Package rewinding machine

Abstract

It accurately detects whether the mounting components have been properly positioned. [Solution] The winding unit 4, which winds the yarn unwound from the first package 7 into the second package 9, comprises a package mounting section 33 having a first rotating shaft 33a rotatably attached to the main body 31, and a plurality of mounting members 33c that are members for attaching the first package 7 and are movable in accordance with the rotation of the first rotating shaft 33a, a drive mechanism 35 that rotates the first rotating shaft 33a, and a sensor 37 that detects when one of the plurality of mounting members 33c is in a first position. The sensor 37 is positioned to detect the presence of other mounting members 33c when one of the plurality of mounting members 33c is in the first position.

Description

Technical Field

[0001] The present invention relates to a package rewinder that winds the yarn unwound from a first package onto a second package.

Background Art

[0002] Conventionally, an apparatus is known that unwinds yarn from a package, winds the unwound yarn onto another tube, and then winds it onto a new package (see, for example, Patent Document 1). This apparatus has a mechanism for supplying the package from which the yarn is unwound to the winding apparatus of the new package. This mechanism has a plurality of attachment members for attaching the package from which the yarn is unwound. Each of the plurality of attachment members is movable between an attachment position for attaching the package to the attachment member by rotation of a predetermined rotation axis and an unwinding position for unwinding the yarn from the package and supplying the yarn to the winding apparatus.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described mechanism for supplying the package to the winding apparatus, it is necessary to accurately supply the package from which the yarn is unwound to the above-described unwinding position. When the package is supplied to a position deviated from the unwinding position, an excessive tension acts on the unwound yarn, so it is necessary to reduce the yarn speed when winding the yarn onto the new package. As a result, the production efficiency of the new package decreases. For this reason, in the above-described mechanism, in order to accurately supply the package to the unwinding position, the position of the attachment member is adjusted to determine a reference position, and the movement of the attachment member is controlled based on the determined reference position.

[0005] Conventionally, it was not possible to detect whether the mounting members were properly positioned. Although the mounting members are positioned mechanically, there is a possibility that the position adjustment may not be accurate. Furthermore, if the mechanism is unexpectedly operated on after the position adjustment (for example, if another object collides with the mechanism), the position adjustment may be shifted.

[0006] If the position adjustment is improper or shifted due to unexpected operation, the movement control of the mounting member may be based on a position shifted from the original reference position, potentially preventing the package from being accurately supplied to the unpacking position.

[0007] The objective of this invention is to accurately detect whether the position of the mounting member to which the yarn unwinding package is attached has been properly adjusted. [Means for solving the problem]

[0008] Several embodiments for solving the problem are described below. These embodiments can be combined as needed. A package rewinding machine according to one aspect of the present invention is a device for winding yarn unwound from a first package onto a second package. The package rewinding machine comprises a main body, a package mounting section, a drive mechanism, and a sensor. The package mounting section has a first rotating shaft and a plurality of mounting members. The first rotating shaft is rotatably mounted to the main body. The mounting members are members for mounting the first package and are movable in accordance with the rotation of the first rotating shaft. The drive mechanism rotates the first rotating shaft of the package mounting section. The sensor detects that a detection target, which is one of the plurality of mounting members, is in a predetermined first position. In the above package rewinding machine, the sensor is provided at a detection position that detects the presence of other mounting members among the plurality of mounting members when the detection target is in the first position.

[0009] In the package winding machine described above, a sensor detects that one of the multiple mounting members (the target of detection) to which the first package for unwinding the thread is attached is in a predetermined first position by detecting mounting members other than the target of detection. In this way, if the presence of the target mounting member in the first position can be detected by the sensor detecting other mounting members, it is possible to confirm whether the target mounting member has been accurately positioned in the first position.

[0010] As a result, for example, if one mounting member is positioned so that it is detected by the sensor, the other mounting members that are not detected by the sensor will be precisely positioned at the first position. Furthermore, even if the positional adjustment is shifted due to an accidental operation, the shifted position can be corrected by readjusting the position so that one of the mounting members is detected by the sensor.

[0011] Furthermore, in the package rewinding machine described above, a sensor is provided at a detection position that detects other mounting members among multiple mounting members when the mounting member to be detected is in the first position. This eliminates the need to perform maintenance work on the sensor near the first position, for example, making sensor maintenance easier. It also increases the flexibility of the sensor's mounting position.

[0012] In the package winding machine described above, the first position may be the unwinding position, which is the position of the first package when unwinding the yarn. This allows for accurate determination of whether the mounting member to be detected is in the unwinding position.

[0013] In the package rewinding machine described above, the first position may be other than the unwinding position. This allows the mounting member to be placed in the unwinding position by moving it by a predetermined amount after the sensor detects a mounting member other than the target of detection. In other words, the first package can be accurately placed in the unwinding position by moving the mounting member by a predetermined amount after the sensor detects a mounting member other than the target of detection.

[0014] In the package rewinding machine described above, the package mounting section may further include rod-shaped members extending uniformly from the first rotation axis. In this case, each of the multiple mounting members may be rotatably provided around a second rotation axis parallel to the first rotation axis at one of the multiple ends of the rod-shaped member. This allows the mounting members to be oriented according to their placement position.

[0015] In the package rewinding machine described above, the sensor may be a Hall element. In this case, a magnet detectable by the Hall element may be provided on the second rotating shaft. This allows for the detection of the mounting member provided on the second rotating shaft with a simple configuration.

[0016] In the package rewinding machine described above, the sensor may be fixed to the main body via a position adjustment member that adjusts the mounting position of the sensor. This allows for easy adjustment of the mounting position of the sensor relative to the main body.

[0017] In the package rewinding machine described above, the detection position may be set in front of the main body, beyond the unwinding position where the thread is unwound from the first package. In the package rewinding machine, the part of the main body in front of the unwinding position is in a position that is easily accessible to the operator, so by installing the sensor in this front part, maintenance of the sensor is made easier.

[0018] In the package rewinding machine described above, the drive mechanism may include a stepping motor as a drive source for rotating the first rotating shaft. This allows for high-precision control of the movement of the mounting member.

[0019] In the package rewinding machine described above, the drive mechanism may include a first circular member attached to a first rotating shaft and having a first diameter, and a second circular member attached to a drive source and having a second diameter smaller than the first diameter, which transmits the driving force of the drive source to the first circular member. That is, the stepping motor may be connected to the first rotating shaft via a reduction mechanism. This allows even heavy first packages to be moved easily.

[0020] In the above package rewinder, the drive mechanism may include a cam groove provided in the second circular member and a suppression member that fits into the cam groove to suppress the rotation of the second circular member. Thereby, it is possible to prevent the attachment member from moving unintentionally due to the gravity of the first package or the like.

[0021] In the above package rewinder, the second circular member may be provided with a long hole for adjusting the position of the cam groove. Thereby, it is possible to easily adjust the position of the attachment member.

Advantages of the Invention

[0022] By detecting that the attachment member to be detected is in the first position by detecting other attachment members with a sensor, it is possible to confirm whether the attachment member to be detected is accurately positioned in the first position. Further, when the attachment member to be detected is in the first position, by providing a sensor at the detection position for detecting other attachment members, the maintenance work of the sensor becomes easy.

Brief Description of the Drawings

[0023] [Figure 1] Perspective view showing the configuration of the automatic winder. [Figure 2] View showing the configuration of the winding unit. [Figure 3] View of the package supply device as seen from the package attachment portion side. <​​​​​​​​​​​​​​​​​

[0025] The main frame 2 forms the framework of the automatic winder 1. Multiple winding units 4 are mounted on the main frame 2 and arranged in a row. Each of the multiple winding units 4 forms a second package 9 by unwinding and winding yarn from a first package 7 set in a package supply device 3 (Figure 2). The winding units 4 can also be called package rewinding machines.

[0026] The machine control unit is located at one end of the main frame 2 in the direction in which the multiple winding units 4 are arranged. The machine control unit comprehensively controls the winding units 4 by communicating with the unit controller 90 (Figure 2) provided in each winding unit 4.

[0027] (2) Winding unit The winding unit 4 will be described below using Figure 2. Figure 2 is a diagram showing the configuration of the winding unit 4. The winding unit 4 includes a package supply device 3, a yarn winding section 5, a yarn splicing section 8, a unit controller 90, and a winding controller 91.

[0028] The package supply device 3 is located at the bottom of the main frame 2. The package supply device 3 is removably set to supply the first package 7 for winding back into the second package 9. The package supply device 3 is mounted to the bottom of the main frame 2 so as to rest on the bottom plate of the main frame 2.

[0029] The yarn winding unit 5 winds the yarn supplied from the package supply device 3 onto a core tube (paper tube) to form the second package 9. The yarn winding unit 5 is mounted on the upper part of the main frame 2. The yarn winding unit 5 includes a winding bobbin 51, a cradle 52, and a swivel drum 53.

[0030] The winding bobbin 51 winds the yarn supplied from the package supply device 3 around its outer circumference to form the second package 9. The winding bobbin 51 is held in the cradle 52. The cradle 52 is capable of swinging toward or toward the ridge drum 53. This allows the cradle 52 to bring the second package 9 into contact with or away from the ridge drum 53.

[0031] The traverse drum 53 traverses the yarn and rotates the winding bobbin 51. A spiral traverse groove is formed on the outer surface of the traverse drum 53, and the yarn is wound onto the winding bobbin 51 while traversing at a constant width by this groove. This makes it possible to form a second package 9 with a constant winding width.

[0032] The thread splice section 8 is located in the middle of the main frame 2 in the vertical direction, specifically above the location where the package supply device 3 is installed and below the location where the thread winding section 5 is installed. The thread splice section 8 connects (splices) the broken thread when the thread supplied from the package supply device 3 to the thread winding section 5 breaks. The thread splice section 8 includes a thread monitoring device 71, a splicer 72, a lower thread guide pipe 73, an upper thread guide pipe 74, and a tension applying device 75.

[0033] The yarn monitoring device 71 detects defects such as slabs (hereinafter sometimes referred to as yarn defects) that occur in the yarn by monitoring the thickness of the yarn. A cutter is positioned near the yarn monitoring device 71 to immediately cut the yarn when the yarn monitoring device 71 detects a yarn defect.

[0034] The splicer 72 splices the yarn from the package supply device 3 to the yarn from the yarn winding unit 5 when the yarn monitoring device 71 detects a yarn defect and cuts the yarn with a cutter, when the yarn breaks while being unwound from the first package 7, or when the first package 7 is replaced. The splicer 72 can be, for example, a device that splices yarns by twisting them together with compressed air.

[0035] The bobbin guide pipe 73 is rotatably positioned below the splicer 72. A suction port is formed at the tip of the bobbin guide pipe 73. A suction flow can be generated at the suction port by suction from a suction source (e.g., a blower duct). The upper thread guide pipe 74 is rotatably positioned above the splicer 72. A suction mouth is formed at the tip of the upper thread guide pipe 74. A suction flow can be generated at the suction mouth by suction from a suction source.

[0036] When the thread is cut, the suction port of the lower thread guide pipe 73 rotates downward to suck and capture the lower thread, and then rotates upward to guide the lower thread to the splicer 72. In addition, the suction mouth of the upper thread guide pipe 74 sucks and captures the upper thread unwound from the second package 9, and then rotates downward to guide the upper thread to the splicer 72. The lower and upper threads are then joined together in the splicer 72.

[0037] The tension-applying device 75 applies a predetermined tension to the running thread. The tension-applying device 75 can be configured, for example, as a gate type in which movable comb teeth are arranged relative to fixed comb teeth. The movable comb teeth are biased so that they interlock with each other. By passing the thread through the interlocked comb teeth while bending it, an appropriate tension can be applied to the thread.

[0038] The unit controller 90 and the winding controller 91 are computer systems composed of arithmetic circuits such as a CPU, storage devices such as ROM and RAM, and various interfaces. The storage devices of the unit controller 90 and the winding controller 91 store software such as control programs that control the winding unit 4 when executed by these controllers.

[0039] Specifically, the winding controller 91 controls the winding operation of the thread winding unit 5. The unit controller 90 is a higher-level control unit than the winding controller 91, and controls the winding controller 91 as well as comprehensively controlling the entire winding unit 4, including the thread splicing unit 8 and the package supply device 3. The unit controller 90 is capable of communicating with the machine control unit of the automatic winder 1.

[0040] (3) Package supply device The details of the package supply device 3 will be explained below using Figures 2 to 4. Figure 3 is a view of the package supply device 3 from the package mounting section 33 side. Figure 4 is a view of the package supply device 3 from the drive mechanism 35 side.

[0041] The package supply device 3 is set to replaceable first package 7, which supplies the thread to be wound onto the second package 9. Specifically, the package supply device 3 is a device that moves the first package 7 between the unwinding position P1 and the setting position P2. The unwinding position P1 is the position where the first package 7 is placed to unwind the thread. On the other hand, the setting position P2 is the position for removing the empty bobbin and attaching the first package 7.

[0042] The package supply device 3 comprises a main body 31, a package mounting section 33, a drive mechanism 35, and a sensor 37. The main body 31 constitutes the main body of the package supply device 3. The main body 31 is located at the bottom of the main frame 2.

[0043] The package mounting section 33 attaches the first package 7 and moves the attached first package 7 between the unpacking position P1 and the set position P2. The package mounting section 33 has a first rotating shaft 33a, a rod-shaped member 33b, and a plurality of mounting members 33c.

[0044] The first rotating shaft 33a is rotatably mounted on the main body 31, on the front side of the winding unit 4. The first rotating shaft 33a is connected to the drive mechanism 35. That is, the first rotating shaft 33a rotates due to the drive of the drive mechanism 35.

[0045] The rod-shaped member 33b is a member that extends uniformly from the first rotation axis 33a. Specifically, the rod-shaped member 33b is a member that extends in one direction, and the center of the rod-shaped member 33b is fixed to the first rotation axis 33a. In other words, the rod-shaped member 33b has two ends, and the distance from the first rotation axis 33a to one end is equal to the distance from the first rotation axis 33a to the other end. Therefore, the ends of the rod-shaped member 33b can move along a circular orbit due to the rotation of the first rotation axis 33a.

[0046] The mounting member 33c is positioned at the end of the rod-shaped member 33b and is a member for attaching the first package 7. In this embodiment, there are two mounting members 33c. One mounting member 33c is positioned at one end of the rod-shaped member 33b extending in one direction, and the other mounting member 33c is positioned at the other end of the rod-shaped member 33b.

[0047] The mounting member 33c is fixed to one end of the arm member 33d on the side opposite to the side into which the first package 7 is inserted. A disc-shaped disc member 33e having a diameter greater than or equal to the maximum diameter of the first package 7 is attached between the mounting member 33c and the arm member 33d.

[0048] A second rotation axis is provided at the end of the arm member 33d opposite to the end to which the mounting member 33c is fixed. The second rotation axis is parallel to the first rotation axis and is rotatably attached to the end of the rod-shaped member 33b. In other words, the arm member 33d is rotatable at the end of the rod-shaped member 33b around the second rotation axis, which is parallel to the first rotation axis 33a. As a result, the mounting member 33c is rotatable at the end of the rod-shaped member 33b due to the rotation of the arm member 33d around the second rotation axis accompanying the rotation of the end of the rod-shaped member 33b.

[0049] The package mounting section 33 further comprises a lever member 33f, a first guide section 33g, and a second guide section 33h (Figure 5). Figure 5 is an enlarged view of the second guide section 33h. One end of the lever member 33f is fixed to a second rotation axis that rotates the arm member 33d. A projection 33i is provided at the end of the lever member 33f opposite to the end fixed to the second rotation axis.

[0050] The first guide section 33g is composed of a pair of inclined longitudinal members provided at the front lower part of the main body section 31. As the mounting member 33c moves from the unwinding position P1 to the set position P2, the projection 33i of the lever member 33f is guided between the pair of longitudinal members of the first guide section 33g. This guidance determines the orientation of the lever member 33f, which in turn determines the orientation of the mounting member 33c at the set position P2. At the set position P2, the mounting member 33c is oriented inclined toward the front of the winding unit 4. By oriented inclined toward the front of the winding unit 4, the empty bobbin can be easily removed from the mounting member 33c and the first package 7 can be easily attached to the mounting member 33c at the set position P2.

[0051] The second guide section 33h is composed of an inclined longitudinal member provided on the front upper part of the main body section 31. As the mounting member 33c moves from the set position P2 to the unwinding position P1, the projection 33i of the lever member 33f is guided by the upper part of the longitudinal member of the second guide section 33h. This guidance determines the orientation of the lever member 33f, which in turn determines the orientation of the mounting member 33c at the unwinding position P1. At the unwinding position P1, the mounting member 33c is oriented slightly inclined toward the rear side of the winding unit 4. This allows for proper unwinding of the yarn from the first package 7 and supply of the yarn to the yarn winding section 5 at the unwinding position P1.

[0052] Returning to the description of the package supply device 3, the drive mechanism 35 rotates the first rotating shaft 33a of the package mounting section 33, thereby moving the mounting member 33c of the package mounting section 33 between the unwinding position P1 and the set position P2. The drive mechanism 35 reduces the rotation of the drive source 35a and transmits it to the first rotating shaft 33a. Specifically, the drive mechanism 35 includes the drive source 35a, a first circular member 35b, a second circular member 35c, and a connecting member 35d.

[0053] The drive source 35a supplies the driving force to rotate the package mounting section 33. The drive source 35a is, for example, a stepping motor. A stepping motor is a motor whose rotation amount can be precisely controlled by pulse signals. Therefore, by using a stepping motor as the drive source 35a, the movement of the mounting member 33c of the package mounting section 33 can be controlled with high precision. In other words, the position of the mounting member 33c can be precisely controlled.

[0054] The drive source 35a is connected to the unit controller 90 and controlled by the unit controller 90.

[0055] The first circular member 35b is fixed to the first rotation axis 33a of the package mounting portion 33 on the side of the main body portion 31 opposite to the side where the package mounting portion 33 is provided. The first circular member 35b has a first diameter. The first circular member 35b is, for example, a sprocket having a first number of teeth.

[0056] The second circular member 35c is fixed to the output rotating shaft of the drive source 35a (stepping motor) on the side of the main body 31 opposite to the side where the package mounting portion 33 is provided. The second circular member 35c has a second diameter smaller than the first diameter of the first circular member 35b and transmits the driving force of the drive source 35a to the first circular member 35b. The second circular member 35c is, for example, a sprocket having a second number of teeth that is fewer than the first number of teeth of the first circular member 35b.

[0057] The connecting member 35d is a member that spans between the first circular member 35b and the second circular member 35c, connecting the first circular member 35b and the second circular member 35c. That is, the connecting member 35d transmits the rotation of the second circular member 35c, which is rotationally driven by the drive source 35a, to the first circular member 35b. Since the first circular member 35b and the second circular member 35c are sprockets, the connecting member 35d is, for example, an endless chain.

[0058] As described above, the second diameter of the second circular member 35c fixed to the drive source 35a is smaller than the first diameter of the first circular member 35b fixed to the first rotating shaft 33a. Therefore, the first circular member 35b, the second circular member 35c, and the connecting member 35d constitute a reduction mechanism that reduces the rotation of the drive source 35a and transmits it to the first rotating shaft 33a. In other words, the drive source 35a is connected to the first rotating shaft 33a via this reduction mechanism.

[0059] By connecting the drive source 35a to the first rotating shaft 33a via a reduction mechanism, the rotation of the drive source 35a can be reduced and transmitted to the first rotating shaft 33a, allowing the first rotating shaft 33a (i.e., the package mounting section 33) to be rotated with a large torque. By rotating the package mounting section 33 with a large torque, the heavy first package 7 attached to the end of the rod-shaped member 33b can be easily moved by the rotation of the drive source 35a.

[0060] The drive mechanism 35 has a restraining mechanism to prevent the package mounting portion 33 from moving unintentionally due to gravity from the first package 7. Specifically, the drive mechanism 35 has a cam groove 35e, a restraining member 35f, and a biasing member 35g as the restraining mechanism.

[0061] The cam groove 35e is a recess formed in the disc member 35h. The cam groove 35e is positioned on the disc member 35h in the circumferential direction to correspond to the arrangement of the multiple mounting members 33c in the package mounting portion 33. As described above, in the package mounting portion 33 of this embodiment, two mounting members 33c are positioned on the rod-shaped member 33b at a 180-degree interval. Therefore, in this embodiment, two cam grooves 35e are positioned on the disc member 35h at a 180-degree interval. This prevents either of the two mounting members 33c from moving at a specific, identical position.

[0062] The disc member 35h is fixed to the second circular member 35c by a screw that passes through an elongated hole 35i provided in the second circular member 35c. This allows the fixing position of the disc member 35h relative to the second circular member 35c to be adjusted, thereby adjusting the position of the cam groove 35e relative to the second circular member 35c.

[0063] The restraining member 35f is rotatably mounted on the main body 31. One end of the restraining member 35f is connected to the biasing member 35g, and the other end of the restraining member 35f is biased by the biasing member 35g to contact the disc member 35h. The biasing member 35g is, for example, an elastic member such as a spring.

[0064] When the other end of the restraining member 35f reaches the same position as the cam groove 35e of the disc member 35h, the other end of the restraining member 35f is biased by the biasing member 35g so that it fits into the cam groove 35e. By biasing the other end of the restraining member 35f so that it fits into the cam groove 35e, the restraining member 35f functions like a "wheel stopper" against the rotation of the disc member 35h, thereby preventing the disc member 35h, the first circular member 35b, and the second circular member 35c from rotating unintentionally (i.e., independently of the driving force of the drive source 35a) due to gravity from the first package 7 attached to the package mounting portion 33.

[0065] The position of the disc member 35h relative to the second circular member 35c is adjusted so that, for example, when one of the two mounting members 33c of the package mounting section 33 is in the unwinding position P1 and the other is in the set position P2, the suppression member 35f fits into the cam groove 35e. This prevents the mounting member 33c (first package 7) in the unwinding position P1 from unintentionally moving due to gravity of the first package 7 attached to the mounting member 33c in the set position P2.

[0066] The drive mechanism 35 has a tension adjustment section 35j. The tension adjustment section 35j is rotatably attached to the main body section 31. A third circular member 35k (for example, a sprocket) that contacts the connecting member 35d is provided at one end of the tension adjustment section 35j. By rotating the tension adjustment section 35j to adjust the contact position of the third circular member 35k with the connecting member 35d, the tension of the connecting member 35d, which is spanned between the first circular member 35b and the second circular member 35c, can be adjusted.

[0067] Returning to the description of the package supply device 3, the sensor 37 is fixed to the front upper part of the main body 31. The sensor 37, fixed in this position, detects the mounting member 33c which is in the set position P2.

[0068] As described above, in the package mounting section 33, the two mounting members 33c are provided on the rod-shaped member 33b with a 180-degree gap between them, and when one of the two mounting members 33c is in the set position P2, the other is in the unfolded position P1. Therefore, when the sensor 37 detects the mounting member 33c in the set position P2, it means that the other mounting member 33c is in the unfolded position P1. In other words, the sensor 37 detects that the other mounting member 33c is in the set position P2 in order to detect that one mounting member 33c is in the unfolded position P1. To put it another way, the sensor 37 is provided at a position (corresponding to the set position P2) that detects the other mounting member 33c in the set position P2 when the mounting member 33c to be detected is in the unfolded position P1.

[0069] The sensor 37 is provided to detect that the mounting member 33c, which is the object to be detected, is in the uncoordinated position P1. However, by installing the sensor 37 in a position other than the position corresponding to the uncoordinated position P1 (for example, the lower rear of the main body 31), it becomes unnecessary to perform maintenance work on the sensor 37 near the uncoordinated position P1 (for example, adjusting the position of the sensor 37, replacing the sensor 37, etc.), thus simplifying maintenance work on the sensor 37. Furthermore, it is possible to increase the degree of freedom in the mounting position of the sensor 37.

[0070] In particular, by providing the sensor 37 at a position corresponding to the set position P2, which is in front of the main body 31 than the unwinding position P1, maintenance of the sensor 37 can be made even easier. This is because the area near the set position P2, which is in front of the main body 31 than the unwinding position P1, is the position where the empty bobbin is removed from the mounting member 33c and / or the first package 7 is attached to the mounting member 33c, and is therefore wide and easily accessible to the operator.

[0071] The sensor 37 is fixed to the main body 31 via a position adjustment member 37a. The position adjustment member 37a is a plate-shaped member that secures the sensor 37. The position adjustment member 37a is fixed to the main body 31 by a screw that passes through an elongated hole provided in the front upper part of the main body 31. This allows for easy adjustment of the mounting position of the sensor 37 on the main body 31 by adjusting the fixing position of the position adjustment member 37a relative to the main body 31.

[0072] In this embodiment, the sensor 37 is a Hall element. In this case, a magnet is provided on the second rotation axis of the arm member 33d of the package mounting portion 33. The sensor 37 can detect the position of the mounting member 33c by detecting the magnetic field from the magnet provided on the second rotation axis of the arm member 33d. In addition to providing a magnet on the second rotation axis, the second rotation axis can also be made of a magnetic material.

[0073] (4) Operation of the package supply device The following briefly describes the operation of supplying the first package 7 to the unwinding position P1 by the package supply device 3. First, the position of the mounting member 33c provided on the package mounting section 33 is adjusted. This position adjustment is performed, for example, when the winding unit 4 is installed, during maintenance, or when the package supply device 3 determines that the position adjustment has shifted.

[0074] Specifically, first, the package mounting section 33 is rotated so that one of the mounting members 33c is detected by the sensor 37. As a result, one of the mounting members 33c is positioned at the uncooled position P1, and the other mounting member 33c is positioned at the set position P2. Next, with one of the mounting members 33c positioned at the uncooled position P1 and the other mounting member 33c at the set position P2, the position of the disc member 35h relative to the second circular member 35c is adjusted so that the suppression member 35f fits into the cam groove 35e of the disc member 35h. This prevents the package mounting section 33 from rotating unintentionally due to gravity or the like when the two mounting members 33c are in the uncooled position P1 and the set position P2, respectively.

[0075] With the mounting member 33c in the adjusted position, the first package 7 is set on the mounting member 33c at the set position P2. Then, from the state in which the mounting member 33c at the set position P2 is detected by the sensor 37, the unit controller 90 outputs a control signal to the drive source 35a to rotate by a predetermined amount, thereby moving the first package 7 attached to the mounting member 33c at the set position P2 from the set position P2 to the unwinding position P1. Specifically, the unit controller 90 outputs a predetermined number of pulse signals to the drive source 35a, which is a stepping motor, and / or outputs control signals until the mounting member 33c is detected again by the sensor 37.

[0076] After moving the first package 7 to the unwinding position P1, the yarn is unwound from the first package 7 and supplied to the yarn winding unit 5, and the second package 9 can be formed by winding the unwound yarn with the yarn winding unit 5.

[0077] In the package supply device 3 described above, the sensor 37 detects that one of the multiple mounting members 33c is in a predetermined unwinding position P1 by detecting the presence of the other mounting members 33c. In this way, if the sensor 37 can detect the presence of the other mounting members 33c that any of the mounting members 33c is in the unwinding position P1, it is possible to confirm whether the mounting member 33c has been accurately positioned at the unwinding position P1.

[0078] As a result, for example, if the position of any of the mounting members 33c is adjusted so that it is detected by the sensor 37, the other mounting members 33c that are not detected by the sensor 37 will be accurately adjusted to the release position P1. Furthermore, even if the position adjustment may have shifted due to an accidental operation, the shifted position adjustment can be corrected by readjusting the position of any of the mounting members 33c so that it is detected by the sensor 37.

[0079] Furthermore, as described above, in the package supply device 3, the unit controller 90 detects the mounting member 33c at the set position P2 using the sensor 37, and then rotates the drive source 35a by a predetermined amount of rotation, thereby accurately moving the mounting member 33c from the uncooled position P1 to the set position P2, or from the set position P2 to the uncooled position P1. In other words, in the package supply device 3, the uncooled position P1 or set position P2 detected by the sensor 37 of the mounting member 33c can be used as the reference position for controlling the movement of the mounting member 33c.

[0080] Furthermore, by determining that the detection of mounting member 33c by sensor 37 is equivalent to the other mounting member 33c being in the uncooled position P1, it becomes easier to control the movement of the other mounting member 33c to the uncooled position P1. Specifically, by stopping the rotation of the drive source 35a at the timing when mounting member 33c is detected by sensor 37, the other mounting member 33c can be stopped in the uncooled position P1.

[0081] 2. Other Embodiments Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit of the invention. In particular, the multiple embodiments and modifications described herein can be arbitrarily combined as needed. (A) When any of the mounting members 33c is in a position different from the unwinding position P1, the sensor 37 can also be provided at a position to detect the other mounting members 33c.

[0082] In this case, the detection of mounting member 33c by sensor 37 does not mean that the other mounting members 33c are in the uncooled position P1. However, by further rotating the drive source 35a by a predetermined amount after the mounting member 33c is detected by sensor 37, the other mounting members 33c can be accurately moved to the uncooled position P1. In other words, the reference position for controlling the movement of the mounting members 33c can be set to any position other than the uncooled position P1 or the set position P2.

[0083] (B) The number of mounting members 33c provided on the package mounting section 33 can be arbitrary. In this case, the sensor 37 may be used to determine which mounting member 33c is being detected. This makes it easy to determine which mounting member 33c is at the reference position, for example, based on the positional relationship between the mounting position of the sensor 37 and the reference position (e.g., the unwinding position P1), the direction of movement (rotation) of the package mounting section 33, etc.

[0084] (C) The drive mechanism for driving the package mounting portion 33 may be configured other than the first circular member 35b and the second circular member 35c which are sprockets and the connecting member 35d which is an endless chain. For example, the first circular member 35b and the second circular member 35c may be pulleys and the connecting member 35d may be an endless belt stretched over these pulleys.

[0085] Alternatively, the first circular member 35b and the second circular member 35c can be used as gears, and the gear of the first circular member 35b and the gear of the second circular member 35c can be directly meshed together. In this case, the connecting member 35d is not required.

[0086] 3. Features of the Embodiment The above embodiment can also be described as follows. (1) The package rewinding machine (e.g., winding unit 4) is a device that winds yarn unwound from a first package (e.g., first package 7) onto a second package (e.g., second package 9). The package rewinding machine comprises a main body (e.g., main body 31), a package mounting section (e.g., package mounting section 33), a drive mechanism (e.g., drive mechanism 35), and a sensor (e.g., sensor 37). The package mounting section has a first rotating shaft (e.g., first rotating shaft 33a) and a plurality of mounting members (e.g., mounting members 33c). The first rotating shaft is rotatably mounted to the main body. The mounting members are members for mounting the first package and are movable in accordance with the rotation of the first rotating shaft. The drive mechanism rotates the first rotating shaft of the package mounting section. The sensor detects that one of the plurality of mounting members, which is the object to be detected, is in a predetermined first position (e.g., unwound position P1). In the package rewinding machine described above, the sensor is installed at a detection position (for example, a position corresponding to set position P2) that detects the presence of other mounting members among the multiple mounting members when the object to be detected is in the first position.

[0087] In the package winding machine described above, a sensor detects that one of the multiple mounting members (the target of detection) to which the first package for unwinding the thread is attached is in a predetermined first position by detecting mounting members other than the target of detection. In this way, if the presence of the target mounting member in the first position can be detected by the sensor detecting other mounting members, it is possible to confirm whether the target mounting member has been accurately positioned in the first position.

[0088] As a result, for example, if one mounting member is positioned so that it is detected by the sensor, the other mounting members that are not detected by the sensor will be precisely positioned at the first position. Furthermore, even if the positional adjustment is shifted due to an accidental operation, the shifted position can be corrected by readjusting the position so that one of the mounting members is detected by the sensor.

[0089] Furthermore, in the package rewinding machine described above, a sensor is provided at a detection position that detects other mounting members among multiple mounting members when the mounting member to be detected is in the first position. This eliminates the need to perform maintenance work on the sensor near the first position, for example, making sensor maintenance easier. It also increases the flexibility of the sensor's mounting position.

[0090] (2) In the package winding machine described in (1) above, the first position may be the unwinding position (for example, unwinding position P1), which is the position of the first package when unwinding the yarn. This makes it possible to accurately determine that the mounting member to be detected is in the unwinding position.

[0091] (3) In the package rewinding machine described in (1) above, the first position may be other than the unwinding position. This allows the mounting member to be placed in the unwinding position by moving the mounting member by a predetermined amount after the sensor has detected a mounting member other than the target of detection. In other words, the first package can be accurately placed in the unwinding position by moving the mounting member by a predetermined amount after the sensor has detected a mounting member other than the target of detection.

[0092] (4) In any of the package rewinding machines described in (1) to (3) above, the package mounting section may further include rod-shaped members (for example, rod-shaped members 33b) extending uniformly from the first rotation axis. In this case, each of the multiple mounting members may be rotatably provided on one of the multiple ends of the rod-shaped member around a second rotation axis parallel to the first rotation axis. This allows the mounting members to be oriented according to their placement position.

[0093] (5) In the package rewinding machine described in (4) above, the sensor may be a Hall element. In this case, a magnet detectable by the Hall element may be provided on the second rotating shaft. This allows for the detection of the mounting member provided on the second rotating shaft with a simple configuration.

[0094] (6) In any of the package rewinding machines described in (1) to (5) above, the sensor may be fixed to the main body via a position adjustment member that adjusts the mounting position of the sensor. This makes it easy to adjust the mounting position of the sensor to the main body.

[0095] (7) In any of the package rewinding machines described in (1) to (6) above, the detection position may be set in front of the main body of the unwinding position where the thread is unwound from the first package. In a package rewinding machine, the part of the main body in front of the unwinding position is in a position that is easily accessible to the operator, so by installing the sensor in this front part, maintenance of the sensor is made easier.

[0096] (8) In any of the package rewinding machines described in (1) to (7) above, the drive mechanism may have a stepping motor as a drive source (for example, drive source 35a) for rotating the first rotating shaft. This allows for high-precision control of the movement of the mounting member.

[0097] (9) In the package rewinding machine described in (8) above, the drive mechanism may include a first circular member (e.g., a first circular member 35b) attached to a first rotating shaft and having a first diameter, and a second circular member (e.g., a second circular member 35c) attached to a drive source and having a second diameter smaller than the first diameter, which transmits the driving force of the drive source to the first circular member. That is, the stepping motor may be connected to the first rotating shaft via a reduction mechanism. This allows even heavy first packages to be moved easily.

[0098] (10) In the package rewinding machine described in (9) above, the drive mechanism may include a cam groove (e.g., cam groove 35e) provided on the second circular member and a restraining member (e.g., restraining member 35f) that fits into the cam groove to suppress the rotation of the second circular member. This prevents the mounting member from moving unintentionally due to gravity from the first package or the like.

[0099] (11) In the package rewinding machine described in (10) above, the second circular member may be provided with an elongated hole (for example, an elongated hole 35i) for adjusting the position of the cam groove. This makes it easy to adjust the position of the mounting member. [Industrial applicability]

[0100] The present invention can be widely applied to a package winding machine that winds yarn unwound from a first package into a second package. [Explanation of Symbols]

[0101] 1: Automatic winder 2: Mainframe 3: Package supply device 4: Winding Unit 5: Thread winding section 7: Package 1 8: Thread joint 9: Second package 31: Main body 33: Package mounting section 33a: First axis of rotation 33b: Rod-shaped member 33c: Mounting components 33d: Arm component 33e: Disc member 33f: Lever component 33g: First guide section 33h: Second Guide Department 33i: Protrusion 35: Drive mechanism 35a: Power source 35b: First circular member 35c: Second circular member 35d: Connecting member 35e: Cam groove 35f: Suppression member 35g: biasing member 35h: Disc component 35i: Long hole 35j: Tension adjustment section 35k: Third circular member 37: Sensor 37a: Position adjustment member 51: Winding bobbin 52: Cradle 53: Ayaburi Drum 71: Thread monitoring device 72: Splicer 73: Bobbin thread guide pipe 74: Upper thread guide pipe 75: Tensioning device 90: Unit Controller 91: Winding Controller P1: Unwinding position P2: Set position

Claims

1. A package winding machine that winds yarn unwound from the first package into the second package, The main body and A package mounting section having a first rotating shaft rotatably attached to the main body, and a plurality of mounting members that are members for attaching the first package and are movable in accordance with the rotation of the first rotating shaft, A drive mechanism that rotates the first rotating shaft of the package mounting portion, A sensor that detects that the object to be detected, which is one of the plurality of mounting members, is in a predetermined first position, Equipped with, The sensor is provided at a detection position that detects the presence of other mounting members among the plurality of mounting members when the object to be detected is in the first position. Package rewinding machine.

2. The package mounting portion further comprises a rod-shaped member extending uniformly from the first rotation axis, The package rewinding machine according to claim 1, wherein each of the multiple mounting members is rotatably mounted on one of the multiple ends of the rod-shaped member so as to be about a second rotation axis parallel to the first rotation axis.

3. The aforementioned sensor is a Hall element, The package rewinding machine according to claim 2, wherein the second rotating shaft is provided with a magnet detectable by the Hall element.

4. The package rewinding machine according to any one of claims 1 to 3, wherein the sensor is fixed to the main body via a position adjustment member that adjusts the mounting position of the sensor.

5. The package rewinding machine according to any one of claims 1 to 4, wherein the detection position is set in front of the main body of the unwinding position for unwinding the thread from the first package.

6. The package rewinding machine according to any one of claims 1 to 5, wherein the drive mechanism has a stepping motor as a drive source for rotating the first rotating shaft.

7. The aforementioned drive mechanism is A first circular member having a first diameter and attached to the first rotating shaft, A second circular member is attached to the drive source, has a second diameter smaller than the first diameter, and transmits the driving force of the drive source to the first circular member, A package rewinding machine according to claim 6, comprising the features described above.

8. The aforementioned drive mechanism is The cam groove provided in the second circular member, A restraining member that fits into the cam groove to suppress the rotation of the second circular member, A package rewinding machine according to claim 7, having the following features.

9. The package rewinding machine according to claim 8, wherein the second circular member is provided with an elongated hole for adjusting the position of the cam groove.

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