EP0056020B1 - Procede et appareil de fabrication d'elements profiles - Google Patents

Procede et appareil de fabrication d'elements profiles Download PDF

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Publication number
EP0056020B1
EP0056020B1 EP80900687A EP80900687A EP0056020B1 EP 0056020 B1 EP0056020 B1 EP 0056020B1 EP 80900687 A EP80900687 A EP 80900687A EP 80900687 A EP80900687 A EP 80900687A EP 0056020 B1 EP0056020 B1 EP 0056020B1
Authority
EP
European Patent Office
Prior art keywords
casting
transport
belt
transport unit
profiled
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.)
Expired
Application number
EP80900687A
Other languages
German (de)
English (en)
Other versions
EP0056020A1 (fr
Inventor
Per-Eric Bondpers
Per Inge Ingesson
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.)
A-BETONG AB/SABEMA MATERIAL AB
Sabema Material AB
Abetong AB
Original Assignee
A-BETONG AB/SABEMA MATERIAL AB
Sabema Material AB
Abetong AB
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 A-BETONG AB/SABEMA MATERIAL AB, Sabema Material AB, Abetong AB filed Critical A-BETONG AB/SABEMA MATERIAL AB
Priority to AT80900687T priority Critical patent/ATE8972T1/de
Publication of EP0056020A1 publication Critical patent/EP0056020A1/fr
Application granted granted Critical
Publication of EP0056020B1 publication Critical patent/EP0056020B1/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
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/245—Curing concrete 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
    • B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
    • 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
    • B28B5/026—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 indefinite length
    • B28B5/027—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 indefinite length the moulding surfaces being of the indefinite length type, e.g. belts, and being continuously fed

Definitions

  • the present invention relates to a method and apparatus for manufacturing profiled elements from a hardenable mass, such as concrete, while using a casting machine from which the mass is discharged in the form of a continuous casting or string via a nozzle which is preferably exchangeable and which determines the profiled shape of the casting. More specifically the invention relates to a method and apparatus defined in the preamble of claim 1 and 2, respectively.
  • reinforcing rods of suitable length can be introduced through an opening which is located on the other side of the machine in register with the nozzle, whereat the rod or rods is or are inserted to an extent such that they pass out through the nozzle together with the casting exiting therethrough.
  • the nozzle has discharged a casting of sufficient length, normally about 1/2 m, the friction between the reinforcing rods and the casting is sufficiently great for the casting to entrain therewith the rod or rods during continued discharge of the casting.
  • the length of the reinforcing rod or rods is previously adapted to the predetermined length of the profiled element in question, the casting being cut when the full length of one or more reinforcing rods has passed through the nozzle.
  • the concrete continuous casting is discharged onto a smooth surface or a conveyor belt whose movement is controlled or driven by the discharged casting.
  • the continued handling of the casting is effected substantially manually, which has created a number of complications and involved high costs.
  • great difficulties have been encountered during the continued transport and handling of the casting, primarily with respect to the handling of the casting during its transport to a curing or hardening storage site.
  • FR-A-1 247 052 discloses a method which comprises discharging the profiled elements onto a transport unit provided with an endless movable belt, the belt being caused to stop after having received the profiled element and the transport unit is moved in a circuit path during which the element is hardened and subsequently removed from the transport unit; thereafter the empty transport unit is returned to the starting point in order to receive a new profiled element.
  • the casting machine is not an extruder producing a continuous string via a nozzle, which subsequently is cut transversely into the desired lengths, but a mould equipment which produces the elements in the desired lengths.
  • An object of the present invention is to provide a method and apparatus of the aforedescribed kind in which the production sequences can be carried out in a highly reliable and accurate fashion during positive and careful handling of the discharged continuous casting so as to enable the manufacturing operation to be automatized with a minimum of manual operations in said sequence.
  • Another object of the invention is to provide a method and an apparatus of the aforementioned kind which enable the manufacture of profiled elements of any cross-sectional or profile shape to be rationalized, the maximum size of the manufactured element being determined by the dimensions of the nozzles which can be mounted onto an existing casting machine.
  • a further object of the invention is to provide a method and an apparatus which enable the manufacture of profiled elements from differing types of hardenable masses, i.e. not only concrete, and in which a discharged continuous casting can be cut into any number of separate elements and thus also of any desired length, in which case a complete group of such elements is subjected to simultaneous and similar handling operations during transport to a hardening storage site, and subsequent to being hardened, to a receiving station.
  • the method according to the invention is mainly characterized by claim 1.
  • a particular advantage in connection herewith is that when the casting is transported to the hardening storage site, the vertical space in the factory area can be utilized in that, for example by using a separate stand, frame or the like, several conveyor units can be handled simultaneously, stacked vertically one above the other.
  • a further advantage is that simple and purposeful conveying means for the transport units is provided, e.g. in the form of a roller path which permits such accurately guided and simply controlled horizontal transport of the units that the apparatus can be readily automatized with the use of limit switches and like standard devices which provide for accurate guidance and control of the working sequences.
  • the profiled casting is discharged onto the transport unit and readily cut into a plurality of separate elements, if so desired.
  • the method according to the invention enables many differing types of profiled elements comprising hardenable masses of varying kinds and for different purposes to be readily manufactured.
  • elements which can be manufactured by means of the method according to the invention include differing kinds of profiled concrete elements, such as beams, battens, curbing stones, stays and struts of differing kinds, floor elements, such as so-called split floors for cow sheds and the like, roofing tiles, hollow blocks etc.
  • examples of other kinds of elements which can be manufactured with other hardenable masses include roofing stone, roofing tiles, profiled elements, beams and posts of plastics material etc.
  • the belt on the transport unit is driven by the external source at least whilst the concrete casting is fed onto and/or the hardened element is removed from the transport unit.
  • An external drive source at the receiving station in connection with the casting machine can also, to advantage, be provided with a variator which enables the speed of the conveyor belt to be accurately adjusted to the outfeed speed of the casting. Further, the correct length of the casting can be readily adjusted with the aid of a pulse counter arranged to automatically stop the outfeed of a casting when the correct length has been reached.
  • the pulse counter may also be arranged to provide a given additional length, to enable the casting to be centered on the transport unit, thereby facilitating the further handling of the casting.
  • the transport unit Prior to energizing the outer drive source, the transport unit is locked in position, this being carried out automatically as the drive source is energized.
  • transport units for example, can be stacked one above the other in a frame or rack arranged to be lifted by means of the hook of a traverse crane or the like.
  • the empty transport units are returned, preferably via a cleaning station, in which the belts of the units are driven. This renders the cleaning operation more effective.
  • the invention also relates to apparatus for carrying out the aforedescribed method, the main characterizing features of the apparatus being disclosed in claim 2.
  • FIG. 1 illustrates schematically principal parts of an apparatus for manufacturing continuously cast profiled elements of concrete while using a casting machine 1 having an exchangeable nozzle 1a.
  • the machine is provided with a feed screw (not shown), which, via the nozzle 1 a, delivers a profiled casting onto a transport unit 10, which will be hereinafter described.
  • the concrete mass is charged to the machine 1 via a container 2 and a cross feeder 3.
  • the casting discharged from the machine 1 is reinforced with reinforcing rods 4 from a reinforcing rod store 5.
  • the rods 4 are placed on a carriage 6 and are introduced centrally into the machine, where they are fed out, whilst guided by a separate calibrating head, together with the concrete casting discharged through the nozzle.
  • the carriage is caused to move synchronously with the concrete casting, the reinforcing rods being inserted until they are gripped by the casting.
  • the profiled casting is discharged onto a transport unit 10 at a station referenced A in Figure 1.
  • the conveyor belt 12 of said unit is driven by an external drive source, said source having the form of a drive motor 21 provided with a variator 22.
  • the drive unit has an output shaft 21a, which is connected, via a claw coupling 23, to a belt-turn shaft 14 cooperating with the belt 12 of the transport unit.
  • the belt-turn shaft at the opposite end of the transport unit is referenced 13.
  • the transport unit Before the output shaft 21 a of the drive motor is connected to the shaft 14, the transport unit is locked in position by means of a fixing claw 20' arranged to cooperate with a transversely extending rod 20 at one end of the transport unit.
  • the claw 20' is shown schematically in Figure 2.
  • the correct length of the elements is determined by means of a pulse counter (not shown) which automatically interrupts the outfeed from the casting machine 1 when the correct element length has been reached.
  • the pulse counter can, at the same time, be arranged to provide certain additional lengths, to enable the continuous casting to be centered on the belt.
  • the casting is cut, which can either be effected manually or by an automatically operating cutting means (not shown).
  • the transport unit is then moved around, in a circle, while passing certain treatment stations and other stations referenced B to K in Figure 1.
  • the casting and the transport unit respectively are subjected to certain handling and/or treatment processes at the different stations.
  • Station C Fine polishing of the cut concrete surfaces is carried out at station B.
  • Station C can be employed to check the result of those working operations carried out hitherto, it always being ensured that the production sequence is interrupted for those profiled castings which cannot lead to an acceptable final product.
  • a plurality, suitably four, of transport units are automatically stacked one above the other, to which end there is used a separate stacking rack 41 having vertically movable arms.
  • a transport frame 40 of the kind shown in Figure 3 is moved to the rack 41.
  • the transport frame 40 is moved on rails 42 in the floor, which includes a turn-plate 42a permitting the transport frame to be turned through 90°.
  • the purpose of this is to transfer the transport units to the station E, which comprises a hardening storage site.
  • the transport frame 40 shown in Figure 3 comprises a vertical frame structure 40a having a lower frame part 40b which carries wheels 40c.
  • Four pairs of raiseable and lowerable arms 40d for carrying the transport units 10 are activated by two hydraulic devices 40e.
  • the transport units 10 are thus transferred from the stacking rack 41 to the transport frame 40, by moving the transport frame close into the rack 41, whereupon all of said arms 40d are lifted into engagement with the transport units 10.
  • the transport units are removed in a corresponding way at the hardening site 43 at station E, which as beforementioned comprises a hardening storage site.
  • the hardening station 43 may have the form of a slowly moving conveyor, on which the units move from one end of the conveyor to the other over a period of time required to harden the castings.
  • the station may have a form of a stationary frame structure in which transport units are stacked one above the other until the frame is completely or partially filled, said units remaining in rest until the castings have hardened.
  • the sequence of operations is the opposite to that at the stacking station D.
  • the conveyor belt 12 is started with the aid of an external drive motor 21 located at said station, the concrete profiled element being transferred to station G, at which any final adjustment required to the element is made before the finished element is finally discharged.
  • the return transport of the empty transport unit 10 is commenced, said unit first passing a cleaning station H, in which the transport unit is fixed and connected to an external drive motor 21 for driving the belt of said unit, thereby facilitating cleansing of the transport unit by means of, for example, a water sprayed brush.
  • the transport unit then passes a further two stations, designated I and J, which can be used as buffer stations before the transport unit finally reaches the station K, where a cross conveyor 50 automatically transfers the transport unit to the starting position at station A, where a new cycle is commenced.
  • the transport units are conveyed between stations D-E-F on a roller path 30, 30a of the kind shown in Figure 2. This permits accurate guidance and control of the transport sequence. The same is true of the transportation of the continuous casting and profiled element provided when the belt 12 is started with the aid of the external drive source 21.
  • the transport cycle may contain additional stations.
  • a cutting station in which, primarily, those elements which exhibit manufacturing faults, for example because the reinforcing rods project out of the element, or like faults, can be processed. Further, elements which have certain defects can be at least partially "saved", by cutting away the defected parts of said elements while recovering the remaining part thereof.
  • roller conveyors 30, 30a instead of the roller conveyors 30, 30a other types of transport means for said units are conceivable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Ceramic Products (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Circuits Of Receivers In General (AREA)

Claims (3)

1. Un procédé de fabrication d'élémente profilés à partir d'une masse durcissable telle que le béton, utilisant une machine à mouler (1) d'où la masse est débitée sous la forme d'un moulage continu ou d'une barre continue, à travers une filière (1a), de preférence interchangeable, qui détermine la forme du profil du moulage, comprenant les phases consistant à: décharger ledit moulage profilé sur une unité de transport (10) équipée d'une courroie mobile sans fin (12), et a le couper en éléments de longueur désirée, caractérisé en ce qu'on provoque l'arrêt de la courroie après la réception de l'élément et on déplace l'unité de transport réelle (10) selon un trajet en circuit au cours duquel l'élément (8) est durci et, après ledit processus de durcissement on enlève ledit élément (8) de l'unité de transport (10); on renvoie l'unité de transport vide (10) à la position de départ, pour la réception d'un nouveau moulage profilé déchargé de la machine à mouler; et on met la courroie (12) de l'unité de transport (10) en mouvement au moins pendant le temps où le moulage est amené sur l'unité de transport (10) et/ou où l'élément durci est évacué de l'élément de transport (10); on met ladite courroie (12) en mouvement au moyen d'une source de force motrice extérieure (21) comprenant un arbre de sortie (21 a) qui est temporairement accouplé à un arbre (14) de renvoi de la courroie agencé a une extrémité de l'unité de transport (10); on empile deux ou plus de deux unités de transport (10) avant ledit processus de durcissement, l'une au-dessus de l'autre, dans un châssis (41) et on transfère les unités, ainsi empilées, à un site de stockage de durcissement (E); et, après ledit processus de durcissement, on dépile lesdites unités de transport (10) on évacue les éléments profilés finis (8).
2. Une installation pour la fabrication d'éléments profilés à partir d'une masse durcissable telle que le béton comprenant une machine à mouler (1) munie d'une filière (1 a), de préférence interchangeable, servant à débiter un moulage profilé fait de la masse durcissable; un dispositif de transport comprenant une pluralité de postes (A-G) servant à manutentionner, travailler et/ou durcir des pièces coupées dudit moulage, ledit dispositif de transport comprenant une pluralité d'unités de transport (10) munies de courroies mobiles sans fin (12), caractérisée en ce que ledit dispositif de transport comprend en outre des moyens (30, 30a) servant à transporter lesdites unités de transport (10) en un trajet en circuit au cours du passage desdits postes (A-G); des moyens (20) servant à retenir temporairement les unités de transport (10) en position fixe dans au moins un poste, tel que le poste (A) de production du moulage et/ou un poste (F, G) de déchargement du moulage, des moyens d'entraînement extérieurs (21, 23) servant à entraîner la courroie transporteuse (12) de l'unité de transport (10) dans au moins l'un desdits postes (A-G), lesdits moyens d'entraînement extérieurs comprenant un moteur d'entraînement extérieur (21) ayant un arbre de sortie (21 a) agencé pour être accouplé à l'un des arbres (14) de renvoi de courroie de la courroie transporteuse (12) et en ce que les moyens de transport des unités de transport comprennent au moins un chemin à rouleaux (30, 30a) pour le transport horizontal des unités de transport consécutives (10) à un poste d'empilement (D) et au moins un râtelier de transport (40) servant à transférer deux ou plus de deux unités de transport (10) empilées l'une au-dessus de l'autre jusqu'à un site de stockage et de durcissement (E) et à les évacuer de ce site.
3. Installation selon la revendication 2, caractérisée en ce qu'un moteur d'entraînement (21) prévu pour entraîner la courroie transporteuse (12) desdites unités est agencé au poste (A) de production du moulage, dans un poste (F, G) de désempilement ou de déchargement et dans un poste (H) de nettoyage des unités de transport vides.
EP80900687A 1980-04-09 1980-04-09 Procede et appareil de fabrication d'elements profiles Expired EP0056020B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80900687T ATE8972T1 (de) 1980-04-09 1980-04-09 Verfahren und vorrichtung zur herstellung von profilierten elementen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1980/000101 WO1981002865A1 (fr) 1980-04-09 1980-04-09 Procede et appareil de fabrication d'elements

Publications (2)

Publication Number Publication Date
EP0056020A1 EP0056020A1 (fr) 1982-07-21
EP0056020B1 true EP0056020B1 (fr) 1984-08-15

Family

ID=20339902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80900687A Expired EP0056020B1 (fr) 1980-04-09 1980-04-09 Procede et appareil de fabrication d'elements profiles

Country Status (5)

Country Link
EP (1) EP0056020B1 (fr)
AT (1) ATE8972T1 (fr)
DE (1) DE3068934D1 (fr)
DK (1) DK538881A (fr)
WO (1) WO1981002865A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ226585A (en) * 1988-10-14 1992-04-28 Fibre Cement Technology Ltd Ferrocement panels shifted off conveyor with mortar in plastic state
EP0812252A1 (fr) * 1995-11-14 1997-12-17 FMG Verfahrenstechnik AG Procede et dispositif pour la production de corps fa onnes longitudinaux realises dans un materiau coulable, notamment de radiers
GB2311747A (en) * 1996-04-04 1997-10-08 Nordimpianti Otm Srl Process and plant for the production of pre-stressed concrete products

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE87517C1 (fr) *
SE99475C1 (fr) *
DE191268C (fr) *
FR1247052A (fr) * 1959-01-19 1960-11-25 Siporex Int Ab Installation pour la fabrication de produits en béton léger

Also Published As

Publication number Publication date
ATE8972T1 (de) 1984-09-15
DK538881A (da) 1982-02-01
WO1981002865A1 (fr) 1981-10-15
DE3068934D1 (en) 1984-09-20
EP0056020A1 (fr) 1982-07-21

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