EP3159294A1 - Yarn winding device - Google Patents
Yarn winding device Download PDFInfo
- Publication number
- EP3159294A1 EP3159294A1 EP16195332.8A EP16195332A EP3159294A1 EP 3159294 A1 EP3159294 A1 EP 3159294A1 EP 16195332 A EP16195332 A EP 16195332A EP 3159294 A1 EP3159294 A1 EP 3159294A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- section
- suction
- catching
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004804 winding Methods 0.000 title claims abstract description 56
- 238000012806 monitoring device Methods 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 description 15
- 230000037431 insertion Effects 0.000 description 15
- 230000001276 controlling effect Effects 0.000 description 13
- 230000007547 defect Effects 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 8
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/08—Automatic end-finding and material-interconnecting arrangements
- B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the present invention relates to a yarn winding device.
- a yarn catching section mounted on a yarn winding device that catches a yarn when a yarn breaks and the like is known in the art.
- the yarn winding device equipped with a yarn-end blower that feeds a yarn end of a yarn supplying bobbin to a winding section side by the action of an air current, and a yarn catching section that catches the yarn end fed by the yarn-end blower is disclosed in Japanese Patent Application Laid-open No. 2012-20852 .
- a suction force is constantly generated when the yarn winding device is operating.
- the suction force is generated even when yarn catching is not required. Because a negative pressure source that generates the suction force constantly consumes power, the conventional yarn winding devices are not efficient.
- a yarn winding device includes a yarn supplying section that supports a yarn supplying bobbin on which a yarn is wound; a winding section that winds the yarn pulled from the yarn supplying bobbin supported in the yarn supplying section; a yarn-end blower that blows off a yarn end from the yarn supplying bobbin to the winding section side by blowing an air current; and a yarn catching section that catches the yarn end blown off by the yarn-end blower.
- the yarn catching section includes a main body and a suction section that comprises a cylindrical member on which a suction port that sucks the yarn is formed.
- the suction section is arranged so as to be capable of performing a reciprocating linear movement in an axial direction of the cylindrical member in the main body, in which a suction force is generated in the suction port when the suction section is at a first position that is near a yarn path of the yarn that moves from the yarn supplying section to the winding section, and the suction force is not generated in the suction port when the suction section is at a second position that is retracted from the yarn path.
- the suction section of the yarn catching section when the suction section of the yarn catching section is at the first position that is near the yarn path of the yarn that moves from the yarn supplying section to the winding section, the suction force is generated in the suction port, and when the suction section of the yarn catching section is at the second position that is retracted from the yarn path, the suction force is not generated in the suction port.
- the suction section when the yarn end is not getting sucked, the suction section is moved to the second position so that the suction force cannot be generated in the suction port. Consequently, power consumption by the negative pressure source when the yarn end is not getting caught can be reduced. As a result, an efficient operation can be achieved in the yarn winding device.
- the yarn catching section includes a driving section that causes the suction section to perform the reciprocating movement, wherein the driving section causes the suction section to move to the first position and to the second position.
- the driving section causes the suction section to move to the second position when the yarn end is not getting sucked so that power consumption by the negative pressure source can be reduced more reliably.
- the main body includes a hollow section that forms a space where the suction section is positioned in a partitioned manner, and in which a negative pressure acts by an action of a negative pressure source.
- the suction port is arranged on a first end thereof in an axial direction and a second end thereof is closed, and an opening that communicates with an inner section is arranged between the first end and the second end.
- the driving section causes the suction section to move to the first position that provides communication between the opening and the hollow section, and to the second position whereby the opening is closed by the main body. In this configuration, the suction section is moved to the second position so that the opening that communicates with the inner section of the suction section is closed. Therefore, in the second position, the suction force is not generated in the suction section. Consequently, the power consumption by the negative pressure source can be reliably reduced.
- the above yarn winding device further includes a yarn joining device that joins the yarn of the yarn supplying bobbin caught by the yarn catching section and the yarn wound on the winding device.
- the driving section in addition to the first position and the second position, moves the suction section to a third position at which a weaker suction force than that generated at the first position is generated in the suction port by providing communication between a part of the opening and the hollow section, and moves the suction section to the third position when the yarn joining device is joining the yarn.
- the suction of the yarn end in the suction section is maintained. In such a case, if the suction force applied by the suction section on the yarn end is significant, a yarn breakage may occur. Therefore, the suction force can be weakened by moving the suction section to the third position that provides the communication between the part of the opening and the hollow section. Consequently, the yarn breakage during the yarn joining can be minimized.
- the above yarn winding device further includes a cutter that cuts the yarn, and a yarn monitoring device that monitors a state of the yarn.
- the yarn joining device is arranged between the yarn supplying section and the winding section, and joins the yarn disconnected between the yarn supplying section and the winding section, and the yarn catching section, the cutter and the yarn monitoring device are arranged in this sequence order downstream of the yarn joining device. According to such a configuration, when the yarn is disconnected by the cutter upon detection of, for example, a yarn defect by the yarn monitoring device, the yarn catching section can reliably catch the disconnected yarn, and the caught yarn can be guided to the yarn joining device.
- the above yarn winding device further includes a cutter that cuts the yarn, a yarn monitoring device that monitors a state of the yarn, and a yarn accumulating device that pulls and accumulates the yarn from the yarn supplying section.
- the yarn joining device is arranged between the yarn supplying section and the yarn accumulating device, and joins the yarn disconnected between the yarn supplying section and the yarn accumulating device, and the yarn catching section, the cutter, the yarn monitoring device, and the yarn accumulating device are arranged in this order downstream of the yarn joining device. According to such a configuration, when the yarn is disconnected by the cutter upon detection of, for example, a yarn defect by the yarn monitoring device, the yarn catching section can reliably catch the disconnected yarn, and the caught yarn can be guided to the yarn joining device.
- the yarn catching section includes a detecting section that detects the yarn end sucked in the suction port. With this configuration, whether the yarn end is sucked into the suction section can be detected.
- the yarn catching section includes a shutter that opens or closes the suction port in accordance with a movement of the suction section.
- the suction force changes depending on the position at which the suction section is positioned. Consequently, by moving the suction section to the position at which the suction port is closed by the shutter when the yarn is not getting sucked, the power consumption by the negative pressure source can be reduced more reliably.
- the yarn catching section includes a driving section that causes the suction section to perform the reciprocating movement, and the driving section moves the suction section to the first position where the shutter opens to open the suction port, and to the second position where the suction port is closed by the shutter.
- the suction section is moved to the second position, the suction port is closed by the shutter. Therefore, at the second position, the suction force is not generated in the suction section. Consequently, the power consumption by the negative pressure source can be reliably reduced.
- upstream and downstream refer to upstream and downstream in a traveling direction of a yarn during spinning, respectively.
- an automatic winder 1 includes a plurality of winder units (yarn winding devices) 2 that are arranged side by side, a machine-frame controlling device 3, a yarn-supply bobbin feeder 4, a doffing device 5, and a not shown blower box.
- the machine-frame controlling device 3 communicates with the winder units 2.
- the operator of the automatic winder 1 can centrally manage the winder units 2 by performing appropriate operations on the machine-frame controlling device 3.
- the machine-frame controlling device 3 controls operations of the yarn-supply bobbin feeder 4 and the doffing device 5.
- the yarn-supply bobbin feeder 4 sets one yarn supplying bobbin 21 on each of conveying trays 26 by a not shown mechanism and feeds the yarn supplying bobbin 21 set on the conveying tray 26 to each of the winder units 2.
- the doffing device 5 moves to the position of a winder unit 2 in which a package 30 has been fully wound (a state where a prescribed amount of a yarn 20 has been wound) in the winder unit 2, and removes the fully wound package 30.
- the doffing device 5 sets an empty (a state where no yarn is wound) winding bobbin 22 in the place of the package 30 that has been removed from the winder unit 2.
- the winder unit 2 includes a yarn supplying section 6, a yarn accumulating device 18, and a package forming section 8.
- the yarn 20 from the yarn supplying bobbin 21 of the yarn supplying section 6 is unwound, the unwound yarn 20 is temporarily accumulated in the yarn accumulating device 18, and thereafter the accumulated yarn 20 is unwound and wound onto the winding bobbin 22 to form the package 30.
- the yarn supplying section 6 supports the yarn supplying bobbin 21 set on the conveying tray 26 at a predetermined position, and unwinds the yarn 20 from the yarn supplying bobbin 21 to supply the yarn 20.
- the yarn supplying section 6 discharges the empty yarn supplying bobbin 21 from which all the yarn 20 has been unwound and receives another yarn supplying bobbin 21 from the yarn-supply bobbin feeder 4.
- the yarn accumulating device 18 is arranged between the yarn supplying section 6 and the package forming section 8.
- the yarn accumulating device 18 is arranged at a position upstream of the package forming section 8 in a traveling direction of the yarn 20.
- the yarn accumulating device 18 temporarily accumulates the yarn 20 supplied from the yarn supplying section 6.
- the yarn accumulating device 18 is arranged such that the yarn 20 accumulated therein can be pulled by the package forming section 8.
- the yarn accumulating device 18 includes a yarn accumulating roller 32 on which the yarn 20 is wound, and a roller driving motor 33 that rotationally drives the yarn accumulating roller 32.
- the roller driving motor 33 causes the yarn accumulating roller 32 to rotate in a winding direction so that the yarn 20 from the yarn supplying section 6 is wound.
- the roller driving motor 33 can also cause the yarn accumulating roller 32 to rotate in an opposite direction of the winding direction.
- the package forming section 8 includes a cradle 23 on which the winding bobbin 22 can be mounted and a traversing drum 24 that drives the winding bobbin 22 while traversing the yarn 20.
- the package forming section 8 comprises a winding section.
- the cradle 23 rotatably supports the winding bobbin 22 (or the package 30).
- the cradle 23 is pivoted so that an outer peripheral surface of the package 30 mounted thereon is in contact with or separated from an outer peripheral surface of the traversing drum 24.
- the traversing drum 24 is rotationally driven by a not shown driving source (an electric motor or the like).
- the rotation of the traversing drum 24 that is in contact with the outer peripheral surface of the winding bobbin 22 or the package 30 rotationally drives the winding bobbin 22.
- the traversing drum 24 has a not shown traversing groove formed on the outer peripheral surface thereof. The traversing groove enables the yarn 20 to be traversed by a predetermined width. With this configuration, the yarn 20 can be wound on the winding bobbin 22 while being traversed and the package 30 of a predetermined length and shape can be formed.
- the winder unit 2 includes various devices on a yarn traveling path from the yarn supplying section 6 via the yarn accumulating device 18 to the package forming section 8. Specifically, an unwinding assisting device 10, a first blower (a yarn-end blower) 11, a second catching section 12, a yarn joining device 13, a first catching section (a yarn catching section) 14, a tension applying device 15, a cutter 16, a yarn monitoring device 17, and a second blower 48 are arranged sequentially on the yarn path of the yarn 20 in the direction from the yarn supplying section 6 arranged upstream to the yarn accumulating device 18 arranged downstream.
- an unwinding assisting device 10 a first blower (a yarn-end blower) 11, a second catching section 12, a yarn joining device 13, a first catching section (a yarn catching section) 14, a tension applying device 15, a cutter 16, a yarn monitoring device 17, and a second blower 48 are arranged sequentially on the yarn path of the yarn 20 in the direction from the yarn supplying section 6 arranged upstream to the yarn
- a balloon is formed above the yarn supplying bobbin 21 by the swaying yarn 20 that is being unwound from the yarn supplying bobbin 21.
- the unwinding assisting device 10 assists in the unwinding of the yarn 20 by appropriately controlling a size of the balloon by bringing a movable member 27 into contact with the balloon.
- the first blower 11 is an air sucker device arranged at a position downstream of the unwinding assisting device 10 but near the unwinding assisting device 10.
- the first blower 11 blows compressed air to form an air current that blows off the yarn 20 up to the first catching section 14. Accordingly, in the event of a yarn breakage, for example, a yarn end on the yarn supplying bobbin 21 side can be blown off toward the yarn joining device 13 by the first blower 11.
- an auxiliary blower 28 is arranged in the yarn supplying section 6 of the winder unit 2.
- the auxiliary blower 28 blows compressed air into the internally hollow conveying tray 26 and the yarn supplying bobbin 21 and generates an air current at an end portion of the yarn supplying bobbin 21 to blow off the yarn 20 from the yarn supplying bobbin 21 toward the first blower 11.
- the auxiliary blower 28 and the first blower 11 operate in conjunction with each other to reliably convey the yarn end from the yarn supplying bobbin 21 that has just been set in the yarn supplying section 6 toward the yarn joining device 13.
- the second catching section 12 is arranged at a position upstream of the yarn joining device 13 but near the yarn joining device 13.
- the second catching section 12 is connected to a not shown suction air current generating source and generates a suction air current during yarn joining.
- the second catching section 12 sucks and catches the yarn 20 on the yarn accumulating device 18 side by the action of the suction air current.
- the yarn joining device 13 joins the disconnected yarn 20.
- the yarn joining device 13 joins the yarn 20 from the yarn supplying bobbin 21 side and the yarn 20 from the yarn accumulating device 18 side when the yarn 20 is cut by the cutter 16 upon detection of a yarn defect by the yarn monitoring device 17, when the yarn 20 being unwound from the yarn supplying bobbin 21 breaks, or when the yarn 20 is disconnected between the yarn supplying bobbin 21 and the yarn accumulating device 18, such as during replacement of the yarn supplying bobbin 21 or the like.
- the yarn joining device 13 is arranged at a slightly retracted position from the yarn path.
- the yarn joining device 13 restores the continuity of the yarn 20 by joining the two yarn ends that are guided thereto.
- the yarn joining device 13 can be a device that employs a fluid medium, such as compressed air, or a device that has a mechanical structure.
- the first catching section 14 is arranged at a position downstream of the yarn joining device 13 but near the yarn joining device 13. When the first catching section 14 is near the yarn path, it sucks and catches the yarn end from the yarn supplying bobbin 21 side that is blown off by the first blower 11 by generating the suction air current on the end portion side thereof.
- the detailed structure of the first catching section 14 is explained later.
- the tension applying device 15 applies a predetermined tension on the traveling yarn 20.
- the tension applying device 15 is a gate-type structure with movable comb teeth arranged with respect to fixed comb teeth.
- the tension applying device 15 applies a predetermined resistance to the yarn 20 when the yarn 20 travels between the two sets of comb teeth.
- the movable comb teeth are moved by, for example, a solenoid, so that the movable comb teeth and the fixed comb teeth are either in an engaged state or in a released state. With this configuration, the tension applied by the tension applying device 15 on the yarn 20 can be adjusted.
- the configuration of the tension applying device 15 is not particularly limited to the above. Alternatively, for example, a disc-type tension applying device can be used.
- the yarn monitoring device 17 detects a yarn defect, such as slub, contaminant, or the like, by monitoring with an appropriate sensor a thickness and the like of the yarn 20.
- the cutter 16 is arranged at a position upstream of the yarn monitoring device 17 but near the yarn monitoring device 17. The cutter 16 immediately cuts the yarn 20 when the yarn monitoring device 17 detects a yarn defect.
- the cutter 16 and the yarn monitoring device 17 are housed in one housing 19.
- the housing 19 is arranged at a position downstream of the tension applying device 15 but near the tension applying device 15.
- the yarn monitoring device 17 in the housing 19 can monitor the portion of the traveling yarn 20 near the position where the yarn 20 is held (guided) by the tension applying device 15. Accordingly, since practically no shaking of the yarn 20 occurs when the yarn 20 is monitored, a detection accuracy of a defect in the yarn 20 by the yarn monitoring device 17 can be further improved.
- the second blower 48 is an air sucker device arranged at a position upstream of the yarn accumulating device 18 but near the yarn accumulating device 18.
- the second blower 48 blows compressed air to generate an air current that blows off and conveys a yarn end on the yarn accumulating device 18 side to the second catching section 12.
- the second blower 48 includes a narrow cylindrical guide member through which the yarn 20 is passed. A blowout hole of the yarn 20 is formed on one end of the guide member.
- a yarn guide member 60 is arranged near the blowout hole of the second blower 48.
- An opening is formed on either end of the yarn guide member 60 in a longitudinal direction thereof.
- the yarn guide member 60 is arranged such that the opening on one end side thereof is positioned facing the blowout hole of the second blower 48, and the opening on the other end side is positioned facing the second catching section 12.
- a guiding path is formed inside the yarn guide member 60. The guiding path joins the openings at the two ends of the yarn guide member 60. Accordingly, it is possible to detour the yarn monitoring device 17, the tension applying device 15, the yarn joining device 13, and the like.
- the second blower 48, the yarn guide member 60, and the second catching section 12 together constitute an accumulating side yarn-end catching device 50.
- the second blower 48 catches the yarn 20 on the yarn accumulating device 18 side and blows off the yarn 20 so that the yarn 20 enters the guiding path in the yarn guide member 60. Then, the yarn 20 is pulled out along the guiding path and caught by the second catching section 12. Furthermore, a not shown slit is formed over the entire length of the yarn guide member 60 thereby allowing the yarn 20 to be pulled out from inside the yarn guide member 60 in a state in which the yarn 20 has been caught by the second catching section 12. In this manner, the yarn 20 on the yarn accumulating device 18 side is blown off by the second blower 48 and guided toward the yarn joining device 13.
- Each of the winder units 2 has a controlling section 25.
- the controlling section 25 includes not shown hardware such as a CPU (Central Processing Unit), a ROM (Read-only Memory), a RAM (Random Access Memory), and the like.
- the RAM stores therein software, such as a control program, and the like.
- the controlling section 25 controls each of the structural components of the winder unit 2 by the cooperative functioning of the hardware and the software.
- the controlling section 25 communicates with the machine-frame controlling device 3. This feature enables the machine-frame controlling device 3 to centrally manage the operations of the winder units 2 of the automatic winder 1.
- the first catching section 14 includes a base 70, a main body 72, a suction section 74, a driving section 76, and a yarn detecting section 78.
- the right side is defined as "front”
- the left side is defined as "rear”.
- the base 70 is, for example, formed by a plate-shaped metal member.
- the base 70 is, for example, an L-shaped member.
- the base 70 includes a supporting part 70a and a fixing part 70b.
- the supporting part 70a supports the suction section 74, the driving section 76, and the yarn detecting section 78.
- the fixing part 70b is fixed to a frame of the winder unit 2.
- the main body 72 is mounted on a bottom surface of the supporting part 70a of the base 70.
- the main body 72 reciprocatably (slidably) supports the suction section 74.
- insertion holes 72a and 72b are arranged on the main body 72 through which the suction section 74 is passed.
- the insertion holes 72a and 72b have a shape as same as that of the outer shape of the suction section 74 (circular).
- An inner diameter of the insertion holes 72a and 72b is substantially equal to the outer diameter of the suction section 74.
- the insertion hole 72a and the insertion hole 72b are arranged on the same axis.
- the main body 72 includes a hollow section 72c.
- the hollow section 72c forms a space where a part of the suction section 74 is positioned.
- the hollow section 72c is arranged between the insertion hole 72a and the insertion hole 72b.
- the main body 72 includes a connecting section 73 that is connected to a not shown negative pressure source.
- the connecting section 73 includes a flow path 73a that communicates with the hollow section 72c. This configuration enables the negative pressure source connected to the connecting section 73 to generate a negative pressure in the hollow section 72c of the main body 72.
- the hollow section 72c is an air-tight section.
- a not shown sealing member for example, an O - ring
- the suction section 74 is constituted by a cylindrical member.
- the suction section 74 reciprocates along an axial direction (longitudinal direction) thereof in the main body 72.
- a suction port 74a is arranged at one end (front end / tip end / first end) of the suction section 74 in the axial direction thereof.
- the suction port 74a brings the yarn 20 inside.
- the other end (rear end / second end) of the suction section 74 in the axial direction thereof is, for example, closed by a sealing section 74b.
- the suction section 74 is positioned in the insertion hole 72a, the hollow section 72c, and the insertion hole 72b in the main body 72.
- the suction section 74 has an opening 75 between the one end and the other end thereof.
- the opening 75 is, for example, arranged in a substantially central portion of the suction section 74 in the axial direction thereof.
- the opening 75 is formed by boring through the side surface of the suction section 74 so as to communicate with the inner section (flow path) of the suction section 74.
- a suction force in the suction section 74 changes according to the position of the opening 75. Specifically, as shown in FIG. 5B , when the suction section 74 is positioned at a first position at which the opening 75 and the hollow section 72c communicate, a first suction force is generated. On the other hand, as shown in FIG.
- a regulating member 74c is arranged in the suction section 74.
- the regulating member 74c regulates the movement of the suction section 74.
- the regulating member 74c is arranged on an outer circumference on the front side of the suction section 74.
- the regulating member 74c regulates the movement of the suction section 74 toward the rear side by coming in contact with the portion on the insertion hole 72a side of the main body 72.
- the driving section 76 causes the suction section 74 to move reciprocally (advance / retract)in the longitudinal direction of the suction section 74.
- the driving section 76 includes a motor 80 and a driving force transmitting mechanism 81.
- the motor 80 is a stepping motor.
- the motor 80 is fixed on an upper surface of the supporting part 70a of the base 70.
- the motor 80 has a rotation axis.
- the operation of the motor 80 is controlled by the controlling section 25. Specifically, the motor 80 is driven in accordance with a pulse signal output from the controlling section 25.
- the driving force transmitting mechanism 81 transmits the driving force of the motor 80 to the suction section 74.
- the driving force transmitting mechanism 81 transforms the rotation of the rotation axis of the motor 80 into a linear movement that causes the suction section 74 to move reciprocally.
- the driving force transmitting mechanism 81 includes a first movable member 82 and a second movable member 83. One end of the first movable member 82 is connected to the rotation axis, and the other end thereof is connected to a connecting member 84 that is arranged at the other end of the suction section 74.
- One end of the second movable member 83 is integrally connected to the first movable member 82, and on the other end, a detecting section that causes a sensor section 85 that is arranged on the supporting part 70a of the base 70 to detect the position of the driving force transmitting mechanism 81.
- the driving section 76 drives the motor 80 and causes the suction section 74 to reciprocate, thereby causing the suction section 74 to reciprocate to the first position, the second position and the third position in a linear movement.
- the yarn detecting section 78 detects the yarn 20.
- the yarn detecting section 78 is mounted on the main body 72. Specifically, the yarn detecting section 78 is mounted on the main body 72 by using a mounting member 79.
- the yarn detecting section 78 is arranged on the suction port 74a side of the suction section 74. Accordingly, the yarn detecting section 78 detects the yarn 20 that is sucked into the suction section 74.
- the first catching section 14 When the yarn 20 is cut by the cutter 16, the first catching section 14 having the above configuration sucks and catches the yarn end of the yarn 20 on the yarn supplying bobbin 21 side. Furthermore, the first catching section 14 can suck and remove fly-waste and the like adhering to the traveling yarn 20 by generating the suction air current in the suction port 74a of the suction section 74.
- the suction section 74 is positioned at the second position.
- the suction section 74 is positioned on the rear side (the suction port 74a is positioned at a position away from the yarn path).
- the opening 75 is closed by the insertion hole 72b. Accordingly, at this position, because the opening 75 and the hollow section 72c do not communicate with each other, the negative pressure does not act inside the suction section 74 and the suction force is not generated.
- the first blower 11 blows off the yarn 20 on the yarn supplying section 6 side (the yarn supplying bobbin 21 side) in the upward direction.
- the driving section 76 causes the suction section 74 to move to the first position.
- the suction section 74 is positioned on the front side (the suction port 74a is positioned at a position near the yarn path).
- the opening 75 communicates with the hollow section 72c and the flow path 73a. Accordingly, in the suction section 74, the negative pressure acts therein, and the first suction force is generated.
- the first suction force is set to a suction force capable of sucking a yarn end.
- the auxiliary blower 28 too, operates at almost the same time to assist the first blower 11 to blow off the yarn end.
- the yarn 20 blown off by the first blower 11 is sucked and caught by the first catching section 14.
- the driving section 76 causes the suction section 74 to move to the third position as shown in FIG. 6A .
- the third position the one end of the suction section 74 is near the yarn detecting section 78. Accordingly, the yarn 20 caught by the suction section 74 is detected by the yarn detecting section 78.
- the suction section 74 is moved to the first position once again, and the operation of catching the yarn 20 is performed again in the first catching section 14.
- a part of the opening 75 communicates with the hollow section 72c.
- the negative pressure acts therein and a second suction force that is weaker than the first suction force is generated.
- the driving section 76 causes the suction section 74 to move to the second position in the first catching section 14, as shown in FIG. 6B .
- the opening 75 is closed by the insertion hole 72b. Accordingly, in the suction section 74, because the opening 75 and the hollow section 72c do not communicate with each other, the negative pressure does not act therein, and the generation of suction force for the suction section 74 stops, thereby terminating the catching of the yarn end.
- the suction section 74 when the suction section 74 is at the first position that is near the yarn path of the yarn 20, the suction force is generated in the suction port 74a, and when the suction section 74 is at the second position that is retracted from the yarn path, the suction force is not generated in the suction port 74a.
- the suction force when the yarn end is not getting sucked, by moving the suction section 74 to the second position, the suction force cannot be generated in the suction port 74a.
- the negative pressure source consumes power when generating the suction air current in the suction port 74a of the suction section 74, and the power consumption is reduced when not generating the suction air current in the suction port 74a of the suction section 74. Consequently, the power consumption of the negative pressure source can be reduced in the first catching section 14 in which the suction air current is not generated when the yarn end is not getting caught. As a result, in the winder unit 2, an efficient operation can be achieved.
- the first catching section 14 includes the driving section 76 that causes the suction section 74 to reciprocate.
- the driving section 76 causes the suction section 74 to move to the first position at which the suction force is generated in the suction port 74a, and to the second position at which the suction force is not generated in the suction port 74a.
- the driving section 76 causes the suction section 74 to move to the second position when the yarn end is not getting sucked, making it possible to reduce the power consumption of the negative pressure source more reliably.
- the main body 72 includes the hollow section 72c that forms the space where apart of the suction section 74 is positioned and in which the negative pressure acts by the action of the negative pressure source.
- the suction port 74a is arranged at the one end in the axial direction thereof and the other end thereof is closed, and the suction section 74 includes the opening 75 that communicates with the inner section between the one end and the other end.
- the driving section 76 causes the suction section 74 to move to the first position at which the opening 75 and the hollow section 72c communicate with each other, and to the second position at which the opening 75 is closed by the main body 72.
- the opening 75 that communicates with the inner section of the suction section 74 is closed by moving the suction section 74 to the second position. Therefore, at the second position, the suction force is not generated in the suction section 74. Consequently, the power consumption of the negative pressure source can be reliably reduced.
- the driving section 76 can move the suction section 74 to a third position at which a suction force that is weaker than that generated at the first position is generated in the suction port 74a by providing communication between a part of the opening 75 and the hollow section 72c.
- the driving section 76 causes the suction section 74 to move to the third position when the yarn joining device 13 joins the yarn 20.
- the suction of the yarn end in the suction section 74 is maintained.
- the suction force applied by the suction section 74 on the yarn end is significant, a yarn breakage may occur. Therefore, the suction force can be reduced by moving the suction section 74 to the third position that provides the communication between a part of the opening 75 and the hollow section 72c. Consequently, the yarn breakage during yarn joining can be minimized.
- the winder unit 2 includes the cutter 16 that cuts the yarn 20, the yarn monitoring device 17 that monitors the state of the yarn 20, and the yarn accumulating device 18 that pulls the yarn 20 from the yarn supplying section 6 and accumulates the pulled yarn 20.
- the yarn joining device 13 is arranged between the yarn supplying section 6 and the yarn accumulating device 18, and joins the yarn 20 that is disconnected between the yarn supplying section 6 and the yarn accumulating device 18.
- the first catching section 14, the cutter 16, the yarn monitoring device 17, and the yarn accumulating device 18 are arranged in this order downstream of the yarn joining device 13. With such a configuration, when the yarn 20 is disconnected by the cutter 16 upon detection of a yarn defect by the yarn monitoring device 17, the first catching section 14 can reliably catch the disconnected yarn 20, and the caught yarn can be guided to the yarn joining device 13.
- the first catching section 14 includes the yarn detecting section 78 that detects the yarn end sucked into the suction port 74a. With this configuration, whether or not the yarn end is sucked into the suction section 74 can be detected.
- a first catching section 90 includes a base 92, a main body 94, a suction section 96, a shutter 98, and a yarn detecting section 100.
- the first catching section 90 includes a not shown driving section.
- the driving section has the same configuration as that explained in the first embodiment, and causes the suction section 96 to reciprocate (advance / retract).
- An air type cylinder can be adopted as the driving section.
- the main body 94 is mounted on a bottom surface of the base 92.
- the main body 94 reciprocatably (slidably) supports the suction section 96.
- the suction section 96 is a cylindrical member.
- the suction section 96 reciprocates along an axial direction (longitudinal direction) thereof in the main body 94.
- a suction port 96a is arranged at one end of the suction section 96 in the axial direction thereof.
- the suction port 96a brings the yarn 20 inside.
- a negative pressure source is connected to the other end of the suction section 96 in the axial direction thereof.
- the driving section moves, as shown in FIG. 7 , the suction section 96 to a first position at which the suction port 96a is open when the shutter 98 opens, and as shown in FIG. 8 , to a second position at which the suction port 96a is closed by the shutter 98.
- a suction force is generated when the suction section 96 is positioned at the first position.
- the suction force is not generated when the suction section 96 is positioned at the second position.
- the shutter 98 opens or closes the suction port 96a in accordance with the movement of the suction section 96.
- the shutter 98 is arranged on the one end side of the suction section 96.
- the shutter 98 is fixed to the base 92 with a mounting member 99.
- the shutter 98 is arranged so as to be swingable on the mounting member 99.
- the shutter 98 swings in accordance with the reciprocating movement of the suction section 96.
- the shutter 98 is biased in a counter-clockwise direction by a not shown biasing member. Upon being pressed by the suction section 96, the shutter 98 swings in a clockwise direction. Moreover, by functioning in cooperation with the suction section 96, the shutter 98 clamps the yarn 20.
- the yarn detecting section 100 detects the yarn 20.
- the yarn detecting section 100 is mounted on the main body 94. Specifically, the yarn detecting section 100 is mounted on the main body 94 with the mounting member 99.
- the yarn detecting section 100 is arranged on the suction port 96a side of the suction section 96. Accordingly, the yarn detecting section 100 detects the yarn 20 sucked in the suction section 96.
- the suction section 96 is positioned at the second position.
- the suction section 96 is positioned on the rear side (the suction port 96a is positioned at a position away from the yarn path).
- the suction port 96a of the suction section 96 is closed by the shutter 98. Accordingly, the suction force is not generated in the suction port 96a of the suction section 96.
- the first blower 11 blows off the yarn 20 on the yarn supplying section 6 side (the yarn supplying bobbin 21 side) in the upward direction.
- the suction section 96 is moved by the driving section to the first position in the first catching section 14, as shown in FIG. 7 .
- the suction section 96 is positioned on the front side (the suction port 96a is positioned at a position near the yarn path).
- the shutter 98 is open upon being pressed away by the suction section 96. Accordingly, in the suction section 96, the negative pressure acts therein and the suction force is generated.
- the suction section 96 In the first catching section 90, the suction section 96 catches the yarn end of the yarn 20 fed by the first blower 11, the driving section causes the suction section 96 to move to the second position. At the second position, the one end of the suction section 96 is positioned near the yarn detecting section 100. Accordingly, the yarn 20 caught by the suction section 96 is detected by the yarn detecting section 100. However, when the yarn 20 is not detected by the yarn detecting section 100, the suction section 96 is again moved to the first position, and the operation of catching the yarn 20 is performed again in the first catching section 90. At the second position, the shutter 98 closes the suction port 96a of the suction section 96.
- the yarn 20 caught by the suction section 96 is clamped.
- the yarn joining device 13 By operating the yarn joining device 13 in the yarn clamped state, the yarn 20 on the yarn supplying bobbin 21 side caught by the first catching section 90 and the yarn 20 on the yarn accumulating device 18 side caught by the second catching section 12 are joined.
- the driving section causes the suction section 96 to move to the front in the first catching section 90. Accordingly, the clamping of the yarn 20 (catching of the yarn 20) by the suction section 96 and the shutter 98 is released.
- the suction force is generated in the suction port 96a, and when the suction section 96 is at the second position that is retracted from the yarn path, the suction force is not generated in the suction port 96a.
- the negative pressure source consumes power when generating the suction air current in the suction port 96a of the suction section 96, and reduces the power consumption when not generating the suction air current in the suction port 96a of the suction section 96. Consequently, the power consumption of the negative pressure source can be reduced in the first catching section 90 in which the suction air current is not generated when the yarn end is not getting caught. As a result, in the winder unit 2, an efficient operation can be achieved.
- the driving section 76 includes the motor 80 and the driving force transmitting mechanism 81 is cited as an example.
- the driving section can have any configuration as long as it reciprocally moves the suction section 74 or 96.
- a cylinder and the like can be used as the driving section.
- the configuration in which the yarn accumulating device 18 is omitted and the yarn 20 from the yarn supplying section 6 is directly wound by the package forming section 8, and when the yarn 20 is disconnected, the yarn 20 is caught from the package forming section 8 and guided to the yarn joining device 13 can be applied.
- the yarn supplying section 6 is not limited to the one that transports the yarn supplying bobbin 21 by mounting on the tray. That is, the yarn supplying section 6 can be a magazine-type bobbin feeder. In this configuration, when the bobbin feeder feeds a new yarn supplying bobbin 21 into the yarn supplying section 6, the bobbin feeder can pull the yarn end from the yarn supplying bobbin 21 and convey the yarn end to the first blower 11.
- the auxiliary blower 28 can be omitted in this case.
- traversing of the yarn 20 is performed by the traversing drum 24 in the package forming section 8.
- the package forming section 8 is not limited to such a configuration.
- An arm-type or a belt-type traverse mechanism can be used for traversing the yarn 20.
- a torsion coil spring (not shown) is used, a variety of elastic members can be used.
- the yarn 20 can be wound into a cheese-shaped package 30 or a cone-shaped package 30.
- the material and shape of various components explained above are not limited to those mentioned above, and it is possible to adopt various materials and shapes.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
- The present invention relates to a yarn winding device.
- A yarn catching section mounted on a yarn winding device that catches a yarn when a yarn breaks and the like is known in the art. For example, the yarn winding device equipped with a yarn-end blower that feeds a yarn end of a yarn supplying bobbin to a winding section side by the action of an air current, and a yarn catching section that catches the yarn end fed by the yarn-end blower is disclosed in
Japanese Patent Application Laid-open No. 2012-20852 - In the above conventional yarn catching section, a suction force is constantly generated when the yarn winding device is operating. In other words, in the conventional yarn catching section, the suction force is generated even when yarn catching is not required. Because a negative pressure source that generates the suction force constantly consumes power, the conventional yarn winding devices are not efficient.
- It is an object of the present invention to provide an efficient yarn winding device.
- According to one aspect of the present invention, a yarn winding device includes a yarn supplying section that supports a yarn supplying bobbin on which a yarn is wound; a winding section that winds the yarn pulled from the yarn supplying bobbin supported in the yarn supplying section; a yarn-end blower that blows off a yarn end from the yarn supplying bobbin to the winding section side by blowing an air current; and a yarn catching section that catches the yarn end blown off by the yarn-end blower. The yarn catching section includes a main body and a suction section that comprises a cylindrical member on which a suction port that sucks the yarn is formed. The suction section is arranged so as to be capable of performing a reciprocating linear movement in an axial direction of the cylindrical member in the main body, in which a suction force is generated in the suction port when the suction section is at a first position that is near a yarn path of the yarn that moves from the yarn supplying section to the winding section, and the suction force is not generated in the suction port when the suction section is at a second position that is retracted from the yarn path.
- 1 In the yarn winding device, when the suction section of the yarn catching section is at the first position that is near the yarn path of the yarn that moves from the yarn supplying section to the winding section, the suction force is generated in the suction port, and when the suction section of the yarn catching section is at the second position that is retracted from the yarn path, the suction force is not generated in the suction port. In this configuration, when the yarn end is not getting sucked, the suction section is moved to the second position so that the suction force cannot be generated in the suction port. Consequently, power consumption by the negative pressure source when the yarn end is not getting caught can be reduced. As a result, an efficient operation can be achieved in the yarn winding device.
- In the above yarn winding device, the yarn catching section includes a driving section that causes the suction section to perform the reciprocating movement, wherein the driving section causes the suction section to move to the first position and to the second position. In this configuration, the driving section causes the suction section to move to the second position when the yarn end is not getting sucked so that power consumption by the negative pressure source can be reduced more reliably.
- In the above yarn winding device, the main body includes a hollow section that forms a space where the suction section is positioned in a partitioned manner, and in which a negative pressure acts by an action of a negative pressure source. In the suction section, the suction port is arranged on a first end thereof in an axial direction and a second end thereof is closed, and an opening that communicates with an inner section is arranged between the first end and the second end. The driving section causes the suction section to move to the first position that provides communication between the opening and the hollow section, and to the second position whereby the opening is closed by the main body. In this configuration, the suction section is moved to the second position so that the opening that communicates with the inner section of the suction section is closed. Therefore, in the second position, the suction force is not generated in the suction section. Consequently, the power consumption by the negative pressure source can be reliably reduced.
- The above yarn winding device further includes a yarn joining device that joins the yarn of the yarn supplying bobbin caught by the yarn catching section and the yarn wound on the winding device. The driving section, in addition to the first position and the second position, moves the suction section to a third position at which a weaker suction force than that generated at the first position is generated in the suction port by providing communication between a part of the opening and the hollow section, and moves the suction section to the third position when the yarn joining device is joining the yarn. When the yarn is being joined by the yarn joining device, the suction of the yarn end in the suction section is maintained. In such a case, if the suction force applied by the suction section on the yarn end is significant, a yarn breakage may occur. Therefore, the suction force can be weakened by moving the suction section to the third position that provides the communication between the part of the opening and the hollow section. Consequently, the yarn breakage during the yarn joining can be minimized.
- The above yarn winding device further includes a cutter that cuts the yarn, and a yarn monitoring device that monitors a state of the yarn. The yarn joining device is arranged between the yarn supplying section and the winding section, and joins the yarn disconnected between the yarn supplying section and the winding section, and the yarn catching section, the cutter and the yarn monitoring device are arranged in this sequence order downstream of the yarn joining device. According to such a configuration, when the yarn is disconnected by the cutter upon detection of, for example, a yarn defect by the yarn monitoring device, the yarn catching section can reliably catch the disconnected yarn, and the caught yarn can be guided to the yarn joining device.
- The above yarn winding device further includes a cutter that cuts the yarn, a yarn monitoring device that monitors a state of the yarn, and a yarn accumulating device that pulls and accumulates the yarn from the yarn supplying section. The yarn joining device is arranged between the yarn supplying section and the yarn accumulating device, and joins the yarn disconnected between the yarn supplying section and the yarn accumulating device, and the yarn catching section, the cutter, the yarn monitoring device, and the yarn accumulating device are arranged in this order downstream of the yarn joining device. According to such a configuration, when the yarn is disconnected by the cutter upon detection of, for example, a yarn defect by the yarn monitoring device, the yarn catching section can reliably catch the disconnected yarn, and the caught yarn can be guided to the yarn joining device.
- In the above yarn winding device, the yarn catching section includes a detecting section that detects the yarn end sucked in the suction port. With this configuration, whether the yarn end is sucked into the suction section can be detected.
- In the above yarn winding device, the yarn catching section includes a shutter that opens or closes the suction port in accordance with a movement of the suction section. In this configuration, the suction force changes depending on the position at which the suction section is positioned. Consequently, by moving the suction section to the position at which the suction port is closed by the shutter when the yarn is not getting sucked, the power consumption by the negative pressure source can be reduced more reliably.
- In the above yarn winding device, the yarn catching section includes a driving section that causes the suction section to perform the reciprocating movement, and the driving section moves the suction section to the first position where the shutter opens to open the suction port, and to the second position where the suction port is closed by the shutter. In this configuration, when the suction section is moved to the second position, the suction port is closed by the shutter. Therefore, at the second position, the suction force is not generated in the suction section. Consequently, the power consumption by the negative pressure source can be reliably reduced.
- According to the present invention, an efficient operation can be achieved.
- In the above explanation, the meaning of "a plurality of" also includes "a predetermined number of".
- Although the invention has been explained with respect to specific embodiments for a complete and clear disclosure, the appended claims are not to be thus limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art that fairly fall within the scope of the claims.
- The above and other objects, features, advantages and technical and industrial significance of this invention will be better understood by reading the following detailed description of presently preferred embodiments of the invention, when considered in connection with the accompanying drawings.
-
-
FIG. 1 is a schematic front view of an overall configuration of an automatic winder according to one embodiment of the present invention. -
FIG. 2 is a schematic side view of a winder unit according to one embodiment of the present invention. -
FIG. 3 is a perspective view of a first catching section according to the present invention. -
FIG. 4 is another perspective view of the first catching section. -
FIGS. 5A and 5B are views showing operation of the first catching section. -
FIGS. 6A and 6B are views showing operation of the first catching section. -
FIG. 7 is a perspective view of a first catching section according to another embodiment of the present invention. -
FIG. 8 is another perspective view of the first catching section according shown inFIG. 7 . - Exemplary embodiments of the present invention are explained in detail below with reference to the accompanying drawings. Identical elements or corresponding elements are indicated by the same reference symbols in the drawings and redundant explanation thereof is omitted. The terms "upstream" and "downstream" refer to upstream and downstream in a traveling direction of a yarn during spinning, respectively.
- As shown in
FIG. 1 , an automatic winder 1 includes a plurality of winder units (yarn winding devices) 2 that are arranged side by side, a machine-frame controlling device 3, a yarn-supply bobbin feeder 4, adoffing device 5, and a not shown blower box. - The machine-frame controlling device 3 communicates with the
winder units 2. The operator of the automatic winder 1 can centrally manage thewinder units 2 by performing appropriate operations on the machine-frame controlling device 3. The machine-frame controlling device 3 controls operations of the yarn-supply bobbin feeder 4 and thedoffing device 5. - The yarn-supply bobbin feeder 4 sets one
yarn supplying bobbin 21 on each of conveyingtrays 26 by a not shown mechanism and feeds theyarn supplying bobbin 21 set on the conveyingtray 26 to each of thewinder units 2. - The
doffing device 5 moves to the position of awinder unit 2 in which apackage 30 has been fully wound (a state where a prescribed amount of ayarn 20 has been wound) in thewinder unit 2, and removes the fully woundpackage 30. Thedoffing device 5 sets an empty (a state where no yarn is wound) windingbobbin 22 in the place of thepackage 30 that has been removed from thewinder unit 2. - A configuration of the
winder unit 2 is explained below. As shown inFIG. 2 , thewinder unit 2 includes ayarn supplying section 6, ayarn accumulating device 18, and apackage forming section 8. In thewinder unit 2, theyarn 20 from theyarn supplying bobbin 21 of theyarn supplying section 6 is unwound, the unwoundyarn 20 is temporarily accumulated in theyarn accumulating device 18, and thereafter the accumulatedyarn 20 is unwound and wound onto the windingbobbin 22 to form thepackage 30. - The
yarn supplying section 6 supports theyarn supplying bobbin 21 set on the conveyingtray 26 at a predetermined position, and unwinds theyarn 20 from theyarn supplying bobbin 21 to supply theyarn 20. Theyarn supplying section 6 discharges the emptyyarn supplying bobbin 21 from which all theyarn 20 has been unwound and receives anotheryarn supplying bobbin 21 from the yarn-supply bobbin feeder 4. - The
yarn accumulating device 18 is arranged between theyarn supplying section 6 and thepackage forming section 8. Theyarn accumulating device 18 is arranged at a position upstream of thepackage forming section 8 in a traveling direction of theyarn 20. Theyarn accumulating device 18 temporarily accumulates theyarn 20 supplied from theyarn supplying section 6. Theyarn accumulating device 18 is arranged such that theyarn 20 accumulated therein can be pulled by thepackage forming section 8. Theyarn accumulating device 18 includes ayarn accumulating roller 32 on which theyarn 20 is wound, and aroller driving motor 33 that rotationally drives theyarn accumulating roller 32. Theroller driving motor 33 causes theyarn accumulating roller 32 to rotate in a winding direction so that theyarn 20 from theyarn supplying section 6 is wound. Moreover, theroller driving motor 33 can also cause theyarn accumulating roller 32 to rotate in an opposite direction of the winding direction. - The
package forming section 8 includes acradle 23 on which the windingbobbin 22 can be mounted and a traversingdrum 24 that drives the windingbobbin 22 while traversing theyarn 20. Thepackage forming section 8 comprises a winding section. Thecradle 23 rotatably supports the winding bobbin 22 (or the package 30). Thecradle 23 is pivoted so that an outer peripheral surface of thepackage 30 mounted thereon is in contact with or separated from an outer peripheral surface of the traversingdrum 24. - The traversing
drum 24 is rotationally driven by a not shown driving source (an electric motor or the like). The rotation of the traversingdrum 24 that is in contact with the outer peripheral surface of the windingbobbin 22 or thepackage 30 rotationally drives the windingbobbin 22. With this action, theyarn 20 accumulated in theyarn accumulating device 18 is unwound and pulled via a pullingguide 37, and wound on the windingbobbin 22. The traversingdrum 24 has a not shown traversing groove formed on the outer peripheral surface thereof. The traversing groove enables theyarn 20 to be traversed by a predetermined width. With this configuration, theyarn 20 can be wound on the windingbobbin 22 while being traversed and thepackage 30 of a predetermined length and shape can be formed. - The
winder unit 2 includes various devices on a yarn traveling path from theyarn supplying section 6 via theyarn accumulating device 18 to thepackage forming section 8. Specifically, anunwinding assisting device 10, a first blower (a yarn-end blower) 11, asecond catching section 12, ayarn joining device 13, a first catching section (a yarn catching section) 14, atension applying device 15, acutter 16, ayarn monitoring device 17, and asecond blower 48 are arranged sequentially on the yarn path of theyarn 20 in the direction from theyarn supplying section 6 arranged upstream to theyarn accumulating device 18 arranged downstream. - A balloon is formed above the
yarn supplying bobbin 21 by the swayingyarn 20 that is being unwound from theyarn supplying bobbin 21. The unwinding assistingdevice 10 assists in the unwinding of theyarn 20 by appropriately controlling a size of the balloon by bringing amovable member 27 into contact with the balloon. - The
first blower 11 is an air sucker device arranged at a position downstream of theunwinding assisting device 10 but near the unwinding assistingdevice 10. Thefirst blower 11 blows compressed air to form an air current that blows off theyarn 20 up to the first catchingsection 14. Accordingly, in the event of a yarn breakage, for example, a yarn end on theyarn supplying bobbin 21 side can be blown off toward theyarn joining device 13 by thefirst blower 11. - Because the
yarn 20 from theyarn supplying bobbin 21 that has just been fed to theyarn supplying section 6 is not drawn out adequately enough, the yarn end is difficult to be blown off by thefirst blower 11 toward theyarn joining device 13. To address this problem, anauxiliary blower 28 is arranged in theyarn supplying section 6 of thewinder unit 2. - The
auxiliary blower 28 blows compressed air into the internally hollow conveyingtray 26 and theyarn supplying bobbin 21 and generates an air current at an end portion of theyarn supplying bobbin 21 to blow off theyarn 20 from theyarn supplying bobbin 21 toward thefirst blower 11. Theauxiliary blower 28 and thefirst blower 11 operate in conjunction with each other to reliably convey the yarn end from theyarn supplying bobbin 21 that has just been set in theyarn supplying section 6 toward theyarn joining device 13. - The
second catching section 12 is arranged at a position upstream of theyarn joining device 13 but near theyarn joining device 13. Thesecond catching section 12 is connected to a not shown suction air current generating source and generates a suction air current during yarn joining. Thesecond catching section 12 sucks and catches theyarn 20 on theyarn accumulating device 18 side by the action of the suction air current. - The
yarn joining device 13 joins the disconnectedyarn 20. Theyarn joining device 13 joins theyarn 20 from theyarn supplying bobbin 21 side and theyarn 20 from theyarn accumulating device 18 side when theyarn 20 is cut by thecutter 16 upon detection of a yarn defect by theyarn monitoring device 17, when theyarn 20 being unwound from theyarn supplying bobbin 21 breaks, or when theyarn 20 is disconnected between theyarn supplying bobbin 21 and theyarn accumulating device 18, such as during replacement of theyarn supplying bobbin 21 or the like. Theyarn joining device 13 is arranged at a slightly retracted position from the yarn path. Theyarn joining device 13 restores the continuity of theyarn 20 by joining the two yarn ends that are guided thereto. Theyarn joining device 13 can be a device that employs a fluid medium, such as compressed air, or a device that has a mechanical structure. - The
first catching section 14 is arranged at a position downstream of theyarn joining device 13 but near theyarn joining device 13. When the first catchingsection 14 is near the yarn path, it sucks and catches the yarn end from theyarn supplying bobbin 21 side that is blown off by thefirst blower 11 by generating the suction air current on the end portion side thereof. The detailed structure of the first catchingsection 14 is explained later. - The
tension applying device 15 applies a predetermined tension on the travelingyarn 20. Thetension applying device 15 is a gate-type structure with movable comb teeth arranged with respect to fixed comb teeth. Thetension applying device 15 applies a predetermined resistance to theyarn 20 when theyarn 20 travels between the two sets of comb teeth. The movable comb teeth are moved by, for example, a solenoid, so that the movable comb teeth and the fixed comb teeth are either in an engaged state or in a released state. With this configuration, the tension applied by thetension applying device 15 on theyarn 20 can be adjusted. The configuration of thetension applying device 15 is not particularly limited to the above. Alternatively, for example, a disc-type tension applying device can be used. - The
yarn monitoring device 17 detects a yarn defect, such as slub, contaminant, or the like, by monitoring with an appropriate sensor a thickness and the like of theyarn 20. Thecutter 16 is arranged at a position upstream of theyarn monitoring device 17 but near theyarn monitoring device 17. Thecutter 16 immediately cuts theyarn 20 when theyarn monitoring device 17 detects a yarn defect. - The
cutter 16 and theyarn monitoring device 17 are housed in onehousing 19. Thehousing 19 is arranged at a position downstream of thetension applying device 15 but near thetension applying device 15. With this configuration, theyarn monitoring device 17 in thehousing 19 can monitor the portion of the travelingyarn 20 near the position where theyarn 20 is held (guided) by thetension applying device 15. Accordingly, since practically no shaking of theyarn 20 occurs when theyarn 20 is monitored, a detection accuracy of a defect in theyarn 20 by theyarn monitoring device 17 can be further improved. - The
second blower 48 is an air sucker device arranged at a position upstream of theyarn accumulating device 18 but near theyarn accumulating device 18. Thesecond blower 48 blows compressed air to generate an air current that blows off and conveys a yarn end on theyarn accumulating device 18 side to the second catchingsection 12. Specifically, thesecond blower 48 includes a narrow cylindrical guide member through which theyarn 20 is passed. A blowout hole of theyarn 20 is formed on one end of the guide member. - A
yarn guide member 60 is arranged near the blowout hole of thesecond blower 48. An opening is formed on either end of theyarn guide member 60 in a longitudinal direction thereof. Theyarn guide member 60 is arranged such that the opening on one end side thereof is positioned facing the blowout hole of thesecond blower 48, and the opening on the other end side is positioned facing the second catchingsection 12. A guiding path is formed inside theyarn guide member 60. The guiding path joins the openings at the two ends of theyarn guide member 60. Accordingly, it is possible to detour theyarn monitoring device 17, thetension applying device 15, theyarn joining device 13, and the like. Thesecond blower 48, theyarn guide member 60, and the second catchingsection 12 together constitute an accumulating side yarn-end catching device 50. - When the
yarn 20 is disconnected between theyarn supplying bobbin 21 and theyarn accumulating device 18, thesecond blower 48 catches theyarn 20 on theyarn accumulating device 18 side and blows off theyarn 20 so that theyarn 20 enters the guiding path in theyarn guide member 60. Then, theyarn 20 is pulled out along the guiding path and caught by the second catchingsection 12. Furthermore, a not shown slit is formed over the entire length of theyarn guide member 60 thereby allowing theyarn 20 to be pulled out from inside theyarn guide member 60 in a state in which theyarn 20 has been caught by the second catchingsection 12. In this manner, theyarn 20 on theyarn accumulating device 18 side is blown off by thesecond blower 48 and guided toward theyarn joining device 13. - Each of the
winder units 2 has a controllingsection 25. The controllingsection 25 includes not shown hardware such as a CPU (Central Processing Unit), a ROM (Read-only Memory), a RAM (Random Access Memory), and the like. The RAM stores therein software, such as a control program, and the like. The controllingsection 25 controls each of the structural components of thewinder unit 2 by the cooperative functioning of the hardware and the software. The controllingsection 25 communicates with the machine-frame controlling device 3. This feature enables the machine-frame controlling device 3 to centrally manage the operations of thewinder units 2 of the automatic winder 1. - Next, the first catching
section 14 is explained in detail. As shown inFIGS. 3 and4 , the first catchingsection 14 includes abase 70, amain body 72, asuction section 74, a drivingsection 76, and ayarn detecting section 78. In the following explanation, inFIGS. 5A, 5B ,6A, and 6B , the right side is defined as "front", and the left side is defined as "rear". - The
base 70 is, for example, formed by a plate-shaped metal member. Thebase 70 is, for example, an L-shaped member. Thebase 70 includes a supportingpart 70a and a fixingpart 70b. The supportingpart 70a supports thesuction section 74, the drivingsection 76, and theyarn detecting section 78. The fixingpart 70b is fixed to a frame of thewinder unit 2. - The
main body 72 is mounted on a bottom surface of the supportingpart 70a of thebase 70. Themain body 72 reciprocatably (slidably) supports thesuction section 74. As shown inFIGS. 5A, 5B ,6A, and 6B ,insertion holes main body 72 through which thesuction section 74 is passed. The insertion holes 72a and 72b have a shape as same as that of the outer shape of the suction section 74 (circular). An inner diameter of theinsertion holes suction section 74. Theinsertion hole 72a and theinsertion hole 72b are arranged on the same axis. - The
main body 72 includes ahollow section 72c. Thehollow section 72c forms a space where a part of thesuction section 74 is positioned. Thehollow section 72c is arranged between theinsertion hole 72a and theinsertion hole 72b. Moreover, themain body 72 includes a connectingsection 73 that is connected to a not shown negative pressure source. The connectingsection 73 includes aflow path 73a that communicates with thehollow section 72c. This configuration enables the negative pressure source connected to the connectingsection 73 to generate a negative pressure in thehollow section 72c of themain body 72. Thehollow section 72c is an air-tight section. Specifically, a not shown sealing member (for example, an O - ring) is arranged on theinsertion holes suction section 74 and theinsertion holes hollow section 72c. - The
suction section 74 is constituted by a cylindrical member. Thesuction section 74 reciprocates along an axial direction (longitudinal direction) thereof in themain body 72. Asuction port 74a is arranged at one end (front end / tip end / first end) of thesuction section 74 in the axial direction thereof. Thesuction port 74a brings theyarn 20 inside. The other end (rear end / second end) of thesuction section 74 in the axial direction thereof is, for example, closed by asealing section 74b. Thesuction section 74 is positioned in theinsertion hole 72a, thehollow section 72c, and theinsertion hole 72b in themain body 72. - The
suction section 74 has anopening 75 between the one end and the other end thereof. Theopening 75 is, for example, arranged in a substantially central portion of thesuction section 74 in the axial direction thereof. Theopening 75 is formed by boring through the side surface of thesuction section 74 so as to communicate with the inner section (flow path) of thesuction section 74. A suction force in thesuction section 74 changes according to the position of theopening 75. Specifically, as shown inFIG. 5B , when thesuction section 74 is positioned at a first position at which theopening 75 and thehollow section 72c communicate, a first suction force is generated. On the other hand, as shown inFIG. 5A , when thesuction section 74 is positioned at a second position at which theopening 75 is closed by theinsertion hole 72b of themain body 72, the suction force is not generated. As shown inFIG. 6A , when thesuction section 74 is positioned at a third position at which a part of theopening 75 and thehollow section 72c communicate with each other, a second suction force that is weaker than the first suction force is generated. In detail, because the area of theopening 75 becomes smaller at the third position in comparison with the area of theopening 75 at the first position, the suction force inside thesuction section 74 becomes weak. - A regulating
member 74c is arranged in thesuction section 74. The regulatingmember 74c regulates the movement of thesuction section 74. The regulatingmember 74c is arranged on an outer circumference on the front side of thesuction section 74. The regulatingmember 74c regulates the movement of thesuction section 74 toward the rear side by coming in contact with the portion on theinsertion hole 72a side of themain body 72. - The driving
section 76 causes thesuction section 74 to move reciprocally (advance / retract)in the longitudinal direction of thesuction section 74. The drivingsection 76 includes amotor 80 and a drivingforce transmitting mechanism 81. In the present embodiment, themotor 80 is a stepping motor. Themotor 80 is fixed on an upper surface of the supportingpart 70a of thebase 70. Themotor 80 has a rotation axis. The operation of themotor 80 is controlled by the controllingsection 25. Specifically, themotor 80 is driven in accordance with a pulse signal output from the controllingsection 25. - The driving
force transmitting mechanism 81 transmits the driving force of themotor 80 to thesuction section 74. The drivingforce transmitting mechanism 81 transforms the rotation of the rotation axis of themotor 80 into a linear movement that causes thesuction section 74 to move reciprocally. The drivingforce transmitting mechanism 81 includes a firstmovable member 82 and a secondmovable member 83. One end of the firstmovable member 82 is connected to the rotation axis, and the other end thereof is connected to a connectingmember 84 that is arranged at the other end of thesuction section 74. One end of the secondmovable member 83 is integrally connected to the firstmovable member 82, and on the other end, a detecting section that causes asensor section 85 that is arranged on the supportingpart 70a of the base 70 to detect the position of the drivingforce transmitting mechanism 81. The drivingsection 76 drives themotor 80 and causes thesuction section 74 to reciprocate, thereby causing thesuction section 74 to reciprocate to the first position, the second position and the third position in a linear movement. - The
yarn detecting section 78 detects theyarn 20. Theyarn detecting section 78 is mounted on themain body 72. Specifically, theyarn detecting section 78 is mounted on themain body 72 by using a mountingmember 79. Theyarn detecting section 78 is arranged on thesuction port 74a side of thesuction section 74. Accordingly, theyarn detecting section 78 detects theyarn 20 that is sucked into thesuction section 74. - When the
yarn 20 is cut by thecutter 16, the first catchingsection 14 having the above configuration sucks and catches the yarn end of theyarn 20 on theyarn supplying bobbin 21 side. Furthermore, the first catchingsection 14 can suck and remove fly-waste and the like adhering to the travelingyarn 20 by generating the suction air current in thesuction port 74a of thesuction section 74. - The operation of the first catching
section 14 is explained next. As shown inFIG. 5A , when the first catchingsection 14 is in standby state, thesuction section 74 is positioned at the second position. At the second position, thesuction section 74 is positioned on the rear side (thesuction port 74a is positioned at a position away from the yarn path). At this position, theopening 75 is closed by theinsertion hole 72b. Accordingly, at this position, because theopening 75 and thehollow section 72c do not communicate with each other, the negative pressure does not act inside thesuction section 74 and the suction force is not generated. - For example, when a yarn defect is detected by the
yarn monitoring device 17 and theyarn 20 is cut by thecutter 16, thefirst blower 11 blows off theyarn 20 on theyarn supplying section 6 side (theyarn supplying bobbin 21 side) in the upward direction. When theyarn 20 is cut, in the first catchingsection 14, as shown inFIG. 5B , the drivingsection 76 causes thesuction section 74 to move to the first position. At the first position, thesuction section 74 is positioned on the front side (thesuction port 74a is positioned at a position near the yarn path). At this position, theopening 75 communicates with thehollow section 72c and theflow path 73a. Accordingly, in thesuction section 74, the negative pressure acts therein, and the first suction force is generated. The first suction force is set to a suction force capable of sucking a yarn end. When a newyarn supplying bobbin 21 has been fed in theyarn supplying section 6, theauxiliary blower 28, too, operates at almost the same time to assist thefirst blower 11 to blow off the yarn end. Theyarn 20 blown off by thefirst blower 11 is sucked and caught by the first catchingsection 14. - In the first catching
section 14, when thesuction section 74 catches the yarn end of theyarn 20 fed by thefirst blower 11, the drivingsection 76 causes thesuction section 74 to move to the third position as shown inFIG. 6A . At the third position, the one end of thesuction section 74 is near theyarn detecting section 78. Accordingly, theyarn 20 caught by thesuction section 74 is detected by theyarn detecting section 78. However, when theyarn 20 is not detected by theyarn detecting section 78, thesuction section 74 is moved to the first position once again, and the operation of catching theyarn 20 is performed again in the first catchingsection 14. When thesuction section 74 is at the third position, a part of theopening 75 communicates with thehollow section 72c. Accordingly, in thesuction section 74, the negative pressure acts therein and a second suction force that is weaker than the first suction force is generated. By operating theyarn joining device 13 in this state, theyarn 20 on theyarn supplying bobbin 21 side caught by the first catchingsection 14 and theyarn 20 on theyarn accumulating device 18 side caught by the second catchingsection 12 are joined. - When the yarn joining operation by the
yarn joining device 13 is completed, the drivingsection 76 causes thesuction section 74 to move to the second position in the first catchingsection 14, as shown inFIG. 6B . At this position, theopening 75 is closed by theinsertion hole 72b. Accordingly, in thesuction section 74, because theopening 75 and thehollow section 72c do not communicate with each other, the negative pressure does not act therein, and the generation of suction force for thesuction section 74 stops, thereby terminating the catching of the yarn end. - As explained above, in the first catching
section 14 of thewinder unit 2 according to the present embodiment, when thesuction section 74 is at the first position that is near the yarn path of theyarn 20, the suction force is generated in thesuction port 74a, and when thesuction section 74 is at the second position that is retracted from the yarn path, the suction force is not generated in thesuction port 74a. In this configuration, when the yarn end is not getting sucked, by moving thesuction section 74 to the second position, the suction force cannot be generated in thesuction port 74a. The negative pressure source consumes power when generating the suction air current in thesuction port 74a of thesuction section 74, and the power consumption is reduced when not generating the suction air current in thesuction port 74a of thesuction section 74. Consequently, the power consumption of the negative pressure source can be reduced in the first catchingsection 14 in which the suction air current is not generated when the yarn end is not getting caught. As a result, in thewinder unit 2, an efficient operation can be achieved. - In the present embodiment, the first catching
section 14 includes the drivingsection 76 that causes thesuction section 74 to reciprocate. The drivingsection 76 causes thesuction section 74 to move to the first position at which the suction force is generated in thesuction port 74a, and to the second position at which the suction force is not generated in thesuction port 74a. In this configuration, the drivingsection 76 causes thesuction section 74 to move to the second position when the yarn end is not getting sucked, making it possible to reduce the power consumption of the negative pressure source more reliably. - In the present embodiment, the
main body 72 includes thehollow section 72c that forms the space where apart of thesuction section 74 is positioned and in which the negative pressure acts by the action of the negative pressure source. In thesuction section 74, thesuction port 74a is arranged at the one end in the axial direction thereof and the other end thereof is closed, and thesuction section 74 includes theopening 75 that communicates with the inner section between the one end and the other end. The drivingsection 76 causes thesuction section 74 to move to the first position at which theopening 75 and thehollow section 72c communicate with each other, and to the second position at which theopening 75 is closed by themain body 72. In this configuration, theopening 75 that communicates with the inner section of thesuction section 74 is closed by moving thesuction section 74 to the second position. Therefore, at the second position, the suction force is not generated in thesuction section 74. Consequently, the power consumption of the negative pressure source can be reliably reduced. - In the present embodiment, in addition to the first position and the second position, the driving
section 76 can move thesuction section 74 to a third position at which a suction force that is weaker than that generated at the first position is generated in thesuction port 74a by providing communication between a part of theopening 75 and thehollow section 72c. The drivingsection 76 causes thesuction section 74 to move to the third position when theyarn joining device 13 joins theyarn 20. When theyarn 20 is being joined by theyarn joining device 13, the suction of the yarn end in thesuction section 74 is maintained. In such a case, if the suction force applied by thesuction section 74 on the yarn end is significant, a yarn breakage may occur. Therefore, the suction force can be reduced by moving thesuction section 74 to the third position that provides the communication between a part of theopening 75 and thehollow section 72c. Consequently, the yarn breakage during yarn joining can be minimized. - In the present embodiment, the
winder unit 2 includes thecutter 16 that cuts theyarn 20, theyarn monitoring device 17 that monitors the state of theyarn 20, and theyarn accumulating device 18 that pulls theyarn 20 from theyarn supplying section 6 and accumulates the pulledyarn 20. Theyarn joining device 13 is arranged between theyarn supplying section 6 and theyarn accumulating device 18, and joins theyarn 20 that is disconnected between theyarn supplying section 6 and theyarn accumulating device 18. Thefirst catching section 14, thecutter 16, theyarn monitoring device 17, and theyarn accumulating device 18 are arranged in this order downstream of theyarn joining device 13. With such a configuration, when theyarn 20 is disconnected by thecutter 16 upon detection of a yarn defect by theyarn monitoring device 17, the first catchingsection 14 can reliably catch the disconnectedyarn 20, and the caught yarn can be guided to theyarn joining device 13. - In the present embodiment, the first catching
section 14 includes theyarn detecting section 78 that detects the yarn end sucked into thesuction port 74a. With this configuration, whether or not the yarn end is sucked into thesuction section 74 can be detected. - Exemplary embodiments of the present invention are explained above. The present invention, however, is not limited to the above embodiments.
- As shown in
FIG. 7 , according to another embodiment of the present invention, a first catchingsection 90 includes abase 92, amain body 94, asuction section 96, ashutter 98, and ayarn detecting section 100. Thefirst catching section 90 includes a not shown driving section. The driving section has the same configuration as that explained in the first embodiment, and causes thesuction section 96 to reciprocate (advance / retract). An air type cylinder can be adopted as the driving section. - The
main body 94 is mounted on a bottom surface of thebase 92. Themain body 94 reciprocatably (slidably) supports thesuction section 96. - The
suction section 96 is a cylindrical member. Thesuction section 96 reciprocates along an axial direction (longitudinal direction) thereof in themain body 94. Asuction port 96a is arranged at one end of thesuction section 96 in the axial direction thereof. Thesuction port 96a brings theyarn 20 inside. A negative pressure source is connected to the other end of thesuction section 96 in the axial direction thereof. - The driving section moves, as shown in
FIG. 7 , thesuction section 96 to a first position at which thesuction port 96a is open when theshutter 98 opens, and as shown inFIG. 8 , to a second position at which thesuction port 96a is closed by theshutter 98. A suction force is generated when thesuction section 96 is positioned at the first position. The suction force is not generated when thesuction section 96 is positioned at the second position. - The
shutter 98 opens or closes thesuction port 96a in accordance with the movement of thesuction section 96. Theshutter 98 is arranged on the one end side of thesuction section 96. Theshutter 98 is fixed to the base 92 with a mountingmember 99. Theshutter 98 is arranged so as to be swingable on the mountingmember 99. Theshutter 98 swings in accordance with the reciprocating movement of thesuction section 96. Theshutter 98 is biased in a counter-clockwise direction by a not shown biasing member. Upon being pressed by thesuction section 96, theshutter 98 swings in a clockwise direction. Moreover, by functioning in cooperation with thesuction section 96, theshutter 98 clamps theyarn 20. - The
yarn detecting section 100 detects theyarn 20. Theyarn detecting section 100 is mounted on themain body 94. Specifically, theyarn detecting section 100 is mounted on themain body 94 with the mountingmember 99. Theyarn detecting section 100 is arranged on thesuction port 96a side of thesuction section 96. Accordingly, theyarn detecting section 100 detects theyarn 20 sucked in thesuction section 96. - The operation of the first catching
section 90 is explained next. As shown inFIG. 8 , when the first catchingsection 90 is in standby state, thesuction section 96 is positioned at the second position. At the second position, thesuction section 96 is positioned on the rear side (thesuction port 96a is positioned at a position away from the yarn path). At this position, thesuction port 96a of thesuction section 96 is closed by theshutter 98. Accordingly, the suction force is not generated in thesuction port 96a of thesuction section 96. - For example, when a yarn defect is detected by the
yarn monitoring device 17 and theyarn 20 is cut by thecutter 16, thefirst blower 11 blows off theyarn 20 on theyarn supplying section 6 side (theyarn supplying bobbin 21 side) in the upward direction. When theyarn 20 is cut, thesuction section 96 is moved by the driving section to the first position in the first catchingsection 14, as shown inFIG. 7 . At the first position, thesuction section 96 is positioned on the front side (thesuction port 96a is positioned at a position near the yarn path). At this position, theshutter 98 is open upon being pressed away by thesuction section 96. Accordingly, in thesuction section 96, the negative pressure acts therein and the suction force is generated. - In the first catching
section 90, thesuction section 96 catches the yarn end of theyarn 20 fed by thefirst blower 11, the driving section causes thesuction section 96 to move to the second position. At the second position, the one end of thesuction section 96 is positioned near theyarn detecting section 100. Accordingly, theyarn 20 caught by thesuction section 96 is detected by theyarn detecting section 100. However, when theyarn 20 is not detected by theyarn detecting section 100, thesuction section 96 is again moved to the first position, and the operation of catching theyarn 20 is performed again in the first catchingsection 90. At the second position, theshutter 98 closes thesuction port 96a of thesuction section 96. Accordingly, by the cooperative functioning of thesuction section 96 and theshutter 98, theyarn 20 caught by thesuction section 96 is clamped. By operating theyarn joining device 13 in the yarn clamped state, theyarn 20 on theyarn supplying bobbin 21 side caught by the first catchingsection 90 and theyarn 20 on theyarn accumulating device 18 side caught by the second catchingsection 12 are joined. - When the yarn joining operation by the
yarn joining device 13 is completed, the driving section causes thesuction section 96 to move to the front in the first catchingsection 90. Accordingly, the clamping of the yarn 20 (catching of the yarn 20) by thesuction section 96 and theshutter 98 is released. - In the first catching
section 90, when thesuction section 96 is at the first position that is near the yarn path of theyarn 20, the suction force is generated in thesuction port 96a, and when thesuction section 96 is at the second position that is retracted from the yarn path, the suction force is not generated in thesuction port 96a. In this configuration, when the yarn end is not getting sucked, by moving thesuction section 96 to the second position, the suction force cannot be generated in thesuction port 96a. The negative pressure source consumes power when generating the suction air current in thesuction port 96a of thesuction section 96, and reduces the power consumption when not generating the suction air current in thesuction port 96a of thesuction section 96. Consequently, the power consumption of the negative pressure source can be reduced in the first catchingsection 90 in which the suction air current is not generated when the yarn end is not getting caught. As a result, in thewinder unit 2, an efficient operation can be achieved. - In the above embodiments, a configuration in which the
driving section 76 includes themotor 80 and the drivingforce transmitting mechanism 81 is cited as an example. The driving section, however, can have any configuration as long as it reciprocally moves thesuction section - In the above embodiments, the configuration in which the
yarn accumulating device 18 is omitted and theyarn 20 from theyarn supplying section 6 is directly wound by thepackage forming section 8, and when theyarn 20 is disconnected, theyarn 20 is caught from thepackage forming section 8 and guided to theyarn joining device 13 can be applied. - In the above embodiments, the
yarn supplying section 6 is not limited to the one that transports theyarn supplying bobbin 21 by mounting on the tray. That is, theyarn supplying section 6 can be a magazine-type bobbin feeder. In this configuration, when the bobbin feeder feeds a newyarn supplying bobbin 21 into theyarn supplying section 6, the bobbin feeder can pull the yarn end from theyarn supplying bobbin 21 and convey the yarn end to thefirst blower 11. Theauxiliary blower 28 can be omitted in this case. - In the above embodiments, traversing of the
yarn 20 is performed by the traversingdrum 24 in thepackage forming section 8. Thepackage forming section 8 is not limited to such a configuration. An arm-type or a belt-type traverse mechanism can be used for traversing theyarn 20. In the above embodiments, even though a torsion coil spring (not shown) is used, a variety of elastic members can be used. Moreover, in the above embodiments, theyarn 20 can be wound into a cheese-shapedpackage 30 or a cone-shapedpackage 30. The material and shape of various components explained above are not limited to those mentioned above, and it is possible to adopt various materials and shapes.
Claims (9)
- A yarn winding device (2) comprising:a yarn supplying section (6) adapted to support a yarn supplying bobbin (21) on which a yarn is wound;a winding section (8) adapted wind the yarn pulled from the yarn supplying bobbin (21) supported in the yarn supplying section (6);a yarn-end blower (11) adapted to blow off a yarn end from the yarn supplying bobbin (21) to the winding section (8) side by blowing an air current; anda yarn catching section (14; 90) adapted to catch the yarn end blown off by the yarn-end blower (11), wherein the yarn catching section (14; 90) includesa main body (72; 94); anda suction section (74; 96) that is constituted by a cylindrical member on which a suction port (74a; 96a) adapted to suck the yarn is formed, characterized in thatthe suction section (74; 96) is arranged so as to be capable of performing a reciprocating linear movement in an axial direction of the cylindrical member in the main body (72; 94), in which a suction force is generated in the suction port (74a; 96a) when the suction section (74; 96) is at a first position that is near a yarn path of the yarn that moves from the yarn supplying section (6) to the winding section (8), and the suction force is not generated in the suction port (74a; 96a) when the suction section (74; 96) is at a second position that is retracted from the yarn path.
- The yarn winding device (2) as claimed in Claim 1, characterized in that the yarn catching section (14; 90) includes a driving section (76) adapted to cause the suction section (74; 96) to perform the reciprocating movement, wherein the driving section (76)is adapted to cause the suction section (74; 96) to move to the first position and to the second position.
- The yarn winding device (2) as claimed in Claim 2, characterized in that
the main body (72) includes a hollow section (72c) that forms a space where a part of the suction section (74) is positioned, and in which a negative pressure exists by an action of a negative pressure source,
in the suction section (74), the suction port (74a) is arranged on a first end thereof in an axial direction and a second end thereof is closed, and an opening (75) that communicates with an inner section is arranged between the first end and the second end, and
the driving section (76)is adapted to cause the suction section (74) to move to the first position that provides communication between the opening (75) and the hollow section (72c), and to the second position whereby the opening (75) is closed by the main body (72). - The yarn winding device (2) as claimed in Claim 3, further comprising a yarn joining device (13) adapted to join the yarn of the yarn supplying bobbin (21) caught by the yarn catching section (14; 90) and the yarn wound on the winding section (8), characterized in that
the driving section (76),in addition to the first position and the second position, is adapted to move the suction section (74) to a third position at which a weaker suction force than that generated at the first position is generated in the suction port (74a) by providing communication between a part of the opening (75) and the hollow section (72c), andis adapted to move the suction section (74) to the third position when the yarn joining device (13) is joining the yarn. - The yarn winding device (2) as claimed in Claim 4, further comprising a cutter (16) adapted to cut the yarn, and a yarn monitoring device adapted to monitor a state of the yarn, characterized in that
the yarn joining device (13) is arranged between the yarn supplying section (6) and the winding section (8), and is adapted to join the yarn disconnected between the yarn supplying section (6) and the winding section (8), and
the yarn catching section (14; 90), the cutter (16) and the yarn monitoring device (17) are arranged in this order downstream of the yarn joining device (13). - The yarn winding device (2) as claimed in Claim 4, further comprising a cutter (16) adapted to cut the yarn, a yarn monitoring device (17) adapted to monitor a state of the yarn, and a yarn accumulating device (18) adapted to pull and accumulates the yarn from the yarn supplying section (6), characterized in that
the yarn joining device (13) is arranged between the yarn supplying section (6) and the yarn accumulating device (18), is adapted to join the yarn disconnected between the yarn supplying section (6) and the yarn accumulating device (18), and
the yarn catching section (14; 90), the cutter (16), the yarn monitoring device (17), and the yarn accumulating device (18) are arranged in this order downstream of the yarn joining device (13). - The yarn winding device (2) as claimed in any one of Claims 1 to 6, characterized in that the yarn catching section (14; 90) includes a detecting section (78; 100) adapted to detect the yarn end sucked in the suction port (74a; 96a).
- The yarn winding device (2) as claimed in Claim 1, characterized in that the yarn catching section (90) includes a shutter (98) adapted to open or close the suction port (96a) in accordance with a movement of the suction section (96).
- The yarn winding device (2) as claimed in Claim 8, characterized in that the yarn catching section (14; 90) includes a driving section (76) that causes the suction section (74; 96) to perform the reciprocating movement, and
the driving section (76) is adapted to move the suction section (96) to the first position where the shutter opens to open the suction port (96a), and to the second position where the suction port (96a) is closed by the shutter (98).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015208155A JP2017081654A (en) | 2015-10-22 | 2015-10-22 | Yarn winding device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3159294A1 true EP3159294A1 (en) | 2017-04-26 |
EP3159294B1 EP3159294B1 (en) | 2020-03-18 |
Family
ID=57211306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16195332.8A Active EP3159294B1 (en) | 2015-10-22 | 2016-10-24 | Yarn winding device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3159294B1 (en) |
JP (1) | JP2017081654A (en) |
CN (1) | CN106927311B (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012020852A (en) | 2010-07-15 | 2012-02-02 | Murata Machinery Ltd | Yarn winding device |
EP2594517A1 (en) * | 2010-07-15 | 2013-05-22 | Murata Machinery, Ltd. | Yarn winding device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3843553A1 (en) * | 1988-12-23 | 1990-07-05 | Schlafhorst & Co W | YARN DELIVERY UNIT OF A WINDING MACHINE |
JPH10273269A (en) * | 1997-03-28 | 1998-10-13 | Toray Ind Inc | Thread package surface processing method and device thereof |
JP2011144029A (en) * | 2010-01-17 | 2011-07-28 | Murata Machinery Ltd | Yarn winding device |
JP2014234256A (en) * | 2013-05-31 | 2014-12-15 | 村田機械株式会社 | Yarn winding machine |
CN103601037A (en) * | 2013-12-05 | 2014-02-26 | 上海二纺机机械有限公司 | Air door and large-suction-nozzle air door of combined yarn trap of automatic winder |
-
2015
- 2015-10-22 JP JP2015208155A patent/JP2017081654A/en active Pending
-
2016
- 2016-10-09 CN CN201610881075.4A patent/CN106927311B/en active Active
- 2016-10-24 EP EP16195332.8A patent/EP3159294B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012020852A (en) | 2010-07-15 | 2012-02-02 | Murata Machinery Ltd | Yarn winding device |
EP2594517A1 (en) * | 2010-07-15 | 2013-05-22 | Murata Machinery, Ltd. | Yarn winding device |
Also Published As
Publication number | Publication date |
---|---|
JP2017081654A (en) | 2017-05-18 |
CN106927311A (en) | 2017-07-07 |
CN106927311B (en) | 2019-12-13 |
EP3159294B1 (en) | 2020-03-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2998254B1 (en) | Yarn winding device and yarn winding machine | |
JP5007826B2 (en) | Yarn winding device and automatic winder equipped with this yarn winding device | |
EP2479129B1 (en) | Yarn winding machine | |
EP2594516B1 (en) | Bobbin winding device | |
CN103443005B (en) | Yarn take-up device and reel for yarn winding method | |
EP2594517A1 (en) | Yarn winding device | |
CN113862804A (en) | Yarn hanging mechanical arm | |
EP2990367B1 (en) | Yarn winding device | |
EP2502863A2 (en) | Winding unit, automatic winder and aligning method of yarn supplying bobbin | |
EP2072440B1 (en) | Unwinding assisting device and method for operating an unwinding assisting device | |
EP2657382A2 (en) | Yarn monitoring device and yarn winding machine including the same | |
EP2749516B1 (en) | Yarn guiding-out device and yarn winding machine | |
CN107963512B (en) | Yarn winding device and package rotation stopping method | |
EP3159294B1 (en) | Yarn winding device | |
EP3159293B1 (en) | Yarn winding device | |
EP2078691B1 (en) | Kink preventing device and automatic winder comprising the same | |
CN106927303B (en) | Tension applying device and yarn winding device | |
JP2009155101A (en) | Winding unit and automatic winder having the same | |
EP4112521A1 (en) | Yarn winding machine | |
CN107963518B (en) | Yarn winding device and yarn splicing method | |
EP2733102A2 (en) | Textile machine | |
CN115535730A (en) | Waxing device and yarn winding device | |
CN114575006A (en) | Spinning machine | |
JP2019059601A (en) | Yarn winding machine | |
JP2023089779A (en) | Yarn winder |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20170824 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20180703 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20191206 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602016031903 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1245697 Country of ref document: AT Kind code of ref document: T Effective date: 20200415 Ref country code: IE Ref legal event code: FG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200618 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20200318 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200618 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200619 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200718 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200812 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1245697 Country of ref document: AT Kind code of ref document: T Effective date: 20200318 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602016031903 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 |
|
26N | No opposition filed |
Effective date: 20201221 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20201024 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201024 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20201031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201031 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201031 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201031 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201024 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201024 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200318 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20230920 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20230920 Year of fee payment: 8 |