JPH0594557U - Power transmission structure to driven parts - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a power transmission structure to a driven part which can directly take power from a coupling part of a drive shaft. A cylindrical cover is fitted and fixed to a coupling portion of a drive shaft, and power is transmitted to a driven portion via a friction roller that is in contact with the cylindrical cover.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power transmission structure that transmits power from a drive shaft to a driven part.

[0002]

[Prior Art]

 When transmitting power from the drive shaft to the driven part via the friction roller, there are cases where power can be taken only from the coupling part of the drive shaft in space.

However, since the coupling screw portion of the coupling is recessed, it was difficult to directly press the friction roller against the coupling and transmit the power to the driven portion.

[0004]

[Problems to be solved by the device]

 An object of the present invention is to obtain a power transmission structure from a coupling portion of a drive shaft to a driven part which can directly take power.

[0005]

[Means for Solving the Problems]

 A cylindrical cover is fitted and fixed to the coupling portion of the drive shaft, and power is transmitted to the driven portion via the friction roller in contact with the cylindrical cover.

[0006]

[Action]

 By covering the coupling part of the drive shaft and fitting the cylindrical cover, the recess of the fastening screw part of the coupling part is covered, the outer circumference of the cylindrical cover is used as a pulley to contact the friction roller, and power is transmitted to the driven part. ..

[0007]

EXAMPLE An example of the present invention will be described below with reference to the drawings using a spinning machine equipped with a fluff suppressing device H as an example, but the present invention is not limited to this.

As shown in FIG. 1, a spinning device equipped with a fluff suppressing device H is a draft consisting of a back roller pair 1a, a third roller pair 1b, a second roller pair 1c mounted with an apron band, and a front roller pair 1d. The device 1, the air spinning nozzle 2 that twists the sliver S drafted by the draft device 1, the delivery roller 3 that sends out the formed yarn Y, and the fluff suppressing device H and the fluff located downstream thereof. It comprises a winding device 4 for winding the yarn Y sent out from the restraining device H, 5 is a dust collector provided with a suction pipe 6, 7 is a slack tube, 8 is a slab catcher, and 9 is a traverse device of the winding device 4. Is shown. 10 is a take-up roller.

The air-spinning nozzle 2 is composed of a first nozzle and a second nozzle that cause swirl flows in opposite directions to act on the yarn. The yarn exiting from the air-spinning nozzle 2 is basically composed of core fibers (core yarns) that are aligned substantially parallel to each other and wound fibers that are spirally wound around the core fibers.

However, in the present invention, as described above, the fluff suppressing device H is provided on the yarn path on the downstream side of the delivery roller 3 of the yarn Y supplied from the air spinning nozzle 2, and the fluff suppressing device H As shown in FIGS. 2 and 3, a driving roller 13 supported by a driving shaft 11 and having a rubber coating 12 on the surface integral with the driving shaft 11, and a twisting device mounted between a pair of rollers 14 a and 14 b. The twisting belt 15 is placed on the driving roller 13 with an intersection angle θ of 55 ± 10 degrees with respect to the traveling direction of the yarn Y.

The coupling portion 16 of the drive shaft 11 that is positively rotated by a drive device (not shown) is provided with a friction roller 18 that rotates in contact with a cylindrical cover 17 that is fitted and fixed to the coupling portion 16. The bevel gear 20 provided on the rotary shaft 19 of the friction roller 18 and the bevel gear 22 provided on the rotary shaft 21 of the roller 14b of the twisting belt 15 mesh with each other to drive the drive roller. The rotation of the shaft 11 is transmitted to the twisting belt 15.

As shown in FIG. 3, a rotary shaft 19 having a friction roller 18 at one end and a bevel gear 20 at the other end, and a roller 14 b for mounting the twisting belt 15 at one end are engaged with the bevel gear 20 at the other end. The rotating shaft 21 provided with a matching bevel gear 22 is rotatably supported by a gear box 25 via bearings 23, 24, and the other roller 14a on which the twisting belt 15 is mounted is provided with a spring 26. By the urging force of the twisting belt 15 and the tension of the twisting belt 15, the bearing 30 is rotatably supported by the bearing 30 screwed to the sliding member 29 that slides in the groove 28 of the supporting member 27. Then, depending on the contact pressure with the drive roller 13 and the tension of the twisting belt 15, the tension of the twisting belt 15 is automatically adjusted by moving together with the sliding member 29 in the left-right direction. Further, the supporting member 27 is fixed to the frame 32 of the machine base together with the gear box 25 via the member 31.

However, in the spinning device described above, since the spinning units shown in FIG. 1 are arranged in parallel with each other in a large number of spindles, if the coupling portion 16 is to be avoided, the intervals between the units will be increased. Therefore, when a device having a drive mechanism such as the fluff suppressing device H is provided in such a narrow portion, power must be taken from the coupling portion 16 of the drive shaft 11. However, since the coupling portion 16 of the drive shaft 11 has a recessed portion of the fastening screw 33 as shown in FIG. 4, the friction roller 18 cannot directly contact the coupling portion 16 to transmit power. .. Therefore, in the present invention, for example, an aluminum cylindrical cover 17 having a rubber coating on its surface is fitted and fixed to the coupling portion 16 as shown in FIG. 5, and a friction roller 18 is brought into contact with the smooth outer peripheral surface thereof. It is configured to do.

As a result, the yarn Y being spun through the delivery roller 3 is between the driving roller 13 and the twisting belt 15 which is driven together with the driving roller 13 via the friction roller 18 and the bevel gears 20, 22. The fluff on the yarn Y that has been introduced and given a false twist and a rubbing action winds around the core yarn, forms a fluff-free yarn Y, and is wound while traversing through the driver guide 9 of the winding device 5.

When the portion where the friction roller 18 is located deviates from the position of the coupling portion 16 of the drive shaft 11, it is equal to the outer diameter of the cylindrical cover 17 fitted in the coupling portion 16 as shown in FIG. A roller 34 having an outer diameter is provided on the shaft 11, and the friction roller 18 is brought into contact with the roller 34.

Further, as shown in FIG. 2, the twisting belt 15 is provided so as to incline from the upper left side to the lower right side with respect to the driving roller 13, which is the case of Z twisting and S In the case of twisting, it is installed by sloping from the upper right to the lower left. Further, since a force in the thrust direction acts on the yarn Y, a yarn guide 35 is provided on the yarn Y introduction side as shown in FIG. The yarn guide 35 may have any shape such as a wire shape or a plate shape, and it is preferable that the yarn guide 35 is made of ceramic or the like and has high abrasion resistance.

[0017]

[Effect of the device]

 As described in detail above, according to the present invention, the cylindrical cover is fitted and fixed to the coupling portion of the drive shaft, and the power is transmitted to the driven portion via the friction roller that is in contact with the cylindrical cover. Even in a space-constrained part where power must be taken from the coupling, it is possible to easily transmit the rotation of the drive shaft to the driven part, resulting in a compact device. Was completed.

[Brief description of drawings]

FIG. 1 is a perspective view of a spinning device equipped with a power transmission structure according to the present invention.

FIG. 2 is a schematic plan view showing an essential part of a fluff suppressing device provided with the power transmission structure of the present invention.

FIG. 3 is a partial cross-sectional plan view of a power transmission mechanism.

FIG. 4 is a perspective view showing a relationship between a coupling portion of a drive roller and a cylindrical cover.

FIG. 5 is a perspective view showing a state where a cylindrical cover is fitted and fixed to a coupling portion of a drive roller.

[Explanation of symbols]

 H fluff control device Y yarn 1 draft device 2 air spinning nozzle 3 delivery roller 4 fluff suppressing device 5 winding device 11 drive shaft 13 drive roller 15 twisting belt 16 coupling portion 17 cylindrical cover 18 friction roller

Claims (1)

[Scope of utility model registration request] 1. A structure for transmitting power to a driven part, wherein a cylindrical cover is fitted and fixed to a coupling part of a drive shaft, and power is transmitted to the driven part via a friction roller in contact with the cylindrical cover.