EP2085199B1 - Vorrichtung mit verbesserter Ausstoßbasis und Verfahren zum Befestigen einer Einlegeplatte - Google Patents

Vorrichtung mit verbesserter Ausstoßbasis und Verfahren zum Befestigen einer Einlegeplatte Download PDF

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Publication number
EP2085199B1
EP2085199B1 EP09075033.2A EP09075033A EP2085199B1 EP 2085199 B1 EP2085199 B1 EP 2085199B1 EP 09075033 A EP09075033 A EP 09075033A EP 2085199 B1 EP2085199 B1 EP 2085199B1
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EP
European Patent Office
Prior art keywords
ejector
mould container
mould
container part
ejector base
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Active
Application number
EP09075033.2A
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English (en)
French (fr)
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EP2085199A1 (de
Inventor
Wilhelmus Jacobus Maria Kosman
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.)
Beheermaatschappij De Boer Nijmegen BV
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Beheermaatschappij De Boer Nijmegen BV
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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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
    • B28B7/366—Replaceable lining plates for press mould
    • 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
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps

Definitions

  • the present invention relates to a mould container part comprising an ejecting device as defined in the preamble of claim 1. It furthermore relates to a mould container press for manufacturing green bricks from clay for the brick manufacturing industry and a method for fixing an insert plate to an ejector base in a mould container part.
  • mould container presses to which the present invention relates, deformable clay is pressed in mould containers (usually covered with sand). The green brick formed in the mould container is then released in order to be dried and fired.
  • a mould container press comprises a chain conveyor which is assembled from a large number of mutually connected mould container parts.
  • Each mould container part generally comprises a plurality of mould containers in which the green bricks are formed.
  • Ejectors are arranged in each mould container part for the purpose of pressing the green bricks out of the respective mould container.
  • Such ejectors are subject to wear and must therefore be regularly replaced with new ejectors. Partly due to the large number of ejectors per mould container press, this is a time-consuming repair, wherein the mould container press cannot be employed for the production of bricks for a considerable length of time.
  • EP-A1-0 917 938 discloses a mould container part comprising an ejector base to which an insert plate, preferably made of rubber, is releasably mounted using screws in accordance with the preamble of claim 1.
  • the ejector bases of the ejectors are usually provided with insert plates which must be replaced regularly. Due to the repeated exposure to hot and moist clay and under the compression forces of the mould container press the screws with which the insert plates are attached to a mother plate of the ejector have a tendency to become rust-bound. Replacement of an insert plate in practice often involves time-consuming operations such as drilling out an old screw and tapping a new screw thread before a new screw can be applied for the purpose of fastening a new insert plate.
  • a mould container press with 24 mould containers per mould container part, which comprises a total of 50 mould container parts, has no less than 1200 ejectors. Replacement of all the ejector bases of these ejectors is very labour-intensive, wherein the mould container press cannot be employed for the production of bricks for a considerable length of time.
  • An object of the present invention is to provide a device with an ejecting device and methods therefor which is improved relative to the prior art and wherein at least one of the above stated problems is obviated.
  • an insert plate which is connected to the ejector base with a plug and screw connection, this further reducing the period of time for which the mould container press is unavailable for the production of bricks.
  • an old insert plate is replaced, only the screw need be removed from the old plug and a new plug optionally arranged. This takes considerably less time than retapping a screw thread, which has been found to be regularly necessary in practice because the screws tended to become rust-bound due to the repeated exposure to hot and moist clay and under the compression forces of the mould container press. Such rust-bound screws had to be drilled out in order to remove an old insert plate.
  • the ejecting device further comprises:
  • an assembled ejecting device can be displaced through the opening in the mould container part, this ejecting device can already be preassembled elsewhere. According to the invention the period of time for which the mould container press cannot be utilized for manufacturing bricks as a result of repair or replacement operations on the ejecting devices is reduced.
  • the intermediate member is adapted, in the situation arranged between the tensioning means and the opening, to function as stop for the at least slightly biased tensioning means.
  • the intermediate member is a spring washer with a recess, whereby the intermediate member can be arranged round the ejector shaft after the tensioning means and the stop have been arranged. It is hereby possible to apply a preassembled ejecting device.
  • the ejector shaft is connected in fixed manner to the ejector base, this having the advantage that according to the invention a welded connection can now be applied instead of a connection with screw thread.
  • a welded connection is robust, and the step of assembling shaft and bottom plate is unnecessary, which results in time-saving during replacement.
  • connection is 'non-releasable', or that the connection can be released only in a destructive manner, such as for instance with a saw or flame cutter.
  • the ejector shaft is provided with a screw thread at least on its outer end remote from the ejector base.
  • the ejector shaft comprises a bolt which is attached in fixed manner to the ejector base with a head end of the bolt, for instance by means of a weld connection.
  • the tensioning means comprise a compression spring which is arranged around the ejector shaft and which pulls the ejector base downward in the mould container until the ejector shaft is displaced for pressing out of the mould container a green brick formed therein.
  • the stop comprises at least a nut arranged on the screw thread.
  • This nut which is for instance a cap nut, can be displaced over the screw thread to a position in which the tensioning means have a desired bias.
  • the position of the cap nut can be secured with a lock nut.
  • the insert plate is a rubber plate.
  • rubber plates are flexible, and sand and clay adhere less to rubber than to for instance wood or plastic.
  • the mould containers hereby wear less when rubber plates are used than when wooden or plastic plates are used.
  • the present invention further relates to a mould container press for manufacturing green bricks from clay for the brick manufacturing industry according to claim 9.
  • the ejecting device is adapted to eject a green brick present in the mould container onto an associated take-off plate during a release stage.
  • the present invention further relates to a method for fixing an insert plate to an ejector base in a mould container part as described above, said method comprising the following steps of:
  • Figure 1 shows a cut-away view of a prior art mould container part 2 as disclosed in EP-A1-0917938 , which shows a mould container 4 which is enclosed by upright walls 6 and a displaceable ejector base 8 of an ejector 10.
  • a cover plate (not shown) on which the green bricks - after being released from mould container 4 using ejector 10 - are discharged to for instance a drying chamber for further treatment.
  • Prior art ejector 10 comprises an ejector shaft 12 which is provided with an external screw thread on its outer ends 14, 16. Using external screw thread 14 the ejector shaft 12 is fastened in a hole with internal screw thread in ejector base 8.
  • Ejector 10 lies under bias of a spring 18, which presses with its one outer end 20 against a bottom wall 24 of mould container part 2. With its other outer end 22 the spring 18 presses against a press-out beam 28 on which ejector shaft 12 is mounted using nuts 30, 32 and lock nut 34. When press-out beam 28 is displaced, ejector bases 8 are displaced via ejector shafts 12 for the purpose of pressing a green brick out of mould container 4.
  • ejector base 8 is assembled from a mother plate 36 and a releasable plate 38 arranged thereon.
  • the connection between mother plate 36 and releasable plate 38 takes place using screws 40.
  • FIG. 2 shows a cut-away side view of an ejector 60 and a mould container part 52.
  • Mould container part 52 comprises different mould contains 54 combined to form a unit.
  • Mould container part 52 further comprises a chain part 86 onto which link parts 88 are welded.
  • a shaft 94 is inserted through the link parts, these mould container parts 52 are combined to form a chain conveyor (not shown).
  • a runner 90 is also provided to lock the shaft 94 through link parts 88.
  • Ejector 60 is assembled from an ejector base 58 and an ejector shaft 62 which is provided with screw thread 64 on at least its side remote from ejector base 58.
  • ejector shaft 62 forms part of a bolt which is fixedly welded with its bolt head 66 to ejector base 58.
  • Such bolts are commercially available in different lengths and can be applied without machine-finishing being required.
  • ejector shaft 62 comprising a threaded end of a bolt.
  • a nut (not shown) is in this case welded fixedly to ejector base 58. Ejector shaft 62 is then screwed with its screw thread fixedly into this nut.
  • a spring 68 Arranged round the ejector shaft is a spring 68 which engages with its outer end 72 on an edge 78 of a cap nut 76 screwed onto the outer end of ejector shaft 62 provided with screw thread 64.
  • This cap nut 76 is preferably a hollow cap nut so that it can be displaced freely over screw thread 64 of ejector shaft 62 in order to provide a flexible length adjustment. Once set to the desired length, the position of cap nut 76 is secured with a lock nut 80.
  • Ejector base 58 is arranged displaceably in mould container 54 of mould container part 52, as will be elucidated hereinbelow.
  • Mould container part 52 comprises in its bottom wall 74 a hole 82 which has dimensions such that the assembled ejector 60, i.e. mounted with cap nut 76 and spring 68, can be displaced through this hole (arrow A in figure 2 ).
  • Hole 82 therefore has a diameter which is at least slightly larger than the outer diameter of edge 78 of cap nut 76 and spring 68. Because an assembled ejector 60 is displaceable through the hole, this ejector 60 can already be preassembled elsewhere. The period of time for which the mould container press is unavailable for the production of bricks can therefore be reduced considerably.
  • spring 68 is compressed so far with a tool (not shown) that the upper outer end 70 of spring 68 is situated below bottom wall 74 of mould container part 52.
  • a spring washer 84 is then arranged around ejector shaft 62 in the space between the upper outer end 70 of compressed spring 68 and bottom wall 74 (arrow B in figure 2 ).
  • This spring washer 84 comprises two annular parts 85 and 87 offset relative to each other ( figure 4 ).
  • a recess 89 is further arranged so that spring washer 84 can slide around ejector shaft 62.
  • the first annular part 85 has an outer diameter slightly smaller than the diameter of hole 82 in bottom wall 74 of mould container part 52, so that annular part 85 fits into hole 82 (see figure 3 ).
  • the second annular part 87 which is offset relative to the first annular part 85, has a larger diameter than hole 82 in bottom wall 74, so that annular part 87 can function as contact surface with bottom wall 74, while annular part 85 is situated in hole 82.
  • spring washer 84 Once spring washer 84 has been arranged around ejector shaft 62 between bottom wall 74 and outer end 70 of spring 68, the tool (not shown) which compresses spring 68 is removed. The pressure will be eased on spring 68 which is left biased to at least some extent between the cap nut 76 with stop 78 and the spring washer 84. Annular part 85 of spring washer 84 functions as contact surface for outer end 70 of spring 68. Because spring 68 lies biased to at least some extent between the bottom wall 74 with spring washer 84 and the cap nut 76 with stop 78, spring washer 84 is pressed into hole 82. Because annular parts 85, 87 are offset relative to each other, annular part 87 functions as contact surface with bottom wall 74 while annular part 85 prevents spring washer 84 being able to move out of hole 82.
  • Ejector base 58 comprises a bottom plate 99, a mother plate 100 and a plate 102 arranged releasably thereon.
  • the plug connection according to the present invention shown in detail in figure 5 comprises a plug 106 which can be placed through a drilled hole 104, after which releasable plate 102 is fastened to bottom plate 99 and mother plate 100 by arranging a screw 108 in plug 106.
  • Bottom plate 99 and mother plate 100 can be manufactured integrally.
  • the plug connection according to the present invention has the advantage that an old plug 106 can easily be removed and replaced with a new plug 106.
  • the plug 106 also extends at least through mother plate 100 to the interface between mother plate 100 and releasable plate 102, or even to the upper surface of releasable plate 102 (position a in figure 5 ).
  • This has the advantage that, when the screw connection of plug 106 is used to secure protrusions (not shown), so-called frogs, to be arranged in mould container 54, plug 106 ensures the position of mother plate 100 relative to fixed bottom plate 99 while screw 108 is temporarily removed. It is of course also possible to envisage an application wherein the plug extends to the interface between fixed bottom plate 99 and mother plate 100 (position b in figure 5 ).
  • a brick length correction plate 98 can further be arranged on upright wall 56 ( figures 2 and 3 ).
  • This brick length correction plate 98 comprises a plate which is fixed against wall 56 in mould container 54.
  • the length dimension of the green brick (not shown) to be arranged in mould container 54 is reduced by the thickness of correction plate 98.
  • the size of the green bricks to be formed can be corrected by the simple operation of arranging such a correction plate 98 in each mould container 54. This correction is for instance desirable so as to anticipate the shrinking behaviour of the clay during the drying and firing by adjusting the size of the green brick beforehand to the measure of shrinkage expected during drying and firing of the respective clay composition. Because only a few plates have to be placed, removed or exchanged, a correction of the size of the green brick can be realized in relatively simple manner and at low cost.
  • Suitable materials for correction plate 98 are for instance wood, plastic and metal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Claims (11)

  1. Formbehälterteil (52) mit wenigstens einem Formbehälter (54) zum darin Formen eines Rohziegels aus Ton oder Lehm, wobei der Formbehälterteil (52) eine Ausdrückeinrichtung (60) zum Herausdrücken des im Formbehälter (54) zu formenden Rohziegels aus dem Formbehälter (54) aufweist, wobei die Ausdrückeinrichtung (60) aufweist:
    - eine Ausdrückerbasis (58)
    - wobei auf der Ausdrückerbasis (58) eine Einsetzplatte (102) angeordnet ist,
    dadurch gekennzeichnet, dass die Einsetzplatte (102) mit der Ausdrückerbasis (58) durch eine Steck- und Schraubverbindung verbunden ist.
  2. Formbehälterteil (52) nach Anspruch 1, wobei die Ausdrückeinrichtung (60) weiter aufweist:
    - einen Ausdrückerschaft (62), der mit einem ersten äußeren Ende mit der Ausdrückerbasis (58) verbunden ist und an einem zweiten äußeren Ende mit einem Anschlag (78) versehen ist, und
    - eine Spanneinrichtung (68), die um den Ausdrückerschaft (62) herum angeordnet ist und die mit dem Anschlag (78) in Eingriff gebracht werden kann, und
    - wobei der Formbehälterteil (52) eine Öffnung (82) aufweist, durch die es möglich ist, die Ausdrückeinrichtung (60) mit ihrem Schaft (62), der die um ihn herum angeordnete Spanneinrichtung (68) und den Anschlag (58) aufweist, zu verschieben, und
    - wobei im Formbehälterteil (52) zwischen der Spanneinrichtung (68) und der Öffnung (82) ein Zwischenteil (84) angeordnet und entfernt werden kann.
  3. Formbehälterteil (52) nach Anspruch 2, wobei das Zwischenteil (84) in der Situation, in der es zwischen der Spanneinrichtung (68) und der Öffnung (82) angeordnet ist, geeignet ist zum Funktionieren als ein Anschlag für die wenigstens leicht vorgespannte Spanneinrichtung (68).
  4. Formbehälterteil (52) nach einem der vorhergehenden Ansprüche, wobei der Ausdrückerschaft (62) fest mit der Ausdrückerbasis (58) verbunden ist.
  5. Formbehälterteil (52) nach Anspruch 4, wobei der Ausdrückerschaft (62) wenigstens an seinem von der Ausdrückerbasis (58) fernen äußeren Ende mit einem Schraubengewinde versehen ist.
  6. Formbehälterteil (52) nach einem der vorhergehenden Ansprüche, wobei der Ausdrückerschaft (62) einen Bolzen (66) aufweist, der mit einem Kopfende des Bolzens fest an der Ausdrückerbasis (58) angebracht ist.
  7. Formbehälterteil (52) nach einem der vorhergehenden Ansprüche, wobei die Spanneinrichtung (68) eine um den Ausdrückerschaft (62) herum angeordnete Druckfeder aufweist.
  8. Formbehälterteil (52) nach einem der vorhergehenden Ansprüche, wobei der Anschlag wenigstens eine an dem Schraubengewinde angebrachte Mutter aufweist.
  9. Formbehälterpresse zur Herstellung von Rohziegeln aus Ton oder Lehm für die Ziegelherstellungsindustrie, aufweisend:
    - einen zirkulierenden Förderer, der Formbehälterteile mit einem oder mehreren Formbehältern trägt,
    - einen Vorratsbehälter für Ton oder Lehm, der über den Formbehältern angeordnet ist,
    - eine Ton- bzw. Lehm-Anordnungseinrichtung zum Anordnen von Ton oder Lehm aus dem Vorratsbehälter in den Formbehältern,
    - Mittel zum Bedecken einer offenen Seite der Formbehälter mit entfernbaren Platten;
    - einen Formbehälterteil (52) nach einem der Ansprüche 1 bis 8, wobei:
    - wenigstens eine Ausdrückeinrichtung (60) auf dem Förderer angeordnet und relativ zum Förderer bewegbar ist,
    - wobei die Ausdrückeinrichtung (60) geeignet ist zum Ausdrücken eines im Formbehälter (54) vorhandenen Rohziegels auf eine zugeordnete Abnahmeplatte während einer Freigabestufe, und
    - wobei eine Einsetzplatte (102) auf der Ausdrückerbasis (58) angeordnet ist, welche Platte mit der Ausdrückerbasis durch eine Steckbolzen- und Schraubenverbindung verbunden ist.
  10. Verfahren zum Befestigen einer Einsetzplatte (102) an einer Ausdrückerbasis (58) in einem Formbehälterteil nach einem der Ansprüche 1 bis 9, aufweisend die folgenden Schritte:
    - Positionieren der Einsetzplatte (102) auf der Ausdrückerbasis (58) derart, dass in der Einsetzplatte angeordnete Löcher zu in der Ausdrückerbasis (58) angeordneten Löchern ausgerichtet sind,
    - Einbringen eines Steckbolzens (106) durch die ausgerichteten Löcher und
    - Anbringen einer Schraube (108) in dem Steckbolzen (106), um die Einsetzplatte (102) an der Ausdrückerbasis (58) zu befestigen.
  11. Verfahren nach Anspruch 10, vorausgegangen von den Schritten:
    - Entfernen einer zu ersetzenden Einsetzplatte (102) von der Ausdrückerbasis, und
    - Entfernen vom Loch in der Ausdrückerbasis (58) eines Steckbolzens, mit dem die zu ersetzende Einsetzplatte befestigt worden ist.
EP09075033.2A 2008-01-18 2009-01-19 Vorrichtung mit verbesserter Ausstoßbasis und Verfahren zum Befestigen einer Einlegeplatte Active EP2085199B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1034930A NL1034930C2 (nl) 2008-01-18 2008-01-18 Inrichting met verbeterde stempelinrichting en werkwijzen daarvoor.

Publications (2)

Publication Number Publication Date
EP2085199A1 EP2085199A1 (de) 2009-08-05
EP2085199B1 true EP2085199B1 (de) 2014-01-15

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Application Number Title Priority Date Filing Date
EP09075033.2A Active EP2085199B1 (de) 2008-01-18 2009-01-19 Vorrichtung mit verbesserter Ausstoßbasis und Verfahren zum Befestigen einer Einlegeplatte
EP09075035A Withdrawn EP2087977A3 (de) 2008-01-18 2009-01-19 Vorrichtung mit verbessertem Formhohlraum und damit ausgerüsteter Behälterteil
EP09702251A Active EP2242627B1 (de) 2008-01-18 2009-01-19 Vorrichtung mit verbesserter auswurfvorrichtung und verfahren dafür

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP09075035A Withdrawn EP2087977A3 (de) 2008-01-18 2009-01-19 Vorrichtung mit verbessertem Formhohlraum und damit ausgerüsteter Behälterteil
EP09702251A Active EP2242627B1 (de) 2008-01-18 2009-01-19 Vorrichtung mit verbesserter auswurfvorrichtung und verfahren dafür

Country Status (5)

Country Link
EP (3) EP2085199B1 (de)
AT (1) ATE521464T1 (de)
ES (2) ES2458505T3 (de)
NL (1) NL1034930C2 (de)
WO (1) WO2009091244A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015183091A1 (en) * 2014-05-28 2015-12-03 Beheermaatschappij De Boer Nijmegen B.V. Mould container part for the manufacture of bricks slips, mould container pressing device and method for application thereof
NL2012915B1 (nl) * 2014-05-28 2016-06-09 Beheermaatschappij De Boer Nijmegen B V Vormbakdeel voor de vervaardiging van steenstrips, vormbak-persinrichting en werkwijze voor de toepassing daarvan.
NL2012937B1 (nl) * 2014-06-03 2016-06-22 Beheermaatschappij De Boer Nijmegen B V Uitstootinrichting, alsmede daarvan voorzien vormbakdeel en vormbak-persinrichting.
CN104959540A (zh) * 2015-07-03 2015-10-07 南京禄口汽车配件厂 用于开关轴铝柱的复合加工模具
NL2017672B1 (nl) * 2016-10-25 2018-05-04 Beheermaatschappij De Boer Nijmegen B V Inrichting met verbeterde uitstoters en werkwijze daarvoor
CN111002440B (zh) * 2019-10-15 2021-08-17 郑州度阳环保科技有限公司 一种提高生产效率的大小可调式桥梁盖板模具
CN114474820B (zh) * 2021-12-16 2024-01-09 徐州启峰智能科技有限公司 一种5g基站通讯件生产用冲床

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506614C2 (de) * 1995-02-24 1997-03-27 Hiesl Gerhard Ing Grad Betonsteinfertigungseinrichtungen, insbesondere für deren Auflasten
NL1007600C2 (nl) * 1997-11-21 1999-05-25 Boer Beheer Nijmegen Bv De Inrichting voor het vervaardigen van vormlingen voor de steenindustrie.
DE69915319T2 (de) * 1999-12-29 2005-03-17 Industrie Pica S.P.A. Anlage mit formen mit auswechselbaren bodenplatten zum herstellen von steinformlingen
NL1026193C2 (nl) * 2004-05-13 2005-11-15 Beheermij De Boer Nijmegen Bv Inrichting voor het vervaardigen van vormelingen.
DE102006026117A1 (de) * 2006-06-03 2007-12-06 Kobra Formen Gmbh Anordnung zur Herstellung von Betonformsteinen, Druckplatte für eine solche Anordnung und Verfahren zur Herstellung eines solchen Druckplatte

Also Published As

Publication number Publication date
EP2087977A2 (de) 2009-08-12
WO2009091244A1 (en) 2009-07-23
ES2368026T3 (es) 2011-11-11
EP2087977A3 (de) 2009-11-18
EP2085199A1 (de) 2009-08-05
EP2242627B1 (de) 2011-08-24
EP2242627A1 (de) 2010-10-27
ES2458505T3 (es) 2014-05-05
NL1034930C2 (nl) 2009-07-21
ATE521464T1 (de) 2011-09-15

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