NO793128L - DEVICE FOR EXTRUSION OF ROES. - Google Patents
DEVICE FOR EXTRUSION OF ROES.Info
- Publication number
- NO793128L NO793128L NO793128A NO793128A NO793128L NO 793128 L NO793128 L NO 793128L NO 793128 A NO793128 A NO 793128A NO 793128 A NO793128 A NO 793128A NO 793128 L NO793128 L NO 793128L
- Authority
- NO
- Norway
- Prior art keywords
- smooth
- mandrel
- screw
- mold part
- pipes
- Prior art date
Links
- 238000001125 extrusion Methods 0.000 title description 3
- 238000005461 lubrication Methods 0.000 claims description 6
- 230000001050 lubricating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29L2023/00—Tubular articles
- B29L2023/003—Tubular articles having irregular or rough surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Meat, Egg Or Seafood Products (AREA)
Description
Anordning for ekstrudering av rør.Device for extruding pipes.
Foreliggende oppfinnelse angår en anordning for ekstrudering av sirkelsylindriske plastrør,med enten glatt innerflate og ribbeformet ytterflate eller ribbeformet innerflate og glatt ytterflate, omfattende en ekstruder med mateskrue for transport og mykgjøring av massen, samt en ringdyse med en sentral dor som utgjøres av en sirkelsylindrisk, koaksial forlengelse av mateskruen. The present invention relates to a device for extruding circular cylindrical plastic pipes, with either a smooth inner surface and a rib-shaped outer surface or a rib-shaped inner surface and a smooth outer surface, comprising an extruder with a feed screw for transporting and softening the mass, as well as a ring nozzle with a central mandrel which consists of a circular cylindrical, coaxial extension of the feed screw.
En ekstruder av den ovennevnte type er kjent fra US-patent nr. 2.144.213. Ekstruderen er imidlertid bare egnet til fremstilling av glatte rør. An extruder of the above type is known from US Patent No. 2,144,213. However, the extruder is only suitable for the production of smooth tubes.
Man har lenge vært klar over at rør med innvendige eller utvendige ribber har stor fordel fremfor glatte rør, It has long been known that pipes with internal or external ribs have a great advantage over smooth pipes,
der rørene utsettes for en radiell belastning. Ribbene gir røret en stor ringstyrke, slik at man ved hjelp av slike rør kan spare materialer. Slike rør har tidligere vært utført i form av korrugert rør, der man ekstruderer et tynnvegget rør som. ved hjelp av trykk eller vakuum formes i formebakker efter ekstruderen. Korrugering blir da likeformet innvendig og utvendig i røret. "pDisse rørene har vært benyttet som såkalte elektrikerrør og f.eks. drensrør, men egner seg dårlig for transport av et medium, f.eks. som avløpsrør, da rørmotstanden blir altfor stor..Ved ekstrudering har man kunnet fremstille ribberør med f.eks. glatt innside ved å fremstille et korrugert rør samtidig som en ekstruder nr. 2 fremstiller et glatt rør. De to rørene formes og sveises sammen i et felles verktøy-kompleks med det korrugerte røret utenpå det glatte. En annen metode er å bearbeide ytterflaten med skjærende verktøy. Begge de to sistnevnte metodene blir selvfølgelig kostbare og er også bare: egnet for bestemte typer plast. where the pipes are subjected to a radial load. The ribs give the pipe a great ring strength, so that with the help of such pipes you can save materials. Such pipes have previously been made in the form of corrugated pipes, where a thin-walled pipe is extruded which. by means of pressure or vacuum it is formed in forming trays after the extruder. Corrugation is then uniformly shaped inside and outside the pipe. "pThese pipes have been used as so-called electrician's pipes and, for example, drainage pipes, but are not suitable for the transport of a medium, for example as drainage pipes, as the pipe resistance becomes far too great. By extrusion, it has been possible to produce ribbed pipes with e.g. eg smooth inside by producing a corrugated tube at the same time as a No. 2 extruder produces a smooth tube. The two tubes are shaped and welded together in a common tool complex with the corrugated tube on the outside of the smooth one. Another method is to process the outer surface with cutting tools Both of the latter two methods will of course be expensive and are also only: suitable for certain types of plastic.
Hensikten med foreliggende oppfinnelse er å fremskaffe en anordning ved hjelp av hvilken man direkte ved ekstrudering kan fremstille et sirkelsylindrisk plastrør med enten glatt innerflate og ribbeformet ytterflate eller ribbeformet innerflate og glatt ytterflate, og dette oppnås ifølge oppfinnelsen ved hjelp av en anordning som innledningsvis angitt, og som erkarakterisert vedat enten er iringdysens stillestående ytre formdel utstyrt med et eller flere parallelle, skruelinje formede spor med gjengeretningen i skruens og dorens dreieretning og den ytre formdelen utstyrt med. smøreinnretning for smøring av glideflaten for plasten, eller at den roterende doren er forsynt med skruespor på mantelflaten og at det da er anordnet smøring på glideflaten og ringdysens stillestående ytre formdel er glatt sylindrisk, at doren er oppruet eller utstyrt med aksielle spor eller lave ribber på i det minste en del av lengden. The purpose of the present invention is to provide a device with the help of which a circular cylindrical plastic pipe can be produced directly by extrusion with either a smooth inner surface and a rib-shaped outer surface or a rib-shaped inner surface and a smooth outer surface, and this is achieved according to the invention by means of a device as indicated at the outset, and which is characterized by either the stationary outer mold part of the ring die being equipped with one or more parallel, helically shaped grooves with the thread direction in the direction of rotation of the screw and the mandrel and the outer mold part equipped with lubrication device for lubrication of the sliding surface for the plastic, or that the rotating mandrel is provided with screw grooves on the mantle surface and that lubrication is then arranged on the sliding surface and that the stationary outer part of the ring nozzle is smooth cylindrical, that the mandrel is roughened or equipped with axial grooves or low ribs on at least part of its length.
Oppfinnelsen skal i det følgende forklares nærmere under henvisning til en skjematisk tegning, hvor In the following, the invention will be explained in more detail with reference to a schematic drawing, where
fig. 1 viser et snitt gjennom en ekstruder ifølge oppfinnelsen for fremstilling av sirkelsylindriske rør med utvendige ribber, og fig. 1 shows a section through an extruder according to the invention for the production of circular cylindrical tubes with external ribs, and
fig. 2 viser en ekstruder ifølge oppfinnelsen for fremstilling av rør med. innvendige ribber. fig. 2 shows an extruder according to the invention for producing pipes with. internal ribs.
Ekstruderen har som vanlig en mateskrue 1 med sylindriske omgivende hus 2. Ekstruderens ringdyse består av en fast ytterdel 3 og en dor 4. Doren 4 er en direkte forlengelse av mateskruen 1 og har i fig. 1 samme diameter som stammen 5 på mateskruen. Den ytre formdelen 3 i ringdysen har i fig. 1 spor 6 etter en skruelinje, altså et gjenget spor. Formdelen 3 kan på vanlig måte (ikke vist på tegningen) være utstyrt med oppvarmingsinnretning ved den første delen (til venstre på tegningen). Ved den midtre delen 7 kan det være tilført smøring under trykk for smøring av glideflaten mellom den faststående formdelen og plasten. Den siste delen kan være utstyrt med vannkjøling 8. As usual, the extruder has a feed screw 1 with a cylindrical surrounding housing 2. The extruder's ring nozzle consists of a fixed outer part 3 and a mandrel 4. The mandrel 4 is a direct extension of the feed screw 1 and has in fig. 1 the same diameter as the stem 5 of the feed screw. The outer mold part 3 in the ring die has in fig. 1 track 6 following a screw line, i.e. a threaded track. The mold part 3 can in the usual way (not shown in the drawing) be equipped with a heating device at the first part (on the left in the drawing). At the middle part 7, lubrication can be added under pressure to lubricate the sliding surface between the fixed mold part and the plastic. The last part can be equipped with water cooling 8.
Plasten 9 transporteres og mykgjøres på grunn av varme og trykk i mateskruen 1,2. Den mykgjorte plasten gis en roterende bevegelse av den roterende doren 4 og ved å til-passe mating og rotasjon vil plastmassen bli gitt en skrue-linjet rotasjon, slik at den blir skrudd ut gjennom den gjengede ytre formdel og det vil bli fremstilt et plastrør 10 med utvendige ribber 11 og glatte innsider 12. The plastic 9 is transported and softened due to heat and pressure in the feed screw 1,2. The softened plastic is given a rotating movement by the rotating mandrel 4 and by adjusting the feed and rotation, the plastic mass will be given a helical rotation, so that it is screwed out through the threaded outer mold part and a plastic tube 10 will be produced with external ribs 11 and smooth insides 12.
Fig. 2 viser en modifikasjon av anordningen i fig. 1. Også her er det en ekstruder med en mateskrue 1 og sylinder 2. Imidlertid er her den ytre formdelen 3' uten gjenget spor, slik at det blir en glatt formflate 13. Derimot er for-lengelsen 4' forsynt med et gjenget spor 14. Plastmassen 9 vil her bevege seg rettlinjet ut gjennom ringdysen idet doren 4' blir skrudd gjennom massen slik at det fremkommer et rør 15 med innvendige ribber 16. Fig. 2 shows a modification of the device in fig. 1. Here, too, there is an extruder with a feed screw 1 and cylinder 2. However, here the outer mold part 3' is without a threaded groove, so that there is a smooth mold surface 13. In contrast, the extension 4' is provided with a threaded groove 14 The plastic mass 9 will here move in a straight line out through the ring nozzle as the mandrel 4' is screwed through the mass so that a tube 15 with internal ribs 16 appears.
Claims (3)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO793128A NO793128L (en) | 1979-09-28 | 1979-09-28 | DEVICE FOR EXTRUSION OF ROES. |
BR8008849A BR8008849A (en) | 1979-09-28 | 1980-09-09 | TUBE EXTRUSION SET |
AU63941/80A AU6394180A (en) | 1979-09-28 | 1980-09-09 | Assembly for extruding pipe |
PCT/NO1980/000028 WO1981000823A1 (en) | 1979-09-28 | 1980-09-09 | Assembly for extruding pipe |
JP50201980A JPS56501237A (en) | 1979-09-28 | 1980-09-09 | |
FI802996A FI802996A (en) | 1979-09-28 | 1980-09-23 | ANORDNING FOER STRAENGSPRUTNING AV ROER |
BE2/58760A BE885352A (en) | 1979-09-28 | 1980-09-24 | DEVICE FOR EXTRUDING TUBES |
AR282657A AR222724A1 (en) | 1979-09-28 | 1980-09-25 | A SET TO EXTRACT CYLINDRICAL PLASTIC MATERIAL CANERIES |
IT83441/80A IT1154744B (en) | 1979-09-28 | 1980-09-26 | ASSEMBLY FOR THE EXTRUSION OF YOURS |
EP80901700A EP0035999A1 (en) | 1979-09-28 | 1981-04-08 | Assembly for extruding pipe |
DK226781A DK226781A (en) | 1979-09-28 | 1981-05-22 | DEVICE FOR EXTRACTING BEETS |
RO81104420A RO88508A (en) | 1979-09-28 | 1981-05-27 | INSTALLATION FOR EXTRUSION OF CONDUITS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO793128A NO793128L (en) | 1979-09-28 | 1979-09-28 | DEVICE FOR EXTRUSION OF ROES. |
Publications (1)
Publication Number | Publication Date |
---|---|
NO793128L true NO793128L (en) | 1981-03-31 |
Family
ID=19885063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO793128A NO793128L (en) | 1979-09-28 | 1979-09-28 | DEVICE FOR EXTRUSION OF ROES. |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0035999A1 (en) |
JP (1) | JPS56501237A (en) |
AR (1) | AR222724A1 (en) |
BE (1) | BE885352A (en) |
BR (1) | BR8008849A (en) |
DK (1) | DK226781A (en) |
FI (1) | FI802996A (en) |
IT (1) | IT1154744B (en) |
NO (1) | NO793128L (en) |
RO (1) | RO88508A (en) |
WO (1) | WO1981000823A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2212256B (en) * | 1987-11-12 | 1992-04-22 | James Gray | Improvements in and relating to heat exchangers |
WO2016005810A1 (en) * | 2014-07-10 | 2016-01-14 | Zehnder Group International Ag | Tube bank for a heating element or a cooling element |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB618536A (en) * | 1946-07-30 | 1949-02-23 | Bx Plastics Ltd | Improvements in or relating to extrusion apparatus |
FR1308929A (en) * | 1961-12-26 | 1962-11-09 | Union Carbide Corp | Finned tubes, and their manufacturing process |
US3496605A (en) * | 1965-10-26 | 1970-02-24 | Yasuyoshi Onaka | Apparatus for extruding ribbed plastic pipe |
CH472957A (en) * | 1967-04-26 | 1969-05-31 | Agk Betr Sgesellschaft Ag | Seepage or drainage pipe made of plastic, method for producing such a pipe and device for carrying out the method |
JPS5240337B2 (en) * | 1973-01-29 | 1977-10-12 | ||
US4053274A (en) * | 1975-01-28 | 1977-10-11 | Lemelson Jerome H | Tube wall forming apparatus |
-
1979
- 1979-09-28 NO NO793128A patent/NO793128L/en unknown
-
1980
- 1980-09-09 BR BR8008849A patent/BR8008849A/en unknown
- 1980-09-09 JP JP50201980A patent/JPS56501237A/ja active Pending
- 1980-09-09 WO PCT/NO1980/000028 patent/WO1981000823A1/en not_active Application Discontinuation
- 1980-09-23 FI FI802996A patent/FI802996A/en not_active Application Discontinuation
- 1980-09-24 BE BE2/58760A patent/BE885352A/en not_active IP Right Cessation
- 1980-09-25 AR AR282657A patent/AR222724A1/en active
- 1980-09-26 IT IT83441/80A patent/IT1154744B/en active
-
1981
- 1981-04-08 EP EP80901700A patent/EP0035999A1/en not_active Withdrawn
- 1981-05-22 DK DK226781A patent/DK226781A/en not_active Application Discontinuation
- 1981-05-27 RO RO81104420A patent/RO88508A/en unknown
Also Published As
Publication number | Publication date |
---|---|
RO88508A (en) | 1986-02-28 |
BR8008849A (en) | 1981-07-21 |
IT1154744B (en) | 1987-01-21 |
DK226781A (en) | 1981-05-22 |
AR222724A1 (en) | 1981-06-15 |
FI802996A (en) | 1981-03-29 |
EP0035999A1 (en) | 1981-09-23 |
IT8083441A0 (en) | 1980-09-26 |
WO1981000823A1 (en) | 1981-04-02 |
BE885352A (en) | 1981-01-16 |
JPS56501237A (en) | 1981-09-03 |
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