AU618069B2 - An apparatus for curing insulating chutes - Google Patents
An apparatus for curing insulating chutes Download PDFInfo
- Publication number
- AU618069B2 AU618069B2 AU29341/89A AU2934189A AU618069B2 AU 618069 B2 AU618069 B2 AU 618069B2 AU 29341/89 A AU29341/89 A AU 29341/89A AU 2934189 A AU2934189 A AU 2934189A AU 618069 B2 AU618069 B2 AU 618069B2
- Authority
- AU
- Australia
- Prior art keywords
- mould
- insulating
- male part
- core
- female
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
- B29K2995/0015—Insulating
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Insulating Bodies (AREA)
- Electrostatic Separation (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Description
lend tc-: Plant manager Signature(s) of declarantlsi Production manager To: The Commissioner of Patents, Australia OPI DATE 06/09/89 AOJP DATE 05/10/89 APPLN. ID 29341 89 PCT NUMBER PCT/F189/00012
PCI
INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (51) International Patent Classification 4 F16L 59/02 (11) International Publication Number: WO 89/ 07732 A (43) International Publication Date: 24 August 1989 (24.08.89) (21) International Application Number: PCT/F189/00012 S(22) International Filing Date: 23 January 1989 (23.01.89) (81) Designated States: AT (European patent), AU, BE (European patent), BG, CH(Eur~pean tent), DE (Euro7" &nt) R Euroean(P~tnt), GB (Euroan ITent)V J jEuropean-patent), JP, KR, LIV uroear 'ptent), NL (Europeaii patent), NO, ROt, (European patent), SU, US.
Published With international search report.
(31) Priority Application Number: 880667 (32) Priority Date: (33) Priority Country: 12 February 1988 (12.02.88) (71) Applicant (for all designated States except US): OY PARTEK AB [Fl/Fl]; SF-21600 Parainen (Fl).
(72) Inventor; and Inventor/Applicant (for US only) SOIKKELI, Osmo [Fl/Fl]; Mantylantie 14, SF-53650 Lappeenranta (74) Agent: OY KOLSTER AB; Stora Robertsgatan 23, P.O.
Box 148, SF-00121 Helsinki (54) Title: AN APPARATUS FOR CURING INSULATING CHUTES (57) Abstract The invention relates to an apparatus for curing insulating chutes. The apparatus comprises a two-part mould 2) one part of which is a male part and the other iale part The leading edge of the male part comes into contact with the inner surface of the female palt \2jand slides therealong before making contact with the insulating chute preform positioned in the mould. The object is to prevent the spreading of wool from the mould between the mould halves.
WO 89/07732 PCT/F89/00012 1 An apparatus for curing insulating chutes The present invention relates to an apparatus for curing insulating chutes, comeprising a two-part mould and means for. applying curing air through the mould and through an insulating chute preform arranged around a core disposed in the mould.
The prior art disclosed above is represented by US-PS 2 778 759.
A disadvantage of the apparatus known from the prior art is the formation of burrs on the outer surface of the chute at the junction plane of the mould halves. The halves cannot fully make contact with each other because of burrs formed by the wool spreading between the planes.
The object is to provide a new apparatus for curing insulating chutes without the formation of such burrs.
The apparatus according to the invention is mainly characterized in that the two-part mould comprises a male part and a female part, and that a leading edge in the male part is arranged to come into contact with the inner surface of the female part and to slide therealong before making contact with the insulating chute preform.
Preferably the leading edge of the male part is sharp and flexible, whereas the female part comprises 2a straight guide surface extending from the diametral plane of the insulating chute towards the male part and terminating in a widening receiving opening, the flexible leading edge of the male part being arranged to come into contact with the inner surface of the female part within the area of said widening receiving opening.
Since the leading edge of the male part slides WO 89/07732 PC/FI89/00012 2 along the inner surface of the female part in close contact therewith, no opening enabling the formation of a burr during the curing is left between the mould parts.
With large insulating chutes generally having an inner diameter of 90 mm or more, it is preferable to use a perforated core and apply curing air from each one of the mould parts through the insulating chute preform into the core cavity, or vice versa.
With small insulating chutes generally having an inner diameter less than 90 mm, it is preferable to use a solid core and apply curing air from one mould part through the insulating chute preform into the other mould part. ?e-A c\ In the following the invention will be described with reference to the attached schematical drawing.
Figure 1 shows a mould in an open position.
Figure 2 shows the mould in a partially closed position.
Figure 3 shows the mould in a closed position.
The reference numeral 1 indicates the male part of the curing mould; the reference numeral 2 indicates the female part of the mould; 3 indicates a core; and 4 indicates an insulating chute preform arranged around the core. Both the male part 1 and the female part 2 comprise a perforated inner surface preferably semi-cylindrical in shape.
The male part 1 preferably comprises a sharp flexible leading edge 5, whereas the inner surface of the female part 2 extends from the diametral plane of the semi-cylinder towards the male part preferably in the form of a straight guide surface 6 terminating in a widening receiving opening 7.
The core 3 with the insulating chute preform 4,
I
WO 89/07732 PCT/FI89/00012 3 supported e.g. at the ends thereof by a transporter, is brought to the open mould to a position shown in Figure 1. The female part 2 of the mould is lifted to a position shown in Figure 2, whereafter the male part 1 of the mould is lowered to the position shown in Figure 3.
The flexible leading edges 5 of the male part 1 preferably first come into contact with the inner surface of the receiving opening 7 in the female part 2 and slide onwards along the guide surface 6, being pressed against the guide surface until the preform 4 makes contact with the semi-cylindrical surface of the male part 1. The leading edges 5 of the male part thereby extend approximately up to the diametral plane of the semi-cylindrical surface of the female part.
If, as in the specific case of the drawing, the insulating chute is large, that is, its inner diameter is generally at least about 90 mm, the core 3 to be used is perforated and curing air is applied through each one of the hollow mould parts 1 and 2 through the insulating chute preform 4 into the internal cavity of the core 3, arrows in Figure 3. With a small chute, it is preferable to use a solid core and to apply curing air e.g. from a cavity 12 in the male part 1 through the chute preform 4 into a cavity 14 in the Q roLJS \n re 3 female part 2 of the mould In this case, the female part 2 of the mould is preferably divided into two cavities 13 and 14, whereby the air pressure in the Scavities 13 is atmospheric.
Claims (4)
1. An apparatus for curing insulating chutes, comprising a two-part mould and means for applying curing air through the mould and through an insulating chute preform arranged around a core disposed in said mould, characterized in that the two- part mould comprises a male part and a female part, and that a leading edge in the male part is arranged to come into contact with an inner surface of the female part and to slide therealong before making contact with the insulating chute preform.
2. An apparatus according to claim 1 characterized in that the leading edge of the male part is sharp and flexible.
3. An apparatus according to claim 1 or 2, characterized in that the female o° part comprises a straight guide surface extending towards the male part and terminating in a widening receiving opening. o S4. An apparatus according to claim 2 and 3, characterized in that the flexible leading edge of the male part is arranged to come into contact with the inner surface of the female part within the area of said widening receiving opening. An apparatus according to claim 1 for large insulating chutes, characterized in that the core is perforated and curing air is arranged to be applied from each one of the mould parts through the insulating chute preform into the core cavity, or rvice versa. 1 f J. i I 7 S
6. An apparatus according to claim 1 for small insulating chutes characterized in that the core is solid and curing air is arranged to be applied from one mould part through the insulating chute preform into the other mould part. DATED this 20th day of September, 1991. OY PARTEK AB WATERMARK PATENT TRADEMARK ATTORNEYS THE ATRIUM 290 BURWOOD ROAD HAWTHORN VICTORIA 3122 AUSTRALIA /0 'S 4 ?VCY
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI880667 | 1988-02-12 | ||
| FI880667A FI79188C (en) | 1988-02-12 | 1988-02-12 | ANORDNING FOER HAERDNING AV ISOLERINGSROER. |
| PCT/FI1989/000012 WO1989007732A1 (en) | 1988-02-12 | 1989-01-23 | An apparatus for curing insulating chutes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2934189A AU2934189A (en) | 1989-09-06 |
| AU618069B2 true AU618069B2 (en) | 1991-12-12 |
Family
ID=26158306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU29341/89A Ceased AU618069B2 (en) | 1988-02-12 | 1989-01-23 | An apparatus for curing insulating chutes |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR0125620B1 (en) |
| AU (1) | AU618069B2 (en) |
| DE (1) | DE68902826T2 (en) |
| NO (1) | NO180061C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101293292B1 (en) * | 2011-04-05 | 2013-08-09 | 김영덕 | Methods for forming pipe-shaped insulator and fabricating heater jacket including pipe-shaped insulator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2778759A (en) * | 1952-11-05 | 1957-01-22 | Gustin Bacon Mfg Co | Thermal pipe insulation |
-
1989
- 1989-01-23 AU AU29341/89A patent/AU618069B2/en not_active Ceased
- 1989-01-23 KR KR1019890701633A patent/KR0125620B1/en not_active IP Right Cessation
- 1989-01-23 DE DE8989901562T patent/DE68902826T2/en not_active Expired - Lifetime
-
1990
- 1990-08-01 NO NO903395A patent/NO180061C/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2778759A (en) * | 1952-11-05 | 1957-01-22 | Gustin Bacon Mfg Co | Thermal pipe insulation |
Also Published As
| Publication number | Publication date |
|---|---|
| KR0125620B1 (en) | 1998-11-16 |
| NO180061B (en) | 1996-10-28 |
| NO903395L (en) | 1990-08-01 |
| DE68902826T2 (en) | 1993-01-14 |
| NO903395D0 (en) | 1990-08-01 |
| AU2934189A (en) | 1989-09-06 |
| DE68902826D1 (en) | 1992-10-15 |
| KR900700819A (en) | 1990-08-17 |
| NO180061C (en) | 1997-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC | Assignment registered |
Owner name: PAROC GROUP OY AB Free format text: FORMER OWNER WAS: OY PARTEK AB |
|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |