EP3122485A1 - Overturnable bending machine - Google Patents
Overturnable bending machineInfo
- Publication number
- EP3122485A1 EP3122485A1 EP15718619.8A EP15718619A EP3122485A1 EP 3122485 A1 EP3122485 A1 EP 3122485A1 EP 15718619 A EP15718619 A EP 15718619A EP 3122485 A1 EP3122485 A1 EP 3122485A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending machine
- machine according
- horizontal
- machining
- bending
- 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.)
- Granted
Links
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
- B21D7/08—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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/12—Bending rods, profiles, or tubes with programme control
Definitions
- the present invention generally relates to machines for bending tubes or profiles, in particular metal tubes or profiles, bars or the like.
- the machines for bending tubes or profiles, in particular made of metal, have already been known in the art for a long time and are used by artisans and industries. They serve to obtain curved tubes/profiles applicable to numerous technical fields, for example to process engineering plants (chemical, air-conditioning, fluid cooling and/or heating plants, etc.), as well as to obtain support and/or safety and protection structures, such as parapets, podiums and scaffolding, to name just a few examples.
- a first type being the matrix and countermatrix type, but in this case, since the matrix has a fixed radius, it is not possible to use the same machine to obtain curves of any radius on an initially straight tube, profile, or the like.
- the second type of machine employed to bend tubes, profiles, or the like, in particular made of metal, is the bending machine, which is able to bend tubes or profiles according to a substantially arbitrary radius, settable by the operator.
- This second type of tube-bending machine corresponding in general to that addressed in the present invention patent application, has a series of deforming rollers, some of which are fixed and other are movable.
- the exact operation of these machines has already been known for a long time and does not need to be discussed in greater detail. They are also very complex, given that the forces involved can attain very high values and therefore it is necessary to take countermeasures in order not to unduly limit the lifespan of the machine components.
- the machines must also be very precise to adhere exactly to the machining tolerances required, in particular in relation to the radius of the curve made on the tube, profile, or the like.
- the object of the present invention is to provide a bending machine for bending tubes, profiles or the like, in particular made of metal, that can solve the above problems.
- FIGURE 1 is the front view of the machine of the invention, in vertical position;
- FIGURE 2 is the side view of the machine of Fig. 1, always in vertical position;
- FIGURE 3 is the side view of the machine of the preceding figures, in horizontal position;
- FIGURE 4a shows (in enlarged scale) the detail of the locking system of the machine in vertical position (see Fig. 1; left side);
- FIGURE 4b shows the same detail of Fig. 4a, but in a side view (see also Fig. 2).
- Figure 1 shows very schematically the bending machine of the present invention in vertical position, seen frontally.
- the bending machine of the invention can assume both the vertical position and the horizontal position, to remedy the problems of the prior art. In this manner it is not necessary to purchase different machines, but it will be sufficient for the artisan (or the user in general) to only have the machine of the present invention, which due to its versatility is adapted to various situations, being able to work both "horizontally” and “vertically”.
- the machine in the embodiment shown essentially comprises a machine body 1 mounted so as to be able to oscillate around a horizontal axis, on a frame consisting of a base 4 (fixed to the ground) and two sides 3a, 3b integral with and orthogonal to the base 4 itself.
- the "face" of the machine in Fig. 1 constitutes the machining platform 2, which in this position is perfectly vertical while in the horizontal position of the machine (see Fig. 3) is obviously perfectly horizontal.
- the bending machine has the ordinary deforming rollers; in the present case two (lateral) fixed deforming rollers 9a, 9b and one (central) movable deforming roller 9c.
- the rollers 9a, b, c are all mounted on respective axes (directed horizontally in Fig. 1 and vertically in Fig. 3).
- the movable deforming roller 9c is actuated (e.g., by a pneumatic or hydraulic actuation system) and can slide vertically along a guide (slot or window), omitted for the sake of simplicity from the figures enclosed to the present application.
- the piece 12 to be bent e. g. a profile, tube, bar or the like, indicated by the reference numeral 12, is initially straight and is arranged resting on the two fixed deforming rollers 9a, 9b, which have an annular groove adapted to receive the cross section of the piece 12, so as to be able to retain it with respect to the transverse direction (direction orthogonal to the plane of Fig. 1 that is parallel to the axis 10 of the deforming rollers). Then the movable deforming roller 9c is lowered (by means of said actuation system), along its vertical straight guide (not shown in the figures), until abutting on the upper side the profile 12 still perfectly rectilinear and horizontal.
- the movable deforming roller 9c is lowered (by means of said actuation system), along its vertical straight guide (not shown in the figures), until abutting on the upper side the profile 12 still perfectly rectilinear and horizontal.
- the deforming roller 9c then deforms the piece 12 with a determined deflection coefficient set by the operator.
- a suitable actuation system of known type, one is then able to progressively bend the entire piece 12 for a predefined length.
- the length of the piece 12 which has already “passed” the deforming rollers is, as known, constantly monitored, for example by a measuring device 11 (an encoder or the like), so as to exactly match the desired machining length at the end of the machining of the piece 12.
- the encoder 11 is also able to constantly measure the curvature (that is the deflection) of the piece 12 on the extrados that is the outer part, convex towards the outside, of the curve formed by the piece 12; moreover, the same encoder 11 is suitably calibrated (in the testing phase of the machine) by using a rigid bar, to find the zero point of curvature, or "zero bar” point, as it is called in such parallel patent application by the same Applicant of the present patent application.
- An encoder and a calibration method of this kind could be used also in the bending machine of the present invention, to initially calibrate the machine in the testing phase and thus obtain results that more closely match the needs of the end user.
- encoder 11 it is also intended two encoders, that is a system comprising two encoders, one to measure/monitor the length of the piece 12 during machining, and the other to measure/monitor the deflection coefficient with greater precision than conventional systems. Therefore, in general, the term by “encoder” it is intended in the present patent application (including the claims) any measuring system/device suitable for the purposes outlined above.
- the piece 12 is too long (e.g. 6 meters), the already bent part of the piece 12 rests with its own weight, giving rise to a moment of the force of gravity which tends to increase the radius of curvature of the curve already formed on the piece 12, thus making the result of the machining less precise.
- a system that allows the machine body 1 to oscillate around a horizontal axis, with respect to the left and right sides 3a and 3b integral with the base 4 (which is fixed to the ground).
- This system allows the bending machine of the present invention to be used in complete safety, both in the vertical position (Fig. 1) and in the horizontal position (Fig. 3).
- the machine body is preferably obviously locked in these positions (vertical or horizontal).
- the same system that allows the machine body 1 to rotate around the horizontal oscillation axis therefore also preferably comprises a locking system which allows locking of the machine body 1 in the vertical and/or horizontal position, preferably in both positions.
- the machine body 1 has two side walls 13a, 13b.
- two first perforated bushings 5 and two second perforated bushings 6 are integrally formed (one on each side wall), which are all extended towards the outside of the respective side wall 13a and 13b of the machine body 1.
- the sides (left and right) 3a, 3b of the fixed frame of the machine have two semicircular projections 14, 14, on which an oscillation/rotation axis 8 of the machine body 1 - that is of the respective machining platform 2 with respect to the sides 3a and 3b - is centrally provided, said oscillating axis 8 being only schematized in the figures (a clear representation of the relative bearings, holes and the like is omitted).
- the first perforated bushing 5 is laterally offset with respect to the oscillation axis 8, and the same applies to the second perforated bushing 6.
- first perforated bushings 5 and the second perforated bushings 6, integral in pairs with the corresponding side wall (13a or 13a), are only shown by dotted lines in Fig. 4b (and in Figs. 2 and 3), since they are obviously hidden by the respective annular projection 14 of the corresponding side 3a or 3b. From Figure 4b, it is also noted that, with respect to the oscillation axis 8, the second bushing 6 is also angularly offset by 90° from the first bushing 5.
- Each of said upper circular projections 14 of one side bears a non-threaded through hole 16 (Fig. 4; offset to the right in Fig. 4b with respect to the position of the oscillation axis 8 of the machine body 1), for the passage of the threaded pin 15 of a corresponding threaded hand wheel 7 for locking the machine body 1 in position.
- the non-threaded through hole 16 for the passage of the pin 15 of the hand wheel 7 is offset to the right (on the side 3a) with respect to the oscillation axis 8.
- the first bushings 5 serve for locking in the vertical position, as shown by the figures, given that the threaded pin 15 of the hand wheel is in this case inserted in the threaded hole 17 of the first bushing 5.
- the latter is first rotated by 90° (after having unscrewed the two pins 15 of the two hand wheels 7 from the threaded holes 17 of the two first bushings 5), next the same two threaded pins 15 of the two hand wheels 7 are screwed into the two second bushings 6, that is in the threaded holes 18 thereof.
- a motor could also be employed (hydraulic or electric) to move (rotate) the machine body 1 with respect to the fixed frame 3, 4.
- the actuation could be by means of pedal or button.
- the actuation could also comprise several degrees of inclination of the machining platform 2 (Fig. 1), not necessarily only 0° and 90° with respect to the horizontal (workshop floor).
- the machining platform 2 could also have any structure, not perfectly flat, so that the figures enclosed to the present patent application are only illustrative and only serve to express the inventive concept and not to limit the invention with respect to what is already known in the art of this field.
- rollers 9a and 9b could in fact be movable in the horizontal direction only, to make (preliminary) adjustments in that direction.
- the distribution of masses in the machine body 1 can be such that the machine body 1 is perfectly balanced with respect to the oscillation axis 8, so that in this case the machine body
- the distribution of masses in the machine body 1 can be such that the machine body 1 naturally tends (once unlocked) towards the vertical position of
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRM20140159 | 2014-03-27 | ||
PCT/IB2015/052235 WO2015145385A1 (en) | 2014-03-27 | 2015-03-26 | Overturnable bending machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3122485A1 true EP3122485A1 (en) | 2017-02-01 |
EP3122485B1 EP3122485B1 (en) | 2018-01-31 |
Family
ID=50819882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15718619.8A Active EP3122485B1 (en) | 2014-03-27 | 2015-03-26 | Overturnable bending machine |
Country Status (3)
Country | Link |
---|---|
US (1) | US20170128997A1 (en) |
EP (1) | EP3122485B1 (en) |
WO (1) | WO2015145385A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108817157A (en) * | 2018-05-29 | 2018-11-16 | 泰安华鲁锻压机床有限公司 | The magnetic suspension curved device and method of F rail |
CN112208086B (en) * | 2020-09-17 | 2022-11-08 | 重庆市万州区泳昌护栏有限公司 | Blind window processing is with curved device of banding strip heat of being convenient for location |
CN113882296B (en) * | 2021-10-09 | 2022-11-29 | 尚欢欢 | Highway rail guard assembly quality |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3052277A (en) * | 1958-07-17 | 1962-09-04 | Wirth Arno H Fa | Bending machine |
US4080815A (en) * | 1975-06-09 | 1978-03-28 | The Boeing Company | Pinch and forming roll assembly for numerically controlled contour forming machines |
US4117702A (en) * | 1977-06-06 | 1978-10-03 | The Boeing Company | Rolling machines for contouring tapered structural members |
IT1226199B (en) * | 1988-11-23 | 1990-12-21 | Piegatrici Macch Elettr | PLANT USING A UNIVERSAL STRAIGHTENING BENDING MACHINE. |
AT393640B (en) * | 1989-09-20 | 1991-11-25 | Evg Entwicklung Verwert Ges | DEVICE FOR BENDING ROD-SHAPED MATERIAL TO CONCRETE REINFORCEMENT ELEMENTS |
IT1236362B (en) * | 1989-10-20 | 1993-02-25 | Fabro Giorgio Del | INDEPENDENT CONTROLLED AND INDEPENDENT TILTING DEVICE |
IT1294256B1 (en) * | 1997-08-29 | 1999-03-24 | Cml Costr Mecc Liri Srl | UNIVERSAL BENDING MACHINE WITH FIXED AND VARIABLE RAYS |
IT1308472B1 (en) * | 1999-05-04 | 2001-12-17 | Tauring S P A | BENDING MACHINE FOR PIPES, PROFILES OR SIMILAR |
ATE286439T1 (en) * | 2000-01-14 | 2005-01-15 | Cosma Int Inc | A ROLL BENDING MACHINE, A BUMPER AND A METHOD FOR PRODUCING THE SAME |
DE20203583U1 (en) * | 2002-03-06 | 2002-08-29 | Rasi Maschb U Handels Gmbh | Device for detecting a direction angle, in particular a bending angle, a workpiece, in particular a bent part |
DE102007013902A1 (en) * | 2007-03-20 | 2008-09-25 | Universität Dortmund | Device for profile bending |
IT1400500B1 (en) * | 2010-06-22 | 2013-06-11 | Crippa Spa | PROCEDURE FOR THE BENDING OF TUBES, WIRES OR TAPES OF METAL A SERPENTINA OR SPRING AND CURVED MACHINE TUBES, WIRES OR METAL TAPES FOR THE MANUFACTURE OF A SERPENTINE OR A SPRING PRESENTING A PERFORMANCE WITH A PROPELLER INCLUDING A PLURALITY OF LOOPS |
-
2015
- 2015-03-26 WO PCT/IB2015/052235 patent/WO2015145385A1/en active Application Filing
- 2015-03-26 US US15/129,588 patent/US20170128997A1/en not_active Abandoned
- 2015-03-26 EP EP15718619.8A patent/EP3122485B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3122485B1 (en) | 2018-01-31 |
WO2015145385A1 (en) | 2015-10-01 |
US20170128997A1 (en) | 2017-05-11 |
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