JPH0585112A - Vehicle tire fitting device - Google Patents

Abstract

PURPOSE:To simplify the operation to fit a tire to a wheel by providing a program control means to control the movement to lower the first thrusting-up means and the second elevating means after the first elevating means is lowered and the first thrusting-up means is temporarily elevated. CONSTITUTION:The first and the second elevating means C4, C6 which lower two rails 12 are provided in a vehicle tire fitting device to fit the tire 5 to a wheel 4 by carrying the wheel 4 to the work location by means of the second two roller conveyors 11, and by carrying and lowering the tire 5 by means of the second two roller conveyors 13 provided with the rails 12. Under the condition where the first elevating means C4 is lowered, the tire 5 is bitten against the wheel 4 in an inclined condition by further elevating the tire 5 loaded on the second elevating means C6 by the thrusting-up means C3, and the side surface of the tire on the upper side is thrusted down by a thrusting- down means.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is used in the assembly process of automobiles. INDUSTRIAL APPLICABILITY The present invention is used in a work process of supplying wheels as parts in an automobile assembly process. The present invention relates to semi-automation of the work of mounting a tire on a wheel.

[0002]

2. Description of the Related Art In an automobile assembling process, a wheel is mounted on a wheel and supplied to a manufacturing line as a part. Therefore, a work process for assembling the wheel and the tire is arranged near the manufacturing line. This means that the work of attaching the wheel to the axle requires a smaller number of work steps than the work of assembling the wheel and the tire, and the required equipment is small, and the type of combination of wheel and tire depends on the type of vehicle flowing through the production line. It depends on how many.

In the production line of the applicant's large-sized automobile, the process of mounting the tire on the wheel has conventionally been done manually by the operator. In this conventional process, when the tire and the foil are separately carried into the working position by the conveyor, the two workers facing each other perform the work by holding the tire from both sides of the conveyor and fitting the tire into the foil. This is one of the processes left unautomated while various work processes are being automated. The reason for this is that the tire itself is a flexible material and has a large variation in shape, and as described above, there are so many types of combinations of wheels and tires depending on the type of vehicle that one assembling device cannot handle them.

As a prior art of a device for mounting a tire on a wheel, which is arranged near an assembly line, there is an actual technique of 57-
Techniques such as 130703 and Japanese Utility Model Laid-Open No. 59-102411 are known. 577-1307
The technique disclosed in Japanese Patent Publication No. 03 has a structure in which a tire is dropped on a wheel and then fitted over the tire to rotate the rotor in a copying manner. Further, the technique disclosed in Japanese Utility Model Laid-Open No. 59-102411 has a structure in which the outer periphery of the tire is clamped by a pressing body and is fitted into the wheel while rotating the tire.

[0005]

In the case of the above-mentioned manual work, a considerably skilled worker is required as the worker, and it is necessary to make a pair of two workers, and it is appropriate. Securing workers is always a problem.
There is a mutual human problem with the two workers who form a pair. The process of mounting tires on this wheel has been a part that the administrator must pay special attention to in order to smoothly operate the whole work process.

Further, the inventor of the present application examined the above-mentioned prior art, but it was found that all of the above-mentioned prior arts are devices suitable for the assembling process of passenger cars and cannot be directly applied to the assembling process of large vehicles. .. That is, the above-mentioned conventional technology is effective for a uniform standard with almost no change in tire diameter or thickness, but in the assembly process of large vehicles, depending on the type of vehicle handled, the tire diameter or thickness is significantly Due to the differences in standards and the mixture of tubeless and tube-containing products, it was found that it is not possible to deal with it by making minute changes using conventional technology. By the way, a tire for a truck may have a wheel having a particularly small diameter so that the floor surface of the truck body is flat, and the standards may be different between the front wheel and the rear wheel.

Further, the inventor of the present invention repeated a number of tests, but even if the tires have the same standard, there is a large variation in the finished product, and the mounting process can never proceed uniformly. I understood it. In particular, there are still many problems in unmanned work at once,
It was found that it is necessary for workers to have some degree of flexibility in supporting the intervention in order to operate smoothly without interrupting the process.

The present invention has been made against such a background, and only one operator needs to be present, and the operator does not need much skill, and even tires and wheels having widely different standards can be used. An object is to provide a device capable of flexibly responding. It is an object of the present invention to make the number of working steps in the step of mounting a tire on a wheel economical.

[0009]

SUMMARY OF THE INVENTION The present invention comprises a first roller conveyor for loading a wheel to a working position, and two rails provided at a position higher than the first roller conveyor to provide a tire to the working position. A second roller conveyor for carrying in, a stopper for properly stopping the wheel and the tire at the working position, and a tire for lowering the tire by lowering the second roller conveyor at the working position to attach the tire to the wheel. In the tire mounting device for an automobile, which is provided with an assembling means, the assembling means is provided on each of the two rails at the working position, and first and second vertically moving means for lowering the two rails, A first pushing-up means for further raising the tire mounted on the second lifting means while the first lifting means is raised; A thrusting means provided above the lifting means for pushing down the tire in conjunction with the descent of the second lifting means, and a means for lowering the first lifting means and temporarily raising the first lifting means. And a program control means for controlling the movement for lowering the first push-up means and the second up-and-down means.

The operation of the pushing-down means is selective according to the operation of the operator, and the stopper, the first and second raising / lowering means, the pushing-up means and the pushing-down means are respectively controlled by solenoid valves. It is desirable to include an air cylinder.

[0011]

The tire has elasticity, and in a smooth work by a skilled worker, the elasticity of the tire is skillfully used to attach the tire to the wheel. The present invention focuses on this point, and it is possible to attach the tire by bouncing the tire at the working position and utilizing its expansion and contraction deformation. That is, when the tire is placed on the two roller conveyors and one of them is rapidly lowered and the other is pushed up, the tire falls diagonally with respect to the wheel, and while bouncing the entire tire. Part of it meshes with the foil, becoming slightly elliptical. Then, while the bounce continues, the part that is pushed up is lowered rapidly, and the inside circle of the tire becomes a little elliptical and expands and contracts to be fitted into the wheel. This behavior is not always uniform and must be monitored for smooth and continuous performance. And when a problem occurs,
It is effective to repeatedly perform the operations of pushing up and dropping and also to intervene by forcibly pushing down the descending tire with the pushing down means by supplementary force.

The program control means is also designed so that, once started, all the steps are not continuously executed, but the operator confirms each point and pushes the confirmation button before proceeding to the next step. ..

By adopting such a flexible device, the device of the present invention can widely support tires of different standards.

By introducing the apparatus of the present invention, it is sufficient for one operator to be placed in this step. The operator's main contents were confirmation work and operation of the control device, and the work requiring force such as actually lifting or pushing in the tires became unnecessary. In other words, even if the worker does not have a special long experience, he or she can immediately get to the work process by learning the work contents in a short period. Therefore, even if the worker in the process suddenly takes a rest, the substitute worker can immediately set up the work, so that the influence of the staffing on the whole work process becomes small. In addition, since only one worker is required for the process, the human relationship between the workers in the set does not become complicated, and the degree of freedom in arranging the workers can be increased. became.

[0015]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a plan view showing a configuration of an embodiment of the present invention, FIG. 2 is a view of the embodiment of the present invention taken along the line AA shown in FIG. 1, and FIG. 3 is a view of the embodiment of the present invention taken along the line BB shown in FIG. FIG. 4, FIG. 4 is a view taken in the direction of arrow C shown in FIG. 1 in the embodiment of the present invention, and FIG. 5 is a block diagram showing the overall configuration according to the embodiment of the present invention.

As shown in FIG. 5, the apparatus according to the present invention is connected to a control box 2 connected to an operation box 1 via a connection board 3 and carries a wheel 4 to a working position. And this first roller conveyor 11
A second roller conveyor 13 which is provided at a higher position and which has two rails 12 and carries the tire 5 into its working position.
A first stopper C9 for properly stopping the wheel 4 and the tire 5 at the working position, and an assembling means 14 for mounting the tire 5 on the wheel 4 by lowering the rail 12 at the working position, This assembling means 1
4, first and second raising / lowering means C4 and C6 which are respectively provided on the two rails 12 in the working position and which lower the two rails 12, and the first raising / lowering means C4 are lowered. The first lifting means C3 for further lifting the tire 5 placed on the second lifting means C6 in the state of being raised, and the second lifting means C6 provided above the second lifting means C6 for lowering the second lifting means C6. The control box 2 is provided with a thrusting-down means C8 for pushing down the tire 5 in a linked manner, and the first lifting means C3 is temporarily raised after lowering the first lifting means C4 in the control box 2 Program control means 2a for controlling the movement of lowering the means C3 and the second raising and lowering means C6 are provided. Thrust means C
The operation of 8 is selective according to the operation of the operator, and includes the first stopper C9, the first and second raising / lowering means C4 and C6, the first pushing-up means C3 and the pushing-down means C.
8 each include an air cylinder controlled by a solenoid valve.

Further, the second roller conveyor 13 has a second stopper C1 for preventing the foil 4 from being sent to the working position during the assembly work, and the first roller conveyor 1
Retracting means C2 for retracting the foil 4 on 1 to the working position
And a positioning means C5 for positioning the wheel 4 at the working position and a second pushing means C7 arranged between the first up and down means C4 for pushing up the tire 5, both of which are pneumatic cylinders controlled by solenoid valves. Is included.

Next, the operation of the embodiment of the present invention thus constructed will be described. FIG. 6 is a timing chart showing the flow of the assembling operation in the embodiment of the present invention, and FIG.
(A), (b), and (c) are figures explaining an assembly state.

When the tire pull-in switch of the operation box 1 is set to the ON state, the second stopper C1 shown in FIG. 1 moves down, and the pull-in means C2 moves to the wheel 4 waiting on the first roller conveyor 11. Pulls the tire 5 moved by another means to the position of the assembling means 14 in the state shown in FIG. 7 (a), and immediately after this pulling-in operation, the second stopper C1 moves up to make the next wheel 4 stand by. .. The retracting means C2 returns to the original position when the retracting operation is completed.

Next, when the temporary assembly switch of the operation box 1 is set to the ON state, the first push-up means C3 moves up one step higher than the second roller conveyor 13 and the two second up-and-down means C6. Subsequently, the first raising / lowering means C4 descends, and as shown in FIG. 7 (b), a temporary assembling work for aligning the phase with the wheel 4 in a state where the tire 5 is inclined is performed.

When the operator confirms the temporary assembly state and sets the wheel positioning switch of the operation box 1 to the ON state, the positioning means C5 shown in FIGS. 1 and 2 moves up to position the wheel 4. Subsequently, when the assembly switch is set to the ON state, the first pushing-up means C3 and the second raising / lowering means C6 descend, and at the same time the second pushing-up means C7 rises, and at the same time, the pushing-down means C8 shown in FIG. Is lowered and the wheel 4 and the tire 5 are combined as shown in FIG. 7 (c).

When the assembling work is completed in this way, the second pushing-up means C7 is lowered, the pushing-down means is raised, and subsequently the positioning means C5 and the first stopper C9 are lowered. At this time, the operator moves the assembled wheel 4 and tire 5 onto the fixed conveyor. When the predetermined time required for this movement has elapsed, the first raising / lowering means C4, the second raising / lowering means C6, and the first stopper C9 are raised to prepare for the next work. All of these series of operations are performed by the control of the program control means 2a provided in the control box 2 shown in FIG.

As described above, according to the present invention, the tire 5 is more than the height of the two first roller conveyors 11 on which the wheels 4 are mounted.
The second roller conveyor 1 on which the two second roller conveyors 13 on which the tires 5 are mounted are arranged at a high position and the tires 5 are mounted.
One of the tires 3 suddenly descends and the other one pushes up higher, so that the tire 5 is obliquely dropped with respect to the wheel 4, and a part of the tire 5 meshes with the wheel 4 while bouncing and forming a slightly elliptical shape. It is characterized in that it is pushed down by supplementary force to make it fit, but such an operation is not always performed reliably at each repetition, so it is a key point in a series of operations. The operator makes a confirmation every time and pushes the confirmation button to proceed to the next step, so that the product is not supplied in an incompletely assembled state.

[0024]

As described above, according to the present invention, since the contents of work performed by the worker are mainly confirmation and operation of the control device, work requiring labor and experience is eliminated, and there is no danger. Therefore, a specially trained worker is not required. For example, even if a woman is arranged, one person can proceed with the work, and this allows a degree of freedom in staffing. The manufacturing cost can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing the configuration of an embodiment of the present invention.

FIG. 2 is a view on arrow AA shown in FIG. 1 in the embodiment of the present invention.

FIG. 3 is a BB arrow view shown in FIG. 1 in the embodiment of the present invention.

FIG. 4 is a view on arrow C shown in FIG. 1 in the embodiment of the present invention.

FIG. 5 is a block diagram showing an overall configuration according to an embodiment of the present invention.

FIG. 6 is a timing chart showing a flow of an assembling operation in the embodiment of the present invention.

7 (a), (b), and (c) are views for explaining an assembled state in the embodiment of the present invention.

[Explanation of symbols]

 1 Operation Box 2 Control Box 2a Program Control Means 3 Connection Board 4 Wheels 5 Tires 11 First Roller Conveyor 12 Rails 13 Second Roller Conveyor 14 Assembly Means C1 Second Stopper C2 Retracting Means C3 First Pushing Means C4 Second One up-and-down means C5 Positioning means C6 Second up-and-down means C7 Second push-up means C8 Push-down means C9 First stopper

Claims (3)

[Claims] 1. A first roller conveyor for loading a wheel to a working position, and a second roller conveyor for loading tires to the working position, the rail being provided at a position higher than the first roller conveyor and having two rails. And a stopper for properly stopping the wheel and the tire at the working position, and an assembly means for lowering the tire by lowering the second roller conveyor at the working position to mount the tire on the wheel. In the tire mounting apparatus for a vehicle, the assembling means is provided on the two rails at the working position, and first and second vertically moving means for lowering the two rails, and the first vertically moving means are raised. The first pushing-up means for further raising the tire mounted on the second up-and-down means and the second up-and-down means are provided above the second up-and-down means. A push-down means for pushing down the tire in conjunction with the descent of the second raising / lowering means, and a first pushing-up means after lowering the first raising / lowering means and temporarily raising the first pushing-up means. And a program control means for controlling the movement of lowering the second lifting means. 2. The vehicle tire mounting apparatus according to claim 1, wherein the operation of the thrusting means is selective according to an operation of an operator. 3. The vehicle tire mounting apparatus according to claim 1, wherein the stopper, the first and second raising / lowering means, the pushing-up means and the pushing-down means each include an air cylinder controlled by a solenoid valve.