EP0588838B1 - Device for burring and dusting tablets or pills - Google Patents
Device for burring and dusting tablets or pills Download PDFInfo
- Publication number
- EP0588838B1 EP0588838B1 EP92911094A EP92911094A EP0588838B1 EP 0588838 B1 EP0588838 B1 EP 0588838B1 EP 92911094 A EP92911094 A EP 92911094A EP 92911094 A EP92911094 A EP 92911094A EP 0588838 B1 EP0588838 B1 EP 0588838B1
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- European Patent Office
- Prior art keywords
- sieve drum
- tablets
- pills
- segments
- drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
Definitions
- the invention relates to a device for deburring and dusting tablets or pills fed from a tablet press according to the preamble of claim 1.
- the tablets or pills produced by a tablet press in the pharmaceutical industry have a usually circumferential burr, which must be removed in further processing steps.
- the sieve drum is rotatable and inclined so that when the sieve drum rotates, the tablets or pills are conveyed through the drum due to gravity and the burrs are mutually ground due to the constant friction of the tablets or pills against one another.
- the known drums have the disadvantage that they have to be relatively long for the tablets to be properly deburred in order to ensure that the tablets move within the sieve drum for a sufficiently long time.
- the known drums adequately deburr only after a long throughput time, because the tablets are not sufficiently circulated within the drums, but often entire collections (pulks) of tablets or pills are only pushed forward without the individual tablets or pills dissolving the accumulation in one own rotation movement and without sufficiently pushing each other.
- These known sieve drums also do not isolate the tablets enough after deburring and dust removal within the sieve drum if the tablets are to be fed to a switch.
- a sieve drum with longitudinally extending baffles for processing bulk material with a rotating sieve drum has become known, in which the baffle plates represent deflecting surfaces which have a triangular cross section and enable the bulk material to be deflected. If bulk goods exceed the deflection surfaces, the individual parts slide downwards on the inclined surfaces of the deflection plates, but without pushing and rubbing against each other.
- a drum mill for polishing the surface of metal articles to remove burrs or similar surface roughness has become known from US-A-2 420 748. Inside the drum are two diagonally wound baffles that form falling edges over which the articles fall when the drum rotates; there are also abrasive balls in the drum. When turning the drum, the articles are constantly plowed up together with the balls due to the guide plates and thus polish each other.
- a rotating drum for scrubbing, mixing, cooling or drying mixed materials or gases has become known, in which the drum shell consists of individual cylinder segments which overlap in a scale-like manner and which each oscillate about an axis parallel to the drum axis are adjustable so that they can be moved in or out and so the intermediate channels formed by them can be expanded or narrowed until they close completely.
- the invention is based on the object to provide a device with which tablets or pills can be completely deburred and / or dedusted over the shortest distance; on the other hand, the tablets or pills should be sufficiently separated after deburring and dedusting towards the end of the sieve drum; in addition, the sieve drum should be able to be emptied and cleaned quickly and easily when the tablets or pills are changed.
- the jacket of the screen drum consists of two angled sections which are angled to form longitudinal, continuous surfaces to the central axis of the screen drum, are arranged in the longitudinal direction of the screen drum and are mutually offset and each section is half of the Sheath forms, the respective adjacent longitudinal edges of the sections run with each leaving an outwardly open longitudinal gap (a) over the length of the sections, which is wider than the largest diameter of the individual tablet or pill, the inner longitudinal edges of the sections forming falling edges, over which the tablets slide while the sieve drum is rotating and fall onto the section of the casing underneath.
- the surfaces of the sections are advantageously flat or slightly concave, two of the flat or slightly concave surfaces, the respective end surfaces, being plane-parallel or run practically plane-parallel to each other and enclose a surface running perpendicular to it. Further refinements of the invention are presented in the subclaims.
- the device according to the invention has the advantage that with this relatively small-volume, loose bulk goods of a general nature, in particular tablets or pills or suppositories from a press, they are completely and quickly rubbed off, such as deburred and / or dedusted, only a short path being necessary for this .
- deburring and dedusting while the sieve drum is rotating, the individual objects of the bulk material fall down one or more falling edges with each rotation of the drum.
- the flat or slightly concave curved surfaces of the sections cause the tablets to fall when falling from the step onto an inclined plane, namely the underlying surface of the second section, which becomes steeper as the sieve drum rotates, so that the tablets are also transverse to Longitudinal axis of the sieve drum constantly run down an inclined plane and constantly fall into and over one another.
- the sieve drum is used at the same time to convey the tablets or pills through it, for example, this can take the form of an inclined plane be inclined, which is filled from the upper end, which can be connected to the screen drum connected to a cylindrical tube piece.
- This has the advantage that accumulations of tablets or pills are dissolved during the rotary movement of the sieve drum and the tube piece, so that the tablets or pills occasionally migrate to a switch located at the end of the tube piece due to gravity.
- the tube piece thus acts as a pulsation damper, which dampens the more or less pulsed leaving the objects from the screening drum and causes a desired separation.
- the sections each consist of five flat surfaces, with an obliquely extending surface adjoining the end surfaces running parallel to one another, each having a different width.
- the rotary movement of the sieve drum can also advantageously take place in a large number of small, predeterminable steps of small to very small rotation angles per step, which are impressed on the sieve drum as more or less easy rattling or as vibration, which increases the friction between the tablets and the separation of the tablets Tablets additionally supported.
- the stepper motor can, for example, regulate between 1 and 10 steps per second, the sieve drum, for example, between 0.1 and 10 U / sec. In this way, tablets or pills can be processed completely according to the specific parameters of the tablets or pills.
- the sieve drum is given no or only a slight vibration; in the case of hard objects, an appropriately adapted vibration; in addition, the speed of rotation of the screen drum can be adjusted accordingly.
- a sieve drum 25 is rotatably mounted about an axis of rotation, the sieve drum 25 being arranged at an incline in the form of an inclined plane due to gravity to convey the objects of the bulk material can be.
- the jacket of the screen drum 25 is open-spiral curved and can consist of one piece, so that the two edges 26 and 27, preferably along a jacket line, face each other at a distance b and overlap and form a longitudinal gap b therebetween.
- the sieve drum 25 rotates in the direction of the curved arrow 32 in a clockwise direction such that the tablets always fall from the inner longitudinal edge 26 as a falling edge onto the underlying surface of the casing at the level of the lower or outer longitudinal edge 27.
- the inner longitudinal edge 26 forms a falling edge for the tablets or pills, which fall further when the drum rotates further, i.e. the distance between the inner longitudinal edge 26 and the outer longitudinal edge 27, due to the rotation the sieve drum 25, the later falling tablets, overtake the previously fallen tablets, so that the tablets are accelerated differently and the tablets are constantly moved and rubbed against each other, in particular the tablets being constantly moved about one of their axes.
- any build-up of tablets in which the tablets no longer move relative to one another is prevented within the sieve drum and / or is continuously dissolved again.
- the tablets thus move down the inclined plane within the sieve drum 25 and reach a switch (not shown), from which they are processed and from which the tablets or pills are either a metal detection station or a testing device for testing the Tablets are fed according to specific parameters.
- Figures 1 and 2 show an example of a technical embodiment of the device.
- This consists of an elongated cylindrical sieve drum 2, the casing of the sieve drum 2 consisting of two sections 3, 4 with holes 6, so that the sections 3, 4 are completely sieved.
- the sections 3, 4 are held at both ends in retaining rings 7, 8, which in turn are preferably centrally supported and stabilized with one another by longitudinal rods 16, 16 ', 16'',16'''.
- the retaining ring 7 carries a ring gear 10 for rotating the sieve drum 2, the retaining ring 8 has a circumferential groove 11 into which a wheel (not shown) engages for the exact guidance of the sieve drum 2.
- a cylindrical pipe section 9 connects to the screening drum 2 or to the retaining ring 8, which is connected centrally to the screening drum 2 and which serves as a pulsation damper. Through this pipe section 9, accumulations or groups of tablets are effectively dissolved during the transition from the screening drum into the pipe section 9 and the tablets are separated.
- the length of the tube 9 in relation to the length of the screening drum 2 is preferably between one fifth and one third.
- the screening drum 2 is installed in a preferably closed, shell-shaped or cylindrical housing 1, which has an inclined bottom 5 with an outlet funnel 14 for suctioning off the dust or the bulk material.
- the housing 1 has a filling funnel 15 which projects through the front cover surface of the screening drum 2 into the same for filling the screening drum 2.
- the sieve drum 2 is preferably arranged obliquely, the filling funnel 15 being arranged at the upper end and the pipe section 9 at the lower end of the sieve drum 2.
- the tablets, pills or the bulk material thus pass through the screening drum 2 due to gravity and the circulating movements.
- the jacket of the screening drum 2 consists of two sections 3, 4, each of which is in principle a U-rail.
- the sections 3, 4 preferably consist of five oblong-flat surfaces 18, 19, 20, 21, 22 which are angled, the surfaces 18 and 21, the end surfaces being parallel to one another and perpendicular to the surface 20 lying therebetween.
- the surfaces 19, 22 represent beveled surfaces between the surfaces 18, 20 and 20, 21; those surfaces 19 and 22 of the sections 3, 4, which are inclined to the mutually perpendicular surfaces 18, 20, 21, have a different width.
- the sections 3, 4 are such that they are offset transversely to the central axis 17 of the screening drum 2 so that the longitudinal edge 23 of the surface 18 lies outside and the longitudinal edge 23 'of the surface 21 lies within the volume of the screening drum 2; or the longitudinal edge 24 of the section 4 lies inside and the longitudinal edge 24 'of the section 4 lies outside the volume; the longitudinal edges 23 and 24 or 23 'and 24' overlap.
- the sections can also consist of three flat surfaces, the transitions between the individual surfaces being formed by a curved surface.
- two longitudinal slots a are formed which are wider than the largest diameter of the individual object treated in the screening drum 2.
- the inside longitudinal edges 23 'and 24 falling edges for the tablets represent the height a falling twice per revolution onto the portion of the jacket wall lying underneath.
- the slots a form emptying slots for quick emptying of the screening drum 2 when it rotates in the opposite direction in the clockwise direction.
- the screening drum 2 can be quickly emptied and loaded with another bulk material; the bulk material emptied from the sieve drum into the housing is sucked off via the outlet funnel 14. This design also ensures easy cleaning and maintenance of the sieve drum.
- the device for drying and at the same time to carry out a drying air flow through the drum.
- the sections of the sieve drum can also be replaced by those made of non-perforated metal sheets.
- the object of the invention is preferably suitable for deburring and dedusting tablets or pills fed from a tablet press after the pressing process.
- the subject of the invention can also be used for the abrading or smoothing or dusting or drying treatment of loose, preferably relatively small-volume, bulk goods.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Medicinal Preparation (AREA)
- Glanulating (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Entgraten und Entstauben von aus einer Tablettenpresse zugeführten Tabletten oder Pillen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for deburring and dusting tablets or pills fed from a tablet press according to the preamble of
Die von einer Tablettenpresse in der pharmazeutischen Industrie hergestellten Tabletten oder Pillen besitzen aufgrund der Beschaffenheit der Presse einen gewöhnlich umlaufenden Grat, der in weiteren Bearbeitungsschritten entfernt werden muß. Hierfür ist es bekannt, die Tabletten in Siebtrommeln aufzugeben, die einen zylindrischen Mantel aus gelochtem Siebblech aufweisen und die Schneckengänge oder Drängelflächen aufweisen, um den Ausgabevorgang aus der Siebtrommel zu verzögern. Die Siebtrommel ist drehbar und geneigt angeordnet, so daß bei Drehung der Siebtrommel die Tabletten oder Pillen aufgrund der Schwerkraft durch die Trommel befördert werden und dabei aufgrund der ständigen Reibung der Tabletten oder Pillen aneinander die Grate gegenseitig abgeschliffen werden.Due to the nature of the press, the tablets or pills produced by a tablet press in the pharmaceutical industry have a usually circumferential burr, which must be removed in further processing steps. For this purpose, it is known to place the tablets in sieve drums which have a cylindrical casing made of perforated sieve plate and which have screw flights or thrust surfaces in order to delay the dispensing process from the sieve drum. The sieve drum is rotatable and inclined so that when the sieve drum rotates, the tablets or pills are conveyed through the drum due to gravity and the burrs are mutually ground due to the constant friction of the tablets or pills against one another.
Die bekannten Trommeln besitzen den Nachteil, daß sie für eine einwandfreie Entgratung der Tabletten relativ lang sein müssen um sicherzustellen, daß sich die Tabletten genügend lange innerhalb der Siebtrommel bewegen. Daneben entgraten die bekannten Trommeln ausreichend nur nach langer Durchlaufzeit, weil die Tabletten innerhalb der Trommeln nicht genügend umgewälzt werden, sondern oft ganze Ansammlungen (Pulks) von Tabletten oder Pillen nur vorgeschoben werden, ohne daß die einzelnen Tabletten oder Pillen zur Auflösung der Ansammlung in eine eigene Rotationsbewegung gelangen und ohne sich gegenseitig ausreichend zu drängeln. Auch vereinzeln diese bekannten Siebtrommeln die Tabletten nach dem Entgraten und Entstauben noch innerhalb der Siebtrommel zu wenig, wenn die Tabletten einer Weiche zugeführt werden sollen.The known drums have the disadvantage that they have to be relatively long for the tablets to be properly deburred in order to ensure that the tablets move within the sieve drum for a sufficiently long time. In addition, the known drums adequately deburr only after a long throughput time, because the tablets are not sufficiently circulated within the drums, but often entire collections (pulks) of tablets or pills are only pushed forward without the individual tablets or pills dissolving the accumulation in one own rotation movement and without sufficiently pushing each other. These known sieve drums also do not isolate the tablets enough after deburring and dust removal within the sieve drum if the tablets are to be fed to a switch.
Durch die US-A-2 210 584 ist eine Siebtrommel mit in Längsrichtung verlaufenden Ablenkblechen zur Bearbeitung von Schüttgut bei sich drehender Siebtrommel bekanntgeworden, bei der die Ablenkbleche Ablenkflächen darstellen, die einen dreiecksförmigen Querschnitt besitzen und ein Ablenken des Schüttgutes ermöglichen. Falls Schüttgüter die Ablenkflächen übersteigen, so rutschen die einzelnen Teile auf den schrägen Flächen der Ablenkbleche abwärts, jedoch ohne sich dabei ausreichend zu drängeln und aneinander zu reiben.From US-A-2 210 584, a sieve drum with longitudinally extending baffles for processing bulk material with a rotating sieve drum has become known, in which the baffle plates represent deflecting surfaces which have a triangular cross section and enable the bulk material to be deflected. If bulk goods exceed the deflection surfaces, the individual parts slide downwards on the inclined surfaces of the deflection plates, but without pushing and rubbing against each other.
Durch die US-A-2 420 748 ist eine Trommelmühle zum Polieren der Oberfläche von Metallartikeln bekannt geworden, um Grate oder ähnliche Oberflächenrauhigkeiten zu entfernen. Innerhalb der Trommel sind zwei schräg gewundene Leitbleche angeordnet, die Fallkanten bilden, über die die Artikel beim Drehen der Trommel fallen; ebenso befinden sich in der Trommel abrasiv wirkende Kugeln. Beim Drehen der Trommel werden die Artikel aufgrund der Leitbleche ständig mitsamt den Kugeln aufgepflügt und polieren sich so gegenseitig.A drum mill for polishing the surface of metal articles to remove burrs or similar surface roughness has become known from US-A-2 420 748. Inside the drum are two diagonally wound baffles that form falling edges over which the articles fall when the drum rotates; there are also abrasive balls in the drum. When turning the drum, the articles are constantly plowed up together with the balls due to the guide plates and thus polish each other.
Durch die DE-PS 357 882 ist eine rotierende Trommel zum Scheuern, Mischen, Kühlen oder Trocknen von Mischmaterialien oder Gasen bekanntgeworden, bei der der Trommelmantel aus schuppenförmig mit Abstand voneinander sich überdeckenden Einzelzylindersegmenten besteht, die je um eine zur Trommelachse parallele Achse schwing- und einstellbar sind, so daß sie ein- oder auswärts bewegbar sind und so die von ihnen gebildeten Zwischenkanäle erweitert oder bis zum gänzlichen Schließen verengt werden können.From DE-PS 357 882, a rotating drum for scrubbing, mixing, cooling or drying mixed materials or gases has become known, in which the drum shell consists of individual cylinder segments which overlap in a scale-like manner and which each oscillate about an axis parallel to the drum axis are adjustable so that they can be moved in or out and so the intermediate channels formed by them can be expanded or narrowed until they close completely.
Der Erfindung liegt einerseits die Aufgabe zugrunde, eine Vorrichtung zu schaffen, mit der auf kürzester Strecke Tabletten oder Pillen vollständig entgratet und/oder entstaubt werden können; andererseits sollen die Tabletten oder Pillen nach dem Entgraten und Entstauben zum Ende der Siebtrommel hin ausreichend vereinzelt werden; daneben soll die Siebtrommel bei einem Wechsel der Tabletten oder Pillen in einfacher Weise schnell entleert und gereinigt werden können.The invention is based on the object to provide a device with which tablets or pills can be completely deburred and / or dedusted over the shortest distance; on the other hand, the tablets or pills should be sufficiently separated after deburring and dedusting towards the end of the sieve drum; in addition, the sieve drum should be able to be emptied and cleaned quickly and easily when the tablets or pills are changed.
Die Lösung der Aufgabe besteht erfindungsgemäß darin, daß der Mantel der Siebtrommel aus zwei gewinkelten Teilstücken besteht, die unter Bildung von zur Mittelachse der Siebtrommel längs verlaufenden, zusammenhängenden Flächen abgewinkelt, in Längsrichtung der Siebtrommel angeordnet und zueinander quer versetzt sind und jedes Teilstück eine Hälfte des Mantels bildet, die jeweils benachbarten Längskanten der Teilstücke unter Belassung je eines nach außen offenen Längsspaltes (a) über die Länge der Teilstücke verlaufen, der breiter ist als der größte Durchmesser der einzelnen Tablette oder Pille, wobei die jeweils innenliegenden Längskanten der Teilstücke Fallkanten bilden, über die die Tabletten bei sich drehender Siebtrommel rutschen und auf das darunter liegende Teilstück des Mantels fallen. Vorteilhaft sind die Flächen der Teilstücke in sich eben oder leicht konkav gebogen, wobei von den ebenen bzw. leicht konkav gebogenen Flächen zwei Flächen, die jeweiligen Endflächen, planparallel oder praktisch planparallel zueinander verlaufen und eine senkrecht dazu verlaufende Fläche einschließen. Weitere Ausgestaltungen der Erfindung sind in den Unteransprüchen dargestellt.The solution to the problem is according to the invention that the jacket of the screen drum consists of two angled sections which are angled to form longitudinal, continuous surfaces to the central axis of the screen drum, are arranged in the longitudinal direction of the screen drum and are mutually offset and each section is half of the Sheath forms, the respective adjacent longitudinal edges of the sections run with each leaving an outwardly open longitudinal gap (a) over the length of the sections, which is wider than the largest diameter of the individual tablet or pill, the inner longitudinal edges of the sections forming falling edges, over which the tablets slide while the sieve drum is rotating and fall onto the section of the casing underneath. The surfaces of the sections are advantageously flat or slightly concave, two of the flat or slightly concave surfaces, the respective end surfaces, being plane-parallel or run practically plane-parallel to each other and enclose a surface running perpendicular to it. Further refinements of the invention are presented in the subclaims.
Die erfindungsgemäße Vorrichtung besitzt den Vorteil, daß mit dieser relativ kleinvolumige, lose Schüttgüter allgemeiner Art, insbesondere Tabletten oder Pillen oder Zäpfchen aus einer Presse, vollständig und schnell abreibend behandelt, wie entgratet und/oder entstaubt werden, wobei dafür nur ein kurzer Weg notwendig ist. Beim Entgraten und Entstauben während des Drehens der Siebtrommel stürzen die einzelnen Gegenstände des Schüttgutes bei jeder Umdrehung der Trommel eine oder mehrere Fallkanten herab. Aufgrund dieser Fallkanten und der Tatsache, daß die Flächen der Teilstücke in sich eben oder leicht konkav gekrümmt sind, wird vorteilhaft erreicht, daß sich die einzelnen Gegenstände des Schüttgutes gegenseitig überholen, so daß nachfolgende, später die Fallkante herabstürzende Gegenstände des Schüttgutes diejenigen Gegenstände, die schon vorher herabgefallen sind, überholen und somit jegliche Pulkbildung von Gegenständen innerhalb der Siebtrommel vermieden wird, sondern eine ständige Vermischung der Gegenstände unter ständiger gegenseitiger Reibung und Drängelung die Folge ist.The device according to the invention has the advantage that with this relatively small-volume, loose bulk goods of a general nature, in particular tablets or pills or suppositories from a press, they are completely and quickly rubbed off, such as deburred and / or dedusted, only a short path being necessary for this . When deburring and dedusting while the sieve drum is rotating, the individual objects of the bulk material fall down one or more falling edges with each rotation of the drum. Due to these falling edges and the fact that the surfaces of the sections are flat or slightly concave, it is advantageously achieved that the individual objects of the bulk material overtake each other, so that subsequent objects of the bulk material falling down later fall those objects that have already fallen down, overtake and thus any build-up of objects within the sieve drum is avoided, but the result is constant mixing of the objects with constant mutual friction and jostling.
Die ebenen oder leicht konkav gekrümmten Flächen der Teilstücke bewirken, daß die Tabletten beim Herunterfallen von der Stufe auf eine schiefe Ebene fallen, nämlich die darunterliegende Fläche des zweiten Teilstücks, die mit fortschreitender Drehung der Siebtrommel immer steiler wird, so daß die Tabletten zusätzlich quer zur Längsachse der Siebtrommel ständig eine schiefe Ebene herablaufen und ständig ineinander- und übereinanderstürzen.The flat or slightly concave curved surfaces of the sections cause the tablets to fall when falling from the step onto an inclined plane, namely the underlying surface of the second section, which becomes steeper as the sieve drum rotates, so that the tablets are also transverse to Longitudinal axis of the sieve drum constantly run down an inclined plane and constantly fall into and over one another.
Insbesondere bewirkt dieses Übereinanderstürzen und gegenseitige Überholen von Tabletten oder Pillen nach dem Prinzip "die Ersten werden die Letzten sein'', daß während des Dreh- und Fördervorganges die Tabletten oder Pillen auf schonende Weise ständig um eine ihrer Achsen rotieren und unterschiedlich beschleunigt werden, durcheinanderfallen und sich überholen und sich somit ständig vermischen. Dadurch ist ein sicherer, aber trotzdem schonender Abrieb der Grate der Tabletten oder Pillen während des Drehens der Siebtrommel gewährleistet, wobei der Abrieb aufgrund der Vorgabe der Drehgeschwindigkeit der Siebtrommel steuerbar ist.In particular, this overturning and mutual overtaking of tablets or pills according to the principle "the first will be the last" 'means that during the turning and conveying process, the tablets or pills rotate gently around one of their axes and are accelerated differently, falling apart and overtake and thus constantly mix in. This ensures a safe, but nevertheless gentle abrasion of the burrs of the tablets or pills during the rotation of the sieve drum, the abrasion being controllable on the basis of the rotational speed of the sieve drum.
Dient die Siebtrommel gleichzeitig zum Durchfördern der beispielsweise Tabletten oder Pillen durch dieselbe, so kann diese in Form einer schiefen Ebene geneigt sein, die vom oberen Ende befüllt wird, wobei sich an die Siebtrommel ein mit dieser verbundenes zylindrisches Rohrstück anschließen kann. Dadurch wird der Vorteil erzielt, daß während der Drehbewegung der Siebtrommel und des Rohrstücks Ansammlungen von Tabletten oder Pillen aufgelöst werden, so daß die Tabletten oder Pillen aufgrund der Schwerkraft vereinzelt einer am Ende des Rohrstückes befindlichen Weiche zuwandern. Das Rohrstück wirkt somit als Pulsationsdämpfer, der das mehr oder weniger pulsartige Verlassen der Gegenstände aus der Siebtrommel dämpft und eine gewünschte Vereinzelung bewirkt. Vorteilhaft bestehen die Teilstücke aus je fünf ebene Flächen, wobei an die planparallel zueinander verlaufenden Endflächen je eine schräg verlaufende Fläche anschließt, die eine unterschiedliche Breite aufweisen.If the sieve drum is used at the same time to convey the tablets or pills through it, for example, this can take the form of an inclined plane be inclined, which is filled from the upper end, which can be connected to the screen drum connected to a cylindrical tube piece. This has the advantage that accumulations of tablets or pills are dissolved during the rotary movement of the sieve drum and the tube piece, so that the tablets or pills occasionally migrate to a switch located at the end of the tube piece due to gravity. The tube piece thus acts as a pulsation damper, which dampens the more or less pulsed leaving the objects from the screening drum and causes a desired separation. Advantageously, the sections each consist of five flat surfaces, with an obliquely extending surface adjoining the end surfaces running parallel to one another, each having a different width.
Die Drehbewegung der Siebtrommel kann des weiteren vorteilhaft in einer Vielzahl von kleinen, vorgebbaren Schritten kleinen bis sehr kleinen Drehwinkels pro Schritt stattfinden, die sich der Siebtrommel als mehr oder weniger leichtes Rattern oder als Vibration aufprägen, was die Reibung der Tabletten untereinander und die Vereinzelung der Tabletten zusätzlich unterstützt. Der Schrittschaltmotor kann zum Beispiel pro Sekunde regelbar zwischen 1 bis 10 Schritte ausführen, wobei die Siebtrommel beispielsweise zwischen 0,1 bis 10 U/sec ausführen kann. Auf diese Weise können Tabletten oder Pillen völlig produktbezogen gemäß den spezifischen Parametern der Tabletten oder Pillen bearbeitet werden. Bei weichen Gegenständen wird der Siebtrommel keine oder nur eine geringe Vibration aufgegeben, bei harten Gegenständen eine entsprechend angepaßte Vibration; zusätzlich kann die Drehgeschwindigkeit der Siebtrommel entsprechend angepaßt werden.The rotary movement of the sieve drum can also advantageously take place in a large number of small, predeterminable steps of small to very small rotation angles per step, which are impressed on the sieve drum as more or less easy rattling or as vibration, which increases the friction between the tablets and the separation of the tablets Tablets additionally supported. The stepper motor can, for example, regulate between 1 and 10 steps per second, the sieve drum, for example, between 0.1 and 10 U / sec. In this way, tablets or pills can be processed completely according to the specific parameters of the tablets or pills. In the case of soft objects, the sieve drum is given no or only a slight vibration; in the case of hard objects, an appropriately adapted vibration; in addition, the speed of rotation of the screen drum can be adjusted accordingly.
Kurzbeschreibung der Zeichnung, in der zeigen:
Figur 1- eine Ansicht einer Siebtrommel, deren Mantel aus zwei Teilstücken besteht und bei der das Gehäuse teilweise weggebrochen ist,
Figur 2- eine Ansicht der Siebtrommel längs der Schnittlinie A-A mit teilweise weggebrochenem Gehäuse und
- Fig. 3a-3d
- das Prinzip einer Siebtrommel in verschiedenen Stellungen, um die Bewegungen der Tabletten bei verschiedenen Stellungen zu zeigen.
- Figure 1
- 1 shows a view of a screening drum, the jacket of which consists of two parts and in which the housing has been partially broken away,
- Figure 2
- a view of the screening drum along the section line AA with the housing partially broken away and
- 3a-3d
- the principle of a sieve drum in different positions to show the movements of the tablets in different positions.
Das Prinzip und die Funktionsweise der Vorrichtung sind in den Figuren 3a bis 3d dargestellt. Eine Siebtrommel 25 ist drehbar um eine Drehachse gelagert, wobei die Siebtrommel 25 zum Durchfördern der Gegenstände des Schüttgutes aufgrund der Schwerkraft schräg geneigt in Form einer schiefen Ebene angeordnet sein kann. Der Mantel der Siebtrommel 25 ist offen-spiralförmig gekrümmt und kann aus einem Stück bestehen, so daß sich die beiden Kanten 26 und 27, vorzugsweise längs einer Mantellinie, im Abstand b gegenüberstehen und sich überlappen und dazwischen einen Längsspalt b ausbilden. Die Siebtrommel 25 dreht sich in Richtung des gekrümmten Pfeiles 32 im Uhrzeigersinn dergestalt, daß die Tabletten immer von der inneren Längskante 26 als Fallkante auf die darunterliegende Fläche des Mantels in Höhe der unteren oder äußeren Längskante 27 fallen. Somit bildet bei jeder Umdrehung der Siebtrommel 25 die innen gelegene Längskante 26 eine Fallkante für die Tabletten oder Pillen, die bei Weiterdrehung der Trommel die Fallhöhe b, das ist der Abstand der inneren Längskante 26 von der äußeren Längskante 27, herunterfallen, wobei aufgrund der Drehung der Siebtrommel 25 die später herabfallenden Tabletten, die vorher herabgefallenen Tabletten überholen, so daß die Tabletten unterschiedlich beschleunigt und ständig die Tabletten durcheinander bewegt und aneinander gerieben werden, wobei insbesondere die Tabletten um eine ihrer Achsen ständig bewegt werden. Auf diese Weise wird jegliche Pulkbildung von Tabletten, bei der sich die Tabletten nicht mehr relativ zueinander bewegen, innerhalb der Siebtrommel verhindert und bzw. ständig wieder aufgelöst. Die Tabletten wandern so innerhalb der Siebtrommel 25 die schiefe Ebene herab und gelangen in eine (nicht gezeichnete) Weiche, von der aus sie weiterbehandelt werden, und von der aus die Tabletten oder Pillen entweder einer Metall-Detektierungs-Station oder einer Prüfeinrichtung zum Prüfen der Tabletten gemäß spezifischer Parameter zugeführt werden.The principle and the mode of operation of the device are shown in FIGS. 3a to 3d. A
Die Figuren 1 und 2 zeigen ein Beispiel einer technischen Ausgestaltung der Vorrichtung. Diese besteht aus einer länglich-zylinderförmigen Siebtrommel 2, wobei der Mantel der Siebtrommel 2 aus zwei Teilstücken 3, 4 mit Löchern 6 besteht, so daß die Teilstücke 3, 4 völlig gesiebt sind. Die Teilstücke 3, 4 sind beidendig in Halteringen 7, 8 gehaltert, die ihrerseits untereinander durch längs verlaufende Stangen 16, 16', 16'', 16''' vorzugsweise zentrisch gehaltert und stabilisiert sind. Der Haltering 7 trägt einen Zahnkranz 10 zum rotierenden Antrieb der Siebtrommel 2, der Haltering 8 weist eine umlaufende Nut 11 auf, in die ein nicht gezeigtes Rad zur exakten Führung der Siebtrommel 2 eingreift. An die Siebtrommel 2 bzw. an den Haltering 8 schließt sich ein zylindrisches Rohrstück 9 an, welches zentrisch mit der Siebtrommel 2 verbunden ist und welches als Pulsationsdämpfer dient. Durch dieses Rohrstück 9 werden Ansammlungen oder Pulks von Tabletten beim Übergang aus der Siebtrommel in das Rohrstück 9 wirkungsvoll aufgelöst und die Tabletten vereinzelt.Figures 1 and 2 show an example of a technical embodiment of the device. This consists of an elongated
Die Länge des Rohres 9 im Verhältnis zur Länge der Siebtrommel 2 beträgt vorzugsweise zwischen ein Fünftel bis ein Drittel.The length of the
In dem hier gezeigten Beispiel der Siebtrommel befindet sich am Ende des Rohres 9 eine innenliegende Weiche mit zwei Ausläufen 12, 13, die entweder zu einer Metall-Detektier-Station oder zu einer Prüfeinrichtung führen.In the example of the screening drum shown here, there is an internal switch at the end of the
Die Siebtrommel 2 ist in ein vorzugsweise geschlossenes, schalen- oder zylinderförmiges Gehäuse 1 eingebaut, welches einen schiefen Boden 5 mit einem Auslaß-trichter 14 aufweist zum Absaugen des Staubes oder des Schüttgutes. Am vorderen Ende weist das Gehäuse 1 einen durch die vordere Deckfläche der Siebtrommel 2 in dieselbe ragenden Einfülltrichter 15 zum Befüllen der Siebtrommel 2 auf.The
Die Siebtrommel 2 ist vorzugsweise schräg angeordnet, wobei der Einfülltrichter 15 am oberen und das Rohrstück 9 am unteren Ende der Siebtrommel 2 angeordnet sind. Die Tabletten, Pillen oder das Schüttgut durchwandern somit die Siebtrommel 2 aufgrund der Schwerkraft und der Umwälzbewegungen.The
Der Mantel der Siebtrommel 2 besteht aus zwei Teilstücken 3, 4, welches je im Prinzip eine U-Schiene ist. Vorzugsweise bestehen die Teilstücke 3,4 aus fünf länglich-ebenen Flächen 18, 19, 20, 21, 22, die abgewinkelt sind, wobei die Flächen 18 und 21, die Endflächen zueinander parallel und senkrecht zu der dazwischen liegenden Fläche 20 verlaufen. Die Flächen 19, 22 stellen abgeschrägte Flächen zwischen den Flächen 18, 20 bzw. 20, 21 dar; diejenigen Flächen 19 und 22 der Teilstücke 3, 4, die zu den zueinander senkrecht verlaufenden Flächen 18, 20, 21 schräg verlaufen, weisen eine unterschiedliche Breite auf. Die Teilstücke 3, 4 sind dergestalt quer versetzt zur Mittelachse 17 der Siebtrommel 2 zusammengefügt, daß die Längskante 23 der Fläche 18 außerhalb und die Längskante 23' der Fläche 21 innerhalb des Volumens der Siebtrommel 2 liegen; beziehungsweise liegen die Längskante 24 des Teilstücks 4 innerhalb und die Längskante 24' des Teilstücks 4 außerhalb des Volumens; die Längskanten 23 und 24 bzw. 23' und 24' überlappen sich.The jacket of the
Die Teilstücke können auch aus drei ebenen Flächen bestehen, wobei die Übergänge zwischen den einzelnen Flächen durch eine gekrümmte Fläche gebildet sind.The sections can also consist of three flat surfaces, the transitions between the individual surfaces being formed by a curved surface.
Zwischen den Teilstücken 3, 4 werden dergestalt zwei längs verlaufende Schlitze a gebildet, die breiter sind als der größte Durchmesser des einzelnen in der Siebtrommel 2 behandelten Gegenstandes. Einerseits stellen beim Drehen der Siebtrommel 2 die jeweils innenliegenden Längskanten 23' und 24 Fallkanten für die Tabletten dar, die die Höhe a pro Umdrehung zweimal auf das darunter liegende Teilstück der Mantelwandung herunterfallen. Andererseits bilden die Schlitze a Entleerungsschlitze zur Schnellentleerung der Siebtrommel 2, wenn diese in entgegengesetzter Richtung im Uhrzeigersinn rotiert. Dadurch kann die Siebtrommel 2 schnell entleert und mit einem anderen Schüttgut beschickt werden; das aus der Siebtrommel ins Gehäuse entleerte Schüttgut wird über den Auslaßtrichter 14 abgesaugt. Durch diese Gestaltung ist ebenfalls eine leichte Reinigung und Wartung der Siebtrommel gewährleistet.Between the
Ebenso ist es möglich, die Vorrichtung zum Trocknen einzusetzen und gleichzeitig durch die Trommel einen trocknenden Luftstrom durchzuführen. In speziellen Anwendungsfällen können die Teilstücke der Siebtrommel auch durch solche aus ungelochten Blechen ersetzt sein.It is also possible to use the device for drying and at the same time to carry out a drying air flow through the drum. In special applications, the sections of the sieve drum can also be replaced by those made of non-perforated metal sheets.
Der Gegenstand der Erfindung ist vorzugsweise zum Entgraten und Entstauben von aus einer Tablettenpresse zugeführten Tabletten oder Pillen nach dem Preßvorgang geeignet. Ebenso kann der Gegenstand der Erfindung zum abreibenden oder glättenden oder entstaubenden oder trocknenden Behandeln von losen, vorzugsweise relativ kleinvolumigen, Schüttgütern eingesetzt werden.The object of the invention is preferably suitable for deburring and dedusting tablets or pills fed from a tablet press after the pressing process. The subject of the invention can also be used for the abrading or smoothing or dusting or drying treatment of loose, preferably relatively small-volume, bulk goods.
- 11
- Gehäusecasing
- 22nd
- SiebtrommelSieve drum
- 3, 43, 4
- Teilstücke des Mantels der SiebtrommelParts of the jacket of the screening drum
- 55
- Boden des GehäusesBottom of the case
- 66
- Löcher innerhalb des Mantels der SiebtrommelHoles inside the drum shell
- 7, 87, 8
- HalteringeRetaining rings
- 99
- zylindrisches Rohrstückcylindrical pipe section
- 1010th
- ZahnkranzSprocket
- 1111
- NutGroove
- 12, 1312, 13
- Ausläufe der WeicheOutlets of the switch
- 1414
- AuslaßtrichterOutlet funnel
- 1515
- Einfülltrichterhopper
- 16, 16', 16'', 16'''16, 16 ', 16' ', 16' ''
- StangenPoles
- 1717th
- MittelachseCentral axis
- 18, 19, 20, 21, 2218, 19, 20, 21, 22
- ebene, längs verlaufende Flächen der Teilstückeflat, longitudinal surfaces of the sections
- 23, 23'23, 23 '
- äußere und innere Längskante des Teilstücks 3outer and inner longitudinal edge of section 3
- 24, 24'24, 24 '
-
innere und äußere Längskante des Teilstücks 4inner and outer longitudinal edge of
section 4 - 2525th
- offen-spiralförmiger Mantel der Siebtrommelopen-spiral jacket of the sieve drum
- 2626
- innere Längskante des Mantelsinner longitudinal edge of the jacket
- 2727
- äußere Längskante des Mantelsouter longitudinal edge of the jacket
- 31, 3231, 32
- Pfeile für die Drehrichtungen der SiebtrommelnArrows for the directions of rotation of the sieve drums
- 3434
- EinfüllöffnungFilling opening
- a, ba, b
- Fallhöhen oder SchlitzbreiteFall heights or slot width
Claims (10)
- Device for deburring and/or dedusting tablets or pills coming from a tablet or pill press after a pressing procedure, equipped with a sieve drum (2) to receive the tablets or pills, which is mounted so that it can rotate around its lengthwise axis (17) and whose jacket is made up of overlapping segments (3, 4) affixed at intervals, which form channels between them,
characterized in that
the jacket of the sieve drum (2) consists of two angled segments (3, 4) which, while forming coherent surfaces (18, 19, 20, 21, 22) running lengthwise relative to the center axis, are angled, arranged in the lengthwise direction of the sieve drum (2) and positioned staggered with respect to each other, and each segment (3, 4) forms one half of the jacket, and each of the adjacent lengthwise edges (23, 24, 23', 24) of the segments (3, 4) runs along the length of the segments (3, 4), each leaving a lengthwise gap (a) that is open towards the outside, and said gap is wider than the largest diameter of the individual tablet or pill, whereby the lengthwise edges (23', 24) of the segments (3, 4) which lie on the inside form drop-off edges over which the tablets or pills slide while the sieve drum (2) is rotating and then they fall onto the segment (3, 4) of the jacket below. - Device according to Claim 1, characterized in that
the surfaces (18, 19, 20, 21, 22) of the segments (3, 4) are flat or slightly concave and, of these flat or slightly concave curved surfaces (18, 19, 20, 21, 22), two surfaces (18, 21) run plane-parallel or practically plane-parallel to each other and enclose a surface (20) which runs perpendicular to them. - Device according to Claim 1 or 2, characterized in that
the segments (3, 4) are made up of five smooth surfaces (18, 19, 20, 21, 22), and the inclined surfaces (19, 22), which are different in width, are adjacent to the surfaces (18, 21) which run plane-parallel to each other. - Device according to Claim 1, characterized in that
a cylindrical tube section (9) is centrally arranged on the sieve drum (2) in the outlet direction. - Device according to Claim 1 or 4, characterized in that
the segments (3, 4) are held at both ends in two holding rings (7, 8) which, in turn, are centrally joined to each other by means of rods (16, 16', 16'', 16''') running lengthwise and the segments are mounted or guided so that they can pivot, whereby one of the holding rings (7) has a toothed gear (10) to drive the sieve drum (2) while the tube section (9) is arranged on the other holding ring (8). - Device according to Claim 4 or 5, characterized in that
the length of the tube section (9) is between one-fifth to one-third relative to the length of the sieve drum (2). - Device according to Claim 1 or 4 or 5, characterized in that
the sieve drum (2) is arranged slanted in a dish-shaped or cylindrical housing (1, 5) which has an outlet opening (14) at its lowest site for purposes of withdrawing the dust and the tablets or pills and which has a filling funnel (15) at its highest site. - Device according to Claim 1, characterized in that
the sieve drum (2) can be driven by means of a stepping motor which divides the rotational movement of the sieve drum (2) into a large number of small steps with a small to very small angle of rotation per step, whereby the steps are transmitted to the sieve drum (2) in the form of a slight or fine rattling. - Device according to Claim 6, characterized in that
the stepping motor can be adjusted from 1 to 10 steps per second and the sieve drum is capable of making 0.1 to 10 revolutions per second. - Device according to Claim 1, characterized in that
the segments are made of unperforated sheet metal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4118883 | 1991-06-08 | ||
| DE4118883A DE4118883A1 (en) | 1991-06-08 | 1991-06-08 | DEVICE FOR ABRASIVE AND DEDUSTING HANDLING OF Loose bulk materials, in particular for deburring and dedusting tablets or pills fed from a tablet press after the pressing process |
| PCT/DE1992/000470 WO1992022401A1 (en) | 1991-06-08 | 1992-06-09 | Device for burring and dusting tablets or pills |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0588838A1 EP0588838A1 (en) | 1994-03-30 |
| EP0588838B1 true EP0588838B1 (en) | 1995-09-06 |
Family
ID=6433493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92911094A Expired - Lifetime EP0588838B1 (en) | 1991-06-08 | 1992-06-09 | Device for burring and dusting tablets or pills |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0588838B1 (en) |
| AT (1) | ATE127376T1 (en) |
| DE (2) | DE4118883A1 (en) |
| WO (1) | WO1992022401A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7956623B2 (en) | 2007-02-16 | 2011-06-07 | Countlab, Inc | Container filling machine |
| CN102806498A (en) * | 2011-05-31 | 2012-12-05 | 日立汽车***株式会社 | Deburring device |
| US10577186B2 (en) | 2011-08-18 | 2020-03-03 | Countlab, Inc. | Container filling machine |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2706342B1 (en) * | 1993-06-18 | 1995-09-01 | Sn Clera | Stripping tank. |
| DE19906915B4 (en) * | 1999-02-19 | 2017-06-08 | Dietmar Wacker | Treatment drum for deburring molded parts |
| DE10207837A1 (en) * | 2002-02-25 | 2003-09-11 | Tdk Maschb Gmbh | Deburring and cleaning apparatus e.g. for engine blocks, has cleaning drum for removing residue from deburring medium before re-supply to vibration chamber |
| DE102004052881A1 (en) * | 2004-11-02 | 2006-05-04 | Rösler Holding GmbH & Co. KG | Grinding element for slip grinding has at least a surface layer which is made of an elastically damping material with a specified range of Shore hardness |
| US8006468B2 (en) | 2008-04-14 | 2011-08-30 | Countlab Inc. | Container filling machine having vibration trays |
| CA2686751C (en) | 2008-12-02 | 2017-02-21 | Countlab, Inc. | A discrete article spacing apparatus for vibration trays |
| CN103433262A (en) * | 2013-08-21 | 2013-12-11 | 四川省绵阳西南自动化研究所 | Automatic burnishing-in screening device for tablets |
| CN108160465B (en) * | 2018-02-12 | 2024-01-26 | 青岛百精金检技术有限公司 | Screening sheet metal detection integrated machine |
| CN110742811A (en) * | 2019-12-03 | 2020-02-04 | 陈志湘 | Intelligent integrated pharmaceutical equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE357882C (en) * | 1922-09-01 | Nl Fabriek En Handelmij | Rotating drum for scrubbing, mixing, cooling, drying and other purposes | |
| US1945908A (en) * | 1932-11-14 | 1934-02-06 | Mascareno Donaciano | Silver polishing machine |
| US2210584A (en) * | 1939-04-07 | 1940-08-06 | Owens Illinois Glass Co | Apparatus for polishing and cleaning plastic articles |
| US2420748A (en) * | 1944-07-21 | 1947-05-20 | George M Howard | Tumbling mill |
| DE2135052B2 (en) * | 1971-07-14 | 1974-02-28 | Dr.-Ing. Manfrid Dreher Kg, Apparatebau Und Chemische Verfahrenstechnik Fuer Oberflaechenbehandlung Von Metallen, 7541 Engelsbrand | Centrifugal drum system for mechanical surface treatment of small parts |
-
1991
- 1991-06-08 DE DE4118883A patent/DE4118883A1/en active Granted
-
1992
- 1992-06-09 AT AT92911094T patent/ATE127376T1/en active
- 1992-06-09 EP EP92911094A patent/EP0588838B1/en not_active Expired - Lifetime
- 1992-06-09 WO PCT/DE1992/000470 patent/WO1992022401A1/en active IP Right Grant
- 1992-06-09 DE DE59203596T patent/DE59203596D1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7956623B2 (en) | 2007-02-16 | 2011-06-07 | Countlab, Inc | Container filling machine |
| CN102806498A (en) * | 2011-05-31 | 2012-12-05 | 日立汽车***株式会社 | Deburring device |
| US10577186B2 (en) | 2011-08-18 | 2020-03-03 | Countlab, Inc. | Container filling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992022401A1 (en) | 1992-12-23 |
| DE4118883A1 (en) | 1992-12-10 |
| DE59203596D1 (en) | 1995-10-12 |
| ATE127376T1 (en) | 1995-09-15 |
| EP0588838A1 (en) | 1994-03-30 |
| DE4118883C2 (en) | 1993-04-29 |
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