EP1221348A1 - Hebestütze für eine Blechbiegemaschine - Google Patents

Hebestütze für eine Blechbiegemaschine Download PDF

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Publication number
EP1221348A1
EP1221348A1 EP01403370A EP01403370A EP1221348A1 EP 1221348 A1 EP1221348 A1 EP 1221348A1 EP 01403370 A EP01403370 A EP 01403370A EP 01403370 A EP01403370 A EP 01403370A EP 1221348 A1 EP1221348 A1 EP 1221348A1
Authority
EP
European Patent Office
Prior art keywords
toothed wheel
support
sheet metal
toothed
pivoting
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
Application number
EP01403370A
Other languages
English (en)
French (fr)
Other versions
EP1221348B1 (de
Inventor
Morikatsu Matsuda
Gérard R. Quesnel
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.)
Amada Europe SA
Original Assignee
Amada Europe 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 Amada Europe SA filed Critical Amada Europe SA
Publication of EP1221348A1 publication Critical patent/EP1221348A1/de
Application granted granted Critical
Publication of EP1221348B1 publication Critical patent/EP1221348B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0281—Workpiece supporting devices

Definitions

  • the object of the present invention is to propose means to mitigate or eliminate the drawbacks mentioned above.
  • the first toothed wheel be kept stationary in rotation and is connected to the second toothed wheel by a belt notched meshing without play with the teeth of the first and second gear wheels, that the second gear wheel is unrolled by turning the inside of the toothed belt under the action of the pivoting arm moving the rotation shaft and the second gear along an arc of circle, that the pivoting movement of the second gear integral with the accompanying table causes the pivoting of this last around the rotation shaft and that the upward movements and descending from the accompanying table are synchronized with the pivoting movement thereof, so that the extension of the upper support face of said table always passes through the front edge of the press brake die.
  • the force of reaction of the said table may loosen the toothed belt and lead imprecise positioning of the table and the sheet metal resting on it.
  • the pivot shaft is supported in two bearings each mounted in a lateral support arm integral with the part top of either vertical edge of the sliding and steered support towards the accompanying table, which the pivot shaft carries on its side and on the other side of the pivoting arm a first freely rotating toothed wheel relative to the pivot shaft, only on either side of the end front of the swivel arm, located on the side of the table accompanying, the rotation shaft is secured to a second wheel gear in alignment with the corresponding first gear, that each second gear is fixed on a radial link arm provided at the rear end of the accompanying table, that a roller chain or the like goes around the first and second gear wheels aligned and each first gear is associated with means of tension and repulsion including those associated with the first gear cooperating with the first chain act on the upper strand of this in a first direction corresponding to the direction of the needles of a watch, so that the rollers of the first chain are applied against the rear flank of the
  • the sheet metal guide comprising an accompanying table 1 of a bending plate 2 is associated with a known press brake 3 of the type comprising a swan neck frame not shown, a lower table fixed 4 carrying a horizontal matrix of triangular cross section 5, and an upper table 6 movable vertically and carrying a punch folding 7 pushing part of the sheet 2 into the die 5.
  • the sheet metal guide includes a base plate 8 of which the extension is essentially vertical and which is mounted on the face front of the fixed lower table 4, for example using a pair of horizontal rails 9 provided on the front face of the fixed lower table 4 and along which said base plate 8 is guided and movable horizontally.
  • the sheet metal guide further comprises a support 10 sliding vertically and guided on one, and preferably two, rails vertical 11 provided on the base plate 8 penetrating into the grooves corresponding 12 in the grooves of two lateral vertical guides 13 secured to the rear face of the sliding support 10, as well as a vertical drive mechanism 14 for the sliding support 10.
  • This drive mechanism 14 is of the worm and nut type and presents a first servo-motor 15, the housing of which is integral with the base plate 8 and drives, for example through two pinions 16, 17, the vertical worm 18 of the drive mechanism 14, this vertical screw being held in bearings not shown integral with base plate 8 and meshes in the threads of a nut 19 secured to the rear face of the sliding support 10.
  • the first servo motor 15 rotates in one direction or the other
  • the vertical screw 18 rotates correspondingly and nut 19 and the sliding support 10 go up or down according to the direction of rotation of said worm 18.
  • the sheet metal guide also includes a pivot 20 which is mounted on the sliding support 10 and is susceptible to tilt or pivot the accompanying table 1 proper synchronism with the vertical movement of the sliding support 10 of such that the extension 21 of the upper support face of the accompanying table 1 passes substantially through the upper edge front 5a of the die 5 during a folding operation of the sheet 2.
  • the pivoting mechanism 20 comprises at least one, of preferably two, support arms 22 secured to the front face of the upper part of the sliding support 10.
  • each of them is integral with one or the other vertical edge of the sliding support 10 and goes forward from the front of the latter and perpendicularly to said front face.
  • a tree pivot 23 is housed in a bearing 24 of each support arm side 22 and carries a toothed wheel 25 at one of its free ends keyed onto said shaft 23 and meshing with a toothed wheel 26 integral in rotation of the output shaft of a second servo motor 27, the housing is mounted on the sliding support 10.
  • a pivoting arm 28 is keyed by its rear end to the pivot shaft 23 and carries, by its other end or front end, a rotation shaft 29 mounted in free rotation in a rolling bearing 30 provided in said front end of said rotation shaft 29.
  • a toothed wheel 31 called the first toothed wheel, with respect to which said shaft 23 can rotate freely thanks to a bearing for example of the ball bearing type 32 interposed between the shaft 23 and the hub of said first gear 31.
  • another first gear 31 is provided on the pivot shaft 23 between the other support arm and the pivot 28.
  • the first toothed wheel 31 is immobilized in rotation and preferably locked on the neighboring support arm 22. It may, as required, include one or two support arm 22, one or two first toothed wheels 31, one or two second toothed wheels 33 as well as the corresponding bearings 24, 30 and 32.
  • the front end of the pivot arm 28 comprises a rotation shaft 29 freely rotating in a bearing of the type ball bearing 30 mounted in a suitable housing at the end front of said pivot arm 28.
  • the rotation shaft 29 is provided with at least a second toothed wheel 33 keyed onto said shaft 29 in a position where it is aligned with a first corresponding toothed wheel 31.
  • the rotation shaft 29 is provided with a second toothed wheel of each side of the pivot arm.
  • a link arm 34 extending from preferably along a diametrical plane of the second toothed wheel 33 is fixed by bolts 35 on the latter and is integral with the table attendant 1.
  • the first toothed wheel 31 is connected to the second toothed wheel 33 by a toothed belt 36 of which the teeth engage without play in the space between two successive teeth first and second toothed wheels 31 and 33 aligned one on the other (see figure 1).
  • a toothed belt 36 of which the teeth engage without play in the space between two successive teeth first and second toothed wheels 31 and 33 aligned one on the other (see figure 1).
  • two notched belts 36 are also provided, a first gear 31 being aligned with the second gear corresponding.
  • the operating mode is as follows: during an operation of folding, the first servo motor 15 drives the sliding support 10 towards the top to a level where the support face of table 1 is at the height of the edge 5a of the matrix 5, said table being substantially horizontal.
  • the arm pivot 28 will pivot around the axis of the shaft 23 which it is joined and move the rotation shaft 29 and the second wheel upwards tooth 33 along an arc centered on the shaft 23.
  • the strands of the toothed belt 36 cannot move in the longitudinal direction.
  • the weight of the sheets to be supported by the accompanying table 1 is greater than a value of the order of 80 kg, it is preferable to use at least one and, preferably, two roller or bush chains or of any other suitable type 40 in combination with means of tension and damping 41 which apply or repel each roller, bush or similar transverse 42 of the chain 40 against the sidewall 31a of a corresponding tooth 31b of the first toothed wheel 31, of so that the upper strand 43 of the chain 40, 40a is always taut and its transverse rollers 42 applied against the sides 31a of the teeth 31b corresponding when said rollers 42 are housed in the spaces delimited by the sides of two neighboring teeth 31b.
  • the means of tension and repulsion 41 associated with a first chain 40a are arranged such that the upper strand 43 of said first chain 40a is stretched in the direction of arrow 44 towards the sliding support 10 and that the tension and repulsion means 41 associated with the second chain 40b which is parallel to the first (40a) are arranged in such a way so that the lower strand 45 of the second chain 40b is stretched in the direction of arrow 45 towards sliding support 10.
  • the rollers 42 of the lower strand 45 of the second chain 40b are applied against the other flank 31c of each of the teeth 31b of the toothed wheel 31 engaged with the second chain 40b.
  • the tensioning and repelling means 41 include, for each first immobilized toothed wheel 31, at least one recess oblong 47 extending in the circumferential direction and having in section a shape, for example rectangular, annular, etc., preferably several recesses 47a, 47b, 47c, 47d formed in the body of each first toothed wheel 31 and uniformly distributed around the cylindrical passage for the pivot shaft 23, a support stick 48 fixed in a transverse housing 49 of a support arm 22 and extending transversely and parallel to the pivot shaft 23 so as to penetrate through its free end into one of the oblong recesses 47a to 47d of the first toothed wheel 31 as well as a compression spring 50 arranged in the corresponding oblong recess (for example 47a) and interposed between an end face of the recess (for example 47a) and the stick 48 so as to bear, on the one hand, on one side end of this recess and, on the other hand, on the free end of the stick 48 housed in said ob
  • each of the recesses 47a to 47d receives a spring of compression 50 which, taken in the direction of arrow 51, is supported by a part, on the front end of the corresponding recess (47a to 47d) and, on the other hand, on the front side face of a corresponding stick 48 thus urging the rear end of the recess against the lateral face back of the stick in question.
  • the spring 50 urges the first toothed wheel 31 counterclockwise (see arrow 52, FIG. 2) so that the lower arm 45 of the chain 40, 40b is stressed in the same direction (see arrow 46) and in the direction of sliding support 10. This prevents jerky movement of the table 1, both in the ascending and descending directions thereof. It is also possible to arrange the recesses 47, 47a to 47d in each support arm 22, to fix the sticks 48 on each of the first toothed wheels 31 and to accommodate the free end of the sticks 48 and the compression springs 50 in the recesses 47, 47a to 47d of each support arm 22.
  • the sheet metal guide generally presents a relatively small width compared to the width of the press brake 3. As a result, two or more additional companions are needed. sheet when bending a large sheet to avoid its bending or lateral bending under the effect of the weight of the parts of sheet metal not supported.
  • the present invention provides a simple solution for remove additional attendants and replace them with an extension bracket removably mounted on the upper end of the accompanying table 1.
  • table 1 has a transverse recess 55 provided with a plate intermediate attachment 56 and, where appropriate, a fixed jaw 57 and two lateral jaws 58 sliding on the bottom 59 of the recess 55 at the need under the action of control cylinders 60.
  • the rear face of the recess 55 is delimited by a stop block 61 which can serve as fixed jaw when the two movable jaws 58 are biased towards the back of said table 1.
  • the extension support 62 has the general shape of an H and is consists of a crossbar 63 parallel to the front face 64 of the press brake 3 and two side bars 65 perpendicular to said face frontal 64.
  • the transverse length of the extension support 62 is, as can be seen in figure 7, sufficient to support the lateral ends of the sheet 2 and in any case slightly lower than the useful width of the press brake 3.
  • the crossbar 63 of the extension support 62 has, at its center, a cylindrical hole 66 for the passage of a fixing bolt 67, the threaded part of which passes through an oblong bore, not shown, of the intermediate plate 56 and is screwed into a nut (not shown) blocking against the underside of said plate 56.
  • the oblong hole has a main extension perpendicular to the front face 64 of press brake 3. This makes it possible to adapt the position of the bars transverse 63 having different widths.
  • the crossbar 63 of the extension support 62 can, if necessary, be clamped between the fixed jaw 57 and movable jaws 58.
  • the upper face of the extension support 62 i.e. the upper faces of the bar transverse 63 and lateral bars 64, as well as that of the jaw fixed 57 and that of the stop block 61, are provided with ball bearings 69 used to support the sheet to be folded 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP01403370A 2001-01-08 2001-12-27 Hebestütze für eine Blechbiegemaschine Expired - Lifetime EP1221348B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0100164 2001-01-08
FR0100164A FR2819202B1 (fr) 2001-01-08 2001-01-08 Accompagnateur de tole associe a une presse plieuse d'une tole

Publications (2)

Publication Number Publication Date
EP1221348A1 true EP1221348A1 (de) 2002-07-10
EP1221348B1 EP1221348B1 (de) 2006-03-01

Family

ID=8858576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01403370A Expired - Lifetime EP1221348B1 (de) 2001-01-08 2001-12-27 Hebestütze für eine Blechbiegemaschine

Country Status (5)

Country Link
US (1) US20030097868A1 (de)
EP (1) EP1221348B1 (de)
JP (1) JP2002248521A (de)
DE (1) DE60117510T2 (de)
FR (1) FR2819202B1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3056290A1 (de) * 2015-02-12 2016-08-17 Bogdan Kondracki Vorrichtung zur Automatisierung des Verfahrens zum Biegen von Werkstücken aus Metallblech für eine Biegepresse
CN107952838A (zh) * 2017-11-17 2018-04-24 昆山万马五金有限公司 一种金属加工防位移折弯装置
CN109158454A (zh) * 2018-11-03 2019-01-08 南京金球数控机床股份有限公司 一种高强度高稳定性折弯机
CN110077446A (zh) * 2019-05-20 2019-08-02 中国科学技术大学 一种可移动的智能消防指示装置
CN111421023A (zh) * 2020-03-16 2020-07-17 南京邮电大学 二自由度金属板材折弯随动托料装置及其运动学反解方法
CN111421024A (zh) * 2020-03-16 2020-07-17 南京邮电大学 基于复合驱动的随动托料装置及其运动学反解方法
EP3738688A1 (de) * 2019-05-15 2020-11-18 Nivora IP B.V. Vorrichtung zum abstützen eines bleches beim biegen in einer abkantpresse
CN117483495A (zh) * 2023-12-29 2024-02-02 苏州兴齐钢结构工程有限公司 一种钢材折弯装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6148883B2 (ja) * 2013-03-14 2017-06-14 株式会社アマダホールディングス プレスブレーキ
KR101473733B1 (ko) 2013-11-08 2014-12-18 국방과학연구소 탑포일 절곡기
CN106077334B (zh) * 2016-06-16 2018-03-02 安徽省恒胜机电工程股份有限公司 一种电梯门板自动折弯装置
CN108465717B (zh) * 2018-05-15 2024-11-29 广东蓝昊智能科技有限公司 一种全自动钣金折弯机
JP7332366B2 (ja) * 2019-07-09 2023-08-23 コマツ産機株式会社 曲げ機械用の追従装置
JP7365921B2 (ja) * 2020-01-28 2023-10-20 コマツ産機株式会社 曲げ機械用の追従装置
JP7365920B2 (ja) * 2020-01-28 2023-10-20 コマツ産機株式会社 曲げ機械用の追従装置
CN113263485A (zh) * 2021-06-15 2021-08-17 南京巴兰登家具有限公司 一种木板加工定位夹紧装置
CN120190244B (zh) * 2025-05-27 2025-08-01 苏州工学院 一种用于金属板材的无痕折弯模具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59113932A (ja) * 1982-12-20 1984-06-30 Mitsubishi Electric Corp プレスブレ−キの材料支持装置
JPS59141323A (ja) * 1983-01-31 1984-08-14 Mitsubishi Electric Corp プレスブレ−キの材料支持装置
JPS59147716A (ja) * 1983-02-15 1984-08-24 Mitsubishi Electric Corp プレスブレ−キの材料支持装置
DE4126906A1 (de) * 1991-08-14 1993-02-18 Walter Kaercher Abkantpresse mit einer stuetzvorrichtung fuer das zu bearbeitende werkstueck
EP0542610A1 (de) * 1991-11-13 1993-05-19 Amada S.A. Hebestütze für eine Blechbiegemaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59113932A (ja) * 1982-12-20 1984-06-30 Mitsubishi Electric Corp プレスブレ−キの材料支持装置
JPS59141323A (ja) * 1983-01-31 1984-08-14 Mitsubishi Electric Corp プレスブレ−キの材料支持装置
JPS59147716A (ja) * 1983-02-15 1984-08-24 Mitsubishi Electric Corp プレスブレ−キの材料支持装置
DE4126906A1 (de) * 1991-08-14 1993-02-18 Walter Kaercher Abkantpresse mit einer stuetzvorrichtung fuer das zu bearbeitende werkstueck
EP0542610A1 (de) * 1991-11-13 1993-05-19 Amada S.A. Hebestütze für eine Blechbiegemaschine

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 234 (M - 334) 26 October 1984 (1984-10-26) *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 270 (M - 344) 11 December 1984 (1984-12-11) *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 276 (M - 346) 18 December 1984 (1984-12-18) *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3056290A1 (de) * 2015-02-12 2016-08-17 Bogdan Kondracki Vorrichtung zur Automatisierung des Verfahrens zum Biegen von Werkstücken aus Metallblech für eine Biegepresse
CN107952838A (zh) * 2017-11-17 2018-04-24 昆山万马五金有限公司 一种金属加工防位移折弯装置
CN107952838B (zh) * 2017-11-17 2023-10-17 昆山万马五金有限公司 一种金属加工防位移折弯装置
CN109158454A (zh) * 2018-11-03 2019-01-08 南京金球数控机床股份有限公司 一种高强度高稳定性折弯机
EP3738688A1 (de) * 2019-05-15 2020-11-18 Nivora IP B.V. Vorrichtung zum abstützen eines bleches beim biegen in einer abkantpresse
CN110077446A (zh) * 2019-05-20 2019-08-02 中国科学技术大学 一种可移动的智能消防指示装置
CN110077446B (zh) * 2019-05-20 2024-03-29 中国科学技术大学 一种可移动的智能消防指示装置
CN111421023A (zh) * 2020-03-16 2020-07-17 南京邮电大学 二自由度金属板材折弯随动托料装置及其运动学反解方法
CN111421024A (zh) * 2020-03-16 2020-07-17 南京邮电大学 基于复合驱动的随动托料装置及其运动学反解方法
CN111421024B (zh) * 2020-03-16 2021-08-10 南京邮电大学 基于复合驱动的随动托料装置及其运动学反解方法
CN117483495A (zh) * 2023-12-29 2024-02-02 苏州兴齐钢结构工程有限公司 一种钢材折弯装置
CN117483495B (zh) * 2023-12-29 2024-04-19 苏州兴齐钢结构工程有限公司 一种钢材折弯装置

Also Published As

Publication number Publication date
JP2002248521A (ja) 2002-09-03
FR2819202A1 (fr) 2002-07-12
US20030097868A1 (en) 2003-05-29
EP1221348B1 (de) 2006-03-01
FR2819202B1 (fr) 2003-04-18
DE60117510D1 (de) 2006-04-27
DE60117510T2 (de) 2006-11-09

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