US-12618869-B2 - Rotating body inspection device for electrification component

US12618869B2US 12618869 B2US12618869 B2US 12618869B2US-12618869-B2

Abstract

Provided is a rotating body inspection apparatus for an electrification component, the rotating body inspection apparatus including a main sprocket on which a rotating body is seated and which is shaped as a disk and rotates, a sub sprocket shaped as a disk and rotating, a connection portion connecting the main sprocket to the sub sprocket, and a linear conversion portion which is connected to the sub sprocket and which converts a rotational movement into a linear movement, wherein a diameter of the sub sprocket is less than a diameter of the main sprocket.

Inventors

Young Wook Yoon
Young Yeop YOON

Assignees

VIEWON CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20221219
Priority Date: 20211223

Claims (5)

1 . A rotating body inspection apparatus for an electrification component, the rotating body inspection apparatus comprising: a main sprocket on which a rotating body is seated and which is shaped as a disk and rotates; a sub sprocket shaped as a disk and rotating; a connection portion connecting the main sprocket to the sub sprocket; a linear conversion portion which is connected to the sub sprocket and which converts a rotational movement into a linear movement, wherein a diameter of the sub sprocket is less than a diameter of the main sprocket, wherein the linear conversion portion comprises: a rotation portion connected to the sub sprocket and rotating by the sub sprocket; and a linear portion connected to the rotation portion and making a linear reciprocating movement in response to a rotation of the rotation portion, and the sub sprocket rotates in response to a rotation of the main sprocket, and the linear portion makes a linear reciprocating movement in response to a rotation of the sub sprocket; the rotation body inspection apparatus further comprising an origin sensor configured to measure a position of a first point at which the linear portion is located according to the linear reciprocating movement of the linear portion; and a position limit sensor configured to measure a position of a second point at which the linear portion is located according to the linear reciprocating movement of the linear portion, wherein the origin sensor and the position limit sensor are disposed in a direction parallel to an axial direction in which the linear portion moves, and a position of any one or more of the origin sensor and the position limit sensor is changeable according to a rotation angle of the rotating body.
2 . The rotating body inspection apparatus of claim 1 , further comprising: an image capturing unit provided on the main sprocket and photographing the rotating body seated on the main sprocket; and a lighting unit irradiating light to the rotating body seated on the main sprocket.
3 . The rotating body inspection apparatus of claim 1 , wherein the rotation portion comprises a ball screw, and the linear portion comprises a linear motion (LM) guide.
4 . The rotating body inspection apparatus of claim 1 , wherein the first point at which the linear portion is located is a position of the linear portion corresponding to a point in time at which the main sprocket starts rotating, and the second point at which the linear portion is located is a position of the linear portion corresponding to a point in time at which the main sprocket rotates by 370 degrees to 390 degrees.
5 . The rotating body inspection apparatus of claim 1 , wherein a distance between the origin sensor and the position limit sensor is equal to 1.027 times to 1.083 times of a product of a diameter (D 1 ) of the main sprocket with respect to a diameter (D 2 ) of the sub sprocket and a distance the linear portion moves by one turn of a rotation of the sub sprocket.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a U.S. national phase application filed under 35 U.S.C. § 371 of International Application PCT/KR2022/020696, filed Dec. 19, 2022 which is based upon and claims the benefit of priority from the prior Korean Application No. 10-2021-018659, filed Dec. 23, 2021. FIELD The present disclosure relates to a rotating body inspection apparatus for an electrification component, and more particularly, to a rotating body inspection apparatus for an electrification component, wherein a diameter of a sub sprocket is less than a diameter of a main sprocket and an origin sensor and a position limit sensor are provided in a linear conversion portion to measure a position of the main sprocket. BACKGROUND Due to the recent surge in demand for electric vehicles, the demand for electrification components is increasing. Accordingly, inspection of components in a mass production system of electrification components is actively underway. Electrification components generally include rotating bodies, and thus, inspection apparatuses suitable for inspecting rotating bodies have been developed. In general, an electrification component includes hairpins repeatedly formed in a circumferential direction, and in order to precisely inspect them, a rotating body is repeatedly rotated by 360 degrees or more in an inspection apparatus. An optical system for precise inspection of a state of a hairpin includes a large optical system and a lighting system, and an adjusting instrument for precisely adjusting a position of the optical system has a considerable weight. Moreover, such an inspection apparatus for an electrification component is often mounted on an existing mass production facility, resulting in a limited available space. FIG. 1 shows a conventional inspection apparatus. A rotating body of an electrified component may be rotated while being seated on a sprocket, and at this time, an origin sensor and a position limit sensor for detecting a rotation angle of the sprocket are used. The origin sensor may detect a position at which the sprocket starts initial rotation and a position to which the sprocket rotates one turn (360 degrees). The position limit sensor may detect a position to which the sprocket rotates by one or more turns (e.g., 380 degrees) to limit the rotation of the sprocket. When the rotating body of the electrification component is inspected, the rotating body rotates by an angle greater than 360 degrees, and thus, overlapping may occur between the origin sensor and the position limit sensor in the case of use of one sprocket. Thus, as shown in FIG. 1, the conventional inspection apparatus uses two sprockets. Referring to FIG. 1, the conventional inspection apparatus includes a main sprocket 10 on which a rotating body is seated and a sub sprocket 20 connected to the main sprocket 10 through a chain 30. The sub sprocket 20 may include an origin sensor and a position limit sensor, and detect a rotating position of the main sprocket 10 through the origin sensor and the position limit sensor included in the sub sprocket 20. As described above, when the rotating body of the electrification component is inspected, the rotating body rotates by an angle greater than 360 degrees, and thus, the diameter of the sub sprocket 20 needs to be greater than the diameter of the main sprocket 10. The diameter of the sub sprocket 20 has to be greater than that of the main sprocket 10, but overlapping may not occur between the origin sensor for sensing one turn (360 degrees) of the rotating body and the position limit sensor for sensing one or more turns (e.g., 380 degrees) of the rotating body. More specifically, the diameter of a circumference of the sub sprocket 20 needs to be greater than a rotation angle (e.g., 380 degrees) of one or more turns required for the rotating body, but overlapping between the origin sensor and the position limit sensor may be prevented from occurring. However, as the diameter of the sub sprocket 20 increases, the size of the inspection apparatus also increases, raising a manufacturing cost and degrading space utilization. Moreover, as the diameter of the sub sprocket 20 increases, the main sprocket 10 cannot be rotated at high speed, increasing a basic track time. In addition, when the rotation angle of one or more turns required for the rotating body needs to be increased, a new sub sprocket has to be manufactured because the sub sprocket may be unavailable, and the diameter of the sub sprocket may not be unlimitedly increased depending on the rotation angle of one or more turns required for the rotating body due to space constraints. SUMMARY The present disclosure provides a rotating body inspection apparatus for an electrification component, wherein a diameter of a sub sprocket is less than a diameter of a main sprocket and an origin sensor and a position limit sensor are provided in a linear conversion portion to measure a position of the main sp