JP2581526Y2 - Swing barrel drive - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oscillating barrel driving device for performing polishing, plating, washing, etc., by oscillating a barrel and mixing and stirring materials contained therein.

[0002]

2. Description of the Related Art In a barrel polishing apparatus, for example, a rotary barrel and a vibration barrel are generally used. However, the present applicant has previously disclosed a barrel polishing apparatus which is simple in construction and operation and can be efficiently polished. There has been proposed an oscillating barrel in which a barrel formed of a container is oscillated, and a material contained therein is flown so as to draw an eight-shape and is polished.

In the swing barrel, a drive device that swings the barrel is exemplified at first by a drive motor and a crank mechanism. In this case, however, the speed distribution at the time of swing becomes a sine curve, and In some cases could not be made to flow in a figure-eight shape.

[0004] On the other hand, it has been found that when the barrel is reciprocated in the swinging section at a substantially constant speed, the material inside can be surely made to flow in a figure-eight shape. As a drive device for swinging, a drive device employing a mechanism using a heart cam or a cylindrical cam for converting a rotational motion into a constant speed motion has been previously proposed.

[0005]

However, a drive device using the above-described constant velocity motion mechanism has a complicated structure,
Further, if the swing range and the swing speed can be arbitrarily changed according to the demands during the actual polishing operation, the structure becomes more complicated, so that the cost is increased and there is a problem in durability.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention makes it possible to swing a barrel at a substantially constant speed and to set the swing range arbitrarily, and has a simple, inexpensive and durable swing barrel. It is an object to provide a driving device.

[0007]

SUMMARY OF THE INVENTION An oscillating barrel driving device according to the present invention is an oscillating barrel driving device for oscillating a barrel supported on a rotatable oscillating shaft so as to oscillate about its axis. A driving means comprising a drive motor comprising a high resistance squirrel-cage motor capable of forward and reverse rotation and a reduction gear; a rotation transmitting means for connecting the driving means and the oscillating shaft; and a reciprocating rotation range of the oscillating shaft. Setting means for setting the position to be adjustable; detecting means for detecting both end positions of the swing range of the swing axis set by the setting means; and a swing shaft within a reciprocating rotation range detected by a detection signal of the detecting means. And control means for controlling the drive of the drive motor so as to reciprocate at substantially the same speed.

[0008]

According to the present invention, a large starting and accelerating torque can be obtained by using a high-resistance squirrel-cage motor as a drive motor, and the drive motor can be driven substantially within the reciprocating rotation range set by the control means. To control the drive to reciprocate at high speed, simply connect the drive motor to the oscillating shaft via a speed reducer and rotation transmission means to drive the oscillating shaft forward and reverse to oscillate the barrel at approximately the same speed. It can be driven and its swing range can be easily set and changed by adjusting the position of the setting means. Thus, the barrel can be arbitrarily controlled at a substantially constant speed with a simple, durable and inexpensive configuration. Can be driven in the swing range of.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An oscillating barrel polishing apparatus according to one embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a barrel comprising a container having an open top, as shown in FIG. 3, a polygonal end plate 2 at both ends in the axial center direction, and a width corresponding to each side of the end plate 2. A plurality of side plates 3 each having both ends joined to the end plate 2
And a reinforcing and sealing plate 4 for sealing the joint between the side plates 3 and 3 by bolts.
Needless to say, the upper surface opening of the barrel 1 may be closed by a lid if necessary. A vibration motor 5 is attached to the bottom of the barrel 1 via a mounting bracket 6 with a suitable reinforcing member, so that the entire barrel 1 is vibrated.

A support bracket 7 is attached to an upper portion of the end plate 2 of the barrel 1 and is supported on a swing support frame 9 via a vibration-proof elastic body 8. The swing support frame 9 is provided with swing shafts 1 on both sides thereof.
0 is rotatably supported by the frame 11 via bearings 12a, 12b, and 12c.

One end of one swing shaft 10 and an output shaft of a speed reducer 15 are connected by a rotation transmitting means 13. The rotation transmitting means 13 includes a toothed pulley 14 attached to the swing shaft 10.
a and the toothed pulley 1 attached to the output shaft of the speed reducer 15
4b and a toothed belt 14c. Further, the speed reducer 15 is connected via a rotation transmitting means 17 to a drive motor 16 composed of a high-resistance cage motor having high starting and high acceleration torque characteristics. The rotation transmitting means 17 includes toothed pulleys 18a and 18b and a toothed belt 18c. The drive motor 16 has a DC power generation braking function capable of obtaining a large braking force, and can frequently start, reverse, and stop to swing the barrel 1.

Reference numeral 20 denotes a detecting means comprising a proximity switch for detecting the swing angle of the barrel 1 and the like, and is attached to the tip of a swing lever 19 fixed to the swing shaft 10. Reference numeral 21 denotes an arc plate attached to the frame 11, the outer periphery of which is formed so as to follow the swing locus of the detecting means 20. The dog 22 is fixedly mounted at an arbitrary position.

The swing end setting dog 22 by the detecting means 20
The control signal 2 for controlling the drive of the drive motor 16
3 has been entered. The control means 23 has a built-in inverter drive circuit and the signal from the encoder is fed back. The control means 23 rotates the drive motor 16 at a predetermined constant speed, and rotates the drive motor 16 in one direction to detect from the detection means 20. When one swing end is detected by a signal, braking is applied and the brake is stopped immediately. After that, when the other swing end is detected by a detection signal from the detection means 20 and the other swing end is detected by the detection signal from the detection means 20, braking is immediately stopped. By repeating the operation of rotating the drive motor 16 in one direction again, the drive motor 16 is configured to rotate forward and backward at a substantially constant speed. The control means 23 has a built-in timer,
The drive motor 16 is prevented from burning in by preventing the drive current from flowing in the reverse direction for a certain period of time after detecting the swing end.

The barrel 1 accommodates a polishing medium 24 and an object 25 to be polished.

Next, the barrel polishing operation with the above configuration will be described. The medium 24 and the object to be polished 25 are accommodated in the barrel 1, and the entire barrel 1 is vibrated by the vibration motor 5, and the drive motor 16 is driven in the reverse direction by taking advantage of its high starting and high acceleration torque characteristics. When the medium 1 is oscillated at a substantially constant speed, the medium 24 and the object to be polished 25 stir and flow in the shape of a figure 8 while vibrating in the barrel 1, and the medium 24 flows greatly while vibrating and polished. Since the surface of the object 25 is efficiently and uniformly contacted, the surface of the object 25 is efficiently polished by the polishing action of the medium 24. Further, even if the object 25 has a concave shape due to the above-described behavior of the medium 24, the inside of the concave portion can be uniformly polished.

The swing range of the barrel 1 can be easily set and changed by adjusting the position of the swing end setting dog 22 along the outer periphery of the arc plate 21.
The swing range can be easily changed to an optimum swing range according to the mass, shape, and quantity of the five. Further, the swing speed of the barrel 1 can be easily changed by adjusting the control means 23.

As described above, according to the oscillating barrel drive device of the present embodiment, the barrel 1 can be arbitrarily oscillated at a substantially constant speed with a simple, durable and inexpensive structure without a complicated constant speed mechanism. Swing drive can be performed in the movement range.

In the above embodiment, an example is shown in which the driving device of the present invention is applied to an oscillating barrel polishing device. However, it is needless to say that the present invention can also be applied to an oscillating barrel driving device of a plating device or a cleaning device.

[0020]

[Effect of the Invention] According to the swinging barrel drive device of the present invention,
A large starting and acceleration torque is obtained by using a high-resistance cage motor as the drive motor, and drive control is performed so that the drive motor reciprocates at a substantially constant speed within the set reciprocal rotation range by the control means. Therefore, the barrel can be driven to oscillate at substantially constant speed simply by connecting the drive motor to the oscillating shaft via the speed reducer and the rotation transmitting means, and the setting range of the oscillating range is adjusted by the setting means. Can be set and changed more easily, thus exerting a great effect that the barrel can be swingably driven at a substantially constant speed in an arbitrary swing range with a simple, durable and inexpensive configuration. .

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view showing a schematic configuration of an oscillating barrel polishing apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a side view of the container of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Barrel 10 Oscillating shaft 13 Rotation transmitting means 15 Reduction gear 16 Drive motor 22 Detecting means 22 Oscillating end setting dog 23 Control means

Claims (1)

(57) [Scope of request for utility model registration] An oscillating barrel driving device for oscillatingly driving a barrel supported by a rotatable oscillating shaft so as to be oscillatable about its axis, comprising a high-resistance squirrel-cage motor capable of forward and reverse rotation. Drive means comprising a drive motor and a speed reducer, a rotation transmitting means for connecting the drive means and the oscillating shaft, setting means for setting the reciprocating rotation range of the oscillating shaft to be position adjustable, and setting by the setting means. Detecting means for detecting the positions of both ends of the reciprocating rotation range of the oscillating shaft, and driving the drive motor to reciprocate the oscillating shaft at substantially constant speed within the reciprocating rotation range detected by the detection signal of the detecting means. A swing barrel driving device comprising: a control unit for controlling the swing barrel driving device.