JPH0530124Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a balance weight attachment device that automatically attaches a balance weight to a vehicle wheel.

(Prior Art) Conventionally, as a balance weight mounting device for this type of vehicle wheel, for example, Japanese Patent Application Laid-Open No. 61-33301
As disclosed in the above publication, a wheel balancer measures the amount of wheel unbalance and its position in advance, and based on the unbalance information from the wheel balancer, a predetermined amount of balance weight is applied to each of the front and back surfaces of the wheel. Devices that are mounted in a predetermined position are known.

When attaching a predetermined amount of balance weight to a wheel in this way, there are two main methods. One method is to attach a clip to the wheel prior to attaching the balance weight, and then cut a long strip-shaped weight base material, as shown in the above-mentioned publication (Japanese Patent Laid-Open No. 61-33301). A predetermined amount of balance weight is attached to the clip. Another method is to prepare a variety of quantified balance weights that are integrated with the clip, and then attach a predetermined balance weight that matches the amount of unbalance to the wheel.

(Problem to be solved by the invention) However, in the case of the balance weight mounting device based on the former method, the clip mounting band and the weight mounting hand must move toward and away from the wheel at different times. Therefore, there was a problem in that it took a considerable amount of time to install the balance weight. Furthermore, the moving mechanisms of the two hands must be prevented from interfering with each other, which causes the problem that the device becomes large.

On the other hand, in the case of a balance weight mounting device based on the latter method, there are the following problems in setting the transfer position of the balance weight from the supply means such as a parts feeder that supplies various types of balance weights to the weight mounting hand. There is. In other words, if the above-mentioned delivery position is set near the wheels inside the pedestal, it is necessary to avoid interference with other parts, so it is not possible to arrange too many parts feeder shooters inside the pedestal, and it is difficult to maintain proper balance. Adjustment becomes difficult. Conversely, if the delivery position is set closer to the outside of the pedestal, the weight attachment hand must move over a wide range between the delivery position and the wheel weight attachment position. As in the case of the balance weight attachment device based on this method, it takes time to attach the balance weight, and the moving mechanism of this hand becomes complicated and large, leading to an increase in the size of the device.

The present invention has been made in view of these points, and its purpose is particularly the latter method mentioned above, that is, a balance weight that is attached to a wheel from among a variety of balance weights that are integrated with a clip. In a weight mounting device, when the weight delivery position of the supply means for supplying various types of balance weights is set closer to the outside of the pedestal, the weight mounting time can be shortened by separating the functions of the conventional weight mounting means. Also, the device can be made more compact.

(Means for Solving the Problems) In order to achieve the above object, the solution of the present invention is a vehicle wheel balance weight mounting device that transports wheels between a balance measuring station and a weight mounting station located downstream thereof. At the balance measurement station, the wheel balancer measures the unbalance amount and its position of the wheel, and at the weight mounting station, it measures both the front and back sides of the wheel based on the unbalance information from the wheel balancer. It is assumed that a predetermined amount of balance weight is attached to each predetermined position. and a supply means for supplying various types of balance weights to a position away from the wheel on the weight mounting station, and a receiving means for receiving a predetermined balance weight from the supply means and provided near the wheel on the weight mounting station. The structure includes a delivery means for conveying the balance weight to the pedestal, and an attachment means for attaching the balance weight on the pedestal to the wheel.

(Function) With the above configuration, in the present invention, various types of balance weights that are supplied by the supply means to positions distant from the wheels on the weight mounting station are unbalanced from among them based on the unbalance information from the wheel balancer. A predetermined balance weight corresponding to the balance amount is first transferred by the transfer means from the supply means to a cradle near the wheel on the weight mounting station. The balance weight on this pedestal is then received from the pedestal by attachment means and mounted in position on the wheel.

In this case, the delivery means can go to receive the next balance weight regardless of the attachment of the balance weight by the attachment means, and since the moving distance of the attachment means is short, it is possible to quickly attach the balance weight. I can do it. Furthermore, since the movement of both the delivery means and the attachment means is limited to a narrow range, these mechanisms become simple.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

1 and 2 show the overall configuration of a vehicle wheel balance weight mounting device according to an embodiment of the present invention, where _S1 is a positioning station for positioning the wheel H, and _S2 is a conventionally known wheel balancer. (not shown) is a balance measurement station that measures the unbalance amount and its position of the wheel H, and _S3 applies a predetermined amount of balance weight to each of the front and back surfaces of the wheel H based on the unbalance information from the wheel balancer. This is a weight mounting station that can be attached to a certain position.
The three stations S ₁ to S ₃ are located in a row at equal intervals. The balance weight is made by Tokkai Sho.
As shown in Japanese Patent No. 61-33301, the wheel is composed of a clip and a weight attached to the tip of the rim of the wheel.

In addition, 1 is a roller conveyor disposed across the three stations S ₁ to S ₃ , and 2 is a roller conveyor that positions the wheels H on the roll conveyor 1 from the station S ₁ to the balancer measurement station S 2, and the balance measurement station S ₂ . This is a transport device that sequentially transports weights from station _S2 to weight installation station _S3 . The conveying device 2 includes a pair of shuttles 3, 3 provided movably along the roller conveyor 1 on both sides of the roller conveyor 1, and four clampers 4, 4, provided on each shuttle 3, respectively. . . . and an actuator 5 consisting of a cylinder that moves the shuttles 3, 3 along the roller conveyor 1 by a predetermined stroke (distance between the centers of two adjacent stations), and a set of four clampers 4, 4, …
The shuttles 3, 3 are configured to move downward while gripping the wheel H to convey the wheel H. 6 is a lifter that moves the roller conveyor 1 and shuttle 3 up and down.

The specific structure of the weight mounting station _S3 of the balance weight mounting device is shown in FIGS. 3 to 5. That is, above the roller conveyor 1 at the weight mounting station _S3 , there is a wheel H located at the weight mounting station _S3 .
a supply means 20 for supplying various types of balance weights to positions on both sides of the pedestal 12 that are relatively far away from the mount 12; and a pedestal 1 that receives predetermined balance weights from the supply means 20 and is provided near the wheel H.
A pair of left and right delivery means 30,
30, and attachment means 4 for attaching the balance weight on the pedestal 11 to a predetermined position on the surface of the wheel H.
0 is provided.

The supply means 20 includes parts feeders 21 and 2 that supply balance weights W that are frequently supplied.
1, . . . and a cartridge type feeding device 22, 22, .
It is composed of... parts feeder 21
The system applies an excitation force to a parts feeder main body 23 that stores a very large number (200 to 300) of balance weights, and sequentially supplies the balance weights via a shutter 24. A large number (about 30) of balance weights are stacked and stored inside the 25.
Cylinder 2 pushes out the balance weight at the bottom.
6, it is pushed out from inside the cartridge 25 and supplied. Each weight take-out position of the parts feeder 21 and the cartridge type supply device 22 (weight take-out portion 20a of the supply means 20)
are arranged substantially linearly on both the left and right sides of the pedestal 12.

Further, the delivery means 30 includes a delivery hand 32 having three holding parts 31, 31, 31 made of electromagnets that attract and hold a balance weight at the tip thereof. The transfer hand 32 is driven by an electric motor 33 via a chain structure 34 and is provided to run on a guide rail 35, and the guide rail 35 is connected to the weight transfer position of the receiving table 11 and the supply means 20. It is located approximately at the center between the weight take-out part 20a of the supply means 20 and extends parallel to the center line of the weight take-out part 20a of the supply means 20. Further, the delivery hand 32 is configured to horizontally rotate 180 degrees around its base end (end on the guide rail 35 side) with the guide rail 35 in between by the operation of a rotary actuator 36. Furthermore, the delivery hand 32
The three holding parts 31, 31, 31 are provided at the tip of the steel wheel and the aluminum one.
This is because the balance weights corresponding to the piece wheel and the aluminum two-piece wheel each require a unique holding part 31.

Furthermore, the mounting means 40 includes a cylinder 41,
41 is driven by a synchronous link mechanism 42, 42 and moves up and down along guide rails 43, 43, and a lifting body 44 is supported at the lower part of the lifting body 44 via a bearing 45, and is driven by the operation of an electric motor 46. A rotating turntable 47 and three driving hands 49, 4 supported in a suspended state by the turntable 47 via single-axis tables 48, 48, 48, respectively.
9,49. The three single-axis tables 48 , 48 , 48 extend radially from the rotation center side of the rotary disk 47 and are arranged circumferentially at intervals of 120 degrees, and are attached to each single-axis table 48 . The driving hand 49 is provided so as to be movable along the uniaxial table 48 between the pedestal 11 above the roller conveyor 1 and the weight mounting position on the surface of the wheel H on the roller conveyor 1. Furthermore, a wheel fixing member 50 is provided at the center of rotation of the rotary disk 47 to abut the center of the wheel H on the roller conveyor 1 and hold the wheel H fixedly when the elevating body 44 is lowered.

As shown in detail in FIGS. 6 and 7, the driving hand 49 includes a holding section 51 made of an electromagnet that attracts and holds the balance weight W, and a holding section 51 that holds the balance weight W by suction.
A rotor actuator 53 that rotates the holding part 51 by 90 degrees around the axis via a belt 52 etc., and a cylinder 54 that makes the holding part 51 project downward (towards the wheel H on the roller conveyor 1) when the balance weight W is driven. , a copying spring 55 provided to retractably support the holding part 51 when a reaction force of a predetermined magnitude or more is applied to the holding part 51 during driving of the balance weight W, and driving of the balance weight W. A pair of presser fittings 5 that press down the wheel H when
6,56. In addition, the driving hand 49
The reason why three of these are provided on the rotary plate 47 is that the delivery means 30
At the time, a holding part 31 is attached to the tip of the delivery hand 32.
This is for the same reason as why we provided three.

On the other hand, under the roller conveyor 1 at the weight attachment station S ₃ , as well as above the roller conveyor 1, there is a supply means 60 for supplying various types of balance weights, and a predetermined balance weight is received from the supply means 60, and a roller A pair of left and right transfer means 70, 70 transport the balance weights on the pedestals 13 to the pedestals 13, 13 provided near the wheels H located at the weight mounting station _S3 on the conveyor 1, and transfer the balance weights on the pedestals 13 to the wheels H. Attachment means 80 is provided to be attached at a predetermined position on the back surface of. The supply means 60 and the delivery means 70 have the same configuration as the supply means 2 and the delivery means 30 above the roller conveyor 1, respectively, and the delivery hand 71 of the delivery means 70 is similar to the delivery hand 32 of the delivery means 30. take action. In both the upper and lower supply means 20, 60, one parts feeder main body 23 is used as the parts feeder 21 that supplies the same type of balance weight.

The mounting means 80 also includes an elevating body 83 that moves up and down along a guide rail 82 by the operation of a cylinder 81, and a bearing 8 mounted on the upper part of the elevating body 83.
a rotary disk 85 that is supported via
Three driving hands 87, 87, 8 are attached to the top via single-axis tables 86, 86, 86, respectively.
7. The above three single-axis tables 8
6, 86, and 86 extend in the radial direction from the rotation center side of the rotary disk 85 and are arranged circumferentially at intervals of 120 degrees, and the driving hands 87 attached to each of the single-axis tables 86 are The single axis table 8
7 between the receiving table 13 on the rotary disk 85 and the weight mounting position on the back surface of the wheel H on the roller conveyor 1.

As shown in detail in FIGS. 8 and 9, the driving hand 87 includes a holding part 88 made of an electromagnet that attracts and holds the balance weight, and a holding part 88 that holds the balance weight by suction.
a rotary actuator 89 that swings and rotates the hand body 180 degrees up and down while rotating the hand body 90 degrees around its axis; and a cylinder that projects the holding section 88 upward when driving the balance weight with the holding section 88 facing upward. 90, and a copying spring 91 provided to support the holding portion 88 in a retractable manner when a reaction force of a predetermined magnitude or more is applied to the holding portion 88 during driving of the balance weight. When attaching the balance weight to the back surface of the wheel H using this driving hand 87, the balance weight is aligned in advance at the balance measuring station _S2 so that the weight attaching position on the back surface of the wheel H is always at a constant position at the weight attaching station _S3 . The wheel H is conveyed to the weight attachment station _S3 , and in this state, the holding part 88 of the driving hand 87 sets a predetermined balance weight against the back surface of the wheel H on the roller conveyor 1 from the distance a between the rollers of the roller conveyor 1. It is designed to be installed by driving it into the mounting position.

Next, the operation of the above embodiment will be explained with reference to the flowchart shown in FIG.

First, at the positioning station _S1 , the wheel H on the roller conveyor 1 is positioned.
After confirming that this positioning has been completed, the wheel H is conveyed on the roller conveyor 1 to the balance measuring station _S2 . At the balance measuring station _S2 , the wheel balancer rotates the wheel H and measures the amount of unbalance of the wheel H and its position, thereby recognizing the designated weight and the weight mounting position. Then, after once stopping the rotation of the wheel H, the wheel H is moved (rotated) so that the weight attachment position on the back surface of the wheel H comes to a predetermined designated position, and it is confirmed whether this movement is completed.

On the other hand, in the conveying device 2, the roller conveyor 1
Transfer the upper wheel H from the positioning station S ₁ to the balance measuring station S ₂ and from the balance measuring station S ₂ to the weight mounting station.
When sequentially conveying to S ₃ , first, the clamper 4 closes and grips the wheel H on the roller conveyor 1 when the lifter 6 is in the lowered state (that is, the roller conveyor 1 and the shuttle 3 are in a lower position). . Subsequently, after the lifter 6 rises, the shuttle 3 flows down to transport the wheel H on the roller conveyor 1 to the next station. Thereafter, the lifter 6 is lowered, the clamper 4 is opened and the grip on the wheel H is released, and then the shuttle 3 returns to the original position. By repeating the above operations, the wheels H are sequentially conveyed to the downstream station. here,
Wheel H balances on roller conveyor 1 from measuring station S ₂ to weight mounting station S ₃
When the wheel H is transported to the balance measurement station _S2 , the weight mounting position on the back surface of the wheel H is aligned to a predetermined indicated position, and the wheel H is transferred to the weight mounting station _S3 while being held by the clamper 4. Since it is being transported, the wheel H is attached to the weight mounting station S ₃
Then, the weight mounting position on the back side is always located at a constant position corresponding to the distance a between the rollers of the roller conveyor 1.

Before the wheel H is transported to the weight mounting station _S3 by the transport device 2, at the weight mounting station _S3 ,
The supply means 20 and 60 are provided by the delivery means 30 and 70 located on both the upper and lower sides of the roller conveyor 1, respectively.
from the weight take-out parts 20a, 60a of the cradle 1.
A predetermined balance weight is transferred to 1 and 13. That is, in the delivery means 30 above the roller conveyor 1, when a designated weight is instructed from the wheel balancer, the delivery band 32, which is waiting opposite the weight take-out part 20a of the supply means 20, first moves to the weight take-out part 20a.
The machine receives the specified balance weight W instructed by the user, then moves to the pedestal 11 side, drops the balance weight W into the pedestal 11, and then returns to the original position. Furthermore, in the delivery means 70 below the roller conveyor 1, the delivery hand 71 operates in the same manner.

On the other hand, in the mounting means 40 above the roller conveyor 1, when information that the balance weight W has been transferred to the pedestal 11 is received, the driving hand 49 first operates the rotary disk 47 and the single-axis table 48. The balance weight W is moved to the cradle 11 side by the holder 51, and the balance weight W is received from the cradle 11 by the holding part 51. Thereafter, the holding part 51 holding the balance weight W performs a retracting operation by a predetermined stroke (approximately 20 mm) by the operation of the cylinder 54. At this stage, the wheels H are
is transported to the weight installation station S ₃ by
Moreover, the lifter 6 of the conveyance device 2 is in a lowered state (that is, the roller conveyor 1 supporting the wheels H is located at a lower position).

Subsequently, the driving hand 49 moves the rotary disk 47 and
By the operation of the shaft table 48, the weight is moved above the weight mounting position on the surface of the wheel H located at the weight mounting station _S3 . Thereafter, the elevating body 44 is lowered, and the wheel H on the roller conveyor 1 is fixed by the wheel fixing member 50, and the driving hand 49 is brought close to the wheel H. After confirming that the elevating body 83 in the mounting means 80 below the roller conveyor 1 (described later) has completed its ascent, the holding part 51 holding the balance weight W is moved downward by the operation of the cylinder 54 in the driving hand 49. Attach the balance weight W by protruding it a predetermined stroke and driving it into a predetermined position on the surface of the wheel H. Thereafter, the elevating body 44 rises and returns to the original position.

Also, in the mounting means 80 below the roller conveyor 1, when information that the balance weight W has been transferred to the receiving table 13 is received, the driving hand 87 moves to the pedestal 13 side and receives the balance weight W from the pedestal 13, and the holding part 88 that holds the balance weight W performs a retracting operation. Subsequently, the driving hand 87 is moved to the holding portion 88 by the operation of the rotary actuator 89.
It swings up and rotates so that it faces upward, and moves downward to the weight mounting position (a predetermined position corresponding to the distance a between the rollers of the roller conveyor 1) on the back surface of the wheel H located at the _weight mounting station S3. Then, the shuttle 3 of the transport device 2
After confirming that it is not on the weight mounting station S ₃ , that is, that it has returned to its home position,
The elevating body 83 rises and the driving hand 87 approaches the roller conveyor 1. In this state, the holding portion 88 of the driving hand 87 projects upward by a predetermined stroke from the gap a between the rollers of the roller conveyor 1 by the operation of the cylinder 90, and the balance weight W is driven into a predetermined position on the back surface of the wheel H to be attached. Thereafter, the elevating body 83 descends and returns to the original position, and the driving hand 87 swings down and rotates so that the holding portion 88 faces downward.

Then, at the weight attachment station _S3 , the wheel H, on which a predetermined amount of balance weights are attached at predetermined positions on both the front and back sides, is transferred to the transport device 2, where the wheel H to which the balance weights are next attached is transferred from the balance measuring station _S2 . When the lifter 6 rises to transport the weight to the mounting station S ₃ and the shuttle 3 flows down, it is carried downstream from the weight mounting station S ₃ so as to be pushed by the wheel H gripped by the clamper 4 .

In this way, in the above embodiment, the supply means 2
a delivery means 30 for transferring a predetermined balance weight W from the weight take-out parts 20a, 60a of 0, 60 to the cradle 11, 13 near the wheel H, respectively;
Each delivery hand 32, 71 of 70 is attached to the attachment means 4.
Regardless of the completion of mounting the balance weight W to the wheel H by the driving hands 49 and 87 of 0 and 80, it is possible to go to receive the next balance weight W based on the unbalance information from the wheel balancer, and the mounting means Since the moving distance of the driving hands 49, 87 of 40, 80 is only a short distance between the cradle 11, 13 near the wheel H and the weight mounting position of the wheel H, the time for mounting the balance weight W is significantly reduced. Can be shortened.

Further, the above-mentioned delivery means 30, 70 and attachment means 40, 80 are all provided with hands 32, 71, 4.
9 and 87 only move within a narrow range, and the mechanism for moving them is simple and compact, so the balance weight attachment device can be made more compact.

Furthermore, in the above embodiment, since the balance weights W are simultaneously mounted on both the front and back sides of the wheel H using one weight mounting station _S3 , the mounting time can be shortened and the device can be made more compact. You can aim even further.

In the above embodiment, the weight mounting position on the back side of the wheel H is always set at a constant position in the weight mounting station _S3 , but instead of this, the weight mounting position on the front side of the wheel H is set at a constant position. It is also possible to keep the wheel H at a constant position at all times, and in this case, the means for supporting the center portion of the wheel H so that the means for supporting the wheel H from the back side does not interfere with the attachment means 80 when attaching the weights is used. All you have to do is set it up.

(Effects of the invention) As described above, according to the vehicle wheel balance weight mounting device of the present invention, in addition to the supply means and the attachment means, there is a delivery means for transferring the balance weight from the supply means to the cradle near the wheel. The delivery means can go to receive the next balance weight regardless of the completion of attachment of the balance weight by the attachment means, and the moving distance of the attachment means can be shortened.
The time required to attach the balance weight can be shortened, and the device can be made more compact.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Figure 1 is a plan view showing the overall configuration of the balance weight attachment device, Figure 2 is a side view of the same, and Figures 3 to 5 are views of the balance weight attachment device. The specific structure of the weight attachment station is shown, with FIG. 3 being a front view, FIG. 4 being a side view, and FIG. 5 being a partially cutaway plan view. FIG. 6 is a front view of the driving hand for the wheel surface, FIG. 7 is a side view of the same, FIG. 8 is a front view of the driving hand for the back surface of the wheel, and FIG. 9 is a side view of the same. FIG. 10 is a flow chart for explaining the operation of the balance weight attachment device. S ₂ ... Balancer measurement station, S ₃ ... Weight mounting station, H... Wheel, 2...
Conveying device, 20, 60... Supply means, 30, 70
... Delivery means, 40, 80 ... Attachment means, 1
1, 13... cradle.

Claims (1)

[Claim for Utility Model Registration] Wheels are sequentially transported by a transport device to a balance measuring station and a weight mounting station located downstream thereof, and the amount of unbalance of the wheel and its position are measured by a wheel balancer at the balance measuring station. With,
A vehicle wheel balance weight mounting device for mounting a predetermined amount of balance weights on each of the front and back surfaces of the wheel at predetermined positions based on unbalance information from the wheel balancer at the weight mounting station, the wheel on the weight mounting station a supply means for supplying various types of balance weights to a position remote from the supply means; a delivery means for receiving a predetermined balance weight from the supply means and conveying it to a receiving stand provided near the wheel on the weight mounting station; A balance weight mounting device for a vehicle wheel, comprising mounting means for mounting a balance weight on a pedestal to the wheel.