EP1060992A1 - Device for enveloping a load,especially a palletised load, with a film - Google Patents
Device for enveloping a load,especially a palletised load, with a film Download PDFInfo
- Publication number
- EP1060992A1 EP1060992A1 EP00420126A EP00420126A EP1060992A1 EP 1060992 A1 EP1060992 A1 EP 1060992A1 EP 00420126 A EP00420126 A EP 00420126A EP 00420126 A EP00420126 A EP 00420126A EP 1060992 A1 EP1060992 A1 EP 1060992A1
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- European Patent Office
- Prior art keywords
- mandrel
- handle
- rod
- sleeve
- film
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B67/00—Apparatus or devices facilitating manual packaging operations; Sack holders
- B65B67/08—Wrapping of articles
- B65B67/085—Wrapping of articles using hand-held dispensers for stretch films
Definitions
- the invention relates to the technical sector of packaging films.
- the problem is to be able to unroll the film in order to arrange it around the items to be palletized, taking into account the characteristics film stretch.
- the means used have not been satisfactory.
- the operator has no means or special devices allowing it to film the charge correctly, that is to say to arrange the film around the load to be palletized integrating the palette.
- the operator is obliged to manually enter the film reel, using both hands to grasp the ends of the support mandrel on which is rolled up the film.
- Patent FR 2,588,840 discloses a manual unwinding device of reel of stretch film for wrapping.
- this device includes a bow made of two L-shaped elements made of tube of complementary section so that one of the branches of one elements slide freely in one of the branches of the other element to form a telescopic core.
- a handle is integral with one of the elements by being arranged coaxially to the axis of rotation of the coil film mounted between the two opposite parallel horizontal branches of the two telescopic elements.
- the device is equipped with braking means constituted by a nut secured to a clamping piece crossing the branch horizontal of one of the elements to be screwed into a barrel secured to the horizontal branch of the other element. The braking of the coil is therefore obtained by acting more or less on the tightening nut.
- the object of the invention is to remedy these drawbacks, simple, safe, efficient and rational way.
- the problem which the invention proposes to solve is to be able easily unwind stretch plastic film and control its stretchability by a braking action during the unwinding operation as such corresponding to the filming of the charge with the possibility of canceling at anytime and instantly the braking action.
- the plastic film used is advantageously of the type of those which are previously stretched before use, released, then wound on the support mandrel.
- Another problem which the invention proposes to solve is to ability to change film reel without disrupting braking force previously determined.
- each litter can receive, freely rotation, a conical tip capable of cooperating with the ends cores.
- the two end caps are strictly identical.
- the stretch film designated as a whole by (F) is packaged on a reel by being wrapped around a mandrel cylindrical support (1) made of cardboard, plastic or other material.
- the unwinding device comprises two tips identical (2 and 3) arranged to receive two by two free rotation the support mandrel (1).
- each of the end pieces (2 and 3) is established at from a plate (2a - 3a) having a circular centering surface (2b - 3b) for the free engagement of the ends of the support mandrel (1).
- the end pieces (2 and 3) are, on the one hand, connected by a element (4) acting as a grip handle and, on the other hand, subject to means capable of creating an adjustable pressure force for brake the support mandrel (1) concomitantly.
- each of the plates (2a and 3a) has, on the same side that the circular centering surfaces (2b and 3b) and, in an offset manner, relative to the latter, a tubular sheath (2c, 3c) established perpendicular to the corresponding plate (2a - 3a) to be located in a plane parallel to the generators of the support mandrel (1) after engagement on each of the circular spans (2b, 3b).
- Scabbards tubular (2c, 3c) are formed perpendicularly and projecting from the plate (2a and 3a) on the same side as the circular centering surfaces (2b and 3b).
- Each of the sleeves (2c, 3c) has an internal collar (2d, 3d) acting as a stop and delimiting two separate recesses (2e, 2f and 3e, 3f).
- the ends of the support mandrel (1) cooperate in support with frustoconical bearing surfaces (8) freely mounted in rotation at each of the plates (2a) and (3a).
- the two tips (2 and 3) are strictly identical, so that after mounting at each of the two ends of the support mandrel (1), the sleeves (2c and 3c) are arranged in gaze and in coaxial alignment.
- the sleeves (2c and 3c) are established at a previously determined distance from the spans centering (2b and 3b) to allow enough film to be wound up stretchable (F) around the support mandrel (1) depending on the quantities of film required, according to the standards in force.
- the element (4) which acts as a grip handle is constituted by a tube freely engaged and centered in the facing bores (2nd and 3rd) scabbards (2c and 3c).
- This handle (4) is supported for example on only the stop (2d), to allow a relative linear displacement between said handle and the sheaths.
- the handle (4) is indexed rotating in each of the sleeves by any known and appropriate means.
- the rod (5) is freely engaged in the tubular sleeves (2c and 3c) and the element of handle (4).
- the rod (5) is engaged and centered through an opening (2d1) formed in the thickness of the stop (2d) to overflow in the recess (3f) of the opposite sleeve (3c) after having crossed a opening (3d1) of the other stop (2d).
- One of the ends of the rod (5), located on the side of the sheath (2c), has a head (5a) cooperating in support against the stop collar (2d), said head (5a) being located in the bore (2f) of the sheath (2c).
- the rod (5) has a threaded seat (5b) for mounting the element (6) in the form of a head tapped.
- the head (6) is screwed onto the bearing surface (5b) against the member elastic (7), for example in the form of a spring housed in the recess (3f) of the sleeve (3c) and pressing against the stop (3d).
- the head (6) is engaged freely in the recess (3f) of the sleeve (3c).
- the end caps (2 and 3) and their constituent elements are advantageously obtained by injection of a plastic material.
- the use of the device is particularly simple and effective, being given that the operator can grasp it with one hand by means of the handle (4) located parallel to the film generators with the possibility cancel the braking at any time by simply pressing the head (6).
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Replacement Of Web Rolls (AREA)
- Unwinding Webs (AREA)
- Pallets (AREA)
Abstract
Description
L'invention se rattache au secteur technique des films d'emballage.The invention relates to the technical sector of packaging films.
Il est connu d'utiliser, pour assurer le maintien de charges diverses sur des palettes, du film en matière plastique étirable. Généralement, le film plastique étirable est conditionné sous forme d'une bobine enroulée autour d'un mandrin cylindrique en carton ou en plastique.It is known to use, to maintain various loads on pallets, stretch plastic film. Generally the movie stretchable plastic is packaged as a coil wrapped around a cylindrical cardboard or plastic mandrel.
Le problème posé est de pouvoir dérouler le film afin de le disposer autour des éléments à palettiser, en tenant compte des caractéristiques d'étirabilité du film.The problem is to be able to unroll the film in order to arrange it around the items to be palletized, taking into account the characteristics film stretch.
A ce jour, les moyens utilisés ne donnent pas satisfaction. Dans la plupart des cas du reste, l'opérateur n'a pas à sa disposition de moyen ou d'appareils particuliers lui permettant de filmer correctement la charge, c'est-à-dire de disposer le film autour de la charge à palettiser intégrant la palette. L'opérateur est obligé de saisir manuellement la bobine de film, en utilisant ses deux mains pour saisir les extrémités du mandrin support sur lequel est enroulé le film.To date, the means used have not been satisfactory. In the in most cases, the operator has no means or special devices allowing it to film the charge correctly, that is to say to arrange the film around the load to be palletized integrating the palette. The operator is obliged to manually enter the film reel, using both hands to grasp the ends of the support mandrel on which is rolled up the film.
On conçoit que cette façon d'opérer n'est pas rationnelle, les deux mains de l'utilisateur étant indisponibles pendant l'opération de filmage, avec un manque de confort certain pour l'utilisateur et, en tout état de cause une mauvaise préhension. Par ailleurs, la tension exercée sur le film n'est pas constante. We understand that this way of operating is not rational, the two hands of the user being unavailable during the filming operation, with a certain lack of comfort for the user and, in any event poor grip. Furthermore, the tension exerted on the film is not not constant.
On a proposé des systèmes qui se montent dans l'axe de la bobine, c'est-à-dire coaxialement au mandrin support d'enroulement recevant le film plastique étirable. Ces systèmes font, généralement, également office de poignée de préhension. Cette solution n'est toutefois pas satisfaisante.We have proposed systems which are mounted in the axis of the coil, that is to say coaxially with the winding support mandrel receiving the film stretchable plastic. These systems generally also act as grip handle. However, this solution is not satisfactory.
Pour l'essentiel, ces systèmes mettent en oeuvre une tige filetée avec un système d'embouts coniques pour exercer une pression au niveau du mandrin support afin de freiner la bobine du film, au fur et à mesure de son déroulement. Des problèmes apparaissent pour charger la bobine si l'on considère le nombre de pièces relativement important du système qu'il convient, à chaque fois, de démonter et de remonter. Par ailleurs, la pression exercée sur le mandrin est trop importante provoquant un étirement non acceptable du film.For the most part, these systems use a threaded rod with a system of conical tips for exerting pressure on the support mandrel in order to brake the film reel, as it is unfolding. Problems arise when loading the coil if considers the relatively large number of parts of the system that it should be dismantled and reassembled each time. In addition, the pressure exerted on the mandrel is too great causing a stretch not acceptable from the film.
Ce problème est d'autant plus critique lorsque le film plastique est étiré avant utilisation, relâché, puis enroulé sur le mandrin support.This problem is all the more critical when the plastic film is stretched before use, released, then wound on the support mandrel.
Cet état de la technique peut être illustré par l'enseignement du brevet FR 2 588 840. Ce brevet divulgue un appareil dérouleur manuel de bobine de film étirable pour banderolage. Pour l'essentiel, cet appareil comprend un archet composé de deux éléments en forme de L réalisés en tube de section complémentaire de manière que l'une des branches de l'un des éléments coulisse librement dans l'une des branches de l'autre élément pour former une âme télescopique. Une poignée est solidaire de l'un des éléments en étant disposé coaxialement à l'axe de rotation de la bobine de film montée entre les deux branches horizontales parallèles opposées des deux éléments télescopiques. L'appareil est équipé de moyens de freinage constitués par un écrou solidaire d'une pièce de serrage traversant la branche horizontale de l'un des éléments pour se visser dans un fût solidaire de la branche horizontale de l'autre élément. Le freinage de la bobine est donc obtenu en agissant plus ou moins sur l'écrou de serrage.This state of the art can be illustrated by the teaching of Patent FR 2,588,840. This patent discloses a manual unwinding device of reel of stretch film for wrapping. For the most part, this device includes a bow made of two L-shaped elements made of tube of complementary section so that one of the branches of one elements slide freely in one of the branches of the other element to form a telescopic core. A handle is integral with one of the elements by being arranged coaxially to the axis of rotation of the coil film mounted between the two opposite parallel horizontal branches of the two telescopic elements. The device is equipped with braking means constituted by a nut secured to a clamping piece crossing the branch horizontal of one of the elements to be screwed into a barrel secured to the horizontal branch of the other element. The braking of the coil is therefore obtained by acting more or less on the tightening nut.
Toutefois, ces dispositions ne donnent pas satisfaction étant donné que pour changer de bobine, il est nécessaire de dévisser cet écrou de serrage afin d'annuler par conséquent l'effort de freinage. On conçoit qu'après avoir remis une nouvelle bobine, il sera difficile d'obtenir le même effort de freinage que celui déterminé précédemment. En outre, ces dispositions ne permettent pas d'annuler temporairement l'effort de freinage pendant l'action de banderolage ce qui s'avère important en fonction de certains types de films étirables.However, these provisions are not satisfactory given that to change the coil, it is necessary to unscrew this nut tightening in order to therefore cancel the braking force. We design that after putting in a new coil it will be difficult to get the same braking force than that determined previously. In addition, these provisions do not temporarily cancel the braking effort during the wrapping action which is important depending on certain types of stretch films.
Les mêmes inconvénients se retrouvent dans l'enseignement du brevet UK 2 055 345.The same drawbacks are found in the teaching of UK Patent 2,055,345.
L'invention s'est fixée pour but de remédier à ces inconvénients, de manière simple, sûre, efficace et rationnelle.The object of the invention is to remedy these drawbacks, simple, safe, efficient and rational way.
Le problème que se propose de résoudre l'invention est de pouvoir dérouler facilement un film plastique étirable et de contrôler son étirabilité par une action de freinage pendant l'opération de déroulement en tant que telle correspondant au filmage de la charge avec la possibilité d'annuler à tout moment et instantanément l'action de freinage. Le film plastique utilisé est avantageusement du type de ceux qui sont préalablement étirés avant utilisation, relâchés, puis enroulés sur le mandrin support.The problem which the invention proposes to solve is to be able easily unwind stretch plastic film and control its stretchability by a braking action during the unwinding operation as such corresponding to the filming of the charge with the possibility of canceling at anytime and instantly the braking action. The plastic film used is advantageously of the type of those which are previously stretched before use, released, then wound on the support mandrel.
Un autre problème que se propose de résoudre l'invention est de pouvoir changer la bobine de film sans dérégler l'effort de freinage préalablement déterminé.Another problem which the invention proposes to solve is to ability to change film reel without disrupting braking force previously determined.
Pour résoudre ces différents problèmes, dans un appareil du type de ceux comprenant, d'une manière connue, deux embouts présentant des agencements pour le montage à libre rotation des extrémités du mandrin, lesdits embouts étant reliés par un élément apte à faire office de poignée de préhension et, assujettis à des moyens aptes à créer un effort de pression réglable pour freiner, d'une manière concomitante, le mandrin support, il a été conçu et mis au point une forme de réalisation selon laquelle :
- chaque embout est constitué par une platine support présentant, en débordement de l'une de ses faces, d'une part, une portée circulaire pour le montage, deux à deux, à libre rotation du mandrin et, d'autre part, un fourreau tubulaire pour le montage, deux à deux, de l'élément faisant office de poignée dans un plan parallèle aux génératrices du mandrin,
- chaque fourreau présente une butée interne délimitant deux chambrages,
- la poignée est constitué par un tube engagé et centré dans les chambrages en regard en appui sur seulement l'une des butées,
- les moyens de pression sont constitués par une tige engagée librement dans les fourreaux et dans l'élément tubulaire, au travers des butées internes,
- l'une des extrémités de la tige présente des agencements de coopération avec l'une des butées de l'un des fourreaux,
- l'extrémité de la tige est filetée et déborde dans le chambrage de l'autre fourreau ne recevant pas la poignée, pour coopérer avec une tête taraudée asservie à un organe élastique monté dans ledit chambrage,
- une action de vissage exercée sur la tête taraudée crée l'effort de pression réglable pour freiner, d'une manière concomitante, le mandrin support, tandis qu'une pression exercée sur ladite tête annule le freinage.
- each end piece is constituted by a support plate having, in overflow from one of its faces, on the one hand, a circular surface for mounting, two by two, with free rotation of the mandrel and, on the other hand, a sheath tubular for mounting, two by two, the element acting as a handle in a plane parallel to the generatrices of the mandrel,
- each sleeve has an internal stop delimiting two recesses,
- the handle is constituted by a tube engaged and centered in the recesses opposite, bearing on only one of the stops,
- the pressure means consist of a rod freely engaged in the sleeves and in the tubular element, through internal stops,
- one of the ends of the rod has arrangements for cooperation with one of the stops of one of the sleeves,
- the end of the rod is threaded and projects into the recess of the other sleeve not receiving the handle, in order to cooperate with a tapped head slaved to an elastic member mounted in said recess,
- a screwing action exerted on the tapped head creates the adjustable pressure force to brake, concomitantly, the support mandrel, while a pressure exerted on said head cancels the braking.
Dans une forme de réalisation, chaque portée peut recevoir, à libre rotation, un embout conique apte à coopérer avec les extrémités correspondantes du mandrin.In one embodiment, each litter can receive, freely rotation, a conical tip capable of cooperating with the ends cores.
Avantageusement et compte tenu de ces caractéristiques, les deux embouts sont strictement identiques.Advantageously and taking into account these characteristics, the two end caps are strictly identical.
L'invention est exposée ci-après plus en détail à l'aide des figures des dessins annexés dans lesquels :
- la figure 1 est une vue en perspective avant montage des principaux éléments de l'appareil selon l'invention ;
- la figure 2 est une vue en perspective correspondant à la figure 1 après montage des éléments ;
- la figure 3 est une vue en coupe longitudinale de l'appareil montrant notamment l'action de freinage ;
- la figure 3bis est une vue semblable à la figure 3 montrant l'annulation temporaire de l'action de freinage ;
- la figure 4 est, à une échelle plus importante, une vue partielle en coupe, d'une autre forme de réalisation, au niveau du montage tournant du mandrin par rapport aux embouts. ;
- la figure 5 et une vue en plan, selon la figure 4.
- Figure 1 is a perspective view before assembly of the main elements of the apparatus according to the invention;
- Figure 2 is a perspective view corresponding to Figure 1 after mounting of the elements;
- Figure 3 is a longitudinal sectional view of the apparatus showing in particular the braking action;
- Figure 3bis is a view similar to Figure 3 showing the temporary cancellation of the braking action;
- Figure 4 is, on a larger scale, a partial sectional view of another embodiment, at the rotary mounting of the mandrel relative to the ends. ;
- FIG. 5 and a plan view, according to FIG. 4.
D'une manière connue, le film étirable désigné dans son ensemble par (F) est conditionné en bobine en étant enroulé autour d'un mandrin support cylindrique (1) en carton, en plastique ou autre matière. Avantageusement, l'invention trouve une application pour un film étirable du type de celui connu sous la marque "L'ETIRE", c'est-à-dire un film plastique étiré avant utilisation puis relâché pour être enroulé sur le mandrin (1).In a known manner, the stretch film designated as a whole by (F) is packaged on a reel by being wrapped around a mandrel cylindrical support (1) made of cardboard, plastic or other material. Advantageously, the invention finds an application for a stretch film of the type known under the brand "L'ETIRE", that is to say a film plastic stretched before use then released to be wound on the mandrel (1).
L'appareil dérouleur selon l'invention comprend deux embouts identiques (2 et 3) agencés pour recevoir deux à deux à libre rotation le mandrin support (1). Dans ce but, chacun des embouts (2 et 3) est établi à partir d'une platine (2a - 3a) présentant une portée circulaire de centrage (2b - 3b) pour le libre engagement des extrémités du mandrin support (1). D'une manière importante, les embouts (2 et 3) sont, d'une part, reliés par un élément (4) faisant office de poignée de préhension et, d'autre part, assujettis à des moyens aptes à créer un effort de pression réglable pour freiner, d'une manière concomitante, le mandrin support (1).The unwinding device according to the invention comprises two tips identical (2 and 3) arranged to receive two by two free rotation the support mandrel (1). For this purpose, each of the end pieces (2 and 3) is established at from a plate (2a - 3a) having a circular centering surface (2b - 3b) for the free engagement of the ends of the support mandrel (1). Of a importantly, the end pieces (2 and 3) are, on the one hand, connected by a element (4) acting as a grip handle and, on the other hand, subject to means capable of creating an adjustable pressure force for brake the support mandrel (1) concomitantly.
Dans ce but, chacune des platines (2a et 3a) présente, du même côté que les portées circulaires de centrage (2b et 3b) et, d'une manière décalée, par rapport à ces dernières, un fourreau tubulaire (2c, 3c) établi perpendiculairement à la platine correspondante (2a - 3a) pour être situé dans un plan parallèle aux génératrices du mandrin support (1) après engagement sur chacune des portées circulaires (2b, 3b). Les fourreaux tubulaires (2c, 3c) sont formés perpendiculairement et en débordement de la platine (2a et 3a) du même côté que les portées circulaires de centrage (2b et 3b). Chacun des fourreaux (2c, 3c) présente une collerette interne (2d, 3d) faisant office de butée et délimitant deux chambrages séparés (2e, 2f et 3e, 3f).For this purpose, each of the plates (2a and 3a) has, on the same side that the circular centering surfaces (2b and 3b) and, in an offset manner, relative to the latter, a tubular sheath (2c, 3c) established perpendicular to the corresponding plate (2a - 3a) to be located in a plane parallel to the generators of the support mandrel (1) after engagement on each of the circular spans (2b, 3b). Scabbards tubular (2c, 3c) are formed perpendicularly and projecting from the plate (2a and 3a) on the same side as the circular centering surfaces (2b and 3b). Each of the sleeves (2c, 3c) has an internal collar (2d, 3d) acting as a stop and delimiting two separate recesses (2e, 2f and 3e, 3f).
Dans la forme de réalisation illustrée figure 4, les extrémités du mandrin support (1) coopèrent en appui avec des portées tronconiques (8) montées libres en rotation au niveau de chacune des platines(2a) et (3a).In the embodiment illustrated in FIG. 4, the ends of the support mandrel (1) cooperate in support with frustoconical bearing surfaces (8) freely mounted in rotation at each of the plates (2a) and (3a).
Comme indiqué, les deux embouts (2 et 3) sont strictement identiques, de sorte qu'après montage au niveau de chacune des deux extrémités du mandrin support (1), les fourreaux (2c et 3c) sont disposés en regard et en alignement coaxial. On observe que les fourreaux (2c et 3c) sont établis à une distance préalablement déterminée par rapport aux portées de centrage (2b et 3b) pour permettre d'enrouler suffisamment de film étirable (F) autour du mandrin support (1) en fonction des quantités de film requises, selon les normes en vigueur.As indicated, the two tips (2 and 3) are strictly identical, so that after mounting at each of the two ends of the support mandrel (1), the sleeves (2c and 3c) are arranged in gaze and in coaxial alignment. We observe that the sleeves (2c and 3c) are established at a previously determined distance from the spans centering (2b and 3b) to allow enough film to be wound up stretchable (F) around the support mandrel (1) depending on the quantities of film required, according to the standards in force.
L'élément (4) qui fait office de poignée de préhension est constitué par un tube engagé librement et centré dans les alésages en regard (2e et 3e) des fourreaux (2c et 3c). Cette poignée (4) est en appui par exemple, sur seulement la butée (2d), pour permettre un déplacement linéaire relatif entre ladite poignée et les fourreaux. Avantageusement, la poignée (4) est indexée en rotation dans chacun des fourreaux par tout moyen connu et approprié.The element (4) which acts as a grip handle is constituted by a tube freely engaged and centered in the facing bores (2nd and 3rd) scabbards (2c and 3c). This handle (4) is supported for example on only the stop (2d), to allow a relative linear displacement between said handle and the sheaths. Advantageously, the handle (4) is indexed rotating in each of the sleeves by any known and appropriate means.
Pour assurer la mise en pression des deux embouts (2 et 3) par rapport au mandrin support (1) en vue de freiner plus ou moins ledit mandrin (1) au fur et à mesure du déroulement du film (F), on utilise une tige indépendante (5) assujettie à un système de mise en pression en tant que tel, constitué par une tête (6) et un organe élastique (7). La tige (5) est engagée librement dans les fourreaux tubulaires (2c et 3c) et l'élément de poignée (4).To ensure the pressurization of the two nozzles (2 and 3) by relative to the support mandrel (1) in order to more or less brake said mandrel (1) as the film unfolds (F), a independent rod (5) subject to a pressurization system as as such, constituted by a head (6) and an elastic member (7). The rod (5) is freely engaged in the tubular sleeves (2c and 3c) and the element of handle (4).
Plus particulièrement, la tige (5) est engagée et centrée au travers d'une ouverture (2d1) formée dans l'épaisseur de la butée (2d) pour déborder dans le chambrage (3f) du fourreau opposé (3c) après avoir traversée une ouverture (3d1) de l'autre butée (2d). L'une des extrémités de la tige (5), située du côté du fourreau (2c), présente une tête (5a) coopérant en appui contre la collerette de butée (2d), ladite tête (5a) étant située dans l'alésage (2f) du fourreau (2c). A son extrémité opposée, la tige (5) présente une portée filetée (5b) pour le montage de l'élément (6) sous forme d'une tête taraudée. La tête (6) est vissée sur la portée (5b) à l'encontre de l'organe élastique (7), sous forme par exemple d'un ressort logé dans le chambrage (3f) du fourreau (3c) et en appui contre la butée (3d). La tête (6) est engagée librement dans le chambrage (3f) du fourreau (3c).More particularly, the rod (5) is engaged and centered through an opening (2d1) formed in the thickness of the stop (2d) to overflow in the recess (3f) of the opposite sleeve (3c) after having crossed a opening (3d1) of the other stop (2d). One of the ends of the rod (5), located on the side of the sheath (2c), has a head (5a) cooperating in support against the stop collar (2d), said head (5a) being located in the bore (2f) of the sheath (2c). At its opposite end, the rod (5) has a threaded seat (5b) for mounting the element (6) in the form of a head tapped. The head (6) is screwed onto the bearing surface (5b) against the member elastic (7), for example in the form of a spring housed in the recess (3f) of the sleeve (3c) and pressing against the stop (3d). The head (6) is engaged freely in the recess (3f) of the sleeve (3c).
Compte tenu de ces dispositions, lorsque l'on visse la tête (6) sur la portée filetée (5b) de la tige (5), on comprime le ressort (7), ce qui a pour effet de créer, au niveau de chacun des embouts (2 et 3), deux forces de traction opposée (F1 et F2), compte tenu du montage de l'autre extrémité (5a) de la tige (5) en butée sur la collerette (2d). Ces deux efforts de traction opposés (F1 - F2) provoquent, d'une manière concomitante, un effort de pression au niveau des portées circulaires (2b et 3b) (ou des têtes coniques (8)) créant par conséquent un effort de freinage sur le mandrin (1) recevant le film étable (F). On conçoit donc qu'en serrant plus ou moins la tête (6), les forces de pression exercées par les embouts au niveau de l'extrémité de débordement du mandrin support (1) sont plus ou moins importantes pour freiner, d'une manière correspondante, le déroulement du film (F) (figure 3).In view of these provisions, when the head (6) is screwed onto the threaded surface (5b) of the rod (5), the spring (7) is compressed, which has for effect of creating, at each of the end pieces (2 and 3), two forces of opposite traction (F1 and F2), taking into account the mounting of the other end (5a) of the rod (5) in abutment on the flange (2d). These two tensile forces opposites (F1 - F2) cause, concomitantly, an effort of pressure at the circular surfaces (2b and 3b) (or conical heads (8)) consequently creating a braking force on the mandrel (1) receiving the stable film (F). We therefore understand that by tightening the head more or less (6), the pressure forces exerted by the tips at the end of overflow of the support mandrel (1) are more or less important for brake, in a corresponding manner, the unwinding of the film (F) (FIG. 3).
D'une manière importante, pour annuler temporairement l'action de freinage, il suffit d'exercer un appui digital sur la tête (6) solidaire de la tige (5), pour libérer les deux embouts (2) et (3) par rapport au mandrin (1). Ces dispositions permettent également de changer la bobine de film (F) et de retrouver ensuite immédiatement, sans aucune intervention, l'effort de freinage sélectionné (figure 3bis).Importantly, to temporarily cancel the action of braking, it suffices to exert a digital support on the head (6) integral with the rod (5), to release the two end pieces (2) and (3) relative to the mandrel (1). These provisions also allow the film reel (F) to be changed and then immediately find, without any intervention, the effort of braking selected (figure 3bis).
Les embouts (2 et 3) et leurs éléments constitutifs sont avantageusement obtenus par injection d'une matière plastique.The end caps (2 and 3) and their constituent elements are advantageously obtained by injection of a plastic material.
L'utilisation de l'appareil est particulièrement simple et efficace, étant donné que l'opérateur peut le saisir d'une seule main au moyen de la poignée (4) située parallèlement aux génératrices du film avec la possibilité d'annuler à tout moment le freinage par simple appui exercé sur la tête (6).The use of the device is particularly simple and effective, being given that the operator can grasp it with one hand by means of the handle (4) located parallel to the film generators with the possibility cancel the braking at any time by simply pressing the head (6).
Les avantages ressortent bien de la description en particulier on souligne :
- la simplicité d'utilisation,
- la facilité et la rapidité de montage et démontage pour changer de bobine, sans être obligé de modifier l'effort de freinage sélectionné,
- la possibilité de régler facilement l'effort de freinage et de l'annuler temporairement à tout moment,
- l'efficacité du résultat obtenu.
- ease of use,
- the ease and speed of assembly and disassembly to change the coil, without having to modify the selected braking force,
- the possibility of easily adjusting the braking force and temporarily canceling it at any time,
- the effectiveness of the result obtained.
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9907873A FR2795047B1 (en) | 1999-06-16 | 1999-06-16 | APPARATUS FOR FILMING A LOAD, ESPECIALLY A PALLETIZED LOAD |
| FR9907873 | 1999-06-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1060992A1 true EP1060992A1 (en) | 2000-12-20 |
| EP1060992B1 EP1060992B1 (en) | 2003-07-23 |
Family
ID=9547088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00420126A Expired - Lifetime EP1060992B1 (en) | 1999-06-16 | 2000-06-14 | Device for enveloping a load,especially a palletised load, with a film |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1060992B1 (en) |
| AT (1) | ATE245568T1 (en) |
| DE (1) | DE60003977T2 (en) |
| FR (1) | FR2795047B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2984850A1 (en) * | 2011-12-26 | 2013-06-28 | Gallou Pierre Lucien Georges | Manual unwinder for stretchable or pre-stretchable film for wrapping e.g. parcels in packaging area, has upper assembly comprising ball bearing allowing conical low part to turn freely with stretchable film roller, which rests on base plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2055345A (en) | 1979-07-27 | 1981-03-04 | Perfarap Ltd | Hand-held device for wrapping |
| FR2588840A1 (en) | 1985-10-18 | 1987-04-24 | Deome Plastiques | Manual unwinder for a reel of stretchable film for strapping |
| FR2608140A3 (en) * | 1986-12-09 | 1988-06-17 | Deome Plastiques | Braked manual pay-out support for a reel of stretchable film |
-
1999
- 1999-06-16 FR FR9907873A patent/FR2795047B1/en not_active Expired - Fee Related
-
2000
- 2000-06-14 AT AT00420126T patent/ATE245568T1/en not_active IP Right Cessation
- 2000-06-14 EP EP00420126A patent/EP1060992B1/en not_active Expired - Lifetime
- 2000-06-14 DE DE60003977T patent/DE60003977T2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2055345A (en) | 1979-07-27 | 1981-03-04 | Perfarap Ltd | Hand-held device for wrapping |
| FR2588840A1 (en) | 1985-10-18 | 1987-04-24 | Deome Plastiques | Manual unwinder for a reel of stretchable film for strapping |
| FR2608140A3 (en) * | 1986-12-09 | 1988-06-17 | Deome Plastiques | Braked manual pay-out support for a reel of stretchable film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2984850A1 (en) * | 2011-12-26 | 2013-06-28 | Gallou Pierre Lucien Georges | Manual unwinder for stretchable or pre-stretchable film for wrapping e.g. parcels in packaging area, has upper assembly comprising ball bearing allowing conical low part to turn freely with stretchable film roller, which rests on base plate |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2795047B1 (en) | 2001-08-31 |
| ATE245568T1 (en) | 2003-08-15 |
| EP1060992B1 (en) | 2003-07-23 |
| DE60003977D1 (en) | 2003-08-28 |
| DE60003977T2 (en) | 2004-04-22 |
| FR2795047A1 (en) | 2000-12-22 |
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