WO2008022833A1

WO2008022833A1 - Method for the production of tire structure components provided with different reinforcing elements in a device

Info

Publication number: WO2008022833A1
Application number: PCT/EP2007/056460
Authority: WO
Inventors: Jörn Seevers; Jens Winkler; Martin Welzhofer
Original assignee: Continental Aktiengesellschaft
Priority date: 2006-08-25
Filing date: 2007-06-28
Publication date: 2008-02-28
Also published as: DE102006039980A1

Abstract

The invention relates to a method for the production of tire structure components provided with different reinforcing elements in a device. In order to provide a method enabling the flexible production of a tire structure component with respect to the parts thereof, the following method is proposed: Providing reinforcing elements in at least two parallel gates (1, 2, n), Feeding individual cords or filaments of a first reinforcing element from a first gate (1, 2, n) to a first extruder head (4, 5), Feeding individual cords or filaments of a second reinforcing element from a second gate (1, 2, n) to a second extruder head (4, 5), Displacement of the first or second extruder head (4, 5) to in front of an extruder (18), wherein the selection of the extruder head (4, 5) is dependent on the tire structure component to be produced and the extruder heads (4, 5) are disposed in positions in relation to the extruder (18) that allow easy replacement, Strip-shaped rubber coating of the reinforcing elements (18), Transfer of the material strip to a subsequent transport device (9) and finishing of the tire structure component.

Description

description

A method of manufacturing tire building components provided with different types of strength members in a device

The invention relates to a method for producing different types of tire reinforcement different tire building parts in a device.

In the standard tire assembly, tire building parts are made in the form of materials with various devices. The production of textile or steel cord reinforced tire building parts is carried out, for example, on various calendering devices. Subsequently, the cutting and splicing of these tire building parts is carried out on subsequent separate devices that are not in communication with the calender. Furthermore, there is a winding and gumming of

Tire cores in turn on separate devices, called core winders.

This conventional approach in the manufacture of tire building components has some disadvantages. Since each tire building part to be manufactured requires its own manufacturing device, this type of tire assembly for small factories and / or small tire numbers is relatively expensive and unfeasible. In addition, a relatively large space requirement for the individual devices is necessary, since for example for steel and textile cord reinforced tire building parts each separate equipment is necessary.

The invention had the object of providing a method by which various tire building parts can be made flexible on a system. The object is achieved by a method for producing tire structural parts provided with different types of strength members in a device having the following steps:

- Provision of reinforcements in at least two parallel gates - Supply of individual cords or filaments of a first type of reinforcement from a first gate to a first extruder head

Supply of individual cords or filaments of a second type of reinforcement from a second gate to a second extruder head,

Method of the first or second extruder head in front of an extruder, wherein the selection of the extruder head depends on the tire building part to be produced and the extruder heads are arranged so as to be easily replaceable in their position relative to the extruder,

- strip-shaped gumming of the reinforcement,

- Forwarding of the material stiffener to a subsequent transport device and completion of the tire building part.

An advantage of the invention is to be seen in particular in that different tire building parts can be produced by the method according to the invention with a high degree of flexibility. With this flexibility, different tire building parts can be manufactured with a single device. As a result, this method is particularly suitable for tire factories with a small production volume. The method allows for flexible production of the individual tire building parts both in terms of their geometry and with respect to different materials. Due to the compact design of the device, this system is also characterized by a small footprint. Another advantage is that the device is modular and also contributes to a reduction of process steps.

In an advantageous development of the invention, it is provided that at least two extruders are provided, wherein both extruders are simply arranged interchangeable, whereby a quick change of rubber mixtures can be realized. In this way, different rubber compounds can be easily and quickly replaced. For example, a steel cord reinforced belt requires a different rubber compound than, for example, a textile bead enhancer.

In a further advantageous development of the invention, it is provided that in the case of the gumming of the reinforcement, a strip of material is produced which is transported on a first conveyor belt for further material processing. At this conveyor belt various devices can be easily positioned, which are needed for further assembly of the tire building part.

In a further advantageous embodiment of the invention, it is provided that after the first conveyor belt a slitter for separating the material strip is arranged in a desired width and producing a Capply tire building part. In this way, the process steps for producing a Capply tire building part are reduced.

In a further advantageous embodiment of the invention it is provided that the Capply strips of material are wound individually on a roll.

In a further advantageous development of the invention, it is provided that a knife for cutting the material strip is arranged above the conveyor belt. With the knife, the material strip is separated by a certain length at a certain angle to the conveying direction of the first conveyor belt.

In a further advantageous embodiment of the invention, it is provided that the cut strips of material are spliced together at the outer edges to form an endless web. The splicing device is thus directly connected to the first conveyor belt, whereby an additional or separate process step is eliminated on a separate system. This second conveyor track is necessary, in particular, for conveying the tire spliced tire component together. The splicing of the material strips can be done either dull or overlapping. In a further advantageous embodiment of the invention, it is provided that the endless web is transported on a second conveyor track and then wound up. The diversity of the tire building parts shows how flexible the device is.

In a further advantageous embodiment of the invention it is provided that the second conveyor track and the knife have a defined angular orientation with respect to the conveying direction of the first conveyor belt.

In a further advantageous embodiment of the invention, it is provided that the continuous web is a tire building part, wherein the tire building part is a belt, a steel insert, a textile insert or a bead reinforcement made of steel or textile.

In a further advantageous embodiment of the invention it is provided that after the first conveyor belt a Reifenenkern- Wickler- device is arranged. With the device according to the invention also different tire cores can be produced.

In a further advantageous development of the invention, it is provided that optionally hexahedrons or ply cores are produced with the tire core winding device. The tire cores can be wound from single cords or filaments (hexa or ply core) or from material strips (ply core).

In a further advantageous development of the invention, it is provided that the first type of reinforcement is a steel cord and the second type of reinforcement is a textile cord. For example, the first gate is equipped with reinforcements from a steel cord, whereas, where the second gate is equipped with strength carrier of individual textile cords.

Reference to an embodiment of the invention will be explained in more detail. Fig. 1 shows an embodiment of the method according to the invention and the underlying device. With the method according to the invention, different tire building parts, such as tire belts and bandages, inserts and bead reinforcements with steel or Textilcordfestigkeitträgern and tire cores, manufacture in a single plant. The system comprises several parallel arranged gates 1, 2 and 3, which are each equipped with different strength members.

The first gate 1 is e.g. filled with steel cord reinforcements and supplies the first extruder head 4 with corresponding individual wires. In the second gate 2 are textile cords, which are passed to the second extruder head 5. Up to n gates 3 and n winding heads can be arranged on the one device.

The gates 1 to n can be equipped with the same as well as with different types of strength members. There are also different or similar material specifications conceivable, eg strength carrier with different cord specifications. Depending on the tire building part to be produced, one of the extruder heads 4 or 5 arranged one above the other moves in front of the extruder 18 and is fastened there, for example, by means of a quick-release device. Thus, every single gate 1 to 3, a corresponding extruder head, z. B. 4 or 5, assigned. In this way, eliminates the costly threading of individual reinforcements in a single extruder head, as is the case with conventional methods for the production of tire building parts. The extruder heads 4 or 5 are supplied via the extruder 18 with a rubber compound 6. Alternatively, another extruder could be located below the extruder 18, which is equipped with a different rubber compound. Depending on the rubber compound with which the corresponding tire building part is to be manufactured, then moves the corresponding extruder either in front of the extruder head 4 or extruder head 5. In this way, time is saved, which is necessary to provide an extruder with a corresponding rubber compound. In the extruder head 4 or 5, the production of strength members provided with tire building parts in the form of strips of material. These rubberized strips of material then pass through a cooling 7 and possibly a storage loop 7 * and then a first conveyor belt 9 supplied. Subsequently, a further assembly of the material strip, depending on what is to be produced for a tire building part. The thickness of the tire treads is adjusted by the thickness of the rubber coating and the diameter of the cord. Furthermore, the density of the individual threads or wires next to each other is set by the spacing of the cords in the extruder head.

In the following, the production of individual tire building parts will be shown.

A so-called capply tire building part can be manufactured with the device as follows.

Single cords or reinforcements in the form of filaments 19 are gummed in the extruder head 4 or 5 to strip material. The slitter 15 is positioned behind the 1st conveyor belt 9 in the 0 ° direction. The strips of material run into the slitter 15 and are separated there into a desired width. The capply tire building parts are then individually wound on the winder 17. Alternatively, a slitter can be dispensed with if the extrusion head or extruder die is designed to produce individual strips of material which have the dimensions of Capply tire building parts.

Various tire components such as tire belts, deposits or carcass layers with

Steel cord reinforcements or textile cord reinforcements and bead reinforcements with steel cord reinforcements or textile cord reinforcements can be made by the method as follows. The strength carrier individual cords or filaments 19 are rubberized with the extruder head 4 or 5 into strips of material. The knife 8 will be according to the desired

Angle positioned for the position of the reinforcement and cuts the strip of material accordingly. Subsequently, the cut strips are spliced into an endless track at the outer ends by means of the device 11 and wound up on the take-up reel 12. In this case, the second conveyor belt 10 can be moved in alignment with the knife 8 at a corresponding angle. Alternatively, it would also be conceivable for the tire belt, the insert and the bead reinforcement to gummieren individual cords or filaments in the extruder head 4 or 5 to strips and then wind up. The strips of material are then but cut to length on the construction machine and spliced to the outer cords.

Tire cores such as e.g. hexa or layer cores can be made by the method as follows.

Reinforcing single cords or filaments 19 are rubberized with the extruder head 4 or 5 and run individually into a core winder 14, which wraps them according to the required core geometry and cuts the cords.

In the production of ply cores, individual cords or filaments 19 are also rubberized in the extruder head 4 or 5 and joined into strips, the number of wires side by side corresponding to the desired core geometry. The strips then run in the layer winder 13, which wraps and cuts them according to the required core geometry. Alternatively, analogous to Hexakern, the ply core of rubberized individual cords are constructed.

LIST OF REFERENCE NUMBERS

(is part of the description)

1 first gate 2 second gate

3 gates n

4 first extruder head

5 second extruder head

6 rubber compound 7 cooling

7 * memory loop

8 knives

9 first conveyor belt

10 second conveyor 11 splicer device

12 take-up device

13 layer core winder

14 hexacle winder

15 slitter 16 material strips

17 take-up device

18 extruders

19 Reinforcements

Claims

claims

Anspruch [en] A method of making tire building components provided with different types of strength members in a device comprising the steps of:

Provision of reinforcements in at least two parallel-arranged gates (1, 2, n)

- Supply of individual cords or filaments of a first strength carrier type from a first gate (1, 2, n) to a first extruder head (4, 5) - supply of single cords or filaments of a second strength carrier type from a second gate (1, 2, n) to a second extruder head (4, 5),

- Moving the first or second extruder head (4, 5) in front of an extruder (18), wherein the selection of the extruder head (4, 5) depends on the tire building part to be produced and the extruder heads (4, 5) in their position to the extruder (18 ) are arranged simply interchangeable,

strip-shaped gumming of the reinforcements (18),

- Forwarding of the material stiffener to a subsequent transport device (9) and completion of the tire building part.

2. The method according to claim 1, characterized in that at least two extruders (18) are provided, wherein both extruders (18) are arranged simply interchangeable, whereby a quick change of rubber mixtures can be realized.

3. The method according to claim 1 or 2, characterized in that in the gumming of the reinforcement (18), a strip of material is formed, which is transported for further material processing by a cooling loop and a storage loop on a first conveyor belt (9).

4. The method according to any one of claims 1 to 3, characterized in that after the first conveyor belt (9) a slitter (15) for separating the material strip can be arranged in a desired width and producing a Capply tire building part.

5. The method according to any one of claims 1 to 4, characterized in that the geometry of the Capply tire building parts is deposited in the geometry of the extruder head.

6. The method according to any one of claims 1 to 5, characterized in that the Capply strips of material are wound in a take-up device (17) individually on individual rolls or in cassettes.

7. The method according to any one of claims 1 to 6, characterized in that above the conveyor belt (9) a knife (8) is arranged for cutting the strip of material.

8. The method according to any one of claims 1 to 7, characterized in that the cut strips of material are spliced together at the outer edges of the extruded strip of material to form a continuous web.

9. The method according to any one of claims 1 to 8, characterized in that the splicing of the cut strips of material can be done both blunt and overlapping.

10. The method according to any one of claims 1 to 9, characterized in that the endless web is transported on a second conveyor track (10) and then wound up.

11. The method according to any one of claims 1 to 10, characterized in that the second conveyor track (10) and the knife (8) have a similar angular orientation with respect to the conveying direction of the first conveyor belt (9).

12. The method according to any one of claims 1 to 11, characterized in that the continuous web is a tire building part, wherein the tire building part is a belt, a liner or a bead-reinforcing member.

13. The method according to any one of claims 1 to 12, characterized in that after the first conveyor belt (9) a Reifenenkern- Wickler- device (13, 14) is arranged.

14. The method according to any one of claims 1 to 13, characterized in that with the Reifenenkern- Wickler- device (13, 14) optionally Hexakerne from single cords or ply cores from individual cords or strips of material are produced.

15. The method according to any one of claims 1 to 14, characterized in that the first strength carrier type and the second strength carrier type consist of different materials or different Cordspezifikationen.

16. The method according to any one of claims 1 to 15, characterized in that when using the same strength carrier different tire building parts are produced by the use of different extruder heads and / or different rubber compounds.

17. A device for producing a tire building part in which a method according to any one of claims 1 to 16 is used.