JP6054250B2 - Inspection method and inspection apparatus for joining member - Google Patents

Description

  The present invention relates to a bonding member inspection method and an inspection apparatus for inspecting a bonding portion of a bonding member in which end portions are bonded to each other.

  A drum is used for molding the tire, and an annular tire constituent member (for example, a belt or a carcass), which is a joining member whose ends are joined to each other, is molded by the drum. Moreover, the joining part of the edge parts of a joining member is test | inspected in the outer periphery of a drum, and the pass / fail of a joining part is determined. With regard to this joint inspection method, conventionally, there is known an inspection method for inspecting a joint based on a displacement signal over the entire circumference of a drum acquired by a displacement sensor (see Patent Document 1).

  In the inspection method described in Patent Document 1, a displacement signal related to the sheet thickness is acquired while rotating the drum at a constant speed, and waveform data about the sheet thickness is generated from the displacement signal. Subsequently, the size of the convex region or the concave region of the waveform data is calculated, and the quality of the joint is determined. However, with this conventional inspection method, it is difficult to inspect the properties of the joint portion on the side portion of the sheet, and the joint portion cannot be inspected in detail at a specific location in the circumferential direction of the sheet.

  On the other hand, conventionally, when the joined portion of the joining member is moved to the inspection position by the rotation of the drum, the joined portion is imaged and inspected. Based on the captured image, the displacement amount of the joined end portions, the overlapping width of the end portions, the opening width of the end portions, and the like are detected, and the joined portion is inspected. At this time, since the joining member is also curved corresponding to the curvature of the outer periphery of the drum, the manner in which the joining member is imaged changes within the imaging region. In addition, the conditions of the inspection apparatus (imaging means, light source, etc.) are set so that the joint is best imaged at a predetermined inspection position (for example, the center position) in the imaging area, and the focus of the imaging means is the inspection position. It is adjusted according to. The light from the light source is also adjusted in accordance with the inspection position, and the way the light strikes within the imaging area changes. Therefore, in order to image the joint part under optimum conditions, it is desirable to image the joint part when the joint part moves to the inspection position in the imaging region.

  However, since the size and shape of the end portion of the joining member varies within an allowable range, the position of the joining portion may vary. In particular, in the joining member for the belt, the edge of the end portion is inclined with respect to the drum circumferential direction, and the position of the joining portion is likely to vary in the drum circumferential direction at the side portion in the drum width direction. As the position of the joint portion varies, the joint portion may be imaged out of the inspection position when the joint portion is imaged. In this case, there is a possibility that the inspection accuracy of the joint portion may be affected. Therefore, it is difficult to inspect the joint portion repeatedly and stably at the inspection position.

JP 2004-354258 A

  The present invention has been made in view of the above-described conventional problems, and its purpose is to cope with fluctuations in the position of the joining portion when inspecting the joining portion between the end portions of the joining member joined on the outer periphery of the drum. Thus, the joint is inspected stably and accurately at the inspection position.

The present invention relates to a method for inspecting a joining member for inspecting a joining portion of joining members joined at the outer periphery of a drum by moving the joining portion to an inspection position by rotation of the drum, and the end of the joining member before joining. Acquiring the size and shape of the part, correcting the position of the joint to be inspected on the outer periphery of the drum based on the acquired size and shape of the end, and inspecting the correction position of the joint by rotating the drum And a step of inspecting a joint when moved to a position.
Further, the present invention is a joining member inspection apparatus for inspecting a joining portion of joining members joined at the outer periphery of a drum by moving the joining portion to an inspection position by rotation of the drum, and before joining. An acquisition means for acquiring the size and shape of the end of the drum, a correction means for correcting the position of the joint to be inspected on the outer periphery of the drum based on the size and shape of the end acquired by the acquisition means, and rotation of the drum And an inspection unit that inspects the joint when the correction position of the joint moves to the inspection position.

  According to the present invention, when inspecting the joint portion between the end portions of the joining members joined at the outer periphery of the drum, the joint portion is stably and accurately detected at the inspection position in response to the variation in the position of the joint portion. Can be inspected.

It is a figure which shows the inspection apparatus of the joining member of this embodiment. It is a flowchart which shows the procedure of the test | inspection process of a joining member. It is a figure which shows the captured image of the edge part of a joining member. It is a figure for demonstrating correction | amendment of the position of a junction part. It is a top view which shows the junction part of a joining member.

Hereinafter, an embodiment of an inspection method and an inspection apparatus for a joining member according to the present invention will be described with reference to the drawings. The joining member is a member to which the end portions are joined, and is disposed on the outer periphery of the drum.
This embodiment demonstrates the example which test | inspects a joining member at the time of shaping | molding of a tire. Therefore, the drum is a molding drum for molding a tire or a tire constituent member, and the joining member inspection device is installed in the tire molding device and used in the tire molding process.

  When molding the annular joining member, the ends of the joining member are joined on the outer periphery of the drum. At the time of this molding, a plurality of joining members are joined side by side on the outer periphery of the drum, or one joining member is wound around and joined to the drum. Moreover, a joining member is a sheet-like tire structural member (seat member), and the edge part of a joining member is piled up (or abutted) and joined. Here, one belt-like joining member is wound around the drum once and the ends of the joining member are overlapped and joined. Thus, a tire belt is formed.

FIG. 1 is a diagram showing an inspection apparatus 1 for a joining member S according to the present embodiment, and shows a schematic configuration of the inspection apparatus 1. FIG. 1 also shows a main part of the tire molding apparatus 10.
As illustrated, the tire molding apparatus 10 includes a supply device 11 that supplies a joining member S (member to be joined) before joining, a rotatable cylindrical drum 12, and a molding control device 13. The supply device 11 includes a transport device 11A (here, a conveyor) that transports the joining member S, and transports the joining member S in the longitudinal direction. The drum 12 is rotated at a predetermined speed (arrow R) by a rotating means (not shown) having a motor or the like, and stopped in a state of being rotated by a predetermined rotation angle. The molding control device 13 includes a PLC (programmable logic controller) and controls the entire tire molding device 10. The supply device 11 and the drum 12 operate under the control of the molding control device 13.

  At the time of molding the joining member S, the joining member S is supplied to the drum 12 by the supply device 11, and the front end S1 of the joining member S is arranged on the outer periphery of the drum 12 by an arrangement means (not shown). In this state, the joining member S is supplied while rotating the drum 12, and the joining member S is wound around the outer periphery of the drum 12. Subsequently, the rear end S2 of the joining member S is disposed on the outer periphery of the drum 12 by the disposing means and is pressed against the front end S1. Thereby, edge part S1, S2 of the joining member S is joined by the outer periphery of the drum 12, and the cyclic | annular joining member S is shape | molded. At that time, the molding control device 13 detects the rotation angle of the drum 12 by a rotation angle detection means (not shown), and controls the rotation and rotation angle of the drum 12. Further, the joining portion S3 between the end portions S1 and S2 of the joining member S moves to a predetermined inspection position K by the rotation of the drum 12, and is inspected on the outer periphery of the drum 12 by the inspection device 1.

  The inspection device 1 includes an acquisition unit 2 disposed above the supply device 11, an inspection unit 3 disposed on the outer side in the radial direction of the drum 12, and an inspection control device 20. Before the joining member S is joined, the inspection apparatus 1 captures one or both of the end portions S1 and S2 by the obtaining unit 2, and obtains their dimensions and shape. Further, the inspection apparatus 1 inspects the joint portion S3 of the joint member S at the inspection position K by the inspection portion 3. Here, the acquisition unit 2 images one end (front end) S1 and acquires an image of the one end S1. The acquisition unit 2 includes imaging means (for example, a CCD camera, an imaging sensor, and a digital camera) that images the end S1, and is disposed toward the joining member S supplied by the supply device 11. The acquisition unit 2 captures an image of the end S1 when the joining member S is supplied, and acquires an entire image of the end S1. The captured image of the end S1 is converted into an electrical signal (image data) by the acquisition unit 2 and transmitted to the inspection control device 20.

  The inspection unit 3 includes an image pickup unit (for example, a CCD camera, an image sensor, or a digital camera) that images the bonding portion S3 of the bonding member S, and is disposed at the inspection position K of the bonding portion S3. The inspection position K is a position for inspecting the joint portion S3 set in advance, and is set at a predetermined position in the drum circumferential direction. The inspection unit 3 captures an image of the whole or part (here, part) of the joint S3 at the inspection position K, and acquires an image of the joint S3. The captured image of the joint portion S3 is converted into an electrical signal (image data) by the inspection unit 3 and transmitted to the inspection control device 20.

  The inspection control device 20 includes a computer having a microprocessor and various storage devices (ROM, RAM, etc.) (not shown), and executes various processes based on a program stored in advance. The acquisition unit 2, the inspection unit 3, and the molding control device 13 are connected to the communication unit 21 of the inspection control device 20. The inspection control device 20 communicates with the acquisition unit 2, the inspection unit 3, and the molding control device 13 through the communication unit 21 to transmit (or receive) data and signals. Thereby, the inspection control apparatus 20 acquires the captured images of the acquisition unit 2 and the inspection unit 3 and stores the captured images in the storage unit 22. In addition, the user presets conditions and criteria related to the inspection in the inspection control device 20 by the input unit 23, and the set data is stored in the storage unit 22.

  The molding control device 13 transmits a predetermined signal to the inspection control device 20 at the time of imaging of the end portion S1 on the supply device 11 and the inspection of the joint portion S3 on the drum 12, and the inspection control device 20 controls the molding control. Acts on the signal received from the device 13. Thereby, the inspection control device 20 performs imaging of the end portion S1 and inspection of the joint portion S3. The inspection control apparatus 20 includes a control unit 24, an acquisition processing unit 30, a correction unit 40, and an inspection processing unit 50, and the inspection processing is executed by these units (each unit) 24, 30, 40, 50. The control unit 24 controls the entire inspection apparatus 1 and controls the acquisition unit 2 and the inspection unit 3 via the communication unit 21.

  The acquisition processing unit 30 includes an end determination unit 31, a size detection unit 32, and an angle detection unit 33, and performs image processing on the captured image of the end S1 captured by the acquisition unit 2 to obtain the end S1. Get dimensions and shape. Therefore, the acquisition processing unit 30 and the acquisition unit 2 constitute an acquisition unit that acquires the size and shape of the end portion S1 of the bonding member S before bonding. At the time of acquisition, the end determination unit 31 determines the end S1 from the captured image of the end S1. Further, based on the captured image of the end portion S1, the dimension detection unit 32 detects the size of the end portion S1, and the angle detection unit 33 detects the angle of the edge of the end portion S1. The acquisition processing unit 30 acquires the inclined shape of the end portion S1 by detecting the angle of the edge of the end portion S1.

  The correction unit 40 is a correction unit that corrects the position of the joint S <b> 3, and includes a position determination unit 41, a position comparison unit 42, and a calculation unit 43. When the bonding member S is inspected, the correction unit 40 corrects the position of the bonding portion S3 to be inspected on the outer periphery of the drum 12 based on the size and shape of the end S1 acquired by the acquisition unit. At that time, the position to be inspected by the joint S3 is corrected by the correction unit 40 in accordance with the actual position (actual position) of the joint S3 with respect to the preset reference position of the joint S3. At the time of this correction, the position determination unit 41 determines the actual position of the joint portion S3, and the position comparison unit 42 compares the actual position determined by the position determination unit 41 with the reference position. Moreover, the calculation part 43 performs the calculation process for correct | amending the position of joining part S3.

  When the corrected position (corrected position) of the joining portion S3 is moved to the inspection position K due to the rotation of the drum 12, the inspection portion 3 is controlled by the control portion 24 to image the joining portion S3 of the joining member S. To do. The inspection processing unit 50 performs image processing on a captured image of the joint S3 captured by the inspection unit 3 and executes an inspection process for the joint S3. Therefore, the inspection control device 20 having the control unit 24 and the inspection processing unit 50, together with the inspection unit 3, inspects the joint S3 when the correction position of the joint S3 is moved to the inspection position K by the rotation of the drum 12. Configure the means. The inspection unit includes the inspection unit 3 that is an imaging unit, and when the correction position of the joint S3 moves to the inspection position K, the inspection unit 3 images and inspects the joint S3.

  The inspection processing unit 50 includes a joint determination unit 51, a joint state detection unit 52, and a determination unit 53. During the inspection of the joint S3, the joint determination unit 51 determines the joint S3 from the captured image of the joint S3. Further, based on the captured image of the joint portion S3, the joint state detection unit 52 detects the state of the joint portion S3 (here, the shift amounts of the end portions S1 and S2 in the joint portion S3, the overlapping width, and the opening width). . Based on the state of the joint part S3 detected by the joint state detection part 52 and a preset determination condition (determination criteria), the determination part 53 determines whether or not the joint part S3 is acceptable. Specifically, when the detection value (detection value of displacement, overlap width, opening width) by the joining state detection unit 52 satisfies the acceptance condition, the determination unit 53 determines that the joint S3 is acceptable and the detection value. Does not satisfy the pass condition, it is determined that the joint S3 is rejected. At that time, for example, when the detected value is within the allowable range, the joint S3 is determined to be acceptable, and when the detected value is outside the allowable range, the joint S3 is determined to be unacceptable.

  The inspection control apparatus 20 has a plurality of means for executing the above-described processes as function realizing means, and performs processing and control for inspection by each means. Further, when the determination unit 53 determines that the joint portion S3 is unacceptable, the inspection control device 20 notifies the determination result of the joint portion S3. For example, the inspection control device 20 displays a determination result, a reason for failure, or a work instruction corresponding to the determination result on a display unit (not shown). On the other hand, an alarm device (not shown) may issue an alarm in response to an alarm instruction transmitted from the inspection control device 20. The determination result may be transmitted from the inspection control device 20 to the molding control device 13 so that the tire molding device 10 performs an operation when it fails.

Next, a process and procedure when inspecting the joining member S will be described.
FIG. 2 is a flowchart showing the procedure of the inspection process for the joining member S.
As shown in the figure, first, the joining member S is prepared on the supply device 11 (the transport device 11A) (S101), and the end S1 of the joining member S is arranged at the imaging position by the acquisition unit 2. Subsequently, the molding control device 13 transmits an imaging trigger for the end portion S1 (for example, an imaging instruction for the end portion S1 or a notification that the end portion S1 is disposed at the imaging position) to the inspection control device 20. . When receiving the imaging trigger, the inspection control device 20 images the end portion S1 by the acquisition unit 2 (S102), and the acquisition processing unit 30 detects the joining member S before joining based on the captured image of the end portion S1. The size and shape of the end S1 are acquired (S103).

FIG. 3 is a diagram illustrating a captured image of the end portion S1 of the joining member S.
As illustrated, the end S1 of the joining member S is formed to be inclined with respect to the longitudinal direction of the joining member S corresponding to the drum circumferential direction P. As a result, the edge (edge) S4 of the end S1 is inclined at a predetermined angle with respect to the drum circumferential direction P, and the end S1 is inclined. Further, in the width direction of the joining member S corresponding to the drum width direction H, the dimension of the end S1 (the dimension of the part excluding the inclined part) (here, the width of the end S1) is a predetermined dimension. When acquiring the dimension and shape of the end S1, the dimension detection unit 32 detects the dimension W of the end S1 in the drum width direction H, and the angle detection unit 33 detects the edge S4 of the end S1 with respect to the drum circumferential direction P. Is detected. Thereby, the acquisition processing unit 30 (acquisition means) acquires the dimension W of the end S1 and the angle θ of the edge S4, and acquires the size and shape of the end S1 necessary for correcting the position of the joint S3. . The angle θ of the edge S4 is an angle at the corner S5 that forms an obtuse angle of the end S1, and is an acute angle.

  Subsequently, based on the size and shape of the end S1 acquired by the acquisition means (here, the dimension W of the end S1 and the angle θ of the edge S4), the correcting unit 40 (see FIGS. 1 and 2), the drum The position of the joint S3 to be inspected on the outer periphery of 12 is corrected (S104). Based on this correction result, when the joint S3 is inspected, the actual position of the joint S3 is adjusted according to the inspection position K to accurately image the joint S3. Further, when correcting the position of the joint S3, the position determination unit 41 determines the actual position of the joint S3 to be inspected on the outer periphery of the drum 12, and the position comparison unit 42 determines the actual position and the reference position of the joint S3. Compare When the actual position deviates from the reference position based on the comparison result by the position comparison unit 42, the correction unit 40 calculates the correction value of the actual position with respect to the reference position by the calculation unit 43.

FIG. 4 is a diagram for explaining the correction of the position of the joining portion S3. The actual end portion S1 (shown by a solid line) of the joining member S and a preset reference end portion S1 (reference end portion M). ) (Indicated by a dotted line). 4A shows an end S1 having a dimension W larger than the reference dimension WO, and FIG. 4B shows an end S1 having a dimension W smaller than the reference dimension WO. The reference dimension WO is a dimension of the reference end portion M in the drum width direction H.
Here, as illustrated, the position determination unit 41 determines the apex of the corner portion S5 of the end portion S1 as the actual position T of the joint portion S3. Accordingly, the reference position TO of the joint portion S3 is set at the apex of the corner portion M5 of the reference end portion M corresponding to the actual position T. The position comparison unit 42 compares the actual position T with the reference position TO.

  When the actual position T of the joint S3 is deviated from the reference position TO, the calculation unit 43 calculates a difference E between the dimension W of the end S1 and the reference dimension WO. Next, the calculation unit 43 calculates a distance (correction distance) F in the drum circumferential direction P between the reference position TO of the joint S3 to be inspected on the outer periphery of the drum 12 and the actual position T of the joint S3. The correction distance F is calculated by a predetermined relational expression (F = E / tan θ). Next, the calculation unit 43 calculates a correction angle Q for correcting the rotation angle of the drum 12 when the correction position (actual position T) of the joint S3 is moved to the inspection position K based on the correction distance F. The correction angle Q is calculated by the calculation unit 43 by calculating the rotation angle of the drum 12 corresponding to the correction distance F. The correction unit 40 corrects the rotation angle of the drum 12 by the correction angle Q and corrects the position of the joint S3 to be inspected on the outer periphery of the drum 12.

  After calculating the correction angle Q, the calculation unit 43 calculates the rotation angle (inspection angle) of the drum 12 at which the actual position T of the joint S3 moves to the inspection position K on the outer periphery of the drum 12 based on the correction angle Q. . The inspection angle is calculated by correcting the reference rotation angle of the drum 12 with the correction angle Q. The reference rotation angle is the rotation angle of the drum 12 when the reference position TO of the joint S3 moves to the inspection position K. When the joining member S is disposed on the drum 12, the reference position TO of the joining portion S3 moves to the inspection position K when the drum 12 rotates by a reference rotation angle from a predetermined state (or rotation start).

  On the other hand, when the drum 12 is rotated by a correction angle Q larger (or smaller) than the reference rotation angle, the actual position T of the joint S3 moves to the inspection position K. When the dimension W of the end S1 is larger than the reference dimension WO (see FIG. 4A), the actual position T moves to the inspection position K by rotating the drum 12 more than the reference rotation angle. Accordingly, the correction angle Q is a positive value. When the dimension W of the end S1 is smaller than the reference dimension WO (see FIG. 4B), the actual position T moves to the inspection position K by rotating the drum 12 smaller than the reference rotation angle. Therefore, the correction angle Q is a negative value. After calculating the correction angle Q, the calculation unit 43 calculates the inspection angle of the drum 12 from the reference rotation angle and the correction angle Q.

  Thus, the correction unit 40 (correction unit) includes a plurality of calculation units that perform calculation processing when correcting the position of the joint S3. The correction unit 40 includes at least a first calculation unit that calculates the correction distance F and a second calculation unit that calculates the correction angle Q. The first calculation means determines the size of the joint S3 to be inspected on the outer periphery of the drum 12 based on the size and shape of the end S1 acquired by the acquisition means (here, the dimension W of the end S1 and the angle θ of the edge S4). A distance (correction distance) F in the drum circumferential direction P between the reference position TO and the actual position T of the joint S3 is calculated. The second calculation means corrects the rotation angle of the drum 12 when the correction position of the joint S3 is moved to the inspection position K based on the correction distance F between the reference position TO and the actual position T calculated by the first calculation means. The correction angle Q to be calculated is calculated.

  After correcting the position of the joint S <b> 3 by the calculation of each calculation means, the inspection control device 20 transmits the inspection angle of the drum 12 to the molding control device 13. Next, the tire molding device 10 is controlled by the molding control device 13 to execute the joining operation of the joining member S. Note that the correction distance F calculated by the correction unit 40 may be transmitted to the molding control device 13, and the correction angle Q and the inspection angle of the drum 12 may be calculated by the molding control device 13. Alternatively, the correction angle Q calculated by the correction unit 40 may be transmitted to the molding control device 13, and the molding control device 13 may calculate the inspection angle of the drum 12.

  When the joining member S is joined (see FIGS. 1 and 2), first, the joining member S is supplied toward the drum 12 by the supply device 11, and the joining member S is disposed on the outer periphery of the drum 12. Further, while rotating the drum 12, the joining member S is wound around the drum 12, and the end portions S1 and S2 of the joining member S are joined together on the outer periphery of the drum 12 (S105). Subsequently, when the correction position of the joint portion S3 is moved to the inspection position K by the rotation of the drum 12, the inspection device 1 images and inspects the joint portion S3. Specifically, when the drum 12 is rotated by an inspection angle from a predetermined state (or rotation start), the molding control device 13 causes the imaging trigger of the joining portion S3 (for example, the imaging instruction of the joining portion S3, the drum 12 The rotation angle or notification that the drum 12 has been rotated by the inspection angle) is transmitted to the inspection control device 20. When receiving the imaging trigger, the inspection control device 20 images the joint S3 at the inspection position K by the inspection unit 3 (S106), and based on the captured image of the joint S3, the inspection processing unit 50 performs the joint S3. Is inspected (S107). At that time, the joint S3 is imaged and inspected without stopping the rotation of the drum 12. Note that after the rotation of the drum 12 is stopped, the joint portion S3 may be imaged and inspected.

FIG. 5 is a plan view showing the joining portion S3 of the joining member S, and shows the joining member S viewed from the outside in the drum radial direction.
As shown in the figure, in this embodiment, the area (imaging area G) imaged by the inspection unit 3 is set to the side portions (side portions in the drum width direction H) of the end portions S1 and S2, and the actual position. A side portion of the joint S3 including T is imaged by the inspection unit 3. Further, the inspection position K of the joint S3 is set to a predetermined position in the imaging region G (here, the center position in the drum circumferential direction P). The inspection unit 3 that is an imaging unit images the joint S3 when the correction position of the joint S3 moves to the inspection position K in the imaging region G. Subsequently, the inspection processing unit 50 inspects the joint portion S3 based on the captured image of the joint portion S3 imaged by the inspection portion 3, and determines whether the joint portion S3 is acceptable.

  In a state where the actual position T of the joint portion S3 is located at the inspection position K, a part of the joint portion S3 is imaged. At the same time, the ends S1 and S2 on both sides of the joint S3 are imaged. At that time, the positions of the side portions of the end portions S1 and S2 change in the captured image in accordance with the dimension W of the end portion S1. However, the side portions of the end portions S1 and S2 are imaged around the actual position T of the joint portion S3. The inspection processing unit 50 inspects the joint portion S3 as described above based on the captured images of the end portions S1 and S2 including the joint portion S3. Specifically, for example, the joining state detection unit 52 obtains the average positions of the side portions of the end portions S1 and S2 on both sides of the joining portion S3 based on captured images in a predetermined range. Thereby, even when there is a minute change in the position or shape of the side portion, the position of the side portion is obtained. Next, the difference between the average positions of the side portions of the end portions S1 and S2 is calculated, and the shift amounts of the end portions S1 and S2 in the joint portion S3 are detected. When the amount of deviation is within the allowable range, the determination unit 53 determines that the bonding portion S3 is acceptable, and when the amount of deviation is outside the allowable range, the bonding portion S3 is determined to be unacceptable.

  As described above, according to the present embodiment, the joining portion S3 can be stably and accurately measured at the inspection position K in accordance with the change in the position of the joining portion S3 of the joining member S without moving the inspection portion 3. Can be inspected well. Further, the inspection timing can be automatically adjusted to accurately inspect the joint S3 at the inspection position K. Since it is possible to prevent a shift between the position of the joint S3 and the inspection position K, it is possible to suppress the occurrence of an inspection error due to the position shift. As a result, since the stop of the tire molding apparatus 10 due to an inspection error is suppressed, the productivity of tire molding can be improved.

  Since the joint portion S3 can be reliably imaged at the inspection position K in the imaging region G, the joint portion S3 can be imaged under optimum conditions, and the joint portion S3 can be inspected with high accuracy based on the captured image. Since the correction angle Q for correcting the rotation angle of the drum 12 is calculated based on the calculation result of the correction distance F of the joint S3, the position of the joint S3 can be corrected easily and accurately. Further, since the dimension W of the end S1 and the angle θ of the edge S4 can be obtained relatively easily, the inspection process for the end S3 can be simplified.

  In the present embodiment, the dimension W of the end portion S1 and the angle θ of the edge S4 are acquired. However, for the end portion S1, a value necessary for correcting the position of the joint portion S3 may be acquired. That is, the dimension of the end S1 other than the dimension W may be acquired, or a value other than the angle θ related to the shape of the end S1 may be acquired. Further, the size and shape of both end portions S1 and S2 of the joining member S may be acquired, and the position of the joining portion S3 may be corrected based on the size and shape of both end portions S1 and S2. When the annular joining member S composed of the plurality of joining members S is molded, the plurality of joining portions S3 are inspected in order at the inspection position K.

  The present invention is not limited to the inspection method and the inspection apparatus for imaging and inspecting the joint portion S3, and can be applied to various inspection methods and inspection apparatuses for inspecting the joint portion S3 at the inspection position K. For example, when the joint portion S3 moves to the inspection position K, the joint portion S3 may be inspected using various sensors.

  DESCRIPTION OF SYMBOLS 1 ... Inspection apparatus, 2 ... Acquisition part, 3 ... Inspection part, 10 ... Tire molding apparatus, 11 ... Supply apparatus, 12 ... Drum, 13 ... Molding control apparatus, DESCRIPTION OF SYMBOLS 20 ... Inspection control apparatus, 21 ... Communication part, 22 ... Memory | storage part, 23 ... Input part, 24 ... Control part, 30 ... Acquisition process part, 31 ... End part Discriminating unit 32 ... Dimension detecting unit 33 ... Angle detecting unit 40 ... Correction unit 41 ... Position discriminating unit 42 ... Position comparing unit 43 ... Calculating unit 50・ ・ ・ Inspection processing unit, 51 ... Joint part determination part, 52 ... Joint state detection part, 53 ... Determination part, K ... Inspection position, S ... Joint member, S3 ... Junction.

Claims (8)

A joining member inspection method for inspecting a joining portion of joining members joined on an outer periphery of a drum by moving the joining portion to an inspection position by rotating the drum,
Obtaining the dimensions and shape of the end of the joining member before joining;
Correcting the position of the joint to be inspected on the outer periphery of the drum based on the acquired dimensions and shape of the end,
A step of inspecting the joint when the correction position of the joint is moved to the inspection position by rotation of the drum;
The inspection method of the joining member which has this. In the inspection method of the joining member according to claim 1,
A method for inspecting a joining member, wherein the step of inspecting the joint portion includes a step of imaging the joint portion when the correction position of the joint portion moves to the inspection position in the imaging region. In the inspection method of the joining member according to claim 1 or 2,
The method for inspecting a joining member, wherein the step of acquiring the size and shape of the end is a step of acquiring the size of the end in the drum width direction and the angle of the edge of the end with respect to the drum circumferential direction. In the inspection method of the joining member according to any one of claims 1 to 3,
The step of correcting the position of the joint portion calculates the distance in the drum circumferential direction between the reference position of the joint portion to be inspected on the outer periphery of the drum and the actual position of the joint portion based on the acquired size and shape of the end portion. And a step of calculating a correction angle for correcting the rotation angle of the drum when the correction position of the joint is moved to the inspection position based on the calculated distance between the reference position and the actual position. . A joining member inspection device that inspects the joining portion of the joining members joined at the outer periphery of the drum by moving the joining portion to the inspection position by rotating the drum,
Obtaining means for obtaining the dimensions and shape of the end of the joining member before joining;
Correction means for correcting the position of the joint to be inspected on the outer periphery of the drum based on the size and shape of the end acquired by the acquisition means;
Inspection means for inspecting the joint when the correction position of the joint is moved to the inspection position by rotation of the drum;
The inspection apparatus of the joining member provided with. In the inspection apparatus of the joining member according to claim 5,
An inspection apparatus for a joining member having an imaging means for imaging the joint when the inspection means moves to the inspection position within the imaging region when the correction position of the joint is moved. In the inspection apparatus of the joining member described in Claim 5 or 6,
An inspection apparatus for a joining member, wherein the acquisition means acquires the dimension of the end in the drum width direction and the angle of the edge of the end with respect to the drum circumferential direction. In the inspection apparatus of the joining member according to any one of claims 5 to 7,
First correcting means for calculating the distance in the drum circumferential direction between the reference position of the joint to be inspected on the outer periphery of the drum and the actual position of the joint based on the size and shape of the end acquired by the acquiring means. And a second calculating means for calculating a correction angle for correcting the rotation angle of the drum when the correction position of the joint is moved to the inspection position based on the distance between the reference position and the actual position calculated by the first calculating means. The inspection apparatus of the joining member which has these.

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