EP0078586A1 - Dispositif pour fabriquer des bandes de pierre ou analogue - Google Patents

Dispositif pour fabriquer des bandes de pierre ou analogue Download PDF

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Publication number
EP0078586A1
EP0078586A1 EP82201378A EP82201378A EP0078586A1 EP 0078586 A1 EP0078586 A1 EP 0078586A1 EP 82201378 A EP82201378 A EP 82201378A EP 82201378 A EP82201378 A EP 82201378A EP 0078586 A1 EP0078586 A1 EP 0078586A1
Authority
EP
European Patent Office
Prior art keywords
moulds
mould
station
filling
concrete mixture
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
EP82201378A
Other languages
German (de)
English (en)
Other versions
EP0078586B1 (fr
Inventor
Jan Hendrik Veldhoen
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.)
Veldhoen Arend Johan
Veldhoen George Gustaaf
Original Assignee
Veldhoen Arend Johan
Veldhoen George Gustaaf
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 Veldhoen Arend Johan, Veldhoen George Gustaaf filed Critical Veldhoen Arend Johan
Priority to AT82201378T priority Critical patent/ATE14694T1/de
Publication of EP0078586A1 publication Critical patent/EP0078586A1/fr
Application granted granted Critical
Publication of EP0078586B1 publication Critical patent/EP0078586B1/fr
Expired 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
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/42—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for heating or cooling, e.g. steam jackets, by means of treating agents acting directly on the moulding material
    • 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
    • B28B3/028—Centering the press head, e.g. using guiding pins or chamfered mould edges
    • 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
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
    • B28B5/021—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of definite length
    • 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
    • B28B7/06—Moulds with flexible parts

Definitions

  • the invention relates to a method for producing stone strips or the like, wherein a plurality of moulds are filled with a concrete mixture and the formed stone strips, after at least partially setting of the concrete mixture, are released from the moulds, and aims to provide an efficient method of this type, by means of which such stone strips can be economically produced in serial production.
  • the method according to the invention is characterized in that the moulds are continuously transported along a closed path passing a filling station having supply means for the concrete mixture, in which the moulds are filled with the concrete mixture, after which the moulds pass through a setting distance and arrive at a release station, in which the stone strips are released from the moulds, while the moulds are conveyed through a heating distance for heating the moulds between the release station and filling station.
  • the moulds have a relatively high temperature when they are filled with the concrete mixture, whereby the setting process of the concrete mixture can be substantially accelerated, so that the formed stone strips are sufficiently setted after a short time period to be released from the moulds.
  • the moulds are heated up to a temperature of at least 50°C. In this manner the formed stone strip can already be released from the mould after 120-420 s when a suitable concrete mixture is used.
  • the invention relates to an apparatus for performing the above-described method, said apparatus according to the invention being characterized in that a transport means is supported in a closed path by a frame, which transport means carries a plurality of moulds disposed at mutually equal spacings, wherein a filling station is mounted at the path of the transport means, having supply means for filling the moulds with the concrete mixture, while a release station is disposed at the path of the transport means, having means for releasing the moulds, wherein a setting distance lies between the filling station and the release station and a heating distance is provided between the release station and the filling station.
  • the heating distance is formed by a trough disposed beneath a part of the path of the transport means, said trough containing a heated liquid, in which the moulds are immersed in an open position during the passage through the heating distance.
  • the filling station and the release station are mounted on the frame backwardly and forwardly movable longitudinally of the path of the transport means between a starting position and an end position, wherein the filling station and the release station move with the moulds from their starting position at a speed equal to the transport speed of the transport means during filling and releasing the moulds, respectively, while the filling station and the release station return to their starting position after filling and releasing the moulds, respectively.
  • the invention relates to a mould to be used in combination with the above-described method and apparatus.
  • the mould is characterized by two elongated mould parts guided on both sides by guiding pins in slots formed in support plates, which can be coupled to the transport means and which extend laterally of the mould parts, said mould parts being movable with respect to the support plates between a first position, in which the mould is closed and the mould parts sealingly abut each other with their facing sides and enclose the stone strip form, and a second position, in which the mould is opened and the formed stone strip can be released from the mould.
  • Fig. 1 shows very schematically a side view of an apparatus 1 for producing stone strips 2 or the like shown in fig. 5 and 6.
  • the apparatus 1 is provided with a transport means 3 supported in a closed path by a frame 4,which is only schematically shown in the drawing.
  • the transport means 3 carries a plurality of moulds 5 disposed at mutually equal spacings and shown in more detail in fig. 2-4.
  • a filling station 6 is mounted at the path of the transport means 3, which filling station 6 has four supply means 7 for filling the moulds 5 with a concrete mixture.
  • the concrete mixture is feeded through conduits 8 to the filling station 6 by a mixing-metering unit 9 comprising a dry material mixer 10 and a continuous mixer 11, in which the dry mixture is mixed with water.
  • the wet mixture from the mixer 11 is supplied to four concrete metering pumps 12, to which the conduits 8 are connected. Because the concrete mixture is mixed in two phases and because the amount of concrete in the concrete metering pumps is very small, a quickly setting concrete mixture can be used having a relatively short handling time of 5-10 minutes.
  • the concrete mixture is continuously feeded to the supply means 7 backwardly and forwardly movable laterally of the transport direction of the moulds 5, which supply means 7 discharge the concrete mixture equally distributed in filling funnels 13 which are closed by means of a valve 14.
  • glass fibres are also feeded to the supply means 7, which glass fibres are cutted into pieces and mixed with the concrete mixture, so that a concrete product reinforced with glass fibres is obtained. It is noted that the glass fibres can also be mixed with the concrete mixture in an other way, for example in the mixing-metering unit 9.
  • the moulds 5 continuously transported by the transport means 3 are filled from the filling funnels 13, wherein the filling station 6 moves with the moulds 5 from a starting position at a speed equal to the transport speed of the transport means 3.
  • the filling funnels 13 move downwardly, whereas the moulds 5 are positioned with respect to the filling funnels 13, so that they correctly join the moulds 5.
  • the valves 14 By opening the valves 14 the moulds 5 are filled with the concrete mixture mixed with the glass fibres, wherein the filling funnels 13 are vibrated by means of vibrators in a conventional manner. After filling the moulds 5 and closing the valves 14 the filling funnels 13 move upwardly again, after which the filling station 6 returns to its starting position.
  • the moulds 5 are in a filling position, in which the mould 5 is partially opened as shown in fig. 3.
  • the open side of the mould 5 is directed upwardly to the filling funnel 13 in this case.
  • the mould 5 has a relatively wide entrance opening 15, whereby the mould 5 can be filled in a short time, while further a small excess of the concrete mixture can be discharged in the mould 5.
  • the moulds 5 are brought in the closed position shown in fig. 2, wherein a small amount of the concrete mixture is pressed to the outside at the side 16 of the mould 5.
  • the moulds 5 are in an oblique position during the filling,because the path of the transport means 3 contains an angle of for example 30° with the horizontal.
  • the surface of the stone strip form 17 of the mould (see fig. 3) defining the surface of the stone strips 2 directed outwardly during use, is directed downwardly. In this manner it is obtained that substantially no micro pores are formed in this outwardly directed surface of the stone strips 2, whereby the stone strips 2 are resistant to all sorts of weather and a long operational life is guaranteed.
  • the moulds 5 After filling and closing the moulds 5, they pass through a setting distance 18, at least partially surrounded by a heat insulating tunnel 19. After passing the setting distance 18, the moulds 5 arrive at a release station 20,.in which the formed stone strips 2 are released from the moulds 5 by bringing the moulds 5 in the open position shown in fig. 4.
  • the release station 20 is mounted on the frame 4 backwardly and forwardly movable longitudinally of the path of the transport means 3 between a starting position and an end position also.
  • the release station 20 having means for simultaneously releasing two moulds moves with the moulds 5 from a starting position at a speed equal to the speed of the transport means 3 during releasing. After releasing the stone strips 2 from the moulds 5, the release station 20 returns back to the starting position.
  • the release station 20 cooperates with a transport unit 21 which receives the stone strips 2 released by the release station 20 and transports these stone strips 2 to a finishing machine not shown.
  • a heating distance 22 lies between the release station 20 and the filling station 6, the moulds 5 being heated up to a temperature of at least 50°C during passing said heating distance 22.
  • the moulds 5 are heated up to a temperature of about 75°C.
  • the heating distance 22 is formed by a trough 23 disposed beneath a part of the path of the transport means 3, which trough 23 contains a heated liquid 24, for example water.
  • the moulds 5 are immersed in the liquid 24 in their open position (see fig. 4), whereby they are heated upto the desired temperature of about 75°C.
  • a station 25 is provided for oiling the moulds 5.
  • the described apparatus 1 is controlled by means of a central controlling unit 26 in a not further described manner, said controlling unit comprising control and check means so that an operator can adjust and check centrally the operation of the apparatus 1.
  • Fig. 2-4 show a mould 5 in cross-section in three different positions.
  • the mould 5 comprises two elongated mould parts 27 guided on both sides by guiding pins 28 in slots 29.
  • the slots 29 are formed in support plates 30, which extend laterally of the mould parts 27 and can be coupled to the transport means 3 (see fig. 1).
  • the mould parts 27 are movable with respect to the support plates 30 between a first position shown in fig. 2, in which the mould 5 is closed and a second position shown in fig. 4, in which the mould 5 is opened.
  • the mould parts 27 sealingly abut each other with their facing sides and enclose the stone strip form 17.
  • the stone strip 2 can be released from the mould 5, as indicated in fig. 4.
  • the stone strips 2 which can be built up to a wall in a manner shown in fig. 5 and 6,each are provided with four stone strip parts 31 which look like a stone and are seperated from each other by a gap 32.
  • the stone strip parts 31 are interconnected by a support 33 integral with the stone strip parts 31.
  • the support 33 comprises an enlargement 34 at its upper side, which enlargement 34 is received in a cavity 35 when building up a wall, said cavity 35 being formed by means of a protrusion 36. Thereby, a completely closed wall can be built up with the stone strips 2.
  • the mould parts 27 consist of a relatively flexible material resistant to the concrete mixture used, the temperatures involved, the liquid 24 and the oil used.
  • a suitable material is for example a polyurethanelastomer.
  • Rigid elements 37 are included in the material of the mould parts 27 with a mutual spacing, said rigid elements 37 extending in the longitudinal direction of the mould parts 27.
  • the elements 37 may consist of an iron alloy, for example.
  • Each element 37 is guided on both sides by at least one guiding pin 28 in the slots 29. Only the elements 37 lying at the upper side in fig. 2-4, are guided by two guiding pins 28 in the slots 29.
  • slots 39 are formed between the rigid elements 37 in the sides 38 of the mould parts 27 facing away from each other.
  • the slots 29 lie precisely at the height of the lower edge of the stone strip parts 31, at the height of the cavity 36 and the protrusion 36 and precisely under the upper edge of the stone strip parts 31, respectively.
  • the slots 29 in the support plates 30, in which the guiding pins 28 are guided, each consist of two rectilinear portions 40 and 41, wherein the first portions 40 are mutually parallel and the second portions 41 joining the first portions 40 diverge with a sharp angle.
  • the stone strip 2 can be released from the mould 5 without any damage.
  • the rigid elements 27 are interconnected by a plurality of strips 42 of an inextensible, flexible material, which strips 42 extend laterally to the longitudinal direction of the mould parts 27. Thereby,the rigid elements 37 can not move laterally with respect to each other so that the stone strip form 17 are completely fixed.
  • the rigid elements 37 lying at the upper side in fig. 2-4 are coupled with each other by a plurality of mainly cylindrical pins 43 distributed along the longitudinal direction of the mould parts 27, only one of said pins 43 being shown in fig. 2-4.
  • the pin 43 is fixed to the rigid element 37 of one of the mould parts 27, while a bore 44 is formed in the other mould part 27, in which the pin 43 extends in the closed position of fig. 2.
  • the portion 45 of the pin 43 extending in the bore 44 is partially fittingly received in the bore 44 and tapers subsequently.
  • the mould parts 27 are maintained in the mutual correct position by means of the pins 43.
  • the moulds 5 can be readily brought in the filling position and subsequently in the closed position by providing guiding rails (not shown) along the path of the transport means 3 cooperating with the protruding parts of the guiding pins 28.
  • the moulds 5 are gradually closed in this manner after filling with a small excess of concrete mixture, whereby the concrete mixture in the stone strip form 17 is pressed in the direction of the side 16 and indeed partially to the outside. Thereby, a complete filling of the mould 5 is guaranteed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Finishing Walls (AREA)
  • Adornments (AREA)
EP82201378A 1981-11-04 1982-11-03 Dispositif pour fabriquer des bandes de pierre ou analogue Expired EP0078586B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82201378T ATE14694T1 (de) 1981-11-04 1982-11-03 Vorrichtung zum herstellen von steinstreifen oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8104981A NL8104981A (nl) 1981-11-04 1981-11-04 Werkwijze en inrichting voor het vervaardigen van steenstrips of dergelijke.
NL8104981 1981-11-04

Publications (2)

Publication Number Publication Date
EP0078586A1 true EP0078586A1 (fr) 1983-05-11
EP0078586B1 EP0078586B1 (fr) 1985-08-07

Family

ID=19838310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82201378A Expired EP0078586B1 (fr) 1981-11-04 1982-11-03 Dispositif pour fabriquer des bandes de pierre ou analogue

Country Status (4)

Country Link
EP (1) EP0078586B1 (fr)
AT (1) ATE14694T1 (fr)
DE (1) DE3265270D1 (fr)
NL (1) NL8104981A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025933A1 (fr) * 2006-09-01 2008-03-06 Monier Technical Centre Limited Procédé amélioré pour la fabrication d'un produit de construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1453746A (en) * 1922-04-15 1923-05-01 William H Carey Process of making concrete blocks
FR1428674A (fr) * 1964-03-09 1966-02-18 Durisol Ag Perfectionnements apportés aux procédés pour accélérer la prise de corps moulés liés par du ciment
FR1454824A (fr) * 1965-02-20 1966-10-07 Dispositif de fabrication de petits corps moulés en béton
FR2147455A5 (fr) * 1971-07-15 1973-03-09 Gough & Co Ltd

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1453746A (en) * 1922-04-15 1923-05-01 William H Carey Process of making concrete blocks
FR1428674A (fr) * 1964-03-09 1966-02-18 Durisol Ag Perfectionnements apportés aux procédés pour accélérer la prise de corps moulés liés par du ciment
FR1454824A (fr) * 1965-02-20 1966-10-07 Dispositif de fabrication de petits corps moulés en béton
FR2147455A5 (fr) * 1971-07-15 1973-03-09 Gough & Co Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025933A1 (fr) * 2006-09-01 2008-03-06 Monier Technical Centre Limited Procédé amélioré pour la fabrication d'un produit de construction

Also Published As

Publication number Publication date
ATE14694T1 (de) 1985-08-15
EP0078586B1 (fr) 1985-08-07
DE3265270D1 (en) 1985-09-12
NL8104981A (nl) 1983-06-01

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