JP2952779B2 - Balance weight joining device for torque converter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Industrial Field of the Invention The present invention relates to a torque converter for transmitting torque from an internal combustion engine to a driven side so as to correct the imbalance of the torque converter. The present invention relates to an apparatus for joining weights.

2. Description of the Related Art Conventionally, there has been known a technique in which an unbalance of a rotating body such as a torque converter or a propeller shaft is measured, and the outer periphery of the rotating body is padded by seam welding to correct the detected unbalance. (See JP-A-63-40829).

(3) Problems to be Solved by the Invention However, when the above-described conventional unbalance correction method is applied to the unbalance correction of the torque converter, the casing of the torque converter is locally heated by the seam welding torch, and the casing is distorted. In addition, there is a problem that not only may occur, but it is difficult to form an accurate amount of overlay due to instability of the welding conditions, and there is a problem that the working environment is deteriorated by the torch spark.

In order to avoid such inconvenience, it is conceivable to select an appropriate balance weight of various weights prepared in advance and weld it to the casing of the torque converter. However, in such a method, the types of the balance weight are limited. It is difficult to completely correct the imbalance.

The present invention has been made in view of the above circumstances, and provides an unbalance correction device for a torque converter capable of precisely correcting the unbalance without causing distortion due to heating of a casing of the torque converter. The purpose is to:

B. Configuration of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention measures an unbalance of a torque converter and adjusts a balance weight of the torque converter to correct the unbalance. A balance weight joining device for a torque converter to be joined to an outer periphery, a rotary drive mechanism for rotatably supporting the torque converter, a feeding mechanism for feeding a strip-shaped metal plate by a predetermined length, and cutting the fed strip-shaped metal plate. A cutting mechanism for forming a balance weight by carrying out the process, a carrying mechanism for carrying the formed balance weight and abutting the outer periphery of the torque converter supported by the rotary drive mechanism, and a welding mechanism for spot welding the balance weight to the torque converter. Wherein the transport mechanism is movable between the cutting mechanism and the torque converter. Swing arm, a movable plate slidably supported by the swing arm, a chuck pawl provided on the movable plate to be openable and closable, and a spring for biasing the movable plate in the sliding direction. Become
When the balance weight gripped by the chuck jaws comes into contact with the torque converter due to the movement of the swing arm,
The movable plate slides against the biasing force of the spring, and the balance weight is elastically pressed against the torque converter. At this time, it is desirable to employ laser welding or beam welding as the welding mechanism.

(2) Operation According to the balance weight joining device for the torque converter described above, the strip-shaped metal plate fed by the feeding mechanism is cut into a predetermined length by the cutting mechanism to form the balance weight. This balance weight is brought into contact with the outer periphery of the torque converter rotatably supported by the rotary drive mechanism by the transport mechanism, and is spot-welded by the welding mechanism. When the balance weight gripped by the chuck claw of the movable plate slidably provided on the swing arm of the transfer mechanism abuts the outer periphery of the torque converter, the movable blade slides against the biasing force of the spring by the reaction force. By doing so, the balance weight is elastically pressed against the outer periphery of the torque converter, so that the balance weight can be prevented from being displaced and can be accurately welded to a correct position.

(3) Example Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view of the balance weight supply mechanism, FIG. 2 is an overall plan view of the balance weight welding mechanism, and FIG. FIG. 4 is a sectional view taken along the line III-III of FIG. 2, and FIG. 4 is a sectional view taken along the line IV-IV of FIG.
It is a line sectional view.

As shown in FIG. 1, the balance weight supply mechanism 31
Is for cutting a band-shaped metal plate 33 wound on a reel 32 into a predetermined length and forming a balance weight 34 to be welded to the outer periphery of the torque converter T.
33, and a cutting mechanism for the strip-shaped metal plate 33.

The feeding mechanism of the strip-shaped metal plate 33 is a rack that reciprocates by meshing with a pinion 36 that is rotationally driven by a feeding servomotor 35.
An L-shaped driving plate 38 supported by a driving plate 38 is provided. A pressing cylinder 40 supported above the driving plate 38 via a bracket 39 has a band-shaped metal plate 33 between the driving cylinder 38 and the pressing cylinder 40. The pressing plate 41 is provided so as to be able to move up and down so as to sandwich the sheet. The reel 32 is mounted on the output shaft of a tensioning / releasing motor 42 so as to sequentially feed the strip-shaped metal plate 33, and on the upper portion of the strip-shaped metal plate 33 fed from the reel 32, the strip-shaped metal plate 33 is provided.
A limit switch 43 for detecting the tension of the motor and controlling the driving of the tension loosening motor 42 is provided.

The cutting mechanism for the band-shaped metal plate 33 drives a cutting table 44 provided adjacent to the moving end of the driving plate 38 and a clamp member 45 for fixing the tip of the band-shaped metal plate 33 to the cutting table 44. Cylinder 46 for clamping, and a fixed metal strip
A cutting cylinder 48 for driving a cutter 47 that cuts 33 in cooperation with the cutting table 44 is provided. Then, the leading end of the fed strip-shaped metal plate 33 is cut by the cutter 47 while being held by a pair of chuck claws 68 described later, and a balance weight 34 having a predetermined length is formed.

As shown in FIGS. 2 to 4, the balance weight joining mechanism 49 includes a transport mechanism for the balance weight 34, a welding mechanism for spot-welding the transported balance weight 34 to the outer periphery of the torque converter T, and a torque converter T. And a rotation drive mechanism for supporting and rotating the rotation.

The transport mechanism of the balance weight 34 is slidably supported by two guide rods 50, connected to the piston rod 52 of the moving cylinder 51, and reciprocated in a direction parallel to the feed direction of the strip-shaped metal plate 33. The base 53 is provided. Base
On the upper surface of 53, two guide rods 54 arranged in a direction orthogonal to the guide rods 50 are supported, and sliders 55 slidably supported by both guide rods 54 are mutually connected by connecting rods 56. It is connected. A base block 57a of a swing arm 57 is rotatably supported in the middle of the connecting rod 56, and a U-shape provided at the tip of a piston rod 60 of a swing cylinder 59 supported on a base 53 via a bracket 58. Knuckle 61 is connected. A cam plate 62 is fixed to the upper surface of the base 53 in parallel with the guide rod 54, and a roller 63 provided on a lower side surface of the base block 57a is engaged with a cam groove 62a formed in the cam plate 62. I agree. Accordingly, when the base block 57a is retracted along the guide rod 54 by contracting the rocking cylinder 59, the roller 63 is guided by the cam groove 62a of the cam plate 62, and the rocking arm 57 is moved together with the base block 57a by a chain line. Tilt to the horizontal position indicated by. When the swing cylinder 59 is extended, the swing arm 57 rises to the vertical position shown by the solid line while moving forward.

A fixed plate 64 is fixed to the end of the swing arm 57, and a movable plate 67 urged by a spring 66 is slidably supported by two guide pins 65 implanted on the front surface of the fixed plate 64. . On the front surface of the movable plate 67, in order to hold the balance weight 34 cut from the band-shaped metal plate 33,
A chuck cylinder 69 having a pair of openable and closable chuck claws 68 is provided. That is, when the swing arm 57 is in the inclined position shown by the chain line, the tip of the band-shaped metal plate 33 is supplied and gripped between the pair of chuck claws 68, and cut by the cutter 47 (see FIG. 1). . The chuck pawl 68 holding the balance weight 43 cut from the band-shaped metal plate 33 moves horizontally together with the base 53, and at the same time,
When the swing arm 57 rises to the position indicated by the solid line on 53, the balance weight 34 held by the chuck pawl 68 comes into contact with the side surface of the torque converter T supported by a rotation drive mechanism described later. At this time, the chuck 66 is slightly retracted due to the compression of the spring 66, and the balance weight 34 is pressed against the side surface of the torque converter T with a predetermined pressure.

The welding mechanism includes a welding cylinder 72 supported at the upper end of a column 70 via a bracket 71, and a welding tip 74 of laser welding or beam welding is attached to the tip of a piston rod 73. When the swing arm 57 stands up at the position indicated by the solid line, the welding tip 74 comes into contact with the side surface of the balance weight 34 gripped by the chuck claws 68 due to the extension of the welding cylinder 72.

The rotation drive mechanism includes a turntable 76 that rotatably supports the torque converter T on a base 75. A rotary servomotor 77 is provided at the upper part of the turntable 76 so as to be able to move up and down, and a drive member 78 that can be engaged with the center of the torque converter T is mounted at the lower end of its output shaft. A detecting device 79 for detecting the rotational position of the torque converter T is provided near the turntable 76.

Next, the operation of the embodiment of the present invention having the above-described configuration will be described.

In a state where the pressing cylinder 40 of the balance weight supply mechanism 31 is extended and the band-shaped metal plate 33 is sandwiched between the pressing plate 41 and the driving plate 38, the supply is performed according to the unbalance amount of the torque converter T detected in the previous process. When the servo motor 35 is driven by a predetermined amount, the drive plate is driven via the pinion 36 and the rack 37.
38 moves forward, and the tip of the strip-shaped metal plate 33 is inserted between the chuck claws 68 provided at the tip of the swing arm 57 at the horizontal position. Then, the chuck cylinder 69 is driven to hold the tip of the band-shaped metal plate 33 with the chuck claws 68, and the clamp cylinder 46 is extended and the band-shaped metal plate 33 is clamped by the clamp member 45.
33 is fixed on the cutting table 44. Next, when the cutting cylinder 48 is driven to cut the band-shaped metal plate 33 with the cutter 47, the balance weight 34 of a predetermined length held by the chuck claws 68 is separated from the band-shaped metal plate 33. At this time, when the belt-shaped metal plate 33 is fed out by the supply servomotor 35 and tension is applied to the band-shaped metal plate 33, the limit switch 43 is operated, and the tension-releasing motor 42 is rotated, and the belt-shaped metal sheet thus fed out. The reel 32 is driven to supplement the metal plate 33.

Now, when the balance weight 34 is gripped by the chuck pawl 68 as described above, the moving cylinder 51 of the balance weight joining mechanism 49 contracts to move the base 53 along the guide rod 54, and at the same time, The cylinder 59 extends to swing the swing arm 57 from the tilted position to the upright position. As a result, the balance weight 34 gripped by the chuck pawl 68 comes into contact with the side surface of the torque converter T supported by the turntable 76.

Subsequently, the rotation servomotor 77 is operated, and the turntable 76 is rotated to the predetermined position while detecting the rotation angle with the detection device 79 so as to position the balance weight 34 at the predetermined position on the outer periphery of the torque converter T. Next, the welding tip 72 provided at the tip of the piston rod 73 by extending the welding cylinder 72 is inserted between the pair of chuck claws 68,
The balance weight 34 gripped by the chuck claws 68 is spot-welded to the outer periphery of the torque converter T. At this time,
If the length of the balance weight 34 is short, only one spot is spot-welded, but if the length of the balance weight 34 is long, the rotation servomotor 77 is driven to rotate the torque converter T. While balance weight 34
Is spot-welded at multiple locations in the longitudinal direction.

When the balance weight 34 is welded to the torque converter T as described above, the balance weight to be welded to the torque converter T which is then carried on the turntable 76
In order to receive 34, first, the welding tip 7 retreats from the original position, then the base 53 returns to the original position, and the swing arm 57 swings to the inclined position, completing one cycle.

As described above, the embodiments of the present invention have been described in detail. However, the present invention is not limited to the embodiments, and various small design changes may be made without departing from the present invention described in the claims. It is possible to do.

For example, instead of joining the balance weight 34 to the side surface of the torque converter T by spot welding, the balance weight 34 can be joined by adhesion.

C. Effects of the Invention As described above, according to the method for joining the balance weights of the torque converter of the present invention, since the balance weights are formed by cutting the strip-shaped metal plate into a predetermined length, the balance of the various weights is previously determined. Not only is it unnecessary to prepare a large number of weights, but also the weight of the balance weight can be precisely adjusted. Further, since the balance weight is joined to the torque converter by spot welding or bonding, deformation of the casing of the torque converter due to the heat of conventional seam welding can be avoided.

According to the balance weight joining device of the torque converter of the present invention, the balance weight is formed by cutting the strip-shaped metal plate fed by the feeding mechanism into a predetermined length by the cutting mechanism. Without preparing a large number of balance weights, it is possible to obtain a balance weight having a precise weight. Further, since the balance weight is spot-welded by the welding mechanism, deformation of the casing of the torque converter due to the heat of conventional seam welding can be avoided. In addition, since the balance weight is welded while the torque converter is supported by the rotary drive mechanism, the balance weight can be easily welded along the outer periphery of the torque converter. In particular, since the balance weight is conveyed while being held by the chuck claws of the movable plate, it is possible to reliably prevent the balance weight from being displaced during conveyance.
In addition, when the balance weight gripped by the chuck pawl comes into contact with the outer periphery of the torque converter, the reaction force causes the movable plate to slide against the urging force of the spring, and the balance weight rebounds at a predetermined pressure on the outer periphery of the torque converter. Because the pressure is spontaneously pressed, the balance weight is accurately positioned on the outer circumference of the torque converter without precisely controlling the relative position of the swing arm with respect to the outer circumference of the torque converter.
Welding can be performed accurately at the correct position without causing displacement.

[Brief description of the drawings]

1 to 4 show one embodiment of the present invention.
FIG. 2 is a perspective view of the balance weight supply mechanism, FIG. 2 is an overall plan view of the balance weight joining mechanism, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, and FIG. FIG. 4 is a sectional view taken along line IV. 33: Band-shaped metal plate, 34: Balance weight, 57: Swing arm, 66: Spring, 67: Movable plate, 68
…… Chuck jaws, T …… Torque converter

Continuation of the front page (72) Inventor Shunji Kano 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (56) References JP-A-63-40829 (JP, A) JP-A-57-23834 (JP, A) JP-A-63-198842 (JP, A) JP-A-2-185331 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16H 41/28 F16F 15 / 32 G01M 1/30

Claims (2)

(57) [Claims] An apparatus for measuring the unbalance of a torque converter (T) and joining a balance weight (34) to an outer periphery of the torque converter (T) to correct the unbalance. A rotary drive mechanism for rotatably supporting the torque converter (T), a feeding mechanism for feeding the strip-shaped metal plate (33) by a predetermined length, and a balance weight by cutting the fed strip-shaped metal plate (33). A cutting mechanism for forming (34), a transport mechanism for transporting the formed balance weight (34) and making contact with the outer periphery of the torque converter (T) supported by the rotary drive mechanism, and the balance weight (34). A welding mechanism for spot welding to the torque converter (T), wherein the transport mechanism moves between the cutting mechanism and the torque converter (T). Noh swing arm (57), slidably supported by the movable plate to the swing arm (57) (67)
A chuck pawl (68) provided on the movable plate (67) so as to be openable and closable, and a spring (66) for urging the movable plate (67) in the sliding direction. ) Moves the chuck jaws (6
When the balance weight (34) gripped in 8) comes into contact with the torque converter (T), the movable rate (67) slides against the urging force of the spring (66), and the balance weight (34) becomes torque-tight. A balance weight joining device for a torque converter, characterized by being elastically pressed against a converter (T). 2. A torque converter according to claim 1, wherein said welding mechanism is a laser welding device or a beam welding device.