FR2758096A1 - Dispenser for concentrated colouring matter or other additive, e.g. to plastic - Google Patents

Dispenser for concentrated colouring matter or other additive, e.g. to plastic Download PDF

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Publication number
FR2758096A1
FR2758096A1 FR9700350A FR9700350A FR2758096A1 FR 2758096 A1 FR2758096 A1 FR 2758096A1 FR 9700350 A FR9700350 A FR 9700350A FR 9700350 A FR9700350 A FR 9700350A FR 2758096 A1 FR2758096 A1 FR 2758096A1
Authority
FR
France
Prior art keywords
rod
motor
additive
dispenser
additives
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.)
Pending
Application number
FR9700350A
Other languages
French (fr)
Inventor
Raymond Cohen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR9700350A priority Critical patent/FR2758096A1/en
Publication of FR2758096A1 publication Critical patent/FR2758096A1/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/003—Control of flow ratio using interconnected flow control elements
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
    • B29C45/1816—Feeding auxiliary material, e.g. colouring material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B29C48/2888—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules in band or in strip form, e.g. rubber strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/29—Feeding the extrusion material to the extruder in liquid form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients

Abstract

The dispenser consists of a housing (1) through which the raw material (11) is fed by a hopper (2), and which contains a driven rotary blade (12) for cutting a continuous stick (3) of concentrated colouring material or other additive into pieces (14) of equal length as it is fed into the housing through a side aperture and guide (8). The motor (13) which drives the rotating blade (12) and a motor (7) which controls the speed of the additive stick's travel are controlled by an electronic unit which regulates their speed according to the output of the dispenser. The dispenser ensures precise dosing of the additive while being small in size, easily adapted to production machinery, is non-polluting and can be cleaned quickly.

Description

La présente invention concerne un doseur facilement adaptable sur les machines de mise en oeuvre des matières plastiques et des élastomères telles que: presses à injecter, extrudeuses à vis sans fin. calandres. etc dans le but d'v adioindre parallèlement à leur alimentation de base en Polvmères ou élastomères; des additifs tels que: colorants concentrés, adjuvants, charges etc. caractérisé en ce que ces additifs sont constitués uniquement en longueur continue et de section constante tel un jonc ou un tube et découpés directement sur les machines de production, élément par élément. The present invention relates to a dispenser easily adaptable to machines for processing plastics and elastomers such as: injection presses, worm extruders. calenders. etc with the aim of adding together with their basic supply of polymers or elastomers; additives such as: concentrated dyes, additives, fillers, etc. characterized in that these additives consist only of continuous length and of constant section such as a rod or a tube and cut directly on the production machines, element by element.

Contrairement à l'invention, les doseurs connus utilisent des produits en vrac constitués: sous forme de granules cylindriques de trois millimètres de diamètre environ, sous forme de petits cubes de trois millimètres de côté environ, sous forme de perles ou de poudre: contenus dans une réserve dans laquelle ces doseurs puisent des doses volumétriques ou gravimétriques pour les incorporer au Produit de base. Unlike the invention, the known dosers use bulk products consisting of: in the form of cylindrical granules of approximately three millimeters in diameter, in the form of small cubes of approximately three millimeters in side, in the form of pearls or powder: contained in a reserve from which these dosers draw volumetric or gravimetric doses to incorporate them into the basic product.

Mais ces doses, composées de plusieurs petits éléments ne peuvent pas être rigoureusement constantes car dans le cas de dosage volumétrique par vis doseuse sans fin ou par godets, les doses débitées par chaque tour de vis ou par chaque remplissaqe de godet, ne peuvent pas être à l'élément Près touiours identiques. However, these doses, made up of several small elements, cannot be strictly constant because in the case of volumetric dosing by endless dosing screw or by cups, the doses delivered by each turn of the screw or by each filling of the cup, cannot be to the Nearly identical elements.

Dans le cas de dosage gravimétrique la précision s'arrête au poids de l'élément près, car le doseur ne peut pas fractionner un élément afin de parfaire une dose. In the case of gravimetric dosing, precision stops at the weight of the element, because the dispenser cannot split an element in order to perfect a dose.

De plus ces doseurs présentent d'autres inconvénients: - ils sont incapables d'effectuer des dosages précis à l'élément
unitaire près - ils sont d'un prix de revient élevé - leur nettoyage est difficile - lors des changements de fabrication, les restes de mélange
additif plus matière de base sont perdus ou alors récupérés et
stockés pour être réutilisés lors d'une fabrication ultérieure
souvent peu probable - les additifs étant d'un prix de revient élevé, les pertes
inhérentes à ces doseurs grèvent les coûts de fabrication
Contrairement aux doseurs connus qui utilisent des additifs en vrac, le doseur suivant l'invention utilise des additifs constitués sous forme d'un ionc de longueur continue et de section constante. débité élément par élément directement sur la machine de fabrication du produit final.In addition, these dosers have other drawbacks: - they are unable to carry out precise dosages to the element
unitary close - they are of a high cost price - their cleaning is difficult - during changes of manufacture, the remains of mixture
additive plus base material are lost or then recovered and
stored for reuse during subsequent manufacturing
often unlikely - since additives are expensive, losses
inherent in these dosers add to manufacturing costs
Unlike known dosers which use additives in bulk, the doser according to the invention uses additives constituted in the form of an ion of continuous length and constant section. debited element by element directly on the machine for manufacturing the final product.

Selon une des formes de l'invention, non limitative et appliquée à la mise en oeuvre des matières plastiques. le doseur forme un ensemble indépendant pouvant s'adapter aux machines de production telles que: presses à injecter. extrudeuses, calandres etc. I1 se compose d'un carter (1) placé sous la trémie (2) d'une extrudeuse ou d'une presse à injecter dans laquelle se trouve la matière de base (11). L'additif à doser est constitué d'un jonc (3) de grande longueur et de section constante enroulé sur une bobine (4) ou bien lové dans un fût (5). Des galets presseurs (6) entrainés par un moteur (7) tirent le jonc (3) et le poussent dans un guide calibré (8). Une poulie (15) tâte en permanence la présence du ionc et actionne une alarme dès qu'il y a un manque d'alimentation. According to one of the forms of the invention, nonlimiting and applied to the use of plastics. the dispenser forms an independent unit which can be adapted to production machines such as: injection presses. extruders, calenders etc. I1 consists of a housing (1) placed under the hopper (2) of an extruder or an injection molding machine in which the base material (11) is located. The additive to be dosed consists of a rod (3) of great length and of constant section wound on a coil (4) or else coiled in a barrel (5). Pressure rollers (6) driven by a motor (7) pull the rod (3) and push it into a calibrated guide (8). A pulley (15) continuously checks for the presence of the ionc and activates an alarm as soon as there is a lack of power.

Le moteur d'entraînement des galets (7) du type à vitesse variable est piloté par un ensemble électronique de contrôle et d'asservissement contenu dans le coffret (9) assurant une avance continue ou saccadée du jonc (3) parfaitement maîtrisée et synchronisée avec la vitesse de rotation de la vis (10) de l'extrudeuse ou de la vis de la presse à injecter ou de tout autre système; la vis (10) s'alimentant de la matière de base (11) contenue dans la trémie (2). The roller drive motor (7) of the variable speed type is controlled by an electronic control and servo unit contained in the box (9) ensuring continuous or jerky advance of the rod (3) perfectly controlled and synchronized with the speed of rotation of the screw (10) of the extruder or of the screw of the injection molding machine or any other system; the screw (10) feeding on the base material (11) contained in the hopper (2).

Une lame rotative (12) actionnée par un moteur (13) lequel est commandé par le même ensemble contenu dans le coffret (9) vient couper la longueur de jonc (14) qui dépasse du guide (8). A rotary blade (12) actuated by a motor (13) which is controlled by the same assembly contained in the box (9) comes to cut the length of rod (14) which protrudes from the guide (8).

Cette coupe vient naturellement s'incorporer à la matière de base (11) et le tout est entraîné par la vis (10) qui effectue le mélange et la plastification des deux produits.This cut is naturally incorporated into the base material (11) and the whole is driven by the screw (10) which performs the mixing and plasticization of the two products.

En variante, le moteur (13) peut être remplacé par un électro-aimant actionnant la lame de coupe d'un mouvement alternatif.  Alternatively, the motor (13) can be replaced by an electromagnet actuating the cutting blade with an alternating movement.

Dans le cas d'additifs trop durs Pour être couPés avec une lame, le jonc sera débité en copeaux à sa sortie du guide (8) par une fraise rotative actionnée par un moteur. In the case of additives that are too hard to be cut with a blade, the rod will be cut into chips at its exit from the guide (8) by a rotary milling cutter actuated by a motor.

Le doseur suivant l'invention peut alimenter toutes extrudeuses, presses à injecter, calandres ou toute autre machine, par éléments unitaires parfaitement identiques et aux cadences souhaitées, chaque élément étant Prélevé sur le ionc (3), de la taille désirée si petite fut elle et même infinitésimale, ce qui est inaccessible aux autres doseurs. Un autre avantage du doseur suivant l'invention est de pouvoir obtenir la granulométrie la mieux adaptée en faisant varier la vitesse du moteur de coupe (13) tout en respectant le débit sui lui est fonction de la vitesse du moteur de tiraqe (7). The metering device according to the invention can supply all extruders, injection molding machines, calenders or any other machine, by perfectly identical unit elements and at the desired rates, each element being taken from the ionc (3), of the desired size if it were small. and even infinitesimal, which is inaccessible to other dispensers. Another advantage of the metering device according to the invention is to be able to obtain the most suitable particle size by varying the speed of the cutting motor (13) while respecting the flow rate which is a function of the speed of the pulling motor (7).

Suivant une variante, les additifs en poudre ou liquides, peuvent aussi être dosés avec la même précision et les mêmes avantages, par encapsulage à l'intérieur d'un tube de faible diamètre, constitué d'une matière compatible avec la matière de base. Le tube ainsi garni se comportera comme le jonc plein et sera découpé in situ, ce qui évitera des inconvénients tels que: pollution, collage, phénomène de voûte etc. According to a variant, the powder or liquid additives can also be dosed with the same precision and the same advantages, by encapsulation inside a tube of small diameter, made of a material compatible with the base material. The tube thus filled will behave like the solid rod and will be cut in situ, which will avoid drawbacks such as: pollution, bonding, arch phenomenon etc.

Connaissant la section du jonc et sa densité, il est facile de déterminer la vitesse linéaire d'avancement du ionc et maîtriser ainsi le dosage de l'additif. Knowing the section of the rod and its density, it is easy to determine the linear speed of advance of the ionc and thus control the dosage of the additive.

Dans le but d'obtenir des couleurs ou des caractéristiques spécifiques, on peut superposer sur une même machine, deux ou plusieurs doseurs alimentés avec des joncs ou des tubes garnis, de compositions différentes. In order to obtain specific colors or characteristics, two or more dispensers supplied with rods or filled tubes, of different compositions, can be superimposed on the same machine.

Les avantages du doseur suivant l'invention sont nombreux: - précision rigoureuse du dosage - faible encombrement de l'appareil - facilement adaptable aux machines de production - consommation d'additifs rigoureusement limitée aux besoins - absence de pollution - nettoyage rapide - stockage facile et propre des additifs  The advantages of the metering device according to the invention are numerous: - rigorous dosing precision - small size of the device - easily adaptable to production machines - consumption of additives strictly limited to requirements - absence of pollution - rapid cleaning - easy storage and clean additives

Claims (6)

REVENDICATIONS 1) Appareil destiné à doser des colorants concentrés ou autres additifs constitués sous forme de joncs de longueur continue et de section constante caractérisé en ce qu'il comporte: montée sur un carter (1) une lame rotative (12) entraînée par un moteur (3) pratiquant sur le jonc (3) des coupes unitaires et successives (14); un guide (8) à l'intérieur duquel le jonc (3) est poussé par un jeu de galets presseurs (6) entraînés par un moteur (7). 1) Apparatus intended for dosing concentrated dyes or other additives constituted in the form of rods of continuous length and of constant section characterized in that it comprises: mounted on a casing (1) a rotary blade (12) driven by a motor ( 3) making unitary and successive cuts (14) on the rod (3); a guide (8) inside which the rod (3) is pushed by a set of pressure rollers (6) driven by a motor (7). 2) Appareil suivant la revendication 1 caractérisé en ce que placé en amont d'une machine de production (1) telle que presse à injecter ou extrudeuse, les coupes (14) prélevées sur le jonc (3) se mélangent au flux de matière de base (11) provenant de la trémie (2). 2) Apparatus according to claim 1 characterized in that placed upstream of a production machine (1) such as injection press or extruder, the cuts (14) taken from the rod (3) mix with the material flow base (11) from the hopper (2). 3) Appareil suivant la revendication 2 caractérisé en ce que le moteur (13) et le moteur (7) sont pilotés par un ensemble électronique de variation de vitesse et d'asservissement (9) qui en régule les vitesses individuelles et les asservit à la machine de production. 3) Apparatus according to claim 2 characterized in that the motor (13) and the motor (7) are controlled by an electronic speed variation and servo-control assembly (9) which regulates the individual speeds and slaves them to the production machine. 4) Appareil suivant l'une quelconque des revendications 1 à 3 caractérisé en ce qu'il comporte une bobine (4) sur laquelle est enroulé le jonc (3). 4) Apparatus according to any one of claims 1 to 3 characterized in that it comprises a coil (4) on which is wound the rod (3). 5) Appareil suivant l'une quelconque des revendications 1 à 3 caractérisé en ce qu il comporte un fût (5) dans lequel est lové le jonc (3). 5) Apparatus according to any one of claims 1 to 3 characterized in that it comprises a barrel (5) in which is coiled the rod (3). 6) Appareil suivant les revendications 1 à 5 caractérisé en ce qu'il comporte une poulie (15) détectant la présence du jonc (3), et une alarme actionnée dès que la présence du jonc n'est plus détectée.  6) Apparatus according to claims 1 to 5 characterized in that it comprises a pulley (15) detecting the presence of the rod (3), and an alarm activated as soon as the presence of the rod is no longer detected.
FR9700350A 1997-01-09 1997-01-09 Dispenser for concentrated colouring matter or other additive, e.g. to plastic Pending FR2758096A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9700350A FR2758096A1 (en) 1997-01-09 1997-01-09 Dispenser for concentrated colouring matter or other additive, e.g. to plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9700350A FR2758096A1 (en) 1997-01-09 1997-01-09 Dispenser for concentrated colouring matter or other additive, e.g. to plastic

Publications (1)

Publication Number Publication Date
FR2758096A1 true FR2758096A1 (en) 1998-07-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR9700350A Pending FR2758096A1 (en) 1997-01-09 1997-01-09 Dispenser for concentrated colouring matter or other additive, e.g. to plastic

Country Status (1)

Country Link
FR (1) FR2758096A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2867100A1 (en) * 2004-03-05 2005-09-09 Gaillon Raw material supplied into machine, for transformation of thermoplastic/elastomeric material, where the raw material is formed by continuously feeding a material to the machine, fractionating the material and/or melting the raw material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2867100A1 (en) * 2004-03-05 2005-09-09 Gaillon Raw material supplied into machine, for transformation of thermoplastic/elastomeric material, where the raw material is formed by continuously feeding a material to the machine, fractionating the material and/or melting the raw material

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