EP0738585A2 - Transmission pour l'entraînement des vis d'une presse à double vis - Google Patents

Transmission pour l'entraînement des vis d'une presse à double vis Download PDF

Info

Publication number: EP0738585A2
Authority: EP; European Patent Office
Prior art keywords: shaft; gear; drive shaft; coupled; hand
Prior art date: 1995-04-19
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

EP96103491A

Other languages

German (de)

English (en)

Other versions

EP0738585B1 (fr

EP0738585A3 (fr

Inventor

Johannes Dr.-Ing. Weber

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.)

Individual

Original Assignee

Individual

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.)

1995-04-19

Filing date

1996-03-06

Publication date

1996-10-23

1996-03-06 Application filed by Individual filed Critical Individual

1996-10-23 Publication of EP0738585A2 publication Critical patent/EP0738585A2/fr

1997-02-26 Publication of EP0738585A3 publication Critical patent/EP0738585A3/fr

2001-01-17 Application granted granted Critical

2001-01-17 Publication of EP0738585B1 publication Critical patent/EP0738585B1/fr

2016-03-06 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- B30B11/24—Extrusion presses; Dies therefor using screws or worms
- B30B11/241—Drive means therefor; screw bearings

Definitions

the invention relates to a gear arrangement for driving the two screws of a twin-screw press according to the preamble of claim 1.
Such a gear arrangement is known for example from US-A-3 766 797.
the second drive shaft and the intermediate shaft are coupled to one another via two gearwheel pairs.
this gear arrangement has the advantage that the radial distance between the output shafts of the reduction gear does not have to correspond to the radial distance between the screws of the twin-screw press. This allows gears with a larger diameter to be used.
the transmissible torque is limited by the load capacity of the two gear pairs.
the invention has for its object to design a transmission arrangement of the type mentioned in such a way that a higher torque than the two known transmission arrangements can be transmitted with the same overall length or that the overall length of the transmission arrangement is less with the same transferable maximum torque.
the gear arrangement according to the invention surprisingly combines the advantages of the known gear arrangements.
the maximum transmissible torque can be increased by 50% compared to the solution known from US Pat. No. 3,766,797.
the maximum transmissible torque can also be increased despite the shorter overall length.
the load balancing device can comprise a pressure transmission device which can be axially loaded by the axially movable gear wheels.
the pressure transmission device can comprise at least one compensation cushion, for example a closed hydraulic compensation cushion, which is arranged axially between two counter-rotating, helical gears 34, and that the third gear 34 acts on the compensating cushion 44 via a piston 38 which penetrates an axial bore in the helical gear 34 with it in the same direction.
the first drive shaft and the intermediate shaft are each coupled to the respective worm shaft via an axial bearing, so that the gear arrangement itself remains free of axial forces which are transmitted by the worm shafts during operation.
a first drive shaft 14 is mounted in a transmission housing 10 with the aid of bearings 12, which can be coupled at its rear end to an output shaft 15 of a reduction gear (not shown) and at its front end is coupled to a first worm shaft 18 via a connecting shaft 17 passing through an axial bearing unit 16 .
This worm shaft 18 is thus driven directly by the reduction gear via the first drive shaft 14.
the second worm shaft 20 is coupled via a second connecting shaft 23 which passes through a further axial bearing unit 22 to an intermediate shaft 24 which is mounted in the transmission housing 10 by means of bearings 26 and carries three helical toothed gears or pinions 28.
Two of these sprockets 28 are helically toothed in the same direction, while the third pinion 28 is helically toothed in the opposite direction with a helix angle which causes the axial force of the third pinion 28 to be equal in magnitude but equal to the sum of the axial forces of the first-mentioned pinions 28.
This intermediate shaft 24 is driven by a second drive shaft 30, which is mounted in the transmission housing 10 with the aid of bearings 32 and is coupled at its rear end to a further output shaft 40 of the reduction gear, not shown.
the second drive shaft 30 comprises gear wheels or pinions 34 which fit helically to the pinions 28 and are axially movably mounted.
the middle pinion 34 has an axial bore 36, in which a piston 38 is axially displaceable, which is connected to one of the two outer pinions 34.
the other outer pinion 34 has on its side facing the middle pinion an axial piston 42 which engages in the bore 36 and is coupled to the piston 38 which is displaceable therein via a compensating cushion 44.
the bevel of the gear pair 28, 34 adjacent to the reduction gear is selected such that the resulting axial force of the associated pinion 34 is at least approximately equal in magnitude to the sum of the gear wheels 34 which are oppositely helically toothed by the other two.
the surface of the piston 42 bearing on the compensation cushion 44 is equal to the sum of the surface of the piston 38 resting on the compensation cushion 44 and an annular surface 46 (FIG. 2) on the central toothed wheel 34.
a relatively high torque can be transmitted to each of the drive shafts, the drive direction of the two drive shafts being freely selectable so that they are driven either in the same direction or in opposite directions.
the maximum transferable torque can be increased by using more than two pairs of gears and with load balancing. With a relatively small overall length of the gear arrangement, a larger torque can be transmitted than the known solutions.
the described embodiment includes a gear arrangement with three pairs of gears. It goes without saying that more than three pairs of gearwheels can also be provided.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Gear Transmission (AREA)
Extrusion Moulding Of Plastics Or The Like (AREA)
Friction Gearing (AREA)
Transmission Devices (AREA)
Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

EP96103491A 1995-04-19 1996-03-06 Transmission pour l'entraínement des vis d'une presse à double vis Expired - Lifetime EP0738585B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19514406A DE19514406A1 (de)	1995-04-19	1995-04-19	Getriebeanordnung zum Antrieb der beiden Schnecken einer Doppelschneckenpresse
DE19514406		1995-04-19

Publications (3)

Publication Number	Publication Date
EP0738585A2 true EP0738585A2 (fr)	1996-10-23
EP0738585A3 EP0738585A3 (fr)	1997-02-26
EP0738585B1 EP0738585B1 (fr)	2001-01-17

Family

ID=7759877

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP96103491A Expired - Lifetime EP0738585B1 (fr)	1995-04-19	1996-03-06	Transmission pour l'entraínement des vis d'une presse à double vis

Country Status (3)

Country	Link
EP (1)	EP0738585B1 (fr)
AT (1)	ATE198722T1 (fr)
DE (2)	DE19514406A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2342421A (en) *	1998-10-08	2000-04-12	Mmd Design & Consult	A drive transmission unit
DE102006037509B4 (de) *	2006-08-10	2012-08-30	Johannes Weber	Getriebeanordnung zum Antrieb der beiden Schnecken eines Doppelschneckenextruders

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1775782B1 (de) *	1968-09-23	1971-10-07	Weber Heinz Dipl Ing	Zahnradgetriebe mit einer eingangswelle und zwei parallelen eng zueinander angeordneten ausgangswellen mit lastausgleich
US3766797A (en) *	1972-05-15	1973-10-23	Krauss Maffei Ag	Power distributing transmission systems
DE2412736C3 (de) *	1974-03-16	1978-04-27	Heinz Dipl.-Ing. 8640 Kronach Weber	Zahnradgetriebe mit einer Eingangswelle und zwei parallelen, eng zueinander angeordneten Ausgangswellen
DE4313079A1 (de) *	1993-04-22	1994-10-27	Otto Michael Dr Ing Militzer	Getriebe für Doppelschnecken-Extruder

1995
- 1995-04-19 DE DE19514406A patent/DE19514406A1/de not_active Withdrawn
1996
- 1996-03-06 AT AT96103491T patent/ATE198722T1/de active
- 1996-03-06 DE DE59606326T patent/DE59606326D1/de not_active Expired - Lifetime
- 1996-03-06 EP EP96103491A patent/EP0738585B1/fr not_active Expired - Lifetime

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2342421A (en) *	1998-10-08	2000-04-12	Mmd Design & Consult	A drive transmission unit
GB2342421B (en) *	1998-10-08	2003-03-19	Mmd Design & Consult	A Conveyor
DE102006037509B4 (de) *	2006-08-10	2012-08-30	Johannes Weber	Getriebeanordnung zum Antrieb der beiden Schnecken eines Doppelschneckenextruders

Also Published As

Publication number	Publication date
EP0738585B1 (fr)	2001-01-17
DE19514406A1 (de)	1996-10-24
EP0738585A3 (fr)	1997-02-26
ATE198722T1 (de)	2001-02-15
DE59606326D1 (de)	2001-02-22

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DE3001784C2 (de)	1986-07-24	Getriebeanordnung für Fahrzeuge
EP0275485B1 (fr)	1992-05-06	Extrudeuse à vis sans fin à deux filets
DE19750834C1 (de)	1998-10-29	Mechanisches Sperrdifferential
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DE10353927A1 (de)	2004-06-17	Achsen-Anordnung
EP0432349B1 (fr)	1994-12-14	Transmission
DE19736572A1 (de)	1999-02-25	Getriebe mit Leistungsverzweigung, insbesondere für einen Hubschrauber-Rotor-Antrieb
DE3601766C2 (fr)	1988-09-15
DE4414098C2 (de)	1998-11-26	Getriebe
EP0738585B1 (fr)	2001-01-17	Transmission pour l'entraínement des vis d'une presse à double vis
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DE2412736B2 (de)	1977-09-01	Zahnradgetriebe mit einer eingangswelle und zwei parallelen, eng zueinander angeordneten ausganswellen
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AT505063B1 (de)	2010-11-15	Getriebeanordnung zum antrieb der beiden schnecken eines doppelschneckenextruders
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