DK169206B1

DK169206B1 - Mold for the concrete block

Info

Publication number: DK169206B1
Application number: DK299290A
Authority: DK
Inventors: Rgaard Johannes N
Original assignee: Kvm Industrimaskiner
Priority date: 1990-12-17
Filing date: 1990-12-17
Publication date: 1994-09-12
Also published as: EP0562209A1; DK299290A; DK299290D0

Description

DK 169206 B1DK 169206 B1

Den foreliggende opfindelse angår en støbeform til fremstilling af betonbloksten og af den art, som består af en bæreramme for en celledelt formindsats med parallelle sidevægge i de enkelte celler, hvilke celler for-5 trinsvis er åbne i begge ender, således at støbebeton, der tilbringes ovenfra til en vandretliggende støbeform, kan trænge ned i cellerne og efter vibration og eventuel komprimering deri blive udstødt fra cellerne ved at forlade disse gennem de nedre celleender ved en hævning 10 af hele støbeformen op fra en understøtningsflade, der så derefter vil bære de støbte stenemner og eventuelt føre dem bort fra støbeområdet, ifald understøtningsfladen er udformet som en transportør.BACKGROUND OF THE INVENTION The present invention relates to a casting mold for the manufacture of concrete blocks and of the kind consisting of a support frame for a cell-shaped mold insert with parallel sidewalls in the individual cells, which cells are preferably open at both ends, so that the casting concrete applied from above to a horizontal mold, the cells can penetrate and, after vibration and any compression therein, can be ejected from the cells by leaving them through the lower cell ends at a raising 10 of the entire mold up from a support surface which will then support the molded stone blanks. and optionally passing them away from the molding area if the support surface is designed as a conveyor.

Det er et yderst velkendt problem, at sådanne stø-15 beforme skal udføres særdeles robust for at kunne opnå en blot nogenlunde rimelig levetid. Cellevæggene bør være udskifteligt anbragt i bærerammen, fordi de udsættes for et stort slid og derfor bør kunne udskiftes fra tid til anden, uden at hele bærerammestrukturen samti-20 digt skal kasseres, men cellevægelementerne skal også fastholdes overordentligt kraftigt til bærerammen for at de skal kunne holde til de kraftige vibrationer, som rammen udsættes for med henblik på den nødvendige vibre-ring af støbematerialet i cellerne. Det er sædvanligt at 25 benytte cellevægplader, som fastboltes til bæreflader på bærerammen, men da vibrationerne normalt optræder vinkelret på dennes plan, nemlig ved ved brug af en underliggende vibrator, vil altså vibrationspåvirkningerne fremkalde betydelige forskydningskræfter mellem celle-30 vægpladerne og de omgivende bærerammedele, således at de benyttede spændebolte let vil overskæres, hvis de ikke benyttes i en meget kraftig udførelse eller i et meget stort antal, dvs. i begge tilfælde ved en temmelig dyr udførelse af formen.It is an extremely well-known problem that such molds must be made extremely robust in order to achieve a reasonably reasonable service life. The cell walls should be interchangeably placed in the support frame because they are subjected to excessive wear and therefore should be interchangeable from time to time without the entire support frame structure having to be discarded at the same time, but the cell wall elements must also be held extremely tightly to the support frame in order to to withstand the strong vibrations to which the frame is subjected to the necessary vibration of the molding material in the cells. It is customary to use cell wall plates which are bolted to supporting surfaces of the support frame, but since the vibrations usually occur perpendicular to its plane, that is, when using an underlying vibrator, the vibrational effects will produce considerable shear forces between the cell wall plates and the surrounding support frames. so that the clamping bolts used will be easily cut if they are not used in a very powerful version or in a very large number, ie. in both cases by a rather expensive embodiment of the mold.

35 Det sædvanlige er derfor, at man benytter forholds vis billigt udførte forme, som blot ikke har nogen sær- DK 169206 B1 2 ligt lang levetid før det bliver nødvendigt at udskifte cellevægelementerne, hvadenten dette nødvendiggøres af en nedslidning eller af en opstået mekanisk ustabilitet.It is therefore usual to use relatively inexpensive molds which simply do not have a very long life before it becomes necessary to replace the cell wall elements, whether this is necessitated by attrition or mechanical instability.

Det er ved nærværende opfindelse indset, at den 5 operative levetid af en sådan støbeform kan forlænges betydeligt på billiggjort måde, hvis der kan benyttes cellevægdele, som nok fortsat er nedslidelige, men dog optræder med passende stor tykkelse til ikke at være just hurtigt nedslidelige, ifald det sikres, at samme 10 pladedele befæstiges til bærerammen på en sådan måde, at befæstigelsesmidlerne ikke er særligt følsomme overfor de omtalte vibrationspåvirkninger. Dette opnås ifølge opfindelsen ved, at cellevægdelene er udført med langsgående nedre og udstående fortykkelser, som kan indgribe 15 under den nedre kant af bærerammen for holdeindgreb med denne i opadgående retning. Der skal fortsat benyttes spændebolte til fastspænding af cellevægdelene imod rammens indersider, men disse bolte kan herefter dimensioneres ganske svagt, da de ikke skal optage de nævnte 20 forskydningskræfter, som nu ifølge opfindelsen vil blive optaget på bredt fordelt måde af de nævnte pladefortykkelser i anlæg mod underkanten af rammedelen.It is recognized by the present invention that the operative life of such a mold can be significantly extended in a low-cost way if cell wall portions which may still be degradable but appear to be of sufficient thickness to be not rapidly degradable can be used. if it is ensured that the same 10 plate parts are fastened to the support frame in such a way that the fasteners are not particularly sensitive to the mentioned vibrational effects. This is achieved according to the invention in that the cell wall portions are made with longitudinal lower and protruding thickenings which can engage 15 below the lower edge of the support frame for holding engagement therewith in an upward direction. Clamping bolts continue to be used for clamping the cell wall portions against the inside of the frame, but these bolts can then be dimensioned quite weakly as they do not have to absorb the aforementioned shear forces which will now be absorbed in a widely distributed manner by the said plate thicknesses in abutment against the lower edge of the frame portion.

Herved kan altså opnås en særdeles fordelagtig befæstigelse af de celleplader, som støder op til den 25 indre periferi af bærerammen, men celledelingen i denne vil indebære, at der også arbejdes med tværgående cellevægge, som ved enderne skal befæstiges til bærerammen. Denne befæstigelse rummer et separat problem, som imidlertid ved opfindelsen kan løses på den måde, at yder-30 kanterne af de tværgående vægdele er udformet med et nedre fremspring, der ligesom de nævnte langsgående fortykkelser kan indgribe under den nedre kant af bærerammens indre støtteflade og derved stabilisere også disse vægelementer mod at kunne opskydes ved den nedefra 35 frembragte vibration af formen. Enderne af disse tværgående vægdele kan generelt være udragende til samlingsom- DK 169206 B1 3 riderne mellem de pladedele, som forløber langs med modstående indersidedele af bæreformen, og ifølge opfindelsen kan en yderligere fastholdelse af tværpladerne opnås ved, at disses endedele er udformet med et eller 5 flere fremspringende partier, som griber ind i modsvarende sideudsparinger i sidekanterne af de pladelele, der er indspændt imod rammedelens indvendige overflade.Thus, a particularly advantageous attachment of the cell plates adjacent to the inner periphery of the support frame can be achieved, but the cell division thereof will also involve working with transverse cell walls which must be attached to the support frame at the ends. This attachment presents a separate problem which, however, can be solved by the invention in that the outer edges of the transverse wall portions are formed with a lower protrusion which, like the longitudinal thickens, can engage under the lower edge of the supporting frame's inner support surface and thereby also stabilizing these wall elements against being able to be moved by the vibration of the mold produced from below. The ends of these transverse wall portions may generally project to the junction between the plate portions extending along opposite inner portions of the carrier, and according to the invention a further retention of the transverse plates can be achieved by their end portions being formed with an or 5 shows a plurality of projecting portions which engage in corresponding side recesses in the side edges of the plate members which are clamped against the inner surface of the frame member.

Der opnås herved en yderligere forankring af de tværgående celleplader.A further anchoring of the transverse cell plates is thereby achieved.

1 0 Opfindelsen forklares i det følgende nærmere under henvisning til tegningen, på hvilken fig. 1 er et perspektivbillede til illustration af opfindelsens princip, og fig. 2 et ovenbillede af en monteret blokstens form. 15 Den i fig. 1 viste støbeform består af en ydre rammedel 2 med sider af kraftige, højkantstillede pladejernstykker udført med boltehuller 4 for bolte 6 til fastspænding af slidstærke, indvendige beklædningsplader 8 til rammen. Rammen er på konventionel måde udført med 20 en ydre støttekonstruktion, der bortset fra en antydet fodflange ikke er nærmere illustreret.The invention will now be explained in more detail with reference to the drawing, in which: 1 is a perspective view illustrating the principle of the invention; and FIG. 2 is a top view of the shape of a mounted block stone. 15 The embodiment of FIG. 1 molding consists of an outer frame member 2 with sides of strong, high-angle sheet iron pieces made with bolt holes 4 for bolts 6 for clamping durable, inner lining plates 8 to the frame. Conventionally, the frame is provided with an outer support structure which, apart from a suggested foot flange, is not further illustrated.

Hver af slidpladerne 8 er ved deres yderside tildannet med en nedre, udadragende vulst 12, som ved monteringen og fastboltningen af pladerne bringes til at 25 ligge støttende an mod underkanten af de respektive rammestykker.Each of the wear plates 8 is formed at their exterior with a lower, protruding bead 12 which, during mounting and bolting of the plates, is caused to abut abut the lower edge of the respective frame pieces.

Rammen er opbygget med nogle tværgående skillevægge 14 af samme slidstærke materiale som pladerne 8, og disse plader strækker sig over hele bredden af rammen, 30 dvs. med deres modstående ender stødende op til rammesiderne. Pladerne 8 er modsvarende afpasset på en sådan måde, at de som nærmere vist i fig. 2 udfylder mellemrummene mellem enderne af tværpladerne 14, hvorved disse er fastholdt i rammens længderetning.The frame is constructed with some transverse partitions 14 of the same durable material as the plates 8, and these plates extend over the entire width of the frame, i.e. with their opposite ends abutting the frame sides. The plates 8 are correspondingly adapted in such a way that, as shown in FIG. 2 fills the spaces between the ends of the transverse plates 14, thereby holding them in the longitudinal direction of the frame.

35 Tværpladerne 14 er ved enderne udformet med nedre fremspring 16, der er udragende under de modstående DK 169206 B1 4 formsiders underkanter, således at disse plader vil være effektivt fastholdt mod at skydes opad i formen. I endekanterne af pladerne 14 er udformet et indhak 18, og i højde med disse indhak er der på de tilstødende endekan-5 ter af sidepladerne 8 tildannet fremspring 20, som indgriber i de respektive indhak 18 og derved låser tværpladerne yderligere, her også imod nedskydning fra formen.The transverse plates 14 are formed at the ends with lower projections 16 protruding below the lower edges of the opposing DK 169206 B1 4 so that these plates will be effectively retained against sliding upwards in the mold. In the end edges of the plates 14, a notch 18 is formed, and at the height of these notches, projections 20 are formed on the adjacent end edges of the side plates 8, which engage the respective notches 18, thereby locking the transverse plates further, here also against firing. from the mold.

Eventuelt kunne der modsvarende benyttes et omvendt 10 holdeindgreb, hvor tværpladerne 14 ved hjælp af udstående endedele blev fastholdt i slidser udformet i sidepladerne 8 eller i stødfugeområder mellem disse.Optionally, an inverted 10 holding engagement could be used where the transverse plates 14 were retained by means of protruding end portions in slots formed in the side plates 8 or in butt joint areas therebetween.

Både sidepladerne 8 og tværpladerne 14 vil på grund af de nedre holdedele 12 og 16 rage et stykke neden 15 under underkanten af rammen 2. Det er ønskværdigt, at rammen står på underlaget med en forholdsvis tynd kant, og da disse holdedele ikke behøver at nå helt ud til ydersiden af rammen, kan de ydermere bidrage ved dannelse af en tynd ståkant, uden at de tynde slidplader lider 20 skade derved.Both the side plates 8 and the transverse plates 14, due to the lower holding members 12 and 16, will project a distance below 15 below the bottom edge of the frame 2. It is desirable that the frame is on the substrate with a relatively thin edge, and since these holding parts do not need to reach further to the outside of the frame, they may further contribute to the formation of a thin upright, without the thin wear plates suffering 20 damage thereby.

Det vil forstås, at de bolte 6, hvormed inderplade-beklædningen fastholdes til rammen 2, vil blive væsentligt aflastede med hensyn til overførelse af lodrette kræfter ved lodret vibrering af formen nedefra, da op-25 skydningspåvirkningerne i hovedsagen vil blive optaget af de nedre fremspringende dele 12 og 16 ved disses anlæg mod underkanterne af rammestykkerne. Af samme grund behøver boltene ikke at dimensioneres specielt kraftigt, ligesom de vil udmærke sig ved en lang levetid.It will be appreciated that the bolts 6 with which the inner plate lining is retained to the frame 2 will be substantially relieved of transfer of vertical forces by vertical vibration of the mold from below, as the firing effects will be substantially absorbed by the lower projections. parts 12 and 16 at their abutment against the lower edges of the frame pieces. For the same reason, the bolts do not need to be particularly strongly dimensioned, just as they will distinguish themselves for a long life.

3030

Claims

1. A mold for the manufacture of the concrete block and of the type having a support frame for a mold insert consisting of wear plates bolted to the inside of the frame, characterized in that the wear plates 5 are made with lower, protruding extensions which are arranged against the downward-facing lower edge of the support frame.

Mold according to claim 1, with wear plates disposed both on the inside of the frame and freestanding transverse space between two opposite frame sides, characterized in that the transverse wear plate (s) at the ends are made with lower projections which extend below the frame bottom in that these plates are also generally slightly below the lower edge level of the frame 15.

A mold plate wear set according to claim 1, comprising a plurality of wear plates made with tension holes suitable for corresponding holes in the mold frame support frame, characterized in that the wear plates 20 are provided with lower protruding parts for engagement under the bottom of the support frame.