CN105905680A

CN105905680A - Yarn coiling apparatus and fiber machinery

Info

Publication number: CN105905680A
Application number: CN201610009008.3A
Authority: CN
Inventors: 泽田映; 高田宽; 村山贤; 村山贤一
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2015-02-24
Filing date: 2016-01-07
Publication date: 2016-08-31
Anticipated expiration: 2036-01-07
Also published as: CN105905680B; ITUB20160889A1; JP2016155639A; DE102016000922A1

Abstract

The present invention provides a yarn coiling apparatus and a fiber machinery. The coiling unit (1) comprises: a bobbin support part (2) configured to supply yarn; a coiling device configured to coil the yarn of the bobbin support part (2) to form a coil package (P); a joining device (10) configured to take the processing of the coiling apparatus (13) to coil the yarn (Y) as a coiling processing institution; and a driving motor (23) configured to drive the joining device (10). The coiling unit (1) has a motor current regulation part (42) and a drive motor (23) configured to drive the joining device (10). The coiling unit (1) has a motor current regulation part (42) configured to set the current given to the drive motor (23) to be a first value when the state of the coiling unit (1) is a first state and set the current given to the drive motor (23) to be a second value larger than the first value when the state of the coiling unit (1) is the second state different from the first state.

Description

Yarn winding device and textile machine

Technical Field

The present invention relates to a yarn winding device and a textile machine.

Background

As a conventional yarn winding device, there is known a yarn winding device including: a yarn supplying section capable of supplying a yarn; a winding section for winding the yarn of the yarn supplying section to form a package; a winding processing mechanism for performing a process for winding the yarn around the winding unit; and a drive motor that drives the winding processing mechanism (see, for example, japanese patent laid-open No. 2009-208880).

In the yarn winding device described in japanese patent application laid-open No. 2009-208880, vibration of the cradle is monitored by a strain gauge, and the rotation speed of the package is controlled according to the intensity of the vibration.

In the above-described conventional technique, the winding processing mechanism may be accidentally changed due to a change in the state of the yarn winding device. For example, in a state where vibration generated in the winding processing mechanism is large (when winding of yarn is started or an abnormal paper bobbin appears), the vibration generated by the vibration is larger than a force for holding or operating the winding processing mechanism by the drive motor, and a positional deviation may occur in the winding processing mechanism. In the above-described conventional art, in order to cope with such a situation, it is necessary to increase the current supplied to the drive motor so as to increase the drive force (drive torque) of the drive motor.

Disclosure of Invention

Therefore, an object of the present invention is to provide a yarn winding device and a textile machine that can suppress a current supplied to a drive motor while preventing an unexpected variation in a winding processing mechanism.

The yarn winding device of the invention comprises: a yarn feeding section capable of feeding a yarn; a winding section that winds the yarn of the yarn supplying section to form a package; a winding processing mechanism for performing processing for winding the yarn around the winding section; and a drive motor that drives the winding processing mechanism, wherein the yarn winding device includes a motor current adjustment unit that sets a current supplied to the drive motor to a 1 st value when the state of the yarn winding device is a 1 st state, and sets a current supplied to the drive motor to a 2 nd value larger than the 1 st value when the state of the yarn winding device is a 2 nd state different from the 1 st state.

In the yarn winding device, the current supplied to the drive motor when the state of the yarn winding device is the 1 st state is set to the 1 st value, and the current supplied to the drive motor when the state is the 2 nd state is set to the 2 nd value larger than the 1 st value. Thus, for example, the 1 st value of current is supplied to the drive motor at a normal time, and the 2 nd value of current is supplied to the drive motor when the winding of the yarn is started due to an unexpected fluctuation of the winding processing means, and the fluctuation can be suppressed. Therefore, it is possible to suppress the current supplied to the drive motor while preventing the winding processing mechanism from being accidentally changed.

In this yarn winding device, the 2 nd state is a state in which the vibration of the winding processing means is larger than that in the 1 st state, or a state in which the vibration of the winding processing means is estimated to be larger than that in the 1 st state. This prevents the winding processing mechanism from being accidentally changed, and suppresses the current supplied to the drive motor.

In the yarn winding device of the present invention, the winding processing means may include: a yarn processing section for applying a yarn; and a spring member for biasing the yarn processing section in a predetermined direction, wherein the drive motor moves the yarn processing section or holds the yarn processing section at a predetermined position by a driving force against a biasing force of the spring member, and the motor current adjusting section switches a 1 st value and a 2 nd value to be supplied to the drive motor based on the biasing force of the spring member and a magnitude of vibration of the winding processing mechanism. According to this configuration, the winding processing mechanism can be driven with less rattling, and the occurrence of positional deviation of the winding processing mechanism can be suppressed even if the vibration is large.

The yarn winding device of the present invention may be configured to include a vibration detecting unit for detecting vibration of the winding mechanism, and the motor current adjusting unit may switch the 1 st value and the 2 nd value to be supplied to the drive motor based on a detection result of the vibration detecting unit. With this configuration, the current supplied to the drive motor can be adjusted by detecting the actual vibration.

The yarn winding device of the present invention may be configured to include a package state acquisition section that measures or calculates at least one of a winding length of the yarn wound in the package, a diameter of the package, and a weight of the package, and the motor current adjustment section may switch the 1 st value and the 2 nd value to be supplied to the drive motor based on a measurement result or a calculation result of the package state acquisition section. In this case, it is found that if at least one of the winding length, the diameter of the package, and the weight of the package is large, the winding processing means may be unexpectedly changed, and therefore the 1 st and 2 nd values can be switched according to the parameter. Thus, the present invention can be realized by the package state obtaining section provided in a normal yarn winding device, and a special sensor is not additionally provided.

The yarn winding device of the present invention may be configured to include a winding speed measuring unit that detects a winding speed of the yarn wound in the package, and the motor current adjusting unit may switch the 1 st value and the 2 nd value to be supplied to the drive motor based on a measurement result of the winding speed measuring unit. In this case, it is found that the winding processing means may be accidentally changed if the winding speed is high, and therefore the 1 st value and the 2 nd value are switched according to the winding speed. Thus, the present invention can be realized by using the winding speed detecting section provided in a general yarn winding device, and a special sensor which is additionally provided is not required.

The yarn winding device of the present invention may be configured to include a winding speed setting unit that sets a winding speed of the yarn wound in the package, and the motor current adjusting unit may switch the 1 st value and the 2 nd value to be supplied to the driving motor in accordance with a set value of the winding speed setting unit. In this case, it is found that the winding processing means may be accidentally changed if the set value of the winding speed is large, and therefore the 1 st value and the 2 nd value are switched according to the set value of the winding speed. Thus, the present invention can be realized by the winding speed setting unit provided in a normal yarn winding device, and a special sensor which is additionally provided is not required.

In the yarn winding device according to the present invention, the winding processing mechanism may be a yarn splicing device for splicing a cut yarn, the yarn splicing device may include a link mechanism for transmitting a driving force of a drive motor to a yarn processing section acting on the yarn, the link mechanism may include a cam, a cam follower driven by the cam, and a spring member for urging the yarn processing section in a predetermined direction, and the cam follower may be urged toward the cam by the spring member of the link mechanism. In this case, in the joint device, power transmission with less rattling can be achieved by the cam and the cam follower. In addition, the cam can be prevented from performing an unexpected operation due to the state of the yarn winding device.

In the yarn winding device of the present invention, the winding section may include an auxiliary roller for assisting in supporting the package, and the winding processing mechanism may include: a cradle rotatably supported by the frame; and a contact pressure adjusting mechanism for adjusting the contact pressure between the assist roller and the package by using the drive motor. In this case, the contact state of the package and the auxiliary roller can be kept constant regardless of the state of the yarn winding device. As a result, constant winding quality can be ensured.

In the yarn winding device of the present invention, the drive motor may be a stepping motor. By using the stepping motor as the drive motor, accurate positioning control of the winding processing mechanism can be realized with a simple circuit configuration, for example.

The textile machine of the present invention comprises: a plurality of yarn winding devices, each of the plurality of yarn winding devices including: a yarn feeding section capable of feeding a yarn; and a winding section that winds the yarn supplied from the yarn supplying section to form a package; a traveling carriage capable of traveling in a direction in which the plurality of yarn winding devices are arranged; a winding processing mechanism which is arranged on the traveling trolley and comprises a yarn splicing device for splicing the broken yarn in the yarn winding device with a yarn splicing request in the yarn winding devices; a yarn processing unit that is provided in the yarn splicing device and acts on the yarn; and a drive motor that is provided in the traveling carriage and drives the yarn processing unit, wherein the textile machine includes a motor current adjustment unit that sets a current to be supplied to the drive motor to a 1 st value when a state of the traveling carriage is a 1 st state, and sets a current to be supplied to the drive motor to a 2 nd value that is larger than the 1 st value when the state of the traveling carriage is a 2 nd state different from the 1 st state.

In the textile machine, the current supplied to the driving motor when the state of the traveling trolley is the 1 st state is set to the 1 st value, and the current supplied to the driving motor when the state is the 2 nd state is set to the 2 nd value larger than the 1 st value. Thus, a large current is not always supplied to the drive motor, and for example, a 1 st value current is supplied to the drive motor in a normal state. On the other hand, when the traveling carriage, which is provided in the yarn processing unit of the yarn splicing device of the winding processing mechanism and unexpectedly fluctuates, travels, or the like, a large current of the 2 nd value is supplied to the drive motor, and the fluctuation can be suppressed. Therefore, it is possible to suppress the current supplied to the drive motor while preventing the winding processing mechanism from being accidentally changed. The 2 nd state is a state in which the vibration of the traveling carriage is larger than that in the 1 st state, or a state in which the vibration of the traveling carriage is estimated to be larger than that in the 1 st state. The motor current adjusting part switches the 1 st value and the 2 nd value according to the detection result of the vibration detecting part for detecting the vibration of the traveling trolley. Or the motor current adjusting unit switches the 1 st value and the 2 nd value according to at least one of the speed and the acceleration of the traveling carriage.

According to the present invention, it is possible to provide a yarn winding device and a textile machine that can suppress the current supplied to the drive motor while preventing an unexpected variation in the winding processing mechanism.

Drawings

Fig. 1 is a front view showing a winding unit of embodiment 1.

Fig. 2 is a perspective view showing a joint device in the winding unit of fig. 1.

Fig. 3 is a schematic plan view for explaining the operation of the joint device of fig. 2.

Fig. 4 is a schematic plan view showing a variation from fig. 3 for explaining the operation of the joint device of fig. 2.

Fig. 5 is a schematic plan view showing a variation from fig. 4 for explaining the operation of the joint device of fig. 2.

Fig. 6 is a diagram showing a contact pressure adjusting mechanism of the winding unit of embodiment 2.

Fig. 7 is a front view showing the spinning machine of embodiment 3.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and redundant description thereof is omitted.

[ embodiment 1 ]

As shown in fig. 1, a winding unit (yarn winding device) 1 of the present embodiment winds a yarn Y from a yarn supplying bobbin B to a package P. The yarn supplying bobbin B is formed in a spinning machine in a preceding step, and is transported from the spinning machine in a state of being mounted on a tray, for example. Further, the automatic winder as a textile machine is configured by arranging a plurality of winding units 1 side by side.

In the winding unit 1, a bobbin supporting portion (yarn supplying portion) 2, a yarn unwinding assisting device 3, a pre-clearer 4, a tension applying device 5, a tension sensor 6, a lower yarn catching device 7, a piecing device 10, a cutter 9, a yarn monitoring device 11, an upper yarn catching device 12, and a winding device (winding portion) 13 are provided in this order from an upstream side (here, a lower side) along a traveling path of the yarn Y. These respective structures are attached to the unit main body portion 8.

The bobbin support portion 2 supports the yarn supplying bobbin B in an upright state and can supply the yarn Y. The yarn unwinding assisting device 3 controls the balloon of the yarn Y unwound from the yarn supplying bobbin B by a cylindrical member disposed above the yarn supplying bobbin B. The tension applying device 5 is a shed type tensioner for applying a predetermined tension to the running yarn Y by holding the yarn Y in a zigzag shape by a pair of sheds including a comb-tooth-shaped fixed shed and a movable shed. The tension sensor 6 measures the tension of the yarn Y applied by the tension applying device 5.

The pre-clearer 4 restricts the passage of a yarn defect such as a yarn winding larger than a predetermined value in advance by a pair of restricting members arranged at a predetermined interval across the traveling path of the yarn Y. The yarn monitoring device 11 detects a yarn defect such as a slub yarn during winding of the yarn Y. The cutter 9 cuts the yarn Y when the yarn monitor 11 detects a yarn defect. The splicing device 10 is a splicing device that splices the cut yarn Y. The yarn splicing device 10 splices the yarn end of the yarn Y on the package P side and the yarn end of the yarn Y on the yarn supplying bobbin B side when the cutter 9 cuts the yarn Y or cuts the yarn Y.

The lower yarn catching device 7 is attached to the unit main body portion 8 so as to be rotatable about the axis α. A suction port 7a is provided at the rotating end of the lower yarn catching device 7. The suction port 7a rotates between the upper portion of the piecing device 10 and the lower portion of the pre-clearer 4. The lower yarn catching device 7 rotates the suction port 7a to the lower side of the pre-clearer 4 to suck the yarn end of the yarn Y on the yarn supplying bobbin B side by the suction port 7a when the cutter 9 cuts the yarn Y or the yarn Y is cut, and then rotates the suction port 7a to the upper side of the yarn splicing device 10 to transfer the yarn Y on the yarn supplying bobbin B side to the yarn splicing device 10.

The upper yarn catching device 12 is attached to the unit main body portion 8 so as to be rotatable about the axis β. A suction port 12a is provided at the rotating end of the upper yarn catching device 12. The suction port 12a rotates between the lower portion of the joint device 10 and the winding device 13. The upper yarn catching device 12 rotates the suction port 12a toward the winding device 13 to suck the yarn end of the yarn Y on the package P side by the suction port 12a when the cutter 9 cuts the yarn Y or the yarn Y is cut, and then rotates the suction port 12a toward the lower side of the yarn splicing device 10 to deliver the yarn Y on the package P side to the yarn splicing device 10.

The winding device 13 winds the yarn Y unwound from the yarn supplying bobbin B around the package P to form a full package P. The winding device 13 has a winding drum (auxiliary roller) 14 forming a drum groove 14 a. The take-up roller 14 assists in supporting the package P. The winding device 13 is provided with a cradle 15 that rotatably supports the package P. The cradle 15 constitutes a winding processing mechanism for performing a process for winding the yarn Y around the winding device 13. The cradle 15 brings the surface of the package P into contact with the surface of the take-up roller 14 with an appropriate contact pressure. The winding device 13 is configured to rotate the winding drum 14 by a motor to rotate the package P, and to wind the yarn Y around the package P while traversing the yarn Y by a predetermined width.

The unit main body 8 is provided with a control unit 16, an input unit 17, and a display unit 18. The controller 16 controls each configuration of the winding unit 1. The input unit 17 is, for example, an operation button, and is used when an operator sets various values or the like to the control unit 16. The display unit 18 displays the operating state of the winding unit 1. The control unit 16 transmits and receives various kinds of information related to the winding operation to and from a higher-level control unit provided in the automatic winder. The upper control unit controls the control unit 16 of each winding unit 1 collectively, and controls the entire automatic winder.

Next, the structure of the joint device 10 will be explained. In the following description, for convenience, the package P side is referred to as an upper side (upper side), the yarn supplying bobbin B side is referred to as a lower side (lower side), a traveling path side of the yarn Y with respect to the yarn splicing device 10 is referred to as a front side (front side), and the opposite side is referred to as a rear side (rear side). The yarn Y on the package P side is referred to as an upper yarn, and the yarn Y on the yarn supplying bobbin B side is referred to as a lower yarn.

As shown in fig. 2, the yarn splicing device 10 constitutes a winding processing means for performing a process for winding the yarn Y by the winding device 13. The yarn splicing device 10 includes a splicing section 50, a pair of feed screw rods (yarn processing sections) 81, and a pair of twist stop rods (yarn processing sections) 82. The feed screw 81 is a lever member that adjusts the introduction position of the yarn end of the yarn Y in the yarn splicing section 50. The pair of feed screw rods 81 are arranged vertically in parallel and rotate in conjunction with each other. The twist stopper lever 82 is a lever member that regulates the yarn Y at a constant position when the yarn Y is pieced by the piecing portion 50. The pair of twist stop levers 82 are disposed vertically in parallel between the pair of feed levers 81 and rotate in conjunction with each other. The joint device 10 is attached to the unit main body 8 via a housing 20 (see fig. 1) that supports the respective structures.

The 1 st guide plate 21 is disposed above the joint 50. The 2 nd guide plate 22 is disposed below the joint 50. The 1 st guide plate 21 and the 2 nd guide plate 22 face each other with the joint 50 therebetween in the vertical direction. The 1 st guide plate 21 and the 2 nd guide plate 22 are formed with guide grooves into which the yarn Y drawn by the yarn-pulling lever 81 is introduced.

The piecing section 50 twists and folds the yarn ends of the yarn Y untwisted by the untwisting section (not shown), thereby piecing the yarn ends. When the yarn ends are twisted together in the joint 50, the yarn end of the yarn Y is pulled out from the untwisting portion by the feed screw 81, and the tip end portion of the yarn end of the yarn Y is pressed near the joint 50 by the twist stop lever 82.

The housing 20 is provided with a drive motor 23 as a drive source for driving the pair of feed screw bars 81 and the pair of twist stop bars 82. The drive motor 23 is, for example, a stepping motor. The drive motor 23 includes a drive shaft 24 having an axial direction in the vertical direction. The drive motor 23 drives and controls the feed screw 81 via the link mechanism 100 by rotating the drive shaft 24.

The link mechanism 100 is coupled to the drive motor 23 and the feed screw 81 (here, the upper feed screw 81). The link mechanism 100 includes, as the driving-side link portion 101, an arm 25 fixed to the drive shaft 24 and a coupling member 26 coupled to the arm 25. The link mechanism 100 has a driven-side link portion 102 provided continuously with the wire-pulling lever 81 as a structure driven by the driving-side link portion 101. The coupling member 26 has a stepped plate shape extending in a predetermined direction. The rear end of the connecting member 26 is attached to the arm 25 via a shaft 26x whose vertical direction is axial. Thereby, the coupling member 26 is coupled to the arm 25 so as to be rotatable about the shaft portion 26 x.

The driven-side link portion 102 has a plate shape, and is provided continuously to the base end portion of the feed screw 81 so as to be bent like a crank in a plan view. The driven-side link portion 102 is attached to the distal end portion of the coupling member 26 via a shaft portion 26y that is axial in the vertical direction. Thereby, the driven-side link portion 102 is coupled to the coupling member 26 so as to be rotatable about the shaft portion 26 y. The tip end portion of the driven-side link portion 102 (in other words, the base end portion of the wire-pulling lever 81) is rotatably supported by the support shaft 27 fixed to the housing 20.

The pair of check twist levers 82 are rotatably supported by the support shaft 27 via the holding portions 82 x. The pair of twist stop levers 82 are biased toward the joint portion 50 side (closing direction) by a torsion coil spring (spring member) 28 as an elastic body rotatably attached to the support shaft 27. An engaging piece 82y that engages with the feed screw 81 is formed on the twist stop lever 82. The engaging piece 82y biases the wire-pulling lever 81 in the closing direction by the biasing force of the torsion coil spring 28. In other words, the wire-pulling lever 81 is biased in the closing direction by the torsion coil spring 28 via the twist stop lever 82. Thereby, the pair of twist stop levers 82 and the pair of feed screw bars 81 can be rotated synchronously in the closing direction and the opening direction opposite thereto.

A stopper bolt 29 is provided on the proximal end side of the stopper rod 82. The stopper bolt 29 is a stopper for stopping the yarn stopping rod 82 at a predetermined position to control the splicing and feeding of the yarn Y spliced by the splicing part 50. The stopper bolt 29 is screwed to the holding portion 82x with its distal end exposed, thereby rotating integrally with the check rod 82. When the thread pulling lever 81 and the twist stopping lever 82 are rotated by a predetermined amount in the closing direction from the standby position, the front end of the stopper bolt 29 contacts a part of the housing 20. Thus, after the contact, only the feed screw 81 is rotated in the closing direction.

Next, the operation of the joint device 10 controlled by the control unit 16 will be described with reference to fig. 2 to 5. As shown in fig. 2 and 3, the pair of feed screw bars 81 and the pair of twist stop bars 82 are opened to be located outside the 1 st guide plate 21 and the 2 nd guide plate 22 when viewed from the front side in the state where the pair of feed screw bars 81 and the pair of twist stop bars 82 are located at the standby position.

In a state where the pair of feed screw bars 81 and the pair of twist stop bars 82 are at the standby position (hereinafter, referred to as a "standby position state"), at least a part of the link mechanism 100 is positioned at the dead point. Specifically, the driving-side link portion 101 (in other words, the crank configured to include the arm 25 and the coupling member 26) of the link mechanism 100 is positioned at the dead point in the standby position state. At this time, the torsion coil spring 28 is deformed so as to be able to exert its elastic force, and the torsion force, which is the torsion moment, is increased. Further, by supplying a holding current to the drive motor 23, the pair of feed screw bars 81 and the pair of twist stop bars 82 are held at the standby position (predetermined position) by the driving force of the drive motor 23 against the urging force of the torsion coil spring 28.

The "dead point" is a position where adjacent link members are present on a straight line, and has a state where the driving side can move in any one of one and the other rotational directions when driving is applied from the driven side. The dead center is also referred to as dead center. At the dead point of the present embodiment, the line segment connecting the drive shaft 24 and the shaft portion 26x and the line segment connecting the shaft portion 26x and the shaft portion 26y are located on the same straight line when viewed from the axial direction of the drive shaft 24. The dead point in the present embodiment has a state in which the vector direction (arrow S2 in the figure) of the biasing force (arrow S1 in the figure) of the torsion coil spring 28 acting on the drive motor 23 intersects the approximate center of the drive shaft 24. At this dead point, a static balance is established with respect to the force that pulls the shaft portion 26x via the coupling member 26 by the biasing force of the torsion coil spring 28.

The above-mentioned single straight line includes a meaning of being substantially a single straight line in addition to being entirely a single straight line, and includes, for example, a case where a line segment connecting the shaft portion 26x and the shaft portion 26y is inclined at an angle of 30 ° or less with respect to a line segment connecting the drive shaft 24 and the shaft portion 26 x.

In the yarn splicing device 10, if the yarn Y is cut by the cutter 9 or if the yarn Y is broken due to excessive tension when a yarn defect is detected, the yarn Y (upper yarn and lower yarn) is guided to the yarn splicing device 10 by the upper yarn catching device 12 and the lower yarn catching device 7 (see fig. 1). Subsequently, an operating current is supplied to the drive motor 23, the drive shaft 24 is rotated by a predetermined amount by a driving force against the urging force of the torsion coil spring 28, and the pair of feed screw shafts 81 are rotated (moved) in the closing direction via the link mechanism 100. Accordingly, the pair of twist stop levers 82 rotates in the closing direction together with the pair of feed screws 81 by the biasing force of the torsion coil spring 28.

Thus, the yarn Y guided by the upper yarn catching device 12 and the lower yarn catching device 7 is drawn toward the yarn splicing section 50, guided into the guide grooves of the 1 st guide plate 21 and the 2 nd guide plate 22, and guided into the yarn splicing nozzle of the yarn splicing section 50. The yarn Y is cut by the yarn cutting section while being held by the yarn holding section. A gas for detwisting is jetted into a detwisting nozzle of the detwisting portion, and a yarn end of the yarn Y is taken out from the detwisting portion and detwisted.

Next, if the drive shaft 24 is further rotated by a predetermined amount by continuing to supply the operating current to the drive motor 23, the pair of feed screw bars 81 are further rotated in the closing direction via the link mechanism 100, and the pair of check twist bars 82 are further rotated in the closing direction by the biasing force of the torsion coil spring 28, and then the tip end portion of the check bolt 29 comes into contact with a part of the housing 20 (see fig. 4). Therefore, if the drive shaft 24 of the drive motor 23 is subsequently further rotated in the arrow R1 direction, the rotation of the pair of stopper bars 82 is stopped by the frame body 20 via the stopper bolt 29, and only the pair of feed screw bars 81 is further rotated in the closing direction (see fig. 5).

Thereby, the yarn end of the untwisted yarn Y is pulled out from the untwisting portion, and the tip end of the yarn Y is pressed near the joint portion 50 by the pair of twist stop levers 82 rotating together with the pair of feed levers 81. The joint portion 50 is sprayed with a joint gas to twist and ply the yarn ends of the untwisted yarn Y. Subsequently, an operating current is supplied to the drive motor 23 to rotate the drive shaft 24 in the opposite direction, and the pair of feed bars 81 and the pair of twist stop bars 82 are returned to the standby position. Thereby, the yarn Y joined by twisting the yarn ends together in a plied manner is restored to the traveling path of the yarn Y on the front side of the piecing device 10.

Here, as shown in fig. 1, the winding unit 1 of the present embodiment includes a vibration detection sensor (vibration detection unit) 41 for detecting vibration of the joint device 10, and a motor current adjustment unit 42 for adjusting a current supplied to the drive motor 23 to control a driving force (torque) of the drive motor 23.

The vibration detection sensor 41 is provided to the joint device 10. The locations and the number of the vibration detection sensors 41 are not particularly limited, and any locations and number may be used as long as they can detect the vibration of the joint device 10. As the vibration detection sensor 41, for example, a contact type vibration sensor can be used. The vibration detection sensor 41 includes a strain gauge provided in the joint device 10, detects at least one of displacement, velocity, and acceleration of the joint device 10 using the strain gauge, and detects vibration generated in the joint device 10 based on the detected value.

The vibration detection sensor 41 outputs a detection result (for example, a signal relating to the detected vibration) to the motor current adjustment unit 42. The vibration detection sensor 41 is not particularly limited, and various sensors such as a noncontact vibration sensor can be used. The vibration of the joint device 10 includes the magnitude (amplitude) and frequency of the vibration.

The motor current adjusting section 42 adjusts the current supplied to the drive motor 23 based on the detection result of the vibration detection sensor 41. When the magnitude of the vibration detected by the vibration detection sensor 41 is less than the threshold value, the motor current adjustment unit 42 determines that the vibration of the joint device 10 is small in the normal state (1 st state), and supplies the 1 st value of the operating current and/or the holding current to the drive motor 23. Thus, the thread pulling lever 81 and the twist stopping lever 82 are moved and/or held by the 1 st driving force.

On the other hand, when the magnitude of the vibration detected by the vibration detection sensor 41 is equal to or greater than the threshold value, the motor current adjustment unit 42 determines that the vibration of the joint device 10 is large (the 2 nd state), and supplies the operating current and/or the holding current of the 2 nd value larger than the 1 st value to the drive motor 23. Thus, the thread pulling lever 81 and the twist stopping lever 82 are moved and/or held by the 2 nd driving force larger than the 1 st driving force.

The 1 st value and the 2 nd value supplied to the drive motor 23 are switched based on the biasing force of the torsion coil spring 28 and the magnitude of the vibration of the joint device 10. For example, the 1 st value is 0.4A. The 2 nd value was 1.0A. The 2 nd value may be a function value of the vibration that becomes larger as the vibration increases. The 1 st value and the 2 nd value may be stored in the motor current adjustment unit 42 in advance as a map relating to the magnitude of the vibration detected by the vibration detection sensor 41.

In the winding unit 1, a large current is not always supplied to the drive motor 23, but a 1 st value of current is supplied to the drive motor 23 in the 1 st state, which is a normal state in which the vibration of the joint device 10 is small. On the other hand, when the 2 nd state of the yarn splicing device 10 in which the vibration is large, such as the start of winding the yarn when the yarn splicing device 10 is accidentally fluctuated (the yarn hooking rod 81 and the twist stopping rod 82 are positionally deviated), a large 2 nd value of current is supplied to the drive motor 23. This can suppress the fluctuation. Therefore, it is possible to suppress the current (power consumption) supplied to the drive motor 23 while preventing the joint device 10 from being accidentally fluctuated by the vibration. That is, the current supplied to the drive motor 23 can be suppressed as much as possible, and the imbalance such as the increase in vibration due to, for example, the start of winding or an abnormal paper bobbin can be suppressed.

In the present embodiment, the current to be supplied to the drive motor 23 when the state of the winding unit 1 is in the 1 st state may be set to the 1 st value, and the current to be supplied to the drive motor 23 when the state is in the 2 nd state different from the 1 st state may be set to the 2 nd value larger than the 1 st value. Thus, for example, when the 2 nd state is a state in which the joint device 10 is unexpectedly changed from the 1 st state, it is possible to suppress the current supplied to the drive motor 23 while preventing the joint device 10 from being unexpectedly changed. Examples of the state of the winding unit 1 in the 1 st state include a state in which winding is stopped, and examples of the state of the winding unit 1 in the 2 nd state include a state in which winding is started, a state in which winding is stopped, and a state in which winding is accelerated.

In the winding unit 1, the yarn splicing device 10 includes a yarn pulling rod 81 and a twist stopping rod 82, and a torsion coil spring 28 that biases the yarn pulling rod 81 and the twist stopping rod 82 in a predetermined direction. The driving motor 23 moves the pair of thread take-up levers 81 and the pair of twist stop levers 82 or holds the pair of thread take-up levers 81 and the pair of twist stop levers 82 at the standby position by the driving force against the urging force of the torsion coil spring 28. The motor current adjustment unit 42 switches the 1 st value and the 2 nd value to be supplied to the driving motor 23 based on the biasing force of the torsion coil spring 28 and the magnitude of the vibration of the joint device 10. This enables the joint device 10 to be driven with less rattling, and also enables the joint device 10 to be suppressed from being displaced even when vibration is large.

The winding unit 1 includes a vibration detection sensor 41 for detecting vibration of the joint device 10, and the motor current adjustment unit 42 switches the 1 st value and the 2 nd value to be supplied to the drive motor 23 based on a detection result of the vibration detection sensor 41. This allows the current supplied to the drive motor 23 to be adjusted by detecting the actual vibration of the joint device 10. As a result, the drive control of the drive motor 23 can be performed with the minimum current required.

In the winding unit 1, a stepping motor is used as the drive motor 23. By using a stepping motor as the drive motor 23, accurate positioning control of the joint device 10 can be achieved by a simple circuit configuration, for example. In addition, the above-described operational effects of suppressing the supplied current while avoiding an unexpected variation in the joint device 10 are achieved by using an inexpensive stepping motor.

In the present embodiment, the 2 nd value is supplied to the drive motor 23 when the magnitude of the vibration of the joint device 10 detected by the vibration detection sensor 41 is equal to or greater than the threshold value, but the 2 nd value may be supplied to the drive motor 23 when it is estimated that the vibration is large, for example, as will be exemplified below.

For example, a package state acquiring section may be provided which measures or calculates at least one of the winding length of the yarn wound around the package P (yarn length), the diameter of the package P, and the weight of the package P, and the motor current adjusting section 42 may switch the 1 st value and the 2 nd value to be supplied to the drive motor 23 based on the detection result or the calculation result of the package state acquiring section. Specifically, when the parameter is less than the predetermined value, the motor current adjusting unit 42 estimates that the vibration of the joint device 10 is small, and supplies the 1 st value to the drive motor 23. On the other hand, when the parameter is equal to or larger than the predetermined value, it is estimated that the vibration of the joint device 10 is large, and the 2 nd value is supplied to the drive motor 23.

The package state acquiring unit measures or calculates a parameter (at least any one of the winding length, the package diameter, and the package weight) related to the size of the package P, for example, as described later. That is, the package state acquiring unit detects the winding speed (yarn speed) of the yarn Y and calculates the winding length of the wound yarn Y by converting the detected winding speed. The package state acquiring unit detects the angle of the cradle 15, and calculates the diameter of the package P based on the detected angle of the cradle 15. Alternatively, the package state acquiring unit detects the winding speed of the yarn Y and the rotational speed of the package P, and calculates the diameter of the package P based on the detected winding speed of the yarn Y and the detected rotational speed of the package P. The package state acquiring section calculates the mass of the package P based on the acquired winding length of the yarn Y and the number of counts or the type of the yarn Y set by the input section 17.

According to this configuration, it is found that the yarn splicing device 10 may be unexpectedly changed if the parameter relating to the size of the package P becomes large, and therefore, the control can be performed based on the parameter relating to the size of the package P, and the 1 st and 2 nd values can be switched according to the parameter. Thus, the winding unit 1 can be realized by the winding state obtaining section which is usually provided, and it is not necessary to provide a special sensor such as the vibration detection sensor 41 which is additionally provided.

For example, a cradle angle detecting unit such as a cradle angle sensor for measuring the angle of the cradle 15 may be provided, and the motor current adjusting unit 42 may switch the 1 st value and the 2 nd value to be supplied to the drive motor 23 based on the detection result of the cradle angle detecting unit. Specifically, when the angle of the cradle 15 is less than the predetermined angle, the motor current adjusting unit 42 estimates that the vibration of the joint device 10 is small, and supplies the 1 st value to the drive motor 23. On the other hand, when the angle of the cradle 15 is equal to or larger than the predetermined angle, it is estimated that the vibration of the joint device 10 is large, and the 2 nd value is supplied to the drive motor 23.

According to this configuration, since it is found that the joint device 10 may be accidentally changed if the angle of the cradle 15 is large, the control can be performed based on the detected angle of the cradle 15, and the 1 st value and the 2 nd value can be switched according to the angle of the cradle 15. Thus, the winding unit 1 can be realized by the cradle angle detecting unit which is usually provided, and it is not necessary to provide a special sensor such as the vibration detecting sensor 41 which is additionally provided.

For example, a winding speed measuring unit that measures a winding speed of the yarn wound in the package P may be provided, and the motor current adjusting unit 42 may switch the 1 st value and the 2 nd value to be supplied to the drive motor 23 based on a measurement result of the winding speed measuring unit. Specifically, when the winding speed of the package P is less than the predetermined speed, the motor current adjusting unit 42 estimates that the vibration of the yarn splicing device 10 is small, and supplies the 1 st value to the drive motor 23. On the other hand, when the winding speed of the package P is equal to or higher than the predetermined speed, it is estimated that the vibration of the yarn splicing device 10 is large, and the 2 nd value is supplied to the drive motor 23. As the winding speed detecting section, for example, a non-contact photoelectric type fixed length device, that is, a photoelectric type fixed length device can be used.

According to this configuration, it is found that the yarn splicing device 10 may be unexpectedly changed if the winding speed of the package P is increased, and therefore, the control can be performed based on the measured winding speed of the package P, and the 1 st value and the 2 nd value can be switched according to the winding speed of the package P. Thus, the winding unit 1 can be realized by a winding speed detecting section which is usually provided, and a special sensor such as the vibration detecting sensor 41 which is additionally provided is not necessary.

For example, a winding speed setting unit that sets a winding speed of the yarn Y wound in the package P may be provided, and the motor current adjusting unit 42 may switch the 1 st value and the 2 nd value to be supplied to the driving motor 23 according to the setting value of the winding speed setting unit. Specifically, when the set value of the winding speed is less than the predetermined speed, the motor current adjusting unit 42 estimates that the vibration of the joint device 10 is small, and supplies the 1 st value to the drive motor 23. On the other hand, when the set value of the winding speed is equal to or higher than the predetermined speed, it is estimated that the vibration of the joint device 10 is large, and the 2 nd value is supplied to the drive motor 23. The input unit 17 can be applied as the winding speed setting unit.

According to this configuration, since it is found that the joint device 10 may be accidentally changed if the set value of the winding speed is increased, the control can be performed based on the set winding speed, and the 1 st value and the 2 nd value can be switched according to the set value of the winding speed. Thus, the winding unit 1 can be realized by the winding speed setting section which is usually provided, and it is not necessary to provide a special sensor such as the vibration detection sensor 41 which is additionally provided.

In the winding unit 1, the yarn splicing device 10 may have a link mechanism for transmitting the driving force of the drive motor 23 to the yarn processing section acting on the yarn Y, the link mechanism including a cam, a cam follower driven by the cam, and a spring member for urging the yarn processing section in a predetermined direction, and the cam follower may be urged toward the cam by the spring member. For example, the joint device 10 may be configured such that the cam is rotated in accordance with the rotation of the drive motor 23, and the thread pulling lever 81 and the twist stop lever 82 biased in the opening direction by the torsion coil spring 28 are moved in the closing direction via the cam follower. In this case, in the joint device 10, power transmission with less rattling can be performed by the cam and the cam follower. Further, it is possible to avoid the cam from performing an unexpected operation due to the state of the winding unit 1.

In the present embodiment, as the yarn processing section acting on the yarn Y in the yarn splicing device 10, a yarn holding section for holding the yarn Y pulled by the yarn pulling lever and/or a yarn cutting section for cutting the yarn Y held by the yarn holding section may be applied. In this case, a drive motor for moving or holding the yarn holding section and/or the yarn cutting section at a predetermined position is provided, and the current (the operating current and/or the holding current) supplied to the drive motor is adjusted by the motor current adjusting section 42.

[ 2 nd embodiment ]

Next, embodiment 2 will be explained. In the description of the present embodiment, differences from embodiment 1 will be described.

As shown in fig. 6, the winding unit 1B of the present embodiment is different from the winding unit 1 in that it further includes a contact pressure adjusting mechanism 30 for adjusting a contact pressure between the winding drum 14 and the package P. The contact pressure adjusting mechanism 30 constitutes a winding processing mechanism that performs a process for causing the winding device 13 to wind the yarn Y. The contact pressure adjusting mechanism 30 rotatably supports the cradle 15 by a rotating shaft 31 disposed parallel to the axis of the package P. The contact pressure adjusting mechanism 30 increases or decreases the contact pressure by controlling the torque applied to the cradle 15 around the rotation shaft 31.

The contact pressure adjustment mechanism 30 includes: a connecting plate 32 connected to the rotary shaft 31 so as to be non-rotatable, and a gear 33 supported to be rotatable coaxially with respect to the rotary shaft 31. 3 connecting pins 34 are provided on the connecting plate 32, and the 3 connecting pins 34 are configured to form a triangle. Also provided on the gear 33 are 3 connecting pins 35, the 3 connecting pins 35 being configured to form a triangle.

Spring members 36 such as coil springs are provided between the alternately continuous connecting pins 34 and 35. The spring member 36 connects the adjacent connecting pins 34 and 35. The spring member 36 deforms (expands or contracts) when the gear 33 and the link plate 32 rotate relative to each other in opposite directions. The gear 33 is driven by a drive motor 38 via a drive pinion 37. The drive motor 38 is a drive source for driving the gear 33. The drive motor 38 is, for example, a stepping motor.

The gear 33 is rotated to cause the spring member 36 continuing between the connecting pins 34, 35 to expand and contract. As a result, a torque is generated around the rotation shaft 31 in the connection plate 32, and further a torque is generated around the rotation shaft 31 in the cradle 15. The contact pressure between the package P and the winding drum 14 is increased or decreased by the action of the torque. Therefore, the contact pressure between the package P and the winding drum 14 is adjusted by adjusting the current supplied to the drive motor 38 and controlling the drive of the gear 33 by the drive motor 38.

The winding unit 1B of the present embodiment includes: a vibration detection sensor (vibration detection unit) 41B for detecting vibration of the cradle 15, and a motor current adjustment unit 42B for adjusting a current supplied to the drive motor 38 to control a driving force (torque) of the drive motor 38.

The vibration detection sensor 41B is provided in the cradle 15. The location and number of the vibration detection sensors 41B are not particularly limited, and may be a predetermined location and a predetermined number that can detect the vibration of the cradle 15. As the vibration detection sensor 41B, for example, a contact type vibration sensor can be used similarly to the vibration detection sensor 41. The vibration detection sensor 41B includes a strain gauge provided in the cradle 15, detects at least one of displacement, speed, and acceleration of the cradle 15 using the strain gauge, and detects vibration of the cradle 15 based on the detected value. The vibration detection sensor 41B outputs the detection result to the motor current adjustment unit 42B. The vibration of the cradle 15 includes the magnitude (amplitude) and frequency of the vibration.

The motor current adjustment unit 42B adjusts the current supplied to the drive motor 38 based on the detection result of the vibration detection sensor 41B. For example, when the magnitude of the vibration detected by the vibration detection sensor 41B is less than the threshold value, the motor current adjustment unit 42B determines that the vibration of the cradle 15 is small in the normal state (1 st state), and supplies the contact pressure current of the 1 st value to the drive motor 38. Thereby, the contact pressure between the package P and the winding drum 14 becomes the 1 st pressure.

On the other hand, when the magnitude of the vibration detected by the vibration detection sensor 41B is equal to or greater than the threshold value, the motor current adjustment unit 42B determines that the vibration of the cradle 15 is large (the 2 nd state), and supplies the contact pressure current of the 2 nd value larger than the 1 st value to the drive motor 38. Thereby, the contact pressure between the package P and the winding drum 14 becomes the 2 nd pressure larger than the 1 st pressure.

For example, the 1 st value is 0.4A. The 2 nd value was 1.0A. The 2 nd value may be a function value of the vibration that becomes larger as the vibration increases. The 1 st value and the 2 nd value are stored in advance in the motor current adjustment unit 42B as maps associated with the magnitude of the vibration detected by the vibration detection sensor 41B.

In the winding unit 1B, a large current is not always supplied to the drive motor 38, and a 1 st value of current is supplied to the drive motor 38 in the 1 st state, which is a normal state in which the vibration of the cradle 15 is small. On the other hand, when the 2 nd state in which the vibration of the cradle 15 is large, such as the start of winding of the yarn in which the cradle 15 is accidentally fluctuated (displaced), a large 2 nd value of current is supplied to the drive motor 38, and the fluctuation can be suppressed. Therefore, it is possible to prevent the cradle 15 from being unexpectedly varied by the vibration, and further prevent the variation in the contact pressure between the package P and the winding drum 14, and suppress the current supplied to the drive motor 38.

In the winding unit 1B, the contact state of the package P with the winding drum 14 can be kept constant regardless of the state of the winding unit 1B (the vibration state of the cradle 15). As a result, constant winding quality can be ensured.

In the present embodiment, the 2 nd value is supplied to the drive motor 38 when the magnitude of the vibration of the cradle 15 detected by the vibration detection sensor 41B is equal to or greater than the threshold value, but the 2 nd value may be supplied to the drive motor 38 when it is estimated that the vibration is large, as will be described later, and it is not necessary to provide a special sensor such as the vibration detection sensor 41B which is additionally added.

For example, a package state obtaining section may be provided which measures or calculates at least one of the winding length of the yarn wound in the package P, the diameter of the package P, and the weight of the package P, and the motor current adjusting section 42B may switch the 1 st value and the 2 nd value to be supplied to the drive motor 38 based on the measurement result or the calculation result of the package state obtaining section. Specifically, when the parameter relating to the size of the package P (at least any one of the winding length, the package diameter, and the package weight) is less than the predetermined value, it is estimated that the vibration of the cradle 15 is small, and the 1 st value is supplied to the drive motor 38. On the other hand, when the parameter is equal to or larger than the predetermined value, it is estimated that the vibration of the cradle 15 is large, and the 2 nd value is supplied to the drive motor 38.

For example, a cradle angle detecting unit that measures the angle of the cradle 15 may be provided, and the motor current adjusting unit 42B may switch the 1 st value and the 2 nd value to be supplied to the drive motor 38 according to the detection result of the cradle angle detecting unit. Specifically, when the angle of the cradle 15 is less than the predetermined angle, it is estimated that the vibration of the cradle 15 is small, and the 1 st value is supplied to the drive motor 38. On the other hand, when the angle of the cradle 15 is equal to or larger than the predetermined angle, it is estimated that the vibration of the cradle 15 is large, and the 2 nd value is supplied to the drive motor 38.

For example, a winding speed measuring unit that measures the winding speed of the yarn Y wound in the package P may be provided, and the motor current adjusting unit 42B may switch the 1 st value and the 2 nd value to be supplied to the drive motor 38 based on the measurement result of the winding speed measuring unit. Specifically, when the winding speed of the package P is less than the predetermined speed, it is estimated that the vibration of the cradle 15 is small, and the 1 st value is supplied to the drive motor 38. On the other hand, when the winding speed of the package P is equal to or higher than the predetermined speed, it is estimated that the cradle 15 vibrates greatly, and the 2 nd value is supplied to the drive motor 38.

For example, a winding speed setting unit that sets a winding speed of the yarn Y wound in the package P may be provided, and the motor current adjusting unit 42B may switch the 1 st value and the 2 nd value to be supplied to the drive motor 38 according to a set value of the winding speed setting unit. Specifically, when the set value of the winding speed is less than the predetermined speed, it is estimated that the vibration of the cradle 15 is small, and the 1 st value is supplied to the drive motor 38. On the other hand, when the set value of the winding speed is equal to or higher than the predetermined speed, it is estimated that the vibration of the cradle 15 is large, and the 2 nd value is supplied to the drive motor 38.

[ embodiment 3 ]

Next, embodiment 3 will be explained. As shown in fig. 7, the spinning machine (textile machine) 110 of the present embodiment includes a plurality of spinning units (yarn winding devices) 1C, a traveling carriage 113, a 1 st end frame 114, and a 2 nd end frame 115.

The plurality of spinning units 1C are arranged in a row. Each spinning unit 1C generates a yarn Y and winds the yarn Y around a package P. When the yarn Y is cut or broken by the yarn Y at some edge in a certain spinning unit 1C, the traveling carriage 113 performs a yarn splicing operation in the spinning unit 1C. The 1 st end frame 114 houses a suction source and the like for generating suction flows in the respective parts of the spinning unit 1C. The 2 nd end block 115 is provided with a cell control device C, a display screen D, and an input key K. An air supply source for generating a swirling flow of air or the like in each part of the spinning unit 1C is provided outside the spinning machine 110 (at a place remote from the spinning machine 110, for example, at an appropriate place in a factory where the spinning machine 110 is provided). The air supply source supplies compressed air to each part of the spinning machine 110 via a duct connected to the air supply source. The unit control device C centrally manages and controls each part of the spinning machine 110. The display screen D displays information and the like related to the setting content and/or the state of the spinning unit 1C. The air supply source may also be housed in the 1 st end bell 114. The air supply source may be regarded as a structure different from the spinning machine 110 in the case of being disposed away from the spinning machine 110, but may be regarded as one of the structural members of the spinning machine 110.

Each spinning unit 1C includes, in order from the upstream side in the traveling direction of the yarn Y, a draft device 116, an air spinning device 117, a yarn monitoring device 118, a tension sensor 119, a yarn accumulating device 121, a waxing device 122, and a winding device (winding unit) 123. A unit controller 130 that controls the operation of the spinning unit 1C is provided for a predetermined number of spinning units 1C.

The draft device 116 drafts the fiber bundle S. The air spinning device 117 twists the fiber bundle S drafted by the draft device 116 by the swirling flow of air to generate a yarn Y. The air spinning device 117 functions as a yarn feeding section capable of feeding the yarn Y. The yarn monitoring device 118 monitors information of the running yarn Y between the air spinning device 117 and the yarn accumulating device 121, and detects the presence or absence of a yarn defect based on the monitored information. When detecting a yarn defect, the yarn monitoring device 118 transmits a yarn defect detection signal to the unit controller 130. The yarn monitoring device 118 detects, for example, a thickness abnormality of the yarn Y and/or a foreign substance contained in the yarn Y as a yarn defect. The yarn monitoring device 118 also detects yarn breakage or the like.

The tension sensor 119 measures the tension of the running yarn Y between the air spinning device 117 and the yarn accumulating device 121, and transmits a tension measurement signal to the unit controller 130. When the unit controller 130 determines that there is an abnormality based on the detection result of the yarn monitoring device 118 and/or the tension sensor 119, the yarn Y is cut in the spinning unit 1C. Specifically, the supply of air to the air spinning device 117 is stopped, and the yarn Y is cut by interrupting the generation of the yarn Y. Alternatively, the yarn Y may be cut by an additional cutter.

The waxing device 122 applies wax to the yarn Y between the yarn accumulating device 121 and the winding device 123. The yarn accumulating device 121 removes slack of the yarn Y between the air spinning device 117 and the winding device 123. The yarn accumulating device 121 has a function of stably drawing out the yarn Y from the air spinning device 117, a function of preventing the yarn Y fed out from the air spinning device 117 from being accumulated and slackened when the yarn splicing operation is performed by the traveling carriage 113 or the like, and a function of preventing the tension variation of the yarn Y on the downstream side of the yarn accumulating device 121 from being transmitted to the air spinning device 117.

The winding device 123 winds the yarn Y to form a package P. The winding device 123 includes a cradle 141 and a traverse guide 143. The cradle 141 rotatably supports the package P. The cradle 141 is supported to be swingable so that the surface of the package P contacts the surface of a winding drum (not shown) with an appropriate pressure. The drive motor provided in the 2 nd end frame 115 drives the winding drums of the plurality of spinning units 1C, thereby rotating the package P in the winding direction in each spinning unit 1C. The traverse guide 143 of each spinning unit 1C is provided on the rotary shaft 125 shared by the plurality of spinning units 1C. The drive motor of the 2 nd end frame 115 reciprocally drives the rotating shaft 125, whereby the traverse guide 143 traverses the yarn Y by a predetermined width with respect to the rotating package P.

The traveling carriage 113 is a work carriage, and when the yarn Y is cut or broken by the yarn Y at some edge in a certain spinning unit 1C, the traveling carriage 113 travels to the spinning unit 1C and performs a yarn splicing operation. The traveling carriage 113 is provided with a joint device 126. The joint device 126 constitutes a winding processing mechanism. The yarn splicing device 126 is a yarn splicing device using air, a warp splicer using a base weft, a knotter mechanically splicing the yarn Y, or the like. In the traveling carriage 113, the yarn ends of the yarns Y are guided by the suction pipe and the suction nozzle, and the yarn Y is spliced by the splicing device 126.

The yarn splicing device 126 has a splicing part (not shown) for splicing the untwisted yarns Y by twisting the ends of the yarns to be twisted together. The yarn splicing device 126 is provided with a feed screw for adjusting the introduction position of the yarn end of the yarn Y at the splicing section, and a twist stop lever for restricting the yarn Y at the splicing section at a constant position, as a yarn processing section acting on the yarn Y.

The traveling carriage 113 of the present embodiment includes: a drive motor 131 for driving the yarn processing section provided in the yarn splicing device 126, a vibration detection sensor (vibration detection section) 41C for detecting vibration of the traveling carriage 113, and a motor current adjustment section 42C for adjusting a current supplied to the drive motor 131 to control a driving force of the drive motor 131.

The drive motor 131 is a drive source for driving the yarn processing section of the yarn splicing device 126. The drive motor 131 is, for example, a stepping motor. By supplying a holding current to the drive motor 131, the yarn processing section (yarn-setting lever and twist stop lever) of the yarn splicing device 126 is held at the standby position so as not to be movable.

The vibration detection sensor 41C is provided on the traveling carriage 113. The locations and the number of the vibration detection sensors 41C are not particularly limited, and may be any predetermined locations and a predetermined number of locations capable of detecting the vibration of the traveling carriage 113. As the vibration detection sensor 41C, for example, a contact type vibration sensor can be used as in the case of the vibration detection sensor 41 described above. The vibration detection sensor 41C includes a strain gauge provided on the traveling carriage 113, detects at least one of displacement, speed, and acceleration of the traveling carriage 113 using the strain gauge, and detects vibration of the traveling carriage 113 based on the detected value. The vibration detection sensor 41C outputs the detection result to the motor current adjustment unit 42C. The vibration of the traveling carriage 113 includes the magnitude (amplitude) and frequency of the vibration.

The motor current adjusting section 42C adjusts the holding current supplied to the drive motor 131 based on the detection result of the vibration detection sensor 41C. When the magnitude of the vibration detected by the vibration detection sensor 41C is less than the threshold value, the motor current adjustment unit 42C determines that the traveling carriage 113 is in a stopped state (1 st state) in which the vibration is small, and supplies the current of the 1 st value to the drive motor 131. On the other hand, when the magnitude of the vibration detected by the vibration detection sensor 41C is equal to or greater than the threshold value, the motor current adjustment unit 42C determines that the traveling carriage 113 is in the traveling state (2 nd state) in which the vibration is large, and supplies the current of the 2 nd value larger than the 1 st value to the drive motor 131.

For example, the 1 st value is 0.4A. The 2 nd value was 1.0A. The 2 nd value may be a function value of vibration that increases as the vibration of the traveling carriage 113 increases. The 1 st value and the 2 nd value are stored in advance in the motor current adjustment unit 42C as maps associated with the magnitude of the vibration detected by the vibration detection sensor 41C.

In the spinning machine 110, a large current is not always supplied to the drive motor 131, but a 1 st value of holding current is supplied to the drive motor 131 in a stopped state where the vibration of the traveling carriage 113 is small. On the other hand, in a traveling state where the vibration of the traveling carriage 113 is large, a large holding current of the 2 nd value is supplied to the drive motor 131. This can prevent the yarn processing portion of the yarn splicing device 126 from being changed to an unexpected state (positional deviation) due to vibration generated by the travel of the traveling carriage 113. Therefore, it is possible to suppress the current supplied to the drive motor 131 while preventing the joint device 126 from being accidentally fluctuated by the vibration.

In the present embodiment, the 2 nd value is supplied to the drive motor 131 when the magnitude of the vibration of the traveling carriage 113 detected by the vibration detection sensor 41C is equal to or greater than the threshold value, but as will be described later, the 2 nd value may be supplied to the drive motor 131 when it is estimated that the vibration is large, and it is not necessary to provide a special sensor such as the vibration detection sensor 41C which is additionally added.

For example, a speed sensor (traveling state acquisition unit) that measures the speed of the traveling carriage 113 and/or an acceleration sensor (traveling state acquisition unit) that measures the acceleration may be provided, and the motor current adjustment unit 42C may switch the 1 st value and the 2 nd value to be supplied to the drive motor 131 based on the measurement result of the speed sensor and/or the acceleration sensor. Specifically, when the measurement result of the speed sensor and/or the acceleration sensor is less than the predetermined value, it is estimated that the traveling carriage 113 is in a stopped state with small vibration, and the 1 st value is supplied to the drive motor 131 by the motor current adjustment unit 42C. On the other hand, when the measurement result of the speed sensor and/or the acceleration sensor is equal to or greater than the predetermined value, it is estimated that the traveling carriage 113 is in a traveling state with large vibration, and the 2 nd value is supplied to the drive motor 131 by the motor current adjustment unit 42C. For example, instead of the speed sensor and/or the acceleration sensor, a calculation unit (traveling state acquisition unit) that calculates the speed and/or the acceleration of the traveling carriage 113 based on a control command value sent to the traveling motor of the traveling carriage 113 may be provided. In this case, the motor current adjustment unit 42C switches the 1 st value and the 2 nd value based on the value calculated by the calculation unit. That is, a traveling state acquisition unit that acquires at least one of the speed and the acceleration of the traveling carriage 113 may be provided, and the motor current adjustment unit 42C may switch the 1 st value and the 2 nd value to be supplied to the drive motor 131 according to the value acquired by the traveling state acquisition unit.

For example, a winding speed measuring unit that measures the winding speed of the yarn wound in the package P may be provided, and the motor current adjusting unit 42C may switch the 1 st value and the 2 nd value to be supplied to the drive motor 131 based on the measurement result of the winding speed measuring unit. Specifically, when the winding speed of the package P is less than the predetermined speed, it is estimated that the traveling carriage 113 is in a stopped state with less vibration, and the 1 st value is supplied to the drive motor 131. On the other hand, when the winding speed of the package P is equal to or higher than the predetermined speed, it is estimated that the traveling carriage 113 is in a traveling state with large vibration, and the 2 nd value is supplied to the drive motor 131.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. In the above embodiment, the torsion coil spring 28 is used as the spring member, but various elastic members may be used as long as they apply force to at least a part of the movable portion.

The motor current adjusting sections 42, 42B, and 42C of the above embodiments control the driving force (torque) by adjusting the current supplied to the driving motors 23, 38, and 131, but instead of or in addition to this, the driving force may be controlled by adjusting the voltage and/or the electric power supplied to the driving motors 23, 38, and 131.

Claims

1. A yarn winding device is provided, which comprises a yarn winding device,

the yarn winding device comprises:

a yarn feeding section capable of feeding a yarn;

a winding unit that winds the yarn supplied from the yarn supply unit to form a package;

a winding processing mechanism that performs processing for causing the winding unit to wind the yarn; and

a drive motor that drives the take-up processing mechanism,

wherein,

the yarn winding device includes a motor current adjusting unit that sets a current supplied to the drive motor to a 1 st value when a state of the yarn winding device is a 1 st state, and sets a current supplied to the drive motor to a 2 nd value larger than the 1 st value when the state of the yarn winding device is a 2 nd state different from the 1 st state,

the 2 nd state is a state in which the vibration of the winding processing mechanism is larger than the 1 st state, or a state in which the vibration of the winding processing mechanism is estimated to be larger than the 1 st state.

2. The yarn take-up device according to claim 1,

the take-up processing mechanism includes: a yarn processing section for applying a yarn; and a spring member for urging the yarn processing section in a predetermined direction,

the drive motor moves the yarn processing section or holds the yarn processing section at a predetermined position by a drive force against an urging force of the spring member,

the motor current adjustment unit switches the 1 st value and the 2 nd value to be supplied to the drive motor based on the biasing force of the spring member and the magnitude of the vibration of the winding mechanism.

3. The yarn take-up device according to claim 1 or 2,

the yarn winding device is provided with a vibration detection part for detecting the vibration of the winding processing mechanism,

the motor current adjusting unit switches the 1 st value and the 2 nd value to be supplied to the drive motor according to a detection result of the vibration detecting unit.

4. The yarn take-up device according to claim 1 or 2,

the yarn winding device includes a package state acquisition unit that measures or calculates at least one of a winding length of the yarn wound in the package, a diameter of the package, and a weight of the package,

the motor current adjusting unit switches the 1 st value and the 2 nd value to be supplied to the drive motor according to the measurement result or the calculation result of the winding state acquiring unit.

5. The yarn take-up device according to claim 1 or 2,

the yarn winding device includes a winding speed measuring section for measuring a winding speed of the yarn wound in the package,

the motor current adjusting unit switches the 1 st value and the 2 nd value to be supplied to the drive motor according to the measurement result of the winding speed measuring unit.

6. The yarn take-up device according to claim 1 or 2,

the yarn winding device includes a winding speed setting unit that sets a winding speed of the yarn wound in the package,

the motor current adjusting unit switches the 1 st value and the 2 nd value to be supplied to the drive motor in accordance with a set value of the winding speed setting unit.

7. The yarn winding device according to any one of claims 1 to 6,

the winding processing mechanism is a piecing device for piecing the broken yarn,

the yarn splicing device has a link mechanism for transmitting a driving force of the drive motor to a yarn processing section acting on a yarn,

the link mechanism includes a cam, a cam follower driven by the cam, and a spring member for urging the yarn processing section in a predetermined direction,

the cam follower is urged toward the cam by the spring member.

8. The yarn winding device according to any one of claims 1 to 6,

the winding section has an auxiliary roller for assisting in supporting the package,

the winding processing mechanism comprises: a cradle for rotatably supporting the package; and a contact pressure adjusting mechanism for adjusting a contact pressure between the assist roller and the package by the drive motor.

9. The yarn take-up device according to any one of claims 1 to 8,

the drive motor is a stepper motor.

10. A fiber machine is provided, which comprises a machine body,

the textile machine is provided with:

a plurality of yarn winding devices, each of the plurality of yarn winding devices including: a yarn feeding section capable of feeding a yarn; and a winding section that winds the yarn supplied from the yarn supplying section to form a package;

a traveling carriage capable of traveling in a direction in which the plurality of yarn winding devices are arranged;

a winding processing mechanism provided on the traveling carriage and including a yarn splicing device that splices a cut yarn among the plurality of yarn winding devices, the yarn splicing device having a yarn splicing request;

a yarn processing section that is provided in the yarn splicing device and acts on the yarn; and

a drive motor provided to the traveling carriage and driving the yarn processing section,

wherein,

the textile machine is provided with a motor current adjusting part which sets the current supplied to the driving motor to a 1 st value when the state of the traveling trolley is a 1 st state, sets the current supplied to the driving motor to a 2 nd value larger than the 1 st value when the state of the traveling trolley is a 2 nd state different from the 1 st state,

the 2 nd state is a state in which the vibration of the traveling carriage is larger than the 1 st state, or a state in which the vibration of the traveling carriage is estimated to be larger than the 1 st state.

11. The textile machine of claim 10,

the textile machine is provided with a vibration detection part for detecting the vibration of the traveling trolley,

12. The textile machine of claim 10,

the textile machine includes a traveling state acquisition unit that acquires a value of at least one of a speed and an acceleration of the traveling carriage,

the motor current adjusting unit switches the 1 st value and the 2 nd value to be supplied to the drive motor according to the value acquired by the traveling state acquiring unit.