EP0154038B1 - Noyau de moulage avec éléments réglables - Google Patents

Noyau de moulage avec éléments réglables Download PDF

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Publication number
EP0154038B1
EP0154038B1 EP84116498A EP84116498A EP0154038B1 EP 0154038 B1 EP0154038 B1 EP 0154038B1 EP 84116498 A EP84116498 A EP 84116498A EP 84116498 A EP84116498 A EP 84116498A EP 0154038 B1 EP0154038 B1 EP 0154038B1
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EP
European Patent Office
Prior art keywords
core
core segment
moulding apparatus
wall section
moulding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84116498A
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German (de)
English (en)
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EP0154038A1 (fr
Inventor
Richard Kraiss
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.)
Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH
Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH
Original Assignee
Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH
Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH
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Priority claimed from DE3422981A external-priority patent/DE3422981C2/de
Application filed by Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH, Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH filed Critical Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH
Priority to AT84116498T priority Critical patent/ATE41346T1/de
Publication of EP0154038A1 publication Critical patent/EP0154038A1/fr
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Publication of EP0154038B1 publication Critical patent/EP0154038B1/fr
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    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • B28B21/566—Climbing elements

Definitions

  • the invention relates to a molding device for shaping with preferably several protruding elements, in particular climbing elements, such as crampons, stirrups, or the like, provided ßetonmaschine, z. B. manhole rings, manhole necks or the like., According to the preamble of claim 1.
  • a known molding device of this type (DE-PS 31 10 185) has proven itself very well. This applies in particular to the shaping device shown therein in FIG. 9 and described in the associated text, in which the core segment has a plurality of openings for introducing climbing elements from the outside, ie. H. from the mold space, furthermore has a receptacle and a clamping device assigned to each climbing element and a clamping drive common to all clamping devices.
  • the core segment designed in this way is for introducing the climbing elements z. B. already in the closed position, the risers being introduced from the outside of the mandrel through the openings in the associated receptacles and then held on the core segment by actuating the common tensioning drive and all tensioning devices.
  • the individual tensioning devices are lifted from the associated receptacle and the riser located therein by actuating the tensioning drive. Thereafter, the core segment is moved inward from the closed position, which completes the shaping contour of the mandrel, into the mandrel by horizontal movement by means of the drive device into a release position, as a result of which the climbing elements protruding into the interior of the mandrel are released and the concrete part is subsequently demolded by relative movement between the concrete part and the mandrel can be, without the concrete-climbing elements get stuck anywhere and are torn out.
  • climbing elements encompasses all possible forms and configurations of these, which have the function of kicks and an ascent from z.
  • the molds, the z. B. are suitable for the direct concreting of cranked down stirrups, different in construction 'than those for the direct concreting of other climbing elements, eg. B. normal crampons or heavier, larger safety crampons are determined.
  • the clamping devices assigned to each receptacle are located at a distance below the receptacle. The tensioning direction is from bottom to top, while the stirrup is released from top to bottom in order to overcome the downward bending of the stirrup.
  • the invention has for its object to provide a molding device of the type defined in the preamble of claim 1, which reduces the number of different mold cores and also mold core parts for the production of concrete parts with different types of protruding elements, in particular risers, while saving investment costs for differently designed mold cores .
  • the object is achieved in a molding device of the type defined in the preamble of claim 1 according to the invention in that the core segment together with the respective receptacles and associated clamping devices and clamping drive is detachably and interchangeably held on the remaining part of the mold core.
  • the exchange of the core segment alone is quick and easy to do. Another major advantage is that you can quickly and easily remove a core segment used for maintenance and cleaning work and then also quickly and easily carry out work in places that otherwise could hardly be reached or only with great difficulty and under forced work . At the same time, it is advantageous that the interior of the mandrel is cleared upwards by removing the core segment. You can also clean, repair or maintain the mold core quickly and easily, even without having to do this from below and with great effort and possibly in difficult positions.
  • Claims 8 and 9 contain further advantageous embodiments.
  • the strips on the wall section reinforce and stiffen the entire core segment. This and the pressing of the core segment in the closed position ensures that there is a rigid connection between the core segment used on the one hand and the remaining part of the mold core on the other hand during the shaping process by shaking, which ensures good transmission of the vibrations from the mold core to the core segment as well . It is thus achieved that the core segment is pressed together with the remaining part of the mandrel to form an internally fixed vibrating unit.
  • the strips with contact and sealing surface on the edge side of the wall section of the core segment ensure a good seal from bottom to top, so that concrete, in particular cement milk, cannot pass from the mold space through gaps into the interior of the mold core.
  • the recess in the lid in this direction which is necessary for the horizontal movement of the core segment between the release position and the closed position, is not only deep enough in this direction but also sufficiently wide that the core segment can be exchanged without problems upwards or from above can be introduced.
  • the cover part on the wall section of the core segment is larger than this Dimension recess on the cover side and lie flat on the edge of the rest of the cover.
  • each pivot lever with an articulated, length-adjustable push rod forms a type of toggle lever.
  • the length of the push rod can be changed by means of an adjusting spindle with left and right-hand threads.
  • the contact pressure of the core segment on the core wall can be set very precisely.
  • the toggle lever system has the advantage that vibrations are well transmitted to the core segment and, above all, the core segment is prevented from being pushed back under the effect of the concrete pressure in that the toggle arrangement absorbs this pressure. The drive device is therefore relieved of these forces.
  • the length of the push rod can be adjusted so that the pivot lever with the push rod is in its dead center position when the core segment is pressed against the core wall of the mold core in the shaping position and is to be held in this way.
  • the measures in claim 17 achieve parallel guidance of the core segment via the toggle lever arrangement.
  • the features in claim 21 ensure that when the core segment is moved into the release position or into the closed position, a parallel displacement of the core segment is guaranteed even without a special parallel guide for the core segment.
  • the flow of the pressurized working medium is divided into two equal flows, which are then fed to the two working cylinders, whereby both are separated balanced and move in parallel.
  • the working medium can also be supplied under pressure to a flow divider for the opposite drive movement and only then from this to the working cylinders via individual lines and equally large partial flows.
  • the features in claim 22 ensure that, during the shaping process, the pressure of the concrete acting on the wall section of the core segment from the molding space is not the core segment from the closed position. pushes out towards the release position.
  • actuating element carrying the associated guide element is guided separately in the direction or approximately parallel to the translation direction, independently of the assigned translation drive.
  • these separate guides and actuating elements require additional parts that are subject to wear in the long run and also require maintenance.
  • the cross section of the piston rod can also be dimensioned so that it has the required bending stiffness.
  • the pressure of the working cylinder can also be selected accordingly.
  • An embodiment results from claim 25, in which the cylinder housing is fastened to the remaining part of the mandrel and the piston rod of the working cylinder is moved with a guide member fixed thereon.
  • the piston is located on the middle of the piston rod.
  • a further advantageous embodiment contains claim 29. This leads to a further stiffening of the core segment, in particular of the wall section. Even if a parallel guidance of the core segment with respect to the mandrel is not possible, such a parallel guidance is nevertheless z. B. by the features of claim 21, d. H. guaranteed by at least one current divider in the supply line of the two working cylinders.
  • the embodiment according to claim 30 is also advantageous. This provides mechanical horizontal guidance on the mandrel for the operation of the core segment used and its movement between the release position and the closed position. To replace the core segment, the lid part must be detached from the wall section and moved in the direction of the release position to the extent that the core segment can be removed.
  • the features in claim 31 substantially stabilize the mandrel, especially the rest of the core wall, which is thereby additionally stiffened against automatic opening or compression.
  • FIG. 1-5 schematically shows a mold core 15 'of a molding device which is part of a machine, not shown.
  • the shaping device is used for shaping concrete parts, in particular manhole rings, manhole necks, well rings, transition rings or the like. Details of such a shaping device are described in particular in DE-PS 31 10 185, to which express reference is made to avoid unnecessary repetition. The same applies to the mode of operation and the process flow in the shaping.
  • the mold core 15 is designed such that, during the shaping of the concrete part, a plurality of protruding elements of any type, in the present example crampons, can preferably be concreted into it from the inside at the same time.
  • the term "crampon” used here encompasses all possible forms and configurations of such elements that function as kicks. and allow access to a shaft composed of such shaft rings.
  • the term crampons covers the normal crampons usually called so and also heavier and larger safety crampons, e.g. B. each made of cast iron, as well as the climbing elements conventionally referred to as stirrups. In this respect too, reference is made to DE-PS 31 10 185. Crampons of the type mentioned are not shown in FIGS. 1-5.
  • the mandrel 15 is approximately hat-shaped. It is hollow and interchangeably fastened on a central vibrator 14.
  • the central vibrator 14 sits on a base plate 16.
  • the mold core 15 contains a z. B. welded plate 17 with which it is placed on the central vibrator 14 and attached.
  • the plate 17 is, for. B. approximately three-quarter circle.
  • the mandrel 15 is here, for. B. round - in another, not shown Embodiment instead, however, out of round, z. B. oval, quadrangular or the like.
  • the mandrel 15 has a circular lid 18 and a cylindrical, down to the base plate 16 leading core wall 19.
  • the molding device also includes an outer mold shell, not shown, and z. B. a lower sleeve and an upper sleeve. These elements can be found in the prior art.
  • the mandrel 15 has an installation device, with the help of which at least one crampon, preferably at the same time several crampons, for example, during the shaping process. B. four crampons can be concreted from the inside into the concrete part to be formed.
  • the installation device has a core segment 30, which is formed here from a cover section 31 and a wall section 32 of the mold core 15.
  • the lid section 31 is somewhat larger than a lid-side recess 29 which, in the state according to FIG. 2, is overlapped in a sealing manner by the lid section 31 on the three sides forming approximately a U.
  • the remaining part of the cover 18 containing the recess 29 is fastened to the core wall 19, in particular welded to it or instead integrally therewith, whereby this remaining part of the mold core 15 solidifies and is stiffened against deformation in the area of the cover 18, in particular the core wall 19 .
  • the wall section 32 of the core segment 30 has the shape of a section of the cylinder wall.
  • the cylindrical core wall 19 is provided with a cutout 34 which is shaped in the same way and which in the side view according to FIG. 1 is substantially U-shaped and extends from top to bottom.
  • a side view or section (FIG. 2), there is approximately an angular shape for the core segment 30.
  • the core segment 30 forms an independent element with respect to the remaining part of the mold core 15, together with the cover section 31, which in the first exemplary embodiment according to FIGS. 1-5 is fastened, in particular welded, to the upper end of the wall section 32.
  • the core segment 30 can be moved with respect to the mold core 15 out of its shaping contour (FIGS.
  • the mounting device has each element to be concreted, e.g. B. crampons, a receptacle 45-48, which is provided on the wall section 32 and in detail has a suitable contact surface with centering in the region of an opening 41-44, the positionally correct reception of one there from the outside through the opening 41-44 to be introduced, to be concreted in element, in particular crampon, before the shaping process.
  • a receptacle 45-48 which is provided on the wall section 32 and in detail has a suitable contact surface with centering in the region of an opening 41-44, the positionally correct reception of one there from the outside through the opening 41-44 to be introduced, to be concreted in element, in particular crampon, before the shaping process.
  • the mounting device also has a tensioning device 88-91 for each opening 41-44 and receptacle 45-48, all of which are connected via round guide rods 92 to form a unit which can be moved vertically up and down.
  • the round guide rods 92 can be moved vertically up and down in split plain bearings 93.
  • All tensioning devices 88-91 have in common a single tensioning drive 94 in the form of a hydraulic or pneumatic working cylinder, which engages on the one hand on the round guide rods 92 and on the other hand on a holder of the core segment 30, that is to say how the tensioning devices 88-91 are also part of the core segment 30.
  • a drive device 35 is provided for the horizontal translation movement of the core segment 30 in the direction of the arrow 33 and back, which here has two individual translation drives in the form of hydraulic or pneumatic working cylinders 36, 37. Both extend essentially parallel to each other in the direction of arrow 33. They lie on the same diametrical plane intersecting the central axis 13 and here approximately at the middle of the height of the wall section 32, so that the translational actuating movement into the release position and into the closed position has at least essentially no moments can act on the core segment 30.
  • the core segment 30 required for this purpose in the adapted training quickly and then if other elements, for. B. differently shaped crampons or the like.
  • the same way are to be introduced directly during the shaping process, to be removed and exchanged for another core segment adapted to them.
  • the core segment 30 can be detachably connected to the drive device 35 in the form of the two translation drives 36, 37, so that the core segment 30 can be automatically coupled to it when it is introduced and can be automatically decoupled from it when it is removed.
  • the translation drives 36, 37 are, for. B. held with its housing at the same time as an additional stiffening of the core wall 19 Biech.
  • the piston rod of each translation drive 36, 37 engages an actuating element 38 or 39, which is guided back and forth in a translatory manner on a guide parallel to the translation direction according to arrow 33 and is actuated by means of the translation drive 36 or 37.
  • the leadership has z. B. a guide rod 20 or 21, which passes through the actuator 38 or 39 directly or a guide bushing inserted therein.
  • Fig. 5 is indicated by dashed lines that two guide rods can be arranged one below the other for each translation drive 36, 37 to avoid possible tilting moments.
  • the core segment 30 can be inserted from above into the remaining part of the mold core 15 in the direction at least substantially parallel to the central axis 13 of the mold core 15 and can be pulled out of it in opposite directions.
  • the wall section 32 of the core segment 30 can be automatically coupled to the actuating elements 38, 39 and the translation drives 36 and 37 actuated thereby, with the production of a form-fitting connection which, when the translation drives 36, 37 are actuated in the direction of the arrow 33 and in opposite directions, transmits forces allows on the wall portion 32.
  • the wall section 32, on the one hand, and the remaining part of the mandrel 15, on the other hand, have guide members 51, 52 and guides 53 and 54 which cooperate with them in the region of the side edges which are adjacent to one another and approximately parallel to the central axis 13 of the mandrel 15, on both sides of the cutout 34 that automatically come into guide engagement with each other when the core segment 30 is inserted.
  • the guide members 51, 52 each consist of strips 55, 56 aligned approximately parallel to the central axis 13, which are fixedly connected to the actuating element 38, 39.
  • the guide members 51, 52 designed in this way are arranged on the remaining part of the mold core 15 via the actuating elements 38, 39 and the translation drives 36, 37 actuating the latter.
  • the guides 53, 54 are part of the wall section 32 of the core segment 30. It goes without saying, however, that the conditions can also be reversed kinematically.
  • the guides 53, 54 are formed as follows on the two side edges of the wall section 32.
  • the wall section 32 carries a strip 57, 58 attached to it on each side edge.
  • Each strip 57, 58 projects at least partially laterally beyond the edge of the wall section 32 in the direction of the adjacent edge of the cutout 34 and carries practically as a continuation in this projection area of the inner surface course of the wall section 32 running contact and sealing surface 59, 60.
  • a surface 61 or 62 extends at right angles to it.
  • the contact and sealing surfaces 59, 60 lie against the edge under a gap seal the adjacent side edge of the remaining part of the mandrel 15, namely on the core wall 19 on both sides of the cutout 34, the wall section 32 is still firmly and permanently pressed against the arrow 33 via the translation drives 36, 37 in the opposite direction, so that the contact and Sealing surfaces 59, 60 despite the slight gap in the edge area between the wall cut 32 and the cutout 34 to prevent the penetration of concrete, especially cement milk.
  • this ensures a rigid connection between the core segment 30 on the one hand and the remaining part of the mandrel 15 on the other hand, thereby ensuring a good transmission of the vibrations generated by the central vibrator 14 for vibrating the concrete.
  • each strip 57, 58 running on both edges of the wall section 32 are at the same time designed as reinforcing strips which additionally stiffen the wall section 32.
  • each strip 57, 58 forms part of the guide provided for each side edge of the wall section 32.
  • An angle element 63 or 64 is fastened to each bar 57, 58 with an angle leg, which in the exemplary embodiment shown is dimensioned as long as the bars 57, 58, and thus exactly as long as the wall section 32.
  • each angle element 63 or 64 runs at a distance from the surface 61 or 62 of the strip 57 or 58, whereby a guide groove 67 or 68 is formed therebetween.
  • the width of the guide groove 67, 68 is somewhat larger than the cross-sectional thickness of the strip 55 or 56, so that a trouble-free insertion of the core segment 30 from above and pulling out in opposite directions is possible ncn is.
  • the guide members 51, 52 are formed from rods, rods or similar linear parts, which are provided on each side edge of the wall section 32 on the remaining part of the mold core 15.
  • the guides 53, 54 are then designed as elements containing bushes, eyes or the same closed guide openings, or also as strips, rails or as other elements containing grooves, which are fastened to each side edge of the wall section 32.
  • a particularly simple design is achieved by the combination of actuating element 38, 39 with guide element 51, 52.
  • each strip 55, 56 moves from above into the edge-side guide groove 67 or 68 on the wall section 32, which is open at least at the lower end.
  • the core segment 30 is by means of the two translation drives 36, 37 from the position in which the insertion takes place, for. B. from the release position, into the closed position by actuation in the opposite direction to the arrow 33, as well as back into the release position in the direction of the arrow 33.
  • the closed position is reached when the contact and sealing surfaces 59, 60 of the strips 57 and 58 to the side of the recess 34 of come to the inside at the edge of the remaining part of the core wall 19.
  • the core segment 30 is then pressed firmly and sealingly in the manner described.
  • a wall section 32 of the core segment 30, which locks it mechanically in the pressed closed position and which, when the closed position and the described pressing position are reached, for. B. occurs automatically or by actuating a special own drive in the locking position.
  • This locking device has z. B. per side edge of the wall part 32, a locking member, the z. B. may consist of a toggle or other elements known per se.
  • Both working cylinders 36, 37 are designed as double-acting working cylinders, to which the working fluid is fed under pressure via line 69 for the actuating movement in the closing direction, in the opposite direction to arrow 33, while the working fluid under pressure via the line for the opposite steep movement in arrow direction 33 72 is supplied.
  • the Z. B. working medium conducted in line 69 does not reach the working cylinders 36, 37.
  • the working medium flow is first divided by means of a flow divider 69a into two equal individual flows, which then lead via assigned lines 70, 71 to the individual working cylinders 36, 37.
  • the working fluid is supplied via line 72 and distributed to lines 73, 74.
  • the flow divider 69a ensures that the two return flows of the working cylinders 36, 37 in the lines 70, 71 are of the same size and are combined in the line 69.
  • the contact pressure generated by the two working cylinders 36, 37 in the direction opposite to the arrow 33 is greater than the pressure of the concrete in the molding space acting on the wall section 32 of the core segment 30 during the molding process. so that the wall section 32 is thus a solid part of the entire mold core 15 which is rigidly connected to the remaining part of the mold core 15.
  • the parts which correspond to the first exemplary embodiment are used by 100 larger reference numerals, so that reference is made to the first exemplary embodiment in order to avoid repetitions.
  • the cover section 131 is not a part that moves with the core segment 130. Rather, the cover portion 131 is on the underside with a guide member z. B. firmly connected in the form of a guide rod 180 which is substantially perpendicular to the central axis 113 and is oriented essentially horizontally and is guided in a guide bushing 181 in the horizontal direction according to arrow 182 to and fro.
  • the guide bushing 181 is fastened to the remaining part of the cover 118, which is firmly connected to the remaining part of the core wall 119.
  • the cover section 131 is detachably connected to the core segment 130 in the region of the upper end of the wall section 132 via countersunk screws 183, which are screwed into a retaining ring 184 on the inside of the wall section 132.
  • the reverse procedure is used when inserting a new core segment 130.
  • the cover section 131 remains firmly connected to the wall section 132, in particular when it comes to the demolding process in which the core segment 130 is moved in the horizontal direction in FIG. 6 to the left into the release position and then back into the closed position . It is advantageous here that the guide rod 180 and guide bushing 181 there is an additional parallel guidance during this movement of the core segment 130 from the release position into the closed position and back.
  • the parts corresponding to the first exemplary embodiment have reference numerals 200 and 300 larger, respectively, so that reference is made to the description of the first exemplary embodiment.
  • the guide member 251 is arranged fixedly on the moving part, namely the cylinder housing 275, of the translation drive 236.
  • the element supporting the strip 255 e.g. B. a U-profile, is screwed to a holding member 276 which is welded to the cylinder housing 275.
  • the translation drive 236 is double-acting. His piston rod 277 is continuous and is attached at both ends to angles 278, which on the core wall 219 z. B. are welded. In this way, the core segment 230 is thus fastened to the cylinder housing 275 and guided back and forth on the piston rod 277.
  • the guidance is very precise since the cylinder housing 275 has guides on both end regions with a relatively large guide section.
  • the bending load on the piston rod 277 is also very well absorbed by its mounting at both ends.
  • the piston located on the center of the piston rod 277 has piston areas of equal size on the left and right, so that the same forces and speeds result for the movements in both directions at the same pressure. This direct guidance leads to complete freedom from maintenance. Wear is also very low because the piston rod 277 is hard chrome-plated.
  • the translation drive 337 here consists of a double-acting working cylinder, too, but in a foot design and with a piston rod 377 projecting on one side.
  • the translation drive 337 is screwed to a mounting plate 396 with the foot parts 395.
  • the cylinder housing 375 is a fixed part of the mandrel, while the piston rod 377 is displaced relative to it.
  • the guide member 352 is directly attached, so here the bar 356 as part of z. B. a U-profile.
  • the piston rod 377 has a larger cross-section in order to achieve high bending stiffness.
  • the drive device 435 has at least one pivot lever 485 for each of the two guide members 451, which is pivotally connected at its right end to a push rod 486, which in turn is articulated with the actuating element 438 carrying the strips 455 is connected to its translation movement.
  • the push rod 486 is adjustable in length via an adjusting spindle with left-hand and right-hand threads. It works on the respective guide member 451.
  • the left end of the pivot lever 485 in FIGS. 9 and 10 is connected in a rotationally fixed manner to a shaft 487 which is pivotably mounted on the core wall 419.
  • the pivot lever 485 forms together with the push rod 486 a kind of toggle lever, the functional length of these two parts in the region of the push rod 486 being set such that in the shaping position of the core segment 430 the pivot lever 485 with the push rod 486 assumes a dead center position in which over both Elements of the required contact pressure of the core segment 430 to the core wall 419 is given.
  • This has the advantage that the vibrations are well transmitted to the core segment 430 when shaking in, and the core segment 430 cannot be pushed back under the concrete pressure, and the drive device 435 also does not have to apply any correspondingly large counterforces.
  • a parallel guidance of the core segment 430 is then possible via this arrangement, even if the same arrangement is selected for the other guide element (not shown) and the pivoting lever of which is also connected in a rotationally fixed manner to the shaft 487.
  • the drive device 435 for each of the two swiveling levers 485 can have its own, directly engaging translational drive, which is indicated schematically in FIG. B. hinged about the middle of the pivot lever 485 to pivot it.
  • the drive device 435 can also have a translation drive in the form of a working cylinder 498 (FIG. 10) common to both swivel levers 485, which operates on a drive lever 499 which is connected in a rotationally fixed manner to the shaft 487 and on which the working cylinder 498 is spaced from the Shaft 487 acts on the pivot actuation of the shaft and thus the two pivot levers 485.
  • the drive lever 499 expediently sits approximately centrally on the shaft 487, so that no unequal forces act on the two pivot levers 485 due to a possible torsion of the shaft 487.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Claims (31)

1. Dispositif de moulage pour la mise en forme de pièces en béton, par exemple anneaux de puits, cols de puits ou analogues, munis de préférence de plusieurs éléments saillants, en particulier des éléments de montée tels qu'échelons, étriers ou analogues, comprenant un noyau de moulage (15 ; 115) à peu près en forme de chapeau ayant une paroi de noyau par exemple cylindrique (19 ; 119) et un couvercle supérieur (18 ; 118), le noyau (15 ; 115) comprenant des moyens d'encastrement pour encastrer dans le béton les éléments saillants, en particulier les éléments de montée, de l'intérieur dans la pièce en béton à mouler au cours du processus de mise en forme, lesquels moyens d'encastrement comprennent au moins un segment de moule (30 ; 130), formant au moins une portion de paroi (32; 132) de la paroi de noyau (19 ; 119), qui peut être déplacé au moyen d'un dispositif d'entraînement (35), par rapport à la partie restante du noyau de moule (15; 115), à l'extérieur du contour de mise en forme de celui-ci dans une position de dégagement permettant au moins le démoulage de la pièce en béton avec ses éléments encastrés, en particulier les éléments de montée, et en retour dans une position de fermeture dans laquelle le segment de noyau (30 ; 130) s'insère dans la partie restante du noyau de moule (15 ; 115) en complétant son contour de mise en forme, ainsi que, pour chaque élément, en particulier élément de montée à enrober dans le béton, un évidement (45-48) et de moyens de serrage (88-91) associés à celui-ci et muni d'une commande de serrage (94), caractérisé en ce que le segment de noyau (30 ; 130 ; 230 ; 330 ; 430) avec les évidements individuels (45-48) et les moyens de serrage (88-91) et les commandes de serrage (94) associés, sont montés de façon amovible et interchangeable sur la partie restante du noyau de moule (15 ; 115).
2. Dispositif de moulage selon la revendication 1, caractérisé en ce que le segment de noyau (30 ; 130 ; 230 ; 330 ; 430) peut être accouplé de façon amovible au dispositif d'entraînement (35 ; 235 ; 335 ; 435) et en être découplé.
3. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que le segment de noyau (30 ; 130 ; 230 ; 330 ; 430) est disposé de façon à s'emboîter de haut en bas dans la partie restante du noyau de moule (15 ; 115) et à en être extrait en sens inverse dans une direction sensiblement parallèle à l'axe médian (13 ; 113) du noyau de moule (15 ; 115).
4. Dispositif de moulage selon l'une des revendications 1 à 3, caractérisé en ce que la portion de paroi (32 ; 132) du segment de noyau (30 ; 130 ; 230 ; 330 ; 430) d'une part et la partie restante du noyau de moule (15 ; 115) d'autre part présentent dans la région de leurs bords latéraux mutuellement voisins à peu près parallèles à l'axe médian (13 ; 113) du noyau de moule (15; 115), des organes de guidage allongés (51, 52 ; 251 ; 352 ; 451) et des guides (53, 54) coopérant avec ceux- ci, qui viennent automatiquement en engagement mutuel de guidage lors de l'emboîtement du segment de noyau (30 ; 130 ; 230 ; 330 ; 430).
5. Dispositif de moulage selon la revendication 4, caractérisé en ce que les organes de guidage (51, 52 ; 251 ; 352 ; 451) sont formés de barres, de tiges, de barrettes (55, 56 ; 255 ; 356) ou d'éléments linéaires analogues qui sont prévus à chaque bord latéral de la portion de paroi (32 ; 132) du segment de noyau (30 ; 130 ; 230 ; 330 ; 430).
6. Dispositif de moulage selon l'une des revendications 4 et 5, caractérisé en ce que les guides (53, 54) sont constitués par des douilles, des oeillets ou des éléments fermés analogues comportant des ouvertures de guidage ou par des barrettes (57-68), des barres ou des éléments comportant des rainures (67,68), qui sont prévues sur chaque bord latéral de la portion de paroi (32 ; 132) du segment de noyau (30 ; 130).
7. Dispositif de moulage selon l'une des revendications 4 à 6, caractérisé en ce que les organes de guidage (51, 52 ; 251 ; 352 ; 451 ; 55, 56 ; 255 ; 356) sont disposés sur la partie restante du noyau de moule (15 ; 115) et les guides (53, 54, 55-68) sur la portion de paroi (32 ; 132) du segment de noyau (30 ; 130 ; 230 ; 330 ; 430).
8. Dispositif de moulage selon l'une des revendications 1 à 7, caractérisé en ce que la portion de paroi (32 ; 132) du segment de noyau (30 ; 130 ; 230 ; 330 ; 430) porte sur chaque bord latéral des barrettes fixes (57, 58) qui portent chacune une surface d'appui et d'étanchéité (59, 60) faisant saillie latéralement et s'étendant en continuation du tracé de la surface interne de la portion de paroi (32 ; 132), par laquelle, lorsque le segment. de noyau (30 ; 130) est rentré, la portion de paroi (32 132) est en contact et, de préférence, pressée du côté du bord au bord latéral voisin de la partie restante du noyau de moule (15 ; 115) en obturant l'intervalle de façon étanche.
9. Dispositif de moulage selon la revendication 8, caractérisé en ce que la barrette (57, 58) est réalisée en même temps en tant que barrette de renforcement de la portion de paroi (32 ; 132).
10. Dispositif de moulage selon l'une des revendications 6 à 9, caractérisé en ce que chaque barrette (57, 58) forme en même temps une partie (61, 62) du guide (53, 54) prévu à chaque bord latéral de la portion de paroi (32 ; 132).
11. Dispositif de moulage selon l'une des revendications 6 à 10, caractérisé en ce qu'à chaque barrette (57, 58) est fixé un élément en cornière (63, 64) continu sur la longueur de la barrette ou divisé en plusieurs pièces se suivant distance, dont une aile (65, 66) s'étend à distance d'une face (61, 62) de la barrette en formant une rainure de guidage (67, 68).
12. Dispositif de moulage selon l'une des reven: dications 1 à 11, caractérisé en ce que le dispositif d'entraînement (35 ; 235 ; 335) du segment de noyau (30 ; 130 ; 230 ; 330) comporte et actionne en même temps au moins un organe de guidage (51, 52 ; 251 ; 352 ; 55, 56 ; 255 ; 356) associé au bord latéral de la portion de paroi (32 ; 132).
13. Dispositif de moulage selon l'une des revendications 1 à 12, caractérisé en ce que le dispositif d'entraînement (35 ; 235 ; 335 ; 435) actionne, de façon alternative dans la direction de translation (flèche 33) ou parallèlement à celle-ci, deux organes de guidage (51, 52 ; 251 ; 352 ; 451) disposés à distance l'un de l'autre, avec lesquels la portion de paroi (32 ; 132 ; 232 ; 332) du segment de noyau (30 ; 130 ; 230 ; 330 ; 430) peut être couplée positivement, de façon automatique et dans la direction de translation, lors de l'emboîtage.
14. Dispositif de moulage selon la revendication 13, caractérisé en ce que chaque organe de guidage (51, 52 ; 251 ; 352 ; 451) porte une barrette (55, 56 ; 255 ; 356 ; 455) s'étendant à peu près parallèlement à l'axe médian (13 ; 113) ou des sections de barrettes qui, lors de l'emboîtage du segment de noyau (30 ; 130 ; 230 ; 330 ; 430), s'introduisent à partir du bas dans une rainure de guidage (67, 68) de la portion de paroi (32 ; 132) située du côté du bord et ouverte au moins vers le bas.
15. Dispositif de moulage selon l'une des revendications 8 à 14, caractérisé en ce que le segment de noyau (30 ; 130 ; 230 ; 330 ; 430) peut, au moyen du dispositif d'entraînement (35 ; 235 ; 335 ; 435), être déplacé de la position de fermeture dans la position de dégagement (flèche 33) et inversement, et en outre, en position de fermeture, pressé de façon ferme et étanche par la surface d'appui et d'étanchéité (59, 60) des barrettes (57, 58) situées des deux côtés contre la région de paroi voisine de la partie restante (19 ; 119) de la paroi du noyau.
16. Dispositif de moulage selon l'une des revendications 13 à 15, caractérisé en ce que le dispositif d'entraînement (435) comporte pour chaque organe de guidage (451) au moins un levier pivotant (485) qui agit sur l'organe de guidage correspondant (451) par l'intermédiaire d'une bielle (486) de longueur variable qui lui est articulée.
17. Dispositif de moulage selon la revendication 16, caractérisé en ce que les deux leviers pivotants (485) associés respectivement aux organes de guidage (451) sont liés de façon fixe en rotation à un arbre (487) monté sur la paroi de noyau (419).
18. Dispositif de moulage selon l'une des revendications 16 et 17, caractérisé en ce que le dispositif d'entraînement (435) comporte pour chaque levier pivotant (485) une commande de translation, par exemple un vérin hydraulique ou pneumatique (497), attaquant directement celui-ci et le faisant pivoter avec l'arbre (487).
19. Dispositif de moulage selon l'une des revendications 16 et 17, caractérisé en ce que le dispositif d'entraînement (435) comporte une commande de translation, par exemple un vérin hydraulique ou pneumatique (497), commun aux deux leviers pivotants (485), qui agit mur un levier d'entraînement lié à l'arbre (485) de façon fixe en rotation, auquel il est articulé à distance de l'arbre (487).
20. Dispositif de moulage selon l'une des revendications 1 à 15, caractérisé par deux commandes de translation (36, 37 ; 236 ;337), par exemple vérins hydrauliques ou pneumatiques, disposés à distance l'un à côté de l'autre et fixés sur la partie restante du noyau de moule (15 ; 115).
21. Dispositif de moulage selon la revendication 20, caractérisé en ce que le fluide de travail peut être amené sous pression aux deux vérins (36, 37). pour l'actionnement au moins dans un sens de translation, au moyen d'un diviseur de courant (69a) qui partage le courant de fluide de travail (69, 72) en deux courants égaux (70, 71 et/ou 73, 74).
22. Dispositif de moulage selon l'une des revendications 20 et 21, caractérisé en ce que la force de pressage produite par les deux vérins (36, 37 ; 236 ; 337) est choisie plus élevée que la pression du béton s'exerçant lors du processus de mise en forme sur la section de paroi (32 ; 132) du segment de noyau (30 ; 130 ; 230 ; 330).
23. Dispositif de moulage selon l'une des revendications 20 à 22, caractérisé en ce que chaque organe de guidage (51, 52) fixé sur la partie restante du noyau de moule (15 ; 115) forme une partie (55, 56) d'un élément de réglage (38, 39) respectif guidé en translation sur un guide (20, 21) du noyau de moule (15 ; 115).
24. Dispositif de moulage selon l'une des revendications 20 à 22, caractérisé en ce que chaque organe de guidage (251 ; 352) est disposé de façon fixe sur la partie en mouvement (275 ; 377) de la commande de translation respective (236 ; 337) et est guidé conjointement à cette partie en mouvement (275 ; 377) sur l'autre partie (277 ; 375) de la commande de translation (236 ; 337) immobilisée sur le noyau de moule (230 ; 330).
25. Dispositif de moulage selon la revendication 24, caractérisé en ce que chaque commande de translation (337), en particulier vérin, est fixée au noyau de moule (319) par son cylindre (375) et porte sur sa tige de piston en mouvement (377) l'organe de guidage (352, 3.56) associé qui y est immobilisé.
26. Dispositif de moulage selon la revendication 24, caractérisé en ce que chaque commande de translation (236), en particulier vérin, est fixée au noyau de moule (219) par sa tige de piston traversante (277) et porte sur son cylindre en mouvement (275) l'organe de guidage correspondant (251, 255) qui y est fixé.
27. Dispositif de moulage selon l'une des revendications 1 à 26, caractérisé par un dispositif de verrouillage verrouillant mécaniquement la portion de paroi (32 ; 132 ; 232 ; 332; 432) du segment de noyau (30 ; 130 ; 230 ; 330 ; 430) dans la position de fermeture pressée.
28. Dispositif de moulage selon l'une des revendications 1 à 27, caractérisé en ce que le segment de noyau (30 ; 130 ; 230 ; 330 ; 430) comporte, en plus de la portion de paroi (32 ; 132), de préférence partiellement cylindrique, à l'extrémité supérieure de la portion de paroi (32 ; 132), une portion de couvercle (31 ; 131) qui recouvre de façon étanche un évidement (29) du couvercle (18 ; 118) du noyau de moule (15 ; 115).
29. Dispositif de moulage selon la revendication 28, caractérisé en ce que la portion de couvercle (31) du segment de moule (30) est fixée, en particulier soudée, à sa portion de paroi (32) ou fait partie intégrante de cette partie entraînée du segment de noyau (30).
30. Dispositif de moulage selon la revendication 28, caractérisé en ce que la portion de couvercle (131) est guidée pour un mouvement de va-et-vient (flèche 182, figure 6) et est maintenue le long d'un guide (180, 181) s'étendant au moins essentiellement perpendiculairement à l'axe médian (113) du noyau de moule (115) et que la portion de couvercle (131) peut être assemblée de façon amovible à la portion de paroi (132) sur le bord du segment de noyau (130) voisin de la portion de paroi (132).
31. Dispositif de moulage selon l'une des revendications 1 à 30, caractérisé en ce que la partie restante (18 ; 118) du couvercle est fixée, en particulier soudée, à la partie restante (19 ; 119) de la paroi du noyau de moule (15 ; 115), ou fait partie intégrante de celle-ci.
EP84116498A 1984-02-08 1984-12-29 Noyau de moulage avec éléments réglables Expired EP0154038B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84116498T ATE41346T1 (de) 1984-02-08 1984-12-29 Formkern mit verstellbaren teilen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3404287 1984-02-08
DE3404287 1984-02-08
DE3422981 1984-06-22
DE3422981A DE3422981C2 (de) 1984-02-08 1984-06-22 Formeinrichtung zur Formgebung von mit vorzugsweise mehreren abstehenden Elementen, insbesondere Steigelementen, wie Steigeisen, Steigbügeln o.dgl., versehenen Betonteilen, z.B. Schachtringen, Schachthälsen, o.dgl.

Publications (2)

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EP0154038A1 EP0154038A1 (fr) 1985-09-11
EP0154038B1 true EP0154038B1 (fr) 1989-03-15

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EP (1) EP0154038B1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650150A (en) * 1985-04-19 1987-03-17 Opako, S.A. Mold apparatus for vertical elements of concrete
AT398931B (de) * 1988-12-01 1995-02-27 Johann Schluesselbauer Formkern für eine formvorrichtung zum herstellen von rohrförmigen werkstücken aus beton, insbesondere schachtringen
US5236322A (en) * 1991-08-23 1993-08-17 International Pipe Machinery Corporation Cage positioner
US6068306A (en) * 1998-11-02 2000-05-30 Brautigam; Richard H. Window locking arrangement
FR2841494B1 (fr) * 2002-06-27 2005-11-25 Airbus France Outillage de moulage a clef notamment pour la realisation d'entree d'air sans eclisse
US7707708B2 (en) * 2005-09-21 2010-05-04 Rohr, Inc. Apparatus for making a tubular composite structure
US7640961B2 (en) * 2008-03-21 2010-01-05 Rohr, Inc. Apparatus and method for making a tubular composite barrel
US8025499B2 (en) 2008-11-03 2011-09-27 Rohr, Inc. Multi-segment tool and method for composite formation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA712969A (en) * 1965-07-06 J. Lovers Guy Mold for concrete structures
US645254A (en) * 1899-07-07 1900-03-13 D Edmund Forker Mold for water-tanks.
US1112034A (en) * 1912-09-11 1914-09-29 Walter D Ross Core-bar.
US2683298A (en) * 1949-03-23 1954-07-13 Howard O Fadden Core for forming concrete articles
US3762678A (en) * 1970-03-06 1973-10-02 J Thornton Reusable forms for casting walls
DE3110185C2 (de) * 1981-03-17 1988-09-08 Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren Formeinrichtung zur Formgebung von mit mindestens einem Steigeisen versehenen Betonteilen wie Schachtringen, Schachthälsen od.dgl.

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EP0154038A1 (fr) 1985-09-11
US4610422A (en) 1986-09-09

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