EP0320504B1 - Procede et dispositif de fabrication de dalles de couverture de toits a bride transversale integralement faconnee - Google Patents

Procede et dispositif de fabrication de dalles de couverture de toits a bride transversale integralement faconnee Download PDF

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Publication number
EP0320504B1
EP0320504B1 EP87904041A EP87904041A EP0320504B1 EP 0320504 B1 EP0320504 B1 EP 0320504B1 EP 87904041 A EP87904041 A EP 87904041A EP 87904041 A EP87904041 A EP 87904041A EP 0320504 B1 EP0320504 B1 EP 0320504B1
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EP
European Patent Office
Prior art keywords
station
compacting
cavity
pallets
compression
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
EP87904041A
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German (de)
English (en)
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EP0320504A1 (fr
Inventor
Günter Jöst
Manfred Weisweiler
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Braas GmbH
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Braas GmbH
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Filing date
Publication date
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Priority to AT87904041T priority Critical patent/ATE80829T1/de
Publication of EP0320504A1 publication Critical patent/EP0320504A1/fr
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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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
    • B28B1/16—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted for producing layered 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/10—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form each charge of material being compressed against previously formed body
    • 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
    • B28B5/028—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 definite length, e.g. succession of moving pallets, and being continuously fed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0088—Moulds in which at least one surface of the moulded article serves as mould surface, e.g. moulding articles on or against a previously shaped article, between previously shaped articles

Definitions

  • the invention relates to a method for producing roofing tiles with a transverse flange formed on the underside of the tile, wherein a continuous layer of curable plastic material is applied and applied to sub-molds, each of which has a recess for forming the transverse flange and which are fed to a coating station in a continuous strand Forming roller and smoother are compacted separately in the depressions and, if necessary, profiled, and the compacted material layer is cut in a cutting station to form roof covering plate moldings, which are then hardened, if appropriate at elevated temperature, and then removed from the mold.
  • the invention further relates to a device which is particularly suitable for carrying out the method.
  • a device of this type is known from US Pat. No. 3,122,812.
  • the depressions provided for the transverse flange in the sub-molds and the coating of these sub-molds with a continuous fresh concrete layer take place simultaneously when the sub-molds pass through a coating station.
  • the fresh concrete slips under the effect of its own weight from a filling funnel into the depressions of the lower molds and is compacted as it passes through a shaping roller.
  • targeted compression can also be carried out within the depressions.
  • an elongated compacting tool aligned transversely to the conveying direction is inserted into the depression through the continuous fresh concrete layer already produced on the lower molds and is intended to compact the fresh concrete there within the depression.
  • transverse parts are, for example, the so-called lobes on a pent roof cover plate or an eaves plate and the end flange on the end ridge caps.
  • transversely extending hanging strips of greater length are also required on roofing slabs intended for particularly steep roof pitches. All these transversely extending molded parts, such as rags, flanges, strips, webs and the like are referred to as a cross flange.
  • roofing panels which differ in terms of the length of the respective transverse flange should also be able to be produced without any significant conversion work.
  • the object for the method is achieved in that a metered amount of the plastic material is first introduced into the depression of the respectively supplied lower mold in a loading station, and then compression of the plastic material located in the depression in the lower corners of the in a first compression station Deepening is carried out, then the remaining material in the deepening is compacted in a second compacting station, and then the continuous material layer is applied to the lower mold in the coating station.
  • the method is suitable in the same way for the production of flat roofing panels as for profiled roofing panels, on the underside of which a cross flange is formed.
  • the roof covering panels can consist of materials typically provided for this purpose, such as concrete, ceramic masses and comparable artificial stone materials.
  • the invention will be described in particular with reference to the production of profiled pent roof end plates made of concrete, without the intention of restricting the invention.
  • the filling of the depression in the lower molds with plastic material for producing the transverse flange and, on the other hand, the application of the continuous layer of material to the lower molds is separated from one another in terms of time and space.
  • At least two different measures are provided for compacting the plastic material introduced into the depression.
  • the plastic material is then compressed in the lower corners of the depression in a first compression station, and the remaining material in the depression is then compressed in a second compression station.
  • the feed station is expediently overfilled in order to take into account the reduction in the volume of material that occurs during compression. As tests have shown, part of the material located above the depression and also part of the material introduced into the depression are displaced onto the lower mold next to the depression during compression. For complete filling of the depression after the first compression, it is therefore provided that material located on the lower mold next to the depressions from the second compression station is introduced into the depressions by means of a scraper device.
  • high viscosity material such as fresh concrete and the like
  • the sub-molds with larger depressions after the compaction of the material in the lower corners of the depressions provide a one-time compaction of the remaining material not sufficient to achieve the required strength and pore tightness of the entire lower part of the cross flange. It is therefore expedient that when using sub-molds with larger depressions, after the compression of the plastic material in the lower corners of the depression, in an additional compression station, a pre-compression of the remaining material in the depression is carried out.
  • roofing slabs that differ in the length of the transverse flange.
  • sub-molds with corresponding depressions are used, the size of the depression of the respective sub-mold is detected by means of one or more sensors, and depending on the sensor signal, a correspondingly metered amount of plastic material is introduced into the depressions.
  • the device for the production of roofing panels with a cross flange formed on the underside of the panel contains a coating station which can be supplied with hardenable plastic material to form a continuous layer of material on a continuous strand of displaceable lower mold driven by a conveyor, each having a recess to form the cross flange have, further a compression station for the compression of the material located in the depressions, as well as a shaping roller and a smoother for the compression and optionally profiling of the continuous material layer located underneath on the lower molds, and also a cutting station for cutting the continuous, compressed material layer into individual roofing tile shaped pieces.
  • a first compression station is provided behind a loading station, in which a predetermined amount of plastic material is introduced into the recess of the respective lower mold, which has two compacting tools which are arranged in such a way that they are adapted to the advance of the lower molds Movement into deepening, compress the plastic material located in the lower corners of the depression, at least one further compression station is provided, in which at least one compression tool, adapted to the advance of the submoulds, can be moved in and out of the depression of the relevant subform in order to compress it of the remaining material in the depression, and then the coating station is provided for applying the continuous layer of material to the lower molds.
  • the intended loading station is expediently assigned a rotatably arranged, multi-vane cell wheel, by the rotation of which in sections, a certain amount of plastic material can be introduced into the depression of the respectively supplied lower mold.
  • Each compaction tool of the first compaction station preferably has a plunger which is to be fed on a partial circular path of a lower corner of the depression via a leg which is angled or bent with it and which is pivotally fastened in the compression station at its free end.
  • this first compression station contributes significantly to improving the strength and dimensional stability of the transverse flange formed on the underside of the plate.
  • the free ends of the legs of the compression tools can be fixed at different heights in the compression station. This ensures that the compression tools can also carry out the compression of the plastic material in the corner areas with larger recesses.
  • a second compression station is provided following this first compression station, which has an elongated compression tool oriented transversely to the conveying direction, which essentially fills the cross section of the depression, thereby enabling compression of the entire material in the depression.
  • a scraper device can be provided in front of the second compression station, the scraper edges of which are essentially flush with the upper side of the lower molds. Refilling of the depression with plastic material is thus achieved before passing through the second compression station.
  • the device according to the invention preferably has an additional compression station, which is arranged between the first compression station and the stripper device, as seen in the conveying direction of the lower molds.
  • This compression station serves as a precompressor and is only actuated when a lower mold with a larger depression for producing a roof covering plate with a transverse flange of greater length passes through this compression station.
  • this pre-compressor also has an elongated compression tool oriented transversely to the conveying direction on, which essentially fills the cross section of the recess.
  • Pneumatic or hydraulic piston-cylinder units are advantageously provided as the actuating device for the compression tools.
  • the additional compression station which is arranged in front of the stripping device and the second compression station, it is advantageous if, seen in the conveying direction of the sub-molds, a further stripping device is provided in front of the additional compression station, the stripping edges of which are essentially flush with the top of the sub-molds. This ensures that the depression is refilled before it passes through the additional compression station.
  • roof covering panels with a cross flange of different lengths should be able to be produced with the device according to the invention.
  • sub-molds are provided within a sub-mold strand that differ in the size of their depressions.
  • At least one sensor is arranged adjacent to the conveying path of the lower molds, which detects the size of the recess of the respective lower mold and feeds the sensor signals generated thereby to the loading station and one or more compression stations .
  • the sensor signals are used to control the amount of plastic material at the loading station, which is introduced into the recess of the respectively supplied lower mold. For example, depending on the sensor signal, the cellular wheel performs one or more rotations in sections, depending on whether the lower molds have a larger or smaller depression.
  • the sensor signals are used to ensure the correct height of the free ends in the first compression station adjust the leg of the compaction tools so that the plungers of these compaction tools can penetrate into the lower corner region of the depression of the lower mold fed to each of these stations.
  • the sensor signals also serve to selectively actuate the additional compression station if there is a lower mold with a larger recess there.
  • the conveying device is designed for intermittent advancement of the lower molds and has a substantially reversible, pneumatic or hydraulic piston-cylinder arrangement, by means of which a feed carriage engaging the secondary molds can be displaced a long way in the conveying direction.
  • a conveyor of this type is known from German Offenlegungsschrift 29 45 553. With reference to this laid-open document, the content thereof - insofar as it is helpful or necessary to explain the present invention - should also be made part of the present documents.
  • the method according to the invention is suitable both for the production of flat and profiled roofing tiles, on the underside of which a cross flange is molded. It will preferably be used in the manufacture of pent roof end panels, eaves panels and end ridge caps.
  • profiled roofing slabs sub-molds with appropriate profiling for the slab part are to be provided, and then, if necessary matched wipers except the corresponding shaping roller and the smoother required.
  • the method is also readily adaptable to the various known materials for the production of roofing tiles.
  • it is intended for the production of concrete roofing slabs.
  • FIG. 1 shows a perspective view - as part of an overall system for the manufacture of pent roof tiles - a section of a device 1 according to the invention with loading station 20, first compression station 40, second compression station 60, additional compression station 70, coating station 78 and cutting station 79, with better visibility the conveyor 10 at the inlet 2 of the device 1 some sub-molds 7, 7 'with sub-mold supports 6 are omitted.
  • the lower molds 7, 7 'for the production of loft roof tiles 90, 90' are placed in front of or at the inlet 2 on the lower mold supports 6 which run in an uninterrupted strand and with this from the conveyor unit 10 in the conveying direction 4 through the work stations attached to the frame 3 of the device 1 pushed, namely the loading station 20, the first compression station 40, a stripping device 85, the additional compression station 70, a stripping device 80, the second compression station 60, the coating station 78 and the cutting station 79.
  • the conveyor device 10 includes a horizontally operating piston-cylinder arrangement with a cylinder 11, on the piston 12 of which a feed slide 13 is attached.
  • the feed slide 13 bears against a lower mold support 6.
  • the further structure of the conveyor device 10 for the cyclical advancement of the lower molds 7, 7 ' is known from German Offenlegungsschrift 29 45 553.
  • At least one sensor 5 is attached to the frame 3 of the device 1, which detects and detects the size of the depression 8, 8 'of the lower mold 7, 7' shown in FIG Generates a signal that is fed to the individual workstations.
  • the lower mold supports 6 with the lower molds 7, 7 'placed thereon are guided in a lower mold guide 15 as they pass through the device 1, such as is explained in detail below with reference to FIG. 3.
  • the loading station 20 shown in FIGS. 2 and 3 is fixedly attached to the frame 3 and has a filling funnel 21, a filling box 22, a rotatably arranged, multi-wing cellular wheel 24, a first, pneumatically operated piston-cylinder arrangement 31, 30 and one second, pneumatically actuated piston-cylinder arrangement 33, 32 with appropriate fastening and linkage.
  • the inner width b of the filling box 22 is chosen so that an intermediate space between two wings 25 of the cellular wheel 24 contains the necessary amount of concrete 35 for the formation of a short desk cloth 92 shown in FIG. 8 with the length l 1.
  • the four-winged cellular wheel 24 in the illustration is rotatably supported by a continuous shaft 27 with a freewheel 28 in bearing plates 23 which are fastened on both sides of the filling box 22.
  • the cellular wheel 24 is rotated in sections by the cylinder 30, which is only shown in FIG. 3 and can be pivoted on the frame 3 in the conveying direction 4, the piston 31 of which engages the freewheel 28 via a lever 29, which in turn acts on the one from the filling box 22 protruding part of the shaft 27 sits.
  • a further cylinder 32 is arranged on the filling box 22 above the cell wheel 24, the piston 33 of which extends down to a wing 26 of the multi-wing cell wheel 24 protruding horizontally from the filling box 22.
  • the filling box 22 of the loading station 20 is from a - not shown - material conveyor belt, which is arranged above the device 1, with hardenable plastic material 34, in the present case with concrete 34, for the production of the transverse flanges or desk cloths shown in FIGS. 8 and 9 92, 92 'of the pent roof end plates 90, 90'.
  • the four-bladed cellular wheel 24 is rotated by 90 ° in the direction of rotation 36 when the piston 31 of the cylinder 30 is extended, since the freewheel 28 on the shaft 27 locks in the rotational direction 36 and thus entrains the shaft 27 of the four-bladed cellular wheel 24.
  • the freewheel 28 becomes effective so that the shaft 27 is not rotated.
  • a wing 26 protruding horizontally from the filling box 22 runs onto the piston 33 of the cylinder 32 which is extended downward as a stop.
  • the retracted position of the piston 33 is shown in dashed lines in FIG. 2.
  • the sensor 5 shown in FIG. 1 detects a lower mold 7 'with a recess 8' for a long desk flap 92 'shown in FIG. 9 with the greater length 12, then the rotation of the four-winged cellular wheel 24 by the cylinder 30 is twice carried out, so that twice the amount of concrete is poured into the cavity 8 'for the long desk cloth 92' onto the lower mold 7 '.
  • the recess 8 'with the depth t2 for the long desk cloth 92' is indicated in FIGS. 2 and 3 with the lower, dashed line.
  • the depression 8 with the depth t 1 for the short desk lobe 92 is shown in Fig. 2 and indicated in Fig. 3 with the upper dashed line.
  • the lower mold 7, 7 ' is located on a lower mold support 6 which is guided in the vertical guide strips 16 and on the horizontal support beam 17 of the lower mold guide 15 and is displaced in the conveying direction 4.
  • the first compression station 40 shown in FIGS. 4 and 5 is fastened to the frame 3 of the device 1 via guide columns 41. At their upper end facing away from the frame 3, the guide columns 41 are connected to one another via a crossbar 42.
  • a height-adjustable part 45 of the corner compressor 40 is held on the guide columns 41 so as to be movable up and down.
  • guide sleeves 46 encompassing the guide columns 41, to which the adjustable part 45 is fastened.
  • the guide sleeves 46 are connected at their upper end facing away from the frame 3 via a lifting beam 47, on which the piston 44 of a lifting cylinder 43 attached to the cross beam engages.
  • a bearing 48 is fixedly attached, on each of which a compression tool 50 is pivoted upwards and downwards is.
  • a vertically operating actuating device 53 is used for the compulsory pivoting of the compacting tools 50, the cylinder 54 of which is pivotally mounted laterally on bearing blocks 56 fixedly attached to the walking beam 47.
  • Each compression tool 50 consists essentially of an angular arrangement of a plunger 52 on an angled or bent leg 51.
  • the leg 51 is pivoted at its free end about the axis 49 on the bearing 48.
  • the piston rod of the piston 55 of the actuating device 53 engages approximately in the middle of the leg 51.
  • the recess 8, 8 'of the lower mold 7, 7' in the loading station 20 has been filled with the necessary amount of concrete 35 and this lower mold 7, 7 'is now on the first compression station 40, so that the compression tools 50 can move into the recess 8, 8 ', each piston 55 is moved out of the associated cylinder 54 and the compression tools 50 on a circular path around the bearing pin 49 into the recess 8, 8' the lower mold 7, 7 'pivoted into it.
  • at least the plunger 52 of the compacting tool 50 is forcibly pressed into the plastic mass or concrete 35 located in the depression 8, 8 'and pushes this or this into the adjacent lower corner of the depression 8, 8' in a stamp-like effect .
  • the sensor 5 has detected a lower mold 7 with a recess 8 with the depth t 1 for a short desk flap 92 shown in FIG. 8, then when this lower mold 7 enters the first compression station 40, the adjustable part 45 of the first compression station 40 is moved by the Lift cylinder 43 brought into the upper position shown in FIG. 4. However, the sensor 5 has a lower mold 7 'with a larger recess 8' with the depth t2 for a long desk cloth 92 'shown in FIG. 9, so when this lower mold 7' enters the first compression station 40, the adjustable part 45 of the first compression station 40 brought by the lifting cylinder 43 in the lower position shown in FIG. 5.
  • the lower mold 7, 7 ' is indicated by dashed lines in FIGS. 4 and 5.
  • a second compression station 60 shown in FIG. 6 is attached to the frame 3 of the device 1 by a frame 65.
  • This frame 65 belongs to the second compression station 60, on the upper cross member of which a vertically operating actuating device 62 is attached.
  • the compression tool 61 preferably has external dimensions which are essentially matched to the internal dimensions of the cross section of a depression 8, 8 ′, so that the compression tool 61 moves the piston 64 out of the cylinder 63 into the Depression 8, 8 'of the lower mold 7, 7' arrived at the second compression station 60 and can compact the plastic mass (concrete) therein.
  • the lower mold 7, 7 ' is indicated here by dashed lines.
  • the compression tool 61 When the depression 8, 8 'of the lower mold 7, 7' has reached below the compression tool 61 of the second compression station 60, the compression tool 61 is moved into the depression 8, 8 'by extending the piston 64 out of the cylinder 63, which inevitably leads to a full-surface compression of the material located in the recess 8, 8 'leads. After completion of the compression work, the compression tool 61 is pulled out of the recess 8, 8 ′ again by pulling the piston 64 into the cylinder 63 and returned to its rest position, indicated by dashed lines.
  • an additional pre-compression may be expedient.
  • an optionally operable additional compression station 70 - shown in FIG. 7 - is preferably provided. This additional compression station 70 can be designed in the same way as the second compression station 60 explained above with reference to FIG. 6.
  • the sensor 5 detects a lower mold 7 with the depth t 1 of the recess 8, so the additional Compression station 70 not activated.
  • the lower mold 7 passes through this additional compression station 70 without the compression tool 71 carrying out a pre-compression work.
  • the sensor 5 detects a lower mold 7 'with a larger depression 8' with the depth t2, the additional compression station 70 is activated.
  • the actuating device 72 which consists of the piston-cylinder arrangement 74, 73, and carries out a pre-compression work there.
  • the compression tool 61 is then moved down to the upper position shown in FIG. 6 in order to carry out the final compression work.
  • both the plastic mass is sufficiently compressed in a larger depression 8 'with the depth t 2 as in a depression 8 with the depth t 1.
  • a stripper device 80 is provided in front of the second compression station 60.
  • a scraper device 80 preferably includes a scraper plate 81 which is fastened to the frame 3 of the device 1 by means of brackets 82, the lower edge of which is designed as a scraper edge 83, the profile of which is adapted to the profile of the upper side of a lower mold 7, 7 '.
  • the scraper edge 83 of the scraper plate 81 meshes over the top of the lower mold 7, 7 'and presses while passing through the lower mold 7, 7 'between the additional compaction station 70 and the second compaction station 60, the precompression carried out on the upper side of the subform 7' by the pre-compaction carried out on the subforms 7 'for the production of long desk cloths 72' back into the recess 8 '.
  • a further wiper device 85 is provided after the first compression station 40.
  • This further scraper device 85 is constructed identically to the already described scraper device 80, wherein a scraper plate 86 is fastened to the frame 3 of the device 1 by means of brackets 87, the scraper edge 88 of which also combs over the upper side of the lower mold 7, 7 ′ when the latter is from the first Compression station 40 is moved to the additional compression station 70 and thereby presses the concrete worked out during the corner compaction in the first compression station 20 from the depression 8, 8 'of the lower mold 7, 7', as well as the concrete in the loading station 20 above the depression 8, 8 'deposited concrete in this recess 8, 8'.
  • the coating station 78 usually includes a shaping roller (not shown) and a straightener (not shown). Under the pressure of Shaping roller and smoother, the material layer to form the plate part is pressed against the material already in the cavity 8, 8 '.
  • a cutting station 79 and a drying station are connected to the coating station 78 in a manner known per se.
  • the construction and mode of operation of the coating station 78, the cutting station 79 and a drying station are known in the art; i.a. can be referred to DE-PS 22 52 047 and / or to DE-OS 35 22 846.
  • Fig. 8 shows a schematic, perspective view of a pent roof end plate 90 made of concrete according to the inventive method on the device according to the invention, which consists of a plate body 91 and a short desk flap 92 with the length l1.
  • the desk cloth 92 extends across the entire width of the plate body 91 and normally has a length l 1 of approximately 73 to 83 mm from the top of the plate body 91.
  • FIG. 9 shows a schematic, perspective illustration of a pent roof end plate 90 'made of concrete using the method according to the invention on the device according to the invention, which consists of a plate body 91' and a long desk flap 92 'for special requirements, for example in the case of extremely steep pent roofs the length l2.
  • the desk flap 92, 92 ' has a conical cross section in both examples.
  • the thickness at the upper end of the desk tab 92, 92 ', that is on the underside of the plate body 91, 91' is 45 to 50 mm and at its lower end 23 to 28 mm.
  • the material thickness of the plate body 91, 91 ' is usually 10 to 13 mm.
  • the desk flap 92, 92 ' is located on the top edge of a desk top cover plate 90, 90', the bottom edge of which may have, for example, a rounding or bevel produced by material compression, as described in detail in DE-OS 35 22 846.
  • the basic structure of a pent roof cover plate is known from German patent 30 15 916. Both on the plate body 91, 91 'and on the desk flap 92, 92' there is a covered edge section 93, 93 'with a side fold 94, 94' and a covering edge section 95, 95 'with a - for overlapping connection with the edges of the desk roof end plates to be arranged adjacent. not shown - cover fold.
  • the lobe 92, 92' protruding from it approximately at right angles is formed, which has an opening 96, 96 'in its covered edge 93, 93' for receiving a fastening means, not shown, such as a screw , Nail, etc.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Road Signs Or Road Markings (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Coating Apparatus (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Body Structure For Vehicles (AREA)

Claims (18)

  1. Procédé de fabrication de dalles de couverture de toits (90; 90') avec sur le côté inférieur de la dalle une bride transversale intégralement façonnée (92; 92'), une couche continue d'un matériau plastique durcissable étant déposée sur des palettes (7; 7') présentant chacune une cavité (8; 8') pour la formation de la bride transversale (92; 92') et amenées à une station d'enduction (78) en une série continue, laquelle couche est séparément densifiée dans les cavités (8; 8') au moyen de cylindre de modelage et de lissoir et le cas échéant également profilée, la couche de matériau densifée est découpée en pièces façonnées de dalles de couverture à une station de découpage (79), celles-ci étant ensuite durcies, le cas échéant à température élevée, puis sorties des moules,
    caractérisé en ce que
    dans une station de chargement (20), une quantité dosée de matériau plastique est tout d'abord déposée dans la cavité (8; 8') de la palette respectivement amenée (7; 7'), qu'ensuite une densification du matériau plastique se trouvant dans la cavité (8; 8') est réalisée dans une première station de densification (40) dans les coins inférieurs de la cavité (8; 8'), puis que dans une deuxième station de densification (60) est effectuée une densification du matériau restant dans la cavité (8; 8') et qu'ensuite, dans la station d'enduction (78) la couche de matériau est déposée sur la palette (7; 7').
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le matériau se trouvant à côté de la cavité (8; 8') sur la palette (7; 7') est mis dans la cavité (8; 8') avant la deuxième station de densification (60) à l'aide d'un dispositif de raclage (80).
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    en utilisant des palettes (7; 7') avec de plus grandes cavités (8; 8'), à la suite de la densification du matériau plastique dans les coins inférieurs de la cavité (8; 8') une densification préalable du matériau restant dans la cavité (8; 8') a lieu dans une station de densification supplémentaire (70).
  4. Procédé selon la revendication 3,
    caractérisé en ce que
    à côté de la cavité (8; 8') le matériau restant se trouvant sur la palette (7; 7') est déposé dans la cavité (8; 8') avant la station de densification supplémentaire (70) à l'aide d'un dispositif de raclage (85).
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce que
    pour la fabrication de dalles de couverture de toits avec une bride transversale de différente longueur (92; 92') en employant des palettes (7; 7') avec des cavités (8; 8') appropriées, la taille de la cavité (8; 8') de la palette correspondante (7; 7') est enregistrée au moyen d'un ou plusieurs détecteurs (5), et que suivant le signal du détecteur, une quantité de matériau plastique dosée de façon appropriée est déposée dans la cavité (8; 8').
  6. Dispositif de fabrication de dalles de couverture de toits avec une bride transversale (92; 92') intégralement façonnée sur le côté inférieur de la dalle, avec une station d'enduction (78) pouvant être approvisionnée avec du matériau plastique durcissable pour la formation d'une couche continue de matériau sur une série continue de palettes (7; 7') pouvant être déplacées et entraînées par un convoyeur, ces dernières présentant respectivement une cavité (8; 8') pour la formation de la bride transversale, d'autre part avec au moins une station de densification (40) pour densifier le matériau se trouvant dans les cavités (8; 8') de même qu'avec un cylindre de modelage et un lissoir pour densifier et profiler le cas échéant la couche de matériau défilant au-dessous sur les palettes (7; 7'), et en outre avec une station de coupe pour découper la couche de matériau continu densifiée en différentes briquettes de dalles de couverture,
    caractérisé en ce que
    derrière une station de chargement (20) dans laquelle une quantité prédéterminée de matériau plastique est déposée dans la cavité (8; 8') des palettes respectives (7; 7'), une première station de densification (40) est prévue qui présente deux outils de densification (50), qui sont disposés de telle manière qu'au cours d'un mouvement adapté à l'avance des palettes (7; 7') et rentrant dans la cavité (8; 8') ils densifient le matériau plastique se trouvant dans les coins tout au fond de la cavité (8; 8'), que dans au moins une autre station de densification (60; 70) dans laquelle au moins un outil de densification (61; 71), adapté à l'avance des palettes (7; 7') peut être introduit dans la cavité (8; 8') et en être ressorti pour produire une densification du matériau restant dans la cavité (8; 8'), et qu'ensuite la station d'enduction (78) est prévue pour déposer la couche de matériau continue sur les palettes (7; 7').
  7. Dispositif selon la revendication 6,
    caractérisé en ce qu'à
    la station de chargement (20) est adjointe de façon orientable une roue cellulaire (24) à plusieurs ailes, par la rotation de laquelle, de section en section, une quantité déterminée de matériau plastique peut être introduite dans la cavité (8; 8') de chaque palette (7; 7') se trouvant amenée.
  8. Dispositif selon la revendication 6,
    caractérisé en ce que
    chaque outil de densification (50) présente un pilon (52) qui doit être introduit, suivant une trajectoire circulaire partielle, dans un coin au fond de la cavité (8; 8') par l'intermédiaire d'une branche (51) recourbée ou formant un angle et lui étant reliée, laquelle branche est fixée en son extrémité libre de façon pivotable dans la première station de densification (40).
  9. Dispositif selon la revendication 8,
    caractérisé en ce que
    les extrémités libres de la branche (51) des outils de densification (50) sont fixables dans la première station de densification (40) à une hauteur variable.
  10. Dispositif selon l'une des revendications 6 à 9,
    caractérisé en ce que
    une deuxième station de densification (60) est prévue qui présente un outil de densification allongé (61), orienté transversalement par rapport à la direction du transport (4), lequel outil remplit pour l'essentiel la coupe transversale de la cavité (8; 8').
  11. Dispositif selon la revendication 10,
    caractérisé en ce que,
    vu dans le sens du transport (4) des palettes (7; 7'), avant la deuxième station de densification (60), un dispositif de raclage (80) est prévu dont les arêtes de raclage (83) s'alignent essentiellement sur le côté supérieur des palettes (7;7').
  12. Dispositif selon la revendication 11,
    caractérisé en ce que,
    vu dans le sens du transport (4) des palettes (7; 7'), entre la première station de densification (40) et le dispositif de raclage (80), une station de densification supplémentaire (70) actionnable au choix est disposée qui sert à la densificaiton préalable, qui présente un outil de densification (71) allongé et en travers par rapport au sens du transport (4) qui remplit la coupe transversale de la cavité (8; 8').
  13. Dispositif selon une des revendications 6 à 12,
    caractérisé en ce que
    des unités cylindre-piston (55; 54; 64; 63; 74; 73) hydrauliques ou pneumatiques sont prévues en tant que dispositif d'actionnement (53; 62; 72) pour les outils de densification (50; 61; 71).
  14. Dispositif selon la revendication 12,
    caractérisé en ce que,
    vu dans le sens du transport (4) des palettes (7: 7'), avant la station supplémentaire de densification (70), un autre dispositif de raclage (85) est prévu dont les arêtes de raclage (88) s'alignent essentiellement sur le côté supérieur des palettes (7; 7').
  15. Dispositif selon une des revendications 6 à 14,
    caractérisé en ce que,
    dans une série de palettes, des palettes (7; 7') sont prévues qui diffèrent quant à la grandeur de leur cavité (8; 8').
  16. Dispositif selon une des revendications 6 à 15
    caractérisé en ce que,
    au voisinage de la bande transporteuse de palettes (7; 7'), au moins un détecteur (5) est placé qui saisit la grandeur de la cavité (8; 8') de la palette respective (7;7') et que les signaux de détecteur qui se produisent alors peuvent être amenés à la station de chargement (20) de même qu'à une ou plusieurs stations de densification (40; 60; 70).
  17. Dispositif selon une des revendications 6 à 16,
    caractérisé en ce que
    le dispositif de convoyage est construit pour une avance périodique des palettes (7; 7') et présente un arrangement piston-cylindre (12; 11) hydraulique ou pneumatique à renversement de marche, par lequel un chariot d'avance (13) portant sur les palettes (7; 7') est déplaçable sur une portion importante dans le sens du transport (4).
  18. Dispositif selon la revendication 17,
    caractérisé en ce que
    la station de chargement (20) et la station de densification (40; 60; 70) sont disposées de façon fixe et que l'activité de ces stations est exercée pensant les temps de pause des palettes (7; 7'), au cours de leur avance périodique.
EP87904041A 1987-06-23 1987-06-23 Procede et dispositif de fabrication de dalles de couverture de toits a bride transversale integralement faconnee Expired - Lifetime EP0320504B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87904041T ATE80829T1 (de) 1987-06-23 1987-06-23 Verfahren und vorrichtung zur herstellung von dacheindeckungsplatten mit angeformtem querflansch.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1987/000329 WO1988010185A1 (fr) 1987-06-23 1987-06-23 Procede et dispositif de fabrication de dalles de couverture de toits a bride transversale integralement façonnee

Publications (2)

Publication Number Publication Date
EP0320504A1 EP0320504A1 (fr) 1989-06-21
EP0320504B1 true EP0320504B1 (fr) 1992-09-23

Family

ID=8165193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87904041A Expired - Lifetime EP0320504B1 (fr) 1987-06-23 1987-06-23 Procede et dispositif de fabrication de dalles de couverture de toits a bride transversale integralement faconnee

Country Status (10)

Country Link
US (1) US5080840A (fr)
EP (1) EP0320504B1 (fr)
JP (1) JPH0641130B2 (fr)
AT (1) ATE80829T1 (fr)
AU (1) AU608760B2 (fr)
DE (2) DE3781896D1 (fr)
DK (1) DK166949B1 (fr)
ES (1) ES2009010A6 (fr)
NO (1) NO173595C (fr)
WO (1) WO1988010185A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277707B (en) * 1993-04-29 1996-07-03 Redland Technology Ltd Improvements in a roof tile making machine
CA2467250C (fr) * 2001-11-16 2006-10-24 Associated Property Investments Llc Installation destinee a la fabrication de pieces en beton arme
ES2189676B2 (es) * 2001-11-16 2004-09-16 Associated Property Investments L.L.C. Instalacion para fabricar piezas de hormigon armado.
WO2009109082A1 (fr) * 2008-03-05 2009-09-11 Monier Technical Centre Gmbh Appareil et procédé pour produire des dalles
US8167605B2 (en) * 2008-06-20 2012-05-01 Oria Collapsibles, Llc Production assembly and process for mass manufacture of a thermoplastic pallet incorporating a stiffened insert
US8522694B2 (en) 2008-06-20 2013-09-03 Oria Collapsibles, Llc Structural supporting pallet construction with improved perimeter impact absorbing capabilities
US8438981B2 (en) 2008-06-20 2013-05-14 Oria Collapsibles, Llc Pallet design with buoyant characteristics
US8701569B2 (en) 2008-06-20 2014-04-22 Oria Collapsibles, Llc Pallet design with structural reinforcement
CN103213187B (zh) * 2013-03-28 2015-05-27 南京环力重工机械有限公司 空心混凝土板连续挤出设备
CN103213188B (zh) * 2013-03-28 2015-04-08 南京环力重工机械有限公司 一种混凝土板连续挤出机

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DE228197C (fr) *
US430366A (en) * 1890-06-17 Roofing and sheathing tile
DE270524C (fr) *
US730131A (en) * 1903-02-09 1903-06-02 Klay Company Ab Tile.
US1792844A (en) * 1929-09-18 1931-02-17 Knecht Jakob Machine for making artificial building stone
GB666649A (en) * 1949-05-02 1952-02-13 Pegson Ltd Improvements in or relating to tile making machines
US2965949A (en) * 1957-10-07 1960-12-27 Gus W Lang Machines for forming and coating roofing tiles
DE1102029B (de) * 1959-04-30 1961-03-09 Ziegelwerke Emil Bott G M B H Verfahren und Vorrichtung zum Herstellen von Betondachsteinen
US3193903A (en) * 1962-05-11 1965-07-13 Nordon Inc Tile casting installation
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US3303245A (en) * 1963-09-09 1967-02-07 Terraz Epoxy Inc Process for production of tile products
AU425215B2 (en) * 1968-07-26 1972-06-16 BRAMALL INDUSTRIES PROPRIETARY LIMITED and MALCOLM JOHN AUSTRALIA PTY. LTD Tile and method of production
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Also Published As

Publication number Publication date
JPH0641130B2 (ja) 1994-06-01
NO890732D0 (no) 1989-02-21
DE3811914A1 (de) 1989-01-05
JPH02500262A (ja) 1990-02-01
NO890732L (no) 1989-04-14
US5080840A (en) 1992-01-14
ATE80829T1 (de) 1992-10-15
ES2009010A6 (es) 1989-08-16
NO173595B (no) 1993-09-27
DK78789D0 (da) 1989-02-21
DK78789A (da) 1989-04-04
DK166949B1 (da) 1993-08-09
AU7584087A (en) 1989-01-19
EP0320504A1 (fr) 1989-06-21
WO1988010185A1 (fr) 1988-12-29
DE3781896D1 (de) 1992-10-29
AU608760B2 (en) 1991-04-18
NO173595C (no) 1994-01-05

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