EP0154038A1 - Noyau de moulage avec éléments réglables - Google Patents

Noyau de moulage avec éléments réglables Download PDF

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Publication number
EP0154038A1
EP0154038A1 EP84116498A EP84116498A EP0154038A1 EP 0154038 A1 EP0154038 A1 EP 0154038A1 EP 84116498 A EP84116498 A EP 84116498A EP 84116498 A EP84116498 A EP 84116498A EP 0154038 A1 EP0154038 A1 EP 0154038A1
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EP
European Patent Office
Prior art keywords
core segment
molding device
core
wall section
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84116498A
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German (de)
English (en)
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EP0154038B1 (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
Prinzing Georg Co KG GmbH
Original Assignee
Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH
Georg Prinzing & Co KG Betonformen- und Maschinenfabrik GmbH
Prinzing Georg Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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, Prinzing Georg Co KG 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
Application granted granted Critical
Publication of EP0154038B1 publication Critical patent/EP0154038B1/fr
Expired legal-status Critical Current

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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 shaping device for shaping concrete parts provided with preferably a plurality of protruding elements, in particular climbing elements such as crampons, stirrups or the like.
  • climbing elements such as crampons, stirrups or the like.
  • 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 from the molding space, and also a receptacle and a tensioning device associated therewith as well as one of all tensioning devices has common tension drive.
  • the core segment designed in this way is already in the closed position for introducing the risers, for example, 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.
  • Climbing elements are concreted in, the individual clamping devices are lifted from the respectively assigned receptacle and the climbing element 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.
  • the term climbing elements encompasses all possible forms and configurations of these, which have the function of kicks and an ascent of e.g.
  • climbing elements e.g. Crampons or stirrups with an angled downward section should be taken into consideration, which at the same time ensure lateral guidance and a slip protection.
  • Other types of climbing elements are also included.
  • the molding means are suitable for direct embedment of bent down to stirrups, in the structure different from those of other for direct embedment S t e ig elemen t e, z. B. normal crampons or heavier, larger safety crampons.
  • the core segment for the direct insertion of cranked stirrups for example, has the clamping devices assigned to each holder at a distance below the holder. 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 inside of the mold core is removed by removing the core segment becomes free at the top. 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 rest 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 rest of the mandrel to form a solid vibrating unit.
  • the strips with contact and sealing surface on the edge side of the wall section of the core segment ensure good sealing 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 lower edge of the wall section of the core segment is also equipped with a corresponding strip following the shape, for example curvature, of the wall section, which is also provided with a contact and sealing surface and is also pressed in this area against the lower edge of the core wall of the mold core becomes.
  • 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 recess on the cover side and lies flat on the edge the rest of the lid.
  • 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 good on the core segment are transmitted and, above all, a pushing back of the core segment under the effect of the concrete pressure is avoided 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 swivel lever with the push rod is in its dead center position when the core segment in the shaping position is pressed against the core wall of the mold core 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 shifted into the release position or into the closed position, a parallel shift 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 fluid under pressure can first be fed to a flow divider and only from there via individual lines and equally large partial flows to the working cylinders.
  • 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 does not press the core segment out of the closed position in the direction of 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 reversal results from claim 26, in which the continuous piston rod is attached at both ends to the remaining part of the mandrel, while the cylinder housing of the working cylinder is displaceable relative to the piston rod on the latter together with the guide member attached to it.
  • 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 e.g. by the features according to claim 21, i.e. 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 cover part must be detached from the wall section and moved so far in the direction of the release position 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. Individual hites 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 "crampons" used here encompasses all possible forms and configurations of such elements, which have the function of steps and allow access to a shaft composed of such shaft rings.
  • the term crampons covers the normal crampons commonly referred to as well as heavier and larger safety crampons, e.g. each made of cast iron, as well as the climbing elements commonly 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 on the inside and can be replaced on a central vibrator. 14.
  • the central vibrator 14 sits on a base plate 16.
  • the mold core 15 contains a e.g. welded plate 17, with which it is placed on the central vibrator 14 and fastened.
  • the plate 17 is e.g. about three-quarters of a circle.
  • the mandrel 15 is here e.g. round - in another embodiment, not shown, but instead out of round, e.g. oval, square or the like.
  • the mold core 15 has a circular cover 18 and a cylindrical core wall 19 leading down to the base plate 16.
  • the molding device also includes an outer mold jacket (not shown further) and, for example, a lower sleeve and an upper sleeve. These elements can be found in the prior art.
  • the mandrel 15 has an installation device 29, with the aid of which at least one crampon, preferably at the same time several crampons, e.g. four crampons, which can be concreted into the concrete part from the inside.
  • the installation device 29 has a core segment 30, which here is formed from a cover section 31 and a wall section 32 of the mold core 15.
  • the cover section 31 is somewhat larger than a cover-side recess 28 which, in the state according to FIG. 2, is sealingly overlapped by the cover section 31 on the three sides forming 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, where-. solidified by this remaining part of the mandrel 15 and 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 in relation 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 is in relation to the mold core 15 out of its shaping contour (FIGS.
  • the installation device 29 has each element to be concreted, e.g. 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, which is the positionally correct receptacle to be inserted there from the outside through the opening 41-44, element to be concreted, in particular crampons, 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, which is the positionally correct receptacle to be inserted there from the outside through the opening 41-44, element to be concreted, in particular crampons, before the shaping process.
  • the installation device 29 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 a single tensioning drive 94 in the form of a hydraulic or pneumatic working cylinder together, which engages on the one hand on the round guide rods 22 and on the other hand on a holder of the core segment 30, that is, like the clamping devices 88-91, is 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 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 design, and thereafter if other elements, for example differently shaped crampons or the like ., are to be introduced in the same way directly in the shaping process, removed and exchanged for another core segment adapted to it.
  • Such molded concrete parts can either be produced with the same core segment 3G, with receptacles 45 to 48 1 that are completely closed by means of the clamping devices 88 to 91, or this core segment 30 is replaced by another one with a smooth and unbroken wall section 32.
  • 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 e.g. held with its housing on the end of a sheet metal serving at the same time the additional reinforcement of the core wall.
  • 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 shows e.g. a guide rod 20 or 21, which passes through the control element 38 or 39 directly or a guide bush 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 is at least substantially parallel to the central axis 13 of the mandrel 15 from above in the remaining part of the mandrel 15 can be inserted and pulled in the opposite direction.
  • 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 on the two side edges of the wall section 32 as follows.
  • the wall section 32 carries a bar 57, 58 attached to it on each side edge.
  • Each bar 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 it in this overhang region virtually as Fortset - wetting of the inner surface profile of the wall section 32 extending mounting and sealing surface 59, 60 at right angles thereto an area extending 61 or 62.
  • FIG 1 bit 3 of the core segment 30 are the ground.
  • 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 slightly 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.
  • the guide members 51, 52 are formed from rods, rods or the same linear parts, which are provided on each side edge of the wall section 32 on the remaining part of the mandrel 15.
  • the guides 53, 54 are then designed as elements containing closed guide openings, bushes, eyes or the like, 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 moved by means of the two translation drives 36, 37 from the position in which the insertion takes place, e.g. 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 from come to the inside at the edge of the remaining part of the core wall 19. In this closed position, the core segment 30 is then pressed firmly and sealingly in the manner described.
  • a locking device assigned to the turning section 32 of the core segment 30 and mechanically locking it in the pressed closed position, which, when the closed position and the described pressing position are reached, e.g. occurs automatically or comes into the locking position by actuating a special own drive.
  • This locking device has e.g. one locking member per side edge of the wall part 32, e.g. can consist of a toggle lever or other elements known per se.
  • Both working cylinders 36, 37 are designed as double-acting working cylinders, to which the working medium is supplied under pressure via line 69 for the adjusting movement in the closing direction, in the opposite direction to arrow 33, while the working medium under pressure via the line for the opposite adjusting movement in arrow direction 33 72 is supplied.
  • the working fluid which is guided in line 69, for example, does not reach the working cylinders 36, 37. Rather, the flow of working fluid is first divided into two equal individual streams by means of a flow divider 69a, which then lead to the individual working cylinders 36, 37 via assigned lines 70, 71. In the opposite direction, 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 two working cylinders 36, 37 generated contact force 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 firmer, with the rest of the mold core 15 rigid connected part of the entire mandrel 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 section 131 is firmly connected on the underside to a guide member, for example in the form of a guide rod 180, which is oriented essentially at right angles to the central axis 113 and thereby essentially horizontally and is guided in a guide bushing 181 so that it can be moved back and forth in the horizontal direction according to arrow 182 .
  • 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 cover section 131 Before the core segment 130 is removed, for example for changing purposes, the cover section 131 must first be removed from the wall section 132 by removing the countersunk screws 183 and displaced to the left in the direction of arrow 152 at least sufficiently far in FIG. 6 that after that the wall section 132 existing core segment 130 with other parts can be removed upwards can. The procedure is reversed when a new core segment 130 is inserted.
  • 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 moves horizontally in FIG Release position is moved and then back to the closed position. It is advantageous here that the guide rod 180 and guide bush 181 provide 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 are given 200 and 300 larger reference numerals, 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 carrying the strip 255 for example 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. Its piston rod 277 is continuous and is attached at both ends to angles 278 which are welded to the core wall 219, for example. 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 pistons of the same size, laughing 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 Leadership 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, here the bar 356 as part e.g. of 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 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 pivot lever of which is also connected to the shaft 487 in a rotationally fixed manner.
  • the drive device 435 for each of the two pivot levers 485 can have its own, directly engaging translational drive, which is indicated schematically in Fig. 9 with 497 and which e.g. about the middle of the pivot lever 485 hinges 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 at a distance of major 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.
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
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.
DE3422981 1984-06-22

Publications (2)

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

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EP84116498A Expired EP0154038B1 (fr) 1984-02-08 1984-12-29 Noyau de moulage avec éléments réglables

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US (1) US4610422A (fr)
EP (1) EP0154038B1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP0238763A1 (fr) * 1985-08-05 1987-09-30 Opako, S.A. Dispositif de coffrage pour des éléments verticaux en béton
AT398931B (de) * 1988-12-01 1995-02-27 Johann Schluesselbauer Formkern für eine formvorrichtung zum herstellen von rohrförmigen werkstücken aus beton, insbesondere schachtringen

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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

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US645254A (en) * 1899-07-07 1900-03-13 D Edmund Forker Mold for water-tanks.
US2683298A (en) * 1949-03-23 1954-07-13 Howard O Fadden Core for forming concrete articles
DE3110185A1 (de) * 1981-03-17 1982-09-30 Prinzing Georg Gmbh Co Kg "formeinrichtung zur formgebung von betonteilen, insbesondere schachtringen, schachthaelsen od.dgl."

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CA712969A (en) * 1965-07-06 J. Lovers Guy Mold for concrete structures
US1112034A (en) * 1912-09-11 1914-09-29 Walter D Ross Core-bar.
US3762678A (en) * 1970-03-06 1973-10-02 J Thornton Reusable forms for casting walls

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US645254A (en) * 1899-07-07 1900-03-13 D Edmund Forker Mold for water-tanks.
US2683298A (en) * 1949-03-23 1954-07-13 Howard O Fadden Core for forming concrete articles
DE3110185A1 (de) * 1981-03-17 1982-09-30 Prinzing Georg Gmbh Co Kg "formeinrichtung zur formgebung von betonteilen, insbesondere schachtringen, schachthaelsen od.dgl."

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0238763A1 (fr) * 1985-08-05 1987-09-30 Opako, S.A. Dispositif de coffrage pour des éléments verticaux en béton
AT398931B (de) * 1988-12-01 1995-02-27 Johann Schluesselbauer Formkern für eine formvorrichtung zum herstellen von rohrförmigen werkstücken aus beton, insbesondere schachtringen

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EP0154038B1 (fr) 1989-03-15
US4610422A (en) 1986-09-09

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