JPH0347788Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a guide member for a skinning die for skinning the outer periphery of a steel bar.

[Prior Art] A rolled steel bar often has scratches on its outer periphery, and a steel bar passed through a heating furnace has decarburized portions on its outer periphery surface. Conventionally, so-called skin shaving is carried out in which the outer circumferential surface of a steel bar is scraped to a constant depth by passing it through a skin shaving die having an insertion opening with a cutting tool provided on the periphery of the opening.

In this case, there is a problem of how to guide the steel bar into the die insertion port, and conventionally, the tip of the steel bar is inserted into the insertion port using the small diameter leading part.

[Problems to be solved by the invention] However, since a chip breaker or the like is usually installed near the insertion port to cut chips generated during cutting, it is difficult to feed the steel bar and place the guide roller at a position sufficiently close to the insertion port. could not be installed, and it took time and effort to insert the unstable leading portion into the insertion opening. In addition, even when feeding carefully, the unstable leading portion often hits the cutting tool in the insertion opening and damages it.

The present invention solves this problem and allows the leading end of the steel bar to be guided quickly and reliably into the charging port of the die, thereby improving work efficiency and preventing accidents such as breakage of the cutting tool. The purpose of the present invention is to provide a guide member for a skin scraping die.

[Means for solving the problems] The configuration of the present invention will be explained with reference to FIGS. 1 and 2.
The guide member 1 has a cylindrical part 11 and a guide part 12, and the cylindrical part 11 is placed in an insertion position in contact with the inner periphery of the insertion opening D1 of the die D. Guide section 12
is continuous with the cylinder upper part 11 and has a funnel shape that gradually expands outside the insertion opening D1.

[Function] As shown in the figure, when the small-diameter leading part at the tip of the steel bar is fed into the guide part that expands outward with the guide member inserted and held in the die insertion opening, the end face of the leading part touches the guide part. It is guided by the inclined surface, smoothly reaches inside the cylindrical part, and is inserted into the insertion opening.

When the steel bar is further fed in this state, the guide member is first cut and broken by a cutting tool provided around the insertion opening, and then the outer surface of the large diameter general portion of the steel bar is scraped by the cutting tool.

[Effect] By using the guide member with the above structure, the steel bar is smoothly guided to the die insertion port, speeding up the work, and the steel bar is guided reliably to prevent interference with the cutting tool and damage. There were no accidents.

[Example] In FIGS. 1 and 2, a circular die D is fixedly held by a holding device (not shown), and an insertion opening D1 is provided in the center of the die D through which it is inserted. The insertion opening D1 has a tapered shape that decreases in diameter toward the front, and a cutting tool D2 is formed at the periphery of the front opening to protrude forward.

A guide member 1 is inserted and held in the insertion opening D1. The guide member 1 is an integrally molded product made of synthetic resin, and includes a cylindrical portion 11 having a diameter approximately equal to the inner diameter of the insertion port D1, and a funnel-shaped guide portion 12 that is connected to the cylindrical portion 11, and is separated at one place on the side surface.

The steel bar W is fed toward the guide member 1 by an unillustrated guide roller. In this state, the tip of the small-diameter leading portion W1 having an unstable position at the tip of the steel bar comes into contact with the inclined surface of the guide portion 12, and is smoothly guided and inserted into the cylindrical portion 11. With the leading portion W1 inserted, the guide member 1 is opened and removed at its cut-off portion, and then the steel bar W is pushed in, and the surface of the steel bar is scraped to a predetermined depth by the cutting tool D2.

In this way, the peeling work can be carried out quickly without causing damage to the cutting tool of the die.

In the above embodiment, a cutaway part is provided in the guide member so that it can be removed just before skinning and used again. However, the guide member does not necessarily need to be removed, and can be sent into the die together with the steel bar to be cut and broken. It's okay.

The guide member does not necessarily need to be made of synthetic resin; if the above-mentioned separation is provided, a flexible material should be used, and if it is supplied together with the steel bar into a cutting tool, it will be cut and destroyed by the cutting tool without resistance. Use as a material.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a guide member provided on a die, and FIG. 2 is a sectional view thereof. DESCRIPTION OF SYMBOLS 1... Guide member, 11... Cylindrical part, 12... Guide part, D... Dice, D1... Insertion opening, D2...
Bit, W... Steel bar, W1... Leading part at the tip of the steel bar.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A guide member used in a skinning die that scrapes the outer periphery of a steel bar inserted into an insertion opening using a cutting tool formed on the periphery of the opening of the insertion opening, which a cylindrical part that is inserted into the cylindrical part in contact with the inner periphery of the cylindrical part; A guide member for a steel bar peeling die, comprising a guide section for guiding. (2) The guide member for a skinning die for a steel bar according to claim 1, wherein the guide member is an integrally molded synthetic resin product, and the side surface of the guide member is cut off at one point in the circumferential direction.