EP0433591A2 - Hochleistungsverfahren und -vorrichtung zum Formen von Betonblöcken hoher Massgenauigkeit - Google Patents

Hochleistungsverfahren und -vorrichtung zum Formen von Betonblöcken hoher Massgenauigkeit Download PDF

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Publication number
EP0433591A2
EP0433591A2 EP90119445A EP90119445A EP0433591A2 EP 0433591 A2 EP0433591 A2 EP 0433591A2 EP 90119445 A EP90119445 A EP 90119445A EP 90119445 A EP90119445 A EP 90119445A EP 0433591 A2 EP0433591 A2 EP 0433591A2
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EP
European Patent Office
Prior art keywords
moulds
concrete mix
concrete
pouring
bank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90119445A
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English (en)
French (fr)
Other versions
EP0433591A3 (en
Inventor
Ariodante Ferrari
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.)
FEAR SpA
Original Assignee
FEAR SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FEAR SpA filed Critical FEAR SpA
Publication of EP0433591A2 publication Critical patent/EP0433591A2/de
Publication of EP0433591A3 publication Critical patent/EP0433591A3/en
Withdrawn legal-status Critical Current

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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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation
    • B28B7/241—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces
    • 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • 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
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials of plastic material or rubber

Definitions

  • This invention relates to a method and means for forming blocks from concrete mix, in particular blocks used as inertial masses in household electrical appliances.
  • washing machines require for containing the rotary drum a tub which has a considerable inertial mass in order to provide stability to the structure in the face of the vibration induced by the rotation of an unbalanced mass (represented by the drum when containing the clothes, especially during spinning).
  • Dishwashers require to be weighted to prevent their movement when opening the door or extracting the dish basket.
  • the blocks In these and other mechanical applications involving cement (generally associated with ferrous and baritic minerals to increase the specific gravity) the blocks generally need to be fixed by bolts or pre-positioned reference elements, requiring dimensional tolerances which are difficult to respect. This is because the usual methods for forming such blocks lead to irregular shapes not only in terms of the level of surface finish but also in dimensional terms.
  • the said method usually results in a very low production rate with high consequent costs as each individual block has to be constructionally handled by an operator and be treated by a mould vibration machine.
  • This characteristic of the method usually makes it necessary to shorten the time for vibration-compacting the mix in the mould, so resulting in a concrete block of poor quality.
  • the poor quality of blocks produced in this manner is also determined by the presence of burrs which continuously increase because of the rapid mould wear along the joining line between the moulds, and induce handling difficulties as they can injure the hands of the operator handling such blocks (for example during their assembly and during the repair of the resultant household electrical appliances).
  • An object of the present invention is to provide a method and means for forming blocks from concrete mix which result in a higher production rate than conventional methods.
  • a further object is to provide a method and means which enable blocks to be formed with high dimensional precision.
  • a further object is to provide concrete blocks, particularly for use as inertial masses for mechanical applications (washing machines, dishwashers etc.), which are very economical.
  • Figure 1 is a side view of a block production plant in which the perimetral walls of the containing tray are shown sectioned on a central plane;
  • Figure 2 is a perspective view of the parts of the plant
  • Figure 3 is a section through a mould showing a concrete block under formation by cooperation with an adjacent half-mould
  • Figure 4 is a perspective view of a mould resting on two longitudinal members
  • Figure 5 is a perspective section through a filling hopper resting on a line of moulds.
  • a fixed frame 1 comprises feet 1A for its support on a floor 2.
  • This fixed frame comprises robust longitudinal members 1B and uprights 1C, 1C'.
  • the longitudinal members are preferably two in number to form a track 1B', 1B" ( Figure 2) on which the moulds 3 can rest securely.
  • moulds each consist of two shells 3A and 3B ( Figures 2, 4) joined together by bolts 4, possibly acting via stiffening strips 5.
  • the shells 3A and 3B are joined together at their base by two support brackets 6A and 6B formed from steel angle sections. These brackets comprise projections 6B' and 6B" the purpose of which is to transversely retain the mould shells by being interposed between the two longitudinal member 1B' and 1B".
  • These shells are constructed of anti-adherent plastics material such as polyethylene, polypropylene, or other known equivalent materials. These shells could however be constructed of plastics material which is not necessarily anti-adherent but is instead surface-coated with anti-adherent material such as polyethyleneterephthalate (PTFE).
  • PTFE polyethyleneterephthalate
  • plastics shells can be injection-moulded.
  • they can be of small thickness, combinable with stiffening ribs, and comprise special shaped portions 8A, 8B to form a comfortable fixing or positioning for mechanical inserts 7 which also provide a strengthening function.
  • certain regions of the inserts 7 can be made accessible from the outside of the block to enable it to be fixed to a structure by bolts or the like, obviously after the block with its inserts has been removed from its mould.
  • Figure 3 shows ideally a concrete block in the form of an irregular ring with its "hole” formed by the two shaped portions 8A and 8B, which have flat ends facing each other to press against the insert interposed between them.
  • the metal inserts are very simple to position and/or retain, not only by centering or mounting on usual pegs in the half-mould 3B, but also by magnets 27 inserted into the rear of the impression to retain the iron insert before it is finally fixed by the action of the adjacent mould 3A.
  • FIG. 3 shows a mould 3A-3B' in contact with a half-mould 3B to define a ring-shaped concrete block 10.
  • This mould is formed from two different shells 3A, 3B' joined together by bolts 4.
  • the front and rear surfaces of the mould 3 can be made to mate with the rear and front surfaces respectively of other moulds 3 by special fitting elements or by simple engagement between the pegs 11 and holes 12.
  • This mating operation is effected in such a manner as not only to properly seal the parts together and prevent the formation of burrs along their joining line, but also to provide centering or coaxiality between the moulds so that the shape defined by them is correct, and in addition to mechanically rigidify and thus retain the set of aligned moulds in the transverse direction.
  • the moulds 3 are rested (possibly via their brackets 6A and 6B of Figure 4) on the longitudinal members 1B' and 1B", and are moved up alongside each other into mutual contact to form a very long row of moulds.
  • This row or line of moulds 13 can be flanked by other parallel lines 13 of moulds 3 to include overall even thousands of moulds (only one row is shown on the drawings).
  • Each row of moulds is rested via an end half-mould 3 against a first fixed shoulder 14A.
  • presser plate 15 can compress the whole row 13 to maintain all its constituent moulds in strong closure contact.
  • the presser plate 15 is initially operated by a hydraulic thrust piston, after which, when the position of maximum contact between the moulds 3 has been attained, struts 17A, 17B are interposed between a second fixed shoulder 14B and the presser plate 15, to maintain the maximum contact position previously attained by the hydraulic piston 16.
  • the hydraulic piston 16 which reacts against or is fixed to the fixed structure 1, for example via the second fixed shoulder 14B, can then be disengaged.
  • Figure 1 it is shown in its disengaged position.
  • This perimetral frame forms a tray about a series of holes or slots 21 present in the upper faces of the moulds 3 and communicating with the space for the block to be moulded.
  • intersection between the holes and the surface 18 is represented by a flat surface on the block when it is removed from the mould.
  • these holes conceptually represent the mould feed sprue, but this sprue is generally so short as to be represented by a mere flat surface on the casting.
  • the concrete mix Z is poured into the parallelepiped tray 18, 19 and flows via the various holes 21 into the various mould cavities, so filling them. This filling is facilitated by a raking action using manually or mechanically operated blades to shift the concrete mix so that the holes receive that concrete mix lying on the remaining upper flat surface of the moulds.
  • a hopper-shaped tray 22 is used resting via gaskets 23 on the plurality of moulds 3D, at the ends of slots 21A ( Figure 5).
  • the hopper 22 is able to slide along the row of moulds, so that it also performs the said raking function, especially if the hopper is provided with transverse sheet metal baffles 24 used to strengthen the hopper.
  • the filling stage also comprises continuous or intermittent vibration.
  • the concrete mix contained in the moulds is then compacted. This is done by vibrating the line of moulds 13 for a time indicatively between 3 and 10 minutes by vertically vibrating the longitudinal members 1B (1B', 1B") on which the mould assembly rests.
  • This oscillation is implemented by usual vibrators 26 operating with known and currently used methods for regulating amplitude and frequency to the required acceleration values.
  • the purpose of this vibration stage is not only to compact, but also to define the surface state of the casting under formation.
  • the concrete mix indicatively composed of 40% of water, 16% of cement and the remainder of solids of a certain size, such as the small stones typically found in sand, iron scale or other minerals of high specific gravity (barite) generally used in this type of inertial block production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Revetment (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Retaining Walls (AREA)
EP19900119445 1989-12-22 1990-10-10 Method and means for forming blocks from concrete mix at a high production rate and with high shape definition, and the product obtained Withdrawn EP0433591A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2963A IT1239293B (it) 1989-12-22 1989-12-22 Metodo e mezzi realizzatori di blocchi in impasto cementizio ad elevata produttivita' e ad elevata definizione di forma e prodotto
IT296389 1989-12-22

Publications (2)

Publication Number Publication Date
EP0433591A2 true EP0433591A2 (de) 1991-06-26
EP0433591A3 EP0433591A3 (en) 1991-11-27

Family

ID=11104263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900119445 Withdrawn EP0433591A3 (en) 1989-12-22 1990-10-10 Method and means for forming blocks from concrete mix at a high production rate and with high shape definition, and the product obtained

Country Status (7)

Country Link
EP (1) EP0433591A3 (de)
BG (1) BG60026B2 (de)
CS (1) CS277660B6 (de)
HU (1) HU211366B (de)
IT (1) IT1239293B (de)
PL (1) PL166270B1 (de)
YU (1) YU242690A (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579571A1 (de) * 1992-07-14 1994-01-19 Jose Cantos-Torro Verfahren zum Herstellen, Härten, Schützen, Transportieren von Geländersäulen aller Art
US5972175A (en) * 1998-07-24 1999-10-26 Governors Of The University Of Alberta Catalytic microwave conversion of gaseous hydrocarbons
US6557818B2 (en) * 1999-09-30 2003-05-06 Redi-Rock International, Llc Form for manufacturing concrete retaining wall blocks
US6854702B2 (en) 1999-09-30 2005-02-15 Redi-Rock International, Llc Form for manufacturing concrete blocks for freestanding walls
WO2006063940A1 (en) * 2004-12-15 2006-06-22 Dario Toncelli Rubber-based mould use for the production of slabs of agglomerated stone material and method for the manufacture thereof
WO2008025984A1 (en) * 2006-09-01 2008-03-06 Lafarge Roofing Technical Centers Ltd Method and plant for forming a concrete building product
CN106738229A (zh) * 2017-03-26 2017-05-31 林键 一种便于脱模的土木建筑施工用的组装式试模
CN105666661B (zh) * 2016-01-20 2017-12-26 广东科达洁能股份有限公司 一种用于自动化生产菱镁砖的模具
CN108818895A (zh) * 2018-07-16 2018-11-16 浙江省二建建设集团有限公司 细骨料混凝土的余料处理装置及其处理方法
CN109079969A (zh) * 2018-09-19 2018-12-25 枣庄启程机械科技有限公司 预埋有门窗的新型墙体生成***及生成方法
CN110281347A (zh) * 2019-08-08 2019-09-27 中国建筑第七工程局有限公司 一种施工现场小型混凝土预制块制作方法
CN111002442A (zh) * 2019-11-14 2020-04-14 泰州普利策新材料科技有限公司 一种带有磁力夹的可调性平浇扶壁模板
CN111231085A (zh) * 2020-01-20 2020-06-05 广东萨米特陶瓷有限公司 一种组合模口对位定位布料***及使用方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108556130A (zh) * 2018-03-16 2018-09-21 中建八局第建设有限公司 一种水泥预制块自动浇制装置
CN110744703B (zh) * 2019-10-28 2021-03-19 浙江中清大建筑产业化有限公司 一种竖向提料立模生产预制剪力墙的生产设备及生产方法
CN117325278B (zh) * 2023-10-27 2024-03-22 安徽空间智筑技术有限公司 一种多功能全自动混凝土支撑装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR487649A (fr) * 1917-01-23 1918-07-17 Paul Florian Richard Système de moules pour le coulage en barbotine d'objets en porcelaine, faience, grès fins, poterie fine, etc
US2253730A (en) * 1927-11-03 1941-08-26 Seailles Jean Charles Process of molding concrete
US2596602A (en) * 1948-05-17 1952-05-13 Jr Walter B Roddenbery Molding machine
GB1279297A (en) * 1969-06-24 1972-06-28 Howmet Corp Ceramic gang mold
DE2149600A1 (de) * 1971-10-05 1973-04-12 Heidelberg Portland Zement Ester-zusatzmittel zum verfluessigen von beton und moertel, verfahren zu deren herstellung, sowie deren anwendung
FR2299949A1 (fr) * 1975-02-08 1976-09-03 Stamicarbon Fabrication de pieces moulees dans un moule a partir d'un mortier de ciment
SU898002A1 (ru) * 1980-03-04 1982-01-15 Государственный Дорожный Научно-Исследовательский Институт Устройство дл креплени закладных деталей в форме
FR2531657A1 (fr) * 1982-08-13 1984-02-17 Aubert J Installation pour le moulage en continu des produits creux en beton

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU37726A1 (de) *

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR487649A (fr) * 1917-01-23 1918-07-17 Paul Florian Richard Système de moules pour le coulage en barbotine d'objets en porcelaine, faience, grès fins, poterie fine, etc
US2253730A (en) * 1927-11-03 1941-08-26 Seailles Jean Charles Process of molding concrete
US2596602A (en) * 1948-05-17 1952-05-13 Jr Walter B Roddenbery Molding machine
GB1279297A (en) * 1969-06-24 1972-06-28 Howmet Corp Ceramic gang mold
DE2149600A1 (de) * 1971-10-05 1973-04-12 Heidelberg Portland Zement Ester-zusatzmittel zum verfluessigen von beton und moertel, verfahren zu deren herstellung, sowie deren anwendung
FR2299949A1 (fr) * 1975-02-08 1976-09-03 Stamicarbon Fabrication de pieces moulees dans un moule a partir d'un mortier de ciment
SU898002A1 (ru) * 1980-03-04 1982-01-15 Государственный Дорожный Научно-Исследовательский Институт Устройство дл креплени закладных деталей в форме
FR2531657A1 (fr) * 1982-08-13 1984-02-17 Aubert J Installation pour le moulage en continu des produits creux en beton

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Week 48, 19 January 1983 Abstract nr A5090 J/48 Derwent Publications Ltd., London GB & SU-A-898002 (UKR AUTO ROAD CONS) 25-01-1982 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579571A1 (de) * 1992-07-14 1994-01-19 Jose Cantos-Torro Verfahren zum Herstellen, Härten, Schützen, Transportieren von Geländersäulen aller Art
US5972175A (en) * 1998-07-24 1999-10-26 Governors Of The University Of Alberta Catalytic microwave conversion of gaseous hydrocarbons
US6557818B2 (en) * 1999-09-30 2003-05-06 Redi-Rock International, Llc Form for manufacturing concrete retaining wall blocks
US6854702B2 (en) 1999-09-30 2005-02-15 Redi-Rock International, Llc Form for manufacturing concrete blocks for freestanding walls
WO2006063940A1 (en) * 2004-12-15 2006-06-22 Dario Toncelli Rubber-based mould use for the production of slabs of agglomerated stone material and method for the manufacture thereof
WO2008025984A1 (en) * 2006-09-01 2008-03-06 Lafarge Roofing Technical Centers Ltd Method and plant for forming a concrete building product
CN105666661B (zh) * 2016-01-20 2017-12-26 广东科达洁能股份有限公司 一种用于自动化生产菱镁砖的模具
CN106738229A (zh) * 2017-03-26 2017-05-31 林键 一种便于脱模的土木建筑施工用的组装式试模
CN108818895A (zh) * 2018-07-16 2018-11-16 浙江省二建建设集团有限公司 细骨料混凝土的余料处理装置及其处理方法
CN109079969A (zh) * 2018-09-19 2018-12-25 枣庄启程机械科技有限公司 预埋有门窗的新型墙体生成***及生成方法
CN110281347A (zh) * 2019-08-08 2019-09-27 中国建筑第七工程局有限公司 一种施工现场小型混凝土预制块制作方法
CN111002442A (zh) * 2019-11-14 2020-04-14 泰州普利策新材料科技有限公司 一种带有磁力夹的可调性平浇扶壁模板
CN111002442B (zh) * 2019-11-14 2021-03-30 泰州普利策新材料科技有限公司 一种带有磁力夹的可调性平浇扶壁模板
CN111231085A (zh) * 2020-01-20 2020-06-05 广东萨米特陶瓷有限公司 一种组合模口对位定位布料***及使用方法

Also Published As

Publication number Publication date
YU242690A (sh) 1994-09-09
HU211366B (en) 1995-11-28
PL288399A1 (en) 1991-07-15
BG60026B2 (en) 1993-07-30
PL166270B1 (pl) 1995-04-28
CS657990A3 (en) 1992-08-12
IT1239293B (it) 1993-10-19
CS277660B6 (en) 1993-03-17
IT8902963A0 (it) 1989-12-22
HU908298D0 (en) 1991-06-28
HUT58586A (en) 1992-03-30
EP0433591A3 (en) 1991-11-27

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