A let-off mechanism for a gripper jacquard weaving machine

Abstract

The utility model relates to weaving technology field, concretely is a kind of warp let-off mechanism of rapier jacquard loom, including the main shaft rotationally installed on rack, the main shaft is provided with the pay-off roller of warp thread winding, the guide roller is rotationally installed on the rack, the yarn distributor is provided on the rack, multiple guide holes are equidistantly formed on the yarn distributor, warp thread is unwound by pay-off roller, and after winding over guide roller, it is inserted into guide hole inside, multiple equidistant distribution nozzles are installed on the position of yarn distributor and located above guide hole, the inflation mechanism for intermittent air supply to nozzle is provided on the rack, the utility model can utilize warp let-off mechanism self power, automatically, intermittently remove warp yarn surface impurities in warp let-off process, effectively improve fabric processing quality.

Claims

1. A warp feeding mechanism for a rapier jacquard loom, comprising a main shaft (2) rotatably mounted on a frame (1), wherein a warp feed roller (3) for winding warp yarns is provided on the main shaft (2), characterized in that, A yarn guide roller (4) is rotatably mounted on the frame (1). A yarn separating plate (6) is provided on the frame (1). Multiple yarn guide holes (7) are equally spaced on the yarn separating plate (6). The warp yarn is unwound by the unwinding roller (3), passes around the yarn guide roller (4), and then enters the yarn guide hole (7). Multiple nozzles (8) are equally spaced on the yarn separating plate (6) and located above the yarn guide hole (7). An air-filling mechanism for intermittently pumping air into the nozzles (8) is provided on the frame (1). The inflation mechanism includes a cylinder (9), in which a piston (10) is movably engaged. An air inlet pipe (11) and an air outlet pipe (12) are installed on the cylinder (9). The air outlet pipe (12) is connected to a nozzle (8). The piston (10) and the main shaft (2) are connected by a linkage structure. When the main shaft (2) rotates, it will drive the piston (10) to slide up and down in the cylinder (9).

2. The warp feeding mechanism of a rapier jacquard loom according to claim 1, characterized in that, One-way valves are installed on the air inlet pipe (11) and the air outlet pipe (12). The one-way valves allow external gas to enter the cylinder (9) through the air inlet pipe (11) in one direction, and the gas inside the cylinder (9) enters the nozzle (8) through the air outlet pipe (12) in one direction.

3. The warp feeding mechanism of a rapier jacquard loom according to claim 2, characterized in that, The linkage structure includes a drive shaft (17) rotatably mounted on the frame (1). The drive shaft (17) is connected to the main shaft (2) through a sprocket mechanism. When the main shaft (2) rotates, it will drive the drive shaft (17) to rotate. A crank (16) is provided on the drive shaft (17). A piston rod (13) is provided on the piston (10) and is movably inserted into the cylinder (9). A hinge seat (14) is provided on the piston rod (13). A connecting rod (15) is provided between the hinge seat (14) and the crank (16). The two ends of the connecting rod (15) are respectively hinged to the crank (16) and the hinge seat (14).

4. The warp feeding mechanism of a rapier jacquard loom according to claim 3, characterized in that, The sprocket mechanism includes a driven sprocket (18) fixed on the drive shaft (17) and a driving sprocket (19) fixed on the main shaft (2), and the driven sprocket (18) and the driving sprocket (19) are connected by a chain (20).

5. The warp feeding mechanism of a rapier jacquard loom according to claim 1, characterized in that, A servo motor (5) is provided on the frame (1), and the output end of the servo motor (5) is connected to the spindle (2) through a coupling to drive the spindle (2) to rotate.

6. The warp feeding mechanism of a rapier jacquard loom according to claim 1, characterized in that, A dust collection hopper (21) is installed on the frame (1) and below the yarn guide hole (7).

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