US3129458A - Pellet mill die and method of forming same - Google Patents

Pellet mill die and method of forming same Download PDF

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Publication number
US3129458A
US3129458A US110167A US11016761A US3129458A US 3129458 A US3129458 A US 3129458A US 110167 A US110167 A US 110167A US 11016761 A US11016761 A US 11016761A US 3129458 A US3129458 A US 3129458A
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Prior art keywords
die
roll
holes
pellet mill
traversed
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US110167A
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Jack L Mitchell
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California Pellet Mill Co
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California Pellet Mill Co
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Application filed by California Pellet Mill Co filed Critical California Pellet Mill Co
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    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/23—Hay wafering or pelletizing means

Definitions

  • a pellet mill die having a compression side adapted to be traversed by an extrusion roll, a discharge side, and a plurality oi die holes through said die from said compression side to said discharge side and of like diameter at the compression ends thereof, said die being of uniform thickness between its compression side and its discharge side, and the holes in said die traversed by an edge portion of such roll being counter-bored at their discharge ends to reduce the resistance to extrusion of material thereto as compared to the resistance offered by other of said holes traversed by an intermediate portion of said roll.

Description

A ril 21, 1964 J. MITCHELL 3,129,458
,PELLET MILL DIE AND METHOD OF FORMING SAME I Filed May 15, 1961 INVENTOR. JflC/f L. MITCHELL United States Patent 3,122,453 PELLET MILL DIE AND METHUD 0F FOG SAME Jack L. Mitchell, Muscatine, Iowa, assignor to California Pellet Mill Qompan a corporation of California Filed May 15, 1961, Ser. No. 110,167
Claims. (Cl. 18-42) from both sides of the roll, with the result that more h the holes located in the central region of the die than toward the outer edges Under these conditions, the die will wear excessive escape of material from the lower edge portion of an extrusion roll, while material will be free to escape beyond the upper edge portion of such roll. ingly, in this type of mill, the wear on the die will be excessive over the lower rows of die holes pression side or" the die.
Additional objects of my invention will be brought out in the following description of a preferred embodiment of the same, taken in conjunction with the accompany- 3,l29,458 Patented Apr. 21, 1964 duction would normally be less, the degree of reduction of such resistance being roughly 1n accordance with the The PIOVlSlOIl of these counter-bores, produces a Working section 23 in a counter-bored hole of less length than the working section 25 of the holes in the central region of the dre, by an amount equal to the depth of the counter-bore, and by reason or" this, decreases the e 0 diameter at the compression ends thereof, said die being of uniform thickness between its compression side and its discharge side, an extrusion roll in extrusion relationship to and adapted for movement over the compression side of said die, the holes in said die traversed by an edge portion of said roll being counter-bored at their discharge ends to reduce the resistance to extrusion of material therethrough as compared to the resistance ofiered by others of said holes traversed by an intermediate portion of said roll.
2. A pellet mill die having a compression side adapted to be traversed by an extrusion roll, a discharge side, and a plurality oi die holes through said die from said compression side to said discharge side and of like diameter at the compression ends thereof, said die being of uniform thickness between its compression side and its discharge side, and the holes in said die traversed by an edge portion of such roll being counter-bored at their discharge ends to reduce the resistance to extrusion of material thereto as compared to the resistance offered by other of said holes traversed by an intermediate portion of said roll.
References Cited in the tile of this patent UNITED STATES PATENTS Webb Oct. 1, 1946 2,902,715 Norman Sept. 8, 1959 2,902,949 Meakin Sept. 8, 1959 FOREIGN PATENTS 205,253 Australia Jan. 3, 1957 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,129,458 April 21, 1964 Jack L. Mitchell It is hereby certified that error appears in the above numbered patent req'iiring correction and that the said Letters Patent should read as corrected below.
Column 4, line 4, for "thereto" read therethro ugh Signed and sealed'i'this 29th day of June 1965.
EAL)
IEST W. SWIDER EDWARD J. BRENNflrh'ng Officer Commissioner of Patents

Claims (1)

  1. 2. A PELLET MILL DIE HAVING A COMPRESSION SIDE ADAPTED TO BE TRAVERSED BY AN EXTRUSION ROLL, A DISCHARGE SIDE, AND A PLURALITY OF DIE HOLES THROUGH SAID DIE FROM SAID COMPRESSION SIDE TO SAID DISCHARGE SIDE AND OF LIKE DIAMETER AT THE COMPRESSION ENDS THEREOF, SAID DIE BEING OF UNIFORM THICKNESS BETWEEN ITS COMPRESSION SIDE AND ITS DISCHARGE SIDE, AND THE HOLES IN SAID DIE TRAVERSED BY AN EDGE PORTION OF SUCH ROLL BEING COUNTER-BORED AT THEIR DISCHARGE ENDS TO REDUCE THE RESISTANCE TO EXTRUSION OF MATERIAL THERETO AS COMPARED TO THE RESISTANCE OFFERED BY OTHER OF SAID HOLES TRAVERSED BY AN INTERMEDIATE PORTION OF SAID ROLL.
US110167A 1961-05-15 1961-05-15 Pellet mill die and method of forming same Expired - Lifetime US3129458A (en)

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US110167A US3129458A (en) 1961-05-15 1961-05-15 Pellet mill die and method of forming same

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204582A (en) * 1963-10-30 1965-09-07 Deere & Co Die annulus for machine for wafering hay and like forage crops
US3366078A (en) * 1966-09-12 1968-01-30 Sperry Rand Corp Ring die wafferer
US3485186A (en) * 1965-09-27 1969-12-23 Charly Vincent Construction of rollers for pellet mills
US4111632A (en) * 1977-06-20 1978-09-05 Koppers Company, Inc. Pellet mill die
US4316713A (en) * 1978-11-11 1982-02-23 Simon-Barron Limited Die for pelletizing machine
US4327050A (en) * 1980-09-22 1982-04-27 Phillips Petroleum Company Extrusion and pelleting apparatus and method
FR2506629A1 (en) * 1981-05-28 1982-12-03 Ralston Purina Co DIE FOR GRANULATION MACHINE
US4413016A (en) * 1981-05-28 1983-11-01 Ralston Purina Company Pellet die
US4446086A (en) * 1981-10-30 1984-05-01 Envirostrand, Inc. Process and apparatus for extruding stabilizers
US5458836A (en) * 1994-03-11 1995-10-17 E. I. Du Pont De Nemours And Company Polymer extrusion die and use thereof
US5597586A (en) * 1995-06-28 1997-01-28 Davidson Textron, Inc. Underwater pelletizer die system for forming multisize thermoplastic pellets
WO2003078151A1 (en) * 2002-03-15 2003-09-25 KEMYX S.p.A. Extruder for pelletization machines pelletization machines providing said extruder and process for producing pellets
US20050266112A1 (en) * 2002-11-29 2005-12-01 Zhanbin Che Extrusion shaping of a mold cavity and a molding machine for molding shapeable material made of biological matter in a loose condition
US20080290548A1 (en) * 2007-05-22 2008-11-27 Scott Landers Pellet mill die and pelletizing process
US20150217498A1 (en) * 2010-02-24 2015-08-06 Peparlet Co., Ltd. Method of producing granular excreta treating material using an extrusion type compressive granulating apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408713A (en) * 1944-02-05 1946-10-01 American Viscose Corp Extrusion device
US2902949A (en) * 1953-11-06 1959-09-08 Edgar N Meakin Means for extruding moldable material having viscous properties
US2902715A (en) * 1956-07-02 1959-09-08 Norman Geoffrey Bertrand Extrusion-consolidation die

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408713A (en) * 1944-02-05 1946-10-01 American Viscose Corp Extrusion device
US2902949A (en) * 1953-11-06 1959-09-08 Edgar N Meakin Means for extruding moldable material having viscous properties
US2902715A (en) * 1956-07-02 1959-09-08 Norman Geoffrey Bertrand Extrusion-consolidation die

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204582A (en) * 1963-10-30 1965-09-07 Deere & Co Die annulus for machine for wafering hay and like forage crops
US3485186A (en) * 1965-09-27 1969-12-23 Charly Vincent Construction of rollers for pellet mills
US3366078A (en) * 1966-09-12 1968-01-30 Sperry Rand Corp Ring die wafferer
US4111632A (en) * 1977-06-20 1978-09-05 Koppers Company, Inc. Pellet mill die
US4316713A (en) * 1978-11-11 1982-02-23 Simon-Barron Limited Die for pelletizing machine
US4327050A (en) * 1980-09-22 1982-04-27 Phillips Petroleum Company Extrusion and pelleting apparatus and method
US4413016A (en) * 1981-05-28 1983-11-01 Ralston Purina Company Pellet die
US4380424A (en) * 1981-05-28 1983-04-19 Ralston Purina Company Pellet die
FR2506629A1 (en) * 1981-05-28 1982-12-03 Ralston Purina Co DIE FOR GRANULATION MACHINE
US4446086A (en) * 1981-10-30 1984-05-01 Envirostrand, Inc. Process and apparatus for extruding stabilizers
US5458836A (en) * 1994-03-11 1995-10-17 E. I. Du Pont De Nemours And Company Polymer extrusion die and use thereof
US5597586A (en) * 1995-06-28 1997-01-28 Davidson Textron, Inc. Underwater pelletizer die system for forming multisize thermoplastic pellets
WO2003078151A1 (en) * 2002-03-15 2003-09-25 KEMYX S.p.A. Extruder for pelletization machines pelletization machines providing said extruder and process for producing pellets
SG104362A1 (en) * 2002-03-15 2004-06-21 Fulvio Soldaini Improved extruder for pellettization machines, pelletization machine providing said extruder and process for producing pellets
US20050266112A1 (en) * 2002-11-29 2005-12-01 Zhanbin Che Extrusion shaping of a mold cavity and a molding machine for molding shapeable material made of biological matter in a loose condition
US20080290548A1 (en) * 2007-05-22 2008-11-27 Scott Landers Pellet mill die and pelletizing process
US20150217498A1 (en) * 2010-02-24 2015-08-06 Peparlet Co., Ltd. Method of producing granular excreta treating material using an extrusion type compressive granulating apparatus
US10065356B2 (en) * 2010-02-24 2018-09-04 Peparlet Co., Ltd. Method of producing granular excreta treating material using an extrusion type compressive granulating apparatus

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