JPH0663221A - Game ball shooting device - Google Patents

Abstract

(57) [Summary] [Purpose] High accuracy, regardless of the power supply frequency by region.
Realize a motor for game ball launcher that can be stopped and rotated smoothly with low vibration. A rectifier circuit for converting AC to DC for supplying electric power to the stepping motor 5 and an oscillating circuit for generating pulses for step rotation are provided. ,
An oscillator control circuit for arbitrarily stopping and rotating and a drive circuit for supplying a current to each phase of the stepping motor according to a pulse are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device driving motor, and more particularly to a game ball launching device.

[0002]

2. Description of the Related Art Conventionally, a combination of an induction motor and a speed reducer and a stepper motor rotated by step drive have been used for driving a game ball launching device. FIG. 2 is a block diagram of a conventional induction motor, where 6 is a speed reducer and 7 is an induction motor.

[0003]

However, in such a conventional combination, the power supply frequencies are 50 Hz and 60 H.
In the area of z, since the rotation speed of the motor is different, separate speed reducers are required to protect the number of game ball firings, which is restricted by law, which is a factor of cost increase in terms of productivity and manageability. . In addition, since the rotation speed of the induction motor fluctuates due to the load in principle, there is a problem that the rotation speed fluctuates due to manufacturing fluctuations of the launcher. Further, when the stepping motor is directly driven, it is necessary to design the motor structure exclusively in order to prevent the rotation speed and the resonance frequency of the motor from overlapping as a measure against vibration, which is a factor of cost increase. In addition, when the rotation and stop control of the stepping motor is performed by the power source, there is a problem that a mistaken step is likely to occur at the moment the power is turned on again because the information on the excitation position of the motor is lost when the power is stopped. The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a motor capable of firing a game ball with high precision and low vibration regardless of the region.

[0004]

In order to achieve the above-mentioned object, the present invention provides a rectifier circuit for converting an alternating current to a direct current for supplying electric power to a stepping motor, in which the motor is a combination of a stepping motor and a speed reducer. And an oscillator circuit for generating a pulse for step rotation, an oscillator control circuit for arbitrarily stopping and rotating, and a drive circuit for supplying a current to each phase of the stepping motor according to the pulse. It is a thing.

[0005]

With the above-described structure, the present invention can rotate with high accuracy irrespective of the power supply frequency, and the rotation speed of the motor can be arbitrarily selected, so that low vibration can be achieved. Furthermore, since the rotation and stop of the motor are controlled by the pulse, it is possible to smoothly rotate and stop.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. As shown in FIG. 1, an oscillation circuit (pulse oscillator) 1 using crystal is electrically connected to a stepping motor 5 via an oscillator control circuit 2 and a driving circuit 3, and a rectifying circuit 4 is connected to the driving circuit. Connected via 3. Further, mechanically, the stepping motor 5 and the speed reducer 6 are connected.

To explain the operation of the above configuration, the pulse oscillator 1 is set to be optimum for the torque and vibration of the motor, and it oscillates with high precision by the crystal. The oscillator control circuit 2 selects whether to send a pulse to the drive circuit 3 based on the rotation and stop signals of the motor. The drive circuit 3 rotates the stepping motor 5 in synchronization with the sent pulse frequency. The speed reducer 6 converts the rotation speed of the stepping motor 5 so that it becomes equal to or lower than the legal speed, and transmits it to the game ball launching device.

As described above, according to the motor drive structure of the embodiment of the present invention, the motor rotation speed can be arbitrarily set regardless of the final speed, so that it can be used with low vibration and high efficiency. Moreover, since the pulse is controlled by the oscillator control circuit, the excitation information of the stepping motor is not erased, and stable smooth rotation and stop can be performed. Further, by performing the step rotation, the power supply frequency and the rotation speed of the motor become irrelevant, and there is no need to change the area.

[0009]

As is apparent from the above embodiments, according to the present invention, a motor is a combination of a stepping motor and a speed reducer, and rectification for converting AC to DC for supplying electric power to the stepping motor. A circuit, an oscillating circuit for generating a pulse for step rotation, an oscillator control circuit for arbitrarily stopping and rotating, and a drive circuit for supplying a current to each phase of the stepping motor according to the pulse, Therefore, it stops with high precision and low vibration.
This has the effect that a drive motor that does not depend on the smooth power frequency of rotation can be realized by using a general stepping motor.

[Brief description of drawings]

FIG. 1 is a block diagram showing a motor configuration according to an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional induction motor.

[Explanation of symbols]

1 ... Oscillation circuit, 2 ... Oscillator control circuit, 3 ... Drive circuit, 4 ... Rectifier circuit, 5 ... Stepping motor, 6
... reducer, 7 ... induction motor.

Claims (1)

[Claims] 1. A ball launching device that launches a game ball by urging a hammer in a launching direction by a cam that rotates together with a motor and urging the hammer in a launching direction when the connection with the cam is released. A stepping motor and a speed reducer are combined for the motor, and a rectifier circuit that exchanges AC to DC to supply electric power to the stepping motor, an oscillation circuit that generates a pulse for step rotation, and an arbitrary stop rotation And a drive circuit that supplies a current to each phase of the stepping motor in response to a pulse.