EP1529573A1 - Installation pour le cintrage de barres avec alimentation automatique des barres vers une station de cintrage - Google Patents

Installation pour le cintrage de barres avec alimentation automatique des barres vers une station de cintrage Download PDF

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Publication number
EP1529573A1
EP1529573A1 EP04026138A EP04026138A EP1529573A1 EP 1529573 A1 EP1529573 A1 EP 1529573A1 EP 04026138 A EP04026138 A EP 04026138A EP 04026138 A EP04026138 A EP 04026138A EP 1529573 A1 EP1529573 A1 EP 1529573A1
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European Patent Office
Prior art keywords
bars
arms
bending
plant according
levers
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Granted
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EP04026138A
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German (de)
English (en)
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EP1529573B1 (fr
Inventor
Stefano Peruzzo
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Oscam SpA
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Oscam SpA
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Priority claimed from ITTO20030888 external-priority patent/ITTO20030888A1/it
Application filed by Oscam SpA filed Critical Oscam SpA
Publication of EP1529573A1 publication Critical patent/EP1529573A1/fr
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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 the field of plants for bending metal bars, in particular bars for the reinforcement of concrete.
  • the bars to be bent are transferred onto one or more bending units after they have been picked up from a station, in which they are arranged substantially parallel to one another even though sometimes they criss-cross one another. Transfer occurs typically by translating the bars in a direction transverse to their longitudinal direction of lie and possibly in the vertical direction.
  • the pick-up station is constituted by a channel provided on a bench, where the bars are cut to the desired length starting from bars of a pre-set standard length, but can be constituted also by transfer tracks, storage areas, catenaries, or areas specifically dedicated to feeding the bending units.
  • transfer of the bars onto the bending unit is carried out manually by one or more operators.
  • machines of the latter more conventional type in which the pick-up station is provided with a set of lifting arms extending in a transverse direction underneath the bars received on the pick-up station, which is rack-shaped. Said arms are able to be raised above the surface for resting the bars, passing through the spaces defined between the various elements of the rack so as to bring the bars to a level where they can be easily picked up manually by the operators.
  • lever loading systems are used, in which the operators transfer the bars manually to a pre-loading station, from which the levers pick said bars up, but in which the levers are carried by the bending units so that, above all on account of the excessive distance between the levers, in the case of long bars, problems of criss-crossing or deflection arise, and often a further manual intervention is necessary prior to proceeding to the bending operation. Consequently, at best some reduction of the physical fatigue of the operators may be achieved, but a really automatic apparatus is not obtained.
  • the present applicant has also proposed in the past various types of automatic devices for handling bars inside the bending plant.
  • the European patent No. EP648577B1 filed in the name of the present applicant, proposes equipping the bending units with mobile pick-up structures capable of picking up the bars from seats, in which they are stacked on top of one another vertically, and transferring them onto the bending units.
  • the present applicant has also proposed a device for handling bars that employs grippers, which forms the subject of the European patent application No. 03014748, still secret at the date of filing of the present patent application.
  • the purpose of the present invention is a device of an improved type for transferring bars, which will be able to transfer the bars into the receiving space defined on one or more bending units with which the plant is equipped, with means that are relatively simple, functional, and inexpensive.
  • the subject of the invention is a plant which presents all the characteristics indicated at the beginning of the present description and is further characterized in that:
  • the set of the aforesaid first arms or levers is carried by the stationary structure of the plant and is able to form an inclined plane, which is not necessarily rectilinear, but could even be curved when the arms are arranged in the aforesaid second position and from which the bars are unloaded onto the receiving space on the bending unit or units.
  • the surface of the aforesaid first arms or levers has a cradle-shaped concave curved profile.
  • the cradle-shaped concave profile of the arms is such that, even in the case where the bars arrive on the arms in a condition in which they criss-cross one another, are entangled, or are on top of one another, they tend to arrange themselves in a coplanar condition following their natural oscillations on the cradle-shaped surface. This guarantees that, in the final stage, the bars will enter the receiving space on the bending unit one after another, thus lying on top of one another in the aforesaid plane orthogonal to the bending surface in the same order on all the bending units.
  • a vice is set for keeping the bars stationary during the bending operations. Also this vice is provided with a receiving space similar to that of the bending units. Consequently, it is important that also therein the bars enter in an orderly way and in the same order in which they entered the receiving spaces of the bending units, and the plant forming the subject of the invention enables this to be achieved.
  • This vice may be fixed or even mobile in the longitudinal direction of the bars in order to enable unloading of the finished product throughout the length of the plant. In general, it is also possible to have vices also set on the at least one bending unit even in the case where a different number of mobile or fixed bending units is envisaged.
  • the aforesaid curved profile of each of the aforesaid first arms has one end facing the bending unit, where an arrest surface for the bars is defined.
  • the transfer means comprise a plurality of second arms or levers also mounted on the stationary structure and distributed in the longitudinal direction of lie of the bars on the stationary structure in positions interspersed with those of the first arms. Said second arms are designed to co-operate with the first arms to receive the bars carried by the first arms after the latter have been brought into their second position. In said condition, the bars initially arranged on the first arms move downwards, rolling thereon, until they come to stop against the arrest surfaces at the ends of the first arms.
  • the second arms are arranged to form an inclined surface adjacent to the surface defined by the first arms in such a way that a subsequent further slight lowering of the first arms causes the bars to be received on the second arms, albeit remaining stationary against said arrest surfaces of the first arms, which in said step still project over the second arms.
  • a further lowering of the first arms hence causes the bars to slide by gravity on the inclined plane defined by the second arms until they enter, one after another, the receiving space on the bending units.
  • the final stage of sliding of the bars takes place on the inclined plane defined by the aforesaid second arms, which possibly co-operate also with other structures, such as inclined planes carried by the bending units, but starting from a position close to the receiving space so that the bars are not able to acquire an excessive speed, which could jeopardize orderly and correct transfer into the receiving space.
  • the transfer means finally comprise a plurality of third arms or levers mounted once again on the stationary structure and distributed in the longitudinal direction of lie of the bars on the stationary structure, in positions interspersed with those of the first arms and of the second arms.
  • Said third arms or levers are able to move simultaneously between a first position substantially underneath the surface for supporting the bars on the stationary structure and a second position substantially above said surface, in such a way that raising of said third arms or levers from the first position to the second position brings about interception of the bars which are located on said supporting surface and their transfer onto the first arms or levers.
  • first arms, second arms and third arms are mounted articulated to the stationary structure about a common axis, so that their movement between the respective operative positions is a movement of rotation about said axis.
  • each set of arms constitutes a single rack structure, which is set in motion by motor means of any type, for example by fluid-driven cylinders.
  • fourth arms or levers which are also distributed in the longitudinal direction of lie of the bars and can be raised from a first position to a second position for intercepting the bars that are located on the supporting surface on the stationary structure and cause them to slide towards an unloading position designed for receiving the bars that do not require bending operations.
  • the first, second and third arms do not intervene and the aforesaid fourth arms unload said bars, bypassing the bending units, typically unloading them on the side opposite to the one in which there is located the at least one bending unit with respect to the longitudinal axis of the bars.
  • control means such that, according to the duration of the cycles for cutting and bending or for cutting only, will appropriately alternate cycles for cutting only and for bending only.
  • the bars that have only been cut will be unloaded preferably on the opposite side to that of the at least one bending unit, but sometimes even on the same side in the case of particular requirements.
  • means are provided designed to cause, by appropriately arranging the bending units according to the position of the bars, the position of dropping of the bars and, in particular, the length of the trailing portion of each bar which projects longitudinally outside the receiving space ???(8) on the bending units to be a function of the diameter of the bars, of their length, of their mechanical characteristics and possibly of their number so as to reduce the risk of criss-crossing.
  • the aforesaid third arms intercept the bars that have arrived on the supporting surface on the stationary structure (in a typical case, the bottom of a channel provided on the bench where the bars are cut to the desired length, but even the pre-loading area of a bending plant or the like) and transfer them onto the first arms.
  • the latter are displaced downwards, in the meantime leaving the bars free to set themselves in order in a condition in which they are set alongside one another along the surface of the curve that constitutes the profile of the cradles, without any criss-crossing, and stop the bars in said condition at a short distance from the receiving space on the bending units.
  • the first arms move into their lowered position, in which the bars slide thereon, stopping on top of the arrest surfaces defined at the ends of the first arms.
  • the first arms are further lowered, so as to enable the second arms, set adjacent thereto, to receive the bars and finally guide them as they drop into the receiving space on the bending units, once the arrest surfaces at the ends of the first arms drop below the second arms.
  • the third arms can return into their starting position so as to be ready to receive a new set of bars present in the channel of the cutting bench, without waiting for the other arms to complete their cycle, so as to eliminate any dead time.
  • the plant according to the invention enables automatic unloading of the bars into a receiving space, which is the one in which the bars are located during the bending operations, so that, unlike other plants, no further transfer of the bars to be carried out either manually or via additional devices is necessary.
  • the plant according to the invention is hence characterized by a high operating efficiency and, at the same time, has an extremely simple and reliable structure.
  • each bending unit 2 comprises a supporting structure 3, on which there is mounted so that it can turn a bending disk 4, which has a central spindle 5 and carries an eccentric pin 6 for bending a portion of one or more bars B around the central spindle 5.
  • the axis 4A ( Figure 3) of the bending disk 4 is inclined with respect to the vertical direction.
  • the annexed plate of drawings does not show the structure inside the outer casing of the machine, which comprises the motor means for rotation of the disk 4, as well as the means possibly provided for bringing about lowering of the disk below the top surface of the machine to perform bends in the second direction of rotation of the disk.
  • the two bending units 2 define a receiving space 8 for the bars to be bent, in which a number of bars can be received set on top of one another in a plane substantially orthogonal to the bending plane of the bars.
  • Figure 9 of the annexed plate of drawings shows, for example, three bars B designed to undergo bending operations, which are received in the receiving space 8 of the bending units.
  • the two bending units 2 are mobile on rails 9 in the direction A parallel to the longitudinal direction of lie of the bars B.
  • motor means designed to control movement of the bending unit along the rails 9.
  • the plant is provided with an electronic control system, which controls, according to a pre-set program, the subsequent movements of the bending units 2 and of the corresponding bending disks to carry out the various bends on a bar or on a set of bars subjected simultaneously to bending in order to obtain any pre-set shape.
  • the bending units 2 may be of the type illustrated in Figures 2 and 2A, with a spindle 5, around which the bars are bent, and with the contrast element 7, or else they may be of the type with a spindle having a diametral slit, which also defines the receiving space for the bars. In this case, one of the portions will possibly function also as contrast element.
  • the two bending units 2 of the plant according to the invention are arranged, in the case of the specific example illustrated, adjacent to a bench, on which the bars that are to undergo bending are cut to the desired length, starting from bars of a standard length.
  • Said bench designated as a whole by the reference number 10 (see Figures 1 and 3), comprises a stationary structure 11, on which there is a channel 12, along the bottom of which the bars B are fed, possibly after they have undergone a cutting operation.
  • the details corresponding to the device for carrying out cutting of the bars and to the device for feeding the bars longitudinally to the cutting device are not shown.
  • the stationary structure is preferably provided with a plurality of resting surfaces that can be sent down (not illustrated), set adjacent to one another, which can be selectively brought into their operative raised position to provide a continuous resting surface for the bars B at least for a substantial part of the space comprised between the two bending units 2, however the latter may be positioned, said resting surface being preferably coplanar with the top surfaces of the bending units 2 in such a way that the bars B do not bend or deform as a result of gravity. In their lowered inoperative position, instead, the resting surfaces do not interfere with the movement of the bending units 2 in the direction A.
  • roller-shutter-type hide-away structure could be used like the one described in the European patent EP1184099 filed in the name of the present applicant or, at least, an additional resting surface for the at least one bending unit 2.
  • the preferred embodiment illustrated herein envisages four sets of arms 13, 14, 15 and 16 used for movement of the bars, said arms being mounted in an articulated way on the stationary structure 11 of the bench 10.
  • one first set of arms 13 is mounted articulated on the stationary structure 11 about an axis A parallel to the longitudinal direction of lie of the bars B in the channel 12.
  • the arms 13 extend in a transverse direction with respect to the longitudinal direction of the bars and are distributed along said length, i.e., along the axis A on the bench 10. They are moreover connected to one another by a longitudinal structure 13A ( Figure 1) so that they are able to move simultaneously about the respective axis of articulation A.
  • the movement of the structure comprising the set of the arms 13 is controlled by means of one or more fluid-driven cylinders 17, each of which has an end articulated to the stationary structure 11 and a stem, the opposite end of which is connected, in an articulated way, to the structure comprising the arms 13.
  • Figure 3 illustrates the arms 13 in a raised position, in which they are set for receiving a set of bars B to be transferred onto the bending unit 2.
  • the set of arms 15 (also visible in the plate of drawings) comprises a plurality of arms, which are also articulated around the aforesaid longitudinal axis A and also extend in a direction transverse to said axis, on the opposite side with respect to the arms 13. Also in the case of the arms 15, these are connected by a transverse structure (not visible in the plate of drawings), which is such that said arms can move simultaneously rotating all about the aforesaid axis A.
  • the device comprises a further set of arms 14 set in a direction transverse to the longitudinal direction of lie of the bars and articulated about the same axis A of articulation of the arms 13 and 15. Also the arms 14 are distributed along the bench 10 and are each adjacent to a respective arm 13. Also the arms 14 are connected to one another by means of a longitudinal structure 14A ( Figure 1).
  • the plant comprises a further set of transverse arms 16, which are connected to one another by a structure 16A, are distributed along the bench 10, are also set in the resting position underneath the plane of the cutting channel 12, and are articulated about a longitudinal axis C located on one side of the bench 10 opposite to the one having the axis A ( Figures 1 and 3).
  • each transverse arm 13 has a cradle-shaped concave profile 13B ( Figure 3). Thanks to said characteristic, the surface defined by the set of the arms 13 is a cradle-shaped surface, the generatrices of which are parallel to the axis A and the function of which will emerge clearly from what follows.
  • a further characteristic of the plant according to the invention lies in the fact that the central spindle 5 of the bending disks 4 has a top prolongation 5A functioning as arrest for the bars which are to be made to drop into the receiving space 8 described above.
  • the arms 13, 14, 15 and 16 are in the positions illustrated in Figure 3.
  • the cutting channel 12, or in any case the pick-up station will receive a plurality of bars B designed to undergo a bending operation of the same type as the one illustrated in Figure 2A.
  • the device according to the invention is used for transferring the bars from the cutting channel 12 to the receiving space 8 on the bending units.
  • the cylinder, or cylinders, 18 which control the position of the arms 15 are actuated for controlling simultaneous displacement of said arms from the lowered position illustrated in Figure 3 to the raised position illustrated in Figure 4.
  • the arms 15 intercept the bars B that are located in the cutting channel 12, causing transfer thereof onto the arms 13.
  • the arrangement of the arms 15 and 13 and their conformation are such that, when the arms 15 are raised, their top surfaces define an inclined plane flush with the surface defined by the top edges of the arms 13. In this way, the bars B are forced to slide downwards, gathering on the surface 13B of the arm 13.
  • the cradle-shaped concave profile of the top surface defined by the arms 13 can bring about a certain movement of oscillation of the bars B, which helps to eliminate any possible criss-crossing of the bars and to arrange the latter substantially alongside one another along the curve that defines the profile of the surface 13B.
  • Figure 5 shows how the arms 15, once the bars B have been transferred onto the arms 13, can return immediately into the starting position, in which they are ready to pick up a new set of bars B received in the cutting channel 12.
  • the arms 14 can be brought into their lowered position, in which their top edges define an inclined plane that is aligned with the top inclined surface of the contrast elements 7 of the bending units, so that they can co-operate therewith for unloading the bars B directly into the receiving space 8.
  • the top surface of the contrast elements 7 can have different inclinations in the various stretches, for example a decreasing inclination (whether with a continuous curve or with broken-line stretches with different inclinations), and a chamfered edge for facilitating introduction into the final stretch, and alignment with the arms 14 can occur even just for an appropriate stretch.
  • additional structures provided with a profile defining an inclined plane aligned for an appropriate stretch with the arms 14 can be set on hide-away structures located between the bending units 2, such as, for example, the aforementioned send-down resting surfaces, in such a way as to facilitate an orderly movement of the bars in the final stretch of transfer.
  • each arm has, at its free end, an arrest finger 13C, which projects upwards and defines an arrest surface for the bars B arranged on the arms 13.
  • said arrest fingers will have to be provided with means, for example motors or fluid-driven cylinders, such as to enable them to be brought into a position in which there is no interference with the bars B, leaving the latter free to drop into the receiving space 8.
  • means for example motors or fluid-driven cylinders, such as to enable them to be brought into a position in which there is no interference with the bars B, leaving the latter free to drop into the receiving space 8.
  • the distance of the arrest fingers 13C and/or of the ends of the lever arms 13 and/or 14 from the receiving space 8 will be adjustable.
  • Figure 8 shows the immediately subsequent step, in which the arms 13 are further lowered, so as to remove the arrest fingers 13C from any possible interference with the bars B and consequently leave the latter free to move by gravity (and/or by inertia, in the case where the arrest fingers 13C are not present) one after another until they enter the receiving space 8 after they have possibly struck against the arrest surface 5 and 5A.
  • the bars reach the condition illustrated in Figure 9, where they are set on top of one another in a plane substantially orthogonal to the bending plane of the bars.
  • the arms 13 and 14 can be brought back again into their starting positions, illustrated in Figure 3, and the bending unit can be controlled according to any programmed bending cycle, to perform the bending operation as illustrated in Figures 2 and 2A.
  • the bars B head Before the start of the bending cycle, it may be possible to set the bars B head on, for example by pushing them via an arrest element carried by a mobile bending unit in the direction A.
  • the bending units will be displaced in the case where the position of start of bending does not coincide with that of loading of the bars B in so far as it has been necessary to prevent interference between the arms or levers 13 and 14 and the bending units 2 with all the items that they carry.
  • Figure 10 illustrates once again the case where there arrive, in the cutting channel 12, bars B that are not to undergo any bending operation.
  • the bars are intercepted by the arms 16, which are raised to enable the bars B to slide on the side of the bench 10 opposite to that of the bending unit 2.
  • any suitable receiving device such as a rack, a bench, a trolley, an endless belt, or in general any storage or conveying device.
  • Transfer of the bars from the bending units onto the unloading station can be obtained in any known way, including the use of gripper means for automatic movement, such as the ones that form the subject of the prior European patent application No. 03014748 filed in the name of the present applicant, or lever expellers.
  • the system according to the invention is characterized, on the one hand, by a considerable simplicity and consequently by a low cost of fabrication and, on the other hand, by a high reliability and efficiency of operation.
  • a fundamental characteristic of the invention lies in the fact that the arms or levers used for handling the bars are all carried by the stationary structure adjacent to the bending units and are able to handle the bars by picking them up from a horizontal coplanar condition, or in any case a condition of alignment on a plane with moderate inclination, and unloading them into the receiving space 8 on the bending units without any manual intervention, with simple, fast and automatic operations.
  • Each set of arms typically comprises at least three arms and preferably at least ten, preferably set at the same distance from one another.
  • the arms extend preferably for at least half of the length of the bars to be handled. There is by no means excluded, on the other hand, the possibility of adding further arms or levers mounted on the bending units, even co-operating with the former, but this does not appear strictly necessary, given that, already as it is, the apparatus achieves a high degree of reliability.
  • the invention applies to any type of bending plant, with any conformation and arrangement of one or more bending units provided in the plant.
  • conformation of the stationary structure that receives the bars to be transferred onto the bending station may of course be altogether different from what is illustrated herein purely by way of example.
  • At least one of said bending units is provided with an element for arresting the bars and setting them head-on, said element being designed to function as contrast for one leading end of the bars after they are received in said receiving space so that the bending unit provided with said arrest element can be displaced in said longitudinal direction A in order to bring the arrest element up against the leading end of the bars, if necessary pushing them, and consequently forcing all the bars to assume a pre-set longitudinal position.
  • the units are positioned longitudinally so as to prevent any interference with the arms of the device.
  • the units can be set in the correct positions, in order to carry out the desired bending operation.
  • the bars B are gripped in their central part by clamping grippers (in themselves of a known type and not illustrated herein), set between the bending units 2, in the case where there are two or more of said units, or in any case adjacent to the bending unit 2 in the case where there is just one. Additional vices can be mounted on the at least one bending unit 2 for the purpose of withholding the bars during bending, but not during the movements of the at least one bending unit.
  • the various arms in particular the arms 13, 14 and 15, but also 16, can move at a different rate according to the load.
  • the risks of improper dropping are reduced, and the arms can move faster.
  • the arms 13 and 14, as likewise possibly the structures 13A and 14A that connect them together, can translate in the direction perpendicular to the direction A for varying their distance from the receiving space 8 and/or from the central spindle 5.
  • the distance between the arrest fingers 13C and the receiving space 8 and/or the central spindle 5 is readily adjustable.
  • it could be the bending units 2, or even just the structure 3, that translate in the same direction to obtain the same result.
  • the most important parameters according to which the distances are to be adjusted are: the diameter of the bars; the length of the bars; the mechanical characteristics of the bars; the number of the bars; the diameter of the central spindle 5; and the diameter and position of the eccentric bending pin 6.
  • FIGS 11-13 illustrate a possible variant embodiment of the invention, according to which the arms 13 are without the respective arrest finger 13C, and each spindle 5 has, instead of the top prolongation 5A of the previous figures, a respective guiding and containment member, designated as a whole by 5B.
  • Said member 5B operates to guarantee that the plurality of bars B that is conveyed via the arms 13 and 14 in the direction of the intake mouth of the space 8 will be fed correctly, with the bars themselves arranged alongside one another so as to enter in succession within the space 8, without any criss-crossing or piling-up that could cause clogging or in any case a disorderly entry into the mouth of said space 8, as explained previously.
  • the guiding and containment member 5B in its operative condition as illustrated schematically in Figure 13, defines a guiding and containment surface 5B' that overlies the space 8. More specifically, the guiding and containment surface 5B' is a surface inclined from the top downwards in the direction of the mouth of the space 8 for receiving the bars. In the example illustrated, the surface 5B' includes two portions having a different inclination which increases in the direction of the space 8. Alternatively, the guiding surface 5B' may be constituted by a curve with an inclination increasing from the top downwards in the direction of the space 8 for receiving the bars.
  • the bars B are free to slide or roll on the inclined top surfaces of the arms 14 and contrast element 7, until they hit against the guiding surface 5B', so as to be re-directed thereby, or "reflected” downwards, within the space 8.
  • the inclination or curvature of the surface 5B' and the fact that it overlies the inlet mouth of the space 8 prevents, following upon impact, a bar from possibly "bouncing” back and thus returning onto the aforesaid top surfaces of the arms 14 and of the contrast element 7, falling astride of the subsequent bars.
  • the slowest bars could enter the receiving space 8 directly, without hitting against the surface B', but for them there is no risk of any irregular entry.
  • the guiding member 5B can be displaced into an inoperative position (not represented in the figures), in which it does not overlie the space 8 so as to enable raising of the bars B that have already undergone a bending operation outside the aforesaid space for receiving the bars in order to enable their unloading from the plant, it being possible for said raising to be carried out with modalities and means in themselves known (for example, extractor levers).
  • the guiding member 5B can be connected in an articulated way to a respective support connected to the disk 4 and engaged in guides shaped in such a way as to cause displacement of the guiding member 13 between its operative position and its inoperative position on account of the movement of the bending disk 4 between a raised position thereof and a lowered position thereof (said movement of the disk 4 being moreover already envisaged in a preferred embodiment of the invention in order to facilitate particular bending operations).
  • the bars B received by the bench 10 are transferred by means of the system of arms 13, 14 into the spaces 8 for receiving the bars defined by the two bending units 2.
  • the two members 5B for guiding and containment of the bars B associated to the bending units 2 are all in their operative condition so that they define the aforesaid guiding surface 5B' overlying the space 8 for receiving the bars. In this way, it is ensured that the bars B will be freely conveyed within the space 8 without any risk of criss-crossing or piling-up.
  • Said bending operations are carried out by controlling the rotation of the bending disks 4 of the bending units 2 and by displacing the bending units 2 in the longitudinal direction of the bars so as to make the bends in the various positions desired.
  • the means provided for bending are of course of any type and in themselves do not form part of the present invention.
  • the members 13 are displaced into their inoperative position. In the case of the bending units 2, this is obtained by lowering the two bending disks 4. In said condition, the bent bars can be taken out of the space 8 and unloaded, using any technique, at the side of the bending units.
  • the plant according to the invention can be equipped with an intermediate supporting and vicing structure, provided, according to techniques in themselves known, in the space comprised between the two bending units 2, for supporting the bars B and keeping them stationary in their central part during the bending operation, or else for clamping the bars B when the distance between the bending units is varied.
  • the aforesaid intermediate structure will preferably be provided with the member 5B for guiding and containment of the bars B.
  • the member 5B can be displaced between its operative position and its inoperative position by means of a kinematic mechanism actuated by a fluid-driven cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)
EP04026138A 2003-11-07 2004-11-04 Installation pour le cintrage de barres avec alimentation automatique des barres vers une station de cintrage Active EP1529573B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITTO20030888 2003-11-07
ITTO20030888 ITTO20030888A1 (it) 2003-11-07 2003-11-07 Impianto per la piegatura di barre metalliche con il trasferimento automatico delle barre nella posizione per la piegatura.
ITTO20040203 2004-03-25
IT000203 IT1351915B1 (it) 2003-11-07 2004-03-25 Impianto per la piegatura di barre di barre metalliche con il trasferimento automatico delle barre nella posizione per la piegatura

Publications (2)

Publication Number Publication Date
EP1529573A1 true EP1529573A1 (fr) 2005-05-11
EP1529573B1 EP1529573B1 (fr) 2008-08-27

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EP04026138A Active EP1529573B1 (fr) 2003-11-07 2004-11-04 Installation pour le cintrage de barres avec alimentation automatique des barres vers une station de cintrage

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EP (1) EP1529573B1 (fr)
AT (1) ATE406223T1 (fr)
DE (1) DE602004016103D1 (fr)
ES (1) ES2312902T3 (fr)
IT (1) IT1351915B1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1844872A2 (fr) * 2006-04-13 2007-10-17 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Dispositif de positionnement et de protection pour machines de cintrage
KR101002034B1 (ko) 2010-04-16 2010-12-17 김광호 철근 절곡장치
CN101985140A (zh) * 2010-11-05 2011-03-16 安阳艾尔旺新能源环境有限公司 圆形沿口型材的弯曲成型方法和装置
EP2374553A1 (fr) * 2010-04-12 2011-10-12 OSCAM S.p.A. Dispositif et procédé de cintrage de barres avec alimentation automatique des barres
EP3031543A1 (fr) * 2014-12-12 2016-06-15 Schnell S.p.A. Dispositif de chargement et de déchargement de barres
IT201700020026A1 (it) * 2017-02-22 2018-08-22 Manni Sipre S P A Apparato e metodo per la lavorazione di prodotti lunghi in acciaio strutturale
CN109226584A (zh) * 2018-11-23 2019-01-18 鹤山市鹤建机械有限公司 一种钢筋弯箍机
CN109663871A (zh) * 2018-12-10 2019-04-23 建科机械（天津）股份有限公司 自动上下料装置及钢筋弯曲机
CN112091012A (zh) * 2020-09-25 2020-12-18 黄石东贝制冷有限公司 微型自动折弯机
CN113263086A (zh) * 2021-03-24 2021-08-17 广东博智林机器人有限公司 钢筋网片弯折装置及单筋弯网机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889467A (en) * 1986-12-24 1989-12-26 Heinz Ruhl Tooling assembly for rod material
IT1220843B (it) * 1988-02-26 1990-06-21 Omes Officina Meccanica Di E S Piegatrice doppia per ferri perl'edilizia.
EP0432468A2 (fr) * 1989-12-14 1991-06-19 Peddinghaus, Carl Ullrich, Dr. Machine à plier des barres en acier
AT393641B (de) * 1989-09-20 1991-11-25 Evg Entwicklung Verwert Ges Vorrichtung zum biegen von stahlstaeben zu betonbewehrungselementen
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
JP2002143931A (ja) * 2000-11-06 2002-05-21 Toyo Kensetsu Koki Kk 鉄筋曲げ装置

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Publication number Priority date Publication date Assignee Title
US4889467A (en) * 1986-12-24 1989-12-26 Heinz Ruhl Tooling assembly for rod material
IT1220843B (it) * 1988-02-26 1990-06-21 Omes Officina Meccanica Di E S Piegatrice doppia per ferri perl'edilizia.
AT393641B (de) * 1989-09-20 1991-11-25 Evg Entwicklung Verwert Ges Vorrichtung zum biegen von stahlstaeben zu betonbewehrungselementen
EP0432468A2 (fr) * 1989-12-14 1991-06-19 Peddinghaus, Carl Ullrich, Dr. Machine à plier des barres en acier
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
JP2002143931A (ja) * 2000-11-06 2002-05-21 Toyo Kensetsu Koki Kk 鉄筋曲げ装置

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PATENT ABSTRACTS OF JAPAN vol. 2002, no. 09 4 September 2002 (2002-09-04) *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1844872A3 (fr) * 2006-04-13 2008-05-14 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Dispositif de positionnement et de protection pour machines de cintrage
EP1844872A2 (fr) * 2006-04-13 2007-10-17 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Dispositif de positionnement et de protection pour machines de cintrage
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
EP2374553A1 (fr) * 2010-04-12 2011-10-12 OSCAM S.p.A. Dispositif et procédé de cintrage de barres avec alimentation automatique des barres
KR101002034B1 (ko) 2010-04-16 2010-12-17 김광호 철근 절곡장치
CN101985140B (zh) * 2010-11-05 2012-07-18 安阳艾尔旺新能源环境有限公司 圆形沿口型材的弯曲成型方法和装置
CN101985140A (zh) * 2010-11-05 2011-03-16 安阳艾尔旺新能源环境有限公司 圆形沿口型材的弯曲成型方法和装置
EP3031543A1 (fr) * 2014-12-12 2016-06-15 Schnell S.p.A. Dispositif de chargement et de déchargement de barres
IT201700020026A1 (it) * 2017-02-22 2018-08-22 Manni Sipre S P A Apparato e metodo per la lavorazione di prodotti lunghi in acciaio strutturale
CN109226584A (zh) * 2018-11-23 2019-01-18 鹤山市鹤建机械有限公司 一种钢筋弯箍机
CN109663871A (zh) * 2018-12-10 2019-04-23 建科机械（天津）股份有限公司 自动上下料装置及钢筋弯曲机
CN109663871B (zh) * 2018-12-10 2023-12-05 建科机械（天津）股份有限公司 自动上下料装置及钢筋弯曲机
CN112091012A (zh) * 2020-09-25 2020-12-18 黄石东贝制冷有限公司 微型自动折弯机
CN113263086A (zh) * 2021-03-24 2021-08-17 广东博智林机器人有限公司 钢筋网片弯折装置及单筋弯网机构
CN113263086B (zh) * 2021-03-24 2022-07-22 广东博智林机器人有限公司 钢筋网片弯折装置及单筋弯网机构

Also Published As

Publication number Publication date
EP1529573B1 (fr) 2008-08-27
DE602004016103D1 (de) 2008-10-09
IT1351915B1 (it) 2009-01-15
ES2312902T3 (es) 2009-03-01
ATE406223T1 (de) 2008-09-15
ITTO20040203A1 (it) 2004-06-25

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