WO2010047197A1

WO2010047197A1 - Tire testing device and tire testing method

Info

Publication number: WO2010047197A1
Application number: PCT/JP2009/066094
Authority: WO
Inventors: 将雄村上
Original assignee: 株式会社神戸製鋼所
Priority date: 2008-10-23
Filing date: 2009-09-15
Publication date: 2010-04-29
Also published as: JP5058940B2; JP2010101725A; TW201016488A

Abstract

A rationalized tire testing device capable of efficiently testing a tire for multiple test items. A tire testing device (1) is provided with a first tire conveying means (2A) and a second tire conveying means (2B) which convey tires (T) to be tested, a first spindle shaft (3A) and a second spindle shaft (3B) which are provided to the respective tire conveying means (2A, 2B) and rotatably support the tires (T), a rotating drum (4) which can, by reciprocating between the spindle shafts (3A, 3B), make contact with any of the tires (T) mounted to the spindle shafts, a uniformity measuring section which measures the uniformity of the tire (T), among the tires (T) mounted to both the spindle shafts, with which the drum (4) is in contact, and a dynamic balance measuring section which measures the dynamic balance of the tire (T) with which the drum (4) is not in contact.

Description

Tire inspection apparatus and tire inspection method

The present invention relates to a tire inspection apparatus and a tire inspection method capable of performing product inspection on a plurality of items such as uniformity, dynamic balance, or outer shape with the same apparatus.

Conventionally, a product inspection is performed on a plurality of items such as uniformity (uniformity), dynamic balance (dynamic balance), and external shape measurement for tires that have risen in product. Inspecting these items efficiently and in a short time is important in order to increase tire production efficiency. Therefore, various tire inspection devices have been developed with the aim of increasing the efficiency of the inspection.

For example, Patent Document 1 includes two conveying means, two spindle shafts provided on the conveying path, and a rotating drum provided so as to be reciprocally movable between the two spindle shafts. There is known a device that has been rationalized. In these tire inspection devices, it is possible to carry out and carry in the tire with respect to the other spindle shaft while measuring the uniformity with one of the two spindle shafts. However, it is possible to efficiently perform the uniformity inspection by omitting the time taken to carry out and carry in the tire.

However, even with these tire inspection devices, there is a problem that the tire inspection efficiency cannot be increased very much. Specifically, the distance between both spindle shafts is determined based on the maximum outer diameter of the tire and is much larger than the distance that the rotating drum has to move in a conventional tire inspection apparatus. It takes a long time to reach from the spindle axis to the other spindle axis. This causes a state in which the rotating drum is waiting for the rotating drum to arrive at the spindle shaft even though the rotating drum is constantly performing tasks such as loading and moving. Therefore, although two spindle shafts are provided for one rotating drum, the tire inspection efficiency is not improved so much.

Japanese Patent Laid-Open No. 10-54781

The present invention has been made in view of the above-described problems, and an object thereof is to provide a tire inspection apparatus and a tire inspection method capable of rationalizing the apparatus and efficiently performing tire inspection on a plurality of items. To do.

In order to achieve this object, a tire inspection apparatus according to the present invention includes a first tire conveyance unit and a second tire conveyance unit that convey a tire to be inspected, and the first tire conveyance unit and the second tire conveyance unit. The first spindle shaft and the second spindle shaft that are respectively provided on the transport path of the tire and rotatably support the tire, and reciprocally move between the first spindle shaft and the second spindle shaft so that both spindle shafts can be moved. Of the rotating drum capable of coming into contact with either of the attached tires and the tire attached to the first spindle shaft and the second spindle shaft, the uniformity of the tire in contact with the rotating drum is measured. And a dynamic balun for measuring a dynamic balance of a tire not in contact with the rotating drum Comprising a measuring unit.

Further, the tire inspection method according to the present invention provides a first tire conveying means and a second tire conveying means for conveying a tire, and supports the tire rotatably on a conveying path of each tire conveying means. A rotating drum is provided so that it can reciprocate between these spindle shafts and come into contact with a tire attached to each of the spindle shafts. Measuring the uniformity of a tire attached to one spindle shaft while contacting the tire attached to the spindle shaft, and until the rotating drum returns away from the one spindle shaft. Measuring the dynamic balance of the tire attached to one of the spindle shafts and changing the tire during

Alternatively, in the tire inspection method according to the present invention, a first tire transport unit and a second tire transport unit for transporting a tire are prepared, and the tire is rotatably supported on a transport path of each tire transport unit. A rotating drum is provided so that it can reciprocate between these spindle shafts and come into contact with a tire attached to each of the spindle shafts. Measuring the uniformity and outer shape of the tire attached to one spindle shaft while contacting the tire attached to the spindle shaft, and the rotating drum returns away from the one spindle shaft Until the outer shape of the tire attached to the other spindle shaft using the shape measuring device for measuring the outer shape. Measuring Jo may be one containing a city.

1 is a plan view of a tire inspection apparatus according to an embodiment of the present invention. It is a side view at the time of seeing the tire inspection device from the downstream side. It is sectional drawing which cut | disconnected the 1st spindle axis | shaft in the said tire inspection apparatus in the tire conveyance direction. (A) (b) is a front view which shows operation | movement of the shape measuring apparatus in the said tire inspection apparatus. (A) (b) is a rear view which shows operation | movement of the shape measuring apparatus in the said tire inspection apparatus. It is process drawing of the tire inspection method which concerns on embodiment of this invention. It is a front view of the shape measuring apparatus of the tire inspection apparatus which concerns on another embodiment of this invention.

DETAILED DESCRIPTION Embodiments for carrying out the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows a tire inspection apparatus 1 according to this embodiment. The tire inspection apparatus 1 is a combined inspection apparatus that can perform product inspection on a plurality of items such as uniformity, dynamic balance, or outer shape measurement of the tire T by itself.

The tire inspection apparatus 1 includes a first tire conveying means 2A and a second tire conveying means 2B, a first spindle shaft 3A and a second spindle shaft 3B, and a rotating drum 4. Each tire conveying means 2A, 2B conveys the tire T that is the object of inspection. There are tire inspection positions on the conveyance paths of these tire conveyance means 2A and 2B, respectively, and the first spindle shaft 3A is located at the tire inspection position of the first tire conveyance means 2A, and the tire inspection position of the second tire conveyance means 2B. The second spindle shaft 3B is provided respectively. The

spindle shafts

3A and 3B are arranged in an upright posture, and can support the tire T rotatably. The rotating drum 4 is provided between the first spindle shaft 3A and the second spindle shaft 3B, and reciprocally moves between the

spindle shafts

3A and 3B, whereby a tire T attached to each spindle shaft 3 is provided. Both can be contacted.

The tire inspection apparatus 1 further includes a uniformity measuring unit (not shown) for measuring the uniformity of the tire T, and the uniformity measuring unit is attached to the first spindle shaft 3A and the second spindle shaft 3B. The uniformity of the tire T with which the said rotating drum 4 is contacting among the tires T is measured. The rotating drum 4 is provided with a uniformity load measuring unit 5 that measures a load (multiple force) required for uniformity measurement, which is a load that the rotating drum 4 receives from the tire T, and the measured load value is the uniformity. It is designed to be given to the measurement unit.

In the following description, the left side of the paper surface of FIG. 1 is the upstream side, the right side of the paper surface is the downstream side, the upper side of the paper surface of FIG. 1 is the right side, the lower side of the paper surface is the left side, and the upper and lower sides of the paper surface of FIG. 1 is the top and bottom when explaining. These directions coincide with the directions when the operator views the tire inspection apparatus 1 from the downstream side.

As shown in FIGS. 1 and 2, the first tire conveying means 2A and the second tire conveying means 2B are configured so that the tire T extends from the upstream side to the downstream side of the

spindle shafts

3A and 3B and toward the downstream side, respectively. It conveys and is each arrange | positioned in the right side area | region and left side area | region of the tire inspection apparatus 1. FIG. These tire conveying means 2A, 2B have the same structure.

Each of the tire conveying means 2A, 2B includes a roller conveyor 6 provided on the upstream side and a downstream side, and a loading means for loading the tire T from the upstream roller conveyor 6 above the

spindle shafts

3A, 3B, respectively. 7 and a plurality of the tires T that move up and down between the positions where the tires can be carried in and out of the

spindle shafts

3A and 3B, respectively, and the positions where the tires can be placed on the

spindle shafts

3A and 3B. And a carry-out means 9 for carrying out the tire T from above the

spindle shafts

3A and 3B onto the roller conveyor 6 on the downstream side. That is, in each of the tire conveying means 2A, 2B, the tire T is conveyed from the roller conveyor 6 on the upstream side to above the

spindle shafts

3A, 3B, and the tire T is lowered from there to a tire inspection position set below, After the inspection is performed at the tire inspection position, the tire T is lifted from the tire inspection position and is carried out by the roller conveyor 6 on the downstream side.

The roller conveyor 6 on the upstream side has a bead bribrator (not shown) that applies a lubricant to the bead portion of the tire T to be inspected, and conveys the tire T to a position where the carrying means 7 can grip it. The roller conveyor 6 on the downstream side carries out the tire T that has been inspected to the downstream side. These roller conveyors 6 have a plurality of rollers arranged at substantially equal intervals in the front-rear direction, and these rollers are driven to rotate so that the tire T placed on each of the rollers is moved from the upstream side to the downstream side. Transport toward the side.

The roller conveyor 6 on the downstream side also has a plurality of rollers arranged at almost equal intervals in the front-rear direction. Of these rollers, the rollers closer to the

spindle shafts

3A and 3B are provided on the left and right sides with a gap on the center side in the left-right direction. It is a short one that is supported in a cantilevered manner. The gap allows the shape measuring apparatus 10 described later to move out without interfering with the rollers.

The carry-in means 7 carries the tire T from the upstream roller conveyor 6 to above the

spindle shafts

3A, 3B, and the carry-out means 9 carries the tire T from above the

spindle shafts

3A, 3B to the downstream roller conveyor 6. Unload. These carry-in means 7 and carry-out means 9 convey the tire T between the roller conveyor 6 and the

spindle shafts

3A and 3B while gripping the tire T.

As shown in FIG. 3, each of the

spindle shafts

3A and 3B is supported so as to be rotatable around an axis line in the vertical direction, and a rim 11 on which a tire T is detachably mounted is provided on the upper portion thereof. ing.

A spindle housing 12 that rotatably supports the

spindle shafts

3A and 3B is provided around the

spindle shafts

3A and 3B. These spindle housings 12 have a cylindrical shape that can accommodate the

spindle shafts

3A and 3B inside. A spindle bearing 13 is interposed between the inner peripheral surface of the spindle housing 12 and the

spindle shafts

3A and 3B, and holds the

spindle shafts

3A and 3B so as to be rotatable relative to the spindle housing 12. The rotational driving forces of the

rotary drive motors

15 and 15 are transmitted to the lower portions of the

spindle shafts

3A and 3B via

timing belts

14 and 14, respectively. A plate-like housing support member 16 extending in both the vertical direction and the left-right direction is formed on the outer peripheral surface of the spindle housing 12, and this housing support member 16 is supported by means such as a bolt (not shown) to be described later. A rigid body is fixed to the positioning member 18 of the base 17.

In this embodiment, four of the elevating members 8 are arranged on each of the

tire conveying means

2A and 2B. In each tire conveying means 2A, 2B, the elevating member 8 moves up and down between the

spindle shafts

3A, 3B and the rim 11 of the

spindle shafts

3A, 3B with the tire T placed thereon, The tire T is received from the carry-in means 7 and lowered to the rim 11 of the spindle shaft 3, and the tire T on the rim 11 is raised to a position where it can be delivered to the carry-out means 9.

As shown in FIG. 2, the rotating drum 4 includes the uniformity load measuring section 5, a drum section 19 formed in a cylindrical shape, a shaft section 21 that rotatably supports the drum section 19, and the shaft And a drum support 20 that supports the portion 21.

A road surface on which the tire T contacts the ground is formed on the outer peripheral surface of the drum portion 19. When the road surface and the tire T to be rotated are brought into contact with each other, a road surface frictional force is generated between them. The road surface frictional force rotates the drum portion 19 so that the drum portion 19 follows the tire T. Let

The shaft portion 21 protrudes upward and downward along the rotation axis from the drum portion 19, and supports the drum portion 19 so that the drum portion 19 can rotate around the shaft portion 21. To do.

The drum support 20 supports the upper end and the lower end of the shaft portion 21 via the uniformity measuring unit 5. Specifically, the drum support 20 includes a support column 20a extending in the vertical direction, and projecting

portions

20b and 20c protruding from the upper and lower portions of the support column 20a to the apparatus downstream side along the horizontal direction. The projecting

portions

20 b and 20 c support the upper and lower ends of the shaft portion 21 with the drum portion 19 interposed between the projecting

portions

20 b and 20 c.

On the other hand, a support base 17 is installed on the floor surface, and the bottom surface of the drum support 20 is placed on the upper surface of the support base 17 via a guide member 23. The guide member 23 extends along the left-right direction and supports the drum support 20 so that the drum support 20 can slide along the direction. The drum support 20 is driven in the left-right direction by driving means (not shown). As the guide member 23, for example, a linear motion guide composed of a guide rail and a slide guide can be applied, and a method of guiding the drum support 20 by sliding between sliding surfaces is applied. Also good.

The uniformity load measuring unit 5 is constituted by a load cell, is interposed between the drum unit 19 and the drum support 20 in the rotary drum 4, and is applied to at least the drum support 20 from the drum unit 19 in contact with the tire T. The force component (force component required for uniformity measurement) in the tire radial direction and the tire rotation axis direction is measured. The measurement value is input to the uniformity measurement unit (not shown), and the uniformity measurement unit calculates a uniformity measurement value based on the measurement value.

The rotating drum 4 moves in either the left or right direction, and is attached to a tire T attached to a spindle shaft of the destination (hereinafter, the destination spindle axis is referred to as a first spindle shaft 3A as an example). Contact. Then, when the first spindle shaft 3A as the moving destination is rotationally driven by the rotation drive motor 15, the tire T supported by the spindle shaft 3A also rotates, and the rotating drum 4 contacting the tire T is driven to rotate. To do. At this time, the force that the rotating drum 4 receives from the tire T is measured by the uniformity load measuring unit 5 of the rotating drum 4, and thereby the uniformity of the tire T is measured. Preferably, measurement of the outer shape of the tire T on the one spindle shaft side is performed in accordance with the measurement of the uniformity.

The tire inspection apparatus 1 further includes a dynamic balance load measuring unit 24 and the shape measuring apparatus 10 described above. These effectively use the time until the rotating drum 4 moves from the first spindle shaft 3A to the other spindle shaft, ie, the second spindle shaft 3B, and returns to the first spindle shaft 3A side again. Thus, replacement of the tire T on one spindle shaft 3 side and dynamic balance measurement, preferably measurement of the outer shape of the tire T on the other spindle shaft 3 side can be performed.

The dynamic balance load measuring unit 24 is provided between the housing support member 16 of the spindle housing 12 and the positioning member 18 of the support base 17. The dynamic balance load measuring unit 24 is two load cells (piezoelectric elements) that are vertically spaced apart from each other (surfaces of both housing support members 16 and 16) perpendicular to the left-right direction. When the tire T that is not in contact with the rotating drum 4 is rotated at a higher speed than during the uniformity measurement, the force component in the left-right direction applied to the support base 17 from the spindle housing 12 is measured. This measurement result is used for the evaluation of the dynamic balance associated with the shake during rotation of the tire T. A dynamic balance measurement unit (not shown) calculates a dynamic balance measurement value based on the force component measured by the dynamic balance load measurement unit 24.

As shown in FIGS. 4 and 5, the shape measuring apparatus 10 is provided on a foundation support 26 provided on the floor surface. The foundation support 26 is formed in a plate shape that is long in the left-right direction. A wide guide groove 27 is formed in the left-right direction on the upper surface of the base support base 26, and guide members 32 are provided along the front and rear edges of the guide groove 27. The guide member 32 includes a guide rail that extends in the left-right direction and is installed on the base support base 26 side, and a slide guide that can slide along the guide rail. The shape measuring device 10 is provided so as to be able to run in the left-right direction while being guided by the guide member 32.

The shape measuring device 10 includes a device base 28 including a slide guide of the guide member 32, a measuring unit 30 including a sensor 29 for measuring the outer shape of the tire T, and the measuring unit 30 is exposed to the device base 28. It has an exit / retreat means 31 for connecting the two so as to be freely retractable, and a moving means 33 for moving the device base 28 in the left-right direction along the guide member 32 on the basic support base 26.

The device base 28 has a horizontal plate-like lower portion 28a and a plate-like upper portion 28b that stands upright from the lower portion 28a. The slide guide (a part of the guide member 32) is fixed to the bottom surface of the lower portion 28a.

The upper part 28b of the apparatus base 28 is formed in a plate shape along the conveying direction of the tire T, and its upper end extends obliquely upward toward the upstream side. A guide rail 34 is provided so as to extend while being inclined from the upper end portion toward the lower end on the downstream side obliquely below.

The moving means 33 moves the device base 28 in either the left or right direction with respect to the base support base 26, extends in the left-right direction, and is a screw shaft provided rotatably on the base support base 26 side. 35, a screw shaft motor 36 for rotating the screw shaft 35 in both forward and reverse directions, and a nut-like member 37 provided on the apparatus base 28 side. The screw shaft 35 has an outer peripheral surface on which a male screw is formed, and both ends of the screw shaft 35 are rotatably attached to the foundation support table 26 via bearings 50. The nut-shaped member 37 is fixed to the front surface of the lower portion 28a of the apparatus base 28, and both are screwed together with the screw shaft 35 passing through the nut-shaped member 37. The screw shaft rotation motor 36 is provided at the left end portion of the foundation support base 26, and rotates the screw shaft 35 in either the forward or reverse rotation direction to thereby rotate the screw base 35 relative to the foundation support base 26. Move in the left or right direction.

The measuring unit 30 has a holding body 38, and the holding body 38 is movably connected to the apparatus base 28 by the retracting means 31. The holding body 38 is provided for each of the plurality of (three in the figure) sensors 29 for measuring the outer shape of the tire T, and for adjusting the position of the sensor 29 in the front-rear direction. A plurality of (three in the figure) expansion / contraction parts 39 and a plurality of (three in the figure) lifting / lowering provided for each expansion / contraction part 39 and individually adjusting the position of the expansion / contraction part 39 in the vertical direction Part 40.

The holding body 38 is formed in a plate shape extending in the vertical direction, and is provided on the side of the upper portion 28b of the apparatus base 28. The exit / retreat means 31 is provided on the left side of the holding body 38, and the plurality of sensors 29, the plurality of expansion / contraction parts 39 corresponding thereto, and the lifting / lowering part 40 corresponding thereto are provided on the right side. Two slide guides 43 are attached to the left side surface of the holding body 38, and these slide guides 43 are guided by guide rails 34 provided on the apparatus base 28. Therefore, the holding body 38 is guided so as to be relatively movable along the guide rail 34 (in the direction toward the front upper side).

Each of the sensors 29 measures the outer shape of the tire T in a non-contact manner. In the present embodiment, each sensor 29 is similar to a known laser displacement meter. These sensors 29 are provided on the right side of the holding body 38 while being spaced apart from each other in the vertical direction, and are arranged on the same vertical plane passing through the axis of the

spindle shafts

3A and 3B. Among these three sensors 29, the upper and lower two sensors 29 are provided at positions where the outer shape of the sidewall portion of the tire T can be measured, and the center sensor 29 in the vertical direction measures the outer shape of the tread portion of the tire T. It is provided at a position where it can be made.

Each of the expansion / contraction portions 39 is a member for adjusting the position of the sensor 29 corresponding thereto in the front-rear direction with respect to the tire T, and in this embodiment is configured by a linear actuator that expands and contracts in the front-rear direction. These extendable portions 39 are provided for each sensor 29 so that each sensor 29 can be moved individually. Each telescopic portion 39 has a main body 39b attached to the holding body 38 so that the intermediate portion can be moved up and down in a state where movement in the front and rear direction is restricted, and an operating shaft 39s that operates in the front and rear direction with respect to the main body 39b. The sensor 29 is attached to the tip of the operating shaft 39s.

Each of the elevating units 40 includes three elevating shafts 41 arranged along the vertical direction, and elevating motors 42 provided for the respective elevating shafts 41. Each of the elevating shafts 41 has an outer peripheral surface on which a male screw is formed, and is attached to the right side surface of the holding body 38 so as to be rotatable around a vertical axis. These elevating shafts 41 are arranged so as to be parallel to each other at intervals in the front-rear direction. The elevating motor 42 is connected to the lower end of each elevating shaft 41 and rotates the elevating shaft 41 in both forward and reverse directions.

A nut member 39a is fixed to an intermediate portion of the main body 39b of each expansion / contraction part 39, and both are screwed together in a state in which a lifting shaft 41 corresponding to the nut member 39a passes vertically. Therefore, when any one of the three lifting shafts 41 is rotationally driven, the telescopic portion 39 fixed to the nut member 39a that is screwed to the lifting shaft 41 moves up and down. As a result, the vertical distance between the sensors 29 is adjusted.

The exit / exit means 31 moves the measuring unit 30 up and down obliquely between the upstream upper position and the downstream lower position with respect to the apparatus base 28. The exit / retreat means 31 according to the present embodiment is composed of a linear actuator, and its lower end is fixed to the apparatus base 28 and its upper end is fixed to the holding body 38. By the expansion and contraction of the linear actuator (that is, the operation of the exit / retreat means 31), the measurement unit 30 can measure the outer shape of the tire T (the upstream position as shown in FIG. 4B). ) And a retracted position when the tire T is carried in or out (a position on the downstream side and the lower side as shown in FIG. 4A).

The shape measurement position is set at substantially the same height as the tire inspection position with a distance downstream from the tire inspection position. The retreat position is set to a height at which the measurement unit 30 does not interfere with the loading or unloading of the tire T, in other words, the upper end of the measurement unit 30 is not in contact with the tire T conveyed on the roller conveyor 6. In the present embodiment, the retracted position is a position where the measuring unit 30 is placed on the apparatus base 28, and the upper end of the measuring unit 30 at the retracted position interferes with the unloading means 9 and the tire T unloaded thereby. There is no fear.

Therefore, in the shape measuring apparatus 10 of the present invention, the measuring unit 30 is moved from the shape measuring position to a retracted position that does not interfere with the loading or unloading of the tire T, so that the shape measuring apparatus 10 does not interfere with the conveyance line of the tire T. Can be moved in the left-right direction. Further, as described above, if the retreat position is provided on the upper side or the lower side with respect to the shape measurement position of the shape measuring apparatus 10 and on the same side as the shape measurement position and the vertical direction with respect to the

tire conveying means

2A and 2B The distance from the shape measurement position and the uniformity measurement position of the tire T to the tire conveyance height provided with the carrying-in / out means can be shortened, and the tire T can be loaded into the

spindle shafts

3A and 3B. Time can be shortened. In addition, it is possible to prevent the movement stroke of the exit / exit means 31 from becoming long.

Next, an example of the tire inspection method of the present invention will be described with reference to FIG.

In the initial stage, as shown in FIGS. 6A and 6B, the tire T is already attached to the right first spindle shaft 3A so as to rotate integrally with the first spindle shaft 3A. The rotating drum 4 is in contact. Further, the moving means 33 moves the shape measuring device 10 so that the sensor 29 of the measuring unit 30 of the shape measuring device 10 is located on the downstream side of the first spindle shaft 3A. At this position, the exit / retreat means 31 moves the holding body 38 to the upper position on the upstream side of the apparatus base 28 with respect to the apparatus base 28 so as to approach the tire T. The three sensors 29 are positioned in the radial direction of the tire T by the stretchable parts 39 held by the holding body 38, and the vertical interval of the sensors 29 is adjusted by the elevating part 40. Thereby, advancement (movement) to the shape measurement position of the shape measuring apparatus 10 is completed.

From this initial state, as shown in FIG. 6c, the first spindle shaft 3A is rotated at a predetermined rotational speed (for example, 60 rpm as defined in JASO C60 7) in the normal rotation direction by the rotation drive motor 15. The rotary drum 4 that is driven and is in contact with the tire T attached to the first spindle shaft 3A is driven to rotate. The uniformity load measuring unit 5 provided in the rotating drum 4 measures the force component applied to the drum support 20 from the drum unit 19, and based on the measured value, the tire attached to the first spindle shaft 3A. The uniformity of normal rotation of T is evaluated.

Further, in the shape measuring apparatus 10, the outer shape of the rotating tire T is measured by the three sensors 29 simultaneously with the measurement of the uniformity. Since the measurement of the outer shape of the tire T is completed in a shorter time than the measurement of uniformity, the shape measuring apparatus 10 moves from the shape measurement position to the retracted position while the forward rotation uniformity is being measured. Start moving. The retraction of the shape measuring apparatus 10 is performed by each retractable part 39 retracting the sensor 29 corresponding thereto to the holding body 38 side, and the retracting means 31 retracting the holding body 38 to the retracted position.

As shown in FIG. 6d, when the measurement of the uniformity of forward rotation on the first spindle shaft 3A is completed, the rotation drive motor 15 now drives the first spindle shaft 3A to rotate in the reverse direction. Similar to the measurement of the forward rotation uniformity, the uniformity load measuring unit 5 measures the force component for measuring the reverse rotation uniformity in the tire T attached to the first spindle shaft 3A.

On the other hand, another tire T carried in by the carrying-in means 7 is fixed to the left second spindle shaft 3B so as to rotate integrally with the second spindle shaft 3B via the rim 11, and thereby the tire T Preparation for uniformity measurement is completed.

When the measurement of the uniformity of reverse rotation for the tire T attached to the first spindle shaft 3A is completed, the retraction of the shape measuring apparatus 10 to the retreat position is also completed. Then, the rotating drum 4 and the shape measuring device 10 start moving from the first spindle shaft 3A on the right side to the second spindle shaft 3B on the left side. However, it is difficult to move the rotating drum 4 which is heavier than the shape measuring apparatus 10 from the first spindle shaft 3A to the second spindle shaft 3B in a short time, and the tire T attached to the second spindle shaft 3B. A certain amount of time is required to enable the measurement of uniformity. Then, a corresponding time is required until the rotating drum 4 returns to the first spindle shaft 3A again.

Therefore, as shown in FIGS. 6e and 6f, in this embodiment, the measurement of the dynamic balance and the tire T replacement are continuously performed on the first spindle shaft 3A on the right side from which the rotary drum 4 is separated. This eliminates as much wasteful time waiting for the arrival of the rotating drum 4 as possible, and realizes high inspection efficiency that effectively uses the time until the rotating drum 4 returns.

On the other hand, the relatively lightweight shape measuring apparatus 10 can move from the first spindle shaft 3A to the second spindle shaft 3B in a shorter time than the time until the rotating drum 4 returns. Therefore, the reciprocation of the shape measuring device 10 between the left and

right spindle shafts

3A and 3B is individually performed by a driving means different from the rotating drum 4, and the shape measuring device 10 is moved from the retracted position in the reverse procedure to the retracted position. Preparation for measurement is performed by advancing to the measurement position. That is, the measurement preparation of the shape measuring apparatus 10 is performed by effectively using the remaining time until the rotating drum 4 reaches the second spindle shaft 3B, and the measurement of the uniformity and the outer shape are immediately performed in accordance with the arrival of the rotating drum 4. A shape measurement can be performed.

As shown in e of FIG. 6, the measurement of the dynamic balance with respect to the tire T attached to the first spindle shaft 3A is performed as follows. The rotation drive motor 15 rotates and drives the first spindle shaft 3A at a higher rotational speed than when measuring uniformity, and vibration (vibration) generated in the tire T during the rotation is provided between the spindle housing 12 and the support base 17. The dynamic balance load measuring unit 24 measures the force component. Based on this measured value, the dynamic balance of the tire T attached to the first spindle shaft 3A is evaluated. On the other hand, on the second spindle shaft 3B, the attachment of a new tire T has already been started, and after a while from the start of the measurement of the dynamic balance of the tire T attached to the first spindle shaft 3A, the new tire T is attached. The replacement is complete. Therefore, when the rotating drum 4 arrives at the second spindle shaft 3B as shown in FIG. 6f, the uniformity measurement and the outer shape measurement of the tire T already attached to the first spindle shaft 3A are already performed. The preparation is completed, and the uniformity measurement and the outer shape measurement attached to the second spindle shaft 3B can be started without waiting time.

Thus, in the tire inspection method according to this embodiment, while the rotary drum 4 is in contact with the tire T attached to one of the two spindle shafts (for example, the first spindle shaft 3A), The uniformity of the tire T attached to one spindle shaft is measured, and the dynamic balance of the tire T attached to the one spindle shaft is measured until the rotating drum 4 returns away from the one spindle shaft. Measurement and tire T replacement are performed. This reduces the time that the spindle shaft does not perform any operation until the rotating drum 4 returns, and the rotating drum 4 moves away from one spindle shaft and returns again. It makes it possible to efficiently inspect a plurality of items by effectively using time.

Further, as described above, since one shape measuring device 10 reciprocates between the two

spindle shafts

3A and 3B and is also used for measuring the outer shape of the tire T attached to both

spindle shafts

3A and 3B, a plurality of shape measuring devices 10 are used. There is no need to provide a shape measuring device. Therefore, even if an expensive two-dimensional inspection type device such as a geometry device is used as the shape measuring device, there is no possibility that the price of the entire device will rise.

The present invention is not limited to the above-described embodiments, and the shape, structure, material, combination, and the like of each member can be appropriately changed without changing the essence of the invention.

In the above-described embodiment, an example in which the dynamic balance measuring unit and the shape measuring device 10 are combined in addition to the uniformity measuring unit is illustrated, and the force component for measuring the uniformity of the tire T on the first spindle shaft 3A side by the rotating drum 4. Measurement of the force component for the measurement of the dynamic balance of the tire T on the second spindle shaft 3B side and the replacement of the tire T are performed during the measurement of the outer shape and the measurement of the outer shape. The tire inspection device and the tire inspection method are not limited to those having both the dynamic balance measurement unit and the shape measurement device. For example, the tire inspection device 1 may include only the uniformity measurement unit and the shape measurement device 10 without the dynamic balance measurement unit. In that case, for example, the uniformity and outer shape of the tire T attached to the first spindle shaft 3A are measured while the rotating drum 4 is in contact with the tire T attached to the first spindle shaft 3A. The other spindle shaft is measured by using the same shape measuring device 10 as that for measuring the uniformity of the tire T attached to the first spindle shaft 3A until 4 is separated and returned from the first spindle shaft 3A. The outer shape of the tire T attached to 3B may be measured. Also in this case, using one shape measuring device 10 for measuring the outer shape of the tire T attached to each of the two

spindle shafts

3A and 3B eliminates a rise in the price of the entire device, It is possible to efficiently carry out the inspection items of the two tires T called the measurement of uniformity with a single device. Alternatively, the tire inspection device 1 may include only the uniformity measurement unit and the dynamic balance measurement unit without the shape measurement device 10.

In the above-described embodiment, the measuring unit 30 of the shape measuring apparatus 10 is withdrawn and retracted obliquely from the retracted position to the front and upper shape measuring position by the retracting means 31, but from the floor surface of the tire conveying means 2A, 2B. 7 is large, the holding body 38 may be moved up and down in the vertical direction with respect to the upper part of the apparatus base 28 as shown in FIG.

Moreover, in the said embodiment, although the shape measuring apparatus 10 is provided in the floor surface lower than the tire conveyance means 2A, 2B downstream of the spindle shaft, the tire inspection position is set above the tire conveyance means 2A, 2B. In this case, the shape measuring device 10 can also be provided above the tire conveying means 2A, 2B. For example, a support frame fixed to the frame of the tire inspection apparatus 1 is provided above the

tire conveyance devices

2A and 2B, and the outer shape of the tire T provided on both

spindle shafts

3A and 3B is measured on the support frame. One shape measuring device may be supported.

In the present invention, the rotating drum 4 moves to the other spindle shaft side after the measurement of the uniformity of the tire T on one spindle shaft side, and again after the measurement of the uniformity of the tire T on the other spindle shaft side is completed. The control device of the tire inspection apparatus 1 may be configured to measure the dynamic balance on the one spindle shaft side in a state where the rotary drum 4 is separated before returning to the one spindle shaft side. it can.

In the present invention, the rotating drum 4 moves to the other spindle shaft side after the measurement of the uniformity and outer shape of the tire T on one spindle shaft side, and further, the uniformity and outer shape of the tire T on the other spindle shaft side. The control of the tire inspection apparatus 1 so as to measure the dynamic balance on the one spindle shaft side in a state where the rotary drum 4 is separated before returning to the one spindle shaft side again after the measurement of the shape. A device can be configured. In addition, the control device of the tire inspection apparatus 1 is configured to further control the carry-in means 7 and the carry-out means 9 so that the tire T is also replaced on one spindle shaft side in a state where the rotary drum 4 is separated. You can also.

Further, the rotating drum 4 and the shape measuring device 10 move to the other spindle shaft side after the measurement of the tire T uniformity and the outer shape measurement on one spindle shaft side, respectively, and the tire T uniformity on the other spindle shaft side. The control device of the tire inspection device 1 can be configured to measure the outer shape. In addition, the rotating drum 4 is separated from the one spindle shaft side until the rotating drum 4 moves to the other spindle shaft side and returns to the one spindle shaft side again. The control device of the tire inspection apparatus 1 can also be configured so that the tire T is also replaced on one of the spindle shafts.

As described above, according to the present invention, there can be provided a tire inspection apparatus and a tire inspection method capable of rationalizing the apparatus and efficiently performing tire inspection on a plurality of items.

A tire inspection apparatus according to the present invention is provided on each of a first tire conveyance unit and a second tire conveyance unit that convey a tire to be inspected, and a conveyance path of the first tire conveyance unit and the second tire conveyance unit. And a first spindle shaft and a second spindle shaft which rotatably support the tire, and a tire attached to both spindle shafts by reciprocating between the first spindle shaft and the second spindle shaft. A rotating drum capable of contacting; and a uniformity measuring unit for measuring a uniformity of a tire in contact with the rotating drum among tires attached to the first spindle shaft and the second spindle shaft; A dynamic balance measuring unit for measuring a dynamic balance of a tire that is not in contact with the rotating drum.

In this apparatus, first, while the rotating drum is in contact with the tire attached to the first spindle shaft, for example, the uniformity of the tire attached to the first spindle shaft can be measured. In addition, if the rotating drum is separated from the first spindle shaft, the dynamic balance of the tire attached to the first spindle shaft and the tire replacement are measured before the rotating drum returns to the same spindle shaft. It can be carried out. Therefore, it is possible to efficiently inspect a plurality of items with one tire inspection device by effectively using the time for the rotary drum to reciprocate between the two spindle shafts. In addition, since it is possible to measure uniformity and dynamic balance on each of the two spindle shafts that share one rotating drum, it is more comprehensive than equipment that has a dedicated uniform machine and a dedicated dynamic balance machine. The price of equipment in the country can be kept low.

In this tire inspection apparatus, the shape measuring device is configured to measure an apparatus base that is movable in a direction parallel to the moving direction of the rotating drum, a measuring unit for measuring the outer shape of the tire, and the measuring unit. And an outlet connected to the apparatus base so that the section can freely move between a shape measurement position where the outer shape of the tire can be measured with respect to the apparatus base and a retracted position for carrying in or out the tire. It is more preferable for the apparatus to be rationalized.

In conventional uniformity machines, it is common that one outer shape measuring device for measuring the outer shape of the tire is provided for each spindle shaft, or in a place different from the uniformity machine. The tire inspection apparatus having two spindle shafts in Patent Documents 1 and 2 is not provided with an outer shape measuring apparatus. In recent years, instead of a one-dimensional inspection type run-out device or the like, a two-dimensional inspection type geometry device or the like has been used as the outer shape measuring device. This geometry device is very expensive compared to the run-out device, and there is a risk that the device configuration that requires a geometry device for each spindle shaft will cause an increase in price.

On the other hand, if one shape measuring device reciprocates between two spindle shafts as described above, and one shape measuring device is used for measuring the outer shape of a tire attached to two spindle shafts, a plurality of It is no longer necessary to provide the shape measuring device, and even if an expensive shape measuring device such as a geometry device is used, there is no possibility that the device price will rise.

Further, the shape measuring device preferably measures the outer shape of the tire in accordance with the rotation of the tire in order to measure the uniformity of the tire attached to each spindle shaft. Thereby, highly efficient outer shape measurement is realized.

Further, the shape measuring device includes a device base movable in a direction parallel to a moving direction of the rotating drum, a measuring unit for measuring the outer shape of the tire, and the measuring unit. And withdrawing / retracting means coupled to the apparatus base so that the tire can be withdrawn and withdrawn between a shape measurement position where the outer shape of the tire can be measured and a retracted position for carrying in or carrying out the tire. It is preferable. This exit / withdrawal means enables the measuring unit of the shape measuring apparatus to retreat from the shape measuring position to the retracted position, so that the shape measuring apparatus smoothly moves from one spindle shaft side to the other spindle shaft side. Realizes smooth movement and tire loading and unloading.

The shape measurement position is preferably provided on the downstream side of the spindle shaft on the conveyance path of the tire conveyance means, and the shape measurement position and the retracted position are in the vertical direction with respect to the tire conveyance means. Preferably they are on the same side. The withdrawing / withdrawing means may raise and lower the measuring part in an oblique direction between the shape measuring position and the retracted position.

Thus, when the shape measuring position of the shape measuring apparatus is on the downstream side of the spindle shaft, the beetle excavator provided at the tire chuck position of the loading means and the loading means can approach the spindle shaft side on the upstream side of the spindle shaft. As a result, it is possible to prevent an increase in the length of the loading means. In addition, if the retreat position is above or below the shape measurement position of the shape measuring device and is set on the same side as the shape measurement position and the vertical direction with respect to the tire conveying means, the shape measurement position for the tire and The distance from the uniformity measurement position to the tire conveyance height where the loading / unloading means is provided is shortened, which shortens the time for loading the tire into the spindle shaft and the movement stroke of the leaving / leaving means. It is possible to suppress the lengthening.

It is preferable that the measuring unit measures the outer shape of at least both sidewalls of the outer shape of the tire using a slit laser. By using such a non-contact type shape measuring apparatus using a slit laser, the outer shape of the tire can be accurately and two-dimensionally measured in a short time.

More preferably, the outer shape of the tire in which the rotating drum is in contact with the tire attached to the spindle shaft is also measured.

Further, the tire inspection method according to the present invention provides a first tire conveying means and a second tire conveying means for conveying a tire, and supports the tire rotatably on a conveying path of each tire conveying means. A rotating drum is provided so that it can reciprocate between these spindle shafts and come into contact with a tire attached to each of the spindle shafts. Measuring the uniformity and outer shape of the tire attached to one spindle shaft while contacting the tire attached to the spindle shaft, and the rotating drum returns away from the one spindle shaft Until the outer shape of the tire attached to the other spindle shaft using the shape measuring device that measured the outer shape And measuring, until the rotating drum comes back away from the one of the spindle shaft, and carrying out the replacement of a tire mounted on the one of the spindle shaft, may be intended to include.

The method described above makes it possible to rationalize the inspection device and to inspect the tire efficiently with respect to multiple items.

Claims

A first tire conveying means and a second tire conveying means for conveying a tire to be inspected;
A first spindle shaft that is provided on a transport path of the first tire transport means and rotatably supports the tire;
A second spindle shaft that is provided on a transport path of the second tire transport means and rotatably supports the tire;
A rotating drum capable of contacting any of the tires attached to each spindle shaft by reciprocating between the first spindle shaft and the second spindle shaft;
A uniformity measuring unit for measuring a uniformity of a tire in contact with the rotating drum among tires attached to the first spindle shaft and the second spindle shaft;
And a dynamic balance measuring unit for measuring a dynamic balance of a tire that is not in contact with the rotating drum.
The apparatus further comprises a shape measuring device for measuring an outer shape of a tire attached to each spindle shaft, the shape measuring device including a moving direction of the rotary drum between the first spindle shaft and the second spindle shaft. The tire inspection apparatus according to claim 1, wherein the tire inspection apparatus reciprocates independently of the rotating drum along a parallel direction.
A first tire conveying means and a second tire conveying means for conveying a tire to be inspected;
A first spindle shaft that is provided on a transport path of the first tire transport means and rotatably supports the tire;
A second spindle shaft that is provided on a transport path of the second tire transport means and rotatably supports the tire;
A rotating drum capable of contacting any of the tires attached to each spindle shaft by reciprocating between the first spindle shaft and the second spindle shaft;
A uniformity measuring unit for measuring a uniformity of a tire in contact with the rotating drum among tires attached to the first spindle shaft and the second spindle shaft;
A shape measuring device for measuring an outer shape of a tire attached to each spindle shaft, and the shape measuring device moves between the first spindle shaft and the second spindle shaft in the moving direction of the rotary drum. A tire inspection device that reciprocates independently of the rotating drum along a direction parallel to the rotating drum.
The tire inspection device according to claim 2 or 3, wherein the shape measuring device measures an outer shape of the tire in accordance with measurement of uniformity of a tire attached to each spindle shaft.
The shape measuring device includes a device base that is movable in a direction parallel to the moving direction of the rotating drum, a measuring unit for measuring the outer shape of the tire, and the measuring unit is connected to the device base. On the other hand, it is provided with an exit / retreat means coupled to the apparatus base so as to be freely retractable between a shape measurement position where the outer shape of the tire can be measured and a retracted position for carrying in or out the tire. The tire inspection device according to claim 2 or 3.
The tire inspection device according to claim 5, wherein the shape measurement position is provided on the downstream side of the spindle shaft on a conveyance path of the tire conveyance means.
6. The tire inspection device according to claim 5, wherein the retreat position is provided on the upper side or the lower side of the shape measurement position and on the same side as the shape measurement position with respect to the tire conveying means in the vertical direction.
6. The tire inspection apparatus according to claim 5, wherein the withdrawing / withdrawing means raises and lowers the measuring unit in an oblique direction between the shape measuring position and the retracted position.
The tire inspection device according to claim 5, wherein the measurement unit measures an outer shape of at least both sidewall portions of the outer shape of the tire using a slit-shaped laser.
Providing a first tire conveying means and a second tire conveying means for conveying a tire;
A spindle shaft that rotatably supports the tire is provided on the transport path of each tire transport means, and it is possible to reciprocate between these spindle shafts to contact the tire attached to each spindle shaft. Providing a rotating drum so that
Measuring the uniformity of a tire attached to one spindle shaft while the rotating drum is in contact with the tire attached to one spindle shaft;
Measuring the dynamic balance of a tire attached to one of the spindle shafts and changing the tire before the rotating drum is separated from the one spindle shaft and returns. .
The tire inspection method according to claim 10, further comprising measuring an outer shape of the tire attached to the one spindle shaft when the rotating drum is in contact with the tire attached to the one spindle shaft.
Providing a first tire conveying means and a second tire conveying means for conveying a tire;
A spindle shaft for rotatably supporting the tire is provided on the conveyance path of each tire conveying means, and it is possible to reciprocate between these spindle shafts to contact a tire attached to each spindle shaft. Providing a rotating drum so that
Measuring the uniformity and outer shape of the tire attached to one spindle shaft while the rotating drum is in contact with the tire attached to one spindle shaft;
Measuring the outer shape of the tire attached to the other spindle shaft using the shape measuring device that measures the outer shape until the rotating drum is separated and returned from the one spindle shaft; A tire inspection method comprising: changing a tire attached to one spindle shaft until the rotating drum is separated from one spindle shaft and returns.