JPH0569033U - Threading device - Google Patents

Abstract

(57) [Summary] [Purpose] Even for a cone package having different inclination angles on the outer circumference of the yarn layer, the yarn end is surely exposed even if the target yarn is a fine count. [Structure] A suction mouth 1 having an opening 1a oriented in the axial direction of a cone P, a plate 3 swingably supported so that an edge thereof faces the opening 1a, and a suction mouth opening 1a. It is provided with mechanisms 4 to 9 for causing the cone P to come into contact with the outer circumference of the yarn layer of the cone P at the spouting position and then slightly retract the same.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an indexing device that is provided in a yarn spinning machine and winds a yarn end of a yarn feeding cone package around a peg of a support tray with a top bunch and sucks the rest into the peg.

[0002]

[Prior Art]

 Conventionally, there is a device shown in FIG. 4 as a device for feeding a cone package. The drive roller 10 for rotating the yarn feeding cone package P inserted into the tray T, the suction mouth 1 for pulling out the yarn end of the yarn feeding package P, and the pulled-out yarn end above the peg Ta of the tray T. It is composed of a yarn pulling lever 11 for pulling to the side portion, and a pulling means 19 for pulling the pulled yarn end toward the feeding side.

[0003]

[Problems to be solved by the device]

 A slit 1b having a width of 3 mm and a length of about 500 mm for guiding the yarn sucked from the opening 1a to above the yarn feeding cone package P is formed in the upper abdomen of the suction mouth 1 of the above yarn feeder. However, the force for sucking the fine count yarn entangled with fluff is not so great, and it is difficult to find it. When the yarn end of the yarn supplying cone package P is to be projected, first, the opening 1a of the suction mouth 1 is brought close to the outer periphery of the yarn layer of the package P to suck the yarn end. As shown in FIG. 4, the suction mouth opening 1a is formed so as to be inclined to match the inclination angle of the outer circumference of the yarn layer of the cone package P. On the other hand, there are various cone packages P having different inclination angles of the outer circumference of the yarn layer, and the cone package of the incremental taper winding in which the inclination angle of the outer circumference of the yarn layer gradually increases in the winding progress stage. In this case, the inclination angle of the outer circumference of the yarn layer gradually decreases as the unwinding progresses. As described above, the inclination angle of the mouth mouth opening 1a is constant, whereas the inclination angle of the outer circumference of the yarn layer of the cone package P, which is the object of yarn suction, does not always coincide with that. A large gap may be left between the outer periphery of the yarn layer and the suction mouth opening 1a, so that the yarn end may not be sufficiently sucked.

The present invention provides a yarn feeder for a yarn spinning machine, which is capable of tapping the yarn end even for a cone package having different inclination angles on the outer circumference of the yarn layer even if the target yarn is a fine yarn. Has an aim.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the yarn feeder of the present invention has a suction mouth having an opening facing the axial direction of the cone and a swingable support so that the edge faces the opening. And a mechanism for bringing the suction mouth opening portion into contact with the outer circumference of the yarn layer of the cone at the spout position and then slightly retracting it.

[0006]

[Work]

 In the yarn feeder for the yarn spinning machine configured as described above, when the suction mouth opening is brought into contact with the outer periphery of the yarn layer of the cone at the yarn ejection position, the plate body is rotated and the edge portion is rotated. Contact the cone according to the inclination angle of the outer circumference of the yarn layer. Then, the opening of the suction mouth slightly retracts, leaving a slight gap between the outer circumference of the cone thread layer and the drive roller, which rotates the cone in the thread unwinding direction and sucks the thread end into the suction mouth. It The thread is then top bunch wrapped and sucked into the peg.

[0007]

【Example】

 With reference to FIGS. 1 to 3, a yarn feeder for a yarn spinning machine according to the present invention will be described.

In the yarn feeder for the yarn spinning machine, the base is rotatably supported by the suction air supply pipe 2 communicating with the blower, and the opening 1a is in contact with the outer periphery of the yarn layer of the cone package P at the yarn outlet position. The suction mouth 1 that can be separated, the plate 3 that is swingably supported in the suction mouth opening 1a, the two levers 4 and 5 fixed to the base of the suction mouth 1, and the machine frame in the vicinity thereof. A lever 6 rotatably supported, a spring 7 provided between the lever 4 and the lever 6, an actuator 8 (cradle lifter) such as an air cylinder for rotating the lever 5, and a lever 6 for rotating the lever 6. An actuator 9 such as an air cylinder that is operated dynamically, a drive roller 10 that rotates a tray T that is in a position where the cone package P is inserted, and a position where the cone is placed. , A yarn pulling lever 11 with a cutter 11a for hooking and guiding the yarn Y 1 extending between the cone package P and the suction mouth opening 1a, a suction pipe 12 arranged below the center of the tray T, and a tray T. It is composed of a head retainer 13 which comes into contact with and separates from the upper side circumference of the peg Ta.

The suction mouth 1 is the same as a suction mouth that sucks the yarn end on the winding package side at the time of yarn splicing in an automatic winder, and its opening 1a has a cone package P at the spout position. It is deployed so as to face the axial direction of.

As shown in FIG. 2, the plate body 3 has a slightly inclined edge portion 3a, and is swingably supported by a pin 3b on one surface of the suction mouth opening portion 1a. Then, the edge portion faces the suction mouth opening 1a in the attached state. The plate 3 serves to guide the suction air flow.

The drive roller 10 is fixed to the rotation shaft of the drive motor M, and when the yarn end of the cone package P is sucked by the suction mouth 1, the cone package P is rotated in the yarn unwinding direction to move the tray. When the top bunch is wound around the T peg Ta, the cone package P is rotated in the yarn winding direction. Positioning rollers 14 and 15 are arranged on the opposite side of the drive roller 10 with the transfer path formed by the two belt conveyors sandwiched therebetween. The positioning rollers 14 and 15 are arranged so that the tray T transferred on the transfer path stops at a predetermined position and then turns to contact the peripheral surface of the tray T.

The thread pulling lever 11 is rotatably supported by a rod 17 supported by a rotary actuator 16 by a rotary actuator 18, as shown in FIG. It acts like a joint and can rotate from the standby position shown by the solid line to the top bunch winding position shown by the chain line and the yarn end suction position shown by the chain line. A thread hooking recess 11 'is formed near the tip of the thread shifting lever 11, and a cutter 11b operated by an air cylinder 11b faces the recess 11'. The cutter 11b operates after the top bunch is wound around the peg Ta of the tray T.

The head presser 13 is composed of a plate body having a predetermined width and is rotatably supported. When the yarn end Y is wound around the peg Ta of the tray T to form a top bunch, the head presser 13 is rotated. It comes into contact with the upper side circumference, and is separated after the yarn end is sucked into the peg Ta by the suction pipe 12 and plays a role of preventing the wound yarn end Y from being released.

In the yarn feeder for a yarn spinning machine configured as described above, when the rod of the actuator 9 is extended, the lever 6 is rotated and the spring 7 is pulled to rotate the levers 4 and 5. Then, the suction mouth 1 to which it is fixed also rotates, the opening 1a contacts the outer circumference of the yarn layer of the cone package P, and the rotation of the levers 4 and 5 is stopped. At this time, the plate body 3 supported by the suction mouth opening portion 1a rotates, and the edge portion 3a thereof comes into contact with the cone package P according to the inclination angle of the outer circumference of the yarn layer. The lever 6 continues to rotate until the rod of the actuator 9 is fully extended, while the spring 7 is extended. After that, the rod of the cradle lifter 8 is extended, the lever 5 is slightly rotated in the opposite direction, and a gap of several millimeters is opened between the outer periphery of the yarn layer of the cone package P and the suction mouth 1. Then, when the cone roller P is rotated in the yarn unwinding direction by the driving roller 10 and the suction mouse 1 sucks air, the yarn Y is sufficiently sucked through the opening 1a, and then the suction mouth 1 returns to its original state. Return to position. Then, the thread shifting lever 11 rescues the thread Y stretched between the cone package P and the suction mouth 1 and stops at the position indicated by the alternate long and short dash line, and the drive roller 10 rotates the cone package P in the thread winding direction. Then, the top bunch is wound around the upper part of the peg, the yarn pulling lever 11 rises to the position indicated by the chain double-dashed line, the cutter 11a cuts the yarn, and the suction pipe 12 sucks air. Be sucked.

[0015]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

That is, the yarn end can be surely ejected even for the cone packages having different inclination angles on the outer periphery of the yarn layer, and even when the target yarn is a fine count. In addition, the air suction force of the suction mouth can be made smaller than that of the conventional one, resulting in energy saving.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a yarn feeder for a yarn spinning machine according to the present invention.

FIG. 2 is a perspective view of the vicinity of a suction mouth opening used in the yarn feeder of the present invention.

FIG. 3 is a front view for explaining the movement of the yarn pulling lever of the yarn feeder of the present invention.

FIG. 4 is a front view of a conventional yarn feeder for a yarn spinning machine.

[Explanation of symbols]

 1 Suction Mouse 1a Opening 3 Plate 4 Lever 5 Lever 6 Lever 7 Spring 8 Actuator 9 Actuator 12 Suction Pipe 13 Head Presser 10 Drive Roller 11 Threading Lever P Cone Package T Tray Ta Tray Peg

Claims (1)

[Scope of utility model registration request] 1. A suction mouth having an opening facing the axial direction of the cone, a plate body swingably supported so that the edge faces the opening, and the suction mouth opening is at the exit position. A yarn feeder for a yarn spinning machine, which comprises a mechanism for bringing the cone into contact with the outer periphery of the yarn layer and then slightly retracting the cone.