DD208307B1 - WINDING PLATE FOR A WRAPPING MACHINE WITH VERTICAL WINDING AXLE FOR WRAPPING FINE STEEL - Google Patents

Description

For this 2 pages drawings

Field of application of the invention

The invention relates to a reel disc for a winding machine with a vertical winding axis for winding of fine steel in coiler lines of rolling mills.

Characteristic of the known technical solutions

According to DD-PS 71086 and DD-PS 88067 winding machines are known in which the rolling passes through a guide tube or laying tube with sliding guides (mouthpiece) in the field of catching or gripping tools (catch bolt, gripping flange).

The wrapping floor vertically arranged winding arms are either clamped hydraulically on the Tellerhubvorrichtung or collapsible equipped with eccentric bearings. From the roll plate of the rolling ring is deported.

The disadvantages of the solutions mentioned in the prior art are as follows:

Fangboizen to DD-PS 49590 and DD-PS 88067 have not been successful because the Walzgutspitze was not taken reliably by them when entering the rolling stock in the winding basket.

The tailboard according to DD-PS 71086 and DD-PS 88067 has about the inner diameter of the winding space limitation, whereby when catching the rod tip of the winding diameter for the first three to five turns larger than the resulting ring outer diameter, which to avoid the sliding of turns on Cooling jacket must be much smaller than the inner diameter of this. The catching of the rod end within the gripping board according to DD-PS 71086 is practically not feasible. The increased initial turns have faster cooling than the compact ring, resulting in higher tensile strength and less necking in some steel brands. Such quality differences over the length of the wound roll core are disadvantageous for the subsequent forming processes.

In addition, the increased initial windings interfere with subsequent transport and transfer operations.

The contact surface of the fine steel ring is characterized by loose outer and a few inner initial turns, which can cause not only a defective ring shape and material damage during transport by high contact pressure.

Since when winding under train the reel disc is not reached by the rolling, arise below the forming ring by overwinding the ring boundary individual, because of the winding diameter change but draft-free turns that dislocate eccentric and disturb the winding order or grind in extreme cases at the winding space. The basic design of the reel allows only the deporting of the finished ring from the dished plate, which means a restriction on the ring masses.

According to SU-PS 712162 winding table for winding machines with vertical winding axis for winding fine steel by means of vertical winding arms are known. The wrapping arms, in conjunction with the one-piece reel disc, form a trap for the rolling stock tips. The latter is limited by a board on the reel disc and obliquely arranged to the board, elongated ribs. The disadvantage is that ribs and board on the one hand hinder a deportation of the ring from the raised reel disc and on the other hand, the reel disc with the ribs can detect any other arrangements for discharging the ring. A further disadvantage is that the inner surfaces of the ribs are arranged parallel to the winding axis, which favors interference when catching. Another disadvantage is that the Walzgutspitze on board, so can be radially outward in the region of the Ringaussendurchmessers and therefore can be confused with the wire end during subsequent unrolling.

Object of the invention

The aim of the invention is to improve the quality of the ring by trouble-free catching the Walzgutspitze.

Explanation of the essence of the invention

The object of the invention is to prevent the emergence of loose enlarged initial turns. According to the invention the object is achieved in that the reel disc consists of a middle, liftable lifting part and two segments whose shelves have catch elements that form a polygonal or star-shaped catching contour and enclosing Fangbordkreise.

Another feature of the invention is that the limited by the catch elements trap area is flared downwards.

embodiment

Reference to an embodiment, the invention will be explained in more detail. Show it:

Fig. 1: the top view of a part of the winding space

2 shows a section A-A from FIG. 1 (on an enlarged scale)

Fig. 3: the top view of the arrangement of the catch elements

4 shows the schematic structure of a cut-open winding ring in the excavated state.

According to Fig. 1, the pendulum tube 1 is arranged inclined in the catching position to the plane of the winding plate 2, which consists of the central lifting part 3 and the two congruent segments 4. The extended axis of the pendulum tube 1 is at the same time the inlet direction of the rolling stock 5 and aligned with the catching space 6 of FIG. 2 and 3, which is formed by the winding arms 7, the winding plate 2 and attached to the board 8 of the plate 2 catch elements 9 or 10 , The catch elements 9 and 10 represent two possible embodiments, delimiting the catching space 6 outwardly by a polygonal (9a or b) or star-shaped (10a) contour enclosing catching loops (11a or b). The inner surfaces of the catch elements 9 and 10 are downwardly, as shown in Figure 2, inclined (9a and 9b), whereby the catching space 6 is flared downwards. The wrapping arms 7 are hinged to the center in the winding base 12 and the winding space is limited above the Fangeiementeoberkante 13 to the outside through the cooling jacket 14.

The rolling stock 5 runs during the catching process at the beginning of the winding process with the rod tip in the direction of the axis of the pendulum tube 1 and meets in the trap 6 on the winding plate 2 and against the catch elements 9 or 10. By dimensioning the catch elements 9 and 10, the catching space 6 radially be narrowed so that the outer diameter Dp of the initial turns 15 of Figure 4 is substantially smaller than the ring outer diameter D ₃ and the diameter D _9imu the Endwindungen 16.

Catching the start of rolling takes place according to two different principles of action:

First: Rolling stock with lower bending moment and rolling speeds over 10m / s is pressed under gravity and centrifugal force against the reel disc 7 and the catch elements 9 or 10 and formed to the initial windings 15 (Fig. 4) on the catching circle Dp, on which frictionally from the opposite the rolling speed leading catch elements train is exercised. Under tension, the rolling stock is then wound on the Wickelarmkreis Di, wherein the rolling material runs approximately horizontally.

Second: rolling stock with a larger bending moment and lower rolling speed is deformed in the bending triangle, catch elements 9 or 10, winding arms 7 and pendulum tube 1, which builds on the frictional engagement of the contact forces to the catch elements of the winding train in the rolling stock 5. The driving forces in the rolling stock 5 support the catching process.

If the winding tension is built up, the rolling stock 5 has frictional engagement with the winding arms 7 or with the rolling stock 5 of the previously wound layer. The downwardly conically enlarged catching space 6 counteracts the rising of the rolling stock tip over the catching element upper edge 13, which contributes to operational safety. The slight inclination of the inner surfaces of the catch elements 9,10 does not hinder the lifting of the rolling ring from the segments 4 and the lifting part. 3

The design of the catch elements 9,10 allows about the Zehneckkontur 9a, 9b or the star contour 10a a certain positive engagement with the rod tip and under centrifugal force with the initial turns 15, whereby the Walzgutmitnahme is promoted.

The catch elements' 9,10 can be manufactured economically as Verschißißleisten and are easily replaceable. Due to the location of the initial turns 15 of Figure 4, the ring support surface is increased, reduces the surface pressure of the ring support and the distinction of ring beginning and end for the Abwickelprozeß on the ring in the drawing much easier, which saves time and can avoid accidents when unwinding.

Claims (2)

Invention claim: in conjunction with the reel disc form a trap space for the rolling stock point, which is bounded by a board on the reel disc and by elongated catch elements arranged along the board, characterized in that the reel disc (2) consists of a middle, liftable lifting part (3) and two Segments (4) whose rims (8) catch elements (9; 10) which form a polygonal (9a; b) or star-shaped (10a) catch contour and enclosing Fangbordkreise (11a, 11 b). 2. Winding plate according to point ^ characterized in that the by the catch elements (9; 10) limited catching space (6) is flared downwards.