JPS61191947A - X-ray inspector for tire - Google Patents

Abstract

PURPOSE:To enable tomographic inspection which is small and inexpensive while being diverse, by providing an X-ray source movably in an external box adapted to shield X-rays to allow the observation of an X-ray tomographic image of a tire from outside. CONSTITUTION:An external box 1 adapted to shield X-rays is provided with an openable or closeable door for carrying in or out a tire. An X-ray source 21 is provided in the external box 1 in such a manner as to be movable between the inspection position close to the tire and the retreat position at the carry-in and-out of the tire. Moreover, an observation window 8 which has a fluorescent plate to allow the observation of an X-ray tomographic image of the tire from outside is provided at a part of the external box 1 as facing the X-ray source 21 through the tire. Then, a tire is carried onto a table lifter 31 with a drive roller 32, a free roller 33, a guide roller 34 and the like, the table lifter 31 is positioned so that the center of the tire to be inspected positioned in the center of a radiation window of the X-ray source 21 and then, the X-ray source 21 is set at the inspection position to implement an inspection.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an X-ray inspection device for tires that non-destructively inspects the properties of wires and the like inside tires using X-rays.

(Prior Art) Conventionally, in order to non-destructively inspect the inside of a tire, X-rays, lasers, ultrasonic waves, magnetism, etc. have been used depending on the inspection purpose.
Ru. In particular, for tires with steel cords such as TBR (rack and pass tires) and PSR (steel radial tires for passenger cars), if there is an abnormality in the arrangement of the cords, stress may occur and cause a burst accident. Because of the risk of this, X-rays are used to inspect the ply hood arrangement and belt.

In such a tire X-ray inspection system, the inspection section including the X-ray source is divided into one room by a wall to prevent XII leakage, and the X-ray transmission images detected in this inspection room are separated from the inspection room. Some systems allow visual inspection via a monitor television in a separate control room.

(Problems to be Solved by the Invention) However, this type of conventional X-ray inspection equipment is divided into one room by a wall to prevent X@ leakage, and
The room also requires a large amount of space as it is necessary to inspect tires of various sizes, resulting in a problem that requires a huge amount of capital investment. In addition, with conventional X-ray inspection equipment,
When recording data, the image on the monitor TV must be taken with a camera, so there is a problem with the resolution, and in order to take a detailed image, another x,! There are inconveniences such as re-copying with a device.

However, recently, the demands and needs for fluoroscopic examination using X-rays have become extremely high. Therefore, there is a strong need for the development of a simple X-ray inspection device that is small, inexpensive, and can meet various fluoroscopic inspection requirements.

The object of the present invention was made in response to the above-mentioned demands, and it is an object of the present invention to provide an X-ray inspection device for tires that is small and inexpensive, and that is appropriately configured and arranged so as to be able to perform various fluoroscopic inspections. be.

(Means for Solving the Problems) In order to achieve the above object, the tire X-ray inspection device of the present invention includes an outer casing capable of blocking XLS, and a tire mounted on the outer casing so that the tire can be placed inside the outer casing. A door that can be opened and closed for loading and unloading, and a door provided inside the outer casing so as to be movable between an inspection position close to the tires carried into the outer casing and a retreat position away from the tire loading and unloading route. X,! an observation window having a fluorescent plate provided in a portion of the outer casing that faces the X-ray source at the inspection position via the tire so that the XS transmitted image of the tire can be observed from the outside; The apparatus is characterized by comprising means for positioning the tire carried into the outer case with respect to the X-ray source and the observation window.

(Function) Here, the outer box is, for example, width 1400'l'% height 1800'
It is compact with a depth of 900 meters, can be configured to be movable, and can prevent leakage of XLS by lining the portion facing the X-ray source at the common inspection position with a lead plate. By opening the door inside this outer case, the tires to be tested can be loaded and unloaded. At this time, the XLS source can be positioned at a retreated position away from the loading and unloading route, so the tires to be tested can be loaded and unloaded. The X-ray source is not damaged or obstructed during this process. Moreover, the X-ray transmission image of the test tire can be directly visually observed through the fluorescent plate in the observation window.

(Example) FIG. 1 is an external perspective view showing the configuration of an example of the tire X-ray inspection apparatus of the present invention. The outer box l has a width W=1400■,
It has a height h=18QO118 and a depth d=900-, and a door 2 for carrying in and out the tires to be tested, a display lamp 8 to indicate when X-rays are being generated, and an operation panel 4 are provided on the side. The door 2 is provided with an observation window 5 having a barge glass plate for observing the tread surface of the tires being carried in, and the inner surface of the observation window 5 has a barge glass plate when not being observed. A removable shirt plate is provided to protect the plate. The operation panel 4 is provided with a switch 4a for turning on/off the motor that rotates the test tire and for selecting its rotation direction, a speed adjustment knob 4b for adjusting its rotation speed, and a photographing switch 4c. . In addition, in order to easily carry in and out the tires to be tested through the door 2, a slope 6 is provided below the door 2.
Set up.

On the front of the outer box 1 are a door 7 for controlling the position of the XII source, an observation room 8 having a barge glass plate for observing the sidewall of the test tire, operation panels 9 and 10, and an XS generator. A clothing display lamp 11 is provided to display the inside. As shown in an enlarged view in FIG. 2, the observation window 8 includes a window frame 18 that is swingable about a shaft 12 relative to the main body, and a fluorescent plate 14 that is attached to the window frame 18 so that it can be opened and closed. It is configured to have a door 15 having a door 15, and a Polaroid film 16 can be detachably attached to the back surface of the fluorescent plate 14.

The operation panel 9 includes a voltage setting knob 9a and a current setting knob 9b for setting the voltage and current of the X-ray source, and a voltmeter 90 and an ammeter 9 for displaying the output voltage and current.
d. Polaroid shooting 1 [14 Timer 9e1 Polaroid shooting switch 9f interlocked with this Polaroid shooting timer 9e.

Interlock key hole 9gs interlock indicator 9
h etc. will be provided. Also, like the operation panel 4 provided on the side, the operation panel 10 includes a switch 10a for turning on/off the motor that rotates the test tire and selecting its rotation direction, and a switch 10a for adjusting its rotation speed. An adjustment knob lOb is provided.

Further, a foot switch 17 for turning on and off the X-ray source is provided on the outside of the outer case 1.

Next, the internal structure of the outer case 1 will be explained.

FIG. 8 is a diagram showing n7 opened. The X-ray source 21 is rotatably held by a holding member 22 as shown by a double arrow a,
This holding member 22 is rotatably held by the relay member 28 in a horizontal plane as shown by the double-headed arrow. The relay member 28 has a rod 24a in the front-rear direction.

24k) is attached, and these rods 24a and 24b are mounted on bearing members 25a and 251) so as to be slidable in the front-rear direction indicated by the double arrow C. The bearing is member 25a.

25b is attached to the transversely moving members 26a, 26b, and the transversely moving members 26a, 26b are moved laterally -A/275L.

27t) so as to be slidable in the horizontal direction indicated by the double arrow d. By holding X@@21 movably in the front, rear, and lateral directions within the outer case, the test tire can be placed in a retracted position away from the loading and unloading route of the test tire, and by projecting X@21. To enable positioning to the inspection position to be inspected. In addition, by holding the relay member 28 so as to be able to rotate in a horizontal plane and being rotatably held by the holding member 22, the tread inspection position facing the observation window 5 and the side facing the observation window 8 are provided. To enable positioning at a wall inspection position and to finely adjust an X-ray projection direction at each inspection position. In addition to the high-voltage cable 28, the X@ source 21 includes an oil supply and oil drain tube 29a for circulating a cooling medium (oil) to cool the X-ray source 21.

Connect 29b.

Further, a table lifter 81 is provided below the xs source 21 so as to be movable up and down. This table lifter 81 includes a drive roller 82 and a free ruler 88 that are in contact with the tread part of the test tire, a guide roller 84 that is in contact with the side part, and a motor 85 that rotates the test tire via the drive roller 82. establish. The motor 85 and the drive roller 82 are connected via a power transmission member 86 such as a chain or belt,
Further, in order to adapt the 7-lead roller 88 to various tire sizes, its bearings are formed in members 87a and 87b according to the tire size, and the mounting position thereof can be changed.

Figure 4 is a diagram showing the door 2 opened.0 Inside the outer box 1, the test tire is moved in the direction shown by the double arrow e to a position away from the loading/unloading route and to a position entering the route. A slide plate 41 may be provided. A fluorescent plate 42 is provided on the slide plate 41 at a portion facing the observation window 5 provided in the door 2 at the position where the sliding plate 41 enters the loading/unloading route of the tires to be tested. Similarly, the Polaroid film can be detachably attached.

The operation of this embodiment will be explained below.

First, the door 2 is opened, and the tire to be tested is transported between the drive roller 82 and the 7-lead 4-ra 88 while being rolled using the slope 6. When loading the tire to be tested, the X-ray source 21 and slide plate 41 are set in a retracted position away from the carry-in route, and the table lifter 81 is set in the lowest position. After that, open the front door 7 and operate the operation button (not shown) for raising and lowering the table lifter 81 placed near it, so that the center of the tire to be tested is approximately at the center of the emission window of the X-ray source 21. Raise the table 71 so that it is in the correct position.

When the setting of the tire to be inspected is completed, the X-ray source 21 is moved and set at a required inspection position.

That is, when inspecting the sidewall, the X-ray source 21 is set inside the tire to be inspected so that its emission window faces the observation window 8. Here, the X-ray source 21 is rotated relative to the holding member 22, and the window frame 18 of the observation window 8 is rotated about the shaft 12 to adjust the inspection area on the sidewall.

After setting the X-ray source 21 to the inspection position, open the door 2.
・7. With the button closed, press switch 10& on the operation panel 10.
Then, the operator operates the speed control knob 10b to rotate the diamond to be examined, and depresses the foot switch 17 to activate the X-ray source 21. Thereby, the arrangement of the cords can be inspected while visually observing the X-ray fluoroscopic image of the sidewall of the test tire through the fluorescent plate 14 in the observation chamber 8. Furthermore, when a fluoroscopic image to be photographed appears, the foot switch 17 is turned off to disable the Xll source 21, and the motor 85 is turned off.
is turned off to stop the rotation of the tire to be inspected, and the part to be photographed is faced to the observation window 8.

Thereafter, the door 15 of the observation chamber 8 is opened, and a laroid film 16 is attached to the back side of the fluorescent plate 14, or an X-ray film is attached directly to the tire to be inspected. In this way, by operating the photographing switch 9f on the operation panel 9 with the door 15 closed, the X-ray source 21 is activated for the exposure time preset by the photographing timer 9e, and the desired area is captured. x4I transmission images can be taken.

On the other hand, when inspecting the tread, the XLS source 21 is rotated around the relay member 28 to face the observation window 5 of the door 2 through the tread surface of the tire to be inspected, and the slide plate 41 is moved. The fluorescent plate 42 is then positioned between the tread surface and the observation window 5. Also, as shown in Figure 5,
The X-ray source 21 is equipped with a hood 45 for the purpose of bead expansion and centering in order to effectively guide xIIlil to the tread surface.
Attach the tire and insert its tip into the inside of the tire being tested.

When the setting of the xH source 21 to the tread inspection position is completed in this way, the test tire T is rotated by operating the switch 4a and the speed adjustment knob 4b of the operation panel 4 with the doors 2 and 7 closed. , step on foot switch 17 x
II source 21 is activated. Thereby, the cord arrangement of the belt can be inspected while observing the X-ray fluoroscopic image of the tread surface projected on the fluorescent plate 42 through the observation window 5. In addition, when photographing, as in the case of photographing on the sidewall described above, a Polaroid film is attached to the back of the fluorescent plate 42, or an X-ray film is attached directly to the tread surface, and the operation panel 42 is A photograph can be taken by operating the photographing switch 4c.

Note that the present invention can perform not only a fluoroscopic inspection of a tire but also an X-ray fluoroscopic inspection of the tire member itself.

(Effects of the Invention) As described above, according to the present invention, the tire 1flxs is compact, inexpensive, and capable of various transparent inspections.
An inspection device can be obtained. In addition, because it is compact and inexpensive, it can be used not only for tire inspection at tire production factories, but also for research in the field of tire technology development, and even for technical service, inspection of tires in use outside, and complaints. It can be widely applied to investigating the causes of

Furthermore, since various X-ray fluoroscopic examinations are possible, conventional X-ray
The load on the line inspection device can be reduced.

Brief explanation of the front screen Figure 1 is an external perspective view showing the configuration of an example of the tire XII inspection device of the present invention, Figure 2 is a partially enlarged view of Figure 1, and Figures 8 and 4 are internal configurations. FIG. 5 is a perspective view showing an example of an inspection mode.

1...Outer box 2...Door 8...Indication lamp 4...Operation panel 5...Observation window
6...Slope 7...Door 8
...Observation window 9, ...10...Operation panel 11
...Indication lamp 12...Axis 18.
... Window frame 14 ... Fluorescent plate 15 ... Door 1
6... Polaroid film 17... Foot switch 21... x, m source 22
... Holding member 28 ... Relay member 24ay
24b"・a 7 de 25a, 25b -...
The bearings are members 26a, 26b... Laterally moving member g7a
, 27b...Horizontal rail 28...High voltage cable
29a... Oil supply tube 29b... Oil drain tube 81... Table lifter 82... Drive roller
88...7 Lee roller 84...Guide roller 85...Motor 86...Power transmission member
1a, 57b... The bearing is a member 41... Slide plate 42... Fluorescent plate 45... 7-D
T. ,. Tested tire patent applicant Ohmic Co., Ltd. Applicant Brideston Co., Ltd. Figure 1 Figure 3

Claims (1)

[Claims] 1. An outer casing capable of blocking X-rays, a door provided on the outer casing that can be opened and closed for carrying tires into and out of the outer casing, and an inspection position close to the tires carried into the outer casing. and an X-ray source provided in the outer casing so as to be movable to a retreat position away from the tire loading and unloading route, and a portion of the outer casing that faces the X-ray source at the inspection position via the tire. an observation window having a fluorescent plate provided so that an X-ray transmission image of the tire can be observed from the outside; and means for positioning the tire carried into the outer case with respect to the X-ray source and the observation window. An X-ray inspection device for tires, comprising: