EP0238026B1 - Method of and device for bending bar-shaped materials - Google Patents
Method of and device for bending bar-shaped materials Download PDFInfo
- Publication number
- EP0238026B1 EP0238026B1 EP19870103810 EP87103810A EP0238026B1 EP 0238026 B1 EP0238026 B1 EP 0238026B1 EP 19870103810 EP19870103810 EP 19870103810 EP 87103810 A EP87103810 A EP 87103810A EP 0238026 B1 EP0238026 B1 EP 0238026B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- arms
- bending device
- arm
- tooled
- 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.)
- Revoked
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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
- 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 invention relates to a system for processing bar material such as reinforcing steel comprising at least one bending device with one of these upstream material storage and a downstream storage for the processed material.
- the object of the present invention is to design a system of the type mentioned at the outset such that, with structurally simple means, continuous input and output of the rod material to be machined or machined to and from the bending device is possible without the need for the and issuing separate facilities are required.
- the object is achieved in that the material can be transported both to the bending device and after its processing away from it by means of arms pivotably arranged on both sides of the bending device, that the pivot axis of the arms in the transport direction of the material behind the bending device and vertically to the direction of transport, that in front of the bending device an inclined ramp-shaped element is arranged, on which material gripped by the arms can be placed, and that each arm has a step which runs in the region of the ramp-shaped element and in which the material placed in front of the bending device when lifting the Poor is durable.
- an insertion and ejection device for rod material is made available, which can be referred to as a fork device, which in turn has arms that can be pivoted laterally next to the bending device and are rigidly connected to a shaft.
- the shaft runs behind the tool, so that when the arms are pivoted, material that is to be machined and machined can be lifted and fed to the bending device or the tray.
- the arm is consequently divided into two areas, namely a rear area which is remote from the pivot axis, in which the material to be processed is placed and from which it can only slide up to the step, and a front area which grips the processed material and from which it slides onto the shelf.
- the arms are pivoted to such an extent that the step runs above the infeed runner before the arms are lowered again into the basic position so that the rod-shaped material is deposited on the infeed runner or skids and slide from there to the bending device can.
- the shaft with the arms extending rigidly therefrom can be moved as a unit parallel to the bar material, in order to make it possible to raise it in the points that bending does not occur; because the corresponding material can easily have lengths of 20 m.
- the arms extend over the pivot axis thereof in the direction of the tray.
- a system for processing bar material such as reinforcing steel is shown, which among other things. has a material store (12) with a template platform (14), a processing machine (16) with a bending device (18) and a storage rack (22) comprising a tray (20).
- Swiveling arms (24) and (26) are arranged laterally to the processing machine (16) and thus to the bending device (18), which are rigidly connected to a shaft (28) which is itself held by the processing machine (16) and parallel to the Longitudinal axes of the rod material (10) runs.
- the shaft (28) is in relation to the transport direction of the Bar material (10) from the template platform (14) via the bending device (18) to the tray (20) in the rear area, that is, arranged behind the bending device (18).
- each arm (24), (26) has a step (38) which serves as a stop for the rod materials (40) applied to the free end of the arms (24), (26) when the arms (24) , (26) according to FIG. 3 (position B) are pivoted in a raised position.
- the rod material (10) is loaded and unloaded to and from the bending device (18) without manual intervention or additional auxiliary elements are required.
- the procedure for loading and unloading the bar stock is as follows.
- bar material is placed on the end (42) of the arms (26) and (24) which is remote from the shaft (28).
- the material is provided with the reference number (40) there.
- the arms (24), (26) are then raised from the basic position A to the position B, as a result of which the material (40) slides against the shoulder formed by the step (38).
- the step (38) is above the inlet runners (34), (36), which are arranged in front of the bending device (18). If the arm (24) is now moved back to the basic position A (FIG. 4), the material (40) is placed on the upper edges (44) of the inlet runners (34) and (36) in order to then automatically move to the bending device (18 ) slip into an existing working channel. This is shown in FIG.
- the teaching according to the invention consequently enables simple loading and unloading of rod material to be machined to and from a processing machine with structurally simple means without the loading and unloading being accomplished by independent devices. Since, furthermore, the arms (24) and (26), which allow the loading and unloading to extend rigidly from the shaft (28), are connected to the processing machine (16), this can be moved without any problem, with the shaft (28) and so that the arms (24) and (26) take place. However, these can also be moved relative to the processing machine (16) in order to grasp the bar material (10) in such a way that bending does not occur. This is particularly important if the rod material is to be processed simultaneously by several processing machines that are aligned with one another.
- the displaceability of the shaft (28) with the arms (24) and (26) rigidly connected to it results from FIG. 1 by the solid or dashed representation, which itself is not provided with reference numerals.
Description
Die Erfindung bezieht sich auf eine Anlage zum Bearbeiten von Stangenmaterial wie Bewehrungsstählen umfassend zumindest eine Biegevorrichtung mit einem dieser vorgeordneten Materiallager und einer nachgeordneten Ablage für das bearbeitete Material.The invention relates to a system for processing bar material such as reinforcing steel comprising at least one bending device with one of these upstream material storage and a downstream storage for the processed material.
Aufgabe der vorliegenden Erfindung ist es, eine Anlage der eingangs genannten Art so auszubilden, daß mit konstruktiv einfachen Mitteln eine kontinuierliche Ein- und Ausgabe des zu bearbeitenden bzw. bearbeiteten Stangenmaterials zur bzw. von der Biegevorrichtung möglich ist, ohne daß hierfür für die Ein- und Ausgabe getrennte Einrichtungen erforderlich sind.The object of the present invention is to design a system of the type mentioned at the outset such that, with structurally simple means, continuous input and output of the rod material to be machined or machined to and from the bending device is possible without the need for the and issuing separate facilities are required.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Material sowohl zur Biegevorrichtung hin als auch nach dessen Bearbeitung von dieser weg mittels zu beiden Seiten der Biegevorrichtung als Einheit verschwenkbar angeordneter Arme transportierbar ist, daß die Schwenkachse der Arme in Transportrichtung des Materials hinter der Biegevorrichtung und senkrecht zu der Transportrichtung verläuft, daß vor der Biegevorrichtung ein zu dieser geneigtes rampenförmiges Element angeordnet ist, auf das von den Armen erfaßtes Material auflegbar ist, und daß jeder Arm eine Stufe aufweist, die im Bereich des rampenförmigen Elementes verläuft und in der das vor der Biegevorrichtung aufgelegte Material beim Anheben des Armes haltbar ist.The object is achieved in that the material can be transported both to the bending device and after its processing away from it by means of arms pivotably arranged on both sides of the bending device, that the pivot axis of the arms in the transport direction of the material behind the bending device and vertically to the direction of transport, that in front of the bending device an inclined ramp-shaped element is arranged, on which material gripped by the arms can be placed, and that each arm has a step which runs in the region of the ramp-shaped element and in which the material placed in front of the bending device when lifting the Poor is durable.
Es wird demzufolge eine Ein- und Auswurfvorrichtung für Stangenmaterial zur Verfügung gestellt, die als Gabeleinrichtung zu bezeichnen ist, die ihrerseits seitlich neben der Biegevorrichtung als Einheit verschwenkbare Arme aufweist, die starr mit einer Welle verbunden sind. Dabei verläuft die Welle in Transportrichtung des Materials betrachtet hinter dem Werkzeug, so daß beim Verschwenken der Arme gleichzeitig zu bearbeitendes und bearbeitetes Material angehoben und der Biegevorrichtung bzw. der Ablage zugeführt werden kann.Accordingly, an insertion and ejection device for rod material is made available, which can be referred to as a fork device, which in turn has arms that can be pivoted laterally next to the bending device and are rigidly connected to a shaft. When viewed in the direction of transport of the material, the shaft runs behind the tool, so that when the arms are pivoted, material that is to be machined and machined can be lifted and fed to the bending device or the tray.
Der Arm ist demzufolge in zwei Bereiche unterteilt, nämlich in einen zu der Schwenkachse entfernt liegenden hinteren Bereich, in dem das zu bearbeitende Material aufgelegt und von dem dieses nur bis zu der Stufe gleiten kann, und in einen vorderen Bereich, der das bearbeitete Material erfaßt und von dem dieses auf die Ablage gleitet. Dabei versteht sich, daß die Arme in einem Umfang verschwenkt werden, daß die Stufe oberhalb der Einlaufkufe verläuft, bevor die Arme wieder in die Grundposition herabgesenkt werden, damit das stabförmige Material auf die Einlaufkufe bzw. -kufen abgelegt und von dort zu der Biegevorrichtung gleiten kann.The arm is consequently divided into two areas, namely a rear area which is remote from the pivot axis, in which the material to be processed is placed and from which it can only slide up to the step, and a front area which grips the processed material and from which it slides onto the shelf. It goes without saying that the arms are pivoted to such an extent that the step runs above the infeed runner before the arms are lowered again into the basic position so that the rod-shaped material is deposited on the infeed runner or skids and slide from there to the bending device can.
Nach einem weiteren Vorschlag der Erfindung ist die Welle mit den starr von dieser ausgehenden Armen als Einheit parallel zu dem Stangenmaterial verschiebbar, um die Möglichkeit zu schaffen, dieses in den Punkten anzuheben, daß ein Durchbiegen unterbleibt; denn entsprechendes Material kann Längen von ohne weiteres 20 m aufweisen.According to a further proposal of the invention, the shaft with the arms extending rigidly therefrom can be moved as a unit parallel to the bar material, in order to make it possible to raise it in the points that bending does not occur; because the corresponding material can easily have lengths of 20 m.
Um eine problemlose Abgabe des bearbeiteten Materials auf die Ablage wie z.B. ein Ablagegerüst zu gewährleisten, ohne daß das Material auf einen die Biegevorrichtung umgebenden Arbeitstisch liegen bleibt, wird vorgeschlagen, daß sich die Arme über deren Schwenkachse in Richtung der Ablage erstrecken.In order to ensure problem-free delivery of the processed material onto the tray, such as a storage rack, without the material remaining on a work table surrounding the bending device, it is proposed that the arms extend over the pivot axis thereof in the direction of the tray.
Zu dem Neigungswinkel des rampenförmigen Elementes ist noch zu bemerken, daß dieser größer als der Reibungswinkel des Stangenmaterials ist, um sicherzustellen, daß dieses selbsttätig zur Biegevorrichtung hin entlang der Oberfläche des Elementes gleitet.In addition to the angle of inclination of the ramp-shaped element, it should be noted that this is greater than the angle of friction of the rod material, in order to ensure that it automatically slides towards the bending device along the surface of the element.
Weitere Einzelheiten ergeben sich aus der nachfolgenden Beschreibung sowie von in der Zeichnung dargestellten Ausführungsbeispielen.Further details emerge from the following description and from the exemplary embodiments illustrated in the drawing.
Es zeigen:
- Fig. 1
- eine Draufsicht einer Anlage zum Bearbeiten von Stangenmaterial und
- Fig. 2 bis 5
- Seitenansichten der Anlage nach Fig. 1 zu verschiedenen Bearbeitungszeitpunkten.
- Fig. 1
- a plan view of a plant for processing bar material and
- 2 to 5
- 1 at different processing times.
In Fig. 1 ist eine Anlage zum Bearbeiten von Stangenmaterial wie Bewehrungsstählen dargestellt, die u.a. ein Materiallager (12) mit Vorlagepodest (14), eine Bearbeitungsmaschine (16) mit Biegevorrichtung (18) sowie eine Ablage (20) umfassende Ablageroste (22) aufweist.In Fig. 1 a system for processing bar material such as reinforcing steel is shown, which among other things. has a material store (12) with a template platform (14), a processing machine (16) with a bending device (18) and a storage rack (22) comprising a tray (20).
Seitlich zu der Bearbeitungsmaschine (16) und damit zur Biegevorrichtung (18) sind verschwenkbare Arme (24) und (26) angeordnet, die starr mit einer Welle (28) verbunden sind, die selbst von der Bearbeitungsmaschine (16) gehalten und parallel zu den Längsachsen des Stangenmaterials (10) verläuft. Die Welle (28) ist dabei in bezug auf die Transportrichtung des Stangenmaterials (10) von dem Vorlagepodest (14) über die Biegevorrichtung (18) zur Ablage (20) im hinteren Bereich, also hinter der Biegevorrichtung (18) angeordnet.Swiveling arms (24) and (26) are arranged laterally to the processing machine (16) and thus to the bending device (18), which are rigidly connected to a shaft (28) which is itself held by the processing machine (16) and parallel to the Longitudinal axes of the rod material (10) runs. The shaft (28) is in relation to the transport direction of the Bar material (10) from the template platform (14) via the bending device (18) to the tray (20) in the rear area, that is, arranged behind the bending device (18).
Zu beiden Seiten der Biegevorrichtung (18) vorzugsweise im Bereich der Seiten (30) und (32) der Bearbeitungsmaschine (16) sind rampenförmige Elemente (34) und (36) angeordnet, die in Richtung der Biegevorrichtung (18) geneigt sind und auch als Einlaufkufen zu bezeichnen sind. Ferner weist jeder Arm (24), (26) eine Stufe (38) auf, die als Anschlag für die auf dem freien Ende der Arme (24), (26) aufgebrachten Stangenmaterialien (40) dann dienen, wenn die Arme (24), (26) gemäß Fig. 3 (Position B) in einer angehobenen Stellung verschwenkt sind.On both sides of the bending device (18), preferably in the area of the sides (30) and (32) of the processing machine (16), there are ramp-shaped elements (34) and (36) which are inclined in the direction of the bending device (18) and also as Inlet skids are to be designated. Furthermore, each arm (24), (26) has a step (38) which serves as a stop for the rod materials (40) applied to the free end of the arms (24), (26) when the arms (24) , (26) according to FIG. 3 (position B) are pivoted in a raised position.
Durch die Anordnung und Ausbildung der Arme (24) und (26) sowie des Vorhandenseins der Einlaufkufen (34) und (36) erfolgt erfindungsgemäß ein Be- und Entladen des Stangenmaterials (10) zur bzw. von der Biegevorrichtung (18), ohne daß manuelle Eingriffe oder zusätzliche Hilfselemente erforderlich sind.Due to the arrangement and design of the arms (24) and (26) and the presence of the inlet runners (34) and (36), according to the invention, the rod material (10) is loaded and unloaded to and from the bending device (18) without manual intervention or additional auxiliary elements are required.
Der Verfahrensablauf zur Be- und Entladung des Stangenmaterials ist der folgende.The procedure for loading and unloading the bar stock is as follows.
Gemäß Fig. 2 wird Stangenmaterial auf das von der Welle (28) entfernt liegende Ende (42) der Arme (26) und (24) gelegt. Das Material ist dort mit dem Bezugszeichen (40) versehen. Sodann werden die Arme (24), (26) von der Grundposition A in die Position B angehoben, wodurch das Material (40) gegen den durch die Stufe (38) gebildeten Absatz rutscht. In der Stellung B befindet sich die Stufe (38) oberhalb der Einlaufkufen (34), (36), die vor der Biegevorrichtung (18) angeordnet sind. Wird nun der Arm (24) in die Grundposition A zurückbewegt (Fig. 4), so wird das Material (40) auf die Oberkanten (44) der Einlaufkufen (34) und (36) abgelegt, um anschließend automatisch zu der Biegevorrichtung (18) in einen gegebenenfalls dort vorhandenen Arbeitskanal zu rutschen. Dies wird in der Fig. 4 durch den gestrichelten Pfeil (46) angedeutet. Nunmehr kann die Bearbeitung in der Maschine (16) mit der Biegevorrichtung (18) erfolgen. Gleichzeitig wird auf das Ende (42) neues stabförmiges Material (48) gelegt. Sobald die Bearbeitung abgeschlossen ist, wird der Arm (24) erneut in die Position B angehoben, wobei zum einen das Material (48) gegen die Stufe (38) rutscht und gleichzeitig das bearbeitete Material von dem von der Welle (28) ausgehenden Abschnitt (50) des Armes (24) bzw. (26) erfaßt und angehoben wird, um entlang der Oberfläche (52) des Abschnitts (50) in die Ablage (20) zu rutschen. Nunmehr wird der Arm (24), (26) in die Position A zurückbewegt, und der Ablauf gemäß Fig. 4 wiederholt sich von neuem.2, bar material is placed on the end (42) of the arms (26) and (24) which is remote from the shaft (28). The material is provided with the reference number (40) there. The arms (24), (26) are then raised from the basic position A to the position B, as a result of which the material (40) slides against the shoulder formed by the step (38). In position B, the step (38) is above the inlet runners (34), (36), which are arranged in front of the bending device (18). If the arm (24) is now moved back to the basic position A (FIG. 4), the material (40) is placed on the upper edges (44) of the inlet runners (34) and (36) in order to then automatically move to the bending device (18 ) slip into an existing working channel. This is shown in FIG. 4 indicated by the dashed arrow (46). Now the processing in the machine (16) can take place with the bending device (18). At the same time, new rod-shaped material (48) is placed on the end (42). As soon as the machining has been completed, the arm (24) is raised again to position B, whereby on the one hand the material (48) slides against the step (38) and at the same time the machined material from the section () 50) of the arm (24) or (26) is grasped and raised in order to slide along the surface (52) of the section (50) into the tray (20). The arm (24), (26) is now moved back into the position A, and the process according to FIG. 4 is repeated again.
Durch die erfindungsgemäße Lehre wird demzufolge mit konstruktiv einfachen Mitteln ein automatisches Be- und Entladen von zu bearbeitendem Stangenmaterial zu bzw. von einer Bearbeitungsmaschine ermöglicht, ohne daß das Be- und Entlanden von unabhängigen Einrichtungen bewerkstelligt wird. Da ferner die das Be- und Entladen ermöglichenden starr von der Welle (28) ausgehenden Arme (24) und (26) mit der Bearbeitungsmaschine (16) verbunden sind, kann diese problemlos verschoben werden, wobei eine synchrone Mitbewegung der Welle (28) und damit der Arme (24) und (26) erfolgt. Diese können jedoch auch relativ zu der Bearbeitungsmaschine (16) verschoben werden , um das Stangenmaterial (10) so zu erfassen, daß ein Durchbiegen unterbleibt. Dies ist dann besonders wichtig, wenn das Stangenmaterial gleichzeitig von mehreren Bearbeitungsmaschinen, die fluchtend zueinander ausgerichtet sind, bearbeitet werden soll. Die Verschiebbarkeit der Welle (28) mit den starr mit dieser verbundenen Armen (24) und (26) ergibt sich aus der Fig. 1 durch die durchgezogene bzw. gestrichelte Darstellung, die selbst mit Bezugszeichen nicht versehen ist.The teaching according to the invention consequently enables simple loading and unloading of rod material to be machined to and from a processing machine with structurally simple means without the loading and unloading being accomplished by independent devices. Since, furthermore, the arms (24) and (26), which allow the loading and unloading to extend rigidly from the shaft (28), are connected to the processing machine (16), this can be moved without any problem, with the shaft (28) and so that the arms (24) and (26) take place. However, these can also be moved relative to the processing machine (16) in order to grasp the bar material (10) in such a way that bending does not occur. This is particularly important if the rod material is to be processed simultaneously by several processing machines that are aligned with one another. The displaceability of the shaft (28) with the arms (24) and (26) rigidly connected to it results from FIG. 1 by the solid or dashed representation, which itself is not provided with reference numerals.
Claims (3)
- A device for bending bar-shaped materials as concrete steels, comprising at least one tool with a material stock arranged before it and a place of deposit for the tooled material arranged behind it,
characterized in that the material (10,40,48) can be transported to the tool (18) as well as after its tooling away from said tool by means of arms (24, 26) pivotably moved as a unit being arranged on both sides (30,32) of said tool (18), that the swivel axis (28) of the arms (24, 26) is extending in transport direction of the material (10,40,48) behind the tool (18) and perpindicularly to the transport direction, that a ramp-shaped element (34,36) inclined toward the tool (18) is arranged in front of it, on said element the material (40,48) grasped by the arms (24, 26) can be placed, and that each arm (24, 26) has a step (38) located in the range of the ramp-shaped element (34, 36), and in which the material (40,48) placed before the tool (18) can be held when lifting the arm. - A device according to Claim 1,
characterized in that by swivelling the arms (24,26) material to be (40, 48) tooled being positioned in the rear area (42) at a distance to the swivel axis (28), and material (40) tooled by the tool (18) being positioned in the front area can be lifted. - A device according to Claim 1,
characterized in that the arms (24,26) are rigidly extending from a shaft (28), which with respect to the tool (18) is movably arranged.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US839688 | 1986-03-14 | ||
| US06/839,688 US4702097A (en) | 1983-04-06 | 1986-03-14 | Process for the bending of rod-like materials |
| DE19863644482 DE3644482A1 (en) | 1986-12-24 | 1986-12-24 | DEVICE FOR MACHINING ROD MATERIAL |
| DE3644482 | 1986-12-24 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90100974.6 Division-Into | 1990-01-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0238026A1 EP0238026A1 (en) | 1987-09-23 |
| EP0238026B1 true EP0238026B1 (en) | 1991-06-26 |
Family
ID=25850880
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19870103810 Revoked EP0238026B1 (en) | 1986-03-14 | 1987-03-16 | Method of and device for bending bar-shaped materials |
| EP19900100974 Expired - Lifetime EP0371960B1 (en) | 1986-03-14 | 1987-03-16 | Method for bending bar-shaped materials |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19900100974 Expired - Lifetime EP0371960B1 (en) | 1986-03-14 | 1987-03-16 | Method for bending bar-shaped materials |
Country Status (2)
| Country | Link |
|---|---|
| EP (2) | EP0238026B1 (en) |
| GR (1) | GR3002783T3 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3919607C2 (en) * | 1989-06-15 | 1994-05-05 | Heinz Ruhl | Device for bending rod-shaped material |
| IT1248134B (en) * | 1991-02-28 | 1995-01-05 | A C M Srl Automatismi Costruzi | BENDING GROUP FOR BAR BEAMS |
| IT1252962B (en) * | 1991-10-15 | 1995-07-07 | M E P Macchine Eletroniche Pie | PROCEDURE FOR THE EXECUTION OF THE TAIL FOLDS IN THE IRONS FOR BUILDING IN BENDING / SHAPING MACHINES AND BENDING / SHAPING MACHINES FOR BUILDING IRONS FOR CONSTRUCTION ADOPTING THIS PROCEDURE |
| AT501151B8 (en) * | 2004-11-24 | 2007-02-15 | Univ Fuer Angewandte Kunst Wie | METHOD FOR CONTROLLING BENDING MACHINES |
| GR1005272B (en) | 2005-11-15 | 2006-09-12 | Method and system for bending wires, concrete bars and materials of prismatic cross section | |
| CN103658450A (en) * | 2013-11-12 | 2014-03-26 | 梁明光 | Automatic clamping mechanism of steel bar bending machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1752716A1 (en) * | 1968-07-05 | 1971-07-15 | Ernst Stegmann | Process for machine bending of wire and strip material and machine for carrying out the process |
| GB1306550A (en) * | 1970-12-23 | 1973-02-14 | Benton R E | Bending |
| US4161110A (en) * | 1977-04-28 | 1979-07-17 | EVG Entwicklungs- und Verwertungs-Gesellschaft mbH. | Automatic control device for a bending machine |
| AT367322B (en) * | 1980-01-16 | 1982-06-25 | Evg Entwicklung Verwert Ges | SYSTEM FOR THE PRODUCTION OF IRON OF DIFFERENT DESIGN AND SIZE, IN PARTICULAR OF REINFORCEMENT FELS |
| DE3206673A1 (en) | 1982-02-25 | 1983-09-01 | Helmut 6230 Kriftel Zahlaus | Device for cutting bar-shaped materials to size |
| DE3312397A1 (en) * | 1983-04-06 | 1984-10-11 | Helmut 6230 Kriftel Zahlaus | METHOD AND DEVICE FOR BENDING ROD-SHAPED MATERIALS |
-
1987
- 1987-03-16 EP EP19870103810 patent/EP0238026B1/en not_active Revoked
- 1987-03-16 EP EP19900100974 patent/EP0371960B1/en not_active Expired - Lifetime
-
1991
- 1991-09-25 GR GR91401417T patent/GR3002783T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0238026A1 (en) | 1987-09-23 |
| GR3002783T3 (en) | 1993-01-25 |
| EP0371960B1 (en) | 1993-10-06 |
| EP0371960A3 (en) | 1990-06-20 |
| EP0371960A2 (en) | 1990-06-06 |
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