JP3456395B2 - Spinning equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning device, and in particular, at the time of piecing, a package side parent yarn is introduced into the spinning portion, and the sliver is sent as a draft to the parent yarn. The present invention relates to a spinning device for piecing and.

[0002]

2. Description of the Related Art Conventionally, in a spinning apparatus for producing a spun yarn by utilizing a swirling flow of a spinning nozzle, when the spun yarn is cut, a seed yarn or a winding side unwound from a package of a winding section is wound. There is known a piecing method in which a master yarn is introduced into a spinning unit to restart the supply of sliver, and a sliver fiber is wound around a seed yarn or a master yarn in the spinning unit to restart spinning. (JP-A-6-173130)

[0003]

In the conventional piecing method, the spun yarn unwound from the package is used as the master yarn to run backward in the spinning device, and the master yarn is sent to the front part of the spinning device and then to the lower part. The piecing is performed by restarting the spinning while the drafted sliver sent from the upstream side is joined from the state where the suction member is installed and held by suction.

In the above-mentioned conventional method, the gripping of the master yarn depends on the suction force of the suction member, but since the installation position of the suction member is far from the spinning device and the suction force is insufficient, piecing At this time, the parent thread cannot be sufficiently grasped, and the parent thread in the joint portion becomes slack or looped, resulting in a poor appearance and a decrease in the yarn strength of the joint portion. there were.

An object of the present invention is to solve the problems of the conventional spinning device and to provide a spinning device in which the appearance of the seam portion of the piecing is beautiful and the yarn strength is sufficiently strong.

[0006]

In order to solve the above problems, according to the invention of claim 1, there is provided a spinning device for manufacturing a spun yarn by supplying a drafted sliver to a spinning part. In a spinning device that draws a package-side parent yarn of a predetermined length from the spinning roller to the front roller side and performs piecing, a gripping member that grips the parent yarn drawn from the spinning unit with a component of the spinning unit is provided. It is characterized by that. Therefore, during piecing, the parent yarn can be firmly held, and a clean and strong stable seam can be obtained. According to a second aspect of the present invention, the spinning section is configured to be movable between an approach position near the front roller and a retracted position away from the front roller. Therefore, the master yarn can be easily threaded, and the master yarn can be reliably gripped by the moving spinning portion and the fixed gripping member. The invention of claim 3 is characterized in that a suction member is provided below the gripping member. Therefore, at the time of piecing, when the parent yarn is introduced into the spinning section and sent out to the front surface of the spinning section, the spun yarn is immediately sucked by the suction member and can be positioned. Can now be stably gripped.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to FIGS. FIG. 1 is a side view of a spinning section according to the present invention. FIG. 1 (a) shows a situation in which a suction member sucks a parent yarn at the time of piecing and the gripping member grips the parent yarn, that is, the spinning section moves to an approaching position. Shows a certain state,
In (b), the supply of the parent yarn to the spinning section is completed, but the spinning section has not returned to the spinning position, and the spinning section and the holding member have not yet made contact, that is, the spinning section is in the retracted position. Shows the state. FIG. 2 is a perspective view showing an example of the holding member according to the present invention. FIG. 3 is a cross-sectional view of the draft section and the spinning section. FIG. 4 is a side view for explaining the piecing operation of the spinning device to which the present invention is applied. FIG. 5 is a front view showing an entire spinning machine having a spinning device to which the present invention is applied.

First, an air spinning machine to which the present invention is applied will be described. As shown in FIG. 5, the present spinning machine has a configuration in which a large number of spinning units U are arranged, and after the sliver L is sent to the draft device D and formed into the spun yarn Y by the spinning unit Sp, the spun yarn is formed. The Y is taken up by the take-up section W via the nip roller Rn and the slab catcher Z.
P is a piecing device for splicing yarn, and is configured to run below the inside of the spinning machine along the longitudinal direction of the spinning machine.

The process until the sliver L becomes the spun yarn Y and is formed into the package 5 will be described with reference to FIG. The draft device D includes a back roller Rb, a third roller Rt,
This is a so-called four-wire type draft device including a second roller Rs having an apron and a front roller Rf, each of which includes a pair of rollers. The drafting device D is a device for stretching the sliver L supplied through the sliver guide T to a predetermined thinness, and drafts by gradually increasing the rotation speed of each roller. The sliver L, which has been drafted to have a predetermined thinness, has a spinning portion Sp including a spinning nozzle N and a spindle member S including a hollow spindle 4.
And is formed into spun yarn Y at the spinning portion Sp. The spindle member S is the rod r of the cylinder member Cs.
It is held by a supporting member h at the tip of the spinning member Sp and is integrally moved (in the direction of arrow A in FIG. 1), and the spindle member S is separated from the spinning nozzle N to be cleaned. Is also possible.

The hollow spindle 4 has a hollow portion which serves as a yarn passage, and the spinning nozzle N has a plurality of air injection holes n. The spun yarn Y is formed by a swirling flow generated by injecting compressed air toward the tip of the hollow spindle 4 from the injection hole n, but this will not be described in detail here.

Next, the piecing device P running along the longitudinal direction of the spinning machine in which a large number of spinning units U having the above-described spinning section Sp are arranged detects the spinning unit U in which the yarn breakage has occurred and detects the yarn. A piecing method for joining will be briefly described with reference to FIGS.

When the slab catcher Z detects a yarn defect or when the slab catcher Z detects a yarn breakage due to defective spinning, the electromagnetic clutch Ch for controlling the drive of the back roller Rb is turned off to the back roller Rb. The rotation is not transmitted and the supply of the sliver L is stopped. Then, by sensing the signal of the thread break,
The piecing device P running in the machine stand stops at the spinning unit U where the yarn breakage occurs, and piecing (yarn splicing) is performed.

The spinning unit U, which is broken, is a sliver L.
Is stopped, and the spinning portion is integrally moved by the cylinder member Cs to move away from the front roller Rf.
After that, only the spindle member S may be moved to be separable from the spinning nozzle N, and a cleaning process may be incorporated. The package 5 held by the cradle arm 6 rotatable about the shaft 8 is separated from the winding drum 7 and is in a standby state, but the mechanism will not be described in detail here. Further, the nip roller Rn for sending the spun yarn from the spinning section Sp to the winding section W is configured to be able to come into contact with and separate from the delivery roller Rd, but it is normally in contact with the delivery roller Rd, and is attached to the piecing device P during piecing. The lever device is configured to mechanically control contact-separation.

The piecing device P is capable of traveling on a rail 13 provided on a frame 12 below the spinning machine by driving wheels 14, and two pairs of rotatable guide rollers 1 are provided.
Guide rail 1 with 5a and 15b installed on the spinning machine body
The piecing device P is arranged so as to sandwich 6
Keeps his posture stable. The piecing device P is
The package push-out member J for separating the package 5 from the winding drum 7 in order to rewind the spun yarn Y wound into the package 5 from the package 5 of the spinning unit which has caused the yarn breakage, and for holding the package 5 at that position. A reversing roller Rw for reversing the package 5 separated from the winding drum 7 in the direction opposite to the winding direction, a yarn end suction mouth 17 as a suction device for pulling out the yarn end of the spun yarn Y from the package 5, It is composed of a transfer arm member Ta or the like that holds the spun yarn Y drawn out from the package 5 as a parent yarn Ya at a predetermined position and transfers it to the rear end portion 10 of the hollow spindle 4 of the spinning portion Sp.
It is also possible to attach an air sucker member As described later.

In the piecing operation by the piecing device P, first, the package pushing member J is brought into contact with the package 5 by the cam mechanism of the piecing device main body (not shown) to position the package 5. Then, the thread end suction mouth 17 rotates to approach the package 5,
The reverse rotation roller Rw rotates the package 5 in the unwinding direction of the spun yarn and sucks the yarn end wound and broken. The suction mouth 17 has a suction slit having a length substantially equal to the width of the package 5 at the tip thereof, and the yarn end can be sucked by suction from a blower (not shown).

The suction mouth 17 sucking the yarn end
When is rotated upward, the yarn end is gripped by the drive roller R1 and the driven roller R2, which are a pair of feed rollers R installed at the tip of the transfer arm member Ta, and the transfer arm member Ta rotates about the fulcrum 9 as the center of rotation. As a result, the yarn end (parent yarn Ya) is rotated upward to be transferred to the trumpet-shaped rear end portion 10 of the hollow spindle 4.

The structure and mechanism of the transfer arm member Ta will not be described in detail here. Further, the positioning operation of the package 5 by the package pushing member J and the rotation operation of the yarn end suction mouth 17 are all performed by the piecing device P.
The cam mechanism is built in, but the details are not described here.

After the parent yarn Ya gripped by the feed roller R of the transfer arm Ta is guided to the trumpet-shaped rear end portion 10, the yarn conveying nozzle 3 is provided with a regulator 3b, which is an air pressure adjusting device, and an air pipe 3a. Compressed air is supplied via this, and in cooperation with the driving of the yarn feeding roller R, the parent yarn Ya is inserted through the hollow spindle 4 and is further fed to the front of the spinning nozzle N. At this time, if necessary, the air sucker member As may be engaged with the front of the hollow spindle 4 to perform suction.

When the master yarn Ya is sent out in front of the spinning nozzle N, the master yarn Ya is sucked by the suction member Ku provided below the spinning nozzle N, as shown in FIG. 1- (b). It becomes a state. At that time, if the blowing air for guiding the parent yarn Ya to the suction member Ku is also used, the air is more effectively sucked. After that, the spinning member Sp is moved to the front roller Rf side by the cylinder member Cs and returns to the origin position. When the spinning portion Sp returns to the original position, the cap member 2 and the gripping member 1 mounted on the front portion of the spinning portion Sp come into contact with each other, and as shown in FIG. The parent thread Ya is held by the Sp cap member 2 and the holding member 1. That is, the compressed yarn is ejected from the yarn conveying nozzle 3 and the yarn is fed by the feed roller R, and the parent yarn Ya is fed to the front of the spinning nozzle N by a certain length, and the spinning start preparation is completed. Thereafter, the jetting of compressed air from the yarn conveying nozzle 3 is stopped, the feed roller R releases the yarn gripping, and the transfer arm member Ta including the feed roller R returns to the original position.

When the spinning portion Sp is integrally moved toward the front roller Rf side, the cap member 2 of the spinning nozzle N of the spinning portion Sp contacts the gripping member 1. That is, since the cap member 2 and the gripping member 1 come into contact with each other in a state where the master yarn Ya is sucked by the suction pipe Ku, the gripping member is installed along the yarn path where the master yarn Ya is sucked. In other words, the parent yarn Ya is reliably held by the cap member 2 and the holding member 1.

The gripping member 1 is preferably a member having elasticity. This is because the accuracy with which the gripping member 1 is attached is facilitated, and a stable gripping force can always be obtained regardless of the thread quality and thickness of the parent thread Ya. In the present invention, as the gripping member 1, as shown in FIG. 2, the contacting portion with the master yarn Ya is the gripping member 1 made of a ceramic rod, and an elastic body such as a leaf spring or a coil spring is supported as the connecting member 1a. Through the rod 1b, the fixing member 1c
However, a linear elastic wire that does not use the connecting member 1a may be used, or an elastic body such as a leaf spring may be used.

In the present invention, the cap member 2 is selected as a constituent member of the spinning portion for gripping the master yarn, but it is not limited thereto. However, since the most beautiful yarn seam can be obtained by gripping the parent yarn Ya in the portion close to the sliver introducing port 2a, the place where the parent yarn Ya is grasped is the cap member 2 located immediately below the sliver introducing port 2a. Is preferred. Further, since the cap member 2 is made of metal and has no elasticity, the grasping member 1 is an elastic member, but at least one of them may be an elastic body,
An elastic member may be attached to the cap member 2 and an inelastic gripping member may be used.

To start spinning, the electromagnetic clutch Ch is first turned on, the back roller Rb starts to rotate, and the sliver L is supplied to the draft section. Draft sliver L
Has its tip once sucked into the suction tube Ku. After that, when the package 5 comes into contact with the winding drum 7 to start winding, and at the same time when compressed air is jetted from the spinning nozzle N to start spinning, the sliver L sucked by the suction pipe Ku is the parent yarn Ya. The piecing (yarn splicing) is performed by merging with the spun yarn and being drawn into the spinning portion Sp to form one spun yarn Y.

When piecing, the base yarn Ya is pulled into the spinning portion Sp while being lightly gripped by the elastic gripping member 1, so that piecing is always performed in a taut state. The parent yarn Ya did not become loose or looped, so that the yarn seam was clean and the yarn strength at the joint was not weakened, and stable yarn strength was obtained.

[0025]

As described above, according to the present invention,
During piecing for splicing of the air spinning machine, the parent yarn Ya that is unwound from the package is sent to the front of the spinning unit and then lightly gripped between the cap member and the gripping member of the spinning unit. The parent yarn did not become loose or loop during piecing, and a beautiful and stable yarn splicing part was obtained. In addition, since the gripping member has elasticity, a stable gripping force can be always obtained regardless of the thread type and the thread thickness.

[Brief description of drawings]

FIG. 1 is a side view of a spinning unit according to the present invention,
In (a), the suction member sucks the parent yarn during piecing,
The state where the spinning member is gripped by the gripping member, that is, the spinning unit is in the spinning position is shown. (B) shows that the supply of the parent yarn to the spinning unit is completed, but the spinning unit has not returned to the spinning position. ,
It shows a state where the spinning section and the grip member are not yet in contact with each other, that is, the spinning section is in the standby position.

FIG. 2 is a perspective view of a gripping member according to the present invention.

FIG. 3 is a side view of a spinning section and a draft section according to the present invention.

FIG. 4 is a side view explaining a piecing operation of the spinning device to which the present invention is applied.

FIG. 5 is a front view showing the entirety of a spinning machine having a spinning device to which the present invention is applied.

[Explanation of symbols]

1 gripping member 2 Cap member 5 packages L sliver Y spun yarn Ya parent thread Sp spinning department D draft device Rf front roller P piecing device Ku suction member

Claims (3)

(57) [Claims] 1. A spinning device for producing a spun yarn by supplying a drafted sliver to a spinning unit, wherein spinning is performed by pulling out a package side parent yarn of a predetermined length from the spinning unit to a front roller side. A spinning device, comprising: a gripping member that grips the parent yarn pulled out from the spinning unit with a component of the spinning unit. 2. The spinning device according to claim 1, wherein the spinning unit is configured to be movable between an approach position near the front roller and a retracted position away from the front roller. 3. The spinning device according to claim 1, wherein a suction member is provided below the grip member.