WO2012093007A1

WO2012093007A1 - Method for producing a green tire

Info

Publication number: WO2012093007A1
Application number: PCT/EP2011/071451
Authority: WO
Inventors: Stefan Linne; Klaus NIEBISCH; Martin Gerighausen
Original assignee: Continental Reifen Deutschland Gmbh
Priority date: 2011-01-04
Filing date: 2011-12-01
Publication date: 2012-07-12
Also published as: DE102011000023A1

Abstract

The aim of the invention is to provide a method in which the cycle time for producing a green tire is reduced. To achieve this, the invention proposes a method that has the following step: j) laterally moving a left and right turn-up bladder (9, 10) against the left and right side-shaping bladder (18, 19) in order to press the sidewalls of the tire against the tire carcass (20). The left turn-up bladder (9, 10) is moved with the belt carrying ring (2) or the left core setting device (3) against the left side-shaping bladder (18), and the right turn-up bladder (10) is moved with the left or the right core setting device (3, 5) against the right side-shaping bladder (19).

Description

description

Method for producing a green tire

The invention relates to a method for producing a green tire.

A large number of patent applications deals with an improvement of the

Construction method of a tire carcass. Currently, green tires are produced on various tire building machines, all of which have their advantages and disadvantages. In principle, tire building machines usually consist of three stations. One station produces the carcass, one station produces the tread / belt package and the third station joins these two components together by cambering the carcass into the belt package.

In particular, in tire building machines that operate on the flat drum principle, a variety of drives are generally necessary to the individual

Move and move machine parts. For the movement of so-called Andrückglocken or Umbuckglocken a separate drive are required in each case. The Andrückglocken have the function, the turnover or beating the

To support side walls during the crowning process. The separate driving of the individual Andrückglocken has the disadvantage that thereby the cycle time for producing a green tire is relatively long.

The object of the invention was to provide a method in which the cycle time for producing a green tire is reduced. Another object is, in particular, to reduce the number of drives for the tire building machine.

The task is solved by a procedure, with the following steps: a) Finishing a belt package with at least one belt layer on one

Belt drum,

b) Inserting a left and right tire cores in a left and right

Core-setting device

c) positioning the left and right core setting devices over one

Carcass drum, wherein at least one carcass insert has already been wound up on the carcass drum,

d) expanding the carcass drum whereby the left and right tire cores are positioned at the predetermined position on the carcass ply,

e) moving the core setting devices into a waiting position,

f) moving the belt package with a belt support ring over the carcass drum, g) merging the tire carcass with the belt package, this

Merging over a Bombiervorgang takes place in which the tire carcass is pressed inside against the belt package,

h) moving the belt support ring into a waiting position,

i) turning up the side walls with crowning bellows to complete the

Tire sidewalls,

j) Lateral process of a left and right Andrückglocke against the left and right Seitenbombierbalg for pressing the tire sidewalls against the

tire carcass,

the left Andrückglocke with the belt support ring or the left

Kernsetzvorrichtung procedure against the left Seitenbombierbalg and the right Andrückglocke is moved with the left or the right Kernsetzvorrichtung against the right Seitenbombierbalg,

k) further processing of the green tire after a conventional

Production method.

An advantage of the invention is to be seen in particular in that

The method according to the invention substantially reduces the cycle time for producing green tires. In addition, the number of drives for the Tire building machine significantly reduced. The two Andrückglocken now no longer have a separate drive, but are on the

Movement of other machine components moved. The left Andrückglocke is especially traversed over the drive of the belt bearing ring. The right Andrückglocke is moved with the drive of the left or right Kernsetzvorrichtung against the right Seitenbombierbalg. Due to the appropriate arrangement of Andrückglocken and the order of the steps, the cycle time is also for

Production of a green tire significantly reduced. The reduction of the cycle time is associated with the fact that individual components do not have to be moved out of the way first in order to be able to carry out the next process step.

In an advantageous embodiment of the invention, it is provided that the left

Andrückglocke is moved over the drive of the Grüteltragesringes.

The left Andrückglocke can be relatively easily coupled with the Gürteltragering.

In addition, this reduces the cycle time for producing a green tire.

In a further advantageous embodiment of the invention, it is provided that the right Andrückglocke is moved over the drive of the left Kernsetzvorrichtung.

The right Andrückglocke can be coupled relatively easily with the left Kernsetzvorrichtung. In addition, the Andrückglocke has to cover only a relatively small way to be moved against the right Seitenbombierbalg.

In a further advantageous embodiment of the invention, it is provided that one or both Andrückglocken are spread apart in the radial direction, whereby the

Andrückglocken can be moved in the open state on the Karkasstrommel. In this way, it is impossible that the Andrückglocke gets into contact with the Karkasstrommel.

In a further advantageous embodiment of the invention, it is provided that the Andrückglocken in step j) in the closed state against the Seitenbombierbälge be pressed. As a result, a uniform contact pressure is exerted on the Seitenbombierbälge.

In a further advantageous embodiment of the invention it is provided that the Andrückglocken are closed or opened by a pneumatic drive in the radial direction. This allows the Andrückglocken with a high

Open and close the speed.

In a further advantageous embodiment of the invention it is provided that the left Andrückglocke is arranged on the right side of the Gürtetragering and the right Andrückglocke on the left side of the right Kernsetzvorrichtung.

In this way, an optimal cycle time for producing green tires is achieved. In a further advantageous embodiment of the invention, it is provided that the

Inserting the left and right tire cores in the left and right Kernsetzvorrichtung in step b) is done with an automated core loader.

This reduces the cycle time for producing green tires. In a further advantageous development of the invention, it is provided that the left and right Kernsetzvorrichtung be brought in step e) on the right side of the carcass drum in a waiting position.

In this way the cycle time is reduced. In a further advantageous embodiment of the invention, it is provided that the

Removal of the green tire from the carcass drum with the Gürteltragering done. As a result, no additional traversing device is required to remove the green tire from the carcass drum. Reference to an embodiment of the invention will be explained in more detail. Show it: Fig. 1: the procedure of the method according to the invention.

FIG. 1 shows a starting position of the method. The whole

Tire building machine is shown schematically in a radial sectional view. On the left side is the belt machine 1 with the belt drum 7. Die

Drum axis 17 represents the drum axis of the belt drum 7 and the carcass drum 13. The belt package 8 of belt and tread is wound with the belt drum 7. Coaxial with the belt drum 7, the belt support ring 2 is arranged, which decreases the belt package 8 and moves to the carcass drum 13.

On the right side of the belt support ring 2, the left Andrückglocke 9 is shown in an open state. The core loader 4 is initially between the left

Kernsetzvorrichtung 3 and the right Kernsetzvorrichtung 5 is arranged. The core loader 4 serves the left tire core 11 and the right tire core 12 to the

Kernsetzvorrichtungen 3 and 5 to pass. On the left side of the left

Kernsetzvorrichtung 3, the right Andrückglocke 10 is arranged, which is also in an open state. On the right is the carcass and

Crowning machine 6 with winding and crowning head shown. The winding and

Crowning head is shown schematically by the carcass drum 13. The left and the right Andrückglocke 9 and 10 are opened and closed by a pneumatic drive, not shown in the radial direction 14. The axial direction 15 indicates the direction of travel in the axial direction.

FIG. 2 shows the method step in which the belt support ring 2 has removed the belt package 8 from the belt drum 7 and moved it to the right in the axial direction 15. At about the same time, the transfer of the left and right tire core 11 and 12 to the corresponding Kernsetzvorrichtungen done.

Fig. 3 shows the process step in which the core loader 4 has already passed the tire cores to the corresponding Kernsetzvorrichtungen and the two

Move Kernsetzvorrichtungen apart in the axial direction 15. FIG. 4 shows the method step in which the core loader 4 has already been moved out of the corresponding machine plane.

FIG. 5 shows the method step in which the two core setting devices 3 and 5 were moved over the carcass drum 13. On the carcass drum 13, the carcass inserts for the tire carcass are already wound up. The winding up of the

Carcass plies are made on a flat carcass drum 13. In a next step, the carcass drum 13 is expanded, whereby the tire cores are positioned at the corresponding position on the tire carcass. The belt support ring 2 is moved parallel to this already in a waiting position next to the carcass drum 13. The two Andrückglocken are still in an open state at this time. With the applicator 16, the carcass ply is rolled onto the carcass drum 13.

FIG. 6 shows the method step in which the applicator 16 has been returned to a waiting position.

The Kernsetzvorrichtung 3 and 5 have the tire cores 11 and 12 already released at this time. FIG. 7 shows the method step in which the core setting devices 3 and 5 have been moved to a waiting position on the right side of the carcass drum. At the same time the belt support ring 2 is moved over the Karkasstrommel 13 to prepare the appropriate Bombiervorgang. FIG. 8 schematically shows the crowning process in which the tire carcass 20 is cambered into the belt package 8.

FIG. 9 shows the process step in which the belt package with the tread is rolled onto the underlying tire carcass. FIG. 10 shows the method step in which the belt support ring 2 on the left next to the carcass drum 13 is moved to a waiting position.

FIG. 11 shows the process step in which the side inflatable bladders 18 and 19 are inflated to thereby seal the sidewalls on the tire carcass 20

high strike. Parallel to this process are the left and the right

Andrückglocke 9 and 10 closed in the radial direction 14. As a result, the Andrückglocken join together to form a closed ring bell. The closed

Ring bell is required to apply a uniform contact pressure on the left and right Seitenbombierbalg 18 and 19 can.

FIG. 12 shows the method step in which the pressing bellies 9 and 10 are moved against the side bumper bellows 18 and 19, thereby completing the beating up of the side walls on the tire carcass 20. The left Andrückglocke 9 is thereby moved by the drive of the belt support ring 2. The right Andrückglocke 10 is fixedly connected to the left Kernsetzvorrichtung 3. As a result, the pressing bell 10 likewise does not have to be moved by way of a separate drive.

FIG. 13 shows the method step in which the belt support ring with the left pressure bell 9 has been moved to the left side of the carcass drum 13. At the same time the Andrückglocke 9 was opened in the radial direction. The left Kernsetzvorrichtung 3 was placed analogously on the right side of the carcass drum 13 in a waiting position.

FIG. 14 shows the method step in which the belt support ring 2 is positioned over the finished green tire 21 in order to remove it from the carcass drum 13.

FIG. 15 shows the process in which the belt support ring 2 removes the green tire 21 from the carcass drum 13. FIG. 16 shows the process in which the green tire 21 with the belt support ring 2 is moved to the left side of the carcass drum 13. The two

Kernsetzvorrichtungen 3 and 5 follow the movement of the Gurttrageringes 2. The figure 17 shows the process in which the green tire 21 has been removed from the belt support ring 2.

FIG. 18 shows the process in which the belt-carrier ring 2 and the core-setting device 3 and 5 are again moved to their starting position. This is followed by a new cycle in which a new green tire is produced.

LIST OF REFERENCE NUMBERS

(is part of the description)

I belt machine with belt drum

2 belt support ring

3 Left core setting device

4 core loaders

5 right core setting device

6 Carcassing and crowning machine with winding and crowning head 7 Belt drum

8 belt package of belt and tread

9 Left pressure bell

10 right pressure bell

I I Left tire core with apex on the core loader

12 right tire core with apex on the core loader

13 carcass and crowning drum

14 Radial direction

15 Axial direction

16 rollers

17 Drum axis of the belt and carcass drum

18 Left side bellows

19 Right side bumper

20 tire carcass

21 green tire

Claims

claims

1. A method for producing a green tire with the following steps:

a) completing a belt package (8) with at least one belt ply on a belt drum (7),

b) inserting left and right tire cores (11, 12) into left and right core setting devices (3, 5),

c) positioning the left and right core setting devices (3, 5) over a carcass drum (13), wherein at least one carcass ply has already been wound on the carcass drum (13),

d) expanding the carcass drum (13) thereby positioning the left and right tire cores (11, 12) at the predetermined position on the carcass ply, e) moving the core setting devices (3, 5) to a waiting position,

f) moving the belt package (8) with a belt support ring (2) over the

Carcass drum (13),

g) merging the tire carcass (20) with the belt package (8), wherein this merging takes place via a crowning process in which the tire carcass (20) is pressed on the inside against the belt package (8),

h) moving the belt support ring (2) into a waiting position,

i) turning up the side walls with crowning bellows (18, 19) to complete the

Tire sidewalls,

j) Lateral method of a left and right Andrückglocke (9, 10) against the left and right Seitenbombierbalg (18, 19) for pressing the tire sidewalls against the tire carcass (20),

wherein the left Andrückglocke (9,10) with the belt support ring (2) or the left

Kernsetzvorrichtung (3) against the left Seitenbombierbalg (18) proceed and the right Andrückglocke (10) with the left or the right Kernsetzvorrichtung (3,5) is moved against the right Seitenbombierbalg (19),

k) further processing of the green tire (21) according to a conventional

Production method.

2. The method according to claim 1,

characterized in that

the left Andrückglocke (9) on the drive of the belt support ring (2) is moved.

3. The method according to any one of the preceding claims,

characterized in that

the right Andrückglocke (10) on the drive of the left Kernsetzvorrichtung (3) is moved.

4. The method according to any one of the preceding claims,

characterized in that

one or both Andrückglocken (9, 10) in the radial direction (14) are moved apart, whereby the Andrückglocken (9, 10) in the open state on the

Carcass drum (13) can be moved.

5. The method according to any one of the preceding claims,

characterized in that

the Andrückglocken (9, 10) in step j) in the closed state against the

Seitenbombierbälge (18, 19) are pressed.

6. The method according to any one of the preceding claims,

characterized in that

the Andrückglocken (9, 10) via a pneumatic drive in the radial direction (14) are closed or opened.

7. The method according to any one of the preceding claims,

characterized in that

the left Andrückglocke (9) on the right side of the belt support ring (2) and the right Andrückglocke (10) on the left side of the right Kernsetzvorrichtung (3) is arranged.

8. The method according to any one of the preceding claims,

characterized in that

inserting the left and right tire cores (11, 12) into the left and right core setting devices (3, 5) at step b) with an automated core loader (4).

9. The method according to any one of the preceding claims,

characterized in that

the left and right core setting devices (3, 5) are placed in a waiting position at step e) on the right side of the carcass drum (13).

10. The method according to any one of the preceding claims,

characterized in that

the removal of the green tire (21) from the Karkasstrommel (13) with the belt tragering (2).