WO2019145138A1 - Fangschiene für eine rundlaufpresse - Google Patents
Fangschiene für eine rundlaufpresse Download PDFInfo
- Publication number
- WO2019145138A1 WO2019145138A1 PCT/EP2019/050289 EP2019050289W WO2019145138A1 WO 2019145138 A1 WO2019145138 A1 WO 2019145138A1 EP 2019050289 W EP2019050289 W EP 2019050289W WO 2019145138 A1 WO2019145138 A1 WO 2019145138A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- curve
- pressure roller
- rotary press
- guide block
- station
- Prior art date
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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
- B30B15/02—Dies; Inserts therefor; Mounting thereof; 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
-
- 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
- B30B11/34—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses for coating articles, e.g. tablets
-
- 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
- B30B11/085—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 for multi-layer articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0023—Drive arrangements for movable carriers, e.g. turntables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/026—Mounting of dies, platens or press rams
Definitions
- the invention relates to a rotary press comprising at least one pressing station, each with a height-adjustable upper and lower pressure roller, which are mounted by means of axes in the at least one pressing station, wherein curved Oberstem- pel with punch heads of the upper pressure roller by means of a control cam are supplied and a lift curve on the upper punch raises a highest point above a filler.
- the invention relates to a height-adjustable catching curve which is designed to be height-adjustable with respect to the upper pressure roller.
- the rotary press comprises a pre-pressure curve, which is integrated in a guide block.
- the invention is also suitable for the production of multilayer or jacket core compacts.
- the rotary press comprises at least one main press station, and, depending on the number of layers to be pressed, optionally further filling, metering and / or pressing stations, as well as in the case of jacket core compacts via a Kerneinlege station and if necessary, pressing stations.
- Rotary presses generally have a rotor with a circular base area, which has an upper and a lower punch guide, and a mattress disk arranged therebetween.
- This die plate has openings or die bores into which the material to be pressed is filled in a filling station by means of a filling device. By means of a dosing the stuffed into the die holes material is dosed to the desired weight.
- the upper and lower punches are moved axially on the rotor circumference by means of stationary control curves, which are located above and below the rotor and are fastened to the respective stationary cam carriers.
- head-guided or roller-guided punch shafts are used.
- the upper punch guide of the rotor is formed by axial bores in the upper part of the rotor for the upper punch shanks.
- the lower punch guide by axial Holes formed in the lower part of the rotor for the Unterstempel2020fte. These axial bores are arranged in alignment with the die bores of the die plate, so that the upper punches and the lower punches can move within the die bore during the filling and pressing process.
- the pressing of the compacts takes place in a pressing station of the rotary press.
- a pair of upper and lower punch are successively pulled by two pressure rollers, which are arranged one above the other in a Druckrollenstation.
- Such a pressure roller station is described, for example, in DE 197 05 092 C1.
- a pressing station is firmly anchored in the carrier plate of a rotary press and has an upper and a lower pressure roller, wherein the pressure rollers are fastened by means of bearing blocks on or in the guide column of the pressing station and arranged adjustable to each other.
- the pressure rollers By positioning the pressure rollers to each other For example, the upper and lower dies are moved against each other as they pass through the pair of pressure rollers, thereby exerting a pressing force on the press material between the punches within the die. By the transmission and action of the pressing force, a tablet or a compact is produced from the powdery pressing material.
- the formation of a compact is based on a compaction process in which the pressing tools move towards one another within the die bore, whereby any air present between the pressing surfaces of the stamps, which is located between the powder particles, is pushed out.
- the densification results in a substantially complete removal of air-filled interstices between the powder particles. Due to the absence of these intermediate spaces, the pressing particles get in contact with each other, which results in a toothing and connection of the particles with one another due to the transfer of the pressing force to the pressing particles. It is obtained a compact having a predefined hardness. If only one pressing station is available in a rotary press, this is called the main press station.
- the corresponding compaction process is referred to as main compaction.
- the upper punches are located above the filling device. If the rotary press is equipped with a printing station, after the filling and dosing process, the lower punches guide the upper punches downwards in the direction of the die plates until the upper punches dive into the die bores of the die plate. By dipping the upper punches close the die openings and form the upper end of the pressing chamber during the compression process. The side walls of the die bore form the side walls of the pressing space for the compact to be obtained, while the pressing surface of the lower punch represents the underside of the pressing space.
- the present invention relates to the cams of the at least one pressing station, which feed the upper punches of the upper pressure roller and lift after the pressing process with the elevator curve to its highest point above the filling device.
- the upper punches are located above the filling device during the filling and dosing process.
- the upper punches are lowered at the end of the filling device by means of located to the left of the upper pressure roller pull-down curve in the direction of the die plate.
- the matrices filled flush with the pressing material by the dosing unit leave the dosing chamber of the filling device.
- the die bores it is preferred for the purposes of the invention for the die bores to be covered by a resilient cover rail until the plungers of the upper punches are inserted into the die bore become.
- the resilient cover rail preferably ends shortly before the upper punch plunges into the die bore. If the die were to be flush filled by this time, the die bore would be open at the moment of release and material would be lost through thrown-out material before the punch can close the upper die bore. In order to prevent this undesired loss, it is preferred for the purposes of the invention that the Lower punch, as well as the flush-filled dies are below the resilient cover rail, be deducted 2 to 3 mm down. Since the material column in the die bore rests on the lower punch, the material column follows the lower punch movement and the upper material column is located 2 to 3 mm below the upper edge of the die at the end of the lower punch removal movement.
- the centrifugal force still acts on the column of material, so that an outwardly rising slope results in the bore, which ends, for example, 1 to 1.5 mm below the upper edge of the die. This means that due to the lowering of the material column, despite the centrifugal force, the pressing material can advantageously not leave the die due to the remaining outer bore wall.
- the material reduction of 2 to 3 mm also provides another advantage. If the upper punches at the end of the spring-loaded cover rail penetrate into the flush-filled die at high speed, spontaneous deflagration and thus uncontrolled loss of material would occur. In addition, with the rapidly escaping air from the press material, a portion of ultrafine dust would escape upwards out of the die bore, which disadvantageously leads to losses and to severe contamination of the rotary press. As a result of the abovementioned lowering of the material, the upper punches no longer dip into a flush-filled die, but preferably into an empty space, and the upper punches advantageously first make contact with the pressing material after a dip of 1 to 2 mm.
- the die bore is closed by the upper punches and lower punches, and the air contained in the press material can advantageously be removed during the pre-pressing and main pressing process by the small air gap of, for example, 0.01 mm between the die bore and the upper die. and under-stamp escape, without a noteworthy loss of material occurs.
- the upper punch, the lower punch and the pressing material located between these pressing tools are located in the die bore, the upper punch of the rotary press of the upper pressure roller and the lower punch of the lower pressure roller are fed. This is done by means of the pull-down and lift curves and rails provided for this purpose. Between Pressure rollers, the pressing tools are further supplied to each other, whereby the pressing force is exerted on the pressing material, which produces a stable tablet with good binding properties of the material to be pressed.
- a pull-down curve is usually arranged to the left of the upper pressure roller, while the lift curve is arranged to the right of the upper pressure roller.
- the pull-down curve is responsible for lowering the upper punch in the area of the die bore, while the lift curve pulls the upper punch out of the die bore when the pressing of the compact is completed.
- the pull-down curve and the lift curve for the upper punches are two separate separate cam elements, which are rigidly and stationarily fastened to the upper cam carrier in a positive and form-fitting manner. This creates a gap between the pull-down curve and the lift curve in the upper curve run below the upper pressure roller.
- the immersion depth of the upper punch is a maximum of 6 to 8 mm.
- the pull-down curve for the upper punches with an immersion depth of 2 to 3 mm contributes to this maximum punch indention depth, while the remaining immersion depth is made possible by means of the adjustable upper pressure roller.
- a disadvantage of the gap located between the pull-down curve and the lift curve within the upper curve sequence is that the upper punches can submerge uncontrollably into the die bore in the area below the upper pressure roller.
- conventional concentric presses on the upper cam carrier inside a rigid safety or catch curve This also avoids that the shaft heads put the upper punch on the rotor top of the rotary press.
- the rigid catching curve ensures a minimum distance of the shaft heads from the rotor upper part so that the upper punches can be reliably and reliably taken over by the upper punch lift curve from their lowest position.
- the rigid catch rails are usually mounted in a lower inner region of the upper cam carrier.
- a small filling depth from the second layer is made more difficult in the production of multilayer compacts, because the upper punches, due to their own weight and the immersion speed, densify the pressing material of the first layer too much and uncontrollably, so that depending on the stiffness of the individual upper punch a strongly fluctuating weight of the second filling by the different height of the resulting space above the pressed first layer is formed.
- the surface of the upper side of the first compact layer may be so smooth and closed that the formation of a durable bond between the press material of the first layer and the press material of the second layer considerably more difficult.
- These so-called over-pressed compacts tend to cover at the parting plane between the first and the second powder layer and must generally be disposed of as scrap.
- a rotary press for the production of core core compacts corresponds to a three-layer rotary press in which the second filling device is replaced by a core insert module. After filling the first layer in the die bore, it has proven to be advantageous if it is pressed by the upper pressure roller in a first pressing station to light. This pressing of the first powder layer in the production of Mantelkern- compacts is referred to as "tamping" in the context of this application, which are used synonymously because of the terms “Tamping Station” and "Anpressstation”.
- a rotary press comprising at least one pressing station, each with a height-adjustable upper and lower pressure roller, which are mounted by means of axes in the at least one pressing station, with cam-guided upper punches with punch heads or rollers being fed to the upper pressure roller by means of a control cam , and a lift curve, which the upper punches after the pressing operation to a highest point above a filling device lifts.
- the rotary press equipped in this way is characterized in that in the at least one pressing station below the upper pressure roller there is a catching curve that is height-adjustable relative to this upper pressure roller.
- a pressing station is a pressing station with a height-adjustable upper and a height-adjustable lower pressure roller, between which upper and lower punches are guided by means of control cams, wherein the control cams form an upper and lower curve run and by merging the press punches in the Between the two pressure rollers, the powder material to be pressed in the die bores is pressed into compacts.
- the upper punches are fed by means of a control curve of the upper pressure roller of the at least one pressing station and lifted after the pressing process with an elevator curve to its highest point above the filling device.
- the pressing station according to the invention may advantageously be a main pressing station or a pre-pressing station.
- a main press station of a rotary press the powder material to be compacted is pressed into compacts by connecting the powder particles to one another as a result of the applied main pressing force.
- a pre-press, tamping or pre-press station a powder material located in a press room is slightly pressed with a smaller pre-printing, tamping or pre-pressing force compared to the main press force.
- a prepress, tamping or pre-press station serves to vent the powder material to be pressed or, in the case of the production of multilayer or coated core pellets, to prepare the lower powder layer for receiving the tablet core or other material layers.
- venting the molding material escapes advantageously located between the powder particles air from the press material.
- the time available for pressing the compacts in the main press station is essentially exclusively available for the pressing process and no longer has to be used for venting. This improves the stability of the resulting compacts and thus increases the product quality.
- In the at least one pressing station of the rotary press is below the upper pressure roller in front of this upper pressure roller height adjustable catch curve.
- the catching curve is advantageously made height-adjustable with respect to the upper pressure roller, so that the distance between the catching curve and the upper pressure roller is variably adjustable.
- the height adjustability of the catch curve according to the invention makes it possible to vary the upper punch immersion depth and the contact pressure. It is preferred in the sense of the invention that the height adjustment of the catching curve takes place in particular synchronously, for example by the coupling on the pressure roller pin. It is particularly preferred that the height adjustment of the capture curve can preferably be carried out automatically with the adjustment of the upper form roller.
- the capture curve is formed as a closed curve.
- the contact force is transmitted to the heads of the upper punch, without the punch heads come into contact with the upper pressure roller. Since the catching curve according to the invention is closed downwards, it advantageously also fulfills the function of a catching curve in the sense that it is prevented that the upper punches can enter the die bores uncontrollably and come into mechanical contact with the lower punches. This advantageously tool damage can be excluded.
- the invention relates to a height-adjustable catching curve, which at a passage of the upper punch along a bottom dead center of the upper pressure roller a minimum distance of preferably 0.09 to 0.11 mm, particularly preferably 0.1 mm has the punch heads of the upper punch.
- the catching curve according to the invention is in a pressing position with a distance of preferably 0.09 to 0.11 mm, particularly preferably 0.1 mm below the punch head of a punch, when the punch heads of the upper punch pass the upper pressure roller ,
- the catching curve is further connected at a defined distance with the upper pressure roller axis.
- the upper catching curve follows automatically. table an adjustment of the upper pressure roller.
- the safety catch advantageously has a minimum safety distance of preferably 0.09 to 0.11 mm, particularly preferably 0.1 mm, from the bottom dead center of the upper pressure roller at all times.
- this safety distance is increased by the height of the punch heads of the upper punches. This reliably prevents uncontrolled immersion of the upper punches into the die bores, as a result of which damage to pressing tools due to undesired mechanical punch contacts is prevented. Furthermore, impermissibly large gross filling depths in multilayer tablets, which lead to fluctuating tablet weights, are reliably prevented.
- the invention relates to a catching curve which is connected by means of a connecting piece with the axis of the upper pressure roller.
- the connection according to the invention between the catching curve and the upper pressure roller axis by means of a connecting piece has proved to be particularly advantageous for the production of very flat single-layer tablets, since the catching curve according to the invention is located at a distance of only 0.09 to 0.1 mm below the upper punch immersion depth ,
- the adjustment of the catching curve relative to the pressure roller takes place manually and / or automatically.
- a manual and / or automatic execution of the adjustability of the catching curve relative to the pressure roller advantageously ensures a flexible use of the rotary concentric presses according to the invention, in which case it is possible in particular to respond to individual customer requirements.
- the invention relates to the connection piece between the catching curve and the upper pressure roller axis, which has a bore which is mounted on a collar bushing, wherein the collar bushing is attached to the rear, rear end side of the axis of the upper pressure roller.
- the connecting piece by means of recesses in the backs of a pull-down curve and an elevator curve at an upper curve sequence axially and radially attachable and / or feasible.
- the upper curve run which is formed by a circular cam carrier and advantageously consists of several curve elements, is used to guide and control the upper punch.
- a connecting piece is provided in the region of the upper curve run, which can be attached by means of recesses in the backs of the pull-down curves or the lift curves as components of the upper curve run ,
- the fastening of the connecting piece to the low-tension curve and the elevator curve takes place by means of releasable fastening means.
- the connecting piece advantageously has a wide, rectangular lower area with rounded corners, which serves for fastening to the upper curve run of the rotary press, and a narrow, upper area in which a collar bushing is mounted in a bore, wherein the collar bushing picks up the axis of an upper pressure roller.
- the invention relates to a rotary press, in which the at least one pressing station is a pre-press station with height-adjustable upper and lower prepressure rollers, wherein in the upper curve sequence the at least one pre-press station, which is composed of several curve elements, a closed form pressure curve is arranged. It is preferred that the closed pre-pressure curve also acts as a tuck curve for the turrets of the rotary press by the closed pre-pressure curve, the uncontrolled immersion of the upper punches in the die holes of the die plate due to their design and positioning within the rotary press effective prevented.
- Jacket core compacts are compacts in which an insert is pressed inside a compact.
- Such an inserter is also referred to as a "core”. It is preferred if this is a chip or a foil as information carrier or the core consists of a carrier material deviating from the base material of the compact.
- the rotary press used here preferably corresponds to a three-layer rotary press in which a second filling device is replaced by a core insert module.
- this powder layer is slightly pressed by an upper prepressure roller, whereby a uniform, plane-parallel closed surface of the powder material is obtained.
- This slight pressure on the surface ensures that, when the core is inserted later, the core can be placed on this pressed and smooth surface without causing powder dust to whirl up.
- the insertion of the core is facilitated by the fact that the surface of the powder material is formed plane-parallel to the pressing surfaces of the lower punch.
- a rotary press can be provided for the production of jacket core compacts, in which the pre-printing station is equipped with a capture curve according to the invention, which immerses the dies in the area of this pre-printing station by a defined and reproducibly adjustable amount in the range of 0.1 mm increments into the die bore.
- the use of a closed pre-pressure curve according to the invention compared to the use of a printing roll enables improved press results.
- the use of the closed admission pressure curve according to the invention ensures a homogeneous immersion of the upper punches into the die bores in the sense that all the punches enter the die bores with the same immersion depth, except for a virtually vanishing tolerance.
- the press force signals can be reliably detected and evaluated as an important measure to characterize the manufacturing process without noise signals. It was completely surprising that in particular an improved weight control of the resulting compacts can be provided. Furthermore, the improved reliability of the press force signals facilitates the sorting out of defective compacts, thereby reliably avoiding erroneous sorting out of compacts whose weight lies within a permissible tolerance range. It is preferred that the closed pre-pressure curve forms a lower region of a guide block, which is integrated in the upper curve sequence of the at least one pre-pressure station.
- the guide block may in particular be made of plastic, but it may also be preferred for other applications if the guide block is made of other material, such as metal.
- the lower area of the plastic guide block is formed by three different areas: in the middle in the lower area of the guide block is the area of the capture curve with which the punch heads of the upper punches cooperate in such a way that they would fall from a possible uncontrolled fall caught this catching curve. Starting from the middle, lower area of the guide block, the areas of the pull-down curve and the lift curve for the upper punches extend to the left and right.
- the punch heads of the upper punches are guided along the pull-down curve into a working area below the upper pressure roller, where the pressing process for producing the pressed bodies takes place. It is also known to the average person skilled in the art that in the area of the elevator curve the punch heads of the upper punches are again guided to the starting height of the upper punches predetermined by the design of the upper cam carrier after completion of the pressing operation.
- the three areas of the plastic guide block are connected to one another such that a smooth guidance of the punch heads is made possible.
- the plastic guide block is configured such that it has a front side, a back side and side surfaces, wherein the front side and the rear side of the plastic guide block have a uniform curvature to the outside, wherein the curvature of the front and back of the plastic guide block simulates a circular base of a rotor of the rotary press.
- the front side of the plastic guide block is the side of the guide block facing an outside observer.
- the rear side of the plastic guide block faces the central components of the rotary press, in particular the rotor. gate and die plate.
- the rotor of a rotary press generally has a circular base surface and is mounted centrally about an axis of rotation. The rounding of this rotor of the rotary press is reproduced from the front side and the rear side of the plastic guide block to the effect that the guide block in the area of the rotor has substantially the same roundness as the rotor.
- the guide block does not completely surround the rotor of the rotary press, but only exists in the region of a pressing station and therefore only follows the rounding of the rotor within a defined angular range. It is preferred that this angular range for the front and the back of the guide block be substantially equal, thereby achieving that the curvature of the front and the back of the plastic guide block is formed identically.
- the curvature of the upper plastic guide block is always curved outward.
- the term "outwards" in the sense of the invention means that the curvature faces an outside observer of the upper curve sequence.
- the plastic guide block comprises a receiving bore for the upper pre-pressure roller.
- the closed pre-pressure curve for the upper punches is preferably located in a solid plastic guide block, which moreover comprises a receiving bore for the upper pre-impression roll.
- This guide block is pushed with its curvature outwards on the upper pre-pressure roller, whereby preferably a connection between the pre-pressure curve and the upper pre-pressure roller is formed.
- the plastic guide block automatically follows this height adjustment.
- the closed pre-pressure curve advantageously follows as part of the upper plastic guide block also an adjustment of the upper pre-pressure roller.
- the closed pre-pressure curve regardless of the position of the upper pressure roller always the preferred safety distance of preferably 0.09 to 0.11 mm, more preferably 0.1 mm to bottom dead center of the upper form rail.
- this safety distance increases by the head height of the upper punch heads, whereby an undesirable contact of upper and lower punches in the die holes of the die plate is prevented.
- the guide block with the integrated pre-pressure rail with the large bore sits directly on the upper pre-pressure roller.
- the height adjustment is preferably carried out automatically and synchronously with the adjustment of the upper form pressure rollers.
- the side surfaces of the plastic guide block are rounded, with the rounded side surfaces engaging in rounded curves of the curve elements adjoining the guide block in the upper curve progression of the at least one prepress station.
- the average person skilled in the art knows how rounded side surfaces of a plastic guide block must be formed and can be made to cooperate with counter-rounding of the adjacent curve elements.
- the plastic guide block advantageously reduces the friction between the rounded side surfaces and the counterroundings, thereby enabling a low-maintenance and low-noise operation of the catching curve provided with as part of the plastic guide block.
- the distance between a bottom dead center of the upper pressure roller and the punch heads of the upper punch has a minimum value of preferably 0.09 to 0.1 1 mm, particularly preferably 0.1 mm ,
- the height-adjustable catching curve of the rotary press with fastening means such as screws, fastened to the connecting piece for connecting the catching curve with the upper pressure roller.
- fastening means such as screws
- a positive and positive fastening of the catching rail curve is advantageously achieved at the connecting piece.
- This non-positive and positive connection advantageously makes it possible for the catching curve to be adjustable in height and also to follow an adjustment of the upper pressure roller synchronously.
- the catching curve is interchangeable if required. This is particularly advantageous when a safety curve has to be replaced due to wear.
- the catch rail according to the invention is interchangeable, in particular, when a distance of preferably greater than 0.09 to 0.1 mm, more preferably 0.1 mm between the punch heads of the upper punch and the bottom dead center of the pressure roller and the The term "present" is used in the sense that such a distance is required to produce the compacts. Due to the interchangeability of the catch a great deal of flexibility for different applications of the rotary press according to the invention is achieved.
- the catching rail according to the invention can be used not only for such rotary presses in which there is a minimum distance between punch heads of the upper punch and bottom dead center of the upper pressure roller, but also for such rotary presses, where the water distance for special applications greater than 0 , 1 mm.
- a rotary press having a plurality of printing stations can be equipped with a plurality of catching curves according to the invention.
- a rotary press having a plurality of printing stations does not necessarily have a catching curve at each printing station when the corresponding curve sequence in the area of individual printing stations makes it unnecessary to use the catching curves.
- the invention can also be used to produce sheath-core compacts.
- two pressing stations as well as an optional core insert module can be provided within the rotary press.
- the second pressing to press station preferably comprises a second pressure roller without adjustable Anpresskurve.
- the upper punch and an upper punch guide can be present as part of the rotor upper part.
- the guide block it is preferred for the guide block to be arranged around the prepressure roller of the prepress station, wherein the guide block preferably comprises a prepressure roller receptacle. It is preferred that the preferably lateral semicircular guides of the guide block are axially movably mounted in the guide counterpart on the left side of the upper punch cam.
- the guide block is mounted with the integrated pressure curve on the first pressure roller, wherein with the adjustment of the upper pressure roller preferably automatically the position of the Anpresskurve is adjustable bar.
- Figure 1 is a view of a preferred embodiment of the upper
- FIG. 2 shows a view of a preferred embodiment of the upper curve expander with rear view of the pre- and main printing station Figure 3 view of a preferred embodiment of the fishing rail
- FIG. 4 shows a front view of a preferred embodiment of the guide block as an individual part with integrated contact pressure curve
- the curve sequence (1) is preferably formed inter alia by Studentsleitschienen (12, 13), the attachment and Aufnah of other stations and their fastening means, such as screws, the NEN.
- the pre-press station comprises a pre-pressure roller (3) which comprises a height adjustment (5), a transfer rail (6) to the main pressure roller (2) and a catch rail (7) with a holder (8) for the catch rail (7). It is preferred that the transfer rail (6) ensures the transition between the admission pressure area and the capture curve (7).
- the cam carrier (1) preferably comprises pre-printing rails, which are preferably formed by a draw-down rail (15) and a transfer rail (6).
- the cam sequence (1) comprises a main printing station with main pressure roller (2), with which the actual production of the tablet takes place.
- the main pressure roller (2) is preferably fastened with a pressure roller pin (9) to the pressure roller seat of a pressure roller station of the rotary press.
- Below the main pressure roller (2) is preferably a catch rail (7), which is preferably also referred to as a capture curve before.
- the holder (8) comprises a flange bushing (10) with a bore (19).
- the catching rail (7) via the collar bushing (10) and the holder (8) with the pressure roller axis (4) is connected in a simple manner.
- the catch rail (7) is preferably located below the upper main pressure roller (2) preferably in the inner region of the curve sequence (1). behind the outer transfer rail (6) and the (dashed) lift curve (1 1).
- the catching rail (7) is advantageously fastened to the holder (8) with the screws (17.1 and 17.2).
- the catching curve (7) is connected to the axis (4) of the upper pressure roller (2) by means of a connecting piece (8), which in the context of the invention is also referred to as a holder.
- a connecting piece (8) which in the context of the invention is also referred to as a holder.
- the collar bushing (10) protrudes, which in turn is fixed in the end face of the pressure roller bolt (9) in a blind bore.
- the upper main pressure roller (2) can be adjusted manually or automatically in height, which results in different immersion depths for the upper punches (18) within the die bore.
- the catching rail (7) with the axis (4) of the main pressure roller (2), which can preferably be formed by a roller bolt (4) of the main pressure roller (2), is advantageously used in an adjustment of the position of the upper main pressure roller ( 2) automatically and synchronously also changes the height position of the catching rail (7).
- the catch rail (7) is 0.1 mm plus the height of the punch head below the bottom dead center of the upper main pressure roller (2). This advantageously means that the upper punches (18) can never dip deeper than 0.1 mm deeper into the matrix via the set pressure roller position.
- the Studentsleitschienen (6 and 1 1) which are preferably also referred to as outer guide curves, are preferably tuned to the maximum allowable immersion depth of the rotary press. As long as the upper main pressure roller (2) is set to a lower insertion depth than the maximum immersion depth during tablet production, the upper punch heads will not touch the outer safety rails due to the inner catch curve (7). This represents a significant advantage of the invention in terms of reliability of the rotary press.
- the upper punches (18, not shown) are passed under the pressure roller (2), being pushed down by the passage below the pressure roller (2), whereby by cooperation with the Stamp in the die holes the tablets are pressed. It is preferred that the catching curve (7) is arranged below the main pressure roller (3).
- the pre-pressure roller (3) is not equipped with a catching curve (7), since the guide rails in the region below the pre-pressure rails do not permit any greater insertion depths of the upper punches.
- screws (16.1 and 16.2) are shown in FIG. 1 as possible fastening means which cooperate with a dashed line (11) of the main pressure curve (2), which is preferably arranged between capture curve (7) and transfer rail (12). You can also see a connection (14) for a multi-function plug.
- FIG. 2 shows a view of a preferred embodiment of the upper curve run (1) with rear view of the pre-press and main-pressure station. Shown are the form roller (3) and the main pressure roller (2), wherein with regard to the form roller (3) and the height adjustment (5) can be seen. From the front, ie viewed from the outside, on the left side of the prepressing roller (3), the pull-down curve (15) of the pre-pressure roller (3) is arranged, while on the right side viewed from the front, the transfer rail (6) to the catching curve (7). has been arranged.
- catching curve (7) Below the main pressure roller (2) is arranged (not shown in FIG. 2) catching curve (7). It preferably has a holder (8), which is fastened to the fastening means (17.1 and 17.2), for example screws, on the upper curve (1). In an opening in the upper, preferably rounded region of the holder (8) of the catching rail (7) there is preferably a flange bushing (10) with a bore (19). It is particularly preferred if the transfer rail (6) and the elevator curve (11) have rear recesses which advantageously ensure a radial guidance of the holder (8) of the arrester rail (7).
- FIG. 3 shows a view of a preferred embodiment of the arresting rail (7). This is advantageously fastened to the holder (8) by means of the screws (17.1 and 17.2) which, viewed from the outside, is located behind the main pressure roller (2) and has an opening in an upper region for receiving a flange bushing (10).
- the pre-printing station is preferably arranged with pre-pressure roller (3), which preferably has no catching rail (7).
- the prepressing roller (3) is preferably designed to be height-adjustable by means of a height adjustment (5).
- the reference numeral 4 designates the axis of the main pressure roller (2).
- Figure 4 shows a front view of a preferred embodiment of the guide block (20) as a single part with integrated contact curve (22, 23, 24) and a receiving bore (21) for the upper pressure roller (28, not shown).
- the integrated contact pressure curve is formed by a pressure rail in the area “pull-down” (22), a contact pressure rail in the area “catching rail” (23) and a contact rail in the area “lift” (24), the contact pressure rail in the area "pull-down”.
- (22) forms a left-hand area of the integrated pressure curve viewed from the outside, the contact pressure rail in the area “elevator” (24) a right area of the integrated pressure curve and the pressure rail in the area "catching rail” (23) a middle area the integrated pressure curve.
- the contact pressure rail in the area of "catching rail” (23) is located lower or lower in comparison to the contact pressure rails in the area “pull-down” (22) and the contact pressure rails in the area “lift” (24), which results from the low - Train and the elevator function of the corresponding rails (22 and 24) results.
- the guide block (20) comprises the integrated contact rail (22, 23, 24) and this is integrated in the guide block (20). It is further preferred that the integrated pressure bar (22, 23, 24) is referred to in the context of the invention as a closed pre-pressure curve.
- the receiving bore (21) is preferably also referred to as receiving the pre-pressure roller (3) or as Vordruckrollenfact.
- the adjustable contact pressure rail (22, 23, 24) with the guide block (20) is mounted inside the rotary press and is located on the upper pre-pressure roller (28) of the first press station.
- the first press station it can be For example, preferably act around a Tampingstation.
- the lateral semicircular guides (25), which are preferably designed as circular guides, are preferably viewed from the outside on the right and left side of an upper region of the illustrated preferred embodiment of the guide block (20).
- FIG. 5 shows a possible installation situation of a preferred embodiment of the guide block (20) in a rotary press. Depicted is the arrangement of the guide block (20) in relation to the upper pre-press station (28) and the pressure roller pin (9).
- the guide block (20) preferably has a round guide (25). Also shown are upper punches (32) and their guide heads, which cooperate with the pressure rollers such that the upper punches (32) are pushed down under the pressure rollers to pass the tablets in cooperation with the lower punches in the die bores to shape or to make a form.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020560548A JP2021511968A (ja) | 2018-01-25 | 2019-01-08 | ロータリープレスの制止レール |
KR1020207023987A KR102547035B1 (ko) | 2018-01-25 | 2019-01-08 | 회전 프레스용 어레스터 레일 |
US16/964,768 US11919268B2 (en) | 2018-01-25 | 2019-01-08 | Safety rail for a rotary press |
CN201980010051.3A CN111655469B (zh) | 2018-01-25 | 2019-01-08 | 旋转压力机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18153460.3 | 2018-01-25 | ||
EP18153460.3A EP3517288B1 (de) | 2018-01-25 | 2018-01-25 | Fangschiene für eine rundlaufpresse |
Publications (1)
Publication Number | Publication Date |
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WO2019145138A1 true WO2019145138A1 (de) | 2019-08-01 |
Family
ID=61027569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2019/050289 WO2019145138A1 (de) | 2018-01-25 | 2019-01-08 | Fangschiene für eine rundlaufpresse |
Country Status (7)
Country | Link |
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US (1) | US11919268B2 (de) |
EP (1) | EP3517288B1 (de) |
JP (1) | JP2021511968A (de) |
KR (1) | KR102547035B1 (de) |
CN (1) | CN111655469B (de) |
ES (1) | ES2945984T3 (de) |
WO (1) | WO2019145138A1 (de) |
Families Citing this family (1)
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DE202023101264U1 (de) * | 2023-03-15 | 2024-06-21 | Romaco Kilian Gmbh | Rundläufer-Tablettenpresse und Druckschiene als Kurvenabschnitt einer Steuerkurve für die Stempel eines Rotors der Rundläufer-Tablettenpresse |
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2019
- 2019-01-08 KR KR1020207023987A patent/KR102547035B1/ko active IP Right Grant
- 2019-01-08 US US16/964,768 patent/US11919268B2/en active Active
- 2019-01-08 CN CN201980010051.3A patent/CN111655469B/zh active Active
- 2019-01-08 WO PCT/EP2019/050289 patent/WO2019145138A1/de active Application Filing
- 2019-01-08 JP JP2020560548A patent/JP2021511968A/ja active Pending
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Also Published As
Publication number | Publication date |
---|---|
US11919268B2 (en) | 2024-03-05 |
EP3517288B1 (de) | 2023-04-12 |
ES2945984T3 (es) | 2023-07-11 |
US20210053309A1 (en) | 2021-02-25 |
CN111655469B (zh) | 2022-06-07 |
JP2021511968A (ja) | 2021-05-13 |
KR20200108471A (ko) | 2020-09-18 |
CN111655469A (zh) | 2020-09-11 |
KR102547035B1 (ko) | 2023-06-26 |
EP3517288A1 (de) | 2019-07-31 |
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