FR2572993A1 - Method and device for reshaping, before assembly, a deformed plastic part - Google Patents
Method and device for reshaping, before assembly, a deformed plastic part Download PDFInfo
- Publication number
- FR2572993A1 FR2572993A1 FR8417439A FR8417439A FR2572993A1 FR 2572993 A1 FR2572993 A1 FR 2572993A1 FR 8417439 A FR8417439 A FR 8417439A FR 8417439 A FR8417439 A FR 8417439A FR 2572993 A1 FR2572993 A1 FR 2572993A1
- Authority
- FR
- France
- Prior art keywords
- shells
- tubes
- shape
- assembled
- assembly
- 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.)
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Classifications
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
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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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/16—Straightening or flattening
- B29C53/20—Straightening or flattening of tubes
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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
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
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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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
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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
- B29C66/01—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
- B29C66/01—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
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt 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
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
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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
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5229—Joining tubular articles involving the use of a socket
-
- 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
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
- B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
La présente invention a essentiellement pour objet un procédé de remise en forme avant assemblage d'une pièce en matière plastique déformée. The present invention essentially relates to a method of getting back into shape before assembling a piece of deformed plastic.
Elle vise également un dispositif pour l'exécution de ce procédé. It also relates to a device for the execution of this process.
On sait que, pour transporter des fluides divers, on utilise de plus en plus des tubes ou conduites en matière plastique qui sont mises bout à bout et assemblées d'une manière appropriée. L'assemblage peut être réalisé par emboîtement ou emmanchement des tubes, ou encore les tubes peuvent être soudés bout à bout voire raccordés au moyen d'un manchon à fil électrique permettant le soudage. It is known that, for transporting various fluids, plastic tubes or pipes are increasingly used which are placed end to end and assembled in an appropriate manner. The assembly can be carried out by fitting or fitting the tubes, or the tubes can be welded end to end or even connected by means of an electrical wire sleeve allowing the welding.
Toutefois, un tel assemblage est le plus souvent long et pénible à réaliser. En effet, on sait que la plupart des matières plastiques, telles que le polyéthylène, vieillissent mal. Ceci revient à dire que les tubes présentent une forme cylindrique parfaite après usinage ou extrusion, mais que, si on les utilise un certain temps après, on se trouve en présence de tubes qui présentent une ovalisation plus ou moins marquée et qui par conséquent rend les assemblages particulièrement difficiles à effectuer. Autrement dit, pour permettre l'emboStement des tubes ou bien leur raccordement par manchon, on est obligé de procéder à un rabotage par exemple pour ramener à des cotes précises les tubes en vue de permettre leur assemblage. However, such an assembly is most often long and painful to carry out. Indeed, we know that most plastics, such as polyethylene, age badly. This amounts to saying that the tubes have a perfect cylindrical shape after machining or extrusion, but that, if they are used for a certain time afterwards, we are in the presence of tubes which have a more or less marked ovalization and which consequently makes them particularly difficult to assemble. In other words, to allow the tubes to nest or else their connection by sleeve, it is necessary to plan, for example to bring the tubes to precise dimensions in order to allow their assembly.
Comme on le comprend, une telle opération de rabotage ou autre modifie la structure des tubes de sorte que leur assemblage ne présente pas les qualités de rigidité désirées. Il faut également ajouter que si l'on assemble les tubes avec un manchon électro-soudable, que ces tubes soient ovalisés ou bien que le défaut d'ovalisation ait été corrigé par rabotage, la soudure peut ne pas être homogène de sorte que l'assemblage demeure finalement imparfait. As can be understood, such a planing or other operation modifies the structure of the tubes so that their assembly does not have the desired rigidity qualities. It should also be added that if the tubes are assembled with an electro-weldable sleeve, that these tubes are ovalized or that the defect in ovalization has been corrected by planing, the weld may not be homogeneous so that the assembly ultimately remains imperfect.
Aussi, la présente invention a pour but de reme- dier notamment aux inconvénients ci-dessus en proposant un procédé et un dispositif de remise en forme d'une pièce en matière plastique déformée par le vieillissement, le conditionnement et/ou le transport, lequel procédé et dispositif permettent l'assemblage de telles pièces en matière plastique sans faire appel à des moyens modifiant leur structure et conférant audit assemblage toutes les qualités requises d'homogénéité et de solidité. Also, the object of the present invention is to remedy in particular the above drawbacks by proposing a method and a device for reshaping a plastic part deformed by aging, packaging and / or transport, which method and device allow the assembly of such plastic parts without using means modifying their structure and giving said assembly all the required qualities of uniformity and solidity.
A cet effet, l'invention a pour objet un procédé de remise en forme avant assemblage d'une pièce en matière plastique déformée présentant par exemple une forme tubulaire, caractérisé en ce qu'il consiste à appliquer sur au moins une partie de cette pièce en matière plastique-deux demi-coquilles que l'on serre sur ladite pièce pendant un certain temps pour qu'elle reprenne sa forme initiale et parfaite correspondant à celle des demi-coquilles, de sorte qu'après desserrage et enlèvement de celles-ci, ladite pièce, remise en forme, peut être assemblée rapidement et sans effort avec une autre pièce. To this end, the subject of the invention is a method of getting back into shape before assembling a piece of deformed plastic material having for example a tubular shape, characterized in that it consists in applying to at least part of this piece in plastic material-two half-shells which are tightened on said part for a certain time so that it resumes its initial and perfect shape corresponding to that of the half-shells, so that after loosening and removal of these , said part, reshaped, can be assembled quickly and effortlessly with another part.
Selon une autre caractéristique de ce procédé, on réalise les opérations précitées d'application, de serrage, de desserrage et d'enlèvement des deux demi-coquilles sur une extrémité de deux tubes en matière plastique déformés, puis on met bout à bout les tubes par leurs extrémités remises en forme, et on les assemble par manchonnageou bien par simple soudage bout à bout des extrémités réunies. According to another characteristic of this process, the abovementioned operations of application, tightening, loosening and removal of the two half-shells are carried out on one end of two deformed plastic tubes, then the tubes are placed end to end. by their reshaped ends, and they are assembled by sleeving or else by simple butt welding of the joined ends.
Selon un autre mode de réalisation, on réalise les opérations précitées d'application, de serrage, de desserrage et d'enlèvement des deux demi-coquilles sur l'une des extrémités de deux tubes en matière plastique déformés, puis on assemble ces deux tubes par emboîtement mutuel de leurs extrémités remises en forme. According to another embodiment, the aforementioned operations of application, tightening, loosening and removal of the two half-shells are carried out on one of the ends of two deformed plastic tubes, then these two tubes are assembled by mutual interlocking of their reshaped ends.
L'invention vise également un dispositif pour la mise en-oeuvre du procédé répondant à l'une ou l'autre des caractéristiques ci-dessus,- ce dispositif comprenant essentiellement une matrice constituée par deux demicoquilles en métal léger a laquelle sont associés des moyens de serrage. The invention also relates to a device for implementing the method meeting one or the other of the above characteristics, - this device essentially comprising a matrix constituted by two light metal half-shells with which means are associated Clamping.
Suivant un exemple de réalisation, ces moyens de serrage sont constitués par un ou plusieurs colliers serrage par boulons. According to an exemplary embodiment, these clamping means consist of one or more clamps with bolts.
On précisera ici que les deux demi-coquilles précitées présentent en section transversale une-forme-quelconque, telle que semi-cylindrique par exemple, laquelle forme est évidemment fonction de la section transversale- des pièces tubulaires à assembler. It will be specified here that the two aforementioned half-shells have in any cross-section any shape, such as semi-cylindrical for example, which shape is obviously a function of the cross section of the tubular parts to be assembled.
Mais d'autres caractéristiques et avantages de l'invention appariai tront mieux dans la description détaillée qui suit et se réfère aux dessins annexés, donnés uniquement à titre d'exemple, et dans lesquels
- la figure 1 est une vue en perspective de l'extré- mité d'un tube en matière plastique qui est remise en forme avant assemblage avec un autre tube l'aide d'un dispositif conforme a l'invention
- la figure 2 est une vue en coupe axiale d'un assemblage de deux tubes par manchon électrosoudable, et
- la figure 3 est une vue en perspective des extrémités des deux tubes assemblés par ledit manchon.However, other characteristics and advantages of the invention will appear better in the detailed description which follows and refers to the appended drawings, given solely by way of example, and in which
- Figure 1 is a perspective view of the end of a plastic tube which is reshaped before assembly with another tube using a device according to the invention
FIG. 2 is a view in axial section of an assembly of two tubes by electrofusion sleeve, and
- Figure 3 is a perspective view of the ends of the two tubes assembled by said sleeve.
Suivant un exemple de réalisation, et en reportant plus particulièrement à la figure 1, on voit un dispositif de remise en forme avant assemblage de ltextremité 1 d'un tube 2 en matière plastique, telle que polyéthylène, lequel dispositif comprend essentiellement une matrice constituée par deux demi-coquilles 3 présentant ici une forme parfaitement semi-cylindrique et qui sont de préférence en un métal léger. According to an exemplary embodiment, and with particular reference to FIG. 1, there can be seen a device for reshaping before assembly of the end 1 of a tube 2 of plastic material, such as polyethylene, which device essentially comprises a matrix constituted by two half-shells 3 having here a perfectly semi-cylindrical shape and which are preferably made of a light metal.
Aux demi-coquilles 3 sont associés des moyens de serrage qui, suivant l'exemple représenté, sont constitués par des colliers 4 en forme de boucle ouverte et dont les extrémités libres 4a peuvent être serrées par des boulons 5. The half-shells 3 are associated with clamping means which, according to the example shown, consist of collars 4 in the form of an open loop and whose free ends 4a can be tightened by bolts 5.
Les demi-coquilles 3 présentent ici une forme semi-cylindrique, mais on pourrait parfaitement prévoir pour ces demi-coquilles, et cela sans sortir du cadre de l'invention, une forme autre que semi-cylindrique qui correspondrait évidemment a une autre forme en section transversale du tube 2, par exemple une forme polygonale. The half-shells 3 have here a semi-cylindrical shape, but one could perfectly provide for these half-shells, and this without departing from the scope of the invention, a shape other than semi-cylindrical which would obviously correspond to another shape in cross section of the tube 2, for example a polygonal shape.
De même, les colliers de serrage peuvent être constitués chacun de deux demi-colliers, ou bien un autre de système de serrage approprié des demi-coquilles 3 sur la périphérie externe du tube 2peut être prévu. Similarly, the clamps can each consist of two half-collars, or else another suitable clamping system for the half-shells 3 on the outer periphery of the tube 2 can be provided.
On décrira maintenant comment s'effectue la remise en forme, préalablement a l'assemblage, du tube en matière plastique 2. We will now describe how the plastic tube 2 is reshaped before assembly.
On rappellera tout d'abord que l'assemblage de tubes tels que 2 nécessite un taux d'ovalisation qui doit être inférieur à 3,5 %. Or, il s'avère que, fréquemment, le taux d'ovalisation constaté sur les chantiers dépasse 5 %, ceci étant dû, comme expliqué plus haut, au vieillissement de la matière plastique ou encore au conditionnement et transport des tubes. It will be recalled first of all that the assembly of tubes such as 2 requires a rate of ovalization which must be less than 3.5%. However, it turns out that, frequently, the ovalization rate observed on construction sites exceeds 5%, this being due, as explained above, to the aging of the plastic material or to the packaging and transport of the tubes.
Ce problème est résolu grâce a l'invention qui consiste à appliquer sur les extrémités i du tube 2 les demi-coquilles 3, puis à serrer ces demi-coquilles à l'aide des colliers 4 pendant un certain temps pour que les extrémités 1 reprennent leur forme initiale qui, dans le cas présent, est cylindrique. This problem is solved thanks to the invention which consists in applying to the ends i of the tube 2 the half-shells 3, then in tightening these half-shells using the collars 4 for a certain time so that the ends 1 resume their initial shape which, in this case, is cylindrical.
Après desserrage et enlèvement des demicoquilles 3, l'extrémité 1 du tube 2 est remise en forme de manière à pouvoir être assemblée rapidement et sans effort avec l'extrémité d'un autre tube. After loosening and removing the half-shells 3, the end 1 of the tube 2 is reshaped so that it can be assembled quickly and effortlessly with the end of another tube.
Il a été constaté qu'après une heure de mise en forme à l'aide des demi-coquilles 3, on obtenait un taux d'ovalisation inférieur à 1 %, ce qui est tout à fait satisfaisant pour permettre les assemblages qui seront maintenant décrits. It was found that after one hour of shaping using the half-shells 3, an ovalization rate of less than 1% was obtained, which is entirely satisfactory for allowing the assemblies which will now be described .
En se reportant à la figure 2, on voit que les extrémités 1 des tubes 2, immédiatement après mise en forme à l'aide des demi-coquilles 3, sont mises bout à bout, et on les assemble à l'aide d'un manchon electrosoudable 6 qui, comme connu en soi, comporte un conducteur électrique 7. Le soudage du manchon 6 et des extrémités 1 des tubes 2 sera de préférence effectué immédiatement après enlèvement des demi-coquilles 3. Referring to FIG. 2, it can be seen that the ends 1 of the tubes 2, immediately after shaping using the half-shells 3, are placed end to end, and they are assembled using a electrofusion sleeve 6 which, as known per se, comprises an electrical conductor 7. The welding of the sleeve 6 and of the ends 1 of the tubes 2 will preferably be carried out immediately after removal of the half-shells 3.
Grâce au reformage des tubes 2 par les demicoquilles 3, le manchon 6 pourra être introduit rapidement et sans effort sur les extrémités 1, et on est certain de ne pas détériorer le circuit électrique 7 de soudage dudit manchon. En outre, la soudure sera fiable et homogène puisque, grâce à l'invention, on réalise une remise en forme des tubes sans modifier leur structure par enlèvement de matière, comme on le faisait auparavant. Thanks to the reforming of the tubes 2 by the half-shells 3, the sleeve 6 can be introduced quickly and effortlessly on the ends 1, and it is certain not to damage the electrical circuit 7 for welding said sleeve. In addition, the weld will be reliable and homogeneous since, thanks to the invention, the tubes are reshaped without modifying their structure by removing material, as was done before.
Bien que cela ne soit pas représenté, on pourrait réaliser un assemblage de tubes par simple emboîtement et collageopar exemple > desextrémités de ces tubes, immédiatement après que lesdites extrémités aient été remises en forme à l'aide des demi-coquilles 3. Although this is not shown, an assembly of tubes could be produced by simple interlocking and bonding by example> the ends of these tubes, immediately after said ends have been reshaped using the half-shells 3.
On notera ici qu'après remise en forme des tubes 2 avec les demi-coquilles 3, la matière plastique constituant ces tubes mettra un certain temps pour reprendre sa forme déformée, de sorte qu'on dispose d'un temps amplement suffisamment pour réaliser l'assemblage avant le retour de la déformation. It will be noted here that after reshaping the tubes 2 with the half-shells 3, the plastic material constituting these tubes will take a certain time to regain its deformed shape, so that there is ample time to realize the 'assembly before the deformation returns.
On a donc réalisé suivant l'invention un procédé et un dispositif particulièrement avantageux pour réaliser des assemblages de tubes, lesquels assemblages sont rapides, améliorés et peuvent être effectués automatiquement à une cadence élevée. A process and a particularly advantageous device have therefore been produced according to the invention for producing tube assemblies, which assemblies are rapid, improved and can be carried out automatically at a high rate.
Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Of course, the invention is in no way limited to the embodiment described and illustrated, which has been given only by way of example.
C'est ainsi qu'on pourrait parfaitement prévoir d'autres formes pour les demi-coquilles en fonction de la section transversale des pièces en plastique à assembler, de même que l'on peut prévoir des variantes de réalisation pour effectuer le serrage de ces demi-coquilles. This is how we could perfectly provide other shapes for the half-shells depending on the cross section of the plastic parts to be assembled, just as we can provide alternative embodiments for tightening these half shells.
C'est dire que l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont effectuées suivant son esprit. This means that the invention includes all the technical equivalents of the means described, as well as their combinations if these are carried out according to the spirit.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8417439A FR2572993B1 (en) | 1984-11-15 | 1984-11-15 | METHOD AND DEVICE FOR REFORMING BEFORE ASSEMBLY OF A PART IN DEFORMED PLASTIC MATERIAL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8417439A FR2572993B1 (en) | 1984-11-15 | 1984-11-15 | METHOD AND DEVICE FOR REFORMING BEFORE ASSEMBLY OF A PART IN DEFORMED PLASTIC MATERIAL |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2572993A1 true FR2572993A1 (en) | 1986-05-16 |
| FR2572993B1 FR2572993B1 (en) | 1987-03-20 |
Family
ID=9309624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8417439A Expired FR2572993B1 (en) | 1984-11-15 | 1984-11-15 | METHOD AND DEVICE FOR REFORMING BEFORE ASSEMBLY OF A PART IN DEFORMED PLASTIC MATERIAL |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2572993B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0464659A2 (en) * | 1990-06-29 | 1992-01-08 | Immanuel Jeschke | Apparatus for regeneration of the shape of plastic pipes which are unwound from a drum. |
| EP0554699A2 (en) * | 1992-01-18 | 1993-08-11 | Jürgen Tylla | Apparatus for rounding tubes |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB243678A (en) * | 1924-11-28 | 1926-02-04 | Rohrbogenwerk Ges Mit Beschrae | Apparatus for straightening the ends of bent pipes |
| GB891505A (en) * | 1959-10-05 | 1962-03-14 | Superflexit | Improvements in flexible tubular conduits or hoses |
| DE6810948U (en) * | 1968-12-11 | 1969-04-24 | Emil Schober | CALIBRATION DEVICE, IN PARTICULAR FOR THE CONCENTRIC WELDING OF PLASTIC PIPES OD. DGL. |
| DE1950689A1 (en) * | 1969-10-08 | 1971-04-15 | Emil Schober | Plastics thermo-weldable tube aligning - device |
| US3828413A (en) * | 1973-06-11 | 1974-08-13 | Ridge Tool Co | Pipe alignment device |
| US4116037A (en) * | 1977-06-28 | 1978-09-26 | Honeycutt Hugh A | Tubing sizer and straightener |
| FR2538499A1 (en) * | 1982-12-22 | 1984-06-29 | Lequenne Patrick | Aid for making socket or other joints on plastic pipes. |
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1984
- 1984-11-15 FR FR8417439A patent/FR2572993B1/en not_active Expired
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB243678A (en) * | 1924-11-28 | 1926-02-04 | Rohrbogenwerk Ges Mit Beschrae | Apparatus for straightening the ends of bent pipes |
| GB891505A (en) * | 1959-10-05 | 1962-03-14 | Superflexit | Improvements in flexible tubular conduits or hoses |
| DE6810948U (en) * | 1968-12-11 | 1969-04-24 | Emil Schober | CALIBRATION DEVICE, IN PARTICULAR FOR THE CONCENTRIC WELDING OF PLASTIC PIPES OD. DGL. |
| DE1950689A1 (en) * | 1969-10-08 | 1971-04-15 | Emil Schober | Plastics thermo-weldable tube aligning - device |
| US3828413A (en) * | 1973-06-11 | 1974-08-13 | Ridge Tool Co | Pipe alignment device |
| US4116037A (en) * | 1977-06-28 | 1978-09-26 | Honeycutt Hugh A | Tubing sizer and straightener |
| FR2538499A1 (en) * | 1982-12-22 | 1984-06-29 | Lequenne Patrick | Aid for making socket or other joints on plastic pipes. |
Non-Patent Citations (1)
| Title |
|---|
| PLASTVERARBEITER, vol. 33, no. 8, août 1982, pages 849-854, Speyer/Rhein, DE; H.BEHNISCH: "Schweissen von thermoplastischen Kunststoffen" * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0464659A2 (en) * | 1990-06-29 | 1992-01-08 | Immanuel Jeschke | Apparatus for regeneration of the shape of plastic pipes which are unwound from a drum. |
| EP0464659A3 (en) * | 1990-06-29 | 1994-02-09 | Immanuel Jeschke | |
| EP0554699A2 (en) * | 1992-01-18 | 1993-08-11 | Jürgen Tylla | Apparatus for rounding tubes |
| EP0554699A3 (en) * | 1992-01-18 | 1994-03-23 | Juergen Tylla |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2572993B1 (en) | 1987-03-20 |
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