FR2620647A1 - Method of installing a sealing sleeve made of thermoplastic material onto a mechanical component - Google Patents
Method of installing a sealing sleeve made of thermoplastic material onto a mechanical component Download PDFInfo
- Publication number
- FR2620647A1 FR2620647A1 FR8712907A FR8712907A FR2620647A1 FR 2620647 A1 FR2620647 A1 FR 2620647A1 FR 8712907 A FR8712907 A FR 8712907A FR 8712907 A FR8712907 A FR 8712907A FR 2620647 A1 FR2620647 A1 FR 2620647A1
- Authority
- FR
- France
- Prior art keywords
- sheath
- dimensions
- mechanical member
- deformation
- sheath portion
- 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.)
- Granted
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
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- 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
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/42—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings
-
- 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
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/46—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses of internal surfaces
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
- B29C66/53241—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being tubular and said substantially annular single elements being of finite length relative to the infinite length of said tubular articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gasket Seals (AREA)
Abstract
Description
La présente invention a pour objet un procédé de mise en place d une gaine en matériau thermoplastique dont une portion coopère élastiquement avec une surface de section générale circulaire d un organe mécanique dont on désire assurer 1 étanchéité et/ou pour immobiliser cette gaine en position par rapport à l'organe mécanique. The subject of the present invention is a method of fitting a sheath made of thermoplastic material, a portion of which cooperates elastically with a surface of generally circular section of a mechanical member of which it is desired to provide 1 seal and / or to immobilize this sheath in position by relation to the mechanical organ.
L'invention trouve plus particulièrement son application dans le domaine des joints de transmission mécanique dans lesquels des gaines d'étanchéité. de forme générale tubulaire protègent les éléments fonctionnels des joints de transmission, notamment en en assurant une parfaite lubrification à laide d'un agent de lubrification, tel que de la graisse, qui est enfermé dans la gaine de protection. The invention finds more particularly its application in the field of mechanical transmission seals in which sealing sheaths. of generally tubular shape protect the functional elements of the transmission joints, in particular by ensuring perfect lubrication thereof using a lubricating agent, such as grease, which is enclosed in the protective sheath.
Les gaines utilisées pour la protection de tels joints de transmission sont actuellement mises en place par déformation élastique, d'au moins des portions d extrémités de la gaine qui, dans la position de montage. coopèrent avec des surfaces en vis à vis de 1 organe mécanique. Une parfaite lubrification des composants du joint ne peut être assurée avec fiabilité que si 1 espace délimité par la gaine d étanchéité est parfaitement rempli de graisse. Les techniques de montage utilisées habituellement ne permettent que assurer imparfaitement le remplissage de la gaine ou l'endommagent, par exemple du fait de l'introduction à force dune canule de graissage entre la gaine et 1 organe mécanique. The sheaths used for the protection of such transmission joints are currently in place by elastic deformation of at least end portions of the sheath which, in the mounting position. cooperate with facing surfaces of 1 mechanical member. Perfect lubrication of the seal components can only be guaranteed reliably if the space delimited by the sealing sheath is perfectly filled with grease. The mounting techniques usually used only imperfectly ensure filling of the sheath or damage it, for example due to the forced introduction of a lubricating cannula between the sheath and 1 mechanical member.
Afin de remédier aux inconvénients qui viennent d être mentionnés, 1 invention propose un procédé de mise en place caractérisé en ce qu'il comporte les étapes suivantes
A) chauffage de la portion de gaine à sa température de déformation plastique
B)- déformation géométrique par plasticité de la portion de gaine pour lui conférer des dimensions de montage mémorisées par le matériau
C) refroidissement de la portion de gaine déformée à la température ambiante
D) mise en place de la gaine sur l'organe mécanique
E) chauffage de la portion de gaine déformée sa température de déformation plastique pour provoquer le retour automatique de cette portion de gaine à des dimensions proches de ses dimensions avant déformation ; et
F) refroidissement de la portion de gaine à la température ambiante.In order to remedy the drawbacks which have just been mentioned, 1 invention proposes an installation method characterized in that it comprises the following steps
A) heating of the sheath portion to its plastic deformation temperature
B) - geometric deformation by plasticity of the sheath portion to give it mounting dimensions memorized by the material
C) cooling of the deformed sheath portion to room temperature
D) installation of the sheath on the mechanical member
E) heating the deformed sheath portion to its plastic deformation temperature to cause the automatic return of this sheath portion to dimensions close to its dimensions before deformation; and
F) cooling of the sheath portion to room temperature.
Grâce au phénomène de mémorisation des dimensions de montage obtenues par déformation par plas ticité de la portion de gaine, il est possible de réaliser un montage très aisé de la gaine sur l'organe mécanique ainsi qu'un remplissage complet par de la graisse de lubrification de l'espace interne délimité par la gaine. Une simple opération de chauffage de la portion de gaine déformée provoque le retour de celleci à ses dimensions initiales ainsi qu'un emprisonnement de la quantité de graisse préalablement disposée à l'intérieur de la gaine. Une fois revenue à la température ambiante la gaine mise en place coopère élas tiquement avec l'organe mécanique dont elle assure une parfaite protection ainsi qu'une étanchéité dont les qualités sont identiques à celles des gaines montées par les techniques connues. Thanks to the phenomenon of memorizing the mounting dimensions obtained by plastic deformation of the sheath portion, it is possible to very easily mount the sheath on the mechanical member as well as complete filling with lubricating grease. of the internal space delimited by the sheath. A simple heating operation of the deformed sheath portion causes it to return to its initial dimensions as well as a trapping of the quantity of grease previously disposed inside the sheath. Once returned to ambient temperature, the sheath put in place cooperates elastically with the mechanical member, of which it provides perfect protection as well as sealing, the qualities of which are identical to those of the sheaths mounted by known techniques.
Dans le cas où la portion de gaine est de forme tubulaire et enserre élastiquement une zone cir culaire externe de l'organe mécanique, l'étape de déformation géométrique consiste à conférer à la portion de gaine tubulaire un diamètre intérieur plus grand que le diamètre extérieur de la zone circulaire.D'une manière symétrique, lorsque la portion coopère élastiquement avec une zone circulaire interne de l'organe mécanique, on confère à la portion de gaine un diame- tre extérieur plus petit que le diamètre intérieur de la zone circulaire lors de l'étape de déformation géométrique,
D'autres caractéristiques et avantages de l'invention apparaitront à la lecture de la description détaillée de l'invention qui va suivre pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels
- La figure la est une demi-vue en coupe partielle d'une partie d'une gaine de matériau plastique dont on veut assurer la mise en place sur une zone circulaire externe d'un organe mécanique, non repré senté, grace au procédé selon l'invention
- la figure 2a est une vue similaire à celle de la figure la représentant la partie de gaine après déformation géométrique par chauffage de sa portion de montage
- la figure 3a est une vue représentant la partie de gaine dans son état déformé et au cours de son opération de mise en place sur l'organe mécanique dont on veut assurer l'étanchéité
- la figure 4a est une vue similaire à celle de la figure 3a représentant la partie de gaine à l'issue de la seconde opération de chauffage
- les figures lb à 4b sont des vues similaires à celles des figures la à 4a représentant les dif férentes étapes de mise en place d'une partie d'une gaine tubulaire qui coopère avec une zone cylindrique interne d un organe mécanique ; et
- la figure 5 est un diagramme double représentant les variations de diamètre et de température de la portion de montage de la gaine, au cours des différentes étapes du procédé de mise en place.In the case where the sheath portion is of tubular shape and elastically encloses an external circular area of the mechanical member, the step of geometric deformation consists in conferring on the portion of tubular sheath an inner diameter greater than the outer diameter of the circular area. Symmetrically, when the portion cooperates elastically with an internal circular area of the mechanical member, the sheath portion is given an outer diameter smaller than the inside diameter of the circular area during of the geometric deformation step,
Other characteristics and advantages of the invention will appear on reading the detailed description of the invention which will follow for the understanding of which reference will be made to the appended drawings in which
- Figure la is a partial sectional half-view of part of a plastic sheath which we want to ensure the establishment on an external circular area of a mechanical member, not shown, thanks to the process according to the invention
- Figure 2a is a view similar to that of Figure showing the sheath part after geometric deformation by heating of its mounting portion
- Figure 3a is a view showing the sheath part in its deformed state and during its positioning operation on the mechanical member which is to be sealed
- Figure 4a is a view similar to that of Figure 3a showing the sheath part at the end of the second heating operation
- Figures 1b to 4b are views similar to those of Figures la to 4a showing the dif ferent steps of setting up part of a tubular sheath which cooperates with an internal cylindrical area of a mechanical member; and
- Figure 5 is a double diagram showing the variations in diameter and temperature of the mounting portion of the sheath, during the various stages of the positioning process.
On a représenté aux figures la à 4a une partie d'une gaine 10 en matériau thermoplastique qui est prévue pour assurer l'étanchéité d'un organe mécanique dont une portion 12 est illustrée aux figures 3a et 4a. There is shown in Figures la to 4a a portion of a sheath 10 of thermoplastic material which is provided for sealing a mechanical member, a portion 12 is illustrated in Figures 3a and 4a.
Dans ce mode de réalisation la gaine d'étant chéité 10 est une gaine extérieure dont une portion de montage et de fixation de forme tubulaire 14 coopère élastiquement, lorsqu'elle est en place, avec une zone cylindrique externe 16 de l'organe mécanique 12 de section sensiblement circulaire. In this embodiment, the sheath being sheathed 10 is an outer sheath of which a mounting and fixing portion of tubular shape 14 cooperates elastically, when it is in place, with an external cylindrical zone 16 of the mechanical member 12 of substantially circular section.
A la figure la le diamètre interne Do est le
0 diamètre interne initial de la portion de gaine 14, à la température ambiante, et qui résulte d'un procédé classique de fabrication d'une gaine d'étanchéité en matériau thermoplastique.In the figure the internal diameter Do is
0 initial internal diameter of the sheath portion 14, at ambient temperature, and which results from a conventional process for manufacturing a sealing sheath made of thermoplastic material.
A la figure 2a le diamètre interne DO, représenté en pointillés, de la portion de gaine 14 a été augmenté, par déformation géométrique par plasticité, à un diamètre interne D2 supérieur au diamètre
Do de façon qu'il existe à température ambiante un écart e = D2-Do entre ces deux diamètres. In FIG. 2a the internal diameter DO, shown in dotted lines, of the sheath portion 14 has been increased, by geometric deformation by plasticity, to an internal diameter D2 greater than the diameter
Do so that there is a difference at room temperature e = D2-Do between these two diameters.
Comme on peut le constater à la figure 3a, l'écart "e" permet d'effectuer le montage de la gaine d'étanchéité 10, en introduisant l'organe mécanique 12 à l'intérieur de la portion de gaine 14 de diamètre interne D2. Au cours de cette étape de mise en place et de montage, on peut introduire, sans endommager la portion de gaine 14, une canule de graissage 18 en vue d'assurer un parfait remplissage de la zone interne délimitée par la gaine d'étanchéité et à l'intérieur de laquelle sont situés les composants de l'organe mécanique dont on désire assurer une parfaite lubrification. As can be seen in FIG. 3a, the difference "e" makes it possible to mount the sealing sheath 10, by introducing the mechanical member 12 inside the sheath portion 14 of internal diameter D2. During this positioning and mounting step, one can introduce, without damaging the sheath portion 14, a lubricating cannula 18 in order to ensure perfect filling of the internal zone delimited by the sealing sheath and inside of which are located the components of the mechanical member for which perfect lubrication is desired.
A la figure 4a, la portion de gaine 14 est représentée après sa mise en place sur 1 organe 12. In FIG. 4a, the sheath portion 14 is shown after it has been put in place on one member 12.
Son retour à un diamètre interne D3 proche de son diamètre initial Do assure son maintien en position par coopération élastique avec la zone cylindrique 16 de l'organe mécanique 12, Son maintien axial par rapport à l'organe méca nique 12 peut, par exemple, etre obtenu grace à une gorge radiale interne 20 formée dans la zone cylindrique 16 et dans laquelle pénètre une portion en vis à vis 22 de la portion de gaine 14 lors de son retour automatique à ses dimensions initiales, grâce à la différence de diamètre entre O et
L'immobilisation en rotation de la portion de gaine 14, par rapport à l'organe mécanique 12, peut étre assurée au moyen de cannelures 24 formées sur la surface de ce dernier au voisinage de la gorge 20 et du coté de cette dernière situé à l'extérieur de la gaine.Its return to an internal diameter D3 close to its initial diameter Do ensures that it is held in position by elastic cooperation with the cylindrical zone 16 of the mechanical member 12, Its axial retention relative to the mechanical member 12 can, for example, be obtained by means of an internal radial groove 20 formed in the cylindrical zone 16 and into which a facing portion 22 of the sheath portion 14 penetrates when it automatically returns to its initial dimensions, thanks to the difference in diameter between O and
Immobilization in rotation of the sheath portion 14, relative to the mechanical member 12, can be ensured by means of grooves 24 formed on the surface of the latter in the vicinity of the groove 20 and on the side of the latter located at the outside of the sheath.
On a représenté aux figures lb à 4b les dif férents états qu'occupe une partie d'une gaine d'étanchéité 10 qui est également de forme tubulaire mais qui, lorsqu'elle est en place, coopère avec une zone cylindrique interne 16 d'un organe mécanique 12. Les mêmes chiffres de référence désignent des éléments similaires ou équivalents à ceux des figures la à 4a, le diamètre externe déformé De 2de la portion de gaine 14 étant ici bien entendu plus petit que le diamètre externe initial Do de cette portion de gaine 14. FIGS. 1b to 4b show the different states occupied by part of a sealing sheath 10 which is also tubular in shape but which, when in place, cooperates with an internal cylindrical zone 16 of a mechanical member 12. The same reference numerals designate elements similar or equivalent to those of FIGS. 1a to 4a, the deformed external diameter De 2 of the sheath portion 14 here being of course smaller than the initial external diameter Do of this portion sheath 14.
On décrira maintenant les différentes étapes du procédé de mise en place selon l'invention en se référant à la figure 5. We will now describe the different steps of the implementation process according to the invention with reference to FIG. 5.
A l'état initial, allant de t0 a' t 1' la por- tion de gaine 14 possède, à la température ambiante Ta, un diamètre initial
a
Au temps tl on chauffe la portion de gaine 14 à sa température de déformation plastique T1.In the initial state, going from t0 to 't 1' the portion of sheath 14 has, at ambient temperature Ta, an initial diameter
at
At time tl, the sheath portion 14 is heated to its plastic deformation temperature T1.
Dans l'intervalle de temps allant de tl à t2 on déforme géométriquement par plasticité la portion de gaine 14 pour lui conférer des dimensions de montage mémorisées par le matériau thermoplastique qui la constitue. Ces dimensions de montage sont caractéri sées, dans le cas du montage d'une gaine extérieure telle que représentée aux figures la à 4a, par un diamètre interne D2 plus grand que le diamètre initial
2 0o
Dans l'intervalle de temps allant de t2 à t3, on refroidit de la portion de gaine 14 déformée, jusqu à la température ambiante Ta.Comme on peut le
a constater à la figure 5, ce refroidissement provoque une légère réduction du diamètre interne de la portion de gaine 14 depuis le diamètre de déformation géométrique initiale D1 jusqu'au diamètre interne de montage 02. ce dernier restant mémorisé à la température ambiante à l'instant t3.In the time interval from tl to t2, the sheath portion 14 is geometrically deformed by plasticity to give it mounting dimensions memorized by the thermoplastic material which constitutes it. These mounting dimensions are characterized, in the case of mounting an outer sheath as shown in Figures la to 4a, by an internal diameter D2 larger than the initial diameter
2 0o
In the time interval from t2 to t3, the deformed sheath portion 14 is cooled down to ambient temperature Ta.
Note in FIG. 5, this cooling causes a slight reduction in the internal diameter of the sheath portion 14 from the initial geometric deformation diameter D1 to the internal mounting diameter 02. the latter remaining stored at room temperature at instant t3.
La mise en place de la gaine 10 sur l'organe mécanique 12 s'effectue dans un intervalle de temps allant de t3 à t4 et à la température ambiante T
3 4 a
Afin de provoquer le retour automatique de la portion de gaine 14 à des dimensions proches de ses dimensions initiales avant déformation géométrique. on chauffe à nouveau la portion de gaine déformée à une température T2, très proche de la première température# de chauffage T1, à laquelle le diamètre interne r vient de lui-même à un diamètre interne D3 proche de son diamètre initial
La portion de gaine 14 étant ainsi mise en place il ne reste plus qu'à refroidir, au cours de l'intervalle de temps allant de t5 à t6. la portion 14 depuis sa température de déformation plastique T2 à la température ambiante T
a
Le chauffage de la portion de gaine 14 peut être réalisé de manière locale par convexion, conduction, ou au moyen d'un champ magnétique à très haute fréquence.The establishment of the sheath 10 on the mechanical member 12 takes place in a time interval ranging from t3 to t4 and at ambient temperature T
3 4 a
In order to cause the automatic return of the sheath portion 14 to dimensions close to its initial dimensions before geometric deformation. the deformed sheath portion is again heated to a temperature T2, very close to the first heating temperature # T1, at which the internal diameter r comes by itself to an internal diameter D3 close to its initial diameter
The sheath portion 14 thus being put in place, all that remains is to cool, during the time interval going from t5 to t6. the portion 14 from its plastic deformation temperature T2 at ambient temperature T
at
The sheath portion 14 can be heated locally by convection, conduction, or by means of a very high frequency magnetic field.
La gaine en matériau thermoplastique peut par exemple être réalisée dans un polyester élastomère commercialisé sous la marque "Hytrel" par la Société
DU PONT (U.K.) LIMITED. Des essais menés à titre expérimental avec une gaine réalisée dans ce matériau ont montré qu'il était possible d'effectuer très aisément la mise en place d'une gaine dont le diamètre interne initial Do de 27 millimètres est déformé jusqu'# atteindre un diamètre #D2 de mise en place de 35 millimètres par chauffage à une température de déformation plastique d environ 165 C. A l'issue de la seconde étape de chauffage on observe un retour automatique à un diamètre final D3 de 30 millimètres soit un phénomène de contraction d'environ 16 7, du diamètre D2 ; les intervalles de temps t1 - t2 et t4 - t5 étant égaux å environ 5 minutes. The sheath made of thermoplastic material may for example be made of an elastomeric polyester sold under the brand "Hytrel" by the Company
DU PONT (UK) LIMITED. Tests carried out on an experimental basis with a sheath made of this material have shown that it is possible to very easily carry out the installation of a sheath whose initial internal diameter Do of 27 millimeters is deformed until # reach a diameter # D2 setting up 35 millimeters by heating to a plastic deformation temperature of around 165 C. At the end of the second heating step, an automatic return to a final diameter D3 of 30 millimeters is observed, ie a phenomenon of contraction about 16 7, of diameter D2; the time intervals t1 - t2 and t4 - t5 being equal to approximately 5 minutes.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8712907A FR2620647B1 (en) | 1987-09-17 | 1987-09-17 | PROCESS FOR PLACING A SEALING SHEATH IN THERMOPLASTIC MATERIAL ON A MECHANICAL MEMBER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8712907A FR2620647B1 (en) | 1987-09-17 | 1987-09-17 | PROCESS FOR PLACING A SEALING SHEATH IN THERMOPLASTIC MATERIAL ON A MECHANICAL MEMBER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2620647A1 true FR2620647A1 (en) | 1989-03-24 |
| FR2620647B1 FR2620647B1 (en) | 1990-03-23 |
Family
ID=9354997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8712907A Expired - Lifetime FR2620647B1 (en) | 1987-09-17 | 1987-09-17 | PROCESS FOR PLACING A SEALING SHEATH IN THERMOPLASTIC MATERIAL ON A MECHANICAL MEMBER |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2620647B1 (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR773954A (en) * | 1933-03-03 | 1934-11-28 | Nat Carbon Co | Process for manufacturing articles with plastic compositions, and resulting products |
| GB652054A (en) * | 1948-03-25 | 1951-04-18 | British Mechanical Prod Ltd | A new or improved method of securing two interfitting parts together and/or of obtaining a seal between two interfitting connected parts |
| GB701436A (en) * | 1950-03-17 | 1953-12-23 | Hagen Norbert | Methods of coating or lining articles with a layer of polyvinyl chloride or like synthetic thermoplastic substance |
| GB1116878A (en) * | 1964-08-10 | 1968-06-12 | Raychem Corp | Heat recoverable article |
| DE1479670A1 (en) * | 1964-01-27 | 1969-07-10 | Siemens Ag | Welded connection for tubular, thermoplastic plastic parts |
| US3539411A (en) * | 1964-08-21 | 1970-11-10 | Raychem Corp | Process for protectively covering substrate articles |
| FR2232423A1 (en) * | 1973-06-08 | 1975-01-03 | Pont A Mousson | |
| FR2252191A1 (en) * | 1973-11-27 | 1975-06-20 | Atomenergi Ab | |
| US3929538A (en) * | 1974-06-14 | 1975-12-30 | Clow Corp | Method of assembling a thermoplastic sleeve onto a pipe or the like |
| JPS5490370A (en) * | 1977-12-28 | 1979-07-18 | Mitsubishi Electric Corp | Method of forming flexible shaft coupling |
| FR2503622A1 (en) * | 1981-04-13 | 1982-10-15 | Laurent Jacques | PROCESS FOR INTERIORALLY PUTTING PIPES AND TUBE FOR ITS IMPLEMENTATION |
| JPS6023025A (en) * | 1983-06-15 | 1985-02-05 | Molten Corp | Fixing method of rubber part |
| GB2148537A (en) * | 1983-10-13 | 1985-05-30 | Bicc Plc | Optical fibre splicing |
-
1987
- 1987-09-17 FR FR8712907A patent/FR2620647B1/en not_active Expired - Lifetime
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR773954A (en) * | 1933-03-03 | 1934-11-28 | Nat Carbon Co | Process for manufacturing articles with plastic compositions, and resulting products |
| GB652054A (en) * | 1948-03-25 | 1951-04-18 | British Mechanical Prod Ltd | A new or improved method of securing two interfitting parts together and/or of obtaining a seal between two interfitting connected parts |
| GB701436A (en) * | 1950-03-17 | 1953-12-23 | Hagen Norbert | Methods of coating or lining articles with a layer of polyvinyl chloride or like synthetic thermoplastic substance |
| DE1479670A1 (en) * | 1964-01-27 | 1969-07-10 | Siemens Ag | Welded connection for tubular, thermoplastic plastic parts |
| GB1116878A (en) * | 1964-08-10 | 1968-06-12 | Raychem Corp | Heat recoverable article |
| US3539411A (en) * | 1964-08-21 | 1970-11-10 | Raychem Corp | Process for protectively covering substrate articles |
| FR2232423A1 (en) * | 1973-06-08 | 1975-01-03 | Pont A Mousson | |
| FR2252191A1 (en) * | 1973-11-27 | 1975-06-20 | Atomenergi Ab | |
| US3929538A (en) * | 1974-06-14 | 1975-12-30 | Clow Corp | Method of assembling a thermoplastic sleeve onto a pipe or the like |
| JPS5490370A (en) * | 1977-12-28 | 1979-07-18 | Mitsubishi Electric Corp | Method of forming flexible shaft coupling |
| FR2503622A1 (en) * | 1981-04-13 | 1982-10-15 | Laurent Jacques | PROCESS FOR INTERIORALLY PUTTING PIPES AND TUBE FOR ITS IMPLEMENTATION |
| JPS6023025A (en) * | 1983-06-15 | 1985-02-05 | Molten Corp | Fixing method of rubber part |
| GB2148537A (en) * | 1983-10-13 | 1985-05-30 | Bicc Plc | Optical fibre splicing |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN, vol. 3, no. 114 (C-59), 21 septembre 1979, page 14 C 59; & JP-A-54 90 370 (MITSUBISHI DENKI K.K.) 18-07-1979 * |
| PATENT ABSTRACTS OF JAPAN, vol. 9, no. 142 (M-388)[1865], 18 juin 1985; & JP-A-60 23 025 (MORUTEN K.K.) 05-02-1985 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2620647B1 (en) | 1990-03-23 |
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