EP3475007B1 - Adjustable mould - Google Patents

Adjustable mould Download PDF

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Publication number
EP3475007B1
EP3475007B1 EP17740103.1A EP17740103A EP3475007B1 EP 3475007 B1 EP3475007 B1 EP 3475007B1 EP 17740103 A EP17740103 A EP 17740103A EP 3475007 B1 EP3475007 B1 EP 3475007B1
Authority
EP
European Patent Office
Prior art keywords
adjusting
mould
wall
slats
elements
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.)
Active
Application number
EP17740103.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3475007A1 (en
Inventor
Carlo VANGOMPEL
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.)
VLM
Original Assignee
VLM
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Filing date
Publication date
Application filed by VLM filed Critical VLM
Publication of EP3475007A1 publication Critical patent/EP3475007A1/en
Application granted granted Critical
Publication of EP3475007B1 publication Critical patent/EP3475007B1/en
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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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/02—Die constructions enabling assembly of the die parts in different ways
    • 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
    • B21D5/0209—Tools therefor
    • B21D5/0227—Length adjustment of the 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles

Definitions

  • the present invention relates to a device for bending material according to the preamble of the first claim.
  • the device described herein comprises a mould and a holder for supporting the mould, the mould comprising a first and a second mould half.
  • the first and second mould halves each extend in a longitudinal direction of the holder and together enclose a mould cavity extending in the longitudinal direction.
  • the first mould half comprises a set of parallel first elements each comprising a first extension and an outer wall.
  • the second mould half comprises a set of parallel second elements each comprising a second extension and an outer wall.
  • the first and second elements extend in a transverse direction and are arranged alternatingly in the longitudinal direction of the mould.
  • the first elements are arranged at a first distance from each other to receive said second extension of the second elements between them.
  • the second elements are arranged at a second distance from each other to receive said first extension of the first elements between them.
  • Said outer walls of the first elements of the first mould half together form the first outer wall of the first mould half, and said outer walls of the second elements of the second mould half together form the second outer wall of the second mould half.
  • the first and the second mould halve in said transverse direction are arranged moveably on the holder such that they can be shifted relative to each other to adjust the width of the mould cavity.
  • the device further comprises adjusting means for adjusting the width of the mould cavity.
  • the adjusting means known from EP-A-1513628 are adjusting blocks which are manually placed on the holder. When bending material with the aid of the mould, a force is exerted on each of the mould halves that pushes the mould halves away from each other.
  • the adjusting blocks serve as a stop for the first and second elements to prevent the mould halves from moving away from each other. Placing these adjusting blocks is a manual operation and time consuming. Furthermore, the desired width of the mould cavity is also limited to the number of adjusting blocks available.
  • the adjusting means comprise a plurality of adjusting slats, wherein the adjusting slats are positioned movable in the longitudinal direction or in the height direction on the holder at the level of the outer walls of at least one of the mould halves.
  • the adjusting slats are carried out such that by moving a number of the adjusting slats, which are adjacent to each other, each time, one of the adjusting slats forms a stop for the corresponding outer walls of the corresponding mould half.
  • the adjusting means further comprise gripping means for gripping and moving a number of the adjusting slats. Consequently, by moving a different number of the adjusting slats by means of the gripping means, the stop position can be changed.
  • the device according to the invention has the advantage that one adjusting slat each time serves as a stop for the first elements and the second elements, respectively.
  • the gripping means which can move a number of the adjusting slats, the stop of the first mould half and/or the stop of the second mould half can be adjusted in order to adjust the width of the mould cavity in a less time-consuming manner.
  • the gripping means are provided for moving the adjusting slats in a height direction
  • the stop position is changed by moving a number of adjacent adjusting slats in a height direction. Since the width of the mould cavity is proportional to the distance between the first outer wall and the second outer wall, it is thus possible to adjust the width of the mould cavity.
  • the gripping means are, for example, hydraulically driven lifting means, provided for lifting a variable number of adjusting slats.
  • the adjusting slats have recesses provided for receiving the corresponding outer wall and the gripping means are provided for moving the adjustment slats in the longitudinal direction.
  • the stop position is changed by moving a number of adjacent adjusting slats in longitudinal direction. By shifting a number of the adjusting slats in the longitudinal direction, it is possible to align the recesses of said number of the adjusting slats with the corresponding outer wall of the corresponding mould half. After that, the corresponding mould half can move in said transverse direction until the corresponding outer wall touches an adjusting slat that has not been moving in the longitudinal direction, and which then forms the stop for the corresponding mould half.
  • the corresponding mould half is moved in the transverse direction, after which a number of the adjusting slats are moved in the longitudinal direction to form a new stop. Since the width of the mould cavity is proportional to the distance between the first outer wall and the second outer wall, it is thus possible to change the width of the mould cavity.
  • the gripping means are, for example, pneumatic or electrically driven gripping means which are provided for gripping a variable number of the adjusting slats and moving them in longitudinal direction.
  • the holder is provided with a first and a second wall in the longitudinal direction, which respectively serve as stop for the first and the second outer wall of the corresponding mould half, if none of the adjusting slats serve as stop for the corresponding outer wall.
  • the distance between the first and second wall of the holder thus determines the maximum width of the mould cavity.
  • these outer walls can be provided for absorbing the compressive forces exerted by the mould elements on the adjusting slats during use.
  • the adjusting slats are divided into two sets wherein the first set serves as stop for the first outer wall and the second set serves as stop for the second outer wall. In this further embodiment, it is possible to move each of both mould halves separately.
  • the adjusting slats in said first and second set touch and an adjusting slat of the first set touches said first wall and an adjusting slat of the second set touches said second wall.
  • the device is carried out such that the adjusting slats of a corresponding set between the adjusting slat which serves as stop for the corresponding outer wall and the adjusting slat which touches the corresponding wall form a whole, i.e., that the intermediate slats between the slat which forms the stop and the wall of the holder, move along together with the rest.
  • This has the advantage that the pressure exerted by the mould halves on the stop, when the mould is used to bend material, is transferred to the holder by means of the whole of slats.
  • the first mould half is not moveable relative to said holder and the first outer wall always touches said first wall.
  • the first mould half can thus be fixedly mounted on the holder and only the second mould half is moveable in said transverse direction.
  • only adjusting slats are provided to determine the stop of the second mould half.
  • the device is carried out such that that the adjusting slats touch, and that an adjusting slat touches said second wall, whereby the adjusting slats between the adjusting slat which serves as stop for the second outer wall, and the adjusting slat which touches the second wall, form a whole.
  • the pressure exerted by the second mould half on the stop when the mould is used to bend material, is therefore transferred to the holder by means of the set of slats.
  • the holder is a block provided with at least one recess in the longitudinal direction, wherein the adjusting slats are received.
  • the at least one recess ensures it is possible to move the adjusting slats in such a way that they do not form a stop for a corresponding mould half. It is thus possible to move the mould halves up to the walls of the holder to have the widest possible mould cavity opening.
  • the device further comprises displacement means for moving the first mould half relative to the second mould half, the displacement means, in particular, being integrated into the holder and engaging a cavity provided in at least one of the mould halves.
  • the first and the second mould half respectively comprise a first and a second axis, which are oriented in the longitudinal direction and which are configured to attach said first and second mould elements to.
  • the mould is thus adjustable in length by mounting more or less mould elements to said first and second axis.
  • This second object is achieved by means of a system which comprises at least two devices according to any one of the preceding embodiments and which comprises first connecting means to each time interconnect the mould halves of the at least two devices, and comprises second connecting means, to interconnect, each time, the adjusting slats of the at least two devices.
  • the system comprises multiple devices which can be interconnected by means of said first and second connecting means, the system allows to bend material that is longer than an individual device.
  • system further comprises third connecting means to connect the first axis of the first device with the first axis of the second device, and to connect the second axis of the first device with the second axis of the second device.
  • third connecting means to connect the first axis of the first device with the first axis of the second device, and to connect the second axis of the first device with the second axis of the second device.
  • the corresponding axes of at least two devices are interconnected by means of said third connecting means. In this way, it is certain that the corresponding mould halves of the devices are aligned and the material is thus bent in a correct way.
  • Figures 1-3 illustrate schematically the operation of a first embodiment of the device according to the invention, wherein the adjusting slats are moved in height direction to adjust the width of the mould opening.
  • Figures 1 and 2 show a portion of the holder 3 and the adjusting slats 20 arranged thereon, located in a recess 28 and against an inner wall 30 of the holder, in two different situations.
  • Figure 3 shows a cross section of the situation of Figure 2 .
  • none of the adjusting slats 20 have been moved, and the corresponding mould half can move over the upper surface 27 of the holder and over the adjusting slats, up till against the inner wall 30 of the holder 3.
  • the inner wall 30 of the holder 3 forms in this situation the stop for the outer wall of the mould half.
  • a number of the adjusting slats 20 have been moved in height direction and the stop position for the outer wall of the mould half has been moved inward.
  • Figures 4-6 illustrate schematically the operation of a second embodiment of the device according to the invention, wherein the adjusting slats are provided with recesses 25 and are moved in longitudinal direction to adjust the width of the mould opening.
  • Figures 4 and 5 show a portion of the holder 3 and the adjusting slats 20 arranged thereon, located in a recess 28 and against an inner wall 30 of the holder, in two different situations.
  • Figure 6 shows a cross section of the situation of Figure 5 .
  • none of the adjusting slats 20 have been moved, which, in this embodiment means that the inner adjusting slat forms the stop for the outer wall of the mould half, i.e., the narrowest mould opening.
  • a number of the adjusting slats 20 have been moved in longitudinal direction and the stop position for the outer wall of the mould half has been moved outward.
  • FIG 7 illustrates a perspective view of a device 1 according to an embodiment of the present invention, wherein the operating principle according to Figure 4-6 is applied.
  • the device 1 comprises a mould 2 and a holder 3 for supporting the mould 2, more particularly, a number of interconnected mould and holder parts as described elsewhere herein, so that materials, e.g. steel sheets, of considerable lengths, can be bent with this device.
  • the mould 2 is described in patent publication EP-A-1513628 . Therefore, not every part of the mould 2 will be described in detail, but only the parts of importance to the present invention.
  • the mould 2 comprises a first mould half 4 and a second mould half 5.
  • the first 4 and second mould halves 5 each extend in a longitudinal direction 6 and together enclose a mould cavity extending in the longitudinal direction.
  • the first mould half 4 comprises a set of parallel first elements 8 which each comprise a first extension 9 and an outer wall 17 (see Figure 12 ).
  • the second mould half 5 comprises a set of parallel second elements each comprising a second extension and an outer wall.
  • the first and second elements extend in a transverse direction and are arranged alternatingly in the longitudinal direction of the mould 2.
  • the first elements are arranged at a first distance from each other to receive said second extension of the second elements between them.
  • the second elements arranged at a second distance from each other to receive said first extension of the first elements between them.
  • the first and second elements have the same length, so that the first distance and the second distance are the same. In this way, the first and the second elements are identical, and can be produced in the same manner.
  • first outer walls 17 of the first elements 8 of the first mould half 4 together form the first outer wall 17 of the first mould half 4
  • said outer walls of the second elements of the second mould half 5 together form the second outer wall of the second mould half 5.
  • the first 4 and the second mould half 5 are moveable relative to each other in said transverse direction to adjust the width of the mould cavity. Moving the mould halves can be done by manual operations, but preferably by displacement means 19, which are integrated into the holder 3.
  • FIG. 12 An embodiment of the displacement means is shown in Figure 12 . They comprise an electrically driven screw system, with which a sliding element 23 can be moved in the transverse direction of the holder, On this sliding element there is arranged a cam 24, which engages a slot 26 in the mould element 8 below. It is clear that the displacement means may also be carried out in other ways known to the skilled person within the context of this invention.
  • the device 1 further comprises a first plurality of adjusting slats 20 and a second plurality of adjusting slats 21, which each extend in the longitudinal direction and are supported by the holder 3, in recesses 28 (as shown in Figure 6 ).
  • the first adjusting slats 20 form a variable stop for the first outer wall 17 and the second adjusting slats 21 form a variable stop for the second outer wall.
  • the adjusting slats 20, 21 are provided with recesses 25 and are movable in the longitudinal direction by means of the gripping means 6, for adjusting the stop position of the corresponding mould half.
  • gripping means 6 comprise on both sides a cam 7 moveable in transverse direction, which is moved laterally into a recess under the slats for selecting the slats 20, 2.1 to be moved. This cam can be moved back and forth with the aid of an electrically driven system, shown in Figure 6 .
  • the gripping means 6 further comprise pneumatically driven pulling elements 10, 11, which are provided for moving the cam 7 and the slats 20, 21 which the cam engages together in the longitudinal direction (as shown in Figure 5 ).
  • the gripping means 6 are not loaded during the folding or bending operations performed with the device 1, and can thus be executed lightly. It is clear that the gripping means may also be carried out in other ways known to the skilled person within the context of this invention. For example, for embodiments according to the operating principle of Figures 1-3 , rather, hydraulic gripping means are suitable, considering the movement of slats in a height direction against gravity.
  • the holder 3 has two inner walls, one 30 of which is shown in Figures 1-6 .
  • the walls 30 engage the recesses 28 in which the slats 20, 21 are accommodated and serve, on the one hand, for absorbing lateral compressive forces during bending or folding operations, and, on the other hand, as a stop for the corresponding mould half 4, 5, when all adjusting slats 20, 21 have been moved 'out of the way'.
  • adjusting slats are provided on both sides of the device 1, but it is also possible to provide the adjusting slats only on one side of the device.
  • Providing the adjustable stop on both sides has the advantage that the centre of the mould opening can always be kept in the same position, such that the pressing element, which, in use, is pressed downward from above in the centre of the mould opening to perform a bending operation, can have a fixed position. More specifically, it is then not necessary to move this pressing element and the device 1 laterally relative to each other if the width of the mould opening has been adjusted.
  • the device of Figure 7 is a system in which several holder and mould parts are interconnected to extend the obtained mould opening.
  • the adjusting slats 20, 21 are interconnected by means of connecting elements 29, shown in detail in Figure 11 .
  • These connecting elements 29 are planar elements which fit into corresponding recesses in the ends of the slats, such that the slats and the connecting elements are moveable along each other. It is clear that these connecting elements may also be embodied in other ways known to the skilled person within the scope of the appended claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blinds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP17740103.1A 2016-06-24 2017-06-19 Adjustable mould Active EP3475007B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2016/5474A BE1024166B1 (nl) 2016-06-24 2016-06-24 In breedte verstelbare matrijs
PCT/IB2017/053618 WO2017221125A1 (en) 2016-06-24 2017-06-19 Adjustable mould

Publications (2)

Publication Number Publication Date
EP3475007A1 EP3475007A1 (en) 2019-05-01
EP3475007B1 true EP3475007B1 (en) 2020-05-13

Family

ID=56549975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17740103.1A Active EP3475007B1 (en) 2016-06-24 2017-06-19 Adjustable mould

Country Status (5)

Country Link
US (1) US20190201964A1 (nl)
EP (1) EP3475007B1 (nl)
CN (2) CN112676391A (nl)
BE (1) BE1024166B1 (nl)
WO (1) WO2017221125A1 (nl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108453469B (zh) * 2018-03-19 2020-04-03 苏州洲洋精密机械科技有限公司 一种减少可调式模具毛坯种类的加工方法
CN109985963B (zh) * 2019-04-10 2023-12-08 苏州洲洋精密机械科技有限公司 一种可调模具的开口大小自动调整装置
CN112044992A (zh) * 2020-08-11 2020-12-08 广东职业技术学院 一种可调节的双面折弯机构

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JPS5944616U (ja) * 1982-09-08 1984-03-24 丸機械工業株式会社 フオ−ルデイングマシン用金型交換装置
JPS6192732A (ja) * 1985-09-27 1986-05-10 Maru Kikai Kogyo Kk 折曲げ用金型交換装置
US5022248A (en) * 1990-10-12 1991-06-11 Caterpillar Inc. Press brake apparatus with powered adjustable female die jaws
JPH08294728A (ja) * 1992-06-29 1996-11-12 Goiti Soc Coop Ltda 改良されたパネル折り曲げ機械
US5249452A (en) * 1993-02-17 1993-10-05 Caterpillar Inc. Adjustable master brake die
JP3550942B2 (ja) * 1997-05-08 2004-08-04 トヨタ自動車株式会社 プレス曲げ方法及び装置
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JP5135541B2 (ja) * 2007-11-08 2013-02-06 新日鐵住金株式会社 Ｕプレス機及びｕプレス機のロッカーダイ位置調節方法
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KR101729682B1 (ko) * 2010-11-04 2017-04-25 삼성디스플레이 주식회사 광학 유닛 및 이를 포함하는 표시 장치
CN103056225A (zh) * 2012-12-17 2013-04-24 安徽吉峰技研有限公司 一种活动可调式冲压模具
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Also Published As

Publication number Publication date
US20190201964A1 (en) 2019-07-04
BE1024166B1 (nl) 2017-11-23
CN109641254B (zh) 2020-12-04
CN112676391A (zh) 2021-04-20
WO2017221125A1 (en) 2017-12-28
CN109641254A (zh) 2019-04-16
EP3475007A1 (en) 2019-05-01

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