WO1992009420A1 - Process and apparatus for applying a plastics enclosure to surfaces that are to be protected - Google Patents

Process and apparatus for applying a plastics enclosure to surfaces that are to be protected Download PDF

Info

Publication number
WO1992009420A1
WO1992009420A1 PCT/GB1991/002095 GB9102095W WO9209420A1 WO 1992009420 A1 WO1992009420 A1 WO 1992009420A1 GB 9102095 W GB9102095 W GB 9102095W WO 9209420 A1 WO9209420 A1 WO 9209420A1
Authority
WO
WIPO (PCT)
Prior art keywords
article
enclosed
semi finished
polymeric
polymeric part
Prior art date
Application number
PCT/GB1991/002095
Other languages
English (en)
French (fr)
Inventor
Horst Hoffmann
Original Assignee
Walter Rose Gmbh & Co Kg
Raychem Limited
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 Walter Rose Gmbh & Co Kg, Raychem Limited filed Critical Walter Rose Gmbh & Co Kg
Priority to KR1019930701583A priority Critical patent/KR930702143A/ko
Publication of WO1992009420A1 publication Critical patent/WO1992009420A1/en

Links

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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/70—Completely encapsulating inserts
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/72—Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
    • H02G1/145—Moulds
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B29C2043/181—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles encapsulated
    • B29C2043/182—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles encapsulated completely
    • 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
    • B29C35/16—Cooling
    • 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
    • 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
    • B29C48/07—Flat, e.g. panels
    • 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

Definitions

  • the invention relates to a process and an apparatus for applying a plastics enclosure to surfaces of articles that are to be protected, especially for applying plastics enclosures to a metal housing.
  • DE 3127869 describes a method of producing a connection and/or branch between coaxial cables using a kit comprising a metal housing containing an electronics plate, and a heat shrinkable polymeric sleeve enclosing the housing.
  • the housing is provided with cable entries to receive the cables to be connected and/or branched, and these cable entries are connected to the electronics plate.
  • the heat shrinkable sleeve is provided in two halves having corresponding cable entry pipes, the two halves are pre-shrunk over the housing at the factory, and the resulting branch set can then be delivered to the building site.
  • a first aspect of the invention provides a process for applying a polymeric enclosure to surfaces of articles that are to be protected, comprising
  • a second aspect of the invention provides an apparatus suitable for carrying out the process according to the first aspect of the invention, comprising
  • a semi finished polymeric part extruder (a) a semi finished polymeric part extruder, a holder for the article or articles to be enclosed and a tool holder containing moulding presses for pressing against the semi finished polymeric part which moulding presses can be moved from an opening state in which the semi finished polymeric part can be inserted around the article to be enclosed and within the moulding presses, to a closed state in which the moulding process urge the semi finished part against the article to be enclosed .
  • the invention has a number of advantages over known procedures. Since the semi- finished polymeric part that surrounds the article to be enclosed is still in a deformable state, it is possible to enclose and protect not only regularly shaped articles, but also articles having comparatively complicated outer contours in a simple manner. Also the - 4 -
  • process can be carried out virtually continuously, which means, in particular, that it can be carried out very economically.
  • a process for the manufacture of an insulated connection between electrical conductors with a thermoplastic plastics foil in which inter alia a thermoplastic plastics tube is pushed over the connected conductors upstream of the connection, is known from DE-OS 16 46 408.
  • the connection site is coated with a plastics paste and the plastics screw tube is pushed over the corresponding site including the plastics insulation and the entire assembly is then welded to form a homogeneous body with the aid of a kind of waffle iron. It will be appreciated that this procedure is very complicated. Also, it does not employ semi-finished parts in their deformable state, nor is it suitable for continuous operation.
  • the semi-finished polymeric part is in the form of a double strip of polymeric material or in the form of a slit polymeric tube.
  • the wall thickness of the strip or tube may or may not vary in cross-section.
  • the article to be enclosed is, for example, a cable entry pipe into a housing, eg for connection or branching of coaxial cable leads via an electronics plate or similar within the housing, the tips of the cable entries can be provided with an accumulation of material in order to render possible a higher tensile strength or the like when the cable leads or the like have been inserted.
  • a moulding process is used to urge the semi finished part against the article.
  • the moulding involves the application of pressing tools against the semi finished polymeric part towards the article to be - o
  • the inner surface of the pressing tools may be arranged to correspond generally with that of the outer surface of the article to be enclosed.
  • compressed air may be applied to the semi ⁇ finished polymeric part to apply, or to enhance application of the part around the article to be enclosed.
  • the compressed air may be used in addition to cooling air applied to the semi-finished polymeric part.
  • air may be withdrawn from within the article to be enclosed, thereby applying a drawing pressure on the polymeric part, to apply or to enhance application of the part.
  • a combination of compressed air applied to the outer surface, and drawing pressure may also be used.
  • Blow moulding equipment may be used in the above embodiment of the present invention, which may be considered as an 'inside-out' blow moulding process.
  • the invention provides as well as a method, an apparatus as set out above in accordance with the second aspect of the invention.
  • the tool holder is advantageously constructed to be displaceable together with the article holder so that the article can be brought into the extrusion path of the semi-finished polymeric part.
  • the holder for the article to be enclosed is equipped with a suction channel.
  • This channel can be used for at least partially evacuating air from the region of the article to be enclosed.
  • This apparatus makes it possible to produce, at least temporarily, a slight vacuum in the interior of the article to be enclosed, which assists the application of the outer plastics enclosure.
  • the pressing tools can be equipped at their surfaces, facing - 4 -
  • a process for the manufacture of an insulated connection between electrical conductors with a thermoplastic plastics foil in which inter alia a thermoplastic plastics tube is pushed over the connected conductors upstream of the connection, is known from DE-OS 16 46 408.
  • the connection site is coated with a plastics paste and the plastics screw tube is pushed over the corresponding site including the plastics insulation and the entire assembly is then welded to form a homogeneous body with the aid of a kind of waffle iron. It will be appreciated that this procedure is very complicated. Also, it does not employ semi-finished parts in their deformable state, nor is it suitable for continuous operation.
  • the semi-finished polymeric part is in the form of a double strip of polymeric material or in the form of a slit polymeric tube.
  • the wall thickness of the strip or tube may or may not vary in cross-section.
  • the article to be enclosed is, for example, a cable entry pipe into a housing, eg for connection or branching of coaxial cable leads via an electronics plate or similar within the housing, the tips of the cable entries can be provided with an accumulation of material in order to render possible a higher tensile strength or the like when the cable leads or the like have been inserted.
  • a moulding process is used to urge the semi finished part against the article.
  • the moulding involves the application of pressing tools against the semi finished polymeric part towards the article to be - 7 -
  • the tool holder 1 is then moved back to the left in the direction of the arrow 10 ( Figure 1C), the moulding tools 2a, 2b are subsequently opened according to the double arrow 11, and the holding rod 4 is withdrawn to the left according to arrow 12, so that the finished enclosed article 5, which is then designated 5' in Figure ID, can be removed or ejected.
  • the sequence of steps according to Figures 1A to ID can then be repeated on other parts.
  • the article holder 3 may be constructed in a different manner.
  • it may be designed as a revolving holder, i.e. by rotating, it can in one operating process remove one article already enclosed and introduce the next article 5 that is to be enclosed.
  • the described embodiment can, of course, be further modified in various respects.
  • the semi-finished polymeric part 7 may be in the form of a closed tube or a tube that is open at one side and so on.
  • the insides of the moulding tools 2 can be loaded with compressed air.
  • air can be sucked out of the interior of the article being enclosed via he holder 4.
  • Other methods of assisting moulding can also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
PCT/GB1991/002095 1990-11-27 1991-11-27 Process and apparatus for applying a plastics enclosure to surfaces that are to be protected WO1992009420A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930701583A KR930702143A (ko) 1990-11-27 1991-11-27 보호하려는 표면을 플라스틱 엔클로우져로 감싸기 위한 방법 및 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4037675A DE4037675A1 (de) 1990-11-27 1990-11-27 Verfahren und vorrichtung zum aufbringen einer kunststoffumhuellung auf zu schuetzende oberflaechen
DEP4037675.3 1990-11-27

Publications (1)

Publication Number Publication Date
WO1992009420A1 true WO1992009420A1 (en) 1992-06-11

Family

ID=6418992

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/002095 WO1992009420A1 (en) 1990-11-27 1991-11-27 Process and apparatus for applying a plastics enclosure to surfaces that are to be protected

Country Status (4)

Country Link
EP (1) EP0563061A1 (enrdf_load_html_response)
KR (1) KR930702143A (enrdf_load_html_response)
DE (2) DE4037675A1 (enrdf_load_html_response)
WO (1) WO1992009420A1 (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005099997A1 (en) * 2004-04-16 2005-10-27 France (Qld) Pty Ltd Vacuum form encapsulated articles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2253563T3 (es) * 2001-06-01 2006-06-01 Meridian Automotive Systems, Inc. Panel sandwich termoplastico y metodo de moldeado de doble lamina para obtenerlo.
CN110299680B (zh) * 2019-03-19 2020-10-23 国网上海市电力公司 一种输变电线路安装维护装置

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE1921788A1 (de) * 1969-04-29 1971-02-04 Gruenzweig & Hartmann Verfahren zur Herstellung von mit Metalleinlagen versehenen Kunststoffprofilen
FR2246368A1 (enrdf_load_html_response) * 1973-10-04 1975-05-02 Philips Nv
FR2287995A1 (fr) * 1974-10-17 1976-05-14 Ici Ltd Procede pour revetir un substrat au moyen d'une matiere thermoplastique
US4148856A (en) * 1974-08-16 1979-04-10 Corning Glass Works Method for continuous component encapsulation
US4436478A (en) * 1981-07-27 1984-03-13 The West Company Apparatus for making molded articles

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DE434141C (de) * 1925-05-26 1926-09-16 Felten & Guilleaume Carlswerk Muffe fuer Tiefseekabel
DE756979C (de) * 1937-05-14 1954-04-29 Aeg Kabelarmaturen und -zubehoerteile
DE910178C (de) * 1944-03-28 1954-04-29 Aeg Verfahren zur Abdichtung der Spleissstellen von insbesondere kunststoffummantelten Kabeln
DE972059C (de) * 1952-06-04 1959-05-14 Osnabruecker Kupfer Und Drahtw Gewellte Rohre, armierte Leitungen und Kabel sowie Kabel mit gewelltem Mantel und Verfahren zur Herstellung von Schutzhuellen dafuer
DE1005150B (de) * 1952-11-05 1957-03-28 Siemens Ag Verfahren zur Herstellung von Kabelgarnituren
DE962719C (de) * 1953-10-08 1957-04-25 Huels Chemische Werke Ag Mit thermoplastischen Kunststoffen nahtlos ummantelte gestreckte Formgebilde
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1921788A1 (de) * 1969-04-29 1971-02-04 Gruenzweig & Hartmann Verfahren zur Herstellung von mit Metalleinlagen versehenen Kunststoffprofilen
FR2246368A1 (enrdf_load_html_response) * 1973-10-04 1975-05-02 Philips Nv
US4148856A (en) * 1974-08-16 1979-04-10 Corning Glass Works Method for continuous component encapsulation
FR2287995A1 (fr) * 1974-10-17 1976-05-14 Ici Ltd Procede pour revetir un substrat au moyen d'une matiere thermoplastique
US4436478A (en) * 1981-07-27 1984-03-13 The West Company Apparatus for making molded articles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN ; vol. 12, no. 222 (M-712)(3069) 24 June 1988 ; & JP,A,63 019 215 ( JAPAN STEEL WORKS LTD ) 27 January 1988 see abstract *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005099997A1 (en) * 2004-04-16 2005-10-27 France (Qld) Pty Ltd Vacuum form encapsulated articles

Also Published As

Publication number Publication date
DE4037675A1 (de) 1992-06-11
KR930702143A (ko) 1993-09-08
EP0563061A1 (en) 1993-10-06
DE4037675C2 (enrdf_load_html_response) 1993-01-21
DE9017905U1 (de) 1992-11-05

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