EP0215006A1 - Device for bending conical wires. - Google Patents
Device for bending conical wires.Info
- Publication number
- EP0215006A1 EP0215006A1 EP85905317A EP85905317A EP0215006A1 EP 0215006 A1 EP0215006 A1 EP 0215006A1 EP 85905317 A EP85905317 A EP 85905317A EP 85905317 A EP85905317 A EP 85905317A EP 0215006 A1 EP0215006 A1 EP 0215006A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- diameter
- wire
- wires
- longitudinal section
- 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
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
- B21C47/04—Winding-up or coiling on or in reels or drums, without using a moving guide
- B21C47/045—Winding-up or coiling on or in reels or drums, without using a moving guide in rotating drums
-
- 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
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
Definitions
- the invention relates to a method for the round bending of conical wires acc. the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 4.
- Bending devices of the generic type which can also be used for wires.
- a straight wire is introduced into the device, bent circularly and placed on a turntable, reel or the like and forms a coil of wire there.
- Such devices fail when the wire does not have a constant cross-section, such as. '' B. is the case for wires for coil springs with progressive or degressive spring characteristic.
- wire for, for example, coil springs with a progressive spring characteristic which is only later divided into the longitudinal sections required for winding the individual springs.
- a wire varying between 2 or more longitudinal sections with different cross sections leads to flower-shaped wire structures which are only poorly suited for transport and further processing. This wire with alternately smaller and larger diameters is preferably produced by peeling.
- the invention has for its object to find a simple solution with which wires with a cross-section varying in length can be wound into annular coils.
- Deflection and the deflection applicable for the smaller cross section is sufficient to bend a transportable wire bundle.
- a delay module e.g. a throttle can be provided in the hydraulic system, which stretches the switching process over time. This prevents a kink in the wire.
- This solution can preferably be used for spring wires for automobiles that have a e.g. have a conical length of no more than 2 m and their coils are less than 3 meters in diameter.
- the time of switching for the preferably provided single switching point is selected according to claims 2 and 3.
- the selection of the point in time within the specified ranges depends on whether the wire is conical in the longitudinal section which changes in diameter, or whether the contour of this longitudinal section lies outside or inside the conical contour. With a contour lying essentially outside the conical contour the time of switching is placed in the vicinity of the cylindrical section with the smaller diameter; if the transition area is concave, the larger value is selected from the specified areas.
- the 30% to 40% range is the preferred range.
- the limit diameter is the diameter which has the ends of a region of variable diameter under consideration. Only those areas are considered in which the change in diameter does not go through a change of sign.
- the device for carrying out the method is characterized by at least 2 stops, between which the carriage is moved back and forth with the bending roller.
- a changeover device ensures the timely changeover between the two positions of the slide with the bending roller, which are characterized by the position of the stops.
- the end position of the bending roller with the greater deflection of the wire stands for the smaller wire diameter and the end position of the
- the entire travel range of the slide is regularly larger than the travel range which is determined by the stops and which is matched to a single wire contour with cylindrical longitudinal sections with different diameters.
- the adjusting drive for the slide with the bending roller is preferably formed in accordance with claim 6.
- the feature is gem.
- Claim 7 provided.
- the measuring device is - ix _
- the switchover device connected in terms of control to the switchover device and ensures the correct time to be selected for each wire profile for the switchover from the deflection for the smaller wire cross section to the larger one and vice versa. It preferably detects the diameter of the wire arranged between its sensors.
- the wire On the underside of a machine frame 1, a group of 3 rollers 3, 4, 5 is provided, through which a wire is guided in the direction of arrow 7.
- the wire consists of three different longitudinal sections.
- the longitudinal sections 6 and 9 are cylindrical, the section 8 is conical, it is enclosed by the limit diameters 25, 26. Only a part of the endless wire is shown. Cylindrical and conical sections are repeatedly arranged on the wire in an alternating sequence.
- the wire is bent round into a bundle in the round bending device and placed on a turntable 24 arranged below the round bending device.
- rollers 3, 4 are mounted in a stationary manner in the machine frame 1, the bending roller 5 is rotatably mounted on a carriage 2 which can be moved in the machine frame 1 transversely to the direction of travel (arrow 7) of the wire.
- the movement of the carriage 2 is controlled by means of a hydraulic cylinder 10 carried out.
- the rollers are driven in rotation, not shown.
- the direction of movement of the carriage 2 is determined with a switchover device 15 designed as a 2/2 way valve, which is switched over by a control unit 17.
- a switchover device 15 designed as a 2/2 way valve, which is switched over by a control unit 17.
- Two stops 11, 12 determine the end positions 22, 23 of the slide.
- a pump 16 sets the carriage 2 in motion and drives it against one of the two stops 11, 12.
- the 'cylindrical longitudinal section 9 of the wire is given the correct curvature so that it relaxes from its Radius of curvature fits on the turntable 24.
- the wire is given the correct curvature for the cylindrical longitudinal section 6 of the wire which is thicker in diameter.
- the circular bending device initially has the measuring device 21, which detects changes in the diameter of the wire with the aid of two sensing rollers 19, 20 and gives a pulse to the control unit 17 via a toggle switch 18.
- the round bending device works as follows:
- the two end positions of the slide 2 are fixed by the stops 11 and 12 for the wire to be bent and its contour, and the switching time or the switching diameter of the wire is determined in the control unit as a function of the contour of section 8.
- Switching takes place in a diameter range that starts from the smaller one Diameter is 20% to 60%, preferably 30% to 40% of the increase in diameter up to the larger diameter.
- the contour of section 8 which may deviate from the cone shape, is taken into account.
- the switchover point With a substantially slimmer contour than the conical longitudinal section 8 shown, the switchover point will be at the upper end of the specified ranges, while with a largely convex contour of this longitudinal section the switchover point will be close to the lower values of the specified ranges.
- the diameter of the wire is detected by the measuring device and the switching device 15 is set according to the specified diameter. If necessary, so if the wire is inserted with a thick cylindrical longitudinal section, the carriage is moved against the stop 12. As soon as the measuring device determines the diameter value provided for the switchover, because at this moment a conical longitudinal section passes through the measuring device, the slide 2 with the bending roller 5 is moved against the other stop with a delay which is caused by a module in the control unit 17 . This is done by a switching process effected on the switching device, which switches the inflow of
- Hydraulic fluid diverted from line 13 to line 14 or vice versa Apart from the empirical or arithmetical determination of the switchover point, the switchover does not take into account the contour or length of the longitudinal section 8 connecting the two cylindrical sections 6, 9.
Abstract
La cintreuse est utilisée pour des fils de section variant selon leur longueur, qui comprennent deux tronçons cylindriques (6, 9) et un tronçon conique intercalé (8). Le fil est cintré à l'aide de trois galets. Le galet cintreur (5) monté sur un chariot (2), détermine le degré de cintrage conféré au fil avançant. Le filet est cintré en dépit de son diamètre variable de façon telle qu'il se dépose avec une courbure régulière sur le plateau de réception (24). A cet fin, la courbure du tronçon conique (8) est changée entre la vraie courbure du tronçon cylindrique plus mince (9) et celle du tronçon cylindrique plus épais (6). Il suffit d'une commutation simple à un moment approprié pour obtenir une bobine de fil qui peut être déposée sur le plateau de réception (24). Le moment de commutation approprié est situé entre 20 et 60%, de préférence entre 30 et 40% du début de l'augmentation du diamètre du fil.The bender is used for wires of section varying according to their length, which include two cylindrical sections (6, 9) and an interposed conical section (8). The wire is bent using three rollers. The bending roller (5) mounted on a carriage (2), determines the degree of bending conferred on the advancing wire. The net is bent despite its variable diameter so that it settles with a regular curvature on the receiving plate (24). To this end, the curvature of the conical section (8) is changed between the true curvature of the thinner cylindrical section (9) and that of the thicker cylindrical section (6). A simple switchover at an appropriate time is sufficient to obtain a spool of wire which can be deposited on the receiving plate (24). The appropriate switching moment is between 20 and 60%, preferably between 30 and 40% of the start of the increase in wire diameter.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85905317T ATE56377T1 (en) | 1985-02-20 | 1985-10-18 | DEVICE FOR ROUND BENDING OF CONICAL WIRE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3505739 | 1985-02-20 | ||
DE19853505739 DE3505739A1 (en) | 1985-02-20 | 1985-02-20 | DEVICE FOR BENDING CONICAL WIRE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0215006A1 true EP0215006A1 (en) | 1987-03-25 |
EP0215006B1 EP0215006B1 (en) | 1990-09-12 |
Family
ID=6262954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85905317A Expired - Lifetime EP0215006B1 (en) | 1985-02-20 | 1985-10-18 | Device for bending conical wires |
Country Status (5)
Country | Link |
---|---|
US (1) | US4918958A (en) |
EP (1) | EP0215006B1 (en) |
JP (1) | JPS62501894A (en) |
DE (2) | DE3505739A1 (en) |
WO (1) | WO1986004837A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1227122B (en) * | 1988-09-30 | 1991-03-15 | Blm Spa | MACHINE FOR AUTOMATIC CURVING OF PIPES AND SIMILAR MATERIALS |
DE4129172C2 (en) * | 1991-09-03 | 1995-10-26 | Saar Federn Gmbh | Method of coiling coils with concentric turns of hard-rolled, tempered or otherwise heat-treated wire with periodically changing wire diameters |
ES2119507T3 (en) * | 1994-12-07 | 1998-10-01 | Wafios Maschinen Wagner | PROCEDURE AND DEVICE FOR THE OPTIMIZED MANUFACTURE OF HELICAL SPRINGS IN AUTOMATIC SPRING REELS. |
IT1278065B1 (en) * | 1995-05-12 | 1997-11-17 | Cml Costr Mecc Liri Srl | UNIVERSAL CURTAINING MACHINE. |
DE19604408C1 (en) * | 1996-02-07 | 1997-05-28 | Allevard Federn Gmbh | Spring screw manufacturing method |
IT1296311B1 (en) * | 1997-05-23 | 1999-06-25 | Cml Costr Mecc Liri Srl | MULTIFUNCTIONAL MODULAR CENTERING MACHINE AND LINEAR POSITIONING SYSTEM FOR IT |
US7076979B2 (en) * | 1998-04-07 | 2006-07-18 | Robert Bosch Gmbh | Method and device for producing curved lengths of spring band steel |
MC2489A1 (en) * | 1998-12-18 | 1999-11-22 | Snc Astori Et Ferretti Oti Eti | Method and device for manufacturing a braid composed of metallic wires |
GB2363091B (en) * | 2000-06-07 | 2003-10-08 | Donal Thomas Curry | A method, a tool and apparatus for coiling and elongated wire member |
GB0115547D0 (en) * | 2001-06-26 | 2001-08-15 | Beaudoin Michel | Skate blade curving device |
CA2454062C (en) * | 2001-07-18 | 2006-09-19 | Cml International S.P.A. | A hydraulic circuit for linearly driving a movable roller-holder slider of a pipe bending machine |
US6691414B2 (en) * | 2001-10-11 | 2004-02-17 | Richard D. Harding | Method and system for coating and fabricating spiral rebar |
US7032423B2 (en) * | 2003-02-28 | 2006-04-25 | Cml International S.P.A. | Hydraulic circuit for linearly driving a machine-tool slider in both directions |
KR20070083893A (en) * | 2004-11-30 | 2007-08-24 | 더 리전트 오브 더 유니버시티 오브 캘리포니아 | Sealed joint structure for electrochemical device |
CN102476136A (en) * | 2010-11-29 | 2012-05-30 | 中国北车集团大同电力机车有限责任公司 | Pneumatic bend device |
CN102179435B (en) * | 2011-03-30 | 2012-11-07 | 陕西科技大学 | Device and method for bending variable-curvature pipe |
ITTO20130942A1 (en) * | 2013-11-20 | 2015-05-21 | Cte Sistemi Srl | PLANT AND PROCEDURE FOR CURVING AND WINDING OF CONDUCTORS FOR THE CONSTRUCTION OF SUPERCONDUCTIVE ROLLS |
CN104289574A (en) * | 2014-10-15 | 2015-01-21 | 长治市钜星锻压机械设备制造有限公司 | Multi-die installing mechanism of coiling machine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1179534B (en) * | 1959-10-28 | 1964-10-15 | Schumag Schumacher Metallwerke | Device on tool machines, especially machines for bending wire and tubes, for moving the tool, especially a bending roller, according to a predetermined, non-linear law |
DE1752397A1 (en) * | 1968-05-20 | 1971-02-04 | Schraubenkombinat Veb | Bending device |
US3640112A (en) * | 1969-05-12 | 1972-02-08 | Republic Steel Corp | Coiling method and apparatus |
DE2222607A1 (en) * | 1972-05-09 | 1973-11-22 | Rheinstahl Ag | RING ROLLING MILL |
US4164133A (en) * | 1975-11-21 | 1979-08-14 | Holland Mechanics B.V. | Apparatus for forming circularly bent articles from a straight metal profiled strip |
JPS54148162A (en) * | 1978-05-12 | 1979-11-20 | Hitachi Ltd | Belt plate winder |
US4412438A (en) * | 1981-07-24 | 1983-11-01 | Gosudarstvenny Nauchnoissledovatelsky, Proektny I Konstruktorsky Institut Splavov I Obrabotki Tsvetnykh Metallov "Giprotsvetmetobrabotka" | Pipe bending machine |
-
1985
- 1985-02-20 DE DE19853505739 patent/DE3505739A1/en not_active Withdrawn
- 1985-10-18 WO PCT/DE1985/000403 patent/WO1986004837A1/en active IP Right Grant
- 1985-10-18 JP JP60504727A patent/JPS62501894A/en active Pending
- 1985-10-18 US US07/005,163 patent/US4918958A/en not_active Expired - Fee Related
- 1985-10-18 EP EP85905317A patent/EP0215006B1/en not_active Expired - Lifetime
- 1985-10-18 DE DE8585905317T patent/DE3579695D1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO8604837A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPS62501894A (en) | 1987-07-30 |
WO1986004837A1 (en) | 1986-08-28 |
DE3505739A1 (en) | 1986-08-21 |
DE3579695D1 (en) | 1990-10-18 |
EP0215006B1 (en) | 1990-09-12 |
US4918958A (en) | 1990-04-24 |
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