JP2010531736A - Scaleable coiler drum - Google Patents

Abstract

  In a coiler drum (1) comprising a radially extending expansion / contraction segment (2), a drum body (3), and a tension bar (4) arranged around the expansion / contraction segment (2), drum body (3) and One or more of the tension bars (4) are configured as magnets. Such a coiler drum is operated by constructing one or more of the expansion / contraction segment (2), the drum body (3) and the tension bar (4) as an electromagnet, and the electromagnet voltage is wound around the beginning of the strip. It is defined that the application starts when taking, decreases during rolling, and rises again when the strip is unwound.

Description

  The present invention relates to a coiler drum including a radially expanding / contracting segment arranged around, a drum body, and a tension bar, and a method for operating such a coiler drum.

  The winding equipment is used, for example, for winding a rolled metal plate or other material as a coil on a coiler drum or unwinding from a coil. In the case of winding, the expansion / contraction segment protrudes outward in the radial direction so that the outer periphery of the expansion / contraction segment becomes a ring shape. When unwinding the coil, the diameter of the coiler drum must be smaller than the inner diameter of the coil and the coil must be removed. For this reason, the coiler drum can usually achieve two different diameters as prescribed, and only the maximum diameter when it is expanded forms the largest ring.

  In known embodiments of such coiler drums, the radial position of the coiler segments is adjusted for this purpose by means of a wedge-shaped surface that is moved by means of tension bars or extrusion bars.

  In Patent Document 1, rolling provided with a drum composed of a plurality of segments capable of expanding and contracting supported by a sliding surface formed in a wedge shape with respect to a coiler shaft rotatably supported in a coiler housing. A strip winding / unwinding coiler is described. A piston connected to the drum segment using a connection flange passes through the coiler shaft. In that case, the drive causes an axial relative sliding movement between the coiler shaft and the piston connected to the segment, thereby realizing the expansion and contraction movement of the segment. Further, the coiler has a slide drive unit for pulling out and pulling back the coiler drum relative to the strip flange and / or the center adjustment unit of the strip, and the coiler shaft is fixed in the position of the coiler housing. It is supported in such a way that it can be slid in the axial direction, and the drive unit cannot be rotated with respect to the fixed coiler housing in order to expand or contract the coiler shaft, but can slide in the axial direction The piston / cylinder unit is provided, the compression spring tries to keep the segment in an expanded state, and the slide drive unit is composed of a piston / cylinder unit for sliding the coiler shaft in the axial direction.

  According to Patent Document 2, it is supported by a hollow shaft that is pivotally supported at two locations in a support column, and can be operated by a drive rod that moves through the hollow shaft of a drive cylinder disposed on the hollow shaft. A metal strip winding / unwinding coiler composed of a winding drum and having a strip traction force of 10 kN to 1000 kN is well known. The hollow shaft is connected to a drive motor composed of a stator and a rotor, which is disposed between two bearings of the hollow shaft. In this case, the hollow shaft is configured as a rotor shaft, and the drive rod is configured as a shaft of a winding drum that is supported in the hollow shaft.

  Cited Document 3 describes an expandable / contractable coiler drum for winding a strip-shaped rolled product, particularly a hot-rolled strip, comprising an inner drum body and a plurality of expansion / contraction segments installed thereon. Has been. These expansion / contraction segments are supported by a wedge-shaped surface of a wedge-shaped rod having a number of wedge-shaped surfaces, which are supported concentrically within the drum body by a push-in plunger, and the expansion / contraction segments are supported in the drum body by a bracket. It is connected to a wedge-shaped rod supported concentrically.

  From US Pat. No. 6,057,049, a rolling strip coiler is already known which has a piston held in an enlarged position in the form biased by the force of a spring, the piston being fixed in position and in a non-rotatable form. It is possible to operate for the enlargement / reduction of the segments using the arranged drive device.

  According to US Pat.

  According to Patent Documents 7 to 10, it is well known to arrange a magnet in the expansion / contraction segment. However, there are further pressing rolls and / or belt wrappers required during winding and unwinding to capture the strip during winding and to guide the end of the strip. Such devices are expensive to manufacture, assemble and maintain. Furthermore, these devices make it difficult to control the strip as it is removed from the rolling line / roller. A disadvantage of these known embodiments is that additional wiring for generating magnetic force is passed through the shell. Due to shell wear or surface wear, the winding gradually becomes exposed or corroded. When the shell breaks, the magnetic force disappears immediately.

German Patent Publication No. 3502452 EP 0504296 German Patent Publication No. 1777229 German Patent No. 3028607 British Patent Publication No. 948,419 U.S. Pat. No. 4,433,814 JP-A-5-154552 JP 2001-252716 A JP-A-3-275255 JP 58-68425 A

  From the above, an object of the present invention is to simplify a well-known structure that requires a load and to eliminate the above-mentioned drawbacks. By doing so, it is to extend the service life of the expansion / contraction segment and improve the controllability of the holding force. Furthermore, by using as few parts as possible, it is possible to realize a device that requires only a small structural burden.

  In the present invention, in a coiler drum provided with a radially expanding / contracting segment arranged around, a drum body, and a tension bar, at least one of the expansion / contraction segment, the drum body and the tension bar is configured as a magnet. This solves this problem. By doing so, the belt wrapper and strip pressing roll are not required when winding the strip.

  Further embodiments of the coiler drum are set forth in the dependent claims relating thereto.

  Furthermore, the present invention relates to a method for operating a coiler drum including a radially expanding / contracting segment, a drum body, and a tension bar, which are arranged around one or more of the expansion / contraction segment, the drum body, and the tension bar. Constructed as an electromagnet, the supply voltage of the electromagnet starts to be applied when winding the beginning of the strip, decreases during rolling and increases again when the strip is rewound. Doing so saves energy. The supply voltage is reduced partially or to zero depending on the characteristics of the strip.

  By using a magnet capable of controlling the magnetic force as the expansion / contraction segment, the drum body or the tension rod, the use of a pressing roll and a belt wrapper is avoided. A larger magnetic force is generated at the start of winding. Capture and wind up the strip. During rolling, the coil winding is tightly wound and the coil winding cannot be unwound, so that the magnetic force can be reduced or stopped. The magnetic force is increased again when the strip is rewound. Thereby, the end of the strip can be placed on the flange and inserted into the flange lifter.

  To prevent magnetization of the strip being wound, the polarity of the magnetic field is reversed after the rolling process and immediately before the coil is pulled out of the coiler drum.

Power is supplied to the expansion / contraction segment, the drum body, or the magnet parts as the tension rods via a transformer. The transformer can variably adjust the magnitude of electric power. Use it to control the magnetic force. Three different methods can be used to power the scaling segment.
1. Supply on the drive side using a slip ring. For this purpose, the tension bar is cut and the cable is passed. Connect the expansion / contraction segment to the connector.
2. Supply on the use side in the vicinity of each expansion / contraction segment using a slip ring. Such an arrangement must be mechanically protected against striking the strip when the strip is torn.
3. Transfer of energy to the expansion / contraction segment using an induction coil. Such non-contact transmission is possible on the use side. Must be protected as well.

  The coiler drum in which the expansion / contraction segment, the drum body, or the tension bar is configured as a magnet can be incorporated into a payoff reel, a tension reel, a reversible coiler, an inspection coiler, a double expansion / contraction head coiler, or later (at the time of replacement).

  Another advantage of the coiler drum according to the present invention is that there is a mechanical problem with existing equipment for rolling magnetizable materials, such as TCM, SPM, CCM, RCM, CSP, since only the coiler drum needs to be replaced. It can be added and refurbished. The new facility will save investment costs for belt wrappers, strip hold-down rolls and hole foundations.

  Embodiments of the invention will be described in detail on the basis of very schematic drawings.

Longitudinal section of coiler drum with expansion / contraction segment, drum body and tension rod Cross section of coiler drum

  FIG. 1 shows a longitudinal section of a coiler drum 1 having an expansion / contraction segment 2, a drum body 3 and a tension bar 4. The expansion / contraction segment 2 is positioned in the radial direction by the tension bar 4. In this case, the circumference of the expansion / contraction segment 2 forms a ring shape at a position outside the radial direction.

  The voltage is transmitted through a slip ring 5 connected to a tension bar 4. When the tension bar 4 or the drum body 3 is configured as a magnet, the expansion / contraction segment 2 must be further magnetized, so it is necessary to consider increasing the magnetic force.

  FIG. 2 shows a cross section of the coiler drum.

1 Coiler drum 2 Expansion / contraction segment 3 Drum body 4 Tension bar 5 Slip ring

Claims (5)

In a coiler drum (1) comprising a radially extending expansion / contraction segment (2) arranged around, a drum body (3), and a tension bar (4),
One or more of the expansion / contraction segment (2), the drum body (3), and the tension bar (4) are configured as magnets. In the coiler drum (1) according to claim 1,
A coiler drum, wherein the magnet is configured as an electromagnet. In the coiler drum (1) according to claim 2,
A coiler drum characterized in that the electromagnet is configured in the form of an expansion / contraction segment (2), a drum body (3) or a tension bar (4), in particular, having an electrical connection terminal for supplying electric power. In the coiler drum (1) according to claim 3,
Coiler drum characterized in that a slip ring (5) is provided for transmitting power to an electromagnet in the form of an expansion / contraction segment (2), a drum body (3) or a tension bar (4). In a method of operating a coiler drum (1) comprising a radially expanding / contracting segment (2) arranged around, a drum body (3), and a tension bar (4),
One or more of the expansion / contraction segment (2), drum body (3) and tension bar (4) are configured as electromagnets;
The electromagnet voltage is applied when winding the leading edge of the strip, decreased during rolling, and raised again when unwinding the strip;
A method characterized by.

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