JP2557157Y2 - Metal strip guide for slitter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal strip guide device for a slitter, which is disposed on the entrance side of a slitter for cutting a metal strip in a longitudinal direction, guides the metal strip to a correct position and introduces the metal strip into the slitter. is there.

[0002]

2. Description of the Related Art A conventional slitter supports a pair of rotary shafts at a predetermined interval in parallel with each other, provides a predetermined clearance around the center of both rotary shafts, and attaches a ring-shaped knife to the two rotary shafts. A metal strip such as a steel strip is passed between the knives in the longitudinal direction, and the metal strip is cut into two pieces at a predetermined width in the longitudinal direction. In this slitter, when the pair of shafts is free to rotate without driving, the metal band is cut into two by cutting the metal band into a knife by pulling the metal band with a pinch roll.

In such a slitter, accurate guidance in the metal band width direction becomes important. In the slitter disclosed in Japanese Patent Publication No. 64-1249 according to the present applicant,
It is necessary to adjust the inner width of the guide ring according to the width of the metal strip. This adjustment requires a lot of labor and time, such as temporarily stopping the slitter, replacing parts, and adjusting the position.

Further, a side guide is provided on the entrance side of the slitter, which is of a fixed type, so that the distance between the guide roll of the side guide and the knife of the slitter becomes longer, and the width direction of the metal strip is increased. The restraint becomes loose, and the cutting accuracy decreases. If you bring them closer, the cutting accuracy will improve,
During setup change and knife change, interference between the guide roll and the slitter knife occurs.

[0005] Further, since the roll surface of the side guide roll is flat, the metal band rises obliquely due to the offset of the metal band, and comes off the roll surface.
A center shift occurs.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to improve the cutting accuracy while changing the slitter and changing the knife in a short time in a metal band guide installed on the entrance side of the slitter.

[0007]

SUMMARY OF THE INVENTION A metal strip guide for a slitter according to the present invention supports a pair of rotary shafts at a predetermined interval in parallel with each other, and a predetermined clearance is provided on the outer periphery of the central portion of the two rotary shafts. A metal band guide device provided on the entry side of a slitter for cutting a metal band into a predetermined width in the longitudinal direction by attaching a ring-shaped knife and passing the metal band in the longitudinal direction between the two knives. A rotatable vertical roller with a V-groove for guiding the edge of the metal strip is rotatably supported on a trolley sliding along the metal strip pass line, and the trolley is selectively advanced by a drive mechanism along the pass line. -The above-mentioned problem has been solved by means of retreating.

[0008]

During normal cutting, the carriage is advanced to the slitter side, and other rollers including the auxiliary vertical rollers are brought as close as possible to the slitter knife. Thereby, the cutting accuracy is remarkably improved.

At the time of setup change, the carriage is retracted from the slitter. Accordingly, interference does not occur in mounting and removing parts, and the work is performed easily and quickly.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, an embodiment of the present invention will be described.

First, a general slitter 10 to which the present invention is applied supports a pair of rotary shafts 11 and 12 at a predetermined interval in parallel with each other.
The ring-shaped knives 13 and 14 are attached to the outer periphery of the center portion of the knives with predetermined clearances, and the metal band 20 is cut into a predetermined width in the longitudinal direction by passing the metal band 20 between the knives 13 and 14 in the longitudinal direction. It has a structure.

The metal band guiding device 30 of the present invention is provided on the entrance side of the slitter 10. The device 30 of the present invention includes the cart 3
1, a bed 32, vertical rollers 33 and 35 with V-grooves, a drive mechanism 36 such as a feed screw mechanism, a rack-pinion mechanism, and a fluid pressure cylinder, a connecting member 37, a handle 38, and a left and right screw shaft 39.

The apparatus 30 of the present invention comprises a pair of brackets 351 extending in parallel at predetermined intervals along a pass line on a carriage 31 sliding on a bed 32 along a pass line 21 of a metal strip 20. And a vertical roller 3 with V-grooves for guiding the edges of the metal band at both ends of the bracket.
3 and 35 are rotatably supported, and the cart 31 is
1 is selectively advanced and retracted by the drive mechanism 36.

Among the vertical rollers, it is preferable that the vertical roller 35 with a V-groove, particularly on the downstream side, is disposed closest to the slitter 10 of the carriage 31 through the bracket 351.

The spacing between the rollers 33, 34, 35 in the plate width direction is adjusted by a conventional feed screw mechanism (for example, a handle 38, a left and right screw shaft 39, a nut (not shown)).
Etc.).

The carriage 31 and the drive mechanism 36 are connected to a connecting member 37.
Are interconnected by At the time of normal cutting, the drive mechanism 36 pushes out the carriage 31 to approach the slitter, and at the time of setup change, the drive mechanism 36 pulls back the carriage 31 to form a sufficient space between the slitter 10 and the carriage 31. I do.

According to the present invention, it is possible to omit the guide ring, the spacer bolt and the like in the above-mentioned conventional slitter.

[0018]

According to the present invention, the time required for the setup change is reduced to about 1/3, and the cutting accuracy is improved by about 40%.

The present invention can be applied not only to a slitter but also to a guide device on the entrance side such as a flash butt welding device, a cutting device, and a roll straightening device.

[Brief description of the drawings]

FIG. 1 is a side view of a slitter metal strip guide device and a slitter according to the present invention.

FIG. 2 is a plan view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Slitter 11,12 Shaft 13,14 Knife 20 Metal strip 30 Guide 31 Cart 32 Bed 33,35 Vertical roller with V-groove 36 Drive mechanism 37 Connecting member 38 Handle 39 Left and right screw shaft

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of rotary shafts are supported at a predetermined interval in parallel with each other, and a ring-shaped knife is attached with a predetermined clearance around the center of the two rotary shafts. In a metal band guide device provided on the entry side of a slitter that cuts a metal band to a predetermined width in the longitudinal direction by passing the band in the longitudinal direction, a bogie that slides along a pass line of the metal band on the bed, A pair of brackets extending in parallel at predetermined intervals along a pass line are provided, and at both ends of the brackets, a vertical roller with a V-groove for guiding an edge portion of a metal band is rotatably supported, and the bogie is passed. A metal band guide device for a slitter, which is selectively advanced and retracted by a drive mechanism along a line.