JPH09183572A - Piecing device of spinning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold master yarn on a fixed position without being waved by whirling air flow by arranging a resistance adding member holding master yarn inserted into the hollow spindle of a spindle member by both the sucking force of sucking air flow and mechanical resisting force, at piecing. SOLUTION: A suction pipe s8 connected to an air suction source through a suitable valve and the like is connected to a through hole S7 provided on the circumferential wall s6 in the vicinity of the closed side s5 of a cylindrical main body s3, and when they are operated so as to generate sucking air flow in the cylindrical main body s3 through the suction pipe s8, master yarn Y' arranged in the vicinity of the opening part s4 of the cylindrical main body s3 is sucked in the cylindrical main body s3 through the through hole s12' of a guide member s12 arranged in the opening part s4 of the cylindrical main body s3, and suckingly held with a suction pipe s8 through the through hole s7 while bending zigzag by a lower baffle plate s9, an upper baffle plate s11, and a lower baffle plate s10. Hereby, fiber is surely stuck to the master yarn, and the success rate of piecing can be improved.

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 splicing cut spun yarns in a spinning machine using a swirling air flow having a spindle member separable from a nozzle member.

[0002]

2. Description of the Related Art Conventionally, in a spinning machine utilizing a swirling air flow having a spindle member separable from a nozzle member, when the spun yarn is cut, the spindle member is separated from the nozzle member and then the spindle member After inserting the end of the spun yarn unwound from the winding package or the yarn (hereinafter simply referred to as “parent yarn”) wound into a separately prepared package into the hollow spindle, A yarn splicing device for a spinning machine, which joins the spindle member and then restarts the driving of the spinning machine so that the fibers constituting the sliver supplied from the draft device are attached to the parent yarn and the yarn is spliced. It has been known.

[0003]

In the yarn splicing device of the conventional spinning machine described above, the parent yarn inserted into the hollow spindle of the spindle member and pulled out from the tip of the hollow spindle is used for re-driving the spinning machine. Due to the swirling airflow generated in the nozzle member, it is swung around without being held at a fixed position, and therefore the fibers constituting the sliver supplied from the draft device do not adhere to the parent yarn or The tip is not inserted into the hollow spindle to form a loop, and there is a problem that yarn splicing fails or the seam portion is weak and yarn breaks again.

[0004] It is an object of the present invention to solve the above-mentioned problems of the conventional splicing device of a spinning machine and to provide a splicing device of a spun machine having a good seam form.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is, firstly, in yarn splicing, a parent yarn inserted into a hollow spindle of a spindle member is swirled from a nozzle member. So that it is not swung by
A resistance imparting member is provided which is held by both the suction force of the suctioned air flow and the mechanical resistance force. Secondly, by bending the parent yarn in a zigzag shape, The mechanical resistance is added, and the third
In the above, the parent thread is clamped to impart mechanical resistance to the parent thread.

[0006]

EXAMPLE An example of a yarn splicing device for a spinning machine according to the present invention will be described below with reference to the drawings. However, the present invention is not limited to this example as long as the gist of the present invention is not exceeded.

First of all, referring to FIG. 1 which is a side view of a spinning section, a drafting device and the like including a partial vertical cross section along a center line, spinning of a spinning machine in which the yarn splicing device of the present invention is arranged. Parts and the like will be described.

Reference numeral 1 denotes a sliver which is supplied to a draft device 3 via a sliver guide 2. The draft device 3 as an example comprises a back roller 3a, a third roller 3b, a second roller 3c having an apron and a front roller 3d. The sliver 1 drafted by the draft device 3 has a nozzle member 4a and a spindle member 4b.
And is formed into spun yarn Y in the spinning unit 4.

The spindle member 4b is supported by a supporting member 5b at the tip of the piston rod 5a of the cylinder 5, and is joined to the nozzle member 4a during spinning. It is configured to be separated from the nozzle member 4a by being operated. Reference numeral 4a 'denotes a nozzle arranged on the nozzle member 4a, and the nozzle 4a' is provided with a plurality of air injection holes 4a ". 4b 'indicates a non-rotating member arranged on the spindle member 4b. The hollow spindle of the
b'can be rotated by a suitable driving means.

Reference numeral 4c denotes a groove portion formed on an edge portion of the nozzle member 4a on the spindle member 4b side, and reference numeral 4d denotes a groove portion formed on the spindle member 4b so as to face the groove portion 4c formed on the nozzle member 4a. is there. During the yarn splicing operation, when the nozzle member 4a and the spindle member 4b in which the master yarn Y'is inserted into the hollow spindle 4b 'are joined, by the groove portion 4c of the nozzle member 4a and the groove portion 4d of the spindle member 4b. A slit 4e is formed, and the parent yarn Y'is inserted into the slit 4e so that the parent yarn Y'is not sandwiched between the joined nozzle member 4a and spindle member 4b.

The sliver 1 delivered from the front roller 3d of the draft device 3 is a nozzle caused by the suction air flow in the vicinity of the sliver introduction hole 4a "of the nozzle 4a 'which is generated by the action of the air ejected from the air injection hole 4a". It is sucked into 4a '. The fibers composing the sliver 1 sucked into the nozzle 4a 'are ejected from the air ejection hole near the conical tip of the hollow spindle 4b' and the hollow spindle 4b '.
Under the action of a swirling air flow swirling at a high speed around the outer periphery of b ′, the fibers twisted in the direction of the swirling air flow while being separated from the sliver 1, and the twisted fibers are sequentially formed on the spun yarn Y, The spun yarn Y is fed through the hollow spindle 4b ′ toward the winding portion. Regarding the spun yarn forming device as described above, for example, Japanese Patent Laid-Open No. 3-161
It is disclosed in Japanese Patent No. 525.

Next, the yarn splicing operation will be described with reference to FIGS. 2 to 5 which are side views of the spinning section and the like including a part of a vertical cross section along the center line of the spinning section similar to FIG.

When a yarn breakage occurs, the draft device 3 is stopped through a command from an appropriate controller based on a signal from a known yarn breakage detecting device, and the spinning section 4 and the spun yarn Y Stop the drive of the winding unit. Then, the cylinder 5 is operated to separate the spindle member 4b from the nozzle member 4a.

Next, as shown in FIG. 2, the operating head member T'of the transfer arm member T, which holds the parent yarn Y'by a pair of thread feed rollers t1 and t2 which can freely come into contact with and separate from the nozzle, The downstream side of the spindle member 4b separated from the member 4a is approached. Before and after such work, the air sucker member S is provided between the nozzle member 4a and the spindle member 4b as shown in FIG.
The air soccer body S'of is arranged. The transfer arm member T is disclosed in Japanese Patent Application No. 6-284269 filed by the applicant of the present application, so that detailed description of its specific structure and operation will be omitted.
The structure and operation of the air sucker member S are substantially the same as the structure and operation of the air sucker member disclosed in the above-mentioned Japanese Patent Application No. 6-284269, except for the resistance imparting member described later.

As shown in FIG. 3, first of all,
The suction part s1 of the air sucker body S ′ of the air sucker member S is arranged close to the hollow spindle 4b ′.
Then, a pair of yarn feeding rollers t1 of the transfer arm member T which holds the parent yarn Y ′ and which is arranged close to the downstream side of the spindle member 4b while generating the suction air flow in the suction portion s1, The t2 is driven to send out the master yarn Y '. The parent yarn Y ′ delivered by the pair of yarn feed rollers t1 and t2 is inserted into the hollow spindle 4b ′ by the suction air flow of the suction portion s1 of the air sucker member S. When the parent yarn Y ′ is inserted into the hollow spindle 4b ′ and comes out of the suction portion s1 of the air sucker member S,
A pair of yarn feed rollers t of the transfer arm member T
The driving of 1 and t2 is stopped to stop the delivery of the master yarn Y ', and the master yarn Y'is cut at a predetermined position by the cutting member s2 arranged on the air sucker member S. Prior to this cutting, the suction air flow of the suction portion s1 of the air sucker main body S ′ is stopped. The cutting member s2 may be omitted. In this case, the yarn feeding rollers t1 and t2 need only feed the parent yarn Y'to a position where the parent yarn Y'is slightly out of the rear end surface of the air sucker main body S '.

Next, as shown in FIG. 4, the air sucker member S is provided with a resistance imparting member S ″ disposed above the air sucker body S ′ of the air sucker member S.
Is lowered until it is located substantially at the position of the hollow spindle 4b 'of the spindle member 4b.

The resistance applying member S ″ will be described with reference to FIG. 6 which is a perspective view of the resistance applying member S ″ and FIG. 7 which is a vertical sectional view taken along the center line of the resistance applying member S ″.

S3 is a tubular body having an opening s4 at one end and the other end closed, and the closed side s of the tubular body s3.
A suction pipe s8 connected to an air suction source (not shown) via a suitable valve or the like is connected to the through hole s7 formed in the peripheral wall s6 near the point 5. s9 and s10 are lower baffle plates attached to the lower half of the peripheral wall s6 of the cylindrical main body s3 at predetermined intervals. Further, s11 is an upper baffle plate attached to substantially the upper half of the peripheral wall s6 of the cylindrical main body s3, and the upper baffle plate s11 is a lower baffle plate s9, s10.
The lower end edge s11 'of the upper baffle plate s11 is disposed between the upper end edge s of the lower baffle plates s9 and s10.
It is configured to be located below the line connecting 9'and s10 '. s12 is a guide member having a through hole s12 'through which the master yarn Y'can be inserted in the central portion and a thread guide s12 "at the upper portion.
2 is arranged in the opening s4 of the cylindrical main body s3.

When an air suction source (not shown) or a valve is operated to generate a suction air flow in the cylindrical main body s3 via the suction pipe s8, the opening s4 of the cylindrical main body s3.
The parent yarn Y ′ arranged in the vicinity is the opening s of the cylindrical main body s3.
4 is sucked into the cylindrical main body s3 through the through hole s12 'of the guide member s12 and the lower baffle plate s.
9, the upper baffle s11 and the lower baffle s10, while being bent in a zigzag shape, through the through hole s7, the suction tube s
8 will be held by suction. The above guide member s12
As a result, the opening portion of the opening s4 of the tubular body s3 is narrowed, so that the suction force of the tubular body s3 is strengthened, and therefore, the parent that is reliably disposed near the opening s4 of the tubular body s3. The yarn Y ′ can be sucked into the tubular main body s3.

As shown in FIG. 4, the air sucker member S is provided with a resistance imparting member S ″ disposed above the air sucker body S ′ substantially at the position of the hollow spindle 4b ′ of the spindle member 4b. When the suction air flow is generated in the cylindrical main body s3 via the suction pipe s8 while the air suction source or the valve is operated while being lowered until it is arranged, it is inserted into the suction portion s1 of the air sucker main body S ′. The parent yarn Y ′ being drawn is sucked into the cylindrical main body s3, and is bent in a zigzag shape by the lower baffle plate s9, the upper baffle plate s11, and the lower baffle plate s10, while passing through the through hole s7.
It will be sucked and held by the suction tube s8. During the storage operation of the parent yarn Y'by the resistance imparting member S ", the pair of transfer arm members T are arranged so that the parent yarn Y'is sucked and held by the suction tube s8 for a predetermined length. The yarn feeding rollers t1 and t2 are driven to feed the master yarn Y '.

The base yarn Y'having a predetermined length is formed by the resistance giving member S "
, The yarn feed rollers t1 and t2 are separated from each other to release the nipping of the master yarn Y'and return the transfer arm member T to the standby position.

Simultaneously with or before or after the transfer arm member T is moved to the standby position, the air sucker member S is lowered so as not to interfere with the spindle member 4b moving in the nozzle member 4a direction. Let

Next, the cylinder 5 is operated to operate the cylinder shown in FIG.
The spindle member 4b is joined to the nozzle member 4a as shown in FIG. At this time, the master yarn Y ′ inserted into the hollow spindle 4b ′ of the spindle member 4b and held by the resistance imparting member S ″ is slit 4e formed by the groove portion 4c of the nozzle member 4a and the groove portion 4d of the spindle member 4b. Since it is inserted into the spindle member 4b and the nozzle member 4a, the spindle member 4b and the nozzle member 4a are not sandwiched between the spindle member 4b and the nozzle member 4a. Four
Parent thread Y'inserted in the hollow spindle 4b 'of b
Is configured to be engaged with the yarn guide s12 ″ of the guide member s12, the traveling position of the master yarn Y ′ is restricted to a fixed position, and thus the wobble of the master yarn Y ′ can be prevented,
The success rate of yarn splicing can be improved.

After that, the air injection hole 4 of the nozzle member 4a
The air is jetted from a ″ to generate a swirling air flow toward the tip of the hollow spindle 4b ′, and the driving of the draft device 3 is restarted to supply the sliver 1 to the spinning unit 4 and the master yarn Y ′. The fibers constituting the sliver 1 are attached to the yarn to perform yarn joining.At this time, in the present invention, the parent yarn Y '
Is sucked into the cylindrical main body s3 of the resistance imparting member S ″, and is bent in a zigzag shape by the lower baffle plate s9, the upper baffle plate s11, and the lower baffle plate s10 while passing through the through hole s7. Since the master yarn Y'is held by suction at s8, the master yarn Y'is held at a substantially constant position without being swung by the swirling intake flow, so that the master yarn Y'can be reliably held by the sliver 1. The constituent fibers are attached, and yarn splicing can be performed without failure.

When it is difficult to hold the parent yarn Y'in a fixed position only by the suction air flow in the cylindrical main body s3, the suction air flow in the cylindrical main body s3 is used as described above. In addition to the suction force, the lower baffle s9 and the upper baffle s11
By bending the master yarn Y ′ in a zigzag shape by the lower baffle plate s10 and imparting mechanical drawing resistance to the master yarn Y ′, the swinging of the master yarn Y ′ by the swirling intake flow described above is surely performed. Therefore, the success rate of yarn splicing is improved.

Lower baffles s9 and s10 and upper baffle s
The number of 11 is not limited to the above-described embodiment, and the lower baffle plate and the upper baffle plate may each be one, or the lower baffle plate may be three or more and the upper baffle plate may be two. The above can be applied. In addition, the lower baffle s described above
9, s10 upper edge s9 ', s10' and upper baffle s
It is also possible to increase the mechanical pull-out resistance of the parent yarn Y ′ by making the lower end edge s11 ′ of 11 a rough surface or attaching a fluff-like resistor. Furthermore, the parent thread Y '
In consideration of the thread quality, thickness, etc., the arrangement interval of the lower baffle plates s9, s10 and the upper baffle plate s11 and the degree of overlap can be appropriately adjusted.

Instead of the lower baffles s9, s10 and the upper baffle s11, a holding member such as a tension washer or a tension gate which can be freely moved in and out of the cylindrical main body s3 can be provided. In this case, when the parent yarn Y ′ is introduced into the tubular body s3, the holding member is opened, and after the parent yarn Y ′ is introduced into the tubular body s3, the holding member is closed to remove the parent yarn Y ′. Hold it. In this way, in addition to the suction force by the suction air flow in the cylindrical main body s3, the parent yarn Y ′ is provided with the mechanical pull-out resistance by the sandwiching member, so that the parent yarn Y ′ by the swirling intake flow described above is given. It is possible to reliably prevent the swinging of the.

[0028]

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

At the time of yarn splicing, the parent yarn is held by the suction force and the mechanical resistance force of the resistance imparting member, so that the parent yarn is not swung by the swirling air flow, and therefore, the certainty is ensured. In addition, the fibers are attached to the parent yarn, the success rate of yarn splicing can be improved, and the shape of the seam can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a spinning unit, a draft device, etc., including a partial vertical cross section along a center line of the spinning unit.

FIG. 2 is a side view of a spinning unit, a draft device and the like including a part of a vertical cross section along the center line of the spinning unit similar to FIG.

FIG. 3 is a side view of the spinning unit, the draft device and the like including a part of a vertical cross section along the center line of the spinning unit similar to FIG.

FIG. 4 is a side view of the spinning unit, the draft device and the like including a part of a vertical cross section along the center line of the spinning unit similar to FIG.

5 is a side view of the spinning unit, the draft device and the like including a part of a vertical cross section along the center line of the spinning unit similar to FIG. 1. FIG.

FIG. 6 is a perspective view of a resistance applying member as an example applied to the yarn joining device of the spinning machine of the present invention.

FIG. 7 is a vertical sectional view taken along the center line of the resistance imparting member as an example applied to the yarn splicing device of the spinning machine of the present invention shown in FIG.

[Explanation of symbols]

 1 --- Sliver 3 --- Draft device 4 --- Spinning unit 4a --- Nozzle member 4b --- Spindle member s9, s10 ... Lower baffle plate s11 ... Upper baffle plate S ... Air sucker member T ... Transfer arm member S "... .... Resistance imparting member Y '...

Claims (3)

[Claims] 1. At the time of yarn splicing, the parent thread inserted into the hollow spindle of the spindle member is prevented from being swung by the swirling airflow from the nozzle member, and the parent thread is attracted by a suction air flow and mechanical resistance is exerted. A yarn splicing device for a spinning machine, comprising a resistance imparting member arranged to be held by both forces. 2. The yarn splicing device for a spinning machine according to claim 1, wherein the parent yarn is bent in a zigzag shape to impart mechanical resistance to the parent yarn. 3. The yarn splicing device for a spinning machine according to claim 1, wherein the parent yarn is clamped to impart mechanical resistance to the parent yarn.