WO2019011587A1 - Procédé et dispositif de production d'une section de tuyau pour isolation thermique - Google Patents

Procédé et dispositif de production d'une section de tuyau pour isolation thermique Download PDF

Info

Publication number
WO2019011587A1
WO2019011587A1 PCT/EP2018/066048 EP2018066048W WO2019011587A1 WO 2019011587 A1 WO2019011587 A1 WO 2019011587A1 EP 2018066048 W EP2018066048 W EP 2018066048W WO 2019011587 A1 WO2019011587 A1 WO 2019011587A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe section
cutting device
mineral wool
blade
longitudinal axis
Prior art date
Application number
PCT/EP2018/066048
Other languages
English (en)
Inventor
Stephan-Ferdinand Reichinger
Original Assignee
Deutsche Rockwool Gmbh & Co. Kg
Rockwool International A/S
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 Deutsche Rockwool Gmbh & Co. Kg, Rockwool International A/S filed Critical Deutsche Rockwool Gmbh & Co. Kg
Publication of WO2019011587A1 publication Critical patent/WO2019011587A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/28—Splitting layers from work; Mutually separating layers by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0683—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form specially adapted for elongated articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/28—Means for performing other operations combined with cutting for counting the number of cuts or measuring cut lenghts

Definitions

  • the invention provides a method for producing a pipe section for thermal, acoustic and/or fire insulation having a body made of mineral wool and provided with a longitudinal axis and a circular cross section, an outer surface and an inner opening being arranged centrically in the body and extending through the whole body. Furthermore the invention provides a device for producing a pipe section for thermal, acoustic and/or fire insulation having a body made of mineral wool and provided with a longitudinal axis and a circular cross section, an outer surface and an inner opening being arranged centrically in the body and extending through the whole body, said device comprising a support for carrying the pipe section.
  • Insulation elements having a body made of fibers, especially mineral fibers, preferably stone wool and provided with a longitudinal axis and a circular cross section, an outer surface and an inner opening being arranged centrically in the body and extending through the whole body are well known as fibrous tubular pipe insulation members made from mats of fibers and are used for the insulation of tubes for liquids or gases.
  • Such tubular pipe insulation is usually made by wrapping a length of mat around a forming mandrel whose external diameter corresponds to that of the pipe to be insulated.
  • the mat may be either pre-treated with a settable binder, which is caused to set after wrapping on the mandrel, or the material may be treated with a binder after wrapping, which is then caused to set.
  • thermo setting resin binder For many applications, a thermo setting resin binder is commonly used, and often additives are added as well.
  • Such length of fibrous tubular pipe insulation are known as pipe sections.
  • one wall of the thus formed pipe section is slit through axially to enable it to be fitted over an existing pipe.
  • a partial slit may also be made in the opposite wall, from the inside.
  • the tube may be slit into two halves.
  • An apparatus for producing pipe sections on a semi-automatic basis comprises a wrapping station where binder-impregnated length of mat are cut from a roll and wrapped around individual forming mandrels. These mandrels and pipe sections are then forwarded by a conveyer through an oven, wherein the binder is caused to set. After setting the . binder, the pipe section still on their forming mandrels are forwarded by the same or another conveyor to a station at which the mandrels are removed for return to the wrapping station.
  • the external surface of a pipe section can be shaped by using an external sleeve, preferably foraminous to facilitate setting of the binder by means of hot air streams, but this approach demands not only a large stock of mandrels, but also an even larger stock of external sleeves, since the pipe section thickness may have to be changed to meet different insulation requirements.
  • the mandrel and sleeve must be kept sensibly concentric, which may present considerable handling problems in a production line process. It is also possible to smooth the outer surface of a pipe section whilst setting the binder.
  • the pipe section can be rotated on its mandrel whilst presenting its outer surface to a concaved curved stational surface which smoothes and compresses the surface of the fibrous mat.
  • fibrous mats can be of variable density and this smoothing technique may give a pipe section of non-uniform wall thickness.
  • an apparatus for manufacturing pipe sections comprising an abrasive treatment apparatus with conveyor means operable to receive pipe sections mounted on their respective forming mandrels after setting the binder and to forward said pipe sections on said mandrels to an abrasive treatment station, abrading means at said station to abrade the outer surface of said pipe sections and means to rotate a pipe section, on its mandrel, in contact with said abrading means whilst maintaining a control spacing between the mandrel and the abrading means.
  • a preferred abrading means is a grinding roller. Alternatively a finishing belt may also be used.
  • the abrasive treatment is applied to the pipe section whilst it is still mounted on the mandrel on which it was formed and in a conventional section manufacturing apparatus, a plurality of such forming mandrels is employed, a conveyor being used to advance these mandrels through the various stages of the manufacturing process.
  • the central hole is not always located at the exact center of the pipe section.
  • the variation may not be important, but when more pipe sections are arranged after each other along the pipe the un-alignment becomes clearly visible, since the pipe sections show a step from one pipe section to the other.
  • the outer cladding or the outer cladding is a pre-applied alloy foil or a flexible outer cladding is applied on site such step is clearly visible and there is also the risk of technical failure in this area. Furthermore, this appearance can be qualified as low quality.
  • the advantage of the method according to the invention is that any mineral wool being arranged outside a predetermined radial distance from the longitudinal axis can be removed very easily by cutting off the mineral wool, which can be made of mineral fibers and of binder with the cutting device which can be done in one or more consecutive cutting steps avoiding a big amount of dust.
  • the pipe section made of mineral wool contains a binder whereby the binder is cured before any mineral wool is removed by the cutting device.
  • the method according to the invention can be realized in that the pipe section is moved towards a stationary cutting device, while the pipe section is rotating or in that the cutting device is moved towards the pipe section, while the pipe section is rotating. It is preferred to move the cutting device towards the pipe section which has the advantage that the cutting device can be adjusted in a predetermined distance to the longitudinal axis so that several insulation pipe sections can be treated according to the method in consecutive steps. The quality of these pipe sections is increased hereby.
  • the removed fibers may be returned to a recycling process for the production of fibers.
  • the removed fibers containing a binder can be returned directly to a melting device, but it is preferred to use the removed fibers for the production of artificial stones, so-called briquettes, which are moulded from these removed fibers and used in the melting device.
  • the removed mineral wool material is scattered evenly on top of a new web of uncured mineral wool that is about to be wound into a pipe section.
  • a cladding is applied to the outer surface of the pipe section after removing the fibers.
  • a cladding can be used to realize a highly even surface of the insulation pipe section.
  • a cladding can be used as a basis for a further cladding being applied to a pipe insulated with several pipe sections which covers several pipe sections and therefore the joints between two neighbored insulation pipe sections, too.
  • the before-mentioned object is solved by a cutting device with a blade for removing mineral wool from the outer surface of the body, whereby the cutting device has a length being at least equal to the length of the body, whereby the cutting device is arranged parallel to the longitudinal axis of the body, whereby the support for the cutting device is provided with a first drive for a movement of the outer surface of the body relatively and rotationally preferably for at least 360° to the cutting device and whereby the support or the cutting device is provided with a second drive for a movement of the cutting device relatively to the outer surface of the body.
  • the support is provided with a mandrel onto which the pipe section is placed.
  • the blade is provided, especially tightly stretched between two supports of the cutting device.
  • the blade is arranged at the supports of the cutting device in that the blade can be moved in length-wise direction of the supports from and to the pipe section.
  • the cutting device can be adjusted in a position relatively to the insulation pipe section which allows to remove any mineral wool being arranged outside a predetermined radial distance from the longitudinal axis.
  • the cutting device is provided with at least one distance holder being adjustable with respect to the distance of the blade to the outer surface of the pipe section.
  • Such a distance holder has the advantage that the distance can be pre-adjusted before several insulation pipe sections are worked on in the device resulting in several insulation pipe sections of high quality because of their exact identical dimensions.
  • FIG. 1 a fibrous tubular pipe section in a cut side elevation
  • Fig. 1b the fibrous tubular pipe section according to fig. 1a in a view on a first face side;
  • Fig. 1c the fibrous tubular pipe section according to figures 1a and 1b in view on a second face side;
  • Fig. 2a the fibrous tubular pipe section according to figures 1a to 1c in a device for producing a pioe section in a cut side view
  • Fig. 2b the device and the fibrous tubular pipe section according to figure 2a in a view on the face side.
  • Figures 1a to 1c show a fibrous tubular pipe section 1 having a body 2 made of mineral wool, especially of mineral fibers connected by a binding agent.
  • the body 2 has an outer surface 3 and an inner opening 4 is arranged centrically in the body 2 and extends through the whole body 2.
  • the pipe section 1 is used for thermal insulation of pipes.
  • the pipe section 1 is produced by wrapping a fibrous mat around a mandrel 5 (compare fig. 2a/2b) and it can be seen from Fig. 1a to 1c that the opening 4 is partly not arranged exactly centrically in the body 2.
  • Figure 1a shows thicknesses S ( 3 ⁇ 4, S 3 and S 4 of the body 2 which differ from each other. These thicknesses can also be seen in figures 1b and 1c.
  • the pipe section 1 is provided into a device 6 according to Figs. 2a and 2b together with the mandrel 5 which runs through the opening 4 of the pipe section 1.
  • the mandrel 5 is connected to two supports 7 being arranged at distant ends of the mandrel 5 so that the pipe section 1 is provided between the two supports 7.
  • the pipe section 1 is rotated by a first drive (not shown) in a direction according to arrows 8 in Fig. 2b.
  • the device 6 can a separate device or it could be the pipe section production machine itself.
  • a blade 9 for removing mineral fibers from the outer surface 3 of the body is arranged between the two supports 7 whereby the blade 9 is movable to and from the pipe section 1.
  • the distance between the blade 9 and the pipe section 1 can be preadjusted so that the blade 9 can only be moved in the direction to the pipe section 1 until the blade 9 reaches the distance holders 10.
  • the distance holders 10 achieve that the blade 9 is arranged exactly parallel to the longitudinal axis of the mandrel 5 and therefore with respect to the pipe section 1.
  • the movement of the blade 9 to and from the outer surface 3 of the pipe section 1 is achieved by using a second drive (not shown). Furthermore the blade 9 can be operated in an endless loop (not shown). In this embodiment the blade 9 can run through a not shown grinding device which covers a part of the loop through which the blade 9 is running. In this embodiment the blade 9 can be moved constantly through the loop or in intervals.

Abstract

La présente invention concerne un procédé de production d'une section de tuyau (1) pour isolation thermique, acoustique et/ou coupe-feu, comprenant un corps (2) constitué de laine minérale et pourvu d'un axe longitudinal et d'une section transversale circulaire, une surface extérieure (3) et une ouverture intérieure (4) étant disposées de manière centrée dans le corps (2) et s'étendant à travers l'ensemble du corps (2). La surface extérieure (3) est mise en contact avec un dispositif de coupe (11) ayant une longueur au moins égale à la longueur du corps (2) et disposé parallèlement à l'axe longitudinal, moyennant quoi la section de tuyau (1) est mise en rotation sur au moins 360° par rapport au dispositif de coupe (11), ce qui permet d'éliminer la laine minérale disposée à l'extérieur d'une distance radiale prédéfinie par rapport à l'axe longitudinal.
PCT/EP2018/066048 2017-07-12 2018-06-18 Procédé et dispositif de production d'une section de tuyau pour isolation thermique WO2019011587A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17180998 2017-07-12
EP17180998.1 2017-07-12

Publications (1)

Publication Number Publication Date
WO2019011587A1 true WO2019011587A1 (fr) 2019-01-17

Family

ID=59337512

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/066048 WO2019011587A1 (fr) 2017-07-12 2018-06-18 Procédé et dispositif de production d'une section de tuyau pour isolation thermique

Country Status (1)

Country Link
WO (1) WO2019011587A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085548A (en) 1976-02-21 1978-04-25 Newalls Insulation Company Limited Apparatus for manufacture of insulation products
JPS5987130A (ja) * 1982-11-12 1984-05-19 Nippon Sheet Glass Co Ltd グラスウ−ル筒状体の製造法
AT501770A1 (de) * 2005-04-07 2006-11-15 Michel Wolfgang Ing Verfahren zur herstellung von flächenförmigen formkörpern aus fluorpolymeren und verwendung dieser formkörper
KR101191773B1 (ko) * 2012-05-25 2012-10-16 (주)에이엘베스트 파이프 탈피장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085548A (en) 1976-02-21 1978-04-25 Newalls Insulation Company Limited Apparatus for manufacture of insulation products
JPS5987130A (ja) * 1982-11-12 1984-05-19 Nippon Sheet Glass Co Ltd グラスウ−ル筒状体の製造法
AT501770A1 (de) * 2005-04-07 2006-11-15 Michel Wolfgang Ing Verfahren zur herstellung von flächenförmigen formkörpern aus fluorpolymeren und verwendung dieser formkörper
KR101191773B1 (ko) * 2012-05-25 2012-10-16 (주)에이엘베스트 파이프 탈피장치

Similar Documents

Publication Publication Date Title
US2350996A (en) Method of forming pipe coverings
US20210187771A1 (en) Method and apparatus for cutting a pipe made from thermoplastic material
KR102002688B1 (ko) 연속식 섬유 강화 파이프의 제조 장치
US11428361B2 (en) Pipe insulation and method of and system for making same
KR101676726B1 (ko) 균일한 프리프레그의 제조 시스템
US3498862A (en) Method and apparatus for making tubular fibrous insulating material
US3147165A (en) Method of manufacturing pipe insulation
US2937436A (en) Method for forming glass reinforced metal tubing
JP5139864B2 (ja) 繊維帯の巻着方法及びその装置
WO2019011587A1 (fr) Procédé et dispositif de production d'une section de tuyau pour isolation thermique
US4085548A (en) Apparatus for manufacture of insulation products
DE1704713A1 (de) Verfahren und Vorrichtung zur Herstellung von Roehren aus geschaeumtem Plastikmaterial
SE9603918D0 (sv) Förfarande och anordning för tillverkning av målarrullar
EP1924422B1 (fr) Appareil et procede pour produire en continu une section de conduite en laine minerale utilisee dans des applications d'isolation
US3406231A (en) Method for production of tubular fibrous bodies
US3912572A (en) Method of and apparatus for forming articles of fibrous materials
US4160398A (en) Method and apparatus for manufacture of insulating sleeves
US2354062A (en) Method of making belts
CS248002B2 (en) Method and apparatus for continuous production of the fibre pipes
US4153498A (en) Method and apparatus for manufacture of insulating sleeves
JP3497137B2 (ja) 供給アーム
EP2993028B1 (fr) Agencement et procédé de fabrication d'une section d'isolation de tuyaux en laine minérale et section d'isolation de tuyaux
US3055278A (en) Reinforced plastic pipe
JP2019123119A (ja) タイヤ用モールドの洗浄方法
JPS5987130A (ja) グラスウ−ル筒状体の製造法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18730003

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18730003

Country of ref document: EP

Kind code of ref document: A1