Package rewinding machine

Abstract

The invention provides a package rewinding machine, which can accurately detect whether the position of a mounting member is properly adjusted or not. A package rewinding machine (4) for winding a yarn unwound from a first package (7) onto a second package (9) includes: a package mounting portion (33) having a first rotating shaft (33a) rotatably mounted to a main body portion (31) and a plurality of mounting members (33c) to which the first package (7) is mounted and which are movable along with rotation of the first rotating shaft (33a); a drive mechanism (35) that rotationally drives the first rotating shaft (33a); and a sensor (37) that detects that one of the plurality of attachment members (33c) is located at the first position. The sensor (37) is provided at a position at which the presence of another attachment member (33c) is detected when one of the plurality of attachment members (33c) is located at the first position.

Description

Technical Field

[0001] The invention relates to a rewinding machine for winding yarn from a first roll onto a second roll. Background Technology

[0002] Conventionally, there are known devices for unwinding yarn from a package and winding the unwound yarn onto another bobbin before winding it onto a new package (e.g., see JP2019-034847A). This device has a mechanism for supplying the unwound yarn package to a winding device for the new package. This mechanism has a plurality of mounting members for mounting the unwound yarn package. Each of these mounting members can be moved between a mounting position for mounting the package onto the mounting members and an unwinding position for unwinding the yarn from the package and supplying yarn to the winding device by rotation of a predetermined rotation axis.

[0003] In the mechanism that supplies the aforementioned package to the winding device, it is necessary to supply the unwound yarn package accurately to the aforementioned unwinding position. If the package is supplied to a position offset from the unwinding position, excessive tension acts on the unwound yarn; therefore, the yarn speed needs to be reduced when winding the yarn into a new package. As a result, the production efficiency of the new package decreases. Therefore, in the aforementioned mechanism, in order to accurately supply the package to the unwinding position, the position of the mounting member is adjusted to determine a reference position, and the movement of the mounting member is controlled based on the determined reference position.

[0004] Previously, there was no check to ensure that the position adjustment of the mounting components was appropriate. The position adjustment of the mounting components was performed mechanically, but there was a possibility that the position adjustment of the mounting components could not be performed accurately. In addition, if the above mechanism is operated unexpectedly after the position adjustment (for example, other objects collide with the above mechanism), the position adjustment may be offset.

[0005] In cases where the position is improperly adjusted or shifted due to accidental operation, the movement control of the mounting components, based on the position shifted from the original reference position, may fail to accurately supply the roll to the unwinding position. Summary of the Invention

[0006] The purpose of this invention is to accurately detect whether the position adjustment of the mounting component for mounting unwound yarn has been properly performed.

[0007] As a means to solve the problem, several methods are described below. These methods can be combined arbitrarily as needed.

[0008] One aspect of the present invention relates to a package rewinding machine that winds yarn unwound from a first package onto a second package. The package rewinding machine has 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 that mount the first package and are movable as the first rotating shaft rotates. The drive mechanism drives the first rotating shaft of the package mounting section to rotate. The sensor detects when one of the plurality of mounting members, i.e., the detection object, is located in a predetermined first position. In the above-described package rewinding machine, the sensor is positioned at a detection position where the presence of the other mounting members among the plurality of mounting members can be detected when the detection object is in the first position.

[0009] In the aforementioned roll rewinding machine, sensors are used to detect the installation components other than the target component to determine if one of the plurality of installation components (the target component) of the first roll of unwound yarn is located in a predetermined first position. Thus, if the target component can be detected in the first position by sensors detecting other installation components, it can be confirmed whether the target component has been accurately positioned to the first position.

[0010] As a result, for example, if a position adjustment is performed so that any one of the mounting components is detected by the sensor, the other mounting components that were not detected by the sensor are accurately positioned to the first position. Furthermore, even if the position adjustment is misaligned due to accidental operation, the misaligned position adjustment can be corrected simply by performing another position adjustment to detect any one of the mounting components using the sensor.

[0011] Furthermore, in the aforementioned roll-to-roll rewinder, when the mounting member to be detected is in the first position, sensors are provided at the detection positions of other mounting members among the plurality of mounting members. Therefore, for example, sensor maintenance work is not required near the first position, thus simplifying sensor maintenance. Additionally, the flexibility in sensor mounting position is increased.

[0012] In the aforementioned roll-to-rewind machine, the first position can also be the configuration position of the first roll during yarn unwinding, i.e., the unwinding position. This allows for accurate assessment of the location of the mounting component, which is the object of inspection, in the unwinding position.

[0013] In the aforementioned roll rewinding machine, the first position can also be a position other than the unwinding position. Therefore, after the sensor detects a mounting member other than the target object, by moving the mounting member by a predetermined amount, the mounting member being detected can be positioned in the unwinding position. That is, after the sensor detects a mounting member other than the target object, by moving the mounting member by a predetermined amount, the first roll can be accurately positioned in the unwinding position.

[0014] In the aforementioned roll rewinding machine, the roll mounting section may also include rod-shaped members extending equally from the first rotation axis. In this case, the plurality of mounting members may be rotatably disposed at one end of the plurality of ends of the rod-shaped member about a second rotation axis parallel to the first rotation axis. This allows the mounting members to be oriented in a direction corresponding to their placement position.

[0015] In the aforementioned winding and rewinding machine, the sensor can also be a Hall element. In this case, a magnet capable of being detected by the Hall element can also be provided on the second rotating shaft. This allows for easy detection of the mounting components provided on the second rotating shaft.

[0016] In the aforementioned winding and rewinding machine, the sensor can also be fixed to the main body via a position adjustment member that adjusts the sensor's mounting position. This allows for easy adjustment of the sensor's mounting position relative to the main body.

[0017] In the aforementioned package rewinding machine, the detection position can also be set further forward of the main body than the unwinding position from the first package of unwound yarn. In the package rewinding machine, the front portion of the main body is wider than the unwinding position and is easily accessible to the operator; therefore, by installing a sensor in this front portion, sensor maintenance is easy.

[0018] In the aforementioned winding and rewinding machine, the drive mechanism can also have a stepper motor as the drive source for rotating the first rotating shaft. This allows for high-precision control of the movement of the mounting components.

[0019] In the aforementioned roll rewinding machine, the drive mechanism may also include: a first circular member mounted on a first rotating shaft and having a first diameter; and a second circular member mounted on a drive source and having a second diameter smaller than the first diameter, transmitting the driving force of the drive source to the first circular member. That is, a stepper motor may also be connected to the first rotating shaft via a reduction gear. Thus, even a heavy first roll can be easily moved.

[0020] In the aforementioned roll rewinding machine, the drive mechanism may also include: a cam groove disposed on the second circular member; and a suppressing member that suppresses the rotation of the second circular member by being embedded in the cam groove. This prevents the mounting member from accidentally moving due to the gravity of the first roll, etc.

[0021] In the aforementioned roll rewinding machine, an elongated hole for adjusting the position of the cam groove can also be provided on the second circular component. This allows for easy adjustment of the position of the mounting component.

[0022] The effects of the invention

[0023] By detecting other mounted components using sensors, the location of the mounted component being detected can be determined to be in a first position, thereby confirming whether the mounted component being detected has been accurately positioned to the first position. Furthermore, by placing sensors at the detection locations where other mounted components are detected while the mounted component being detected is in the first position, sensor maintenance becomes easier. Attached Figure Description

[0024] Figure 1 This is a three-dimensional diagram showing the structure of an automatic winding machine.

[0025] Figure 2 This is a diagram showing the structure of the winding unit.

[0026] Figure 3 This is a diagram showing the roll supply device viewed from the roll installation section side.

[0027] Figure 4 This is a diagram showing the roll feeding device viewed from the drive mechanism side.

[0028] Figure 5 This is an enlarged view of the second guide section. Detailed Implementation

[0029] 1. First Implementation Method

[0030] (1) Automatic winding machine

[0031] The following uses Figure 1 The automatic winding machine 1 of this embodiment will be described. Figure 1 This is a perspective view showing the structure of the automatic winding machine 1. The automatic winding machine 1 has a main frame 2, a plurality of winding units 4, and a machine control device.

[0032] The main frame 2 forms the skeleton of the automatic winding machine 1. A plurality of winding units 4 are arranged and configured by being mounted on the main frame 2. The plurality of winding units 4 are respectively fed from a package feed device 3 (…). Figure 2 The first roll 7 is unwound and wound back the yarn to form the second roll 9. The winding unit 4 can also be called a roll rewinder.

[0033] The machine control unit is located at one end of the main frame 2, in the direction in which the plurality of winding units 4 are arranged. The machine control unit communicates with the unit controller 90 of each winding unit 4. Figure 2 ) communicate with each other to uniformly control the winding unit 4.

[0034] (2) Winding unit

[0035] The following uses Figure 2 The winding unit 4 will be described. Figure 2 This is a diagram showing the structure of the winding unit 4. The winding unit 4 has a package feeding device 3, a yarn winding section 5, a yarn receiving section 8, a unit controller 90, and a winding controller 91.

[0036] The roll supply device 3 is disposed at the lower part of the main frame 2. The roll supply device 3 is provided to replace the first roll 7 which supplies yarn for rewinding to the second roll 9. The roll supply device 3 is mounted at the lower part of the main frame 2 in such a way that it is placed on the bottom plate of the main frame 2.

[0037] The yarn winding section 5 winds the yarn supplied from the package supply device 3 onto the core tube (paper tube) to form a second package 9. The yarn winding section 5 is mounted on the upper part of the main frame 2. The yarn winding section 5 has a winding bobbin 51, a rocker arm 52, and a traverse roller 53.

[0038] The winding bobbin 51 winds the yarn supplied from the package feeder 3 onto its outer periphery to form a second package 9. The winding bobbin 51 is held in a cradle 52. The cradle 52 is oscillating in a direction that approaches or separates from the traverse roller 53. Thus, the cradle 52 can bring the second package 9 into contact with or separate it from the traverse roller 53.

[0039] The traverse roller 53 causes the yarn to traverse and rotates the winding bobbin 51. A spiral traverse groove is formed on the outer circumferential surface of the traverse roller 53, through which the yarn traverses at a constant width and winds onto the winding bobbin 51. Thus, a second package 9 with a constant winding width can be formed.

[0040] The yarn splicing section 8 is located in the middle of the main frame 2 in the vertical direction. Specifically, it is located above the position where the package supply device 3 is located and below the position where the yarn winding section 5 is located. The yarn splicing section 8 splices the broken yarn when the yarn supplied from the package supply device 3 to the yarn winding section 5 breaks. The yarn splicing section 8 includes a yarn monitoring device 71, a splicer 72, a lower yarn guide tube 73, an upper yarn guide tube 74, and a tension applying device 75.

[0041] The yarn monitoring device 71 detects defects such as thick spots on the yarn by monitoring the yarn thickness. Hereinafter, this defect will sometimes be referred to as a yarn defect. A cutter is disposed near the yarn monitoring device 71 to immediately cut the yarn when the yarn monitoring device 71 detects a yarn defect.

[0042] The splicer 72 splices the yarn from the yarn supply device 3 side to the yarn winding section 5 side when the yarn monitoring device 71 detects a yarn defect and cuts the yarn with a cutter, when the yarn breaks while unwinding from the first roll 7, or when the first roll 7 is replaced. For example, the splicer 72 can be configured to splice yarn by twisting the yarn with compressed air.

[0043] The lower yarn guide tube 73 is rotatably disposed on the lower side of the splicer 72. A suction port is formed at the top end of the lower yarn guide tube 73. A suction flow can be generated at the suction port by the attraction of a suction source. The suction source is, for example, an air suction pipe. The upper yarn guide tube 74 is rotatably disposed on the upper side of the splicer 72. A suction nozzle is formed at the top end of the upper yarn guide tube 74. A suction flow can be generated at the suction nozzle by the attraction of a suction source.

[0044] When cutting the yarn, the suction port of the lower yarn guide tube 73 rotates downward to attract and capture the lower yarn, and then guides the lower yarn to the splicer 72 by rotating upward. Meanwhile, the suction nozzle of the upper yarn guide tube 74 attracts and captures the upper yarn unwound from the second roll 9, and then guides the upper yarn to the splicer 72 by rotating downward. The lower and upper yarns are then spliced ​​in the splicer 72.

[0045] The tension applying device 75 applies a predetermined tension to the traveling yarn. The tension applying device 75 can be, for example, constructed from a gate-like component with movable comb teeth configured relative to fixed comb teeth. The movable comb teeth are stressed in a meshing state. By bending and passing the yarn between the meshing comb teeth, a suitable tension can be applied to the yarn.

[0046] The unit controller 90 and the winding controller 91 are computer systems composed of a CPU and other arithmetic circuits, 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 are executed by these controllers to control the winding unit 4.

[0047] Specifically, the winding controller 91 controls the winding action of the yarn winding section 5. The unit controller 90 is a higher-level control unit than the winding controller 91, controlling the winding controller 91 and uniformly controlling the entire winding unit 4, including the yarn receiving section 8 and the package supply device 3. The unit controller 90 can communicate with the machine control unit of the automatic winding machine 1.

[0048] (3) Roll feeding device

[0049] The following uses Figures 2-4 The details of the roll feeding device 3 are explained. Figure 3 This is a diagram showing the roll supply device 3 viewed from the roll installation section 33 side. Figure 4 This is a diagram showing the roll supply device 3 viewed from the drive mechanism 35 side.

[0050] The package supply device 3 is configured to replace the first package 7, which supplies yarn for rewinding to the second package 9. Specifically, the package supply device 3 is a device that moves the first package 7 between an unwinding position P1 and a setting position P2. The unwinding position P1 is the position where the first package 7 is unwound. On the other hand, the setting position P2 is the position for pulling out the empty bobbin and installing the first package 7.

[0051] The roll feeding device 3 includes a main body 31, a roll mounting part 33, a drive mechanism 35, and a sensor 37. The main body 31 constitutes the main body of the roll feeding device 3. The main body 31 is located at the lower part of the main frame 2.

[0052] The roll mounting section 33 is used to mount the first roll 7 and move the mounted first roll 7 between the unwinding position P1 and the setting position P2. The roll mounting section 33 has a first rotating shaft 33a, a rod-shaped member 33b and a plurality of mounting members 33c.

[0053] The first rotating shaft 33a is rotatably mounted on the front side of the winding unit 4 of the main body 31. The first rotating shaft 33a is connected to the drive mechanism 35. That is, the first rotating shaft 33a rotates by being driven by the drive mechanism 35.

[0054] The rod-shaped member 33b is a member that extends equally from the first rotation axis 33a. Specifically, the rod-shaped member 33b is a member that extends in one direction, and its center 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 track by the rotation of the first rotation axis 33a.

[0055] Mounting member 33c is disposed at the end of rod-shaped member 33b and is used for mounting the first roll 7. In this embodiment, two mounting members 33c are disposed. One mounting member 33c is disposed at one end of rod-shaped member 33b extending in one direction, and the other mounting member 33c is disposed at the other end of rod-shaped member 33b.

[0056] The side of the mounting member 33c opposite to the side into which the first roll 7 is inserted is fixed to one end of the arm member 33d. A circular plate member 33e with a diameter greater than or equal to the maximum diameter of the first roll 7 is installed between the mounting member 33c and the arm member 33d.

[0057] A second rotation axis is provided at the end of the arm member 33d opposite to the end where the mounting member 33c is fixed. This second rotation axis is parallel to the first rotation axis and is rotatably mounted at the end of the rod member 33b. That is, the arm member 33d can rotate about the second rotation axis, which is parallel to the first rotation axis 33a, at the end of the rod member 33b. Therefore, by rotating the arm member 33d about the second rotation axis in conjunction with the rotation of the end of the rod member 33b, the mounting member 33c can rotate about the second rotation axis at the end of the rod member 33b.

[0058] The roll mounting section 33 also includes a rod member 33f, a first guide section 33g, and a second guide section 33h. Figure 5 ). Figure 5 This is an enlarged view of the second guide part 33h. One end of the rod member 33f is fixed to a second rotation axis that rotates the arm member 33d. A protrusion 33i is provided at the end of the rod member 33f opposite to the end fixed to the second rotation axis.

[0059] The first guide portion 33g is located at the lower front part of the main body 31. The first guide portion 33g is composed of a pair of inclined elongated members. During the movement of the mounting member 33c from the unwinding position P1 to the setting position P2, the protrusion 33i of the rod member 33f is guided between the pair of elongated members of the first guide portion 33g. The orientation of the rod member 33f is determined by this guidance, thereby determining the orientation of the mounting member 33c at the setting position P2. In the setting position P2, the mounting member 33c is inclined towards the front side of the winding unit 4. By the inclined orientation of the mounting member 33c towards the front side of the winding unit 4, the empty bobbin can be easily pulled out from the mounting member 33c and the first roll 7 can be installed onto the mounting member 33c in the setting position P2.

[0060] The second guide section 33h is located at the upper front of the main body 31. The second guide section 33h is composed of an inclined elongated member. During the movement of the mounting member 33c from the setting position P2 to the unwinding position P1, the protrusion 33i of the rod member 33f is guided at the upper part of the elongated member of the second guide section 33h. This guidance determines the orientation of the rod member 33f, thereby determining the orientation of the mounting member 33c at the unwinding position P1. In the unwinding position P1, the mounting member 33c is slightly inclined towards the rear side of the winding unit 4. Therefore, in the unwinding position P1, the unwinding of the yarn from the first package 7 and the supply of the yarn to the yarn winding section 5 can be appropriately performed.

[0061] Returning to the description of the roll supply device 3. The drive mechanism 35 drives the first rotating shaft 33a of the roll mounting section 33 to rotate, causing the mounting member 33c of the roll mounting section 33 to move between the unwinding position P1 and the setting position P2. Specifically, the drive mechanism 35 has a drive source 35a, a first circular member 35b, a second circular member 35c, and a connecting member 35d. The drive mechanism 35 decelerates the rotation of the drive source 35a and transmits it to the first rotating shaft 33a.

[0062] The drive source 35a supplies driving force for rotating the roll mounting section 33. The drive source 35a is, for example, a stepper motor. A stepper motor is a motor whose rotation amount can be precisely controlled by pulse signals. Therefore, by using a stepper motor as the drive source 35a, the movement control of the mounting member 33c of the roll mounting section 33 can be performed with high precision. That is, the position of the mounting member 33c can be precisely controlled.

[0063] The drive source 35a is connected to the unit controller 90 and is controlled by the unit controller 90.

[0064] The first circular member 35b is fixed to the first rotating shaft 33a of the roll mounting portion 33 on the side of the main body 31 opposite to the side where the roll 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.

[0065] The second circular member 35c is fixed to the output rotation shaft of the drive source 35a (stepper motor) on the side of the main body 31 opposite to the side where the roll 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 with a second number of teeth that is less than the first number of teeth of the first circular member 35b.

[0066] The connecting member 35d is a component that is mounted between and connects 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 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, a ring chain.

[0067] 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 speed reduction mechanism that reduces the rotation of the drive source 35a and transmits it to the first rotating shaft 33a. That is, the drive source 35a is connected to the first rotating shaft 33a via this speed reduction mechanism.

[0068] 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. Therefore, the first rotating shaft 33a (i.e., the roll mounting portion 33) can be rotated with a larger torque. By rotating the roll mounting portion 33 with a larger torque, the heavier first roll 7 mounted on the end of the rod-shaped member 33b can be easily moved by the rotation of the drive source 35a.

[0069] The drive mechanism 35 has a suppression mechanism that prevents the roll mounting portion 33 from moving accidentally due to the gravity of the first roll 7, etc. Specifically, the drive mechanism 35 has a cam groove 35e, a suppression member 35f, and a force-applying member 35g as the suppression mechanism.

[0070] The cam groove 35e is a recess formed in the disc member 35h. The cam groove 35e is arranged circumferentially on the disc member 35h in a manner corresponding to the arrangement of a plurality of mounting members 33c in the roll mounting section 33. As described above, in the roll mounting section 33 of this embodiment, two mounting members 33c are arranged on the rod member 33b at a 180-degree interval. Therefore, in this embodiment, two cam grooves 35e are arranged at a 180-degree interval on the disc member 35h. This prevents both mounting members 33c from moving at a specific, identical position.

[0071] The disc component 35h is fixed to the second circular component 35c by a screw that passes through the elongated hole 35i in the second circular component 35c. This allows adjustment of the fixed position of the disc component 35h relative to the second circular component 35c, thereby allowing adjustment of the position of the cam groove 35e relative to the second circular component 35c.

[0072] The suppressing member 35f is rotatably mounted on the main body 31. One end of the suppressing member 35f is connected to the force-applying member 35g, and the other end of the suppressing member 35f is subjected to force by the force-applying member 35g and comes into contact with the disc member 35h. The force-applying member 35g is, for example, an elastic member such as a spring.

[0073] When the other end of the suppressing member 35f reaches the same position as the cam groove 35e of the disc member 35h, the other end of the suppressing member 35f is force-applied by the force-appliing member 35g while embedded in the cam groove 35e. By applying force to the other end of the suppressing member 35f while embedded in the cam groove 35e, the suppressing member 35f functions like a "wheel stop" to prevent rotation relative to the disc member 35h. Thus, it is possible to suppress the unexpected rotation (i.e., unrelated to the driving force of the drive source 35a) of the disc member 35h, the first circular member 35b, and the second circular member 35c due to the gravity of the first roll 7 mounted on the roll mounting section 33.

[0074] The position of the disc member 35h relative to the second circular member 35c is adjusted such that, for example, when one of the two mounting members 33c of the roll mounting section 33 is in the unwinding position P1 and the other is in the setting position P2, the member 35f is prevented from engaging with the cam groove 35e. Thus, it is possible to prevent the mounting member 33c (first roll 7) located in the unwinding position P1 from accidentally moving due to the gravity of the first roll 7 mounted on the mounting member 33c in the setting position P2.

[0075] The drive mechanism 35 has a tension adjustment section 35j. The tension adjustment section 35j is rotatably mounted on the main body 31. A third circular member 35k (e.g., a sprocket) is provided at one end of the tension adjustment section 35j, which contacts the connecting member 35d. By rotating the tension adjustment section 35j, the contact position between the third circular member 35k and the connecting member 35d can be adjusted, thereby adjusting the tension of the connecting member 35d mounted on the first circular member 35b and the second circular member 35c.

[0076] Returning to the description of the roll feeding device 3. Sensor 37 is fixed to the upper front part of the main body 31. Sensor 37, fixed at this position, detects the mounting member 33c located at the setting position P2.

[0077] As described above, in the roll mounting section 33, two mounting members 33c are disposed on the rod-shaped member 33b at a 180-degree interval. When one of the two mounting members 33c is in the setting position P2, the other is in the unwinding position P1. Therefore, when the sensor 37 detects the mounting member 33c in the setting position P2, it means that it detects the other mounting member 33c in the unwinding position P1. That is, the sensor 37 detects one mounting member 33c in the unwinding position P1 while detecting the other mounting member 33c in the setting position P2. In other words, the sensor 37 is configured to detect the position of the other mounting member 33c in the setting position P2 (the position corresponding to the setting position P2) when the mounting member 33c to be detected is in the unwinding position P1.

[0078] Sensor 37 is provided to detect that the mounting member 33c, which is the object of detection, is located at the unwinding position P1. On the other hand, by placing sensor 37 in a position that does not correspond to the unwinding position P1 (for example, the lower rear part of the main body 31), maintenance work on sensor 37 is not required near the unwinding position P1, thus simplifying maintenance work. Maintenance work includes, for example, adjusting the position of sensor 37 and replacing sensor 37. In addition, the flexibility of the mounting position of sensor 37 can be increased.

[0079] In particular, by placing the sensor 37 at a position corresponding to the placement position P2 in front of the main body 31 at the unwinding position P1, maintenance of the sensor 37 can be made easier. This is because the vicinity of the placement position P2 in front of the main body 31 at the unwinding position P1 is the location where the empty bobbin is removed from the mounting member 33c and / or the first roll 7 is installed on the mounting member 33c, thus it is wider and easier for the operator to access.

[0080] 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 fixes the sensor 37. The position adjustment member 37a is fixed to the main body 31 by a screw passing through an elongated hole provided in the upper front part of the main body 31. As a result, the fixed position of the position adjustment member 37a relative to the main body 31 can be adjusted, thereby making it easy to adjust the mounting position of the sensor 37 relative to the main body 31.

[0081] 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 roll mounting section 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.

[0082] (4) Operation of the roll feeding device

[0083] The following is a brief explanation of the operation of supplying the first roll 7 to the unwinding position P1 via the roll supply device 3. First, the position of the mounting member 33c provided in the roll mounting section 33 is adjusted. This position adjustment is performed, for example, during the installation of the winding unit 4, during maintenance, or when the roll supply device 3 determines that the position adjustment has deviated.

[0084] Specifically, firstly, the roll mounting section 33 is rotated, and one of the mounting members 33c is detected by the sensor 37. As a result, one of the mounting members 33c is in the unwinding position P1, and the other mounting members 33c are in the setting position P2. Next, with one of the mounting members 33c in the unwinding position P1 and the other mounting members 33c in the setting position P2, the position of the disc member 35h relative to the second circular member 35c is adjusted. This action causes the suppressing member 35f to engage with the cam groove 35e of the disc member 35h. Therefore, when the two mounting members 33c are in the unwinding position P1 and the setting position P2 respectively, accidental rotation of the roll mounting section 33 due to the gravity of the first roll 7 can be prevented.

[0085] With the mounting member 33c in a positional adjustment state, the first roll 7 is placed on the mounting member 33c at the setting position P2. Then, starting from the state of the mounting member 33c at the setting position P2 detected by the sensor 37, the unit controller 90 outputs a control signal to the drive source 35a to rotate it by a predetermined amount. As a result, the first roll 7 mounted on the mounting member 33c at the setting position P2 can be moved from the setting position P2 to the unwinding position P1. Specifically, the unit controller 90 outputs a predetermined number of pulse signals and / or outputs control signals to the drive source 35a, which is a stepper motor, until the mounting member 33c is detected again by the sensor 37.

[0086] After the first roll 7 is moved to the unwinding position P1, the yarn is unwound from the first roll 7 and supplied to the yarn winding section 5. The unwound yarn is then wound around by the yarn winding section 5, thereby forming the second roll 9.

[0087] In the aforementioned roll supply device 3, the presence of other mounting members 33c is detected by sensor 37 to determine if one of the plurality of mounting members 33c is located at a predetermined unwinding position P1. Thus, if the presence of other mounting members 33c by sensor 37 can detect that any one mounting member 33c is located at the unwinding position P1, it can be confirmed whether the mounting member 33c has been accurately positioned to the unwinding position P1.

[0088] As a result, for example, if a position adjustment is performed so that any one of the mounting components 33c is detected by the sensor 37, the other mounting components 33c that were not detected by the sensor 37 are accurately positioned to the unwound position P1. Furthermore, even if there is a possibility of position adjustment deviation due to accidental operation, the deviation can be corrected simply by performing another position adjustment to detect any one of the mounting components 33c using the sensor 37.

[0089] Furthermore, as described above, in the roll supply device 3, after the unit controller 90 detects the mounting member 33c at the setting position P2 via the sensor 37, it causes the drive source 35a to rotate by a predetermined amount of rotation. This allows the mounting member 33c to move accurately from the unwinding position P1 to the setting position P2, or from the setting position P2 to the unwinding position P1. In other words, in the roll supply device 3, the unwinding position P1 or the setting position P2 detected by the sensor 37 can be used as the reference position for controlling the movement of the mounting member 33c.

[0090] Furthermore, the detection of mounting member 33c by sensor 37 indicates that other mounting members 33c are in the unwound position P1. Therefore, it is easy to control the movement of these other mounting members 33c towards the unwound position P1. Specifically, by stopping the rotation of drive source 35a when mounting member 33c is detected by sensor 37, other mounting members 33c can be stopped at the unwound position P1.

[0091] 2. Other implementation methods

[0092] The present invention has been described above as an embodiment, but the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. In particular, the plurality of embodiments and variations described in this specification can be arbitrarily combined as needed.

[0093] (A) It is also possible to set a sensor 37 at the location where other mounting components 33c are detected when any mounting component 33c is located at a position different from the unwinding position P1.

[0094] In this case, the detection of mounting member 33c by sensor 37 does not necessarily mean that other mounting members 33c are located in the unwinding position P1. However, by further rotating the drive source 35a by a predetermined amount after the detection of mounting member 33c by sensor 37, other mounting members 33c can be accurately moved to the unwinding position P1. That is, the reference position for controlling the movement of mounting member 33c can be determined as any position other than the unwinding position P1 or the setting position P2.

[0095] (B) The number of mounting members 33c provided in the roll mounting section 33 can be arbitrary. In this case, it is also possible to determine which mounting member 33c is detected by the sensor 37. Thus, based on, for example, 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 roll mounting section 33, etc., it is easy to determine which mounting member 33c is located at the reference position.

[0096] (C) The drive mechanism for the drive roll mounting section 33 can be a mechanism other than the first circular member 35b and the second circular member 35c which are sprockets and the connecting member 35d which is an annular chain. For example, the first circular member 35b and the second circular member 35c can be pulleys, and the connecting member 35d can be an annular belt mounted on these pulleys.

[0097] Alternatively, the first circular member 35b and the second circular member 35c can be configured as gears, allowing the gear in the first circular member 35b and the gear in the second circular member 35c to mesh directly. In this case, the connecting member 35d is not required.

[0098] 3. Features of the Implementation Method

[0099] The above-described embodiments can also be described as follows.

[0100] (1) A package rewinder (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 rewinder has a main body (e.g., main body 31), a package mounting part (e.g., package mounting part 33), a drive mechanism (e.g., drive mechanism 35), and a sensor (e.g., sensor 37). The package mounting part 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 that mount the first package and can move with the rotation of the first rotating shaft. The drive mechanism drives the first rotating shaft of the package mounting part to rotate. The sensor detects when one of the plurality of mounting members, i.e., the detection object, is located at a predetermined first position (e.g., unwinding position P1). In the aforementioned roll rewinding machine, the sensor is positioned at a detection position (e.g., the position corresponding to the setting position P2) where the presence of other mounting components among a plurality of mounting components can be detected when the object to be detected is in the first position.

[0101] In the aforementioned roll rewinding machine, sensors are used to detect the installation components other than the target component to determine if one of the plurality of installation components (the target component) of the first roll of unwound yarn is located in a predetermined first position. Thus, if the target component can be detected in the first position by sensors detecting other installation components, it can be confirmed whether the target component has been accurately positioned to the first position.

[0102] As a result, for example, if a position adjustment is performed so that any one of the mounting components is detected by the sensor, the other mounting components that were not detected by the sensor are accurately positioned to the first position. Furthermore, even if the position adjustment is misaligned due to accidental operation, the misaligned position adjustment can be corrected simply by performing another position adjustment to detect any one of the mounting components using the sensor.

[0103] Furthermore, in the aforementioned roll-to-rewind machine, when the mounting member to be detected is in the first position, sensors are provided at the detection positions of the other mounting members among the plurality of mounting members. Therefore, for example, sensor maintenance work is not required near the first position, thus simplifying sensor maintenance. Additionally, the flexibility in sensor mounting position is increased.

[0104] (2) In the rewinding machine described in (1) above, the first position can also be the configuration position of the first roll when unwinding the yarn, i.e., the unwinding position (e.g., unwinding position P1). Thus, it is possible to accurately determine the location of the mounting component, which is the object of inspection, in the unwinding position.

[0105] (3) In the rewinding machine described in (1) above, the first position can also be a position other than the unwinding position. Therefore, after the sensor detects the mounting member other than the detection target, the mounting member can be positioned at the unwinding position by moving it by a predetermined amount. That is, after the sensor detects the mounting member other than the detection target, the first roll can be accurately positioned at the unwinding position by moving it by a predetermined amount.

[0106] (4) In any of the winding rewinders described in (1) to (3) above, the winding mounting section may also have rod-shaped members (e.g., rod-shaped member 33b) extending equally from the first rotation axis. In this case, the plurality of mounting members may be rotatably disposed at one end of the plurality of ends of the rod-shaped member about a second rotation axis parallel to the first rotation axis. Thus, the mounting members can be oriented in an orientation corresponding to their placement position.

[0107] (5) In the winding and rewinding machine described in (4) above, the sensor may also be a Hall element. In this case, a magnet that can be detected by the Hall element may also be provided on the second rotating shaft. Thus, the mounting member provided on the second rotating shaft can be detected with an easy structure.

[0108] (6) In any of the above (1) to (5) winding and rewinding machines, the sensor can also be fixed to the main body via a position adjustment member that adjusts the sensor's mounting position. As a result, the mounting position of the sensor relative to the main body can be easily adjusted.

[0109] (7) In any of the above (1) to (6) package rewinding machines, the detection position may also be set at a position further forward of the main body than the unwinding position from the first package unwinding yarn. In the package rewinding machine, the front part of the main body is wider than the unwinding position and is in a position that is easy for the operator to access. Therefore, by setting the sensor in this front part, it is easy to maintain the sensor.

[0110] (8) In any of the above (1) to (7) roll rewinding machines, the drive mechanism may also have a stepper motor as a drive source to rotate the first rotating shaft (e.g., drive source 35a). As a result, the movement control of the mounting components can be performed with high precision.

[0111] (9) In the rewinding machine of (8) above, the drive mechanism may also include: a first circular member (e.g., first circular member 35b) mounted on a first rotating shaft and having a first diameter; and a second circular member (e.g., second circular member 35c) mounted on a drive source and having a second diameter smaller than the first diameter, transmitting the driving force of the drive source to the first circular member. That is, a stepper motor may also be connected to the first rotating shaft via a reduction gear. Thus, even a heavy first roll can be easily moved.

[0112] (10) In the rewinding machine of (9) above, the drive mechanism may also have: a cam groove (e.g., cam groove 35e) provided on the second circular member; and a suppressing member (e.g., suppressing member 35f) that suppresses the rotation of the second circular member by being embedded in the cam groove. Thus, it is possible to suppress the accidental movement of the mounting member due to the gravity of the first roll, etc.

[0113] (11) In the winding and rewinding machine described in (10) above, an elongated hole (e.g., elongated hole 35i) for adjusting the position of the cam groove may also be provided on the second circular component. As a result, the position of the mounting component can be easily adjusted.

[0114] Industrial availability

[0115] This invention can be widely applied to rewinding machines that wind yarn from a first roll onto a second roll.

Claims

1. A roll rewinding machine that winds yarn unwound from a first roll onto a second roll, wherein, have: Main body; The roll mounting section has a first rotating shaft that is rotatably mounted on the main body and a plurality of mounting members that mount the first roll and are movable as the first rotating shaft rotates. The drive mechanism drives the first rotating shaft of the roll mounting section to rotate. as well as The sensor detects when one of the plurality of mounting components, i.e., the object to be detected, is located in a predetermined first position. The sensor is positioned at a detection location that enables the detection of the presence of other mounting components among the plurality of mounting components when the object being detected is located at the first position.

2. The roll rewinding machine according to claim 1, wherein, The roll mounting section also has rod-shaped members extending equally from the first rotation axis. A plurality of mounting components are rotatably disposed at one of the plurality of ends of the rod-shaped component, with a second rotation axis parallel to the first rotation axis as the center.

3. The roll rewinding machine according to claim 2, wherein, The sensor is a Hall element. A magnet capable of being detected by the Hall element is provided on the second rotating axis.

4. The roll 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 sensor's mounting position.

5. The roll rewinding machine according to any one of claims 1 to 4, wherein, The detection position is set further forward of the main body than the unwinding position from the first roll of unwound yarn.

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

7. The roll rewinding machine according to claim 6, wherein, The drive mechanism has: A first circular component, mounted on the first rotating shaft, has a first diameter; and A second circular component, mounted on 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 component.

8. The roll rewinding machine according to claim 7, wherein, The drive mechanism has: A cam groove is provided in the second circular member; and The suppressing member suppresses the rotation of the second circular member by embedding itself in the cam groove.

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

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