JP3012018B2 - Tubular body fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for fixing a tubular body, and more particularly, to an apparatus for fixing a tubular body when inspecting a tubular body such as a laminate tube.

[0002]

2. Description of the Related Art Hitherto, as a method for inspecting the inner surface of a cylindrical body such as a laminate tube, particularly a squeezed inner bottom surface, for defects such as scratches and dust, a method in which a human inspects visually is mainly used. Was.

[0003]

However, in this method, the efficiency of inspection is limited, and even if other manufacturing processes of the laminated tube are automated and accelerated, the overall speed is limited in this inspection process. There was a problem that complete automation could not be achieved. An object of the present invention is to provide a tubular body fixing device for fixing and aligning a tubular body in an apparatus for imaging and inspecting the inner bottom surface of the tubular body.

[0004]

According to the present invention having the above object, a first holder for holding one end of a cylindrical body and aligning the one end of the cylindrical body, and an open cylindrical body are provided. The second is to hold the end, align the other end of the cylindrical body, and correct the shape.
And a holder.

[0005]

According to the present invention, the first holder for holding one end of the cylindrical body holds the cylindrical body, and the pin is provided from below the hole formed in the first holder. To correct the shape of the lower end of the cylindrical body. Thereafter, the other end of the cylindrical body is held from above the cylindrical body, and at the same time, the shape of the other end is corrected. In this shape correction, one end of the cylindrical body is guided by a guide surface provided on the second holder, and the cross section is corrected so as to be a perfect circle. Thereafter, an inspection device is inserted into the inside of the tubular body from above, and the inner surface and the outer surface are inspected.

[0006]

Next, a preferred embodiment of the present invention will be described with reference to the drawings. The present embodiment discloses an example in which a cylindrical body to be imaged or inspected according to the present invention is a laminated tube . A configuration of a tubular body inspection device having a tubular body fixing device according to the present invention will be described with reference to FIGS. 1, 2, and 3. FIG. This cylindrical body inspection device 2 (hereinafter referred to as
Also called "Rotary tube inspection machine (equipment) 2"
U. ) Indicates a base 35, a motor 36, a rotating shaft 37,
A rotation inspection table 12, a cam 46, a cam follower 47,
A holder elevating rotary shaft 48, a centering jig 38,
A tube inspection device 39, a camera selector 43, a mixer 44, an antenna unit 45, a rotating resolver 49,
A stationary resolver 50, and a light quantity checker 51. Here, the motor 36, the rotation shaft 37 and the rotation inspection table 1
Reference numeral 2 denotes a transfer unit. In-tube inspection device 39
Constitutes imaging means. Further, the above constitutes the cylindrical body bottom surface imaging device. Further, the antenna unit 45 constitutes a signal transfer unit .

A fixed shaft (not shown) is provided on the base 35, and a tubular rotary shaft 37 is provided so as to share an axis with the fixed shaft and to cover the fixed shaft. The rotating shaft 37 is configured to be driven to rotate by a motor 36. In addition, a rotary resolver 49 and a fixed resolver 50 are provided to measure the angular position between the fixed shaft and the rotating shaft 37. The rotation inspection table 12 is connected to a rotation shaft 37,
It rotates with the rotation of 7. A holder H can be placed on the rotation inspection table 12. The holder H is moved up and down and rotated by a holder elevating rotary shaft 48. The elevating operation of the holder elevating rotary shaft 48 is performed by a cam 46 and a cam follower 47 provided at the lower end of the holder elevating rotary shaft 48. The squeeze port side of the laminate tube T can be inserted into the holder H. A centering jig 38 for holding the tail side of the laminate tube T in a circular shape is supported above the holder H.

Next, the tubular body fixing device will be described in detail. The cylindrical body fixing device includes a holder 60 for positioning one end of the cylindrical body as a first holding tool, and a centering jig 3 as a second holding tool for holding the other end of the cylindrical body.
8 The holder 60 has a hole 62 in the lower part, a centering bar 63 is provided in the lower part of the holder, and a cam follower 64 is attached to the lower end of the centering bar 63, and the cam follower 64 is a cam follower. The centering bar 63 moves up and down while moving on the center 65.

On the other hand, the holding portion 61 of the centering jig 38
Has a guide surface 65 inclined inside the cylindrical portion, a first cylindrical surface 66 continuous with the guide surface 65 is formed, and a horizontal plane is formed between the first cylindrical surface 66 and the innermost diameter portion 67. Step 68 is formed. The holding portion 61 is supported by a support 80, and the support 80 moves up and down.

As shown in FIG. 2, an in-tube inspection device 39 for inspecting the inside of the laminate tube T includes an in- tube insertion section 40, a borescope 41, and a CCD camera 4.
And 2. The borescope 41 includes a borescope main body 52 and a borescope insertion section 53.
The tube insertion section 40 includes a borescope insertion section 53, a light emitting diode section 54, and a photo sensor section 55. Of these, the borescope insertion section 53 mainly inspects the inner bottom side of the laminate tube T in the drawing, that is, the squeeze port side, and the light emitting diode section 54 and the photo sensor section 55 mainly inspect the inner side surface of the laminate tube T. The rotary tube inspection machine 2 is provided with twelve in-tube inspection devices 39, and is also provided with twelve cam followers 47 and twelve holder elevating rotary shafts. These numbers are not limited to 12, and may be other numbers. Each in-tube inspection device 39 is connected to a camera selector 43 by a lead wire, and the camera selector 43 is connected to a mixer 44. The mixer 44 is connected to the antenna unit 45. The antenna unit 45 includes a determination unit.
It is connected to a discriminating device (not shown) .

Next, the operation of the rotary tube inspection machine 2 will be described with reference to FIGS. 1, 3 and 4. In FIG. 1, a laminate tube T is placed on a holder H and transported to a star wheel 11 by a transport conveyor 9 or the like. The star foil 11 holds the laminated tube T together with the holder H together with the rotary inspection table 1 of the rotary tube inspection machine 2.
Take on 2. After being taken in on the rotating inspection table 12, the holder H moves up and down according to the cam curve of the cam 46 as the holder elevating rotary shaft 48 moves up and down. At this time, the centering bar 63 rises from below according to the cam curve of the cam 46, and is inserted into the hole 62 below the laminate tube T via the hole 62 to perform centering. At this time, the laminate tube T rises, and the centering jig 38 as the second holder falls. The end E of the laminate tube T hits the guide surface 65 of the holding portion 61 by these two relative movements. Fig. 4 (a) shows the laminate tube T
In the case where the laminate tube T is curved as described above, it is guided by the guide surface 65 and guided in a true circle state until the end of the laminate tube T hits the step 68 as shown in FIG. Then, an intermittent rotating motion is performed about the axis of the holder elevating rotary shaft 48. That is, the rotation is performed while revolving in the rotation direction of the rotation inspection table 12 .

As described above, by holding the edge E of the cylindrical body in a circular shape, it becomes easy to insert an inspection instrument into the inside. In addition, although the laminate tube T has been described as an example, any other flexible tubular body may be used.

[0013]

As described above in detail, according to the present invention, the first holder for positioning the cylindrical body while holding one end of the cylindrical body, and the other end of the cylindrical body are held to correct the shape. The presence of the second holder allows the accurate inner surface inspection to be always performed. Further, when the outer surface is inspected, the cylindrical body is held in a perfect circle, and the distance from the outer surface detecting device is constant, so that an accurate detection value can be calculated.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a rotary tube inspection device having a tubular body fixing device of the present invention.

FIG. 2 is a side view of a rotary tube inspection device having the tubular body fixing device of the present invention.

FIG. 3 is a sectional view of the tubular body fixing device of the present invention.

FIG. 4 is an operation explanatory view of the tubular body fixing device of the present invention.

[Explanation of symbols]

 Reference Signs List 60 holder 61 holding part 62 hole 63 centering bar 64 cam follower

Claims (1)

(57) [Claims] A first holder that holds one end of the cylindrical body and aligns one end of the cylindrical body; and a first holder that holds the other end of the opened cylindrical body, and the other end of the opened cylindrical body. A cylindrical body fixing device including a second holder for performing alignment and shape correction.