EP0903188B1 - Method and device for coiling wire-shaped rolled stock - Google Patents

Abstract

The rolled product (1) is fed via an entry guide (7) onto a coiling drum (2) rotated at a rate such that its circumferential velocity is equal to the product feed velocity. The clamping gap (6) is opened by a clamping unit (5) for entry of the product end (4) into the gap. After this end is detected by a sensor (9), the gap is closed by the clamping unit. There is also an element (11) for adjustment of the position of the entry guide (7).

Description

The present invention relates to a winding process for wire-shaped rolling stock and a winding device for carrying out the winding process with the in the preambles of the independent claims.

Such a method with the associated device is described in US-A-4 116 394 become known, for example for winding an extruded metal strand.

A method and a device for winding wire-shaped rolling stock are z. B. from the brochure "fine steel reels System Garrett" from SKET known from 1986. According to the prospectus, the rolling stock tip is included "captured". In the prospectus, however, nothing is said about how and with which Means of catching this should happen. Catching the rolling stock tip is however essential to ensure a trouble-free production process.

The invention is therefore based on the object, a winding method and hereby specify corresponding winding device with which the rolling stock tip can be safely caught in the simplest possible way, at the same time a uniform winding of the rolling stock can be guaranteed from the start should.

This task is for the winding process and the winding device by the indicated in the characterizing parts of independent claims 1 and 3 Features solved.

"Transport" has the meaning in the context of the present invention an active, motor-driven transport, as opposed to "feeding", under which, within the scope of the present invention, only perform Guiding elements is to be understood. The rolling stock can of course also be used for feeding be transported if necessary.

Inder axially the clamping device for opening and closing the clamping gap is moved or - correspondingly - the clamping device for opening and closing the clamping gap is axially movable, the design effort to realize the clamping device particularly low. The clamping device can either be by spring force, motorized, pneumatic or also hydraulic be operated.

Due to the fact that the clamping gap runs in a wave shape on the initial circumference is formed, the rolling stock after catching by the clamping device securely wrapped around the initial circumference and cannot go any further into the nip penetration. Since the inlet guide tracks the clamping gap or - corresponding with this - the inlet guide for tracking to the clamping gap a tracking device is assigned, the catching of the rolling stock tip particularly easy.

If the sensor device is designed as a photo cell, the detection of the Rolling tip particularly safe and above all fast.

Fig. 1

eine Wickeltrommel mit einer Klemmvorrichtung von hinten;

Fig. 2

die Wickeltrommel mit der Klemmvorrichtung und eine

-

Einlaufeinrichtung von oben und

Fig. 3

die Wickeltrommel mit der Klemmvorrichtung und der Einlaufeinrichtung von der Seite.

Further details emerge from the following description of an exemplary embodiment. Show:

Fig. 1

a winding drum with a clamping device from behind;

Fig. 2

the winding drum with the clamping device and one

-

Inlet device from above and

Fig. 3

the winding drum with the clamping device and the inlet device from the side.

According to FIGS 1 to 3, a wire-shaped rolling stock 1 - hereinafter also referred to as wire 1 for short - is to be wound on a winding drum 2. The wire 1 is transported at a rolling stock speed v _D.

Before winding, the winding drum 2 has an initial circumference U which results in U = π x D, where D is the initial diameter of the winding drum 2. The winding drum 2 is supported on supports 3. It is driven by a drive, not shown, before the start of winding the wire 1 at a speed n. The speed n is chosen such that the initial peripheral speed v _{U of} the winding drum 2 is equal to the rolling stock speed v _D.

Before winding the wire 1 onto the winding drum 2 can be started, a wire tip 4 of the wire 1 at the Winding drum 2 are attached. For this is on the winding drum 2, a clamping device 5 is arranged which has a clamping gap 6 having. The clamping gap 6 can by moving the axially Clamping device 5 opened in the direction of the double arrow A and getting closed. The movement of the clamping device 5 takes place in the Embodiment electromotive. But there are also others Drive types possible.

The adjustment options for the clamping gap 6 must be two Fulfill conditions: On the one hand, the clamping gap 6 must be as far can be opened that a wire 1 with maximum Wire diameter d can be inserted into the clamping gap 6. To the others, the clamping gap 6 must be closed so far that also a wire 1 with a minimum wire diameter d in the clamping gap 6 is held securely.

To insert the wire 1, the clamping gap 6 is first opened so that the wire 1 with its wire tip 4 in the Clamping gap 6 is insertable. This is shown in FIG 1. thereupon the wire 1 by means of an inlet guide 7 Inlet device 8 fed to the clamping gap 6 and in this threaded. The clamping gap 6 can be used to insert the wire 1 be fully opened. However, this is not essential required. It is sufficient if the clamping gap 6 so far is opened that its gap width is slightly larger than that Wire diameter d.

A sensor device 9 is arranged in the clamping gap 6. in the In the exemplary embodiment, it is designed as a photocell 9. The Sensor device 9 detects whether the wire 1 with its Wire tip 4 is inserted into the clamping gap 6 or not. is if this is the case, the sensor device 9 sends a signal to a Control device, not shown. This then releases the closing of the clamping gap 6. It also gives a start signal to the Inlet device 8 from. This then controls an infeed drive 10, by means of which the wire 1 is transported to the winding drum 2 becomes.

From Figures 1 and 2 it can be seen that the clamping device 5 for Opening and closing the clamping gap 6 is moved axially.

Despite the closing of the clamping device 5, the clamping gap 6 of course not completely closed, since the Wire tip 4 is located in the clamping gap 6. To prevent the slipping Preventing winding wire 1 in the nip 6 runs therefore the clamping gap 6 on the initial circumference U around.

In order to securely grasp the wire 1 despite the oscillation of the To ensure clamping gap 6, the inlet guide 7 is a Tracking device 11 assigned. This is in the embodiment formed as a sliding block 11. Through the tracking device 11 the inlet guide 7 tracks the clamping gap 6 so that always a positional correspondence between clamping gap 6 and Inlet guide 7 is guaranteed.

The winding method described above and the corresponding winding device are suitable for all wire-shaped rolled products. However, they are used particularly advantageously to wind wire at high speed, ie when the rolling stock speed v _{D is} greater than 20 m / s.

Finally, it should also be mentioned that the sensor device 9 also can be arranged outside the clamping gap 6.

LIST OF REFERENCE NUMBERS

1

Rolling / wire

2

winding drum

3

Support

4

wire tip

5

clamping device

6

nip

7

entry guide

8th

inlet device

9

sensor device

10

infeed drive

11

tracking device

A

double arrow

d

Wire diameter

D

Initial diameter

n

rotational speed

U

initial scope

v _D

rolling stock

v _U

Initial peripheral speed

Claims (6)

1. A method of coiling wire-shaped rolled material (1) having a material tip (4),

   wherein the rolled material (1) is supplied with its tip (4) to a coiling drum (2) having an initial circumference (U), the rolled material being supplied thereto via a supply guide (7) at a speed (v_D),

   wherein the coiling drum (2) rotates at an RPM speed (n) selected so that its initial circumferential speed (v_U), which is given by RPM speed (n) and initial circumference (U), equals the speed of the rolled material (v_D),

   wherein a clamping slot (6) of a clamping device (5) disposed on the coiling drum (2) is open so that the rolled material (1) is introduceable into the clamping slot (6) by its tip (4),

   wherein the introduction of the tip (4) is detected by means of a sensor system (9),

   wherein the clamping slot (6) is closed and the rolled material (1) conveyed by the supply guide (7) to the coiling drum (2) once the sensor system (9) has detected that the tip (4) of the rolled material has been introduced into the clamping slot (6),

   characterized in that the clamping device (5) is caused to move axially to open and close the clamping slot (6), that the clamping slot (6) on the initial circumference (U) is configured to be peripherally wave-shaped and that the supply guide (7) is fed toward the clamping slot (6).
2. The coiling method in accordance with claim 1,
   characterized in that the speed (v_D) of the rolled material is greater than 20 m/s.
3. A coiling device for carrying out the coiling method in accordance with claim 1,

   with a coiling drum (2) having an initial circumference (U) and onto which a rolled material (1) having a material tip (4) is adapted to be wound,

   with a clamping device (5) provided with an openable and closable clamping slot (6) being disposed on said coiling drum (2),

   with a sensor system (9) for detecting the rolled material tip (4) within the clamping slot (6), and

   with a supply system (8) for supplying and conveying the rolled material (1) to the coiling drum (2),

   characterized in that the clamping device (5) for opening and closing the clamping slot (6) is axially movable and that the clamping slot (6) on the initial circumference (U) is configured to be peripherally wave-shaped.
4. The coiling device in accordance with claim 3,
   characterized in that the sensor system (9) is configured to be a photocell (9).
5. The coiling device in accordance with claim 3 or 4,
   characterized in that a feed system (11) is assigned to the supply guide (7) for feeding it toward the clamping slot (6).
6. The coiling device in accordance with claim 5,
   characterized in that the feed system (11) is configured to be a slider member (11 ).

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