Locking device for a tire mounted on a wheel rim to optimize dynamic balancing of a tired wheel

A method for mounting a tire onto a wheel rim comprising the following steps:

• providing a locking device for a tire in a tired-wheel maintenance machine, the machine comprising a support frame, at least one rotatable support for a wheel rim mounted for rotation on said support frame, a blocking/unblocking element for said wheel rim, a driving element for said at least one rotatable support, and said locking device comprising a holding element anchorable to said support frame and including at least one flexible element suitable for removably at least partly engaging said tire of a tired wheel and imparting a tangential force to said tire, thereby preventing the tired wheel from rotating, and facilitating relative rotation between the tire and the rim, when a wheel rim of the tired wheel is controllably angularly displaced by said drive element, said at least one flexible element arranged to be wound around, and unwound from a reel member mounted for rotation on said support frame, said device further comprising a deformable ring member removably securable around an upright member of said tired-wheel maintenance machine, said ring member comprising a linking element for anchoring said reel member, said linking element including an L-shaped strap and a C-shaped plate, said L-shaped strap being securable to said C-shaped plate by engaging a screw element into a respective opening in said L-shaped strap and said C-shaped plate;
• positioning a wheel rim onto the rotatable support;
• locating a tyre comprising a tread portion, a first and a second bead onto said wheel rim;
• forcing by means of a manually operated mounting-dismounting tool, a portion of said first or said second bead into said wheel rim;
• setting into rotation said rotatable support, keeping said mounting-dismounting tool stationary;
• and
• wounding said least one flexible element around a portion of tread of said tyre in order to engage said tyre thereby substantially preventing it from rotating with the rotatable support.

A locking device for a tire in a tired-wheel maintenance machine, the machine comprising:

• a support frame,
• at least one rotatable support for a wheel rim mounted for rotation on said support frame,
• a blocking/unblocking element for said wheel rim,
• a driving element for said at least one rotatable support, and
• said locking device comprising a holding element anchorable to said support frame and at least one flexible element suitable for removably at least partly engaging said tire of a tired wheel and imparting a tangential force to said tire, thereby preventing the tired wheel from rotating, and facilitating relative rotation between the tire and the rim, when a wheel rim of the tired wheel is controllably angularly displaced by said drive element:
• said at least one flexible element arranged to be wound around, and unwound from a reel member mounted for rotation on said support frame;
• said device further comprising at least a retaining unit, said retaining unit comprising a rotatable eccentric roller or cylinder and an idle roller or cylinder, free to rotate about an axis of rotation parallel to the eccentric roller axis of rotation to delimit therebetween an interspace, and a control element arranged to displace said eccentric roller with respect to the idle roller between an unblocking position of the at least one flexible element in which the eccentric roller is at a predetermined distance away from the idle roller, and a blocking position of the at least one flexible element, in which the eccentric roller is closer to the idle roller and the at least one flexible element is locked between the eccentric roller and the idle roller in said interspace.