EP3227086A1 - Dispositif de cintrage d'une pièce de profile à usiner - Google Patents

Dispositif de cintrage d'une pièce de profile à usiner

Info

Publication number
EP3227086A1
EP3227086A1 EP15813238.1A EP15813238A EP3227086A1 EP 3227086 A1 EP3227086 A1 EP 3227086A1 EP 15813238 A EP15813238 A EP 15813238A EP 3227086 A1 EP3227086 A1 EP 3227086A1
Authority
EP
European Patent Office
Prior art keywords
bending
holder
profile
workpiece
bending tool
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.)
Withdrawn
Application number
EP15813238.1A
Other languages
German (de)
English (en)
Inventor
Franz Steiner
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.)
Clever Contour GmbH
Stonawski Rudolf
Original Assignee
Clever Contour GmbH
Stonawski Rudolf
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 Clever Contour GmbH, Stonawski Rudolf filed Critical Clever Contour GmbH
Publication of EP3227086A1 publication Critical patent/EP3227086A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/08—Bending or folding of tubes or other profiled members
    • B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12—Thermoplastic materials

Definitions

  • the invention relates to a device for bending a profile workpiece, comprising a drivable bending tool and a Hal ⁇ ter for the profile workpiece, which has a cross section adapted to the profile of the profile workpiece passage for the Pro ⁇ fil workpiece, wherein the bending tool is drivable relative to the ⁇ sem holder.
  • WO 2011/044595 AI for example, a novel support means for adaptation to a body part has been proposed, with which conventional plaster casts to be replaced.
  • image data is taken by the relevant body part, which are evaluated to determine a 3D model with the help of computer means.
  • Ba ⁇ sis this 3D model a set of control signals for different driver stages is then generated by a numerical control.
  • This driver stages then head for via appropriate Trei ⁇ encoder signals various shaping means.
  • a suitable rod or strand material made of thermoplasti ⁇ plastic plastic elongated support elements are produced by means of the various mold devices. The rod material is supplied after heating by means of a heating device of a forming device with forming rollers.
  • a Druckeinstellech is provided for an upper forming roll to move them with the respective pressure and also with the respective adjustment relative to two lower forming rollers and thus corresponding bends, bends, indentations or the like. to be provided in the bar material.
  • protective devices such as elbow protectors, protective helmets, protective clothing for workers and athletes can also be produced from the individually adapted support elements. For example, an execution of a
  • DE 10 2004 002 539 A1 has disclosed a method and a device for bending an elongate profile body, in particular a pipe, from plastic which is deformable under elevated temperature.
  • the profile body is fed in the axial direction of a heating device for heating the regions of the profile body to be bent.
  • the heated bending areas are bent by means of a bending device.
  • Bending rollers are provided for bending, wherein the last in the direction of travel bending roller unit can be changed in position.
  • the bent portions of the profile body are finally cooled and the profile body is cut to the corre sponding ⁇ length.
  • the machining operations can be controlled by ⁇ means of a control device. Based on this roll bending a roll bending technique is disclosed in EP 2 674 279 AI, which can be applied to extruded profile workpieces.
  • a device for bending cylindrical workpieces in which a bending device is rotatably provided on a frame. At a distance from the bending device, a chuck is provided, which, however, serves only for holding workpieces, but not as a counter tool during bending.
  • the invention is Therefore, in particular, the aim of creating an efficient, versatile, nonetheless constructively simple bending device of the type mentioned, with which profile elements of different cross-sectional geometries can be bent easily and in various ways.
  • a counter tool for the profile workpiece in the ⁇ sen bending is formed, and that the bending tool is arranged on a Ge ⁇ steering arm structure rotatable about a plurality of axes.
  • elongated or elongated profile workpieces can be bent in a particularly simple manner, with the bending tool, preferably in the form of a bending mandrel, a variety of geometries can be generated.
  • a rod or strand material forming the profile workpiece is provided, which can be selected according to the particular application, for example from the materials mentioned in AT 507 888 Bl.
  • rod or strand material therefore preferably thermoplastics ⁇ art materials, but also metals, metal alloys or memory materials, ie materials with shape memory, as well as further plastics with (metal) reinforcements can be provided.
  • the profile workpieces can have a wide variety of cross-sectional geometries, for example a round or a rectangular one
  • Cross-section have, wherein the cross section of the profile work ⁇ pieces in the longitudinal direction of the profile workpieces is preferably un ⁇ changeable.
  • the semifinished product for the workpieces is obtained by extrusion.
  • the respective profile workpiece is guided through the outlet opening of the profile passage of the holder, which is preferably formed according to the cross section of the Pro ⁇ fil workpiece.
  • the holder is stationary, ie stationary during the bending process, arranged.
  • the holder can also adjustable, in particular displaceable and or or - for example, be arranged to be rotatable together with the feed direction of the profile workpiece ⁇ falling pivot axis.
  • the outlet opening can be provided on a front or inner bearing part of the holder per se, wherein the front or inner bearing part can be adjustably arranged on or in an outer bearing part or housing of the holder. This has the particular advantage that the front or inner bearing part can be designed as an insert part, which can be exchanged depending on the application.
  • this bearing part can be accommodated, for example, in a housing of Hal ⁇ age .
  • a narrow training also narrow bending radii the exit side of the front side of the holder or bearing part can be achieved.
  • thin material cross sections of the in principle preferably substantially tubular holder or bearing part sufficient, so that the profile workpieces can then be narrowed back to virtually 180 ° in itself.
  • the holder or its bearing part if one is provided, also basically stationary, without the possibility of Verstellens, such as shifting or Ver ⁇ rotate, be arranged, which otherwise ensure a particularly stable arrangement in a simple manner with relatively smaller dimensions can.
  • the holder can be easily tubular, whereby a very efficient construction can be achieved.
  • the tube shape must not over the entire length of the holder an equal diameter or have the same cross-section, but can, for example, to accommodate other units, as will be explained in more detail below, also have different diameters or cross-sections.
  • the present bending device is particularly suitable for bending extruded profiles, ie extrusion profiles, which are processed in a line containing an extruder with an extrusion tool and the bending device. It can certainly be provided, the profile workpieces after extrusion, still with sufficient heat and thus
  • the holder preferably has a heating device, wherein this heating device, for example, outside the holder or preferably inside can be mounted in the holder.
  • the heater can be present for example in the form of an electric heating coil, but it can also be provided any other type of heating, such as an infrared heat radiator, a Warm KunststoffZu Entry, a heating mat, especially a contact heater, but also generally radiant heater such as halogen lamps, quartz heater , etc.
  • the heater must not be contiguous, continuous in the path of the profile workpieces, but may also be formed of discrete heating elements, with discrete spaces.
  • the workpieces do not have to dwell in the area of the heating device, but they can be passed continuously through the area with the heating device, possibly at a reduced speed. On the other hand, it is also possible to move the heater and, if necessary, to hold the workpiece stationary.
  • the holder comprises a locking device for the production fil workpiece is assigned.
  • the holder can be associated with a workpiece feed device, for example with pinch rollers.
  • the holder or a ge ⁇ special front or inner bearing part thereof adjustable for example, rotatable and or or longitudinally displaceable, is arranged.
  • the passage in the holder may, similar to the heater, be discontinuous, but it may also be formed for reasons of good support and leadership of the profile workpieces by a continuous profile channel.
  • the bending tool may be formed in the manner of a bending mandrel, but it may in particular have at least one workpiece gripping ⁇ element to form- fitting to capture the profile-workpieces to be bent and thus achieve a directed bending in a simple manner.
  • the workpiece gripping element can also be arranged to be movable in the region of the bending tool.
  • the Grei ⁇ felement is removably arranged.
  • the gripping element or gripping elements can be exchanged for example with differing ⁇ chen profile workpieces which are to be bent, against another, adapted gripping member.
  • the bending tool can be arranged for design reasons, as well as in view of the desired movements of the bending tool when bending in a separate bearing head or bending head, preferably rotatable.
  • the bending tool could also merely in translation, depending on the desired bending Opera ⁇ tions possibly with a DRE hung around its own axis, to be moved when profile workpieces are to be bent.
  • the bending tool is ge ⁇ wear of a turntable base.
  • the turntable base carries the bending tool via pivotally connected articulated arms. Moreover, it is favorable here if one of the articulated arms is rotatably arranged on the turntable base.
  • thermoplastic material especially if it is heated in the region of the holder shortly before bending, can extend from the type of swelling.
  • the passage of the holder ie its Dimensio ⁇ discrimination in the transverse direction, no longer fit perfectly with the cross-sectional dimensions of the profiled workpieces.
  • the passage having a customizable to cross-sectional changes of the profile ⁇ workpiece mouth, for example in the manner of a louvre.
  • Fig. 1 is a side view of a device for bending profile workpieces
  • Figs. 2 and 3 a top view (Fig. 2) or diagrammatic An ⁇ view (Fig. 3) of this device for bending profiled workpieces;
  • FIG. 5 shows a schematic longitudinal section through the front part of a holder of a bending device according to FIGS. 1 to 4 together with a front region of a profile workpiece, wherein its bending possibilities, in particular by 180 ° to the rear, with dash-dotted lines are indicated;
  • Figure 6 is a schematic front view of a holder of the vorlie ⁇ constricting bending means, with the outlet opening for the profile workpieces and as an example a profile workpiece having a rectangular (or square) cross-section.
  • Fig. 7 in perspective views several possible profile workpieces
  • FIG. 8 is a perspective partial view of the bending of a profile workpiece using a bending tool with holding ⁇ flanges on the mandrel for gripping the profile workpiece, wherein furthermore the front part of the holder in a longitudinal ⁇ cut, for the purpose of illustrating a heating device, is illustrated;
  • FIG. 9 shows an illustration similar to FIG. 8 of a bending tool shown in dash-dotted lines, here with gripper elements which are adjustable relative to one another;
  • Fig. 10 is a schematic sectional view similar to FIG. 5, the bending of a profile workpiece with a linearly moving, hollow bending mandrel.
  • a device 1 for bending profile workpieces 2 for example made of plastic, in particular thermoplastic ⁇ plastic plastic, or also shown of metal; this device 1 is formed essentially of two main components, namely on the one hand a movable bending tool 3, which acts on the respective profile workpiece 2 to its bending as shown in FIG. 1, and a holder 4, which is preferably arranged stationary at least during bending and with an exit face or end face 5 forms a counter-tool when bending the profile workpieces 2, as well as directly from Fig. 1 it can be seen, where the workpiece 2 is shown in bending up and behind with the aid of the bending tool 3.
  • the actual bending tool 3 is for example, from ⁇ total six axes 6, 7, 8, 9, 10 and 11 rotatably or pivotably bar, as indicated in Fig. 1 with corresponding double arrows 6 to 11.
  • the bending tool 3 can in its Bewegun ⁇ conditions about these axes 6 to 11 in accordance with the desired bending operation, in particular with the help of a computer or a CNC program control or the like. Unit are controlled, but this is not illustrated in detail in the drawing; However, one of the ⁇ -like control is by the skilled person without further confi ⁇ gurable, so that a more detailed explanation thereof
  • Arrow 12 '- mounted on a turntable base or a turntable base 12 on a foundation 13, on the rest of the Hal ⁇ ter 4 by means of a frame 14 is fixedly arranged.
  • a fixed relation between the bending unit 15 and the holder 4 together with the frame 14 is given.
  • the bending tool 3 is moved or driven depending on the bending to be performed, in particular also translational movements when bending back of the workpieces 2, as indicated schematically in Fig. 1 at 16, apart from corresponding pivoting movements and combined pivoting and sliding movements are possible ,
  • corresponding rotary actuators in the form of, for example, electric, hydraulic or pneumatic motors 9 ⁇ , 10 ⁇ , 11 ⁇ shown.
  • Corresponding drives are vorgese ⁇ hen for the movements about the axes 6, 7 and 8, even if this is not in the drawing in particular
  • FIGS. 1, 2 and 3 exemplify various Biegevor ⁇ gears, with bending of the workpieces 2 in different directions to the rear, illustrating relative to the holder 4, wherein it is apparent that the bending tool 3 which is preferably formed like a mandrel, at each workpiece 2 attacks and so the Workpiece 2 in the desired direction pushes, for example, upwards and then backwards, as shown in FIG. 1, or to the side, as shown in FIG. 2 and also according to FIG. 3. Examples of the formation of bending tools 3 are shown in FIGS. 8 and 9, and will be explained in more detail below.
  • the bending unit 15 in the illustrated embodiment a gel ⁇ karm structure with two articulated arms 17, 18 which are hinged together (see, the axes 8 and 9) and further on the one hand on Turntable base 12 pivotally mounted (see the axes 10 and 11) attached and on the other hand a bending or bearing head 3 'with the rotatable (see axis 6) bending tool 3 pivot ⁇ bar (axis 7) wear.
  • Fig. 1 is further illustrated in the right part only very schematically that the respective profile workpiece 2 is supplied at the side facing away from the bending unit 15 side of the holder 4 whose back, for example, from a very schema ⁇ only illustrated extruder 20, with whose help the
  • Fig. 1 is also, for example within a rear portion of the holder 4, within a housing 21, only very cal ⁇ schematically illustrates that the feed of the profile workpieces 2, a workpiece feed device 22, for example with feed rollers 23, and Furthermore, a locking device 24, for example, with jaws 25, the holder 4 may be assigned.
  • the drive directions (directions of rotation) of the rollers 23 and vertical adjustment of the jaws 25 are indicated schematically in Fig. 1 with arrows.
  • Corresponding drives for example with the aid of pneumatic or hydraulic motors, if appropriate also electric motors, are familiar to the person skilled in the art and need no further explanation here.
  • the feed device 22 may also be provided to grasp the workpiece 2 by means of gripping elements of the bending tool 3 and to pull out of the holder 4 and then to bend.
  • the holder 4 may further has a front, hollow bearing portion 26 having a comparatively small total cross-section, for achieving narrow bending radii for the workpieces 2 on the off ⁇ takes page 5, wherein the bearing part 26 Example ⁇ , as a separate part, such as an exchange or spare part, provided and may be connected to the hollow rear housing part 21 approximately in the region of a constriction 27 as shown in FIG.
  • the front bearing part 26 can also be about the longitudinal axis, ⁇ accordingly the feed axis of the profile workpieces 2, be rotated, and it can also be an axial displaceability for the bearing part 26 relative to the rear housing part 21 by corre ⁇ chende plain bearings or roller bearings for the Bearing part 26 may be present in the housing 21, but this is not shown in detail in the drawing, cf. However, the double arrow in Fig. 1 in Be ⁇ rich below the bearing part 26th
  • the housing 21 can also, as indicated schematically by dash-dotted lines 21 'in FIG. 1, be pulled far forward, in the direction of the exit side 5.
  • Fig. 1 is shown schematically outside the bearing part 26, a heater 28, which is formed for example by an electric heating spiral ⁇ .
  • Such an external heating device 28 is conceivable if the wall of the bearing part 26 is designed to be particularly thin and, moreover, as heat-conductive as possible.
  • Holder 4 or bearing part 26 is mounted in order to hold as directly as possible the profile workpieces 2 at the desired temperature for the bending deformation can.
  • the heating device 28 As the heating device 28, however, other embodiments, such. IR (infra-red) radiators, fan heaters, heating mats, halogen or quartz heaters, and they can extend over shorter or longer distances.
  • the respective workpiece 2 need not necessarily stop at the heating device 28 for heating, it can also be heated during its passing.
  • a profile channel for the profile workpiece provided in the holder 4 or bearing part 26 is designated by 29 in FIG. Also in the schematic sectional view of FIG. 5
  • This profile channel 29 as a passage 29 in the interior of Hal ⁇ age 4 and its bearing part 26 can be seen, wherein the advanced through this channel 29 profile workpiece 2 before bending ⁇ gen (in full lines) and after its upward bending - see. the bent workpiece 2 '- or down - s. the workpiece 2 '' - is illustrated; see. See also Fig. 6.
  • the channel 29, in contrast to the example shown, does not necessarily have to extend through the holder 4 with a continuous wall.
  • Fig. 6 also shows that the opening (mouth) of the channel 29 at the outlet side 5 in the dimensions - temperature ⁇ dependent - may vary, see. also the dot-dash line 5 'of the larger square in FIG. 6.
  • FIG. 4 illustrates a modification of the device 15 according to FIGS. 1 to 3 in that the actual bending unit 15 is fastened, for example, to a ceiling 30 by means of a turntable base 12; the holder 4, however, is in turn mounted on a foundation 13 by means of a frame 14.
  • the bending unit 15 according to FIG. 4, by the way, corresponds to what their construction in detail, that of FIG. 1 to 3, in particular, in turn, the bending tool 3 in a bearing head 3 'rotatably arranged (namely about the axis 6 in Fig. 1) is.
  • the exit side 5 of the holder 4 or, where appropriate, its bearing ⁇ part 26 in turn forms the counter tool 5 'when bending the profile workpieces 2, these workpieces 2 in particular also as shown in FIGS. 1, 2 and 4 is particularly clearly visible the edge or the edge of the exit side 5 can be bent.
  • the bending unit 15 may again provide for movements (about six axes 6 to 11), as shown in FIG. 1 to 3, for the bending tool 3.
  • FIG. 7 for example, five different profile workpieces 2, with different profiles, illustrated for better understanding, wherein the workpieces, for example, a quadra ⁇ tical profile, a circular profile, a triangular profile, rectangular profile or a dovetail profile and belie ⁇ bige other Can have cross-sectional profiles.
  • the workpieces for example, a quadra ⁇ tical profile, a circular profile, a triangular profile, rectangular profile or a dovetail profile and belie ⁇ bige other Can have cross-sectional profiles.
  • the workpieces for example, a quadra ⁇ tical profile, a circular profile, a triangular profile, rectangular profile or a dovetail profile and belie ⁇ bige other Can have cross-sectional profiles.
  • the bending tool 3 is better comprehend the workpiece 2 during bending and gege ⁇ surrounded by corresponding movement of the bending tool bending 3 (s. also the arrows in Fig. 8) subject.
  • one or more openings 33 are provided at the front, rounded end of the bending tool 3 in order to supply cooling medium, for example cooling air, to the workpiece 2 for its cooling.
  • the heating ⁇ device 28 relative to the holder 4 can be longitudinally and / or transversely movable.
  • the bending tool of FIG. 9 is formed with gripping ⁇ elements 31, 32, here in the form of hook-like projections on the plate-shaped extensions of the bending tool mandrel 3, wherein a (the cross section of Pro ⁇ fil workpiece 2 in cross section the here square, for example) adapted gripping opening between the not shown in Fig. 9 inner end face of the bending tool 3 and the outer hook-shaped gripping elements 31, 32 results.
  • dash-dotted lines is a modified training and position (open position) of the bending tool 3, with two separate tongue-like projections 34, 35 shown, for example, to be able to bend workpieces 2 with a larger cross-section.
  • the bending unit 15 have been shown in FIGS. 8 and 9 be ⁇ already above in connection with the holder 4 and the workpiece 2 illustrated in more detail, so that a renewed
  • FIG. 10 A considerably simplified embodiment of a bending unit 15, with a hollow bending tool 3, is shown in FIG. 10 in a schematic longitudinal section.
  • the bending tool 3 is moved back and forth linearly only in accordance with the double arrow 36 in order to bend the profile workpiece 2 back into itself, cf. also the position 2 'in Fig. 10.
  • Such a simplified embodiment, with a simplified movement during bending, is particularly useful when a large number of workpieces is to bend in the manner shown, in which then the procure ⁇ a single bending tool mandrel 3, with the holder 4 or the workpiece 2 adapted dimensions, rewards; for other workpiece dimensions, other bending tool mandrels 3 would be required, these bending tool mandrels 3 then insbesonde ⁇ re as interchangeable inserts on a bending tool carrier (not shown in Fig. 10) may be provided, in principle in a manner similar to the exchangeable bending tool mandrels 3 with attachment in one and the same bearing head.
  • Fig. 10 is further indicated by a dashed line an internal form - or bending surface 37 to the workpieces 2 with this bending surface 37, especially initially from the direction of their supply, so their longitudinal axis direction, to bend away laterally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

L'invention concerne un dispositif (1) destiné à cintrer une pièce de profilé à usiner (2), comportant un outil de cintrage (3) monté mobile et entraînable, ainsi qu'un moyen de retenue (4) pour la pièce de profilé (2) ; le moyen de retenue (4) comporte un canal de profilé (29) pour la pièce de profilé à usiner (2) et au niveau de la sortie (5) du canal un contre-outil (5`) pour la pièce de profilé à usiner (2) est formé lors de son cintrage, l'outil de cintrage (3) pouvant être entraîné par rapport à ce contre-outil (5`).
EP15813238.1A 2014-12-02 2015-12-02 Dispositif de cintrage d'une pièce de profile à usiner Withdrawn EP3227086A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50875/2014A AT516371B1 (de) 2014-12-02 2014-12-02 Einrichtung zum Biegen eines Profil-Werkstücks
PCT/AT2015/050307 WO2016086253A1 (fr) 2014-12-02 2015-12-02 Dispositif de cintrage d'une pièce de profile à usiner

Publications (1)

Publication Number Publication Date
EP3227086A1 true EP3227086A1 (fr) 2017-10-11

Family

ID=54936317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15813238.1A Withdrawn EP3227086A1 (fr) 2014-12-02 2015-12-02 Dispositif de cintrage d'une pièce de profile à usiner

Country Status (5)

Country Link
US (1) US20170266864A1 (fr)
EP (1) EP3227086A1 (fr)
CN (1) CN107000306A (fr)
AT (1) AT516371B1 (fr)
WO (1) WO2016086253A1 (fr)

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CN112893547A (zh) * 2020-12-29 2021-06-04 冉启华 一种小型医疗支架折弯机及其折弯方法

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CN107000306A (zh) 2017-08-01
US20170266864A1 (en) 2017-09-21

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