EP0419441B1 - Appareil de pliage pour barres de fer à béton - Google Patents

Appareil de pliage pour barres de fer à béton Download PDF

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Publication number
EP0419441B1
EP0419441B1 EP90890230A EP90890230A EP0419441B1 EP 0419441 B1 EP0419441 B1 EP 0419441B1 EP 90890230 A EP90890230 A EP 90890230A EP 90890230 A EP90890230 A EP 90890230A EP 0419441 B1 EP0419441 B1 EP 0419441B1
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EP
European Patent Office
Prior art keywords
bars
bending
gripper
arm
gripper tongs
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.)
Expired - Lifetime
Application number
EP90890230A
Other languages
German (de)
English (en)
Other versions
EP0419441A1 (fr
Inventor
Klaus Dipl.-Ing. Ritter
Gerhard Dr. Dipl.-Chem. Ritter
Gerhard Dipl.-Ing. Schmidt
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.)
EVG Entwicklungs und Verwertungs GmbH
Original Assignee
EVG Entwicklungs und Verwertungs GmbH
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
Priority claimed from AT220689A external-priority patent/AT393641B/de
Priority claimed from AT27990A external-priority patent/AT394958B/de
Application filed by EVG Entwicklungs und Verwertungs GmbH filed Critical EVG Entwicklungs und Verwertungs GmbH
Publication of EP0419441A1 publication Critical patent/EP0419441A1/fr
Application granted granted Critical
Publication of EP0419441B1 publication Critical patent/EP0419441B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21D43/28—Associations of cutting devices therewith
    • B21D43/285—Devices for handling elongated articles, e.g. bars, tubes 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
    • 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

Definitions

  • the invention relates to a device for bending steel bars to concrete reinforcement elements, with a device for feeding bars to a transfer device with which a family of bars can be inserted in the transverse direction of the bar between bending members.
  • coulter bars combined on stops on an inclined plane are fed one after the other in the transverse direction of the bar to the transfer device, which coulters with bars lying vertically one above the other on a roller conveyor in the longitudinal direction of a downstream binding device for tying the coulter and a bending machine in which the coulter is bent into the desired shape.
  • the main disadvantage of this device is that the coulters are passed without guidance to the transfer device having several rows of vertical pairs of rollers, which can lead to malfunctions and misalignments of the bars.
  • Another disadvantage of the known design is that the coulters are first wrapped with tapes or wire or bound to one another by welding so that they can subsequently be fed to the bending device in the longitudinal direction.
  • DE-A-36 44 482 discloses a device of the type mentioned at the outset for machining steel bars with a tool, for example a bending slide, in which several bars are transported both towards the bending slide and after processing away from the slide in the transverse direction of the bar by means of arms which are mounted on both sides of the tool and can be pivoted as a unit.
  • the rods must be placed on the swivel arms by hand.
  • a further disadvantage is that the rods are not fixed on the swivel arms and are only held by one step in the respective swivel arm when the arms are swiveled.
  • Another disadvantage is that the bars to be bent are placed on inclined, ramp-shaped elements and after lowering the swivel arms only due to gravity Cross bar direction slipped into a working channel of the bending device.
  • a mutual hindrance when slipping can take place, in particular if the rods are long and ribbed, and a defined, ordered arrangement in the working channel can thereby be made more difficult.
  • the object of the invention is to provide a device which avoids the disadvantages of the known devices and ensures a safe simultaneous transfer of a group of bars from the feed device to the bending device.
  • the device is intended to enable the perfect processing of rod material in different shapes.
  • This object is achieved in the generic device in that two mutually adjustable frames in the longitudinal direction relative to each other are provided, which are each equipped with a set of bending members and controlled gripping pliers as a transfer device, which from a receiving position in which they the rod feeder take up several rods and clamp them, can be pivoted in the transverse direction of the rod into a delivery position in which they insert the rods into the space between the bending members.
  • GB-A-2 026 361 discloses a pipe bending system with a single bending table, in which a swivel arm arranged between the pipe feeding device and the bending table grips a pipe placed by the feeding device on an intermediate shelf, lifts it by 180 ° rotates and inserts in the tube transverse direction between the bending jaws of the bending table, after which a clamping sleeve engaging on one tube end moves the tube in the tube longitudinal direction through the bending jaws.
  • At least one of the gripping tongs can be controlled in the closing direction for clamping the bars during the bending process and / or in the opening direction during the adjustment of the frames.
  • the transfer device has a separate actuating device for each gripper and each gripper is in turn equipped with a separate actuating device for the controlled opening and closing thereof. This ensures safe guiding and transfer of the rods during all phases of the operation of the device.
  • each gripper is arranged at the end of a controlled telescopically adjustable swivel arm which is articulated on the inside of the corresponding frame.
  • the jaws of the gripping pliers are expediently pivoted together in the form of a gripping pliers head on the swivel arm. This improves the accuracy of the pick-up and transfer of the bars.
  • each gripping tongs has a clamping arm and a clamping lever which can be pivoted against it, which are articulated to one another by means of a bearing pin and can be moved relative to and away from one another by means of a drive device acting on both parts, and that the transfer device acts as an actuating device for each gripping pliers has a drivable eccentric crank which carries the bearing journal, is mounted on the inside of the frame, has a separately drivable swivel arm which is concentric with it and which is mounted on the inside of the frame, and a tab connecting the swivel arm to the clamping arm.
  • the racks in the region of the receiving position of their gripping tongs are assigned a run-up surface for rods fed in by the rod feed device in the transverse direction of the rod and the run-up surface has an alignment device for mutually aligning one end of the rods.
  • the rod feeder has advantageously above the run-up surfaces, a rod ejection device, with which rods can be fed individually one after the other to the run-up surfaces.
  • the rod feed device can also have parallel, endlessly rotating conveyor units between which the gripping tongs engage in their receiving position.
  • a discharge device for the rods is advantageously arranged above the inlet end of the conveyor units, which has at least one swivel channel for the discharge of one rod each, a distribution flap or the like preferably being located between the discharge device and the conveyor units. is provided for transferring the rod to or away from the conveyor units.
  • the gripping tongs are arranged in their receiving position in the region of the outlet end of an endless rotating conveyor element of the rod feed device.
  • the bending device 1 shown in Fig. 1 has two mutually spaced bending frames 2, 2 'for the simultaneous bending of several bars S.
  • a bar feed device with a bar ejection device 3 which, from a lateral feed device 4 bars S individually in the direction of the arrow P 1, i.e. in the longitudinal direction.
  • the schematically illustrated feed device 4 is suitable for feeding straightened, straight rods in standard lengths and is equipped with feed rollers (not shown), a length measuring device and scissors.
  • the feed device 4 can be preceded by a straightening device, so that rod material coming from drums or reels can also be processed. If the rod material is already in the required final production length, the length measuring device and the scissors are not required or out of operation.
  • the rod ejection device 3 has at least one pivotable discharge chute 5. After pivoting the discharge channel 5, the rod S falls in the direction of arrow P3 on an inclined ramp and sliding plate 7 at the top of the bending frames 2, 2 'and rolls into a transfer device 8 in the receiving position for several rods, the two pivot arms 9 and associated gripper head 10.
  • Each swivel arm 9 is pivotally mounted on the inside of one of the bending frames 2 and 2 'and according to the arrow P4 from the rod receiving position into a Bendable position.
  • the bending position is defined by the position of a bending mandrel 11 and bending pin 12 existing bending head 13 or 13 ', which in each of the bending frames 2 and 2' is suitably lowered and controlled operable. In an alternative embodiment, only the bending pin 12 can be lowered.
  • Each swivel arm 9 is divided into two parts and with its upper part carrying the gripping pliers head 10 is telescopically height-adjustable in relation to the lower part mounted on the bending frame in accordance with the double arrow P5 in order to be able to insert the rods into the bending position between the bending mandrel 11 and the bending pin 12 of the bending head 13.
  • the gripper head 10 is pivotally attached to the upper part of the swivel arm 9 in accordance with the double arrow P6 in order to be able to be positioned exactly in the receiving position and to be able to pass the rods S to the bending heads 13, 13 'of the bending frames 2, 2' exactly.
  • the gripper head 10 is provided with a lower jaw 14 'and with a pivotable according to the double arrow P7 upper jaw 14 ⁇ , which are able to move the rods S during the pivoting movement P4 of the swivel arm 9 from the receiving position into the bending position and also during the To hold on to bending. Furthermore, the rods S, which are held by the pliers jaws 14 ', 14', can be lifted out of the bending position so far with the help of the swivel arms 9 when changing the position of the bending tools that the bending direction needs to be changed, so that a lowering of the bending head or one of the Bending tools are not required.
  • the gripping tongs for transferring the rods from one side of the central bending mandrel 11 to the other side thereof are controlled accordingly.
  • the gripper jaw 14 ⁇ before the pivoting movement P4 of the swivel arm 9 can be folded back into the receiving position to such an extent that the jaw 14 ⁇ does not collide with the bars in the bending heads 13, 13 '.
  • the bending members 11, 12 bearing bending heads 13, 13 ' are according to the double arrow P21, ie in Rod longitudinal direction in the respective bending frames 2 and 2 'slidably arranged.
  • the bending members 11, 12 are each displaceable relative to the gripping pliers 10, so that the bending of a desired arc with a radius larger than the radius of curvature of the central bending mandrel 11 is possible by dividing the total bending into several successive partial bends.
  • the nominal curve is divided into several partial sections and the total bending angle into several partial bending angles, whereby a step-by-step displacement of the bending members 11, 12 relative to the gripping tongs 10 which clamp the rod material alternates with a partial bending by the partial bending angle until the desired nominal curve is completed.
  • the gripper head 10 After the gripper head 10 is filled with a predetermined number of rods S, these are fixed with the aid of the jaw 14 ⁇ . Before being fixed in the pliers head 10, the rods S are aligned against a stationary stop 15 'with the aid of an extendable aligning device 15 arranged on a stationary component, not shown.
  • the alignment device 15 is provided with a corresponding to the double arrow P8 stop part 15 '.
  • the bending frames 2, 2 'of the bending device 1 can be moved according to the double arrow P9 on only schematically indicated rails 16 in order to be able to bend the bars according to the reinforcement stirrups to be produced at different bending points.
  • the rods are held by one of the frames by means of the gripping pliers 10.
  • the gripping tongs 10 of the other frame are actuated to guide the bars arranged one above the other when the racks are adjusted in the sense of slightly opening the tongs in order to enable the bars to slide in the gripping jaws without changing the bar arrangement.
  • the bending device 1 is provided with a correspondingly shaped, fixed support plate 17 ⁇ , with the support surfaces 17, 17 'on the bending frames 2, 2' serves as a cover plate for the discharge device 3.
  • the support plate 17 ⁇ can also be formed in two parts, in which case each part is connected to a bending frame 2 or 2 'and is displaceable with this.
  • Fig. 1 shows, it is possible within the scope of the invention, with the help of an arranged on the rear of the bending device 1 additional rod feeder 18 rods S in the transverse direction thereof according to the arrow P10, preferably horizontally, the ramp plate 7 and thus the Feed over device 8.
  • the rod feed device 18 suitably consists of one or more parallel endless conveyor belts 19 which are guided at one end by rollers 21 rotating in the direction of the double arrow P 1 and driven by a device, not shown.
  • FIG. 2 shows a further exemplary embodiment of a device according to the invention.
  • the rods S are fed to a discharge and distribution device 22, which essentially corresponds to the discharge device 3 according to FIG. 1, via a feed device 4 according to FIG. 1, which, as in the exemplary embodiment according to FIG. 1, loads with different forms of rod material can be.
  • the rod ejection device 22 has at least one pivotable discharge channel 5, which is arranged on a channel support 6 and can be pivoted in accordance with the double arrow P2. Below the rod ejection device 22 is connected to a lateral, in the longitudinal direction of the bars guide plates 23 provided discharge channel 24, which guides the rods S in the direction of arrow P3 to a pivotable according to the double arrow P12 distribution flap 25.
  • the rods S can either be passed through an inclined baffle 26 above the rod feeder 18 in the direction of arrow P13 to the rod feeder 18 or, alternatively, via another rod baffle 18 pointing away, also inclined baffle 27 in the direction the arrow P14 a filing and intermediate magazine, not shown become.
  • This form of the ejection and distribution device is particularly advantageous for the removal of non-convertible remaining lengths, and is particularly intended for the case in which the higher working speed of the ejection and distribution device 22 is to be fully utilized compared to the relatively slow production speed of the bending device, in order to ensure continuous operation to guarantee.
  • the rods S are conveyed with the help of the rod feed device 18 in the direction of arrow P10 into the gripping pliers heads 10 of the transfer device 8 which, according to FIG. 2, engage in their first position between the parallel, endlessly rotating conveyor units of the rod feed device.
  • the pliers jaws 14 ⁇ close, if necessary only after an alignment device (not shown in FIG. 2) has aligned the ends of the rods, and the swivel arms 9 pivot from the receiving position into the bending position.
  • the drive and actuating elements necessary for the movement of the individual devices are designed in a known manner and are omitted in FIGS. 1 and 2 for the sake of clarity.
  • the gripping tongs could also engage before the end of the drain or below instead of in the receiving position between parallel conveyor units of the rod feed device 18 the end of the conveyor units or a single endlessly rotating conveyor element.
  • FIG. 3 An alternative embodiment of the transfer device 8 'has two gripping tongs 28, which are each designed according to FIG. 3, in which a view of the inside of the bending frame 2 is shown.
  • the gripping pliers 28 has an angled clamping arm 29 and a likewise angled clamping lever 30, which is formed from a short lever arm 30 'and a long lever arm 30'.
  • the clamping arm 29 is pivotally mounted at one end and the clamping lever 30 at its bending point on a common, eccentrically arranged bearing journal 31 of an eccentric crank 32, which is only indicated by a broken line.
  • a hydraulically actuated working cylinder 33 is mounted as the drive device, the piston rod 34 of which is articulated on the short lever arm 30 'of the clamping lever 30.
  • the piston rod 34 By actuating the drive device 33, the piston rod 34 performs a linear movement corresponding to the double arrow P16, so that the clamping lever 30 is pivoted relative to the clamping arm 29 according to the double arrow P17, whereby the rods S between the jaws 35 at the free end of the clamping arm 29 and the lever arm 30th ⁇ be clamped.
  • the clamping jaws 35 which are parallel to one another in the closed position, consist of flexible, wear-resistant material as possible, so that several rods S can be securely clamped even when the clamping jaws are not completely parallel and in the event of fluctuations in the diameter of the individual rods.
  • the eccentric crank 32 forming the swivel arm for the gripping tongs is mounted with its swivel axis 36, which lies on the axis XX of the central bending mandrel 11, on the inside of the respective bending frame 2 or 2 'and performs a swiveling movement accordingly under the action of a drive device, not shown the double arrow P18.
  • Concentric to the pivot axis 36 of the eccentric crank 32 is also a pivot arm 37 on the Inside of the respective bending frame 2 or 2 'pivotally mounted, which performs a pivoting movement according to the double arrow P1 under under the action of a further drive device, also not shown.
  • the mounting of the swivel arm 37 can be formed, for example, by a hollow shaft, not shown, in which the eccentric crank 32 is in turn mounted concentrically.
  • the free end of the swivel arm 37 is coupled to the clamping arm 29 via a connecting link 38, the articulation point being as close as possible to the free end of the clamping arm 29.
  • the connecting strap 38 forces the movements of the clamping arm 29 and the clamping lever 30 to be coupled.
  • the transfer device described above works as follows:
  • the rods S pass via a baffle and sliding plate 7 designed in accordance with the exemplary embodiment according to FIG. 1 into a collecting device 39, which is only indicated schematically and is arranged on a stationary component of the device, not shown.
  • the collecting device 39 preferably has a U-shaped cross section and a depth such that all the rods to be bent at the same time can be arranged in the correct position one above the other and can be picked up by the gripping pliers 28.
  • a side wall 40 of the collecting device 39 can optionally be designed to be displaceable parallel to the opposite side wall.
  • the gripping pliers 28 are pivoted into the receiving position defined by the collecting device 39 by actuating the eccentric crank 32 and the swivel arm 37 in accordance with the double arrow P20.
  • the clamping lever 30 pivots according to the double arrow P17 against the clamping arm 29, so that all the rods between the clamping jaws 35 are securely clamped.
  • rods are aligned at the end with an alignment device, not shown in FIG. 3, described with reference to FIG. 1.
  • the rods are held by means of the gripping pliers 28 of one of the bending frames, whereas the gripping pliers 28 of the other bending frame are opened slightly to guide the superimposed rods to prevent the rods from sliding between the clamping jaws 35 Allow changing the rod arrangement.
  • the eccentric crank 32 is actuated and the pivot arm 37 is pivoted such that the clamping arm is raised together in accordance with the double arrow P5 and the rods held by the closed gripping tongs 28 29 and the clamping lever 30 lifted out of the bending position, then by jointly pivoting the clamping arm 29 and the clamping lever 30 according to the double arrow P20 transferred from one side of the central mandrel 11 to the other side of the same and finally, after a change in position of the bending pin 12 by lowering them together the clamping arm 29 and the clamping lever 30 are lowered in accordance with the double arrow P5 in the new bending position.
  • the eccentric crank 32 and the swivel arm 37 are coordinated in their movements so that the superimposed rods during the transfer movements always stay parallel to the central mandrel 11.
  • the eccentric crank 32 and the swivel arm 37 are actuated again, so that the bars are lifted out of the bending position when the gripper 28 is closed by lifting the clamping arm 29 and the clamping lever 30 together according to the double arrow P Doppel.
  • the rods are pivoted by jointly pivoting the clamping arm 29 and the clamping lever 30 according to the double arrow P20 from the area of the bearing surface 17 of the bending frame 2 and finally by lowering the clamping arm 29 and the clamping lever 30 together and after opening the gripping pliers 28 with the aid of the clamping drive device 33 placed on a preferably inclined drain plate 41.
  • the transfer device 8 'according to FIG. 3 and the illustrated collecting device can also be used in the embodiment shown in FIG. 2.
  • the swivel arms 9 and the gripping tongs 10 for transferring the rods from one side of the central bending mandrel 11 to the other side thereof are actuated, as in the exemplary embodiment according to FIG. Furthermore, these swivel arms and gripping tongs are actuated to lift and eject the bars after all bending processes have been completed.
  • control device To control the controllable, movable devices and to coordinate the movements of these devices with each other, as well as to control and monitor the bar transport from the feeders to the bending device, in particular for the individual control of the swivel arms and gripping tongs, and to carry out the required bends on the bars a control device, not shown, is provided with which the drive and actuating elements are controlled.

Claims (20)

  1. Appareil (1) pour plier des tiges d'acier (S) en des éléments d'armature de béton, présentant un dispositif (3, 4, 18) pour amener des tiges (S) à un dispositif de transfert (8, 8') à l'aide duquel une botte de tiges considérée peut être engagée, entre des organes de pliage (11, 12), dans le sens transversal desdites tiges, caractérisé par le fait que deux bâtis (2, 2'), pouvant être réglés l'un par rapport à l'autre dans le sens longitudinal des tiges, avec espacement mutuel, sont équipés chacun d'un jeu des organes de pliage (11, 12) et des pinces de préhension (10; 28) actionnables par commande faisant fonction de dispositif de transfert (8; 8') et pouvant pivoter à partir d'une position de réception, dans laquelle elles prélèvent plusieurs tiges du dispositif (3, 4, 18) d'amenée des tiges, et coincent fermement ces dernières, dans le sens transversal desdites tiges jusqu'à une position d'insertion dans laquelle elles introduisent les tiges (S) dans l'espace intercalaire situé entre les organes de pliage (11, 12).
  2. Appareil selon la revendication 1, caractérisé per le fait que au moins une des pinces de préhension (10; 28) est commandable, dans le sens de fermeture, pour coincer des tiges (S) pendant le pliage et/ou, dans le sens d'ouverture, pendant le réglage des bâtis (2, 2').
  3. Appareil selon la revendications 1 ou 2, caractérisé par le fait que chaque pince de préhension (10) est disposée à l'extrémité d'un bras pivotant (9), réglable télescopiquement par commande, et articulée à la face interne du bâti (2, 2') correspondant.
  4. Appareil selon la revendication 3, caractérisé par le fait que les mâchoires de saisie (14', 14'') de la pince de préhension sont montées à pivotement conjoint, sur le bras pivotant (9), sous la forme d'une tête de pince de préhension (10).
  5. Appareil selon l'une des revendications 2 à 4, caractérise par le fait que le dispositif de transfert (8, 8') présente un dispositif d'actionnement distinct pour chaque pince de préhension (10; 28), et chaque pince de préhension (10; 28) est à son tour équipée d'un dispositif d'actionnement distinct, en vue de l'ouverture et de la fermeture commandées de ladite pince.
  6. Appareil selon l'une des revendications 1 ou 2, caractérisé par le fait que chaque pince de préhension (28) comprend un bras de serrage (29) et un levier de serrage (30) pouvant pivoter vers ledit bras, ces éléments étant articulés l'un sur l'autre au moyen d'un tourillon (31) et pouvant être déplacés, l'un par rapport à l'autre et à écart l'un de l'autre, au moyen d'un dispositif d'entrainement (33, 34) en prise avec les deux éléments; et par le fait que le dispositif de transfert (8'), faisant fonction de dispositif d'actionnement de chaque pince de préhension (28), comprend une manivelle d'excentrique (32) qui peut être entrainée, porte le tourillon (31) et est montée à la face interne du bâti de pliage (2, respectivement 2'), un bras pivotant (37) qui est concentrique à ladite manivelle, est monté à la face interne du bâti de pliage et peut être entrainé séparément, ainsi qu'une biellette (38) reliant le bras pivotant (37) au bras de serrage (29).
  7. Appareil selon l'une des revendications 1 à 6, caractérisé par le fait que aux bâtis (2) est associé, au voisinage de la position de réception de leurs pinces de préhension (10; 28), une rampe ascendante (7) pour des tiges délivrées par le dispositif (3, 18) d'amenée des tiges, dans le sens transversal desdites tiges, un dispositif d'alignement (15) étant associé à la rampe ascendante (7), en vue de l'alignement réciproque de l'une des extrémités des tiges (S).
  8. Appareil selon la revendication 7, caractérisé par le fait que le dispositif (3, 4, 18) d'amenée des tiges présente un dispositif (3) d'éjection des tiges, qui est installé au-dessus de la rampe ascendante (7) et à l'aide duquel des tiges peuvent être, individuellement et successivement, délivrées à ladite rampe ascendante.
  9. Appareil selon l'une des revendications 1 à 6, caractérisé par le fait que le dispositif (3, 4, 18) d'amenée des tiges comporte des unités parallèles de convoyage (19) qui tournent sans fin, entre lesquelles les pinces de préhension (10; 28) s'engagent dans leur position de réception.
  10. Appareil selon la revendication 9, caractérisé par le fait qu'un dispositif (3) d'éjection des tiges (S), installé au-dessus le l'extrémité d'arrivée des unités de convoyage (19), présente au moins une rigole pivotante (5) en vue de l'èjection d'une tige (S) respective, un volet répartiteur (25) ou élément similaire étant de préférence prévu, entre le dispositif d'éjection (3) et les unités de convoyage (19), de manière à transférer la tige sur les unités de convoyage (19), ou à l'écart de ces dernières.
  11. Appareil selon l'une des revendications 1 à 6, caractérisé par le fait que, dans leur position de réception, les pinces de préhension (10; 28) sont disposées au voisinage de l'extrémité d'évacuation d'un organe convoyeur, tournant sans fin, du dispositif (18) d'amenée des tiges.
  12. Appareil selon l'une des revendications 1 à 11, caractérisé par le fait que l'organe de pliage (12) tourné vers chaque pince de préhension (10; 28) est installé, dans le bâti (2, 2'), avec faculté d'abaissement en vue d'introduire les tiges (S) entre les organes de pliage (11, 12).
  13. Appareil selon l'une des revendications 1 à 12, caractérisé par le fait qu'une tête de pliage (13, 13') portant les organes de pliage (11, 12) est installée, dans le bâti (2, 2') correspondant, avec faculté d'abaissement en vue d'introduire les tiges (S) entre les organes de pliage (11, 12).
  14. Appareil selon la revendication 13, caractérisé par le fait que la tête de pliage (13, 13') est installée, dans le bâti (2, 2'), avec faculté de coulissement dans le sens longitudinal des tiges.
  15. Appareil selon l'une des revendications 1 à 14, caractérisé par le fait qu'une surface d'appui (17) destinée aux tiges (S) pliées est respectivement associée à chaque bâti (2, 2'), surface dont au moins une partie (17''; 17''') se trouve au-dessus de la plage de pivotement de la pince de préhension (10; 28) correspondante.
  16. Appareil selon l'une des revendications 1 à 15, caractérisé par le fait que les dispositifs d'actionnement du dispositif de transfert (8; 8') peuvent être commandés pour transférer les tiges (S), d'un côté d'un mandrin central de pliage (11) à l'autre côté de ce dernier, en vue de faire varier la direction de pliage.
  17. Appareil selon l'une des revendications 5 à 16, caractérisé par le fait que le dispositif d'actionnement de l'une des pinces de préhension (10; 28) peut être commandé pour guider plusieurs tiges (S) agencées en superposition, lors du réglage des bâtis de pliage (2, 2'), dans le sens d'une légère ouverture de la pince de préhension (10; 28).
  18. Appareil selon l'une des revendications 1 à 17, caractérisé par la fait que les dispositifs d'actionnement du dispositif de transfert (8, 8') peuvent être commandés, à l'achèvement de tous les processus de pliage, en vue de soulever les tiges (S) à l'écart de la position de pliage définie par les organes de pliage (11, 12), et en vue d'évacuer les tiges (S) hors de la région des bâtis de pliage (2, 2'), le dispositif d'actionnement des pinces de préhension (10; 28) pouvant également être commandé pour ouvrir ces dernières en vue d'une éjection des tiges (S), de préférence sur une tôle inclinée d'évacuation (41).
  19. Appareil selon l'une des revendications 1 à 18, caractérisé par le fait que le dispositif (3, 4, 18) d'amenée des tiges présente, à son extrémité d'évacuation, un dispositif collecteur (39) destiné aux tiges (S) et hors duquel lesdites tiges (S) peuvent être transférées à la position de pliage, à l'aide des pinces de préhension (10; 28).
  20. Appareil selon la revendication 19, caractérisé par le fait que le dispositif collecteur (39) est réalisé de section transversale configurée en U, et présente une paroi latérale (40) pouvant coulisser, en concordance avec le diamètre des tiges (S) à plier, transversalement par rapport au sens longitudinal desdites tiges.
EP90890230A 1989-09-20 1990-07-30 Appareil de pliage pour barres de fer à béton Expired - Lifetime EP0419441B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT2206/89 1989-09-20
AT220689A AT393641B (de) 1989-09-20 1989-09-20 Vorrichtung zum biegen von stahlstaeben zu betonbewehrungselementen
AT27990A AT394958B (de) 1990-02-08 1990-02-08 Vorrichtung zum biegen von stahlstaeben zu betonbewehrungselementen
AT279/90 1990-02-08

Publications (2)

Publication Number Publication Date
EP0419441A1 EP0419441A1 (fr) 1991-03-27
EP0419441B1 true EP0419441B1 (fr) 1995-04-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90890230A Expired - Lifetime EP0419441B1 (fr) 1989-09-20 1990-07-30 Appareil de pliage pour barres de fer à béton

Country Status (11)

Country Link
US (1) US5182932A (fr)
EP (1) EP0419441B1 (fr)
JP (1) JPH04501825A (fr)
AT (1) ATE121324T1 (fr)
AU (1) AU6055590A (fr)
CA (1) CA2042021A1 (fr)
DE (1) DE59008926D1 (fr)
ES (1) ES2020909A4 (fr)
GR (1) GR910300061T1 (fr)
PT (1) PT95366A (fr)
WO (1) WO1991004113A1 (fr)

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IT1399415B1 (it) * 2010-04-12 2013-04-16 Oscam Spa Impianto per la piegatura di barre metalliche con caricamento automatico delle barre, e metodo di caricamento utilizzato in tale impianto.
JP5692714B2 (ja) * 2010-05-12 2015-04-01 株式会社キャダック 鉄筋の曲げ加工装置
ITUD20110210A1 (it) 2011-12-23 2013-06-24 Piegatrici Macch Elettr Attrezzatura per l'alimentazione di prodotti metallici ad una macchina di lavorazione e relativo procedimento
ITTO20120083A1 (it) * 2012-02-01 2013-08-02 Oscam Spa Impianto di piegatura di barre metalliche
JP6654351B2 (ja) * 2015-03-02 2020-02-26 株式会社オプトン 曲げ加工装置
IT201700026704A1 (it) * 2017-03-10 2018-09-10 Umberto Bandini Metodo e dispositivo di scarico di barre
JP7128992B2 (ja) * 2017-11-20 2022-09-01 東陽建設工機株式会社 鉄筋曲げ加工装置
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IT202100031601A1 (it) * 2021-12-16 2023-06-16 Schnell Spa Apparecchiatura e metodo per la piegatura di barre
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Publication number Priority date Publication date Assignee Title
IT202100011660A1 (it) * 2021-05-06 2022-11-06 Schnell Spa Metodo e apparecchiatura per la piegatura di barre
WO2022234608A1 (fr) * 2021-05-06 2022-11-10 Schnell S.P.A. Procédé et appareil de traitement de barres

Also Published As

Publication number Publication date
ATE121324T1 (de) 1995-05-15
WO1991004113A1 (fr) 1991-04-04
ES2020909A4 (es) 1991-10-16
EP0419441A1 (fr) 1991-03-27
GR910300061T1 (en) 1991-11-15
DE59008926D1 (de) 1995-05-24
US5182932A (en) 1993-02-02
PT95366A (pt) 1992-05-29
AU6055590A (en) 1991-04-18
JPH04501825A (ja) 1992-04-02
CA2042021A1 (fr) 1991-03-21

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