JPH0219211B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn feeding twisting device that unwinds yarn from a yarn feeding package while imparting a predetermined number of twists to the yarn, and in particular, the present invention relates to a yarn feeding twisting device that unwinds yarn from a yarn feeding package while imparting a predetermined number of twists to the yarn. It is applied to yarn feeding devices that require yarn feeding.

Conventional yarn twisting devices for yarn feeding are known as flyer-type up twisters and double twisters, but in both cases, the number of twists must be kept strictly constant because the additional value of unwinding and twisting differs depending on the diameter of the yarn feeding package. It was also difficult to maintain the desired number of twists from a non-twisted state using the same device. For example, in a conventional double twister, the yarn of a yarn supply package housed in a basket rotatably supported on a hollow spindle is unwound in the axial direction of the yarn supply package via a flyer attached to the tip of the spindle. The thread is passed through the core of the package via a hollow spindle, and is drawn out while ballooning the outer periphery of the package, and the number of twists of the thread is twice the number of ballooning, and the thread is unwound from the package. The unraveling twist that occurs when

Moreover, since the yarn withdrawal speed is always held constant, the number of unwinding twists per unit time differs depending on whether the diameter of the yarn supply package is large or small, causing fluctuations in the twists.

The present invention enables untwisting in a non-twisted state and setting an arbitrary number of twists to provide accurate twisting using the same device.
The object of the present invention is to provide a yarn feeding yarn twisting device capable of unwinding the yarn, and the present invention includes a spindle having a hollow hole opening at the upper end and the side surface of the middle portion and pivotally supported on the machine base;
A cylindrical basket that rotates relative to the spindle around the spindle and has a plurality of feed rollers on the outer periphery parallel to the axis, and prevents rotation of the basket while allowing the thread to swing around the basket. A locking mechanism is provided, and a brake device is rotatably supported concentrically at the center of the inside of the basket to control its free rotation. A rotating bobbin holder for the yarn feeding package cage, and a traverse fulcrum roller pivotally supported on the outer periphery of the basket so as to turn the yarn pulled out from the package cage and placed along the outer surface of the feed roller on the outer periphery of the basket upward in the axial direction. , a pick-up roller pivotally supported on the upper part of the basket so as to guide the yarn passing through the traverse fulcrum roller to a twist base roller pivotally supported on the basket near the upper end of the hollow hole of the spindle; There is a twisting roller that is supported by a shaft and turns the threads connected to the hollow hole in the radial direction, and a spindle is provided below the basket, which is integrated with the spindle. It consists of a flyer with a flyer roller pivotally supported at its tip that sends out the flyer while moving upward. The yarn from the yarn supply package, which rotates as the yarn is pulled out, is wound along the outer periphery of the basket on the outside and is pulled out in a direction perpendicular to the axis of the yarn supply package, after which the yarn is pulled out from a fixed point outside the basket. After the thread passes through the axis of the package cage by passing the thread through the hollow hole of the spindle from the top downward, it is pulled out radially from the axis again and pulled out while swinging around the package cage. There is no unraveling and twisting, and a constant twist can always be obtained, so the number of twists in the twisted yarn is exactly constant, and the twist does not shift even when tension is applied, so it is used for woven fabrics or as a reinforcing material by pulling it together. In addition, when used as an intermediate step in the yarn processing process, the yarns do not become entangled even when the yarns are combined during processing, making it extremely easy to separate the yarns. have

An example of an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 indicates a yarn twisting device rotatably supported on a bracket 3 of a machine frame 2, which is rotationally driven by a belt mechanism 4 from a driving mechanism, and a yarn feeding device housed in a basket 12 of the yarn twisting device 1. The thread Y drawn out from the package 20 is twisted and unwound, and is drawn upward by a take-up roll 6 through a thread guide 5 and sent out.

As shown in FIG. 2, the twisting device 1 includes a spindle 10 rotatably supported by a bracket 3 via a bearing 9, a basket 12 rotatably supported via a bearing 11, and a spindle 10.
A bobbin receiver 14 is rotatably supported via a bearing 13, and the spindle 10
A hollow hole 10a was provided in the upper half with the upper end opened to the outside, the lower end thereof was opened to the side surface of the spindle, and a twist stopper roller 16 was provided at the lower open end.
A disk-shaped flyer 12 is integrally formed in the intermediate portion of the spindle 10, and a flyer roller 18 is pivotally supported within a notch formed at one location on the outer peripheral edge of the flyer 12.

The basket 12 has a disc-shaped bottom plate 12a and an upper toric body 1.
2b are integrally connected by spokes 12c at a plurality of locations on the periphery to form a cylindrical basket shape with a bottom, and furthermore, an appropriate interval is provided on the outer periphery between the bottom plate 12a and the toric body 12b. A plurality of feed rollers 15 are arranged, and a fulcrum roller 19 is pivotally supported on one spoke 12c. The bobbin receiver 14 is rotatably supported inside the basket 12 concentrically therewith, and the bobbin 21 of the yarn supply package 20 is inserted into the central shaft cylinder 14a of the bobbin receiver 14. A brake device 24 is provided so as to prevent the bobbin receiver 14 from rotating unnecessarily by providing a brake shoe 22 springing with a spring 23 and pressing the shoe 22 against the periphery of the bottom plate of the bobbin receiver 14.

A cover 26 having a hinge 25 is provided on one side of the upper surface of the basket 12 so as to be able to be opened and closed with respect to the basket 12.
A through hole 27 is provided in the radial direction from the center, a twist base point roller 28 is rotatably supported at the center, and a pick-up roller 29 is rotatably supported at the outer end of the through hole 27. The cover 26
The yarn feeding package 20 is attached and detached by opening the yarn feeding package 20. As shown in FIG. 4, an eccentric cam 30 is fixed to the base of the spindle 10, and a restraining piece 32 is fitted and engaged with the cage 12 via a bearing 31 attached to the outer periphery of the eccentric cam 30. The stopper piece 32 is externally fitted to the bearing 31 in the elongated hole 33, so that the stopper piece 32 moves as the eccentric cam 30 rotates.
Adjustment pieces 35, 35 provided on the bracket 3 are inserted through sliding levers 34, 34 protruding from both sides so as to move the bracket 3 from side to side in FIG.

Therefore, the stopper piece 32 moves left and right with the rotation of the spindle 10, but its direction is always the same as the direction from the center of the flyer 17 toward the flyer roller 18, and in this position, each sliding lever 34 , 34 at the tip of the claw piece 36,
36 face notches 37 and 37 provided on the periphery of the bottom plate 12a of the basket 12, respectively, and the eccentric movement of the stopper piece 32 toward the flyer roller 18 side by the eccentric cam 30 causes the claw piece 36 on the same side to escape from the notch 37. The claw piece 36 on the other side fits into the notch 37 to form a gap with the outer periphery of the basket 12, and the spindle 10
When the eccentric cam 30 rotates 180 degrees from this position, the stopper piece 32 slides to the left in FIG. 4, and at this time the flyer roller 18 also moves to the left. Then, the claw piece 36 on the left side is removed from the notch 37 and separated from the basket 12 to form a gap, and at the same time, the claw piece 36 on the other side is fitted into the notch 37 and engaged with the basket 12. The rotation of is now stopped.

Next, the operation of this device will be explained.

The spindle 10 rotates in the direction of the arrow in FIG.
The bobbin receiver 14 rotatably supported by this also rotates, but its rotation is controlled by braking by the brake shoe 23 of the brake device 24, so that the yarn is pulled out from the yarn feeding pobbin 20 attached to the bobbin receiver 14. The bobbin receiver 14 rotates according to the pulling force of the thread Y. Therefore, the unwinding tension of the yarn Y is controlled by the brake device 24.
It can be set more or less by adjusting.

The cage 12 rotatably supported on the spindle 10 is prevented from rotating because the claw 36 is inserted into one of two notches 37 provided on the periphery of the bottom plate 12a.

Yarn Y pulled out laterally from the yarn supply package 20
A plurality of feed rollers 15 provided around the periphery of the basket 12
As the yarn is wound around the outside of the basket 12, the diameter of the package becomes smaller as the yarn is pulled out, and the path of the yarn being pulled out changes from Y to Y' as shown in FIG. By winding the yarn around a plurality of feed rollers 15 provided on the outer periphery of the basket 12, a sufficient length can be provided between the point at which the yarn leaves the package surface and the traversing fulcrum roller 19, so that the yarn can be easily extended from the package surface. Since the angle between the yarn and the cylindrical surface of the package cage is large and does not change, unevenness in the rotation of the package cage due to yarn unwinding is reduced, and therefore, there is little change in the unwinding tension of the yarn. The yarn to be unwound gradually reduces the traverse amplitude on the feed roller 15, reaches the traverse fulcrum roller 19, changes its direction upward, and then passes from the pick-up roller 29 to the twist base roller 28 to the hollow hole of the spindle 10. 10a, from the twist stopper roller 16 at the bottom of the hollow hole 10a, through the flyer roller 18 outside the flyer 17, upward, and from the yarn guide 5 to the take-up roller 6.

Therefore, the yarn Y is attached to the fixed yarn base point roller 28.
The yarn Y between the flyer roller 18 and the yarn guide 5 rotates together with the spindle 10. The basket 12 is moved by the flyer roller 18.
is swung around while ballooning around the outer periphery of the spindle 10, and one twist is applied for each rotation of the spindle 10. During this twisting, the yarn Y is
During this passage, the eccentric cam 30 operates to separate the claw 36 from the notch 37, thereby separating the bottom plate 12a of the basket 12 and the claw 3.
Since a gap is formed between the thread Y and the thread Y, the passage of the thread Y is not hindered, and at this time, the claw piece 36 on the other side
7, so it does not interfere with preventing the rotation of the basket 12.

Note that since the take-up roller 6 is actively driven to pull out the yarn Y at a constant speed, the twisting operation is always performed under the condition of a constant number of rotations.

As described above, according to the present invention, it is possible to apply two twists per rotation of the spindle, and the number of twists applied to the yarn does not change depending on the diameter of the yarn supply package, and accurate twist can be provided. As shown by the temporary line Y'' in Figure 1, it is untwisted when pulled out directly from the pick-up roller through the yarn guide and the take-up roller without ballooning by a flyer. Since the yarn can be pulled out in an untwisted state or in a twisted state with a predetermined number of twists by the same device, it is extremely useful as a yarn twisting device for yarn feeding.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the device of the present invention, Fig. 2 is a cutaway side view of the main part, Fig. 3 is a plan view thereof,
FIG. 4 is a sectional view taken along the line -- in FIG. 2. 2...Machine base, 10...Spindle, 10a...Center hole, 12...Bag, 14...Bobbin receiver, 15...Feed roller, 16...Twisting roller, 17...Flyer, 18...Fly roller, 19...Travel fulcrum roller , 20... Yarn feeding package, 24... Brake device, 28... Yarn base point roller, 29... Pick up roller, 30, 34, 36, 37... Locking device, Y... Yarn.

Claims (1)

[Claims] 1. Has a hollow hole opening at the upper end and the side surface of the middle part,
A spindle that is pivotally supported on a machine base, a cylindrical basket that rotates relative to the spindle around the spindle and has a plurality of feed rollers on the outer periphery that are parallel to the axis, and a yarn whirling around the basket. A locking mechanism that restrains the rotation of the basket while allowing the rotation of the basket, and a brake device that is rotatably supported concentrically at the center of the interior of the basket and controls its free rotation, and the yarn feeder is held by this. A bobbin holder for the yarn supply package that rotates when the yarn is pulled out from the package cage, and an outer peripheral edge of the basket that rotates the yarn pulled out from the package cage and turned upward in the axial direction along the outer surface of the feed roller on the outer periphery of the basket. a traverse fulcrum roller pivotally supported on the traverse fulcrum roller; and a pick-up propeller pivotally supported on the upper part of the basket so as to guide the yarn passing through the traverse fulcrum roller to a twist base roller pivotally supported on the basket near the upper end of the hollow hole of the spindle. , a twisting roller that is pivotally supported by the opening on the lower side of the hollow hole and that turns the yarn that has passed through the hollow hole in the radial direction; A yarn feeding twisting device consisting of a flyer with a flyer roller pivotally supported at the tip, which sends out the yarn upward while swinging it around on the outside of the basket.