JPS59200955A - Flaw detector - Google Patents

Abstract

PURPOSE:To move a probe to a shunting position precisely by shunting the probe by rotating a supporting arm by impact force at the engagement of a balance weigt with an engaging member. CONSTITUTION:Since the probe is shunted by rotating the supporting arm 13 by the impact force at the engagement of the balance weight 14 with the engaging member 16, only a piston in an air cylinder 11 is a sliding part. Since there is no influence due to centrifugal force, especially influence due to the increment of frictional force, the probe 10 is precisely moved to a shunting position separated from a material S to be tested.

Description

[Detailed Description of the Invention] The present invention is a flaw detection device 1 equipped with a rotating globe that can smudge the surrounding corners of surface-visiting circles, wire pits, steel pipes, etc., in a non-welding manner using a vortex type. I/I am concerned.

After rolling, the round steel bar with a diameter of 50 rnmφ or less is rolled into a 11 - It becomes necessary to use a tape measure on the ridge where flaws were detected. Also steel pipe'-9
・The general method is to perform flaw detection after cooling.
In such a method, defects may occur due to defects in the manufacturing installation, or in this case, a large number of defective products may be produced due to a delay in detecting defects. For this reason, it is efficient to perform the deep field immediately after the end of the deep rolling process, and the flaw detection results are immediately transmitted to the processor control d11 loop. It is efficient and desirable to incorporate it.

As a device for detecting flaws at the same temperature tEv during rolling of a steel bar, the probe is rotated to detect the entire surface of the bar once at a speed of 1 at 1 bath 1). Probe-type hot water exploration device: It is efficient to use a. However, in 1H of the i-yun probe type, the material to be tested was being hot-rolled, had low li and lil properties, and was in a soft state, so gloves, etc. were placed on the material to be tested. Connection 11
If it is left alone, a flaw will appear on its front face. For this reason, during flaw detection, it is necessary to make the glove follow the bending, shaking, etc. of the specimen to prevent the probe from coming into contact with the specimen. In addition, the leading and trailing ends of the material to be tested are νJ,
Since it has a self-harmful shape (1 bucket diameter, Kaeri-dera) due to e-Kyo etc., from now on, the rear end will come in contact with the probe and break ii4
Remove the gloves when passing the front and rear ends so that there is no L.
It is necessary to make it I.t.

A rotary probe type eddy current deep flaw device (FLF) generally has a rotating drum arranged in the transport area of the material to be inspected, and a double J-shaped probe attached to the inner surface of the rotating drum.

An example of a conventional rotary probe type lobe support first groove is shown in FIG. In the figure 4
is the rotating drum placed on the rotating drum 4 for the pumping of the engine, and lO is one of the two probes installed at the opposing 2nd position f& of the rotating drum 4. The other probe is centrally symmetrical to the probe 10 shown in the drawing, and is attached to the inner periphery of the rotating drum 4 by a punch. The probe 10 is connected to the rotating drum 4 with a supporting shaft 51 extending in the direction of the rotating drum 4.
It is attached to the central law light 1'71+, and the support 1ii
The base ν1 of the I++ 51 is slidably mounted on a circular case 52. Case 52 (... 40 rotary drums are rubbed on a kite rail (not shown) in the same way)
Can be installed freely. The VC on both sides of the case 520 supports the forward and backward directions of each piston rod lla and lla +1
Air cylinders 11 and 11 parallel to III+ 51 are respectively fixed to the inner circumference of the drum 4, and the piston rods of the air cylinders 11 and 11 are connected to each other.
and the valley side of the case 52 are connected by connecting rods 53.58, and by moving the air cylinders 11.11 together, the entire booth 52 is moved along the guide rail in the radial direction of the rotating drum 4, and the probe 10 A retracted position is located away from the center of the rotating drum 4, and a deeply damaged position 11a is located close to the center of the rotating drum 4. In addition, in the figure,
54 is a slide bearing, 55.55 is an electromagnet installed in the case 52, and 56 is a support 1IIlf15.
Permanent stone I installed in the middle of 1, 57 is support 1i
The probe 10 is urged in the direction of the specimen S against the centrifugal force caused by the rotation of the rotary drum 4.

In addition, the part of the support 51 on the opposite side from the end part 1≦ on the installation side of the profile 10 is hollow, and air is supplied to the hollow part to direct the air from the probe 10 to the test material S. The flaw detection surface of the prog 10 sprayed on the surface of the probe 10 is placed a predetermined distance away from the material S to be tested.

IV'r Karu Ili? In the support mechanism of the jl,
Since the drum 4 rotates at a commercial speed, the case 52
, a large centrifugal force is applied to the air cylinder 11, and this centrifugal force is applied to the dead part between the case 52 and the guide rail (not shown), and to the sliding parts of the air cylinder 11. (r#) The sewing force increases and is reduced by 1. Therefore, turn the glove 10 qu, center f) Mll (1iA4 retracted position, young, <+:
In order to move the probe 1o to a deep position close to the center of rotation Q, a large amount of force is required.
1) It is extremely difficult to move the specimen to the retracted position 1), and it was impossible to prevent the rear end of the specimen S from coming into contact with the probe 10.

A glove support 4a IR as shown in FIG. 2 is also being considered. This means that the probe lo is placed at the tip of the support arm 64 extending in a direction perpendicular to the probe curve,
The middle of the support arm 64 is a slide provided on the side of the specimen S! 111J block 61 supports the skeleton, 11 blocks 61
is freely movable on a guide rail 62 attached to the rotating drum 4, and the force guide rail 62 is a piston rod l of the air cylinder 11 whose axial length direction is parallel to each other.
It is attached to the tip of the piston rod lla, and the sliding block 61 is moved by the advancing and retracting movements of the piston rod lla, and the support arm 64
By making the entire structure parallel to each other, the globe 10 is placed at a retracted position 11a separated by νB from the material S to be inspected, which is a close flaw detection position. Note that 63 is a balance weight for maintaining balance with the probe 10, and air is blown from the flaw detection surface of the probe 10 towards the test material S and the test material S. The probe IO is made to follow the gap +ltS by keeping the separation distance (lift-off) from the probe 10 constant.

In such a support mechanism, like the support mechanism shown in FIG. 1 described in HQ, when the rotating drum 4 rotates, the guide rail 62
The thick friction force between and the parallel J block 61 increases,
Probe 1O is moved to the retracted position and deep injury position 1a.
However, one problem could not be resolved: the test material S came into contact with the probe 10 and the probe 10 was damaged.

The present invention has been made in view of the above circumstances,
472 of the rotary probe type flaw detection device 11' with 1'J1ε to ensure that the probe is retracted 11 even at both ends passing through the end of the object to be inserted, and that the material to be inspected is reliably squeezed. For the purpose of providing.

The tree projector will be described in detail below based on drawings showing examples thereof.

Figure 3 is a survey diagram of the flaw detection device according to the present invention, and Figure 4 is a stop diagram thereof. The apparatus of the present invention performs final rolling 4. Send it from the paper! It is arranged on the pedestal 1 so that the axis of the Kizuko Akira device coincides with the pass line of the material S to be inspected, and the material S to be inspected is conveyed in the direction of the white arrow IIc. . A cylindrical housing 2 is fixed on the top surface of the pedestal l, and a motor 3 with 2:tf and variable speed IJJ functions is mounted on the top surface.
The output shaft is directed toward the downstream side in the conveyance direction. On the lower fnU side of the housing 2 in the transport direction, a rotary drum 4 is rotatably mounted concentrically with the housing 2, and the outer periphery of the first plate drum 4 on the housing side,
The rotation of the motor 3 is transmitted to the rotary drum 4 by a rotated V-belt 6 between the output of the motor 3 and the pulley 5 attached to the plate drum 4. includes a pair of deep wound probes 10, 10, which will be described later.
The air cylinders 11, 11 I for the IBUJ are attached to the pivot. Its function is a signal transmission device 7 for transmitting and receiving the signal No. 41 to and from the probe 10 in the drum 4, which is a slip ring, a brush, or a constant.

The IJT sub-volume and Makoto's Eiden Trance Temple are used.

Further, 8 is a case housing an air seal etc. for supplying air to the air cylinders 11, 11, etc. in the rotating drum 4. Air is supplied from an air supply port 81, and a pressure pulley attached to the top surface of the case is provided. At 82, the pressure inside the seal can be checked.

Stroke. FIG. 5 is an enlarged front view of the rotating drum 4.

In the figure, 10.10 is a prologue, and each prologue 1
0.10 is attached to the center side tip of a support arm 18.18 extending in a direction perpendicular to the conveying direction, with each detection section facing each other symmetrically with the center of the plate drum 4. In addition,
In Fig. 5, the upper probe xovi is close to the test material S, the probe position is 11M, and the lower probe lO is 0 so).
・More than Batou S (shown in the retreating position II separated by L. The support 4' arm 13.13 is attached to the block 12.12 on which the first drum 4 is attached. 14 nodes, l, spaced apart from the center of the rotating drum 4.
A cylindrical balance weight 14.14 is mounted on the 11th column.

On the outside of the block 12.12 is a piston rod lla extending perpendicularly to the axial direction of the support arm 13.

11af: Advance and retreat! An air cylinder 11.11 is provided with a pressure of 1η, and the piston rods 11 and 11 are connected to the piston rods 11 and 11.
Move in and out of IW! Balance way at 1ilJ)1
4.14 A retaining member 16 whose tip is curved to retain
．． 16 is inu-tonori-i-chopped.

6 Air cylinder 11.11 The air supplied from the air seal in the case 8 mentioned above is pumped by the solenoid valve 17゜I7, and is supplied and discharged by valving the air hoses 18, 18.18゜18. From the valve 17.1'l, the air hose 19.19, the blocks 12, 12, the air hoses 21, 21, and the support F.
fL1? Follow inside L 13.18 and probe 10.10
This air is used to cool the 6 probes 10.10 and to prologue the air.

10.10 from the detection surface to the test material S, and set the probe 10.10 on the track 9 etc. of the test material S, keeping the distance between the test material S and each probe 10.10 constant. 411. It is designed to follow the actual pattern.

The block 12.12 pivoting each support arm 18.18 is
Support arm la, isO Sliding that enables parallel translation Uy in the axial direction and in the direction perpendicular to the axis! A block 12.1 is provided at one end (piston rod lla tip 1!++ of the air cylinder 11).
The knobs 23.23 for immediate use in adjusting the morning and morning adjustment of No. 2 have been turned over by a large amount, and by rotating the if & knobs 23.23, the support arms 13 installed on the jib block 12.12 and each block 12.12 are removed. .18, the probe 10.10 is moved in parallel, and the amount of adjustment is displayed at a pitch of 0.1 m by the kakuntas 24, 24. 25.25 is a relay box for transmitting and receiving signals between each probe 10.10 and the above-mentioned trust transmission device α7, and 26.26 is a relay box 25.
．． This is a cable for the II-j sender from 25 to valley prologue 10.10.

Narrative +4. + <11" 6 The previous work of the final device 14, which was completed, will be explained based on Fig.
．． 12 multiplied by 4, probe 10.10 probe deviation 1
[I sent 4 grains of rice to him] I let Tato, the 1st child of moxibustion 10 AS, attend the ↑h class in the evening. Also, the air cylinders II and 11 are in their piston rond lla & retracted state (〉(561 ward (a)
The rotary drum 4 is rotated by driving the motor 3 by one person. - The tip of the test material S that jumps out from the final rolling roll ν1) 1 vertically is V from the hot plate detector, and the tip of the test material S is blow 10
．． When the 10 arrangement position 1 self 1 is passed, the air cylinder 1
1. Advance the piston rods lla and lla of 11 to separate the engagement r;
H'4 hot water level i which made 0 close to A・m 47I'S
4) Detect the scratches on the subject 4U'S.

Similarly, the rear end position of the specimen S is also determined by the hot piece detector, and the rear Ria portion is located at a predetermined position immediately in front of the rotating drum 4.
When i''iV is reached, the air cylinder 11.11 is activated to force the piston rods lla, lla into the sudden position Vζ.Thereby, the piston rod 11a.

11a is retracted, and the 1st thread base at the tip thereof is moved to the 16th thread.
16 suddenly engages with the outer periphery of the balance way) 14.14 and forces it to move toward the piston rod lla, lla retraction side, so that the supporting j corpses 13, 13
2゜Time centered around the 12 cardinal branches! lνJ, probe 10
．． 10 in the direction V separated from the material S to be tested (1) Move the probe 10. j+α).

In this case, the probe IO outputs one air from its flaw detection U, and the piston rod ll of the air cylinder 11
Since a and the balance weight I4 are spaced apart by a distance tU, the test material S and the probe lO form a box separated by a predetermined distance RM, and follow the curved temple of the test material S. The contact and impact of the curved surface of the test material S to the probe 10 is alleviated.

In the device of the present invention, the retraction of the glove 10 is caused by the engagement of the balance weight 14 and the 16th engagement portion 1 by the retraction of the piston rod lla of the air cylinder 11. (Since the support arm 13 is fully activated by VC from C, the 11 times of sliding contact is only with the piston in the air cylinder Il, and the centrifugal force causes the rotation of the arm to move from 1 to QJ to i to QJ. j@Increase in force V Without understanding the influence, the probe lO is νiil from the test material S on the surface of the surface,
i'i+'s L becomes the retracted position 11°t.

As detailed above/-c, the tree 15.1 rotates the probe with circular cross section iA'(') 1iiJ in the exenteration device a, and he 1 rabbit] A's 16] A rotating body that rotates around the surrounding area, a support arm that is supported by the rotating body and pivots the probe that is attached to the specimen, and a static support 11 that allows the probe to be removed from the specimen. - [The probe is reliably and smoothly moved to the retracted position, since the support arm 13 is moved completely and the support arm 13 is moved completely to separate the probe from the retracted position.
The advantage is that there is no damage to the prong, which is of course disappointing.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of a conventional hot water extraction device, Fig. 2 is a front view showing another example of a conventional exploration lagoon arrangement, and Fig. 3 is a schematic front view of a conventional hot water extraction device.
31J Table 11: First view of the circle of death, Figure 384 is its front view,
FIG. 5 is a positive 1111 view of the 11th drum of the device of the present invention;
Figure 6 (A) and (B) are the 5th part of the device 1-t.
Figure 1 of the work 'J-J'. 3...Motor 4...Rice drum io...Probe 11...Air cylinder Ila...Piston rod 13...Support arm 14...Balance weight 1
6...A Thread joining member S...Examined person d[Output I shell person Shobankin〃Katsuko Kaitai Shiki Company and 1 representative J
P-physicist Noboru Kono Dog figure 2 1 Kono 3 figure

Claims (1)

[Claims] 1. In a flaw detection device that widens the probe once along the curved surface of the specimen, the circumference of the specimen is
A support arm is attached with a probe which is pivotally supported by the rotary body and has a probe attached to it; Fal from the test material
l:' A hot water exploration device with a patented system that rotates the supporting arm to make IrtA and a device that rotates the support arm to make IrtA.
'i.