JP2023163590A - Spun yarn take-up apparatus - Google Patents

Abstract

An object of the present invention is to provide a spinning take-off machine that can reliably cut yarn using a yarn cutting and suction device. A thread cutting/suction device 30 that includes a cutter 32 capable of cutting a plurality of threads traveling along the arrangement direction in which the plurality of threads are lined up, and a suction device 35 capable of sucking the threads cut by the cutter 32. and a godet roller which is disposed downstream of the yarn cutting suction device 30 in the yarn running direction and sends a plurality of running yarns in the yarn traveling direction, and when the yarn Y is cut and sucked by the yarn cutting suction device 30 , and a control device capable of controlling to stop the godet roller. By bringing the plurality of threads Y closer to each other, the cutter 32 and the suction device 35, it is possible to cut the plurality of threads Y in order and suction them. The control device stops the godet roller based on at least a plurality of threads Y being cut. [Selection diagram] Figure 5

Description

The present invention relates to a spinning take-off machine equipped with a yarn cutting and suction device.

BACKGROUND ART Conventionally, a spinning take-off machine has been known that sends out a spun yarn via a godet roller and winds it up at a winding section. In such a yarn take-up machine, the yarn continues to be spun even if the winding section stops winding the yarn, so the yarn that continues to be spun is cut and suctioned by a yarn cutting and suction device. It is necessary to keep it.

For example, Patent Document 1 discloses a yarn that includes a cutter that moves in the arrangement direction of a plurality of yarns and cuts the traveling yarn, and a suction device that is connected to a suction source and sucks the yarn cut by the cutter. A cutting suction device is disclosed. In the yarn cutting and suction device disclosed in Patent Document 1, the connection between the suction source and the suction device is cut off during yarn winding (for example, see paragraph [0031] of Patent Document 1).

Japanese Patent Application Publication No. 2012-180610

In the yarn cutting suction device as disclosed in Patent Document 1, when winding of the yarn is interrupted, the suction source and the suction device are connected, and the yarn cut by the cutter is suctioned. However, if winding of the yarn is interrupted, the tension of the yarn decreases, which may make it difficult to cut the running yarn. Furthermore, if the running thread is thick, it may be difficult to cut the running thread.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a spinning take-off machine that can reliably cut yarn using a yarn cutting and suction device.

(1) The spinning take-off machine of the present invention includes:
A thread cutting and suction device including a cutter capable of cutting the plurality of threads traveling along the arrangement direction of the plurality of threads, and a suction device capable of sucking the threads cut by the cutter;
a roller disposed downstream of the thread cutting and suction device in the thread running direction and feeding the plurality of running threads in the thread running direction;
a control device capable of controlling the roller to stop when the yarn is cut and suctioned by the yarn cutting and suction device;
Equipped with
By bringing the plurality of threads close to the cutter and the suction device, the plurality of threads can be sequentially cut and suctioned,
The control device includes:
Control is performed such that the rotation of the roller is not decelerated even if one of the plurality of threads is in a cut state, and the roller is stopped based on at least a plurality of threads being in a cut state.
It is characterized by

According to the spinning take-up machine described in (1) above, the rotation of the roller is not decelerated just when one yarn among the plurality of yarns is in a cut state, and the roller rotation is not slowed down until at least a plurality of yarns are in a cut state. There is no control to stop it. Therefore, it is possible to suppress a decrease in the tension of the uncut yarns until the plurality of yarns are in the cut state. Therefore, the yarn traveling in the yarn running direction can be reliably cut. Note that "without slowing down the rotation of the roller" means that at least the rotation of the roller is maintained so that the yarn tension on the downstream side of the yarn cutting and suction device in the yarn running direction does not decrease; This includes cases where the speed is increased.

(2) In the spinning take-off machine of the present invention,
moving the cutter and the suction device to approach the plurality of threads while the plurality of threads are running along the arrangement direction;
It is characterized by

According to the spinning take-off machine of (2) above, by bringing the cutter and suction device close to a plurality of stably running threads, the threads can be reliably cut, and the cut threads will not become tangled. You can prevent this from happening.

(3) In the spinning take-off machine of the present invention,
moving the plurality of threads so that the cutter and the suction device approach each other without moving the cutter and the suction device;
It is characterized by

According to the spinning take-off machine described in (3) above, since the yarn can be cut with the cutter and suction device fixed, the yarn can be stably cut without being affected by vibrations caused by the movement of the cutter and suction device. The thread can be cut in this state.

(4) In the spinning take-off machine of the present invention,
Both the plurality of threads, the cutter, and the suction device move so that the plurality of threads, the cutter, and the suction device approach each other.
It is characterized by

According to the spinning take-off machine described in (4) above, both the plurality of yarns, the cutter, and the suction device move so that the plurality of yarns, the cutter, and the suction device approach each other. By doing this, all of the plurality of threads Y are sequentially moved one by one while suppressing the amount of movement of the plurality of threads and the movement of the cutter and suction device, and also suppressing the increase in size of the device. It becomes possible to cut and suction.

(5) In the spinning take-off machine of the present invention,
The spacing between the plurality of threads along the arrangement direction is
The plurality of threads, the cutter, and the suction device are configured so that they do not change before and after they approach.
It is characterized by

According to the spinning take-off machine described in (5) above, the intervals between the plurality of yarns do not change between before and after the plurality of yarns, the cutter, and the suction device approach each other, so that the yarns are arranged along the arrangement direction. It becomes possible to reliably cut and suction all of the plurality of threads Y that have been removed one by one.

(6) In the spinning take-off machine of the present invention,
The distance between a first thread of the plurality of threads and a second thread adjacent to the first thread along the arrangement direction is d,
When the relative speed of the cutter and the suction device with respect to the plurality of threads is v,
The thread cutting suction device includes:
When cutting and suctioning the plurality of threads in sequence, the plurality of threads, the cutter, and the suction device are arranged so that the plurality of threads, the cutter, and the suction device approach each other with the relationship v≦5d. at least one of the device and the device moves;
It is characterized by

According to the spinning take-off machine described in (6) above, the plurality of yarns come close to the cutter and the suction device due to the relationship v≦5d, so that the yarns traveling in the yarn running direction are cut one by one in order. Become so. Therefore, while reliably cutting the running yarn one by one, it is possible to suppress the occurrence of the cutter blade spilling in a short period of time.

(7) In the spinning take-off machine of the present invention,
The control device includes:
The rotation of the roller is not decelerated until all of the plurality of threads running in the arrangement direction are in a cut state, and the roller is stopped when all of the plurality of threads are in a cut state. control,
It is characterized by

According to the spinning take-off machine described in (7) above, all of the plurality of yarns traveling in the yarn running direction can be reliably cut in a state where decrease in yarn tension is suppressed.

In addition, in the spinning take-off machine described in (1) to (7) above, the "cut state" includes not only the state where the yarn is actually cut but also the state where the thread is considered to have been cut. .

Further, the spinning take-off machine according to the present invention does not necessarily have all of the configurations described in (1) to (7) above. For example, in the invention related to the spinning take-off machine described in (1) above, all of the configurations described in (2) to (7) above are not essential. Furthermore, the present invention may include any combination of the configuration described in (1) above and the configuration described in any of (2) to (7) above, within a range where consistency can be achieved. It can also be used as a spinning take-off machine according to.

According to the present invention, it is possible to provide a spinning take-off machine that can reliably cut yarn using a yarn cutting and suction device.

1 is a schematic configuration showing an example of a spinning take-off machine according to the present embodiment. It is a schematic diagram showing an example of a thread regulation guide and a thread cutting suction device concerning this embodiment. 1 is an example of a block diagram schematically showing the electrical configuration of the spinning take-off machine according to the present embodiment. 2 is a flowchart illustrating an example of processing at the time of operation stop in the present embodiment. FIG. 2 is a diagram illustrating the operation of cutting and suctioning a plurality of yarns by the yarn cutting and suction device in the present embodiment, and (A) is a diagram showing that only the yarn on the most one side is being cut and suctioned. As an example, (B) is an example of a diagram showing that only the yarn on the most one side and the yarn adjacent to this yarn on the other side are cut and suctioned. It is a schematic diagram showing an example of a thread regulation guide and a thread cutting suction device concerning a 1st modification. It is a schematic diagram showing an example of a thread regulation guide and a thread cutting suction device concerning a 2nd modification.

Embodiments of the present invention will be described below with reference to the drawings. In addition, for convenience of explanation, each direction of the up-down direction, the left-right direction, and the front-back direction is as shown in each figure mentioned later.

[1. Overview of spinning take-off machine]
First, an overview of a spinning take-off machine 1 according to an embodiment of the present invention (hereinafter referred to as "this embodiment") will be described with reference to FIG. FIG. 1 is a schematic diagram showing an example of a spinning take-off machine 1 according to the present embodiment.

The spinning take-off machine 1 mainly includes, for example, a spinning device 2, an oil supply guide 3, a yarn regulation guide 20, a yarn cutting/suction device 30, and two godet rollers (a first godet roller 4a, a second godet roller) that stretch the yarn Y. 4b), a yarn winding device 10 that winds up the stretched yarn Y, and a control device 50 (see FIG. 3, which will be described later).

The spinning device 2 has a plurality of nozzles 2a, and a high temperature liquid molten polymer (thread material) is continuously extruded from each nozzle 2a. The thread material extruded from each spinneret 2a is cooled and solidified, and is spun out as a single thread Y consisting of a plurality of filaments F. In this way, a plurality of yarns Y are spun from a plurality of spinnerets 2a. The plurality of filaments F are made of a molten fiber material such as polyester.

The oil supply guide 3 is disposed below the spinning device 2 and applies oil to the plurality of yarns Y spun from the spinneret 2a of the spinning device 2. The oil supply guide 3 defines a constant interval between adjacent yarns Y in the left-right direction (the arrangement direction of the present invention).

The thread regulation guide 20 is provided below the oil supply guide 3 and above the first godet roller 4a.

The yarn cutting and suction device 30 is a device that cuts and suctions the plurality of yarns Y spun from the spinneret 2a of the spinning device 2, and is disposed downstream of the oil supply guide 3 in the yarn running direction. Since a plurality of yarns Y continue to be spun continuously from the spinneret 2a of the spinning device 2 even if the processing is interrupted, the yarn cutting and suction device 30 can be used even if the processing downstream of the yarn cutting and suction device 30 is interrupted. While spinning, the plurality of yarns Y that continue to be spun are cut and sucked. Details of the thread cutting and suction device 30 will be described later.

The two godet rollers 4a and 4b take up the yarn Y to which the oil has been applied by the oil supply guide 3, and send it to the yarn winding device 10 disposed below. The second godet roller 4b is disposed on the downstream side of the first godet roller 4a in the thread running direction, and at the rear and upper portion of the first godet roller 4a. The first godet roller 4a and the second godet roller 4b are driven by a first drive motor 5a and a second drive motor 5b, respectively (see FIG. 3, which will be described later). Note that the number of godet rollers is not limited to two.

The yarn winding device 10 is a device for winding a plurality of yarns Y sent from two godet rollers 4a and 4b, and mainly includes, for example, a swing point guide 11, a traverse guide 12, a winding shaft 13, and a turret. 14, a main body frame 15, and a contact roller 16.

The fulcrum guide 11 has a plurality of fulcrum point guides 11 corresponding to each of the plurality of yarns Y, and distributes the plurality of yarns Y sent from the second godet roller 4b, respectively. The traverse guide 12 has a plurality of traverse guides 12 corresponding to each of the plurality of threads, and traverses the threads Y distributed by the plurality of swing point guides 11, respectively. The winding shaft 13 includes, for example, two winding shafts 13 having the same axial direction. A plurality of bobbins B are mounted on the winding shaft 13 in series along the shaft center. The turret 14 has a rotatable disk shape and supports one end of each of the two winding shafts 13. The main body frame 15 rotatably supports the turret 14. The contact roller 16 is movable in the vertical direction with respect to the main body frame 15, and can be moved toward and away from the bobbin B mounted on the winding shaft 13.

[2. Thread cutting suction device]
FIG. 2 is a schematic diagram showing an example of the thread regulation guide 20 and thread cutting/suction device 30 according to the present embodiment.

As shown in FIG. 2, the yarn cutting and suction device 30 is located immediately upstream of the yarn regulation guide 20 in the yarn running direction, and on the left side of the yarn path of the plurality of yarns Y that are arranged in the left-right direction. It is located. Note that, although the number of threads Y is 12, for example, the number of threads Y is not limited to this. In addition, in FIG. 2, regarding the plurality of threads Y, all of the plurality of threads Y should normally be labeled, but for convenience, only three threads Y are labeled (see FIGS. 5 to 5 below). The same applies to Figure 7).

The thread regulating guide 20 has a comb-teeth shape having a plurality of grooves 20a arranged in the left-right direction corresponding to each of the plurality of threads Y. The plurality of threads Y are passed through the plurality of grooves 20a, respectively. The yarn regulating guide 20 defines the horizontal intervals of the plurality of yarns Y wound around the godet rollers 4a and 4b to be constant by the horizontal intervals of the plurality of grooves 20a. Note that in FIG. 2, although all of the plurality of grooves 20a should normally be labeled, only three grooves 20a are labeled for convenience. The same applies to 7).

The thread cutting and suction device 30 mainly includes, for example, a holder 31 serving as a base, a cutter 32 that cuts the thread Y, a suction device 35 that sucks the thread Y cut by the cutter 32, and a suction device 35 that uses the cutter 32 to arrange the thread Y. It has an air cylinder 37 that can be moved in the direction (left-right direction in FIG. 2).

The cutter 32 includes a blade portion 33 that can cut the plurality of threads Y one by one or a plurality of threads together, and a blade holding member 34 that holds the blade portion 33.

The suction device 35 is for suctioning the plurality of threads Y cut by the blade portion 33 of the cutter 32. The suction device 35 includes a suction source (not shown) and a cylindrical member 36 connected to the suction source via a solenoid valve 42 (see FIG. 3 described later). A blade holding member 34 is attached to the lower surface of the cylindrical member 36. With the blade holding member 34 attached to the lower surface of the cylindrical member 36, the blade 33 is located near the suction port 36a at the right end of the cylindrical member 36. A suction force that suctions the cut thread Y is generated in the suction port 36a. The thread Y cut by the cutter 32 is sucked through the suction port 36a.

The air cylinder 37 moves the cutter 32 and the suction device 35 (more specifically, the cylinder member 36) relative to the plurality of yarns Y. The air cylinder 37 has a cylinder rod 37a, and is provided within the holder 31 serving as a base. The cylinder rod 37a is connected to the cylindrical member 36 via the cutter 32 (more specifically, the blade holding member 34). When the air cylinder 37 is driven, the cylinder rod 37a expands and contracts in the left-right direction, and the cutter 32 and the suction device 35 move forward and backward in the left-right direction. Note that even if the cylinder rod 37a expands or contracts, the holder 31 does not move.

The cylinder rod 37a shown in FIG. 2 is in a contracted state. When the cylinder rod 37a is in the contracted state, the cutter 32 is in a retracted position where it cannot cut any yarn Y. When the cylinder rod 37a moves from the contracted state to the expanded state (toward the right in FIG. 2), the cutter 32 and the cylindrical member 36 advance to the right (that is, the direction in which they approach the plurality of threads Y), and the blade portion 33 allows the thread Y to be cut. In this embodiment, the left side in the left-right direction corresponds to one side in the arrangement direction of the present invention, and the right side in the left-right direction corresponds to the other side in the arrangement direction of the present invention.

In this embodiment, the cutter 32 and the suction device 35 are configured to be moved in the arrangement direction by operating the cylinder rod 37a, but the present invention is not limited to this. The gear may be rotated by a motor for movement.

[3. Control device]
FIG. 3 is an example of a block diagram schematically showing the electrical configuration of the spinning take-off machine 1 according to the present embodiment.

As shown in FIG. 3, the control device 50 is capable of receiving at least an operation stop signal and an operation start signal.The operation stop signal and the operation start signal are generated based on, for example, an operator's operation. Further, the operation stop signal is also generated when cutting of the thread Y is detected, that is, when a thread cutting signal is received.

The control device 50 is electrically connected to at least the first solenoid valve 42, the second solenoid valve 38, the first drive motor 5a, the second drive motor 5b, and the yarn winding device drive source 17. ing.

The first electromagnetic valve 42 switches the connection state between the suction source (not shown) and the cylindrical member 36 (see FIG. 2). For example, while the spinning take-off machine 1 is in operation, the connection between the suction source 40 and the cylinder member 36 is cut off, and no suction force for suctioning the cut yarn Y is generated at the suction port 36a. When the control device 50 receives the operation stop signal, it operates the first electromagnetic valve 42, connects the suction source 40 and the cylinder member 36, and applies suction force to the suction port 36a to suction the cut yarn Y. Occur.

The second electromagnetic valve 38 is connected to the air cylinder 37 and switches the expansion/contraction state of the cylinder rod 37a (see FIG. 2). For example, when the second solenoid valve 38 is operated to the first position, compressed air is supplied to the air cylinder 37 so that the cylinder rod 37a moves in the expansion direction. Furthermore, when the second solenoid valve 38 operates to the second position, compressed air is supplied to the air cylinder 37 so that the cylinder rod 37a moves in the contraction direction. When the second solenoid valve 38 is in the neutral position, the cylinder rod 37a is held at that position. During operation of the spinning take-off machine 1, the cylinder rod 37a is held in a contracted state.

The first drive motor 5a is a drive source for rotating the first godet roller 4a. The second drive motor 5b is a drive source for rotating the second godet roller 4b.

The thread winding device drive source 17 is a drive source for driving the thread winding device 10. The thread winding device drive source 17 corresponds to, for example, a motor (not shown) for rotating the turret 14, a motor (not shown) for rotating each of the two winding shafts 13, and the like.

[4. Processing when operation is stopped]
Next, FIG. 4 describes the operation stop process executed by the control device 50 when stopping the operation of the spinning take-off machine 1 (see FIG. 1) and the operation of the yarn cutting suction device 30 during the operation stop process. This will be explained with reference to FIG.

FIG. 4 is a flowchart showing an example of an operation stop process among various processes executed by the control device 50 in this embodiment. Note that the flowchart shown in FIG. 4 is a flowchart for convenience in explaining this embodiment. FIG. 5 is a diagram illustrating the operation of cutting and suctioning a plurality of yarns Y by the yarn cutting and suction device 30 in this embodiment, and shows (A) the closest one among the plurality of yarns Y1 to Y12 in the arrangement direction. An example of a diagram showing that only the thread Y1 on one side is cut and sucked, (B) Among the plurality of threads Y1 to Y12, the thread Y1 and the thread adjacent to the other side in the arrangement direction than the thread Y1 It is a figure which shows that only Y2 is cut and suctioned.

During operation of the spinning take-off machine 1 (see FIG. 1), the cutter 32 and the cylinder member 36 are in the retracted position (the position shown in FIG. 2). At this time, the connection between the suction source (not shown) and the cylinder member 36 is cut off, and no suction force is generated from the suction port 36a. Further, the cylinder rod 37a is in a contracted state. Further, although it is unnecessary to explain, during the operation of the spinning take-up machine 1, the first drive motor 5a, the second drive motor 5b, and at least one of the two take-up shafts 13 are rotated. The motor (not shown) is rotating.

As shown in FIG. 4, when the control device 50 receives the operation stop signal (in the case of a Yes determination in S1 shown in FIG. 4), the control device 50 moves the process to S2. On the other hand, if the operation stop signal is not received (in the case of No determination in S1 shown in FIG. 4), the processes of S1 to S7 shown in FIG. 4 are not executed.

In S2, the control device 50 controls the suction source (not shown) and the cylindrical member 36 to be in a connected state. Specifically, the control device 50 connects the suction source and the cylinder member 36 by operating the first electromagnetic valve 42 . When the suction source and the cylinder member 36 are connected, it becomes possible to suction the thread Y from the suction port 36a in the direction of the arrow shown in FIG. 5(A). The control device 50 executes the process of S3 following the process of S2.

In S3, the control device 50 controls the cutter 32 and the suction device 35 to start moving toward the plurality of yarns Y, that is, from one side to the other side in the arrangement direction. Specifically, the control device 50 operates the second solenoid valve 38 to the first position. When the second solenoid valve 38 operates to the first position, compressed air is supplied to the air cylinder 37 so that the cylinder rod 37a operates in the expanding direction (rightward in FIG. 5). When the cylinder rod 37a operates in the expanding direction, both the cutter 32 and the suction device 35 move from one side to the other side (rightward in FIG. 5) in the arrangement direction. That is, the yarn regulation guide 20 does not move, but the yarn cutting and suction device 30 moves so that the plurality of yarns Y and the yarn cutting and suction device 30 approach each other.

By the way, when the diameter of the yarn Y is large, it may be difficult for the blade portion 33 to cut the plurality of yarns Y at once. Further, when the blade section 33 cuts a plurality of yarns Y at once, excessive shearing force due to the yarn Y running in the yarn running direction (downward in FIG. 5) acts on the blade section 33, causing blade spillage. There is a risk.

Therefore, in this embodiment, the cutter 32 and the suction device 35 are moved from one side in the arrangement direction to the other side (Fig. 5 (to the right of) at low speed. The moving speed of the cutter 32 and the suction device 35 from one side to the other in the arrangement direction is, for example, conventionally 57 mm/sec, but in this embodiment, it is approximately one-third of 20 mm/sec. It is said that the amount of Note that the moving speed of the cutter 32 and the suction device 35 from one side to the other side in the arrangement direction can be made low by, for example, slowing down the operating speed of the cylinder rod 37a that operates in the expansion direction. can.

As shown in FIG. 5(A), among the 12 threads Y1 to Y12 arranged in the arrangement direction, the thread Y1 on the one side most in the arrangement direction and the thread adjacent to the thread Y1 on the other side in the arrangement direction Let the distance from Y2 be d. Also, let t be the time from when the yarn Y1 is cut to when the yarn Y2 is cut, and let v be the moving speed of the cutter 32 and the suction device 35 that move from one side to the other in the arrangement direction. do. At this time, the cutter 32 and the suction device 35 move from one side to the other side in the arrangement direction at a moving speed that satisfies the relationship "v≦d/t". By doing this, after the yarn Y1 is reliably cut and suctioned as shown in FIG. 5(A), the yarn Y2 is cut and suctioned as shown in FIG. 5(B). Become. Note that in this embodiment, the above-mentioned interval d is 4 mm. Further, as described above, the moving speed v of the cutter 32 and the suction device 35 is 20 mm/sec. Since a proportional relationship is established between the above-mentioned interval d and the moving speed v of the cutter 32 and the suction device 35, the above-mentioned time t is approximately 5 seconds. That is, it is preferable to move the cutter 32 and the suction device 35 from one side to the other side in the arrangement direction at a moving speed that satisfies the relationship "v≦5d".

By the way, according to the experimental results conducted by the inventor when the moving speed v of the cutter 32 and the suction device 35 was 20 mm/sec, and the distance d between the yarn Y1 and the yarn Y2 was 4 mm, it was found that regardless of the wire diameter, that is, thick brand Even if the line type was 100%, the yarn Y could be cut one by one with 100% probability. Also, in the experimental results in which the moving speed v of the cutter 32 and the suction device 35 was 20 mm/sec, and the distance d between the yarn Y1 and the yarn Y2 was 6 mm, there was a 100% probability that the yarn I was able to cut Y one by one. However, if the moving speed v of the cutter 32 and the suction device 35 is set to 57 mm/sec, which is the same as before, no matter whether the distance d between the yarn Y1 and the yarn Y2 is 4 mm or 6 mm, approximately 20% of the It was possible to cut thread Y only with probability.

After executing the process of S3, the control device 50 moves to the process of S4. By the way, when cutting the yarn Y running in the yarn running direction with the cutter 32, if the tension of the yarn Y running in the yarn running direction decreases, it may not be possible to cut the yarn Y well. If the yarn Y running in the yarn running direction cannot be cut well, the yarn Y cannot be suctioned properly from the suction port 36a, and the cut yarn Y may get tangled below the cutter 32.

Therefore, the control device 50 does not immediately stop the rotating winding shaft 13 based on receiving the operation stop signal, but after determining that all of the plurality of yarns Y are in the cut state, ( S4), and the first drive motor 5a and second drive motor 5b are stopped (S5). In other words, when there are, for example, 12 threads Y, the rotation of the first godet roller 4a and the second godet roller 4b is stopped after all of the 12 threads Y1 to Y12 are cut. . Therefore, the rotation of the first godet roller 4a and the second godet roller 4b continues unless it is determined that all of the 12 threads Y1 to Y12 are in the cut state (unless the determination is Yes in S4). By doing this, it becomes possible to reliably cut all the yarns Y1 to Y12 of the plurality of yarns Y traveling in the yarn running direction while suppressing a decrease in tension.

"All Y1 to Y12 of the plurality of threads Y are in a cut state" means not only that all the threads Y1 to Y12 of the plurality of threads Y are actually cut, but also that all the threads Y1 to Y12 of the plurality of threads Y are cut. It is intended to include the state in which it is considered to have occurred. For example, if a plurality of sensors are provided downstream of the yarn regulation guide 20 to detect each of the plurality of yarns Y, and all of the plurality of sensors are unable to detect the yarn Y, all of the plurality of yarns Y Y1 to It can be determined that Y12 is in a disconnected state.

Further, when the blade portion 33 or the suction port 36a reaches the position where all of the plurality of threads Y1 to Y12 are cut, it is directly detected that all of the plurality of threads Y1 to Y12 are cut. However, it can be said that the state is such that all of the plurality of threads Y1 to Y12 are considered to have been cut. Similarly, if all the threads Y1 to Y12 of the plurality of threads Y are cut when the cylinder rod 37a operates to the operating limit in the expanding direction, the cylinder rod 37a operates to the operating limit in the expanding direction. This state can be said to be a state in which all of the plurality of threads Y1 to Y12 are considered to have been cut.

After executing the process of S5, the control device 50 moves to the process of S6. In S6, the control device 50 stops the drive source for the yarn winding device (specifically, the motor for rotating the rotating winding shaft 13). In this way, after the control device 50 receives the operation stop signal, the rotating winding shaft 13 is not immediately stopped, but is kept rotating at least until all of the 12 threads Y1 to Y12 are cut. By maintaining the speed, it is possible to suppress a decrease in the tension of at least the uncut yarn Y on the downstream side of the yarn cutting/suction device 30.

After all 12 threads Y1 to Y12 are cut and suctioned by the suction device 35, the operator uses a suction gun (not shown) while the cutter 32 and suction device 35 are stopped moving. the suction port 36a. After cutting the plurality of threads Y with a cutter (not shown) at the tip of the suction gun, the plurality of threads Y are suctioned and held by the suction gun.

Thereafter, for example, in response to an operator's operation, the control device 50 moves the cutter 32 and The suction device 35 is controlled to start moving. Specifically, the control device 50 operates the second solenoid valve 38 to the second position. When the second solenoid valve 38 operates to the second position, compressed air is supplied to the air cylinder 37 so that the cylinder rod 37a operates in the contraction direction (leftward in FIG. 5). When the cylinder rod 37a operates in the contraction direction, both the cutter 32 and the suction device 35 move from the other side to the one side in the arrangement direction.

[5. Effect】
According to the present embodiment described above, the cutter 32 and the suction device 35 run stably so as to be able to sequentially cut and suction the plurality of yarns Y arranged in the arrangement direction one by one. Move at a slow speed for multiple threads. Therefore, not only can the blade part 33 be prevented from falling out in a short period of time, but also the thread Y cut by the cutter 32 can be reliably suctioned by the suction device 35. Furthermore, it is possible to prevent cut threads from becoming entangled.

Further, according to the present embodiment described above, the control to stop the godet rollers 4a and 4b is not performed until, for example, all of the 12 threads Y1 to Y12 are cut. That is, even if some of the yarns Y among the twelve yarns Y1 to Y12 are in a cut state, the godet rollers 4a and 4b do not stop and do not decelerate to the extent that the tension of the yarns Y decreases. Therefore, the decrease in tension of the uncut yarns Y can be suppressed until all of the 12 yarns Y1 to Y12 are cut. Therefore, all Y1 to Y12 of the yarn Y running in the yarn running direction can be reliably cut.

[6. Expansion example]
In the present embodiment described above, control is not performed to stop the godet rollers 4a and 4b until all of the 12 threads Y1 to Y12 are cut, but this is not necessarily the case. For example, if the yarn Y1 on the most one side in the arrangement direction among the 12 yarns Y1 to Y12 is in a cut state, the godet rollers 4a and 4b will not be controlled to stop, and at least a plurality of yarns Y (for example, the yarn Y1 The control for stopping the godet rollers 4a and 4b may not be performed until the thread Y2) is in the cut state. That is, even if all of the 12 threads Y1 to Y12 are not necessarily cut, at least the thread Y1 can be reliably cut by not stopping the godet rollers 4a and 4b until at least the thread Y1 is cut. It can be cut into.

Furthermore, in the present embodiment described above, the rotation of the first godet roller 4a and the second godet roller 4b is stopped after all of the 12 threads Y1 to Y12 are cut. That is, even if the control device 50 receives the operation stop signal, the control device 50 does not immediately stop the rotation of the two godet rollers 4a, 4b, but continues the rotation while the rotational speed of the two godet rollers 4a, 4b is maintained. ing. However, as long as the decrease in tension of the uncut yarns Y can be suppressed, this is not limited to the above embodiment. During this period, the rotational speed of the two godet rollers 4a, 4b may not be reduced at least. Therefore, the control device 50 increases the rotational speed of the two godet rollers 4a and 4b after receiving the operation stop signal until all of the 12 threads Y1 to Y12 are cut. You can also do this.

Furthermore, in the present embodiment described above, the rotational speeds of the two godet rollers 4a and 4b are not reduced after the control device 50 receives the operation stop signal, but this is not necessarily the case. For example, if the rotational speed of at least one of the two godet rollers 4a, 4b (for example, the first godet roller 4a, which is closer to the yarn cutting/suction device 30 than the second godet roller 4b) is not reduced, it is possible to A decrease in the tension of the thread Y can be suppressed.

Further, in the present embodiment described above, the rotational speed of the godet rollers 4a, 4b is not reduced after the control device 50 receives the operation stop signal, but instead of or in addition to this, the thread cutting suction device Even when the rotational speed of the yarn feed roller disposed downstream of the yarn feed roller 30 is not reduced, a decrease in the tension of the uncut yarn Y can be suppressed.

Further, in the present embodiment described above, the thread regulation guide 20 is provided which has a plurality of grooves 20a arranged in the left-right direction corresponding to each of the plurality of threads Y. However, this thread regulation guide 20 is not an essential configuration for cutting and suctioning the plurality of threads Y by the cutter 32 and the suction device 35 while suppressing a decrease in the tension of the plurality of threads Y. That is, the present invention can also be applied to a spinning take-off machine that does not include the yarn regulation guide 20. Furthermore, although the present invention includes the yarn regulation guide 20, it can also be applied to a spinning take-up machine that retreats from a plurality of yarns Y when the cutter 32 and the suction device 35 cut and suck the yarns Y. .

In addition, in the above-described present embodiment, an example has been described in which the cutter 32 and the suction device 35 are moved with respect to the plurality of yarns Y to bring the plurality of yarns Y closer to the cutter 32 and the suction device 35. However, in order to bring the cutter 32 and the suction device 35 closer to the plurality of threads Y, the present invention is not limited to the example in which the cutter 32 and the suction device 35 are moved relative to the plurality of threads Y. For example, a plurality of threads Y may be moved relative to the cutter 32 and the suction device 35, or the cutter 32 and the suction device 35 may be moved relative to the plurality of threads Y, and the cutter 32 and the suction device 35 may be moved relative to the cutter 32 and the suction device 35. A plurality of threads Y may be moved. These modified examples will be explained below.

[8. Modified example]
Next, a first modification and a second modification in which changes are made to the thread regulating guide 20 and the thread cutting/suction device 30 of this embodiment will be described below. Note that the description of the components common to the thread cutting and suction device 30 described above will be omitted, and the components different from the thread cutting and suction device 30 will be mainly described.

[8-1. 1st modification]
FIG. 6 is a schematic diagram showing an example of a thread regulating guide 20A and a thread cutting/suction device 30A according to the first modification. Like the thread regulation guide 20 (see FIG. 2, for example), the thread regulation guide 20A has a comb-like shape with a plurality of grooves 20Aa arranged in the left-right direction corresponding to the plurality of threads Y. A plurality of threads Y are passed through each of the grooves 20Aa.

The thread cutting and suction device 30A according to the first modification has a feature that when cutting and suctioning a plurality of threads Y, the thread regulating guide 20A moves from the other side to the one side in the arrangement direction. This differs from the yarn cutting/suction device 30 in which the cutter 32 and the suction device 35 move from one side to the other. That is, in this first modification, the thread cutting and suction device 30A does not move, but the thread regulation guide 20A moves so that the plurality of threads Y and the thread cutting and suction device 30A approach each other.

As shown in FIG. 6, the thread cutting and suction device 30A does not include an air cylinder 37 (see, for example, FIG. 2), but includes an air cylinder 39 whose expansion and contraction stroke is larger than that of the air cylinder 37. The air cylinder 39 moves the thread regulation guide 20A relative to the cutter 32 and the suction device 35. The air cylinder 39 has a cylinder rod 39a, and is provided within the holder 31 serving as a base. The cylinder rod 39a is connected to one end of the thread regulation guide 20A in the arrangement direction. When the air cylinder 39 is driven, the cylinder rod 39a expands and contracts in the left-right direction, and accordingly, the thread regulation guide 20A moves forward and backward in the left-right direction. The position of the yarn regulating guide 20A shown in FIG. 6 is the position when the spinning take-off machine 1 is in operation. Note that even if the cylinder rod 39a expands or contracts, the holder 31 does not move.

In addition, in S3 of the operation stop processing, the control device 50 controls the cutter 32 and the suction device 35 to start moving from one side to the other side in the arrangement direction. The yarn regulating guide 20A is controlled to start moving from the other side toward the one side. Specifically, the cylinder rod 39a is operated in the contraction direction, and the thread regulation guide 20A is moved from the other side to the one side (leftward in FIG. 5) in the arrangement direction. At this time, the thread regulation guide 20A moves one thread from the other side in the arrangement direction while maintaining the distance in the arrangement direction between one thread Yn (n is an integer) and the thread Y(n+1) adjacent to this one thread Yn. move towards the side. That is, the distance between the threads Yn and the threads Y(n+1) along the arrangement direction remains the same before and after the plurality of threads Y, the cutter 32, and the suction device 35 approach each other. In this way, the cutter 32 and the suction device 35 move relative to the plurality of yarns Y.

The thread regulation guide 20A moves at a low speed of, for example, 20 mm/sec from the other side to the one side (leftward in FIG. 6) in the arrangement direction. Note that the moving speed of the thread regulating guide 20A from the other side to the one side in the arrangement direction can be made low, for example, by slowing down the operating speed of the cylinder rod 39a that operates in the contraction direction.

For example, among the plurality of threads Y arranged in the arrangement direction, the distance between one thread Yn (n is an integer) and the thread Y(n+1) adjacent to thread Yn on the other side in the arrangement direction is all d. . Also, let t be the time from when the yarn Yn is cut to when the yarn Y(n+1) is cut, and let u be the moving speed of the yarn regulating guide 20A that moves from the other side to the one side in the arrangement direction. shall be. At this time, the thread regulation guide 20A is moved so that the relationship of "u≦d/t", that is, the relationship of "u≦d/5" is established while ensuring the distance d between the threads Yn and Y(n+1). It can be moved from the other side to the one side in the arrangement direction at a speed. Therefore, it becomes possible to sequentially cut and suck the plurality of threads Y arranged in the arrangement direction one by one.

In this way, according to the yarn regulation guide 20A and the yarn cutting/suction device 30A according to the first modification, it is possible to achieve the same effects as those described in the above-described present embodiment. That is, since it is possible to sequentially cut and suck the plurality of threads Y arranged in the arrangement direction one by one, it is possible not only to prevent the blade part 33 from becoming loose in a short period of time, but also to prevent the cutter 32 The cut thread Y can be reliably suctioned by the suction device 35. Further, the control to stop the godet rollers 4a and 4b is not performed until all of the 12 threads Y1 to Y12 are cut, for example. Therefore, similar to the effects described in the present embodiment described above, it is possible to suppress a decrease in the tension of the uncut yarns Y until all of the 12 yarns Y1 to Y12 are in the cut state. Therefore, all Y1 to Y12 of the yarn Y running in the yarn running direction can be reliably cut.

Furthermore, according to the yarn regulating guide 20A and the yarn cutting/suction device 30A according to the first modification, the yarn Y can be cut in a fixed state without moving the cutter 32, so that the influence of vibrations etc. due to movement can be avoided. The thread Y can be cut in a stable state without being subjected to stress. Further, the yarn regulation guide 20A moves while ensuring the distance d between the yarn Yn (n is an integer) and the yarn Y(n+1). That is, the above-mentioned interval d is different between when the spinning take-off machine 1 is operating (that is, during spinning production) and when the spinning take-off machine 1 is stopped and the yarn Y is being cut and sucked by the yarn cutting and suction device 30A. It is the same. Therefore, even if the thread regulating guide 20A moves relative to the thread cutting and suction device 30A, it is possible to reliably cut and suction the plurality of threads Y arranged in the arrangement direction one by one. Become.

Furthermore, the yarn regulating guide 20A and the yarn cutting/suction device 30A according to the first modification can be expanded in the same manner as the expansion example described in the above-described present embodiment.

Furthermore, in the first modification described above, it has been explained that when the plurality of threads Y are cut and suctioned, the thread regulation guide 20A moves so that the plurality of threads Y come closer to the thread cutting and suction device 30A. The means for bringing the plurality of yarns Y closer to the yarn cutting and suction device 30A is not limited to the yarn regulating guide 20A. For example, instead of the thread regulating guide 20A having a plurality of grooves 20Aa arranged in the left-right direction corresponding to a plurality of threads Y, it may have one or more hook-shaped grooves through which a plurality of threads Y can pass. It can also be used as a guide. In this case, the plurality of threads Y arranged in the arrangement direction are cut by moving the guide from the other side to the one side in the arrangement direction so that the plurality of threads Y are caught in one or more grooves. and suction.

[8-2. Second modification]
FIG. 7 is a schematic diagram showing an example of a thread regulating guide 20A and a thread cutting/suction device 30B according to a second modification. The thread regulation guide 20A has the same configuration as the thread regulation guide 20A according to the first modification, and a plurality of threads Y are passed through each of the plurality of grooves 20Aa.

In the thread cutting and suction device 30B according to the second modification, when cutting and suctioning a plurality of threads Y, the cutter 32 and the suction device 35 are moved from one side to the other side in the arrangement direction, and the suction device 35 is moved in the arrangement direction. Both the movement of the thread regulating guide 20A from the other side toward the one side in . The thread cutting and suction device 30B according to the second modification is configured such that the cutter 32 and the suction device 35 move relative to the plurality of threads Y in this manner. That is, in this second modification, both the thread cutting and suction device 30B and the thread regulation guide 20A move so that the plurality of threads Y and the thread cutting and suction device 30B approach each other.

As shown in FIG. 7, the thread cutting suction device 30B includes the air cylinder 37 described with reference to FIGS. 2, 5(A), and 5(B) in the present embodiment described above, and the first modified In the example, both the air cylinder 39 and the air cylinder 39 described with reference to FIG. 6 are provided.

Further, in S3 of the operation stop processing, the control device 50 controls the cutter 32 and the suction device 35 to start moving from one side in the arrangement direction to the other side, and also controls the cutter 32 and the suction device 35 to start moving from the other side in the arrangement direction. The yarn regulation guide 20A is controlled to start moving toward one side. Specifically, the cylinder rod 37a is operated in the expansion direction, and the cylinder rod 39a is operated in the contraction direction. In this way, the cutter 32 and the suction device 35 can be moved relative to the plurality of yarns Y. In addition, the thread regulation guide 20A moves from the other side in the arrangement direction to one side while maintaining the distance in the arrangement direction between one thread Yn (n is an integer) and the thread Y(n+1) adjacent to this one thread Yn. move towards.

Further, it is preferable that the relative speed of the cutter 32 and the suction device 35 with respect to the plurality of threads Y is set to move at a low speed of, for example, 20 mm/sec. For example, by slowing down both the operating speed of the cylinder rod 37a that operates in the expanding direction and the operating speed of the cylinder rod 39a that operates in the contracting direction, the cutter 32 and suction device 35 for the plurality of yarns Y can be The relative speed of can be made low.

For example, among the plurality of threads Y arranged in the arrangement direction, the distance between one thread Yn (n is an integer) and the thread Y(n+1) adjacent to thread Yn on the other side in the arrangement direction is all d. . In addition, the time from when the yarn Yn is cut to when the yarn Y(n+1) is cut is t, and the moving speed of the cutter 32 and the suction device 35 that move from one side to the other in the arrangement direction. Let the length be V, and let U be the moving speed of the thread regulating guide 20A moving from the other side to the one side in the arrangement direction. At this time, the moving speed of the cutter 32 and the suction device 35 with respect to the yarn Y is (V+U). At this time, each of the cutter 32, the suction device 35, and the thread regulating guide 20A is moved at a moving speed that satisfies the relationship of "V+U≦d/t", that is, the relationship of "V+U≦d/5" (in particular, The regulation guide 20A can be moved while ensuring the distance d between the yarn Yn and the yarn Y(n+1). Therefore, it becomes possible to sequentially cut and suck the plurality of threads Y arranged in the arrangement direction one by one. Further, the yarn regulation guide 20A moves while ensuring the distance d between the yarn Yn (n is an integer) and the yarn Y(n+1). That is, the above-mentioned interval d is the same when the spinning take-off machine 1 is operating and when the spinning take-off machine 1 is stopped and the yarn Y is being cut and sucked by the yarn cutting and suction device 30B. Therefore, even if the thread regulation guide 20A moves relative to the thread cutting and suction device 30B, it is possible to reliably cut and suction the plurality of threads Y arranged in the arrangement direction one by one. Become.

In this manner, the yarn regulating guide 20A and the yarn cutting/suction device 30B according to the second modification can achieve the same effects as those described in the present embodiment described above. That is, since it is possible to sequentially cut and suck the plurality of threads Y arranged in the arrangement direction one by one, it is possible not only to prevent the blade part 33 from becoming loose in a short period of time, but also to prevent the cutter 32 The cut thread Y can be reliably suctioned by the suction device 35. Further, the control to stop the godet rollers 4a and 4b is not performed until all of the 12 threads Y1 to Y12 are cut, for example. Therefore, similar to the effects described in the present embodiment and the first modification described above, it is possible to suppress the decrease in the tension of the partially cut threads Y until all of the 12 threads Y1 to Y12 are in the cut state. . Therefore, all Y1 to Y12 of the yarn Y running in the yarn running direction can be reliably cut.

Furthermore, according to the yarn regulation guide 20A and the yarn cutting suction device 30B according to the first modification, the amount of movement of the cutter 32 and the suction device 35 is compared with that of the cutter 32 and the suction device 35 described in the above-described present embodiment. Since the air cylinder 37 can be made smaller, the air cylinder 37 can be made more compact. Furthermore, since the amount of movement of the thread regulating guide 20A can be made smaller than that of the thread regulating guide 20A described in the first modification, the air cylinder 39 can be made more compact. In this way, the amount of movement of the thread cutting and suction device 30B for the plurality of threads, which is necessary to cut and suction the plurality of threads Y, is determined by the amount of movement of the cutter 32 and the suction device 35, and the amount of movement of the thread regulation guide 20A. It can be dispersed into Therefore, all of the plurality of threads Y arranged in the arrangement direction are sequentially cut one by one while suppressing the enlargement of the peripheral equipment (particularly the air cylinder 37 and the air cylinder 39) of the thread cutting/suction device 30B and the overall device. It becomes possible to cut and suction.

Furthermore, the yarn regulation guide 20A and the yarn cutting/suction device 30B according to the second modification can be expanded in the same manner as the expansion example described in the above-described present embodiment.

In addition, in the above-mentioned second modification, when the plurality of threads Y are cut and suctioned, both the thread cutting and suction device 30B and the thread regulation guide 20A are moved so that the plurality of threads Y and the thread cutting and suction device 30B come close to each other. Although it has been explained that the threads move, the means for bringing the plurality of threads Y closer to the thread cutting/suction device 30B is not limited to the thread regulation guide 20A. For example, as explained in Modification 1, instead of the thread regulating guide 20A having a plurality of grooves 20Aa arranged in the left-right direction corresponding to a plurality of threads Y, for example, a hook through which a plurality of threads Y can be passed. The guide may have one or more grooves in the shape of the groove.

1 Spinning take-off machine 32 Cutter 30 Yarn cutting/suction device 4a First godet roller 4b Second godet roller 50 Control device Y Yarn

(2) In the spinning take-off machine of the present invention,
moving the cutter and the suction device to approach the plurality of yarns while the plurality of yarns are running along the yarn running direction;
It is characterized by

As shown in FIG. 3, the control device 50 is capable of receiving at least an operation stop signal and an operation start signal . The operation stop signal and the operation start signal are generated based on an operator's operation, for example. Further, the operation stop signal is also generated when cutting of the thread Y is detected, that is, when a thread cutting signal is received.

Claims (7)

A thread cutting and suction device including a cutter capable of cutting the plurality of threads traveling along the arrangement direction of the plurality of threads, and a suction device capable of sucking the threads cut by the cutter;
a roller disposed downstream of the thread cutting and suction device in the thread running direction and feeding the plurality of running threads in the thread running direction;
a control device capable of controlling the roller to stop when the yarn is cut and suctioned by the yarn cutting and suction device;
Equipped with
By bringing the plurality of threads close to the cutter and the suction device, the plurality of threads can be sequentially cut and suctioned,
The control device includes:
Control is performed such that the rotation of the roller is not decelerated even if one of the plurality of threads is in a cut state, and the roller is stopped based on at least a plurality of threads being in a cut state.
A spinning take-off machine characterized by: moving the cutter and the suction device to approach the plurality of threads while the plurality of threads are running along the arrangement direction;
The spinning take-off machine according to claim 1, characterized in that: moving the plurality of threads so that the cutter and the suction device approach each other without moving the cutter and the suction device;
The spinning take-off machine according to claim 1, characterized in that: Both the plurality of threads, the cutter, and the suction device move so that the plurality of threads, the cutter, and the suction device approach each other.
The spinning take-off machine according to claim 1, characterized in that: The spacing between the plurality of threads along the arrangement direction is
The plurality of threads, the cutter, and the suction device are configured so that they do not change before and after they approach.
The spinning take-off machine according to any one of claims 1 to 4, characterized in that: The distance between a first thread of the plurality of threads and a second thread adjacent to the first thread along the arrangement direction is d,
When the relative speed of the cutter and the suction device with respect to the plurality of threads is v,
When cutting and suctioning the plurality of threads in sequence, the plurality of threads, the cutter, and the suction device are arranged so that the plurality of threads, the cutter, and the suction device approach each other with the relationship v≦5d. at least one of the device and the device moves;
The spinning take-off machine according to any one of claims 1 to 5, characterized in that: The control device includes:
The rotation of the roller is not decelerated until all of the plurality of threads running in the arrangement direction are in a cut state, and the roller is stopped when all of the plurality of threads are in a cut state. control,
The spinning take-off machine according to any one of claims 1 to 6, characterized in that:

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