JPH07122602B2 - Vehicle wheel pressure tester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vehicle wheel that has been cast and then subjected to cutting work, in which fine air gaps that cause air leakage of the wheel are permeated. The present invention relates to a vehicle wheel pressure resistance inspection machine for inspecting whether or not the vehicle wheel exists.

(Prior Art) As is well known, a wheel of an automobile or the like has a structure in which a tire is mounted on the wheel and compressed air is filled in a space between the wheel to reduce shock and vibration. .

Therefore, it is a matter of course that the wheel or tire should not be one through which the pressurized air permeates.

In recent years, light alloy cast wheels have the advantage of being lightweight and can be cast with excellent designs, so they are more heavily used than wheels made from steel or light alloy plates and wheels made from light alloy casting. There is.

However, casting wheels are a common phenomenon in cast products.
Due to the difference in control of casting conditions, sometimes very minute through holes are formed in a very small number of products, and compressed air may escape from there.

For this reason, casting wheel products must be inspected for the existence of such extremely fine through-holes.

(Problems to be Solved by the Invention) When the above inspection is carried out on all casting wheels, in order to prevent dents from being made on the product,
In addition to having to adjust the handling, plate-like materials are attached to and removed from the front and back sides of the wheel each time, and the wheel is submerged in water to make it easier to detect air leaks. Since it is necessary to apply pressurized air so that air pressure does not leak from the mating part of the wheel rim and the plate-shaped material used as the pressurized air chamber at the time of inspection, 100% inspection is required. There is a problem that it requires a considerable number of man-hours.

(Means for Solving Problems) A vehicle wheel pressure resistance inspection machine of the present invention was invented to solve the above problems, and as shown in each drawing, a sliding shaft ( Reciprocating drive mechanism that slides 1) (2)
An arm (3) attached to the arm (3), a grip mechanism (5) pivotally supported by the grip mechanism mounting portion of the arm (3), and comprising a link device for actuating the clamp claw (4); An inspection water tank (7) for inspecting the gas leakage of the wheel (W), and the gripping mechanism (5) grips the wheel (W), and the gripping mechanism (5) inspects the wheel (W) for the wheel (W). A reciprocating drive device (6) disposed therein, an air supply device for airtightly injecting gas by making the wheel (W) airtight, and a wheel opened from the gripping mechanism (5) in the inspection water tank (7) ( This is a vehicle wheel pressure resistance tester that essentially comprises a rotating device (9) for rotating W).

The sliding shaft (1) is a rotatable spline shaft, the cylinder (10) is pivotally supported by the arm (3), and the piston rod (11) is pivotally supported by the gripping mechanism (5). The preferred embodiment is one in which the gripping mechanism (5) is tilted by the operation of (1) and one in which the expansion and contraction mechanism (12) is provided on the arm (3) to displace the position of the gripping mechanism (5). Next, the arm (3) attached to the reciprocating drive mechanism (2) sliding on the sliding shaft (1) and the clamp claw (4) pivotally supported by the gripping mechanism attachment portion of this arm.
Mechanism (5) composed of a link device that activates
And an inspection water tank (7) for inspecting the wheel (W) for gas leakage in water, and the gripping mechanism (5) grips the wheel (W), and the gripping mechanism (5) uses the wheel (W).
A reciprocating drive device (6) for arranging in a test water tank (7),
An air supply device (19) for airtightly introducing and pressurizing the wheel (W) and a rotating device (9) for rotating the wheel (W) opened in the test water tank (7) from the gripping mechanism (5). In a pressure tester for a vehicle wheel, the operation of injecting water into the test water tank (7), the wheel (W) is made airtight and the gas is fed and pressurized before the wheel (W) is covered with water. The operation of the wheel for a vehicle, which is essential to automate the operation of discharging compressed gas and water by a program after a predetermined time has elapsed after the wheel (W) is placed and water is injected into the inspection water tank (7). It is a pressure resistance tester.

(Operation and Example) Example 1 Explaining Example 1 shown in FIG. 1, FIG. 2 and FIG. 3, the reciprocating drive device (6) slides the sliding shaft (1) to reciprocate the drive mechanism. When (2) is moved up and down, the clamp claw (4) is positioned at the inspection product gripping height position, and the clamp claw operation shaft (14) is extended by the clamp claw operation cylinder (13), the guide groove (20) is provided. Clamp clamp operating shaft (1
The action member (15) fixed at the end of 4) descends.

In the guide groove (20) of the action member (15), the end of the action arm (16) bent in a "V" shape is pointed by the action arm guide pin (18), and the middle portion is clamp claw. The connecting shaft (1) is attached to the connecting arm (8) fixed to the working cylinder (13).
7) is coaxially supported, and a clamp claw mounting portion is fixed to the other end of the working arm (16), and this working arm guide pin (18) is provided in the working member (15) in a guide groove. Since it is fitted in the (20), the working arm guide pin (18) moves arcuately with the coupling shaft (17) as a fulcrum toward the back of the guide groove (20) as the working member (15) descends, and the working arm ( The clamp claw mounting part of 16) opens outward, and the clamp claw (4) follows it.
Also open outward with the connecting shaft (17) as a fulcrum and clamp claw (4)
Is ready to grip the wheel (W) of the inspection product.

When you are in this position or at the start,
In order to adjust the size of the wheel (W) to be inspected, drive the telescopic mechanism (12) of the arm (3) attached to the reciprocating drive mechanism (2) fitted to the sliding shaft (1). Move the clamp claw (4) back and forth to the gripping position.

Then, the cylinder (10) that tilts the gripping mechanism (5) provided between the tip of the arm (3) and the side surface of the gripping mechanism (5) is actuated to tilt the gripping mechanism (5) and set the horizontal state. The clamp claw (4) is moved to both sides of the wheel (W) by holding it at.

Here, when the clamp claw actuation cylinder (13) is actuated and the clamp claw actuation shaft (14) is contracted, the actuating member (15) is actuated upward, and the respective ends of the working arms (16) are separated from each other, The wheel (W) of the inspection product placed between the clamp claws (4) is gripped by the clamp claws (4).

When the wheel (W) is gripped by the clamp claw (4) and the operating pressure of the clamp claw operating cylinder (13) rises, the reciprocating drive device (6) is driven to move the arm (through the reciprocating drive mechanism (2) ( After raising 3), the sliding shaft (1) supported by the bearing (27) is attached to the rotating arm (28) and the rotating device (29).
It is operated by the sliding shaft turning device (21) consisting of and to turn the clamp claw (4) holding the wheel (W) to the position above the inspection water tank (7).

When the clamp claw (4) has properly rolled up onto the inspection water tank (7), the clamp claw (4) holding the wheel (W) of the inspection product is moved back by the operation of the cylinder (10) and the clamp claw (4) is moved. ), And then descends into the test water tank (7) by the reciprocating drive device (6) (the state is shown by a broken line in FIG. 1).

Airtight plates (22) are brought into air-tight contact with both sides of the wheel (W) lowered into the inspection water tank (7), and then the clamp claws (4) are opened, and water is applied to the wheel (W) while the inspection water tank ( 7)
While injecting water, the gas from the air supply device (19) is press-fitted into the wheel (W) through the gas inlet (23) provided in the airtight plate (22), and the wheel (W) is sandwiched with the press-fitting. The wheel (W) is rotated by rotating the airtight plate (22).

When there is a fine through hole in the rim surface of the wheel (W), air bubbles are emitted. Therefore, while rotating the wheel (W), the presence or absence of the air bubbles is checked.

At this time, the bubbles adhering to the wheel (W) are removed by a water flow injected into the inspection water tank, the wheel (W) is rotated to separate the bubbles, and the bubbles ooze out from the inside of the wheel (W). It is determined whether the air bubbles are deposited from the water and adhered to the wheel (W).

After continuously observing this state for a predetermined time, the press-fitted gas is extracted from the inside of the wheel (W), the gripping mechanism (5) is lowered to close the clamp claw (4) again, and then the airtight plate (22) is moved to the wheel (W). ), The reciprocating drive device (6) is driven to raise the arm (3), the wheel (W) is pulled up from the inspection water tank (7), the sliding shaft (1) is rotated, and the wheel ( The clamp claw (4) holding W) is tilted in the horizontal direction by the operation of the cylinder (10), and the wheel (W)
Is transferred to the position above a transfer device (not shown) for transferring the next step.

Then, the clamp claw actuating shaft (14) is extended on this transfer device to open the clamp claw (4), and the wheel (W) of the inspection product is transferred to the next step. ) Is put.

After that, the next wheel (W) inspection cycle is started.

Embodiment 2 In the second embodiment, as shown in FIG. 4, the sliding shaft (1) is in the horizontal direction, and the wheel (W) has the same gripping mechanism (5) as that of the first embodiment. After gripping with, the arm slide mechanism (24) moves the gripping mechanism (5), and the gripping mechanism direction conversion cylinder (25) that changes the direction of the gripping mechanism (5) changes the direction of the clamp claw (4). ,Also,
The direction of the arm (3) is converted by the arm direction conversion cylinder (26), and the arm (3) is lowered by the expansion and contraction mechanism (12) to place the wheel (W) in the inspection water tank (7) for pressure resistance inspection. To do. Other configurations and operations are similar to those of the first embodiment.

Third Embodiment In the third embodiment, as shown in FIG. 5, the sliding shaft (1) is in the horizontal direction as in the second embodiment, and the clamp claw (4) of the gripping mechanism (5) is used. After the wheel (W) is gripped, the arm (3) is moved by the arm slide mechanism (24) fixed to the metal fitted to the slide shaft (1), and the arm (3) is moved by the telescopic mechanism (12). Is lowered and the wheel (W) held by the clamp claw (4) is placed in the inspection water tank (7) to perform a pressure resistance inspection. Other configurations and operations are similar to those of the second embodiment.

In each of the above-described embodiments, when the sliding shaft is the spline shaft and the spline shaft is rotatably provided, the guide assist mechanism is not required and the direction can be easily changed.

Further, when the grip mechanism that tilts by the operation of the cylinder is provided by pivotally supporting the piston on the grip mechanism by the cylinder as the arm, the direction of the wheel can be easily changed.

Further, when the expansion / contraction mechanism for expanding / contracting the arm supporting the gripping mechanism is provided, the position and extension length can be easily adjusted according to the size of the wheel of the inspection product.

Further, when the airtight plate is closely attached to and detached from the wheel in the inspection water tank, the compressed air is supplied under pressure, and the water is poured into and discharged from the water tank by a program, the inspection labor is reduced.

(Effects of the Invention) The vehicle wheel withstand pressure inspection machine of the present invention allows the inspection of the vehicle wheels over all the number of the wheels to be carried out from the gripping position of the wheels when the wheels are loaded into the inspection water tank. It is easy to change the attitude to the loading position.

Also, airtight plates on the front and back sides of the wheel,
The wheel can be installed in the inspection water tank by automatically mounting it by mechanical operation so that air pressure does not leak from the joint with the wheel.

Further, since the wheel can be rotated in the water tank to remove the bubbles, it is possible to easily determine the air leak.

In addition, since the inspector can concentrate on the inspection of only the air leakage from the wheel, the inspection result becomes reliable, and the inspector is less tired.

Therefore, even when you inspect all the wheels,
The number of steps is small, and there is an advantage that the inspection can be made reliable. As described above, the present invention greatly contributes to the development of the industry.

[Brief description of drawings]

1 is a front view of an embodiment of the present invention, FIG. 2 is a partial explanatory side view of a gripping mechanism in the embodiment of FIG. 1 of the present invention,
FIG. 3 is an explanatory view of a case where the gripping mechanism is rotated from the position of FIG. 1 by a sliding shaft rotating device, and FIG. 4 is an explanatory view of an embodiment when the sliding shaft is in a horizontal direction. FIG. 5 is an explanatory view when the direction changing cylinder for changing the direction of the arm is not used in the embodiment shown in FIG. 1 ... Sliding axis; 2 ... Reciprocating drive mechanism; 3 ... Arm; 4 ... Clamping claw; 5 ... Gripping mechanism; 6 ... Reciprocating drive device; 7 ... Inspection water tank; 8 ... Coupling arm; 9 …… Rotating device; 10 …… Cylinder; 11 …… Piston rod; 12 …… Expansion mechanism; 13 …… Clamp pawl operating cylinder; 14 …… Clamp pawl operating shaft; 15 …… Working member; 16 …… Working arm ; 17 ... Coupling shaft; 18 ... Working arm guide pin; 19 ... Air supply device; 20 ... Guide groove; 21 ... Sliding shaft turning device; 22 ... Airtight plate; 23 ... Gas inlet; 24 …… Arm slide mechanism; 25 …… Grip mechanism Direction changing cylinder; 26 …… Arm direction changing cylinder; 27 …… Bearing; 28 …… Rotating arm; 29 …… Rotating device; W …… Wheel.

Claims (5)

[Claims] 1. An arm mounted on a reciprocating drive mechanism that slides on a sliding shaft, and a grip mechanism composed of a link device pivotally supported by a grip mechanism mounting portion of the arm and actuating a clamp claw. , An inspection water tank that performs a gas leak inspection of the wheel in water, a reciprocating drive device that grips the wheel with the gripping mechanism and arranges the wheel in the inspection water tank with the gripping mechanism, and seals the wheel to feed gas A pressure tester for a vehicle wheel, comprising an air supply device for pressurizing and a rotating device for rotating a wheel opened in the test water tank from the gripping mechanism. 2. The pressure tester for a vehicle wheel according to claim 1, wherein the sliding shaft is a rotatable spline shaft. 3. A pressure tester for a vehicle wheel according to claim 1, wherein the cylinder is pivotally supported by the arm and the piston rod is pivotally supported by the gripping mechanism, and the gripping mechanism is tilted by the operation of the cylinder. 4. The pressure tester for a vehicle wheel according to claim 1, wherein an extension mechanism is provided on the arm to displace the position of the gripping mechanism. 5. An arm mounted on a reciprocating drive mechanism that slides on a sliding shaft, and a gripping mechanism composed of a link device pivotally supported by a gripping mechanism mounting portion of the arm and actuating a clamp claw. , An inspection water tank that performs a gas leak inspection of the wheel in water, a reciprocating drive device that grips the wheel with the above-mentioned gripping mechanism and arranges the wheel in the inspection water tank with the gripping mechanism, and seals the wheel and charges the gas. In a pressure tester for a vehicle wheel, which comprises an air supply device for pressurizing and a rotating device for rotating a wheel opened in the inspection water tank from the gripping mechanism, an operation of injecting water into the inspection water tank, Before covering, the wheel is made airtight and the gas is sent in and pressurized, and the compressed gas and water are discharged after a specified time has elapsed after the wheel was placed and water was injected into the inspection water tank. Withstand voltage test equipment of the vehicle wheel, characterized in that automated by a program.