JP3404217B2 - Method for preventing abnormal fit of tire in tire measuring device and device for preventing abnormal fit of tire - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire measuring apparatus for inspecting the rigidity of tires of automobiles and the like, the uniformity of wall thickness, and the fact that they are perfect circles. TECHNICAL FIELD The present invention belongs to the technical field of a tire fitting abnormality preventing method for a tire measuring device and a tire fitting abnormality preventing device for the tire measuring device, which is capable of preventing damage to the tire due to the occurrence of such damage.

[0002]

2. Description of the Related Art As is well known, the rigidity of tires of automobiles and the like, the uniformity of wall thickness, and the fact that they are perfect circles have been tested by a tire measuring device. Such a tire measuring device is disclosed, for example, in Japanese Patent Publication No. 47-7562. Hereinafter, the outline of the tire measuring device according to the above-mentioned conventional example is shown in FIG. 4 which is a schematic diagram of a slope in its rest state, FIG. Will be described with reference to FIG.

That is, the overall construction of the tire measuring apparatus is as shown in FIG. 4, and includes a loading-side roller conveyor 1 in which a large number of rollers for transporting tires are arranged in parallel.
The intermediate roller conveyor 2 and the unloading side roller conveyor 3 are continuously arranged substantially horizontally. The intermediate roller 2
A through portion 2a is formed near the center of the tire by shortening the roller so that the tire a to be inspected does not fall. Above the penetrating portion 2a, a driving rim 4 formed in a shape corresponding to the inner circumferential circle on one side of the tire a is provided at the lower end of a vertical rotary shaft 6 having a pressure air introduction hole 5 at the upper end. The timing belt 8 hangs around the pulley 7 provided near the upper end.
A movable rim 9 that constitutes a rim for the tire a by engaging with the drive rim 4 below the penetrating portion 2a has a shaft 10 that shares the same axis with the drive rim 4.
It is configured to be lifted and lowered in a timely manner by a hydraulic cylinder 11 that is operated by the supply of hydraulic oil from a hydraulic oil supply source, which is a drive device (not shown).

The tire a, which has been conveyed by the carry-in roller conveyor 1 and transferred to the penetrating portion 2a of the intermediate roller conveyor 2, lifts the movable rim 9 to the position of the driving rim 4 by the hydraulic cylinder 11 and clamps it. Thus, airtightness is maintained. When the pressure air is supplied from the pressure air introduction hole 5 into the tire a, the tire a is laterally supplied.
A load wheel 13 having a load cell 12 attached thereto is pressed against it, and the tire a is pressed against the road wheel 13 and rotated by the rotation of the driving rim 4, while the load cell 12 determines the quality of the tire a. Is configured to be measured. Furthermore, on both sides in the width direction of the upper part of the intermediate roller conveyor 2,
To set the tire a at a position that coincides with the axial center of both rims 4 and 9 by synchronously turning inward by a link mechanism and a gear mechanism (not shown) when the tire a is conveyed almost above the movable rim 9. Are provided with a plurality of pressing arms 14a and 14b, and above the vicinity of the driving rim 4, the pressing arms 15 and 1 for separating the inspected tire a from the driving rim 4 are provided.
5 is moved up and down.

Further, in order to supply the tire a to the intermediate roller conveyor 2 in a timely manner, the widthwise sides of the carry-in side roller conveyor 1 are synchronously opened / closed by a link mechanism (not shown), and the leading end of the tire is fed during the transfer process. Arms 16, 16 that can advance to the front of a are provided. That is, at the time when the inspected tire a is transferred from the intermediate roller conveyor 2 to the unloading-side roller conveyor 3, the blocking arms 16 and 16 are swung in the direction of temporarily opening, and only one uninspected tire a is intermediately moved. It is to be moved to the roller conveyor 2 side. In this way, when the uninspected tire a is transferred to the intermediate roller conveyor 2, the position setting mechanism including the pressing arms 14a and 14b is activated by being detected by, for example, a photoelectric detector. There is.

Then, the inspected tire a lowered onto the intermediate roller conveyor 2 is transferred to the unloading side roller conveyor 3 and is unloaded in a desired direction. It Therefore, in the carry-out side roller conveyor 3, as in the case of the carry-in side roller conveyor 1, both ends in the width direction are synchronously driven by a link mechanism (not shown) so that the tip end thereof can advance to the front of the tire a during the transfer process. Arms 17 and 17 are provided, and the tire a held at the upper position of the penetrating portion 3a by the blocking arms 17 and 17 is provided with an inspection result by a stamping device 18 which is operated based on a classification instruction from a computer. Imprinted. Reference numeral 19 shown in FIGS. 5 and 6 is a rectangular main machine frame that supports the intermediate roller conveyor 2, the driving rim 4, the movable rim 9, the load wheel 13, and the like, and the carry-in side roller conveyor 1 and the carry-out side. Each of the roller conveyors 2 is supported by an auxiliary machine frame (not shown).

[0007]

When inspecting a tire with the tire measuring apparatus having the above-described structure, the tire is normally fitted into the movable rim and lifted, and the tire is normally placed between the movable rim and the driving rim. Need to be fitted into. In other words, if the tire is not normally fitted to the movable rim and is raised, and is fitted between the movable rim and the driving rim in an abnormal state, the tire will be broken and the yield of the tire will be reduced as a result. Is. However, in any tire measuring device, a tire fitting abnormality detecting device for detecting a tire fitting abnormality is not provided, and sometimes a tire damage trouble due to the tire fitting abnormality occurs at the time of tire inspection. However, there is a problem to be solved, which occurs and reduces the yield of tires.

Therefore, an object of the present invention is to detect a tire fitting abnormality and thereby reliably prevent a tire damage trouble due to the tire fitting abnormality. An object is to provide a tire fitting abnormality preventing method and a tire fitting abnormality preventing device.

[0009]

The present invention has been made in view of the above circumstances, and therefore, in order to solve the above problems, a tire fitting abnormality of a tire measuring apparatus according to claim 1 of the present invention. The means adopted by the prevention method is such that when the tire is fitted into the movable rim of the tire measuring device having a driving rim and a movable rim that are detachably fitted to the bead portions on both sides of the tire, and the tire is raised, Before raising the movable rim, the tilted state of the tire before being fitted into the movable rim is detected, and when it is determined that the tire is fitted into the movable rim abnormally, the movable rim should not be raised. Is characterized by.

Further, the means adopted by the tire fitting abnormality preventing method of the tire measuring device according to claim 2 of the present invention is the tire fitting abnormality preventing method of the tire measuring device according to claim 1, wherein the movable rim is During the ascent of the tire, the detection start time or the detection end time of the tire is measured at a plurality of positions in the radial direction of the tire fitted in the movable rim, and the time difference of either the detected detection start time or the detection end time is calculated. Then, when the time difference exceeds a prescribed time set in advance, the rising of the movable rim is stopped before the movable rim engages with the driving rim.

Further, the means adopted by the tire fitting abnormality preventing device of the tire measuring apparatus according to claim 3 of the present invention is such that the driving rim which is rotated at a constant height position and the tire which has been transferred are fitted. In a tire measuring device that includes a movable rim that is lifted by a vehicle and inspects the tire by rolling a road wheel to the tire that is fitted between the driving rim and the movable rim, before being fitted to the movable rim. Is provided with a tire fitting abnormality detecting device for detecting the tire inclination state, and the tires at a plurality of positions in the radial direction of the tire being fitted to the movable rim and being rising are detected above the tire fitting abnormality detecting device. A tire rising abnormality detecting device is provided, and when a tire inclination is detected by the tire fitting abnormality detecting device, a drive device for raising the movable rim is not operated, and the tire is Based on the detection signal from the ascending anomaly detection device, one of the tire detection start time or the detection end time at a plurality of positions in the radial direction of the tire is obtained and the time difference is obtained, and when this time difference exceeds a predetermined prescribed time, A drive device controller is provided for stopping the drive device before the movable rim engages with the drive rim.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, FIG. 1 (a) is a cross-sectional view in which a part of a tire inspection section of a tire measuring device equipped with a tire fitting abnormality preventing device for carrying out a tire fitting abnormality preventing method of the present invention is omitted. 1 (b) and FIG. 2 which is a partially broken plan view of the tire inspection part of the tire measuring device, and FIG.
Description will be made with reference to FIG. 3 of the stop flow diagram in sequence. However, since the configuration of the tire measuring device itself is the same as that described in the conventional example, the same name and the same reference numeral are used,
The tire fitting abnormality prevention device will be mainly described.

That is, the tire measuring apparatus according to the above-mentioned conventional example is provided with a tire fitting abnormality preventing device having a structure described later, and the tire fitting abnormality preventing device is provided in the front and rear in the radial direction of the tire a. A tire fitting abnormality detection device 20 that detects a fitting abnormal state that is a tire fitting abnormality in the movable rim 9 between left and right, and a diameter of the tire a that is rising due to the rising of the movable rim 9. It is composed of a tire rising abnormality detecting device 21 for detecting front and rear and right and left of the direction.

First, as shown in FIG. 1, the tire fitting abnormality detecting device 20 for detecting the abnormal fitting state of the tire a which is the tire fitting abnormality, as shown in FIG.
Of the tire detectors 20a and 20b, each of which is composed of an optical transmitter arranged at a predetermined interval in the width direction of the vehicle and a light receiver for receiving the light emitted from the optical transmitter, and the tire a of the intermediate roller conveyor 2. A tire detector 20c comprising an optical transmitter disposed at a predetermined interval in a direction orthogonal to the conveying direction and a light receiver for receiving light emitted from the optical transmitter,
20d (however, the tire detector 20d is not shown). It should be noted that infrared light, laser, etc. can be used as the light, and the arrangement positions of the optical transmitter and the light receiver are paired with the optical transmitter and the light receiver to detect the inclination state of the tire a. Since it suffices to obtain it, reversible arrangement is possible, and the number of arrangements can be appropriately selected.

Further, the abnormality detecting device 21 during tire rising is
It has the same configuration as the tire fitting abnormality detection device 20 only by the difference in the installation position. As shown in FIGS.
It is composed of an optical transmitter which is located above the intermediate roller conveyor 2 and is arranged at a predetermined interval in the width direction of the intermediate roller conveyor 2, and a light receiver which receives the light emitted from the optical transmitter. Tire detectors 21a and 21b, an optical transmitter disposed at a predetermined interval in a direction orthogonal to the direction of conveyance of the tire a of the intermediate roller conveyor 2, and a light receiver for receiving light emitted from the optical transmitter. And tire detectors 21c and 21d. It is preferable that the interval between the tire detectors of the tire fitting abnormality detecting device 20 and the tire rising abnormality detecting device 21 can be freely changed according to the size of the tire a.

The tire fitting abnormality detecting device 20 and the tire rising abnormality detecting device 21 respectively control the operation of a hydraulic pressure supply source (not shown) which is a drive device for expanding and contracting the rod of the hydraulic cylinder 11 and will be described later. It is configured to be input to a drive device controller that functions to operate. That is, this drive device controller determines that the tire a is normally fitted to the movable rim 9 when the light emitted from the optical transmitter of the tire fitting abnormality detection device 20 is received by the light receiver, and the hydraulic pressure is determined. Although the supply source is operated to raise the movable rim 9, the light emitted from the light transmitter of the tire fitting abnormality detection device 20 is blocked by the tire a and not received by the light receiver, and the inclination of the tire a is large. , It determines that the fitting state of the tire a into the movable rim 9 becomes abnormal and does not operate the hydraulic pressure supply source.

Further, the drive device controller controls the time when the light emitted from each light transmitter of the tire rising abnormality detecting device 21 is blocked by the rising tire a and is not received by the light receiving device, that is, The time difference of either the detection start time of the tire a or the detection end time of the tire a received by the light receiver is obtained, and when the time difference is less than a predetermined specified time, the fitting of the tire a to the movable rim 9 is performed. While the operation of the hydraulic pressure supply source is continued assuming that the tire is in the normal state, when the time difference exceeds a predetermined time, it is determined that the state of fitting the tire a, which is being raised, into the movable rim 9 is abnormal. It serves to stop the operation of the hydraulic pressure supply source and stop the movable rim 9 which is being raised.

The specified time is set based on past tire measurement data or results of actual tire measurement tests. That is, when the time difference is less than the specified time and the tire a that is rising is tilted, the movable rim 9 is moved to the drive rim 4
Is set according to whether or not the tire a fitted into the movable rim 9 is corrected so as to be in a normally fitted state between the movable rim 9 and the driving rim 4 when engaged with. .

A method of controlling the hydraulic oil supply source for operating the movable rim 9 will be described below with reference to FIG. That is, when the setting of the tire at the position of the through hole 2a by the pressing arms 14a and 14b is completed, the control flow is started.

First, in step 1, it is checked whether or not the tire fitting abnormality detector 20 detects the tire a. Then, in the case of Yes in which the tire a has been detected by any of the tire fitting abnormality detectors 20 and in the case of No in which the hydraulic oil supply source is not operated by the drive device controller and the tire a is not detected There is a movable rim 9
It is determined that the tire a is normally fitted in and the process proceeds to step 2.

In step 2, the hydraulic oil supply source is operated by an operation command from the drive device controller. And
The ascent of the movable rim 9 is started, the tire is fitted into the movable rim 9, and the tire is elevated, and the routine proceeds to step 3.

In step 3, it is checked whether or not the tire is detected by any of the tire detectors of the tire rising abnormality detecting device 21, and the tire is detected by any of the tire detectors by repeating until it is detected. Then, the process proceeds to step 4.

In step 4, when the light from the light transmitter of the tire detector begins to be blocked by the tire, time measurement is started and the process proceeds to step 5.

In step 5, it is checked whether or not the tires are detected by all the tire detectors of the tire rising abnormality detecting device 21, and the tires are detected by all the tire detectors by repeating until the tires are detected. And go to step 6.

At step 6, the time measurement is completed,
When the tires are detected by all the tire detectors, the time difference of the measurement time is obtained and the process proceeds to step 7.

In step 7, the time difference obtained in step 6 is compared with the length of the preset specified time, and the obtained time difference exceeds the specified time Yes.
In this case, the drive device controller stops the operation of the hydraulic oil supply source and stops the rising of the movable rim 9. On the other hand, if the time difference is No, which is less than the specified time, it is determined that the tire is fitted in the movable rim 9 normally, and the drive device controller continues the operation of the hydraulic oil supply source,
The movable rim 9 is raised.

Next, the working mode of the tire fitting abnormality preventing device of the tire measuring device having the above-mentioned structure will be specifically described. That is, before the movable rim 9 is raised, the state before the tire is fitted into the movable rim 9, that is, that the light is blocked by the tire a is the tire fitting abnormality detector 20.
Is detected, it is judged that the fitting state of the tire a into the movable rim 9 becomes abnormal because the inclination of the tire a is large, and the drive device controller issues an operation command to the hydraulic pressure supply source. There is no. Therefore, since the hydraulic oil is not supplied from the hydraulic pressure supply source to the hydraulic cylinder 11, the movable rim 9 does not rise, and the movable rim 9 and the driving rim 4 are bitten due to an abnormal fitting into the movable rim 9. Damage to the tire a due to the above is prevented in advance.

On the other hand, before the movable rim 9 is raised, when the light is not blocked by the tire a and the tire fitting abnormality detector 20 does not detect the tire a, the drive device controller sends the hydraulic pressure supply source. Then, the operation command is transmitted, and the hydraulic oil is supplied from the hydraulic pressure supply source to the hydraulic cylinder 11, so that the movable rim 9 starts to rise. Then, this time, the light emitted from each of the light transmitters of the tire rising abnormality detecting device 21 is blocked by the rising tire a and is not received by the light receiver. The time difference is obtained from either one of the detection end times of the tire a which has started
The length of the obtained time difference is compared with the predetermined time.

When the time difference is less than the specified time, it is determined that the tire a, which is being raised, is fitted into the movable rim 9 normally, and the movable rim 9 continues to be raised. On the other hand, when this time difference exceeds the specified time, it is determined that the fitting state of the ascending tire a into the movable rim 9 is abnormal, and the drive system controller stops the operation of the hydraulic pressure supply source and the hydraulic cylinder 11 Is stopped. Therefore, the rise of the movable rim 9 is stopped before the movable rim 9 is engaged with the driving rim 4, and therefore, the engagement between the movable rim 9 and the driving rim 4 is caused only by the abnormal fitting of the movable rim 9 into the movable rim 9. The tire a is prevented from being damaged due to the jamming.

As described above, according to the tire fitting abnormality preventing device of the tire measuring apparatus according to the present invention, the movable rim 9 and the driving member based on the fitting abnormality in the movable rim 9 are driven like the conventional tire measuring apparatus. Tire a due to biting with rim 4
There will be no damage problems. In the above description, an example in which the technical idea of the present invention is applied to the tire measuring device according to the conventional example has been described. However, the technical idea of the present invention is applied to a tire measuring device of this type, for example, Jikho 55-4419.
The present invention can also be applied to those disclosed in Japanese Patent Publication No. 4, Japanese Utility Model Publication No. 63-181842 or Japanese Patent Application Laid-Open No. 6-134890. The scope of thought is not limited.

[0031]

As described above, the claims 1 and 2 of the present invention are as follows.
According to the tire fitting abnormality preventing method of the tire measuring device and the tire fitting abnormality preventing device thereof,
When setting the position of the tire on the intermediate roller conveyor,
When it is determined that there is an abnormality in the fitting state of the movable rim, the movable rim is not raised, and when the position of the tire on the intermediate roller conveyor is set, it is determined that there is no abnormality in the fitting state of the movable rim. Even if it is raised, if there is an abnormality in the fitting state of the tire during climbing, the rise of the moving rim during climbing is stopped, and biting between the movable rim and the drive rim due to the fitting abnormality in the moving rim Since the damage to the tire caused by the tire is prevented in advance, there is no fear of causing the damage trouble of the tire unlike the conventional tire measuring device, and it can greatly contribute to the improvement of the yield of the tire.

[Brief description of drawings]

1 relates to an embodiment of the present invention, and FIG. 1 (a) and FIG. 1 (b) show a tire measuring device equipped with a tire fitting abnormality preventing device for carrying out a tire fitting abnormality preventing method of the present invention. FIG. 3 is a cross-sectional view in which a part of the tire inspection unit is omitted.

FIG. 2 is a partially broken plan view of a tire inspection unit of the tire measuring device according to the embodiment of the present invention.

FIG. 3 is a flow chart of raising / stopping the movable rim according to the embodiment of the present invention.

FIG. 4 is a schematic perspective view of a tire measuring device according to a conventional example in a rest state.

FIG. 5 is a plan sectional view of an inspection unit in a rest state of a tire measuring device according to a conventional example.

FIG. 6 is a transverse cross-sectional view of an inspection unit in a rest state of a tire measuring device according to a conventional example.

[Explanation of symbols]

a ... tire, 1 ... loading side roller conveyor, 2 ... intermediate roller conveyor, 2a ... penetration part, 3 ... unloading side roller conveyor, 3a ... penetration part, 4 ... drive rim, 5 ... pressure air introduction hole, 6 ... rotation Shaft, 7 ... Pulley, 8 ... Timing belt,
9 ... Movable rim, 10 ... Shaft, 11 ... Hydraulic cylinder mechanism, 1
2 ... load cell, 13 ... road wheel, 14a ... pressing arm, 14b ... pressing arm, 15 ... pressing arm, 16 ... blocking arm, 17
... Arm arm, 18 ... Imprinting device, 19 ... Square main machine frame, 20 ... Tire fitting abnormality detecting device, 20a, 20b, 20c, 2
0d ... tire detector, 21 ... tire rising abnormality detection device, 21a, 21b, 21c, 21d ... tire detector.

Claims (3)

(57) [Claims] 1. When a tire is fitted into a movable rim of a tire measuring apparatus having a driving rim and a movable rim that are detachably fitted to the bead portions on both sides of the tire, and the movable rim is raised. Before moving up, the tilted state of the tire before being fitted into the movable rim is detected, and when it is determined that the fitted state of the tire into the movable rim becomes abnormal, the movable rim is not raised. A method for preventing abnormal tire fitting in a tire measuring device. 2. The detection start time or the detection end time of the tire at a plurality of radial positions of the tire fitted into the movable rim is measured while the movable rim is rising, and the measured detection start time or the detection end time is measured. A time difference of any one of the times is obtained, and when the time difference exceeds a predetermined specified time, the moving rim is stopped from rising before being engaged with the driving rim. Item 1
A method for preventing a tire fitting abnormality of the tire measuring device according to. 3. A drive rim rotated at a fixed height position,
A tire measuring device that includes a movable rim that fits and moves up a tire that has been transferred, and inspects the tire by rolling the road wheel to the tire that is fitted between the driving rim and the movable rim, A tire fitting abnormality detecting device for detecting a tilted state of the tire before being fitted to the movable rim is provided, and a diameter of a tire fitted to the movable rim and rising as a position above the tire fitting abnormality detecting device. A tire rising abnormality detecting device for detecting tires at a plurality of positions in the direction is provided, and when a tire inclination is detected by the tire fitting abnormality detecting device, the drive device for raising the movable rim is not operated, and Based on the detection signal from the tire rising abnormality detection device, determine either the detection start time or the detection end time at multiple locations in the radial direction of the tire and determine the time difference. Therefore, when the time difference exceeds a predetermined specified time, a drive device controller is provided for stopping the drive device before the movable rim engages with the drive rim. Abnormality prevention device for fitting.