EP4566736A1 - Machine de cintrage à diamètres précis - Google Patents

Machine de cintrage à diamètres précis Download PDF

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Publication number
EP4566736A1
EP4566736A1 EP23849566.7A EP23849566A EP4566736A1 EP 4566736 A1 EP4566736 A1 EP 4566736A1 EP 23849566 A EP23849566 A EP 23849566A EP 4566736 A1 EP4566736 A1 EP 4566736A1
Authority
EP
European Patent Office
Prior art keywords
bending
machine
guides
profile
skates
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.)
Pending
Application number
EP23849566.7A
Other languages
German (de)
English (en)
Inventor
Aránzazu GUERRERO GONZALEZ
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.)
Grupo Industrial Kempchen Comdiflex Sa
Original Assignee
Grupo Industrial Kempchen Comdiflex Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grupo Industrial Kempchen Comdiflex Sa filed Critical Grupo Industrial Kempchen Comdiflex Sa
Publication of EP4566736A1 publication Critical patent/EP4566736A1/fr
Pending 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/03—Apparatus with means to keep the profile in shape
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • 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
    • B21D43/003—Positioning devices
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/12—Bending rods, profiles, or tubes with program control

Definitions

  • This application relates to a profile-bending machine which allows producing curves, circles and other curved objects with a particularly exact and accurate radius or diameter.
  • a well-known example is made up of three pulleys or rollers. When passing between the rollers, which are closer than the thickness of the bar or profile, the latter must bend. Depending on the distance, the diameter or radius of curvature is larger or smaller.
  • the elasticity of the profile means that the accuracy of that radius or diameter is less than desirable.
  • the profile more or less recovers its position, so the result is approximate but not exact. Even more so when the thickness of the bar has tolerances.
  • the invention consists of a machine for bending exact diameters according to the independent claims, the variants of which solve the problems of the prior art.
  • the profile-bending machine is based on a two- or three-roller bending die. It comprises a series of radial guides centred on a point.
  • the bending die is mounted on one of the guides and profile-supporting skates are disposed on the remaining guides.
  • it incorporates a length-adjustable guide arm concentric with the guides, and freely rotatable about the centre point of the guides, with an adjustable guide.
  • skates and the bending die are connected to each other by a mechanism for coordinating the position thereof on the respective guide.
  • the bending machine shown in figure 1 comprises a generally round table (1), with several radial guides (2) starting from the same point.
  • the position of the skates (3) is controlled so that the imaginary line joining same is the exact curve to be defined with the profile to be bent.
  • the position of each skate (3) can be measured digitally or analogically.
  • the skates (3) have a simple positioning function of the profile to be bent by means of stops (31) that define the position of the profile on the skates (3). These skates (3) mark the inside diameter of the ring.
  • This type of bending dies is made up of two or three pulleys or rollers between which the profile passes. At least one roller (41,42) is motorised and moves the profile between the rollers, for which it needs to receive a certain deformation.
  • the inner roller (41) is disposed in the same position on the guide (2) as the stops (31).
  • the outer rollers (42) are the motorised ones.
  • the movement of the skates (3) is coordinated by a mechanism, so that the position of the skates (3) and the bending die (4) on the corresponding guide (2) is identical.
  • the mechanism may be similar to that of an umbrella, with a central element movable along a bar perpendicular to the guides (2) and connected by means of tie rods to all the skates (3) (not shown).
  • tie rods to all the skates (3) (not shown).
  • an endless screw carrying the movable central element are possible.
  • the precision of the bending diameter is achieved due to one guide arm (5) disposed in the centre of the guides (2) and of extendable length.
  • This guide arm (5) is calibrated to ensure that its length is exact and the target diameter can thus be defined.
  • the purpose of this guide arm (5) is to guide the profile so that it fits the skates (3) of the table without deflection.
  • the guide arm (5) has one first end (51) that is fixed freely rotatable about the centre of the guides (2). This allows the guide arm (5) to rotate freely and without resistance.
  • a capsule or guide (53) for the passage of the profile is defined at the second end (52).
  • the figure shows that the guide arm (5) is adjustable in length so that the guide (53) is in the correct position.
  • the guide (53) can also be of a fixed length and the guide (53) can be moved on the guide arm (5).
  • the guide arm (5) is moved merely by the friction generated by the profile as it passes through the guide (53) and carries the profile to the skates (3). This ensures that the profile is in the exact position, passing through all the skates (3) until the circle is approximately closed.
  • the machine operator temporarily joins the two ends together, and the bent profile can be sent to the shearing machine and the welding station.
  • the connection can be made with adhesive tape, to prevent any movement of the ends.
  • the machine includes a power supply source, and other elements such as emergency stop button, start/stop indicators...
  • the machine has a control panel for adjusting its parameters, such as spacing between rollers, position of the skates (3)... and containing the electrical (circuit breakers%) and electronic safety elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP23849566.7A 2022-08-02 2023-03-14 Machine de cintrage à diamètres précis Pending EP4566736A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES202230719A ES2925114B2 (es) 2022-08-02 2022-08-02 Máquina curvadora de diámetros exactos
PCT/ES2023/070151 WO2024028526A1 (fr) 2022-08-02 2023-03-14 Machine de cintrage à diamètres précis

Publications (1)

Publication Number Publication Date
EP4566736A1 true EP4566736A1 (fr) 2025-06-11

Family

ID=83558340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23849566.7A Pending EP4566736A1 (fr) 2022-08-02 2023-03-14 Machine de cintrage à diamètres précis

Country Status (3)

Country Link
EP (1) EP4566736A1 (fr)
ES (1) ES2925114B2 (fr)
WO (1) WO2024028526A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888103A (en) * 1971-01-25 1975-06-10 Robin Renshaw Forming apparatus
US4055065A (en) * 1976-11-22 1977-10-25 Hossfeld Manufacturing Co. Method and apparatus for simultaneous edge bending of stair rail cap stock and channel stock
DE102016012677A1 (de) * 2016-10-20 2018-04-26 Technische Universität Dortmund Vorrichtung und Verfahren zum Biegen von Profilen oder Stabmaterial, insbesondere unsymmetrischer und offener Profile oder Stabmaterial
CN113305184B (zh) * 2021-04-23 2023-06-30 上海钱豹机电设备有限公司 一种型材折弯装置

Also Published As

Publication number Publication date
ES2925114B2 (es) 2023-03-02
WO2024028526A1 (fr) 2024-02-08
ES2925114A1 (es) 2022-10-13

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