JP3046395B2 - Unbalance correction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unbalance correcting apparatus for correcting an unbalance after measuring an unbalance of a rotating body such as a rotor of an electric motor, and more particularly to an unbalance correcting apparatus for correcting the unbalance. The present invention relates to an unbalance correcting device configured to add a putty having a corresponding mass to the rotating body and press the putty by a shaper.

[0002]

2. Description of the Related Art In a conventional unbalance correcting apparatus, pressure is applied to a dispenser containing a putty serving as a balance weight to discharge an amount of putty corresponding to the amount of correction, and cut by a cutting device to cut the object to be corrected. It was configured to be transported to the correction location, crimped to the correction location by a crimping device, and shaped by a shaper to the surface of the putty.

Since the putty protrudes from the surface of the rotating body, it must be gently shaped by a shaper in order to suppress the generation of wind noise, and in order to prevent peeling due to centrifugal force during use. Needs to be strongly pressed with a crimping device and sufficiently adhered to the rotating body.

[0004]

However, since the size of the putty varies depending on the size of the unbalance amount, the conventional shaping device is incompletely shaped. For example,
If the amount of putty added to the surface of the rotating body is too large compared to the concave portion at the tip of the shaper, if pressed by the shaper, the portion that protrudes from the concave portion and protrudes will be shaped. In addition to this, there is a problem that it is easily peeled off from the surface of the rotating body.

[0005]

According to the present invention, a putty having a mass corresponding to the amount of imbalance of the rotating body is added to the rotating body, and the putty is pressed by a shaper. In the apparatus for correcting the balance, a means is provided in which a hard member is provided at the tip of the shaper, a recess having an arc-shaped cross section is provided at the tip of the hard member, and the inner surface of the recess is covered with a soft elastic member.

Further, the concave portion may be filled with a soft elastic member. Further, a shaper having the recesses of at least two types may be provided.

[0007]

According to the present invention, when the shaping section is advanced, the recess at the tip of the shaping section pushes the putty on the surface of the rotating body. At this time, the soft elastic member on the inner surface of the concave portion is elastically deformed. However, since the hard member is not deformed, the surface shape of the putty is shaped into a convex shape having a circular cross section corresponding to the concave portion having a circular cross section provided on the hard member.

At this time, the surface of the putty is pressed uniformly by the elastic restoring force of the soft elastic member. If the concave portion is filled with a soft elastic member, the soft elastic member is slightly elastically deformed when the putty is small, and the soft elastic member is largely elastically deformed when the putty is large.

In this manner, the shape of the putty is shaped into a shape corresponding to the shape of the hard member.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. In FIGS. 1, 2, 3, and 4,

1 is a rotating body, 2 is a putty added to correct imbalance of the rotating body, and 3 is a shaper.
31 is a shaping part as a hard member shaped by hard resin,
32 is a concave portion formed at the tip of the shaping portion 31, 33 is a sponge as a soft elastic member adhered to the inner surface of the concave portion 32, and 4 is a shaper pressing mechanism.

As shown in FIG. 1, the shape of the putty 2 in the state of being added is not a smooth curved surface. However, there is a problem that wind noise is generated, and there is a risk of peeling off due to centrifugal force due to high-speed rotation because the rotor is not sufficiently adhered to the rotating body 1.

The plasticizer 3 as shown in FIG. 1 presses the putty 2 in a state where the plasticity is maintained, adheres the putty 2 to the rotating body 1 and shapes the shape into a shape having less air resistance. . In FIG. 1, the shaper 3
Is pressed against the putty 2 of the rotating body 1 by the shaper pressing mechanism 4, and the sponge 33 at the tip of the shaper 3 is pressed.
Presses the putty 2 while being elastically deformed.

At this time, the sponge 33 is elastically deformed, but the shaping portion 31 is not deformed. Therefore, the plastic putty 2 is deformed and shaped into the shape of the concave portion 32 of the shaping portion 31. Then, due to the elastic deformation of the sponge 33, the portion around the shaping portion 31 sufficiently presses the portion around the putty 2. Therefore, even if the amount of the putty 2 is different in size, it can be prevented from being left after shaping.

As shown in FIG. 2, the recess 32 may be filled with a sponge 33 '. In this case, even a relatively small amount of putty can be sufficiently pressed and shaped. Also, as shown in FIG.
It is preferable that the putty 2 and the sponge 33 are easily separated from each other after shaping by injecting a mist-like oil or the like.

As shown in FIG. 4, a shaping portion 35 having a large recess and a shaping portion 3 having a small recess are provided at the tip of the shaper 3.
6 and the appropriate one may be selected according to the amount of putty to be shaped. The selection control at this time is preferably based on a signal from the unbalance measuring device.

It is necessary that the shape of the concave portion 32 is such that the putty 2 is shaped into a shape with less wind noise.
Even in the case of a circular cross section, it is preferable that the cross section has a gentle shape such as an elliptical arc shape and a curve that conforms to hydrodynamics. Further, a soft resin material may be used instead of the sponge 33.

As described above, according to the unbalance correcting device provided with the shaper 3, the hard member 31 is attached to the tip of the shaper 3.
And a concave portion 32 having an arc-shaped cross section
When shaping is performed by taking measures to cover the inner surface of the concave portion 32 with the soft elastic member 33, the soft elastic member 33 on the inner surface of the concave portion 32 is elastically deformed and the putty 2 is formed.
Is pressed evenly to the periphery of the putty 2, regardless of the amount of the putty 2, regardless of the amount of the putty 2, it is shaped into a shape corresponding to the shape of the hard member 31 without leaving the periphery of the putty 2. is there.

Therefore, the generation of wind noise is small, and
It does not peel even with centrifugal force caused by high-speed rotation.
The most favorable imbalance correction can be made.

FIGS. 5 and 6 show an example of a putty supply device in the imbalance correcting device provided with the shaper of the above embodiment. As shown in FIG. 5, the putty supply device may also serve as a putty cutting means, a conveying means, a shaper pressing mechanism, and a shaping means. The details are described in Jpn.
No. 42 publication.

Alternatively, as shown in FIG. 6, a configuration may be adopted in which a cylinder serving as a shaping device pressing mechanism moves to serve both for cutting and transporting putty. For details, refer to Japanese Patent Application No. 2-34086.
No. 7 is as disclosed by the inventor.

In FIG. 5, reference numeral 52 denotes a dispenser containing a balance weight 51. The dispenser 52 is provided on a moving device 53 which can move the dispenser 52 right and left and rotate it around its long axis. The servo motor 54 controlled by the control circuit raises and lowers the ball screw 56 on which the piston 55 is mounted, and adjusts the balance weight 51 in the dispenser 52 by a predetermined amount corresponding to the left and right unbalance obtained by the unbalance measuring device. Discharge.

In the shaper 57, a rod made of an inelastic body and a concave portion for shaping the balance weight attached to the tip of the rod are formed in an arc-shaped cross section as shown in FIGS. It is composed of a shaping portion 58 made of an elastic body and a cylinder 59 as a shaping device pressing mechanism for moving the rod back and forth. The balance weight piece is cut out, carried, adhered to a correction portion, and further shaped.

In the actual unbalance correction operation, the unbalance measurement device measures the unbalance of the rotating body 50 to obtain the right and left correction points and the left and right surface correction amounts with respect to the right and left unbalance points to be corrected, and then supplies the unbalanced data. And then work out the imbalance. As the reciprocating means, a combination of a rack and a pinion may be used instead of the cylinder, and the shaping section 58 may be reciprocated from the discharge port to the correction point.

The reciprocating motion of the shaping portion 58 need not be a linear motion, but may be moved in an arc with the rear end of the rod having the shaping portion formed at the tip as an axis. is there.

In FIG. 6, reference numeral 61 denotes a supply device for supplying putty, which is composed of a tank 611, a pressure device 612, a pressure control valve 613, a pressure release valve 614, and a nozzle 615. Reference numeral 62 denotes a discharge mechanism for discharging putty measured to a desired amount.
22, an air cylinder 623 as a shaper pressing mechanism for extruding and pressing the piston 621, and a stroke meter 624 for measuring the retreat amount of the piston. 1, 2, and 3 at the tip of the piston 621.
A shaper 68 having a shape as shown in FIG.

Reference numeral 63 denotes a moving device that slides or rotates the discharge mechanism 62. Reference numeral 64 denotes a pressurizing device 612, a pressurizing control valve 613, and a pressure release based on signals from the stroke meter 624 and the setting device 641. Valve 614,
The control device controls the air cylinder 623 and the moving device 63.

[0028]

According to the present invention, as described above, a hard member is provided at the tip of the shaper, a concave portion having an arc-shaped cross section is provided at the tip of the hard member, and the inner surface of the concave portion is covered with the soft elastic member. By taking measures, when shaping, the soft elastic member on the inner surface of the concave portion is elastically deformed and pressed uniformly to the periphery of the putty, so that regardless of the amount of putty, It is shaped into a shape corresponding to the shape of the hard member without leaving the surrounding part.

Therefore, the generation of wind noise is small, and
It does not peel even with centrifugal force caused by high-speed rotation.
The most favorable imbalance correction can be made.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an embodiment of a shaper of an imbalance correcting device according to the present invention.

FIG. 2 is a side sectional view of an embodiment of the shaper of the imbalance correcting device according to the present invention.

FIG. 3 is a side sectional view of an embodiment of a shaper of the imbalance correcting device according to the present invention.

FIG. 4 is a side sectional view of an embodiment of a shaper of the imbalance correcting device according to the present invention.

FIG. 5 is a side sectional view of an embodiment of the imbalance correcting device according to the present invention.

FIG. 6 is a side sectional view of an embodiment of the imbalance correcting device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating body 2 Putty 3 Shaper 31 Shaping part (hard member) 32 Depression 33 Sponge (soft elastic member) 34 Injection hole 35 Shaping part of large recessed part 36 Shaping part of small recessed part 4 Shaper pressing mechanism

Claims (3)

(57) [Claims] 1. An apparatus for correcting unbalance, wherein a putty having a mass corresponding to the amount of unbalance of a rotating body is added to the rotating body, and the putty is pressed by a shaper. A hard member is provided at a tip of the hard member, a recess having an arc-shaped cross section is provided at a tip of the hard member, and an inner surface of the recess is covered with a soft elastic member. 2. The imbalance correcting apparatus according to claim 1, wherein said concave portion is filled with a soft elastic member. 3. The imbalance correcting apparatus according to claim 1, further comprising a shaper having said recesses of at least two sizes.