JP3076255B2 - Size liquid squeezing method for sizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing a yarn from being excessively stretched when a sizing machine is stopped in a sizing machine of a sizing machine.

[0002]

2. Description of the Related Art As a gluing device of a gluing machine, there are a single squeeze system and a double squeeze system.

FIG. 1 shows a gluing device 1 of a single squeeze type in a gluing machine. Sheet yarn 2
The first guide roller 3 and the second guide roller 3
The guide roller 4 contacts the feed roller 5 and is supplied in the direction of the gluing section. At the gluing section, the yarn 2 is immersed in a predetermined level of the glue liquid 10 stored in the glue box 9 by coming into contact with the immersion roller 6, and then the pressure contact between the sizing roller 7 and the squeeze roller 8 is made. In the state where the excess size liquid 10 is narrowed down,
It is sent to the drying process. Further, when the gluing machine is stopped, the drenching glue liquid 11 is supplied to prevent the squeeze roller 8, the sizing roller 7 and the yarn 2 from drying.

[0004] In such a single squeeze system, the yarn 2 cannot be operated at a higher speed, and the productivity is poor. That is, when the speed of the yarn 2 is increased, the size liquid 10 is blown up by the rotation of the immersion roller 6, and falls into the size box 9, and the size liquid 10 foams and hinders the infiltration of the size liquid 10 of the yarn 2. There was a problem that causes.

[0005] In order to solve this problem, a double squeeze type device has been proposed. FIG. 2 shows an example of a double squeeze type gluing device 1. The sheet-like yarn 2 comes into contact with the feed roller 5 by the first guide roller 3 and the second guide roller 4 in the yarn supply unit, and is supplied in the direction of the gluing unit. In the gluing section, the thread 2 is immersed in a predetermined level of the glue liquid 10 stored in the glue box 9 by coming into contact with the immersion roller 6, and
Through the pressure contact between the sizing roller 7 and the sizing roller 7, the excess size liquid 10 is squeezed there.
It is sent to the drying process.

According to the double squeeze method, the size liquid 1
After the yarn 2 soaked in 0 is narrowed down at the pressure contact between the immersion roller 6 and the sizing roller 7, the yarn 2 is also narrowed down at the pressure contact between the sizing roller 7 and the squeeze roller 8. However, it is possible to prevent the size liquid 10 from blowing up and foaming at the pressure contact portion between the immersion roller 6 and the sizing roller 7.

The double squeeze method, however, has the following problems. Generally, yarn tension is generated by the tension applied to the yarn 2. That is, the yarn 2 is dipped in the high-temperature sizing liquid 10 by the sizing device 1 and the yarn 2 in the middle of squeezing has a remarkable yarn elongation. Although the degree of elongation varies depending on the type of yarn, it is noticeable in filament fibers, especially rayon. However, between the two pressure contacts of the roller, the yarn 2 is held and restrained under a predetermined contact pressure, and also due to the short interval between the pressure contacts, the size liquid 10 The yarn elongation also occurs at this portion where the squeezing is not completely squeezed, and the tension is significantly reduced. Further, since the yarn 2 itself is twisted, the yarn shape is disordered (entanglement between yarns). Once the disturbed yarn appearance is not resolved even if the tension is returned by the subsequent re-operation, the subsequent processes (drying,
Weaving), there is a problem that yarn breakage occurs at this point.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is a double squeezing type sizing apparatus in which a thread is immersed in sizing liquid and excess sizing liquid is squeezed by two-point pressure contact of a roller. To prevent the yarn from being excessively stretched and disturbing the yarn appearance.

[0009]

According to the present invention, there is provided a sizing roller comprising: a sizing roller; an immersion roller which infiltrates a size liquid and presses against the sizing roller; and a squeeze roller which presses against the sizing roller. Is wound around the immersion roller and the sizing roller to guide the liquid to be infiltrated with the size liquid, and between the immersion roller and the sizing roller, the sizing roller and the sizing roller are sequentially passed to remove excess size liquid. in gluing device sizing machine squeezing, comprising a center distance changing means for changing the axial distance between the immersion roller and the sizing roller, each time of stopping the glue with device Contact
In a predetermined period of time, the inter-axis distance is increased by the inter-axis distance changing means.

[0010] When the gluing device is stopped, the distance between the axes of the sizing roller and the immersion roller is increased, so that the contact pressure of the immersion roller with respect to the sizing roller is reduced to release the pressure contact of the yarn. Therefore, even if the yarn elongation occurs due to the size liquid that has been infiltrated, the yarn tension becomes uniform, and the yarn appearance is not disturbed due to a partial tension difference as in the conventional case. Does not occur. In addition, since the contact pressure between the sizing roller and the squeeze roller is appropriately set and the size liquid can be appropriately squeezed thereafter, the quality of the gluing of the yarn is maintained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows a double squeeze type gluing apparatus 1 for carrying out the size liquid squeezing method of the present invention.
FIG. 4 shows a passage path of the sheet-like yarn 2 in relation to a plurality of rollers.

3 and 4, the gluing apparatus 1 includes a yarn supply unit 12 and a gluing unit 13. The yarn supply unit 12 includes a first guide roller 3 rotatably supported,
The second guide roller 4 comprises a positively driven feed roller 5. The first guide roller 3 arranged on the upstream side in the feed direction of the yarn 2 is independently rotatably supported by the frame 14. The feed roller 5 is rotatably supported by the frame 14, and is supplied (feeded) at a predetermined speed by a rotary drive source 15, such as a motor, a timing pulley 16, a timing belt 17, a tension pulley 18, and the like. To rotate. Also, the second
The guide roller 4 is disposed so as to be in pressure contact with the feed roller 5 and is rotatably supported by the frame 14 to sandwich the sheet-like yarn 2 and supply it in the feed direction.

Next, the gluing section 13 includes an immersion roller 6, a sizing roller 7, a squeeze roller 8,
It consists of a glue box 9 containing 0. Immersion roller 6
Are supported by the frame 14 via an inter-axis distance changing means. The inter-axis distance changing unit includes a support member that supports the immersion roller and a driving unit that swings the support member. More specifically, the immersion roller 6
It is rotatably supported by a support member, that is, a lever-shaped bearing case 19. Bearing case 19
Is supported on the frame 14 by a swing shaft 20 so as to be swingable.

The driving means includes an air cylinder 2
1, a press lever 23 and a press roll 24 are provided. Air cylinder 2 attached to frame 14
Reference numeral 1 is connected to one end of an L-shaped press lever 23 which is rotatable about a fulcrum shaft 22 fixed to the frame 14. The press lever 23 hits a side surface of the bearing case 19 by a press roll 24 fixed to the other end portion, and presses or separates the immersion roller 6 from the sizing roller 7.

The sizing roller 7 is rotatably supported at a fixed position with respect to the frame 14 at a position in contact with the size liquid 10.
5, the timing belt 26, the tension pulley 27, etc., drive the yarn 2 in the running direction in synchronization with the feed roller 5.

The squeeze roller 8 is rotatably supported at one end of a lever-shaped bearing case 28 at a position in contact with the upper surface of the sizing roller 7. The bearing case 28 is swingably supported by a fulcrum shaft 30 at a substantially intermediate position with respect to a bracket 29 fixed to the frame 14, and is connected to an air cylinder 31 attached to the frame 14 at the other end. I have. here,
The size liquid 10 is accommodated in the size box 9 at a predetermined liquid level, and the immersion roller 6 and the sizing roller 7 are immersed in the size liquid 10.

When the gluing device 1 is operated, the air cylinder 2
As one piston rod moves forward, the press lever 23 connected thereto rotates and the press roll 24 presses the side surface of the bearing case 19. As a result, the immersion roller 6 supported by the bearing case 19
The sizing roller 7 is pressed against the sizing roller 7 by rotating about the swing shaft 20 as a fulcrum. The yarn 2 is guided by the first guide roller 3, is wound around the positively driven feed roller 5, is guided by the second guide roller 4, comes into contact with the immersion roller 6, and is immersed in the size liquid 10. Then, it is narrowed down between the sizing roller 7 and the squeeze roller 8 along the outer peripheral surface of the sizing roller 7, and is fed in the direction of the drying process.

The feed roller 5 and the sizing roller 7 are driven positively. And the remaining first
The guide roller 3, the second guide roller 4, the immersion roller 6, and the squeeze roller 8 are driven in a driven manner by being pressed against the aforementioned positively driven roller or the yarn 2. Elastic members such as rubber are attached to the surfaces of the first guide roller 3, the second guide roller 4, the immersion roller 6, and the squeeze roller 8 as necessary.

The feed roller 5 and the sizing roller 7 are driven synchronously at an appropriate rotation ratio in order to give an appropriate stretch (tension) to the yarn 2. Thread 2
Is immersed in the size liquid 10 at the position of the immersion roller 6, and excessive pressurization is caused by two pressing actions between the immersion roller 6 and the sizing roller 7 and between the sizing roller 7 and the squeeze roller 8. With the liquid 10 being narrowed down, it is sent to the next step. The pressing force of the squeeze roller 8 is set by the air cylinder 31. The internal pressure of the air cylinder 31 is controlled by known control means.
It is set by supplying a predetermined pressure fluid according to the yarn speed.

When the gluing device 1 is stopped, the air cylinder 2
Since the one piston rod moves backward, the immersion roller 6 loses the pressing force from the press roll 24 and moves in a direction away from the sizing roller 7 at the first pressure contact due to gravity. That is, when the press roll 24 stops pressing the side surface of the bearing case 19, the immersion roller 6 rotates by its own weight or the urging force of an urging means such as a spring (not shown), and separates from the sizing roller 7.

When the immersion roller 6 separates from the sizing roller 7, the pressed yarn 2 is released, so that even if the yarn elongation occurs, the yarn tension becomes uniform. For this reason, there is no partial tension difference due to the fact that the pressure contact is not released as in the prior art, so that the yarn shape is not disturbed. The amount of movement of the immersion roller 6 is set in advance so that the yarn length does not change or the yarn length extends by a minute length.

Second pressure contact or sizing roller 7
The pressure contact between the squeeze roller 8 and the squeeze roller 8 may maintain the pressure contact as it is, or the air cylinder 31 may be operated to change the pressure contact force in a weaker direction or may be completely separated to reduce the pressure contact force to zero. May be set. Then, after the gluing device 1 is restarted, the contact pressure at the first and second pressure contacts is set so that the squeezing of the size liquid 10 becomes appropriate.
Of course, when the gluing device 1 is restarted, the immersion roller 6 is returned to the original position.

FIG. 5 shows a specific example of the contact pressure setting (joining setting) while the gluing device 1 is stopped. Gluing device 1
In the process of repeating the operation → stop → operation in response to the state signal, the yarn speed changes under a predetermined falling or rising state. And example a
Is an example in which the immersion roller 6 is continuously separated from the sizing roller 7 during the entire period of time when the gluing device 1 is stopped. In Example b, the pressing and separating are performed at a predetermined cycle while the gluing device 1 is stopped. Is repeated at times t1 and t2, and example c is an example in which after the predetermined time t1 elapses after the gluing device 1 is stopped, the separated state is continuously maintained for a predetermined period. Stops the gluing device 1
This is an example in which the contact state is continuously maintained after that, and the immersion roller 6 is separated for a predetermined time t3 from before the start to after the start. The specific example of the drive pattern is determined according to the thread type, the gluing condition, and the like. Thus, between the axes
The distance changing means is provided for each predetermined stop of the gluing device 1.
During the period, the immersion roller 6 and the sizing roller 7
To increase the distance between the axes, excessive elongation and yarn appearance of the sheet-like yarn 2
To prevent disturbance.

Here, since the separation amount is also related to the contact pressure, in this control, if the separation amount is not set as the target amount but the contact pressure between the immersion roller 6 and the sizing roller 7 is set as the target. Instead of the distance, the magnitude of the contact pressure can be adjusted. The contact pressure is not limited to 0, and may be a small contact pressure that does not completely separate the roller. The "crushing" of the roller surface is eliminated, the restraint of the yarn 2 is released, and the pressure contact due to the yarn elongation is released. It suffices if the tension balance before and after can be relaxed. In FIG. 5, the dotted line indicates the level when the pressing force is set low.

The roller to be displaced may be a sizing roller 7 instead of the immersion roller 6, or both may be moved. Air cylinder 2
The control of 1 and 31 is not limited to the two positioning of advance and retreat, but it is also possible to prepare a plurality of positioning points and select an appropriate positioning point according to the yarn elongation state and the like. Also,
The control of the air cylinder 21 is not limited to the positioning control.
1, the contact pressure between the immersion roller 6 and the sizing roller 7 can be freely set.

Further, a driving means constituting the inter-axis distance changing means, that is, a known actuator such as a motor is applied in place of the air cylinder 21, and the driving amount (contact pressure) at that time can be appropriately set. I just need. In addition, the configuration for moving the roller is a bearing case 19.
Is not limited to the configuration in which the actuator is driven via the press lever 23, and a known mechanism may be used instead. Alternatively, the bearing case 19 may be directly driven by directly connecting an actuator without indirect driving. .

Further, while the gluing device 1 is stopped, the movement of the roller may be monitored. For example, if a roller monitoring system is provided with a sensor that monitors movement and a detection signal is input from a sensor detection signal and an actuator drive command signal to determine whether there is a drive abnormality, the incomplete separation of the rollers can be detected. Because it can be done, there is no need to drive with the yarn disturbed.

The position of the roller and the contact pressure may be detected during gluing or stopping. For this,
The actuator is driven so that the roller has a desired position and contact pressure. Since the actuator can be driven to the set position and contact pressure, the roller can be driven reliably.

[0029]

According to the present invention, each time the gluing device is stopped ,
During the predetermined period of time, the axial distance between the sizing roller and the immersion roller is increased, so that the contact pressure of the immersion roller with respect to the sizing roller is reduced to release the pressure contact of the yarn. Therefore, even if yarn elongation occurs due to the size liquid that has been infiltrated, the yarn tension becomes uniform, so that the yarn appearance does not become disturbed due to a partial tension difference as in the past, and the subsequent yarn breakage occurs. Does not occur. In addition, the contact pressure between the sizing roller and the squeeze roller is appropriately set, and the size liquid can be appropriately squeezed even at the time of restarting thereafter, so that the quality of sizing of the yarn can be maintained.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a general single squeeze type gluing apparatus.

FIG. 2 is a schematic side view of a general double squeeze type gluing apparatus.

FIG. 3 is a side view of the gluing device according to the present invention.

FIG. 4 is a side view of an arrangement state of various rollers along a yarn traveling path in the gluing device according to the present invention.

FIG. 5 is an explanatory diagram of a contact pressure setting state of the immersion roller with respect to the sizing roller when the gluing device is stopped.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Glue apparatus 2 Thread 3 1st guide roller 4 2nd guide roller 5 Feed roller 6 Immersion roller 7 Sizing roller 8 Squeeze roller 9 Glue box 10 Glue liquid 11 Dretting glue liquid 12 Thread supply part 13 Glue part 14 Frame 15 Rotation drive source 19 Bearing case 20 Oscillating shaft 21 Air cylinder 22 Support shaft 23 Press lever 28 Bearing case 29 Bracket 30 Support shaft 31 Air cylinder

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06B 1/00-23/30

Claims (2)

(57) [Claims] 1. A sizing roller, an immersion roller which infiltrates a size liquid and presses against the sizing roller, and a squeeze roller which presses against the sizing roller, wherein the yarn is wound around the immersion roller and the sizing roller. A gluing device of a gluing machine that guides to infiltrate the size liquid and sequentially passes between the immersion roller and the sizing roller and between the sizing roller and the squeeze roller to squeeze excess size liquid. comprising a center distance changing means for changing the Deployment roller and the inter-axial distance of the sizing roller, a predetermined period in stopped every gluing device, and wherein the expanding the axial distance between the said axis distance changing means Squeezing method for a sizing device. 2. The apparatus according to claim 1, wherein the inter-axis distance changing unit includes a support member for swingably supporting the immersion roller and a driving unit for swingably driving the support member. Size squeezing method for the sizer.