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EP4126485B1 - Dispositif d'aimant commutable - Google Patents

Dispositif d'aimant commutable Download PDF

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Publication number
EP4126485B1
EP4126485B1 EP21713970.8A EP21713970A EP4126485B1 EP 4126485 B1 EP4126485 B1 EP 4126485B1 EP 21713970 A EP21713970 A EP 21713970A EP 4126485 B1 EP4126485 B1 EP 4126485B1
Authority
EP
European Patent Office
Prior art keywords
magnet
packages
formwork
movement
magnet packages
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
EP21713970.8A
Other languages
German (de)
English (en)
Other versions
EP4126485A1 (fr
Inventor
Marko KIRBACH
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
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Filing date
Publication date
Application filed by BT Innovation GmbH filed Critical BT Innovation GmbH
Publication of EP4126485A1 publication Critical patent/EP4126485A1/fr
Application granted granted Critical
Publication of EP4126485B1 publication Critical patent/EP4126485B1/fr
Active legal-status Critical Current
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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
    • B28B7/002—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps using magnets
    • 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
    • B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
    • B28B7/0035—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding
    • B28B7/0041—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding the sidewalls of the mould being moved only parallelly away from the sidewalls of the moulded article
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/04—Means for releasing the attractive force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/002—Magnetic work holders

Definitions

  • the present invention relates to a switchable magnetic device and a system comprising a formwork device and a switchable magnetic device.
  • a switchable magnetic device is a magnetic device for fixing a formwork device to a formwork base.
  • a magnet is mounted so that it can pivot about a pivot axis. The magnet can be moved from a locking position, in which the magnet is in magnetic connection with a formwork base, to a release position by an actuating lever that is coupled to the magnet. In the locking position, the formwork device is fixed in its position for producing concrete parts.
  • SU 1 527 123 A2 a switchable magnetic device according to the preamble of claim 1.
  • US 6 168 221 B1 discloses a switchable magnetic device in which two magnet packages are moved simultaneously about a pivot axis by a linear actuation.
  • the present invention has been made in view of the aforementioned problems and its object is to provide a switchable magnetic device which requires a small working space and allows easy lifting of the magnet from the formwork base.
  • a switchable magnetic device which comprises a plurality of magnet packages which can be transferred between an interaction position in which the magnet package is preferably in a magnetic operative connection with a magnetizable formwork base, preferably by resting on the formwork base, and a release position in which the magnetic operative connection between the formwork base and the magnet package is reduced, preferably eliminated.
  • the magnetic device is configured such that the plurality of magnet packages performs a pivoting movement about a pivot axis at least in sections during the transfer between the interaction position and the release position.
  • the magnetic device further comprises an actuating device which can be coupled to the plurality of magnet packages for transferring the plurality of magnet packages between the interaction position and the release position.
  • the magnetic device is configured such that the actuating device performs a linear movement along a linear movement direction at least temporarily during the pivoting movement of the plurality of magnet packages.
  • the plurality of magnet packages performs a pivoting movement around a pivot axis at least in sections during the transfer between the interaction position and the release position.
  • the lever arm effect already mentioned above can reduce the lifting force that is transmitted to the magnet packages by the actuating device.
  • the magnet device is configured in such a way that the actuating device performs a linear movement along a linear direction of movement at least temporarily during the pivoting movement of the plurality of magnet packages. This means that work can be carried out in a small work space and operation is made easier for an operator.
  • the actuating device also does not have to be supported on a pivot axis of a formwork device for transfer. This makes configuration easier.
  • the magnetic device has a plurality of magnet packages, and the magnetic device is configured so that the plurality of magnet packages at least temporarily simultaneously perform the pivoting movement about their respective pivot axis.
  • the large number of magnet packages each perform a pivoting movement around their respective pivot axis which allows for easy lifting. Since the swivel movement can take place simultaneously, at least temporarily, the magnet packages can be lifted off evenly.
  • the linear direction of movement is a direction substantially perpendicular to the formwork support.
  • the working area can also be kept small and parallel to the formwork base.
  • the actuating device can be coupled to the plurality of magnet packages such that the plurality of magnet packages each have at least one degree of freedom intersecting the linear direction of movement with respect to the portion of the actuating device that can be moved linearly along the linear direction of movement.
  • At least one degree of freedom is a rotational degree of freedom about an axis parallel to the pivot axis. This can effectively prevent jamming of magnet packages and actuating device.
  • the magnetic device has at least one guide device that is configured to guide the actuating device along the linear direction of movement.
  • the actuating device for carrying out the pivoting movement is coupled to the plurality of magnet packages at a load introduction point that is further away from the respective pivot axis than the point of application of the resulting force that acts on the plurality of magnet packages through the magnetic active connection.
  • the magnetic device has at least one support device on which the plurality of magnet packages are mounted so as to be pivotable about the respective pivot axis.
  • the support device defines a pivot axis.
  • the magnet packages can therefore have a well-defined pivot axis on the magnetic device and do not have to be mounted on the formwork support, for example.
  • the actuating device is relatively movable with respect to the at least one support device, particularly preferably along the linear direction of movement.
  • the pivoting movement can be reliably introduced into the magnet packages, since the relative movement between the support device and the actuating device can prevent a translational movement of the large number of magnet packages.
  • the magnet device can be configured such that the plurality of magnet packages perform a translational movement during or after the pivoting movement about the respective pivot axis.
  • the oscillating motion allows the magnetic force resulting from the magnetic interaction between the multitude of magnet packages and the formwork base to be quickly reduced. With a lower effective magnetic force, the multitude of magnet packages can be quickly lifted off the formwork base in a translational manner with a low lifting force.
  • the magnet device further comprises a locking mechanism configured to lock the pivoting movement of the plurality of magnet packages.
  • the locking mechanism is configured such that it blocks the relative movement between the actuating device and the at least one support device. This allows the pivoting movement to be blocked after a predetermined path along the pivoting movement, which eliminates the need for a working space for a continuous pivoting movement.
  • the magnetic force is reduced after a predetermined path along the pivoting movement, which allows for easy translational lifting. If the pivoting movement is blocked, a lifting force with a component along the linear direction of movement can reliably initiate a translational movement of the plurality of magnet packages. Since the actuating device is relatively movable with respect to the at least one support device, the pivoting movement can be reliably blocked by blocking this degree of freedom.
  • the actuating device can have coupling points with the plurality of magnet packages at least during the translational movement of the plurality of magnet packages, which are arranged such that no torque acts on the actuating device.
  • the coupling points are arranged symmetrically with respect to an axis of the linear movement direction, which runs through an actuating point at which a load is introduced into the actuating device along the linear movement direction.
  • the actuating device can be moved particularly easily along the linear direction of movement. In particular, no constraining forces arise. This can be achieved in particular by arranging the coupling points symmetrically with respect to an axis that runs through an actuating point at which an operator grips the actuating device along the linear direction of movement.
  • the actuating device has a linear extension section which extends along the linear movement direction.
  • a lifting force can be transmitted along the linear direction of movement along the linear extension section.
  • the actuating device can have at least one lever portion configured to transfer a force having a component along the linear movement direction from an axis of the linear movement direction, which runs along the linear movement direction through an actuating point at which a load is introduced into the actuating device, to at least one coupling point remote from the axis of the linear movement direction.
  • the lever portion is coupled to the aforementioned linear extension portion.
  • the lever section allows the actuation point to be spaced apart from the coupling points at which the actuation device is coupled to the at least one mangle package. This allows adaptation to spatial boundary conditions in a formwork device.
  • a lifting force can be introduced centrally into the lever section and then shifted outwards for introduction into the magnet packages in order to ensure the largest possible lever arm.
  • a single actuating device can be coupled with the multitude of magnet packages.
  • the one actuating device for carrying out the pivoting movement of the plurality of magnet packages has coupling points with the magnet packages, which are arranged such that no torque acts on the actuating device.
  • the coupling points are preferably arranged symmetrically with respect to an axis of the linear movement direction, which runs along the linear movement direction through an actuating point at which a load is introduced into the actuating device.
  • the coupling points for carrying out the pivoting movement can also be arranged in such a way that no torque acts on the actuating device.
  • the actuating device can thus be moved particularly easily along the linear direction of movement even during the pivoting movement of the magnet packages. In particular, no constraining forces arise. This can be achieved in particular by arranging the coupling points symmetrically with respect to an axis that runs through an actuating point at which an operator grips the actuating device along the linear direction of movement.
  • At least some of the plurality of magnet packages are designed in the same way. This means that equal magnetic forces can act between the individual magnet packages and the formwork base. This enables the actuating device to be loaded evenly, which results in particular in the absence of a torque for the actuating device.
  • the plurality of magnet packages are evenly arranged in a circumferential direction about a central axis.
  • the central axis coincides with an axis of the linear movement direction which runs along the linear movement direction through an actuation point at which a load is introduced into the actuating device.
  • the lifting force can be introduced centrally and then evenly distributed across the magnet packages around the central axis.
  • a single support device is arranged in the middle between the plurality of magnet packages.
  • the aforementioned center axis runs through the support device. All magnet packages of the plurality of magnet packages are pivotably mounted on the one support device. It is particularly preferred if magnet packages lying opposite one another have a common pivot axis.
  • the support device can be arranged centrally and a symmetrical introduction of force into the support device can be achieved.
  • the magnetic device can have at least one release support device that is configured to support transfer of the respective magnet package into the release position.
  • the release support device is preferably coupled to the at least one support device and preferably has at least one elastic element, particularly preferably a spring element.
  • an elastic element such as a compression spring can be provided on the side of the formwork support, which is arranged between the support device and the formwork support.
  • the spring force can support a movement away from the formwork support.
  • a further aspect is directed to a system comprising a formwork device having a formwork section for shaping concrete parts and a switchable magnetic device according to one of the preceding aspects.
  • the switchable magnetic device can be coupled to the formwork device at least in the interaction position of the plurality of magnet packages such that a contact force with a component in the direction of the formwork base is transmitted to the formwork device.
  • the above magnetic device can fix the formwork device in its position in the interaction position.
  • access to the actuating device on the formwork device can be provided in a relatively small manner compared to the prior art, in which a large recess is provided for the actuating lever.
  • the magnetic device is arranged at least in sections in an interior of the formwork device.
  • the at least one guide device can comprise a section of the formwork device, wherein the formwork device preferably comprises a guide bushing that is configured to guide a section of the actuating device.
  • the actuating device can thus be guided by the formwork device, which stands stably on the formwork base. This ensures stable guidance.
  • a guide bushing can be attached to the formwork device particularly easily.
  • the system can have at least one elastic element, preferably a spring element, via which the magnetic device is coupled to the formwork device at least in the interaction position of the plurality of magnet packages.
  • the elastic element can also function as part of the release support device.
  • Figures 1 and 2 show a system 1 having a formwork device 2.
  • the formwork device 2 has a formwork section 21 for shaping concrete parts and is coupled to a magnetic device 3.
  • the magnetic device 3 comprises two magnet packages 31a and 31b, each of which can be transferred between an interaction position and a release position.
  • Figures 1 and 2 show the magnet packages 31a and 31b in the interaction position in which the magnet packages 31a and 31b are in a magnetic operative connection with a magnetizable formwork base 4.
  • the magnet packages 31a and 31b rest with their underside on the formwork base 4.
  • the formwork device 4 is made of a ferromagnetic material and is therefore magnetizable.
  • In the interaction position of the two magnet packages 31a and 31b there is a magnetic interaction between the formwork base 4 and the two magnet packages 31a and 31b, which applies a force component to the magnet packages 31a and 31b in the direction of the formwork base 4.
  • the two similar magnet packages 31a and 31b each have at least one permanent magnet.
  • the magnet packages 31a and 31b each have a plurality of permanent magnet elements in bar form that are spaced parallel to one another, and also ferromagnetic elements arranged between them.
  • the magnetic force acting on the magnet packages 31a and 31b is transferred to the formwork device 2, so that the formwork device 2 is fixed in its position.
  • the formwork section 21 forms a lateral boundary for a concrete part to be poured.
  • the formwork device can withstand high concreting pressures and enable concrete parts to be manufactured to exact dimensions.
  • the magnet device 3 has a single pivot axis 32, around which the two magnet packages 31a and 31b are each pivotably mounted.
  • the magnet packages 31a and 31b are mounted on a Support device 33 is attached.
  • the support device has a block-shaped part through which a cylindrical shaft 34 extends parallel to the formwork support 4, penetrating parallel opposite side surfaces, so that cylindrical projections protrude from the two side surfaces.
  • a central axis of the shaft 34 forms the pivot axis 32.
  • the support device 33 further comprises an axially symmetrical opening 35 extending from an upper side of the block-shaped part downwards in a direction perpendicular to the formwork base 4.
  • a cylindrical bolt 36 is arranged in the opening 35 so as to be relatively movable relative to the support device 33.
  • the bolt 36 extends linearly in a direction perpendicular to the formwork support 4.
  • the bolt 36 has a first threaded section 36a and a second threaded section 36b.
  • a lever plate 37 is arranged which extends essentially perpendicularly to both sides of the bolt 36 parallel to the formwork support 4.
  • the lifting plate 37 arranges the bolt centrally inside a through opening.
  • the lever plate 37 has a substantially cuboidal rod shape.
  • the lever plate 37 is secured to the bolts 36 above and below via lock nut structures 5a and 5b. This allows for simple production while simultaneously ensuring secure force transmission.
  • the lever plate 37 preferably has an internal thread in the area of the through hole. This makes the force transmission more efficient.
  • the lever plate 37 has elongated holes 37b1 and 37b2 penetrating the lever plate 37.
  • the elongated holes 37b1 and 37b2 are each penetrated by bolts 6a and 6b in a direction perpendicular to the direction of extension of the lever plate 37.
  • Plate-shaped compensation elements 7a and 7b are rotatably mounted on the bolts 6a and 6b.
  • the plate-shaped compensation elements 7a and 7b are penetrated at one end on the side of the lever plate 37 by the bolts 6a and 6b. At the opposite end, the plate-shaped compensation elements 7a and 7b each have openings through which the bolts 8a and 8b are guided.
  • the magnet packages 31a and 31b are each rotatably mounted on these bolts 8a and 8b.
  • the lever plate 37 has cylindrical openings 37c1 and 37c2 on both sides of the bolt 36, which penetrate the lifting plate 37 in the linear direction of movement.
  • the openings 37c1 and 37c2 are each penetrated by guide rods 11a and 11b, which are provided on the formwork device 2.
  • a button 9 as an actuating element is screwed via an internal thread to the second threaded portion 36b at an upper end of the bolt 36.
  • the button 9 extends in the linear movement direction.
  • the button 9 On its underside, the button 9 has a recessed receiving space 9a which extends upwards and is delimited by a bottom surface 9b.
  • the formwork device 2 has a bushing 22.
  • the bushing 22 can be provided on the formwork device 2, for example by welding.
  • the bushing 22 has a cylindrical recess 22a, which is delimited on an underside by a bottom surface 22b.
  • the button 9 rests with the bottom surface 9b on one end of a spring 10, which is partially accommodated in the receiving space 9a.
  • the opposite end of the spring 10 rests on the bottom surface 22b of the bushing 22.
  • An operator can cause the magnet packages 31a and 31b to perform a pivoting movement about the common pivot axis 32 by pulling on the knob 9 from the interaction position.
  • the operator can initiate the pivoting movement of the magnet packages 31a and 31b solely by applying a lifting force in a direction perpendicular to the formwork support 4, i.e. along the linear direction of movement.
  • the force is transferred from the button 9 to the central bolt 36 via the second threaded section 36b.
  • the force is finally transferred from the central bolt 36 to the outside via the lever plate 37 via the first threaded section 36a and the lock nut structures 5a and 5b, where it is introduced into the magnet packages 31a and 31b via the bolts 6a and 6b, the compensation elements 7a and 7b and the bolts 8a and 8b.
  • the bolts 8a and 8b are therefore each load introduction points for the magnet packages 31a and 31b, while the bolts 6a and 6b are each coupling points of the lever plate 37 as part of the actuating device with the magnet packages 31a and 31b.
  • the lifting force is introduced into the magnet packages 31a and 31b as a force pointing essentially in a direction perpendicular to the formwork base 4.
  • the lifting forces distributed between the two bolts 8a and 8b each act with a lever arm 12a or 12b with respect to the pivot axis 32.
  • a torque acts on the magnet packages 31a and 31b, which is not absorbed by the shaft 34 of the support device 33. Therefore, the magnet packages 31a and 31b each perform a pivoting movement, while the actuating device, which is formed by the button 9, the bolt 36 and the lever plate 37, is moved linearly perpendicularly away from the formwork base 4.
  • a switchable magnet device 3 which comprises a plurality of magnet packages 31a, 31b, which can be transferred between an interaction position in which the magnet package 31a or 31b with a formwork base 4 is in a magnetic operative connection with the formwork base, and a release position in which the magnetic operative connection between the formwork base and the magnet packages is reduced.
  • the release position is in Fig. 4 shown.
  • the magnet packages are shown in a pivoted position.
  • the magnet device 3 is thus configured such that the plurality of magnet packages 31a, 31b performs a pivoting movement about the pivot axis 32 at least in sections during the transfer between the interaction position and the release position.
  • the magnetic device comprises an actuating device 9, 36 and 37 which can be coupled to the plurality of magnet packages 31a, 31b for transferring the plurality of magnet packages 31a, 31b between the interaction position and the release position.
  • the magnetic device is configured such that the actuating device 9, 36 and 37 carries out a linear movement along a linear movement direction at least temporarily during the pivoting movement of the plurality of magnet packages 31a, 31b.
  • the plurality of magnet packages 31a, 31b performs a pivoting movement about the pivot axis 32 at least in sections during the transfer between the interaction position and the release position.
  • the lifting force transmitted to the magnet packages via the actuating device 9, 36 and 37 can be reduced by lever arm action.
  • the magnet device 3 is configured such that the actuating device 9, 36 and 37 at least temporarily during the pivoting movement of the plurality of magnet packages 31a, 31b performs a linear movement along a linear movement direction. Therefore, work can be carried out in a small work space and the operation is made easier for an operator. In particular, the Operator pulls the button 9 along the linear direction of movement.
  • the actuating device 9, 36 and 37 does not have to be supported on a swivel axis of a formwork device for transfer. This makes configuration easier.
  • the magnetic device 3 comprises a plurality of magnet packages 31a and 31b.
  • the magnetic device is configured such that the plurality of magnet packages 31a and 31b at least temporarily simultaneously perform the pivoting movement about their respective pivot axis 32.
  • the plurality of magnet packages 31a and 31b each perform a pivoting movement about their respective pivot axis 32, which enables easy lifting. Since the pivoting movement can take place at least temporarily simultaneously, the magnet packages can be lifted off evenly, as shown in Fig. 4 is shown.
  • the linear movement direction is a direction substantially perpendicular to the formwork base.
  • the actuating device is coupled to the magnet packages 31a and 31b via the compensation elements 7a and 7b.
  • the compensation elements 7a and 7b can each be rotated about the bolts 6a and 6b.
  • the magnet packages 31a and 31b can each be rotated with respect to the compensation elements 7a and 7b by the bolts 8a and 8b.
  • the magnet packages 31a and 31b therefore each have two rotational degrees of freedom connected in series about axes that are parallel to the pivot axis 32 but spaced apart from one another with respect to the actuating device.
  • the magnet packages therefore each have at least one degree of freedom that intersects the linear direction of movement with respect to the section of the actuating device that can be moved linearly along the linear direction of movement (here the rigid body formed by bolt 36, lever plate 37 and button 9).
  • the guide rods 11a and 11b are provided, which penetrate the openings 37c1 and 37c2, respectively.
  • a pair of guide rods 11a and 11b and borders of the openings 37c1 and 37c2 constitute a guide device.
  • the actuating device moves linearly upwards and is guided by the guide rods 11a and 11b.
  • the lifting plate 37 is in Fig. 4 arranged higher than in Fig. 3 .
  • the central bolt 36 is also provided to slide in the opening 35 of the support device.
  • the edge of the opening 35 and the bolt 36 also form a guide device.
  • the bolt 36 is in Fig. 4 further from the support device 33 than in Fig. 3 .
  • an outer peripheral surface 9c of the button 9 is slidably received in the recess 22a of the bushing 22. Therefore, the edge of the recess 22a together with the button also represents a guide device.
  • each of the sections 9, 36, 37 is guided along the linear direction of movement. This allows the linear movement of the actuating device to be reliably achieved. Potential constraining forces can also be absorbed by the guide device, which can prevent the magnet package and actuating device from jamming.
  • the bolts 8a and 8b are load introduction points for the magnet packages 31a and 31b.
  • the bolts are each attached to an end of the magnet packages 31a and 31b that is remote from the pivot axis 32 in a direction perpendicular to the pivot axis 32.
  • the resulting magnetic forces Fmag acting on the magnet packages 31a and 31b can be regarded as acting in the center of the magnet packages 31a and 31b.
  • the actuating device for carrying out the pivoting movement is coupled to the magnet packages 31a and 31b at a load introduction point which is further away from the respective pivot axis 32 than the point of application of the resulting force Fmag which acts on the plurality of magnet packages through the magnetic active connection.
  • the magnet device 3 has a support device 33 on which the magnet packages 31a and 31b are pivotably mounted about the respective pivot axis 32.
  • the pivot axis 32 can be specified by the support device 33.
  • the magnet packages can therefore have a well-defined pivot axis 32 on the magnet device 3 and do not have to be mounted on the formwork base, for example.
  • the support device can also take on other tasks such as guiding the central bolt 36, as described above.
  • the central bolt 36 as part of the actuating device is provided in a sliding manner in the opening 35 of the support device 33.
  • the one actuating device is relatively movable with respect to the at least one support device along the linear direction of movement.
  • the pivoting movement can be reliably introduced into the magnet packages 31a and 31b, since the relative movement between the support device and the actuating device ensures freedom of movement for the pivoted magnet packages.
  • the magnet packages 31a and 31b are not only pivoted in the release position, but are also lifted off the formwork base 4 together with the support device 33 in a direction perpendicular to the formwork base 4.
  • the support device 33 which supports the magnet packages on the shaft 34, can be lifted off the ground.
  • the magnet device 3 is thus configured such that the magnet packages perform a translational movement during or after the pivoting movement about the respective pivot axis 32.
  • the swivel movement allows the magnetic force resulting from the magnetic interaction between the large number of magnet packages and the formwork base to be quickly reduced. With a lower effective magnetic force, the large number of magnet packages can be quickly lifted off the formwork base in a translational manner with a low lifting force.
  • the movement of the compensation elements 7a and 7b is limited by the border of the respective elongated holes 37b1 and 37b2.
  • the borders of the respective elongated holes 37b1 and 37b2 not only block the movement of the Compensating elements 7a and 7b, but also the pivoting movement of the magnet packages.
  • the locking mechanism is also configured by the borders of the respective elongated holes 37b1 and 37b2 in such a way that it blocks the relative movement between the actuating device and the at least one support device 33.
  • the pivoting movement can be blocked after a predetermined path along the pivoting movement, which makes the necessary working space for a continuous pivoting movement superfluous.
  • the magnetic force is reduced after a predetermined path along the pivoting movement, which allows a slight translational lifting to take place. If the pivoting movement is blocked, a lifting force with a component along the linear direction of movement can reliably initiate a translational movement of the plurality of magnet packages. Since the actuating device is relatively movable with respect to the at least one support device, the pivoting movement can be reliably blocked by blocking this degree of freedom.
  • the bolts 6a and 6b act as coupling points of the actuating device with the magnet packages.
  • the bolts 6a and 6b are arranged symmetrically with respect to a central axis of the central bolt 36 on both sides.
  • the central axis of the bolt 36 runs along the linear direction of movement and also runs through an actuating point at which a load (the lifting force) is introduced into the actuating device.
  • the actuating point here is the button 9, more precisely its central axis, which coincides with the central axis of the bolt 36 when assembled.
  • a resulting lifting force that an operator introduces into the actuating device is usually introduced along the central axis.
  • the coupling points are arranged symmetrically with respect to the axis of the resulting lifting force (central axis of the bolt 36) and thus have a lever arm of the same size to this axis, and in the case of locked compensation elements, the moments are opposite to each other, no resulting moment acts on the actuating device (on the section that can move linearly along the linear direction of movement) when it is subjected to the lifting force. If no torque acts on the actuating device, the actuating device can be moved particularly easily along the linear direction of movement. In particular, no constraining forces arise. This can be achieved in particular by arranging the coupling points symmetrically with respect to an axis that runs along the linear direction of movement through an actuating point at which an operator grips the actuating device.
  • the coupling points for carrying out the pivoting movement can be arranged in such a way that no torque acts on the actuating device.
  • the actuating device can thus be moved particularly easily along the linear direction of movement even during the pivoting movement of the magnet packages. In particular, no constraining forces arise. This can be achieved in particular by arranging the coupling points symmetrically with respect to an axis that runs along the linear direction of movement through an actuating point at which an operator grips the actuating device.
  • the actuating device has the bolt 36 and the button 9, both of which extend coaxially along the linear direction of movement.
  • Bolt 36 and button 9 thus represent a linear extension section whose axis extends along the linear direction of movement.
  • a lifting force can be transmitted along the linear direction of movement along the linear extension section.
  • the actuating device has the lever plate 37, which shifts forces away from the axis of the linear extension section (axis of the bolt 36 and the button 9).
  • the lifting plate is a lever section that is configured to shift a force with a component along the linear movement direction from an axis of the linear movement direction, which runs along the linear movement direction through an actuating point at which a load is introduced into the actuating device, to at least one coupling point away from the axis of the linear movement direction.
  • the lever section is force-lockingly coupled to the linear extension section via the two lock nut structures 5a and 5b.
  • the lever section allows the actuation point to be provided at a distance from the coupling points at which the actuation device is coupled to the plurality of magnet packages. This allows adaptation to spatial boundary conditions in a formwork device.
  • a lifting force can be introduced centrally into the lever section and then shifted outwards for introduction into the magnet packages in order to ensure the largest possible lever arm.
  • a single actuating device 9, 36 and 37 is further coupled to the magnet packages 31a and 31b.
  • the magnet packages 31a and 31b are also arranged at circumferential angles of 180° from one another. More precisely, the perpendiculars to the pivot axis 32 of the two magnet packages 31a, which run parallel to the formwork base 4, form a straight line. The magnet packages 31a and 31b are thus arranged evenly in a circumferential direction around a central axis.
  • the center axis of the bolt 36 coincides with the center axis around which the magnet packs 31a and 31b are evenly arranged.
  • the center axis around which the magnet packs 31a and 31b are evenly arranged coincides with an axis of the linear movement direction that runs along the linear movement direction through an actuation point at which a load is introduced into the actuation device.
  • the lifting force can be introduced centrally and then distributed evenly to the magnet packages around the central axis.
  • a single support device 33 is arranged in a middle between the plurality of magnet packages.
  • the central axis of the bolt 36 runs through the support device 33 and is also a central axis of the support device 33.
  • the magnet packages 31a and 31b, which are opposite one another, have a common pivot axis.
  • the support device 33 can be arranged centrally and a symmetrical introduction of force into the support device 33 can be achieved.
  • the system has a formwork device 2, which has a formwork section 21 for shaping concrete parts, and a switchable magnetic device 3 according to the preceding embodiments.
  • the switchable magnetic device is coupled to the formwork device 2 at least in the interaction position of the magnet packages 31a and 31b in such a way that a contact force with a component in the direction of the formwork base 4 is transmitted to the formwork device.
  • the above magnetic device can fix the formwork device in its position in the interaction position.
  • access to the actuating device on the formwork device can be provided in a relatively small manner compared to the prior art, in which a large recess is provided for the actuating lever.
  • the formwork device 2 as in Fig. 1 shown, has a formwork support section 23.
  • the formwork support section 23 supports the formwork section 21 and has a cover section 23a, which lies on a side facing away from the formwork base 4 and preferably extends horizontally here.
  • cover section 23a On both sides in the longitudinal direction of the formwork device 2, which is defined by the longitudinal extent of the formwork section 21, lateral sections 23b extend from the cover section 23a downwards in the direction of the formwork base.
  • the cover section 23a and the two lateral sections 23b form a receiving space, in the interior of which the magnetic device is accommodated at least in sections. Only the button 9 protrudes upwards from the formwork support section 23.
  • the button 9 is designed to be detachable from the bolt 36 so that the button 9 can also be removed.
  • the actuating device thus has a detachable section that can be coupled to actuate the magnetic device.
  • the formwork device (the formwork support section 23) comprises the guide bushing 22 which guides the button 9 along the linear movement direction.
  • at least one guide device comprises a section of the formwork device.
  • the guide bushing can be attached to the formwork device particularly easily, for example by welding.
  • the button 9 rests with the bottom surface 9b on one end of a spring 10, which is partially accommodated in the receiving space 9a.
  • the spring 10 is designed here as a compression spring.
  • the opposite end of the spring 10 rests on the bottom surface 22b of the bushing 22.
  • the system 1 thus has at least one elastic element via which the magnetic device 3 is coupled to the formwork device 2 at least in the interaction position of the plurality of magnet packages. More precisely, the spring 10 is arranged between the magnetic device 3 and the formwork device 2.
  • the magnetic device has at least one release support device that is configured to support transferring the respective magnet package into the release position.
  • the release support device is preferably coupled to the at least one support device and preferably has at least one elastic element, particularly preferably a spring element.
  • the spring 10 just described is also part of a release support device. The elastic spring force supports the lifting of the magnet packages and can optionally hold the magnet packages in the release position.
  • a substantially rectangular frame plate 13 is used for the assembly.
  • the frame plate has a substantially rectangular recess 13a, which has larger dimensions than the assembled magnet packages 31a and 31b.
  • the frame plate 13 can rest on a non-magnetic base, for example a wooden table, whereby the base also has a recess at least the size of the recess 13a.
  • the magnet packages 31a and 31b pre-assembled on the support device 33 can then be inserted into the recess.
  • the actuating device is also pre-assembled except for the button 9.
  • the guide rods 11a and 11b are provided on the frame plate 13.
  • the pre-assembled actuating device can then simply be placed on the guide rods 11a and 11b via the openings 37c1 and 37c2.
  • the pre-assembled magnet packages 31a and 31b can be aligned accordingly and coupled to the actuating device via the compensation elements 7a and 7b.
  • the frame plate 13 also has an auxiliary assembly opening 13b on both transverse sides.
  • the formwork device 2 also has corresponding auxiliary assembly openings on a lower section 23c, which faces the formwork base 4 and extends parallel to the cover section 23a. It should be noted that the formwork device 2 is rotated for better assembly, as shown in Fig. 5 In particular, the lower section 23c is shown in Fig. 5 directed upwards.
  • dowel pins are fitted into the auxiliary assembly openings of the formwork device.
  • the auxiliary assembly openings 13b of the frame plate 13 are then aligned and fitted with the dowel pins.
  • the frame plate 13 is then attached to the formwork device 2 via through holes 13c at all four corners of the frame plate with corresponding holes in the lower section 23c of the formwork device 2 by means of bolts and nuts which are in Fig. 1 shown. Finally, the dowel pins are pulled out.
  • the frame plate 13 When assembled and aligned on the formwork support 4, the frame plate 13 is located below the lower section 23c.
  • the frame section 13 is provided, which has at least one guide device 11a or 11b and at least one positioning aid 13b.
  • the magnet packages can thus be aligned according to the guide section and coupled to the actuating device coupled to the guide device.
  • the entire pre-assembled magnet device 3 can then be aligned relative to the formwork device using the positioning aid.
  • the magnet device can thus be constructed separately from the formwork device.
  • the assembly is further facilitated if the support device as well as the actuating device and the articulated connection via the bolts 6a and 6b as well as 8a and 8b and compensating elements 7a and 7b are made of non-magnetic materials.
  • these parts can be made of non-magnetic metals or synthetic resins.
  • the magnet packages are pivoted and moved translationally.
  • the release position can also be a position in which the multitude of magnet packages are merely pivoted.
  • the sequence of translation and pivoting movement is also not fixed.
  • the multitude of magnet packages can first be pivoted into an intermediate pivoting position, from which they are then only lifted translationally into the complete release position. Translation and pivoting movement can also be carried out simultaneously.
  • the form of the locking mechanism is also not limited.
  • the pivoting movement can also be blocked by a stop in the support device 33, against which a projection at the lower end of the bolt 36 rests.
  • the relative movement of the parts that are relatively movable to one another, the support device 33 and the actuating device (bolt 36 thereof), is immediately blocked.
  • the number of guide devices is not specified. However, one guide device is preferably provided for each coupling point.
  • the degree of freedom intersecting the linear direction of movement is not limited to a rotational degree of freedom.
  • At least one translational degree of freedom intersecting the linear direction of movement can also be provided with respect to the linearly moving section (rigid section made up of button 9, bolt 36 and lever plate 37, which form a rigid body in the above embodiment).
  • a sliding block can also be provided which can move in a direction intersecting the linear direction of movement, preferably perpendicular to the linear direction of movement, in the above embodiment thus parallel to the formwork base, in which the plurality of magnet packages can move in a sliding manner.
  • the sliding block is preferably also mounted in an articulated manner in order to allow compensation in the orientation.
  • An elastic Element such as an elastomer section, may be provided between or within the actuator and magnet package.
  • the actuating device can also be designed integrally.
  • the actuating device can comprise one or more sections that are positioned upstream of the force flow when transferring a lifting force to the plurality of magnet packages.
  • the form of the release support device is also not limited.
  • an elastic element such as a compression spring can be provided on the side of the formwork base, which is arranged between the support device and the formwork base.
  • the spring force can support a movement away from the formwork base. In particular, a translational movement can be supported.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Looms (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (9)

  1. Dispositif magnétique commutable (3) permettant d'immobiliser un dispositif de coffrage (2) sur un support de coffrage (4), comprenant :
    une pluralité de paquets magnétiques (31a, 31b), qu'il est possible de faire respectivement passer d'une position d'interaction dans laquelle la pluralité de paquets magnétiques (31a, 31b) est en liaison magnétique active avec le support de coffrage (4) à une position de séparation dans laquelle la liaison magnétique active entre le support de coffrage (4) et la pluralité de paquets magnétiques (31a, 31b) est réduite, dans lequel
    le dispositif magnétique (3) est configuré de sorte que la pluralité de paquets magnétiques (31a, 31b) effectue un mouvement de pivotement autour d'un axe de pivotement (32) au moins par sections pendant le passage de la position d'interaction à la position de séparation, et
    un dispositif d'actionnement (9, 36, 37), qui est couplé à la pluralité de paquets magnétiques (31a, 31b) afin de faire passer la pluralité de paquets magnétiques (31a, 31b) de la position d'interaction à la position de séparation et afin d'effectuer le mouvement de pivotement de la pluralité de paquets magnétiques (31a, 31b), dans lequel
    le dispositif magnétique (3) est configuré de sorte que le dispositif d'actionnement (9, 36, 37) effectue un déplacement linéaire le long d'une direction de déplacement linéaire au moins temporairement pendant le mouvement de pivotement de la pluralité de paquets magnétiques (31a, 31b) et effectue le déplacement linéaire l'éloignant du support de coffrage (4) pendant le mouvement de pivotement de la position d'interaction à la position de séparation, et
    le dispositif magnétique est configuré de sorte que la pluralité de paquets magnétiques (31a, 31b) effectue simultanément le mouvement de pivotement autour de leur axe de pivotement respectif,
    dans lequel le dispositif magnétique présente au moins un dispositif de support (33) qui présente l'axe de pivotement (32) respectif et sur lequel la pluralité de paquets magnétiques (31a, 31b) est montée pivotante autour de l'axe de pivotement (32) respectif,
    dans lequel le dispositif d'actionnement (9, 36, 37) est relativement mobile par rapport au au moins un dispositif de support (33),
    dans lequel le dispositif d'actionnement (9, 36, 37) permettant d'effectuer le mouvement de pivotement est couplé à la pluralité de paquets magnétiques (31a, 31b) respectivement au niveau d'un point d'introduction de charge qui est plus éloigné de l'axe de pivotement (32) respectif que le point d'application de la force résultante qui agit respectivement sur la pluralité de paquets magnétiques (31a, 31b) grâce à la liaison magnétique active,
    caractérisé en ce que
    un dispositif de support (33) unique est agencé à mi-chemin entre la pluralité de paquets magnétiques (31a, 31b).
  2. Dispositif magnétique commutable selon la revendication 1, dans lequel la direction de déplacement linéaire est une direction essentiellement perpendiculaire au support de coffrage (4).
  3. Dispositif magnétique commutable (3) selon l'une quelconque des revendications précédentes, dans lequel le dispositif d'actionnement (9, 36, 37) est respectivement couplé à la pluralité de paquets magnétiques (31a, 31b) de sorte que la pluralité de paquets magnétiques (31a, 31b) présente respectivement au moins un degré de liberté coupant la direction de déplacement linéaire par rapport à la section du dispositif d'actionnement (9, 36, 37) qui peut se déplacer de manière linéaire le long de la direction de déplacement linéaire.
  4. Dispositif magnétique commutable (3) selon l'une quelconque des revendications précédentes, dans lequel le dispositif magnétique (3) présente au moins un dispositif de guidage (11a, 11b, 35, 22a) configuré pour guider le dispositif d'actionnement (9, 36, 37) le long de la direction de déplacement linéaire.
  5. Dispositif magnétique commutable (3) selon l'une quelconque des revendications précédentes, dans lequel le dispositif magnétique (3) est configuré de sorte que la pluralité de paquets magnétiques (31a, 31b) effectue un mouvement de translation pendant ou après le mouvement de pivotement autour de l'axe de pivotement (32) respectif.
  6. Dispositif magnétique commutable (3) selon l'une quelconque des revendications précédentes, dans lequel le dispositif magnétique (3) présente en outre un mécanisme de verrouillage configuré pour bloquer le mouvement de pivotement de la pluralité de paquets magnétiques (31a, 31b).
  7. Dispositif magnétique commutable selon l'une quelconque des revendications précédentes, dans lequel le dispositif d'actionnement (9, 36, 37) permettant d'effectuer le mouvement de pivotement de la pluralité de paquets magnétiques (31a, 31b) présente des points de couplage avec les paquets magnétiques, lesdits points de couplage étant agencés de manière à ce qu'aucun couple n'agisse sur le dispositif d'actionnement (9, 36, 37).
  8. Dispositif magnétique commutable (3) selon l'une quelconque des revendications précédentes, dans lequel le dispositif magnétique (3) présente au moins un dispositif d'assistance de séparation (10) qui est configuré pour assister le passage du paquet magnétique (31a, 31b) respectif à la position de déverrouillage.
  9. Système, comprenant :
    un dispositif de coffrage (2), qui présente une section de coffrage permettant de donner leur forme aux pièces en béton, et
    un dispositif magnétique commutable (3) selon l'une quelconque des revendications précédentes,
    dans lequel, au moins dans la position d'interaction de la pluralité de paquets magnétiques (31a, 31b), le dispositif magnétique commutable (3) est couplé au dispositif de coffrage (2) de sorte qu'une force de pression est transmise au dispositif de coffrage (2) avec une composante située dans la direction du support de coffrage (4).
EP21713970.8A 2020-03-25 2021-03-25 Dispositif d'aimant commutable Active EP4126485B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/EP2020/058400 WO2021190747A1 (fr) 2020-03-25 2020-03-25 Appareil de coffrage
DE102020122839.2A DE102020122839A1 (de) 2020-03-25 2020-09-01 Schaltbare Magnetvorrichtung
PCT/EP2021/057761 WO2021191358A1 (fr) 2020-03-25 2021-03-25 Dispositif d'aimant commutable

Publications (2)

Publication Number Publication Date
EP4126485A1 EP4126485A1 (fr) 2023-02-08
EP4126485B1 true EP4126485B1 (fr) 2024-11-06

Family

ID=70154372

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Application Number Title Priority Date Filing Date
EP21713970.8A Active EP4126485B1 (fr) 2020-03-25 2021-03-25 Dispositif d'aimant commutable

Country Status (5)

Country Link
US (1) US12076887B2 (fr)
EP (1) EP4126485B1 (fr)
CN (1) CN115666889A (fr)
DE (1) DE102020122839A1 (fr)
WO (2) WO2021190747A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202023001742U1 (de) 2023-08-17 2023-10-16 B.T. Innovation Gmbh Schalungssystem
CN117445148B (zh) * 2023-12-01 2024-06-28 临沂朗宇建陶有限公司 一种燕尾槽瓷砖加工模具

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DE1946274U (de) * 1966-05-20 1966-09-15 Kurt Smolka Vorrichtung zum aufspannen von randschalungen auf stahlformboeden.
SU497141A1 (ru) * 1968-05-07 1976-03-18 Специальное Конструкторское Бюро "Прокатдеталь" Главмосстроя Устройство дл изготовлени железобетонных изделий на вибропрокатных станах
NL6813918A (fr) 1968-09-27 1970-04-01
DE2309819A1 (de) * 1973-02-28 1974-08-29 Mannesmann Leichtbau Gmbh Giessform zur herstellung von fertigbauteilen
DE2907508A1 (de) * 1979-02-26 1980-09-04 Magnetfab Bonn Gmbh Flachhaft-dauermagnet zur fixierung von schalungsteilen
FR2579512B1 (fr) * 1985-04-01 1987-06-19 Rech Etudes Tech Installation de procede pour la fabrication d'elements en beton arme, notamment de dalles ou predalles en beton precontraint
SU1527123A2 (ru) 1987-12-08 1989-12-07 Краматорский Научно-Исследовательский И Проектно-Технологический Институт Машиностроения Магнитное подъемное устройство
DE19528842A1 (de) * 1995-08-04 1997-02-06 Reymann Technik Gmbh Schalungssystem für Betonfertigteile
DE19903819A1 (de) 1999-02-02 2000-08-03 Reymann Technik Gmbh Schalungssystem für Betonfertigteile
US6168221B1 (en) * 1999-03-17 2001-01-02 Daimlerchrysler Corporation Magnetic carrier
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DE102018212422A1 (de) 2018-07-25 2020-01-30 B.T. Innovation Gmbh Magnetische Schalungsvorrichtung

Also Published As

Publication number Publication date
WO2021190747A1 (fr) 2021-09-30
DE102020122839A1 (de) 2021-09-30
US20230117992A1 (en) 2023-04-20
EP4126485A1 (fr) 2023-02-08
US12076887B2 (en) 2024-09-03
WO2021191358A1 (fr) 2021-09-30
CN115666889A (zh) 2023-01-31

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