JPH084600Y2 - Appearance inspection jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a visual inspection jig, and more particularly to a visual inspection jig used when inspecting the external appearance of an inspection object.

[Prior art and its problems]

Generally, this type of appearance inspection jig is configured as shown in FIGS. 6 and 7.

That is, the appearance inspection jig shown in FIG. 6 and FIG. 7 is deformed by pressing the rotating member 11 that holds and inspects the inspection object 16 and the surface of the inspection object 16 that is sandwiched by the rotation member 11. And a pressing member 17 for causing the pressing.

The rotary member 11 has a disk-shaped chuck 12, a rotary shaft 15 integrally connected to the chuck 12, and a rotary shaft 15
The chuck 12 is rotated together with the rotation shaft 15 by the power from the drive source.

The chuck 12 has a disk shape, and a hole 14 for positioning an object 16 to be inspected is formed in the center of the chuck 12, and the hole 14 is clawed from three radial directions toward the center thereof. 13, 13, 13 are provided so that they can appear and disappear, and the holes
After positioning the inspection object 16 inside the 14, the nails 13, 13, 13
The object to be inspected 16 can be clamped by tightening toward the center of the hole 14.

The pressing member 17 has a rod shape and the chuck
It is provided so as to be able to come into contact with and separate from the surface of the inspection object 16 sandwiched by 12, and at the time of contact, the surface of the inspection object 16 can be deformed so as to be pushed and spread.

In this case, various objects can be used as the object 16 to be inspected, but in general, an object made of an elastic body such as rubber that can be deformed by the pressing by the pressing member 17 is targeted.

Further, an inspection member 18 is provided above the inspection object 16, and the pressed portion of the inspection object 16 is projected on the inspection member 18.

Then, in order to perform the appearance inspection of the inspection object 16 using the appearance inspection jig configured as described above, first, the rotating member
The object 16 to be inspected is inserted into the hole 14 at the center of the chuck 12 of 11, and the objects 16 to be inspected are clamped by the chuck 12 by clamping the claws 13, 13, 13 from three directions.

In this case, the claws 13, 13, 13 are tightened so that the rotation axis of the chuck 12 and the axis of the inspection object 16 are aligned with each other.

Next, the pressing member 17 located above the object 16 to be inspected is brought into contact with the surface of the object 16 to be inspected to deform the surface of the object 16 to be pushed and widened, and a drive not shown Activate the source and rotate the chuck 12
The inspection object 16 is rotated integrally with the.

By this, the pressed portion of the inspection object 16 is sequentially moved in the circumferential direction, and at this time, by visually observing the pressed portion of the inspection object 16 projected on the inspection member 18, the appearance inspection of the surface of the inspection object 16 is performed. It is designed to find defects such as scratches and cracks.

However, in the conventional visual inspection jig configured as described above, since the inspection object 16 is pressed by the pressing member 17 from only one direction, it is strongly clamped by the chuck 12. However, as shown in FIG. 8, the axis of the object 16 to be inspected may deviate from the axis of rotation of the chuck 12 and be eccentric due to the pressing by the pressing member 17.

As a result, it becomes impossible to apply a constant pressure to the inspection object 16 and it becomes impossible to deform it at all as shown in FIG. The inspection cannot be done.

In addition, defects such as scratches and cracks generated on the inspection object 16 are
Depending on the molding method, in addition to being formed in the circumferential direction of rotation of the inspection object 16, it often occurs at a certain angle with respect to the circumferential direction. As a result, if the pressing member 17 presses the inspection object 16 in parallel with the axis of the inspection object 16, the defect may not be found.

This invention solves the problems of the conventional ones described above, and can always apply a constant pressure to the surface of the object to be inspected, and the object to be inspected over the entire circumference at all times. It can be deformed by a constant pressure, so that
It is an object of the present invention to provide a visual inspection jig that can always perform visual inspection under constant conditions and can significantly improve the inspection accuracy.

[Means for solving problems]

The present invention has been made to solve the above problems, and its technical means is configured as follows. That is, the first aspect of the present invention is such that the rotating member that removably holds the inspected object made of rubber-like elastic material, the driving means that rotates the rotating member, and the inspected object attached to the rotating member are movable in the radial direction. The present invention is provided with a pressing means having a structure in which the tip is inclined and pressed against the object to be inspected in the rotational direction, and an inspection means for remote visual inspection of the location of the object to be deformed by the pressing means.

Further, in claim 2, a plurality of pressing means are arranged on the outer peripheral side of the inspection object.

[Action]

The appearance inspection jig of the present invention configured as described above is
The object to be inspected is gripped by the rotating member, the object to be inspected is rotated by the driving means via the rotating member, and the object to be inspected is pressed in the inclination direction by the pressing means, so that the defective portion can be enlarged with a small pressure contact. . It becomes possible to easily discriminate the enlarged defective portion by the inspection means.

Further, when the object to be inspected is pressed by a plurality of pressing means, even a small defect portion is deformed a plurality of times, so that when it comes to the pressing means to be inspected, the defective portion remains adhered and is not overlooked. Further, since the object to be inspected is held by the plurality of pressing means, it is possible to hold the object to be inspected concentrically and inspect the defective portion in the same state.

〔Example〕

An embodiment of the present invention shown in the drawings will be described below.

1 to 3 show a first embodiment of a jig for appearance inspection according to the present invention. FIG. 1 is a schematic plan view showing the whole, and FIG. 2 is a schematic plan view showing the same. The front view and FIG. 3 are side views of what is shown in FIG.

That is, the appearance inspection jig shown in FIGS.
It comprises a rotating member 1 for holding and rotating the inspection object 6, and pressing means (hereinafter, referred to as pressing member) 7, 7 for pressing the surface of the inspection object 6 held by the rotating member 1.

The rotary member 1 has a disk-shaped chuck 2, a rotary shaft 5 integrally connected to the chuck 2, and a rotary shaft 5
And a drive source (not shown) connected to the chuck 2. The chuck 2 can be rotated in the vertical direction via a rotary shaft 5 by the operation of the drive source.

The chuck 2 has a disk shape, and a hole 4 for locating the object 6 to be inspected is formed in the center of the chuck 2. Further, the hole 4 is clawed from the three radial directions toward the center thereof. 3, 3, 3 are provided so that they can appear and disappear,
After positioning the inspection object 6 in the hole 4, the nail 3,
The object 6 to be inspected can be clamped by tightening 3 and 3 from three directions.

The pressing members 7 and 7 are rod-shaped, and are provided so as to be able to come into contact with and separate from each other in the direction orthogonal to the rotation axis of the inspection object 6 held by the chuck 2, and are evenly arranged. The surface of the object to be inspected 6 is deformed so as to be pushed and spread, and the pressing members 7, 7 have at least their tip portions with respect to the rotation axis of the object to be inspected 6 It is provided so as to be inclined forward in the rotation direction of.

In this case, various objects can be used as the object 6 to be inspected, but in general, an object made of an elastic body such as rubber that can be deformed by pressing by the pressing members 7 is targeted. .

Further, an inspection member 9 is provided above the inspection object 6, and the pressing portion of the inspection object 6 is projected on the inspection means (hereinafter referred to as inspection member) 9.

It is also possible to use a camera or the like having a magnifying function as the inspection member 9.

 Next, the operation of the above-described one will be described.

In order to perform the appearance inspection of the inspection object 6 using the appearance inspection jig configured as described above, first, the inspection object 6 is inserted into the hole 4 at the center of the chuck 2 of the rotating member 1. Tighten and pinch with nails 3, 3, 3 from three directions.

In this case, the claws 3, 3, 3 of the chuck 2 are tightened so that the rotation axis of the chuck 2 and the axis of the inspection object 6 match.

Next, the pressing members 7 and 7 are brought into contact with the surface of the inspection object 6 to press and deform the surface of the inspection object 6 so that the surface of the inspection object 6 is expanded.
The chuck 2 is rotated by way of the above to rotate the inspection object 6 integrally with the chuck 2.

As a result, the pressing and deforming locations of the pressing members 7, 7 on the inspection object 6 are sequentially moved in the circumferential direction of the inspection object 6 so that the inspection object 6 is deformed so as to be spread over the entire circumference. At this time, by visually observing the pressed portion of the inspection object 6 that is projected on the inspection member 9, the appearance inspection of the inspection object 6 can be performed, and a defective portion such as a minute crack or scratch on the surface can be found. .

Then, by performing the inspection as described above, it is possible to perform the visual inspection throughout the details of the inspection object 6.

In this case, the object 6 to be inspected has the rear end portion thereof chucked.
Since the tip end is in a state of being pinched from above and below by the pressing by the pressing members 7, 7, both ends are supported by the chuck 2 and the pressing members 7, 7 during rotation. It becomes such a state. Moreover, since the contact state of the pressing members 7 and 7 with the inspected object 6 is joined so as to be inclined with respect to the rotation axis of the inspected object 6, the frictional force causes elastic deformation in the inclining direction of the pressing members 7 and 7. Since it is deformed, even a small force can effectively spread the defect. As a result, the surface of the inspection object 6 can be pressed and deformed constantly over the entire circumference, and the appearance inspection can be performed over the entire circumference of the inspection object 6 under constant pressing conditions. , It is possible to reliably find a defective portion such as a minute scratch or a crack on the surface of the inspection object 6,
As a result, the inspection accuracy can be significantly improved.

When the inspection object 6 is clamped by the chuck 2, the inspection object 6 is inserted into the hole 4 of the chuck 2 and the claws 3, 3, 3 of the chuck 2 are lightly tightened, and in this state, the pressing member is pressed. 7 and 7 are lightly brought into contact with the surface of the object to be inspected 6 to rotate the chuck 2, whereby the axis of rotation of the chuck and the axis of the object to be inspected 6 are aligned, and then the claws 3, 3, By further tightening 3 to clamp the inspection object 6, the rotation axis of the chuck 2 and the inspection object axis can be easily matched.

FIG. 4 and FIG. 5 show a second embodiment of the appearance inspection jig according to the present invention. The appearance inspection jig shown in this embodiment covers the pressing members 8, 8, 8. The inspection object 6 is provided so as to be contactable and separable in equal directions in three directions orthogonal to the rotation axis of the inspection object 6, and the other structure is the same as that shown in the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals, and the detailed description of the structure will be omitted.

Also in this embodiment, the pressing members 8, 8 and 8 are provided such that at least the tip end portions thereof are inclined forward with respect to the rotation axis of the inspection object 6 in the rotation direction of the inspection object 6.

Then, even when the appearance inspection of the inspection object 6 is performed using the appearance inspection jig shown in this embodiment, the inspection is performed at the time of rotation as in the case of the first embodiment. The object 6 has its rear end clamped by the chuck 2 and its front end clamped by the pressing members 8, 8 and 8 from three directions, so that the chuck 2 and the pressing members 8, 8, Both ends are supported by 8 and, therefore, it is possible to reliably prevent the axis line of the inspection object 6 from deviating from the rotation axis line of the chuck 2 during rotation.

Therefore, the surface of the inspected object 6 can be constantly pressed and deformed by the pressing members 8, 8 and 8 over the entire circumference, and the inspected object 6 is always under constant pressing conditions.
Therefore, the appearance inspection can be performed over the entire circumference of the inspection object, whereby minute scratches and cracks on the surface of the inspection object 6 can be surely found, and the inspection accuracy can be significantly improved.

In addition, also in this embodiment, the inspection object 6 is attached to the chuck 2
When sandwiched between the chucks 2, the inspection object 6 is inserted into the hole 4 of the chuck 2 and the claws 3, 3, 3 of the chuck 2 are lightly tightened, and in this state, the pressing members 8, 8, 8 are inspected. 6 is lightly contacted with the surface of the chuck 6 to rotate the chuck 2, whereby the rotation axis of the chuck 2 and the axis of the inspection object 6 are aligned, and then the claws 3, 3, 3 of the chuck 2 are tightened. Then, the inspection object 6 may be clamped.

[Effect of device]

According to the first aspect of the present invention, since the pressing means is pressure-contacted with the tip end side inclined with respect to the rotation direction of the object to be inspected, the free end side in contact with the object to be inspected is caused by the action force of the vector. It can be deformed to a greater extent in the inclined direction of the pressing means. As a result, defects (scratches) that are long in the circumferential direction of rotation
Not only this, defects in other directions can also be easily magnified and easily discriminated by the inspection means. Further, the inclined pressing of the pressing means deforms and expands the defect, so that it is possible to discriminate with a small pressing. Therefore, since the pressing force of the pressing means against the inspection object is small, it is possible to press the inspection object in a constant state over the entire circumference without eccentricity, and the inspection object is repeatedly pressed. It is possible to always inspect in a constant state even when rotating and inspecting. As a result, the inspection accuracy can be dramatically improved.

Further, according to claim 2, since a plurality of pressing means are arranged around the object to be inspected, eccentricity in rotation of the object to be inspected is prevented, and moreover, the number of the pressing means when rotating the defective portion. Since it is enlarged and deformed a plurality of times, when the inspection object is rotated, even if a small defect comes to the pressing means for inspecting, the defect is not easily enlarged and overlooked. Therefore, the inspection accuracy can be dramatically improved.

[Brief description of drawings]

1 to 3 show a first embodiment of the appearance inspection apparatus according to the present invention, FIG. 1 is a schematic plan view showing the whole, and FIG. 2 is a front view and FIG. 3 of what is shown in FIG. Is a side view of what is shown in FIG. 2, FIGS. 4 and 5 show a second embodiment of the appearance inspection apparatus according to the present invention, FIG. 4 is a schematic plan view showing the whole, and FIG. 6 to 8 show a conventional appearance inspection apparatus, FIG. 6 is a schematic plan view showing the whole, and FIG. 7 is a side view of what is shown in FIG.
FIG. 8 is a schematic view showing an operating state. 1, 11 ...... Rotating member 2, 12 ...... Chuck 3, 13 …… Claw 4, 14 …… Hole 5,15 …… Rotating shaft 6, 16 …… Inspected object 7, 8, 17 …… Pressing member 9 , 18 …… Inspection material

Claims (2)

[Scope of utility model registration request] 1. A rotating member (1) for detachably gripping an object (6) made of a rubber-like elastic material, a drive means for rotating the rotating member (1), and a rotary member (1) attached to the rotating member (1). The pressing means (7, 8) configured to be movable in the radial direction of the inspected object (6) and in contact with the rotating direction of the inspected object (6) at least with the contact surface inclined. A jig for appearance inspection, characterized by comprising an inspection means (9) for performing a remote appearance inspection of a portion of the inspection object which is deformed by the pressing means (7, 8). 2. The pressing means (7, 7) for the object to be inspected.
The jig for visual inspection according to claim 1, wherein a plurality of 8) are arranged on the outer peripheral side.