JPS582569B2 - Device for applying local strain to band-shaped metal plates - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for continuously applying uniform local strain to a band-shaped metal plate.

For certain uses, for example, applying multiple strains in the longitudinal direction at the required intervals in the width direction of a strip-shaped metal plate, and applying the required heat treatment to control the crystal grain size of the electrical steel sheet to improve magnetism. In this case, the strain is uniformly and densely applied only to the surface layer on one side of the steel strip in the thickness direction, and it is industrially wear resistant, can withstand long-term use, and has an advantage in terms of price. Something is desirable.

When locally applying strain to a metal plate, a device consisting of a flat roll B and a special strain applying roll A as shown in FIGS. 1 and 2 is generally used.

That is, on the surface of the roll A, a large number of protrusions 2 are provided in the circumferential direction at fixed small intervals 1 in the roll axis direction.
The surface is made into a rough surface 3 by electrical discharge machining or the like.

In this method, there is a tolerance of approximately ±10μ in the diameters of the many protrusions 2 and the rough surface 3 due to problems with mechanical finishing accuracy, and since the crown of the steel strip 4 is approximately 15μ, uniform local distortion is not possible. The drawback was that it was not available.

The present invention overcomes the problem of machining accuracy of the strain applying device and the problem of the crown of the strip, and provides a device capable of applying uniform local strain to a strip plate.

The embodiment will be described in detail below with reference to FIGS. 3 and 4.

FIG. 3 shows a state in which local strain is applied to a steel strip using the apparatus of the present invention, where A' is the apparatus of the present invention, B is a flat roll, and 4 is the strip.

The basic structure of the device A' of the present invention is composed of a strain-applying outer ring 5 and a pressure body 6, and an elastic body 7 such as rubber is adhered to the outer peripheral surface of the pressure body 6. An appropriate gap 1 exists between 5 and 5.

FIG. 4 shows the detailed structure of the device A' of the present invention.

Reference numeral 6 denotes a pressurizing body, and this pressurizing body is composed of a roll-shaped shaft core 8 and an elastic body 7 such as rubber attached to the surface of the roll-shaped shaft core 8.

Reference numeral 5 denotes a strain-applying outer ring which is inserted through the pressurizing body 6 and is composed of a predetermined number of rough-surfaced rings 9 and spacers 10 arranged alternately.

Moreover, the inner diameter of the rough ring 9 constituting the outer ring 5 is slightly larger than the outer diameter of the pressurizing body 6, and the inner diameter of the spacer 10 is the same as the rough ring 9, but the outer diameter is smaller than the rough ring 9. Therefore, a gap l exists between the pressurizing body 6 and the outer ring 5, and a protrusion formed by the rough surface ring 9 is formed on the outer ring 5.

Reference numeral 11 denotes a retainer, and a large number of spring storage holes 12 are provided around the inner periphery of the retainer, into which springs 13 are protruded and stored.

14 and 15 are double nuts screwed onto the threaded portion 16 of the pressurizing body 6 in order to tighten the retainer 11, and the rough surface ring 9 and the spacer 10 constituting the outer ring 5 are elastically held by the spring 13. Tightened.

The coarse ring 9 can be moved independently in the vertical direction in the drawing by the gap 1 between the outer ring 5 and the pressurizing body 6 by elastic tightening by the spring 13.

The structure of the embodiment of the present invention is as described above, and the purpose of the present invention is achieved in applying strain to the strip plate 4 due to the following action.

That is, even if there is a tolerance in the machining accuracy of the strain applying device, or even if a crown is formed on the strip, each rough surface ring 9 can be made independent according to the tolerance and the crown by applying pressure on the surface of the elastic body 7 using a pressurizing body. This displacement is sufficiently absorbed by the elastic body 7.

Moreover, during the strain imparting operation, due to the presence of the gap l formed above, the displacement of the elastic body 7 that absorbs the displacement of the elastic body 7 due to pressurization and the displacement of the rough surface ring 9 is effectively absorbed by the gap l above. Ru.

On the other hand, if the gap l does not exist, the elastic body 7
The displacement acts as a force to prevent the rough ring 9 from being displaced, and smooth displacement of the rough ring 9 cannot be expected.

As described above, according to the present invention, it has become possible to apply uniform strain to a strip plate by addressing the problem of machining accuracy of the strain applying device and the crown of the strip, and has greatly contributed to this type of field. It is something.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of a conventional strain applying method, FIGS. 3 and 4 show an embodiment of the device of the present invention, and FIG. 3 is a cross section taken along line A-A in FIG. 4, which shows a strain applying operation. 4 are overall sectional views. 5... Strain imparting outer ring, 6... Pressure body, 7
......Elastic body, 9...Rough surface ring, 10
...Spacer, 11...Retainer, 13...Spring.

Claims (1)

[Claims] 1. On the outer periphery of a roll-shaped pressurizing body whose outer circumferential surface is coated with an elastic material, there is a rough ring having an inner diameter smaller than the outer diameter of the pressurizing body, and a rough ring having the same inner diameter as the rough ring but with the rough surface. Spacers having an outer diameter smaller than the surface rings are inserted alternately, and the rough surface rings and spacers are compressed and fastened from both ends of the pressurizing body via springs to form a belt-shaped metal plate that constitutes a strain imparting outer ring. local strain imparting device.