JP3081088B2 - Deburring device for side trimmed steel strip edge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing burrs on a steel strip edge which is used when crushing burrs or burrs generated when trimming both edges of a continuously supplied steel strip.

[0002]

2. Description of the Related Art In a steel strip processing line, both edges are trimmed in order to remove defective portions on both edges of the steel strip and to respond to a user's requirement for each size width. At this time, burrs or burrs are generated on the cut surface, and scratches are made on the surface of each roll while traveling on the processing line. If the transport direction is transported at right angles to the passing direction of the processing line, the steel strip itself is also scratched.

In order to prevent such a problem, there is a conventional fin masher for crushing burrs or burrs by a roll.
No. 8 is disclosed. As a deburring device for scraping burrs or burrs,
There is one disclosed in Japanese Patent No. 150021.

In FIGS. 7 (a) and 7 (b), 9: stand, 10: chock, 11: shaft, 12: lower roll, 1
3, 14: slide bearing, 15: inclined block,
16: Pin, 17: Shaft, 18: Upper roll, 19: Stopper, 20: Shaft end, 21: Pin, 22: Tip fitting, 2
3: Cylinder, 24: Bracket, 25: Screw axis. In FIG. 8, 26: plate material, 27, 28: grinding C
Indicates a role.

[0005]

However, these prior arts are still not perfect and have problems. For example, in Japanese Utility Model Laid-Open Publication No. 62-150021, in the case of a thin steel strip, the steel strip itself has no rigidity.
If a strip supporting device is newly required immediately near the deburring device, and if the shape of the steel strip is wavy in the traveling direction, there is a problem that the amount of cutting changes and excessive cutting occurs. In Japanese Patent Application Laid-Open No. 2-224918, the accuracy after crushing is unstable because the hydraulic cylinder is used to reduce the pressure at a constant pressure regardless of the amount (height) of burrs or burrs. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an apparatus for removing burrs from a side-trimmed steel strip edge.

[0006]

SUMMARY OF THE INVENTION The present invention is an apparatus for feeding a steel strip continuously substantially vertically and removing burrs or burrs on both edges of the steel strip generated by a side trimmer. Providing two pairs of rolls consisting of a roll and a moving roll, providing a spring for appropriately adjusting the rolling force to the moving roll, and supporting the chock of the moving roll by a sliding mechanism comprising a slide bearing , When the moving roll is retracted, an air cylinder is provided so as to be movable.

[0007]

The burring removal device of the present invention is a mechanism for crushing the burrs of the steel strip after trimming by the rolls on the front and back. The self-weight of the movable part is supported by a low-resistance slide bearing, so the influence of the self-weight is reduced. Since it is almost negligible, the spring reduction force can be made equal to the reduction force according to the amount of burrs, and stable plate thickness accuracy of both edges after crushing can be obtained. As shown in FIG. 2, in the experiments of the present inventors, the sliding resistance of a moving roll having a roll diameter of φ80 × 100 l was 1 kg, which is almost negligible.

That is, with a constant rolling force as shown in FIG. 5, it is impossible to follow a variable amount of burrs due to a change in the trimming state, and a rolling force excess / deficiency region occurs. According to the present invention, as shown in FIG. It is possible to obtain a characteristic which is substantially similar to the rolling force required for removing burrs. In the figure, a: the required rolling force for removing burrs, b: the rolling force by the hydraulic cylinder, c: the region where the rolling force is insufficient, d: the region where the rolling force is excessive, E: the rolling force by the spring, f: the air cylinder and the sliding part Shows the specific resistance of

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.
FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a vertical sectional view of a roll part, and FIG. 3 is a horizontal sectional view of a roll part.
As shown in FIG. 1, burrs on both edges of the steel strip 6 are crushed by fixed rolls 1 and movable rolls 2 on the front and back. The moving roll 2 is supported by a chock 8, which is supported by a sliding portion 5, and the sliding portion 5 is arranged substantially coaxially with the load point 7.

The sliding part employs a slide bearing to reduce the resistance. In addition, two slide bearings are arranged above and below the chock to prevent the chock from shaking. The moving roll 2 is opened and closed by a spring 4 in the rolling direction, and is opened by an air cylinder 3 when the main body is retracted when passing through a welding point or when the plate width changes. The spring 4 and the air cylinder 3 are arranged substantially coaxially with the load point 7, so that no eccentric load occurs.

The roll preferably has a diameter as small as possible (approximately φ80) and a structure in which only the roll rotates to reduce the rotation resistance. In addition, the material of the roll is preferably a super hard material or an equivalent material in consideration of abrasion resistance in high-speed sheet passing. The rolling force of the spring according to the present invention is plate thickness t0.1 to 0.4.
In the case of a thin steel strip of 10 mm, 10 to 15 kg
Very small ones are optimal. In a processing line, a thin steel strip having a thickness of 0.1 to 0.4 mm
Automatic rolling in the state of threading at mpm is possible. After rolling, even with high speed threading at 1200 mpm, burrs-free steel strip production is possible.

[0012]

According to the present invention, (1) the spring pressing method causes the pressure force to fluctuate in accordance with the amount of burrs or burrs, thereby stabilizing the amount and width of burrs or burrs after being crushed. It is possible. (2) Since the sliding resistance is small,
It can follow the vibration of the steel strip at high speed threading. (3) The rolling force is unchanged even if the load point is slightly shifted because of the direct-acting type. (4) It can be used regardless of whether the burrs are on the front or back of the steel plate.
(5) Because of the open system using an air cylinder, automation such as pressure reduction during running is possible.

[Brief description of the drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a sectional view taken along the line AA in the vertical direction of the roll portion of the present invention.

FIG. 3 is a cross-sectional view in the horizontal direction of the roll section of the present invention.

FIG. 4 is a vertical sectional view taken along line BB of the present invention.

FIG. 5 is a table showing the relationship between the rolling force and the burrs height in the conventional method.

FIG. 6 is a table showing the relationship between the rolling force and the height of burrs according to the present invention.

7A is a side view of the conventional system, and FIG. 7B is a view taken along the line BB of FIG.

FIG. 8 is an explanatory diagram of another conventional system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed roll 2 Moving roll 3 Air cylinder 4 Spring for crimping 5 Sliding part 6 Steel strip 7 Load point 8 Moving roll chock

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Seiji Omura 46-59 Nakahara, Tobata-ku, Kitakyushu Nippon Steel Corporation Machinery & Plant Division (56) References JP-A-2-224918 (JP, A) 1-79548 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B23D 79/00

Claims (1)

(57) [Claims] 1. An apparatus for continuously feeding a steel strip substantially vertically and removing burrs or burrs on both edges of the steel strip generated by a side streamer, comprising a fixed roll and a moving roll on both sides of the steel strip. A pair of rolls is provided, a spring for appropriately adjusting the rolling force is provided on the moving roll, and the chocks of the moving roll are slide bearings.
Supported by the sliding mechanism comprising a grayed and said at retraction of the mobile rolls, burr removal apparatus of the strip edges and side trimming, characterized in that a movable as air cylinder.