JP5390425B2 - Tire uniformity machine - Google Patents

Description

  The present invention relates to a tire uniformity machine (tire testing machine) that measures tire non-uniformity.

  In general, in tire uniformity machines, as disclosed in Patent Document 1, the tire non-uniformity is the following: a tire under test supported rotatably and detachably on a test machine body via a spindle. A tire uniformity machine having a wheel holder supported on the testing machine main body so as to be able to advance and retreat in the tire direction, and a road wheel rotatably supported on the wheel holder; It is measured by detecting a change in load acting on the tire under test while maintaining a constant distance from the rotation center of the road wheel.

  And, as disclosed in Patent Document 2, as an accessory device of a tire uniformity machine, a grinder is used to correct the non-uniformity based on the non-uniformity measurement result of the tire under test. Some are equipped with a device to cut the outer surface of the tire. Depending on the purpose of the grinder, there are a device called a “shoulder grinder” using a pair of rollers and a device called a “center grinder” using an integral cylindrical body.

JP-A-5-196533 Japanese Patent No. 2666153

  By the way, although the grinder mentioned above is used properly according to a use, since the use frequency is based on the correction request | requirement based on a nonuniformity measurement result, it is not applied to all the tires to be tested.

  Therefore, especially when both the shoulder grinder and the center grinder are equipped, for example, by assembling it integrally with the main body of the tester, in addition to supporting heavy objects, the vibration caused by the grinder's rotational vibration is suppressed. Therefore, the strength of the frame increases the size of the testing machine body, and various devices are generally provided around the measuring unit of the testing machine body, so even if a grinder is not used There was a problem that the accessibility and visibility to the measurement unit were lowered.

  Therefore, the present invention effectively disposes at least one of a shoulder grinder and a center grinder around the test machine main body to avoid an increase in the size of the test machine main body and accessibility to the measurement unit during maintenance. The purpose is to provide a tire uniformity machine that can improve visibility.

A tire uniformity machine according to the present invention for achieving such an object,
Independently of the main body of the testing machine having a measurement unit for measuring the non-uniformity of the tire under test, a carriage that is movable in a direction perpendicular to the tire flow direction in a horizontal plane and that is movable forward and backward is provided in the measurement unit, At least one of a shoulder grinder and a center grinder is mounted on the carriage, and when the grinder is used, the carriage is advanced to the measurement unit to correct the nonuniformity, and when not used, the carriage is retracted from the measurement unit. It can be evacuated.

Also,
A shoulder grinder and a center grinder are mounted on the carriage in tandem in the carriage movement direction.

Also,
The test machine main body and the test machine main body are provided with a connecting conveyor that conveys the tire under test so as to be freely raised and lowered between the equipment adjacent to the tire flow direction, and the test machine main body is in a lying state. The carriage is movable in a space between the device and the device.

  According to the tire uniformity machine according to the present invention, since at least one of the shoulder grinder and the center grinder is effectively disposed around the test machine main body via the carriage, an increase in the size of the test machine main body is avoided. At the time of maintenance, etc., the accessibility and visibility to the measurement unit can be improved by retracting the carriage away from the measurement unit.

It is a side view at the time of grinder apparatus unused in the tire uniformity machine which shows one Example of this invention. It is a side view at the time of the grinder apparatus use similarly in a tire uniformity machine. FIG. 6 is a plan view of the tire uniformity machine when the grinder device is not used. It is a top view at the time of using a shoulder grinder in a tire uniformity machine similarly. It is a top view at the time of center grinder use similarly in a tire uniformity machine.

  Hereinafter, a tire uniformity machine according to the present invention will be described in detail with reference to the drawings by way of examples.

  FIG. 1 is a side view when a grinder device is not used in a tire uniformity machine showing an embodiment of the present invention, FIG. 2 is a side view when the grinder device is used in the tire uniformity machine, and FIG. 3A is a tire uniformity machine. FIG. 3B is a plan view when a shoulder grinder is used in the tire uniformity machine, and FIG. 3C is a plan view when a center grinder is used in the tire uniformity machine.

  As shown in FIGS. 1 and 2, the tire uniformity machine has a bead lubrication unit 10, a measurement unit 20, and a marking unit (the test machine main body is a tire flow) sequentially from the upstream side in the tire conveyance direction (tire flow direction). Device 30 adjacent to the direction) is disposed, and a connecting conveyor (maintenance conveyor) 40 is interposed between the measurement unit 20 and the marking unit 30.

  The bead lubrication unit 10 is a station that includes centering of the tire under test W and applies a lubricant to the bead unit.

  The measuring unit 20 is disposed on the base 21a of the testing machine main body 21 so as to be opposed to a tire under test W supported so as to be rotationally driven via a spindle 22 in a direction perpendicular to the tire conveyance direction. This is a station for measuring the non-uniformity with a load wheel 23, a dimension measurement sensor 24 (see FIGS. 3A to 3C), and the like.

  The marking unit 30 is a station that performs marking on a required portion of the tire under test W whose non-uniformity has been measured by the measurement unit 20.

  The connecting conveyor 40 conveys the tire under test W measured by the measuring unit 20 to the marking unit 30 and is installed so as to be freely raised and lowered by an unillustrated raising and lowering cylinder (see arrows in FIG. 2). ).

  In this embodiment, the space (space) S between the measuring unit 20 (tester main body 21) and the marking unit 30 when the connecting conveyor 40 is in the lying down state (see the solid line state in FIG. 2). A carriage 50 that can move in a direction perpendicular to the tire flow direction is movable forward and backward (see arrows in FIG. 3A).

  The carriage 50 can be moved on the base 51a of the grinder device 51 by driving means such as a servo motor through guide means such as a linear guide (not shown). A shoulder grinder 52 and a center grinder are provided on the carriage 50. 53 are mounted in tandem in the movement direction of the carriage 50 (see FIG. 3A).

  The shoulder grinder 52 corrects unevenness of both shoulders on the outer peripheral surface of the tire W to be tested using a pair of rollers (not shown), and the center grinder 53 uses a cylindrical body to be tested. The unevenness of the central portion on the outer peripheral surface of the tire W is corrected.

  Since it is configured in this way, when the grinder device 51 is not used or is not being maintained, as shown in FIGS. 1 and 3A, the connecting conveyor 40 is raised up to a horizontal state. As a result, the tire under test W that has been measured by the measuring unit 20 is smoothly conveyed by the connecting conveyor 40 to the marking unit 30 of the next process.

  On the other hand, when the grinder device 51 is used or maintained, as shown in FIGS. 2, 3A and 3B, the connecting conveyor 40 is laid down until it is in a vertical state. Thereby, a space S is formed between the measurement unit 20 and the marking unit 30.

  Regarding the space (space) S secured for improving the maintenance / accessibility, since the carriage 50 of the grinder device 51 is retracted when the grinder is not used, the decrease in accessibility due to the provision of the grinder is not caused. Not invited. Further, since the grinder can be retracted from the measuring unit 20, the visibility with respect to the measuring unit 20 is not lowered.

  Further, when the grinder device 51 is used as necessary, the carriage 50 may be moved into the space S and the grinder device 51 may be advanced to a predetermined measurement position of the measuring unit 20. That is, when the shoulder grinder 52 is used, the shoulder grinder 52 may be positioned at the position shown in FIG. 3B so as to face the tire under test W, and when the center grinder 53 is used, it is shown in FIG. 3C. The center grinder 53 may be positioned at a position so as to face the tire under test W.

  In this way, according to the present embodiment, the carriage 50 that can be moved back and forth by the measuring unit 20 independently of the tester main body 21 using the space S formed when the connecting conveyor 40 is in the lying down state. The grinder device 51 is mounted on the carriage 50, and when the grinder device 51 is used, the carriage 50 is advanced to the measuring unit 20 to correct the nonuniformity. It was possible to evacuate by retreating.

  As a result, the testing machine main body 21 is not required to have the strength to support the grinder device 51, and the size of the testing machine main body 21 can be avoided. At the time of maintenance and the like, the carriage 50 is retracted from the measuring unit 20 and retracted. Thus, the accessibility and visibility to the measurement unit 20 are improved.

  Further, since the shoulder grinder 52 and the center grinder 53 are mounted in tandem on the carriage 50 in the moving direction of the carriage 50, the grinder device 51 can be made compact, and the drive means can be provided in one set. Because it is good, the cost can be reduced.

  Further, since the carriage 50 is movable in a direction orthogonal to the tire flow direction, the grinder device 51 can be easily opposed to the tire under test W with a small amount of movement.

  Needless to say, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. For example, any one of the shoulder grinder 52 and the center grinder 53 may be mounted on the carriage 50. Further, the carriage 50 may be movable back and forth in an oblique direction with respect to the space S. Of course, the carriage 50 may be allowed to advance and retract to the measuring unit 20 without using the space S formed by the connecting conveyor 40.

  The tire uniformity machine according to the present invention is preferably used for a tire uniformity machine of a pneumatic tire such as an automobile.

DESCRIPTION OF SYMBOLS 10 Bead lubrication part 20 Measurement part 21 Test machine main body 21a Base 22 Spindle 23 Load wheel 24 Dimension measurement sensor 30 Marking part 40 Connecting conveyor 50 Carriage 51 Grinder apparatus 51a Base 52 Shoulder grinder 53 Center grinder S Space (space)
W Tire under test

Claims (3)

Independently of the main body of the testing machine having a measurement unit for measuring the non-uniformity of the tire under test, a carriage that is movable in a direction perpendicular to the tire flow direction in a horizontal plane and that is movable forward and backward is provided in the measurement unit, At least one of a shoulder grinder and a center grinder is mounted on the carriage, and when the grinder is used, the carriage is advanced to the measurement unit to correct the nonuniformity, and when not used, the carriage is retracted from the measurement unit. The tire uniformity machine is characterized by being evacuated.   The tire uniformity machine according to claim 1, wherein a shoulder grinder and a center grinder are mounted on the carriage in a tandem in a moving direction of the carriage.   The test machine main body and the test machine main body are provided with a connecting conveyor that conveys the tire under test so as to be freely raised and lowered between the equipment adjacent to the tire flow direction, and the test machine main body is in a lying state. The tire uniformity machine according to claim 1 or 2, wherein the carriage is movable in a space between the machine and the device.

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