EP0151379B1 - Anlage zum Herstellen von Formsteinen aus Schaumbeton - Google Patents

Anlage zum Herstellen von Formsteinen aus Schaumbeton Download PDF

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Publication number
EP0151379B1
EP0151379B1 EP19840890239 EP84890239A EP0151379B1 EP 0151379 B1 EP0151379 B1 EP 0151379B1 EP 19840890239 EP19840890239 EP 19840890239 EP 84890239 A EP84890239 A EP 84890239A EP 0151379 B1 EP0151379 B1 EP 0151379B1
Authority
EP
European Patent Office
Prior art keywords
turntable
ring
moulds
installation according
ejector
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 - Lifetime
Application number
EP19840890239
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0151379A3 (en
EP0151379A2 (de
Inventor
Industrieanlagenbau Gesellschaft M B.H. 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
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 Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0151379A2 publication Critical patent/EP0151379A2/de
Publication of EP0151379A3 publication Critical patent/EP0151379A3/de
Application granted granted Critical
Publication of EP0151379B1 publication Critical patent/EP0151379B1/de
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.
  • a plant of this kind is known from GB-A-1173070.
  • the desired porosity in foam concrete is achieved by a prefabricated foam, which is added to the mixture of cement, water and additives. Since the preservation of the air bubbles enclosed in the foam during curing at least up to dimensional stability is of particular importance, 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 time, in the molds, which ensures that the molded blocks have sufficient dimensional stability.
  • 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 that are subsequently cut into stones of the desired size using wires or saws.
  • 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 curing, which is hardly possible in practice.
  • only aggregates up to a grain size of 2 mm 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 improve a system of the type described in such a way that a continuous production of molded blocks from foam concrete is ensured without restriction with regard to the shape and the additives, while maintaining simple demolding.
  • 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 an even angular distance and which can be driven in steps of rotation in accordance with the angular distance between the molds is that the filling device assigned to a stationary filling station connected to the turntable is arranged immediately downstream of a stationary demolding station in the direction of rotation of the turntable, and that the demolding station is a lifting device for the molds which is adjustable radially relative to the rotating table, a vertically displaceable ejector for the lifting device which interacts with the lifting device Has shaped stones and a conveyor for removal of the demolded shaped stones.
  • the base forming the base of the molds is part of a turntable that can be carried out in a simple, vibration-free manner, so that the molds can be moved in a self-contained row from a stationary filling station to a demolding station without movement relative to the base, as was done for vibrated ones Concrete blocks is known.
  • the size of the turntable and the number of molds stored on the turntable can be coordinated with one another depending on the cycle times so that the time for one cycle is sufficient to ensure the hardening of the foam concrete required for demolding.
  • the molds with the shaped stones can then be gripped by the lifting device and moved over the conveyor, so that the shaped stones demolded by means of the ejector fall directly from the bottomless mold onto the conveyor and are transported away. Since the ejector is held immovably in the vertical direction, the respective shape only needs to be raised further by the lifting device for demolding, so that the ejector can hold the molded block back from the shape. There is therefore no need for an additional drive for otherwise common ejection stamps, and what is more, the drop height for the demoulded stones can remain low because the shape is pulled over the ejector.
  • the shaped stones can also receive special treatment at certain degrees of hardening, because each sector of the rotary table is the shaped stones of a certain hardening stage contains. After the molds have been removed from the mold, the molds can be placed on the turntable again after being cleaned and coated with a release agent and filled again.
  • the turntable consists of a ring forming the base for the molds, concentric to its axis of rotation, which is rotatably supported on stationary supporting rollers and is guided centrally by at least three guide rollers distributed over the circumference on a concentric circumferential surface of the ring, not only a simple and largely vibration-free construction ensured, but also limited the moment of inertia, so that the required acceleration of the ring and its braking can be achieved economically with a stepper drive. Due to the sufficiently smooth running of the ring, all vibrations that are harmful to the air bubbles in the foam of the foam concrete can be avoided.
  • the central bearing of the ring is achieved by guide rollers distributed over the circumference, which are preferably pressed resiliently against the circumferential surface of the ring with the aid of springs or cylinders in order to ensure a simple tolerance compensation which also takes thermal expansion into account.
  • the stepper drive consists of at least one fixedly supported drive cylinder, which carries a gripping head for gripping drivers provided along the ring
  • the rotary table can be both accelerated and braked via this drive cylinder.
  • the gripping head has a ring which surrounds the drivers of the turntable and which results in a positive engagement in both directions of rotation.
  • the stepping drive can also consist of at least two cylinders which are supported in a stationary manner and act in opposite directions 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 turntable, which is mounted in a frame so as to be radially displaceable and carries a scraper which can be pivoted 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 wiped off the molds, which ensures exact filling of the molds.
  • the ejector of the demolding station can have differently high ejection arms which are used one after the other. If the ejector is arranged in a fixed position above the conveyor for the removal of the demoulded stones, the trolley of the hoist must be aligned with the ejector. Such alignment is not necessary if the hoist trolley carries the ejector. A precise alignment of the hoist or the pusher with the conveyor is not necessary.
  • 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 stones in certain hardening areas, for example a heat treatment, because this treatment, which is coordinated at 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, which 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 evenly distributed in a concentric key on the turntable, and to which, on the one hand, 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 supports the base 2 for the molds 3 and is rotatably supported on stationary support rollers 7. To center the ring 6 serve guide rollers 8, which are placed on the inner peripheral surface 9 of the ring 6 by springs or cylinders, which are not shown for reasons of clarity.
  • a stepper drive 10 which according to FIGS. 1 and 3 consists of a drive cylinder 11 acting in the direction of rotation, the location is firmly supported and has a gripping head 13 engaging drivers 12 along the ring 6.
  • this gripping head 13 consists of a ring which comprises the drivers 12, so that the ring 6 can not only be driven but also braked via the drive cylinder 11.
  • 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.
  • 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.
  • 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 with at least two cylinders 15 and 16 acting in opposite directions on the drivers 12 can be used, of which one 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 supplied 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 in which is prepared in a mixing system 28, is fed via a.
  • Chute 29 is fed to a container 30 which is pivotally mounted on the frame 24 above the belt conveyor 25, so that the foam concrete can be applied from the container 30 to the belt conveyor 25.
  • the belt conveyor 25 is then retracted from the outside inwards over the mold located in its area during its operation, 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 molded stones in the molds have hardened to a degree that allows demolding.
  • the molds 3 are lifted in the demolding station 5 with the aid of a lifting device 31 from the base 2 formed by the ring 6 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 mold can be cleaned in one operation if the cleaning arms or the like have corresponding cleaning brushes or the like. 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)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Cultivation Of Plants (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
EP19840890239 1984-01-19 1984-12-12 Anlage zum Herstellen von Formsteinen aus Schaumbeton Expired - Lifetime EP0151379B1 (de)

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 EP0151379A2 (de) 1985-08-14
EP0151379A3 EP0151379A3 (en) 1987-01-07
EP0151379B1 true EP0151379B1 (de) 1990-04-04

Family

ID=3483172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840890239 Expired - Lifetime EP0151379B1 (de) 1984-01-19 1984-12-12 Anlage zum Herstellen von Formsteinen aus Schaumbeton

Country Status (7)

Country Link
EP (1) EP0151379B1 (es)
AT (1) AT391102B (es)
DE (1) DE3481830D1 (es)
DK (1) DK23685A (es)
ES (1) ES539693A0 (es)
FI (1) FI76953C (es)
NO (1) NO161424C (es)

Cited By (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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106584650B (zh) * 2016-12-19 2019-03-12 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

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL99889C (es) * 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 (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

Also Published As

Publication number Publication date
EP0151379A3 (en) 1987-01-07
FI850187A0 (fi) 1985-01-16
NO161424C (no) 1989-08-16
FI76953B (fi) 1988-09-30
NO850238L (no) 1985-07-22
ES8601005A1 (es) 1985-11-01
AT391102B (de) 1990-08-27
NO161424B (no) 1989-05-08
DK23685A (da) 1985-07-20
ATA16184A (de) 1990-02-15
ES539693A0 (es) 1985-11-01
DE3481830D1 (de) 1990-05-10
FI76953C (fi) 1989-01-10
FI850187L (fi) 1985-07-20
EP0151379A2 (de) 1985-08-14
DK23685D0 (da) 1985-01-18

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