JPH0618801Y2 - Tire mounting aid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a tire mounting auxiliary device that functions as an auxiliary device when an operator mounts a tire on a vehicle in an automobile production line or the like.

[Conventional technology]

For mounting tires on vehicles in automobile production lines,
Various ideas have been made to reduce the labor of the operator. For example, Japanese Utility Model Laid-Open No. 58-106291, Japanese Utility Model Laid-Open No. 58-143774 and Japanese Patent Laid-Open No. 59-164272 are known.

The tire mounting device disclosed in Japanese Utility Model Laid-Open No. 58-106291 mentioned above supports the balance cylinder device so as to be movable in the tire mounting direction, and facilitates the work of mounting the tire on the vehicle. Has become. The tire mounting device disclosed in Japanese Utility Model Laid-Open No. 58-143774 is for securely gripping various kinds of tires and mounting them on a vehicle. Further, in the device disclosed in Japanese Patent Laid-Open No. 59-164272, a trolley that travels along a transport device that transports a vehicle is provided with a pedestal that can be lifted and lowered by a lift cylinder, and the lift cylinder is rocked in the left-right direction by a rotation cylinder. By movably supporting, the assembling work is facilitated.

[Problems to be solved by the device]

However, the above-mentioned Japanese Utility Model Publication No. 58-106291 and Japanese Utility Model Publication No. 5
In the tire mounting assist device having the hanging structure as in Japanese Patent Laid-Open No. 8-143774, when an operator mounts a tire on a vehicle, most of the device needs to be manually moved, which causes a problem of poor workability. In other words, in the past, the moving rail was hung on the fixed rail attached to the building beam, and the relatively heavy part hung on this moving rail was manually moved. Needed and the move didn't go as the worker wanted.

Therefore, if the upper part of the device having a large weight and the part for gripping the tire having a relatively small weight are moved independently of each other, and only the light part is manually moved,
It is possible to reduce the labor of the operator.

It is an object of the present invention to provide a tire attachment assisting device that enables the tire to be aligned with a slight force and improves the workability of attaching the tire to the vehicle.

[Means for Solving the Problems]

The tire attachment assisting device of the present invention for this purpose extends in the same direction as the transport direction of the vehicle (1), and the building beam (5).
A fixed rail (7) attached to the fixed rail (7), and a movable rail portion (8) that is hung on the fixed rail (7) and is capable of self-propelled in the conveyance direction of the vehicle (1) at the same speed as the conveyance speed of the vehicle (1). ) And the vehicle (1) suspended from the moving rail portion (8).
And a cylinder body (46) fixed to the support mechanism section (21) that can be automatically advanced and retracted.
A balance cylinder (4) that applies a pulling force to the rod (46a) that balances the total weight of the members including the tire (T) suspended on the rod (46a) that can move in the vertical direction with respect to b).
6) and a linear bearing (44) slidably mounted on a vertically extending rail (43) fixed to the support mechanism (21) and connected to the rod (46a) side of the balance cylinder (46). And a tire gripping part (81) positioned below the lifting and lowering means (41) for gripping a tire (T) mounted on the vehicle (1).
A longitudinal movement means (61) for supporting the tire gripping part (81) so as to be able to move forward and backward with respect to the vehicle (1) via a linear bearing (63) mounted on a rail (62); The means (41) is hung from a rod (46a) of a balance cylinder (46), and the longitudinal movement means (61) is mounted on a rail (52) via a linear bearing (53). It is movably supported in a direction parallel to the spring, and the front-back direction moving means (61) is supported by a spring (56).
A push-back mechanism that is attached to the left-right direction moving means (51) for positioning by holding and the front-back direction moving means (61) and locks the movement of the tire gripping part (81) when the support mechanism part (21) moves. Part (70) and is equipped with.

[Action]

In the tire mounting auxiliary device configured as described above, the movable rail portion hung on the fixed rail can be self-propelled at the same speed as the vehicle, and the support mechanism portion hung on the movable rail portion is automatically operated. It is possible to move in and out of the vehicle. Therefore, the movement of these heavy parts by the operator is eliminated, and the labor of the operator is reduced.

Since the tire gripping part is hung on the rod of the balance cylinder of the elevating means attached to the support mechanism part through the left-right direction moving means and the front-rear direction moving means, the tire gripping means is slightly lifted by the pulling force of the balance cylinder. It is possible to raise and lower with. Further, the weight of the left-right direction moving means, the front-rear direction moving means, and the tire gripping portion is small when viewed from the weight of the entire apparatus, and the left-right direction moving means and the front-rear direction moving means have a frictional resistance that is attached to the rail. Since a small linear bearing (linear motion bearing) is used for movement, an operator can move the tire gripper as he or she desires when installing the tire, and the tire mounting workability can be greatly improved.

〔Example〕

Hereinafter, a preferred embodiment of a tire mounting auxiliary device according to the present invention will be described with reference to the drawings.

1 to 3 show an embodiment of the present invention. In the figure, 1 indicates a vehicle that is continuously conveyed at a constant pitch on a conveyor 2 of a vehicle conveyance line in an automobile assembly factory. The tire attachment assisting devices 3 are arranged symmetrically on both sides of the vehicle transport line. FIG. 1 shows one of the tire attachment assisting devices. The tire attachment auxiliary device 3 has two fixed rails 7 attached to the building beam 5 via the members 6. The fixed rail 7 is arranged in parallel with the transport direction of the vehicle 1, and two movable rail portions 8 are hung on the fixed rail 7 in a direction orthogonal to the fixed rail 7.

The moving rail portion 8 has moving rails 10 suspended from the fixed rails 7 via four pairs of wheels 9, and each moving rail 10 is connected by a drive base 11 and a connecting member 12.
A variable speed motor 13 with a brake is arranged on the upper surface of the drive base 11. The variable speed motor 13 with a brake is connected to a gear 16 supported by a pair of bearings 15 via a speed reducer 14. The gear 16 is meshed with a rack 18 mounted on the building beam 5 via a support member 17 in parallel with the fixed rail 7, and by rotation of the variable speed motor 13 with a brake,
The movable rail 10 moves in the vehicle transport direction at the same speed as the vehicle transport speed.

On the moving rail portion 8, a support mechanism portion 21 capable of automatically advancing and retreating with respect to the vehicle 1 is suspended. The support mechanism unit 21 has four pairs of wheels 22 that rotate and travel on the moving rail 10, and a base 23 is suspended from the moving rail 10 via the wheels 22. The drive base 20 is provided on the upper surface of the base 23, and the constant speed motor 24 with a brake is fixed to the drive base 20. The constant speed motor with a brake 24 has a pair of bearings 26
Is connected to a gear 27 supported by the. The gear 27 meshes with a rack 28 mounted in parallel with the moving rail 10, and the support mechanism portion 21 moves forward and backward with respect to the vehicle 1 by rotation of the constant speed motor 24 with a brake.

An elevating means 41 is attached to the support mechanism portion 21. The elevating means 41 includes a columnar member 42, a rail 43, and a linear bearing.
44, a first base 45, and a balance cylinder 46.
The columnar member 42 of the elevating means 41 is suspended on the lower surface of the base 23 of the support mechanism portion 21, and a rail 43 extending in the vertical direction is attached to the columnar member 42. Two linear bearings (linear motion bearings) 44 are slidably mounted on the rail 43. An L-shaped first base portion 45 is attached to the two linear bearings 44. The first base portion 45 is suspended from the base 23 of the support mechanism portion 21 via the balance cylinder 46. The two linear bearings 44 are the first base
It is connected to the rod 46a of the balance cylinder 46 via 45.

On the lower end surface of the first base portion 45, a rail 52 that constitutes the left-right direction moving means 51 is attached, and the rail 52 is arranged parallel to the transport direction of the vehicle 1. Two linear bearings (linear motion bearings) 53 are slidably mounted on the rail 52, and the two linear bearings 53 have a second base portion.
54 is installed. Support members 47 are provided at both ends of the first base portion 45, and a shaft 48 extending in the vehicle traveling direction is supported by the support members 47. shaft
48 is inserted through an attachment 55 attached to the center of the upper surface of the second base 54. On both sides of the attachment 55, springs 56 that are inserted through the shaft 48 are provided, and by sandwiching these two springs 56, a second base portion is provided.
54 is always located near the center with respect to the first base 45.

The front-rear direction moving means 61 is attached to the second base portion 54. The front-rear direction moving means 61 has a rail 62, a linear bearing 63, and a straight column 64. Rail 62 is the second base
It is attached to the underside of 54. Rail 62 is the rail
It is arranged in a direction orthogonal to 52. 2 on rail 62
A straight column 64 extending in the up-down direction is attached via a single linear bearing (linear motion bearing) 63. Second base 54
As shown in FIG. 3, a push-back mechanism section 70 including a rodless cylinder 71 and an attachment 72, which is different from a normal air cylinder, is attached to the lower surface of the.

The rodless cylinder 71 has a mover 71b connected to both ends of a piston (not shown) slidably arranged in the tube 71a via, for example, a pair of wire ropes. That is, the piston, the wire rope, and the mover 71b are connected in a loop. The piston (not shown) is configured to move in the front-rear direction by the pressure of the compressed air introduced into the tube 71a, whereby the mover 71b connected to the piston moves along the tube 71a. ing. The mover 71b is adapted to engage with the attachment 72 provided on the upper part of the straight column 64 in one direction. That is, the moving element 71b and the attachment 72 are engaged only when the moving element 71b is actuated to the left in FIG.
The vehicle 4 moves away from the vehicle 1. Therefore, when the mover 71b is located at the right end of the figure, the straight post 64 can be moved forward and backward with respect to the vehicle.

A tire grip portion 81 that grips the tire T mounted on the vehicle 1 is attached to the straight column 64 of the front-rear direction moving means 61. The tire grip portion 81 has a rail 82 fixed to a straight column 64 and extending in the vertical direction. The rail 82 has grip attachments 84a, 84b for gripping the outer peripheral surface of the tire T via linear bearings 83a, 83b. Is provided. An air cylinder 85 with a brake is attached to one of the grip attachments 84a.
The rod main body 85a of the air cylinder 85 with a brake is connected to the other grip attachment 84b. The grip attachments 84a and 84b are opened and closed by the operation of the air cylinder 85 with a brake, and when the grip attachments 84a and 84b are closed, the grip attachments 84 are fixed to the stoppers 86a and 86b fixed to the rail 82.
The a and 84b come into contact with each other. Then, when the grip attachments 84a and 84b are opened, the grip attachment 84b comes into contact with the stopper 87 provided at the lower end of the straight column 64.

In addition, the balance cylinder 46 of the elevating means 41 is constituted by the rod 46a.
The total weight of the members including the tire T suspended on the rod, that is, the total weight of the front-rear direction moving means 61, the left-right direction moving means 51, the tire gripping portion 81, and the tire T is combined with a pulling force that balances with the total weight. The tire gripping portion 81 can be moved up and down with a slight force when the tire T is attached.

Next, the operation of the above tire mounting auxiliary device will be described.

When the tire T is supplied from the transfer machine (not shown) to the vicinity of the center of the grip attachments 84a, 84b of the tire mounting auxiliary device 3, the grip attachments 84a, 84b are closed by the operation of the air cylinder 85 with a brake, and as shown in FIG. As shown, the tire T is securely gripped by the tire grip portion 81. At this time, the balance cylinder 46 is in a state of being held at the rising end. Next, constant speed motor with brake 24
Is operated and the tire T is advanced to the position (a) in FIG. 1 while being held by the tire grip 81.

Here, when the front axle or the rear axle of the vehicle 1 comes to a position substantially coincident with the wheel center of the tire T, the variable speed motor 13 with a brake operates and the tire gripper 81 conveys at the same speed as the conveyor 2. At the same time, the moving element 71b of the rodless cylinder 71 moves to the right in FIG. 1, the tire gripper 81 can move freely to the right, and the balance cylinder 46 enters a balanced state. In this state, the operator M manually moves the tire grip 81 to bring the tire T closer to the front axle or the rear axle of the vehicle 1. Then, for example, the hub bolt hole of the tire T is aligned with the hub bolt of the front axle, and the tire T is attached at the position (a) in FIG. In the case of this work, the operator finely adjusts the tire T forward and backward in the traveling direction of the vehicle 1, and performs fine adjustment in the left-right direction and the up-down direction, and performs alignment while applying rotation to the axis of the tire T. , All above and below the tire grip 81,
It can be operated by front / rear and left / right operation.

When the installation of the tire T is completed, the operator turns on a completion push button (not shown) so that the air cylinder with brake 85
Rod 85a extends and gripping attachments 84a, 84b are opened. When the opening of the grip attachments 84a and 84b is confirmed, the moving element 71b of the rodless cylinder 71 moves to the left in FIG. 1, but the moving element 71b and the attachment 72 are moved.
, The tire gripping part 81 is
It moves to the left along with and is locked at the left end. At the same time, the balance cylinder 46 is held at the rising end.
After that, the constant speed motor with brake 24 and the variable speed motor with brake 13 operate in the direction opposite to the direction in which the tire T is attached, and the tire grip 81 is returned to the tire transfer position. In this case, the variable speed motor with brake 13 is switched to high-speed running, and the moving rail 10 is quickly returned.

When the movable rail 10 is returned to the initial transfer position, the brake constant speed motor 24 and the brake variable speed motor 13 are braked to hold the stop position. The brake of each motor is automatically released at the same time as the rotation of the motor.
Hereinafter, the cycle described initially will be repeated.

As described above, after the tire gripping portion 81 is roughly aligned with the vehicle 1 by the self-propelled movement of the moving rail portion 8 and the support mechanism portion 21, the operator M moves the tire gripping portion 81 to the front axle of the vehicle 1 or the like. Since there is no need to manually move a heavy part as in the prior art, the labor of the worker M is reduced and the workability is improved. That is, the forward / backward, upward / downward, leftward / rightward movements of the tire gripping portion 81 by the operator M include the lifting / lowering means 41, the front / rear direction moving means 61, and the left / right direction moving means 51 after the support mechanism portion 21 having a linear bearing with low frictional resistance. Since the tire gripping portion 81 is easily moved, the tire gripping portion 81 can be quickly moved to the position where the operator M desires. Also, the front-back direction moving means
Since 61, the left-right direction moving means 51, and the tire grip 81 are suspended via the balance cylinder 46, they are in the same state as when they are stationary in a weightless state, and when the tire grip 81 is moved up and down. Only a small amount of power is required.

[Effect of device]

 According to the present invention, the following effects can be obtained.

(1) After roughly aligning the tire gripping part with the vehicle by self-propelling the moving rail part and the support mechanism part, manually manipulating the tire gripping part through the elevating means, the left-right direction moving means, and the front-back direction moving means. Since it is moved by, the movement of a heavy part by the operator can be eliminated, and the labor of the operator can be reduced.

(2) The weight of the left-right direction moving means, the front-back direction moving means, and the tire gripping means that are suspended in the support mechanism portion via the balance cylinder of the elevating means is smaller than the weight of the entire device, and the elevating means is Since the left-right direction moving means and the front-back direction moving means are moved by linear bearings with low frictional resistance, the tire grip can be quickly moved as desired when installing the tire, greatly improving the workability of installing the tire. it can.

(3) The front-rear direction moving means is positioned by holding the spring, and the movement of the tire gripping portion is locked by the push-back mechanism portion when the support mechanism portion moves, so that the tire gripping portion is set to the predetermined position when the movement of the support mechanism portion is completed. Can be positioned. Therefore, it is possible to prevent the tire gripping portion from hitting the vehicle due to inertial force while maintaining a small sliding resistance when the tire gripping portion moves.

(4) Since the elevating means, the left-right direction moving means, and the front-rear direction moving means are guided through the linear bearings mounted on the rails, the direction of the tire gripping part does not change due to twisting, and the tire gripping posture is maintained. Can be kept constant. Therefore, it is not necessary for the operator to correct the direction of the tire, and the tire mounting work becomes easy.

[Brief description of drawings]

FIG. 1 is a front view of a tire attachment assisting device according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a side view as seen from the direction of arrows III-III in FIG. Is. 1 …… Vehicle 3 …… Tire mounting auxiliary device 7 …… Fixed rail 8 …… Movement rail part 21 …… Support mechanism part 41 …… Elevating means 51 …… Left and right direction moving means 61 …… Front and back direction moving means 70 …… Push-back mechanism 81 ... Tire grip

Claims (1)

[Scope of utility model registration request] 1. A vehicle (1) extending in the same direction as the conveying direction,
A fixed rail (7) attached to a building beam (5) and suspended on the fixed rail (7), and can be self-propelled at the same speed as the transfer speed of the vehicle (1) in the transfer direction of the vehicle (1). A moving rail portion (8) and the vehicle (1) suspended from the moving rail portion (8)
And a cylinder body (46) fixed to the support mechanism section (21) that can be automatically advanced and retracted.
A balance cylinder (4) that applies a pulling force to the rod (46a) that balances the total weight of the members including the tire (T) suspended on the rod (46a) that can move in the vertical direction with respect to b).
6) and a linear bearing (44) slidably mounted on a vertically extending rail (43) fixed to the support mechanism (21) and connected to the rod (46a) side of the balance cylinder (46). And a tire gripping part (81) positioned below the lifting and lowering means (41) for gripping a tire (T) mounted on the vehicle (1).
A longitudinal movement means (61) for supporting the tire gripping part (81) so as to be able to move forward and backward with respect to the vehicle (1) via a linear bearing (63) mounted on a rail (62); The means (41) is hung from a rod (46a) of a balance cylinder (46), and the longitudinal movement means (61) is mounted on a rail (52) via a linear bearing (53). It is movably supported in a direction parallel to the spring, and the front-back direction moving means (61) is supported by a spring (56).
A push-back mechanism that is attached to the left-right direction moving means (51) for positioning by holding and the front-back direction moving means (61) and locks the movement of the tire gripping part (81) when the support mechanism part (21) moves. A tire mounting auxiliary device comprising a portion (70) and.