JP2536212Y2 - Coil rewinding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a coil rewinding device having a horizontal mandrel for rewinding a loosely wound coil.
The present invention relates to a coil rewinding device for preventing a telescopic coil shape defect occurring at the time of rewinding.

[Conventional technology]

For example, Japanese Utility Model Publication No. Sho 63-34731 discloses a coil rewinding machine for the purpose of preventing a telescopic shape defect occurring at the time of rewinding a loose coil. As shown in FIG. 3, the plate 2a divided as shown in FIG. 3 is combined with a spring to form the pressing plate 2 on the end face of the coil 1. In such an apparatus, as shown in FIG. When the coil diameter is reduced, the direction of movement and the speed of the strip 8 and the holding plate 2 are different at the unwinding opening A, so that a competition occurs, and in particular, a trouble such as breaking a strip ear at a divided portion of the holding plate 2 is caused. There is a problem that the ear portion of the strip may be defective.

To solve this problem, Japanese Patent Laid-Open Publication No. 1-205817 has proposed a technical means for avoiding the problem by providing radially divided pads and sequentially inserting the pads. However, such a means requires a large number of actuators for the coil end face holding plate, and the structure is very complicated. Therefore, considering the use on an actual production line, the mechanism is not necessarily economical and can be realized. I couldn't say.

[Problems to be solved by the invention]

The present invention solves the problems of the prior art as described above and, when the coil diameter is reduced, prevents a competition due to a difference in moving direction and speed between the strip and the coil end face holding plate, and causes a strip ear failure. It is an object of the present invention to provide a coil rewinding device that eliminates the above problem and prevents a telescopic shape defect.

[Means for solving the problem]

The present invention is intended to solve the above-mentioned problems, and is applied to a coil rewinding device equipped with a coil end surface pressing plate for preventing occurrence of a telescopic shape defect along both end surfaces of a loose coil, The following technical measures were taken. That is, the presser plate is a donut-shaped plate having a coil presser surface that inclines outward in a divergent shape from the inner diameter portion to the outer diameter portion of the coil, and the amount of inclination of the coil presser surface is in the thickness direction of the presser plate. On the other hand, the outer diameter of the presser plate is not less than 10 mm and not more than 100 mm per 1500 mm. A conical surface that slopes outward from a position of 200 mm or less, and is supported on the inner periphery of the holding plate on the outer periphery of the mandrel to support the holding plate concentrically with the mandrel, and A coil rewinding device characterized in that a claw having a coil holding surface is provided in a gap between the holding plate and the outer periphery of the mandrel even when the diameter is reduced.

[Operation] The coil end face holding plate is formed as a donut-shaped plate having an integral structure, and by providing a relief in which the outer diameter side of the coil holding surface is inclined in the axial direction, competition between the strip and the holding plate can be prevented.

Due to the action of the claw, the holding plate is supported by the mandrel even when the diameter of the mandrel is reduced, and the side surface of the claw portion is formed on the end surface of the coil inner diameter portion located in the gap formed between the holding plate and the outer periphery of the mandrel. To abut the coil end face.

Escape inclination (cone height) is 1500mm outside diameter
On the other hand, if the width accuracy of the strip and the skew of the strip are taken into consideration, it is required to be 10 mm or more, and if it exceeds 100 mm, the role of the coil end face pressing plate is lost. Therefore, the height of the conical portion is 10 mm or more and 100 mm or less with respect to the holding plate outer diameter of 1500 mm.

The reason why the length of the parallel portion on the inner diameter side was set to 200 mm or less in the radial direction from the position at the time of expanding the mandrel diameter is as follows.
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〔Example〕

An embodiment will be described below. FIG. 1 is an explanatory view of an embodiment of the present invention. FIG. 1 (a) is a side view of a holding plate, and FIG. 1 (b) is a view taken along the line AA of FIG. 1 (a). is there. Coil 1
Is mounted on the mandrel segment 4, and the segment 4 is expandable and contractable, and fixes the coil 1 by expanding the diameter.
In FIG. 1, 6 is a housing, and 7 is a bearing.

The coil end face holding plate 2 has an integral structure of a donut-shaped plate,
The coil holding surface side has a parallel portion parallel to the coil end surface,
It is formed from a conical surface that inclines outward from a position with a radial length of 250 mm or less from the outer circumference of the mandrel during expansion and contraction. When the height of the conical portion is x, the risk that the strip edge and the holding plate 2 compete with each other decreases as the value of x increases,
The original function as the coil end surface holding plate is impaired.

Generally, payoff reels have a shift function of ± 100 mm as a CPC (center position control) function. Therefore, if x is 100 mm or less as a pressing plate, it can be said that it is within the CPC function range of the payoff reel. Also, it is considered that the minimum value of x is required to be 10 mm or more in consideration of strip width accuracy and strip skew.

Since the coil end face holding plate 2 is a one-piece structure of a donut-shaped plate, the locking portion with the expansion / contraction segment 4 has a large number of claws 3 radially arranged on the inner peripheral surface of the holding plate, so that the strip of the inner diameter of the coil protrudes. Prevents shape failure. At this time, the claw 3 is constantly pressed against the expansion / contraction mandrel 4 by the spring 5. Incidentally, the loose coil 1 gradually expands due to the tightening of the inner diameter portion during the rewinding rotation.
Since the expansion and contraction segment 4 and the claw 3 operate following this expansion, providing a tapered relief in the operating range of the claw 3 may result in damage to the strip edge by the claw.

For this reason, it is necessary that at least the operating range of the claw portion 3 of the inner diameter portion of the coil is such that the coil pressing surface of the coil end surface pressing plate 2 is parallel (that is, perpendicular to the mandrel). By the way, the length of the inner diameter side parallel portion y is naturally larger in view of the above-mentioned reasons, such as the incorporation of the operating mechanism of the other claw portion 3, but it is advantageous in manufacturing. Risk of strip edge damage due to

Here, it was confirmed by an experiment that when the value of y was 200 mm or less, the strip edge was not damaged (the experimental result is shown in FIG. 2).

In the embodiment of the present invention, the inclined portion of the holding plate is divided into a flat surface portion on the inner diameter side and a conical surface portion on the outer diameter side, and each is configured so that the cross-sectional shape is straight, but the whole is formed by a curved surface. Is also good.

[Effect of the invention]

According to the present invention, it is possible to prevent the occurrence of a telescopic shape defect at the time of unwinding a loose coil and to prevent the strip edge from being damaged by a coil end surface pressing plate at a glance.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention. FIG. 1 (a) is a side view of a holding plate, and FIG. 1 (b) is FIG. 1 (a).
2 is a view showing the relationship between the length of the parallel portion and the presence or absence of damage to the strip edge, and FIG. 3 is an explanatory view of a conventional example.
FIG. 3 (a) is a front view, FIG. 3 (b) is a side view, and FIG. 4 is an explanatory view of a strip edge damage generating portion. DESCRIPTION OF SYMBOLS 1 ... Coil, 2 ... Pressing plate 2a ... Divided plate, 3 ... Claw part 4 ... Expansion / contraction segment, 5 ... Spring 6 ... Housing, 7 ... Bearing 8 ... Strip A ... Winding Outlet, x: Height of conical part y: Length of parallel part

Continuing on the front page (72) Inventor Toru Takeuchi 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama (No address) Inside the Mizushima Works, Kawasaki Steel Corporation (56)

Claims (1)

(57) [Scope of request for utility model registration] 1. A coil rewinding device equipped with a coil end surface pressing plate for preventing occurrence of a telescopic shape defect along both end surfaces of a loose coil. It consists of a donut-shaped plate having a coil press surface inclined outwardly in a divergent shape toward the radial portion, and the amount of inclination of the coil press surface is 10 mm or more per 1500 mm outside diameter of the press plate in the thickness direction of the press plate. 100 mm or less, the coil holding surface of the holding plate is a parallel portion parallel to the coil end surface on the coil inner diameter side, and a cone inclined outward from a position 200 mm or less in radial length from the outer circumference of the mandrel at the time of diameter expansion. And inside the inner peripheral portion of the holding plate, which is engaged with the outer periphery of the mandrel to support the holding plate concentrically with the mandrel. Coil push in the gap with the outer circumference Rewinding device of the coil, characterized in that a claw portion having a surface.