EP2000226A1 - Presse améliorée pour extruder des éléments à section métallique non ferreuse - Google Patents

Presse améliorée pour extruder des éléments à section métallique non ferreuse Download PDF

Info

Publication number: EP2000226A1
Authority: EP; European Patent Office
Prior art keywords: motor; extruding; pump; press; extruding press
Prior art date: 2007-06-06
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.): Granted

Application number

EP08010226A

Other languages

German (de)

English (en)

Other versions

EP2000226B1 (fr

Inventor

Valerio Presezzi

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.)

PRESEZZI EXTRUSION SpA

Original Assignee

PRESEZZI EXTRUSION 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.)

2007-06-06

Filing date

2008-06-05

Publication date

2008-12-10

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39764263&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2000226(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2008-06-05 Application filed by PRESEZZI EXTRUSION SpA filed Critical PRESEZZI EXTRUSION SpA

2008-12-10 Publication of EP2000226A1 publication Critical patent/EP2000226A1/fr

2009-10-21 Application granted granted Critical

2009-10-21 Publication of EP2000226B1 publication Critical patent/EP2000226B1/fr

Status Revoked legal-status Critical Current

2028-06-05 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 OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/211—Press driving devices
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C31/00—Control devices, e.g. for regulating the pressing speed or temperature of metal; Measuring devices, e.g. for temperature of metal, combined with or specially adapted for use in connection with extrusion presses

Definitions

the present invention relates to an improved press for extruding non-ferrous metal section members.
the field of the invention is that of pressing apparatus using for extruding section members or profiled elements (such as door profiled elements, motor vehicle profiled elements and son on), starting from non-ferrous metals (such as aluminium, bronze, copper, brass and the like.
the press cylinder fluid (usually oil) is circulated by the pump, in turn driven at constant R.P.M.'s by the electric motor.
the displacement or flow-rate of the pump is changed depending on the press cylinder movement requirements (in particular during the filling of the material to be extruded), while holding the motor R.P.M.'s constant, and by changing the inclination of the pump plate, by means of a specifically designed servo-valve.
the above disclosed construction has the drawback that it requires that a servo-valve be used, which, in addition to being a separated component, susceptible to failure and requiring frequent servicing operations, also requires a dedicated driving system.
a further drawback of the above mentioned construction is the requirement of holding the electric motor in a rated operation range, even in periods in which the pump is in a rest condition, which negatively affects the overall system managing cost.
the main object of the present invention is to provide a novel extruding press for extruding non-ferrous metal section members, which is much more simple than conventional extruding presses and, moreover, comprises a small number of press components.
Another object of the present invention is to provide such an extruding press which, differently from prior like extruding presses, allows to achieve a very high power saving, in particular in driving the pump controlling motor.
the inventive extruding press provides the advantage of eliminating the requirement to include therein a plurality of servo-valves, and the related driving pump, as well as that to precisely control the cylinder driving pump flow-rate.
Yet another advantage of the inventive extruding press is that the cylinder driving pump operating motor is driven only as it is effectively required, while leaving said motor in a rest condition, or at low R.P.M.'s, as the press cylinder is a rest condition, while discriminating the number of driving motors to be used, depending on the contingent operating requirements.
the extruding press 1 of figure 1 which is a conventional type of extruding press, comprises a pressing punch 2 for extruding a non-ferrous metal section member, made, for example, of an aluminium material (not shown).
the pressing or extruding punch 2 is in turn driven by oil-dynamic or hydraulic driving cylinders 3 and 4, therethrough the operating or driving fluid is conveyed, inside a respective driving circuit 5, by a variable displacement pump 6.
variable displacement pump 6 comprises a pump plate 7, the inclination of which is controlled by a respective servo-valve 8, in turn controlled by a driving pump 9, controlled by a dedicated motor 10.
the rotary movement of the pump 6 plate 7 is controlled with constant R.P.M.'s, by a driving motor 11, coupled to the electric mains 13, through a switching assembly 12.
the electric motor 11 is a conventional asynchronous motor, rotatively driving the plate 7 of the pump 6 at a constant revolution number, and accordingly independently from the operating status of the cylinders 3 and 4 of the extruding press 1.
the extruding press according to the invention comprises a pressing or extruding punch 2, in which the hydraulic cylinders 3 and 4 are driven by a fluid conveyed, inside the respective hydraulic circuit 5, by a piston pump 15.
Said piston pump 15 is in turn controlled by a low inertia electric motor 16, in particular a converter three-phase asynchronous motor, having a forced ventilating system and a square motor casing.
said electric motor 16 is a four-pole three-phase asynchronous motor, comprising a square casing 18, an independent radial electro-fan 19, a double-output shaft 26 for coupling an encoder assuring a high operating precision, connectors 20 for the motor brake 25 and for the encoder, insulating elements 21, strengthened by vacuum resins, a low inertia rotor 22, thermal probes 23, having a non-linear variable resistance, arranged in the motor windings, and a low leak magnetic sheet element 24, designed for providing a high electromagnetic efficiency.
the electric motor 16 in particular, is so designed to be coupled by frequency converters (either of a V/f or of a vectorial type) and is adapted to operate like a D.C. motor and brushless servo-motors, so as to provide a greatly improved performance with respect to a conventional asynchronous type of electric motor.
the number of revolutions of the motor 16 is in turn controlled by an inverter 17 coupled to the mains 13.
the flow-rate of the operating fluid to the cylinders 3 and 4 is herein controlled not by the pump 15 which, in this case, has a constant delivery flow-rate, but by the revolution number of the motor 16 driving said pump 15.
said motor 16 which, as stated, is a three-phase asynchronous motor of a type suitable for converters, has a very small inertia, thereby allowing to provide a quick response for quickly changing, if required, the displacement speed of the extruding punch 2, for example in feeding the metal material to be extruded, to properly distinguish this feeding step from the extruding step of the section member, performed with a constant extruding speed.
a Table is herein enclosed, showing the power drain of a conventional motor 11 and of a low inertia motor 16, as the flow-rate and pressure of the pumps 6 and 15 change depending on the fluid delivery required by the press oil-dynamic cylinders 3 and 4.
the pumps 11 and 16 of the extruding systems 1 and 2 respectively operate at 690 operating cycles/day, for a period of time of 15 sec during the extruding material loading step, 105 sec in the extruding step proper, and with 1 h of machine rest time.
the motor 10 of the pump 9 of the servo-valve 8 of the system of figure 1 operates for 24 h/day.
the motors 11 and respectively 16 are herein provided in a number of three, each having a power of 135 kW, for controlling each respectively a respective pump 6 and 15.
the motor 10 has a power of about 25 kW.
Prior art Consumed Power I X 70 I X 130 I X 25 (kW) II X 70 II X 130 II X 25 motors 11 III X 70 III X 25 III X 25 Total consumed power (kW) by the motors 11 210 285 75 Power consume/day (kWh) 603 5.700 75 360 6.738
the power saving achieved by the system of figure 2 corresponds to about 14%/day.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Extrusion Of Metal (AREA)
Press Drives And Press Lines (AREA)
Superconductors And Manufacturing Methods Therefor (AREA)
Control Of Presses (AREA)
Fluid-Pressure Circuits (AREA)
Powder Metallurgy (AREA)

EP08010226A 2007-06-06 2008-06-05 Presse améliorée pour extruder des éléments à section métallique non ferreuse Revoked EP2000226B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT001153A ITMI20071153A1 (it)	2007-06-06	2007-06-06	Pressa di tipo migliorato per l'estrusione di profili di metalli non ferrosi.

Publications (2)

Publication Number	Publication Date
EP2000226A1 true EP2000226A1 (fr)	2008-12-10
EP2000226B1 EP2000226B1 (fr)	2009-10-21

Family

ID=39764263

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP08010226A Revoked EP2000226B1 (fr)	2007-06-06	2008-06-05	Presse améliorée pour extruder des éléments à section métallique non ferreuse

Country Status (5)

Country	Link
EP (1)	EP2000226B1 (fr)
AT (1)	ATE446148T1 (fr)
DE (1)	DE602008000228D1 (fr)
ES (1)	ES2335716T3 (fr)
IT (1)	ITMI20071153A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102166829A (zh) *	2010-02-25	2011-08-31	Sms米尔股份有限公司	用于制造由非铁金属构成的型材的挤压机
WO2013028558A2 (fr) *	2011-08-24	2013-02-28	Oldenburg Goup Incorporated	Foreuse jumbo mobile à alimentation entièrement électrique
WO2016199055A1 (fr) *	2015-06-11	2016-12-15	Turla S.R.L.	Presse à extrusion pour sections de métal non ferreux
CN106862291A (zh) *	2017-03-31	2017-06-20	江苏瑞格新材料有限公司	一种合金钢成形装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3649816A (en) *	1970-11-09	1972-03-14	Allegheny Ludlum Ind Inc	Control system for hydraulic extrusion press
JPH01309718A (ja) *	1988-06-08	1989-12-14	Nippon Alum Mfg Co Ltd	押出し成形速度制御装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4214464A (en)	1978-12-28	1980-07-29	Alexandrov Valery M	Apparatus for controlling the thickness of rolled products
BG32330A1 (en)	1980-04-29	1982-07-15	Petrov	Method for pressing of articles and apparatus for its realising

2007
- 2007-06-06 IT IT001153A patent/ITMI20071153A1/it unknown
2008
- 2008-06-05 DE DE602008000228T patent/DE602008000228D1/de active Active
- 2008-06-05 AT AT08010226T patent/ATE446148T1/de not_active IP Right Cessation
- 2008-06-05 ES ES08010226T patent/ES2335716T3/es active Active
- 2008-06-05 EP EP08010226A patent/EP2000226B1/fr not_active Revoked

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3649816A (en) *	1970-11-09	1972-03-14	Allegheny Ludlum Ind Inc	Control system for hydraulic extrusion press
JPH01309718A (ja) *	1988-06-08	1989-12-14	Nippon Alum Mfg Co Ltd	押出し成形速度制御装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102166829A (zh) *	2010-02-25	2011-08-31	Sms米尔股份有限公司	用于制造由非铁金属构成的型材的挤压机
EP2361700A1 (fr) *	2010-02-25	2011-08-31	SMS Meer GmbH	Extrudeuse de fabrication de profilés en métal non ferreux
JP2011177014A (ja) *	2010-02-25	2011-09-08	Sms Meer Gmbh	非鉄金属から成形物を製造するための金属押出加工機
US9211577B2 (en)	2010-02-25	2015-12-15	Sms Meer Gmbh	Extrusion press for making profiles of nonferrous metal
CN102166829B (zh) *	2010-02-25	2016-02-24	Sms米尔股份有限公司	用于制造由非铁金属构成的型材的挤压机
WO2013028558A2 (fr) *	2011-08-24	2013-02-28	Oldenburg Goup Incorporated	Foreuse jumbo mobile à alimentation entièrement électrique
WO2013028558A3 (fr) *	2011-08-24	2013-05-10	Oldenburg Goup Incorporated	Foreuse jumbo mobile à alimentation entièrement électrique
WO2016199055A1 (fr) *	2015-06-11	2016-12-15	Turla S.R.L.	Presse à extrusion pour sections de métal non ferreux
CN106862291A (zh) *	2017-03-31	2017-06-20	江苏瑞格新材料有限公司	一种合金钢成形装置

Also Published As

Publication number	Publication date
EP2000226B1 (fr)	2009-10-21
ES2335716T3 (es)	2010-03-31
ITMI20071153A1 (it)	2008-12-07
DE602008000228D1 (de)	2009-12-03
ATE446148T1 (de)	2009-11-15

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