JPH08120532A - Apparatus for ending of spinning machinery - Google Patents

Abstract

PURPOSE: To improve the percentage of success in ending by cutting a spun yarn inserted into a hollow spindle having a cutter member arranged on the discharge side of a suction air steam of an air sucker body to a prescribed length and uniformizing the thickness of a part subjected to ending. CONSTITUTION: This apparatus for ending is capable of transferring a spun yarn Y taken out of a package through a guide member and a suction member to the downstream side of a spindle member S in a spinning part with a transfer arm member Ta, threading the spun yarn Y through a hollow spindle S' of the spindle member with an air sucker member As, opening the tip of the threaded spun yarn, stopping the driving of a pair of yarn feed rollers of the transfer arm member when the spun yarn emerges from a suction part x1 of the air sucker member and cutting the spun yarn with a cutting member (h) arranged in the air sucker member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn splicing device for automatically splicing cut spun yarns in a spinning machine for producing spun yarns using a swirling air flow.

[0002]

2. Description of the Related Art Conventionally, in a spinning machine for producing spun yarn using a swirling air flow, when the spun yarn is cut, the upper yarn on the spinning side and the lower yarn on the winding side are pulled out to obtain the upper yarn. A yarn splicing device is known in which a lower thread is introduced into a knotter to perform yarn splicing.

[0003]

A yarn splicing device that solves various problems of the above-described conventional yarn splicing device is a Japanese Patent Application No. 4-325021 (Japanese Patent Application Laid-Open No. 6-173129) filed by the applicant of the present application. No. gazette) and the like. The operation of the yarn splicing device disclosed in such an application will be outlined below.

The spun yarn, which has been broken and is wound into the package of the spinning unit, is unwound from the package by a suction member having a suction mouth and held at a predetermined position by a guide member. Next, the spun yarn that is unwound from the package held by the guide member and sucked by the suction member has a pair of yarn feeding rollers that can hold the spun yarn at the tip and send the spun yarn. The spun yarn held by the arm and then sucked by the suction member is cut by a cutter arranged on the guide member. Next, the transfer arm holding the spun yarn by the pair of yarn feeding rollers is connected to the downstream side of the spindle member separated from the nozzle member of the spinning unit (the side where the spun yarn spun by the spinning unit comes out is referred to as “downstream”). Side)), and then generate an aspirated air flow in the spindle member by an air sucker member arranged on the spindle member on the side opposite to the side on which the transfer arm is arranged and grip the spun yarn. The pair of yarn feed rollers of the transfer arm are operated to send out the spun yarn, the spun yarn is passed through the spindle member by the suction airflow generated in the spindle member, and then the defibration provided in the air sucker member is performed. The spun yarn is introduced into the tube, and the tip of the spun yarn is defibrated to form a spear shape. After that, the spindle member and the nozzle member are joined in a state where the spun yarn formed into a spear shape is released from the tip of the hollow spindle of the spindle member, and then the draft device is driven to drive the sliver to the spinning unit. In addition, the spinning unit, the spun yarn feeding member including the nip roller and the delivery roller, the spun yarn winding unit, and the like are driven to restart the spinning of the spun yarn.

As described above, the sucking air flow is generated in the spindle member by the air sucker member arranged on the spindle member on the side opposite to the side on which the transfer arm is arranged, and the transfer arm holding the spun yarn is held. The pair of yarn feeding rollers are operated to send out the spun yarn, and the spun yarn is passed through the spindle member by the suctioned air flow generated in the spindle member. There is a problem that the spun yarn drawn out from the spindle needs to have a predetermined length, and therefore the drive of the yarn feeding roller of the transfer arm must be accurately controlled.

Further, the spun yarn drawn out from the hollow spindle of the spindle member is introduced into a defibrating tube in which a swirling air flow opposite to the twisting direction of the spun yarn is generated, and the tip of the spun yarn is defibrated and the tips are spun. However, the reverse twisting due to the swirling air flow opposite to the twisting direction is propagated more than necessary and the tip-like defibration state cannot be obtained at the specified position, or the defibration is effectively performed. Therefore, there is a problem that the success rate of yarn splicing is reduced.

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

[0008]

In order to achieve the above-mentioned object, the present invention is a yarn splicing device for a spinning machine, wherein a cutter member is provided on the discharge side of the sucked air flow of the air sucker body. Further, the cutter member is composed of a fixed blade having a blade on the inner peripheral surface of the through hole and a movable blade, and further, the spun yarn sucked by the defibrating tube arranged in the air sucker body is gripped. A clamp member is provided.

[0009]

EXAMPLES Examples of the present invention will be described below with reference to FIGS. 1 to 9. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

First, a spinning section of a spinning machine to which the yarn splicing device of the present invention is applied will be described with reference to FIG. 1, which is a side view including a partial cross section of the spinning section and the draft device.

In FIG. 1, L is a sliver supplied to a draft device D via a sliver guide T, and the draft device D is a back roller Rb, a third roller Rt,
The sliver L composed of a second roller Rs having an apron and a front roller Rf and drafted in the drafting device D is supplied to a spinning section Sp composed of a nozzle member N and a spindle member S, and formed into a spun yarn Y in the spinning section Sp. It The spindle member S is a cylinder C
It is held by a support member Cs' at the tip of the rod r of s, is joined to the nozzle member N during spinning, and when yarn breakage occurs, it is separated from the nozzle member N by operating the cylinder Cs. It is configured to be.
N'is a nozzle arranged in the nozzle member N, and the nozzle N'is provided with a plurality of air injection holes (not shown). S'is a hollow spindle disposed on the spindle member S, and is rotated by a suitable driving means such as an air turbine or a drive belt (not shown).

The drafted sliver L delivered from the front roller Rf of the draft device D is caused by the suction air flow near the sliver introduction hole N "of the nozzle N'generated by the action of the air ejected from the air ejection hole. The fibers constituting the sliver L sucked by the nozzle N ′ are jetted from the air jet holes in the vicinity of the conical tip of the hollow spindle S ′ and the hollow spindle S ′.
Is subjected to the action of the swirling air flow swirling at a high speed on the outer periphery of the spun yarn, and is temporarily twisted in the direction of the swirling air flow while being separated from the sliver L.
Are sequentially formed, and are fed toward the spun yarn winding portion through the hollow spindle S ′. Regarding the spun yarn forming device as described above, for example, Japanese Patent Laid-Open No. 3-1615
No. 25 publication.

Next, with reference to FIG. 2 showing a schematic front view of the spinning unit U and the yarn splicing device P, a spinning unit U and a yarn splicing device P which are composed of a draft device D, a spinning portion Sp, a nip roller Rn and the like. The arrangement relationship and the like of each member constituting the above will be described.

The spinning unit Sp is disposed adjacent to the draft device D including the back roller Rb, the third roller Rt, the second roller Rs having an apron, and the front roller Rf, and the spun yarn formed by the spinning unit Sp. Y is sent to the spun yarn winding portion W via a spun yarn sending member H including a nip roller Rn and a delivery roller Rd, a slab catcher Z, and the like, and is wound into a package b. Incidentally, Ch is an electromagnetic clutch for stopping or driving the back roller Rb.

On the other hand, the yarn splicing device P separates the package b from the friction roller in order to rewind the spun yarn Y that has been wound into the package b from the package b of the spinning unit U in which the yarn breakage has occurred, and the package b at that position.
A package push-out member J for holding the package b, a package reversing member Rw for reversing the package b separated from the friction roller in the opposite direction to the winding direction, and a tip for pulling out the cut end of the spun yarn Y from the package b. A suction member Su having a suction mouth Su ′ provided with a slit, a guide member Gu for guiding the spun yarn Y drawn from the package b and holding it at a predetermined position, and a suction member Su held by the guide member Gu and sucked by the suction member Su. Spun yarn Y
The spun yarn Y and the spindle member S of the spinning unit Sp.
The spun yarn Y drawn out from the transfer arm member Ta and the package b, which are transferred to the downstream side of the spun yarn, is passed through the hollow spindle S ′ of the spindle member S of the spinning unit Sp, and the tip end of the spun yarn Y is passed through. The air sucker member As for disentanglement (the air sucker member As is omitted in FIG. 2) is configured.

When a yarn breakage occurs, the electromagnetic clutch Ch of the back roller Rb is released and the draft device D is stopped based on a signal from a known yarn breakage detection device through a command from an appropriate control device. And let the spinning department Sp
And driving of the spun yarn winding portion W and the like is stopped. Then, the cylinder Cs is operated to move the spindle member S to the nozzle member N.
Separate from. Further, the spun yarn Y is separated by separating the nip roller Rn from the rotationally driven delivery roller Rd.
Stop sending.

When yarn breakage occurs, the package b is separated from the friction roller to stop the rotation of the package b, and at the same time, the suction mouse S provided with a slit at the tip thereof.
The suction member Su having u ′ is rotated downward to approach the package b, and the suction end of the spun yarn Y wound in the package b is sucked by the suction mouse Su ′. During this suction operation, the drive wheel Rw ′ of the package reversing member Rw is brought into contact with the package b to reverse the package b.

Next, the spun yarn Y sucked by the suction member Su is held at a predetermined position by the guide member Gu by rotating the suction member Su upward. Then
The motor m installed on the frame of the yarn splicing device P,
A transfer arm member Ta including an operating member q, a moving member t for moving the operating member q in the left-right direction, an accelerator wire member k, an operating head member v, and the like.
Is brought close to the guide member Gu which holds the spun yarn Y at a predetermined position, and is gripped by a pair of yarn feeding rollers provided on the operation head member v of the transfer arm member Ta described later, and the transfer arm member is also held. The spun yarn Y extending from Ta and the guide member Gu and sucked by the suction member Su is disposed on the guide member Gu,
Cut with a cutter not shown.

Next, as shown in FIG. 3, which is a side view including a partial cross section of the spinning section, the draft device, etc., the transfer arm member Ta, which holds the spun yarn Y by a pair of yarn feeding rollers, is operated. The head member v is brought closer to the downstream side of the spindle member S separated from the nozzle member N of the spinning unit Sp. Before and after such work, a space between the nozzle member N and the spindle member S will be described later, as shown in FIG. 4, which is a side view including a partial cross section of the spinning unit and the draft device. The air sucker body x of the air sucker member As is arranged.

As shown in FIG. 4, first of all,
The suction part x1 of the air sucker body x of the air sucker member As is arranged close to the hollow spindle S ′. After that, the pair of yarn feeding rollers of the transfer arm member Ta, which holds the spun yarn Y unwound from the package b, which is arranged close to the downstream side of the spindle member S, is driven to drive the spun yarn Y. Send out. The spun yarn Y fed by the pair of yarn feeding rollers is inserted into the hollow spindle S ′ by the suction air flow generated in the hollow spindle S ′ of the spindle member S by the suction portion x1 of the air sucker member As. When the spun yarn Y is inserted into the hollow spindle S ′ and comes out of the suction portion x1 of the air sucker member As, the driving of the pair of yarn feed rollers of the transfer arm member Ta is stopped to stop the delivery of the spun yarn Y. At the same time, the spun yarn Y is cut at a predetermined position by a cutting member h, which will be described later, provided on the air sucker member As.

Next, as shown in FIG. 5, which is a side view including a partial cross section of the spinning unit, the draft device, etc., the air sucker member As is separated from the defibrating unit of the air sucker body x of the air sucker member As. The clamp member c disposed above the x2 and the defibrating unit x2 is lowered until it is located below the hollow spindle S ′. Next, the spun yarn Y discharged from the hollow spindle S ′ is gripped by a clamp member c described later, and a swirling air flow is applied to the defibration portion x2 in the nozzle member N direction opposite to the twisting direction of the spun yarn Y. The spun yarn Y is generated and sucked into the disentanglement portion x2, and the tip of the spun yarn Y is disentangled to form a spear shape. Next, the gripping of the spun yarn Y by the clamp member c is released, and the operations of the air sucker member As and the transfer arm member Ta are stopped, and the air sucker member As is stopped.
And the transfer arm member Ta is returned to the standby position.
The transfer arm member Ta can be returned to the standby position when the insertion of the spun yarn into the hollow spindle S ′ is completed.

In this way, the spun yarn Y whose end is disentangled in a spike shape is ejected from the end of the hollow spindle S ′ by a predetermined amount, and the spindle member S is actuated by the cylinder Cs to operate the nozzle member. Join to N. After that, the draft device D is driven to restart the supply of the sliver L to the spinning unit Sp, and the spinning unit Sp is driven to restart the spinning of the spun yarn Y. The spun yarn Y spun is gripped by the nip roller Rn and the delivery roller Rd of the spun yarn feeding member H, and is fed in the direction of the spun yarn winding portion W to the package b.
To be wound up.

By the operation sequence as described above, the splicing of the spun yarn Y cut by the splicing device P is completed.

Next, regarding the operation head member v of the transfer arm member Ta, in which the spun yarn Y unwound from the package b is gripped and a pair of yarn feeding rollers for sending out the gripped spun yarn Y are arranged. 6, which is a perspective view of the operation head member v and FIG. 7 which is a horizontal sectional view of the operation head member v.

Arm v of transfer arm member Ta
A frame v2 is attached to the tip of the frame 1, and a motor v3 is arranged on the frame v2. Motor v3
The drive shaft v3 'is supported by appropriate bearings v4 and v4', and a worm gear v5 is attached to the tip of the drive shaft v3 '. Further, the worm gear v5 is arranged so as to be substantially orthogonal to the drive shaft v3 ′ of the motor v3, and meshes with the worm wheel v7 attached to the end of the rotary shaft v6.

Reference numeral v8 is a frame member rotatably arranged on the rotary shaft v6 via an appropriate number of collars v9 arranged around the rotary shaft v6, and the rotary shaft v6 is a worm gear v9.
5, a bearing v11 attached to a housing v10 arranged in a frame v2 accommodating a worm wheel v7 and the like
It is supported by a cantilever.

Reference numeral v12 denotes a driving thread feed roller made of synthetic resin or rubber such as urethane rubber, which is fitted to the free end of the rotary shaft v6. The driving thread feed roller v12 is provided on the frame member v8. A collar v12 'arranged in the circular opening v8' is provided, and the collar v1 is also provided.
The front end v12 ″ on the side where 2 ′ is not provided is formed on a substantially conical side wall. Drive yarn feeding roller v12
By providing such a brim v12 'in the above, the spun yarn Y sandwiched between the driven yarn feed roller and the drive yarn feed roller v12, which will be described later, and fed out, has the opening v of the frame member v8.
When moving in the 8 ′ direction, the collar v12 ′ prevents further movement, so that the spun yarn Y to be sent out is
It is possible to prevent the spun yarn Y separated from the drive yarn feed roller v12 or separated from the drive yarn feed roller v12 from being wound around the rotation axis v6. Further, by disposing the outer peripheral surface of the collar v12 ′ close to the inner wall of the opening v8 ′, the gap between the outer peripheral surface of the collar v12 ′ and the inner wall of the opening v8 ′ is reduced, and the spun yarn Y is formed. To prevent the entry of.

Reference numeral v13 denotes a substantially V-shaped rotating frame whose central portion is pivotally attached to a shaft v14 attached to the frame member v8, and one end of the rotating frame v13 has a short portion. The shaft v15 is attached. On the short shaft v15, a passive yarn feed roller v16 made of metal or synthetic resin is provided with bearings v17, v1.
It is rotatably arranged via 7 '. v18 is an O-ring fitted in an annular recess v16 ′ provided on the inner surface near the opening of the passive yarn feed roller v16, and, like the drive yarn feed roller v12, the tip of the passive yarn feed roller v16. The portion v16 ″ is formed on a substantially conical side wall. V19 is an annular groove provided on the rotary frame v13 side of the passive yarn feeding roller v16, and includes the driven yarn feeding roller v16 and the driving yarn feeding roller v12. When the spun yarn Y sandwiched by and sent to the rotary frame v13 moves in the direction of the rotating frame v13, the spun yarn Y is caught by the annular groove v19 and is prevented from moving further. Therefore, the spun yarn Y to be sent is a passive yarn. It can be prevented from coming off from the feed roller v16.

The leading end v12 "of the drive yarn feeding roller v12 and the leading end v1 of the passive yarn feeding roller v16.
By forming 6 ″ on the substantially conical side wall as described above, the spun yarn Y can be reliably inserted between the drive yarn feeding roller v12 and the passive yarn feeding roller v16, and
It will be easier.

A notch v13 'is provided at the other end of the rotating frame v13, and the notch v13' has a frame member v8 on the side opposite to the side on which the rotary shaft v6 is disposed. The engagement shaft v20 'attached to the piston rod v20 inserted at the end of the is fitted. Piston rod v20
Is a cylinder v21 arranged on the frame member v8,
It can move back and forth freely. Therefore, by operating the cylinder v21 and advancing the piston rod v20, the rotary frame v13 is moved around the axis v14.
In FIG. 7, the passive yarn feeding roller v16 pivotally attached to the short shaft v15 attached to the tip of the rotating frame v13 is rotated clockwise in FIG. It is configured to be able to contact the roller v12. On the contrary, by retracting the piston rod v20, the rotary frame v13 is rotated counterclockwise in FIG. 7 about the axis v14, and the passive yarn feeding roller v
16 can be moved away from the drive yarn feed roller v12 as shown by the chain double-dashed line in FIG.

Reference numeral v22 is a substantially L-shaped lever whose one end is pivotally attached to a suitable tubular member v23 through which the piston rod v20 is passed, and the other end of the lever v22 is provided with a suitable member of the frame v2. The piston rod v25 of the cylinder v24 arranged at various places is connected. Therefore, the cylinder v24 is actuated and the piston rod v
By advancing and retracting 25, the frame member v8 is rotated around the tubular member v23, and the posture of the frame member v8 can be controlled.

The operation head member v of the transfer arm member Ta is constructed as described above, and operates the cylinder v21 when gripping the spun yarn Y which extends from the guide member Gu and is sucked by the suction member Su. Then, by retreating the piston rod v20, the rotating frame v1
3 is rotated counterclockwise in FIG. 7 about the axis v14 to attach the short axis v1 attached to the tip of the rotation frame v13.
The passive yarn feed roller v16 pivotally attached to the drive shaft 5 is separated from the drive yarn feed roller v12 fitted to the rotary shaft v6, and the guide member Gu is provided between the drive yarn feed roller v12 and the passive yarn feed roller v16. The spun yarn Y extending from the suction member Su is attracted to the suction member Su. Next, by advancing the piston rod v20, the rotating frame v13
7 in the clockwise direction in FIG. 7 to bring the passive yarn feed roller v16 into contact with the drive yarn feed roller v12 fitted to the rotary shaft v6 to drive the drive yarn feed roller v12.
And the passive yarn feed roller v16 hold the spun yarn Y.

After the spun yarn Y is gripped by the drive yarn feed roller v12 and the passive yarn feed roller v16, the spun yarn Y extends from the guide member Gu and is sucked by the suction member Su.
Is cut by a cutter (not shown) provided on the guide member Gu, and the delivery of the spun yarn Y from the guide member Gu to the transfer arm member Ta is completed. Then, as described above, the drive yarn feeding roller v1
2 and an operation head member v of the transfer arm member Ta that holds the spun yarn Y by the passive yarn feeding roller v16.
To approach the downstream side of the spindle member S separated from the nozzle member N of the spinning unit Sp.

As described above, the air sucker member As
The suction air flow generated in the hollow spindle s of the spindle member S by the suction part x1 of the hollow spindle s
When the spun yarn Y is inserted into the drive yarn, the motor v3 is driven to rotate the drive shaft v3 ', and the drive yarn fitted to the free end portion of the rotary shaft v6 via the worm gear v5 and the worm wheel v7. By rotating the feed roller v12, the spun yarn Y held between the drive yarn feed roller v12 and the passive yarn feed roller v16 can be fed out. In FIG. 7, v26 indicated by a chain double-dashed line is a thread guide having a slit v26 ′ provided in the frame member v8 so as to surround the frame member v8.

The operation head member v of the transfer arm member Ta having the above-described structure is provided with a collar v1 on the driving yarn feeding roller v12 arranged on the operation head member v.
Since 2'is provided, the driven yarn feed roller v16
When the spun yarn Y sandwiched by the drive yarn feeding roller v12 and fed out moves in the direction of the opening v8 ′ of the frame member v8, the collar v12 ′ prevents further movement,
Therefore, it is possible to prevent the spun yarn Y fed out from coming off the drive yarn feeding roller v12 or the spun yarn Y coming off the drive yarn feeding roller v12 from being wound around the rotation axis v6.

Further, a driven yarn feed roller v16 provided on the operation head member v of the transfer arm member Ta.
Since the annular groove v19 is provided in the, it is sandwiched between the driven yarn feeding roller v16 and the driving yarn feeding roller v12,
When the spun yarn Y to be sent out is moved in the direction of the rotating frame v13, it is captured by the annular groove v19 and is prevented from moving further. Therefore, the spun yarn Y to be sent out from the passive yarn feed roller v16. It can be prevented from coming off.

Further, since the driving yarn feeding roller v12 is made of rubber such as synthetic resin or urethane rubber and is fitted to the free end of the rotary shaft v6, the damaged driving yarn feeding roller v12 can be easily removed. Moreover, it can be replaced quickly.

Furthermore, the drive yarn feeding roller v12 is
Since the driven yarn feed roller v16 is brought into contact with the drive yarn feed roller v12 to grip the spun yarn Y, the impact is small when the driven yarn feed roller v16 is brought into contact with the spun yarn Y because it is formed of synthetic resin or rubber such as urethane rubber which is softer than metal. Can be prevented from disconnecting.

Next, FIG. 8 is a vertical sectional view of the air sucker body x of the air sucker member As and FIG. 9 is a perspective view of the air sucker body x of the air sucker member As.
The air sucker body x of the air sucker member As will be described with reference to. In addition, air soccer member As
The arrangement position of the yarn splicing device P and the structure of the suction portion x1 and the defibrating portion x2 are disclosed in Japanese Patent Application No. 4-325021 (Japanese Patent Application Laid-Open No. 6-173129), which is an application of the applicant of the present application. The structure of the suction part x1 and the disentanglement part x2 will be described as a precaution, though it is almost the same as that described above. In addition, the air sucker body x of the air sucker member As is separated into the nozzle member N and the spindle member S.
Since the mechanism for moving between and is similar to that disclosed in Japanese Patent Application No. 4-325021 (JP-A-6-173129), the description thereof will be omitted.

Reference numeral s1 is a frame body of the air sucker main body x, and a hollow cylindrical body s2 is attached to the frame body s1, and circumferential grooves s3, s4, s provided on the outer periphery of the cylindrical body s2.
O-rings s6, s7, and s8 are inserted in 5 respectively. s9 is a cylindrical cover of the cylindrical body s2, and a through hole s10 is formed in the cylindrical cover s9. An O-ring s13 is inserted between the circumferential groove s11 provided on the inner circumference of the cylindrical body s2 and the small diameter portion s12 provided on the outer circumference of the cylindrical cover s9. s14 is a slidable nozzle arranged in the hollow cylindrical body s2, and a hole s16 is formed in a cylindrical side wall s15 of the slidable nozzle s14. Also, s17 and s18 are cylindrical outer walls s15
The ring member s17, s18 and the cylindrical body s, which is a ring member protrudingly provided so as to be orthogonal to the cylindrical outer wall s15 and is arranged close to the inner wall of the hollow cylindrical body s2.
A member having an appropriate friction coefficient (not shown) is inserted into the space between the two so that the slidable nozzle s14 does not easily move due to tilting of the air sucker main body x. Note that such a space can be provided in the cylindrical cover s9 and the like as needed, as shown by s19, and a member having an appropriate friction coefficient can be inserted therein. The outer wall of the slidable nozzle s14 is a cylindrical outer wall s.
15 is formed by a conical outer wall s20 and a cylindrical outer wall s21 having a diameter smaller than that of the cylindrical outer wall s15. The small diameter cylindrical outer wall s21 does not contact the inner wall of the through hole s10 of the cylindrical cover s9. It is inserted in s10.

Reference numeral s22 denotes a substantially conical internal nozzle having a threading hole s23 provided in the slidable nozzle s14. The internal nozzle s22 is provided on the outer wall of the internal 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 through hole s2 is formed in the cylindrical cover s25.
5'is drilled. An O-ring s27 is inserted between the peripheral groove s26 provided on the inner circumference of the sliding nozzle s14 and the 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 body s1 so as to face the holes s30 and s31 formed in the hollow cylindrical body s2. The air supply pipes s28 and the cylindrical body s2 are provided with holes. The formed hole s30 is the above-mentioned ring member s18 protrudingly provided on the cylindrical outer wall s15 of the slidable nozzle s14.
And a space s3 formed by the edge portion s32 of the cylindrical body s2.
3 are provided so as to face each other.

S34 is a frame body s3 constituting the disentanglement section x2
5, the defibrating tube s34 is provided with an inclined hole s36. s37 is the defibration tube s34
And the frame body s35 are fitted around the concave portion s3 around the periphery.
7'and a hole s37 "capable of communicating with a hole s36 formed in the defibration tube s34, and s38 is an air supply tube.
Another hole s37 ″ capable of communicating with the hole s36 formed in the hole 34 is drilled at an angle of 90 °, and the defibration tube s34
Is preferably rotated by 90 ° to switch the swirling direction of the swirling airflow generated in the defibrating tube s34.

The slidable nozzle s14 of the air sucker main body x having the above-described structure is normally housed in a completely hollow cylindrical body s2. However, the slidable nozzle s14 of the air sucker main body x is formed by the spinning portion Sp. Hollow spindle S'above the spindle member S separated from the nozzle member N of
When the compressed air is supplied to the air supply pipe s29, the compressed air is generated in the space formed between the slidable nozzle s14 and the hollow cylindrical body s2. The compressed air sent in presses the ring member s17 protruding from the cylindrical outer wall s15 of the slidable nozzle s14 and moves the slidable nozzle s14 to the left in FIG. 8, so the cylinder attached to the slidable nozzle s14 Shaped cover s25
Are projected from the hollow cylindrical body s2 to form a cylindrical cover s25.
It is possible to fit the tip of the hollow spindle S'into the through hole s25 'and to stop the inertial rotation of the hollow spindle S'by this fitting.

The compressed air supplied from the air supply pipe s29 causes the cylindrical cover s25 to project from the hollow cylindrical body s2, and also through the hole s16 formed in the cylindrical side wall s15 of the sliding nozzle s14 to move the sliding nozzle. Since it enters the space formed between s14 and the internal nozzle s22 and is discharged from the through hole s10 formed in the cylindrical cover s9, a suction air flow is generated in the threading hole s23 of the internal nozzle s22. become. The fins s24 provided on the outer wall of the internal nozzle s22 are the slidable nozzle s14 and the internal nozzle s2.
This is for preventing the air flowing in the space formed between the two and the two from becoming a swirling air flow. When the suction air flow becomes a swirling air flow, after the yarn is introduced, the defibrating tube s3
The spun yarn Y that is defibrated by No. 4 cannot be kept in a more natural state, and troubles such as the spun yarn Y inserted into the threading hole s23 being untwisted and cut by the swirling airflow occur. become.

As described above, the transfer arm member Ta, which is arranged close to the downstream side of the spindle member S and holds the spun yarn Y, in a state where the suction air flow is generated in the yarn passing hole s23 of the internal nozzle s22. Operation head member v
When the spun yarn Y is sent out by rotating the drive yarn feeding roller v12 arranged at, the spun yarn Y is inserted into the hollow spindle S ′ by the above-mentioned suction air flow.

Next, a through hole s formed in the cylindrical cover s9 located on the suction air flow discharge side of the air sucker body x.
The cutter member h arranged at 10 will be described.

Reference numeral h1 denotes a substantially cylindrical fixed blade receiving member which is inserted into the through hole s10 formed in the cylindrical cover s9, and has a flange portion h1 'of the fixed blade receiving member h1 and the cylindrical cover s9. A compression spring h2, which is biased in a direction to push the fixed blade receiving member h1 from the cylindrical cover s9, is disposed between the stepped portion s9 ′ provided on the inner wall. h
Reference numeral 3 denotes a donut-shaped fixed blade mounted in a recess h1 ″ provided in the flange portion h1 ′ of the fixed blade receiving member h1, and an edge portion of a through hole h3 ′ formed in the central portion of the fixed blade h3. A blade is formed on h3 ".

H4 is a frame body s1 of the air soccer body x
Is a movable blade receiving member whose one end is pivotally attached to a column h5 standing upright, and a recess h4 ′ provided in the movable blade receiving member h4.
The movable blade h6 is attached to the fixed blade h3 so as to come into contact with the fixed blade h3. Like the fixed blade h3 described above, the movable blade h6 is provided with a through hole h6 ′ arranged substantially concentrically with the through hole h3 ′ of the fixed blade h3. A blade is formed on the edge portion h6 ″ of the through hole h6 ′. H7
Is a stanchion provided upright on the frame s35 of the air sucker main body x, and the tip end of the stanchion h7 is fitted into a crescent-shaped guide hole h4 ″ formed in the movable blade receiving member h4. Then, at the free end of the movable blade receiving member h4, the frame s35 of the air sucker main body x, the appropriate frame s3
A piston rod h9 of a cylinder h8 arranged via 5'is pivotally mounted.

Therefore, by operating the cylinder h8 to move the piston rod h9 forward and backward, the movable blade receiving member h4 is rotated around the support column h5 to move with the through hole h3 'of the fixed blade h3. A through hole h6 ′ formed in the blade h6
It is configured so that the spun yarn Y inserted in and can be cut. According to the above-mentioned cutter member h, the spun yarn Y can be cut while the spun yarn Y is sucked, that is, while the suction air flow is still acting, and the spun yarn Y escapes like a scissor-shaped cutter. Surely without spun yarn Y
Can be cut, and further cut into a certain length. Of course, the fixed blade h3 and the movable blade h6 as described above
Not limited to the above, a scissor-shaped cutter may be provided.

Next, the clamp member c provided at the tip of the air sucker body x will be described. c1 and c
Reference numeral 2 denotes a pair of cylinders arranged to face the tip side of the air sucker main body x with respect to the defibration tube s34. The piston rods of the cylinders c1 and c2 are provided with disk-shaped clampers c3 and c4. Attached to face each other. Therefore, the cylinders c1 and c2 are actuated to advance the piston rod to bring the clampers c3 and c4 into contact with each other and hold the spun yarn Y.

In the yarn splicing device of the spinning machine according to the present invention, the hollow spindle S'is spun by the action of the suction air flow generated in the hollow spindle S'of the spindle member S by the suction portion x1 of the air sucker member As. When inserting the yarn Y, the motor v3 is driven to rotate the drive shaft v3 ′, and the drive yarn feeding roller fitted to the free end of the rotary shaft v6 via the worm gear v5 and the worm wheel v7. v12 is rotated to drive the yarn feeding roller v12
The spun yarn Y sandwiched between the passive yarn feed roller v16 and the passive yarn feed roller v16 is fed out, but the length of the spun yarn Y fed out by the drive yarn feed roller v12 and the passive yarn feed roller v16 is not set accurately, and at least , The movable blade h protruding from the hollow spindle S ′ of the spindle member S.
6 may be inserted into the through hole h6 ′ formed in 6 and the through hole h3 ′ formed in the fixed blade h3.

The spun yarn Y is fed by the driving yarn feeding roller v12 and the passive yarn feeding roller v16, and is punched in the hollow spindle S'of the spindle member S and the through hole h6 'and the fixed blade h3 formed in the movable blade h6. Through hole h3 '
In the state in which the drive yarn feed roller v12 is inserted, the rotation of the drive yarn feed roller v12 is stopped, and the feeding of the spun yarn Y by the drive yarn feed roller v12 and the passive yarn feed roller v16 is stopped. Then, the cylinder h8 is operated to move the piston rod h
9 is advanced to rotate the movable blade receiving member h4, and the spun yarn Y is cut by the movable blade h6 and the fixed blade h3.

Next, as shown in FIG. 5, the air sucker member As is replaced with the air sucker member A.
s defibrating part x2 and defibrating part x2 of air soccer body x
The clamp member c, which is arranged above, is lowered until it is located below the hollow spindle S ′. Next, the cylinders c1 and c2 are operated to drive the disk-shaped clamper c.
Disk clamper c
The spun yarn Y is gripped by 3 and c4. After that, defibration unit x
A swirling airflow is generated in 2 toward the nozzle member N, which is opposite to the twisting direction of the spun yarn Y, and the spun yarn Y is sucked into the defibrating tube x2. And the shape.

As described above, since the spun yarn Y sucked by the defibrating section x2 is held by the clamp member c, the twist direction of the spun yarn Y is opposite to the downstream side of the clamp member c. Since the twist is not propagated, the reverse twist due to the swirling air flow opposite to the twist direction is propagated farther than necessary, and a tip-like defibration state is formed at a position other than the predetermined position or effective defibration is performed. Therefore, it is possible to prevent the success rate of yarn splicing from decreasing.

[0056]

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

A cutter member is arranged on the discharge side of the sucked air flow of the air sucker body so that the spun yarn inserted in the hollow spindle is always cut into a certain length. It is possible to eliminate the unevenness and instability of the thickness of the spliced portion due to the variation in the length of the spun yarn, and to improve the splicing success rate.

Since the spun yarn sucked into the defibrating tube is held by the clamp member, the twist opposite to the twist direction of the spun yarn is not propagated to the downstream side of the clamp member. Reverse twisting due to the reverse swirling air flow propagates farther than necessary, and a tip-like defibration state is formed at a position other than the predetermined position, or effective defibration is not performed, and the success rate of yarn splicing decreases. This can be prevented.

[Brief description of drawings]

FIG. 1 is a side view including a partial cross section of a spinning unit and a draft device.

FIG. 2 is a front view showing the entire spinning machine and yarn joining device.

FIG. 3 is a side view including a partial cross section of a spinning unit, a draft device and the like similar to FIG.

FIG. 4 is a side view including a partial cross section of a spinning unit, a draft device and the like similar to FIG.

5 is a side view including a partial cross section of a spinning unit, a draft device and the like similar to FIG.

FIG. 6 is a perspective view of an operation head member of a transfer arm member.

FIG. 7 is a horizontal sectional view of an operation head member of a transfer arm member.

FIG. 8 is a vertical sectional view of an air sucker body of an air sucker member.

FIG. 9 is a perspective view of an air sucker main body of an air sucker member.

[Explanation of symbols]

 Sp ... Spinning unit N ... Nozzle member S ... Spindle member Rn ... Nip roller P ... Yarn splicing device As ... Air sucker member Gu ...・ Guide member Su ・ ・ ・ ・ Suction member Ta ・ ・ ・ ・ ・ ・ Transfer arm member c ・ ・ ・ Clamp member h ・ ・ ・ Cutter member v ・ ・ ・ Operation head member v12 ・ ・ ・ Drive yarn feeding Roller v16: driven yarn feed roller

Claims (3)

[Claims] 1. A yarn splicing device for a spinning machine, wherein a cutter member is disposed on the discharge side of the sucked air flow of the air sucker body. 2. The yarn splicing device for a spinning machine according to claim 1, wherein the cutter member is composed of a fixed blade having a blade on the inner peripheral surface of the through hole and a movable blade. 3. The yarn of the spinning machine according to claim 1, wherein a clamp member for holding the spun yarn that has been sucked is provided in a defibrating tube that is provided in the air sucker body. Splice device.