EP0101196A2 - Matrize für Pelletpresse - Google Patents

Matrize für Pelletpresse Download PDF

Info

Publication number
EP0101196A2
EP0101196A2 EP83304141A EP83304141A EP0101196A2 EP 0101196 A2 EP0101196 A2 EP 0101196A2 EP 83304141 A EP83304141 A EP 83304141A EP 83304141 A EP83304141 A EP 83304141A EP 0101196 A2 EP0101196 A2 EP 0101196A2
Authority
EP
European Patent Office
Prior art keywords
die
bore
ridged
internal bore
pellet mill
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
Application number
EP83304141A
Other languages
English (en)
French (fr)
Other versions
EP0101196B1 (de
EP0101196A3 (en
Inventor
Thomas John Rowland
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.)
PELLET TECHNOLOGY (AUSTRALIA) PTY Ltd
Original Assignee
PELLET TECHNOLOGY (AUSTRALIA) PTY Ltd
Ingersoll Rand Australia 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 PELLET TECHNOLOGY (AUSTRALIA) PTY Ltd, Ingersoll Rand Australia Ltd filed Critical PELLET TECHNOLOGY (AUSTRALIA) PTY Ltd
Priority to AT83304141T priority Critical patent/ATE32677T1/de
Publication of EP0101196A2 publication Critical patent/EP0101196A2/de
Publication of EP0101196A3 publication Critical patent/EP0101196A3/en
Application granted granted Critical
Publication of EP0101196B1 publication Critical patent/EP0101196B1/de
Expired legal-status Critical Current

Links

Images

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
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • B30B11/202—Ring constructions

Definitions

  • This invention relates to the extrusion or moldable material into pellets or cubes, and more particularly to an extrusion die for use in such connection.
  • the effective length and diameter of a die hole is a carefully selected balance between capacity and pellet quality and wear and strength of the die. A short effective length usually increases capacity and lowers power consumption, whereas a thicker die promotes solid pellet formation at the expense of power and capacity. A larger effective diameter generally promotes capacity at the expense of pellet quality.
  • pellet mill die construction comprising a die member having a multiplicity of die holes constituting extrusion passages extending between the inner and outer faces thereof, each of the die holes comprising a bore hole having a smooth internal bore extending from the inner face at least part way through the die hole, and a ridged internal bore of equal effective diameter extending from the smooth bore towards the outer face.
  • FIG. 1 the cross-section of a typical pellet mill die is shown and designated by the reference numeral 1.
  • the die has a plurality of die holes 2 which perforate the die from an inner surface 3 to an outer surface 4.
  • Each die hole is comprised of: an inlet coutersink 5, a working section 6, and a controlled relief section 7. Details of each of these sections are shown in in Figs 2 and 3.
  • compression rollers would roll across the inner surface of the die 3 compressing the material to be pelletized through the inlet of each of the die holes.
  • the countersink 5 is provided to facilitate entry of the material and to prevent high stress corners in this heavily loaded area.
  • the compaction and diameter of the pellet is controlled in the working section 6.
  • This is normally a polished section and the die is formed by a combination of friction and beat generated in the walls of the working section.
  • a relief section which has an effective diameter close to that of the working section, but because of its ribbed construction, friction is greatly reduced between the pellet and the relief section wall.
  • material filling the valleys of the ribbed section acts as an insulator to control heat and moisture loss, thus further promoting a durable pellet.
  • the valleys may also be intentionally filled with an antifriction material such as nylon, teflon, or a solid lubricant such as graphite.
  • Fig 2 shows a ribbed portion wherein the ribs are concentrically stacked.
  • Fig 3 shows a threaded ribbed portion.
  • the threads may be any conventional type, such as a square thread or a conventional SAE or Whitworth thread.
  • the ribbed construction may also be formed by an array of small dimples formed in the side wall of the relief section
  • the length of the working section is from 1/4" to 2" and the length of the relief section is from 1/4" to 1-1/2".
  • Table 1 shows comparative results for a standard die and a die according to this invention.
  • the dies were used to pellet hay in a Century 929-25 pellet mill.
  • the die thickness was 2-1/2" and the holes 5/16" diameter.
  • the holes were tapped with a 3/8" Whitworth thread for 1/2" depth from the outer face of the die.
  • sample 5 the thread was tapped in a depth of 1".

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Glanulating (AREA)
EP83304141A 1982-07-19 1983-07-15 Matrize für Pelletpresse Expired EP0101196B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83304141T ATE32677T1 (de) 1982-07-19 1983-07-15 Matrize fuer pelletpresse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU4934/82 1982-07-19
AUPF493482 1982-07-19

Publications (3)

Publication Number Publication Date
EP0101196A2 true EP0101196A2 (de) 1984-02-22
EP0101196A3 EP0101196A3 (en) 1985-06-12
EP0101196B1 EP0101196B1 (de) 1988-03-02

Family

ID=3769640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304141A Expired EP0101196B1 (de) 1982-07-19 1983-07-15 Matrize für Pelletpresse

Country Status (5)

Country Link
EP (1) EP0101196B1 (de)
JP (1) JPS5964316A (de)
AT (1) ATE32677T1 (de)
CA (1) CA1211414A (de)
DE (1) DE3375767D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208188B1 (de) * 1985-06-25 1989-10-11 Mazda Motor Corporation Kraftfahrzeugtür mit Innen- und Aussenschalen aus Kunststoff

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR451305A (fr) * 1912-02-10 1913-04-16 Ladislas Penkala Perfectionnements aux filières extensibles pour presses à filières
US2958900A (en) * 1955-06-23 1960-11-08 Edgar N Meakin Pellet mill die assembly
US3176631A (en) * 1963-01-21 1965-04-06 Cunningham & Sons Pelleting machine having grooved pellet holes
US3391657A (en) * 1961-05-01 1968-07-09 California Pellet Mill Co Wear compensating die
GB1522102A (en) * 1977-02-23 1978-08-23 Washbourne J Production of food stuffs

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5076107U (de) * 1973-11-02 1975-07-02

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR451305A (fr) * 1912-02-10 1913-04-16 Ladislas Penkala Perfectionnements aux filières extensibles pour presses à filières
US2958900A (en) * 1955-06-23 1960-11-08 Edgar N Meakin Pellet mill die assembly
US3391657A (en) * 1961-05-01 1968-07-09 California Pellet Mill Co Wear compensating die
US3176631A (en) * 1963-01-21 1965-04-06 Cunningham & Sons Pelleting machine having grooved pellet holes
GB1522102A (en) * 1977-02-23 1978-08-23 Washbourne J Production of food stuffs

Also Published As

Publication number Publication date
DE3375767D1 (de) 1988-04-07
EP0101196B1 (de) 1988-03-02
EP0101196A3 (en) 1985-06-12
CA1211414A (en) 1986-09-16
JPS5964316A (ja) 1984-04-12
JPH0365243B2 (de) 1991-10-11
ATE32677T1 (de) 1988-03-15

Similar Documents

Publication Publication Date Title
US4253709A (en) Four-way loaded type linear bearing
US4733698A (en) Heat transfer pipe
US5513933A (en) Staked fastener with undercut
US4726455A (en) Clutch facings
DE10135025B4 (de) Brennstoffzellengerät
DE1675076C2 (de) Hydrodynamisches Lager zur Aufnahme axialer und radialer Belastungen
CA1110474A (en) Thread forming screw with step taper and dies for making the same
USRE28111E (en) Fastener with improved thread construction
US3426820A (en) High friction screw
US2802238A (en) Screw press for working plastics
US2896495A (en) Self-threading nut
US4457686A (en) Pellet extrusion die
US3391657A (en) Wear compensating die
US4804276A (en) Cage for a rolling bearing
EP0101196A2 (de) Matrize für Pelletpresse
ES279683U (es) Una matriz de maquina granuladora utilizable por ejemplo para piensos compuestos.
US4474073A (en) Spindle drive assembly with recirculating balls
US2196569A (en) Friction disk and method of making the same
JP2005530967A5 (de)
US3115675A (en) Extrusion apparatus with degasification elements
CA2167728C (en) Pressed body prepared from plant material by pelletization and device for preparing same
EP1041300B1 (de) Selbstschneidende Schraube für Metall mit sechs prismatisch geformten Kanten
EP0296397B1 (de) Treibkeilriemen
US3171146A (en) Thread swaging tap
US4316713A (en) Die for pelletizing machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19851125

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PELLET TECHNOLOGY (AUSTRALIA) PTY. LIMITED

17Q First examination report despatched

Effective date: 19861218

ITF It: translation for a ep patent filed

Owner name: FIAMMENGHI - DOMENIGHETTI

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19880302

Ref country code: AT

Effective date: 19880302

REF Corresponds to:

Ref document number: 32677

Country of ref document: AT

Date of ref document: 19880315

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19880331

REF Corresponds to:

Ref document number: 3375767

Country of ref document: DE

Date of ref document: 19880407

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19880731

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950713

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950721

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950725

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19950731

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19970201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970328

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970402

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000712

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL