Automatic twine wrapper for round bale forming machine

Automatische Bindevorrichtung für Rundballenpressen

Dispositif de liage automatique pour presses à balles cylindriques


An automatic twine wrapper (31) for a round baler (10) is provided comprising a twine dispensing arm (36) having a retracted home position and which is movable in the vicinity of the bale chamber inlet (41). A drive motor (42) is operably coupled with the dispensing arm (36) for moving the latter during the twine dispensing cycle and automatic control means (65) are coupled with the drive motor (42) for, when triggered, causing the drive motor (42) to move the dispensing arm (36) in accordance with a predetermined dispensing cycle from its retracted home position toward the bale chamber inlet (41) and in the vicinity thereof and back to its home position as the twine dispensing cycle is being completed. The control means (65) comprise a starter means (50) operable to initiate the dispensing cycle and detector means (61) operable to detect whether twine (32) is wrapped upon the bale (R) or otherwise. The detector means (61) generate a first signal when twine (32) is not being applied upon the bale and a second signal when twine wrapping has started. The control means (65) further also comprise a time delay (92) coupled with the detector means (61) and which is operable to check the condition detected by the detector means (61) at a predetermined point in the dispensing cycle for causing at least temporary interruption of the dispensing cycle in the presence, at said point, of said first signal, and for permitting uninterrupted continuation of the dispensing cycle when, at said point in the cycle, the detector means (61) generate said second signal.




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Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
    EP-0090120-A1October 05, 1983JOHN DEERE (Société Anonyme)Binding device by means of two twines for rotobalers
    EP-0117817-A1September 05, 1984Regie Nationale Des Usines RenaultAutomatic control device for wrapping round bales
    US-4118792-AOctober 03, 1978Allen-Bradley CompanyMalfunction detection system for a microprocessor based programmable controller
    US-4182235-AJanuary 08, 1980Robert Bosch GmbhMethod and arrangement for binding round bales
    US-4393647-AJuly 19, 1983Yohji KitamuraSnail wire arrangement for yarn breakage detection in ring frames

NO-Patent Citations (0)


Cited By (7)

    Publication numberPublication dateAssigneeTitle
    EP-0252457-A1January 13, 1988DEERE & COMPANYRundballenpresse für landwirtschaftliches Erntegut
    EP-0271390-A1June 15, 1988Hesston BraudPresse à balles cylindriques automatisée
    EP-0286900-A1October 19, 1988HESSTON BRAUD (Société Anonyme)Système d'indication pour détecter une défaillance dans un mécanisme noueur d'une presse à balles
    EP-0309939-A1April 05, 1989HESSTON BRAUD (Société Anonyme)Twine monitoring assembly for round balers
    EP-0978231-A1February 09, 2000New Holland Belgium N.V.Presse à balles rondes avec dispositif de contrôle de l'enroulement du fil
    FR-2606966-A1May 27, 1988Hesston SaPresse a balles cylindriques automatisee
    FR-2713041-A1June 09, 1995Gehl CoSystème de contrôle et de commande d'un presse-balles pour balles rondes.