EP2261436A2 - Système et méthode de fabrication d'une bande en métal entailleé - Google Patents

Système et méthode de fabrication d'une bande en métal entailleé Download PDF

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Publication number
EP2261436A2
EP2261436A2 EP10165758A EP10165758A EP2261436A2 EP 2261436 A2 EP2261436 A2 EP 2261436A2 EP 10165758 A EP10165758 A EP 10165758A EP 10165758 A EP10165758 A EP 10165758A EP 2261436 A2 EP2261436 A2 EP 2261436A2
Authority
EP
European Patent Office
Prior art keywords
sheet metal
holes
notched
centers
strips
Prior art date
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.)
Withdrawn
Application number
EP10165758A
Other languages
German (de)
English (en)
Other versions
EP2261436A3 (fr
Inventor
Arsenio Borgnini
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2261436A2 publication Critical patent/EP2261436A2/fr
Publication of EP2261436A3 publication Critical patent/EP2261436A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/42—Gratings; Grid-like panels
    • E04C2/421—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction
    • E04C2/422—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern
    • E04C2/423—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern with notches

Definitions

  • the present patent application for industrial invention relates to a system and method for producing a sheet metal strip with notched edge, in particular for realization of gratings and similar.
  • the flooring of mechanical workshops and industrial plants consists in a sheet metal grating both to generate anti-slip surface and allow wastage, such as chips, oil, grease and similar, to fall under said grating, without hindering the operator who works on the grating.
  • Said gratings are generally made with sections of sheet metal strips, provided with edge with notches that act as housings for crossed elements or also as anti-slip elements.
  • Fig. 1 shows such a type of strip, indicated with numeral (1), which is provided with notching (2) shaped as saw tooth.
  • the strip (1) can have a width (A) ranging from 30 to 40 mm and a variable pitch (p) of notching of approximately 6 mm.
  • the strip (1) is made starting from a sheet metal strip (1) with width (A) that is unwound from a mother reel (B1).
  • One edge of the sheet metal is passed under a hammer (M) provided with punch shaped in such a way to obtain notching (2) by shearing the edge of the sheet metal.
  • the hammer (M) makes an alternate movement in the direction of the vertical arrows (V) and the sheet metal makes an indexed forward travel in the direction of the arrow (F).
  • the notched sheet metal (1) is wound in a final reel (B2) ready to be put on the market.
  • the method according to the known art is impaired by some inconveniences.
  • said method is not versatile, it being impaired by the presence of mother reels (B1) with small dimensions that must respect the width (A) of the strip to be obtained.
  • mother reels (B1) with small dimensions that must respect the width (A) of the strip to be obtained.
  • the known system requires the presence of reels with different dimensions in the warehouse, resulting in high running costs for the warehouse.
  • the method for producing a sheet metal strip with notched edge according to the invention comprises the following steps:
  • a system for producing a strip with notched edge according to the invention is disclosed, which is generally indicated with numeral (100).
  • the system (100) comprises an unwinding unit in which a large-sized mother reel (D1) is disposed, from which a sheet metal (10) is unwound with width (W) equal to a multiple of the width (A) of the notched strip (1) to be obtained.
  • the sheet metal (10) is passed under a hammer (M) provided with a punch that transversally crosses the sheet metal (10).
  • the punch of the hammer (M) is provided with a plurality of shearing projections adapted to generate a plurality of holes or slots (20) on the sheet metal (10).
  • the holes (20) are equally distributed both in the longitudinal and transversal direction of the strip.
  • the centers of the holes are aligned on parallel lines in longitudinal direction and on parallel lines in transversal direction.
  • the holes (20) have a pitch in transversal direction equal to 2A, that is to say the double of the width of the notched strip (1) to be obtained. Instead, the holes (20) have a pitch in longitudinal direction equal to 2p, that is to say the double of the pitch of the notching (2) of the notched strip (1).
  • the pitch of the holes is the distance between the centers of the holes.
  • the punch of the hammer (M) must be provided with a plurality of cutting projections equally spaced along at least a transversal line.
  • the sheet metal (10) makes an indexed forward travel in the direction of the arrow (F).
  • the hammer (M) makes an alternate movement in vertical direction, synchronized with the movement of the sheet metal (10).
  • a shearer Downstream the hammer (M) a shearer is provided, with a plurality of cutting blades (T) disposed in mutually parallel position and adapted to make a longitudinal cut of the sheet metal (10).
  • the cutting blades (T) can be circular saws or band saws.
  • the figure illustrates a cutter in the system where the hammer (M) is provided, it appears evident that the cutter can be provided in a separate system.
  • the sheet metal (10) with holes (20) coming out of the hammer (M) is collected in a large-sized reel and then fed to the cutter.
  • the cutting blades (T) cut the sheet metal (10) in the centers of the holes (20) and in a longitudinal line in intermediate position between the centers of the holes (20). In this way a plurality of notched strips (1) is obtained with notching (2) on one edge of the strip.
  • the number of notched strips (1) is equal to the double of the longitudinal lines of holes (20) obtained in the sheet.
  • the notched strips (1) are collected in corresponding final reels (B2) ready to be put on the market.
  • Fig. 3 illustrates holes (20) with elliptical shape for illustrative purposes, it is evident that the holes of the sheet can have any type of suitable shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Decoration Of Textiles (AREA)
  • Package Frames And Binding Bands (AREA)
EP10165758.3A 2009-06-12 2010-06-11 Système et méthode de fabrication d'une bande en métal entailleé Withdrawn EP2261436A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000029A ITPG20090029A1 (it) 2009-06-12 2009-06-12 Nastro per grigliato antisdrucciolevole e/o dentellato di varie forme e di dimensioni, denominato dentumbra.

Publications (2)

Publication Number Publication Date
EP2261436A2 true EP2261436A2 (fr) 2010-12-15
EP2261436A3 EP2261436A3 (fr) 2014-11-19

Family

ID=42313695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10165758.3A Withdrawn EP2261436A3 (fr) 2009-06-12 2010-06-11 Système et méthode de fabrication d'une bande en métal entailleé

Country Status (2)

Country Link
EP (1) EP2261436A3 (fr)
IT (1) ITPG20090029A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962431A (en) * 1930-08-18 1934-06-12 Jefferson Electric Co Method for making core laminations
US3491437A (en) * 1968-05-06 1970-01-27 Allegheny Ludlum Steel Scrapless method of stamping e laminations
FR2709995B1 (fr) * 1993-09-17 1995-12-01 Atea Procédé de découpage de bandes d'acier bore assemblées en cellules.
US20060218872A1 (en) * 2005-03-31 2006-10-05 Bigott James W Non-slip floor grating and method of manufacturing

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
ITPG20090029A1 (it) 2009-09-11
EP2261436A3 (fr) 2014-11-19

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