EP1638745A1 - Dispositif de maintien - Google Patents

Dispositif de maintien

Info

Publication number
EP1638745A1
EP1638745A1 EP04735013A EP04735013A EP1638745A1 EP 1638745 A1 EP1638745 A1 EP 1638745A1 EP 04735013 A EP04735013 A EP 04735013A EP 04735013 A EP04735013 A EP 04735013A EP 1638745 A1 EP1638745 A1 EP 1638745A1
Authority
EP
European Patent Office
Prior art keywords
magnet
holding device
formwork
locking
pivot axis
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.)
Withdrawn
Application number
EP04735013A
Other languages
German (de)
English (en)
Inventor
Felix Von Limburg
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.)
BT Innovation GmbH
Original Assignee
BT Innovation GmbH
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 BT Innovation GmbH filed Critical BT Innovation GmbH
Publication of EP1638745A1 publication Critical patent/EP1638745A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
    • B28B7/0017—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps for attaching mould walls on mould tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
    • B28B7/002—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps using magnets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/033—Magnet

Definitions

  • the present invention relates to a holding device, preferably formwork device, with a magnet, which can be transferred from a locking position in which the magnet is preferably with a magnetizable formwork support preferably by contact with the formwork support in a magnetic operative connection with the formwork underlay in a release position is, in which the magnet is spaced from the formwork support.
  • Such a holding device is z. B. from EP 0 842 339 B1 known-
  • the holding device is formed here by a shuttering device having a magnet.
  • the magnet is arranged within the formwork device and can be raised and lowered vertically within this formwork device.
  • the formwork device is mounted on a preferably metallic formwork support such. B. a formwork table placed. In the locking position, the magnet rests against the formwork support in order to prevent displacement of the formwork device along the surface of the formwork support by the magnetic force between the magnet and the formwork support. To move the formwork device on the formwork support the magnet must be transferred to the release position in which it is spaced from the formwork support.
  • the magnet In this spaced position, the magnet no longer generates a magnetic holding force with respect to the formwork support, so that the formwork device is displaceable.
  • two spaced-apart, against the formwork support vertically extending bolts are provided, by means of which the magnet can be raised to transfer from the locking position to the release position.
  • the magnet In the release position, the magnet is arranged parallel to its locking position, but spaced from the surface of the shuttering pad.
  • the magnet In its release position, the magnet is held by springs between the bolts and the formwork device, where he suppressed contrary to its attractive force to formwork underlay.
  • the bolts with the springs project vertically over the formwork and can be gripped by a lever. Since they protrude beyond the formwork device, they pose a risk of injury.
  • the object of the invention is therefore to provide a simple and reliable holding device whose operation is as simple as possible.
  • a holding device of the type mentioned in which the magnet for transferring from the locking position to the release position is rotatably mounted about a pivot axis, so that it is arranged pivoted in the release position relative to the locking position.
  • This solution is simple and has the advantage that the magnet can be transferred with only one movement of the locking position in the spaced from the surface of the formwork support release position. This results in a very simple operation, in which the magnet only has to be rotated about its pivot axis in order to be transferred from the locking position to the release position.
  • a pivotable magnet can be easily manufactured.
  • the magnet should be arranged so that it rests substantially flat in the locking position on the formwork underlay to thereby act as effectively as possible. Since it is rotatable about the pivot axis, it assumes immediately after the beginning of the transfer from the locking position to the release position a slightly oblique position relative to the surface of the shuttering pad, so that the magnetic force decreases rapidly.
  • pivot axis is arranged laterally on the magnet. This can be ensured in a simple manner that in the release position of the magnet completely maintains a sufficient distance from the formwork support.
  • the pivot axis can be formed by a pivot shaft mounted in the holding device. This makes it easier in particular a retrofitting of existing holding devices, as a Schenk wave can be easily retrofitted.
  • the holding device is designed as a frame.
  • the holding device z. B. may be a carrier having the magnet and is suitable for different applications.
  • the holding device at least partially overlaps the magnet. This makes it possible to easily achieve a stable construction, which has sufficient rigidity.
  • the holding device may have a locking device which holds the magnet in its release position.
  • the locking device may have a magnetizable or magnetic portion which is in magnetic release engagement with the magnet for holding the magnet in the release position. As a result, the magnet can be locked in the release position in the simplest way.
  • the locking device is dimensioned so that the magnetic force between the locking device and magnet is slightly larger than a by at least the weight of the magnet generated, the magnet in the locking position urging, restoring torque. This is to ensure that the holding force of the locking device is just large enough to lock the magnet in the release position.
  • the magnet should be able to be reversed by comparatively little effort from the release position into the locked position.
  • the magnet can be brought with its upper side in connection with the locking device.
  • an actuating device can be provided, with the magnet can be transferred from its locking position to its release position.
  • an opening can be provided, through which the magnet is accessible at least in the locked position.
  • a particularly simple operation can be produced when the actuating device has a lever which can be brought into engagement with the magnet for transferring the locking position into the release position, or is in engagement with the magnet and is pivotally supported on the retaining device.
  • lever is pivotally mounted about a lever pivot axis on the holding device. This also simplifies the design and increases the ease of use.
  • the magnet can be arranged between the lever pivot axis and pivot axis. As a result, the magnet is pivotally mounted on one side so to speak, and is attacked on the other side with the lever on the magnet to lift the magnet.
  • the holding device can be formed by a shuttering device. Then, the holding device may be formed integrally with a formwork device. This makes it possible to realize a very compact construction.
  • the formwork device is substantially U-shaped when viewed in cross-section. As a result, sufficient strength can be achieved.
  • the U-shaped design allows the inclusion of the magnet inside the formwork device. The legs of the U-shaped cross-section of the formwork device are supported on the formwork underlay and overlap the magnet.
  • the formwork device may have the opening through which the lever protrudes and the lever for transferring the magnet be operable from its locking position in the release position outside the formwork device.
  • the opening is arranged on an upper side of the formwork device, since then it does not impair the functioning of the formwork device.
  • the magnet protrudes at least in sections in the release position relative to the formwork device. Then it is easy to see that the magnet is in the release position and the operation can be done to return to the locked position from the outside.
  • the magnet has a stop aut réelle, which limits the pivoting movement of the release position in the locked position, as soon as the magnet is slightly pivoted beyond the locking position.
  • a stop aut réelle limits the pivoting movement of the release position in the locked position, as soon as the magnet is slightly pivoted beyond the locking position.
  • the pivot axis may be arranged in a bearing portion which is detachably connected to the magnet.
  • FIG. 1 shows the holding device according to the invention in a sectional view with the magnet in the locking position.
  • Fig. 2 shows the holding device according to the invention with the magnet in the release position and
  • Fig. 3 is an oblique view of the holding device according to the invention.
  • FIG. 1 shows the holding device 1 in a sectional view.
  • the holding device has a shuttering device 2, which is preferably made of steel and has a U-shaped cross-section. This U-shaped cross-section is clearly visible in Figure 2 and is formed by a top wall 3 and on both sides adjoining legs 4, which are parallel to each other.
  • the formwork device 2 rests with bearing surfaces 5 on a surface 6 of a formwork support 7.
  • the shuttering pad 7 is preferably made of steel and is preferably part of a shuttering table.
  • a magnet 8 is arranged, which is mounted pivotably about a pivot axis 9.
  • the pivot axis 9 is formed as a pivot shaft and mounted in openings 10 of the formwork device 2. It also extends through a bearing portion 11 through, with the magnet 8 z. B. fixed by a screw, but is releasably connected.
  • the pivot axis 9 is thus supported in the formwork device 2, which thereby simultaneously forms a holding device for the magnet.
  • the pivot axis 9 extends parallel to the surface 6 of the formwork support 7 and is spaced therefrom. In the axial direction, the pivot axis 9 can be secured in a known manner by locking screws or the like.
  • the pivot axis 9 z. B integrally formed with the formwork device 2 or the magnet in the form of pivot pin, which in turn are then stored in the bearing section 11, and the openings 10.
  • the magnet 8 is designed as a permanent magnet in a known manner. In a locking position, as shown in Figure 1, the magnet lies with its bottom 12 flat on the surface 6 of the shuttering pad 7.
  • the magnet has a supporting device 13 fixedly connected to the magnets with a stop 14.
  • the stop can be brought into engagement with the top wall 3 of the formwork device 2.
  • the stop 14 is not in engagement with the top wall.
  • a twist angle with respect to the position shown in Figure 1 by about 3 ° to 5 ° is sufficient.
  • the stop 14 is then in engagement with the top wall 3, or is based on her from.
  • a locking device 15 is provided.
  • the magnet is in its release position on the top wall 3, when the formwork device 2 consists of steel.
  • the locking device 15 is formed by a small steel plate on which the magnet rests in the release position.
  • the size of the locking device 15 is chosen so that the resulting magnetic force is slightly larger than the moment counteracting the force between the magnet and locking device and is generated by the weight of the magnet together with the components connected to it about the pivot axis 9. This ensures on the one hand that the magnet dwells in the release position, on the other hand, it can also be returned with relatively little effort from the release position to the locked position.
  • the magnet has an engagement portion 16 which is fixedly connected to the magnet.
  • the engaging portion 16 is located on the opposite side of the pivot axis of the magnet.
  • an actuating device 17 which has a lever 18 and a lever pivot axis 19
  • the lever 19 extends through an opening 20 in the top of the formwork device 2 forming the top wall 3.
  • the lever pivot axis 19 can either by its own axis or by z. B. an edge of the opening 20 are formed. It is important that the lever pivot axis 19 allows pivoting of the lever.
  • the lever is removable, thereby ensuring a smooth outside of the formwork device in the locked position.
  • the lever pivot axis 19 is rotatably mounted in recesses 21.
  • the holding devices according to the invention are used in the production of precast concrete components.
  • the holding devices are placed on the surface 6 of the shuttering pad 7.
  • the formwork device 2 of the holding device 1 rests with the bearing surfaces 5 on the surface 6. This can be clearly seen in FIGS. 1 and 2.
  • the magnet In the release position, as shown in Figure 2, the magnet is in a pivoted position, so that its underside 12 is inclined relative to the surface 6 by about 15 ° to 30 °. With his top he is doing at the locking device 15. By the magnetic force it is secured to the locking device 15.
  • the formwork device 2, or holding device 1 is now moved to the appropriate position. ben. As soon as the desired position is reached, the magnet 8 is pushed down through the opening 20.
  • He is thereby spaced from the locking device 15 and released and falls due to its own weight on the top 6 of the shuttering pad 7. It pivots about its pivot axis 9, which is spaced from the surface 6 in such a manner and arranged to be in the Locking position, as shown in Figure 1, with its underside 12 flat on the surface 6 of the shuttering pad 7 rests. In this position, the magnet generates the maximum magnetic holding force relative to the surface 6 of the formwork support 7. Since the magnet 8 is fixedly connected via the pivot axis in directions parallel to the surface 6 of the formwork support 7, the formwork device 2 can not be displaced relative to the formwork support 7.
  • the holding device or formwork device 2 can again be removed from the formwork support 7 or moved thereon.
  • the magnet 8 must be transferred from its locking position into the release position.
  • the lever 18 is inserted through the opening 20, so that it engages behind the engagement portion 16.
  • the lever 18 is supported on the lever pivot axis 19, so that lifted by pressure on the lever 18 of the magnet and transferred to the release position. The lifting takes place until the magnet is pivoted so far that it is in engagement with the locking device 15.
  • the lever 18 can then be removed again.
  • the magnet or the engagement device of the magnet projects through the opening 20 and protrudes with respect to the cover wall 3. This makes it visually recognizable that the magnet is in the release position.
  • the magnet can be transferred again into the locked position.
  • the magnet is also suitable for industrial production with robots. The robot only has to drive over the upper side of the formwork device in order to transfer the magnet from the release position into the arresting position.
  • the stop 14 is provided.
  • the stop 14 engages with the top wall as soon as the magnet slightly protrudes from the support surfaces 5. That's the way it is possible to put the magnet on the formwork support in this position as well. He is then pressed by the formwork support again slightly inward, so that it assumes the locking position. The stop 14 is then spaced from the top wall 3.
  • the solution according to the invention provides a robust, reliable, easy-to-manufacture and easy-to-use holding device or formwork device.
  • the holding device is integrated in a formwork device. But it is also conceivable to provide a support which forms the holding device and the z. B. can be subsequently used in a formwork device 2. Also, such a holding device can be used elsewhere. Due to the simplicity of the construction, it is also possible to retrofit known formwork equipment. It is only necessary to provide the openings 10 for the pivot axis 9 and additionally provide an opening 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

L'invention concerne un dispositif de maintien, de préférence un dispositif de coffrage, comprenant un aimant qui peut passer d'une position de blocage, dans laquelle l'aimant se trouve de préférence en liaison magnétique active avec un support de coffrage magnétisable, de préférence en étant appliqué sur ce dernier, à une position de libération, dans laquelle l'aimant est situé à distance du support de coffrage. L'objectif de l'invention est de simplifier de tels dispositifs de maintien. A cet effet, l'aimant est monté de manière à pouvoir tourner autour d'un axe de pivotement pour passer de la position de blocage à la position de libération, de façon à être basculé dans la position de libération par rapport à la position de blocage.
EP04735013A 2003-06-27 2004-05-27 Dispositif de maintien Withdrawn EP1638745A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20309970U DE20309970U1 (de) 2003-06-27 2003-06-27 Halteeinrichtung
PCT/EP2004/005723 WO2005000548A1 (fr) 2003-06-27 2004-05-27 Dispositif de maintien

Publications (1)

Publication Number Publication Date
EP1638745A1 true EP1638745A1 (fr) 2006-03-29

Family

ID=33441889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04735013A Withdrawn EP1638745A1 (fr) 2003-06-27 2004-05-27 Dispositif de maintien

Country Status (4)

Country Link
US (1) US7419131B2 (fr)
EP (1) EP1638745A1 (fr)
DE (1) DE20309970U1 (fr)
WO (1) WO2005000548A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005021094A1 (de) * 2005-05-06 2006-11-09 B.T. Innovation Gmbh Schaltbare Magnetvorrichtung
EP2064030B1 (fr) * 2006-09-15 2013-05-22 SRB Construction Technologies Pty Ltd. Agrafeuse magnétique
AU2007299567B2 (en) * 2006-09-18 2013-01-10 Illinois Tool Works Inc. A magnetic clamp
US8876096B2 (en) * 2012-07-05 2014-11-04 The Boeing Company Method and apparatus for forming an angled flange
WO2014146176A1 (fr) * 2013-03-22 2014-09-25 Perry John Underwood Dispositif de fixation magnétique
DE202013102330U1 (de) * 2013-05-29 2014-09-10 Wagner Magnete Gmbh & Co. Kg Schalungselement
US10052754B1 (en) * 2017-04-12 2018-08-21 Ullman Devices Corporation Magnetic tool holder
DE102018212422A1 (de) * 2018-07-25 2020-01-30 B.T. Innovation Gmbh Magnetische Schalungsvorrichtung
WO2021190747A1 (fr) 2020-03-25 2021-09-30 B.T. Innovation Gmbh Appareil de coffrage

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DE2907508A1 (de) * 1979-02-26 1980-09-04 Magnetfab Bonn Gmbh Flachhaft-dauermagnet zur fixierung von schalungsteilen
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Also Published As

Publication number Publication date
WO2005000548A9 (fr) 2006-03-16
DE20309970U1 (de) 2004-11-04
WO2005000548A1 (fr) 2005-01-06
US7419131B2 (en) 2008-09-02
US20070040092A1 (en) 2007-02-22

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