JPH09234805A - Method and apparatus for mounting balance weight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to simplify a balance weight mounting operation in a short time and to automate it with a small facility investment by eliminating the mounting of the weight by welding or a bolt without necessity of a perforating work. SOLUTION: The balance weight mounting position of a rotor is coated with predetermined quantity of weight sol, and adhesively connected. The sol of the predetermined quantity is discharged from the balance weight supplying unit 8 of a substantially syringe structure or discharged by a manual hand gun to coat it. The apparatus for mounting the weight comprises a balance measuring unit 1 for measuring the balance of the rotor, and a balance weight supplying unit 8 for coating the predetermined quantity of the sol to the balance weight mounting position to match the measured value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a balance weight of a rotating body and its apparatus.

[0002]

2. Description of the Related Art Generally, a rotating body of a motor, a rotating body of an automobile part such as a tire, a crankshaft, a propeller shaft, a flywheel, a camshaft, etc., a rotating body for power transmission of a ship, a machine and other devices have no shake. In order to maintain smooth rotation, the weight is partially corrected for balance. As a method for balancing the rotating body, conventionally, for example, a hole is formed by machining to reduce the amount thereof, or a balance weight is made of metal or the like and then it is attached by welding or bolts. In the case of automobile tires, a measure is usually taken to secure a mass of lead to a mounting piece to form a balance weight and to secure this balance weight to the edge of the disc wheel. Since automobile tires rotate continuously at high speed, the amount of unbalance has a large effect on vehicle performance.Therefore, in automobile production lines, the amount of unbalance on the upper and lower surfaces can be accurately measured using a tire balance measuring device. The balance weight is manually attached to the disc wheel according to the measured values (position, weight).

In the current tire balance weight mounting work, as shown in FIG. 5, the tire T is set on the balance measuring device B (setting process), the tire balance is measured, and the tire T is once removed from the balance measuring device B. Te implanted balance weight W ₁ in the balance weight mounting position of the top surface (the working step 1), then invert the tires T by driving the balance weight W ₂ in the balance weight mounting position of the lower surface (working step 2), after the implantation The tire T is carried out.

In this case, the tire balance weight has a lead piece N fixed to a metal mounting piece (spring material) S as shown in FIG. 7 and set to a predetermined weight. Usually, as shown in FIG. 6, a mallet H or the like is driven into a predetermined position on the peripheral portion of the disc wheel D of the tire,
The attachment piece (spring material) S is bitten and fixed.

In addition, the balance weight mounting work of the propeller shaft of an automobile uses a balance measuring device to accurately measure an unbalance amount and a position, and an arc (MIG) welding machine is used to perform metal measurement based on the measured values. The formed balance weight is welded.

[0006]

The above-mentioned conventional balance weight mounting method is troublesome and inefficient because it is all performed by physical means or manual work, and it is difficult to attach the balance weight by welding or bolts. There is a problem that the accuracy of the balance correction is lowered due to the displacement of the position. And according to the conventional tire balance weight mounting method,
There are the following problems. The minimum unit of balance weight is about 5 g, and it is difficult to make minute correction below this. Since given work time is short, work mistakes frequently occur. By the way, in the case of the 60-second line, the driving time for one balance weight is 60 seconds / 5 (one unit).
It is only 6 seconds when calculated at 2 points (upper surface and lower surface). The work of driving the balance weight is complicated. The work procedure is (a) tire loading (b) balance weight removal (c) driving (d) tire reversal (e) balance weight removal (f) driving (g) tire unloading, which requires a lot of work. Very annoying. Moreover, in the 60-second line, since five tires must be processed per tire, these series of operations must be performed in only 12 seconds for one tire. Tires are fairly heavy and labor intensive, and there is a strong demand for improvement due to dirt work. To enable automation, a large amount of unprofitable capital investment is required. Further, according to the conventional balance weight mounting method of the propeller shaft, there are the following problems. After the balance measurement, a clamping step is required to fix the balance weight at the mounting position, and unclamping is required after arc welding. After welding the balance weight, a painting process for the weld is required to prevent rust. It is difficult to miniaturize the balance correction, and the correction accuracy deteriorates.

The present invention has been made in order to solve the above-mentioned various problems, and does not require any physical means such as drilling work in the balance correction of the rotating body, and the balance weight is manually welded or bolted. To provide a balance weight mounting method and its equipment, which does not require the mounting work of the balance weight, can perform the balance weight mounting work easily in a short time, enables the miniaturization of the correction, and enables automation with a small capital investment. With the goal. For this purpose, the present invention provides a balance weight by manufacturing a balance weight with a weight sol according to a balance measurement value of a rotating body, applying a predetermined amount to a predetermined position, and at the same time performing a chemical reaction and adhesive bonding. Is.

[0008]

As a means for technically solving the above-mentioned problems, the present invention provides a balance weight mounting method in which a predetermined amount of weight sol is applied to a balance weight mounting position of a rotating body and adhesive bonding is performed. Use as a summary. Here, the weight sol is characterized by being discharged by a predetermined amount from a balance weight supply device having a substantially syringe structure, or discharged by a predetermined amount by a manual hand gun or the like. In addition, the balance measurement device measures the balance of the rotating body, and in accordance with this balance measurement value, a predetermined amount of weight sol is discharged from the balance weight supply device having a syringe structure to the balance weight mounting position of the rotating body, or a manual hand gun, etc. The main point is a balance weight mounting method in which a predetermined amount is discharged and applied, and adhesive bonding is performed. Then, a step of measuring the balance measurement value by the balance measurement device, a step of applying a predetermined amount of weight sol to the balance weight attachment position by the balance weight supply device in accordance with the measurement value, and a step of adhesively joining the weight sol after cooling after application. The balance weight installation method including and is summarized. Furthermore, the gist of the present invention is a balance weight attachment device that includes a balance measurement device that measures the balance of a rotating body and a balance weight supply device that applies a predetermined amount of weight sol to the balance weight attachment position in accordance with the measured value. . Here, the balance weight supply device includes a cylinder having a discharge nozzle at its tip, a piston for advancing and retracting in the cylinder to discharge a predetermined amount of weight sol contained in the cylinder from the discharge nozzle, and a predetermined piston for this piston. And a drive mechanism for actuating the movement amount.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments in which the present invention is applied to a tire balance weight will be described below in detail with reference to the accompanying drawings. In FIG. 1, 1 is a tire balance measuring device, which is fixed to a frame 3 via a base 2,
It has a support column 5 which is axially rotated by a servo motor 4, and a receiving stand 6 is attached to the upper part of the supporting stand 5, and a plurality of positioning pins 6a are provided on the receiving stand 6 so as to project therefrom.

Reference numeral 7 denotes a guide device provided on the upper portion of the frame 3 so that the tire T can be clamped and lowered to be placed on the receiving table 6. That is, the guide device 7 has a plurality of rollers 7a which are simultaneously opened and closed horizontally in the horizontal direction by the cylinder mechanism and which are vertically moved. The rollers 7a sandwich the tire T from the outside and gently descend, The tire T is set by placing the bolt holes of the disc wheel D on the pedestal 6 in alignment with the positioning pins 6a. At this time, if the bolt hole of the disc wheel D does not fit the positioning pin 6a, the roller 7a can be rotated and the tire T can be slightly rotated to perform the alignment.

After the tire T is set, the guide device 7 is retracted and the servo motor 4 of the tire balance measuring device 1 is operated to perform the tire T balance measuring step.

After the balance measurement is completed, a step of applying a predetermined amount of weight sol to the balance weight attachment position on the upper surface is performed by the balance weight supply device 8 according to the measured value.

The balance weight supply device 8 is arranged so as to be able to move up and down at appropriate places on the upper surface side and the lower surface side, and has a discharge nozzle 9 at its tip as shown in FIGS. 2 and 3, and a cylinder 10 inside this cylinder 10. To move the weight sol 13 accommodated in the cylinder 10 back and forth.
And a piston 11 for discharging a predetermined amount from the piston 1.
1 is provided with a drive mechanism 12 for operating a predetermined movement amount.

The drive mechanism 12 operates a servomotor 12a with a speed reducer to transmit its rotation to a ball screw 12c via a belt 12b, and the piston 11 screwed to the ball screw 12c is guided along a guide bar 12d. The piston 11 can be moved back and forth in the cylinder 10 by moving it forward and backward. The movement amount of the piston 11 is controlled by the rotation speed of the servo motor 12a.

FIG. 4 shows a supply system for feeding the weight sol 13 to the balance weight supply device 8. The weight sol 13 is, for example, a mixture of an adhesive and a fine powder of rock, and is stored in the tank 14. 110 ° C
Supply pump 1
5 is supplied into the cylinder 10 via the supply pipes 16 and 17. In this case, two tanks 14 and supply pumps 15 are installed so that they can be switched and used. Reference numeral 18 denotes a cylinder mechanism for moving the balance weight supply device 8 up and down.

The balance sol 13 is positioned after the balance weight supply device 8 descends after the balance measurement, and is applied in a predetermined amount to the balance weight mounting position on the upper surface, that is, this becomes the balance weight. At the time of this application, the servo motor 4 of the tire balance measuring device 1
Operates to rotate the tire T slightly at a slight speed so that the weight sol 13 is applied with a constant width along the edge of the disc wheel D. In addition, as shown in FIG.
It is also possible to provide a bypass circuit 17 ′ in and to discharge and apply the balance weight amount calculated by the CPU by the manual hand gun 20 or the like. Also, the supply pipes 16 and 1
7 (including 17 ') is preferably set and maintained at an optimum temperature by a tape heater (not shown) from the viewpoints of improving the dischargeability and accelerating the chemical reaction.

After the weight sol 13 is applied, the cooling device 19 arranged near the balance weight supply device 8 descends, and, for example, a step of spraying dry ice cooling gas to cool the weight sol 13 for adhesive bonding is performed. This adhesive bonding completes the attachment of the balance weight. The weight of the balance weight can be calculated by the coating amount because the specific gravity of the weight sol 13 is preset, and the coating amount can be determined by the moving amount of the piston. The instruction of the piston movement amount is performed by the CPU according to the balance amount measurement value.

In this way, the balance weight attaching process on the upper surface of the tire is completed, and the balance weight attaching process on the lower surface of the tire is continued. That is, in accordance with the measured value of the tire balance, a predetermined amount of weight sol is applied to the balance weight mounting position by the balance weight supply device 8'located on the lower side, and the cooling device 19 'disposed on the lower side. To cool and bond the weight sol.

After mounting the balance weight on the lower surface of the tire, the tire T is carried out by the guide device 7 and the next tire is supplied to the guide device 7 to continue the work.

Here, the above series of operations can be summarized as follows in the order of steps. (1) Tire balance measurement (measurement of position and amount) (2) Stop at the balance weight mounting position on the upper surface of the tire (3) Lower balance weight application nozzle on the upper surface (4) Tire slightly rotates (servo motor operation) / predetermined amount of weight sol Discharge (5) Raising the balance weight coating nozzle on the upper surface (6) Rapid cooling of the coated weight sol (dry ice cooling gas spray) Rapid cooling is performed to improve production efficiency, but natural cooling may be performed in some cases. (7) Actuated to the balance weight mounting position on the lower surface of the tire (8) Raise the balance weight application nozzle on the lower surface (9) Rotate the tire slightly (servo motor operation) / discharge a predetermined amount of weight sol (10) Lower the balance weight application nozzle on the lower surface (11) ) Rapid cooling of the applied weight sol (dry ice cooling gas spray) Rapid cooling is performed to increase production efficiency, but natural cooling may be performed in some cases.

In the above example, the balance weight is conventionally attached to both the upper surface and the lower surface of the tire, but if the tire is simply regarded as one rotating body, the place where the balance weight should be attached is the same as other rotating bodies. It may be provided at one place. For example, as shown in FIG. 8, the balance weight W is adhesively joined to a predetermined place on the inner surface side of the disc wheel D (that is, the inner side when the tire is attached to an automobile).

In this case, the tire balance measuring device 1
The tire balance can be measured by using the balance weight supply device 8'to apply a predetermined amount of weight sol to the predetermined position (balance weight mounting position) of the disc wheel D in accordance with the measured value, and the cooling device 19 ′ Is cooled to solidify the weight sol, and the balance weight W is adhesively bonded.

In this way, if the balance weight W is adhesively bonded to the inner surface side of the disc wheel D, the balance weight W of the tire cannot be seen from the outside when it is mounted on a vehicle, and the appearance is good, and the balance weight should by any chance. Even if W is taken off while running, it is hardly flung to the outside of the vehicle, so it does not pose a danger to other vehicles and is preferable for traffic safety.

Next, an embodiment in which the present invention is applied to a propeller shaft which is a vehicle drive transmission shaft will be described. FIG. 9 shows an example of the propeller shaft P. A portion P ₁ connected to the engine side and a portion P ₂ connected to the differential gear side are connected via a connector Q. A balance weight is attached to the propeller shaft P before being connected by the connector Q.

The P ₁ portion on the engine side is subjected to balance measurement by rotating the shaft using a balance measuring device (not shown), and the weight sol of the present invention is applied to a predetermined position in a predetermined amount based on the measured value. , The balance weight W is adhesively joined. The balance weight W can be easily attached in a short time even if there are a plurality of attachment positions and the coating amount is different. The same construction method is used for the P ₂ portion on the differential gear side.

Compared with the conventional welding method, this mounting method can significantly reduce the working time, replace the material with a cheap material, and eliminate the rust preventive work, thereby reducing the manufacturing cost. Further, there is an advantage that the balance correction value can be made minute and the quality is improved because it does not rust after mounting.

INDUSTRIAL APPLICABILITY The present invention can be widely applied as a balance weight of a rotating body of other automobile parts, a rotating body of a motor, a ship, a machine and other rotating bodies for power transmission. The balance weight supply device according to the present invention can be applied regardless of the type and size of the rotating body, and a sufficient amount of weight sol is applied to the balance weight mounting position of each rotating body, and the balance sol is sufficiently bonded. be able to.
Therefore, it is not necessary to make a hole in the rotating body by machining to reduce the amount of the portion, or to form a balance weight with metal or the like and attach it by welding or bolts as in the conventional case. The supply of the weight sol is not limited to the discharge of a predetermined amount from the balance weight supply device having a substantially syringe structure, and a predetermined amount may be discharged by a manual hand gun or the like for application.

FIG. 10 shows a basic flow chart of the balance weight adhesive bonding according to the present invention. still,
The primer is applied to the mounting position when the rotating body is made of, for example, an aluminum material or a resin material, or when there is no coating film on the surface of the rotating body. The balance weight is adhered through this primer. This is because. In other words, it is possible to perform adhesive bonding of balance weight to aluminum materials, resin materials and other dissimilar materials, and if it is pretreated with an optimal primer according to the material, it will have the same performance as the coating surface Was confirmed by.

[0029]

As described above, according to the present invention,
When attaching the balance weight of the rotating body, the weight sol was applied at a predetermined position in a predetermined amount in accordance with the balance measurement value of the balance measuring device, and the balun weight was attached almost simultaneously with the production of the balance weight. Since it is completed, there is no need for physical means such as drilling work as in the past, installation work of the balance weight by welding or bolts is unnecessary, and the installation work of the balance weight can be done easily in a short time, and it is inexpensive. It is possible to reduce the cost by using various materials, miniaturize the balance correction amount and improve the correction accuracy, and it is possible to improve the quality because the rust does not occur after mounting and the position does not shift. In particular, in the case of tire balance weight, the conventional work of driving the balance weight is unnecessary, work mistakes can be eliminated, workers can be freed from handling heavy tires, and automation can be performed with a small capital investment etc. Exerts the excellent effect of.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment when the present invention is applied to a tire balance weight.

FIG. 2 is a schematic plan view of a balance weight supply device.

FIG. 3 is a sectional view of a main part of the balance weight supply device.

FIG. 4 is an explanatory diagram showing a supply system of weight sol.

FIG. 5 is an explanatory view showing a conventional tire balance weight attaching step.

FIG. 6 is an explanatory view showing a conventional balance weight mounting method.

FIG. 7 is a perspective view of a conventional balance weight.

FIG. 8 is an explanatory diagram showing an example in which a balance weight is formed on the inner surface of the disc wheel.

FIG. 9 is a perspective view showing an embodiment when the present invention is applied to a balance weight of a propeller shaft.

FIG. 10 is a block diagram showing a basic flow chart of balance weight adhesive bonding.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tire balance measuring device 2 ... Base 3 ... Frame 4 ... Servo motor 5 ... Support 6 ... Receiving base 6a ... Positioning pin 7 ... Guide device 7a ... Roller 8 ... Balance weight supply device 9 ... Discharge nozzle 10 ... Cylinder 11 ... Piston 12 ... Drive mechanism 12a ... Servomotor 12b ... Belt 12c ...
Ball screw 12d ... Guide bar 13 ... Weight sol 14 ... Tank 15 ... Supply pump 16, 17 ... Supply pipe 18 ... Cylinder mechanism 19 ... Cooling device 20 ... Manual hand gun T ... Tire P ... Propeller shaft W ... Balance weight

Claims (6)

[Claims] 1. A balance weight mounting method characterized in that a predetermined amount of weight sol is applied to a balance weight mounting position of a rotating body, and then bonded and bonded. 2. The balance weight mounting method according to claim 1, wherein the weight sol is discharged by a predetermined amount from a balance weight supply device having a substantially syringe structure, or discharged by a manual hand gun or the like. 3. A balance measuring device measures balance of a rotating body, and a predetermined amount of weight sol is discharged from a balance weight supplying device having a substantially syringe structure at a balance weight mounting position of the rotating body according to the balance measurement value.
Alternatively, a balance weight mounting method is characterized in that a predetermined amount is discharged by a manual hand gun or the like to apply and adhesively join. 4. A step of measuring a balance measurement value of a rotating body by a balance measurement device, a step of applying a predetermined amount of weight sol to a balance weight attachment position by a balance weight supply device according to the measurement value, and cooling after application. A balance weight mounting method including a step of adhesively bonding a weight sol. 5. A balance weight attaching device comprising: a balance measuring device for measuring the balance of a rotating body; and a balance weight supplying device for applying a predetermined amount of weight sol to the balance weight attaching position according to the measured value. 6. A balance weight supply device includes a cylinder having a discharge nozzle at its tip, a piston for advancing and retracting in the cylinder to discharge a predetermined amount of weight sol contained in the cylinder from the discharge nozzle, and the piston. 6. A drive mechanism for operating a predetermined movement amount.
Balance weight attachment device described.