JPH09150258A - Device for inspecting casting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily execute the inspection with a ball passing through in a casting having a through-hole, such as an intake manifold. SOLUTION: In an inspecting instrument at the time of opening an opening part at the one side of the through-hole 2 in a recessed part 3 arranged in the casting, an auxiliary member 4 freely inserted/removed in the recessed part 3 is arranged and also, at the time of inserting the auxiliary member 4 into the recessed part 3, a communicating hole 6 communicating a first opening hole part 6a opened so as to correspond to the one side part of the opening hole part of the through-hole 2 opened in the recessed part 3 and a second opening hole part 6b opened in the position at the outer part of the casting, is arranged. The ball B is passed into the through-hole 2 through the communicating hole 6 and the inspection is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast product inspection apparatus for inspecting through holes formed during casting of a cast product.

[0002]

2. Description of the Related Art Conventionally, for example, when a cast product is an intake manifold, a through hole is formed inside the cast product by a core during casting.

After the casting, the core is removed to complete the through hole. Whether the core has been completely removed or the through hole is formed as specified, and further, the through hole is formed in the through hole. In order to inspect whether burrs are generated, inspection using a steel ball is performed.

The inspection using this ball is performed by inserting a ball having a diameter slightly smaller than the diameter of the through hole from one opening of the through hole. Then, if the ball is safely ejected from the other opening of the through hole, it is determined that the through hole is formed as specified. If the inserted ball does not come out from the other opening, there is a high possibility that some of the core is left in the through hole, or burrs, etc. The cast product is returned to the sand removing process and the like again.

[0005]

However, in the above-described casting product inspection apparatus using balls, when the openings on both sides of the through hole are located outside the casting product, the ball passes through the through hole. It ’s easy to let
If one of the openings of the through hole is opened in the recess provided in the cast product, it is inconvenient to pass the ball through the through hole, and there is a drawback that the inspection cannot be automated.

Therefore, the present invention has been made to solve the above-mentioned drawbacks, and an object thereof is to provide a ball in the through hole even if the opening of the through hole is opened in the recess of the casting. An object is to provide an inspection device for a cast product that can be easily passed.

[0007]

In order to achieve the above object, the casting product inspection apparatus according to the present invention is provided with one opening of a through hole formed during casting of the casting product. In an inspection device for a cast product, in which a ball is passed through the through hole when it is opened in the recess, an auxiliary member that can move in and out is provided in the recess, and the auxiliary member has the auxiliary member. When inserted into the recessed portion, a first opening portion which is opened in conformity with one opening portion of the through hole which is opened into the recessed portion, and a second opening portion which is opened at a position outside the cast product. A communication hole communicating with the opening of is provided, and the ball is passed through the through hole through the communication hole. Also, when one of the two through-holes formed during casting of the cast product is open in the recess provided in the cast product, balls are respectively passed through the through-holes for inspection. In a casting product inspection device, an auxiliary member that can move in and out of the recess is provided, and when the auxiliary member is inserted into the recess, the one of the penetrating openings that opens in the recess is provided. A communication hole is provided that communicates a first opening that matches one opening of the hole and a second opening that matches the one opening of the other through hole. It is characterized in that a ball is passed from the one through hole to the other through hole through a communication hole. And
It is characterized in that the auxiliary member is moved in and out by a piston.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a schematic configuration of a casting product inspection apparatus according to an embodiment.

The cast product 1 has already been sand-removed, and therefore the sand of the core is also removed in the through holes 2 formed in the cast product 1.

The casting 1 has a recess 3 which is open upward.
Are formed. On the side wall of the recess 3, one opening 2a located above the through hole 2 is opened, and the other opening 2b of the through hole 2 is opened on the side wall of the casting 1. ing.

The auxiliary member 4 is formed in such a size that it can move in and out without forming a large gap in the recess 3. The auxiliary member 4 is inserted into the recess 3 (see the state of FIG. 1) by the piston 5a that is reciprocated by the drive source 5 such as an air cylinder or a hydraulic cylinder (see the state of FIG. 1), and is extracted from the recess 3. Is configured.

The auxiliary member 4 is provided with a communication hole 6 having a hole diameter substantially the same as that of the through hole 2. The first opening 6a, which is one opening of the communication hole 6, has the auxiliary member 4 When it is inserted into the recessed portion 3, it is configured to match the opening 2 a of the through hole 2. The second opening 6b, which is the other opening of the communication hole 6, is a portion that protrudes from the through hole 2 when the auxiliary member 4 is inserted into the recess 3, that is, the outside of the casting 1. It is opened at the position.

In FIG. 1, reference numeral 7 denotes a guide hopper provided around the other opening 6b of the communication hole 6, and guides the ball B put in the guide hopper 7 to the opening 6b. Has a role.

In FIG. 1, 8 is the other opening 2 of the through hole 2.
a hopper provided around the lower part of the opening b
Receiving the ball B discharged from the shooter 9a, 9
It can be guided to the lower part of the elevator 10 via b.

The elevator 10 has a bucket (not shown) so that the ball B can be lifted upward, and is driven by a power source (not shown). A shooter 11 is provided on the top of the elevator 10 so that the ball B lifted by the elevator 10 can be delivered to the guide hopper 7.

In FIG. 1, S is a sensor consisting of a photo sensor, and is constructed so that the ball B discharged from the opening 2b can be detected.

As the sensor S, any known sensor using a proximity switch or the like can be used as long as it can detect the ball B. The output signal of the sensor S is
It is used to control the lighting of a display lamp provided on a monitoring panel (not shown).

In the inspection device for the cast product 1 having the above-mentioned structure,
In order to inspect the through hole 2, first, the recess 3 of the casting 1 is set so as to be directly below the piston 5a with the piston 5a raised. Next, the auxiliary member 4 is inserted into the recess 3 by the lowering of the piston 5a. Then, when the ball B is lifted by the elevator 10 and supplied to the guide hopper 7, the ball B is guided to the through hole 2 via the communication hole 6.

At this time, if the auxiliary member 4 is inserted into the concave portion 3 to a prescribed position and the through hole 2 is normal, the ball B passes through the communication hole 6 and the through hole 2 and then from the opening 2b. The discharged ball B is detected by the sensor S. Then, based on the detection signal, the display lamp of the monitoring panel indicates that the inspection has passed.

On the other hand, if the sand in the recess 3 is not completely removed, or burrs remain in the recess 3, that is, if the recess 3 itself is not formed properly, the through hole is formed. Since the second opening 2a and the first opening 6a of the communication hole 6 do not completely coincide with each other, the ball B stops at both openings 2a and 6a. Therefore, the sensor S cannot detect the ball B, and the indicator lamp on the monitoring board indicates an abnormality of the cast product.

Further, even if the auxiliary member 4 is normally inserted into the recess 3, that is, even if the recess 3 is normally formed, the sand of the core remains in the through hole 2, or When a burr or the like remains in the through hole 2, the ball B stops in the through hole 2. Therefore, the sensor S
Cannot detect the ball B, and the display lamp on the monitoring panel will indicate an abnormality in the casting. The cast product 1 determined to be abnormal is returned to the sand removing process or the like again for processing.

As described above, in the cast product inspection apparatus according to the present embodiment, even when the through hole 2 is opened in the recessed portion 3, the through hole 2 provided in the auxiliary member 4 is used. Since the ball B can be supplied, the through hole 2 can be easily inspected. Moreover, there is an effect that the state of the recess 3 can also be inspected by the insertion state of the auxiliary member 4 into the recess 3.

FIG. 2 shows a cast product inspection apparatus according to another embodiment of the present invention. This casting 1'includes
In addition to the through hole 2 shown in FIG.
A through hole 2'where the lower opening 2a 'opens is provided inside.

In the auxiliary member 4 ', when the auxiliary member 4'is inserted into the recess 3', the opening 2 of one through hole 2 is formed.
A communication hole 6'having a first opening 6a 'matching a and a second opening 6b' matching the opening 2a 'of the other through hole 2'is provided.

Therefore, when the ball B is supplied from the opening 2b 'above the other through hole 2', the ball B can pass through the through hole 2 ', the communicating hole 6'and one through hole 2. it can.

The inspection procedure of the above construction is the same as that shown in FIG. 1, so the description thereof will be omitted. In any case, if the ball B passes through the holes 2 ', 6', 2 then the cast product is obtained. 1'is judged to be normal, and when the passage of the ball B is blocked, the cast product 1'is judged to be abnormal.

As described above, in the cast product inspection apparatus according to this embodiment, even if the two through holes 2 and 2'are opened in the recess 3 ', the ball B can be passed once. There is an effect that can be inspected.

[0028]

The cast product inspection apparatus according to the present invention is provided with an auxiliary member which can be inserted into and removed from the recess, and when the auxiliary member is inserted into the recess, the auxiliary member is inserted into the recess. Since there is provided a communication hole that communicates with the first opening that is opened in conformity with one opening of the opened through hole and the second opening that is opened at a position outside the cast product, Even when the through hole is opened in the recess, the ball can be supplied through the communication hole provided in the auxiliary member, and the through hole can be easily inspected.

Further, an auxiliary member which can be freely moved in and out of the concave portion is provided, and when the auxiliary member is inserted into the concave portion, one of the through holes which is opened in the concave portion is provided in the auxiliary member. Since the communication hole that connects the first opening portion that is opened in conformity with the opening portion and the second opening portion that is opened in conformity with one opening portion of the other through-hole is provided, it is possible to make the inside of the concave portion 2 Even if the through hole of the book is open, there is an effect that the inspection can be performed by passing the ball once.

Further, when the piston is driven to move the auxiliary member in and out, the inspection can be automated.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a schematic configuration of a casting product inspection apparatus according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a schematic configuration of a casting product inspection apparatus according to another embodiment of the present invention.

[Explanation of symbols]

 1, 1'cast product 2, 2'through hole 3, 3'recessed portion 4, 4'auxiliary member 5a piston 6, 6'communication hole 6a, 6a 'first opening portion 6b, 6b' second opening portion 7 Guide hopper 8 Hoppers 9a, 9b, 11 Shooter 10 Elevator B Ball S sensor

Claims (3)

[Claims] 1. A casting product in which a ball is passed through the through hole when one opening of the through hole formed during casting of the casting product is opened in a recess provided in the casting product, and the casting product is inspected. In the inspection device, the auxiliary member that can move in and out of the recess is provided, and when the auxiliary member is inserted into the recess, one of the through holes that opens in the recess is provided. A communication hole is provided that communicates the first opening that matches the opening and the second opening that opens at a position outside the casting, and the ball is inserted into the through hole through the communication hole. An inspection device for a cast product, characterized in that 2. A ball is passed through each of the through holes when one of the two through holes formed at the time of casting of the cast product is open in the recess provided in the cast product. In an inspection device for a cast product to be inspected by, an auxiliary member which can freely move in and out of the recess is provided, and when the auxiliary member is inserted into the recess, the auxiliary member is opened in the recess. A communication hole that communicates with a first opening that matches one opening of one through hole and a second opening that matches one opening of the other through hole An apparatus for inspecting a cast product, wherein a ball is passed from the one through hole to the other through hole through the communication hole. 3. An apparatus for inspecting a cast product according to claim 1, wherein the auxiliary member is driven in and out by a piston.