EP0588838B1 - Vorrichtung zum entgraten und entstauben von tabletten oder pillen - Google Patents

Vorrichtung zum entgraten und entstauben von tabletten oder pillen Download PDF

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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
Authority
EP
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.)
Expired - Lifetime
Application number
EP92911094A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0588838A1 (de
Inventor
Norbert Krämer
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0588838A1 publication Critical patent/EP0588838A1/de
Application granted granted Critical
Publication of EP0588838B1 publication Critical patent/EP0588838B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Medicinal Preparation (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Glanulating (AREA)
EP92911094A 1991-06-08 1992-06-09 Vorrichtung zum entgraten und entstauben von tabletten oder pillen Expired - Lifetime EP0588838B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4118883A DE4118883A1 (de) 1991-06-08 1991-06-08 Vorrichtung zum abreibenden und entstaubenden handling von losen schuettguetern, insbesondere zum entgraten und entstauben von aus einer tablettenpresse zugefuehrten tabletten oder pillen nach dem pressvorgang
DE4118883 1991-06-08
PCT/DE1992/000470 WO1992022401A1 (de) 1991-06-08 1992-06-09 Vorrichtung zum entgraten und entstauben von tabletten oder pillen

Publications (2)

Publication Number Publication Date
EP0588838A1 EP0588838A1 (de) 1994-03-30
EP0588838B1 true EP0588838B1 (de) 1995-09-06

Family

ID=6433493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92911094A Expired - Lifetime EP0588838B1 (de) 1991-06-08 1992-06-09 Vorrichtung zum entgraten und entstauben von tabletten oder pillen

Country Status (4)

Country Link
EP (1) EP0588838B1 (enrdf_load_stackoverflow)
AT (1) ATE127376T1 (enrdf_load_stackoverflow)
DE (2) DE4118883A1 (enrdf_load_stackoverflow)
WO (1) WO1992022401A1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7956623B2 (en) 2007-02-16 2011-06-07 Countlab, Inc Container filling machine
CN102806498A (zh) * 2011-05-31 2012-12-05 日立汽车系统株式会社 去毛刺装置
US10577186B2 (en) 2011-08-18 2020-03-03 Countlab, Inc. Container filling machine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706342B1 (fr) * 1993-06-18 1995-09-01 Sn Clera Cuve de dégrappage.
DE19906915B4 (de) * 1999-02-19 2017-06-08 Dietmar Wacker Behandlungstrommel zum Entgraten von Formteilen
DE10207837A1 (de) * 2002-02-25 2003-09-11 Tdk Maschb Gmbh Entgratungs- und Reinigungsvorrichtung
DE102004052881A1 (de) * 2004-11-02 2006-05-04 Rösler Holding GmbH & Co. KG Schleifkörper
US8006468B2 (en) 2008-04-14 2011-08-30 Countlab Inc. Container filling machine having vibration trays
US8225925B2 (en) 2008-12-02 2012-07-24 Countlab Inc. Discrete article spacing apparatus for vibration trays
CN103433262A (zh) * 2013-08-21 2013-12-11 四川省绵阳西南自动化研究所 一种药片自动辊光筛分装置
CN108160465B (zh) * 2018-02-12 2024-01-26 青岛百精金检技术有限公司 一种筛片金检一体机
CN110742811A (zh) * 2019-12-03 2020-02-04 陈志湘 一种智能化集成制药设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE357882C (de) * 1922-09-01 Nl Fabriek En Handelmij Rotierende Trommel zum Scheuern, Mischen, Kuehlen, Trocknen und zu anderen Zwecken
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 (de) * 1971-07-14 1974-02-28 Dr.-Ing. Manfrid Dreher Kg, Apparatebau Und Chemische Verfahrenstechnik Fuer Oberflaechenbehandlung Von Metallen, 7541 Engelsbrand Fliehkrafttrommelanlage zur mechanischen Oberflächenbearbeitung von Kleinteilen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7956623B2 (en) 2007-02-16 2011-06-07 Countlab, Inc Container filling machine
CN102806498A (zh) * 2011-05-31 2012-12-05 日立汽车系统株式会社 去毛刺装置
US10577186B2 (en) 2011-08-18 2020-03-03 Countlab, Inc. Container filling machine

Also Published As

Publication number Publication date
DE4118883A1 (de) 1992-12-10
ATE127376T1 (de) 1995-09-15
DE59203596D1 (de) 1995-10-12
DE4118883C2 (enrdf_load_stackoverflow) 1993-04-29
WO1992022401A1 (de) 1992-12-23
EP0588838A1 (de) 1994-03-30

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