EP3024603B1 - Rolling apparatus for rolled products - Google Patents

Rolling apparatus for rolled products Download PDF

Info

Publication number: EP3024603B1
Authority: EP; European Patent Office
Prior art keywords: guide; rolling; marking; rolled product; rolling apparatus
Prior art date: 2013-07-26
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Active

Application number

EP14758662.2A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP3024603A1 (en

Inventor

Salvatore CAPRA

Tiziano DE GIORGIO

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Danieli and C Officine Meccaniche SpA

Original Assignee

Danieli and C Officine Meccaniche SpA

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2013-07-26

Filing date

2014-07-23

Publication date

2017-11-01

2014-07-23 Application filed by Danieli and C Officine Meccaniche SpA filed Critical Danieli and C Officine Meccaniche SpA

2016-06-01 Publication of EP3024603A1 publication Critical patent/EP3024603A1/en

2017-11-01 Application granted granted Critical

2017-11-01 Publication of EP3024603B1 publication Critical patent/EP3024603B1/en

Status Active legal-status Critical Current

2034-07-23 Anticipated expiration legal-status Critical

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Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
- B21C51/005—Marking devices

Definitions

the present invention concerns a rolling apparatus comprising a marking device to mark long rolled products, usable in the iron and steel industry to indelibly mark alphanumerical characters and/or graphic symbols on products exiting from a rolling stand.
the invention also concerns a guide device of said rolling apparatus, provided with the marking device.
ink has the disadvantage, however, that with the passage of time, the marking tends to fade or disappears altogether. Moreover, if they are done in relief, the markings can create problems the moment the marked products are used, for example when these consist of threaded bars. Indeed, in this case, the markings can create interference in possible screwing or play.
Document FR 2.191.480 describes a marking device for rolled products, associated during use to a rolling stand, which provides a specific marking cylinder with autonomous drive, which has on it in relief the marking characters to be applied on the rolled product.
the solution of FR'480 provides that the marking occurs in a position and a time distinct from that of rolling, with a different, independent and separate machine; this machine therefore not only requires an autonomous drive, but also requires movement, guide, centering, stabilizing and support elements, all separate and autonomous with respect to the rolling stand.
One purpose of the present invention is to make a rolling apparatus with a marking device to mark in the line, and in a permanent and indelible manner, rolled products, in particular long rolled products such as bars, round pieces, rods or other similar products, both smooth and threaded, which is easily insertable in the line immediately downstream of a rolling stand and which does not require a particular space and/or a particular source of power.
Another purpose of the present invention is to make a rolling apparatus with a marking device to mark rolled products that uses as much as possible rolling and/or guide members already present in a rolling line, and that reduces to a minimum the need for dedicated members, structures and commands.
Another purpose of the present invention is to make a rolling apparatus with a marking device which gives the result of a permanent marking that does not have a negative influence on the subsequent use of the rolled products.
Another purpose of the present invention is to make a rolling apparatus with a marking device that allows to mark said rolled products automatically and cyclically, when they are still hot, that is, at a temperature higher than several hundred degrees Celsius.
Another purpose is to reduce times and costs for maintenance and substitution operations.
the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
a rolling apparatus with a marking device to mark rolled products comprises at least a marking member.
the marking member is mounted on the periphery of a rotatable member, in particular a roll, of a guide device located downstream of a rolling stand of the rolled product that is to be marked.
the marking member comprises a marking ring, mounted on the guide roll located at the exit of the rolling stand, which marking ring carries in relief, on its external peripheral surface, the symbols and/or alphanumerical characters to be marked on the rolled product.
the marking member has no autonomous power and is suitable to be made to rotate, together with the guide roll on which it is mounted, by the rolled product exiting from the rolling stand.
the marking member exploits the alignment and position of the rolled product to be marked determined by the rolling stand and by the guide rolls disposed immediately at the exit from the rolling stand.
the correct positioning of the guide rolls on the basis of shape and size of the rolled product automatically also determines the consequent correct positioning of the marking member with respect to the rolled product, without requiring any operation of adjustment and positioning.
a rolling apparatus comprises a marking device 10 to mark a rolled product 11, for example a threaded metal bar, exiting from a rolling stand 12, for example the last of a rolling train of the known type and with two opposite rolling cylinders 13.
a marking device 10 to mark a rolled product 11, for example a threaded metal bar, exiting from a rolling stand 12, for example the last of a rolling train of the known type and with two opposite rolling cylinders 13.
the marking device 10 is installed on a guide device 14, located as near as possible to the exit of the rolling stand 12.
the guide device 14 is, for example, substantially similar to the one described in the application for a patent of industrial invention UD2011A000175 filed on 02.11.2011 by the Applicant, which is incorporated herewith for reference.
the guide device 14 comprises a first pair of guide rolls 15 ( fig. 2 ) with a vertical axis and coplanar with respect to each other, and a second pair of guide rolls 16 ( fig. 1 ) with a horizontal axis and coplanar with respect to each other.
the guide rolls 15 and 16 are mounted idle on respective axes of rotation.
the diameters of the guide rolls 15 and 16 and the interaxis of the guide rolls of each pair which can be adjusted, are chosen so that the four guide rolls 15 and 16 are constantly in contact with the rolled product 11 that passes between them, but without exerting any further rolling on the rolled product 11. In this way it is the rolled product 11 itself that makes the guide rolls 15 and 16 rotate.
the rolled product 11 When it exits from the rolling stand 12 and passes through the guide device 14, the rolled product 11 still has a rather high temperature, for example from about 800°C to about 900°C.
the marking device 10 comprises a marking member 17 ( figs. 3 to 7 ), which in the example given here consists of a marking ring 18, which on the external peripheral surface carries in relief the symbols and alphanumerical characters 19 that are to be marked in a permanent and indelible manner on the rolled product 11.
the symbols and alphanumerical characters 19 protrude by some tenths of a millimeter, for example from 0.3 mm to 3 mm, from the external peripheral surface of the marking ring 18.
the marking ring 18 is mounted on one of the two guide rolls 15.
At least one of the guide rolls 15, that is, the one on which the marking ring 18 is mounted, is formed by two guide rings 20 and 21 coupled with each other and each having a flared surface suitable to contact the rolled product 11.
the upper guide ring 20 also comprises a cylindrical part 22 on which the marking ring 18 is precision coupled.
a central tube 23 is disposed inside the two guide rings 20 and 21 and is provided with an upper flange 24. The central tube 23 is coupled by bolts 25 to a lower flange 26 and clamps the marking ring 18 to the two guide rings 20 and 21.
marking proper that is, the pressure of the symbols and alphanumerical characters 19 in relief on the rolled product 11, could cause the latter to slow down.
the first pair of guide rolls 15 of the guide device 14 is located as near as possible to the rolling stand 12, at the limit of interference, so that the speed of the rolled product 11 is as stable as possible.
the possible problems of rejection are limited, which the rolled product 11 could have on entering in the guide device 14, and so possible blockages are avoided.
clamping tie-rods 27 ( fig. 1 ), of the known type, present in the device guide 14, are conveniently located between the two pairs of guide rolls 15 and 16.
the marking device 10 disposed in association with one of the guide rolls 15 thus allows to mark any type of rolled product 11, including threaded bars, for example with a diameter from 19 mm to 32 mm and more, since the resulting marking, precisely because it is done in bas-relief, does not interfere with the threaded part of the bars and therefore does not have a negative influence on their use.

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Metal Rolling (AREA)
Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Making Paper Articles (AREA)
Treatment Of Fiber Materials (AREA)

EP14758662.2A 2013-07-26 2014-07-23 Rolling apparatus for rolled products Active EP3024603B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
IT000100A ITUD20130100A1 (it)	2013-07-26	2013-07-26	Dispositivo di marcatura per marcare prodotti laminati
PCT/IB2014/063343 WO2015011656A1 (en)	2013-07-26	2014-07-23	Rolling apparatus for rolled products

Publications (2)

Publication Number	Publication Date
EP3024603A1 EP3024603A1 (en)	2016-06-01
EP3024603B1 true EP3024603B1 (en)	2017-11-01

Family

ID=49263392

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP14758662.2A Active EP3024603B1 (en)	2013-07-26	2014-07-23	Rolling apparatus for rolled products

Country Status (3)

Country	Link
EP (1)	EP3024603B1 (it)
IT (1)	ITUD20130100A1 (it)
WO (1)	WO2015011656A1 (it)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB456970A (en) *	1935-04-15	1936-11-16	William Eckford	Improvements in and relating to the marking by embossing of pipes of lead and lead alloys
US2674941A (en) *	1947-09-20	1954-04-13	Bethlehem Steel Corp	Rotary marking device
US3638712A (en)	1970-08-17	1972-02-01	United States Steel Corp	Billet-marking apparatus and method of marking
JPS5241689B2 (it)	1971-10-22	1977-10-20
FR2191480A5 (it) *	1972-06-30	1974-02-01	Nippon Steel Corp
DE2654152C2 (de) *	1976-11-30	1982-08-19	Estel Hoesch Werke Ag, 4600 Dortmund	Einrichtung zum Signieren von Werkstücken

2013
- 2013-07-26 IT IT000100A patent/ITUD20130100A1/it unknown
2014
- 2014-07-23 WO PCT/IB2014/063343 patent/WO2015011656A1/en not_active Ceased
- 2014-07-23 EP EP14758662.2A patent/EP3024603B1/en active Active

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number	Publication date
ITUD20130100A1 (it)	2015-01-27
EP3024603A1 (en)	2016-06-01
WO2015011656A1 (en)	2015-01-29

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