WO2011040544A1 - 糸巻取装置 - Google Patents
糸巻取装置 Download PDFInfo
- Publication number
- WO2011040544A1 WO2011040544A1 PCT/JP2010/067115 JP2010067115W WO2011040544A1 WO 2011040544 A1 WO2011040544 A1 WO 2011040544A1 JP 2010067115 W JP2010067115 W JP 2010067115W WO 2011040544 A1 WO2011040544 A1 WO 2011040544A1
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- WIPO (PCT)
- Prior art keywords
- yarn
- unit
- winding
- spun
- winding device
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
- B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
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- 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.
- the spun yarn wound around the yarn supplying bobbin is removed, and the spun yarns of a large number of yarn supplying bobbins are connected to each other to be wound back into a cone or cheese-like package.
- the rewinding by this yarn winding device winds the spun yarn that is unwound from the yarn supply bobbin while traversing the spun yarn on a package that is rotated by a traverse drum through a number of yarn guides.
- the yarn feeding bobbin becomes empty, the bobbin change for supplying a new yarn feeding bobbin is performed, and then the bobbin change is repeated until the bobbin change is repeated until the package has a predetermined shape. Yes.
- the yarn winding device joins the spun yarns of a plurality of yarn feeding bobbins into one package.
- the package when bobbin change, yarn breakage, and yarn cut, the package once wound is stopped and reversely rotated, and after a certain amount of spun yarn is pulled out of the package, the yarn splicing is performed. After that, the package is rotated forward to resume winding. As described above, when the forward rotation, the rotation stop, and the reverse rotation are repeated, a part of the yarn layer of the wound package may be disturbed.
- the bobbin when the yarn is broken, or when the yarn is cut, the yarn end on the package side is temporarily wound around the package, but the yarn end falls from the end surface of the package and becomes entangled. Special work was sometimes required.
- Patent Document 1 discloses a supply device used for preserving a yarn in a process of supplying the yarn to a yarn consuming machine such as a loom that processes the yarn as a weft. It is disclosed. However, since the yarn stored in this supply device has already been freed of yarn defects (yarn defects) by the yarn winding device, the concept of yarn splicing does not exist. The function is completely different from the storage part.
- Patent Document 2 discloses a technique related to air control of yarn feeding to a magazine of a yarn winding machine for continuous yarn winding in a textile machine or the like.
- the magazine in this document is one that only loosens the yarn so that fluctuations in the upstream yarn tension are not transmitted to the downstream side. This is completely different from the yarn storage section in the problem solving means of the present application described later.
- JP 2001-516691 A Japanese Patent Publication No. 48-20455
- a yarn winding device configured as follows is provided. That is, the yarn winding device is provided between the yarn supplying unit that unwinds the spun yarn from the yarn supplying bobbin, a winding unit that winds the spun yarn as a package, and between the yarn supplying unit and the winding unit, A yarn splicing operation is performed to connect a yarn storage unit including a yarn storage body that winds and stores the spun yarn, a yarn end of the spun yarn on the yarn supplying unit side, and a yarn end of the spun yarn on the yarn storage unit side A yarn joining portion; and a yarn end drawing mechanism that pulls a yarn end of the spun yarn wound around the yarn reservoir to the yarn supplying portion side when performing the yarn joining operation by the yarn joining portion.
- the winding portion can continue winding the spun yarn even when the bobbin is changed, cut, or broken.
- the winding section can wind up the spun yarn even when the bobbin is changed, when the yarn is cut, or when the yarn is broken. Will be able to continue. That is, when performing yarn splicing at the time of bobbin change, yarn cutting, or yarn breakage of the yarn feeding bobbin, the wound portion can be continuously supplied with spun yarn from the yarn storage portion, The “spun yarn on the winding portion side” may be pulled out from the yarn accumulating portion by the operation of the yarn end pulling mechanism instead of being pulled out from the package.
- the above-described yarn winding device is further configured as follows. That is, the yarn end drawing mechanism pulls the yarn end of the spun yarn wound around the yarn reservoir by the air flow toward the yarn supplying unit. According to the above configuration, since the yarn end is pulled out by the air flow, the yarn end can be pulled out without damaging other yarns.
- the yarn end drawing mechanism includes a yarn guide portion that has a yarn path through which the spun yarn can travel and guides the spun yarn on the yarn feeding portion side at a predetermined winding position of the yarn reservoir. ing. According to the above configuration, since the yarn drawing mechanism is integrally provided with the yarn guide portion, the yarn guiding operation at the time of winding the yarn and the yarn drawing operation at the time of the yarn joining operation can be performed at an optimum place.
- the above-described yarn winding device is further configured as follows. That is, the predetermined winding position of the yarn storage body where the spun yarn is guided by the yarn guide section, and the yarn end drawing mechanism, the yarn end of the spun yarn wound around the yarn storage body by an air flow.
- the position to be pulled out to the yarn supplying section side is the same position in the rotation axis direction of the yarn reservoir. According to the above configuration, winding and drawing out of the yarn end are performed at the same position in the rotation axis direction of the yarn storage body, so the cut yarn end exists at the winding position. Can be pulled out reliably.
- the above-described yarn winding device is further configured as follows. That is, the apparatus further includes a gas flow generation unit for causing the yarn guide unit to generate a gas flow that flows from the yarn storage body side toward the yarn supply unit side.
- the yarn storage unit further includes a drive unit that rotates the yarn guide unit around a winding central axis of the yarn storage body, and a yarn end of a spun yarn that is on the outer periphery of the yarn storage body by the yarn end drawing mechanism And a control unit that controls the drive unit so that the yarn guide unit rotates in a direction opposite to that during storage when the yarn guide unit is pulled out to the yarn joining unit side.
- the yarn end of the spun yarn on the outer periphery of the yarn reservoir is sucked into the yarn path of the yarn guide portion by the gas flow, It is pulled out toward the yarn feeding section.
- the yarn guide portion serves both the role of guiding the spun yarn on the yarn supply portion side on the outer periphery of the yarn reservoir and the role of constituting a part of the yarn end drawing mechanism.
- a yarn winding device with a simple configuration is realized.
- the spun yarn is already set on the yarn path at the time of yarn storage when the yarn joining is completed. Yarn storage can be resumed immediately after splicing.
- the yarn storage section further includes a drive section that rotates the yarn guide section around the winding center axis of the yarn storage body, and the yarn storage section of the spun yarn on the outer periphery of the yarn storage body by the yarn end drawing mechanism.
- a control unit is further provided for controlling the drive unit so that the yarn guide unit rotates in a direction opposite to that during storage when the yarn end is pulled out to the yarn joining unit side. According to the above configuration, the yarn end of the spun yarn on the outer periphery of the yarn reservoir is more easily sucked into the yarn path of the yarn guide portion.
- the above-described yarn winding device is further configured as follows.
- the apparatus further includes a drawing detection unit capable of detecting that the yarn end of the spun yarn stored in the yarn storage unit is pulled out to the yarn feeding unit side.
- the pulling out by the yarn end pulling mechanism is made successful by considering a time margin.
- the above-described effects are also exhibited in a chained manner as follows. That is, if the time required for the above-mentioned drawing is shortened, the time for interrupting the storage of the spun yarn by the yarn storage unit can be shortened.
- the yarn storage unit stores the yarn in one yarn splice. It is possible to suppress the consumption of the stored amount of spun yarn. Therefore, it becomes easy to avoid the lack of spun yarn in the yarn storage section at the time of yarn splicing.
- the above-described yarn winding device is further configured as follows. That is, the drawer detection unit is provided in the yarn storage unit. In this way, by providing the pull-out detection unit in the yarn storage unit, the yarn end of the spun yarn stored in the yarn storage unit is pulled out to the yarn supply unit side by the yarn end pull-out mechanism. The yarn end can be detected immediately before it is actually delivered to the yarn joining portion.
- the above-described yarn winding device is further configured as follows. That is, the yarn accumulating unit winds the winding unit at a normal winding speed from the start of bobbin change of the yarn feeding bobbin until the yarn joining operation of the yarn joining unit is executed at least once. It is configured to be able to store a yarn amount that is greater than the yarn amount to be taken. According to the above configuration, the winding at the normal winding speed by the winding unit is continued from the start of the bobbin change of the yarn supplying bobbin until the yarn joining unit completes the yarn joining. Can do. Therefore, a highly productive yarn winding device is realized.
- the normal winding speed by the winding unit is 1200 [m / min], and 6 [sec] from the start of the bobbin change until the yarn joining unit completes the yarn joining. If it requires, according to said solution means, the said thread
- the yarn storage unit further includes a yarn defect detection unit capable of detecting a yarn defect of the spun yarn supplied from the yarn supply unit, and a cutting device that cuts a yarn upstream of the detected yarn defect.
- a yarn defect detection unit capable of detecting a yarn defect of the spun yarn supplied from the yarn supply unit
- a cutting device that cuts a yarn upstream of the detected yarn defect.
- Winding at a speed can be continued. Therefore, a highly productive yarn winding device is realized. It is assumed that a normal winding speed by the winding unit is 1200 [m / min], and that it takes 3 [sec] from the time of the yarn cutting until the yarn joining unit completes the yarn joining. Then, according to said solution means, the said thread storage part will be comprised so that the thread
- the above-described yarn winding device is further configured as follows. That is, the yarn storage unit is configured to wind the winding unit at a normal winding speed from when the yarn breakage occurs until the yarn joining operation by the yarn joining unit is performed at least once. It is configured to be able to store a yarn amount equal to or greater than the yarn amount taken up by the winding unit at a normal winding speed configured to be capable of storing a yarn amount equal to or greater than the yarn amount to be taken. According to the above configuration, the winding at the normal winding speed by the winding unit can be continued from the time of yarn breakage until the yarn joining unit completes the yarn joining. Therefore, a highly productive yarn winding device is realized.
- the said thread storage part will be comprised so that the thread
- the above-described yarn winding device is further configured as follows. That is, the yarn storage unit is configured to be able to store the spun yarn at a yarn speed faster than a normal winding speed when the winding unit winds the spun yarn. That is, during yarn splicing by the yarn splicing unit, the storage of the spun yarn by the yarn accumulating unit is interrupted, and the spun yarn stored in the yarn accumulating unit is taken up by the winding unit, so that the yarn The amount of spun yarn stored by the storage unit temporarily decreases. Therefore, according to the above configuration, after the storage of the spun yarn by the yarn storage unit is resumed, the storage amount can be recovered to the level before the interruption. Therefore, the amount of the spun yarn stored by the yarn storage unit can be kept to the minimum necessary (for example, three times of yarn splicing), so that a compact yarn storage unit is realized.
- the above-described yarn winding device is further configured as follows. That is, the yarn storage unit is provided with a storage amount detection unit that detects the storage amount of the spun yarn, and when it is detected that the storage amount detected by the storage amount detection unit has become a predetermined value or less, The winding unit further includes a control unit that reduces the winding speed of winding the spun yarn. According to the above configuration, it is possible to avoid running out of the storage amount of the spun yarn in the yarn storage unit with simple control.
- the above-described yarn winding device is further configured as follows. That is, the control unit gently reduces the winding speed to such an extent that no disturbance occurs in the yarn layer of the package. That is, when the winding speed is reduced, the yarn layer of the package may be disturbed depending on the mode of the reduction. Therefore, by configuring the control unit as described above, it is possible to suppress the occurrence of disturbance in the yarn layer of the package.
- the above-described yarn winding device is further configured as follows. That is, the yarn storage body has a first end on the yarn feeding unit side and a second end on the winding unit side, and is formed so that the outer periphery becomes shorter from the first end toward the second end. As a result, an inclined portion extending from the first end to the second end is formed, and the yarn guide portion guides the spun yarn on the yarn supplying portion side to the first end side on the outer periphery of the yarn reservoir. .
- the spun yarn on the yarn supplying section side is wound on the first end side on the outer periphery of the yarn reservoir, and the wound spun yarn travels on the outer periphery of the yarn reservoir on the outer periphery. It tries to move spontaneously by the winding force from the first end to the second end side. Therefore, overlapping of the spun yarns at the guide position of the spun yarn by the yarn guide unit is prohibited, and smooth unwinding of the spun yarn on the yarn reservoir is realized.
- the above-described yarn winding device is further configured as follows. That is, the inclined portion of the outer periphery of the front yarn reservoir is configured with at least two types of inclination, and the inclination on the first end side is set larger than the inclination on the second end side. According to the above shape, the spun yarn wound around the first end side on the outer periphery of the yarn reservoir starts to move to the second end side immediately after winding, and when the inclination gradually decreases, This movement becomes difficult. As a result, the spun yarns are densely arranged on the outer periphery of the yarn storage body, so that smooth unwinding of the spun yarn on the yarn storage body and a high storage amount are realized at the same time.
- the above-described yarn winding device is further configured as follows. That is, the yarn storage body has a first end on the yarn feeding unit side and a second end on the winding unit side.
- the yarn accumulating unit further includes a conveying unit that forcibly conveys the spun yarn wound around the outer periphery of the yarn accumulating body from the first end toward the second end.
- the yarn guide portion guides the spun yarn on the yarn feeding portion side to the first end side on the outer periphery of the yarn reservoir.
- the spun yarn is wound around the first end on the outer periphery of the yarn reservoir, and the spun yarn wound around the outer periphery of the yarn reservoir starts from the first end. It is forcibly moved toward the two ends. Therefore, overlapping of the spun yarns at the guide position of the spun yarn by the yarn guide unit is prohibited, and smooth unwinding of the spun yarn on the yarn reservoir is realized.
- the yarn storage section includes a plurality of rollers, a yarn winding mechanism that winds a spun yarn around the plurality of rollers, and a roller drive motor that rotates at least one of the plurality of rollers as a drive roller.
- the plurality of rollers are arranged so as to be able to rotate side by side so that their axes are positioned on the virtual circumference, and the rotation axes of the respective rollers are arranged to be inclined in the circumferential direction of the virtual circumference.
- the spun yarn wound around the roller by the yarn winding mechanism is sequentially conveyed to the virtual circle. It moves in a direction orthogonal to the surface surrounded by the circumference (hereinafter referred to as the feed direction).
- the feed direction a direction orthogonal to the surface surrounded by the circumference
- the above-described yarn winding device is further configured as follows. That is, when the yarn storage section rotates, the spinning storage drum around which the spun yarn is wound, the motor that rotates the rotary storage drum in both directions, and the spinning storage drum from the yarn supply section side. And a guiding member for guiding. According to the above configuration, at the time of yarn joining, the spun yarn wound around the rotary storage drum can be pulled out to the yarn supplying unit side by rotating the rotary storage drum in the opposite direction to the time of winding the spun yarn.
- the above-described yarn winding device is further configured as follows. That is, the yarn feeding section assists the unwinding of the spun yarn from the yarn supplying bobbin by lowering the regulating member covering the core tube of the yarn supplying bobbin in conjunction with the unwinding of the spun yarn from the yarn supplying bobbin.
- a yarn unwinding assisting device is provided.
- the yarn accumulating portion is arranged between the yarn supplying bobbin and the winding portion to interrupt the transmission of the yarn tension, so that the unwinding tension portion of the yarn supplying bobbin is caused by the traverse variation of the winding portion. It is possible to prevent the tension variation from being transmitted.
- the unwinding assist device to the yarn feeding bobbin, the yarn unwinding from the yarn feeding bobbin can be performed stably, so that yarn breakage is prevented and the unwinding speed from the yarn feeding bobbin is increased. Can do. Therefore, the unwinding efficiency from the yarn feeding bobbin can be improved.
- FIG. 1 Front view of winding unit Front view of accumulator Diagram showing the electrical configuration of the winding unit Diagram showing the behavior of spun yarn on the outer circumference of the accumulator Diagram showing the start of drawing out spun yarn Diagram showing the completion of drawing out spun yarn
- the figure which shows pulling out the yarn defect of the spun yarn Control flow during normal winding Control flow when thread breaks Control flow to prevent yarn deficiency Control flow during yarn cutting Control flow during bobbin change The figure which concerns on 2nd embodiment of this invention. The figure which concerns on 3rd embodiment of this invention. The figure which concerns on 5th embodiment of this invention. The figure which concerns on 6th embodiment of this invention.
- the autowinder 1 (textile machine) is configured by arranging a number of winding units 2 (yarn winding device) shown in FIG.
- Each winding unit 2 can detect a yarn supplying section 3 that unwinds and supplies the spun yarn Y from the yarn supplying bobbin B, and a yarn defect (yarn defect) of the spun yarn Y supplied from the yarn supplying section 3.
- a yarn clearer 4 (yarn defect detecting unit), a winding unit 5 for winding the spun yarn Y as a package P, and a bobbin change of the yarn supplying bobbin B are provided between the yarn supplying unit 3 and the winding unit 5.
- FIG. 1 shows a frame 8 that supports the above-described components of the winding unit 2.
- the frame 8 includes a control unit 9 (see also FIG. 3) for controlling each component. Contained.
- the yarn supplying unit 3 receives a yarn supplying bobbin B from a magazine (yarn supplying bobbin holding unit) (not shown), supports the yarn supplying bobbin B in a suitable posture, and spun yarn from the yarn supplying bobbin B.
- the yarn unwinding assisting device 11 assists the unwinding of Y, and the yarn feeler 12 for detecting the presence of the spun yarn Y between the yarn unwinding assisting device 11 and the yarn joining portion 6.
- the yarn feeler 12 is electrically connected to the control unit 9 described above, and transmits an empty bobbin signal to the control unit 9 when the spun yarn Y cannot be detected.
- the yarn clearer 4 detects a yarn defect such as a slab or foreign matter of the spun yarn Y, and detects the yarn defect by comparing the mass of the spun yarn Y with a reference value; and By comparing the diameter of the spun yarn Y with a reference value, it is possible to select one of the photoelectric type that detects a yarn defect.
- the yarn clearer 4 includes a yarn defect calculation unit 4b that calculates the length and thickness of the yarn defect of the spun yarn Y based on the detection result (for example, output voltage value) by the electrostatic capacitance type or the photoelectric method.
- the yarn clearer 4 is provided with a cutter 4a (cutting device) for cutting the spun yarn Y.
- the cutter 4a cuts the spun yarn Y as soon as it receives a yarn cutting signal from the yarn clearer 4.
- the yarn defect calculation unit 4b starts to accumulate the length of the yarn defect and calculates the thickness of the yarn defect. get.
- the yarn clearer 4 comprehensively evaluates the calculation result (the length and thickness of the yarn defect) from the yarn defect calculation unit 4b from various viewpoints, and determines that the calculation result has deviated from the evaluation reference range separately set by the operator.
- the spun yarn Y is cut by transmitting a yarn cutting signal to the cutter 4a, and a yarn defect detection signal is transmitted to the control unit 9.
- This yarn defect detection signal includes the yarn defect length information accumulated by the yarn defect calculation unit 4b and the yarn defect type information determined based on the yarn defect thickness information calculated by the yarn defect calculation unit 4b. It is.
- the control unit 9 stores the length information and type information of the yarn defect acquired from the yarn clearer 4 in the RAM. Further, the yarn clearer 4 is configured to detect the yarn breakage of the spun yarn Y based on the thickness information of the yarn defect calculated by the yarn defect calculating unit 4b. When a yarn breakage is detected, a yarn breakage signal is transmitted to the control unit 9.
- the winding unit 5 includes a cradle 13 that holds the winding bobbin Bf and a traverse drum 14 that traverses the spun yarn Y.
- the cradle 13 is configured to be swingable so as to be switched between a contact state and a non-contact state of the package P with respect to the traverse drum 14, and the cradle 13 is rotated according to the winding thickness of the package P. By doing so, a suitable contact state between the package P and the traverse drum 14 can be obtained.
- the cradle 13 is provided with a package brake 15 (see FIG. 3) that applies a braking force to the rotation of the winding bobbin Bf.
- the traverse drum 14 is a traverse as a drive source for rotating the traverse drum 14.
- a vibration drum motor 16 (see FIG. 3) is connected.
- the package brake 15 and the traverse drum motor 16 are electrically connected to the control unit 9 as shown in FIG. 3, so that the control unit 9 winds the yarn Y by the winding unit 5.
- the taking speed Va can be freely increased or decreased.
- the winding unit 2 is further provided with a yarn end drawing mechanism W.
- This yarn end drawing mechanism W is used when the yarn feeding bobbin B is changed, when the yarn defect is detected by the yarn clearer 4, or when the yarn is cut or in other words, the yarn joining by the yarn joining portion 6 is performed. Is required, the yarn end of the spun yarn Y wound around the accumulator 7 is pulled out to the yarn joining portion 6 side. Details will be described later.
- the yarn joining unit 6 includes a yarn joining execution unit 17 that performs a yarn joining operation between the spun yarn Y on the yarn feeding unit 3 side and the spun yarn Y on the winding unit 5 side, and the spun yarn on the winding unit 5 side.
- An upper intermediate pipe 18 (upper yarn end guide unit) that receives Y from the yarn end drawing mechanism W and sets it in the yarn joining execution unit 17, and a lower yarn that sets the spun yarn Y on the yarn feeding unit 3 side in the yarn joining execution unit 17
- a side intermediate pipe 19 lower yarn end guide portion.
- the upper relay pipe 18 is supported so as to be rotatable around a shaft 18a, and is supplied with a negative pressure from a negative pressure source 20 shown in FIG.
- a mouth 18b is formed.
- the suction port 18b is provided with a simplified clamp portion 18c that clamps the spun yarn Y sucked into the suction port 18b by closing the suction port 18b.
- An upper pipe motor 21 (see FIG. 3) as a drive source for rotating the upper relay pipe 18 is electrically connected to the control unit 9, so that the control unit 9 can freely connect the upper relay pipe 18. Can be rotated.
- the lower relay pipe 19 is supported so as to be rotatable around a shaft 19a, is supplied with negative pressure from the negative pressure source 20 shown in FIG. 2, and a suction port 19b is formed at the tip thereof.
- the suction port 19b is provided with a clamp portion 19c.
- a lower pipe motor 22 (see FIG. 3) as a drive source for rotating the lower relay pipe 19 is electrically connected to the control unit 9, so that the control unit 9 is connected to the lower relay pipe 19. Can be freely rotated.
- the splicing execution unit 17 is provided with a splicer motor 23 as a drive source for executing the splicing, and the splicer motor 23 (see FIG. 3) is also electrically connected to the control unit 9. Accordingly, the control unit 9 can freely start the yarn joining operation by the yarn joining execution unit 17.
- a gate type tensor 24 for applying a desired tension to the spun yarn Y is provided between the yarn feeler 12 and the yarn joining portion 6, and the accumulator 7 and the winding portion 5
- a waxing device 26 for applying wax to the spun yarn Y, Is provided.
- the spun yarn Y unwound from the yarn feeding bobbin B is passed through the yarn unwinding assisting device 11, the yarn feeler 12, the gate type tensor 24, and the yarn clearer 4 in order, and then the accumulator 7.
- the spun yarn Y stored in the accumulator 7 is wound while being traversed by the traverse drum 14 via the gate type tensor 25 and the waxing device 26 in this order.
- the take-up unit 5 winds the package as a package P.
- the spun yarn Y on the yarn feeding unit 3 side as viewed from the accumulator 7 is The yarn end of the spun yarn Y wound around the accumulator 7 is drawn out to the yarn joining portion 6 side by the yarn end drawing mechanism W described above when the yarn is once wound around the accumulator 7 and then spliced.
- the accumulator 7 has a yarn storage body 27 formed in a cylindrical shape around which the spun yarn Y is wound on the outer periphery, and a yarn path 28 in which the spun yarn Y can travel.
- a winding arm 29 (yarn guiding portion) for guiding the spun yarn Y on the yarn feeding section 3 side on the outer periphery of the yarn storage body 27 and a winding arm 29 that can rotate around the axis C.
- a winding arm motor 30 (drive unit) that rotates around the axis C of the yarn storage body 27 is provided as a main configuration.
- the yarn storage body 27 has a first end 31 on the yarn feeding unit 3 side and a second end 32 on the winding unit 5 side, and the outer periphery from the first end 31 toward the second end 32. Are formed on the outer periphery of the yarn storage body 27 so that grooves 33 extending in parallel with the axis C are equally spaced in the circumferential direction. Specifically, as shown in FIG. 4A, the inclination ⁇ of the lower end 34 on the first end 31 side in the outer periphery of the yarn reservoir 27 is the inclination ⁇ of the upper end 35 on the second end 32 side.
- the inclination ⁇ of the lower end portion 34 is gradually changed between 2 and 60 ° with respect to the axis C, and the inclination ⁇ of the upper end portion 35 is set to 2 ° with respect to the axis C.
- the part 34 and the upper end part 35 are smoothly connected.
- the above-described yarn reservoir 27 is supported on the tip (upper end) of the output shaft 36 of the winding arm motor 30 via a bearing schematically shown. Due to the magnetic coupling force between the magnet 38 attached to the first magnet support 37 fixed to the end 31 side and the magnet 40 attached to the second magnet support 39 provided in the winding arm motor 30. The rotation of the yarn storage body 27 with respect to the winding arm motor 30 is restricted.
- the winding arm 29 is connected to the outer peripheral surface of the output shaft 36, and bypasses the linear portion 41 extending radially outward from the outer peripheral surface of the output shaft 36 and the first magnet support body 37, and the yarn storage body. 27, and a curved portion 42 reaching the vicinity of the lower end portion 34, and an opening 43 facing the lower end portion 34 is formed at the distal end of the curved portion 42. With this configuration, the winding arm 29 can rotate around the axis C of the yarn storage body 27 between the first magnet support 37 and the second magnet support 39 described above.
- the spun yarn Y on the yarn feeding section 3 side guided into the yarn path 28 of the winding arm 29 is transferred to the yarn storage body.
- 27 is wound around the outer periphery of 27. More specifically, the opening 43 of the winding arm 29 is opposed to the lower end portion 34 on the first end 31 side of the yarn storage body 27, so that the spun yarn Y on the yarn feeding unit 3 side is wound.
- the arm 29 is guided to the lower end 34 on the first end 31 side on the outer periphery of the yarn reservoir 27 and is wound around the lower end 34.
- the yarn path 28 of the winding arm 29 communicates with the flow path 44 formed inside the output shaft 36.
- a balancer 45 formed integrally with the output shaft 36 is provided on the opposite side of the winding arm 29 and the output shaft 36.
- the winding arm motor 30 is a DC brushless motor in the present embodiment, and is electrically connected to the control unit 9, so that the control unit 9 rotates to the rotational speed of the winding arm 29, that is, to the yarn reservoir 27.
- the winding speed Vb as the yarn speed of the spun yarn Y to be wound can be freely controlled.
- a yarn passage 46 communicating with the passage 44 of the output shaft 36, and an opening to the yarn passage 46 and the upper relay pipe 18 side from the winding arm 29 side are provided.
- a blow-down nozzle 48 having a blow-down flow path 47 formed so as to incline toward is provided.
- a pressure air source 51 is connected to the downflow passage 47 via a connection pipe 49 and a connection pipe 50, and an electromagnetic wave electrically connected to the control unit 9 is connected between the connection pipe 49 and the connection pipe 50.
- a valve 52 is provided.
- an air flow from the yarn reservoir 27 side to the upper relay pipe 18 side. Is to be formed.
- an air flow generating portion X for generating an air flow (gas flow) flowing from the yarn reservoir 27 side toward the yarn joining portion 6 side in the yarn path 28 of the winding arm 29.
- the gas flow generation unit includes at least a blow-down nozzle 48 and a pressurized air source 51.
- the above-described yarn end drawing mechanism W is configured to include the winding arm 29 and the airflow generation part X. That is, the yarn end drawing mechanism W sucks the yarn end of the spun yarn Y stored in the accumulator 7 by the air flow formed in the winding arm 29 by the air flow generating unit X, and the yarn joining unit 6 side ( Pull out to the yarn feeding section 3 side). Specifically, the yarn end drawing mechanism W sucks the yarn end of the spun yarn Y stored in the accumulator 7 by the air flow formed in the winding arm 29 by the air flow generation unit X, and continues this suction. The spun yarn Y on the outer periphery of the yarn reservoir 27 is pulled out to the yarn joining portion 6 side through the yarn path 28 of the winding arm 29 while rotating the winding arm 29 in the direction opposite to that during storage. Has been.
- the yarn end since the yarn end is pulled out by the air flow, the yarn end can be pulled out without damaging the yarn Y.
- the yarn Y since the yarn Y is wound and the yarn end is pulled out at the same position in the axial direction of the yarn reservoir 27, the cut yarn end exists at the winding position. Therefore, the yarn end can be pulled out reliably.
- the winding arm motor 30 is provided with a rotary encoder 53 (rotation angle detection unit) that can detect the rotation angle of the winding arm 29.
- the rotary encoder 53 is electrically connected to the control unit 9. It is connected.
- the rotary encoder 53 transmits an angle signal corresponding to the rotation angle of the winding arm 29 to the control unit 9.
- a sensor 54 (drawing detection unit) is provided at the lower end of the blow-down nozzle 48.
- the pull-out sensor 54 is electrically connected to the control unit 9 and transmits a pull-out detection signal to the control unit 9 when it is detected that the yarn end of the spun yarn Y is pulled out to the yarn joining unit 6 side. It has become.
- the drawer sensor 54 in this embodiment can be said to be provided in the accumulator 7 in that it is installed on the winding arm motor 30 of the accumulator 7 via the blow-down nozzle 48 when viewed in the whole winding unit 2. .
- the accumulator 7 is provided with a storage upper limit sensor 55, a storage lower limit sensor 56, and a storage lower limit sensor 57 for detecting the storage amount of the spun yarn Y.
- These sensors 55 to 57 are supported by an accumulator mounting frame 58 for fixing the accumulator 7 to the frame 8, and are electrically connected to the controller 9 as shown in FIG.
- the storage upper limit sensor 55 is positioned at a position facing the upper end of the bundle of spun yarn Y wound around the outer periphery of the yarn storage body 27 when the storage amount M of the accumulator 7 becomes 300 m.
- the storage lower limit sensor 56 is positioned at a position facing the upper end of the bundle of spun yarn Y when the storage amount M of the accumulator 7 becomes 200 m.
- the storage lower limit sensor 57 is positioned at a position facing the upper end of the bundle of spun yarn Y when the storage amount M of the accumulator 7 is 40 m.
- the storage upper limit sensor 55 transmits a storage amount upper limit signal to the control unit 9 while detecting the presence of the spun yarn Y at the opposing position.
- the storage lower limit sensor 56 transmits a storage amount lower limit signal to the control unit 9 while detecting the presence of the spun yarn Y at the facing position.
- the storage lower limit sensor 57 is configured to transmit a storage amount lower limit signal to the control unit 9 while detecting the presence of the spun yarn Y at the facing position.
- the storage amount detection unit that detects the storage amount of the spun yarn Y in the accumulator 7 includes a storage upper limit sensor 55, a storage lower limit sensor 56, and a storage lower limit sensor 57.
- 300 m is a length that is equal to or longer than the length of the yarn Y wound by the winding unit 6 while repeating the yarn joining described later, for example, three times (at least once). Even when the winding of the yarn Y in the winding unit 6 is continued during the yarn joining, the yarn deficiency of the yarn Y in the accumulator 7 is less likely to occur.
- the control unit 9 shown in FIG. 3 includes a CPU (Central Processing Unit) which is an arithmetic processing unit, a ROM (Read Only Memory) in which a control program executed by the CPU and data used for the control program are stored.
- the RAM Random Access Memory
- the control program stored in the ROM is read by the CPU and executed on the CPU, so that the control program executes hardware such as the CPU, the traverse drum motor control unit 60, the winding arm motor control unit 61.
- the drawn yarn length calculation unit 63 and the upper pipe control unit 64 function.
- the traverse drum motor control unit 60 reduces the winding speed Va at which the winding unit 5 winds the spun yarn Y when the storage amount detected by the storage amount detection unit falls below a predetermined value. ing. Specifically, when the traverse drum motor control unit 60 stops receiving the storage amount lower limit signal from the storage lower limit sensor 56, the traverse drum motor control unit 60 gently increases the winding speed Va to such an extent that the yarn layer of the package P is not disturbed. Decelerate. Further, when the traverse drum motor control unit 60 stops receiving the storage amount lower limit signal from the storage lower limit sensor 57, the traverse drum motor control unit 60 quickly reduces the winding speed Va and stops the winding by the winding unit 5.
- the traverse drum motor control unit 60 decelerates the winding speed Va when the storage amount of the spun yarn Y by the accumulator 7 decreases, and further reduces the storage amount of the spun yarn Y of the accumulator 7. Thus, the deficiency of the spun yarn Y in the accumulator 7 is prevented in advance.
- the winding arm motor control unit 61 means that the winding arm 29 is in the storage state.
- the winding arm motor 30 is controlled so as to rotate in the reverse direction.
- the drawn yarn length calculation unit 63 uses the yarn end drawing mechanism W to draw the yarn from the accumulator 7.
- the drawn yarn length as the yarn length of the spun yarn Y drawn to the splicing unit 6 side is calculated. That is, the drawn yarn length calculation unit 63 is based on the diameter ⁇ of the yarn reservoir 27 stored in advance in the ROM and the rotation angle of the winding arm 29 from when the drawn sensor 54 detects the spun yarn Y.
- the drawn yarn length is calculated, and the drawn yarn length as the calculation result is stored in the RAM.
- the upper pipe control unit 64 compares the yarn defect length acquired from the yarn defect detection signal with the drawn yarn length calculated by the drawn yarn length calculation unit 63, and when the drawn yarn length reaches the yarn defect length, The upper intermediate pipe 18 is swung in the clamped state, and the spun yarn Y on the winding unit 5 side is guided to the yarn joining execution unit 17 and set.
- the operator of the autowinder 1 shown in FIG. 1 unwinds the spun yarn Y from the yarn feeding bobbin B, and uses the spun yarn Y to the yarn unwinding assisting device 11, the yarn feeler 12, the yarn clearer 4, the accumulator 7, and the gate type. It is set on the tensor 25 and the waxing device 26 and fixed to the take-up bobbin Bf.
- the yarn path of the spun yarn Y in the accumulator 7 is as shown in FIG. That is, the operator passes the spun yarn Y sequentially through the drawing sensor 54, the yarn passage 46 of the blow-down nozzle 48, the passage 44 of the output shaft 36, and the yarn passage 28 of the winding arm 29.
- the operator pulls the spun yarn Y at the opening 43 side of the winding arm 29, winds it around the yarn reservoir 27, for example, about 5 to 20 times, and sets it on the waxing device 26.
- the spun yarn Y in FIG. 2 is drawn thick for convenience of explanation, but actually, a bundle of spun yarn Y of about 600 windings is always stored on the yarn reservoir 27. Yes.
- the spun yarn Y on the yarn supplying section 3 side is guided to the lower end 34 of the yarn reservoir 27 by the winding arm 29 as shown in FIG.
- the yarn reservoir 27 is wound around the lower end 34 on the first end 31 side.
- the guide position A of the spun yarn Y1 by the winding arm 29 is determined so as to face the lower end portion 34, and is guided to the guide position A, and the lower end portion 34.
- a winding force F indicated by a symbol F is generated in a direction approaching the axis C of the yarn reservoir 27.
- This wrapping force F generates a running force f1 as a component force indicated by reference numeral f1 by engagement with the sharp inclination ⁇ of the lower end portion 34, and the spun yarn Y1 causes the spun yarn Y1 to be shown in FIG.
- the outer periphery of the yarn reservoir 27 tends to move spontaneously from the first end 31 side toward the second end 32 side. Therefore, as shown in FIG. 4C, even if the guide position A of the spun yarn Y1 by the winding arm 29 is fixed so as to face the lower end portion 34, the spun yarn Y1 guided to this guide position A.
- the spun yarns Y1 and Y0 at the guide position A are prohibited from being overlapped with each other, and thus the spun yarn on the yarn reservoir 27 is prevented.
- a smooth unwinding of Y3 is realized.
- the inclination ⁇ of the lower end 34 on the first end 31 side is set larger than the inclination ⁇ of the upper end 35 on the second end 32 side. Accordingly, the spun yarn Y1 wound around the guide position A facing the lower end 34 on the first end 31 side on the outer periphery of the yarn reservoir 27 starts to move to the second end 32 side immediately after winding. However, if the inclination eventually reaches the upper end 35 and the inclination becomes gentle, this movement becomes difficult.
- the spun yarn Y ⁇ b> 2 that has already been wound on the outer periphery of the yarn reservoir 27 remains at the boundary between the lower end portion 34 and the upper end portion 35. Therefore, the spun yarn Y1 with the slight running force f1 remaining abuts on the spun yarn Y2, and the spun yarn Y2 and the spun yarn Y3 are moved toward the second end 32 as shown in FIG. 4C. As a result, the spun yarns Y1 to Y3 are densely arranged on the outer periphery of the yarn storage body 27, so that the spun yarn Y on the yarn storage body 27 can be smoothly unwound and highly stored. Quantity is realized at the same time.
- the control unit 9 performs a yarn break signal as shown in FIG. Is confirmed (S320), whether a yarn defect detection signal is received (S330), whether an empty bobbin signal is received (S340), and whether a storage amount upper limit signal is received is confirmed. (S350).
- the control unit 9 executes the control flow shown in FIG. 9 (S325) and then returns to the control flow of FIG.
- the control unit 9 executes the control flow shown in FIG. 11 (S335) and then returns to the control flow of FIG.
- an empty bobbin signal is received (S340: YES)
- the control flow shown in FIG. 12 is executed (S345), and then the control flow returns to the control flow of FIG.
- the storage amount M of the accumulator 7 increases, and when the storage amount M reaches 300 m,
- the upper limit sensor 55 transmits a storage amount upper limit signal to the control unit 9.
- the controller 9 when receiving the storage amount upper limit signal from the storage upper limit sensor 55 (S350: YES), the controller 9 changes the winding speed Vb from 1500 m / min to 1200 m / min (S360). Thereby, the winding speed Va and the winding speed Vb coincide with each other, and the storage amount M of the accumulator 7 becomes constant.
- control unit 9 executes a control flow (details will be described later) for preventing yarn deficiency shown in FIG. 10 in parallel with a known multitask technique (S400). Is stopped (S410). Next, the control unit 9 switches the electromagnetic valve 52 shown in FIG. 5 to the open state, so that the yarn reservoir is placed in the yarn path 28 of the winding arm 29 and the like as indicated by the thick arrows indicated by the symbols a and b. An air flow from the 27 side toward the upper relay pipe 18 side is formed (S420). At the same time, the control unit 9 operates the clamp unit 18c by slightly rotating the upper relay pipe 18 shown in FIG. 5 to switch the suction port 18b from the closed state to the open state.
- the drawing sensor 54 transmits a drawing detection signal to the control unit 9.
- the control unit 9 turns the upper relay pipe 18 slightly while continuing the low speed rotation of the winding arm 29.
- the clamp part 18c By operating the clamp part 18c, the suction port 18b is switched from the open state to the closed state, the spun yarn Y is clamped by the clamp part 18c, and the upper relay pipe 18 is further swung from the top to the bottom.
- the spun yarn Y drawn from 7 is guided to the yarn joining execution part 17 of the yarn joining part 6 located on the yarn feeding part 3 side from the accumulator 7 (S450).
- the spun yarn Y is newly pulled out from the accumulator 7 by approximately 60 cm as the upper relay pipe 18 turns. At this time, the spun yarn Y is threaded between the clamp portion 18c and the yarn reservoir 27.
- the control unit 9 synchronizes the turning of the upper relay pipe 18 with the rotation of the winding arm 29 so as not to be cut.
- the control unit 9 stops the rotation of the winding arm 29 (S460).
- the control unit 9 drives the splicer motor 23 shown in FIG.
- the yarn splicing operation by the execution unit 17 is executed (S470).
- the controller 9 starts the clockwise rotation of the winding arm 29 as shown in FIG. 2 (S480), and returns from the thread breakage state of FIG. 5 to the normal winding state of FIG. S490).
- the rotation speed of the winding arm 29 at this time is set so that the winding speed Vb is 1500 m / min (S480).
- the control unit 9 executes the control flow shown in FIG. 11 (S335). That is, the control unit 9 executes the control flow for preventing yarn deficiency shown in FIG. 10 in parallel with a known multitasking technique (S500), stops the rotation of the winding arm 29 (S530), and performs the yarn Similarly to the time of cutting, the electromagnetic valve 52 and the upper pipe motor 21 are controlled to form an air flow in the yarn path 28 and the like as indicated by the thick arrows indicated by symbols a, b, c, and d in FIG. 5 (S540). ).
- the winding arm motor control unit 61 controls the winding arm motor 30 so that the winding arm 29 rotates at a low speed in a direction opposite to that at the time of storage, that is, counterclockwise in plan view in FIG. (S550), and a reception waiting state for the extraction detection signal from the extraction sensor 54 is entered (S560: NO). Then, the yarn end of the spun yarn Y existing on the lower end 34 is sucked into the opening 43 of the winding arm 29, and the upper relay pipe is passed through the yarn path 28 of the winding arm 29 as shown in FIG. 18 suction ports 18b. At this time, since the spun yarn Y passes through the drawing sensor 54, the drawing sensor 54 transmits a drawing detection signal to the control unit 9. As shown in FIG.
- the withdrawal yarn length calculation unit 63 is detected by the rotary encoder 53 from the time when the withdrawal sensor 54 detects the spun yarn Y.
- the rotation angle of the winding arm 29 is acquired (S570), and the drawn yarn length is calculated based on the rotation angle (S580).
- the upper pipe control unit 64 compares the length of the yarn defect acquired from the yarn defect detection signal with the drawn yarn length calculated by the drawn yarn length calculating unit 63 (S590). Then, the upper pipe control unit 64 waits until the drawn yarn length reaches the yarn defect length (S590: NO), and when it reaches as shown in FIG. 7 (S590: YES), the control unit 9 performs winding.
- the clamp portion 18c is operated by slightly turning the upper relay pipe 18 to switch the suction port 18b from the open state to the closed state, and the spun yarn Y is clamped by the clamp portion 18c. Then, the spliced yarn Y drawn from the accumulator 7 is guided to the yarn joining execution unit 17 of the yarn joining unit 6 by further turning the upper relay pipe 18 from top to bottom (S600).
- a two-dot chain line indicated by a symbol Y6 in FIG. 7 is an image of a spun yarn having a yarn defect. At this time, the spun yarn Y is newly pulled out from the accumulator 7 by approximately 60 cm as the upper relay pipe 18 turns.
- the spun yarn Y is threaded between the clamp portion 18c and the yarn reservoir 27.
- the control unit 9 synchronizes the turning of the upper relay pipe 18 with the rotation of the winding arm 29 so as not to be cut.
- the control unit 9 stops the rotation of the winding arm 29 (S610).
- the lower relay pipe 19 shown in FIG. 1 like the upper relay pipe 18, sucks and captures the yarn ends of the spun yarn Y existing around the yarn feeler 12, and uses the spun yarn Y as a yarn splicing execution unit.
- the control unit 9 drives the splicer motor 23 shown in FIG.
- the piecing operation by the execution unit 17 is executed (S620).
- the controller 9 starts the clockwise rotation of the winding arm 29 as shown in FIG. 2 (S630), and returns from the thread breakage state of FIG. 5 to the normal winding state of FIG. S640).
- the rotation speed of the winding arm 29 at this time is set so that the winding speed Vb is 1500 m / min (S630).
- the winding arm motor control unit 61 controls the winding arm motor 30 so that the winding arm 29 rotates at a low speed in a direction opposite to that at the time of storage, that is, counterclockwise in plan view in FIG. (S740), and a reception waiting state for the extraction detection signal from the extraction sensor 54 is entered (S750: NO). Then, the yarn end of the spun yarn Y existing on the lower end 34 is sucked into the opening 43 of the winding arm 29, and the upper relay pipe is passed through the yarn path 28 of the winding arm 29 as shown in FIG. 18 suction ports 18b. At this time, since the spun yarn Y passes through the drawing sensor 54, the drawing sensor 54 transmits a drawing detection signal to the control unit 9. As shown in FIG.
- the control unit 9 turns the upper relay pipe 18 slightly while continuing the low-speed rotation of the winding arm 29.
- the suction port 18b is switched from the open state to the closed state, the spun yarn Y is clamped by the clamp part 18c, and the upper relay pipe 18 is further swung from the top to the bottom.
- the spun yarn Y drawn from 7 is guided to the yarn joining execution unit 17 of the yarn joining unit 6 (S760). At this time, the spun yarn Y is newly pulled out from the accumulator 7 by approximately 60 cm as the upper relay pipe 18 turns. At this time, the spun yarn Y is threaded between the clamp portion 18c and the yarn reservoir 27.
- the control unit 9 synchronizes the turning of the upper relay pipe 18 with the rotation of the winding arm 29 so as not to be cut.
- the control unit 9 stops the rotation of the winding arm 29 (S770).
- the lower relay pipe 19 shown in FIG. 1 like the upper relay pipe 18, sucks and captures the yarn ends of the spun yarn Y existing around the yarn feeler 12, and uses the spun yarn Y as a yarn splicing execution unit. Guide to 17.
- the control unit 9 drives the splicer motor 23 shown in FIG.
- the piecing operation by the execution unit 17 is executed (S780).
- the control unit 9 starts the clockwise rotation of the winding arm 29 as shown in FIG. 2 (S790), and returns from the thread breakage state of FIG. 5 to the normal winding state of FIG. S800).
- the rotational speed of the winding arm 29 at this time is set so that the winding speed Vb is 1500 m / min (S790).
- the control unit 9 disturbs the yarn layer of the package P until the winding speed Va reaches 1200 m / min (S970: NO).
- the winding speed Va is increased gently, for example, by 100 m / min every 0.5 seconds (S980).
- the control unit 9 ends the control flow of FIG. 13 for preventing yarn deficiency (S990).
- the winding unit 2 is configured as follows, for example, as shown in FIG. That is, a yarn supplying unit 3 for unwinding and supplying the spun yarn Y from the yarn supplying bobbin B, a yarn clearer 4 capable of detecting a yarn defect of the spun yarn Y supplied from the yarn supplying unit 3, and the spun yarn A winding unit 5 for winding Y as a package P; and a yarn Y provided on the yarn feeding unit 3 side and a yarn spun on the winding unit 5 side provided between the yarn feeding unit 3 and the winding unit 5 A yarn joining portion 6 for joining Y.
- An accumulator 7 capable of storing the spun yarn Y between the yarn joining portion 6 and the winding portion 5 in an amount more than the amount of yarn wound around the winding portion 5 during the yarn joining by the yarn joining portion 6;
- a yarn end pulling mechanism W for pulling out the yarn end of the spun yarn Y wound in the accumulator 7 to the yarn joining portion 6 side (yarn supplying portion 3 side) when the yarn joining portion 6 performs the yarn joining; It was.
- the accumulator 7 capable of storing the spun yarn Y having a sufficient amount of yarn so that the winding of the spun yarn Y by the winding unit 5 can be continued even during the splicing by the yarn splicing unit 6.
- the spun yarn Y by the winding portion 5 is also used when the yarn feeding bobbin is changed when the bobbin is changed, when the yarn is cut, or when the yarn is broken. It becomes possible to continue winding.
- the spun yarn Y can be continuously supplied from the accumulator 7 to the winding unit 5 at the time of piecing, and the above-mentioned “spun yarn Y on the winding unit 5 side” is shown in FIG.
- the yarn end pulling mechanism W may be pulled out from the accumulator 7. Therefore, the problem that the yarn layer of the package P is disturbed by repeating the forward rotation, the rotation stop, and the reverse rotation of the package P in order to pull out the spun yarn Y from the package P is solved. Since the yarn end of the spun yarn Y on the winding unit 5 side stays in the accumulator 7, the special operation described above by the operator is not required.
- said winding unit 2 is further comprised as follows. That is, the yarn end drawing mechanism W pulls the yarn end of the yarn Y wound around the yarn storage body 27 by the air flow toward the yarn supplying unit 3 side. According to the above configuration, since the yarn end is pulled out by the air flow, the yarn end can be pulled out without damaging other yarns.
- said winding unit 2 is further comprised as follows. That is, the yarn end drawing mechanism W has a yarn path through which the yarn Y can travel, and includes a yarn guide portion that guides the yarn Y on the yarn supply portion 3 side to a predetermined winding position of the yarn reservoir 27. ing. According to the above configuration, the yarn pulling mechanism W is integrally provided with the yarn guiding portion, so that the yarn guiding operation at the time of winding the yarn and the yarn drawing operation at the time of the yarn splicing operation can be performed at an optimum place. .
- said winding unit 2 is further comprised as follows. That is, the accumulator 7 has a yarn reservoir 27 around which the spun yarn Y is wound on the outer periphery, and a yarn path 28 through which the spun yarn Y can travel, and is rotatable around the axis C of the yarn reservoir 27.
- a winding arm 29 for guiding the spun yarn Y on the yarn feeding section 3 side on the outer periphery of the yarn storage body 27, and the yarn joining section 6 from the yarn storage body 27 side to the winding arm 29.
- An air flow generation unit X for generating an air flow flowing toward the side.
- the yarn end drawing mechanism W is configured to include the winding arm 29 and the airflow generation part X.
- the yarn end of the spun yarn Y on the outer periphery of the yarn reservoir 27 is moved into the yarn path 28 of the winding arm 29 by the air flow when the yarn joining is performed by the yarn joining portion 6. It is sucked and pulled out toward the yarn joining portion 6 side.
- the winding arm 29 has a role of guiding the spun yarn Y on the yarn feeding section 3 side on the outer periphery of the yarn reservoir 27 and a role of constituting a part of the yarn end drawing mechanism W.
- the spun yarn Y is already set on the yarn path at the time of yarn storage when the yarn joining is completed. After yarn joining, yarn storage can be resumed promptly.
- said winding unit 2 is further comprised as follows. That is, the accumulator 7 further includes a winding arm motor 30 that rotates the winding arm 29 around the axis C of the yarn storage body 27. When the yarn end of the spun yarn Y on the outer periphery of the yarn storage body 27 is drawn out to the yarn joining portion 6 side by the yarn end drawing mechanism W, the winding arm 29 rotates in the direction opposite to that during storage. Further, a winding arm motor control unit 61 for controlling the winding arm motor 30 is further provided. According to the above configuration, the yarn end of the spun yarn Y on the outer periphery of the yarn reservoir 27 is more easily sucked into the yarn path 28 of the winding arm 29.
- said winding unit 2 is further comprised as follows. That is, the accumulator 7 has a yarn amount that the winding unit 5 winds at a normal winding speed Va from the start of the bobbin change of the yarn feeding bobbin B until the yarn joining unit 6 completes the yarn joining.
- the above yarn amount is configured to be stored. According to the above configuration, the winding unit 5 winds at the normal winding speed Va from the start of the bobbin change of the yarn feeding bobbin B until the yarn joining unit 6 completes the yarn joining. Can continue. Therefore, a highly productive winding unit 2 is realized.
- the accumulator 7 is configured to be capable of storing a yarn amount of 120 [m]. Note that the accumulator 7 according to this embodiment for the spun yarn of the cotton count 30 is configured to be able to store a yarn amount of 300 m.
- said winding unit 2 is further comprised as follows. That is, the accumulator 7 is configured so that the winding section is operated at a normal winding speed Va from the time of yarn cutting performed when a yarn defect is detected by the yarn clearer 4 until the yarn joining section 6 completes the yarn joining. 5 is configured to be able to store a yarn amount equal to or greater than the yarn amount to be wound. According to the above configuration, normal winding by the winding unit 5 from the time of yarn cutting performed when the yarn defecter 4 detects a yarn defect until the yarn joining unit 6 completes the yarn joining. The winding at the speed Va can be continued. Therefore, a highly productive winding unit 2 is realized.
- a normal winding speed Va by the winding unit 5 is 1200 [m / min], and 3 [sec] from the time of the yarn cutting until the yarn joining unit 6 completes the yarn joining.
- the accumulator 7 is configured to be able to store a yarn amount of 60 [m].
- the accumulator 7 according to this embodiment for the spun yarn of the cotton count 30 is configured to be able to store a yarn amount of 300 m.
- said winding unit 2 is further comprised as follows. That is, the accumulator 7 can store a yarn amount that is greater than or equal to the amount of yarn wound by the winding unit 5 at a normal winding speed Va from the time when the yarn breaks until the yarn joining unit 6 completes the yarn joining. Composed. According to the above configuration, the winding at the normal winding speed Va by the winding unit 5 can be continued from the time when the yarn breaks until the yarn joining unit 6 completes the yarn joining. Therefore, a highly productive winding unit 2 is realized.
- the normal winding speed Va by the winding unit 5 is 1200 [m / min], and 3 [sec] is required from the time of the yarn breakage until the yarn joining unit 6 completes the yarn joining.
- the accumulator 7 is configured to be able to store a yarn amount of 60 [m]. In the above-described embodiment for the spun yarn of the cotton count 30, the accumulator 7 is configured to be able to store a yarn amount of 300 m.
- said winding unit 2 is further comprised as follows. That is, for example, as shown in S310 of FIG. 8, the accumulator 7 is spun at a yarn speed (winding speed Vb) faster than the normal winding speed Va when the winding unit 5 winds the spun yarn Y.
- the yarn Y can be stored. That is, at the time of yarn joining by the yarn joining portion 6, the storage of the spun yarn Y by the accumulator 7 is interrupted, and the spun yarn Y stored in the accumulator 7 is taken up by the winding portion 5, whereby the accumulator 7, the amount M of the spun yarn Y stored temporarily decreases.
- the storage amount M can be recovered to the level before the interruption. Therefore, the storage amount M of the spun yarn Y by the accumulator 7 can be kept to the minimum necessary (for example, three times of yarn splicing), so that a compact accumulator 7 is realized.
- said winding unit 2 is further comprised as follows. That is, for example, as shown in FIGS. 2 and 3, the accumulator 7 includes a storage amount detection unit (a storage upper limit sensor 55, a storage lower limit sensor 56, and a storage lower limit sensor 57) that detects the storage amount M of the spun yarn Y.
- a storage amount detection unit a storage upper limit sensor 55, a storage lower limit sensor 56, and a storage lower limit sensor 57
- the traverse drum motor reduces the winding speed Va at which the winding unit 5 winds the spun yarn Y.
- a control unit 60 is further provided. According to the above configuration, the storage amount M of the spun yarn Y in the accumulator 7 can be avoided from being exhausted with simple control.
- said winding unit 2 is further comprised as follows. That is, the traverse drum motor control unit 60 gently decelerates the winding speed Va to such an extent that no disturbance occurs in the yarn layer of the package P as shown in FIG. That is, when the winding speed Va is reduced, the yarn layer of the package P may be disturbed depending on the mode of the reduction. Therefore, by configuring the traverse drum motor control unit 60 as described above, it is possible to prevent the yarn layer of the package P from being disturbed.
- said winding unit 2 is further comprised as follows. That is, for example, as shown in FIG. 2, the yarn reservoir 27 has a first end 31 on the yarn feeding section 3 side and a second end 32 on the winding section 5 side. The outer periphery is tapered toward the second end 32.
- the winding arm 29 guides the spun yarn Y on the yarn feeding section 3 side to the first end 31 side on the outer periphery of the yarn reservoir 27.
- the spun yarn Y on the yarn supplying section 3 side is wound around the first end 31 side on the outer periphery of the yarn reservoir 27, and the wound spun yarn Y is shown in FIG.
- said winding unit 2 is further comprised as follows. That is, for example, as shown in FIG. 4, the inclination ⁇ on the first end 31 side of the outer periphery of the yarn storage body 27 is set larger than the inclination ⁇ on the second end 32 side.
- the spun yarn Y wound around the first end 31 side on the outer periphery of the yarn reservoir 27 starts to move immediately toward the second end 32 immediately after winding, and then inclines. This will be difficult to move when the is loose.
- the spun yarn Y is densely arranged on the outer periphery of the yarn reservoir 27, so that smooth unwinding of the spun yarn Y on the yarn reservoir 27 and a high storage amount can be realized at the same time. Is done.
- the winding unit 2 is comprised as follows. That is, an accumulator 7 capable of storing the spun yarn Y between the yarn joining portion 6 and the winding portion 5 is provided. A yarn end drawing mechanism W for drawing the yarn end of the spun yarn Y wound around the accumulator 7 to the yarn joining portion 6 side at the time of yarn joining by the yarn joining portion 6 is provided. A pull-out sensor 54 that can detect that the yarn end of the spun yarn Y wound around the accumulator 7 is actually pulled out to the yarn joining portion 6 side by the yarn end pull-out mechanism W is further provided.
- the pulling out by the yarn end pulling mechanism W is made successful by considering a time margin.
- the pull-out sensor 54 it is possible to know that the pull-out by the yarn end pull-out mechanism W has been successful, so that the yarn end of the spun yarn Y is transferred from the accumulator 7 to the yarn. The time required for pulling out to the joint 6 side can be shortened.
- the above-described effects are also exhibited in a chained manner as follows. That is, if the time required for the above drawing is shortened, the time for interrupting the storage of the spun yarn Y by the accumulator 7 can be shortened. In this respect, the accumulator 7 stores the spun yarn Y by one yarn splicing. Consumption of the storage amount M of the spun yarn Y can be suppressed. Therefore, it becomes easy to avoid the lack of the spun yarn Y of the accumulator 7 at the time of yarn joining. In addition, there is room for adopting a compact accumulator 7 with a small storage amount of spun yarn Y that can be stored, which greatly contributes to the compactness of the winding unit 2 itself.
- said winding unit 2 is further comprised as follows. That is, for example, as shown in FIG. 2, the drawer sensor 54 is provided in the accumulator 7. By providing the pull-out sensor 54 in the accumulator 7 in this way, the yarn end of the spun yarn Y stored in the accumulator 7 is pulled out to the yarn joining portion 6 side by the yarn end pull-out mechanism W. This yarn end can be detected immediately before it is actually delivered to the yarn joining portion 6.
- said winding unit 2 is further comprised as follows. That is, the accumulator 7 has a yarn reservoir 27 around which the spun yarn Y is wound on the outer periphery, and a yarn path 28 through which the spun yarn Y can travel, and is rotatable around the axis C of the yarn reservoir 27.
- the winding arm 29 for guiding the spun yarn Y on the yarn supplying section 3 on the outer periphery of the yarn storage body 27, and the winding arm 29 are rotated about the axis C of the yarn storage body 27.
- a winding arm motor 30 is provided to rotated about the axis C of the yarn storage body 27.
- the yarn end drawing mechanism W rotates the winding arm 29 in a direction opposite to that during storage, and the spun yarn Y on the outer periphery of the yarn storage body 27 is passed through the yarn path 28 of the winding arm 29 through the yarn. It is comprised so that it may pull out to the joint part 6 side.
- a rotary encoder 53 capable of detecting the rotation angle of the winding arm 29 is provided. Based on the rotation angle of the winding arm 29 detected by the rotary encoder 53 from the time when the drawing sensor 54 detects the spun yarn Y, the yarn end pulling mechanism W moves from the accumulator 7 to the yarn joining portion 6 side.
- a drawn yarn length calculation unit 63 that calculates the yarn length of the drawn spun yarn Y is further provided.
- a desired yarn length can be drawn out of the spun yarn Y on the outer periphery of the yarn reservoir 27 without excess or deficiency. Therefore, for example, as shown in FIG. 11, it is possible to pull out from the yarn reservoir 27 by the yarn length corresponding to the yarn defect length detected by the yarn clearer 4.
- the unwinding tension of the yarn feeding bobbin 21 is arranged by disposing the accumulator 7 between the yarn feeding bobbin B and the winding unit 5 to cut off the transmission of the tension of the yarn Y. It is possible to prevent the tension variation due to the traverse variation of the winding unit 5 from being transmitted to the portion. Further, by attaching the unwinding assisting device 11 to the yarn supplying bobbin B, the yarn unwinding from the yarn supplying bobbin B can be stably performed. The unwinding speed can be increased. Therefore, the unwinding efficiency from the yarn feeding bobbin B can be improved.
- the above-described yarn winding device is further configured as follows.
- the yarn feeding unit 3 lowers the regulating member that covers the core tube of the yarn feeding bobbin B in conjunction with the yarn Y unwinding from the yarn feeding bobbin B, thereby releasing the yarn Y from the yarn feeding bobbin B.
- a yarn unwinding assisting device 11 for assisting wrinkles is provided.
- the accumulator 7 is disposed between the yarn supplying bobbin B and the winding unit 3 to interrupt the transmission of the yarn tension, so that the winding portion traverse of the winding unit is provided on the unwinding tension portion of the yarn supplying bobbin B.
- the unwinding assisting device 11 attaching the unwinding assisting device 11 to the yarn feeding bobbin B, the yarn unwinding from the yarn feeding bobbin B can be performed stably, so that the yarn breakage is prevented and the unwinding speed from the yarn feeding bobbin is increased. Can be fast. Therefore, the unwinding efficiency from the yarn feeding bobbin B can be improved.
- the drawer sensor 54 is provided in the accumulator 7 as shown in FIG.
- the drawer sensor 54 is provided on the upper intermediate pipe 18 of the yarn joining section 6.
- the winding unit 2 is configured as follows. That is, the drawer sensor 54 is provided in the yarn joining portion 6. According to such an arrangement, the drawing sensor 54 can detect that the yarn end of the spun yarn Y stored in the accumulator 7 has been drawn to the yarn joining portion 6 side by the yarn end drawing mechanism W. In addition, it is also possible to detect that the normal delivery of the spun yarn Y from the yarn end drawing mechanism W to the yarn joining portion 6 has been performed.
- said winding unit 2 is further comprised as follows. That is, the yarn joining unit 6 includes a yarn joining execution unit 17 that performs a yarn joining operation between the spun yarn Y on the yarn feeding unit 3 side and the spun yarn Y on the winding unit 5 side, and the winding unit 5. And an upper intermediate pipe 18 that receives the spun yarn Y on the side from the yarn end drawing mechanism W and sets the spun yarn Y in the yarn joining execution unit 17.
- the drawer sensor 54 is provided on the upper relay pipe 18. Thus, it is reasonable to provide the pull-out sensor 54 on the member that receives the spun yarn Y among the members that constitute the yarn splicing portion 6.
- the drawer sensor 54 is provided in the accumulator 7 as shown in FIG.
- the above-described yarn clearer 4 is used as the drawer sensor 54.
- the upper relay pipe 18 receives the yarn end of the spun yarn Y from the yarn end drawing mechanism W, and the upper relay pipe 18 turns from top to bottom as shown in FIG.
- the yarn clearer 4 detects the presence of the spun yarn Y on the winding unit 5 side. It is possible.
- the yarn path of the spun yarn Y between the yarn joining execution unit 17 and the accumulator 7 during normal winding, and the yarn path of the spun yarn Y between the yarn joining execution unit 17 and the accumulator 7 during yarn joining are: , Has become a duplicate relationship. Accordingly, whether or not the yarn end drawing mechanism W has tried to draw out the yarn end of the spun yarn Y wound around the outer periphery of the yarn storage body 27 for a predetermined time and has succeeded in drawing out the spun yarn Y from the accumulator 7. Regardless, if the upper relay pipe 18 is swung, the yarn end of the spun yarn Y stored in the accumulator 7 is actually threaded by the yarn end drawing mechanism W by monitoring the output signal of the yarn clearer 4. It is possible to detect whether or not the part 6 is pulled out.
- the winding unit 2 is configured as follows. That is, when the yarn joining by the yarn joining portion 6 is performed, the presence of the spun yarn Y on the winding portion 5 side can be detected by the yarn clearer 4.
- the yarn clearer 4 is used as the drawer sensor 54.
- the upper end portion on the second end side of the yarn reservoir is provided with the inclination ⁇ .
- the upper end portion on the second end side of the yarn storage body according to the present embodiment is not inclined.
- the yarn storage body according to the present embodiment is arranged in a radial direction of a plurality of beam members arranged at predetermined intervals on the circumference and a yarn storage body arranged between a pair of adjacent beam members. And an oscillating member that can freely move back and forth.
- the swing member includes a swing mechanism including, for example, an eccentric cam and a cam motor.
- the conveying unit that forcibly conveys the spun yarn Y wound on the outer periphery of the yarn reservoir from the first end toward the second end is arranged at a predetermined interval on the circumference.
- a swinging member which is arranged between a pair of adjacent beam members and can be moved forward and backward in the radial direction of the yarn reservoir, and the swinging member is in the above-mentioned operating state and non-operating state.
- a swing mechanism that swings back and forth between the states.
- the winding unit is configured as follows. That is, the yarn storage body has a first end on the yarn feeding unit side and a second end on the winding unit side.
- the accumulator further includes a transport unit that forcibly transports the spun yarn Y wound around the outer periphery of the yarn reservoir from the first end toward the second end.
- the winding arm guides the spun yarn Y on the yarn supplying section side to the first end side on the outer periphery of the yarn storage body.
- the spun yarn Y is wound around the first end on the outer periphery of the yarn reservoir, and the spun yarn Y is wound on the outer periphery of the yarn reservoir on the first end. To the second end side. Therefore, overlapping of the spun yarn Y at the guide position of the spun yarn Y by the winding arm is prohibited, and smooth unwinding of the spun yarn Y on the yarn reservoir is realized.
- the bundle Y2 of the spun yarn Y on the upper end portion of the yarn reservoir is conveyed toward the second end side while keeping the distance between the adjacent spun yarns Y constant. Therefore, in this respect, it becomes possible to more accurately detect the storage amount M of the spun yarn Y of the accumulator.
- an accumulator 161 is provided instead of the accumulator 7 in the first embodiment.
- the accumulator 161 includes six rollers 171 as a yarn storage body, a base material 172, a rotating plate 173, three winding auxiliary members 174, a winding arm 29 and a winding arm motor 30 similar to the accumulator 7. Have.
- the base material 172 is a substantially circular plate-like body, and is supported on the tip (upper end) of the output shaft 36 of the winding arm motor 30 via a bearing (not shown), and is disposed on the upper surface of the first magnet support 137.
- the six rollers 171 are arranged on the upper surface of the base material 72 along a circumference (a circumferential direction of the virtual circumference, hereinafter referred to as a virtual circumferential direction), and a lower end thereof pivots on the upper surface of the base material 172. While being supported, the upper end thereof is supported by the rotating plate 173.
- the rotation plate 173 is rotatable about the rotation axis C of the winding arm motor 76.
- the rotating plate 173 is provided with a rubber ring 181 so as to surround the outer peripheral surface thereof, and the yarn Y wound around the roller 171 passes through a gap between the rotating plate 173 and the rubber ring 181. Then, it is conveyed toward the winding unit 5.
- a pulley 182 is attached to the lower surface of the roller 171.
- the pulley 182 is a pulley connected to the speed reducer 177 and a speed reducer 177 that transmits the rotation of the winding arm motor 30 with a predetermined reduction ratio.
- the winding arm motor 30 also serves as a roller driving motor for rotating the roller 171.
- all of the rollers 171 may be driving rollers rotated by the winding arm motor 30, or only some of the rollers 171 are driving rollers, and the other rollers are driven rollers. There may be.
- the three winding auxiliary members 174 are attached to the substrate 172 so as to be separated from each other by about 120 ° so as to surround the lower end portion of the roller 171.
- the winding auxiliary member 174 has a winding auxiliary surface 174 a for smoothly connecting the outer peripheral surfaces of the rollers 171 at a portion located between the adjacent rollers 171.
- the auxiliary surface 174a forms a surface extending substantially continuously along the circumferential direction. Further, the winding auxiliary surface 174a is inclined so that the upper part is located on the inner side in the radial direction.
- the rollers 171 are spaced apart from each other, but as described above, the winding auxiliary member 174 is disposed so as to surround the lower end portion of the roller 171, and the lower end portion of the roller 171 is wound around the lower end portion. Since the auxiliary surface 174a forms a surface extending substantially continuously along the circumferential direction, the yarn Y is wound across the roller 171 and the winding auxiliary surface 174a. Therefore, the yarn Y can be smoothly wound around the roller 171.
- the roller 171 also rotates, and the yarn Y wound around the roller 171 by the winding arm 29 is conveyed by the roller 171.
- the yarn Y conveyed to the roller 171 moves upward (feeding direction).
- the yarn Y moves upward by being conveyed to the roller 171, so that a load (frictional force) applied to the yarn Y is reduced.
- the yarn Y is transported on the roller 171 and the fluff of the yarn Y is laid down.
- the yarn Y wound around the lower end portion of the roller 171 and the winding auxiliary member 174 moves upward by the rotation of the roller 171, and the winding of the winding auxiliary member 174 is also performed. It moves upward along the inclination of the auxiliary surface 174a.
- the winding unit 2 is configured as follows. That is, the accumulator 161 includes a plurality of rollers 171, a yarn winding mechanism that winds the yarn Y around the plurality of rollers 171, and a winding arm as a roller driving motor that rotates at least one of the plurality of rollers 171 as a driving roller.
- a plurality of rollers 171 are arranged so as to be rotatable side by side so that the axes thereof are positioned on the virtual circumference, and the rotation axes of the respective rollers 171 are arranged in the circumferential direction of the virtual circumference. It is arranged at an angle.
- the spun yarn wound around the roller 171 by the yarn winding mechanism is sequentially conveyed. Move in the feed direction. At this time, since the yarn Y is conveyed by the roller 171, the load (frictional force) applied to the yarn Y is small, and the deterioration of the quality of the yarn Y is reduced.
- an accumulator 261 is provided instead of the accumulator 7 in the first embodiment.
- the accumulator 261 includes a rotary storage drum 271, a rotary storage drum motor 272, a yarn guide member 273, a blow-down nozzle 274, a yarn path forming member 275, and the like.
- the rotary storage drum 271 is a drum that is rotated around the axis E by the rotary storage drum motor 272, and both end portions thereof are tapered portions 271a whose diameters become smaller toward the opposite end portions, respectively.
- a portion between the tapered portion 271a and the tapered portion 271b is a straight portion 271c having a substantially constant diameter.
- the yarn guide member 273 is a pipe extending linearly, and is arranged so that the upper left end portion in FIG. 16 faces the tapered portion 271a. As a result, the yarn Y that has traveled from the yarn supplying portion 3 side to the yarn guide member 273 is guided to the taper portion 271a by the yarn guide member 273.
- the blow-down nozzle 274 is attached to the right end of the yarn guide member 273.
- the blow-down nozzle 274 has a configuration similar to that of the blow-down nozzle 74 (see FIG. 2), and is similar to the yarn flow path 246 and the blow-down flow path 47 (see FIG. 2). 2), a downflow passage 247 to which a pressure air source 51 is connected via connection pipes 49 and 50 is provided.
- the upper left end portion of the yarn channel 246 in the drawing is connected to the internal space of the yarn guide member 273.
- the yarn path forming member 275 forms the yarn path 228, and is disposed between the suction port 18b of the upper thread guide pipe 18 and the blow-down nozzle 274.
- the yarn path 228 extends almost directly from its lower end located immediately above the suction port 18b of the upper yarn guide pipe 18, and at its upper end, bends to the upper left in FIG. Is opposed to the lower right end of the yarn channel 246.
- a yarn withdrawal sensor 54 is provided at the lower end of the yarn path forming member 275.
- the yarn Y is guided to the taper portion 271a by the yarn guide member 273, the yarn Y is wound around the taper portion 271a by the rotation of the rotary storage drum 271 and along the slope of the taper portion 271a. By moving to the upper right, it is stored in the rotary storage drum 271.
- the yarn Y is stored in the rotary storage drum 271 only by guiding Y to one point of the tapered portion 271a. Therefore, the yarn guide member 273 is threaded at one point of the tapered portion 271a. Any device that can guide Y can be used, and can be arranged relatively easily regardless of the position and orientation of the rotary storage drum 271. Therefore, the rotary storage drum 271 can be arranged relatively freely according to the empty space of the winding unit 2 and the like.
- the solenoid valve 52 is switched to the open state, so that the inner space of the yarn guide member 273, the yarn path 228, etc. An air flow toward the yarn guide pipe 18 is formed, and the rotary storage drum 271 is rotated in the direction opposite to that when the yarn Y is wound, so that the yarn end of the yarn Y existing on the rotary storage drum 271 becomes the yarn It is sucked into the opening of the guide member 273 and pulled out to the suction port 18b of the upper thread guide pipe 18 via the thread path 228 and the like.
- the moving direction of the yarn Y guided from the yarn guide member 273 to the rotary storage drum 71 is the rotational storage drum.
- the direction is from the upper right end side toward the lower left end side. Therefore, the yarn Y guided by the tapered portion 271a does not move to the upper right end side of the rotary storage drum 271 due to inertia when the yarn Y moves from the yarn guide member 273 to the rotary storage drum 271.
- the yarn end of the yarn Y surely comes near the taper portion 271a of the rotary storage drum 271 and, strictly speaking, on the left lower end portion of the straight portion 271c.
- the yarn Y can be reliably sucked from the opening of the yarn guide member 273.
- the winding unit 2 is configured as follows. That is, when the accumulator 261 rotates, the rotation storage drum 271 around which the yarn Y is wound, the motor 272 that rotates the rotation storage drum 271 in both directions, and the rotation storage drum 271, the yarn Y from the yarn supplying section 3 side. A yarn guide member 273 for guiding. According to the above configuration, at the time of yarn joining, the yarn Y wound around the rotary storage drum 271 can be pulled out to the yarn supplying unit 3 side by rotating the rotary storage drum 271 in the reverse direction to the time when the yarn Y is wound. .
- the conveying unit is disposed between a plurality of beam members arranged at predetermined intervals on the circumference and a pair of adjacent beam members, and can advance and retreat in the radial direction of the yarn reservoir. And a swing mechanism that swings the swing member back and forth between the operating state and the non-operating state.
- the conveying section may be provided between a pair of adjacent beam members and provided with a belt body that travels along the longitudinal direction of the beam members.
- the drawer sensor 54 is provided on the upper relay pipe 18. However, instead of this, the drawer sensor 54 may be provided between the accumulator 7 and the yarn joining portion 6.
- the downstream spun yarn Y is wound around the yarn reservoir 27 when the yarn breaks, when the yarn defect is detected, or when the bobbin is changed.
- the occurrence is detected in advance, and the driving of the winding arm 29 is stopped before the downstream spun yarn Y is completely wound around the yarn reservoir 27.
- the cutter 4a cuts the spun yarn Y and simultaneously stops the winding arm 29 from being driven.
- a sensor for detecting the remaining yarn amount of the yarn feeding bobbin B is attached to the yarn unwinding assist device 11 to monitor the remaining yarn amount of the yarn feeding bobbin B. Further, it is possible to implement a mode in which the occurrence of the empty state of the yarn supplying bobbin B is detected in advance and the driving of the winding arm 29 is stopped before all the downstream spun yarn Y is wound around the yarn reservoir 27.
- the upper intermediate pipe 18 can catch the yarn end that hangs downward from the accumulator 7, and therefore the drawing process of the spun yarn Y by the yarn end drawing mechanism W can be reduced, and the piecing operation is performed. Increases efficiency.
- the withdrawal sensor 54 is provided at the lower end of the blow-down nozzle 48, the yarn end of the spun yarn Y stored in the accumulator 7 is stopped at a position where it can be received by the upper relay pipe 18. That is, it is possible to detect a state in which the yarn end is reliably stopped in a state where the yarn end hangs below the accumulator 7. Accordingly, it is possible to shorten the time required to draw the yarn end of the spun yarn Y from the yarn accumulating portion to the yarn joining portion.
- the yarn end drawing mechanism W sucks the yarn end of the spun yarn Y stored in the accumulator 7 by the air flow formed in the winding arm 29 by the air flow generation unit X,
- the yarn end drawing mechanism W is not limited to this, and the yarn end drawing mechanism W is not limited to this, and the spun yarn Y stored in the accumulator 7 with an operable arm member such as a robot arm. It is also possible to grab the yarn end.
Abstract
Description
以下、図面を参照しつつ、本願発明の第一実施形態に係る糸巻取装置について説明する。オートワインダ1(繊維機械)は、図1に示す巻取ユニット2(糸巻取装置)を紙面左右方向に例えば60錘など多数で並べて構成されている。
図1に示すオートワインダ1のオペレータは、給糸ボビンBから紡績糸Yを解舒して、この紡績糸Yを糸解舒補助装置11、ヤーンフィーラ12、ヤーンクリアラ4、アキュムレータ7、ゲート式テンサー25、ワキシング装置26にセットし、巻取ボビンBfに固定する。アキュムレータ7における紡績糸Yの糸道は、図2に示す通りである。即ち、オペレータは、紡績糸Yを、引出センサ54と、吹下ノズル48の糸流路46と、出力軸36の流路44と、巻付アーム29の糸経路28と、に順に通す。この状態で、オペレータは、巻付アーム29の開口43側で紡績糸Yを引き出して、糸貯留体27に例えば5~20回程度、巻き付け、ワキシング装置26にセットする。なお、図2における紡績糸Yは説明の都合上、太く描かれているが、実際には糸貯留体27上には常時、600巻きくらいの紡績糸Yの束が貯留されるようになっている。
この状態で、図8に示すように巻取ユニット2の電源を投入すると(S300)、制御部9は、巻取部5による紡績糸Yの巻取速度Vaが1200m/minとなるように綾振ドラム14の回転を開始させると共に、アキュムレータ7による紡績糸Yの巻付速度Vbが1500m/minとなるように巻付アーム29の回転を開始させる(S310)。すると、図1や図2に示すように、糸貯留体27の外周上に巻き付けられた紡績糸Yの束は、上端から順に巻取部5によって解舒され、綾振ドラム14によって綾振られながらパッケージPに巻き取られていく。これと同時に、給糸部3側の紡績糸Yは、図2に示すように巻付アーム29によって糸貯留体27の下端部34に案内されると共に、巻付アーム29が糸貯留体27の軸Cまわりで平面視で時計回りに回転することで、糸貯留体27の第一端31側の下端部34に巻き付けられていく。詳しくは、図4(a)に示すように、巻付アーム29による紡績糸Y1の案内位置Aは下端部34と対向するように定められており、この案内位置Aに案内され、下端部34に巻き付いた紡績糸Y1には、符号Fで示す巻き付け力Fが糸貯留体27の軸Cに近づく方向に発生する。この巻き付け力Fは、下端部34の鋭い傾斜αとの係合によって符号f1で示す分力としての駆け上がり力f1を発生させ、この駆け上がり力f1によって紡績糸Y1は、図4(b)において太線矢印で示すように糸貯留体27の外周上を第一端31側から第二端32側へ向かって自発的に移動しようとする。従って、図4(c)に示すように、巻付アーム29による紡績糸Y1の案内位置Aが下端部34と対向するように固定されていても、この案内位置Aに案内された紡績糸Y1はその都度、第一端31側から第二端32側へ向かって移動するので、この案内位置Aにおける紡績糸Y1、Y0同士の重なりが禁止され、もって、糸貯留体27上での紡績糸Y3の円滑な解舒が実現されている。ここで、第一端31側の下端部34の傾斜αは、第二端32側の上端部35の傾斜βと比較して大きく設定されている。従って、糸貯留体27の外周上の前記第一端31側の下端部34に対向する案内位置Aに巻き付けられた紡績糸Y1は、巻き付け直後速やかに上記第二端32側へと移動を開始し、やがて上端部35に至って傾斜が緩くなると、この移動がし難くなる。一方、既に糸貯留体27の外周上に巻き付けられている紡績糸Y2は、下端部34と上端部35の境界に留まっている。従って、僅かな駆け上がり力f1が残された紡績糸Y1は、この紡績糸Y2に当接し、図4(c)に示すように紡績糸Y2と紡績糸Y3を第二端32側へ向かって押し上げ、この結果、紡績糸Y1~Y3は前記糸貯留体27の外周上に密に並べられることとなり、もって、前記糸貯留体27上での紡績糸Yの円滑な解舒性と、高い貯留量と、が同時に実現される。
紡績糸Yが図1に示すゲート式テンサー24で糸切れしたとする。この場合、ゲート式テンサー24よりも下流側の紡績糸Yは、すべて糸貯留体27に巻き付けられ、紡績糸Yの糸端は糸貯留体27の下端部34の外周上に巻き付けられた状態となる。これと同時に、ヤーンクリアラ4は糸切れを検出し、制御部9へ糸切れ信号を送信する。図8に示すように制御部9は、ヤーンクリアラ4から糸切れ信号を受信すると(S320:YES)、図9に示す制御フローを実行する(S325)。即ち、制御部9は、図10に示す糸欠乏防止のための制御フロー(詳しくは、後述する。)を公知のマルチタスク技術で並行して実行しつつ(S400)、先ず、巻付アーム29の回転を停止させる(S410)。次に、制御部9は、図5に示す電磁弁52を開状態へと切り替えることで、符号a及びbで示す太線矢印のように、巻付アーム29の糸経路28などに、糸貯留体27側から上側中継ぎパイプ18側へ向かう空気流を形成する(S420)。これと同時に、制御部9は、図5に示す上側中継ぎパイプ18を若干回動させることでクランプ部18cを操作して、吸引口18bを閉塞状態から開放状態へと切り替え、これにより、符号c及びdで示す太線矢印のように、上側中継ぎパイプ18に、吸引口18b側から負圧源20側へ向かう空気流を形成する(S420)。次に、巻付アームモータ制御部61は、巻付アーム29が貯留時とは逆方向に、即ち、図5で平面視で反時計回りに低速で回転するように巻付アームモータ30を制御し(S430)、引出センサ54からの引出検出信号の受信待ち状態となる(S440:NO)。すると、下端部34上に存在する紡績糸Yの糸端は、巻付アーム29の開口43に吸い込まれ、図6に示すように巻付アーム29の糸経路28などを経由して上側中継ぎパイプ18の吸引口18bに至る。このとき、紡績糸Yが引出センサ54を通過するので、引出センサ54は、制御部9に、引出検出信号を送信する。図9に示すように、引出センサ54から引出検出信号を受信すると(S440:YES)、制御部9は、巻付アーム29の低速回転を継続したまま、上側中継ぎパイプ18を若干旋回させることでクランプ部18cを操作して、吸引口18bを開放状態から閉塞状態へと切り替えると共にクランプ部18cによって紡績糸Yをクランプさせ、更に上から下へ向かって上側中継ぎパイプ18を旋回させることで、アキュムレータ7から引き出した紡績糸Yをアキュムレータ7よりも給糸部3側にある糸継部6の糸継実行部17に案内する(S450)。このとき、上側中継ぎパイプ18の旋回によってアキュムレータ7から紡績糸Yが概ね60cm程度、新たに引き出されることとなるが、このときに紡績糸Yがクランプ部18cと糸貯留体27との間で糸切れしないように、制御部9は、上側中継ぎパイプ18の旋回を巻付アーム29の回転と同期させる。上側中継ぎパイプ18による紡績糸Yの糸継実行部17への案内が完了したら(S450)、制御部9は、巻付アーム29の回転を停止させる(S460)。一方で、図1に示す下側中継ぎパイプ19は、上側中継ぎパイプ18と同様に、ヤーンフィーラ12の周辺に存在する紡績糸Yの糸端を吸引捕捉し、この紡績糸Yを糸継実行部17に案内する。そして、アキュムレータ7側の紡績糸Yと給糸部3側の紡績糸Yが糸継実行部17にセットされたら、制御部9は、図3に示すスプライサモータ23を駆動して、糸継実行部17による糸継ぎ作業を実行する(S470)。そして、制御部9は、図2に示すように巻付アーム29の平面視時計回りの回転を開始させ(S480)、図5の糸切れ状態から図2の通常巻取状態へと復帰する(S490)。なお、このときの巻付アーム29の回転数は、巻付速度Vbが1500m/minとなるように設定される(S480)。
図8に示す通常巻取時において、ヤーンクリアラ4から糸欠点検出信号を受信すると(S330:YES)、制御部9は、図11に示す制御フローを実行する(S335)。即ち、制御部9は、図10に示す糸欠乏防止のための制御フローを公知のマルチタスク技術で並行して実行しつつ(S500)、巻付アーム29の回転を停止させ(S530)、糸切れ時と同様に、電磁弁52や上パイプモータ21を制御して、図5の符号a及びb、c、dで示す太線矢印のように、糸経路28などに空気流を形成する(S540)。次に、巻付アームモータ制御部61は、巻付アーム29が貯留時とは逆方向に、即ち、図5で平面視で反時計回りに低速で回転するように巻付アームモータ30を制御し(S550)、引出センサ54からの引出検出信号の受信待ち状態となる(S560:NO)。すると、下端部34上に存在する紡績糸Yの糸端は、巻付アーム29の開口43に吸い込まれ、図6に示すように巻付アーム29の糸経路28などを経由して上側中継ぎパイプ18の吸引口18bに至る。このとき、紡績糸Yが引出センサ54を通過するので、引出センサ54は、制御部9に、引出検出信号を送信する。図11に示すように、引出センサ54から引出検出信号を受信すると(S560:YES)、引出糸長演算部63は、引出センサ54が紡績糸Yを検出した時点からの、ロータリエンコーダ53によって検出される前記巻付アーム29の回転角度を取得し(S570)、この回転角度に基づいて前記の引出糸長を演算する(S580)。そして、上パイプ制御部64は、糸欠点検出信号から取得した糸欠点の長さと、引出糸長演算部63によって演算された引出糸長と、を比較する(S590)。そして、上パイプ制御部64は、引出糸長が糸欠点長さに到達するまで待機し(S590:NO)、図7に示すように到達したら(S590:YES)、制御部9は、巻付アーム29の低速回転を継続したまま、上側中継ぎパイプ18を若干旋回させることでクランプ部18cを操作して、吸引口18bを開放状態から閉塞状態へと切り替えると共にクランプ部18cによって紡績糸Yをクランプさせ、更に上から下へ向かって上側中継ぎパイプ18を旋回させることで、アキュムレータ7から引き出した紡績糸Yを糸継部6の糸継実行部17に案内する(S600)。図7の符号Y6で示す二点鎖線は、糸欠点のある紡績糸をイメージしたものである。このとき、上側中継ぎパイプ18の旋回によってアキュムレータ7から紡績糸Yが概ね60cm程度、新たに引き出されることとなるが、このときに紡績糸Yがクランプ部18cと糸貯留体27との間で糸切れしないように、制御部9は、上側中継ぎパイプ18の旋回を巻付アーム29の回転と同期させる。上側中継ぎパイプ18による紡績糸Yの糸継実行部17への案内が完了したら(S600)、制御部9は、巻付アーム29の回転を停止させる(S610)。一方で、図1に示す下側中継ぎパイプ19は、上側中継ぎパイプ18と同様に、ヤーンフィーラ12の周辺に存在する紡績糸Yの糸端を吸引捕捉し、この紡績糸Yを糸継実行部17に案内する。そして、アキュムレータ7側の紡績糸Yと給糸部3側の紡績糸Yが糸継実行部17にセットされたら、制御部9は、図3に示すスプライサモータ23を駆動して、糸継実行部17による糸継ぎ作業を実行する(S620)。そして、制御部9は、図2に示すように巻付アーム29の平面視時計回りの回転を開始させ(S630)、図5の糸切れ状態から図2の通常巻取状態へと復帰する(S640)。なお、このときの巻付アーム29の回転数は、巻付速度Vbが1500m/minとなるように設定される(S630)。
ところで、給糸ボビンBが空になったとする。この場合、ゲート式テンサー24よりも下流側の紡績糸Yは、すべて糸貯留体27に巻き付けられ、紡績糸Yの糸端は糸貯留体27の下端部34の外周に巻き付けられた状態となる。これと同時に、ヤーンフィーラ12は制御部9へ空ボビン信号を送信する。図8に示すように制御部9は、ヤーンフィーラ12から空ボビン信号を受信すると(S340:YES)、図12に示す制御フローを実行する(S345)。即ち、制御部9は、図10に示す糸欠乏防止のための制御フローを公知のマルチタスク技術で並行して実行しつつ(S700)、現在の給糸ボビンBを排出して新たな給糸ボビンBをペグ10に装填し、この給糸ボビンBの紡績糸Yを案内し、下側中継ぎパイプ19に捕捉吸引可能な状態としておき(S710)、これと前後して巻付アーム29の回転を停止させる(S720)。次に、制御部9は、糸切れ時と同様に、電磁弁52や上パイプモータ21を制御して、図5の符号a及びb、c、dで示す太線矢印のように、糸経路28などに空気流を形成する(S730)。次に、巻付アームモータ制御部61は、巻付アーム29が貯留時とは逆方向に、即ち、図5で平面視で反時計回りに低速で回転するように巻付アームモータ30を制御し(S740)、引出センサ54からの引出検出信号の受信待ち状態となる(S750:NO)。すると、下端部34上に存在する紡績糸Yの糸端は、巻付アーム29の開口43に吸い込まれ、図6に示すように巻付アーム29の糸経路28などを経由して上側中継ぎパイプ18の吸引口18bに至る。このとき、紡績糸Yが引出センサ54を通過するので、引出センサ54は、制御部9に、引出検出信号を送信する。図12に示すように、引出センサ54から引出検出信号を受信すると(S750:YES)、制御部9は、巻付アーム29の低速回転を継続したまま、上側中継ぎパイプ18を若干旋回させることでクランプ部18cを操作して、吸引口18bを開放状態から閉塞状態へと切り替えると共にクランプ部18cによって紡績糸Yをクランプさせ、更に上から下へ向かって上側中継ぎパイプ18を旋回させることで、アキュムレータ7から引き出した紡績糸Yを糸継部6の糸継実行部17に案内する(S760)。このとき、上側中継ぎパイプ18の旋回によってアキュムレータ7から紡績糸Yが概ね60cm程度、新たに引き出されることとなるが、このときに紡績糸Yがクランプ部18cと糸貯留体27との間で糸切れしないように、制御部9は、上側中継ぎパイプ18の旋回を巻付アーム29の回転と同期させる。上側中継ぎパイプ18による紡績糸Yの糸継実行部17への案内が完了したら(S760)、制御部9は、巻付アーム29の回転を停止させる(S770)。一方で、図1に示す下側中継ぎパイプ19は、上側中継ぎパイプ18と同様に、ヤーンフィーラ12の周辺に存在する紡績糸Yの糸端を吸引捕捉し、この紡績糸Yを糸継実行部17に案内する。そして、アキュムレータ7側の紡績糸Yと給糸部3側の紡績糸Yが糸継実行部17にセットされたら、制御部9は、図3に示すスプライサモータ23を駆動して、糸継実行部17による糸継ぎ作業を実行する(S780)。そして、制御部9は、図2に示すように巻付アーム29の平面視時計回りの回転を開始させ(S790)、図5の糸切れ状態から図2の通常巻取状態へと復帰する(S800)。なお、このときの巻付アーム29の回転数は、巻付速度Vbが1500m/minとなるように設定される(S790)。
(技術事項1)
以上説明したように本実施形態において巻取ユニット2は、例えば図1に示すように、以下のように構成されている。即ち、給糸ボビンBから紡績糸Yを解舒して供給する給糸部3と、この給糸部3から供給される紡績糸Yの糸欠点を検出可能なヤーンクリアラ4と、この紡績糸YをパッケージPとして巻き取る巻取部5と、前記の給糸部3と巻取部5の間に設けられ、前記給糸部3側の紡績糸Yと前記巻取部5側の紡績糸Yを糸継ぎする糸継部6と、を備える。前記糸継部6と前記巻取部5の間で、前記糸継部6による糸継ぎの間に前記巻取部5に巻き取られる糸量以上で、紡績糸Yを貯留可能なアキュムレータ7と、前記糸継部6による糸継ぎの際に、アキュムレータ7に巻き込まれた紡績糸Yの糸端を前記糸継部6側(給糸部3側)に引き出す糸端引出機構Wと、を設けた。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、糸端引出機構Wは、空気流によって糸貯留体27に巻きつけられた糸Yの糸端を給糸部3側に引き出す。以上の構成によると、空気流によって糸端を引き出すので、他の糸にダメージを与えることなく糸端を引き出すことができる。
また、上記の巻取ユニット2は、更に、以下のように構成される。即ち、糸端引出機構Wは、内部に糸Yが走行可能な糸経路を有し、糸貯留体27の所定の巻付位置に給糸部3側の糸Yを案内する糸案内部を備えている。以上の構成によると、糸引出機構Wが糸案内部を一体的に備えることにより、糸巻取時の糸案内作業と、糸継作業時の糸引出作業とを最適な場所で実施することができる。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、アキュムレータ7は、紡績糸Yが外周上に巻き付けられる糸貯留体27と、内部に紡績糸Yが走行可能な糸経路28を有し、上記糸貯留体27の軸Cまわりに回転可能であって、この糸貯留体27の外周上に前記給糸部3側の紡績糸Yを案内するための巻付アーム29と、巻付アーム29に前記糸貯留体27側から前記糸継部6側へ向かって流れる空気流を発生させるための空気流発生部Xと、を備える。前記の糸端引出機構Wは、上記の巻付アーム29と空気流発生部Xを含んで構成されている。以上の構成によれば、前記糸継部6による糸継ぎの際、前記糸貯留体27の外周上にある紡績糸Yの糸端は上記空気流によって巻付アーム29の上記糸経路28内に吸い込まれ、前記糸継部6側へ向かって引き出される。このように巻付アーム29に、前記糸貯留体27の外周上に前記給糸部3側の紡績糸Yを案内する役割と、前記糸端引出機構Wの一部を構成する役割と、を兼ねさせることで、簡素な構成の巻取ユニット2が実現される。また、糸貯留時の糸道と糸継時の糸道が同じ糸道であるから、糸継ぎが完了した時点で既に紡績糸Yは糸貯留時の糸道にセットされることとなり、従って、糸継ぎ後、速やかに糸貯留を再開することができる。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、アキュムレータ7は、巻付アーム29を前記糸貯留体27の軸Cまわりに回転させる巻付アームモータ30を更に備える。前記糸端引出機構Wによって前記糸貯留体27の外周上にある紡績糸Yの糸端が前記糸継部6側に引き出される際に巻付アーム29が貯留時とは逆方向に回転するように巻付アームモータ30を制御する巻付アームモータ制御部61を更に設けた。以上の構成によれば、前記糸貯留体27の外周上にある紡績糸Yの糸端が、巻付アーム29の糸経路28内に一層、吸い込まれ易くなる。
また、上記の巻取ユニット2は、更に、以下のように構成されることが好ましい。即ち、アキュムレータ7は、前記給糸ボビンBのボビンチェンジの開始時から前記糸継部6が糸継ぎを完了させるまでの間に通常の巻取速度Vaで前記巻取部5が巻き取る糸量以上の糸量を貯留可能に構成される。以上の構成によれば、前記給糸ボビンBのボビンチェンジの開始時から前記糸継部6が糸継ぎを完了させるまでの間、前記巻取部5による通常の巻取速度Vaでの巻き取りを継続することができる。従って、高い生産性の巻取ユニット2が実現する。なお、仮に、前記巻取部5による通常の巻取速度Vaが1200[m/min]であるとし、前記ボビンチェンジの開始時から前記糸継部6が糸継ぎを完了させるまでの間に6[sec]要するとすると、上記の解決手段によれば、アキュムレータ7は、120[m]もの糸量を貯留可能に構成されることとなる。なお、綿番手30の紡績糸を対象とした本実施形態に係るアキュムレータ7は、300mもの糸量を貯留可能に構成されている。
また、上記の巻取ユニット2は、更に、以下のように構成されることが好ましい。即ち、アキュムレータ7は、ヤーンクリアラ4によって糸欠点が検出されたときに行われる糸切断時から前記糸継部6が糸継ぎを完了させるまでの間に通常の巻取速度Vaで前記巻取部5が巻き取る糸量以上の糸量を貯留可能に構成される。以上の構成によれば、ヤーンクリアラ4によって糸欠点が検出されたときに行われる糸切断時から前記糸継部6が糸継ぎを完了させるまでの間に前記巻取部5による通常の巻取速度Vaでの巻き取りを継続することができる。従って、高い生産性の巻取ユニット2が実現する。なお、仮に、前記巻取部5による通常の巻取速度Vaが1200[m/min]であるとし、前記糸切断時から前記糸継部6が糸継ぎを完了させるまでの間に3[sec]要するとすると、上記の解決手段によれば、アキュムレータ7は、60[m]もの糸量を貯留可能に構成されることとなる。なお、綿番手30の紡績糸を対象とした本実施形態に係るアキュムレータ7は、300mもの糸量を貯留可能に構成されている。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、アキュムレータ7は、糸切れ時から前記糸継部6が糸継ぎを完了させるまでの間に通常の巻取速度Vaで前記巻取部5が巻き取る糸量以上の糸量を貯留可能に構成される。以上の構成によれば、糸切れ時から前記糸継部6が糸継ぎを完了させるまでの間に前記巻取部5による通常の巻取速度Vaでの巻き取りを継続することができる。従って、高い生産性の巻取ユニット2が実現する。なお、前記巻取部5による通常の巻取速度Vaは1200[m/min]であり、前記糸切れ時から前記糸継部6が糸継ぎを完了させるまでの間に3[sec]要するので、上記の解決手段によれば、アキュムレータ7は、60[m]もの糸量を貯留可能に構成されることとなる。そして、綿番手30の紡績糸を対象とした上記実施形態では、アキュムレータ7は、300mもの糸量を貯留可能に構成されている。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、例えば、図8のS310に示すように、アキュムレータ7は、前記巻取部5が紡績糸Yを巻き取る際の通常の巻取速度Vaよりも速い糸速(巻付速度Vb)で紡績糸Yを貯留可能に構成されている。即ち、前記糸継部6による糸継ぎの際、アキュムレータ7による紡績糸Yの貯留が中断し、このアキュムレータ7に貯留されている紡績糸Yが前記巻取部5に巻き取られることで、アキュムレータ7による紡績糸Yの貯留量Mは一時的に減少する。そこで、以上の構成によれば、アキュムレータ7による紡績糸Yの貯留の再開後、上記貯留量Mを中断前のレベルまで回復させることができる。従って、アキュムレータ7による紡績糸Yの上記貯留量Mを必要最低限(例えば、糸継ぎ3回分)に留めることができ、もって、コンパクトなアキュムレータ7が実現される。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、例えば図2や図3に示すように、アキュムレータ7には、紡績糸Yの貯留量Mを検出する貯留量検出部(貯留上限センサ55、貯留下限センサ56、貯留最下限センサ57)が設けられる。例えば図10に示すように、この貯留量検出部によって検出される貯留量Mが所定値を下回ったら、前記巻取部5が紡績糸Yを巻き取る巻取速度Vaを減速させる綾振ドラムモータ制御部60を更に備える。以上の構成によれば、簡素な制御で、アキュムレータ7における紡績糸Yの貯留量Mが尽きるのを回避できる。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、綾振ドラムモータ制御部60は、例えば図10に示すように、パッケージPの糸層に乱れが生じない程度に穏やかに上記巻取速度Vaを減速させる。即ち、上記巻取速度Vaを減速させると、その減速の態様によっては、パッケージPの糸層に乱れが生じる虞がある。そこで、綾振ドラムモータ制御部60を上記の通りに構成することで、パッケージPの糸層に乱れが生じるのを抑制することができる。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、例えば図2に示すように、前記糸貯留体27は、前記給糸部3側の第一端31と、前記巻取部5側の第二端32を有し、この第一端31から第二端32に向かって外周が先細るように形成される。巻付アーム29は、前記糸貯留体27の外周上の前記第一端31側に前記給糸部3側の紡績糸Yを案内する。以上の構成によれば、前記糸貯留体27の外周上の前記第一端31側に前記給糸部3側の紡績糸Yが巻き付けられ、この巻き付けられた紡績糸Yは、図4に示すように、前記糸貯留体27の外周上を上記の第一端31から第二端32側に向かって巻き付け力Fによって自発的に移動しようとする。従って、前記巻付アーム29による紡績糸Yの上記案内位置Aにおける紡績糸Y同士の重なりが禁止され、もって、前記糸貯留体27上での紡績糸Yの円滑な解舒が実現される。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、例えば図4に示すように、前記糸貯留体27の外周の、上記第一端31側の傾斜αは、上記第二端32側の傾斜βと比較して大きく設定される。以上の形状によれば、前記糸貯留体27の外周上の前記第一端31側に巻き付けられた紡績糸Yは、巻き付け直後速やかに上記第二端32側へと移動を開始し、やがて傾斜が緩くなると、この移動がし難くなる。この結果、紡績糸Yは前記糸貯留体27の外周上に密に並べられ、もって、前記糸貯留体27上での紡績糸Yの円滑な解舒性と、高い貯留量と、が同時に実現される。
また、上記実施形態において巻取ユニット2は、以下のように構成されている。即ち、前記糸継部6と前記巻取部5の間で紡績糸Yを貯留可能なアキュムレータ7を設けた。前記糸継部6による糸継ぎの際に、アキュムレータ7に巻き込まれた紡績糸Yの糸端を前記糸継部6側に引き出す糸端引出機構Wを設けた。アキュムレータ7に巻き込まれている紡績糸Yの糸端が上記糸端引出機構Wによって実際に前記糸継部6側に引き出されたことを検出可能な引出センサ54を更に設けた。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、例えば図2に示すように、前記の引出センサ54は、アキュムレータ7に設けた。このように前記の引出センサ54をアキュムレータ7に設けることで、アキュムレータ7に貯留されている紡績糸Yの糸端が上記糸端引出機構Wによって前記糸継部6側に引き出されたことを、この糸端が実際に前記糸継部6に受け渡される前に、いち早く検出することができる。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、アキュムレータ7は、紡績糸Yが外周上に巻き付けられる糸貯留体27と、内部に紡績糸Yが走行可能な糸経路28を有し、上記糸貯留体27の軸Cまわりに回転可能であって、この糸貯留体27の外周上に前記給糸部3側の紡績糸Yを案内するための巻付アーム29と、巻付アーム29を前記糸貯留体27の軸Cまわりに回転させる巻付アームモータ30と、を備える。前記糸端引出機構Wは、巻付アーム29を貯留時とは逆方向に回転させつつ、前記糸貯留体27の外周上の紡績糸Yを巻付アーム29の糸経路28を介して前記糸継部6側に引き出すように構成される。上記の巻付アーム29の回転角度を検出可能なロータリエンコーダ53を設けた。前記引出センサ54が紡績糸Yを検出した時点からの、ロータリエンコーダ53によって検出される巻付アーム29の回転角度に基づいて、前記糸端引出機構Wによってアキュムレータ7から前記糸継部6側に引き出された紡績糸Yの糸長を演算する引出糸長演算部63を更に備える。上記のように引出糸長演算部63を設けることで、前記糸貯留体27の外周上の紡績糸Yのうち所望の糸長を過不足なく引き出すことができるようになる。従って、例えば、図11に示すように、ヤーンクリアラ4によって検出された糸欠点長さに相当する糸長分だけ前記糸貯留体27から引き出すことが可能となる。
また、上述の糸巻取装置は、更に、以下のように構成される。即ち、給糸部3には、給糸ボビンBの芯管に被さる規制部材を給糸ボビンBからの糸Yの解舒と連動して下降させることにより、給糸ボビンBから糸Yの解舒を補助する糸解舒補助装置11が設けられている。以上の構成によると、給糸ボビンBと巻取部3との間にアキュムレータ7を配置して糸のテンション伝達を遮断することにより、給糸ボビンBの解舒テンション部分に巻取部のトラバース変動によるテンション変動が伝わることを防止することができる。さらに給糸ボビンBに解舒補助装置11を取り付けることにより、給糸ボビンBからの糸解舒を安定して行うことができるので、糸切れを防止しさらに給糸ボビンからの解舒速度を速くすることができる。よって、給糸ボビンBからの解舒効率を向上させることができる。
次に、図13に基づいて、本願発明の第二実施形態を説明する。以下、本実施形態が上記第一実施形態と相違する点を中心に説明し、重複する説明は割愛する。
(技術事項18)
以上説明したように、本実施形態において巻取ユニット2は、以下のように構成されている。即ち、前記の引出センサ54は、前記糸継部6に設けた。このような配置によれば、前記の引出センサ54は、アキュムレータ7に貯留されている紡績糸Yの糸端が上記糸端引出機構Wによって前記糸継部6側に引き出されたことを検出できるのに加えて、前記糸端引出機構Wから前記糸継部6への紡績糸Yの正常な受け渡しが行われたことも併せて検出可能となる。
また、上記の巻取ユニット2は、更に、以下のように構成されている。即ち、前記糸継部6は、前記給糸部3側の紡績糸Yと前記巻取部5側の紡績糸Yとの糸継ぎ作業を実行する糸継実行部17と、前記巻取部5側の紡績糸Yを前記糸端引出機構Wから受け取って上記の糸継実行部17にセットする上側中継ぎパイプ18と、を含んで構成される。前記の引出センサ54は、上記の上側中継ぎパイプ18に設けた。このように、前記糸継部6を構成する部材のうち、最初に紡績糸Yの受け取る部材に前記の引出センサ54を設けることが合理的である。
次に、図14に基づいて、本願発明の第三実施形態を説明する。以下、本実施形態が上記第一実施形態と相違する点を中心に説明し、重複する説明は割愛する。
(技術事項20)
以上説明したように、本実施形態において巻取ユニット2は、以下のように構成されている。即ち、前記糸継部6による糸継ぎが行われる際、前記巻取部5側の紡績糸Yは前記ヤーンクリアラ4によってその存在が検出可能となっている。このヤーンクリアラ4を前記の引出センサ54として利用する。
次に、本願発明の第四実施形態を説明する。以下、本実施形態が上記第一実施形態と相違する点を中心に説明し、重複する説明は割愛する。
(技術事項21)
以上説明したように本実施形態において巻取ユニットは、以下のように構成されている。即ち、前記糸貯留体は、前記給糸部側の第一端と、前記巻取部側の第二端を有する。アキュムレータは、前記糸貯留体の外周上に巻き付けられた紡績糸Yを前記第一端から前記第二端に向かって強制的に搬送する搬送部を更に備える。巻付アームは、前記糸貯留体の外周上の前記第一端側に前記給糸部側の紡績糸Yを案内する。以上の構成によれば、前記糸貯留体の外周上の前記第一端側に紡績糸Yが巻き付けられ、この巻き付けられた紡績糸Yは、前記糸貯留体の外周上を上記の第一端から第二端側に向かって強制的に移動させられる。従って、巻付アームによる紡績糸Yの上記案内位置における紡績糸Y同士の重なりが禁止され、もって、前記糸貯留体上での紡績糸Yの円滑な解舒が実現される。
次に、図15に基づいて、本願発明の第五実施形態を説明する。以下、本実施形態が上記第一実施形態と相違する点を中心に説明し、重複する説明は割愛する。
(技術事項22)
以上説明したように、本実施形態において巻取ユニット2は、以下のように構成されている。即ち、アキュムレータ161が、複数のローラ171と、複数のローラ171に糸Yを巻き付ける糸巻付機構と、複数のローラ171のうちの少なくとも1つを駆動ローラとして回転させるローラ駆動モータとしての巻付アームモータ30、を備えており、複数のローラ171は、仮想円周上にその軸が位置するように、並べて回転可能に配置され、各々のローラ171の回転軸が前記仮想円周の周方向に傾斜して配置されている。以上の構成によれば、紡績糸が巻き付けられる複数のローラ171が傾斜して配置されているため、ローラ171を回転させると、糸巻付機構によりローラ171に巻き付けられた紡績糸は、順次搬送されて上記送り方向に移動する。このとき、ローラ171により糸Yを搬送しているため、糸Yにかかる負担(摩擦力)が小さく、糸Yの品質低下が低減される。
次に、図16に基づいて、本願発明の第六実施形態を説明する。以下、本実施形態が上記第一実施形態と相違する点を中心に説明し、重複する説明は割愛する。
以上説明したように、本実施形態において巻取ユニット2は、以下のように構成されている。即ち、アキュムレータ261が、回転することにより、糸Yが巻き付けられる回転貯留ドラム271と、回転貯留ドラム271を両方向に回転させるモータ272と、回転貯留ドラム271に、給糸部3側から糸Yを案内する糸案内部材273と、を備えている。以上の構成によると、糸継時には、回転貯留ドラム271を、糸Yの巻き付け時と逆に回転させることにより、回転貯留ドラム271に巻き付けられた糸Yを給糸部3側に引き出すことができる。
上記第四実施形態において搬送部は、円周上に所定の間隔を空けて並べられた複数の梁部材と、隣り合う一対の梁部材の間に配置され、糸貯留体の径方向に進退自在な揺動部材と、揺動部材を上記の作動状態と非作動状態との間で行き来するように揺動させる揺動機構と、によって構成した。しかし、これに代えて、上記の搬送部は、隣り合う一対の梁部材の間に配置され、梁部材の長手方向に沿って走行するベルト体を設けた構成であってもよい。
(技術事項24)
また、上記第二実施形態において引出センサ54は上側中継ぎパイプ18に設けることとした。しかし、これに代えて、引出センサ54は、アキュムレータ7と糸継部6との間に設ける構成も考えられる。
更に、上記第一実施形態においては、糸切れ時、糸欠点検出時、ボビンチェンジ時において下流側の紡績糸Yは、全て糸貯留体27に巻き付けられた状態となっている。しかし、糸切れ時、糸欠点検出時、ボビンチェンジ時において、その発生を事前に検知し下流側の紡績糸Yが糸貯留体27に全て巻き付けられる前に巻付アーム29の駆動を停止させる形態を実施することもできる。例えば、糸欠点検出時には、カッター4aが紡績糸Yを切断すると同時に巻付アーム29の駆動を停止させる。また、ボビンチェンジ時においては、糸解舒補助装置11に給糸ボビンBの残糸量を検出するセンサを取り付けて、給糸ボビンBの残糸量を監視する。そして、給糸ボビンBの空状態の発生を事前に検知し下流側の紡績糸Yが糸貯留体27に全て巻き付けられる前に巻付アーム29の駆動を停止させる形態を実施することもできる。
また、上記実施形態において糸端引出機構Wは、空気流発生部Xによって巻付アーム29内に形成された空気流によって、アキュムレータ7に貯留されている紡績糸Yの糸端を吸い込み、糸継部6側(給糸部3側)に引き出す機構としたが、糸端引出機構Wはこれに限られず、ロボットアームのような操作可能な腕部材でアキュムレータ7に貯留されている紡績糸Yの糸端を掴み出すようにする事も可能である。
Claims (20)
- 給糸ボビンから紡績糸を解舒する給糸部と、
この紡績糸をパッケージとして巻き取る巻取部と、
前記給糸部と前記巻取部の間に設けられ、紡績糸を巻き付けて貯留する糸貯留体を備えた糸貯留部と、
前記給糸部側の紡績糸の糸端と、前記糸貯留部側の紡績糸の糸端とを繋ぐ糸継作業を行う糸継部と、
前記糸継部によって糸継作業を行う際に、前記糸貯留体に巻きつけられた紡績糸の糸端を前記給糸部側に引き出す糸端引出機構と、
を設けたことを特徴とする、糸巻取装置。 - 請求項1に記載の糸巻取装置であって、前記糸端引出機構は、空気流によって前記糸貯留体に巻きつけられた紡績糸の糸端を前記給糸部側に引き出すことを特徴とする糸巻取装置。
- 請求項2に記載の糸巻取装置であって、前記糸端引出機構は、内部に紡績糸が走行可能な糸経路を有し、前記糸貯留体の所定の巻付位置に前記給糸部側の紡績糸を案内する糸案内部を備えていることを特徴とする、糸巻取装置。
- 請求項3に記載の糸巻取装置であって、
前記糸案内部により紡績糸が案内される糸貯留体の前記所定の巻付位置と、
前記糸端引出機構が、空気流によって前記糸貯留体に巻きつけられた紡績糸の糸端を前記給糸部側に引き出す位置とは、前記糸貯留体の回転軸方向において同じ位置であることを特徴する、糸巻取装置。 - 請求項3又は4に記載の糸巻取装置であって、
前記糸貯留体側から前記給糸部側へ向かって流れる気体流を前記糸案内部に発生させるための気体流発生部、
を更に備えていることを特徴とする糸巻取装置。 - 請求項5に記載の糸巻取装置であって、前記糸案内部は、上記糸貯留体の巻付中心軸まわりに回転可能であって、この糸貯留体の外周上に前記給糸部側の紡績糸を案内し、
前記の糸端引出機構は、上記の糸案内部と気体流発生部を含んで構成されている、ことを特徴とする、糸巻取装置。 - 請求項6に記載の糸巻取装置であって、前記糸貯留部は、前記糸案内部を前記糸貯留体の巻付中心軸まわりに回転させる駆動部を更に備え、前記糸端引出機構によって前記糸貯留体の外周上にある紡績糸の糸端が前記糸継部側に引き出される際に前記糸案内部が貯留時とは逆方向に回転するように前記駆動部を制御する制御部を更に設けた、ことを特徴とする、糸巻取装置。
- 請求項1~7の何れかに記載の糸巻取装置であって、前記糸貯留部に巻き付けられた紡績糸の糸端が、前記給糸部側に引き出されたことを検出可能な引出検出部を更に備えた、ことを特徴とする、糸巻取装置。
- 請求項8に記載の糸巻取装置であって、前記引出検出部は前記糸貯留部に設けられている、ことを特徴とする、糸巻取装置。
- 請求項1~9の何れかに記載の糸巻取装置であって、前記糸貯留部は、前記給糸ボビンのボビンチェンジの開始時から前記糸継部の糸継動作が少なくとも1回実行されるまでの間、通常の巻取速度で前記巻取部が巻き取る糸量以上の糸量を貯留可能に構成される、ことを特徴とする、糸巻取装置。
- 請求項1~9の何れかに記載の糸巻取装置であって、前記給糸部から供給される紡績糸の糸欠陥を検出可能な糸欠陥検出部と、検出した糸欠陥よりも上流側の糸を切断する切断装置と、を更に備え、前記糸貯留部は、前記糸欠陥検出部によって糸欠陥が検出されたときに前記切断装置が実行する糸切断から前記糸継部の糸継動作が少なくとも1回実行されるまでの間、通常の巻取速度で前記巻取部が巻き取る糸量以上の糸量を貯留可能に構成される、ことを特徴とする、糸巻取装置。
- 請求項1~9の何れかに記載の糸巻取装置であって、前記糸貯留部は、糸切れ発生時から前記糸継部による糸継動作が少なくとも1回実行されるまでの間、通常の巻取速度で前記巻取部が巻き取る糸量以上の糸量を貯留可能に構成される、ことを特徴とする、糸巻取装置。
- 請求項1~12の何れかに記載の糸巻取装置であって、前記糸貯留部は、前記巻取部が紡績糸を巻き取る際の通常の巻取速度よりも速い糸速で紡績糸を貯留可能に構成されている、ことを特徴とする、糸巻取装置。
- 請求項1~6の何れかに記載の糸巻取装置であって、前記糸貯留部には、紡績糸の貯留量を検出する貯留量検出部が設けられ、この貯留量検出部によって検出される貯留量が所定値以下になったことを検出した場合、前記巻取部が紡績糸を巻き取る巻取速度を減速させる制御部を更に備える、ことを特徴とする、糸巻取装置。
- 請求項14に記載の糸巻取装置であって、前記制御部は、パッケージの糸層に乱れが生じないように上記巻取速度を減速させる、ことを特徴とする、糸巻取装置。
- 請求項5又は6に記載の糸巻取装置であって、前記糸貯留体は、前記給糸部側の第一端と、前記巻取部側の第二端を有し、この第一端から第二端に向かって外周が短くなるように形成されることにより第一端から第二端に渡る傾斜部が形成され、前記糸案内部は、前記糸貯留体の外周上の前記第一端側に前記給糸部側の紡績糸を案内する、ことを特徴とする糸巻取装置。
- 請求項16に記載の糸巻取装置であって、前記糸貯留体の外周の、前記傾斜部は少なくとも2種類の傾きで構成され、上記第一端側の傾斜は、上記第二端側の傾斜と比較して大きく設定される、ことを特徴とする糸巻取装置。
- 請求項5~15に記載の糸巻取装置であって、前記糸貯留部が、複数のローラと、前記複数のローラに紡績糸を巻き付ける糸巻付機構と、前記複数のローラのうちの少なくとも1つを駆動ローラとして回転させるローラ駆動モータと、を備えており、前記複数のローラは、仮想円周上にその軸が位置するように、並べて回転可能に配置され、各々のローラの回転軸が前記仮想円周方向に傾斜して配置されていることを特徴とする糸巻取装置。
- 請求項5、16又は17に記載の糸巻取装置であって、前記糸貯留部が、回転することにより、紡績糸が巻き付けられる回転貯留ドラムと、前記回転貯留ドラムを両方向に回転させるモータと、前記回転貯留ドラムに、前記給糸部側から紡績糸を案内する案内部材とを備えたことを特徴とする糸巻取装置。
- 請求項1~19に記載の糸巻取装置であって、前記給糸部には、給糸ボビンの芯管に被さる規制部材を給糸ボビンからの紡績糸の解舒と連動して下降させることにより、給糸ボビンから紡績糸の解舒を補助する糸解舒補助装置が設けられていることを特徴とする糸巻取装置。
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JP2011534318A JP5375967B2 (ja) | 2009-09-30 | 2010-09-30 | 糸巻取装置 |
EP10820659.0A EP2484619B1 (en) | 2009-09-30 | 2010-09-30 | Yarn winder |
EP16151967.3A EP3028977B1 (en) | 2009-09-30 | 2010-09-30 | Yarn winder |
CN201080044104.2A CN102548884B (zh) | 2009-09-30 | 2010-09-30 | 纱线卷绕装置 |
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JP2016016969A (ja) * | 2014-07-10 | 2016-02-01 | 村田機械株式会社 | 糸貯留装置、糸巻取ユニット及び糸巻取機 |
JP2016078995A (ja) * | 2014-10-17 | 2016-05-16 | 村田機械株式会社 | 糸巻取装置及びパッケージ減速方法 |
CN108760571B (zh) * | 2018-07-25 | 2023-11-21 | 盐城工业职业技术学院 | 一种纱线定量及定量不匀率检测仪器 |
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JPWO2011040544A1 (ja) | 2013-02-28 |
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