JPS6144565B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winding machine for winding hot strip steel.

The winding machine consists of a rotatably driven mandrel shaft, a winding drum made up of a plurality of expandable and retractable segments placed around the mandrel shaft for winding the steel strip, and a winding drum between the mandrel shaft and the winding drum. placed,
There is also a wedge shaft configured to be movable in the axial direction, and the segment can be expanded or contracted by moving the wedge shaft in the axial direction.

By the way, the winding cylinder directly contacts the hot band steel at a high temperature of about 600°C, causing thermal deformation. If the amount of thermal deformation is large, damage to the winding machine and malfunction will occur, so generally the winding drum is cooled from the inside and outside with cooling water or the like.

However, since there is a large temperature difference between the front side (approximately 600°C) and the back side of the segments that make up the winding drum, the segments tend to deform (row) in a convex shape in the mandrel axis direction, which can cause wedge shaft malfunction. There is a risk that this may occur. If the wedge shaft becomes stuck, production of hot strip steel must be stopped, and productivity will drop significantly.

An object of the present invention is to provide a hot band steel winding machine in which the wedge shaft operates smoothly and the segments can be reliably expanded and contracted. A gap is provided between the inclined surfaces of the wedges located at both ends of the plurality of wedges connected in the axial direction of the mandrel and the corresponding inclined surfaces in the segment, so that even if the segments warp due to thermal deformation, This allows the wedge shaft to move smoothly.

An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 is a partial cross-sectional view of the main parts of the winder;
The figure is a partial side view, in which 1 is a mandrel shaft rotationally driven by a drive device (not shown), 2 is a segment, and 3 is a piston rod 5 in a rotating cylinder 4.
a wedge shaft movable in the axial direction; 6 a connector connecting the wedge shaft and the piston rod 5; 7;
is a rotary joint that supplies hydraulic oil to the rotary cylinder 4. As is clear from FIG. 2, the wedge shaft 3 has a projection 8, and a groove 9 is formed in the segment for engagement with the projection 8. This allows the segments to be held by centrifugal force even when the mandrel shaft rotates.

Further, the wedge shaft is formed such that the wedges located at both ends in the mandrel axial direction are lower than the wedge located at the center, as shown in an enlarged view in FIG. That is, a gap is formed between the wedge inclined surface 10 and the intra-segment inclined surface 11.

FIG. 4 shows the hot strip 12 being wound up. Even if the segments warp in the axial direction of the mandrel due to the heat of the hot strip steel, due to the effect of the gap mentioned above,
No unreasonable force is applied to the wedge shaft, and the entire wedge shaft can support the hot strip steel. That is,
An appropriate engagement relationship between the segments and the wedge shaft that allows the winding cylinder to expand and contract smoothly can be maintained at all times.

In the above embodiment, a case has been described in which the height of the wedge of the wedge shaft is adjusted, but it goes without saying that the height of the inclined surface within the segment may be changed.

As described above, the present invention provides a rotationally driven mandrel shaft, a winding drum made up of a plurality of expandable and contractible segments disposed around the mandrel shaft for winding a steel strip, and a mandrel shaft and a winding drum. In a hot band steel winding machine consisting of a wedge shaft disposed between the barrels and movable in the axial direction, one of the wedges located at both ends of a plurality of wedges arranged in series in the axial direction of the mandrel to constitute the wedge shaft. A gap is provided between the inclined surface and the corresponding inclined surface in the segment, so even if the segment undergoes thermal deformation due to the hot band steel, the wedge axis can always be smoothly moved in the direction of the mandrel axis. Smooth expansion and contraction of segments can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view of a hot band steel winding machine showing an embodiment of the present invention, Fig. 2 is a view taken along the - line in Fig. 1, and Fig. 3 is a position of segments and wedge shafts. FIG. 4 is an enlarged sectional view showing the relationship, and is a diagram showing the state when the hot band steel is being wound up. 1... Mandrel shaft, 2... Segment, 3...
...Wedge axis, 10...Wedge slope, 11
...Intra-segment inclined plane.

Claims (1)

[Claims] 1. A mandrel shaft that is rotatably driven, a winding drum that is arranged around the mandrel shaft for winding the steel strip and is made up of a plurality of expandable and contractible segments, and a winding drum that is arranged between the mandrel shaft and the winding drum, and In a hot band steel winding machine comprising a wedge shaft that is movable in the axial direction, an inclined surface of a wedge located at both ends in the axial direction among a plurality of wedges arranged in a row in the axial direction of the mandrel to constitute the wedge shaft; The height in the radial direction of at least one of the wedge inclined surface and the intra-segment inclined surface is made lower than the other so that a gap is created between the corresponding inclined surfaces in the segment when the segment is expanded. Features of hot band steel winding machine.