DD205849A1 - DEVICE FOR THE PARALLEL FEEDING OF REINFORCING ELEMENTS INTO A CALENDAR SLIP - Google Patents

Abstract

DEVICE FOR THE PARALLEL FEEDING OF REINFORCING ELEMENTS IN A CALENDAR SLIP, PREFERABLY OF STEEL COLUMN. THE DEVICE ALLOWS THE INTERRUPTION OF THE CALENDAR PROCESS ON THE BASIS OF AN ALTERNATIVE CHANGE AT ANY TIME CONCERNED AND A SPAETERES OBSERVANCE OF THE REST BASKET WITHOUT PERFORMANCE OF REPRODUCTIVE WORK. OCCUPYING THE KORD IS HIGHLY HIGH QUALITY. WITH THE DEVICE A VOELLIG PARALLEL FIXING OF THE AMPLIFICATION ELEMENTS ON THE LOWER MIXING PLATE, THE COMPLIANCE OF A PARTICULAR FADEN DISTANCE, AND A CONSTANT THREAD TENSION IS PROVIDED. According to the invention, two groove rolls are arranged in parallel to one another at the slightest distance from the take-up frame. THESE ROLLING ROLLERS ARE ASSOCIATED WITH SWIVELING ANDRUCK ELEMENTS. THE MOUNTING FRAME FROM THE RECEIVING FRAME IS POSSIBLE, BY MEANS OF THE ROLLING MACHINE, TO MOVE INTO A CALENDAR SLIP WHERE THE ROLLING ROLL NEXT TO THE CALENDAR IS DIRECT TO A CALENDERED MIXING PLATE OR DEFINED TO A DISTANCE OF APPROXIMATELY 150 MM. THE ENTIRE ENCLOSURE FRAME IS INTERCHANGEABLE WITH THE GUIDE ELEMENTS ROLLER ROLLERS WITH ASSOCIATED ANDRUCK ELEMENTS AND LOADING BAR.

Description

240 34 6 .2

Device for parallel feeding of reinforcing elements into a calendering nip.

At the application area of the invention

The invention "relates to a device for the parallel supply of reinforcing elements in a calendering, preferably steel cord.

C harakt eristik of the known technical solutions

Various technologies are known for producing mixing plates interspersed with reinforcements (in particular steel cord) which run parallel to one another. The accuracy requirements for compound-coated reinforcements increased proportionally with the requirements for increased life, quality and safety of the tire. Accordingly, the range of reinforcing elements used and their changes in the feeding technology due to specific processing properties also changed.

This tendency should be taken into account, especially when processing the steel cord reinforcements

 In doing so, compliance with the parameters is a recurring factor

- Thread tension

- Compliance with a certain thread spacing

- And ensuring the parallelism of the threads to each other, the design and arrangement of FadenfUhrungselemente. Are known FadenfUhrungselemente in which the steel cords pass after leaving the gate a Loohleiste, takes place in the pre-sorting of the threads.

13. ^ 1.1982 * 022008

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Via deflection roller systems or crossbar arrangements or magnetic plates, a partial approximation of the thread tensions is then achieved.

Danaoh go through the threads of a comb, in which the thread guide and the thread spacing are realized via lamellae or pins. So oriented, the threads run over a smooth roller and are fixed on the lower mixing plate. In general, the following shortcomings occur in the case of different arrangement possibilities of these thread guide elements presented to one another:

- Due to the small guided thread length in the axial direction, minimal deflection forces are sufficient to deflect the thread from its prefixed core

- Meohanisohe stresses in production lead to scoring on smooth rolls and defective combs, which in turn adversely affects the distribution of fibers

- If there are too many thread deflections, disturbances occur during the transport of the thread, which become noticeable when the threads in the substitute plate are impressed.

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These shortcomings are still the aspect that can not be processed with this thread guide systems strength of steel cord with helix due to its geometry. For this reason, solutions are known that a groove roller is used instead of the comb and the thread inlet is realized in a plane on the groove roller on a smooth roller. From a certain thread density, however, the filaments interlock and the threads run over each other.To avoid this effect, it is possible to halve the yarn bundle and bring it together at the grooved roll, but the realization of this possibility is very space consuming, since several deflection stations are necessary Another shortcoming of all known methods for covering reinforcing elements with a mixture is that when the calendering process is interrupted and the process has not yet started

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Creel on the basis of a change of assortment, the possibility of a later calendering without new F'ädelarbeiten is not given.

As a result, the calender can not be used optimally and additional labor is tied up.

Object of the invention

The aim of the invention is to develop a device for the parallel supply of reinforcing elements in a calendering gap, in which an interruption of the calendering process due to a change of assortment at any time is possible and allows a later covering of the Restkordes without performing new Fädelarbeiten and in which the covering of the cord takes place in a high quality.

Explanation of the essence of the invention

The object of the invention is to develop a device for the parallel supply of reinforcing elements in a calendering gap, which ensures a completely parallel fixing of the reinforcing elements on the lower mixing plate, the maintenance of a certain thread pitch and a constant thread tension.

According to the invention by a device for parallel feeding of reinforcing elements in a calender nip, which are arranged offset from one another between creel and calender receiving frame, and a Einsohubrahmen with groove rollers parallel to each other at a small distance to the Einsohubrahmen, these groove rollers are swiveled pressure elements assigned , the insertion frame from the support frame by means of hoist in the direction calender nip is movable, wherein the calender closest to the groove roller directly on a calendered mixing plate, or at a defined distance to about 150 mm drüokbar, and the entire drawer frame with the FUhrungselementen, grooved rollers with associated pressure elements as well as Loohlelste is interchangeable.

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The invention will be explained in more detail with reference to exemplary embodiments with reference to drawings.

In the drawings show:

Figure 1: the basic structure of the system Figure 2: the structure of the Eihsohubrahmens with FUhrungselementen

In the initial state "there are at least two coils (i, 2) fitted with coils in a temperature-controlled gate space (3) .These gates are arranged horizontally displaceable and can therefore be moved to the center of the calender.

The perforated plates 5, 6 are expediently rigidly connected to the respective gate 1, 2, so that a synchronous displacement operation of both assemblies is ensured. The loading of the gate with coils takes place in the initial state (FIG. 1). The reinforcing elements are then threaded through the perforated plate and guided to the insertion frame 9,10, which is located in the axial extension of the respective gate, stored on a receiving frame 7,8. The insertion frame (Figure 2) consists essentially of the FadenfUhrungselementen perforated strip 11 and at least one grooved roller 13,14, as well as Andruckleisten or pressure rollers 18,19. The reinforcing elements are prefixed axially after the threading through the perforated strip on the respective groove of the grooved roller. The arrangement of two grooved rolls which are offset from each other in height, the wrapping conditions make favorable, so that a comb 15 is sufficient to clamp the reinforcing elements, without having to accept a loss of thread tension in purchasing. Thus, the reinforcing elements remain fixed in the grooves until the threading process is completed and slipping out of the grooves is prevented by pressing strips or rollers.

In order to make it easy to control the retraction of the reinforcing elements into the cage, a press 16 is activated by a press

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Runner vulcanized to the beginning. This vulcanizing device is displaceable in two directions parallel to the calender rolls.

A lifting device 4- provides for the transport of the drawer frame to the calender and pushes it into the mounting frame, which is rigidly attached to the calender.

After the rotor has retracted and the calendering process has begun, the pressure rollers on the grooved rollers are allowed to be swiveled in until a balanced thread tension has formed over the entire spectrum of reinforcements and no more threads pass through.

Thus, slipping out of the reinforcing elements is prevented from the grooves. The same mechanism of Andrückeollen then ensures in the last phase of evidence that the first reinforcing elements of idler coils still run with a safe thread tension in the calender nip and thus material is saved.

The drawer frame is suitably designed so that the calender roll 17 closest to the groove roller can be pressed by means of stops 20 directly to the calender roll or positioned at a certain distance from her. The adjustment range is preferably 0-100 mm. As a result, the optimum entry of the reinforcing elements onto the lower calendering roller can be ensured in accordance with previously determined setting values.

While the calender is running, a second gate can be prepared independently in the same way.

Since the frame change is performed compactly in a kind of cassette shape, this results in a considerable time savings. Post-sorting of reinforcing elements on the grooved roll is eliminated in the technology presented.

This feeding method of the calender also has the great advantage that the calendering process can be interrupted at any time and a range change by the second prepared gate is possible.

The reinforcing elements of the old coil regime, which has not yet reached idling, can be fed to the calender at any time after a new rotor has been attached to the ends.

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since the reinforcing elements remain firmly fixed in the grooves of the grooved roll after the calendering process has ended.

A further advantage of designing the thread guiding elements as grooved rolls is that strength beams of different cross sections can be processed. Specifically, this applies to steel cord with helix too.

Claims (1)

240346 2 Erfindungsanspruoh Device for the parallel supply of Verstärkungseleraen- th in a calender nip consisting of a creel and calender arranged Aufnahmege a part and a slide-in frame with grooved rollers and perforated strip as guide elements ", characterized in that two groove rollers (13,14) offset parallel to each other in small distance to the slide-in frame (9,10) are arranged, these groove rollers (13,14) are assigned pivotable pressure elements (18,19), the slide-in frame (9,10) of the receiving frame (7) is movable by means of hoist in the direction calender nip wherein the groove roll (13) closest to the calender is drüokbar on a calendered mixture plate directly, or at a defined distance to about 150 mm, and the entire insertion frame (9,10) with the FUhrungselementen, groove rollers (13,14) associated with Pressure elements (18,19) and loch bar (11,12) is designed interchangeable. For this JLSeiten drawings 13JIIL.1982 * Ü22OO.