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EP1232811B1 - Hebestütze für eine Blechbiegemaschine - Google Patents

Hebestütze für eine Blechbiegemaschine Download PDF

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Publication number
EP1232811B1
EP1232811B1 EP02290095A EP02290095A EP1232811B1 EP 1232811 B1 EP1232811 B1 EP 1232811B1 EP 02290095 A EP02290095 A EP 02290095A EP 02290095 A EP02290095 A EP 02290095A EP 1232811 B1 EP1232811 B1 EP 1232811B1
Authority
EP
European Patent Office
Prior art keywords
follower
support structure
sheet metal
vertical
horizontal
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.)
Expired - Lifetime
Application number
EP02290095A
Other languages
English (en)
French (fr)
Other versions
EP1232811A1 (de
Inventor
Eric Gascoin
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 EP1232811A1 publication Critical patent/EP1232811A1/de
Application granted granted Critical
Publication of EP1232811B1 publication Critical patent/EP1232811B1/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 present invention relates to a sheet metal follower for a press brake having a lower stationary table carrying on its upper face a folding die, an attendant of the type comprising an accompanying table pivotable by its front end about a horizontal axis of pivoting, a lateral transfer trolley mounted on the front wall of the lower fixed table so as to be able to move horizontally along this front wall, a vertical support wall secured to the transfer carriage and provided with vertical slides and at least one vertical ball screw capable of being rotated from its lower end, a support structure having a vertical face plate and two lateral vertical plates extending in a direction opposite to the lower press table, vertical guide rails integral with the front plate of the support structure and each cooperating with a corresponding slide of the support wall of the carriage, and a drive mechanism for vertically moving the front plate of the support structure, an accompanying table hinged to the support structure about a horizontal axis parallel to the folding die, and means carried by said support structure capable of rotating said accompanying table about its axis.
  • the present invention aims to eliminate or at least mitigate the disadvantages associated with the prior art and to provide a sheet attendant of the type mentioned above which allows a quick and accurate positioning, and in which the axis of articulation of the accompanying table is very close to the folding die.
  • each of the vertical side plates of the support structure are provided a pair of bearings spaced from each other and whose horizontal axes are aligned with each other and perpendicular to the vertical faceplate of said structure, two depth adjustment columns, each of which is slidably housed in a corresponding pair of bearings, a transverse vertical arm rigidly connecting the front ends of the two adjustment columns, and secured to the upper face raised relative to the upper end of the lateral plates of the support structure, support fingers whose front ends each comprise a bearing for the horizontal axis of pivoting of the accompanying table which, by its central and rear parts, covers the support structure and the organs which are integral therewith, a rectilinear guide member provided in the central part of the accompanying table below the upper plane wall thereof and extending in the vertical median plane of the table perpendicular to the axis of pivoting thereof, a hinge clevis slidable on the rectilinear guide member and carrying a horizontal axis parallel to
  • the sheet metal attendant therefore comprises a companion table which is associated with means enabling it to execute three rectilinear movements perpendicular to each other and a pivoting movement about its front axis parallel to the extent the largest of the folding die, these means comprising a horizontal transfer means parallel to the front wall of the fixed lower table of the press brake and the largest extent of the folding die, a vertical displacement means carried by the transfer means, and secured to a supporting structure of the accompanying table, a means of horizontal displacement of the accompanying table relative to its support structure and perpendicular to the pivot axis of said accompanying table as well as means for pivoting said table about its pivot axis, said pivoting means being variable in length between its articulation on the support structure and its articulation on the accompanying table, the latter articulation being slidable along the accompanying table in a direction perpendicular to the pivot axis of said table.
  • the sheet attendant 1 is mounted on a vertical front wall 2 of a lower table 3 of a non-press brake shown in more detail.
  • the lower table 3 carries a folding matrix 4 whose upwardly open groove is parallel to the front wall 2.
  • the accompanying sheet metal 1 has at its upper end, an accompanying table 5 capable of moving rectilinearly along the axes x, Y, z and pivot about an axis 6 which is horizontal and parallel to the vertical wall 2 and to the folding matrix 4, and which is provided at the front end 7 of the accompanying table 5, this front end 7 being close to said folding die 4.
  • an accompanying table 5 capable of moving rectilinearly along the axes x, Y, z and pivot about an axis 6 which is horizontal and parallel to the vertical wall 2 and to the folding matrix 4, and which is provided at the front end 7 of the accompanying table 5, this front end 7 being close to said folding die 4.
  • the accompanying table 5 is therefore associated with means 8, 9, 10 and 11 enabling it to execute the three rectilinear movements perpendicular to each other in the directions x, Y, z and a pivoting around the horizontal axis 6 cooperating with the front end 7 of said companion table 5.
  • the first (8) of these means 8, 9, 10 and 11 is a horizontal and parallel transfer means to the vertical wall 2 of the lower table 3 of the press brake and to the folding die 4.
  • This first means 8 comprises a transfer trolley 12 mounted on the front wall 2 so as to be able to move horizontally along this wall 2.
  • This first means 8 also comprises a guide 13 whose vertical section has the shape of a lying u whose bottom 13a is integral with the front vertical wall 2 of the table 3 and whose lateral branches 13b, 13c comprise either a guide column 14 (see upper branch 13b) or a guide groove 15 (see lower branch 13c of the section in FIG. shape of a lying u).
  • the transfer carriage 12 comprises two lateral transfer bearings 16a, 16b, for example with ball bearings, each of which surrounds the guide column 14 with the exception of the rectilinear fixing zone 17, for example by welding, of this column 14. on the rib of the upper branch 13b of the guide 13.
  • the transfer carriage 12 has, in addition, a guide rib 18 which engages in the groove 15 of the lower branch 13c of the guide 13.
  • the bearings 16a, 16b and the guide rib 18 are integral with a vertical support wall 20 which is an integral part of the lateral transfer carriage 12.
  • the second means is a vertical displacement means 9 which comprises at least two vertical slides 21, 22 secured to the vertical support wall 20 of the transfer carriage 12 and provided on the opposite side to the lateral transfer bearings 16a, 16b and the less a vertical ball screw 23 which is for example arranged along the vertical median plane of the vertical support wall and midway of the vertical slideways 21, 22.
  • This vertical screw 23 is integral with the support wall 20 in axial displacement. but is rotatable relative to the latter and cooperates, at its lower end with a not shown rotary motor whose housing is fixed on the lower edge of said support wall 20.
  • the vertical displacement means 9 further comprises a support structure 25 having a vertical front plate 25a whose face facing the support wall 20 of the carriage 12 has two vertical guide rails 26, 27 of T-section s'. each engaging in a corresponding vertical slide 21, 22 whose groove also has a T-section for retaining in vertical position said rail 26, 27 and said front plate 25a.
  • a ball nut 19 cooperating with the vertical ball screw 23 is also part of the displacement means 9, said nut being immobile in rotation and secured to the lower part of the support structure 25 and in particular the front plate 25a thereof. this.
  • the support structure 25 also comprises two lateral vertical plates 25b, 25c parallel to each other and perpendicular to the vertical support wall 20 and to the vertical front plate 25a to which they are rigidly fixed. It will also be noted that the upper part of the side plates 25b, 25c protrude upwardly from the upper edge of the front plate 25a and is slightly recessed therefrom in order to free up space for an element of the third moving means. rectilinear which will be discussed later.
  • the third means of rectilinear displacement of the accompanying table 5 is a moving means 10 allowing it to make a horizontal movement relative to the support structure 25 and perpendicular to the vertical plane of the front plate 25a thereof.
  • This horizontal displacement means 10 comprises, at the upper part and on the outer face of each vertical plate 25b, 25c of the support structure 25, a pair 28, 29 of bearings whose bearings 28a, 28b; 29a, 29b are of identical inner diameters and spaced from each other and whose horizontal axes are aligned with one another and perpendicular to the vertical plane of the front plate 25a of said structure 25.
  • This means 10 present , in addition, for each of the two pairs of bearings 28, 29, a depth adjustment column 30a, 30b slidably housed in a corresponding pair of bearings 28 or 29 and a transverse arm 31 rigidly connecting the front ends of the two adjustment columns 30a, 30b, this arm 31 being disposed above the front plate 25a and in front of the vertical end edges of the recessed portion of the side plates 25b and 25c. Also part of the horizontal displacement means 10, two lateral support fingers 32a, 32b fixed by their rear ends on the upper face 31a of the transverse arm 31, the upper face 31a of the latter being raised relative to the upper edges of the side plates 25b, 25c.
  • each support pin 32a, 32b comprises a bearing 33a, 33b each receiving an end portion of the pivot axis 6 secured to the front end of the accompanying table 5 by two fixing blocks 35a and 35b traversed without play by the pivot axis 6 and fixed, on the one hand, on the front end of said table 5 and, on the other hand, on the axis 6 by locking screws 36.
  • the accompanying table 5 comprises a flat top plate 5a bordered on its periphery, preferably of rectangular shape, by side plates 5b, front 5c and rear 5d together forming a kind of skirt of low height.
  • a flat top plate 5a bordered on its periphery, preferably of rectangular shape, by side plates 5b, front 5c and rear 5d together forming a kind of skirt of low height.
  • Below the upper plate 5a, and in particular in its longitudinal zone and mid-distance plates 5b are provided several holding magnets 37a, 37b for a bending sheet 34 one of which (37a) is located near the hinge axis 6 and the other (37b) to the rear portion of the accompanying table 5.
  • the accompanying table acts on the depth adjustment columns 30a, 30b, either manually or with the aid of a drive mechanism, such as a not shown rack drive, the rack itself which can be incorporated in a portion of each column 30a, 30b.
  • a drive mechanism such as a not shown rack drive
  • said table 5 is locked in this position by immobilizing the columns 30a, 30b with respect to the support structure 25.
  • the pivoting means 11 of the accompanying table 5 comprises a hinge member 38 slidable along a guide rod 39 provided in the central part and under the upper plate 5a of the table 5 and more precisely said, in the vertical median plane perpendicular to this upper plate 5a and to the pivot axis 6, this guide rod 39 extending rearwardly from the transverse arm 31 over at least one third of the length of the table 5 and being fixed at its ends in housing blocks 40a, 40b secured to said table 5.
  • the hinge member 38 comprises, on the one hand, a hinge yoke 38a mounted astride the guide rod 39 which constitutes a rectilinear guiding member for said yoke 38a, and, on the other hand, a piece connecting link 38b partially engaging in the yoke 38a and connected thereto by a horizontal axis 38c so as to be pivotable relative to said yoke 38a without hindering the sliding thereof on the guide rod 39.
  • the pivoting means 11 also comprises an endless ball screw 40 which cooperates with a ball nut 41 mounted to pivot on the upper part of the support structure 25 between the side plates 25b, 25c thereof, so as to able to pivot about a horizontal axis parallel to the axis 38c of the yoke 38a and to the pivot axis 6 of the accompanying table 5.
  • the upper end of the worm 40 is secured to the connecting piece 38b which thus constitutes a screw head.
  • the pivoting means 11 is of variable active length between its fixed hinge on the support structure 25 and its movable articulation (articulation member 38) on the accompanying table 5, this movable articulation being capable of sliding along the table 5 in a direction perpendicular to the pivot axis 6 of said table 5 .
  • the ball nut 41 is partially housed in a pivoting cage 42 fixed on either side on one of the two side plates 25b, 25c of the support structure by means of two partially threaded horizontal joint bolts 43 , 44 which are aligned with each other and have a smooth portion through the wall of the cage 42 and constituting the horizontal axis of pivoting of the ball nut 41.
  • the structure of a ball nut and d Since an endless ball screw is widely known, it does not seem necessary to describe it here in detail.
  • part of the cylindrical periphery of the nut 41 cooperates with a rolling bearing 45 disposed in the pivoting cage 42 and that the enlarged upper end of the nut 41 is integral with a drive pulley 46 traversed with lateral clearance by the worm 40, this drive pulley 46 being connected by an endless belt 47 for example notched with a pulley 48 integral with the shaft of a drive motor 49 whose housing is fixed on the pivoting cage 42.
  • the embodiment described above is given only as an example and can undergo a number of modifications without going beyond the protective framework, such as defined by the appended claims.
  • the yoke 38a of the articulation member 38 instead of being mounted astride the guide rod 39 (see figure 1 ), could as well constitute the head of the worm 40, so that the connecting piece 38b should be shaped to slide on the rod 39 while partially engaging in the yoke 38a (see figure 2 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Machine Tool Units (AREA)

Claims (9)

  1. Blechbegleiter für Abkantpresse, der einen stationären unteren Tisch (3) aufweist, der auf seiner oberen Seite ein Faltgesenk (4) trägt, Begleiter des Typs, der aufweist:
    - einen Begleittisch (5), der über sein vorderes Ende um eine horizontale Schwenkachse (6) schwenken kann,
    - ein Mittel (8) zum seitlichen Transfer, das auf eine senkrechte Vorderwand (2) des unteren Tischs (3) so montiert ist, daß es sich horizontal entlang dieser Vorderwand (2) bewegen kann,
    ein Mittel (9) zum vertikalen Transfer, das von dem Mittel (8) zum seitlichen Transfer getragen wird, senkrecht zu diesem Letzteren beweglich und fest mit einer Tragstruktur (25) des Begleittischs (5) und seiner horizontalen Schwenkachse (6) verbunden ist, sowie
    - ein Mittel (11) zum Schwenken des Begleittischs (5) um seine Schwenkachse (6),
    dadurch gekennzeichnet,
    - daß er ein Mittel (10) zum horizontalen Bewegen aufweist, das den Begleittisch (5) horizontal zu der Tragstruktur (25) dieses und senkrecht zu der Schwenkachse (6) bewegen kann,
    - daß die aktive Länge des Mittels (11) zum Schwenken zwischen seiner stationären Anlenkung (43, 44) auf der Tragstruktur (25) und seiner beweglichen Anlenkung (38) auf dem Begleittisch (5) variabel ist, und
    - daß die bewegliche Anlenkung (38) entlang des Tischs (5) entlang einer Richtung senkrecht zu der Schwenkachse (6) dieses Tischs (5) gleiten kann.
  2. Blechbegleiter nach Anspruch 1, dadurch gekennzeichnet, daß das Mittel zum horizontalen Bewegen (10) des Begleittischs (5) aufweist:
    - am oberen Ende und an der äußeren Seite jeder der Seitenplatten (25b, 25c) der Tragstruktur (25) ein Paar Lager (28, 29), deren Lager (28a, 28b; 29a, 29b) voneinander beabstandet und eines auf dem anderen gemäß einer horizontalen Achse senkrecht zu der senkrechten Vorderplatte (25a) der Tragstruktur ausgerichtet sind,
    - zwei Tiefeneinstellsäulen (30a, 30b), von welchen jede gleitend in einem entsprechenden Paar von Lagern (28, 29) aufgenommen ist,
    - einen senkrechten Querarm (31), der die vorderen Enden der beiden Einstellsäulen (30a, 30b) starr verbindet, und
    - seitliche Tragfinger (32a, 32b), die an ihren hinteren Enden auf der oberen Seite (31 a) des Querarms (31) befestigt sind und an ihren vorderen Enden jeweils ein Lager (33a, 33b), das ein entsprechendes Ende der Schwenkachse (6) des Begleittischs (5) aufnimmt, aufweisen.
  3. Blechbegleiter nach Anspruch 1, dadurch gekennzeichnet,
    daß der obere Teil der Seitenplatten (25b, 25c) der Tragstruktur (25) zu dem oberen Rand der Vorderplatte (25a) dieser Letzteren vorsteht und in Bezug auf den Rand einen leichten Rücksprung aufweist und
    daß der Querarm (31) über der Vorderplatte (25a) und vor den senkrechten Vorderrändern des Teils der Seitenplatten (25b, 25d) der Tragstruktur (25) mit besagtem Rücksprung angeordnet ist.
  4. Blechbegleiter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das vordere Ende des Begleittischs (5) mit seiner Schwenkachse (6) durch zwei Befestigungsblöcke (35a, 35b), die ohne Spiel von der Achse (6) durchquert werden und einerseits auf dem vorderen Ende des Tischs (5) und andererseits auf der Achse (6) durch Blockierschrauben (36) befestigt sind, fest verbunden ist.
  5. Blechbegleiter nach einem der Ansprüche 1, 2 und 4, dadurch gekennzeichnet, daß der Begleittisch (5) die Tragstruktur (25) und die fest mit ihm verbundenen Organe abdeckt und daß er eine ebene obere Platte (5a) aufweist, die auf ihrem rechteckigen Umfang von Seitenplatten (5b), Vorderplatte (5c) und Rückplatte (5d) umrandet ist, die gemeinsam eine Art Schürze mit geringer Höhe bilden.
  6. Blechbegleiter nach einem der Ansprüche 1, 2, 4 und 5, dadurch gekennzeichnet, daß der Begleittisch (5) in seiner horizontalen Position mit seiner ebenen oberen Platte (5a) auf den Tragfingern (32a, 32b) aufliegt und gegen jedes Kippen nach hinten von der Schwenkachse (6), die in den Lagern (33a, 33b) der Finger (32a, 32b) aufgenommen ist, zurückgehalten wird.
  7. Blechbegleiter nach Anspruch 1, dadurch gekennzeichnet, daß die bewegliche Anlenkung (38) des Mittels (11) zum Schwenken einerseits eine Anlenkgabel (38a), die rittlings auf einem Führungsschaft (39) montiert ist, der in dem zentralen Teil und unter der oberen Platte (5a) des Begleittischs (5) vorgesehen ist, und andererseits ein Verbindungsteil (38b) aufweist, das sich teilweise in die Gabel (38a) fügt und mit dieser durch eine horizontale Achse (38c) so verbunden ist, daß es in Bezug auf die Gabel (38a) schwenken kann, ohne deren Gleiten auf dem Führungsschaft (39) zu behindern.
  8. Begleitblech nach einem der Ansprüche 1 und 7, dadurch gekennzeichnet, daß das Mittel (11) zum Schwenken ferner eine Kugelumlaufspindel (40) aufweist, die an ihrem oberen Ende fest mit dem Verbindungsteil (38b) oder der Gabel (38a) der beweglichen Anlenkung (38) verbunden ist, wobei eine Kugelmutter (41) mit der Spindel (40) zusammenwirkt und an stationärer Stelle aber auf dem oberen Teil der Tragstruktur (25) so schwenkend montiert ist, daß sie um eine horizontale Achse (43, 44) parallel zu der Achse (38c) der beweglichen Anlenkung (38) schwenken kann, und einen Antriebsmotor (49), dessen Ausgangswelle eine Scheibe (48) trägt, die durch einen Endlosriemen (47) mit einer Scheibe (46) verbunden ist, die mit der Mutter (41) fest verbunden ist und mit Spiel von der Kugelumlaufspindel (40) durchquert wird.
  9. Blechbegleiter nach Anspruch 8, dadurch gekennzeichnet, daß die Kugelmutter (41) in einem Schwenkkäfig (42) mittels eines Wälzlager (45) montiert ist, daß der Käfig (42) auf den Seitenplatten (25b und 25c) der Tragstruktur (25) mittels Anlenkbolzen (43, 44) angelenkt ist, und daß der Antriebsmotor (49) ebenfalls auf dem Käfig (42) befestigt ist.
EP02290095A 2001-01-17 2002-01-15 Hebestütze für eine Blechbiegemaschine Expired - Lifetime EP1232811B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0100583A FR2819436B1 (fr) 2001-01-17 2001-01-17 Accompagnateur de toles pour presse plieuse
FR0100583 2001-01-17

Publications (2)

Publication Number Publication Date
EP1232811A1 EP1232811A1 (de) 2002-08-21
EP1232811B1 true EP1232811B1 (de) 2008-03-05

Family

ID=8858908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290095A Expired - Lifetime EP1232811B1 (de) 2001-01-17 2002-01-15 Hebestütze für eine Blechbiegemaschine

Country Status (5)

Country Link
US (1) US6634204B2 (de)
EP (1) EP1232811B1 (de)
JP (1) JP2002263736A (de)
DE (1) DE60225365T2 (de)
FR (1) FR2819436B1 (de)

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US7092246B2 (en) * 2003-11-18 2006-08-15 Kabushiki Kaisha Toshiba Apparatus for connecting a display to a body case of an electronic device
NL1027529C2 (nl) * 2004-11-17 2006-05-18 Safan Bv Pers.
CN102228918B (zh) * 2011-06-17 2013-05-29 无锡金球机械有限公司 随动跟踪托料装置
JP2013103239A (ja) * 2011-11-11 2013-05-30 Miraikikai Inc 曲げ加工装置及び曲げ加工方法
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
AT515296B1 (de) * 2014-03-19 2015-08-15 Trumpf Maschinen Austria Gmbh Biegehilfe für eine Abkantpresse
CN105170819A (zh) * 2015-09-28 2015-12-23 扬中中科维康智能科技有限公司 一种基于并联机构的大型数控板料折弯机随动托料系统
CN107597904B (zh) * 2017-09-27 2019-01-15 郑州工程技术学院 计算机散热器生产加工设备
CN108856382A (zh) * 2018-08-22 2018-11-23 大连小松雄连机械制造有限公司 随动托料装置、上动式折弯机及板料的折弯方法
JP7441054B2 (ja) * 2019-07-09 2024-02-29 コマツ産機株式会社 曲げ機械用の追従装置
CN111167891A (zh) * 2020-03-02 2020-05-19 爱克(苏州)机械有限公司 一种数控折弯机四连杆结构随动托料机构
CN111545636B (zh) * 2020-05-13 2022-04-19 广东习创实业发展有限公司 一种钢材热轧制造成型自动化加工设备
CN111545635B (zh) * 2020-05-13 2022-05-20 山东华舜重工集团有限公司 一种钢材折弯成型加工工艺
CN112296142B (zh) * 2020-09-19 2022-08-23 深圳市奥斯玛数控发展有限公司 一种板材用上传动折弯机
CN112845691A (zh) * 2020-12-23 2021-05-28 天水锻压机床(集团)有限公司 重型板材高效加工成形单元智能控制系统及方法
CN114226577A (zh) * 2021-11-30 2022-03-25 黄石华信机械设备有限公司 一种可升降、伸缩、旋转滑动折弯机前托料装置
CN116274516A (zh) * 2023-02-27 2023-06-23 青岛大东自动化科技有限公司 一种随动托料、托料使用方法及折弯机

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JP2534205B2 (ja) * 1987-07-24 1996-09-11 ヤマザキマザック株式会社 プレスブレ−キ用追従装置
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Also Published As

Publication number Publication date
DE60225365D1 (de) 2008-04-17
FR2819436B1 (fr) 2003-04-18
DE60225365T2 (de) 2009-03-19
FR2819436A1 (fr) 2002-07-19
EP1232811A1 (de) 2002-08-21
US6634204B2 (en) 2003-10-21
JP2002263736A (ja) 2002-09-17
US20020092337A1 (en) 2002-07-18

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