JPH10141155A - Check device for through hole or dent section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an easy check for presence or absence of a through hole or a dent, for products (checked objects) which have the same shape but become different products depending on whether there is a hole, such as intake manifold. SOLUTION: This check device is composed of a projection 3 which can be inserted into a through hole D or a dent provided in an object, a seal member 5 which seals around the opening of the through hole D or the dent when the projection 3 is inserted into the through-hole D or the dent, and a supplying hole 4 through which liquid is supplied that is provided inside of the seal member 5. If a leakage of supplied liquid is detected, the object is judged to be without the through hole D or the dent, while if any leakage is not detected, the object is judged to have the through hole D or the dent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for inspecting a through hole or a concave portion, and more particularly to an apparatus for effectively inspecting a through hole or a concave portion which is provided or not provided depending on a kind of an article having an approximate outer shape. The present invention relates to an inspection apparatus that can perform the inspection.

[0002]

2. Description of the Related Art Conventionally, for example, an intake manifold (hereinafter, referred to as an aluminum alloy) which is a component of an internal combustion engine.
"Manifold") has almost the same outer shape, but depending on the type of vehicle (automobile) installed,
The positions of the holes drilled in the manifold are different.

FIG. 5 shows a specific example of the difference between the holes. A manifold A shown in FIG. 5A and a manifold B shown in FIG. , One predetermined boss portion 100 is blind a on the one hand, and is formed in a threaded through hole b on the other hand.

That is, the above-mentioned manifolds A and B
Are manufactured using the same mold, after which the boss B of one of the manifolds A is not machined, but the boss 100 of the other manifold B is machined to provide a hole through the interior of the manifold B. After tapping, tapping is performed.

[0005] Usually, dozens or hundreds of manifolds are stored, machined, or inspected for each product of the same type, and then shipped together for each product of the same type. Is done.

[0006]

However, in the case of articles (products) having almost the same outer shape as the above-mentioned manifold and having different types depending on the presence or absence of holes, articles of different types may be entangled in some cases. .

For example, in the above-mentioned manifold,
A pressure test is performed in which all the test pieces are immersed in water for inspection while pressurized air is applied to a space provided therein.
At the time of the withstand voltage test, the inspector visually observes the manifold. Therefore, if a manifold of a different type is mixed, it is possible to pick up the manifold during the withstand voltage test. However, because of the same external shape and the large number of inspections, it is possible to overlook the mixing of manifolds of different types, and for the first time on the assembly line of an internal combustion engine, a manifold of different types may be noticed, adversely affecting the assembly process. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a through-hole or recess capable of effectively detecting a through-hole or recess provided in an article. An inspection apparatus is provided.

[0009]

According to the present invention, there is provided an apparatus for inspecting a through hole or a concave portion according to the present invention, wherein a protrusion having a size insertable into a through hole or a concave portion provided in an article is provided. When the projection is inserted into the through hole or the recess, a seal member that seals around the opening of the through hole or the recess, and a supply hole that supplies a fluid provided inside the seal member, That is, when leakage of the supplied fluid is recognized, it is determined that the article is not provided with a through-hole or recess, and when the leakage is not recognized, the article is provided with a through-hole or recess. It is characterized by judging that there is.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1A shows an example in which a through hole B is provided in an article A, FIG. 1B shows an example in which a recess C is provided in the article A, and FIG. An example in which neither a through hole nor a concave portion is provided is shown.

In FIG. 1, reference numeral 1 denotes a plug, which is a flange 2 formed to be larger than the opening a 'of the through hole b or the recess c.
The flange 2 is integrally provided with a projection 3 having a size that can be inserted into the through hole B or the recess C. The projection 3 is provided with a supply hole 4 penetrating the flange 2.

The supply hole 4 is configured to be supplied with pressurized air from a compressor (not shown). The fluid supplied to the supply hole 4 is not limited to pressurized air, but may be a fluid such as pressurized water.

In FIG. 1, reference numeral 5 denotes a seal member, which is provided on the collar portion 2 so as to surround the projection 3. The sealing member 5 is made of an elastic member made of synthetic rubber or the like. When the projection 3 is inserted into the through hole B or the recess C, that is, when the plug 1 is set in the article A, the opening is formed. It is configured so that b 'can be hermetically or water-tightly sealed. Of course, the seal member 5 may be provided on the side of the article A without being provided on the plug 1 side. Alternatively, it may be provided not only on the plug 1 side but also on the article a side, or may be interposed between the plug 1 and the article a.

The object A and the plug 1 are relatively moved by a moving mechanism (not shown) so that they can approach and separate from each other. As this moving mechanism, the plug 1 can be made to approach the article A side by a hydraulic or pneumatic cylinder, or the plug 1 can be separated from the article A.

Next, the inspection operation of the through hole B or the concave portion C provided in the article A will be described.

At the time of inspection of the article A, the article A is gripped by a gripping mechanism (not shown), and is then
As shown in (a) or (b), the through hole b or the concave portion c is set in a pressed state. Therefore, the sealing member 5
Can keep the periphery of the opening a 'closed. Then, pressurized air is supplied to the supply hole 4. In this state, if the article A is immersed in a water tank (not shown), if there is no defect in the article A, no bubbles are generated in the water tank. The inspection is determined to be passed, and the article A is determined to be a normal article A having a predetermined through hole B or a concave portion C at a predetermined position. Here, the pass of the pressure test is
If the article A is a product such as a manifold, it means that the pressure test of the internal space leading to the through hole B has passed.

As a matter of course, in the case of the through hole b, the opposite side to which the plug 1 comes into contact is closed by a closing portion (not shown). In the case where the article is a manifold, the through hole b often communicates with a space provided inside the manifold, and in this case, pressurized air is supplied from other through holes communicating with the space. You.

By the way, when an article which does not have a predetermined through hole b or a concave part c is mixed at a predetermined position of the article a,
Even if the plug 1 approaches and presses the article A, as shown in FIG. 1 (c), the tip of the supply hole 4 is not closed, so that it is located outside the article A. Therefore, when the article A is immersed in the water tank, pressurized air blows out to the water tank. Therefore, the inspector can know that there is no through-hole or concave portion in the inspected article, and can clearly determine at a glance that the inspected article is an article different from the predetermined article.

The above-mentioned inspection is performed by immersing the article to be inspected in a water tank. However, when the pressurized gas supplied to the supply hole 4 is, for example, a visible gas containing smoke, the inspection is carried out to the water tank. Can be inspected without immersion.

Also, when a fluid such as pressurized water is supplied to the supply hole 4, the inspection can be performed without immersing the article to be inspected in the water tank.

The plug 1a shown in FIG. 2 has the tip of the supply hole 4 opened on the side surface of the projection 3, and the plug 1b shown in FIG. It is provided on the flange 2.

The supply holes 4 such as these plugs 1a and 1b
Thus, even when the protrusion 3 is pressed against the article A (see FIG. 1C), the flow of the fluid ejected from the supply hole 4 is smoothly performed.

The plug 1c shown in FIG. 4 is formed integrally with the flange portion 2, and can be used when the entire plug 1c is made of an elastic material. Note that the “seal member” of the present invention also includes the case where it is integrated with the plug body.

Further, the "seal member" in the present invention allows the fluid supplied from the supply port 4 to be supplied into the through-hole b or the recess c. If the surface is processed so as to be kept airtight or watertight, there is no need to interpose the sealing member 5. Therefore, the “seal member” of the present invention includes a case where the contact surface between the plug 1 and the article a is kept air-tight or water-tight and serves as the seal member 5.

[0025]

According to the inspection apparatus for a through hole or a concave portion according to the present invention, a protrusion having a size that can be inserted into a through hole or a concave portion provided in an article, and the protrusion is inserted into the through hole or the concave portion. When the seal is closed, the seal member seals around the opening of the through hole or the concave portion, and a supply hole for supplying a fluid provided inside the seal member is provided, and when leakage of the supplied fluid is recognized. Determines that the article is not provided with a through-hole or a concave portion, and when leakage is not recognized, it is determined that the article has a through-hole or a concave portion. Can be easily inspected depending on the presence or absence of

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a plug of an inspection device for a through hole or a concave portion according to an embodiment of the present invention, where (a) shows an example in which the plug is set on an article having a through hole, and (b) shows an example. An example in which the product is set on an article having a concave portion is shown, and FIG. 3C shows an example in which the product is set on an article having neither a through hole nor a concave portion.

FIG. 2 is a sectional view showing another example of a plug.

FIG. 3 is a sectional view showing still another example of a plug.

FIG. 4 is a cross-sectional view showing another example of a plug.

FIG. 5 is an explanatory diagram showing an example in which an article is a manifold.

[Explanation of symbols]

 1, 1a, 1b, 1c Plug 2 Collar 3 Protrusion 4 Supply hole 5 Sealing member B Article B Through hole C Recess

Claims (1)

[Claims] 1. A protrusion having a size that can be inserted into a through hole or a recess provided in an article, and when the protrusion is inserted into the through hole or the recess, around an opening of the through hole or the recess. And a supply hole for supplying a fluid provided inside the seal member, and when leakage of the supplied fluid is recognized,
Inspection of a through hole or a concave portion, wherein it is determined that no through hole or a concave portion is provided in the article, and when no leakage is recognized, it is determined that the article has a through hole or a concave portion. apparatus.