EP0151379A2 - Installation pour la fabrication de briques moulées en béton aéré - Google Patents

Installation pour la fabrication de briques moulées en béton aéré Download PDF

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Publication number
EP0151379A2
EP0151379A2 EP84890239A EP84890239A EP0151379A2 EP 0151379 A2 EP0151379 A2 EP 0151379A2 EP 84890239 A EP84890239 A EP 84890239A EP 84890239 A EP84890239 A EP 84890239A EP 0151379 A2 EP0151379 A2 EP 0151379A2
Authority
EP
European Patent Office
Prior art keywords
molds
ring
turntable
plant according
base
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
EP84890239A
Other languages
German (de)
English (en)
Other versions
EP0151379A3 (en
EP0151379B1 (fr
Inventor
Aktiengesellschaf Voest-Alpine
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.)
Primetals Technologies Austria GmbH
Original Assignee
Voestalpine AG
Voest Alpine Industrienlagenbau GmbH
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 Voestalpine AG, Voest Alpine Industrienlagenbau GmbH filed Critical Voestalpine AG
Publication of EP0151379A2 publication Critical patent/EP0151379A2/fr
Publication of EP0151379A3 publication Critical patent/EP0151379A3/de
Application granted granted Critical
Publication of EP0151379B1 publication Critical patent/EP0151379B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0023—Drive arrangements for movable carriers, e.g. turntables
    • 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
    • B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
    • 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
    • B28B5/06—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 in moulds on a turntable
    • B28B5/08—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 in moulds on a turntable intermittently rotated

Definitions

  • the invention relates to a plant for producing molded blocks from foam concrete with molds which rest on a base forming the base of the molds, and with a filling device for the molds which are open at the top.
  • the desired porosity is achieved with foam concrete by means of a prefabricated foam which is mixed with the mixture of cement, water and additives. Since the preservation of the air bubbles enclosed in the foam during curing is of particular importance, at least up to dimensional stability, all influences that support the collapse of the foam, including the effects of vibrations when handling the freshly filled molds, should be eliminated as far as possible. For this reason, the molds are placed on a solid base, which forms the bottom of the molds for easier removal from the mold, and loaded with a filling device which has to be moved from mold to mold. The foam concrete remains in the molds resting on the base, at least during a hardening period, in the molds, which ensures that the molded blocks retain their shape adequately.
  • the production of molded blocks from foam concrete therefore requires comparatively large transport routes, large mold-occupying areas and expensive production halls, so that the foam concrete is usually cast in large-volume units, which are subsequently retrofitted with wires or saws cut into stones of the desired size.
  • the large-volume pouring of foam concrete increases productivity, but the disadvantage must be accepted that the stones can only have flat boundary surfaces.
  • the advantageous cutting with wires depends on the strength of the foam concrete, so that the cutting should be carried out at a certain degree of hardening, which is, however, hardly possible in practice.
  • only aggregates up to a grain size of 2mm can be used because larger aggregates that increase strength, e.g. lava, pumice, expanded clay, slag or wood shavings, can no longer be cut with wires and sawing only after an autoclave treatment or a setting time of about 72 hours is possible.
  • the invention is therefore based on the object to avoid these deficiencies and to improve a system of the type described in such a way that a continuous production of molded bricks is ensured without restrictions with regard to the shape and the additives.
  • the invention achieves the stated object in that the base forming the base for the molds is part of a turntable, on which the molds are mounted in at least one concentric circle with a uniform angular spacing, that the filling device assigned to a stationary filling station connected to the turntable stationary demolding station in the direction of rotation of the turntable is immediately downstream, and that the turntable has a step drive with mutually dependent rotary steps on the angular distance of the molds.
  • the base forming the base of the molds is part of a turntable, so the molds can first be moved past the stationary filling station in a self-contained row without moving relative to the base, where they are filled with the foam concrete.
  • the step drive of the turntable provides for the turntable, there are certain turning steps that bring the individual molds to the filling station one after the other.
  • the size of the turntable and the number of molds stored on the turntable can be adjusted depending on the cycle times so that the time for one cycle is sufficient to ensure the hardening of the shaped blocks required for demolding. In the demoulding station immediately upstream of the filling station in the direction of rotation, the shaped blocks can then be demolded and removed.
  • each sector of the turntable contains the shaped stones of a certain hardening stage.
  • the turntable consists of a ring which forms the base for the molds and which is concentric with the axis of rotation of the turntable and which is rotatably supported on stationary supporting rollers.
  • the self-supporting ring which is supported on the support rollers, allows a limitation of the moments of inertia despite a comparatively large diameter, so that the required acceleration of the ring and its braking can be ensured economically with stepper drives.
  • Sufficiently smooth running of the ring can also be achieved in order to be able to exclude vibrations which are harmful for the preservation of the air bubbles in the foam.
  • the central mounting of the ring can advantageously be achieved by at least three guide rollers distributed over the circumference on a concentric peripheral surface of the ring. If the guide rollers are resiliently pressed onto the circumferential surface of the ring, for example by springs or cylinders, then the resilient can ge employment an advantageous tolerance compensation can be ensured, thermal expansion can also be taken into account.
  • the stepper drive could act on the rotary table in a conventional manner via a pinion meshing with a ring gear.
  • the stepper drive consists of at least one stationary supported drive cylinder which carries a gripping head for gripping drivers provided along the ring.
  • the turntable is rotated further by a rotation step corresponding to the cylinder stroke. So that the turntable can be braked via the drive cylinder, the cylinder is provided with a gripping head which must have stop surfaces which act both in the direction of rotation and counter to the direction of rotation.
  • a ring surrounding the drivers of the turntable fulfills this task in the simplest way.
  • the stepping drive can also consist of at least two cylinders, which are supported in opposite directions and act on drivers along the ring, one of which acts as a drive cylinder and the other as a brake cylinder.
  • the filling station can advantageously consist of a radial conveyor with respect to the ring, which is radially displaceably mounted in a frame and carries a scraper which can be swiveled onto the molds at its discharge end.
  • the foam concrete finished in a corresponding mixer is applied to the conveyor which is moved over the molds, the molds being filled with the foam concrete falling off the conveyor.
  • the loading rate is chosen to be somewhat higher than necessary in order to ensure that the molds are overfilled. With the scraper provided at the discharge end of the conveyor, the excess amount of foam concrete is stripped off the molds, which means that the molds are filled exactly ensures.
  • the demolding station can have a lifting device for the molds which is adjustable radially with respect to the ring, a vertically immovable ejector for the shaped blocks which cooperates with the lifting device and a conveyor for removing the removed shaped blocks.
  • the ejector is provided with differently high ejection arms so that the ejection arms are used one after the other, the ejection forces can be kept comparatively low.
  • the trolley of the hoist must be aligned with the ejector. Such alignment is not necessary if the hoist trolley carries the ejector. It is not necessary to precisely align the hoist or the ejector with the conveyor.
  • the filling station can be arranged inside and the demolding station outside the ring of the turntable. This arrangement also ensures a minimal angular distance between the demolding station and the filling station, which is reflected in a good utilization of the ring surface forming the base for the molds.
  • placing the molds on a turntable offers the simple possibility of exposing the shaped blocks in certain hardening areas, for example a heat treatment, because this treatment, which is coordinated with a time, can be limited locally to a sector area of the turntable.
  • the ring of the turntable can advantageously be covered by a non-rotatable ring hood that can be heated at least in certain sectors, so that the space to be heated is economically limited.
  • the device shown consists essentially of a turntable 1, which forms a base 2 for the molds 3, which are uniformly distributed in a concentric circle on the turntable, and to which a stationary filling station 4 and, on the other hand, a stationary demolding station 5 are assigned, the demolding station 5 being the Filling station 4 is immediately upstream in the direction of rotation of the turntable 1.
  • the turntable 1 has a self-supporting ring 6 which carries the base 2 for the molds 3 and is rotatably supported on stationary support rollers 7. To center the ring 6 are guide rollers 8 which are attached to the inner circumferential surface 9 of the ring 6 are made by springs or cylinders, which are not shown for reasons of clarity.
  • a ring drive 10 is used to drive the ring 6, which, as shown in FIGS. 1 and 3, consists of a drive cylinder 11 acting in the direction of rotation, which is supported in a stationary manner and has a gripping head 13 which engages with drivers 12 along the ring 6.
  • this gripping head 13 consists of a ring which includes the drivers 12, so that the ring 6 can not only be driven but also braked via the drive cylinder 11. So that the gripping head 13 can be plugged onto the driver 12, the drive cylinder 11 is pressed against the driver 12 via a spring 14, which press the gripping head 13 down for coupling against the force of the spring 14. To uncouple the gripping head 13 must be removed from the drivers 12, which is carried out by a separate device, which is not shown in detail. When the drive cylinder 11 is acted upon appropriately, the ring 6 is rotated via the gripper head 13, which holds one of the drivers 12, in accordance with the stroke of the drive cylinder 11.
  • the gripping head 13 is to be removed from the driver 12 and the drive cylinder 11 is returned to its starting position, the gripping head 13 being plugged onto the following driver 12, so that a further turning step of the ring 6 is carried out when the cylinder 11 is loaded again can.
  • a locking device can ensure the rotationally fixed mounting of the ring 6 during the resetting of the drive cylinder 11.
  • a stepper drive 10 can be used with at least two cylinders 15 and 16 acting in opposite directions on the drivers 12, one of which serves as a drive cylinder and the other as a brake cylinder.
  • the coupling of the cylinders 15 and 16 with the drivers 12 is made possible by springs 17 which press the print heads 18 of these cylinders against the drivers.
  • To decouple the brake cylinder 16 its print head 18 must be lifted off the driver 12 again. This is not necessary for the drive cylinder 15 because the drivers 12 can reset the print head 18 against the force of the spring 17.
  • the ring 6 of the turntable 1 is covered with a heat-insulating ring hood 19, which allows the ring surface of the turntable to be divided economically into several treatment zones, for example a storage zone, a preheating zone, a heating zone, a warming zone and a cooling zone .
  • the seal between the driven ring 6 and the fixed ring hood 19 takes place via liquid-filled ring channels 20 which are provided on the ring hood 19 and protrude into the sealing webs 21.
  • the resulting annular space 22 above the ring 6 can be charged with hot air, steam or cooling air via appropriate nozzles 23 in order to ensure the appropriate treatment of the shaped blocks.
  • the filling station 4 has a belt conveyor 25 which can be moved radially in a frame 24 and which carries at its discharge end 26 a scraper 27 which can be swiveled onto the molds 3.
  • the foam concrete to be filled which is prepared in a mixing system 28, is fed via a chute 29 to a container 30 which is pivotally mounted on the frame 24 above the belt conveyor 25, so that the foam concrete is applied from the container 30 to the belt conveyor 25 can be.
  • the belt conveyor 25 is then pulled back during operation from the outside inwards over the mold located in its area, the mold being filled with foam concrete.
  • the scraper 27 pivoted onto the upper mold edge smoothes the filling and conveys the wiped material to a slide or the like in order to be able to feed it back to the new mold.
  • the shaped stones in the molds are hardened to a degree that allows demolding.
  • the molds 3 are removed from the demolding station 5 with the aid of a lifting device 31 from that formed by the ring 6.
  • Base 2 is lifted off and guided to a radial conveyor 32 on which the demolded shaped blocks are transported away.
  • the trolley 33 of the hoist 31 which is mounted so as to be radially movable on a frame 34 bridging the ring 6, additionally carries an ejector 35 in the form of a plurality of ejection arms 36, by lifting the mold 3 over the ejector 35 with the aid of the hoist 31 the shaped stone can be pressed out of the mold, without additional lifting of the shaped stone, so that the drop height can advantageously remain low.
  • the molds are lifted above the ejector 35, the mold can be cleaned in one operation if corresponding cleaning brushes or the like are arranged downstream of the ejection arms 36. After such cleaning, the mold can be sprayed with a release agent before it is placed on the turntable 1 again with the lifting device.
  • the mold 3 prepared for a new filling reaches the area of the belt conveyor 25 of the filling station 4, at least during the next turning steps of the turntable, where it is again filled with foam concrete for the production of a further shaped block while repeating the working steps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Cultivation Of Plants (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP19840890239 1984-01-19 1984-12-12 Installation pour la fabrication de briques moulées en béton aéré Expired - Lifetime EP0151379B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT161/84 1984-01-19
AT16184A AT391102B (de) 1984-01-19 1984-01-19 Anlage zum herstellen von formsteinen aus schaumbeton

Publications (3)

Publication Number Publication Date
EP0151379A2 true EP0151379A2 (fr) 1985-08-14
EP0151379A3 EP0151379A3 (en) 1987-01-07
EP0151379B1 EP0151379B1 (fr) 1990-04-04

Family

ID=3483172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840890239 Expired - Lifetime EP0151379B1 (fr) 1984-01-19 1984-12-12 Installation pour la fabrication de briques moulées en béton aéré

Country Status (7)

Country Link
EP (1) EP0151379B1 (fr)
AT (1) AT391102B (fr)
DE (1) DE3481830D1 (fr)
DK (1) DK23685A (fr)
ES (1) ES8601005A1 (fr)
FI (1) FI76953C (fr)
NO (1) NO161424C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106584650A (zh) * 2016-12-19 2017-04-26 淮安莱福模具科技有限公司 一种异向脱模砖模具
CN108437163A (zh) * 2018-04-03 2018-08-24 浙江水利水电学院 一种全自动均匀填料砂基透水砖生产设备
CN116161524A (zh) * 2023-03-03 2023-05-26 中建三局集团(深圳)有限公司 一种用于加砌块的智能化吊装设备
CN119260898A (zh) * 2024-12-06 2025-01-07 山西盛达威科技有限公司 一种负极石墨保温碳砖用原料加工用挤压成型装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102756424A (zh) * 2012-06-19 2012-10-31 张大山 推挤式混凝土水泥杆异型成型机

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL99889C (fr) * 1900-01-01
GB205679A (en) * 1922-10-18 1923-10-25 James William Wood Improved apparatus for moulding concrete and other plastic substances
GB492280A (en) * 1936-04-02 1938-09-16 William Porter Witherow Improvements in or relating to a method of and apparatus for making expanded cement articles
FR925338A (fr) * 1945-04-10 1947-09-01 Electro Refractaire Produits réfractaires fondus
FR915338A (fr) * 1945-05-11 1946-11-04 Machine pour la fabrication d'agglomérés en série
FR1144188A (fr) * 1955-07-01 1957-10-10 Afma Procédé de fabrication de produits céramiques, installation et appareils pour sa mise en produits et produits obtenus
AT263598B (de) * 1966-06-08 1968-07-25 Walter Lanz Verfahren und Einrichtung zur mechanisierten Herstellung von Hohlsteinen aus Gasbeton
DE2166391A1 (de) * 1971-11-29 1974-02-21 Beckmann Fa Bernhard Muellsackdrehtisch
US3745856A (en) * 1972-02-29 1973-07-17 Resources Control Corp Carousel indexing system for solid waste compactor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106584650A (zh) * 2016-12-19 2017-04-26 淮安莱福模具科技有限公司 一种异向脱模砖模具
CN108437163A (zh) * 2018-04-03 2018-08-24 浙江水利水电学院 一种全自动均匀填料砂基透水砖生产设备
CN116161524A (zh) * 2023-03-03 2023-05-26 中建三局集团(深圳)有限公司 一种用于加砌块的智能化吊装设备
CN119260898A (zh) * 2024-12-06 2025-01-07 山西盛达威科技有限公司 一种负极石墨保温碳砖用原料加工用挤压成型装置

Also Published As

Publication number Publication date
EP0151379A3 (en) 1987-01-07
DK23685A (da) 1985-07-20
FI76953B (fi) 1988-09-30
AT391102B (de) 1990-08-27
ES539693A0 (es) 1985-11-01
NO850238L (no) 1985-07-22
ATA16184A (de) 1990-02-15
FI850187L (fi) 1985-07-20
EP0151379B1 (fr) 1990-04-04
NO161424C (no) 1989-08-16
ES8601005A1 (es) 1985-11-01
DK23685D0 (da) 1985-01-18
FI76953C (fi) 1989-01-10
NO161424B (no) 1989-05-08
DE3481830D1 (de) 1990-05-10
FI850187A0 (fi) 1985-01-16

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