EP2774751A1 - Matrice plate et procédé de détachement d'un composant de la plaque de pressage d'un corps de matrice - Google Patents

Matrice plate et procédé de détachement d'un composant de la plaque de pressage d'un corps de matrice Download PDF

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Publication number
EP2774751A1
EP2774751A1 EP13157676.1A EP13157676A EP2774751A1 EP 2774751 A1 EP2774751 A1 EP 2774751A1 EP 13157676 A EP13157676 A EP 13157676A EP 2774751 A1 EP2774751 A1 EP 2774751A1
Authority
EP
European Patent Office
Prior art keywords
flat die
component
bolt
bore
die according
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Withdrawn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
EP13157676.1A
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German (de)
English (en)
Inventor
Sven Leier
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.)
Amandus Kahl GmbH and Co KG
Original Assignee
Amandus Kahl GmbH and Co KG
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 Amandus Kahl GmbH and Co KG filed Critical Amandus Kahl GmbH and Co KG
Priority to EP13157676.1A priority Critical patent/EP2774751A1/fr
Publication of EP2774751A1 publication Critical patent/EP2774751A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/221—Extrusion presses; Dies therefor extrusion dies
    • 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
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/228—Extrusion presses; Dies therefor using pressing means, e.g. rollers moving over a perforated die plate

Definitions

  • the invention relates to a flat die for pelleting a pressed material.
  • the flat die comprises a die body which has a support surface facing in the axial direction. Furthermore, the flat die comprises a groove track component which fits on the bearing surface and is provided with a plurality of press channels.
  • the invention also relates to a method for releasing the gullet component from the die body in such a flat die.
  • Such flat dies are used in flat die presses and are used to produce pellets.
  • the starting material to be pelleted is pressed through press channels.
  • the starting material is transported on the flat die on which it forms a carpet of material.
  • the starting material may for example consist of lumpy, fibrous, powdery or pasty substances.
  • About a part of the flat die, the so-called gullwing, and the material carpet lying on it roll off the Koller.
  • the Koller exert pressure on the material and the underlying flat die.
  • the starting material is compressed and forced through the press channels. Due to the constant supply of starting material are cylindrical strands of the starting material shaped, which emerge below the flat die and can be cut to a desired length.
  • the present invention has for its object to present a flat die and an associated method in which the wear-related maintenance costs are reduced.
  • the object is achieved with the features of claim 1.
  • the die body comprises a relation to the support surface projecting enclosure, which is arranged in the radial direction relative to the caterpillar component, when the caterpillar component on the support surface rests.
  • the direction indication axially refers to the axis of the die body parallel to the direction of the press channels. Without this being a limitation with regard to the alignment of the flat die is connected, the area on which run the Koller, hereinafter referred to as the upper side of the flat die.
  • the pebbled track is arranged on a component separate from the die body, it is no longer necessary to replace the entire die after the wear of the pebble track, but only the pebble track component. Since the die body has a skirt arranged radially with respect to the bead track member, it becomes possible to engage the bead track member in the radial direction for connecting the bead track member to the die body. Since no area is required for axial fasteners in the roll web component, the roll web component can be kept compact. This reduces the cost of materials when replacing the roll track component.
  • roller conveyor Since the roller conveyor is subjected to high loads during operation of the pellet press, a stable connection is required between the roller track component and the die body. If the enclosure has a retaining surface arranged outside the roll-track component, the forces occurring can be well absorbed.
  • a stable connection between the bead track component and the die body can be achieved, in particular, by exploiting the thermal expansion of the material.
  • the skirt may be configured to surround the bead track member substantially free of play when both the bead track member and the die body are at about room temperature. Due to the friction of the rollers in the Koller / matrix / product active system, the roller-track component heats up during operation of the pellet press stronger than the die body, so that the rollerboard component pinched by thermal expansion in the enclosure.
  • the enclosure may comprise a retaining surface which cooperates with the peripheral surface of the gullet component.
  • the interaction between the holding surface and the peripheral surface means here that the rollerboard component rests directly on a holding surface of the enclosure. As a result, the bead track component can no longer move in the direction of the holding surface, whereby it is fixed in this direction.
  • the holding surface may have portions that are distributed over the circumference of the roll path component, that the position of the roll path component within the enclosure is clearly defined. It should be noted, of course, that the concerns on opposite portions of the support surfaces can not be realized with any accuracy. In particular, due to changes in the size of the components due to temperature changes, a change in the accuracy of fit of the beaded track component within the opposite sections of the holding surface can occur. In this regard, the well-defined position of the gullet component offers a further advantage. Since large frictional forces act between the hull and the caterpillar component, the caterpillar component heats up more than the die body during the pelleting process. As a result, the bead track component expands more than the die body.
  • the bead track component Due to the retaining surface of the enclosure located radially outside the roll track component, the bead track component is clamped on opposite sections of the support surface and thus fixed better. If the retaining surface of the enclosure over the entire circumference of the gullet component At this rests, the roll-track component is held particularly secure.
  • the die body may for this purpose have a bore which opens into the holding surface of the enclosure.
  • the bore which may be aligned in the radial direction, may have an internal thread.
  • the internal thread may extend from the radially outer end of the bore over part or the entire length of the bore. It may be provided a hole suitable for bolt.
  • the bolt which may be free of external threads, may then be inserted into the bore. By the hole opens into the holding surface of the enclosure, the bolt can be fixed with the inserted caterpillar component by applying pressure to its peripheral surface.
  • the bolt may be provided a suitable for internal thread of the bore screw. This ensures that the bolt remains in a position in which it exerts pressure on the circumferential surface of the bead track.
  • the screw can be designed as a grub screw.
  • the bolt In order to be able to pull the bolt out of the bore, it is expedient for the bolt to comprise on its radially outwardly directed end face an attachment element, via which a tensile force can be exerted.
  • this attachment element comprises a thread.
  • the introduced into the bore bolt can engage in a recess of the caterpillar component.
  • the recess can extend over the entire circumference of the rollerboard component.
  • a particularly stable connection between the bead track component and the die body can be achieved if the bead track component is pressed by the bolt in the axial direction against the die body.
  • the recess of the caterpillar component can be designed such that it has a wedge surface arranged between the pin and the bearing surface of the female body.
  • a wedge surface offers the advantage that it can convert a radially acting force of the bolt into an axially acting compressive force.
  • the bead track component is pressed in the direction of the underlying die body, whereby the connection stability is further increased.
  • the recess may have a second wedge surface, which is arranged above the bolt.
  • the central axis of the bore is offset with respect to the recess downwards, so that the central axis of the bore intersects the lower wedge surface of the recess.
  • the bolt may have a cylindrical base body and a wedge-shaped tip.
  • the lower wedge surface of the bolt may have a larger area than the upper wedge surface of the bolt.
  • the downward wedge surface of the bolt can identify the same angle of inclination as the lower wedge surface of the recess.
  • the bolt can be inserted into the bore so that it presses exclusively on the lower wedge surface of the recess due to the offset relative to the recess downwards axis of the bore. Its larger lower wedge surface can press on the lower wedge surface of the recess. This will be a very big part the clamping force of the bolt translated into a downward compressive force acting in the axial direction.
  • the bolt is made of a material which is softer than the material of the rollerboard component.
  • the bolt may be made of brass, for example. As a result, damage to the roll track component is avoided by the bolt.
  • the enclosure has both a radially inner holding surface and a radially outer holding surface.
  • the second holding surface further increases the stability of the connection, wherein clamping by temperature expansion can also take place with respect to the inner holding surface.
  • the support is further improved when the female body bends elastically under the load of the rollers and the roll of rubber is thereby additionally clamped between the two retaining surfaces.
  • the die body Over the die body, the force exerted by the huller force is transferred to the structure of the pellet press.
  • the die body may be designed so that it has channels extending in extension of the pressing channels of the caterpillar track.
  • the channels of the die body can have a larger diameter than the pressing channels, so that the pellets emerging from the press channels can pass freely.
  • the bead track member may have a have in the axial direction pointing mark, which cooperates with a corresponding counterpart of the die body.
  • the marking may comprise a recess in the bead track component, which is engaged with a bolt from the die body.
  • the die body can for this purpose have a bore provided with an internal thread, which opens into the support surface.
  • Such a bore may also be used to disengage the gullet member from the die body after it has been worn.
  • pressure can be exerted on the bead track component through the bore in the axial direction, so that the bead track component is pressed off the die body. So that the stability in the region of the channels is not impaired, it is advantageous if the bore opens in the radial direction outside or inside the channels.
  • the flat die according to the invention is therefore preferably designed so that only the bead track component and not the die body comes into contact with the hull.
  • the flat die can be designed so that the raceway of the roll path component protrudes in the axial direction relative to the female body. Raceway refers to the area of the caterpillar track on which the Koller runs.
  • the die may further comprise an annular groove surrounding the raceway, wherein preferably both radially inside and radially outside of the raceway an annular groove is provided. This allows more material from the pebble track section be removed before the Koller touch the die body.
  • the inventive gullet component may be made of unalloyed steels, stainless steels (e.g., tool steels), high performance powder metallurgy steels, ceramic masses, plastics, or composites (e.g., hard metals).
  • the invention relates to a pellet press with a plurality of running on a flat matrix muller, wherein the flat die is formed according to the invention.
  • the invention also relates to a method for releasing the gullet component from the die body in such a flat die.
  • the flat die has a threaded bore opening in the support surface.
  • a threaded bolt engages in the threaded hole in order to press the bead track component away from the die body in the axial direction. By turning the bolt this moves upwards and finally engages the roll web component. Another rotation then leads to the pressing out of the roll track component from the die body.
  • FIG. 1 shows a side sectional view of a part of a pellet press.
  • a circular disk-shaped flat die 50 is fixed with its outer periphery to an outer housing 54 and may be additionally secured with its inner periphery to an inner housing 55. Due to the circular disk shape, two rectangular segments of the flat die 50 can be seen in this view.
  • a starting material supplied from above between the outer housing 54 and the inner housing 55 forms a material carpet 52 on the flat die 50, on which the rollers 51 run.
  • the Koller exert a great pressure on the material carpet and the underlying flat die 50, so that the starting material is pressed by pressing channels, not shown here, which are located within the flat die 50.
  • the constantly fed starting material is thus compressed within the pressing channels and emerges strand-like below the flat die 50.
  • the strand-like material can be cut off so that pellets 56 of a desired length are formed. Due to the large pressure exerted by the rollers 51 on the flat die 50, there may be a downward deflection of the sections of the flat die 50, which are located below the roller 51. This deflection is by using the dashed lines in FIG. 1 indicated.
  • FIG. 2 shows a plan view of a circular disk-shaped flat die according to the invention.
  • Concentrically arranged on a circular-disk-shaped die body 1 is a circular-disk-shaped pebble-web component 3.
  • the pebble-joint component 3 adjoins the radially outer part of the casing 5 and the one in the radial direction inside part of the enclosure 5 at.
  • the raceway of the caterpillar component 3 is provided with press channels 30, which point in the plane of the drawing, wherein FIG. 2 the press channels 30 are shown only in a section.
  • a reinforcing ring can be fastened via a multiplicity of bores 22.
  • FIGS. 3 and 4 3 show the rollerboard component 3 and the die body 1 in a lateral sectional view according to FIG FIG. 2 shown line A, A '.
  • the die body 1 comprises a support surface 2 facing upwards in the axial direction. In the region of the support surface 2, the die body 1 is provided with a plurality of channels 23.
  • the support surface 2 is limited in the radial direction outwardly and inwardly from the enclosure 5.
  • the enclosure 5 comprises a retaining surface 6 which points inward in the radial direction and a retaining surface 20 which points outward in the radial direction.
  • the beading component 3 is designed in such a way that it can be placed on the support surface 2.
  • an outer peripheral surface 7 of the bead track component 3 interacts with the support surface 6 of the die body 1.
  • an inner peripheral surface 24 of the roll track component 3 cooperates with the holding surface 20 of the die body 1. This condition is in a side sectional view in FIG FIG. 5 shown, wherein only one half of the flat die is shown in an enlarged view here.
  • the lateral enclosure of the caterpillar component allows a good absorption of the forces occurring during operation. Due to the temperature expansion of the pebble member 3 during operation, and also due to the above-mentioned slight deflection, the pebble member becomes 3 clamped between the support surfaces 6 and 20.
  • the channels 23 of the die body extend in extension of the press channels 30 below the roll track component.
  • a detail view of the channel history is in FIG. 6 to see. Looking at the course of the channel from top to bottom, so the press channels 30 taper within the caterpillar member 3 first and then have a cylindrical shape. In the lower region of the roll-track component 3, the pressing channels 30 widen. In the border region to the female body, the expanded part of the press channels 30 transitions directly into the channels 23 without changing the channel diameter. A pressed from above through the press channels 30 pressed material can thus pass through the channels 23 of the female body substantially without friction. Thus, there is no further compression of the pellet material in the female body, whereby the female body is less stressed and accordingly less heavily worn.
  • the function of the channel structure of the die body is merely to provide the bead track component as good as possible support.
  • the press channels 30 may have a length between 20 mm and 40 mm.
  • a plurality of holes 8 is provided, of which in FIG. 5 one is shown.
  • the bore 8 is directed in the radial direction from the outside inwards and opens into the holding surface 6.
  • the bore 8 also has on its outer side in the radial direction a thread 9 into which a grub screw 11 can be used.
  • a matching bolt 10 is inserted be, which exerts a force on the inserted crawler track member 3 and this fixed. With the help of the grub screw 11, the bolt is secured.
  • the bead track component 3 is provided with a recess 13 around its outer circumference.
  • the recess 13 is located substantially at the level of the bore 8. The bolt 10 thus engages in the recess 13 of the bead track component 3.
  • the recess 13 has a wedge surface 14 arranged between the bolt 10 and the support surface 2, as well as a wedge surface 15 opposite the wedge surface 14.
  • the bore 8 is offset downwards relative to the recess 13 so that the central axis of the bore 8 is the lower wedge surface 14 cuts.
  • the bolt 10 has a cylindrical base body and has two wedge surfaces at its tip. In this case, the lower wedge surface is designed larger than the upper wedge surface. The lower wedge surface also has an angle of inclination which corresponds to that of the wedge surface 14.
  • the pin 10 presses exclusively on the wedge surface 14 and thus exerts a downward force on the beaded track component 3 via its larger lower wedge surface.
  • the downwardly directed contact force increases the connection stability between the bead track component 3 and the die body 1.
  • the bolt 10 further comprises an internal thread 12. About this, a tensile force can be applied, so that the bolt 10 can be pulled out again when the roll track member 3 is worn and needs to be replaced.
  • the die body 1 comprises further bores 16, of which in FIG. 5 two and in FIG. 6 one is shown.
  • the holes 16 are aligned in the axial direction and open into the support surface 2.
  • the holes 16 are located in the radial direction outside or within the channels 23 and have on its lower side an internal thread 25.
  • bolts 18 engage in matching recesses 19 of the caterpillar component 3 a. As shown below FIG. 10 is explained, with the aid of the bores 16, the bolt 18 and the recesses 19, an angular alignment of the bead path can be made relative to the female body.
  • FIG. 10 shows a plan view of the lower side of the gullet component 3.
  • a plurality of recesses 19 can be seen (in Fig. 10 there are four recesses), which are located on the inner or on the outer edge of the roll track component.
  • the recesses 19 are each bounded in the circumferential direction by two support surfaces 21.
  • the inserted into the female body quoll web component is rotated to the angular orientation so that the bolts 16 engage in the recesses 19.
  • the area in which the press channels 30 are arranged is in FIG FIG. 10 indicated by the lines 30 and 31.
  • the recesses 19 are outside this Range, so that the stability in the region of the pressing channels is not affected by the recesses 19.
  • the bores 16 can also be used to push out the roll web component when it is worn.
  • a screw not shown, are rotated into the internal thread 25 of the bores 16 in order to press the bead track component away from the die body.
  • FIGS. 11 and 12 is a detail view of a side section through a flat die with overflowing Koller 51 shown, in FIG. 11 an unused rubber track component 3 and in FIG. 12 a worn caterpillar component 3 can be seen, in which a part of the tread 34 has already been removed by use.
  • the running surface 34 is the part of the caterpillar component 3, over which the rollers 51 run.
  • the roll-track component is provided with an annular groove 33. While the unused rubber sheet member 3 protrudes in the axial direction relative to the female body, the tread is at the worn-out caterpillar member 3 below the skirt 5 of the female body. Due to the annular groove 33 and the associated radial spacing of the tread 34 from the enclosure 5, more material can be removed from the roll track section and the roll web component can be better utilized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
EP13157676.1A 2013-03-04 2013-03-04 Matrice plate et procédé de détachement d'un composant de la plaque de pressage d'un corps de matrice Withdrawn EP2774751A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13157676.1A EP2774751A1 (fr) 2013-03-04 2013-03-04 Matrice plate et procédé de détachement d'un composant de la plaque de pressage d'un corps de matrice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13157676.1A EP2774751A1 (fr) 2013-03-04 2013-03-04 Matrice plate et procédé de détachement d'un composant de la plaque de pressage d'un corps de matrice

Publications (1)

Publication Number Publication Date
EP2774751A1 true EP2774751A1 (fr) 2014-09-10

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EP13157676.1A Withdrawn EP2774751A1 (fr) 2013-03-04 2013-03-04 Matrice plate et procédé de détachement d'un composant de la plaque de pressage d'un corps de matrice

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018000161U1 (de) 2018-01-12 2019-04-15 Amandus Kahl Gmbh & Co. Kg Pelletpresse und Abbrecheinrichtung für eine Pelletpresse

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3223053A1 (de) * 1982-06-21 1983-12-22 Bellefroid, Charly Vincent, Zaragoza Maschine zur agglomeration durch extrusion
DE3342658A1 (de) * 1983-11-25 1985-06-05 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Matrize fuer eine pelletisiermaschine
EP0143414A2 (fr) * 1983-11-25 1985-06-05 Blohm + Voss Ag Machine à agglomérer
JP2000202272A (ja) * 1999-01-12 2000-07-25 Denki Kagaku Kogyo Kk 押出造粒機及び押出造粒方法
EP1922942A1 (fr) 2006-10-25 2008-05-21 Spolek pro ekologické bydleni Obcanské sdruzeni Dispositif de fabrication de nourriture pour animaux et/ou de combustible par tassement de matières végétales
CN201214289Y (zh) * 2008-04-03 2009-04-01 赵理 平模式生物质压块机及其专用环状平模盘
CN201261273Y (zh) * 2008-09-28 2009-06-24 王树森 生物质燃料成型机压盘
DE102009047853A1 (de) * 2009-09-30 2011-03-31 Dieffenbacher Gmbh + Co. Kg Pelletierpresse und Verfahren zum Betreiben einer Pelletierpresse
DE102009047851A1 (de) * 2009-09-30 2011-04-07 Dieffenbacher Gmbh + Co. Kg Pelletierpresse zur Herstellung von Pellets

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3223053A1 (de) * 1982-06-21 1983-12-22 Bellefroid, Charly Vincent, Zaragoza Maschine zur agglomeration durch extrusion
DE3342658A1 (de) * 1983-11-25 1985-06-05 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Matrize fuer eine pelletisiermaschine
EP0143414A2 (fr) * 1983-11-25 1985-06-05 Blohm + Voss Ag Machine à agglomérer
JP2000202272A (ja) * 1999-01-12 2000-07-25 Denki Kagaku Kogyo Kk 押出造粒機及び押出造粒方法
EP1922942A1 (fr) 2006-10-25 2008-05-21 Spolek pro ekologické bydleni Obcanské sdruzeni Dispositif de fabrication de nourriture pour animaux et/ou de combustible par tassement de matières végétales
CN201214289Y (zh) * 2008-04-03 2009-04-01 赵理 平模式生物质压块机及其专用环状平模盘
CN201261273Y (zh) * 2008-09-28 2009-06-24 王树森 生物质燃料成型机压盘
DE102009047853A1 (de) * 2009-09-30 2011-03-31 Dieffenbacher Gmbh + Co. Kg Pelletierpresse und Verfahren zum Betreiben einer Pelletierpresse
DE102009047851A1 (de) * 2009-09-30 2011-04-07 Dieffenbacher Gmbh + Co. Kg Pelletierpresse zur Herstellung von Pellets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018000161U1 (de) 2018-01-12 2019-04-15 Amandus Kahl Gmbh & Co. Kg Pelletpresse und Abbrecheinrichtung für eine Pelletpresse

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