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EP1240998A2 - System for the compensation of dosing errors in multi-cavity briquetting presses en particulier for single-layer briquettes or the like - Google Patents

System for the compensation of dosing errors in multi-cavity briquetting presses en particulier for single-layer briquettes or the like Download PDF

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Publication number
EP1240998A2
EP1240998A2 EP02425135A EP02425135A EP1240998A2 EP 1240998 A2 EP1240998 A2 EP 1240998A2 EP 02425135 A EP02425135 A EP 02425135A EP 02425135 A EP02425135 A EP 02425135A EP 1240998 A2 EP1240998 A2 EP 1240998A2
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EP
European Patent Office
Prior art keywords
compensation system
layer
briquettes
elastomer
pad
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.)
Granted
Application number
EP02425135A
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German (de)
French (fr)
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EP1240998B1 (en
EP1240998A3 (en
Inventor
Alfredo Longinotti
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Longinotti Meccanica SRL
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Longinotti Meccanica SRL
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Publication of EP1240998A2 publication Critical patent/EP1240998A2/en
Publication of EP1240998A3 publication Critical patent/EP1240998A3/en
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Publication of EP1240998B1 publication Critical patent/EP1240998B1/en
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    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/021—Ram heads of special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/061—Cushion plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams
    • B30B15/067—Press rams with means for equalizing the pressure exerted by a plurality of press rams

Definitions

  • the dosing of the wet mixture is normally carried out by taking from a tank circular the desired quantity by means of buckets most often cylindrical and fitted with shutters. In this tank, the material is introduced already mixed, and a mixer - equipped with blades and scrapers - has for function of preventing material from settling.
  • the measuring cups come to take the material in the tank different distances from the center of rotation; for this reason and the fact by a random factor, even though the cups are completely filled (and therefore that we have volumes even perfectly equal), we are not able to guarantee that the percentages of the different components of the mixture remain equal in each individual well and therefore in all multiple mold compartments or cavities. It may therefore happen that the buckets are filled with different amounts of water and with gaps between the different components of the mixture.
  • the invention therefore relates to a compensation system and in any case for limiting dosing errors in multiple mold cavities of cement briquette presses, in particular of the monolayer type, which have a pressure plate under which several buffers.
  • an elastomer layer associated with each pad which ensures sufficient pressing of the material in the different cavities, even in the presence of limited differences in dosage and composition of the mixture in the different cavities.
  • each buffer is associated with a structure which comprises two plates between which is interposed said elastomer layer and on which this elastomer layer is vulcanized.
  • the two plates are mechanically connected to the means of screws or the like, in order to maintain the connection even in the case where the vulcanization would give way.
  • the elastomeric thicknesses can be interposed between each buffer and the pressure plate which carries said buffers or between each pad and the pad end plate itself, which comes into contact with the material to be pressed.
  • Each elastomer layer may have a hollow peripherally which compensates for the swelling caused in the elastomeric material during the pressure operation.
  • the drawing shows a possible embodiment of the invention, in a vertical section view, in the raised buffer position.
  • the reference 1 designates the base, that is to say the bottom of the mold, on which the frame 3 rests, to define a plurality of cavities 5 two of which are visible in the drawing.
  • the cavity 5 In the cavity 5 are poured quantities of material required to mold M briquettes, each compression operation. These quantities are not always equal in their dosage and composition, which causes differences in the pressing of briquettes and different structures thereof.
  • Reference 7 designates the pressure plate which is lowered by the press to make penetrate into the cavities 5 the buffers 9 fitted with the end plates 11 corresponding, which form the surfaces which come into contact with the material to be pressed to form the briquettes M.
  • the sandwich assembly 13 is obtained by vulcanizing a layer 13A elastomer between two plates 13B and 13C suitably prepared in surface in order to obtain a solid anchorage between the plates themselves and elastomer 13A.
  • Holes 15 are made on the pressure plate 7 for screw 15A for fixing the plate 13B to the pressure plate 7; we are planning also holes for indexing fingers 17 between the pressure plate 7 and the plates 13B, as well as through holes 19 (which protrude from plates 13C and reach the buffer 9), for the passage of security screws 19A which reach buffer 9 and cross it to connect it mechanically to pressure plate 7, with play with respect to the set 13; this is useful in the event that the 13A elastomer layer detachment from one or both plates 13B and / or 13C. Between plate 13C and the buffer 9 are provided for fixing means with the rods 21 anchored in plate 13C and nuts 21A which react in seats provided in buffer 9. There are also finger holes indexing 23 for plates 13C and buffer 9.
  • the specific molding pressure is approximately 200 kg / cm 2 .
  • the elastomer 13A of the sandwich assembly 13 was designed to undergo a crushing of approximately 1 mm, under the conditions mentioned above. In the case where a six-cavity mold 5 is used and in the case where the dosage of the mixture is perfect, in each cavity 5 the sandwich assembly is compressed by approximately 1 mm.
  • the compensation system described above can also be applied to molding of double layer briquettes or other agglomerated products. In these cases, it will be necessary to adapt the elasticity of the elastomer, taking into account the molding pressures specific to each case.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Finishing Walls (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Processing Of Solid Wastes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

Between the pressure plate (7) and each plug (9) located underneath is interposed an elastomer layer (25) which ensures a sufficient pressing of the material into the different briquette cavities.

Description

Dans le moulage automatique de briquettes en granulats et ciment, le dosage du mélange humide s'effectue normalement en prélevant d'une cuve circulaire la quantité souhaitée au moyen de godets le plus souvent cylindriques et munis d'obturateurs. Dans cette cuve, le matériau est introduit déjà mélangé, et un mélangeur - équipé de pales et de racleurs - a pour fonction d'empêcher que le matériau ne se dépose.In the automatic molding of aggregates and cement briquettes, the dosing of the wet mixture is normally carried out by taking from a tank circular the desired quantity by means of buckets most often cylindrical and fitted with shutters. In this tank, the material is introduced already mixed, and a mixer - equipped with blades and scrapers - has for function of preventing material from settling.

Lorsque les moules, et donc les bâtis, sont multiples (à quatre ou six ou neuf cavités), les godets doseurs viennent prélever le matériau dans la cuve à des distances différentes du centre de rotation ; pour cette raison et du fait d'un facteur aléatoire, bien que l'on remplisse entièrement les godets (et donc que l'on ait des volumes même parfaitement égaux), on n'est pas en mesure de garantir que les pourcentages des différents composants du mélange restent égaux dans chaque godet individuel et donc dans tous les compartiments ou cavités du moule multiple. Il peut donc arriver que les godets soient remplis avec des quantités d'eau différentes et avec des écarts entre les différents composants du mélange.When the molds, and therefore the frames, are multiple (four or six or nine cavities), the measuring cups come to take the material in the tank different distances from the center of rotation; for this reason and the fact by a random factor, even though the cups are completely filled (and therefore that we have volumes even perfectly equal), we are not able to guarantee that the percentages of the different components of the mixture remain equal in each individual well and therefore in all multiple mold compartments or cavities. It may therefore happen that the buckets are filled with different amounts of water and with gaps between the different components of the mixture.

Lorsque l'on moule des briquettes à deux couches, le problème est partiellement et suffisamment réduit du fait de la présence de la seconde couche semi-sèche, de la plus grande hauteur des briquettes et de la moindre pression de moulage. Le problème devient plus grave lorsque l'on moule des briquettes "monocouche" (c'est-à-dire avec une seule couche humide) de faible épaisseur, et pressées sous forte pression.When you are baking two-layer briquettes, the problem is partially and sufficiently reduced due to the presence of the second semi-dry layer, the greatest height of the briquettes and the least molding pressure. The problem becomes more serious when you mold "monolayer" briquettes (ie with a single wet layer) of thin, and pressed under high pressure.

L'invention résout ce problème avec des moyens simples et économiques. Ceux-ci ainsi que d'autres buts et avantages ressortent à l'évidence du texte qui suit.The invention solves this problem with simple and economic. These and other goals and benefits are apparent to the evidence from the following text.

L'invention concerne donc un système de compensation et en tout cas de limitation des erreurs de dosage dans les cavités de moules multiples de presses pour briquettes en ciment, en particulier du type monocouche, qui comportent une plaque de pression sous laquelle sont appliqués plusieurs tampons. Suivant l'invention il est prévu une couche élastomère associée à chaque tampon qui assure un pressage suffisant de la matière dans les différentes cavités, même en présence de différences limitées de dosage et de composition du mélange dans les différentes cavités.The invention therefore relates to a compensation system and in any case for limiting dosing errors in multiple mold cavities of cement briquette presses, in particular of the monolayer type, which have a pressure plate under which several buffers. According to the invention there is provided an elastomer layer associated with each pad which ensures sufficient pressing of the material in the different cavities, even in the presence of limited differences in dosage and composition of the mixture in the different cavities.

Dans une forme de réalisation avantageuse - compte tenu des pressions élevées de fonctionnement - à chaque tampon est associée une structure qui comporte deux plaques entre lesquelles est interposée ladite couche élastomère et sur lesquelles est vulcanisée cette couche élastomère. Pour des raisons de sécurité, les deux plaques sont reliées mécaniquement au moyen de vis ou similaires, afin de maintenir la liaison même dans le cas où la vulcanisation céderait.In an advantageous embodiment - taking into account high operating pressures - each buffer is associated with a structure which comprises two plates between which is interposed said elastomer layer and on which this elastomer layer is vulcanized. For safety reasons, the two plates are mechanically connected to the means of screws or the like, in order to maintain the connection even in the case where the vulcanization would give way.

Les épaisseurs élastomères peuvent être interposées entre chaque tampon et la plaque de pression qui porte lesdits tampons ou entre chaque tampon et la plaque terminale du tampon lui-même, laquelle entre en contact avec la matière à presser.The elastomeric thicknesses can be interposed between each buffer and the pressure plate which carries said buffers or between each pad and the pad end plate itself, which comes into contact with the material to be pressed.

Chaque couche élastomère peut présenter périphériquement un creux qui compense le gonflement provoqué dans la matière élastomère pendant l'opération de pression.Each elastomer layer may have a hollow peripherally which compensates for the swelling caused in the elastomeric material during the pressure operation.

Le dessin montre une forme de réalisation possible de l'invention, dans une vue en coupe verticale, en position de tampon soulevé.The drawing shows a possible embodiment of the invention, in a vertical section view, in the raised buffer position.

Sur la figure unique, la référence 1 désigne la base, c'est-à-dire le fond du moule, sur lequel repose le bâti 3, pour définir une pluralité de cavités 5 dont deux sont visibles sur le dessin. Dans la cavité 5 sont versées des quantités de matière nécessaires pour mouler les briquettes M, à chaque opération de compression. Ces quantités ne sont pas toujours égales dans leur dosage et leur composition, ce qui provoque des différences dans le pressage des briquettes et différentes structures de celles-ci. La référence 7 désigne la plaque de pression qui est abaissée par la presse pour faire pénétrer dans les cavités 5 les tampons 9 équipés des plaques terminales 11 correspondantes, qui forment les surfaces qui entrent en contact avec la matière à presser pour former les briquettes M.In the single figure, the reference 1 designates the base, that is to say the bottom of the mold, on which the frame 3 rests, to define a plurality of cavities 5 two of which are visible in the drawing. In the cavity 5 are poured quantities of material required to mold M briquettes, each compression operation. These quantities are not always equal in their dosage and composition, which causes differences in the pressing of briquettes and different structures thereof. Reference 7 designates the pressure plate which is lowered by the press to make penetrate into the cavities 5 the buffers 9 fitted with the end plates 11 corresponding, which form the surfaces which come into contact with the material to be pressed to form the briquettes M.

Afin de maintenir dans des limites acceptables les différences de pression dans les différentes cavités 5 - pour les raisons indiquées ci-dessus - il est prévu, suivant le dessin, d'insérer un ensemble sandwich 13 élastique entre la plaque de pression 7 (qui s'abaisse) et chacun des tampons rigides 9. L'ensemble 13 peut aussi être inséré - en variante - entre chaque tampon 9 et la plaque 11 correspondante ; dans ce cas, le tampon est fixé rigidement à la plaque 11.In order to keep the differences in pressure in the different cavities 5 - for the reasons indicated above - it is planned, according to the drawing, to insert an elastic sandwich assembly 13 between the pressure plate 7 (which lowers) and each of the rigid pads 9. The assembly 13 can also be inserted - as a variant - between each buffer 9 and the corresponding plate 11; in this case, the pad is rigidly attached to the plate 11.

L'ensemble sandwich 13 s'obtient en vulcanisant une couche 13A élastomère entre deux plaques 13B et 13C convenablement préparées en surface afin d'obtenir un ancrage solide entre les plaques elles-mêmes et l'élastomère 13A.The sandwich assembly 13 is obtained by vulcanizing a layer 13A elastomer between two plates 13B and 13C suitably prepared in surface in order to obtain a solid anchorage between the plates themselves and elastomer 13A.

Sur la plaque de pression 7 sont pratiqués des trous 15 pour des vis 15A de fixation de la plaque 13B à la plaque de pression 7 ; on prévoit aussi des trous pour des doigts d'indexation 17 entre la plaque de pression 7 et les plaques 13B, ainsi que des trous débouchants 19 (qui dépassent des plaques 13C et atteignent le tampon 9), pour le passage de vis de sécurité 19A qui parviennent jusqu'au tampon 9 et le traversent pour le relier mécaniquement à la plaque de pression 7, avec un jeu par rapport à l'ensemble 13 ; ceci est utile dans l'éventualité où la couche élastomère 13A se détache de l'une ou des deux plaques 13B et/ou 13C. Entre la plaque 13C et le tampon 9 sont prévus des moyens de fixation avec les tiges 21 ancrées dans la plaque 13C et des écrous 21A qui réagissent dans des sièges ménagés dans le tampon 9. Sont prévus aussi des trous pour des doigts d'indexation 23 pour les plaques 13C et le tampon 9.Holes 15 are made on the pressure plate 7 for screw 15A for fixing the plate 13B to the pressure plate 7; we are planning also holes for indexing fingers 17 between the pressure plate 7 and the plates 13B, as well as through holes 19 (which protrude from plates 13C and reach the buffer 9), for the passage of security screws 19A which reach buffer 9 and cross it to connect it mechanically to pressure plate 7, with play with respect to the set 13; this is useful in the event that the 13A elastomer layer detachment from one or both plates 13B and / or 13C. Between plate 13C and the buffer 9 are provided for fixing means with the rods 21 anchored in plate 13C and nuts 21A which react in seats provided in buffer 9. There are also finger holes indexing 23 for plates 13C and buffer 9.

Lorsque l'on moule des briquettes "monocouche", la pression spécifique de moulage est d'environ 200 kg/cm2. L'élastomère 13A de l'ensemble sandwich 13 a été conçu pour subir un écrasement d'environ 1 mm, dans les conditions mentionnées ci-dessus. Dans le cas où l'on utilise un moule à six cavités 5 et dans le cas où le dosage du mélange est parfait, dans chaque cavité 5 l'ensemble sandwich est comprimé d'environ 1 mm.When "single-layer" briquettes are molded, the specific molding pressure is approximately 200 kg / cm 2 . The elastomer 13A of the sandwich assembly 13 was designed to undergo a crushing of approximately 1 mm, under the conditions mentioned above. In the case where a six-cavity mold 5 is used and in the case where the dosage of the mixture is perfect, in each cavity 5 the sandwich assembly is compressed by approximately 1 mm.

Des contrôles effectués sur différentes machines ont montré que les erreurs de dosage et de composition que l'on peut avoir dans des moules à plusieurs cavités, se traduisent par des différences d'épaisseur que l'on peut estimer limitées à environ 2/10 mm. Si sous charge on a une flèche de 10/10 mm, la variation de compactage entre la briquette avec un plus grand dosage et celle avec un dosage moindre se réduit à 1/5 seulement du total et on a donc des variations de l'opération de pression qui sont acceptables. Une courbure concave 25 particulière est prévue périphériquement sur l'élastomère 13A ; cette courbure permet d'éviter que l'élastomère ne tende à se détacher des plaques sous charge, en particulier dans les zones intermédiaires des côtés, dans la périphérie. Checks carried out on different machines have shown that the dosing and composition errors that may occur in molds several cavities, result in differences in thickness that can be estimate limited to about 2/10 mm. If under load we have an arrow 10/10 mm, the variation in compaction between the briquette with a greater dosage and that with a lower dosage is reduced to only 1/5 of the total and there are therefore variations in the pressure operation which are acceptable. A particular concave curvature 25 is provided peripherally on elastomer 13A; this curvature prevents the elastomer from tending to detach from plates under load, especially in areas intermediaries on the sides, in the periphery.

Le système de compensation décrit ci-dessus peut s'appliquer aussi au moulage de briquettes à double couche ou d'autres produits agglomérés. Dans ces cas, il faudra adapter l'élasticité de l'élastomère, en tenant compte des pressions de moulage spécifiques à chaque cas.The compensation system described above can also be applied to molding of double layer briquettes or other agglomerated products. In these cases, it will be necessary to adapt the elasticity of the elastomer, taking into account the molding pressures specific to each case.

Il est bien entendu que le dessin ne représente qu'un exemple fourni seulement à titre de démonstration pratique de l'invention, cette invention pouvant varier dans les formes et dispositions sans toutefois sortir du cadre du concept de l'invention elle-même.It is understood that the drawing represents only an example provided only as a practical demonstration of the invention, this invention may vary in forms and provisions without however departing from the scope of the concept of the invention itself.

Claims (8)

Système de compensation d'erreurs de dosage dans les cavités de moules multiples de presses pour briquettes en ciment, en particulier de type monocouche, avec plaque de pression (7) sous laquelle sont appliqués plusieurs tampons (9), caractérisé en ce qu'il comporte une couche élastomère associée à chaque tampon qui assure un pressage suffisant de la matière dans les différentes cavités.Compensation system for dosing errors in the multiple mold cavities of presses for cement briquettes, in particular of the monolayer type, with pressure plate (7) under which several buffers (9) are applied, characterized in that it has an elastomeric layer associated with each pad which ensures sufficient pressing of the material in the different cavities. Système de compensation selon la revendication 1, caractérisé en ce qu'à chaque tampon (9) est associée une structure comprenant deux plaques entre lesquelles ladite couche élastomère est interposée (en sandwich) et sur lesquelles ladite couche élastomère est vulcanisée.Compensation system according to claim 1, characterized in that each pad (9) is associated with a structure comprising two plates between which said elastomer layer is interposed (sandwiched) and on which said elastomer layer is vulcanized. Système de compensation selon la revendication 2, caractérisé en ce que les deux plaques sont reliées entre elles mécaniquement, par des vis ou similaires.Compensation system according to claim 2, characterized in that the two plates are connected to each other mechanically, by screws or the like. Système de compensation selon l'une quelconque des revendications 1, 2 ou 3, caractérisé en ce que lesdites couches élastomères sont interposées entre chaque tampon (9) et la plaque de pression (7) qui porte lesdits tampons (9).Compensation system according to any one of claims 1, 2 or 3, characterized in that said elastomeric layers are interposed between each pad (9) and the pressure plate (7) which carries said pads (9). Système de compensation selon l'une quelconque des revendications 1, 2 ou 3, caractérisé en ce que lesdites couches élastomères sont interposées entre chaque tampon et la plaque terminale qui entre en contact avec la matière à presser.Compensation system according to any one of claims 1, 2 or 3, characterized in that said elastomeric layers are interposed between each pad and the end plate which comes into contact with the material to be pressed. Système de compensation selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comprend des vis (19A) qui traversent l'ensemble (13) comprenant l'élastomère (13A) et qui relient mécaniquement entre eux les composants du moule, même dans le cas où l'élastomère se détache de l'une de ces plaques.Compensation system according to any one of Claims 1 to 4, characterized in that it comprises screws (19A) which pass through the assembly (13) comprising the elastomer (13A) and which mechanically connect the components of the mold, even in the case where the elastomer is detached from one of these plates. Système de compensation selon la revendication 1, caractérisé en ce que chaque couche élastomère présente périphériquement un creux qui compense le gonflement provoqué dans la matière élastomère par l'opération de pression.Compensation system according to claim 1, characterized in that each elastomeric layer has peripherally a recess which compensates for the swelling caused in the elastomeric material by the pressing operation. Système de compensation des erreurs de dosage sur des presses pour briquettes à plusieurs cavités, en particulier pour briquettes monocouche ou similaires ; le tout comme décrit et représenté à titre d'exemple sur le dessin annexé.Compensation system for dosing errors on presses for briquettes with several cavities, in particular for single-layer briquettes or the like; all as described and shown by way of example in the drawing Annex.
EP20020425135 2001-03-16 2002-03-11 System for the compensation of dosing errors in multi-cavity briquetting presses en particulier for single-layer briquettes or the like Expired - Lifetime EP1240998B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI20010043 ITFI20010043A1 (en) 2001-03-16 2001-03-16 DOSING ERRORS COMPENSATION SYSTEM ON PRESSES FOR MULTIPLE IMPRESSION TILES, ESPECIALLY FOR SINGLE-LAYER OR SIMILAR TILES
ITFI010043 2001-03-16

Publications (3)

Publication Number Publication Date
EP1240998A2 true EP1240998A2 (en) 2002-09-18
EP1240998A3 EP1240998A3 (en) 2003-07-09
EP1240998B1 EP1240998B1 (en) 2005-09-28

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EP (1) EP1240998B1 (en)
DE (1) DE60206311T2 (en)
ES (1) ES2246383T3 (en)
IT (1) ITFI20010043A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20121558A1 (en) * 2012-09-19 2014-03-20 Martinelli Ettore Srl DIE FOR TILES AND THE LIKE
EP2990192A1 (en) * 2014-08-27 2016-03-02 Benteler Automobiltechnik GmbH Pressure forming tool with tolerance compensation
IT202000016021A1 (en) * 2020-07-02 2022-01-02 Millutensil S R L PRESSING APPARATUS

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US1546376A (en) * 1925-04-11 1925-07-21 Atlas Powder Co Device for insuring uniform pressure upon explosive charges
FR919258A (en) * 1945-12-21 1947-03-04 Westinghouse Electric Corp Balancing device for multiple punch press
FR1098744A (en) * 1954-01-29 1955-08-18 Alsacienne D Explosifs Et D Ap Device for pressure balancing in a multiple punch press
US4401614A (en) * 1981-09-08 1983-08-30 Ptx-Pentronix, Inc. Anvil assembly for a powder-compacting anvil press
US4959003A (en) * 1987-02-23 1990-09-25 Kvm Industrimaskiner A/S Device for die-casting of concrete goods such as block stones in a cellular mould

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1546376A (en) * 1925-04-11 1925-07-21 Atlas Powder Co Device for insuring uniform pressure upon explosive charges
FR919258A (en) * 1945-12-21 1947-03-04 Westinghouse Electric Corp Balancing device for multiple punch press
FR1098744A (en) * 1954-01-29 1955-08-18 Alsacienne D Explosifs Et D Ap Device for pressure balancing in a multiple punch press
US4401614A (en) * 1981-09-08 1983-08-30 Ptx-Pentronix, Inc. Anvil assembly for a powder-compacting anvil press
US4959003A (en) * 1987-02-23 1990-09-25 Kvm Industrimaskiner A/S Device for die-casting of concrete goods such as block stones in a cellular mould

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20121558A1 (en) * 2012-09-19 2014-03-20 Martinelli Ettore Srl DIE FOR TILES AND THE LIKE
WO2014045149A1 (en) * 2012-09-19 2014-03-27 Martinelli Ettore Srl Mold for forming tiles and the like
EP2990192A1 (en) * 2014-08-27 2016-03-02 Benteler Automobiltechnik GmbH Pressure forming tool with tolerance compensation
CN105382098A (en) * 2014-08-27 2016-03-09 本特勒尔汽车技术有限公司 Press-forming tool with tolerance compensation
US10322443B2 (en) 2014-08-27 2019-06-18 Benteler Automobiltechnik Gmbh Press-forming tool with tolerance compensation
IT202000016021A1 (en) * 2020-07-02 2022-01-02 Millutensil S R L PRESSING APPARATUS
WO2022003746A1 (en) * 2020-07-02 2022-01-06 Millutensil S.R.L. Pressing apparatus

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EP1240998B1 (en) 2005-09-28
ES2246383T3 (en) 2006-02-16
DE60206311T2 (en) 2006-06-29
ITFI20010043A1 (en) 2002-09-16
EP1240998A3 (en) 2003-07-09
DE60206311D1 (en) 2006-02-09

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