JP7176457B2 - ring inspection device - Google Patents

Description

This specification discloses a ring inspection apparatus.

Conventionally, as this type of ring inspection device, a loop material (ring) used as a belt of a continuously variable transmission is stretched over and held by applying tension to the loop material. and an inspection camera that captures an image of the loop material (see, for example, Patent Document 1). In this device, the loop material is rotated by a servomotor, the loop material is imaged by an inspection camera, and the presence or absence of defects in the loop material (defects in the welded portion) is inspected based on the obtained image.

JP 2010-14516 A

A belt of a continuously variable transmission (a binding ring for binding a large number of elements in an annular shape) is generally constructed by stacking a plurality of rings each having a different circumferential length. When inspecting a plurality of rings with different circumferences using the ring inspection device described in Patent Document 1, when winding a plurality of rings around a plurality of rollers, tension is applied only to the ring with the shortest circumference. No tension is applied to other rings having a longer circumference. Therefore, when the surfaces of a plurality of rings are simultaneously imaged by a camera, some of the rings do not rotate, making it difficult to inspect the plurality of rings at the same time with high accuracy.

The ring inspection device of the present disclosure inspects the ring by imaging the ring with an imaging device while rotating the ring. The main purpose is to enable

The ring inspection device of the present disclosure employs the following means to achieve the above-mentioned main purpose.

The ring inspection device of the present disclosure includes:
A ring inspection device for inspecting a plurality of endless rings having flexibility and having different circumferences,
a first roller pair including a drive roller that sandwiches the plurality of rings arranged in a direction perpendicular to the circumferential direction and rotates the ring in the circumferential direction;
a second roller pair that contacts the inner and outer peripheral surfaces of the plurality of rings on the upstream side in the rotational direction of the plurality of rings relative to the first roller pair;
a first imaging device that images one surface of the plurality of rings between the first roller pair and the second roller pair;
A plurality of guide rollers arranged outside the plurality of rings to guide the plurality of rings and having an annular rib portion extending radially to separate two adjacent rings among the plurality of rings. When,
The gist is to provide

The ring inspection apparatus of the present disclosure simultaneously inspects the surfaces of a plurality of endless rings that are flexible and have different circumferential lengths. This ring inspection device includes a first roller pair including driving rollers that hold a plurality of rings arranged in a direction orthogonal to the circumferential direction and rotate them in the circumferential direction, and an upstream roller pair in the rotational direction of the plurality of rings from the first roller pair. a second roller pair that abuts on the inner and outer peripheral surfaces of the plurality of rings on the side; and a first imaging device that images one surface of the plurality of rings between the first roller pair and the second roller pair. , a plurality of guide rollers arranged outside the plurality of rings to guide the plurality of rings. By guiding a plurality of rings from the outside with guide rollers, the shape of the longest ring with the longest circumference can be regulated, and rings with shorter circumferences do not protrude from the regulation range of the longest ring. can be regulated. Furthermore, since the guide roller has an annular rib portion that extends radially and separates two adjacent rings out of the plurality of rings, it is possible to prevent rings having different circumferential lengths from coming off. Therefore, the plurality of rings are rotated in the circumferential direction by the first roller pair, and the postures of the plurality of rings are held by the second roller pair on the upstream side in the rotation direction of the plurality of rings relative to the first roller pair. By imaging one surface of a plurality of rings with an imaging device, it is possible to simultaneously inspect the surfaces of the plurality of rings by rotating the plurality of rings having different circumferences without idling.

1 is a schematic configuration diagram of a continuously variable transmission having a transmission belt; FIG. It is a schematic block diagram of a power transmission belt. It is a side view of a ring inspection device. It is a top view of a ring inspection device. FIG. 4 is an enlarged view of a main part of FIG. 3; It is a side view of a ring inspection device of a comparative example.

FIG. 1 is a configuration diagram of a continuously variable transmission 1 having a transmission belt 10, and FIG. 2 is a schematic configuration diagram of the transmission belt. As shown in the figure, the continuously variable transmission 1 includes a primary shaft 2 as a drive-side rotation shaft, a primary pulley 3 that rotates integrally with the primary shaft 2, and a driven-side rotation shaft that is arranged in parallel with the primary shaft 2. a secondary shaft 4, a secondary pulley 5 rotating integrally with the secondary shaft 4, and a transmission belt wound around the pulley groove (V-shaped groove) of the primary pulley 3 and the pulley groove (V-shaped groove) of the secondary pulley 5 10. The primary shaft 2 is connected to an input shaft connected to a power source such as an engine via a forward/reverse switching mechanism. The secondary shaft 4 is connected to the drive shaft via a gear mechanism or differential gear. By changing the groove width of the primary pulley 3 and the groove width of the secondary pulley 5 , the continuously variable transmission 1 can change the torque transmitted to the primary shaft 2 steplessly and output it to the secondary shaft 4 . .

As shown in FIG. 2, the transmission belt 10 includes two laminated rings 12 formed by laminating a plurality of (nine in this embodiment) ring members 11 in the ring radial direction (thickness direction), and a laminated ring 12. and a plurality of (for example, several hundred) elements 20 arranged (bound) in an annular shape along the inner peripheral surface of the ring 12 .

The plurality of ring members 11 constituting the laminated ring 12 are each formed by welding flexible strips cut out from a steel plate drum into a ring shape. are machined to have different perimeter lengths.

Each element 20 is punched out of a steel plate by, for example, press working. As shown in FIG. A neck portion 22 extending to the outer peripheral side (outside in the radial direction of the transmission belt 10 and the laminated ring 12) and a neck portion 22 extending to both sides in the width direction of the body portion 21 so as to be separated from the body portion 21. and a head portion 23 including a pair of ear portions 23a. The width of the trunk portion 21 is the same as or larger than the width of the head portion 23, and the ear portions 23a of the trunk portion 21, the neck portion 22, and the head portion 23 define two ring accommodating portions (recesses) 24. be. In addition, one projection (dimple) 23p is formed in the central portion in the width direction of the front surface of the head portion 23, and a recess 23r is formed in the rear surface of the head portion 23 so as to be positioned behind the projection 23p. formed.

Laminated rings 12 are fitted into the ring accommodating portions 24 of each element 20 so as to sandwich the element 20 from both sides, and the projections 23p of each element 20 are loosely fitted into the recesses 23r of the adjacent elements 20. As shown in FIG. As a result, a large number of elements 20 are arranged in a ring and bundled by the two lamination rings 12 . Moreover, the surface (upper surface in FIG. 2) of the body portion 21 defining the ring accommodating portion 24 serves as a saddle surface 21a that contacts the inner peripheral surface of the laminated ring 12 (the innermost ring material 11). That is, the saddle surfaces 21a are positioned on both sides of the neck portion 22 in the width direction.

Further, the body portion 21 of each element 20 has a pair of side surfaces 21f formed so as to separate from each other as it goes from the inner peripheral side of the transmission belt 10 to the outer peripheral side (the outer side in the radial direction of the transmission belt, etc.). Each side face 21f is in frictional contact with the surfaces of the pulley groove of the primary pulley 3 and the pulley groove of the secondary pulley 5, receives clamping pressure from the pulleys 3 and 5, and transfers torque from the primary pulley 3 to the secondary pulley 5 due to the frictional force. It becomes a torque transmission surface (flank surface) for transmission.

A plurality of (nine) ring members 11 forming one laminated ring 12 in the transmission belt 10 thus constructed are manufactured as follows. First, a strip-shaped steel plate (maraging steel plate) wound around a drum is cut in the width direction to obtain strips (cutting process), and the ends of the strips are bent into a cylindrical shape so as to face each other to form a cylinder. forming a shape (bending process); Subsequently, the cylindrical body is washed and welded at the butted portions (welding process), solutionized (solution process), and the obtained cylindrical body is cut into a plurality of ring bodies having a predetermined width (cutting process ). Next, the cut surface of each ring body is polished by barrel polishing or the like (polishing step), and after removing the polishing dust and the like attached to the ring body by washing (pre-rolling washing step), the ring is polished using a rolling roller or the like. Rolling the body to the required length (rolling process). Then, the rolling oil or the like adhering to the ring body is removed by washing (post-rolling washing process), and after solution treatment (solution treatment process), the circumference of the ring body is adjusted (perimeter adjustment process). The peripheral length adjusting step is performed, for example, by spanning a rolled ring material between a pair of rolls and separating the pair of rolls from each other. In this embodiment, one laminated ring 12 is formed by laminating nine ring members 11, so that in the circumferential length adjustment step, nine ring bodies having different circumferential lengths are formed. The peripheral lengths of the nine ring bodies are adjusted. In the transmission belt 10 of the present embodiment, two laminated rings 12 are used for bundling the elements 20 , so a total of 18 ring members 11 are manufactured for one transmission belt 10 . After adjusting the circumference of the ring body, the ring material 11 is completed by subjecting the ring body to aging treatment and nitriding treatment (aging and nitriding process). The surfaces (inner peripheral surface and outer peripheral surface) of the plurality of completed ring members 11 are inspected by a ring inspection device.

3 is a side view of the ring inspection device, and FIG. 4 is a top view of the ring inspection device. As illustrated, the ring inspection device 50 sets a plurality of (four in the example shown in the figure) ring materials 11 arranged in a width direction orthogonal to the circumferential direction, and rotates the plurality of ring materials 11 in the circumferential direction. While rotating (counterclockwise rotation in the figure), the outer peripheral surface and the inner peripheral surface of the plurality of ring members 11 are imaged, and the presence or absence of scratches and defects in the plurality of ring members 11 is inspected based on the obtained images. It is something to do. As shown in the figure, the ring inspection device 50 includes a first roller pair 51 that sandwiches a plurality of ring materials 11 and rotates them in the circumferential direction, and a roller pair 51 that rotates the plurality of ring materials 11 in the circumferential direction with respect to the first roller pair 51 . A second roller pair 52 arranged with a gap on the upstream side in the rotation direction, a third roller pair 53 that sandwiches a plurality of ring members 11 and rotates to the same side as the first roller pair 51, and a third roller pair A fourth roller pair 54 that is spaced apart from 53 in the rotational direction upstream of the plurality of ring members 11 in the circumferential direction, and two guide rollers that are arranged on the outer side of the plurality of ring members 11 in the radial direction. 55, 56. Furthermore, the ring inspection device 50 includes a first imaging device 61 that images the outer peripheral surface (one surface) of the plurality of ring materials 11 between the first roller pair 51 and the second roller pair 52, and the first imaging device A first lighting device 71 that illuminates the imaging surface of 61, and a second imaging device that images the inner peripheral surface (the other surface) of the plurality of ring materials 11 between the third roller pair 53 and the fourth roller pair 54 62 and a second illumination device 72 that illuminates the imaging surface of the second imaging device 62 .

The first roller pair 51 includes an inner roller 511 made of resin that is cylindrical so as to contact the inner peripheral surfaces of the plurality of ring members 11 , and a cylindrical roller 511 that is formed in a columnar shape so as to contact the outer peripheral surfaces of the plurality of ring members 11 . and a resin-made outer roller 512 formed on the . As shown in FIG. 4, the inner roller 511 and the outer roller 512 are elongated so as to radially sandwich a plurality of ring members 11 aligned in the width direction. The first roller pair 51 rotates the plurality of ring members 11 in the circumferential direction by rotating the inner roller 511 with a motor (not shown) while holding the plurality of ring members 11 between the inner roller 511 and the outer roller 512 . rotate.

The second roller pair 52 includes an inner roller 521 made of resin which is formed in a columnar shape so as to contact the inner peripheral surfaces of the plurality of ring members 11, and a columnar roller 521 which is formed in a columnar shape so as to contact the outer peripheral surfaces of the plurality of ring members 11. and a resin-made outer roller 522 formed in the . A slight tension is applied to the plurality of ring members 11 between the first roller pair 51 and the second roller pair 52 by the first roller pair 51 and the second roller pair 52 . As shown in FIG. 4, the outer roller 522 has a plurality of annular ribs 522r extending in the radial direction and separating two adjacent ring members 11 out of the plurality of ring members 11. It guides the ring material 11 in the width direction and the radial direction. Thereby, the plurality of ring members 11 are rotated in the circumferential direction without coming into contact with each other. In this embodiment, the inner roller 521 is configured as a driven roller, but may be configured as a drive roller driven by a motor.

In the first roller pair 51 , the outer roller 512 is arranged at a position displaced from the inner roller 511 in the circumferential direction (upstream in the rotational direction of the ring member 11 ) with respect to the radial direction of the ring member 11 . In addition, in the second roller pair 52, the outer roller 522 is arranged at a position displaced from the inner roller 521 in the radial direction of the ring member 11 in the circumferential direction (downstream in the rotational direction of the ring member 11). Since the outer roller 522 has the annular rib 522r, it is arranged at a position where the annular rib 522r does not interfere with the inner roller 521. As a result, as shown in FIG. A flat surface is held between the first roller pair 51 and the second roller pair 52 .

The third roller pair 53 has an inner roller 531 similar to the inner roller 511 of the first roller pair 51 and an outer roller 532 similar to the outer roller 512 of the first roller pair 51, as shown in FIG. . The fourth roller pair 54 has an inner roller 541 similar to the inner roller 521 of the second roller pair 52 and an outer roller 542 similar to the outer roller 522 of the second roller pair 52, as shown in FIG. . In the third roller pair 53 , the outer roller 532 is arranged at a position displaced from the inner roller 531 in the circumferential direction (upstream in the rotational direction of the ring member 11 ) with respect to the radial direction of the ring member 11 . In the fourth roller pair 54, the outer roller 542 is arranged at a position displaced from the inner roller 541 in the radial direction of the ring member 11 in the circumferential direction (downstream in the rotational direction of the ring member 11). Since the outer roller 542 has an annular rib 542r, it is arranged at a position where the annular rib 542r does not interfere with the inner roller 541. As a result, the plurality of ring members 11 are arranged between the third roller pair 53 and the fourth roller pair. 54 so as to form a flat surface.

As shown in FIG. 4, the guide rollers 55 and 56 extend in the radial direction to separate two adjacent ring members 11 out of the plurality of ring members 11, similarly to the outer rollers 522 and 542. It has annular ribs 55r and 56r. As shown in FIG. 3, the guide rollers 55 and 56 are arranged radially outwardly of the plurality of ring members 11 so as to be in contact with the outer peripheral surface of the ring member 11 having the longest peripheral length. are placed after As a result, it is possible to reduce the clearance formed between the guide rollers 55 and 56 and the ring member having a shorter peripheral length than the longest ring member among the plurality of ring members 11, so that the plurality of ring members 11 can be arranged in the circumferential direction. It is possible to restrict the movement in the radial direction (horizontal direction in the figure) when rotating to the right. Furthermore, since the guide rollers 55 and 56 have a plurality of annular ribs 55r and 56r, it is possible to restrict the movement of the plurality of ring members 11 in the width direction, thereby preventing the ring members 11 from falling out of the ring inspection device 50. can be suppressed.

As shown in FIG. 3, the first lighting device 71 is arranged radially outward of the plurality of ring members 11, and is arranged on the outer peripheral surface between the first roller pair 51 and the second roller pair of the plurality of ring members 11. , that is, it illuminates the imaging surface of the first imaging device 61 . In this embodiment, the first lighting device 71 is arranged such that the optical axis of the light source is inclined with respect to the imaging surface (flat surface) of the ring material 11 .

As shown in FIG. 3 , the second lighting device 72 is arranged inside the plurality of ring members 11 in the radial direction, and is arranged inside the plurality of ring members 11 between the first roller pair 51 and the second roller pair. It illuminates the plane, that is, the imaging plane of the second imaging device 62 . In this embodiment, the second lighting device 72 is arranged such that the optical axis of the light source is inclined with respect to the imaging surface (flat surface) of the ring material 11 .

In this embodiment, inner rollers 511, 521, 531, 541 are configured as a single inner roller unit and outer rollers 512, 522, 532, 542, 55, 56 each include one or more rollers. It is configured as a plurality of outer roller units that are moved by a moving device (none shown). Then, by using an insertion machine to grip a plurality of ring members 11 and insert them into the inner roller unit, and driving the moving device to bring the plurality of outer roller units close to the outer peripheral surface of the plurality of ring members 11, A plurality of ring materials 11 are set in the ring inspection device 50 .

When a plurality of ring members 11 are set in the ring inspection device 50, the inner rollers 511 and 531 are rotationally driven by the motor, thereby simultaneously rotating the plurality of ring members 11 in the circumferential direction. Subsequently, while the plurality of ring members 11 are being rotated once, while illuminating the outer peripheral surface between the first roller pair 51 and the second roller pair 52 of the plurality of ring members 11 from the first lighting device 71, The peripheral surface is imaged by the first imaging device 61 . At the same time, while illuminating the inner peripheral surface between the third roller pair 53 and the fourth roller pair 54 of the plurality of ring members 11 from the second lighting device 72, the inner peripheral surface is imaged by the second imaging device 62. . Then, by comparing the obtained images of the plurality of ring members 11 with a pre-stored reference image, it is determined whether or not the surfaces of the plurality of ring members 11 have flaws or defects.

As described above, the outer rollers 512 of the first roller pair 51 are more likely to extend the ring material 11 than the inner rollers 511 so that the ring material 11 has a flat surface between the first roller pair 51 and the second roller pair 52 . The outer roller 522 of the second roller pair 52 is arranged at a position displaced in the circumferential direction with respect to the radial direction, and the outer roller 522 of the second roller pair 52 is arranged at a position displaced from the inner roller 521 in the circumferential direction with respect to the radial direction of the ring member 11 . Therefore, the first illumination device 71 can uniformly irradiate the outer peripheral surfaces of the plurality of ring members 11 with light, and the first imaging device 61 can acquire a good image suitable for inspection. As a result, it is possible to inspect the outer peripheral surfaces of the plurality of ring members 11 with good accuracy. Similarly, the outer roller 532 of the third roller pair 53 is arranged more radially of the ring member 11 than the inner roller 531 so that the ring member 11 has a flat surface between the third roller pair 53 and the fourth roller pair 54 . The outer roller 542 of the fourth roller pair 54 is arranged at a position shifted in the circumferential direction with respect to the radial direction of the ring member 11 relative to the inner roller 541 . Therefore, the second lighting device 72 can uniformly irradiate the outer peripheral surfaces of the plurality of ring members 11 with light, and the second imaging device 62 can acquire good images suitable for inspection. This makes it possible to inspect the inner peripheral surfaces of the plurality of ring members 11 with good accuracy.

As shown in FIG. 6, inner rollers 511B to 541B and outer rollers 512B to 542B, which are pairs of the first to fourth roller pairs 51B to 54B, are arranged to face each other along the radial direction of the ring material 11. In the ring inspection device 50B of the comparative example, the plurality of ring materials 11 are convexly curved between the first roller pair 51B and the second roller pair 52B and between the third roller pair 53B and the fourth roller pair 54B. curved convexly between For this reason, in the ring inspection apparatus 50B of the comparative example, the first and second imaging devices 61 and 62 are out of focus when the images are captured, and the illumination by the first and second lighting devices is uneven. A suitable good image cannot be obtained.

In the above-described embodiment, two guide rollers 55 and 56 are provided in addition to the first to fourth roller pairs 51 to 54 (outer rollers 512, 522, 532 and 542). Rollers may be provided, or guide rollers other than the first to fourth roller pairs 51 to 54 may not be provided.

In the above-described embodiment, a single inspection device including the first to fourth roller pairs 51 to 54, the guide rollers 55 and 56, and the first and second imaging devices 61 and 62 inspects the plurality of ring materials 11. Although both surfaces are inspected simultaneously, one surface and the other surface of the plurality of ring members 11 may be inspected separately by separate inspection devices.

As described above, the ring inspection device of the present disclosure is a ring inspection device (50) for inspecting a plurality of endless rings (11) having flexibility and having different circumference lengths. , a first roller pair (51) including a driving roller (511) for pinching and rotating the plurality of rings (11) arranged in a direction orthogonal to the circumferential direction; a second roller pair (52) in contact with the inner and outer peripheral surfaces of the plurality of rings (11) on the upstream side in the rotational direction of the plurality of rings (11); and the first roller pair (51) and the second roller pair (52), a first imaging device (61) for imaging one surface of the plurality of rings (11); An annular rib portion (55r, 56r, 522r, 542r) that guides the plurality of rings (11) and extends radially to separate two adjacent rings (11) among the plurality of rings (11). ) and a plurality of guide rollers (55, 56, 522, 542).

The ring inspection apparatus of the present disclosure simultaneously inspects the surfaces of a plurality of endless rings that are flexible and have different circumferential lengths. This ring inspection device includes a first roller pair including driving rollers that hold a plurality of rings arranged in a direction orthogonal to the circumferential direction and rotate them in the circumferential direction, and an upstream roller pair in the rotational direction of the plurality of rings from the first roller pair. a second roller pair that abuts on the inner and outer peripheral surfaces of the plurality of rings on the side; and a first imaging device that images one surface of the plurality of rings between the first roller pair and the second roller pair. , a plurality of guide rollers arranged outside the plurality of rings to guide the plurality of rings. By guiding a plurality of rings from the outside with guide rollers, the shape of the longest ring with the longest circumference can be regulated, and rings with shorter circumferences do not protrude from the regulation range of the longest ring. can be regulated. Furthermore, since the guide roller has an annular rib portion that extends radially and separates two adjacent rings out of the plurality of rings, it is possible to prevent rings having different circumferential lengths from coming off. Therefore, the plurality of rings are rotated in the circumferential direction by the first roller pair, and the postures of the plurality of rings are held by the second roller pair on the upstream side in the rotation direction of the plurality of rings relative to the first roller pair. By imaging one surface of a plurality of rings with an imaging device, it is possible to simultaneously inspect the surfaces of the plurality of rings by rotating the plurality of rings having different circumferences without idling.

In such a ring inspection device of the present disclosure, a third roller pair (53) including a drive roller (531) that pinches and rotates the plurality of rings (11) in the circumferential direction, and the third roller pair (53) a fourth roller pair (54) contacting the inner and outer peripheral surfaces of the plurality of rings (11) on the upstream side in the rotational direction of the plurality of rings (11); and the third roller pair (53) and a second imaging device (62) for imaging the other surface of the plurality of rings (11) between the fourth roller pair (54). This makes it possible to simultaneously inspect one surface and the other surface of a plurality of rings.

In the ring inspection device of the present disclosure in a mode comprising first to fourth roller pairs, the one of the plurality of rings (11) between the first roller pair (51) and the second roller pair (52) and a first lighting device (71) that illuminates the surface of the plurality of rings (11) between the third roller pair (53) and the fourth roller pair (54). and a second lighting device (72). Images suitable for inspection on both surfaces of a plurality of rings by imaging the respective surfaces with a first imaging device and a second imaging device while illuminating one surface and the other surface of the plurality of rings. can be obtained, and the accuracy of inspection can be improved.

Further, in the ring inspection device of the present disclosure having first to fourth roller pairs, the first roller pair (51) and the second roller pair (52) are included in the first roller pair (51). The plurality of rings (11) are configured to be flat between the first roller pair (51) and the second roller pair (52) when the driving rollers are driven, and the third roller The pair (53) and the fourth roller pair (54) form the third roller pair (53) and the fourth roller pair (54) when the driving rollers included in the third roller pair (53) are driven. ), the plurality of rings (11) may be configured to be flat. In this way, images can be captured by the first imaging device and the second imaging device while one surface and the other surface of the plurality of rings are held in an appropriate posture, and both surfaces of the plurality of rings can be inspected. suitable images can be obtained.

Furthermore, in the ring inspection device of the present disclosure in which the first to fourth roller pairs are provided, each of the first to fourth roller pairs (51 to 54) is arranged outside the plurality of rings (11) The outer rollers (512, 522, 532, 542) are arranged more in the plurality of rings (11) than the paired inner rollers (511, 521, 531, 541) located inside the plurality of rings (11). It may be arranged at a position shifted in the circumferential direction with respect to the radial direction. With this configuration, the plurality of rings can be held in a posture suitable for inspection between the first roller pair and the second roller pair with a simple structure, and between the third roller pair and the fourth roller pair. A plurality of rings can be held in a posture suitable for inspection.

In addition, in the ring inspection device of the present disclosure having first to fourth roller pairs, an inner roller (511) arranged inside the plurality of rings (11) of the first roller pair (51) and The inner rollers (512) of the third roller pair (53) arranged inside the plurality of rings (11) are configured as drive rollers, and the plurality of rollers of the first roller pair (51) The outer roller (512) arranged outside the ring (11) and the outer roller (532) arranged outside the plurality of rings (11) of the third roller pair (53) are driven rollers. may be configured. By doing so, the driving force can be well transmitted to the plurality of rings, and the plurality of rings can be rotated smoothly.

Further, in the ring inspection device of the present disclosure having the first to fourth roller pairs, the guide roller is one of the 1b to 4th roller pairs (51 to 54) outside the plurality of rings (11). It may also include a plurality of rollers (55, 56) that are provided separately from the outer rollers (512, 522, 532, 542) that are arranged in the inner wall.

In addition, in the ring inspection device of the present disclosure having the first to fourth roller pairs, the guide roller is arranged outside the plurality of rings (11) in the second roller pair (52). It may include a roller (522) and an outer roller (542) of said fourth roller pair (54) positioned outside said plurality of rings (11). In this way, the number of rollers can be reduced.

Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to such embodiments, and can of course be embodied in various forms without departing from the gist of the present disclosure. be.

The present disclosure is applicable to the manufacturing industry of ring inspection equipment.

1 continuously variable transmission, 2 primary shaft, 3 primary pulley, 4 secondary shaft, 5 secondary pulley, 10 transmission belt, 11 ring material, 12 laminated ring, 20 element, 21 trunk, 21a saddle surface, 22 neck, 23 Head Part 23a Ear Part 23p Projection 23r Recess 24 Ring Receiving Part 50, 50B Ring Inspection Device 51, 51B First Roller Pair 52, 52B Second Roller Pair 53, 53B Third Roller Pair 54 , 54B fourth roller pair, 55, 56 guide rollers, 55r, 56r, 522r, 542r rib, 61 first imaging device, 62 second imaging device, 71 first lighting device, 72 second lighting device, 511 to 541, 511B-541B inner rollers, 512-542, 512B-542B outer rollers.

Claims (8)

A ring inspection device for inspecting a plurality of endless rings having flexibility and having different circumferences,
a first roller pair including a drive roller that sandwiches the plurality of rings arranged in a direction perpendicular to the circumferential direction and rotates the ring in the circumferential direction;
a second roller pair that contacts the inner and outer peripheral surfaces of the plurality of rings on the upstream side in the rotational direction of the plurality of rings relative to the first roller pair;
a first imaging device that images one surface of the plurality of rings between the first roller pair and the second roller pair;
A plurality of guide rollers arranged outside the plurality of rings to guide the plurality of rings and having an annular rib portion extending radially to separate two adjacent rings among the plurality of rings. When,
A ring inspection device comprising: The ring inspection device according to claim 1,
a third roller pair including a drive roller that sandwiches the plurality of rings and rotates them in the circumferential direction;
a fourth roller pair that contacts the inner and outer peripheral surfaces of the plurality of rings on the upstream side in the rotational direction of the plurality of rings relative to the third roller pair;
a second imaging device for imaging the other surface of the plurality of rings between the third roller pair and the fourth roller pair;
A ring inspection device comprising: The ring inspection device according to claim 2,
a first lighting device that illuminates the one surface of the plurality of rings between the first roller pair and the second roller pair;
a second lighting device that illuminates the other surface of the plurality of rings between the third roller pair and the fourth roller pair;
A ring inspection device comprising: The ring inspection device according to claim 2 or 3,
The first roller pair and the second roller pair are configured so that the plurality of rings are flat between the first roller pair and the second roller pair when the driving roller included in the first roller pair is driven. is configured to be
The third roller pair and the fourth roller pair are arranged such that the plurality of rings are flat between the third roller pair and the fourth roller pair when the driving roller included in the third roller pair is driven. configured to be
Ring inspection device. The ring inspection device according to any one of claims 2 to 4,
Outer rollers of the first to fourth roller pairs, which are respectively arranged outside the plurality of rings, are arranged in the radial direction of the plurality of rings more than the paired inner rollers arranged inside the plurality of rings. is arranged at a position displaced in the circumferential direction with respect to
Ring inspection device. The ring inspection device according to any one of claims 2 to 5,
an inner roller arranged inside the plurality of rings among the first roller pair and an inner roller arranged inside the plurality of rings among the third roller pair are configured as drive rollers,
An outer roller arranged outside the plurality of rings in the first roller pair and an outer roller arranged outside the plurality of rings in the third roller pair are configured as driven rollers,
Ring inspection device. The ring inspection device according to any one of claims 2 to 6,
The guide rollers include a plurality of rollers provided separately from the outer rollers arranged outside the plurality of rings among the first to fourth roller pairs,
Ring inspection device. The ring inspection device according to any one of claims 2 to 7,
The guide roller includes an outer roller arranged outside the plurality of rings in the second roller pair and an outer roller arranged outside the plurality of rings in the fourth roller pair,
Ring inspection device.

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