JPH09302541A - Apparatus for piecing of spinning machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the prevention of the deterioration in sucking force of an air sucker member and thereby enable sure and rapid threading of a seed yarn (the yarn on the winding side) through a spindle due to its design for cleaning the air sucker member. SOLUTION: This apparatus for piecing of spinning machinery is designed to produce an air stream in the direction opposite to that of a sucking air stream for threading a seed yarn through a twister and thereby clean the air sucker member S.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a spinning machine,
The present invention relates to a piecing device for a spinning machine for splicing cut yarns.

[0002]

2. Description of the Related Art The applicant of the present application has filed in the previous application a spindle support member having a spindle constituting a twisting device and a nozzle block having an air spinning nozzle when a yarn breakage occurs. After separating and, a transfer arm member having a pair of yarn feed rollers holding the seed yarn is arranged near the yarn discharge port of the spindle, and an air sucker member is arranged at the tip of the spindle.
Then, while generating a suction air flow in the air sucker member, the pair of yarn feeding rollers holding the seed yarn of the transfer arm member are rotated to feed the seed yarn,
A piecing device for a spinning machine has been proposed in which a seed yarn is passed through an insertion hole of a spindle (for example, Japanese Patent Application No. 4-3250).
No. 21 (JP-A-6-173129) and Japanese Patent Application No. 6-
See 284269. ).

[0003]

In the piecing device of the spinning machine described above, the air sucker member has sliver debris attached to the spindle or floating when the seed yarn is sucked by the air sucker member. There is a problem in that the sucking force of the air sucker member is reduced by sucking in the cotton wool and the seed yarn cannot be inserted into the spindle reliably and promptly.

Further, sliver scraps attached to the air sucker member, floating cotton dust and the like adhere to the seed yarn to form slabs and cause poor appearance of the yarn.

An object of the present invention is to solve the above-mentioned problems of the conventional piecing device for a spinning machine and to provide a piecing device for a spinning machine with an improved success rate of piecing.

[0006]

In order to achieve the above-mentioned object, the present invention firstly generates an air flow in a direction opposite to a suction air flow for inserting a seed yarn into a twisting device. By doing so, the air sucker member is cleaned, secondly, a lid member for covering the air outlet of the air sucker member is provided, and thirdly, the piecing work is completed. The lid member is operated later.

FIG. 1 is a side view including a partial cross section of a spinning machine as an example to which the piecing apparatus of the present invention is applied. FIG. 1 is a side view of a spinning machine as an example to which the piecing apparatus of the present invention is also applied. 2, which is a side view including a partial cross section,
FIG. 3 is a rear view of the air sucker member installed in the piecing device of the present invention, and FIG. 4 and FIG. 4 are side views of the air sucker member including a cross section taken along line I-I of FIG. An embodiment of the present invention will be described with reference to FIG. 5, which is an enlarged cross-sectional view of the head portion of the air sucker member, but the present invention is not limited to this embodiment without departing from the spirit of the present invention. .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a spinning machine to which the piecing device for a spinning machine of the present invention is applied will be described with reference to FIG.

D is a draft device, for example, 4
A linear drafting device D is shown. Draft device D
Are a back roller 1, a third roller 2, a middle roller 3 having an apron belt, and a front roller 4.
It consists of 4 lines. Reference numeral 5 denotes a trumpet, and the sliver 6 supplied to the draft device D is supplied to the draft device D and stretched, and then supplied to a twisting device T described later to generate a yarn Y.

The twisting device T has an air spinning nozzle 7 for generating a swirling air flow by compressed air injection, a nozzle block 8 for supporting the swirling air flow, and a tip portion 9a located inside the air spinning nozzle 7a. , A spindle (thread guide tube) 9 having an insertion hole 9b, and a spindle support member 1 for supporting the spindle 9
It mainly consists of 0. In the air spinning nozzle 7,
A plurality of air injection holes 7b are formed to generate a swirling air flow. Reference numeral 11 denotes an air chamber formed between the nozzle block 8 and the spindle support member 10. The air chamber 11 is an air suction source that sucks air through a suction hole 12 with a weak suction pressure (not shown). Is connected to
During spinning, it functions as an escape hole for the air jetted from the air jet hole 7b of the air spinning nozzle 7 and also serves to suck and remove floating fibers and the like generated in the air chamber 11 during spinning.

Reference numeral 13 denotes a slit formed on the side wall of the spindle support member 10 on the nozzle block 8 side, and 14
Is a slit formed on the side wall of the nozzle block 8 on the spindle support member 10 side, facing the slit 13 of the spindle support member 10. When the nozzle block 8 and the spindle support member 10 are coupled, the seed yarn Y'which is inserted into the insertion hole 9b of the spindle 9 and pulled out from the tip portion 9a thereof enters the slits 13 and 14, and the nozzle block 8 It is configured so as not to be sandwiched by the side wall of the spindle support member 10 and the side wall of the spindle support member 10.

Reference numeral 15 denotes a cylinder.
The lower frame 17 of the spindle support member 10 is attached to the tip of the fifth piston rod 16. Therefore, by operating the cylinder 15 to move the spindle support member 10 left and right, the spindle support member 10
Can be separated from the nozzle block 8 or combined with the nozzle block 8. 18
Is a nip roller 18 that can come into contact with and separate from the delivery roller 19 that is rotating at all times and that can pick up the yarn Y generated by the twisting device T.

In the operating state in which the spinning machine spins the yarn Y, the sliver 6 supplied to the draft device D is
After being drawn by the draft device D, the yarn is twisted by the twisting device T to generate the yarn Y. That is, the sliver 6 supplied to the air spinning nozzle 7 of the twisting device T
While entering the insertion hole 9b of the spindle 9 from the tip 9a while being swirled by the swirling airflow ejected from the air injection hole 7b, the fiber is formed into the yarn Y. The generated yarn Y is delivered to the delivery roller 1 which is constantly driven to rotate.
9 and the nip roller 18 which is in contact with the delivery roller 19 and winds it into a winding package (not shown).

When a yarn breakage occurs, a detection signal is issued from a yarn breakage detection sensor (not shown), and accordingly, the back roller 1 and the third roller are connected via a clutch (not shown) connected to the back roller 1. The rotation of No. 2 is stopped and the supply of the sliver 6 is stopped. The twisting device T is still operating. Immediately between the stopped third roller 2 and the middle roller 3 that continues to rotate, the sliver 6 is immediately cut into the tip of a brush. After a predetermined time, the air injection from the air injection holes 7b is stopped, and the operation of the twisting device T is stopped. Also, the nip roller 18 is
It is separated from the rotating delivery roller 19.

Then, the cylinder 15 is operated to advance the piston rod 16 to move the spindle support member 10
Is separated from the nozzle block 8 and is wound into a winding package and is rewound from the winding package by a known suction mouth, or a tip portion of the seed yarn Y ′ drawn from a separately prepared package. The transfer arm member A, which is held by the pair of yarn feed rollers 20 and 21,
It is arranged close to the yarn discharge port 9c. On the other hand, between the spindle support member 10 and the nozzle block 8, a head portion S ′ of an air sucker member S, which will be described later, is attached to the spindle 9
It is arranged so as to approach the tip portion 9a of the. Then, the seed yarn Y'is inserted into the insertion hole 9b of the spindle 9 by the suction operation of the head portion S'and the feeding operation of the seed yarn Y'by the yarn feeding rollers 20 and 21 of the transfer arm member A.

Next, the air sucker member S which holds the seed yarn Y'by suction is lowered, and the cylinder 1
5, the piston rod 16 is retracted, and the spindle support member 10 and the nozzle block 8 are connected.
After that, the stopped rotations of the back roller 1 and the third roller 2 are restarted, and the back roller 1 and the third roller 2 are nipped, and the leading end portion thereof is the third roller 2
Between the middle roller 3 and the sliver 6
Is transported. Immediately after the back roller 1 and the third roller 2 are re-driven, the nip roller 18 is brought into contact with the delivery roller 19, and the nip roller 18 and the delivery roller 19 hold the seed yarn Y ′ to run and twist the yarn. The device T is restarted, that is, air is ejected from the air ejection hole 7b. Then, the fibers constituting the sliver 6 sent out from the front roller 4 are introduced into the introduction port 7c of the air spinning nozzle 7, and are entangled with the seed yarn Y'beginning to run near the tip 9a of the spindle 9 and piecing. Will be carried out.

Next, the air-air sucker member S for sucking the seed yarn Y'into the insertion hole 9b of the spindle 9 will be described with reference to FIG.

Reference numeral s1 denotes a frame body of the head portion S'of the air sucker member S. A hollow cylindrical body s2 is attached to the frame body s1, and a peripheral groove s3 provided on the outer periphery of the cylindrical body s2. O-rings s6 and s are attached to s4 and s5, respectively.
7 and s8 are inserted. s9 is a cylindrical cover of the cylindrical body s2, and a through hole s10 is formed in the cylindrical cover s9. Further, the peripheral groove s11 provided on the inner circumference of the cylindrical body s2 and the small diameter portion s provided on the outer circumference of the cylindrical cover s9.
An O-ring s13 is inserted between 12 and 12. s
Reference numeral 14 denotes a slidable nozzle arranged in a hollow cylindrical body s2, and a hole s is formed in a cylindrical side wall s15 of the slidable nozzle s14.
16 are drilled.

S17 and s18 are ring members projecting from the cylindrical side wall s15 at a predetermined interval so as to be orthogonal to the cylindrical side wall s15, and arranged so as to be close to the inner wall of the cylindrical body s2. And ring members s17, s1
8 and the cylindrical body s2, a member having an appropriate friction coefficient (not shown) is inserted in the space between the sliding nozzle s14 and
The air sucker member S is configured so as not to easily move due to tilting or the like. In addition, such a space,
As indicated by s19, a cylindrical cover s9 or the like can be provided as needed and a member having an appropriate friction coefficient can be inserted. The outer wall of the slidable nozzle s14 is composed of a conical outer wall s20 and a cylindrical side wall s21 having a diameter smaller than that of the cylindrical side wall s15, following the cylindrical side wall s15.
9 is inserted into the through hole s10 so as not to contact the inner wall of the through hole s10.

S22 is a substantially conical inner nozzle having a threading hole s23 provided in the slidable nozzle s14. The inner nozzle s22 is provided on the outer wall of the inner nozzle s22.
An appropriate number of fins s24 parallel to the axis of 22 are provided. s25 is a cylindrical cover attached to the sliding nozzle s14, and the cylindrical cover s25 has a through hole s2.
5'is drilled. An O-ring s27 is inserted between a circumferential groove s26 provided on the inner circumference of the sliding nozzle s14 and a small-diameter portion s25 "provided on the outer circumference of the cylindrical cover s25.

Reference numerals s28 and s29 denote air supply pipes attached to the frame s1 so as to face the two holes s30 and s31 formed in the cylindrical body s2 at a predetermined interval. The hole s30 formed in the cylindrical body s2 faces the space s33 formed by the ring member s18 protruding from the cylindrical side wall s15 of the slidable nozzle s14 and the edge s32 of the cylindrical body s2. Has been drilled.

A head portion S'having the above-mentioned structure
The slidable nozzle s14 of the head portion S'is normally housed completely in the cylindrical body s2.
Is a tip portion 9a of a spindle 9 provided on a spindle support member 10 separated from the nozzle block 8.
When placed close to the air supply pipe s29,
When compressed air is supplied to the slidable nozzle s14 and the cylindrical body s
Compressed air is sent into the space formed between the sliding nozzles s1 and 2, and the compressed air presses the ring member s17 protruding from the cylindrical side wall s15 of the sliding nozzle s14 to move the sliding nozzle s1.
5 is moved to the left in FIG. 5, the cylindrical cover s25 attached to the slidable nozzle s14 is projected from the cylindrical body s2, and the through hole s2 of the cylindrical cover s25 is formed.
The tip portion 9a of the spindle 9 is fitted to 5 '.

After inserting the seed yarn Y'through the insertion hole 9b of the spindle 9, the cylindrical cover s25 protruding from the cylindrical body s2.
In order to store the above in the cylindrical body s2 again, after the supply of the compressed air to the air supply pipe s29 is stopped, the compressed air is supplied to the air supply pipe s28. Then, the compressed air enters the space s33 formed by the ring member s18 protruding from the cylindrical side wall s15 of the slidable nozzle s14 and the edge portion s32 of the cylindrical body s2, and the cylindrical cover s25 is attached. The slidable nozzle s14 that is moving in the right direction in FIG. 5 causes the cylindrical cover s25 protruding from the cylindrical body s2.
Are again stored in the cylindrical body s2.

The compressed air supplied from the air supply pipe s29 causes the cylindrical cover s25 to project from the cylindrical body s2, and also causes the sliding nozzle s14 to move from the hole s16 formed in the cylindrical side wall s15 of the sliding nozzle s14. Internal nozzle s22
Enters the space formed between and, and is discharged from the through hole s10 formed in the cylindrical cover s9 serving as the air discharge port of the air sucker member, and thus sucked into the threading hole s23 of the internal nozzle s22. It will generate an air flow.
The fins s2 provided on the outer wall of the internal nozzle s22
4 is for preventing the air flowing in the space formed between the slidable nozzle s14 and the internal nozzle s22 from becoming a swirling air flow.

As described above, when yarn breakage occurs, the cylinder 15 is operated to separate the spindle support member 10 from the nozzle block 8. Then, the transfer arm member A holding the tip end portion of the seed yarn Y ′ by the pair of yarn feed rollers 20 and 21 is arranged close to the yarn discharge port 9c of the spindle 9, and the spindle support member 10 and the nozzle. Between block 8
As shown in FIG. 2, the air sucker member S is
The cylindrical cover s25 housed in the cylindrical body s2 is arranged such that the through hole s25 'is located near the tip 9a of the spindle 9.

Next, when compressed air is supplied to the air supply pipe s29, the compressed air is sent into the space formed between the slidable nozzle s14 and the cylindrical body s2, so that the compressed air becomes a cylinder of the slidable nozzle s14. The ring member s17 protruding from the outer wall s15 is pushed to move the slidable nozzle s14 to the left in FIG. 5, so that the cylindrical cover s25 attached to the slidable nozzle s14 is removed from the cylindrical body s2. The end portion 9a of the spindle 9 is fitted into the through hole s25 'of the cylindrical cover s25.

When compressed air is supplied to the air supply pipe s29, as described above, a suction air flow is generated in the threading hole s23 of the internal nozzle s22, so that the thread feeding rollers 20 and 21 of the transfer arm member A are moved. Rotate it
Seed yarn Y ′ sandwiched between the yarn feeding rollers 20 and 21.
, The seed yarn Y'is inserted into the insertion hole 9b of the spindle 9 by the suction air flow generated in the thread passage hole s23 of the internal nozzle s22. Seed yarn Y'is spindle 9
After passing through the insertion hole 9b, the rotation of the yarn y feed rollers 20 and 21 of the transfer arm member A is stopped, and the feeding of the seed yarn Y ′ is stopped.

Next, after stopping the supply of compressed air to the air supply pipe s29, the compressed air is supplied to the air supply pipe s28. Then, the compressed air is generated by the ring member s18 protruding from the cylindrical side wall s15 of the slidable nozzle s14 and the cylindrical body s.
Into the space s33 formed by the two edge portions s32,
Sliding nozzle s14 to which a cylindrical cover s25 is attached
5, the cylindrical cover s25 protruding from the hollow cylindrical body s2 is housed in the cylindrical body s2 again by moving to the right.

Thereafter, the air sucker member S holding the seed yarn Y'is lowered and the cylinder 15
Is operated to retract the piston rod 16 to connect the spindle support member 10 and the nozzle block 8.

Next, the back roller 1 which has been stopped
And, the rotation of the third roller 2 is restarted to transfer the sliver 6, and immediately after the driving of the back roller 1 and the third roller 2 is restarted, the nip roller 18 is brought into contact with the delivery roller 19 to deliver the nip roller 18 and the delivery roller. The seed yarn Y ′ is run by the roller 19. Furthermore,
Almost at the same time when the nip roller 18 and the delivery roller 19 start running the seed yarn Y ′, the twisting device T is restarted so that the fibers forming the sliver S are sent from the front roller 4 to the air spinning nozzle. 7 is introduced into the introduction port 7c of the spindle 7, and the piecing is performed in the vicinity of the tip end portion 9a of the spindle 9 by being entwined with the seed yarn Y ′ that has started traveling.

Next, referring to FIGS. 3 and 4, the lid member H for appropriately closing the through hole s10 formed in the cylindrical cover s9 of the head portion S'of the air-air sucker member S is appropriately formed.
Will be described. 2 and 5, the lid member H
Is omitted.

Reference numeral h1 denotes a lid capable of covering the through hole s10 of the cylindrical cover s9, and the lid h1 is provided with a pin h2 provided upright on the frame s1 of the head portion S ', and a central portion thereof. Is attached to one end of a V-shaped lever h3 pivotally supported. At the other end of the V-shaped lever h3, there is a piston rod h of an air cylinder h5 whose rear end is pivotally supported by a pin h4 standing on the frame s1 of the head S '.
The tip of 6 is pivoted.

When the air cylinder h5 is actuated and the piston rod h6 is retracted as shown by the chain double-dashed line in FIG. 3, the V-shaped lever h3 is shown by the chain double-dashed line. Therefore, the lid h1 does not close the through hole s10 of the cylindrical cover s9. In this state, the seed yarn Y'is inserted through the insertion hole 9b of the spindle 9 as described above.

After the above piecing work is completed,
The air-air sucker member S is returned to a predetermined standby position to prepare for the next piecing work. During the retreat to this standby position or after returning to the standby position,
Operate the air cylinder h5 to move the piston rod h
6 is advanced as shown by the solid line in FIG. 3,
The V-shaped lever h3 is centered on the pin h2, and in FIG.
It rotates in the counterclockwise direction, and by the lid h1, the cylindrical cover s
The through hole s10 of 9 is covered.

The through hole s10 of the cylindrical cover s9 is the lid h1.
When compressed air is supplied from the air supply pipe s29 in the state of being covered with, the compressed air moves from the hole s16 formed in the cylindrical side wall s15 of the slidable nozzle s14 to the slidable nozzle s14 as described above. The through hole s formed in the cylindrical cover s9 enters the space formed between the inner nozzle s22 and the inner nozzle s22.
10 is about to be discharged, but the through hole s10 has a lid h1.
Since it is covered with the compressed air,
After passing through the threading hole s23, the cylindrical cover s25 is discharged from the through hole s25 '. Therefore, it is possible to clean the sliver waste accumulated in the head portion S ′ of the air-air sucker member S, the floating cotton dust, and the like.

[0036]

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

Since the air sucker member is cleaned, it is possible to prevent the suction force of the air sucker member from being lowered, and therefore the seed yarn can be inserted into the spindle reliably and promptly.

Since the air sucker member is cleaned, the sliver dust attached to the air sucker member and the floating cotton dust adhere to the seed yarn to form a slab or the appearance of the yarn is poor. Can be prevented.

[Brief description of drawings]

FIG. 1 is a side view including a partial cross section of a spinning machine as an example to which a piecing device of the present invention is applied.

FIG. 2 is a side view including a partial cross section of a spinning machine or the like as an example to which the piecing apparatus of the present invention is applied.

FIG. 3 is a rear view of an air sucker member provided in the piecing device of the present invention.

FIG. 4 is a side view of the air sucker member including a cross section taken along line I-I of FIG. 3.

5 is an enlarged cross-sectional view of the head portion of the air sucker member shown in FIG.

[Explanation of symbols]

 A ... Transfer arm member D ... Draft device H ... Lid member S ... Air sucker member T ... Twisting device h1 ... Lid 6・ ・ ・ ・ ・ Sliver 7 ・ ・ ・ Air spinning nozzle 8 ・ ・ ・ ・ ・ Nozzle block 9 ・ ・ ・ ・ ・ Spindle 10 ・ ・ ・ ・ Spindle support member

Claims (3)

[Claims] 1. A piecing device for a spinning machine, wherein an air sucker member is cleaned by generating an air flow in a direction opposite to a suction air flow for inserting a seed yarn through a twisting device. . 2. The piecing device for a spinning machine according to claim 1, further comprising a lid member that covers the air outlet of the air sucker member. 3. The piecing device for a spinning machine according to claim 1, wherein the lid member is operated after the piecing work is completed.