Conveying device of rolled bars exiting from a cutting shear, cutting machine and cutting process thereof

Patent metadata

Field	Value
Publication number	US-9950357-B2
Application number	US-201414763117-A
Country	US
Kind code	B2
Filing date	Jan 23, 2014
Priority date	Jan 24, 2013
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A conveying device ( 4 ) for conveying rolled bar segments, continuously exiting from a cutting shear ( 3 ), comprising at least two conveying channels ( 10, 11 ) for conveying the bar segments; at least one separation wall ( 8 ) separating a first conveying channel ( 10 ) from a second conveying channel ( 11 ); and at least one fixed partition ( 9 ), provided below the wall ( 8 ) and which separates the first channel ( 10 ) from the second channel ( 11 ); the fixed partition ( 9 ) is configured so that, at speed, when a rolled bar is deviated to pass from a direction towards the first channel to a direction towards the second channel, the tail of a first bar segment ( 30 ) advances in the first channel ( 10 ) by passing below the fixed partition ( 9 ), while the head of a second bar segment ( 31 ) after the first segment ( 30 ) advances in the second channel by passing above the fixed partition.

First claim

The invention claimed is:

1. A conveying device for conveying rolled bar segments, continuously exiting from a cutting shear, comprising:
at least two conveying channels for conveying the rolled bar segments, the at least two conveying channels including a first conveying channel and a second conveying channel that are arranged next to one another and have a common base surface,
at least one separation wall for separating said first conveying channel from said second conveying channel, said at least one separation wall being substantially perpendicular to said common base surface,
and at least one fixed partition, provided adjacent to said at least one separation wall and between said at least one separation wall and said common base surface, which separates said first conveying channel from said second conveying channel, said at least one fixed partition having a first portion abutting the common base surface and a second horizontal portion affixed to the first portion that is substantially parallel to said common base surface and distanced from said common base surface, the first portion and the second horizontal portion defining two longitudinal cavities with the common base surface,
such that, at operating speed, when a rolled bar is deviated to pass from a direction towards the first conveying channel to a direction towards the second conveying channel, a tail of a first bar segment cut by the cutting shear advances in the first conveying channel by passing below said horizontal portion and through at least one of the longitudinal cavities while a head of a second bar segment cut after the first bar segment advances in the second conveying channel by passing above said horizontal portion of said at least one fixed partition and distanced from the common base surface.

2. A device according to claim 1 , wherein said at least one fixed partition has a T-shaped cross section.

3. A device according to claim 2 , wherein said at least one fixed partition is provided with the first portion defining a first bulkhead, which is transversal with respect to said base surface common to the first and to the second conveying channel, and with the second horizontal portion defining a second bulkhead arranged above, perpendicular to, and abutting said first bulkhead, whereby at speed the tail of the first bar segment advances in the first conveying channel by initially passing below said second bulkhead, while the head of the second bar segment advances in the second conveying channel by initially passing above said second bulkhead.

4. A device according to claim 3 , wherein said at least one separation wall is rotatable in one direction or in the other above said second bulkhead so as to enlarge an entry section of one of the first and second conveying channels.

5. A device according to claim 1 , wherein said at least one separation wall is movable.

6. A device according to claim 1 , wherein four conveying channels are provided, separated by three separation walls and three corresponding fixed partitions.

7. A device according to claim 6 , wherein a first separation wall and a respective first fixed partition separate the first conveying channel from the second conveying channel; wherein a second separation wall and a respective second fixed partition separate the first conveying channel from a third conveying channel for receiving bar segments to be scrapped; and wherein a third separation wall and a respective third fixed partition separate the second conveying channel from a fourth conveying channel for receiving further bar segments to be scrapped.

8. A device according to claim 1 , wherein said at least one separation wall includes two or more separation walls arranged in a coplanar relationship, and said at least one fixed partition includes two or more fixed partitions arranged in a coplanar relationship parallel to said two or more separation walls.

9. A cutting machine for continuously cutting rolled bars, exiting from a rolling mill, into rolled bar segments, the machine comprising:
a conveying device according to claim 1 ;
a cutting shear for cutting a rolled bar into rolled bar segments;
a switching device for alternately switching a trajectory of the rolled bar to be cut from a direction towards a first conveying channel to a direction towards a second conveying channel.

10. A cutting machine according to claim 9 , wherein the cutting shear comprises two contra-rotating drums equipped with at least one series of blades.

11. A cutting machine according to claim 10 , wherein the two contra-rotating drums are equipped with three series of blades: one central series of blades for carrying out a size cut of the rolled bar segments and two side series of blades for carrying out a scrapping cut.

12. A cutting machine according to claim 11 , wherein at each series of blades there are provided a respective separation wall and a respective fixed partition.

13. A cutting machine according to claim 11 , wherein at least one of the two contra-rotating drums is equipped with at least two bladeless grooves corresponding to the at least two conveying channels.

Assignees

• Danieli Off Mecc

Inventors

• De Luca Andrea
• Nobile Matteo

Classifications

• Y10T83/2209

  Guide · CPC title

• B21D43/285 Primary

  Devices for handling elongated articles, e.g. bars, tubes or profiles (B21D43/282, B21D43/287 take precedence) · CPC title

• B21D43/282

  Discharging crop ends or the like · CPC title

• Y10T83/0448

  With subsequent handling [i.e., of product] · CPC title

• B23D33/02

  Arrangements for holding, guiding, and/or feeding work during the operation · CPC title