterpart / the counterparts is still guaranteed. It is thus created a driving in the form of a lock against mutual torsions, so that there is no noticeable Abrief on the sleeve inside due to, for example, a slipping of the expansion tension shaft in the winding body.

In addition to the above-mentioned advantage of the additional function for adjusting the clamping, the expansion tension shaft also offers an advantage in a producible frictional connection of the coupling, via which a high degree of round travel of the winding body can be realized.

The invention discloses at this point also independently and independently of the nature of the holding mechanism and the shape of the bobbin worth protecting an arrangement for winding a material web, in particular Reifencordgewebebahn with a sleeve-like winding body and an expansion clamping shaft for rotationally fixed coupling to the winding body, wherein the expansion clamping shaft is designed to be introduced into the winding body in an unexpanded state and to provide a rotationally fixed connection with the winding body in an expanded state. The advantages of the procedural application of the arrangement are already apparent from the above illustration of the arrangement according to the invention. In a particularly preferred process design, a method is provided for winding a material web, in particular of tire cord fabric, in which a) providing an arrangement according to one of the preceding claims, b) placing the winding body on the expansion tension shaft, c) expanding the expansion tension shaft Winding body widens to a gap of a first circumferential extent, d) introduces the edge of the material web into the gap, and e) by relaxing the expansion tensioning shaft reduces the gap to a second circumferential extent and thereby clamps the material web.

It is provided in step d) in particular that the insertion of the web takes place in the form of a U-loop, within which the or the counterparts are also introduced into the gap. The introduction of the counterparts can be done by appropriate gap widening force-free and especially by hand, but it could also not done (completely) force-free under Werkzeughinzunahme.

In a variant of the method, in the state of the expansion span shaft and the winding body produced in step e), a rotationally fixed coupling between the shaft and the winding body is produced, with the advantages explained above.

A reliable winding succeeds with take-up speeds of preferably greater than 25 m / min, preferably greater than 40 m / min, in particular greater than 55 m / min, but also greater than 70 m / min. Due to the high Aufwickelpräzision enabled by the arrangement according to the invention, but winding can also take place at even higher speeds, namely 120 m / min, even up to or more than 140 m / min, even 160 m / min or higher, preferably not more than 200 m / min is used as take-up speed.

Further features, details and advantages of the invention will become apparent from the following description with reference to the accompanying drawings, the single FIGURE 1 shows a cross-sectional view of an arrangement according to the invention, in which a Reifencordgewebebahn, for illustrative purposes only consisting of a layer R, on the winding body of the Arrangement is wound up.

The arrangement shown in Fig. 1 shows, by the reference numeral 3, an expansion spring shaft which is internally about its central axis via a suitable coupling has a drive, for example via a Benninger adapter 5. The expansion clamping shaft 3 can be coupled here to a drive whose torque is 500 Nm in this embodiment, and can provide a winding speed of up to 200 m / min. The diameter of the expansion crankshaft is 148 mm with a tension between 148.5 mm and 154 mm. The length can be adapted to the existing drive unit on site and otherwise adapted to the length of the bobbin.

The expansion span shaft 3 is a shaft which can be operated pneumatically with an operating pressure of 6.0 bar and has a number of 10 tension bars distributed equidistantly around its circumference. These hold in the state shown in Figure 1 frictionally formed in the form of a cardboard tube made of recycled paper and other types of paper and an outer layer of parchment and / or other types of paper wound body with a length of 1750 mm and outer diameter of 182.4 mm. However, the cardboard tube has no closed ring structure, but is slotted (in the basic form is a slot / gap, for example, a few, here 2 mm before), so that when passing through the clamping path after contact of the clamping bars with the inner diameter of the cardboard tube (here 152.4 mm) a bending of the gap (in the figure at the location of the vertically upwardly expanding clamping bar) takes place. As a result, a rod-shaped counterpart 2, entraining the material web end, can be introduced into the gap. Then, the clamping force can be adjusted to a desired value by slightly reducing the expansion of the expansion span shaft 3.

In this way, it is possible, in particular even at the high winding speeds mentioned, to wind up a tire cord fabric roll weighing 1.8 tons in this embodiment.

The invention is not limited to the details shown in the embodiment. Rather, the particular features of the foregoing description as well as those of the following claims, individually and in combination for the realization of the invention in its various embodiments may be essential.

Claims

1 . Arrangement for winding a material web, in particular a tire cord fabric web, with a sleeve-like winding body (1), which can be wound by a shaft coupling to it, on which the material web is wound, and a holding mechanism based on a clamping force, around an edge of the material web to be wound up at the beginning to keep the winding on the winding body, characterized in that the winding body to the means of the shaft coupling (4) effected adjustment of the clamping force is operable.

2. Arrangement according to claim 1, wherein the winding body (1) has a topological structural property, due to its effective diameter is elastically reversible changeable.

3. Arrangement according to claim 2, in which the topological structural property lies in the opening (6) of the topology of a closed ring.

4. Arrangement according to claim 3, wherein the opening (6) over the full axial length of the winding body (1).

5. Arrangement according to claim 3 or 4, wherein a holding portion of the holding mechanism is at least partially located on the walls of the opening.

6. Arrangement according to one of claims 3 to 5, wherein the clamping of the material web edge between the Offnungsbewandungen and one or more inserted into the opening G egenstück (s) (2) of the arrangement takes place.

7. Arrangement according to claim 6, wherein an axially over at least the width of the material web, in particular over substantially the full axial length of the winding body extending counterpart (2) is provided.

8. Arrangement according to one of claims 3 to 7, wherein at least one edging of the opening in its direction of extension deviates from an orthogonal to the winding body outer surface, in particular recedes inwardly, preferably by more than 3 °, and preferably by less than 15 °, in particular less than 12 °.

9. Arrangement according to one of claims 6 to 8, wherein an opening of an opening face opposite surface of a counterpart / the counterpart is formed in complementary shape to the respective opening wall surface.

10. Arrangement according to one of the preceding claims, wherein the material of the wound body (1) in particular multi-ply glued paper, preferably more than 70%, in particular more than 90%, or consists thereof.

11. Arrangement according to one of the preceding claims, in which the radial wall thickness of the wound body is at least 8 mm, preferably at least 12 mm, in particular at least 15 mm.

12. Arrangement according to one of the preceding claims, with an expansion clamping shaft (3) for rotationally fixed coupling to the winding body (1).

13. Arrangement according to claim 12, wherein the diameter of the expansion clamping shaft (3) in the unexpanded state is preferably in the range between 1 mm and 6 mm, in particular between 2 mm and 4 mm smaller than the inner diameter of the non-elastically stretched wound body (1). ,

14. Arrangement according to claim 12 or 13, wherein a clamping bar (4) of the expansion clamping shaft in the rotatably coupled state projects into the opening.

15. A method for winding a material web, in particular of tire cord fabric, in which a) provides an arrangement according to one of the preceding claims, b) the winding body is placed on the expansion tension shaft, c) by expanding the expansion tension shaft, the opening of the winding body to a gap of a first widening the circumferential extent, d) introducing the edge of the material web into the gap, and e) reducing the gap to a second circumferential extent by relaxing the expansion clamping shaft and thereby clamping the material web.

16. The method of claim 15, wherein the step d) includes the insertion of the material web in the form of a U-loop, in which one / the / the counterpart (s) is also introduced into the gap / are.

17. The method of claim 15 or 16, wherein in the in step e) hergesteilten state of the expansion tension shaft and the winding body, a rotationally fixed coupling between the shaft and the winding body.

18. The method according to any one of claims 15 to 17, wherein the winding at a speed of at least 25 m / min, preferably at least 40 m / min, more preferably at least 55 m / min, in particular at least 70 m / min.