JPS5868425A - Magnet type coiler - Google Patents

Abstract

PURPOSE:To improve work efficiency and yield of products by incorporating an electromagnet in a flexible segment that form a coiling drum and allowing to take up band steel on a drum attracting and holding the steel by magnetic force. CONSTITUTION:The tip of band steel is allowed to contact by pressing to a drum 20 by a press-contacting roll 41 when the band steel is sent out to a position of the take-up drum 20 in which plural segments 21 of arcuate sectional form are supported on a take-up shaft allowing free expansion and contraction in radial direction and the press-contacting roll 41. Then, electricity is conducted to an electromagnet 32 of the segment 21 through a rotary contactor and a switch and the band steel is attracted and fixed on a magnetic pole member 33. Next, the drum 20 is driven by inching, and after coiling a turn or more, the band steel is taken up loading specified coiling tension. After demagnetizing each segment 21, diameter of the segment is reduced and the coil is taken out.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a winding device for winding a copper strip or the like into a coil.

For example, as shown in FIG. 1, while unwinding the raw material coil 2 from the unwinding drum 1, the raw material coil 2 is sheared into a plurality of strips in the width direction by a slitter 3, and the multiple strips after shearing are In a slitter line in which a plurality of coils 6 of the copper strip material 4 are formed by winding the copper strip material 4 in parallel to the winding drum 5, it is possible to remove each wound coil 6 from the winding drum 5. A winding device is used that allows for

As shown in FIG. 2, in a conventional winding device of this kind, the outer circumferential portion of the winding drum 5 is divided into, for example, four parts, and each of these segments 8 can be expanded and contracted in the radial direction around the winding shaft 9. On the other hand, one of the segments 8 is provided with a kerf 10 having a triangular cross section, and an expansion/contraction mechanism 11 of the winding drum 5 is provided.
A gripper 12 with a triangular cross section that interlocks with the groove is disposed in the kerf 10, and this gripper 12 is used to clamp the bent end 4a provided in advance at the tip of each copper strip material 4 in the kerf 10. Those equipped with a locking device are commonly used.

In a slitter line using such a winding device, (a) it is necessary to manually insert a plurality of copper strips into the gripper one by one, which is a complicated and extremely inefficient operation;

(b) When winding up copper strip material, unevenness will occur in the gripper due to bending, and if winding is performed without correcting these unevenness,
A step called a reel mark occurs, resulting in a defective product.

(c) In order to prevent this reel mark, the bent portion is actually flattened by hitting it with a mallet or the like, but this requires a lot of time and effort when processing as many as 10 or more strips.

(b) After winding is completed, when the coil is placed on the coil car and taken out from the winding drum, the bent portion tends to get caught in the grooves of the gripper, and the inner diameter of the coil that has been carefully wound tends to become uncoiled. This causes defective products called surface folds.

(E) After winding is completed, the folded part created by the gripper must be cut out with metal cutter scissors for the next process of packaging paper rolls, and the greater the number of strips processed, the more labor it takes. Become something.

(f) The above-mentioned operations are not without danger and increase the chances of accidents occurring.

There were many other problems.

The present invention was made in view of the problems of the conventional winding device, and is a magnetic type winding device that can start winding without hooking the leading end of the strip to be wound on the winding drum. The basic objective is to provide a winding device for

For this reason, in the present invention, an electromagnet is built into each segment constituting the winding drum, arc-shaped magnetic pole materials are arranged side by side along the arc surface, and during winding, the magnetic pole materials are magnetized in the arc direction. The basic feature is that the tip of the steel strip to be wound is held by suction without the need to bend it.

Hereinafter, the present invention will be described in more detail based on illustrated embodiments.

As shown in FIG. 3, the winding drum 20 according to the present invention includes:
It has a basic structure in which a total of four magnetic segments 21 are attached around a drum shaft 22 so as to be expandable and contractible in the radial direction, similar to the conventional winding drum shown in FIG.

The non-mechanism for expanding and contracting each segment 21 in the radial direction is a single-shaped member 23, which is provided on the outer periphery of the drum shaft 22 and has a T-shaped cross section and a tapered surface in the axial direction, as in the conventional one.
, a T-shaped groove 24 into which this one-shaped member 23 is fitted and tapered in the axial direction, a piston rod 25 that moves the drum shaft 22 forward and backward relative to each segment 21 in the axial direction, and a piston rod 25 that drives the drum shaft 22 forward and backward. It consists of a cylinder (not shown).

Each segment 21 is attached to a mounting plate 28 that forms an inner peripheral surface by bolts 27 to a mounting base 26 provided with a T-shaped groove 24.
It is supported so that it can be expanded and contracted by fixing it.

The electromagnet 32 consisting of an iron core 30 and an electromagnetic coil 31 is arranged inside the enclosure formed by the side wall 29 and is fixed on the mounting plate 28. A pair of side walls 29a, 29 extending in parallel
b, arc-shaped magnetic pole materials 33 with a square cross section and separators 34 are alternately arranged and bridged, and the gaps between each magnetic pole material 33 and the separators 34 are filled with insulating waterproof material. The material 35 is filled, and the winding drum 20 as a whole is
It has a structure in which an arcuate surface 36 is formed as the outer circumferential surface.

The electromagnets 32 are arranged so that each magnetic pole material 33 is magnetized in its longitudinal direction, and if necessary, arranged in parallel in multiple stages in the circumferential direction as shown in FIG. It is made to be magnetized uniformly in the direction.

The lead wire 31a of the electromagnet 32 is drawn out from a draw-out hole 29d formed in one fan-shaped side wall 29C.

Next, a winding system using the winding drum 20 provided with the magnetic segment 21 described above will be described with reference to FIGS. 5 and 6.

5 and 6, 20 is the winding drum;
22 is a drum shaft, and this drum shaft 22 is connected to an electric motor (not shown), while the winding drum 20
A rotary contactor 37.37 is attached to the shaft portion between the shaft bearing 36 and the rotary plates 37a, 37a to connect the lead wire 31a of each segment 21, and the non-rotating eave side contact 37b, 37b and power supply box 38
Furthermore, a switch 39 and a demagnetizer 40 are provided for the power supply box 38, and during winding, the electromagnetic coil 31 of each magnetic segment 21 is connected to the power supply to attract the copper strip material and wind it. After the winding is completed, each coil wound on the winding drum 20 is demagnetized by a demagnetizer 40.

On the other hand, reference numeral 41 denotes a pair of arms 43 whose base ends are fixed to a common hinge shaft 42. A pressing roller is pivotally supported between the free ends of 43, and 44 presses the copper strip material to be wound onto the winding drum 20. A cylinder for driving a pressure roller for holding the winding drum 20 in an operating position (a) and a retracted position (b) in which it is largely retracted above the winding drum 20. It is connected to the shaft 42.

Further, 47 is a deflector roll arranged in front of the winding drum 20 in order to apply a predetermined tension to the copper strip material to be wound, and 48 is a guide table whose base is hinged and attached to the bearing stand 49 of the deflector roll 47. This guide table 48 is supported by a cylinder 50 that supports it from diagonally below.
During winding, the steel strip material 20 is guided in parallel to the horizontal guiding position (A) shown by the solid line in the figure. Note that Δ This guide table 48 is held by a cylinder 50 at a retracted position (b) shown by a virtual line in the figure when not needed.

Next, the operation of the winding system will be explained.

First, the raw material coil unwound from the unwinding drum is guided to the winding drum 20 side, and midway through, the raw material coil is sheared into multiple strips in the width direction by the slitter 3, and then transferred to the deflector roll 47 and the raised position (A). The tips of the plurality of steel strips are held on the winding drum 20 via the idle table 48.
Guide upwards.

Then, when the copper strip material is fed out to a position slightly past the pressure contact position between the winding drum 20 and the pressure contact roll 41, the pressure contact roller driving cylinder 44 is actuated to lower the pressure contact roll 41 to the pressure contact position, and the steel strip The tip of the material is pressed against the winding drum 20 by a pressure roll 41.

Thereafter, the switch 39 is operated to feed and excite the electromagnets 32 of each segment 21 to attract and fix the copper strip material to the winding drum 20.

Next, the winding drum 20 is driven to wind at least one turn. When winding is confirmed, the guide table 48 is lowered to the retracted position (b) shown by the imaginary line, and then a specified winding tension is applied by operating a tension pad (not shown).

After completing the winding preparations and completing all preparations for the slitter line, operation is started and the copper strip material is wound.

While the operation continues, when the winding thickness becomes 10 or more by visual inspection, the pressure roll 41 is retracted upward.

When the winding is completed, the coil car 52 that is placed on standby below the winding drum 20 is moved to support the coil wound on the winding drum 20 from below, and in this state, each segment 21 is connected to a demagnetizer. demagnetize the wound coil,
After demagnetizing, each segment 21 is reduced in diameter in the radial direction, the coil car 52 is moved in the extraction direction to extract it from the winding drum 20, and the segment is further moved to a predetermined location to perform necessary packing operations.

In the above description, the slitter line for steel plate coils has been explained as an example, but the present invention is not limited to this, and it goes without saying that it can be used as a winding device for coils made of magnetic material.

In addition, for winding non-magnetic materials such as stainless steel plates,
Although the present invention cannot be directly applied, it is advantageous to use a conventional gripper device for one segment and a magnetic segment according to the present invention for the other segment, since it can be applied to winding both non-magnetic and magnetic materials. It is.

As is clear from the above description, the present invention forms expandable and contractible segments constituting a winding drum as magnetic segments, and magnetically attracts and holds the strip material to be wound to wind it onto the winding drum. The present invention provides a magnetic winding device as described above.

According to the present invention, the strip to be wound can be wound without being caught on the winding drum, so winding can be started without having to perform inefficient and dangerous operations as in the past. It is also possible to remove the coil from the winding drum after the winding is completed.
Work efficiency and product yield can be greatly improved,
Particularly, when used in a multi-thread slitter line, the above-mentioned problems can be solved at once.

[Brief explanation of drawings]

FIG. 1 is an overall schematic explanatory diagram of a slitter line, FIG. 2 is a sectional view of a conventional winding device, FIG. 3 is a sectional view of a winding device according to an embodiment of the present invention, and FIG. 4 is a sectional view of a winding device according to an embodiment of the present invention. 5 and 6 are respectively a plan view and a side view of a winding system incorporating a winding device according to the present invention. 20... Winding drum, 21... Magnetic segment,
32... Electromagnet, 33... Magnetic pole material, 37... Rotating contactor, 38... Power supply box, 39... Switch. Patent applicant: Kawatetsu Electrical Steel Sheet Co., Ltd. Agent
Patent attorney Aohaku Ao and 2 others

Claims (1)

[Claims] (1) In a winding device equipped with a winding drum in which a plurality of segments having an arcuate cross section are supported on a winding shaft so as to be expandable and contractible in the radial direction, at least one segment has a built-in electromagnet and a narrow A magnetic winding device characterized in that magnetic pole materials are arranged in parallel along an arcuate surface, and each electromagnet is connected to a power source via a rotating contactor and a switch.