CN-121990416-A - Winding rewinding machine

Abstract

The invention provides a package rewinding machine, which can accurately detect whether the position of a mounting member is properly adjusted. A package rewinding machine (4) winds yarn unwound from a first package (7) around a second package (9), and has a package mounting portion (33) having a first rotation shaft (33 a) rotatably mounted to a main body portion (31), and a plurality of mounting members (33 c) mounted to the first package (7) and movable with rotation of the first rotation shaft (33 a), a driving mechanism (35) for rotationally driving the first rotation shaft (33 a), and a sensor (37) for detecting that one of the plurality of mounting members (33 c) is located at a first position. The sensor (37) is provided at a position where the presence of the other mounting member (33 c) is detected when one of the plurality of mounting members (33 c) is located at the first position.

Inventors

• Ma Yangfu
• TOMIYAMA KIMIHIRO

Assignees

• 村田机械株式会社

Dates

Publication Date

20260508

Application Date

20251031

Priority Date

20241108

Claims (9)

1. 1. A package rewinder winds a yarn unwound from a first package around a second package, wherein, The device comprises: A main body portion; A package mounting portion having a first rotation shaft rotatably mounted to the main body portion, and a plurality of mounting members to which the first package is mounted and which are movable with rotation of the first rotation shaft; A driving mechanism for rotationally driving the first rotation shaft of the package mounting part, and A sensor for detecting that one of the plurality of mounting members, i.e., a detection object, is located at a predetermined first position, The sensor is provided at a detection position at which the presence of the other of the plurality of mounting members can be detected when the detection object is located at the first position.
2. 2. The package rewinder of claim 1, wherein, The package mounting part further has a rod-shaped member equally extending from the first rotation shaft, The plurality of attachment members are each provided at one of the plurality of end portions of the rod-like member so as to be rotatable about a second rotation axis parallel to the first rotation axis.
3. 3. The roll rewinding machine as claimed in claim 2, wherein, The sensor is a hall element and, A magnet detectable by the hall element is provided on the second rotation shaft.
4. 4. The package rewinder according to any one of claim 1-3, wherein, The sensor is fixed to the main body via a position adjustment member that adjusts an attachment position of the sensor.
5. 5. The package rewinder according to any one of claim 1-4, wherein, The detection position is set at a position in front of the main body than an unwinding position from which the yarn is unwound from the first package.
6. 6. The package rewinder according to any one of claims 1-5, wherein, The driving mechanism has a stepping motor as a driving source for rotating the first rotation shaft.
7. 7. The package rewinder of claim 6, wherein, The drive mechanism has: a first circular member mounted to the first rotary shaft and having a first diameter, and And a second circular member attached to the driving source and having a second diameter smaller than the first diameter, and transmitting a driving force of the driving source to the first circular member.
8. 8. The package rewinder of claim 7, wherein, The drive mechanism has: a cam groove provided in the second circular member, and And a restraining member restraining rotation of the second circular member by being fitted into the cam groove.
9. 9. The package rewinder of claim 8, wherein, A long hole for adjusting the position of the cam groove is provided in the second circular member.

Description

Winding rewinding machine Technical Field To a package rewinder for winding yarn unwound from a first package onto a second package. Background Conventionally, there is known a device for unwinding a yarn from a package, winding the unwound yarn around another bobbin, and winding the yarn around a new package (for example, refer to JP 2019-034847A). The device has a mechanism for supplying a package of unwinding yarn to a winding device for a new package. The mechanism has a plurality of mounting members for mounting packages of unwinding yarn. The plurality of mounting members are movable between a mounting position for mounting the package on the mounting member and an unwinding position for unwinding the yarn from the package and supplying the yarn to the winding device by rotation of the predetermined rotation shaft, respectively. In the mechanism for supplying the package to the winding device, it is necessary to accurately supply the package of the unwinding yarn to the unwinding position. When the package is supplied to a position offset from the unwinding position, excessive tension (tension) acts on the yarn being unwound, and therefore, it is necessary to reduce the yarn speed when winding the yarn into a new package. As a result, the production efficiency of the new package is lowered. Therefore, in the above mechanism, in order to accurately supply the package to the unwinding position, the position of the mounting member is adjusted to determine the reference position, and the movement control of the mounting member is performed with reference to the determined reference position. Conventionally, it has not been detected whether or not the position of the attachment member has been appropriately adjusted. The position adjustment of the mounting member is performed mechanically, but there is a possibility that the position adjustment of the mounting member cannot be performed accurately. Further, if the mechanism is accidentally operated after the position adjustment (for example, another object collides with the mechanism), there is a possibility that the position adjustment is deviated. If the positional adjustment is improper or the positional adjustment is shifted by an unexpected operation, the movement control of the attachment member may not be able to accurately supply the package to the unwinding position with reference to the position shifted from the original reference position. Disclosure of Invention The purpose of the present invention is to accurately detect whether or not the position of a mounting member for mounting a package for unwinding a yarn has been properly adjusted. As means for solving the problems, a plurality of modes will be described below. These modes can be arbitrarily combined as needed. A package rewinding machine according to an embodiment of the present invention is a device that winds a yarn unwound from a first package around a second package. The package rewinding machine is provided with a main body part, a package installation part, a driving mechanism and a sensor. The package mounting portion has a first rotation shaft and a plurality of mounting members. The first rotary shaft is rotatably attached to the main body. The mounting member is a member to which the first package is mounted, and is movable with rotation of the first rotation shaft. The driving mechanism rotationally drives the first rotary shaft of the package mounting section. The sensor detects that one of the plurality of mounting members, i.e., the detection object, is located at a predetermined first position. In the above-described package rewinding machine, the sensor is provided at a detection position at which the presence of the other attachment member of the plurality of attachment members can be detected when the detection object is located at the first position. In the package rewinding machine described above, the sensor detects the mounting member other than the detection target, and detects that one of the plurality of mounting members (detection target) on which the first package of the unwinding yarn is mounted is located at the predetermined first position. In this way, if it is possible to detect that the mounting member as the detection object is located at the first position by detecting the other mounting member by the sensor, it is possible to confirm whether or not the mounting member as the detection object is accurately position-adjusted to the first position. As a result, for example, if the position adjustment is performed so that any one of the mounting members is detected by the sensor, the other mounting members that are not detected by the sensor are accurately position-adjusted to the first position. In addition, even when the positional adjustment is shifted by an unexpected operation, the positional adjustment can be corrected by detecting any one of the mounting members by the sensor by performing the positional adjustment again. In the above-described p