US3758934A - Method of and apparatus for separating lightweight (aerated) concrete elements - Google Patents

Method of and apparatus for separating lightweight (aerated) concrete elements Download PDF

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Publication number
US3758934A
US3758934A US00229057A US3758934DA US3758934A US 3758934 A US3758934 A US 3758934A US 00229057 A US00229057 A US 00229057A US 3758934D A US3758934D A US 3758934DA US 3758934 A US3758934 A US 3758934A
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United States
Prior art keywords
clamping
elements
pair
units
arms
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Expired - Lifetime
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US00229057A
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English (en)
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B Hasselgren
W Sebardt
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Ytong AG
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Intong AB
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G59/00—De-stacking of articles
    • B65G59/02—De-stacking from the top of the stack
    • 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
    • B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
    • B28B11/145—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for dividing block-shaped bodies of expanded materials, 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/04—Discharging the shaped articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y10T29/49817—Disassembling with other than ancillary treating or assembling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y10T29/49822—Disassembling by applying force
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53683—Spreading parts apart or separating them from face to face engagement

Definitions

  • ABSTRACT Apparatus for separating a stack of adhering lightweight concrete elements comprises upper and lower pairs of mutually opposite elongate clamping units, the units of each pair being mounted for generally horizontal relative clamping movement toward each other so that the two pairs can grip adjacent elements in the stack.
  • At least one clamping unit, preferably in the upper pair, is mounted for movement normal to the clamping direction so as to pivot the upper element relative to the adjacent lower element and separate these elements.
  • This unit, and preferably all the units comprises a multitude of single clamping jaws arranged for individual and independent movement in the clamping direction so as to compensate for possible irregularities in the elements of the stack.
  • Lightweight concrete products may be produced in the following way: Down into a casting mould a lightweight concrete-forming mass is poured which, having been made porous by means of gas generating or foaming agents for instance, is brought to bind or harden into a semiplastic more or less cheese-like consistency.
  • the casting mould mentioned frequently consists of a parallelepipedon-shaped box open upwards which advantageously may have the length 600 cm, the width 120 cm and the height 60 cm. This means that the mass cast will have its plane or its large surface oriented horizontally. When the mass, as has been said, has bound into a block of semiplastic self-bearing consistency, this block is raised on its edge, i.e.
  • the raised block may e.g. be divided by horizontal cuts only into four elements measuring 600 X 60 X 30 cm or six elements measuring 600 X 60 X 20 cm and so on. But it is possible, too, by the so-called dimension change, to divide the block into elements of quite different dimensions and ranges of application.
  • the dimension change may be carried out by making one or more slots in the block, into which slots cutting frames of varying wire distribution are then brought in. Elements of many dimensions are of course possible to produce e.g. by arranging two or more slots for the dimension change.
  • the divided block is brought into an autoclave to be cured by means of steam and to obtain its final strength.
  • the cuts dividing the block into single elements may most closely be characterized as crack indications. This is due to a phenomenon which is here called adhesion and implies that the elements stick to each other strongly enough to prevent them from being separated without anything further.
  • adhesion is particularly manifest in the downmost cuts of the block where, as is natural, the weight of the block itself provides an extra pressing-together of the elements.
  • Within the lightweight concrete technique there have appeared many methods and devices for the separating of lightweight concrete elements sticking together in the said way.
  • a device which comprises one upper and one lower pair of mutually opposite longish clamping units arranged to hold or to grip like tongs each its own of two lightweight concrete elements situated on either side of a dividing slot, one clamping unit of the upper pair being movable vertically or across the clamping direction to provide a swinging of one element relatively to the other so as to separate the elements from each other. More strictly spoken both units of the upper pair together form an upper frame box and those of the lower pair, likewise, a lower frame box, whereby one clamping unit of each pair has the shape of a rigid pressure plate covering all the length of the block and movable to and from the opposite unit, by means of hydraulic cylinders for instance.
  • the frame boxes are hinged mutually, affording the possibility of swinging the upper one relatively the lower one by means of special vertically acting pressure boxes.
  • This device worked satisfactorily inasmuch as the separating, as a consequence of the swinging movement, proceeded easily and smoothly.
  • Those investigations, however, which have lead to the present invention sometimes revealed crack formation and other non-desirable damages in elements separated by means of the device in question.
  • the reason for that has proved to be the fact that unevennesses, be they ever so small, in the sides of the elements cause the relatively great forces emanating from the straight and longish pressure plates to act unevenly along the sides of the elements, pressure strain thus occurring locally.
  • the present invention refers to a method which lacks the disadvantages described above and, besides, has several advantages as compared to earlier known methods within the field.
  • Characteristic of the method invented is that the elements are held by pairs of clamping units of which at least one in each pair consists of a multitude of single clamping jaws which when clamping, are brought to move individually or independently of each other towards the opposite clamping unit of the pair, the jaws of at least one unit during the separating operation being brought to move together or simultaneously across the clamping direction.
  • the invention also refers to a separating device for practicing the method. Characteristic of this device is that at least one of the units in the upper as well as in the lower pair of clamping units consists of a multitude of single clamping jaws arranged for moving individually or independently of each other towards the opposite clamping unit during the clamping procedure, and in that the clamping jaws of at least one clamping unit are movable together or simultaneously across the clamping direction for bringing-about said separating of the elements.
  • the expression lightweight concrete elements in this connection firstly refers to elements of aerated concrete or foam concrete, i.e. kinds of concrete obtained by using gas producing or foaming agents respectively, but it is of course also possible to adapt the invention to every other kind of lightweight concrete afflicted with problems of sticking.
  • FIG. 1 is a longitudinal partly sectional assembly view of the device on a first scale
  • FIG. 2 a somewhat enlarged cross section ll ll of FIG. 1
  • FIG. 3 a still more enlarged cross section of the most vital part of the device
  • FIG. 4, 5 and 6 show partly sectional vertical views lV IV, V V, and VI Vl respectively of FIG. 3 and FIG. 7 an extremely enlarged detail of the device.
  • FIG. 1 is a longitudinal partly sectional assembly view of the device on a first scale
  • FIG. 2 a somewhat enlarged cross section ll ll of FIG. 1
  • FIG. 3 a still more enlarged cross section of the most vital part of the device
  • FIG. 4, 5 and 6 show partly sectional vertical views lV IV, V V, and VI Vl respectively of FIG. 3 and FIG. 7 an extremely enlarged detail of the device.
  • FIG. 4 show partly sectional vertical views lV IV, V V, and VI Vl respectively of FIG. 3 and FIG. 7 an extremely enlarged detail of the device.
  • 1 is the general designation of a lightweight concrete block resting on a support 2 which may be carried by wheels for instance.
  • the block is shown divided up into two different parts or piles 3 and 4 by a dimension change slot 5, the first pile 3 in its turn having been divided into six longish elements 6 by means of horizontal cuts 7 having the nature of indications, whereas the other pile 4 has been divided into several elements 8 by horizontal as well as vertical cuts marked 9 and 10 respectively.
  • the invented device comprises a stationary stand with the general designation 1 l, composed of a number of vertical columns 12, longitudinal beams 13 and cross beams 14.
  • the beams together form a frame structure resting on the columns.
  • a carrier 15 suspended which in its turn carries one pair of upper clamping units 16 and 17 and one pair of lower ones 18 and 19. See FIGS. 2 and 3.
  • these clamping units consist of a great number of single clamping jaws, in FIG. 1 marked with a z.
  • FIGS. 3 6 To explain more clearly how the clamping jaws cooperate with the carrier 15 special reference is made here to FIGS. 3 6. From these Figures it is seen that all the clamping jaws of units 16 19 are situated each on the lower end of one of the equally numerous arms 20, 21, 22 or 23 respectively, which are essentially vertical. Thus the upper clamping jaws l6 and 17 belong together to those arms which are here called upper arms 20 and 21, while the lower clamping jaws 18 and 19 belong together to the arms 22 and 23 here called lower arms. These arms all are possible to swing or move around shafts or shaft pivots oriented horizontally or parallelly to the longitudinal direction of the carrier.
  • the arms is carried out in this case by means of telescopic bars 24 and 25 the former of which via hinges 26 mutually connects the upper arms 20 and 21 while the latter one via hinges 27 connects the upper ends of the lower arms 22 and 23 to each other.
  • the telescopic bars may suitably consist of hydraulic cylinders encompassing reciprocating pistons. The bars thus can be lengthened when the clamping jaws by turning of the arms are to be caused to move towards each other in order to grip a lightweight concrete element. Loosening of the clamping jaws is brought about by reducing the length of the bars.
  • the carrier 15 is composed of a great number of sheets 28 placed crosswise and being of a U-shaped profile. These are mutually connected by longish beams or plates 29 (FIG. 3), the structure thus becoming rigid lengthwise as well as crosswise. Inside the carrier there is arranged a U-plate 30.
  • the number of these cylinders may suitably coincide with that of the brackets to get an evenly distributed loading though it would in itself be thinkable to use only one or few hydraulic aggregates for turning the shaft.
  • the piston 45 of the hydraulic aggregate or the rod 46 of the piston is via a hinge 47 connected to an upright 48 which, like the bracket, is fixed to the shaft 43 though in this case the connection is perpendicular to the bracket. It will be evident that, when the pistons of the hydraulic aggregates are moving inwards in the cylinders, the shaft 43 will turn anti-clockwise at least by some little distance, while the brackets 42 are swinging, causing the pivots 41 with their pertaining arms 20 and clamping jaws 16 to move upwards. At that procedure all the upper clamping jaws 16 move upwards simultaneously according to the invention.
  • FIG. 3 shows now there are rubber wedges 49 on the clamping jaws 16 19 to make contact with the lightweight concrete elements.
  • the carrier 15 is movable vertically by means of two synchronized hydraulic cylinders 50 and 51.
  • the vertical movement of the carrier is controlled by a shaft 52 situated at the top of the carrier and provided both with wheels 53 running in vertical guides 54 on the hanging beams 55 and with cog wheels 56 meshing with straight cog bars 57 on the hanging beams.
  • On the carrier there are housings 58 for driving aggregates supplying power to the different parts of the device.
  • the distance between the lower clamping jaws l8 and 19 and the horizontal part of the carrier which unites both its downward shanklike parts is at least almost as long as the height of the block or pile 3. In this case the distance between said horizontal part of the carrier and the lower clamping jaws is a little longer than the height of the block.
  • a lightweight concrete block 1, already cured, is brought in, resting on the support 2, to a position under the carrier 15 and the vertical position of the latter is adjusted so as to place the upper pair of clamping jaws 16 and 17 above the cut at hand between the topmost element 6a or 8a and the next one, 6b or 8b, and to place the lower pair 18 19 under the cut of the pile in question, i.e. 3 or 4, respectively. See FIG. 2.
  • the telescopic bars 24 and 25 are elongated causing the clamping jaws of each pair to bear against the sides of the elements and to grip these.
  • the clamping jaws i z are caused to grip the upmost element 6a which revolves and is separated by turning the synchronizing shaft.
  • the carrier is brought to sink further down in order to bring the clamping jaws a h into their working positions on each side of the next-to-topmost cut in the pile 4, after which the operations described are repeated alternately until all elements or courses of elements in both piles 3 and 4 have been separated.
  • FIG. 3 illustrates an exemplary subsequent stage.
  • both piles are lifted somewhat from the support 2 to make it possible to insert pallets or similar bearing devices under them, and the piles are brought down to rest on these pallets, ready to be transported to some suitable place of storing or unloading.
  • FIG. 8 an example is given of how the described separating device may be arranged in a plant for the separating and storing of lightweight concrete elements.
  • the totality of the separating device is marked with 60.
  • 61 signifies one or more, in this case two, tracks or transport lines leading from an autoclaving or curing station to a traverser pit 62.
  • a traverser truck 64 movable to and fro laterally along rails 63 or similar.
  • rails or transport lines 65 for the support 2 which is movable longitudinally and carries the piles 3 and 4 of the lightweight concrete elements 6 and 8 respectively.
  • the traverser pit 62 For support most often plane sheets, socalled curing plates, are used.
  • the traverser pit 62 At the side of the traverser pit 62 one or more tracks 67 are arranged for the accumulating of piles.
  • the traverser pit there are one or more tracks 68 leading to one or more stores, e.g. a store 69 for reinforced elements 6 and a store 70 for unreinforced elements 8.
  • 71 signifies a store of pallets 72 of suitable sizes.
  • the plant described may of course be modified in many ways.
  • the separating device 60 may be movable instead of stationary, an economy of transport lines being gained. Further the cured elements may be taken into the separating device via the tracks 66 instead of the tracks 61, the latter thus made away with.
  • the plant normally functions in the following way:
  • the elements are taken into the separating device 60 either directly via the tracks 66 or via the tracks 61 and the traverser truck 64. They are separated in the manner described above being brought to rest on pallets 72. From the separating device the elements are brought to the stores 69 and via the traverser truck 64 and the tracks or transport lines 68.
  • the hydraulic aggregates belonging to the device here described may suitably be connected to a special operating panel from which the operations are controlled in an optional way not shown here, preferably electronically.
  • the advantages of the invented method and device are evident as the clamping forces are evenly distributed along all the length of the element because of the multitude of the clamping jaws.
  • the number of these jaws may suitably be 3 6, preferably 4, per meter.
  • Another advantage is that the device allows for the separating of blocks of difierent dimensions. This is particularly important for elements of different thickness and different profiles, e.g. tongue-and-groove elements contra plain elements.
  • a method of separating lightweight concrete elements mutually delimited by essentially horizontal cuts but adhering to each other to form at least one block of stacked multiple elements comprising the steps of causing one upper pair and one lower pair of mutually opposite elongate clamping units each to grip in a tonglike manner its respective element of two elements situated on either side of a cut, and imparting to at least one clamping unit of one pair a movement relative to the other pair, thus separating one element from the other, wherein at least one clamping unit in each pair consists of a multitude of single clamping jaws which are moved individually and independently of each other toward the opposite clamping unit to grip the respective elements, thejaws of at least one of the jawtype units being moved simultaneously across the clamping direction during the separating operation to effect said separation of one element from the other.
  • a method according to claim 2 wherein the block, after separation of all its stacked elements, is lifted by lifting the lowermost element so as to lay bare its bottom, and at least one pallet is inserted under the block, which is then lowered and brought to rest on said pallet.
  • the block comprises at least one first stack and one second stack horizontally adjacent each other and containing elements of different dimensions, and wherein in a first step the topmost element of the first stack is separated and in a second step the topmost element of the second stack is separated, after which the clamping units are controlled alternately to hold and separate elements of the different piles, the clamping units continuously moving downwardly until all elements have been separated from each other.
  • a method according to claim 1 wherein the jawtype unit which is moved across the clamping direction is one unit of the upper pair, and moves relatively to the other unit of the upper pair and both units of the lower pair so as to effect a pivotal movement of the element being separated.
  • Apparatus for separating lightweight concrete elements delimited by essentially horizontal cuts but adhering to each other to form at least one block of plural stacked elements comprising one upper pair and one lower pair of mutually opposite elongate clamping units, means mounting the units of each pair for relative clamping movement toward each other to have each pair grip in a tong-like manner a respective element of two elements situated on either side of a cut, at least one clamping unit of at least one pair being mounted for movement also across the clamping direction to bring about a pivotal movement of one element relative to the other for separating said elements from each other, at least one of the units in the upper as well as in the lower pair of clamping units comprising a multitude of single clamping jaws arranged for moving individually and independently of each other toward the opposite clamping unit during the clamping movement, the clamping jaws of at least one of said jaw-type clamping units being movable together and simultaneously across the clamping direction for effecting said separating of the elements.
  • both units of each pair consist of a multitude of single clamping jaws
  • said across-movable unit comprises one of the units of the upper pair which moves across the clamping direction relative to the other unit of the upper pair and relative to both units of the lower pair.
  • each of said clamping jaws is mounted on a pivotally mounted arm, the arms for the across-movable upper clamping jaws being mounted on pivots free of adjacent pivots on which are mounted the arms for the adjacent lower clamping jaws.
  • Apparatus according to claim 8 wherein the arms of all the clamping jaws which are movable across the clamping direction are connected mutually by a common synchronizing shaft for effecting the simultaneous movement of the clamping jaws across the clamping direction.
  • Apparatus according to claim 9 wherein the arms of the across-movable clamping jaws are connected to the synchronizing shaft via a linkage for effecting the simultaneous movement of the arms across the clamping direction.
  • a device wherein the synchronizing shaft is rotatable and said linkage comprises a bracket fixed to the synchronizing shaft and connected to said pivots around which said across-movable arms are mounted so as to move said pivots in said across direction.
  • each of the arms consists of at least two mutually connected adjacent struts, the arm of each upper clamping jaw being mounted between the struts which together form the arm of a lower clamping jaw.
  • Apparatus according to claim 13 wherein the clamping jaws and their pivotal arms are carried by an elongate carrier of essentially U-shaped cross section, and means mounting the carrier for vertical movement.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • De-Stacking Of Articles (AREA)
  • Load-Engaging Elements For Cranes (AREA)
US00229057A 1971-02-24 1972-02-24 Method of and apparatus for separating lightweight (aerated) concrete elements Expired - Lifetime US3758934A (en)

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SE2352/71A SE346249B (pt) 1971-02-24 1971-02-24

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JP (1) JPS5513886B1 (pt)
AR (1) AR194833A1 (pt)
AT (1) AT310640B (pt)
BE (1) BE779824A (pt)
BR (1) BR7201036D0 (pt)
CA (1) CA945531A (pt)
CH (1) CH540098A (pt)
DE (1) DE2159714C3 (pt)
FR (1) FR2126350B1 (pt)
IT (1) IT947698B (pt)
SE (1) SE346249B (pt)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5336040A (en) * 1989-10-04 1994-08-09 Focke & Co. Process and apparatus for grasping lifting and moving stacks of blanks for cigarette packs
US5513945A (en) * 1993-12-31 1996-05-07 Hebel Aktiengesellschaft Apparatus for removing the upper waste layer resulting in cutting plastic porous concrete blocks or the like
US20020182050A1 (en) * 2001-05-14 2002-12-05 Hart Colin R. Stack transfer device
WO2005080056A1 (de) * 2004-02-23 2005-09-01 Xella Porenbeton Holding Gmbh Vorrichtung zum trennen von dampfgehärteten baustoffblöcken
JP2007176675A (ja) * 2005-12-28 2007-07-12 Miyake Seisakusho:Kk 弁当箱配列搬送装置
CN103009037A (zh) * 2012-12-14 2013-04-03 太原理工大学 一种用于带式输送机胶带的更换装置及其更换方法
CN103568111A (zh) * 2012-08-04 2014-02-12 钟祥市圣福机械制造有限公司 全自动砌块切割机
CN104385453A (zh) * 2014-09-18 2015-03-04 瑞安市瑞港机械有限公司 加气混凝土多功能砌块分离机
CN106142328A (zh) * 2015-04-28 2016-11-23 中节能东方双鸭山建材设备有限公司 砌块分离机

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IT1145770B (it) * 1981-05-22 1986-11-12 G A R Bo Snc Di Guerzoni Aless Apparato per il computo delle bottiglie presenti e/o quelle mancanti all'interno di una pila di casse d'imballaggio
DE4340785C2 (de) * 1993-11-30 1998-11-26 Ahg Baustoffhandelsgesellschaf Verfahren zur Herstellung von Bauelementen aus Porenbeton
DE4403228C1 (de) * 1994-02-03 1995-05-11 Hebel Ag Verfahren und Vorrichtung zum reihenweisen Auseinanderrücken von quaderförmigen, plastischen Porenbetonkörpern
DE19905988B4 (de) * 1999-02-12 2004-03-04 Ytong Ag Vorrichtung zum Trennen von dampfgehärteten Leichtbetonkörpern
DE10019726C2 (de) * 2000-04-20 2002-08-29 Dorstener Maschf Ag Verfahren und Trennvorrichtung zum Trennen einzelner Porenbetonkörper eines entlang von Trennflächen geschnittenen Porenbetonkuchens
DE10063278C5 (de) * 2000-12-19 2006-05-24 Xella Technologie- Und Forschungsgesellschaft Mbh Vorrichtung zum Trennen von aneinander anhaftenden Lagen eines Porenbetonblocks
CN103029207A (zh) * 2012-12-07 2013-04-10 东岳机械集团有限公司 一种基于蒸压加气砌块智能掰板机
CN110253748B (zh) * 2019-06-02 2024-04-26 江苏三工建材科技有限公司 一种加气混凝土掰板机
CN114589824B (zh) * 2021-11-01 2024-02-02 青岛高测科技股份有限公司 硅棒切割系统的切割装置及硅棒切割系统

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5336040A (en) * 1989-10-04 1994-08-09 Focke & Co. Process and apparatus for grasping lifting and moving stacks of blanks for cigarette packs
US5513945A (en) * 1993-12-31 1996-05-07 Hebel Aktiengesellschaft Apparatus for removing the upper waste layer resulting in cutting plastic porous concrete blocks or the like
US7462012B2 (en) * 2001-05-14 2008-12-09 F.R. Drake Company Stack transfer device
US20020182050A1 (en) * 2001-05-14 2002-12-05 Hart Colin R. Stack transfer device
US20090087297A1 (en) * 2001-05-14 2009-04-02 Hart Colin R Stack transfer device
WO2005080056A1 (de) * 2004-02-23 2005-09-01 Xella Porenbeton Holding Gmbh Vorrichtung zum trennen von dampfgehärteten baustoffblöcken
CN1921993B (zh) * 2004-02-23 2011-08-10 凯莱建材有限公司 用于分离蒸汽养护的建筑材料砌块的分离装置
JP2007176675A (ja) * 2005-12-28 2007-07-12 Miyake Seisakusho:Kk 弁当箱配列搬送装置
JP4658799B2 (ja) * 2005-12-28 2011-03-23 株式会社美幸軒 弁当箱配列搬送装置
CN103568111A (zh) * 2012-08-04 2014-02-12 钟祥市圣福机械制造有限公司 全自动砌块切割机
CN103009037A (zh) * 2012-12-14 2013-04-03 太原理工大学 一种用于带式输送机胶带的更换装置及其更换方法
CN103009037B (zh) * 2012-12-14 2015-03-04 太原理工大学 一种用于带式输送机胶带的更换装置及其更换方法
CN104385453A (zh) * 2014-09-18 2015-03-04 瑞安市瑞港机械有限公司 加气混凝土多功能砌块分离机
CN106142328A (zh) * 2015-04-28 2016-11-23 中节能东方双鸭山建材设备有限公司 砌块分离机

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DE2159714A1 (de) 1972-09-07
FR2126350B1 (pt) 1976-06-11
DE2159714C3 (de) 1985-05-30
DE2159714B2 (de) 1978-12-07
SE346249B (pt) 1972-07-03
AT310640B (de) 1973-10-10
FR2126350A1 (pt) 1972-10-06
CH540098A (de) 1973-08-15
BR7201036D0 (pt) 1973-07-03
AR194833A1 (es) 1973-08-24
IT947698B (it) 1973-05-30
JPS5513886B1 (pt) 1980-04-12
BE779824A (fr) 1972-06-16
CA945531A (en) 1974-04-16

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