JPS6052708A - Code arrangement checking machine of tire - Google Patents

Abstract

PURPOSE:To make an accurate check possible by moving accurately a radiation source and a detector to prescribed positions in accordance with the size of a tire. CONSTITUTION:When a cylinder 9 is operated, a placing table 7 is shaked between a placing position A, where the table 7 is brought into contact with a stopper 8, and a position B where is stands approximate straight. A machine is formed into such shape that lines of revolving shafts of respective tires are placed on a common vertical face P. Detectors 109 and 110 are attached to a moving table 105, and they receive X rays from an X-ray tube 100, which are transmitted through tires T, to detect the intensity of X rays. Cylinders 91 and 98 constitute, as the whole, a moving mechanism 121 which moves the X-ray tube 100 and detectors 109 and 110 to the measuring position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tire cord arrangement inspection machine that uses radiation to inspect the arrangement of cords embedded within a tire.

Conventionally, as a tire cord arrangement inspection machine as described above, the one described in Japanese Patent Publication No. 55-703, for example, is known. In this device, when a tire is carried onto a horizontal swing frame, the swing frame tilts to a substantially upright state.

At this time, the tread surface of the tire contacts the belt, and as the belt runs, the tire rotates around its axis of rotation. Further, due to this tilting, the tip of the rotary rond parallel to the rotational axis of the tire is inserted into the space surrounded by the bead of the tire (where the rim is generally placed). This rotating rond is rotatably supported by a frame that supports the swinging frame, and at a temperature of ℃・-51,'f1-, an arm holding a 7-inch turtle or (:/)-bu is mounted at the tip of this rotating rond. is fixed, and this radio eyepiece or τ is fixed to the swinging frame 1/-.
−...p) A pair of detectors that receive radiation are fixed at ℃
·reactor. After tilting the swing frame, open the rotation port ′
The radio eye 7 node is rotated and the radio eye 7 node is moved to a specified position within the tire. Next L(, the belt is run and the front and rear wheels are rotated. At this time, the radio wheels 1-, 1.-7
The radiation from ゛ passes through the tire and goes to the detector.
However, at this time, the intensity of the radiation received by the detector differs depending on whether the radiation passes through the rubber part or the coat part.
It is possible to detect irregularities in the code arrangement.

Here, if there is a change in the size of the tire to be used, the area to be measured changes in the radial direction of the tire corresponding to the first or second tire size.

However, since the tire code arrangement (11) inspection machine does not have information about the tire size, it is changed to (sigma) the 1st. When there is, it is not possible to make the straight line connecting the tope and the detector 1 with the 4111 constant f position of d-ear, and therefore the test result is incorrect. This invention d', which has the problem of a 1/i-error, was made by focusing on the above-mentioned problem. The purpose is to perform accurate inspections by precisely moving the device to the desired position.

This difficult purpose consists of a determination mechanism that determines the size of the tire, a holding mechanism that holds the tire in a fixed position, a radiation source that emits radiation, and a radiation source that transmits radiation through the tire. A detector receives one radiation beam from a source and detects the intensity of the radiation, and a straight line connecting the radiation source and the detector is determined based on the determination result of the determination mechanism and intersects six measurement points. Move the radiation source and the detector to the desired position, and place the moving mechanism and the tire in the holding position, and then rotate the rotation mechanism and tire rotation 'it+, If,'
i' il (two detectors straight detection 1.7-'-incidental radiation 5 glands σ
・Based on strength and weakness 7i # (1) Knee [・Dispatch!・1]
and a measuring mechanism for measuring: 5. Ly, I Ul, 20) Embodiments of the invention based on the drawings Akane J, l □jl)--Do 3.

1゜; In 8 concave 1, (1) is the floor surface, and this l
- Frame (2) is already installed +l 1, Frame (2) is (center perpendicular to) knee l, ( 3) and this medium heat bee y, (3
) on one side of 71. - Mu (2) is evening, iya・')
廿1-< is not determined one by one. 3. The fixed mechanism (4) is installed +bee. 1) The constant mechanism (4) has a water beam (5), and a bearing (6) is mounted on the Taihei beam (5) to connect it to the -μ end of the R stand (7). It is supported that the file can be rotated). The tip of the mounting table (7) touches the stopper (8) fixed to the frame 2) ~ (-
＼・ru、、tg+(, the head side is connected to the lower end of the arm (2), nf, nin' +l y ta, this σ) cylinder (9) nohi"stonrono1-(10) The tip of the bone (7) is connected to the central part of the placement table (7).As a result, when the cylinder (9) is operated, the placement bone (7)
+2, the stopper (8) oscillates between the placement position (A) in contact with lc, the substantially upright position (B), and 1).

(Even if tires (T) of different sizes are placed on the tray (7), the upper surface of this tray (7) will be marked with each tire (', ''), 7) [SJ rotation. Axial incense stick/common 1-vertical IAI ('), h!・[
= position・−ri′ru. J-') Shape formation 7. fil) a2++ yo fre, 8, ''') top of the bird and... -kubeam(5)(・jT 1r(1'j
￥Sa No. 16 - Pair of vertical guide ports>: M 1. - Yes, C+-1,,i;, the guide r knot (l i) (1
2, 1 (・1, -・gujt'',) move part j f, J'
(+3)Q4+ KA上-Fic lI'4 h TEEmotion'T *? K Tl u tt =t, -i:4,.

(15) is Fray 7″, 1-2 parts of (2) and water
B U, screw 41 that could not be supported in (5)
1, gu) 1) 1, The upper part of the sleeve (+5) and the do part are formed with a reverse thread 1 and a -X. (screwed into 1 = υ (
・Result of 61, 2, ・2 No. 1] When the shaft 1f51 is rotated by the driving means (161), the moving member (13) (
34) move toward each other or away from each other. Mobile unit abduction (1)
31 (14)) J, electric power] - switch old) (1 trend - is provided) 1.1-jl et al.'s photoelectric T-x 4>"-1
-Q71 (18i 11 the vertical plane ('') Ll'
-r) l with the screw li=m (151ic
Each time this screw shaft rotates once, the two balloons that are produced are removed. 1. I,
In the figure, the pulse counter is sent to the goo and counted. Then, the optoelectronic switch (17) +181 controls the pulses going from the pulse encoder to the pulse counter by entering or blocking the light. Measure the inner and outer diameters of the tire (T),
I am trying to determine the size of. The aforementioned horizontal beam (5), mounting table (7), cylinder (9), guide rod θD02), moving members (13) (14), screw shaft (lω
, driving means (16), optoelectronic switch (17) Q8),
The pulse encoder and pulse counter collectively constitute the determination mechanism (4).

A support stand Cυ (22I) is fixed to the other end of the central beam (3) and the frame (2), and each support stand CD (
A roller (23+ (24)) is rotatably supported on 22). A guide plate fixed to the central beam (3) is located between this roller (23) and the base end of the mounting table (7). (2
5) is installed, and this guide plate 125) is placed on the mounting table (7).
The tire (T) discharged from the mounting table (7) is guided by the roller (231 (24)) by being swung toward the approximately upright position (B). The upper central beam (3) and the other end of the frame (2) are fitted with horizontal support beams (21 is rotatably supported.The tire (T) is supported by a guide plate (25).
When rolling on the top, these guide rollers f21i)
(29), so it will not fall.

c30+ is a lower guide, and this lower guide 00) is a support base (2]1 (2) as shown in Fig. 1.2.3.
A pair of horizontal rotation shafts (3]) supported by 21 (321
, and these rotation axes (3) 1 (3 are support beams (
26) (parallel to 271. Rotation axis (3+l (32
1 is fixed with fan-shaped external gears (331+341) that mesh with each other, and thereby the rotating shafts (IHs) rotate in opposite directions in synchronization. Each rotating shaft (31143 has a pair of moving bars C351 (The base ends of 361 are fixed, and these moving bars ff, 35) (361 are inclined so that they approach each other upward as shown in FIG. 1. Each moving bar (3ω Zheng) There are multiple mini rollers (
3η are attached, and these mini rollers (37) allow rotation of the tire (T) even if the moving bar (35) (3G+) is in contact with the sidewall part of the tire (T).

(38) is a cylinder taken up by the support stand (221), and this cylinder (piston rod (39) of 38j)
The tip of the bar is connected to one moving bar C35). As a result - when the cylinder 11 is activated, the movement bar (35
1 (36+) opens and closes synchronously around the rotation axis oao21, thereby centering the tire (T) supported by the roller (23+ CI!41). External gear (331 (34)
, the moving bar 0 (3G), and the cylinder (to) constitute the lower guide wheel as a whole. Again, in Figure 1.2, above the lower guide GO), there is a
An upper guide (4υ) having the same configuration as 30) is provided.

This upper guide (41) is mounted on the upper part of the frame (2) and has two pairs of bearings (42), and these bearings (42) are equipped with fan-shaped external gears (431 (44) that mesh with each other).
Rotary shafts (45) and (46) to which 1 is attached are supported. Each rotating shaft (45) (46) has a pair of moving bars (481) each having a plurality of mini rollers (47) attached thereto.
(49) is fixed. (5o) is frame (2)
It is a cylinder attached to the upper part of the piston rod I! of this cylinder (50). The tip of the 5I) is the rotating shaft (
45) are connected. As a result, when the cylinder (50) is activated, the moving bars (48) and (49) open and close in synchronization to center the tire (T). .The above-mentioned bearing (42), external gear (
431 (44), rotation axis (4 pins 4 (j), moving bar <4
87 (491, the cylinder side as a whole constitutes the upper guide (41).Then, the roller C231 (
2 guide rollers (2g) (29), lower guide (30)
, the upper guide (411 as a whole constitutes a holding mechanism l53 that holds the tire (T) in a fixed position). In Fig. 2, (61) is a bead opening mechanism provided on the front side of the other side frame (2), and this bead opening mechanism (
611 pushes open both bead portions of the tire (T) held by the holding mechanism 63), and attaches a radiation source to be described later to the tire (T).
so that it can be easily inserted into the Bead opening mechanism (6
1) has an elevating frame (62), and this elevating frame (621) is attached to the tip of a piston rod (60) of a cylinder (59) connected to the upper part of the frame (2).Elevating frame (62) ) is attached with a horizontal cylinder (63) extending in the front-rear direction, and a moving frame (to) is connected to the tip of the piston rod of this cylinder (63). One is a pair of cylindrical guides +66, as shown in detail in Fig. 4.
1 (67), each cylindrical guide +66) (67)
A movable iron link 6ω extending in the front-rear direction is slidably inserted into. (70) is a moving frame in the center (65)
This link is rotatably supported by σ0
) is connected to the moving rod (611G (6ω).

Further, a cylinder σD is attached to the movable frame haze, and the tip of a piston rod ffZ of this cylinder ση is connected to the movable rod. As a result, cylinder υB
When the moving rod (6gl (6! 11) is operated, the moving rod (6! ), the proximal ends of opening claws σ51σ0 protruding toward the opposing holder (74) σ tank are rotatably supported.These opening claws (751 (71W are coaxial), and each opening claw Q! 5) At the tip of υ0 is a tire (T
) is a disc f that rolls into contact with the inner surface of both bead portions (C).
f? ) σ barrel is formed. The above-mentioned elevating frame, cylinder (63), moving frame-1 moving rondo (to) (6!lll, link t70), cylinder (7I),
The opening claws (7!5) (76) constitute the bead opening mechanism (611) as a whole. In Fig. 1.2.5, the rear part of the frame (2) on the other side has a vertical cylinder (9).
), and the head side of this cylinder υυ is connected to the upper part of the frame (2).
93) is attached. A vertical guide body (94) is fixed to the rear part of the frame (2), and this guide body (
A guide block (95) attached to the elevating frame (931) is slidably engaged with the elevating frame (94).A horizontal guide frame (96) extending in the front-rear direction is attached to the upper part of the elevating frame (93). ) has been removed, and this guide frame (961) has a movable frame (961) that can move in the front and back direction.
(5) is slidably supported.

((B) is a cylinder attached to the elevating frame (93), and the piston rod (93) of this cylinder
9) is connected to a moving frame (97).

This moving frame! An X-ray tube 4 as a radiation source that emits radiation, e.g. be done. Lifting frame t! Support stands (102) (103) are attached to the front and rear parts of the lower end of the support stand (103).
02) An inclined guide bar (104) is fixed to (103) as shown in FIG. Each guide bar (
A guide block (106) fixed to the moving table (105) is slidably engaged with the guide block (104'). (107
) are cylinders attached to the support bases (102) (103), and the piston rods (
! 08) is connected to the moving table (105). Each movable table (105) has a detector (109).
(110) are installed and these detectors (109)
(110) receives X-rays from the X-ray tube (ioo) that has passed through the tire (T) and detects the intensity of the X-rays. In this way, since the X-ray tube a (g) and the detectors (109 and 110) are attached to the common lifting frame (93), the cylinder (
91), these X-ray tubes 4 and detectors (109) and (110) move together in the radial direction of the tire (T), in this case in the vertical direction. As a result, X-ray tube 00I and detector (109) (110)
The positional relationship in the radial direction of the tire (T) with the tire (T) does not change even if they move and remains constant, improving detection accuracy.

Further, on the intersection area (D) of the fields of view of the detectors (109) and (110), there is a radiation opening (101) of the X-ray tube four.
The movement route (E) of is located. As a result, by simply operating the cylinder serving as the second moving mechanism and moving only the radiation port (101) of the X-ray tube α (g) to the intersection area ('D) in the direction of the rotational axis of the tire (T), Preparation for detection is completed, and the detection work is quick and reliable, and the relative positional relationship in the axial direction is also more accurate than when individually positioning. In addition, as mentioned above, since the bead part (C) of the tire (T) is pushed open by the bead opening mechanism button), even if the X-ray tube (2) is large, it can be inserted into the tire (T). As a result, the intensity of the X-rays emitted from the X-ray tube a (g) can be increased. Therefore, as shown by the imaginary lines in FIG. 5, sufficient detection can be achieved even if a plurality of (two in FIG. 5) detectors are further provided on the movable table (105). In this way, when the number of detectors increases, the code arrangement of the tire (T) can be detected over a wide range, and the detection can be made more accurate. The aforementioned cylinder +91) (98J
+The whole X-ray tube 4 and detector (109)
The moving mechanism (121) that moves (110) to the measurement position
). And these cylinders (91) (9
8) The amount of expansion and contraction of the piston rods (92) and (99) is determined based on the determination result of the determination mechanism (4). That is, by determining the size of the tire (T) by the determining mechanism (4), it is determined which part of the tire (T) is best to measure, and the radiation port (1) is attached to this measuring part.
01) and the detectors (109) and (110).
) (see Figure 2) cross the X-ray tube 0 (
Both cylinders 0υ (dark) are controlled to move the detectors (]09) and (110).

As a result, even if the size of the tire (T) changes, the tire cord arrangement can always be inspected at the best position. The detectors (109) (110) are the sixth detectors (109) and (110).
As shown in the figure, the receiver includes a slit (131) that converts the incoming X-rays into a thin beam, a scintillator (132) that converts the X-rays that have passed through the slit (131) into light, and a scintillator (132) that converts the X-rays into light. and a detection circuit (133) including a photomultiplier tube that converts the signal into an electrical signal. Again, in FIG. 1.2, a motor (142) is attached to the lower part of the frame (2) via a support stand (141), and this motor (142) is equipped with a reducer (14).
3) are connected. The roller (144) fixed to the output shaft of the reducer (143) and the roller (231 (Foundation)
The bell) (145) is passed and the motor (
142) rotates at a constant speed and in the same direction. One end of an arm (146) is rotatably connected to the upper part of the central beam (3), and the other end of this arm (146) is connected to a roller f231 (a tire (T) placed on the roller f231). (c) (24
) is rotatably supported.

(148) is a vertical cylinder attached to the upper part of the frame (2), and the tip of the piston rod (149) of this cylinder (148) is connected to the center of the arm (146). And presser roller (147)
When the motor (142) is operated while the tire (T) is pressed against the roller C231 (241), the tire (T) rotates at a constant rotation speed without vibration in the holding position (G) shown in Fig. 1. Rotate around the axis.

The motor (142), reducer (143), roller F231 (144), belt (145), arm (146), and presser roller (147) collectively constitute the rotation mechanism (150). Here, Laura (231
It is also used as the holding mechanism 63). A vertical cylinder (151) is installed at the bottom of the frame (2) on the roller (231 side) from the midpoint between the rollers (A), and a piston rod (152) of this cylinder (151) protrudes from the tip. A block (153) is attached. (154
) is a swingable stopper plate, and when the tire (T) is being carried in, this stopper plate (154) is positioned at the inclined position (H) shown by the imaginary line in Fig. 1, so that the tire (T> rolls out). At the same time, when transporting the tire (T), the tire (T) is placed in the horizontal position (J) shown by the solid line in the same figure.
) to the next process. Again, in Figure 6, (],
61) is a measuring mechanism connected to the detectors (109) (110), and this measuring mechanism (161) is connected to the tire (T).
X detected by detectors (109) and (110) during rotation of
The cord arrangement of the tire (T) is measured based on the strength of the line, and a pass/fail determination of the tire (T) is made.

Next, the operation of one embodiment of the present invention will be explained.

First, a tire (T) of a certain size is carried into the determination mechanism (4) by a carrying device (not shown), and placed at a mounting position (A).
The tire (T) is placed on a mounting table (η) located at , the moving members (13) (+4) are closest to each other, and the optoelectronic switch αηα barrel is in the vertical plane near the axis of rotation of the tire (T) (
P) located above.

Next, the drive means α6) is operated to rotate the screw shaft (circle).As a result, the moving members Q3) (I) are separated from each other while being guided by the guide rod aυo2)K. On the other hand, as the screw shaft a rotates 90 times, pulses are sent from the pulse encoder to the pulse counters for measuring the inner diameter and outer diameter, and the number of pulses is integrated in each pulse counter. Then, when the photoelectronic switch α7) reaches the bead portion (C) of the tire (T) and is blocked from light, the pulse supply to the inner diameter measuring pulse counter is stopped. By this, the tire (T)
The inner diameter of is measured. On the other hand, the pulse counter for measuring the outer diameter continues to integrate, and when the photoelectronic switch (17) 08) receives light passing through the tread of the tire (T), the pulse supply to the pulse counter for measuring the outer diameter stops. be done. Thereby, the outer diameter of the tire (T) is measured. Then, the size of the tire (T) is determined by measuring the inner and outer diameters of these tires (T), and information regarding this size is sent to the moving mechanism (121). When the size determination of the tire (,T) is completed, the tire request signal is sent to the cylinder (9).
) and the piston rod (10) protrudes.

As a result, the mounting table (7) swings from the mounting position (A) to the substantially upright position (B), and the tire (T) is sent onto the guide plate (c). After the tire (T) rolls on the guide plate (25), it collides with the stopper plate (154) at the inclined position (H), stops rolling, and is held by the roller (231 (24+). ) during the transfer, tires (T)
is held between guide rollers (C) (2ω) so it will not fall over.Next, actuate cylinder t3gJ (50 to protrude piston rod C39) (5υ), move bar G3 (G) (361 (481) (closes). This centers the tire (T) on the rollers (23+(24). In this way, the tire (T) is moved by the upper and lower guides (4υ(30)). No C-1 X-ray-IF that moves in the rotational axis direction and centers
-Use Q [X), detection R? i (109) (110)
It is not necessary to move the tire (T) in the direction of the rotational axis in accordance with changes in the width of the tire (T) and changes in the holding position (G). Next, actuate the cylinder (148) to protrude the piston rod (149), press the presser roller (147) against the tire (T), and press the tire (T) and roller f23.
1 (increase the contact pressure with the motor (24+). Next, increase the contact pressure with the motor (14+).
2), and the roller (2) is activated via the bell) (145).
3) Rotate (goods) in the same direction at a constant speed. As a result, the tire (T) rotates around its rotation axis at a constant speed. At this time, the movement bar (351 (361 (48)
49) mini roller (37) (4η is the tire (T)
The tire (T) does not vibrate because it rolls into contact with the sidewall of the tire (T). Next, operate the cylinder (63) of the bead opening mechanism (6I) to protrude the piston rod, and open the opening claw Cl5) (76) to the tire (T).
) toward the center. And open nails (
When the midpoint between 751 (76) reaches the equatorial plane of the tire (T), the operation of the cylinder (6) is stopped.Next, the cylinder (59) is activated to protrude the piston rod (60) and move up and down. The frame, f62) is lowered.The descent of the elevating frame (621) stops when the opening claw (7ωσe) contacts the bead (C) of the tire (T).Next, the cylinder (7υ) is activated. and the piston rod (7
21 to separate the opening claws (751ff6) from each other. At this time, disk ff? ) (78) is both bead parts (
C) outward to widen the bead spacing.At this time, since the opening claws (751 (7G) are rotatably supported by the holders (73) and (74), do not adversely affect the tire (T). No. Simultaneously with the operation of the cylinder (63) of the bead opening mechanism (61), the cylinder (9υ) of the moving mechanism (121) is operated to protrude the piston rod (921).As a result, the elevating frame (93) is lowered. , this descent stops when the X-ray tube 0 (T) can enter the rim space of the tire (T). Next, the cylinder (9
8) to protrude the piston rod (99). As a result, only the X-ray tube Q, that is, the detectors (109) and (110) remain stationary and move along the rotation axis of the tire (T). At this time, the radiation port (101
) moves along the movement route (E). Then, as mentioned above, the intersection area (
D) is located on this movement path (E), so by simply moving the X-ray tube O (to) and making the radiation port (101) reach this intersection area (D), the X-ray tube Q [ 1
The relative positional relationship between the detector (109) and the detector (110) can be determined. 1. This intersection area (D) is the tire (T)
Since it is located on the equatorial plane of
The positional relationship in the rotational axis direction with respect to the tire (T) can be simultaneously determined by the above operation. Then the cylinder again (9υ
Activate the piston rod (9) to protrude the elevating frame (931, X-ray tube 0 (to), detector (109')
) (110) to a single weight, and remove the X-ray tube (b).
into the tire (T). At this time, the bead part (C) is pushed open by the bead opening mechanism ■, so
Even if the wire tube 0 (to) is large, it can be easily inserted into the tire (T). Then, the best part of the tire (T) to be measured is determined based on the information regarding the size of the tire (T), and the radiation port (101) is located at this part.
) and the detectors (109) and (110) intersect, the operation of the cylinder (9υ) is stopped.
The measurement site of the tire (T) changes depending on the size of the tire (T), but in this invention, information regarding the size of the tire (T) is taken in from the determination mechanism (4), so the measurement site is always tire (T) can be measured. Next, the cylinder (107) operates, the piston rod (108) protrudes, and the detectors (109) and (110), which had been retracted to avoid interference with the tire (T), approach the tire (T). , measurement preparation is completed.

In this state, the cord arrangement of the tire (T) is inspected, and the principle of this inspection is shown in Figures 6 and 7.
) tc) (di This will be explained using the diagram. Now, the tire (T
) rotates and the measuring part of the tire (T) moves in the direction of the arrow.
X-rays emitted from the radiation port (101) in (G) pass through the tire (T) and are narrowed down by the scintillator (132) of the detectors (109) and (110).
) is converted into light by This light is converted into an electrical signal by a detection circuit (133) including a photomultiplier tube.

Here, the amount of attenuation of the X-rays differs depending on whether the X-rays are transmitted through the rubber portion (K) of the tire (T) or when they are transmitted through, for example, the steel cord portion (L). As a result, the seventh
(a) As shown in the figure, when the X-rays pass through the rubber part (K), a signal of a predetermined value is output from the detection circuit (133), and when the X-rays pass through the cord part (L) In this case, approximately zero newsletters are output. And this detection circuit (1
The output from 33) changes every moment depending on the rotation of the tire (T). Next, the output from this detection circuit (133) is input to the measurement mechanism (161);
61), the following operations are performed.

First, the signal is compared with a preset threshold level, and when the signal value is greater than the level, an H level signal is output, and when the signal value is smaller than the level, an L level signal is output. The waveform in Figure a) is shaped into the waveform in Figure 7(b). Next, the H gate, which opens only when an H level signal is input, and the L gate, which opens only when an L level signal is input, are sent from the high frequency pulse generation circuit, and the H gate and L gate are opened. The passing pulses are counted by separate pulse counters.

FIG. 7(c) shows the pulse waveform that has passed through the L gate, and FIG. 7(d) shows the pulse waveform that has passed through the H gate. The pulse counters are reset when no pulse is input for a certain period of time, so the number of pulses in each pulse group is counted each time a pulse group is generated. 2. When the number of pulses in a group of pulses (which pass when the X-ray passes through the cord) that has passed through the L gate is greater than the number of pulses corresponding to the diameter of the cord portion (L), the tire (T ), it is determined that the tire is defective because the codes may overlap. On the other hand, ■ A group of pulses that have passed through the 1 gate (pass when the X-rays are passing through the rubber part)
When the number of pulses is greater than the number of pulses corresponding to the prescribed code interval, K is also determined to be a defective tire because the cords of the tire (T) may be too far apart. In this way, when the cord arrangement inspection of the tire (T) is completed, the detectors (109) (110), the X-ray tube θ, and the bead opening mechanism return to their original positions by the reverse operation to that described above.

The rotation of the tire (T) also stops, and the upper and lower guides (A11 (301) open and the presser roller (14
7) separates from the tire (T). Next, the stopper plate (
154) from the inclined position (H) to the horizontal position (J) so that the tire (T) can be ejected.
1) to protrude the piston rod (152). As a result, the protruding block (153) is attached to the tire (T).
is pushed out toward the stopper plate (154), and the tire (T) rolls on the stopper plate (154) and is sent to the next process. The above is one cycle of tire cord arrangement inspection work focusing on one tire (T), and this cycle is repeated thereafter.

In the above-mentioned embodiments, an X-ray tube was used as the radiation source, but a radioisotope that emits r-rays or the like may also be used.

As described above, according to the present invention, the radiation source and the detector can be accurately moved to specified positions according to the size of the tire, so that accurate inspection can be performed.

[Brief explanation of drawings]

FIG. 1 is a schematic front view showing an embodiment of the present invention, FIG. 2 is a right side view thereof, and FIG. 3 is a right side view showing a lower guide.
Fig. 4 is a sectional view showing the tip of the bead opening mechanism, Fig. 5 is a right side view of the X-ray tube and the vicinity of the detector, Fig. 6 is an explanatory view explaining the detection operation, and Fig. cl
(Figure d1 is a waveform diagram. (4)... Judgment mechanism (53)... Holding mechanism 0 time... Radiation source (Xm tube) (109) (110)... Detection Vessel (121)...
Moving mechanism (150)...Rotating mechanism (161)...
Measuring mechanism (T)...Tire patent applicant Brideston Tire Co., Ltd. Agent Patent attorney Tao 1) Toshio

Claims (2)

[Claims] (1) A determination mechanism that determines the tire size, a holding mechanism that holds the tire in a fixed position, a radiation source that emits radiation, and a radiation source that receives radiation from the radiation source that has passed through the tire. a detector that detects the intensity;
a moving mechanism that moves the radiation source and the detector to a position where a straight line connecting the radiation source and the detector intersects a measurement site of the tire determined based on the determination result of the determination mechanism, and a position where the tire is held. A tire cord arrangement comprising: a rotation mechanism that rotates the tire around its rotational axis; and a measurement mechanism that measures the tire cord arrangement based on the intensity of radiation detected by a detector when the tire rotates. Inspection machine. (2) The moving mechanism includes a first moving mechanism that moves the radiation source and the detector together in the radial direction of the tire, and a second moving mechanism that moves only the radiation source in the rotational axis direction of the tire. The tire cord arrangement inspection machine according to claim 1, wherein a movement path of the radiation source by the operation of the second movement mechanism is located within the field of view of the detector.