Conveyor gripper for a flat object, especially a textile web
AssigneeCarl Schmale GmbH & Co. KG
InventorJohannes Freermann
Life of this patent
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Abstract
A conveyor gripper for a substantially flat object, especially a textile web, has two gripping plates forming gripper tongs held in a gripping body. A pressing force which is constant over the entire length of the gripping plates is generated by at least one pressurizable air tube. A plurality of compressable springs distributed over the length of the gripping plates and can act against the pressing force of the air tubes. Also a plurality of safety straps can be located on the gripper body to prevent the spreading out of the gripper body.
Claims10
A conveyor gripper for a substantially flat object, especially for a textile web, comprising:
- an elongated gripping housing having a front and a back portion, said front portion being formed with an opening;
- two substantially identical gripping plates in said housing;
- means forming a hinge connecting said plates to each other one end of said plates, said plates protruding beyond said housing through said opening and having opposite free spaced apart ends, said gripping plates having respective outer and inner sides, said inner sides facing each other, each of said inner sides being formed with a recess aligned with the recesses of the other inner side and having identical widths;
- spring means in said recesses and including a plurality of springs for displacing said deformable gripping plates away from each other positioned between and spaced apart over the lengths of said gripping plates;
- a respective flexible pressurizable oval air tube extending over an entire length of each said plates, each of said flexible oval air tubes having two generally straight opposite portions, one of said portions pressing against said housing and the other pressing against said outer side of the respective gripping plate over a width of said plate at least equal to said width of the respective recess, said tubes being oval during pressurization thereof;
- and
- means for pressurizing said flexible tubes, said tubes pressing against the respective gripping plates over the entire length thereof with a uniform pressure inducing a swinging movement of each of said gripping plate toward the other gripping plate with a uniform gripping force between said plates over said length.
A gripper for a textile web, comprising;
- a pair of gripping plates;
- hinge means connecting said plates together along respective edges of said plates;
- a housing enclosing said edges and having walls confronting said plates proximal to said edges, said hinge means connecting said edges to said housing;
- respective air tubes received between each of said walls and the respective plate and pressurizeable with compressed air to press said plates toward one another;
- and
- a plurality of spaced apart compressible springs distributed over the length of said gripping plates and interposed between them to act against the pressing force of said air tubes.
Dependencies are inferred from the claim text.