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EP4232275B1 - Unité de remplissage pour presse rotative et procédé de fourniture d'une presse rotative optimisée - Google Patents

Unité de remplissage pour presse rotative et procédé de fourniture d'une presse rotative optimisée Download PDF

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Publication number
EP4232275B1
EP4232275B1 EP21799237.9A EP21799237A EP4232275B1 EP 4232275 B1 EP4232275 B1 EP 4232275B1 EP 21799237 A EP21799237 A EP 21799237A EP 4232275 B1 EP4232275 B1 EP 4232275B1
Authority
EP
European Patent Office
Prior art keywords
wheel
designed
filling
blades
impeller
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.)
Active
Application number
EP21799237.9A
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German (de)
English (en)
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EP4232275A1 (fr
Inventor
Thomas Brinz
Fabian Werner
Torsten Grass
Matthias Mössinger
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.)
Syntegon Technology GmbH
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Syntegon Technology GmbH
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Filing date
Publication date
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Publication of EP4232275A1 publication Critical patent/EP4232275A1/fr
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses
    • 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
    • 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
    • B30B15/308—Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/32—Discharging presses

Definitions

  • the invention relates to a filling unit for a rotary press with the features of the preamble of claim 1 and a method for providing an optimized rotary press with features of the independent claim.
  • Rotary presses are used in the pharmaceutical, technical, chemical or food industries to produce tablets or pellets in large quantities from powdered materials.
  • Rotary presses have a rotating die plate with die holes arranged in it that move on a circular path.
  • Upper and lower punches are typically provided, which move with the die plate on a circular path and move up and down during the rotation.
  • the upper and lower punches are designed in such a way that their upper and lower punch ends engage in the die holes arranged in the die plate in order to compress the powder material introduced into them into tablets.
  • the powder to be pressed is fed into the die holes via a hopper with attached filling unit with rotating impellers.
  • Such filling units are used, for example, in EP 3 406 436 A1 and DE 20 2007 002 707 U1 shown.
  • WO 2015/186905 A1 discloses a filling unit with features of the preamble of the claim
  • the powder flow from the funnel into the die holes is supported in order to achieve a consistent filling and thus a constant weight of each individual tablet.
  • the impellers are usually available in flat or round blade shape with a circular hub.
  • the flow behavior or the properties of the powder are influenced by the immersion depth of the blades and the blade shapes (e.g. flat blades with a rectangular cross-section or cylindrical blades with a round cross-section).
  • the flat wing profile is suitable for free-flowing, non-sticky mixtures and ensures good filling of the die holes as long as the cohesive forces of the materials remain quite low.
  • round-shaped blades For powder materials with higher cohesive forces (fines content, moisture content, surface structure), round-shaped blades have a smaller contact area and cut better through the powder bed instead of compacting it.
  • the filling unit can be equipped with appropriate impellers and therefore manually converted in order to obtain an adapted dosing behavior.
  • the object of the present invention is to provide a filling unit for a rotary press and a method for providing an optimized rotary press which eliminate the above disadvantages.
  • the filling unit according to the invention for a rotary press with the features of claim 1.
  • the filling unit according to the invention comprises: A filling wheel which is designed to fill a medium to be dosed, in particular powder, into die holes of a die plate of the rotary press.
  • the filling wheel is designed as an impeller wheel.
  • the filling wheel has vanes and is designed to convey the medium to be dosed by means of a rotating movement by means of its vanes. With In other words, the blades of the impeller-shaped filling wheel move in a circular path around the center of the filling wheel.
  • the filling unit also has a dosing wheel, which is designed to precisely dose a quantity of medium to be dosed into the respective die holes of the die plate.
  • the dosing wheel is designed as an impeller.
  • the dosing wheel has vanes and is designed to precisely dose the quantity of medium to be dosed by sweeping over the die holes of the die plate with its vanes by means of a rotating movement. Excess medium is removed by sweeping over the die holes of the die plate.
  • the vanes of the dosing wheel which is designed as an impeller, move on a circular path around the center of the dosing wheel and sweep over the die holes in the process.
  • the filling wheel moves the powder into the die holes of the die plate.
  • the underside of the die hole is closed by a corresponding lower punch.
  • the lower punch can be raised slightly to a precisely specified position in order to define a precisely defined size of the die hole.
  • the portion of powder protruding upwards from the die hole is then "scraped off" - i.e. removed - using the dosing wheel.
  • the filling unit can have a feed wheel which is designed to supply the medium to be dosed to the filling wheel
  • the feed wheel is designed as an impeller.
  • the feed wheel has vanes and is designed to convey the medium to be fed to the filling wheel by means of a rotating movement by means of its vanes.
  • the vanes of the feed wheel designed as an impeller move on a circular path around the center of the feed wheel. In doing so, they convey the medium to be dosed to the filling wheel.
  • the filling unit further comprises at least one media feed unit which is designed to feed the medium to the filling wheel.
  • the media feed unit can feed the medium to the feed wheel.
  • the medium enters the filling unit via the media feed unit.
  • the media feed unit can comprise, for example, a funnel, a pipe or a hose.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller are designed in such a way that a conveying surface of the respective blades can be varied in its shape.
  • the conveying surface of the vanes is formed by the surface of the vanes with which the respective impeller conveys the medium.
  • the conveying surface is therefore the part of the vanes that is designed and configured to contact the medium during operation of the filling unit and to convey or dose it through the respective rotational movement.
  • the variation of the shape of the conveying surface can be achieved by rotating the blades of the filling wheel, which is designed as an impeller, Dosing wheel and/or feed wheel around their respective axis of extension.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as impeller wheels can be designed to be rotatable around their respective axis of extension.
  • the blades can be brought into at least two rotational positions by rotating around their respective axis of extension, in which the blades form differently shaped conveying surfaces.
  • the medium to be dosed can be conveyed with differently shaped conveying surfaces depending on the rotational position of the blades.
  • the rotation/turning of the blades can be achieved, for example, by a gear mechanism, a sliding mechanism, a crank drive, a cable pull, a piston drive and/or cam-controlled.
  • the blades can have a conveying surface in the form of a circular section, in particular a semicircle, on a first side, and a flat conveying surface can be provided on an opposite side. By simply rotating it by 180 degrees, the conveying surface can be switched back and forth between the shape of a blade with a circular cross-section and a blade with, for example, a square cross-section.
  • the wings can in particular have a triangular cross-section.
  • the cross-section of the wings can correspond to an isosceles triangle, in particular an equilateral triangle.
  • the wings can be Rotation can be brought into a position in which one corner of the triangular cross-section points downwards, thus forming an angular underside of the blades. In this way, a "sharp-edged" underside can be created.
  • the blades can also be rotated so that one corner of the triangular cross-section points upwards. In this case, one of the triangular sides of the cross-section forms the underside of the blades. This allows you to choose between the different undersides of the blades and a desired setting.
  • the conveying surface of the blades with a triangular cross-section can also be varied by rotating the blades. Here, too, you can choose between a conveying surface that is flat and a conveying surface that is angular.
  • the blades can in particular have a rectangular, in particular square, cross-section.
  • a rectangular cross-section two opposite sides can be shorter and the other two opposite sides can be longer.
  • the two longer sides of the rectangular cross-section form a larger side surface of the blades compared to the two shorter sides of the rectangular cross-section.
  • the shape of the conveying surface can be changed by a variable inclination of the blades with respect to a radial direction extending from the axis of rotation of the respective impeller.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can be designed in such a way that an angle spanned by the respective extension axis of the blades (or their extension) and a radial direction of the respective impeller extending from the axis of rotation can be varied.
  • the inclination of the blades can also be achieved using a gear mechanism.
  • a type of "cable pull solution" for changing the inclination of the blades is also conceivable.
  • the shape of the conveying surface can be changed by a variable curvature of the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller.
  • a curvature in the sense of this application means a deviation from a straight course, at least in sections, in particular in an arc.
  • the curvature can be a deviation from the radial direction extending from the axis of rotation of the respective impeller, at least in sections, in particular in an arc.
  • the blades can have at least one section with a variable curvature.
  • variable curvature of the wings can be achieved, for example, by means of a bimetal, a cable pull and/or a tension or pressure element. It is also conceivable that the variable curvature can be implemented only along one section or several sections of the wings. In particular, the variable curvature can be realized along the entire length of the wings.
  • the filling wheel, dosing wheel and/or feed wheel designed as an impeller can be adapted to different media with different flow behavior/properties without the individual impellers having to be replaced. This means that it is unnecessary to remove the respective impellers.
  • the shape of the conveying surface of the blades can be varied/changed when the respective impeller is mounted without the respective impeller having to be removed.
  • the shape of the conveying surfaces can be varied during the tablet manufacturing process or while the respective impellers transport the medium to be dosed through the filling unit.
  • the tablet manufacturing process or the transport of the medium to be dosed through the filling unit is briefly paused (interrupted), then the shape of the conveying surfaces is changed and then the tablet manufacturing process or the transport of the medium to be dosed through the filling unit is resumed. In both cases, dismantling the respective impellers or the filling unit is not necessary.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can be designed in such a way that they are parallel to the axis of rotation of the respective impeller.
  • the vanes are designed to be height-adjustable. For example, when the vanes, whose cross-section deviates from a circular shape, rotate around their respective axis of extension, the lower edge of the vanes can be kept at a constant height or level. This ensures that no gaps arise between the impeller and the element of the filling unit arranged underneath. In other words, by adjusting the height of the vanes, it can be ensured that while the medium is being transported by means of the respective impeller, the entire medium to be transported is captured and transported by the vanes.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller have a triangular or at least partially rounded cross-section.
  • cross-sections with other geometric shapes are also conceivable.
  • a quadrangular, in particular square, cross-section is conceivable.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can have a constant cross-section along a region of their respective extension axis.
  • the cross-section can be the same along the entire respective extension axis.
  • the area of the cross-section along the respective extension axis becomes larger or smaller in the radial direction from the respective axis of rotation or changes along the extension axis, in particular uniformly.
  • the number of blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can vary for each impeller and can be even and/or odd.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can be designed to be interchangeable.
  • the blades can be designed as a replacement element of the individual impellers. This means that the blades can be quickly and easily replaced with other blades, in particular with blades with a different cross-section. For example, if a blade is damaged, the corresponding blade can be replaced without having to replace the entire impeller.
  • the interchangeability increases the number of different shapes of the conveying surface.
  • the filling wheel, dosing wheel and/or feed wheel designed as an impeller can each have vanes that have a different cross-section along their respective extension axis.
  • the filling wheel, dosing wheel and/or feed wheel can each have differently shaped vanes.
  • the filling wheel can have vanes with a triangular cross-section
  • the dosing wheel can have vanes with a round cross-section
  • the feed wheel can have vanes with a square cross-section.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can be arranged in such a way that an extension of the respective extension axis runs at a distance from a rotation axis of the respective impeller.
  • the extension of the respective extension axis thus forms a tangent to a circle around the axis of rotation, the circle having a radius other than zero.
  • the blades are arranged at an angle with respect to a radial direction emanating from the center of the respective impeller.
  • the extension of the respective extension axis and the radial direction emanating from the center of the respective impeller form an angle that is other than zero, in particular between zero and 90 degrees, in particular between zero and 45 degrees, in particular between 0 and 20 degrees.
  • the filling unit can be designed in such a way that the direction of rotation and/or the speed of rotation of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can be varied.
  • the direction of rotation and/or the speed of rotation can be preset before the tablet production according to the respective medium (or powder).
  • the direction of rotation and/or the speed of rotation can be varied during the tablet production, i.e. during the conveying of the medium (or during the rotation of the respective impellers).
  • the direction of rotation can be varied independently of the speed of rotation.
  • the filling unit can be designed in such a way that the feed wheel can be switched into or out of a conveying path of the medium to be dosed. This can be done in particular by a pivoting movement of the feed wheel.
  • the feed wheel can be pivoted about a rotation axis of the dosing wheel designed as an impeller.
  • a corresponding A pivoting device can be provided.
  • the feed wheel can be bridged or bypassed in particular by means of a second media feed unit. It is also conceivable that the media feed unit can be designed to be displaceable in such a way that by moving the media feed unit it can be selected whether the conveying path of the medium to be dosed leads through the feed wheel or not.
  • the conveying path of the medium to be dosed refers to the path of the medium through the filling unit into the die bores.
  • the media feed unit can include a conveyor switch. Using this conveyor switch, the medium to be dosed can be fed either to the feed wheel or the filling wheel. This allows a choice to be made as to whether the medium is fed via the feed wheel or not, without having to remove the feed wheel or switch the feed wheel out of the conveyor path.
  • the filling unit can have at least one electric motor.
  • the electric motor can drive the filling wheel, dosing wheel or feed wheel designed as an impeller directly or indirectly, for example via at least one gear wheel and/or a toothed belt. It is also conceivable that several impellers are driven by the electric motor. However, it is also conceivable that each impeller is driven by a separate electric motor.
  • the electric motor can directly or indirectly, for example via at least one gear and/or a toothed belt, vary the rotational position of the blades and/or the inclination or the angle spanned by the respective extension axis of the blades and a radial direction of the respective impeller extending from the axis of rotation. It is conceivable that the rotational position of the blades and the inclination of the blades with respect to a radial direction extending from the axis of rotation of the respective impeller are varied by means of the same electric motor. However, it is also conceivable that a separate electric motor can be provided for varying the rotational position and the inclination of the blades.
  • several electric motors can form an electric motor group and can be designed as a replacement element.
  • several electric motors can be quickly and easily exchanged as one element for another electric motor group (e.g. in the event of damage).
  • the gears that transmit torque from the electric motors to the impellers can be designed as a gear group, whereby these can also be designed as a replacement element.
  • the electric motor can be designed in the form of a servo motor or a compressed air motor.
  • all electric motors can be designed in the form of servo motors or compressed air motors.
  • a pneumatic and/or hydraulic drive can be provided as an alternative or in addition to the electric motor.
  • Other types of drive as well as manual drive (“by hand") are also conceivable.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can be designed to be rotatable by more than 180°, in particular by 360°.
  • the blades can be designed to be freely rotatable by at least more than 90°, in particular by 180°, in particular by 270°, in particular by at least 360°.
  • the blades can therefore be brought into different rotational positions in the specified angular range.
  • the blades are designed to be rotatable about their respective extension axis.
  • the large angle of rotation e.g. at least 180°, makes it possible to use different (more) sides of the blade profile (cross-section of the blades) to transport the medium to be dosed on the die plate.
  • the blades of the filling wheel, dosing wheel and/or feed wheel designed as an impeller can have a cross-section that has at least one corner and a rounded section.
  • the blades can, for example, have a drop-shaped cross-section.
  • the above object is also achieved by the method according to the invention for providing an optimized rotary press with the features of the independent claim.
  • the method according to the invention comprises the steps: Provision of a first rotary press with an adjustable filling unit.
  • the adjustable filling unit has at least one element with at least one adjustable configuration parameter.
  • Configuration parameter in the sense of this application means a variable that influences the conveyance of the medium within the filling unit (or rotary press) and/or properties of the tablets produced (e.g. tablet quality).
  • the first rotary press with the adjustable filling unit can be used to try out different settings for a configuration parameter in order to find the optimal settings. Changing and/or replacing the corresponding elements relating to the configuration parameter is not necessary.
  • Provision of at least one second rotary press with an optimized filling unit has at least one element with a fixed configuration parameter, in which the tablet (or tablet batch) was produced with preferred properties.
  • this configuration parameter is transferred to a second rotary press.
  • This configuration parameter can then no longer be adjusted on the second rotary press.
  • the first rotary press is designed with such an optimized filling unit.
  • the first rotary press with an adjustable filling unit can be converted to a rotary press with an optimized filling unit.
  • the elements of the second rotary press already have the optimal configuration parameters and no longer need to be adjusted, these elements can be designed more simply. Additional elements/parts that are required for the Adjustability can be omitted. This makes the corresponding elements cheaper to manufacture. The second rotary press can therefore be made cheaper and smaller. In addition, the elements of the second rotary press can be made more robust and durable.
  • a certain start-up time is necessary. For example, it takes some time until the medium to be dosed is evenly distributed along the entire conveyor path.
  • the first tablets in a batch can have properties that differ from the other tablets in the same batch. It is therefore conceivable that, in order to identify the optimal configuration parameter, the first tablets in a batch are not taken into account when analyzing the tablets produced. However, it is also conceivable that the batch contains such a large number of tablets that the deviation in the tablet properties between the first tablets and the remaining tablets in a batch is negligible due to the high number of tablets in the batch.
  • the adjustable filling unit of the first rotary press is a filling unit as described above.
  • the adjustable configuration parameter can be the direction of rotation or the speed of rotation of the filling wheel, dosing wheel/or feed wheel designed as an impeller.
  • adjustable configuration parameters speed, pre-pressure, main pressure, Weight dosage, immersion depth or position of the pellet in the die.
  • Switching the feed wheel into or out of the conveying path of the medium to be dosed can also represent a configuration parameter.
  • a configuration parameter can represent the arrangement of the feed wheel in or outside the conveying path of the medium to be dosed.
  • the adjustable configuration parameter can be the shape of the conveying surfaces of the blades or the inclination of the blades.
  • the shape of the conveying surfaces of the blades can be changed by rotating the blades around their respective extension axis.
  • the inclination of the blades refers to the angle spanned by the respective extension axis (or its extension) of the blades and a radial direction of the respective impeller extending from the axis of rotation.
  • Figure 1 shows a side view of a rotary press 12 with a filling unit 10.
  • the medium to be dosed i.e. the powder to be pressed into the tablets
  • the tablets After the tablets have been pressed, they are conveyed out of the rotary press 12 via the discharge chute 15.
  • Figure 2 shows a top view of the filling unit 10 with a die plate 18 according to Fig. 1
  • the die plate 18 has a plurality of die bores 16 arranged on a circular path, into which the medium to be pressed into the tablets is metered by means of the filling unit 10.
  • Figure 3 shows a perspective view of a further embodiment of the filling unit 10.
  • the medium to be dosed is fed to a filling wheel 14 via the media feed unit 36.
  • the media feed unit 36 is designed as a straight pipe.
  • the filling wheel 14 is designed as an impeller 20 with vanes 22.
  • the filling wheel 14 conveys the medium to be dosed into the die holes 16 of the dosing slide 18. This is done by rotating the filling wheel 14 about its axis of rotation 42 (indicated by a dashed line).
  • the amount of medium to be dosed in the die holes 16 of the die plate 18 is precisely dosed by means of a dosing wheel 24.
  • the dosing wheel is designed as an impeller 26 with blades 28. This is done by rotating the dosing wheel 24 about its axis of rotation 42 (indicated by a dashed line).
  • the die holes 16 are swept over by the blades 28 of the dosing wheel 24 so that excess medium is removed and a precisely defined amount of medium remains in the die holes 16.
  • the amount of medium remaining in a die bore 16 is then pressed into a tablet. This can be achieved, for example, by means of a lower and/or upper punch, which are moved relative to one another (not shown).
  • Figure 4 shows a perspective view of another embodiment of the filling unit 10.
  • the illustrated Filling unit 10 has, analogous to the Figure 3 illustrated embodiment, a filling wheel 14 and a dosing wheel 24. In the present case, the die plate 18 with the die holes 16 is not shown. In this embodiment, the filling unit 10 also has a feed wheel 30.
  • the media supply unit 36 supplies the medium to be dosed to the feed wheel 30.
  • the feed wheel 30 is designed as an impeller 32 with vanes 34.
  • the medium to be dosed is supplied to a filling wheel 14 by means of the feed wheel 30. This is done by rotating the feed wheel 30 about its axis of rotation 42 (indicated by a dashed line).
  • the feed wheel 30 is arranged on a swivel device 33.
  • the swivel device 33 and thus also the feed wheel 30 can be swiveled about the swivel axis 35.
  • the swivel axis 35 and the rotation axis 42 of the metering wheel 24 are identical.
  • the feed wheel 30 can thus be swiveled out of the conveying path of the medium or swiveled into the conveying path of the medium.
  • the medium conveying path shown runs via the media feed unit 36, which feeds the medium to the feed wheel 30. This feeds the medium to the filling wheel 14 by rotating about its axis of rotation 42.
  • the filling wheel 14 fills the die holes 16 (not shown) by rotating about its axis of rotation 42 (not shown).
  • the medium filled into the die holes 16 is then precisely This is also achieved by rotating the dosing wheel 24 about its axis of rotation 42.
  • the conveying path of the medium then runs via the media feed unit 36, which feeds the medium directly to the filling wheel 14.
  • the medium is then filled into the die holes by the filling wheel and then precisely dosed by the dosing wheel 24 (see above).
  • the media feed unit 36 can have a conveyor switch (not shown) which optionally feeds the medium either directly to the feed wheel 30 or to the filling wheel 14. In this way, a choice can be made between a conveyor path with the feed wheel 30 and a conveyor path without the feed wheel 30, without the feed wheel 30 having to be pivoted out of the conveyor path.
  • Figure 5 shows a perspective view of a further embodiment of the filling unit 10.
  • the filling wheel 14, the feed wheel 30 and the dosing wheel 24 are hidden by a cover 51 and are not shown.
  • six electric motors 50 are shown, which are designed in the form of servo motors 52.
  • Two servo motors 52 are arranged opposite each other.
  • Each servo motor 52 can be controlled or operated individually and independently of the remaining servo motors 52.
  • the servo motors 52 can be designed as a servo motor group, which acts as a
  • the exchange elements in Figure 5 three upper servo motors 52 form an exchange element and the Figure 5 three lower servo motors 52 form another replacement element.
  • the servo motors 52 can be replaced quickly and easily.
  • Figure 6 shows a section of a perspective view of the filling unit 10 according to Fig. 5 from a different perspective.
  • the cover 51 is not shown, so that the Figure 5
  • the concealed filling wheel 14, the feed wheel 30 and the dosing wheel 24 are visible.
  • the filling wheel 14, the feed wheel 30 and the dosing wheel 24 are coupled to the servo motors 52 by means of gears 46, 48.
  • a torque can be transmitted from the respective servo motor 52 to the filling wheel 14, feed wheel 30 and dosing wheel 24 by means of the gears 46, 48.
  • the transmitted torque can then be used to rotate the filling wheel 14, the feed wheel 30 and/or the dosing wheel 24, which is designed as an impeller 20, 26, 32, and/or to adjust the rotational position, the inclination and/or the curvature of the blades 22, 28, 34 of the corresponding impeller 20, 26, 32.
  • Figure 7 shows a perspective view of a filling wheel 14, dosing wheel 24 and feed wheel 30 together with gears 46, 48.
  • Six servo motors 52 are indicated by dashed lines.
  • the torque is generated by three Figure 7 servo motors 52 arranged above are each transmitted to a first gear 46. This meshes with a second gear 46 and the second gear 46 meshes with a third gear 46, which is arranged on the filling wheel 14, dosing wheel 24 or feed wheel 30. Accordingly, the torque is transmitted by the three remaining (in Figure 7
  • the torque of the servomotors 52 (servomotors 52 arranged below) is transmitted to a first gear 48.
  • This gear meshes with a second gear 48 and the second gear 48 meshes with a third gear 48 which is arranged on the filling wheel 14, the dosing wheel 24 or the feed wheel 30. In this way, the torque of the respective servomotor 52 is transmitted to the filling wheel 14, the dosing wheel 24 or the feed wheel 30.
  • Figure 8 shows a perspective view of an impeller 20, 26, 32 according to Fig. 7
  • the impeller 20, 26, 32 shown can be a filling wheel 14, a feed wheel 30 or a dosing wheel 24.
  • the impeller 20, 26, 32 has an axis of rotation 42 about which the filling wheel 20, 26, 32 can rotate.
  • the impeller 20, 26, 32 has ten vanes 22, 28, 34.
  • the vanes 22, 28, 34 extend along a radial direction 45 that extends radially outward from the axis of rotation 42 and perpendicular to the axis of rotation 42.
  • the vanes 22, 28, 34 have an extension axis 38 that corresponds to the longitudinal axis of the vanes 22, 28, 34.
  • the wings 22, 28, 34 have a triangular cross-section in the present case, wherein in the position shown one corner of the triangle represents the lower edge of the respective wing 22, 28,34.
  • the impeller 20, 26, 32 has an upper gear 46 and a lower gear 48, whereby the impeller 20, 26, 32 and the two gears 46, 48 each have the same axis of rotation 42, i.e. are arranged coaxially to one another.
  • the impeller 20, 26, 32 is designed to be rotatable via the lower gear 48. This can be achieved, for example, by the lower gear 48 and the impeller 20, 26, 32 being coupled to one another in a rotationally fixed manner.
  • the impeller 20, 26, 32 If the impeller 20, 26, 32 is rotated, it turns about the axis of rotation 42 and conveys the medium located between the individual blades 22, 28, 34 with a respective conveying surface 40.
  • the upper gear 46 can rotate the blades 22, 28, 34 about their respective axis of extension 38. It is also conceivable that the height (displacement parallel to the axis of rotation 42), the inclination and/or the curvature of the blades 22, 28, 34 can be changed via the gear 46.
  • the elements required for this, for example in the form of a corresponding mechanism and/or electrics, can be arranged in a body 49 of the impeller 20, 26, 32.
  • the lower gear 48 is arranged between the upper gear 46 and the impeller 20, 26, 32.
  • the upper gear 46 is arranged between the lower gear 48 and the impeller 20, 26, 32 or that the functions of the upper and lower gears 46, 48 are swapped.
  • Figure 9 shows a perspective view of a further embodiment of the impeller 20, 26, 32.
  • the impeller 20, 26, 32 has straight blades 22, 28, 34 with a quadrangular (square) cross-section.
  • Figure 10 shows a perspective view of a further embodiment of the impeller 20, 26, 32.
  • an impeller 20, 26, 32 with inclined blades 22, 28, 34 is shown.
  • the extension of the respective extension axis 38 of the blades 22, 28, 34 does not intersect the center of the impeller 20, 26, 32 marked as "x" and designated by the reference number 47.
  • the respective extension axis 38 or its extension is therefore arranged at a distance from the center 47.
  • the blades 22, 28, 34 can be adjusted in such a way that the angle between the extension axis 38 (or its extension) of the respective blade 22, 28, 34 and the radial direction 45 can be varied.
  • a blade 54 can be brought from its first arrangement 56 shown in the sketch into a second arrangement 58 indicated by a dashed line.
  • the angle between the blade 54 in the first arrangement 56 and the radial direction 45 is different (larger) than that between the blade 54 in the second arrangement 58 and the radial direction 45.
  • the variation of the inclination is indicated here by a double arrow.
  • FIG 11 shows a perspective view of another embodiment of the impeller 20, 26, 32.
  • the present The embodiment of the impeller 20, 26, 32 has blades 22, 28, 34 with a curvature.
  • the blades 22, 28, 34 each have a first section 60 in which the blades 22, 28, 34 extend along the radial direction 45 (i.e. straight radially outwards).
  • the first section 60 is followed by a second section 62 which is curved in relation to the radial direction 45.
  • the second section 62 is followed by a third section 64 which is again straight (analogous to the first section 60).
  • a possible variable curvature of the blades 22, 28,34 of the impeller 20, 26, 32 is (analogous to Figure 10 ) by a double arrow and a first arrangement 66 and a second arrangement 68 (indicated by dashed lines) of the blade 70.
  • the outside diameter of the impeller 20, 26, 32 is also changed by varying the curvature.
  • a stronger curvature of the blades 22, 28, 34 in relation to the radial direction 45 results in a smaller outside diameter of the impeller 20, 26, 32.
  • a smaller (smaller) curvature of the blades 22, 28, 34 in relation to the radial direction 45 results in a larger outside diameter of the impeller 20, 26, 32.
  • Figure 12 shows a flow chart of a method for providing an optimized rotary press.
  • the subsequent process step of producing several tablets with the first rotary press 12, each with different settings of the configuration parameter, is designated by the reference number 74.
  • This process step 74 can be carried out as often as desired with as many different configuration parameters as desired.
  • the process step of analyzing the produced tablets for desired properties, especially quality characteristics, follows in order to identify a tablet with preferred properties among the produced tablets. This process step is described in the Figure 12 designated by the reference number 76.
  • the process step of identifying the configuration parameter setting at which the tablet with preferred properties was produced is identified by reference number 78.
  • the final process step of providing at least one second rotary press with an optimized filling unit wherein the optimized filling unit has at least one element with a fixed configuration parameter, in which the tablet with preferred properties is marked with the reference number 80. It is also conceivable that, alternatively or in addition to the provision of a second rotary press, the first rotary press can be converted into a rotary press with an optimized filling unit.
  • the flow chart shown is intended in particular to illustrate the temporal sequence of the individual process steps 72, 74, 76, 78 and 80.
  • the process steps 72, 74, 76, 78 and 80 are carried out one after the other in the sequence shown in the flow chart.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Claims (15)

  1. Unité de remplissage (10) pour une presse rotative (12), l'unité de remplissage (10) comprenant :
    une roue de remplissage (14) qui est réalisée pour remplir des trous de matrice (16) d'un disque de matrice (18) de la presse rotative (12) avec un milieu à doser ;
    la roue de remplissage (14) étant réalisée sous forme de roue à ailettes (20) et étant réalisée pour transporter le milieu à doser par un mouvement rotatif à l'aide de ses ailettes (22) ;
    une roue de dosage (24) qui est réalisée pour doser une quantité de milieu à doser dans les trous de matrice (16) respectifs du disque de matrice (18), en particulier aussi précisément que possible,
    la roue de dosage (24) étant réalisée sous forme de roue à ailettes (26) et étant réalisée pour doser la quantité du milieu à doser par un balayage des trous de matrice (16) du disque de matrice (18) avec ses ailettes (28) à l'aide d'un mouvement rotatif, en particulier aussi précisément que possible, et pour retirer le milieu en excès ;
    éventuellement une roue d'acheminement (30) qui est réalisée pour acheminer le milieu à doser jusqu'à la roue de remplissage (14),
    la roue d'acheminement (30) étant réalisée sous forme de roue à ailettes (32) et étant réalisée pour transporter le milieu à acheminer jusqu'à la roue de remplissage (14) par un mouvement rotatif à l'aide de ses ailettes (34) ;
    au moins une unité d'acheminement de milieu (36) qui est réalisée pour acheminer le milieu jusqu'à la roue de remplissage (14) et/ou la roue d'acheminement (30),
    les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) présentant respectivement une surface de transport (40), à l'aide de laquelle la roue à ailettes (20, 26, 32) respective transporte le milieu
    caractérisée en ce que
    les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) sont réalisées de telle sorte que la forme d'une surface de transport (40) des ailettes (22, 28, 34) respectives peut être changée, les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) présentant une section transversale triangulaire ou au moins partiellement arrondie, la forme de la surface de transport (40) pouvant être modifiée par une rotation des ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) autour de leur axe d'étendue (38) respectif,
    ou pouvant être modifiée par une inclinaison changeable des ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) par rapport à une direction radiale (45) s'étendant à partir de l'axe de rotation (42) de la roue à ailettes (20, 26, 32) respective,
    ou pouvant être modifiée par une courbure changeable des ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32).
  2. Unité de remplissage (10) selon la revendication 1, caractérisée en ce que les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) sont conçues de manière à pouvoir être déplacées parallèlement à l'axe de rotation (42) de la roue à ailettes (20, 26, 32) respective.
  3. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) présentent, le long d'au moins une région de leur axe d'étendue (38) respectif, en particulier le long de tout leur axe d'étendue (38) respectif, une section transversale constante.
  4. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) sont réalisées de manière interchangeable, en particulier sont réalisées sous forme d'élément interchangeable entre les roues à ailettes (20, 26, 32) individuelles.
  5. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que la roue de remplissage (14), la roue de dosage (24) et/ou la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) présentent respectivement des ailettes (22, 28, 34) comportant une section transversale différente le long de leur axe d'étendue (38) respectif.
  6. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) sont disposées de telle sorte qu'un prolongement de l'axe d'étendue (38) respectif s'étend de manière à être espacé d'un axe de rotation (42) de la roue à ailettes (20, 26, 32) respective.
  7. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que l'unité de remplissage (10) est réalisée de telle sorte que le sens de rotation et/ou la vitesse de rotation de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) peuvent être changés.
  8. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que l'unité de remplissage (10) est réalisée de telle sorte que la roue d'acheminement (30) peut être commutée dans un trajet de transport du milieu à doser ou hors de celui-ci, en particulier par un mouvement de pivotement, en particulier autour d'un axe de rotation (42) de la roue de dosage (24) réalisée sous forme de roue à ailettes (20, 26, 32).
  9. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que l'unité d'acheminement de milieu (36) comprend un aiguillage de transport à l'aide duquel le milieu à doser peut être acheminé sélectivement jusqu'à la roue d'acheminement (30) ou jusqu'à la roue de remplissage (14).
  10. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que l'unité de remplissage (10) présente au moins un moteur électrique (50), en particulier un servomoteur (52), la roue de remplissage (14), la roue de dosage (24) et/ou la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) étant entraînées par le moteur électrique (50), en particulier par le servomoteur (52), directement ou par l'intermédiaire d'au moins une roue dentée (48), et/ou la position de rotation des ailettes (22, 28, 34) et/ou l'inclinaison des ailettes (22, 28, 34) par rapport à une direction radiale (45) s'étendant à partir de l'axe de rotation (42) de la roue à ailettes (20, 26, 32) respective pouvant être changées par le moteur électrique (50), en particulier par le servomoteur (52), directement ou par l'intermédiaire d'au moins une roue dentée (46).
  11. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) sont réalisées de manière à pouvoir tourner de plus de 180°, en particulier de 360°.
  12. Unité de remplissage (10) selon l'une des revendications précédentes, caractérisée en ce que les ailettes (22, 28, 34) de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32) présentent une section transversale qui présente au moins un angle et une section arrondie.
  13. Procédé pour la fourniture d'une presse rotative optimisée comprenant les étapes consistant à :
    fournir une première presse rotative (12) comportant une unité de remplissage (10) réglable, l'unité de remplissage (10) réglable présentant au moins un élément comportant au moins un paramètre de configuration réglable ;
    produire plusieurs comprimés à l'aide de la première presse rotative (12) à l'aide de réglages respectivement différents du paramètre de configuration ;
    analyser les comprimés produits en termes de propriétés souhaitées, en particulier de caractéristiques de qualité, afin d'identifier, parmi les comprimés produits, un comprimé comportant des propriétés préférées ;
    identifier le réglage du paramètre de configuration avec lequel le comprimé comportant des propriétés préférées a été produit ;
    fournir au moins une seconde presse rotative comportant une unité de remplissage optimisée, l'unité de remplissage optimisée présentant au moins un élément comportant un paramètre de configuration prédéfini fixement, avec lequel le comprimé comportant des propriétés préférées a été produit, l'unité de remplissage réglable étant une unité de remplissage (10) selon l'une des revendications 1 à 12.
  14. Procédé selon la revendication 13, caractérisé en ce que le paramètre de configuration réglable est le sens de rotation ou la vitesse de rotation de la roue de remplissage (14), de la roue de dosage (24) et/ou de la roue d'acheminement (30) réalisées sous forme de roues à ailettes (20, 26, 32),
    ou la forme des surfaces de transport (40) des ailettes (22, 28, 34), la forme des surfaces de transport (40) pouvant être modifiée par une rotation des ailettes (22, 28, 34) autour de leur axe d'étendue (38) respectif, ou par une inclinaison des ailettes (22, 28, 34) par rapport à une direction radiale (45) s'étendant à partir de l'axe de rotation (42) de la roue à ailettes (20, 26, 32) respective, ou par un changement de la courbure des ailettes (22, 28, 34), ou est la commutation de la roue d'acheminement (30) dans le trajet de transport du milieu à doser ou hors de celui-ci.
  15. Procédé selon la revendication 13 ou 14, caractérisé en ce que, dans l'étape de
    production de comprimés à l'aide de la première presse rotative (12), les réglages pour plusieurs paramètres de configuration peuvent être modifiés en même temps.
EP21799237.9A 2020-10-23 2021-10-22 Unité de remplissage pour presse rotative et procédé de fourniture d'une presse rotative optimisée Active EP4232275B1 (fr)

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PCT/EP2021/079413 WO2022084538A1 (fr) 2020-10-23 2021-10-22 Unité de remplissage pour presse rotative et procédé de fourniture d'une presse rotative optimisée

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KR20230051572A (ko) 2023-04-18
DE102020127990A1 (de) 2022-04-28
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