DK141927B - Apparatus for the production of fiber-reinforced plastic articles with a container for filling molds. - Google Patents
Apparatus for the production of fiber-reinforced plastic articles with a container for filling molds. Download PDFInfo
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- DK141927B DK141927B DK160875AA DK160875A DK141927B DK 141927 B DK141927 B DK 141927B DK 160875A A DK160875A A DK 160875AA DK 160875 A DK160875 A DK 160875A DK 141927 B DK141927 B DK 141927B
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- mold
- container
- filling
- molding
- opening
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Artificial Filaments (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
(jf/ (11) FREMLÆGGELSESSKRIFT 1 i* 1927 DANMARK B 29 D 3/02 "inilfc t(21) Anaagning nr. 1608/75 (22) Indleveret den 15· apr. 1975 (23) Løbedag 15· apr. 1975 (44) Ansøgningen fremlagt og fremleeggeleesekriftet offentliggjort den 21. jul.· 1 980 DIREKTORATET FOR L ^ PATENT-OG VAREMÆRKEVÆSENET (30) Prioritet begæret fra den(cf. ((11) PUBLICATION NOTICE 1 i * 1927 DENMARK B 29 D 3/02 "inilfc t (21) Application No 1608/75 (22) Filed on 15 Apr. 1975 (23) Running Day 15 Apr. 1975 ( 44) The application presented and the petition published on 21 Jul · 1 980 DIRECTORATE OF L ^ PATENT AND TRADEMARKET (30) Priority requested from the
16. apr. 1974, 7^5029, SEApr 16 1974, 7 ^ 5029, SE
5. dec. 1974, 7415278, SEDec 5 1974, 7415278, SE
(71) NEMO POLYMERER AB, Box 2726, 782 00 Malung, SE.(71) NEMO POLYMERER AB, Box 2726, 782 00 Malung, SE.
(72) Opfinder: Nils-Erik ()lsson, Box 2727, 782 00 Malung, SE.(72) Inventor: Nils-Erik () lsson, Box 2727, 782 00 Malung, SE.
(74) Fuldmægtig under sagens behandNng; Nørrejysk Patentbureau ApS.(74) Plenipotentiary; Nørrejysk Patentbureau ApS.
(64) Apparat til fremstilling af fiberarmerede forms tof gens tande med en beholder til ifyldning af støbeforme.(64) Apparatus for the production of fiber-reinforced molds with the teeth of a mold-filling container.
Den foreliggende opfindelse angår et apparat til fremstilling af fiberarmerede forastof genstande aed en beholder til ifyldning-af støbeforme, hvilket apparat omfatter en, ved sin nedre del afskåret og med en i lodret retning bevægelig kegleformet ventilprop forsynet, kegleformet beholder, hvis overdel har åbninger til indføring af en flydende eventuelt med armeringsaateriale blandet termohærdende harpiks og til tilslutning af trykluft, en centralt anbragt drejelig aksel og delelige forme »ed kegleformet indløb og tilhørende kegleformet formtap.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for the manufacture of fiber-reinforced pre-fabricated articles having a container for filling molds, which comprises a cone-shaped valve-shaped, cut-off and vertically movable, stopper-shaped container, the upper part of which has openings for introducing a liquid, optionally with reinforcing material, mixed with thermosetting resin and for connecting compressed air, a centrally located pivot shaft and divisible molds with a cone-shaped inlet and associated cone-shaped die.
Det er kendtr bl.a. fra svensk fremlæggelsesskrift nr. 313.175,1 forbindelse med fyldning af støbeforme, at anvende et apparat af 141927 2 ovennævnte type. Ifølge det svenske fremlæggelsesskrift består apparatet af en beholder, der foroven er forsynet med en åbning for indføring af støbemasse og en åbning for tilslutning af trykluft. Beholderens nedre kegleformede del i hvis midte, der er en åbning til gennemstrømning af støbemasse til en støbeform, danner sæde for en kegleformet ventilprop, der ved hjælp af en trækstang kan åbne og lukke for omtalte åbning og således regulere tilførslen af støbemasse til støbeformen. Påfyldningsstudsen på støbeformen, der danner tæt kontakt med beholderen under påfyldning af støbemasse i støbeformen, forbliver i åben tilstand når beholderen, efter endt påfyldning, f jerneå og anvendes til påfyldning af en ny støbeform. Derved er der mulighed for at noget støbemasse, på grund af det overtryk, der fremkommer når støbemassen sprøjtes i støbeformen ved hjælp af trykluft, vil strømme ud af formens påfyldn i rigsstuds og være årssag til en uhensigtsmæssig produktionsproces grundet nødvendiggørelse af en efterbehandling af det støbte emne.It is known among other things. from Swedish Patent Specification No. 313,175.1 connection with filling molds, to use an apparatus of the above type. According to the Swedish publication specification, the apparatus consists of a container which is provided with an opening at the top for injection molding and an opening for connection of compressed air. The lower cone-shaped portion of the container, the center of which is an opening for flow of mold to a mold, forms the seat of a cone-shaped valve plug which, by means of a drawbar, can open and close the said opening and thus regulate the supply of mold to the mold. The filling nozzle of the mold, which forms close contact with the container during filling of the mold in the mold, remains open when the container, after filling, is removed and used to fill a new mold. Thereby, it is possible that some molding material, due to the overpressure that results when the molding material is sprayed in the mold by means of compressed air, will flow out of the mold filling in the molding and be the cause of an inappropriate production process due to the necessity of finishing the molding. subject.
Problemet med lukning af formens påfyldnings studs efter endt påfyldning er løst ifølge tysk offentliggørelsesskrift nr. 1 91o 7o9, hvor der i påfyldningsåbningen er anbragt en fjederbelastet kontraventil, som automatisk lukker når påfyldningsindretningen ikke længere danner tryk på ventilproppens overside. Dette arrangement kræver selvsagt, at der i hver af de benyttede støbeforme findes en fjederbelastet kontraventil til lukning af påfyldningsåbningen.The problem of closing the mold filling studs after filling has been solved according to German publication specification No. 1 91o 7o9, where a spring-loaded non-return valve is arranged in the filling opening, which automatically closes when the filling device no longer forms pressure on the upper side of the valve plug. This arrangement, of course, requires that in each of the molds used there is a spring-loaded check valve for closing the filling opening.
Formålet med den foreliggende opfindelse er derfor,at angive et apparat af den ovenfor nævnte art, der sikrer en nem og hurtig til- og frakobling af beholderen til støbeformen.The object of the present invention is therefore to provide an apparatus of the kind mentioned above which ensures easy and quick connection and disconnection of the container to the mold.
Dette opnås ifølge opfindelsen ved, at beholderens drejelige aksel er indrettet til indgreb med en oven på formtappen anbragt låsemekanisme til fastlåsning af formtappen i formen, hvilken formtap på sin overside ligeledes har to parallelt løbende udadhældende flapper af bøjeligt materiale anbragt i lige stor afstand fra formtappens centrum og i det væsentlige med en udstrækning der udgør en korde til formtappens cirkelformede overside, hvilke flapper indgriber i en dertil indrettet trapezformet udfræsning i den over låsemekanismen anbragte kegleformede ventilprop og fastholdes udtageligt i ventilproppens udfræsning.This is achieved according to the invention in that the rotatable shaft of the container is arranged for engagement with a locking mechanism arranged on the molding pin for the molding, which molding on its upper side also has two parallel extending outwardly extending flaps of flexible material located at an equal distance from the molding pin. center and substantially to an extent constituting a chord for the circular upper face of the die, which flaps engages in a trapezoidal cutout arranged therein in the cone-shaped valve plug and is removably retained in the valve stopper.
Før beholderen med harpiksblandingen tilsluttes støbeformen, sættes dennes formtap aftagelig fast på ventilproppen, og efter endt ifyld- ning låses formtappen med et enkelt greb fast til støbeformen, så- 3 141927 ledes at påfyldningsstudsen er pålideligt lukket, og beholderen overføres til den næste støbeform.Before the resin mixture container is connected to the mold, its molding pin is removably fixed to the valve plug, and after filling is completed, the molding pin is secured to the mold with a single grip, so that the filling nozzle is reliably closed and the container is transferred to the next molding.
Herved opnås en nem og hurtig til- og frakobling af beholderen til støbeformene, hvilket giver en glidende arbejdsproces.This provides an easy and quick connection and disconnection of the container to the molds, which provides a smooth working process.
Ved den foreliggende ifyldningsindretning er man tillige sikker på, at beholderens udløbsåbning er lukket før flytningen, idet formtappen kun kan fastlåses til støbeformen, når beholderens ventilprop er lukket, hvilket sikrer mod spild af harpiksblandingen ved overføring af beholderen mellem de enkelte påfyldningsstudse.In the present filling device, it is also ensured that the outlet opening of the container is closed before moving, since the molding pin can only be locked to the mold when the container valve plug is closed, which ensures against wastage of the resin mixture by transferring the container between the individual filling nozzles.
Formtappens låsemekanisme består, ved en foretrukken udførelsesform for apparatet ifølge opfindelsen, at to, gennem akslens drejning, i forhold til hinanden, i modsat retning, forskydelige låseplader, som i udskudt tilstand kan indgribe under en, på den, med indløbet forsynede formdel fast anbragt ringformet skive.In a preferred embodiment of the device according to the invention, the locking mechanism of the molding pin comprises two, by means of rotation of the shaft, relative to each other, in opposite directions, displaceable locking plates which can in a deferred position engage firmly on the molded part provided with the inlet. annular disc.
Dette er en særlig simpel, men alligevel effektiv udførelsesform af låsemekanismen, der kan betjenes fra beholderens overdel.This is a particularly simple yet effective embodiment of the locking mechanism operable from the top of the container.
Ved, at i det mindste ventilproppen, beholderens underste del og/eller låsepladerne er beklædte med TEFLON®, opnår man en yderligere form for sikkerhed for, at de enkelte dele ikke i længden gror sammen, men fortsat kan adskilles og bevæges i forhold til hinanden.By means of at least the valve plug, the lower part of the container and / or the locking plates are covered with TEFLON®, an additional form of security is obtained that the individual parts do not grow together in length but can still be separated and moved relative to each other. .
Por at sikre en bedre tætning af beholderens udløbsåbning forsynes ventilproppen med en eller flere tætningsringe, af f.eks, TEFLON®, polyethen eller polypropen, hvilket på grund af disse materialers flexibilitet og smørende egenskaber sikrer en nem afløftning af beholderen fra formtappen.To ensure a better sealing of the container outlet opening, the valve plug is provided with one or more sealing rings, for example, TEFLON®, polyethylene or polypropylene, which, due to the flexibility and lubricating properties of these materials, ensures easy lifting of the container from the molding pin.
Por at lette tilslutningen af beholderen til støbeformen er støbeformen forsynet med styreorganer.To facilitate the connection of the container to the mold, the mold is provided with control means.
Apparatet ifølge opfindelsen skal i det følgende beskrives nærmere under henvisning til de vedføjede tegninger.The apparatus of the invention will now be described in more detail with reference to the accompanying drawings.
4 141927 På tegningen viser: fig. 1. en anskueliggørelse af apparatets anvendelse til fremstilling af en mindre båd, fig. 2, en beholder til blanding af harpiks og armeringsmateriale samt beholderens tilslutninger og ventilorganer, fig* 3* enkeltheder i den nedre del af beholderen ifølge fig. 2 samt det deri anbragte ventilsystem, fig. 4· en udførelsesform for en låseindretning eller låsemekanisme, som udgør en enkelthed i beholderens ventilsystem, fig. 5· et snit gennem en forside, nærmere bestemt et snit gennem en udsugningsåbning for formen, og fig. 6. ligeledes et snit gennem en forside, i dette tilfælde gennem en styrestift eller styretap.In the drawing: FIG. 1. an illustration of the use of the apparatus for the manufacture of a smaller boat; 2, a container for mixing resin and reinforcing material and the container connections and valve means; FIG. 3 * details of the lower portion of the container according to FIG. 2 and the valve system provided therein; FIG. 4 shows an embodiment of a locking device or locking mechanism which constitutes a simplicity in the valve system of the container; 5 shows a section through a front face, more specifically a section through a suction opening for the mold, and fig. 6. also a section through a front face, in this case through a guide pin or guide pin.
Apparatet omfatter i det væsentlige to enheder, nemlig en beholder, hvori en.blanding af harpiks og armeringsmateriale indføres, og gennem en ventilindretning, fortrinsvis i beholderens bunddel, udportio— neres gennem en åbning ind i den anden enhed, nemlig en delbar form.The apparatus comprises substantially two units, namely, a container into which a mixture of resin and reinforcing material is introduced, and is dispensed through a valve device, preferably in the bottom portion of the container, through an opening into the other unit, a divisible form.
1 fig. 1 vises den nævnte beholder 1 anbragt inden i en delbar form 26, hvis ene formdel indeholder en til tilslutning af beholderen beregnet åbning, idét beholderen kan fastlåses til formen ved hjælp af ikke viste holdeorganer. Disse kan imidlertid udformes på en hvilken-somhelst egnet måde, og er nødvendige for at modvirke det modtryk, der fremkommer ved indpresning af blandingen af harpiks og armeringsmateriale i formen »Den detaljerede udformning af beholderen 1 og dens forskellige organer skal nedenfor beskrives under henvisning til fig.1 FIG. 1, said container 1 is shown positioned within a divisible mold 26, one mold portion of which has an opening intended for connection of the container, since the container can be locked to the mold by means of holding means not shown. However, these can be designed in any suitable manner and are necessary to counteract the backpressure which results from the compression of the resin and reinforcing material mixture in the form "The detailed design of the container 1 and its various means will be described below with reference to FIG.
2 og 3. Helt almindeligt kan dog anføres, at den i beholderen indførte blanding af harpiks og armeringsmateriale sættes under tryk ved indførelse af trykluft fra et organ 24, og blandingen udpresses gennem en i beholderens kegleformede underdel anbragt ventil ind i formen. Blandingens indførelse i formen lettes ved en samtidig udsugning af formen gennem en udsugningsåbning 2o, idet udsugede gasser, væsentligst luft, indføres i et organ 23, hvori de i luften forekommende skadelige gasser kan absorberes eller på anden måde uskadeliggøres.2 and 3. However, it can generally be stated that the mixture of resin and reinforcing material introduced into the container is pressurized by introducing compressed air from a member 24 and the mixture is extruded through a valve arranged in the cone-shaped base of the container into the mold. The introduction of the mixture into the mold is facilitated by a simultaneous suction of the mold through a suction opening 20o, in which suction gases, essentially air, are introduced into a member 23 in which the harmful gases present in the air can be absorbed or otherwise rendered harmless.
Efter fuldstændig fyldning af formen borttages beholderen 1, idet påfyldningshullet forbliver lukket derved at en formtap, som skal 5 141927 beekrivee nærmere i det følgende, forbliver i formens åbning i låst tilstand» Bfter bland ingens hedning, hvilket som ovenfor anført fortrinsvis skar ved tilførsel af varme til formen, fortrinsvis gen» nes deri anbragte kanaler, hvorigennem varmt vand eller varm luft kan cirkulere, adskilles formen og den ftarAige genstand udtages af formen»After complete filling of the mold, the container 1 is removed, the filling hole being closed thereby leaving a molding pin, which is to be described in the following, in the opening of the mold in a locked state "After mixing the mixture, which, as indicated above, preferably cuts through application of the mold. heat to the mold, preferably ducted therein, through which hot water or hot air can circulate, the mold is separated and the solid object is removed from the mold »
Pig. 2 viser den foran ismite beholder 1, heis overdel 2 er forsynet med en tat lukkelig åbning 3, der fortrinsvis er gennemsigtig, så at man kan kontrollere at materialeniveanert 1 beholderen ikke er sunket for dybt. Åbningen 3 er desuden beregnet til indføring af blandingen af harpiks og armerlngsmateriale. På overdelen 2 er der en åbning 4 til tilslutning af trykluft, og en i forhold til beholderens kegleformede nedre del centralt anbragt drejelig aksel 5, som er tryktart lejret i overdelsn 2» Akslen 5 går gennem beholderen til dennes kegleformede faard, hvor dem. er 1 indgreb aed en låsemekanisme 6 til ftatZåaning af den. der anbragte formtap, hvilket skal forklares i enkeltheder i det følgende, lå beholderens overdel findes der desuden, i det mindste eet, am hemalgtnasslgt to organer til harvning og sankning af en i karrets kegleformede bunddel anbragt ven-tilprop. Bisse organer 11 kan hensigtessesigt udformen som hydraulik-cylindre.Pig. 2 shows the front ice cream container 1, elevator upper part 2 is provided with a tightly closed opening 3, which is preferably transparent, so that one can check that the material level 1 container is not sunk too deep. The orifice 3 is further intended to introduce the mixture of resin and reinforcing material. On the upper part 2 there is an opening 4 for connecting compressed air, and a centrally positioned rotatable shaft 5 which is pressurally mounted in the upper section 2 of the cone-shaped lower part. The shaft 5 passes through the cone to its cone-shaped vessel, where they. is 1 action with a locking mechanism 6 for locking it. moreover, there are, at least one, at least two means for harrowing and lowering a friend plug located in the cone-shaped bottom part of the vessel. Convenient means 11 can conveniently be configured as hydraulic cylinders.
I fig. 3 visse i enkeltheder konstruktionen af det kegleformede kars bunddel, narmere bestemt dettes ventl lirrekwnl was. I figuren vises beholderen 1 anbragt i lukket stilling på en foroftel 14. Ben anden formdel betegnes med 15, og rummet mellem disse danner formrummet.In FIG. 3 shows in some detail the construction of the bottom part of the cone-shaped vessel, more specifically its vent lirrekwnl wax. In the figure, the container 1 is shown in a closed position on a front part 14. The second mold part is denoted by 15, and the space between them forms the mold space.
Som det fremgår af fig. 3» er ventilproppen lo i tat kontakt med det kegleformede kars vagge. Yentilproppen lo kan haves og rankes ved hjalp af stanger eller rør 12, som igen påvirkes af manøvreorganerne i II i fig.· 2. Yentilproppen lo har en tvårs over sin underside gående udfrasning 22 som har et i udfræeningæss længderetning konstant tværsnit, der fremtræder som en ligebenet trapez med o pad vendt grundlinie. Betone udfrasning 22 muliggør anbringelse af en formtap 8 med ventil-proppens underside, passende i åbningen på formdelen. 14. På formtappens overside findes en låsemekanisme 6, som kan låses og åbnes ved drejning af akslen 5 eller på anden passende måde. låsemekanismens 6 vigtigste funktion er at muliggøre fastlåsning af formtappen i formdelen 14 på en sådan måde, at formtappen fastholdes under en på formdelen 14 anbragt hensigtsmæssigt ringformet skive 28. Formtappen 8 fastholdes mod ventilproppen lo ved hjælp af to parallelt løbende udadhældende flapper af bøjeligt materiale anbragt i lige stor afstand fra formtappens centrum og i det væsentlige med en udstrækning 6 141927 der udgør en korde til formtappens cirkelformede overside. Disse bøjelige flapper muliggør borttagelse af beholderen 1 fra formen efter fastlåsning af formtappen rinder skiven 28, hvorefter beholderen 1 kan overføres til en anden form til fyldning af denne, medens indholdet i den fyldte form bringes til at hærde og udtages af denne form. Enhver form har således sin formtap, der kan indføres i ud-fræsningen 22 i ventilproppen ved indskydning fra siden, hvorefter akslen 15, som styrer låseanordningen 6, kan nedføres mod denne.As shown in FIG. 3, the valve plug is in close contact with the cradle of the cone-shaped vessel. The yoke plug 1o can be held and raised by means of rods or tubes 12, which in turn are actuated by the maneuvering means of II in Fig. 2. The yentile plug 1o has a two-yearly protruding bevel 22 which has a longitudinal cross-section constant in the milling direction, which appears as a straight-legged trapezoid with o pad facing baseline. Concrete casing 22 allows for the insertion of a mold pin 8 with the underside of the valve plug, suitably in the opening of the mold member. 14. On the upper side of the molding pin is a locking mechanism 6 which can be locked and opened by turning the shaft 5 or in any other suitable manner. the most important function of the locking mechanism 6 is to enable locking of the molding pin in the molding member 14 in such a way that the molding pin is secured under a suitably annular disc 28. The molding pin 8 is held against the valve plug lo by two parallel extending outwardly extending flaps of flexible material arranged at an equal distance from the center of the die and substantially to an extent 6 forming a chord to the circular upper face of the die. These flexible flaps allow removal of the container 1 from the mold after locking the die pin rinses the disc 28, after which the container 1 can be transferred to another mold for filling it, while the contents of the filled mold are cured and removed from this mold. Thus, any shape has its shape pin which can be inserted into the cut-out 22 in the valve plug by lateral insertion, after which the shaft 15 which controls the locking device 6 can be brought down towards it.
Som det fremgår af fig. 5 er det hensigtsmæssigt at lette korrekt placering af beholderen 1 ved at anbringe styreorganer 27 rundt om indføringshullet på formdelen 14, enten i form af en ringformet enkelthed eller i form af i det mindste tre støtteklodser.As shown in FIG. 5, it is convenient to facilitate the correct placement of the container 1 by placing guide means 27 around the insertion hole on the mold member 14, either in the form of an annular simplicity or in the form of at least three support blocks.
I fig. 4 er vist en udførelsesform for låsemekanismen 6 i fig. 3» bestående af to plader, som ligger op til hinanden, og som er forsynede med udsparinger til indføring af en hensigtsmæssigt kvadratisk del af akslen 5, således at man ved drejning af akslen 5 kan bringe pladerne 7a og 7b til at trækkes ind over formtappens kant, så at beholderen 1 kan indføres i formåbningen, samt låse formtappen til formen efter afsluttet fyldning. Det er indlysende, at også andre udførelsesformer for låsemekanismen er mulige.In FIG. 4 shows an embodiment of the locking mechanism 6 in FIG. 3 'consisting of two plates which are adjacent to each other and provided with recesses for inserting a suitable square part of the shaft 5, so that when turning the shaft 5, the plates 7a and 7b can be pulled over the edge so that the container 1 can be inserted into the mold opening as well as lock the mold pin to the mold after filling is completed. It is obvious that other embodiments of the locking mechanism are also possible.
I fig. 5 er vist et snit gennem kanten af den i fig. 1 viste form med de to formdele 14 og 15, samt det derimellem fremkomne formrum. De to formdeles 14 og 15 sammenføjning udgøres af en afstandsliste 17, der anbragt i· en langs kanten på den ene formdel 15 forløbende rende 16. Denne afstandliste 17 er fortrinsvis udført af TEFIOE og • dennes mod den anden formdel 14 anliggende flade er forsynet med tværgående spor med så lille dimension, at passage af harpiksblanding forhindres, medens luft kan passere. Disse spor har sædvanligvis dimensioner mellem o.o5 - o,3 mm, og er hensigtsmæssigt anbragte i en afstand af ca. 1 - 3 cm med en bredde på omtrent 8 - 2o mm for afstandslisten, luft kan således passere mellem afstandslisten 17 og formdelen 14, medens harpiksblandingen standses på grund af dets større strømningsmodstand.In FIG. 5 is a section through the edge of the one shown in FIG. 1 with the two mold parts 14 and 15, as well as the mold space formed therebetween. The joints of the two mold members 14 and 15 are formed by a spacer strip 17 arranged in a gutter 16 extending along the edge of one of the mold parts 15. transverse grooves with such a small dimension that the passage of resin mixture is prevented while air can pass. These grooves usually have dimensions between about 0.5 mm and 3 mm, and are conveniently spaced at a distance of approx. 1 - 3 cm with a width of about 8 - 2 mm for the spacer strip, air can thus pass between the spacer strip 17 and the molding part 14, while the resin mixture is stopped due to its greater flow resistance.
På formdelens 14 og 15 ydre kant er imellem disse anbragt en tætningsliste 18, som er flexibel, men som på sin inderside er forsynet med en luftgennemtrængelig hinde. Mellem tætningslisten 18 og afstandslisten 17 er der udformet en udsugningsåbning 2o, så at formens indhold kan sættes under partielt vacuum, for at lette den fuldstændige fyldning af formrummet med blandingen af harpiks og armeringsmateriale. På grund af at evakueringsrummet mellem afstandslisten 17 og tætnings- 141927 7 listen 18 løber hele vejen rtmdt oa foraikanten, er der tam behov for en udeugningsåbning.Between the outer edge of the molding part 14 and 15 there is arranged a sealing strip 18 which is flexible, but which has an air-permeable membrane on its inside. Between the sealing strip 18 and the spacer strip 17, a suction opening 20 is provided so that the contents of the mold can be put under partial vacuum to facilitate the complete filling of the mold space with the mixture of resin and reinforcing material. Due to the fact that the evacuation space between the spacer 17 and the sealing strip 18 runs all the way to the front edge, there is a need for an outlet opening.
I fig. 6 er vist et snit lignende det i fig. 5, men i dette tilfælde gennem en af et antal langs fonnkanten anbragte styretappe 21, som sikrer, at formdelene 14 og 15 indtager korrekt stilling i forhold til hinanden. Formdelene 14 og 15 holdes sammen aod hinanden ved hjælp af ikke i tegningen viste kleamekramper eller lignende organer. Eventuelt kan styretappene 21 være genneagående og udføres som bolte, og de nævnte klemaekramper kan da undværes.In FIG. 6 is a sectional view similar to that of FIG. 5, but in this case through one of a plurality of guide pins 21 disposed along the rim, which ensure that the mold members 14 and 15 assume the correct position relative to each other. The mold members 14 and 15 are held together by means of clamping cramps or similar means not shown in the drawing. Optionally, the guide pins 21 can be continuous and made as bolts, and the said clamping cramps can then be avoided.
San foretrækker at behandle samtlige dele som kan komme i berøring med harpiksblandingen med et materiale, hvortil hærdet harpiks ikke klæber fast. Et sådant materiale er TEFLON ® men også andre materialer kan komme på tale, f.eks. polyeten og polypropen.San prefers to treat all parts that may come into contact with the resin mixture with a material to which hardened resin does not adhere. Such a material is TEFLON ® but other materials may also be mentioned, for example. polyethylene and polypropylene.
Det skal anføres, at den foran beskrevne udførelsesform med anvendelse af tvangsfødning af harpiksblandingen ved anvendelse af trykluft udgør den foretrukne udf ørelse af orm, men at det også er muligt at opnå et ensartet resultat ved at indføre blandingen i formen gennem ventilmekanismen ved hjælp af en mekanisk indretning, f. eke. en forsyningsskrue eller en stempelpumpe. Anvendelse af sådanne mekaniske organer har imidlertid en tilbøjelighed til at komplicere indretningen og til at vanskeliggøre dens rengørelse.It should be noted that the above-described embodiment using forced feeding of the resin mixture using compressed air is the preferred embodiment of worm, but that it is also possible to achieve a uniform result by introducing the mixture into the mold through the valve mechanism. mechanical device, f. eke. a supply screw or a plunger pump. However, the use of such mechanical means tends to complicate the device and make its cleaning more difficult.
Indretningen ifølge opfindelsen er foran beskrevet i tilslutning til en form bestående at to dele 14 og 15. Det er imidlertid klart, at formen kan være inddelt i tre eller endnu flere dele. Til fremstilling af hullegemer kræves der således en central formdel, som er omsluttet af mindst to andre formdele, idet de to sidstnævnte formdele er i kontakt med hinanden på foran beskrevne måde.The device according to the invention is described above in connection with a mold consisting of two parts 14 and 15. However, it is clear that the mold can be divided into three or even more parts. Thus, for the manufacture of hollow bodies, a central mold part is enclosed by at least two other mold parts, the latter two mold parts being in contact with each other in the manner described above.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7405029 | 1974-04-16 | ||
SE7405029A SE7405029L (en) | 1974-04-16 | 1974-04-16 | NEMO METHOD, METHOD FOR ENVIRONMENTALLY FRIENDLY MACHINE MANUFACTURE OF LARGE APPLICATIONS IN REINFORCED HERD PLASTIC S.K. AP. |
SE7415278A SE411110B (en) | 1974-12-05 | 1974-12-05 | DEVICE FOR THE MANUFACTURE OF REINFORCED PLASTIC FOREMALS |
SE7415278 | 1974-12-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK160875A DK160875A (en) | 1975-10-17 |
DK141927B true DK141927B (en) | 1980-07-21 |
DK141927C DK141927C (en) | 1980-12-01 |
Family
ID=26656477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK160875AA DK141927B (en) | 1974-04-16 | 1975-04-15 | Apparatus for the production of fiber-reinforced plastic articles with a container for filling molds. |
Country Status (4)
Country | Link |
---|---|
DK (1) | DK141927B (en) |
FI (1) | FI751119A (en) |
GB (1) | GB1500535A (en) |
NO (1) | NO145154C (en) |
-
1975
- 1975-04-14 GB GB15297/75A patent/GB1500535A/en not_active Expired
- 1975-04-15 FI FI751119A patent/FI751119A/fi not_active Application Discontinuation
- 1975-04-15 NO NO751322A patent/NO145154C/en unknown
- 1975-04-15 DK DK160875AA patent/DK141927B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO145154B (en) | 1981-10-19 |
NO145154C (en) | 1982-01-27 |
FI751119A (en) | 1975-10-17 |
DK160875A (en) | 1975-10-17 |
GB1500535A (en) | 1978-02-08 |
NO751322L (en) | 1975-10-17 |
DK141927C (en) | 1980-12-01 |
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