NO131688B - - Google Patents

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Publication number
NO131688B
NO131688B NO391571A NO391571A NO131688B NO 131688 B NO131688 B NO 131688B NO 391571 A NO391571 A NO 391571A NO 391571 A NO391571 A NO 391571A NO 131688 B NO131688 B NO 131688B
Authority
NO
Norway
Prior art keywords
container
powder
plastic powder
sprinkled
plastic
Prior art date
Application number
NO391571A
Other languages
Norwegian (no)
Other versions
NO131688C (en
Inventor
J Dragsted
Original Assignee
Burmeister & Wains Mot Mask
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
Application filed by Burmeister & Wains Mot Mask filed Critical Burmeister & Wains Mot Mask
Publication of NO131688B publication Critical patent/NO131688B/no
Publication of NO131688C publication Critical patent/NO131688C/no

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00Pistons 
    • F02F3/16Pistons  having cooling means
    • F02F3/20Pistons  having cooling means the means being a fluid flowing through or along piston
    • F02F3/22Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00Pistons 
    • F02F3/0015Multi-part pistons
    • F02F3/0023Multi-part pistons the parts being bolted or screwed together
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00Engines characterised by air compression and subsequent fuel addition
    • F02B3/06Engines characterised by air compression and subsequent fuel addition with compression ignition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00Pistons 
    • F02F3/0015Multi-part pistons
    • F02F3/003Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • F02F2003/0061Multi-part pistons the parts being connected by casting, brazing, welding or clamping by welding
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00Manufacturing
    • F02F2200/04Forging of engine parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00Metals
    • F05C2201/04Heavy metals
    • F05C2201/0433Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448Steel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Coating Apparatus (AREA)

Description

Anordning til å belegge gjenstander, særlig større metallgjenstander med termoplast. Device for coating objects, especially larger metal objects with thermoplastic.

Ved en kjent metode til å belegge By a known method of coating

metallgjenstander eller -deler med termoplast har man gått frem på den måte at der i en beholder er anordnet et filter og at der ovenpå filteret er anbrakt en masse av plastpulver, i hvilken den gjenstand som skal belegges trenger ned. Be-tegningen finner sted ved at der blåses fortrinnsvis oppvarmet luft gjennom filteret og plastpulveret. En annen metode består i at vedkommende gjenstand dyp-pes i en såkalt «plastisol», dvs. en flytende plastmasse. metal objects or parts with thermoplastic, the approach has been taken in such a way that a filter is arranged in a container and that a mass of plastic powder is placed on top of the filter, into which the object to be coated penetrates. The coating takes place by blowing preferably heated air through the filter and the plastic powder. Another method consists in the object in question being dipped in a so-called "plastisol", i.e. a liquid plastic mass.

Disse kjente metoder har imidlertid However, these known methods have

den ulempe at de bare med vanskelighet kan benyttes for belegning av store gjenstander, og at dessuten avkjølingen av plastbelegget foregår så hurtig at plastbelegget ikke festner seg ordentlig til rae-tallunderlaget, da det tar for meget varme fra metallet. Det er også i forbindelse med de kjente metoder foreslått å strø plas-ten i pulverform på gjenstanden. the disadvantage that they can only be used with difficulty for coating large objects, and that furthermore the cooling of the plastic coating takes place so quickly that the plastic coating does not adhere properly to the rae number substrate, as it takes too much heat from the metal. In connection with the known methods, it has also been proposed to sprinkle the plastic in powder form on the object.

Ved belegning av større gjenstander krever de kjente metoder forholdsvis komplisert apparatur, bl. a. en etterbe-handling av gjenstanden for å oppnå en tilstrekkelig langsom avkjøling. When coating larger objects, the known methods require relatively complicated equipment, e.g. a. a post-treatment of the object to achieve a sufficiently slow cooling.

Foreliggende oppfinnelse vedrører en The present invention relates to a

anordning til å belegge gjenstander, særlig større metallgjenstander med termoplast, hvor gjenstanden påstrøs et plastpulver som sintres fast i ønsket sjikttyk-kelse, idet oppfinnelsen går ut på med enkle midler å kunne belegge større gjenstander, særlig av metall, men også gjenstander av f. eks. plast, porselen, kunst-stoffer og tre, på en sådan måte at der device for coating objects, especially larger metal objects with thermoplastic, where the object is sprinkled with a plastic powder that is sintered firmly in the desired layer thickness, as the invention aims to be able to coat larger objects, especially of metal, but also objects of e.g. e.g. plastic, porcelain, synthetic materials and wood, in such a way that there

oppnås et jevnt belegg som alltid hefter fast til underlaget. an even coating is achieved which always adheres firmly to the substrate.

Med dette formål for øye består fremgangsmåten i henhold til oppfinnelsen i at en om en horisontal akse dreibar beholder som er beregnet på å være delvis fylt med plastpulver og inne i hvilken den gjenstand som skal belegges holdes i omdreining, på innsiden er utstyrt med skovler eller lommer ved hjelp av hvilke det fortrinnsvis oppvarmede plastpulver løftes opp fra beholderens bunn og drysses over gjenstanden. With this aim in mind, the method according to the invention consists in a container rotatable about a horizontal axis, which is intended to be partially filled with plastic powder and inside which the object to be coated is held in rotation, is equipped on the inside with paddles or pockets by means of which the preferably heated plastic powder is lifted from the bottom of the container and sprinkled over the object.

Ved en anordning for fremgangsmå-tens utførelse er der sørget for innadrettet trekk fra anordningens forside, og at beholderen på motsatt side har en med en filterduk dekket åpning i tilknytning In the case of a device for carrying out the method, provision is made for an inward draft from the front of the device, and that the container on the opposite side has an adjacent opening covered with a filter cloth

til en sugeinnretning, i det øyemed å hindre at pulver skal drysse ut på den forside hvor apparatet betjenes. to a suction device, in order to prevent powder from sprinkling onto the front where the device is operated.

Den nevnte beholder oppvarmes ved at varm luft blåses inn i et rom som omgir beholderen, slik at plastpulveret og luften inne i beholderen holdes på en ønsket temperatur. The said container is heated by blowing hot air into a room surrounding the container, so that the plastic powder and the air inside the container are kept at a desired temperature.

Den nevnte skovlinnretning (løfte-innretning) kan være som lommer i veg-gen på selve beholderen som også om-dreies. The mentioned shovel device (lifting device) can be like pockets in the wall of the container itself which is also rotated.

Oppfinnelsen er rent skjematisk an-skueliggjort på tegningen, hvor: Fig. 1 viser en anordning for utførelse av fremgangsmåten i henhold til oppfinnelsen, sett fra en ende av beholderen. The invention is purely schematically illustrated in the drawing, where: Fig. 1 shows a device for carrying out the method according to the invention, seen from one end of the container.

Fig. 2 viser et sideriss til fig. 1. Fig. 2 shows a side view of fig. 1.

Fig. 3 er et sideriss svarende til fig. Fig. 3 is a side view corresponding to fig.

2, men illustrerer den ovenfor nevnte «avsugning» av pulveret. 2, but illustrates the above-mentioned "extraction" of the powder.

På tegningen betegner 1 beholderen som er omgitt av en kappe 2. Beholderen er ved hver ende understøttet av valser 3 som er roterbare på en slik måte at beholderen vil dreie seg ved omdreining av valsene 3. In the drawing, 1 denotes the container which is surrounded by a jacket 2. The container is supported at each end by rollers 3 which are rotatable in such a way that the container will rotate when the rollers 3 rotate.

I fig. 2 betegner 4 en motor med snek-keutveksling og 5 betegner en kjede-transmisjon mellom de to drivvalser på hver sin side av beholderen. In fig. 2, 4 denotes a motor with a worm gear and 5 denotes a chain transmission between the two drive rollers on either side of the container.

Beholderen 1 er på innsiden forsynt med et stort antall jevnt fordelte lommer eller skovler 6. Som antydet ved lin-jen 7 er beholderen delvis, dvs. ved bun-nen, fylt med en masse av plastpulver, som således fyller de lommer 6 i beholderen som dekkes av pulvermassen. For belegging av en gjenstand med plast blir gjenstanden på forhånd oppvarmet og føres inn i beholderen 1; i hvilken der er anordnet en ikke vist drivinnretning for fastholdelse og omdreining av gjenstanden. Deretter dreies beholderen 1, slik at de med plastpulver fylte lommer ved beholderens bunn føres oppover og over gjenstanden, slik at plastpulveret fra lommene vil drysse over gjenstanden. The container 1 is provided on the inside with a large number of evenly distributed pockets or scoops 6. As indicated by the line 7, the container is partially, i.e. at the bottom, filled with a mass of plastic powder, which thus fills the pockets 6 in the container which is covered by the powder mass. For coating an object with plastic, the object is pre-heated and introduced into the container 1; in which a drive device, not shown, is arranged for retaining and rotating the object. The container 1 is then turned, so that the pockets filled with plastic powder at the bottom of the container are guided upwards and over the object, so that the plastic powder from the pockets will sprinkle over the object.

Gjenstanden som på forhånd er blitt oppvarmet til f. eks. 300° C, overdrysses i løpet av noen få sekunder når et forholdsvis tynt lag er ønskelig; når et tykkere lag er ønskelig, skjer over dry ssingen i til-svarende lengere tid. Da både gjenstanden, beholderen, plastpulveret og luften kan være oppvarmet, er det lett mulig å regulere avkjølingen slik at den belagte gjenstand ikke kjøles for fort, idet beleg-get i så tilfelle ikke festner seg ordentlig til underlaget, da det trekker for meget varme fra metallet. The object which has been heated in advance to e.g. 300° C, sprinkled over within a few seconds when a relatively thin layer is desired; when a thicker layer is desired, the sprinkling takes place for a correspondingly longer time. As both the object, the container, the plastic powder and the air can be heated, it is easily possible to regulate the cooling so that the coated object does not cool too quickly, as the coating in that case does not adhere properly to the substrate, as it absorbs too much heat from the metal.

I fig. 1 er der antydet varmerør 8 for tilførsel av varm luft til kappen 2, dvs. til det rom som omgir beholderen. In fig. 1 there is an indication of heating pipe 8 for the supply of hot air to the jacket 2, i.e. to the room surrounding the container.

Som illustrert i fig. 3 er der sørget for innadrettet trekk fra anordningens forside, idet beholderen på den motsatte side har en med en filterduk dekket åpning i tilknytning til en vifte 10 med av-løp. Herved hindres at pulver drysses ut på den forside hvor apparatet betjenes. As illustrated in fig. 3 there is provision for an inward draft from the front of the device, the container on the opposite side having an opening covered with a filter cloth adjacent to a fan 10 with drain. This prevents powder from being sprinkled on the front where the device is operated.

Claims (2)

1. Anordning til å belegge gjenstander, særlig større metallgjenstander med termoplast, hvor gjenstanden påstrøs et plastpulver som sintres fast i ønsket sjikt-tykkelse, karakterisert ved at en om en horisontal akse dreibar beholder som er beregnet på å være delvis fylt med plastpulver og inne i hvilken den gjenstand som skal belegges holdes i omdreining, på innsiden er utstyrt med skovler eller lommer ved hjelp av hvilke det fortrinnsvis oppvarmede plastpulver løftes opp fra beholderens bunn og drysses over gjenstanden.1. Device for coating objects, especially larger metal objects with thermoplastic, where the object is sprinkled with a plastic powder that is sintered to the desired layer thickness, characterized in that a container rotatable about a horizontal axis which is intended to be partially filled with plastic powder and inside in which the object to be coated is held in rotation, the inside is equipped with paddles or pockets with the help of which the preferably heated plastic powder is lifted up from the bottom of the container and sprinkled over the object. 2. Anordning som angitt i påstand 1, karakterisert ved at der er sørget for innadrettet trekk fra anordningens forside, og at beholderen på motsatt side har en med en filterduk dekket åpning i tilknytning til en sugeinnretning, i det øyemed å hindre at pulver skal drysse ut på den forside hvor apparatet betjenes.2. Device as specified in claim 1, characterized in that an inward draft is provided from the front of the device, and that the container on the opposite side has an opening covered with a filter cloth in connection with a suction device, with the aim of preventing powder from being sprinkled out on the front where the appliance is operated.
NO391571A 1970-10-23 1971-10-21 NO131688C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK541370A DK123730B (en) 1970-10-23 1970-10-23 Piston for internal combustion engines.

Publications (2)

Publication Number Publication Date
NO131688B true NO131688B (en) 1975-04-01
NO131688C NO131688C (en) 1975-07-09

Family

ID=8142236

Family Applications (1)

Application Number Title Priority Date Filing Date
NO391571A NO131688C (en) 1970-10-23 1971-10-21

Country Status (15)

Country Link
JP (1) JPS5429645B1 (en)
BE (1) BE774337A (en)
BR (1) BR7107075D0 (en)
DK (1) DK123730B (en)
ES (1) ES396291A1 (en)
FI (1) FI51989B (en)
FR (1) FR2187021A5 (en)
GB (1) GB1336520A (en)
IE (1) IE35765B1 (en)
IT (1) IT942737B (en)
NL (1) NL7114547A (en)
NO (1) NO131688C (en)
SE (1) SE365284B (en)
SU (1) SU550129A3 (en)
YU (1) YU34811B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712299Y2 (en) * 1976-07-12 1982-03-11
DK172217B1 (en) * 1995-08-11 1998-01-05 Dampskibsselskabet Af 1912 Piston for diesel engines
DE102007016945A1 (en) * 2007-04-05 2008-10-30 Mahle International Gmbh Piston for an internal combustion engine
RU193836U1 (en) * 2018-11-09 2019-11-18 Федеральное государственное бюджетное образовательное учреждение высшего образования "Керченский государственный морской технологический университет" (ФГБОУ ВО "КГМТУ") COOLED PISTON OF KREYTSOPFNY INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
BR7107075D0 (en) 1973-04-10
SE365284B (en) 1974-03-18
YU34811B (en) 1980-03-15
FI51989B (en) 1977-01-31
NL7114547A (en) 1972-04-25
IE35765L (en) 1972-04-23
NO131688C (en) 1975-07-09
ES396291A1 (en) 1974-04-16
IE35765B1 (en) 1976-05-12
IT942737B (en) 1973-04-02
JPS5429645B1 (en) 1979-09-25
BE774337A (en) 1972-02-14
DK123730B (en) 1972-07-24
DE2151869A1 (en) 1972-04-27
DE2151869B2 (en) 1973-01-04
FR2187021A5 (en) 1974-01-11
YU268971A (en) 1979-09-10
SU550129A3 (en) 1977-03-05
GB1336520A (en) 1973-11-07

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