WO2004030881A1 - Marco de molde para prensado de azulejos con sujeción magnética de cuchillas. - Google Patents
Marco de molde para prensado de azulejos con sujeción magnética de cuchillas. Download PDFInfo
- Publication number
- WO2004030881A1 WO2004030881A1 PCT/ES2002/000462 ES0200462W WO2004030881A1 WO 2004030881 A1 WO2004030881 A1 WO 2004030881A1 ES 0200462 W ES0200462 W ES 0200462W WO 2004030881 A1 WO2004030881 A1 WO 2004030881A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blades
- frame
- magnetic
- tiles
- pressing
- Prior art date
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
-
- 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
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
-
- 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
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
- B28B7/366—Replaceable lining plates for press mould
Definitions
- the present invention relates to a mold frame for pressing of tiles with magnetic blade clamping intended to allow rapid exchange of the blades with a high degree of safety.
- This invention characterizes the use of electropermanent magnets or electromagnets in the clamping of the blades incorporating suitable means of eliminating the magnetic field for the removal and replacement of the blades.
- This invention presents a position of the magnets appropriate to the position of the blade and the loads it receives, be it horizontal or vertical position.
- the manufacture of tiles makes use of punches with high application pressures intended to compress the ceramic or clay material between two surfaces, a visible surface and another intended to be attached to the surface to be covered.
- the punches are two, one mobile top and one lower.
- the upper punch descends until it reaches the lower punch on which the earth or ceramic material is deposited.
- the upper face, on which the upper punch strikes is the hidden face of the tile, and the lower face in contact with the lower punch gives the shape of the face seen from the tile.
- the material is delimited by the presence of blades attached to a frame.
- the shape of the blades is what the edge of the tile will take.
- These blades are subjected to high pressures and friction stresses, so they are made of high strength materials and with heat treatments that increase hardness, especially on their surface.
- These blades usually have a step that gives rise to an area highlighted in the tile so that in their manufacture and during transport by the conveyor belt, by mutual contact, they do not come off.
- the surface is inclined favoring the expulsion of the tile. This inclination is known in the sector as "circulation”.
- the blades must also be changed when it is necessary to change the production to make use of different perimeter configurations.
- the present invention makes use of a magnetic fixing means that dramatically reduces the replacement time of blades since the release of the magnetic field and its new application is immediate.
- the present invention relating to a mold frame for pressing of tiles with magnetic blade clamping, overcomes the high replacement times of the blades that the frames known so far have.
- the frame is provided with magnetic fixing means of the blades.
- Frames based on screwed fasteners simply include a seating surface on which are the threaded holes that support the screws.
- This invention includes knife seats, magnetic fixing means, as well as devices that allow the control of magnetic flux to allow the blades to be removed by fixing new or recovered ones.
- Magnetic fixation is achieved with the application of a magnetic field that attracts the blades. This magnetic field can be achieved either by an electropermanent magnet or by an electromagnet.
- any magnetizable material is suitable, since by applying a high intensity magnetic field the magnetic domains that it presents at the microscopic level are oriented in the same direction ensuring from that moment the fixation of the blades without maintaining the external excitation.
- electro-permanent magnets that channel the magnetic flux properly allows two possible states: the activated electro-permanent magnet forcing the magnetic field generated by the magnetizable material to reach the blade, or the deactivated magnet where the magnetic field of the magnetizable material is deflected before reach the blade without exerting any clamping action.
- An alternative fixing means makes use of an electromagnet. In this case the excitation on the winding generated by the magnetic field must be constantly maintained for as long as the blades attached to the frame.
- the blades can be located in two positions with respect to the frame, either horizontally establishing the support on an upper horizontal face, or vertical covering the side of the internal window of the frame.
- the blade may be unique, or be composed of different elementary blades that cover each of the faces.
- the magnetic joining means are always behind the support surface of the blades against the frame in housings intended for it.
- an electropermanent magnet there is a magnet core located between ferrite or neodynium elements with their common poles (for example the N poles) oriented towards the core.
- This magnetic joint assembly is housed in a recess of the frame, being distanced from its bottom by means of a tablet of magnetizable material for example alnico.
- This tablet is surrounded by an excitation coil that magnetizes in one way or another the alnico tablet.
- the flow generated by this tablet goes outside the recess reaching the blades since it is opposed to the flow of the ferrite elements.
- the polarization is the opposite, the flow finds continuity with that generated by the ferrite elements so that the magnetic circuit that is established does not reach the blades.
- the magnetic joining means make use of an electromagnet, it is formed by a coil housed in a recess in the form of a closed guideline channel.
- the cajeado establishes a closed circuit where the winding that generates the magnetic field before the passage of current establishing in turn a magnetic field that flows through the core that is defined inside the circuit.
- Figure 1 shows a first embodiment of the invention that makes use of vertical blades and electromagnets.
- Figure 2 shows a second embodiment of the invention that makes use of horizontal blades and electromagnets.
- Figure 3 shows a first embodiment of the invention that makes use of vertical blades and electropermanent magnets.
- Figure 4 shows a second embodiment of the invention that makes use of horizontal blades and electropermanent magnets.
- Figure 5 shows a diagram of the two modes of operation of the permanent magnet according to the polarization of the lower pad.
- Figure 6 shows a supporting detail of the lower blades in which instead of using a second strip, a flange of the frame is used when the blades are vertical.
- the present invention consists of a mold frame for pressing of tiles with magnetic blade clamping in which by means of the combined arrangement of housing housings of magnetic field generation assemblies, the fixing of the blades is achieved.
- First embodiment Use of electromagnet and vertical arrangement of the blades.
- the first embodiment is shown in Figure 1 where the plan and elevation of the frame (1) is shown together with a detailed view of the section with the means for fixing the blade (3).
- the blade (3) ensures its position by means of fastening strips (4, 5) that record the exact position of the blades (3) with respect to the frame (1).
- Figure 6 shows a detail of this embodiment. tion and a later one in which there is also the possibility of dispensing with the lower strip (5) since it is the frame itself that includes a frame tab.
- the clamping is achieved with an electromagnet configured by means of a winding (2) that is housed in a recess (1.3) in the form of a channel which results in an internal projection (1.2) through which the magnetic field generated by the channel is channeled. coil (2).
- the winding excitation (2) is what establishes control over the clamping force of the blades (3) so that, when it does not exist, exchange is possible.
- the blades (3) can be divided into several pieces that cover the entire interior perimeter of the window (1.4) or can cover it completely in one piece.
- the frame (1) includes perforations (1.1) by which it is secured to the tile forming mold.
- Second embodiment Use of electromagnet and horizontal arrangement of the blades.
- FIG. 2 This second embodiment is represented in Figure 2 where the frame (1) also shows two windows (1.4) only this time the blades (3) are placed on the frame (1), in a step (1.5) perimeter to the around each of the windows (1.4).
- the joining means are the same, only that tar facing the blade (3), now the projection (1.2) that is inside the recess (1.3) in which the coil (2) is housed is facing up.
- the function of registering or adjusting the position of the blade is ensured by the same recess (1.5) of the frame (1) where the blade is supported (3).
- Third embodiment Use of electropermanent magnet and vertical arrangement of the blades.
- the blades (3) are positioned vertically, between the registration strips (4, 5), relegating the magnetic fixing means to a single recess (1.6) .
- the lower strip (5) can be replaced by a frame flange (1) as shown in the second detail of Figure 6.
- the electropermanent magnet core (6) is located screwed to the bottom of the frame recess (1), flanked by pieces of ferrite (7) placed under pressure between the core (6) and the internal wall of the recess (1.6) of the frame (1).
- a tablet (8) responsible for controlling the magnetic flux of the electro-permanent magnet allowing the control of the clamping force to allow the exchange of the blades (3) .
- the tablet (8) is made of a magnetizable material, the material being used in this preferred embodiment, and is surrounded by a coil (10).
- the coil (10) acts for a short period of time depending on the size and nature of the material of the tablet (8) and which may be of the order of one second. At this time, the magnetic field imposed by the coil (10) on the tablet (8) remagnetizes it in the sense of interest.
- the ferrites (7) have the N poles oriented towards the core (6) permanently.
- the release of the blades is achieved by again exciting the coil (10) with a pulse that magne- Chalk the tablet (8) with an orientation of its poles upside down, that is, the S pole towards the core (6).
- the magnetic flux created by the tablet (8), as shown in Figure (6) is conducted by the ferrites (7) since a magnetic circuit is established with the frame (1).
- This magnetic circuit is closed before reaching the blades (3) so that they are not reached by the magnetic field and are free for replacement.
- the internal configuration of the blades (3) is identical to the first embodiment, where it is now only necessary to act on the magnetization and demagnetization means at the time of changing the blades (3) since the presence of the electropermanent magnet (6) together with the ferrite pieces (7) they ensure a constant magnetic flux that ensures fixation without external excitation.
- Fourth embodiment Use of electropermanent magnet and horizontal arrangement of the blades.
- the recess (1.6) is oriented upwards so that it faces the larger surface of the blade (3).
- the clamping screw (9) is arranged vertically by fixing the permanent magnet core (6) and the ferrite pieces (7); and, both elements are against the magnetization and demagnetization tablet (8) that occupies the space left at the bottom of the recess (1.6) of the frame (1).
- the second and fourth embodiments employ several groups of electro-permanent magnets (6) with their ferrite parts (7) until covering the length of the blade (3).
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Toys (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002337202A AU2002337202A1 (en) | 2002-10-02 | 2002-10-02 | Moulding frame for pressing tiles, comprising a magnetic blade-fixing system |
PCT/ES2002/000462 WO2004030881A1 (es) | 2002-10-02 | 2002-10-02 | Marco de molde para prensado de azulejos con sujeción magnética de cuchillas. |
EP02772429A EP1547741A1 (en) | 2002-10-02 | 2002-10-02 | Moulding frame for pressing tiles, comprising a magnetic blade-fixing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2002/000462 WO2004030881A1 (es) | 2002-10-02 | 2002-10-02 | Marco de molde para prensado de azulejos con sujeción magnética de cuchillas. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004030881A1 true WO2004030881A1 (es) | 2004-04-15 |
Family
ID=32050215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2002/000462 WO2004030881A1 (es) | 2002-10-02 | 2002-10-02 | Marco de molde para prensado de azulejos con sujeción magnética de cuchillas. |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1547741A1 (es) |
AU (1) | AU2002337202A1 (es) |
WO (1) | WO2004030881A1 (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1752282A1 (en) * | 2005-08-10 | 2007-02-14 | Sapp S.p.A. | Mold with a device for the anchoring on the platens of a press |
FI125405B (fi) * | 2008-04-29 | 2015-09-30 | Elematic Oyj | Valumuotin laitarakenne |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3195207A (en) * | 1962-10-15 | 1965-07-20 | Coignet Construct Edmond | Moulding device for all materials, concrete, reinforced concrete, plastic products, ceramics and the like |
US3667880A (en) * | 1968-11-26 | 1972-06-06 | Nat Res Dev | Edge form assembly for pressing of articles |
GB1319082A (en) * | 1970-06-08 | 1973-05-31 | Nat Res Dev | Concrete pressing processes and apparatus |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2064205B1 (es) * | 1992-07-01 | 1997-02-16 | Lizarazu Alberto Echeverria | Plancha para la formacion de camaras de moldeo de materiales abrasivos. |
-
2002
- 2002-10-02 WO PCT/ES2002/000462 patent/WO2004030881A1/es not_active Application Discontinuation
- 2002-10-02 AU AU2002337202A patent/AU2002337202A1/en not_active Abandoned
- 2002-10-02 EP EP02772429A patent/EP1547741A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3195207A (en) * | 1962-10-15 | 1965-07-20 | Coignet Construct Edmond | Moulding device for all materials, concrete, reinforced concrete, plastic products, ceramics and the like |
US3667880A (en) * | 1968-11-26 | 1972-06-06 | Nat Res Dev | Edge form assembly for pressing of articles |
GB1319082A (en) * | 1970-06-08 | 1973-05-31 | Nat Res Dev | Concrete pressing processes and apparatus |
Also Published As
Publication number | Publication date |
---|---|
AU2002337202A1 (en) | 2004-04-23 |
EP1547741A1 (en) | 2005-06-29 |
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