SU132576A1 - Periodic bobbin shears for automatic looms - Google Patents

Description

Batch scissors of periodic action for automatic weaving machines are known, including fixed and movable knives installed on the holder of a spinner, a ratchet with a notch for a feeding dog fed to the batan’s path when removing it from the cutout of the ratchet from the lever for switching the machine, and stopping the dog.

In these scissors, the pawl is movable, the knife is spring-loaded, and its withdrawal from the ratchet notch is made by means of a complex transmission connected to the roller lever for switching on the spool changing mechanism.

The described batch scissors of a periodic action have a more simplified design, which increases at the same time the reliability of the scissors. For this purpose, the movable knife is provided with a shank serving as a feeding dog, the ratchet is spring-loaded, and the tractor operating from the lever of the roller for switching on the spool changing mechanism is equipped with two protrusions controlling both dogs.

FIG. 1 shows a pair of shears; in fig. 2 is a diagram of the mutual arrangement of the parts of the scissors when the movable knife is locked.

Cord shears include two fixed blades mounted on a holder / reel, enclosed within tide 2, and a movable knife 3, which periodically passes between the fixed blades and cuts off the weft. Dpl holes are made in holder / reel. A bolt 4 is installed in one pin hole, on which a stand 5 is fixed with a spring-loaded retaining dog 6 interacting with a ratchet 7, which is free to sit on an axis 5 fixed on a thread in another hole until the rust is /. Ratchet has a deep

No. 132576 .- 2 necklines. I at which at some point enters the shank W of the movable knife 3, serving as a feeding dog, interacting with the ratchet 7; the latter is spring-loaded with the aid of a 1J helical screw worn on the axle, one end of which enters the holes made in the ratchet around its axis, and the other end enters the holes made in the holder /. To control the retention dog s and the feeding dog - shank 10 of the movable knife 3, it is designed to ha 12, equipped with two protrusions 13 and 14 interacting with the dogs 6 and 10. Ta 12 ha is driven by the lever 15 of the roller 16 to turn on the spool changing mechanism; to the initial position, the th ha 12 is returned by the spring 17.

The work of scissors is as follows.

During the operation of the loom, when a new spool is injected, the roller 16 for turning on the mechanism for changing the shpul is rotated, and the erg lever 15 retracts the thru 12 in the direction indicated in FIG. 1 with an arrow A. At the same time, the projection 13 of the gi 12 presses down the movable knife 3, which was previously fixed in the notch 9 of the ratchet 7, and thus puts the movable knife 3 into operation, and the other protrusion of 14 of the gi 12 pulls the retaining dog 6. The released ratchet is rotated counterclockwise under the action of its spring 11 until the spring unwinds (the angle of rotation of the ratchet 7 is pre-adjusted by installing the ends of the spring 11 in the holes of the ratchet and the holder). During further operation of the machine, the bat 18 moves the movable knife 3 in the opposite direction, which with its shank 10, turns the ratchet 7 like a dog, and the retaining dog 6 locks the ratchet 7. During this movement, the movable knife 3 cuts the distance between the pair of fixed knives, When the batane 18 retracts back, the movable knife 3 is returned to the forward position by the action of the spring 19. At the next stroke of the baton 18, the movable knife 3 again passes between the stationary knives, and its shank 10 rotates the ratchet 7. These movements are reserved for cutting the root and repeat several times depending on the installation of the ratchet 7 until the latter comes to I cut the knife 3 with my neck and the baton 18 drives a movable knife into it. In this case, the knife 3 remains locked in the notch 9 of the ratchet 7 until the next power up, i.e., until the projection 13 ti 12 again depresses it from the notch 9 when inserting a new weft pin. which ensures the frequency of action of scissors.

Subject invention

Periodical bore scissors for automatic weaving machines, including spike-mounted, non-stitched and movable knives, a ratchet with a cut-out for the feeding dog, followed the batan’s way when removing it from the cutout of the ratchet from the lever for switching the shupel machine, and stopping the dog, different, different ratchets from the lever for turning on the machine tool, and stopping the dog, different, different, ratchet from the lever for switching on the machine tool, and stopping the dog, different, different ratchet from the lever for turning on the machine tool, and stopping the dog, different, different ratchet from the lever for turning on the machine tool, and stopping the dog, different, different ratchet from the lever for turning on the machine tool, and stopping the dog, different diagrams, and detaining the fact that, in order to simplify the design and increase reliability of operation, the movable knife is equipped with a shank, which feeds the feeding dog, the ratchet is spring-loaded, and the pulley acting from the lever The switch on mechanism for changing the push-rods is provided with two protrusions controlling both dogs.