JP3707413B2 - Yarn winder with thread thickness detector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a yarn winder equipped with a yarn thickness detector, and more particularly to a yarn winder equipped with a zero point adjusting function of the yarn thickness detector.
[0002]
[Prior art]
In a yarn winder equipped with a plurality of winding units that continuously pull up several to several tens of yarn-feeding yarn bodies and wind them around a take-up tube. Sometimes, a defective portion such as a slab or a nep existing in the middle of a yarn is detected and removed. In order to detect these defective portions, each winding unit has a yarn thickness detector that constantly measures the yarn thickness during winding, and a yarn path between the yarn feeding winding body and the winding winding body. The above-mentioned defective portion is detected as a yarn thickness defect. If a yarn thickness defect is detected during winding, after the yarn is cut by the yarn cutting device, the defective portion is removed in a predetermined yarn joining operation.
[0003]
As the thread thickness detection method in the thread thickness detector, a capacitance type or optical type is often used. In this case, the thickness of the detected yarn is converted into a voltage and grasped. However, since the voltage level on the circuit often fluctuates with time due to various factors, the yarn thickness detection value may vary over time.
[0004]
Therefore, zero point adjustment of the yarn thickness detection value is performed to the clearer controller that receives the yarn thickness detection signal from the yarn thickness detector (also referred to as “yarn clearer”) and sends a cut command to the yarn cutting device based on this signal. It is common practice to provide functionality.
[0005]
The clearer controller performs zero point adjustment (zero point correction) by adjusting circuit constants on the substrate and adjusting the output signal to zero in a state where there is no thread in the thread thickness detector. This zero point adjustment in the absence of yarn is usually performed after the yarn thickness defect is detected and removed, and then the yarn end on the yarn supply winding yarn side and the yarn end on the winding winding yarn side are connected by the yarn joining device. This is done during the splice cycle.
[0006]
[Problems to be solved by the invention]
However, according to the above configuration, the zero point adjustment is performed only during the splicing cycle.Therefore, the zero point adjustment is performed when the yarn joining device has no yarn due to other factors and a long time has passed. I can't do it. In particular, in each winding unit of the yarn winding machine, remove the wound winding body that has been fully wound and filled with a new tube, set a new winding tube, and attach the yarn end. In such a case (when the doffing operation is performed), the doffing operation is not always performed immediately, and it is often the case that a long time elapses without a yarn, and at this time, a zero point shift is likely to occur.
[0007]
For this reason, immediately after the start of winding the yarn after the completion of the doffing operation, the zero point is shifted, so that a normal thickness portion is detected as a yarn thickness defect, and unnecessary yarn cutting is performed. There is often. Then, if useless yarn cutting is performed immediately after the start of yarn winding after completion of the doffing operation, the amount of upper yarn (yarn wound around the winding tube) is still small. When the splicing operation is performed between the upper thread and the lower thread (yarn on the yarn supply winding body), the upper thread wound around the winding tube may be lost due to the suction and capture of the upper thread. If it does so, the winding operation | work of the thread | yarn to a winding winding body cannot be continued automatically, and the fall of work efficiency will be caused. In addition, since the yarn winding machine is usually provided with a large number of winding units, the efficiency is further reduced.
[0008]
The present invention has been made in view of the above circumstances, and reliably prevents wasteful yarn cutting immediately after the start of yarn winding after completion of the doffing operation, and further reduces work efficiency. It aims at providing the yarn winder which suppresses.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problem, a yarn winding machine including the yarn thickness detector according to claim 1, wherein the yarn winding body is pulled up and wound around a winding tube, A yarn winding machine comprising: a plurality of winding units to be removed; and a doffing device for removing the winding winding body and setting a new winding tube and attaching a yarn end to the winding unit. A unit controller that controls each operation of the yarn, a yarn thickness detector disposed on a yarn path between the yarn supply winding body and the winding winding body, and zero point adjustment of the yarn thickness detector A clearer controller having a function, wherein the unit controller transmits a zero point correction signal to the clearer controller during a doffing operation of the doffing device.
[0010]
According to this configuration, the unit controller that controls each operation of the winding unit has a function of transmitting a zero point correction signal to the clearer controller, and performs transmission during the doffing operation of the doffing device. When the doffing operation is completed, the zero point adjustment by the clearer controller is performed. Accordingly, there is no deviation of the zero point in the yarn thickness detection value immediately after the start of the yarn winding after the doffing operation is completed, and it is possible to reliably prevent wasteful yarn cutting. Further, it is possible to prevent the upper yarn wound around the take-up tube from being lost due to the suction and capture of the upper yarn by the yarn splicing operation by useless yarn cutting, and it is possible to suppress a decrease in work efficiency.
In order to prevent a situation in which useless thread cutting is performed immediately after doffing and the upper thread is lost, for example, the upper thread is sucked and captured in the splicing operation after thread cutting. However, it is also conceivable to set a timer or the like so that the yarn thickness defect is not detected until the upper thread is sufficiently wound so that the upper thread is not lost. However, in such a method, there is a possibility that the yarn thickness defect may be mixed in the portion wound around the winding yarn body while the yarn thickness defect is not detected immediately after the start of winding. is there. If a yarn thickness defect is mixed into the wound winding body, thread breakage or uneven dyeing may occur in a subsequent process of processing the wound winding body. However, according to the configuration of the present invention, it is not necessary to detect the yarn thickness defect immediately after the start of winding of the yarn, and it is possible to reliably prevent the yarn thickness defect from being mixed into the wound winding yarn body.
[0011]
A yarn winding machine comprising the yarn thickness detector according to claim 2 is the yarn winding machine according to claim 1, wherein the doffing device is connected to the doffing device and the unit controller via communication means. A predetermined signal is transmitted to the unit controller at a specific timing during a doffing operation, and the unit controller transmits the zero point correction signal to the clearer controller based on a signal received from the doffing device. It is characterized by doing.
[0012]
According to this configuration, the doffing device and the unit controller are provided with communication means, and the unit controller can grasp a specific timing during the doffing operation by the doffing device, and at this specific timing, The unit controller can send a zero point correction signal to the clearer controller. That is, the zero point adjustment can be performed at the same timing every time until the doffing operation is started and the winding is resumed. As a result, the time from the zero point adjustment to the resumption of winding can be made constant each time without variation, and the occurrence of a zero point shift can be effectively suppressed.
[0013]
A yarn winding machine comprising the yarn thickness detector according to claim 3 is the yarn winding machine according to claim 2, wherein the doffing device is disposed so as to be able to travel along the parallel arrangement direction of the plurality of winding units. The communication means performs transmission / reception by non-contact communication.
[0014]
According to this configuration, even in the yarn winding machine including the doffing device that is disposed so as to be able to run along the parallel arrangement direction of the plurality of winding units, the unit controller is performing the doffing operation by non-contact communication. The specific timing can be grasped, and the same effect as in claim 2 can be obtained.
[0015]
A yarn winding machine including the yarn thickness detector according to claim 4, a plurality of winding units that pull up the yarn of the yarn winding body and wind it around a winding tube to form a winding body. A unit controller for controlling each operation of the winding unit, a yarn thickness detector disposed on a yarn path between the yarn supply winding body and the winding winding body, and a yarn thickness detector A yarn winding machine having a clearer controller having a zero point adjustment function, and having an operation means connected to the unit controller, the unit controller in relation to the operation of the operation means, A yarn winding machine provided with a yarn thickness detector, which controls the winding unit to be in a doffing preparation state and outputs a zero point correction signal to the clearer controller.
[0016]
According to this configuration, the unit controller that controls each operation of the winding unit has a function of transmitting a zero point correction signal to the clearer controller, and is further controlled to make the winding unit ready for doffing. Since the operation means for connecting is connected, and the zero point correction signal is transmitted in accordance with the operation of the operation means, the automatic doffing device is not provided, and the operator manually replaces the winding tube and adds a new one. Even when performing a threading operation on a simple winding tube, the zero point adjustment by the clearer controller is performed when the doffing operation is completed. Accordingly, there is no deviation of the zero point in the yarn thickness detection value immediately after the start of the yarn winding after the doffing operation is completed, and it is possible to reliably prevent wasteful yarn cutting. Further, it is possible to prevent the upper yarn wound around the take-up tube from being lost due to the suction and capture of the upper yarn by the yarn splicing operation by useless yarn cutting, and it is possible to suppress a decrease in work efficiency.
In order to prevent a situation in which useless thread cutting is performed immediately after doffing and the upper thread is lost, for example, the upper thread is sucked and captured in the splicing operation after thread cutting. However, it is also conceivable to set a timer or the like so that the yarn thickness defect is not detected until the upper thread is sufficiently wound so that the upper thread is not lost. However, in such a method, there is a possibility that the yarn thickness defect may be mixed in the portion wound around the winding yarn body while the yarn thickness defect is not detected immediately after the start of winding. is there. If a yarn thickness defect is mixed into the wound winding body, thread breakage or uneven dyeing may occur in a subsequent process of processing the wound winding body. However, according to the configuration of the present invention, it is not necessary to detect the yarn thickness defect immediately after the start of winding of the yarn, and it is possible to reliably prevent the yarn thickness defect from being mixed into the wound winding yarn body.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a yarn winding machine including a yarn thickness detector according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining a zero point adjustment function of a yarn thickness detector, FIG. 2 is a side view showing a device configuration of a winding unit in a yarn winding machine, and FIG. FIG. 4 is a front view showing a device configuration of the entire winder, and FIG. 4 is a block diagram showing a control configuration of the entire yarn winder.
[0018]
First, the device configuration of the yarn winding device 1 will be described. In FIG. 3, a yarn winding machine 1 travels in the arrangement direction (in the direction of the arrow (L) in FIG. 3) along a number of winding units 2 arranged in parallel and the number of winding units 2. It is comprised from the doffing apparatus 3 which is free.
[0019]
In FIG. 2, a winding unit 2 winds up yarns from a large number of yarn supply winding bodies 5 (yarn supply bobbins or yarn supply packages) in order while splicing them, and takes up a large winding yarn having a predetermined yarn amount. The body 6 (winding package) is formed. The yarn Y to be unwound from the yarn supply winding body 5 supported by the tray 11 is held by a cradle 12 (winding tube support means) and wound up on a winding winding body 6 that rotates around the traverse drum 13. .
[0020]
A solution for assisting the unwinding of the yarn from the yarn supply winding body 5 in order from the bottom to the top (from the upstream side to the downstream side) in the yarn path from the yarn supply winding body 5 to the winding winding body 6 Wrinkle assist device 15, tension applying device 16 for applying a predetermined tension to yarn Y, yarn joining device 20, yarn thickness detector 19 (yarn clearer) for detecting yarn thickness defects such as slabs, A winding unit 2 is configured by providing a waxing device 17 for applying wax and a traverse drum 13.
[0021]
The yarn thickness detection device 19 constantly measures the yarn thickness during winding, and based on the measured yarn thickness detection value, a defect such as a slab is detected as a yarn thickness defect. become. As a detection method of the thread thickness detector 19, a capacitance type or an optical type is used. In either method, the detected thread thickness is converted into a voltage and grasped.
[0022]
When the yarn thickness detector 19 detects a yarn thickness defect under the yarn thickness detector 19, or a full tube (the wound winding body is sufficiently wound with a yarn to become a full package. State) and when doffing (unwinding the wound winding thread body from the winding tube support means, setting (attaching) a new winding tube to the winding tube support means, In the case of attaching (yarning) the yarn end of the yarn supply winding body to the new winding tube), a yarn defect detection signal or a full tube signal is used between the yarn supply winding body 5 and the winding yarn body 6. A cutter 19a (yarn cutting device) is provided for cutting the yarn Y connected at.
[0023]
The tension device 16 is a contact type that applies tension by friction with the yarn, for example, a gate type that engages a pair of comb blades or a disc type that applies tension by sandwiching a yarn between a pair of discs. The tension applying device 16 can adjust the applying tension by an electric signal.
[0024]
As the yarn joining device 20, it is desirable to use a pneumatic yarn joining device (air supplier) in which a swirling air flow is applied to the overlapping portion of both yarn ends. Knotter) can also be used.
[0025]
Above the yarn joining device 20, a suction pipe 21 (upper portion) that sucks and captures the yarn (hereinafter referred to as “upper yarn”) from the winding winding body 6 and moves and guides it into the yarn joining device 20 by a turning operation. A yarn catching guide means), and below the yarn joining device 20, a yarn on the side of the yarn winding body connected to the yarn feeding body 5 (hereinafter referred to as “lower yarn”) is sucked and captured to obtain the yarn joining device 20. A relay pipe 22 (lower thread catching and guiding means) that moves and guides by a turning operation is provided therein.
[0026]
At the end of the relay pipe 22, a lower thread catching port 22a (suction port) for sucking and catching the lower thread, and switching the lower thread catching port 22a to a closed state or an open state, and gripping the lower thread in the closed state A clamping device 22b is provided. As will be described later, the relay pipe 22 is turned up and down by a motor 49 that can be positioned at an arbitrary rotational position. Under the control of the motor 49, a lower end position (yarn end catching position) a and a yarn joining device A standby position b in a downward state below 20, a doff standby position c in an upward state above the yarn joining device 20, and an introduction position (upper end position) d to the yarn joining device 20 can be taken. The clamp device 22b hits the stopper at the yarn end catching position a or the introduction position d to switch from the closed state to the open state, and sucks the lower yarn from the lower yarn catching port 22a or releases the gripped yarn end. Suction is performed from the lower thread catching port 22a. The clamp device 22b is maintained in a closed state at positions other than the yarn end capturing position a and the introducing position d, and the captured lower thread is continuously gripped.
[0027]
The suction pipe 21 is linked to and driven by the yarn joining device 20 via a drive motor 46 and a cam mechanism 45, which will be described later, and an upper standby position where the upper yarn catching port (suction port) is located below the yarn joining device 20; The yarn catching port can take an upward catching position located in the vicinity of the contact position between the winding winding body 6 and the traverse drum 13.
[0028]
When the bobbin is changed to change the yarn feeding bobbin body 5, the yarn end of the yarn feeding bobbin body 5 is blown up, and this yarn end reaches the yarn guide 23 via the unwinding assisting device 15 and reaches the yarn end catching position a. A certain relay pipe 22 is sucked and caught by the lower thread catching port 22a. At the time of yarn joining, the relay pipe 22 pivots from the standby position b to the yarn catching position a, the clamp device 22b is opened, and the yarn supply body held by the tension applying device 16 by suction from the lower yarn catching port 22a. The yarn end on the 5th side is sucked and captured.
[0029]
Further, the suction pipe 21 pivots upward from the solid line position shown in the figure to the upward yarn catching position along the arrow, and is wound by reversing the rotation of the traverse drum 13 in the direction opposite to the winding direction. The thread end of the thread body 6 is sucked and captured. When the suction pipe 21 pivots downward toward the illustrated solid line position (downward standby position) and the relay pipe 22 pivots to the introduction position d, both the lower thread and the upper thread are transferred to the yarn joining device 20. The lower yarn and the upper yarn are guided and spliced by the splicing device 20.
[0030]
The traverse drum 13 can be rotated by the drive motor 25 in the winding direction or in the opposite direction. A traverse groove is formed on the surface of the traverse drum 13, and the yarn Y wound up along the traverse groove performs a traverse operation. Instead of the traverse drum 13, a simple drive drum may be used and a separate traverse device may be provided.
[0031]
The winding winding body 6 that rotates with the traverse drum 13 is held by the cradle 12. The cradle 12 can be opened and closed in the direction of the paper thickness in FIG. 2 (arrow (L) direction in FIG. 3) by operating the arm 12a, so that the full pipe can be opened or a new winding pipe can be installed. . The cradle 12 that holds the wound winding body 6 can be lifted from the traverse drum 13 by a cradle lifter 26 by a predetermined distance. Further, a package brake 27 is provided at the tip of the cradle 12 for preventing rotation of the wound winding body 6 that has floated and becomes free.
[0032]
The wound winding body 6 released from the cradle 12 is discharged to a conveying device 29 such as a belt conveyor through a package guide 28. The conveying device 29 is provided behind the winding unit 2 along the direction in which the winding units 2 are arranged. The package guide 28 is connected to the cradle 12 so as to be able to be linked. When the cradle 12 is raised, the package guide 28 is inclined in the discharge direction. In addition, a winding tube storage device 4 is disposed above the cradle 12 of each winding unit 2, and a winding tube 7 received from the winding tube storage device 4 by a doffing device 3 described later. Mounted on the cradle 12.
[0033]
The doffing device 3 captures the lower thread of the winding unit 1, and attaches the lower thread to the winding tube 7 set between the cradle 12, and winds in conjunction with the thread picking lever 31. A lower thread is mounted on the take-up tube 7 and a yarn-feeding lever 32 for bunch winding, an opener 34 for opening and closing the arm 12 a of the cradle 12, and an empty take-up tube 7 in the take-up tube storage device 4. And a chucker 35 that carries the cradle 12 to the cradle 12.
[0034]
As shown in the overall configuration diagram of FIG. 3 and the control block diagram of FIG. 4, as the overall control configuration of the yarn winding machine 1, each winding unit 2 has a unit controller 41. A doffing controller 42 is provided, and a large number of unit controllers 41 and doffing controllers 42 are all connected to the machine controller 43 via a communication network.
[0035]
With the control configuration as described above, the doffing request signal issued from the unit controller 41 can be transmitted to the doffing controller 42 via the machine controller 43. The machine controller 43 is located at the end of the machine and controls the entire machine. Various setting values are sent from the machine controller 43 to the unit controller 41 and the doffing controller 42 via a communication network. Can be sent.
[0036]
In FIG. 4, a unit controller 41 controls each operation of the winding unit 2. The unit controller 41 includes a motor 49 for rotating the relay pipe 22, a yarn splicing device 20, and a suction pipe 21. Are connected to a drive motor 46 that rotationally drives the cam of the cam mechanism 45 and a drive motor 47 that rotationally drives the traverse drum 13. Each operation of the winding unit 2 controlled by the unit controller 41 is an operation such as a yarn splicing operation including removal of a yarn thickness defect. As the motor 49, for example, a stepping motor or a pulse motor can be used.
[0037]
The unit controller 41 is connected to the relay pipe 22 in front of the introduction position in addition to the downward standby position b before the yarn end catching position a, the yarn end catching position (lower end position) a, and the introduction position d. Temporary stopping means 48 for stopping at the doffing standby position c waiting for doffing in an upward state is provided.
[0038]
As will be described later, the unit controller 41 is connected to a clearer controller 60 having a zero point adjustment function of the thread thickness detector 19 so as to be communicable. 27 on / off control is performed. The unit controllers 41 are provided so as to correspond to the respective winding units 2, but one unit controller 41 can be associated with a plurality of winding units 2.
[0039]
The doffing controller 42 of the doffing device 3 includes a driving motor 52 that rotationally drives a cam of a cam mechanism 51 that operates the yarn picking lever 31, the yarn shifting lever 32, the opener 34, and the chucker 35 in a predetermined order, and a doffing device. 3 is connected to a drive motor 54 that rotationally drives a wheel 53 that travels 3 along a number of winding units 2.
[0040]
When the winding yarn body 6 of the winding unit 2 becomes full, the winding unit 2 performs a predetermined operation to be described later and sets a relay pipe (lower yarn catching guide means) 22 for catching the lower yarn as a ball. After moving to the lifting standby position c, a doffing request signal is transmitted to the doffing device 3. The doffing request signal includes the unit number of the winding unit 2, and the doffing controller 42 identifies the winding unit 2 that issued the signal based on the number. Further, the winding unit 2 turns on a doffing request lamp (not shown) which is a doffing request display means as understood by the operator. As shown in FIG. 3, the doffing request signal is sent from the unit controller 41 to the doffing controller 42 via the machine controller 43, and the doffing device 3 is directed to the winding unit 2 that issues the doffing request signal. And stops just above the winding unit 2. As shown in FIG. 4, the doffing device 3 and the winding unit 2 communicate with each other through communication means 56a and 56b, and the doffing device 3 and the winding unit 2 are required for the doffing together. Perform the correct operation. The communication means 56a and 56b perform transmission and reception by non-contact communication, and for example, those that perform infrared light projection and reception are used.
[0041]
Here, the zero point adjustment function for the detection value of the thread thickness detector 19 will be described. In FIG. 1, the unit controller 41 of the winding unit 2 is capable of infrared communication with the doffing device 3 via the communication means 56a and 56b as described above, and the clearer in the winding unit 2 is clear. Communication with the controller 60 is also possible.
[0042]
This clearer controller 60 detects a thread thickness defect such as a slab based on a zero point adjusting means 61 for adjusting a zero point with respect to a detected value of the thread thickness detector 19 and a detected value of the thread thickness detector 19. A yarn thickness defect detection means 62 is provided. The yarn thickness detection signal from the yarn thickness detector 19 is received, and the yarn cutting signal is connected to the yarn cutting device 19a.
[0043]
That is, the clearer controller 60 receives the yarn thickness detection signal that is always detected by the yarn thickness detector 19 during winding of the yarn, and the yarn thickness defect detection means 62 based on the received yarn thickness detection signal. It is determined whether the yarn thickness is within a predetermined range (a state where there is no yarn thickness defect). If the yarn thickness exceeds this range, a yarn cutting signal is transmitted to the yarn cutting device 19a. When the yarn Y is cut by the yarn cutting device 19a based on the yarn cutting signal, as described above, the yarn splicing operation using the suction mouth 21 and the relay pipe 22 is performed, and the yarn splicing operation is performed during the yarn splicing operation. The defective part of is removed by suction.
[0044]
Then, in the zero point adjusting means 61 provided in the clearer controller 60, when a zero point correction signal is received from the unit controller 41 in a state where there is no thread in the detection area of the thread thickness detector 19, as will be described later. The zero point adjustment (zero point correction) is performed by adjusting the circuit constant on the substrate and adjusting the output signal to zero.
[0045]
The fact that there is no yarn in the yarn thickness detector 19 is recognized by the unit controller 41 by transmission of a yarn presence / absence signal from the clearer controller 60. When the yarn is cut by the yarn cutting device 19a to remove the yarn thickness defect as described above, or when the yarn is cut with the winding winding body 6 being full as described later, There is no thread in the thread thickness detector 19. At this time, the yarn thickness defect detection means 62 detects the absence of yarn based on the yarn thickness detection signal received from the yarn thickness detector 19. Then, a yarn presence / absence signal (yarn absence signal) for notifying that there is no yarn is transmitted to the unit controller 41. By receiving this signal, the unit controller 41 recognizes that the yarn thickness detector 19 is in a thread-free state, and after removing the yarn thickness defect, a splice that connects the upper yarn and the lower yarn with the yarn joining device 20. A zero point correction signal is transmitted to the clearer controller 60 at a specific timing during the cycle or doffing operation. When receiving the zero point correction signal, the clearer controller 60 performs zero point adjustment on the detection value of the thread thickness detector 19 by the zero point adjusting means 61.
[0046]
With respect to the transmission timing of the zero point correction signal during the splice cycle from the unit controller 41 to the clearer controller 60, the suction pipe 21 or the relay pipe 22 is received after the unit controller 41 receives the yarnless signal after the yarn thickness defect cut. Is set at an arbitrary timing until one of the turning operation commands is output. Further, the transmission timing of the zero point correction signal during the doffing operation is set at the timing when a predetermined signal is received from the doffing device 3. The transmission timing of the zero point correction signal during the doffing operation will be described in detail in the description of the doffing operation described below.
[0047]
Hereinafter, the operation procedure at the time of doffing by the yarn winder 1 having the above-described configuration will be described with reference to FIGS. 5 and 6 and the transmission timing of the zero point correction signal during the doffing operation will be described. 5 shows a procedure performed until the winding unit 2 issues a doffing request signal, and FIG. 6 shows a procedure performed jointly by the winding unit 2 and the doffing device 3.
[0048]
First, as shown in FIG. 5 (a), when the yarn length measured from the accumulated value of the pulses corresponding to the rotational speed of the traverse drum 13 reaches a predetermined length, the wound winding yarn body 6 is full. Yes, the yarn cutting device (cutter) 19a is operated to cut the yarn. Then, the upper thread y1 is wound on the winding body 6 and the lower thread y2 is held in the tension applying device 16 for a moment. Therefore, the yarn path of the lower thread y2 between the tension applying device 16 and the unwinding assisting device 15 is maintained. Further, the unit controller 41 suddenly decelerates the traverse drum 13 as the yarn is cut.
[0049]
At substantially the same time as the deceleration of the traverse drum 13 is started, the cradle lifter 26 and the package brake 27 are actuated as shown in FIG. The rotation of the winding thread body 6 is stopped. Thereafter, the cradle lifter 26 is released, and the wound winding thread body 6 returns to the state in contact with the traverse drum 13. Also, at substantially the same time as the operation of the cradle lifter 26, the relay pipe 22 (lower thread catching guide means) pivots from the downward standby position b to the thread catching position a. A clamping device 22b provided in the lower thread catching port 22a of the relay pipe 22 opens by hitting a thread guide 23 as a stopper, and the lower thread y2 is passed from the lower thread catching port 22a between the tension applying device 16 and the yarn supply winding body 5. Captured by suction.
[0050]
Next, as shown in FIG. 5C, the relay pipe 22 captures the lower thread y <b> 2, and the lower thread capturing port 22 a is on the winding and winding yarn body 6 side (upward) from the yarn joining device 20. It turns upward and turns to the doffing standby position c. At this time, since the relay pipe 22 is temporarily stopped at the doffing standby position c before the introduction position d to the yarn joining device 20, the clamp device 22b still holds the lower thread y2. In this state, a doffing request signal is output from the unit controller 41 of the winding unit 2 to the doffing controller 42 of the doffing device 3 via the machine controller 43.
[0051]
In this state, that is, even when the relay pipe 22 is in the doffing standby position c, the tip of the lower thread y2 gripped by the clamping device 22b is below the thread thickness detector 19, and further, Since the yarn y1 is also wound on the winding body 6, the yarn thickness detector 19 has no yarn. Note that a yarn presence / absence signal indicating whether the yarn thickness detector 19 is in a yarn presence state or a yarn absence state is constantly transmitted from the clearer controller 60 to the unit controller 41 (see FIG. 1).
[0052]
When the doffing request signal is output from the machine controller 43 to the doffing controller 42 as described above, the doffing device 3 that has received the doffing request signal as shown in FIG. Travels directly above the winding unit 2 and stops. When the doffing device 3 stops just above the winding unit 2, a pulse signal that notifies the unit controller 41 of arrival from the doffing controller 42 via the communication means 56a and 56b by infrared communication. Is sent. Thereby, in the unit controller 41, the timing at which the doffing operation is started is recognized.
[0053]
The unit controller 41 receives this pulse signal as a predetermined signal indicating a specific timing during the doffing operation, and transmits a zero point correction signal to the clearer controller 60 based on this signal. Based on this zero point correction signal, as described above, zero point adjustment is performed by the zero point adjusting means 61 of the clearer controller 60 in a state where there is no yarn in the yarn thickness detector 19. Thus, since the unit controller can transmit the zero point correction signal to the clearer controller at a specific timing during the doffing operation, the doffing device 3 reaches just above the winding unit 2. Regardless of the time, the zero point adjustment can be performed at the same timing every time from the start of the doffing operation to the resumption of winding. Therefore, the time from the zero point adjustment to the resumption of winding can be made constant every time without variation, and the occurrence of the zero point deviation can be effectively suppressed.
[0054]
Hereinafter, the doffing operation will be further described. When the doffing device 3 arrives just above the winding unit 2, the yarn picking lever 31 is swung to the winding unit 2 side while extending downward, and the cutter / holding portion 31 a at the tip is captured by the relay pipe 22. The lower thread y2 is inserted and the lower thread y2 is cut and held at the same time, whereby the lower thread is captured again from the relay pipe 22 to the thread pick-up lever 31. During this time, the inside of the yarn thickness detector 19 remains in a state where there is no yarn, so that the zero point adjustment can be performed. In addition, since the winding unit 2 issues the doffing request signal after the relay pipe 22 reaches the doffing standby position c above the yarn joining device 20 with the lower thread y2, the doffing device 3 is called. Even if the lifting device 3 is near and may reach immediately, the turning operation of the relay pipe 22 and the yarn picking lever 31 do not interfere with each other.
[0055]
As shown in FIG. 6B, the timing at which the yarn pick-up lever 31 of the doffing device 3 has picked up the lower yarn is substantially the same as the yarn pick-up lever 31 via the communication means 56a and 56b. 42, the relay pipe 22 of the winding unit 2 pivots to the introduction position d under the control of the unit controller 41, and the clamp device 22b opens to suck the remaining yarn end after cutting. In parallel with the operation of the thread pick-up lever 31, the opener 34 lifts the arm 12a of the cradle 12 while opening it. The package guide 28 is also linked and inclined, and the wound winding body 6 detached from the cradle 12 is reliably discharged onto the belt conveyor 29 through the package guide 28.
[0056]
The transmission timing of the zero point correction signal during the doffing operation may not be based on the arrival timing of the doffing device described above, or may be based on other timing. That is, the unit controller 41 transmits a pulse signal transmitted by the doffing controller 42 via the communication means 56a and 56b to indicate the timing at which the yarn picking lever 31 has captured the lower thread, and the unit controller 41 is a predetermined signal indicating a specific timing during the doffing operation And a zero point correction signal may be transmitted to the clearer controller 60 based on this. In this case, the zero point adjustment is performed during the turning movement of the relay pipe 22 or the operation of the opener 34, that is, when there is no thread in the thread thickness detector 19.
[0057]
When the wound winding body 6 is discharged onto the belt conveyor 29, as shown in FIG. 6C, the cradle 12 is lowered toward the traverse drum 13 while being opened, and the winding tube 7 can be mounted. Position. Note that the cradle 12 may be lowered so as to be reopened at the lower end after closing once during the lowering. The chucker 35 grips the take-up tube 7 received from the take-up tube supply device, and the take-up tube 7 is carried onto the traverse drum 13 and set between the bobbin holders of the cradle 12. Next, the thread pick-up lever 31 is lifted, and the lower thread y2 is hung on the thread-shifting lever 32 in the ascending process, and the lower thread y2 is opened between the cutter 31a and the thread-shifting lever 32 of the thread pick-up lever 31. And between the winding tube 7 and the winding tube 7. Next, when the opener 34 closes the cradle 12, the lower thread y <b> 2 is sandwiched and attached to the end of the winding tube 7. Next, the package brake 27 is actuated for a moment to correct the deviation between the winding tube 7 and the bobbin holder. These series of operations are performed in a state where the winding tube 7 is in contact with the traverse drum 13.
[0058]
When the threading (yarning) to the winding tube 7 is finished, the doffing device 3 sends a signal to the winding unit 2 via the communication means 56a and 56b as shown in FIG. The drum 13 is rotated at a low speed, a bunch winding is formed at the end of the winding tube 7, and then the traverse drum 13 is rotated at a high speed to resume the winding of the yarn supply body 5. Note that the relay pipe 22 has completed the return to the standby position b in the downward state after revolving to the introduction position d in FIG. 6B and before resuming the winding in FIG. 6D. .
[0059]
Next, the initial yarn attaching operation using the doffing device 3 will be described below. This initial yarn attaching operation is an operation performed by supplying the first yarn supply winding body 5 to the winding position without the winding winding body 6 in the cradle 12, and the winding tube 7 is connected to the cradle 12. This is an operation of attaching (yarning) the yarn end of the yarn supply wound body 5 to the take-up tube 7 while being attached to the take-up tube support means.
[0060]
First, the yarn supply body 5 is supplied to the winding position of the winding unit 2. At this time, the yarn end of the yarn supply winding body 5 is in a state of hanging down in the core tube. The relay pipe 22 pivots slightly from the downward standby position a to the yarn catching position b, the clamp device 22b hits against the stopper and opens, and the lower thread catching port 22a is opened. In this state, the yarn end of the yarn supply winding body 5 is blown upward, and the yarn end is captured by the relay pipe 22. Thereafter, the relay pipe 22 turns to the doffing standby position c and stops temporarily. In this state, a doffing request signal is output from the unit controller 41 of the winding unit 2 to the doffing controller 43 of the doffing device 3 via the machine controller 43.
[0061]
The doffing device 3 that has received the doffing request signal stops just above the winding unit 2 and performs the doffing operation similar to the case where the winding winding body 6 is exchanged as described above. This arrival timing is transmitted as a pulse signal from the doffing controller 42 to the unit controller 41 via the communication means 56a and 56b. Upon receiving this pulse signal, the unit controller 41 transmits a zero point correction signal to the clearer controller 60. The transmission timing of the zero point correction signal can be appropriately changed during a period in which there is no yarn in the yarn thickness detector 19, as in the above-described replacement operation of the wound winding yarn body 6.
[0062]
The above is the description of the yarn winding machine 1 according to this embodiment. According to the present embodiment, the unit controller 41 that controls each operation of the winding unit 2 has a function of transmitting a zero point correction signal to the clearer controller 60, and is transmitted during the operation of the doffing device 3. Therefore, the zero point adjustment by the clearer controller 60 can be performed during the doffing operation. Accordingly, there is no deviation of the zero point in the yarn thickness detection value immediately after the start of the yarn winding after the doffing operation is completed, and it is possible to reliably prevent wasteful yarn cutting. Further, it is possible to prevent the upper yarn wound around the take-up tube from being lost due to the suction and capture of the upper yarn by the yarn splicing operation by useless yarn cutting, and it is possible to suppress a decrease in work efficiency.
[0063]
Further, the embodiment is not limited to the above, and may be implemented as follows, for example.
[0064]
(1) The transmission timing of the zero point correction signal during the doffing operation is not necessarily matched with the operation timing of a predetermined device such as the arrival timing of the doffing device 3 or the lower yarn catching timing of the yarn picking lever 31. It may be set at any timing as long as the doffing operation is being performed. For example, a timing that is arbitrarily specified as long as the doffing operation is in progress and there is no yarn in the yarn thickness detector 19, such as one set by a timer after a predetermined time has elapsed from the operation timing of a predetermined device. It may be.
[0065]
(2) In the present embodiment, the doffing device is disposed so as to be able to travel along the direction in which the plurality of winding units are arranged in parallel, but a doffing device is provided for each winding unit. Even if it is a thing, this invention can be applied. In this case, the doffing device is incorporated in each winding unit, and the unit controller of the winding unit and the doffing controller of the doffing device are connected via a communication cable so that they can communicate directly. Accordingly, the unit controller can transmit the doffing request signal to the doffing controller and transmit the zero point correction signal to the clearer controller instead of the arrival timing of the doffing device.
[0066]
(3) In this embodiment, the yarn winding machine provided with the doffing device is described. However, the yarn winding machine does not include the doffing device and performs the doffing operation manually. The present invention is also applicable. In this case, the winding unit is provided with operation means (operation buttons) operated by an operator in order to cause the winding unit to perform the doffing preparation operation, and the unit controller is related to the operation of the operation means, While controlling so that a winding unit may be in a doffing preparation state, it can be set as the structure which outputs a zero point correction signal with respect to a clearer controller. According to this, since the zero point correction signal is transmitted along with the operation of the operation means, the zero point adjustment by the clearer controller is performed when the doffing operation is completed. Accordingly, there is no deviation of the zero point in the yarn thickness detection value immediately after the start of the yarn winding after the doffing operation is completed, and it is possible to reliably prevent wasteful yarn cutting. The operating means is preferably provided for each winding unit. Further, the winding unit includes lower thread catching guide means (relay pipe 22) for catching the yarn end of the yarn supply winding body and guiding the captured yarn end in a direction approaching the winding winding body, and preparing for doffing. The state is a state where the lower thread catching guide means is moved (turned) to the doffing preparation position. More specifically, the doffing preparation state is a state in which the relay pipe 22 is lifted toward the take-up wound yarn body 6 until the lower yarn catching port 22a exceeds the yarn joining device 20.
[0067]
【The invention's effect】
As described above, according to the invention of claim 1, the unit controller that controls each operation of the winding unit has a function of transmitting a zero point correction signal to the clearer controller, and the ball of the doffing device Since transmission is performed during the lifting operation, the zero point adjustment by the clearer controller is performed when the doffing operation is completed. Accordingly, there is no deviation of the zero point in the yarn thickness detection value immediately after the start of the yarn winding after the doffing operation is completed, and it is possible to reliably prevent wasteful yarn cutting. Further, it is possible to prevent the upper yarn wound around the take-up tube from being lost due to the suction and capture of the upper yarn by the yarn splicing operation by useless yarn cutting, and it is possible to suppress a decrease in work efficiency.
[0068]
According to the invention of claim 2, the doffing device and the unit controller are provided with communication means, and the unit controller can grasp a specific timing during the doffing operation by the doffing device, and this specific At the timing, the unit controller can send a zero point correction signal to the clearer controller. That is, the zero point adjustment can be performed at the same timing every time until the doffing operation is started and the winding is resumed. As a result, the time from the zero point adjustment to the resumption of winding can be made constant each time without variation, and the occurrence of a zero point shift can be effectively suppressed.
[0069]
According to the invention of claim 3, in the yarn winder provided with the doffing device that is disposed so as to be able to run along the direction in which the plurality of winding units are arranged, the unit controller The specific timing during the lifting operation can be grasped, and the same effect as in claim 2 can be obtained.
[0070]
According to invention of Claim 4, the unit controller which controls each operation | movement of a winding unit is equipped with the function which transmits a zero point correction signal with respect to a clearer controller, Furthermore, a winding unit is made into a doffing preparation state. An operating means for controlling as much as possible is connected, and a zero point correction signal is transmitted in accordance with the operation of this operating means, so there is no automatic doffing device, and the operator manually replaces the winding tube. Even when the work and the yarn attaching operation to the new winding tube are performed, the zero point adjustment by the clearer controller is performed when the doffing operation is completed. Accordingly, there is no deviation of the zero point in the yarn thickness detection value immediately after the start of the yarn winding after the doffing operation is completed, and it is possible to reliably prevent wasteful yarn cutting. Further, it is possible to prevent the upper yarn wound around the take-up tube from being lost due to the suction and capture of the upper yarn by the yarn splicing operation by useless yarn cutting, and it is possible to suppress a decrease in work efficiency.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a zero point adjustment function of a yarn thickness detector in a yarn winding machine according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a device configuration of a winding unit in the yarn winding machine according to the embodiment.
FIG. 3 is a front view showing a device configuration of the entire yarn winding machine according to the embodiment.
FIG. 4 is a block diagram illustrating a control configuration of the yarn winding machine according to the present embodiment.
FIG. 5 is a diagram showing an operation procedure at the time of doffing in the yarn winding machine according to the embodiment.
FIG. 6 is a diagram showing an operation procedure at the time of doffing in the yarn winding machine according to the embodiment.
[Explanation of symbols]
1 Yarn winding machine
2 Winding unit
3 doffing equipment
5 Yarn supply body
6 Winding winding body
7 Winding pipe
19 Thread thickness detector
41 Unit controller
42 Tamaki Controller
43 Machine controller
60 Clearer Controller
61 Zero point adjustment means
62 Thread thickness defect detection means

Claims (4)

A plurality of winding units that pull up the yarn of the yarn supply winding body and wind it around the winding tube to form a winding winding body, and remove the winding winding body and set a new winding tube to set the yarn end. A yarn winder equipped with a doffing device to which
A unit controller for controlling each operation of the winding unit; a yarn thickness detector disposed on a yarn path between the yarn supply winding body and the winding winding body; and the yarn thickness detector. Clearer controller with zero point adjustment function
The yarn winding machine provided with a yarn thickness detector, wherein the unit controller transmits a zero point correction signal to the clearer controller during a doffing operation of the doffing device. The doffing device transmits a predetermined signal to the unit controller at a specific timing during the doffing operation via communication means provided in the doffing device and the unit controller, and the unit controller The yarn winder equipped with a yarn thickness detector according to claim 1, wherein the zero point correction signal is transmitted to the clearer controller based on a signal received from the doffing device. 3. The doffing device is disposed so as to be able to run along a parallel arrangement direction of the plurality of winding units, and the communication means performs transmission / reception by non-contact communication. A yarn winder provided with the described yarn thickness detector. A plurality of winding units that pull up the yarn of the yarn supply winding body and wind it around a winding tube to form a winding winding body; a unit controller that controls each operation of the winding unit; and the yarn supply winding body. A yarn winding machine including a yarn thickness detector disposed on a yarn path between the winding yarn body and a clearer controller having a zero point adjustment function of the yarn thickness detector. ,
Having operation means connected to the unit controller;
The unit controller controls the winding unit to be in a doffing preparation state in relation to the operation of the operation means, and outputs a zero point correction signal to the clearer controller. A yarn winder equipped with a thickness detector.

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