Thread clamp for a weaving machine
AssigneePicanol N.V., naamloze vennootschap
InventorsJean Marie Bamelis, Chris Delanote, Jozef Peeters, Herman Salomez
Life of this patent
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Abstract
A thread clamp for a weaving machine includes a clamp having at least two clamping parts between which a thread may be clamped and an actuator arranged to move the clamping parts between clamping and unclamped positions. The actuator is arranged to operate the clamp so that it moves at least in one direction by a negative fluid pressure. The actuator may be formed as a small piston that may be actuated both by positive pressure and negative pressure to move the clamp between clamping and unclamped positions.
Claims18
Thread clamp for a weaving machine, comprising a clamp having at least two clamping parts between which a thread may be clamped;
- an actuator arranged to move the clamping parts between at least two positions, including a closed position, wherein the clamping parts are pushed towards each other, and an open position, wherein the clamping parts are disposed at a distance from each other;
- wherein said actuator comprises at least a small pneumatically actuatable piston which upon actuation moves the clamp into at least one of said two positions, said piston comprising a small plunger having two extremities, one extremity constituting one of said two clamping parts of said clamp, and the other extremity comprising a piston surface disposed in a chamber, and arranged to be actuated by negative pressure supplied to the chamber, and a conduit in communication with said chamber arranged to supply negative pressure to said chamber and piston surface;
- wherein said actuator is configured such that its movement is effected exclusively by pneumatic force.
Thread clamp for a weaving machine, comprising a clamp having at least two clamping parts between which a thread may be clamped;
- an actuator arranged to move the clamping parts between at least two positions, including a closed position, wherein the clamping parts are pushed towards each other, and an open position, wherein the clamping parts are disposed at a distance from each other;
- wherein said actuator comprises at least a small pneumatically actuatable piston which upon actuation moves the clamp into at least one of said two positions, said piston comprising a small plunger having two extremities, one extremity constituting one of said two clamping parts of said clamp, and the other extremity comprising a piston surface disposed in a chamber, and arranged to be actuated by negative pressure supplied to the chamber, and a conduit in communication with said chamber arranged to supply negative pressure to said chamber and piston surface;
- wherein the chamber is arranged to be supplied with an overpressure for moving the piston, said conduit also arranged to supply overpressure to said chamber.
Thread clamp for a weaving machine, comprising a clamp having at least two clamping parts between which a thread may be clamped;
- an actuator arranged to move the clamping parts between at least two positions, including a closed position, wherein the clamping parts are pushed towards each other, and an open position, wherein the clamping parts are disposed at a distance from each other;
- wherein said actuator comprises at least a small pneumatically actuatable piston which upon actuation moves the clamp into at least one of said two positions, said piston comprising a small plunger having two extremities, one extremity constituting one of said two clamping parts of said clamp, and the other extremity comprising a piston surface disposed in a chamber, and arranged to be actuated by negative pressure supplied to the chamber, and a conduit in communication with said chamber arranged to supply negative pressure to said chamber and piston surface;
- wherein said pneumatically actuatable piston is arranged to be actuated into another position by another actuator arrangement forming part of the thread clamp;
- and
- wherein the pneumatically actuatable piston is arranged to be actuated into another position by a pressurized medium, and a conduit arranged to supply a pressurized medium to said chamber and piston surface.
Dependencies are inferred from the claim text.