EP0963936A1 - Yarn winding method for take-up winder and take-up winder - Google Patents
Yarn winding method for take-up winder and take-up winder Download PDFInfo
- Publication number
- EP0963936A1 EP0963936A1 EP99107115A EP99107115A EP0963936A1 EP 0963936 A1 EP0963936 A1 EP 0963936A1 EP 99107115 A EP99107115 A EP 99107115A EP 99107115 A EP99107115 A EP 99107115A EP 0963936 A1 EP0963936 A1 EP 0963936A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bobbin
- take
- winder
- contact roller
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/28—Traversing devices; Package-shaping arrangements
- B65H54/32—Traversing devices; Package-shaping arrangements with thread guides reciprocating or oscillating with variable stroke
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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
- B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
- B65H67/044—Continuous winding apparatus for winding on two or more winding heads in succession
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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
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
- B65H54/385—Preventing edge raising, e.g. creeping arrangements
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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
- B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
- B65H67/044—Continuous winding apparatus for winding on two or more winding heads in succession
- B65H67/048—Continuous winding apparatus for winding on two or more winding heads in succession having winding heads arranged on rotary capstan head
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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 method for a take-up winder and a take-up winder, and in particular, to a yarn winding method for a take-up winder and a take-up winder wherein a traverse device makes a continuously supplied yarn traverse, and a contact roller contacts a bobbin switched by a turret to a winding position and the rotating roller causes the bobbin to wind the yarn around the bobbin as a yarn package and the take-up winder is adapted to prevent the edge shape of the yarn layers of the package from becoming a "saddle bag shape".
- a turret type take-up winder may use a traverse device to make a continuously supplied yarn traverse, and the turret is rotated to switch the two bobbin holders attached to the turret between a winding position and a standby position, and a contact roller contacts a bobbin at the winding position to wind the yarn supplied and traversed around the bobbin.
- the edge shape of yarn layers of the packages may become the saddle bag shape, thereby preventing good yarn packages from being obtained.
- the present invention is provided in view of this problem in the conventional technique. Accordingly, the object of the present invention is to provide a winding method and a take-up winder that varies the winding width in the axial direction of a bobbin in order to prevent suddle bag shape from being formed.
- the present invention provides a winding method for a take-up winder wherein a traverse device makes a continuously supplied yarn traverse and a contact roller contacts a bobbin, and the yarn is wound around the bobbin, wherein:
- the present invention provides a winding method for a take-up winder wherein the time during which the bobbin and the contact roller contact each other is longer than the time during which they are mutually separated.
- the present invention provides a take-up winder wherein drive motors are provided for each bobbin holder holding the bobbin and the contact roller, and a rotation speed detection means is provided to detect the rotation speed of the bobbin holder, and in addition, a control means is provided to control the rotation speed of the bobbin holder based on the value detected by the rotation speed detection means.
- the present invention provides a take-up winder wherein the rotation speed of the bobbin holder immediately before the bobbin leaves the contact roller is input and wherein after the bobbin leaves the contact roller, the rotation speed of the bobbin holder is reduced over time based on the input rotation speed.
- a take-up winder and a winding method for a take-up winder according to the present invention will be described below in detail based on specific examples shown in the drawings.
- Figure 1 is a schematic front view showing a specific embodiment of a take-up winder according to the present invention. The figure shows a state at the end winding in which a yarn has been wound around a bobbin at a winding position in the take-up winder.
- Figure 2 is a schematic side view showing the take-up winder as seen from the side.
- the take-up winder U has a body frame 7 and an elevating box 1 that can ascend and descend, a rotatable turret plate 2 and a fixed frame 8 having an operation panel 9 at its front surface end are provided in the body frame 7.
- a contact roller 3 and a traverse device 4 are supported in the elevating box 1.
- the contact roller 3 applies pressure against the surface layer of yarn on a bobbin B at a winding position P1, and a driving source 10 comprising a motor M3, as shown in Figures 1 and 2, drives the contact roller 3 so that the bobbin around which a yarn is being wound rotates counterclockwise.
- a traverse device 4 has a traverse guide 5 so that the guide 5 engages a yarn Y to travel through the traversing range for performing traverse.
- a rotational driving apparatus (not shown in the drawings) can rotate the turret plate 2 around a rotating shaft 6.
- a first bobbin holder 11 and a second bobbin holder 12 are mounted on the turret plate 2 in such a way as to protrude therefrom.
- a plurality of (in Figure 1, six) bobbins are installed on each of the bobbin holders 11 and 12.
- One 11 of the bobbin holders 11, 12 is located at the winding position P1, while the other bobbin holder 12 is located at a standby position P2.
- a driving source 13 comprising a motor M1 drives the first bobbin holder 11, while a driving source 14 comprising a motor M2 drives the second bobbin holder 12.
- the yarn Y is wound around the bobbin B on the bobbin holder 11 located at the winding position P1.
- the turret plate 2 rotates 180° to move the full bobbin FB at the winding position P1 to the standby position P2 while moving the empty bobbin EB prepared at the standby position P2 to the winding position P1.
- a yarn transferring mechanism transfers the yarn from the full bobbin FB to the empty bobbin EB to provide continuous winding.
- the plurality of (in the example shown in Figure 3, six) bobbins B are installed on each of the bobbin holders 11 and 12. During winding, one 11 of the bobbin holders 11, 12 is located at the winding position P1, while the other bobbin holder 12 is located at the standby position P2.
- the yarn Y passes through the traverse guide 5 of the traverse device 4, around the contact roller 3, and onto the bobbin B at the winding position P1.
- the contact controller 3 is configured to guide the traversing yarn Y by the traverse guide 5 of the traverse device 4 and to repeatedly contact and separate from the bobbin during winding.
- the yarn Y is guided to the bobbin B at the winding position at a distance of given free length L measured from the point at which the yarn Y leaves the contact roller 3 to the contact point of the winding yarn at the bobbin.
- Figures 3 and 4 show a specific example of a configuration for varying the free length L in the winding method for the take-up winder according to the present invention.
- Figure 3 shows a configuration in which the contact roller 3 is contacting the bobbin B ( Figure 3A), and in this configuration, the turret plate 2 supporting the bobbin B rotates ⁇ ° counterclockwise to mutually separate the bobbin B and the contact roller 3, thereby providing a long free length L (smaller winding width).
- Figure 4 shows a configuration in which the contact roller 3 is contacting the bobbin B ( Figure 4A), and in this configuration, the elevating box 1 supporting the contact roller 3 ascends so as to mutually separate the bobbin B and the contact roller 3, thereby providing a long free length L (a smaller winding width).
- An important characteristic of the present invention is that the rotations of the first and second bobbin holders 11 and 12 and the contact roller 3 must be controlled due to the configuration in which the contact roller 3 is separated from the bobbin B.
- the drive motor 13 (M1) is provided for the first bobbin holder 11 holding the bobbin B
- the second drive motor 14 (M2) is provided for the second bobbin holder 12
- the third drive motor 10 (M3) is provided for the contact roller 3.
- a contact roller rotation speed detection means 16 comprising a contact roller rotation speed detection sensor 15 provided for the contact roller 3 detects the rotation speed of the contact roller 3 to control the rotation speed of the motor 13 (M1) for the bobbin holder 11 at the winding position P1 on the basis of the detected value. If the bobbin holder 12 is at the winding position P1, the rotation speed of the motor 14 (M2) for the bobbin holder 12 is controlled.
- the take-up winder U shown in Figure 1 comprises a contact/leave switching control means 17.
- the contact/leave switching control means 17 outputs control signals to an elevation control means 18 for controlling the elevating box 1 as well as to a rotation control means 19 for controlling the rotation of the turret plate 2.
- the contact/leave switching control means 17 also outputs control signals to a contact roller drive motor control means 20 for controlling the contact roller drive motor 10 (M3), a first bobbin holder drive motor control means 21 for controlling the first bobbin holder drive motor 13 (M1), and a second bobbin holder drive motor control means 22 for controlling the second bobbin holder drive motor 14 (M2).
- a contact roller drive motor control means 20 for controlling the contact roller drive motor 10 (M3)
- a first bobbin holder drive motor control means 21 for controlling the first bobbin holder drive motor 13 (M1)
- a second bobbin holder drive motor control means 22 for controlling the second bobbin holder drive motor 14 (M2).
- the contact/leave switching control means 17 supplies an instruction to the rotation control means 19 for the turret plate or the elevation control means 18 for the elevating box, and if the contact roller 3 separates from the bobbin B, the contact/leave switching control means 17 changes, via the bobbin holder drive motor control means, the control of the drive motor for the bobbin holder at the winding position P1.
- the bobbin holder drive motor control means has a motor instruction value calculating means 23, a motor instruction value output means 24, and a motor instruction value input means 25, and while the bobbin B is contacting the contact roller 3, the motor instruction value calculating means 23 calculates a motor instruction value based on a detection signal from the contact roller rotation speed detection means 16, and the motor instruction value output means 24 outputs a control signal to the bobbin holder drive motor.
- the motor instruction value calculating means 23 calculates a subsequent motor instruction value based on a detection signal (a motor instruction value) from the motor instruciton value input means 25 provided when the bobbin B leaves the contact roller 3, and the motor instruction value output means 24 outputs a control signal to the bobbin holder drive motor.
- the rotation speed (an instruction value for the bobbin holder drive motor) of the bobbin holder immediately before the bobbin B separates from the contact roller 3 is input, and after the bobbin B has left the contact roller 3, the rotation speed of the bobbin holder is reduced over time based on the input rotation speed.
- Figure 5 is a schematic explanatory drawing for the winding method for a take-up winder according to the present invention.
- Figure 5 is figure for explaning a principle how the winding width increases with decreasing free length and decreases with increasing free length, and also is a summary principle explanation figure which shows the state of the yarn path established when a yarn is wound at a winding angle ⁇ .
- Figure 6 is a graph showing an example of the pattern of changes in free length based on the relationship between the free length and the winding diameter (winding duration).
- the contact roller 3 is a driving roller and is driven by the driving source 10 comprising the motor M3, and is located between the traverse guide 5 and the bobbin B to guide the traversing yarn Y to the bobbin B. In this case, while that yarn is traveling, the contact roller 3 contacts and supports the yarn Y over a contact distance Lx.
- the distance between the guide 5 and a contact start point CP 1 of a contact distance Lx on the contact roller 3 is defined as the first free length portion L 0 (fixed), and the distance between a contact end point CP 2 of the contact distance Lx on the contact roller 3 and a winding contact point WP of the bobbin B at the winding position is defined as the second free length portion (variable) which varies between free length L 1 and L 2 .
- the winding width W1 is a winding width at the free length L 1 and the winding width W2 is a winding width at the free length L 2 .
- the winding angle ⁇ is determined by the traversing speed of the traverse guide 5 of the traverse device 4 and the peripheral speed of the bobbin B, as shown in the vector diagram in Figure 5.
- the yarn path established while the yarn Y is being wound around the bobbin B at the winding angle ⁇ is as shown in Figure 5.
- the yarn Y follows a yarn path YA, and after the traverse guide 5 makes a turn, the yarn Y shifts to yarn path YB.
- the winding width increases to W 2 when the free length is short L 2 , and decreases to W1 when the free length is long L 1 . While the bobbin B is contacting the contact roller 3, the free length L becomes zero (0) and the winding width W is at a maximum.
- the free length is switched between L 1 and 0 at specified times to allow the bobbin and the contact roller to contact and separate and thereby wind the yarn, as shown by pattern A in Figure 6.
- the free length L is aperiodically varied between L 1 and 0 to allow the bobbin and the contact roller to contact and separate and thereby wind the yarn.
- the per time during which the bobbin and the contact roller are mutually separated is preferably short, and within the overall winding time period, the total bobbin/contact roller separation time is preferably shorter than the total time during which they contact each other.
- the traverse device is not limited to the illustrated cam traverse device, and may comprise a blade type traverse device.
- the present invention can then be applied to, for example, the winding of elastic yarns etc..
- the winding method for a take-up winder according to the present invention repeatedly causes a contact roller to contact and separate from a bobbin. This enables the free length to vary during yarn winding, and thus helps vary the winding width in the axial direction of the bobbin, thereby providing good yarn packages in which the edge shape of a yarn layer of a package are prevented from becoming a saddle bag shape. Therefore, this method is very effective in achieving the object of the present invention.
Abstract
Description
- The present invention relates to a yarn winding method for a take-up winder and a take-up winder, and in particular, to a yarn winding method for a take-up winder and a take-up winder wherein a traverse device makes a continuously supplied yarn traverse, and a contact roller contacts a bobbin switched by a turret to a winding position and the rotating roller causes the bobbin to wind the yarn around the bobbin as a yarn package and the take-up winder is adapted to prevent the edge shape of the yarn layers of the package from becoming a "saddle bag shape".
- Conventionally, a turret type take-up winder may use a traverse device to make a continuously supplied yarn traverse, and the turret is rotated to switch the two bobbin holders attached to the turret between a winding position and a standby position, and a contact roller contacts a bobbin at the winding position to wind the yarn supplied and traversed around the bobbin.
- In such a take-up winder wherein a traverse device makes a continuously supplied yarn traverse while winding it around a bobbin to form packages, the edge shape of yarn layers of the packages may become the saddle bag shape, thereby preventing good yarn packages from being obtained.
- The present invention is provided in view of this problem in the conventional technique. Accordingly, the object of the present invention is to provide a winding method and a take-up winder that varies the winding width in the axial direction of a bobbin in order to prevent suddle bag shape from being formed.
- To achieve this object, the present invention provides a winding method for a take-up winder wherein a traverse device makes a continuously supplied yarn traverse and a contact roller contacts a bobbin, and the yarn is wound around the bobbin, wherein:
- the bobbin and the contact roller which contacts the bobbin, repeatedly contact each other and separate during winding.
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- Furthermore, the present invention provides a winding method for a take-up winder wherein the time during which the bobbin and the contact roller contact each other is longer than the time during which they are mutually separated.
- In addition, the present invention provides a take-up winder wherein drive motors are provided for each bobbin holder holding the bobbin and the contact roller, and a rotation speed detection means is provided to detect the rotation speed of the bobbin holder, and in addition, a control means is provided to control the rotation speed of the bobbin holder based on the value detected by the rotation speed detection means.
- Moreover, the present invention provides a take-up winder wherein the rotation speed of the bobbin holder immediately before the bobbin leaves the contact roller is input and wherein after the bobbin leaves the contact roller, the rotation speed of the bobbin holder is reduced over time based on the input rotation speed.
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- Figure 1 is a schematic front view showing an example of a basic configuration of a winding method for a take-up winder according to the present invention, and showing a state at the end of winding in which yarn has been wound around a bobbin located at a winding position and a control block circuit.
- Figure 2 is a schematic side view showing the take-up winder as seen from the side.
- Figure 3 shows a specific example of a configuration for varying the free length L in a winding method for a take-up winder according to the present invention. Figure 3A is a schematic front view showing the integral part in which a contact roller is contacting a bobbin. Figure 3B is a front view of the integral part in which a long free length L (a smaller winding width) is obtained by rotating a turret plate supporting the bobbin, through an angle of ° counterclockwise to mutually separate the bobbin and the roller.
- Figure 4 shows a specific example of a configuration for varying the free length L in the winding method for a take-up winder according to the present invention. Figure 4A is a schematic front view showing the integral part in which the contact roller is contacting the bobbin. Figure 4B is a front view of the integral part in which a long free length L (a smaller winding width) is obtained by elevating an elevating box that supports the contact roller to mutually separate the bobbin and the contact roller.
- Figure 5 is a schematic explanatory drawing for the winding method for a take-up winder according to the present invention. Figure 5 is figure for explaning a principle how the winding width increases with decreasing free length and decreases with increasing free length, and also is a summary principle explanation figure which shows the state of the yarn path established when a yarn is wound at a winding angle .
- Figure 6 is a graph showing an example of the pattern of changes in free length based on the relationship between the free length and the winding diameter (winding duration).
-
- A take-up winder and a winding method for a take-up winder according to the present invention will be described below in detail based on specific examples shown in the drawings.
- Figure 1 is a schematic front view showing a specific embodiment of a take-up winder according to the present invention. The figure shows a state at the end winding in which a yarn has been wound around a bobbin at a winding position in the take-up winder. Figure 2 is a schematic side view showing the take-up winder as seen from the side.
- First, the basic structure of a take-up winder U according to the present invention will be described with reference to Figures 1 and 2.
- In Figure 1, the take-up winder U has a
body frame 7 and anelevating box 1 that can ascend and descend, arotatable turret plate 2 and afixed frame 8 having anoperation panel 9 at its front surface end are provided in thebody frame 7. - A
contact roller 3 and atraverse device 4 are supported in the elevatingbox 1. Thecontact roller 3 applies pressure against the surface layer of yarn on a bobbin B at a winding position P1, and adriving source 10 comprising a motor M3, as shown in Figures 1 and 2, drives thecontact roller 3 so that the bobbin around which a yarn is being wound rotates counterclockwise. - In addition, a
traverse device 4 has atraverse guide 5 so that theguide 5 engages a yarn Y to travel through the traversing range for performing traverse. - A rotational driving apparatus (not shown in the drawings) can rotate the
turret plate 2 around a rotatingshaft 6. Afirst bobbin holder 11 and asecond bobbin holder 12 are mounted on theturret plate 2 in such a way as to protrude therefrom. A plurality of (in Figure 1, six) bobbins are installed on each of thebobbin holders bobbin holders other bobbin holder 12 is located at a standby position P2. - As shown in Figures 1 and 2, a
driving source 13 comprising a motor M1 drives thefirst bobbin holder 11, while adriving source 14 comprising a motor M2 drives thesecond bobbin holder 12. - The yarn Y is wound around the bobbin B on the
bobbin holder 11 located at the winding position P1. Each time the bobbin B becomes a full bobbin FB, theturret plate 2 rotates 180° to move the full bobbin FB at the winding position P1 to the standby position P2 while moving the empty bobbin EB prepared at the standby position P2 to the winding position P1. Then, a yarn transferring mechanism transfers the yarn from the full bobbin FB to the empty bobbin EB to provide continuous winding. - The plurality of (in the example shown in Figure 3, six) bobbins B are installed on each of the
bobbin holders bobbin holders other bobbin holder 12 is located at the standby position P2. - In the take-up winder U, the yarn Y passes through the
traverse guide 5 of thetraverse device 4, around thecontact roller 3, and onto the bobbin B at the winding position P1. - According to the present invention, the
contact controller 3 is configured to guide the traversing yarn Y by thetraverse guide 5 of thetraverse device 4 and to repeatedly contact and separate from the bobbin during winding. The yarn Y is guided to the bobbin B at the winding position at a distance of given free length L measured from the point at which the yarn Y leaves thecontact roller 3 to the contact point of the winding yarn at the bobbin. - Figures 3 and 4 show a specific example of a configuration for varying the free length L in the winding method for the take-up winder according to the present invention. Figure 3 shows a configuration in which the
contact roller 3 is contacting the bobbin B (Figure 3A), and in this configuration, theturret plate 2 supporting the bobbin B rotates ° counterclockwise to mutually separate the bobbin B and thecontact roller 3, thereby providing a long free length L (smaller winding width). - By contrast, Figure 4 shows a configuration in which the
contact roller 3 is contacting the bobbin B (Figure 4A), and in this configuration, theelevating box 1 supporting thecontact roller 3 ascends so as to mutually separate the bobbin B and thecontact roller 3, thereby providing a long free length L (a smaller winding width). - An important characteristic of the present invention is that the rotations of the first and
second bobbin holders contact roller 3 must be controlled due to the configuration in which thecontact roller 3 is separated from the bobbin B. - According to the present invention, the drive motor 13 (M1) is provided for the
first bobbin holder 11 holding the bobbin B, the second drive motor 14 (M2) is provided for thesecond bobbin holder 12, and the third drive motor 10 (M3) is provided for thecontact roller 3. - A controlling system for the take-up winder according to the present invention will be explained based on the specific embodiment shown in Figure 1.
- First, if the yarn is being wound while the
contact roller 3 is contacting the bobbin B, a contact roller rotation speed detection means 16 comprising a contact roller rotationspeed detection sensor 15 provided for thecontact roller 3 detects the rotation speed of thecontact roller 3 to control the rotation speed of the motor 13 (M1) for thebobbin holder 11 at the winding position P1 on the basis of the detected value. If thebobbin holder 12 is at the winding position P1, the rotation speed of the motor 14 (M2) for thebobbin holder 12 is controlled. - On the other hand, according to the present invention, the control executed when the
roller 3 separates from the bobbin B is important. The take-up winder U shown in Figure 1 comprises a contact/leave switching control means 17. The contact/leave switching control means 17 outputs control signals to an elevation control means 18 for controlling the elevatingbox 1 as well as to a rotation control means 19 for controlling the rotation of theturret plate 2. The contact/leave switching control means 17 also outputs control signals to a contact roller drive motor control means 20 for controlling the contact roller drive motor 10 (M3), a first bobbin holder drive motor control means 21 for controlling the first bobbin holder drive motor 13 (M1), and a second bobbin holder drive motor control means 22 for controlling the second bobbin holder drive motor 14 (M2). - The contact/leave switching control means 17 supplies an instruction to the rotation control means 19 for the turret plate or the elevation control means 18 for the elevating box, and if the
contact roller 3 separates from the bobbin B, the contact/leave switching control means 17 changes, via the bobbin holder drive motor control means, the control of the drive motor for the bobbin holder at the winding position P1. The bobbin holder drive motor control means has a motor instruction value calculating means 23, a motor instruction value output means 24, and a motor instruction value input means 25, and while the bobbin B is contacting thecontact roller 3, the motor instruction value calculating means 23 calculates a motor instruction value based on a detection signal from the contact roller rotation speed detection means 16, and the motor instruction value output means 24 outputs a control signal to the bobbin holder drive motor. - While, however, the bobbin B is separate from the
contact roller 3, the motor instruction value calculating means 23 calculates a subsequent motor instruction value based on a detection signal (a motor instruction value) from the motor instruciton value input means 25 provided when the bobbin B leaves thecontact roller 3, and the motor instruction value output means 24 outputs a control signal to the bobbin holder drive motor. - Specifically, the rotation speed (an instruction value for the bobbin holder drive motor) of the bobbin holder immediately before the bobbin B separates from the
contact roller 3 is input, and after the bobbin B has left thecontact roller 3, the rotation speed of the bobbin holder is reduced over time based on the input rotation speed. - Then, the relationship between the free length L and the axial winding width W in the axial direction of the bobbin B associated with the displacement of the
contact roller 3 will be described with reference to Figures 5 and 6. - Figure 5 is a schematic explanatory drawing for the winding method for a take-up winder according to the present invention. Figure 5 is figure for explaning a principle how the winding width increases with decreasing free length and decreases with increasing free length, and also is a summary principle explanation figure which shows the state of the yarn path established when a yarn is wound at a winding angle . Figure 6 is a graph showing an example of the pattern of changes in free length based on the relationship between the free length and the winding diameter (winding duration).
- The
contact roller 3 is a driving roller and is driven by the drivingsource 10 comprising the motor M3, and is located between thetraverse guide 5 and the bobbin B to guide the traversing yarn Y to the bobbin B. In this case, while that yarn is traveling, thecontact roller 3 contacts and supports the yarn Y over a contact distance Lx. - The distance between the
guide 5 and a contact start point CP1 of a contact distance Lx on thecontact roller 3 is defined as the first free length portion L0 (fixed), and the distance between a contact end point CP2 of the contact distance Lx on thecontact roller 3 and a winding contact point WP of the bobbin B at the winding position is defined as the second free length portion (variable) which varies between free length L1 and L2. In this case, the winding width W1 is a winding width at the free length L1 and the winding width W2 is a winding width at the free length L2. - According to the illustrated take-up winder U, the winding angle is determined by the traversing speed of the
traverse guide 5 of thetraverse device 4 and the peripheral speed of the bobbin B, as shown in the vector diagram in Figure 5. The yarn path established while the yarn Y is being wound around the bobbin B at the winding angle is as shown in Figure 5. As shown in this figure, when thetraverse guide 5 reaches the traverse end, the yarn Y follows a yarn path YA, and after thetraverse guide 5 makes a turn, the yarn Y shifts to yarn path YB. In this case, if the free length varies between L1 and L2, the winding width increases to W2 when the free length is short L2, and decreases to W1 when the free length is long L1. While the bobbin B is contacting thecontact roller 3, the free length L becomes zero (0) and the winding width W is at a maximum. - A variety of winding methods can be applied to the take-up winder according to the present invention. In one method, the free length is switched between L1 and 0 at specified times to allow the bobbin and the contact roller to contact and separate and thereby wind the yarn, as shown by pattern A in Figure 6. In another method, the free length L is aperiodically varied between L1 and 0 to allow the bobbin and the contact roller to contact and separate and thereby wind the yarn. However, the per time during which the bobbin and the contact roller are mutually separated is preferably short, and within the overall winding time period, the total bobbin/contact roller separation time is preferably shorter than the total time during which they contact each other.
- In a take-up winder to which the winding method according to the present invention is applied, the traverse device is not limited to the illustrated cam traverse device, and may comprise a blade type traverse device. The present invention can then be applied to, for example, the winding of elastic yarns etc..
- The winding method for a take-up winder according to the present invention configured as described above repeatedly causes a contact roller to contact and separate from a bobbin. This enables the free length to vary during yarn winding, and thus helps vary the winding width in the axial direction of the bobbin, thereby providing good yarn packages in which the edge shape of a yarn layer of a package are prevented from becoming a saddle bag shape. Therefore, this method is very effective in achieving the object of the present invention.
Claims (4)
- A winding method for a take-up winder wherein a traverse device makes a continuously supplied yarn traverse and a contact roller contacts a bobbin, thereby winding the yarn around the bobbin, characterized in that:the bobbin and the contact roller which contacts the bobbin, repeatedly contact and separate each other during winding.
- A winding method for a take-up winder according to Claim 1 characterized in that the time during which the bobbin and the contact roller contact each other is longer than the time during which they are mutually separated.
- A take-up winder characterized in that drive motors are provided for each bobbin holder and a contact roller; in that a rotation speed detection means is provided to detect the rotation speed of said bobbin holder; and in that a control means is provided to control the rotation speed of the bobbin holder based on the value detected by the rotation speed detection means.
- A take-up winder according to Claim 3 characterized in that the rotation speed of the bobbin holder immediately before the bobbin leaves the contact roller is input; and in that after the bobbin leaves the contact roller, the rotation speed of the bobbin holder is reduced over time based on the input rotation speed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16311398 | 1998-06-11 | ||
JP16311398A JP3807468B2 (en) | 1998-06-11 | 1998-06-11 | Winding method and spinning winder in a spinning winder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0963936A1 true EP0963936A1 (en) | 1999-12-15 |
EP0963936B1 EP0963936B1 (en) | 2003-12-03 |
Family
ID=15767420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99107115A Expired - Lifetime EP0963936B1 (en) | 1998-06-11 | 1999-04-12 | Yarn winding method for take-up winder and take-up winder |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0963936B1 (en) |
JP (1) | JP3807468B2 (en) |
KR (1) | KR100337686B1 (en) |
CN (1) | CN1262458C (en) |
DE (1) | DE69913248T2 (en) |
TW (1) | TW477773B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010058499A (en) * | 1999-12-30 | 2001-07-06 | 최의박 | Apparatus for exchanging bobbin automatically for winder of wet type drawing machine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0374536A2 (en) * | 1988-12-22 | 1990-06-27 | B a r m a g AG | Winding apparatus |
EP0678468A2 (en) * | 1994-04-22 | 1995-10-25 | Toray Engineering Co., Ltd. | Method for controlling spindle-drive type yarn winder |
-
1998
- 1998-06-11 JP JP16311398A patent/JP3807468B2/en not_active Expired - Lifetime
-
1999
- 1999-02-04 TW TW088101724A patent/TW477773B/en not_active IP Right Cessation
- 1999-02-19 KR KR1019990005570A patent/KR100337686B1/en not_active IP Right Cessation
- 1999-04-12 DE DE69913248T patent/DE69913248T2/en not_active Expired - Lifetime
- 1999-04-12 EP EP99107115A patent/EP0963936B1/en not_active Expired - Lifetime
- 1999-06-04 CN CNB991080068A patent/CN1262458C/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0374536A2 (en) * | 1988-12-22 | 1990-06-27 | B a r m a g AG | Winding apparatus |
EP0678468A2 (en) * | 1994-04-22 | 1995-10-25 | Toray Engineering Co., Ltd. | Method for controlling spindle-drive type yarn winder |
Also Published As
Publication number | Publication date |
---|---|
JP3807468B2 (en) | 2006-08-09 |
DE69913248T2 (en) | 2004-09-30 |
KR20000005595A (en) | 2000-01-25 |
CN1239064A (en) | 1999-12-22 |
EP0963936B1 (en) | 2003-12-03 |
KR100337686B1 (en) | 2002-05-22 |
DE69913248D1 (en) | 2004-01-15 |
TW477773B (en) | 2002-03-01 |
JPH11349222A (en) | 1999-12-21 |
CN1262458C (en) | 2006-07-05 |
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