EP0835702A1 - Dispositif de coupe et de mise en forme de barres en acier, notamment de barres de renforcement pour béton armé - Google Patents

Dispositif de coupe et de mise en forme de barres en acier, notamment de barres de renforcement pour béton armé Download PDF

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Publication number
EP0835702A1
EP0835702A1 EP97830472A EP97830472A EP0835702A1 EP 0835702 A1 EP0835702 A1 EP 0835702A1 EP 97830472 A EP97830472 A EP 97830472A EP 97830472 A EP97830472 A EP 97830472A EP 0835702 A1 EP0835702 A1 EP 0835702A1
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EP
European Patent Office
Prior art keywords
bars
bed
longitudinal direction
channel
movable
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.)
Granted
Application number
EP97830472A
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German (de)
English (en)
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EP0835702B1 (fr
Inventor
Lorenzo Peruzzo
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.)
Oscam SpA
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Oscam SpA
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    • 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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete

Definitions

  • the present invention relates to apparatus for shaping steel bars, particularly bars for reinforcing concrete, of the type comprising:
  • the object of the present invention is that of enabling a number of bars to be simultaneously loaded on the bending machines, in a fully automatic manner.
  • the invention provides an apparatus of the type indicated at the beginning of the present description, characterized in that said supporting structure which receives the bars to be shaped is a substantially channel-shaped structure extending along said bed, having a bottom horizontal wall and two vertical side walls which are movable between a lowered position adjacent to the bottom wall, in which they define along said bar receiving channel with the bottom wall, and a raised position, in that said apparatus comprises pressing horizontal plate elongated along the longitudinal direction of the channel and vertically movable between said two side walls for pressing downwardly the bars supported on the bottom wall so as to keep them all in a same plane, and a pushing horizontal plate, also elongated in the longitudinal direction of the channel, and movable horizontally above said bottom wall in a direction transverse relative to the longitudinal direction of the bars, when the side walls are in their raised condition, for feeding the bars towards a discharging position, in which they can be discharged on said clamping devices for being deposited on the bending machines.
  • means are provided for feeding the bars on the supporting structure of the bed, comprising a cutting head associated with one end of the bed which attends to cutting the bars at the desired length after that they are received within said channel and clamped by means of said pressing plate.
  • said side walls are rigidly connected to each other and each have one or more slanted slots each engaged by a respective horizontal pin transverse relative to the longitudinal direction of the channel, each pin being attached to the fixed structure of the bed, so that a horizontal movement of said plates in the longitudinal direction of the channel causes a simultaneous vertical movement thereof.
  • said pressing horizontal plate is rigidly connected to a vertical upper plate, parallel to the longitudinal direction of the channel, having one or more slanted slots each engaged by a respective horizontal pin which is transverse relative to the longitudinal direction of the channel, each pin being attached to the fixed structure of the bed, so that a horizontal movement of said vertical plate in the longitudinal direction of the channel causes a simultaneous vertical movement thereof.
  • the said pushing horizontal plate has one or more slanted slots each engaged by a respective vertical pin which also engages a guiding slot parallel to the longitudinal direction of the channel formed in the fixed structure of the bed, so that a movement of said vertical pin along said longitudinal guiding slot causes a simultaneous horizontal transverse movement of the pushing plate.
  • the horizontal movement of the said vertical walls, the horizontal movement of the vertical plate connected to the pressing plate and the horizontal movement of the vertical pin for driving the pushing plate are all obtained by means of respective fluid cylinders.
  • the preferred embodiment of the invention ensures a proper and uniform movement of all the above mentioned movable plates throughout the whole length of the bed, while making use of means of simple and inexpensive construction.
  • a further important feature of the invention lies in that the said third clamping device provided at an intermediate position between the two bending machines is carried by a structure movable along the longitudinal direction of the bed, so that the three clamping devices are able to move simultaneously in order to deposit the bent bars at different areas of the storing plane.
  • This feature is particularly useful in case the apparatus is used for instance in order to provide bars according to different possible shapes, since it is thus possible to deposit the various types of shaped bars at different areas of the storing plane.
  • said discharging position of the bars, towards which the bars are pushed by said pushing plate is defined by at least one stop lever positioned at the end of an inclined plane on which the bars are fed, said lever being retractable towards a position in which it allows the bars to fall from the inclined plane into the receiving channels of the said clamping devices.
  • the bed has an upper plane with conveying chains directed transversally to the longitudinal direction of the channel, for feeding the bars pushed by thepushing plate towards a position for discharging on the clamping devices.
  • a further preferred feature of this embodiment lies in that said bottom wall of the channel structure can be inclined transversally downwardly on the side opposite to that facing forwardly in the direction of thrust of the said pushing plate, for discharging the cut bars which are not to be bent and/or any waste material resulting from the cutting operation.
  • each of the said clamping devices has a pair of jaws which are separately movable on guides directed transversally to the longitudinal direction of the bed, said guides being carried by a slide which is vertically slidably mounted on the structure of the respective bending machine which is movable along the bed or, in the case of said third clamping device, on the respective supporting structure, which is also movable along the bed.
  • numeral 1 generally designates an apparatus for cutting and shaping bars for reinforced concrete, comprising an elongated bed 2 at one end of which there is associated a cutting head 3.
  • the details of the cutting head 3 are not described and shown herein, since they can be made in any known way and since this details, taken alone, do not fall within the scope of the present invention and also because their elimination from the drawings renders the latter simpler and easier to understand.
  • the cutting head 3 is provided with means for feeding a plurality of parallel steel bars 4 on the bed 2.
  • the device according to the invention enables a number of cut bars to be loaded simultaneously on the bending machines, in a fully automatic manner, i.e.
  • FIG. 1 shows the channel structure 5 which receives the bars to be shaped in detail.
  • bars 4 are received within a channel defined by a bottom wall 6 and two side vertical walls 7.
  • the walls 7 are movable vertically and simultaneously between a lowered position (shown in figure 3) in which they are close to the bottom wall 6 and define therealong the channel 8 for receiving the bars 4, and a raised position.
  • Both the bottom wall 6, and the side walls 7 extend throughout the whole length of bed 2.
  • the walls 7 are guided in their movement between two parallel and spaced apart vertical walls 9 which form part of two longitudinal beams 10 also extending throughout the whole length of bed 2 and rigidly connected to the fixed structure of the bed.
  • the two vertical walls 7 are rigidly connected to each other at each end by a plate 11 (see figure 5) and each have a plurality of slanted slots 12 (only one of which is visible in the drawings) each engaged by a transverse horizontal pin 13 which is fixed in position, since it is rigidly connected to a respective longitudinal beam 10.
  • the structure constituted by the two vertical walls 7 is movable in a horizontal direction parallel to the longitudinal direction of the bed by means of a fluid cylinder 14, pivotally connected at its ends to the head plate 11 connecting the two plates 7 as well as to a support 15 forming part of the fixed structure of bed 2 (see figure 4).
  • a fluid cylinder 14 By activating the cylinder 14 a longitudinal movement of plates 7 is caused and, as a result of the engagement of slots 12 on the fixed transverse pins 13, also a simultaneous vertical movement of the plates 7 between said lowered position and said raised position is obtained.
  • the above described kinematic linkage ensures a proper and uniform movement of plates 7 throughout the whole length of the bed by simple and inexpensive means.
  • plate 17 has a plurality of slanted slots 18 (only one of which is visible in the drawings), each engaged by a transverse horizontal pin 19 which is fixed in position, since it is rigidly connected to the vertical wall 9 of one of the two longitudinal beams 10. Due to the engagement of each slot 12 on the respective fixed pin 19, a longitudinal movement of plate 17 causes a simultaneous vertical movement thereof.
  • the pushing plate 24 has a plurality of slanted slots 25, only one of which is visible in the drawings, each engaged by a vertical pin 26.
  • This pin is carried at the bottom by a prismatic body 27 attached to a stem 28 of a fluid cylinder 29.
  • the pin 26 is further guided within a slot 30 formed in the fixed wall 23 along a direction parallel to the longitudinal direction of the bed. Activation of cylinder 29 thus causes a movement of pin 26 in the longitudinal direction of the bed, within the guiding slot 30 and a resulting transverse movement of the pushing plate 24 due to the engagement of the slanted slot 25 on pin 26.
  • the pushing plate 24 is used for pushing the bars 4, after that they have been cut, rightwardly, with reference to figure 3, following a raising movement of the pressing plate 16 and side walls 7.
  • the pushing plate 24 is free to come in contact at one of its longitudinal edges against the bars 4 feeding them on a chain conveyor bed 31 comprising a plurality of chains 32 directed transversally with respect to the longitudinal direction of the bed and which receive the bars from channel 8 (see figure 2) and feed them towards a discharging post 33 (figure 2) in which they can be discharged on clamping devices provided on the bending machines with which the apparatus is provided and which will be illustrated in detail in the following.
  • the chain bed 31 has an inclined portion 34 along which the bars 4 may slide until they rest against a plurality of levers 35 which normally are in the raised position shown by dotted lines in figure 2.
  • Each lever 35 can be retracted downwardly by means of a driving cylinder 36 to let the bars free to fall downwardly from the inclined plane 33, to undergo the operations which will be described in detail in the following.
  • the apparatus has two bending machines 36 which are both guided, independently from each other, on longitudinal guides 37 provided alongside the bed 2.
  • the movements of each bending machine 36 along the bed are controlled by electric motors which are on board the machine and which are controlled on their turn by a computer according to a predetermined program in order to move the machines 36 in sequence to the various portions of the bars to be bent, with a technique for example described in the above mentioned European patent application.
  • each bending machine 36 comprises an upper motorized rotatable disc 38 having a central pin for abutment of the bars and a bending offset pin.
  • the structure of each machine 36 further supports a clamping device 38 (see figure 2) comprising a pair of jaws 39 movable independently from each other on guides 40 carried by a slide 41 slidably mounted on guides 42 formed on the support structure 36.
  • the movement of the two jaws 34 is obtained for example by engagement of two screws within two nuts carried by said jaws, the rotation of said screws being driven by two electric motors 43 by belt transmissions 44.
  • the jaws 39 are able to move towards and away from each other in order to define an upwardly opened channel for receiving the bars and for clamping the bars within this channel, said jaws being also able to move simultaneously on the respective guides to displace the bars along the transverse direction with respect to the longitudinal direction of the bed. Due to the possibility of moving the slide 41 in a vertical direction and moving the machine 36 in the longitudinal direction, it is thus possible that the bars 4, be displaced in space as desired after that they have been received superimposed on each other, in a vertical plane parallel to the longitudinal direction of the bed, within the receiving channels of the clamping devices 38 of the two bending machines 36.
  • the bars can be transported by these devices and deposited on the rotating discs 36a of the bending machines 36 and held in this position while the bending operation is carried out.
  • these bending takes place according to a predetermined program, under the control of a computer which attends to activating the movement of machines 36 along the bed and the rotation of the bending discs in order to provide the various bends required in the bar.
  • the same clamping devices 38 may attend to discharging the bar on the storing plane in front of the bed.
  • a further structure 45 carrying a clamping device 38 provided exactly as illustrated in figure 2 with reference to a bending machine 36.
  • This clamping device serves for supporting the bars at a position intermediate between their ends.
  • structure 45 carrying the central clamping device is movable with respect to the bed 2 in the longitudinal direction of the latter. Therefore, when a group of bars is clamped by the clamping devices 38 of the two bending machines 36 and the central structure 45, it can be translated longitudinally by a simultaneous movement in the longitudinal direction of the two machines 36 and the structure 45.
  • the bottom wall 6 of channel 8 is defined by a lever 46 which is pivotally mounted around a longitudinal axis 47 and can be inclined laterally downwardly by means of a cylinder 48 (see figure 3) on the side opposite to that facing the direction of the active stroke of the pushing plate 24, i.e. that facing towards the discharging post 33.
  • a lever 46 which is pivotally mounted around a longitudinal axis 47 and can be inclined laterally downwardly by means of a cylinder 48 (see figure 3) on the side opposite to that facing the direction of the active stroke of the pushing plate 24, i.e. that facing towards the discharging post 33.
  • the apparatus according to the invention enables the operation for transferring the bars from the receiving channel 8 to the discharging post 33 in a particularly efficient and reliable manner, with extremely simple and inexpensive means.
  • the provision of the central clamping device 38 on a structure 45 which is also movable longitudinally gives the possibility of discharging the various type of bars at different areas of the storing plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP97830472A 1996-10-11 1997-09-26 Dispositif de coupe et de mise en forme de barres en acier, notamment de barres de renforcement pour béton armé Expired - Lifetime EP0835702B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO960836 1996-10-11
IT96TO000836A IT1288751B1 (it) 1996-10-11 1996-10-11 Impianto per tagliare e sagomare barre di acciaio, particolarmente barre per l'armatura di cemento

Publications (2)

Publication Number Publication Date
EP0835702A1 true EP0835702A1 (fr) 1998-04-15
EP0835702B1 EP0835702B1 (fr) 1999-06-23

Family

ID=11414957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830472A Expired - Lifetime EP0835702B1 (fr) 1996-10-11 1997-09-26 Dispositif de coupe et de mise en forme de barres en acier, notamment de barres de renforcement pour béton armé

Country Status (4)

Country Link
EP (1) EP0835702B1 (fr)
DE (1) DE69700291T2 (fr)
ES (1) ES2133009T3 (fr)
IT (1) IT1288751B1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184099A1 (fr) * 2000-08-29 2002-03-06 OSCAM S.p.A. Machine de pliage de barres métalliques avec une table de support variable en longueur
EP2374553A1 (fr) * 2010-04-12 2011-10-12 OSCAM S.p.A. Dispositif et procédé de cintrage de barres avec alimentation automatique des barres
ITBO20120505A1 (it) * 2012-09-21 2014-03-22 Dante Bruno Priuli Apparecchiatura per la piegatura di profilati metallici in barre
WO2014045239A1 (fr) * 2012-09-21 2014-03-27 Schnell S.P.A. Procédé et appareil permettant de plier des tiges de métal en barres
ITBO20130159A1 (it) * 2013-04-10 2014-10-11 Dante Bruno Priuli Metodo e apparecchiatura per la piegatura di profilati metallici in barre
CN110076224A (zh) * 2019-05-28 2019-08-02 建科机械（天津）股份有限公司 一种钢筋网折弯生产线
CN110421426A (zh) * 2019-08-26 2019-11-08 浙江剑麟金属制品有限公司 一种线材弯折机断头自动打磨装置
CN113070418A (zh) * 2021-03-26 2021-07-06 乾日安全科技(北京)有限公司 一种建筑钢筋用切断装置
CN113732207A (zh) * 2021-08-17 2021-12-03 湖南复星合力新材料有限公司 一种高延性冷轧直条钢筋生产系统
CN116586483A (zh) * 2023-07-18 2023-08-15 致兴国际钢结构(唐山)有限公司 一种钢结构连接件折弯加工装置
CN118237503A (zh) * 2024-05-25 2024-06-25 山西国乾建设工程有限公司 一种钢筋加工用钢筋弯箍机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339861A (en) * 1979-03-23 1982-07-20 Kajima Corporation Continuous working process of steel bars for reinforced concrete and apparatus therefor
US4732066A (en) * 1985-01-21 1988-03-22 S.A.E. Srl Societa Automatismi Elettronici Device to feed bars
EP0648577A1 (fr) * 1993-10-19 1995-04-19 OSCAM S.p.A. Appareil pour le faconnage de barres en particulier des barres pour beton armé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339861A (en) * 1979-03-23 1982-07-20 Kajima Corporation Continuous working process of steel bars for reinforced concrete and apparatus therefor
US4732066A (en) * 1985-01-21 1988-03-22 S.A.E. Srl Societa Automatismi Elettronici Device to feed bars
EP0648577A1 (fr) * 1993-10-19 1995-04-19 OSCAM S.p.A. Appareil pour le faconnage de barres en particulier des barres pour beton armé

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184099A1 (fr) * 2000-08-29 2002-03-06 OSCAM S.p.A. Machine de pliage de barres métalliques avec une table de support variable en longueur
EP2374553A1 (fr) * 2010-04-12 2011-10-12 OSCAM S.p.A. Dispositif et procédé de cintrage de barres avec alimentation automatique des barres
ITTO20100279A1 (it) * 2010-04-12 2011-10-13 Oscam Spa Impianto per la piegatura di barre metalliche con caricamento automatico delle barre, e metodo di caricamento utilizzato in tale impianto
ITBO20120505A1 (it) * 2012-09-21 2014-03-22 Dante Bruno Priuli Apparecchiatura per la piegatura di profilati metallici in barre
WO2014045239A1 (fr) * 2012-09-21 2014-03-27 Schnell S.P.A. Procédé et appareil permettant de plier des tiges de métal en barres
ITBO20130159A1 (it) * 2013-04-10 2014-10-11 Dante Bruno Priuli Metodo e apparecchiatura per la piegatura di profilati metallici in barre
CN110076224A (zh) * 2019-05-28 2019-08-02 建科机械（天津）股份有限公司 一种钢筋网折弯生产线
CN110076224B (zh) * 2019-05-28 2024-02-27 建科机械（天津）股份有限公司 一种钢筋网折弯生产线
CN110421426A (zh) * 2019-08-26 2019-11-08 浙江剑麟金属制品有限公司 一种线材弯折机断头自动打磨装置
CN113070418A (zh) * 2021-03-26 2021-07-06 乾日安全科技(北京)有限公司 一种建筑钢筋用切断装置
CN113732207A (zh) * 2021-08-17 2021-12-03 湖南复星合力新材料有限公司 一种高延性冷轧直条钢筋生产系统
CN116586483A (zh) * 2023-07-18 2023-08-15 致兴国际钢结构(唐山)有限公司 一种钢结构连接件折弯加工装置
CN116586483B (zh) * 2023-07-18 2023-09-08 致兴国际钢结构(唐山)有限公司 一种钢结构连接件折弯加工装置
CN118237503A (zh) * 2024-05-25 2024-06-25 山西国乾建设工程有限公司 一种钢筋加工用钢筋弯箍机

Also Published As

Publication number Publication date
IT1288751B1 (it) 1998-09-24
EP0835702B1 (fr) 1999-06-23
DE69700291T2 (de) 1999-12-16
DE69700291D1 (de) 1999-07-29
ES2133009T3 (es) 1999-08-16
ITTO960836A1 (it) 1998-04-11
ITTO960836A0 (it) 1996-10-11

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