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WO1997032716A1 - Dispositif d'alimentation en masses a comprimer pour machines a produire des comprimes - Google Patents

Dispositif d'alimentation en masses a comprimer pour machines a produire des comprimes Download PDF

Info

Publication number
WO1997032716A1
WO1997032716A1 PCT/EP1996/000926 EP9600926W WO9732716A1 WO 1997032716 A1 WO1997032716 A1 WO 1997032716A1 EP 9600926 W EP9600926 W EP 9600926W WO 9732716 A1 WO9732716 A1 WO 9732716A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
feed
housing
feed channel
cells
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.)
Ceased
Application number
PCT/EP1996/000926
Other languages
German (de)
English (en)
Inventor
Jürgen Hilmann
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.)
Bayer Pharma AG
Original Assignee
Schering AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schering AG filed Critical Schering AG
Priority to AT96907354T priority Critical patent/ATE192075T1/de
Priority to PCT/EP1996/000926 priority patent/WO1997032716A1/fr
Priority to EP96907354A priority patent/EP0885113B1/fr
Priority to JP09531372A priority patent/JP2000506070A/ja
Priority to DE59605077T priority patent/DE59605077D1/de
Publication of WO1997032716A1 publication Critical patent/WO1997032716A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable

Definitions

  • the invention relates to a device in tableting machines for feeding molding compounds, in particular those which are problematic with regard to their flowability, in which a control or regulating metering device is arranged in a feed channel which ends in a filling shoe.
  • the filling shoe with the aid of which the molding compounds are fed to the individual pressing chambers, lies largely sealingly on, for example, a round tableting table or a matrix table. It covers a large number of bale chamber openings.
  • the filling shoe is largely filled with molding compound which arrives there from a storage container via a feed channel.
  • the molding compounds used for tablet production consist of a mixture of active ingredients and carrier substances.
  • Most of the powdered carrier substances have the task of making the active ingredients manageable in the form of tablets.
  • the carrier substances in particular must be able to be given a permanently stable shape under the action of pressure.
  • the molding compound generally passes from the storage container into the filling shoe by means of gravity feed.
  • vibrators and / or stirring devices are used in some feed systems.
  • a plurality of impeller wheels are used in the filling shoe, which are mounted about vertical axes and rotate directly above the tabletting table. They are engaged with each other. The impeller wheels transport the molding compound out of the feed area and push it continuously over the bale chamber openings.
  • the excess molding compound which is not immediately taken up by the pressing chambers, is transported and mixed in a circle along the inner wall of the filling shoe.
  • the molding compound is permanently compressed and tumbled in the gaps between the edges of the impeller and the tabletting table and the inner wall of the filling shoe.
  • DE-PS 40 25 487 known filling and dosing device for tablet animal machines uses an endless belt that is guided over two wheels in the filling shoe instead of the impeller wheels.
  • the driven endless belt has a plurality of cams on its outside, which conveys the molding compound from a feed hopper to the die bores.
  • the feed hopper is part of an adjustable orifice metering. For this purpose, it is rotatably supported on the filling shoe about its longitudinal axis, its outlet opening being arranged eccentrically to its axis of rotation and being congruent with the filling opening of the filling shoe in only one position.
  • the flow of the molding compound is controllably changed by a motor-driven rotation of the feed funnel with respect to the filling shoe.
  • the molding compound is also permanently transported, mixed and tumbled in the filling shoe by the endless belt with its cams.
  • the closing movement of the feed hopper on its lower edge also leads to caking of the molding compound.
  • the resulting change in cross-section results in an uncontrollable control behavior of the dosing device.
  • the principally unwanted aftertreatments of the repeated mixing, additional compacting and grinding in the filling shoe sometimes change the original properties of the molding compound permanently.
  • Many carriers, such as lactose tend to clump and die after just a few minutes of these post-treatments.
  • Rolling and compacting inevitably changes the particle distribution of the molding compound. This leads on the one hand to a strongly fluctuating tablet strength and on the other hand to an increase in the molding compound density. The latter in turn causes a higher concentration of active substance in individual tablets and also a higher reject rate due to the increased tablet weight, which is now too high.
  • the invention is therefore based on the problem of creating a feed device for molding compounds with which the molding compound is fed or controlled to the filling shoe during the tabletting process without changing its bulk density and its flow behavior and stored there temporarily. All parts of the feed device should be designed such that they are easy to assemble and easy to clean. Furthermore, the disadvantages known from the prior art should be avoided.
  • An at least controllable metering device is installed in the feed channel.
  • device arranged, which has a motor-driven cell roller surrounded by a housing with at least four cells, the approximately horizontally oriented axis of rotation of the cell roller being arranged transversely to the feed channel.
  • the cell roller in the feed channel to the filling shoe of the tabletting machine - at least in terms of construction - is comparable to an overshot water wheel.
  • the molding compound for example, flows from the top onto the cell roller via the feed channel.
  • the cells just moved under the channel opening are filled one after the other.
  • the filled cells are emptied into the feed channel that continues below the cell roller.
  • This lower part of the feed channel opens into the filling shoe, whereby it can also be part of the same.
  • the cell roller is driven.
  • the speed that can be set on its drive it conveys a certain amount of molding compound per unit of time.
  • the transport of the molding compound can be reduced or stopped by lowering the drive speed.
  • the imaginary center lines of the feed channel and the metering device oriented transversely thereto can be oriented skew to one another.
  • the molding compound which often does not slip enough into the filling shoe despite the effects of gravity, is scooped or poured from the upper feed channel into the lower one via the cell roller.
  • the molding compound which tends to stick and is problematic with regard to its flowability, trickles or flows, although it is required by force, without grinding action or compaction through the feed channel with its metering device into the filling shoe.
  • The gets over the filling shoe Molding compound in the individual pressing chambers. In the filling shoe itself, no movable conveying means such as impeller wheels are required.
  • the diameter of the cell roller is greater than twice the inner diameter of the upper part of the feed channel or, in the case of a rectangular feed channel, greater than twice its width.
  • the length of the cells is preferably greater than the sum of the inside diameter of the feed channel - or its extension parallel to the axis of rotation of the cell roller - and the quotient of twice the cell depth through the tangent of the angle of repose of the molding compound. Accordingly, the feed channel penetrating the cell roller housing has a smaller cross section than the maximum parallel longitudinal sectional area through the cell roller.
  • the molding compound can neither fill the individual cells to their full length nor can it trickle past the cell roller unhindered.
  • the cells are filled in accordance with the constant angle of repose of the respective molding compound and the speed of the cell roller.
  • the cell volume here is not a direct dosage size, since the degree of filling of the cells is a function of the physical properties of the molding compound.
  • the cell cross-section and the cell length are dimensioned such that the molding compound does not touch the housing end walls in the case of cells which are open on the end face of the cell roller. As a result, the molding compound does not get between parts that move relative to each other.
  • the cells are arranged parallel to the axis of rotation and have an approximately semicircular cross-sectional contour. Such a shape enables a smooth, edge-free surface of the cell, which is both inexpensive to manufacture and easy to clean.
  • Other cross-sectional contours such as polygonal, triangular, trapezoidal, etc., are also possible.
  • the cross-sectional contours of the cells viewed in individual face sections, preferably meet approximately perpendicularly to the respective enveloping circle of the cell roller. This applies in particular to the contour of the web side pushing the molding compound.
  • the webs between the cells act like blades that are almost perpendicular to the tangent or tangential plane of the inner wall of the housing. This cell and web design prevents compression of the molding compound in front of the respective web edge. If necessary, the angle between the sliding web edge and the corresponding housing tangent can also be more than 90 °.
  • cells are also conceivable that are not straight, but e.g. run in a crescent shape.
  • These cells are designed with respect to their arrowing in such a way that the lateral edge region of the cells leads the central region, as seen in the direction of rotation.
  • This shape additionally prevents the molding compound from touching the end walls of the housing.
  • Another possibility to keep the molding compound away from the end walls is to provide the cells with lateral edges or to limit them laterally by means of cover disks.
  • the cell depth corresponds at least to the maximum half width of the cells.
  • the cell width is the clear distance between two adjacent webs.
  • the molding compound throughput per unit of time is determined constructively via the cell depth, among other things. To minimize the grinding and compacting of the Pressing compounds between the inlet edges of the feed channel and the webs of the cell roll, deep cells are preferred.
  • the feed channel penetrating the housing of the cell roller encloses an angle of 20 to 50 ° with the vertical, for example.
  • the angle is generally predetermined by the spatial conditions within the tableting machine. In some cases, a vertically aligned feed channel is also possible.
  • the imaginary center line of the feed channel intersects the axis of rotation of the cell roller, preferably in the region of half the length.
  • a direction of rotation is selected for the cell roller in which the molding compound trickling into the cell is first raised by the rotation of the cell roller. This means that the cell moves a little further upwards on its circular path about its axis of rotation before it has reached the highest point. As a result, the downward pivoting movement of the individual filled cells is less than 180 ° from the highest point. As a result, the molding compound falls into the lower part of the feed channel or directly into the filling shoe before reaching the horizontally extending housing area. The molding compound is not pushed through the housing with the aid of the webs or cell partition walls.
  • the cell roller is driven by a DC motor with a tacho generator.
  • the tachometer generator enables one Speed monitoring of the DC motor.
  • a gearbox is flanged onto the DC motor, with which the motor speed is translated into slow speed.
  • a torsionally rigid, movable or torsionally flexible coupling is preferably arranged between the transmission output shaft and the shaft of the cell roller.
  • the cell roller drive can also be operated in a controlled manner.
  • a fill level sensor is accommodated at least in the fill shoe. It is preferably located in the front area of the filling shoe, which is furthest away from the molding compound feed. In this area, the molding compound builds up due to the relative movement between the tablet table and the filling shoe.
  • a sensor located there in an upper filling shoe zone which works, for example, capacitively or inductively, detects the degree of filling.
  • a regulation causes a speed change on the DC motor. This regulation is only indirectly dependent on the pressing performance of the tabletting machine.
  • the volume flow of the molding compound passing through the filling shoe can be varied within a wide range by changing the speed.
  • excessive speeds are undesirable since such molding compounds adhere to the warming cell partition walls.
  • the cross-sectional areas of the cells along the axis of rotation can be increased, for example by increasing the cell depth.
  • the cell roller can have a frustoconical basic shape. In this form, very large changes in the cell cross-section along the axis of rotation can be realized while the cell partition walls remain the same. If a part of the feed channel arranged above the housing of the cell roller is now arranged to be laterally displaceable over the length of the housing, there is a different cell cross-section under each displacement position.
  • Another alternative consists in producing the cell walls between the rigid cell partition walls from flexible material.
  • elastic foils can be attached there, which are e.g. to the axis of rotation or an axis laterally offset to it. This creates cells with a V-shaped cross section, the depth of which depends on the respective prestress.
  • FIG. 1 section of a feed device with a metering device
  • Figure 2 Front view with partial section of Figure 1.
  • FIG. 1 and 2 show a device for feeding molding compound from a storage container (5) into a filling shoe (10).
  • the device is arranged above a tabletting table (1) of a tabletting machine.
  • the filling shoe (10) is arranged directly above the tablet table (1). It covers a variety of press cam (2).
  • the filling shoe (10), under which the tabletting table (1) slides, has several baffles (11) in its inner area for the accumulation of the molding compound above the pressing chambers (2).
  • a fill level sensor (12) is attached in the upper area of a side wall.
  • a feed channel (20) connects the filling shoe (10) to the storage container (5) via the metering device (30).
  • the upper, tubular part (21) of the feed channel (20) cuts the transversely arranged cylindrical housing (31) of the metering device (30) approximately in the middle.
  • the lower part of the feed channel (20) consists of a flat funnel (22) connected to the housing (31), which creates the connection to the filling shoe (10).
  • the flat funnel (22) is designed in such a way that its side surfaces extend almost to the side of the housing.
  • the two upper and lower funnel surfaces are at a distance from each other on the housing (31) which corresponds approximately to the diameter of the upper part (21) of the feed channel (20).
  • the upper funnel surface is provided with an opening which is closed with a cover (23).
  • Cover (23) surrounds the lower part of the feed channel (20) with trapezoidal locking lugs, the front ends of the locking lugs resting on the lower funnel surface.
  • the lower part of the feed channel (20) can be cleaned via the opening without time-consuming disassembly.
  • Cover (23) can also be designed and attached in a different way.
  • a cell roller (35) is arranged in the housing (31), which is closed at its end faces by two housing covers (32).
  • the housing cover (32) is screwed onto the housing (31) using fine threads.
  • the cell roller (35) here has a cylindrical outer contour into which, for example, eight groove-shaped cells (36) with a constant pitch are milled parallel to its axis of rotation.
  • the width of the cells in the area of the cylindrical outer contour is selected such that the webs (37) between the neighboring cells (36) are thin-walled.
  • the cell roller is delimited on both sides with the aid of the edge disks (38).
  • the edge disks (38) are also shrunk onto the shaft (39) via a cross-press fit.
  • a DC motor (40) with an attachment gear (42) and a tachometer generator (41) is used as the drive for the cell roller (35).
  • the transmission output of the front transmission (42) is coupled to the shaft (39) of the cell roller (35) via a traction mechanism transmission.
  • a drive wheel (46) sits on the shaft of the auxiliary transmission (42) and an output wheel (47) on the shaft (39).
  • Both wheels (46, 47) are connected by a traction device (45).
  • the traction means (47) can be a toothed belt, a flat belt or the like.
  • the traction mechanism elastically connects the attachment gear (42) to the cell roller (35).
  • the drive (40- 42) can also be mounted directly next to the cell roller (35).
  • An elastic coupling for example a pin coupling, is then arranged between the attachment gear (42) and the cell roller (35).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Abstract

Ce dispositif sert à alimenter des machines à produire des comprimés, en masses à comprimer, notamment en masses qui posent des problèmes à cause de leur fluidité. Un dispositif régulable ou réglable de dosage (30) est monté dans un canal d'amenée (20) qui se termine dans un sabot de remplissage (10). Le dispositif de dosage (30) comprend un arbre à alvéoles (35) entraîné par un moteur, entouré par un boîtier (31, 32) et pourvu d'au moins quatre alvéoles (36). L'axe de rotation approximativement horizontal de l'arbre à alvéoles (35) s'étend transversalement au canal d'amenée (20). L'invention permet d'amener de manière réglée ou régulée la masse à comprimer jusqu'au sabot de remplissage (10) et de l'y entreposer pendant la production des comprimés sans modifier sa densité apparente ni sa fluidité.
PCT/EP1996/000926 1996-03-06 1996-03-06 Dispositif d'alimentation en masses a comprimer pour machines a produire des comprimes Ceased WO1997032716A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT96907354T ATE192075T1 (de) 1996-03-06 1996-03-06 Zuführeinrichtung für pressmassen in tablettiermaschinen
PCT/EP1996/000926 WO1997032716A1 (fr) 1996-03-06 1996-03-06 Dispositif d'alimentation en masses a comprimer pour machines a produire des comprimes
EP96907354A EP0885113B1 (fr) 1996-03-06 1996-03-06 Dispositif d'alimentation en masses a comprimer pour machines a produire des comprimes
JP09531372A JP2000506070A (ja) 1996-03-06 1996-03-06 錠剤製造機におけるプレス材料供給装置
DE59605077T DE59605077D1 (de) 1996-03-06 1996-03-06 Zuführeinrichtung für pressmassen in tablettiermaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1996/000926 WO1997032716A1 (fr) 1996-03-06 1996-03-06 Dispositif d'alimentation en masses a comprimer pour machines a produire des comprimes

Publications (1)

Publication Number Publication Date
WO1997032716A1 true WO1997032716A1 (fr) 1997-09-12

Family

ID=8166171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/000926 Ceased WO1997032716A1 (fr) 1996-03-06 1996-03-06 Dispositif d'alimentation en masses a comprimer pour machines a produire des comprimes

Country Status (5)

Country Link
EP (1) EP0885113B1 (fr)
JP (1) JP2000506070A (fr)
AT (1) ATE192075T1 (fr)
DE (1) DE59605077D1 (fr)
WO (1) WO1997032716A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003083035A1 (fr) * 2002-03-27 2003-10-09 Bostlan, S.A. Procede et dispositif de production de mini-tablettes de manganese a forte concentration pour l'alliage de bains d'aluminium
CN114474833A (zh) * 2022-01-04 2022-05-13 安徽百盛药业有限公司 一种用于保健食品加工的压片装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007022680B3 (de) * 2007-05-11 2008-11-13 Coperion Waeschle Gmbh & Co. Kg Zellenradschleuse
CN114729747B (zh) 2019-09-03 2023-04-21 Sl技术有限公司 用于生物质加热系统的具有清洁装置的旋转炉排
CN115997079A (zh) 2020-09-04 2023-04-21 Sl技术有限公司 三点扭矩支撑件
DE102021123339B3 (de) * 2021-09-09 2022-08-25 Fette Compacting Gmbh Fülleinrichtung zum Befüllen von Kavitäten einer Rundläuferpresse sowie Rundläuferpresse und System zum kontinuierlichen Verarbeiten von pulverförmigen Produkten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595130C (de) * 1931-02-03 1934-04-07 Buckau R Wolf Akt Ges Maschf Vorrichtung zum Zufuehren des Pressgutes zu Brikettstrangpressen
DE666824C (de) * 1935-11-24 1938-10-28 Vereinigungsgesellschaft Rhein Kohlezufuehrvorrichtung bei Brikettstrangpressen
US2514486A (en) * 1945-11-21 1950-07-11 Lee B Green Molding machine
FR1319467A (fr) * 1962-02-05 1963-03-01 Dispositif pour niveler et agglomérer préalablement un matériel en poudre dans des moules alimentés par chariots de presses à agglomérer d'un type quelconque
US4238058A (en) * 1978-06-26 1980-12-09 M & S Industries, Inc. Body construction for rotary valve
DE3609869A1 (de) * 1986-03-22 1987-09-24 Bernhard Boeckenholt Vorrichtung zum pressen von pressgut

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595130C (de) * 1931-02-03 1934-04-07 Buckau R Wolf Akt Ges Maschf Vorrichtung zum Zufuehren des Pressgutes zu Brikettstrangpressen
DE666824C (de) * 1935-11-24 1938-10-28 Vereinigungsgesellschaft Rhein Kohlezufuehrvorrichtung bei Brikettstrangpressen
US2514486A (en) * 1945-11-21 1950-07-11 Lee B Green Molding machine
FR1319467A (fr) * 1962-02-05 1963-03-01 Dispositif pour niveler et agglomérer préalablement un matériel en poudre dans des moules alimentés par chariots de presses à agglomérer d'un type quelconque
US4238058A (en) * 1978-06-26 1980-12-09 M & S Industries, Inc. Body construction for rotary valve
DE3609869A1 (de) * 1986-03-22 1987-09-24 Bernhard Boeckenholt Vorrichtung zum pressen von pressgut

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003083035A1 (fr) * 2002-03-27 2003-10-09 Bostlan, S.A. Procede et dispositif de production de mini-tablettes de manganese a forte concentration pour l'alliage de bains d'aluminium
CN114474833A (zh) * 2022-01-04 2022-05-13 安徽百盛药业有限公司 一种用于保健食品加工的压片装置
CN114474833B (zh) * 2022-01-04 2023-09-08 安徽百盛药业有限公司 一种用于保健食品加工的压片装置

Also Published As

Publication number Publication date
EP0885113A1 (fr) 1998-12-23
DE59605077D1 (de) 2000-05-31
ATE192075T1 (de) 2000-05-15
EP0885113B1 (fr) 2000-04-26
JP2000506070A (ja) 2000-05-23

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