Rotary press

Abstract

The invention relates to a rotary press comprising a rotor rotatable by means of a rotary drive, wherein the rotor has an upper punch guide for upper press punches and a lower punch guide for lower press punches as well as a die plate arranged between the punch guides, wherein the press punches interact with cavities of the die plate, wherein the rotary press further comprises a filling device by which powder material to be pressed is filled into the cavities of the die plate, and wherein the rotary press comprises a pressure device with an upper pressure unit and a lower pressure unit, which cooperate during operation with the upper press punches and with the lower press punches for pressing the powder material in the cavities of the die plate to form compacts,and wherein the rotary press comprises a stripping device for stripping compacts ejected after pressing by the lower press punches onto the upper side of the die plate, wherein the stripping device has a stripping channel arranged at least in sections above the die plate, so that compacts ejected by the lower press punches from the cavities onto the upper side of the die plate are guided along the stripping channel from the die plate to a first compact outlet.

Description

[0001] The invention relates to a rotary press comprising a rotor rotatable by means of a rotary drive, wherein the rotor has an upper punch guide for upper press punches and a lower punch guide for lower press punches as well as a die plate arranged between the punch guides, wherein the press punches interact with cavities of the die plate, wherein the rotary press further comprises a filling device by which powder material to be pressed is filled into the cavities of the die plate, and wherein the rotary press comprises a pressure device with an upper pressure unit and a lower pressure unit, which cooperate during operation with the upper press punches and with the lower press punches for pressing the powder material in the cavities of the die plate to form compacts,and wherein the rotary press comprises a stripping device for stripping compacts ejected after pressing by the lower press punches onto the upper side of the die plate, wherein the stripping device has a stripping channel arranged at least in sections above the die plate, so that compacts ejected by the lower press punches from the cavities onto the upper side of the die plate are guided along the stripping channel from the die plate to a first compact outlet.

[0002] Rotary presses usually have a multitude of upper and lower press punches, each paired with a cavity in a die table. During operation of the rotary press, the upper and lower press punches rotate together with the die table, with their axial movement controlled by control cams and guided by upper and lower punch guides. As it rotates, the die table passes through various devices on the rotary press, namely a filling device, in which powder material to be pressed is fed into the cavities of the die table, and a pressure device, in which the upper and lower press punches are pressed into the cavities, usually by upper and lower pressure rollers, to compress the powder material into pellets, such as tablets.Following the pressure device, the upper press rams are guided upwards out of the cavities, and the compacts produced in the cavities are pushed onto the upper side of the die plate by the lower press rams. Such rotary presses further comprise a stripping device for stripping the compacts ejected onto the upper side of the die plate by the lower press rams after the pressing process. The stripping devices comprise a stripping channel, which is arranged at least in sections above the die plate and guides the compacts ejected onto the upper side of the die plate from the die plate rotating beneath the stripping channel to a first compact outlet. The first compact outlet can, for example, be an outlet for compacts identified as good.

[0003] To ensure the smooth transport of tablets to the first pellet discharge, DE 10 2016 101 027 B4 and DE 10 2016 101 028 B4 feature a vacuum device in a product channel connected to a scraper. This vacuum device uses vacuum to suction tablets guided by the scraper toward the product channel from the die table and transport them away through the product channel. This prevents individual tablets from lying on the die table and enables smooth tablet transport. Air curtains can also be used to stabilize the tablets on the die table. For this purpose, a constant air stream can be directed at the tablets, pressing them onto the die table.

[0004] Although the vacuum systems described achieve reliable removal of tablets from the discharge channel once they are in the discharge channel, under unfavorable conditions, a buildup of tablets can occur after leaving the respective cavity, particularly since the tablets are accelerated vertically by the lower press rams during ejection. Stripping systems with vacuum systems also require considerable space in the rotary press, and reliable tablet removal requires a high flow rate and thus a large amount of extraction air, which is particularly expensive in the pharmaceutical sector.

[0005] JP S58125698 U discloses a rotary press with an air nozzle in an ejection area for produced pellets. High-pressure air can be discharged through a nozzle opening to convey a pellet from a stripper into a parallel outlet channel. A vacuum pipe is designed to convey the pellets discharged through the air nozzle into the desired channel without the risk of turbulence or the pellets lifting off.

[0006] Another device for conveying tablets is known from DE 2450065 A1. A suction conveyor pipe opens at a tablet ejection point and is connected to the housing of a cellular wheel. The wheel has a perforated wall in the area of ​​each cell, which runs past a suction opening in the housing, which is connected to a vacuum line.

[0007] DE 102005005012 A1 further describes a method and a device for sorting tablets on a rotary tablet press, in which defective tablets are guided into a defective channel with the aid of an air blast after a defective signal has been issued and are accelerated into the defective channel with the aid of a further air flow directed into the defective channel in order to avoid a return to the die plate.

[0008] Based on the explained prior art, the invention is therefore based on the object of providing a rotary press of the type mentioned at the outset, which enables the reliable conveying of compacts to the first compact outlet at all times in a space-saving and resource-saving manner.

[0009] The invention solves the problem by the subject matter of independent claim 1. Advantageous embodiments can be found in the dependent claims, the description and the figures.

[0010] For a rotary press of the type mentioned at the outset, the invention solves the problem in that the section of the stripping channel arranged above the die plate has a vacuum device by means of which compacts located on the die plate are sucked along the stripping channel to the first compact outlet.

[0011] The basic structure of the rotary press, as it is the subject of the present invention, was explained at the beginning. As explained, the upper and lower punch guides guide the press punches during their axial movement. The punch heads interact with control cams which move the press punches in the axial direction as they rotate with the rotor, in particular towards and away from each other. The control cams are generally made up of several control cam elements. They can accommodate the punch heads in corresponding guide receptacles or only rest against a mirror surface of the punch heads. The pressure device generally comprises an upper pressure roller and a lower pressure roller which interact with the punch heads of the upper and lower press punches, respectively. Several pressure devices of this type can also be provided, for example pre-pressure devices and main pressure devices.The ejector cam, as part of the control cams, moves the lower press rams upward after the pellets have been produced in the respective cavity, so that the pellets reach the top of the die plate, from where they are conveyed via the stripping channel to the first pellet discharge. The pellets can be tablets, in particular. The rotary press can accordingly be a rotary tablet press. The tablets can be pharmaceutical tablets, for example.

[0012] The stripping channel can, for example, be crescent-shaped. It can be arranged with a first section above the die table and with a second section radially outside the die table. It is stationary relative to the rotor, in particular the die table, so that the die table rotates beneath the stripping channel during operation of the rotary press. The stripping channel can be arranged a short distance above the die table. In particular, the distance is smaller than the thinnest compact to be produced in the rotary press, so that all compacts are caught in the stripping channel. As the die table rotates, the compacts ejected onto the top side of the die table by the lower press punches after the pressing process are stripped off the die table by the stripping channel, in particular a channel wall of the stripping channel, and conveyed in the direction of the first compact discharge.As explained, the first pellet discharge can, for example, be a good discharge for pellets that have been recognized as good by sensors of the rotary press.

[0013] According to the invention, the section of the stripping channel arranged above the die table has a vacuum device by means of which compacts located on the die table are sucked along the stripping channel to the first compact outlet. According to the invention, the vacuum device is therefore integrated into the stripping channel, and in particular into the section of the stripping channel located above the die table. The vacuum device is thus located close to the ejection point at which the compacts are pushed from the cavity onto the upper side of the die table by the lower press punches. The compacts are thus stabilized very early, in particular directly after leaving the respective cavity, by a gas flow, in particular an air flow, generated by the vacuum device and accelerated along the stripping channel in the direction of the first compact outlet.This ensures particularly reliable conveyance of the tablets through the stripping channel and reliably prevents tablet jams. At the same time, the vacuum device is arranged on the stripping channel or integrated into it in a compact and space-saving manner. Due to the arrangement of the vacuum device on the stripping channel, the vacuum device also needs to act over a shorter distance than if it were arranged in a product channel downstream of the stripping channel, so less compressed gas or compressed air is required to operate the vacuum device, thus conserving resources.

[0014] According to the invention, the vacuum device is arranged on the section of the stripping channel arranged above the die table in such a way that a suction effect is generated by the vacuum device on the pellets even during ejection from the cavities by the lower press rams. The vacuum device is therefore arranged on the stripping channel in such a way that a suction effect generated by the vacuum device on the pellets already occurs when the pellets are still located within the respective cavity during the ejection process by the lower press rams. The vertical acceleration of the pellets from the cavities caused by the lower press rams is superimposed and deflected by the suction effect generated by the vacuum device, thus stabilizing the pellet movement. Accumulation and mutual overtaking of pellets during ejection from the cavities are particularly reliably prevented.

[0015] According to one embodiment, the vacuum device can be arranged on the section of the stripping channel located above the die table in such a way that compacts ejected from the cavities by the lower press punches are overflowed by an air stream generated by the vacuum device. By arranging the vacuum device on the section of the stripping channel located above the die table, a particularly effective overflow of compacts on the die table is achieved due to the suction effect generated by the vacuum device. Such overflow leads not only to a suction force parallel to the bottom of the die table or the stripping channel in the direction of the first compact discharge, but also to a vertically upward force component.The combination of these forces acting on the pellets ensures that the pellets are conveyed particularly evenly and smoothly across the surface.

[0016] According to a further embodiment, the vacuum device can have vacuum nozzles integrated into the section of the discharge channel located above the die plate. The desired suction effect can be generated by the vacuum nozzles, preferably through the Venturi effect. The vacuum nozzles can blow out a pressurized gas, for example, compressed air, in the desired direction of movement of the pellets in order to create a vacuum that conveys the pellets in this direction of movement. The vacuum nozzles create a suction effect in the direction of movement of the pellets toward the first pellet discharge. This embodiment achieves particularly effective conveying of the pellets.

[0017] According to a further embodiment, vacuum nozzles integrated into the section of the stripping channel arranged above the die plate can be arranged above and / or near the ejection point of the compacts during ejection from the cavities by the lower press rams. By arranging the vacuum nozzles above and / or near the ejection point of the compacts during ejection from the cavities, the vertical acceleration of the compacts during the ejection process is advantageously deflected and stabilized by the suction effect, as explained above. Furthermore, by arranging them at or near the ejection point, the amount of compressed gas or compressed air required can be further reduced compared to the prior art.

[0018] According to a further embodiment, it can be provided that the stripping channel has a first channel wall leading the pellets to the first pellet outlet and a channel cover covering the stripping channel at least in sections, and that vacuum nozzles are arranged in the first channel wall and in the channel cover. The stripping channel can furthermore have a second channel wall opposite the first channel wall, wherein vacuum nozzles can also be arranged in the second channel wall. The first channel wall, the channel covers and the second channel wall can form a U-profile. They can be formed in one piece or from several sections. The aforementioned annular arrangement of the vacuum nozzles around the conveying space for the pellets delimited by the stripping channel achieves a particularly uniform and effective suction effect on the pellets in the direction of movement towards the pellet outlet.Opposite the channel ceiling, the stripping channel is open, particularly in the area of ​​its section located above the die table, so that the space defined by the stripping channel is limited on the underside by the surface of the die table, at least in the area of ​​the section located above the die table. A section of the stripping channel located radially outside the die table, however, can have a channel floor opposite the channel ceiling for guiding the pressed products.

[0019] According to a further embodiment, the vacuum nozzles can each have an elongated nozzle section extending in the conveying direction of the pellets to the first pellet outlet, and the vacuum device can direct a compressed gas, in particular compressed air, through the elongated nozzle section. The elongated section can be straight or curved. In this way, the Venturi effect, which can be used for suction as explained above, is utilized particularly effectively.

[0020] According to a further embodiment, the vacuum device can have a compressed gas supply device, in particular a compressed air supply device, for supplying the vacuum nozzles with compressed gas, in particular compressed air. The compressed gas supply device has a supply channel leading along the stripping channel from a compressed gas supply to the vacuum nozzles. The supply channel can be integrated into the stripping channel. These embodiments allow for a particularly compact and space-saving design in that the supply channel of the compressed gas supply device runs parallel to the stripping channel or is integrated into it.

[0021] According to a further embodiment, a sorting device can be provided for sorting out pellets ejected from the cavities into a second pellet outlet arranged upstream of the first pellet outlet in the conveying direction of the pellets. The sorting device comprises a sorting nozzle for sorting pellets into the second pellet outlet using compressed gas. The sorting nozzle can also be supplied with compressed gas via the compressed gas supply, for example, via the supply channel or another supply channel. If another supply channel is provided, it can also run parallel to the stripping channel or be integrated into it.The second compact outlet, which could, for example, be a reject outlet for compacts identified as defective by sensors on the rotary press, is located upstream of the first compact outlet in the direction of compact movement. When the sorting device is inactive, the compacts are conveyed past the second compact outlet through the stripping channel toward the first compact outlet. If, however, a compact is identified as defective and is to be sorted out accordingly, the sorting device is activated. In particular, a blast of compressed gas, in particular a blast of compressed air, is applied to the compact via the sorting nozzle at right angles to the direction of movement, so that the compact is diverted from its conveying path into the second compact outlet.While the first pellet discharge can, for example, lead to a good output for further processing of the produced pellets, the second pellet discharge can lead to a bad output for reject pellets. With the aforementioned configurations, the compressed gas supply required for sorting by the sorting device can advantageously be used simultaneously to supply the vacuum device. This further simplifies the structure and achieves further space savings.

[0022] According to a further embodiment, the stripping channel can extend all the way to the sorting device. This allows the suction effect to be generated particularly close to the point where the pellets are ejected from the cavities. The additional length of the stripping channel created in this way creates the negative pressure in the channel and thus also on the die plate. To achieve a particularly compact design, the sorting nozzle can be integrated into the stripping channel.

[0023] An embodiment of the invention is explained in more detail below with reference to the figures. They show schematically: Fig. 1 a rotary press according to the invention in a developed representation of the rotor, Fig. 2 a part of the rotary press Fig. 1 in perspective view, Fig. 3 a plan view of the stripping channel of the rotary press according to the invention, Fig. 4 a sectional view along the line BB in Fig. 3, Fig. 5 a sectional view along the line CC in Fig. 3, and Fig. 6 a diagram illustrating the overflow of a tablet produced in the rotary press.

[0024] Unless otherwise stated, the same reference symbols in the figures refer to the same objects.

[0025] The Fig. The rotary press according to the invention shown in Figure 1 is a rotary press for tablet production, in which powdered material is compressed into tablets. The rotor of the rotary press is driven in rotation by a rotary drive and comprises a die plate 10 having a plurality of cavities 12. The cavities 12 can be formed, for example, by bores in the die plate 10. The rotor further comprises a plurality of upper press punches 14 and lower press punches 16 that rotate synchronously with the die plate 10. The upper press punches 14 are axially guided in an upper punch guide 18, and the lower press punches 16 are axially guided in a lower punch guide 20. The axial movement of the upper press punches 14 and lower press punches 16 during the rotation of the rotor is controlled by upper control cam elements 22 and lower control cam elements 24.Furthermore, a filling device 26 is provided, which has a filling reservoir 28 and a filling chamber 30, which are connected via a filling tube 32. In this way, in the present example, powder material flows from the filling reservoir 28 via the filling tube 32 into the filling chamber 30 by gravity, and from there, via a filling opening provided on the underside of the filling chamber 30, into the cavities 12 of the die plate 10 by gravity.

[0026] The rotary press also comprises a pressure device 34. The pressure device 34 comprises a pre-pressure device with an upper pre-pressure roller 36 held on an upper holder 35 and a lower pre-pressure roller 38 held on a lower holder 37, as well as a main pressure device with an upper pressure roller 40 held on an upper holder 39 and a lower pressure roller 42 held on a lower holder 41. In addition, the rotary press comprises a stripping device 44 with a stripping channel 46. The stripping channel strips tablets 48, which have been conveyed onto the upper side of the die plate 10 by the lower press rams 16, from the die plate 10 and conveys the tablets 48 through the stripping channel 46 to a first compact outlet 58. The stripping channel 46 can, for example, be crescent-shaped and is explained in more detail with reference to the following figures.Furthermore, the rotary press comprises a control device 52 for controlling the operation of the rotary press.

[0027] In Fig. 2 are from the Fig. 1, only the die plate 10 with the cavities 12 and the stripping channel 46 of the stripping device 44 are shown for illustration purposes. The stripping channel 46 comprises a first section 54 arranged above the die plate 10 and a second section 56 arranged radially outside the die plate. The stripping channel 46 leads to the first compact outlet 58, via which, for example, tablets 48 that have been recognized as good can be removed from the rotary press for further processing. During operation, the die plate 10 rotates counterclockwise, as shown in Fig. 2 indicated by the arrow 60. In the direction of rotation of the die plate 10 and thus in the conveying direction of the tablets 48 into the stripping channel 46, a second pellet outlet 62 is arranged upstream of the first pellet outlet 58, through which, for example, tablets 48 identified as defective by sensors of the rotary press can be fed to a defective exit for rejects.

[0028] Based on the Fig. 3 to 5, the structure of the stripping device 44 according to the invention will be explained in more detail. In the sectional view of Fig. 4, a supply channel 64 is integrated into the stripping channel and is connected to a pressure supply (not shown in detail) of a compressed gas supply device, via which a compressed gas, in particular compressed air, is made available for vacuum nozzles of the vacuum device integrated into the stripping channel 46. In the example shown, compressed air is supplied as a compressed gas from the supply channel 64, which runs parallel to the conveying path of tablets 48 through the stripping channel 46, via a cross connection 66 to a U-shaped section 68 of the stripping channel 46. The U-shaped section 68 is formed by a first channel wall 70, a second channel wall 72 and a channel cover 74. As can be seen particularly in Fig. 5, the section 68 opens into several vacuum nozzles 76, which are also arranged along a U-shaped profile. The compressed air supplied via the supply channel 64 is guided via the U-shaped section 68 to the vacuum nozzles 76 and is blown out by them in the desired direction of movement of the tablets 48 conveyed through the stripping channel 46. This creates a suction effect on the tablets 48 ejected from the cavities 12 by the lower press punches 16, in the present example already during the ejection process, when the tablets 48 are still at least partially in the cavity 12. As can be seen in particular in Fig. 5, the stripping channel 46 has, in its section located radially outside the die plate 10, a discharge chute section 78 as a channel bottom, via which the tablets 48 conveyed by the suction effect of the vacuum device reach the first pellet outlet 58 due to gravity. Fig. 5 further shows that a plurality of vacuum nozzles 76 are arranged in each of the first channel wall 70, the second channel wall 72, and the channel ceiling 74. The vacuum nozzles 76 can each have an elongated nozzle section extending in the conveying direction of the tablets 48 to the first pellet outlet 58, through which the compressed gas or compressed air is passed. In the section 54 arranged above the die plate 10, however, the stripping channel 46 has no bottom, so that the space delimited by the first and second channel walls 70, 72 and the channel ceiling 74 is formed on its underside by the die plate 10 rotating beneath the stripping channel 46.

[0029] Integrated into the stripping channel 46 is also a Fig. 4 and Fig. 5 hidden and in Fig. 3, a sorting nozzle 80 is integrated, which is part of a sorting device for sorting out tablets 48 that have been identified as poorly, for example by sensors of the rotary press, into the second compact outlet 62. A further supply channel 82 is connected to the compressed gas supply, which is also integrated into the stripping channel 46 and supplies the sorting nozzle 80 with compressed gas, in particular compressed air. By briefly emitting a burst of compressed gas through the sorting nozzle 80, tablets 48 that have been identified as poorly can be specifically blown out of their conveying path into the second compact outlet 62. As can be seen in the figures, the stripping channel 46 extends as far as the sorting device, in particular the sorting nozzle 80. In particular, the sorting nozzle 80 is integrated into the stripping channel 46, as explained.

[0030] As already explained, the vacuum device according to the invention, in particular the vacuum nozzles 76, ensures that a suction effect on tablets 48 is already generated during ejection by the lower press rams 16 from the cavities 12. Furthermore, the design of the vacuum device, in particular the arrangement of the vacuum nozzles 76, ensures that the tablets 48 ejected from the cavities 12 by the lower press rams 16 and located on the die plate 10 are overflowed by the air flow generated by the vacuum nozzles 76.

[0031] The flow of air 84 over a tablet 48 is in Fig.6. Due to the overflow, two force components act on the tablet 48: on the one hand, in the desired direction of movement of the tablet 48, as illustrated by arrow 86, and on the other hand, vertically upward, as illustrated by arrow 88. In this way, a particularly reliable conveyance of the tablets 48 is ensured. List of reference symbols 10 die plate 12 cavities 14 upper press rams 16 lower press punches 18 upper punch guide 20 lower punch guide 22 upper control cam elements 24 lower control cam elements 26 Filling device 28 Filling reservoir 30 filling chamber 32 filling tube 34 Printing device 35, 39 upper brackets 37, 41 lower brackets 36 upper pre-print roll 38 lower pre-print roll 40 upper pressure roller 42 lower pressure roller 44 Stripping device 46 scraper channel 48 tablets, pellets 52 Control device 54 first section 56 second section 60 Arrow 62 second pellet discharge 64 supply channel 66 Cross connection Section 68 70 first canal wall 72 second canal wall 74 Sewer ceiling 76 vacuum nozzles 78 Drain chute section 80 sorting nozzle 82 supply channel 84 Airflow 86 Arrow 88 Arrow

Claims

[1] Rotary press, comprising a rotor rotatable by means of a rotary drive, wherein the rotor has an upper punch guide (18) for upper press punches (14) and a lower punch guide (20) for lower press punches (16) as well as a die plate (10) arranged between the punch guides (18, 20), wherein the press punches (14, 16) interact with cavities (12) of the die plate (10), wherein the rotary press further comprises a filling device (26) by which powder material to be pressed is filled into the cavities (12) of the die plate (10), and wherein the rotary press comprises a pressure device (34) with an upper pressure unit (40) and a lower pressure unit (42), which in operation cooperate with the upper press punches (14) and with the lower press punches (16) for pressing the powder material in the cavities (12) of the die plate (10) to form pellets (48),and wherein the rotary press comprises a stripping device (44) for stripping compacts (48) ejected after pressing by the lower press punches (16) onto the upper side of the die plate (10), wherein the stripping device (44) has a stripping channel (46) arranged at least in sections above the die plate (10), so that compacts (48) ejected by the lower press punches (16) from the cavities (12) onto the upper side of the die plate (10) are guided along the stripping channel (46) from the die plate (10) to a first compact outlet (58), wherein the section (54) of the stripping channel (46) arranged above the die plate (10) has a vacuum device, through which compacts (48) located on the die plate (10) are guided along the stripping channel (46) to the first compact outlet (58) be sucked, characterized bythat the vacuum device is arranged on the section (54) of the stripping channel (46) arranged above the die plate (10) in such a way that a suction effect is generated by the vacuum device on compacts (48) already during ejection by the lower press punches (16) from the cavities (12). [2] Rotary press according to claim 1, characterized by that the vacuum device is arranged on the section (54) of the stripping channel (46) arranged above the die plate (10) in such a way that compacts (48) ejected from the cavities (12) by the lower press rams (16) are flowed over by an air stream (84) generated by the vacuum device. [3] Rotary press according to one of the preceding claims, characterized by that the vacuum device has vacuum nozzles (76) integrated into the section (54) of the stripping channel (46) arranged above the die plate (10). [4] Rotary press according to claim 3, characterized by that vacuum nozzles (76) integrated into the section (54) of the stripping channel (46) arranged above the die plate (10) are arranged above and / or near the ejection location of the compacts (48) when they are ejected from the cavities (12) by the lower press rams (16). [5] Rotary press according to one of claims 3 or 4, characterized by that the stripping channel (46) has a first channel wall (70) leading the compacts (48) to the first compact outlet (58) and a channel cover (74) covering the stripping channel (46) at least in sections, and that vacuum nozzles (76) are arranged in the first channel wall (70) and in the channel cover (74). [6] Rotary press according to claim 5, characterized by that the stripping channel (46) further comprises a second channel wall (72) opposite the first channel wall (70), and that vacuum nozzles (76) are also arranged in the second channel wall (72). [7] Rotary press according to claim 6, characterized by that the first channel wall (70), the channel ceiling (74) and the second channel wall (72) form a U-profile. [8] Rotary press according to one of claims 3 to 7, characterized by that the vacuum nozzles (76) each have an elongated nozzle section extending in the conveying direction of the compacts (48) to the first compact outlet (58), and that a compressed gas, in particular compressed air, is passed through the elongated nozzle section by the vacuum device. [9] Rotary press according to one of claims 3 to 8, characterized byin that the vacuum device has a compressed gas supply device, in particular a compressed air supply device, for supplying the vacuum nozzles (76) with compressed gas, in particular compressed air, wherein the compressed gas supply device has a supply channel (64) leading along the stripping channel (46) from a compressed gas supply to the vacuum nozzles (76). [10] Rotary press according to claim 9, characterized by that the supply channel (64) is integrated into the stripping channel (46). [11] Rotary press according to one of the preceding claims, characterized bythat a sorting device is further provided for sorting out compacts (48) ejected from the cavities (12) into a second compact outlet (62) arranged upstream of the first compact outlet (58) in the conveying direction of the compacts (48), wherein the sorting device comprises a sorting nozzle (80) for sorting out compacts (48) into the second compact outlet (62) by means of compressed gas. [12] Rotary press according to claim 11 and one of claims 9 or 10, characterized by that the sorting nozzle (80) is also supplied with compressed gas by the compressed gas supply. [13] Rotary press according to one of claims 11 or 12, characterized by that the stripping channel (46) extends to the sorting device. [14] Rotary press according to one of claims 11 to 13, characterized by that the sorting nozzle (80) is integrated into the stripping channel (46).

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