JP6072550B2 - Cylindrical member inspection apparatus and inspection method - Google Patents

Description

  The present invention relates to a cylindrical member inspection apparatus and a cylindrical member inspection method for inspecting a cylindrical member having a joint.

  In the green tire molding step, a cylindrical member is manufactured by winding a band-shaped member made of rubber or the like around a molding drum and then joining the ends of the band-shaped member. In that case, the edge part of a strip | belt-shaped member is faced | matched (or overlapped), it joins, and the junction part which consists of the edge part of the joined strip | belt-shaped member is formed in a cylindrical member. In order to ensure the quality of the joint, the joint is inspected every time a cylindrical member is manufactured. On the other hand, a belt-shaped member side length device for obtaining a lap amount of a joint portion from the outside of a cylindrical member arranged on a forming drum is conventionally known (see Patent Document 1).

  However, in this conventional side length device, although the lap amount of the joint portion can be inspected, there is a possibility that the joint portion cannot be easily inspected depending on a defect generated in the joint portion of the cylindrical member. That is, when a defect (for example, a hole or a gap) that penetrates the joint portion occurs, it is difficult to accurately grasp the joint portion defect from the lap amount, and it is difficult to detect the defect with high accuracy. Therefore, there is room for improvement from the viewpoint of further improving the accuracy of inspection of the joint. In particular, when the band-shaped members are butt-joined, defects penetrating the bonded portion are likely to occur due to the setting accuracy of the band-shaped members, the properties of the end portions of the band-shaped members, and the contraction of the band-shaped members. Therefore, in such a cylindrical member, it is strongly required to detect a defect penetrating the joint.

International Publication No. 2006/019070

  The present invention has been made in view of the above-described conventional problems, and its purpose is to detect a defect penetrating a joint portion when inspecting a joint portion of a cylindrical member made of a joined strip-shaped member. It is to improve the accuracy of inspection of the joint.

The present invention relates to a cylindrical member inspection apparatus for inspecting a joined portion of a cylindrical member made of a joined belt-shaped member, and has a holding means for holding the cylindrical member from the outside, and a conveyance path for the cylindrical member And a conveying means that conveys the cylindrical member held by the holding means along the conveying path, and is provided in the conveying means, and irradiates light from the outside of the cylindrical member toward the joint portion. An imaging unit that is arranged inside the cylindrical member held by the holding unit in accordance with the conveyance of the cylindrical member by the light irradiation unit and picks up the light-irradiated joint from the inside of the cylindrical member. And a defect detection means for detecting a defect of the joint through which light is transmitted based on a captured image of the imaging means, and the holding means arranges the joint at a position where the light irradiated by the light irradiation means hits The cylindrical member is held in the An inspection apparatus of a tubular member for holding the joint so as to be positioned between the arranged image pickup means and the light irradiating means to the inside.
Further, the present invention is a cylindrical member inspection method for inspecting a joint portion of a cylindrical member made of a joined belt-shaped member, and the step of holding the cylindrical member from the outside by the holding means included in the conveying means ; And the step of moving the conveying means along the conveying path of the cylindrical member and conveying the cylindrical member held by the holding means along the conveying path, and the light irradiation means provided in the conveying means, With the step of irradiating light from the outside of the member toward the joint, and the conveyance of the cylindrical member by the conveyance unit, the imaging unit is arranged inside the cylindrical member held by the holding unit , a step of imaging the junction light is irradiated from the inside of the tubular member, on the basis of the captured image of the imaging means, and detecting defects in joints which light is transmitted, the possess, by the holding means, The light irradiated by the light irradiation means hit Holds the tubular member in the state in which the joint position, the inspection method of the tubular member for holding the joint so as to be positioned between the cylindrical imaging means and the light irradiating means disposed on the inner side of the member It is.

  ADVANTAGE OF THE INVENTION According to this invention, when test | inspecting the junction part of the cylindrical member consisting of the joined strip | belt-shaped member, the defect which penetrates a junction part can be detected and the precision of the test | inspection of a junction part can be improved.

It is a side view which shows the tire manufacturing apparatus of this embodiment. It is a front view of the conveying apparatus and the inspection apparatus of a cylindrical member seen from the W direction of FIG. It is a figure which shows a conveyance apparatus and the inspection apparatus of a cylindrical member corresponding to FIG. It is a top view which shows the inspection apparatus of a cylindrical member seeing from the Z direction of FIG.

DESCRIPTION OF EMBODIMENTS An embodiment of a cylindrical member inspection apparatus and inspection method of the present invention will be described with reference to the drawings.
In the cylindrical member inspection apparatus according to the present embodiment (hereinafter simply referred to as an inspection apparatus), the joint portion of the tubular member formed of the joined belt-like members is inspected to detect a defect in the joint portion. Below, the example which provides an inspection device in the tire manufacturing apparatus which manufactures a raw tire, and test | inspects the junction part of a cylindrical member within a tire manufacturing apparatus is demonstrated.

FIG. 1 is a side view showing a tire manufacturing apparatus of the present embodiment, and shows a schematic configuration of the tire manufacturing apparatus.
As shown in the figure, the tire manufacturing apparatus 1 includes a first molding apparatus 10 that molds the cylindrical member 2, a second molding apparatus 20 that combines the cylindrical member 2 with another member 3, and the cylindrical member 2. A transport device 30, an inspection device 40 (partly indicated by a dotted line in FIG. 1), and a control device 4 are provided. The tire manufacturing device 1 is controlled by the control device 4 to execute a raw tire manufacturing operation.

  The first molding device 10 includes a first molding drum 11, a driving device 12 for the first molding drum 11, and an expansion / contraction mechanism (not shown) of the first molding drum 11. The first forming drum 11 is rotated by being driven by the driving device 12, and is rotated by a predetermined angle and stopped. The belt-like member 2A is wound around the outer periphery of the rotating first forming drum 11 and arranged in a cylindrical shape. In addition, the front end portion and the rear end portion of the belt-like member 2A are arranged to face each other on the outer periphery of the first forming drum 11, and are joined by a joining device (not shown). The front end portion and the rear end portion of the band-shaped member 2A are a front end portion and a rear end portion of the band-shaped member 2A when wound around the first forming drum 11.

  By joining the belt-like member 2A, the belt-like member 2A is formed into a cylindrical shape (here, a cylindrical shape), and a cylindrical member 2 (here, a cylindrical member) having a joint portion 2B is manufactured. The joining portion 2B is a portion where the end portions of the band-like member 2A are joined to each other, and is formed linearly at a predetermined position of the tubular member 2. In the first molding apparatus 10, the end portions of the band-shaped member 2 </ b> A are abutted and joined without being overlapped to form a joint portion 2 </ b> B extending in the axial direction of the first molding drum 11. Therefore, the joining portion 2B is a butt joint portion obtained by butt joining the end portions of the belt-like member 2A, and the tubular member 2 is composed of one belt-like member 2A that is butt joined.

  2 A of strip | belt-shaped members of this embodiment are tire structural members which consist of a strip | belt-shaped rubber member, and it combines with another tire structural member and becomes a part of raw tire. The rubber member is a member made only of rubber (unvulcanized rubber) or a member made of rubber and another member, and is disposed in the raw tire in a cylindrical state. Here, the belt-like member 2A is a belt-like rubber-covered member in which a reinforcing cord is covered with rubber, and is used as a carcass member (carcass ply). A plurality of reinforcing cords arranged in parallel are arranged along the width direction of the belt-like member 2A and covered with rubber. Only one belt-like member 2 </ b> A (carcass member) is wound around and joined to the first molding drum 11 without arranging other tire constituent members (inner liner members or the like) on the outer periphery of the first molding drum 11.

  The second molding device 20 includes a second molding drum 21, a driving device 22 for the second molding drum 21, and an expansion / contraction mechanism (not shown) of the second molding drum 21. The second forming drum 21 is rotated by being driven by the driving device 22 and is rotated by a predetermined angle and stopped. After the pair of side members 3A is wound around the second molding drum 21, the inner liner member 3B is wound around the second molding drum 21 and the side member 3A. Thereby, the inner member 3 including the pair of side members 3A and the inner liner member 3B is formed. The inner member 3 is a member disposed inside the cylindrical member 2 when the green tire is molded, and is molded into a cylindrical shape by the second molding drum 21.

  The transport device 30 includes a guide rail 31, a moving portion 32 guided by the guide rail 31, and an annular holding portion 33 that holds the tubular member 2. The moving unit 32 is moved along the guide rail 31 by, for example, a rotating body rotated by a motor, and the conveying device 30 is moved along the conveying path K of the cylindrical member 2. Due to the movement of the conveying device 30, the holding unit 33 moves to a position where the first molding drum 11 is accommodated and a position where the second molding drum 21 is accommodated. At that time, the holding portion 33 moves along the axial direction of the forming drums 11 and 21. The forming drums 11 and 21 enter the holding unit 33 that moves, and are disposed inside the holding unit 33 (internal space).

  After manufacturing the cylindrical member 2, the conveying device 30 moves and the first forming drum 11 and the cylindrical member 2 are arranged inside the holding portion 33. In this state, after holding the cylindrical member 2 by the holding portion 33, the first molding drum 11 is reduced. Thereby, the cylindrical member 2 is removed from the first molding drum 11 and held by the holding portion 33. Further, the cylindrical member 2 is transported along the transport path K from the first molding drum 11 to the second molding drum 21 by the transport device 30, and the inner member 3 molded on the second molding drum 21. Place outside.

  Next, by slightly expanding the second forming drum 21, the inner member 3 is brought into close contact with the cylindrical member 2, and the cylindrical member 2 and the inner member 3 are combined. Thereafter, the holding of the cylindrical member 2 by the holding portion 33 is released, and the conveying device 30 is separated from the second forming drum 21. The tubular member 2 and the inner member 3 are combined with other tire constituent members to form a raw tire, and the raw tire is vulcanized to produce a tire.

  During molding of the raw tire, the inspection device 40 inspects the joint 2B of the tubular member 2. The inspection device 40 inspects the joining portion 2B of the belt-like member 2A inside the cylindrical member 2 held by the transport device 30, and detects defects in the joining portion 2B. Hereinafter, the conveyance device 30 and the inspection device 40 will be described in detail.

FIG. 2 is a front view of the transport device 30 and the inspection device 40 as viewed from the direction W in FIG. 1, and only the guide rail 31 is shown in cross section. In FIG. 2, the conveyance apparatus 30 holding the cylindrical member 2 is shown.
FIG. 3 is a view showing the transport device 30 and the inspection device 40 in correspondence with FIG. In FIG. 3, the holding unit 33 of the transport device 30 is shown as viewed from the XX direction in FIG. 2, and the inspection device 40 is shown as viewed from the Y direction in FIG. 2.
FIG. 4 is a plan view showing the inspection apparatus 40 as seen from the Z direction in FIG. 3.

  As shown in the figure, the holding unit 33 of the transport device 30 includes a cylindrical support member 34, a plurality of holding members 35, a suction means 36 provided on the holding member 35, a displacement means 37 of the holding member 35, A detection sensor 38 for the cylindrical member 2 is provided. The support member 34 is installed in the upper part of the moving part 32, and supports the several holding member 35 so that a movement to a radial direction is possible. The detection sensor 38 is fixed to the inner surface (upper part and lower part) of the support member 34, and detects the tubular member 2 through between the adjacent holding members 35. Based on this detection result, the control device 4 (see FIG. 1) determines the presence or absence of the cylindrical member 2 in the holding portion 33.

  The plurality of holding members 35 are segments (see FIG. 2) divided in the circumferential direction, and are arranged in a cylindrical shape inside the support member 34. The cylindrical member 2 is arranged inside the plurality of holding members 35 by the movement of the transport device 30. Each holding member 35 is formed in an arc shape that gently curves corresponding to the outer periphery of the cylindrical member 2, and is displaced in the radial direction by the displacing means 37. The displacement means 37 is composed of a piston / cylinder mechanism attached to the support member 34, and is connected to the outer surface of the holding member 35. The plurality of holding members 35 are displaced by the displacing means 37 between a position away from the tubular member 2 (enlarged position) and a position approaching the tubular member 2 (reduced position).

  The suction means 36 has, for example, a plurality of suction pads connected to a suction device, and is attached to the inner surfaces of the plurality of holding members 35. When holding the cylindrical member 2, the plurality of holding members 35 are brought close to the cylindrical member 2 by the displacement means 37, and the suction means 36 is brought into contact with the outer periphery of the cylindrical member 2. The cylindrical member 2 is held by adsorbing the outer periphery of the cylindrical member 2 by the adsorption means 36. The conveyance device 30 conveys the cylindrical member 2 held by the plurality of holding members 35 and the suction means 36 while maintaining the cylindrical shape. When releasing the holding of the cylindrical member 2, the adsorption of the cylindrical member 2 by the adsorption means 36 is stopped and the plurality of holding members 35 are separated from the cylindrical member 2.

  The conveyance device 30 constitutes a part of the inspection device 40 and inspects the joint 2B in conjunction with a part of the inspection device 40 provided outside the conveyance device 30. Specifically, the holding unit 33 is a holding unit 41 of the cylindrical member 2 included in the inspection device 40, and the conveyance device 30 is a conveyance unit 42 of the cylindrical member 2 included in the inspection device 40. The holding means 41 holds the cylindrical member 2 from the outside, and the conveying means 42 conveys the cylindrical member 2 held by the holding means 41 along the conveyance path K. The inspection device 40 includes a light irradiation unit 43, an imaging unit 44, and a moving unit 50, and inspects the joint portion 2 </ b> B of the cylindrical member 2 along the conveyance path K.

  The light irradiation means 43 is a rod-like light emitting means made of an LED (Light Emitting Diode), and is provided on the transport means 42 along the center line of the holding means 41 (holding portion 33). Further, the light irradiation means 43 is fixed to the inner surface of the support member 34 so as to be located below the center line of the holding means 41 (here, obliquely below), and passes between the holding members 35 adjacent to each other. The inside of the holding member 35 is irradiated with light.

  Before holding the cylindrical member 2 by the holding means 41, the first forming drum 11 is rotated, and the joining portion 2 </ b> B is disposed at a predetermined position (an obliquely lower position) corresponding to the light irradiation means 43. In this state, the cylindrical member 2 is held by the holding means 41, and the joint portion 2 </ b> B is arranged at a position where the light irradiated by the light irradiation means 43 is hit. The light irradiation means 43 irradiates light from the outside of the cylindrical member 2 toward the joint 2B of the cylindrical member 2 in the middle of conveyance in the conveyance path K. The light is irradiated to the entire joint 2B, and when a defect (for example, a hole or a gap) penetrating the joint 2B occurs, the light passes through the defect of the joint 2B and leaks inside the cylindrical member 2.

  The imaging unit 44 is moved in and out of the transport path K by the moving unit 50 and is disposed at a position in the transport path K corresponding to the center of the cylindrical member 2. In this state, the conveying unit 42 conveys the cylindrical member 2 toward the imaging unit 44, so that the imaging unit 44 enters the inside of the cylindrical member 2. Further, as the cylindrical member 2 is conveyed, the imaging unit 44 relatively moves along the joint 2B. Therefore, the conveying means 42 is a relative moving means 46 provided in the inspection apparatus 40, and relatively moves the imaging means 44 along the joint portion 2B inside the cylindrical member 2.

  The imaging means 44 is composed of a digital camera or a digital video camera for taking an image, and is arranged inside the cylindrical member 2 held by the holding means 41 (here, the center of the cylindrical member 2). The joint 2 </ b> B of the cylindrical member 2 is held by the holding means 41 so as to be positioned between the imaging means 44 and the light irradiation means 43. The imaging unit 44 captures an image of the joint 2B irradiated with light from the light irradiation unit 43 from the inside of the cylindrical member 2, and acquires an entire image of the joint 2B. At that time, the imaging unit 44 sequentially images the joint portion 2B of the tubular member 2 being transported while moving relatively in the transport path K, and images the entire joint portion 2B. When a defect that penetrates the joint 2B occurs, light that has passed through the defect is imaged in the joint 2B by the imaging means 44.

  In addition, the imaging unit 44 includes an imaging unit 45 arranged corresponding to the positions of the joint 2 </ b> B and the light irradiation unit 43. The imaging unit 45 captures an image of the joint 2B in a state where the imaging unit 45 is disposed on the inner side of the tubular member 2 and below the horizontal direction (in this case, obliquely below). Correspondingly, the holding means 41 holds the cylindrical member 2 so that the joint portion 2B is positioned in the imaging direction of the imaging unit 45. The imaging unit 44 images the joint portion 2 </ b> B located on the radially outer side of the cylindrical member 2 from the center of the cylindrical member 2.

  An image (captured image) captured by the imaging unit 44 is transmitted to the control device 4 (see FIG. 1) including a computer. The control device 4 (computer) analyzes the captured image based on a predetermined program to determine the presence / absence of a defect in the joint 2B, and detects the defect in the joint 2B. At that time, the control device 4 determines the presence / absence of a defect and detects the defect based on the light transmitted through the joint 2B of the captured image.

  Regarding the processing performed by the control device 4, for example, the luminance value for each pixel (luminance detection value) of the captured image is compared with a predetermined luminance reference value, and whether or not the luminance value of the pixel is larger than the reference value is determined. judge. Based on this determination result, a high-luminance pixel having a luminance value larger than the reference value is determined, and when a predetermined number or more of the high-luminance pixels are gathered, a defect that allows light to pass through the junction 2B occurs. It is determined that Thereby, while detecting the defect of the junction part 2B, the part where the high-intensity pixel gathered is determined as the defect occurrence position. When the control device 4 detects a defect, the control device 4 notifies the operator of the occurrence of the defect and displays the position of the defect on the monitor.

  As described above, the control device 4 constitutes a part of the inspection apparatus 40, and functions (comparison means, determination means, determination means, defect detection means, etc.) that perform the above-described processes as function realizing means provided in the inspection apparatus 40. Notification means). The inspection device 40 inspects the joint portion 2B of the cylindrical member 2 by the defect detection means 47 or the like. The defect detection unit 47 detects a defect of the joint portion 2 </ b> B through which light is transmitted based on the captured image of the imaging unit 44.

  The moving unit 50 (see FIGS. 2 to 4) of the imaging unit 44 includes a support column 51, an L-shaped movable member 60, a support unit 52 for the movable member 60, a fixed member 53, and a drive unit 54. The support column 51 is installed on the side of the transport unit 42 and at a position away from the transport unit 42. The support means 52 is fixed to the upper end portion of the support column 51, and the fixing member 53 is fixed to the intermediate portion of the support column 51.

  The movable member 60 includes a linear connecting portion 61 connected to the support means 52 and a linear protruding portion 62 protruding from the distal end portion of the connecting portion 61. The support means 52 has a rotating shaft 52A attached to a portion of the connecting portion 61 on the base end portion 63 side, and supports the connecting portion 61 in a rotatable manner. The protruding portion 62 protrudes in the direction of bending with respect to the connecting portion 61 and is disposed horizontally along the transport path K. The imaging means 44 is attached to the tip of the protrusion 62 and is arranged in a predetermined direction.

  The driving means 54 is composed of a piston / cylinder mechanism arranged upward, and is rotatably connected to the base end portion 63 of the connecting portion 61 and the fixing member 53. The base end portion 63 of the connecting portion 61 is pushed up or pulled down by the driving means 54 and moves in the vertical direction about the rotation shaft 52A.

  When the base end portion 63 is moved to one side (the upper side in FIG. 2) by the driving means 54, the connecting portion 61 rotates around the rotation shaft 52A, and the protruding portion 62 moves downward. As a result, the entire movable member 60 and the imaging unit 44 move out of the conveyance path K, and the imaging unit 44 does not interfere with the conveyance of the cylindrical member 2 by the conveyance unit 42 (two points in FIG. 2). (Position indicated by a chain line). From this state, when the base end portion 63 is moved to the other side (lower side in FIG. 2) by the driving means 54, the connecting portion 61 rotates around the rotation shaft 52A, and the protruding portion 62 moves upward. As a result, a part of the movable member 60 and the imaging unit 44 are moved into the transport path K, and the imaging unit 44 is arranged at the second position P2 (a position indicated by a solid line in FIG. 2) for imaging the joint portion 2B. The The second position P2 is a position corresponding to the inside of the cylindrical member 2 set in the transport path K. The moving means 50 moves the imaging means 44 to the first position P1 outside the transport path K and the second position P2 inside the transport path K, and moves the imaging means 44 outside the transport path K or inside the transport path K. Deploy.

Next, a procedure for inspecting the joint 2B of the tubular member 2 by the inspection device 40 will be described.
First, the cylindrical member 2 is molded on the first molding drum 11 (see FIG. 1), and the cylindrical member 2 is held from the outside by the holding means 41. Further, the movable member 60 and the imaging unit 44 are moved by the moving unit 50 (see FIGS. 2 and 3), and the imaging unit 44 is arranged at the second position P2 where the joint portion 2B is imaged. In this state, the cylindrical member 2 held from the outside is conveyed by the conveying means 42 to the imaging means 44 side (second molding drum 21 side) along the conveying path K, and the joining portion 2B is conveyed along the conveying path K. Inspect.

  At the time of inspection of the joint portion 2B, the light irradiation means 43 irradiates light from the outside of the cylindrical member 2 being conveyed toward the joint portion 2B. Further, as the cylindrical member 2 is conveyed by the conveying unit 42, the cylindrical member 2 approaches the imaging unit 44, and the protruding unit 62 of the imaging unit 44 and the movable member 60 is inserted into the cylindrical member 2. Subsequently, the imaging unit 44 is relatively moved along the joint portion 2 </ b> B inside the cylindrical member 2 by the conveying unit 42 (relative moving unit 46). By this imaging means 44 that moves relative to each other, the joint portion 2B is imaged inside the cylindrical member 2 being conveyed.

  The imaging unit 44 images the joint 2 </ b> B irradiated with light from the inside of the cylindrical member 2, and the captured image is analyzed by the control device 4. In the control device 4, the defect detection unit 47 detects the defect of the joint portion 2 </ b> B through which light is transmitted based on the image captured by the imaging unit 44. Thereby, the joining part 2B of the cylindrical member 2 consisting of the joined strip-like member 2A is inspected.

  After the inspection of the joint portion 2B is completed, the cylindrical member 2 is conveyed by the conveying means 42 in the direction opposite to the conveying direction during the inspection, and the projection means 62 of the imaging means 44 and the movable member 60 is connected to the cylindrical member 2. Take out. Next, the movable member 60 and the imaging unit 44 are moved by the moving unit 50, and the imaging unit 44 is disposed at the first position P1 outside the conveyance path K. Thereafter, the cylindrical member 2 is conveyed to the second molding drum 21 by the conveying means 42.

  As described above, in the present embodiment, since the defect of the joint 2B through which light is transmitted is detected based on the captured image of the joint 2B irradiated with light, the defect penetrating the joint 2B is accurately detected. It can be detected. Moreover, while being able to test | inspect the junction part 2B easily, the test | inspection precision of the junction part 2B can be improved. By imaging the joint 2B while the imaging unit 44 moves relatively along the joint 2B, the entire joint 2B can be accurately imaged. By orienting the image pickup unit 45 of the image pickup unit 44 to the lower side than the horizontal direction, it is possible to prevent dust and the like from adhering to the image pickup unit 45, and thus it is possible to prevent a reduction in image quality. As a result, it is possible to prevent a decrease in inspection accuracy of the joint portion 2B.

  Since the joint portion 2B is inspected along the transport path K of the tubular member 2, the joint portion 2B can be easily inspected during the transport of the tubular member 2. By moving the imaging means 44 to the first position P1 outside the transport path K and the second position P2 within the transport path K, the transport of the cylindrical member 2 and the inspection of the joint portion 2B can be performed smoothly. it can.

  When the light irradiation means 43 is provided inside the cylindrical member 2 and the imaging means 44 is provided outside the cylindrical member 2, the holding means 41 becomes an obstacle, making it difficult for the imaging means 44 to take an image of the joint portion 2B. May be. Further, since the light is blocked by the holding means 41, there is a possibility that the light transmitted through the joint portion 2B cannot be accurately imaged. On the other hand, in this embodiment, since the joining part 2B is imaged from the inside of the cylindrical member 2, the light which permeate | transmits the joining part 2B can be imaged easily and correctly. As a result, the inspection accuracy of the joint portion 2B can be reliably improved.

  The light irradiation means 43 may be arranged at a position different from the above on the outside of the cylindrical member 2. Here, since the detection sensors 38 are disposed on the upper and lower portions of the support member 34, the light irradiation means 43 is disposed obliquely below the support member 34. On the other hand, the position of the detection sensor 38 may be changed, and the light irradiation means 43 may be disposed below (or above) the support member 34. However, if the light irradiation means 43 is attached to the holding member 35, the light irradiation means 43 and the holding member 35 may become unstable. Therefore, the light irradiation means 43 is preferably attached to the support member 34.

  Corresponding to the position of the light irradiation means 43, the imaging means 44 may be arranged at a position different from the above inside the cylindrical member 2. Further, the imaging unit 44 may be moved along the joint portion 2B by moving the imaging unit 44 inside the cylindrical member 2. In this case, for example, a moving mechanism of the imaging unit 44 is provided between the imaging unit 44 and the movable member 60, and the imaging unit 44 is moved by the moving mechanism. You may make it test | inspect the junction part 2B of the cylindrical member 2 by arrange | positioning the test | inspection apparatus 40 in the direction opposite to this embodiment. That is, the inspection device 40 may be configured symmetrically with respect to the state shown in FIG. 3 and may be arranged from the opposite side of the position shown in FIG. 3 toward the transport device 30 (holding means 41).

  The case where the belt-like member 2A is a carcass member has been described above as an example, but the belt-like member 2A may be a member other than the carcass member. According to the inspection apparatus 40 (inspection method) of the present embodiment, it is possible to accurately inspect the cylindrical member 2 composed of various strip-shaped members 2A.

  DESCRIPTION OF SYMBOLS 1 ... Tire manufacturing apparatus, 2 ... Cylindrical member, 2A ... Band-shaped member, 2B ... Joining part, 3 ... Inner member, 3A ... Side member, 3B ... Inner liner Member, 4 ... Control device, 10 ... First molding device, 11 ... First molding drum, 12 ... Drive device, 20 ... Second molding device, 21 ... Second forming drum, 22 ... Drive device, 30 ... Conveying device, 31 ... Guide rail, 32 ... Moving part, 33 ... Holding part, 34 ... Support member, 35. ..Holding member 36 ... Adsorption means 37 ... Displacement means 38 ... Detection sensor 40 ... Inspection device for cylindrical member 41 ... Holding means 42 ... Conveying means , 43 ... Light irradiation means, 44 ... Imaging means, 45 ... Imaging section, 46 ... Relative movement means, 47 ... Defects Extraction means, 50 ... moving means, 51 ... support, 52 ... support means, 52A ... rotating shaft, 53 ... fixed member, 54 ... driving means, 60 ... movable member , 61 ... connecting part, 62 ... projecting part, 63 ... base end part, K ... transport path.

Claims (6)

A cylindrical member inspection apparatus for inspecting a joint portion of a cylindrical member composed of a joined band-shaped member,
A holding unit that holds the cylindrical member from the outside, a conveying unit that moves along the conveying path of the cylindrical member, and that conveys the cylindrical member held by the holding unit along the conveying path ;
A light irradiating means provided on the conveying means for irradiating light from the outside of the cylindrical member toward the joint;
With the conveyance of the cylindrical member by the conveyance means, an imaging means that is arranged inside the cylindrical member held by the holding means and images the joint irradiated with light from the inside of the cylindrical member;
A defect detection means for detecting a defect of a joint through which light is transmitted based on a captured image of the imaging means ,
The holding means holds the cylindrical member in a state where the joint portion is disposed at a position where the light irradiated by the light irradiation means is applied, and is positioned between the imaging means and the light irradiation means arranged inside the cylindrical member. An inspection apparatus for a cylindrical member that holds a joint portion in a manner as described above . In the cylindrical member inspection apparatus according to claim 1,
The conveying means is a relative moving means for relatively moving the imaging means along the joint inside the cylindrical member,
A cylindrical member inspection apparatus in which an imaging unit images a joint portion while relatively moving. In the cylindrical member inspection apparatus according to claim 1 or 2,
A cylindrical member inspection apparatus having an imaging unit that images a joint in a state in which the imaging unit is disposed below the horizontal direction. In the cylindrical member inspection device according to any one of claims 1 to 3,
A cylindrical member inspection apparatus comprising: an imaging unit including a moving unit that moves the imaging unit to a position outside the conveyance path that does not hinder the conveyance of the cylindrical member; A method for inspecting a tubular member for inspecting a joint portion of a tubular member composed of a joined belt-shaped member ,
A step of holding the cylindrical member from the outside by the holding means of the conveying means;
A step of moving the conveying means along the conveying path of the cylindrical member and conveying the cylindrical member held by the holding means along the conveying path;
A step of irradiating light from the outside of the cylindrical member toward the joining portion by the light irradiation means provided in the conveying means;
As the cylindrical member is conveyed by the conveying means, the imaging means is arranged inside the cylindrical member held by the holding means, and the imaging unit picks up the light-irradiated joint from the inside of the cylindrical member. Process,
A step of detecting a defect of a joint through which light is transmitted based on a captured image of the imaging means,
The holding means holds the cylindrical member in a state in which the joint portion is arranged at a position where the light irradiated by the light irradiation means hits, and is positioned between the imaging means and the light irradiation means arranged inside the cylindrical member. The inspection method of the cylindrical member which hold | maintains a junction part . Te inspection method odor of the described cylindrical member to claim 5,
The method for inspecting a cylindrical member, wherein the imaging step includes a step of relatively moving the imaging means along the joint inside the cylindrical member, and a step of imaging the joint by the relatively moving imaging means .

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