NO137436B - PLASTIC TANK. - Google Patents

PLASTIC TANK. Download PDF

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Publication number
NO137436B
NO137436B NO753678A NO753678A NO137436B NO 137436 B NO137436 B NO 137436B NO 753678 A NO753678 A NO 753678A NO 753678 A NO753678 A NO 753678A NO 137436 B NO137436 B NO 137436B
Authority
NO
Norway
Prior art keywords
tank
recesses
impact
tanks
depressions
Prior art date
Application number
NO753678A
Other languages
Norwegian (no)
Other versions
NO137436C (en
NO753678L (en
Inventor
Heinrich Ostermeier
Klaus Peter Gulsch
Original Assignee
Streuber Sulo Eisenwerk F
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.)
Filing date
Publication date
Priority claimed from DE19742452249 external-priority patent/DE2452249B2/en
Application filed by Streuber Sulo Eisenwerk F filed Critical Streuber Sulo Eisenwerk F
Publication of NO753678L publication Critical patent/NO753678L/no
Publication of NO137436B publication Critical patent/NO137436B/en
Publication of NO137436C publication Critical patent/NO137436C/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/10—Large containers rigid parallelepipedic
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/328—Leaving the burrs unchanged for providing particular properties to the joint, e.g. as decorative effect
    • B29C66/3282—Leaving the burrs unchanged for providing particular properties to the joint, e.g. as decorative effect for reinforcing the joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C49/4812—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity and welding opposite wall parts of the parisons or preforms to each other
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/022—Particular heating or welding methods not otherwise provided for
    • B29C65/028—Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/549—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles said hollow-preforms being interconnected during their moulding process, e.g. by a hinge
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Details Of Fluid Heaters (AREA)

Description

Oppfinnelsen angår en plasttank med firkantede eller hvelvede inntil ovalformede sider, hvilken tank er blåst av termoplastisk materiale og er av størrelsesorden som fyringsoljetanker/ og i hvilken det i de overfor hverandre beliggende sidevegger er anordnet sammenhørende inntrekkinger som støter mot hverandre i. midten av tanken og ved biåseforløpet er væsketett sammensveiset på støtflaten. The invention relates to a plastic tank with square or domed to oval-shaped sides, which tank is blown from thermoplastic material and is of the order of magnitude of fuel oil tanks/ and in which cohesive recesses are arranged in the opposite side walls which abut against each other in the middle of the tank and in the case of the bypass, liquid-tight is welded together on the impact surface.

Sådanne tanker benyttes som enkelttanker eller i flertall som bat.teritank for lagring av fyringsolje. Forbindelsen av enkelttankene til et batteri og avstivningen av enkelttankene skjer utelukkende, via tilkoplingsledningene og ikke, slik som ved andre kjente tanker, ved hjelp av båndomviklinger og mellomstykker. Such tanks are used as single tanks or in the majority as battery tanks for storing heating oil. The connection of the individual tanks to a battery and the stiffening of the individual tanks takes place exclusively via the connection lines and not, as with other known tanks, by means of tape wraps and spacers.

Sådanne fyrings.oljetanker, som er kjent fra DT-QS 2. 115 507, blir fremstilt, ved et ekstrusjons-blåseforløp. Et slangeformet råemne i plastisk tilstand, blir da anbrakt mellom to formhalvdeler, sammenklemt oventil og nedentil og oppblåst ved hjelp av trykkluft,, hvorved slangen inntar blåseformens veggkontur. Fremspring, i formhulrommet blir. omgitt av slangens vegger, idet. hvert materiale må strekke seg. På. disse steder blir den ellexs ensartede veggtykkelse av slangen forringet. Such fuel oil tanks, which are known from DT-QS 2.115 507, are produced by an extrusion blow process. A hose-shaped blank in a plastic state is then placed between two mold halves, clamped together above and below and inflated using compressed air, whereby the hose takes on the wall contour of the blow mould. Protrusion, in the mold cavity becomes. surrounded by the walls of the serpent, the every material must stretch. On. in these places, the ellex's uniform wall thickness of the hose is degraded.

Bortsett fra det kjente strekkingsforhold, som ved blåseforming registreres mellom slangeoverflaten og overflaten av formhulrommet, må det også tas hensyn til forholdet mellom veggtykkelse og høyde av det eventuelle fremspring i formhulrommet hhv. dybden av inntrekkingen i beholderen. Ved fyringsoljetanker av ovennevnte art med et rominnhold på 1000 til 2000 liter, som i praksis har en gjennomsnittlig veggtykkelse på 6 mm og. en bredde på 720 mm, fremkommer det som størrelse av forholdet veggtykkelse til dybde i området for inntrekkingene et forhold på 1 : 60, Apart from the known stretching ratio, which during blow molding is recorded between the hose surface and the surface of the mold cavity, account must also be taken of the relationship between wall thickness and height of any protrusion in the mold cavity or the depth of the indentation in the container. In the case of fuel oil tanks of the above type with a volume of 1000 to 2000 litres, which in practice have an average wall thickness of 6 mm and. a width of 720 mm, a ratio of 1 : 60 appears as the size of the ratio of wall thickness to depth in the area of the recesses,

da dybden av hver inntrekking i sideveggen beløper seg til ca. as the depth of each recess in the side wall amounts to approx.

360 mm. En sådan høy inntrekkingsdybde medfører problemer, sær-lig i forbindelse med veggtykkelsen ved spissen av inntrekkingen og også i forbindelse med bruddfastheten av sveisen på støt- eller sammenføyningsstedet. 360 mm. Such a high indentation depth causes problems, particularly in connection with the wall thickness at the tip of the indentation and also in connection with the fracture strength of the weld at the point of impact or joining.

Selvsagt kan det ved tilsvarende veggtykkelsesregule-ring ved utstøtning av slangen oppnås et gunstigere forhold, men med denne foranstaltning blir imidlertid materialandelen og dermed prisen på'en beholder'vesentlig øket. Allerede av denne grunn er det nødvendig å fremstille tanken med så tynne vegger som mulig, dvs. i grenseområdene for de nødvendige veggtykkelser. Of course, a more favorable ratio can be achieved by corresponding wall thickness regulation when ejecting the hose, but with this measure, however, the material proportion and thus the price of a container is substantially increased. Already for this reason, it is necessary to produce the tank with as thin walls as possible, i.e. in the border areas for the required wall thicknesses.

Alle tanker eller beholdere av termoplastisk materiale oppviser en viss elstisitet, hvilket fører til at tanksideveggene ved fylling alt etter veggtykkelse og fyllingsgrad buler mer eller mindre ut. Videre ville de konvensjonelle tanker ikke tåle de opp-tredende belastninger, og blir derfor forsynt med båndomviklinger som i vidtgående grad hindrer utbulingen eller fordeler denne like-artet på tankveggen. På grunn av disse båndomviklinger blir dermed "også samtidig innbyggingsmålene for et tankbatteri gitt på forhånd. All tanks or containers made of thermoplastic material exhibit a certain elasticity, which causes the tank side walls to bulge more or less when filled, depending on wall thickness and degree of filling. Furthermore, the conventional tanks would not be able to withstand the occurring loads, and are therefore provided with belt wraps which largely prevent the bulging or distribute it evenly on the tank wall. Due to these tape windings, the installation dimensions for a tank battery are therefore also given in advance.

Formålet med oppfinnelsen er således å utvikle de The purpose of the invention is thus to develop them

kjente, båndløse tanker på en slik måte at tankens stabilitet mot trykkbelastning på grunn av den i den båndløse tank fylte væske økes, og at også utbulingen av tanken med henblikk på dennes stabilitet reduseres til et minimum eller skjer på ensartet måte. known bandless tanks in such a way that the tank's stability against pressure loading due to the liquid filled in the bandless tank is increased, and that the bulging of the tank with a view to its stability is also reduced to a minimum or occurs uniformly.

Ovennevnte formål oppnås ved en tank av den innled-ningsvis angitte type som ifølge oppfinnelsen er kjennetegnet ved at det i minst én av støtflåtene ved sveisingen av støtstedet er innpresset en omløpende fordypning eller flere fordypninger som strekker seg over delområder av omkretsen, og som rager utover like til i nærheten av støtranden. The above-mentioned purpose is achieved by a tank of the type indicated at the outset which, according to the invention, is characterized by the fact that in at least one of the shock rafts, when the impact point is welded, a circumferential depression or several depressions which extend over sub-areas of the circumference, and which project outwards, are pressed into close to the impact edge.

Når fordypningen eller fordypningene innpresses ved sveising av støt- eller sammenføyningsstedet, hvilket skjer samtidig med blåseforløpet, flyter en tilsvarende materialmengde radialt utover og deretter inn i de lengst inne beliggende områder av inntrekkingenes vegger. Ved hjelp av anbringelsen av fordypningen eller fordypningene oppnås dermed en forsterkning av sveisingen og også av de ved siden av sveisingen beliggende områder av inntrekkingenes vegger. Denne materialfortrengning oppnås ved :>;. :<\ :' Jn:> 3;^- y^ i : :.:'.-nson i >;;ioxvn.: r .'i- i> ^vj .r.. When the recess or recesses are pressed in by welding the butt or joining point, which occurs at the same time as the blowing process, a corresponding amount of material flows radially outwards and then into the innermost areas of the walls of the recesses. With the aid of the placement of the recess or recesses, a strengthening of the weld and also of the areas adjacent to the weld of the walls of the recesses is thus achieved. This material displacement is achieved by :>;. :<\ :' Jn:> 3;^- y^ i : :.:'.-nson i >;;ioxvn.: r .'i- i> ^vj .r..

at støt-,eller sammenføyningsstedet i nærheten av støtranden ved •••..r •• a .. :; •/ .- ..v i ,i3:;;;a" vc v.iM,i<r.. " jAc; sammensveisingen blir sterkere sammenpresset enn på de øvrige deler av støtoverflaten. that the impact or joining point near the impact edge at •••..r •• a .. :; •/ .- ..v i ,i3:;;;a" vc v.iM,i<r.. " jAc; the weld is compressed more strongly than on the other parts of the impact surface.

. 0 :: <j :? a ,--•:! i n \- c'i cx a -Ji,jt: . 0 :: <j :? a ,--•:! i n \- c'i cx a -Ji,jt:

Den virkning som oppnås ved denne utførelse av tanken "ifølge' b'p'p'f innei'sén,; karr forbedres ytterligere ved at veggtykkelsen'1 på støtste:détJ er^mindre^ enn'' summen1 av-'veggtykkélsené"-åv°de to l'nnt~rekk<c>ihgér ;f ør'' disses1' 'sammensveisihg-.'Ved'; denf; besk ire vrie ekstruns"j!6h's^bi'ås:eteknikk sådån1 Véggtykkélsésdlmehs'-jonering oppTiådd ved at" dé- tilsvarende0, - k3e%lestumpf6rméaé-'<;>fr'érnsprihgc form-hulromme^t^veti^^iukkét<1> f orm'hår' :eriy • tilsvarende avstand-; médv s-irie-: f ront-f latér."'''' Når denne<1->avstand veiges:; slikkatr- d'eh': ønskede-1 veggtykkelse 'fremkommer / blir 1-ik'elédes' ekstra-1 materiale'på støtstédet-' trykket radialt '.utover" og- tjener-til ytt'erligeré;';f o'rstérknlhg>ra v "støtranden eller inntrekkingenes vegger. "-'v-'-"-'-- "3i ■ ~ --^'* !.!^;„;.v3 / -• r r. -Fordypningene ^e;r, ..fortrinnsvis utformet: med segment-'form, idet ;steg- blir værende «igjen mellom-dej segmentformedepifordypninger •>>- Ved-•.■hjelp, .-.•av^denne- anordning ,ay..fordypningene kan det ;mate.riale ,s.om .^v,ed r s-ammens ve i %i ngen .ligger, radialt- innenf or .fordypningene og likeledes;.^stå-r-.under, forhøyet trykk, srtrømme...radialt utover "mellom ..delene-av-f ormf-remspringene jSom f reinb.ringer...fordyp-,ningene .-•-.'•■.■ .....■• ;. • .. , • .......'.,- .. •- <<> r The effect achieved by this design of the tank "according to the interior of the vessel is further improved by the fact that the wall thickness of the butt is less than the sum of the wall thicknesses"- åv°de two l'nnt~rekk<c>ihgér ;f ør'' disses1' 'sammesveisihg-.'Ved'; thef; besk ire vrie extrusion"j!6h's^bi'ås:etechnique such1 Wall thickness lsésdlmehs'-ioning upTiåd by" dé- corresponding0, - k3e%lestumpf6rméaé-'<;>fr'érnsprihgc form-cavity^t^veti^^iukkét< 1> f orm'hair' :eriy • corresponding distance-; médv s-irie-: f ront-f later."'''' When this <1->distance is weighed:; likkatr- d'eh': desired-1 wall thickness 'appears / becomes 1-ik'elédes' extra- 1 material'at the point of impact-'pressed radially '.outwards" and- serves-for ytt'erligeré;';f o'rstérknlhg>ra v "the abutting edge or the walls of the recesses. "-'v-'-"-'-- " 3i ■ ~ --^'* !.!^;„;.v3 / -• r r. -The recesses ^e;r, ..preferably designed: with segment-'shape, as the ;step- remains "again between -dej segment-shaped pi depressions •>>- With-•.■help, .-.•of^this- device,ay..the depressions, the ;mate.rial,s.om .^v,ed r s-ammens ve i % in no .lying, radially- within the .recesses and likewise;.^stand-r-.under, elevated pressure, srflow...radially outward "between ..the parts-of-the-f ormf-the-springs jAs f reinb.rings. ..the recesses .-•-.'•■.■ .....■• ;. • .. , • .......'.,- .. •- <<> r

; r ;:-vr :.-r- -For iden / ønskede, .material f ortrengning., f r,a .støtstédet tile inntrekkingenes, -v egger- -er..det r:yi.dere -fordelaktig, at fordypningene .-på .begge . støtoverf later-/er speilsymme.trisk ..anordnet.. ; r ;:-vr :.-r- -For the / desired, .material for displacement., f r,a .support for the indentations, -v eggs- -is..it r:yi.dere -advantageous, that the recesses . -on .both . impact surface is/are mirror-sym.trisk ..arranged..

~' ^ 1 ' OppifinriéIsen 'ska'l ':béskrives riæmere-i "det'"følgende "ved h jeip åv et antall :u'tf øreIseseksempler - under-;'h'énvis'ri'i?ng' "til tégningéhe , der 'fig.^ 1 "viser- ét loddrett snitt-gj;'énnom eh'^første utførelsesform av tanken if ølgé : oppf ihnél;sén/i,fl'g- 2- viser-et,; del-riss^settuoyenf ra-.av-, støt-..-el le r -sammenf øyningsstedet i tanken på fig.^il;,! f lg.: : ^.viser^-et snitt.;g jennom .sammen f. øyningsstedet .etter lin jen,111.^- II-I2påf f ig .j;2,--,f ig...,4 ..yiser .etloddrett snitt gjennom ~' ^ 1 ' OppifinriéIsen 'shall ':béwritten riæmere-in "the'"following "by h jeip åv a number :u'tf øreIseexamples - under-;''envis'ri'i?ng' "to tégningéhe , where 'fig.^ 1 "shows- a vertical section-gj;'énnom eh'^first embodiment of the tank if ølgé : oppf ihnél;sén/i,fl'g- 2- viser-et,; partial-riss ^settuoyenf ra-.of-, shock-..-el le r -the joining point in the tank in fig. .after lin jen,111.^- II-I2påf f ig .j;2,--,f ig...,4 ..yiser .a vertical section through

.enri.b.åndomyiklingsfri tank-ifølge en^andre ,utførelsesform, _.fig. 5 ; viser.-., eti sider is s^ay; .tanken ifølge- fig...- 4 ..fig.. 6, viser - et.side-. riss av enj; likne.n.de;)jat.førelsesform;- av.,tanken som, på. fig.. 5, med .enri.b.recirculation-free tank-according to an^other ,embodiment, _.fig. 5; shows.-., eti sides is s^ay; .the tank according to- fig...- 4 ..fig.. 6, shows - a.side-. sketch of enj; likne.n.de;)jat.form of execution;- of.,the thought that, on. fig.. 5, with

■en yt.ter:-liger.e.-.:de.t'al-ji,ay0t.anken.,r og .f.ig.. ,7.„ viser _et ..delsnitt. etter linjen A* - • -B.,;på i-f.ig.<?,-; i- T. cc .(-;■ n <^ . ^ ■ > An external view shows a section. following the line A* - • -B.,;on i-f.ig.<?,-; i- T. cc .(-;■ n <^ . ^ ■ >

på-: fi'g'.;-T;<->l:<-->er<i*> vist1 e'n! tank'- 2Plfølge oppfinnelsen imed on-: fi'g'.;-T;<->l:<-->er<i*> shown1 e'n! tank'- 2Plfollow the invention with

inntrekkinger 4, 4'. Inntrekkingenes sidévegger har en stigning på 28°. I midten av tanken støter inntrekkingene 4, 4' mot hverandre, idet det under blåseforløpet er blitt utført én sveising på støt- eller sammenføyningsstedet 6. indents 4, 4'. The side walls of the recesses have a pitch of 28°. In the middle of the tank, the recesses 4, 4' butt against each other, since during the blowing process one weld has been carried out at the point of impact or joining 6.

Støtstédet 6,er på fig. 2 vist i planriss. I støt-overflåtene 8, 8' er innpresset speilsymmetrisk segmentformede fordypninger 10, 10', slik at det mellom to.og to fordypninger .10, 10'er dannet gjenværende steg 12, 12'. Fordypningene 10 ligger i nærheten av støtranden som er representert ved den strektegnede linje 14 som markerer midten av krumningen R (fig. 3). .1 en forenklet utførelsesform kunne fordypningene 10, 10' være er-stattet av en omløpende ringformet fordypning. På fig. 2 er også vist en boring 16 og en fra støtoverflaten til boringen skrått forløpende sidevegg 18. The support 6 is in fig. 2 shown in plan view. Mirror-symmetric segment-shaped depressions 10, 10' are pressed into the impact surfaces 8, 8', so that remaining steps 12, 12' are formed between two depressions 10, 10'. The depressions 10 are located near the impact edge which is represented by the dashed line 14 which marks the middle of the curvature R (fig. 3). .1 a simplified embodiment, the recesses 10, 10' could be replaced by a circumferential ring-shaped recess. In fig. 2 also shows a bore 16 and a side wall 18 extending obliquely from the impact surface to the bore.

Fig. 3 viser et snitt gjennom støt- eller sammenføyningsstedet etter linjen III - III på fig. 2. Ved hjelp av piler F er antydet hvordan materialet ved fremstillingen av sveisingen Fig. 3 shows a section through the place of impact or joining along the line III - III in fig. 2. By means of arrows F, it is indicated how the material in the production of the welding

i løpet av blåseforløpet flyter ut fra den innerst liggende del av støtstédet -til støtranden hhv. inni inntrekkingenes 4, 4' vegger. For oppnåelse av stor bruddfasthet i sveisen, ligger radien R mellom 3 og 7 mm. Når radién velges større, er det øket fare for at sammenføyningsstedet, som antydet av de strektegnede linjer 20, bare blir utilstrekkelig sammensveiset og sprekker ved utløpet 20' av et sådant avsnitt, slik det er fremstilt ved den strektegnede linje 22. Når radien R velges for liten, er det likeledes fare for sprekkdannelse og da ved halsen 22 av støt- eller sammen-føyningsstedet som da ligger tilnærmet i skjæringspunktet mellom de to strektegnede linjer 26, 26 1 * during the blowing process flows out from the innermost part of the impact site - to the impact edge or inside the 4, 4' walls of the recesses. To achieve high fracture toughness in the weld, the radius R is between 3 and 7 mm. When the radius is chosen larger, there is an increased risk that the joint, as indicated by the dashed lines 20, will only be insufficiently welded together and crack at the outlet 20' of such a section, as shown by the dashed line 22. When the radius R is chosen too small, there is also a risk of cracking and then at the neck 22 of the impact or joining point which then lies approximately at the intersection between the two dashed lines 26, 26 1 *

På fig. 4 og 5 er vist en ytterligere utførelses-form av den båndomviklingsfrie tank 30 ifølge oppfinnelsen. Like-. som den foran beskrevne tank er tanken 30 forsynt med inntrekkinger 32, 32' hvis sentrum 34- i forhold til den egentlige tankmidt-linje 35 ligger forskjøvet nedover en avstand a. Inntrekkingene 32, 32' har ved sin basis, dvs. på tanksideveggene 36, en rektan-gulær grunnform 37 som løper ut kjeglestumnformet' i retning mot tankens indre* Inntrekkingene er også her forbundet med hverandre ved en sveising 38. Av fig. 4 fremgår at inntrekkingene 32, 32' er utført speilsymmetrisk fra tanksideveggene 36. Ved forskyvningen av inntrekkingene 32, 32' med avstanden a.under tankmidtlinjen 35, dannes et nedre romområde 39 .som.ligger under sammensveisingen 38, og et øvre, forstørret romområde 40 hvis side-flater er større enn sideflatene .av,det nedre romområde 39. og. som ligger over sammensveisingen. 38...Avstanden a .(fig.. 5) velges,-slik at utbulingen av tanken 30 i det nedre romområde 39 er tilnærmet like stor som utbulingen i det øyre romområde 40. Avstanden a kan bestemmes under hensyntagen til. det hydrostatiske trykk i tanken. Den. på fig. \5 viste, avstand beløper seg til. ca.. 1/10 av ;den; totale høyde av-tanken.; 30. In fig. 4 and 5 show a further embodiment of the belt-wrap-free tank 30 according to the invention. Like-. like the tank described above, the tank 30 is provided with recesses 32, 32' whose center 34 - in relation to the actual tank center line 35 - is offset downwards by a distance a. The recesses 32, 32' have at their base, i.e. on the tank side walls 36 , a rectangular basic shape 37 which runs out in the form of a frustum of a cone in the direction towards the interior of the tank* The recesses are also here connected to each other by a weld 38. From fig. 4 shows that the recesses 32, 32' are made mirror-symmetrical from the tank side walls 36. When the recesses 32, 32' are displaced by the distance a below the tank center line 35, a lower space area 39 is formed, which lies below the welding 38, and an upper, enlarged space area 40 whose side surfaces are larger than the side surfaces of the lower space area 39. and. which lies above the weld. 38...The distance a .(fig.. 5) is chosen so that the bulge of the tank 30 in the lower room area 39 is approximately as large as the bulge in the right room area 40. The distance a can be determined taking into account the hydrostatic pressure in the tank. It. on fig. \5 shown, distance amounts to. approx.. 1/10 of ;the; total height of the tank.; 30.

; Selv .,om. det på- figurene er vist. bare. én. inntrekk-ing fra begge sider av tanken, hvorved inntrekkingere er enten runde eller, kvadratiske, ved..sin, basis , kan formgivningen .av inntrékkingen på;tanksideflåtene-tilpasses til tanksidenes størrelsesforhold. Ved lengre tankfprmer-,.kan..det.-anbringes enten avlange, inntrekkinger eller to. eller, flere inntrekkinger- med ..små dimensjoner, for ikke å- miste-fpr mye rominnhold av tanken. ; Although. that on- the figures are shown. just. one. retracting from both sides of the tank, whereby retractors are either round or square at their base, the design of the retracting on the tank side rafts can be adapted to the size ratio of the tank sides. In the case of longer tank frames, either oblong, recesses or two can be placed. or, several retractions - with ..small dimensions, so as not to - lose - fpr a lot of room content of the tank.

På fig. 6 er vist en omviklingsfri tank 50 som er liknende utformet.,som tanken 30. på fig. 5. På sideveggen 52 av tanken 50 er. det. i ..det- nedre område anordnet. låseelementer 53 :som ved utførelsen ifølge fig. 6 og 7.er utformet som knaster eller forhøyninger . 54 .-.hhv. -som fordypninger 55. Låseelementene. 53 blir In fig. 6 shows a wrap-free tank 50 which is designed similarly to the tank 30 in fig. 5. On the side wall 52 of the tank 50 is. the. in ..the- lower area arranged. locking elements 53: as in the embodiment according to fig. 6 and 7 are designed as knobs or elevations. 54 .-.respectively -as recesses 55. The locking elements. 53 will be

.under-.blåsefprmingen av tanken dannet i ett stykke på tanken og blir d-imens.jonsmessi<g> . avstemt slik at når to tanker, som-er dreid 180° i forhold til hverandre, anbringes over hverandre, griper . låseelementene inn i-hverandre. Dette-gir ved transport .av tanken .50 en sikring mot glidning. Når tankene oppstilles, som batteri-rtanker, står derimot.en knast 54 på den. ene tank mot. en knast 54 på den-ved -siden oppstilte tank, slik at det tvangsmessig .over-- holdes en-.på-forhånd -gitt avstand ved hjelp av hvilken, det kan tas hensyn til utbulingen av tanksideveggene. .under-.blowing the tank formed in one piece on the tank and becomes d-imens.jonsmessi<g> . tuned so that when two tanks, which are rotated 180° in relation to each other, are placed above each other, grip . the locking elements into each other. When transporting the tank, this provides .50 protection against slipping. However, when the tanks are lined up, like battery tanks, there is a knob 54 on it. one tank against. a knob 54 on the side of the tank, so that a pre-given distance is forcibly maintained above, with the help of which the bulging of the tank side walls can be taken into account.

Claims (4)

1. Plasttank med firkantede eller hvelvede inntil ovalformede sider, hvilken tank er blåst av termoplastisk materiale og er av størrelsesorden som fyringsoljetanker, og i hvilken det i de overfor hverandre liggende sidevegger er anordnet sammenhørende inntrekkinger som støter mot hverandre i midten av tanken og ved blåseforløpet er væsketett sammensveiset på støtflaten, karakterisert ved at det i minst én av støtoverflåtene (8, 8') ved sveisingen av støtstédet (6; 38) er innpresset en om-løpende fordypning eller flere fordypninger (10, 10') som strekker seg over delområder av omkretsen, og som rager utover like til i nærheten av støtranden (14) .1. Plastic tank with square or domed to oval-shaped sides, which tank is blown from thermoplastic material and is of the order of magnitude of fuel oil tanks, and in which the opposite side walls are arranged with coherent recesses that collide with each other in the middle of the tank and during the blowing process is liquid-tightly welded together on the impact surface, characterized in that in at least one of the impact surfaces (8, 8') during the welding of the impact point (6; 38), a circumferential depression or several depressions (10, 10') which extend over sub-areas of the circumference, and which project outwards close to the impact edge (14) . 2. Tank ifølge krav 1, karakterisert ved at veggtykkelsen på støtstédet (6; 38) er mindre enn summen av veggtykkelserieav begge inntrekkinger (4, 4'; 32, 32') før sammensveisingen.2. Tank according to claim 1, characterized in that the wall thickness at the impact point (6; 38) is less than the sum of the wall thicknesses of both recesses (4, 4'; 32, 32') before the welding. 3. Tank ifølge krav 1, karakterisert ved at fordypningene (10, 10') er utformet med segmentform, idet det mellom de segmentformede fordypninger (10, 10') er dannet gjenværende steg (12, 12').3. Tank according to claim 1, characterized in that the recesses (10, 10') are designed with a segment shape, in that the remaining steps (12, 12') are formed between the segment-shaped recesses (10, 10'). 4. Tank ifølge krav.1 eller 3, karakterisert ved at fordypningene på begge støtoverflater. (8, 8') er speilsymmetrisk anordnet..4. Tank according to claim 1 or 3, characterized in that the depressions on both impact surfaces. (8, 8') is mirror-symmetrically arranged..
NO753678A 1974-11-04 1975-11-03 PLASTIC TANK. NO137436C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19742452249 DE2452249B2 (en) 1974-11-04 1974-11-04 TANK MADE FROM THERMOPLASTIC PLASTIC
DE7505698 1975-02-25
DE7508728 1975-03-19

Publications (3)

Publication Number Publication Date
NO753678L NO753678L (en) 1976-05-05
NO137436B true NO137436B (en) 1977-11-21
NO137436C NO137436C (en) 1978-03-01

Family

ID=27186148

Family Applications (1)

Application Number Title Priority Date Filing Date
NO753678A NO137436C (en) 1974-11-04 1975-11-03 PLASTIC TANK.

Country Status (8)

Country Link
CH (1) CH608460A5 (en)
DK (1) DK494575A (en)
FI (1) FI58759C (en)
FR (1) FR2289398A1 (en)
LU (1) LU73705A1 (en)
NL (1) NL7512849A (en)
NO (1) NO137436C (en)
SE (1) SE7512253L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2732881C2 (en) * 1977-07-21 1982-02-11 Maschinen- Und Werkzeugbau Gmbh, 3563 Dautphetal Storage containers of plastic for liquids, in particular heating oil
ATE315530T1 (en) * 2002-12-19 2006-02-15 Roth Werke Gmbh LIQUID TANK AND METHOD OF MAKING A LIQUID TANK
AT414090B (en) * 2004-08-11 2006-09-15 Hoerbiger Automatisierungstech FLUID-FILLABLE, VOLUME-CHANGEABLE BODY

Also Published As

Publication number Publication date
NO137436C (en) 1978-03-01
LU73705A1 (en) 1976-06-11
FR2289398B1 (en) 1979-04-06
FI58759C (en) 1981-04-10
FR2289398A1 (en) 1976-05-28
CH608460A5 (en) 1979-01-15
FI58759B (en) 1980-12-31
DK494575A (en) 1976-05-05
SE7512253L (en) 1976-05-05
NL7512849A (en) 1976-05-06
FI753069A (en) 1976-05-05
NO753678L (en) 1976-05-05

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