EP0266447B1 - Dispositif de coupe rotatif, en particulier pour un granulateur de matière plastique - Google Patents

Dispositif de coupe rotatif, en particulier pour un granulateur de matière plastique Download PDF

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Publication number
EP0266447B1
EP0266447B1 EP86115293A EP86115293A EP0266447B1 EP 0266447 B1 EP0266447 B1 EP 0266447B1 EP 86115293 A EP86115293 A EP 86115293A EP 86115293 A EP86115293 A EP 86115293A EP 0266447 B1 EP0266447 B1 EP 0266447B1
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EP
European Patent Office
Prior art keywords
cutting
clamping
tool body
longitudinal groove
tool according
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Expired - Lifetime
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EP86115293A
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German (de)
English (en)
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EP0266447A1 (fr
Inventor
Hans Hench
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Individual
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Individual
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Priority to EP86115293A priority Critical patent/EP0266447B1/fr
Priority to DE8686115293T priority patent/DE3671605D1/de
Priority to AT86115293T priority patent/ATE53178T1/de
Publication of EP0266447A1 publication Critical patent/EP0266447A1/fr
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Publication of EP0266447B1 publication Critical patent/EP0266447B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/186—Axially elongated knives

Definitions

  • the invention relates to a concentric cutting tool, in particular for strand pelletizing of plastics, with the features of the preamble of patent claim 1.
  • a cutting tool in the form of a rasp with these features is known from FR-A 2 180 088.
  • the cutting elements which are designed in the manner of laterally limited parallel blades, are only held in a frictional manner in the longitudinal grooves between parallel clamping surfaces of the groove side wall and the clamping element.
  • high dynamic centrifugal stress there is therefore the risk that the cutting elements work radially forwards, which is inadmissible, for example, with a rotating cutting tool that is intended for strand pelletizing of plastics, because the cutting elements would run onto the fixed counter knife.
  • cutting elements in the form of V-shaped blow bars are inserted into the longitudinal grooves of the tool body and are fixed in position by means of wedge-shaped clamping or clamping elements. Because of the special design of these blow bars, they can only be pulled laterally out of the tool body after loosening the clamping or clamping elements, which is cumbersome and often requires large dismantling work of the associated machine for reasons of space.
  • two strip-like cutting elements are arranged in the lateral recesses of the two side walls of a longitudinal groove, which are clamped by an intermediate wedge, which is pulled towards the bottom of the longitudinal groove by a clamping screw penetrating it is.
  • the cutting elements are narrow strips which are delimited on the sides with parallel flanks and are not supported in the radial direction to the outside. It is therefore necessary to apply relatively large clamping forces from the wedge-shaped clamping element, which widens towards the circumference of the tool body, in order to ensure that the clamping elements are held securely by friction against the action of the centrifugal forces acting on them.
  • the narrow, strip-like, laterally parallel-flanked knives are in longitudinal grooves of rectangular cross-section Knife shaft body clamped.
  • wedge-shaped clamping elements are arranged in the longitudinal grooves behind the knives, a movable intermediate holder being held in the knife shaft body in a form-fitting manner between the knife and such a clamping element for transmitting the clamping force applied by the clamping element.
  • the clamping elements supported by compression springs against the bottom of the longitudinal groove are tapered in cross-section towards the circumference of the knife shaft body, so that they are pulled outwards under the influence of the centrifugal forces acting on them during operation and thus increase the clamping force for the knives.
  • the narrow knives are also held in this knife shaft in the radial direction without support only frictionally, the intermediate holder arranged in each longitudinal groove of the knife shaft body means an additional effort.
  • the object of the invention in contrast, is to provide a concentric cutting tool, in particular for strand pelletizing of plastics, which is distinguished by a particularly simple construction, allows easy and convenient replacement of the cutting elements from the circumferential side of the tool body and, moreover, above all a flawless, ensures secure holding of the cutting tools.
  • the wedge-shaped clamping element is clamped directly between the support surface of the cutting element and the opposite longitudinal groove side wall, there is no need for any intermediate holders or elements, so that the cutting element holder is of a very simple construction.
  • the radial support of the cutting elements towards the outside ensures that the centrifugal forces acting on it during operation are reliably excluded, so that there is always a correct and correct clamping of the cutting elements in the longitudinal grooves.
  • the assembly and replacement of the cutting elements from the circumferential side of the tool body are effortless: it is sufficient to use a suitable device to press the wedge-shaped clamping element radially inwards against the action of the clamping means or after loosening them in the respective longitudinal groove, thus reducing the cutting element from its radial support comes loose and can be removed freely from the longitudinal groove.
  • the new cutting element only needs to be inserted in the correct position, whereupon the clamping element is made effective, which is pressed radially outward by its clamping means into the wedge-shaped space between the supporting surface of the cutting element and the opposite longitudinal groove side wall and thus the clamping of the radially supported cutting element on the Tool body guaranteed.
  • the centrifugal forces then occurring during operation cannot lead to a release of the tension of the cutting elements; at most, they reinforce the clamping forces exerted by the clamping elements.
  • the seat surface is arranged with its track forming a secant to form a circle representing the outline of the tool body, so that on the one hand there are favorable cutting conditions for the cutting elements and on the other hand the radially directed centrifugal forces acting on them are perpendicular to the one
  • Have seat surface acting component that increases the pressure of the clamping surface of the cutting elements on the seat surface.
  • Suitable selection of the position of the plane containing the seat surface with respect to the axis of rotation of the tool body can achieve practically arbitrary clamping and support forces.
  • the support surface and the opposite longitudinal groove side wall can form a self-locking acute angle with one another, as a result of which the securing of the holder is further increased.
  • the seat is advantageously formed in or next to a recess of the tool body that extends laterally from the longitudinal groove, the bottom of which has an abutment for the cutting element. This ensures with simple means that after the insertion all cutting elements run with their cutting edges on a common circle of flies.
  • the bottom of the recess or areas of the tool body circumference can be designed as a contact surface for the cutting element, but embodiments are also conceivable in which adjustable adjusting elements are arranged in the arc of the longitudinal groove, which allow the system to be adjusted radially, in particular to coordinate the respective cutting element.
  • the clamping means pressing the clamping elements radially outward can have spring means, which in turn can expediently have at least one corrugated spring or at least one spring element made of an elastomeric material.
  • This spring element can be an elongated spring body which is inserted lengthways into the longitudinal groove, but embodiments are also conceivable in which the spring element is a spring pin which is arranged upright on the longitudinal groove base.
  • the spring element can also be at least one spring piston which acts against a gas cushion and acts in the manner of a gas spring.
  • each cutting element that projects into the longitudinal groove and is delimited by the clamping and supporting surface has an essentially wedge-shaped cross-sectional shape that tapers towards the circumference of the tool body.
  • the clamping and supporting surface can in turn have an acute angle of such a size that on the surfaces of the tool body and the clamping element interacting with them, i.e. the seat and the support surface, a self-locking effect occurs.
  • the two-legged cutting element has an essentially L-shaped cross section, at least one of its legs having a wedge-shaped cross-sectional shape.
  • the clamping surface is expediently arranged on the inner side of the associated leg.
  • the cutting element designed as an indexable cutting element can have two legs of the same design, each of which carries a cutting edge. It is also advantageous if the contact surface is arranged on the circumference of the tool body or a part connected to it next to the corresponding longitudinal groove.
  • the tool body can be solid at least in the outer circumferential areas, so that the longitudinal grooves are machined directly into the material of the tool body.
  • the longitudinal grooves are each formed in elongate cutting element carriers which are connected to the tool body or are arranged to form parts thereof.
  • the tool body consists of a number of coaxial, annular, axially braced sections and equipped with cutting elements, the cutting elements of which are butt-jointed at the parting joints of the sections, so that the axial length of the cutting tool result in continuous cutting edges.
  • the arrangement is such that adjacent sections on the facing end faces are rotatably connected to one another by fitting elements and spring parts acting in the axial direction are inserted between adjacent sections .
  • the tensioning means can also have at least one tensioning screw coupled to the tensioning element and / or the tool body or a part connected to it, which presses the tensioning element radially awake outward into the wedge-shaped tapering space.
  • tensioning screws can be present in addition to the spring means already mentioned, but embodiments are also conceivable in which the tensioning means are only formed by such tensioning screws.
  • the support surface of the cutting element is arranged in substantially flush alignment with the adjacent longitudinal groove side wall or only slightly protrudes beyond it into the groove interior.
  • FIG. 1 shows a rotary cutting tool according to the invention, in cross section, in detail and in a schematic representation, illustrating four different embodiments of the spring means assigned to the clamping elements
  • FIG. 2 shows a rotary cutting tool according to the invention, in cross section, in detail and in a schematic Representation, illustrating a modified embodiment of the cutting elements
  • Figure 3 shows the arrangement of Figure 2, illustrating another embodiment of the cutting elements in a corresponding representation
  • Figure 4 shows a multi-part tool body of a rotary cutting tool according to the invention, cut along the line IV-IV of the 5, in a side view
  • FIG. 5 the tool body according to FIG. 4, in a side view
  • FIG. 1 shows a rotary cutting tool according to the invention, in cross section, in detail and in a schematic representation, illustrating four different embodiments of the spring means assigned to the clamping elements
  • FIG. 2 shows a rotary cutting tool according to the invention, in cross section, in detail and in a schematic Representation, illustrating a modified embodiment of the cutting
  • FIG. 6 a cutting element carrier for use in the tool body according to FIG. 5, in a perspective view and in another dimension rod
  • FIG. 7 shows a rotary cutting tool composed of several tool bodies according to FIG. 4.5, according to the invention, in a top view, partially cut open and in a schematic representation
  • FIG. 8 shows two sections of a rotating cutting tool according to the invention, in a perspective schematic representation
  • FIGS 9, 10 shows a rotating cutting tool according to the invention, in cross section, in detail and in a schematic illustration, illustrating a modified embodiment of the cutting elements, and a clamping element of the arrangement according to FIG. 9, in a side view.
  • the rotary cutting tool shown in FIGS. 1-3 in detail has a solid, essentially sleeve-shaped or circular tool body 1, as is shown in principle in FIG.
  • This tool body 1 is intended - in particular together with other axially connecting, identical tool bodies 1 - to be arranged in a rotationally fixed manner on a shaft which at the end carries shaft journals with which the tool can be rotatably supported in corresponding bearings.
  • the cutting tool is used in particular for strand pelletizing of plastics and is excellently suitable for processing plastics which are difficult to granulate, for example those with admixtures of mineral fibers and the like.
  • the essentially cylindrical tool body 1 is formed on its circumference with a number of evenly distributed longitudinal grooves 2, which extend over the entire axial length of the tool body 1.
  • the longitudinal grooves 2 enclose a small angle of approximately 2 ° with the axis of rotation of the tool body 1, as is shown somewhat enlarged in FIG. 7 at 3.
  • a recess 4 extends laterally from each of the longitudinal grooves 2, which opens towards the circumference of the tool body 1 and whose side surface forms a seat surface 5 for a cutting element 6, 6a or 6b, which together with a clamping element 7 which is wedge-shaped in cross section, in the longitudinal groove 2 is housed.
  • the strip-like cutting elements 6, 6a, 6b preferably consist of hard metal, stellite or ceramic; they can be constructed in one or more parts, in which case cutting bars made of hard metal or the like are applied, for example soldered, to a corresponding carrier.
  • the cutting elements 6, 6a, 6b are basically arranged in the tool body 1 in such a way that their effective cutting edges 8 run on a common flight circle.
  • each of the cutting elements 6 is essentially L-shaped in cross section. It is therefore two-legged; his two legs are labeled 9 and 10.
  • the two legs 9, 10 are each essentially wedge-shaped in cross-section, the leg 10 lying in the longitudinal groove 2 having a wedge shape tapering towards the peripheral surface of the tool body 1. It is bounded on one side by a clamping surface 11 resting on the seat surface 5 and on the opposite side by a support surface 12 on which the wedge-shaped clamping element 7 acts, which in turn is supported against the side surface 13 of the longitudinal groove 2 opposite the support surface 12 .
  • the cutting element 6 With its leg 10, the cutting element 6 also lies on the base surface 14 of the associated recess 4, which thus forms a stop surface for the cutting element 6.
  • each cutting element 6 and the opposite longitudinal groove side wall 13 is tapered in a wedge shape towards the circumference of the tool body 1 educated.
  • the corresponding wedge-shaped clamping element 7, which tapers in the same direction, is pressed into this space by spring means which are arranged between the underside of the clamping element 7 and the bottom 15 of the longitudinal groove 2.
  • FIG. 1 Of these spring means, four different embodiments are illustrated in FIG. 1, which can be used alternatively:
  • the spring means are formed by at least one spring element made of an elastomeric material in the form of an elongated, cylindrical spring body 16, which is inserted lengthways into the longitudinal groove 2.
  • a corrugated or leaf spring 17 is inserted as the spring element in the longitudinal groove 2 adjoining on the right, while at least one spring piston 18 is arranged in the longitudinal groove 2 following on the right as spring means, which has a cylindrical piston neck 19 in a gas-filled cylinder space 20 formed in the tool body 1 protrudes, which is sealed against the piston neck via a corresponding sealing wall 21.
  • the spring piston 18 thus acting against a gas cushion is thus fundamentally similar to a gas spring.
  • the spring means are formed by spring pins 22 made of elastomeric material, which are inserted upright into corresponding bores 23 in the groove base 15.
  • each seat surface 5 is formed with its track a secant to a circle representing the outline of the tool body 1.
  • elements 6 in the radial direction attacking centrifugal forces therefore have a component that is perpendicular to the seat surface 5 and which strives to press the leg 10 with the clamping surface 11 against the seat surface 5.
  • the cutting elements 6 are supported radially on the tool body 1 by the inclined seating surfaces 5 and the cooperating, likewise inclined clamping surfaces 11.
  • each longitudinal groove encloses an acute angle, which results in a self-locking effect for the wedge-shaped clamping element 7, the size of which depends in individual cases on the material pairing that applies to the superimposed surfaces.
  • the clamping and support surface 11 and 12 of each cutting element 6 limit an acute angle of such a size that there is also a self-locking effect.
  • the clamping surface 11 of the cutting elements 6, which are essentially L-shaped in cross section, is arranged on the inner side of the associated leg 10.
  • the L-shaped cross-sectional shape of the cutting elements 6 brings with it the advantage of high stability of the cutting elements, while at the same time the area of the circumference of the tool body 1 which adjoins the cutting edge 8 in the cutting direction and which, according to experience, is particularly highly stressed, through the outer surface of the leg 9 of the respective hard metal, etc. existing cutting element is formed and is therefore particularly resistant.
  • flutes 24 are finally formed in the circumferential surface of the tool body 1 in the usual manner.
  • FIG. 2 differs from that according to FIG. 1 in that the cutting elements 6a are designed as so-called indexable cutting elements.
  • the two legs 9, 10 of the strip-like cutting elements 6a, which otherwise essentially correspond to the cutting elements 6, are both designed identically; each of them wears a cutting edge 8.
  • Each of the recesses 4 is designed with its seat 5 and its bottom surface 14 to match the shape of the two legs 9, 10, but the contact surface 14a is arranged next to the longitudinal groove 2 on the circumference of the tool body 1.
  • the same parts are therefore provided with the same reference numerals, so that a repeated discussion is unnecessary.
  • the strip-shaped cutting elements 6b are formed in one leg with an essentially wedge-shaped cross-sectional shape, the surfaces 11, 12 which laterally delimit the wedge shape being tapered radially outward.
  • the wedge-shaped clamping element 7 is arranged on the side of the leg 10 of the cutting element 6 or 6a facing away from the cutting edge 8, in the embodiment according to FIG. 3 the arrangement is such that the Clamping element 7 on the clamping surface 11 1 of the cutting element 6b containing the cutting edge 8, ie attacks on its front.
  • the tool body is designed in the manner of a so-called rotor 100.
  • the rotor 100 consists of a number of annular disks 30 which are clamped axially to one another by means of clamping bolts 31 in the manner shown in FIGS. 4 and 7.
  • the arrangement is such that 30 spacer sleeves 32 are arranged between the two external washers, through which the clamping screws 31 run, which are screwed into corresponding threaded bores 32 'of a centrally arranged hub disk 33, on which two further washers 30 rest on the end face.
  • the rotor 100 is covered on both end faces by cover caps 34 and, moreover, is placed on a shaft (not shown) in a rotationally fixed manner.
  • the ring disks 30 are provided on their circumference with open-edge grooves 200 which are aligned with one another over the axial length of the rotor 100.
  • Rail-shaped or strip-shaped cutting element carriers 35 as are illustrated in detail in FIG. 6, are inserted into the grooves 200 of adjacent annular disks 30.
  • Each of the cutting element supports 35 has two end flanges 36 which are substantially rectangular in cross section and which have holes 37 for fastening screws 38 which are screwed into corresponding threaded holes 39 on the bottom of the grooves 200 and are adapted to the shape of the grooves 200.
  • each cutting element carrier 35 is chamfered at 40 to ensure that the granulate produced can pass freely.
  • the cutting element carriers 35 are each designed with a continuous longitudinal groove 2, which has the cross-sectional shape shown in FIGS. 1-3 in the area between the end flanges 36. In it, the respective cutting element 6 (or 6a or 6b) is clamped by a wedge-shaped clamping element 7 in the manner shown in FIGS. 1 and 3.
  • the cutting element carriers 35 arranged on adjacent pairs of annular disks 30 are arranged with their cutting elements 6 butt-abutting, so that continuous cutting edges 8 result over the length of the rotor 100, which include the small angle 3 (FIG. 7) with the rotor axis of rotation 41.
  • Taper dowel pins 42 (FIG. 4) ensure an exact angular alignment of the ring disks 30 relative to one another.
  • the cutting tool consists of several coaxial sections, each of which is formed by a tool body 1, as has already been explained with reference to FIGS. 1-3.
  • These tool bodies 1 are non-rotatably mounted on a common shaft (not shown in FIG. 8) and axially clamped thereon, for example by a threaded ring.
  • a common shaft not shown in FIG. 8
  • axially parallel, cylindrical locating pins 44 and locating holes 45 associated therewith are arranged in the region of the end faces facing one another.
  • compression springs 47 are provided in corresponding bores 46, which strive to axially press the tool body 1 apart.
  • the radial support of the cutting elements 6, 6a, 6b on the tool body 1 or the cutting element carrier 35 can also take place in a form-fitting manner by means of an attachment 50 of the cutting element, as is schematically indicated in FIG. 1.
  • the cutting element 6, which is essentially L-shaped in cross section, is designed essentially as in FIG. 1.
  • the same parts are denoted here with the same reference numerals and are not explained in detail.
  • the recess 4 is so deep in the circumferential direction of the tool body 1 that the leg 10 of the cutting element 6 tapering in a wedge-shaped manner toward the circumferential surface of the tool body 1 is received essentially entirely in the recess 4.
  • Its support surface 12 projects only slightly beyond the adjacent longitudinal groove side wall into the interior of the longitudinal groove 2.
  • the tensioning element 7 with a laterally projecting shoulder resting on the support surface 12, it could also be aligned with the adjacent longitudinal groove side wall.
  • the wedge-shaped clamping element 7 has two bores 52 arranged at a distance, which open to the circumference of the tool body 1 and each of which receives a clamping screw 51.
  • the clamping screw 51 is screwed into a threaded bore 53 in the bottom of the bore 52 and is supported against the bottom 15 of the longitudinal groove 2.
  • Spring elements can be arranged between the tensioning screws 51, as explained in detail with reference to FIG. 1, but it is also possible to dispense with these spring elements in certain applications.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Milling Processes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (21)

1. Outil de coupe rotatif, en particulier pour la granulation de matières plastiques, comprenant un corps d'outil (1, 100) cylindrique qui présente une pluralité de rainures longitudinales (2) réparties régulièrement en direction circonférentielle, chacune des rainures contenant un élément de coupe (6, 6a, 6b) en forme de barrette rapporté de manière amovible et un élément de serrage (7) de section transversale en forme de coin qui est disposé dans l'espace, se rétrécissant en forme de coin en direction du pourtour du corps d'outil (1), situé entre une surface d'appui (12) de l'élément de coupe et la paroi latérale (13) de la rainure longitudinale, opposée à ladite surface d'appui, qui présente en coupe transversale une forme de coin correspondante se rétrécissant dans la même direction et est enfoncé radialement vers l'extérieur par des moyens de serrage (16, 17, 18, 22) prenant appui dans la zone du fond (15) de la rainure longitudinale, dans l'espace se rétrécissant en forme de coin, l'élément de coupe étant serré par une surface de serrage (11) éloignée de l'élément de serrage contre une surface de portée (5) dans la zone de la rainure longitudinale, caractérisé en ce que la partie de l'élément de coupe qui pénètre dans la rainure longitudinale du corps d'outil ou d'une pièce (35) reliée audit corps et est délimitée par la surface de serrage et d'appui (11, 12) présente une section transversale essentiellement en forme de coin qui se rétrécit en direction du pourtour du corps d'outil (1, 100) et dont la largeur maximale est inférieure à la largeur d'ouverture de la rainure longitudinale et en ce que le corps d'outil ou la pièce (35) reliée audit corps présente une surface d'application (14, 140) pour l'élément de coupe, déterminant la position radiale des éléments de coupe.
2. Outil de coupe selon la revendication 1, caractérisé en ce que la surface de portée (5) est disposée de manière à ce que la surface de portée (5) est disposée de manière à ce que sa trajectoire forme une sécante par rapport à un cercle représentant le contour du corps d'outil.
3. Outil de coupe selon la revendication 1 ou 2, caractérisé en ce que la surface d'appui (12) et la paroi latérale (13) opposée de la rainure longitudinale font l'une avec l'autre un angle aigu provoquant un auto-blocage.
4. Outil de coupe selon l'une des revendications précédentes, caractérisé en ce que la surface de portée (5) est réalisée dans ou à côté d'un évidement (4) qui part latéralement de la rainure longitudinale (2) du corps d'outil (1) ou d'une pièce (35) reliée audit corps et dont le fond (14) présente une surface d'application pour l'élément de coupe (6, 6a, 6b).
5. Outil de coupe selon la revendication 4, caractérisé en ce que l'évidement (4) ou le corps d'outil (1) présente la surface d'application (14, 14a) pour l'élément de coupe (6, 6a, 6b).
6. Outil de coupe selon l'une des revendications précédentes, caractérisé en ce que les moyens de serrage présentent des moyens de ressort (16, 17, 18, 22).
7. Outil de coupe selon l'une des revendications précédentes, caractérisé en ce que les moyens de ressort présentent au moins un ressort ondulé (17).
8. Outil de coupe selon la revendication 6, caractérisé en ce que les moyens de ressort présentent au moins un élément de ressort (16, 22) constitué d'un matériau élastomère.
9. Outil de coupe selon la revendication 8, caractérisé en ce que l'élément de ressort est un corps de ressort (16) allongé qui est inséré en longueur dans la rainure longitudinale (2).
10. Outil de coupe selon la revendication 8, caractérisé en ce que l'élément de ressort est un tenon (22) qui est disposé debout sur le fond (15) de la rainure longitudinale.
11. Outil de coupe selon la revendication 8, caractérisé en ce que l'élément de ressort est un piston (18) agissant à l'encontre l'un coussin de gaz.
12. Outil de coupe selon la revendication 1, caractérisé en ce que les surfaces de serrage et d'appui (11, 12) font un angle aigu qui provoque un auto-blocage en coopérant avec les surfaces associées du corps d'outil (1) ou d'une pièce (35) reliée audit corps.
13. Outil de coupe selon la revendication 1, caractérisé en ce que l'élément de coupe (6, 6a) à deux ailes possède une section transversale essentiellement en L et au moins l'une de ses ailes (10) présente la section transversale se rétrécissant en forme de coin.
14. Outil de coupe selon la revendication 1, caractérisé en ce que la surface de serrage (11) est disposée sur le côté intérieur de l'aile (10) associée.
15. Outil de coupe selon les revendications 5 et 13, caractérisé en ce que la surface d'application (14a) est disposée sur le pourtour du corps d'outil (1) ou d'une pièce (35) reliée audit corps, à côté de la rainure longitudinale correspondante.
16. Outil de coupe selon la revendication 12 ou 14, caractérisé en ce que l'élément de coupe (6a) réalisé sous forme d'élément de coupe réversible présente deux ailes (9, 10) de même configuration qui portent chacune un tranchant (8).
17. Outil de coupe selon l'une des revendications précédentes, caractérisé en ce que les rainures longitudinales (2) sont réalisées chacune dans des supports d'élément de coupe allongés (35) qui sont reliés au corps d'outil (1, 100) ou sont disposés de manière à former des parties dudit corps.
18. Outil de coupe selon l'une des revendications précédentes, caractérisé en ce qu'il est composé d'une pluralité de tronçons (1) coaxiaux, en forme de couronne circulaire, serrés axialement les uns contre les autres et équipés d'éléments de coupe (6, 6a, 6b) qui sont disposés bout à bout aux joints des tronçons, en ce que des tronçons (1) voisins sont, sur les côtés frontaux se faisant face, reliés les uns aux autres par des éléments d'ajustage (44, 45) de manière à être solidaires en rotation et en ce que des éléments de ressort (47) agissant en direction axiale sont insérées entre des tronçons (1) voisins.
19. Outil de coupe selon l'une des revendications précédentes, caractérisé en ce que les moyens de serrage présentent au moins une vis de serrage (51) couplée à l'élément de serrage (7) et/ou au corps d'outil (1) ou à une pièce reliée audit corps.
20. Outil de coupe selon la revendication 19, caractérisé en ce que chaque vis de serrage (51) est engagé dans un trou (52) de l'élément de serrage s'ouvrant en direction du pourtour du corps d'outil et prend appui sur le fond de la rainure longitudinale (2).
21. Outil de coupe selon l'une des revendications précédentes, caractérisé en ce que la surface d'appui (12) de l'élément de coupe (6, 6a, 6b) est disposée essentiellement au ras de la paroi latérale voisine de la rainure longitudinale ou de manière à ne dépasser que légèrement de ladite paroi à l'intérieur de la rainure.
EP86115293A 1986-11-05 1986-11-05 Dispositif de coupe rotatif, en particulier pour un granulateur de matière plastique Expired - Lifetime EP0266447B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP86115293A EP0266447B1 (fr) 1986-11-05 1986-11-05 Dispositif de coupe rotatif, en particulier pour un granulateur de matière plastique
DE8686115293T DE3671605D1 (de) 1986-11-05 1986-11-05 Rundlaufendes schneidwerkzeug, insbesondere zum stranggranulieren von kunststoffen.
AT86115293T ATE53178T1 (de) 1986-11-05 1986-11-05 Rundlaufendes schneidwerkzeug, insbesondere zum stranggranulieren von kunststoffen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86115293A EP0266447B1 (fr) 1986-11-05 1986-11-05 Dispositif de coupe rotatif, en particulier pour un granulateur de matière plastique

Publications (2)

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EP0266447A1 EP0266447A1 (fr) 1988-05-11
EP0266447B1 true EP0266447B1 (fr) 1990-05-30

Family

ID=8195567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115293A Expired - Lifetime EP0266447B1 (fr) 1986-11-05 1986-11-05 Dispositif de coupe rotatif, en particulier pour un granulateur de matière plastique

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EP (1) EP0266447B1 (fr)
AT (1) ATE53178T1 (fr)
DE (1) DE3671605D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006042255A1 (de) * 2006-09-08 2008-03-27 Komptech Gmbh Zerkleinerer

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Publication number Priority date Publication date Assignee Title
DE3886037D1 (de) * 1988-06-02 1994-01-13 Hench Hans Rundlaufendes Schneidwerkzeug, insbesondere zum Stranggranulieren von Kunststoffen.
DE58905321D1 (de) * 1989-01-03 1993-09-23 Hans Hench Umlaufendes schneidwerkzeug, insbesondere zum stranggranulieren von kunststoffen.
US5042733A (en) * 1990-08-06 1991-08-27 Hans Hench Rotary cutter, particularly for granulating plastic material
ATE235317T1 (de) 1998-05-12 2003-04-15 Holz Metall Abfall Recyclingte Messersitzanordnung an einer schneidwelle in einer zerkleinerungsmaschine
CN103120977B (zh) * 2013-03-27 2014-09-10 湖南朝晖环境科技有限公司 一种多爪废料破碎机用组合便拆式刀具

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DE930839C (de) * 1951-10-11 1955-07-25 Westfalia Dinnendahl Groeppel Rotor fuer Schleudermuehlen
US2747803A (en) * 1952-07-09 1956-05-29 Pettibone Mulliken Corp Hammer rotor for hammermills
NL7015532A (fr) * 1970-10-23 1972-04-25
DE2208687B1 (de) * 1972-02-24 1973-06-14 Hombak Maschinenfab Kg Messerwelle für Holzbearbeitungsmaschinen
NL7205104A (fr) * 1972-04-14 1973-10-16
DE2308981A1 (de) * 1973-02-23 1974-09-05 Kampf Maschf Erwin Bandgranuliermaschine
CH584067A5 (fr) * 1974-03-15 1977-01-31 Andreas E Dr Hazemag Kg
CA1040072A (fr) * 1975-07-14 1978-10-10 Arnold Schmidt Arbre porte-outil pour machine a bois
US4360168A (en) * 1978-12-21 1982-11-23 Conair, Inc. Rotary blade assembly for pelletizer assembly
US4219291A (en) * 1979-03-14 1980-08-26 Hoeh James A Segmented helical rotary cutter and method of making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006042255A1 (de) * 2006-09-08 2008-03-27 Komptech Gmbh Zerkleinerer
DE102006042255B4 (de) * 2006-09-08 2014-02-13 Komptech Gmbh Zerkleinerer

Also Published As

Publication number Publication date
DE3671605D1 (de) 1990-07-05
ATE53178T1 (de) 1990-06-15
EP0266447A1 (fr) 1988-05-11

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