JP2876558B2 - Airtightness test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for checking the airtightness of a rim of an aluminum alloy wheel, a so-called aluminum wheel, and more particularly to a high-pressure air (high-pressure air) inside the rim. Is installed (set) underwater in such a state, and by visually checking whether or not bubbles due to high-pressure air are generated in the water, the presence or absence of air leakage, that is, the state of airtightness is checked. The present invention relates to a submerged airtightness test device for inspection.

[0002]

2. Description of the Related Art Conventional airtightness testing devices (inspection devices)
As shown in FIGS. 4 and 5, while holding the wheel 990, it has disks 40, 40 ′ mounted (set) in close contact with both sides thereof.
0 ', which has a motor 30 for rotating and driving a drive disk 40, which is one of the disks 50', and further has an arm 50 to which these disks 40, 40 'and the motor 30 are attached. The disk 40, 40 'mounted on the distal end portion, the wheel 990, and a water tank 90 for storing water for inspection are provided. The two disks 4 of such a test device
0 and 40 ', the wheel 990 is mounted in an upright state, and high-pressure air is introduced from one side of the disk 40' mounted in such a state as shown in FIG. Wheel 990 set in a proper state
And the like are put into a water tank in which water is stored, and the generation of air bubbles is visually observed, thereby judging (inspection) whether airtightness is good or not.

[0003]

However, in this case, when the rim is put into the water, that is, when it is immersed in water, a portion of the rim portion 991, such as a corner portion, where the cross-sectional shape changes,
Bubbles may adhere due to changes in shape, surface characteristics of the material, dust attached to the surface, and the like. Therefore, it is necessary to remove air bubbles adhering to the outer surface of the rim portion 991 before performing the visual inspection. For this purpose, a method of rotating the wheel 990 at a high speed and removing the same by viscous water or the like is generally considered. However, if the rotation is performed at an excessively high speed, as shown in FIG. 5, the water surface foams, and there is a possibility that the water surface also foams.
Therefore, when an operator visually observes from above, it is impossible to distinguish between the generation of bubbles due to airtight leakage and the generation of bubbles due to the bubbling phenomenon on the water surface. Therefore, in the conventional device, the wheel 990 is slowly rotated, and the surface of the rim portion 991 of the wheel 990 is rubbed with a brush or the like to remove bubbles attached to the rim portion surface when submerged. Thereafter, an airtightness test for checking for air leakage is performed. Therefore, it takes a lot of time to inspect one wheel, and there is a problem that work efficiency is reduced. SUMMARY OF THE INVENTION It is an object (problem) of the present invention to provide an aluminum wheel airtightness test apparatus having excellent work efficiency in order to solve such problems.

[0004]

Means for Solving the Problems In order to solve the above problems, the present invention takes the following measures. That is, with respect to a submerged airtightness test device for inspecting the airtightness of a rim portion of an aluminum wheel, a water tank provided through a pillar on a base and having a viewing window partially made of a transparent body. A motor installed in the water tank, and a submersible pump driven by the motor, and further submerges water discharged from the submersible pump.
Work water jet toward the rim portion of the (aluminum wheels)
A water ejecting device including a nozzle that ejects the water, a frame attached to a support provided on the base, and a frame that moves up and down along the support, and an upper member that constitutes the frame is supported via a bearing, and ,
A propeller shaft driven vertically by a power cylinder and rotated by a motor described below, and a propeller shaft for rotating the propeller shaft, and attached to a side member constituting the frame so as to be vertically movable. A motor, an upper disk provided at the lower end of the propeller shaft, and a motor provided so as to face the upper disk.
A lower disk rotatably attached to a lower member constituting the frame, a hollow shaft provided at a center position of the lower disk and rotating integrally with the lower disk, a rotary valve which is formed to supply high-pressure air to the inside diameter portion of the hollow shaft, consisted of
Therefore, two test devices of these configurations are arranged in parallel.
It was decided to adopt such a configuration.

[0005]

According to the present invention, the following functions are provided. First, when performing the airtightness inspection of the work (aluminum wheel) 99, as shown in FIG. 1, the work 99 is set in a submerged airtightness test apparatus having the above configuration. for that purpose,
It is necessary to submerge the work 99 in the water tank 9 provided on the base 95 via the pillar 97, and to introduce high-pressure air into the work 99. First, the rectangular frame 5 attached to the support 96 provided on the base 95 via the arm 94 is attached to the lower member 55 forming the lower end of the frame 5 by the water surface in the water tank 9. It needs to be lifted from 98 to a position above. At that position, the work 99 is mounted between the upper disk 1 and the lower disk 4. Next, the work 99
, High-pressure air is injected through the rotary valve 7, the hollow shaft 6, and the like.

The work 99 thus mounted (installed) is lowered together with the frame 5 and submerged in a position below the water surface in the water tank 9. In such a state, the submerged work 99 is rotated by the rotational driving force of the motor 3. At the same time, work 99
As shown in FIG. 3, the water in the water tank 9 sucked by the submersible pump 11 is jetted from the nozzle 15 as a water jet toward the rim portion 991. Thus, the work 9
The air bubbles and the like that have adhered to the surface of the rim portion 991 at the time of submersion are removed. Since the water injection device 19 including the nozzle 15 and the like is installed on the opposite side (back side) of the viewing window 91 as shown in FIG. When the rim portion 991 comes to the viewing window 91 by a half turn, the airtightness is instantly inspected by visually checking the portion. Further, since the work 99 is driven to rotate by the motor 3, the airtightness inspection is continuously performed over the entire circumference of the rim portion 991 of the work 99.

[0007] In order to perform these series of operations efficiently, two test apparatuses having the above configuration are prepared, and they are installed in parallel as shown in FIG. Then, first, in the left diagram in the figure, the surface of the work 99 is inspected for air leakage (air leakage). In this way, while the air leak inspection is being performed, the work 99 is automatically set on the lower disk 4 as shown in the right diagram in the figure, and the test apparatus (inspection apparatus) is set.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the structure of this embodiment is provided on a base 95 via a pillar 97, and includes a water tank 9 in which water is stored and a support provided on the base 95. The frame 5 is attached to the supporting member 96 and moves up and down along the column 96. The frame 5 is supported at the center of the upper member 51 constituting the frame 5 via the bearing 22, and is driven vertically by the power cylinder 8. Further, the propeller shaft 2 is driven to rotate by a motor 3 described later, and the propeller shaft 2 is driven to rotate. The vertical movement of the side member 52 constituting the frame 5 via the mounting member 32 is prevented. A motor 3 attached as possible, an upper disk 1 provided at a lower end of the propeller shaft 2, and a motor 3 facing the upper disk 1. A lower disk 4 rotatably attached to a lower member 55 constituting the frame 5; and a lower disk 4 provided at a center position of the lower disk 4 to rotate integrally with the lower disk 4. It is basically composed of a hollow shaft 6 and a rotary valve 7 that supplies high-pressure air to the inner diameter of the hollow shaft 6 even during the rotation of the hollow shaft 6. Further, in such a configuration, a water jet device 19 that sucks water in the water tank 9 and jets a water jet to the surface of the rim portion 991 of the work 99 is provided in the water tank 9. It has a configuration.

In such a basic configuration, the water tank 9
A viewing window 91 made of a transparent material is provided on a part of the side wall of the work 9 so that the state of the work 99 submerged in the water in the water tank 9 can be observed below the water surface through the viewing window 91. Has become. In the water tank 9, a work 9 is provided on the opposite side (back side) of the side where the viewing window 91 is located.
A water jet device 19 for jetting a water jet on the surface of the rim 991 of the ninth portion is provided. And this water injection device 19
Is a pump (submersible pump) 11 installed in water, a submersible motor 12 for driving the submersible pump 11, a strainer 13 for introducing water in the water tank 9 to the submersible pump 11, and a A nozzle (water injection nozzle) 15 for injecting the sucked water toward the rim portion 991 of the work 99 as a water jet. The mechanisms for generating the water jet, such as the strainer 13, the pump 11, and the water injection nozzle 15, are all installed in water, so that air (bubbles) does not enter the water jet at all. Is what it is.

Next, the frame 5 attached to the support 96 so as to be able to move up and down via the arm 94 is formed in a quadrangular basket-like form.
And a lower member 55 vertically opposed to the upper member 51, and four side members 52 connecting the upper member 51 and the lower member 55 to each other. The frame 5 having such a configuration is connected to an elevating frame 93 provided in the support 96 via an arm 94 provided on the upper member 51. The elevating frame 93 is connected to an elevating cylinder 92 provided below the column 96, and can be moved up and down in the column 96 by the operation of the elevating cylinder 92. I have.

The upper member 51 forming the frame 5 is provided with a power cylinder 8, and the tip of a rod 81 of the power cylinder 8 forms the propeller shaft 2 described later. It is. That is, the propeller shaft 2 formed at the tip of the rod 81 of the power cylinder 8 is provided in the frame 5. The lower end of the propeller shaft 2 has an upper disc 1
And the upper disk 1
The lower disk 4 is provided at a position opposite to the vertical direction.

A motor (electric motor) 3 is mounted on the side member 52 via a mounting member 32. The electric motor 3 is moved in accordance with the vertical movement of the propeller shaft 2 and the upper disk 1. It can slide up and down on the side member 52. The electric motor 3 is provided with a drive gear 31. The drive gear 31 is provided on the propeller shaft 2.
And the driven gear 21 provided at the rear end.

The lower disk 4 is rotatably mounted on a lower member 55 via a bearing 59 and a hollow shaft 6 as shown in FIG. The hollow shaft 6 is connected to the center of the lower disk 4 and rotates integrally with the lower disk 4. Further, a rotary valve 7 is provided at a lower end portion of the hollow shaft 6, and high-pressure air such as factory air is introduced into the rotary valve 7. The lower end of the hollow shaft 6 is in contact with the rotary valve 7 so that the high-pressure air does not leak even when the lower disk 4 and the hollow shaft 6 are rotating.

As shown in FIG. 2, two airtightness test devices having such a configuration are arranged in parallel, and an inspection window 91 for inspection is installed so as to face the operator.

The operation of this embodiment having the above-described configuration will be described. First, the work (aluminum wheel) 9
In performing the airtightness test 9, the work 99 is set in a submerged airtightness test apparatus as shown in FIG. 1.
For this purpose, it is necessary to submerge the work 99 in the water tank 9 and to introduce high-pressure air into the work 99. First, a rectangular frame 5 attached to a support 96 provided on the base 95 so as to be able to move up and down, and a lower member 55 forming a lower end of the frame 5 are attached to a water tank. It must be lifted until it comes out of the water surface 98 in 9. In this state, the work 99 is mounted between the upper disk 1 and the lower disk 4. Next, high-pressure air is injected through the rotary valve 7, the hollow shaft 6, and the like into the inside of the work 99 thus mounted (installed). Then, this state is submerged in a position below the water surface in the water tank 9 together with the frame 5 by operating the elevating cylinder 92 installed in the support column 96.

In such a state, the submerged work 99 is rotated by the rotational driving force of the motor 3. At the same time, the rim 99 of the workpiece 99
As shown in FIG. 3, the water in the water tank 9 sucked by the submersible pump 11 is jetted from the nozzle 15 as a water jet toward 1. Thereby, the rim 9 of the work 99 is formed.
Bubbles and the like adhering to the surface of the substrate 91 when submerged are removed. In addition, the water injection device 19 including the nozzle 15 and the like
Is installed on the opposite side (back side) of the viewing window 91, as shown in FIG. When the user comes to the place, the inspection of the airtightness is performed instantaneously by visually observing the portion. Further, since the work 99 is driven to rotate by the motor 3, the rim portion 99 of the work 99 is continuously
1, the airtightness inspection is performed over the entire circumference.

In the above inspection, two test devices having the above configuration are installed in parallel as shown in FIG. 2, and first, in FIG. During the inspection, the work 99 is automatically set on the lower disk 4 in the right diagram in the figure, so that the airtight test (inspection) can be performed easily and efficiently.
Will be advanced.

[0018]

According to the present invention, a submerged airtightness test device for inspecting the airtightness of a rim portion of an aluminum wheel is provided on a base via a pillar, and is partially transparent. A water tank having a viewing window made of a body, a motor installed in the water tank, a submersible pump driven by the motor, and water discharged from the submersible pump directed to a rim of a work (aluminum wheel). A water ejecting device comprising a nozzle for ejecting the water, a frame attached to a support provided on the base, a frame moving up and down along the support, and an upper member constituting the frame supported by a bearing via a bearing, and A propeller shaft driven vertically by a power cylinder and rotationally driven by a motor described below; A motor which is mounted on a side member constituting the frame so as to be able to move up and down, an upper disk provided at a lower end portion of the propeller shaft, and a motor which faces the upper disk. A lower disk rotatably attached to a lower member constituting the frame, a hollow shaft provided at a center position of the lower disk and rotating integrally with the lower disk, Even during the rotation of the hollow shaft, a rotary valve formed to supply high-pressure air to the inner diameter of the hollow shaft is adopted, so that while slowly rotating the aluminum wheel in water, In addition, at the same time, the water jet from the water injection device is applied to the rim surface (rim) of the aluminum wheel. This makes it possible to remove bubbles adhering to the rim surface when submerged in water, so that an airtightness test (airtightness inspection) can be performed quickly and continuously. .

In addition, the inspection for the presence or absence of air bubbles is performed through a viewing window provided on the side surface of the water tank, and the removal of air bubbles generated when submerged in water is performed by a water injection device provided on the back side of the viewing window. During the inspection, the water flow was laminar (rectified) on the rim surface of the above aluminum wheel, that is, in the vicinity of the viewing window. Has become easier and more accurate. In addition, two test devices (inspection devices) are arranged in parallel, and while one device performs inspection, a work (aluminum wheel) is set (set) on the other device. (Inspection) can be performed quickly and efficiently.

[Brief description of the drawings]

FIG. 1 is an elevational view of an airtightness test apparatus showing an overall configuration of the present invention.

FIG. 2 is a diagram showing a state in which two airtightness test devices according to the present invention are arranged in parallel.

FIG. 3 is a diagram showing a state in which an airtightness test (inspection) of a rim surface is being performed by the airtightness test apparatus according to the present invention.

FIG. 4 is a view showing a set state of wheels in a conventional airtightness test apparatus.

FIG. 5 is a diagram showing an inspection state in a conventional airtightness test apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 upper disk 11 submersible pump 12 motor (submerged motor) 13 strainer 15 nozzle (water injection nozzle) 19 water injection device 2 propeller shaft 21 driven gear 22 bearing 3 motor (electric motor) 31 drive gear 32 mounting member 4 lower disk 5 frame REFERENCE SIGNS LIST 51 upper member 52 side member 55 lower member 59 bearing 6 hollow shaft 7 rotary valve 8 power cylinder 81 rod 9 water tank 91 viewing window 92 elevating cylinder 93 elevating frame 94 arm 95 base 96 support column 97 pedestal 98 water surface 99 work (aluminum wheel) 991 rim Department

Claims (1)

(57) [Claims] 1. A water tank provided on a base and partially having a viewing window made of a transparent body, a motor installed in the water tank, and a submersible pump driven by the motor, A back surface of the viewing window, comprising a nozzle for jetting water discharged from the submersible pump as a water jet toward a rim portion of the submerged work;
Side, a water injection device, a frame attached to a support provided on the base, and a frame that moves up and down along the support, and is supported via a bearing by an upper member constituting the frame, and A propeller shaft that is driven up and down by a power cylinder, and that is rotatably driven by a motor described below, and that drives the propeller shaft to rotate so that the side members constituting the frame can move up and down. A motor to be mounted, an upper disk provided at a lower end portion of the propeller shaft, and a lower disk rotatably mounted on a lower member constituting the frame, the lower disk being provided so as to face the upper disk; Provided at the center of the lower disk and integrated with the lower disk Two test devices, each comprising a hollow shaft that makes a rotational motion and a rotary valve formed so as to supply high-pressure air to the inner diameter portion of the hollow shaft even during the rotary motion of the hollow shaft. An airtightness test device characterized by being arranged side by side.