EP1412071A1 - Dispositif pour l'expression de matieres coulantes et procede pour la production d'un tel dispositif - Google Patents

Dispositif pour l'expression de matieres coulantes et procede pour la production d'un tel dispositif

Info

Publication number
EP1412071A1
EP1412071A1 EP02791442A EP02791442A EP1412071A1 EP 1412071 A1 EP1412071 A1 EP 1412071A1 EP 02791442 A EP02791442 A EP 02791442A EP 02791442 A EP02791442 A EP 02791442A EP 1412071 A1 EP1412071 A1 EP 1412071A1
Authority
EP
European Patent Office
Prior art keywords
drum
openings
groove
annular groove
section
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.)
Withdrawn
Application number
EP02791442A
Other languages
German (de)
English (en)
Inventor
Filipp Peck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Santrade Ltd
Original Assignee
Santrade Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Santrade Ltd filed Critical Santrade Ltd
Publication of EP1412071A1 publication Critical patent/EP1412071A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/26—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/02—Apparatus specially adapted for manufacture or treatment of sweetmeats or confectionery; Accessories therefor
    • A23G3/0205—Manufacture or treatment of liquids, pastes, creams, granules, shred or powder
    • A23G3/021—Weighing, portioning apparatus
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/02—Apparatus specially adapted for manufacture or treatment of sweetmeats or confectionery; Accessories therefor
    • A23G3/0236—Shaping of liquid, paste, powder; Manufacture of moulded articles, e.g. modelling, moulding, calendering
    • A23G3/0252—Apparatus in which the material is shaped at least partially in a mould, in the hollows of a surface, a drum, an endless band, or by a drop-by-drop casting or dispensing of the material on a surface, e.g. injection moulding, transfer moulding
    • A23G3/0257—Apparatus for laying down material in moulds or drop-by-drop on a surface, optionally with the associated heating, cooling, portioning, cutting cast-tail, anti-drip device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state

Definitions

  • the invention relates to a device for pressing out flowable masses which are fed to the interior of a rotatable cylindrical drum in the lower region thereof and from there, preferably in the form of drops, via a plurality of radially running openings which come to coincide with the feed region. emerge and solidify on a belt running under the drum.
  • the invention also relates to a method for producing such a device.
  • a device of this type is known from EP 0 145 839 A2.
  • rotoformers in which the material to be pressed is dispensed on the underside of a rotating, perforated drum, the processing of certain viscous materials cannot prevent the material being pressed out of the openings does not completely detach in droplet form, so that a certain remainder of the material remains on the drum surface and is then pushed back into the openings in the course of the 360 ° rotation by so-called referrers, which are heated, before it drops again in the exit area is processed.
  • the present invention is based on the object of designing a device of the type mentioned at the outset in such a way that from the outset it is avoided as far as possible that masses which have not dripped remain, so that cleaning of the drum jacket surface can be largely dispensed with.
  • the cylindrical circumferential surface necessary for scraping off or for arranging a guide should be retained as the peripheral surface of the drum.
  • each of the plurality of openings, which open into the cylindrical peripheral surface of the drum shell is surrounded by a groove-like recess, the wall of which forms a peripheral tear-off edge with the opening in the opening surface.
  • This configuration creates a tear-off edge at each mouth of each opening, which ensures that the pressed material is almost completely detached from the rotating drum, so that almost no residue remains on the drum shell. Any small amounts still adhering to the drum are fed back into the recess by the previously mentioned guide and from there along the groove wall that faces the opening to the outlet opening again and can be dispensed with the pressed material.
  • Such a device ensures a relatively simple and thorough cleaning of the drum outer surface and ensures an improved draining process.
  • the tear-off edge can be designed as a pointed and sharp tear-off edge, the angle of the walls of the tear-off edge, i.e. the cylindrical inner wall of the outlet opening and the wall of the groove-like recess inclined towards it, being an angle smaller or equal Form 75 °.
  • the openings themselves can be circular, so that the recess is designed in a simple manner as an annular groove.
  • the cross section of the annular groove can be triangular in shape with the base line aligned with the lateral surface of the drum and with an inwardly directed third corner.
  • the triangle forming the cross section can be an isosceles triangle, and it is possible that the cross section of the annular groove is rounded off at the deepest point.
  • such a device for pressing out flowable masses which is usually referred to as a so-called rotoforming device
  • a rotoforming device can be produced with the aid of a rotating milling tool, the end face contour of which corresponds to the shape of the groove and which is provided with a central pin, which is inserted into the radial openings of the perforated drum.
  • the tool provided for drilling the openings of the perforated drum is also designed as a milling cutter for making the annular groove around the opening.
  • FIG. 1 is a partially cutaway front view of a new device for squeezing flowable masses in the form of a so-called rotoformer
  • FIG. 2 shows the schematic and enlarged representation of the section through the rotoformer according to FIG. 1 along the line II-II, the parts lying behind the cutting plane not being shown for reasons of clarity,
  • FIG. 3 shows an enlarged illustration of a longitudinal section through the wall of the rotatable drum according to FIG. 2, in which the cross-sectional shape of the outlet openings and the groove surrounding their mouth can be seen
  • 4 is a schematic plan view of three of the openings of the drum as shown in FIG. 3,
  • FIG. 5 is a partial perspective view of the peripheral surface of the rotatable drum of FIGS. 1 and 2.
  • FIGS. 3 to 5 shows a schematic representation of a tool for producing the annular grooves shown in FIGS. 3 to 5 around the outlet openings
  • FIG. 7 is a tool similar to FIG. 6, but with a different configuration
  • Fig. 8 a modified compared to Fig. 3 shape of the annular groove around an outlet
  • Fig. 9 shows another variant of an annular groove.
  • a so-called Rotoformer is shown schematically, the effective part, which is used for squeezing and portioning flowable masses, consists of an outer cylindrical drum 1, which is provided with openings 2 on the entire circumference, and an inner container 3, in which, as can be seen in detail from FIG. 2, the mass to be dripped is fed axially from the outside in the direction of arrow 4. This mass is then passed through the openings in a region facing a cooling belt 5 passed under the outer drum-like tube 1 2 pressed out and, as will be described with reference to FIG. 2, deposited in the form of drops on the belt 5, which then solidify either by cooling or in some other way.
  • the material under a certain pressure in this chamber 26, which is part of a pressure bar 25, is pressed out through the openings and taken away by the belt 5 in the manner previously described.
  • the stationary inner body 3 of the rotoformer is provided with heating channels 21, which help to ensure that the material to be pressed is properly tempered in order to achieve the appropriate viscosity and the corresponding fluidity for the draining process.
  • the pressure bar 25 lies with lateral projections 28 on a shoulder 28 of the inner body 3, so that it is held in a defined position relative to the rotating outer tube 1.
  • the outer drum 1 is provided at both ends in a rotationally fixed manner with flanges 6, 6 ', the flange 6 being connected to a driven part 8 by means of a support 7, which is not shown in more detail, via an adjusting wedge 8' or the like is in turn connected to a gear 9.
  • the flange 6 ' is arranged in a bearing part 10, which is held in fixed support plates 11 or 12, in the same way as the drive part 8.
  • the rotating drum 1 receives a defined and aligned position above the Band 5, which is moved in Fig. 1 in a plane perpendicular to the plane of the drawing.
  • the distance between the drum 1 and the belt 5, which is designed here as a cooling belt, can be adjusted with the aid of a hand lever 13, with which the inner container can be adjusted relative to the base plate 11, a scale 14, which is arranged on the plate 11, being used for adjustment ,
  • the inside of the container 3 is like previously indicated, the substance to be squeezed out, but also a heating medium supplied axially, specifically via the channel 15. On the other hand, this heating medium can be removed again in a manner not shown.
  • the outer drum 1 can be pulled off axially from the inner container 3, this can be done after the bolts 17 or 18 have been loosened and the pulling takes place in the direction of the axis 19, for example to use a different drum.
  • the openings 2 are each designed as cylindrical bores through the jacket in the drum 1, which run radially to the drum axis.
  • the mouth 2a of each opening 2 is surrounded by a circumferential annular groove 31 which, in the exemplary embodiment shown, has a triangular cross section, the base of the isosceles and right-angled triangle being a groove wall 32 which runs obliquely towards the mouth 2a and which corresponds to the cylindrical wall of FIG Opening 2 at the mouth 2a forms a pointed edge 33, which acts as a tear-off edge when the material to be pressed is pressed outward through the opening 2 to its mouth 2a. It can be seen that the tear-off edges 33 directed upwards and towards the viewer in FIGS.
  • the tear-off edges 33 which are therefore directed downward for the dripping process, therefore prevent material from sticking to the edge during the dripping process according to FIG. 2 and then reaching the cylindrical surface 34 and contaminating it. Should partial material adhere to the tear-off edge 33, it is taken up by the groove 31 during the rotation of the drum 1, can also be pushed back into these grooves by a known guide or a spatula and then when the groove is reached Feeding area in the area of the chamber 26 is brought up again on the wall 32 and dripped with the extruded material.
  • the new embodiment has the advantage that the outer circumference of the drum 1 remains cylindrical and the orifices 2a do not protrude beyond this cylindrical outer surface, but are at least slightly radially within this surface, if this is due to the manufacturing process which will be described later is so conditioned.
  • the outer surface of the drum therefore remains largely smooth, and it is possible to work with known heated guides which keep the drum surface clean during operation.
  • FIG. 6 now shows one possibility of producing drums 1, as shown in FIGS. 3 to 5.
  • FIG. 6 shows a milling tool 35 which has a central pin 36 and on the end face facing the pin 36 has a contour which forms the negative for the grooves 31.
  • the circumferential projection 37 therefore has an inner wall 38 on the side facing the pin 36, which is inclined at an angle ⁇ to the axis of the tool.
  • This surface 38 forms, when the pin 36 is inserted into the openings 2 according to FIG. 3 and the milling tool 35 is set in rotation, the groove wall 32 during machining, while the outer wall of the tool 35 forms the radial groove wall.
  • FIG. 7 shows a modified tool 39, which is also provided with the central pin 36, but with a projection 40, the contour of which deviates from that of the groove 31.
  • a groove can also be formed which corresponds to the cross section of an isosceles right-angled triangle.
  • the right angle is at the bottom of the groove and not at the top, as is the case in FIG. 3.
  • FIG. 8 makes it clear that the projection 40 could also be designed in such a way that a groove 41 is formed which has walls 42 and 43 which are inclined at different angles ⁇ 1 and ⁇ to the central axis of the bore in the opening 2. The transition between the walls 42 and 43 is rounded.
  • a groove 41 can also be produced with a tool, similar to FIG. 7, in which case, however, the circumferential projection 40 must correspond to the negative contour of the groove 41.
  • Fig. 9 shows a further variant, which is also possible.
  • a groove 44 is provided which surrounds the mouth of the opening 2 and has an approximately semicircular cross section, the cross section also being able to correspond to only one segment of a circle.
  • the groove 44 which can also apply to the grooves 31 and 41, is provided with a depth b which can be selected to be approximately the same size as the remaining material thickness a of the drum 1, but of course can also achieve other conditions. It is crucial in all embodiments that the mouth 2a of each opening 2 does not protrude outward beyond the peripheral surface 34 of the drum 1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

L'invention concerne un dispositif de formage par centrifugation permettant d'exprimer des matières coulantes à travers des orifices (2) d'un tambour perforé (1). Les orifices coïncident avec un dispositif d'amenée (26) dans une zone inférieure orientée vers une bande de transport se déplaçant en dessous et les matières coulantes sortent vers le bas sous forme de gouttes uniquement dans cette zone. Selon l'invention, chacun des orifices individuels répartis sur toute la périphérie du tambour est entouré d'un évidement (31) en forme de rainure dont la paroi forme une arête de rupture circulaire (33) avec l'embouchure (2a) de l'orifice (2).
EP02791442A 2001-07-27 2002-07-04 Dispositif pour l'expression de matieres coulantes et procede pour la production d'un tel dispositif Withdrawn EP1412071A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10138334A DE10138334A1 (de) 2001-07-27 2001-07-27 Vorrichtung zum Auspressen fließfähiger Massen und Verfahren zur Herstellung einer solchen Vorrichtung
DE10138334 2001-07-27
PCT/EP2002/007400 WO2003011447A1 (fr) 2001-07-27 2002-07-04 Dispositif pour l'expression de matieres coulantes et procede pour la production d'un tel dispositif

Publications (1)

Publication Number Publication Date
EP1412071A1 true EP1412071A1 (fr) 2004-04-28

Family

ID=7694409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02791442A Withdrawn EP1412071A1 (fr) 2001-07-27 2002-07-04 Dispositif pour l'expression de matieres coulantes et procede pour la production d'un tel dispositif

Country Status (6)

Country Link
US (1) US20040265412A1 (fr)
EP (1) EP1412071A1 (fr)
CA (1) CA2455496A1 (fr)
DE (1) DE10138334A1 (fr)
RU (1) RU2004105859A (fr)
WO (1) WO2003011447A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1393113B1 (it) * 2009-03-02 2012-04-11 Sbs Steel Belt Systems S R L Tamburo dosatore per macchine pastigliatrici
DE102015212353B3 (de) * 2015-07-01 2016-07-07 Sandvik Materials Technology Deutschland Gmbh Vorrichtung und Verfahren zum Vertropfen eines fließfähigen Produkts
CN110090592A (zh) * 2018-01-30 2019-08-06 徐州市禾协肥业有限公司 一种挤压料浆形成液滴的装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE509641A (fr) * 1951-03-01
DE1710621C3 (de) * 1968-03-02 1981-07-16 Enka Ag, 5600 Wuppertal Spinndüse, insbesondere zum Schmelzspinnen
AT304753B (de) * 1968-03-02 1973-01-25 Glanzstoff Ag Spinndüsenplatte
CA1220910A (fr) * 1983-11-02 1987-04-28 Reinhard Froeschke Dispositif extrudeur de substances fluables
DE3819558A1 (de) * 1988-06-08 1989-12-14 Dieter Prof Dr Ing Wuestenberg Verfahren und vorrichtung zum pastillieren von schmelzfluessigen materialien
GB8907890D0 (en) * 1989-04-07 1989-05-24 Sandvik Ltd Cutters
US5286181A (en) * 1991-04-26 1994-02-15 Berndorf Belt Systems, Inc. Extrusion apparatus having a nozzle-headed drum
DE19841579C2 (de) * 1998-09-11 2000-07-27 Bosch Gmbh Robert Werkzeug zur spanenden Bearbeitung mit geometrisch bestimmten Schneiden

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03011447A1 *

Also Published As

Publication number Publication date
RU2004105859A (ru) 2005-07-10
CA2455496A1 (fr) 2003-02-13
DE10138334A1 (de) 2003-02-20
WO2003011447A1 (fr) 2003-02-13
US20040265412A1 (en) 2004-12-30

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