EP2081759A1 - Hochleistungs-rotationsumlauf-form-verfahren und -vorrichtung - Google Patents
Hochleistungs-rotationsumlauf-form-verfahren und -vorrichtungInfo
- Publication number
- EP2081759A1 EP2081759A1 EP07822833A EP07822833A EP2081759A1 EP 2081759 A1 EP2081759 A1 EP 2081759A1 EP 07822833 A EP07822833 A EP 07822833A EP 07822833 A EP07822833 A EP 07822833A EP 2081759 A1 EP2081759 A1 EP 2081759A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- displacement
- grid
- bulkhead
- die
- tool
- 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.)
- Granted
Links
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
- B30B11/14—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 on a movable carrier other than a turntable or a rotating drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0082—Dust eliminating means; Mould or press ram cleaning means
-
- 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
-
- 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
- B30B15/306—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 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
- B30B15/34—Heating or cooling presses or parts thereof
Definitions
- the present invention relates to an apparatus for forming moldings from a moldable mass.
- the device comprises a die grid, in which at least one receiving space formed by side boundaries is formed, and at least one tool with which the moldable mass can be pressed in the receiving space.
- the invention relates to a method for forming moldings, in which a moldable mass is formed. The moldable mass is fed to a die grid and portioned in a receiving space. After portioning, at least one tool presses the portions of the mouldable mass in the receiving space to the moldings.
- rotary tabletting machines e.g. the mass to be formed, which is present as bulk material, fed via a fixed filling device in a likewise fixed die table, in the receiving spaces (matrices), the bulk material is filled.
- the receiving space stamp Above and below the receiving space stamp are arranged, which are guided for pressing the bulk material over an upper and a lower pressure roller. By the pressure rollers, the stamp are moved towards each other, whereby initially a rising and after exceeding the vertex, a falling pressure is exerted on the bulk material, whereby it is compressed into a tablet.
- a conventional rotary tabletting machine is described for example in DE 37 14 031 A1.
- a disadvantage of known tabletting machines is that the time interval during which the pressure required for pressing is exerted on the moldable mass is limited. For many applications, it is desirable to extend the so-called pressure hold time. This is possible with conventional tableting machines only with a small time window.
- a process for the production of pharmaceutical tablets is known in which the pharmaceutical mixture is extruded and the still plastic material is processed in a conventional tableting machine into solid pharmaceutical forms. While advantageously an extruder can be used to form and supply the moldable mass in this process, the disadvantages associated with conventional tabletting machines can not be overcome. In addition, an economic mass feed would not be sufficiently possible.
- EP 240 906 B1 to extrude polymer melts and to deform them by spheroidal casting or calendering.
- a disadvantage of the injection molding is that it is not fully continuous, but works with repetitive cycles in the cycle, which can not be accelerated in the required for large-scale production measure because of the required cooling times.
- temperature and pressure change internal structures of the masses and thus the properties also disadvantageous. Even when calendering with two rolls, the production speed is limited because the rollers touch only along a line, so that the cooling time is sufficient only for slow-running rollers to cool the hot, still plastic strand so far that the resulting moldings are dimensionally stable.
- this production method has the disadvantage that no specific mass adjustments can be made without bringing the individual doses lent out of the form borrowed because of this lack of lateral all-round guides. Furthermore, it is necessary to post-process the resulting moldings, in particular to smooth and deburr. Furthermore, mass corrections to the formations are only very limited possible, thereby conditionally a format change is excluded to heavier or lighter forms.
- the proportion of the supplied mouldable mass that is not formed into a molding should be as low as possible.
- the device according to the invention is characterized by a displacement bulkhead to be moved onto the matrix grid for portioning the moldable mass, wherein the displacement barrier comprises side boundaries which correspond to the lateral boundaries of the matrix grid.
- the moldable mass is pre-portioned by the displacement partition, wherein in addition the material overhangs on the matrix grid are largely completely displaced into the receiving spaces of the matrix grid and the Matrices grid then forms a completely enclosed space around the individual masses, which can then be pressed with correspondingly adjustable volumes by pressing down in the matrix grid tools.
- moldings can be produced which have no edge burrs and no offset, so that no further post-processing is required.
- smooth surface structures and complicated geometries of the moldings can be realized.
- the side boundaries of the displacement bulkhead are aligned with the lateral boundaries of the matrix grid.
- the thickness of the lateral boundaries of the matrix grid corresponds in particular to the thickness of the lateral boundaries of the displacement partition.
- the side boundaries of the displacement bulkhead and the lateral boundaries of the matrix grid have end faces which at least partially come to rest when the displacement bulkhead and the matrix grid are moved towards each other completely.
- the respective end faces have in particular the same geometry.
- the matrix grid may comprise a square, rectangular, diamond-shaped or circular grid. The same grid is then formed by the side delimitations of the displacement bulkhead, so that the end faces in each case match one another.
- the transition from the end faces to the side boundaries of the die grid and / or the displacement partition is rounded off or bevelled.
- the tool is guided from the side boundaries of the displacement bulkhead into the receiving space. bar.
- the displacement bulkhead can thus fulfill a dual function. On the one hand, it serves to portion the moldable mass. On the other hand, it serves as a guide for the tool.
- a further die-side tool for the at least one receiving space can be guided from the opposite side of the displacement-side tool into the receiving space. In this way, the moldable mass can be pressed in this receiving space from two sides.
- the die grid in particular a plurality of receiving spaces is formed, each associated with a displacement-side tool and a die-side tool.
- the displacement bulkhead-side tools and / or the die-side tools can be mounted in a respective tool carrier. They are particularly secured floating in the tool carrier.
- the tools can be cooled and / or heated in particular for certain moldable masses.
- the displacement bulkhead is coupled to the tool carrier for the displacement bulkhead-side tools.
- the displacement bulkhead is in particular movable relative to the tool carrier against the force of at least one spring.
- At least one tool carrier is movable along a guideway having a forming section in which a constant pressure is exerted by the tools on the portions of the mouldable mass located in the receiving spaces over a distance.
- the shaping section of the guideway runs in particular in a straight line.
- the tool carrier is held in particular via a slotted guide in the guideway. Furthermore, a separate guide track may be provided for the tool carrier of the displacement-side tool and the tool carrier for the die-side tools.
- At least one tool carrier runs along the guide path at least in sections onto guide rollers, whereby the guide rollers can be adjusted with regard to their distance from the tool carrier of the displacement-side tools, at least in the shaping section of the guide track.
- a molding pressure can be set in accordance with the mass properties to be formed.
- the volumes to be set of the different masses to be pressed are adjusted by means of the height-adjustable die grid.
- a cooling section of the guideway in which cool the pressed moldings in the die grid.
- a sample removal station can be arranged for removal of one or more molds, which can be fed to a quality control.
- a sampling and camera inspection station can be used for sampling and
- a cleaning station for at least the tools, the displacement barrier and the matrix grid, and finally a shaping space coating device can be arranged, in which the parts of the device which come into contact with the moldable material are coated to avoid adhesions.
- the tool cleaning and the molding space coating can thus be carried out continuously during the ongoing production process.
- an online control during the ongoing manufacturing process and an online mass correction of the moldings are possible.
- an online 100% visual inspection by means of a camera as well as online NIR for various analytical data collections are possible.
- the tool carrier is coupled via a telescopic arm with a rotatable drive unit, so that the tool carrier can be guided over a closed curve.
- the drive unit may be the only driven unit of the device according to the invention.
- a telescopic arm is provided for the tool carrier of the displacement-side tools and the tool carrier of the die-side tools.
- the telescopic arm or the telescopic arms can in particular be mounted so as to be pivotable about an axis tangential with respect to the rotation of the drive unit.
- the length of the telescopic arm is variable.
- the tool carrier is in this case coupled via a Hohzontal ⁇ / ertikalgabelgelenk with the telescopic arm. In this way, the tool carrier can move radially along the guide track to the drive unit or away from the drive unit. On the other hand, the tool carrier can be pivoted upwards and downwards in a horizontal plane of rotation.
- the mouldable mass may in particular be a melt ribbon.
- the device comprises in particular an extruder, wherein the melt ribbon is continuously fed to the die grid.
- a shaping device for smoothing and aligning a melt strand ejected from the extruder to the melt ribbon is arranged between the extruder and the die grid. In this way, the width of the melt ribbon can be shaped to correspond to the width of the die grid. The thickness of the melt ribbon can thereby be adjusted so that the weight of the individual portions of the mass is adjusted.
- the melt ribbon may comprise several layers of different composition.
- the extruder can be designed for two-component or three-component extrusion, with the various components being able to lie in different sequences.
- films and moldings with a product sequence ABA or ABCBA can be formed.
- product sequences may be used for the manufacture of medical products, e.g. used in the manufacture of lingual and sublingual slides / tablets as well as transdermal patches. Such products can be very easily produced on the device according to the invention.
- the mouldable mass may be a bulk material.
- the device according to the invention can in particular compress polymer granules with high restoring force into formations.
- the device according to the invention can be due to the adjustable molding time for the molding process for processing flowable and moldable powdered bulk materials, eg in the pharmaceutical, food, cosmetics and hygiene industries.
- a moldable mass is formed and fed to a die grid so that it rests on the end faces of side boundaries of the die grid.
- a displacement barrier having side boundaries corresponding to the side boundaries of the die grid is then moved towards the die grid, thereby displacing the portion of the moldable mass resting on the side boundaries of the die grid in the direction of a receiving space formed by the die grid between the side boundaries that the mouldable mass is portioned.
- At least one tool then compresses the portions of the moldable mass in the receiving space.
- the moldable material is supplied in particular continuously to the die grid.
- the displacement bulkhead is moved toward the die grid in such a way that the side boundaries of the displacement bulkhead are aligned with the side boundaries of the die grid.
- the displacement partition is moved toward the die grid until the end faces of the side boundaries of the displacement partition abut at least in part on the end faces of the lateral boundaries of the matrix grid.
- the displacement barrier can be moved in particular against the force of at least one spring on the die grid.
- the tool is guided by the side boundaries of the displacement partition into the receiving space. Furthermore, preferably during pressing, a further die-side tool for the at least one receiving space is guided from the opposite side of the displacement-bulkhead-side tool into the receiving space.
- a multiplicity of receiving spaces can be formed in the die grid.
- the moldable mass in each receiving space is inserted Pressure exerted by a displacement bulkhead-side tool and a die-side tool.
- the displacement-bulkhead-side tools and / or the die-side tools are in particular mounted in a respective tool carrier.
- at least one tool carrier is moved along a guideway having a forming section in which a constant pressure is exerted by the tools on the portions of the mouldable mass located in the receiving spaces over a distance.
- the tool carrier is coupled in particular via a telescopic arm with a drive unit. It is moved by means of this drive unit, so that the tool carrier is guided on the guideway via a closed curve.
- a malleable mass is understood to mean any mass which changes its shape under the action of a force.
- a melt strand is formed as a moldable mass which is fed continuously to the matrix grid.
- the melt strand is preferably smoothed and aligned before it is fed to the die grid.
- pulverulent bulk materials can be supplied to the matrix grid as a moldable mass.
- the following application features can be realized: by means of a so-called protective extrusion, sensitive active substances can be shielded; a multilayer extrusion can be used to form a molding or a molding To realize a multi-layer tablet, which has a faster drug release of the outer layer and a delayed drug release of the inner layer, it can be a multicomponent tenwirkstoffabgabe and a cascade drug release realize and different thickness variations of the individual layers can be different release profiles realize.
- multilayer moldings for the food, cosmetics and hygiene industries can thus be produced well.
- FIG. 1 shows schematically the overall structure of the device according to an embodiment of the invention
- FIG. 2 shows a detail of the device shown in FIG. 1, in which the various stations of the device can be seen,
- FIG. 3 shows the travel curve of the upper and lower part of the shaping unit, which can be adjusted in height on both sides, when cornering after the shaping process
- FIG. 4 shows the travel curve of the upper and lower part of the shaping unit, which can be changed on both sides, when cornering for the shaping process
- Fig. 5 shows a side view of the travel curves of the device according to the embodiment of the invention shown in Figs. 3 and 4.
- Fig. 66AA shows the nozzle of an extruder of the device according to the embodiment of the invention, in particular for the manufacture of multilayer moldings / multi-layer tablets,
- FIG. 6B shows a detail view of FIG. 6A, FIG.
- Fig. 7A shows another embodiment of the nozzle of the extruder of the device according to an embodiment of the invention, in particular for the
- FIG. 7B shows a detail view of FIG. 7A, FIG.
- FIG. 10 shows the telescopic arm of the device according to the exemplary embodiment of the invention
- FIG. 11 shows the travel and movement path of the tool carrier lower part in the region of the shaping section of the device according to the exemplary embodiment the invention
- 12 shows a detailed view of the guide pin in the region of the shaping section of the device according to the exemplary embodiment of the invention
- FIG. 13A shows a detail of the guide pin in the slide guide
- FIG. 14A shows a plan view of an example of a tool
- FIGS. 14B and 14C show perspective views of an example of a tool
- FIG. 15A shows a top view of another tool
- FIG. 15B shows a perspective view of this other tool
- FIG. 16A shows a top view of another tool
- FIG. 16B shows a perspective view of the further tool
- FIG. 17 shows a sectional view of the tool in the tool carrier of the device according to the embodiment of the invention.
- Fig. 18 shows a special tool of the device according to the embodiment of the invention
- Fig. 1199 shows a detail of the special tool shown in Fig. 18,
- Fig. 20 shows a sectional view of the upper tool carrier and the associated parts of the device according to the embodiment of the invention
- FIG. 24A shows the interaction of the upper and lower tool carriers in the processing of melts
- FIG. 24B shows the interaction of the upper and the lower tool carriers in the processing of bulk goods
- FIG. 24A shows the interaction of the upper and lower tool carriers in the processing of melts
- FIG. 24B shows the interaction of the upper and the lower tool carriers in the processing of bulk goods
- Figs. 25A and 25B illustrate the effect of a first example of the displacement bulkhead of the apparatus according to the embodiment of Figs.
- FIGs. 26A and 26B illustrate the action of a second example of the displacement bulkhead of the apparatus according to the embodiment of the invention
- FIGS. 27A and 27B illustrate the distribution of forces in the receiving space of the die grid of the apparatus according to the embodiment of the invention
- Fig. 28 shows the blank removal and camera inspection station of the apparatus according to the embodiment of the invention
- Fig. 29 shows the cleaning station of the apparatus according to the embodiment of the invention
- Fig. 30 shows another part of the cleaning station of the apparatus according to the embodiment of the invention
- Fig. 31 shows the molding space coating unit of the apparatus according to the embodiment of the invention.
- the device comprises an extruder 1, with which a moldable mass can be formed. From the nozzle of the extruder 1, the moldable material is transferred into a rotating mechanical system in which the moldings are formed.
- the basic structure of this rotating mechanical system will be explained below.
- a rotatable drive unit 2 is provided, are attached to which radially outwardly extending telescopic arms 5. At the radially outer ends of the telescopic arms 5 forming units 4 are attached.
- a molding unit is composed of an upper part 4A and a lower part
- the drive unit 2 thus comprises, in an upper horizontal plane, the telescopic arms 5A for the upper part 4A of FIG Shaping unit 4 and in a lower horizontal plane, the telescopic arms 5B for the lower part 4B of the forming unit 4.
- the telescopic arms 5 with the forming units 4 are thus moved by the drive unit 2 substantially in an upper and a lower horizontal plane.
- the shaping units 4 are guided on a guideway 3.
- the guide track 3 describes a closed curve with straight sections A and B (FIG. 2) and a semicircular section which is arranged opposite to the sections A and B. So that the shaping units 4 can be guided by a rotation of the drive unit 2 on this guideway 3, the radial length of the telescopic arms 5 is variable.
- the guide track 3 can also change the position of the shaping units 4 in the vertical direction.
- the telescopic arms 5 can perform a vertical pivoting movement, d. H. a pivoting movement about axis, which is parallel to a tangential with respect to the rotational movement of the drive unit 2 axis.
- lateral guides are provided on the drive unit 2 in the axle fastenings of the telescopic arms 5.
- the telescopic arms 5 can thus be moved horizontally by the drive unit 2, wherein they can perform vertical pivoting movements during this movement, the paths being predetermined by the guide track 3.
- a forming section A in which the guide track 3 extends on a straight line.
- the shaping section A is adjoined by a cooling-down section B, which can also run on a straight path.
- the guideway 3 changes its direction in a 90 ° bend and feeds the forming units 4 at the section C to a sampling station 6.
- the guide track 3 describes a semicircle on which the forming units 4 at a section D of a mold removal and camera inspection station 7, the section E of a cleaning station 8 and the section F of a Formungsraumbeschich- processing device 9 is supplied. The individual stations and facilities of these sections will be described later in detail.
- the forming units 4 After the forming units 4 have left the forming space coating device 9, they are guided back to the forming section A via a 90 ° bend. Since the closely juxtaposed forming units 4 in this constellation can not perform a curve movement across its diagonal, deflection trajectories are formed for the guideway, which are explained below with reference to FIGS. 3 to 5:
- FIG. 3 shows an upper guide track 3A for the upper part 4A of the molding unit 4 and a lower guide track 3B for the lower part 4B of the molding unit 4.
- FIG. 4 shows the contraction of the respective parts of the molding unit 4.
- the upper guide track 3A and the lower guide track 3B each again divide into an upper and lower part, on which the two parts of the molding unit 4 are alternately fed.
- the control is carried out via points, which causes the diversion into the respective travel curve.
- Fig. 5 is a side view showing the movement of the upper telescopic arm 5A for the upper part 4A of the forming unit 4 and the lower telescopic arm 5B for the lower part 4B of the forming unit 4.
- an extruder 1 known per se can be used.
- the design of the extruder 1 depends on the mass that is to be processed in the extruder 1.
- the masses to be processed may be intended for use in the pharmaceutical industry, in the food industry, as well as in the cosmetics and hygiene industries.
- a plastic melt is produced, which is ejected as melt strand 11 in extruder die 10.
- the melt strand 11 can be formed from only one melt.
- the extruder 1 may be configured to undergo three component extrusion in five plies of sequence ABCBA.
- the melt strand 11 ejected from the extruder die 10 is fed to a molding station 13, in which counter-rotating rolls 12A and 12B smooth the melt strand 11 into a melt ribbon 14. Furthermore, in the forming station 13, the width of the melt belt 14 can be set exactly. The width of the melt belt 14 depends on the width of the die grid 19, as will be explained later. The width is created by taperedêtsleitbleche. Corresponding side-prone preform prisms 12B assume the task of mass reduction on the sides of the melt ribbon.
- FIGS. 8B to 8D show the interaction of the rollers 12A and 12B of the molding station and the shaping of the melt strand 11 to the melt belt 14 after the material emerges from the nozzle 10.
- the roll and prism movements can depend on the volume and the density the melt can be controlled by software.
- the Ausformstation thus the thickness and the width of the melt strip from which the moldings are formed, adjusted exactly. This setting ensures that the masses of the individual blanks are always the same. Furthermore, the height and thus the mass of the molded article to be formed can be adjusted via the thickness of the melt belt 14. In the forming station, a precompression of the moldable mass takes place, which leads to a higher stability of the melt belt 14. The thickness of the melt belt 14 depends on the consistency of the melt, their density and the desired individual weights of the moldings to be produced therefrom.
- the forming units 4 are guided on the guide track so that the upper part 4A of the forming unit 4 the lower part 4B of the molding unit 4 behind the molding station 13 for the melt of the extruder 1 approximated.
- this forming section A (FIG. 2), they form a unit through which the shaped articles are formed from the melt strip 14.
- the forming unit 4 comprises a tool carrier 15 which is divided into an upper tool carrier 15A and a lower tool carrier 15B.
- the upper tool carrier 15A is fixed to an upper telescopic arm 5A
- the lower tool carrier 15B is fixed to a lower telescopic arm 5B.
- the telescopic arms 5A and 5B are arranged in a vertical plane parallel to each other. As already described with reference to FIGS. 1 and 2, they are moved horizontally, wherein they can perform vertical pivoting movements corresponding to the guide track 3.
- the upper and lower tool carriers 15A and 15B are disposed adjacent to each other as shown in Fig. 9, as in the case of the forming section A, for example, the upper and lower tool carriers 15A and 15B are aligned with each other by guide rods 22. Guided by these guide rods 22, the upper and lower tool carriers 15A and 15B can be further moved toward each other.
- the upper and lower tool carriers 15A and 15B each include a plurality of guide pins 16A and 16B, respectively, which hold and guide the upper tool carrier 15A in two upper guide tracks 3A.
- the two upper guide tracks 3A are arranged at the same level at different radii with respect to the rotational movement of the drive unit 2.
- the lower guide bolts 16B hold and guide the lower tool carrier 15B correspondingly in lower guide tracks 3B.
- three guide pins 16A and 16B are respectively provided for the upper and lower tool carriers 15A and 15B. They hold the two tool carrier parts 15A and 15B in a horizontal position, respectively.
- two guide pins 15A and 15B are respectively disposed on the outer guide track 3A and 3B, and the single guide pins 16A and 16B on the inner track 3A and 3B, respectively, for safe cornering of the tool carrier 15 receive.
- the upper and lower tool carriers 15A and 15B receive the same number of identical tools 17 and 18, respectively.
- a die grid 19 and a displacement barrier 38 are arranged, as will be explained later in detail. Both the die grid 19 and the displacement barrier 38 are guided by means of the guide rods 22.
- the telescopic arm 5 comprises two mutually displaceable parts, so that the length of the telescopic arm is variable. In this way, the radial distance of the tool carrier 15 from the drive unit 2 can be changed.
- a horizontal-A / ertikal-Zweachsengabelgelenk 23 is attached.
- the two-axis fork joint 23 comprises a fixing unit 24, which is fastened to the radially outer end of the telescopic arm 5.
- the horizontal joint 26 of the two-axis fork joint 23 is fastened to the fastening unit 24 via a bolt 25.
- the horizontal joint 26 is pivotable about the axis of the bolt 25 in a first plane.
- this first plane is aligned horizontally.
- the vertical joint 28 of the two-axis fork joint 23 is attached via a further bolt 27.
- the vertical joint 28 is pivotable in a second plane, which is perpendicular to the first plane.
- the vertical joint 28 is pivotable in a vertical plane.
- the upper or lower tool carrier 15A or 15B is fastened to the vertical joint 28.
- the two-axis fork joint 23 thus provides a firm connection between the telescopic arm 5 and the corresponding part of the tool carrier 15.
- the tool carrier 15 can smoothly and smoothly reach all positions in all three spatial axes within the path of the guideway 3. Since the drive unit 2 represents the only motor-driven member of the device according to the invention with regard to the movement of the forming units 4, the telescopic arms 5 ensure that the force of the drive unit 2 is transmitted to the tool carriers 15 connected to them so that they move on the predetermined guide track 3 can.
- the two-axis fork joint 23 and the vertical pivoting of the telescopic arm 5 ensure that each individual movement of the tool carrier 15 can be compensated for transmitting force on the guideway 3.
- the lower guide pins 16B comprise a mushroom head 29 which is held and guided in all sections of the guide track 3 except for the shaping section A (FIG. 2) in a slotted guide 33.
- This slotted guide is shown in FIG. 13.
- the storage and guidance in the forming section A is shown in FIGS. 11 and 12.
- the guide pin 16B leaves the slide guide 33 and is guided and held by a guide roller system.
- the guide roller system comprises closely spaced guide rollers 30 which are rotatable in the direction of the guide track 3B.
- the end face of the mushroom head 29 always rests on two guide rollers 30 in order to ensure smooth running of the lower tool carrier 15B.
- two side guide plates 32 are arranged on both sides of the mushroom head 29 of the guide pin 16B.
- a separately controllable level control 31 is provided, which can move or adjust the height of the guide roller 30.
- the Endverformungs can be regulated.
- the level control 31 can be coupled to a weighing cell unit, which adjoins the camera inspection station 7.
- the weighing cell unit can have a programmable logic controller in order to transmit a controlled variable to the level control 31 in order to determine the immersion depths of the individual control units.
- the mounting and guiding of the upper tool carrier 15A over the upper guide pins 16A in the upper guide tracks 3A essentially corresponds to the guidance and the mounting of the lower tool carrier 15B.
- the mushroom head 29 of the upper guide pin 16A is received by a slotted guide 33 of the upper guide track 3A.
- a slotted guide 33 is also provided in the shaping section A, since it is not necessary to adjust both the lower tool carrier 15B and the upper tool carrier 15A in the vertical direction.
- FIGS. 14 to 19 show the tools 18 which are fastened to the lower tool carrier 15B.
- the tools 17 may be identical or similar to the tools 18 and similarly secured to the upper tool carrier 15A.
- the tools 17 and 18 are formed like a stamp. They have an end face 35, which, as shown in FIGS. 14A to 16A, is selected according to the desired molding surface.
- the tools 17 and 18 are floating in the tool carrier 15A, secured once or twice by means of internal locking bars 34 against falling out. This ensures a very dense arrangement of the tools 17 and 18, respectively.
- the number of securing rods 34 depends on the intended use of the tools 17 and 18 and on their function.
- a special tool 36 is shown. It includes heating or cooling holes 37 into which a fluid may be introduced to heat or cool the tool 36. Referring to Fig. 20, the parts connected to the upper tool carrier 15A will be explained.
- the radially inner side of the upper tool carrier 15A is connected to the telescopic arm 5A via the two-axis fork joint 23, as explained with reference to FIG.
- the upper side of the upper tool carrier 15A is mounted on the upper guide pin 16A in the slotted guide 33 of the upper guide track 3A.
- the tools 17 are mounted on the securing rods 34 in the lower side of the upper tool carrier 15A, as explained with reference to FIGS. 14 to 19.
- the displacement barrier 38 is coupled to the upper tool carrier 15A via the connection mechanism 41.
- the linkage mechanism 41 includes a spring 42 which holds the displacement bulkhead 38 in the rest position of the spring 42 so that the upper surface of the displacement bulkhead 38 is spaced from the lower surface of the upper tool carrier 15A. Against the force of the spring 42, the displacement barrier 38 can be moved vertically in the direction of the upper tool carrier 15A.
- the displacement barrier 38 is shown in detail in FIG. 21. It comprises a grid in which the openings of the grid are delimited by lateral boundaries 39 of the displacement bulkhead 38. In the rectangular grid structure shown in Fig. 21, each opening of the grid is demarcated by four side walls. The underside of the grid of the displacement bulkhead 38 has a grid-like end face 40. Finally, the displacement bulkhead 38 has bores 44 for the guide rods 22 of the tool carrier 15 (FIG. 9).
- the lower tool carrier 15B is coupled to the lower telescopic arm 5B via the two-axis fork joint 23, as explained with reference to FIG.
- the lower side of the lower tool carrier 15B is above the lower guide pins 16B guided and stored on the slide guide 33 and via the guide roller system explained with reference to FIG. 11.
- the tools 18 are mounted on the securing rods 34 in the upper side of the lower tool carrier 15B.
- the matrix grid 19 is coupled via the height-adjustable connection mechanism 46 to the lower tool carrier 15B.
- the matrix grid 19 includes receiving spaces 21, which are delimited from lateral boundaries 20.
- the lower openings of the receiving spaces 21 of the die grid 19 are closed by the tools 18 projecting into the receiving spaces 21. Since the volume of the receiving space 21 determines the volume of the molding to be formed and thus at a certain density and the mass or weight, the mass or the weight of the moldings can be adjusted via the height adjustment of the tools 18.
- FIG. 19 A plan view of the die grid 19 is shown in FIG.
- the rectangular grid structure can be seen, which is formed by the end face 45 of the die grid 19.
- the end faces 35 of the tools 18 can be seen, which protrude into the receiving spaces 21 and which are held over the securing rods 34 in the lower tool carrier 15B.
- bores for the guide rods 22 are provided in the matrix grid.
- the tools 17 move in the displacement bulkhead 38 and the tools 18 are located in the receiving spaces 21 of the die grid 19, the tools 17 are also referred to as displacement bulkhead-side tools and the tools 18 as die-side tools.
- the molding operation takes place on the straight path of the molding section A of the guide track 3 (FIG. 2).
- the upper part 4A of the forming unit 4 that is, the upper tool carrier 15A and the parts connected thereto are vertically moved toward the lower part 4B of the forming unit 4, ie, the lower tool carrier 15B and the parts connected thereto.
- the melt belt 14 formed by the forming station 13 is supplied to the lower part 4B of the molding unit 4.
- the melt belt 14 comes to lie on the upper side of the die grid 19, ie in particular on the end face 45, which is formed by the side delimitations 20 of the die grid 19.
- the melt strip 14 is thus located above the receiving spaces 21 of the die grid 19.
- the distance between the bottom of the displacement partition 38 and the top of the die grid 19 is initially greater than the thickness of the melt strip 14, so that this between the die grid 19 and the displacement barrier 38 can be introduced.
- the upper tool carrier 15A is further lowered with the displacement bulkhead 38 until the lower end face 40 of the displacement bulkhead 38 contacts the upper surface of the melt belt 14.
- the portion 14A of the melt belt 14, which is located between the end face 45 of the die grid 19 and the end face 40 of the displacement bulkhead 38 is now displaced in the direction of the adjacent receiving spaces 21, as shown in FIGS Figs. 25A and 25B and Figs. 26A and 26B, respectively.
- the distance between the displacement bulkhead 38 to the upper tool carrier 15A decreases against the force of the springs 42.
- a tilting of the displacement bulkhead 38 is prevented by the guide rods 22.
- the strength of the springs 42 is designed so that they allow a sinking of the displacement bulkhead 38 in the melt belt 14.
- the advancing upper tool part 15A thereby increases the pressure which the displacement barrier 38 exerts on the melt belt 14, by means of the ever further moving springs 42.
- the melt masses 14A below the end face 40 distribute the displacement of the partition 38 in all directions, ie to displace, the edges of the end face 40 of the displacement 38 are specially shaped.
- a displacement barrier 38 is shown in which the edges of the transition from the end face 40 to the side surfaces of the side boundaries 39 of the displacement bulkhead 38 are rounded.
- FIG. 26B shows a displacement barrier in which these edges are bevelled. This configuration of the edges serves a lossless and economically optimal production process. In this case, all material supernatants are to be forced into the receiving spaces 21 of the die grid 19.
- the displacement bulkhead 38 is moved toward the die grid 19 until the end face 40 of the displacement bulkhead 38 rests on the end face 45 of the die grid 19.
- the geometric shape of the displacement bulkhead 38 corresponds to that of the matrix grid 19.
- the lateral boundary 39 of the displacement bulkhead 38 be aligned with the lateral boundaries 20 of the matrix grid 19 and thus with the lateral boundaries 39 or 20 formed end faces 40 and 45 corresponds.
- These side boundaries 39 and 20 form the identical lattice structure.
- the side boundary 39 of the displacement bulkhead 38 has in particular the same thickness as the side boundary 20 of the die grid 19.
- the side boundaries 39 and 20 are aligned with one another. During the movement of the displacement bulkhead 38 in the direction of the die grid 19, the side boundaries 39 and 20 are aligned exactly parallel to one another.
- the upper tool carrier 15A further lowers with the tools 17, without the vertical position of the displacement bulkhead 38 being able to continue to change since it rests on the die grid 19.
- the tools 17 are thus moved in the openings of the displacement bulkhead 38.
- the side boundaries 39 of the displacement bulkhead 38 serve as a guide for the tools 17.
- the displacement bulkhead 38 thus serves as a guide chamber for itself lowering tools 17 and as pre-chamber for the mass to be deformed.
- Fig. 27A shows the distribution of force in the receiving space 21 during pressing.
- pressure is exerted by the tools 17 and 18 from above and below. From the side of the portions of the side boundaries 20 of the matrix grid 19 are enclosed. Since the same pressure is exerted on the lateral boundaries 20 by two adjacent receiving chambers 21, the forces applied to the lateral boundaries 20 cancel each other out. For this reason, the side boundaries 20 and thus also the side boundaries 39 of the displacement bulkhead 38 can be made very thin, whereby a possible residual portion of the melt belt 14, which is not compressed, can be kept extremely low.
- the pressure exerted by the tools 17 and 18 on the melt portions 14 can be selected depending on the shapes to be formed.
- a special feature of the device according to the invention is that the pressure holding time, i. the time interval at which the maximum pressure is exerted on the mass to be compacted, can be individually adjusted to the mass to be deformed and tuned to this.
- the pressure holding time can be chosen to be very long, in particular in comparison to conventional tableting machines. It will be in the
- the cooling section B connects.
- the upper part 4A of the forming unit 4 with the upper tool carrier 15A is in this Section B is again removed in the vertical direction from the lower part 4B of the forming unit 4 with the lower tool carrier 15B.
- the compressed moldings can cool during the residence time in the cooling section B.
- this cooling section B can be chosen so long that it is ensured that no unwanted internal stresses remain in the formed formations.
- the cooling station B is followed by the sampling station 6 in the section C. In this station 6 can be removed by means of a randomized, memory-controlled, individually controllable vacuum blank removal unit each have a certain number of shapes and transferred to a control device.
- the blanks removed from the population or their free spaces on the lower tool carrier 15B are transmitted to the blank removal and camera inspection station 7 by means of the integrated programmable logic controller in order to avoid false control messages.
- the task of this in-process control station is to control the quality-related operation of the device according to the invention, to confirm it or, if necessary, to regulate the process by means of a programmable logic controller and to intervene accordingly via the level control 31.
- the section C with the sampling station 6 is followed by the section D with the blank removal and camera inspection station 7, which will be explained with reference to FIG. 28.
- the rejected goods 7B are separated from the goods 7A (see Fig. 2).
- the tools 18 are moved completely into the receiving space 21 of the die grid 19, so that the shaped articles 57 formed are pressed out of the die grid 19 and are ready for removal.
- the vacuum blank removal unit 58 is pivoted between the upper tool carrier 15A and the lower tool carrier 15B so that vacuum pick-up tubes of the molding receiving head 59 are located immediately above the molds 57.
- the vacuum molding removal unit 58 has the same number of individually controllable vacuum hoses for receiving the moldings 57 as tools 18 and receiving spaces 21 are provided. The moldings are sucked by the vacuum hoses and lifted from the die grid 19.
- the molding receiving head 59 is swung out of the molding unit 4 by means of the motor 62 and the shaft 61, whereupon the molded articles 57 are deposited on a transparent conveyor belt 63.
- the moldings 57 of a camera inspection unit with an upper camera 64 and a lower camera 65 for examination of the top and bottom and the side edges of the moldings 57 are supplied.
- the entirety of the formed moldings 57 can be optically examined.
- the entire geometric shape of the moldings 57 can be examined.
- the moldings 57 can be examined without contact by means of infrared spectroscopy, in particular NIR spectroscopy. Since the geometrical arrangement of the blanks on the conveyor belt 63 corresponds exactly to that in the die grid 19, conclusions about incorrect production in the die grid 19 can be determined in the event of defective moldings 57. NIR spectroscopy works on the qualitative and quantitative analytical sorting of good production 7A with the aid of chemomethical evaluation methods.
- the individual weights of the moldings 57 can be detected. Deviations from predefined weight tolerances can be detected in this way and used to sort defective moldings. Furthermore, the weighing cell unit can transmit a controlled variable to the level control 31 and / or to the guide rollers, as already explained.
- the section D is followed by the section E with the cleaning station 8, which will be explained with reference to FIGS. 29, 30A and 3OB:
- a brush head receptacle 49 is attached, which has cleaning bristles 48 in the direction of the upper part 4A and the lower part 4B of the molding unit 4.
- the bristle head 47 rotates and cleans on it Remove any parts that have come into contact with the mouldable mass.
- the displacement barrier 38 and the tools 17 as well as the die grid 19 and the tools 18 are cleaned.
- the brush shaft 50 is unscrewed from the molding unit 4.
- a rotating device 51 which may comprise three brush heads 47 and corresponding numbers of brush shafts 50.
- the brushes 50 turned out of the forming unit 4 are then cleaned by means of compressed air 52, which is supplied via the pipe system 53A to the compressed-air nozzles 53B.
- compressed air 52 which is supplied via the pipe system 53A to the compressed-air nozzles 53B.
- the entire cleaning process is fully automatic and is integrated in the guideway 3.
- the cleaning station 8 can work during the continuous operation of the continuously moving forming units 4.
- the cleaning station 8 may be equipped with different brushes, compressed air and suction devices. It is fully mobile in all three coordinate directions and equipped with proximity sensors and replacement units.
- the section E with the cleaning station 8 is followed by the section F with the forming space coating device 9, which will be explained with reference to FIG. 31:
- the molding space coating device 9 comprises a pipe system 54, with which a coating fluid 56 or a coating powder (mold release agent) can be supplied.
- the coating fluid 56 or the coating powder exits at the nozzles 55.
- the number of nozzles 55 corresponds to the number of tools 17 and 18.
- the task of the molding space coating device 9 is to reduce or eliminate possible adhesion tendencies of the different materials to be processed in order to ensure a smooth production process.
- the parts of the device which come into contact with the mass to be processed coated with the coating fluid 56 and the coating powder.
- the choice of coating fluid depends on the mass to be molded and the intended field of use of the moldings 57 to be formed.
- the moldable mass from which the moldings 57 are formed is not formed by extrusion technology. Rather, in this exemplary embodiment, the mouldable mass is a bulk material 14B of arbitrary composition.
- the bulk material 14B is in particular powdery, flowable and moldable. It may be, for example, a powdered granules.
- the device according to the invention can advantageously be used in particular for a bulk material 14B, e.g. be used from the granule technology, which is very poorly deformable, since the pressure holding time can be adjusted in the inventive device to a very long period.
- the displacement bulkhead 38 in the apparatus of the second embodiment could be omitted. Preferably, however, it still serves to guide the tools 17.
- the bulk material 14B is filled directly into the receiving spaces 21 by means known per se, as used in conventional tabletting machines, as shown in FIG. 24B is shown.
- the device may be e.g. to act a powder distribution system for the uniform discharge of flowable, moldable, powdered bulk goods 14B, in which the bulk materials 14B are continuously fed. After filling the receiving spaces 21, the pressing is carried out by the tools 17 and 18 (see Fig. 27B) and the further process steps, as described above.
- the pressure energy generated during the molding process is transferred over a longer period of time to the mass to be formed, ie a high pressure is exerted over a longer period of time on the mass to be formed, thereby resist specific restoring forces of the masses to be deformed.
- the pressure can be maintained even during the Auskühlabitess B by the upper part 4A and the lower part 4B of the forming unit 4 apart only after this Auskühlabites B apart. In this way, masses are held with increased elastic restoring forces until solidification or cooling in the plasticizing position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07822833.5A EP2081759B1 (de) | 2006-11-24 | 2007-11-23 | Hochleistungs-rotationsumlauf-form-verfahren und -vorrichtung |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06024451A EP1925442A1 (de) | 2006-11-24 | 2006-11-24 | Hochleistungs-Rotationsumlauf-Form-Verfahren und -Vorrichtung |
PCT/EP2007/062735 WO2008062055A1 (de) | 2006-11-24 | 2007-11-23 | Hochleistungs-rotationsumlauf-form-verfahren und -vorrichtung |
EP07822833.5A EP2081759B1 (de) | 2006-11-24 | 2007-11-23 | Hochleistungs-rotationsumlauf-form-verfahren und -vorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2081759A1 true EP2081759A1 (de) | 2009-07-29 |
EP2081759B1 EP2081759B1 (de) | 2019-01-02 |
Family
ID=38232109
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06024451A Withdrawn EP1925442A1 (de) | 2006-11-24 | 2006-11-24 | Hochleistungs-Rotationsumlauf-Form-Verfahren und -Vorrichtung |
EP07822833.5A Not-in-force EP2081759B1 (de) | 2006-11-24 | 2007-11-23 | Hochleistungs-rotationsumlauf-form-verfahren und -vorrichtung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06024451A Withdrawn EP1925442A1 (de) | 2006-11-24 | 2006-11-24 | Hochleistungs-Rotationsumlauf-Form-Verfahren und -Vorrichtung |
Country Status (3)
Country | Link |
---|---|
US (1) | US8277212B2 (de) |
EP (2) | EP1925442A1 (de) |
WO (1) | WO2008062055A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1925441A1 (de) | 2006-11-24 | 2008-05-28 | Abbott GmbH & Co. KG | Vorrichtung und Verfahren zum Bilden von Formlingen aus einer formbaren Masse |
Family Cites Families (26)
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FR330819A (fr) | 1903-04-01 | 1903-08-26 | Internat Fuel Company | Machine perfectionnée pour fabriquer des briquettes |
GB321748A (en) | 1928-08-27 | 1929-11-21 | Frederick Cooke | Improvements in the manufacture of tablets or cubes for stock food, and in machines therefor |
GB568223A (en) * | 1943-09-24 | 1945-03-22 | Henry Manners Kerfoot | Improvements in machines for forming tablets or other articles from powdered material by compression |
US2829756A (en) | 1955-10-14 | 1958-04-08 | Gercke Ferdinand | Transfer mechanism for plastic articles |
US3332367A (en) * | 1965-07-15 | 1967-07-25 | Upjohn Co | Apparatus for making tablets |
BE754721A (fr) | 1969-08-12 | 1971-02-11 | Verrieres Appliquees S E V A S | Machine pour le formage de corps creux en matiere plastique |
US4086045A (en) * | 1972-10-25 | 1978-04-25 | Bellaplast Gmbh | Apparatus for the manufacture of thin-walled shaped articles of thermoplastic material |
SU599993A1 (ru) | 1976-10-11 | 1978-03-30 | Ждановский Филиал Специального Проектно-Технологического Бюро Медицинской Промышленности | Роторна машина |
DE2830479A1 (de) * | 1978-07-11 | 1980-01-24 | Schlosser & Co Gmbh | Verfahren und vorrichtung zum fuellen einer form zur herstellung von formlingen aus beton o.dgl. |
US4420300A (en) * | 1980-08-13 | 1983-12-13 | Maryland Cup Corporation | Continuous rotary thermo-forming systems and apparatus of the pressure assist, plug assist and match mold type |
DE3612211A1 (de) | 1986-04-11 | 1987-10-15 | Basf Ag | Kontinuierliches verfahren zum tablettieren |
DE3714031A1 (de) | 1987-04-27 | 1988-11-10 | Fette Wilhelm Gmbh | Rundlauf-tablettiermaschine |
CH671730A5 (de) | 1987-06-25 | 1989-09-29 | Nestle Sa | |
EP0328793B1 (de) * | 1988-01-22 | 1993-05-05 | INTERCOS ITALIA S.p.A. | Maschine zur Herstellung von Verpackungen für kosmetische pulverförmige Produkte und Verpackung |
DE3830353A1 (de) | 1988-09-07 | 1990-03-15 | Basf Ag | Verfahren zur kontinuierlichen herstellung von festen pharmazeutischen formen |
DE3830355A1 (de) | 1988-09-07 | 1990-03-15 | Basf Ag | Verfahren zur herstellung von pharmazeutischen tabletten |
RU2041825C1 (ru) * | 1992-07-13 | 1995-08-20 | Александр Юрьевич Кем | Ротационный автомат для прессования порошков |
US5662849A (en) * | 1993-09-10 | 1997-09-02 | Fulsz Technologies Ltd. | Method and apparatus for forming compression dosage units within the product package |
US5648033A (en) * | 1993-09-10 | 1997-07-15 | Fuisz Technologies Ltd. | Method and apparatus for retaining a formed compression dosage unit within a die cavity |
JP3133899B2 (ja) | 1994-07-07 | 2001-02-13 | 株式会社三共製作所 | 錠剤製造方法およびその装置 |
US6106262A (en) | 1997-12-25 | 2000-08-22 | Metropolitan Computing Corporation | Press simulation apparatus |
DE19855328A1 (de) | 1998-12-01 | 2000-06-08 | Henkel Kgaa | Tablettenpresse |
DE69937584T2 (de) * | 1998-12-28 | 2008-09-18 | Neomax Co., Ltd. | Verfahren und Apparat zum Einführen von Seltenerde-Legierungspuder |
DE10152289B4 (de) | 2001-10-23 | 2006-03-23 | Sollich Kg | Verfahren und Vorrichtung zum Herstellen eines Formkörpers aus gekochter Zuckermasse in einer Form |
GB0207767D0 (en) * | 2002-04-04 | 2002-05-15 | Glaxo Group Ltd | Method and apparatus for making a tablet product |
EP1925441A1 (de) | 2006-11-24 | 2008-05-28 | Abbott GmbH & Co. KG | Vorrichtung und Verfahren zum Bilden von Formlingen aus einer formbaren Masse |
-
2006
- 2006-11-24 EP EP06024451A patent/EP1925442A1/de not_active Withdrawn
-
2007
- 2007-11-23 EP EP07822833.5A patent/EP2081759B1/de not_active Not-in-force
- 2007-11-23 WO PCT/EP2007/062735 patent/WO2008062055A1/de active Application Filing
- 2007-11-23 US US12/514,980 patent/US8277212B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
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See references of WO2008062055A1 * |
Also Published As
Publication number | Publication date |
---|---|
US8277212B2 (en) | 2012-10-02 |
EP1925442A1 (de) | 2008-05-28 |
EP2081759B1 (de) | 2019-01-02 |
US20100072666A1 (en) | 2010-03-25 |
WO2008062055A1 (de) | 2008-05-29 |
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