EP4041470A1 - Einrichtung zum strecken eines metallenen halbzeugs in form von einzelnen platten entlang einer reckstrecke mit einem reckgestell sowie verfahren zum strecken eines metallenen halbzeugs unter verwendung der einrichtung - Google Patents
Einrichtung zum strecken eines metallenen halbzeugs in form von einzelnen platten entlang einer reckstrecke mit einem reckgestell sowie verfahren zum strecken eines metallenen halbzeugs unter verwendung der einrichtungInfo
- Publication number
- EP4041470A1 EP4041470A1 EP20781473.2A EP20781473A EP4041470A1 EP 4041470 A1 EP4041470 A1 EP 4041470A1 EP 20781473 A EP20781473 A EP 20781473A EP 4041470 A1 EP4041470 A1 EP 4041470A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stretching
- plate
- clamping head
- finished product
- clamping
- 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
- B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
-
- 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
- B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
- B21D25/04—Clamping arrangements
-
- 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
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
Definitions
- the invention relates to a device for stretching a metal semi-finished product in the form of individual plates along a stretching section with a stretching frame, comprising pressure columns extending in the axial direction of the stretching section, a first clamping head in which a first narrow side of the semi-finished product to be stretched can be clamped and by means of stretching cylinders is axially displaceable, and a second clamping head, in which the second narrow side of the semi-finished product to be stretched can be clamped.
- the invention further relates to a method for stretching a metal semi-finished product in the form of individual plates along a stretching path using the device described above.
- Plate stretchers and plate stretching methods of the type described above are known in the prior art, for example from the publications DE 102016 105306 A1 and DE 102015214207 A1.
- Such plate stretchers generally have two clamping heads which are directed towards one another and which are used against one another for applying one along a
- Stretching direction directed clamping force are displaceable. They are used for stretching and / or straightening rolled or pressed stretched material, in particular for stretching and / or straightening individual metal sheets or plates that are clamped or wedged in the clamping heads. Depending on the design of the plate connector, both clamping heads can be moved during the stretching. Often, however, there are arrangements in which a Fixed clamping head and a displaceable clamping head are provided. Such an arrangement is known, for example, from DE 102015 14 207 A1, in which the movable clamping head can be displaced via hydraulic stretching cylinders and stretching rods, whereas the fixed clamping head comprises a slide that can be locked against pressure column elements of the stretching frame.
- Locking in different positions is desirable because when stretching individual plates or sheets, unlike in the quasi-continuous straightening of sheets wound into coils, work is carried out with different workpiece lengths or plate lengths or sheet lengths and that the stretching frame must be adjustable accordingly.
- a method and device for straightening metal sheets that are wound into coils are known, for example, from EP 1 923 150 B1 and US 2002/0104360 A1.
- Known plate stretchers are loaded and unloaded with plates from above by means of a crane system. The clamping heads must first be set to a dimension larger than the plate to be stretched. Then the clamping heads move together and feed the plate to the clamping devices integrated in the clamping heads.
- the clamps are opened after the stretching process and the clamping heads are moved back to a dimension larger than the stretched plate.
- This procedure has the disadvantage that a relatively large stroke of the stretching cylinder is required, since the clamping heads have to be set to a dimension that is greater than the length of the plate to be stretched.
- the non-productive times of the stretching process are high compared to the time required for stretching. Overall, the cycle time required is relatively long.
- the invention is based on the object of providing a plate stretcher of the type mentioned at the beginning and a corresponding method in which the non-productive times are reduced and thus the overall cycle time is optimized.
- the object is achieved by a device with the features of claim 1.
- the object on which the invention is based is also achieved by a method having the features of claim 7.
- Advantageous embodiments of the invention emerge from the subclaims.
- a device for stretching a metal semi-finished product in the form of individual plates along a stretching path with a stretching frame.
- the device comprises pressure columns extending in the axial direction of the stretching section, a first clamping head in which a first narrow side of the semi-finished product to be stretched can be clamped and which is axially displaceable by means of stretching cylinders, and a second clamping head in which the second narrow side of the semi-finished product to be stretched can be clamped is.
- the device according to the invention or the plate stretcher according to the invention is particularly characterized in that at least one axial feed and one axial outlet of the stretching frame are provided and that the clamping heads are designed so that the semi-finished product to be stretched axially through at least one of the clamping heads , is preferably feasible through both clamping heads.
- the plates can therefore be fed in and removed in the direction of the force applied during stretching.
- At least one clamping head preferably has at least one clamping head mouth which is open in the stretching direction, so that the plate to be stretched can be inserted from the outside in the axial direction into the clamping head mouth in question.
- the clamping head jaws are preferably in the stretching frame in the axial direction of the Stretching section facing away from each other and at least one clamping head is designed such that a plate can be passed through the relevant clamping head so that the plate can be positioned between the clamping heads.
- both clamping heads can be moved during the stretching or stretching of a plate.
- the second or the first clamping head is locked or lockable relative to the pressure column elements of the stretching frame.
- the stretching frame can have a locking device which, for example, corresponds to that described in DE 10 2015 214 207 A1.
- the clamping heads can have means for clamping and / or wedging the workpiece or the plate.
- the axial feed expediently comprises a feed roller table and the axial outlet an outlet roller table.
- the infeed roller table and / or the outfeed roller table can include driven rollers so that the plate can be fed in and the plate out in the axial direction of the stretching section.
- the feed roller table and / or the discharge roller table are preferably height-adjustable in order to be able to position the plate during loading or unloading at the mean height level of the plate connector or the stretching plane.
- the panels to be stretched are provided on roller tables above the floor.
- the feed roller table can take over the panel to be stretched at the level at which it is provided.
- the feed roller table is then brought up to the relevant clamping head and adjusted to the corresponding height level.
- the stretched sheet is transported away by means of the run-out roller table.
- a first and a second loading device are preferably provided, the first loading device being arranged on the first clamping head and the second loading device being arranged on the second clamping head, the loading devices each comprising driven rollers.
- the loading devices make it possible to position the plate to be stretched in height, to center the plate in the longitudinal axis and to drive the plate.
- the plate is preferably conveyed from below by means of driven rollers and with pressure rollers acting from above.
- the loading devices can each have a centering unit. These can be implemented, for example, in the manner described in DE 10 2016 105 306 A1, to which reference is also made in full for the purpose of disclosure.
- at least one transverse straightening press is provided between the first and the second clamping head.
- the cross straightening press can be designed in such a way that it applies a force acting perpendicular to the clamping force or stretching force to the plate.
- a plurality of mobile cross straightening presses are preferably provided, which can be moved along in the stretching direction of the plate during stretching.
- at least one cross straightening press can have a
- Centering device can be provided, which takes over the centering of the plate when it is fed to the second clamping head.
- the object on which the invention is based is further achieved by a method for stretching a metal semifinished product in the form of individual plates along a stretching path using the method described above Plate stretcher according to the invention.
- the procedure is characterized by the following procedural steps:
- Passing the plate through the first clamping head and feeding the plate to the second clamping head as well as conveying the stretched plate through the second clamping head can take place by means of the first and second loading devices.
- the plate is expediently straightened transversely during stretching by means of at least one transverse straightening press, ie transversely to the axial extent or transversely to the stretching force acting in the axial direction.
- At least one transverse straightening press can be moved along in the stretching direction of the plate during stretching.
- the plate Before it is fixed in the clamping heads by means of the first and / or the second loading device, the plate is preferably automatically positioned in a predetermined position within the stretching frame by means of at least one position measuring system. For example, light barriers can be installed in the clamping heads that detect the position of the plate. With the position information obtained in this way, the drive of the loading device can position the plate precisely within the stretching frame.
- Figure 1 is a side view of the board connector according to the invention.
- FIG. 2 shows a plan view of the plate stretcher according to FIG. 1
- the plate stretcher 1 comprises a stretching frame 2 with a first and a second clamping head 3, 4 that can be moved within the stretching frame 2.
- the stretching frame 2 includes a first and a second stretching cylinder 5, 6, the first stretching cylinder being on a first pressure column 7 and the second stretching cylinder 6 is supported on a second pressure column 8.
- the first and second pressure columns 7, 8 each form the abutment for the first and second stretching rods 9, 10 of the first and second stretching cylinders 5, 6.
- the first and second stretching rods 9, 10 are each aligned with the first and second pressure column 7, 8 arranged and form the stretching frame 2.
- the first clamping head can be moved along the stretching rods 9, 10 with the aid of the stretching cylinders 5, 6.
- a hydraulic drive acts on the stretching cylinders 5, 6 with a pressure medium, causing the first clamping head 3 to move in the axial direction of the stretching section formed by the stretching frame 2 relative to the second clamping head 4.
- the second clamping head is 4 locked relative to the pressure columns 7, 8, that is to say stationary, whereas the first clamping head 3 can be moved relative to the second clamping head 4.
- the clamping heads 3, 4 each have a clamping head mouth 11.
- the clamping head mouths face away from one another within the stretching frame 2.
- the clamping head mouth 11 of the first clamping head 3 is open in the direction of a feed roller table 12
- the clamping head mouth 11 of the second clamping head 4 is open in the direction of an outlet roller table 13.
- the clamping heads 3, 4 each comprise clamping jaws 16 which wedge the plate in the stretching direction and which can be opened to guide the plate or the semi-finished product through.
- Both the feed roller table 12 and the outlet roller table 13 comprise driven rollers.
- the first clamping head 3 is assigned a first loading device 14, which is arranged on the side facing the clamping head jaw 11, whereas the second clamping head 4 is assigned a second loading device 15, which is arranged on the side facing away from the clamping head jaw 11.
- the loading devices 14, 15 comprise driven rollers and cause the plate to be positioned and centered within the stretching frame 2.
- a plate (not shown) is fed from the right to the stretching frame 2 via the feed roller table 12 in the drawings. This plate is then taken over by the first loading device 14 and passed through the clamping head mouth 11 of the first clamping head 3 in a correspondingly centered manner.
- a first narrow side of the plate (narrow side leading in the conveying direction) is fed to the second clamping head 4 and inserted and fixed therein.
- the second narrow side of the plate (the narrow side lagging in the conveying direction) is or will be fixed in the first clamping head 3.
- the first clamping head 3 is then moved relative to the second clamping head 4, the plate being stretched between the first and the second clamping head 3, 4.
- the stretching process releases the clamping or wedging of the plate and the plate is conveyed further through the second clamping head 4 onto the outfeed roller table 13. Immediately after this, another plate can be loaded via the feed roller table 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019215676.2A DE102019215676A1 (de) | 2019-10-11 | 2019-10-11 | Einrichtung zum Strecken eines metallenen Halbzeugs in Form von einzelnen Platten entlang einer Reckstrecke mit einem Reckgestell sowie Verfahren zum Strecken eines metallenen Halbzeugs unter Verwendung der Einrichtung |
| PCT/EP2020/076926 WO2021069239A1 (de) | 2019-10-11 | 2020-09-25 | Einrichtung zum strecken eines metallenen halbzeugs in form von einzelnen platten entlang einer reckstrecke mit einem reckgestell sowie verfahren zum strecken eines metallenen halbzeugs unter verwendung der einrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4041470A1 true EP4041470A1 (de) | 2022-08-17 |
| EP4041470B1 EP4041470B1 (de) | 2024-02-21 |
Family
ID=72670700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20781473.2A Active EP4041470B1 (de) | 2019-10-11 | 2020-09-25 | Einrichtung zum strecken eines metallenen halbzeugs in form von einzelnen platten entlang einer reckstrecke mit einem reckgestell sowie verfahren zum strecken eines metallenen halbzeugs unter verwendung der einrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12121951B2 (de) |
| EP (1) | EP4041470B1 (de) |
| CN (2) | CN120228155A (de) |
| DE (1) | DE102019215676A1 (de) |
| WO (1) | WO2021069239A1 (de) |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1903638A (en) | 1931-07-03 | 1933-04-11 | Inland Steel Co | Stretching machine |
| DE1058961B (de) * | 1957-11-28 | 1959-06-11 | Hydraulik Gmbh | Arbeitsverfahren zum Recken von ebenen Werkstuecken auf einer Reckmaschine und Einrichtung zur Durchfuehrung des Verfahrens |
| GB893001A (en) * | 1960-01-02 | 1962-04-04 | Joshua Bigwood And Son Ltd | Improvements in stretching machines for metal strip or sheet |
| GB1122867A (en) * | 1966-07-07 | 1968-08-07 | Bigwood Joshua & Son Ltd | Improvements in stretch draw forming |
| DE1602551A1 (de) * | 1967-05-13 | 1971-03-11 | Siempelkamp Gmbh & Co | Hydraulische Streckpresse |
| FR1538250A (fr) * | 1967-09-29 | 1968-08-30 | Schloemann Ag | Machine à dresser par traction |
| JPS5325706B2 (de) * | 1974-09-11 | 1978-07-28 | ||
| JPS5343866Y2 (de) * | 1975-11-26 | 1978-10-21 | ||
| US4751838A (en) | 1985-11-18 | 1988-06-21 | Red Bud Industries, Inc. | Machine and process for leveling sheet metal strip |
| KR100323882B1 (ko) * | 1999-12-10 | 2002-02-08 | 이계안 | 버스의 사이드 판넬 인장장치 |
| US6205830B1 (en) | 2000-02-24 | 2001-03-27 | The Material Works, Ltd. | Method and apparatus for processing sheet metal |
| US6460391B1 (en) | 2001-02-07 | 2002-10-08 | Red Bud Industries, Inc. | Clamping assembly for sheet metal leveling machine |
| US20070044531A1 (en) | 2005-08-31 | 2007-03-01 | Red Bud Industries, Inc. | Method and apparatus for conditioning sheet metal |
| ES2307403B1 (es) | 2006-11-08 | 2009-10-08 | Fagor, S. Coop. | Maquina para el estirado de chapas metalicas. |
| JP4802180B2 (ja) | 2007-12-13 | 2011-10-26 | アイシン高丘株式会社 | 通電加熱装置及びそれを有する熱間プレス成形装置並びに通電加熱方法 |
| US9327334B2 (en) | 2008-06-12 | 2016-05-03 | Butech Bliss | Stretching device |
| ES2377628B1 (es) * | 2009-12-04 | 2013-03-25 | Fagor, S. Coop. | Máquina para el estirado de chapas metálicas. |
| DE102010049648A1 (de) * | 2010-10-28 | 2012-05-03 | Maschinenfabrik - Fr. W. Schnutz Gmbh & Co. Kg | Verfahren und Vorrichtung zum Planrichten von Lochblechen |
| CN102152115B (zh) * | 2011-01-05 | 2013-10-30 | 大连康丰科技有限公司 | 拉伸矫直一体机 |
| CN202683717U (zh) * | 2012-04-19 | 2013-01-23 | 大连汇程铝业有限公司 | 具有断带保护功能的拉伸机 |
| DE102015214207A1 (de) * | 2015-07-20 | 2017-01-26 | Sms Group Gmbh | Verriegelungsvorrichtung und Plattenstrecker |
| DE102015014207B4 (de) | 2015-11-04 | 2022-06-15 | Audi Ag | Vorrichtung und Verfahren zum Aussenden eines Funksignals bezüglich eines Einsatzfahrzeugs auf Einsatzfahrt |
| CN205146987U (zh) * | 2015-12-04 | 2016-04-13 | 二重集团(德阳)重型装备股份有限公司 | C形板拉伸机 |
| DE102016105306A1 (de) * | 2016-03-22 | 2017-09-28 | Sms Group Gmbh | Plattenstrecker sowie Plattenstreckverfahren |
| CN109277442B (zh) * | 2017-07-21 | 2023-09-22 | 中国铁建重工集团股份有限公司 | 一种f型钢弯曲装置和方法 |
-
2019
- 2019-10-11 DE DE102019215676.2A patent/DE102019215676A1/de not_active Withdrawn
-
2020
- 2020-09-25 CN CN202510659059.XA patent/CN120228155A/zh active Pending
- 2020-09-25 WO PCT/EP2020/076926 patent/WO2021069239A1/de not_active Ceased
- 2020-09-25 US US17/767,649 patent/US12121951B2/en active Active
- 2020-09-25 EP EP20781473.2A patent/EP4041470B1/de active Active
- 2020-09-25 CN CN202080071096.4A patent/CN114514080A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120228155A (zh) | 2025-07-01 |
| DE102019215676A1 (de) | 2021-04-15 |
| US20230249240A1 (en) | 2023-08-10 |
| CN114514080A (zh) | 2022-05-17 |
| WO2021069239A1 (de) | 2021-04-15 |
| US12121951B2 (en) | 2024-10-22 |
| EP4041470B1 (de) | 2024-02-21 |
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