JPH07316935A - Piecing apparatus of spinning frame - Google Patents

Abstract

PURPOSE:To provide a spinning frame capable of smoothly and surely performing a series of motions to guide a winding side thread end to a spinning part and piece at the spinning part and preventing the piecing miss. CONSTITUTION:This piecing apparatus is provided with a means for sucking a thread end wound into a package P, a means 16 for gripping the sucked end of the thread and transferring to a spinning part 3 and a means for restricting a thread guide at a position to deliver the thread end from the sucking means to the transfer means. The thread guide restriction means is composed of a pair of guides 141, 142 for restricting the thread guide placed at both sides of a thread end delivery position interposing the position between the guides. The thread end is guided toward the thread guide restriction means by a thread-guiding lever 143.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piecing device for splicing a cut yarn end in a spinning machine having a spinning portion for twisting by a swirling air flow.

[0002]

2. Description of the Related Art Conventionally, in a spinning machine utilizing a swirling air flow, when splicing yarns, an air splicer or the like is used for a winding-side yarn end unwound from a package and a spinning-side yarn end unwound from a spinning portion. In general, it is introduced into a piecing device to perform yarn splicing, but focusing on the similarity between the twist splicing mechanism by the air splicer and the twisting mechanism by the swirling air flow, the yarn end on the winding side is sucked. The fiber bundle that is newly supplied to the spinning unit by sucking and pulling it out by the means, gripping the drawn yarn end, transporting it to the spinning unit, disintegrating the yarn end, and restarting spinning A piecing device has been developed which is twisted together with the defibrated yarn end and pieces in the process of forming a spun yarn.

In such a piecing device, in order to reliably perform piecing, it is essential to accurately guide the winding-side yarn end to the spinning section. In particular, the yarn end pulled out by the suction means is When handing over to the gripping part of the transfer means, if the delivery is uncertain, or if the holding state is not uniform, the yarn end is not transferred to the spinning part, or the position of the transferred yarn end is not constant, and piecing It caused a mistake.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the present invention smoothly guides the winding side yarn end to the spinning section to smoothly perform a piecing operation in the spinning section.
Moreover, it is an object of the present invention to provide a piecing device for a spinning machine, which can be surely performed and can prevent piecing mistakes.

[0005]

Means for Solving the Problem A means for sucking a yarn end wound in a package, a means for gripping the sucked yarn end and transferring it to a spinning section, and a suction means to a transferring means.
A means for regulating the yarn path is provided at a position where the yarn end is delivered. Further, the yarn path regulation means is two yarn path regulation guides arranged on both sides of the yarn end passing position. Furthermore,
A yarn guide lever for guiding the yarn end toward the yarn path regulating means is provided.

[0006]

The suction means sucks and pulls out the cut yarn end wound in the package, and the yarn path regulating means regulates the yarn path to a predetermined position where the yarn end is transferred to the transfer means. The yarn end regulated at the predetermined position is gripped and transferred to the spinning section.

Further, the two yarn guide regulating guides provided as the yarn guide regulating means are concerned with the traverse position of the yarn pulled out from the package and the suction position of the suction means at the delivery position between them. Instead, it is held constant, so that the angle of the yarn end gripped by the transfer means becomes constant.
Further, the yarn guide lever pulls and guides the yarn end toward the yarn path restricting means.

[0008]

Embodiments will be described with reference to the drawings.

1 and 2 show a spinning machine 1 having a piecing device 11 according to an embodiment of the present invention. In the figure spinning machine 1
Is a back roller pair 21, a third roller pair 22, a second roller pair 23 on which an apron belt is mounted, and a front roller pair 24. The draft device 2, the nozzle member 31, and the nozzle member 31 are separable from each other. A spinning unit 3 including a spindle member 32, a yarn guide member 4, a yarn delivery device 5 including an delivery roller 51 and a nip roller 52, an air trap 6, a yarn cutting device 7, a yarn clearer 8 for detecting yarn defects and yarn breakage, and winding. Taker 9
A plurality of spinning units 1u are provided in series from the upstream side of the yarn path, and only one unit is shown in the drawing.

FIG. 3 is a sectional view showing the spinning section 3. In the figure, the spindle member 32 has a stepped cylindrical shape in which a flange portion 321 is formed in a joint portion with a nozzle member,
A hollow spindle 33 is supported on its axis. The hollow spindle 33 may be driven and rotated by an appropriate means such as an air turbine, a motor drive, or a belt drive, or may be fixed to the spindle member 32. The spindle member 32 is supported by the tip of a support arm 342 fixed to the two rods 341 and 341 of the cylinder 34 via an automatic centering and pressurizing mechanism 343 as follows.

That is, a circular hole 344 at the tip of the support arm 342.
The spindle member 32, which loosely penetrates, is softly supported by screwing three bolts 322, which loosely penetrate into the small circular holes 345 formed at three locations around the circular hole 344, to the flange portion 321 via the spring 323. Has been done. A cylindrical projection 324 having a diameter smaller than that of the flange 321 is formed on the front surface of the flange 321. The peripheral edge of the cylindrical projection 324 is chamfered slightly in an arc shape. The cylindrical projection 324 is adapted to fit into the opening 311 of the hollow cylindrical nozzle member 31 when the spindle member 32 is joined to the nozzle member 31. In addition, the peripheral portion of the opening 311 is chamfered to form the inner conical surface of the introducing portion 31.
Forming 2.

Self-centering pressurizing mechanism 3 constructed as described above.
Reference numeral 43 designates the spindle member 32 separated from the nozzle member 31 as indicated by 32 'in FIG.
Even when a parallel error or an angle error occurs between the axes of the nozzle member 31 when the nozzle member 31 is shortened and joined to the nozzle member 31, the cylindrical protrusion 324 of the spindle member 32 causes the inner conical surface of the lead-in portion 312 to move. The position of the spindle member 32 is corrected by being guided to, and the spindle member 32 is always fitted in the opening portion 311 with its axis aligned.

As a result, there is an allowable range for setting the mounting position of the cylinder 34 and the stroke, which facilitates the assembly of the nozzle member 31 and the spindle member 32.

A stepped cylindrical nozzle 35 is supported at the center of the nozzle member 31, and the rear end opening 3 of the nozzle 35 is supported.
51 is a cylindrical hollow chamber 31 connected to the opening 311.
3, the hollow spindle 33 is located in the nozzle 35. A plurality of compressed air injection holes 352 are formed in the nozzle 35 in the tangential direction of the inner peripheral wall toward the tapered conical tip portion 332 of the hollow spindle 33 and obliquely with respect to the axial direction of the nozzle 35. There is.

A fiber bundle introducing member 36 is fitted on the introduction side of the nozzle 35. As shown in FIG. 4, the fiber bundle introducing member 36 is provided with a fiber bundle guide member 362 in a fiber bundle introducing passage 361. In the illustrated example, the fiber bundle guide member 362 has a thin needle shape provided from the side of the introduction port 37 toward the inlet of the hollow spindle 33.

The lower portion of the peripheral side wall of the hollow chamber 313 of the nozzle member 31 is an elongated hole-shaped opening 314. The opening 314 connects the inside of the hollow chamber 313 and the support arm 39 of the nozzle member 31. It communicates with the inside of the dust collector 391 that also serves as a doublet.

The spinning process in the spinning section 3 configured as described above is as follows. That is, as shown in FIG. 4, the sliver S drafted by the draft device 2 and sent out from the front roller pair 24 in a flatly spread state is a fiber generated by the compressed air injection from the compressed air injection hole 352 into the nozzle 35. It is introduced into the fiber bundle introduction path 361 through the introduction port 37 by the suction airflow in the introduction port 37 of the bundle introduction member 36, and is further fed along the periphery of the fiber bundle guide member 362 and the threading hole 331 of the hollow spindle 33. Will be introduced in.

At this time, the rear end of the fiber forming the sliver S passes through the grip of the front roller pair 24 and then opens in the nozzle 35 while being swirled around the hollow spindle 33 generated by the compressed air jet. The swirling airflow that has reached the inside of the hollow 313 through the portion 351 and is diffused is separated from the fiber bundle, and is wound around the tip end portion 332 of the hollow spindle 33 along the swirling direction of the airflow while passing through the hollow spindle 33. The spun yarn Y is formed by false twisting by being drawn into the yarn hole 331.

In the spun yarn Y thus obtained, the fiber bundle guide member 362 prevents the false twist from being transmitted to the upstream side, and the fiber bundle guide member 362 is located at the center of the flow of the fiber bundle. To prevent the formation of core fibers,
It has a true twist shape with almost no core fibers.

The spinning machine 1 constructed as described above has a machine base 1
01 provided along the entire length in the longitudinal direction of 01, and a work carriage 10 that reciprocates between the spinning units 1u along the tracks 102 and 103.
The piecing device 11 is attached to the above, and the piecing device 11 will be described below.

The piecing device 11 includes a package pushing member 121 that separates the package 1P of the spinning unit 1u to be piecing from the friction roller 91 of the winding device 9, a grip lever 12 that fixes the cradle 92 at the separated position, and a package. Package P rewinding device 1 including reverse roller 123 that rotates P in the reverse direction
2, a suction mouth 13 which sucks and pulls out the cut yarn end wound in the package P, a yarn end guide device 14 which guides the yarn end pulled out from the package P to a predetermined delivery position, and a yarn which is guided to the position The yarn finger 15 for gripping the end is provided, and the transfer device 16 for transferring the gripped yarn end to the spinning unit 3, the air sucker device 17 for threading the transferred yarn end to the spinning unit 3, and the unthreaded yarn end It is composed of a yarn end disentanglement tube 18 and the like to be fined.

As shown in FIG. 1 and FIGS. 5 to 10, the yarn end guide device 14 is arranged in series with the yarn path above and below the yarn finger 15 delivery position of the yarn Y in series. Yarn guide regulating guides 141, 142, and a yarn guide lever 143 arranged on the downstream side of the yarn guides of the yarn guide regulating guides 141, 142 and guiding the yarn toward their guide positions.
Consists of. They are provided on the tip side, the center, and the base end side of a support arm 144 swingably provided on a bracket 105 fixed to the frame 104 of the work carriage 10. The support arm 144 is cammed via a rod (not shown). Group 10
One of the six cam discs is connected to the follower of the cam disc, and thereby swings in the front-rear direction at a predetermined timing.

As shown in FIG. 5, the yarn guide guide 141 has a substantially V-shaped guide plate 141a in which a guide groove 141g is formed in the center, and a guide plate 141a above the guide plate 141a only on the left side of the guide groove 141g. Auxiliary guide plate 141b provided
Consists of. The tip portion 141e of the auxiliary guide plate 141b extends beyond the tip portion of the guide plate 141a and extends downward in an arc shape. This is because the suction center of the suction mouth 13 is slightly on the left side, and in order to reliably capture the yarn Y pulled out to the left side by the suction mouth 13,
The auxiliary guide plate 141b is designed to be as close as possible to the yarn path in a range that does not intersect the turning locus 13a of the suction mouth 13 shown in FIG.

The guide groove 1 is provided between the guide plate 141a and the auxiliary guide plate 141b of the yarn guide regulation guide 141.
A cutter 145 for cutting the yarn Y guided by 41 g is provided. The cutter 145 includes the fixed blade 145 a and the movable blade 1.
45b, and the movable blade 145b is an air cylinder 1
It is possible to rotate around the shaft 145d by expanding and contracting the rod of 45c.

The yarn guide guide 142 is the guide plate 14 described above.
The guide plate 142a is substantially parallel to 1a and has a substantially same shape. A guide groove 142g is formed in the center of the guide plate 142a.

As shown in FIGS. 5 to 7, the thread guide lever 143 includes a pair of symmetrical scissor levers 143a and 143.
b, they are rotatably supported in a horizontal plane about a shaft 144a provided on a bracket 144b fixed to a support arm 144, and each lever 143 is provided.
Both ends of the spring 144s supported by the shaft 144a are engaged with the elongated holes formed in the holes a and 143b.
The pair of levers 143a and 143b is always urged by 44s in the direction in which the tips open.

The pair of levers 143a, 14a
Rollers 146a and 146b are pivotally supported at the other end of 3b,
In addition, the roller 14 that accompanies the swing of the support arm 144
A pair of left and right cams 147a and 147b, which are curved in an arc shape along the movement loci of the rollers 6a and 146b and contact the rollers 146a and 146b, are fixed to the bracket 102 at their integrally formed base ends. ing.

The pair of cams 147a and 147b are arranged so that the distance between them gradually narrows from the base end side where the distance is wide and the tip end side, as shown in FIGS. Is formed in. As a result, when the support arm 144 is positioned rearward as shown in FIG. 9, the thread guide lever 143 is sufficiently expanded to both sides by the bias of the spring 144s as shown in FIG. As the arm 144 swings forward as shown in FIGS. 10 and 5, the rollers 146a and 146b are guided by the cams 147a and 147b and come close to each other.
Along with this, the levers 143a, 1 of the thread guide lever 143 are
43b pivots from the center and approaches each other.

Next, the transfer device 16 equipped with the yarn fingers 15 will be described with reference to FIGS. 1, 2 and 8. The transfer device 16 is provided with a yarn finger 15, the yarn finger 15 at the tip, and a swiveling member 162 at the base end.
It comprises a revolving arm 161 supported by the and a driving means for them.

The revolving member 162 has a substantially cylindrical shape, and also serves as a gear case for a pair of bevel gears 113 and 114, which will be described later. In the two hollow shafts 163 and 164, both ends of which have the same shaft center. It is supported by brackets 107 and 108 fixed to the work carriage 10 so as to be rotatable and axially slidable.

Further, at the base end of one hollow shaft 163,
A gear 165 is provided coaxially, and the gear 165 is used for the work carriage 1
As shown in FIG. 2, the segment gear 166 meshes with a segment gear 166 that is rotatably supported by the rod crank rod 168 that serves as a follower of one of the cam discs of the cam group 106. They are connected at 167. If the bell crank 168 swings at a predetermined timing as the cam group 106 rotates, the rod 167 causes the segment gear 166 to rotate, and the gear 165 meshing with the segment gear 166 also rotates to make a turn. The member 162 and the revolving arm 161 reciprocally revolve. Incidentally, as shown in FIG. 2, the revolving arm 161 revolves upward and the segment gear 16 when the yarn finger 15 is positioned on the yarn path on the downstream side of the spinning section 3.
A damper 169 that blocks and buffers unnecessary swing of the segment gear 166 is provided at the end of the rotation of 6 and the damper 169 is fixed to the frame of the work carriage 10 by a bracket 109.

Further, the rod 111 of the cylinder 110 is inserted into one hollow shaft 164, and the tip end of the rod 111 is inside the turning member 162.
2 through a thrust bearing (not shown). Then, the cylinder 110 is operated to operate the rod 11
When 1 is contracted, the revolving member 162 slides in the bottom direction, and the revolving arm 161 and the yarn finger 15 which are integral with the revolving member 162 can also move laterally. The gear 165 has a width that allows the sliding stroke.

Next, the yarn finger 15 and its driving means will be described with reference to FIGS.

The yarn finger 15 is a thread fixed to a drive shaft 153a, which is rotatably and cantilevered laterally of a gear box 152 supported by a supporting member 151 at the tip of a rotating arm 161 of a transfer device 16. Feed roller 15
3, a finger member 154 rotatably provided on the yarn feeding roller drive shaft 153a, a movable finger member 155 swingably supported by the finger member 154, and a nip roller rotatably provided on the movable finger member 155. It is mainly composed of 156.

A rod 158 of a cylinder 157 fixed to the finger member 154 is connected to the movable finger member 155. When the rod 158 is expanded and contracted by the operation of the cylinder 157, the movable finger member 1 is moved.
55 swings and the nip roller 156 moves the yarn feed roller 15
The thread can be gripped between them by contacting and separating them.
The peripheral surface of the yarn feeding roller 153 is covered with urethane rubber or the like in order to enhance the gripping force.

The cylinder 157 is a cylinder 15 which is pivotally supported at the tip of the revolving arm 161.
L-shaped lever 16 fixed to the tip of rod 160 of No. 9
0a are connected to each other, and when the rod 160 is expanded and contracted by the operation of the cylinder 159, the yarn finger 15 pivots about the drive shaft 153a of the yarn feeding roller 153 about the gear box 152 and the pivot arm 161 by about 90 °. Move.

Further, the drive shaft 153 of the yarn feeding roller 153.
a is an accelerator wire 112 through a pair of bevel gears 152a and 152b provided inside the gear box 152.
Connected to. The accelerator wire 112 is inserted into the turning arm 161 to reach the turning member 162, and is connected to the bevel gear 113 rotatably supported inside the turning member 162. The bevel gear 11
The shaft 115 of the bevel gear 114 meshing with the shaft 3 is a hollow shaft 16
3, the shaft 115 is connected to the output shaft of the motor 117 via a shaft 116 having a square cross-section that slidably fits into a square hole formed in the shaft 115. Thus, when the motor 117 is driven, the output shaft of the motor 117 is rotated by the yarn finger 15 via the shaft 116, the shaft 115, the pair of bevel gears 114 and 113, the accelerator wire 112, and the pair of bevel gears 152a and 152b.
Of the yarn feeding roller drive shaft 153a, the yarn feeding roller 153 is driven to rotate in cooperation with the nip roller 156 in the pressure contact state of the nip roller 156, and the yarn Y gripped between them can be delivered. is there. At this time, the delivery amount of the yarn Y can be arbitrarily controlled by the rotation speed of the motor 117.

Next, the piecing process will be described based on the above embodiment.

When a yarn breakage occurs in a certain spinning unit 1u of the spinning machine 1 and the yarn clearer 8 detects this, or the yarn clearer 8 detects a yarn defect and a signal is sent from the yarn clearer 8 to the cutter. 7 operates to forcibly cut the yarn, the back roller pair 21 and the third roller pair 22 of the draft device 2 are stopped. In the latter case, the defective yarn from the third roller pair 22 to the cutter 7 is It is sucked into the air trap 6 and removed. At the same time, the cylinder 34 of the spinning unit 3 is actuated, the rod 341 is extended to separate the spindle member 32 from the nozzle member 31 as indicated by 32 'in FIG. 2, and air is injected into the nozzle member 31 for cleaning. . Then, in reverse to this, or after the operator removes the cause of the obstacle, the work carriage 10 stops at the spinning unit 1u, and the cutting yarn end wound into the package P is moved to the spinning unit 3 by the following operation. Lead.

First, as shown in FIG. 9, the package push-out member 121 protrudes to press the package P to separate it from the friction roller 91, and at the same time, the grip lever 12 is pressed.
2 is pressed against a cradle boss 94 that is integral with the cradle 92 to fix the cradle 92 at that position. Then, the reverse roller 123 presses against the package P to rotate the package P in the reverse direction, and while the package P is rotated in the reverse direction, the end of the cut yarn wound on the package P by the suction mouth 13 which is swung to the position 13 'in FIG. Is sucked and gripped, the suction mouth 13 is swung back to the original position, the yarn end Y is pulled out upward, and is guided to the front face of the yarn end guide device 14.

Then, as shown in FIG. 10, while the yarn end guide device 14 pivots forward, the yarn end Y is moved to the position shown in FIG.
The guide grooves 141g, 14 of the yarn path regulation guides 141, 142 are guided by the individual yarn path regulation guides 141, 142.
It is introduced into 2 g and positioned at a predetermined transfer position.
At this time, if the position of the yarn end Y in the package P is extremely deviated to one of the ends of the package P, the yarn end Y is guided only by the yarn guide regulating guides 141, 142. In some cases, it may be difficult to guide the yarn to the inside of 142g, but the yarn guide lever 143 forcibly pulls the yarn end Y toward the center by the above-described operation shown in FIGS. 142
It is reliably guided in g and is supported vertically with a certain thread path between them.

Subsequently, as shown by the two-dot chain line 16 'in FIG. 1, the transfer device 16 located on the side of the yarn end guide device 14 is
When the cylinder 110 is actuated, the yarn finger 15 moves to the left in FIG. 1, and the yarn finger 15 enters between the two yarn path regulation guides 141 and 142 of the yarn end guide device 14 and is guided by them. Hold the end Y. At this time, since the yarn end Y is vertically supported by forming a constant yarn path as described above, the yarn feeding roller 153 and the nip roller 156 of the yarn finger 15 always keep a constant angle (a constant angle) with respect to their axial direction. 90 °). After that, the cutter 145 of the yarn end guide device 14 operates to cut the grasped yarn end Y at a predetermined position, and the tip end side of the cut portion is sucked and removed by the suction mouth 13.

Next, the yarn finger 15 pivots about 90 ° around the drive shaft of the yarn feed roller 153 while holding the yarn end Y by the operation of the cylinder 159, and then the pivot arm 161 pivots upward. Thereby, as shown in FIG. 2, the yarn end Y is transferred between the yarn guide member 4 and the spindle member 32 ′ separated from the nozzle member 31. The nip roller 52 of the yarn feeding device 5 is separated from the delivery roller 51 by a mechanism (not shown) so that the yarn end Y is not fed.

In parallel with this, the nozzle member 3 of the spinning section 3
The air sucker device 17 is located on the introduction side of the spindle member 32 separated from 1. That is, the air sucker 17 swings the swing arm 171 to the position indicated by the chain double-dashed line in FIG.
By extending like 3 ', it enters between the nozzle member 31 and the spindle member 32.

Then, the air sucker 17 is fitted to the tip of the hollow spindle 33, and the motor 117 is operated while sucking the inside of the hollow spindle 33 to operate the yarn finger 1 via the accelerator wire 112.
5 to rotate the yarn feeding roller 153
If the yarn end Y grasped by the No. 3 and the nip roller 156 is fed out for a certain length, the yarn end Y will be moved to the air sucker device 17
The thread is passed through the hollow spindle 33 by the suction.

At this time, the yarn end Y is moved by the yarn feeding roller 15
Since it is gripped at right angles to the axial direction of 3, the yarn end Y is sent straight from the yarn feeding roller 153 toward the spindle member 32 on the upstream side, and the yarn end Y is securely fed into the hollow spindle 33. The length of the yarn end Y that is inhaled and delivered is always kept constant.

Next, after the suction of the air sucker 17 is stopped, the rod 173 of the air sucker 17 is shortened so that the inlet of the defibrating nozzle 18 is positioned below the tip of the hollow spindle 33, and the yarn end Y Is introduced into the defibrating nozzle 18 to untwist and defibrate.

After defibrating the yarn end Y, the air sucker device 17
Moves to the side of the work vehicle 10. Then, the yarn feeding roller 153 of the yarn finger 15 is rotated to further deliver the yarn Y of a constant length to the upstream side, while operating the cylinder 34 to shorten the rod 341 and move the spindle member 32 to move to the nozzle member 31. To join. After this, yarn finger 1
5 operates the cylinder 157 to move the movable finger member 1
After turning 55 to release the grip of the yarn Y, the transfer device 16
At the same time, it retreats to the side of the yarn path.

When spinning is restarted in such a state, the sliver S drafted by the drafting device 2 and introduced into the nozzle 35 through the fiber bundle introducing member 36 is twisted together with the defibrated yarn end Y. By being done, piecing is done together.

When the spinning operation is restarted, the nip roller 52 of the yarn delivery device 5 is pressed against the delivery roller 51 to resume the delivery of the piecing spun yarn Y, and the package P is pressed against the friction roller 91 of the winding device 9 and wound. Package P with a large moment of inertia
Slips with the friction roller 91 and causes yarn slack on the downstream side of the yarn delivery device 5, but the yarn slack is sucked by the air trap 6 located immediately after the yarn delivery device 5, and the winding tension is increased. Will be compensated.

[0051]

Since the piecing device of the spinning machine of the present invention is configured as described above, it has the following effects.

Means for sucking the yarn end caught in the package, means for gripping the sucked yarn end and transferring it to the spinning section,
Also, since the means for regulating the yarn path is provided at the position where the transfer means is disconnected from the suction means and the yarn end is delivered, the position of the yarn end pulled out by the suction means is always fixed at a predetermined delivery position. Therefore, it is possible to reliably deliver the yarn end to the transfer means, and prevent piecing mistakes resulting from this.

Since the yarn path regulating means is two yarn path regulating guides arranged on both sides of the yarn end passing position, the yarn end is transferred between the two yarn path regulating guides. The angle of the yarn end gripped by the means becomes constant, the yarn end can be surely introduced into the spinning section, and piecing mistakes resulting from this can be prevented.

Since the yarn guide lever for guiding the yarn end toward the yarn guide regulating means is provided, it is possible to prevent a mistake in introducing the yarn end into the yarn guide regulating guide, and to prevent a piecing mistake due to this. Is possible.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a spinning machine including a piecing device according to an embodiment of the present invention.

FIG. 2 is a side view showing a spinning machine equipped with a piecing device according to an embodiment of the present invention.

FIG. 3 is a side sectional view showing a spinning section of a spinning machine equipped with a piecing device according to an embodiment of the present invention.

FIG. 4 is an enlarged sectional view of a main part of a spinning unit.

FIG. 5 is a perspective view showing how a yarn end is delivered from a yarn end guide device to a yarn finger.

FIG. 6 is a plan view showing a thread guide lever.

FIG. 7 is a plan view showing the operation of the thread guide lever.

FIG. 8 is a plan sectional view showing a yarn finger.

FIG. 9 is a side view showing the operation of the package rewinding device and the suction mouth.

FIG. 10 is a side view showing the operation of the yarn end guide device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spinning machine 2 Drafting device 3 Spinning part 4 Thread guide member 9 Winding device 10 Work trolley 11 Pcing device 12 Package rewinding device 13 Suction mouse 14 Yarn end guiding device 15 Yarn finger 16 Transfer device 17 Air sucker device 18 Disentanglement nozzle 31 Nozzle member 32 Spindle member 33 Hollow spindle 141,142 Yarn guide guide 143 Yarn guide lever 144 Support arm 145 Cutter 146a, 146b Roller 147a, 147b Cam 153 Yarn feed roller S Sliver Y Yarn (cutting yarn end) P package

Claims (3)

[Claims] 1. A device for sucking a yarn end wound in a package, a device for gripping the sucked yarn end and transferring it to a spinning section, and a yarn at a position for delivering the yarn end from the suction device to the transfer device. A piecing device for a spinning machine, which is provided with means for regulating a road. 2. The piecing device for a spinning machine according to claim 1, wherein the yarn path regulation means is two yarn path regulation guides arranged on both sides of the yarn end passing position. 3. The piecing device for a spinning machine according to claim 1, further comprising a yarn guide lever for guiding the yarn end toward the yarn path regulating means.