US20090007621A1 - Method to Feed Bars to a Working Machine and Relative Device - Google Patents

Method to Feed Bars to a Working Machine and Relative Device Download PDF

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Publication number
US20090007621A1
US20090007621A1 US12/281,345 US28134507A US2009007621A1 US 20090007621 A1 US20090007621 A1 US 20090007621A1 US 28134507 A US28134507 A US 28134507A US 2009007621 A1 US2009007621 A1 US 2009007621A1
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US
United States
Prior art keywords
bars
drawing assembly
loading
magnetic means
bar
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.)
Abandoned
Application number
US12/281,345
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English (en)
Inventor
Giorgio Del Fabro
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.)
MEP Macchine Elettroniche Piegatrici SpA
Original Assignee
MEP Macchine Elettroniche Piegatrici 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.)
Filing date
Publication date
Application filed by MEP Macchine Elettroniche Piegatrici SpA filed Critical MEP Macchine Elettroniche Piegatrici SpA
Assigned to M.E.P. MACCHINE ELETTRONICHE PIEGATRICI SPA reassignment M.E.P. MACCHINE ELETTRONICHE PIEGATRICI SPA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DEL FABRO, GIORGIO
Publication of US20090007621A1 publication Critical patent/US20090007621A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B21F23/005—Feeding discrete lengths of wire or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/006—Feeding elongated articles, such as tubes, bars, or profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B21F23/005—Feeding discrete lengths of wire or rod
    • B21F23/007—Feeding discrete lengths of wire or rod using pick-up means, e.g. for isolating a predefined number of wires from a bundle

Definitions

  • the present invention concerns a method to feed bars to a working machine and the relative feeder device.
  • the working machine to which the invention refers is advantageously a stirrup-making machine, a bending machine, a shaping machine, a tying machine or other type of analogous or comparable machine.
  • the feeder device is suitable to pick up, in a substantially automatic manner, at least one bar at a time from a bundle of bars, and to unload it into a pre-loading position so as to form a store with a desired number of bars, and then to load, substantially in a single operation, possibly comprising one or more movements, all the bars that make up the store into the drawing assembly of said working machine, so as to allow them to be sent for working, while the feeder device can start a new cycle to pick up bars from the bundle and form the store.
  • Machines for working bars are known, which work one or more bars at a time, for example to achieve shaped pieces for the building trade or other type of product.
  • the machines that use pre-sheared bars normally have one or more feed zones where a bundle is prepared, from which the bars to be sent to the machine are picked up on each occasion.
  • the International Patent application WO 2005/080021 in the name of the Applicant, describes a feeder device comprising first magnetic means that separate an end segment of a plurality of bars from a bundle, and dispose said end segments on a plane raised with respect to said bundle, and second magnetic means which pick up, from the first magnetic means, one bar at a time from among the plurality of bars and unload it in a desired release position, to be more exact, in the drawing assembly of the working machine, so that said bar can be sent for working.
  • This device although extremely efficient, has a limitation in those cases, very frequent, where the working machine is disposed to work several bars simultaneously, for example from 5 to 10, and is therefore equipped with a drawing assembly, for example with rollers or grippers, configured to accommodate the plurality of bars and to send them simultaneously for working.
  • the known device must sequentially perform a plurality of cycles to pick up one bar at a time and deposit it in the drawing assembly, but then it must obviously stop for the whole time while the bars are being translated by the drawing assembly towards the working machine.
  • Purpose of the present invention is therefore to increase the efficiency of a feeder device of the type indicated above so as to reduce the waiting times to obtain the loading of the desired number of bars in the relative drawing assembly.
  • the feeder device comprises first magnetic means, disposed substantially in cooperation with an end part, or near the end, of the bundle of bars from which the bar or bars are to be picked up, and second magnetic means able to cooperate with said first magnetic means in order to selectively pick up the bar or bars to be sent to the machine.
  • the first magnetic means are associated with first movement means able to move them so as to raise the end parts of a plurality of bars with respect to the bundle.
  • the second magnetic means are associated with second movement means able to move them in a direction parallel, slant-wise or curvilinear with respect to the bars whose ends are held raised by the first magnetic means; the second magnetic means are suitable to pick up from the first magnetic means, selectively, the end part of one or more bars, advantageously one at a time, and to displace it and then release it in the desired position, in order to prepare it to be fed to the working machine.
  • the second magnetic means are able to sequentially unload a plurality of bars, picked up one at a time from the first magnetic means, in a pre-loading position so as to form a store with said plurality of bars.
  • the pre-loading and store-formation position is in proximity with the loading position defined by the space between the rollers of the drawing assembly.
  • the bars are then loaded, substantially with a single operation, all together inside the drawing assembly, which is then activated to remove the bars from the bundle and send them for working.
  • the store can already have been formed, so that a new plurality of bars, already ready, can be immediately loaded into the drawing assembly, substantially without any waiting times.
  • the position of forming the store of bars to be loaded into the drawing assembly is substantially parallel but below the loading position into the drawing assembly.
  • the loading of the bars that form the store in the drawing assembly provides first a lifting movement to dispose the bars in an aligned position but external with respect to the position of insertion into the drawing assembly, and then a lateral translation to load said bars into the drawing assembly.
  • the store is formed in a position aligned and external with respect to the loading position into the drawing assembly, and the insertion of the bars into the drawing assembly provides only a lateral translation.
  • FIGS. 1-4 show a front view of one form of embodiment of the feeder device for bars according to the present invention in a sequence of its operating cycle
  • FIG. 5 shows a lateral view of the feeder device in FIGS. 1-4 used to remove bars from a bundle
  • FIG. 6 shows a front view of another embodiment of the feeder device for bars according to the present invention.
  • FIG. 7 shows a lateral view of the device in FIG. 6 used to remove bars from a bundle.
  • a feeder device 10 for bars 11 is suitable to be located upstream of a working machine such as a stirrup-making machine, shaping machine, bending machine, tying machine or any other machine of a similar type or even different.
  • a working machine such as a stirrup-making machine, shaping machine, bending machine, tying machine or any other machine of a similar type or even different.
  • the attached figures show a drawing assembly or drawer 27 , which in this case consists of a pair of rollers, respectively upper roller 26 a , and lower roller 26 b . It comes within the scope of the invention that the drawing assembly 27 may consist of a gripper with alternating movement, or can be of any other type.
  • the feeder device 10 is suitable to operate on bars 11 substantially of any length and/or diameter, guaranteeing in any case to pick up the bars in an orderly and efficient manner, and to count them without mistakes.
  • the device 10 is suitable to pick up, from a bundle of bars 12 lying at least partly in a housing seating 30 (see FIG. 7 ), one or more bars 11 at a time to send to the working machine.
  • the housing seating 30 can comprise two, three or more pockets, possibly movable laterally, inside each of which bars 11 of the same size are disposed, but different from those in the other pockets.
  • the feeder device 10 is movable with respect to the pockets, or other housing seating for the bars 11 , in order to move selectively according to the type or size of bars 11 to be picked up.
  • the feeder device 10 is mounted in this case on a supporting frame 18 and comprises first magnetic means 13 consisting of a first magnetic or electromagnetic element 14 disposed advantageously during use in proximity with one end of the bars 11 of the bundle 12 .
  • the first magnetic means 13 comprise two or more magnetic or electromagnetic elements 14 , disposed at several distinct points on the length of the bars 11 , advantageously near their front ends.
  • the first magnetic element 14 is located with a direction prevalently transverse to the longitudinal development of the bars 11 lying in the respective seating 30 , and advantageously has a width such as to cover a considerable part of the width of the bundle 12 .
  • the first magnetic element 14 is mounted on an arm 31 associated with a first actuator 15 , for example of the fluid-dynamic type, which achieves a movement thereof, in this case a substantially circular movement—direction 72 ( FIG. 1 ).
  • the magnetic element 14 can be correctly positioned in correspondence with the desired bundle 12 from which the bars 11 are to be removed.
  • the magnetic element 14 is lowered towards the bundle 12 , by means of the first actuator 15 , to take the lower face thereof, comprising the attractive surface, to a position such as to exert an effect of magnetic attraction on the ends of the bars 11 located at the highest part of the bundle 12 . Subsequently, the magnetic element 14 is returned upwards, magnetically lifting the ends of one layer of bars 11 disposed adjacent to each other so as to form substantially a plane ( FIG. 1 ).
  • the first magnetic element 14 is mounted on the relative arm 31 by means of an articulated joint 42 , which allows it a certain freedom of oscillation in order to facilitate the picking up of the bars 11 even if the pockets have a curved and/or shaped bottom, and even if only a few residual bars 11 have remained at the bottom of the pockets.
  • second magnetic means 21 are activated, which comprise a second magnetic element 22 mounted at the end of a second actuator 23 mounted, in turn, on the supporting frame 18 ( FIG. 2 ).
  • the second magnetic means 21 comprise two or more magnetic elements 22 able to act at two or more distinct points on the length of the bars 11 .
  • the second actuator 23 is able to act in a direction 71 , substantially perpendicular to the longitudinal development of the bars 11 , so as to move, in this case horizontally, the second magnetic element 22 from a first, advanced pick-up position, wherein it moves into cooperation with the attractive surface of the first magnetic element 14 in order to pick up one or more bars 11 from it, advantageously one bar 11 at a time, to a second retracted release position.
  • the second position according to the characteristic of the invention, it releases the end of the specific bar 11 , which it has picked up from the first magnetic element 14 , in correspondence with a supporting surface 61 of a thruster element 65 of an accumulation assembly 60 .
  • the bar 11 is released due to the interference on the bar 11 exerted by a stop element 50 during the movement of retraction of the second magnetic element 22 .
  • the position of the stop element 50 can advantageously be regulated at least in height according to the diameter of the bars 11 being worked, so as to create a housing made to size for said bars 11 .
  • the thruster element 65 comprises a front edge 62 facing upward, the upper end 63 of which is conformed as a lead-in slide to help the bars 11 to dispose themselves on the supporting surface 61 , which in this case is substantially horizontal.
  • the supporting surface 61 of the thruster element 65 is disposed substantially parallel but lying on a plane below the position of the loading plane for the bars 11 into the drawing assembly 27 , which substantially corresponds to the upper surface of the lower roller 26 b.
  • the thruster element 65 When the first bar 11 has been released, the thruster element 65 performs a first movement towards the inside—direction 70 —to move the bar 11 to an inner waiting position, defined by the position of a substantially vertical abutment plate 64 , and then returns backwards to position itself in a position to receive a new bar 11 .
  • the abutment plate 64 is substantially positioned flush with the lateral edge of the rollers 26 a , 26 b of the drawing assembly 27 .
  • the stop element 50 is then moved vertically to define the housing made to size for the bars 11 .
  • the drive of the thruster element 65 is obtained by activating a substantially horizontal actuator 66 .
  • the second magnetic element 22 Simultaneously with, or immediately after, the movement of the thruster element 65 , the second magnetic element 22 performs a new cycle of picking up a bar 11 and unloading it onto the supporting surface 61 of the thruster element 65 when the latter has returned to its external start-of-cycle position.
  • the thruster element 65 returns towards the inside, that is, towards the rollers 26 a , 26 b , so as to locate the new bar 11 in a stand-by position near the abutment plate 64 and adjacent to the first bar 11 .
  • the cycle to pick up, unload and laterally translate the bars 11 can be repeated a desired number of times so as to form the desired store, also according to the diameter of the bars 11 , the configuration of the rollers 26 a , 26 b , and the requirements of the machine and the working cycle.
  • the whole accumulation assembly 60 first performs a movement upwards—direction 73 —so as to locate the bars 1 in a position aligned with the upper surface of the lower roller 26 b , immediately above the upper end of the abutment plate 64 .
  • the upper roller 26 a is then positioned in the correct position to create a guide channel according to the diameter of the bars 11 .
  • a mobile abutment is provided, able to create said guide channel.
  • the accumulation assembly 60 then performs a movement of lateral translation towards the rollers 26 a , 26 b , so as to thrust the bars 11 all together between the rollers 26 a , 26 b.
  • an abutment roller 67 is advantageously present, which prevents the bars 11 from sliding beyond the loading position between the rollers 26 a , 26 b.
  • the upper roller 26 a closes on the lower roller 26 b and the operation to remove the loaded bars 11 is started, and they are sent for working.
  • the accumulation assembly 60 returns to its lowered, end-of-cycle position ( FIG. 1 ) and the feeder device 10 can start a new cycle to form the store, as previously described.
  • the accumulation assembly 60 when the formation of the store is terminated with the desired number of bars 11 , the accumulation assembly 60 performs only a movement of lateral translation to insert the bars 11 between the rollers 26 a , 26 b , and then returns to its external position so as to allow on the one hand the drawing assembly 27 to be activated so as to feed the bars 11 to the working machine, and on the other hand to prepare a new store-forming cycle to start.
  • a guide roller 39 is shown, in this case solid with the stop element 50 and disposed immediately above the lower roller 26 a of the drawing assembly, the function of which is to guide the movement of the bars 11 when they are translated by the accumulation assembly 60 to the loading position between the rollers 26 a , 26 b.
  • the position of the guide roller 39 can be regulated at least in height according to the diameter of the bars 11 being worked.
  • the abutment plate 164 is associated with a positioning actuator, and remains stationary during the whole cycle to form the store of bars 11 , so as to define the stop position thereof near the gap between the rollers 26 a , 26 b of the drawing assembly 27 ; during the loading step, the abutment plate 164 is raised, or lowered, allowing the bars 11 to be inserted in a removal position between the rollers 26 a , 26 b.
  • header element 37 can be seen, associated with a movement actuator 38 .
  • the function of the header element 37 is to align the bars 11 with respect to each other, by acting repeatedly against the relative ends, after they have been picked up by the first magnetic element 14 and are kept raised with respect to the bundle.
  • the header element 37 by selective activation of the movement actuator 38 , performs some beating cycles against the ends of the bars 11 , equalizing their longitudinal disposition so as to facilitate the subsequent step of loading into the drawing assembly 27 and the working to be carried out afterwards.
  • the heading operation can be performed both when the bars 11 are held raised by the first magnetic means 13 , and also on bars 11 which have already been unloaded onto the accumulation assembly 60 .
  • a sensor may be provided which signals the fact that the second magnetic element 22 is performing a purposeless travel without meeting bars 11 , giving consent for a new descent of the first magnetic element 14 towards the bundle of bars 11 to perform a new pick-up.
  • Another variant may provide that there are fixed stop elements present above the first magnetic element 14 , which allow to discharge the bars 11 , and make them fall back into the relative bundle, that have remained gripped on said first magnetic element 14 once the working cycle of the machine has been stopped. This discharge is obtained by raising the first magnetic element 14 by an extra travel beyond said stop elements. The discharge of the bars 11 can also be obtained, in the event of electromagnetic elements being used, by temporarily de-activating electric feed to said first magnetic element 14 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • Specific Conveyance Elements (AREA)
  • Feeding Of Workpieces (AREA)
  • De-Stacking Of Articles (AREA)
US12/281,345 2006-03-07 2007-03-02 Method to Feed Bars to a Working Machine and Relative Device Abandoned US20090007621A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITUD2006A000050 2006-03-07
IT000050A ITUD20060050A1 (it) 2006-03-07 2006-03-07 Procedimento di alimentazione di barre ad una macchina di lavorazione e relativo dispositivo
PCT/EP2007/052006 WO2007101823A1 (en) 2006-03-07 2007-03-02 Method to feed bars to a working machine and relative device

Publications (1)

Publication Number Publication Date
US20090007621A1 true US20090007621A1 (en) 2009-01-08

Family

ID=36926341

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/281,345 Abandoned US20090007621A1 (en) 2006-03-07 2007-03-02 Method to Feed Bars to a Working Machine and Relative Device

Country Status (12)

Country Link
US (1) US20090007621A1 (da)
EP (1) EP1996348B1 (da)
CN (1) CN100586606C (da)
BR (1) BRPI0707079B1 (da)
DE (1) DE602007001684D1 (da)
DK (1) DK1996348T3 (da)
ES (1) ES2330487T3 (da)
HR (1) HRP20090559T1 (da)
IT (1) ITUD20060050A1 (da)
PL (1) PL1996348T3 (da)
RU (1) RU2440207C2 (da)
WO (1) WO2007101823A1 (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600084716A1 (it) * 2016-08-11 2018-02-11 Buffoli Transfer S P A Dispositivo per separare singole barre da un fascio
US10625332B2 (en) * 2016-06-13 2020-04-21 M.E.P. Macchine Elettroniche Piegatrici S.P.A. Apparatus and method for handling metal products
US20230241666A1 (en) * 2020-06-17 2023-08-03 Evg Entwicklungs- U. Verwertungs-Gesellschaft M.B.H. Device and method for feeding cross wires in a wire mesh welding machine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20080049A1 (it) * 2008-03-07 2009-09-08 Piegatrici Macch Elettr Dispositivo alimentatore per barre e relativo procedimento di alimentazione
ITUB20155189A1 (it) * 2015-10-23 2017-04-23 Oscam S R L Impianto per alimentare barre metalliche in numero controllato ad una macchina operatrice
ITUB20161172A1 (it) * 2016-02-29 2017-08-29 Schnell Spa Metodo e apparecchiatura per alimentare automaticamente elementi di foggia allungata
IT201600132141A1 (it) * 2016-12-29 2018-06-29 M E P Macch Elettroniche Piegatrici Spa Apparato e metodo di manipolazione di barre, in particolare barre metalliche
AR113669A1 (es) 2017-12-22 2020-05-27 A C M S R L Automatismi Costruzioni Mecc Aparato y método de elaboración de barras

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648770A (en) * 1981-12-24 1987-03-10 Sms Schloemann-Siemag Aktiengesellschaft Stacking profile elements in nested groups
US5345806A (en) * 1989-12-29 1994-09-13 Amada Company, Limited Device for manipulating sheet metal pieces
US6808359B2 (en) * 2002-04-26 2004-10-26 Schnell S.P.A. Method and apparatus for automatically feeding metal profiles in bar form in systems for machining said profiles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1144569B (de) * 1955-05-12 1963-02-28 Asea Ab Vorrichtung zum Einzelentnehmen von langgestreckten, gleichliegend gelagerten Werkstuecken aus magnetisierbarem Werkstoff
AT406556B (de) * 1996-02-16 2000-06-26 Boehler Edelstahl Verfahren und vorrichtung zur vereinzelung und weiterbearbeitung von metallstäben
ITBO20020241A1 (it) * 2002-04-26 2003-10-27 Schnell Spa Metodo e apparecchiatura per alimentare automaticamente profilati metallici in barre in macchine per la lavorazione di tali profilati
ITUD20040012A1 (it) * 2004-01-23 2004-04-23 Piegatrici Macch Elettr Dispositivo alimentatore per barre e relativo procedimento di alimentazione

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648770A (en) * 1981-12-24 1987-03-10 Sms Schloemann-Siemag Aktiengesellschaft Stacking profile elements in nested groups
US5345806A (en) * 1989-12-29 1994-09-13 Amada Company, Limited Device for manipulating sheet metal pieces
US6808359B2 (en) * 2002-04-26 2004-10-26 Schnell S.P.A. Method and apparatus for automatically feeding metal profiles in bar form in systems for machining said profiles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10625332B2 (en) * 2016-06-13 2020-04-21 M.E.P. Macchine Elettroniche Piegatrici S.P.A. Apparatus and method for handling metal products
IT201600084716A1 (it) * 2016-08-11 2018-02-11 Buffoli Transfer S P A Dispositivo per separare singole barre da un fascio
WO2018029614A3 (en) * 2016-08-11 2018-05-31 Buffoli Transfer S.P.A. Device for separating single bars from a bundle
US20230241666A1 (en) * 2020-06-17 2023-08-03 Evg Entwicklungs- U. Verwertungs-Gesellschaft M.B.H. Device and method for feeding cross wires in a wire mesh welding machine

Also Published As

Publication number Publication date
BRPI0707079B1 (pt) 2019-05-14
HRP20090559T1 (en) 2009-11-30
CN101394956A (zh) 2009-03-25
RU2008139608A (ru) 2010-04-20
RU2440207C2 (ru) 2012-01-20
WO2007101823A1 (en) 2007-09-13
DE602007001684D1 (de) 2009-09-03
DK1996348T3 (da) 2009-11-23
ITUD20060050A1 (it) 2007-09-08
EP1996348A1 (en) 2008-12-03
EP1996348B1 (en) 2009-07-22
ES2330487T3 (es) 2009-12-10
PL1996348T3 (pl) 2009-12-31
BRPI0707079A2 (pt) 2011-04-19
CN100586606C (zh) 2010-02-03

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AS Assignment

Owner name: M.E.P. MACCHINE ELETTRONICHE PIEGATRICI SPA, ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DEL FABRO, GIORGIO;REEL/FRAME:021491/0017

Effective date: 20080814

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION